JPH11182494A - Axial flow compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To more quickly and easily perform the work at inserting/installing/ replacing work of an embedded part to a rotary shaft by inserting/installing block pieces forming inclined faces between the embedded part of a moving blade and the rotary shaft. SOLUTION: A moving blade 15 has a continuously integrally formed embedded part 20, and has screw shafts 22a and 22b in notch grooves 21a and 21b formed in both end bottom parts of the embedded part 20, and the embedded part 20 is fixed to a rotary shaft 14 by block pieces 23a and 23b by inserting/ installing the block pieces 23a and 23b having inclined faces 25a and 25b. At inserting/installing/replacing work of the embedded part 20 of the moving blade 15 to the rotary shaft 14, the rotary shaft 14 is not damaged since the block pieces 23a and 23b are constituted to be moved so as to be attachable to the embedded part 20 and the rotary shaft 14 by using the inclined faces 25a and 25b of the block pieces 23a and 23b while reciprocally rotating the screw shafts 22a and 22b thread-mounted on the block pieces 23a and 23b by interposing the block pieces 23a and 23b between the embedded part 20 and the rotary shaft 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axial compressor and, more particularly, to an axial compressor in which a rotor blade implanted on a rotating shaft is improved.

[0002]

2. Description of the Related Art In general, an axial-flow compressor forms a compressor stage by combining a moving blade and a stationary blade, and the compressor stages are arranged in multiple stages along an axial direction of a rotating shaft. The drive fluid generated during rotation, for example, the kinetic energy of air is converted into pressure (static pressure) by a stationary blade to increase the pressure of the drive fluid, and its structure is shown in FIG.

[0003] The axial-flow compressor is configured as a compressor stage 5 by combining a rotating shaft (rotor) 2 housed in a casing 1 with a moving blade 3 and a stationary blade 4 along the flow of a driving fluid FL. The machine stage 5 is arranged in multiple stages.

[0004] The rotor blades 3 are implanted on the rotary shaft 2 with a backing plate 7 interposed in the implanted portion 6, and both ends thereof are fixed by caulking portions 8, and along the circumferential direction of the rotary shaft 2. It is arranged as an annular cascade.

The stationary blade 4 has a bottom fixed to the casing 1 and a top supported by a diaphragm inner ring 10 provided with a seal fin 9. Are arranged along an annular cascade.

[0006] Further, as shown in FIG. 36, the moving blade 3 is inserted into the implantation groove 11 of the rotating shaft 2 by interposing a backing plate 7 on the implantation portion 6 formed in a tab tail shape, and implanting the tab tail shape. Pressing force (surface pressure) F applied from the slope 12 of the part 6
And is fixedly supported on the rotating shaft 2.

As described above, in the conventional axial flow compressor, the implanted portion 6 of the rotor blade 3 is formed in a tab tail shape, and its slope 12
And fixed to the rotating shaft 2 using the pressing force F of the above, and resists the centrifugal stress generated during operation, the bending stress and the excitation stress by the driving fluid FL.

[0008]

The capacity of recent axial flow compressors has been increased due to the progress of technological development, and the centrifugal stress, bending stress, and excitation stress generated in the rotor blades 3 due to this increase have conventionally been reduced. It is much higher than that.

In the rotor blade 3 under such severe conditions, when the implanted portion 6 is implanted on the rotating shaft 2 as in the prior art, it is fixedly supported by the caulking portion 8 or is implanted with the implanted portion 6. When the backing plate 7 is interposed between the groove 11 and the groove 11, there are some problems and disadvantages.

First, if the implanted portion 6 of the rotor blade 3 is inserted into the implanted groove 11 of the rotating shaft 2 and caulking is performed when the caulking portion 8 is provided, the rotating shaft 2 may be damaged. Occurs
It becomes difficult to maintain high strength. Further, if the coking operation is insufficient, the pressing force F of the implanted portion 6 against the implanted groove 11 is insufficient, and it is uneasy whether or not to resist centrifugal stress or the like generated during operation.

Second, the rotor blade 3 applies a pressing force to the implantation groove 11 with the backing plate 7 interposed from the implantation portion 6, and the adhesive force increases due to the influence of heat generated during operation. But
During the replacement work of the rotor blade 3, galling occurred between the implanted portion 6, the backing plate 7, and the implanted groove 11, and the rotating shaft 2 was sometimes damaged.

Third, every time the blade 3 is replaced, the rotating shaft 2
In such a case, a new caulking part must be obtained each time the caulking operation is performed, which is a factor of weakening the strength of the rotating shaft 2.

Fourth, in the conventional means for fixing the moving blade 3 to the rotating shaft 2, for example, a bearing disassembling operation or a rotating shaft 2
There is a problem that not only does the worker require more labor such as lifting work, but also the work time is lengthened and many problems are hindered in the short-term resumption of operation.

As described above, in the conventional axial flow compressor, there are some problems described above, and the work of inserting and replacing the implanted portion 6 of the moving blade 3 to the rotating shaft 2 is facilitated and in a short time. Work improvements that could be performed were desired.

The present invention has been made based on such a demand, and an axial flow compressor which can perform the operation faster and more easily when inserting and replacing a rotor blade with a rotating shaft. The purpose is to provide.

[0016]

SUMMARY OF THE INVENTION In order to achieve the above object, an axial compressor according to the present invention is fixed to a moving blade implanted on a rotating shaft and a casing. In an axial flow compressor in which a compressor stage is configured in combination with a stationary blade and the compressor stages are arranged in multiple stages in the axial direction, a block piece having a slope formed between the implanted portion of the moving blade and the rotating shaft. Is inserted.

In order to achieve the above object, in the axial compressor according to the present invention, the implant portion has at least one of the bottom portions at both ends at a slope corresponding to the slope of the block piece. In which notched grooves are formed.

According to a third aspect of the present invention, there is provided an axial-flow compressor comprising:
At least one of both ends is provided with a protruding piece.

In order to achieve the above object, in the axial compressor according to the present invention, the block piece is formed by screwing a screw shaft provided with a positioning piece.

In order to achieve the above object, in the axial compressor according to the present invention, as described in claim 5, the block piece is provided with a caulking portion for preventing rotation of the screw shaft.

In order to achieve the above object, an axial flow compressor according to the present invention is a combination of a moving blade mounted on a rotating shaft and a stationary blade fixed to a casing. In the axial flow compressor in which the compressor stage is configured and the compressor stage is arranged in multiple stages in the axial direction, a block integrally forming a projecting piece with a slope between the implanted portion of the bucket and the rotating shaft. And a fastening member for fixing the block piece to the rotating shaft.

In order to achieve the above object, in the axial flow compressor according to the present invention, the implant portion has a block piece integrally formed with a projecting piece on at least one of the bottom portions at both ends. Are provided to correspond to the slopes of FIG.

In order to achieve the above object, the axial flow compressor according to the present invention is configured such that the rotating shaft comprises:
A cutout groove is provided on at least one of both ends.

