產(chǎn)品詳情
世界各國(guó)在有關(guān)壓力容器的技術(shù)規(guī)范中,密封計(jì)算都?xì)w屬于法蘭設(shè)計(jì)或法蘭螺栓連接部分,而且都以法蘭、螺栓的受力分析和計(jì)算為主要內(nèi)容。這里不重復(fù)有關(guān)法蘭的計(jì)算,重點(diǎn)介紹墊片計(jì)算與密封性能的校核。華特斯計(jì)算法目前,我國(guó)的《鋼制石油化工壓力容器設(shè)計(jì)規(guī)定》與英國(guó)、日本有關(guān)壓力容器規(guī)范一樣,基本是沿用美國(guó)《ASME》規(guī)范,法蘭和密封的設(shè)計(jì)采用華斯特法。這種方法在密封性能的計(jì)算方面強(qiáng)調(diào)螺栓的強(qiáng)度,華斯特認(rèn)為:在各種情況下,只要螺栓強(qiáng)度足夠,作用在墊片上的螺栓力不小于設(shè)計(jì)值,即能保證墊片和密封面的緊密連接。在操作情況下所需的螺栓載荷Fm1(N)和在預(yù)緊螺栓時(shí)所需的螺栓載荷Fm2(N)2.墊片計(jì)算密封寬度墊片計(jì)算密封寬度b可如下確定:當(dāng)bo≤.64m時(shí),b=bo,從表3-5可見(jiàn),墊片的有效密封寬度bo不等于墊片與壓緊面的實(shí)際接觸寬度N。此因墊圈置于螺栓孔內(nèi)側(cè)時(shí),螺栓力使法蘭產(chǎn)生一定程度的偏轉(zhuǎn)。內(nèi)壓建立后,介質(zhì)壓力產(chǎn)生的軸向力加劇偏轉(zhuǎn)。壓緊力并不是均勻分布在整個(gè)接觸面上,二是外緣緊、內(nèi)緣松,介質(zhì)可能滲透到墊圈的某一寬度,而且墊片寬度愈大,這種現(xiàn)象愈嚴(yán)重,所以計(jì)算寬度b≤bo,DG的計(jì)算方法也隨bo變化。螺栓總截面積的計(jì)算西德DIN255法西德標(biāo)準(zhǔn)DIN255“法蘭連接計(jì)算”中,墊片計(jì)算部分與我國(guó)現(xiàn)行規(guī)范有所不同,其步驟分為下列幾個(gè):計(jì)算結(jié)束后,還需作受力圖。將升壓升溫過(guò)程中法蘭、螺栓、墊片變形量算出并反映在一張圖上,以便了解在操作情況下,是否因過(guò)度松弛,需要在預(yù)緊時(shí)采用更高的螺栓力或另選墊片。系數(shù)法國(guó)內(nèi)有關(guān)單位在探討墊片密封性能設(shè)計(jì)方法時(shí)曾作過(guò)大量工作?,F(xiàn)將該計(jì)算方法作一簡(jiǎn)介。對(duì)三種計(jì)算方法的討論《ASME規(guī)范》作為美國(guó)的標(biāo)準(zhǔn),在世界上影響很大。
有時(shí)候,你懷疑的,你疑問(wèn)的,你不相信的,
就在你交流的時(shí)候一一解決了 !
苦苦的尋找,甜甜的收獲!
福建鴻飛達(dá)給你解答你想知道的,拿起電話(huà)聯(lián)系我們吧!
福建鴻飛達(dá),讓你更貼近!
專(zhuān)業(yè)從事全球各類(lèi)工業(yè)自動(dòng)化產(chǎn)品及技術(shù)進(jìn)出口,長(zhǎng)年與歐美,北美等全球知名工業(yè)廠(chǎng)商建立起穩(wěn)定的合作關(guān)系,產(chǎn)品直接國(guó)外進(jìn)口,省掉中間環(huán)節(jié),為廣大企業(yè)用戶(hù)節(jié)約開(kāi)支!目前公司業(yè)務(wù)遍布全國(guó)各省市,經(jīng)過(guò)多年的服務(wù),總結(jié)出專(zhuān)為系統(tǒng)用戶(hù)服務(wù)的成熟模式,實(shí)現(xiàn)服務(wù)的人性化、流程的簡(jiǎn)單化以及管理的規(guī)范化,有效幫助客戶(hù)延長(zhǎng)電氣設(shè)備的使用周期,降低運(yùn)營(yíng)成本,控制停產(chǎn)風(fēng)險(xiǎn)、提高生產(chǎn)效率!
