High-voltage isolation switch test bench

Abstract

A high-voltage isolation switch test bench comprises an industrial personal computer, an operation end for operating the industrial personal computer, a PLC, a direct-current adjustable power supply and a gas circuit unit, and the industrial personal computer controls and collects opening and closing time and opening and closing states of a main contact and an auxiliary contact of a high-voltage isolation switch through the PLC; the industrial personal computer controls the direct-current adjustable power supply through the PLC, and the 380V three-phase alternating-current power supply supplies power to the high-voltage isolation switch through the direct-current adjustable power supply. Direct-current power supply equipment, a gas circuit element, a sensor, a test cable and a test gas circuit are integrated, automatic test and automatic data recording are realized through communication between test software in an industrial personal computer and a PLC (programmable logic controller), and the problem that a high-voltage isolating switch cannot be automatically tested is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of locomotive, especially a high voltage isolating switch test bench. BACKGROUND

[0002] HXD1B, HXD1D, HXD3C, HXD1C type electric locomotive all have two pneumatic high voltage isolating switches, in the locomotive C6 repair stage, must be to pneumatic high voltage isolating switch disassembly, overhaul, assembly and test, according to high voltage isolating switch factory test outline, must be to high voltage isolating switch in main loop, control loop carries out insulation withstand voltage test, to high voltage isolating switch movable contact under different voltage, wind pressure carries out switching test, to high voltage isolating switch internal gas circuit carries out pressure test.

[0003] The existing high voltage isolating switch test is mainly completed independently through several scattered test devices, for example, the high voltage isolating switch action test adopts a separate manual high voltage isolating switch test bench, and the high voltage isolating switch pressure test adopts a separate pneumatic pressure test device. The existing high voltage isolating switch test needs to use multiple different devices on site, and the operation is complex and requires a large number of operators. The existing high voltage isolating switch test is manually operated, and cannot realize automatic operation. SUMMARY

[0004] The utility model solves the technical problem that provide a kind of high voltage isolating switch test bench, it is easy to operate, realizes automatic operation.

[0005] To solve the above technical problem, the technical scheme of the utility model is as follows: a kind of high voltage isolating switch test bench, including industrial computer, the operation end of operating industrial computer, PLC, direct current adjustable power supply and gas circuit unit, the industrial computer is controlled and gathers the switching time and switching state of high voltage isolating switch main, auxiliary contact point by PLC;The industrial computer controls direct current adjustable power supply by PLC, and 380V three-phase ac power supply is supplied to high voltage isolating switch by direct current adjustable power supply.The utility model principle: the integration of direct current adjustable power supply, gas circuit unit, sensor, test cable, test gas pipe etc., by the special test software of built-in industrial computer is realized control different air pressure and voltage to the test piece by with PLC communication, simultaneously, the air pressure, voltage, switching frequency, switching test etc. of test data in test piece are gathered after sensor and PLC, and are shown in software interface by operation analysis and are completed test;By PLC program editing, design test bench can realize two operating modes of automatic test, manual test, and output test report.

[0006] As an improvement, the gas circuit unit sequentially includes a hand slide valve, a pressure gauge, a filter cup, a solenoid valve, a booster pump, an electric proportional valve, a gas control valve, a gas tank and an air pressure sensor from the origin to the high voltage isolating switch.

[0007] The utility model discloses compared with prior art brings beneficial effect is:

[0008] By integrating direct current power supply equipment, gas path element, sensor, test cable, test gas path as a whole, realizes automatic test, automatic record data with the communication of industrial computer test software and PLC, solves the problem that high voltage disconnecting switch can not be automatically tested. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is high voltage disconnecting switch test bench schematic diagram.

[0010] Figure 2 It is high voltage disconnecting switch test bench pneumatic principle diagram. DETAILED DESCRIPTION

[0011] The utility model will be further explained below in conjunction with the drawings of specification.

[0012] As Figure 1 Shown, a kind of high voltage disconnecting switch test bench, including industrial computer, the operating end of operating industrial computer, PLC, direct current adjustable power supply and gas path unit, the industrial computer is controlled by PLC and gathers the opening and closing time and opening and closing state of high voltage disconnecting switch main, auxiliary contact point;The industrial computer controls direct current adjustable power supply by PLC, and 380V three-phase ac power supply is powered to high voltage disconnecting switch by direct current adjustable power supply.The PLC and industrial computer use Ethernet to communicate, click the button on test software interface, can complete air tightness test and single or multiple opening and closing test;Equipment is equipped with emergency stop button, and when emergent failure, press down emergency stop, can cut off measurement and input in time, to protect personal and equipment safety. As Figure 2 Shown, the gas path unit is in turn hand slide valve, pressure gauge, filter cup, solenoid valve, booster pump, electric proportional valve, pneumatic control valve, gas tank and air pressure sensor from origin to high voltage disconnecting switch;Wherein hand slide valve controls the on-off of entire gas path by manual sliding, pressure sensor detects gas source air pressure value, filter cup is used to filter water vapor and impurities in air, solenoid valve controls the on-off of gas path by electric signal, booster pump is used to send gas to gas tank, electric proportional valve controls boost speed, two pneumatic control valves are used for gas tank air supply and exhaust, and air pressure sensor detects test piece control air pressure value.

[0013] Taking the test condition that the gas source input is 1000KPa and the test piece control gas pressure is 600KPa as an example, the test bench is connected to the gas source, the hand slide valve is opened, the gas flow passes through the filter cup to the electromagnetic valve, the total wind open button on the operation interface is clicked, the electromagnetic valve is opened, the gas flow reaches the booster pump, the air supply button on the operation interface is clicked, the gas control valve is opened, the booster pump pumps air to the gas tank, and the electric proportional valve controls the flow rate according to the detection value of the pressure sensor, until the detection value of the pressure sensor is 600KPa, at this time, the test piece control gas pressure is 600KPa, after the test, the air supply is clicked, the booster pump does not pump air to the gas tank, the air discharge is clicked, and the gas tank starts to discharge air until the pressure is 0KPa.

[0014] The utility model discloses a direct current adjustable power supply, gas path unit, sensor, test cable, test air pipe etc. are integrated, and the special test software in built-in industrial computer realizes control different gas pressure and voltage to the test piece through communication with PLC, simultaneously, the gas pressure, voltage, opening and closing times, opening and closing test of the test piece, etc. are gathered through sensor and PLC, and through operation analysis and display on the software interface after the test data, complete the test, through the PLC program editing, the test bench can realize two operation modes of automatic test and manual test, and output test report.

Claims

1. A high-voltage disconnector test bench, characterized in that: Including industrial computer, operation terminal of operating industrial computer, PLC, DC adjustable power supply and gas circuit unit, the industrial computer controls and collects the opening and closing time and opening and closing state of the main and auxiliary contacts of the high-voltage disconnecting switch through PLC, the industrial computer controls the DC adjustable power supply through PLC, and the 380V three-phase AC power supply supplies power to the high-voltage disconnecting switch through the DC adjustable power supply.

2. The high-voltage disconnector test bench according to claim 1, characterized in that The gas circuit unit sequentially includes a hand slide valve, a pressure gauge, a filter cup, a solenoid valve, a booster pump, an electrical proportional valve, a gas control valve, a gas tank and a gas pressure sensor from the origin to the high-voltage disconnecting switch.

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