What is the selection standard of pneumatic butterfly valve?
When the excited frequency of the pneumatic butterfly valve is close to the natural frequency, the vibration will be amplified; Only when the excited frequency is greater than the square root of the natural frequency, can the shock absorber have the effect of reducing vibration. The excitation frequency is usually requested to be 2~3 times greater than the natural frequency in order to obtain a good vibration isolation effect.
Detailed methods include: steel spring shock absorber, rubber shock absorber, air spring, rubber shock pad, metal rubber shock absorber and various composite shock absorbers.
Appropriate equipment support shall be provided during operation.
The selection of model and quantity shall not only ensure that it can bear the dynamic load of equipment, but also adhere to small vibration transmission coefficient (ratio of transmission force to interference force).
When designing and applying the shock absorber, the following elements must be considered:
(1) It can provide the required amount of vibration reduction;
(2) Able to bear the load of rules;
(5) Meet the requirements of equipment with shock absorber for the weight and volume of shock absorption.
(4) It has certain damping characteristics;
(3) Can withstand the change of temperature and other environmental conditions (temperature, corrosive fluid, etc.)?
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The metal compensator hose of the compensator is a pipe fitting that uses bellows as the central element to escort various fluids. Its working nature plays a compensation role in the connection between pipes, pipes and equipment, and equipment and equipment. The bellows pneumatic butterfly valve is a high-quality flexible pipe in modern working pipelines. It is made of thin-walled stainless steel seamless pipe or longitudinal seam welded pipe, The corrugated pneumatic butterfly valve formed by high-precision plastic processing has good flexibility and fatigue resistance due to the elastic characteristics of the corrugated pipe contour, which makes it easy to absorb the cyclic loads of various movements and deformations, especially in the pipeline system, which can compensate for large displacement,
Corrugated metal compensator hose has good flexibility, fatigue resistance, high temperature resistance, upper and lower temperature resistance, corrosion resistance and many other characteristics. Compared with other hoses, such as rubber hose and plastic hose, its service life is much longer, so it has high comprehensive economic performance. With the development of modern industry, the application range of corrugated pneumatic butterfly valve is becoming wider and wider, The operating conditions are becoming more and more complex. The bellows data are all subject to heat treatment. After the single type bellows tube is rolled and welded and the bellows is cold processed, the mechanical properties, high temperature resistance, corrosion resistance and overall flexibility of the bellows are affected by different levels. In order to ensure the bright and beautiful appearance of the pneumatic butterfly valve and eliminate residual stress,
To obtain a single austenitic structure and to consume high-quality pneumatic butterfly valves, it is necessary to adopt bright solution treatment method to deal with the above problems