機(jī)械密封培訓(xùn)課件

AESSEAL?

中級(jí)培訓(xùn)教程PRESENTEDBYA.E.S.ChinaEngineeringLtd.AESSEAL?1Copyright1997A.E.S.EngineeringLtd.

A.E.S.國(guó)際工程集團(tuán)有限公司使用AESSEAL商標(biāo),是機(jī)械密封領(lǐng)域內(nèi)世界一流專家,是歐美密封行業(yè)最大的公司之一，公司專業(yè)設(shè)計(jì)、制造和提供高標(biāo)準(zhǔn)精密機(jī)械密封和密封輔助系統(tǒng)，主要有泵用機(jī)封和釜用機(jī)封兩大類，同時(shí)根據(jù)客戶要求提供特殊設(shè)計(jì)的產(chǎn)品。AESSEAL的產(chǎn)品通過150多個(gè)分銷商銷往世界各地，其產(chǎn)品廣泛應(yīng)用于石油化工、電力、鋼鐵、食品、造船、造紙等各行業(yè)，曾獲得“英國(guó)女王工業(yè)獎(jiǎng)”及“2000年具有最佳發(fā)展前景的企業(yè)獎(jiǎng)”。

A.E.S.公司簡(jiǎn)介Copyright1997A.E.S.Engineer2Copyright1997A.E.S.EngineeringLtd.A.E.S.公司以智能化軟件設(shè)計(jì)、最先進(jìn)的生產(chǎn)技術(shù)和設(shè)備、多種模塊式元件的組合及通過ISO9001體系認(rèn)證的產(chǎn)品設(shè)計(jì)為客戶提供快捷、方便的服務(wù)。我們對(duì)本公司的密封產(chǎn)品提供全球技術(shù)支持服務(wù)，包括24小時(shí)服務(wù)和現(xiàn)場(chǎng)的工程技術(shù)服務(wù)。我們引以為榮的是通過合理安排及大規(guī)模生產(chǎn)而比其它供貨商節(jié)約25%的費(fèi)用，而這部分節(jié)約的生產(chǎn)成本通過產(chǎn)品價(jià)格已讓利給我們的客戶。A.E.S.中國(guó)有限公司是A.E.S.公司在中國(guó)的唯一一家子公司,其產(chǎn)品全部為英國(guó)A.E.S.公司原裝進(jìn)口,按A.E.S.公司標(biāo)準(zhǔn)建立了最嚴(yán)格的銷售及技術(shù)服務(wù)體系，讓客戶得到最可靠、最滿意的服務(wù)是我們公司的宗旨。Copyright1997A.E.S.Engineer3Copyright1999A.E.S.EngineeringLtd.INTERNATIONALREPRESENTATIONDISTRIBUTORAESSEAL?GROUPA.E.S.公司國(guó)際分布分銷商A.E.S.公司寧波Copyright1999A.E.S.Engineer4IN4489A.E.S.公司產(chǎn)品系列IN4489A.E.S.公司產(chǎn)品系列5Copyright1997A.E.S.EngineeringLtd.什么是機(jī)械密封？

機(jī)械密封也稱端面密封，其至少有一對(duì)垂直于旋轉(zhuǎn)軸線的端面，該端面在流體壓力及補(bǔ)償機(jī)械彈力的作用下，加之輔助密封的配合，與另一端面保持貼合并相對(duì)轉(zhuǎn)動(dòng)，從而防止流體泄漏。Copyright1997A.E.S.Engineer6Copyright1997A.E.S.EngineeringLtd.機(jī)械密封的組成A.由靜環(huán)和動(dòng)環(huán)組成的一對(duì)密封端面，也稱摩擦副。B.以彈性元件為主的補(bǔ)償緩沖機(jī)構(gòu)（彈簧、波紋管）。C.輔助密封圈(O形、V形、橡膠皮碗等）D.使動(dòng)環(huán)和軸一起旋轉(zhuǎn)的傳動(dòng)機(jī)構(gòu)。E.其它零部件（軸套、壓蓋、定位銷、墊片等）Copyright1997A.E.S.Engineer7Copyright1997A.E.S.EngineeringLtd.為什么要使用機(jī)械密封

密封性能好使用壽命長(zhǎng)軸或軸套無磨損軸功率消耗小不需經(jīng)常調(diào)整應(yīng)用范圍廣Copyright1997A.E.S.Engineer8機(jī)械密封分類單端面和雙端面內(nèi)裝式和外裝式平衡型與非平衡型彈簧內(nèi)置式和彈簧外置式彈簧式和波紋管式普通兩部件式和集裝式多（?。椈尚秃蛦危ù螅椈尚虲opyright1997A.E.S.EngineeringLtd.機(jī)械密封分類單端面和雙端面Copyright1997A9機(jī)械密封原理液膜的形成摩擦/熱雜質(zhì)/固體顆粒

工藝流體動(dòng)環(huán)靜環(huán)密封腔體Copyright1997A.E.S.EngineeringLtd.軸機(jī)械密封原理液膜的形成工藝流體動(dòng)環(huán)靜環(huán)密封10什么是液膜?單端面密封工藝介質(zhì)冷卻液

雙端面密封緩沖液（低壓）隔離液（高壓）Copyright1997A.E.S.EngineeringLtd.什么是液膜?單端面密封Copyright1997A.E11Copyright1997A.E.S.EngineeringLtd.端面干接觸/“干磨”過度磨損產(chǎn)生大量摩擦熱固體顆粒損壞端面如沒有液膜形成會(huì)發(fā)生什么?Copyright1997A.E.S.Engineer12Copyright1997A.E.S.EngineeringLtd.提供潤(rùn)滑防止固體顆粒損壞端面液膜能幫助我們做什么?

