CN116181417A - Device and method for heat treating a rotor or a rotor disk of a turbomachine - Google Patents

Device and method for heat treating a rotor or a rotor disk of a turbomachine Download PDF

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Publication number
CN116181417A
CN116181417A CN202211488680.7A CN202211488680A CN116181417A CN 116181417 A CN116181417 A CN 116181417A CN 202211488680 A CN202211488680 A CN 202211488680A CN 116181417 A CN116181417 A CN 116181417A
Authority
CN
China
Prior art keywords
rotor
heater
temperature sensor
connector
rotor disk
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.)
Pending
Application number
CN202211488680.7A
Other languages
Chinese (zh)
Inventor
P·蒙奇科
M·阿玛缇
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.)
Ansaldo Energia Switzerland AG
Ansaldo Energia SpA
Original Assignee
Ansaldo Energia Switzerland AG
Ansaldo Energia SpA
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 Ansaldo Energia Switzerland AG, Ansaldo Energia SpA filed Critical Ansaldo Energia Switzerland AG
Publication of CN116181417A publication Critical patent/CN116181417A/en
Pending legal-status Critical Current

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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
    • F01D25/285—Temporary support structures, e.g. for testing, assembling, installing, repairing; Assembly methods using such structures
    • 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
    • F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
    • F01D19/02—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith dependent on temperature of component parts, e.g. of 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
    • F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • F01D21/003—Arrangements for testing or measuring
    • 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
    • F01D25/08—Cooling; Heating; Heat-insulation
    • F01D25/10—Heating, e.g. warming-up before starting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/005—Repairing methods or devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/141—Shape, i.e. outer, aerodynamic form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • F01D5/286—Particular treatment of blades, e.g. to increase durability or resistance against corrosion or erosion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
    • 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
    • F05D2230/40—Heat treatment
    • 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
    • F05D2230/80—Repairing, retrofitting or upgrading methods
    • 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
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/303—Temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

The present invention relates to an apparatus and a method for heat treating a rotor or a rotor disk of a turbomachine. Specifically, an apparatus (7) for heat treating a rotor (2) or a rotor disk of a turbomachine has: an element (8) having at least one surface area (9) arranged for contacting a surface (10) of the rotor (2) or of the rotor disk to be treated; a connector (12) arranged for elastically pressing a surface area (9) of the element (8) against a surface (10) of the rotor (2) or of the rotor disk to be treated; a heater (15) connected to the element (8); a temperature sensor (16) connected to the element (8); a control unit (17) for driving the heater (15) based on the temperature measured by the temperature sensor (16).

