Dielectric strength tester for insulating oil

Abstract

The utility model discloses a dielectric strength tester for insulating oil, and relates to the field of dielectric strength testers, two high-voltage electrodes are fixedly installed in a tester main body, an oil cup structure is installed on the two high-voltage electrodes through two L-shaped connecting sleeves, two L-shaped limiting plates are symmetrically and fixedly installed on the tester main body and on the two sides of the oil cup structure, and the two L-shaped limiting plates are fixedly installed on the tester main body. The sealing upper cover is mounted on the oil cup structure, so that the sealing performance of the oil cup is effectively improved, external impurities are prevented from entering the oil cup, and the purity of a test environment and the accuracy of a test result are ensured; the L-shaped limiting plate is arranged on the tester main body, and the limiting piece and the fixing piece are arranged on the sealing upper cover, so that stable fixation of the oil cup structure is realized, shaking of the oil cup structure in the testing process and loosening of connection between the high-voltage electrode and the oil cup structure are avoided, the risk of scattering of insulating oil is reduced, stable proceeding of the testing process is guaranteed, and the testing efficiency is improved. And meanwhile, the cleaning burden can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of dielectric strength testers, and in particular to a dielectric strength tester for insulating oil. Background Technology

[0002] Insulating oil is widely used as an insulating and cooling medium in power equipment, and its dielectric strength is one of the key indicators for evaluating insulation performance. A dielectric strength tester is an important device for measuring the withstand voltage capability of insulating oil, and the accuracy of its test results directly affects the safe operation of power equipment.

[0003] Traditional insulating oil dielectric strength testers typically employ simple electrode structures and fixing methods, which suffer from the following problems: Unstable electrode connections; the connection between the high-voltage electrode and the oil cup structure in traditional testers is prone to loosening, leading to poor contact during testing and affecting the accuracy of the results. Insufficient sealing performance; the poor sealing of the oil cup structure may cause insulating oil leakage or the entry of external impurities, interfering with the testing process. Loose fixing of the oil cup; the oil cup is prone to shaking during testing, causing insulating oil to easily spill out, thus affecting the testing process and increasing the cleaning burden. Therefore, this application proposes an insulating oil dielectric strength tester to solve the above problems. Utility Model Content

[0004] The main purpose of this invention is to provide an insulating oil dielectric strength tester, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An insulating oil dielectric strength tester includes a tester body. Two high-voltage electrodes are fixedly installed inside the tester body. An oil cup structure is mounted on each of the two high-voltage electrodes via two L-shaped connecting sleeves. Two L-shaped limiting plates are symmetrically fixedly installed on both sides of the oil cup structure on the tester body. A sealing cover is installed on the oil cup structure. Four limiting components are symmetrically fixedly installed in pairs on the sealing cover. Each limiting component consists of a guide rod and an anti-detachment plate. The anti-detachment plate is fixedly installed at one end of the guide rod. A fixing component is movably installed on each adjacent limiting component. The fixing component is simultaneously installed on the L-shaped limiting plates. The fixing component consists of a base block, a spring, a connecting plate, and a locking block. The spring is fixedly installed at the inner end of the base block, the connecting plate is fixedly installed at the lower end of the base block, and the locking block is fixedly installed at the lower end of the connecting plate.

[0007] Preferably, the main body of the tester is equipped with a protective cover, the oil cup structure consists of an oil cup body and a flat plate electrode, there are two flat plate electrodes which are symmetrically fixedly installed on the oil cup body, and the L-shaped connecting sleeve is sleeved on the high voltage electrode and the flat plate electrode.

[0008] Preferably, the lower end of the sealing cover is provided with a sealing groove, and the sealing cover is fitted onto the upper part of the oil cup body through the sealing groove.

[0009] Preferably, the guide rod on the limiting member is fixedly installed at one end of the sealing cover.

