本发明涉及一种涡轮机毂,该涡轮机毂旨在被安装成能够围绕涡轮机的纵向轴线(X)旋转,该毂包括主体(1)以及多个平台(3),主体围绕纵向轴线(X)布置,主体的外表面具有多个凹槽,多个平台包括由具有半径r的圆形外边缘界定的外表面,每个平台(3)被布置在主体(1)的多个凹槽中的对应的凹槽中,并且旨在接纳桨距可变的叶片(2),桨距可变的叶片的桨距能根据桨距改变轴线(Z)变化,平台(3)以桨距改变轴线(Z)为中心并且能围绕桨距改变轴线旋转;其特征在于,对于每个平台,毂的主体(1)和平台(3)的外表面的至少一部分包括由具有半径R和中心C的相同的球形部分限定的曲率,至少一部分在毂的主体(1)和平台(3)之间的联接区域中位于平台(3)的外边缘处,球形部的中心C位于桨距改变轴线(Z)上、在平台(3)的外表面和纵向轴线(X)之间界定的半球形区域的外侧。

    The present invention concerns a turbomachine hub, intended to be mounted so as to be able to rotate about a longitudinal axis (X) of the turbomachine, the hub comprising a main body (1) arranged around the longitudinal axis (X), an outer surface of which has a plurality of recesses; a plurality of platforms (3) comprising an outer surface delimited by a circular outer edge of radius r, each platform (3) being arranged in a corresponding recess of the plurality of recesses of the main body (1), and intended to receive a variable pitch blade (2), the pitch of which is variable according to a pitch change axis (Z), the platform (3) being centred and able to rotate about the pitch change axis (Z); characterised in that, for each platform, at least one part of the outer surface of the platform (3) and the main body (1) of the hub comprises a curvature defined by a same sphere portion of radius R and centre C, the at least one part being situated at the outer edge of the platform (3), in a junction zone between the platform (3) and the main body of the hub (1), the centre C of the sphere being situated on the pitch change axis (Z) outside a hemispherical zone delimited between the longitudinal axis (X) and the outer surface of the platform (3).


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    Titel :

    用于桨距可变的叶片的涡轮机多球形毂


    Erscheinungsdatum :

    2024-05-07


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    F01D Strömungsmaschinen [Kraft- und Arbeitsmaschinen oder Kraftmaschinen], z.B. Dampfturbinen , NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES / B64C AEROPLANES , Flugzeuge / F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS