EP2806113A1 - An exhaust casing of a turbomachine and a method for assembling the exhaust casing into the turbomachine - Google Patents
An exhaust casing of a turbomachine and a method for assembling the exhaust casing into the turbomachine Download PDFInfo
- Publication number
- EP2806113A1 EP2806113A1 EP13169126.3A EP13169126A EP2806113A1 EP 2806113 A1 EP2806113 A1 EP 2806113A1 EP 13169126 A EP13169126 A EP 13169126A EP 2806113 A1 EP2806113 A1 EP 2806113A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust casing
- casing
- bearing housing
- damping element
- exhaust
- 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.)
- Withdrawn
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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
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
- F01D25/162—Bearing supports
- F01D25/164—Flexible supports; Vibration damping means associated with the bearing
-
- 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
- F01D25/30—Exhaust heads, chambers, or the like
-
- 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
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
-
- 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
Definitions
- the invention relates to an exhaust casing of a turbo-machine. More specifically, the invention relates to vibrations in the exhaust casing of the turbo-machine.
- a turbo-machine Whenever a turbo-machine is functional, it has a tendency to vibrate due to exciting forces on various parts of the turbo-machine. Such vibrations may be dangerous to the functioning of the turbo-machine and may lead to damage of turbine. More specifically, the vibrations of exhaust casing system may lead to malfunctioning, and even failure of rotor placed into bearing housing of the exhaust casing system. Available possible ways to avoid such vibration of exhaust casing is to employ checks through prior computer simulations, which are not that reliable, especially with various combinations of parts.
- the object of the invention is to manage vibrations of an exhaust casing system of a turbo-machine.
- the object of the invention is achieved by an exhaust casing system of turbo-machine of claim 1 and a method for assembling the exhaust casing into the turbo-machine according to claim 9.
- the exhaust casing system includes a bearing housing, an opening into the exhaust casing, and a housing damping element.
- the bearing housing includes bearings, and is mechanically coupled to a rotor of the turbo-machine.
- the opening allows access from an outer environment into the exhaust casing up to the bearing housing.
- the housing damping element elongates through the opening and mechanically couples a surface in the outer environment and a surface of the bearing housing.
- the housing damping element resistively compresses or decompresses whenever the exhaust casing vibrates along a direction substantially parallel to the elongation of damping element to mechanically couple the surface in the outer environment and the surface of the bearing housing. This helps to reduce vertical vibrations of the exhaust casing system.
- the opening provides access to a set of oil pipes leading to the bearing housing. This allows for usage of already available opening of exhaust casing system to be used for placing the housing damping element between the external environment and the bearing housing.
- the exhaust casing system includes a casing damping element which mechanically couples the surface in the outer environment and a part of the exhaust casing other than the bearing housing.
- the casing damping element resistively compresses or decompresses whenever the exhaust casing vibrates. This provides for a way to further dampen the vibrations of the exhaust casing.
- the part of the exhaust casing other than the bearing housing is an outer surface of the exhaust casing. This provides an easy way for coupling the surface in the outer environment and the part of the exhaust casing other than the bearing housing through the casing damping element. It also eases maintenance of the exhaust casing for replacing the casing damping element.
- the exhaust casing system includes a plurality of casing damping elements which mechanically couples the surface in the outer environment and the other part of the exhaust casing and resistively compresses or decompresses whenever the exhaust casing vibrates. Presence of couplings of the surface in the outer environment and the other part of the exhaust casing by multiples casing damping element further reduces the vibrations of the exhaust casing.
- the surface in the outer environment is a base frame of the turbo-machine.
- Creating mechanical coupling between a base frame of turbo-machine and the exhaust casing provides for reduction of vibrations of the exhaust casing without support from elements external to the turbo-machine.
- FIG 1 and FIG 2 together for describing a exhaust casing system of a turbo-machine.
- the exhaust casing 1 of a turbo-machine includes a bearing housing 2, an opening 5 into the exhaust casing 1 and a damping element 6.
- the bearing housing 2 includes bearings 3 and is mechanically coupled to a rotor 4 of the turbo-machine for allowing sliding of a shaft of the rotor 4 onto bearing surface.
- the opening 5 allows access to the housing element 6 from an outer environment into the exhaust casing 1 up to the bearing housing 2.
- the housing damping element 6 is assembled to the exhaust casing 1 by elongating through the opening 5 to mechanically couple a surface 7 in the outer environment and a surface of the bearing housing 2.
