
A41H弹簧蒸汽安全阀
安全阀是一种由进口静压开启的自动泄压防护装置,它是压力容器最为重要的安全附件之一,它的功能是:当容器内压力超过某一定值时,依靠介质自身的压力自动开启阀门,迅速排出一定数量的介质。当容器内的压力降到允许值时,阀又自动关闭,使容器内压力始终低于允许压力的上限,自动防止因超压而可能出现的事故,所以安全阀又被称为压力容器的最终保护装置。
安全阀常见故障及原因
【安全阀漏气】(1)阀芯与阀座接触面不严密;(2)阀芯与阀座接触面有脏物;(3)阀杆偏斜。
【安全阀到规定压力时不开启】(1)阀芯与阀座粘住,可做手动排气试验排除;(2)弹簧式安全阀的弹簧调整压力过大,应重新调整;(3)杠杆式安全阀的重锤向后移动,应将重锤移到原来定压的位置上,用限动螺丝紧固。
【安全阀不规定压力时开启】(1)弹簧式安全阀的弹簧调整压力不够、弹簧失效或弹力不足,应重调或重换安全阀;(2)杠杆式安全阀重锤向前移动,应将重锤移到原来定压的位置上,用限动螺丝紧固
A41H弹簧蒸汽安全阀
A41H弹簧蒸汽安全阀适用于工作温度≤300℃的石油气、空气、水等介质的设备或管路上。A41Y-P/R型适用于工作温度≤200℃有腐蚀性介质的设备或管路上,作为超压保护装置。连接法兰标准按JB/T……94/系列
弹簧蒸汽安全阀主要零部件材料
NO
|
零件名称
|
A41H-C/KA41Y-C材料
|
A41Y-P/KA41Y-P材料
|
A41Y-R/KA41Y-R材料
|
1
|
阀体
|
WCB
|
ZG1Cr18Ni9Ti
|
ZG1Cr18Ni12Mo2Ti
|
2
|
阀座
|
ZG2Cr13/1Cr18Ni9Ti
|
ZG1Cr18Ni9Ti
|
ZG1Cr18Ni12Mo2Ti
|
3
|
调节圈
|
ZG2Cr13/1Cr18Ni9Ti
|
ZG1Cr18Ni9Ti
|
ZG1Cr18Ni12Mo2Ti
|
4
|
阀瓣
|
2Cr13/1Cr18Ni9Ti
|
1Cr18Ni9Ti
|
1Cr18Ni12Mo2Ti
|
5
|
导向套
|
ZG2Cr13/1Cr18Ni9Ti
|
ZG1Cr18Ni9Ti
|
ZG1Cr18Ni12Mo2Ti
|
6
|
阀盖
|
ZG230-450
|
ZG230-450
|
ZG230-450
|
7
|
弹簧
|
50CrVA
|
50CrVA包覆氟塑料
|
50CrVA包覆氟塑料
|
8
|
阀杆
|
2Cr13
|
2Cr13
|
1Cr18Ni12Mo2Ti
|
9
|
调整螺杆
|
45
|
2Cr13
|
2Cr13
|
10
|
保护罩
|
ZG200-400
|
ZG200-400
|
ZG200-400
|
|
密封面材料
|
堆焊D507
|
堆焊Co基硬质合金
|
弹簧蒸汽安全阀外形尺寸和连接尺寸

型号
|
公称通径
|
do
|
D
|
K
|
g
|
g1
|
b
|
f
|
f1
|
Z-?d
|
DN''
|
D1
|
K1
|
g2
|
g''
|
b1
|
f''
|
f1''
|
Z1-?d1
|
L
|
L1
|
≈H
|
A41H-16C
A41Y-16P
A41Y-16R
KA41Y-16C
KA41Y-16P
|
20
|
15
|
105
|
75
|
|
55
|
16
|
2
|
|
4-14
|
20
|
105
|
75
|
55
|
|
16
|
2
|
|
4-14
|
100
|
85
|
276
|
25
|
20
|
115
|
85
|
|
65
|
16
|
2
|
|
4-14
|
25
|
115
|
85
|
65
|
|
16
|
2
|
|
4-14
|
100
|
85
|
276
|
32
|
25
|
140
|
100
|
|
78
|
18
|
2
|
|
4-18
|
32
|
140
|
100
|
78
|
|
18
|
2
|
|
4-18
|
115
|
100
|
285
|
40
|
32
|
150
|
110
|
|
85
|
18
|
3
|
|
4-18
|
40
|
150
|
110
|
85
|
|
18
|
3
|
|
4-18
|
120
|
110
|
292
|
50
|
40
|
165
|
125
|
|
100
|
20
|
3
|
|
4-18
|
50
|
165
|
125
|
100
|
|
20
|
3
|
|
4-18
|
135
|
120
|
370
|
65
|
50
|
185
|
145
|
|
120
|
20
|
3
|
|
4-18
|
65
|
185
|
145
|
120
|
|
20
|
3
|
|
4-18
|
140
|
130
|
375
|
80
|
65
|
