闸阀是最常用的截断阀之一,主要用来接通或截断管路中的介质,不适用于调节介质流量,闸阀适用的压力、温度及口径范围很大,尤其适用于中、大口径的管道。 1、闸阀的主要优点 (1)流体阻力小,闸阀阀体内部介质通道是直通的,介质流经闸阀时不改变其流动方向,因而流动阻力较小 (2)启闭较省力,启闭时闸板运动方向与介质流动方向相垂直,与截止阀相比、闸阀的启闭较为省力。 (3)介质流动方向一般不受限制。介质可从闸阀两侧任意方向流过,均能达到接通或截断的目的。便于安装,适用于介质的流动方向可能改变的管路中。楔式闸阀(手动)主要特点及用途1、结构紧凑、设计合理,阀门刚性好,通道流畅,流阻系数小。2、密封面采用不锈钢和硬质合金,使用寿命长。3、采用柔性石墨填料、密封可靠、操作轻便灵活。4、驱动方式分手动、电动、气动、齿轮传动,结构型式:弹性楔式单闸板、刚性楔式单闸板和双闸板型式。5、广泛适用于石油化工、火力发电厂等油品、水蒸汽管路上作接通或截断管路中介质的启闭装置。设计与制造标准 设计与制造GB/T12234法兰尺寸JB/T79GB/T9113结构长度GB/T12221检验与试验GB/T13927JB/T9092 适用范围 壳体材料适用介质适用温度 (℃)碳素钢 (C型)水、蒸汽、油品≤425铬镍钛钢 (P型)硝酸类≤200铬镍钼钛钢 (R型)醋酸类≤200铬钼钢 (1型)水、蒸汽、油品≤550 主要性能规范 公称压力 PN(MPa)试验压力 (MPa)壳体密封 (液)密封 (气)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 阀体、阀盖闸板、阀座阀杆阀杆螺母填料手轮碳素钢优质碳钢 +硬质合金或不锈钢铬不锈钢铝青铜石墨石棉盘根可锻铸铁 球墨 主要尺寸及重量公称通径 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、型号前加K为抗硫系列。2、亦可提供Z42系列产品。3、驱动装置可配正齿轮及伞齿轮等。4、更大规格、压力或其他结构型式可在合同中注明,并可及时交货。 主要尺寸及重量公称通径 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