A stepless voltage regulation voltage breakdown tester

Abstract

The present invention provides a stepless voltage regulation type voltage breakdown tester, which belongs to the technical field of voltage breakdown test. The stepless voltage regulation type voltage breakdown tester comprises a main box, a test main box is fixedly installed on the top surface of the main box, a control panel is arranged on the front surface of the test main box, a test box is fixedly installed inside the test main box, an electric telescopic rod is fixedly installed on the inner top surface of the test box, and a positioning clamping assembly is arranged inside the test box. Under the action of gear one, the present invention can make tooth plate two move toward the direction of the movable clamping block, so that the contact plate is away from the two sides of the test material, and when tooth plate two moves toward the direction of the movable clamping block, it can drive gear two to rotate, and then drive tooth plate three to move in the direction of the material, until the contact head at one end of tooth plate three contacts with the outer surface of the test material, thereby achieving the purpose of automatically releasing the residual electricity on the outer surface of the material after the experiment.

Description

Technical Field

[0001] The invention relates to the technical field of voltage breakdown test, in particular to a stepless voltage regulation type voltage breakdown tester. Background Art

[0002] The stepless voltage breakdown tester, also known as the withstand voltage tester or voltage breakdown tester, is an instrument used to detect the withstand voltage performance of electrical equipment and insulating materials. It can provide adjustable voltage and gradually increase the voltage until the sample breaks down, thereby determining the withstand voltage limit of the material or equipment. The stepless voltage breakdown tester is a high-precision, adjustable voltage instrument, mainly used to test the withstand voltage performance of electrical equipment and insulating materials. It is widely used in electricity, electronics, insulating materials, scientific research and other fields, with the characteristics of gradual voltage adjustment, automatic recording of breakdown voltage, protection function, etc.

[0003] However, the existing stepless voltage regulation type voltage breakdown tester still has some problems in actual use. For example, during the breakdown test of materials, the existing stepless voltage regulation type voltage breakdown tester cannot automatically release the residual electricity on the outer surface of the material after the experiment is completed. This results in the need to discharge the material to the ground after the experiment is completed, which is very likely to cause danger during the discharge process. In addition, static electricity is very likely to occur on the outer surface of existing materials, and materials with static electricity will seriously affect the accuracy of subsequent experimental data during the experiment. Summary of the invention

[0004] In order to make up for the above deficiencies, the present invention provides a stepless voltage regulation type voltage breakdown tester that overcomes the above technical problems or at least partially solves the above problems.

[0005] The present invention is achieved in that:

[0006] The present invention provides a stepless voltage regulation type voltage breakdown tester, comprising a mainframe, a test mainframe is fixedly installed on the top surface of the mainframe, a control panel is arranged on the front surface of the test mainframe, a test box is fixedly installed inside the test mainframe, an electric telescopic rod is fixedly installed on the top surface of the inside of the test box, a positioning clamping component is arranged inside the test box, and a static elimination component is arranged inside the test box;

[0007] The positioning and clamping assembly comprises a bottom plate, the bottom plate is fixedly mounted on the inner bottom surface of the test box, a base is fixedly mounted on the top surface of the bottom plate, a prevention plate is fixedly mounted on the top surface of the base, a negative electrode plate is mounted in the middle of the top surface of the prevention plate, and the positioning and clamping assembly is used for clamping the experimental material and discharging it after detection;

[0008] The static elimination component comprises a cylinder, which is fixedly mounted inside the base, and two sealing clamping plates are movably clamped inside the cylinder. The static elimination component is configured to eliminate static electricity on the surface of experimental materials.

[0009] In a preferred solution, two vertical plates are fixedly installed on the top surface of the prevention plate, and two through grooves are penetrated on one side of the two vertical plates, and a top plate one is fixedly installed on the top of the vertical plate, and two through grooves one are penetrated on the top surface of the top plate one, and the inside of the two through grooves one are movably connected with a clamping plate, a pressure plate is fixedly installed on the bottom end of the clamping plate, a positive plate is installed in the middle of the bottom surface of the pressure plate, a top plate two is fixedly installed on the top of the clamping plate, and the output end of the electric telescopic rod is fixedly connected to the top surface of the top plate two.

[0010] In a preferred solution, an external frame is fixedly installed on one side of the vertical plate, a movable clamping block is movably connected inside the external frame, a circular shaft is fixedly installed on both sides of the movable clamping block, a positioning shaft is fixedly installed between the two clamping plates, an outer sleeve is rotatably installed on the outer surface of the positioning shaft, and a connecting plate is connected between the circular shaft and the outer sleeve.

