The shock absorber is an elastic element connecting the equipment and the foundation to eliminate and reduce the vibration force transmitted from the equipment to the foundation and the vibration transmitted from the foundation to the equipment.
An elastic support that isolates the system from the steady foundation. When the excitation frequency is lower than the natural frequency of the mass (equipment) ball valve system, the shock absorber does not play the role of vibration isolation; When the excitation frequency is close to the natural frequency, the vibration will be amplified; Only when the excitation frequency is greater than the square root of the natural frequency, the shock absorber can have the effect of reducing vibration. Generally, the excitation frequency is required to be 2~3 times greater than the natural frequency in order to obtain good vibration isolation effect.
Specific forms include: steel ball valve shock absorber, shock absorber, air ball valve, shock pad, metal shock absorber and various composite shock absorbers.
Appropriate equipment support shall be provided during use. The selection of model and quantity shall not only ensure that it can bear the dynamic load of equipment, but also maintain a small vibration transmission coefficient (ratio of transmission force to interference force). The following factors must be considered when designing and applying the shock absorber:
(1) It can provide the required amount of vibration reduction; (2) Be able to bear the specified load; (3) Be able to withstand the change of temperature and other environmental conditions (temperature, corrosive fluid, etc.); (4) It has certain damping characteristics; (5) Meet the requirements for the weight and volume of the shock absorber for the equipment using the shock absorber.