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    • 5. 发明申请
    • HEAT SHIELD ELEMENT, GAS TURBINE
    • 热风元件,气体涡轮
    • WO2013011126A2
    • 2013-01-24
    • PCT/EP2012/064286
    • 2012-07-20
    • SIEMENS AKTIENGESELLSCHAFTSZIJARTO, JanosGRANBERG, PerUTRIAINEN, Esa
    • SZIJARTO, JanosGRANBERG, PerUTRIAINEN, Esa
    • F01D11/08F01D25/14
    • F01D11/08F05C2201/0463F05C2201/0466F05D2230/13F05D2230/22F05D2240/11F05D2250/185F05D2250/25F05D2260/221
    • The invention relates to a heat shield element (HS) for a gas turbine (GT) comprising an areal wall section (WS), which extends with regard to a central axis (CA) in an axial direction and a circumferential direction (CD), said wall section (WS) being defined by limiting edges of the heat shield element (HS), said wall section (WS) is of a defined thickness (TH), said thickness depending on the axial and circumferential position extending radially from an inner surface (IS) to an outer surface (OS) said inner surface (IS) is exposed to a hot gas path (HGP) and said outer surface (OS) is exposed to a coolant (CO) contained in a cavity (CV), wherein the heat shield element (HS) is provided with mounting elements (ME) suitable for mounting on a supporting structure (SP). To improve cooling efficiency it is proposed that cooling channels (CC) are provided through the wall of said wall section (WS) said cooling channels (CC) comprising a first section (S1) starting at the inner surface (IS), further comprising a second section (S2) extending between the inner surface (IS) and the outer surface (OS) along a length of at least three times the thickness (TH) of the wall section (WS) at that specific area of the second section and comprising a third section (S3) joining the hot gas path through the inner surface (IS) or through a limiting edge so that said cooling channels (CC) connect said cavity (CV) with the hot gas path (HGP).
    • 本发明涉及一种用于燃气轮机(GT)的隔热元件(HS),其包括相对于中心轴线(CA)在轴向和圆周方向(CD)上延伸的面壁部分(WS) 所述壁部分(WS)由所述隔热元件(HS)的限制边限定,所述壁部分(WS)具有限定的厚度(TH),所述厚度取决于从内表面径向延伸的轴向和周向位置 (IS)到外表面(OS),所述内表面(IS)暴露于热气路径(HGP),并且所述外表面(OS)暴露于包含在空腔(CV)中的冷却剂(CO),其中 隔热元件(HS)设置有适于安装在支撑结构(SP)上的安装元件(ME)。 为了提高冷却效率,提出通过所述壁部(WS)的壁提供冷却通道(CC),所述冷却通道(CC)包括从内表面(IS)开始的第一部分(S1),还包括 所述第二部分(S2)在所述第二部分的所述特定区域处沿所述壁部分(WS)的厚度(TH)的至少三倍的长度在所述内表面(IS)和所述外表面(OS)之间延伸,并且包括 第三部分(S3),其通过内表面(IS)或通过限制边缘接合热气路径,使得所述冷却通道(CC)将所述空腔(CV)与热气路径(HGP)连接。