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1.发明申请公开(公告)号：US20120014778A1
公开(公告)日：2012-01-19
申请号：US13181970
申请日：2011-07-13
IPC分类号： F01D11/02
CPC分类号： F01D11/22 , F01D11/06 , F05D2220/31 , F16J15/442 , F16J15/445
摘要： Subject: To provide a sealing structure, and control method therefor, which improve sealing performance between a rotating region and a fixed region, prevent fins from being damaged, and prevent increases in the amount of steam leakage from any clearances newly formed by further abrasion of an abradable material.Solution: The sealing structure in which free-cutting spacers 28 on a sealing base plate 25 and sealing fins 24 on a rotor 18 are opposed to each other is provided, in the sealing structure of which the sealing base plate 25 is disposed so as to be movable in an axial direction of the rotor 18. When a steam turbine 3 increases in load, a pressure head 30 moves in an axial steam-pressure loading direction of the rotor 18 and the sealing base plate 25 connected to the pressure head 30 moves in the axial steam-pressure loading direction. Since the free-cutting spacers 28 at positions opposed to those of the sealing fins 24 existing after the movement of the sealing base plate are maintained in a non-contact state, clearances between the sealing fins 24 and the free-cutting spacers 28 are dimensionally minimized.
摘要翻译： 主题：为了提供一种改善旋转区域和固定区域之间的密封性能的密封结构及其控制方法，防止翅片被损坏，并且防止由于进一步磨损而新形成的任何间隙的蒸汽泄漏量增加 耐磨材料。 解决方案：在密封基板25的密封结构中，设置密封基板25上的自由切割间隔件28和转子18上的密封翅片24彼此相对的密封结构， 可以在转子18的轴向方向上移动。当蒸汽轮机3的负载增加时，压头30在转子18的轴向蒸汽加载方向上移动，连接到压头30的密封基板25移动 在轴向蒸汽压力加载方向。 由于与在密封基板的移动之后存在的密封翅片24相对的位置处的自由切割间隔件28保持在非接触状态，所以密封翅片24和自由切割间隔件28之间的间隙是尺寸的 最小化。
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公开(公告)号：US20120148389A1
公开(公告)日：2012-06-14
申请号：US13396033
申请日：2012-02-14
IPC分类号： F01D11/08
CPC分类号： F01D11/02 , F01D11/001 , F01D11/08 , F05D2220/31 , F05D2250/182 , F05D2300/5024 , F16J15/162 , F16J15/445 , F16J15/4472
摘要： A seal structure for a steam turbine is provided, which is capable of suppressing transfer of heat generated by a friction between a rotating portion and a fixed portion to the rotating portion and of suppressing an increase in the temperature of the rotating portion. A labyrinth seal device serves to suppress the amount of steam leaking from a clearance present between each stator blade (fixed portion) of the steam turbine and a rotor (rotating portion). The seal structure for the steam turbine is formed to ensure that permeable spacers made of a permeable metal are provided on the rotor and a seal stationary body and face respective seal fins provided in the labyrinth seal device.
摘要翻译： 提供了一种用于蒸汽涡轮机的密封结构，其能够抑制由旋转部分和固定部分之间的摩擦产生的热量转移到旋转部分并抑制旋转部分的温度升高。 迷宫式密封装置用于抑制从蒸汽涡轮机的每个定子叶片（固定部分）和转子（旋转部分）之间存在的间隙泄漏的蒸汽量。 形成蒸汽轮机的密封结构，以确保在转子和密封件固定体上设置由可渗透金属构成的可渗透间隔件，并面对设置在迷宫式密封装置中的相应密封翅片。
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