In order to achieve the above object, an axial flow compressor according to the present invention is a combination of a moving blade implanted on a rotating shaft and a stationary blade fixed to a casing. Construct a compressor stage, in an axial compressor in which the compressor stages are arranged in multiple stages in the axial direction, between the slope provided at the bottom of both ends of the implanted portion of the rotor blade, between the implanted portion and the rotating shaft A fastening member which is inserted and extends along the axial direction, a block piece which is screwed to both ends of the fastening member, and has a slope provided in correspondence with the slope provided in the implanted portion, and A caulking portion for preventing rotation is provided.

In order to achieve the above object, in the axial flow compressor according to the present invention, the rotating shaft houses a notch groove into which a block piece is inserted and a fastening member. And a groove extending in the axial direction.

In order to achieve the above object, the axial flow compressor according to the present invention is characterized in that, as described in claim 11, the notch groove provided in the rotary shaft is stepped. is there.

In order to achieve the above object, an axial flow compressor according to the present invention is a combination of a moving blade implanted on a rotating shaft and a stationary blade fixed to a casing. In the axial flow compressor in which the compressor stage is configured and the compressor stage is arranged in the axial direction, the notch groove provided in the implanted portion of the rotor blade, the notched groove provided in the rotary shaft, and the provided in the implanted portion A block piece housed between the notch groove and the notch groove provided on the rotary shaft, a support piece for supporting the block piece, and a caulking portion formed on the block piece.

In order to achieve the above object, in the axial compressor according to the present invention, the block piece is provided with a notch groove corresponding to the notch groove of the implantation part. is there.

In order to achieve the above object, the axial-flow compressor according to the present invention is characterized in that the support piece has one of an L-shape and an inverted L-shape. Is what you do.

In order to achieve the above object, an axial flow compressor according to the present invention is characterized in that a moving blade implanted on a rotating shaft and a stationary blade fixed to a casing are combined. In the axial compressor in which the compressor stages are configured and the compressor stages are arranged in multiple stages in the axial direction, a support plate having inverted portions provided at both ends is provided between the implanted portion of the bucket and the rotating shaft. It was done.

In order to achieve the above object, an axial-flow compressor according to the present invention is characterized in that the reversing portion has a center shaft inserted therein and a slope provided at the bottom of both ends of the implanting portion. Is provided with an inclined surface to be contacted.

In order to achieve the above object, in the axial compressor according to the present invention, the support plate is provided with a raised portion to be accommodated in a groove provided in the rotary shaft. is there.

In order to achieve the above object, in the axial compressor according to the present invention, the support plate is formed by inverting the strip-shaped plate so as to correspond to the slope of the implanted portion. In addition to the provision of a portion, a slit is provided at an end portion, and the inverted portion is formed through the slit.

In order to achieve the above object, in the axial compressor according to the present invention, the support plate is formed by inverting the belt-like plate and providing a double inversion portion at one end. In addition, a locking portion is provided at the other end.

In order to achieve the above object, in the axial compressor according to the present invention, as described in claim 20, the double reversing section reverses one of the reversing sections toward the implanting section and the other reversing section. One is inverted to the rotation axis side.

In order to achieve the above object, in the axial compressor according to the present invention, both of the double reversing parts are provided with a reversal inward between the implantation part and the rotating shaft. It was made.

In order to achieve the above object, in the axial compressor according to the present invention, the locking portion is formed in a trapezoidal shape.

In order to achieve the above object, in the axial compressor according to the present invention, as described in claim 23, the support plate is formed by reversing a belt-like plate and providing a double reversing part at one end. In addition, a locking portion is provided at the other end, and a mandrel is inserted between the double reversing portions along the axial direction.

In order to achieve the above object, in the axial compressor according to the present invention, as described in claim 24, the double reversing portion and the locking portion allow the shaft to be inserted in the transverse direction. It is a thing.

In order to achieve the above object, in the axial flow compressor according to the present invention, the support plate is formed by inverting the strip-shaped plate and reinforcing pieces are provided on the inverted end. It is inserted.

In order to achieve the above object, an axial flow compressor according to the present invention is a combination of a moving blade implanted on a rotating shaft and a stationary blade fixed to a casing. Construct a compressor stage, in an axial flow compressor in which the compressor stages are arranged in multiple stages in the axial direction, a support plate is installed between the implanted portion of the rotor blade and the rotating shaft, and the support plate has a band shape. The plate is turned over, a bent portion is provided at one end, and a locking portion is provided at the other end.

In order to achieve the above object, in the axial flow compressor according to the present invention, the support plate has a strip formed between the bent portion and the locking portion. Things.

In order to achieve the above object, an axial flow compressor according to the present invention is a combination of a moving blade mounted on a rotating shaft and a stationary blade fixed to a casing. In the axial compressor in which the compressor stage is configured and the compressor stage is arranged in multiple stages in the axial direction, a support plate is installed between the implanted portion of the rotor blade and the rotating shaft, and the support plate is provided at both ends. A support piece is provided.

In order to achieve the above object, in the axial flow compressor according to the present invention, the support plate is made of an elastic material.

In order to achieve the above object, an axial flow compressor according to the present invention is a combination of a moving blade implanted on a rotating shaft and a stationary blade fixedly mounted on a casing. In the axial flow compressor in which a compressor stage is configured and the compressor stages are arranged in multiple stages in the axial direction, a notch groove is provided in the implanted portion of the moving blade and the rotating shaft, while a notched groove in the implanted portion of the moving blade is provided. A fixed shaft is provided between the shaft and the notched groove of the rotating shaft, and a rotation preventing portion formed continuously and integrally with the fixed shaft is provided.

In order to achieve the above object, in the axial flow compressor according to the present invention, the rotation preventing portion formed continuously and integrally with the fixed shaft is formed by a shaft. A cutout portion is provided at the tip of the device to form a split piece, and the split piece is inverted.

In order to achieve the above object, the axial flow compressor according to the present invention is characterized in that the fixed shaft is formed in an oval shape.

In order to achieve the above object, the axial flow compressor according to the present invention is such that the notched groove of the implanted portion of the moving blade accommodating the fixed shaft is provided with a concave portion. is there.

In order to achieve the above object, an axial flow compressor according to the present invention is a combination of a rotor blade implanted on a rotating shaft and a stationary blade fixedly mounted on a casing. In the axial flow compressor in which a compressor stage is configured and the compressor stages are arranged in multiple stages in the axial direction, a notch groove is provided in the implanted portion of the moving blade and the rotating shaft, while a notched groove in the implanted portion of the moving blade is provided. A fixed shaft extending in the axial direction and having a projection in the circumferential direction is provided between the fixed shaft and the notched groove of the rotary shaft.

[0050]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an axial compressor according to the present invention will be described below with reference to the accompanying drawings and reference numerals in the drawings.

FIGS. 1 to 3 are schematic views showing a first embodiment of an axial compressor according to the present invention. 1 is a schematic cross-sectional view of an axial compressor according to the present invention, FIG. 2 is a diagram illustrating an assembly procedure of the axial compressor according to the present invention, and FIG. 3 is a BB arrow of FIG. The front views viewed from the viewing direction are shown.
2A is a diagram illustrating an initial stage of an assembly operation of the axial compressor according to the present invention, and FIG. 2B is a diagram illustrating a state at the time of completion of the assembly operation.

