The working principle of sealing spare parts mainly includes the working principle of static seals and dynamic seals.
Working principle of static seals
Static seals are mainly used to seal static interfaces, such as flanges, threads, etc. They prevent liquid or gas leakage in a static state through their own elastic or viscous materials. Common static seals include rubber gaskets, metal flat gaskets and O-rings. These seals need to be fastened at the interface during installation to prevent liquid or gas leakage by cutting off or adsorbing.
Working principle of dynamic seals
Dynamic seals are used to seal moving interfaces, such as shaft seals, piston seals, etc. They need to maintain the sealing effect in a moving state, mainly relying on their own elasticity, high wear resistance and good lubrication performance to adapt to the moving state of the equipment. Common dynamic seals include V-shaped seals, U-shaped seals and Y-shaped seals. These seals need to be pre-compressed during installation to produce sufficient elasticity and wear resistance while maintaining a good sealing effect.
Working principle of mechanical seals
Mechanical seals are devices that prevent fluid leakage. Relying on the elastic force provided by the elastic element, the compensation ring fits tightly against the end face of the non-compensation ring to form the initial closing force of the sealing end face. When the main engine is filled with pressure medium and starts working, the sealing end face generates a closing force to achieve the sealing of the fluid. The mechanical seal consists of a compensation ring, a compensation ring auxiliary sealing ring, an elastic element, a transmission part, etc. The sealing effect is achieved through the cooperation of these components.
