A diaphragm compressor diaphragm non-destructive monitoring system and method

A diaphragm compressor and monitoring system technology, applied in the field of compressors, can solve problems such as inability to trigger pressure alarms, achieve the effect of non-destructive monitoring and diagnosis, and achieve a healthy state

Active Publication Date: 2021-12-28
XI AN JIAOTONG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • A diaphragm compressor diaphragm non-destructive monitoring system and method
  • A diaphragm compressor diaphragm non-destructive monitoring system and method
  • A diaphragm compressor diaphragm non-destructive monitoring system and method

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Experimental program
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Embodiment

[0044] a. Build an acoustic emission or vibration signal measurement system

[0045] (1) Select a small acoustic emission sensor or vibration sensor with a suitable size and model according to the diaphragm material and diaphragm installation structure;

[0046](2) Cut out a sensor installation channel on the gas side cylinder head of the diaphragm compressor near the gas side diaphragm 1, and install a small acoustic emission sensor or vibration sensor. Because the cylinder and the oil cylinder in the diaphragm compressor are connected by bolts evenly distributed around the circumference, the outer edge of the diaphragm assembly is tightly pressed and supported by the cylinder and the oil cylinder, so the position where the sensor contacts the diaphragm is that the diaphragm is tightened by the oil / cylinder pressure The area of ​​the branch, and the measurement is located outside the sealing O-ring, so this structure will not cause leakage and has little impact on the strengt...

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Abstract

The application belongs to the technical field of compressors, and in particular relates to a diaphragm compressor diaphragm non-destructive monitoring system and method. 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. For the pressure alarm used, the existing method fails. The present application provides a non-destructive monitoring system for the diaphragm of a diaphragm compressor, which sequentially includes a cylinder, a diaphragm assembly, an oil cylinder, and a data acquisition and processing assembly. The diaphragm assembly is tightly compressed and supported between the air cylinder and the oil cylinder. The diaphragm monitoring and sensing component is arranged in the compacting support area, and the diaphragm monitoring and sensing component is connected with the data acquisition and processing component. During the operation of the diaphragm compressor, the vibration or acoustic emission signal of the diaphragm is monitored, so as to 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 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B51/00G01N29/14G01N29/46G01H17/00
CPCF04B51/00G01N29/14G01N29/46G01H17/00
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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