In the axial compressor according to the present embodiment, the driving fluid F is applied to the rotating shaft (rotor) 14 housed in the casing 13.
The compressor stage 17 is configured by combining the moving blade 15 and the stationary blade 16 along the flow of L, for example, air or gas, and the compressor stage 17 is arranged in multiple stages in the axial direction.

In addition, the stationary blade 16 has a casing 13 at the bottom.
And is supported by a diaphragm inner ring 19 provided with a seal fin 18 at the top, and is arranged as an annular cascade along the circumferential direction of the rotating shaft 14.

On the other hand, the moving blade 15 has an implanted portion 20 formed continuously and integrally, and block pieces 23a and 23b having screw shafts 22a and 22b in notched grooves 21a and 21b formed at the bottoms of both ends of the implanted portion 20. And insert the block piece 23
The implanting part 20 is fixed to the rotating shaft 14 by a and 23b.

Next, the implantation portion 20 of the moving blade 15 is moved to the rotating shaft 1.
4 will be described.

As shown in FIG. 2 (a), the implanted portion 20 has a notched groove 21 having a slope 24a provided at the bottom of one end thereof at the bottom at one end in the direction of rising to the right along the flow of the driving fluid FL.
a notch groove 2 having an inclined surface 24b formed at the bottom of the other end along the flow of the driving fluid FL in an upward right direction.
1b.

In fixing the implanted portion 20 to the rotating shaft 14, first, a screw shaft 22a is provided by utilizing a slope 24a of a cutout groove 21a formed at one end of the implanted portion 20,
After the block piece 23a provided with the slope 25a is inserted, as shown in FIG.
Move along R (axial entry). The screw shaft 22a is formed by selecting a screw hole 26a, for example, any one of a hexagonal hole, a slotted hole, a cross-shaped hole, and a square hole.

When the implanted portion 20 reaches a predetermined set position with respect to the rotating shaft 14, the notch groove 2 formed at the other end is formed.
The block piece 23b is inserted using the slope 24b of 1b. The block piece 22b is formed on the slope 2 of the notch groove 21b.
4b, a screw shaft 22 formed on one side with a slope 25b and integrally formed with a disc-shaped positioning piece 27.
b is screwed. The screw shaft 22b has a screw hole 26b formed by selecting any one of a hexagonal hole, a slotted hole, a cross-shaped hole, and a square hole.

When the block piece 23b is inserted into the implanted portion 20 and the implanted portion 20 is further moved in the axial direction, the block piece 23b is moved to the end face 2 of the groove 28 formed in the rotary shaft 14.
9 and the protrusion 30. Then, when the positioning piece 27 of the block piece 23b comes into contact with the end face 29 of the groove 28, the implantation portion 20 stops moving and is set on the rotating shaft 14 as shown in FIG.

The blade 15 set on the rotary shaft 14 in this manner turns the screw shaft 22b through the screw hole 26b,
The slope 25b of the block piece 23b is connected to the slope 2 of the implantation portion 20.
4b, and further tightened as shown in FIG.
At the same time the inclined surface 25b of the block piece 23b on the slope 24b of the implanting portion 20 gives a pressing force F _1, the slope 31a of the implanting portion 20 formed in the dovetail shape, slope 33a of implantation groove 32 of the rotary shaft 14 from 31b, and 33b Pressing force F
Give _two . At this time, the block piece 23b is press force F ₃ is generated as a reaction of the above-described pressing force F _1, F _2, it is pressed against the groove 28 of the rotary shaft 14 by the pressing force F3.

Next, as shown in FIG. 2A, the moving blade 15 turns the screw shaft 22a on the opposite side to the screw shaft 22b through a screw hole 26a, and the slope 25a of the block piece 23a.
Is brought into contact with the slope 24a of the implanted portion 20 and further tightened to generate a pressing force.
Push up.

Finally, as shown in FIG. 3, both the block pieces 23a and 23b form caulked portions 34a and 34b so that the screw shafts 22a and 22b do not rotate in reverse.

On the other hand, when replacing the rotor blade 15, first,
Swaging portions 34a, 3 provided on block pieces 23a, 23b
4b is removed, and the screw shafts 22a and 22b are turned in the opposite direction to that at the time of assembling, and the implanted portions 2 are removed from the block pieces 23a and 23b.
0 and each pressing force F _{1 applied} to the groove 28 of the rotating shaft 14.
Lowering the to F _3, pulling block pieces 23a, 23b are grooves 21a of the implanting portion 20, from 21b, finally, the moving blade 1
5 is separated from the rotating shaft 14 along the axial direction.

As described above, according to the present embodiment, when inserting and replacing the implanted portion 20 of the rotor blade 15 with respect to the rotating shaft 14, the block pieces 23 a, 23 are disposed between the implanted portion 20 and the rotating shaft 14. 23b, and block pieces 23a, 23b
The screw shafts 22a and 22b screwed to the shaft are rotated in the forward and reverse directions, and the inclined surfaces 25a and 25 of the block pieces 23a and 23b are rotated.
b, the block pieces 23a and 23b can be detachably moved with respect to the implantation portion and the rotating shaft.
The insertion and replacement of the implanted portion 20 with respect to the rotating shaft 14 can be performed faster and more easily without damaging the rotating shaft 14 as compared with the related art.

In this embodiment, the groove 28 of the rotating shaft 14 is used.
A protruding piece 30 is provided on one end of the screw shaft 22b, and a positioning piece 2 is provided on one end of a screw shaft 22b screwed to the block piece 23b.
7, the block piece 23b is inserted into the groove 2 of the rotating shaft 14.
8 can be easily and reliably inserted.

FIG. 4 is a schematic sectional view showing a first modification of the first embodiment of the axial compressor according to the present invention. The same components as those of the first embodiment are denoted by the same reference numerals.

In this embodiment, block pieces 23a and 23b are interposed between the rotating shaft 14 and both ends of the implanted portion 20 formed continuously and integrally with the rotor blade 15, and the block pieces 23a and 23b
Are fixed to the rotating shaft 14 via fastening members 35a and 35b.

The implanting section 20 has a slope 36a at the bottom at one end, which is located at the bottom at one end in the direction to the lower right along the flow direction of the drive fluid FL, and the drive fluid FL at the bottom at the other end.
The slope 36b is provided in the upward direction along the flow direction.

Further, the block pieces 34a and 34b correspond to the slopes 36a and 36b of the implanted portion 20 and the slopes 37a and 36b.
It has a structure provided with protruding pieces 38a, 38b provided with a, 37b.

The rotating shaft 14 is provided with a stepped notch groove 39.
a, 39b, and the block pieces 23a, 23b inserted in accordance with the notched grooves 39a, 39b are fastened to the fastening members 35a, 35b.
It is fixed with b.

