CN220509027U - Automatic monitoring device for shaft voltage of 10kV high-voltage motor - Google Patents
Automatic monitoring device for shaft voltage of 10kV high-voltage motor Download PDFInfo
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- CN220509027U CN220509027U CN202322101535.5U CN202322101535U CN220509027U CN 220509027 U CN220509027 U CN 220509027U CN 202322101535 U CN202322101535 U CN 202322101535U CN 220509027 U CN220509027 U CN 220509027U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 17
- 230000000670 limiting effect Effects 0.000 claims abstract description 9
- 238000012360 testing method Methods 0.000 claims description 23
- 238000001514 detection method Methods 0.000 abstract description 14
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 239000002184 metal Substances 0.000 description 8
- 230000006378 damage Effects 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000035508 accumulation Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Abstract
The utility model relates to the technical field of voltage monitoring and provides an automatic monitoring device for the shaft voltage of a 10kV high-voltage motor, which comprises a machine shell, wherein two bearings are arranged on two sides of the machine shell, an output shaft is fixedly embedded in the bearings, two insulating gaskets are fixedly connected to two sides of the outer surface of the machine shell, a bearing block is fixedly connected to one side, far away from the machine shell, of the insulating gaskets, a fixing rod is fixedly connected to one side, far away from the insulating gaskets, of the fixing rod, a limiting plate is fixedly connected to one end, far away from the bearing block, of the bearing block, a fixing plate is fixedly connected to one side, a through groove is formed in the outer side of the fixing plate, and a rotating shaft is rotatably connected to the outer surface of the fixing rod. According to the utility model, the device is provided with the structure of stably contacting the output shaft, so that when the voltage of the motor is detected, the motor and the output shaft can stably contact the motor shaft even if the motor and the output shaft start to run at a high speed, and the detection data is accurate.
Description
Technical Field
The utility model relates to the technical field of voltage monitoring, in particular to an automatic monitoring device for shaft voltage of a 10kV high-voltage motor.
Background
Shaft currents caused by motor shaft voltages can cause severe electrical corrosion of bearings, turbine scroll wheels, and the like. In order to cut off the passage of shaft current, insulating pads are arranged under the bearing on the excitation side of the generator, under the exciter bearing and at the joints of the oil pipes of the bearing. In operation, the insulation pad may be disabled due to oil accumulation, damage or aging, etc., allowing the shaft current to flow, resulting in equipment damage. In order to check the insulation between the generator bearings and the foundation during operation, the shaft voltage of the generator should be measured periodically.
But in the prior art, for example, chinese publication No.: CN114414852a "a generator shaft voltage detection device and detection method", the utility model proposes a generator shaft voltage detection device and detection method, wherein the detection device includes an insulating block, a metal bracket and a metal contact piece, the insulating block is fixedly connected to one side of the generator body; the metal bracket is detachably connected to the insulating block through a grounding terminal, the grounding terminal is grounded through a lead, and the metal bracket is fixedly connected with a guide block for inserting the insulating guide plate; the metal contact piece passes through the bolt and can dismantle and connect on the metal support, and the lower extreme laminating of metal contact piece is in the upper surface of generator big axle, and insulating deflector separates metal contact piece and generator big axle. By adopting the detection device and the detection method, the normal grounding performance of the shaft voltage in the daily process is not affected, and an operation switch such as a breaker is not needed to be added; the influence of the annual shaft voltage measurement working process on normal grounding is minimal, and after the shaft voltage measurement working is completed, the shaft voltage is immediately recovered to be normal, so that no extra interface and action are generated for running operation management.
However, this device does not set up stable output shaft structure that contacts, result in when carrying out voltage detection to the motor, the motor is in case beginning high-speed operation, the output shaft of motor also can take place to operate, because rotate and can produce vibration and the axle has certain axle center difference, the device can't stabilize the contact motor shaft, the voltage data that obtains also has great error, the device does not set up voltage detection structure, result in when the motor shaft produces great voltage and has harm to motor device, the device can not send suggestion and warning, the staff can not obtain warning pause machine in the very first time, great influence has been produced to the life of device.
