Nondestructive monitoring system and method for diaphragm of diaphragm compressor

Abstract

The invention belongs to the technical field of compressors, and especially relates to a nondestructive monitoring system and method for a diaphragm of a diaphragm compressor. When the negative pressure compressed gas of the diaphragm compressor works, that is, both the suction pressure and the discharge pressure are less than the atmospheric pressure and the diaphragm is ruptured, the pressure ofthe chamber between the diaphragms is always less than the atmospheric pressure, and a pressure alarm used in a diaphragm monitoring program cannot be triggered, thus an existing method is invalid. The invention provides the nondestructive monitoring system for the diaphragm of the diaphragm compressor, and sequentially comprises an air cylinder, a diaphragm component, an oil cylinder and a dataacquisition processing component; the diaphragm component is tightly pressed and fixedly supported between the air cylinder and the oil cylinder; a diaphragm monitoring sensing component is arranged in a tight pressing and fixed supporting area; and the diaphragm monitoring sensing component is connected with the data acquisition processing component. During the operation of the diaphragm compressor, vibration or acoustic emission signals of the diaphragm are monitored, thereby achieving nondestructive monitoring and diagnosis of the operating health status of the diaphragm compressor.

Description

technical field [0001] The application belongs to the technical field of compressors, and in particular relates to a diaphragm compressor diaphragm non-destructive monitoring system and method. Background technique [0002] Diaphragm compressor is a special equipment for gas compression with no leakage in the compression cavity. Because of its good sealing performance, wide pressure range and large compression ratio, it is widely used in hydrogen refueling stations and petrochemical fields to compress and transport various high-purity gases, precious and rare gases, toxic and harmful gases and corrosive gases. . The diaphragm is the core component of the diaphragm compressor. The piston pushes the working oil in the oil chamber of the cylinder, and then pushes the diaphragm to reciprocate in the diaphragm chamber to change the working volume of the air chamber. With the cooperation of the suction and exhaust valves To achieve a leak-free periodic work process. In high-pre...

AI Technical Summary

Problems solved by technology

[0006] When the diaphragm compressor works under negative pressure to compress gas, that is, the suction pressure and discharge pressure are both lower than the atmospheric pressure, and the diaphragm ruptures, the pressure in the chamber between the diaphragms is always lower than the atmospheric pressure, which cannot trigger the diaphragm monitoring scheme. The pressure alarm used, the existing method fails, the application provides a diaphragm compressor diaphragm non-destructive monitoring system and method

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