200
|
160
|
|
135
|
20
|
3
|
|
8-18
|
80
|
200
|
160
|
135
|
|
20
|
3
|
|
8-18
|
160
|
135
|
373
|
100
|
80
|
220
|
180
|
|
155
|
22
|
3
|
|
8-18
|
100
|
220
|
180
|
155
|
|
22
|
3
|
|
8-18
|
170
|
160
|
513
|
125
|
100
|
250
|
210
|
|
185
|
22
|
3
|
|
8-18
|
125
|
250
|
210
|
185
|
|
22
|
3
|
|
8-18
|
190
|
190
|
560
|
150
|
125
|
285
|
240
|
|
210
|
24
|
3
|
|
8-23
|
150
|
285
|
240
|
210
|
|
24
|
3
|
|
8-23
|
205
|
195
|
570
|
200
|
150
|
340
|
295
|
|
265
|
26
|
3
|
|
12-23
|
200
|
340
|
295
|
265
|
|
26
|
3
|
|
12-23
|
240
|
230
|
717
|
250
|
200
|
405
|
355
|
|
320
|
30
|
3
|
|
12-26
|
250
|
405
|
355
|
320
|
|
30
|
3
|
|
12-26
|
350
|
320
|
940
|
300
|
250
|
460
|
410
|
|
375
|
30
|
4
|
|
12-26
|
300
|
460
|
410
|
375
|
|
30
|
4
|
|
12-26
|
350
|
320
|
980
|
A41H-25
A41Y-25P
A41Y-25R
KA41Y-25
KA41Y-25P
|
20
|
15
|
105
|
75
|
|
55
|
16
|
2
|
|
4-14
|
20
|
105
|
75
|
55
|
|
16
|
2
|
|
4-14
|
100
|
85
|
276
|
25
|
20
|
115
|
85
|
|
65
|
16
|
2
|
|
4-14
|
25
|
115
|
85
|
65
|
|
16
|
2
|
|
4-14
|
100
|
85
|
276
|
32
|
25
|
140
|
100
|
|
78
|
18
|
2
|
|
4-18
|
32
|
140
|
100
|
78
|
|
18
|
2
|
|
4-18
|
115
|
100
|
285
|
40
|
32
|
150
|
110
|
|
85
|
18
|
3
|
|
4-18
|
40
|
150
|
110
|
85
|
|
18
|
3
|
|
4-18
|
120
|
110
|
292
|
50
|
40
|
165
|
125
|
|
100
|
20
|
3
|
|
4-18
|
50
|
165
|
125
|
100
|
|
20
|
3
|
|
4-18
|
135
|
120
|
370
|
65
|
50
|
185
|
145
|
|
120
|
22
|
3
|
|
8-18
|
65
|
185
|
145
|
120
|
|
20
|
3
|
|
4-18
|
140
|
130
|
375
|
80
|
65
|
200
|
160
|
|
135
|
24
|
3
|
|
8-18
|
80
|
200
|
160
|
135
|
|
20
|
3
|
|
8-18
|
160
|
135
|
373
|
100
|
80
|
230
|
190
|
|
160
|
24
|
3
|
|
8-23
|
100
|
220
|
180
|
155
|
|
20
|
3
|
|
8-18
|
170
|
160
|
513
|
125
|
100
|
270
|
220
|
|
188
|
28
|
3
|
|
8-26
|
125
|
250
|
210
|
185
|
|
22
|
3
|
|
8-18
|
190
|
190
|
560
|
150
|
125
|
300
|
250
|
|
218
|
30
|
3
|
|
8-26
|
150
|
285
|
240
|
210
|
|
24
|
3
|
|
8-23
|
205
|
195
|
570
|
200
|
150
|
360
|
310
|
|
278
|
34
|
3
|
|
12-26
|
200
|
340
|
295
|
265
|
|
26
|
3
|
|
12-23
|
240
|
230
