• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    There is disclosed a heat pipe type heat pipe inspecting apparatus comprising an oil tank (1), a temperature detector (2), an insulating sleeve (11), a first conductive rod, a voltage generator (4), a step-down transformer, and a second conductive rod. The oil tank (1) is provided with a first communication hole and a second communication hole. A heat pipe type insulating sleeve to be tested is connected to and penetrates the first communication hole. An insulating sleeve is connected to the second connection hole and penetrates this. A first end of the heat pipe type insulating sleeve (6) and a first end of the insulating sleeve are connected inside the oil tank (1) through the first conductive rod. A second end of the insulating sleeve of the heat pipe type (6) and a second end of the insulating sleeve are connected outside the oil tank by the second conductive rod. The insulating sleeve of the heat pipe type (6), the insulating sleeve (11), the first conductive rod and the second conductive rod form a closed circuit. The step-down transformer is externally attached to the insulating sleeve of the heat pipe type by means of a sleeve. The voltage generator is connected to the insulating sleeve of the heat pipe type (11). The temperature detecting means (7) is disposed inside the insulating sleeve of the heat pipe type (11).
    公开号:CH713458B1
    申请号:CH00946/18
    申请日:2017-06-27
    公开日:2019-06-14
    发明作者:Yin Pengbo；Hu Wei；Xu Zuoming；Xie Liang；Xie Xiongjie；Luo Xiaoqing
    申请人:China Electric Power Res Institute Company Limited；State Grid Corp China；
    IPC主号:
    专利说明:

    description
    Cross Reference to Related Applications This application is based on and claims priority from Chinese Patent Application No. 201 610 815 261.8 filed on September 9, 2016, the entire contents of which are hereby incorporated by reference.
    Technical field The disclosure relates to the technical field of electrical power and in particular to a test device for testing an insulating bushing of the heat pipe type.
    Background of the Invention As the transmission capacity of projects for the transmission of ultra high voltage direct current increases, a nominal current of direct current devices increases sharply. For example, the rated current of an ultra-high voltage DC direct current bushing has exceeded 5000 A and is affected by harmonic waves such that the insulating bushing generates considerable heat, causing a conductive rod to deform and expand in the insulating bushing, and both the performance of the conductive rod the cavity seal as well as the insulation strength of the insulating bushing is endangered. The heat development of the insulating bushing leads to more errors and thus causes a large economic loss.
    In order to solve the heat generation problem of an ultra high voltage DC direct current bushing, a heat pipe technique is currently used in the insulating bushing to form an insulating bushing of the heat pipe type, and an inner temperature distribution of the insulating bushing is improved by using a heat pipe principle, thereby causing interference can be reduced by generating heat in the insulating bushing. However, the technique of heat pipe type insulating bushing is not mature, and if one parameter varies, the performance of the heat pipe type insulating bushing will vary accordingly, thereby reducing an improvement effect on the heat generation situation of the insulating bushing. However, no effective solution for testing the performance of the heat pipe type insulating bushing has been proposed in the prior art.
    SUMMARY The present invention is expected to provide a test device for testing a heat pipe type insulating bushing intended to solve the problem in the prior art that the performance of a heat pipe type insulating bushing cannot be tested. to solve.
    The present invention provides a test apparatus for testing an insulating bushing of the heat pipe type, comprising: an oil tank, a temperature detector, an insulating bushing, a first conductive rod located inside the oil tank, a voltage generator located outside the oil tank, a step-down transformer and a second conductive rod, the oil tank being provided with a first communication hole and a second communication hole; an insulating bushing of the heat pipe type to be tested is connected to and penetrates the first connection hole; the insulating bushing is connected to and penetrates the second communication hole on a top wall of the oil tank, a first end of the insulating pipe of the heat pipe type and a first end of the insulating bushing inside the oil tank are connected by the first conductive rod; a second end of the heat pipe type insulating bushing and a second end of the insulating bushing outside the oil tank are connected by the second conductive rod; the heat pipe type insulating bushing, the insulating bushing, the first conductive rod and the second conductive rod form a closed circuit; the step-down transformer is externally attached to the heat pipe type insulating bushing by means of a sleeve and is arranged to adjust a closed circuit current; the voltage generator is connected to the insulating duct of the heat pipe type and is set up to set a voltage of the closed circuit; and the temperature detection device is arranged inside the insulating bushing of the heat pipe type and is configured to detect a temperature of the insulating bushing of the heat pipe type.
    In one embodiment, the insulating bushing of the heat pipe type and the top wall of the oil tank can be arranged at an angle to one another in the test device for testing an insulating bushing of the heat pipe type.
    In one embodiment, the test device for testing an insulating bushing of the heat pipe type may further comprise: a connecting sleeve arranged outside the oil tank, wherein a first end of the connecting sleeve can be detachably connected to the first connecting hole; and in addition, an axis of the connecting sleeve and a plane in which the top wall of the oil tank lies can form a predetermined angle, and the insulating bushing of the heat pipe type can be detachably connected to and penetrating the connecting sleeve.
