The reason why the seal of the corrugated compensator has gained popularity is shared.

Corrugated compensator in the process of use, ordinary mechanical seal often because of device fluctuations or operating processes and other reasons caused by pump evacuation phenomenon, when the existence of the dynamic ring seal ring so that the end face open can not be reset in a timely manner, and cause mechanical seal leakage, and the bellows machine seal in the structure eliminates the way of this seal failure. Almost unaffected by the pump evacuation, showing its good compensation and sex, in easy to evacuate the light hydrocarbon pump, decompression tower bottom pump and other pumps outstanding performance, this feature is an important reason for the popularity of the application of bellows seal.
 
The bellows compensator is the key component in the vacuum interrupter chamber. Only after using the metal bellows is it possible to make the moving contacts move with mechanical force from outside the vacuum interrupter chamber and keep the vacuum interrupter sealed outside. Every time the vacuum switch is turned on and off, the bellows is displaced to a large extent, and the large and frequent axial displacement can easily damage the bellows due to fatigue. The bellows is an important part of the vacuum interrupter shell, if it is damaged, the life of the vacuum interrupter chamber will be terminated by gas leakage. The other parts of the vacuum interrupter are not easily damaged in normal operation, so the fatigue life of the bellows also determines the mechanical life of the vacuum interrupter. In addition, the contact opening distance of the vacuum switch is equal to the actual axial displacement of the bellows. Therefore, the axial displacement of the bellows also determines the large contact opening distance that can be obtained.