Description

Device and method for heat treating a rotor or a rotor disk of a turbomachine
Cross Reference to Related Applications
The present patent application claims priority from european patent application No. 21425058.1 filed from month 11, 26 of 2021, the entire disclosure of which is incorporated herein by reference.
Technical Field
The present invention relates to an apparatus and a method for heat treating a rotor or a rotor disk of a turbomachine.
The turbine may be, for example, a gas turbine, a steam turbine, or another turbine such as a turbine generator or a hydro-generator.
Background
The rotor or rotor disk (hereinafter both referred to as the rotor) is subjected to a thermal treatment during manufacture to relax stresses and improve material properties. After this initial heat treatment, the rotor is generally not subjected to further heat treatment, as the material properties will inevitably be affected. For example, a rotor of a gas turbine may be manufactured by welding a plurality of disks together; typically, after welding, the rotor disk is subjected to a heat treatment to relax stresses in the heat affected zone.
During operation, the rotor is subjected to large stresses, which can cause crack initiation; for example, the areas of the rotor prone to crack initiation are the teeth defining the slots where blades (e.g., turbine blades or compressor blades) or generator windings are connected. When this occurs, cracks are typically monitored and, in case their size becomes too large, the rotor is replaced. Therefore, the impossibility of heat treatment on the rotor after manufacture prevents repair of the rotor when cracks are identified.
Disclosure of Invention
One aspect of the present invention includes providing an apparatus and method for heat treating a rotor or rotor disk after an initial heat treatment during manufacturing.
These and other aspects are achieved by providing an apparatus and a method according to the appended claims.
For example, when a crack on the rotor is identified, a heat treatment after the initiation of the heat treatment may be required during maintenance of the turbine. In this case, the crack may be repaired by, for example, welding, and a heat treatment may be required to relax the stress caused by the welding and improve the material properties at the region where the welding is performed.
Advantageously, the heat treatment is a local heat treatment, such that a large part of the rotor material is not affected by the heat treatment and its material properties are thus unaffected, but the local area where, for example, repair takes place or stress relaxation is required is subjected to a heating/dwell/cooling cycle foreseen by the heat treatment.
Drawings
Other features and advantages will be more apparent from the description of a preferred, but not exclusive, embodiment of the apparatus and method, illustrated by way of non-limiting example in the accompanying drawings, in which:
FIG. 1 illustrates a side view of a rotor of a turbomachine, such as a gas turbine;
fig. 2 shows a part of a section through line II-II of the rotor of fig. 1;
figures 3A to 5B show an embodiment of the device with parts thereof pressed outwards;
FIG. 6 shows an embodiment of the device with portions thereof pressed inwardly;
FIG. 7 shows a number of devices applied to a rotor to perform the method;
fig. 8 is a detail of an arrangement of teeth connected to a rotor or rotor disk of a gas turbine.
Detailed Description
Referring to the drawings, fig. 1 shows a rotor 1 for a turbine, such as a gas turbine or steam turbine or turbine generator or hydroelectric generator.
The rotor 1 is typically made of a plurality of rotor disks 2 that are connected together, for example by bolts or welding. Alternatively, the rotor may be made in one piece, for example forged in one piece.
Fig. 2 shows a part of a section through line II-II of fig. 1 and shows the profile of a rotor or rotor disk with teeth 3, the teeth 3 defining slots 4 therebetween; the slots 4 receive and hold blades of, for example, a turbine or compressor. In various embodiments, the slots may also hold windings of a turbine generator or a hydro-generator. Fig. 2 shows in particular the teeth 3 and the grooves 4 of a gas turbine, where the turbine rotor blades are connected via their root.
The device 7 for heat treating a rotor or a rotor disk has an element 8 with at least one surface area 9 arranged for contacting a surface 10 of the rotor or rotor disk 2 to be treated.
The device 7 has a connector 12 arranged for resiliently pressing the surface area 9 of the element 8 against the surface 10 of the rotor or rotor disc 2 to be treated.
The device 7 further has one or more heaters 15, such as resistors, connected to the element 8, and one or more temperature sensors 16, such as thermocouples, also connected to the element 8.
The control unit 17 is provided for driving the heater 15 based on the temperature measured by the temperature sensor 16.
In a preferred embodiment, the element 8 comprises at least two portions 18 with at least one heater 15 and at least one temperature sensor 16.
In this regard, the portion 18 has at least one first aperture that accommodates the heater 15. The heaters may be interchangeable so that a particular heater capable of supplying the required heat flux may be provided depending on the heat treatment to be performed.
