• 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:

    公开号:SU1005671A3
    申请号:SU792705006
    申请日:1979-01-03
    公开日:1983-03-15
    发明作者:Ален Гратцмюллер Клод
    申请人:За витель；
    IPC主号:
    专利说明:

    The invention relates to a system for hydraulically controlling an electric switch remotely controlled from a command transmitter.
    A device is known for remote control 5 of a circuit breaker comprising a hydraulic cylinder, the piston of which is driven. by elastic means, and the rod is connected to a switch, a control unit located in the immediate vicinity of the cylinder, including a source of liquid under pressure, a liquid reservoir, a supply trigger valve with supply and release valves, and a remote control unit. Panami [1], 15
    The disadvantage of this device is that the known control units contain, in addition to hydraulic equipment, also electrical equipment, and therefore it is necessary to install in the immediate vicinity of the power supply of each switch or module a cabinet that closes these devices, another cabinet, the so-called control cabinet, is provided for the protection of hydraulic and electrical equipment for the safety of monitoring the open or closed position of one or more switches 2 and transmitting after controlling the possibility of command Running from the command transmitter. Finally, hydraulic connections must connect the control cabinet to the control unit of each switch.
    The aim of the invention is to increase the reliability of the device.
    The goal is achieved in that in the device for remote control of the electric switch, the supply and release valves are equipped with hydraulic cylinders with pistons, the rods of each cylinder are connected to the movable element of the corresponding valve, and the supra-piston cavity of each valve is connected by a pipe to a liquid source under pressure, and the piston cavity of the valves are connected with a source of liquid under pressure through the control compartment by pipes, which include an element for limiting throughput and trigger solenoid valve instant action.
    Pipes are made flexible small section.
    In FIG. 1 shows a diagram of a device for controlling one switch, a section; in FIG. 2 - hydraulic control devices for on and off control valves, section; in FIG. 3 is a diagram 5 of a device for centrally controlling a plurality of switches or switch modules; in FIG. 4 is a diagram of a device equipped with additional means of switching on and off. 10
    In FIG. 1 shows an electric switch in the form of a movable contact 1 and two fixed contacts 2 and 3, the movable contact being actuated using a hydraulic cylinder rod 4
    5. The circuit breaker shown is of a type with an elastic constant reverse stroke to an open position. The means of the reverse elastic stroke can be formed by a spring 6 (see Fig. 1), as well as a liquid χ under pressure. The control unit 7 contains a power-release valve 8, adapted to install either a connection between the cylinder 5 and a source of liquid under pressure, such as a hydropneumatic 25 accumulator 9 (turning on the switch and keeping it turned on), or a connection between the cylinder 5 and the low pressure tank 10 ( switch off).
    The valve 8, which serves to power and quickly clean the cylinder 5, is actuated in one of its positions by the control valves of the control valves 11 and 12, which are actuated instantly. The control valves 11 and 12 are actuated by a hydraulic pressure reduction signal 35 .
    The control valves 11 and 12 are driven by manostatic hydraulic devices 13-14, which are connected to the corresponding control valve.
    Hydraulic devices 13-14 contain cylinders divided by pistons 15-16 into two chambers 17-18. 45
    The piston rods 19 and 20 act on the shutters 21 and 22 of the control valves 11 and 12 of the control unit, in FIG. 2 valves are presented in the normal rest position. Chambers 18–18 have an input 50 of 23–24 and are constantly connected via pipelines 25 to a pressure of accumulator 9, while chambers 17–17 have an inlet 26–27 and are connected to hydraulic pipelines 28-29 (control pipelines. 55), in which the pressure can be reduced from the control cabinet 30 (Fig. 1). The control cabinet 30 may be located a few meters from the controlled switch.
    The control pipelines · 28-29, which have an outlet in the control cabinet 30, are constantly supplied with hydraulic fluid under pressure by connecting via pipelines 31 to the accumulator 9, which can be provided in or adjacent to the control cabinet.
    In the position shown in FIG. 2, the pressure exerted on the pistons 15-16 in the chambers 18-18 is balanced by the pressure exerted on the opposite sides of the pistons by the liquid under the pressure contained in the chambers 17-17, and the force of the springs 32-33, which compensates for the difference in the active surfaces of the two sides piston due to the presence of rods 19-20:
    In the resting position of the control valves 11-12, the shutters 21-22 of these valves are closed.
