Year1
- 温度范围：
- -196℃~538℃
- 压力蒸汽：
- 1Mpa-75Mpa
- 连接方式：
- 法兰式 对焊式
Imported high-pressure electric regulating valve
Imported high-pressure electric regulating valve, also known as high-pressure regulating valve, accepts the control signal output by the regulating control unit, and uses power operation to change the fluid flow. High-pressure electric regulating valves are generally composed of an actuator and a regulating valve body. According to the power used by its actuator, high-pressure electric regulating valves can be divided into three types according to their functions and characteristics: linear characteristics, equal percentage characteristics and parabolic characteristics. For the selection of high-pressure electric control valves, safety is mainly considered from three aspects: b. The characteristics of the medium and the quality of high-pressure electric control valves ensure safe use under high pressure. It is widely used in production automation control in industrial sectors such as electric power, metallurgy, chemical industry, petroleum, textile, pharmaceutical, papermaking and so on.
Imported high-pressure electric regulating valve body types
There are many types of valve bodies for high-pressure electric regulating valves. Commonly used valve body types include straight-through single-seat straight-through double-seat angular diaphragm small flow three-way sleeve type, etc.
When making specific selections, the following considerations can be made
The shape and structure of the valve core are mainly considered based on the selected flow characteristics and unbalanced force and other factors.
Abrasion resistance When the fluid medium is a suspension containing a high concentration of abrasive particles, the internal material of the valve must be hard.
Corrosion resistance Since the medium is corrosive, try to choose valves with simple structures.
Temperature and pressure of the medium When the temperature and pressure of the medium are high and vary greatly, a valve whose material of the valve core and valve seat is less susceptible to temperature and pressure changes should be selected. When the temperature and pressure are high, a radiator should be added.
Prevent flash evaporation and cavitation. Flash evaporation and cavitation only occur in liquid media. In the actual production process, flash evaporation and cavitation will cause vibration and noise and shorten the service life of the valve. Therefore, when selecting the valve, the valve should be prevented from flashing and cavitation.
Imported high-pressure electric control valve actuator
In order for the high-pressure electric control valve to work normally, the equipped actuator must have sufficient torque to ensure a high degree of sealing and the opening of the valve. For double-acting pneumatic-hydraulic electric actuators, there is generally no return spring. The size of the force has nothing to do with its direction of operation. Therefore, the key to selecting an actuator is to find out the maximum output force and the rotational torque of the motor. For single-acting pneumatic actuators, the output force is related to the opening of the valve. The force appearing on the regulating valve will also affect the motion characteristics. Therefore, it is required to establish a force balance throughout the opening range of the regulating valve. After determining the output force of the actuator, select the corresponding actuator according to the requirements of the process environment.
Parameters of high-pressure electric regulating valve
Valve trim features Cage guide Unbalanced trims Cage-pressure valve seat Quick-release structure Labyrinth gasket Valve cage combination
Valve body type Straight-through angle Style
Upper bonnet type Normal temperature standard type High temperature heat dissipation type Low temperature extension type
Temperature range~
Pressure steam
Stem seal type Ordinary type Standard packing seal High temperature type packing seal Bellows seal
Standard leakage level standard type, metal valve seat
Flow characteristics equal percentage straight line
Mode of action Electric opening type Electric closing type and pipeline connection method Flange type butt welding type Adjustable ratio
Origin brand Germany r Olschen
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