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Method and device for measurnig multiple phase flow pressure

A multi-phase flow and pressure technology, used in the measurement of fluid pressure, measurement devices, instruments, etc.

Inactive Publication Date: 2005-03-02
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Another type of non-contact method such as electrostatic method [4] , capacitance method [5] , optical method [6] Etc., this kind of method has certain restrictions on the use occasion or the pipe material for conveying pulverized coal, so this kind of method can't be used in the industrial field

Method used

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  • Method and device for measurnig multiple phase flow pressure
  • Method and device for measurnig multiple phase flow pressure
  • Method and device for measurnig multiple phase flow pressure

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Embodiment Construction

[0025] The present invention is further described below by way of examples.

[0026] Taking the measured medium as gas-solid two-phase flow as an example, the schematic diagram of the device is as follows: figure 1 As shown, pressure gauge 8 is arranged in the figure in order to compare the method of the present invention with the conventional measuring method. The measured medium is gas-solid two-phase fluid. The material of the gas-solid two-phase flow and single-phase flow pipelines may be plexiglass at the test section for observation or photographic recording.

[0027] According to the Bernoulli equation (Bernoulli) in fluid mechanics, without considering the loss, the figure 1 The single-phase gas pipeline has the following formula:

[0028] P 0 = P B + μ 2 ρ 2 + ...

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Abstract

The invention which belongs to fluid measuring technical field, is concretely a method and device of measuring multi-phase fluid pressure. Its basic idea a strand single phase fluid(gas) is shot into fluid to be measured, whose pressure and flux are measured, then pressure of the fluid to be measured is acquired according to relationship of flux and pressure of liquid which is shot and pressure of the fluid to be successively connected and installed on pipeline of the fluid to be measured, it is also called gas sensor because of single phase gas used for delivering pressure, solving wear and blockage problem in surface - contact measurement and sensor needn't to have resistance to high and corrosion in measurement of high temperature medium or strong corrosive medium.

Description

technical field [0001] The invention belongs to the technical field of fluid measurement, and in particular relates to a method and device for measuring multiphase flow pressure. Background technique [0002] Fluid pressure is an important fundamental parameter that needs to be measured in fluid flow. The measurement of fluid pressure is widely used in fields such as electric power, chemical industry, aviation, aerospace, refrigeration, petroleum, and environmental protection. The essence of many flow measurement devices widely used in industrial production is also pressure measurement, such as orifice plate (to measure the pressure before and during the throttling of the fluid), Pitot tube (to measure the dynamic pressure and static pressure of the fluid), Venturi tube (measure the pressure before and during the throttling of the fluid), elbow method (measure the pressure difference between the inner and outer walls when the fluid flows through the elbow), etc. [1] . The...

Claims

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Application Information

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IPC IPC(8): G01L11/00
Inventor 李永光
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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