Method and device for indirectly measuring leaking amount of fire extinguishing agent in low-pressure carbon dioxide fire extinguishing system

Abstract

The invention relates to a method and a device for indirectly measuring the leaking amount of a fire extinguishing agent in a low-pressure carbon dioxide fire extinguishing system, wherein the method and the device are used for judging the heat preservation and insulation effects in an indirect way. The method is favorable for overcoming the disadvantages of difficulty in hanging and transporting, low measurement precision and the like in the traditional direct weighing method. A collection container which is used for collecting the leaked carbon dioxide fire extinguishing agent and has a sealing performance is connected with a safety valve outlet of the low-pressure carbon dioxide fire extinguishing system; and the masses of the collection container and connection accessories of the collection container before the test and after the test are respectively measured and the difference of the masses of the collection container and the connection accessories of the collection container intwo times of weighing is the leaking amount of the fire extinguishing agent in the low-pressure carbon dioxide fire extinguishing system. According to the method and the device provided by the invention, a device and procedures for measuring the leaking amount of the fire extinguishing agent in the low-pressure carbon dioxide fire extinguishing system are simplified, the error of test results is small and the measurement precision is improved. Meanwhile, the installation, detachment and transportation of all the members are convenient, the operation is simple and easy, and the precision of a weighing device is high.

Description

technical field [0001] The invention relates to a method for measuring the thermal insulation effect of a low-pressure carbon dioxide fire extinguishing system, in particular to a method and a device for indirectly measuring the leakage of a fire extinguishing agent in a low-pressure carbon dioxide fire extinguishing system. Background technique [0002] The low-pressure carbon dioxide fire extinguishing system is to store the carbon dioxide fire extinguishing agent in a liquid form in a storage device with a thermal insulation structure. The temperature of the carbon dioxide in the storage device is maintained within the range of -20°C to -18°C through the refrigeration system. When a fire occurs , the fire extinguishing system releases liquid carbon dioxide into the protected area or the protected object through the nozzle to implement fire extinguishing. In the actual engineering application of the fire extinguishing system, when the refrigeration system stops running due...

AI Technical Summary

Problems solved by technology

Using this method to measure, there are mainly problems in the following aspects: 1. The mass of the low-pressure carbon dioxide fire extinguishing system is large, and it is difficult to hoist and transport; When the maximum working pressure is reached in the device, the storage tank belongs to the second-class pressure vessel, and there is a certain danger in transportation

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