    In one embodiment, the test device for testing an insulating duct of the heat pipe type may further comprise: a liquid reservoir, wherein a working medium inlet hole may be provided on an upper wall of a conductive rod of the insulating duct of the heat pipe type, the working medium inlet hole in communication with the liquid reservoir can stand, and the liquid reservoir can be configured to introduce a heat-conducting working medium into the conductive rod after the working medium has been filled into the conductive rod.
    In one embodiment, the test device for testing an insulating bushing of the heat pipe type may further comprise: a property detection device, wherein the property detection device can be connected to the liquid reservoir and is configured to detect a property of the heat-conducting working medium in the liquid reservoir; and the liquid reservoir is further configured to determine a property of the heat-conducting working medium input into the conductive rod in accordance with a detection result of the property detection device.
    In one embodiment, the test device for testing an insulating bushing of the heat pipe type may further comprise: a vacuum pump device, wherein the vacuum pump device can communicate with the working medium inlet hole and is configured to set a degree of vacuum in the conductive rod.
    In one embodiment, the test device for testing an insulating bushing of the heat pipe type can further comprise a liquid level detection device and / or a pressure detection device, wherein the liquid level detection device can be arranged on an inner wall of the conductive rod of the insulating bushing of the heat pipe type and can be configured to one Detect liquid level of the heat-conducting working medium in the conductive rod and wherein the pressure detection device can be arranged on an inner wall of the conductive rod of the insulating bushing of the heat pipe type and can be configured to detect a pressure in the conductive rod.
    In one embodiment, in the test device for testing an insulating bushing of the heat pipe type, the insulating bushing can be replaced by an insulating bushing of the heat pipe type to be tested.
    [0014] In one embodiment, the test device for testing an insulating bushing of the heat pipe type may further comprise: a heating device arranged in the oil tank and a heat sink arranged on an outer wall of the oil tank.
    In one embodiment, the test device for testing an insulating bushing of the heat pipe type may further include: an expansion vessel connected to the oil tank and configured to adjust an amount of oil in the oil tank.
    According to the test device for testing an insulating bushing of the heat pipe type in embodiments of the disclosure, the generated amount of heat of a conductive rod in an insulating bushing of the heat pipe type is adjusted by adjusting the current of a closed circuit via a step-down transformer and the generated amount of heat of an inner insulating layer of the The insulating duct of the heat pipe type is adjusted by adjusting the voltage of the closed circuit via a voltage generator, so that the test device can better simulate an actual operating state of the insulating duct of the heat pipe type. A temperature detection device detects the temperature of the insulating duct of the heat pipe type in order to achieve a performance test of the insulating duct of the heat pipe type.
    In addition, the test apparatus can comprehensively examine the feasibility of insulating the heat pipe type under various test parameters and also test the safety and reliability of the insulating bushing of the heat pipe type under conditions of operation at full voltage and full current, thereby eliminating the problem in the prior art that the performance of an insulating bushing of the heat pipe type cannot be checked.
    Brief Description of the Drawings By reading the following detailed description of the preferred types of implementation, various other advantages and benefits will become apparent to those skilled in the art. The drawings are only intended to illustrate the preferred types of implementation and are not intended to limit the disclosure. In addition, the same part is represented by the same reference numerals throughout the drawings. The drawings show:
    Fig. 1 is a schematic representation of a test device for testing an insulating bushing of the heat pipe type according to an embodiment of the disclosure.
    2 is a sectional view of the structure of a test device for testing an insulating bushing of the heat pipe type according to an embodiment of the disclosure.
    3 shows a schematic illustration of an insulating bushing of the heat pipe type in a test device for testing an insulating bushing of the heat pipe type according to an embodiment of the disclosure.
    FIG. 4 is an enlarged partial view of part A in FIG. 2.
    5 shows a schematic illustration of a plurality of connecting sleeves in a test device for testing an insulating bushing of the heat pipe type according to an embodiment of the disclosure.
    Detailed Description The exemplary embodiment of the disclosure is described in more detail below with reference to the drawings. Although exemplary embodiments of the disclosure are shown in the drawings, it is to be understood that the disclosure may be implemented in various forms without being limited by the embodiments discussed herein. Rather, these embodiments are provided for a better understanding of the invention and to fully convey the scope of the disclosure to those skilled in the art. It is important to note that the embodiments of the disclosure and the features in the embodiments can be mutually combined on the condition that there are no conflicts. The disclosure is described in more detail below with reference to the drawings and in connection with the embodiments.
