A pressurized fire fighting system

Abstract

The invention relates to the technical field of water firefighting, and particularly relates to a ship firefighting pipeline system. In the system, a seawater / fresh water pressure tank for supplying domestic water or water for equipment on a ship and a water supply pump are adopted as a pressure tank and a water supply pump of a firefighting system, thus the purchasing cost and maintenance cost of the equipment are saved, and the cabin space occupied by the equipment is reduced; moreover, the start of a fire pump is controlled by a flow signal switch; and when a discharge device discharges water outside, the flow signal switch starts the fire pump, and the start time of the fire pump is shortened.

Description

technical field [0001] The invention relates to the technical field of water firefighting, in particular to a ship firefighting pipeline system. Background technique [0002] Requirement 2.1.2 / .1.1 of SOLAS Chapter II, Regulation 10 for Fire Fighting: Passenger ships of 1,000 gross tonnage and upwards have at least one effective jet of water immediately from any fire hydrant in an interior position , and ensure continuous water discharge from one of the required automatically activated fire pumps; and 2.1.6 Pressure requirements for fire hydrants: [0003] For passenger ships: [0004] 4,000 total and above 0.4N / mm 2 [0005] 0.3N / mm below 4,000 total 2 [0006] Summarizing the existing design requirements of the fire protection system meeting the above passenger ship requirements, there are the following two design forms: [0007] Design Form 1: Procure a special fire pressure water tank and a water supply pump for the water supply to the fire pressure water tank. sp...

AI Technical Summary

Problems solved by technology

However, the design and purchase of special fire-fighting pressure water tanks and water supply pumps will directly increase the cost of equipment procurement, and also increase the space inside the cabin occupied by the water fire-fighting system

Moreover, since the fire pressure water tank generally uses compressed air to inflate and store pressure, after most of the water in the fire pressure water tank flows out, the water pressure in the fire main pipe drops to the fire pump starting pressure setting value, and the pressure switch is activated at this time. The fire pump, resulting in a delay in the start-up time of the fire pump, taking up valuable firefighting time

[0010] For design form 2, since the seawater pump (such as air-conditioning seawater pump) that also supplies water to the fire pipeline does not need to work 24 hours a day under normal conditions; but because the seawater pump needs to supply water to the fire pipeline 24 hours, The original system of the seawater pump also works uninterruptedly for 24 hours, which leads to a waste of energy and accelerates the mechanical wear of the seawater pump

At the same time, there is also the problem that the start time of the fire pump is relatively lagging, which takes up precious fire fighting time.

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