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Composite vortex shedding flowmeter

A vortex flowmeter and flowmeter technology, applied in direct mass flowmeters, mass flow measurement devices, volume/mass flow generated by mechanical effects, etc., can solve the problem of large pressure loss, small measurement dynamic range, and inability to measure fluid quality To improve the measurement accuracy and expand the dynamic range of measurement

Pending Publication Date: 2021-06-25
矽翔微机电(杭州)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention includes providing a compound vortex flowmeter to solve the technical problems of the existing vortex flowmeters, such as small measurement dynamic range, large pressure loss, and inability to measure the mass flow rate of the fluid, especially the density of the fluid

Method used

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  • Composite vortex shedding flowmeter
  • Composite vortex shedding flowmeter
  • Composite vortex shedding flowmeter

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Embodiment Construction

[0029] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] This embodiment provides a composite vortex flowmeter, including a flowmeter main unit 10, a control unit 700 and a display unit, such as Figure 1-Figure 3 As shown, the flowmeter main unit 10 includes a pipe body 100, a vortex generator 200 and a detection assembly 300, the vortex generator 200 is installed in the pipe body 100, the vortex generator 200 is provided with a detection channel 210, and the detection assembly 300 is installed in the tube body 100, and the detection thermal time-of-flight of the detection assembly 300 and the calorimetric sensing element 310 are located...

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Abstract

The invention provides a composite vortex shedding flowmeter, and relates to the technical field of fluid measurement. The composite vortex street flowmeter comprises a flowmeter main body unit, a control unit and a display unit, wherein the flowmeter main body unit comprises a pipe body, a vortex shed generating body and a detection assembly, the vortex shed generating body is installed in the pipe body, and is provided with a detection channel, the detection assembly comprises a thermal flight time detection and calorimetric sensing element, the thermal flight time detection and calorimetric sensing element is located in the detection channel, and the thermal flight time detection and calorimetric sensing element is a silicon-based sensor and is connected with the control unit. The composite vortex shedding flowmeter can detect the volume flow rate, the mass flow rate and the density of fluid in a vortex street generating state and a vortex street non-generating state in the pipe body, so that the purpose of expanding the measurement dynamic range is achieved, and the fluid in different states can be measured.

Description

technical field [0001] The invention relates to the technical field of fluid measurement, in particular to a compound vortex flowmeter. Background technique [0002] The vortex flowmeter has the characteristics of high detection accuracy, simple structure, no moving mechanical parts, high reliability, and low maintenance. It is widely used in the flow measurement of industrial process liquids and gases. The current vortex flowmeter has a small range and cannot be measured when the Reynolds number is lower than that of the vortex, which limits the dynamic range of the measurement; the size of the standard vortex generator also causes the vortex flowmeter to have a large pressure loss. In addition, the vortex flowmeter is a pure volumetric measurement and cannot measure the mass flow rate of the fluid, especially the density of the fluid. As a result, large deviations exist in current practical applications, such as in steam metering. Contents of the invention [0003] The...

Claims

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Application Information

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IPC IPC(8): G01F1/28G01F1/80
CPCG01F1/28G01F1/80
Inventor 黄立基冯勇
Owner 矽翔微机电(杭州)有限公司