WO2017122632A1 - 翼引き抜き装置及び方法 - Google Patents
翼引き抜き装置及び方法 Download PDFInfo
- Publication number
- WO2017122632A1 WO2017122632A1 PCT/JP2017/000464 JP2017000464W WO2017122632A1 WO 2017122632 A1 WO2017122632 A1 WO 2017122632A1 JP 2017000464 W JP2017000464 W JP 2017000464W WO 2017122632 A1 WO2017122632 A1 WO 2017122632A1
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- WO
- WIPO (PCT)
- Prior art keywords
- blade
- wing
- turning
- traction
- string
- Prior art date
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Classifications
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- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
-
- 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
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
-
- 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
- F01D25/246—Fastening of diaphragms or stator-rings
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
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- 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
- F01D5/3023—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses
- F01D5/303—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot
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- 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
- F01D5/3023—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses
- F01D5/303—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot
- F01D5/3038—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot the slot having inwardly directed abutment faces on both sides
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- 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
- F01D5/3023—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses
- F01D5/3046—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses the rotor having ribs around the circumference
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- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
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- 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
- F05D2220/00—Application
- F05D2220/30—Application in turbines
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- 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
- F05D2230/70—Disassembly 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
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/12—Fluid guiding means, e.g. vanes
Definitions
- the present disclosure relates to a blade extraction apparatus and method for extracting a stationary blade from a blade ring.
- a jig main body fixed to the outer peripheral portion of a blade ring, a claw portion attached to a stationary blade block, a wire connected to the claw portion and the jig main body, and a wire rod as a jig A wing extraction device includes a winder that draws toward the main body.
- the claw portion of the blade extraction device of Patent Document 1 has a claw that is inserted into the gap between the stationary blade block and the heat shield ring, and the claw portion is locked to the stationary blade block so that the stationary blade block The nail part is fixed.
- Patent Document 2 discloses a blade extracting device in which a guide rail is attached to a blade ring, a movable bracket is attached to the guide rail or the blade ring, and the movable bracket is configured to be slidable by a hydraulic cylinder.
- At least some embodiments of the present invention provide a blade extraction device that can smoothly extract a blade even if the positional relationship of the traction portion of the blade extraction device with respect to the extraction target blade changes. And to provide a method.
- a wing extraction device includes: A blade extraction device for extracting a blade engaged with a groove extending in a circumferential direction of the blade ring on the inner peripheral side of the blade ring in the circumferential direction along the groove; A towing unit for towing the wing; A string-like member connecting the traction part and the wing; A first turning portion that is attached to the wing ring so as to contact a portion between the traction portion and the wing of the string-like member, and turns the direction of the traction force transmitted through the string-like member; , Is provided.
- the first turning unit since the direction of the traction force by the traction unit is redirected by the first turning unit and then transmitted to the wing, the first turning unit is placed at an appropriate position with respect to the extraction target wing. As long as it is installed, the wing can be pulled out smoothly even if the positional relationship of the traction portion with respect to the wing to be pulled out changes. That is, if the first turning portion is installed at a position where the straight line connecting the drawing target wing and the first turning portion is along the circumferential direction of the blade ring, the direction of the traction force transmitted to the drawing target wing through the first turning portion. Is along the circumferential direction of the blade ring, and the blade can be pulled out smoothly.
- the first turning portion has a direction of the traction force transmitted to the wing via the string-like member from a first pulling direction along the string-like member between the traction portion and the first turning portion. It is configured to turn in a second pulling direction along the string-like member between the first turning portion and the wing, The second pulling direction is closer to the tangential direction of the blade ring than the first pulling direction.
- the pulling force acting directly on the wing can be brought close to the tangential direction or matched with the tangential direction, so that the wing can be pulled out more smoothly. That is, when using the blade extraction device having the above configuration (1), the blades are extracted in the circumferential direction along grooves extending in the circumferential direction of the blade ring. Therefore, in the configuration of (2) above, the second traction direction along the string-shaped member between the first turning portion and the wing is set closer to the tangential direction of the wing ring than the first traction direction. For this reason, the direction of the pulling force that acts directly on the wing can be brought close to the drawing direction of the wing, or can be made coincident with the drawing direction of the wing. Accordingly, the traction force by the traction section is effectively used for extracting the wing, and the force component in the direction other than the wing extraction direction is reduced, so that the wing can be extracted more smoothly.
- the first turning portion is configured to engage with a concave groove formed along the circumferential direction in the blade ring or a heat shield ring attached to the blade ring, and is movable along the circumferential direction. .
- the first turning portion is configured to be movable along the circumferential direction of the blade ring while being engaged with the concave groove of the blade ring or the heat shield ring.
- the turning part can be easily moved. Therefore, when the first turning portion is moved, the efficiency of the drawing work can be improved as compared with the case where the first turning portion is attached and detached each time, for example, by welding or the like.
- the first turning portion is placed at a position where the second pulling direction is closer to the tangential direction of the blade ring than the first pulling direction as described in the configuration of (2) above. It can be easily moved.
- the first turning portion is attached to the inner peripheral side of the blade ring so that the string-like member is positioned within a range occupied by the blade in the axial direction of the blade ring.
- the first turning portion can be installed at the substantially same position as the blade in the axial direction of the blade ring by attaching the first turning portion to the inner peripheral side of the blade ring. Therefore, compared to the case where the first turning part is attached to the side wall surface of the blade ring, the direction of the straight line connecting the blade and the first turning part (wing pulling direction) is the circumferential direction of the blade ring (wing moving direction). The wings can be pulled out more smoothly.
- the first turning portion is a pulley configured to be rotatable while being in contact with the string-like member.
- the friction between the string-like member and the first turning portion can be reduced when the blade is pulled out, and the durability of the blade extracting device can be improved.
- the frame further includes a frame that is attached to the blade ring so as to be bridged between both ends of the blade ring in a state of being divided into an arc shape and supports the pulling portion.
- the frame receives the reaction force (reaction force against the wing pulling force) acting on the traction portion by supporting the traction portion on the frame attached to the divided blade ring. Can do. Thereby, even if the blade ring is not firmly fixed to the base or the like, the blade can be pulled out while ensuring the load balance acting on the blade ring.
- the frame is A pair of struts respectively connected to both ends of the blade ring; A support rod provided so as to be bridged between the pair of support columns, and supporting the traction unit; including.
- the traction portion is configured to be slidable along the support rod.
- the traction portion is installed at a position where a first traction direction along the string-shaped member between the traction portion and the first turning portion is along the support column.
- the wing extraction device is attached to the frame so as to contact a portion between the traction portion and the first turning portion of the string-like member, and determines the direction of the traction force transmitted through the string-like member.
- a second turning part for turning is further provided.
- the degree of freedom of the orientation of the traction portion is improved by attaching the second turning portion to the frame, and the space necessary for installing the traction portion is larger than when there is no second turning portion. This makes it possible to reduce the size of the frame.
- the wing extraction device is attached to one end portion of the wing ring in the circumferential direction so as to contact a portion between the traction portion and the first turning portion of the string-like member, A third turning portion for turning the direction of the traction force transmitted through the member is further provided.
- the third turning portion attached to the circumferential end of the blade ring is brought into contact with the portion of the string-like member between the pulling portion and the first turning portion, so that the position of the blade Regardless, the direction of the traction force transmitted through the portion on the wing side of the third turning portion of the string-like member can be maintained within an appropriate range. For this reason, it is not necessary to move the traction portion in accordance with the movement of the wing along the wing ring, and the wing extraction operation can be performed efficiently.
- a wing extraction method includes: A blade extraction method for extracting a blade engaged with a groove extending in a circumferential direction of the blade ring on the inner peripheral side of the blade ring in the circumferential direction along the groove; A string-like member connecting step of connecting the wing and a traction portion for towing the wing with a string-like member; A first turning portion for turning the direction of the traction force transmitted through the string-like member is attached to the wing ring so as to be in contact with a portion of the string-like member between the traction portion and the wing. 1 turning part mounting step; A wing moving step of generating the traction force by the traction section and moving the wing in the circumferential direction; Is provided.
