High-pressure sprinkler water control valve

Abstract

The invention relates to a high-pressure sprinkler water control valve which can be controlled automatically or manually. The water control valve has a cylindrical shape, and has a pressure-driven piston structure. Water inlet and water outlet adopt Rc1'' interface, and a water supply flow reaches 300L / min. A sealing ring is fastened at a valve core water inlet side in a bushing by using a pressure plate. A water inlet interface and a water outlet interface are connected with a valve body water inlet and a water outlet through sealing gaskets. A filtering block is embedded in the valve body. An inclined-hole screw plug is fastened in an outlet section hole of the valve core. A spring is sleeved between the valve body and the valve core. O-shaped sealing rings are sleeved on valve core outer circle and water outlet interface inner hole. Under the effect of both inlet water thrust and the spring, the valve core is in a sealed state. When the valve is opened, pressurizing water is delivered into a driving chamber between the valve core and the valve body, such that the valve core moves towards the water inlet side under pushing and leaves a sealing cone, and water supply is turned on. The valve provided by the invention belongs to the field of fire extinguishing. With risk, a hidden danger of false water delivery during water pressure fluctuation due to the low rated working pressure of a common sprinkler alarm valve is solved, and impact damage of water hammer while opening / closing is reduced. The high-pressure sprinkler water control valve is composed of the valve body, the valve core, the water inlet interface, the water outlet interface, the sealing ring, the sealing gaskets, the pressure plate, the bushing, the O-shaped sealing ring, the spring, the filtering block, and the inclined-hole screw plug. The valve provided by the invention has wide application prospect in fields such as electric power, chemical industry, metallurgy, warehousing, and libraries and archives.

Description

technical field [0001] The invention relates to a new type used in the fire protection industry, with a rated working pressure of 16MPa, a nominal diameter of DN25mm, and a water supply flow rate of 300L / min. It is the core control valve in the high-pressure and medium-pressure water mist fire extinguishing system—a high-pressure deluge alarm valve, which belongs to the field of fire extinguishing. Background technique [0002] The existing deluge alarm valve has a low rated working pressure of 1.2MPa and 2.5MPa; material: cast iron / cast steel with low strength. It is not suitable for long-distance and multi-area fine water mist fire protection application requirements; the conventional deluge alarm valves are DN200 and DN150 in diameter, and the construction cost of the pipe network is relatively large and occupies a large space. [0003] The opening method of the traditional deluge alarm valve is decompression start: when the pressure in the control chamber decreases, the...

AI Technical Summary

Problems solved by technology

When the lever type deluge alarm valve is opened, the impact of the disc end on the valve body is huge, causing the valve body to break

When the diaphragm deluge alarm valve is working, the disc is not fully opened, and the water head loss is large. Usually, the diaphragm is stretched under pressure and is sensitive to sharp objects such as iron slag and small stones. It is easy to scratch and crack, and has a short service life.

Conventional deluge alarm valves cannot meet the spray control requirements of high-pressure water mist fire extinguishing systems, and are no longer suitable for escorting emerging industries

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