Transformer transformation ratio tester

Abstract

The utility model discloses a transformer transformation ratio tester, and relates to the technical field of transformers, in particular to a transformer transformation ratio tester, which comprises a tester body, a tester rear cover and a dustproof net, a positioning block is mounted at the bottom of the tester body, and U-shaped plates are mounted on two side surfaces of the tester rear cover. The interior of the U-shaped plate is rotatably connected with a vertical plate through a shaft rod, one side surface of the vertical plate is provided with a buckle block, two side surfaces of the tester body are provided with cavity fixing blocks, and the interior of each cavity fixing block is provided with a limiting spring. The transformer transformation ratio tester has the effect of facilitating disassembly between the tester body and the tester rear cover, the positioning block plays a role in positioning and mounting, the limiting ball is arranged, so that the position of the buckle block is conveniently limited, rapid assembly between the tester body and the tester rear cover is facilitated, and the test efficiency is improved. On the contrary, the tester body and the tester rear cover can be conveniently and rapidly detached, and the purpose of improving practicability is achieved.

Description

A transformer turns ratio tester Technical Field

[0001] This utility model relates to the field of transformer technology, specifically a transformer turns ratio tester. Background Technology

[0002] Transformers are crucial electrical devices in power systems, primarily functioning to convert electrical energy between different voltage levels to meet the voltage requirements of various users and equipment. Increasing voltage enables long-distance power transmission and reduces energy loss during transmission; while decreasing voltage safely distributes electrical energy to individual user terminals. Accurate turns ratios are essential for the normal operation of transformers and the stable and reliable power supply of the power system. Transformer turns ratio testers are among the most critical pieces of equipment in power systems, used for testing three-phase transformers.

[0003] Existing transformer ratio testers are cumbersome to remove from their back cover, making it difficult to quickly disassemble and repair the tester. Furthermore, existing transformer ratio testers use dustproof nets for dust protection, but prolonged use of these nets reduces their ventilation and dust filtration efficiency, and they are also difficult to quickly remove and replace. The present invention provides a transformer ratio tester that solves the above problems. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a transformer turns ratio tester, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: A transformer turns ratio tester includes a tester body, a tester rear cover, and a dustproof net. A positioning block is installed at the bottom of the tester body. U-shaped plates are installed on both sides of the tester rear cover. A vertical plate is rotatably connected to the inside of the U-shaped plate via a shaft. A snap-fit ​​block is installed on one side of the vertical plate. Cavity fixing blocks are installed on both sides of the tester body. A limit spring is installed inside the cavity fixing block. A limit ball is installed at one end of the limit spring. A positioning slider is installed on the outer surface of the limit ball. A cavity block is installed on the inner bottom wall of the tester rear cover. A reset spring is installed inside the cavity block. A locking block is installed at one end of the reset spring. A push block is installed on the top of the locking block. A T-shaped slider is installed at the bottom of the locking block. A rectangular block is installed on the top of the dustproof net. A ventilation opening is provided inside the tester rear cover. A cooling fan is installed inside the tester body.

[0008] Optionally, the end of the vertical plate away from the U-shaped plate is located inside the cavity fixing block, and a semi-circular groove is provided at the bottom of the buckle block, with the end of the limiting ball away from the limiting spring inserted into the semi-circular groove.

[0009] Optionally, the cavity fixing block has a positioning groove with the vertical direction as the length direction, and the end of the positioning slider is located inside the positioning groove. The positioning slider can slide along the length direction of the positioning groove.

[0010] Optionally, the bottom of the tester body is provided with a positioning groove with the vertical direction as the depth direction, the end of the positioning block is inserted into the inside of the positioning groove, and the bottom of the tester body abuts against the top of the tester back cover.

