CN216646120U

CN216646120U - Continuous water pressure circulation testing machine for hollow composite insulator

Info

Publication number: CN216646120U
Application number: CN202123408507.5U
Authority: CN
Inventors: 刘清宝; 黄源; 毛瑞; 伊肖东; 杨丁丁
Original assignee: Zibo Qianheng Automation Engineering Co ltd; Shandong Lutian Testing Technology Co ltd
Current assignee: Zibo Qianheng Automation Engineering Co ltd; Shandong Lutian Testing Technology Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-31
Anticipated expiration: 2031-12-31

Abstract

A continuous water pressure cycle testing machine for a hollow composite insulator belongs to the field of composite insulator performance testing equipment. The method is characterized in that: the testing device is provided with a testing unit (6), and a testing mechanism is arranged in a testing cavity; the water tank (2) and the main control console (1) are arranged on one side of the testing unit (6), the testing pipeline and the controller are arranged in the main control console (1), the water tank (2) is connected with the testing pipeline in the main control console (1) through a pipeline, the testing pipelines in the water tank (2) and the main control console (1) are respectively connected into the testing unit (6) through pipelines, and the testing mechanism in the testing unit (6) is connected into an inner cavity of a testing sample (9). In this hollow composite insulator lasts water pressure cycle testing machine, through setting up the test unit who is used for placing the test sample to through setting up water tank and the master control platform that links to each other with the test sample, realized the water pressure test to the test sample, simplified the structure greatly, improved the integrated level of whole device.

Description

Continuous water pressure circulation testing machine for hollow composite insulator

Technical Field

A continuous water pressure cycle testing machine for a hollow composite insulator belongs to the field of composite insulator performance testing equipment.

Background

The hollow composite insulator is a common electrical element and plays an important role in overhead transmission lines. When the hollow composite insulator is used, the water pressure in the hollow composite insulator needs to be detected. The purpose of performing internal water pressure detection on the hollow composite insulator is to perform withstand voltage detection on the hollow composite insulator by taking water as a medium, so that defective products are prevented from flowing into the next procedure. At present, the device for carrying out water pressure test on the hollow composite insulator generally has the defects of single function and complicated structure of the whole device, so that the conventional testing machine generally has the defect of low integration level.

Disclosure of Invention

The technical problem to be solved by the utility model is as follows: the hollow composite insulator continuous hydraulic pressure circulation testing machine overcomes the defects of the prior art, provides a testing unit used for placing a testing sample through arrangement, realizes the hydraulic pressure test on the testing sample through arranging a water tank and a main control console which are connected with the testing sample, greatly simplifies the structure, and improves the integration level of the whole device.

The technical scheme adopted by the utility model for solving the technical problems is as follows: this hollow composite insulator lasts water pressure cycle test machine, its characterized in that: the device is provided with a test unit, wherein the test unit comprises a test cavity for placing a test sample, and a test mechanism which is in butt joint with the test sample is arranged in the test cavity; the water tank and the main control table are arranged on one side of the testing unit, the testing pipeline and a controller for controlling the testing pipeline are arranged in the main control table, the water tank is connected with the testing pipeline in the main control table through a pipeline, the water tank and the testing pipeline in the main control table are respectively connected into the testing unit through pipelines, and the water tank and the testing pipeline in the main control table are connected into an inner cavity of a testing sample through a testing mechanism in the testing unit.

Preferably, the test cavities are arranged in multiple sections side by side, two adjacent test cavities are communicated with each other, the outer end faces of the test cavities at two ends are closed, and an openable protective cover is arranged at an opening above each test cavity.

Preferably, the rear end of the protective cover is hinged with the rear end of the test unit; the rear end of each test cavity is provided with a group of cylinder fixing frames side by side, a driving cylinder is arranged at the top of each cylinder fixing frame, a body of the driving cylinder is hinged to the cylinder fixing frames, a piston rod of the driving cylinder faces towards the corresponding protective cover, and the piston rod of the driving cylinder is hinged to the upper surface of the protective cover.

Preferably, the testing mechanism comprises sealing plates which are respectively butted with two ends of the test sample, and the sealing plates are fixed at the end parts of the test sample through a plurality of fastening bolts on the periphery of the sealing plates; an exhaust channel, a water inlet channel and a pressurizing channel are arranged on the surface of one sealing plate, the outlet of the water inlet channel and the outlet of the pressurizing channel are communicated with the inner cavity of the test sample, and the inlet of the water outlet channel and the inlet of the pressurizing channel are respectively connected with the water tank and the test pipeline in the main control console.