- the direction of the traction force by the traction unit is turned by the first turning unit and then transmitted to the wing. Therefore, the first turning unit is placed at an appropriate position with respect to the extraction target wing. As long as it is installed, the wing can be pulled out smoothly even if the positional relationship of the traction portion with respect to the wing to be pulled out changes.
- the string-like member between the first turning portion and the wing from the first pulling direction along the string-like member between the pulling portion and the first turning portion.
- the first turning portion is attached to the blade ring so that the traction force is turned in a second traction direction along The second pulling direction is closer to the tangential direction of the blade ring than the first pulling direction.
- the pulling force acting directly on the wing can be brought close to the tangential direction or matched with the tangential direction, so that the wing can be pulled out more smoothly. Further, since the wing is pulled from the traction portion via the first turning portion, the second traction direction can be easily brought close to the tangential direction regardless of the position of the traction portion.
- the first turning portion is moved along the circumferential direction in accordance with the movement of the wing, so the first turning portion is moved to an appropriate position according to the position of the wing. Then, when moving the wing again, the wing can be pulled out smoothly.
- a third turning portion for turning the direction of the traction force transmitted through the string-like member is provided at a position between the traction portion and the first turning portion of the string-like member.
- the traction part is moved in accordance with the movement of the wing along the wing ring. Even if it is not moved, the wing extraction operation can be performed appropriately.
- a frame attaching step for attaching a frame for supporting the traction portion to the blade ring so as to be bridged between both end portions of the blade ring in a state of being divided into an arc shape.
- the frame on which the traction part is supported is attached to the divided blade ring, so that the reaction force acting on the traction part (reaction force against the wing pulling force) is applied to the frame. Can receive. Thereby, even if the blade ring is not firmly fixed to the base or the like, the blade can be pulled out while ensuring the load balance acting on the blade ring.
- the frame is A pair of struts respectively connected to both ends of the blade ring; A support rod provided so as to be bridged between the pair of support columns, and supporting the traction unit; Including A traction unit positioning step is further provided in which the traction unit is moved along the support rod to position the traction unit corresponding to the position of the wing.
- the traction portion supported by the support rod can be separated from the blade ring end by the pair of support columns, so that the wing has reached a position close to the end of the blade ring. Even in this case, the wing can be pulled out smoothly. Moreover, it is possible to prevent an excessive load from being applied to the frame by moving the traction portion and positioning it according to the position of the wing.
- the second turning portion for turning the direction of the traction force transmitted through the string-like member is brought into contact with the portion of the string-like member between the pulling portion and the first turning portion.
- a second turning portion attaching step for attaching to the frame is further included.
- the degree of freedom of orientation of the traction portion is improved by attaching the second turning portion to the frame, and the space necessary for installation of the traction portion is reduced compared to the case where there is no second turning portion. This makes it possible to reduce the size of the frame.
- the object to be extracted from the blade ring is a stationary blade block including a plurality of stationary blades
- the string-like member connecting step the string-like member is connected to the stationary blade block on the blade root side of the stationary blade with respect to the protruding portion of the locking member.
- a locking member is installed between the adjacent stationary blades, and the stationary blade block is located closer to the blade root side of the stationary blade than the protruding portion of the locking member.
- a string-like member is connected to the cable.
- the direction of the traction force by the traction unit is turned by the first turning unit and then transmitted to the wing, so that the first position is appropriate for the wing to be pulled out.
- the turning section is installed, the wing can be pulled out smoothly even if the positional relationship of the traction section with respect to the drawing target wing changes.
- FIG. 2 is a cross-sectional view (a cross-sectional view taken along line AA in FIG. 1) of the blade ring to which the blade is attached according to the embodiment.
- FIG. 5 is a cross-sectional view (cross-sectional view taken along the line BB in FIG. 1) of the blade ring to which the first turning portion is attached in the embodiment. It is a figure for demonstrating the positional relationship of the wing
- FIG. 1 is an overall configuration diagram showing a state in which the blade extraction device 1 according to the embodiment is attached to the blade ring 200.
- FIG. 2 is a cross-sectional view (cross-sectional view taken along the line AA in FIG. 1) of the blade ring 200 to which the blade 100 according to the embodiment is attached.
- FIG. 3 is a cross-sectional view (cross-sectional view taken along the line BB in FIG. 1) of the blade ring 200 to which the first turning portion 4 is attached in one embodiment.
- the illustrated blade extraction device 1 is suitable for extracting a blade 100 attached to a rotary machine such as a turbine such as a gas turbine or a steam turbine or a compressor.
- a stationary blade is illustrated as the extraction target blade 100.
- the blade (stationary blade) 100 is adapted to engage with a groove 202 of a heat shield ring 204 attached to the inner peripheral side of the blade ring 200.
- the groove 202 of the heat shield ring 204 extends along the circumferential direction of the blade ring 200.
- two heat shield rings 204 are attached to the inner peripheral side of the blade ring 200 at different positions in the axial direction of the blade ring 200 (hereinafter simply referred to as the axial direction).
- Each of these two heat shield rings 204 is formed with a groove 202 along the circumferential direction of the blade ring 200.
- the base of the wing 100 is engaged with these two grooves 202.
- the drawing target blade 100, the blade ring 200, or the groove 202 is not limited to the above configuration.
- the blade ring 200 may be configured such that the heat shield ring 204 is not attached, and the groove 202 with which the blade 100 is engaged may be a groove formed in the blade ring 200 itself.
- the blade extraction device 1 extends in the circumferential direction of the blade ring 200 (hereinafter simply referred to as the circumferential direction) on the inner peripheral side of the blade ring 200.
- This is an apparatus for pulling out the blade 100 engaged with the groove 202 to be circumferentially along the groove 202.
- the wing extraction device 1 is for pulling the wing 100, the string-like member 3 connecting the traction part 2 and the wing 100, and the direction of the traction force transmitted through the string-like member 3.
- a first turning part 4. In this configuration, the first turning portion 4 is attached to the blade ring 200 so as to contact a portion of the string-like member 3 between the pulling portion 2 and the blade 100.
- one first end portion 31 of the string-like member 3 is attached to the traction portion 2, and a second end portion 32 opposite to the first end portion 31 is connected to the second end portion 32 via a connection portion 33.
- the wing 100 is connected.
- the first turning portion 4 comes into contact between the first end portion 31 and the second end portion 32 of the string-like member 3. Therefore, when the blade 100 is moved along the blade ring 200, the string-like member 3 bends or curves with the first turning portion 4 as a fulcrum. That is, the direction of the traction force of the traction part 2 transmitted through the string-like member 3 is turned by the first turning part 4.
- the direction of the traction force by the traction unit 2 is transmitted by the first turning unit 4 and then transmitted to the wing 100. Therefore, the first turning unit is positioned at an appropriate position with respect to the extraction target wing 100. As long as 4 is installed, the blade 100 can be smoothly pulled out even if the positional relationship of the towing unit 2 with respect to the drawing target blade 100 changes. That is, if the first turning portion 4 is installed at a position where the straight line connecting the drawing target blade 100 and the first turning portion 4 is along the circumferential direction of the blade ring 200, the drawing target blade is interposed via the first turning portion 4. The direction of the traction force transmitted to 100 is along the circumferential direction of the blade ring 200, and the blade 100 can be pulled out smoothly.
- the blade 100 attached to the blade ring 200 is normally movable along the circumferential direction of the blade ring 200.
- the blade 100 exposed to the high temperature atmosphere is fixed to the blade ring 200 (or the heat shield ring 204), and it is difficult to move the blade 100 along the blade ring 200.
- the string-like member 3 a string (sling), a rope, a wire, etc. are mentioned, These may be formed with a synthetic fiber or a metal wire.
- the string-like member 3 may be a string (sling) formed of, for example, nylon fiber.
- the string-like member 3 may change the material between the first end portion 31 and the second end portion 32 and the connection portion 33 to which the wing 100 is connected.
- pulling part 2 may be a chain block, a lever hoist, a crane, a hoist etc., for example.
- the first turning portion 4 determines the direction of the traction force transmitted to the wing 100 via the string-like member 3, and the string-like member 3 (specifically between the traction portion 2 and the first turning portion 4). manner to the first winding direction DL 1 along the first portion 35) of the string-shaped member 3, the cord-like member 3 (specifically string-shaped member 3 between the first turning portion 4 and a blade 100 first configured second to turning to the traction direction DL 2 along the two-site 36).