Advantageously, the first hole is adjacent to the surface area 9 of the element. This is because heat is transferred to the rotor or rotor disk via the contact surface area 9 of the element 8 and the surface 10 of the rotor or rotor disk.
The portion 18 further has one or more second apertures that receive one or more temperature sensors 16. For example, the second hole is a blind hole opening at an opposite side of the portion 18; a thermocouple as a temperature sensor 16 is inserted into each of the second holes.
The portions 18 are advantageously located at opposite sides of the element 8 so that the element 8 can be stably connected into the slot 4. In this case, a thermal insulator 22 is provided between the portions 8, so that the heat provided at one side of the element 8 does not affect the other side. For example, in the case of a heat treatment at only one side of the element 8, the other side is not heated or is heated in an inefficient manner (i.e. in a manner that does not effectively alter the properties of the rotor or rotor disk). The thermal insulator may be defined by an air gap or by a thermally insulating material.
Different embodiments are envisioned for the connector 12.
The connector 12 may be provided between the portions 18 and may be arranged for resiliently pressing the portions outwardly.
For example, the connector 12 may include one or more springs, such as leaf springs, special springs (e.g., V-springs), coil springs, and the like.
In various embodiments, the connector 12 may include one or more wedges 23, 34; accordingly, the portions 18 at opposite sides of the element 8 may define wedge seats 24, and the surfaces of the wedges 23, 34 are slidingly connected to the wedge seats 24. Springs are also provided to press the wedges 23, 34 against the wedge seat 24.
In addition, the element 8 may further comprise a bottom portion 25 also having a heater 15. A bolt 27 is connected to the bottom portion 25 and extends through the wedges 23, 34. The spring 28 is inserted on the bolt 27 between a stop 29 provided at the end of the bolt opposite to the end connected to the bottom portion 25 and the wedge 23, 34. For example, two bolts 27 may press wedge 23 to bottom portion 25, and two other bolts 27 may press wedge 34 to bottom portion 25. Because of the shape of the wedges 23, 34 and the shape of the wedge seat 24, the surface area 9 is pressed to the surface 10 to ensure thermal conductivity.
The figures show an embodiment in which element 8 has a fir tree surface profile 30, wherein fir tree surface profile 30 defines a side projection 32. Advantageously, each lateral projection 32 is defined by one portion 18.
The connector 12 may also be provided around the portion 18 and may be arranged for resiliently pressing the portion 18 inwardly. In this case, the connector 12 may comprise one or preferably more than one elastic band provided around the element. Other embodiments of the connector 12 may include a strap made of rigid elements with ends of the rigid elements connected by resilient elements; for example, a wire whose ends are connected by a coil spring is conceivable.
Particular embodiments will now be described with particular reference to the accompanying drawings.
Fig. 3A shows an embodiment of the device 7 with the element 8 made of five parts 18. Each portion 18 at the side of the element 8 has a first hole which accommodates a thermal resistor as the heater 15, and a second hole which is open at the opposite side thereof and which each accommodates a thermocouple as the temperature sensor 16. Leaf springs are provided as connectors 12 between the side-by-side portions 18 to ensure contact and thermal conductivity between the surface area 9 and the surface 10.
Also, FIG. 3B shows an embodiment similar to that of FIG. 3A; this embodiment is arranged for heat treating the tooth 3 at only one side thereof, and thus the portion 18 at the right side of fig. 3B is not provided with a heater and a temperature sensor. In this case, it is possible to provide a portion without a hole for accommodating the heater 15 or the temperature sensor 16, or to leave the hole empty, or also the heater 15 and the temperature sensor 16, even if provided, not used, i.e., not connected to the control unit 17 or its signal is not used to drive the heat treatment. In any case, temperature measurements can be used to control the temperature at teeth 3 that have not been subjected to heat treatment. Fig. 3B also shows the bottom portion 18 with an asymmetrical shape defining the cutout 35 such that it contacts only the tooth 3 to be treated (tooth on the left in fig. 3B) but not the tooth 3 that does not have to be subjected to heat treatment (tooth on the right in fig. 3B).
Fig. 4 shows an embodiment of the device 7 with elements 8 made of six parts 18. Each section 18 has a first hole accommodating a thermal resistor as the heater 15, and a second hole accommodating a thermocouple as the temperature sensor 16. A V-spring as connector 12 is provided between the side-by-side portions 18 to ensure contact and thermal conductivity between the surface area 9 and the surface 10.
