管接头在液压系统中管接头起到很重要作用，如果因为管接头造成泄漏的话不仅导致效率降低，还会导致油温升高、执行机构不稳定，污染环境等。甚至直接影响液压设备的正常使用，那么如何提高接头体的密封的可靠性呢？首先我们得要了解卡套式管接头的密封原理。

Pipe joint plays a very important role in the hydraulic system. If the pipe joint causes leakage, it will not only reduce the efficiency, but also lead to high oil temperature rise, unstable actuator and environmental pollution. Even directly affect the normal use of hydraulic equipment, so how to improve the reliability of the joint [[[body]]] seal? First of all, we need to understand the sealing principle of bayonet type pipe joint.

卡套式管接头的密封原理

在卡套右端需将螺母拧紧顶压下，左端被挤进接头体内锥孔与管子间的间隙里，使卡套的外锥面形成锥面接触密封，将卡套的内刃口嵌入钢管外壁，在钢管的外壁压出一个闭口环槽起切入密封，进一步拧紧螺母，使卡套中部稍微凸起，产生弹性变形，弹性应力使卡套右端面与螺母锥面产生摩擦力，以防螺母松动，弹性变形部分可吸收液压管道中的震动，另外，卡套尾部也紧抱钢管形成一道抵触密封。

At the top of the card sets of right side need to tighten nut under pressure, the left is squeezed into the connector [[[body]]] cone hole and the gap between the pipe, the card sets of male cone form taper contact sealing, the card sets of embedded inside edge of the outer wall of steel pipe, in the walls of the pipe pressure out of a cut into the seal ring groove, further tighten the nut, the card sets of central bulge slightly, produce elastic deformation, the elastic stress make the card right face and nut cone produces friction, in case of nut loose elastic deformation part can absorb vibration of hydraulic pipeline, in addition, the card sets of tail also clasp steel pipe forming a seal.