- the second pull direction DL 2 is close to the tangential direction of the blade ring 200 than the first pull direction DL 1.
- the angle ⁇ 2 formed by the tangential direction TL and the second pulling direction DL 2 at the radial position P corresponding to the connection point (second end portion 32) between the wing 100 and the string-like member 3 is the tangential direction TL.
- the angle ⁇ 1 formed by the first pulling direction DL 1 is the angle ⁇ 2 formed by the tangential direction TL.
- the pulling force that directly acts on the blade 100 can be brought close to the tangential direction or matched with the tangential direction, so that the blade can be pulled out more smoothly. That is, as described above, the blade 100 is pulled out in the circumferential direction along the groove 202 extending in the circumferential direction of the blade ring 200. Therefore, in the above embodiment, the second traction direction DL 2 along the string-like member 3 (specifically, the second portion 36 of the string-like member 3) between the first turning portion 4 and the wing 100 is set to the first. It is a direction close to the tangential direction of the blade ring 200 than pulling direction DL 1.
- the direction of the pulling force that directly acts on the blade 100 can be brought close to the drawing direction C of the blade 100 or can be made to coincide with the drawing direction C of the blade 100. Therefore, the traction force by the traction unit 2 is effectively used for pulling out the blade 100, and the force component in the direction other than the pulling direction of the blade 100 is reduced, so that the blade 100 can be pulled out more smoothly.
- the first turning portion 4 is engaged with the groove ring 202 formed along the circumferential direction of the blade ring 200 or the heat shield ring 204 attached to the blade ring 200, and the circumferential direction It may be configured to be movable along.
- the concave groove 202 with which the first turning portion 4 is engaged is the same as the groove 202 with which the blade 100 described above is engaged.
- the first turning portion 4 and the blade 100 are engaged with the same concave groove (groove) 202 at different positions in the circumferential direction. According to this configuration, it is not necessary to newly provide the concave groove 202 with which the first turning portion 4 is engaged.
- the groove in which the first turning portion 4 engages and the groove in which the blade 100 engages may be different.
- the first turning portion 4 is configured to be movable along the circumferential direction of the blade ring 200, so that the first turning portion 4 can be easily moved. Therefore, when the first turning part 4 is moved, the efficiency of the drawing work can be improved as compared with the case where the first turning part 4 is attached and detached each time, for example, by welding.
- the first turning portion 4 can be easily moved to a position where the second pulling direction is closer to the tangential direction of the blade ring 200 than the first pulling direction as described above. It becomes.
- the base 43 of the first turning portion 4 may be inserted into the opening 207 of the blade ring 200 in a state where the first turning portion 4 is engaged with the concave groove 202. .
- FIG. 4 is a view for explaining the positional relationship between the blade 100 and the first turning portion 4 according to the embodiment.
- the first turning portion 4 has an inner peripheral side of the blade ring 200 such that the string-like member 3 is located in a range (blade range) occupied by the blade 100 in the axial direction of the blade ring 200. It may be attached to.
- the 1st turning part 4 should just be provided so that the 2nd site
- the 1st turning part 4 may be provided so that both the 1st site
- the first turning portion 4 is attached to the inner peripheral side of the blade ring 200, so that the first turning portion 4 can be installed at substantially the same position as the blade 100 in the axial direction of the blade ring 200. Therefore, as compared with the case where the first turning portion 4 is attached to the side wall surfaces 205 and 206 of the blade ring 200, the direction of the straight line connecting the blade 100 and the first turning portion 4 (second pulling direction of the blade 100) is the blade. It is possible to follow the circumferential direction of the ring 200 (the moving direction of the blade 100), and the blade 100 can be pulled out more smoothly.
- the first turning portion 4 may be a pulley configured to be in contact with the string-like member 3 and to be rotatable. According to this configuration, when the blade 100 is pulled out, friction between the string-like member 3 and the first turning portion 4 can be reduced, and the durability of the blade extracting device 1 can be improved.
- the first turning portion 4 may have other configurations such as a sliding contact member (for example, a shoe) configured by a low friction member.
- the blade extraction device 1 is attached to the blade ring 200 so as to be bridged between both end portions 210 and 212 of the blade ring 200 in a state of being divided into arcs.
- a frame 5 for supporting the towing unit 2 is further provided.
- the frame 5 attached to the divided blade ring 200 supports the traction portion 2, so that the reaction force acting on the traction portion 2 (reaction force against the pulling force of the wing 100) is received by the frame 5.
- the blade 100 can be pulled out while securing the load balance acting on the blade ring 200 without firmly fixing the blade ring 200 to the base or the like.
- the frame 5 is provided so as to be bridged between the pair of column portions 51 and 52 connected to the both ends 210 and 212 of the blade ring 200 and the pair of column portions 51 and 52, respectively. 2 and a support rod 54 that supports 2. According to this, since the traction portion 2 supported by the support rod 54 can be separated from the end portions 210 and 212 of the blade ring 200 by the pair of support column portions 51 and 52, the blade 100 is connected to the end of the blade ring 200. Even when the position near the portions 210 and 212 is reached, the wing 100 can be pulled out smoothly.
- the pair of support columns 51 and 52 are provided in parallel to each other, and a support bar 54 is provided along a direction orthogonal to the extending direction of these support columns 51 and 52. That is, the frame 5 has a gate shape.
- the support portions 51 and 52 may be bolted to the end portions 210 and 212 of the blade ring 200. In this case, when the blade ring 200 is assembled, the column portions 51 and 52 are connected to the end portions 210 and 212 of the blade ring 200 by using bolt holes for connecting the sections of the half-shaped blade ring 200 to each other. Bolts may be fastened.
- the configuration of the frame 5 is not limited to this, and the frame 5 has other shapes such as a trapezoidal shape, an inverted trapezoidal shape, a curved U shape, or a C shape. Also good.
- the traction unit 2 may be configured to be slidable along the support bar 54.
- the traction unit 2 may be installed at a position where the first traction direction DL 1 is along the support columns 51 and 52. According to this structure, since the force which acts on the support
- FIG. 5 is a configuration diagram illustrating the stationary blade block 110 and the locking member 8 according to the embodiment.
- FIG. 6 is a view for explaining a blade extraction method according to an embodiment. In the following description, the symbols shown in FIGS. 1 to 4 are used as appropriate.
- the blade pulling method pulls the blade 100 engaged with the groove 202 extending in the circumferential direction of the blade ring 200 on the inner peripheral side of the blade ring 200 in the circumferential direction along the groove 202. It is a way for.
- the blade drawing method includes a string-like member connecting step for connecting the blade 100 and the traction portion 2, a first turning portion attaching step for attaching the first turning portion 4 to the blade ring 200, and a blade for moving the blade in the circumferential direction. A moving step.
- the string 100 is connected to the wing 100 and the traction portion 2 for towing the wing 100.
- traction force is generated by the traction unit 2 to move the wing in the circumferential direction.
- the blades 100 are densely arranged in the circumferential direction in the blade ring 200, the blade 100 can be moved only in one circumferential direction in the drawing operation of the blade 100.
- the first turning portion 4 for turning the direction of the traction force transmitted through the string-like member 3 is brought into contact with a portion of the string-like member 3 between the traction portion 2 and the wing.
- the first turning portion 4 and the wing 100 are moved from the first pulling direction along the first portion 35 of the string-like member 3 between the pulling portion 2 and the first turning portion 4.
- the first turning portion 4 may be attached to the blade ring 200 so that the traction force is turned in the second traction direction along the second portion 36 of the string-like member 3 therebetween.
- the second pulling direction is closer to the tangential direction of the blade ring 200 than the first pulling direction.
- blade 100 can be brought close to a tangential direction, or can be made to correspond with a tangential direction, the extraction
- the first turning unit 4 is placed at an appropriate position with respect to the extraction target wing 100. As long as the wing 100 is installed, the wing 100 can be pulled out smoothly even if the positional relationship of the towing unit 2 with respect to the drawing target wing 100 changes.