    Referring to FIGS. 1 and 2, a structure of a test device for testing an insulating bushing of the heat pipe type according to an embodiment of the disclosure is shown in the figures. The test device for testing an insulating bushing of the heat pipe type is set up to test a temperature situation of an insulating bushing of the heat pipe type under different test parameters, and thus determines the performance of the insulating bushing of the heat pipe type under different test parameters. As shown in the figures, the test device for testing an insulating bushing of the heat pipe type includes: an oil tank 1, a temperature detection device 7, an insulating bushing 11, a first conductive rod 2, a voltage generator 4, a step-down transformer 5 and a second conductive rod 3. The first conductive rod 2 is arranged inside the oil tank 1 and the voltage generator 4, the step-down transformer 5 and the second conductive rod 3 are all arranged outside the oil tank 1. The oil tank 1 is provided with a first connection hole and a second connection hole, an insulating duct 6 of the heat pipe type to be tested is connected to and penetrates the first connection hole, and the insulating duct 6 of the heat pipe type is partially arranged inside the oil tank 1. The insulating bushing 11 is connected to and penetrates the second connection hole, and the insulating bushing 11 is partially arranged in the interior of the oil tank 1. A first end of the heat pipe type insulating bushing 6 (about a lower end of the heat pipe type insulating bushing 6 as shown in FIG. 1) and a first end of the insulating bushing 11 (about a lower end of the insulating bushing 11 as shown in FIG. 1). 1) are connected inside the oil tank 1 by the first conductive rod 2 and a second end of the heat pipe type insulating bushing 6 (about an upper end of the heat pipe type insulating bushing 6 as shown in Fig. 1) and a second end of the Insulating bushing 11 (approximately an upper end of the insulating bushing 11, as shown in FIG. 1) are connected outside of the oil tank 1 by the second conductive rod 3. The insulating duct 6 of the heat pipe type, the insulating duct 11, the first conductive rod 2 and the second conductive rod 3 form a closed circuit.
    Specifically, both the first connection hole and the second connection hole are provided on the top wall of the oil tank 1. The top wall of the oil tank 1 is provided with two connection pipes in a one-to-one correspondence to the first connection hole and the second connection hole. The insulating bushing 6 of the heat pipe type penetrates one of the two connecting pipes and is connected to this connecting pipe. The insulating bushing 11 penetrates the other of the two connecting pipes and is connected to the other connecting pipe. As a type of implementation, the insulating bushing 6 of the heat pipe type is detachably connected to the connecting pipe and the insulating bushing 11 is detachably connected to the connecting pipe. The insulating bushing 11 not only creates an electrical connection to a closed circuit, but also achieves an electrical insulation effect and thus prevents the discharge of a high voltage to a low potential.
    The step-down transformer 5 is attached to the outside of the insulating bushing 6 of the heat pipe type by means of a sleeve and is set up to adjust the current of the closed circuit. The voltage generator 4 is electrically connected to the insulating bushing 6 of the heat pipe type and is set up to set the voltage of the closed circuit. The temperature detection device 7 is arranged in the interior of the insulating bushing 6 of the heat pipe type and is set up to detect the temperature of the insulating bushing 6 of the heat pipe type. More specifically, the step-down transformer 5 is attached to the outside of the connection pipe which is connected to the insulating bushing 6 of the heat pipe type. As one type of implementation, the step-down transformer 5 can be a penetration current step-up transformer and the voltage generator 4 is a high voltage generator.
    Those skilled in the art should understand that, with reference to FIGS. 3 and 4, a heat-conducting working medium is introduced into a conductive rod 64 of the heat pipe-type insulating bushing 6 and at an upper end of the heat pipe-type insulating bushing 6 (as a cooler 67 is arranged, for example, an upper end of the insulating duct 6 of the heat pipe type as shown in FIG. 2). Both a first end 61 and a second end 62 of the heat pipe type insulating bushing 6 are provided with wiring terminals. An inner insulating layer 65 formed by a capacitor core is arranged inside the insulating duct 6 of the heat pipe type. Therefore, the insulating bushing 6 of the heat pipe type is improved by an insulating bushing, the insulating bushing being an insulating oil-SF6 high-voltage bushing or an insulating high-voltage bushing with oil-impregnated paper or an insulating high-voltage bushing with rubber-impregnated paper or an insulating bushing in can be of a different shape and the insulating bushing is not restricted in this embodiment. A work flow of the heat pipe type insulating bushing 6 is as follows. After the thermally conductive working medium in the conductive rod 64 has taken up the temperature of the conductive rod 64, the thermally conductive working medium is converted from a liquid to a gaseous state, the gaseous thermally conductive working medium moves upward (relative to FIG. 2), the cooler 67 cools the gaseous heat-conducting working medium to convert the heat-conducting working medium from the gaseous state to the liquid state, the liquid heat-conducting working medium flows down under gravity along an inner wall of the conductive rod 64 (relative to FIG. 2), which takes the liquid heat-conducting working medium continuously the temperature of the guide rod 64 and the above-mentioned workflow is repeated.
