Intelligent integrated testing device and method of low-temperature insulated gas cylinder valve

Abstract

The invention discloses an intelligent integrated testing device and method of a low-temperature insulated gas cylinder valve. The intelligent integrated testing device comprises an industrial control computer (1), wherein the industrial control computer is connected with a PLC control system (2) through an RS232 serial communication interface, the input end of the PLC control system is connected with automatic / manual switching button and limit switch signals of a stop valve service life test unit (3), a shell pressure-resisting test unit (4) and a valve action performance test unit (5), the output end of the PLC control system is connected with control solenoid valve coils of the stop valve service life test unit, the shell pressure-resisting test unit and the valve action performance test unit through a contactless relay (6), and pressure sensor signals of the stop valve service life test unit, the shell pressure-resisting test unit and the valve action performance test unit are connected with the PLC control system through an A / D module (7). The intelligent integrated testing device integrates various testing devices of the valve and achieves automatic testing control through the industrial control computer and the PLC control system.

Description

technical field [0001] The invention relates to an intelligent integrated testing device and method for a valve of a low-temperature heat-insulating gas cylinder, which is particularly suitable for testing the valve of a liquefied natural gas cylinder for automobiles. Background technique [0002] With the emphasis on liquefied natural gas energy, liquefied natural gas (LNG) is more and more widely used in the energy field, and liquefied natural gas (LNG) cylinders have become important containers for storing and transporting liquefied natural gas. As one of the core parts of liquefied natural gas cylinders, the valve has been paid much attention. In order to better control the quality of the valve, the test of the valve is very important. [0003] The valve test devices used in the traditional technology are all equipped with a test bench for a valve test item. There are many test devices, which are scattered and occupy a large space. Most of the readings are manual readin...

AI Technical Summary

Problems solved by technology

Most of the readings are manual readings, with large human errors, and cannot monitor the changes of the valve in the test process in detail, and cannot provide accurate information for the development of the valve or the judgment of the quality of the valve. The operation is inconvenient, time-consuming and laborious.

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