[0011] In a preferred solution, an I-shaped frame is fixedly installed inside the external frame, a plug-in shaft is fixedly installed inside the I-shaped frame, tooth plate 2 and tooth plate 1 are respectively clamped inside the I-shaped frame, tooth plate 2 and tooth plate 1 are arranged opposite to each other, and both are meshed with gear 1, one end of tooth plate 1 is fixedly connected to one side surface of the movable clamping block, and one end of tooth plate 2 is fixedly connected to a contact plate.

[0012] In a preferred solution, gear 2 is rotatably installed inside the through slot 2, a through slot 3 is opened inside the external frame, tooth plate 3 is movably connected inside the through slot 3, a contact head is fixedly installed at one end of the tooth plate 3, a grounding wire is fixedly connected to the bottom surface of the tooth plate 3, and tooth plates 2 and 3 are both meshed with gear 2.

[0013] In a preferred solution, a connecting rod is fixedly connected to one side surface of the sealing clamping plate, and a cavity two is isolated between the two sealing clamping plates, and two cavities one are isolated from the two side inner walls of the cylinder. A connecting rod is fixedly connected to one side surface of each sealing clamping plate, and one end of the connecting rod extends to the outside of the cylinder. A clamping rod is movably clamped inside the through groove three, and one end of the clamping rod is fixedly connected to the bottom surface of the movable clamping block, and one end of the connecting rod extending to the inside of the cylinder is fixedly connected to one side surface of the clamping rod.

[0014] In a preferred solution, a material storage box is fixedly installed inside the experimental main machine, a suction pipe is fixedly connected between the cylinder and the storage box, a one-way valve four is fixedly installed on the outer surface of the suction pipe, a discharging rack is fixedly installed on the bottom surface of the top plate one, a discharging nozzle is fixedly connected to one side surface of the discharging rack, a conveying pipe is fixedly connected to the outer surface of the cylinder, a one-way valve one is fixedly installed on the outer surface of the conveying pipe, and one end of the conveying pipe is fixedly connected to one side surface of the discharging nozzle.

[0015] In a preferred solution, a suction rack is fixedly installed on the top surface of the prevention plate, a return pipe is fixedly connected to one side surface of the suction rack, a one-way valve 2 is fixedly installed on the outer surface of the return pipe, one end of the one-way valve 2 extends to the interior of cavity 2, a connecting pipe is fixedly connected between cavity 2 and the storage box, and a one-way valve 3 is fixedly connected to the outer surface of the connecting pipe.

[0016] In a preferred solution, a suction frame is fixedly installed on the inner wall of the experimental mainframe, a plurality of suction grooves are provided on one side surface of the suction frame, and the plurality of suction grooves are equidistantly provided on the one side surface of the suction frame, a suction fan is fixedly installed on the rear surface of the mainframe, a connecting pipe is fixedly connected to the suction end of the suction fan, one end of the connecting pipe is fixedly connected to the suction frame, and the air outlet end of the suction fan is connected to an external pipeline.

[0017] In a preferred solution, a timing switch 2 is fixedly installed on the inner wall of one side of the external frame, a touch rod is fixedly connected to the surface of one side of the movable clamping block, and a timing switch 1 is fixedly connected to the top surface of the top plate 1, and both the timing switch 1 and the timing switch 2 are electrically connected to the suction fan.

[0018] The present invention provides a stepless voltage regulation type voltage breakdown tester, which has the following beneficial effects:

[0019] 1. By setting a positioning and clamping component, when the material is clamped, the movable clamping block can be driven to move toward the two sides of the external frame inside the external frame under the action of the connecting plate, so that the angle between the connecting plate and the external frame is smaller, and the movable clamping block can drive the tooth plate 1 to move synchronously when it moves. When the tooth plate 1 moves in the direction away from the vertical plate, it can drive the gear 1 to rotate, thereby driving the tooth plate 2 to move in the direction of the vertical plate, that is, to move toward the material held between the negative plate and the positive plate, until the two contact plates squeeze the material between the negative plate and the positive plate, so that the material can be further stably clamped, thereby achieving the purpose of auxiliary clamping of the experimental material.