    In this embodiment, one end of the first conductive rod 2 is connected to the wiring terminal of the first end 61 of the insulating duct 6 of the heat pipe type, and the other end of the first conductive rod 2 is connected to a wiring terminal of the first end of the insulating duct 11. One end of the second conductive rod 3 is connected to the wiring terminal 66 of the second end 62 of the insulating duct 6 of the heat pipe type, and the other end of the second conductive rod 3 is connected to a wiring terminal of the second end of the insulating duct 11. In addition, the voltage generator 4 may be connected to the wiring terminal 66 of the second end 62 of the insulating duct 6 of the heat pipe type, or may be connected to the wiring terminal of the second end of the insulating duct 11. There are two temperature detection devices 7. A temperature detection device 7 is arranged on an outer wall of the conductive rod 64 of the insulating bushing 6 of the heat pipe type and is configured to detect the temperature of the conductive rod 64 of the insulating bushing 6 of the heat pipe type. The other temperature detection device 7 is arranged on an outer wall of the inner insulating layer 65 and is set up to detect the temperature of the inner insulating layer 65. The two temperature detection devices detect the situation of the overall temperature distribution of the insulating bushing 6 of the heat pipe type better.
    In a specific implementation, the test device can test a temperature distribution situation of the insulating bushing 6 of the heat pipe type under different test parameters, wherein different test parameters can include at least one of the following parameters: an angle of inclination of the conductive rod 64 of the insulating bushing 6 of the heat pipe type, the type of heat-conducting working medium in the conductive rod 64 of the insulating pipe 6 of the heat pipe type, the amount of the heat-conducting working medium, the degree of vacuum in the conductive rod 64 of the insulating bushing 6 of the heat pipe type, or the like. The temperature detection device 7 detects the temperatures of the insulating bushing 6 of the heat pipe type under different test parameters and thus determines the performance of the insulating bushing 6 of the heat pipe type under different test parameters according to the situation of the temperature change.
    In this embodiment, the generated amount of heat of the conductive rod 64 in the insulating duct 6 of the heat pipe type is adjusted by adjusting the closed circuit current through the step-down transformer 5, and the generated amount of heat of the inner insulating layer of the insulating duct 6 of the heat pipe type is adjusted by adjusting the Closed circuit voltage is set via the voltage generator 4 so that the test apparatus will be able to better simulate an actual operating state of the heat pipe type insulating bushing 6, and the temperature detection device 7 detects the temperature of the heat pipe type insulating bushing 6 to perform a performance test of the heat pipe type insulating bushing 6 to reach. Further, the test apparatus can comprehensively examine the feasibility of the heat pipe type insulating bushing 6 under various test parameters, and can also test the safety and reliability of the heat pipe type insulating bushing 6 under conditions of full voltage and full current operation, thereby alleviating the problem in the art that the performance of a heat pipe-shaped insulation sleeve cannot be checked, is solved and the safety and reliability of the insulating bushing 6 of the heat pipe type is improved in practical operation.
    1, 2 and 5, the insulating bushing 6 of the heat pipe type and the top wall of the oil tank 1 are arranged at an angle to one another in the embodiment mentioned above. The test of the temperature change of the insulating bushing 6 of the heat pipe type is carried out at different angles of inclination, and thus the performance test of the insulating bushing 6 of the heat pipe type is carried out at different angles of inclination.
    Referring to Figures 1, 2 and 5, the testing device may further include; a connecting sleeve 8, the connecting sleeve 8 being arranged outside the oil tank 1. A first end 81 of the connecting sleeve 8 (a lower end, as shown in Fig. 4) is detachably connected to the first connecting hole, the axis of the connecting sleeve 8 and the top wall of the oil tank 1 form a predetermined angle β, and the insulating bushing 6 Heat pipe type is detachably connected to the connecting sleeve 8 and penetrates it. More specifically, the first end 81 of the connection sleeve 8 is connected to the first connection hole via a flange, the axis of the connection sleeve 8 and the top wall of the oil tank 1 form a predetermined angle β, and the insulating duct 6 of the heat pipe type and the connection sleeve 8 are coaxial and detachable connected. The angle between the axis of the connecting sleeve 8 and the top wall of the oil tank 1 is equal to that between the insulating duct 6 of the heat pipe type and the top wall of the oil tank 1. In a certain implementation, the predetermined angle is determined according to practical circumstances and is not restricted in this embodiment ,
    In a certain implementation, several connecting sleeves 8 can be present and the axis of each connecting sleeve 8 and the top wall of the oil tank 1 form different predetermined angles. If it is necessary to perform the performance test of the insulating duct 6 of the heat pipe type at different angles of inclination, it is therefore only necessary to releasably connect different connecting sleeves 8 to the first connecting hole and then releasably connect the insulating duct 6 of the heat pipe type to the connecting sleeves 8. Since the axis of each connecting sleeve 8 and the top wall of the oil tank 1 form different predetermined angles, the insulating bushing 6 of the heat pipe type connected to different connecting sleeves 8 and the top wall of the oil tank 1 also form different predetermined angles, so that the insulating bushing 6 of the heat pipe type has different angles of inclination ,
    In a particular implementation, each connecting sleeve 8 is connected to the first connecting hole via a flange. In order to ensure a tight connection between the connecting sleeves 8 and the first connecting hole, the opening of the first connecting hole is set to a predetermined opening. At different angles between the connecting sleeves 8 and the oil tank 1, the size of the flange is set such that the outer walls of the connecting sleeves 8 are hermetically connected to the first connecting hole through the flange. The predetermined opening can be determined according to practical circumstances and is not restricted in this embodiment. With reference to FIG. 4, the figure shows a structural representation of angles β between the axis of the connecting sleeves and the top wall of the oil tank 1, such as 90 °, 60 °, 45 ° and 30 °. In the implementation, the opening of the first connection hole is equal to the opening of a lower end face of the connection sleeve 8 when β = 30 °. If the connecting sleeve 8 has to be mounted at β = 45 °, only the size of the flange has to be exchanged so that the connecting sleeve is hermetically connected to the first connecting hole by the flange.