    On the pipe 28 in the control cabinet 30 there is a release valve 34, which in the normally closed position connects the pipe 28 to the pipe 35 for communication with the accumulator 9. In the open position of the valve 34, the pipe 28 is in communication with the low pressure tank 36. On the pipe 35 there is a passage restriction element. abilities 37.
    The drain valve 34 is primarily an electrovalve acting instantaneously with an ultra-fast solenoid 38.
    . The control pipe 29 of the shutdown control valve 12 is also equipped with an electric release valve 34.
    The device works as follows image #. In the presented position, the pipelines 35-28 and the chamber 17 of the hydraulic device 13 are filled with a liquid with a pressure R. The pipelines 31-25 and the chamber 18 are filled with a liquid with the same pressure R.
    If the solenoid valve 34 is instantly energized using a command transmitter located in the control compartment of the electrical installation, the pressure in the pipe 28 decreases by the value of DR in the same way as in the chamber 17. Since the pressure P in the chamber 18 exceeds the sum of the pressure in the chamber 17 (P-DR ) and the force of the spring 32, the piston 15 is lowered (Fig. 2) and opens the shutter. inclusion control valve 11. Control valve. 11 establishes in the open position a connection between a conduit 39 connected to the battery 9 and another conduit 40 connected to a control cylinder (not shown) of the main power-release valve to bring the latter into the power position (see FIG. 1).
    After the instantaneous on signal disappears, the valve is kept in the supply position by the hydraulic system · ί autosave. On the pipeline 40 is located. 41. The check valve 5
    After the instantaneous turn-on signal disappears from the drain electrovalve 34, the latter closes and the pipeline 28 is again supplied at low flow rate using the pipeline 35 through the restriction element 37. * ® The pressure in the chamber 17 becomes equal to the pressure in the chamber {& 18, this pressure P is lower than the initial pressure pressure P due to the fact that the accumulator 9 has consumed 'a certain amount of oil, necessary for turning off. 15 bodies to the on position. The hydraulic pressures between the two chambers 17 and 18 are identical, the piston 15 rises, and the shutter 21 is supported by a spring, closes. The hydraulic devices 13, 211 thus again occupy a resting position (see FIG. 2).
    If the new pressure P is lower than the restart pressure of the battery recharge pump 42, the pump recharges the battery ”9 'with a small cross-section pipe 31' to the selected pressure P, and the pressures in the chambers 17 and 18 remain always equal and, therefore, the control valve remains closed. Sound
    The control of the shutdown control valve 12 by means of a drain electrovalve 34 is identical to the control of the shutdown control valve 11. If the control valve 12 is open, it connects a pipe 43, 35 connected to the hydraulic autosave system (not shown) of the control unit 8 to the low pressure tank 44.
    Thus, the invention enables remote control of switched al ents from the control cabinet by using only a small section of hydraulic connections ^ Piping 28, 29 and 31), such as tubes with an internal diameter of 3 mm, is easily installed due to the fact that they razmo- 43 tans and non-rigid.
    On the other hand, the valves 11 and 12 are actuated simply by a pressure reduction signal in the control pipes 28-29 without these pipes being necessarily deflated to atmospheric pressure. Thus, a very fast response, since the reduction of oil pressure in the pipes 28-29, is sufficient to actuate hydraulic devices, and a decompression wave propagation 55 appreciably with the speed of sound in the oil. This quick response is especially valuable for tripping a circuit breaker for safety reasons.
    In addition, the absolute value P and g of the oil pressure in the control system does not affect the reliability of the proposed device at all, the hydraulic signal * consists only in a relative decrease in pressure. Of particular interest is a device designed to simultaneously control multiple switches or multiple switch modules from a central control cabinet. In FIG. Figure 3 shows the case of two modules controlled by a control unit 7 and located at a certain distance from one another. In this case, two switch-on control pipelines 28 and 45 are connected at a common point 46 of the control cabinet 47, and a single drain electrovalve 34 allows, when it is energized, to reduce the pressure in two pipelines 28 and 45 at once, i.e., simultaneously transfer them to two control units 7 and 48 hydraulic enable signal; similarly, in two shutdown control pipelines 29 and 45 *, which are connected at a common point 46 'of the control cabinet, it is possible. at the same time, reduce the pressure using a single 34 g electric release valve for transmitting to the two control units 7 and 48 a hydraulic shutdown command.
