產(chǎn)品結(jié)構(gòu)特點(diǎn) Construction features
本產(chǎn)品主體為球閥與蝶閥的結(jié)合,主要結(jié)構(gòu)類似蝶閥,而閥芯為部分球體即閥芯取球體實(shí)際有效的一部分即密封面附近的一部分,閥座為串動(dòng)環(huán)體,閥芯轉(zhuǎn)動(dòng)中心與球體中心不同心。剖面圖上可見球體的弧面與環(huán)錐面接觸的點(diǎn)與球中心形成的垂足都不與環(huán)錐面剖線垂直,換言之,閥座密封面不是球體的切線形成的連續(xù)面。有反向作用壓力或反向作用壓力大于正向作用壓力時(shí)形成反壓差,閥座串動(dòng)自動(dòng)補(bǔ)償密封間隙,使之達(dá)到雙向密封。作用壓力越大,雙向密封的效果越好。 This product is subject to the combination of ball valve and butterfly valve, the main structure similar to butterfly valve, the valve core for part of the sphere which take ball valve core part of the real effective near the sealing surface, as part of the seat for the ring body, valve core center of rotation is different from a sphere center. Profile is visible on the sphere surface contact with ring cone with the pedal is not formed by the center points and the ball ring cone vertical profile, in other words, the valve seat sealing surface is not a sphere A continuous surface of a line. With reverse pressure or reverse the role against the differential pressure is greater than the positive effect when, seating series of dynamic self-compensation seal clearance, to two-way sealing. The more pressure, the better the effect of the bidirectional seal.
產(chǎn)品特征 Spericfications
適用介質(zhì):水、氣、油品、天然氣和酸堿腐蝕性介質(zhì) 適用溫度:-196~150℃ 驅(qū)動(dòng)方式:手動(dòng)、氣動(dòng)、電動(dòng)、液動(dòng)等 公稱壓力:1.0~4.0MPa 公稱通徑:DN100~2000mm Applicable media: water, gas, oil, gas and acid and alkali corrosive medium Applicable temperature: -196~150℃ Driver: manual, pneumatic, electric, hydraulic, etc Nominal pressure: 1.0~4.0MPa Nominal size: DN100~2000mm
技術(shù)規(guī)范 Technical specification
設(shè)計(jì)依據(jù) Design reference
GB系列 GB series
設(shè)計(jì)標(biāo)準(zhǔn) Design standard
GB/T12237
結(jié)構(gòu)長(zhǎng)度 Face to face
GB/T12221
連接法蘭 End flange
GB/T9113 HG20592
試驗(yàn)和檢驗(yàn) Test & inspection
GB/T13927
試驗(yàn)壓力 Test prssure
壓力等級(jí) Pressure grade
試驗(yàn)壓力 Test pressure
公稱壓力 PN Nominal pressure
殼體試驗(yàn) Sheil test
正密封試驗(yàn) Sealing test
反密封試驗(yàn) Sealing test
氣密封試驗(yàn) Air seal test
1.0
1.5
1.1
-
0.6
1.6
2.4
1.76
-
0.6
2.5
3.75
2.75
-
0.6
4.0
6.0
4.4
-
0.6
球閥結(jié)構(gòu)長(zhǎng)度和外接尺寸 Main connection dimensions