| 详细介绍： 一、A47H型带扳手弹簧微启式安全阀产品概述
A47HW带扳手弹簧微启式安全阀适用于工作温度≤350℃的蒸汽、空气等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的系列
1、弹簧微启式安全阀具有结构简单、密封性能好、开启压力准确、排放能力大、回座压差小、调整方便等特点。
2、喷嘴型阀座：阀座为位伐尔喷嘴型阀座，蒸汽流经阀座出口处时达到音速，排放系数大，阀座密封面堆焊钴铬钨硬质合金，耐磨抗冲蚀，寿命长。
3、热弹性阀瓣：阀瓣设计为热弹性结构，利用其在介质压力下微小的变形，提高密封能力，克服安全阀在介质压力下临近整定压力时的前泄现象。阀瓣密封面采用先进的激光淬火技术，提高了硬度、耐磨性、抗冲抗性。
4、调节螺母：通过调整调节螺母，调整弹簧压缩量，使阀门能够很方便、很迅速地获得准确的整定压力。
5、背压调整套：调整阀瓣背压的辅助机构，通过背压调整套调整，可获得合适的回座压差。上调时，使阀门背压降低。下调时，使阀门背压提高。
二、A47H型带扳手弹簧微启式安全阀安装说明
1、安全阀必须垂直安装，并最好直接安装在容器或管道的接头上。接头内径应不小于安全阀的进口通径。
2、安全阀的出口必须装设适当的膨胀节，以防止排放管的热膨胀给安全阀带来不应有的热应力。排放管内径应比阀门出口直径大，长度尽可能短，避免拐弯。排放管及膨胀节重量不应作用在安全阀上，应固定在建筑上。排放管的中心线与阀体的中心线间距离尽可能的短。对每台安全阀都应单独装设排放管。
3、消声器的出口处要有足够的面积，防止产生背压影响阀门的排放能力。
三、A47H型带扳手弹簧微启式安全阀主要零件材料
NO
|
零件名称
|
材料
|
1
|
阀体
|
WCB
|
2
|
阀座
|
ZG2Cr13
|
3
|
调节圈
|
ZG2Cr13
|
4
|
阀瓣
|
2Cr13
|
5
|
导向套
|
2Cr13
|
6
|
阀盖
|
ZG230-450
|
7
|
弹簧
|
50CrVA
|
8
|
阀杆
|
2Cr13
|
9
|
扳手
|
ZG200-400
|
10
|
调整螺杆
|
45
|
11
|
保护罩
|
ZG200-400
|
|
密封面材料
|
"H"堆焊D507,"Y"堆焊Co基硬质合金
|
四、A47H型带扳手弹簧微启式安全阀主要外形尺寸
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
|
A47H-16C
|
20
|
15
|
105
|
75
|
/
|
55
|
16
|
2
|
/
|
4-14
|
20
|
105
|
75
|
55
|
/
|
16
|
2
|
/
|
4-14
|
100
|
85
|
270
|
25
|
20
|
115
|
85
|
/
|
65
|
16
|
2
|
/
|
4-14
|
25
|
115
|
85
|
65
|
/
|
16
|
2
|
/
|
4-14
|
100
|
85
|
270
|
32
|
25
|
140
|
100
|
/
|
78
|
18
|
2
|
/
|
4-18
|
32
|
140
|
100
|
78
|
/
|
18
|
2
|
/
|
4-18
|
115
|
100
|
312
|
40
|
32
|
150
|
110
|
/
|
85
|
18
|
3
|
/
|
4-18
|
40
|
150
|
110
|
85
|
/
|
18
|
3
|
/
|
4-18
|
120
|
110
|
320
|
50
|
40
|
165
|
125
|
/
|
100
|
20
|
3
|
/
|
4-18
|
50
|
165
|
125
|
100
|
/
|
20
|
3
|
/
|
4-18
|
135
|
120
|
390
|
65
|
50
|
185
|
145
|
/
|
120
|
20
|
3
|
/
|
4-18
|
65
|
185
|
145
|
120
|
/
|
20
|
3
|
/
|
4-18
|
140
|
130
|
395
|
80
|
65
|
200
|
160
|
/
|
135
|
20
|
3
|
/
|
8-18
|
80
|
200
|
160
|
135
|
/
|
20
|
3
|
/
|
8-18
|
160
|
135
|
400
|
100
|
80
|
220
|
180
|
/
|
155
|
22
|
3
|
/
|
8-18
|
100
|
220
|
180
|
155
|
/
|
22
|
3
|
/
|
8-18
|
170
|
160
|
600
|
125
|
100
|
250
|
210
|
/
|
185
|
22
|
3
|
/
|
8-18
|
125
|
250
|
210
|
185
|
/
|
22
|
3
|
/
|
8-18
|
190
|
190
|
620
|
150
|
125
|
285
|
240
|
/
|
210
|
24
|
3
|
/
|
8-23
|
150
|
285
|
240
|
210
|
/
|
24
|
3
|
/
|
8-23
|
205
|
195
|
625
|
200
|
150
|
340
|
295
|
/
|
265
|
26
|
3
|
/
|
12-23
|
200
|
340
|
295
|
265
|
/
|
26
|
3
|
/
|
12-23
|
240
|
230
|
798
|
250
|
200
|
405
|
355
|
/
|
320
|
30
|
3
|
/
|
12-26
|
250
|
405
|
355
|
320
|
/
|
30
|
3
|
/
|
12-26
|
350
|
320
|
981
|
300
|
250
|
460
|
410
|
/
|
375
|
30
|
4
|
/
|
12-26
|
300
|
460
|
410
|
375
|
/
|
30
|
4
