Fixed high pressure water smoke fire-extinguishing system

Abstract

The invention belongs to the fire fighting unit. It conquers the problems of the prior art and attains a environment friendly self fire extinguishing with safety, highly efficiency and broad application range. It comprises sea water, fresh water hydraulic pump and electromagnetic switch valve(3) provided in order in terms of the inlet, a water tank(5), a hand switch(11), a filter(12), a parallel arranged electromagnetic switch valve(14) and a hand valve(13). A overflow valve(17), a pressure gauge(18), a parallel arranged two-positions two-passage electromagnet/hand reversing valve group(24), and pipe network formed by a plurality of high pressure mist spray nozzles(25) with pipelines are installed on the outlet of the sea water, fresh water hydraulic pump. A temperature induction detector and/or smoke induction detector are installed on the pipe network region, which can start and stop the system operation by the control device. The system can not only employ the fresh water and sea water as fire extinguishing medium, but also can be acted as a local safety system, a subarea protection system or complete submerged protecting system.

Description

technical field [0001] The invention belongs to a fire fighting device. Background technique [0002] Halon fire extinguishing system (translated as halon) is a highly efficient and low-toxic fire extinguishing system widely used in the world, but the use of halon fire extinguishing agent will greatly deplete the ozone layer. The 1987 United Nations Environmental Protection Convention "Montreal Convention" clearly stated that all countries in the world are required to eliminate fire extinguishing systems that use halon (ie halon, such as 1211, 1301, etc.) as fire extinguishing agents at the beginning of the 21st century. Therefore, the domestic and foreign fire protection industry has a very urgent demand for an efficient and environmentally friendly new fire protection system that can replace halon. [0003] In addition to halogenated alkanes, other gas fire extinguishing systems such as carbon dioxide and inert gas are commonly used. These gas fire extinguishing systems a...

AI Technical Summary

Problems solved by technology

However, due to the low working pressure, insufficient water atomization, high water consumption, and low fire extinguishing efficiency; due to the use of gas (nitrogen) and liquid (water) two-phase media for fire extinguishing, it still has the disadvantage of poor safety of gas fire extinguishing systems. Occasions limit its application; due to its single pipe network structure and limited capacity of high-pressure gas cylinders, its continuous fire extinguishing time is short, and it is only suitable for local small-scale fire protection

[0005] Figure 5 The hydraulic pump-driven medium-pressure single-fluid water mist fire extinguishing system developed for Nanjing Fire Equipment Factory, the working pressure of the pump unit is 3.5MPa. Although this system overcomes the poor safety and short continuous fire extinguishing time of the gas-liquid two-fluid water mist fire extinguishing system Insufficient, but due to the low working pressure of the components used, there are still shortcomings of insufficient water atomization, large water consumption, and low fire extinguishing efficiency, and the structure of its nozzle pipe network is only suitable for one or more smaller Area for fire protection

Images