The moving blade 15 having such a configuration is capable of moving the implant 20 in the axial direction of the rotating shaft 14, specifically, the driving fluid F.
After being inserted from the opposite direction to the flow of L, the block piece 23
a, 23b and slope 32 of projecting pieces 38a, 38b
7a and 37b are brought into contact with the slopes 36a and 36b of the implantation portion 20, and the notches 39a and 39b of the rotary shaft 14 are formed.
Then, the bottoms of the block pieces 23a and 23b are inserted and assembled. When the implant 20 presses the rotating shaft 14 through the block pieces 23a and 23b, the fastening members 35a and 35b
Is coupled to the rotating shaft 14.

On the other hand, when replacing the rotor blade 15, first,
Fastening members 35a, 35b and block pieces 23a, 23
b is removed from the rotating shaft 14, and then the implant 20 is separated from the rotating shaft 14 in the axial direction.

As described above, according to the present embodiment, when inserting and replacing the implanted portion 20 of the rotor blade 15 with respect to the rotating shaft 14, the implanted portion 20 is provided with the slopes 36 a and 36 b, Are provided with notches 39a and 39b, and the slopes 36a and 36b of the implantation portion 20 and the notches 3a of the rotating shaft 1 are provided.
9a and 39b, the block members 23a and 23b are interposed between the implanted portion 20 and the rotating shaft 14, and the fastening members 3
5a, 35b, the rotation shaft 14
The insertion and replacement of the implanted portion 20 with respect to the rotating shaft 14 can be performed faster and more easily without damaging the implant.

In this embodiment, the block pieces 23a, 23
3b are provided with projecting pieces 38a, 38b formed continuously and integrally, and slopes 37a, 37b of the projecting pieces 38a, 38b are provided.
The slopes 36a and 36b of the implanted portion 20 are brought into contact longer by using the
It can be fixed securely.

FIG. 5 is a schematic diagram showing a second modification of the first embodiment of the axial compressor according to the present invention. In addition,
The same parts as those in the first embodiment are denoted by the same reference numerals. 5A is a diagram illustrating an initial stage of an assembling operation of the axial compressor according to the present invention, and FIG. 5B is a diagram illustrating a time when the assembling operation is completed.

In the present embodiment, the block pieces 40a and 40b which are interposed between the implanted portion 20 of the rotor blade 15 and the rotary shaft 14 and are screwed to both ends of a fastening member 42 extending along the axial direction.
Thus, the implanted portion 20 of the moving blade 15 is fixed to the rotating shaft 14.

The implanting section 20 has a slope 36a at the bottom at one end, at the bottom at one end, and a slope 36a in the lower right direction along the flow direction of the drive fluid FL, and at the bottom at the other end, a slope at the right in the flow direction of the drive fluid FL. Is provided in the direction of.

Further, the block pieces 40a and 40b correspond to the slopes 36a and 36b of the implanted portion 20 so as to correspond to the slopes 37a and 36b.
a and 37b. Further, the block pieces 40a,
40b, one block piece 40a forms a screw portion 41a counterclockwise, and the other block piece 40b
Forms a clockwise screw portion 41b. On the other hand, the fastening member 42 has screw holes 43a,
43b and the block pieces 40a, 40b
The rotation is prevented by caulking portions 44a and 44b provided on the bottom.

Next, the implanted part 20 of the moving blade 15 is
4 will be described.

First, the fastening member 42 is previously provided with block pieces 40a, 40b at both ends thereof via screw portions 41a, 41b.
b is screwed. The fastening member 42 includes a block piece 40a,
After screwing 40b, it is installed on the rotating shaft 14 as shown in FIG. After installing the fastening member 42 on the rotating shaft 14, the implanted portion 20 of the bucket 15 is inserted into the rotating shaft 14 in the direction of the arrow AR. When the implant 20 is inserted into the rotating shaft 14, the block pieces 40 a and 40 b
At the same time, it is moved in the radial direction on the side of the implantation section 20. The block pieces 40a, 40b and the fastening member 42
0 in the radial direction, the block pieces 40a, 40b
Is tightened via the threaded portions 41a and 41b, and the slopes 37a and 37b are brought into contact with the slopes 36a and 36b of the implant 20 as shown in FIG. 5B. At this time,
The block pieces 40a and 40b apply a pressing force F to the implantation portion 20.
Together give _1, block piece 40a from the implanted portion 20 as a reaction, the pressing force F ₂ applied to 40b, implanting portion 20 in this manner is fixed to the rotary shaft 14. After the implantation part 20 is fixed to the rotating shaft 14, the block pieces 40 a and 40 b form caulking parts 44 a and 44 b to prevent the rotation of the fastening member 42.

On the other hand, when replacing the moving blade 15, the swaging portions 44a and 44b provided on the block pieces 40a and 40b are removed, the fastening member 42 is rotated through the screw holes 43a and 34b, and the block pieces 40a and 40b are further rotated. After moving 40 b in the radial direction on the rotating shaft 14 side, the implantation section 20 is pulled away from the rotating shaft 14.

As described above, according to the present embodiment, when the implanted portion 20 of the rotor blade 15 is inserted into and replaced with the rotary shaft 14, the fastening member 42 is inserted between the implanted portion 20 and the rotary shaft 14.
The implanted portion 20 is fixed to the rotating shaft 14 by interposing the block pieces 40a and 40b screwed to both ends of the implanted portion 20a.
More quickly inserts and replaces the rotary shaft 14
It can be performed even more easily.

FIGS. 6 and 7 are schematic sectional views showing a third modification of the first embodiment of the axial compressor according to the present invention. The same components as those of the first embodiment are denoted by the same reference numerals. 6A is a view for explaining the initial stage of the assembly work of the axial compressor according to the present invention, and FIG.
FIG. 7 is a view for explaining the completion of the assembling work, and FIG.
It is the front view seen from the arrow C direction.

In this embodiment, the notch grooves 4
5a and 45b, and notch grooves 45a and 45b
A groove 46 is provided between the cutout grooves 45a, 45 along the axial direction.
b and the groove 46, the fastening member 42 having the block pieces 40a, 40b screwed on both ends is installed and accommodated.
The implanted portion 20 of the moving blade 15 is fixed to the rotating shaft 14 at a and 40b.

The implant portion 20 has slopes 36a and 36b at the bottoms at both ends, as in the second modification of the first embodiment, and also has slopes 37a and 40b on the block pieces 40a and 40b corresponding to the slopes 36a and 36b. 37b is provided.

Further, the block pieces 40a and 40b are also
As in the second modification of the embodiment, the screw portions 41a,
41b. Further, the fastening member 42 has screw holes 43a, 43b such as hexagonal holes at both ends, and as shown in FIG.
The caulking portions 44a and 44b are provided. The other configuration is the same as that of the second modification of the first embodiment.

Next, the implanted portion 20 of the moving blade 15 is moved to the rotating shaft 1.
4 will be described.