Disclosure of Invention
The utility model aims to solve the problems that in the prior art, a device is not provided with a stable contact output shaft, so that when a motor starts to run at a high speed when voltage detection is carried out on the motor, the output shaft of the motor also runs, because the motor rotates to generate vibration and a shaft has a certain shaft center difference, the device cannot be stably contacted with the motor shaft, the obtained voltage data also has larger error, and the device is not provided with a voltage detection structure, so that when the motor shaft generates larger voltage to damage the motor device, the device cannot give out prompt and warning, a worker cannot obtain warning to pause the machine at the first time, and the service life of the device is greatly influenced.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a 10kV high-voltage motor shaft voltage automatic monitoring device, includes the casing, the both sides of casing all are provided with two bearings, the inside fixed of bearing is inlayed and is equipped with the output shaft, the equal fixedly connected with of surface both sides of casing is two insulating gasket, one side fixedly connected with of casing is kept away from to insulating gasket accepts the piece, accept one side fixedly connected with dead lever of insulating gasket, the dead lever is kept away from the one end fixedly connected with limiting plate of accepting the piece, one side fixedly connected with fixed plate of accepting the piece, logical groove has been offered down in the outside of fixed plate, the surface rotation of dead lever is connected with the pivot, the surface fixedly connected with test strip of pivot, the outside fixedly connected with cock stem of test strip, the surface activity of cock stem is inlayed and is established in the inside of logical groove, the surface activity of cock stem has cup jointed the spring, the one end that the test strip was kept away from to the spring sets up at the surface of fixed plate, the one end that the spring kept away from the fixed plate sets up at the surface of test strip.
As a preferred embodiment, the outer surface of the pressure test sheet is disposed on the outer surface of the output shaft on the side away from the plug rod.
As a preferred implementation mode, the top of the outer surface of the shell is fixedly connected with a voltage detector, and the front surface of the voltage detector is fixedly connected with a voltage display screen.
As a preferred implementation mode, two wiring pipes are fixedly connected to two sides of the voltage detector, and one end, away from the voltage detector, of each wiring pipe is fixedly connected to the top of the bearing block.
As a preferred embodiment, a plurality of heat dissipation plates are fixedly connected to the outer surface of the casing.
As a preferred embodiment, the bottom of the outer surface of the shell is fixedly connected with a supporting leg.
Compared with the prior art, the utility model has the advantages and positive effects that:
1. according to the utility model, the device is provided with the structure of stably contacting the output shaft, so that when the voltage of the motor is detected, the motor and the output shaft vibrate even if starting to run at a high speed, and the shaft has a certain axial center difference, the device can stably contact the motor shaft, and the detection data is accurate.
2. According to the utility model, the device is provided with the voltage detection structure, so that when the motor shaft generates larger voltage to damage the motor device, the device can give out a prompt and a warning, a worker can be warned to halt the machine for the first time, and the service life of the device is prolonged.
Drawings
FIG. 1 is a schematic diagram of a three-dimensional structure of an automatic monitoring device for shaft voltage of a 10kV high-voltage motor;
FIG. 2 is a schematic side view of a 10kV high-voltage motor shaft voltage automatic monitoring device;
FIG. 3 is a schematic side view of a 10kV high-voltage motor shaft voltage automatic monitoring device;
FIG. 4 is an enlarged schematic diagram of the automatic monitoring device for shaft voltage of the 10kV high-voltage motor;
fig. 5 is an enlarged schematic diagram of the automatic monitoring device for shaft voltage of the 10kV high-voltage motor.
