A system and method for non-destructive monitoring of air pressure of a diaphragm compressor

A diaphragm compressor and monitoring system technology, applied in the field of compressors, can solve problems affecting the strength of the cylinder, potential safety hazards, leakage, etc., and achieve the effects of dynamic air pressure monitoring and non-destructive monitoring and diagnosis of health status

Active Publication Date: 2021-08-10
XI AN JIAOTONG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Due to the high pressure ratio and wide pressure range that the diaphragm compressor can operate, the exhaust pressure can reach up to 300MPa. If the method of processing the pressure measuring hole on the cylinder block is adopted, it will not only affect the strength of the cylinder, but also may cause leakage and bring safety. hidden dangers, this application provides a diaphragm compressor air pressure non-destructive monitoring system and method

Method used

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  • A system and method for non-destructive monitoring of air pressure of a diaphragm compressor
  • A system and method for non-destructive monitoring of air pressure of a diaphragm compressor
  • A system and method for non-destructive monitoring of air pressure of a diaphragm compressor

Examples

Experimental program
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Effect test

Embodiment

[0067] a. Build a diaphragm strain measurement system

[0068] (1) Select the appropriate strain gage model according to the diaphragm material, the radial score line size of the middle diaphragm, the material of the exhaust pipe, and the size of the exhaust pipe;

[0069] (2) Paste 2 strain rosettes on the diaphragm. Each strain rosette consists of two strain gauges arranged perpendicular to each other, which are pasted on the air side and oil side diaphragms corresponding to the radial score lines of the middle diaphragm along the radial direction and the circumferential direction respectively. In order to prevent the two strain gauges from coming into contact with the movement of the diaphragm due to their own thickness, it is necessary to paste two strain gauges in dislocation; the lines of the strain gauges pass through the middle diaphragm score line, the air collection chamber, and the air collection chamber channel;

[0070] (3) Paste a strain gauge on the outer wall ...

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Abstract

The application belongs to the technical field of compressors, and in particular relates to a diaphragm compressor air pressure non-destructive monitoring system and method. Due to the high pressure ratio and wide pressure range that the diaphragm compressor can operate, the exhaust pressure can reach up to 300MPa. If the method of processing the pressure measuring hole on the cylinder block is adopted, it will not only affect the strength of the cylinder, but also may cause leakage and bring safety hazards . This application provides a diaphragm compressor air pressure non-destructive monitoring system, including a diaphragm assembly, an exhaust pipe, an air side cylinder head, a rosette circuit group, a strain gauge circuit, and a data acquisition and processing assembly, and the rosette circuit assembly and data acquisition and processing The components are connected, the strain gauge circuit is connected with the data acquisition and processing component, the diaphragm component includes the first diaphragm, the second diaphragm and the third diaphragm arranged in sequence, and the rosette circuit group includes the first rosette circuit, the second rosette circuit circuit and a third rosette circuit. Realize the non-destructive 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 air pressure 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-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B51/00G01L9/00
CPCF04B51/00G01L9/0041
Inventor 彭学院李雪莹闫百岁任省栋贾晓晗
Owner XI AN JIAOTONG UNIV
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