Preferably, the water inlet channel and the pressurizing channel are both arranged along the axial direction of the sealing plate, the water drainage channel is arranged from the inner surface of the sealing plate to the middle part of the sealing plate along the axial direction of the sealing plate, and the water drainage channel is arranged on the outer surface of the sealing plate in a radial bending mode.

Preferably, an exhaust valve is installed at an outlet of the drain passage.

Preferably, in the test pipeline, a compressed air pipeline for compressed air is sequentially connected in series with an air source filter and a pressure regulating valve, and the outlet of the pressure regulating valve is respectively connected with the air source inlets of a first air-liquid booster pump and a second air-liquid booster pump through a first electromagnetic valve and a second electromagnetic valve;

the water source pipeline connected with the water tank is connected with the water source input ends of the first gas-liquid booster pump and the second gas-liquid booster pump through a water source filter, the output end of the first gas-liquid booster pump is connected into the output pipeline after being connected with the check valve in series, the output end of the second gas-liquid booster pump is connected into the output pipeline after being connected with the pressure gauge needle valve in series, and the outlet of the output pipeline is connected into the inner cavity of a test sample through the testing mechanism.

Preferably, the outlet of the pressure regulating valve is connected with the air source inlet of the pneumatic control unloading valve through a third electromagnetic valve, and two ends of the pneumatic control unloading valve are respectively connected with the output pipeline and the water source pipeline.

Compared with the prior art, the utility model has the beneficial effects that:

1. in the continuous hydraulic pressure cycle testing machine for the hollow composite insulator, the testing unit used for placing the testing sample is arranged, and the water tank and the main control console which are connected with the testing sample are arranged, so that the hydraulic pressure testing of the testing sample is realized, the structure is greatly simplified, and the integration level of the whole device is improved.

2. Through set up the protection casing above the test chamber, play the guard action when the test, improved the security of test.

3. The controller controls the executive device in the test pipeline, so that the automation degree is improved.

Drawings

Fig. 1 is a schematic structural diagram of a continuous hydraulic pressure cycle testing machine for hollow composite insulators.

Fig. 2 is a schematic structural diagram of a test unit of the continuous hydraulic pressure cycle testing machine for the hollow composite insulator.

Fig. 3 is a schematic view of the connection of the test pipelines of the continuous hydraulic pressure cycle testing machine for the hollow composite insulator.

Wherein: 1. the device comprises a main control console 2, a water tank 3, a driving cylinder 4, a protective cover 5, a cylinder fixing frame 6, a testing unit 7, a fastening bolt 8, a sealing ring 9, a testing sample 10, an exhaust valve 11, an exhaust channel 12, a water inlet channel 13, a pressurizing channel 14, a sealing plate 15, a compressed air pipeline 16, a pressure regulating valve 17, a first air pressure gauge 18, a first electromagnetic valve 19, a first air-liquid booster pump 20, a one-way valve 21, a second air pressure gauge 22, a pressure transmitter 23, an output pipeline 24, a pneumatic control unloading valve 25, a pressure gauge needle valve 26, a second air-liquid booster pump 27, a second electromagnetic valve 28, a third electromagnetic valve 29, a water source filter 30, a water source pipeline 31 and a gas source filter.

Detailed Description

FIGS. 1 to 3 illustrate preferred embodiments of the present invention, and the present invention will be further described with reference to FIGS. 1 to 3.

As shown in fig. 1, a continuous hydraulic pressure cycle testing machine for hollow composite insulators comprises a main control console 1, a water tank 2 and a testing unit 6. A test sample 9 (i.e., a hollow composite insulator, see fig. 2) is placed in the test unit 6 for testing, and the console 1 and the water tank 2 are simultaneously connected with the test sample 9 in the test unit 6. The main control table 1 is internally provided with a test unit, the test unit 6 is used for controlling the test process of a test sample 9, the main control table 1 is also provided with a controller, the controller is used for controlling each executive device in the test unit 6, and the main control table is also provided with a display screen and a control button which are connected with the controller.

The test unit 6 comprises a plurality of test cavities with open upper ends, the test cavities are arranged side by side according to the length of a test sample 9, two adjacent test cavities are communicated with each other, and the outer end faces of the test cavities at two ends are closed. The bottom of each test chamber is secured by a chassis. A protective cover 4 is arranged at the upper opening of each test cavity, and the rear end of the protective cover 4 is hinged with the rear end of the test unit 6. And a group of cylinder fixing frames 5 are arranged at the rear end of each testing cavity side by side, and the cylinder fixing frames 5 are higher than the top of the testing unit 6.

The top of each cylinder fixing frame 5 is provided with a driving cylinder 3, the body of each driving cylinder 3 is hinged to the cylinder fixing frame 5, the piston rod of each driving cylinder 3 faces the corresponding protection cover 4, and the piston rod of each driving cylinder is hinged to the upper surface of the corresponding protection cover 4. When the driving cylinder 3 stretches or resets, the protective cover 4 is driven to open or close.