    It can be seen that in this embodiment, the insulating bushing 6 of the heat pipe type and the top wall of the oil tank 1 in an application-specific manner at an angle to provide the connecting sleeve 8 and to form a predetermined angle between the axis of the connecting sleeve 8 and The top wall of the oil tank 1 are arranged so that the heat pipe type insulating bushing 6 can check a temperature change at different inclination angles, and the effects of a simple structure and a simple application can be obtained.
    3 and 4, the test apparatus in each of the above embodiments may further include: a liquid reservoir, with a working medium input hole 63 provided on an upper wall of a conductive rod 64 of the heat pipe type insulating bushing 6, the working medium input hole 63 communicates with the liquid reservoir, and the liquid reservoir is configured to introduce the heat-conducting working medium into the conductive rod 64.
    In this embodiment, the liquid reservoir introduces the heat-conducting working medium into the conductive rod 64 of the insulating bushing 6 of the heat pipe type, so that the type of the heat-conducting working medium supplied from the liquid reservoir can be changed, as a result of which an examination of the temperature influence by different types of heat conducting media in the conductive rod 64 of the insulating duct 6 of the heat pipe type and a performance test of the insulating duct 6 of the heat pipe type is carried out under various types of heat conducting media.
    In the above-mentioned embodiment, the test device can further comprise: a property detection device, wherein the property detection device is connected to the liquid reservoir and is configured to detect the property of the heat-conducting working medium in the liquid reservoir. The liquid reservoir is further configured to determine the property of the heat-conducting working medium input into the conductive rod 64 of the insulating duct 6 of the heat pipe type, based on a detection result detected by the property detection device.
    During the test, the property detection device detects the property of the heat-conducting working medium in the liquid reservoir. The liquid reservoir guides the heat-conducting working medium into the conductive rod 64 of the insulating duct 6 of the heat pipe type. The property detection device detects the property of the heat-conducting working medium in the liquid reservoir in real time. If the property detection device detects that the property of the heat-conducting working medium in the liquid reservoir reaches a certain property value, the liquid reservoir stops the supply of the heat-conducting working medium into the conductive rod 64. In this case, the difference between the property previously and the property currently detected by the property detection device of the heat-conducting working medium in the liquid reservoir, the property of the heat-conducting working medium in the conductive rod 64, namely the first property, and the test device tests the insulating duct 6 of the heat pipe type with the heat-conducting working medium of the first property. After the test is completed, the heat-conducting working medium in the conductive rod 64 is discharged, and the conductive rod 64 is dried and vacuum-pumped. The liquid reservoir then conducts the heat-conducting working medium into the conductive rod 64. If the property detection device detects that the property of the heat-conducting working medium in the liquid reservoir reaches a different property value, the liquid reservoir stops the supply of the heat-conducting working medium into the conducting rod 64. In this case, that is Property of the heat-conducting working medium in the conductive rod 64 has a second property, and the test device tests the insulating duct 6 of the heat pipe type with the heat-conducting working medium of the second property. The above steps are repeated, and the temperature influence on the insulating bushing 6 of the heat pipe type under the filling amount of the heat conductive working medium can be checked.
    It is important to note that the first property and the second property can be determined according to practical circumstances and are not limited in this embodiment.
    In this embodiment, the property detection device detects the property of the heat-conducting working medium in the liquid reservoir, and the liquid reservoir determines the property of the heat-conducting working medium introduced into the conductive rod 64 in accordance with a detection result, so that the temperature influence by the amount of the heat-conducting working medium in the conductive rod 64 the insulating bushing 6 of the heat pipe type is checked, and thereby a performance test of the insulating bushing 6 of the heat pipe type is carried out under different filling quantities of the heat-conducting working medium.