First, similarly to the second modified example of the first embodiment, the fastening member 42 has screw portions 41 at both ends thereof in advance.
The block pieces 40a, 40b are screwed through the a, 41b. The fastening member 42 includes the block pieces 40a, 40b.
After being screwed in, as shown in FIG. 6A, the rotary shaft 14 is set and housed in the cutout grooves 45a, 45b and the groove 46. After installing the fastening member 42 in the groove 46 of the rotating shaft 14, the moving blade 15
Is inserted into the rotating shaft 14 in the direction of the arrow AR. When the implant 20 is inserted into the rotating shaft 14, the block pieces 40 a and 40 b are moved together with the fastening member 42 in the radial direction on the implant 20 side, and as shown in FIG. It is installed in the notch grooves 45a and 45b. After setting the block pieces 40a, 40b and the fastening member 42 in the notch grooves 45a, 45b of the rotating shaft 14, the block pieces 40a, 40b are tightened again via the screw portions 41a, 41b, and the slopes 37a, 37b are implanted. The slopes 36a and 36b of the part 20 are brought into contact. At this time, the block piece 4
0a, 40b, as shown in FIG.
a, the slope 37a of 40b, slopes 36a of the implanting portion 20 from 37b, 36b at the same time giving the pressing force F _1, the slope 31a of the implanting portion 20 formed in the dovetail shape, 31b
The pressing force F is also applied to the implantation grooves 33a and 33b of the rotating shaft 14.
Give _two . Then, block pieces 40a, 40b are pressing force F ₃ is generated as a reaction of the above-described pressing force F _1, F _2, notched grooves 45a of the rotary shaft 14 by the pressing force F _3,
45b. Block pieces 40a, 40b
Forms caulking portions 44a and 44b after being fixed to the rotating shaft 14.

On the other hand, when replacing the moving blade 15, first,
Swaging portions 44a, 4 provided on block pieces 40a, 40b
4b is removed, the fastening member 42 is rotated through the screw holes 43a and 43, and the block pieces 40a and 40b are further moved in the radial direction of the rotation shaft 14, and then the implanted portion 20 is separated from the rotation shaft 14.

As described above, in this embodiment, the notch grooves 45a and 45b are provided at both ends of the rotary shaft 14, and the notch grooves 4a and 45b are provided.
A groove 46 is provided along the axial direction between 5a and 45b, and block pieces 40a and 40b are installed in the cutout grooves 45a and 45b.
Since the gap between the groove 46 accommodating the fastening member 42 is narrowed to reduce the gap between the implanted portion 20 and the rotating shaft 14, the leakage of the driving fluid from the gap can be reduced, and the moving blade 1
5 can do more work.

FIG. 8 is a schematic sectional view showing a fourth modification of the first embodiment of the axial flow compressor according to the present invention. The same components as those of the first embodiment are denoted by the same reference numerals. 8A is a diagram illustrating an initial stage of an assembly operation of the axial compressor according to the present invention, and FIG. 8B is a diagram illustrating a time when the assembly operation is completed.

In this embodiment, as in the third modification of the first embodiment, notch grooves 45a, 45
b, a groove 46 is provided along the axial direction between the notch grooves 45a and 45b, and the fastening member 42 accommodated in the groove 46 is provided.
Notch grooves 47a, 47b are also provided in the block pieces 40a, 40b screwed to both ends of the block through screw portions 41a, 41b, and the block pieces 40a, 40b are connected through the respective notch grooves 45a, 45b, 47a, 47b. This is in contact with the rotating shaft 14. The other configuration is the same as that of the third modification of the first embodiment.

In this embodiment, the notch grooves 45a,
45b, and notch grooves 47a, 47b in the block pieces 40a, 40b.
b, 47a, 47b and the implanted portion 20
And the fastening members 42 screwed to the block pieces 40a and 40b are not protruded from both end faces of the rotating shaft 14, so that a diaphragm inner ring (not shown) of a stationary blade installed next to the moving blade 15 is provided. Can be prevented, and the agitation loss of the driving fluid FL leaking to the implanting section 20 can be suppressed low.

FIGS. 9 and 10 are schematic views showing a fifth modification of the first embodiment of the axial compressor according to the present invention. The same components as those of the first embodiment are denoted by the same reference numerals. FIG. 9 is a schematic sectional view of the axial compressor according to the present invention, and FIG. 10 is a front view as seen from the direction of arrows DD in FIG.

In this embodiment, the block pieces 40a, 4b are provided between the concave notches 48a, 48b provided in the implanted portion 20 of the rotor blade 15 and the notches 49a, 49b provided in the rotary shaft 14.
0b and the supporting pieces 50a, 50b,
0 is fixed to the rotating shaft 14.

The block pieces 40a, 40b are
The convex notch grooves 51a and 51b are formed corresponding to the 0 concave notch grooves 48a and 48b. Also, the support piece 50
a and 50b are formed in an L-shape and an inverted L-shape, and the block pieces 40a and 40b and the cutout grooves 49a and 49
b, and is configured to support the block pieces 40a, 40b.

As shown in FIG. 10, the support pieces 50a and 50b form, for example, hexagonal screw holes 52a and 52b, and the block pieces 40 are formed through the screw holes 52a and 52b.
a, 40b can be detachably attached. Further, the block pieces 40a, 40b
Are formed with caulking portions 44a and 44b so that the support pieces 50a and 50b are not separated from the rotating shaft 14 during operation.

Next, the implanted portion 20 of the rotor blade 15 is
4 will be described.

First, as shown in FIG.
The tab tail-shaped implanted portion 20 is inserted into the rotating shaft 14 from the axial direction. After the implantation portion 20 is inserted into the rotating shaft 14, the block pieces 40a and 40b are moved to the rotating shaft 14 as shown in FIG.
Insert from both ends. In this case, the block pieces 40a, 4
0b is brought into contact with the notched grooves 49a and 49b of the rotating shaft 14 and then moved in the radial direction of the rotating shaft 14 so that the implantation portion 20
To the notched grooves 51a, 51b.

Next, the support pieces 50a, 50b are formed by the block pieces 40a, 40b and the notch grooves 49a, 49b of the rotary shaft 14.
Insert between. Furthermore, the block pieces 40a, 4b are so positioned that the support pieces 50a, 50b do not come off the rotary shaft 14.
At 0b, caulking portions 44a and 44b are formed. In addition, you may fix by welding instead of the caulking parts 44a and 44b.

On the other hand, when replacing the rotor blade 15, first,
Swaging portions 44a, 4 provided on block pieces 40a, 40b
4b is removed, and the support pieces 50a and 50b are further removed from the rotating shaft 14. The support pieces 50a, 50b are
, The block pieces 40a, 40b move in the radial direction of the rotating shaft 14, and the notch grooves 49a,
After being brought into contact with 49b, it is separated from the rotating shaft 14. When the block pieces 40a and 40b are separated from the rotating shaft 14, the implant 20 separates along the axial direction of the rotating shaft 14.

As described above, according to the present embodiment, when inserting and replacing the implanted portion 20 of the moving blade 15 with respect to the rotary shaft 14, the cutout groove 48 formed in a stepped shape of the implanted portion 20.
a, 48b, the notch grooves 51 of the block pieces 40a, 40b.
a, 51b are engaged, and the block pieces 40a,
The support pieces 50a, 50b are inserted between the cutout grooves 49a, 49b of the rotary shaft 14 and the block pieces 40a, 40b.
b, so that the insertion of the implanted portion 20 to the rotating shaft 14 can be performed without damaging the rotating shaft 14 as compared with the related art.
The replacement work can be performed faster and more easily.