|
717
|
250
|
200
|
425
|
370
|
|
332
|
36
|
3
|
|
12-30
|
250
|
405
|
355
|
320
|
|
30
|
3
|
|
12-26
|
350
|
320
|
940
|
300
|
250
|
485
|
430
|
|
390
|
40
|
4
|
|
16-30
|
300
|
460
|
410
|
375
|
|
30
|
4
|
|
12-26
|
350
|
320
|
980
|
A41H-40
A41Y-40P
A41Y-40R
KA41Y-40
KA41Y-40P
|
20
|
15
|
105
|
75
|
51
|
55
|
16
|
2
|
4
|
4-14
|
20
|
105
|
75
|
55
|
|
16
|
2
|
|
4-14
|
100
|
85
|
276
|
25
|
20
|
115
|
85
|
58
|
65
|
16
|
2
|
4
|
4-14
|
25
|
115
|
85
|
65
|
|
16
|
2
|
|
4-14
|
100
|
85
|
276
|
32
|
25
|
140
|
100
|
66
|
78
|
18
|
2
|
4
|
4-18
|
32
|
140
|
100
|
78
|
|
18
|
2
|
|
4-18
|
115
|
100
|
285
|
40
|
32
|
150
|
110
|
76
|
85
|
18
|
3
|
4
|
4-18
|
40
|
150
|
110
|
85
|
|
18
|
3
|
|
4-18
|
120
|
110
|
292
|
50
|
40
|
165
|
125
|
88
|
100
|
20
|
3
|
4
|
4-18
|
50
|
165
|
125
|
100
|
|
20
|
3
|
|
4-18
|
135
|
120
|
370
|
65
|
50
|
185
|
145
|
110
|
120
|
22
|
3
|
4
|
8-18
|
65
|
185
|
145
|
120
|
|
20
|
3
|
|
4-18
|
140
|
130
|
375
|
80
|
65
|
200
|
160
|
121
|
135
|
22
|
3
|
4
|
8-18
|
80
|
200
|
160
|
135
|
|
20
|
3
|
|
8-18
|
160
|
135
|
373
|
100
|
80
|
235
|
190
|
150
|
160
|
24
|
3
|
4.5
|
8-23
|
100
|
220
|
180
|
155
|
|
22
|
3
|
|
8-18
|
170
|
160
|
513
|
125
|
100
|
270
|
220
|
176
|
188
|
28
|
3
|
4.5
|
8-26
|
125
|
250
|
210
|
185
|
|
22
|
3
|
|
8-18
|
190
|
190
|
560
|
150
|
125
|
300
|
250
|
204
|
218
|
30
|
3
|
4.5
|
8-26
|
150
|
285
|
240
|
210
|
|
24
|
3
|
|
8-23
|
205
|
195
|
570
|
200
|
150
|
375
|
320
|
260
|
282
|
38
|
3
|
4.5
|
12-30
|
200
|
340
|
295
|
265
|
|
26
|
3
|
|
12-23
|
240
|
230
|
717
|
250
|
200
|
450
|
385
|
313
|
345
|
42
|
3
|
4.5
|
12-34
|
250
|
405
|
355
|
320
|
|
30
|
3
|
|
12-26
|
350
|
320
|
940
|
300
|
250
|
515
|
450
|
364
|
408
|
46
|
4
|
4.5
|
16-34
|
300
|
460
|
410
|
375
|
|
30
|
4
|
|
12-26
|
350
|
320
|
980
|
A41H-64
A41Y-64
A41Y-64P
A41Y-64R
|
20
|
15
|
130
|
90
|
51
|
68
|
20
|
2
|
4
|
4-18
|
20
|
105
|
75
|
55
|
51
|
16
|
2
|
4
|
4-14
|
100
|
95
|
268
|
25
|
20
|
140
|
100
|
58
|
78
|
22
|
2
|
4
|
4-18
|
25
|
115
|
85
|
65