[0020] 2. By setting up tooth plate three, under the action of gear one, tooth plate two can move toward the direction of the movable clamping block, so that the contact plate is away from the two sides of the experimental material, which is convenient for the subsequent taking and placing of the experimental material. In addition, when tooth plate two moves toward the direction of the movable clamping block, it can drive gear two to rotate, and then drive tooth plate three to move in the direction of the material until the contact head at one end of tooth plate three contacts the outer surface of the experimental material, thereby transmitting the residual electricity on the outer surface of the material to tooth plate three through the contact head, and finally discharged through the grounding wire for release, thereby achieving the purpose of automatically releasing the residual electricity on the outer surface of the material after the experiment.

[0021] 3. Through the setting, when the material is clamped, that is, when the movable clamping block moves in the direction away from the vertical plate, it can synchronously drive the clamping rod to move, so that the sealing clamping plate can be driven to move inside the cylinder through the connecting rod, and the cavity one is squeezed, and the carbon black powder inside the cavity one is squeezed into the inside of the conveying pipe, and then transported through the conveying pipe, and finally sprayed toward the material to be tested through the discharging rack and the discharging nozzle. The carbon black powder can effectively neutralize the static electricity on the surface of the material, thereby eliminating the static electricity and reducing the impact of static electricity, thereby achieving the purpose of eliminating the static electricity on the outer surface of the material to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is an overall stereogram provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the overall rear-view bottom structure provided by an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the internal structure of the experimental box provided in an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the structure of a positioning and clamping assembly provided in an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of the positioning shaft structure provided by an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of the structure of a positive electrode plate provided in an embodiment of the present invention;

[0029] Figure 7 A schematic diagram of the structure of a second timing switch provided in an embodiment of the present invention;

[0030] Figure 8 The embodiments of the present invention provide Figure 7 The enlarged structural diagram at A in the middle;

[0031] Fig. 9 A schematic diagram of a cross-sectional structure of a cylinder provided in an embodiment of the present invention;

[0032] Fig.10 A schematic diagram of the rear view structure of a cylinder provided in an embodiment of the present invention.

[0033] In the figure: 1, main box; 2, experimental main machine; 3, control panel; 4, test box; 5, protective door; 6, observation window; 7, handle; 8, support seat; 9, electric telescopic rod; 10, positioning clamping assembly; 1001, bottom plate; 1002, base; 1003, prevention plate; 1005, vertical plate; 1006, top plate 1; 1007, through slot 1; 1008, card plate; 1009, top plate 2; 1010, pressing plate; 1011, external frame; 1012, movable clamping block; 1013, round shaft; 1014, connecting plate; 1015, through slot 2; 1016, positioning shaft; 1017, outer sleeve; 1018, through slot 3; 1019, I-beam frame; 1020, plug-in shaft; 1021, gear 1; 1022, tooth plate 1; 1023, gear 2; 1024, tooth plate 2; 102 5. Resistance plate; 1026. Tooth plate three; 1027. Contact head; 1028. Ground wire; 11. Static elimination assembly; 1101. Cylinder; 1102. Sealing clamping plate; 1103. Cavity one; 1104. Cavity two; 1105. Connecting rod; 1106. Clamping rod; 1107. Delivery pipe; 1108. One-way valve one; 1110. Return pipe; 1111. One-way valve two; 111 2. Suction rack; 1113. Storage box; 1114. Connecting pipe; 1115. Check valve three; 1116. Suction pipe; 1117. Check valve four; 1118. Discharge rack; 1119. Discharge nozzle; 12. Suction rack; 13. Suction slot; 14. Suction fan; 15. Connecting pipe; 16. Negative plate; 17. Positive plate; 18. Timer switch one; 19. Touch rod; 20. Timer switch two. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0035] Reference Figure 1-Figure 10 The present invention provides a technical solution: a stepless voltage regulation type voltage breakdown tester, comprising a main box 1, an experimental main box 2 is fixedly installed on the top surface of the main box 1, a control panel 3 is arranged on the front surface of the experimental main box 2, a test box 4 is fixedly installed inside the experimental main box 2, an electric telescopic rod 9 is fixedly installed on the internal top surface of the test box 4, a positioning clamping component 10 is arranged inside the test box 4, and a static elimination component 11 is arranged inside the test box 4. Support seats 8 are fixedly installed at the four corners of the bottom surface of the main box 1 to stably support the device, so that the device as a whole is more stable during actual use. A protective door 5 is arranged on the front surface of the test box 4, and an observation window 6 is arranged on the front surface of the protective door 5, wherein the setting of the protective door 5 is used for protection during the experiment, and the setting of the observation window 6 facilitates the observation of the experimental conditions inside the test box 4, and a handle 7 is fixedly installed on the front surface of the protective door 5;

