Steam turbine diffuser configuration
US-2016230573-A1 · Aug 11, 2016 · US
Controlled flow guides for turbines
US10662802B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10662802-B2 |
| Application number | US-201815859823-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 2, 2018 |
| Priority date | Jan 2, 2018 |
| Publication date | May 26, 2020 |
| Grant date | May 26, 2020 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
This application provides a steam turbine. The steam turbine may include a number of controlled flow runners and a number of controlled flow guides. The controlled flow guides may include an upstream passage ratio (Wup/W) of 0.4 to 0.7.
First claim
Opening claim text (preview).
I claim: 1. A steam turbine, comprising: a plurality of controlled flow runners; and a plurality of controlled flow guides; the plurality of controlled flow guides defines an upstream passage ratio (W up /W) of 0.4 to 0.7. 2. The steam turbine of claim 1 , wherein the upstream passage ratio (W up /W) is 0.6. 3. The steam turbine of claim 1 , wherein the plurality of controlled flow guides comprises a pitch to width ratio of more than 1.9. 4. The steam turbine of claim 1 , wherein the plurality of controlled flow guides comprises a suction side acceleration rate of −0.05 to −0.25 bar/mm. 5. The steam turbine of claim 1 , wherein the plurality of controlled flow guides comprises a suction side acceleration rate of −0.2 bar/mm. 6. The steam turbine of claim 1 , wherein each respective pair of the plurality of controlled flow guides comprises a throat therebetween. 7. The steam turbine of claim 6 , wherein each respective pair of the plurality of controlled flow guides comprises a Mach number distribution (M 1 /M 2 ) upstream of the throat of more than 1.01. 8. The steam turbine of claim 6 , wherein each respective pair of the plurality of controlled flow guides comprises a Mach number distribution upstream (M 1 /M 2 ) of the throat of 1.07. 9. The steam turbine of claim 1 , wherein the plurality of controlled flow guides comprises a deflection angle of between 25 degrees to 38 degrees. 10. The steam turbine of claim 1 , wherein the plurality of controlled flow guides comprises a deflection angle of 30 degrees. 11. The steam turbine of claim 1 , wherein the plurality of controlled flow guides is attached to a casing. 12. The steam turbine of claim 1 , wherein the plurality of controlled flow guides comprises a plurality of first stage controlled flow guides. 13. The steam turbine of claim 1 , wherein the plurality of controlled flow guides comprises a plurality of second stage controlled flow guides. 14. The steam turbine of claim 1 , wherein the plurality of controlled flow guides comprises a retrofit. 15. The steam turbine of claim 1 , wherein the plurality of controlled flow runners is attached to a disc.
Assignees
Inventors
Classifications
Impact turbines with buckets, i.e. impulse turbines, e.g. Pelton turbines (F01D1/16, F01D1/34 take precedence) · CPC title
in steam turbines · CPC title
- F01D17/16Primary
by means of nozzle vanes · CPC title
using blades (F01D5/148 takes precedence) · CPC title
related to the suction side of a rotor blade · CPC title
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Frequently asked questions
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- What does patent US10662802B2 cover?
- This application provides a steam turbine. The steam turbine may include a number of controlled flow runners and a number of controlled flow guides. The controlled flow guides may include an upstream passage ratio (Wup/W) of 0.4 to 0.7.
- Who is the assignee on this patent?
- Gen Electric
- What technology area does this patent fall under?
- Primary CPC classification F01D17/16. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue May 26 2020 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).