• 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:
    The invention relates to a sensor assembly (40) and a system for monitoring an operation of a device using the sensor assembly (40). The sensor assembly (40) includes a housing (56) including an inner surface (72) defining a cavity (74) within the housing and a proximity sensor disposed in the cavity (74). The proximity sensor includes a first terminal (80), a second terminal (82), and a substantially planar sensing coil (84) extending between the first terminal (80) and the second terminal (82). The detection coil (84) extends outwardly from the first terminal (80) such that the second terminal (82) is radially outwardly of the first terminal (80) with respect to the extent of the planar detection coil (84). The detection coil (84) comprises a temperature resistant substrate material (104) of titanium and / or a superalloy. The system includes a sensor assembly as described above and a calculator.
    公开号:CH705363B1
    申请号:CH01288/12
    申请日:2012-08-06
    公开日:2017-12-29
    发明作者:Tho Lu Dan；Arthur Campbell Lam
    申请人:Gen Electric；
    IPC主号:
    专利说明:

    Description Background of the Invention The subject matter disclosed herein relates generally to monitoring systems and, more particularly, to sensor arrangements for use in monitoring the operation of a device.
    At least some known turbine drive systems include a compressor, a combustor disposed downstream of the compressor, a turbine and a rotor assembly rotatably connected between the compressor and the turbine. Known turbine drive systems can exhibit vibrations or other behavior during operation. At least some known turbine propulsion systems include monitoring systems that include one or more sensors that measure such behavior and that determine, for example, the magnitude of the vibration occurring in a rotor assembly, a rotational speed of the rotor assembly, and / or any other suitable operating characteristic of the turbine engine system. At least some known monitoring systems utilize eddy current (EC) sensors to detect abnormalities and / or faults in a rotating machine component, such as a rotor assembly. Other known EC test equipment is used to detect cracks, stops, dents, raised material, and / or other surface imperfections, imperfections on a surface of the component, and / or to evaluate material properties of the component, e.g. the conductivity and / or the density of the component.
    Known turbine drive systems typically operate at relatively high temperatures. At least some known drive components operate at high temperatures, which can damage known EC sensors, and which can cause signal degradation, reduced signal strength, and / or reduced signal reliability. Therefore, it may be that the use of EC sensors to monitor drive components operating at relatively high temperatures is limited or not possible.
    The object underlying the present invention is to provide a sensor arrangement and a system for monitoring the operation of a device by means of which a component of a device operating in a high-temperature environment and / or a low-temperature environment can be monitored ,
    Brief Description of the Invention One aspect of the invention is the provision of a sensor assembly. The sensor assembly includes a housing having an inner surface defining a cavity within the housing and a proximity sensor disposed within the cavity. The proximity sensor has a first terminal, a second terminal and a substantially planar detection coil extending between the first terminal and the second terminal. The detection coil extends outwardly from the first terminal such that the second terminal is radially outside of the first terminal with respect to the extent of the planar detection coil. The detection coil further comprises a temperature-resistant substrate material of titanium and / or a superalloy.
    Another aspect of the invention is the provision of a system for monitoring the operation of a device. The system includes a computing device for monitoring a state of the device and a sensor device connected to the computing device. The sensor arrangement is arranged to detect a position of a component of the device and to generate a signal indicating the detected position. The sensor assembly includes a housing having an inner surface defining a cavity within the housing and a proximity sensor disposed within the cavity. The proximity sensor includes a first terminal, a second terminal and a substantially planar detection coil extending between the first terminal and the second terminal. The detection coil has a substantially spiral shape extending outward from the first terminal such that the second terminal is radially outward of the first terminal with respect to the extension of the planar detection coil. The detection coil further comprises a temperature-resistant substrate material of titanium and / or a superalloy.
    Also disclosed is an unclaimed method of manufacturing a sensor assembly for use in monitoring a device component. The method includes depositing a photoresist material on an outer surface of a sensing coil substrate material. A photoresist pattern is developed on the sensing coil substrate material having a shape substantially similar to a proximity sensor having a first terminal, a second terminal, and a substantially planar detection coil extending between the first terminal and the second terminal. The sensor substrate material is etched to form a proximity sensor.
    Short description of the drawings [0007]
    Fig. 1 is a schematic representation of an exemplary device.
    FIG. 2 is a cross-sectional view of an exemplary sensor assembly that may be used with the device shown in FIG. 1. FIG.
