Hybrid passive and active tip clearance system
US-2015369076-A1 · Dec 24, 2015 · US
Active tip clearance control for shrouded gas turbine blades and related method
US8939715B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8939715-B2 |
| Application number | US-72887010-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 22, 2010 |
| Priority date | Mar 22, 2010 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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Abstract
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A turbine bucket tip clearance control system includes a rotor assembly having a rotor supporting a plurality of axially spaced wheels, each wheel mounting an annular row of buckets, the annular row of buckets on at least one of the plurality of axially-spaced wheels having a radially outer tip shroud provided with at least one seal tooth. A stator assembly includes a radially inwardly facing, axially-stepped surface, formed with radially inner and outer seal surfaces connected by a shoulder. The stator assembly and rotor assembly are moveable axially relative to each other, enabling selective positioning of the at least one seal tooth radially opposite one of the radially inner and outer seal surfaces to thereby selectively alter a clearance gap between the at least one seal tooth and the radially inward facing axially-stepped surface.
First claim
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I claim: 1. A turbine bucket tip clearance control system comprising: a rotor assembly including a rotor having a plurality of axially spaced wheels, each of said axially-spaced wheels mounting an annular row of buckets, said annular row of buckets on at least one of said plurality of axially-spaced wheels having a radially outer tip shroud provided with at least one seal tooth; a stator assembly including a radially inwardly facing, axially-stepped surface arranged to be opposi…
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- What does patent US8939715B2 cover?
- A turbine bucket tip clearance control system includes a rotor assembly having a rotor supporting a plurality of axially spaced wheels, each wheel mounting an annular row of buckets, the annular row of buckets on at least one of the plurality of axially-spaced wheels having a radially outer tip shroud provided with at least one seal tooth. A stator assembly includes a radially inwardly facing, …
- Who is the assignee on this patent?
- Miller Harold Edward, Gen Electric
- What technology area does this patent fall under?
- Primary CPC classification F01D11/22. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 27 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).