[0036] The positioning and clamping assembly 10 includes a bottom plate 1001, which is fixedly mounted on the inner bottom surface of the test box 4, a base 1002 is fixedly mounted on the top surface of the bottom plate 1001, a prevention plate 1003 is fixedly mounted on the top surface of the base 1002, and a negative plate 16 is mounted in the middle of the top surface of the prevention plate 1003. The positioning and clamping assembly 10 is used for clamping the experimental material and discharging it after detection;

[0037] Two vertical plates 1005 are fixedly installed on the top surface of the prevention plate 1003, and a through groove 1015 is penetrated on one side of the two vertical plates 1005. A top plate 1006 is fixedly installed on the top of the vertical plate 1005, and two through grooves 1007 are penetrated on the top surface of the top plate 1006. The insides of the two through grooves 1007 are movably connected with a clamping plate 1008, and a pressure plate 1010 is fixedly installed on the bottom end of the clamping plate 1008. The middle part of the bottom surface of the pressure plate 1010 is installed with a positive plate 17, and a top plate 1009 is fixedly installed on the top of the clamping plate 1008. The output end of the electric telescopic rod 9 is fixedly connected to the top surface of the top plate 1009.

[0038] During operation, during the experiment, first place the material to be tested on the top surface of the prevention plate 1003, and above the negative plate 16, and then control the electric telescopic rod 9 to start. During the start-up of the electric telescopic rod 9, the top plate 1009 can be driven to move downward, that is, the card plate 1008 is driven to move downward inside the through groove 1007. During the movement, the pressure plate 1010 below the card plate 1008 is driven to move downward, that is, the positive plate 17 below the pressure plate 1010 is driven to move toward the material to be tested, until the material to be tested is stably clamped between the negative plate 16 and the positive plate 17, and the stable clamping of the material is completed. Then, the experimental voltage is set through the control panel 3 to realize the voltage breakdown test of the material between the negative plate 16 and the positive plate 17, so that the material can be stably clamped during the voltage breakdown test, avoiding shaking during the experiment, which may cause inaccurate subsequent experimental data.

[0039] An external frame 1011 is fixedly installed on one side of the vertical plate 1005, and an active clamping block 1012 is movably connected inside the external frame 1011. A circular shaft 1013 is fixedly installed on both sides of the active clamping block 1012. A positioning shaft 1016 is fixedly installed between the two clamping plates 1008. An outer sleeve 1017 is rotatably installed on the outer surface of the positioning shaft 1016. A connecting plate 1014 is connected between the circular shaft 1013 and the outer sleeve 1017. An I-shaped frame 1019 is fixedly installed on each part, a plug-in shaft 1020 is fixedly installed inside the I-shaped frame 1019, tooth plate 2 1024 and tooth plate 1 1022 are respectively clamped inside the I-shaped frame 1019, tooth plate 2 1024 and tooth plate 1 1022 are arranged opposite to each other, and both are meshed with gear 1 1021, one end of tooth plate 1 1022 is fixedly connected to one side surface of the movable clamping block 1012, and one end of tooth plate 2 1024 is fixedly connected to a contact plate 1025.

[0040] During operation, when the material is clamped, that is, when the top plate 1009 drives the clamping plate 1008 and the pressure plate 1010 to move downward, the movable clamping block 1012 can be driven to move toward the two sides of the external frame 1011 inside the external frame 1011 under the action of the connecting plate 1014. As the height of the top plate 1009 descends, the angle between the connecting plate 1014 and the external frame 1011 becomes smaller, that is, the moving distance of the movable clamping block 1012 becomes farther. When the movable clamping block 1012 moves, it can drive the tooth plate 1022 to move synchronously. When the tooth plate 1022 moves in the direction away from the vertical plate 1005, it can drive the gear 1021 to rotate, thereby driving the tooth plate The second 1024 moves toward the direction of the vertical plate 1005, that is, moves toward the material held between the negative plate 16 and the positive plate 17, until the two contact plates 1025 squeeze the material between the negative plate 16 and the positive plate 17, so that the material can be further stably clamped, thereby achieving the purpose of auxiliary clamping of the experimental material. The size of the material will be fixed due to the accuracy of the experimental data, that is, when the negative plate 16 and the positive plate 17 clamp the experimental material, the contact plate 1025 can also contact the outer surface of the material, thereby achieving auxiliary clamping of the experimental material, so that the material can obtain the clamping force on both sides, thereby ensuring the stability of the material during the experiment.

