Closed foam water spraying system

Abstract

The invention provides a closed foam water spraying system. The system comprises a plurality of spraying subsystems, a plurality of valve bodies and a control device, wherein liquid outlets of a water spraying module, a main foam module and a standby foam module of each spraying subsystem are connected with a spraying pipe network through a proportional mixer respectively, and a driving pump is arranged at the liquid outlet of each water spraying module; liquid inlets of the main foam module and the standby foam module and the liquid outlet of the water spraying module respectively communicate with a stock solution conveying pipeline; the plurality of valve bodies are in a normally closed state; the control device is used for controlling the second valve body and the driving pump to be opened when a fire occurs in the area where the corresponding spraying subsystem is located, controlling the fourth valve body and the sixth valve body to be alternately opened to extinguish fire, and controlling the third valve body, the fifth valve body and the seventh valve body to be linked to supplement the foam stock solution in the fire extinguishing process; and after fire extinguishing is finished, the first valve body, the seventh valve body and the driving pump are controlled to be linked to clean the stock solution conveying pipeline. The closed foam water spraying system has the beneficial effects of meeting the fire extinguishing requirements of different fire behaviors, prolonging the service life of the pipeline and saving the fire engineering cost.

Description

technical field [0001] The invention relates to the technical field of fire fighting, in particular to a closed foam water spray system. Background technique [0002] The closed foam water sprinkler system is a type of automatic sprinkler-foam combined fire extinguishing system. It adds a foam liquid supply device on the basis of the original wet automatic water sprinkler system. The whole system is usually on alert. Once the protected object catches fire, the system can quickly spray foam to cover the protection area to prevent the fire from spreading and control the fire. Fire, and then use fire water to extinguish the fire to prevent the fire from re-igniting. [0003] The existing closed foam water spray system has the following problems: [0004] 1. The foam stock solution is provided through the foam liquid supply device, but the storage capacity of the foam stock solution is limited, and it is difficult to meet the fire extinguishing demand in the case of a large fi...

AI Technical Summary

Problems solved by technology

[0004] 1. The foam stock solution is provided through the foam liquid supply device, but the storage capacity of the foam stock solution is limited, and it is difficult to meet the fire extinguishing demand in the case of a large fire;

[0005] 2. When extinguishing a fire, due to the flowing foam liquid or foam water mixture in the spray pipe of the system, it is easy to cause certain corrosion to the pipe after long-term use. The existing closed foam water spray system lacks the protection of the spray pipe. cleaning after use

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