Hydraulic seals sports complex effects

??The contact pressure of the hydraulic seal with the sealing surface displacement changes arising from fluctuations in contact pressure with medium pressure pre-compression rate increases linearly with increasing velocity has little effect on the contact pressure, the contact pressure with the velocity curve volatility medium pressure pre-compression rate increases; between the hydraulic cylinder seals and dynamic sealing performance of the contact surface of the contact surface between the superior hydraulic seal and piston; hydraulic seal dynamic sealing performance is better than pushing away return; pre-compression ratio less than 10%, hydraulic seals can not meet the requirements of the dynamic seal hydraulic gas distribution system, to ensure that the hydraulic sealing ring, you need to select a reasonable pre-compression rates.

??For hydraulic seal design use, rely on traditional principles and engineering experience in most cases. With the development of society, all kinds of hydraulic transmission fluid sealing ring increasingly high performance requirements, traditional methods can not meet the hydraulic seal design requirements for use.

??Hydraulic seals at high speed reciprocating motion condition condition is very complex, resulting in motion the process of hydraulic seal contact pressure changes in complexity, so has the importance of high-speed movement of the hydraulic reciprocating seal dynamic sealing characteristics were studied .

??When the piston is pushed away, cylinder, piston ring friction on the right, with the same effect on the fluid medium seal forces. Under media pressure and friction together, the left side of the hydraulic piston seals in contact with the left side surface of the recess and generates a corresponding deformation; the greater the media pressure, the more severe deformation, to squeeze into the gap between the piston and the cylinder of the more seals.

When the piston is in return, cylinder, piston ring friction on the left, and the role of the fluid medium in the ring opposite force. When the fluid medium is less than the force of the hydraulic cylinder seal, the friction of the piston ring, the ring surface in contact with the right side of the right side surface of the piston groove and generates a corresponding deformation; when the effect of the fluid medium to seal force is equal to the cylinder when the piston friction of the seal rings, the piston ring in the middle groove; when the fluid medium is greater than the force of the seal cylinder, piston friction seal.