Legend description:
1. a housing; 2. a bearing; 3. an output shaft; 4. an insulating spacer; 5. a receiving block; 6. a fixed rod; 7. a limiting plate; 8. a fixing plate; 9. a through groove; 10. a rotating shaft; 11. testing the tablet; 12. a plug rod; 13. a spring; 14. a wire connection tube; 15. a voltage detector; 16. a voltage display screen; 17. a heat dissipation plate; 18. and (5) supporting legs.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the present utility model provides a technical solution: the utility model provides a 10kV high-voltage motor shaft voltage automatic monitoring device, which comprises a housing 1, the both sides of casing 1 all are provided with two bearings 2, the inside fixed embedding of bearing 2 has output shaft 3, the equal fixedly connected with of surface both sides of casing 1 is two insulating gasket 4, one side fixedly connected with of insulating gasket 4 keeps away from casing 1 holds piece 5, one side fixedly connected with dead lever 6 of insulating gasket 4 is kept away from to holding piece 5, one end fixedly connected with limiting plate 7 of holding piece 5 is kept away from to dead lever 6, one side fixedly connected with fixed plate 8 of holding piece 5, logical groove 9 has been offered under the outside of fixed plate 8, the surface rotation of dead lever 6 is connected with pivot 10, the surface fixedly connected with test strip 11 of pivot 10, the outside fixedly connected with of test strip 11, the surface activity of plug rod 12 is inlayed and is established in the inside of logical groove 9, the surface activity of plug rod 12 has cup jointed spring 13, the one end that spring 13 kept away from test strip 11 sets up the surface at fixed plate 8, the one end that spring 13 kept away from fixed plate 8 sets up the surface at the test strip 11, the effect that can be contacted the test strip 11 under spring 13 and plug rod 12 stable test strip 11 3.
As shown in fig. 1-5, the outer surface of the test piece 11 is disposed on the outer surface of the output shaft 3 on the side far away from the plug rod 12, and the test piece 11 contacts the output shaft 3 to transfer the voltage on the output shaft 3 to the receiving block 5 through the rotating shaft 10.
As shown in fig. 1-5, the top of the outer surface of the casing 1 is fixedly connected with a voltage detector 15, the front surface of the voltage detector 15 is fixedly connected with a voltage display screen 16, and the voltage detector 15 can detect the voltages at two ends of the output shaft 3 and display the voltages through the voltage display screen 16.
As shown in fig. 1-5, two wiring pipes 14 are fixedly connected to two sides of the voltage detector 15, one end, far away from the voltage detector 15, of each wiring pipe 14 is fixedly connected to the top of the bearing block 5, and wires inside the two wiring pipes 14 are connected to two ends of the output shaft 3 and are connected to the voltage detector 15.
As shown in fig. 1-5, the outer surface of the casing 1 is fixedly connected with a plurality of heat dissipation plates 17, and the heat dissipation plates 17 play a role in rapidly dissipating heat of the motor.
As shown in fig. 1-5, the bottom of the outer surface of the casing 1 is fixedly connected with a supporting leg 18, and the supporting leg 18 plays a role of fixing the motor and the whole device.
Working principle: firstly, two test sheets 11 are fixedly installed to be contacted with the outer surface of an output shaft 3, the test sheets 11 are fixedly connected with a rotating shaft 10 and a plug rod 12, the rotating shaft 10 is rotationally connected to a fixed rod 6, the plug rod 12 is movably embedded in a through groove 9 on a fixed plate 8, the test sheets 11 can be stably contacted with two ends of the output shaft 3 under the common limiting effect of the rotating shaft 10 and the plug rod 12 and the elastic effect of a spring 13, a limiting plate 7 is fixedly connected to the fixed rod 6, the limiting plate 7 can prevent the rotating shaft 10 from sliding from the fixed rod 6, when the device is electrified, the output shaft 3 can realize stable rotation under the fixing effect of a bearing 2, and the model of a voltage detector 15 on a shell 1 is as follows: PZEM-025, connect at the top of two carrier blocks 5 and be connected with pressure testing piece 11 through pivot 10 through the wire in wiring pipe 14, because pressure testing piece 11 contact connection is at the both ends of output shaft 3, insulating gasket 4 can prevent that the electric current from producing the reposition of redundant personnel from casing 1, so voltage detector 15 can detect the both ends voltage of output shaft 3, under the elasticity effect of spring 13, even machine high-speed rotation produces vibration, can also make pressure testing piece 11 stably contact output shaft 3, when the both ends voltage of output shaft 3 is too high, voltage detector 15 can detect the both ends voltage of output shaft 3 and show through voltage display 16, the staff can stop the machine immediately, repair the machine, the life of motor has been improved, the surface of casing 1 all fixedly connected with a plurality of heating panels 17, heating panel 17 play the effect to the motor is quick heat dissipation, the surface bottom fixedly connected with landing leg 18 of casing 1, landing leg 18 play the effect of fixed motor and whole device.
