Withstand voltage testing device for transformer

Abstract

The utility model relates to the technical field of testing devices, and discloses a transformer withstand voltage testing device which comprises a testing machine frame, an adjusting mechanism is arranged on the testing machine frame, transformers of different specifications are pressed and fixed to a certain degree and pins are prevented from being deviated and bent through the adjusting mechanism, an auxiliary mechanism is arranged on the adjusting mechanism, and the auxiliary mechanism is connected with the testing machine frame. An auxiliary mechanism is arranged to close and fix the testing device to prevent the testing device from loosening and falling off when the testing device is transported and carried, the adjusting mechanism comprises a placing groove, the placing groove is formed in the inner wall of the bottom of the testing rack, and limiting grooves are formed in the outer walls of the two sides of the testing rack. According to the utility model, the positioning plate, the sliding plate and other structures are arranged, so that the problem that the existing withstand voltage tester body is easily damaged by external force during transportation and carrying due to the fact that most of the tester bodies are exposed outside, and the problem that a probe or a test pin of a transformer deflects and deforms during testing to affect a test result is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing devices, in particular to a transformer withstand voltage testing device. Background Art

[0002] The withstand voltage tester can be called an electrical insulation strength tester, a dielectric strength tester, etc. according to its function. Its working principle is: a voltage higher than the normal working voltage is applied to the insulator of the device under test for a specified period of time. The voltage applied thereto will only generate a very small leakage current, and the insulation is good. The test system consists of three modules: a programmable power supply module, a signal acquisition and conditioning module, and a computer control system. Two indicators of the withstand voltage tester are selected: the maximum output voltage value and the maximum alarm current value.

[0003] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. It is mainly composed of a coil, an iron core, and pins. During the production process of the transformer, conducting a withstand voltage test is an important means to ensure the quality of the finished transformer. The withstand voltage test mainly tests the insulation strength of the transformer by applying high voltage electricity. If the insulation does not break down or the leakage current does not exceed a certain value, it is qualified.

[0004] The above device has the following defects: the body of the withstand voltage tester is mostly exposed to the outside, which makes the existing withstand voltage tester body easily damaged by external forces during transportation and carrying, thereby causing the probe or the test pin of the transformer to be skewed and deformed during the test, affecting the test results. Therefore, a transformer withstand voltage test device is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a transformer withstand voltage test device, which aims to improve the problem in the prior art that the withstand voltage tester body is easily damaged by external forces during transportation and carrying, thereby causing the probe or the transformer test pin to be skewed and deformed during testing.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a transformer withstand voltage test device, including a test frame, an adjustment mechanism is provided on the test frame, and the adjustment mechanism is used to press and fix transformers of different specifications to a certain extent and prevent the pins from being offset and bent. The adjustment mechanism is provided with an auxiliary mechanism, and the auxiliary mechanism is used to close and fix the test device during transportation and carrying to prevent it from loosening and falling off. The adjustment mechanism includes a placement slot, which is provided on the bottom inner wall of the test frame, and limiting slots are provided on both side outer walls of the test frame. The side inner wall of the test frame is slidably connected to a positioning plate, and the two side inner walls of the limiting slot are slidably connected to a sliding plate, and the top outer wall of the sliding plate is fixedly connected to a sealing plate, and the top inner wall of the positioning plate is provided with an anti-deflection hole, and the bottom outer wall of the sealing plate is fixedly connected to the pin body.

[0007] As a further description of the above technical solution: the auxiliary mechanism includes a groove, which is opened on the inner wall of the side of the sliding plate, a paddle is slidably connected to the inner wall of one side of the groove, an arc block is fixedly connected to the outer wall of one side of the paddle, and a small spring is fixedly connected to the outer wall of the side of the paddle away from the arc block.

[0008] As a further description of the above technical solution: the length and width of the positioning plate are adapted to the inner diameter of the test rack, and anti-slip grooves are provided on both side outer walls of the test rack.

[0009] As a further description of the above technical solution: the pin body is slidably connected to the side inner wall of the anti-deflection hole, and the side inner wall of the anti-deflection hole is fixedly connected with an insulating pad.

[0010] As a further description of the above technical solution: a handle is fixedly connected to the top outer wall of the sealing plate, and one end of the pressure measuring circuit principle test data machine is fixedly connected to the top outer wall of the sealing plate.

[0011] As a further description of the above technical solution: the arc block passes through the inner wall of one side of the sliding plate and extends to the outer side wall of the sliding plate, and the arc block is clamped on the inner wall of one side of the limiting groove.

[0012] As a further description of the above technical solution: one end of the small spring away from the paddle is fixedly connected to an inner wall of one side of the sliding plate, and both outer walls of the paddle are fixedly connected with abrasive pads.

