Device and method for testing stroke of oil flow baffle of gas relay

Abstract

The invention discloses a gas relay oil flow baffle stroke testing device and method, and relates to the technical field of power transformation equipment monitoring, and the device comprises a gas relay module which is used for fixing a to-be-tested gas relay; the signal power supply is used for providing a working power supply for the gas relay; the mechanical driving module is used for adjusting the position of an oil flow baffle of the gas relay and feeding back displacement information; the measuring and recording module is used for measuring and recording data in the stroke testing process of the oil flow baffle of the gas relay; the gas relay module is connected with the measurement recording module, the measurement recording module is connected with the mechanical driving module, and the signal power supply is connected with the gas relay module, the mechanical driving module and the measurement recording module. The stroke of the oil flow baffle of the gas relay is accurately measured, the automation degree of the testing process is high, the testing efficiency and the accuracy of a testing result can be effectively improved, and errors and labor intensity caused by manual operation are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of substation equipment monitoring, in particular to a gas relay oil flow baffle stroke testing device and method. Background Art

[0002] As a protective device for important equipment such as transformers in power systems, the accurate and reliable performance of gas relays is crucial to ensure the safe and stable operation of power systems. At present, the performance test of gas relays is mainly focused on its action characteristics, sensitivity, sealing, etc., such as indication error test, indication hysteresis test, repeatability test and switching difference test, etc. These test items can reflect the working status of gas relays to a certain extent, but there is no special test item for the important parameter of the stroke of the oil flow baffle of the gas relay.

[0003] In recent years, with the development of technology, some patents on gas relay test devices have emerged. For example, the patent application with publication number CN 118914833 A is named "Detection pretreatment device for gas relay and operation detection system for gas relay". The core of the patent lies in the unique detection pretreatment device, including a base, a lifting mechanism, a docking mechanism and a switch mechanism, etc., which mainly focuses on improving the pretreatment efficiency of gas relay detection; the patent with publication number CN 222028301 U is named "A clamping and centering mechanism for gas relay test equipment", and the focus is on the design of the clamping and centering mechanism to achieve accurate docking and stable clamping of the gas relay during the test. However, none of these patents involve the test of the oil flow baffle stroke of the gas relay.

[0004] The stroke of the oil flow baffle of the gas relay is directly related to its response speed and accuracy to internal faults of the transformer. When a fault occurs inside the transformer and oil flow surges, the stroke of the oil flow baffle determines whether the gas relay can operate in a timely and accurate manner, thereby effectively protecting the transformer. Through accurate testing of the oil flow baffle stroke, the performance of the gas relay can be more comprehensively evaluated, potential problems can be discovered in a timely manner, and the reliability and safety of the power system can be improved. In addition, as the power system's requirements for equipment reliability continue to increase, the refined detection and maintenance of gas relays are becoming increasingly important. Therefore, conducting oil flow baffle stroke testing has important practical significance. Summary of the invention

[0005] The technical problem to be solved by the present invention is to solve the deficiencies existing in the prior art, design a gas relay oil flow baffle stroke test device and method, test the oil flow baffle stroke, fill the gap of no stroke test items in the existing gas relay performance test, and can comprehensively and accurately evaluate the performance of the gas relay, providing a more reliable guarantee for the safe and stable operation of the power system.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] In a first aspect, the present invention provides a gas relay oil flow baffle stroke test device, comprising:

[0008] Gas relay module, used to fix the gas relay to be tested;

[0009] Signal power supply, used to provide working power for gas relay;

[0010] A mechanical drive module, used to adjust the position of the oil flow baffle of the gas relay and feedback the displacement information;

[0011] The measurement and recording module measures and records the data during the oil flow damper stroke test of the gas relay;

[0012] The gas relay module is connected to the measurement and recording module, the measurement and recording module is connected to the mechanical drive module, and the signal power supply is connected to the gas relay module, the mechanical drive module and the measurement and recording module.

