CN104093937A - Rotor for a turbomachine - Google Patents

Rotor for a turbomachine Download PDF

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Publication number
CN104093937A
CN104093937A CN201280068164.7A CN201280068164A CN104093937A CN 104093937 A CN104093937 A CN 104093937A CN 201280068164 A CN201280068164 A CN 201280068164A CN 104093937 A CN104093937 A CN 104093937A
Authority
CN
China
Prior art keywords
rotor
rotor blade
blade row
row
section
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
Application number
CN201280068164.7A
Other languages
Chinese (zh)
Other versions
CN104093937B (en
Inventor
本杰明·库姆
诺贝特·聚尔肯
周小平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of CN104093937A publication Critical patent/CN104093937A/en
Application granted granted Critical
Publication of CN104093937B publication Critical patent/CN104093937B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • 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
    • F01D3/00—Machines or engines with axial-thrust balancing effected by working-fluid
    • F01D3/02—Machines or engines with axial-thrust balancing effected by working-fluid characterised by having one fluid flow in one axial direction and another fluid flow in the opposite direction
    • 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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
    • 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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/10—Anti- vibration means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/31—Application in turbines in steam turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/30—Arrangement of components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise
    • F05D2260/961—Preventing, counteracting or reducing vibration or noise by mistuning rotor blades or stator vanes with irregular interblade spacing, airfoil shape

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to a rotor for a double-flow turbomachine, wherein the first flow and the second flow have several rows of rotor blades, wherein at least one row of rotor blades is different from the corresponding row of rotor blades of the other flow.