    Referring to FIGS. 3 and 4, in the above embodiment, the test apparatus may further include: a vacuum pump device, the vacuum pump device communicating with the working medium entry hole 63 and configured to measure the degree of vacuum in the conductive rod 64 to set the insulating duct 6 of the heat pipe type. More specifically, the vacuum pump can include: a vacuum pump and a vacuum meter. The vacuum pump device communicates with the working medium entry hole 63, the vacuum meter is located in the vacuum pump and configured to sense the degree of vacuum in the conductive rod 64, and the vacuum pump is configured to measure the degree of vacuum in the conductive rod 64 in accordance with that of the vacuum gauge set the vacuum level.
    In a particular implementation, the test apparatus may further include: a T-pipe (not shown in the figure), with a first end of the T-pipe communicating with the working medium entry hole 63, a second end of the T-pipe with communicates with the liquid reservoir, and a third end of the T-tube communicates with the vacuum pump.
    During the test, the insulating bushing 6 of the heat pipe type to be tested is tested with a first degree of vacuum by the test device. After completion of the test, the heat-conducting working medium in the conductive rod 64 of the insulating bushing 6 of the heat pipe type to be tested is discharged and the conductive rod is dried. Then, the vacuum pump is connected to the working medium entry hole 63 of the heat pipe type insulating bushing through the T-pipe, the vacuum meter detects the degree of vacuum in the conductive rod 64, and the vacuum pump adjusts the degree of vacuum in the conductive rod 64 according to the degree of vacuum detected by the vacuum gauge that the pressure in the conductive rod 64 reaches a second degree of vacuum, as required in the test, and a pipeline between the vacuum pump and the working medium entry hole 63 is disconnected. Finally, the liquid reservoir fills the thermally conductive working medium through the T-tube into the conductive rod 64, and the test device checks the insulating duct of the heat pipe type with the second degree of vacuum. By repeating the above-mentioned process, the temperature influence on the insulating duct 6 of the heat pipe type can be checked under various vacuum levels, such as a third vacuum level and a fourth vacuum level.
    It is important to note that the first degree of vacuum, the second degree of vacuum, the third degree of vacuum and the fourth degree of vacuum can be determined according to practical circumstances and are not limited in this embodiment.
    In this embodiment, the vacuum pump device adjusts the degree of vacuum in the insulating duct 6 of the heat pipe type such that the temperature influence on the degree of vacuum in the conductive rod 64 of the insulating duct 6 of the heat pipe type is checked, and thus the performance test of the insulating duct 6 of the Heat pipe type is realized under different vacuum levels.
    Referring to Fig. 4, in each of the above embodiments, the test apparatus may further include: a liquid level detector 9 and / or a pressure detector 10. More specifically, the test apparatus may further include the liquid level detector 9 or the pressure detector 10, or the test apparatus may also the liquid level detection device 9 and the pressure detection device 10.
    The liquid level detection device 9 is arranged on the inner wall of the conductive rod 64 of the insulating bushing 6 of the heat pipe type and is set up to detect the liquid level of the heat-conducting working medium in the conductive rod 64 of the insulating bushing 6 of the heat pipe type under various test parameters.
    The pressure detection device 10 is arranged on an inner wall of the conductive rod 64 of the insulating bushing 6 of the heat pipe type and is configured to detect the pressure in the conductive rod 64 of the insulating bushing 6 of the heat pipe type under various test parameters.
    In this embodiment, by means of the liquid level detection device 9 and / or the pressure measuring device 10, the situation of the change in state of the heat-conducting working medium in the conductive rod 64 during operation of the insulating bushing 6 of the heat pipe type can be better detected under various test parameters and the performance of the insulating bushing 6 of the heat pipe type can be better analyzed and evaluated.
    In each of the above-mentioned embodiments, the insulating bushing 11 is replaced by the insulating bushing of the heat pipe type to be tested. Therefore, the tester can test the performance of two heat pipe type insulating bushings.
    In a particular implementation, the test device can test two insulating bushings of the heat pipe type at the same time, or check the same test parameters of the two insulating bushings of the heat pipe type at the same time, or check different test parameters of the two insulating bushings of the heat pipe type. These are not limited in this embodiment.
    In this embodiment, two insulating bushings of the heat pipe type to be tested, the first conductive rod 2 and the second conductive rod 3 form a closed circuit. Therefore, not only can the performances of the two insulating bushings of the heat pipe type be checked under different test parameters, but also the test parameters of the two insulating bushings of the heat pipe type can be the same or different, whereby the test efficiency is effectively improved. On the other hand, the accuracy of the performance test of the insulating duct of the heat pipe type is also guaranteed.