    Manual control of switching the system of switches on or off is performed: by manually actuating the solenoid valves 34 and 34 *, respectively.
    Only a local hydropneumatic accumulator 9 can be provided in the device in the vicinity of each module, that is, in each of the control units 7 and 48. These batteries are recharged through pipelines identical to pipeline 31 (Fig. 1) using the pump 42 provided in the control cabinet 47. In addition, an additional central battery 9 may be provided.
    In some installations, for safety reasons, several on / off controls may be located.
    In the proposed device, it is sufficient to place an additional release valve in the control pipelines 28-29—45–45 *, except for the main valve 34 or 34 *, which is provided in the central control cabinet.
    For example, in the device, for simultaneous control of two switches or module ·, switches 5 and * 5 are installed on an off-line control wire 29 nearby or in control box 7, an additional shut-off electrovalve 49 is installed, in addition, such a valve is installed on the 45 * control unit 48 of the second
    - 1005671 "module. The instantaneous excitation of one of these electrovalves causes the shutdown of two modules (or all modules), as pipelines 29 and 45 ’are connected.
    This system interferes with the full execution of the J action command, especially the enable command, if the simultaneous action of all modules is not respected. The system includes a mismatch sensor formed by a differential pressure sensor 50 containing 10 a cylinder, in which a free piston 51 installs two chambers 52–53, which are constantly in communication via pipelines 54–55 with cylinder chambers 5–5. In the event of a pressure difference, the piston 52 moves and actuates the control device 56, causing all the switches to turn off, which precludes dangerous simultaneous switching on.
    According to the invention, the device 50 controls the opening of an additional drain valve 57 located on the shutdown control pipe 29 (or 45 *). Opening valve 57 lowers the pressure simultaneously in pipelines 29 and 45, and 25 thus interrupts the action of turning on all modules in the event of a mismatch, since the primary main shutdown command is given. The control link 58 between the device 56 and the release valve 57 may be 30 an electric link, or preferably a mechanical link.
    ! Due to the fact that the proposed device does not have a hydraulic connection with a large cross-section with a large flow rate between the control units 7–48 and the control cabinet 30 and 59, only pipelines of a thick section, such as 28–29–45–45 * –31–54 —55, which can be unwound, non-rigid, no shock or dynamic force is subsequently transmitted by the switches to the control cabinet. Indeed, the switches are devices that operate roughly and control cabinets are often relatively short-lived cover accessories such as registri- de- vice 5, relay and so on. E., Which is often mess up the blows transmitted through the pipelines of large cross section.
    In addition, hydraulic shocks transmitted to the cabinet by large-flow pipelines with a large flow rate could cause untimely switching of the electric valves and, therefore, untimely actions of the switches.
    Thus, the proposed invention improves the reliability of the device.
