EP0914543B1 - Turbinenanlage mit schubelement sowie schubelement - Google Patents
Turbinenanlage mit schubelement sowie schubelement Download PDFInfo
- Publication number
- EP0914543B1 EP0914543B1 EP97935458A EP97935458A EP0914543B1 EP 0914543 B1 EP0914543 B1 EP 0914543B1 EP 97935458 A EP97935458 A EP 97935458A EP 97935458 A EP97935458 A EP 97935458A EP 0914543 B1 EP0914543 B1 EP 0914543B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- turbine
- axial
- expansion
- component
- expansion component
- 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.)
- Expired - Lifetime
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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
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
-
- 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
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/26—Double casings; Measures against temperature strain in casings
Definitions
- the invention relates to a turbine system, in particular one Steam turbine plant with at least two partial turbines, the each a turbine runner extending along a major axis has, the turbine rotor rigid with each other are connected.
- Each turbine section has one of the guide vanes receiving inner housing, at least one of the inner housing is displaceable in the axial direction. For one axial displacement of this inner housing is a thermal expanding thrust element provided.
- the invention relates still a thrust element in itself.
- DE 35 22 916 A1 describes a turbo set with at least one an outer housing and an inner housing coaxial therewith Low pressure turbine part and with at least one coaxial and arranged upstream of the low-pressure turbine section High-pressure and / or medium-pressure partial turbine described.
- the Shafts of the sub-turbines are rigidly mutually into a shaft train coupled. Is upstream of the low pressure turbine an axial bearing for the shaft train, which a Defined reference plane, of which the axial shaft expansion and -shift takes its exit.
- the inner case is by means of thrust-transmitting coupling rods to the axially movable supported end of an axially adjacent sub-turbine housing or connected to a turbine bearing housing.
- the Coupling rods are by means of a wall of the outer housing also sealing elements which enable limited transverse movement led out heat-mobile and vacuum-tight.
- a turbine bearing upstream of the low-pressure partial turbine defines a second reference plane, of which the axial Expansion and displacement of that supported on this turbine bearing Turbine housing and the coupled to it Part turbine housing take their exit. This is done an axial displacement of the shaft train and the turbine section on practically the same axial elongation and in in the same direction, with neighboring running and The guide vane rings only have minimal axial play.
- the thrust transmission by means of the coupling rods is in the Area of thrust-transmitting turbine bearings.
- the coupling rods structurally combined with a horizontally heat-moveable claw bearing of the inner casing of the low pressure turbine.
- the claw arms of the inner housing extend parallel to the shaft Direction and lie with slidable wings and guide surfaces on the supports of the associated bearing housing on.
- the coupling rods are in the area of the turbine bearings non-positively coupled with the claw arms, in particular is a membrane seal for a vacuum-tight bushing with an outer ring flange on an end face of the The outer casing of the low-pressure turbine section and with an inner one Ring flange on a turbine bearing housing section is vacuum-tight connected.
- the arrangement of the sealing elements between Seats on the outer housing end wall and on the bearing housing that is, only a small relative displacement between parts, conditioned that the larger heat displacements of the inner casing are decoupled from the sealing elements.
- DE-AS 1 216 322 describes a steam or gas turbine with several coaxially arranged one behind the other Partial turbines, the shafts of which are rigidly coupled and at least one of whose housings is axially displaceable and coupled with a stationary turbine section or bearing block is.
- the turbine low pressure housings each exist from an outer and an inner housing. It takes place a clutch of the inner casing of the low pressure turbine with an adjacent turbine section or bearing block through a linkage that runs through the wall of the outer case is steam-tight and heat-moveable.
- the linkage can be a single rod in the outer casing wall thanks to an axially and radially flexible bellows is sealed.
- the linkage can continue to consist of three axially lined up, hinged rods exist, the middle in a sleeve of the outer housing wall is axially movable with a sliding fit.
- Through one Linkage should be an axial displacement of the housing, due to the axial play between the rotor and the housings is kept as constant as possible.
- To the size of the Changing the axial play is a change in the length of the boom possible by changing its temperature. This Temperature change is caused by an additional heat load the boom using steam or liquid carried out.
