Zhejiang Petrochemical Valve:The use and characteristics of pneumatic control valve

2018-06-13 Read:1848
      The human civilization is constantly improving, the national science and technology is developing at a high speed, and the enterprise innovation is changing with each passing day. Our Zhejiang Petrochemical Valve Co., Ltd. will do its utmost to make new contributions to the domestic and international customers for the national economic construction.
      1, the use and characteristics of pneumatic control valve:

      The utility model relates to a right-angle rotary structure, which is matched with a valve positioner and can realize proportional adjustment; the V-shaped valve core is most suitable for various adjustment occasions, has a large rated flow coefficient, large adjustable ratio, good sealing effect, and adjustment Sensitive, small size, can be installed in a vertical position. Suitable for controlling gases, vapors, liquids and other media.

      It is characterized by a right-angle rotary structure consisting of a V-shaped valve body, a pneumatic actuator, a positioner and other accessories; it has an inherent flow characteristic of approximately equal ratio; a double-bearing structure, small starting torque and excellent sensitivity And induction speed; superior shearing ability.

      2. The pneumatic piston actuator adopts compressed air as the power source. The movement of the piston drives the crank arm to rotate 90 degrees to achieve automatic opening and closing of the valve. Its components are: adjusting bolts, actuator box, crank arm, cylinder block, cylinder shaft, piston, connecting rod, universal joint shaft.

      3. Working principle of pneumatic regulating valve: The pneumatic regulating valve is composed of an actuator and an adjusting mechanism. The actuator is a thrust member of the regulating valve, which generates a corresponding thrust according to the magnitude of the control signal pressure, and pushes the adjusting mechanism to operate. The valve body is an adjustment component of the pneumatic regulating valve that directly contacts the regulating medium to regulate the flow of the fluid.

      Summary features: Pneumatic control valve is simple to control, fast in response, and intrinsically safe, no need to take additional explosion-proof measures. The pneumatic regulating valve is powered by compressed air, which realizes switching quantity or proportional regulation. The cylinder is used as an actuator to receive the control signals of the industrial automation control system to complete various process parameters such as regulating the flow, pressure and temperature of the pipeline medium.