简介:摘要此论文重点研究如何提高兰州石化公司化肥厂动力车间2#汽轮机的发电量,我通过机组运行模式的改进、与设备、工艺的改善顺利提高了机组运行效率与机组利用率,最终达到了提高发电量的目的。
简介:Anultra-highspeed1:2demultiplexerforopticalfibercommunicationsystemsisdesignedutilizingtheIHP0.25μmSiGeBiCMOStechnology.Thelatchofthedemultiplexercorecircuitisresearched.Basedonthecurrentmeasurementcondition,ahigh-gainandwide-bandwidthclockbufferisdesignedtodrivelargeload.Transmissionlinetheoryforultra-highspeedcircuitsisusedtodesignmatchingnetworktosolvethematchingproblemamongtheinput,outputandinternalsignals.Thetransientanalysisshowsthatthisdemultiplexercandemultiplexone100Gb/sinputintotwo50Gb/soutputs.Thechipareaofitis0.7mm×0.47mm,theinputandoutputdataarebothat400mVP-PPCMLstandardvoltagelevel,andthepowerconsumptionoftheICis900mWatthepowersupplyof-4V.
简介:ThispaperpresentsacomparisonbetweentheChineseCodeGB50011-2001andtheInternationalStandardISO3010:2001(E),emphasizingthesimilaritiesanddifferencesrelatedtodesignrequirements,seismicactionsandanalyticalapproaches.Similaritiesinclude:earthquakereturnperiod,conceptualdesign,siteclassification,structuralstrengthandductilityrequirements,deformationlimits,responsespectra,seismicanalysisprocedures,isolationandenergydissipation,andnonstructuralelements.Differencesexistinthefollowingareas:seismiclevels,earthquakeloading,modedampingfactorsandstructuralcontrol.
简介:摘 要:CB251GB井组位于埕岛油田东部区块,是胜利油田埕岛东区产能建设项目地重点井组,目的开发馆陶组油藏。埕岛东区上部地层疏松、成岩性差,易发生缩径、垮塌,砂岩地层、断层及不整合面附近,易发生井漏。明化镇组、馆上段存在气层,井控风险高。CB251GB井组为大斜度密集丛式井组,与同台井和邻近老井有极高的交碰风险,井斜大、位移大、裸眼段长,导致摩阻扭矩高,井眼清洁、井眼轨迹控制难度大。本文针对CB251GB井组的钻井工程难点进行了密集丛式井组优快钻井技术应用,包括钻井工程设计优化、钻头优选、提速工具优选、BHA优化设计、密集丛式井防碰技术应用、井眼清洁工具优配套,获得了良好的应用效果。