[0013] As a further technical solution of the present invention, the gas relay module comprises:

[0014] A gas relay base is provided with a fastening bracket above the gas relay base, and the gas relay is fixed on the fastening bracket by fastening bolts; and a wiring terminal is provided on one side of the gas relay base.

[0015] Furthermore, the base is a metal base.

[0016] As a further technical solution of the present invention, the mechanical driving module comprises:

[0017] A lead screw, used to resist and push the gas relay baffle;

[0018] The lead screw adjustment bracket is used to adjust the position of the lead screw;

[0019] A digital encoder is arranged on the lead screw and connected to the lead screw, and is used to measure the displacement information of the lead screw;

[0020] A laser decoder is arranged on the lead screw and connected to the lead screw, and is used to measure the optical path information of the lead screw at different positions;

[0021] An electric motor is used to power the movement of the lead screw.

[0022] Furthermore, the mechanical drive module also includes an insulating partition, and the insulating partition is arranged between the base and the screw adjustment bracket.

[0023] As a further technical solution of the present invention, the measurement recording module includes:

[0024] Reed contact state measurement and recording unit, used to monitor the state changes of the reed contacts of the gas relay and record the mutation signals and corresponding times;

[0025] An encoder output measurement and recording unit is used to record output data of an encoder connected to the lead screw;

[0026] Relay potential measurement and recording unit, used to measure the potential change of the gas relay housing and record the starting time and starting potential;

[0027] Laser optical path test and recording unit, used to measure and record the optical path information of the lead screw at different positions;

[0028] A motor control unit, used for controlling the motor;

[0029] The reed contact state measurement and recording unit is connected to the gas relay, the encoder output measurement and recording unit is connected to the encoder, the relay potential measurement and recording unit is connected to the wiring terminal; the laser optical path test recording unit is connected to the lead screw positioner; and the motor control unit is connected to the motor.

[0030] In a second aspect, the present invention also provides a gas relay oil flow baffle stroke test device method, comprising the following steps:

[0031] The mechanical drive unit adjusts the relative position of the lead screw and the oil flow baffle of the gas relay through the motor so that the lead screw contacts the oil flow baffle of the gas relay;

[0032] The measurement and recording unit measures and records the sudden change of the relay shell potential, and records the starting time, the encoder starting code, the lead screw starting distance, and the initial optical path information;

[0033] The mechanical drive unit controls the motor to continue pushing the lead screw until the reed contact of the gas relay is closed;

[0034] After the measurement and recording unit receives the sudden change signal of the reed node closing, the motor is powered off, and the measurement and recording end time, encoder end code, lead screw end distance, and optical path end distance are measured and recorded;

[0035] Calculate the stroke of the oil flow baffle of the gas relay according to the start and end time, encoder code, lead screw distance and optical path information recorded by the measurement and recording unit;

[0036] Determine whether the oil flow baffle has a bouncing defect based on the stroke of the oil flow baffle of the gas relay.

[0037] As a further technical solution of the present invention, the stroke of the oil flow baffle of the gas relay is calculated according to the start and end time, encoder code, lead screw distance and optical path information recorded by the measurement and recording unit, specifically:

[0038] The calculation formula for the stroke of the oil flow baffle of the gas relay is: = - ; = - ,in is the effective travel of the baffle, is the actual travel of the baffle, is the starting distance of the screw, is the screw end distance, is the initial information of the optical path, is the optical path termination distance.

[0039] As a further technical solution of the present invention, it is determined whether the oil flow baffle has a bounce defect according to the stroke of the oil flow baffle of the gas relay. Specifically, when the actual stroke and the effective stroke are greater than or equal to 2 mm, it is determined that the baffle has a bounce defect.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] 1. The present invention fills the gap of no stroke test items in the existing gas relay performance test, can comprehensively and accurately evaluate the performance of the gas relay, and provides a more reliable guarantee for the safe and stable operation of the power system.

