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A44Y、A48Y鍋爐專項(xiàng)使用安全閥適用于工作溫度≤350℃的蒸汽、空氣等介質(zhì)的設(shè)備或管路上。作為超壓保護(hù)裝置。適用于工作溫度≤350℃的蒸汽、空氣等介質(zhì)的設(shè)備或管路上。作為超壓保護(hù)裝置。是一種由進(jìn)口靜壓開啟的自動(dòng)泄壓防護(hù)裝置,它是壓力容器較為重要的安全附件之一,它的功能是：當(dāng)容器內(nèi)壓力超過某一定值時(shí),依靠介質(zhì)自身的壓力自動(dòng)開啟閥門,迅速排出一定數(shù)量的介質(zhì)。當(dāng)容器內(nèi)的壓力降到允許值時(shí),閥又自動(dòng)關(guān)閉,使容器內(nèi)壓力始終低于允許壓力的上限,自動(dòng)防止因超壓而可能出現(xiàn)的事故,所以安全閥又被稱為壓力容器的較終保護(hù)裝置。
鍋爐安全閥主要零部件材料:
|
NO
|
零件名稱
|
材料
|
|
1
|
閥體
|
WCB
|
|
2
|
閥座
|
ZG2Cr13
|
|
3
|
調(diào)節(jié)圈
|
ZG2Cr13
|
|
4
|
閥瓣
|
2Cr13
|
|
5
|
導(dǎo)向套
|
2Cr13
|
|
6
|
閥蓋
|
ZG230-450
|
|
7
|
彈簧
|
50CrVA
|
|
8
|
閥桿
|
2Cr13
|
|
9
|
扳手
|
ZG200-400
|
|
10
|
調(diào)整螺桿
|
45
|
|
11
|
保護(hù)罩
|
ZG200-400
|
|
|
密封面材料
|
"H"堆焊D507,"Y"堆焊Co基硬質(zhì)合金
|
鍋爐安全閥主要連接尺寸
|
型號
|
公稱通徑
|
do
|
D
|
K
|
g
|
g1
|
b
|
f
|
f1
|
Z-?d
|
f
|
L
|
L1
|
H
|
|
A48Y-16C A44Y-16C A44Y-16P A44Y-16R
|
20
|
15
|
105
|
75
|
|
55
|
16
|
2
|
|
4-14
|
2
|
110
|
95
|
411
|
|
25
|
16
|
115
|
85
|
|
65
|
16
|
2
|
|
4-14
|
2
|
110
|
95
|
411
|
|
32
|
20
|
140
|
100
|
|
78
|
18
|
2
|
|
4-18
|
3
|
115
|
100
|
411
|
|
40
|
25
|
150
|
110
|
|
85
|
18
|
3
|
|
4-18
|
3
|
120
|
110
|
472
|
|
50
|
32
|
165
|
125
|
|
100
|
20
|
3
|
|
4-18
|
3
|
135
|
120
|
532
|
|
65
|
40
|
185
|
145
|
|
120
|
20
|
3
|
|
4-18
|
3
|
160
|
140
|
556
|
|
80
|
50
|
200
|
160
|
|
135
|
20
|
3
|
|
8-18
|
3
|
170
|
135
|
561
|
|
100
|
65
|
220
|
180
|
|
155
|
20
|
3
|
|
8-18
|
3
|
195
|
175
|
667
|
|
125
|
80
|
250
|
210
|
|
185
|
22
|
3
|
|
8-18
|
3
|
210
|
190
|
857
|
|
150
|
100
|
285
|
240
|
|
210
|
24
|
3
|
|
8-23
|
3
|
255
|
230
|
915
|
|
200
|
125
|
340
|
295
|
|
265
|
26
|
3
|
|
12-23
|
3
|
300
|
260
|
1073
|
|
250
|
150
|
405
|
355
|
|
320
|
30
|
3
|
|
12-26
|
4
|
350
|
320
|
1307
|
|
300
|
220
|
460
|
410
|
|
375
|
30
|
4
|
|
12-26
|
4
|
370
|
350
|
1233
|
|
350
|
250
|
520
|
470
|
|
435
|
34
|
4
|
|
16-26
|
4
|
500
|
450
|
1711
|
|
400
|
280
|
580
|
525
|
|
485
|
36
|
4
|
|
16-30
|
4
|
500
|
450
|
1780
|
|
A48Y-25
A44Y-25
A44Y-25P A44Y-25R
|
20
|
15
|
105
|
75
|
|
55
|
16
|
2
|
|
4-14
|
2
|
110
|
95
|
411
|
|
25
|
16
|
115
|
85
|
|
65
|
16
|
2
|
|
4-14
|
2
|
110
|
95
|
411
|
|
32
|
20
|
140
|
100
|
|
78
|
18
|
2
|
|
4-18
|
3
|
115
|
100
|
411
|
|
40
|
25
|
150
|
110
|
|
85
|
18
|
3
|
|
4-18
|
3
|
120
|
110
|
472
|
|
50
|
32
|
165
|
125
|
|
100
|
20
|
3
|
|
4-18
|
3
|
135
|
120
|
532
|
|
65
|
40
|
185
|
145
|
|
120
|
22
|
3
|
|
8-18
|
3
|
160
|
140
|
556
|
|
80
|
50
|
200
|
160
|
|
135
|
22
|
3
|
|
8-18
|
3
|
170
|
135
|
561
|
|
100
|
65
|
230
|
190
|
|
160
|
24
|
3
|
|
8-23
|
3
|
195
|
175
|
667
|
|
125
|
80
|
270
|
220
|
|
188
|
28
|
3
|
|
8-26
|
3
|
210
|
190
|
857
|
|
150
|
100
|
300
|
250
|
|
218
|
30
|
3
|
|
8-26
|
3
|
255
|
230
|
915
|
|
200
|
125
|
360
|
310
|
|
278
|
34
|
3
|
|
12-26
|
3
|
300
|
260
|
1073
|
|
250
|
150
|
425
|
370
|
|
332
|
36
|
3
|
|
12-30
|
4
|
350
|
320
|
1307
|
|
300
|
220
|
485
|
430
|
|
390
|
40
|
4
|
|
16-30
|
4
|
370
|
350
|
1233
|
|
350
|
250
|
555
|
490
|
|
448
|
44
|
4
|
|
16-34
|
4
|
500
|
450
|
1711
|
|
400
|
280
|
620
|
550
|
|
505
|
48
|
4
|
|
16-36
|
4
|
500
|
450
|
1780
|
|