The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.
Claims (6)
1. The utility model provides a 10kV high-voltage motor shaft voltage automatic monitoring device, its characterized in that, including casing (1), the both sides of casing (1) all are provided with two bearings (2), the inside fixed embedded output shaft (3) of bearing (2), the equal fixedly connected with of surface both sides of casing (1) two insulating gaskets (4), one side fixedly connected with of insulating gaskets (4) keep away from casing (1) holds piece (5), one side fixedly connected with dead lever (6) of insulating gaskets (4) are kept away from to holding piece (5), one end fixedly connected with limiting plate (7) of holding piece (6) keep away from holding piece (5), one side fixedly connected with fixed plate (8) of holding piece (5), through groove (9) have been seted up down to the outside of fixed plate (8), the surface rotation of fixed lever (6) is connected with pivot (10), the surface fixedly connected with test press piece (11) of pivot (10), the outside fixedly connected with cock stem (12) of plug stem (12), the one end fixedly connected with limiting plate (7) of holding piece (12) is kept away from in the outside of moving about the spring (13) of holding piece (13), one end of the spring (13) far away from the fixed plate (8) is arranged on the outer surface of the pressure test piece (11).
2. The automatic 10kV high-voltage motor shaft voltage monitoring device according to claim 1, wherein: one side of the outer surface of the pressure test piece (11) far away from the plug rod (12) is arranged on the outer surface of the output shaft (3).
3. The automatic 10kV high-voltage motor shaft voltage monitoring device according to claim 1, wherein: the top of the outer surface of the shell (1) is fixedly connected with a voltage detector (15), and the front surface of the voltage detector (15) is fixedly connected with a voltage display screen (16).
4. A 10kV high voltage motor shaft voltage automatic monitoring device according to claim 3, characterized in that: two wiring pipes (14) are fixedly connected to two sides of the voltage detector (15), and one end, far away from the voltage detector (15), of each wiring pipe (14) is fixedly connected to the top of the bearing block (5).
5. A 10kV high voltage motor shaft voltage automatic monitoring device according to claim 3, characterized in that: the outer surface of the shell (1) is fixedly connected with a plurality of radiating plates (17).
6. The automatic 10kV high-voltage motor shaft voltage monitoring device according to claim 5, wherein: the bottom of the outer surface of the shell (1) is fixedly connected with a supporting leg (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322101535.5U CN220509027U (en) | 2023-08-07 | 2023-08-07 | Automatic monitoring device for shaft voltage of 10kV high-voltage motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322101535.5U CN220509027U (en) | 2023-08-07 | 2023-08-07 | Automatic monitoring device for shaft voltage of 10kV high-voltage motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220509027U true CN220509027U (en) | 2024-02-20 |
Family
ID=89880764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322101535.5U Active CN220509027U (en) | 2023-08-07 | 2023-08-07 | Automatic monitoring device for shaft voltage of 10kV high-voltage motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220509027U (en) |
-
2023
- 2023-08-07 CN CN202322101535.5U patent/CN220509027U/en active Active
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