Digital integrated mass vortex-shedding meter
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NORTHEASTERN UNIV ENG & RES INST CO LTD
- Publication Date
- 2010-07-07
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention belongs to the technical field of flow measurement, and in particular relates to digital signal processing of a vortex flowmeter, integrated temperature and pressure measurement, steam state identification and derivation-type mass flow measurement technology. Background technique
[0002] The vortex flowmeter is a flow meter designed based on the Karman vortex principle. There is a resistance element (vortex generator) installed in the instrument. When the fluid reaches a certain flow rate and flows through the resistance element, two rows of vortices (vortex street) appearing alternately and arranged neatly will be stably generated downstream of it. The frequency of the vortex is between Within a certain Reynolds number range, it is proportional to the flow velocity of the fluid. Accordingly, by detecting the vortex frequency and knowing the cross-sectional area of the pipe, the volumetric flow rate of the fluid can be obtained. [0...