FOXBORO E11GM-HSAA1 (Used, Cleaned, Tested 2 year warranty)
FOXBORO DM400YL (Surplus New not in factory packaging)
FOXBORO 760RNB-3A6T (Used, Cleaned, Tested 2 year warranty)
FOXBORO I/A SER. NETWORK INTERFACE CONTROL HUB P0972QM-0B
FOXBORO / BELLOFRAM 221-961-057-000 PRESSURE REGULATOR 221961057000
FOXBORO 762CNA-AT (Used, Cleaned, Tested 2 year warranty)
FOXBORO E83S-02TI (Used, Cleaned, Tested 2 year warranty)
FOXBORO I/A IPS MAGEXPERT MAGNETIC FLOW TRANSMITTER IMT96-PEADB10N NIB
FOXBORO 136-7-31 (Used, Cleaned, Tested 2 year warranty)
FOXBORO 1 1/2-81AF5C1 FLOW METER *NEW NO BOX*
FOXBORO P0922VT (Used, Cleaned, Tested 2 year warranty)
FOXBORO 2AX-SSL (Surplus New In factory packaging)
FOXBORO IDP10 TRANSMITTER IDP10-T22DO3F-M2D5
FOXBORO PB-BA (Surplus New In factory packaging)
FOXBORO A2048SU (Used, Cleaned, Tested 2 year warranty)
FOXBORO E11DM (Used, Cleaned, Tested 2 year warranty)
FOXBORO L0118UH (Used, Cleaned, Tested 2 year warranty)
FOXBORO 800HA-WCR-PJGFGZ-A NEMA 4X
FOXBORO E13DL-IKAL2 (Surplus New In factory packaging)
FOXBORO PH TRANSMITTER W/ PH/ORP SENSOR 870ITCR-FXFNZ-7 105450
FOXBORO CIRCUIT BOARD 2DC-J 103275
FOXBORO B0134ZR (Used, Cleaned, Tested 2 year warranty)
FOXBORO 118V 30VA 3/8A M/62H CONTROLLER 62H-4E-OJ *PZB*
Foxboro P0916NM-0C FBM242 PLC Module w/ Base w/ 60 day warranty
FOXBORO P0912MJ (Used, Cleaned, Tested 2 year warranty)
FOXBORO I/A SERIES CONTROL PROCESSOR MODULE REV-0K P0400VR
FOXBORO B0133SA (Used, Cleaned, Tested 2 year warranty)
V18311H-112110100
V18311H-182110100
V18311H-382110100
V18311H-48211010
V18345-1010160001
V18345-1010221001
V18345-1010251001
V18345-1010421001
V18345-1010521001
V18345-1010550001
V18345-1020520001
V18345-1021120001
V18345-1021420001
V18345-1010121001
V18345-1010120001
V18345-1020121001
V18345-1004210001
V18345-1011220001
V18345-1010561001
V18345-1011121001
V18345-2010421001
V18345-2010521001
V18345-2010521501
V18345-2011150001
V18348-10111300110
V18348-10111310110
V18348-10113300110
V18348-10113310110
V18348-10111200110
V18348-10111210110
V18348-10114300110
V18348-10114310110
V18345-1010121001
Ovation 1D54582G06
Ovation 1P00028G01
Ovation 1X00024H01
Ovation 1X00093G05
Ovation 1X00093G06
Ovation 1X00093G07
Ovation 1X00093G10
Ovation 1X00093H08
Ovation 1X00093H09
Ovation 1X00095H01
Ovation 1X00097H01
Ovation 1X00102H01
Ovation 1X00107H01
Ovation 1X00126H02
Ovation 1X00133H01
Ovation 1X00161H01
Ovation 1X00163H01
Ovation 1X00163H02
Ovation 1X00163H03
Ovation 1X00185H01
Ovation 1X00416H01
Ovation 1X00417H02
Ovation 1X00417H03
Ovation 1X00417H04
Ovation 1X00474G01
Ovation 1X00474G02
Ovation 1X00480G01
Ovation 2000A04G01
Ovation 2380C91G03
聯(lián)系人:小葉
公司名稱(chēng):福建鴻飛達(dá)自動(dòng)化科技有限公司
公司地址:福州市閩侯高新區(qū)正榮財(cái)富中心(SOHOB座8層)
您心動(dòng)了嗎?還不趕緊拿起電話(huà)撥打我們的熱線(xiàn)!