the introduction of the characteristics of hydraulic control butterfly valve structure

hydraulic control butterfly valve is more advanced pipeline control equipment at home and abroad, mainly installed in the hydraulic turbine inlet, used as a water turbine inlet valve; Or installed in water conservancy, electric power, water supply and drainage and other kinds of pumping station pumps export, replace the function of the check valve and gate Industrial Valves. Work, valves and piping host to cooperate, in accordance with the principle of the transient process of water through the preset opening and closing procedures, effectively eliminate the pipeline water hammer, realize reliable cutoff of piping, play a role to protect the safety of pipeline system.

small hydraulic control butterfly valve flow resistance coefficient, high automatic degree, complete function and stable performance.

CNC butterfly valve main characteristics are as follows:

a. Could replace the water pump outlet gate valve and check valve function, and the machine, electricity, liquid systems integration as a whole, reduce the area and infrastructure investment.

b。 Electro-hydraulic control function is all ready, do not need additional configuration can be as an independent system of single local debugging, control; Can also be used as a distributed control system ( DCS） An equipment units, by the central computer through the I/O channels for centralized management, and water pumps, turbine, bypass Industrial Valves and other pipeline equipment to realize linkage operation; When there is no power supply and equipped with manual function, can also realize manual open and close the valve, satisfies the requirement of special working conditions of debugging, the control valve.

C。 Good controllability, the adjusting range is big, strong adaptability. Electro-hydraulic control system is equipped with several control points, can be in accordance with the requirements of different pipeline control for opening and closing procedures set, guarantee in the valve open and close condition, the valve automatically according to the preset time, Angle opened and closed fast and slow two stages. And can achieve without electricity shut valve, effectively eliminate the destructive water hammer, to prevent the pump and turbine units runaway accident, reduce the pressure fluctuation of pipeline system, ensure safe and reliable operation of the equipment.

d。 The main valve seal for triple eccentric metal seal or double eccentric rubber sealing structure, opening and closing relaxed, reliable sealing, and there is a additional increase of eccentricity, the valve has good self closed, since the sealing performance. Medium and small butterfly plate designed to streamline plate structure, large diameter butterfly plate designed double plate girder structure, crowd out small, smooth flow, flow resistance coefficient of valve is only 0. 1 to 0. 6, far less than the flow resistance coefficient of check valve ( 1. 7 ~ 2. 6) , energy saving effect is obvious.

hydraulic control butterfly valve according to the energy storage type control system is divided into heavy hammer ( Figure 2 - 31) And the accumulator type ( Figure 2 - 32) Two major categories, the main valve from the valve body, disc, valve shaft, sliding bearing and seal assembly parts.

heavy hammer body adopts horizontal structure, with half shaft valve spindle structure.

accumulator type generally adopts horizontal layout; Also can according to user requirements with vertical layout.

transmission mechanism is mainly composed of the hydraulic cylinder, rocker arm, support plate ( Heavy hammer and hammer, leverage, locking cylinder, etc. ) Connection, transmission parts, hydraulic power, main executive body of the valve.

the driving hydraulic cylinder has a fast closing time on the closing time regulating valve regulating valve, slow and fast, slow clearance Angle valve.

hydraulic station including unit pump, manual pump, accumulator, electromagnetic valve, relief valve, flow control valve, cut-off valve, hydraulic integrated block, fuel tanks and other components.

heavy hammer type automatic pressure maintaining system, the accumulator as compensation for the system pressure.

a heavy hammer type automatic pressure maintaining locks to finalize the design system, the pressure accumulator is used as the system of compensation and the back of the lock cylinder lock.

accumulator type system, the two as spare accumulator, to provide the valve opening and closing the main power source.

flow control valve is used to adjust the valve opening and closing time.

manual pump for system debugging and special conditions of opening and closing of the valve.

electromagnetic directional valve control hydraulic system characteristics generally positive role models, namely electromagnetic valve power supply open butterfly valve, butterfly valve closed; The opposite to reaction type, namely the electromagnetic valve open loss of electric butterfly valve, power supply butterfly valve. Form a complete set of conventional electromagnetic directional valve is positive role model, USES the reaction type should be when ordering.

the hydraulic system and the valve body can be integrated installation, also can be installed separately. Users do not make special instructions for the integral installation.

accumulator type using vertical arrangement are split type installation.

are present in just about every facet of modern life.
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