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1、轴封加热器GlandHeater轴封加热器又叫汽封冷却器，它的作用是回收门杆漏汽和轴封漏汽，用加热凝结水以回收热量，并把不凝结性气体排入大气。为了形成一定的负压和排出不凝结气体，该冷却器设有轴加风机。如图6-4-1所示，汽封冷却器是一种在大气压力下运行的冷却面积小的热交换装置。本汽封冷却器为单流程、卧式、全流量表面式、带风机冷却器。Glandheater,alsoknownastheglandsteamcondenser,isintendedtorecyclevalvestemsteamleakageandglandsteamleakage.Ithe

2、atsupthecondensatetorecycletheheatanddischargethenon-condensablegasesintotheair.Thecondenserisprovidedwithafantoformcertainnegativepressureanddischargethenon-condensablegases.AsshowninFigure6-4-1,theglandsteamcondenserisaheatexchangedevicewhichrunsunderatmosphericpressureandreq

3、uiressmallcoolingarea.Theglandsteamcondenserisasingle-pass,horizontal,full-flowsurface-typecoolerwithafan.汽封冷却器由冷却器主体，前、后水室及抽风机等主要部件组成。进、出水室与它们各自的管板用螺栓连接，并且用密封垫片来封住漏汽和漏水。铜管在两端胀于管板上。同时配备两风机。1台运行，1台备用。排风机进口处装有蝶阀，它在一定范围内可以调节真空的高低。排风机壳体的疏水任何时候都应敞开排污，通过合适的密封弯头排出凝结水。Theglandsteamcond

4、enseriscomposedofthecoolerbody,thefrontandrearwaterchamber,theexhaustfan.Theinletandoutletwaterchambersareconnectedtotheirtubeplatewithboltsandsealedwithsealinggasketstopreventsteamandwaterleakage.Thecoppertubeisexpandedontothetubeplateatbothends.Twofansareprovided,oneforoperat

5、ionandtheotherforstandby.Abutterflyvalveismountedattheinletoftheexhaustfanandiscapableofadjustingthevacuumdegreewithinacertainrange.Drainoftheexhaustfanhousingshouldbeopenatanytimetodischargethesewage.Thecondensateshouldbedischargedthroughasuitablesealingelbow.汽封冷却器在启动时应先逐渐开启进水

6、阀，使冷却器水侧充满水，同时打开水室顶部的放气阀，放净前、后水室内的积存空气。运行时，应监视汽侧水位的变化，以防止由于流水不畅或钢管的泄漏而造成汽侧满水事故。Tostarttheglandsteamcondenser,theinletvalveshouldbeopenedfirstsothatthewatersideofthecondenserisfilledfullwithwater.Atthesametime,opentheairventvalveatthetopofthewaterchambertodischargetheairaccumula

7、tedinthefrontandrearwaterchambers.Inoperation,itisrequiredtomonitorchangesinthesteam-sidewaterleveltopreventfullwateraccidentonthesteamsideduetounsmoothdrainorstealpipeleakage.为了清洗或检查管子各端部，必须拆除两端水室。在汽封冷却器不使用时，建议将汽封冷却器管侧的水疏去并彻底干燥。Tocleanorinspectthetubeends,thewaterchamberatboth

8、endsmustberemoved.Whentheglandsteamcondenserisnotinuse