[0011] Optionally, the bottom of the cavity block has a rectangular groove with the vertical direction as the depth direction. The end of the rectangular block away from the dustproof net is inserted into the interior of the rectangular groove. The rectangular block passes through the ventilation opening. One side of the rectangular block has a slot with the front-to-back direction as the depth direction. The end of the slot is inserted into the interior of the slot. The interior of the cavity block has a T-shaped sliding groove with the vertical direction as the depth direction and the front-to-back direction as the length direction. The end of the T-shaped slider is located inside the T-shaped sliding groove. The T-shaped slider can slide along the length direction of the T-shaped sliding groove.

[0012] Optionally, the dustproof net abuts against the bottom of the tester's back cover, and the length and width of the dustproof net are both greater than the length and width of the vent. The position of the cooling fan corresponds to the position of the vent.

[0013] This utility model provides a transformer turns ratio tester, which has the following beneficial effects:

[0014] 1. This transformer turns ratio tester, through the design of the tester's rear cover, dustproof mesh, positioning block, U-shaped plate, vertical plate, snap-fit ​​block, cavity fixing block, limit spring, limit ball, and positioning slider, facilitates the disassembly and reassembly of the tester body and the tester's rear cover. The positioning block serves to position the tester during installation, and the limit ball helps to limit the position of the snap-fit ​​block, facilitating quick assembly between the tester body and the tester's rear cover, and vice versa, thus improving its practicality.

[0015] 2. This transformer ratio tester, through the arrangement of a cavity block, a reset spring, a locking block, a push block, a T-shaped slider, and a rectangular block, enables the easy removal and replacement of the dustproof screen, improving the dustproof effect. The dustproof screen serves to prevent dust, while the cooling fan serves to dissipate heat. The cooperation of the locking block and the rectangular block facilitates the removal and replacement of the dustproof screen, thereby enhancing its practicality. Attached Figure Description

[0016] Figure 1 is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 is a schematic diagram of the structure of this utility model in frontal cross-section;

[0018] Figure 3 is an enlarged structural schematic diagram of point A in Figure 2 of this utility model;

[0019] Figure 4 is a schematic diagram of the structure of this utility model from a side cross-section.

[0020] Figure 5 is an enlarged structural schematic diagram of section B in Figure 4 of this utility model.

[0021] In the diagram: 1. Tester body; 2. Tester back cover; 3. Dustproof mesh; 4. Positioning block; 5. U-shaped plate; 6. Vertical plate; 7. Buckle block; 8. Cavity fixing block; 9. Limiting spring; 10. Limiting ball; 11. Positioning slider; 12. Cavity block; 13. Reset spring; 14. Locking block; 15. Push block; 16. T-shaped slider; 17. Rectangular block; 18. Cooling fan. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1

[0024] Please refer to Figures 1 to 5. This utility model provides the following technical solution: a transformer turns ratio tester, comprising a tester body 1, a tester rear cover 2, and a dustproof net 3. A positioning block 4 is installed at the bottom of the tester body 1. U-shaped plates 5 are installed on both sides of the tester rear cover 2. A vertical plate 6 is rotatably connected to the inside of the U-shaped plate 5 via a shaft. A buckle block 7 is installed on one side of the vertical plate 6. Cavity fixing blocks 8 are installed on both sides of the tester body 1. A limit spring 9 is installed inside the cavity fixing block 8. A limiting ball 10 is installed at one end of the tester 9. A positioning slider 11 is installed on the outer surface of the limiting ball 10. A cavity block 12 is installed on the inner bottom wall of the tester back cover 2. A reset spring 13 is installed inside the cavity block 12. A locking block 14 is installed at one end of the reset spring 13. A push block 15 is installed on the top of the locking block 14. A T-shaped slider 16 is installed on the bottom of the locking block 14. A rectangular block 17 is installed on the top of the dustproof net 3. A ventilation opening is provided inside the tester back cover 2. A cooling fan 18 is provided inside the tester body 1.

[0025] Specifically, the end of the limiting ball 10 is inserted into the interior of the semi-circular groove, which facilitates the restriction of the position of the buckle block 7 and the assembly and splicing of the tester body 1 and the tester back cover 2.

[0026] Please refer to Figures 1 to 3. The end of the vertical plate 6 away from the U-shaped plate 5 is located inside the cavity fixing block 8. The bottom of the buckle block 7 is provided with a semi-circular groove, and the end of the limiting ball 10 away from the limiting spring 9 is inserted into the interior of the semi-circular groove.

[0027] Specifically, the positioning slider 11 slides along the length of the positioning groove, which guides the limiting ball 10 and improves the stability of the movement of the limiting ball 10.

[0028] Please refer to Figures 2 and 3. The cavity fixing block 8 has a positioning groove with the vertical direction as the length direction. The end of the positioning slider 11 is located inside the positioning groove, and the positioning slider 11 can slide along the length direction of the positioning groove.

[0029] Specifically, the end of the positioning block 4 is inserted into the inside of the positioning groove, which serves to position the back cover 2 of the tester, facilitating the splicing and assembly between the tester body 1 and the back cover 2 of the tester.

[0030] Please refer to Figures 1 to 4. The bottom of the tester body 1 has a positioning groove with the vertical direction as the depth direction. The end of the positioning block 4 is inserted into the positioning groove. The bottom of the tester body 1 abuts against the top of the tester back cover 2.

[0031] Specifically, the end of the rectangular block 17 is inserted into the inside of the rectangular groove to facilitate the positioning and installation of the dustproof net 3. The end of the locking block 14 is inserted into the inside of the locking groove to facilitate the restriction of the position of the rectangular block 17. The T-shaped slider 16 slides along the length of the T-shaped groove to guide the locking block 14 and improve the stability of the movement of the locking block 14.

[0032] Please refer to Figures 4 and 5. The bottom of the cavity block 12 has a rectangular groove with the vertical direction as the depth direction. The end of the rectangular block 17 away from the dustproof net 3 is inserted into the interior of the rectangular groove. The rectangular block 17 passes through the ventilation opening. One side of the rectangular block 17 has a slot with the front-back direction as the depth direction. The end of the slot is inserted into the interior of the slot. The interior of the cavity block 12 has a T-shaped sliding groove with the vertical direction as the depth direction and the front-back direction as the length direction. The end of the T-shaped slider 16 is located inside the T-shaped sliding groove. The T-shaped slider 16 can slide along the length direction of the T-shaped sliding groove.

[0033] Specifically, the dustproof net 3 serves to prevent dust from entering the tester body 1, and the ventilation opening facilitates ventilation and heat dissipation.

[0034] Please refer to Figures 2 to 4. The dustproof net 3 abuts against the bottom of the back cover 2 of the tester. The length and width of the dustproof net 3 are both greater than the length and width of the vent. The position of the cooling fan 18 corresponds to the position of the vent.