[0041] A gear 2 1023 is rotatably installed inside the through slot 2 1015, a through slot 3 1018 is opened inside the external frame 1011, a tooth plate 3 1026 is movably connected inside the through slot 3 1018, a contact head 1027 is fixedly installed at one end of the tooth plate 3 1026, a grounding wire 1028 is fixedly connected to the bottom surface of the tooth plate 3 1026, and the tooth plate 2 1024 and the tooth plate 3 1026 are both meshed with the gear 2 1023.

[0042] During operation, after the voltage breakdown test is completed, the electric telescopic rod 9 can be used to drive the top plate 1009 to move upward, so that the experimental materials clamped between the negative plate 16 and the positive plate 17 lose their limit, which is convenient for subsequent removal. In this process, the top plate 1009 can drive the connecting plate 1014 to move during the upward movement, so that the movable clamping block 1012 moves toward the direction of the vertical plate 1005, thereby increasing the angle between the connecting plate 1014 and the external frame 1011, thereby driving the movable clamping block 1012 to move inside the external frame 1011 toward the direction of the vertical plate 1005, and then driving the tooth plate 1022 to move toward the direction of the vertical plate 1005. At this time, under the action of the gear 1021, the tooth plate 1024 can move toward the movable clamping block 1012, so that the contact plate 1025 is away from both sides of the experimental material, which is convenient for subsequent taking and placing of the experimental material, and when the tooth plate 2 1024 moves toward the direction of the movable clamping block 1012, it can drive the gear 2 1023 to rotate, and then drive the tooth plate 3 1026 to move in the direction of the material, until the contact head 1027 at one end of the tooth plate 3 1026 contacts the outer surface of the experimental material, thereby transmitting the residual electricity on the outer surface of the material through the contact head 1027 to the tooth plate 3 1026, and finally discharged through the grounding wire 1028 for release, thereby achieving the purpose of automatically releasing the residual electricity on the outer surface of the material after the experiment, so that subsequent experimenters can avoid residual electricity on the material when taking the material after the test, thereby ensuring the safety of the experimenters when taking the material after the test, thereby greatly ensuring the safety of the experimenters.

[0043] The static elimination component 11 includes a cylinder 1101, which is fixedly mounted inside the base 1002. Two sealing clamping plates 1102 are movably clamped inside the cylinder 1101. The static elimination component 11 is used to eliminate static electricity on the surface of experimental materials.

[0044] A connecting rod 1105 is fixedly connected to the surface of one side of the sealing clamping plate 1102, and a cavity 1104 is isolated between the two sealing clamping plates 1102. Two cavities 1103 are isolated from the inner walls of the two sides of the cylinder 1101 by the two sealing clamping plates 1102. A connecting rod 1105 is fixedly connected to the surface of one side of the sealing clamping plate 1102, and one end of the connecting rod 1105 extends to the outside of the cylinder 1101. A clamping rod 1106 is movably connected to the inside of the through groove 3 1018, and one end of the clamping rod 1106 is fixedly connected to the bottom surface of the movable clamping block 1012. The end of the connecting rod 1105 extending to the inside of the cylinder 1101 is fixedly connected to the clamping rod One side surface of 1106 is fixedly connected, a storage box 1113 is fixedly installed inside the experimental main machine 2, a suction pipe 1116 is fixedly connected between the cylinder 1101 and the storage box 1113, a one-way valve 1117 is fixedly installed on the outer surface of the suction pipe 1116, a discharging rack 1118 is fixedly installed on the bottom surface of the top plate 1006, a discharging nozzle 1119 is fixedly connected to one side surface of the discharging rack 1118, a delivery pipe 1107 is fixedly connected to the outer surface of the cylinder 1101, a one-way valve 1108 is fixedly installed on the outer surface of the delivery pipe 1107, and one end of the delivery pipe 1107 is fixedly connected to one side surface of the discharging nozzle 1119.

