Oil pressure monitoring device and method for diaphragm compressor cylinder

Abstract

The present application belongs to the technical field of compressors, and in particular to an oil pressure monitoring device and method for a diaphragm compressor cylinder. Diaphragm compressors canoperate within a wide range of the pressure, and the exhaust pressure can be up to 300 MPa. However, if the pressure is monitored by a pressure monitoring hole machined in the cylinder, the integrityof the cylinder is seriously damaged, the cylinder strength will be affected, and leakage is resulted in. The present application provides an oil pressure monitoring device for a diaphragm compressorcylinder, including a piston rod and a strain strip circuit, the strain strip circuit including an strain strip assembly and a bridge circuit connected to each other, and the strain strip assembly isdisposed on the piston rod surface. Since the strain strip assembly is non-invasively placed on the piston rod of the diaphragm compressor to measure the piston rod load, the oil pressure can be measured indirectly, and the diaphragm compressor oil pressure can be safely measured without damage. No damage is caused to the diaphragm compressor, non-intrusive monitoring is safe and reliable, especially in high pressure conditions can achieve accurate monitoring of oil pressure.

Description

technical field [0001] The application belongs to the technical field of compressors, and in particular relates to an oil pressure monitoring device and method in an oil cylinder of a diaphragm compressor. Background technique [0002] Diaphragm compressor is a special equipment for gas compression that only allows a small amount of leakage or does not allow leakage. Because of its good sealing performance, wide pressure range and large compression ratio, it is widely used in hydrogenation stations and other petrochemical fields to compress and transport various high-purity gases, precious and rare gases, toxic and harmful gases and corrosive gases. . In the diaphragm compressor, the piston pushes the working oil in the cylinder oil chamber, and then pushes the diaphragm to reciprocate in the diaphragm chamber to change the working volume of the air chamber, and achieve no leakage with the cooperation of the suction and exhaust valves periodic work process. In the hydraul...

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Problems solved by technology

[0006] Based on the wide operating pressure range of the diaphragm compressor, the discharge pressure can reach up to 300MPa, but if the pressure is monitored by machining a pressure measuring hole on the cylinder, the opening of the cylinder wall will cause leakage and affect the strength of the cylinder. The application provides a device and method for monitoring the oil pressure in the oil cylinder of a diaphragm compressor

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