CN103485844B - Turbine and method for mitigating out of roundness effects of turbine - Google Patents

Turbine and method for mitigating out of roundness effects of turbine Download PDF

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Publication number
CN103485844B
CN103485844B CN201310230832.8A CN201310230832A CN103485844B CN 103485844 B CN103485844 B CN 103485844B CN 201310230832 A CN201310230832 A CN 201310230832A CN 103485844 B CN103485844 B CN 103485844B
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China
Prior art keywords
turbine casing
interior
ring insert
degree
turbine
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CN201310230832.8A
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CN103485844A (en
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S.C.皮萨斯基
K.D.布莱克
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General Electric Co PLC
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General Electric Co
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F01D25/26Double casings; Measures against temperature strain in casings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00Manufacture
    • F05D2230/60Assembly methods
    • F05D2230/64Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
    • F05D2230/642Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins using maintaining alignment while permitting differential dilatation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49229Prime mover or fluid pump making
    • Y10T29/49231I.C. [internal combustion] engine making
    • Y10T29/49234Rotary or radial engine making

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

Abstract

A turbine and a method of mitigating out-of-roundness effects at a turbine are disclosed. An inner turbine shell and an outer turbine shell of the turbine are provided. The inner turbine shell is coupled to the outer turbine shell by using a ring insert. The ring insert is segmented into a plurality of ring insert segments (302) that reduce a transfer of load from the outer turbine shell to the inner turbine shell to mitigate out-of-roundness of the inner turbine shell.