[0045] During operation, when the material is clamped, that is, when the movable clamping block 1012 moves in a direction away from the vertical plate 1005, it can synchronously drive the clamping rod 1106 to move, so that the sealing clamping plate 1102 can be driven to move inside the cylinder 1101 through the connecting rod 1105, and the cavity 1103 is squeezed, and the carbon black powder inside the cavity 1103 is squeezed into the inside of the conveying pipe 1107, and then conveyed by the conveying pipe 1107, and finally through the discharge rack 1118 and the discharge nozzle 1119 is sprayed toward the material to be tested, and the carbon black powder can effectively neutralize the static electricity on the surface of the material, thereby eliminating the static electricity and reducing the impact of static electricity, thereby achieving the purpose of eliminating the static electricity on the outer surface of the material to be tested and improving the stability during subsequent experiments. Moreover, when the movable clamping block 1012 moves toward the direction of the vertical plate 1005, the carbon black powder inside the storage box 1113 can be re-sucked into the interior of the cavity 1103 through the suction pipe 1116, so as to facilitate the use of the next material.

[0046] A suction rack 1112 is fixedly installed on the top surface of the prevention plate 1003, a return pipe 1110 is fixedly connected to one side surface of the suction rack 1112, a one-way valve 1111 is fixedly installed on the outer surface of the return pipe 1110, one end of the one-way valve 1111 extends to the interior of the second cavity 1104, a connecting pipe 1114 is fixedly connected between the second cavity 1104 and the storage box 1113, and a one-way valve 3 1115 is fixedly connected to the outer surface of the connecting pipe 1114.

[0047] During operation, when the sealing clamping plate 1102 moves toward the inner walls on both sides of the cylinder 1101, suction can be generated, thereby re-sucking the scattered carbon black powder sprayed out by the discharge rack 1118 and the discharge nozzle 1119 into the interior of the second cavity 1104. On the one hand, it can clean the carbon black powder, and on the other hand, it can recover the excess carbon black powder to prevent the sprayed carbon black powder from accumulating on the outer surface of the material, thereby affecting the accuracy of the test data. In addition, after the carbon black powder enters the interior of the second cavity 1104, it will be properly stored, and during the upward movement of the top plate 1009, the carbon black powder collected in the second cavity 1104 will be discharged into the interior of the storage box 1113 through the connecting pipe 1114 for unified collection.

[0048] A suction frame 12 is fixedly installed on the inner wall of the experimental host 2, and a plurality of suction grooves 13 are opened on one side surface of the suction frame 12, and the plurality of suction grooves 13 are evenly spaced on one side surface of the suction frame 12; a suction fan 14 is fixedly installed on the rear surface of the host case 1, and a connecting pipe 15 is fixedly connected to the suction end of the suction fan 14, and one end of the connecting pipe 15 is fixedly connected to the suction frame 12, and an air outlet end of the suction fan 14 is connected to an external pipeline; a timing switch 20 is fixedly installed on the inner wall of one side of the external frame 1011, a touch rod 19 is fixedly connected to the surface of one side of the movable card block 1012, and a timing switch 18 is fixedly connected to the top surface of the top plate 1006, and the timing switch 18 and the timing switch 20 are both electrically connected to the suction fan 14.

[0049] During operation, when the top plate 1009 moves downward, that is, when the material is tightly clamped, the movement of the movable clamping block 1012 causes the touch rod 19 to move and touch the timing switch 20, thereby starting the suction fan 14, and then generating suction, which can suck a part of the carbon black powder sprayed and scattered in the air into the connecting pipe 15 through the suction frame 12, and finally discharge it to the outside, thereby achieving the purpose of further discharging the excess carbon black powder from the inside of the test box 4, and until the top plate 1009 moves and touches the timing switch 18, the suction fan 14 can be turned off to avoid the suction fan 14 from starting during the experiment, and when the experiment is completed, that is, when the top plate 1009 moves upward, the touch rod 19 can be moved away from the timing switch 20, at this time the timing switch 20 can start the suction fan 14 at a fixed time, and can discharge the harmful gas generated in the test box 4 due to the breakdown test to the outside, thereby further improving the safety of the experimenters, and, after a period of time, the suction fan 14 is turned off.

