Double-wing type flow sensor

A flow sensor and double-wing technology, which is applied in the field of sensors, can solve the problems of low measurement accuracy, unstable outflow coefficient, and easy pollution accumulation, and achieve the effect of large measurement range, stable flow coefficient, and high measurement accuracy
CN102901538BActive Publication Date: 2015-03-25南京新流道节能科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
南京新流道节能科技有限公司
Publication Date
2015-03-25

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Abstract

The invention discloses a double-wing type flow sensor and a method for measuring flow by the sensor. The double-wing type flow sensor comprises a flow senor shell, and the flow sensor shell consists of a large wing and a small wing, the top of the large wing is used as the head of the flow sensor, the bottom of the small wing is used as the tail of the flow sensor, and a joint of the large wing and the small wing is provided with a corner so that fluid can separably flow at the corner. The head of the large swing is provided with a pressure hole or groove, a high-pressure cavity is reserved on an end face of the head of the large wing and communicated with the pressure hole or groove. A low-pressure cavity is reserved on an end face of the small wing and communicated with a discharge hole or groove at a corner of the large wing and the small wing. The double-wing type flow sensor can be disposed in a pipeline, the cross section of the flow sensor is formed by two sings, and by means of pressure difference of upstream high pressure and downstream low pressure generated when fluid to be tested flows through measuring pieces, the pressure difference can be converted into flow by a secondary device, and the flow can be displayed by a display device.
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Description

technical field

[0001] The invention relates to the technical field of sensors, in particular to a double-wing flow sensor and a method for measuring flow by using the sensor. Background technique

[0002] If a measuring piece with a flow area smaller than the cross-sectional area of ​​the pipe is placed in a pipeline filled with fluid, the fluid bundle in the measuring pipeline will cause local contraction or flow separation when passing through the measuring piece. At the point of contraction or separation, the static pressure Will decrease, so there will be a certain pressure difference (also known as differential pressure) before and after the measuring piece. There is a certain functional relationship between the pressure difference and the flow rate, so the flow rate can be measured by measuring the pressure difference before and after the measuring piece placed in the pipeline.

[0003] The existing flow sensors need to be placed in the pipeline, and the various flow...

Claims

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