A44Y、A48Y蒸汽鍋爐安全閥適用于工作溫度≤350℃的蒸汽、空氣等介質(zhì)的設(shè)備或管路上。作為超壓保護(hù)裝置。是一種由進(jìn)口靜壓開啟的自動(dòng)泄壓防護(hù)裝置,它是壓力容器重要的安全附件之一,它的功能是：當(dāng)容器內(nèi)壓力超過(guò)某一定值時(shí),依靠介質(zhì)自身的壓力自動(dòng)開啟閥門,迅速排出一定數(shù)量的介質(zhì)。當(dāng)容器內(nèi)的壓力降到允許值時(shí),閥又自動(dòng)關(guān)閉,使容器內(nèi)壓力始終低于允許壓力的上限,自動(dòng)防止因超壓而可能出現(xiàn)的事故,所以安全閥又被稱為壓力容器的最終保護(hù)裝置。
蒸汽安全閥主要零部件材料
NO | 零件名稱 | 材料 |
1 | 閥體 | WCB |
2 | 閥座 | ZG2Cr13 |
3 | 調(diào)節(jié)圈 | ZG2Cr13 |
4 | 閥瓣 | 2Cr13 |
5 | 導(dǎo)向套 | 2Cr13 |
6 | 閥蓋 | ZG230-450 |
7 | 彈簧 | 50CrVA |
8 | 閥桿 | 2Cr13 |
9 | 扳手 | ZG200-400 |
10 | 調(diào)整螺桿 | 45 |
11 | 保護(hù)罩 | ZG200-400 |
密封面材料 | "H"堆焊D507,"Y"堆焊Co基硬質(zhì)合金 |
蒸汽安全閥主要連接尺寸
型號(hào) | 公稱通徑 | do | D | K | g | g1 | b | f | f1 | Z-?d | f | L | L1 | H |
A48Y-16C A44Y-16C A44Y-16P A44Y-16R | 20 | 15 | 105 | 75 | 55 | 16 | 2 | 4-14 | 2 | 110 | 95 | 411 | ||
25 | 16 | 115 | 85 | 65 | 16 | 2 | 4-14 | 2 | 110 | 95 | 411 | |||
32 | 20 | 140 | 100 | 78 | 18 | 2 | 4-18 | 3 | 115 | 100 | 411 | |||
40 | 25 | 150 | 110 | 85 | 18 | 3 | 4-18 | 3 | 120 | 110 | 472 | |||
50 | 32 | 165 | 125 | 100 | 20 | 3 | 4-18 | 3 | 135 | 120 | 532 | |||
65 | 40 | 185 | 145 | 120 | 20 | 3 | 4-18 | 3 | 160 | 140 | 556 | |||
80 | 50 | 200 | 160 | 135 | 20 | 3 | 8-18 | 3 | 170 | 135 | 561 | |||
100 | 65 | 220 | 180 | 155 | 20 | 3 | 8-18 | 3 | 195 | 175 | 667 | |||
125 | 80 | 250 | 210 | 185 | 22 | 3 | 8-18 | 3 | 210 | 190 | 857 | |||
150 | 100 | 285 | 240 | 210 | 24 | 3 | 8-23 | 3 | 255 | 230 | 915 | |||
200 | 125 | 340 | 295 | 265 | 26 | 3 | 12-23 | 3 | 300 | 260 | 1073 | |||
250 | 150 | 405 | 355 | 320 | 30 | 3 | 12-26 | 4 | 350 | 320 | 1307 | |||
300 | 220 | 460 | 410 | 375 | 30 | 4 | 12-26 | 4 | 370 | 350 | 1233 | |||
350 | 250 | 520 | 470 | 435 | 34 | 4 | 16-26 | 4 | 500 | 450 | 1711 | |||
400 | 280 | 580 | 525 | 485 | 36 | 4 | 16-30 | 4 | 500 | 450 | 1780 | |||
A48Y-25 A44Y-25 A44Y-25P A44Y-25R | 20 | 15 | 105 | 75 | 55 | 16 | 2 | 4-14 | 2 | 110 | 95 | 411 | ||
25 | 16 | 115 | 85 | 65 | 16 | 2 | 4-14 | 2 | 110 | 95 | 411 | |||
32 | 20 | 140 | 100 | 78 | 18 | 2 | 4-18 | 3 | 115 | 100 | 411 | |||
40 | 25 | 150 | 110 | 85 | 18 | 3 | 4-18 | 3 | 120 | 110 | 472 | |||
50 | 32 | 165 | 125 | 100 | 20 | 3 | 4-18 | 3 | 135 | 120 | 532 | |||
65 | 40 | 185 | 145 | 120 | 22 | 3 | 8-18 | 3 | 160 | 140 | 556 | |||
80 | 50 | 200 | 160 | 135 | 22 | 3 | 8-18 | 3 | 170 | 135 | 561 | |||
100 | 65 | 230 | 190 | 160 | 24 | 3 | 8-23 | 3 | 195 | 175 | 667 | |||
125 | 80 | 270 | 220 | 188 | 28 | 3 | 8-26 | 3 | 210 | 190 | 857 | |||
150 | 100 | 300 | 250 | 218 | 30 | 3 | 8-26 | 3 | 255 | 230 | 915 | |||
200 | 125 | 360 | 310 | 278 | 34 | 3 | 12-26 | 3 | 300 | 260 | 1073 | |||
250 | 150 | 425 | 370 | 332 | 36 | 3 | 12-30 | 4 | 350 | 320 | 1307 | |||
300 | 220 | 485 | 430 | 390 | 40 | 4 | 16-30 | 4 | 370 | 350 | 1233 | |||
350 | 250 | 555 | 490 | 448 | 44 | 4 | 16-34 | 4 | 500 | 450 | 1711 | |||
400 | 280 | 620 | 550 | 505 | 48 | 4 | 16-36 | 4 | 500 | 450 | 1780 |
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