Capacitor withstand voltage test device

Abstract

The utility model provides a capacitor withstand voltage test device, which relates to the field of capacitor withstand voltage test and comprises a base and a device frame, a liquid storage cavity is arranged in the base, a submersible pump is arranged on the inner side of the liquid storage cavity, the output end of the submersible pump is connected with a water inlet pipe, and the device frame is connected to the upper side of the base. A clamping assembly is arranged on the inner side of the device frame and connected with the water inlet pipe, the clamping assembly is slidably connected to the upper side of the base, an electric push rod is connected to the outer side of the clamping assembly, a lifting plate is arranged on the inner side of the device frame, a double-shaft motor is arranged on the lower side of the lifting plate, and clamping blocks are arranged on the two sides of the double-shaft motor. The opposite sides of the clamping blocks are respectively provided with a conducting strip and a buffer block, and the upper side of the conducting strip is connected with a withstand voltage tester through a wire. According to the utility model, the electric connection effect of the capacitor is stabilized, the surface temperature of the capacitor can be reduced during testing, and the capacitor can be taken out conveniently after testing.

Description

TECHNICAL FIELD

[0001] The utility model relates to capacitor voltage withstanding test technical field, specifically relates to a capacitor voltage withstanding test device. BACKGROUND

[0002] Capacitors can be divided into ceramic capacitors, mica capacitors, glass film capacitors, polyester capacitors, glass glaze capacitors and the like, among which ceramic capacitors are widely used in recent years due to the advantages of higher use temperature, larger specific capacity, better moisture resistance, smaller dielectric loss, and capacitor temperature coefficient that can be selected in a large range, etc. After the production of capacitors, they often need to be tested for voltage resistance.

[0003] After searching, the prior art (publication number: CN214041628U) records "a capacitor voltage withstanding test device, including shell, the lower middle part of the inner wall of shell is provided with a storage groove, two limit plates are welded in the shell inside and located on the left and right sides of the storage groove, clamping blocks are arranged on the left and right sides between the two limit plates, springs are fixed between the outer end surface of the clamping block and the inner surface of the adjacent limit plate, fixed frames are fixed on the left and right sides of the lower inner wall of the shell and located outside the limit plate, a through hole is formed in the middle of the top end of the fixed frame, a plug rod penetrates through the through hole, a moving plate is arranged inside the shell, a cylinder is connected to the upper inner wall of the shell and located above the moving plate, and a test block is fixed to the bottom end of the moving plate. The utility model has the advantages that: it is convenient to quickly clamp and install capacitors of various sizes, the conductive sheet can be adjusted in position according to the size of the capacitor, and the adjustment method is simple and accurate in position."

[0004] Although the capacitor voltage withstanding test device in the prior art can adjust the size of different capacitors, there are still some deficiencies: the conductive sheet of the existing capacitor voltage withstanding test device directly contacts the lead-out point of the capacitor, which may result in loose contact and virtual connection, thereby increasing the test resistance and causing inaccurate testing. In addition, capacitors with high internal resistance may have a high surface temperature during voltage testing, which may cause overheating, or the capacitor may not pass the voltage resistance test, resulting in breakdown and damage, and thus causing burns when directly contacting and removing. UTILITY MODEL CONTENTS

[0005] In order to overcome the defects of the prior art, a capacitor voltage withstanding test device is provided to solve the problems raised in the background art.

[0006] In order to achieve the above object, provide a kind of capacitor withstand voltage testing device, comprising: base and device frame, the inside of the base is provided with liquid storage cavity, and the inside of liquid storage cavity is equipped with submersible pump, and the output end of submersible pump is connected with water inlet pipe, the upper side of base is connected with device frame, and the inside of device frame is equipped with clamping assembly, and clamping assembly is connected with water inlet pipe, the upper side of base is slidably connected with clamping assembly, and the outside of clamping assembly is connected with electric push rod, the inside of device frame is equipped with lifting plate, and the lower side of lifting plate is equipped with double-shaft motor, and the two sides of double-shaft motor are equipped with clamping block, while the opposite side of clamping block is respectively equipped with conducting sheet and buffer block, and the upper side of conducting sheet is connected with withstand voltage tester by wire.