Description

Turbine and the method for reducing turbine mistake circle impact
Technical field
The present invention relates to a kind of apparatus and method for reducing mistake circle impact in the inner turbine of combustion gas turbine.
Background technology
Some turbine portion designs include:Interior turbine casing, the interior turbine casing provides stream so that working gas is worn Cross the turbine;And outer turbine casing, the outer turbine casing is around the interior turbine casing.In general, with many The rotor of individual blade is arranged in the interior turbine casing, and is rotated because the working gas passes through the turbine. Interval between the interior turbine casing and the plurality of turbine blade determines turbine efficiency and power generation, and may Circular cross-section deviation effects are produced by the interior turbine casing, this deviation also referred to as loses circle.Due to interior turbine casing with it is outer Connection between turbine casing, the load that various operational stresses induceds are caused generally is delivered to the interior turbine from the outer turbine casing Casing and cause the interior turbine casing distortion, this distortion is a kind of situation for referred to as losing circle.Therefore, it is intended that designing drop It is low to lose the turbine casing that circle affects.The present invention provides a kind of reduction load and transmits to come between outer turbine casing and interior turbine casing Reduce the method and apparatus for losing circle effect.
The content of the invention
According to one side, the present invention provides a kind of reduction on turbine and loses the method that circle affects, and methods described includes: The interior turbine casing of the turbine is provided in the outer turbine casing of the turbine;And will be described interior using ring insert Turbine casing is connected to the outer turbine casing, and the ring insert is divided into multiple ring insert sections, to reduce from institute State outer turbine casing to transmit to the load of the interior turbine casing, so as to the mistake for slowing down the interior turbine casing is justified.
According on the other hand, the present invention provides a kind of turbine, and the turbine includes:Outer turbine casing;Interior turbine Shell;And ring insert, the ring insert is configured for for the interior turbine casing being connected to the outer turbine Shell, and it is divided into multiple ring insert sections, pass to reduce from the outer turbine casing to the load of the interior turbine casing Pass.
These and other advantages and features will be clearer from the following description for combine accompanying drawing.
Description of the drawings
The above and other feature and excellent of the present invention can be understood that by the detailed description below in conjunction with accompanying drawing Point, in the accompanying drawings:
Fig. 1 illustrates the side cross-sectional of the exemplary interior turbine casing of the turbogenerator in one embodiment of the present invention Figure;
The section of interior turbine casing shown in Fig. 1 that Fig. 2 illustrates including thrust ring;
Fig. 3 illustrates the sectional view of the exemplary shell sector in an exemplary embodiment;And
Figure 4 and 5 illustrate the exemplary interior turbine of each temporal present invention during exemplary turbine operation circulation The plotting of the circumference of casing.
Specific embodiment refer to the attached drawing introduces by way of example every embodiment and advantages and features of the present invention.
Specific embodiment
Fig. 1 illustrates the side-looking of the exemplary interior turbine casing 100 of the combustion gas turbine in one embodiment of the present invention Sectional view.The exemplary interior turbine casing 100 provides hollow shell, and the hollow shell extends along longitudinal axis 102, and And the outlet 106 with the entrance 104 in the first end of the longitudinal axis and on the second end of the longitudinal axis.Institute It is generally rotational symmetric around its longitudinal axis 102 to state turbine casing.Turning with multiple turbine blade (not shown) Son is arranged in the interior turbine casing 100 generally along the longitudinal axis 102.It is expelled at entrance 104 in described Working gas in turbine casing 100 causes the turbine blade displacement, so as to cause the turbine blade to rotate, thus Cause the rotor rotary electrification.In every embodiment, the interior turbine casing 100 is made up of two or more parts, These parts are also referred to as in this manual shell sector, described to be fit partially within together to constitute the interior turbine casing 100.Show Selected azimuth is crossed in example property shell sector generally surround the longitudinal axis 102.Two or more shell sectors are via bolt 112 are combined together on interface 110.The shell sector of cooperation provides the Cooling Holes or air through the interior turbine casing 100 Passage 114, air is provided to the nozzle (not shown) being assembled on the interior turbine casing.The interior turbine casing is in institute State and the outer turbine casing is connected at the thrust ring 116 of interior turbine casing 100.The interior turbine casing includes thrust ring 116.
The section of interior turbine casing shown in Fig. 1 that Fig. 2 illustrates including thrust ring 116.In every embodiment, the thrust Ring 116 is segmentation.The thrust ring 116 of the segmentation of the interior turbine casing includes groove 118, and ring insert is inserted into institute In stating groove.The interior turbine casing is connected to the outer turbine casing by the ring insert, to support the interior turbine Casing.The ring insert provides contact area between the interior turbine casing and the outer turbine casing.Show at one In example property embodiment, the ring insert is divided into multiple ring insert sections, and the plurality of ring insert section is separated Open, circumferentially to provide gap between these sections.Therefore, the plurality of ring insert section is little as the child's hair twisted in a knot-childhood of opposite side In 360 degree.
Fig. 3 illustrates the section view of the shell sector in an exemplary embodiment of the present invention.Exemplary interior turbine casing by Four shell sector compositions, four shell sectors each constitute a quarter of the interior turbine casing 300.It is illustrated that example Property shell sector 315.It is illustrated that ring insert section 302 on the exemplary shell sector 315.The ring insert section 302 extend to second orientation position 306 along the circumference of sector 315 from first orientation position 304, so as to as the right of angle 320 Side.In one embodiment, angle 320 is less than 90 degree.In another embodiment, angle 320 is between about 15 degree and 85 degree.Again In one embodiment, angle 320 is between about 30 degree and about 70 degree.In an exemplary embodiment, the ring insert section 302 are uniformly arranged between the first coordinates interface 310 of shell sector 315 and the second coordinates interface 312, so that described The distance between one position of orientation 304 and described first coordinates interface 310 with the second orientation position 306 and described second The distance between coordinates interface 312 is substantially the same.Therefore, connecing between the outer turbine casing and the interior turbine casing Tactile region is less than 360 degree.The contact area of this reduction is caused between the outer turbine casing and the interior turbine casing Load transfer region reduces.In alternative embodiments, the exemplary shell sector 315 can include be spaced apart from each other two or More ring segments.
