Insulating material withstand voltage test device

Abstract

The utility model belongs to the technical field of voltage withstanding tests, and particularly relates to an insulating material voltage withstanding test device which comprises a test rack and a test container, the test rack is placed in the test container, the test rack comprises a bottom plate, a top plate and a plurality of supporting columns arranged between the bottom plate and the top plate, and a conductive column vertically penetrates through the bottom plate. A lower electrode ball is arranged at the top end of the conductive column, an upper electrode plate is arranged at the bottom end of the conductive column, a limiting rod vertically penetrates through the top plate, a metal rod vertically penetrates through the limiting rod in a sliding mode, an upper electrode ball is arranged at the bottom end of the metal rod, an insulating material is clamped between the upper electrode ball and the lower electrode ball, and a supporting frame used for stabilizing the insulating material is arranged on the bottom plate. A lower electrode plate is arranged at the bottom of the test container, the upper electrode plate abuts against the lower electrode plate, and the metal rod and the lower electrode plate are connected with the two ends of the voltage increasing circuit respectively. According to the utility model, the two electrode balls are vertically arranged, and the support frame is arranged to support the insulating material, so that the stability of the insulating material is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of voltage resistance testing, in particular to a voltage resistance testing device for insulating materials. Background Art

[0002] The national standard GB / T1408.1, "Test Methods for Electrical Strength of Insulating Materials - Part 1: Tests at Power Frequency," specifies a test method for measuring the electrical strength of solid insulating materials at power frequency: solid insulating materials of varying shapes are sandwiched between metal electrodes of corresponding shapes. A voltage is applied between the two electrodes, and the voltage difference is continuously increased. The electrical strength of the material is measured by measuring the voltage it can withstand. To prevent flashover during the voltage application process, the metal electrodes and the solid insulating material are typically placed in a liquid with a certain electrical strength, such as oil.

[0003] In the experiment, the insulation material was fixed by clamping the left and right electrodes. However, due to being immersed in oil, the friction coefficient of the insulation material surface was small, and the insulation material easily slipped, making it difficult to fix properly. Utility Model Content

[0004] In order to solve the problems in the above background technology, the utility model provides an insulating material withstand voltage test device, in which two electrode balls are arranged vertically and a support frame is provided to support the insulating material, thereby improving the stability of the insulating material.

[0005] The utility model provides an insulating material withstand voltage test device, comprising a test frame and a test container, the test frame is placed in the test container, the test frame comprises a bottom plate, a top plate and a plurality of support columns arranged between the bottom plate and the top plate, a conductive column is vertically penetrated in the bottom plate, a lower electrode ball is arranged at the top of the conductive column, an upper electrode plate is arranged at the bottom end of the conductive column, a limiting rod is vertically penetrated in the top plate, a metal rod is vertically slidably penetrated in the limiting rod, an upper electrode ball is arranged at the bottom end of the metal rod, an insulating material is sandwiched between the upper electrode ball and the lower electrode ball, a support frame for stabilizing the insulating material is arranged on the bottom plate, a lower electrode plate is arranged at the bottom of the test container, the upper electrode plate is abutted against the lower electrode plate, and the metal rod and the lower electrode plate are respectively connected to two ends of a pressurized circuit.

[0006] Furthermore, the support frame includes a plurality of vertically arranged support rods, which are arranged around the lower electrode ball. The top ends of the support rods are provided with stepped support blocks, and the insulating material is placed on the steps of the support blocks.

[0007] Furthermore, an adjustment component for adjusting the support frame is provided on the base plate, and the adjustment component includes a slider, which is provided at the bottom end of the support rod, and a slide groove is radially opened in the base plate. The slider is slidably provided in the slide groove, and a spring is provided between the slider and the groove wall of the slide groove. The spring drives the slider to move away from the lower electrode ball. A fixed plate is provided at the outer edge of the base plate, and a threaded rod is connected with a horizontal thread in the fixed plate. One end of the threaded rod is abutted against the support rod, and a nut is provided at the other end of the threaded rod.

[0008] Furthermore, the limiting rod is threadedly connected to the top plate to adjust the height of the limiting rod.

[0009] Furthermore, at least two sets of locking assemblies for locking the top plate are provided on the outer wall of the test container, and the locking assembly includes two fixed blocks, a locking rod is rotatably connected between the two fixed blocks, a clearance groove is opened in the top plate, the locking rod is movably set in the clearance groove, a locking ring is threadedly connected to the locking rod, the locking ring presses the top plate, and two ear plates are provided on the locking ring.

[0010] Furthermore, a sealing ring is provided between the top plate and the top of the test container.

[0011] Furthermore, a through hole is opened at the bottom of the test container, and the lower electrode plate is arranged on the hole wall of the through hole. The top surface of the lower electrode plate is lower than the top surface of the bottom of the test container. When the bottom plate contacts the bottom of the test container, the upper electrode plate penetrates into the through hole and just contacts the lower electrode plate.

