CN103375183A - Turbine vibration reduction system - Google Patents
Turbine vibration reduction system Download PDFInfo
- Publication number
- CN103375183A CN103375183A CN2013101350277A CN201310135027A CN103375183A CN 103375183 A CN103375183 A CN 103375183A CN 2013101350277 A CN2013101350277 A CN 2013101350277A CN 201310135027 A CN201310135027 A CN 201310135027A CN 103375183 A CN103375183 A CN 103375183A
- Authority
- CN
- China
- Prior art keywords
- opening
- vibration insulating
- turbine vibration
- nozzle
- insulating system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/04—Antivibration arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/04—Antivibration arrangements
- F01D25/06—Antivibration arrangements for preventing blade vibration
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Vibration Prevention Devices (AREA)
Abstract
A turbine vibration reduction system includes a nozzle, a bucket in operable communication with the nozzle, and a structure having at least one opening configured to inject fluid into flow traveling past the nozzle and the bucket to disrupt formation of a vortex.
Description
Technical field
Theme disclosed herein relates generally to turbine, and relates more specifically to the system for its vibration damping.
Summary of the invention
According to an aspect of the present invention, but a kind of turbine vibration insulating system comprises nozzle, with the wheel blade (bucket) of nozzle operable communication with have the structure of at least one opening, and this open construction becomes to spray a fluid in the stream that moves through nozzle and wheel blade the formation with destruction eddy current (vortex).
According to a further aspect in the invention, but a kind of turbine vibration insulating system comprises nozzle, with the afterbody wheel blade of nozzle operable communication with surround the shell of this afterbody wheel blade, be provided with the opening that is positioned at afterbody wheel blade downstream in this shell, this open construction becomes to spray a fluid in the stream that passes through the afterbody wheel blade, to destroy the formation of the eddy current in the fluid during the turbine operation state that is beneficial to eddy current formation.These and other advantage and feature will become more apparent from the description below in conjunction with accompanying drawing.
According to an aspect of the present invention, described fluid is steam.
According to an aspect of the present invention, described structure is hub.
According to an aspect of the present invention, described at least one opening is slit.
According to an aspect of the present invention, described at least one opening is a plurality of openings that circumferentially distribute around described hub.
According to an aspect of the present invention, described at least one opening is angled, with respect to the axis of described hub into about 25-45 degree angle uperize.
According to an aspect of the present invention, spray the steam of about 3.0 pounds of per seconds under described at least one open construction Cheng Zaiyue 1.0 pound per square inch.
According to an aspect of the present invention, described structure is shell.
According to an aspect of the present invention, described at least one opening is arranged in described shell in the part in described wheel blade downstream.
According to an aspect of the present invention, described at least one opening is a plurality of holes that circumferentially distribute around described shell.
According to an aspect of the present invention, a kind of turbine vibration insulating system comprises: nozzle; But the afterbody wheel blade with described nozzle operable communication; And the shell that surrounds described afterbody wheel blade, has the opening that is positioned at described afterbody wheel blade downstream in the described shell, described open construction becomes to spray a fluid in the stream that passes through described afterbody wheel blade, to destroy the formation of the eddy current in the described fluid during the turbine operation state that is beneficial to eddy current formation.
Description of drawings
Being considered as theme of the present invention specifically notes in claims of summary place of specification and clearly advocates right.From the detailed description below in conjunction with accompanying drawing, of the present invention aforementioned apparent with further feature and advantage, in the accompanying drawings:
Fig. 1 shows the embodiment's of the turbine vibration insulating system disclosed herein part of side view;
Fig. 2 shows the view from the wheel blade of computational fluid dynamics model, has shown eddy current;
Fig. 3 shows nozzle with line and the part of wheel blade, shows the position that eddy current forms;
Fig. 4 shows the part of side view of the alternate embodiment of turbine vibration insulating system disclosed herein; And
Fig. 5 shows the part of side view of another alternate embodiment of turbine vibration insulating system disclosed herein.
Detailed description has been introduced embodiments of the invention and advantage and feature by way of example.
List of parts
10 turbine vibration insulating systems
14 nozzles
16 structures
18 wheel blades
22 openings
30 eddy current
34 hubs (hub)
38 lines
46 shells
110 turbine vibration insulating systems
114 nozzles
122 openings
134 hubs
210 turbine vibration insulating systems
222 openings
224 shells.
Embodiment
With reference to Fig. 1, illustrate the turbine vibration insulating system with 10.But system 10 comprises nozzle 14, with the wheel blade 18 of nozzle 14 operable communication with have the structure 16 of at least one opening 22, and this opening 22 is configured to spray a fluid in the flow that moves through nozzle 14 and wheel blade 18.This embodiment adopts steam as fluid.