|
58
|
16
|
2
|
4
|
4-14
|
100
|
95
|
268
|
32
|
25
|
155
|
110
|
66
|
82
|
24
|
2
|
4
|
4-23
|
32
|
140
|
100
|
78
|
66
|
18
|
2
|
4
|
4-18
|
115
|
105
|
279
|
40
|
32
|
170
|
125
|
76
|
95
|
24
|
3
|
4
|
4-23
|
40
|
150
|
110
|
85
|
76
|
18
|
3
|
4
|
4-18
|
135
|
115
|
330
|
50
|
40
|
180
|
135
|
88
|
105
|
26
|
3
|
4
|
4-23
|
50
|
165
|
125
|
100
|
88
|
20
|
3
|
4
|
4-18
|
160
|
125
|
360
|
65
|
50
|
205
|
160
|
110
|
130
|
28
|
3
|
4
|
8-23
|
65
|
185
|
145
|
120
|
110
|
22
|
3
|
4
|
8-18
|
175
|
160
|
503
|
80
|
65
|
215
|
170
|
121
|
140
|
30
|
3
|
4
|
8-23
|
80
|
200
|
160
|
135
|
121
|
22
|
3
|
4
|
8-18
|
175
|
160
|
498
|
100
|
80
|
250
|
200
|
150
|
168
|
32
|
3
|
4.5
|
8-26
|
100
|
235
|
190
|
160
|
150
|
24
|
3
|
4.5
|
8-23
|
190
|
180
|
530
|
150
|
100
|
345
|
280
|
204
|
240
|
38
|
3
|
4.5
|
8-34
|
150
|
300
|
250
|
218
|
204
|
30
|
3
|
4.5
|
8-26
|
280
|
260
|
657
|
A41H-100
A41Y-100
A41Y-100P
A41Y-100R
|
20
|
15
|
130
|
90
|
51
|
68
|
22
|
2
|
4
|
4-18
|
20
|
105
|
75
|
55
|
51
|
16
|
2
|
4
|
4-14
|
100
|
95
|
268
|
25
|
20
|
140
|
100
|
58
|
78
|
24
|
2
|
4
|
4-18
|
25
|
115
|
85
|
65
|
58
|
16
|
2
|
4
|
4-14
|
100
|
95
|
268
|
32
|
25
|
155
|
110
|
66
|
82
|
24
|
2
|
4
|
4-23
|
32
|
140
|
100
|
78
|
66
|
18
|
2
|
4
|
4-18
|
115
|
105
|
279
|
40
|
32
|
170
|
125
|
76
|
95
|
26
|
3
|
4
|
4-23
|
40
|
150
|
110
|
85
|
76
|
18
|
3
|
4
|
4-18
|
135
|
115
|
330
|
50
|
40
|
195
|
145
|
88
|
112
|
28
|
3
|
4
|
4-26
|
50
|
165
|
125
|
100
|
88
|
20
|
3
|
4
|
4-18
|
160
|
125
|
360
|
65
|
50
|
220
|
170
|
110
|
138
|
32
|
3
|
4
|
8-26
|
65
|
185
|
145
|
120
|
110
|
22
|
3
|
4
|
8-18
|
175
|
160
|
503
|
80
|
65
|
230
|
180
|
121
|
148
|
34
|
3
|
4
|
8-26
|
80
|
200
|
160
|
135
|
121
|
22
|
3
|
4
|
8-18
|
175
|
160
|
498
|
100
|
80
|
265
|
210
|
150
|
172
|
38
|
3
|
4.5
|
8-30
|
100
|
235
|
190
|
160
|
150
|
24
|
3
|
4.5
|
8-23
|
190
|
180
|
530
|
150
|
100
|
355
|
290
|
204
|
250
|
46
|
3
|
4.5
|
12-34
|
150
|
300
|
250
|
218
|
204
|
30
|
3
|
4.5
|
8-26
|
280
|
260
|
657
|
|