    权利要求:
    Claims (2)
    [1]
    31 In FIG. 1 shows a diagram of a device for controlling one switch, a slit; in fig. 2 - hydraulic control devices for on / off control valves, section; in fig. 3 is a diagram of an apparatus for centrally controlling a plurality of switches or switch modules; in fig. 4 is a diagram of an apparatus provided with additional means of switching on and off. FIG. Figure 1 shows an electrical switch in the form of a movable contact 1 and two fixed contacts 2 and 3, the year-round contact being actuated by means of a hydraulic piston rod 4 Shch01sh1 5. The switch presented is of the type with elastic constant return to the open position. Means of reverse elastic motion can be formed by a spring 6 (see Fig. 1), as well as a liquid under pressure. The control unit 7 contains a supply - release valve 8 adapted to establish either the connection between the cylinder 5 and the source of liquid under pressure, such as a hydropneumatic accumulator 9 (turning the switch on and keeping switched on) or the connection between the distance 5 and the low pressure reservoir 10 (off switch). The valve 8, which is used to power and quickly clean the cylinder 5, is actuated in one of its positions by control valves - inclusion valves 11 and 12 which are instantly actuated. Control valves 11 and 12 are actuated using a hydraulic low pressure signal. Control valves 11 and 12 are set in motion by means of maiostatic hydraulic devices 13-14, which are connected to the corresponding control valve. Hydraulic devices 13-14 containing cylinders, divided by parshes 15-16 into two chambers 17-18. The rods 19 and 20 of the axle act on the control valve 11 and 22 of the control unit 11 and 1.2 of the control unit, FIG. 2, the valves are in the normal resting position. Chambers 18-18 incorporate inlet 23-24 and are permanently connected via pipelines 25 to the pressure of battery 9, while chambers 17-17 have inlet 26-27 and are connected to hydraulic piping 28-29 (control piping), in which the pressure from control cabinet 30 can be lowered (Fig. 1). The control cabinet 30 may be located 1 meters away from the controllable switch. Control pipes 28-29, which have an outlet in the control cabinet 30, are continuously supplied with hydraulic fluid under pressure by connecting via pipelines 31 to the accumulator 9, which may be provided in or near the control cabinet. In the position shown in FIG. 2, the pressure exerted on the molds 15-16 in the chambers 18-18 is balanced by the pressure exerted on opposite sides by the thickened liquid under pressure contained in the chambers 17-17 and the force of the springs 32-33, which compensates for the difference in the active surfaces of the two sides piston due to the presence of rods 19-20: In the resting position of the control valves 11-12, the valves 21-22 of these valves are closed. The pipeline 28 in the control cabinet 30 has a release valve 34 which, in its normally closed position, connects the pipeline 28 with the communication pipeline 35 to the battery 9. In the open position of the valve 34, the pipeline 28 communicates with the low pressure reservoir 36. The element 35 is located on the pipeline 35 bandwidth restrictions. capabilities 37. The drain valve 34 is predominantly an electro-valve, which acts instantaneously by means of an ultra-fast electromagnet 38. The control pipe 29 of the control valve of the inlet pump 12 is also equipped with the trigger electro-valve 34. The device operates as follows o6pa3otj. In the position shown, the piping 35-28 and the chamber 17 of the hydraulic device 13 are filled with liquid with pressure P. The pipelines 31-25 and chamber 18 are filled with liquid with the same pressure R. If electric valve 34 is instantly energized using a command transmitter located in the control room of the electrical installation, in the pipeline 28, the pressure on the largest LR decreases in the same way as in chamber 17. Since the pressure P in chamber 18 exceeds the sum of the pressure in chamber 17 (P-DR) and the spring force 32, the piston 15 descends (Fig. 2) and opens the flap. firing control valve 11. control valve. 11, in the open position, establishes a connection between pipeline 39, connected to battery 9, and another pipeline 40, connected to the control cylinder (not shown) of the main power-down valve, to bring the latter to the power position (see Fig. 1 ). After the instant on signal disappears, the valve is maintained in the feed position by the hydraulic system 1 of autosave. A return valve 41 is located on the pipe 40. After the instantaneous switch-on signal from the drain valve 34 disappears, the latter closes and the dream pipeline 28 is supplied at a weak flow with the help of pipe 35 through restriction element 37 The pressure in chamber 17 becomes equal to the pressure in the chamber p6 18, this pressure P is lower than the original pressure P due to the fact that the battery 9 has consumed - some amount of oil required to bring the body to the on position. The hydraulic pressures between the two chambers 17 and 18 are identical, the piston 15 is raised, and the flap 21 is supported by a spring, closed. Hydraulic devices 13, thus, again occupy the rest position (see Fig. 2). If the new pressure P is below the pressure of the rotary start of the pump 42 of recharging the batteries, the pump recharges the battery 9 using a pipeline with a small section 31 to the selected pressure P, and the pressures in chambers 17 and 18 remain always equal and, consequently, the control valve remains closed. The shut-off control valve 12 is controlled by means of a drain valve on 34 identical to the control of the on control valve 11. If the control valve 12 is open, it connects the pipeline 43 connected to the hydraulic autosave system (not shown) of the control unit 8 with the low pressure reservoir 44 Thus, the invention allows for remote control of a switch from a control cabinet using only small cross-section hydraulic connections (test lines 28, 