安全閥是依靠彈簧的力量將閥芯壓緊在閥座上,使安全閥處于關(guān)閉狀態(tài),閥芯的下面受蒸汽向上頂起的力。正常運行時,彈簧向下的壓緊力大于蒸汽向上的推力,閥門處于關(guān)閉狀態(tài)。當(dāng)蒸汽壓力達(dá)到安全閥起座壓力時,蒸汽對閥芯的作用力大于彈簧的作用力,使閥芯頂起,安全閥排汽。通過閥桿上部的調(diào)節(jié)螺絲改變彈簧的松緊程度,就可調(diào)整安全閥的起座壓力。這種安全閥具有調(diào)節(jié)方便、體積和重量都較小、排汽能力大等優(yōu)點,適用于不同參數(shù)和不同容量的鍋爐。
安全閥是鍋爐、壓力容器和其他受壓力設(shè)備上重要的安全附件。其動作可靠性和性能好壞直接關(guān)系到設(shè)備和人身的安全,并與節(jié)能和環(huán)境保護緊密相關(guān)。
全啟封閉式安全閥的作用:全啟封閉式安全閥適用于工作溫度≤300℃的空氣、石油氣等介質(zhì)的設(shè)備和管路上; A42Y-16P~40P型適用于工作溫度≤200℃有腐蝕性的氣體介質(zhì)的設(shè)備和管路上;作為超壓保妒裝置,當(dāng)設(shè)備和管路內(nèi)壓力超過允許值時,閥門自動開啟,繼而全量排放:當(dāng)壓力降低到規(guī)定值時,閥門自動關(guān)閉,保證設(shè)備和管路的安全運行。
A42Y-16C |
A42Y-16P |
A42Y-16R |
KA42Y-16 |
DA42Y-16C/P |
A42Y-25 |
A42Y-25P |
A42Y-25R |
KA42Y-25(P) |
DA42Y-25P |
A42Y-40 |
A42Y-40P |
A42Y-40R |
KA42Y-40 |
DA42Y-40P |
A42Y-64 |
A42Y-64P |
A42Y-64R |
KA42Y-64 |
DA42Y-64P |
A42Y-100 |
A42Y-100 |
PA42Y-100R |
KA42Y-100 |
DA42Y-100P |
|
|
主要零件材料
NO. |
零件名稱 |
A42Y-C/KA42Y-C材料 |
A42Y-P/KA42Y-P材料 |
A42Y-R材料 |
DA42Y-P材料 |
1 |
閥座 |
2Cr13/1Cr18Ni9Ti |
ZG1Cr18Ni9Ti |
ZG1Cr18Ni12Mo2Ti |
ZG1Cr18Ni9Ti |
2 |
閥體 |
WCB |
ZG1Cr18Ni9Ti |
ZG1Cr18Ni12Mo2Ti |
LCB/ZG1Cr18Ni9Ti |
3 |
調(diào)節(jié)圈 |
2Cr13/1Cr18Ni9Ti |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
1Cr18Ni9Ti |
4 |
反沖盤 |
2Cr13/1Cr18Ni9Ti |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
1Cr18Ni9Ti |
5 |
閥瓣 |
2Cr13/1Cr18Ni9Ti |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
1Cr18Ni9Ti |
6 |
導(dǎo)向套 |
2Cr13/1Cr18Ni9Ti |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
1Cr18Ni9Ti |
7 |
閥蓋 |
ZG230-450 |
ZG230-450 |
ZG230-450 |
ZG1Cr18Ni9Ti |
8 |
彈簧 |
50CrVA |
50CrVA包覆氟塑料 |
50CrVA包覆氟塑料 |
50CrVA |
9 |
閥桿 |
2Cr13 |
1Cr18Ni9Ti/1Cr18Ni12Mo2Ti |
1Cr18Ni9Ti/1Cr18Ni12Mo2Ti |
1Cr18Ni9Ti |
10 |
調(diào)整螺桿 |
45 |
2Cr13 |
2Cr13 |
2Cr13 |
11 |
閥帽 |
ZG200-400 |
ZG200-400 |
ZG200-400 |
ZG230-450 |
|
密封面材料 |
堆焊Co基硬質(zhì)合金 |
主要外形尺寸
型號 |
公稱通徑 |
do |
D |
K |
g |
g1 |
b |
f |
f1 |
Z-?d |
DN' |
D1 |
K1 |
g3 |
g2 |
b1 |
f' |
f1' |
Z1-?d1 |
L |
L1 |
≈H |
A42Y-16C |
20 |
15 |
105 |
75 |
|
55 |
16 |
2 |
|
4-14 |
25 |
115 |
85 |
|
65 |
16 |
2 |
|
4-14 |
110 |
95 |
378 |
25 |
16 |
115 |
85 |
|
65 |
16 |
2 |
|
4-14 |
32 |
140 |
100 |
|
78 |
18 |
2 |
|
4-18 |
110 |
95 |
378 |
|
32 |
20 |
140 |
100 |
|
78 |
18 |
2 |
|
4-18 |
40 |
150 |
110 |
|
85 |
18 |
3 |
|
4-18 |
115 |
100 |
378 |
|
40 |
25 |
150 |
110 |
|
85 |
18 |
3 |
|
4-18 |
50 |
165 |
125 |
|
100 |
20 |
3 |
|
4-18 |
120 |
110 |
406 |
|
50 |
32 |
165 |
125 |
|
100 |
20 |
3 |
|
4-18 |
65 |
185 |
145 |
|
120 |
20 |
3 |
|
4-18 |
135 |
120 |
450 |
|
65 |
40 |
185 |
145 |
|
120 |
20 |
3 |
|
4-18 |
80 |
200 |
160 |
|
135 |
20 |
3 |
|
8-18 |
160 |
140 |
520 |
|
80 |
50 |
200 |
160 |
|
135 |
20 |
3 |
|
8-18 |
100 |
220 |
180 |
|
155 |
22 |
3 |
|
8-18 |
170 |
135 |
525 |
|
100 |
65 |
220 |
180 |
|
155 |
22 |
3 |
|
8-18 |
125 |
250 |
210 |
|
185 |
22 |
3 |
|
8-18 |
195 |
175 |
690 |
|
125 |
80 |
250 |
210 |
|
185 |
22 |
3 |
|
8-18 |
150 |
285 |
240 |
|
210 |
24 |
3 |
|
8-23 |
210 |
190 |
780 |
|
150 |
100 |
285 |
240 |
|
210 |
24 |
3 |
|
8-23 |
175 |
310 |
270 |
|
240 |
26 |
3 |
|
8-23 |
255 |
230 |
838 |
|
200 |
125 |
340 |
295 |
|
265 |
26 |
3 |
|
12-23 |
250 |
405 |
355 |
|
320 |
30 |
3 |
|
12-26 |
300 |
260 |
992 |
|
250 |
150 |
405 |
355 |
|
320 |
30 |
3 |
|
12-26 |
300 |
460 |
410 |
|
375 |
30 |
4 |
|
12-26 |
350 |
320 |
1266 |
|
300 |
220 |
460 |
410 |
|
375 |
30 |
4 |
|
12-26 |
400 |
580 |
525 |
|
485 |
36 |
4 |
|
16-30 |
370 |
350 |
1283 |
|
350 |
250 |
520 |
470 |
|
435 |
34 |
4 |
|
16-26 |
500 |
715 |
650 |
|
608 |
44 |
4 |
|
20-34 |
500 |
450 |
1520 |
|
400 |
280 |
580 |
525 |
|
485 |
36 |
4 |
|
16-30 |
500 |
715 |
650 |
|
608 |
44 |
4 |
|
20-34 |
500 |
450 |
1530 |
|
A42Y-25C |
20 |
15 |
105 |
75 |
|
55 |
16 |
2 |
|
4-14 |
25 |
115 |
85 |
|
65 |
16 |
2 |
|
4-14 |
110 |
95 |
378 |
25 |
16 |
115 |
85 |
|
65 |
16 |
2 |
|
4-14 |
32 |
140 |
100 |
|
78 |
18 |
2 |
|
4-18 |
110 |
95 |
378 |
|
32 |
20 |
140 |
100 |
|
78 |
18 |
2 |
|
4-18 |
40 |
150 |
110 |
|
85 |
18 |
3 |
|
4-18 |
115 |
100 |
378 |
|
40 |
25 |
150 |
110 |
|
85 |
18 |
3 |
|
4-18 |
50 |
165 |
125 |
|
100 |
20 |
3 |
|
4-18 |
120 |
110 |
406 |
|
50 |
32 |
165 |
125 |
|
100 |
20 |
3 |
|
4-18 |
65 |
185 |
145 |
|
120 |
20 |
3 |
|
4-18 |
135 |
120 |
450 |
|
65 |
40 |
185 |
145 |
|
120 |
22 |
3 |
|
8-18 |
80 |
200 |
160 |
|
135 |
20 |
3 |
|
8-18 |
160 |
140 |
520 |
|
80 |
50 |
200 |
160 |
|
135 |
22 |
3 |
|
8-18 |
100 |
220 |
180 |
|
155 |
22 |
3 |
|
8-18 |
170 |
135 |
525 |
|
100 |
65 |
230 |
190 |
|
160 |
24 |
3 |
|
8-23 |
125 |
250 |
210 |
|
185 |
22 |
3 |
|
8-18 |
195 |
175 |
690 |
|
125 |
80 |
270 |
220 |
|
188 |
28 |
3 |
|
8-26 |
150 |
285 |
240 |
|
210 |
24 |
3 |
|
8-23 |
210 |
190 |
780 |
|
150 |
100 |
300 |
250 |
|
218 |
30 |
3 |
|
8-26 |
175 |
310 |
270 |
|
240 |
26 |
3 |
|
8-23 |
255 |
230 |
838 |
|
200 |
125 |
360 |
310 |
|
278 |
34 |
3 |
|
12-26 |
250 |
405 |
355 |
|
320 |
30 |
3 |
|
12-26 |
300 |
260 |
992 |
|
250 |
150 |
425 |
370 |
|
332 |
36 |
3 |
|
12-30 |
300 |
460 |
410 |
|
375 |
30 |
4 |
|
12-26 |
350 |
320 |
1266 |
|
300 |
220 |
485 |
430 |
|
390 |
40 |
4 |
|
16-30 |
400 |
580 |
525 |
|
485 |
36 |
4 |
|
16-30 |
370 |
350 |
1283 |
|
A42Y-40C |
20 |
15 |
105 |
75 |
51 |
55 |
16 |
2 |
4 |
4-14 |
25 |
115 |
85 |
|
65 |
16 |
2 |
|
4-14 |
110 |
95 |
378 |
25 |
16 |
115 |
85 |
58 |
65 |
16 |
2 |
4 |
4-14 |
32 |
140 |
100 |
|
78 |
18 |
2 |
|
4-18 |
110 |
95 |
378 |
|
32 |
20 |
140 |
100 |
66 |
78 |
18 |
2 |
4 |
4-18 |
40 |
150 |
110 |
|
85 |
18 |
3 |
|
4-18 |
115 |
100 |
378 |
|
40 |
25 |
150 |
110 |
76 |
85 |
18 |
3 |
4 |
4-18 |
50 |
165 |
125 |
|
100 |
20 |
3 |
|
4-18 |
120 |
110 |
406 |
|
50 |
32 |
165 |
125 |
88 |
100 |
20 |
3 |
4 |
4-18 |
65 |
185 |
145 |
|
120 |
20 |
3 |
|
4-18 |
135 |
120 |
450 |
|
65 |
40 |
185 |
145 |
110 |
120 |
22 |
3 |
4 |
8-18 |
80 |
200 |
160 |
|
135 |
20 |
3 |
|
8-18 |
160 |
140 |
520 |
|
80 |
50 |
200 |
160 |
121 |
135 |
22 |
3 |
4 |
8-18 |
100 |
220 |
180 |
|
155 |
22 |
3 |
|
8-18 |
170 |
135 |
525 |
|
100 |
65 |
235 |
190 |
150 |
160 |
24 |
3 |
4.5 |
8-23 |
125 |
250 |
210 |
|
185 |
22 |
3 |
|
8-18 |
195 |
175 |
690 |
|
125 |
80 |
270 |
220 |
176 |
188 |
28 |
3 |
4.5 |
8-26 |
150 |
285 |
240 |
|
210 |
24 |
3 |
|
8-23 |
210 |
190 |
780 |
|
150 |
100 |
300 |
250 |
204 |
218 |
30 |
3 |
4.5 |
8-26 |
175 |
310 |
270 |
|
240 |
26 |
3 |
|
8-23 |
255 |
230 |
838 |
|
200 |
125 |
375 |
320 |
260 |
282 |
38 |
3 |
4.5 |
12-30 |
250 |
405 |
355 |
|
320 |
30 |
3 |
|
12-26 |
300 |
260 |
992 |
|
250 |
150 |
450 |
385 |
313 |
345 |
42 |
3 |
4.5 |
12-34 |
300 |
460 |
410 |
|
375 |
30 |
4 |
|
12-26 |
350 |
320 |
1266 |
|
A42Y-64 |
20 |
10 |