[0012] Furthermore, an annular oil drain channel is provided in the bottom of the test container, and a plurality of oil leakage holes are provided on the top surface of the bottom of the test container, which are connected to the oil drain channel. An oil drain hole is also provided in the bottom of the test container, one end of the oil drain hole is connected to the oil drain channel, and the other end of the oil drain hole leads to the outside of the test container. A sealing plug for sealing the oil drain hole is provided in the test container.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] (1) The upper electrode ball and the lower electrode ball are arranged vertically and the insulating material is sandwiched in the middle. At the same time, a support frame is provided on the bottom plate to support the insulating material, thereby improving the stability of the insulating material.

[0015] (2) An adjustment component is provided on the base plate. The nut is rotated to drive the threaded rod to rotate, and the threaded rod pushes the support rod to move. The support rod drives the slider to move in the slide groove, and the support rod drives the support block to move. Thus, the position of the support frame can be adjusted according to the size of the insulating material, so that the insulating material can be better placed on the support frame.

[0016] (3) After fixing the insulating material on the test frame, place the test frame into the test container and add oil into the test container. Turn the locking rod so that the locking rod enters the clearance groove, and then turn the locking ring so that the locking ring presses the top plate, so that the test frame and the test container are stably connected together and the oil can be prevented from spilling out. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of an insulating material withstand voltage test device;

[0019] Figure 2 It is a cross-sectional view of a device for testing the withstand voltage of insulating materials;

[0020] Figure 3 Schematic diagram of the structure inside the test container;

[0021] Explanation of the accompanying symbols: 1. Test frame; 10. Bottom plate; 11. Top plate; 12. Support column; 13. Conductive column; 130. Lower electrode ball; 131. Upper electrode plate; 14. Support frame; 140. Support rod; 141. Support block; 15. Adjustment assembly; 150. Slider; 151. Slide; 152. Spring; 153. Fixing plate; 154. Threaded rod; 155. Nut; 16. Limiting rod; 160. Accommodating groove; 17. Metal rod; 18. Upper electrode ball; 2. Test container; 20. Through hole; 21. Lower electrode plate; 22. Oil drain channel; 23. Oil leakage hole; 24. Oil drain hole; 25. Sealing plug; 3. Locking assembly; 30. Fixing block; 31. Locking rod; 32. Make way groove; 33. Locking ring; 34. Ear plate; 4. Sealing ring. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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.

[0023] The following is combined with Figure 1 To the attached Figure 3 And specific embodiments discuss the present invention in detail.

[0024] Reference Figure 1-3 The utility model provides an insulating material withstand voltage test device, which includes a test frame 1 and a test container 2, and the test frame 1 is placed in the test container 2.

[0025] The test frame 1 includes a base plate 10, a top plate 11 and multiple support columns 12. The support columns 12 are fixedly connected between the base plate 10 and the top plate 11. A conductive column 13 is vertically passed through the center position of the base plate 10. A lower electrode ball 130 is fixedly connected to the top of the conductive column 13, and an upper electrode plate 131 is fixedly connected to the bottom end of the conductive column 13. A support frame 14 for supporting insulating materials is also provided on the base plate 10. The support frame 14 includes multiple vertically arranged support rods 140. The multiple support rods 140 are arranged around the lower electrode ball 130. A stepped support block 141 is fixedly connected to the top of the support rod 140. The insulating material is placed on the steps of the support block 141, so that the insulating material can be better fixed.

[0026] An adjustment component 15 for adjusting the support frame 14 is also provided on the base plate 10. The adjustment component 15 includes a slider 150, which is fixedly connected to the bottom end of the support rod 140. A slide groove 151 is radially opened in the base plate 10, and the slider 150 is slidably arranged in the slide groove 151. A spring 152 is fixedly connected between the slider 150 and the groove wall of the slide groove 151. The spring 152 is located between the slider 150 and the lower electrode ball 130. The spring 152 can drive the slider 150 to move away from the lower electrode ball 130; a fixing plate 153 is fixedly connected at the outer edge of the base plate 10, and a threaded rod 154 is horizontally threaded in the fixing plate 153. One end of the threaded rod 154 abuts against the support rod 140, and the other end of the threaded rod 154 is fixedly connected to a nut 155. The nut 155 facilitates the rotation of the threaded rod 154.

[0027] A limiting rod 16 is vertically passed through the center position of the top plate 11, and a metal rod 17 is vertically slidably inserted in the limiting rod 16. An upper electrode ball 18 is fixedly connected to the bottom end of the metal rod 17. A receiving groove 160 is provided in the bottom of the limiting rod 16, and the upper electrode ball 18 is movably arranged in the receiving groove 160; insulating material is sandwiched between the upper electrode ball 18 and the lower electrode ball 130, and the limiting rod 16 is threadedly connected to the top plate 11, so that the height of the limiting rod 16 can be adjusted, and then the height of the upper electrode ball 18 can be adjusted according to the thickness of the insulating material.