With reference to Fig. 2 and Fig. 3, in embodiment disclosed herein, the injection of steam destroyed near the wheel blade 18 flow point from.This flow point is from utilizing the computation fluid dynamics modeling and being shown as eddy current 30 at this, and this eddy current 30 produces near hub 34 and grows along line 38 radially outwards shown in Fig. 3.This flow point from often at full speed non-loaded operation, and particularly formation during high condenser pressure be combined.Stream is separated in upper unsettled aerodynamic force or the stochastic vibration (asynchronous vibration) of distributing of wheel blade (being generally L-0 (or afterbody) wheel blade).Embodiment disclosed herein discloses the system in order to uperize, uperize destroyed eddy current 30 formation (with flow point from) thus vibration damping.The embodiment of system disclosed herein also is configured to particularly uperize during the turbine operation state that is beneficial to eddy current formation.
Refer again to Fig. 1, be formed in a plurality of openings 22 in a plurality of nozzles 14 through at least one opening 22 of its uperize in this embodiment.Nozzle 14 is limiting structure 16 in this embodiment.Opening 22 can be positioned on the trailing edge of nozzle 14 and be oriented with the steam adjustment (align) from its discharge become with flow through wherein fluid in line.Opening 22 can be the hole with the diameter in 0.1 to 0.2 inch scope.Can be preferably opening 22 be positioned at comparing near shell 46 more in half one near hub 34 of each nozzle 14 for example towards the interior radially part of nozzle 14, and opening 22 is equally separated.Found the mass velocity of about 10.0 pounds of per seconds under the pressure of about 1.5 pound per square inches from the opening 22 in the nozzle 14 be enough to destroy flow point from.
With reference to Fig. 4, with 110 alternate embodiments that illustrate turbine vibration insulating system disclosed herein.The difference of system 110 and system 10 is the position through at least one opening 122 of its uperize.In this embodiment, hub 134 limiting structures 16 and at least one opening 122 are arranged in hub 134 between nozzle 114 and wheel blade 18.(a plurality of) opening 122 can have not isomorphism type, for example, is formed on axisymmetric slit (as shown in FIG.) or a plurality of hole in the hub 134.Found about 0.15 inch slit or had a 200-240 hole of about 0.15 inch diameter all very suitable.(a plurality of) opening 122 is oriented steam that axis with respect to hub 134 becomes 25-45 degree angle preferentially to adjust to spray to destroy the formation of eddy current 30.Come the mass velocity of about 3.0 pounds of per seconds under the pressure of about 1.0 pound per square inches of (a plurality of) opening 122 in the loose boss 134 be enough to destroy flow point from.
With reference to Fig. 5, with 210 another alternate embodiments that illustrate turbine vibration insulating system disclosed herein.The difference of system 210 and system 10 and 110 is can be through the position of at least one opening 222 of its uperize.In this embodiment, shell 224 limiting structures 16 and at least one opening 222 are arranged in the wheel blade 18 downstreams shell 224 of (as by the current limit by turbine vibration insulating system 210).In this embodiment, (a plurality of) opening 222 is positioned at about 2.0 inchs in wheel blade 18 downstreams.(a plurality of) opening 222 can be circumferentially be formed on the axisymmetric slit with about 0.5 inch width in the shell 224 or have about 0.5 inch diameter around a plurality of independent hole that shell 224 circumferentially distributes (about 200-240).(a plurality of) opening 222 is oriented the steam that becomes miter angle preferentially to adjust to spray with respect to the axis of hub 134 towards wheel blade 18 to destroy the formation of eddy current 30.From the mass velocity of about 10.0 pounds of per seconds under the pressure of about 1.5 pound per square inches of (a plurality of) opening 222 in the shell 224 be enough to destroy flow point from.
Should be noted that, although this paper in the accompanying drawings illustrated embodiment all only have independent opening 22,122 and 222 one of them, but the imagination alternate embodiment, it has independent opening 22,122 and 222 wherein one or more combination in single turbine vibration insulating system.
Although described the present invention in detail in conjunction with the embodiment of limited quantity only, should be understood that easily that the present invention is not limited to these disclosed embodiments.On the contrary, can make amendment to merge before this any amount of modification, remodeling, replacement or the equivalent arrangements of not describing but matching with the spirit and scope of the present invention to the present invention.In addition, although described various embodiment of the present invention, should be appreciated that All aspects of of the present invention can only comprise a part of described embodiment.Therefore, the present invention should not be regarded as limiting by the description of front, and only the scope by claims limits.
Claims (10)
1. turbine vibration insulating system comprises:
Nozzle;
But the wheel blade with described nozzle operable communication; And
Near the described wheel blade structure, described structure has at least one opening, and described open construction becomes to spray a fluid in the stream that moves through described nozzle and described wheel blade to destroy the formation of eddy current.
2. turbine vibration insulating system according to claim 1 is characterized in that, described at least one opening in described structure on the part between described nozzle and the described wheel blade.
3. turbine vibration insulating system according to claim 1 is characterized in that, described wheel blade is the afterbody wheel blade.
4. turbine vibration insulating system according to claim 1 is characterized in that, described structure is described nozzle.
5. turbine vibration insulating system according to claim 4 is characterized in that, described at least one opening is positioned at the trailing edge place of described nozzle.
6. turbine vibration insulating system according to claim 4 is characterized in that, described at least one opening is positioned in radially half one of described nozzle.
7. turbine vibration insulating system according to claim 4 is characterized in that, described at least one opening is the hole with about 0.15 inch diameter.
