A differential pressure sensor suitable for high frequency pressure pulse impacts

By introducing a damper and a damping filter channel into the differential pressure sensor, the problems of noise interference and solid impurity blockage under high-frequency pressure pulse impact are solved, and high-precision and stable differential pressure measurement is achieved.

CN123028749APending Publication Date: 2026-11-03HUISHI (SHANGHAI) MEASUREMENT & CONTROL TECH CO LTD
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Patent Information

Application Number
CN202611296150.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-08-25
Publication Date
2026-11-03

AI Technical Summary

Technical Problem

Existing differential pressure sensors are prone to noise interference, zero drift, and decreased measurement accuracy under high-frequency pressure pulse impact, and are also easily blocked or damaged by solid impurities.

Method used

A damper is introduced into the sensor, and a damping filter channel is set up so that the high-pressure side medium flows through the damper before entering the differential pressure core, and flows through the damping filter channel in a bent manner, dissipating high-frequency pulse energy and throwing out solid impurities.

Benefits of technology

It improves the accuracy of differential pressure measurement, protects the differential pressure core, reduces damage to the core from solid impurities, and ensures the stability and reliability of the sensor.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to a differential pressure sensor suitable for high-frequency pressure pulse impact, wherein a damper is arranged, so that the high-pressure side medium flows through the damper before entering the differential pressure core body; the damper is provided with a damping filter channel, the path length of the damping filter channel is greater than the straight line distance length of both ends of the damping filter channel, the high-pressure side medium bends and flows in the damping filter channel, vortexes are formed along the way, the friction force inside the medium and the friction force between the medium and the inner wall of the damping filter channel can dissipate the energy of the high-frequency pulse, the pressure reaching the high-pressure side of the differential pressure core body is more stable, the differential pressure measurement precision can be improved, and the differential pressure core body is protected; meanwhile, when the high-pressure side medium bends and flows in the damping filter channel, the solid impurities inside can be thrown out and settled under the action of inertia and centrifugal force, the contact between the solid impurities and the differential pressure core body is reduced, and the protection effect on the differential pressure core body is achieved.
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