- the expansion tubes are via respective compensators with the corresponding External casings of the low-pressure partial turbines connected, see above that the absolute expansion of the system from inner casings and Coupling rods are taken up by the compensators got to.
- To maintain a constant between the stretching of the Turbine rotor and the system of inner housing and coupling rod to ensure is in a predetermined manner Add steam to the expansion tubes. This steam must either em steam process taken or made available separately become.
- There is also a need for regulation and one Monitoring system which, depending on the operating state of the Steam turbines use the expansion tubes to compensate for the axial play required steam is supplied.
- the object of the invention is to provide a turbine system, in the simple way, especially without expensive Control and monitoring systems, an axial play between Runner and inner housing below a predeterminable value remains.
- Another object of the invention is to provide a Corresponding thrust element to reduce the axial play between the turbine rotor and the inner casing of a turbine system specify.
- a thermal expanding thrust element which is a first Strain component and a second stretch component that are connected to one another via a coupling component.
- This Coupling component effects on mechanical and / or hydraulic Way an axial displacement of the second expansion component, which is greater than an axial displacement and / or axial thermal expansion of the first expansion component.
- the coupling element is preferably a mechanical lever.
- This lever is rotatable about a fixed point, the first Expansion component and the second expansion component on a respective one Connection point also rotatably connected to the lever are.
- the distance of the second junction from the fixed point is greater than the distance between the first connection point from the fixed point.
- a postponement of the first Junction caused by thermal expansion and / or a displacement of the first expansion component thus a rotation of the mechanical lever around its fixed point. Since the lever arm of the second expansion component, i.e. the Distance between second connection point and fixed point, is larger than the lever arm of the first expansion component the mechanical lever an axial displacement of the second expansion component, which is rectified and larger than the axial displacement of the first joint.
- a coupling component that is based on mechanical and / or hydraulic Way a reinforcement of the axial displacement in the same direction and / or axial expansion of the first expansion component causes, is constructively simple to implement, does not require any complicated monitoring and control device and none Steam supply via additional lines. With a such coupling component is thus low in construction and operational effort a reduction in the axial play between Guide blades and blades of a turbine plant achieved, which increases the efficiency of the turbine system can be.
- the thrust element is preferably together with a support of a bearing supporting the inner housing through a seal of an outer housing surrounding the inner housing.
- the seal preferably has an axial Direction of the expandable bellows.
- an axial expansion joint comprising the Thrust element with displacement amplifier (lever), an inner housing or several inner housings and, if necessary, push elements without displacement amplifier (coupling rods), and the interconnected turbine rotors have a common one axial fixed point.
- This axial fixed point is at one Expansion joint consisting of the outer casing of a medium-pressure turbine and inner casing of two or more low-pressure partial turbines preferably one in the axial direction in front of all Part turbines arranged, the storage of the outer housing the turbine bearing serving the medium-pressure partial turbine.
- the on a push element to reduce different axial stretch between two independently along a main axis of expandable components, especially turbine rotors and inner casing of a turbine plant, directed Task is achieved by a thrust element with a first expansion component, a second expansion component and a coupling component solved.
- the coupling component is preferably a um a fixed point rotatable mechanical lever at which the first Expansion component and the second expansion component on the same Side of the lever can be rotated at a respective connection point are connected.
- the second link is from that Fixed point further apart than the first connection point. This results from the leverage in the event of displacement the first junction a displacement gain the second connection point, which is thus in the axial direction is moved further than the first connection point.
- the Thrust element can also be a hydraulic displacement amplifier have, for example formed by yourself hydraulic channel tapering along the main axis, at the The first expansion component and the second end each Connect the expansion component.
- a postponement of the first Expansion component in the direction of the tapering of the hydraulic channel causes a displacement of an incompressible arranged therein Hydraulic fluids in the tapered part. Because of the constant volume thus penetrates the hydraulic fluid further into the tapered part than through the first Expansion component was displaced. This creates one Displacement gain through the incompressible hydraulic fluid.
