阀门

阀门 Valve

1.1 阀杆、阀盖结构分类

1.1.1阀杆结构分类

阀杆按结构形式分为：暗杆内螺纹、明杆内螺纹、支架式明杆外螺纹。

Valve stem is divided into:inside screw non-rising stem,inside screw rising stem,rising stem outside screw and yoke.

图6.37 暗杆内螺纹 图6.38 明杆内螺纹

Fig 6.37 ISNRS (inside screw non-rising stem) Fig 6.38 ISRS (inside screw rising stem)

图6.39 支架式明杆外螺纹

Fig 6.39 OS&Y (rising stem outside screw and yoke)

1.1.2 阀盖结构分类

按阀盖结构形式分为：栓接阀盖；螺纹阀盖、活接阀盖、整体阀盖、压力密封阀盖。

图6.40 栓接阀盖 图6.41 螺纹阀盖 图6.42 活接阀盖

Fig6.40 Bolted Bonnet Fig 6.41 Screw Bonnet Fig6.42 Union Bonnet

图6.43 压力密封阀盖 图6.44 整体阀盖 Fig6.43 Pressure Seal Bonnet Fig6.44 Integral Bonnet

1.2闸阀 Gate Valve

1.2.1楔式闸阀 Wedge Gate valve

图6.45 螺栓连接阀盖明杆楔式单闸板闸阀

Figure6.45 Bolted bonnet rising stem single wedge Gate valve

1.阀体

2.阀座

3.闸板

4.阀杆

5.垫片

6.阀盖

7.螺栓

8.螺母

9.上密封座 10.填料 11.销轴12.活节螺栓 13.螺母 14.填料压套 15.填料压板 16.油杯 17.阀杆螺母 18.轴承压盖 19.手轮 20.手轮螺母

1.Body

2.Seat

3.Wedge

4.Stem

5.Gasket

6.Bonnet

7.Bolt

8.Nut

9.Back seat 10.Packing 11.Pin 12.Gland bolt 13.Nut 14.Gland 15.Gland flange 16.Lubricator 17.Stem nut 18.Retaining nut 19.Handwheel 20.H.W. Lock nut

DN≤100

图6.46 压力自密封阀盖明杆楔式单闸板闸阀

Figure6.46 Pressure seal type bonnet rising stem single wedge Gate valve

1.阀体

2.阀座

3.闸板

4.阀杆

5.阀盖

6.密封环

7.垫环

8.四开环

9.牵制环 10.螺钉 11.螺母 12.填料垫 13.销轴 14.卡箍 15.填料压板 16.活节螺栓 17.螺母 18.支架 19.螺栓

20.阀杆螺母 21.齿轮箱 22.填料压套 23.填料 24.螺栓 25.螺母

1.Body

2.Seat

3.Wedge

4.Stem

5.Bonnet

6.Sealing ring

7.Space ring

8.Segment ring

9.Supporting plate 10.Bonnet net 11.Bonnet net 12.Packing plate 13.Pin 14.Split ring 15.Gland flange 16.Gland bolt 17.Gland nut 18.Yoke 19.Bolt 20.Stem nut 21.Gear box 22.Gland 23. Packing 24.Bolt 25.Nut

图6.47 低温楔式单闸板闸阀

Fig 6.47 Cryogenic single wedge Gate valve

1.阀体

2.阀座

3.闸板

4.阀杆

5.垫片

6.阀盖

7.螺栓

8.螺母

9.上密封座 10.填料 11.销轴12.活节螺栓 13.螺母 14.填料压套 15.填料压板 16.油杯 17.阀杆螺母 18.轴承压盖 19.手轮 20.手轮螺母 1.Body 2.Seat 3.Wedge 4.Stem 5.Gasket 6.Bonnet 7.Bolt 8.Nut 9.Back seat 10.Packing 11.Pin 12.Gland bolt 13.Nut 14.Gland 15.Gland flange 16.Lubricator 17.Stem nut 18.Retaining nut 19.Handwheel 20.H.W. Lock nut

图6.48 螺栓连接阀盖明杆楔式双闸板闸阀

Fig 6.48 Bolted bonnet rising stem double wedge Gate valve

1.阀体

2.螺钉

3.垫圈

4.下托架

5.闸板

6.闸板架

7.顶心

8.阀座

9.销10.上托架 11.阀杆 12.螺栓 13.螺母 14.阀盖 15.垫片 16.填料 17.活节螺栓 18.螺母 19.填料压套20.填料压板21.支架 22.齿轮箱

1.Body

2.Bolt

3.Plate

4.Bracket

5.Gate

6.Support

7.Mandrel

8.Seat

9.Pin 10.Bracket 11.Stem 12.Bolt 13.Nut 14.Bonnet 15.Gasket 16.Packing 17. Gland bolt 18. Gland nut 19.Gland 20.Gland flange 21.Yoke 22. Gear box

1.2.2平板闸阀Flat Gate valve