Extraction check pneumatic valve structure characteristics

extraction check pneumatic valve is contribute to many industries, and the biggest role is to protect the turbine generator set, because the operation of the steam turbine generator set of steam turbine load rejection may exist in the situation of the internal pressure suddenly drops, so the extraction check pneumatic valve, let the generating set is more secure.

extraction check pneumatic valve structure:
. Aimed at different temperature, the main material is carbon steel or steel, high temperature sealing surface carbide surfacing.
。 Pneumatic valve is equipped with damping heavy hammer, can balance the closed kinetic moment, prevent not hammer.
。 Is spring return type actuator cylinder or hydraulic cylinder, and with the pneumatic valve closing action is relatively independent, actuator failure does not affect the closing action.
。 Pneumatic valve seat sealing surface inclination Angle, reduce shut down time, lighten the impact, protect the security of the equipment itself and the pipe.
。 The design and manufacture ANSIB acceptance criteria adopted. , E or JB/T, strength and sealing performance completely conform to the standard needs, the vacuum pneumatic valve and vacuum test, the whole life to meet user requirements.
。 Pneumatic valve is designed for the rocker connection with pneumatic valve stem, but with pneumatic valve seal face since the rightness of, ensure the sealing face.
close open sets limit mechanism, avoid open a bit damaged.
。 Cylinder hydraulic cylinder wall coating wear-resisting corrosion resistant layer, can increase longevity, reduce resistance, pneumatic valve, flexible and reliable.
。 Equipped with pneumatic actuator, pneumatic valve switch position signal output valve open position on indicator.
。 Pneumatic valve body cavity with streamline design, flow capacity, reduce the resistance of pneumatic valve.

extraction check
advantages of pneumatic valve products, sealing surface surfacing Cr series stainless steel or cobalt-based hard alloy, have good wear resistance, stable and reliable sealing performance.
, when medium positive flow, cylinder inferior vena intake, together with a heavy hammer, pneumatic balance disc is located in the full open position. When the reverse flow of the medium, the cylinder piston inferior vena rapid pressure release, pneumatic disc in. Seconds down quickly.
, heavy hammer through extension rod and fork on the pin shaft, used to balance and rocker heavy torque and prevent the occurrence of water hammer. When the medium flows forward, help to open the pneumatic valve, and balance the pneumatic valves in the operation and reduce the vibration.