- the first figure 1 shows a steam turbine system 1 with one behind the other High-pressure sub-turbine arranged along a main axis 4 23, medium-pressure turbine section 2 and three essentially identical Low-pressure turbines 3a, 3b, 3c shown.
- the Low-pressure partial turbines 3a, 3b, 3c are fluidically through a steam supply 24 to the medium-pressure turbine 2 connected.
- the medium-pressure turbine section 2 has an outer casing 22 on.
- Each low-pressure turbine part 3a, 3b, 3c has a respective inner housing 8a, 8b, 8c and the inner housing 8a, 8b, 8c surrounding outer housing 14. Any inner case 8a, 8b, 8c carries the guide vanes 6 for low-pressure steam application.
- each inner case 8a, 8b, 8c is a respective one extending along the main axis 4 Turbine rotor 5 arranged, the low-pressure blades 27 wears.
- the medium-pressure turbine section 2 has Inner housing 7 on. Between the medium pressure turbine section 2 and the first low-pressure turbine part 3a and between the is adjacent low-pressure partial turbines 3a, 3b, 3c one bearing 15 each. This camp 15 serves both the storage of the turbine rotor 5 and the respective inner housing 8a, 8b, 8c. Between the high pressure turbine section 23 and the medium-pressure turbine section 2 is also a bearing 15a to support the turbine runner of these sub-turbines 2, 23 intended.
- a respective one Coupling rod 9a connects the medium-pressure turbine section 2 with the first low-pressure turbine part 3a and each other adjacent inner casing 8a, 8b, 8c of the low-pressure turbine parts 3a, 3b, 3c with each other.
- the outer housing 22, the inner housing 8a, 8b, 8c and the coupling rods connecting them 9a, 21 form an expansion joint, which is at exposure to hot steam axially towards the Main axis 4 expands.
- This stretch bond formed in this way has a fixed point 20, which is on the bearing 15a between the high pressure turbine 23 and medium-pressure turbine part 2 is located.
- the Magnitude of thermal expansion calculated from this fixed point 20 along the major axis 4 is through the stretch line 25 shown.
- a corresponding strain line 26 of the rigid interconnected turbine rotor 5 of the medium-pressure sub-turbine 2 and the low-pressure turbine section 3a, 3b, 3c also shown.
- Thrust element 9 With an increase in displacement an inner casing 8a, 8b, 8c of a low-pressure turbine part 3a, 3b, 3c, such a difference in elongation can be clearly seen can be reduced by a predeterminable value.
- On such thrust element 9 is a replacement for a coupling rod 9a between the medium-pressure turbine section 2 and the first Low-pressure turbine part 3a and between each adjacent Low-pressure turbines 3a, 3b, 3c can be arranged.
- Preferably it is between the last two low pressure turbines 8b, 8c arranged.
- the thrust element 9 has one rod-shaped first expansion component 10a and one likewise essentially rod-shaped expansion component 10b on.
- expansion components 10a, 10b are via a coupling component 11 hinged together.
- the coupling component 3 is a mechanical lever that is rotatable about a fixed point 12.
- connection point 13a, 13b is each of the expansion components 10a, 10b through not shown pins rotatable with the expansion component 11 slidably connected in the direction of the main axis 4.
- the connection point 13a is closer to the fixed point 12 as the junction 13b.
- the connection point 13a lies between the connection point 13b and the fixed point 12, so that a displacement of the connection point 13a in the direction of the main axis 4 a larger displacement of the Connection point 13b in the direction of the main axis 4 conditionally.
- the expansion components 10a, 10b penetrate a respective bearing 15 and are together with a respective support area 28b, 28c through the respective outer housing 14 of the corresponding one Low-pressure turbine 3b, 3c out.
- This implementation takes place gastight by means of a respective seal 16, the seal 16 one in the direction of the main axis 4th has expandable sealing bellows 18.
- On the support 28a lies the inner housing 8b, in which the expansion component 10a is firmly screwed in. Accordingly lies on the support 28b, the inner housing 8c, and the expansion component 10b into a corresponding claw 17 of this inner housing 8c screwed tight.
- connection points 13a, 13b to the fixed point 12 is a corresponding displacement gain through the coupling component 11 adjustable by a predeterminable value.
