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Low-pressure-drop super acceleration gauge

A meter and low pressure loss technology, which is applied in the direction of detecting fluid flow by measuring pressure difference, volume/mass flow generated by mechanical effects, etc., and can solve the problem of narrow measurement accuracy and range, narrow range range, and low accuracy of low Reynolds number fluids and other problems, to achieve the effect of wide measuring range, increased Reynolds number, and increased medium flow velocity

Inactive Publication Date: 2015-11-11
银川融神威自动化仪表厂(有限公司)
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art, provide a unique structure, solve the problems of low Reynolds number fluid measurement accuracy and narrow measurement range, and solve the problems of measurement accuracy and narrow measurement range under low pressure loss, A kind of low-pressure loss ultra-accelerated meter which solves the problem of on-line installation and replacement of measuring instruments

Method used

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  • Low-pressure-drop super acceleration gauge

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Embodiment Construction

[0018] A low-pressure-drop ultra-accelerometer, which includes a venturi tube 1, such as figure 1 , 2 Shown in and 3: the Venturi tube 1 is a plug-in outer class Venturi tube, and a rectangular tubular generator 2 is matched in the Venturi tube 1, and two venturi tubes are matched with the rectangular tubular generator 2 on the Venturi tube 1 and the rectangular tubular generator 2 Axially vertical pressure pipes 3 and 4.

[0019] The tail of the outer Venturi tube 1 is in the shape of a cone that gradually diffuses; the base angle of the cone at the tail of the outer Venturi tube 1 is α 1 , the top angle is β 1 , the α 1 7.5°, β 1 is 15°; the distance between the two pressure-taking tubes 3 and 4 is 1D, and D is the inner diameter of the outer Venturi tube 1. The distance between the two pressure-taking tubes 3 and 4 is 25.4mm; the rectangular tubular generator 2, such as figure 2 Wedge contraction angle α 2 for 4 5° ， Diffusion angle β 2 for 4 5° .

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Abstract

The invention relates to a flow measuring device, in particular to a low-pressure-drop super acceleration gauge. The low-pressure-drop super acceleration gauge comprises a Venturi tube, and is characterized in that the Venturi tube is an inserted type external Venturi tube, a rectangular tubular generator is matched in the Venturi tube, and two pressure tapping tubes perpendicular to the axis direction of the Venturi tube and the rectangular tubular generator are matched with the Venturi tube and the rectangular tubular generator. The low-pressure-drop super acceleration gauge is unique in structure, solves the problems that accuracy is low and measuring range is narrow during low-Reynolds-number fluid measurement, solves the problems that under low pressure drop, measurement accuracy is low and measuring range is narrow, and achieves the purpose of installing and replacing a measuring instrument online.

Description

technical field [0001] The invention relates to a flow measuring device, in particular to a low-pressure loss ultra-accelerated meter. Background technique [0002] In the field of current differential pressure instrument flow measurement, there is mainly a balance flowmeter throttling part. Application number: CN201210559562, application date: 2012.12.21, publication (announcement) number: CN103048022A, applicant (patent) person: Shanghai Huaqiang Fuluo Instrument Co., Ltd., and Venturi-shaped porous orifice flowmeter: application number: CN201210231520, application date: 2012.07.05, publication (announcement) number: CN102735293A, applicant (patent) person: China Tianchen Engineering Co., Ltd.; Tianjin Tianchen Green Energy Engineering Technology Research and Development Co., Ltd.; Inventors: Li Xinlong, Xing Tao, Li Ye, Liu Zhiwei, Zhang Wei, Wang Luyi, the appearance of these two instruments is based on the orifice plate to change the distribution of the throttle hole, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/36G01F1/44
Inventor 唐力南景兆才王志忠
Owner 银川融神威自动化仪表厂(有限公司)
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