Calibration device and calibration method for gas fire extinguishing agent concentration testing equipment
A technology for calibrating devices and fire extinguishing agents, applied to measuring devices, instruments, scientific instruments, etc., can solve problems such as single function, high calibration cost, and large calibration error
Active Publication Date: 2021-07-06
COMAC +1
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Problems solved by technology
[0008] This kind of calibration method and device for fire extinguishing agent concentration testing equipment needs to prepare fire extinguishing agent samples with known concentration in advance, and can only achieve the calibration of fire extinguishing agent at a constant flow rate and normal temperature. The calibration cost is high, the calibration error is large, and the function Relatively simple
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[0026] figure 1 A block diagram of a calibration system 100 for gaseous fire extinguishing agent concentration testing equipment according to an aspect of the present disclosure is shown. As can be seen, the exemplary calibration system 100 may include a gas distribution unit 102 , a temperature control unit 104 , and a calibration testing unit 106 .
[0027] According to an exemplary embodiment, the air distribution unit 102 is used to prepare a set ratio of vaporized fire extinguishing agent and air, and provide them to the temperature control unit 104 . According to various embodiments, the vaporized fire extinguishing agent and air may be supplied to the temperature control unit 104 after being mixed, or may be separately supplied to the temperature control unit 104 without being mixed. The gas distribution unit according to the embodiments of the present disclosure is used to prepare fire extinguishing agents of various concentrations in real time, avoiding the high cost...
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One aspect of the present disclosure relates to a calibration device, including an air distribution unit that controls the fire extinguishing agent flowmeter and the air flowmeter based on a predetermined ratio to control the fire extinguishing agent from the fire extinguishing agent storage tank and the high-pressure air from the fire extinguishing agent storage tank, respectively. The flow rate of the air in the bottle is controlled so that the flow-controlled fire extinguishing agent and air meet the predetermined concentration and flow requirements; the temperature control unit is used to mix and control the temperature of the flow-controlled fire extinguishing agent and air so that the fire extinguishing agent-air mixture reaches a predetermined temperature requirement; and a calibration test unit comprising a plurality of test channels for simultaneous calibration of the fire suppressant-air mixture in the plurality of test channels. The present disclosure also relates to corresponding methods and the like.
Description
technical field [0001] The present disclosure relates generally to gaseous fire extinguishing agent concentration testing, and more particularly to aircraft gaseous fire extinguishing agent concentration testing. Background technique [0002] When carrying out fire extinguishing system R&D and certification tests, it is necessary to use gas fire extinguishing agent concentration testing equipment to test the distribution and variation of the sprayed fire extinguishing agent concentration in the protected space to verify the fire extinguishing ability of the fire extinguishing system. [0003] For example, in the research and development and airworthiness certification tests of fire extinguishing systems in aircraft cargo compartments, engine compartments and auxiliary power compartments, it is necessary to use gas fire extinguishing agent concentration testing equipment to test the distribution and variation of the sprayed fire extinguishing agent concentration in the protect...
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IPC IPC(8): G01N33/00
CPCG01N33/00
Inventor 胡博宣扬银未宏郑加伟安凤林
Owner COMAC