    FIG. 3 is a partial cross-sectional view of the sensor assembly shown in FIG. 2 and sectioned along line 3-3. FIG.
    FIG. 4 is another partial cross-sectional view of the sensor assembly shown in FIG. 2 and sectioned along line 4-4. FIG.
    FIG. 5 is a flowchart of a method that may be used to fabricate the sensor assembly shown in FIG. 2.
    Detailed Description of the Invention The exemplary sensor assemblies and systems described herein overcome at least some of the disadvantages of known monitoring systems by providing a proximity sensor that monitors a component of a device operating in a high temperature environment and / or a low temperature environment. In addition, the proximity sensor described herein has a planar detection coil of substantially helical shape including a substrate material including a temperature resistant material of titanium material and / or a superalloy. Moreover, by providing a proximity sensor having a flat detection coil, the detection coil can be manufactured using photoetching or laser cutting techniques. By providing a proximity sensor that monitors high temperature components and low temperature components, the monitoring system described herein facilitates the increase in the number of drive components that can be monitored. Moreover, by providing a planar detection coil that can be fabricated using photoetching and / or laser cutting techniques, the geometry of the detection coil can be optimized to enhance the electrical properties of the coils such that minimal electrical resistance and low inter-winding capacitance are maintained , Therefore, the linear range and the detection coil approximation performance are improved.
    FIG. 1 is a schematic view of an exemplary device 10. FIG. 2 is a block diagram of an exemplary monitoring system 12 that may be used with the device 10. In the exemplary embodiment, the device 10 is a turbine engine that typically operates at relatively high operating temperatures. However, those skilled in the art and those skilled in the art should appreciate that the present invention described herein can be practiced in any suitable device and can not be practiced only in turbine engines. For example, the device 10 may be a cooling system, such as a cryogenic system, that operates at relatively low operating temperatures. Therefore, the turbine engine 10 as described and illustrated herein is for illustration purposes only. In one embodiment, the turbine engine 10 may be a 9FA turbine or similar equipment offered by General Electric Company of Schenectady, NY.
    In the exemplary embodiment, the turbine engine 10 includes an inlet section 14, a compressor section 16 located downstream of the inlet section 14, a combustor section 18 connected downstream with the compressor section 16, a turbine section 20 downstream with the combustor section 18 and an outlet section 22. Connected to the turbine section 20 and the compressor section 16 is a rotor assembly 24 and includes a drive shaft 26 extending along a central axis 28 between the turbine section 20 and the compressor section 16. In addition, the rotor assembly 24 also includes at least one bearing member, such as at least one bearing 30, for supporting the drive shaft 26. The combustion chamber portion 18 includes a plurality of combustion chambers 32. The combustion chamber portion 18 is connected to the compressor portion 16 such that each combustion chamber 32 communicates with the compressor portion 16 is in fluid communication.
    With each combustion chamber 32, a fuel assembly 34 is connected to provide a fuel flow to the combustion chamber 32. The turbine section 20 is rotatably connected to the compressor section 16 and to an electrical generator 36 connected to the drive shaft 26 to provide electrical power during operation of the turbine engine 10. The generator 36 is connected to a power source, such as an electrical utility network (not shown) for distributing electrical energy to the utility grid.
    In the exemplary embodiment, the monitoring system 12 includes a computing device 38 coupled to a plurality of sensor arrays 40. Each sensor assembly 40 senses various operating parameters related to the operation and environmental conditions of the turbine engine 10. The sensor assemblies 40 may include vibration sensors, position sensors, temperature sensors, acceleration sensors, fluid pressure sensors, power load sensors, and / or any other sensors that provide various parameters related to the operation of the engine Turbine drive 10 capture, but not only have such sensors. As used herein, the term "parameter" refers to physical properties whose values can be used to define the operating and environmental conditions of the turbine engine 10, such as a relative position of a component, vibrations, temperatures, fluid pressures, electricity load, speed and fluid flows defined places.
    In the exemplary embodiment, the monitoring system 12 includes at least one sensor assembly 40 in the form of a proximity sensor 42. The proximity sensor 42 is to a component 44 of the turbine engine 10, such as the compressor section 16, the turbine section 20, the drive shaft 26 and / or Bearing 30 be arranged adjacently to detect a vibration and / or a relative position of the component 44 when the component rotates. The proximity sensor 42 is connected to the computing device 38 and configured to detect a position of the component 44 with respect to the proximity sensor 42 and further configured to transmit the detected position to the computing device 38.
