JP6479328B2 - Rotor and rotary machine - Google Patents

Description

  The present invention relates to a moving blade applied to a steam turbine, a gas turbine or the like, and a rotary machine to which the moving blade is applied.

  In a general steam turbine, a rotor, which is a rotating shaft, is rotatably supported by a casing, and a moving blade is provided on an outer peripheral portion of the rotor, and a stationary blade is provided in the casing. A plurality of wings are alternately arranged. Therefore, the rotor can be rotationally driven via the moving blades by the steam flowing through the moving blades and the stationary blades.

  In such a steam turbine, the moving blade is connected to a blade root fixed to the rotor disk, a platform integrally formed on the blade root, and a base end joined to the platform, and extends to the tip side. And a shroud (integral shroud) connected to the tip of the wing. Then, the moving blades are fixed so that a plurality of base end portions are arranged in parallel along the circumferential direction on the outer peripheral portion of the rotor (a rotor disk), and are assembled annularly so that the shrouds at the tip end portions are in contact with each other. There is.

  The above-mentioned moving blade is radially longer as it goes downstream (high stage-low pressure) in the steam passage, and is twisted by a predetermined angle. Therefore, in the steam turbine, when the operation is started and the rotational speed increases, centrifugal force acts on each moving blade, and a twisting moment in the direction to eliminate the twist formed in advance acts on the blade portion. The shrouds rotate and press against each other, and a shroud reaction force is generated on this pressing surface. On the other hand, during operation of the steam turbine, since the excitation force from the fluid acts on each moving blade, this moving blade vibrates and a frictional force is generated on the contact surface between the shrouds. Since this frictional force has the function of damping the excitation force of the moving blade, conventionally, this frictional force damps the vibration of the moving blade.

  In recent years, for the purpose of achieving high output and high performance of a steam turbine, even if it is an upstream (low stage-high pressure) moving blade in a steam passage, its length tends to be increased. However, since the upstream (low stage-high pressure) moving blade is not twisted, it is not possible to damp the vibration of the moving blade by the frictional force generated on the contact surface between the shrouds. Therefore, as what damps vibration of a moving blade, there are some which were indicated in the following patent documents, for example. The turbine bucket assembly described in Patent Document 1 has a rod-like member inserted in a hole formed between the faces of opposing platform portions of adjacent wings. Moreover, the vibration-proof structure of the rotary-machine wing described in patent document 2 provides a damper piece between platforms, and provides a convex part in this damper piece.

Patent No. 5272094 Unexamined-Japanese-Patent No. 2006-125372

  The technique described in each patent document mentioned above provides another member (a rod-shaped member, a damper piece, and a convex part) between the platforms which all adjoin each other. In a rotating machine such as a steam turbine, in the case of providing a separate member on a rotating part such as a moving blade, separation due to an applied centrifugal force must be surely prevented. Therefore, there is a problem that the structure is complicated.

  The present invention solves the above-mentioned problem, and an object of the present invention is to provide a moving blade and a rotary machine capable of effectively damping vibration.

  The blade according to the present invention for achieving the above object is a blade having a blade root provided at one end of a platform and a blade provided at the other end, the platform comprising the blade root and the blade. And a plurality of divided bodies connected around the main body.

  Therefore, when the platform includes the main body and the plurality of divided bodies connected around the main body, the plurality of divided bodies can be assembled to the main body after the main body of the platform is assembled to the rotating body. Therefore, the platforms of adjacent moving blades can be maintained in contact with each other, a frictional force is generated between the contact surfaces of the platforms, and the exciting force of the moving blades can be attenuated. As a result, regardless of the form of the moving blade, the vibration of the moving blade can be effectively damped.

  In the moving blade of the present invention, the divided body is characterized in that it is connected to the outer peripheral portion of the main body.

  Therefore, by connecting the divided body to the outer peripheral portion of the main body, the small platform main body can be easily assembled to the rotating body.

  In the moving blade of the present invention, the first locking portion is formed in the main body, while the second locking portion is formed in the divided body, and the first locking portion and the second locking portion are locked. It is assumed that the plurality of divided bodies are coupled to each other at the same position.

  Therefore, the main body and the divided body are locked by the respective locking portions, and in this state, the divided bodies are coupled with each other, so that the divided body can be properly engaged with the main body and the main body and the divided body Since the locking is performed by the locking portion, a frictional force is generated between the contact surfaces of the main body and the divided body, and the excitation force of the moving blade can be attenuated.

