fast closing butterfly Industrial Valves structure quickly close the valve installed on the steam turbine bleed line, blast furnace gas waste heat power generation device ( TRT） Admission line such as security rating system, for emergency cut-off valve; There was a crisis conditions in the system, at 0. 3 to 0. Within 8 s emergency valve, to achieve reliable truncation pipeline medium, effectively prevent the steam turbine rear steam and condensate flow backward or cut off the gas pipeline, protect the safety of the whole machine.

quickly close the valve by the main valve, gear and rack, oil cylinder actuator, hydraulic system, electric control system composed of five most. All parts of a highly integrated as a whole, the structure is compact, covers an area of space greatly saved.

the main valve for triple eccentric metal sealing butterfly valve ( Figure 2 - 33) , on the basis of the traditional double eccentric structure configuration unique Angle eccentric design, make full use of the CAM effect, make the valve opening and closing seal instantly, transient from contact, eliminates the friction and the crowded, wear small, high temperature resistant, easy and reliable sealing opening and closing. Gear rack transmission device structure is compact, directly connected to the cylinder, cylinder tail without buffer device, eliminate the inertial impact when fast shut, prolong the service life of the valve.

according to different fast shut power source, the hydraulic system is divided into spring energy storage fast shut and the accumulator energy storage fast pass two kinds big. Normal opening and closing of valve power supply generally provided by the hydraulic oil pump in the system unit, also can be derived from the steam turbine host supporting hydraulic station. Normal opening and closing speed is controlled by flow valve adjustment.

electrical control system according to the primary logic element class is divided into ordinary relay and PLC intelligent control, the factory supporting for general relay type commonly, need to type PLC intelligent control should be when ordering. System in addition to a normally open valve, normally closed valve, stop, quickly close the valve, such as regular control action, also set up a state of full open 15% itinerary & other; Swimming & throughout; Function, in order to avoid the valve jam.

with a local control loops in the system and remote control circuits. Local control loop is mainly used in commissioning, normal work is using a remote control circuits.

electromagnetic directional valve control hydraulic system features are generally positive role type, namely the solenoid valve power supply electric butterfly valve and butterfly valve open; The opposite of reaction type. Form a complete set of conventional electromagnetic directional valve is positive role model, USES the reaction type should be ordering.

system power source for AC380V, control power supply can be AC220V, DC100V or other power rating.

Over the years, has become very popular as more and more people are trying it out.
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double flanged gate valve is receiving a great positive feedback in the market. And many of our clients are fully satisfied with it.