A vacuum tank for breakdown discharge test

Abstract

The utility model discloses a vacuum jar for breakdown discharge test belongs to discharge test jar technical field, solves the problem that the present discharge test water vapor condensation leads to inaccurate measurement result. The vacuum jar includes pressure jar, the pressure jar opening end is equipped with the sealing door of hinge with it, the sealing door with pressure jar between be equipped with a plurality of even distribution's locking assembly, the pressure jar front end top be equipped with a plurality of high -voltage output terminal, the pressure jar rear end be equipped with a plurality of with high -voltage output terminal quantity corresponding ground output terminal, the high -voltage output terminal, ground output terminal one end extend to the pressure jar, the pressure jar rear end be equipped with with its intercommunication vacuum pump, the pressure jar inner chamber below both sides be equipped with walking boss, the walking boss on be equipped with jar trolley. The vacuum jar of the utility model can guarantee the condition that discharge test carries on smoothly, improves the precision of measurement result.

Description

Technical Field

[0001] This utility model relates to the field of discharge test tank technology, and in particular to a vacuum tank for breakdown discharge testing. Background Technology

[0002] A voltage breakdown tester is a device used to test the voltage breakdown of solid insulating materials. It is primarily used to test the breakdown strength and withstand voltage time of solid insulating materials under power frequency or DC voltage. Breakdown discharge tests are generally required for insulating materials used in new products.

[0003] Existing breakdown discharge tests typically involve placing the product under test in a sealed vacuum chamber. During the test, as the ambient temperature inside the vacuum chamber rises, the hot and humid air encounters the low-temperature product surface, causing water vapor to condense and form dew. Water droplets adhering to the surface of the insulating material reduce its dielectric strength and accelerate the aging process, leading to deviations in the test results. Furthermore, the formation of condensation is random and uneven; the degree of condensation may vary on different test surfaces, and even on different parts of the same test sample, resulting in significant differences between a set of test data and failing to reflect the true insulation performance of the material. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the prior art by providing a vacuum container for breakdown discharge testing, which can improve the accuracy of measurement results while ensuring the smooth conduct of the discharge test, and has the characteristics of wide applicability and strong practicality.

[0005] The technical solution adopted by this utility model is as follows: a vacuum tank for breakdown discharge testing, including a pressure tank, the opening end of the pressure tank is provided with a sealing door hinged thereto, and multiple evenly distributed locking components are provided between the sealing door and the pressure tank, the front top of the pressure tank is provided with multiple high-voltage output terminals, the rear end of the pressure tank is provided with multiple grounding output terminals corresponding to the number of high-voltage output terminals, one end of the high-voltage output terminals and the grounding output terminals extends into the pressure tank, the rear end of the pressure tank is provided with a vacuum pump connected thereto, the lower sides of the inner cavity of the pressure tank are provided with walking bosses, the walking bosses are provided with a tank trolley, the inner cavity of the pressure tank is provided with multiple heating components for drying air, and a pressure sensor for detecting the pressure inside the tank is provided on one side of the pressure tank.

[0006] As a further improvement, the locking assembly includes a mounting base, a screw, and a locking handwheel. The mounting base is mounted on the outer surface of the pressure tank, and one end of the screw is rotatably mounted on the mounting base, while the other end is threadedly connected to the locking handwheel.

[0007] Furthermore, the heating assembly includes an electric heating wire and a heat transfer plate. The heat transfer plate is installed on the inner wall of the pressure tank, and the electric heating wire is installed on the heat transfer plate. The electric heating wire is electrically connected to an external controller.

[0008] Furthermore, the heat transfer plate is made of copper or aluminum.

[0009] Furthermore, the pressure tank is provided with multiple glass windows on both sides.

[0010] Furthermore, a pressure gauge is provided on the pressure tank on one side of the pressure sensor.

[0011] Furthermore, the pressure tank has a reserved opening at the top, and a camera is installed in the reserved opening.

[0012] Furthermore, the pressure tank is provided with a vent hole at the top, and a manual valve is provided on the vent hole.

[0013] Furthermore, the pressure tank is provided with a support base at its bottom.

