A gas diaphragm differential pressure transmitter

By isolating the high and low pressure side gases with a diaphragm and using an elastic triggering mechanism to send a signal, the problem of unstable signaling pressure in the presence of impurities in existing differential pressure transmitters is solved, achieving stable signal output and sensitive action, making it suitable for reusable differential pressure transmitters.

CN115823071BActive Publication Date: 2026-05-29新乡市振航机电有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
新乡市振航机电有限公司
Filing Date
2021-12-22
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

When the high-pressure side gas contains oil particles and impurities, the friction of the existing differential pressure transmitter increases, leading to unstable transmission pressure. Furthermore, the magnetic force of the magnetic poles is easily affected by temperature and distance, which affects signal control.

Method used

It adopts a diaphragm pressure deformation triggering mechanism, which isolates the high and low pressure side gases through the diaphragm, and uses an elastic triggering mechanism to release the slide bar to send a signal, avoiding the influence of impurities. The signal is sent by a mechanical structure, which is sensitive and unaffected by the external environment.

Benefits of technology

It achieves stable signal transmission pressure in the presence of impurities, sensitive signal response, and easy manual reset, making it suitable for reusable differential pressure transmitters.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN115823071B_ABST
    Figure CN115823071B_ABST
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Abstract

The application provides a gas diaphragm pressure difference transmitter, which comprises a connecting seat and a sliding rod, one end of the connecting seat is provided with a pressure difference indicating assembly, the other end of the connecting seat is provided with a mounting groove, a diaphragm is arranged in the mounting groove, one side of the diaphragm is a high-pressure side, the other side of the diaphragm is a low-pressure side, one end of the sliding rod is provided with an elastic trigger mechanism, the elastic trigger mechanism is located on the low-pressure side of the diaphragm, the other end of the sliding rod is slid through the connecting seat and is provided with an elastic sliding part, and the elastic sliding part is connected with the pressure difference indicating assembly; when the pressure difference between the two sides of the diaphragm reaches a set value, the diaphragm is deformed to release the sliding rod from the elastic trigger mechanism, and the elastic sliding part drives the pressure difference indicating assembly to move to give a pressure difference indication. The diaphragm is deformed under pressure to release the sliding rod from the elastic trigger mechanism to give a signal, the signal is not affected by impurities in the gas on the high-pressure side, and the signal pressure is stable.
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