Description

For the rotor of fluid machinery
Technical field
The present invention relates to the rotor that a kind of fluid machinery for double-current method is used in particular for steam turbine, wherein said rotor has for first the first rotor portion's section with for the second rotor part section of second, wherein said the first rotor portion section has the first rotor blade row, the second rotor blade row and other rotor blade row and last rotor blade row, and wherein the second rotor part section has the first rotor blade row, the second rotor blade row and other rotor blade row and last rotor blade row.
Background technique
For example steam turbine of fluid machinery consists essentially of the rotor of installing revolvably and the housing arranging around described rotor.Exist as follows dangerous, specific torsional frequency may cause the damage of rotor or cause being positioned at the damage of epitrochanterian rotor blade.Therefore for the rotor of fluid machinery for specific operation frequency window designs, in described operation frequency window, there is not torsional frequency, be wherein known that being arranged on epitrochanterian rotor blade has impact to torsional frequency.
Summary of the invention
The object of the invention is, propose a kind of rotor for fluid machinery, described rotor has the lower tendency that causes torsional frequency.
The rotor that this object is used in particular for steam turbine by a kind of fluid machinery for double-current method is realized, wherein said rotor has for first the first rotor portion's section with for the second rotor part section of second, wherein said the first rotor portion section has the first rotor blade row, the second rotor blade row and other rotor blade row and last rotor blade row, wherein said the second rotor part section has the first rotor blade row, the second rotor blade row and other rotor blade row and last rotor blade row, the configuration of the rotor blade row's of wherein said the first rotor portion section rotor blade differently designs with respect to the configuration of the rotor blade row's of the second rotor part section rotor blade, wherein said the first rotor portion rotor blade section and corresponding rotor blade row described the second rotor part section designs substantially the samely.
The present invention is from following basic thought, and in the rotor of double-current method design, the corresponding rotor blade of the rotor blade row in first-class and the associated of second is arranged and designed mutually the samely.Conventionally rotor not only has the first rotor blade row in first-class but also in second, and described the first rotor blade row in first-class and the first rotor blade row of described second design in the same manner.The rotor blade of the second rotor blade row in first-class and second designs equally in the same manner.These rotor blades row of first-class and second is the rotor blade row who corresponds to each other with regard to their substantially the same thermodynamic variables that changes flowing medium.
The present invention is now from following basic thought, and corresponding rotor blade row's identical embodiment is not mandatory essential.Or rather, the present invention, from following basic thought, differently forms first-class and second wittingly.This present invention is proposed, and the configuration of the rotor blade row's of the first rotor portion section rotor blade differently designs with respect to the configuration of the rotor blade row's of the second rotor part section rotor blade.Refer at this, the rotor blade row design differently from one another corresponding to each other, the rotor blade row that wherein remaining corresponds to each other designs substantially the samely.
Other preferred improvement project provides in the dependent claims.
Therefore in first favourable improvement project, the rotor blade that the last rotor blade row's of the first rotor portion section rotor blade is different from the last rotor blade row of the second rotor part section forms.Due to thermodynamic (al) reason, the length of last rotor blade row's rotor blade is not only maximum but also in second, is also maximum in first-class.Therefore last rotor blade row produces maximum impact to the torsional vibration of rotor.Therefore rotor blade row's variation produces large impact to whole rotor.
In a favourable improvement project, different rotor blade rows' rotor blade is different about its dynamic (dynamical) characteristic.
In another favourable improvement project, different rotor blade rows' rotor blade is different about its elastic characteristic.Except dynamic (dynamical) characteristic, the elastic characteristic of rotor blade also plays an important role in the time that torsional vibration exerts an influence to rotor.Therefore the dynamics of rotor blade and/or the variation of elastic characteristic cause the large impact on torsional vibration.
In another favourable improvement project, different rotor blade rows' rotor blade is different about its outside geometrical shape.
Same in a favourable improvement project, different rotor blade rows' rotor blade differently designs about its material.There is different frequency spectrums at the rotor blade differently designing aspect its geometrical shape, to such an extent as to the rotor blade row who differently designs aspect its geometrical shape, the torsional vibration of rotor is exerted an influence.The density of the material using and other physical property have large impact to torsional vibration.
In favourable improvement project, each rotor blade differently designs.Equally likely, change the multiple single rotor blade in rotor blade row or different rotor blade row, to therefore realize the change to torsional vibration.
In another favourable improvement project, multiple rotor blade rows of the first rotor portion section are with respect to the differently design of rotor blade row of second section.According to which kind of torsional vibration need to be expected to or which kind of torsional vibration must be attenuated, different rotor blade rows' rotor blade can differently design.
Brief description of the drawings
Elaborate the present invention according to embodiment now.
Accompanying drawing illustrates the viewgraph of cross-section according to rotor of the present invention schematically.
Embodiment
Fig. 1 illustrates the viewgraph of cross-section of the rotor 2 of installing revolvably around spin axis 1.Rotor 2 is characterised in that diameter 3, wherein on the surface 4 of rotor 2, is provided with rotor blade.Rotor 2 illustrated in the accompanying drawings comprises for first the first rotor portion section 5.This first rotor portion section 5 comprises the first rotor blade row 7, the second rotor blade row 8 and last rotor blade row 9.Other rotor blade is arranged because clearly reason is not shown.
The second rotor part section 6 comprises the first rotor blade row corresponding with first-class 4 the first rotor blade row 7 10, the second rotor blade row 11 and last rotor blade row 12 equally.The first rotor blade row 7 and rotor blade row 10 are that corresponding rotor blade is arranged each other.This means, according to prior art, these two rotor blade rows have identical configuration substantially.Correspondingly, the second rotor blade row 8 and the second rotor blade row 11 are corresponding rotor blade row equally.In last rotor blade row 9 and last rotor blade row 12, be this situation equally, that is to say, these two rotor blades rows are the rotor blade rows that correspond to each other.Multiple rotor blades are drawn together in each rotor blade package, and described rotor blade was arranged on the ring week of rotor 2.
According to the present invention, the configuration with respect to the last rotor blade row's 12 of the second rotor part section 6 rotor blade differently designs in the configuration of last rotor blade row 9 rotor blade.Because the configuration of the rotor blade in rotor blade row 9 differently designs with respect to rotor blade row 12 rotor blade, so the frequency characteristic of the whole frequency characteristic of rotor 2 when arrange substantially mutually the same design when rotor blade is different.
Remaining rotor blade row, that is to say, the first rotor blade row 7 is arranged 10 substantially the same designs corresponding to rotor blade.
Be in operation, fresh steam flows in the region 13 that becomes a mandarin via the portion of becoming a mandarin not being shown specifically and is divided into the second flow channel 15 in the first flow channel first the first rotor portion section 5 and the second rotor portion 6 in second from that.
Last rotor blade row's 9 rotor blade differently forms with respect to last rotor blade row's 12 rotor blade about its dynamics and/or elastic characteristic.Rotor blade to this different rotor blade row differently designs about its outside geometrical shape and/or material.
The configuration of the rotor blade of arranging by rotor blade according to variation of the present invention, obtain additional degrees of freedom, to change the torsional frequency in rotor 2.

Claims (8)