[0042] 2. By accurately measuring the stroke of the oil flow baffle of the gas relay, problems that may occur during the use of the gas relay, such as baffle jamming, inaccurate displacement, etc., can be discovered in time, so that measures can be taken in advance for maintenance or replacement to reduce the risk of failure in the power system.

[0043] 3. The testing device of the present invention has a reasonable structure, is easy to operate, and has a high degree of automation in the testing process. It can effectively improve the testing efficiency and the accuracy of the test results, reduce the errors and labor intensity caused by manual operation, and has good practicality and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a structural diagram of the oil flow baffle stroke test device for a gas relay proposed by the present invention;

[0045] Figure 2 This is a schematic diagram of the structure of the gas relay module proposed by the present invention;

[0046] Figure 3A side view of the gas relay module provided by the present invention;

[0047] Figure 4 This is a schematic diagram of the structure of the mechanical drive module proposed by the present invention;

[0048] Figure 5 This is a schematic diagram of the structure of the measurement and recording module proposed by the present invention;

[0049] Figure 6 It is a wiring diagram of the oil flow baffle stroke test device of the gas relay proposed by the present invention;

[0050] Figure 7 It is the power supply wiring diagram of the oil flow baffle stroke test device of the gas relay proposed by the present invention;

[0051] Figure 8 A flow chart of a method for testing the oil flow baffle stroke of a gas relay proposed by the present invention;

[0052] As shown in the figure:

[0053] 10-gas relay module; 20-signal power supply, 30-mechanical drive module, 40-measurement and recording module;

[0054] 101-gas relay base, 102-fastening bracket, 103-fastening bolt, 104-gas relay; 105 wiring terminal;

[0055] 301-screw, 302-screw adjustment bracket, 303-digital encoder, 304-laser decoder, 305-motor;

[0056] 401-reed contact state measurement and recording unit, 402-encoder output measurement and recording unit, 403-relay potential measurement and recording unit, 404-laser optical path test and recording unit, 405-motor control unit. DETAILED DESCRIPTION

[0057] The specific implementation of the present invention is described below in conjunction with the accompanying drawings and embodiments:

[0058] It should be noted that the structures, colors, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0059] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0060] like Figure 1 As shown, the present invention provides a gas relay oil flow baffle stroke test device, comprising:

[0061] A gas relay module 10, used for fixing the gas relay to be tested;

[0062] A signal power supply 20, used to provide working power for the gas relay 201;

[0063] The mechanical drive module 30 is used to adjust the position of the oil flow baffle of the gas relay and feed back the displacement information;

[0064] The measurement and recording module 40 measures and records the data during the oil flow baffle stroke test of the gas relay;

[0065] The gas relay module is connected to the measurement and recording module, the measurement and recording module is connected to the mechanical drive module, and the signal power supply is connected to the gas relay module, the mechanical drive module and the measurement and recording module.

[0066] The signal power supply provides working power for the gas relay, keeping it in normal working state so that its various performance parameters can be accurately reflected during the test.

[0067] The connecting wires are used to connect the gas relay with the measurement and recording module and other related test equipment to achieve signal transmission and interaction.

[0068] In the embodiment of the present invention, the gas relay module is fastened to the base of the gas relay to be tested, which is used to fix the gas relay to be tested, so as to ensure that the gas relay maintains a stable position during the test and avoid the test results being affected by shaking and other factors. The gas relay module 10 includes: a gas relay base 101, a fastening bracket 102 is arranged above the gas relay base 101, and a gas relay 104 is fixed on the fastening bracket 102 by a fastening bolt 103; a wiring terminal 105 is arranged on one side of the gas relay base 101. The base is a metal base.

[0069] As a further technical solution of the present invention, the mechanical driving module 30 includes:

[0070] The lead screw 301 is used to resist and push the gas relay baffle;

[0071] The lead screw adjustment bracket 302 is used to adjust the position of the lead screw;

[0072] A digital encoder 303 is disposed on the lead screw and connected to the lead screw, and is used to measure displacement information of the lead screw;

[0073] The laser decoder 304 is disposed on the lead screw and connected to the lead screw, and is used to measure the optical path information of the lead screw at different positions;

[0074] The motor 305 is used to provide power for the movement of the lead screw.