- the coupling component 11 thus realizes simple construction and largely maintenance-free way a displacement gain without a complex regulation, review and pipe system, as is the case with a displacement gain necessary by increasing the temperature due to steam would.
- the invention is characterized by a thrust element in one Turbine system with several partial turbines, through which mechanical and / or hydraulic way a displacement gain is achieved.
- the thrust element a coupling component that represents a mechanical lever, on the articulated two push rods with different but lying on the same side in relation to a fixed point Has lever arms.
- One generated in the axial direction Displacement amplification of the displacement of an inner housing a partial turbine allows the axial play to be reduced between the blades of a turbine rotor and the Guide vanes of the inner casing.
- the use of essentially identical inner housings also Increase the efficiency of the entire turbine system.
- the turbine system is a steam turbine system with a high-pressure sub-turbine, a medium-pressure sub-turbine and two or more, in particular three, low-pressure partial turbines.
- a push element is suitable also to reduce the axial play in a gas turbine system with several sub-turbines.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Burglar Alarm Systems (AREA)
- Geophysics And Detection Of Objects (AREA)
- Radar Systems Or Details Thereof (AREA)
- Control Of Turbines (AREA)
- Switches With Compound Operations (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Description
- FIG 1
- einen Längsschnitt durch eine Dampfturbinenanlage,
- FIG 2
- einen Längsschnitt durch ein Lager zwischen zwei Niederdruck-Teilturbinen mit einem Schubelement und
- FIG 3
- eine Draufsicht des Schubelementes gemäß FIG 2.
Claims (7)
- Turbinenanlage (1), insbesondere Dampfturbinenanlage, mit zumindest zwei Teilturbinen (2,3a,3b,3c), deren jede einen sich entlang einer Hauptachse (4) erstreckenden Turbinenläufer (5), welche Turbinenläufer (5) starr miteinander verbunden sind, und ein die Leitschaufeln (6) aufnehmendes Innengehäuse (8a,8b,8c) aufweist,
wobei zumindest eines der Innengehäuse (8a,8b,8c) in axialer Richtung verschieblich ist und für eine axiale Verschiebung dieses Innengehäuses (8a,8b,8c) ein sich thermisch ausdehnendes Schubelement (9) vorgesehen ist,
dadurch gekennzeichnet , daß das Schubelement (9) eine erste Dehnkomponente (10a) und eine zweite Dehnkomponente (10b) aufweist, die über eine Koppelkomponente (11) miteinander verbunden sind, wobei die Koppelkomponente (11) mechanisch und/oder hydraulisch eine axiale Verschiebung der zweiten Dehnkomponente (10b) größer als eine thermische Dehnung und/oder axiale Verschiebung der ersten Dehnkomponente (10a) bewirkt. - Turbinenanlage (1) nach Anspruch 1, wobei das Koppelelement (11) ein um einen Fixpunkt (12) drehbarer mechanischer Hebel ist, mit dem die erste Dehnkomponente (10a) und die zweite Dehnkomponente (10b) an einer jeweiligen Verbindungsstelle (13a,13b) drehbar verbunden sind, und die zweite Verbindungsstelle (13b) von dem Fixpunkt (12) weiter beabstandet ist als die erste Verbindungsstelle (13a).
- Turbinenanlage (1) nach einem der vorhergehenden Ansprüche, bei der zumindest eine mit dem Schubelement (9) verbundene Teilturbine (3a,3b,3c) ein das Innengehäuse (8a,8b,8c) umgebendes Außengehäuse (14) aufweist, wobei das Schubelement (9) sowie ein Auflager (28a,28b) eines das Innengehäuse (8a,8b) tragenden Lagers (15) gemeinsam durch eine Dichtung (16) geführt sind.
- Turbinenanlage (1) nach einem der vorhergehenden Ansprüche, bei der ein das Schubelement (9) umfassender axialer Dehnungsverbund und die untereinander verbundenen Turbinenläufer (5) einen gemeinsamen axialen Festpunkt (20) aufweisen.