  In the moving blade of the present invention, the plurality of divided bodies can be assembled from the radial direction with respect to the rotational direction at the front and the rear of the rotating direction of the moving blade in the main body; It is characterized in that it has a pair of second assemblies that can be assembled from the direction of the rotational axis at front and rear portions in the direction of the rotational axis of the moving blade in the main body.

  Therefore, the first assembly is assembled from the radial direction at the front and rear in the rotational direction of the rotor blade in the main body, and the second assembly is mounted at the front and rear in the rotary axial direction of the rotor blade in the main body Thus, each assembly can be assembled such that the platforms of adjacent blades are in contact with each other.

  In the blade of the present invention, the first assembly is I-shaped in a plan view, and the second assembly is U-shaped.

  Therefore, by making the first assembly and the second assembly into an appropriate shape, the assemblability of the split body to the main body can be improved.

  The moving blade of the present invention is characterized in that the first assembly and the second assembly are heat-bonded.

  Therefore, the first assembly and the second assembly can be joined by a simple method of heat bonding.

  In the blade of the present invention, the divided bodies are characterized in that contact surfaces are formed on the front and rear of the main body in the rotational direction of the blade.

  Accordingly, the adjacent platforms contact the contact surfaces of the divided bodies, so that a frictional force is generated between the contact surfaces, and the excitation force of the moving blade can be attenuated.

  In the blade of the present invention, the divided body is characterized by being formed of a composite material containing at least a ceramic material and an elastic material.

  Therefore, the ceramic material can sufficiently ensure the frictional damping of the contact surface between the adjacent platforms, and the elastic material can ensure the sufficient amount of elastic deformation of the platform.

  Further, in the rotary machine according to the present invention, a casing, a rotor rotatably supported in the casing, and a base end portion of a wing portion are supported by the rotor and arranged in plural at predetermined intervals in the circumferential direction of the rotor. It has a plurality of stages of the moving blades, and a plurality of stages of stationary blades fixed at the base end portion and the tip end portion to the casing and alternately arranged with the moving blades.

  Therefore, by assembling the platform main body with the rotary body by assembling the blade platform with the main body and the plurality of divided bodies connected around the main body, the plurality of divided bodies may be assembled with the main body it can. Therefore, the platforms of adjacent moving blades can be maintained in contact with each other, a frictional force is generated between the contact surfaces of the platforms, and the exciting force of the moving blades can be attenuated. As a result, regardless of the form of the moving blade, the vibration of the moving blade can be effectively damped.

  According to the blade and rotary machine of the present invention, since the platform comprises the main body connecting the blade root and the wing and the plurality of divided bodies connected around the main body, the platforms of the adjacent moving blades are The contact state can be maintained, and a frictional force is generated between the contact surfaces of the platform, and the excitation force of the moving blade can be damped, and as a result, regardless of the form of the moving blade, the vibration of this moving blade Can be effectively dampened.

FIG. 1 is a front view of the moving blade of the present embodiment. FIG. 2 is a side view of the moving blade. FIG. 3 is a schematic view showing the arrangement of the moving blades. FIG. 4 is a plan view of the platform. FIG. 5 is a V-V cross-sectional view of FIG. 4. 6 is a cross-sectional view taken along the line VI-VI of FIG. FIG. 7 is an exploded perspective view of the moving blade. FIG. 8 is a plan view showing a platform modification of the present embodiment. FIG. 9 is a plan view showing a platform modification of the present embodiment. FIG. 10 is a schematic configuration diagram showing a steam turbine of the present embodiment.

  Hereinafter, preferred embodiments of a blade and a rotary machine according to the present invention will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited by the embodiments, and in the case where there are a plurality of embodiments, the present invention also includes those configured by combining the respective embodiments.

  FIG. 10 is a schematic configuration diagram showing a steam turbine of the present embodiment.

  In the present embodiment, a steam turbine will be described as an example of the rotary machine of the present invention. In this steam turbine, as shown in FIG. 10, the casing 11 has a hollow shape, and a rotor 12 as a rotating shaft is rotatably supported by a plurality of bearings 13. In the rotor 12, the moving blades 15 are fixed to the outer peripheral portion inside the casing 11 via a rotor disk 14. In this case, the moving blades 15 are provided in a plurality of stages at predetermined intervals in the axial direction of the rotor 12. Further, the casing 11 is positioned between the plurality of stages of moving blades 15, and a plurality of stages of stationary blades 16 are fixed. In the casing 11, a steam passage 17 is formed in a passage in which the moving blades 15 and the stator blades 16 are disposed, a steam supply port 18 and a steam discharge port 19 are provided, and they communicate with the steam passage 17. There is.