[0075] The mechanical drive module in the embodiment of the present invention is mainly composed of a lead screw, a lead screw adjustment bracket, an encoder connected to the lead screw, and a motor. The lead screw adjustment bracket is used to adjust the position of the lead screw so that it can accurately contact the gas relay baffle; the encoder is connected to the lead screw and can provide real-time feedback on the displacement information of the lead screw; the motor provides power for the movement of the lead screw, pushing the lead screw to contact and push the baffle to move.

[0076] The mechanical drive module further includes an insulating partition 306, which is arranged between the base and the lead screw adjustment bracket.

[0077] As a further technical solution of the present invention, the measurement recording module 40 includes:

[0078] The reed contact state measurement and recording unit 401 is used to monitor the state change of the reed contact of the gas relay and record the mutation signal and the corresponding time;

[0079] An encoder output measurement and recording unit 402, used to record output data of an encoder connected to the lead screw;

[0080] The relay potential measurement and recording unit 403 is used to measure the potential change of the gas relay housing and record the starting time and starting potential;

[0081] The laser optical path test recording unit 404 is used to measure and record the optical path information of the lead screw at different positions;

[0082] A motor control unit 405, used to control the motor;

[0083] The reed contact state measurement and recording unit is connected to the gas relay, the encoder output measurement and recording unit is connected to the encoder, the relay potential measurement and recording unit is connected to the wiring terminal; the laser optical path test recording unit is connected to the lead screw positioner; and the motor control unit is connected to the motor.

[0084] In the embodiment of the present invention, the reed contact state measurement and recording unit is used to monitor the state change of the reed contact of the gas relay in real time. When the reed contact is closed, the sudden change signal and the corresponding time can be accurately recorded.

[0085] The encoder output measurement and recording unit is connected to the encoder in the mechanical drive module and is responsible for recording the output data of the encoder during the test process, thereby obtaining the displacement information of the lead screw.

[0086] The relay potential measurement and recording unit determines the contact moment between the lead screw and the baffle by measuring the potential change of the gas relay housing. When the lead screw contacts the baffle, the potential of the relay housing will change suddenly. The unit can accurately record relevant information such as the starting time and starting potential.

[0087] The laser optical path test and recording unit uses laser measurement technology to measure and record the optical path information of the lead screw at different positions, providing auxiliary data for the accurate calculation of the baffle stroke.

[0088] In an embodiment of the present invention, the reed contact state measurement and recording unit, the encoder output measurement and recording unit, the relay potential measurement and recording unit and the laser optical path test and recording unit in the measurement and recording module are independent of each other and work together to complete the measurement and recording of various data during the oil flow baffle stroke test of the gas relay.

[0089] In the embodiment of the present invention, the lead screw adjustment bracket in the mechanical drive module can accurately adjust the position of the lead screw in three-dimensional space to ensure accurate interference between the lead screw and the gas relay baffle.

[0090] See also Figure 5 The present invention also provides a method for testing the oil flow baffle stroke of a gas relay, comprising the following steps:

[0091] Step S1, the mechanical drive unit adjusts the relative position of the lead screw and the oil flow baffle of the gas relay through the motor so that the lead screw contacts the oil flow baffle of the gas relay;

[0092] Step S2, the measuring and recording unit measures and records the sudden change of the relay housing potential, and records the starting time, the encoder starting code, the lead screw starting distance, and the initial optical path information;

[0093] Step S3, the mechanical drive unit controls the motor to continue pushing the lead screw until the reed contact of the gas relay is closed;

[0094] Step S4, after the measurement and recording unit receives the sudden change signal of the reed node closing, the motor is powered off, and the measurement and recording end time, encoder end code, lead screw end distance, and optical path end distance are measured and recorded;

[0095] Step S5, calculating the stroke of the oil flow baffle of the gas relay according to the start and end times, encoder code, lead screw distance and optical path information recorded by the measurement and recording unit;

[0096] Step S6, judging whether the oil flow baffle has a bouncing defect according to the stroke of the oil flow baffle of the gas relay.

