A transformer for protecting an instrument circuit under test

Abstract

The utility model relates to transformer technical field, and disclose a kind of transformer for protecting instrument circuit test, including base, the top of base is provided with transformer body, the one end of transformer body is fixed with wiring end, the one end of transformer body is fixed with grounding end, the both sides of transformer body are fixed with connecting block, the both sides of base top are fixed with mounting shell, the inside of mounting shell is provided with support block, the top of support block is fixed with connecting rod.The transformer for protecting instrument circuit test, through above process, the installation and the process of removing fixed of transformer body are more convenient, greatly save operating time, improve the maintenance efficiency of transformer body of staff, further reduce the workload of staff, and can limit transformer body, to avoid the wobble of transformer body, guarantee the stable use of transformer body.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to a transformer used for testing the circuit of a protection instrument. Background Technology

[0002] A transformer is an electrical device mainly used to convert voltage and current and achieve electrical isolation. In instrument circuit testing, dry-type transformers, as key voltage and current conversion and protection devices, are widely used in power system testing, industrial equipment insulation performance testing and other scenarios, becoming an indispensable part of the testing system.

[0003] Regarding existing related technologies, the inventors believe that the following defects often exist: the connection between the dry-type transformer and the base of the existing protection instrument circuit test transformer is usually quite complicated, requiring a lot of time and effort to install and disassemble. This not only reduces work efficiency but also increases the workload of the staff, and can easily cause the transformer to shake or shift during the test, affecting the stability and safety of the test. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing technology has the disadvantages of dry-type transformers used for testing the circuit of protective instruments. The dry-type transformer is complicated to connect with the base, and the installation and disassembly are time-consuming and laborious. It is also easy to shake and shift, which affects the stability and safety of the test. Therefore, we propose a transformer for testing the circuit of protective instruments.

[0005] To achieve the above objectives, this application adopts the following technical solution: a transformer for testing the circuit of a protective instrument, comprising a base, a transformer body disposed on the top of the base, a terminal block fixed at one end of the transformer body, a grounding terminal fixed at one end of the transformer body, connecting blocks fixed on both sides of the transformer body, mounting shells fixed on both sides of the top of the base, a support block disposed inside the mounting shell, a connecting rod fixed on the top of the support block, a circular plate fixed on the top of the connecting rod, a sliding plate fixed on one side of the support block, a vertical rod fixed on one side of the sliding plate, a connecting groove for cooperating with the vertical rod being opened inside the connecting block, a pull plate slidably connected to the surface of the connecting rod, fixing posts fixed at both ends of the pull plate, and two fixing holes for cooperating with the fixing posts being opened on both sides of the top of the mounting shell.

[0006] Preferably, a first spring is slidably connected to the surface of the connecting rod, one end of the first spring is fixed to the circular plate, and the other end of the first spring is fixed to the pull plate.

[0007] Preferably, limit blocks are fixed on both sides inside the mounting shell, and limit grooves that cooperate with the limit blocks are opened at both ends of the sliding plate.

[0008] Preferably, two second springs are fixed on one side of the sliding plate, the second springs are located on both sides of the vertical rod, and the other end of the second springs is fixed to the mounting shell.

[0009] Preferably, the top of the base is provided with a groove, and a third spring is fixed to each of the four corners inside the groove, and an abutment plate is fixed to the other end of the third spring.

[0010] Preferably, the base is provided with casters at all four corners and adjustable feet at both ends.

[0011] Preferably, a push rod is fixed to one end of the base, and an anti-slip pad is fitted on the surface of the push rod.

[0012] The technical effects and advantages of this utility model are as follows: In this utility model, the above process makes the installation and removal of the transformer body more convenient, greatly saving operation time, improving the maintenance efficiency of the transformer body, further reducing the workload of the staff, and limiting the transformer body to prevent the transformer body from shaking and ensure the stable use of the transformer body.

[0013] In this invention, by setting a groove, a third spring and abutment plate, the transformer body can play a good supporting and buffering role when placed on the base, effectively reducing the shaking of the transformer body caused by vibration during operation, and further ensuring the stable operation of the transformer body. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the transformer body structure of this utility model; Figure 3 This is a schematic diagram of the internal cross-sectional structure of the mounting shell of this utility model; Figure 4 This is a schematic diagram of the disassembled structure of the base and the abutment plate of this utility model.