Referring to fig. 2, a sealing plate 14 is provided in the test unit 6, and the sealing plate 14 is fixed to flanges at both ends of the test specimen 9 by fastening bolts 7. And a sealing ring 8 for sealing is arranged between the sealing plate 14 and the flanges at two ends of the test sample 9. The surface of a sealing plate 14 at one end of a sample 9 to be measured is provided with a water inlet channel 12 and a pressurizing channel 13, the water inlet channel 12 and the pressurizing channel 13 are both arranged along the axial direction of the sealing plate 14, the water inlet channel 12 is connected with a water tank 2 through a pipeline, the pressurizing channel 13 is connected with a test system in a main control console 1 through a pipeline, an exhaust channel 11 is further arranged in the same sealing plate 14, the exhaust channel 11 is radially bent from the inner surface of the sealing plate 14 to the middle of the sealing plate 14 along the axial direction of the inner surface, so that the outlet of the exhaust channel 11 is positioned on the outer surface of the sealing plate 14, and an exhaust valve 10 is further arranged at the outlet of the exhaust channel 11. The inlet channel 12, the outlet of the pressurizing channel 13, and the inlet of the exhaust channel 11 are all in communication with the lumen of the test specimen 9.

As shown in fig. 3, the compressed air line 15 for compressed air is connected in series with the air source filter 31 and the pressure regulating valve 16 in sequence and then divided into three paths: the first path is connected with the gas source inlet of the first gas-liquid booster pump 19 through a first electromagnetic valve 18, the other path is connected with the gas source inlet of the second gas-liquid booster pump 26 through a second electromagnetic valve 27, and the third path is connected with the gas source inlet of the pneumatic control unloading valve 24 through a third electromagnetic valve 28. A first air pressure gauge 17 is also mounted on the pipeline at the outlet of the pressure regulating valve 16.

One end of a water source pipeline 30 connected with the water tank 2 is connected with one end of a water source filter 29, and the other end is connected with one end of the pneumatic control unloading valve 24. The other end of the water source filter 29 is respectively connected with the water source input ends of the first gas-liquid booster pump 19 and the second gas-liquid booster pump 26. The output end of the first gas-liquid booster pump 19 is connected with the check valve 20 in series and then connected into the output pipeline 23, the output end of the second gas-liquid booster pump 26 is connected with the pressure gauge needle valve 25 in series and then connected into the output pipeline 23, the other end of the pneumatic control unloading valve 24 is connected into the output pipeline 23 simultaneously, the output pipeline 23 is also provided with a second gas pressure gauge 21 and a pressure transmitter 22, and the outlet of the output pipeline 23 is connected with the pressurizing channel 13. A second pressure transmitter (not shown) is mounted on the connection line of the output line 23 and the pressurizing channel 13. The signal outputs of the pressure transmitter 22 and the second pressure transmitter are connected to a controller in the console 1.

The specific working process and working principle are as follows:

first, the test specimen 9 is put into the test unit 6, and the seal plates 14 are fastened to the flanges at both ends of the test specimen 9 by the fastening bolts 7. Then, an operator controls a water source in the water tank 2 to enter the test sample 9 through the water inlet channel 12 by operating a control button at the main control console 1, and when the water source overflows from the exhaust valve 10, water injection is stopped and the exhaust valve 10 is closed.

The controller in the master console 1 firstly controls the second electromagnetic valve 27 and the third electromagnetic valve 28 to be closed, controls the first electromagnetic valve 18 to be opened, compressed air and a water source enter the first gas-liquid booster pump 19 through the compressed air pipeline 15 and the water source pipeline 30 respectively, an outlet of the first gas-liquid booster pump 19 is connected into an inner cavity of the test sample 9 through the output pipeline 23 and the pressurization channel 13 to pressurize the test sample 9, when the preset pressure is reached, pressurization is stopped, after the preset pressure maintaining time, the third electromagnetic valve 28 is opened, pressure relief is carried out through the pneumatic control unloading valve 24, and the times of reciprocating reservation are carried out, so that the fatigue test on the test sample 9 is completed.

