軌道球閥在啟閉時(shí),球體先偏轉(zhuǎn)-δ角,然后轉(zhuǎn)動(dòng),開(kāi)關(guān)全過(guò)程中球體與閥座脫離,故閥座不會(huì)被擦傷,并且啟閉扭矩小。傳統(tǒng)的球閥,無(wú)論是浮動(dòng)式還是固定式,球體與閥座始終接觸,開(kāi)關(guān)扭矩大,密封面容易損傷。
軌道球閥主要零件材料
零件名稱 | 材料 | |||
閥體 | WCB | ZG1Cr5Mo | 18-8CrNi | 18-12CrNiMo |
閥蓋 | WCB | ZG1Cr5Mo | 18-8CrNi | 18-12CrNiMo |
閥桿 | 2Cr13 | 38CrMoA1 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2aTi |
球體 | WCB+HCr | 1Cr5Mo | 18-8CrNi | 18-12CrNiMo |
閥座 | PTFE/13Cr/CrNi SS+SLITE | |||
螺柱 | B7/35CrMoA | 1Cr17Ni2 | ||
螺母 | 2H/45 | 2Cr13 | ||
填料 | PTFE/增強(qiáng)柔性石墨 |
應(yīng)用規(guī)范
1、設(shè)計(jì)、制造按GB/12237
2、結(jié)構(gòu)長(zhǎng)度按QB/ZMV 107
3、連接法蘭JB/T79.1~79.4 GB/T9113.1~9113.4
4、閥門檢查和試驗(yàn)按GB/13927
GDQ47型PN1.6~2.5MPa主要外形尺寸
公稱通徑DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 |
L | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 730 | 850 | 980 | 1100 | 1200 | 1250 | 1450 |
H1 | 220 | 230 | 240 | 260 | 307 | 360 | 410 | 483 | 512 | 543 | 581 | 617 | 672 | 723 | 758 | 791 | 828 | 870 | 940 |
H2 | 450 | 486 | 525 | 550 | 610 | 640 | 640 | 675 | 710 | 740 | 820 | 905 | 955 | 990 | 1050 | 1100 | 1270 | 1450 |
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H3 | 415 | 455 | 500 | 535 | 580 | 605 | 605 | 620 | 640 | 685 | 735 | 850 | 900 | 920 | 1100 | 1250 | 1340 | 1555 |
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H4 | 370 | 400 | 440 | 460 | 480 | 500 | 550 | 600 | 650 | 713 | 760 | 820 | 875 | 930 | 962 | 1020 | 1285 | 1625 |
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GDQ47型PN4.0MPa主要外形尺寸
公稱通徑DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 180 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 |
L | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 730 | 850 | 980 | 1100 | 1200 | 1250 | 1450 |
H1 | 230 | 240 | 260 | 280 | 320 | 360 | 436 | 492 | 527 | 607 | 649 | 701 | 750 | 750 | 790 | 832 | 875 | 910 | 980 |
H2 | 486 | 525 | 550 | 610 | 640 | 640 | 675 | 710 | 740 | 820 | 905 | 955 | 990 | 105 | 1100 | 1270 | 1450 |
|
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H3 | 455 | 500 | 535 | 580 | 605 | 605 | 620 | 640 | 685 | 735 | 850 | 900 | 920 | 1100 | 1250 | 1340 | 1555 |
|
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H4 | 400 | 440 | 460 | 480 | 500 | 550 | 600 | 650 | 713 | 777 | 835 | 890 | 950 | 980 | 1040 | 1305 | 1650 |
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