- Turbinenanlage (1) nach einem der vorhergehenden Ansprüche mit einer Mitteldruck-Teildampfturbine (2) und zumindest zwei Niederdruck-Teildampfturbinen (3a,3b), die entlang der Hauptachse (4) angeordnet sind, wobei die Innengehäuse (8a,8b) der Niederdruck-Teildampfturbinen (3a,3b) mit dem Schubelement (9) verbunden sind.
- Turbinenanlage (1) nach Anspruch 5, bei der die Mitteldruck-Teildampfturbine (2) ein Außengehäuse (22) hat, das über eine Schubverbindung (21) mit dem Innengehäuse (8a) der in axialer Richtung nachgeordneten Niederdruck-Teildampfturbine (3a) verbunden ist, und ein mit dem Außengehäuse (22) verbundenes Lager (15a) den axialen Festpunkt (20) für eine axiale thermische Ausdehnung bildet.
- Schubelement (9) zur Verringerung unterschiedlicher axialer Dehnungen zwischen zwei unabhängig voneinander entlang einer Hauptachse (4) ausdehnbarer Komponenten, insbesondere Turbinenläufer (5) und Innengehäusen (7,8a,8b,8c) einer Turbinenanlage, mit einer ersten Dehnkomponente (10a), einer zweiten Dehnkomponente (10b) und einem Koppelelement (11), wobei das Koppelelement (11) ein um einen Fixpunkt (12) drehbarer mechanischer Hebel ist, mit dem die erste Dehnkomponente (10a) und die zweite Dehnkomponente (10b) an einer jeweiligen Verbindungsstelle (13a,13b) drehbar verbunden sind, und die zweite Verbindungsstelle (13b) von dem Fixpunkt (12) weiter beabstandet ist als die erste Verbindungsstelle (13a).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19629933A DE19629933C1 (de) | 1996-07-24 | 1996-07-24 | Turbinenanlage mit Schubelement sowie Schubelement |
DE19629933 | 1996-07-24 | ||
PCT/DE1997/001546 WO1998004810A1 (de) | 1996-07-24 | 1997-07-22 | Turbinenanlage mit schubelement sowie schubelement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0914543A1 EP0914543A1 (de) | 1999-05-12 |
EP0914543B1 true EP0914543B1 (de) | 2001-10-04 |
Family
ID=7800739
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97935458A Expired - Lifetime EP0914543B1 (de) | 1996-07-24 | 1997-07-22 | Turbinenanlage mit schubelement sowie schubelement |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0914543B1 (de) |
JP (1) | JP3898229B2 (de) |
CN (1) | CN1091209C (de) |
AT (1) | ATE206502T1 (de) |
DE (2) | DE19629933C1 (de) |
ES (1) | ES2165623T3 (de) |
PT (1) | PT914543E (de) |
RU (1) | RU2185516C2 (de) |
WO (1) | WO1998004810A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11460037B2 (en) | 2019-03-29 | 2022-10-04 | Pratt & Whitney Canada Corp. | Bearing housing |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1249579A1 (de) | 2001-04-11 | 2002-10-16 | Siemens Aktiengesellschaft | Turbinenanlage, inbesondere Dampfturbinenanlage |
JP4175859B2 (ja) * | 2002-10-10 | 2008-11-05 | 株式会社東芝 | 蒸気タービン軸受装置 |
JP2004245187A (ja) * | 2003-02-17 | 2004-09-02 | Toshiba Corp | ターボ機械の非接触シール装置およびこれを用いた蒸気タービン設備 |
DE502005003309D1 (de) * | 2005-04-05 | 2008-04-30 | Siemens Ag | Verschiebesystem, Turbinenpaar, Turbinenanordnung und Verfahren zur Weitergabe einer Positionsänderung zwischen zwei Turbinen |
CN101608556B (zh) * | 2008-06-19 | 2011-12-14 | 上海电气电站设备有限公司 | 一种大型落地低压内缸 |
