Closed Foam-Water Spray Device Parameters

Overview

Closed foam-water sprinkler is a kind of fixed fire extinguishing equipment with high fire extinguishing efficiency and wide application range. Suitable for use in buildings and structures where flammable liquids can be installed in a water spray protection system.

The product implementation standard is GB 20031-2005 "General technical conditions for foam fire extinguishing systems and components".

Application range

Applicable to dangerous goods warehouses, garages, hangars, parking lots, chemical plants, boiler houses, petrochemical enterprises, metallurgical enterprises and other places. In addition, fires of Class A fires of common substances, as well as fires of rubber, plastics, synthetic fibers, etc., also have a good extinguishing effect.

Composition of

It is mainly composed of foam liquid storage tank, foam proportional mixer, pressure relief valve, foam liquid control valve, wet alarm valve, water flow indicator, closed sprinkler, pipe and fittings.

Working principle

The ambient temperature of the system protection area rises due to fire, reaching the operating temperature of the closed nozzle , causing the nozzle to open the water spray, the water flow indicator acts, the wet alarm valve is opened, and the pressure water passes through the alarm shut-off valve, through the retarder, enter the alarm pressure relief pipeline, the hydraulic alarm bell starts the alarm, the pressure switch acts, activates the fire pump, and pressurizes the water supply to the system pipe network. At the same time, the pressurized water passes through the water supply valve of the pressure relief valve, opens the pressure relief valve , depressurizes the pressure water in the control line, and the foam liquid control valve automatically opens. The capsule foam tank is squeezed by the pressurized water from the foam tank water supply line, allowing the foam liquid in the bladder to pass through the foam control valve and from the main line into the foam proportional mixer The water is mixed to form a foam mixture which is sprayed through the open sprinkler to extinguish the fire.

Model	Working pressure range (MPa)	Mixed liquid flow (L/s)	mixing ratio(%)	Storage tank storage (L)	Mixer inlet and outlet pressure loss (MPa）
ZPS32/700	0.5～1.2	4～32	3或6	700	<0.2
ZPS32/1000				1000
ZPS32/1500				1500
ZPS32/2000				2000
ZPS32/3000				3000

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