    The computing device 38 has a processor 46 and a data storage device 48. The processor 46 is communicatively coupled to the proximity sensor 42 and includes any suitable programmable circuit including one or more systems and microcontrollers, microprocessors, RISC, application specific integrated circuits (ASIC), programmable logic circuits (PLC), in the (application) field programmable (logic) gate array (FPGA) and any other circuit capable of performing the functions described herein. The methods described herein may be encoded as executable instructions embodied in a non-transitory computer-readable medium, such as a memory device and / or a data storage device. Such instructions, when executed by a processor, cause the processor to perform at least part of the methods described herein. In the exemplary embodiment, data storage device 48 is one or more devices that enable information, such as executable instructions and / or other data, to be selectively stored and retrieved. The data storage device 48 may include one or more computer-readable media, such as dynamic random access memory (DRAM), static random access memory (SRAM), solid-state disk storage, and / or a hard disk. The data storage device 48 may be configured to store executable instructions and / or any other type of data suitable for use with the methods described herein.
    The computing device 38 also includes a display 50 for displaying a graphical representation and / or message to a user. The display 50 is connected to the processor 46 and may include a vacuum fluorescent display (VFD) and / or one or more light emitting diodes (LED). Additionally or alternatively, the display 50 may include a liquid crystal display (LCD), a cathode ray tube (CRT) display, a plasma display, and / or any suitable optical output device capable of displaying graphical data and / or text to the user. In the exemplary embodiment, the user may be presented on the display 50 with a vibration of the component 44, a position of the component 44, and / or any other information. In addition, the user may be presented on the display 50 with a graphical representation of the position and / or vibration of the component 44.
    During operation, the inlet section 14 channels air toward the compressor section 16. The compressor section 16 compresses the inlet air to a higher pressure and temperatures and discharges the compressed air toward the combustor section 18. Fuel is channeled from the fuel assembly 34 to each combustor 32, where it is mixed and ignited in the combustor section 18 with the compressed air. The combustor section 18 channels combustion gases to the turbine section 20, wherein the thermal energy of the gas stream is converted to rotational mechanical energy to drive the compressor section 16 and / or generator 36. The exhaust gases exit the turbine section 20 and flow through the outlet section 22 into the ambient atmosphere or a utility such as a heat recovery system. In the exemplary embodiment, the proximity sensor 42 generates eddy currents to generate a signal indicative of position and / or vibration of the component 44. More specifically, the proximity sensor 42 generates eddy currents to produce a signal indicative of a gap 52 or clearance between the rotating machine components 44, such as a gap between the drive shaft 26 and the proximity sensor 42. The proximity sensor 42 can continuously signal , periodically or only once and / or according to any other timing scheme that allows the computing device 38 to monitor the state of the device 44. In addition, the proximity sensor 42 may transmit a signal in either an analog form or in a digital form. The computing device 38 receives the generated signal from the proximity sensor 42 and calculates a position and / or a vibration of the device 44 based at least in part on the received signal. In addition, the computing device 38 displays on the display 50 a graphical representation of the calculated position and / or the calculated vibration of the component 44. In addition, the computing device 38 may generate an audible or visual alarm signal if the state of the component 44 is outside predetermined thresholds.
    Fig. 2 is a cross-sectional view of an exemplary sensor assembly 40. Fig. 3 is a partial cross-sectional view of the sensor assembly 40, taken approximately along line 3-3. FIG. 4 is a partial cross-sectional view of the sensor assembly 40 taken approximately along the line 4-4. FIG. In the exemplary embodiment, the sensor assembly 40 includes a probe housing 54, a sensor housing 56 connected to the probe housing 54, and a proximity sensor 42 disposed within the sensor housing 56. The sensor housing 56 has a side wall 58 which extends between a front end wall 60 and an opposite rear end wall 62. The rear end wall 62 is closer to the probe housing 54 than the front end wall 60 and is arranged such that the sensor housing 56 is supported by the probe housing 54.
    In the exemplary embodiment, the sensor housing 56 also has an outer surface 64 which has a substantially disk-shaped shape. The front and rear end walls 60 and 62 each have a disk-shaped body 66 extending between an inner surface 68 and an outer surface 70. Sidewall 58 has a radially inner substantially cylindrical surface 72 defining a cavity 74. The cavity 74 extends between the front and rear end walls 60 and 62. The inner surface 72 extends axially along a central axis 76 between the end walls 60 and 62. The cavity 74 is sized and shaped to receive the proximity sensor 42 therein. In an alternative embodiment, the housing 56 may be triangular, square, rectangular, polygonal, or any suitable shape that allows the sensor assembly 40 to function as described herein.
