Inner cone type differential pressure flowmeter based on multi-parameter compensation

Through the multi-parameter compensation technology of the inner cone differential pressure flowmeter, the problems of sensor error and fluid physical properties are solved, and high-precision flow measurement is realized, which is suitable for flow metering in the fields of thermal, chemical, petrochemical and other fields.

CN120252866APending Publication Date: 2025-07-04SHANXI UNIV
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Patent Information

Application Number
CN202510636893.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-18
Publication Date
2025-07-04

AI Technical Summary

Technical Problem

The measurement accuracy of existing differential pressure flow meters is affected by sensor errors and changes in fluid physical parameters. Especially in the production process of thermal, chemical, petrochemical, etc., the flow measurement is not accurate enough.

Method used

The internal conical differential pressure flowmeter based on multi-parameter compensation is adopted, including temperature measuring elements, internal conical throttlers, temperature transmitters, pressure transmitters and differential pressure transmitters. The temperature and pressure correction are carried out through the data processing module to obtain fluid density and flow parameters, and accurately measure.

Benefits of technology

It maximizes the error caused by changes in fluid physical parameters, improves measurement accuracy, is suitable for crystallization and dirt-like media, with low permanent pressure loss, is suitable for gas and liquid measurement, and improves process environment optimization and safety.

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Abstract

The invention relates to an inner cone type differential pressure flowmeter based on multi-parameter compensation. The flow meter aims to solve the technical problem that an existing flow meter is greatly influenced by fluid parameters. According to the technical scheme, the device comprises a constant flow unit, a testing module, a transmitter module and a data processing module, a temperature measuring element and an inner cone throttler are arranged on the upstream inner wall and the downstream inner wall of a measuring pipeline in the fluid direction, the transmitter module comprises a temperature transmitter, a pressure transmitter and a differential pressure transmitter, the temperature transmitter is electrically connected with the temperature measuring element, and the pressure transmitter is electrically connected with the differential pressure transmitter. The pressure transmitter is electrically connected with a pipeline, the differential pressure transmitter is electrically connected with the head end and the tail end of the inner cone throttler, the data processing module comprises an adder, a multiplier and a squarer, the temperature transmitter, the constant current unit and the pressure transmitter are connected with the adder, the adder and the differential pressure transmitter are connected with the multiplier, the multiplier is connected with the squarer, and the squarer is connected with the output unit. Errors caused by fluid physical property parameter changes can be eliminated to the maximum extent through measured values, and the measurement precision is greatly improved.
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Citation Information

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