- the housing damping element 6 resistively compresses or decompresses whenever the exhaust casing 1 vibrates to providing damping effect to reduce vibrations of the exhaust casing 1.
- the surface 7 in the outer environment is a base frame of the turbo-machine.
- the surface 7 in the outer environment can be ground or platform on which the turb0-machine is placed.
- the turbo-machine While the turbo-machine is functional, it creates vibrations of exhaust casing 1. More specifically, vertical vibrations are required to be taken care of, as the vertical vibrations may cause dislocation of the rotor 4 or may lead to fracture of the rotor 4. To take care of the vertical vibrations, the housing damping element 6 compresses or decompresses, and damps vibrations whenever the exhaust casing 1 vibrates along a direction substantially parallel to the elongation of housing damping element 6 to mechanically couple the surface 7 in the outer environment and the surface of the bearing housing 2.
- openings 5 of the exhaust casing 1 can be used, like openings which allow oil pipes 8 to reach to the bearing housing 8 can also be used for allowing access to the housing damping element.
- another opening in the exhaust casing 1 can be created to allow access to the housing damping element 6 separately.
- a casing damping element 9 is also provided which mechanically couples the surface 7 in the outer environment and a part 10 of the exhaust casing 1 other than the bearing housing 2.
- the casing damping element 9 resistively compresses or decompresses whenever the exhaust casing 1 vibrates.
- the part 10 of the exhaust casing 1 other than the bearing housing 2 is an outer surface of the exhaust casing 1. More specifically, the outer surface of the exhaust casing lies at an inlet side 11 of the exhaust casing 1. In an alternate embodiment, the outer surface of the exhaust casing can lie on the exhaust side of the exhaust casing.
- the part 10 of the exhaust casing 1 need not be the outer surface of the exhaust casing; rather it can be any part internal to the exhaust casing.
- the exhaust casing 1 includes plurality of casing damping elements 9 which mechanically couple the outer surface 7 in the outer environment and the part 10 of the exhaust casing 1.
- the casing damping elements 9 resistively compresses or decompresses whenever the exhaust casing 1 vibrates. This further helps to dampen the vibrations of the exhaust casing 1.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
An exhaust casing (1) of a turbo-machine includes a bearing housing (2), an opening (5) and a housing damping element (6). The bearing housing (2) includes bearings (3); the bearing housing (2) mechanically couples to a rotor (4) of the turbo-machine. The opening (5) allows access from an outer environment into the exhaust casing (1) up to the bearing housing (2). The housing damping element (6) elongate through the opening (5) and mechanically couples a surface (7) in the outer environment and a surface of the bearing housing (2) and it resistively compresses or decompress whenever the exhaust casing (1) vibrates.
Description
- The invention relates to an exhaust casing of a turbo-machine. More specifically, the invention relates to vibrations in the exhaust casing of the turbo-machine.
- Whenever a turbo-machine is functional, it has a tendency to vibrate due to exciting forces on various parts of the turbo-machine. Such vibrations may be dangerous to the functioning of the turbo-machine and may lead to damage of turbine. More specifically, the vibrations of exhaust casing system may lead to malfunctioning, and even failure of rotor placed into bearing housing of the exhaust casing system. Available possible ways to avoid such vibration of exhaust casing is to employ checks through prior computer simulations, which are not that reliable, especially with various combinations of parts.
- The object of the invention is to manage vibrations of an exhaust casing system of a turbo-machine.
- The object of the invention is achieved by an exhaust casing system of turbo-machine of
claim 1 and a method for assembling the exhaust casing into the turbo-machine according toclaim 9. - According to an embodiment of the exhaust casing system, the exhaust casing system includes a bearing housing, an opening into the exhaust casing, and a housing damping element. The bearing housing includes bearings, and is mechanically coupled to a rotor of the turbo-machine. The opening allows access from an outer environment into the exhaust casing up to the bearing housing. The housing damping element elongates through the opening and mechanically couples a surface in the outer environment and a surface of the bearing housing. The housing damping element resistively compresses or decompresses whenever the exhaust casing vibrates along a direction substantially parallel to the elongation of damping element to mechanically couple the surface in the outer environment and the surface of the bearing housing. This helps to reduce vertical vibrations of the exhaust casing system.
- According to another embodiment of the exhaust casing system, wherein the opening provides access to a set of oil pipes leading to the bearing housing. This allows for usage of already available opening of exhaust casing system to be used for placing the housing damping element between the external environment and the bearing housing.
