球阀系列

 

球阀剖面图 Sectional Drawing of Gate Valve

 

 

球阀是由旋塞演变而来的,它的启闭件作为一个球体,利用球体绕阀杆的轴线旋转90o实现开启和关闭的目的。球阀在管道上主要用于切断、分配和改变介质流动方向。
Ball valve evaluates from the cock, the ball moves around the centre-axis of stem by 90o when it works and closes. It's mainly used in cutting off, distributing the flow and changing the direction of flow medium.

 

优点:
1、具有最低的流阻(实际为零)
2、关闭件能承受关闭时的高压差
3、可实现快速启闭,某些结构的启闭时间仅为0.05~0.1S,
      以保证能用于试验台的自动化系统中
4、结构紧凑,体积小,重量轻

Advantages:
1.Smallest resistance with the fluid (by zero in fact)
2.The ball is free to bear the high pressure when it closed
3.Quickly to open and close (some components need only 0.05s~0.1s),
    to be ensured to used in the automatic system of testing table
4.Tightly connected components, with small volume and light weight