A pressure difference measuring device

By designing a fixed plate and rotating plate structure, combining a torsion spring and an angle sensor, and adjusting the orifice plate opening area, the problem of inaccurate measurement and damage of the pressure instrument when the fluid pressure fluctuates greatly is solved, and the effect of stable measurement of pressure difference and improved safety is achieved.

CN120102006BActive Publication Date: 2025-09-26济南仕中自动化仪表有限公司
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Patent Information

Application Number
CN202510551686.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-04-29
Publication Date
2025-09-26
Estimated Expiration
2045-04-29

AI Technical Summary

Technical Problem

In industries such as petrochemicals, the measuring range of pressure instruments is within a certain range, but the fluid pressure fluctuates greatly, resulting in inaccurate measurement and easy damage of the pressure instruments.

Method used

A pressure difference measuring device is designed, which adopts a fixed plate and a rotating plate structure. The rotating plate is driven to rotate by fluid impact to adjust the connectivity between the large hole and the small hole. The torsion spring is used for reset. The rotation angle of the rotating plate is measured in combination with an angle sensor, and the opening area is adjusted in real time to adapt to pressure fluctuations.

Benefits of technology

It achieves stable measurement of pressure difference, reduces impact on pressure instruments, avoids damage to pipelines and instruments, and improves the safety of fluid transportation.

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Abstract

The present invention relates to the technical field of fluid pressure measuring equipment, and specifically to a pressure difference measuring device, including a valve body, wherein a fixed plate and a rotating plate are provided in the valve body, and n large holes and n small holes are correspondingly provided on the fixed plate and the rotating plate, and a fixed shaft is provided on the fixed plate, and the rotating plate is rotatably mounted on the fixed shaft, and a torsion spring for resetting is provided between the rotating plate and the fixed shaft, and a plurality of protruding blades are provided on the plate surface of the rotating plate; the fluid in the valve body impacts the blades to drive the rotating plate to rotate so that the large holes on the fixed plate and the rotating plate are connected and the small holes are closed, or the torsion spring resets the rotating plate so that the large holes on the fixed plate and the rotating plate are closed and the small holes are connected.
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