[0050] Specifically, the working process or working principle of this stepless voltage regulation voltage breakdown tester is as follows: when in use, during the experiment, first place the material to be tested on the top surface of the prevention plate 1003, and above the negative plate 16, and then control the electric telescopic rod 9 to start. During the start-up of the electric telescopic rod 9, it can drive the top plate 1009 to move downward, that is, drive the card plate 1008 to move downward inside the through groove 1007. During the movement, the pressure plate 1010 below the card plate 1008 is driven to move downward, that is, drive the positive plate 17 below the pressure plate 1010 to move toward the material to be tested, until the material to be tested is stably clamped between the negative plate 16 and the positive plate 17, and the stable clamping of the material can be completed. Then, the experimental voltage is set through the control panel 3 to realize the voltage breakdown test of the material between the negative plate 16 and the positive plate 17, so that the material is under the voltage During the breakdown test, the material to be tested can be stably clamped. During the experiment, the material to be tested is first placed on the top surface of the prevention plate 1003 and above the negative plate 16. Then, the electric telescopic rod 9 is controlled to start. During the start-up of the electric telescopic rod 9, the top plate 1009 can be driven to move downward, that is, the card plate 1008 is driven to move downward inside the through groove 1007. During the movement, the pressure plate 1010 below the card plate 1008 is driven to move downward, that is, the positive plate 17 below the pressure plate 1010 is driven to move toward the material to be tested, until the material to be tested is stably clamped between the negative plate 16 and the positive plate 17. The stable clamping of the material can be completed. Then, the experimental voltage is set through the control panel 3 to realize the voltage breakdown test of the material between the negative plate 16 and the positive plate 17, so that the material can be stably clamped during the voltage breakdown test.

[0051] In the process of the top plate 1009 moving upward, the connecting plate 1014 can be driven to move, so that the movable clamping block 1012 moves toward the direction of the vertical plate 1005, so that the angle between the connecting plate 1014 and the external frame 1011 becomes larger, and then the movable clamping block 1012 is driven to move in the direction of the vertical plate 1005 inside the external frame 1011, and then the tooth plate 1022 is driven to move in the direction of the vertical plate 1005. At this time, under the action of the gear 1021, the tooth plate 1024 can move in the direction of the movable clamping block 1012, so that the contact plate 1025 It is far away from both sides of the experimental material, which is convenient for the subsequent taking and placing of the experimental material. Moreover, when the tooth plate 2 1024 moves toward the direction of the movable clamping block 1012, it can drive the gear 2 1023 to rotate, and then drive the tooth plate 3 1026 to move toward the direction of the material, until the contact head 1027 at one end of the tooth plate 3 1026 contacts the outer surface of the experimental material, thereby transmitting the residual electricity on the outer surface of the material through the contact head 1027 to the tooth plate 3 1026, and finally discharged through the grounding wire 1028 for release, thereby achieving the purpose of automatically releasing the residual electricity on the outer surface of the material after the experiment.