8. turbine vibration insulating system according to claim 4 is characterized in that, described at least one opening is a plurality of openings that equally separate on described nozzle.
9. turbine vibration insulating system according to claim 8 is characterized in that, described a plurality of openings are oriented and described stream uperize in line.
10. turbine vibration insulating system according to claim 4 is characterized in that, sprays the steam of about 10 pounds of per seconds under described at least one open construction Cheng Zaiyue 1.0 pound per square inch.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/450,170 US20130280050A1 (en) | 2012-04-18 | 2012-04-18 | Turbine vibration reduction system |
| US13/450170 | 2012-04-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103375183A true CN103375183A (en) | 2013-10-30 |
| CN103375183B CN103375183B (en) | 2016-08-17 |
Family
ID=48139760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310135027.7A Expired - Fee Related CN103375183B (en) | 2012-04-18 | 2013-04-18 | Turbine vibration reduction system |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20130280050A1 (en) |
| EP (1) | EP2653667A3 (en) |
| JP (1) | JP2013221522A (en) |
| CN (1) | CN103375183B (en) |
| RU (1) | RU2013117262A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2816199B1 (en) * | 2013-06-17 | 2021-09-01 | General Electric Technology GmbH | Control of low volumetric flow instabilities in steam turbines |
| EP2924245B1 (en) | 2014-03-24 | 2017-03-01 | General Electric Technology GmbH | Steam turbine with resonance chamber |
| US10371170B2 (en) | 2015-04-21 | 2019-08-06 | Pratt & Whitney Canada Corp. | Noise reduction using IGV flow ejections |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4255083A (en) * | 1976-11-05 | 1981-03-10 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation | Method and device for reducing the noise of turbo-machines |
| US4967550A (en) * | 1987-04-28 | 1990-11-06 | Rolls-Royce Plc | Active control of unsteady motion phenomena in turbomachinery |
| JP2002221005A (en) * | 2001-01-26 | 2002-08-09 | Ishikawajima Harima Heavy Ind Co Ltd | Cooling turbine blade |
| US20050135924A1 (en) * | 2003-12-22 | 2005-06-23 | Dilip Prasad | Airfoil surface impedance modification for noise reduction in turbofan engines |
| EP2204537A2 (en) * | 2008-12-31 | 2010-07-07 | Rolls-Royce North American Technologies, Inc. | Turbine vane for gas turbine engine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3756740A (en) * | 1971-08-11 | 1973-09-04 | M Deich | Turbine stage |
| JPH04127804U (en) * | 1991-05-10 | 1992-11-20 | 三菱重工業株式会社 | Vibration damping device for rotor blades |
| JP2000213303A (en) * | 1999-01-26 | 2000-08-02 | Ishikawajima Harima Heavy Ind Co Ltd | Blade damping method and blade damping structure |
| US6527509B2 (en) * | 1999-04-26 | 2003-03-04 | Hitachi, Ltd. | Turbo machines |
| JP4342840B2 (en) * | 2003-05-30 | 2009-10-14 | 株式会社東芝 | Steam turbine |
| WO2006060010A1 (en) * | 2004-12-01 | 2006-06-08 | United Technologies Corporation | Compressor inlet guide vane for tip turbine engine and corresponding control method |
| US20130064638A1 (en) * | 2011-09-08 | 2013-03-14 | Moorthi Subramaniyan | Boundary Layer Blowing Using Steam Seal Leakage Flow |
-
2012
- 2012-04-18 US US13/450,170 patent/US20130280050A1/en not_active Abandoned
-
2013
- 2013-04-16 EP EP13163840.5A patent/EP2653667A3/en not_active Withdrawn
- 2013-04-16 RU RU2013117262/06A patent/RU2013117262A/en not_active Application Discontinuation
- 2013-04-17 JP JP2013086179A patent/JP2013221522A/en active Pending
- 2013-04-18 CN CN201310135027.7A patent/CN103375183B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4255083A (en) * | 1976-11-05 | 1981-03-10 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation | Method and device for reducing the noise of turbo-machines |
| US4967550A (en) * | 1987-04-28 | 1990-11-06 | Rolls-Royce Plc | Active control of unsteady motion phenomena in turbomachinery |
| JP2002221005A (en) * | 2001-01-26 | 2002-08-09 | Ishikawajima Harima Heavy Ind Co Ltd | Cooling turbine blade |
| US20050135924A1 (en) * | 2003-12-22 | 2005-06-23 | Dilip Prasad | Airfoil surface impedance modification for noise reduction in turbofan engines |
| EP2204537A2 (en) * | 2008-12-31 | 2010-07-07 | Rolls-Royce North American Technologies, Inc. | Turbine vane for gas turbine engine |
Also Published As
| Publication number | Publication date |
|---|---|
| US20130280050A1 (en) | 2013-10-24 |
| EP2653667A3 (en) | 2014-01-01 |
| EP2653667A2 (en) | 2013-10-23 |
| RU2013117262A (en) | 2014-10-27 |
| JP2013221522A (en) | 2013-10-28 |
| CN103375183B (en) | 2016-08-17 |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170418 |