29, and 31), for example, tubes with an internal diameter rum up to 3 mm, easily installed due to the fact that they are unwound and non-rigid. On the other hand, the And and 12 valves are actuated simply by using a pressure decrease signal in the control lines 28-29 without these lines being necessarily lowered to atmospheric pressure. In this way, a very fast response is obtained, since the reduction in oil pressure in lines 28-29 is sufficient to actuate hydraulic devices, and the decompression wave travels at the speed of sound in oil. This quick response company is especially valuable for turning off the switch for security purposes. In addition, the absolute value P and f of the oil pressure in the control system does not at all affect the reliability of the proposed device, the hydraulic signal consists only in a relative decrease in pressure. Of particular interest is a device designed to simultaneously control multiple switches or multiple switch modules from the central control panel. FIG. Figure 3 shows the case of two modules controlled by the control unit 7 and located at some distance one from the other. In this case, two control pipelines 28 and 45 are connected at common point 46 of the control cabinet 7, and a single drain valve 34 allows, when it is energized, to reduce the pressure in two pipes 28 and 45 at once, i.e. simultaneously two control units 7 and 48 padraklama signal; similarly, in two shutdown control lines 29 and 45, which are connected at common point 46 of the control unit, it is possible. Reduce the pressure at a time by using a single trigger solenoid 34 for transmitting the two hydraulic control commands to two control units 7 and 48. Manual control of switching on or off of the switch system is carried out by manually actuating the solenoid valves 34 and 34 respectively. The device can only have a local hydropneumatic accumulator 9 in the vicinity of each module, i.e., in each of the control units 7 and 48. These batteries are rechargeable through pipelines identical to pipeline 31 (FIG. 1) using a pump 42 provided in the control cabinet 47. In addition, an additional central battery 9 may be provided. Settings for the purpose of security can bgg are several switching controls and particularly off. In the proposed device, it is sufficient to arrange in the control pipes 28-29-45-45 an additional discharge valve, except for the main valve 34 or 34, provided in the central control cabinet. For example, in the device, for simultaneous control of two switches or switch modules, the additional shut-off solenoid valve 49 is installed on the tube of the shutdown control wire 29 nearby or in the control box 7, moreover, such a valve is installed on the control line 45 in the control unit 48 of the second module Instant excitation of one of these solenoid valves causes the shutdown of two modules (or all modules), as the pipelines .29 and 45 are connected. This system interferes with the complete execution of an action command, especially an enable command, if the simultaneity of all modules is not respected. The system includes a mismatch sensor formed by a differential pressure sensor 50 comprising a cylinder in which the free piston 51 installs two chambers 52-53 which are permanently connected by means of pipes 54-55 to the chambers of cylinders 5-5. In the event of a pressure difference, the slit 52 moves and actuates the control device 56, causing all the switches to be turned off, which eliminates dangerous non-modern switching. According to the invention, the device 50 controls the opening of an additional drain valve 57 located in the shutdown control pipe 29 (or 45) Opening the valve 57 lowers the pressure simultaneously in the pipes 29 and 45, and thus interrupts the actuation of all modules in the event of a mismatch. The shutdown command is given. The control connection 58 between the device 56 and the trigger valve 57 may be an electric connection or preferably: a mechanical connection. Due to the fact that in the proposed device there is no large-section hydraulic communication with a large flow rate between control units 7–48 and control cabinet 30 and 59, but only pipelines of small section, such as 28-29 45-45- 31-54 -5 which can be unwound, non-rigid, no impact force is subsequently transmitted by switches to the control cabinet. Indeed, switches are devices that function roughly, and control cabinets often attach to relatively short-lived auxiliary equipment, such as register devices, relays, etc., which are often broken by strikes transmitted through large-section pipelines. In addition, hydraulic shocks transmitted to the cabinet by large cross-section pipelines with high flow rates could cause untimely switching of the solenoid valves and, consequently, untimely actions of the circuit breakers ... Thus, the proposed invention makes it possible to increase the reliability of the device. Claim 1, A device for remote control of an electric switch, comprising a hydraulic cylinder, a piston of which is driven by elastic means, and the rod is connected to a switch, located in the immediate vicinity of the cylinder, a control unit, including a pressurized fluid source, a liquid reservoir, and a release valve with power and release valves and a valve remote control unit, characterized in that, in order to increase reliability, the power and start valves are provided With hydraulic cylinders with pistons, the stem of each cylinder is connected to the movable element of the corresponding valve, with each valve's supra piston connecting to the fluid’s history of the pressurized fluid, and the valve cavity is connected to the source of the pressurized fluid through the control compartment, which includes element of restriction of flow capacity and trigger electrovalve of instant action,
    [2]
    2. A device according to claim 1, wherein the pipes are flexible with a small section. Sources of information taken into account during the examination 1. French patent N 1028565, cl. H 01 H 33, 1954.
