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- 產(chǎn)品名稱：真空截止閥
- 產(chǎn)品型號：NKJ41H-4.0-DN10,NKJ41H-4.0-DN15,
- 產(chǎn)品展商：其它品牌
- 產(chǎn)品文檔：無相關文檔
簡單介紹
NKJ41H-4.0-DN10,NKJ41H-4.0-DN15,NKJ41H-4.0-DN20,NKJ41H-4.0-DN25,真空截止閥NKJ41H-4.0-DN10,NKJ41H-4.0-DN15,NKJ41H-4.0-DN20,NKJ41H-4.0-DN25,真空截止閥
產(chǎn)品描述
NKJ41H-4.0-DN10,NKJ41H-4.0-DN15,NKJ41H-4.0-DN20,NKJ41H-4.0-DN25,真空截止閥
NKJ41H-4.0-DN32,NKJ41H-4.0-DN40,NKJ41H-4.0-DN50,NKJ41H-4.0-DN65,NKJ41H-4.0-DN80,NKJ41H-4.0-DN100,NKJ41H-4.0-DN125,NKJ41H-4.0-DN150,
NKJ41H-6.4-DN10,NKJ41H-6.4-DN15,NKJ41H-6.4-DN20,NKJ41H-6.4-DN25,NKJ41H-6.4-DN32,NKJ41H-6.4-DN40,NKJ41H-6.4-DN50,NKJ41H-6.4-DN65,NKJ41H-6.4-DN80,
NKJ41H-6.4-DN100,NKJ41H-6.4-DN125,NKJ41H-6.4-DN150,NKJ41H-10.0-DN10,NKJ41H-10.0-DN15,NKJ41H-10.0-DN20,NKJ41H-10.0-DN25,NKJ41H-10.0-DN32,
NKJ41H-10.0-DN40,NKJ41H-10.0-DN50,NKJ41H-10.0-DN65,NKJ41H-10.0-DN80,NKJ41H-10.0-DN100,NKJ41H-10.0-DN125,NKJ41H-10.0-DN150,
一、NKJ41H真空截止閥概述：
法蘭真空隔離截止閥適用于公稱壓力PN4.0～10.0Mpa，工作溫度≤200℃的火力電站回水冷凝系統(tǒng)管道上，切斷或接通中的介質。適用介質為：水、蒸汽等。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。結構簡單、緊湊、檢修方便，使用壽命長。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。本系列閥門連接形式分法蘭、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。
NKJ41H真空截止閥產(chǎn)品結構特點：
1.產(chǎn)品按JB/T3595標準設計制造，滿足電站設備配套使用要求。
2.設計了真空密封結構填料室，隔離真空可靠。
3.閥桿經(jīng)調質及表面氮化處理，有良好的抗腐蝕性，抗擦傷和耐磨性。
4.法蘭墊片采用復合材料，膨脹系數(shù)大，氣密性能好，保證系統(tǒng)與大氣隔離可靠。
5.倒密封采用不銹鋼螺紋連接密封座或本體堆焊奧氏體不銹鋼而成，倒密封可靠。填料更換和維修可在不停機情況下進行，方便快捷不影響系統(tǒng)運行。
NKJ41H真空截止閥主要零件的材料說明：
|
閥體
|
25、WCB
|
Cr5Mo
|
|
閥蓋
|
25、WCB
|
Cr5Mo
|
|
支架
|
25、WCB
|
Cr5Mo
|
|
閥瓣
|
2Cr13、WCB
|
Cr5Mo
|
|
閥桿
|
2Cr13
|
38CrMoAL、25Cr2MoV
|
|
閥座
|
25、304
|
304
|
|
密封環(huán)
|
膨脹柔性石墨
|
|
填料
|
膨脹柔性石墨
|
|
閥桿螺母
|
ZCuA110Fe3
|
NKJ41H真空截止閥主要尺寸及重量：
|
公稱通徑
DN(mm)
|
公稱壓力PN(MPa)
|
主要外形及連接尺寸(mm)
|
|
L
|
H手
|
D
|
Do
|
D1
|
L1
|
α
|
W
|
|
10
|
4.0
|
130
|
245
|
36
|
11
|
18.4
|
10
|
|
120
|
|
15
|
130
|
245
|
36
|
16
|
22.5
|
10
|
|
120
|
|
20
|
150
|
265
|
44
|
21
|
28.5
|
11
|
|
160
|
|
25
|
160
|
270
|
48
|
26
|
34.5
|
12
|
|
200
|
|
32
|
180
|
285
|
48
|
34
|
|
|
37.5°
|
200
|
|
40
|
200
|
320
|
55
|
40
|
|
|
37.5°
|
240
|
|
50
|
230
|
365
|
64
|
48
|
|
|
37.5°
|
320
|
|
65
|
290
|
410
|
82
|
66
|
|
|
37.5°
|
300
|
|
80
|
310
|
430
|
95
|
78
|
|
|
37.5°
|
3000
|
|
100
|
35
|
470
|
117
|
100
|
|
|
37.5°
|
350
|
|
125
|
400
|
500
|
143
|
126
|
|
|
37.5°
|
350
|
|
150
|
480
|
533
|
167
|
150
|
|
|
37.5°
|
400
|
|
10
|
6.4
|
130
|
245
|
36
|
10
|
18.4
|
10
|
|
120
|
|
15
|
130
|
245
|
36
|
15
|
22.5
|
10
|
|
120
|
|
20
|
150
|
265
|
44
|
20
|
28.5
|
11
|
|
160
|
|
25
|
160
|
270
|
48
|
25
|
34.5
|
12
|
|
200
|
|
32
|
180
|
280
|
48
|
33
|
|
|
37.5°
|
200
|
|
40
|
200
|
320
|
55
|
39
|
|
|
37.5°
|
240
|
|
50
|
230
|
365
|
64
|
48
|
|
|
37.5°
|
320
|
|
65
|
290
|
410
|
82
|
65
|
|
|
37.5°
|
320
|
|
80
|
310
|
430
|
95
|
76
|
|
|
37.5°
|
360
|
|
100
|
350
|
470
|
117
|
98
|
|
|
37.5°
|
400
|
|
125
|
480
|
500
|
143
|
123
|
|
|
37.5°
|
400
|
|
150
|
480
|
533
|
167
|
148
|
|
|
37.5°
|
500
|
|
10
|
10.0
|
130
|
245
|
36
|
10
|
18.4
|
10
|
|
120
|
|
15
|
130
|
245
|
36
|
14
|
22.5
|
10
|
|
120
|
|
20
|
150
|
265
|
44
|
20
|
28.5
|
11
|
|
160
|
|
25
|
160
|
270
|
48
|
25
|
34.5
|
12
|
|
200
|
|
32
|
180
|
285
|
48
|
32
|
|
|
37.5°
|
200
|
|
40
|
200
|
320
|
55
|
38
|
|
|
37.5°
|
240
|
|
50
|
230
|
355
|
64
|
48
|
|
|
37.5°
|
320
|
|
65
|
290
|
410
|
82
|
63
|
|
|
37.5°
|
320
|
|
80
|
310
|
430
|
95
|
74
|
|
|
37.5°
|
360
|
|
100
|
350
|
470
|
117
|
97
|
|
|
37.5°
|
400
|
|
125
|
400
|
500
|
143
|
123
|
|
|
37.5°
|
400
|
|
150
|
480
|
533
|
167
|
148
|
|
|
37.5°
|
500
|