On the one hand, the length of the ring insert section can be determined using processor.Example processor can To be simulated, to determine the length of the ring insert section when the mistake circle of the interior turbine casing meets selected standard Degree.The processor can simulate the various operation circulations of turbine, and determine the interior turbine during the circulation Shell is justified in each temporal mistake.
Or, can construct and operate the turbine with example annular insert section.Sensor can be arranged On each position of the interior turbine casing, and institute can be observed when turbine operation is by various operation circulations State the mistake circle of interior turbine casing.Therefore, it can lose what circle affected relative to reduction by observing various ring insert segment length Effect is determining ring insert segment length and interval.
On the one hand, select in the length for losing ring segment when circle meets selected standard.In every embodiment, in the ring When the length of shape section causes the mistake circle of the interior turbine casing in acceptable tolerance levels, suitable section is selected.At another In embodiment, the selected standard can be the mistake circle tolerance in selected time frame.
Fig. 4 is illustrated during exemplary turbine is operated in each temporal exemplary interior turbine casing of the invention The plotting of circumference.From the analysis model in terms of the radial displacement measurement of the circumference, this measurement surrounds institute for the plotting output of Fig. 4 State circumference is being carried out once every about 5 degree.Or, generally can be come using about 10 sensors placed around the circumference Marked and drawed, so as to test configuration into shell, radial measurement is obtained on each time, described each time is by reference number 401 (upon actuation 1654 seconds), 402 (2374 seconds), 403 (2874 seconds), 404 (4174 seconds), 405 (100000 seconds) and 406 Indicate within (100967 seconds).Fig. 5 illustrates the plotting of the circumference of the exemplary interior turbine casings of the Fig. 4 on later time.At each Between it is upper obtain radial measurement, described each time by 501 (105618 seconds), 502 (114400 seconds), 503 (116055 seconds), 504 (116271 seconds), 505 (116775 seconds) and 506 instructions in (214400 seconds).The exemplary interior turbine casing generally runs By one or more increases and the circulation of reduction electric power output.The circumference of the interior turbine casing is generally through being heated Increase and reduced by cooling down.More early time (i.e. time 401) illustrates the interior turbine casing with substantially circular section.With Will illustrate in the turbine of height output level (i.e. time 404,405 and 406) operation.Specifically, the time 404 show Go out and there is the larger interior turbine casing for losing circle effect in height output level.The circumference is shown as into the time of operation circulation 503 and 504 are reduced to relatively low output level.Various degrees of mistake circle will be illustrated.The circumference is shown as into operation circulation Time 506 is lifted again to height output level.As shown in figure 5, on the time 506, the mistake circle degree of the shell is relatively light.When When the mistake circle effect is in acceptable tolerance, operator can select ring segment to use in the turbine.
Therefore, on the one hand, the present invention provides a kind of reduction on turbine and loses the method that circle affects, methods described bag Include:The interior turbine casing of the turbine is provided in the outer turbine casing of the turbine;And will using ring insert The interior turbine casing is connected to the outer turbine casing, and the ring insert is divided into multiple ring insert sections, to subtract It is few to transmit from the outer turbine casing to the load of the interior turbine casing, so as to the mistake for slowing down the interior turbine casing is justified. In one embodiment, the plurality of ring insert section includes four ring insert sections.In the ring insert section extremely The opposite side at the angle of the longitudinal axis measurement of interior turbine casing described in a few ring insert Duan Weicong, the angle selected from it is following its In one:I () is less than 90 degree;(ii) between about 15 degree and about 85 degree;And (iii) is between about 30 degree and about 70 degree.Place Reason device may be used to determine the interior turbine casing mistake circle meet selected standard when the ring insert section length and Position.The length of ring insert section is passed through and selected, to reduce between the outer turbine casing and the interior turbine casing Load paths.In every embodiment, thermal stress of the load on the outer turbine casing.The ring insert Section is arranged on the thrust ring of the interior turbine casing, and the circumference around the interior turbine casing is on equidistant position.Each In item embodiment, the interior turbine casing is made up of at least two orientation shell sectors.
A kind of turbine includes:Outer turbine casing;Interior turbine casing;And ring insert, the ring insert Jing It is configured to for the interior turbine casing to be connected to the outer turbine casing, and is divided into multiple ring insert sections, to subtract It is few to transmit from the outer turbine casing to the load of the interior turbine casing.In an exemplary embodiment, the annular is inserted Enter part and be divided into four ring insert sections.Ring insert section described at least one is selected from following wherein one as the angle of its opposite side :I () is less than 90 degree;(ii) between about 15 degree and 85 degree;And (iii) is between about 30 degree and about 70 degree.Operation is described The processor of the program of the model of turbine may be used to determine the length of the ring insert.The ring insert section The length substantially pass through selection, to reduce the load road between the outer turbine casing and the interior turbine casing Footpath.The load relates generally to the thermal stress on the outer turbine casing.In an exemplary embodiment, the annular is inserted The even circumferential for entering part section around the interior turbine casing is spaced apart.In every embodiment, the interior turbine casing is by institute At least two shell sectors extended on azimuth are selected to constitute.
Although the present invention is only described in detail with reference to the embodiment of limited quantity, it should be readily understood that the present invention is not It is limited to such disclosed embodiment.Conversely, the present invention can modify, so as to be incorporated to before this not description but with this Any amount of change, change, replacement or equivalent arrangements that bright spirit and scope are consistent.Although additionally, the items of the present invention Embodiment is described, it is to be understood that various aspects of the invention can only include some in the embodiment.Therefore, The present invention shall not be considered limited to described above, and be limited only in the scope of the appended claims.