[0097] Before testing, the gas relay to be tested needs to be installed on the gas relay fastening base to ensure that it is firmly installed and accurately positioned; connect the signal power supply to the gas relay, and correctly connect the gas relay to each unit in the measurement and recording module and the motor, digital encoder, and laser decoder in the mechanical drive module through connecting leads;

[0098] The mechanical drive unit adjusts the relative position of the lead screw and the oil flow baffle of the gas relay through the motor so that the lead screw contacts the oil flow baffle of the gas relay;

[0099] Turn on the signal power supply and the measurement and recording module, start the motor, and the motor slowly pushes the lead screw to move toward the baffle. When the relay potential measurement and recording unit detects a sudden change in the relay housing potential, the starting time is recorded. , encoder start encoding , Screw starting distance And the initial information of the optical path ;

[0100] The mechanical drive unit controls the motor to continue pushing the lead screw until the reed contact of the gas relay is closed;

[0101] The motor continues to push the lead screw until the reed contact state measurement and recording unit receives a sudden change signal that the reed node is closed. At this time, the motor power supply is immediately cut off and the termination time is recorded. , encoder terminates encoding , Screw end distance And the optical path end distance ;

[0102] Calculate the stroke of the oil flow baffle of the gas relay according to the start and end time, encoder code, lead screw distance and optical path information recorded by the measurement and recording unit;

[0103] Analyze and evaluate the test results to determine whether the stroke of the oil flow baffle of the gas relay meets the standard requirements, that is, determine whether the oil flow baffle has a bounce defect based on the stroke of the oil flow baffle of the gas relay. If not, further inspection and adjustment of the gas relay is required until its performance meets the requirements.

[0104] In the embodiment of the present invention, the stroke of the oil flow baffle of the gas relay is calculated according to the start and end times, encoder code, lead screw distance and optical path information recorded by the measurement and recording unit, specifically:

[0105] The calculation formula for the stroke of the oil flow baffle of the gas relay is: = - ; = - ,in is the effective travel of the baffle, is the actual travel of the baffle, is the starting distance of the screw, is the screw end distance, is the initial information of the optical path, is the optical path termination distance. - is the equivalent displacement corresponding to the change in optical path, which can be accurately calculated according to the laser measurement principle and the geometric parameters of the device. In the embodiment of the present invention, the laser distance measuring probe is coaxial with the lead screw.

[0106] Among them, whether the oil flow baffle has a bounce defect is judged according to the stroke of the oil flow baffle of the gas relay. Specifically, when the actual stroke and the effective stroke are greater than or equal to 2mm, it is judged that the baffle has a bounce defect.

[0107] The present invention fills the gap of no stroke test items in the existing gas relay performance test, can comprehensively and accurately evaluate the performance of the gas relay, and provides a more reliable guarantee for the safe and stable operation of the power system.

[0108] By accurately measuring the stroke of the oil flow baffle of the gas relay, problems that may occur during the use of the gas relay, such as baffle sticking, inaccurate displacement, etc., can be discovered in time, so that measures can be taken in advance for repair or replacement, reducing the risk of failure in the power system.

[0109] The testing device of the present invention has a reasonable structure, is easy to operate, and has a high degree of automation in the testing process. It can effectively improve the testing efficiency and the accuracy of the test results, reduce the errors and labor intensity caused by manual operation, and has good practicality and promotion value.

[0110] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A gas relay oil flow baffle stroke test device, characterized in that: include: Gas relay module, used to fix the gas relay to be tested; Signal power supply, used to provide working power for gas relay; A mechanical drive module is used to adjust the position of the oil flow baffle of the gas relay and feedback the displacement information; The measurement and recording module measures and records the data during the oil flow damper stroke test of the gas relay; The gas relay module is connected to the measurement and recording module, the measurement and recording module is connected to the mechanical drive module, and the signal power supply is connected to the gas relay module, the mechanical drive module and the measurement and recording module.