Fig. 5A-5B show an embodiment of the device 7 with the element 8 made of four parts 18 and an additional bottom part 25. The portion 18 at the side has a first hole accommodating a thermal resistor as the heater 15, and a second hole accommodating a thermocouple as the temperature sensor 16. The side portions 18 define a wedge seat 24, and the wedges 23 and 34 are slidingly provided in the seat 24. The bottom portion 25 has a first hole that accommodates a thermal resistor as the heater 15, and a second hole that accommodates a thermocouple as the temperature sensor 16.
Fig. 6 shows an embodiment of the device 7 with elements 8 made of six parts 18. Each section 18 has a first hole accommodating a thermal resistor as the heater 15 and a second hole accommodating a thermocouple as the temperature sensor 16. An elastic band is provided around the portion 18 as the connector 12.
Hereinafter, with reference to fig. 7, an arrangement of a rotor or rotor disc is described, which is connected to one or more devices 7 for heat treating it.
The surface profile 30 of the element 8 matches the surface profile 31 of the tooth 3; the element 8 is accommodated in the recess 4 with its surface contour 30 matching the surface contour 31 of the tooth 4. The surface area 9 of the element 8 contacts the surface 10 of the rotor or rotor disk to be treated and the surface portion 33 of the element 8 adjacent to the surface area 9 does not contact the surface profile 31.
Thanks to the device, the rotor or rotor disk may be locally heat treated.
In fact, since the surface area 9 through which heat is transferred from the device 7 to the rotor or rotor disk is in contact with the surface 10 to be treated, heat treatment can be performed at the surface 10 and the area of the rotor or rotor disk adjacent thereto. These are areas of the rotor or rotor disk that have been weld repaired, for example, and require heat treatment to reduce stress. In contrast, since the surface portions 33 of the element 8 do not contact the surface profile 31, no heat or no significant heat is transferred through these surfaces. In this way, the transferred heat and thus the heat treatment can be easily controlled.
The invention also relates to a method for heat treating a rotor or a rotor disk of a turbomachine.
The method comprises heating the rotor teeth 3 at both sides thereof by one or more means 7.
Advantageously, thanks to the device 7, the heat treatment can be carried out while maintaining a uniform or substantially uniform temperature through the teeth 3 (i.e. a temperature difference through the teeth within a limited range, for example 20 ℃ or 10 ℃ or lower). This temperature uniformity during the heat treatment ensures that no stresses are induced in the tooth 3 by the heat treatment, but rather that stresses can be relieved. In addition, the overall material properties of the rotor or rotor disk are not affected, since the heat treatment is only carried out at a portion thereof.
The operation of the device 7 is clear from what has been described and shown and is essentially as follows.
Reference is made in detail hereinafter to the embodiments of fig. 3 to 5.
Means 7 are provided in the groove 4 at the opposite side of one tooth 3.
The control unit 17 then drives the heaters 15 such that they supply heat to the sections 18 and via the surface area 9 to the surface 10 to be treated and the areas adjacent thereto.
The control unit 17 may drive the heater 15 based on the temperature measured by the temperature sensor 16. In this respect, the control unit 17 may drive each heater 15 independently of the others and based only on the temperature measured by the temperature sensor 16 adjacent thereto and housed in the same portion 18. Different controls are naturally possible and the control unit 17 may drive the heater 15 based on the average temperature measured by all or part of the temperature sensor 16.
In addition, the control unit 17 may drive the heater 15 based on the measured value of the temperature sensor 16 so as to cause a predetermined temperature distribution through the teeth 3 over time.
In a particularly advantageous embodiment, the temperature cycles to which the heating or rotor teeth 3 to be provided have to be subjected are first calculated, and the control unit 17 drives the heater 15 on the basis of the measured values of the temperature sensor 16 in order to reproduce the calculated heating or temperature cycles.
Advantageously, thanks to the device 7, the heat treatment is carried out only at the teeth 3. The surface 10 of the tooth through which heat is transferred (i.e. the surface 10 in contact with the surface area 9) is a more stressed surface during operation, because of the interaction with the blade root.
The portion 18 defining the element 8, the heater 15, the temperature sensor 16, the connector 12 may define a kit of components that may be assembled for heat treatment and then disassembled as required for each specific heat treatment to be performed in accordance with the heating to be transferred and the teeth to be treated.
Naturally, the described features may be provided independently of each other. In practice, the materials used, as well as the dimensions, may be any according to requirements and to the state of the art.