Claims (16)

1. it is a kind of to lose the method that circle affects for reducing turbine, including:
The interior turbine casing of the turbine is arranged in the outer turbine casing of the turbine, the interior turbine casing includes Multiple shell sectors, the shell sector forms angle corresponding thereto and is connected at coordinates interface;And
The interior turbine casing is connected to into the outer turbine casing using multiple ring insert sections, to reduce from described outer Turbine casing to the load of the interior turbine casing is transmitted, so as to reduce the mistake circularity of the interior turbine casing, one of ring The shape insert Duan Yuyi shell sector is associated and the relative angle of the ring insert section is less than the shell sector institute Relative angle.
2. the method for claim 1, wherein the plurality of ring insert section further includes four ring inserts Section.
3. method as claimed in claim 2, interior turbine casing described in ring insert Duan Weicong described in wherein at least one The opposite side at the angle of longitudinal axis measurement, the angle is selected from one of:I () is less than 90 degree;(ii) 15 degree with 85 degree it Between;And (iii) is between 30 degree and 70 degree.
4. the method for claim 1, further includes to determine using processor when the mistake of the interior turbine casing is justified Degree meets the length of ring insert section during selected standard.
5. the length of the method for claim 1, wherein ring insert section through selecting, to reduce in the outer whirlpool Load paths between wheel casing and the interior turbine casing.
6. the method for claim 1, wherein the load transmitted is caused by the thermal stress on the outer turbine casing 's.
7. the method for claim 1, wherein the ring insert section is equidistant around the circumference of the interior turbine casing It is liftoff to be arranged on the thrust ring of the interior turbine casing.
8. the method for claim 1, wherein the interior turbine casing is made up of at least two orientation shell sectors.
9. a kind of turbine, including:
Outer turbine casing;
Interior turbine casing, it is arranged in the outer turbine casing, and the interior turbine casing includes multiple shell sectors, the shell fan Area forms angle corresponding thereto and is connected at coordinates interface;And
Multiple ring insert sections, the plurality of ring insert section is configured to that the interior turbine casing is connected to outside described Turbine casing, transmits to reduce from the outer turbine casing to the load of the interior turbine casing, one of annular insertion The part Duan Yuyi shell sector is associated and the relative angle of the ring insert section is relative less than the shell sector Angle.
10. turbine as claimed in claim 9, wherein the plurality of ring insert section is divided into four ring insert sections.
11. turbines as claimed in claim 10, ring insert section described in wherein at least one is selected as the angle of its opposite side From following one of which:I () is less than 90 degree;(ii) between 15 degree and 85 degree;And (iii) is between 30 degree and 70 degree.
12. turbines as claimed in claim 9, wherein being determined using the processor of the model program for running the turbine The length of the ring insert section.
13. turbines as claimed in claim 9, wherein the length of the ring insert section is through selecting, to reduce Load paths between the outer turbine casing and the interior turbine casing.
14. turbines as claimed in claim 9, wherein the load is related to the thermal stress on the outer turbine casing.
15. turbines as claimed in claim 9, wherein the ring insert section is equal around the circumference of the interior turbine casing It is even to separate.
16. turbines as claimed in claim 9, wherein the interior turbine casing is by least two extended on selected azimuth Individual shell sector is constituted.
CN201310230832.8A 2012-06-11 2013-06-09 Turbine and method for mitigating out of roundness effects of turbine Active CN103485844B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/493,435 US20130330187A1 (en) 2012-06-11 2012-06-11 Method and apparatus for mitigating out of roundness effects at a turbine
US13/493435 2012-06-11

