Solenoid valve online testing platform

Abstract

The invention discloses an on-line detection platform for electromagnetic valves, which comprises an intake assembly, a fixture, a signal acquisition module and a process control module. The air intake assembly includes an air pressure adjustment and control module and a pressure holding assembly for controlling the intake pressure. One end of the air intake assembly is connected to the external air source, and the other end is connected to the air inlet of the measured solenoid valve; the signal acquisition module is used for time-sharing acquisition The air pressure signal of the same measured point; the process control module judges the air tightness of the tested valve by processing the time-sharing collected data signal of the signal acquisition module. The device uses a pressure sensor and adopts a pressure maintaining method to realize dry leak detection of the device to be tested. The pressure sensor is connected to the acquisition module, and the software quantitative analysis determines whether the device under test is leaking by collecting the air pressure values ​​in different time periods. Only one gas circuit control valve and one pressure sensor are needed, and no standard parts, differential pressure sensors, etc. are required. The gas circuit is simple and the cost is low, and the leak detection of the tested part can be performed quickly and conveniently.

Description

Technical field: [0001] The invention relates to a detection device, in particular to an online detection platform for a solenoid valve which adopts an advanced dry leak detection mode and an efficient and optimized control algorithm. Background technique: [0002] The traditional production workshop adopts the wet leak detection method for solenoid valves. This detection method is easy to damage the equipment to be tested, the process is complicated, and the leakage cannot be quantified. Most of the existing dry-type leak detection equipment uses flow meters or differential pressure sensors for leak detection. The cost of the flowmeter is high, and the method of differential pressure acquisition requires the use of standard parts, sensors, differential pressure transmitters, etc. The gas path is relatively complicated, and the cost is high, which is inconvenient to be widely used. Invention content: [0003] In view of the above technical problems, the present invention ...

AI Technical Summary

Problems solved by technology

The cost of the flowmeter is relatively high, and the method of differential pressure acquisition requires the use of standard parts, sensors, differential pressure transmitters, etc. The gas path is relatively complex and expensive, and it is inconvenient to be widely used

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