Kwistjonijiet bżonn attenzjoni u okkażjonijiet ta ' pnewmatiċi għeluq valv

Pneumatic shut-off valve is a new safety supporting device for gas pipeline engineering, which is mainly connected with combustible gas leakage monitoring instrument. When the instrument detects gas leakage of combustible stainless steel insulation stop valve, it automatically and quickly closes the main gas supply valve, cuts off the gas supply, and timely stops the occurrence of malignant accidents; Connected with the limit temperature (pressure) safety controller of thermal equipment, when the temperature (pressure) of the detection point in the equipment exceeds the set limit value, the air supply valve will be automatically and quickly closed to stop the fuel supply; Connected with the central fire alarm system of high-rise buildings, when the building is in fire, the gas supply in the building will be cut off automatically to prevent the gas explosion; ZCR gas emergency shut-off valve is set in the gas supply network of the city or factory, which can be controlled centrally in the central control room and the pipeline gas supply on the accident site can be closed remotely and remotely.

Pneumatic shut-off valve is one of the actuator in the automation system, which can be widely used in the petroleum, chemical, metallurgical and other industrial production departments. The air source of pneumatic shut-off valve requires filtered compressed air. The medium flowing through the valve body shall be liquid and gas without impurities and particles.

Prekawzjonijiet għal l-użu ta' pnewmatiku tifi tal-mitf valv:

1. il pnewmatiku shut-off valve is in il normalment miftuħ stat in kuljum xogħol , u il - solenoid valve coil is in il power off state, u ma jikkunsmawx elettriku enerġija.

2. When the accident occurs, the valve coil of pneumatic shut-off valve is powered on momentarjaly, triggering the valve to close quickly and enter the self-locking state. At this time, even if the power supply is removed, the pnewmatic shut-off valve is still in self-locking state and not be opened awtomatikament again.

3. il pnewmatiku shut-off valve jadotta pilota valve disc, li huwa faċli biex miftuħ. Anke jekk il pressjoni tilħaq 6bar% 2c it huwa ħafna faċli biex miftuħ. Id-dijametru huwa akbar minn DN125. Lever manku huwa adottat biex tagħmel il- valv tilħaq il - swiċċ forza iffrankar u veloċi.

4. when the staff have finished handling the accident, the valve will be opened manually before the air supply can be restored.