CN213517252U - Generator sensor measuring system with grounding protection device - Google Patents
Generator sensor measuring system with grounding protection device Download PDFInfo
- Publication number
- CN213517252U CN213517252U CN202022111256.3U CN202022111256U CN213517252U CN 213517252 U CN213517252 U CN 213517252U CN 202022111256 U CN202022111256 U CN 202022111256U CN 213517252 U CN213517252 U CN 213517252U
- Authority
- CN
- China
- Prior art keywords
- sensor
- generator
- plug
- interface
- protection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to a generator sensor measurement system with ground protection device, including setting up the sensor on the generator body to and be used for receiving and handling the appearance accuse measurement circuit device of the data of sensor monitoring, ground protection device connects the sensor with the switch terminal of appearance accuse measurement circuit device, and be used for working as when the switch terminal is in the off-state, demountable installation in on the switch terminal with the sensor is connected and then will sensor ground connection's plug ground connection cable. The problems of clamping piece off-line processing or clamping piece damage and prefabricated cable damage in the process of connecting and disconnecting a prefabricated cable when a cabinet side signal is isolated in an original generator insulation test sensor signal loop isolation scheme are solved; the grounding treatment of the sensor is arranged, so that the sensor is prevented from being damaged due to overvoltage; the conflict that the generator sensor channel can not be arranged for verification and other work during the generator insulation test is solved, and the overhaul period is shortened.
Description
Technical Field
The utility model relates to a power plant's generator sensor measures and protects technical field, especially relates to generator sensor measurement system with ground protection device.
Background
As shown in fig. 1-2, when a generator insulation test is performed during the overhaul period of a power plant, a clamping piece side loop needs to be isolated by instrument control cooperation to avoid the influence of high voltage on a clamping piece, the conventional method is to pull out a prefabricated cable and a clamping piece safety at the front end of the clamping piece, and the isolation method has the following risks and influences:
1. the risk of damaging the pins of the prefabricated cable plug is introduced when the prefabricated cable is plugged and pulled out. In the actual operation process, one contact pin is damaged by misoperation, so that the repair is difficult and the working hours are consumed.
2. The internal sensor of the generator is not grounded, and the temperature probe of the generator can be damaged due to overvoltage.
In the actual operation process, the open-circuit fault condition of the probe occurs, the detection result is that the resistance film is melted, and the incentive is greatly from the fact that the probe is not subjected to grounding treatment during the insulation test of the generator. Through research, the method for grounding the temperature probe in the period of carrying out insulation test on the generator in some domestic thermal power plants is generally to wind a circle of copper wire at a disc to ground the probe, but the method introduces a large amount of wiring disassembly work and has high time cost.
3. Influence temperature measurement point passageway inspection work during the isolation fastener, consume the overhaul time limit for a project.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in that, a generator sensor measurement system with ground protection device is provided.
The utility model provides a technical scheme that its technical problem adopted is: constructing a generator sensor measuring system provided with a grounding protection device, wherein the generator sensor measuring system comprises a sensor arranged on a generator body and an instrument control measuring loop device used for receiving and processing data monitored by the sensor;
the grounding protection device comprises a disconnecting link terminal which is used for connecting the sensor and the instrument control measurement loop device; and the plug grounding cable is detachably arranged on the disconnecting link terminal to be connected with the sensor so as to ground the sensor when the disconnecting link terminal is in a disconnected state.
Preferably, the sensor comprises a sensor body, a lead wire connected with the sensor body, and a pin arranged at the end part of the lead wire far away from the sensor body;
and a first interface for the pin to be detachably inserted is arranged on the disconnecting link terminal.
Preferably, the pins comprise I + pins, I-pins, U + pins and U-pins.
Preferably, the plug ground cable includes a plug and a wire connected to the plug;
and a second interface for the plug to be detachably inserted is arranged on the disconnecting link terminal, and the second interface is in conductive connection with the first interface.
Preferably, the plug is a metal plug, and an insulating protective sleeve is sleeved on the periphery of the metal plug.
Preferably, the instrumentation measurement loop means comprises a data connection;
a third interface for detachably inserting the data connection wire is arranged on the disconnecting link terminal, and a disconnecting link is arranged between the third interface and the first interface;
the second interface is arranged between the disconnecting link and the first interface.
Preferably, the sensor comprises a temperature sensor.