  Therefore, when the steam is supplied from the steam supply port 18 to the steam passage 17, the steam passes through the plurality of moving blades 15 and the stationary blades 16 to drive and rotate the rotor 12 through the moving blades 15. While driving a generator (not shown) connected to the rotor 12, the steam that has driven the moving blades 15 is converted to static pressure by an exhaust diffuser (not shown) and then released to the atmosphere from the steam outlet 19. .

  Here, the moving blade 15 of the steam turbine configured as described above will be described in detail. 1 is a front view of the moving blade according to the present embodiment, FIG. 2 is a side view of the moving blade, FIG. 3 is a schematic view showing the arrangement of the moving blade, FIG. 4 is a plan view of the platform, FIG. 4 is a sectional view taken along the line V-V in FIG. 4, FIG. 6 is a sectional view taken along the line VI-VI in FIG. 4, and FIG. 7 is an exploded perspective view of the moving blade.

  In the steam turbine, as shown in FIGS. 1 and 2, the moving blade 15 is composed of a blade root 21, a platform 22, a blade 23, a shroud (integral shroud) 24, and a stub 25. There is. The blade root portion 21 can be fitted and fixed to the rotor disk 14 (see FIG. 10) in the thickness direction. The platform 22 has a curved plate shape integrated with the blade root 21. The wing portion 23 has a base end fixed to the platform 22 and a tip end extending to the inner wall surface side of the casing 11 (see FIG. 10). The shroud 24 is fixed to the tip of the wing 23. The stub 25 is fixed to the middle of the wing 23. The wing portion 23 is linear on the upstream side (low stage-high pressure) in the steam passage 17 and twisted a predetermined angle (for example, about 90 degrees) on the downstream side (high stage-low pressure) in the steam passage 17 ing.

  Here, the configuration of the platform 22 in the moving blade 15 of the present embodiment will be described in detail. As shown in FIGS. 3 to 7, the platform 22 is provided with a blade root 21 at the lower end (one end) and a wing 23 at the upper end (the other end). The platform 22 includes a main body 31 connecting the wing root portion 21 and the wing portion 23, and a plurality of first assemblies 32 (32a, 32b) as a plurality of divided bodies connected around the main body 31 and a second assembly 33 33a, 33b). The first assembly 32 and the second assembly 33 are connected to the outer peripheral portion of the main body 31.

  The main body 31 has a rectangular shape (parallel quadrilateral shape) in plan view (see FIG. 4), and mounting surfaces 41a and 41b are formed on the front and rear sides in the rotational direction Y of the moving blade 15 in the main body 31. In addition, mounting surfaces 42a and 42b are formed on the front side and the rear side in the rotational axis direction X of the moving blade 15 in the main body 31. The mounting surfaces 41a and 41b are inclined at a predetermined angle with respect to the rotational axis direction X, and the mounting surfaces 42a and 42b are parallel to the rotational direction Y.

  The main body 31 has protrusions 43a and 43b as first locking portions formed on the mounting surfaces 41a and 41b, and protrusions 44a and 44b as first locking portions on the mounting surfaces 42a and 42b. The protrusions 43a and 43b are provided on the attachment surfaces 41a and 41b at a plurality of (two in the present embodiment) predetermined intervals. Further, only one protrusion 44a, 44b is provided at the center of the mounting surface 42a, 42b.

  On the other hand, mounting surfaces 51a, 51b are formed on one side of the first assemblies 32a, 32b, grooves 53a, 53b as second locking portions are formed in the mounting surfaces 51a, 51b, and the grooves 53a, 53b are A plurality of (two in the present embodiment) predetermined intervals are provided on the mounting surfaces 51a and 51b. Mounting surfaces 52a and 52b are formed on one side of the second assemblies 33a and 33b. Recesses 54a and 54b as second locking portions are formed on the mounting surfaces 52a and 52b, and the recesses 54a and 54b have a central portion. Only one is provided in the department.

  The grooves 53a and 53b are open at the lower side, and the protrusions 43a and 43b can be locked. The protrusions 44a and 44b can be engaged with the recesses 54a and 54b.

