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NKJ61H真空截止阀主要结构特点及用途:
1、真空截止阀主体采用铸锻结构，具有平行双密封副半强制双向密封，密封到位运动和楔形块楔紧运动分步作用实现零泄漏。
2、真空截止阀密封面运动磨擦力小、启闭轻便，而且密封面磨损有自动补偿功能。
3、真空截止阀结构简单、紧凑、检修方便，使用寿命长。
4、真空截止阀阀盖填料室设有真空密封结构，具有自胀压紧作用，并且密封采用高强膨胀材料密封，使系统与大气完全隔离，具有很好的系统气密性。
5、真空截止阀连接形式分法兰、焊接两种，驱动方式有手动、电动两种。
该阀门适用于工作温度≤425℃和≤550℃，工作介质为水、蒸汽或空气的管路上，作为启闭装置；尤其适用于火电厂汽机冷凝和真空负压系统，起真空隔离密封作用。
真空截止阀阀门结构型式 Valve ctrucure type
NKJ61真空截止阀主要性能规范
产品类型
Product type |
壳体强度试验/MPa
Sheli strangth test |
上密封试验/MPa
Back seal test |
密封试验/MPa
Seal test |
适用介质
Applicable
medium |
适用温度/℃
Applicable
temperature |
| NKJ61H-40 |
6.O |
4.4 |
4.4 |
水、蒸汽、空气
Water、Steam、Air |
≤425 |
| NKJ61H-64 |
96 |
7.O |
7.O |
| NKJ61H-100 |
15.O |
11.0 |
11.O |
| NKJ61Y-40l |
6.O |
4.4 |
4.4 |
水、蒸汽、空气
Water、Steam、Air |
≤550 |
| NKJ61Y-64l |
9.6 |
7.0 |
7.O |
| NKJ61Y-1OOI |
15.O |
11.O |
11.O |
NKJ61H真空截止阀主要零件材料 Material for Main Parts
零件名称
Part name |
阀体、阀盖 Body Bonnet |
阀杆
Valve Stem |
阀瓣 Disc |
密封面
Sealing face |
阀杆螺母
Yokenut |
填料
Packing |
紧固件
Fasteher |
| NKJ61H-C型 |
25或WCB |
铬不锈钢
Crstain
mless
teel |
铬不锈钢
Crstain
mless
steel |
H：合金钢
H：alloy steel |
铝青铜
AI
bronze |
膨胀复合石墨
Expanding
compound
graphlte |
优质碳钢
High-grade
carbon
steel |
| NKJ61Y-l型 |
铬钼钢
Cr.Mo steel |
20CrlM01vA 或38CrMoAlA |
12CrlMo 1VA |
Y：硬质合金
Y:oarbide alloy |
铬钼钢
Cr.Mo steel |
NKJ61H真空截止阀主要尺寸及重量 Main dimensions and weight
公称通径
DN/mm
Nominal
diameter |
公称压力
PN/MPa
Nominal
pressure |
主要外形尺寸和连接尺寸/mm
Main extemal and connectingd mensions |
| L |
H |
D |
D0 |
D1 |
L1 |
α |
W |
| 1O |
4.0 |
130 |
245 |
36 |
11 |
18.4 |
1O |
- |
120 |
| 15 |
130 |
245 |
36 |
16 |
22.5 |
1O |
- |
120 |
| 20 |
150 |
265 |
44 |
21 |
28.5 |
11 |
- |
160 |
| 25 |
160 |
270 |
48 |
26 |
34.5 |
12 |
- |
200 |
| 32 |
180 |
285 |
48 |
34 |
- |
- |
37o30' |
200 |
| 40 |
200 |
320 |
55 |
40 |
- |
- |
37o30' |
240 |
| 50 |
230 |
365 |
64 |
48 |
- |
- |
37o30' |
320 |
| 65 |
290 |
41O |
82 |
66 |
- |
- |
37o30' |
300 |
| 80 |
31O |
430 |
95 |
78 |
- |
- |
37o30' |
300 |
| 100 |
350 |
470 |
117 |
1OO |
- |
- |
37o30' |
350 |
| 125 |
400 |
500 |
143 |
126 |
- |
- |
37o30' |
350 |
| 150 |
480 |
533 |
167 |
150 |
- |
- |
37o30' |
400 |
| 1O |
6.4 |
130 |
245 |
36 |
1O |
18.4 |
1O |
- |
120 |
| 15 |
130 |
245 |
36 |
15 |
22.5 |
1O |
- |
120 |
| 20 |
150 |
265 |
44 |
20 |
28.5 |
11 |
- |
160 |
| 25 |
160 |
270 |
48 |
25 |
34.5 |
12 |
- |
200 |
| 32 |
180 |
280 |
48 |
33 |
- |
- |
37o30' |
200 |
| 40 |
200 |
320 |
55 |
39 |
- |
- |
37o30' |
240 |
| 50 |
230 |
365 |
64 |
48 |
- |
- |
37o30' |
320 |
| 65 |
290 |
41O |
82 |
65 |
- |
- |
37o30' |
320 |
| 80 |
31O |
430 |
95 |
76 |
- |
- |
37o30' |
360 |
| 100 |
350 |
470 |
117 |
98 |
- |
- |
37o30' |
400 |
| 125 |
480 |
500 |
143 |
123 |
- |
- |
37o30' |
400 |
| 150 |
480 |
533 |
167 |
148 |
- |
- |
37o30' |
500 |
| 1O |
10.O |
130 |
245 |
36 |
1O |
18.4 |
1O |
- |
120 |
| 15 |
130 |
245 |
36 |
14 |
22.5 |
1O |
- |
120 |
| 20 |
150 |
265 |
44 |
20 |
28.5 |
11 |
- |
160 |
| 25 |
160 |
270 |
48 |
25 |
34.5 |
12 |
- |
200 |
| 32 |
180 |
285 |
48 |
32 |
- |
- |
37o30' |
200 |
| 40 |
200 |
320 |
55 |
38 |
- |
- |
37o30' |
240 |
| 50 |
230 |
355 |
64 |
48 |
- |
- |
37o30' |
320 |
| 65 |
290 |
41O |
82 |
63 |
- |
- |
37o30' |
320 |
| 80 |
31O |
430 |
95 |
74 |
- |
- |
37o30' |
360 |
| 1OO |
350 |
470 |
117 |
97 |
- |
- |
37o30' |
400 |
| 125 |
400 |
500 |
143 |
123 |
- |
- |
37o30' |
400 |
| 150 |
480 |
533 |
167 |
148 |
- |
- |
37o30' |
500 | | 
