Wiring terminal board structure for high-voltage switch temperature rise test

Abstract

The utility model belongs to the technical field of test equipment, and discloses a wiring terminal board structure for a high-voltage switch temperature rise test, which comprises a test board, the periphery of the test board is connected with a shell of a high-voltage switch to be tested through a transition flange, and a plurality of pairs of wiring terminals are uniformly arranged on the central area of the test board at intervals. Each pair of binding posts penetrates through the test board, and corresponding thermocouple sensors are inserted into the two ends of each pair of binding posts respectively. Adaptation between the to-be-tested high-voltage switch and the test board is achieved by means of the transition flange, the transition flange of the corresponding size can be selected according to the model of the high-voltage switch, wiring terminal boards of different sizes do not need to be prepared in advance, the utilization rate of the wiring terminal boards is improved, and resource waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of testing devices, in particular to a wiring terminal board structure used for a temperature rise test of a high-voltage switch. Background Art

[0002] In order to ensure the quality of high-voltage switches, they need to undergo a temperature rise test before leaving the factory. The temperature rise test is a test to assess whether the heat (temperature rise) generated by the components of electrical products due to resistance loss meets certain requirements when the rated working current is passed through them. Usually, different positions of the high-voltage switch are selected as temperature measurement points, and the temperature values ​​of these dozens of temperature measurement points are collected at the same time.

[0003] Currently, the conductive rods on terminal blocks used for temperature rise tests are all made of copper, while thermocouples are composed of copper-constantan wire. This results in deviations in the accuracy of temperature transmission. The copper-constantan wire of the thermocouple needs to be manually wound onto the conductive rod, which is cumbersome and inefficient. The wire is prone to falling off or breaking during the test, making it impossible to transmit signals normally. In addition, terminal blocks of different sizes need to be redesigned for switch products with different interfaces, resulting in low device utilization and waste of resources. Utility Model Content

[0004] The utility model provides a terminal board structure for a temperature rise test of a high-voltage switch, solving the problems that the existing terminal boards are mostly adapted to thermocouples in a winding manner, which results in cumbersome operation and low working efficiency.

[0005] The utility model can be realized through the following technical solutions:

[0006] A terminal board structure for a temperature rise test of a high-voltage switch includes a test board, the periphery of which is connected to the housing of the high-voltage switch to be tested via a transition flange. Multiple pairs of terminal blocks are evenly spaced apart in the central area of ​​the test board, and each pair of terminal blocks passes through the test board, with corresponding thermocouple sensors installed at both ends.

[0007] Furthermore, all pairs of the binding posts are arranged in rows at equal intervals on the test board, and are marked with corresponding numbers in sequence on the test board.

[0008] Furthermore, each pair of the binding posts has an equal length exposed on the outside of the test board, and each pair includes two binding posts, which are made of copper and constantan respectively.

[0009] Furthermore, the test board is made of epoxy resin material, and is integrally formed with the terminal using a casting process.

[0010] Furthermore, the test plate adopts a circular structure, the side circumference of which is facing the high-voltage switch to be tested is connected to a pressure ring, and the side circumference of which is facing away from the high-voltage switch to be tested is connected to a transition flange.

[0011] The transition flange is an annular structure, and the terminal setting area in the test plate is completely exposed to the inner ring area of ​​the transition flange and the pressure ring.

[0012] Furthermore, the pressure ring is made of metal material.

[0013] The beneficial technical effects of the utility model are:

[0014] 1. The transition flange is used to adapt the high-voltage switch to be tested to the test board. The corresponding size of the transition flange can be selected according to the model of the high-voltage switch. There is no need to prepare terminal boards of different sizes in advance, which improves the utilization rate of the terminal boards and reduces resource waste.

[0015] 2. The plug-in method is used to adapt the thermocouple sensor and the terminal, which is easy to operate, can effectively improve work efficiency, facilitate the rapid implementation of temperature rise tests, and has better practicality;

[0016] 3. The terminals are arranged on the test board in rows with equal spacing, and each pair of terminals has a corresponding label on the test board, so that the terminal with problems can be quickly found, the troubleshooting speed is improved, and the success rate of the temperature rise test is increased.

[0017] 4. Adding a pressure ring to the test board can improve the overall strength of the terminal board, effectively enhance the test board's ability to resist the impact force from high-voltage switches such as GIS internal gas, and help extend the service life of the entire terminal board. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is an exploded schematic diagram of the overall structure of the utility model;

[0020] Among them, 1-test board, 2-transition flange, 3-terminal, 4-thermocouple sensor, 5-pressure ring. DETAILED DESCRIPTION

[0021] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings and preferred embodiments.

[0022] like Figure 1-2As shown, the utility model provides a terminal board structure for a temperature rise test of a high-voltage switch, comprising a test board 1, the periphery of which is connected to the housing of the high-voltage switch to be tested via a transition flange 2, and a plurality of pairs of terminals 3 are evenly spaced apart in the central area of ​​the test board 1, each pair of terminals 3 being arranged throughout the test board, with corresponding thermocouple sensors 4 respectively inserted at both ends. In this way, the adaptation between the high-voltage switch to be tested and the test board 1 is achieved with the help of the transition flange 2, and the corresponding size of the transition flange 2 can be selected according to the model of the high-voltage switch, eliminating the need to prepare terminal boards of different sizes in advance, thereby improving the utilization rate of the terminal boards and reducing resource waste. At the same time, the thermocouple sensor and the terminal are adapted by plug-in, which is easy to operate, can effectively improve work efficiency, facilitates the rapid implementation of temperature rise tests, and is more practical.

[0023] The details are as follows:

[0024] The test board 1 has a circular structure and can be made of epoxy resin. It and the terminal blocks 3 can be integrally formed using a casting process. During manufacturing, it is ensured that the length of each pair of terminal blocks 3 exposed on the outside of the test board 1 is equal, such as about 2 mm. Considering that the test board 1 needs to be assembled to the high-voltage switch to be tested with the help of a transition flange 2, which is mostly annular in structure, the terminal blocks 3 need to be concentrated in the circular area in the center of the test board and all exposed in the inner ring area of ​​the transition flange 2 to facilitate the insertion of the thermocouple sensor 4. At the same time, these terminal blocks 3 can be arranged in rows with equal spacing on the test board 1 and sequentially marked with corresponding labels on the test board 1. The spacing and number of rows can be comprehensively considered based on the number of test points and the plug size of the thermocouple sensor 4, so as not to interfere with the insertion of the thermocouple sensor 4. In addition, the corresponding terminal positions on the test board of the present invention can be marked with labels in sequence. In this way, based on the temperature rise test results, it is convenient to find the terminal with a problem, thereby improving the troubleshooting speed.

[0025] Since the two detection terminals of the thermocouple sensor 4 are mostly made of copper and constantan materials, each pair of binding posts of the utility model includes two binding posts 3, which are also made of copper and constantan materials respectively. This can effectively solve the problem that the detection data is erroneous due to the different materials of the existing binding posts and the detection terminals of the thermocouple sensor, affecting the test accuracy, and improve the stability and accuracy of signal transmission.

[0026] Finally, for the temperature rise test of high-voltage switches, such as GIS gas-insulated metal-enclosed switchgear, which is filled with gas inside, it may generate impact force on the test board after the temperature rises. Therefore, a pressure ring 5 is added to the side circumference of the test board facing the high-voltage switch to be tested, and the side circumference facing away from the high-voltage switch to be tested is connected to a transition flange 2. Of course, the inner ring area of ​​the pressure ring 5 cannot block the terminal area of ​​the test board 1, that is, the terminal area must be completely exposed to the inner ring area of ​​the pressure ring 5 to facilitate the insertion of the thermocouple sensor 4. In this way, with the help of the additional pressure ring, the pressure ring can be made of metal material, which can increase the strength of the test board to a certain extent, improve the test board's ability to resist the impact force from the internal gas of GIS, and help extend the service life of the entire terminal board.

[0027] When using the terminal board of the present invention to perform a temperature rise test, first determine the number of test points according to the test requirements of the high-voltage switch to be tested, select a transition flange 2 of corresponding size, and then assemble the transition flange 2 to the terminal board, ensuring that the terminal post 3 area is completely exposed to the inner ring area of ​​the transition flange 2, and then insert a corresponding number of thermocouple sensors 4 into the corresponding terminal posts 3 in sequence, and then connect the detection terminals of the thermocouple sensors on one side of the terminal board to the corresponding test points of the high-voltage switch, and then use bolts to assemble the terminal board equipped with the transition flange 2 to the housing of the high-voltage switch, and finally connect the detection terminals of the thermocouple sensors 4 on one side of the terminal board to the corresponding channels of the data acquisition instrument, turn on the power of the temperature rise test device, and you can start the temperature rise test.

[0028] Although specific embodiments of the present invention are described above, those skilled in the art should understand that these are merely examples and that various changes or modifications may be made to these embodiments without departing from the principles and essence of the present invention. Therefore, the scope of protection of the present invention is limited by the appended claims.

Claims

1. A terminal block structure for a high-voltage switch temperature rise test, characterized in that: It includes a test board, the circumference of which is connected to the shell of the high-voltage switch to be tested through a transition flange. Multiple pairs of binding posts are evenly spaced on the central area of ​​the test board. Each pair of binding posts passes through the test board, and corresponding thermocouple sensors are respectively inserted at both ends.

2. The terminal block structure for high-voltage switch temperature rise test according to claim 1, characterized in that: All pairs of the binding posts are arranged in rows at equal intervals on the test board, and corresponding labels are set on the test board in sequence.

3. The terminal block structure for high-voltage switch temperature rise test according to claim 2, characterized in that: The length of each pair of the binding posts exposed on the outside of the test board is equal, and each pair includes two binding posts, which are made of copper and constantan respectively.

4. The terminal block structure for high-voltage switch temperature rise test according to claim 1, characterized in that: The test board is made of epoxy resin material and is integrally formed with the terminal using a casting process.

5. The terminal block structure for high-voltage switch temperature rise test according to claim 1, characterized in that: The test plate adopts a circular structure, the side circumference of which is facing the high-voltage switch to be tested is connected to a pressure ring, and the side circumference of which is facing away from the high-voltage switch to be tested is connected to a transition flange. The transition flange is an annular structure, and the terminal setting area in the test plate is completely exposed to the inner ring area of ​​the transition flange and the pressure ring.

6. The terminal block structure for high-voltage switch temperature rise test according to claim 5, characterized in that: The pressure ring is made of metal material.

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