防止端面直接接觸減少摩擦熱的生成Copyright1997A.E.S.Engineer13Copyright1997A.E.S.EngineeringLtd.工藝流體汽化/腐蝕率增加液膜的狀態(tài)發(fā)生改變/固體顆粒沉積摩擦熱帶來的后果減少或無法形成液膜Copyright1997A.E.S.Engineer14機(jī)械密封成功的關(guān)鍵“形成并保持一種穩(wěn)定的液膜”Copyright1997A.E.S.EngineeringLtd.機(jī)械密封成功的關(guān)鍵“形成并保持一種穩(wěn)定的液膜”Copyrig15Copyright1997A.E.S.EngineeringLtd.最初的軸封—盤根缺點(diǎn)：泄漏量大（每分鐘約7滴)軸磨損嚴(yán)重軸功率損耗大經(jīng)常需要調(diào)整使用壽命短優(yōu)點(diǎn)：價(jià)格低廉安裝方便Copyright1997A.E.S.Engineer16Copyright1997A.E.S.EngineeringLtd.第一代機(jī)械密封（分離式、非平衡型、單個(gè)大彈簧）優(yōu)點(diǎn)：初始價(jià)格較低

缺點(diǎn)：容易產(chǎn)生人為安裝誤差彈簧和介質(zhì)接觸易堵塞O形圈及動(dòng)靜環(huán)材質(zhì)不過關(guān)動(dòng)環(huán)受彈簧力不均端面比壓受介質(zhì)影響大使用壽命低Copyright1997A.E.S.Engineer17Copyright1997A.E.S.EngineeringLtd.第二代機(jī)械密封（分離式、多彈簧）優(yōu)點(diǎn)：動(dòng)環(huán)受彈簧力均勻價(jià)格較低缺點(diǎn)：同第一代機(jī)械密封Copyright1997A.E.S.Engineer18Copyright1997A.E.S.EngineeringLtd.第三代機(jī)械密封（卡式或集裝式）優(yōu)點(diǎn)：無人為安裝誤差彈簧不與介質(zhì)接觸不會(huì)堵塞優(yōu)異的O形圈及動(dòng)靜環(huán)材質(zhì)密封環(huán)有良好的補(bǔ)償性O(shè)形圈無磨損設(shè)計(jì)壽命3年Copyright1997A.E.S.Engineer19Copyright1997A.E.S.EngineeringLtd.泵的基本結(jié)構(gòu)油封軸軸承壓蓋泵座地腳螺栓密封腔體泵體葉輪葉輪螺母填料（機(jī)械密封）壓蓋軸承箱填料（機(jī)械密封）軸承Copyright1997A.E.S.Engineer20Copyright1997A.E.S.EngineeringLtd.集裝式機(jī)械密封的結(jié)構(gòu)動(dòng)環(huán)靜環(huán)靜環(huán)膠圈彈簧防轉(zhuǎn)銷釘定位環(huán)驅(qū)動(dòng)螺釘唇封冷卻孔壓蓋壓蓋墊片彈簧套桶軸套軸套膠圈套筒膠圈補(bǔ)償環(huán)Copyright1997A.E.S.Engineer21Copyright1997A.E.S.EngineeringLtd.A.E.S.系列產(chǎn)品分類

動(dòng)環(huán)組件

SAITMNCETMCSTM

靜環(huán)組件

L型T型USI型

泵用集裝式密封

●單端面泵用集裝式密封ConvertorⅡTMSCUSITMCURCTMBi-MetalCURCTMSMSSTMCURETM

●雙端面泵用集裝式密封CDSATMBi-MetalCDSATMDMSFTM●腔式泵密封PCPSTM

●剖分式密封RDSTM

Copyright1997A.E.S.Engineer22Copyright1997A.E.S.EngineeringLtd.

