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    • 7. 发明授权
    • Turbine
    • 涡轮
    • US08784046B2
    • 2014-07-22
    • US13386084
    • 2010-10-04
    • Yoshihiro KuwamuraKazuyuki MatsumotoHiroharu OoyamaYoshinori TanakaAsaharu Matsuo
    • Yoshihiro KuwamuraKazuyuki MatsumotoHiroharu OoyamaYoshinori TanakaAsaharu Matsuo
    • F01D11/02
    • F16J15/4472F01D5/225F01D11/001F01D11/02F01D11/08
    • The turbine is provided with a blade (50) and a structure body (11) which rotates relatively with respect to the blade (50). A stepped part (52A) having a step surface (53A) is installed at one of the leading end of the blade (50) and the structure body (11) corresponding to the leading end thereof, while a seal fin (15A) which extends toward the stepped part (52A) to form a small space (H) is installed at the other of them. A cavity (C1) is formed between the blade (50) and the structure body (11) and also between the seal fin (15A) and the partition wall which faces thereto in the rotating shaft direction of the structure body (11) on the upstream side. When a distance of the cavity (C1) between the partition wall and the seal fin (15A) is given as a cavity width (W), and a distance between the seal fin (15A) and the end edge (55) of the stepped part (52A) in the rotating shaft direction on the upstream side is given as (L), at least one of the distances (L) satisfies the following formula (1). 0.7H≦L≦0.3W  (1).
    • 涡轮机设置有相对于叶片(50)旋转的叶片(50)和结构体(11)。 具有台阶面(53A)的阶梯部(52A)安装在与其前端对应的叶片(50)和结构体(11)的前端中的一个上,而延伸的密封翅片 在台阶部分(52A)上形成一个较小的空间(H)。 在叶片(50)和结构体(11)之间以及在结构体(11)的旋转轴方向上与密封翅片(15A)和分隔壁之间形成的空腔(C1) 上游侧。 当分隔壁和密封翅片(15A)之间的空腔(C1)的距离被给定为空腔宽度(W)时,并且密封翅片(15A)和阶梯状的边缘(55)之间的距离 在上游侧的旋转轴方向上的部分(52A)被给出为(L),距离(L)中的至少一个满足下式(1)。 0.7H≦̸ L≦̸ 0.3W(1)。
    • 8. 发明申请
    • TURBINE
    • 涡轮
    • US20130272855A1
    • 2013-10-17
    • US13995542
    • 2011-12-22
    • Yoshihiro KuwamuraKazuyuki MatsumotoHiroharu OyamaYoshinori TanakaAsaharu Matsuo
    • Yoshihiro KuwamuraKazuyuki MatsumotoHiroharu OyamaYoshinori TanakaAsaharu Matsuo
    • F01D11/04
    • F01D11/04F01D5/225F01D11/10F05D2250/294
    • A turbine includes a blade, a structure installed at a tip section side of the blade via a gap and configured to relatively rotate with respect to the blade, a step section formed at the tip section of the blade, having at least one step surface, and protruding toward a portion opposite to the tip section of the structure, a seal fin formed at the portion opposite to the tip section of the structure, extending toward the step section, and configured to form a micro gap between the step section and the seal fin, and a cutout section formed at the step surface to be connected to an upper surface of the step section. The cutout section guides a separation vortex separated from a main stream of a fluid passing through the gap toward the seal fin on the upper surface of the step section.
    • 涡轮机包括叶片,通过间隙安装在叶片的尖端部侧的结构,其构造成相对于叶片相对旋转;台阶部,形成在叶片的尖端部分,具有至少一个台阶表面, 并且向与所述结构的前端部相反的部分突出,形成在与所述结构的前端部相反的部分处的所述密封翅片朝向所述台阶部延伸,并且构造成在所述台阶部与所述密封件之间形成微缝隙 翅片和形成在台阶表面处以与台阶部分的上表面连接的切口部分。 切口部分引导从步进部分的上表面上的通过间隙的流体的主流与密封翅片分离的分离涡流。
    • 9. 发明申请
    • TURBINE
    • 涡轮
    • US20130149124A1
    • 2013-06-13
    • US13817893
    • 2011-09-08
    • Yoshihiro KuwamuraKazuyuki MatsumotoHiroharu OyamaYoshinori TanakaMasaaki MatsuuraAsaharu Matsuo
    • Yoshihiro KuwamuraKazuyuki MatsumotoHiroharu OyamaYoshinori TanakaMasaaki MatsuuraAsaharu Matsuo
    • F01D9/00
    • F01D9/00F01D5/225F01D11/001F01D11/02F01D11/08F05D2220/31F16J15/4472
    • The turbine (1) according to the present invention includes: a blade body (50) having a blade (59) provided at one of a rotor rotatably supported and a stator provided around the rotor and extending in a radial direction toward the other side from one side and a shroud (51) extending in a circumferential direction at a tip portion in the radial direction of the blade (59); and an accommodating concave body (11) provided at the other of the rotor and the stator, extending in the circumferential direction, accommodating the shroud (51) with a gap (G) interposed therebetween, and relatively rotating with respect to the blade body (50), wherein leakage flow (L) leaked from main flow (M) flowing along the blade (59) flows into the gap (G); and wherein the shroud is provided with a guide curved surface formed between a peripheral surface (53C) facing the accommodating concave body (11) and a trailing edge end portion (56) formed closer to the main flow (M) side in a downstream of the leakage flow (L) than the peripheral surface (53C) in a downstream of the leakage flow (L), wherein a guide curved surface (57) is configured to guide the leakage flow (L) along the peripheral surface (53C) from the peripheral surface (53C) to the trailing edge end portion (56).
    • 根据本发明的涡轮机(1)包括:叶片体(50),其具有设置在可转动地支撑的转子中的一个叶片(59)和设置在转子周围的定子,并且沿径向朝向另一侧 一侧和在所述叶片(59)的径向方向上的前端部沿圆周方向延伸的护罩(51); 以及设置在所述转子和所述定子的另一侧的容纳凹体(11),其沿圆周方向延伸,以间隙(G)容纳所述罩(51),并相对于所述叶片体相对旋转 50),其中从所述叶片(59)流动的主流(M)泄漏的泄漏流(L)流入所述间隙(G); 并且其中所述护罩设置有引导弯曲表面,所述引导弯曲表面形成在面向所述容纳凹形主体(11)的外周表面(53C)和在靠近所述主流(M)侧的下游侧形成的后缘端部 所述泄漏流(L)比所述泄漏流(L)的下游侧的所述周面(53C)低,其特征在于,所述引导曲面(57)构成为沿着所述外周面(53C)引导所述泄漏流(L) 所述周边表面(53C)到所述后缘端部(56)。