对于唇口角度，随着唇口角度的增加，对减少往复过程的泄露量有较大的帮助，

对于唇口角度，随着唇口角度的增加，对减少往复过程的泄露量有较大的帮助，但是随着唇口角度的增加，V型密封圈唇口顶部单元的应力数值会大幅增大，使该位置更容易发生破坏。在相关论文[1]中一共用到到三组唇口角度，分布为0°、2°和4°；为了保证V圈的性能，选择V圈的唇口角度为2°。

For the lip angle, with the increase of lip angle, it is of great help to reduce the leakage in the reciprocating process. However, with the increase of lip angle, the stress value of the unit at the top of the lip of V-shaped seal ring will increase greatly, making this position more prone to damage. In the related paper [1], three groups of lip angles are used, which are distributed as 0 °, 2 ° and 4 °; In order to ensure the performance of V-ring, the lip angle of V-ring is 2 °.

As for the lip angle, with the increase of lip angle, it is helpful to reduce the leakage in the reciprocating process. However, with the increase of lip angle, the stress value of the top unit of V-shaped sealing ring lip will be greatly increased, which makes the position more likely to be damaged. In related papers [1], there are three groups of lip angles, which are 0, 2 and 4. In order to ensure the performance of V-ring, the lip angle of V-ring is 2.