125 |
90 |
51 |
68 |
22 |
2 |
4 |
4-18 |
25 |
115 |
85 |
58 |
65 |
16 |
2 |
4 |
4-14 |
96 |
85 |
264 |
25 |
16 |
140 |
100 |
58 |
78 |
22 |
2 |
4 |
4-18 |
32 |
140 |
100 |
66 |
78 |
18 |
2 |
4 |
4-18 |
110 |
100 |
277 |
|
32 |
20 |
155 |
110 |
66 |
82 |
24 |
2 |
4 |
4-23 |
40 |
150 |
110 |
76 |
85 |
18 |
3 |
4 |
4-18 |
130 |
110 |
289 |
|
40 |
25 |
170 |
125 |
76 |
95 |
24 |
3 |
4 |
4-23 |
50 |
165 |
125 |
88 |
100 |
20 |
3 |
4 |
4-18 |
130 |
120 |
319 |
|
50 |
32 |
180 |
135 |
88 |
105 |
26 |
3 |
4 |
4-23 |
65 |
185 |
145 |
110 |
120 |
222 |
3 |
4 |
8-18 |
135 |
130 |
389 |
|
65 |
40 |
205 |
160 |
110 |
130 |
28 |
3 |
4 |
8-23 |
80 |
200 |
160 |
121 |
135 |
22 |
3 |
48-18 |
175 |
160 |
493 |
|
|
80 |
50 |
215 |
170 |
121 |
140 |
30 |
3 |
4 |
8-23 |
100 |
235 |
190 |
150 |
160 |
24 |
3 |
4.5 |
8-23 |
175 |
160 |
483 |
|
100 |
65 |
250 |
200 |
150 |
168 |
32 |
3 |
4.5 |
8-26 |
125 |
270 |
220 |
176 |
188 |
28 |
3 |
4.5 |
8-25 |
195 |
195 |
613 |
|
150 |
100 |
345 |
280 |
204 |
240 |
38 |
3 |
4.5 |
8-34 |
200 |
375 |
320 |
260 |
282 |
38 |
3 |
4.5 |
12-30 |
280 |
265 |
894 |
|
A42Y-100 |
20 |
10 |
125 |
90 |
51 |
68 |
22 |
2 |
4 |
4-18 |
25 |
115 |
85 |
58 |
65 |
16 |
2 |
4 |
4-14 |
96 |
85 |
264 |
25 |
16 |
140 |
100 |
58 |
78 |
24 |
2 |
4 |
4-18 |
32 |
140 |
100 |
66 |
78 |
18 |
2 |
4 |
4-18 |
110 |
100 |
277 |
|
32 |
20 |
155 |
110 |
66 |
82 |
24 |
2 |
4 |
4-23 |
40 |
150 |
110 |
76 |
85 |
18 |
3 |
4 |
4-18 |
130 |
110 |
289 |
|
40 |
25 |
170 |
125 |
76 |
95 |
26 |
3 |
4 |
4-23 |
50 |
165 |
125 |
8 |
100 |
20 |
3 |
4 |
4-18 |
130 |
120 |
319 |
|
50 |
32 |
195 |
145 |
88 |
112 |
28 |
3 |
4 |
4-26 |
65 |
185 |
145 |
110 |
120 |
22 |
3 |
4 |
8-18 |
135 |
130 |
389 |
|
65 |
32 |
220 |
170 |
110 |
138 |
32 |
3 |
4 |
8-26 |
80 |
200 |
160 |
121 |
135 |
22 |
3 |
4 |
8-18 |
175 |
160 |
493 |
|
80 |
40 |
230 |
180 |
121 |
148 |
34 |
3 |
4 |
8-26 |
100 |
235 |
190 |
150 |
160 |
24 |
3 |
4.5 |
8-23 |
175 |
160 |
483 |
|
100 |
50 |
265 |
210 |
150 |
172 |
38 |
3 |
4.5 |
8-30 |
125 |
270 |
220 |
176 |
188 |
28 |
3 |
4.5 |
8-25 |
195 |
195 |
613 |
|
150 |
80 |
355 |
290 |
204 |
250 |
46 |
3 |
4.5 |
12-34 |
200 |
375 |
320 |
260 |
282 |
38 |
3 |
4.5 |
12-30 |
280 |
265 |