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詳細介紹
截止閥（Globe Valve）的啟閉件是塞形的閥瓣，密封面呈平面或錐面，閥瓣沿流體的中心線作直線運動。閥桿的運動形式，有升降桿式（閥桿升降，手輪不升降），也有升降旋轉(zhuǎn)桿式（手輪與閥桿一起旋轉(zhuǎn)升降，螺母設在閥體上）。電動截止閥只適用于全開和全關(guān)，不允許作調(diào)節(jié)和節(jié)流。 電動截止閥結(jié)構(gòu)圖 主要特點及用途 Chief features and usages |
| 1、結(jié)構(gòu)緊湊、設計合理，閥門剛性好，通道流暢，流阻系數(shù)小。 |
| 2、密封面采用不銹鋼和硬質(zhì)合金，使用壽命長 |
| 3、采用柔性石墨填料、密封可靠、操作輕便靈活 |
| 4、驅(qū)動方式分手動、電動、氣動、齒輪傳功，結(jié)構(gòu)型式：彈性楔式單閘板、剛性楔式單閘板和雙閘板型式。 |
| 5、廣泛適用于石油化工，火力發(fā)電廠等油品、水蒸汽管路上作接通或截斷管路中介質(zhì)的啟閉裝置。 |
| 1、Compact structure,neasonnable design,good rigidity,smooth channel,small coefficient of flow resistance. |
| 2、The sealing face uses stainless steel and carbide alloy and is of long duration |
| 3、Using flexible graphite fillings,reliable sealing,light and nimble operation |
| 4、Four driving ways,manually,electrically,air-ioerating and gear-driving,structure type,elastic wedge type with single gate board,right rigi-dwedge type with single or dual-gate board. |
| 5、Widely used as the device of open or close to connect or cut off the medium inside of the pioeline of water,steam or oil goods in steam power plants |
| 主要性能規(guī)范 Chief property and specification |
| 試驗壓力Test pressure |
| 公稱壓力PN(MPa) Nominal pressure | 實驗壓力(MPa)Test pressure | |||
| 殼體Shell | 密封(液)Seal | 密封(氣)Seal | 上密封Back seal | |
| 1.6 | 2.4 | 1.8 | 0.6 | 1.8 |
| 2.5 | 3.8 | 2.8 | 0.6 | 2.8 |
| 4.0 | 6.0 | 4.4 | 0.6 | 4.4 |
| 6.4 | 9.6 | 7.0 | 0.6 | 7.0 |
| 10.0 | 15.0 | 11.0 | 0.6 | 11.0 |
| 16.0 | 24.0 | 18.0 | 0.6 | 18.0 |
| 適用范圍 Suitable scope | ||
| 殼體材料Shell material | 適用介質(zhì)Applicable medium | 適用溫度(℃)Applicable temperature |
| 碳素鋼(C型)Carburizing steel | 水、蒸汽、油品Water,steam,oil goods | ≤425 |
| ； | 硝酸類 Nitric acid | ≤200 |
| ； | 醋酸類 Acetic acid | ≤200 |
| ； | 水、蒸汽、油品Water,steam,oilgoods | ≤550 |
| 主要零件材料Material for main parts | |||||
| 閥體、閥蓋Body,bonnet | 閥板、閥座 Wedge disc,seat rign | 閥桿 Stem | 閥桿螺母 Yoke nut | 填料 Packing | 手輪 Hand wheel |
| 碳素鋼 Carburizing steel | 優(yōu)質(zhì)碳鋼+硬質(zhì)合金或不銹鋼 High-grade carbon steel+carbide alloy or stainleel | 鉻不銹鋼Cr.stainless steel | 鋁青銅AI bronze | 石墨石棉盤根Graphite,asbestos coils | 可鍛鑄鐵 Foraeable cast-iron |
| 鉻鎳鈦鋼Cr.Ni.Tisteel | 不銹鋼、不銹鋼+硬質(zhì)合金Stainless steel or +carbide alloy | 鉻鎳鈦不銹鋼Cr.Ni.Ti stainless stee | 鋁青銅AI bronze | 浸聚四氟乙Dipping polyterafluo-roethylene | 可鍛鑄鐵Foraeable cast-iron |
| 鉻鎳鉬鈦鋼Cr.Ni.Mo.Tisteel | 不銹鋼、不銹鋼+硬質(zhì)合金Stainless steel or +carbide alloy | 鉻鎳鉬鈦不銹鋼Cr.Ni.Mo.Ti stainless stee | 鋁青銅AI bronze | 烯石棉盤根Asbestos coil | 可鍛鑄鐵Foraeable cast-iron |
| 鉻鉬鋼Cr.Mo streel | 合金鋼+硬質(zhì)合金Alloy steel+carbide alloy | 鉻鉬鋁鋼Cr.Mo.Ai steel | 鋁青銅AI bronze | 柔性石墨Flexibie graphite | 可鍛鑄鐵Foraeable cast-iron |
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