Cross-shaped dry powder extinguishing cover system

Abstract

The invention discloses a cross-shaped dry powder extinguishing cover system comprising a high-pressure air compressor, a high-order dry powder extinguishing agent storage container, an emanation powder-pumping device and a dry powder extinguishing agent jetting device which are connected in sequence through a conveying steel pipe. The dry powder extinguishing agent jetting device comprises four cross-shaped distribution pipes, metal supports which are mounted under the tail ends of the distribution pipes, a distributor which is arranged in the intersection position of the four distribution pipes and an annular metal reinforcing rib which is connected with the four distribution pipes. The upper port of each distribution pipe communicates with the distributor. The tail ends of the four distribution pipes are closed, accordingly a concentric circle is formed. Dry powder extinguishing agent jetting pipe orifices with the openings being perpendicularly formed downward are arranged at same intervals in the length directions of the distribution pipes. The conveying steel pipe located at the output end of the emanation powder-pumping device is connected with the dry powder extinguishing agent distributor through a metal flexible pipe. According to the cross-shaped dry powder extinguishing cover system, an extinguishing agent is jetted concentratedly in the area near the roots of combustion flame, so that a fire of leakage combustibles of an underground pipe network can be extinguished rapidly and effectively.

Description

technical field [0001] The invention relates to the field of fire protection, in particular to a cross-shaped dry powder fire extinguishing hood system. Background technique [0002] In recent years, my country's intricate underground pipeline network, frequent earthwork excavation or ground subsidence have caused pipeline damage and fire accidents to occur from time to time. Due to the characteristics of the pipeline jet fire, the technical regulations require that the fire must be extinguished before the valve is closed for maintenance. However, the traditional fire extinguishing method of manually spraying dry powder fire extinguishing agent is not only dangerous, but also wastes a large amount of expensive fire extinguishing agent, and also produces secondary pollution after fire extinguishing, resulting in relatively large economic losses. Especially when a large-scale fire occurs in the main pipeline, it is difficult to extinguish the fire, which seriously affects ind...

AI Technical Summary

Problems solved by technology

However, the traditional fire extinguishing method of manually spraying dry powder fire extinguishing agent is dangerous and wastes a lot of expensive fire extinguishing agent, and also produces secondary pollution after fire extinguishing, resulting in large economic losses.

Especially when a large-scale fire occurs in the main pipeline, it is difficult to extinguish the fire, which seriously affects industrial production and people's daily life

When the annular dry powder fire extinguishing hood system is used, the injection port is installed asymmetrically, and the fire extinguishing hood is easy to fall when spraying the fire extinguishing agent; in addition, due to the limitation of the structure of the annular dry powder fire extinguishing hood system itself, it is difficult to concentrate the spraying of the fire extinguishing agent to the burning flame. In the area near the root, the fire suppression coverage is also limited

If it satisfies the need to effectively increase the fire extinguishing range, the volume of the system structure will be too large, which will bring inconvenience to transportation and hoisting

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