[0035] In use, when the back cover 2 of the tester is removed, the vertical plate 6 is rotated, causing the buckle block 7 to rotate. When the buckle block 7 rotates, the edge of the semi-circular groove abuts against the limiting ball 10 and provides a vertical force to the limiting ball 10, causing the limiting ball 10 to move downward. This causes the limiting ball 10 to move the positioning slider 11 downward, causing the limiting spring 9 to contract under force. This causes the positioning slider 11 to slide along the length of the positioning groove, disengaging the limiting ball 10 from the semi-circular groove, and causing the vertical plate 6 to rotate away from the cavity fixing block. 8. Then move the back cover 2 of the tester to make the positioning block 4 leave the positioning groove, making it easier to inspect the inside of the tester body 1. Conversely, when the back cover 2 of the tester is closed, the positioning block 4 plays a positioning role, the vertical plate 6 rotates in the opposite direction, and the buckle block 7 is reset. Through the elastic tension of the limit spring 9, the end of the limit ball 10 is inserted into the semi-circular groove, which makes it easier to limit the position of the buckle block 7, facilitates the closing of the back cover 2 of the tester, and improves the stability of the closure. The cooling fan 18 works to exhaust the heat generated by the electrical components inside the tester body 1 through the ventilation port. The dustproof net 3 plays a dustproof role and reduces the amount of dust entering the inside of the tester body 1. When replacing the dustproof net 3, first remove the back cover 2 of the tester, then push the push block 15 to make the locking block 14 move the T-shaped slider 16, so that the reset spring 13 is compressed and the end of the locking block 14 leaves the slot, so that the T-shaped slider 16 slides along the length of the T-shaped groove, and then moves downwards. Dust net 3 is used to move rectangular block 17 away from rectangular groove, making it easy to remove dust net 3. Conversely, when installing dust net 3, move dust net 3 so that the end of rectangular block 17 is inserted into the inside of rectangular groove, so that dust net 3 abuts against the back cover 2 of the tester. At this time, the slot and the locking block 14 are aligned. Release push block 15, and through the elastic tension of return spring 13, the end of locking block 14 is inserted into the inside of slot, which makes it easy to restrict the position of rectangular block 17, facilitates the quick installation of dust net 3, and improves practicality.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A transformer turns ratio tester, comprising a tester body, a tester rear cover, and a dustproof mesh, characterized in that: The bottom of the tester body is equipped with a positioning block. U-shaped plates are installed on both sides of the tester's rear cover. A vertical plate is rotatably connected to the inside of the U-shaped plate via a shaft. A latching block is installed on one side of the vertical plate. Hollow fixing blocks are installed on both sides of the tester body. A limit spring is installed inside the hollow fixing block, with a limit ball at one end of the limit spring. A positioning slider is installed on the outer surface of the limit ball. A hollow block is installed on the inner bottom wall of the tester's rear cover, with a reset spring inside. A locking block is installed at one end of the reset spring, with a push block at the top of the locking block and a T-shaped slider at the bottom. A rectangular block is installed on the top of the dustproof mesh. Ventilation openings are provided inside the tester's rear cover, and a cooling fan is installed inside the tester body.

2. The transformer turns ratio tester according to claim 1, characterized in that: The end of the vertical plate away from the U-shaped plate is located inside the cavity fixing block. A semi-circular groove is provided at the bottom of the buckle block, and the end of the limiting ball away from the limiting spring is inserted into the semi-circular groove.

3. The transformer turns ratio tester according to claim 1, characterized in that: The cavity fixing block has a positioning groove with the vertical direction as the length direction. The end of the positioning slider is located inside the positioning groove, and the positioning slider can slide along the length direction of the positioning groove.

4. A transformer turns ratio tester according to claim 1, characterized in that: The bottom of the tester body has a positioning groove with the vertical direction as the depth direction. The end of the positioning block is inserted into the positioning groove, and the bottom of the tester body abuts against the top of the tester's back cover.

5. A transformer turns ratio tester according to claim 1, characterized in that: The bottom of the cavity block has a rectangular groove with the vertical direction as the depth direction. The end of the rectangular block away from the dustproof net is inserted into the interior of the rectangular groove. The rectangular block passes through the ventilation opening. One side of the rectangular block has a slot with the front-to-back direction as the depth direction. The end of the slot is inserted into the interior of the slot. The interior of the cavity block has a T-shaped sliding groove with the vertical direction as the depth direction and the front-to-back direction as the length direction. The end of the T-shaped slider is located inside the T-shaped sliding groove. The T-shaped slider can slide along the length direction of the T-shaped sliding groove.

6. A transformer turns ratio tester according to claim 1, characterized in that: The dustproof net abuts against the bottom of the back cover of the tester. The length and width of the dustproof net are both greater than the length and width of the ventilation opening. The position of the cooling fan corresponds to the position of the ventilation opening.

Images