- the blade drawing method further includes a first turning portion moving step of moving the first turning portion 4 along the circumferential direction in accordance with the movement of the blade 100 in the blade moving step.
- the blade moving step is performed again after the first turning portion moving step.
- the force acting on the first turning portion 4 from the traction portion 2 is in the radial direction. Ingredients become larger. Therefore, the force in the direction of separating the first turning portion 4 from the blade ring 200 is increased.
- the first turning portion 4 is engaged with the concave groove 202 of the blade ring 200 and the first turning portion 4 is engaged.
- the four bases may be bolted to the blade ring 200.
- the force acting on the first turning portion 4 from the traction portion 2 is a radius.
- the direction component becomes smaller and the circumferential component becomes larger. Therefore, the force in the direction of separating the first turning portion 4 from the blade ring 200 is reduced.
- the first turning part 4 can be fixed only by engaging the first turning part 4 with the concave groove 202 of the blade ring 200.
- the blade 100 may be directly pulled by the traction portion 2 without using the first turning portion 4.
- the wing extraction method is a frame attachment in which the frame 5 that supports the traction portion 2 is attached to the wing ring 200 so as to be bridged between both ends 210 and 212 of the wing ring 200 in a state of being divided into arcs.
- the method further includes a step. According to this method, since the frame 5 on which the traction unit 2 is supported is attached to the divided blade ring 200, the reaction force acting on the traction unit 2 (reaction force against the pulling force of the wing 100) is applied to the frame. 5 can be received. Accordingly, the blade 100 can be pulled out while securing the load balance acting on the blade ring 200 without firmly fixing the blade ring 200 to the base or the like.
- the frame 5 is bridged between a pair of support columns 51 and 52 connected to both ends 210 and 212 of the blade ring 200, and the pair of support columns 51 and 52, respectively.
- the support rod 54 that supports the traction unit 2 the wing extraction method may further include a traction unit positioning step.
- the traction unit positioning step the traction unit 2 is moved along the support rod 54 to position the traction unit 2 corresponding to the position of the wing 100.
- the traction portion 2 supported by the support rod 54 can be separated from the end of the blade ring 200 by the pair of support columns 51 and 52, so that the blade is close to the end of the blade ring 200. Even when reaching, the wing can be pulled out smoothly.
- the movable range of the traction portion 2 along the support rod 54 is at least 45 ° to 135 °.
- An axial range corresponding to the angular range may be used.
- the blade extraction method includes a locking member between the stationary blades 100. And a locking member installation step of installing 8.
- the locking member installation step the locking member 8 is installed between the adjacent stationary blades 100 so that at least part of the stationary blade block 110 protrudes from between the adjacent stationary blades 100.
- the string-like member connecting step the string-like member 3 is connected to the stationary blade block 110 on the blade root side of the stationary blade 100 with respect to the protruding portion of the locking member 8.
- the stationary blade block 110 may be configured to be stacked in a plurality of stages in the height direction. Thereby, this stationary blade block 110 is applicable also to the kind of blade
- a locking member is installed between the adjacent stationary blades 100, and the stationary blade is located closer to the blade root side of the stationary blade 100 than the protruding portion of the locking member 8.
- the string-like member 3 is connected to the block 110.
- the direction of the traction force by the traction unit 2 is turned by the first turning unit 4 and then transmitted to the wing.
- the first turning part 4 is installed at an appropriate position, the wings can be pulled out smoothly even if the positional relationship of the traction part 2 with respect to the drawing target wings changes.
- the present invention is not limited to the above-described embodiments, and includes forms obtained by modifying the above-described embodiments and forms obtained by appropriately combining these forms.
- the wing extraction device 1 includes only the first turning portion 4 between the traction portion 2 and the wing 100 has been shown.
- first turning portion 4 other turning portions are provided. It may be provided.
- FIG. 7 is an overall configuration diagram showing a state in which a blade extraction device according to another embodiment is attached to a blade ring.
- the blade extraction device 300 shown in FIG. 7 further includes a second turning portion 304 attached to the frame 5 in addition to the configuration of the blade extraction device 1 shown in FIG. The second turning portion 304 contacts a portion of the string-like member 3 between the pulling portion 2 and the first turning portion 4.
- the wing extraction device 300 includes the first turning portion 4 and the second turning portion 304 between the wing 100 and the traction portion 2, and the direction of the traction force by the traction portion 2 is the second turning portion 304 and the second turning portion 304. It is turned by one turning part 4. Specifically, the traction force by the traction unit 2 is generated by the second turning unit 304 and the second turning unit 304 from the traction direction along the string-like member 3 between the traction unit 2 and the second turning unit 304. It is turned in the pulling direction (first pulling direction DL 1 ) along the string-like member 3 between the first turning part 4.
- the traction force in the first traction direction DL 1 is turned in the second traction direction DL 2 along the string-like member 3 between the first turning portion 4 and the blade 100 in the first turning portion 4.
- the second traction direction DL 2 is closer to the tangential direction of the blade ring 200 than the first traction direction DL 1 ( ⁇ 1 > ⁇ 2 ).
- the second turning portion 304 may be attached to the support bar 54 of the frame 5 as shown in FIG. Or in other embodiment, the 2nd turning part 304 is attached to the support
- the specific configuration of the second turning unit 304 may be the same as that of the first turning unit 4 described above. That is, the second turning portion 304 may be a pulley configured to be in contact with the string-like member 3 and to be rotatable, or may be a sliding contact member configured to be in contact with the string-like member 3. Good.
- the second turning portion 304 is attached to the support bar 54 so as to be movable in a direction along the support bar 54 of the frame 5.
- the second turning portion 304 may be guided by a guide rail provided on the support bar 54 and movable in the direction along the support bar 54. Accordingly, by moving the second turning portion 304 in accordance with the change in the position of the wing 100, the direction of the traction force transmitted through the portion of the string-like member 3 closer to the wing 100 than the second turning portion 304 is in an appropriate range. Can be maintained within.
- the position of the second turning portion 304 can be appropriately determined according to the position of the blade 100 or the first turning portion 4. Therefore, in FIG.
- the second turning portion 304 is provided at a position where the string-like member 3 between the second turning portion 304 and the first turning portion 4 extends along the column portions 51 and 52.
- the configuration of the second turning unit 304 is not limited to this example.
- the position of the second turning portion 304 is, for example, a load that acts on the frame 5 via the second turning portion 304 or a load that acts on the first turning portion 4, the wing 100, or the blade ring 200 via the string-like member 3.
- the position of the second turning unit 304 may be determined so that the reduction is reduced.
- the traction unit 2 may be attached to the support bar 54 so as to be movable in the direction along the support bar 54 of the frame 5, similarly to the second turning unit 304.
- the traction portion 2 is a wing of the pair of column portions 51 and 52 of the frame 5 as viewed from the first turning portion 4. You may fix to the position near the support
- the first turning portion 4 is attached to the blade ring 200 (the above-described first turning portion attachment step), and the traction portion 2 and the first turning portion 2 of the string-like member 3 are attached.
- the 2nd turning part 304 is attached to the flame
- the pulling direction of the pulling force by the pulling unit 2 is sequentially turned by the second turning unit 304 and the first turning unit 4, and the blade 100 is moved in the circumferential direction of the blade ring 200 by the pulling unit 2 via the string-like member 3. .
- the degree of freedom in the orientation of the traction unit 2 is improved by attaching the second turning unit 304 to the frame 5, and the space required for installing the traction unit 2 is reduced compared to the case where the second turning unit 304 is not provided.
- the frame 5 can be made compact.
- the installation position of the first turning portion 4 may be changed in the circumferential direction of the blade ring 200, and the second turning portion 304 may be moved along the support rod 54 of the frame 5. .
- the towing unit 2 may be moved along the support bar 54 of the frame 5 in accordance with the position of the wing 100.
- the traction part 2 may remain fixed at a position closer to 51.
- FIG. 8 is an overall configuration diagram showing a state in which a blade extraction device according to still another embodiment is attached to a blade ring.
- symbol same as the wing extraction apparatus 1 is attached
- a blade extraction device 400 shown in FIG. 8 further includes a third turning portion 404 attached to one end portion in the circumferential direction of the blade ring 200 in addition to the configuration of the blade extraction device 1 shown in FIG.