[0013] As a further description of the above technical solution: a test data machine is fixedly connected to an outer wall of one side of the test rack, and a pressure measuring circuit is fixedly connected to an outer wall of the top of the test data machine.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, by providing a positioning plate, a sliding plate, an anti-deflection hole and other structures, the pins are bent to a certain extent to prevent deflection when the transformer is pressed during transportation and testing, thereby improving the problem that most of the tester body is exposed to the outside, making the existing withstand voltage tester body easily damaged by external forces during transportation and carrying, thereby causing the probe or the transformer test pin to be skewed and deformed during testing, affecting the test results.

[0016] 2. In the present invention, grooves, paddles, arc-shaped blocks and other foot bones are provided to perform simple clip-on sealing and separation of the overall side-view device during transportation, thereby improving the problem of loosening and falling of the internal pins due to bumps during carrying and transportation, causing internal bending and damage, and internal erosion by external dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall main view of a transformer withstand voltage test device proposed by the present invention;

[0018] Figure 2 This is a schematic side view of the overall structure of a transformer withstand voltage test device proposed by the present invention;

[0019] Figure 3 This is a schematic diagram of the adjustment mechanism of a transformer withstand voltage test device proposed in the present invention;

[0020] Figure 4 This is a schematic diagram of the auxiliary mechanism of a transformer withstand voltage test device proposed in the utility model.

[0021] Legend:

[0022] 1. Test rack; 2. Test data machine; 3. Pressure measuring circuit; 4. Adjustment mechanism; 40. Placement slot; 41. Anti-slip slot; 42. Limit slot; 43. Positioning plate; 44. Sliding plate; 45. Sealing plate; 46. Anti-bias hole; 47. Pin body; 48. Handle; 5. Auxiliary mechanism; 50. Groove; 51. Pick; 52. Arc block; 53. Small spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Reference Figure 1-Figure 3, an embodiment provided by the utility model: a transformer withstand voltage test device, including a test rack 1, an adjustment mechanism 4 is provided on the test rack 1, by setting the adjustment mechanism 4, transformers of different specifications are pressed and fixed to a certain extent and the pins are prevented from being offset and bent, an auxiliary mechanism 5 is provided on the adjustment mechanism 4, by setting the auxiliary mechanism 5, the test device is closed and fixed during transportation to prevent it from loosening and falling off, the adjustment mechanism 4 includes a placement slot 40, the placement slot 40 is opened on the bottom inner wall of the test rack 1, by setting the placement slot 40, it is convenient to place transformers of different specifications, both sides of the test rack 1 A limiting groove 42 is provided on the outer wall, and a positioning plate 43 is slidably connected to the inner wall of the side of the test frame 1. By setting the positioning plate 43, a certain pressure is applied to the transformer to prevent it from shaking left and right and loosening during the test, which affects the test accuracy. The inner walls on both sides of the limiting groove 42 are slidably connected to sliding plates 44, and the top outer wall of the sliding plate 44 is fixedly connected to a sealing plate 45. The top inner wall of the positioning plate 43 is provided with an anti-deflection hole 46, and the bottom outer wall of the sealing plate 45 is fixedly connected to a pin body 47. The transformer is pressure tested by setting the pin body 47. The above structure is a prior art, so it will not be described in detail.

[0025] Reference Figure 2-Figure 3 The length and width of the positioning plate 43 are adapted to the inner diameter of the test rack 1. Anti-slip grooves 41 are provided on both side outer walls of the test rack 1. The pin body 47 is slidably connected to the side inner wall of the anti-deflection hole 46. The anti-deflection hole 46 is provided to prevent the pin from being bent and damaged by external influences. The side inner wall of the anti-deflection hole 46 is fixedly connected with an insulating pad, and the top outer wall of the sealing plate 45 is fixedly connected with a handle 48. The handle 48 is provided to facilitate the opening and closing adjustment of the sealing plate 45. The principle of the pressure measuring circuit 3: one end of the test data machine 2 is fixedly connected to the top outer wall of the sealing plate 45, and the test data machine 2 is fixedly connected to the outer wall of one side of the test rack 1, and the top outer wall of the test data machine 2 is fixedly connected to the pressure measuring circuit 3.

