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NKJ61H真空截止閥主要結構特點及用途:
1、真空截止閥主體采用鑄鍛結構，具有平行雙密封副半強制雙向密封，密封到位運動和楔形塊楔緊運動分步作用實現零泄漏。
2、真空截止閥密封面運動磨擦力小、啟閉輕便，而且密封面磨損有自動補償功能。
3、真空截止閥結構簡單、緊湊、檢修方便，使用壽命長。
4、真空截止閥閥蓋填料室設有真空密封結構，具有自脹壓緊作用，并且密封采用高強膨脹材料密封，使系統(tǒng)與大氣完全隔離，具有很好的系統(tǒng)氣密性。
5、真空截止閥連接形式分法蘭、焊接兩種，驅動方式有手動、電動兩種。
該閥門適用于工作溫度≤425℃和≤550℃，工作介質為水、蒸汽或空氣的管路上，作為啟閉裝置；尤其適用于火電廠汽機冷凝和真空負壓系統(tǒng)，起真空隔離密封作用。
真空截止閥閥門結構型式 Valve ctrucure type
NKJ61真空截止閥主要性能規(guī)范
產品類型
Product type |
殼體強度試驗/MPa
Sheli strangth test |
上密封試驗/MPa
Back seal test |
密封試驗/MPa
Seal test |
適用介質
Applicable
medium |
適用溫度/℃
Applicable
temperature |
| NKJ61H-40 |
6.O |
4.4 |
4.4 |
水、蒸汽、空氣
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、空氣
Water、Steam、Air |
≤550 |
| NKJ61Y-64l |
9.6 |
7.0 |
7.O |
| NKJ61Y-1OOI |
15.O |
11.O |
11.O |
NKJ61H真空截止閥主要零件材料 Material for Main Parts
零件名稱
Part name |
閥體、閥蓋 Body Bonnet |
閥桿
Valve Stem |
閥瓣 Disc |
密封面
Sealing face |
閥桿螺母
Yokenut |
填料
Packing |
緊固件
Fasteher |
| NKJ61H-C型 |
25或WCB |
鉻不銹鋼
Crstain
mless
teel |
鉻不銹鋼
Crstain
mless
steel |
H：合金鋼
H：alloy steel |
鋁青銅
AI
bronze |
膨脹復合石墨
Expanding
compound
graphlte |
優(yōu)質碳鋼
High-grade
carbon
steel |
| NKJ61Y-l型 |
鉻鉬鋼
Cr.Mo steel |
20CrlM01vA 或38CrMoAlA |
12CrlMo 1VA |
Y：硬質合金
Y:oarbide alloy |
鉻鉬鋼
Cr.Mo steel |
NKJ61H真空截止閥主要尺寸及重量 Main dimensions and weight
公稱通徑
DN/mm
Nominal
diameter |
公稱壓力
PN/MPa
Nominal
pressure |
主要外形尺寸和連接尺寸/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 | | 