  The first assemblies 32a and 32b have an I shape in plan view, and upper joint portions 61a and 61b are formed at each end in the longitudinal direction, and the second assembly has a U shape and is longitudinal Lower joint portions 62a and 62b are formed at respective end portions in FIG. In the first assembly 32a, contact surfaces 63a and 63b are formed on the other side, that is, on the front and rear sides in the rotational direction Y, respectively.

  The first assemblies 32a and 32b and the second assemblies 33a and 33b are made of a composite material containing at least a ceramic material and an elastic material. Specifically, carbon fiber resin, epoxy resin, ceramic resin and the like are used. Further, a composite material of a ceramic material containing a titanate based on a ceramic group and a carbon nanotube and alumina can be mentioned.

  Here, a method of assembling the moving blade 15 to the turbine disk 14 will be described. First, the blade root portion 21 of the moving blade 15 is moved along the rotational axis direction X, and fitted in the connection groove 14 a formed along the rotational axis direction X in the turbine disk 14. Next, by moving the first assemblies 32a and 32b in the A1 and A2 directions (rotational axis direction X), the first assemblies 32a and 32b are inserted into the space between the wing portions 23 and move in the B1 and B2 directions (rotational direction Y). By moving in the C1 and C2 directions (radial direction), the main body 31 is assembled. At this time, in the first assemblies 32a and 32b, the grooves 53a and 53b engage with the protrusions 43a and 43b. Subsequently, by moving the second assemblies 33a and 33b in the D1 and D2 directions (rotational axis direction X), the recesses 54a and 54b are engaged with the protrusions 44a and 44b.

  Then, in the first assemblies 32a and 32b, the mounting surfaces 51a and 51b adhere closely to the mounting surfaces 41a and 41b of the main body 31, and the second assemblies 33a and 33b have the mounting surfaces 52a and 52b the mounting surface 42a of the main body 31. , 42b closely. Further, the upper joint portions 61a and 61b of the first assemblies 32a and 32b are in close contact with the lower joint portions 62a and 62b of the second assemblies 33a and 33b. In this assembled state, the first assemblies 32a and 32b and the second assemblies 33a and 33b are thermally bonded. In this case, the first assemblies 32a and 32b and the second assemblies 33a and 33b are joined by heating the upper joint portions 61a and 61b and the lower joint portions 62a and 62b.

  As described above, when all the moving blades 15 are assembled to the turbine disk 14, the contact surfaces 63 a and 63 b of the first assembly 32 a constituting the platform 22 are maintained in contact with each other. . Therefore, when the rotor 12 rotates and the moving blades 15 fixed to the rotor disk 14 rotate, a frictional force is generated between the first assemblies 32a and 32b and the contact surfaces 63a and 63b. The excitation force is attenuated.

  Although the two first assemblies 32a and 32b and the two second assemblies 33a and 33b are provided as the plurality of divided bodies to form a four-division configuration, the present invention is not limited to this configuration. 8 and 9 are plan views showing a modified example of the platform of this embodiment.

  As shown in FIG. 8, the moving blade 70 has a platform 71, and the platform 71 includes a main body 31, and a plurality of first assemblies 72 and second assemblies 73 as a plurality of divided bodies. . The first assembly 72 and the second assembly 73 are U-shaped in a plan view, and grooves 72a and 73a are formed as second locking portions that can be engaged with the protrusions 43a and 43b of the main body 31. There is. The first assembly 72 and the second assembly 73 are assembled in the main body 31 by moving in the rotational direction Y and radially after moving in the rotational axis direction X. Thereafter, the main body 31, the first assembly 72 and the second assembly 73 are heat-bonded.

  Further, as shown in FIG. 9, the moving blade 80 has a platform 81, and the platform 81 comprises a main body 31, a first assembly 82 as a plurality of divided bodies, and a second assembly 83. ing. The first assembly 82 and the second assembly 83 are U-shaped in a plan view, and grooves 82a and 83a are formed as second locking portions that can be engaged with the protrusions 43a and 43b of the main body 31. There is. The first assembly 82 and the second assembly 83 are assembled to the main body 31 by moving in the rotational axis direction X. Thereafter, the main body 31, the first assembly 82 and the second assembly 83 are heat bonded.

  As described above, in the moving blade of the present embodiment, in the moving blade 15 in which the blade root 21 is provided at one end of the platform 22 and the blade 23 is provided at the other end, the platform 22 includes the blade root 21 and It has a main body 31 connecting the wings 23 and assemblies 32 and 33 as a plurality of divided bodies connected around the main body 31.