[0026] Reference Figure 3-Figure 4 The auxiliary mechanism 5 includes a groove 50, which is opened on the inner wall of the side of the sliding plate 44, and a paddle 51 is slidably connected to the inner wall of one side of the groove 50, and an outer wall of one side of the paddle 51 is fixedly connected to an arc block 52. By setting the arc block 52, the sliding plate 44 is clamped in the limiting groove 42, so that the entire device can be easily carried and transported to prevent loosening and falling off. The outer wall of the side of the paddle 51 away from the arc block 52 is fixedly connected to a small spring 53. The arc block 52 passes through the inner wall of one side of the sliding plate 44 and extends to the outer wall of the side of the sliding plate 44, and the arc block 52 is clamped in the inner wall of one side of the limiting groove 42. The end of the small spring 53 away from the paddle 51 is fixedly connected to the inner wall of one side of the sliding plate 44, and the small spring 53 is set to continuously generate thrust on the paddle 51, and the outer walls of both sides of the paddle 51 are fixedly connected to a frosting pad.

[0027] Working principle: by placing the transformer to be tested into the placement slot 40, then sliding the positioning plate 43 to connect to the inner wall of the side of the test frame 1, and pressing the positioning plate 43 on the top of the transformer to prevent loosening, then inserting the sliding plate 44 into the limit slot 42, guiding and positioning the pin body 47 on the sealing plate 45, then the sealing plate 45 falls and drives the pin body 47 to pass through the anti-bias hole 46, so that the pin body 47 contacts the transformer, then turning on the test data machine 2 to transmit the pressure measuring current to the pin body 47 through the pressure measuring line 3, so that the pin body 47 performs a withstand voltage test on the transformer, and at the same time, when the equipment as a whole needs to be transported and carried, by inserting the sliding plate 44 into the bottom of the limit slot 42, the arc block 52 is clamped on one side inner wall of the limit slot 42, and at the same time, by pulling the paddle 51 to squeeze the small spring 53, and the movement of the paddle 51 drives the arc block 52 to move, so that the arc block 52 is separated from the inner wall of one side of the limit slot 42, and the sealing plate 45 is conveniently separated and clamped.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A transformer withstand voltage test device, comprising a test frame (1), characterized in that: The test rack (1) is provided with an adjustment mechanism (4), which is used to press and fix transformers of different specifications and prevent pins from being deflected and bent by setting the adjustment mechanism (4). The adjustment mechanism (4) is provided with an auxiliary mechanism (5), which is used to close and fix the test device during transportation and carrying to prevent it from being loosened and falling off by setting the auxiliary mechanism (5). The adjustment mechanism (4) includes a placement slot (40), the placement slot (40) is provided on the bottom inner wall of the test rack (1), and the two side outer walls of the test rack (1) are provided with limiting slots (42). The side inner walls of the test rack (1) are slidably connected to a positioning plate (43), and the two side inner walls of the limiting slot (42) are slidably connected to a sliding plate (44). The top outer wall of the sliding plate (44) is fixedly connected to a sealing plate (45), the top inner wall of the positioning plate (43) is provided with an anti-deflection hole (46), and the bottom outer wall of the sealing plate (45) is fixedly connected to a pin body (47).

2. A transformer withstand voltage test device according to claim 1, characterized in that: The auxiliary mechanism (5) comprises a groove (50), the groove (50) being formed on the inner wall of the side of the sliding plate (44), a paddle (51) being slidably connected to the inner wall of one side of the groove (50), an arc-shaped block (52) being fixedly connected to the outer wall of one side of the paddle (51), and a small spring (53) being fixedly connected to the outer wall of the side of the paddle (51) away from the arc-shaped block (52).

3. The transformer withstand voltage test device according to claim 1, characterized in that: The length and width of the positioning plate (43) are adapted to the inner diameter of the test rack (1), and anti-slip grooves (41) are provided on the outer walls of both sides of the test rack (1).

4. The transformer withstand voltage test device according to claim 1, characterized in that: The pin body (47) is slidably connected to the side inner wall of the anti-deflection hole (46), and the side inner wall of the anti-deflection hole (46) is fixedly connected with an insulating pad.

5. The transformer withstand voltage test device according to claim 1, characterized in that: A handle (48) is fixedly connected to the top outer wall of the sealing plate (45), and one end of the pressure measuring circuit (3) principle test data machine (2) is fixedly connected to the top outer wall of the sealing plate (45).

6. The transformer withstand voltage test device according to claim 2, characterized in that: The arc block (52) passes through an inner wall of one side of the sliding plate (44) and extends to an outer wall of a side of the sliding plate (44). The arc block (52) is clamped on an inner wall of one side of the limiting groove (42).

7. The transformer withstand voltage test device according to claim 2, characterized in that: One end of the small spring (53) away from the paddle (51) is fixedly connected to an inner wall of one side of the sliding plate (44), and both outer walls of the paddle (51) are fixedly connected with a grinding pad.

8. The transformer withstand voltage test device according to claim 1, characterized in that: A test data machine (2) is fixedly connected to an outer wall on one side of the test machine frame (1), and a pressure measuring circuit (3) is fixedly connected to an outer wall on the top of the test data machine (2).

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