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公开(公告)号:US20150369075A1
公开(公告)日:2015-12-24
申请号:US14651436
申请日:2012-12-13
发明人: Noriyo NISHIJIMA , Akira ENDO , Kazuyuki YAMAGUCHI
IPC分类号: F01D11/08 , F04D19/00 , F04D29/08 , F01D25/24 , F04D29/32 , F04D29/54 , F01D1/02 , F01D9/04 , F04D3/00 , F04D29/18
CPC分类号: F01D11/08 , F01D1/02 , F01D5/10 , F01D5/20 , F01D5/225 , F01D9/041 , F01D11/02 , F01D25/24 , F04D3/00 , F04D19/007 , F04D29/08 , F04D29/181 , F04D29/32 , F04D29/54 , F05D2220/31 , F05D2220/32 , F05D2240/55
摘要: Provided is a rotating fluid machine capable of holding down a decrease rate of a circumferential velocity of a leakage fluid in an interspatial flow passage and thereby controlling an unstable fluid force. A steam turbine includes: an interspatial flow passage 15 formed between an outer circumferential surface of a rotor blade cover 6 and an inner circumferential surface of a grooved section 14 in a casing 1; annular sealing fins 17A to 17D spatially arranged in a direction of a rotor axis, at a side of the rotor blade cover 6 in the interspatial flow passage 15; and a friction enhancement portion (more specifically, rough surfaces 19A to 19E) disposed over the whole circumference on the side of the rotor blade cover 6 in the interspatial flow passage 15.
摘要翻译: 本发明提供一种旋转流体机械,其能够抑制间隙流路中的泄漏流体的圆周速度的降低率,从而控制不稳定的流体力。 蒸汽轮机包括:形成在转子叶片盖6的外周面和壳体1中的带槽部14的内周面之间的空间流路15; 在空间流路15中的转子叶片盖6的一侧沿转子轴线的方向空间地设置的环形密封翅片17A〜17D; 以及设置在空间流路15的转子叶片盖6一侧的整个圆周上的摩擦增强部(更具体地,粗糙面19A〜19E)。
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公开(公告)号:US20170016342A1
公开(公告)日:2017-01-19
申请号:US15278350
申请日:2016-09-28
CPC分类号: F01D11/08 , F01D5/225 , F01D9/041 , F05D2220/31 , F05D2240/11 , F05D2240/12 , F05D2240/30
摘要: An axial flow turbine that can enhance an effect of reducing a mixing loss is disclosed. The axial flow turbine includes a plurality of stator blades provided on the inner circumferential side of a diaphragm outer ring; a plurality of rotor blades provided on the outer circumferential side of a rotor; a shroud provided on the outer circumferential side of the plurality of rotor blades; an annular groove portion formed in the diaphragm outer ring and housing the shroud therein; a clearance passage defined between the groove portion and the shroud, into which a portion of working fluid flows from the downstream side of the stator blades in a main passage; seal fins provided in the clearance passage; a circulation flow generating chamber defined on the downstream side of the clearance passage; and a plurality of shielding plates secured to the diaphragm outer ring.
摘要翻译: 公开了一种可以增强减少混合损失的效果的轴流涡轮机。 轴流涡轮机包括设置在隔膜外圈的内周侧的多个定子叶片; 设置在转子的外周侧的多个转子叶片; 设置在所述多个转子叶片的外周侧的护罩; 形成在所述隔膜外圈中并将所述护罩容纳在其中的环形槽部; 间隙通道,限定在所述槽部和所述护罩之间,一部分工作流体从所述定子叶片的下游侧在主通道中流动; 设置在间隙通道中的密封翅片; 限定在所述间隙通道的下游侧的循环流产生室; 以及固定到隔膜外圈的多个屏蔽板。
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