FIGS. 11 and 12 are schematic views showing a second embodiment of the axial compressor according to the present invention. The first
The same components as those of the embodiment are denoted by the same reference numerals. FIG. 11 is a schematic sectional view of an axial compressor according to the present invention,
FIG. 12 is a schematic perspective view showing a state before assembling a support plate applied to the implanted portion of the rotor blade of the axial flow compressor according to the present invention.

In the present embodiment, the implanted portion 20 of the moving blade 15 is attached to the rotating shaft 14 by a support plate 53 interposed between the implanted portion 20 of the moving blade 15 and the rotating shaft 14 and extending in the axial direction. It is fixed.

[0105] As in the first embodiment, the implantation section 20 is
The slopes 36a and 36b are provided at the bottoms of both ends. As shown in FIG. 12, the support plate 53 is formed by inverting one band-shaped plate, and the inverted portion 58a is formed on the inclined surface 54a corresponding to the inclined surface 36a of the implanted portion 20, and before the inversion. A slit 55 is provided at the end of the plate and a raised portion 56 is formed at the end of the inverted plate.

Next, the implanted portion 20 of the moving blade 15 is
4 will be described.

In fixing the implanted portion 20 to the rotating shaft 14, first, the support plate 53 inserts the center shaft 59a into the reversing portion 58a, and then, as shown in FIG.
And the raised portion 56 is accommodated in a groove 57 provided in the rotating shaft 14.

Next, the implantation section 20 is inserted into the rotating shaft 14 toward the flow of the driving fluid FL, and the slope 36 a thereof is brought into contact with the slope 54 a of the support plate 53. In this way, the support plate 53 brought into contact with one end of the implanted portion 20 is lifted toward the implanted portion 20 while pulling the end provided with the slit 55, and as shown in FIG.
The slope 54b is formed corresponding to b. Support plate 5 having slope 54b formed corresponding to slope 36b of implanted portion 20
3, after the mandrel 59 is inserted into the end thereof, the inverted portion 58b is formed by inversion as shown by the arrow AR in the drawing, and the end formed with the inverted portion 58b is inserted into the raised portion 56 side. To wear. The number of the slits 55 provided at the end of the support plate 53 is set in consideration of the ease of the assembling work, since the slits 55 are formed to form the reversing part 58b after the implantation part 20 is inserted into the rotating shaft 14. You.

On the other hand, when replacing the moving blade 15, first,
When the end of the inverted portion 58b of the support plate 53 located on the downstream side of the implant 20 along the flow of the driving fluid FL is pulled away from the rotating shaft 14, as shown in FIG. Remove 59b. When the mandrel 59b is removed, a gap is formed between the implanted portion 20 and the rotating shaft 14, and the implanted portion 20 is separated from the rotating shaft 14 in the axial direction by using the gap.

As described above, according to the present embodiment, when inserting / exchanging the implanted portion 20 of the rotor blade 15 with respect to the rotary shaft 14, the implanted portion 20 is inverted between the implanted portion 20 and the rotary shaft 14 at both ends. Since the support plate 53 having the portions 58a and 58b is interposed to prevent the movement of the support plate 53 during operation, the implanted portion 2 is not damaged as compared with the related art.
The insertion / exchange operation with respect to the 0 rotation shaft 14 can be performed more quickly and more easily, and the implantation section 20 can be maintained in a stable state with respect to the rotation shaft 14.

In this embodiment, since the shafts 59a, 59b are inserted into the inverted portions 58a, 58b of the support plate 53, the rigidity of the support plate 53 can be increased, and the implant portion 2
0 can be reliably fixed to the rotating shaft 14.

Also, in this embodiment, the raised portion 56 is provided on the support plate 53 in contact with the rotating shaft 14 and the raised portion 56 is accommodated in the groove 57 of the rotating shaft 14.
Can be prevented from moving in the axial direction.
Can be maintained in a stable assembly state.

FIGS. 13 to 15 are schematic views showing a first modification of the second embodiment of the axial compressor according to the present invention. The same components as those of the first embodiment are denoted by the same reference numerals. 13 is a schematic cross-sectional view of the axial compressor according to the present invention, FIG. 14 is a front view seen from the direction of arrows EE in FIG. 13, and FIG. It is a schematic perspective view which shows the state before assembling of the support plate applied to the implantation part of a wing.

In this embodiment, the rotating blade 15 is interposed between the implanted portion 20 and the rotating shaft 14, and is formed at one end as a double inverted portion of a first inverted portion 60a and a second inverted portion 60b. With
At the other end, a support plate 62 provided with a locking portion 61 formed in a trapezoidal cross section fixes the implanted portion 20 of the moving blade 15 to the rotating shaft 14.

[0115] As in the first embodiment, the implantation section 20 is
The slopes 36a and 36b are provided at the bottoms of both ends. The rotating shaft 14 also has slopes 63a and 63b at both ends.
Of these slopes 63a, 63b, one slope 63a
Is formed upward to the right along the flow of the driving fluid FL, and the other slope 63b is formed downward to the right along the flow of the driving fluid FL.

As shown in FIG. 15, the support plate 62 is formed by reversing one strip-shaped plate, and the inverted portion corresponds to the slope 36b of the implant 20 and the slope 63b of the rotary shaft 14. The locking portion 61 having the trapezoidal cross section having the inclined surfaces 64a and 64b is provided, and the slit 55 is provided at the free end opposite to the inverted portion.

Next, the implanted portion 20 of the moving blade 15 is moved to the rotating shaft 1.
4 will be described.

In fixing the implanted portion 20 to the rotating shaft 14, first, as shown in FIG. 13, the implanted portion 20 is rotated from the direction toward the flow direction of the driving fluid FL.
Insert. Further, a support plate 62 previously formed in the shape shown in FIG.
The implantation section 20 is inserted from the same direction as the insertion direction with respect to the rotating shaft 14.

The support plate 62 inserted in the gap between the implanted portion 20 and the rotary shaft 14 has one end provided with the slit 54 bent outwardly as shown by the arrow AR1 in the first drawing.
An inverted portion 60a is formed, and the first inverted portion 60a is
The second inverting portion 60b is formed by bending the other end provided with the slit 54 outwardly as shown by the arrow AR2 in the drawing, while making long contact along the 0 inclined surface 36a. Long contact is made along the inclined surface 63a of the rotating shaft 14. Note that the first reversing unit 60a and the second
The reversing part 60b may be bent inward as indicated by arrows AR1 and AR2 in FIG.

Further, when forming the first reversing portion 60a and the second reversing portion 60b, the support plate 62 pulls both ends of the slope portion 3 of the implantation portion 20, as shown in FIG.
6a and the rotating shaft 14 are bent along the respective inclined surfaces 63a.

On the other hand, when replacing the rotor blade 15, first,
When the ends of the first reversing portion 60a and the second reversing portion 60b are separated from the rotating shaft 14, they are extended to free ends as shown in FIG. When the both ends of the support plate 62 are free ends, a gap is formed between the implanted portion 20 and the rotating shaft 14, and the support plate 62 is moved from the locking portion 61 side to the rotating shaft 14 by using the gap. Then, the implantation part 20 is separated from the rotating shaft 14 along the axial direction.

