The method of obtaining the maximum length of the fire detection tube used in the fire detection tube fire extinguishing device

Abstract

The invention relates to an acquisition method of the maximum length of a fire detection tube matched with a fire detection tube fire extinguishing device. In the method, a minimum pressure at a blasting port of the fire detection tube of the fire extinguishing device is acquired by virtue of tests; the pressure value is substituted into a calculation formula; and the maximum length of the fire detection tube arranged on the direct type fire detection tube fire extinguishing device can be acquired by calculation. According to the method, the maximum length of the fire detection tube arranged on the direct type fire detection tube fire extinguishing device can be calculated conveniently, efficiently and accurately; a basic formula for calculating pressure loss of the fire detection tube, atesting method of the pressure at the blasting port of the fire detection tube and a determining method of the minimum pressure are provided; therefore, the determination of the method provides a basis for design, construction and inspection of studying on the fire detection tube fire extinguishing device, and facilitates development and popularization of the product.

Description

technical field [0001] The invention relates to the technical field of fire-fighting facilities, in particular to a method for obtaining the maximum length of a fire-detection pipe equipped with a fire-detection pipe fire extinguishing device. Background technique [0002] The direct type fire detection tube fire extinguishing device is mainly composed of fire extinguishing agent bottle group, fire extinguishing agent, container valve, fire detection pipe and so on. Under normal conditions, the fire detection tube is filled with nitrogen with a certain pressure, and the fire extinguishing agent bottle group can be filled with fire extinguishing agents such as heptafluoropropane and carbon dioxide. , and release the plastic pipe of the fire extinguishing agent through the blast hole. The feature of the device is that it does not need an external power supply and a special fire detector, and relies on a fire detection tube to detect a fire and directly activate the device to...

AI Technical Summary

Problems solved by technology

At present, there is no effective method to determine the maximum length of the fire detection tube attached to the direct type fire detection tube fire extinguishing device. Each production unit conducts tests section by section to obtain the data. This method mainly has the following disadvantages: (1 ) The test efficiency is not high and the waste is large; (2) The accuracy of the test results is not high and cannot reflect the maximum capacity of the device; (3) It cannot provide a basis for engineering calculations

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