  1. One kind for double-current method fluid machinery, be used in particular for the rotor (2) of steam turbine,
    Wherein said rotor (2) has for first the first rotor portion's section (5) with for the second rotor part section (6) of second,
    Wherein said the first rotor portion's section (5) has the first rotor blade row (7), the second rotor blade row (8) and other rotor blade row and last rotor blade row (9),
    Wherein said the second rotor part section (6) has the first rotor blade row (10), the second rotor blade row (11) and other rotor blade row and last rotor blade row (12),
    The configuration of the rotor blade row's (7,8,9) of wherein said the first rotor portion section rotor blade differently designs with respect to the configuration of the rotor blade row's (10,11,12) of described the second rotor part section rotor blade,
    Wherein said the first rotor portion rotor blade section and corresponding rotor blade row described the second rotor part section designs substantially the samely.
  2. 2. rotor according to claim 1 (2),
    The last rotor blade row's (9) of wherein said the first rotor portion's section (5) rotor blade differently designs with respect to the last rotor blade row's (12) of described the second rotor part section (6) rotor blade.
  3. 3. rotor according to claim 1 and 2 (2),
    Wherein different rotor blade rows' rotor blade is different about its dynamics.
  4. 4. according to the rotor (2) described in claim 1,2 or 3,
    Wherein different rotor blade rows' rotor blade is different about its elastic characteristic.
  5. 5. according to the rotor described in any one in the claims (2),
    Wherein different rotor blade rows' rotor blade is different about its outside geometrical shape.
  6. 6. according to the rotor described in any one in the claims (2),
    Wherein different rotor blade rows' rotor blade is different about material.
  7. 7. according to the rotor described in any one in the claims (2),
    Wherein each rotor blade differently design in its rotor blade row.
  8. 8. according to the rotor described in any one in the claims (2),
    Multiple rotor blade rows of wherein said the first rotor portion's section (5) are with respect to the differently design of rotor blade row of described the second rotor part section (6).
CN201280068164.7A 2012-01-25 2012-11-08 For the rotor of double-current method fluid machinery Expired - Fee Related CN104093937B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12000481 2012-01-25
EP12000481.7 2012-01-25
PCT/EP2012/072096 WO2013110367A1 (en) 2012-01-25 2012-11-08 Rotor for a turbomachine

Publications (2)

Publication Number Publication Date
CN104093937A true CN104093937A (en) 2014-10-08
CN104093937B CN104093937B (en) 2016-05-18

Family

ID=47221328

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201280068164.7A Expired - Fee Related CN104093937B (en) 2012-01-25 2012-11-08 For the rotor of double-current method fluid machinery

Country Status (5)

Country Link
US (1) US20140369827A1 (en)
EP (1) EP2776679A1 (en)
JP (1) JP2015509161A (en)
CN (1) CN104093937B (en)
WO (1) WO2013110367A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106089307A (en) * 2016-07-29 2016-11-09 杭州汽轮机股份有限公司 A kind of low parameter big flow double split flow back pressure turbine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103821567B (en) * 2014-01-23 2015-11-18 西北工业大学 A kind of aircraft engine high pressure rotor Structural Design

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4108573A (en) * 1977-01-26 1978-08-22 Westinghouse Electric Corp. Vibratory tuning of rotatable blades for elastic fluid machines
US4245950A (en) * 1977-02-21 1981-01-20 Hitachi, Ltd. Turbine rotorconstructions
US20040126235A1 (en) * 2002-12-30 2004-07-01 Barb Kevin Joseph Method and apparatus for bucket natural frequency tuning
CN101046159A (en) * 2006-03-31 2007-10-03 通用电气公司 Methods and apparatus for reducing stress in turbine buckets
DE102009003771A1 (en) * 2008-04-15 2009-10-29 General Electric Co. Low Outlet Loss Turbine and Method for Minimizing Outlet Losses
US20100061857A1 (en) * 2008-09-09 2010-03-11 General Electric Company Steam turbine having stage with buckets of different materials

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5827503U (en) * 1981-08-19 1983-02-22 株式会社東芝 steam turbine
JPS59150903A (en) * 1983-02-09 1984-08-29 Toshiba Corp Blade arrangement of rotary machine
US4958985A (en) * 1989-03-01 1990-09-25 Westinghouse Electric Corp. Performance low pressure end blading

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4108573A (en) * 1977-01-26 1978-08-22 Westinghouse Electric Corp. Vibratory tuning of rotatable blades for elastic fluid machines
US4245950A (en) * 1977-02-21 1981-01-20 Hitachi, Ltd. Turbine rotorconstructions
US20040126235A1 (en) * 2002-12-30 2004-07-01 Barb Kevin Joseph Method and apparatus for bucket natural frequency tuning
CN101046159A (en) * 2006-03-31 2007-10-03 通用电气公司 Methods and apparatus for reducing stress in turbine buckets
DE102009003771A1 (en) * 2008-04-15 2009-10-29 General Electric Co. Low Outlet Loss Turbine and Method for Minimizing Outlet Losses
US20100061857A1 (en) * 2008-09-09 2010-03-11 General Electric Company Steam turbine having stage with buckets of different materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106089307A (en) * 2016-07-29 2016-11-09 杭州汽轮机股份有限公司 A kind of low parameter big flow double split flow back pressure turbine

Also Published As

Publication number Publication date
US20140369827A1 (en) 2014-12-18
WO2013110367A1 (en) 2013-08-01
JP2015509161A (en) 2015-03-26
EP2776679A1 (en) 2014-09-17
CN104093937B (en) 2016-05-18

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C10 Entry into substantive examination
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Granted publication date: 20160518

Termination date: 20161108