- According to yet another embodiment of the exhaust casing system, the exhaust casing system includes a casing damping element which mechanically couples the surface in the outer environment and a part of the exhaust casing other than the bearing housing. The casing damping element resistively compresses or decompresses whenever the exhaust casing vibrates. This provides for a way to further dampen the vibrations of the exhaust casing.
- According to one embodiment of the exhaust casing system, wherein the part of the exhaust casing other than the bearing housing is an outer surface of the exhaust casing. This provides an easy way for coupling the surface in the outer environment and the part of the exhaust casing other than the bearing housing through the casing damping element. It also eases maintenance of the exhaust casing for replacing the casing damping element.
- According to another embodiment of the exhaust casing system, wherein the outer surface of the exhaust casing lies at an exhaust side of the exhaust casing. It provides wholesome support for reducing vibrations of the exhaust casing. According to yet another embodiment of the exhaust casing system, the exhaust casing system includes a plurality of casing damping elements which mechanically couples the surface in the outer environment and the other part of the exhaust casing and resistively compresses or decompresses whenever the exhaust casing vibrates. Presence of couplings of the surface in the outer environment and the other part of the exhaust casing by multiples casing damping element further reduces the vibrations of the exhaust casing.
- According to one embodiment of the exhaust casing system, wherein the surface in the outer environment is a base frame of the turbo-machine. Creating mechanical coupling between a base frame of turbo-machine and the exhaust casing provides for reduction of vibrations of the exhaust casing without support from elements external to the turbo-machine.
-
FIG 1 shows front view of the exhaust casing system with damping elements. -
FIG 2 shows partial internal view of the exhaust casing system with damping elements. - The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
- Further we will discuss the
FIG 1 andFIG 2 together for describing a exhaust casing system of a turbo-machine. - The
exhaust casing 1 of a turbo-machine includes a bearinghousing 2, an opening 5 into theexhaust casing 1 and adamping element 6. - The bearing
housing 2 includesbearings 3 and is mechanically coupled to a rotor 4 of the turbo-machine for allowing sliding of a shaft of the rotor 4 onto bearing surface. Theopening 5 allows access to thehousing element 6 from an outer environment into theexhaust casing 1 up to the bearinghousing 2. Thehousing damping element 6 is assembled to theexhaust casing 1 by elongating through theopening 5 to mechanically couple asurface 7 in the outer environment and a surface of thebearing housing 2. Thehousing damping element 6 resistively compresses or decompresses whenever theexhaust casing 1 vibrates to providing damping effect to reduce vibrations of theexhaust casing 1. - The
surface 7 in the outer environment is a base frame of the turbo-machine. In an alternate embodiment thesurface 7 in the outer environment can be ground or platform on which the turb0-machine is placed. - While the turbo-machine is functional, it creates vibrations of
exhaust casing 1. More specifically, vertical vibrations are required to be taken care of, as the vertical vibrations may cause dislocation of the rotor 4 or may lead to fracture of the rotor 4. To take care of the vertical vibrations, thehousing damping element 6 compresses or decompresses, and damps vibrations whenever theexhaust casing 1 vibrates along a direction substantially parallel to the elongation ofhousing damping element 6 to mechanically couple thesurface 7 in the outer environment and the surface of the bearinghousing 2. - It is not required to create a separate opening for allowing access to the
housing damping element 6; rather already existingopenings 5 of theexhaust casing 1 can be used, like openings which allowoil pipes 8 to reach to the bearinghousing 8 can also be used for allowing access to the housing damping element. However, optionally another opening in theexhaust casing 1 can be created to allow access to thehousing damping element 6 separately. - For further reduction of the vibrations of the
exhaust casing 1, another damping aspect is introduced, i.e., acasing damping element 9 is also provided which mechanically couples thesurface 7 in the outer environment and apart 10 of theexhaust casing 1 other than the bearinghousing 2. Thecasing damping element 9 resistively compresses or decompresses whenever theexhaust casing 1 vibrates. Thepart 10 of theexhaust casing 1 other than the bearinghousing 2 is an outer surface of theexhaust casing 1. More specifically, the outer surface of the exhaust casing lies at aninlet side 11 of theexhaust casing 1. In an alternate embodiment, the outer surface of the exhaust casing can lie on the exhaust side of the exhaust casing. In yet alternate embodiment, thepart 10 of theexhaust casing 1 need not be the outer surface of the exhaust casing; rather it can be any part internal to the exhaust casing. - In an alternate embodiment, the
exhaust casing 1 includes plurality ofcasing damping elements 9 which mechanically couple theouter surface 7 in the outer environment and thepart 10 of theexhaust casing 1. Thecasing damping elements 9 resistively compresses or decompresses whenever theexhaust casing 1 vibrates. This further helps to dampen the vibrations of theexhaust casing 1.