  Therefore, by assembling the platform 22 with the main body 31 and the plurality of assemblies 32 and 33 connected around the main body 31, the main body 31 of the platform 22 is assembled to the turbine rotor 14, and then the plurality of assemblies are assembled to the main body 31. 32, 33 can be assembled. Therefore, the platforms 22 of the adjacent moving blades 15 can be maintained in contact with each other, a frictional force is generated between the contact surfaces of the platforms 22, and the exciting force of the moving blades 15 can be attenuated. As a result, regardless of the form of the moving blade 15, the vibration of the moving blade 15 can be effectively damped.

  And, by making the platform 22 into a divided structure consisting of the main body 31 and a plurality of assemblies 32, 33, when assembling the moving blade 15 to the turbine rotor 14, by assembling the assemblies 32, 33 later, The platforms 22 can be easily brought into contact with each other, there is no need to separately provide a member for damping the excitation force, and the structure can be prevented from being complicated.

  In the moving blade of this embodiment, a plurality of assemblies 32 and 33 are connected to the outer peripheral portion of the main body 31. Therefore, by connecting the plurality of assemblies 32 and 33 to the outer peripheral portion of the main body 31, the main body 31 of the small platform 22 can be easily assembled to the turbine rotor 14.

  In the moving blade of the present embodiment, the projections 43a, 43b, 44a, 44b are formed in the main body 31, while the grooves 53a, 53b and the recesses 54a, 54b are formed in the respective assemblies 32, 33, and the projections 43a, 43b are formed. , 44a and 44b are connected to each other at a position where the grooves 53a and 53b and the recesses 54a and 54b are engaged. Therefore, in order to lock the main body 31 and the respective assemblies 32, 33 and to connect the respective assemblies 32, 33 with each other in this state, the respective assemblies 32, 33 can be properly engaged with the main body 31. Since the main body 31 and the respective assemblies 32 and 33 are only engaged, a frictional force is generated between the contact surfaces of the main body 31 and the respective assemblies 32 and 33 to attenuate the excitation force of the moving blade 15 It can be done.

  In the moving blade of the present embodiment, a pair of first assemblies 32a can be assembled from the radial direction with respect to the rotational direction Y at the front and rear of the rotational direction Y of the moving blade 15 in the main body 31 in each of the assemblies 32 and 33. , 32b, and a pair of second assemblies 33a, 33b that can be assembled from the rotational axis direction X at front and rear portions in the rotational axis direction X of the moving blade 15 in the main body 31. Therefore, the first assemblies 32a and 32b are assembled from the radial direction to the front and rear of the rotor blade 15 in the rotational direction Y of the main body 31, and to the front and rear of the rotor axial direction X of the rotor blade 15 in the main body 31. Since the second assemblies 33a and 33b are assembled in the rotational axis direction X, the assemblies 32a, 32b, 33a and 33b can be assembled such that the platforms 22 of the adjacent moving blades 15 are in contact with each other.

  In the moving blade of this embodiment, the first assemblies 32a and 32b have an I shape in plan view, and the second assemblies 33a and 33b have a U shape. Therefore, by making the first assemblies 32a and 32b and the second assemblies 33a and 33b into appropriate shapes, it is possible to improve the assemblability of the assemblies 32a, 32b, 33a and 33b with respect to the main body 31.

  In the moving blade of the present embodiment, the first assemblies 32a and 32b and the second assemblies 33a and 33b are thermally joined. Therefore, the first assemblies 32a and 32b and the second assemblies 33a and 33b can be easily joined by a simple method of heat bonding.

  In the moving blade of this embodiment, the first assemblies 32a and 32b form contact surfaces 63a and 63b at the front and rear of the rotating direction 15 of the moving blade 15 in the main body 31. Therefore, the adjacent platforms 22 contact the contact surfaces 63a and 63b of the first assemblies 32a and 32b, so that a frictional force is generated between the contact surfaces 63a and 63b. It can be attenuated.

  In the moving blade of this embodiment, the first assemblies 32a and 32b and the second assemblies 33a and 33b are formed of a composite material containing a ceramic material and an elastic material. Therefore, the ceramic material can sufficiently ensure the frictional damping of the contact surface between the adjacent platforms 22, and the elastic material can ensure the sufficient amount of elastic deformation of the platform 22.

