1、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(xiàn)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(jié)構(gòu)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(jié)構(gòu),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(qū)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(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(jié)構(gòu)型式 Valve ctrucure type
NKJ61真空截止閥主要性能規(guī)范
產(chǎn)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(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 | |