WO2019160575A2 - Chauffage par induction pour l'assemblage et le démontage des composants dans un moteur à turbine - Google Patents

Chauffage par induction pour l'assemblage et le démontage des composants dans un moteur à turbine Download PDF

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Publication number
WO2019160575A2
WO2019160575A2 PCT/US2018/044949 US2018044949W WO2019160575A2 WO 2019160575 A2 WO2019160575 A2 WO 2019160575A2 US 2018044949 W US2018044949 W US 2018044949W WO 2019160575 A2 WO2019160575 A2 WO 2019160575A2
Authority
WO
WIPO (PCT)
Prior art keywords
hub
shaft
cable
induction
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.)
Ceased
Application number
PCT/US2018/044949
Other languages
English (en)
Other versions
WO2019160575A3 (fr
Inventor
Harry CHOHAN
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
Siemens Corp
Siemens Energy Inc
Original Assignee
Siemens AG
Siemens Corp
Siemens Energy Inc
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, Siemens Corp, Siemens Energy Inc filed Critical Siemens AG
Publication of WO2019160575A2 publication Critical patent/WO2019160575A2/fr
Publication of WO2019160575A3 publication Critical patent/WO2019160575A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
    • B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
    • B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/36—Power transmission arrangements between the different shafts of the gas turbine plant, or between the gas-turbine plant and the power user
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/50—Building or constructing in particular ways
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods

Definitions

  • Disclosed embodiments are generally related to turbine engines and in particular to assembly and disassembly of components within the turbine engines.
  • Gas turbine engines typically comprise a casing or cylinder for housing a compressor section, a combustion section, and a turbine section.
  • a supply of air is compressed in the compressor section and directed into the combustion section.
  • the compressed air enters the combustion inlet and is mixed with fuel.
  • the air/fuel mixture is then combusted to produce high temperature and high pressure (working) gas. This working gas then travels through the transition and into the turbine section of the turbine.
  • the turbine section typically comprises rows of vanes which direct the working gas to the airfoil portions of the turbine blades.
  • the working gas travels through the turbine section, causing the turbine blades to rotate, thereby turning a rotor attached thereto.
  • the rotor is also attached to the compressor section, thereby turning the compressor and may also be operatively connected to an electrical generator for producing electricity.
  • High efficiency of a combustion turbine is improved by heating the gas flowing through the combustion section to as high a temperature as is practical.
  • aspects of the present disclosure relate to assembly and/or disassembly of components within a gas turbine engine.
  • An aspect of the present disclosure may be a method for disassembly or assembly of a component in a gas turbine engine comprising, applying induction heating to a component; and removing or placing the component after increasing a temperature of the component due to the induction heating.
  • Another aspect of the present disclosure may be an induction apparatus for disassembly or assembly of a component in a gas turbine engine comprising: a cable mounted to a frame for applying induction heating to a component; a controller operably connected to the cable, wherein the controller controls current transmitted through the cable, wherein the transmission of current through the cable heats the component thereby permitting removal or placement of the component.
  • Still yet another aspect of the invention may be a method for removing or placing a shaft in a hub of the gas turbine engine comprising; applying induction heating to the hub, and removing or placing the shaft in the hub after increasing the hub’s temperature by induction heating.
  • Fig. l is a diagram of a hub and shaft
  • Fig. 2 is a top down schematic view of a hub and shaft.
  • Fig. 3 is a side view diagram of the hub and shaft.
  • Fig. 4 is a graph illustrating the induction heating.
  • Fig. 5 is an image and schematic of a hub and induction apparatus.
  • Fig. 6 is a diagram of the hub and induction apparatus. DETAILED DESCRIPTION
  • a power take off (PTO) hub extraction is difficult to perform.
  • the current procedures employ a thermal blanket and liquid nitrogen to overcome the interference designed in the component.
  • FIG. 1 illustrates a schematic view of a gas turbine component 5 that comprises a hub 10 and shaft 12.
  • the hub 10 is secured on a shaft 12 via an interference fit.
  • a temperature differential is created between the hub 10 and the shaft 12.
  • the temperature differential may be achieved by using a heating pad to heat up the hub 10 by transmitting thermal energy to the hub 10 via conduction, radiation and/or convection. Liquid nitrogen may be used to cool the shaft 12. The cooling and heating of each of the respective parts creates a temperature differential between the hub 10 and the shaft 12. The creation of the temperature differential permits the removal or placement of the hub 10 on the shaft 12 using a pressure tool that uses 10,000 lbs. of pressure.
  • the procedure described above may not create an adequate temperature differential between the hub 10 and the shaft 12 to adequately remove the interference between the hub 10 and the shaft 12.
  • the temperature differential at the interference between the hub 10 and the shaft 12 it is important to ensure the top flange 13 of the hub 10 is heated sufficiently and evenly to allow the expansion of the inner diameter of the hub 10.
  • the heating and cooling of the hub 10 and shaft 12 using conventional methods may occur unevenly. Extraction of the shafts 12 is often not possible due to significant interference between mated parts made of materials, such as JetheteTM.
  • the overall process may take from between 8-10 hours. Additionally the size of the component combined with the narrow tolerances and adhesive friction wear from service cooperation makes it almost impossible to expand and enable removal without difficulties. Removal of the shaft 12 from the hub 10 typically occurs without difficulties, and rarely is there a removal without some form of damage to the gas turbine component 5 that can impact performance and costs of the engine.
  • a temperature difference of 70 °C between PTO hub 10 and shaft 12 may be needed to achieve the desired interference expansion between the hub 10 and shaft
  • a temperature difference of 70 °C takes into consideration the average temperature at the mid-section of the top flange
  • Fig. 2 is a top down schematic view of the hub 10 and shaft 12.
  • thermocouples 15 and 16 In order to determine the temperature of the hub 10 and the shaft 12, the PTO hub 10 and shaft 12 can be fitted with eight type-N thermocouples. There are four hub thermocouples 15 and four shaft thermocouples 16. While eight thermocouples are discussed herein it should be understood that fewer or more thermocouples may be used in determining the temperatures of the hub 10 and the shaft 12. Indeed, there may be no need for thermocouples in those situations where control of the applied induction has already been determined to follow a prescribed pattern (i.e. applied power and time).
  • the hub thermocouples 15 and shaft thermocouples 16 are applied to the inner surfaces of the regions of the hub 10 and the shaft 12.
  • the placement of the hub thermocouples 15 and shaft thermocouples 16 is selected to minimize current induction that would be generated in the lead wires of the hub thermocouples 15 and shaft thermocouples 16 by induction caused by the cables 26.
  • the induction of current in the lead wires due to the cables 26 would introduce noise or voltage.
  • the introduction of noise or voltage would affect temperature readings taken by the thermocouples and possibly damage any equipment used in the controlling and monitoring of the hub thermocouples 15 and shaft thermocouples 16.