US9441500B2 (en) | 2011-03-31 | 2016-09-13 | Mitsubishi Heavy Industries, Ltd. | Steam turbine casing position adjusting apparatus |
EP2554801A1 (de) * | 2011-08-02 | 2013-02-06 | Siemens Aktiengesellschaft | Turbinensystem umfassend eine Stößelstangenanordnung zwischen zwei Gehäusen |
JP6000140B2 (ja) * | 2013-01-23 | 2016-09-28 | 三菱日立パワーシステムズ株式会社 | 位置調整機構及び蒸気タービン |
EP2821593A1 (de) * | 2013-07-04 | 2015-01-07 | Alstom Technology Ltd | Verfahren und Vorrichtung zur Beeinflussung eines Dampfturbinenaxialspiels |
EP2910741A1 (de) * | 2014-02-24 | 2015-08-26 | Siemens Aktiengesellschaft | Beheizbare Schubstange für eine Dampfturbine |
JP6162667B2 (ja) * | 2014-09-09 | 2017-07-12 | 株式会社神戸製鋼所 | 回転機ユニット |
CN106837432B (zh) * | 2015-12-03 | 2019-10-11 | 上海电气电站设备有限公司 | 汽轮机胀差控制结构及控制方法 |
CN113864006B (zh) * | 2020-06-30 | 2024-06-18 | 上海电气电站设备有限公司 | 一种汽轮机膨胀滑销系统及汽轮机 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1216322B (de) * | 1962-05-30 | 1966-05-12 | Creusot Forges Ateliers | Dampf- oder Gasturbine mit mehreren, koaxial hintereinander angeordneten Teilturbinen |
GB1145612A (en) * | 1966-04-12 | 1969-03-19 | Licentia Gmbh | Improvements relating to steam turbines |
DE3522916A1 (de) * | 1985-06-27 | 1987-01-08 | Kraftwerk Union Ag | Turbosatz mit wenigstens einer, ein aussengehaeuse und ein dazu koaxiales innengehaeuse aufweisenden niederdruck-teilturbine und mit hochdruck- und/oder mitteldruck-teilturbine |
US5051061A (en) * | 1988-12-23 | 1991-09-24 | Asea Brown Boveri Ltd. | Multi-cylinder steam turbine set |
FR2719627B1 (fr) * | 1994-05-03 | 1996-06-14 | Gec Alsthom Electromec | Unité de production d'énergie électrique à cycle combiné comportant une turbine à gaz et une turbine à vapeur à plusieurs modules. |
-
1996
- 1996-07-24 DE DE19629933A patent/DE19629933C1/de not_active Expired - Fee Related
-
1997
- 1997-07-22 EP EP97935458A patent/EP0914543B1/de not_active Expired - Lifetime
- 1997-07-22 PT PT97935458T patent/PT914543E/pt unknown
- 1997-07-22 AT AT97935458T patent/ATE206502T1/de not_active IP Right Cessation
- 1997-07-22 ES ES97935458T patent/ES2165623T3/es not_active Expired - Lifetime
- 1997-07-22 JP JP50838098A patent/JP3898229B2/ja not_active Expired - Fee Related
- 1997-07-22 WO PCT/DE1997/001546 patent/WO1998004810A1/de active IP Right Grant
- 1997-07-22 CN CN97196568A patent/CN1091209C/zh not_active Expired - Fee Related
- 1997-07-22 RU RU99103641/06A patent/RU2185516C2/ru not_active IP Right Cessation
- 1997-07-22 DE DE59704804T patent/DE59704804D1/de not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11460037B2 (en) | 2019-03-29 | 2022-10-04 | Pratt & Whitney Canada Corp. | Bearing housing |
Also Published As
Publication number | Publication date |
---|---|
RU2185516C2 (ru) | 2002-07-20 |
DE19629933C1 (de) | 1997-09-04 |
DE59704804D1 (de) | 2001-11-08 |
CN1091209C (zh) | 2002-09-18 |
EP0914543A1 (de) | 1999-05-12 |
ES2165623T3 (es) | 2002-03-16 |
PT914543E (pt) | 2002-03-28 |
JP2001508146A (ja) | 2001-06-19 |
JP3898229B2 (ja) | 2007-03-28 |
WO1998004810A1 (de) | 1998-02-05 |
CN1225705A (zh) | 1999-08-11 |
ATE206502T1 (de) | 2001-10-15 |
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