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Test method for tightness of air duct air pressure and smoke detection

A test method and technology of detection method, which can be used in the use of liquid/vacuum for liquid tightness measurement, by detecting the appearance of fluid at the leak point, and by measuring the increase and deceleration rate of the fluid, etc., can solve problems such as rust marks on air ducts , to achieve accurate and reliable test results

Active Publication Date: 2016-03-30
CHINA MCC5 GROUP CORP
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For air ducts in a clean environment, a high degree of sealing is required to prevent external dust from entering the clean environment from the leaking location. Traditional air duct tests generally use water pressure testing, and this test method will cause rust marks on the air ducts. Therefore, this This method is generally used for plastic pipeline testing

Method used

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  • Test method for tightness of air duct air pressure and smoke detection

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 shown.

[0023] The air duct air pressure smoke detection tightness test method includes the smoke leak detection method, and the smoke leak detection method includes the following steps:

[0024] Step a, air duct sealing step: remove the branch pipe connected to the air duct, seal the opening of the removed branch pipe, seal the remaining ports of the air duct and maintain an air supply opening;

[0025] Step b, the installation step of the air supply device: take the centrifugal fan 5 and install it at the air supply opening of the air duct through the orifice plate 9;

[0026] Step c, detection tool installation step: install the air flow differential pressure gauge 8 at the orifice plate 9, and install a pipe static pressure differential pressure gauge 11 in at least one position in the air duct respectively;

[0027] Step d, smoke device installation step: Install the smoke generating device 10 at the orifice 9 or in the air duct or at the exit o...

Embodiment 2

[0043] Such as figure 1 As shown, the wind pressure smoke detection test system based on the air pressure smoke detection tightness test method of the air duct includes an air duct 4 that keeps the remaining ports sealed at one air supply opening, and a centrifugal fan 5 is arranged at the air supply opening through an orifice plate 9, An air intake differential pressure gauge 8 is installed at the orifice plate 9, and a static pressure differential gauge 11 is respectively installed in at least one position in the air duct; a smoke generator is installed at the orifice plate 9 or in the air duct or at the outlet of the centrifugal fan 5 device 10.

[0044] Between the centrifugal fan 5 and the through-hole plate 9 , from the centrifugal fan 5 to the through-hole plate 9 , a restrictor 6 and a rectifying grid 7 are arranged in sequence.

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Abstract

The invention discloses a wind-pressure smoke detection and leakproofness testing method of an air pipe and a wind-pressure smoke detection testing system of the air pipe. The wind-pressure smoke detection and leakproofness testing method of the air pipe comprises a smoke leakage detection method, and smoke escapes to the leaking hole position under the action of high pressure, so that the leaking hole can be conveniently and visually observed, convenience and reliability are achieved, and meanwhile, harmful effects caused by hydraulic pressuring test are prevented.

Description

technical field [0001] The invention relates to a tightness test of an air duct, namely a method for testing the tightness of an air duct for wind pressure and smoke detection and a system for testing the air pressure and smoke. Background technique [0002] For air ducts in a clean environment, a high degree of sealing is required to prevent external dust from entering the clean environment from the leaking location. Traditional air duct tests generally use water pressure testing, and this test method will cause rust marks on the air ducts. Therefore, this This method is generally used for plastic pipeline testing. In order to solve the above problems, the present invention needs to design a device and method that can effectively detect the airtightness of the air duct, while ensuring that the air duct is not affected by the test. Contents of the invention [0003] The object of the present invention is to provide an air duct air pressure and smoke detection tightness te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/28G01M3/22
Inventor 杨汉林赵钟王欢
Owner CHINA MCC5 GROUP CORP
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