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简介:摘要:在石油炼油化工企业中,一些长期运行的大型储罐扮演着至关重要的角色。然而,由于介质的腐蚀、压力和温度的波动以及基础沉降不均等因素的影响,罐底可能会出现减薄、焊缝开裂等问题。这些问题的发生不仅会对储罐的安全性和稳定性构成威胁,还可能导致储罐泄漏,进而引发更严重的安全事故和环境污染。
简介:神祈下的爱琴海波光粼粼。希腊第一大港比雷埃夫斯港(以下简称“比港”),货如轮转。2018年2月26日,中远海运比雷埃夫斯集装箱码头(COSCOSHIPPINGPiraeusContainerTerminal,以下简称“PCT”)开启第三个2万标准箱级集装箱泊位运营,同步迎来“中远海运金牛座”(COSCOSHIPPINGTAURUS)集装箱船首航,这也是希腊航运史上第一次迎来20000TEU+超大型集装箱船舶进港作业。比港“20000TEU+”新时代就此开启。PCT码头是中远海运第一个全资拥有的海外码头。2008年11月,中远海运旗下码头投资运营平台中远海运
简介:最近,建设部试点项目大连锦绣园采用的一种HT-800双组分墙体保温材料,经1年跟踪监测后,证明该材料施工方便,与保温板材相比,减少裁剪、拼装、粘接、嵌缝等工艺,节省施工费用,压缩工期;成型后不空鼓、裂纹、脱落;使用时,冬不结露、返凉,夏不返热;业主入住后进行装修时,也不会损坏墙体保温效果。
简介:Characteristicsofiontemperaturemeasuredwithcharge-exchangerecombinationspectroscopy(CXRS)werestudiedinOhmic,lower-hybrid-wave(LHW)drivenandion-cyclotron-resonance-frequency(ICRF)heatedplasmasinHT-7.TheresultsindicatethatthecentraliontemperatureTi0followstheone-thirdpowerlawintheproductofcentralline-averageddensityneandplasmacurrentIpinOhmicdischargesandisthereforeconsistentwiththeArtsimovichscalinglawTi0=K·(Ip·Bt·ne·R2)1/3.ItisshownthatthereisanappreciableincreaseofiontemperatureduringtheoperationwithbothLHWandICRFandthattheincrementofiontemperatureinthoseshotsismainlyduetotheenergytransferviacollisionsbetweenionsandelectronsratherthatbydirectheatingoftheions.
简介:SawtoothcontrolexperimentswereperformedonHT-7withalimiterconfigurationandontheExperimentalAdvancedSuperconductingTokamak(EAST)withadoublenullcon-figuration.Thesawtoothperiodcanbemodifiedbylowerhybridwave(LHW)andioncyclotronresonancefrequency(ICRF).Differentsawtoothbehaviorwasobservedwiththesameplasmadensity,LHWpowerbutdifferentplasmacurrentsonHT-7.TherewasadwelltimebetweenLHWaddedandthesawtoothstabilizationonHT-7whilethesawtoothstabilizationimmediatelyhappenedwhenLHWpowerwasinjectedonEAST.Thepossiblemechanismofthesawtoothcontrolisdiscussedinthispaper.Alltheexperimentalresultshaveprovedthatpowerdepositionoftheradiofrequency(RF)shouldbethekeyfactorforsawtoothcontrol.