閘閥是最常用的截斷閥之一,主要用來接通或截斷管路中的介質,不適用于調節(jié)介質流量,閘閥適用的壓力、溫度及口徑范圍很大,尤其適用于中、大口徑的管道。 1、閘閥的主要優(yōu)點 (1)流體阻力小,閘閥閥體內部介質通道是直通的,介質流經閘閥時不改變其流動方向,因而流動阻力較小 (2)啟閉較省力,啟閉時閘板運動方向與介質流動方向相垂直,與截止閥相比、閘閥的啟閉較為省力。 (3)介質流動方向一般不受限制。介質可從閘閥兩側任意方向流過,均能達到接通或截斷的目的。便于安裝,適用于介質的流動方向可能改變的管路中。楔式閘閥(手動)主要特點及用途1、結構緊湊、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、驅動方式分手動、電動、氣動、齒輪傳動,結構型式: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的啟閉裝置。設計與制造標準 設計與制造GB/T12234法蘭尺寸JB/T79GB/T9113結構長度GB/T12221檢驗與試驗GB/T13927JB/T9092 適用范圍 殼體材料適用介質適用溫度 (℃)碳素鋼 (C型)水、蒸汽、油品≤425鉻鎳鈦鋼 (P型)硝酸類≤200鉻鎳鉬鈦鋼 (R型)醋酸類≤200鉻鉬鋼 (1型)水、蒸汽、油品≤550 主要性能規(guī)范 公稱壓力 PN(MPa)試驗壓力 (MPa)殼體密封 (液)密封 (氣)上密封1.62.41.80.61.82.53.82.82.84.06.O4.44.46.49.67.07.010.015.O11.011.01624.018.018.0 主要零件材料 閥體、閥蓋閘板、閥座閥桿閥桿螺母填料手輪碳素鋼優(yōu)質碳鋼 +硬質合金或不銹鋼鉻不銹鋼鋁青銅石墨石棉盤根可鍛鑄鐵 球墨 主要尺寸及重量公稱通徑 DN(mm)尺寸(mm)重量 (kg)LDD1D2bfZ-dHH1DoZ40H/Y-16 Z40Y-16P Z40Y-16R Z40W-16P Z40Y-16I Z41H/Y-16 Z41Y-16P Z41Y-16R Z40W-16P Z41W-16R Z41Y-16I151309565451424-1422024012052015010575551424-14255284140652516011585651424-14275303160932180135100781624-182803211801240200145110851634-18300352200265502501601251001634-1835843824029652651801451201834-1837545024033802801951601352038-18433528280451003002151801552038-18502620320631253252452101852238-186127533601081503502802402102438-2367684736013420040033529526526312-23820103940019225045040535532040312-25969124545027330050046041037540312-251142147256037935055052047043534416-251280145064059040060058052548536416-301452188764085045065064058554540420-301541201172090750070070565060844420-341676218172095860080084077071848520-41187423468001112Z40H/Y-25 Z40Y-25P Z40Y-25R Z40W-25P Z40W-25R Z40Y-25I Z41H/Y-25 Z41Y-25P Z40Y-25R Z41W-25P Z41W-25R Z41Y-25I151309565451624-14220240120552015010575551624-1425528414072516011585651624-1427530316011321801351OO781824-182803211801440200145110851834-1830035220030502501601251002034-1835843824034652651801451202238-1837545024036802801951601352238-18433528280501003002301901602438-23502620320691253252702201882838-256127533601161503503002502183038-2567684736014120040036031027834312-25820103940019225045042537033236312-30969124545020730060048543039040416-301142147256040035055055049044844416-341280145064063140060061O55050548416-341452188764090045065066060055550420-3415412011720101350070073066061052420-4116762181720116660080084077071856520-41187423468001258注:1、型號前加K為抗硫系列。2、亦可提供Z42系列產品。3、驅動裝置可配正齒輪及傘齒輪等。4、更大規(guī)格、壓力或其他結構型式可在合同中注明,并可及時交貨。 主要尺寸及重量公稱通徑 DN(mm)尺寸(mm)重量 (kg)LDD1D2D6bff2Z-dHH1DOZ40H/Y-40 Z40Y-40P Z40Y-40R Z40W-40P Z40W-40R Z40Y-40I Z41H/Y-40 Z41Y-40P Z41Y-40R Z41W-40P Z41W-40R Z41Y-40I2015010575555116244-1425628514082516011585655816244-142753051609332180135100786618244-182873221801240200145110857618344-18323369200165502501601251008820344-18372440280296528018014512011022348-18395473280398031019516013512122348-1845755232052100350230190160150243458-2355267136080125400270220188176283458-25634726400127150450300250218204303458-25708883400154200550375320282260383458-3085810864502632506504453853453134234512-34101512985603683007505104504083644644512-3412031535640547350850570510465422524516-3413411678640679400950655585535474584516-4114921903720953Z41Y-64P Z41Y-64R Z41W-64P Z41W-64R Z41Y-64I2019012590685120244-18258288180925210135100785822244-183103412001032230150110826624244-233203532001440240165125957624344-2336038924030502501751351058826344-23372448280396528020016013011028348-23395475280438031021017014012130348-2345855332060100350250200168150323458-2555367936089125400295240202176363458-30638779400140150450340280240204383458-347188934502072005504053453002604434512-3487311005603252506504704003523134834512-41105313326404673007505304604123645444516-4112031535640590Z40H/Y -100 Z40Y-100P Z40Y-100R Z40W-100P Z40W-100R Z40Y-100I Z41H/Y-100 Z41Y-100P Z41Y-100R Z41W-100P Z41W-100R Z41Y-100I25210135100785824244-183103412001332230150110826624244-183203532402040240165125957626344-2336038928060502501951451128828344-23490558360506528022017013811032348-25540622400708031023018014812134348-25573671400100100350265210172150383458-30575671400110125400310250210176423458-347448925601801504503502902502044634512-348009725602502005504303603122605434512-418009725603602506505004303823136034512-41105013056404853007505855004423647044516-1812081506640633Z40H/Y-160 Z40Y-160P Z40Y-160R Z40W-160P Z40W-160R Z40Y-160I Z41H/Y-160 Z41Y-160P Z41Y-160R Z41W-160P Z41W-160R Z41Y-160I1517011075524024244-1823025020072019013090625126244-232602882001025210140100725828244-232803102801432230165115856630244-253123503202140240175125927632344-2735039532026503002151651328836348-25512612360736534024519015211044348-305606773601108039026020516812146348-30585686400141100450300240200150483458-34631751450185125525355285238176603458-417238685603201506003903182702046634512-41820997640462200