|
/
|
12-26
|
350
|
320
|
1005
|
A47H-25
|
20
|
15
|
105
|
75
|
/
|
55
|
16
|
2
|
/
|
4-14
|
20
|
105
|
75
|
55
|
/
|
16
|
2
|
/
|
4-14
|
100
|
85
|
270
|
25
|
20
|
115
|
85
|
/
|
65
|
16
|
2
|
/
|
4-14
|
25
|
115
|
85
|
65
|
/
|
16
|
2
|
/
|
4-14
|
100
|
85
|
270
|
32
|
25
|
140
|
100
|
/
|
78
|
18
|
2
|
/
|
4-18
|
32
|
140
|
100
|
78
|
/
|
18
|
2
|
/
|
4-18
|
115
|
100
|
312
|
40
|
32
|
150
|
110
|
/
|
85
|
18
|
3
|
/
|
4-18
|
40
|
150
|
110
|
85
|
/
|
18
|
3
|
/
|
4-18
|
120
|
110
|
320
|
50
|
40
|
165
|
125
|
/
|
100
|
20
|
3
|
/
|
4-18
|
50
|
165
|
125
|
100
|
/
|
20
|
3
|
/
|
4-18
|
135
|
120
|
390
|
65
|
50
|
185
|
145
|
/
|
120
|
22
|
3
|
/
|
8-18
|
65
|
185
|
145
|
120
|
/
|
20
|
3
|
/
|
4-18
|
140
|
130
|
395
|
80
|
65
|
200
|
160
|
/
|
135
|
24
|
3
|
/
|
8-18
|
80
|
200
|
160
|
135
|
/
|
20
|
3
|
/
|
8-18
|
160
|
135
|
400
|
100
|
80
|
230
|
190
|
/
|
160
|
24
|
3
|
/
|
8-23
|
100
|
220
|
180
|
155
|
/
|
20
|
3
|
/
|
8-18
|
170
|
160
|
600
|
125
|
100
|
270
|
220
|
/
|
188
|
28
|
3
|
/
|
8-26
|
125
|
250
|
210
|
185
|
/
|
22
|
3
|
/
|
8-18
|
190
|
190
|
620
|
150
|
125
|
300
|
250
|
/
|
218
|
30
|
3
|
/
|
8-26
|
150
|
285
|
240
|
210
|
/
|
24
|
3
|
/
|
8-23
|
205
|
195
|
625
|
200
|
150
|
360
|
310
|
/
|
278
|
34
|
3
|
/
|
12-26
|
200
|
340
|
295
|
265
|
/
|
26
|
3
|
/
|
12-23
|
240
|
230
|
798
|
250
|
200
|
425
|
370
|
/
|
332
|
36
|
3
|
/
|
12-30
|
250
|
405
|
355
|
320
|
/
|
30
|
3
|
/
|
12-26
|
350
|
320
|
981
|
300
|
250
|
485
|
430
|
/
|
390
|
40
|
4
|
/
|
16-30
|
300
|
460
|
410
|
375
|
/
|
30
|
4
|
/
|
12-26
|
350
|
320
|
1005
|
A47H-40
|
20
|
15
|
105
|
75
|
51
|
55
|
16
|
2
|
4
|
4-14
|
20
|
105
|
75
|
55
|
/
|
16
|
2
|
/
|
4-14
|
100
|
85
|
270
|
25
|
20
|
115
|
85
|
58
|
65
|
16
|
2
|
4
|
4-14
|
25
|
115
|
85
|
65
|
/
|
16
|
2
|
/
|
4-14
|
100
|
85
|
270
|
32
|
25
|
140
|
100
|
66
|
78
|
18
|
2
|
4
|
4-18
|
32
|
140
|
100
|
78
|
/
|
18
|
2
|
/
|
4-18
|
115
|
100
|
312
|
40
|
32
|
150
|
110
|
76
|
85
|
18
|
3
|
4
|
4-18
|
40
|
150
|
110
|
85
|
/
|
18
|
3
|
/
|
4-18
|
120
|
110
|
320
|
50
|
40
|
165
|
125
|
88
|
100
|
20
|
3
|
4
|
4-18
|
50
|
165
|
125
|
100
|
/
|
20
|
3
|
/
|
4-18
|
135
|
120
|
390
|
65
|
50
|
185
|
145
|
110
|
120
|
22
|
3
|
4
|
8-18
|
65
|
185
|
145
|
120
|
/
|
20
|
3
|
/
|
4-18
|
140
|
130
|
395
|
80
|
65
|
200
|
160
|
121
|
135
|
22
|
3
|
4
|
8-18
|
80
|
200
|
160
|
135
|
/
|
20
|
3
|
/
|
8-18
|
160
|
135
|
400
|
100
|
80
|
235
|
190
|
150
|
160
|
24
|
3
|
4.5
|
8-23
|
100
|
220
|
180
|
155
|
/
|
22
|
3
|
/
|
8-18
|
170
|
160
|
600
|
125
|
100
|
270
|
220
|
176
|
188
|
28
|
3
|
4.5