Implement the utility model discloses following beneficial effect has: the generator sensor measuring system with the grounding protection device solves the problems of offline processing of clamping pieces or clamping piece damage and prefabricated cable damage in the process of connecting and disconnecting a prefabricated cable when a cabinet side signal is isolated in the original generator insulation test sensor signal loop isolation scheme; the grounding treatment of the sensor is arranged, so that the sensor is prevented from being damaged due to overvoltage; the conflict that the generator sensor channel can not be arranged for verification and other work during the generator insulation test is solved, and the overhaul period is shortened.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a schematic diagram of a conventional wiring loop in a related art when a generator is normally operated;
FIG. 2 is a schematic view of connection in an insulation test of a generator in the related art;
FIG. 3 is a schematic diagram of a generator sensor measurement system with a ground protection device according to the present invention;
FIG. 4 is a schematic diagram of a generator insulation test performed by the generator sensor measuring system with a ground protection device according to the present invention;
FIG. 5 is a schematic diagram of the connection between the sensor and the instrument control measurement loop device when the generator of the present invention is operating normally;
fig. 6 is a schematic diagram of the ground connection of the sensor when the generator performs the insulation test.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate that the device or element referred to must have a specific direction, and thus, should not be construed as limiting the present invention.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
As shown in fig. 3-6, the generator sensor measuring system with ground protection device of the present invention includes a sensor 1 disposed on the generator body, and an instrumentation measuring loop device 2 for receiving and processing the data monitored by the sensor 1.
The grounding protection device comprises a disconnecting link terminal 3 for connecting the sensor 1 and the instrument control measurement loop device 2, and a plug grounding cable 4 which is detachably mounted on the disconnecting link terminal 3 to be connected with the sensor 1 so as to ground the sensor 1 when the disconnecting link terminal 3 is in a disconnected state.
When the generator normally operates, the disconnecting link terminal 3 is switched on, the sensor 1 transmits monitored data to the instrument control measurement loop device 2, when the generator performs an insulation test, the disconnecting link terminal 3 is disconnected, and the plug grounding cable 4 is connected with the sensor 1 to ground the connecting link, so that the sensor 1 is protected.
In this embodiment, the sensor 1 includes a sensor body, a lead connected to the sensor body, and a pin disposed on the lead away from the end of the sensor body, and the disconnecting link terminal 3 is provided with a first interface 31 for detachably inserting the pin. Preferably, the pins include an I + pin, an I-pin, a U + pin, and a U-pin, and of course, the number of the sensor pins of different types may be different, and may be two pins, three pins, four pins, and the like, so that the corresponding number of the first interfaces 31 is provided on the disconnecting link terminal 3, or the number of the first interfaces 31 is greater than the number of the pins, so as to meet the redundancy requirement.
Preferably, the sensor 1 may be a temperature sensor for detecting the operating temperature of the generator, and may be disposed in a generator housing, an interior, or the like. Preferably, the temperature sensor can adopt a PT1000 platinum resistance temperature sensor.
Further, the plug grounding cable 4 comprises a plug and a lead connected with the plug, the plug is a metal plug, the periphery of the metal plug is sleeved with an insulating protective sleeve for insulating protection, and the cross section area of the lead is maximally 1mm2。
Correspondingly, the disconnecting link terminal 3 is provided with a second interface 32 for detachable plug-in mounting of a plug, and the second interface 32 is electrically connected with the first interface 31 to perform ground protection on the sensor 1.
In this embodiment, the instrument control measurement loop device 2 includes a data connection, and correspondingly, the switch terminal 3 is provided with a third interface 33 for detachably inserting the data connection, a switch 34 is provided between the third interface 33 and the first interface 31, the aforementioned second interface 32 is provided between the switch 34 and the first interface 31, the switch 43 is used for switching the connection between the sensor 1 and the instrument control measurement loop device 2,
preferably, the knife switch terminal 3 can adopt UTME 4-P/P breaking test terminal, and the plug can adopt test plug MPS-MT.
In the embodiment, when the generator normally operates, the knife switch terminal 3 is switched on, the sensor 1 transmits monitored data to the instrument control measurement loop device 2, and when the generator performs an insulation test, the knife switch terminal 3 is disconnected, and a plug of the plug grounding cable 4 is inserted into the second interface 32 to be connected with the sensor 1 to be grounded, so that the sensor 1 is protected.
The generator sensor measuring system with the grounding protection device solves the problems of offline processing of clamping pieces or clamping piece damage and prefabricated cable damage in the process of connecting and disconnecting a prefabricated cable when a cabinet side signal is isolated in the original generator insulation test sensor signal loop isolation scheme; the grounding treatment of the sensor is added, so that the sensor is prevented from being damaged due to overvoltage; the conflict that the generator sensor channel can not be arranged for verification and other work during the generator insulation test is solved, and the overhaul period is shortened.
