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US 2013/0142638A1 Jun.6,2013 bladesarearrayedinmultistagemanner.Thesteamtohave been decompressed and to have expanded in the steam pas sage to the radial out?ow becomes faster and gives the rotat ing motion energy to the rotor blades. However, the rapid expansion of the steam occurrs, the volume of the operating steam is expanded rapidly, it is dif?cult for steam to run through the gap betWeen the rotor blades and the stator blades.As aresult,the steam How may be blocked and stuffed, so the speed ofthe steam How may be decreased. [0015] Itisanobjectofthepresentinventiontoprovidea high ef?ciency radial ?oW steam turbine by simplifying the steam supply method and supplying a suf?cient amount of steam in the multiplied turbine unit installed on the rotation shaft. Means forSolvingtheProblems [0016] Inordertoachievetheabove-mentionedobject,the presentinventionofaradial?oW steamturbinecomprises;a rotation shaft; a rotor disk connected to the rotation shaft; rotor blades mounted on the rotor disk; a stator disk facing to the rotor disk ?xed and supported by a casing; stator blades mounted on the stator disk; Wherein the rotor blades mounted on the rotor disk and the stator blades mounted on the stator diskarearrayedalternatelyintheradialdirection;anoperat ing steam ?oW passage in Which the operating steam ?oWs from in the vicinity of the rotation shaft to the out?oW radial direction, Wherein a steam supplied from the steam supply source?oWs tothesteam?oW passageasanoperatingsteam forrotatingtherotordiskandtherotationshaft;andasteam supplyroutealongtotheaxialdirectionisformedandsecured byformingathroughopeningontherotordiskinthevicinity oftherotationshaft. [0017] Accordingtotheabove-mentionedcon?guration, the radial ?oW steam turbine can improve the steam supply that Was dif?cult in the prior art, and su?icient amount of the steamcanbesuppliedtoeveryturbineunitarrayedintheaxial direction. [0018] Itispreferablethatthesetoftherotordiskandthe stator disk is provided for at least one unit. Therefore, the number of the rotor disk is at least one, the rotor blades are mounted on the both sides of each rotor disk respectively, and the stator disks face to both sides of each rotor disk respec tively. The operating steam ?oW passages are formed to be at leasttWo,andthesteamisledfromthesteamsupplysourceto eachoperatingsteam?oW passageviathesteamsupplyroute. [0019] Thecombinationoftheshapeoftherotordiskand theshapeofthethroughopeninginthevicinityoftherotation shaft of the rotor disk are as folloWs. [0020] The?rstcombinationisthattherotordiskis installedontherotationshaftdirectly,andthethroughopen ing of the rotor disk is through hole in the vicinity of the rotationshaftoftherotordisk. [0021] Thesecondcombinationisthattherotordiskisa doughnut-shape holloW circular disk having a center hole largerthanthediameteroftherotationshaft,Whereintherotor disk is supported by the plural rotor disk supporters ?xed to therotationshaft,andthethroughopeningoftherotordiskin thevicinityoftherotationshaftoftherotordiskistheinter gap betWeen the rotor disk supporters. [0022] Inthosecombinations,ifthestatordiskis?xedto the casing by securing the gap betWeen stator disk edge and therotationshaft,thegapbetWeenthestatordiskedgeandthe rotation shaft forms a part of the steam supply route. [0023] Itispreferablethattherotorbladesmountedonthe rotor disk and the stator blades mounted on the stator disk are formed outside ofthe steam supply route. Because as a part of thesteamsupplyroute,thethroughopeningisformedinthe vicinity of the rotation shaft in the rotor disk, and the gap betWeen the stator disk edge and the rotation shaft is formed inthevicinityoftherotationshaft.Thereforetherotorblades and the stator blades do not cover this area and secure the throughopening. [0024] Itispreferablethatthesteamsupplydirectionsfrom thesteamsupplysourcetotheoperatingsteam?oW passage via the steam supply route are tWo directions, the one is the direction from the one terminal of the rotation shaft, and the other is the direction from the other terminal of the rotation shaft. [0025] Next,iftherearepluralsetsoftherotordiskand statordiskalongtheaxialdirection,itispreferablethatthe operatingsteampressureadjustingthroughholesforadjust ing the airpressure gap among the steam ?oW passages by connecting through the operating steam ?oW passages are formed appropriately on the rotor disk and the stator disk besides the steam supply route. [0026] Accordingtotheabove-mentionedcon?guration,if theradial?oW steamturbineemployspluralsetsoftherotor disk and stator disk along to the axial direction, the air pres sure difference can be adjusted among the steam supply routes,andtheoperationoftheradial?oW steamturbineWill be stable. [0027] Next,thestagenumberoftherotorbladesandstator blades in the radial ?oW steam turbine can be adjusted. A stage of the rotor blades comprises the rotor blades arrayed annularly on concentric paths, and the multi-stage rotor blades comprises plural stages mounted on the rotor disk along the radial direction. The stator blades are mounted on the stator disk corresponding to the rotor blades on the rotor disk. Effect of the Present Invention [0028] Intheconventionalradial?oWsteamturbineinthe prior art, the output can be increased only by the method in Whichthenumberofthestagesinthemulti-stageoftherotor blades is increased because there is only one rotor disk on the rotation shaft, but this method requires very high skill and highcost.Iftheconventionalradial?oW steamturbineinthe prior art employs the rotor blades on both sides of the rotor diskandpluralrotordiskareaddedtotherotaryaxialdiskin order to form the plural steam passages in the radial out?oW direction,theonlymethodforsupplyingthesteamintheprior art is limited to the method forming the steam passage in the rotation shaft. Therefore, the steam Will be supplied through the rotating rotation shaft, and a su?icient amount of steam cannot be supplied. The conventional radial ?oW steam tur bineisnotinactualuse.On thecontrary,theradial?oW steam turbineinthepresentinventioncanemploythepluralsetsof the turbine units including the rotor disk and the stator disk installed on the rotation shaft, and the steam can be supplied to every turbine unit via the through opening formed in the vicinity of the rotation shaft. In result, a su?icient amount of the steam can be supplied to every steam passage. [0029] Theradial?oWsteamturbineofthepresentinven tioncanaddanarbitrarynumberoftheturbineunitincluding the rotor disk and the stator disk onto the rotation shaft according to the steam supply ability and condition. There fore,theradial?oW steamturbineofthepresentinventioncanPDF Image | RADIAL FLOW STEAM TURBINE
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