Insulator internal water pressure test device

Abstract

The invention discloses an insulator internal water pressure test device, which comprises a hydraulic machine main body, a supporting seat with a placing cavity, a moving plate, a sealing element and a first driving device, and is characterized in that the supporting seat is arranged on the moving plate, the sealing element is arranged on a pressing rod of the hydraulic machine main body, the pressing rod is provided with a water inlet hole, and the water inlet hole is connected with external water supply equipment; the water tank is arranged in the water tank; the piston assembly comprises a piston and a push rod, the piston is connected with the push rod, the piston can move in the containing cavity of the supporting base, and the push rod can slide in the sliding groove; the plurality of springs are arranged in the placing cavity of the supporting seat; the floating piece is placed in the water tank, and a plurality of through holes are formed in the floating piece; a second driving device; the device comprises a first sensor, a second sensor, a first time relay, a second time relay and a controller. According to the invention, after the insulator to be tested is placed on the supporting seat, the internal water pressure test can be carried out on the insulator without manually pressing the starting switch.

Description

Technical Field

[0001] The present invention relates to the technical field of insulator production, and in particular to a device for internal hydraulic pressure testing of insulators. Background Art

[0002] The main reason for conducting internal hydraulic pressure testing on insulators is to detect their airtightness and pressure resistance. Insulators play a role in isolating high-voltage electricity and supporting conductors in the power system, so their airtightness and pressure resistance are crucial. If there are airtightness problems with the insulators, it may lead to gas leakage, affecting their insulation effect; while insufficient pressure resistance may cause the insulators to rupture under high-voltage conditions, triggering power accidents. In the existing device for internal hydraulic pressure testing of insulators, each time a new insulator is tested, the start switch of the device needs to be pressed to conduct the test, which reduces the test efficiency. Moreover, when the support seat for placing the insulators is in long-term use, insulator fragments will accumulate in its placement cavity and need to be cleaned regularly, which has deficiencies. Summary of the Invention

[0003] The purpose of the present invention is to solve the above technical problems and provide a device for internal hydraulic pressure testing of insulators.

[0004] The technical solution of the present invention: A device for internal hydraulic pressure testing of insulators, including a hydraulic press main body, a support seat provided with a placement cavity, a moving plate, a sealing member, and a first driving device. The support seat is arranged on the moving plate, and the first driving device is used to drive the moving plate to move back and forth on the hydraulic press main body. The sealing member is arranged on the pressure rod of the hydraulic press main body, and there is a water inlet hole on the pressure rod, which is connected to an external water supply device. The support seat is provided with a U-shaped water tank, a drain hole, and a sliding groove. The water tank communicates with the placement cavity of the support seat, the drain hole, and the sliding groove respectively. It further includes:

[0005] A filter screen, arranged at one end of the water tank;

[0006] A piston assembly, which includes a piston and a push rod. The piston is connected to the push rod, the piston can move in the placement cavity of the support seat, and the push rod can slide in the sliding groove;

[0007] Several springs, arranged in the placement cavity of the support seat;

[0008] A floating member, placed in the water tank, and there are several through holes on the floating member;

[0009] A second driving device, used to drive the piston rod to move upward;

[0010] A first sensor, a second sensor, a first time relay, a second time relay, and a controller.

[0011] Preferably, two cushion rods are provided on the hydraulic press main body at intervals.

[0012] Preferably, a protective cover is provided on the pressure rod.

[0013] Preferably, a vertical plate and an arc plate are provided on the moving plate, and the vertical plate and the arc plate are arranged at intervals.

[0014] Preferably, the first driving device includes a motor, a gear and a toothed plate. The motor is arranged on the hydraulic press main body, the gear is arranged on the output end of the motor, and the gear meshes with the toothed plate.

[0015] Preferably, the second driving device includes a magnet and an electromagnet. The magnet is arranged at the bottom of the push rod, and the electromagnet is arranged on the support seat.

[0016] Preferably, the second driving device further includes a plurality of elastic ropes, which are arranged in the placement cavity of the support seat and connected to the piston.

[0017] The beneficial effects of the present invention are as follows: In the present invention, after the insulator to be tested is placed on the support seat, the internal water pressure test of the insulator can be carried out without manually pressing the start switch, and the broken pieces of the insulator in the placement cavity of the support seat can be pushed out, avoiding damage caused by the contact between the head of the insulator and the broken pieces when placing the insulator to be tested subsequently. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front view of the overall structure of the preferred embodiment of the present invention;

[0019] Figure 2 is the top view of the overall structure of the preferred embodiment of the present invention;

[0020] Figure 3 is the top view of the support seat arranged on the moving plate in the preferred embodiment of the present invention;

[0021] Figure 4 is the schematic diagram of the first driving device in the preferred embodiment of the present invention;

[0022] Figure 5 is the test principle diagram of the present invention;

