| 机械密封件中“压力平衡”起到什么作用呢？ |
| 添加时间：2017/12/12 15:21:29 浏览次数： |
| 机械密封件中的压力平衡是指被密封液体的压力与密封面间接触压力的关系。东晟密封件告诉您在不平衡密封的场合。液体压力未被密封面的几何开关所减轻，以至于表面接触压力等于或大于液体压力（图1所示就是典型的不平衡密封及作用在不平衡密封件面的压力图）。 The pressure balance in a mechanical seal is the relationship between the pressure of the sealed liquid and the contact pressure between the sealing surface. Dongsheng seal tells you the situation of unbalance sealing. The liquid pressure is not relieved by the geometric switch of the sealing surface, so that the surface contact pressure is equal to or greater than the liquid pressure. (Figure 1 shows the typical unbalanced seal and the pressure diagram acting on the unbalanced seal surface). 而在机械密封件中平衡密封中会怎样呢？我们将其设计成使径向分布面积相结合，以至于有效接触压力始终小于液体压力（图2所示就是平衡密封及作用在平衡密封件面的压力图）。可如果按实际情况来看呢？通常我们都用选用能给出有效的密封性的很小的表面压力的。对机械密封件中的平衡密封件的直接优点就是密封面的摩擦减小（表面接触压力较小），从而发热的就较少，并降低了粘着磨损。这种密封还能适应比不平衡密封更高的压力。 And what about balancing the seal in a mechanical seal? We designed it to make the radial distribution area so that the effective contact pressure is always less than the liquid pressure. (Figure 2 shows the balance seal and the pressure diagram acting on the balance seal surface). But what if it is in accordance with the actual situation? Usually we use small surface pressures that give effective seals. The direct advantage of the balance seal in the mechanical seals is that the friction of the sealing surface is reduced (the surface contact pressure is small), so that the heating is less and the adhesive wear is reduced. This seal also adapts to higher pressure than an unbalanced seal. |
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