And then the controller controls the first electromagnetic valve 18 and the third electromagnetic valve 28 to be closed, controls the second electromagnetic valve 27 to be opened, and controls compressed air and a water source to enter the second gas-liquid booster pump 26 through the compressed air pipeline 15 and the water source pipeline 30 respectively, and the outlet of the second gas-liquid booster pump 26 is connected into the inner cavity of the test sample 9 through the output pipeline 23 and the pressurizing channel 13 to pressurize the test sample 9 until the test sample 9 is exploded, thereby completing the explosion test on the test sample 9. The test pressure at each test stage is monitored by the pressure transmitter 22 and the second pressure transmitter during the test, and recorded and displayed by the controller.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a hollow composite insulator lasts hydraulic pressure cycle testing machine which characterized in that: the device is provided with a test unit (6), wherein the test unit (6) comprises a test cavity for placing a test sample (9), and a test mechanism which is butted with the test sample (9) is arranged in the test cavity; be provided with water tank (2) and master control platform (1) in test unit (6) one side, be provided with the test pipeline in master control platform (1) and carry out the controller controlled to the test pipeline, test pipeline in water tank (2) pass through the tube coupling master control platform (1), test pipeline in water tank (2) and master control platform (1) passes through the pipeline respectively and inserts test unit (6) in, insert the inner chamber of test sample (9) through the accredited testing organization in test unit (6).

2. The continuous hydraulic pressure cycle testing machine for the hollow composite insulator according to claim 1, which is characterized in that: the test cavities are arranged in multiple sections side by side, every two adjacent test cavities are communicated with each other, the outer end faces of the test cavities at the two ends are sealed, and a protective cover (4) capable of being opened and closed is arranged at an opening above each test cavity.

3. The continuous hydraulic pressure cycle testing machine for the hollow composite insulator according to claim 2, is characterized in that: the rear end of the protective cover (4) is hinged with the rear end of the test unit (6); the rear end of each test cavity is provided with a group of cylinder fixing frames (5) side by side, the top of the cylinder fixing frames (5) is provided with a driving cylinder (3), a body of the driving cylinder (3) is hinged to the cylinder fixing frames (5), a piston rod of the driving cylinder (3) faces towards the corresponding protective cover (4), and the piston rod is hinged to the upper surface of the protective cover (4).

4. The continuous hydraulic pressure cycle testing machine for the hollow composite insulator according to claim 1, which is characterized in that: the testing mechanism comprises sealing plates (14) which are respectively butted with two ends of a testing sample (9), and the sealing plates (14) are fixed at the end parts of the testing sample (9) through a plurality of fastening bolts (7) on the periphery of the sealing plates; an exhaust channel (11), a water inlet channel (12) and a pressurizing channel (13) are arranged on the surface of one sealing plate (14), the outlet of the water inlet channel (12) and the outlet of the pressurizing channel (13) are communicated, the inlet of the exhaust channel (11) is communicated with the inner cavity of a test sample (9), and the water inlet channel (12) and the pressurizing channel (13) are respectively connected with the water tank (2) and a test pipeline in the main control console (1).

5. The continuous hydraulic pressure cycle testing machine for the hollow composite insulator according to claim 4, is characterized in that: the water inlet channel (12) and the pressurizing channel (13) are both arranged along the axial direction of the sealing plate (14), the exhaust channel (11) is arranged from the inner surface of the sealing plate (14) to the middle part of the sealing plate (14) along the axial direction of the inner surface, and is arranged on the outer surface of the sealing plate (14) in a radial bending mode.

6. The continuous hydrostatic cycle testing machine for hollow composite insulators according to claim 4 or 5, characterized in that: an exhaust valve (10) is arranged at the outlet of the exhaust channel (11).

7. The continuous hydraulic pressure cycle testing machine for the hollow composite insulator according to claim 1, which is characterized in that: in the test pipeline, a compressed air pipeline (15) for compressed air is sequentially connected with an air source filter (31) and a pressure regulating valve (16) in series, and the air source inlet of a first air-liquid booster pump (19) and the air source inlet of a second air-liquid booster pump (26) are respectively connected with the outlet of the pressure regulating valve (16) through a first electromagnetic valve (18) and a second electromagnetic valve (27);

a water source pipeline (30) connected with the water tank (2) is connected with water source input ends of a first gas-liquid booster pump (19) and a second gas-liquid booster pump (26) through a water source filter (29), an output end of the first gas-liquid booster pump (19) is connected into an output pipeline (23) after being connected with a check valve (20) in series, an output end of the second gas-liquid booster pump (26) is connected into the output pipeline (23) after being connected with a pressure gauge needle valve (25) in series, and an outlet of the output pipeline (23) is connected into an inner cavity of a test sample (9) through a test mechanism.

8. The continuous hydraulic pressure cycle testing machine for the hollow composite insulator according to claim 7, characterized in that: the outlet of the pressure regulating valve (16) is also connected with the air source inlet of the pneumatic control unloading valve (24) through a third electromagnetic valve (28), and the two ends of the pneumatic control unloading valve (24) are respectively connected with an output pipeline (23) and a water source pipeline (30).