[0015] Legend: 1. Base; 2. Transformer body; 3. Terminal; 4. Grounding terminal; 5. Connecting block; 6. Mounting shell; 8. Support block; 9. Connecting rod; 10. Circular plate; 11. Sliding plate; 12. Vertical rod; 13. Connecting groove; 14. Pull plate; 15. Fixing column; 16. Fixing hole; 17. First spring; 18. Limiting block; 19. Limiting groove; 20. Second spring; 21. Groove; 22. Third spring; 23. Abutment plate; 24. Caster wheel; 25. Adjustable feet; 26. Push rod; 27. Anti-slip pad. Detailed Implementation

[0016] Based on the technical solution of this utility model, without changing the essential spirit of this utility model, those skilled in the art can propose various interchangeable structural methods and implementation methods. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model, and should not be regarded as the entirety of this utility model or as a limitation or restriction of the technical solution of this utility model.

[0017] Reference Figures 1-4 As shown, this utility model provides a technical solution: a transformer for testing the circuit of a protective instrument, including a base 1, a transformer body 2 on the top of the base 1, a terminal 3 fixed to one end of the transformer body 2, a grounding terminal 4 fixed to one end of the transformer body 2, connecting blocks 5 fixed to both sides of the transformer body 2, mounting shells 6 fixed to both sides of the top of the base 1, a support block 8 inside the mounting shell 6, a connecting rod 9 fixed to the top of the support block 8, a circular plate 10 fixed to the top of the connecting rod 9, a sliding plate 11 fixed to one side of the support block 8, a vertical rod 12 fixed to one side of the sliding plate 11, and a connecting groove for cooperating with the vertical rod 12 inside the connecting block 5. 13. A pull plate 14 is slidably connected to the surface of the connecting rod 9. A fixing post 15 is fixed at both ends of the pull plate 14. Two fixing holes 16 are opened on both sides of the top of the mounting shell 6 to cooperate with the fixing post 15. A first spring 17 is slidably connected to the surface of the connecting rod 9. One end of the first spring 17 is fixed to the circular plate 10, and the other end of the first spring 17 is fixed to the pull plate 14. Limit blocks 18 are fixed on both sides inside the mounting shell 6. Limit grooves 19 that cooperate with the limit blocks 18 are opened at both ends of the sliding plate 11. Two second springs 20 are fixed on one side of the sliding plate 11. The second springs 20 are located on both sides of the vertical rod 12, and the other end of the second springs 20 is fixed to the mounting shell 6. Specifically: By placing the transformer body 2 on the base 1, pulling the pull plate 14 outwards causes the fixing column 15 to move away from the fixing hole 16. Pulling the connecting rod 9 moves the support block 8, and the connecting rod 9 pushes the sliding plate 11 towards the connecting block 5. At this time, the second spring 20 compresses the structure of the limiting block 18 and the limiting groove 19, effectively constraining the movement path of the sliding plate 11 and preventing deviation. This allows it to push the vertical rod 12 smoothly into the connecting groove 13, thus achieving rapid installation of the transformer body 2. When the transformer body 2 needs to be inspected and maintained regularly, simply pull the pull plate 14 outwards, and with the tension of the first spring 17, quickly move the fixing column 15 away. Inside the fixing hole 16, the connecting rod 9 is pulled to move the support block 8. The support block 8 pulls the sliding plate 11 away from the connecting block 5. At the same time, with the rebound force of the second spring 20, the sliding plate 11 smoothly pulls the vertical rod 12 away from the inside of the connecting groove 13, thereby disconnecting the connection between the base 1 and the transformer body 2. Through the above process, the installation and removal of the transformer body 2 are more convenient, greatly saving operation time, improving the maintenance efficiency of the transformer body 2, further reducing the workload of the staff, and limiting the transformer body 2 to prevent the transformer body 2 from shaking and ensure the stable use of the transformer body 2.

[0018] Reference Figure 1 and Figure 4 As shown in this embodiment: a groove 21 is provided on the top of the base 1, and a third spring 22 is fixed at each of the four corners inside the groove 21. An abutment plate 23 is fixed at the other end of the third spring 22; universal wheels 24 are provided at each of the four corners of the bottom of the base 1, and adjustable feet 25 are provided at both ends of the bottom of the base 1; a push rod 26 is fixed at one end of the base 1, and an anti-slip pad 27 is provided on the surface of the push rod 26. Specifically: By setting the structure of groove 21, third spring 22 and abutment plate 23, when the transformer body 2 is placed on the base 1, it can play a good supporting and buffering role, effectively reducing the shaking of the transformer body 2 caused by vibration during operation, and further ensuring the stable operation of the transformer body 2. By setting the structure of casters 24 and adjustable feet 25, the casters 24 make the whole easy to move and can be flexibly adjusted according to actual use needs, while the adjustable feet 25 can provide stable support after the device is placed in a specific position to prevent it from sliding or shifting. In addition, by setting the structure of push rod 26 and anti-slip pad 27, it is convenient for staff to carry and operate the transformer body 2. The anti-slip properties of the anti-slip pad 27 can increase the friction between the staff's hands and push rod 26, reduce the risk of slipping during the carrying process, and ensure operational safety.