Claims

1. A stepless voltage regulation type voltage breakdown tester, comprising a mainframe (1), a test mainframe (2) being fixedly mounted on the top surface of the mainframe (1), a control panel (3) being arranged on the front surface of the test mainframe (2), and a test box (4) being fixedly mounted inside the test mainframe (2), characterized in that: An electric telescopic rod (9) is fixedly mounted on the internal top surface of the test box (4), a positioning clamping assembly (10) is arranged inside the test box (4), and a static elimination assembly (11) is arranged inside the test box (4); The positioning and clamping assembly (10) comprises a bottom plate (1001), the bottom plate (1001) is fixedly mounted on the inner bottom surface of the test box (4), a base (1002) is fixedly mounted on the top surface of the bottom plate (1001), a prevention plate (1003) is fixedly mounted on the top surface of the base (1002), a negative electrode plate (16) is mounted in the middle of the top surface of the prevention plate (1003), and the positioning and clamping assembly (10) is used for clamping the test material and discharging it after detection; The static elimination component (11) comprises a cylinder (1101), the cylinder (1101) is fixedly mounted inside the base (1002), two sealing clamping plates (1102) are movably clamped inside the cylinder (1101), and the static elimination component (11) is configured to eliminate static electricity on the surface of experimental materials; Two vertical plates (1005) are fixedly mounted on the top surface of the prevention plate (1003), and through grooves (1015) are provided on one side of the two vertical plates (1005). A top plate (1006) is fixedly mounted on the top of the vertical plate (1005), and two through grooves (1007) are provided on the top surface of the top plate (1006). A clamping plate (1008) is movably clamped inside the two through grooves (1007). A pressure plate (1010) is fixedly mounted on the bottom end of the clamping plate (1008), and a positive electrode plate (17) is mounted on the middle of the bottom surface of the pressure plate (1010). A top plate (1009) is fixedly mounted on the top of the clamping plate (1008), and the output end of the electric telescopic rod (9) is fixedly connected to the top surface of the top plate (1009). An external frame (1011) is fixedly mounted on one side of the vertical plate (1005); a movable clamping block (1012) is movably clamped inside the external frame (1011); a round shaft (1013) is fixedly mounted on both sides of the movable clamping block (1012); a positioning shaft (1016) is fixedly mounted between the two clamping plates (1008); an outer sleeve (1017) is rotatably mounted on the outer surface of the positioning shaft (1016); and a connecting plate (1014) is connected between the round shaft (1013) and the outer sleeve (1017); An I-shaped frame (1019) is fixedly installed inside the external frame (1011), a plug-in shaft (1020) is fixedly installed inside the I-shaped frame (1019), a tooth plate 2 (1024) and a tooth plate 1 (1022) are respectively clamped inside the I-shaped frame (1019), the tooth plate 2 (1024) and the tooth plate 1 (1022) are arranged opposite to each other and are both meshed with the gear 1 (1021), one end of the tooth plate 1 (1022) is fixedly connected to a side surface of the movable clamping block (1012), and one end of the tooth plate 2 (1024) is fixedly connected to a contact plate (1025); The second through slot (1015) is internally rotatably mounted with a second gear (1023); the external frame (1011) is internally provided with a third through slot (1018); the third through slot (1018) is internally movably engaged with a third toothed plate (1026); a contact head (1027) is fixedly mounted on one end of the third toothed plate (1026); a grounding wire (1028) is fixedly connected to the bottom surface of the third toothed plate (1026); the second toothed plate (1024) and the third toothed plate (1026) are both meshed with the second gear (1023); A connecting rod (1105) is fixedly connected to the surface of one side of the sealing clamping plate (1102), a cavity two (1104) is isolated between the two sealing clamping plates (1102), and two cavities one (1103) are isolated from the inner walls of the two sides of the cylinder (1101) by the two sealing clamping plates (1102), and a connecting rod (1105) is fixedly connected to the surface of one side of the sealing clamping plate (1102), one end of the connecting rod (1105) extends to the outside of the cylinder (1101), and a clamping rod (1106) is movably clamped inside the through groove three (1018), and one end of the clamping rod (1106) is fixedly connected to the bottom surface of the movable clamping block (1012), and one end of the connecting rod (1105) extending to the inside of the cylinder (1101) is fixedly connected to the surface of one side of the clamping rod (1106); A material storage box (1113) is fixedly installed inside the experimental main machine (2), a suction pipe (1116) is fixedly connected between the cylinder (1101) and the material storage box (1113), a one-way valve (1117) is fixedly installed on the outer surface of the suction pipe (1116), a discharge rack (1118) is fixedly installed on the bottom surface of the top plate (1006), a discharge nozzle (1119) is fixedly connected to one side surface of the discharge rack (1118), a delivery pipe (1107) is fixedly connected to the outer surface of the cylinder (1101), a one-way valve (1108) is fixedly installed on the outer surface of the delivery pipe (1107), and one end of the delivery pipe (1107) is fixedly connected to one side surface of the discharge nozzle (1119).

2. A stepless voltage regulation type voltage breakdown tester according to claim 1, characterized in that: A suction rack (1112) is fixedly installed on the top surface of the prevention plate (1003), a return pipe (1110) is fixedly connected to one side surface of the suction rack (1112), a check valve 2 (1111) is fixedly installed on the outer surface of the return pipe (1110), one end of the check valve 2 (1111) extends to the interior of cavity 2 (1104), a connecting pipe (1114) is fixedly connected between cavity 2 (1104) and the material storage box (1113), and a check valve 3 (1115) is fixedly connected to the outer surface of the connecting pipe (1114).

3. A stepless voltage regulation type voltage breakdown tester according to claim 2, characterized in that: An air suction frame (12) is fixedly mounted on the inner wall of the experimental mainframe (2), a plurality of air suction grooves (13) are provided on one side surface of the air suction frame (12), and the plurality of air suction grooves (13) are evenly spaced on one side surface of the air suction frame (12). A suction fan (14) is fixedly mounted on the rear surface of the mainframe box (1), a connecting pipe (15) is fixedly connected to the air suction end of the suction fan (14), one end of the connecting pipe (15) is fixedly connected to the air suction frame (12), and an air outlet end of the suction fan (14) is connected to an external pipeline.

4. A stepless voltage regulation type voltage breakdown tester according to claim 3, characterized in that: A second timing switch (20) is fixedly mounted on an inner wall of one side of the external frame (1011), a contact rod (19) is fixedly connected to a surface of one side of the movable clamping block (1012), and a first timing switch (18) is fixedly connected to the top surface of the first top plate (1006), and both the first timing switch (18) and the second timing switch (20) are electrically connected to the suction fan (14).

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