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    • 5. 发明申请
    • Gas Turbine
    • 燃气轮机
    • US20150204196A1
    • 2015-07-23
    • US14413826
    • 2012-09-12
    • Ichiro MiyoshiShinichi HiguchiMasami Noda
    • Ichiro MiyoshiShinichi HiguchiMasami Noda
    • F01D5/14F02C3/04
    • F01D5/143F01D5/082F01D5/145F01D5/187F01D5/20F02C3/04F05D2240/301F05D2240/55
    • The object of the invention is to suppress development of a secondary current whirl in the vicinity of a rotor blade front edge of a gas turbine even when a cooling refrigerant is mixed in from the front edge of an end wall section of the rotor blade. In a gas turbine rotor blade 4 including a wing shape section 12 formed of a negative pressure surface 12d extending from a front edge 12a to a rear edge 12b, a pressure surface 12c opposing the negative pressure surface 12d and extending from the front edge 12a to the rear edge 12b, and a tip surface 13 surrounded by the top end of the negative pressure surface 12d and the top end of the pressure surface 12c, and an end wall section 10 connected to the bottom end of the negative pressure surface 12d and the bottom end of the pressure surface 12c, the rotor blade has a convex shape in positions constituting the negative pressure surface 12d side and the front edge 12a side of the end wall section 10, and the rotor blade has a concave shape in positions constituting the pressure surface 12c side and the front edge 12a side of the end wall section 10.
    • 本发明的目的在于,即使从转子叶片的端壁部的前端部混入冷却制冷剂,也能够抑制燃气轮机的转子叶片前端附近的二次电流涡流的发展。 在包括由从前缘12a延伸到后边缘12b的负压面12d形成的翼形部12的燃气轮机转子叶片4中,与负压面12d相对并从前缘12a延伸到 后缘12b和由负压面12d的顶端和压力表面12c的顶端包围的前端表面13以及连接到负压表面12d的底端的端壁部10和 压力表面12c的底端,转子叶片在构成负压表面12d侧的位置和端壁部分10的前缘12a侧的位置具有凸形,并且转子叶片在构成压力的位置具有凹形 表面12c侧和端壁部10的前缘12a侧。
    • 6. 发明申请
    • Gas Turbine Stator Vane
    • 燃气轮机定子叶片
    • US20120275911A1
    • 2012-11-01
    • US13455612
    • 2012-04-25
    • Ichiro MiyoshiShinichi HiguchiMasami Noda
    • Ichiro MiyoshiShinichi HiguchiMasami Noda
    • F01D9/04
    • F01D9/041F01D5/143F05D2240/10F05D2240/80F05D2250/184F05D2250/711F05D2250/712
    • A gas turbine stator vane is effective for suppressing a secondary flow in a region sandwiched between a suction surface side and a pressure surface side, as well as for suppressing augmentation of a horseshoe-shaped vortex occurring near a leading edge of the vane. The stator vane includes a vane profile portion having a pressure surface concaved to a chord line of the vane, and a suction surface convexed to the chord line; an outer-circumferential end wall positioned at an outer circumferential side of the vane profile portion; and an inner-circumferential end wall positioned at an inner circumferential side of the vane profile portion. An outer-circumferential end wall inner surface that is an inner-circumferential surface of the outer-circumferential end wall has an inward convexed shape and an outward convexed shape, at the suction surface side of the vane profile portion.
    • 燃气轮机定子叶片对于抑制夹在吸入面侧和压力面侧的区域中的二次流动以及用于抑制在叶片的前缘附近发生的马蹄形涡流的增大是有效的。 定子叶片包括叶片轮廓部分,其具有凹陷到叶片的弦线的压力表面和凸起到弦线的吸力表面; 位于所述叶片轮廓部的外周侧的外周端壁; 以及位于叶片轮廓部的内周侧的内周端壁。 作为外周端壁的内周面的外周端壁内表面在叶片型面部的吸附面侧具有向内凸的形状和向外的凸出的形状。
    • 8. 发明授权
    • Gas turbine stator vane
    • 燃气轮机定子叶片
    • US09334745B2
    • 2016-05-10
    • US13455612
    • 2012-04-25
    • Ichiro MiyoshiShinichi HiguchiMasami Noda
    • Ichiro MiyoshiShinichi HiguchiMasami Noda
    • F01D9/04F01D5/14
    • F01D9/041F01D5/143F05D2240/10F05D2240/80F05D2250/184F05D2250/711F05D2250/712
    • A gas turbine stator vane is effective for suppressing a secondary flow in a region sandwiched between a suction surface side and a pressure surface side, as well as for suppressing augmentation of a horseshoe-shaped vortex occurring near a leading edge of the vane. The stator vane includes a vane profile portion having a pressure surface concaved to a chord line of the vane, and a suction surface convexed to the chord line; an outer-circumferential end wall positioned at an outer circumferential side of the vane profile portion; and an inner-circumferential end wall positioned at an inner circumferential side of the vane profile portion. An outer-circumferential end wall inner surface that is an inner-circumferential surface of the outer-circumferential end wall has an inward convexed shape and an outward convexed shape, at the suction surface side of the vane profile portion.
    • 燃气轮机定子叶片对于抑制夹在吸入面侧和压力面侧的区域中的二次流动以及用于抑制在叶片的前缘附近发生的马蹄形涡流的增大是有效的。 定子叶片包括叶片轮廓部分,其具有凹陷到叶片的弦线的压力表面和凸起到弦线的吸力表面; 位于所述叶片轮廓部的外周侧的外周端壁; 以及位于叶片轮廓部的内周侧的内周端壁。 作为外周端壁的内周面的外周端壁内表面在叶片型面部的吸附面侧具有向内凸的形状和向外的凸出的形状。
    • 9. 发明申请
    • Turbine Rotor Blade
    • 涡轮转子叶片
    • US20140294557A1
    • 2014-10-02
    • US13702557
    • 2011-12-07
    • Ichiro MiyoshiShinichi HiguchiMasami Noda
    • Ichiro MiyoshiShinichi HiguchiMasami Noda
    • F01D5/18
    • F01D5/18F01D5/186F01D5/187F01D5/20F05D2260/202
    • A turbine rotor blade is provided that can reduce a total pressure loss at a blade cross-section on a tip side of the blade and suppress degradation in performance even if cooling air mixes in toward the blade. The rotor blade is mounted to a rotor to form a turbine blade row rotating in a stationary member that includes a platform forming a gas passage through which a mainstream gas flows and an airfoil extending from a gas passage plane in a radial direction vertical to the rotational axis of the rotor, the gas passage plane being a plane of the platform and forming the gas passage. A clearance between the tip-side end face, which is a leading end-side end face of the airfoil, and the stationary member facing the tip-side end face is smaller on the downstream side than on the upstream side.
    • 提供了一种涡轮转子叶片,其可以降低叶片的叶片横截面处的总压力损失,并且即使冷却空气朝向叶片混合也能够降低性能的劣化。 转子叶片安装到转子上以形成在固定构件中旋转的涡轮叶片排,该固定构件包括形成主流气体流过的气体通道的平台和从气体通道平面沿垂直于旋转的径向延伸的翼型 转子的轴线,气体通道平面是平台的平面并形成气体通道。 作为翼型的前端侧端面的前端侧端面与面向前端侧端面的固定构件之间的间隙在下游侧比在上游侧小。