[0010] Preferably, the base block of the fixing member has two symmetrical mounting holes, the base block is slidably mounted on the guide rod through the mounting holes, the locking block is locked in the L-shaped limiting plate, and the spring is located between the two mounting holes.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] By setting a sealing cover on the oil cup structure, the sealing performance of the oil cup is effectively improved, preventing external impurities from entering and ensuring the purity of the testing environment and the accuracy of the test results. By setting an L-shaped limiting plate on the main body of the tester and setting limiting and fixing parts on the sealing cover, the oil cup structure is stably fixed, avoiding shaking of the oil cup structure during the test and loosening of the connection between the high voltage electrode and the oil cup structure. This reduces the risk of insulating oil spillage, thereby ensuring the stable conduct of the test process and reducing the cleaning burden. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 For the present utility model Figure 1 A magnified view of point A;

[0015] Figure 3 This is a schematic diagram of the oil cup structure and the disassembled sealing cover of this utility model;

[0016] Figure 4 This is a schematic diagram showing the positional relationship between the sealing cover and the limiting component of this utility model.

[0017] Figure 5 This is a structural schematic diagram of the fastener of this utility model.

[0018] In the diagram: 1. Tester body; 2. High voltage electrode; 3. L-shaped connecting sleeve; 4. Oil cup structure; 5. L-shaped limiting plate; 6. Sealing cover; 7. Limiting component; 8. Fixing component; 9. Protective cover; 10. Oil cup body; 11. Flat electrode; 12. Sealing groove; 13. Guide rod; 14. Anti-detachment plate; 15. Base block; 16. Mounting hole; 17. Spring; 18. Connecting plate; 19. Locking block. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Please see Figures 1-5 As shown, the insulating oil dielectric strength tester includes a tester body 1. Two high-voltage electrodes 2 are fixedly installed inside the tester body 1. An oil cup structure 4 is installed on each of the two high-voltage electrodes 2 via two L-shaped connecting sleeves 3. Two L-shaped limiting plates 5 are symmetrically fixedly installed on both sides of the oil cup structure 4 on the tester body 1. A sealing cover 6 is installed on the oil cup structure 4. Four limiting components 7 are symmetrically fixedly installed on the sealing cover 6 in pairs. Each limiting component 7 consists of a guide rod 13 and an anti-detachment plate 14. The anti-detachment plate 14 is fixedly installed at one end of the guide rod 13. A fixing component 8 is movably installed on each adjacent limiting component 7. The fixing component 8 is also installed on the L-shaped limiting plate 5. The fixing component 8 is formed by a base block 1. 5. The tester consists of a spring 17, a connecting plate 18, and a locking block 19. The spring 17 is fixedly installed at the inner end of the base block 15, the connecting plate 18 is fixedly installed at the lower end of the base block 15, and the locking block 19 is fixedly installed at the lower end of the connecting plate 18. A protective cover 9 is installed on the main body 1 of the tester. The oil cup structure 4 consists of an oil cup body 10 and a flat electrode 11. There are two flat electrodes 11, which are symmetrically fixedly installed on the oil cup body 10. An L-shaped connecting sleeve 3 is fitted onto the high-voltage electrode 2 and the flat electrode 11. When using the tester, first place the main body 1 of the tester on a stable workbench and ensure that the high-voltage electrode 2 is correctly connected to the power supply. Then, inject the insulating oil to be tested into the oil cup body 10 of the oil cup structure 4. Note that the oil... The amount should not exceed the specified scale; then, the sealing cover 6 is fitted onto the upper part of the oil cup body 10 through the sealing groove 12 to ensure a tight seal; next, pinch the two base blocks 15 on the two fixing parts 8 with your fingers, thereby pushing the connecting plate 18 and the locking block 19 towards the sealing cover 6 through the base blocks 15. At this time, the base blocks 15 will compress the spring 17. Then, connect the two flat electrodes 11 of the oil cup structure 4 to the high voltage electrode 2 through the L-shaped connecting sleeve 3, so that the L-shaped connecting sleeve 3 is respectively fitted onto the high voltage electrode 2 and the flat electrode 11, and at the same time, the flat electrode 11 rests on the upper end of the high voltage electrode 2; finally, loosen the base blocks 15 on the fixing parts 8. At this time, under the elastic force of the spring 17, the base blocks 18 and 19 will be released. 5. The connecting plate 18 and the locking block 19 move toward the L-shaped limiting plate 5, so that the locking block 19 is finally locked into the L-shaped limiting plate 5; then check whether the oil cup structure 4 is stable and without shaking, and after confirming that it is correct, cover it with the protective cover 9; then turn on the power of the tester, set the test parameters according to the operation manual, and start the test program; after the test is completed, first turn off the power, then open the protective cover 9, then press the base block 15 of the fixing part 8 to make the locking block 19 disengage from the L-shaped limiting plate 5, finally take out the oil cup structure 4, then remove the sealing cover 6, finally pour out the insulating oil and clean the oil cup body 10 for the next use. Safety should be paid attention to throughout the process, avoid contact with the high voltage electrode 2, and ensure that the test environment is dry and free of impurities.