    Referring to FIGS. 1 and 2, the test apparatus in each of the above embodiments may further include: a heater 12 and a heat sink 13. The heater 12 and heat sink 13 constitute a device of the oil tank 1 for adjusting the oil temperature. The heating device 12 is arranged in the oil tank 1 and is set up to increase the temperature in the oil tank 1. The heat sink 13 is arranged on an outer wall of the oil tank 1 and is set up to reduce the temperature in the oil tank 1. More specifically, the heating device 12 is arranged on the bottom of the oil tank 1. The heat sink 13 can be a cooler.
    In a particular implementation, the test device may further include: a controller. The controller is connected to the heating device 12 or the heat sink 13 and is set up to control the heating device 12 and the heat sink 13 for setting the temperature in the oil tank 1.
    In this embodiment, the heater 12 and the heat sink 13 jointly control the temperature in the oil tank 1 and the temperature in the oil tank 1 can be better adjusted to simulate an actual working environment of the heat pipe type insulating bushing 6, thereby improving the accuracy of the Performance testing of the insulating bushing 6 of the heat pipe type is improved.
    Referring to FIGS. 1 and 2, the test device in each of the above embodiments may further include: an expansion tank 14. The expansion tank 14 is connected to the oil tank 1 and configured to control the amount of oil in the oil tank 1 so set that normal operation of the insulating bushing 6 of the heat pipe type is guaranteed.
    In summary, in this embodiment, the generated amount of heat of the conductive rod 64 in the insulating pipe 6 of the heat pipe type is adjusted by adjusting the closed circuit current through the step-down transformer 5, and the generated amount of heat of an inner insulating layer of the insulating pipe 6 of the heat pipe type is adjusted by adjusting the voltage of the closed circuit via the voltage generator 4 so that the test device can better simulate an actual operating state of the insulating bushing 6 of the heat pipe type, and the temperature detection device 7 detects the temperature of the insulating bushing 6 of the heat pipe type to perform a performance test of the insulating bushing 6 of the heat pipe type. In addition, the test apparatus can comprehensively examine the feasibility of the insulating pipe 6 of the heat pipe type under various test parameters, and can also test the safety and reliability of the insulating pipe 6 of the heat pipe type under conditions of operation at full voltage and full current, thereby alleviating the problem in the prior art, that the performance of an insulating bushing of the heat pipe type cannot be checked.
    Obviously, those skilled in the art can make various modifications and transformations without departing from the spirit or scope of the invention. Therefore, when these modifications and transformations of the disclosure relate to the scope of the claims of the disclosure and equivalent technologies, the disclosure is intended to include these modifications and transformations.
    Industrial Applicability According to the technical solution in one embodiment of the disclosure, the amount of heat generated by a conductive rod in an insulating duct of the heat pipe type is adjusted by adjusting the current of a closed circuit via a step-down transformer, and the amount of heat generated by an inner insulating layer of the insulating duct of the heat pipe type is adjusted by adjusting the closed circuit voltage via a voltage generator so that the test apparatus can better simulate an actual operating condition of the heat pipe type insulating bushing. A temperature detection device detects the temperature of the insulating duct of the heat pipe type in order to achieve a performance test of the insulating duct of the heat pipe type. In addition, the test apparatus can comprehensively examine the feasibility of the heat pipe type insulating bushing under various test parameters, and can also test the safety and reliability of the heat pipe type insulating bushing under the conditions of operation at full voltage and full current, thereby alleviating the problem in the prior art that the Performance of an insulating bushing of the heat pipe type cannot be checked.
    权利要求:
    Claims (10)
    [1]
    claims
    A test device for testing an insulating bushing of the heat pipe type, comprising: an oil tank (1), a temperature detection device (7), an insulating bushing (11), a first conductive rod (2) arranged inside the oil tank, a voltage generator (4) located outside the oil tank, a step-down transformer (5) and a second conductive rod (3), the oil tank (1) being provided with a first connection hole and a second connection hole on a top wall of the oil tank (1); an insulating duct (6) of the heat pipe type to be tested is connected to and penetrates the first connection hole; the insulating bushing (11) is connected to and penetrates the second connection hole; a first end (61) of the insulating duct (6) of the heat pipe type and a first end of the insulating duct (11) inside the oil tank (1) are connected by the first conductive rod (2); a second end (62) of the insulating duct (6) of the heat pipe type and a second end of the insulating duct (11) outside the oil tank (1) are connected by the second conductive rod (3); the heat pipe type insulating bushing (6), the insulating bushing (11), the first conductive rod (2) and the second conductive rod (3) form a closed circuit; the step-down transformer (5) is externally attached to the insulating duct (6) of the heat pipe type by means of a sleeve and is arranged to set a current of the closed circuit; the voltage generator (4) is connected to the insulating duct (6) of the heat pipe type and is set up to set a voltage of the closed circuit; and the temperature detection device (7) is arranged inside the insulating bushing (6) of the heat pipe type and is configured to detect a temperature of the insulating bushing (6) of the heat pipe type.