[0023] Figure 6 is Figure 5 the partial enlarged view at A in

[0024] Reference numerals: hydraulic press main body 10, pressure rod 101, water inlet hole 1011, protective cover 1012, cushion rod 102, support base 2, water tank 201, drain hole 202, sliding groove 203, moving plate 3, vertical plate 301, arc plate 302, seal 4, filter screen 5, piston 6, push rod 7, spring 8, floating member 9, first sensor 11, second sensor 12, motor 13, gear 14, toothed plate 15, magnet 16, electromagnet 17, elastic cord 18. Detailed implementation

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0026] Refer to Figures 1 to 6 , an internal water pressure test device for an insulator, including a hydraulic press main body 10, a support base 2 provided with a placement cavity, a moving plate 3, a seal 4 and a first driving device. The support base 2 is arranged on the moving plate 3. The first driving device is used to drive the moving plate 3 to move back and forth on the hydraulic press main body 10. The seal 4 is arranged on the pressure rod 101 of the hydraulic press main body 10. The pressure rod 101 is provided with a water inlet hole 1011, and the water inlet hole 1011 is connected to an external water supply device. The support base 2 is provided with a U-shaped water tank 201, a drain hole 202 and a sliding groove 203. The water tank 201 communicates with the placement cavity of the support base 2, the drain hole 202 and the sliding groove 203 respectively; further includes:

[0027] A filter screen 5, arranged at one end of the water tank 201;

[0028] A piston assembly, which includes a piston 6 and a push rod 7. The piston 6 is connected to the push rod 7. The piston 6 can move in the placement cavity of the support base 2, and the push rod 7 can slide in the sliding groove 203;

[0029] A plurality of springs 8, arranged in the placement cavity of the support base 2;

[0030] A floating member 9, placed in the water tank 201, and a plurality of through holes 901 are provided on the floating member 9;

[0031] A second driving device, used to drive the piston rod 6 to move upward;

[0032] The first sensor 11, the second sensor 12, the first time relay, the second time relay, and the controller. In the present invention, there is a certain amount of water in the water tank 201 and the chute 203. The insulator to be tested is placed upside down on the support base 2. After the head of the insulator is placed in the placement cavity of the support base 2, the bottom end of the head of the insulator contacts the piston 6 and exerts a downward thrust on it. The piston 6 moves downward in the placement cavity and compresses the spring 8. The water in the chute 203 is pushed by the push rod 7 into the water tank 201. The rising water level in the water tank 201 drives the floating member 9 to rise. When the first sensor 11 senses the floating member 9, it sends a signal to the controller to control the hydraulic press main body 10, the first driving device, the external water supply device, and the first time relay to work.

[0033] The first driving device works to drive the moving plate 3 to move leftward. Without manually pressing the start switch, when the support base 2 moves to directly below the pressure rod 101, the hydraulic press main body 10 works to drive the pressure rod 101 to move downward so that the sealing member 4 is in close contact with the inner wall of the insulator. The external water supply device works to pump high-pressure water into the water inlet hole 1011 and finally flow into the groove of the insulator head to conduct a withstand voltage test on the head of the porcelain part. When the first time relay reaches the preset value, it sends a signal to the controller. The controller controls the external water supply device to stop working, controls the hydraulic press main body 10 to work to drive the pressure rod 101 to move upward, and then controls the first driving device to work to drive the moving plate 3 to move rightward back to its original position. When the insulator breaks during the test, the water on the head of the insulator will flow into the placement cavity of the support base 2 and flow into the water tank 201 through the filter screen 5. The rising water level in the water tank 201 drives the floating member 9 to rise. When the second sensor 12 also senses the floating member 9, it sends a signal to the controller to control the second driving device and the second time relay to work. During the process of the moving plate 3 moving rightward back to its original position, the second driving device works to drive the piston 6 to move upward to push the broken pieces of the insulator in the placement cavity of the support base 2 upward, preventing accumulation in the placement cavity. When placing the insulator to be tested subsequently, the head of the insulator will abut against the broken pieces of the insulator, causing damage during the test. When the second time relay reaches the preset value, it sends a signal to the controller. The controller controls the second driving device not to work, and the piston 6 returns to its original position under the action of gravity. Specifically, the external water supply device is a pressure pump. Injecting water into the head of the insulator is prior art and will not be described here. The floating member 9 is square and can only move up and down in the water tank 201. When the device is not used for a long time, an appropriate amount of water can be added to the water tank 201 through the drain hole.

[0034] As a preferred embodiment of the present invention, it may further have the following additional technical features:

[0035] In this embodiment, two cushion rods 102 are provided at intervals on the hydraulic press main body 10. The moving plate 3 is on the two cushion rods 102 to reduce the friction of its movement.

[0036] In this embodiment, a protective cover 1012 is provided on the pressure rod 101 to prevent the broken insulator from flying out and hurting the staff during the insulator test.