- the third turning portion 404 contacts a portion of the string-like member 3 between the pulling portion 2 and the first turning portion 4.
- the wing extraction device 400 includes the first turning portion 4 and the third turning portion 404 between the wing 100 and the traction portion 2, and the direction of the traction force by the traction portion 2 is the third turning portion 404 and the second turning portion 404. It is turned by one turning part 4. Specifically, the traction force by the traction unit 2 is generated by the third turning unit 404 and the third turning unit 404 from the traction direction along the string-like member 3 between the traction unit 2 and the third turning unit 404. It is turned in the pulling direction (first pulling direction DL 1 ) along the string-like member 3 between the first turning part 4.
- the traction force in the first traction direction DL 1 is turned in the second traction direction DL 2 along the string-like member 3 between the first turning portion 4 and the blade 100 in the first turning portion 4.
- the second traction direction DL 2 is closer to the tangential direction of the blade ring 200 than the first traction direction DL 1 ( ⁇ 1 > ⁇ 2 ).
- the third turning portion 404 attached to the circumferential end of the blade ring 200 is brought into contact with the portion of the string-like member 3 between the pulling portion 2 and the first turning portion 4, whereby the blade 100.
- the direction of the traction force transmitted through the portion of the string-like member 3 closer to the blade 100 than the third turning portion 404 can be maintained within an appropriate range. For this reason, it is not necessary to move the traction part 2 according to the movement of the wing
- the specific configuration of the third turning unit 404 may be the same as that of the first turning unit 4 described above. That is, the third turning portion 404 may be a pulley configured to be rotatable while being in contact with the string-like member 3, or may be a sliding contact member configured to be in contact with the string-like member 3. Good.
- the first turning portion 4 is attached to the blade ring 200 (the first turning portion attaching step described above), and the pulling portion 2 and the first turning portion 2 of the string-like member 3 are attached.
- the 3rd turning part 404 is attached to the blade ring 200 so that the site
- the third turning portion 404 is attached to the end portion 212 located on the downstream side in the blade extraction direction C among the pair of end portions 210 and 212 in the circumferential direction of the blade ring 200.
- the pulling direction of the pulling force by the pulling part 2 is sequentially turned by the third turning part 404 and the first turning part 4, and the blade 100 is moved in the circumferential direction of the blade ring 200 by the pulling part 2 via the string-like member 3. .
- the third turning portion 404 that contacts the portion of the string-like member 3 between the pulling portion 2 and the first turning portion 4 to the circumferential end 212 of the blade ring 200, the position of the blade 100.
- the direction of the traction force (first traction direction DL 1 ) transmitted through the portion of the string-like member 3 that is closer to the blade 100 than the third turning portion 400 can be maintained within an appropriate range.
- the first turning portion 4 is moved according to the movement of the blade 100 while the third turning portion 404 is attached to the circumferential end portion 212 of the blade ring 200, so that the blade 100 along the blade ring 200 moves.
- the wing extraction operation can be appropriately performed without moving the towing unit 2 in accordance with the movement.
- the wing 100 is close to the circumferential end 212 of the wing ring 200 while changing the position of the first turning part 4 according to the position of the wing 100. If it moves to, it will become difficult to move the 1st turning part 4 further in the blade
- the first turning portion 4 is removed from the blade ring 200, the traction force by the traction portion 2 is turned using the third turning portion 404 and transmitted to the wing 100, and the wing 100 is further moved in the direction C for pulling out the wing. Also good.
- the third turning portion 404 is removed from the blade ring 200, and the blade 100 is pulled out from the blade ring 200. May be.
- the second turning unit 304 shown in FIG. 7 and the third turning unit 404 shown in FIG. 8 may be used together with the first turning unit 4.
