|
NKJ61H真空截止閥主要結(jié)構(gòu)特點及用途
NKJ61H真空截止閥主體采用鑄鍛結(jié)構(gòu)，具有平行雙密封副半強(qiáng)制雙向密封，密封面到位運(yùn)動和楔形塊楔緊運(yùn)動分步作用實現(xiàn)零泄漏。
NKJ61H真空截止閥密封面運(yùn)動磨擦力小、啟閉輕便，而且密封面磨損有自動補(bǔ)償功能。
NKJ61H真空截止閥 結(jié)構(gòu)簡單、緊湊、檢修方便，使用壽命長。
NKJ61H真空截止閥閥蓋填料室設(shè)有真空密封結(jié)構(gòu)，具有自脹壓緊作用，并且密封采用高強(qiáng)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。
NKJ61H真空截止閥連接形式分法蘭、焊接兩種，驅(qū)動方式有手動、電動兩種。
NKJ61H真空截止閥適用于工作溫度≤425℃和≤550℃，工作介質(zhì)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(jī)冷凝和真空負(fù)壓系統(tǒng)，起真空隔離密封作用。
NKJ61H真空截止閥結(jié)構(gòu)型式Valve ctrucure type
|
產(chǎn)品類型
Product type
|
殼體強(qiáng)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(zhì)
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(fù)合石墨
Expanding
compound
graphlte
|
優(yōu)質(zhì)碳鋼
High-grade
carbon
steel
|
|
NKJ61Y-l型
|
鉻鉬鋼
Cr.Mo steel
|
20CrlM01vA 或38CrMoAlA
|
12CrlMo 1VA
|
Y：硬質(zhì)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
|
|
