Venturi flow meter for bidirectional flow measurement and measurement method thereof

Abstract

The invention discloses a venturi flow meter for bidirectional flow measurement and a measurement method thereof. A front contracted pipe and a rear expending pipe having the same structure are installed between a stabilization pipe I and a second stabilization pipe II; a throat part is installed between the front contracted pipe and the rear expending pipe; the front contracted pipe and the rear expending pipe are symmetrically installed about a center of their connecting line; and integrated structures are formed by ends which have larger transverse planes connecting with the corresponding stabilization pipe I and second stabilization pipe II; and an integrated structure is formed by ends which have smaller transverse planes connecting to the throat part; the stabilization pipe I, the second stabilization pipe II and the throat part are all provided with pressure measurement connecting pipes; the pressure measurement connecting pipes are respectively communicated with corresponding internals of the stabilization pipe I, the second stabilization pipe II or the throat part; the pressure measurement connecting pipes are connected with valve groups which are connected with intelligent differential pressure transmitters. The flow meter and the method can be directly applied in bidirectional flow measurement of single-phase liquid or single-phase gas in a pipeline for providing real-time and accurate measurement of bidirectional flow; the flow meter has simple structure, good repeatability, high measurement precision and less flow pressure loss.

Description

technical field [0001] The invention relates to a Venturi flowmeter, in particular to a Venturi flowmeter capable of realizing bidirectional flow measurement. Background technique [0002] Flowmeter is one of the important instruments in industrial measurement. It is widely used in various fields of national economy such as chemical industry, petroleum, nuclear energy, metallurgy, electric power, electronics, transportation, light textile, food, etc. It is the development of industrial and agricultural production, energy saving, It is an important tool to improve product quality, improve economic efficiency and management level, and occupies an important position in the national economy. In order to adapt to various purposes, various types of flowmeters have come out one after another. Venturi tube differential pressure flowmeter has the advantages of simple structure, stable structure and long service life, so it is widely used in the measurement of single-phase liquid and...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that more than two flowmeters need to be installed when measuring the two-way flow on the same pipeline, which occupies a large space and makes the production cost high and the measurement result is inaccurate. Venturi flowmeter for flow measurement and its measurement method, the flowmeter and method can be directly used for bidirectional flow measurement of single-phase liquid or single-phase gas in pipelines, can measure bidirectional flow accurately in real time, has simple structure, good repeatability, High measurement accuracy and low flow pressure loss

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