It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (7)
1. A generator sensor measurement system provided with a grounding protection device is characterized by comprising a sensor (1) arranged on a generator body, and an instrumentation control measurement loop device (2) used for receiving and processing data monitored by the sensor (1);
the grounding protection device comprises a disconnecting link terminal (3) which is used for connecting the sensor (1) and the instrument control measurement loop device (2); and a plug grounding cable (4) which is detachably mounted on the disconnecting link terminal (3) to be connected with the sensor (1) so as to ground the sensor (1) when the disconnecting link terminal (3) is in a disconnected state.
2. The generator sensor measurement system provided with the ground protection device according to claim 1, wherein the sensor (1) comprises a sensor body, a lead wire connected with the sensor body, and a pin arranged at the end part of the lead wire far away from the sensor body;
and a first interface (31) for detachably inserting the pins is arranged on the disconnecting link terminal (3).
3. The generator sensor measurement system with ground protection device of claim 2, wherein the pins comprise I + pin, I-pin, U + pin, U-pin.
4. Generator sensor measurement system with ground protection according to claim 3, wherein the plug ground cable (4) comprises a plug and a wire connected to the plug;
the disconnecting link terminal (3) is provided with a second interface (32) for the plug to be detachably inserted, and the second interface (32) is in conductive connection with the first interface (31).
5. The generator sensor measuring system with the ground protection device as claimed in claim 4, wherein the plug is a metal plug, and an insulating protective sleeve is sleeved on the periphery of the metal plug.
6. Generator sensor measurement system with earth protection according to claim 5, characterized in that said instrumentation measurement circuit means (2) comprise data connections;
a third interface (33) for the detachable plug-in mounting of the data connection is arranged on the disconnecting link terminal (3), and a disconnecting link (34) is arranged between the third interface (33) and the first interface (31);
the second interface (32) is arranged between the disconnecting link (34) and the first interface (31).
7. Generator sensor measurement system provided with a ground protection device according to claim 1, wherein the sensor (1) comprises a temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022111256.3U CN213517252U (en) | 2020-09-23 | 2020-09-23 | Generator sensor measuring system with grounding protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022111256.3U CN213517252U (en) | 2020-09-23 | 2020-09-23 | Generator sensor measuring system with grounding protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213517252U true CN213517252U (en) | 2021-06-22 |
Family
ID=76450649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022111256.3U Active CN213517252U (en) | 2020-09-23 | 2020-09-23 | Generator sensor measuring system with grounding protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213517252U (en) |
-
2020
- 2020-09-23 CN CN202022111256.3U patent/CN213517252U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207800816U (en) | Power battery module signal pickup assembly | |
| CN101488276B (en) | Wireless test system for cable | |
| CN103777120A (en) | Online automatic insulation voltage resistance testing system | |
| CN104608639A (en) | High-voltage electrical connector for pure electric vehicles | |
| US10663530B2 (en) | Test switch assembly having an electronic circuit | |
| CN213517252U (en) | Generator sensor measuring system with grounding protection device | |
| CN207780152U (en) | A kind of automotive wire bundle on-line checking mechanism | |
| WO2004102594B1 (en) | Method and testing equipment for checking the operation of a lightning arrester | |
| CN105758557B (en) | A kind of calibrating installation for isolation switch contact temperature monitoring apparatus | |
| CN201203938Y (en) | Cable wireless test system | |
| CN215219069U (en) | Experimental wiring instrument of portable medium voltage circuit breaker | |
| CN115327285A (en) | Power distribution cabinet delivery power performance inspection system | |
| CN212031607U (en) | Test device for accelerated life test | |
| CN108549044B (en) | Insulation line selection tester for direct current system of transformer substation | |
| CN111929477A (en) | Aviation plug's switching on-line measuring interface arrangement | |
| CN208580909U (en) | A kind of bus connector and electrical cabinet | |
| CN208156121U (en) | A kind of check device of engine wiring harness short circuit | |
| CN111537824A (en) | Intrusive heater performance test system | |
| CN218630029U (en) | Liquid cooling equipment alarming function detection device | |
| WO2020013826A1 (en) | Test switch assembly having an electronic circuit | |
| CN220381792U (en) | Auxiliary measuring device for core neutron measuring system selector | |
| CN218956740U (en) | Rudder feedback channel 1:1 amplifying circuit test switching device | |
| CN111474504B (en) | Connector female pin reed detection male pin and detection device comprising same | |
| CN220730253U (en) | Detection device | |
| CN217362061U (en) | Concentrated junction box for sensor cables |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |