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【安全回流閥的介紹】
安全回流閥適用于液化石油氣泵出口的液相出口管路上，用于超壓介質(zhì)的安全回流，標(biāo)準(zhǔn)回流壓差大于0.5MPa時(shí)液化石油氣能自動(dòng)回流入罐。可調(diào)整回流壓差為0.3~0.8MPa，或按用戶要求確定，當(dāng)泵前壓力超過規(guī)定值時(shí)，閥門自動(dòng)開啟，并起安全回流作用，保證設(shè)備和管路的安全運(yùn)行。
【安全回流閥主要設(shè)計(jì)參數(shù)】
|
設(shè)計(jì)、制造 |
法蘭連接 |
結(jié)構(gòu)長度 |
公稱通徑 |
公稱壓力 |
|
GB/T12243 |
JB/T79-94、GB9113-2000 |
GB12221-89 |
DN25~DN300mm |
PN1.6、2.5、4.0MPa |
【安全回流閥主要性能參數(shù)】
|
公稱壓力 |
殼體試驗(yàn) |
密封試驗(yàn) |
開啟壓力 |
適用介質(zhì) |
適宜溫度 |
|
1.6 |
2.4 |
0.9PK |
用戶確定 |
液化氣、天然氣 等非腐蝕性介質(zhì) |
-40~+80℃ |
|
2.5 |
3.75 |
||||
|
4.0 |
4.4 |
【安全回流閥結(jié)構(gòu)圖】
【安全回流閥主要零部件材料】
| NO. | 零件名稱 | AH42F-C A42F-C 材料 |
| 1 | 閥座 | 2Cr13 |
| 2 | 閥體 | WCB |
| 3 | 調(diào)節(jié)圈 | 2Cr13 |
| 4 | 反沖盤 | 2Cr13 |
| 5 | 閥瓣 | 2Cr13+PTFE |
| 6 | 導(dǎo)向套 | 2Cr13 |
| 7 | 閥蓋 | ZG230-450 |
| 8 | 彈簧 | 50CrVA |
| 9 | 閥桿 | 2Cr13 |
| 10 | 調(diào)整螺桿 | 45 |
| 11 | 閥帽 | ZG200-400 |
【安全回流閥主要外形尺寸】
| 型號(hào) | 公稱通徑 | do | D | K | g | g1 | b | f | f1 | Z-?d | DN’ | D1 | K1 | g2 | b1 | f’ | Z1-?d1 | L | L1 | ≈H |
|
AH42F-16C A42F-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 | |
|
AH42F-25 A42F-25 |
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 | |
|
AH42F-40 A42F-40 |
20 | 15 | 105 | 25 | 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 |
【安全回流閥安裝說明】
①安全回流閥都應(yīng)水平安裝。
②安全回流閥出口處應(yīng)無阻力，避免產(chǎn)生受壓現(xiàn)象。
③安全回流閥在安裝前應(yīng)專門測(cè)試，并檢查其官密封性。
④對(duì)使用中的安全回流閥應(yīng)作定期檢查。