Claims (15)
- An exhaust casing (1) of a turbo-machine comprising:- a bearing housing (2) comprising bearings (3), the bearing housing (2) is adapted to be mechanically coupled to a rotor (4) of the turbo-machine,- an opening (5) adapted to allow access from an outer environment into the exhaust casing (1) up to the bearing housing (2),- a housing damping element (6) adapted to elongate through the opening (5) to mechanically couple a surface (7) in the outer environment and a surface of the bearing housing (2) and to resistively compress or decompress whenever the exhaust casing (1) vibrates.
- The exhaust casing (1) according to the claim 1, wherein the housing damping element (6) is adapted to compress or decompress whenever the exhaust casing (1) vibrates along a direction substantially parallel to the elongation of housing damping element (6) to mechanically couple the surface (7) in the outer environment and the surface of the bearing housing (2).
- The exhaust casing (1) according to the claim 1 or 2, wherein the opening (5) provides access to oil pipes (8) leading to the bearing housing (2).
- The exhaust casing (1) according to any of the claims 1 to 3 comprising:- a casing damping element (9) adapted to mechanically couple the surface (7) in the outer environment and a part (10) of the exhaust casing (1) other than the bearing housing (2) and to resistively compress or decompress whenever the exhaust casing (1) vibrates.
- The exhaust casing (1) according to the claim 4, wherein the part (10) of the exhaust casing (1) other than the bearing housing (2) is an outer surface of the exhaust casing (1).
- The exhaust casing (1) according to the claim 5, wherein the outer surface of the exhaust casing lies at an exhaust side (11) of the exhaust casing (1).
- The exhaust casing (1) according to any of the claims 4 to 6 comprising:- a plurality of casing damping elements (9) adapted to mechanically couple the outer surface (7) in the outer environment and the part (10) of the exhaust casing (1) and to resistively compress or decompress whenever the exhaust casing (1) vibrates.
- The exhaust casing (1) according to any of the claims 1 to 7, wherein the surface (7) in the outer environment is a base frame of the turbo-machine.
- A method for assembling an exhaust casing (1) into a turbo-machine comprising:- providing a bearing housing (2) comprising bearings (3), mechanically coupling the bearing housing (2) to a rotor of the turbo-machine,- providing an opening (5) into the exhaust casing for allowing access from an outer environment into the exhaust casing (1) up to the bearing housing (2),- providing a housing damping element (6), elongating the housing damping element (6) from a surface (7) in the outer environment and a surface of the bearing housing (2) through the opening (5), mechanically coupling the surface (7) in the outer environment and the surface of the bearing housing (2) through the housing damping element (6) for resistively compressing or decompressing whenever the exhaust casing (1) vibrates.
- The method according to claim 9 comprising:- mechanically coupling the surface (7) in the outer environment and a part (10) of the exhaust casing (1) other than the bearing housing (1) by a casing damping element (9) for resistively compressing or decompressing whenever the exhaust casing (1) vibrates.
- The method according to the claim according to claim 10 comprising:- mechanically coupling the surface (7) in the outer environment and an outer surface of the exhaust casing (1) by the casing damping element (9) for resistively compressing or decompressing whenever the exhaust casing (1) vibrates.
- The method according to the claim according to claim 11 comprising:- mechanically coupling the surface (7) in the outer environment and the outer surface at an inlet side (11) of the exhaust casing (1) by the casing damping element (9) for resistively compressing or decompressing whenever the exhaust casing (1) vibrates.
- The method according to the claim according to claim 10 comprising:- mechanically coupling the surface (7) in the outer environment and the part of the exhaust casing (1) other than the bearing housing (2) by a plurality of casing damping element (9) for resistively compressing or decompressing whenever the exhaust casing (1) vibrates.
- The method according to any of the claims 10 to 12 comprising:- mechanically coupling a base frame (7) of the turbo-machine and the part (10) of the exhaust casing (1) other than the bearing housing (2) by the casing damping element (9) for resistively compressing or decompressing whenever the exhaust casing (1) vibrates.
