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US 8,237,303B2 12 ORGANIC RANKINE CYCLE (ORC) TURBO GENERATOR FOR PREVENTION OF PENETRATION OF WORKING FLUID CROSS-REFERENCE TO RELATED APPLICATIONS Thisapplicationclaimsthebene?tofKoreanPatentAppli cation No. 10-2009-0088177, ?led on Sep. 17, 2009 in the Korean Intellectual Property O?ice, Which is incorporated hereinbyreferenceinitsentirety. BACKGROUND OF THE INVENTION (a)FieldoftheInvention The present invention relates to an organic rankine cycle (ORC) turbogeneratorforpreventionofpenetrationofa Working ?uid, Which can block penetration of the Working ?uid from a turbine into a generator, thereby improving the e?iciencyofpoWergeneration. (b)BackgroundoftheRelatedArt In general, an organic rankine cycle (ORC) is a rankine cycle Which uses an organic medium as a Working ?uid. The organicrankinecycle(ORC) systemisasystemWhichrecov ers heat from heat sources in a loW-temperature range of 60 to 2000C.toproduceelectricity.TheORC systememploys,as the Working ?uid, a Freon-based refrigerant Which has a loW boiling point and a high evaporation pressure in vieW of the characteristicsoftheORC systemWhichrequiresproduction of high-pressure gas at loW temperature to drive a turbine. 20 25 30 astoinjecttheWorking?uidtotheturbineblade;agenerator includingageneratorhousingconnectedtotheturbinehous ing,arotorrotatablymountedinsidethegeneratorhousing and a rotary shaft mounted to the turbine blade, and a ?rst bearingandasecondbearingmountedatthefrontandrear ends of the rotor so as to support the rotation of the rotary shaft; and Working ?uid penetration-preventing means mounted aroundtherotaryshaftinfrontofthe?rstbearing and adapted to block the pressure generated from the turbine so as to prevent the Working ?uid injected from the ?uid injectionnoZZlefrombeingpenetratedintothegenerator. BRIEF DESCRIPTION OF THE DRAWINGS Theaboveandotherobjects,featuresandadvantagesofthe presentinventionWillbeapparentfromthefolloWingdetailed descriptionofthepreferredembodimentsoftheinventionin conjunctionWiththeaccompanyingdraWings,inWhich: FIG. 1 is a cross-sectional vieW illustrating the inner con struction of an organic rankine cycle (ORC) turbo generator forpreventionofpenetrationofaWorking?uidaccordingto a preferred embodiment of the present invention; FIG. 2 is a perspective vieW illustrating a main element of FIG. 1; and FIG. 3 is a perspective vieW illustrating the main elements ofthepresentinvention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, a preferred embodiment of the present inven tion Will be described in further detail With reference to the accompanying draWings. FIG. 1 is a cross-sectional vieW illustrating the inner con structionofanorganicrankinecycle(ORC)turbogenerator forpreventionofpenetrationofaWorking?uidaccordingto a preferred embodiment of the present invention, FIG. 2 is a perspective vieW illustrating a main element of FIG. 1, and FIG. 3 is a perspective vieW illustrating the main elements of thepresentinvention. AsshoWninFIGS.1to3,theorganicrankinecycle(ORC) turbo generator for prevention of penetration of a Working ?uid according to the present invention includes: a turbine 10 including a turbine housing 11, a turbine blade 13 rotatably mountedinsidetheturbinehousing11,a?uidinjection In this case; the Freon-based refrigerant used as the Work ing ?uid possesses the characteristics of dissolving a rubri cating oil. Even though a seal is installed betWeen the gen erator and the turbine, a high-pressure Working ?uid introducedintotheturbinetodrivetheturbineispenetratedin35 a certain amount into the generator due to a difference in pressure betWeen the turbine and the generator to dissolve a bearinglubricant,therebydeterioratingthedrivingperfor mance ofthegenerator. 40 SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems occurring in the prior art, and it is an objectofthepresentinventiontoprovideanorganicrankine45 cycle(ORC)turbogeneratorforpreventionofpenetrationof noZZle15mountedinsidetheturbinehousing11soasto a Working ?uid, Which can block penetration of the Working ?uid from a turbine into a generator, thereby improving the e?iciencyofpoWergeneration. injecttheWorking?uidtotheturbineblade13;agenerator30 including a generator housing 31 connected to the turbine housing11,arotor33rotatablymountedinsidethegenerator housing31andarotaryshaft35mountedtotheturbineblade 13,anda?rstbearing37andasecondbearingmountedatthe front and rear ends of the rotor 33, respectively, so as to support the rotation of the rotary shaft 35; and Working ?uid penetration-preventing means 50 mounted around the rotary shaft35infrontofthe?rstbearing37andadaptedtoblockthe pressure generated from the turbine 10 so as to prevent the Working?uidinjectedfromthe?uidinjectionnoZZle15from being penetrated into the generator 30. Here, the turbine blade 13 rotates at a high speed of more than10,000rpmsothatWhentherotor33mountedaroundthe rotaryshaft35isrotated,thegenerator30produceelectricity. The e?iciency of poWer generation is approximately 70%, Whichisthehighestinanelectricgenerationexpansionsys tem.A stator(notshoWn)correspondingtotherotor33is providedattheoutsideoftherotor33. Anotherobjectofthepresentinventionistoprovidean 50 organic rankine cycle (ORC) turbo generator for prevention ofpenetrationofaWorking?uid,Whichcanblockpenetration of the Working ?uid from a turbine into a generator While reducingafrictionalforcegeneratedWhenblockingthepen etrationoftheWorking?uid. Yetanotherofthepresentinventionistoprovideanorganic rankine cycle (ORC) turbo generator for prevention of pen etration of a Working ?uid, in Which cooled air is supplied to a structure ofblocking penetration ofthe Working ?uid from aturbineintoagenerator,therebyfacilitatingtheblockingof 60 thepenetrationoftheWorking?uid. 55 To achieve the above objects, the present invention pro videsanorganicrankinecycle(ORC) turbogeneratorfor prevention of penetration of a Working ?uid, the turbo gen eratorincluding:aturbineincludingaturbinehousing,a65 turbinebladerotatablymountedinsidetheturbinehousing,a Inthiscase,WhentheWorking?uidinjectedfromthe?uid ?uid injection noZZle mounted inside the turbine housing so injection noZZle 15 is injected to the outer surface of thePDF Image | ORGANIC RANKINE CYCLE (ORC) TURBO GENERATOR
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