    Referring to Figs. 3 and 4, in the exemplary embodiment, three perpendicular axes X, Y and Z extend through the proximity sensor 42 to define a three-dimensional Cartesian coordinate system with respect to the proximity sensor 42. More specifically, in the exemplary embodiment, the Z-axis is substantially coaxial with a center 78 of the proximity sensor 42 and arranged such that the X-axis and the Y-axis intersect to form an X-Y reference plane. In the exemplary embodiment, the proximity sensor 42 includes a first port 80, a second port 82, and a sensing coil 84 extending between the first port 80 and the second port 82.
    The detection coil 84 is substantially planar and has a substantially spiral shape 86 substantially contained in the X-Y reference plane. The detection coil 84 has a plurality of turns 88 extending outwardly from the first terminal 80 such that the second terminal 82 is disposed radially outward of the first terminal 80. In an alternative embodiment, the detection coil 84 may have a triangular, square, rectangular, polygonal, or any suitable shape to allow the proximity sensor to function as described herein.
    In the exemplary embodiment, the first terminal 80 is aligned with the center 78 and the detection coil 84 extends outwardly from the first terminal 80 such that the second terminal 82 is spaced a first distance D1 from the first terminal 80 along the X And disposed at a second distance D2 from the first port 80 along the Y-axis. In the exemplary embodiment, the second terminal 82 is aligned substantially parallel to the Y-axis and the first terminal 80 is aligned substantially parallel to the X-axis such that the second terminal 82 is substantially perpendicular to the XY reference plane first port 80 is aligned. In an alternative embodiment, the second port 82 may be oriented obliquely to the first port 80 or the second port 82 may be aligned substantially parallel to the first port 80. In one embodiment, the detection coil 84 is disposed within the housing cavity 74 such that the first terminal 80 is aligned with the central axis 76. Alternatively, the detection coil 84 may be disposed within the housing 56 such that the first terminal 80 is offset a distance from the central axis 76.
    The detection coil 84 has the shape of a substantially flat, coiled bar 90 having a rectangular cross-sectional shape and a radial width W (shown in FIG. 2) measured along the XY reference plane and a thickness T, which is measured along the Z-axis. In an alternative embodiment, the detection coil 84 may have any suitable cross-sectional shape to allow the sensor assembly 40 to function as described herein. In the exemplary embodiment, the radial width W is greater than the thickness T. Alternatively, the radial width W may be less than or equal to the thickness T.
    In the exemplary embodiment, the sensor assembly 40 includes one or more interconnecting cables 92 extending between the sensing coil 84 and the computing device 38 to electrically connect the sensing coil 84 to the computing device 38 (shown in FIG. 1). Each interconnect cable 92 may include one or more electrical leads (not shown). The probe housing 54 has an inner surface 93 defining a cavity 94 sized to receive the connection cables 92 therein so that the cables 92 extend from the computing device 38 to the detection coil 84 through the probe housing 54. The housing 56 has one or more apertures 95 defined therein, each sized and shaped to pass one or more interconnecting cables 92 to connect the sensing coil 84 to the computing device 38. In the exemplary embodiment, the rear end wall 62 has a first opening 96 aligned with respect to the first port 80 and a second opening 98 aligned with the second opening 98. A first connection cable 100 extends through the first opening 96 and is connected to the first terminal 80. A second connection cable 102 extends through the second opening 98 and is connected to the second connection 82.
    In the exemplary embodiment, the sensor assembly 40 may operate in environments having operating temperatures in a temperature range of between about -200 ° C to about 1000 ° C. In the exemplary embodiment, the housing 56 and the probe housing 54 are each at least partially made of a ceramic material. In one embodiment, the housing 56 and the probe housing 54 are each made of materials comprising at least one of: alumina (for example, 92% alumina), aluminum nitride, borosilicate glass, quartz, sialon, low temperature co-fired ceramics, silicon nitride, aluminum, silicon carbide , Sapphire, zirconium or any other suitable engineering ceramic material. In the exemplary embodiment, the detection coil 84 comprises a substrate material 104 containing a titanium material. In an alternative embodiment, the substrate material 104 is or includes a superalloy, such as Inconel® or Incoloy®. Alternatively, the substrate material 104 is or includes a stainless steel or a nickel alloy, such as nickel-cobalt. In the exemplary embodiment, the detection coil 84 is fabricated from a substantially flat plate using photoetching or laser cutting.