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    同族专利:
    公开号 | 公开日
    CA1123031A|1982-05-04|
    HU184931B|1984-11-28|
    JPS6236333B2|1987-08-06|
    ATA3879A|1984-07-15|
    EP0002985B1|1982-01-27|
    BR7900024A|1979-08-07|
    IN150996B|1983-02-12|
    US4204461A|1980-05-27|
    FR2422245B1|1982-04-16|
    JPS5497783A|1979-08-02|
    DE7838126U1|1979-10-25|
    AT377383B|1985-03-11|
    FR2422245A1|1979-11-02|
    DE2861589D1|1982-03-11|
    EP0002985A1|1979-07-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR1098565A|1954-01-15|1955-08-08|Hydraulic control device for circuit breaker, or the like|
    FR1135122A|1955-11-04|1957-04-24|Jean Louis Gratzmuller|Hydraulic control device with speed control, for circuit breaker|
    US2948262A|1956-03-02|1960-08-09|Gratzmuller Jean Louis|Pressure-limiting device|
    FR73695E|1958-06-06|1960-09-05|Comp Generale Electricite|Method of oleopneumatic control of electrical apparatus and application to a circuit breaker|
    FR1324161A|1962-06-04|1963-04-12|Continental Elektro Ind Ag|Pre-operated cut-in and cut-out valve for electric switches fitted with oleo-hydraulic control|
    FR1355701A|1963-02-06|1964-03-20|Multiple purge control device for hydraulic circuit|
    FR1423882A|1964-11-24|1966-01-07|Hydraulic control for electric circuit breaker|
    CH539940A|1971-06-04|1973-07-31|Siemens Ag|High voltage electrical circuit breaker|
    FR2266022B1|1974-03-26|1976-12-17|Gratzmuller Jean Louis|JPS6336087B2|1983-02-28|1988-07-19|Sumitomo Precision Prod Co|
    FR2547108B1|1983-05-30|1986-07-04|Gratzmuller Claude|OLEOPNEUMATIC CONTROL FOR ELECTRIC CIRCUIT BREAKERS|
    JPH0320004B2|1984-07-25|1991-03-18|Hitachi Ltd|
    US4649704A|1984-12-24|1987-03-17|Shell Offshore Inc.|Subsea power fluid accumulator|
    JPS6349435U|1986-09-12|1988-04-04|
    DE3631304C2|1986-09-13|1993-08-26|Alfred Teves Gmbh, 6000 Frankfurt, De|
    DE3710376A1|1987-03-28|1988-10-13|Asea Brown Boveri|Drive device for a movable contact arm of an electrical switchgear unit|
    US5060475A|1990-05-29|1991-10-29|Caterpillar Inc.|Pilot control circuit for load sensing hydraulic systems|
    FR2685541B1|1991-12-23|1994-04-08|Gec Alsthom Sa|CIRCUIT BREAKER CONTROL.|
    CA2127744A1|1993-07-20|1995-01-21|George P. Kokalis|Hydraulic closed loop control system|
    US7520129B2|2006-11-07|2009-04-21|Varco I/P, Inc.|Subsea pressure accumulator systems|
    US8464525B2|2007-02-07|2013-06-18|National Oilwell Varco, L.P.|Subsea power fluid recovery systems|
    US7926501B2|2007-02-07|2011-04-19|National Oilwell Varco L.P.|Subsea pressure systems for fluid recovery|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7800106A|FR2422245B1|1978-01-04|1978-01-04|
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