[0014] Beneficial effects Compared with the prior art, this utility model has the following advantages: This invention relates to a vacuum chamber for breakdown discharge testing. Using a pressure vessel as the test chamber, it can withstand higher atmospheric pressures during testing, thus enabling breakdown discharge tests under different atmospheric pressures. In use, rotating the locking handwheel moves it away from the sealing door. Turning the screw releases the locking handwheel from its position, allowing the operator to open the sealing door. After opening the door, the product to be tested is placed onto the trolley inside the chamber. The trolley travels along the guide rails to below the high-voltage output terminals. Different wires are then used to connect the product to the high-voltage output terminals and the grounding output terminals. Finally, rotating the screw tightens the locking handwheels in different directions, causing them to press against the sealing door. This system effectively seals the inside of the tank. Upon power-on, a discharge test is conducted on the product via the high-voltage output terminal. During the test, a pressure sensor reflects the pressure inside the tank. Simultaneously, the heating element is powered on, and the heating wire transfers heat to the heat transfer plate. Water vapor generated during the discharge test is dried and vaporized upon contact with the heat transfer plate, effectively preventing condensation and improving the accuracy of the measurement results. When a negative pressure test is required, a vacuum pump can be used to evacuate the pressure tank. This device can meet both positive and negative pressure testing requirements, thus satisfying the product's testing environment. Furthermore, its excellent sealing performance contributes to the accuracy of experimental data, making it highly practical and widely applicable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 for Figure 1 Enlarged schematic diagram of the cross-sectional structure at point AA.

[0016] Among them: 1-pressure tank, 2-sealed door, 3-locking assembly, 4-heating assembly, 5-high pressure output terminal, 6-grounding output terminal, 7-vacuum pump, 8-walking boss, 9-tank trolley, 10-pressure sensor, 11-pressure gauge, 12-manual valve, 13-glass window, 14-camera, 15-support base, 31-mounting seat, 32-screw, 33-locking handwheel, 41-heat transfer plate, 42-electric heating wire. Detailed Implementation

[0017] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0018] See Figure 1-2As shown, this utility model discloses a vacuum tank for breakdown discharge testing, comprising a pressure tank 1, a sealing door 2 hinged to the opening end of the pressure tank 1, multiple evenly distributed locking components 3 between the sealing door 2 and the pressure tank 1, multiple high-voltage output terminals 5 at the top front end of the pressure tank 1, and multiple grounding output terminals 6 corresponding to the number of high-voltage output terminals 5 at the rear end of the pressure tank 1. One end of each of the high-voltage output terminals 5 and grounding output terminals 6 extends into the pressure tank 1. A vacuum pump 7 connected to the rear end of the pressure tank 1 is provided. Walking bosses 8 are provided on both sides below the inner cavity of the pressure tank 1, and an internal trolley 9 is provided on the walking bosses 8. Multiple heating components 4 for drying air are provided on the inner cavity of the pressure tank 1. A pressure sensor 10 for detecting the pressure inside the tank is provided on one side of the pressure tank 1. By using the pressure tank 1 as the test tank, it can withstand a large air pressure during the test, thereby enabling breakdown discharge testing under different atmospheric pressures. In use, rotating the locking handwheel 33 moves it away from the sealing door 2. After rotating the screw 32, the locking handwheel 33 no longer presses against the sealing door 2, allowing the operator to... The operator can open the sealing door 2 and place the product to be tested onto the trolley 9 inside the tank. The trolley 9 moves along the walking platform 8 to below the high-voltage output terminal 5. Then, different wires are used to connect the product to the high-voltage output terminal 5 and the grounding output terminal 6. Next, the screw 32 is turned to tighten the locking handwheels 33 in different directions, so that the locking handwheels 33 press against the sealing door 2, thereby achieving the function of sealing inside the tank. Power is turned on, and a discharge test is performed on the product through the high-voltage output terminal 5. During the test, the pressure sensor 10 reflects the pressure inside the tank. At the same time, the heating component 4 is powered on and starts working. After the electric heating wire 42 is heated, the heat is transferred to the heat transfer plate 41. The water vapor generated in the discharge test is dried and vaporized after encountering the heat transfer plate 41, thereby effectively preventing water droplets from condensing and improving the accuracy of the measurement results. When a negative pressure test is required, the pressure tank can be evacuated by a vacuum pump. This device can meet the test requirements for both positive and negative pressure, thereby meeting the test environment of the product. Moreover, this device has good sealing performance, which is conducive to improving the accuracy of experimental data.

[0019] Specifically, the locking assembly 3 includes a mounting base 31, a screw 32, and a locking handwheel 33. The mounting base 31 is mounted on the outer surface of the pressure tank 1. One end of the screw 32 is rotatably mounted on the mounting base 31, and the other end is threadedly connected to the locking handwheel 33. By using the locking handwheels 33 in different positions, the sealing door is pressed tightly onto the pressure tank 1, which makes the vacuum tank well sealed and helps to improve the accuracy of experimental data.

