Even speed tube of flow sensor

A technology of flow sensor and uniform velocity tube, which is applied in the field of flow sensors, can solve problems such as blockage of low-pressure pressure-taking holes and affect the accuracy of flow sensors, and achieve the effects of reducing impact force, improving measurement accuracy and stability, and ensuring accuracy

Inactive Publication Date: 2005-11-16
熊辉
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

When the equalizing tube is working, the measured fluid medium will form a vortex behind the equalizing tube, and the vortex will cause the particles in the measured fluid medium to enter the low pressure pressure hole of the equalizing tube, which will easily cause the low pressure pressure hole to be blocked. Seriously affect the accuracy of the flow sensor

Method used

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  • Even speed tube of flow sensor
  • Even speed tube of flow sensor
  • Even speed tube of flow sensor

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Embodiment Construction

[0026] Such as figure 1 , 2 , 3, 4, and 5 shown in Embodiment 1 of the present invention, a high-pressure pressure-taking hole 3 and a low-pressure pressure-taking hole 4 are provided on the pipe wall of the uniform velocity pipe 5, and a high-pressure passage 1 and a low-pressure passage are arranged in the uniform velocity pipe 5 2. The high-pressure pressure-taking hole 3 and the low-pressure pressure-taking hole 4 communicate with the high-pressure passage 1 and the low-pressure passage 2 respectively; on the upstream side of tube 5. The cross-section of the equalizing tube 5 is bullet-shaped; the low-pressure pressure-taking hole 4 is opened on both sides of the equalizing tube 5 between the upstream surface and the back-flow surface, and the low-pressure pressure-taking hole 4 is opened on the side of the equalizing tube 5 Near the backflow surface.

[0027] Image 6 , 7 It is a cross-sectional view of the velocity equalizing tube 5 of Embodiments 2 and 3 of the pre...

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Abstract

A uniform velocity tube of flow rate transducer consists of high pressure sampling hole at flow receiving surface, low pressure sampling hole at side surface between flow receiving surface and flow departing surface which are built on tube wall of the uniform velocity tube . It features that the said tube section is prepared to be a bullet head form so fluid is splited along two side surfaces of said tube section formed as bullet head to make a flow coefficient relatively stable when fluid flows through the tube.

Description

technical field [0001] The invention relates to a flow sensor, in particular to a velocity equalizing tube of the flow sensor. Background technique [0002] In the process of flow measurement, due to the complexity of the measured medium, there are various measurement methods, so various flow sensors based on different measurement principles have emerged. According to the measurement method and structure, the flow sensor can be divided into differential pressure type, float type, volumetric type, turbine type, etc. [0003] For a sensor that measures fluid flow in a sealed pipe, it consists of a probe that is inserted into the sealed pipe with an equalizing tube that has a face facing the fluid (upcoming face) and a face facing away from the fluid (back flow). noodle). The equalizing tube has a series of regularly distributed high-pressure pressure-taking holes on the upstream surface, and a series of regularly distributed low-pressure pressure-taking holes on the backflow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/34
Inventor 熊辉
Owner 熊辉
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