|
8-26
|
125
|
250
|
210
|
185
|
/
|
22
|
3
|
/
|
8-18
|
190
|
190
|
620
|
150
|
125
|
300
|
250
|
204
|
218
|
30
|
3
|
4.5
|
8-26
|
150
|
285
|
240
|
210
|
/
|
24
|
3
|
/
|
8-23
|
205
|
195
|
625
|
200
|
150
|
375
|
320
|
260
|
282
|
38
|
3
|
4.5
|
12-30
|
200
|
340
|
295
|
265
|
/
|
26
|
3
|
/
|
12-23
|
240
|
230
|
798
|
250
|
200
|
450
|
385
|
313
|
345
|
42
|
3
|
4.5
|
12-34
|
250
|
405
|
355
|
320
|
/
|
30
|
3
|
/
|
12-26
|
350
|
320
|
981
|
300
|
250
|
515
|
450
|
364
|
408
|
46
|
4
|
4.5
|
16-34
|
300
|
460
|
410
|
375
|
/
|
30
|
4
|
/
|
12-26
|
350
|
320
|
1005
|
A47H-64 A47Y-64
|
20
|
15
|
130
|
90
|
51
|
68
|
20
|
2
|
4
|
4-18
|
20
|
105
|
75
|
55
|
51
|
16
|
2
|
4
|
4-14
|
100
|
95
|
301
|
25
|
20
|
140
|
100
|
58
|
78
|
22
|
2
|
4
|
4-18
|
25
|
115
|
85
|
65
|
58
|
16
|
2
|
4
|
4-14
|
100
|
95
|
301
|
32
|
25
|
155
|
110
|
66
|
82
|
24
|
2
|
4
|
4-23
|
32
|
140
|
100
|
78
|
66
|
18
|
2
|
4
|
4-18
|
115
|
105
|
312
|
40
|
32
|
170
|
125
|
76
|
95
|
24
|
3
|
4
|
4-23
|
40
|
150
|
110
|
85
|
76
|
18
|
3
|
4
|
4-18
|
135
|
115
|
366
|
50
|
40
|
180
|
135
|
88
|
105
|
26
|
3
|
4
|
4-23
|
50
|
165
|
125
|
100
|
88
|
20
|
3
|
4
|
4-18
|
160
|
125
|
396
|
65
|
50
|
205
|
160
|
110
|
130
|
28
|
3
|
4
|
8-23
|
65
|
185
|
145
|
120
|
110
|
22
|
3
|
4
|
8-18
|
175
|
160
|
570
|
80
|
65
|
215
|
170
|
121
|
140
|
30
|
3
|
4
|
8-23
|
80
|
200
|
160
|
135
|
121
|
22
|
3
|
4
|
8-18
|
175
|
160
|
565
|
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
|
597
|
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
|
738
|
A47H-100 A47Y-100
|
20
|
15
|
130
|
90
|
51
|
68
|
22
|
2
|
4
|
4-18
|
20
|
105
|
75
|
55
|
51
|
16
|
2
|
4
|
4-14
|
100
|
95
|
301
|
25
|
20
|
140
|
100
|
58
|
78
|
24
|
2
|
4
|
4-18
|
25
|
115
|
85
|
65
|
58
|
16
|
2
|
4
|
4-14
|
100
|
95
|
301
|
32
|
25
|
155
|
110
|
66
|
82
|
24
|
2
|
4
|
4-23
|
32
|
140
|
100
|
78
|
66
|
18
|
2
|
4
|
4-18
|
115
|
105
|
312
|
40
|
32
|
170
|
125
|
76
|
95
|
26
|
3
|
4
|
4-23
|
40
|
150
|
110
|
85
|
76
|
18
|
3
|
4
|
4-18
|
135
|
115
|
366
|
50
|
40
|
195
|
145
|
88
|
112
|
28
|
3
|
4
|
4-26
|
50
|
165
|
125
|
100
|
88
|
20
|
3
|
4
|
4-18
|
160
|
125
|
396
|
65
|
50
|
220
|
170
|
110
|
138
|
32
|
3
|
4
|
8-26
|
65
|
185
|
145
|
120
|
110
|
22
|
3
|
4
|
8-18
|
175
|
160
|
570
|
80
|
65
|
230
|
180
|
121
|
148
|
34
|
3
|
4
|
8-26
|
80
|
200
|
160
|
135
|
121
|
22
|
3
|
4
|
8-18
|
175
|
160
|
565
|
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
|
597
|
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
|
738
|
| 
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