[0019] Working principle: The user places the transformer body 2 on the base 1, then pulls the pull plate 14 outward to move the fixing column 15 away from the fixing hole 16. Pulling the connecting rod 9 moves the support block 8, and the connecting rod 9 pushes the sliding plate 11 towards the connecting block 5. At this time, the second spring 20 compresses the structure of the limiting block 18 and the limiting groove 19, effectively constraining the movement path of the sliding plate 11 and preventing deviation. This allows it to push the vertical rod 12 smoothly into the connecting groove 13, thus achieving rapid installation of the transformer body 2. When the transformer body 2 needs to be inspected and maintained regularly, simply pull the pull plate 14 outward, and with the tension of the first spring 17, quickly move the fixing column 15. After leaving the interior of the fixing hole 16, the connecting rod 9 is pulled to move the support block 8. The support block 8 pulls the sliding plate 11 away from the connecting block 5. At the same time, with the rebound force of the second spring 20, the sliding plate 11 smoothly pulls the vertical rod 12 away from the interior of the connecting groove 13, thereby disconnecting the connection between the base 1 and the transformer body 2. Through the above process, the installation and removal of the transformer body 2 are extremely convenient, greatly saving operation time, improving the maintenance efficiency of the transformer body 2, further reducing the workload of the staff, and limiting the transformer body 2 to prevent the transformer body 2 from shaking and ensure the stable use of the transformer body 2.

[0020] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A transformer for testing the circuit of a protective instrument, comprising a base (1), characterized in that: The base (1) is provided with a transformer body (2) on the top. A terminal (3) is fixed at one end of the transformer body (2). A grounding terminal (4) is fixed at one end of the transformer body (2). A connecting block (5) is fixed on both sides of the transformer body (2). A mounting shell (6) is fixed on both sides of the top of the base (1). A support block (8) is provided inside the mounting shell (6). A connecting rod (9) is fixed on the top of the support block (8). A circular plate (10) is fixed on the top of the connecting rod (9). A sliding plate (11) is fixed on one side of the support block (8). A vertical rod (12) is fixed on one side of the sliding plate (11). A connecting groove (13) is provided inside the connecting block (5) to cooperate with the vertical rod (12). A pull plate (14) is slidably connected to the surface of the connecting rod (9). A fixing post (15) is fixed at both ends of the pull plate (14). Two fixing holes (16) are provided on both sides of the top of the mounting shell (6) to cooperate with the fixing post (15).

2. The transformer for testing the circuit of a protection instrument according to claim 1, characterized in that: The surface of the connecting rod (9) is slidably connected to a first spring (17), one end of the first spring (17) is fixed to the circular plate (10), and the other end of the first spring (17) is fixed to the pull plate (14).

3. The transformer for testing the circuit of a protection instrument according to claim 1, characterized in that: Limiting blocks (18) are fixed on both sides inside the mounting shell (6), and limiting grooves (19) that cooperate with the limiting blocks (18) are provided at both ends of the sliding plate (11).

4. The transformer for testing the circuit of a protection instrument according to claim 1, characterized in that: Two second springs (20) are fixed on one side of the sliding plate (11). The second springs (20) are located on both sides of the vertical rod (12), and the other end of the second springs (20) is fixed to the mounting shell (6).

5. A transformer for testing the circuit of a protection instrument according to claim 1, characterized in that: The base (1) has a groove (21) on its top. A third spring (22) is fixed at each of the four corners inside the groove (21). A stop plate (23) is fixed at the other end of the third spring (22).

6. A transformer for testing the circuit of a protection instrument according to claim 1, characterized in that: The base (1) is equipped with casters (24) at all four corners of its bottom and adjustable feet (25) at both ends of its bottom.

7. A transformer for testing the circuit of a protective instrument according to claim 1, characterized in that: A push rod (26) is fixed to one end of the base (1), and an anti-slip pad (27) is fitted on the surface of the push rod (26).

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