Two-phase flow parameter detection method based on orifice throttling and acoustic emission technology

Abstract

The invention provides a two-phase flow parameter detection method based on the porous throttling and acoustic emission technology. The method realizes the combined measurement of porous orifice platebased on differential pressure measurement and acoustic emission technology based flow noise measurement, and solves the problem of noise interference when the two-phase flow is measured by using theacoustic emission. According to the detection method of the invention, the vibration noise of a pipeline itself and the inherent noise of the power source such as a water pump air compressor, and thenoise source from other parts can be eliminated or weakened. At the same time, the method makes full use of the advantages of the porous orifice plate and the acoustic emission technology in the respective measurement modes through a reasonable design, so that the two measurement means are more reasonable and effective in the combination mode, and the two-phase flow quantitative measurement basedon the acoustic emission technology can be realized.

Description

technical field [0001] The invention relates to the technical field of gas-liquid two-phase flow detection, in particular to a two-phase flow parameter detection method based on porous throttling and acoustic emission technology. Background technique [0002] Differential pressure flowmeter is one of the most widely used flowmeters in two-phase flow measurement, and it is currently recognized as a flowmeter that can work stably under all flow patterns of two-phase flow. It is based on a phase-separated or homogeneous model, which establishes the relationship between flow and pressure drop. Among them, the longest research history is the throttling differential pressure flowmeter, and the differential pressure method is basically found in the throttling flowmeter. The flowmeter has the advantages of easy installation and reliable operation, and has formed a mature international standard in the course of many years of research. At present, many manufacturers have introduced d...

AI Technical Summary

Problems solved by technology

[0005] Due to its simple structure and durability, the orifice flowmeter has become the most standardized and widely used flowmeter in the world. The research on measuring single-phase flow or homogeneous flow based on the standard orifice flowmeter is relatively mature, but there are still many problems. There are disadvantages such as unstable outflow coefficient, poor linearity, low repeatability, and large permanent pressure loss.

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