The butterfly valve damper is a vibration control device sensitive to displacement.
The electric butterfly valve is mainly used for anti vibration of pipelines and equipment in nuclear power plants, thermal power plants, chemical plants, steel plants, etc. It is often used to control fluid vibration excitation (such as fluid pulsation, two-phase flow, high-speed airflow, wind vibration, etc.).
The electric butterfly valve of butterfly valve is to pre compress the butterfly valve through damping, initial force stiffness and butterfly valve to reduce or eliminate other causes caused by media flow, air pipeline, water hammer (or hammer) and seismic periodic vibration or instantaneous impact damping butterfly valve electric butterfly valve, which can improve the natural frequency of the price of the electric butterfly valve of the vibration pipe hanging butterfly valve, The interference caused by the forced vibration frequency of the pipeline can avoid the resonance phenomenon of the pipeline and reduce the additional stress caused by the pipeline vibration.
The specification of the valve butterfly valve depends on the selection of anti vibration force to prevent pipeline vibration. If the vibration force calculated through pipeline dynamic analysis can be based on the rigidity of the pipeline and the external pipeline cycle or affect the quality, the initial force butterfly valve preloading shall be determined according to the accurate calculation of the damping butterfly valve specification. Otherwise, the specification of the damping butterfly valve can be selected according to the nominal diameter of the pipe.
When the electric butterfly valve extends, the wheel is far away from the body, and the electric butterfly valve extends. At this time, the piston of the electric butterfly valve moves upward. The oil pressure in the upper chamber of the piston rises, the circulation valve closes, and the oil in the upper chamber opens the extension valve and enters the lower chamber. The shock absorber is a device that can change the interference force of the vibration source or the transmission characteristics of the system to reduce vibration.
Barrel shock absorber is widely used in automobile suspension system. It can damp the compression and tension stroke. It is called two-way interactive electric butterfly valve. New types of shock absorber are adopted, including gas filled shock absorber and resistance adjustable shock absorber. The working principle of the bidirectional cylinder shock absorber is expounded. When the stroke is compressed, the wheel is close to the body, the electric butterfly valve is compressed, and the piston moves downward on the electric butterfly valve.
The volume of the lower chamber of the piston decreases, the oil pressure rises, and the fluid flows through the chamber above the piston. The upper chamber is a part of the space occupied by the piston rod, so the volume of the upper chamber is smaller than that of the lower chamber. Some of the oil pushes the compression valve back onto the oil tank. These valves save oil and create the damping force of the suspension under compression.