- the number of turning parts (4, 304, 404) is not particularly limited, and a plurality of turning parts (4, 304, 404) may be provided.
- a turning part other than the turning parts (4, 304, 404) described above may be further provided, and the traction force by the traction part 2 may be turned by the other turning part and transmitted to the wing 100.
- the blade extraction operation may be performed with the blade ring 200 (and the frame 5) placed on the ground or the like in a horizontal posture, or the blade ring 200 (and the frame 5) may be removed.
- the wing extraction operation may be performed in a state of being held in a vertical posture.
- relative or absolute arrangements such as “in a certain direction”, “along a certain direction”, “parallel”, “orthogonal”, “center”, “concentric” or “coaxial” are represented
- the expression not only represents such an arrangement strictly, but also represents a state of relative displacement with tolerance or an angle or a distance at which the same function can be obtained.
- an expression indicating that things such as “identical”, “equal”, and “homogeneous” are in an equal state not only represents an exactly equal state, but also has a tolerance or a difference that can provide the same function. It also represents the existing state.
- expressions representing shapes such as quadrangular shapes and cylindrical shapes represent not only geometrically strict shapes such as quadrangular shapes and cylindrical shapes, but also irregularities and chamfers as long as the same effects can be obtained.
- a shape including a part or the like is also expressed.
- the expression “comprising”, “including”, or “having” one constituent element is not an exclusive expression that excludes the presence of the other constituent elements.
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Abstract
Description
また、特許文献2に記載の翼引き抜き装置においても、油圧シリンダによる牽引力の方向(油圧シリンダのシリンダ軸方向)が翼環の周方向に沿っていない場合、翼環からの翼の引き抜きをスムーズに行うことが難しい。このため、引き抜き対象である翼の移動に伴って、牽引部としての油圧シリンダの固定位置をずらす必要がある。
翼環の内周側において前記翼環の周方向に延在する溝に係合した翼を前記溝に沿って前記周方向に引き抜くための翼引き抜き装置であって、
前記翼を牽引するための牽引部と、
前記牽引部と前記翼とを接続する紐状部材と、
前記紐状部材のうち前記牽引部と前記翼との間の部位に接触するように前記翼環に取り付けられ、前記紐状部材を介して伝わる牽引力の方向を転向させるための第1転向部と、
を備える。
前記第1転向部は、前記紐状部材を介して前記翼に伝わる前記牽引力の方向を、前記牽引部と前記第1転向部との間の前記紐状部材に沿った第1牽引方向から、前記第1転向部と前記翼の間の前記紐状部材に沿った第2牽引方向に転向するように構成され、
前記第2牽引方向は、前記第1牽引方向よりも前記翼環の接線方向に近い。
前記第1転向部は、前記翼環又は前記翼環に取り付けられる遮熱環に前記周方向に沿って形成された凹溝に係合し、前記周方向に沿って移動可能に構成されている。
前記第1転向部は、前記翼環の軸方向において前記翼が占める範囲内に前記紐状部材が位置するように、前記翼環の内周側に取付けられる。
前記第1転向部は、前記紐状部材に接触するとともに回転可能に構成された滑車である。
円弧状に分割された状態の前記翼環の両端部に架け渡されるように前記翼環に取り付けられ、前記牽引部を支持するためのフレームをさらに備える。
前記フレームは、
前記翼環の両端部にそれぞれ接続される一対の支柱部と、
前記一対の支柱部に架け渡されるように設けられ、前記牽引部を支持する支持棒と、
を含む。
前記牽引部は、前記支持棒に沿ってスライド可能に構成されている。
前記牽引部は、前記牽引部と前記第1転向部との間の前記紐状部材に沿った第1牽引方向が前記支柱部に沿うような位置に設置される。
前記翼引き抜き装置は、前記紐状部材のうち前記牽引部と前記第1転向部との間の部位に接触するように前記フレームに取り付けられ、前記紐状部材を介して伝わる前記牽引力の方向を転向させるための第2転向部をさらに備える。
前記翼引き抜き装置は、前記紐状部材のうち前記牽引部と前記第1転向部との間の部位に接触するように前記周方向における前記翼環の一方の端部に取り付けられ、前記紐状部材を介して伝わる前記牽引力の方向を転向させるための第3転向部をさらに備える。
翼環の内周側において前記翼環の周方向に延在する溝に係合した翼を前記溝に沿って前記周方向に引き抜く翼引き抜き方法であって、
前記翼と該翼を牽引するための牽引部とを紐状部材で接続する紐状部材接続ステップと、
前記紐状部材を介して伝わる牽引力の方向を転向させるための第1転向部を、前記紐状部材のうち前記牽引部と前記翼との間の部位に接触するように前記翼環に取り付ける第1転向部取り付けステップと、
前記牽引部によって前記牽引力を発生させ、前記翼を前記周方向に移動させる翼移動ステップと、
を備える。
前記第1転向部取り付けステップでは、前記牽引部と前記第1転向部との間の前記紐状部材に沿った第1牽引方向から、前記第1転向部と前記翼の間の前記紐状部材に沿った第2牽引方向に前記牽引力が転向されるように、前記第1転向部を前記翼環に取り付けるようにし、
前記第2牽引方向は、前記第1牽引方向よりも前記翼環の接線方向に近い。
また、牽引部から第1転向部を介して翼を引っ張るようにしているので、牽引部の位置に関わらず、第2牽引方向を容易に接線方向に近づけることができる。
前記翼移動ステップにおける前記翼の移動に応じて、前記第1転向部を前記周方向に沿って移動させる第1転向部移動ステップをさらに備え、
前記第1転向部移動ステップの後、前記翼移動ステップを再び行う。
前記翼引き抜き方法は、前記紐状部材を介して伝わる前記牽引力の方向を転向させるための第3転向部を、前記紐状部材のうち前記牽引部と前記第1転向部との間の部位に接触するように前記周方向における前記翼環の一方の端部に取り付ける第3転向部取り付けステップをさらに備え、
前記第3転向部取り付けステップの後、前記第3転向部を前記翼環の前記一方の端部に取り付けた状態のまま、前記第1転向部移動ステップを実行する。
円弧状に分割された状態の前記翼環の両端部に架け渡されるように、前記牽引部を支持するフレームを前記翼環に取り付けるフレーム取り付けステップをさらに備える。
前記フレームは、
前記翼環の両端部にそれぞれ接続される一対の支柱部と、
前記一対の支柱部に架け渡されるように設けられ、前記牽引部を支持する支持棒と、
を含み、
前記牽引部を前記支持棒に沿って移動させ、前記翼の位置に対応して前記牽引部を位置決めする牽引部位置決めステップをさらに備える。
また、牽引部を移動させ、翼の位置に対応して位置決めすることによって、フレームに過大な荷重がかかることを防げる。
前記翼引き抜き方法は、前記紐状部材を介して伝わる牽引力の方向を転向させるための第2転向部を、前記紐状部材のうち前記牽引部と前記第1転向部との間の部位に接触するように前記フレームに取り付ける第2転向部取り付けステップをさらに備える。
前記翼環からの引き抜き対象が、複数の静翼を含む静翼ブロックであり、
前記静翼ブロックの隣接する前記静翼の間から少なくとも一部が突出するように、前記隣接する前記静翼の間に係止部材を設置する係止部材設置ステップをさらに備え、
前記紐状部材接続ステップでは、前記係止部材の突出部よりも前記静翼の翼根側において、前記静翼ブロックに前記紐状部材を接続する。
ここで、図1は、一実施形態に係る翼引き抜き装置1を翼環200に取り付けた状態を示す全体構成図である。図2は、一実施形態における翼100が取り付けられた翼環200の断面図(図1のA-A線断面図)である。図3は、一実施形態における第1転向部4が取り付けられた翼環200の断面図(図1のB-B線断面図)である。