[0020] Preferably, the heating assembly 4 includes an electric heating wire 42 and a heat transfer plate 41. The heat transfer plate 41 is installed on the inner wall of the pressure tank 1, and the electric heating wire 42 is installed on the heat transfer plate 41. The electric heating wire 42 is electrically connected to an external controller, which controls the electric heating wire 42 to heat. The water vapor generated during the discharge test is dried and vaporized after encountering the heat transfer plate 41, thereby effectively preventing water droplets from condensing and improving the accuracy of the measurement results.

[0021] Furthermore, the heat transfer plate 41 is made of copper or aluminum. Copper and aluminum have good thermal conductivity, which is conducive to transferring the heat generated by the electric heating wire 42 to the heat transfer plate 41. The setting of the heat transfer plate 41 increases the heating area, making the effect of preventing water droplets from condensing better.

[0022] Furthermore, multiple glass windows 13 are provided on both sides of the pressure tank 1, which facilitates the operator to observe the internal situation through the glass windows 13.

[0023] Furthermore, a pressure gauge 11 is provided on the pressure tank 1 on one side of the pressure sensor 10, so that the operator can observe the pressure inside the pressure tank 1 in real time on site.

[0024] Furthermore, a reserved opening is provided on the top of the pressure tank 1, and a camera 14 is installed on the reserved opening. The camera 14 is a waterproof camera that can clearly capture the situation inside the vacuum tank and supports video recording and storage.

[0025] Furthermore, a vent hole is provided on the top of the pressure tank 1, and a manual valve 12 is provided on the vent hole. After the gas in the pressure tank is discharged by the manual valve 12, the breakdown discharge test of the product under a certain pressure is completed.

[0026] Furthermore, a support base 15 is provided at the bottom of the pressure tank 1 to provide support.

[0027] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A vacuum container for breakdown discharge testing, characterized in that, The pressure tank (1) includes a pressure tank (1) with a sealing door (2) hinged to the opening end of the pressure tank (1). Multiple evenly distributed locking components (3) are provided between the sealing door (2) and the pressure tank (1). Multiple high-pressure output terminals (5) are provided at the top front end of the pressure tank (1). Multiple grounding output terminals (6) corresponding to the number of high-pressure output terminals (5) are provided at the rear end of the pressure tank (1). One end of the high-pressure output terminals (5) and the grounding output terminals (6) extends into the pressure tank (1). A vacuum pump (7) connected to the rear end of the pressure tank (1) is provided. Walking bosses (8) are provided on both sides below the inner cavity of the pressure tank (1). A trolley (9) is provided on the walking bosses (8). Multiple heating components (4) for drying air are provided on the inner cavity of the pressure tank (1). A pressure sensor (10) for detecting the pressure inside the tank is provided on one side of the pressure tank (1).

2. The vacuum container for breakdown discharge testing according to claim 1, characterized in that, The locking assembly (3) includes a mounting base (31), a screw (32) and a locking handwheel (33). The mounting base (31) is mounted on the outer surface of the pressure tank (1). One end of the screw (32) is rotatably mounted on the mounting base (31), and the other end is threadedly connected to the locking handwheel (33).

3. A vacuum container for breakdown discharge testing according to claim 1, characterized in that, The heating assembly (4) includes an electric heating wire (42) and a heat transfer plate (41). The heat transfer plate (41) is installed on the inner wall of the pressure tank (1), and the electric heating wire (42) is installed on the heat transfer plate (41). The electric heating wire (42) is electrically connected to an external controller.

4. A vacuum container for breakdown discharge testing according to claim 3, characterized in that, The heat transfer plate (41) is made of copper or aluminum.

5. A vacuum container for breakdown discharge testing according to claim 1, characterized in that, The pressure tank (1) is provided with multiple glass windows (13) on both sides.

6. A vacuum container for breakdown discharge testing according to claim 1, characterized in that, A pressure gauge (11) is provided on the pressure tank (1) on one side of the pressure sensor (10).

7. A vacuum container for breakdown discharge testing according to claim 1, characterized in that, The pressure tank (1) has a reserved opening at the top, and a camera (14) is installed on the reserved opening.

8. A vacuum container for breakdown discharge testing according to claim 1, characterized in that, The pressure tank (1) has a vent hole on its top, and a manual valve (12) is provided on the vent hole.

9. A vacuum container for breakdown discharge testing according to claim 1, characterized in that, The pressure tank (1) is provided with a support base (15) at the bottom.

Images