Mean flow rate measuring instrument of gas-solid two-phase flow pipeline

A technology of fluid pipeline and average flow velocity, which is applied in fluid velocity measurement, fluid velocity measurement by pressure difference, velocity/acceleration/impact measurement, etc. It can solve problems such as uneven flow field distribution, wear, and easy blockage of pressure-sensing holes. Achieve the effects of avoiding dust accumulation and clogging, long service life and stable flow coefficient

Inactive Publication Date: 2009-09-30
周丽琴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, direct measurement has problems such as severe wear, easy blockage of pressure sensing holes, and uneven flow field distribution.

Method used

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  • Mean flow rate measuring instrument of gas-solid two-phase flow pipeline
  • Mean flow rate measuring instrument of gas-solid two-phase flow pipeline
  • Mean flow rate measuring instrument of gas-solid two-phase flow pipeline

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Embodiment Construction

[0028] Describe an embodiment in detail below in conjunction with accompanying drawing: as figure 1 , figure 2 As shown, the gas-solid two-phase fluid pipeline average flow rate measuring instrument is a typical circular section arrangement, which is inserted into the fluid pipeline from above the fluid pipeline to directly measure the pressure difference. The pressure-sensing tubes inserted into the fluid pipeline and fixed in a row are composed of four full-pressure pressure-sensing tubes 1 and four negative-pressure pressure-sensing tubes 2 connected side by side. The two adjacent ones in the middle of the full-pressure pressure-sensing tube 1 and the negative-pressure pressure-sensing tube 2 are the longest, and the ones on both sides are successively shorter.

[0029] The upper ends of the full-pressure pressure-sensing tube 1 and the negative-pressure-sensing tube 2 protrude from the fluid pipeline and lead into the full-pressure signal equalizing chamber 3 and the neg...

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Abstract

The invention discloses a gas-solid two-phase fluid pipeline average flow velocity measuring instrument, which adopts the Bernoulli principle, adopts pressure difference measurement and pressure acquisition mode, and is inserted into the fluid pipeline from above the pipeline for direct measurement. Its main structure is that the pressure sensing tubes inserted into the fluid pipeline and fixed in a row are composed of a group of full pressure sensing tubes and negative pressure sensing tubes of different lengths connected side by side. The upper end protrudes from the fluid pipeline and leads into the full-pressure signal equalization chamber and the negative-pressure signal equalization chamber respectively. Negative pressure signal output connection tube. The invention is a gas average anemometer suitable for rectangular, circular and other special-shaped cross-section pipelines.

Description

technical field [0001] The invention relates to a flow velocity measuring device, in particular to an average flow velocity measuring instrument for a gas-solid two-phase fluid pipeline. Background technique [0002] Now, in many industrial production processes, airtight pipelines are used to transport solid particles by means of positive or negative pressure. In this way, there is a gas-solid two-phase flow problem. In order to effectively control the process flow and achieve the purpose of reasonably controlling the participating physical processes and chemical reaction processes, it is necessary to accurately measure the flow rate of the gas-solid two-phase flow medium participating in the process and the average flow velocity in the pipeline. [0003] At present, the measurement methods of gas and solid two-phase flow and velocity mainly fall into two categories: direct method and indirect method. In terms of measurement accuracy and stability, the direct method is sup...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P5/14G01P5/00
Inventor 周丽琴赵勇纲
Owner 周丽琴
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