[0007] Further, the upper side of the base is provided with a placing groove, and the bottom of the inner side of the placing groove is provided with a buffer pad.

[0008] Further, the clamping assembly includes a cavity plate, and the inner side end of the cavity plate is connected with a cooling plate, and the inner side upper end of the cavity plate is provided with an inclined baffle, and the inner side end face of the cooling plate is provided with a heat conducting plate.

[0009] Further, the upper end of the cavity plate is provided with a water inlet hole, and the lower side of the cavity plate is provided with a backwater hole, and the water inlet hole is connected with the water inlet pipe through the water inlet hose, and the backwater hole is connected to the liquid storage cavity through the backwater hose.

[0010] Further, the two ends of the lifting plate are slidably connected with guide rods, and the upper ends of the guide rods are fixed to the top of the device frame, and the withstand voltage tester is installed in the mounting bracket on the upper side of the lifting plate, and the upper side of the mounting bracket is connected with an air cylinder.

[0011] Further, the two sides of the double-shaft motor are connected with double-threaded screw rods, and the outer side of the double-threaded screw rod is screwed with a screw plate, and the clamping block is connected to the lower end of the screw plate.

[0012] Further, the lower end of the clamping block is provided with a laser lamp, and the light emitting end of the laser lamp is vertically downward.

[0013] The beneficial effects of the present application are as follows:

[0014] 1, when using, first, the capacitor is placed in the placing groove on the base, then the electric push rod is started to drive the clamping assembly to clamp it, at this time, the cooling liquid is injected into the cavity plate and the cooling plate through the submersible pump, the water inlet pipe and the water inlet hose, and the cooling liquid is converged through the backwater hose, then during the testing process by the withstand voltage tester, the heat generated by the capacitor is cooled by the cooling liquid inside the heat conducting plate, so that the temperature of the surface of the capacitor can be reduced after testing, and then it can be directly taken out after the clamping assembly is opened, avoiding burns, and there is no need to wait for natural cooling, improving the testing efficiency;

[0015] 2, after the capacitor is clamped and fixed, at this time, the double-shaft motor is started to drive the double-threaded screw rod, so that the clamping block is driven to move through the screw plate, and then the laser lamp is driven to move, so that the light emitted downward by the laser lamp approaches the outgoing power terminal at the upper end of the capacitor, then the cylinder is started again to drive the lifting plate to move downward, until the clamping block is located outside the outgoing power terminal of the capacitor, then the double-shaft motor is started again to drive the clamping block to move close, and then the conductive sheet and the buffer block clamp the power terminal of the capacitor, so that the stable conductive connection effect is realized, and the virtual connection is avoided to generate additional resistance to cause inaccurate test. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view and a partial sectional view structural schematic diagram of the embodiment of the utility model.

[0017] Figure 2 It is a front view and a partial sectional view structural schematic diagram of the embodiment of the utility model. Figure 1 It is a structure schematic diagram of A in the embodiment of the utility model.

[0018] Figure 3 It is a structure schematic diagram of B in the embodiment of the utility model. Figure 1 It is a structure schematic diagram of B in the embodiment of the utility model.

[0019] Figure 4 It is a three-dimensional structure schematic diagram of the clamping assembly of the embodiment of the utility model.

[0020] Figure 5 It is a sectional structure schematic diagram of the clamping assembly of the embodiment of the utility model.

[0021] In the figure: 1, base; 11, liquid storage cavity; 12, submersible pump; 13, water inlet pipe; 131, water inlet hose; 14, water return hose; 15, buffer pad; 16, placing groove; 2, device frame; 3, electric push rod; 4, clamping assembly; 41, cavity plate; 411, water inlet hole; 412, baffle; 413, water return hole; 42, cooling plate; 421, heat conduction plate; 5, lifting plate; 6, double-shaft motor; 61, double-threaded screw rod; 62, screw plate; 63, clamping block; 64, laser lamp; 65, conductive sheet; 66, buffer block; 7, voltage withstand tester; 8, cylinder; 9, guide rod. DETAILED DESCRIPTION

