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1、电站机组高压加热器High-pressureHeaterofAdipalaPowerPlantUnit高加的作用是用汽轮机的抽汽来加热锅炉给水，以提高机组的热效率。高压加热器按安置形式可分为：倒置立式、顺置立式和卧式三大类。本工程高压给水加热器为卧式、U形管、双流程，水室采用自密封结构，共有三台，位于给水泵出口，承受给水压力，所以称为高压加热器。Thehigh-pressureheaterisintendedtoheatuptheboilerfeedwaterbyusingtheturbineextracti

2、onsoastoimprovethethermalefficiencyoftheunit.Thehigh-pressureheatercanbedividedintothreetypesaccordingtotheformofplacement,i.e.invertedverticaltype,cis-setverticaltypeandhorizontaltype.Thehigh-pressureheaterusedinthisprojectisahorizontaltypeofU-shapedtubean

3、ddoublepasses.Thewaterchamberisofaself-sealingstructure.Atotalofthreeareestablishedattheoutletofthefeedpumptowithstandthefeedwaterpressure,thuscalledthehigh-pressureheater.一、高加技术参数I.TechnicalParametersofHigh-pressureHeater1.设备规范表6-2-1（加热器的编号按汽机抽汽压力由高到低排列）：1

4、.Devicespecifications(Table6-2-1)(theheaternumberisindescendingorderaccordingtotheturbineextractionpressure):序号项目#8高加#7高加#6高加1压力降管侧压力降（MPa）0.090.10.07壳体压力降（MPa）0.040.0660.04壳体每段(蒸汽冷却段、凝结段、疏水冷却段)压力降（MPa）0.033/0/0.0070.034/0/0.0320.01/0/0.032设计管内流速（m/s）2.12.2

5、2.3管内最大流速（m/s）2.42.42.43有效表面积（m2）249024601520每段(蒸汽冷却段、凝结段、疏水冷却段)有效表面积（m2）231/2150.8/108.2202/1980/278129.8/1102.5/287.74换热率（kJ/hr.℃.m2）5总换热系数(kJ/hr.℃.m2)3051/14350/80282993/14324/97651758/14280/100846给水端差（℃）-1.7007疏水端差（℃）5.65.65.68加热器壳侧设计压力（MPa）7.35.52.4设计温

6、度（℃）385/290350/270480/230试验压力（MPa）11.08.253.6壳侧压力降（MPa）9加热器管侧设计压力（MPa）373737设计温度（℃）290270230试验压力（MPa）55.555.555.5管侧压力降（MPa）10净重(kg)12746410830076944壳体净重(kg)286502833110100管束与管板净重(kg)733107054053550运行荷重(kg)13563611632883632充水荷重(kg)1482001323959111711疏水调节阀口径m

7、m待定待定待定设计温度/压力（℃/MPa）290/7.3270/5.5230/2.412危急疏水调节阀口径mm待定待定待定设计温度/压力（℃/MPa）290/7.3270/5.5230/2.4表6-2-1Table6-2-1No.Item#8High-pressureHeater#7High-pressureHeater#6High-pressureHeater1PressuredropPipe-sidepressuredrop(MPa)0.090.10.07Housingpressuredrop(MPa)0

8、.040.0660.04Pressuredrop(MPa)ateachsectionofhousing(steamcoolingsection,condensingsection,draincoolingsection)0.033/0/0.0070.034/0/0.0320.01/0/0.032Designflowrateinpipe(m/s)2.12.22.3Max.flowrateinpipe(