    FIG. 5 is a flowchart of an unclaimed method 200 that may be implemented in the manufacture of the sensor assembly 40. In the exemplary embodiment, the method 200 includes depositing 202 a photoresist material on an outer surface of the sensing coil substrate material 104. A developed 204 photoresist pattern on the sensing coil substrate material 104 has a shape that is substantially similar to a proximity sensor 42 including the first port 80, the second Terminal 82 and the detection coil 84, wherein the detection coil 84 is substantially spiral. The sensing coil substrate material 104 is then etched 206 to form the proximity sensor 42. In the exemplary embodiment, the method 200 also includes forming 208 the sensing coil substrate material from materials comprising at least one of a titanium material and a superalloy material 104. In addition, the method 200 also includes forming 210 the housing 56, including the cavity 74, and inserting 212 the detection coil 84 into the cavity 74 to form the proximity sensor 42. In addition, the method 200 may include forming 214 the housing 56 from at least one ceramic material. In one embodiment, the method 200 includes forming 214 the housing 56 and / or the probe housing 54 from materials comprising at least one of: alumina (eg, 92% alumina), aluminum nitride, borosilicate glass, quartz, sialon, low temperature co-fired ceramics , Silicon nitride, aluminum, silicon carbide, sapphire, zirconium.
    A photoresist material is deposited on a first side of the substrate material 104 and also on an opposite second side of the substrate material 104. An image of the detection coil 84 is then printed on a plurality of film sheets, such as Mylar transparencies. Each printed film is applied to each side of the substrate material 104 and oriented so that each side of the substrate material 104 receives a substantially identical image of the detection coil 84. The printed films are bonded to the photoresist-coated substrate material 104 such that the portion of the photoresist material that corresponds to the shape of the detection coil 84 remains exposed. Each side of the substrate material 104 is then exposed to UV light for a predetermined period of time to cure the exposed photoresist material. Uncured photoresist material is removed from the substrate material 104 to expose the bare material. An etching solution is then applied to the substrate material 104 to effect etching and removal of the bare material from the substrate material 104. The remaining photoresist material is then removed from the substrate material to form the detection coil 84.
    The size and shape of the detection coil 84 is selected so that the sensor assembly 40 senses a position and / or vibration of a gas turbine component operating within an operating temperature range of between about -200 ° C to about 1000 ° C. Moreover, the size and shape of the detection coil 84 are selected such that the detection coil 84 can be fabricated using photoetching and / or laser cutting techniques and can include a substrate material 104 that includes a high temperature resistant material, such as titanium or a superalloy. By providing a proximity sensor that monitors high temperature components and low temperature components, the monitoring system described herein allows for an increase in the number of drive components that can be monitored as compared to the drive components that can be monitored using known monitoring systems. Moreover, by providing a planar detection coil that can be fabricated using photoetching and / or laser cutting techniques, the geometry of the detection coil can be optimized to improve the electrical properties of the coils such that minimal electrical resistance and low inter-winding capacitance are obtained , Therefore, the linear range and the detection performance of the detection coil are improved as compared with known detection coils.
    The sensor arrangements and systems described above overcome at least some disadvantages of known monitoring systems by providing a proximity sensor that can monitor a device component operating in a high temperature environment and / or a low temperature environment. Moreover, the proximity sensor described herein includes a substrate material that includes a temperature resistant material, such as a titanium material or a superalloy material. Moreover, the sensor assembly described herein includes a planar detection coil having a substantially helical shape that facilitates fabrication of the detection coil using photoetching or laser cutting techniques. By providing a planar detection coil that can be fabricated using photoetching and / or laser cutting techniques, the cost of manufacturing a monitoring system over known monitoring systems is reduced.
    Exemplary embodiments of a sensor arrangement for use in monitoring an operation of a device and a method for manufacturing the sensor arrangement are described in detail above. Rather, the exemplary embodiment may be implemented and used in conjunction with many other monitoring system applications.
    Although certain features of the various embodiments of the invention may be shown in some drawings and not in others, this is for the sake of simplicity only. In accordance with the principles of the invention, each feature of a drawing may be referred to any feature of any other drawing.
    This description uses examples to disclose the invention, including the best mode, and also to enable those skilled in the art to practice the invention, including making and using any devices or systems.