[0022] Reference Figures 1 to 5The utility model provides a kind of capacitor withstand voltage testing device, comprising: base 1 and device frame 2, the inside of base 1 is equipped with liquid storage cavity 11, and the inside of liquid storage cavity 11 is equipped with submersible pump 12, and the output of submersible pump 12 is connected with water inlet pipe 13, the upside of base 1 is equipped with placing groove 16, and the inside groove bottom of placing groove 16 is equipped with buffer pad 15, device frame 2 is connected in the upside of base 1, and the inside of device frame 2 is equipped with clamping assembly 4, and clamping assembly 4 is connected with water inlet pipe 13, clamping assembly 4 is slidingly connected in the upside of base 1, and the outside of clamping assembly 4 is connected with electric push rod 3, the inside of device frame 2 is equipped with lifting plate 5, and the downside of lifting plate 5 is equipped with double-shaft motor 6, and the two sides of double-shaft motor 6 are equipped with clamping block 63, while the opposite side of clamping block 63 is equipped with conducting strip 65 and buffer block 66 respectively, and the upside of conducting strip 65 is connected with withstand voltage tester 7 by wire, the two sides of double-shaft motor 6 are connected with double screw thread screw rod 61, and the outside of double screw thread screw rod 61 is screwed with screwing plate 62, and clamping block 63 is connected in the lower end of screwing plate 62, the lower end of clamping block 63 is equipped with laser lamp 64, and the light emission end of laser lamp 64 is vertically downward, the two ends of lifting plate 5 are slidingly connected with guide rod 9, and the top of device frame 2 is fixed in the upper end of guide rod 9, and withstand voltage tester 7 is installed in the mounting bracket on the upside of lifting plate 5, while the upside of mounting bracket is connected with pneumatic cylinder 8.

[0023] Specifically, cooling liquid is arranged in the inside of liquid storage cavity 11, and the cooling liquid is submerged in the submersible pump 12, and the output of the submersible pump 12 is connected with two water inlet pipes 13 through a tee.

[0024] Specifically, the upper end of the water inlet pipe 13 extends to the upper end of the base 1, and is located outside the placing groove 16.

[0025] Specifically, the device frame 2 includes side plates on both sides, and a top plate connected to the upper end of the side plates, and the electric push rod 3 is symmetrically and horizontally installed on the side plates of the device frame 2.

[0026] Specifically, two groups of clamping blocks 63 are arranged on one side of the double-shaft motor 6, which facilitates clamping of the two electrical terminals on the capacitor.

[0027] Specifically, a guide sliding groove is formed in the lower end surface of the lifting plate 5 and on both sides of the double-shaft motor 6, and the upper end of the screwing plate 62 is slidingly connected in the guide sliding groove.

[0028] As a preferred embodiment, the guide rod 9 is provided to enable the lifting plate 5 to move up and down in the vertical direction under the drive of the pneumatic cylinder 8.

[0029] As Figure 3 , Figure 4 and Figure 5In the clamping assembly 4, there is a cavity plate 41, and a cooling plate 42 is connected to the inner end of the cavity plate 41. An inclined baffle 412 is provided on the upper inner side of the cavity plate 41. A heat-conducting plate 421 is provided on the inner end face of the cooling plate 42. A water inlet hole 411 is provided on the upper end of the cavity plate 41, and a water return hole 413 is provided on the lower side of the cavity plate 41. The water inlet hole 411 is connected to the water inlet pipe 13 through a water inlet hose 131, and the water return hole 413 is connected to the liquid storage chamber 11 through a water return hose 14.

[0030] Specifically, the inner cavities of the cavity plate 41 and the cooling plate 42 are connected, and the lower end of the baffle 412 faces downward toward the heat conduction plate 421, but does not contact the heat conduction plate 421. This allows the coolant flowing in through the water inlet 411 to flow through the baffle 412 to the inner end face of the heat conduction plate 421, thereby cooling the heat conduction plate 421. Furthermore, the heat conduction plate 421 is made of graphene thermal conductive material, and a layer of thermal conductive silicone grease is provided on the outside of the graphene to achieve insulated contact with the capacitor.