[0037] In this embodiment, a vertical plate 301 and an arc plate 302 are provided on the moving plate 3. The vertical plate 301 and the arc plate 302 are arranged at intervals. After the broken insulator falls on the moving plate 3, the vertical plate 301 and the arc plate 302 are arranged at intervals, and the broken insulator can be swept out with a broom through the gap between the vertical plate 301 and the arc plate 302. Collection boxes are placed on both sides of the hydraulic press main body 10 to collect the swept-out broken insulators. Specifically, one end of the toothed plate 15 passes through the hydraulic press main body 10, and the other end is connected to the vertical plate 301 to facilitate driving the movement of the moving plate 3.

[0038] In this embodiment, the first driving device includes a motor 13, a gear 14, and a toothed plate 15. The motor 13 is arranged on the hydraulic press main body 10, the gear 14 is arranged on the output end of the motor 13, and the gear 14 meshes with the toothed plate 15. When the motor 13 works, it drives the gear 14 to rotate forward and backward, and then drives the toothed plate 15 to move back and forth, so that the moving plate 3 moves back and forth on the two cushion rods 102. Specifically, the motor 13 is electrically connected to the controller; the first driving device further includes a protective box 19, which is arranged on the hydraulic press main body 10, the motor 13 is arranged inside the protective box 19, and one end of the toothed plate 15 passes through the protective box 19.

[0039] In this embodiment, the second driving device includes a magnet 16 and an electromagnet 17. The magnet 16 is arranged at the bottom of the push rod 7, and the electromagnet 17 is arranged on the support seat 2. The controller controls the electromagnet 17 to work. When the electromagnet 17 is energized, it gives a repulsive force to the magnet 16 to make it move upward, driving the piston 6 to move upward to discharge the broken pieces of the insulator. When the second time relay reaches the preset value, it sends a signal to the controller, and the controller controls the magnet 16 to stop working, and the piston 6 returns to its original position under the action of gravity and contacts the spring 8.

[0040] In this embodiment, the second driving device further includes a plurality of elastic ropes 18, which are arranged in the placement cavity of the support seat 2 and connected to the piston 6 to prevent the piston 6 from moving upward and rushing out of the placement cavity of the support seat 2.

[0041] It should be noted that the term "including", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An insulator internal water pressure test device, comprising a hydraulic press body (10), a support seat (2) provided with a placement cavity, a movable plate (3), a sealing member (4) and a first driving device, wherein the support seat (2) is arranged on the movable plate (3), the first driving device is used to drive the movable plate (3) to move back and forth on the hydraulic press body (10), the sealing member (4) is arranged on a pressure rod (101) of the hydraulic press body (10), the pressure rod (101) is provided with a water inlet hole (1011), and the water inlet hole (1011) is connected to an external water supply device, characterized in that: The support seat (2) is provided with a U-shaped water trough (201), a drainage hole (202) and a slide groove (203), wherein the water trough (201) is respectively communicated with the placement cavity of the support seat (2), the drainage hole (202) and the slide groove (203); and further comprising: A filter screen (5) is arranged at one end of the water tank (201); A piston assembly, comprising a piston (6) and a push rod (7), wherein the piston (6) is connected to the push rod (7), the piston (6) can move in the placement cavity of the support seat (2), and the push rod (7) can slide in the slide groove (203); A plurality of springs (8) are arranged in the placement cavity of the support seat (2); A floating member (9) is placed in the water tank (201), and a plurality of through holes (901) are provided on the floating member (9); a second driving device, used for driving the piston rod (6) to move upward; A first sensor (11), a second sensor (12), a first time relay, a second time relay and a controller.

2. The insulator internal water pressure test device according to claim 1, characterized in that: Two spacer rods (102) are arranged on the hydraulic press body (10) at intervals.

3. The insulator internal water pressure test device according to claim 1, characterized in that: The pressure rod (101) is provided with a protective cover (1012).

4. The insulator internal water pressure test device according to claim 1, characterized in that: The movable plate (3) is provided with a vertical plate (301) and an arc-shaped plate (302), and the vertical plate (301) and the arc-shaped plate (302) are arranged at intervals.

5. The insulator internal water pressure test device according to claim 1, characterized in that: The first driving device comprises a motor (13), a gear (14) and a toothed plate (15); the motor (13) is arranged on the hydraulic press body (10); the gear (14) is arranged on the output end of the motor (13); and the gear (14) is meshed with the toothed plate (15).

6. The insulator internal water pressure test device according to claim 1, characterized in that: The second driving device comprises a magnet (16) and an electromagnet (17), wherein the magnet (16) is arranged at the bottom of the push rod (7), and the electromagnet (17) is arranged on the support seat (2).

7. The insulator internal water pressure test device according to claim 6, characterized in that: The second driving device also includes a plurality of elastic ropes (18), which are arranged in the placement cavity of the support seat (2) and connected to the piston (6).

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