なお、図示される翼引き抜き装置1は、ガスタービンや蒸気タービン等のタービンまたは圧縮機などの回転機械に取り付けられる翼100の引き抜きに適している。
なお、引き抜き対象翼100、翼環200又は溝202は、上記構成に限定されるものではない。例えば、翼環200は、遮熱環204が取り付けられない構成であってもよいし、翼100が係合する溝202は、翼環200自体に形成された溝であってもよい。
翼引き抜き装置1は、翼100を牽引するための牽引部2と、牽引部2と翼100とを接続する紐状部材3と、紐状部材3を介して伝わる牽引力の方向を転向させるための第1転向部4と、を備える。
この構成において、第1転向部4は、紐状部材3のうち牽引部2と翼100との間の部位に接触するように翼環200に取り付けられている。
また、牽引部2は、例えばチェーンブロック、レバーホイスト、クレーン、ホイスト等であってもよい。
また、第2牽引方向DL2は、第1牽引方向DL1よりも翼環200の接線方向に近い。例えば、翼100と紐状部材3との連結点(第2端部32)に対応した径方向位置Pにおける接線方向TLと第2牽引方向DL2とのなす角度θ2が、この接線方向TLと第1牽引方向DL1とのなす角度θ1よりも小さい。
図3に例示する実施形態では、第1転向部4が係合する凹溝202は、上述した翼100が係合する溝202と同一である。この場合、翼100の引き抜き作業時、第1転向部4と翼100は、周方向に異なる位置で同一の凹溝(溝)202に係合する。この構成によれば、第1転向部4が係合する凹溝202を新たに設ける必要がない。
なお、第1転向部4が係合する凹溝と翼100が係合する溝は、別のものであってもよい。
なお、図3に例示するように、第1転向部4を凹溝202に係合させた状態で、第1転向部4の基部43が翼環200の開口207に挿通される構成としてもよい。
図4に例示するように、第1転向部4は、翼環200の軸方向において翼100が占める範囲(翼範囲)内に紐状部材3が位置するように、翼環200の内周側に取付けられてもよい。なお、第1転向部4は、少なくとも紐状部材3の第2部位36が翼範囲内に位置するように設けられていればよい。勿論、第1転向部4は、紐状部材3の第1部位35及び第2部位36の両方が翼範囲内に位置するように設けられていてもよい。
この構成によれば、翼100の引き抜き時、紐状部材3と第1転向部4との摩擦を低減することができ、翼引き抜き装置1の耐久性を向上させることができる。
なお、他の実施形態では、第1転向部4は、低摩擦部材により構成される摺接部材(例えばシュー)等のように、他の構成であってもよい。
このように、分割された翼環200に取り付けられたフレーム5に牽引部2を支持させることによって、牽引部2に作用する反力(翼100の引っ張り力に対する反力)をフレーム5で受けることができる。これにより、翼環200を強固に基台等に固定しなくても、翼環200に作用する荷重バランスを確保しながら翼100の引き抜き作業を行うことが可能となる。
これによれば、支持棒54に支持される牽引部2を、一対の支柱部51,52によって、翼環200の端部210,212から離すことができるため、翼100が翼環200の端部210,212に近い位置に到達した場合においても、翼100をスムーズに引き抜くことができる。
但し、フレーム5の構成はこれに限定されるものではなく、フレーム5は、例えば台形状、逆台形状、湾曲したU字形状又はC字形状等のように、他の形状を有していてもよい。
このように、第1転向部4の位置に応じて牽引部2をスライド移動させれば、フレーム5に過大な荷重がかかることを防げる。
また、牽引部2は、第1牽引方向DL1が支柱部51,52に沿うような位置に設置されてもよい。
この構成によれば、牽引部2から支柱部51,52に作用する力が支柱部51,52の軸方向に沿うため、支柱部51,52に過大な荷重がかかることを防げる。
なお、以下の説明では、上述した図1乃至図4に示した符号を適宜用いている。
この翼引き抜き方法は、翼100と牽引部2とを接続する紐状部材接続ステップと、第1転向部4を翼環200に取り付ける第1転向部取り付けステップと、翼を周方向に移動させる翼移動ステップと、を備える。
翼移動ステップは、牽引部2によって牽引力を発生させ、翼を周方向に移動させる。なお、通常、翼環200には翼100が周方向において密に配列されているため、翼100の引き抜き作業においては、周方向の一方の向きにおいてのみ翼100の移動が可能となる。
また、第1転向部取り付けステップでは、牽引部2と第1転向部4との間の紐状部材3の第1部位35に沿った第1牽引方向から、第1転向部4と翼100の間の紐状部材3の第2部位36に沿った第2牽引方向に牽引力が転向されるように、第1転向部4を翼環200に取り付けるようにしてもよい。この場合、第2牽引方向は、第1牽引方向よりも翼環200の接線方向に近い。
これにより、翼100に直接作用する引っ張り力を、接線方向に近づける、又は、接線方向に一致させることができるため、翼100の引き抜きをよりスムーズに行うことができる。
さらに、牽引部2から第1転向部4を介して翼100を引っ張るようにしているので、牽引部2の位置に関わらず、第2牽引方向を容易に接線方向に近づけることができる。
この場合、第1転向部移動ステップの後、翼移動ステップを再び行う。
この方法によれば、翼100の移動に応じて、第1転向部4を周方向に沿って移動させるようにしたので、翼100の位置に応じた適切な位置に第1転向部4を移動させれば、再び翼100を移動させる際に翼100をスムーズに引き抜くことができる。
なお、翼100が、引き抜き方向Cにおける前方側の端部212まで一層近づいたら、第1転向部4を介さずに、牽引部2により翼100を直接引っ張ってもよい。
この方法によれば、牽引部2が支持されるフレーム5を、分割された翼環200に取り付けるようにしたので、牽引部2に作用する反力(翼100の引っ張り力に対する反力)をフレーム5で受けることができる。これにより、翼環200を強固に基台等に固定しなくても、翼環200に作用する荷重バランスを確保しながら翼100の引き抜き作業を行うことが可能となる。
牽引部位置決めステップは、牽引部2を支持棒54に沿って移動させ、翼100の位置に対応して牽引部2を位置決めする。
この方法によれば、支持棒54に支持される牽引部2を、一対の支柱部51,52によって、翼環200端部から離すことができるため、翼が翼環200の端部に近い位置に到達した場合においても、翼をスムーズに引き抜くことができる。
また、牽引部2を移動させ、翼の位置に対応して位置決めすることによって、フレーム5に過大な荷重がかかることを防げる。
なお、翼環200の一方の端部210を0°とし、他方の端部212を180°としたとき、支持棒54に沿った牽引部2の移動可能範囲は、少なくとも45°以上135°以下の角度範囲に対応した軸方向範囲であってもよい。
係止部材設置ステップは、静翼ブロック110の隣接する静翼100の間から少なくとも一部が突出するように、隣接する静翼100の間に係止部材8を設置する。
この場合、紐状部材接続ステップでは、係止部材8の突出部よりも静翼100の翼根側において、静翼ブロック110に紐状部材3を接続する。
また、静翼ブロック110は、高さ方向に複数段積層可能な構成としてもよい。これにより、高さの異なる種類の翼100に対しても、この静翼ブロック110を適用することができる。
図7に示す翼引き抜き装置300は、図1に示した翼引き抜き装置1の構成に加えて、フレーム5に取り付けられる第2転向部304をさらに備える。第2転向部304は、紐状部材3のうち牽引部2と第1転向部4との間の部位に接触する。このように、翼引き抜き装置300は、翼100と牽引部2との間に第1転向部4と第2転向部304とを備え、牽引部2による牽引力の方向が第2転向部304及び第1転向部4によって転向されるようになっている。具体的には、牽引部2による牽引力は、第2転向部304によって、牽引部2と第2転向部304との間の紐状部材3に沿った牽引方向から、第2転向部304と第1転向部4との間の紐状部材3に沿った牽引方向(第1牽引方向DL1)に転向される。さらに、第1牽引方向DL1の牽引力は、第1転向部4において、第1転向部4と翼100の間の紐状部材3に沿った第2牽引方向DL2に転向される。ここで、図7に示す例では、第2牽引方向DL2は、第1牽引方向DL1よりも翼環200の接線方向に近い(θ1>θ2)。
上記構成によれば、第2転向部304をフレーム5に取り付けることで、牽引部2の配向の自由度が向上し、第2転向部304がない場合に比べて牽引部2の設置に必要なスペースを削減することが可能となり、フレーム5をコンパクト化できる。例えば、図7に示すように、牽引部2をフレーム5の支持棒54に沿って配向させれば、牽引部2の吊り具等のためのスペースをフレーム5の支柱部51,52に沿った方向に確保する必要がなくなり、支柱部51,52を短くすることができる。
なお、第2転向部304の具体的構成は、上述の第1転向部4と同様であってもよい。即ち、第2転向部304は、紐状部材3に接触するとともに回転可能に構成された滑車であってもよいし、紐状部材3に接触するように構成された摺接部材であってもよい。
これにより、翼100の位置の変化に合わせて第2転向部304を移動させることで、紐状部材3のうち第2転向部304よりも翼100側の部位を伝わる牽引力の方向を適切な範囲内に維持することができる。第2転向部304を移動させる際、翼100又は第1転向部4の位置に応じて第2転向部304の位置は適宜決定可能である。このため、図7には、第2転向部304と第1転向部4との間の紐状部材3が支柱部51,52に沿って延在するような位置に第2転向部304が設けられているが、第2転向部304の構成がこの例に限定されるものではない。第2転向部304の位置は、例えば、第2転向部304を介してフレーム5に作用する荷重や紐状部材3を介して第1転向部4、翼100又は翼環200等に作用する荷重が低減されるように第2転向部304の位置を決定してもよい。
このように、第2転向部304をフレーム5に取り付けることで牽引部2の配向の自由度が向上し、第2転向部304がない場合に比べて牽引部2の設置に必要なスペースを削減することが可能となり、フレーム5をコンパクト化できる。
