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Precautions for the use of pneumatic control valve


Release time:

2022-01-12

Today by Xinming automatic control valve industry to introduce to youPneumatic control valvePrecautions for use. Pneumatic control valve is to use compressed gas as the power source, cylinder as the actuator, and with the help of valve positioner, converter, solenoid valve, holding valve, gas tank, gas filter and other accessories to drive the valve to realize the switch or proportional adjustment, and receive the control signal of industrial automation control system to complete the adjustment of pipeline medium: flow, pressure, temperature, liquid level and other process parameters.

Precautions for the use of pneumatic control valve

Today by Xinming automatic control valve industry to introduce to youPneumatic control valvePrecautions for use.
Pneumatic control valve is to use compressed gas as the power source, cylinder as the actuator, and with the help of valve positioner, converter, solenoid valve, holding valve, gas tank, gas filter and other accessories to drive the valve to realize the switch or proportional adjustment, and receive the control signal of industrial automation control system to complete the adjustment of pipeline medium: flow, pressure, temperature, liquid level and other process parameters. Pneumatic control valve is characterized by simple control, fast response, and intrinsically safe, no need to take additional explosion-proof measures. Pneumatic control valve is one of the industrial process control instruments widely used in petroleum, chemical, electric power, metallurgy and other industrial enterprises. Usually by the pneumatic actuator and control valve connection after installation and commissioning of the formation of the combination instrument.
       Pneumatic control valveThe working principle of the pneumatic control valve is composed of the actuator and the regulating mechanism. The actuator is the thrust component of the regulating valve, which generates the corresponding thrust according to the size of the control signal pressure to push the regulating mechanism. The valve body is the regulating part of the pneumatic control valve, which is directly in contact with the regulating medium to regulate the flow of the fluid.
The use and characteristics of the pneumatic control valve is a right-angle rotary structure, which is used with the valve positioner to achieve proportional adjustment; V-shaped spool is suitable for various adjustment occasions, with a large rated flow coefficient and a large adjustable ratio. Good sealing effect, sensitive adjustment performance, small size, and can be installed vertically. Suitable for controlling gas, steam, liquid and other media. The pneumatic control valve is characterized by a right-angle rotary structure, which is composed of a V-shaped valve body, a pneumatic actuator, a positioner and other accessories; it has an inherent flow characteristic of approximately equal ratio; it adopts a double-bearing structure, small starting torque, and has Good sensitivity and induction speed; strong shearing ability.
The piston actuator of the pneumatic control valve uses compressed air as the power source, and the crank arm is driven by the movement of the piston to rotate 90 degrees to achieve the automatic opening and closing of the valve. Its components are: adjusting bolt, actuator box, crank arm, cylinder block, cylinder shaft, piston, connecting rod, cardan shaft. Simple control, rapid response, and intrinsically safe, do not need to take additional explosion-proof measures. The pneumatic control valve is powered by compressed air to realize the switch or proportional adjustment. The source uses the cylinder as the actuator and receives the control signal of the industrial automation control system to complete the adjustment of the flow, pressure, temperature and other process parameters of the pipeline medium.
Pneumatic control valve use matters needing attention:
The valve should be stored in a dry room, the passage should be blocked at both ends. No stacking for storage
② long-term storage of the control valve should be regularly checked to remove dirt, in the movement of the parts and processing surface should be coated with anti-rust oil to prevent rust.
The valve should be installed in the horizontal pipeline, the compulsory vertical installation. Stem up.
④ Required to be installed according to the direction of medium flow indicated by the arrow in the figure.
Above is the Xinming automatic control valve industry to introduce the relevant content.









 

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