    A sensor arrangement 40 will be described here. The sensor assembly includes a housing 56 that includes an interior surface 72 defining a cavity 74 within the housing and a proximity sensor 42 disposed within the cavity. The proximity sensor includes a first port 80, a second port 82, and a substantially planar sensing coil 84 extending between the first port and the second port. The detection coil extends outwardly from the first terminal such that the second terminal is radially outside of the first terminal. The detection coil 84 further includes a temperature resistant substrate material of titanium and / or a superalloy.
    REFERENCE SIGNS LIST 10 Device 12 Monitoring System 14 Inlet Section 16 Compressor Section 18 Combustor Section 20 Turbine Section 22 Outlet Section 24 Rotor Arrangement 26 Drive Shaft 28 Centerline 30 Bearing 32 Combustion Chamber 34 Fuel Assembly 36 Generator 38 Computing Device 40 Sensor Assembly 42 Proximity Sensor 44 Component 46 Processor 48 Data Storage Device 50 Display 52 Gap 54 Probe Housing 56 Sensor housing 58 Sidewall 60 Front end wall 62 Rear end wall
    权利要求:
    Claims (7)
    [1]
    64 Outer surface 66 Disc-shaped body 68 Inner surface 70 Outer surface 72 Radial inner surface 74 Cavity 76 Center axis 78 Center point 80 First port 82 Second port 84 Detecting coil 86 Spiral shape 88 turns 90 Flat bar detection coil 92 Connection cable 93 Inner surface 94 Cavity 95 Orifices 96 First port 98 Second port 100 First Connecting Cable 102 Second Connecting Cable 104 Substrate Material 200 Method 202 Depositing Photoresist Material 204 Developing a Photoresist Pattern 206 Etching the Sensor Pulse Substrate Material 208 Forming a Sensor Coil Substrate Material 210 Forming a Case 212 Inserting the Detecting Coil 214 Forming the Case Claims
    A sensor assembly (40) comprising: a housing (56) having an inner surface (68, 72) defining a cavity (74) within the housing, and a proximity sensor (42) disposed in the cavity, the proximity sensor a first terminal (80), a second terminal (82) and a substantially planar detection coil (84) extending between the first terminal and the second terminal, the detection coil extending outwardly from the first terminal such that the second terminal is radially outwardly of the first terminal relative to the extent of the planar detection coil (84), and wherein the detection coil (84) comprises a temperature resistant substrate material (104) of titanium and / or a superalloy.
    [2]
    The sensor assembly (40) of claim 1, wherein the detection coil (84) is formed as a substantially flat coiled rod (90) having a substantially rectangular cross-sectional shape.
    [3]
    The sensor assembly (40) of claim 1, wherein the housing (56) comprises a ceramic material.
    [4]
    The sensor assembly (40) of claim 1, wherein the detection coil (84) has a substantially helical shape extending outwardly from the first port (80) to the second port (82).
    [5]
    The sensor assembly (40) of claim 1, wherein the housing (56) includes at least one opening (95) extending through the housing, the at least one opening for receiving a connection cable (92) sized to fit the proximity sensor (10). 84) to be electrically connected to a computing device (38).
    [6]
    A system (12) for monitoring operation of a device (10), the system comprising: computing means (38) for monitoring a state of the device (10) by means of a sensor assembly (40) connected to the computing device, the sensor assembly is configured to detect a position of a component of the device and generate a signal indicative of the sensed position, the sensor assembly comprising: a housing (56) having an inner surface (68, 72) defining a cavity (74) within of the housing, and a proximity sensor (42) disposed in the cavity, the proximity sensor including a first terminal (80), a second terminal (82), and a substantially planar sensing coil (84) extending between the first Terminal and the second terminal extends, wherein the detection coil of the first terminal extends outwardly so that the second terminal with respect to the extension d and wherein the detection coil (84) comprises a temperature resistant substrate material (104) of titanium and / or a superalloy.
    [7]
    The system (12) of claim 6, wherein the detection coil (84) is formed as a substantially flat coiled rod (90) having a substantially rectangular cross-sectional shape.
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    法律状态:
    2017-03-15| NV| New agent|Representative=s name: GENERAL ELECTRIC TECHNOLOGY GMBH GLOBAL PATENT, CH |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/205,371|US9932852B2|2011-08-08|2011-08-08|Sensor assembly for rotating devices and methods for fabricating|
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