The fairing rings are built in the inlet and outlet of the vertical parts of inverse U bend respectively in order to restrain the effect of bend on the flow in it.
在倒U型管垂直段的两端内分别放置一个整流环，来消除入口弯头对垂直段流动的影响。
2
The space (11) is equipped with bend tube (17), the outer cylinder and the inner cylinder are opened with hole (5) which is equipped with water inlet pipes.