  • the temperature of the hub 10 can be increased rapidly while the temperature of the shaft 12 remains stable.
  • the temperature of the shaft 12 increases in a linear fashion.
  • a favourable delta T of 75 °C can be achieved at the interface of the hub 10 and the shaft 12 within 2 minutes of the application of induction heating. Because the heat is radiating from the hub outer surface 18 inwards towards the hub inner surface 17 when using the induction apparatus 25 (discussed in detail below with respect to Fig. 4), the average temperature of the hub 10 is in fact higher than that which is measured by the hub thermocouples 15 and the shaft thermocouples 16. This means the expansion of the hub 10 is greater than that which would be interpreted from simply considering the readings from the hub thermocouples 15 and the shaft thermocouples 16.
  • the actual average temperature of the shaft 12 is in fact lower than the reading of the shaft thermocouple 16 and the actual temperature delta is generally more favourable than interpretation based on the readings from the hub thermocouples 15 and the shaft thermocouples 16.
  • the timing and application of the induction energy to the hub 10 can be determined.
  • the data may be used to establish a predetermined application of induction energy to the hub 10 so that it can efficiently and evenly establish a temperature differential that will permit removal of the shaft 12 from the hub 10 without damaging the respective components.
  • Fig. 3 is a schematic side view of the hub 10 and the shaft 12.
  • the hub thermocouples 15 and the shaft thermocouples 16 are shown located at the hub inner surface 17.
  • the hub thermocouples 15 and the shaft thermocouples 16 are used to measure the temperatures of the hub 10 and the shaft 12. The measurement of the temperatures is used in order to accurately control the heating of the hub 10.
  • the hub thermocouples 15 and the shaft thermocouples 16 provide data to a controller 30 (shown below with respect to Fig. 6).
  • the controller 30 takes the data supplied to it in order to control the heating of the hub 10 for removal or installation of the shaft 12.
  • the controller 30 takes the data and in response to the received data and adjusts the application of current to the cables.
  • the controller 30 may also have a predetermined schedule for the control of the induction heating so as to efficiently provide induction heating.
  • thermocouples 15 and the shaft thermocouples 16 are shown located at the hub inner surface 17 and the shaft outer surface 19 they may be located at other locations on the hub 10 and the shaft 12. However the locations illustrated are preferred due to potential interferences that may occur due to process of induction. When located at other locations, their locations may be taken into account in order to effectively control the application of induction heating. Furthermore, while the instant invention is shown having eight thermocouples there may be more or fewer depending on the needs and subsequent accuracy desired. Additionally while thermocouples are shown, there does not need to be thermocouples. The thermocouples enable measurement of the heat so as to more accurately control the application of induction heating.
  • Fig. 4 is a graph that illustrates the increase of temperature and subsequent temperature differential caused by the induction heating.
  • Line 101 represents the temperature increase of top portion of the shaft 12.
  • Line 102 represents the bottom portion of the shaft 12.
  • Line 103 represents the bottom portion of the hub 10.
  • Line 104 represents the top portion of the hub 10. The graph illustrates how the temperature of the hub 10 increases in a more rapid fashion than the temperature of the shaft 12. This temperature differential allows the smooth removal of the shaft 12 from the hub 10 because the interference fit is overcome.
  • the induction apparatus 25 comprises a frame 24 that has a cable 26 attached to it so that the cable forms an induction coil within the frame 24.
  • a controller 30, shown in the Fig. 6 schematic, is operably connected to the frame 24 and the cable 26.
  • the cable 26 is wound and attached to the frame 24 in such a way that when current runs through the cable 26, induction heating occurs in the hub 10.
  • the frame 24
  • the frame 24 is shaped and sized so as to fit around the hub 10 and accommodate the cable 26.
  • the frame 24 may be made of fiberglass composite panels designed for electrical and thermal insulation.
  • Preferably the frame 24 may have handles so that they can be positioned on the hub 10 with ease.
  • the frame 24 and the cable 25 are secured in place.
  • the cable 26 is preferably a dry insulated cable.
  • the insulation for the cable is preferably a fabric/glass.
  • the cable 26 is preferably wound around the frame 24 ten times. The cable 26 is wound in this fashion in order to provide induction heating to the hub 10. However, it should be understood that it may be wound around more or less depending on the desired induction.
  • the controller 30 of the induction apparatus 25 takes the data from hub thermocouples 15 and the shaft thermocouples 16 so as to control the rate of induction heat applied to the hub 10.
  • the controller 30 can apply the current through the cable 26 reducing it or increasing it as needed.
  • the controller 30 may comprise a processor and memory so as to process and store the logic for controlling the induction apparatus 25.
  • the controller 30 may be pre-programmed to transmit the current through the cables 26 at the proper power and rate to heat the hub 10 to an appropriate temperature differential.
  • the proposed induction process provides rapid and uniform heating to the gas turbine component 5.
  • the process provides the best conditions for extracting a shaft 12 from the hub 10, in this instance a M08 hub.
  • Benefits associated with the process are that no liquid nitrogen required, which saves additional costs.
  • Another benefit is saving time by not needing to perform the intricate heating and cooling process.
  • Still another benefit is saving time by not needing to perform unnecessary repairs since there will be no damage on the PTO hub 10 and shaft 12. Therefore there is no scrap or repair needed and no replicas/lab analysis required.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)