Claims (15)

1. Device (7) for heat treating a rotor (2) or a rotor disk of a turbomachine, characterized in that it comprises
An element (8) having at least one surface area (9) which is arranged for contacting a surface (10) of the rotor (2) or of a rotor disk to be treated,
at least one connector (12) arranged for elastically pressing at least one surface area (9) of the element (8) against the surface (10) of the rotor (2) or rotor disk to be treated,
at least one heater (15) connected to said element (8),
at least one temperature sensor (16) connected to said element (8),
a control unit (17) for driving the heater (15) based on the temperature measured by the temperature sensor (16).
2. Device (7) according to claim 1, characterized in that said element (8) comprises at least two portions (18) with at least one heater (15) and at least one temperature sensor (16).
3. Device (7) according to claim 2, characterized in that the at least two portions (18) are located at opposite sides of the element (8), wherein a thermal insulator (22) is provided between the portions (8).
4. The device (7) according to any one of the preceding claims, wherein each portion (18) has at least one first hole accommodating the at least one heater (15).
5. Device (7) according to claim 4, characterized in that the first hole is adjacent to a surface area (9) of the element (8).
6. The device (7) according to any one of the preceding claims, wherein each portion (18) has at least one second hole accommodating the at least one temperature sensor (16).
7. The device (7) according to any one of claims 1 to 6, wherein the connector (12) is provided between at least two parts (18) and is arranged for resiliently pressing the two parts (18) outwards.
8. Device (7) according to claim 7, characterized in that the connector (12) comprises a spring.
9. Device (7) according to claim 8, characterized in that,
the portions (18) at opposite sides of the element (8) define wedge seats (24),
wherein the method comprises the steps of
The connector (12) further comprises at least one wedge (23, 34),
the surface of the wedge-shaped body (23, 34) is slidingly connected to the wedge-shaped seat (24),
the spring presses the wedge (23, 34) against the wedge seat (24).
10. The device according to any one of claims 1 to 6, wherein the connector (12) is provided between at least two parts (18) and arranged for resiliently pressing the two parts inwardly.
11. Device (7) according to any one of the preceding claims, characterized in that,
the element (8) has a fir tree surface profile (30),
the fir tree surface profile (30) of the element (8) defines a lateral projection (32),
each side projection (32) is defined by a portion (18).
12. Kit of components comprising a portion (18) arranged for defining an element (8), a heater (15), a temperature sensor (16), a connector (12), a control unit (17), wherein the components are assemblable so as to define a device (7) according to any one of claims 1 to 11.
13. An arrangement of a rotor (2) or a rotor disc and a device (7) according to any one of claims 1 to 11, characterized in that,
the rotor (2) or rotor disk having teeth (3) defining grooves (4) arranged for receiving the blades or windings,
the element (8) is accommodated in the recess (4) with its surface contour (30) matching the surface contour (31) of the tooth (3),
the surface area (9) of the element (8) contacts the surface (10) of the rotor (2) or rotor disk to be treated,
a surface portion (33) of the element (8) adjacent to the surface region (9) does not contact the surface contour (31) of the rotor (2) or rotor disk.
14. A method for heat treating a rotor (2) or a rotor disk of a turbomachine, comprising heating rotor teeth (3) at both sides thereof by at least one device (7) according to any one of claims 1 to 11.
15. The method of claim 14, wherein the step of providing the first information comprises,
calculating the heating to be provided to the rotor teeth (3) or the temperature cycles to which the rotor teeth (3) have to be subjected, and
the control unit (17) drives the heater (15) based on the measured value of the temperature sensor (16) of the at least one device (7) to reproduce the calculated heating or temperature cycle.
CN202211488680.7A 2021-11-26 2022-11-25 Device and method for heat treating a rotor or a rotor disk of a turbomachine Pending CN116181417A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP21425058.1A EP4187060A1 (en) 2021-11-26 2021-11-26 Device and method for heat treating a rotor or rotor disc of a turbomachine
EP21425058.1 2021-11-26

Publications (1)

Publication Number Publication Date
CN116181417A true CN116181417A (en) 2023-05-30

Family

ID=79230874

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211488680.7A Pending CN116181417A (en) 2021-11-26 2022-11-25 Device and method for heat treating a rotor or a rotor disk of a turbomachine

Country Status (2)

Country Link
EP (1) EP4187060A1 (en)
CN (1) CN116181417A (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4570053A (en) * 1983-05-04 1986-02-11 General Electric Company Apparatus for heating a turbine wheel
US20140120483A1 (en) * 2012-10-29 2014-05-01 General Electric Company Local Heat Treatment and Thermal Management System for Engine Components
EP3318716B2 (en) * 2016-11-04 2023-01-11 General Electric Company Installation or removal of turbine blade at turbine blade base

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