Intelligent control system and method for anti-freezing water supply in fire protection of highway tunnel in cold region

Abstract

The invention discloses an intelligent control system and method for anti-freezing water supply in fire protection of a highway tunnel in a cold region. A heating water tank is connected with a circulating pump, a water outlet of the circulating pump is provided with a first check valve, a water inlet of a fire pump and a water inlet of a pressure maintaining pump are communicated with a fire pool, a surge tank is connected with the pressure maintaining pump in series, a second check valve and a pressure controller are arranged between the surge tank and the pressure maintaining pump, and a water outlet of the surge tank and a water outlet of the fire pump are provided with a third check valve and a fourth check valve respectively; an outlet of the first check valve, an outlet of the thirdcheck valve and the fourth check valve are communicated with a water inlet of a fire pipe; the fire pipe is divided into two paths, and the two paths of the fire pipe are arranged in a left tunnel hole and a right tunnel hole respectively and are communicated at the other end of the tunnel; a pressure reducing valve is connected between an electric three-way valve and the heating water tank; an electric heating pipe, water temperature monitors, a liquid level meter, a deep-well pump, the electric three-way valve, the circulating pump, the pressure controller, the pressure maintaining pump, the fire pump and the surge tank are connected with a control cabinet. The intelligent control system and method can effectively solve the problem that fire water freezes easily, and electric energy issaved.

Description

technical field [0001] The invention relates to the technical field of tunnel fire safety, and is used to solve the problem that the fire water of road tunnels in cold regions is easy to freeze, and in particular relates to an intelligent control system and method for fire prevention and antifreeze water supply of road tunnels in cold regions. Background technique [0002] As one of the effective methods to prevent the scale expansion of road tunnel fire accidents and the occurrence of secondary disasters, the water fire fighting system is widely used. At present, the most widely used high-level pool as a fire-fighting pool is to use the height difference to directly supply water to the fire-fighting system in the tunnel. However, due to the steep terrain and complex terrain of some highway tunnels, it is difficult to transport construction materials and difficult to install pipelines, making it difficult for high-level pools to meet the requirements. , At the same time, the...

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Problems solved by technology

Although the filling of antifreeze liquid prevents freezing, the initial investment cost and operating cost of heat insulation and heating are exempted, but this method requires that the antifreeze liquid has a low freezing point and is non-corrosive to the pipeline. Toxic, in addition, it does not have flammability and flammability, it is still difficult to meet all requirements

[0005] At present, the antifreeze of pipeline heat tracing system is mainly based on heating cable, which has a high degree of commercialization and is flexible and flexible. Although it can meet the antifreeze requirements of different pipelines, it has a large initial capital investment, high use cost, and short service life. Less availability in a tunnel environment

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