[0028] A through hole 20 is provided at the center of the bottom of the test container 2, and a lower electrode plate 21 is fixedly connected to the wall of the through hole 20. The top surface of the lower electrode plate 21 is lower than the bottom top surface of the test container 2. When the bottom plate 10 contacts the bottom top surface of the test container 2, the upper electrode plate 131 is inserted into the through hole 20 and just contacts the lower electrode plate 21; an annular oil drainage channel 22 is provided in the bottom of the test container 2, and a plurality of oil leakage holes 23 are provided on the bottom top surface of the test container 2. The oil leakage holes 23 are connected to the oil drainage channel 22. An oil drainage hole 24 is also provided in the bottom of the test container 2. One end of the oil drainage hole 24 is connected to the oil drainage channel 22, and the other end of the oil drainage hole 24 leads to the outside of the test container 2. A sealing plug 25 for sealing the oil drainage hole 24 is also provided in the test container 2. The sealing plug 25 is threadedly connected to the oil drainage hole 24, thereby improving the stability of the sealing plug 25 and the sealing performance of the oil drainage hole 24.

[0029] Two groups of locking assemblies 3 for locking the top plate 11 are provided on the outer wall of the test container 2. The locking assembly 3 includes two fixed blocks 30. A T-shaped locking rod 31 is rotatably connected between the two fixed blocks 30. A clearance groove 32 is opened in the top plate 11. The locking rod 31 is movably set in the clearance groove 32. A locking ring 33 is threadedly connected to the locking rod 31. The locking ring 33 presses the top plate 11. Two ear plates 34 are also provided on the locking ring 33. The ear plates 34 facilitate the rotation of the locking ring 33. The bottom surface of the top plate 11 is also fixedly connected to the sealing ring 4. The sealing ring 4 is clamped between the top plate 11 and the top of the test container 2. The sealing ring 4 is used to seal the gap between the top plate 11 and the test container 2 to prevent oil from spilling.

[0030] The above further describes the present invention with the help of specific embodiments, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the present invention.

Claims

1. An insulating material withstand voltage test device, characterized in that: The invention comprises a test frame and a test container, wherein the test frame is placed in the test container, the test frame comprises a bottom plate, a top plate and a plurality of support columns arranged between the bottom plate and the top plate, a conductive column is vertically penetrated in the bottom plate, a lower electrode ball is arranged at the top of the conductive column, an upper electrode plate is arranged at the bottom end of the conductive column, a limiting rod is vertically penetrated in the top plate, a metal rod is vertically slid through the limiting rod, an upper electrode ball is arranged at the bottom end of the metal rod, an insulating material is sandwiched between the upper electrode ball and the lower electrode ball, a support frame for stabilizing the insulating material is arranged on the bottom plate, a lower electrode plate is arranged at the bottom of the test container, the upper electrode plate abuts against the lower electrode plate, and the metal rod and the lower electrode plate are respectively connected to the two ends of the pressurized circuit.

2. The insulation material withstand voltage test device according to claim 1, characterized in that: The support frame includes a plurality of vertically arranged support rods, the plurality of support rods are arranged around the lower electrode ball, the top ends of the support rods are provided with stepped support blocks, and the insulating material is placed on the steps of the support blocks.

3. The insulation material withstand voltage test device according to claim 2, characterized in that: The bottom plate is provided with an adjustment component for adjusting the support frame, and the adjustment component includes a slider, which is provided at the bottom end of the support rod, and a slide groove is radially opened in the bottom plate, and the slider is slidably arranged in the slide groove, and a spring is provided between the slider and the groove wall of the slide groove, and the spring drives the slider to move in the direction away from the lower electrode ball, and a fixing plate is provided at the outer edge of the bottom plate, and a threaded rod is connected with a horizontal thread in the fixing plate, one end of the threaded rod abuts against the support rod, and a nut is provided at the other end of the threaded rod.

4. The insulation material withstand voltage test device according to claim 1, characterized in that: The limiting rod is threadedly connected to the top plate to adjust the height of the limiting rod.

5. The insulation material withstand voltage test device according to claim 1, characterized in that: At least two groups of locking assemblies for locking the top plate are provided on the outer wall of the test container, and the locking assembly includes two fixed blocks, a locking rod is rotatably connected between the two fixed blocks, a clearance groove is provided in the top plate, and the locking rod is movably arranged in the clearance groove, a locking ring is threadedly connected to the locking rod, and the locking ring presses the top plate, and the locking ring is provided with two ear plates.

6. The insulation material withstand voltage test device according to claim 1, characterized in that: A sealing ring is provided between the top plate and the top of the test container.

7. The insulation material withstand voltage test device according to claim 1, characterized in that: A through hole is provided at the bottom of the test container, and the lower electrode plate is arranged on the hole wall of the through hole. The top surface of the lower electrode plate is lower than the top surface of the bottom of the test container. When the bottom plate contacts the bottom of the test container, the upper electrode plate penetrates into the through hole and just contacts the lower electrode plate.

8. The insulation material withstand voltage test device according to claim 1, characterized in that: An annular oil drainage channel is provided in the bottom of the test container, and a plurality of oil leakage holes are provided on the top surface of the bottom of the test container, and the oil leakage holes are connected to the oil drainage channel. An oil drainage hole is also provided in the bottom of the test container, one end of the oil drainage hole is connected to the oil drainage channel, and the other end of the oil drainage hole leads to the outside of the test container. A sealing plug for sealing the oil drainage hole is provided in the test container.

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