    [2]
    2. Test device for testing an insulating bushing of the heat pipe type according to claim 1, wherein the insulating bushing (6) of the heat pipe type and the top wall of the oil tank (1) are arranged at an angle to one another.
    [3]
    3. A test device for testing an insulating bushing of the heat pipe type according to claim 2, further comprising a connecting sleeve (8) which is arranged outside the oil tank (1), a first end (81) of the connecting sleeve (8) being detachable with the first connecting hole is connected, an axis of the connecting sleeve (8) and a plane in which the top wall of the oil tank (1) is located form a predetermined angle, and the insulating duct (6) of the heat pipe type is detachably connected to the connecting sleeve (8) and going through this.
    [4]
    The test device for testing an insulating bushing of the heat pipe type according to claim 1, further comprising a liquid reservoir, wherein a working medium inlet hole (63) is provided on an upper wall of a conductive rod (64) of the insulating bushing (6) of the heat pipe type, the working medium inlet hole ( 63) is connected to the liquid reservoir, and the liquid reservoir is set up to introduce a heat-conducting working medium into the conductive rod (64).
    [5]
    5. The test apparatus for testing an insulating bushing of the heat pipe type according to claim 4, further comprising a property detection device, wherein the property detection device is connected to the liquid reservoir and configured to detect a property of the heat-conducting working medium in the liquid reservoir; and the liquid reservoir is further configured to determine a property of the heat-conducting working medium fed into the conductive rod (64) according to a detection result of the property-detecting device after the working medium has been filled into the conductive rod (64).
    [6]
    6. The test apparatus for testing an insulating bushing of the heat pipe type according to claim 4, further comprising a vacuum pump device, the vacuum pump device being connected to the working medium inlet hole (63) and being set up to set a degree of vacuum in the conductive rod (64).
    [7]
    7. A test device for testing an insulating bushing of the heat pipe type according to one of claims 1 to 6, further comprising a liquid level detection device (9) and / or a pressure detection device (10), the liquid level detection device (9) on an inner wall of the conductive rod (64). the insulating duct (6) of the heat pipe type is arranged, and the liquid level detection device (9) is arranged to detect a liquid level of the heat-conducting working medium in the conductive rod (64); and the pressure detection device (10) is arranged on the inner wall of the conductive rod (64) of the insulating duct (6) of the heat pipe type, and the pressure detection device (10) is arranged to detect a pressure in the conductive rod (64).
    [8]
    8. Test device for testing an insulating bushing of the heat pipe type according to one of claims 1 to 6, wherein the insulating bushing (11) is a testable, insulating bushing of the heat pipe type.
    [9]
    The test apparatus for testing an insulating bushing of the heat pipe type according to any one of claims 1 to 6, further comprising: a heater (12) disposed in the oil tank (1); and a heat sink (13) which is arranged on an outer wall of the oil tank (1).
    [10]
    10. A test device for testing an insulating bushing of the heat pipe type according to one of claims 1 to 6, further comprising an expansion vessel (14) which is connected to the oil tank (1) and is set up to adjust an oil quantity in the oil tank (1).
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    同族专利:
    公开号 | 公开日
    WO2018045794A1|2018-03-15|
    CN106226633A|2016-12-14|
    CN106226633B|2020-01-03|
    引用文献:
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    CN102522161B|2011-12-26|2013-07-31|张健|Insulator with temperature monitoring function|
    CN102589844B|2012-02-06|2014-12-03|北京工业大学|Thermal performance measurement system of solar thermal collector and method|
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    CN106226633B|2016-09-09|2020-01-03|中国电力科学研究院|Heat pipe type insulating sleeve testing device|CN106226633B|2016-09-09|2020-01-03|中国电力科学研究院|Heat pipe type insulating sleeve testing device|
    CN107643131B|2017-09-01|2019-08-20|东南大学|A kind of heat pipe-type temperature measuring apparatus and method|
    CN108896807B|2018-06-01|2021-08-03|清华大学深圳研究生院|High-voltage bushing|
    CN109099579B|2018-07-09|2022-03-04|中国电力科学研究院有限公司|Transformer oil heating device for high-voltage bushing insulation test|
    CN109470382A|2018-10-18|2019-03-15|中国电力科学研究院有限公司|Temperature monitoring device and high-pressure insulating ring guard system|
    法律状态:
    2018-11-15| PCAR| Change of the address of the representative|Free format text: NEW ADDRESS: POSTFACH, 8032 ZUERICH (CH) |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201610815261.8A|CN106226633B|2016-09-09|2016-09-09|Heat pipe type insulating sleeve testing device|
    PCT/CN2017/090389|WO2018045794A1|2016-09-09|2017-06-27|Test device for heat pipe-type insulating sleeve|
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