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CN103485844A CN103485844A (en) 2014-01-01
CN103485844B true CN103485844B (en) 2017-04-12

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EP (1) EP2674580A1 (en)
JP (1) JP2013256945A (en)
CN (1) CN103485844B (en)
RU (1) RU2013126491A (en)

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Publication number Priority date Publication date Assignee Title
CN1076991A (en) * 1991-11-05 1993-10-06 西门子公司 The structure for heat displacement of gap seal of turbine
US6733233B2 (en) * 2002-04-26 2004-05-11 Pratt & Whitney Canada Corp. Attachment of a ceramic shroud in a metal housing
CN101382087A (en) * 2007-08-23 2009-03-11 通用电气公司 Apparatus and method for reducing eccentricity and out-of-roundness in turbines
CN101892875A (en) * 2009-05-22 2010-11-24 通用电气公司 Active housing track control system and method

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GB229627A (en) * 1924-02-19 1926-01-14 Jan Kieswetter Improvements relating to turbine casings having transverse partitions and the like therein
US1873743A (en) * 1930-11-15 1932-08-23 Gen Electric Elastic fluid turbine
US3892497A (en) * 1974-05-14 1975-07-01 Westinghouse Electric Corp Axial flow turbine stationary blade and blade ring locking arrangement
CH592262A5 (en) * 1975-07-04 1977-10-14 Bbc Brown Boveri & Cie
US7617602B2 (en) * 2005-08-18 2009-11-17 General Electric Company Method of servicing a turbine
US7686575B2 (en) * 2006-08-17 2010-03-30 Siemens Energy, Inc. Inner ring with independent thermal expansion for mounting gas turbine flow path components
US20110255959A1 (en) * 2010-04-15 2011-10-20 General Electric Company Turbine alignment control system and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1076991A (en) * 1991-11-05 1993-10-06 西门子公司 The structure for heat displacement of gap seal of turbine
US6733233B2 (en) * 2002-04-26 2004-05-11 Pratt & Whitney Canada Corp. Attachment of a ceramic shroud in a metal housing
CN101382087A (en) * 2007-08-23 2009-03-11 通用电气公司 Apparatus and method for reducing eccentricity and out-of-roundness in turbines
CN101892875A (en) * 2009-05-22 2010-11-24 通用电气公司 Active housing track control system and method

Also Published As

Publication number Publication date
JP2013256945A (en) 2013-12-26
EP2674580A1 (en) 2013-12-18
US20130330187A1 (en) 2013-12-12
CN103485844A (en) 2014-01-01
RU2013126491A (en) 2014-12-20

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