SU1404404A1 - Outboard water supply system - Google Patents

Abstract

The invention relates to shipbuilding, in particular, to water fire extinguishing systems. The purpose of the invention is to simplify the system while maintaining it in constant readiness for action. For this, the pressure line 8 of the fire extinguishing system is hydraulically connected to the still active water system of the vessel through a non-return valve 4 and a throttle device 5 and has a pressure switch 11 controlled by a fire pump 1. 1 sludge.

Description

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The invention relates to shipbuilding and can be used in ship fire extinguishing systems.

The purpose of the invention is to simplify the system while maintaining it in constant readiness for action.

The drawing shows the principle hydraulic scheme of the proposed system.

The seawater supply system contains a pump 1, consumers 2, valves (butterfly valve 3, non-return valve 4, throttle device 5, non-return valve overboard valve 6), suction pipe 7, pressure pipe 8, pipeline 9 with zero flow, pipe 10 that performs - hydraulic communication with a permanently operating system, as well as a pressure switch 11.

The system works as follows.

In the initial position, pump 1 is turned off, the system is under pressure equal to the pressure in the permanently operating system, which is transmitted through conduit 10 by means of a throttle device 5 and a non-return valve 4. Since throttle device 5 is adjusted to supply water to the system less than the flow rate of any system user, then when commissioning any user 2, for example a fire valve.

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the pressure in the discharge pipe 8 decreases. When the setpoint pressure is reached, the pressure switch 11 starts up the pump 1. The outboard water from the suction pipe 7 is pumped through the rotary shutter 3 into the pressure pipe 8 and further to the consumers, while part of the water is drained overboard through the irretrievable valve 6 through the zero flow pipe 9. The non-return valve 4 prevents the entry of water with high pressure into the permanently operating system. After the end of the operation of the consumers of the system, the pump 1 is turned off manually, remotely or from the pump installation site, after which the system remains ready for action.

Claims (1)

Invention Formula A seawater supply system comprising a continuously operating water system and a water fire extinguishing system including a pump, an armature, a suction and a pressure pipelines, characterized in that, in order to simplify the system while keeping it ready for action The pressure pipeline is communicated with a permanently operating water system of the vessel through a non-return valve and a throttle device, and is also equipped with a pressure switch.