基本介紹
- 中文名:美標安全閥
- 品牌:美標
- 類屬:安全閥
- 材質:鋼鐵
主要參數,使用,性能規範,故障,
主要參數
壓力級:CLASS 150 - 600
適用介質及溫度:液體,氣體≤300℃ 硝酸類,醋酸類氣體≤200℃ 蒸氣≤550℃
使用
當容器壓力超過設計規定時,安全閥自動開啟,排出氣體降低器內的過高壓,防止容器或管線破壞。而當容器內的壓力降至正常操作壓力時,即自動關閉避免因容器超壓排出全部氣體,從而造成浪費和生產中斷。安全閥主要由閥座、閥瓣(閥芯)和載入機構三部分組成。閥座有的和閥體是一個整體,有的是和閥體組裝在一起的,它與設備連通。閥瓣常連帶有閥桿,它緊扣在閥座上。閥瓣上面是載入機構,載荷的大小可以調節。當設備內的壓力在一定的工作壓力範圍之內時,內部介質作用於閥瓣上面的力小於載入機構加在閥上面的力,兩者之差構成閥瓣與閥座之間的密封力,使閥瓣緊壓著閥座,設備的介質無法排出。當設備內的壓力超過規定的工作壓力並達到安全閥的開啟壓力時,內部介質作用於鬧瓣上面的力大於載入機構施加在它上面的力,於是閥瓣離開閥座,安全閥開啟,設備內的介質即通過閥座排出、如果安全閥的排量大於設備的安全泄放量,設備內壓力即逐漸下降,而且通過短時間的排氣後,壓力即降回至正常工作壓力。此時內壓作用於閥瓣上面的力又小於載入機構施加在它上面的力,閥瓣又緊壓著閥座,介質停止排出,設備保持正常的工作壓力繼續運行。所以,安全閥是通過閥瓣上介質作用力與載入機構作用力的消長,自行關閉或開啟以達到防止設備超壓的目的。
性能規範
CLASS | 150 | 300 | 600 | |
殼體強度 | Ps(MPa) | 3.0 | 7.5 | 15 |
Pk(Mpa) | 0.1~2 | 1.6~5 | 8~15 | |
密封壓力 | Pm | 90% Pk | - | - |
回座壓力 | Pn | ≥90% Pk | - | - |
排放壓力 | Pp | ≤1.1 Pk | - | - |
開啟高度 | H(mm) | ≥ 1/4 d0 | - | - |
適用溫度 | C | ≤300℃ | - | - |
P、R | ≤200℃ | - | - | - |
適用介質 | C | 氣體、液體 | - | - |
P、R | 甲銨 | - | - | - |
直徑代號
代號 | 直徑 | 代號 | 直徑 |
D | 10 | L | 50 |
E | 13 | M | 55 |
F | 16 | N | 60 |
G | 20.5 | P | 72 |
H | 26 | Q | 96 |
J | 33 | R | 115 |
K | 40 | T | 148 |
YFWA42C150R美標安全閥主要尺寸
DN(in) | 尺寸 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
d0 | D | D1 | D2 | b | t | Z-Φd | DN' | D' | D1' | D2' | b' | t' | Z-Φd' | L | L1 | H | - |
1/2"×3/4" | D | 89 | 60.5 | 35 | 12 | 18 | 4-15 | 20 | 98 | 70 | 43 | 14 | 1.6 | 4-15 | 90 | 90 | 260 |
3/4"×1" | D | 98 | 70 | 43 | 14 | 24 | 4-15 | 25 | 108 | 79.5 | 51 | 15 | 1.6 | 4-15 | 96 | 92 | 260 |
1"×1 1/2 " | D | 108 | 79.5 | 51 | 15 | 22 | 4-15 | 40 | 127 | 98.5 | 73 | 18 | 1.6 | 4-15 | 115 | 105 | 280 |
1"×2" | D | 108 | 79.5 | 51 | 15 | 22 | 4-15 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 115 | 105 | 280 |
1 1/2 "×2" | G | 127 | 98.5 | 73 | 18 | 24 | 4-15 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 121 | 124 | 310 |
1 1/2 "×2 1/2 " | G | 127 | 98.5 | 73 | 18 | 24 | 4-15 | 65 | 178 | 139.5 | 105 | 20 | 1.6 | 4-19 | 121 | 124 | 310 |
1 1/2 "×3" | G | 127 | 98.5 | 73 | 18 | 24 | 4-15 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 124 | 130 | 310 |
2"×2 1/2 " | H | 152 | 120.5 | 92 | 18 | 24 | 4-19 | 65 | 178 | 139.5 | 105 | 20 | 1.6 | 4-19 | 124 | 130 | 350 |
2"×3" | J | 152 | 120.5 | 92 | 18 | 24 | 4-19 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 124 | 130 | 350 |
2 1/2 "×4" | J | 178 | 139.5 | 105 | 20 | 27 | 4-19 | 100 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 143 | 137 | 430 |
3"×4" | L | 190 | 152.5 | 127 | 22 | 32 | 4-19 | 100 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 162 | 156 | 490 |
4"×6" | N | 229 | 190.5 | 157 | 24 | 36 | 8-19 | 150 | 279 | 241.5 | 216 | 26 | 1.6 | 8-22 | 229 | 181 | 610 |
6"×8" | P | 279 | 241.5 | 216 | 26 | 36 | 8-22 | 200 | 343 | 298.5 | 270 | 29 | 1.6 | 8-22 | 241 | 240 | 840 |
8"×10" | R | 343 | 298.5 | 270 | 29 | 39 | 8-22 | 250 | 406 | 362 | 324 | 31 | 1.6 | 12-25 | 279 | 276 | 990 |
12"×14" | T | 483 | 432 | 381 | 32 | 42 | 12-25 | 350 | 533 | 476 | 413 | 35 | 1.6 | 12-28 | 370 | 360 | 1040 |
YFA44C300R美標安全閥主要尺寸
(DN)in | 尺寸 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
d0 | D | D1 | D2 | b | t | Z-Φd | DN' | D' | D1' | D2' | b' | t' | Z-Φd' | L | L1 | H | - |
1/2"×3/4" | D | 95 | 66.5 | 35 | 15 | 6 | 4-15 | 20 | 98 | 70 | 43 | 14 | 1.6 | 4-15 | 90 | 90 | 260 |
3/4"×1" | D | 117 | 82.5 | 43 | 16 | 10 | 4-19 | 25 | 108 | 79.5 | 51 | 15 | 1.6 | 4-15 | 96 | 92 | 260 |
1"× 1 1/2 " | D | 124 | 90 | 51 | 18 | 7 | 4-19 | 40 | 127 | 98.5 | 73 | 18 | 1.6 | 4-15 | 115 | 105 | 280 |
1"×2" | D | 124 | 90 | 51 | 18 | 6 | 4-19 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 115 | 105 | 20 |
1 1/2 "× 2" | F | 156 | 114.5 | 73 | 20 | 6 | 4-22 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 121 | 124 | 310 |
1 1/2 "×2 1/2 " | F | 156 | 114.5 | 73 | 20 | 9 | 4-22 | 65 | 178 | 139.5 | 105 | 20 | 1.6 | 4-19 | 121 | 124 | 310 |
1 1/2 "×3" | F | 156 | 114.5 | 73 | 20 | 6 | 4-22 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 124 | 130 | 310 |
2"×2 1/2 " | H | 165 | 127 | 92 | 22 | 6 | 8-19 | 65 | 178 | 139.5 | 105 | 20 | 1.6 | 4-19 | 124 | 130 | 350 |
2"×3" | H | 165 | 127 | 92 | 22 | 6 | 8-19 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 124 | 130 | 350 |
2 1/2 "×4" | J | 190 | 149.5 | 105 | 24 | 7 | 8-22 | 100 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 143 | 137 | 430 |
3"×4" | L | 210 | 168 | 127 | 28 | 10 | 8-22 | 100 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 162 | 156 | 490 |
4"×6" | N | 254 | 200 | 157 | 32 | 12 | 8-22 | 150 | 279 | 241.5 | 216 | 26 | 1.6 | 8-22 | 229 | 181 | 610 |
6"×8" | P | 318 | 270 | 216 | 38 | 10 | 12-22 | 200 | 343 | 298.5 | 270 | 29 | 1.6 | 8-22 | 241 | 240 | 840 |
8"×10" | R | 381 | 330 | 270 | 42 | 10 | 12-25 | 250 | 406 | 362 | 324 | 31 | 1.6 | 12-25 | 279 | 276 | 990 |
10"×12" | T | 445 | 387.5 | 324 | 46 | 10 | 16-28 | 350 | 533 | 476 | 413 | 35 | 1.6 | 12-28 | 350 | 330 | 104 |
註:出口法蘭為150Lb
YFA44C600美標安全閥主要尺寸
(DN)in | 尺寸(mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
do | D | D1 | D2 | b | t | Z-Φd | DN' | D' | D1' | D2' | b' | t' | Z-Φd' | L | L1 | H | - |
3/4"×1" | D | 117 | 82.5 | 43 | 16 | 10 | 4-19 | 25 | 108 | 79.5 | 51 | 15 | 1.6 | 4-15 | 96 | 92 | 280 |
1"×2" | D | 124 | 90 | 51 | 19 | 6 | 4-19 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 115 | 105 | 300 |
1 1/2 "×2" | F | 156 | 114.5 | 73 | 22 | 10 | 4-22 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 152 | 124 | 300 |
1 1/2 "×2 1/2" | F | 156 | 114.5 | 73 | 22 | 9 | 4-22 | 65 | 178 | 139.5 | 105 | 20 | 1.6 | 4-19 | 152 | 124 | 330 |
1 1/2" ×3 | F | 156 | 114.5 | 73 | 22 | 6 | 4-22 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 152 | 124 | 330 |
2"×2 1/2" | H | 165 | 127 | 92 | 26 | 6 | 8-19 | 65 | 178 | 139.5 | 105 | 20 | 1.6 | 4-19 | 162 | 154 | 330 |
2"×3" | H | 165 | 127 | 92 | 26 | 6 | 8-19 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 162 | 154 | 360 |
2 1/2" ×4" | K | 190 | 149.5 | 105 | 29 | 7 | 8-22 | 100 | 229 | 190.5 | 157 | 247 | 1.6 | 8-19 | 143 | 165 | 360 |
3"×4" | K | 210 | 168 | 127 | 32 | 10 | 8-22 | 100 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 162 | 155 | 440 |
4"×6" | N | 273 | 215.9 | 157 | 38 | 12 | 8-25 | 150 | 279 | 241.5 | 216 | 26 | 1.6 | 8-22 | 210 | 200 | 610 |
6"×8" | P | 356 | 292 | 216 | 46 | 10 | 12-28 | 200 | 343 | 298.5 | 270 | 29 | 1.6 | 8-22 | 241 | 240 | 625 |
註:出口法蘭為150Lb
故障
故障二是安全閥到規定壓力時不開啟。主要原因是(1)閥芯與閥座粘住,可做手動排氣試驗排除;(2)彈簧式安全閥的彈簧調整壓力過大,應重新調整;(3)槓桿式安全閥的重錘向後移動,應將重錘移到原來定壓的位置上,用限動螺絲緊固。