なお、翼100の移動に応じて、第1転向部4の設置位置を翼環200の周方向に変化させるとともに、第2転向部304をフレーム5の支持棒54に沿って移動させてもよい。同様に、牽引部2は、翼100の位置に合わせてフレーム5の支持棒54に沿って移動させてもよい。あるいは、翼引き抜き作業中に牽引部2を移動させることなく、第1転向部4から見て、フレーム5の一対の支柱部51,52のうち、翼引き抜き方向Cの上流側に位置する支柱部51寄りの位置に牽引部2を固定したままであってもよい。
図8に示す翼引き抜き装置400は、図1に示した翼引き抜き装置1の構成に加えて、翼環200の周方向における一方の端部に取り付けられる第3転向部404をさらに備える。第3転向部404は、紐状部材3のうち牽引部2と第1転向部4との間の部位に接触する。このように、翼引き抜き装置400は、翼100と牽引部2との間に第1転向部4と第3転向部404とを備え、牽引部2による牽引力の方向が第3転向部404及び第1転向部4によって転向されるようになっている。具体的には、牽引部2による牽引力は、第3転向部404によって、牽引部2と第3転向部404との間の紐状部材3に沿った牽引方向から、第3転向部404と第1転向部4との間の紐状部材3に沿った牽引方向(第1牽引方向DL1)に転向される。さらに、第1牽引方向DL1の牽引力は、第1転向部4において、第1転向部4と翼100の間の紐状部材3に沿った第2牽引方向DL2に転向される。ここで、図8に示す例では、第2牽引方向DL2は、第1牽引方向DL1よりも翼環200の接線方向に近い(θ1>θ2)。
上記構成によれば、翼環200の周方向端部に取り付けた第3転向部404を牽引部2と第1転向部4との間の紐状部材3の部分に接触させることで、翼100の位置によらず、紐状部材3のうち第3転向部404よりも翼100側の部位を伝わる牽引力の方向を適切な範囲内に維持することができる。このため、翼環200に沿った翼100の移動に合わせて牽引部2を移動させる必要がなくなり、翼引き抜き作業を効率的に行うことができる。
このように、牽引部2と第1転向部4との間の紐状部材3の部分に接触する第3転向部404を翼環200の周方向端部212に取り付けることで、翼100の位置によらず、紐状部材3のうち第3転向部400よりも翼100側の部位を伝わる牽引力の方向(第1牽引方向DL1)を適切な範囲内に維持することができる。このため、第3転向部404を翼環200の周方向端部212に取り付けたまま、翼100の移動に応じて第1転向部4を移動させることで、翼環200に沿った翼100の移動に合わせて牽引部2を移動させなくても翼引き抜き作業を適切に行うことができる。
なお、牽引部2及び第3転向部404の位置を固定したまま、第1転向部4の位置を翼100の位置に応じて変更させながら翼100を翼環200の周方向端部212の近くまで移動させると、第1転向部4を翼引き抜き方向Cにさらに動かすことが難しくなる。この場合、第1転向部4を翼環200から取り外して、第3転向部404を用いて牽引部2による牽引力を転向させて翼100に伝え、翼100を翼引き抜く方向Cにさらに移動させてもよい。こうして、翼環200の周方向端部212(第3転向部404の近傍)まで翼100を移動させた後、第3転向部404を翼環200から取り外して、翼100を翼環200から引き抜いてもよい。
例えば、「同一」、「等しい」及び「均質」等の物事が等しい状態であることを表す表現は、厳密に等しい状態を表すのみならず、公差、若しくは、同じ機能が得られる程度の差が存在している状態も表すものとする。
例えば、四角形状や円筒形状等の形状を表す表現は、幾何学的に厳密な意味での四角形状や円筒形状等の形状を表すのみならず、同じ効果が得られる範囲で、凹凸部や面取り部等を含む形状も表すものとする。
一方、一の構成要素を「備える」、「含む」、又は、「有する」という表現は、他の構成要素の存在を除外する排他的な表現ではない。
2 牽引部
3 紐状部材
4 第1転向部
5 フレーム
8 係止部材
31 第1端部
32 第2端部
33 接続部
35 第1部位
36 第2部位
51,52 支柱部
54 支持棒
100 翼(静翼)
110 静翼ブロック
200 翼環
202 溝又は凹溝
204 遮熱環
210 端部
212 端部
300、400 翼引き抜き装置
304 第2転向部
404 第3転向部
Claims (19)
- 翼環の内周側において前記翼環の周方向に延在する溝に係合した翼を前記溝に沿って前記周方向に引き抜くための翼引き抜き装置であって、
前記翼を牽引するための牽引部と、
前記牽引部と前記翼とを接続する紐状部材と、
前記紐状部材のうち前記牽引部と前記翼との間の部位に接触するように前記翼環に取り付けられ、前記紐状部材を介して伝わる牽引力の方向を転向させるための第1転向部と、
を備えることを特徴とする翼引き抜き装置。 - 前記第1転向部は、前記紐状部材を介して前記翼に伝わる前記牽引力の方向を、前記牽引部と前記第1転向部との間の前記紐状部材に沿った第1牽引方向から、前記第1転向部と前記翼の間の前記紐状部材に沿った第2牽引方向に転向するように構成され、
前記第2牽引方向は、前記第1牽引方向よりも前記翼環の接線方向に近いことを特徴とする請求項1に記載の翼引き抜き装置。 - 前記第1転向部は、前記翼環又は前記翼環に取り付けられる遮熱環に前記周方向に沿って形成された凹溝に係合し、前記周方向に沿って移動可能に構成されていることを特徴とする請求項1又は2に記載の翼引き抜き装置。
- 前記第1転向部は、前記翼環の軸方向において前記翼が占める範囲内に前記紐状部材が位置するように、前記翼環の内周側に取付けられることを特徴とする請求項1乃至3の何れか一項に記載の翼引き抜き装置。
- 前記第1転向部は、前記紐状部材に接触するとともに回転可能に構成された滑車であることを特徴とする請求項1乃至4の何れか一項に記載の翼引き抜き装置。
- 円弧状に分割された状態の前記翼環の両端部に架け渡されるように前記翼環に取り付けられ、前記牽引部を支持するためのフレームをさらに備えることを特徴とする請求項1乃至5の何れか一項に記載の翼引き抜き装置。
- 前記フレームは、
前記翼環の両端部にそれぞれ接続される一対の支柱部と、
前記一対の支柱部に架け渡されるように設けられ、前記牽引部を支持する支持棒と、
を含むことを特徴とする請求項6に記載の翼引き抜き装置。 - 前記牽引部は、前記支持棒に沿ってスライド可能に構成されていることを特徴とする請求項7に記載の翼引き抜き装置。
- 前記牽引部は、前記牽引部と前記第1転向部との間の前記紐状部材に沿った第1牽引方向が前記支柱部に沿うような位置に設置されることを特徴とする請求項8に記載の翼引き抜き装置。
- 前記紐状部材のうち前記牽引部と前記第1転向部との間の部位に接触するように前記フレームに取り付けられ、前記紐状部材を介して伝わる前記牽引力の方向を転向させるための第2転向部をさらに備えることを特徴とする請求項6乃至9の何れか一項に記載の翼引き抜き装置。
- 前記紐状部材のうち前記牽引部と前記第1転向部との間の部位に接触するように前記周方向における前記翼環の一方の端部に取り付けられ、前記紐状部材を介して伝わる前記牽引力の方向を転向させるための第3転向部をさらに備えることを特徴とする請求項1乃至10の何れか一項に記載の翼引き抜き装置。
- 翼環の内周側において前記翼環の周方向に延在する溝に係合した翼を前記溝に沿って前記周方向に引き抜く翼引き抜き方法であって、
前記翼と該翼を牽引するための牽引部とを紐状部材で接続する紐状部材接続ステップと、
前記紐状部材を介して伝わる牽引力の方向を転向させるための第1転向部を、前記紐状部材のうち前記牽引部と前記翼との間の部位に接触するように前記翼環に取り付ける第1転向部取り付けステップと、
前記牽引部によって前記牽引力を発生させ、前記翼を前記周方向に移動させる翼移動ステップと、
を備えることを特徴とする翼引き抜き方法。 - 前記第1転向部取り付けステップでは、前記牽引部と前記第1転向部との間の前記紐状部材に沿った第1牽引方向から、前記第1転向部と前記翼の間の前記紐状部材に沿った第2牽引方向に前記牽引力が転向されるように、前記第1転向部を前記翼環に取り付けるようにし、
前記第2牽引方向は、前記第1牽引方向よりも前記翼環の接線方向に近いことを特徴とする請求項12に記載の翼引き抜き方法。 - 前記翼移動ステップにおける前記翼の移動に応じて、前記第1転向部を前記周方向に沿って移動させる第1転向部移動ステップをさらに備え、
前記第1転向部移動ステップの後、前記翼移動ステップを再び行うことを特徴とする請求項12又は13に記載の翼引き抜き方法。 - 前記紐状部材を介して伝わる前記牽引力の方向を転向させるための第3転向部を、前記紐状部材のうち前記牽引部と前記第1転向部との間の部位に接触するように前記周方向における前記翼環の一方の端部に取り付ける第3転向部取り付けステップをさらに備え、
前記第3転向部取り付けステップの後、前記第3転向部を前記翼環の前記一方の端部に取り付けた状態のまま、前記第1転向部移動ステップを実行する
ことを特徴とする請求項14に記載の翼引き抜き方法。 - 円弧状に分割された状態の前記翼環の両端部に架け渡されるように、前記牽引部を支持するフレームを前記翼環に取り付けるフレーム取り付けステップをさらに備えることを特徴とする請求項12乃至15の何れか一項に記載の翼引き抜き方法。
- 前記フレームは、
前記翼環の両端部にそれぞれ接続される一対の支柱部と、
前記一対の支柱部に架け渡されるように設けられ、前記牽引部を支持する支持棒と、
を含み、
前記牽引部を前記支持棒に沿って移動させ、前記翼の位置に対応して前記牽引部を位置決めする牽引部位置決めステップをさらに備えることを特徴とする請求項16に記載の翼引き抜き方法。 - 前記紐状部材を介して伝わる牽引力の方向を転向させるための第2転向部を、前記紐状部材のうち前記牽引部と前記第1転向部との間の部位に接触するように前記フレームに取り付ける第2転向部取り付けステップをさらに備えることを特徴とする請求項16又は17に記載の翼引き抜き方法。
- 前記翼環からの引き抜き対象が、複数の静翼を含む静翼ブロックであり、
前記静翼ブロックの隣接する前記静翼の間から少なくとも一部が突出するように、前記隣接する前記静翼の間に係止部材を設置する係止部材設置ステップをさらに備え、
前記紐状部材接続ステップでは、前記係止部材の突出部よりも前記静翼の翼根側において、前記静翼ブロックに前記紐状部材を接続することを特徴とする請求項12乃至18の何れか一項に記載の翼引き抜き方法。
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