Porosity equivalent area testing method for confined space

A closed space, equivalent area technology, applied in permeability/surface area analysis, measurement device, suspension and porous material analysis, etc., can solve the problem of inability to easily and accurately test the porosity equivalent area of ​​closed space, etc., to solve the problem of cost Human and material resources to avoid the effect of inaccurate data

Inactive Publication Date: 2019-08-23
CHINA ACAD OF SAFETY SCI & TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0012] This application provides a method for testing the porosity equivalent area of ​​a confined space, in order to solve the problem existing in the prior art that the porosity equivalent area of ​​a confined space cannot be tested conveniently and accurately

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  • Porosity equivalent area testing method for confined space
  • Porosity equivalent area testing method for confined space
  • Porosity equivalent area testing method for confined space

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Embodiment Construction

[0041] In the following description, many specific details are explained in order to fully understand this application. However, this application can be implemented in many other ways different from those described here, and those skilled in the art can make similar promotion without violating the connotation of this application. Therefore, this application is not limited by the specific embodiments disclosed below.

[0042] This application provides a method for testing the porosity equivalent area of ​​a closed space. The following are specific examples:

[0043] Such as figure 1 As shown, it is a flowchart of an embodiment of a method for testing the porosity equivalent area of ​​a closed space provided in the first embodiment of the application, and the method includes the following steps:

[0044] In step S101, different pressure difference environments are set for the tested enclosed space through a fan device, and the air flow generated by the fan device at each pressure diffe...

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Abstract

The invention discloses a porosity equivalent area testing method for confined space. Different pressure difference environments are set for tested confined space through a fan device; the air flow generated by the fan device in the case of each pressure difference is tested respectively; the tested air flow generated by the fan device in the case of each pressure difference is converted to the air flow in the case when the pressure difference is a predetermined low pressure value; according to the air flow in the case when the pressure difference is the predetermined low pressure value, in aporosity equivalent area and air flow corresponding table acquired through a standard confined space test in advance, the porosity equivalent area corresponding to the numerical value of the air flowin the case when the pressure difference is the predetermined low pressure value is queried and obtained, and the queried porosity equivalent area is used as the porosity equivalent area of the testedconfined space. Through the testing method, the problem that the conventional testing method consumes manpower and material resources can be solved, and besides, the problem that the data acquired bythe conventional test are inaccurate can also be avoided.

Description

Technical field [0001] This application relates to the testing field of air exchange rate, and in particular to a testing method for the porosity equivalent area of ​​a closed space. Background technique [0002] There are hidden dangers of major gas leakage accidents or fire accidents in sour gas field mining areas, natural gas mining areas, gas mining areas, and some chemical plant annexes. In order to protect the surrounding areas in the event of a production safety accident, The safety of public personnel requires a combination of evacuation, refuge, and other protection strategies after a major production safety accident (especially the leakage and diffusion of toxic gases) occurs in the area. [0003] At present, research on refuge in place at home and abroad is mainly aimed at personnel protection during war (civil defense engineering), and there is less research on refuge protection for poisonous gas leakage caused by production safety accidents. For the impact of environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/0893
Inventor 席学军孙庆云盛勇谢英晖郭再富张兴凯
Owner CHINA ACAD OF SAFETY SCI & TECH
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