2. The gas relay oil flow baffle stroke test device according to claim 1, characterized in that: The gas relay module comprises: a gas relay base, a fastening bracket is arranged above the gas relay base, and the gas relay is fixed on the fastening bracket by fastening bolts; and a wiring terminal is arranged on one side of the gas relay base.

3. The gas relay oil flow baffle stroke test device according to claim 1, characterized in that: The gas relay base is a metal base.

4. The gas relay oil flow baffle stroke test device according to claim 1, characterized in that: The mechanical drive module comprises: A lead screw, used to resist and push the gas relay baffle; The lead screw adjustment bracket is used to adjust the position of the lead screw; A digital encoder is arranged on the lead screw and connected to the lead screw, and is used to measure the displacement information of the lead screw; A laser decoder is arranged on the lead screw and connected to the lead screw, and is used to measure the optical path information of the lead screw at different positions; An electric motor is used to power the movement of the lead screw.

5. The gas relay oil flow baffle stroke test device according to claim 1, characterized in that: The mechanical drive module also includes an insulating partition, which is arranged between the base and the lead screw adjustment bracket.

6. The gas relay oil flow baffle stroke test device according to claim 1, characterized in that: The measurement recording module comprises: Reed contact state measurement and recording unit, used to monitor the state changes of the reed contacts of the gas relay and record the mutation signals and corresponding times; An encoder output measurement and recording unit is used to record output data of an encoder connected to the lead screw; Relay potential measurement and recording unit, used to measure the potential change of the gas relay housing and record the starting time and starting potential; Laser optical path test and recording unit, used to measure and record the optical path information of the lead screw at different positions; A motor control unit, used for controlling the motor; The reed contact state measurement and recording unit is connected to the gas relay, the encoder output measurement and recording unit is connected to the encoder, the relay potential measurement and recording unit is connected to the wiring terminal; the laser optical path test recording unit is connected to the lead screw positioner; and the motor control unit is connected to the motor.

7. A gas relay oil flow baffle stroke test device method, characterized in that: The gas relay oil flow baffle stroke test device as claimed in any one of claims 1 to 6 comprises the following steps: The mechanical drive unit adjusts the relative position of the lead screw and the oil flow baffle of the gas relay through the motor so that the lead screw contacts the oil flow baffle of the gas relay; The measurement and recording unit measures and records the sudden change of the relay shell potential, the starting time, the encoder starting code, the lead screw starting distance, and the initial optical path information; The mechanical drive unit controls the motor to continue pushing the lead screw until the reed contact of the gas relay is closed; After the measurement and recording unit receives the sudden change signal of the reed node closing, the motor is powered off, and the measurement and recording end time, encoder end code, lead screw end distance, and optical path end distance are measured and recorded; Calculate the stroke of the oil flow baffle of the gas relay according to the start and end time, encoder code, lead screw distance and optical path information recorded by the measurement and recording unit; Determine whether the oil flow baffle has a bouncing defect based on the stroke of the oil flow baffle of the gas relay.

8. The gas relay oil flow baffle stroke test device and method according to claim 7, characterized in that: The stroke of the oil flow baffle of the gas relay is calculated according to the start and end time, encoder code, lead screw distance and optical path information recorded by the measurement and recording unit, specifically: The calculation formula for the stroke of the oil flow baffle of the gas relay is: = - ; = - ,in is the effective travel of the baffle, is the actual travel of the baffle, is the starting distance of the screw, is the screw end distance, is the initial information of the optical path, is the optical path termination distance.

9. The gas relay oil flow baffle stroke test device and method according to claim 8, characterized in that: Whether the oil flow baffle has a bounce defect is determined based on the stroke of the oil flow baffle of the gas relay. Specifically, when the actual stroke and the effective stroke are greater than or equal to 2 mm, it is determined that the baffle has a bounce defect.

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