[0031] In use, first place the capacitor in the placement slot on the base, then activate the electric actuator to drive the clamping assembly to clamp it. At this time, coolant is injected into the cavity plate and cooling plate through the submersible pump, water inlet pipe and water inlet hose, and the coolant is collected through the return hose. During the withstand voltage test, the heat generated by the capacitor is cooled by the coolant on the inside of the heat-conducting plate, which reduces the surface temperature of the capacitor after the test. After the capacitor is clamped and fixed, activate the dual-axis motor to drive the dual-thread screw, which moves the clamping block through the screw plate, thereby moving the laser lamp. The laser light emitted downward approaches the lead-out terminal at the top of the capacitor. Then, activate the cylinder to drive the lifting plate to move downward until the clamping block is outside the capacitor's lead-out terminal. Then, activate the dual-axis motor again to drive the clamping block to move closer, so that the conductive plate and buffer block clamp the capacitor's lead-out terminal.

[0032] The capacitor withstand voltage testing device of this invention can effectively solve the problems mentioned in the background technology. It achieves a stable electrical connection effect on the capacitor based on the existing capacitor withstand voltage testing device technology, and can reduce the surface temperature of the capacitor during testing, making it easier to remove the capacitor after testing.

Claims

1. A capacitor withstand voltage testing device, comprising: The base (1) and the device frame (2) are characterized in that: the base (1) has a liquid storage chamber (11) inside, and a submersible pump (12) is provided inside the liquid storage chamber (11), and the output end of the submersible pump (12) is connected to a water inlet pipe (13); the device frame (2) is connected to the upper side of the base (1), and a clamping assembly (4) is provided inside the device frame (2), and the clamping assembly (4) is connected to the water inlet pipe (13); the clamping assembly (4) is slidably connected to the upper side of the base (1), and an electric push rod (3) is connected to the outer side of the clamping assembly (4); a lifting plate (5) is provided inside the device frame (2), and a dual-axis motor (6) is provided on the lower side of the lifting plate (5), and clamping blocks (63) are provided on both sides of the dual-axis motor (6); at the same time, a conductive sheet (65) and a buffer block (66) are respectively provided on the opposite side of the clamping block (63), and a withstand voltage tester (7) is connected to the upper side of the conductive sheet (65) through a wire.

2. The capacitor withstand voltage testing device according to claim 1, characterized in that, The base (1) has a placement groove (16) on its upper side, and a buffer pad (15) is provided at the bottom of the inner side of the placement groove (16).

3. The capacitor withstand voltage testing device according to claim 1, characterized in that, The clamping assembly (4) includes a cavity plate (41), and a cooling plate (42) is connected to the inner end of the cavity plate (41). An inclined baffle (412) is provided on the upper inner end of the cavity plate (41), and a heat-conducting plate (421) is provided on the inner end face of the cooling plate (42).

4. The capacitor withstand voltage testing device according to claim 3, characterized in that, The cavity plate (41) has a water inlet hole (411) at its upper end and a water return hole (413) at its lower side. The water inlet hole (411) is connected to the water inlet pipe (13) through a water inlet hose (131), and the water return hole (413) is connected to the liquid storage chamber (11) through a water return hose (14).

5. The capacitor withstand voltage testing device according to claim 1, characterized in that, The lifting plate (5) is slidably connected to both ends of a guide rod (9), and the upper end of the guide rod (9) is fixed to the top of the device frame (2). The pressure tester (7) is installed in the mounting frame on the upper side of the lifting plate (5), and a cylinder (8) is connected to the upper side of the mounting frame.

6. The capacitor withstand voltage testing device according to claim 1, characterized in that, The dual-axis motor (6) is connected to two sides by a double-threaded screw (61), and a screw plate (62) is screwed to the outer side of the double-threaded screw (61), and a clamping block (63) is connected to the lower end of the screw plate (62).

7. The capacitor withstand voltage testing device according to claim 1, characterized in that, A laser lamp (64) is installed at the lower end of the clamp (63), and the light emitting end of the laser lamp (64) is vertically downward.

Images