As described above, according to the present embodiment, when inserting and replacing the implanted portion 20 of the rotor blade 15 with respect to the rotary shaft 14, the first end is inserted between the implanted portion 20 and the rotary shaft 14. Since the first reversing portion 60a and the second reversing portion 60b are formed, and the support plate 62 having the locking portion 61 having a trapezoidal cross section is interposed at the other end, the rotating shaft 14 is damaged as compared with the related art. Without this, the work of inserting and replacing the implanting part 20 with respect to the rotating shaft 14 can be performed faster and more easily.

In the present embodiment, the end of the first inversion portion 60a of the first inversion portion 60a and the second inversion portion 60b formed at one end of the support plate 62 is connected to the slope 36 of the implantation portion 20.
a, and the end of the second reversing part 60b is
4 and the slope 64a and the slope 6 of the locking portion 61 having a trapezoidal cross section formed at the other end.
4b, the slope 64a is brought into contact with the slope 36b of the implant 20 and the slope 64b is brought into contact with the slope 63b of the rotating shaft 14, so that the implant 20 of the moving blade 15 is securely fixed to the rotating shaft 14. Can be done.

FIGS. 17 and 18 are schematic views showing a second modification of the axial compressor according to the second embodiment of the present invention. The same components as those of the first embodiment are denoted by the same reference numerals. FIG. 17 is a schematic cross-sectional view of the axial compressor according to the present invention, and FIG. 18 is a schematic perspective view showing a state before assembling a support plate applied to the implanted portion of the rotor blade of the axial compressor according to the present invention. FIG.

In this embodiment, the rotor 15 is interposed between the implanted portion 20 and the rotating shaft 14, and one end is formed into a double inverted portion of the first inverted portion 60a and the second inverted portion 60b. With
A support plate 62 having a locking portion 61 formed in a trapezoidal cross section at the other end, and a mandrel 65 inserted in the center of the support plate 62 along the axial direction, form the implanted portion 20 of the rotor blade 15. The rotation axis 1
4 was fixed.

[0126] The implanting section 20 is similar to the first embodiment,
36a and 36b are provided at the bottoms at both ends. Also, the rotating shaft 14 is provided with inclined surfaces 63a and 63b at both ends, similarly to the second modified example in the second embodiment.

As shown in FIG. 18, the support plate 62 is obtained by inverting one strip-shaped plate, and the inverted portion corresponds to the inclined surface 36b of the implant 20 and the inclined surface 63b of the rotating shaft 14. To form a locking portion 61 having a trapezoidal cross section having inclined surfaces 64a and 64b, and the end opposite to the inverted portion is a free end.

Next, the implanted portion 20 of the rotor blade 15 is
4 will be described.

In fixing the implanted portion 20 to the rotating shaft 14, first, as shown in FIG. 17, the implanted portion 20 is inserted into the rotating shaft 14 in a direction toward the flow of the driving fluid FL. Further, after the mandrel 65 is inserted into the center of the support plate 62 preformed into the shape shown in FIG. 18, the support plate 62 together with the mandrel 65 is inserted into the gap between the implantation part 20 and the rotating shaft 14 by the above-described implantation part. 20 is inserted from the same direction as the insertion direction with respect to the rotating shaft 14.

The support plate 62 inserted into the gap between the implanted portion 20 and the rotating shaft 14 is bent at one end outward as shown by an arrow AR1 in the drawing to form a first reversing portion 60a. The first inverted portion 60a is brought into long contact along the slope 36a of the implanted portion 20, and the other end is bent outward while being pulled as shown by the arrow AR2 in the drawing to form the second inverted portion 60b. 2 inversion unit 6
0b along the slope 63a of the rotating shaft 14 for a long time,
Finally, the mandrel 65 is cut.

On the other hand, when replacing the moving blade 15, as in the first modification of the second embodiment, the first reversing portion 60a
When the end of the second reversing portion 60b is separated from the rotation shaft 14, the end is extended to a free end as shown in FIG. When both ends of the support plate 62 are free ends, the implantation portion 2
Since a gap is formed between the rotating shaft 14 and the rotation shaft 14, the support plate 62 is separated from the rotation shaft 14 from the locking portion 61 side by using this gap, and then the implantation portion 20 is moved from the rotation shaft 14 to the shaft. Pull apart along the direction.

As described above, in the present embodiment, the first reversing portion 60a and the second reversing portion 60b are formed at one end and the cross-section is formed at the other end. At the center of a support plate 62 having a trapezoidal locking portion 61
5, the rigidity of the support plate 62 is increased, so that the implant 20 can be securely fixed to the rotating shaft 14.

FIG. 19 shows a second embodiment of the axial compressor according to the present invention.
It is an outline sectional view showing the 3rd modification in an embodiment.
The same components as those of the first embodiment are denoted by the same reference numerals.

In this embodiment, the rotor 15 is interposed between the implanted portion 20 and the rotating shaft 14, and one end is formed into a double inverted portion of the first inverted portion 60a and the second inverted portion 60b. With
A support plate 62 provided with a locking portion 61 having a trapezoidal cross section at the other end, a first inversion portion 60a of the support plate 62 and a second
The implanted portion 20 of the moving blade 15 is fixed to the rotating shaft 14 by a mandrel 66a inserted in the reversing portion 60b and a mandrel 66b inserted in the locking portion 61.

[0135] As in the first embodiment, the implantation section 20 is
The slopes 36a and 36b are provided at the bottoms of both ends. Also, the rotating shaft 14 is provided with inclined surfaces 63a and 63b at both ends, similarly to the second modified example in the second embodiment.

As in the case of the first modified example of the second embodiment, the support plate 62 is formed by inverting a single band-shaped plate, and the inverted portion is formed by the inclined surface 36b of the implant portion 20 and the rotating shaft 14a. Corresponding to the slope 63b of the slope 64a,
A locking portion 61 having a trapezoidal cross section with 64b is provided, and a slit (not shown) is provided at an end opposite to the inverted portion to make it a free end.

Next, the implanted portion 20 of the moving blade 15 is moved to the rotating shaft 1.
4 will be described.

In fixing the implanted portion 20 to the rotating shaft 14, first, the implanted portion 20 is inserted into the rotating shaft 14 in a direction toward the flow of the driving fluid FL. Further, after inserting the mandrel 66b in the transverse direction of the locking portion 61 of the support plate 62 formed as described above in advance, the support plate 6 is inserted together with the mandrel 66b.
2 is inserted into the gap between the implantation portion 20 and the rotating shaft 14 from the same direction as the above-described insertion direction of the implantation portion 20 with respect to the rotating shaft 14.

The support plate 62 inserted in the gap between the implanted portion 20 and the rotary shaft 14 has a center axis 66a inserted in the transverse direction, and then pulls one end inward as shown by the arrow AR1 in the drawing. It is bent to form a first reversal part 60a,
The inverted portion 60a is brought into long contact along the slope 36a of the implanted portion 20, and the other end is bent inward while being pulled as shown by the arrow AR2 in the drawing to form the second inverted portion 60b, and the second inverted portion 60b is formed. The portion 60b is brought into long contact along the inclined surface 63a of the rotating shaft 14.