Abstract

L'invention concerne un composant d'un moteur à turbine à gaz qui est assemblé ou démonté en utilisant le chauffage par induction. Le chauffage par induction est appliqué au composant afin de créer un différentiel de température suffisant qui permet la dépose ou la pose du composant.
PCT/US2018/044949 2017-08-02 2018-08-02 Chauffage par induction pour l'assemblage et le démontage des composants dans un moteur à turbine Ceased WO2019160575A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762540301P 2017-08-02 2017-08-02
US62/540,301 2017-08-02

Publications (2)

Publication Number Publication Date
WO2019160575A2 true WO2019160575A2 (fr) 2019-08-22
WO2019160575A3 WO2019160575A3 (fr) 2019-10-17

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PCT/US2018/044949 Ceased WO2019160575A2 (fr) 2017-08-02 2018-08-02 Chauffage par induction pour l'assemblage et le démontage des composants dans un moteur à turbine

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WO (1) WO2019160575A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111734495A (zh) * 2020-05-29 2020-10-02 中国航发沈阳发动机研究所 一种止口过盈配合的转子压装方法
CN112475781A (zh) * 2020-11-23 2021-03-12 苏州宏创高频加热设备有限公司 一种定子热装配生产工艺用辅助装置
CN113478172A (zh) * 2021-07-08 2021-10-08 哈尔滨电气动力装备有限公司 中型屏蔽电机推力盘热装配拆卸工艺
CN117798598A (zh) * 2023-12-28 2024-04-02 河北鑫泰轴承锻造有限公司 一种碾扩芯轴与轴套拆卸方法

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JPS5426144U (fr) * 1977-07-26 1979-02-20
US4567649A (en) * 1983-05-04 1986-02-04 General Electric Company System for heating, disassembly, handling and reassembly of a turbine rotor
DE19532848A1 (de) * 1995-09-06 1997-03-13 Abb Patent Gmbh Verfahren und Vorrichtung zur Montage und Demontage von Rotorkappen von Generatoren
US7786415B2 (en) * 2005-06-03 2010-08-31 Illinois Tool Works Inc. Induction heating system having multiple temperature input control
RU2388584C2 (ru) * 2008-06-16 2010-05-10 ООО Научно-производственное предприятие "Курай" Устройство для индукционной разборки прессового соединения вала с рабочим колесом ротора паровой турбины, имеющим лопатки
US20130341320A1 (en) * 2011-01-14 2013-12-26 Shawcor Ltd. Induction heating apparatus for pipeline connections
EP2789797B1 (fr) * 2013-04-08 2018-08-08 Ansaldo Energia Switzerland AG Rotor
DE102014105164A1 (de) * 2014-04-11 2015-01-15 Maschinenfabrik Köppern GmbH & Co KG Verfahren und Vorrichtung zur Demontage und Montage einer Ringbandage

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111734495A (zh) * 2020-05-29 2020-10-02 中国航发沈阳发动机研究所 一种止口过盈配合的转子压装方法
CN111734495B (zh) * 2020-05-29 2022-07-29 中国航发沈阳发动机研究所 一种止口过盈配合的转子压装方法
CN112475781A (zh) * 2020-11-23 2021-03-12 苏州宏创高频加热设备有限公司 一种定子热装配生产工艺用辅助装置
CN113478172A (zh) * 2021-07-08 2021-10-08 哈尔滨电气动力装备有限公司 中型屏蔽电机推力盘热装配拆卸工艺
CN113478172B (zh) * 2021-07-08 2022-06-14 哈尔滨电气动力装备有限公司 中型屏蔽电机推力盘热装配拆卸工艺
CN117798598A (zh) * 2023-12-28 2024-04-02 河北鑫泰轴承锻造有限公司 一种碾扩芯轴与轴套拆卸方法

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