- The method according to any of the claims 10 to 14 comprising:- mechanically coupling a base frame (7) of the turbo-machine and the bearing housing (2) by the housing damping element (6) for resistively compressing or decompressing whenever the exhaust casing (1) vibrates.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13169126.3A EP2806113A1 (en) | 2013-05-24 | 2013-05-24 | An exhaust casing of a turbomachine and a method for assembling the exhaust casing into the turbomachine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13169126.3A EP2806113A1 (en) | 2013-05-24 | 2013-05-24 | An exhaust casing of a turbomachine and a method for assembling the exhaust casing into the turbomachine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2806113A1 true EP2806113A1 (en) | 2014-11-26 |
Family
ID=48468182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13169126.3A Withdrawn EP2806113A1 (en) | 2013-05-24 | 2013-05-24 | An exhaust casing of a turbomachine and a method for assembling the exhaust casing into the turbomachine |
Country Status (1)
Country | Link |
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EP (1) | EP2806113A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3309367A1 (en) * | 2016-10-13 | 2018-04-18 | Doosan Heavy Industries & Construction Co., Ltd. | Gas turbine |
CN108561197A (en) * | 2017-12-22 | 2018-09-21 | 东方电气集团东方汽轮机有限公司 | Turbomachine Rotor support construction |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB739474A (en) * | 1954-03-15 | 1955-10-26 | Blackburn & Gen Aircraft Ltd | Improvements in or relating to gas turbine engines |
US2869941A (en) * | 1957-04-29 | 1959-01-20 | United Aircraft Corp | Turbine bearing support |
FR1437906A (en) * | 1964-06-24 | 1966-05-06 | United Aircraft Corp | Bearing support for gas turbomachines |
DE19842811A1 (en) * | 1998-09-18 | 1999-07-15 | Siemens Ag | Waste-steam outflow zone with end-bearing arrangement esp. for steam-turbine plant |
US6030176A (en) * | 1995-07-19 | 2000-02-29 | Siemens Aktiengesellschaft | Structural member for an exhaust-gas connection of a turbomachine, in particular a steam turbine, and set of at least two structural members |
US20100278465A1 (en) * | 2009-04-29 | 2010-11-04 | Steven Arlen Klusman | Compliant spherical bearing mount |
EP2261468A1 (en) * | 2008-03-28 | 2010-12-15 | Mitsubishi Heavy Industries, Ltd. | Gas turbine |
US20130064647A1 (en) * | 2011-09-09 | 2013-03-14 | Mitsubishi Heavy Industries, Ltd. | Gas turbine |
-
2013
- 2013-05-24 EP EP13169126.3A patent/EP2806113A1/en not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB739474A (en) * | 1954-03-15 | 1955-10-26 | Blackburn & Gen Aircraft Ltd | Improvements in or relating to gas turbine engines |
US2869941A (en) * | 1957-04-29 | 1959-01-20 | United Aircraft Corp | Turbine bearing support |
FR1437906A (en) * | 1964-06-24 | 1966-05-06 | United Aircraft Corp | Bearing support for gas turbomachines |
US6030176A (en) * | 1995-07-19 | 2000-02-29 | Siemens Aktiengesellschaft | Structural member for an exhaust-gas connection of a turbomachine, in particular a steam turbine, and set of at least two structural members |
DE19842811A1 (en) * | 1998-09-18 | 1999-07-15 | Siemens Ag | Waste-steam outflow zone with end-bearing arrangement esp. for steam-turbine plant |
EP2261468A1 (en) * | 2008-03-28 | 2010-12-15 | Mitsubishi Heavy Industries, Ltd. | Gas turbine |
US20100278465A1 (en) * | 2009-04-29 | 2010-11-04 | Steven Arlen Klusman | Compliant spherical bearing mount |
US20130064647A1 (en) * | 2011-09-09 | 2013-03-14 | Mitsubishi Heavy Industries, Ltd. | Gas turbine |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3309367A1 (en) * | 2016-10-13 | 2018-04-18 | Doosan Heavy Industries & Construction Co., Ltd. | Gas turbine |
US10352192B2 (en) | 2016-10-13 | 2019-07-16 | Doosan Heavy Industries Contruction Co., Ltd | Gas turbine |
CN108561197A (en) * | 2017-12-22 | 2018-09-21 | 东方电气集团东方汽轮机有限公司 | Turbomachine Rotor support construction |
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