Vortex shedding flowmeter with jet bionic type vortex generating body

Abstract

The invention aims to provide a vortex shedding flowmeter with a jet bionic type vortex generating body. The vortex shedding flowmeter includes a flowmeter body and a vortex generating body, wherein the flowmeter body is mounted on a pipeline; the vortex generating body is arranged in the pipeline; the vortex generating body includes a guide fluid body and a triangular prism shaped body; the guide fluid body is of a semi-cylindrical blocky structure with a V-shaped groove; the V-shaped groove is formed in the front end of the guide fluid body; both sides of the V-shaped groove are arc-shaped structures, and the back end of the guide fluid body is a plane structure; through holes are formed in the guide fluid body, and the two end faces of the though holes are respectively positioned on the V-shaped groove and the arc-shaped structures; the V-shaped groove at the front end of the guide fluid body is arranged facing the incoming direction of the fluid in the pipeline; the triangular prism shaped body with a concave surface is arranged at the rear of the guide fluid body, and the concave surface is arranged opposite to the incoming direction of the fluid in the pipeline; a slit is arranged between the triangular prism shaped body and the guide fluid body. The vortex shedding flowmeter provided by the invention can reduce the resistance produced during liquid flow; the vortex signals produced by the vortex shedding flowmeter are stronger than those produced by a single generating body; the signal to noise ratio is high, the pressure loss is small, and the lower limit of the flow amount is low.

Description

technical field [0001] The present invention relates to a flow meter. Background technique [0002] With the development of industry, especially the petrochemical industry, the application of vortex flowmeters is becoming more and more popular. It can accurately measure the flow of fluid and plays an important role in the development of the industry. As a vortex flow meter The vortex generator has an important influence on the accuracy of the vortex flowmeter, but the existing technology cannot meet the measurement requirements very well, which is manifested in: the strength and stability of the shedding vortex of the cylindrical generator The non-circular section with a fixed separation point has a difference in volume, and in different pipelines, it is greatly affected by the flow velocity. The triangular columnar body is too much affected by the design of the apex angle, and the resistance is large. The trapezoidal body has disadvantages The reason is that the structure ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a bionic vortex generator with jet flow that solves the problems of weak vortex signal, low linearity, complex structure, large resistance to fluid, and great influence on fluid flow in the existing vortex flowmeter. body vortex flowmeter

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