Product standard: GB12238
Nominal pressure: PN1.6MPa
Nominal diameter: -2000mm DN300
Suitable temperature: less than or equal to 600 DEG C
Seal vice: hard seal, soft seal
Sealing leakage: GB/T13927
The valve is opened by hydraulic pressure, close to the spring energy storage, the closing time of 0.5-1 seconds adjustable. The utility model can be widely used in power plants, thermal power plants and blast furnace TRT devices to protect the functions of steam turbine, generator and pipeline equipment. Control principle of Quick Closing Butterfly valve.
Emergency cut-off valve control principle
In September 28, 2000 the state power company issued a "power to prevent major accidents in twenty-five key requirements", the provisions of article 9.1.10: steam extraction unit must be set up for the emergency shut-off valve accident quickly closed, to prevent steam turbine protection caused by steam turbine overspeed intrusion. Tieling special valve Limited by Share Ltd developed emergency shut-off valve to quickly shut down production in 0.5~1 seconds, effectively prevent the steam turbine overspeed problem caused by intrusion. Emergency shut-off valve is mainly composed of the valve body, cylinder spring actuator, hydraulic control box, electric control box, etc.. When the valve is open, press the button or open the valve system (remote control electric control box is set), hydraulic control box, hydraulic oil into the cylinder bottom pushing oil cylinder drives the valve opening, while the spring compressed storage; when steam turbine emergency occurs through hydraulic signal or signals pass or electric control system the hydraulic valve, the rapid closure of the valve under the action of the spring, the closing time for 0.5~ seconds, so as to protect the turbine and the role of pipeline equipment.
Main dimensions, dimensions and dimensions