  Further, in the rotary machine of the present embodiment, the casing 11, the rotor 12 rotatably supported in the casing 11, and the base end portions of the wing portions 23 are supported by the rotor 12 and the circumferential direction of the rotor 12 is A plurality of stages of moving blades 15 arranged at predetermined intervals in the space, and a plurality of stages of stationary blades 16 in which the base end and the tip are fixed to the casing 11 and arranged alternately with the moving blades 15 The platform 22 of the wing 15 has a main body 31 connecting the wing root portion 21 and the wing portion 23, and assemblies 32 and 33 as a plurality of divided bodies connected around the main body 31.

  Therefore, the platforms 22 of the adjacent moving blades 15 can be maintained in contact with each other, and a frictional force is generated between the contact surfaces of the platforms 22 to attenuate the excitation force of the moving blades 15. As a result, regardless of the form of the moving blade 15, the vibration of the moving blade 15 can be effectively damped.

  In the embodiment described above, the moving blade 15 is configured by the blade root 21, the platform 22, the blade 23, and the shroud 24, but the present invention relates to its shape, manufacturing method (integral structure or separate structure), etc. It is not limited.

  Moreover, although the moving blade of the present invention is applied to a steam turbine and described in the above-described embodiment, the present invention can be applied to any rotary machine such as a gas turbine and a compressor.

11 casing 12 rotor (rotary shaft)
13 Bearing 14 Rotor disc (Rotary body)
15, 70, 80 Rotor blades 16 Stator vanes 17 Steam passage 18 Steam supply port 19 Steam outlet 21 Blade root portion 22, 71, 81 Platform 23 Wing portion 24 Shroud 25 Stub 31 Body 32, 32a, 32b, 72, 82 1st Assembly (split body)
33, 33a, 33b, 73, 83 second assembly (split body)
41a, 41b, 42a, 42b mounting surface 43a, 43b, 44a, 44b projection (first locking portion)
51a, 51b, 52a, 52b mounting surface 53a, 53b, 72a, 83a groove portion (second locking portion)
54a, 54b recessed portion (second locking portion)
61a, 61b upper joint 62a, 62b lower joint 63a, 63b contact surface

Claims (7)

In a moving blade provided with a blade root at one end of the platform and a blade at the other end,
The platform is
A main body connecting the wing root and the wing;
Have a plurality of divided bodies in close contact with each other while being connected to the periphery of said body,
While the first locking portion is formed in the main body, the second locking portion is formed in the divided body, and the plurality of divisions are performed at positions where the first locking portion and the second locking portion are locked. Bodies are combined,
A moving blade characterized by In a moving blade provided with a blade root at one end of the platform and a blade at the other end,
The platform is
A main body connecting the wing root and the wing;
Have a plurality of divided bodies in close contact with each other while being connected to the periphery of said body,
The plurality of divided bodies can be assembled at a front part and a rear part of the main body in the rotational direction of the moving blade in the main body from a radial direction with respect to the rotational direction, and rotation of the moving blade in the main body It has a pair of second assemblies that can be assembled from the axial direction at the front and rear in the axial direction,
The first assembly has an I shape in plan view, and the second assembly has a U shape.
A moving blade characterized by In a moving blade provided with a blade root at one end of the platform and a blade at the other end,
The platform is
A main body connecting the wing root and the wing;
Have a plurality of divided bodies in close contact with each other while being connected to the periphery of said body,
The plurality of divided bodies can be assembled at a front part and a rear part of the main body in the rotational direction of the moving blade in the main body from a radial direction with respect to the rotational direction, and rotation of the moving blade in the main body It has a pair of second assemblies that can be assembled from the axial direction at the front and rear in the axial direction,
The first assembly and the second assembly are heat-bonded together,
A moving blade characterized by The blade according to any one of claims 1 to 3, wherein the divided body is coupled to an outer peripheral portion of the main body. The blade according to any one of claims 1 to 4 , wherein the divided body is provided with contact surfaces at front and rear portions in the rotational direction of the blade in the main body. The moving blade according to any one of claims 1 to 5 , wherein the divided body is formed of a composite material containing at least a ceramic material and an elastic material. With the casing,
A rotor rotatably supported in the casing;
The rotor blade according to any one of claims 1 to 6 , wherein the base end portion of the wing portion is supported by the rotor and a plurality of stages are arranged at predetermined intervals in the circumferential direction of the rotor;
A plurality of stages of stator blades fixed at the base end and the tip to the casing and disposed alternately with the moving blades;
A rotary machine characterized by having:

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