●非金屬元件密封FI-DSNMTML-SEALTMFI-DSNM-RTM攪拌器密封●密封組件ESMTMNCMTMBuffer

CanisterTM

●攪拌器集裝式密封CSMTMCDMTMCDMSCTMCSWIBTMDSWIBTMMixmasterⅣTMMixmasterⅤTMMixmasterⅥTM金屬波紋管密封系列

BSAITMBSIVTMBQFDTMBDQDTM

輔助系統(tǒng)

PUMPPACTMSSE10TMAS15TM

Copyright1997A.E.S.Engineer23SAI?動(dòng)環(huán)組件和L型靜環(huán)Copyright1997A.E.S.EngineeringLtd.SAI?動(dòng)環(huán)組件和L型靜環(huán)Copyright199724NCE?-應(yīng)用于非化學(xué)工況的外置式動(dòng)環(huán)組件Copyright1997A.E.S.EngineeringLtd.NCE?-應(yīng)用于非化學(xué)工25—代替盤根的最佳集裝式密封Copyright1997A.E.S.EngineeringLtd.CONVERTORⅡTMCopyright1997A.E.S.Engineer26Copyright1997A.E.S.EngineeringLtd.SCUSITM短型單端面集裝式機(jī)械密封Copyright1997A.E.S.Engineer27Copyright1997A.E.S.EngineeringLtd.CURCTM單端面集裝式機(jī)械密封Copyright1997A.E.S.Engineer28SMSSTM單端面整裝固定型集裝式機(jī)械密封

Copyright1997A.E.S.EngineeringLtd.SMSSTM單端面整裝固定型集裝Copyright199729CDSATM雙端面集裝式機(jī)械密封Copyright1997A.E.S.EngineeringLtd.CDSATM雙端面集裝式機(jī)械密封Copyright19930Copyright1997A.E.S.EngineeringLtd.Bi-MetalCDSATM具備特殊合金部件的雙端面集裝式機(jī)械密封Copyright1997A.E.S.Engineer31RDSTM剖分式機(jī)械密封Copyright1997A.E.S.EngineeringLtd.RDSTM剖分式機(jī)械密封Copyright1997A.E32Copyright1999A.E.S.EngineeringLtd.DMSFTM

雙端面整裝固定型集裝式機(jī)械密封

Copyright1999A.E.S.Engineer33

金屬波紋管系列密封Copyright2000A.E.S.EngineeringLtd.……...…….....IncreasesSealLife50%MoreBellows……………TM12

50%ExtraIndustryStandard金屬波紋管系列密封Copyright200034Copyright1997A.E.S.EngineeringLtd.PCPSTM腔式泵系列密封Copyright1997A.E.S.Engineer35Copyright1997A.E.S.EngineeringLtd.攪拌器系列密封

Copyright1997A.E.S.Engineer36FLOWFLOWDualSealSealReturnPipeSealFeedPipeVesselCopyright1997A.E.S.EngineeringLtd.密封輔助系統(tǒng)系列FLOWFLOWDualSealSealReturnP37非平衡型機(jī)械密封=壓力梯度力=壓強(qiáng)

X面積實(shí)例:密封腔壓強(qiáng)=100PSI密封面積=2sq...in閉合力=2sq...inX100PSI=200lbs張開力=2sq...inX50PSI=100lbs

200lbs-100lbs=100lbs閉合力Copyright1997A.E.S.EngineeringLtd.工藝介質(zhì)動(dòng)環(huán)靜環(huán)密封腔體軸非平衡型機(jī)械密封=壓力梯度力=壓強(qiáng)X面積實(shí)例:閉合力38平衡型密封=壓力梯度力=壓強(qiáng)

X面積實(shí)例:密封腔壓強(qiáng)=100PSI密封面積=1sq...in閉合力=1sqinX100PSI=100lbs張開力=2sq..inX50PSI=100lbs

100lbs-100lbs=0lbs閉合力Copyright1997A.E.S.EngineeringLtd.工藝介質(zhì)軸套動(dòng)環(huán)靜環(huán)密封腔體軸平衡型密封=壓力梯度力=壓強(qiáng)X面積實(shí)例:閉合力39為什么要采用平衡型機(jī)械密封密封的工藝介質(zhì)壓力較高減小PV值，降低端面比壓產(chǎn)生較少熱量減少端面磨損或變形減少轉(zhuǎn)矩真空密封降低軸功率損耗端面材質(zhì)選擇范圍廣Copyright1997A.E.S.EngineeringLtd.ASELECTIONOFAESSEAL’SFOLLOW為什么要采用平衡型機(jī)械密封密封的工藝介質(zhì)壓力較高Copyri40為什么要使用集裝式密封“集裝式機(jī)械密封已經(jīng)成為引導(dǎo)市場(chǎng)的潮流”安裝簡(jiǎn)便，無人為安裝誤差泄漏量極小

提高了使用可靠性

適合于多種型式的泵

降低維修率，使用壽命長(zhǎng)

增加了生產(chǎn)利潤(rùn)C(jī)opyright1997A.E.S.EngineeringLtd.特點(diǎn)：為什么要使用集裝式密封“集裝式機(jī)械密封已經(jīng)成為安裝簡(jiǎn)便，無41密封端面的材質(zhì)Copyright1997A.E.S.EngineeringLtd.GlassFilledTeflon（填充聚四氟乙烯）Carbon（碳石墨）StainlessSteel（不銹鋼）Ceramic（陶瓷）ChromeOxide（氧化鉻）Tungsten