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1、凝結(jié)水過冷度產(chǎn)生的原因分析摘要:本文從各個方面分析了凝結(jié)水過冷度產(chǎn)生的原因及其對機(jī)組運(yùn)行經(jīng)濟(jì)性、安全性的影響,從凝汽器的設(shè)計(jì)、改造、檢修以及運(yùn)行維護(hù)幾個方面,提出了減小凝結(jié)水過冷度的對策,從而提高機(jī)組運(yùn)行的經(jīng)濟(jì)性和安全性。Abstract:thispaperanalyzedfromvariousaspectsthecausesofthecondensatesupercoolingdegreeanditsimpactonunitoperationefficiency,safety,fromthedesignofthecondenser,mo

2、dification,overhaulandoperationmaintenanceaspects,andputsforwardthemeasurestoreducethecondensatesupercoolingdegree,soastoimprovetheeconomicbenefitofunitoperationandsafety.關(guān)鍵詞:凝汽器;過冷度;經(jīng)濟(jì)性;安全性Keywords:thecondenser;Supercoolingdegree;Economy;security　　　　1、引言1,theintroduction

3、　　　　凝汽器是凝汽式汽輪機(jī)的主要輔助設(shè)備,是汽輪機(jī)組系統(tǒng)的重要組成部分,它工作性能的好壞直接影響著整個機(jī)組的熱經(jīng)濟(jì)性和安全性。而凝汽器運(yùn)行狀態(tài)的優(yōu)劣集中表現(xiàn)在以下三個方面:是否保持在最佳真空、凝結(jié)水的過冷度是否最小以及凝結(jié)水的品質(zhì)是否合格。其中凝結(jié)水的過冷度越大,說明被冷卻水帶走損失的熱量越多,而這部分熱損失要靠鍋爐多燃燒燃料來彌補(bǔ),從而導(dǎo)致整個熱力系統(tǒng)熱經(jīng)濟(jì)性降低。而且過冷度越大,凝結(jié)水中的含氧量也越多,從而加速了相關(guān)管道、設(shè)備的腐蝕速度。因此需從各個方面對凝汽水過冷度加以重視并采取措施使其減到最小,以此來提高機(jī)組運(yùn)行的經(jīng)濟(jì)性和安全性

4、。Condenserisamainauxiliaryequipmentofcondensingsteamturbine,steamturbineunitsystemisanimportantpartofitsworkperformanceisgoodorbaddirectlyaffectsthethermalefficiencyoftheentireunit,andsecurity.Andadvantagesanddisadvantagesofthecondenserrunningstatusinthefollowingthreeaspe

5、cts:whethertomaintainthebestvacuum,minimumofcondensatesupercoolingdegreeandwaterqualityisqualified.Ofcondensatesupercoolingdegree,thegreatertheinstructionswastakenawaybycoolingwaterthemoreheatloss,andthispartoftheheatlosswilldependontheboilerburningmorefueltomakeupfor,res

6、ultinginreducedthewholethermalsystemthermalefficiency.Andthegreaterthedegreeofsupercooling,is,themoreoxygenincondensate,whichacceleratedthecorrosionrateofrelatedpipingandequipment.Thereforeneedfromallaspectsonthesodasupercoolingdegreeofattentionandtakemeasurestominimizeth

7、emakeit,inordertoimprovetheeconomicbenefitofunitoperationandsafety.　　　　2、凝結(jié)水過冷度的定義和表示方法2,thedefinitionofcondensatesupercoolingdegreeandthesaidmethod　　　　2.1定義2.1definitions　　凝結(jié)水過冷度表征了凝汽器熱水井中凝結(jié)水的過度冷卻程度,凝汽器熱水井出口凝結(jié)水溫度與凝汽器在排汽壓力下對應(yīng)的飽和溫度之差即稱為過冷度。Condensatesupercoolingdegreeofcha

8、racterizationoftheovercoolingofthecondensateinthecondenserhotwell,thecondenserhotwellexportwater