[0021] Specifically, the lower end of the sealing cover 6 has a sealing groove 12. The sealing cover 6 is fitted onto the upper part of the oil cup body 10 through the sealing groove 12. The guide rod 13 on the limiting member 7 is fixedly installed on one end of the sealing cover 6. Two mounting holes 16 are symmetrically opened on the base block 15 on the fixing member 8. The base block 15 is slidably installed on the guide rod 13 through the mounting holes 16. The locking block 19 is locked in the L-shaped limiting plate 5. The spring 17 is located between the two mounting holes 16. The sealing groove 12 of the sealing cover 6 is designed as an annular groove structure. Its inner diameter matches the outer diameter of the upper part of the oil cup body 10. During installation, the sealing groove 12 is directly fitted onto the upper edge of the oil cup body 10. A physical seal is formed by tight fit to prevent leakage of insulating oil or entry of external impurities. This fit method uses the elastic deformation of the sealing groove 12 to enhance the contact pressure, ensuring that the oil cup maintains a stable sealing state during the test, while also facilitating disassembly and cleaning.

[0022] Finally, by setting a sealing cover 6 on the oil cup structure 4, the sealing performance of the oil cup is effectively improved, preventing external impurities from entering and ensuring the purity of the test environment and the accuracy of the test results. By setting an L-shaped limiting plate 5 on the main body 1 of the tester and setting a limiting component 7 and a fixing component 8 on the sealing cover 6, the oil cup structure 4 is stably fixed, avoiding shaking of the oil cup structure 4 during the test and loosening of the connection between the high voltage electrode 2 and the oil cup structure 4, thereby reducing the risk of insulating oil spillage, ensuring the stable conduct of the test process, and also reducing the cleaning burden.

[0023] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An insulating oil dielectric strength tester, comprising a tester body (1), wherein two high-voltage electrodes (2) are fixedly installed inside the tester body (1), and an oil cup structure (4) is installed on the two high-voltage electrodes (2) through two L-shaped connecting sleeves (3), characterized in that: Two L-shaped limiting plates (5) are symmetrically fixedly installed on the main body (1) of the tester and on both sides of the oil cup structure (4). A sealing cover (6) is installed on the oil cup structure (4). Four limiting parts (7) are symmetrically fixedly installed on the sealing cover (6). Each limiting part (7) consists of a guide rod (13) and an anti-detachment plate (14). The anti-detachment plate (14) is fixedly installed on one end of the guide rod (13). A fixing part (8) is movably installed on each of the two adjacent limiting parts (7). The fixing part (8) is simultaneously installed on the L-shaped limiting plate (5). The fixing part (8) consists of a base block (15), a spring (17), a connecting plate (18), and a locking block (19). The spring (17) is fixedly installed on the inner end of the base block (15). The connecting plate (18) is fixedly installed on the lower end of the base block (15). The locking block (19) is fixedly installed on the lower end of the connecting plate (18).

2. The insulating oil dielectric strength tester according to claim 1, characterized in that: The tester body (1) is equipped with a protective cover (9). The oil cup structure (4) consists of an oil cup body (10) and a flat plate electrode (11). There are two flat plate electrodes (11) that are symmetrically fixed on the oil cup body (10). The L-shaped connecting sleeve (3) is fitted on the high voltage electrode (2) and the flat plate electrode (11).

3. The insulating oil dielectric strength tester according to claim 2, characterized in that: The lower end of the sealing cover (6) is provided with a sealing groove (12), and the sealing cover (6) is fitted onto the upper part of the oil cup body (10) through the sealing groove (12).

4. The insulating oil dielectric strength tester according to claim 3, characterized in that: The guide rod (13) on the limiting member (7) is fixedly installed at one end of the sealing cover (6).

5. The insulating oil dielectric strength tester according to claim 4, characterized in that: The base block (15) on the fixing member (8) has two symmetrical mounting holes (16). The base block (15) is slidably mounted on the guide rod (13) through the mounting holes (16). The locking block (19) is locked in the L-shaped limiting plate (5). The spring (17) is located between the two mounting holes (16).

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