On the other hand, when the blade 15 is replaced, as in the first modification of the second embodiment, the first reversing portion 60a
When the end of the second reversing part 60b is separated from the rotating shaft 14, the end is extended to a free end. When the both ends of the support plate 62 are free ends, a gap is formed between the implanted portion 20 and the rotating shaft 14, and the support plate 62 is moved from the locking portion 61 side to the rotating shaft 14 by using the gap. Then, the implantation part 20 is separated from the rotating shaft 14 along the axial direction.

As described above, in the present embodiment, the mandrel 66a is inserted between the implanted portion 20 and the rotating shaft 14, and the mandrel 66a is inserted into the first inverted portion 60a and the second inverted portion 60b formed at one end. At the same time, the center shaft 66b is inserted into the locking portion 61 having a trapezoidal cross section formed at the other end, and the rigidity of the support plate 62 is increased, so that the implantation portion 20 is securely fixed to the rotating shaft 14. Can be.

FIGS. 20 and 21 are schematic views showing a fourth modification of the second embodiment of the axial compressor according to the present invention. The same components as those of the first embodiment are denoted by the same reference numerals. 20A is a view for explaining the initial stage of the assembly work of the axial compressor according to the present invention,
(B) is a diagram for explaining the completion of the assembling work, and FIG. 21 is a front view as seen from the direction of arrows FF in (b) of FIG.

In the present embodiment, a reinforcing piece 67 is inserted between one end of the blade 15 and the rotating shaft 14 and one end thereof is inserted.
The implanted portion 20 of the moving blade 15 is fixed to the rotating shaft 14 by a support plate 62 provided with a locking portion 61 having a trapezoidal cross section at the other end.

[0144] The implantation section 20 has a slope 36b provided on the rear side of the driving fluid FL. The rotating shaft 14 also has a slope 63b on the downstream side of the driving fluid FL.

The support plate 62 is formed by inverting a single band-shaped plate, and has inclined surfaces 64a and 64b corresponding to the inclined surface 36b of the implanted portion 20 and the inclined surface 63b of the rotating shaft 14 described above. The locking portion 61 has a trapezoidal cross section, and the opposite end of the inverted portion is a free end.

Next, the implantation portion 20 of the moving blade 15 is moved to the rotating shaft 1.
4 will be described.

In fixing the implant 20 to the rotating shaft 14, first, as shown in FIG. 20A, the implant 20 is inserted into the rotating shaft 14 in a direction facing the flow of the driving fluid FL. . In addition, the support plate 62 also
And the rotating shaft 14 is inserted into the gap between the implanting portion 20 and the rotating shaft 14 from the same direction as the inserting direction.
a is brought into contact with the slope 36b of the implanted portion 20,
The slope 64 b is brought into contact with the slope 63 b of the rotating shaft 14.

The support plate 62 inserted in the gap between the implanted portion 20 and the rotating shaft 14 has a portion that contacts the rotating shaft 14 longer than a portion that contacts the implanted portion 20, and has an inverted L-shaped cross section. As shown by the arrow AR1 in the drawing,
After being inserted, as shown in FIG.
A bent portion 68 is formed by bending in the direction 2, and the reinforcing plate 67 is fixedly supported by the bent portion 68.

As shown in FIG. 21, the support plate 62 to which the reinforcing piece 67 is fixed fixedly supports the end of the tab tail-shaped implanted portion 20 and fixes the implanted portion 20 to the rotating shaft 14.

On the other hand, when replacing the rotor blade 15, the bent portion of the support plate 62 is cut back by returning it to the state before assembly shown in FIG. 20A, and the reinforcing piece 67 is pulled away from the rotary shaft. After that, the support plate 62 is separated from the rotating shaft 14 on the locking portion 61 side, and finally, the implanted portion 20 is separated from the rotating shaft 14 along the axial direction.

As described above, according to the present embodiment, when inserting / exchanging the implanted portion 20 with respect to the rotating shaft 14, the reinforcing piece inserted at one end is inserted between the implanted portion 20 and the rotating shaft 14. A supporting plate 6 having a bent portion 68 for fixing and supporting the 67 and a locking portion 61 having a trapezoidal cross section at the other end.
The insertion of the implant 2 into and out of the rotating shaft 14 can be performed faster and more easily without damaging the rotating shaft 14 as compared with the related art.

FIGS. 22 and 23 are schematic sectional views showing a fifth modification of the second embodiment of the axial flow compressor according to the present invention. The same components as those of the first embodiment are denoted by the same reference numerals. FIG. 22 is a schematic cross-sectional view of an axial compressor according to the present invention, and FIG. 23 is a schematic diagram showing a state before assembling a support plate applied to a stuck portion of a rotor blade of the axial compressor according to the present invention. It is a perspective view.

In the present embodiment, the rotating blade 15 is interposed between the implanted portion 20 and the rotating shaft 14, and the bent portions 69a, 69 are provided at one end.
b into strips 70a, 70b with
At the other end, a support plate 62 provided with a locking portion 61 formed in a trapezoidal cross section fixes the implanted portion 20 of the moving blade 15 to the rotating shaft 14.

The implantation section 20 has a slope 36b on the downstream side of the driving fluid FL. The rotating shaft 14 also has a slope 63b on the downstream side of the driving fluid FL.

Further, as shown in FIG. 23, the support plate 62 is made of an elastic material such as steel, and one strip-shaped plate is inverted.
6b and a slope 63b corresponding to the slope 63b of the rotating shaft 14.
4a, 64b, and at least one strip 70a, 70b having a relatively small width on the opposite side of the inverted portion. Bends 69a and 69b are provided at the ends.

Next, the implanted portion 20 of the moving blade 15 is moved to the rotating shaft 1.
4 will be described.

In fixing the implanted portion 20 to the rotating shaft 14, the implanted portion 20 first contacts the bent portion 69a of the support plate 62 shown in FIG. The strips 70a and 70b of the support plate 62 are elastically deformed in a state where the strips 70a and 70b are in contact with the inclined surface 36b of the implant portion 20, and are inserted into the rotary shaft 14 in the direction of the arrow AR shown in the drawing. At this time, the bent portion 69b of the strip 70b spreads due to the elastic force of the support plate 62 and is hooked on the end of the rotating shaft 14. In this way, the implant 20 is fixed to the rotating shaft 14.

On the other hand, when replacing the rotor blade 15, the bent portion 69b of the strip 70b hooked on the end of the rotating shaft 14 is required.
Is pushed up to the implantation part 20 side, and the implantation part 20
Then, the support plate 62 is moved along the flow of the driving fluid FL, and is separated from the rotating shaft 14.

As described above, according to the present embodiment, when inserting and replacing the implanted portion 20 with the rotating shaft 14, the implanted portion 2
0 and the rotating shaft 14, bent portions 69 a and 69 are provided at one end.
b into strips 70a, 70b with
At the other end, a support plate 62 having a trapezoidal locking portion 61 is interposed, and the elastic portion of the support plate 62 is used.
Can be freely attached to and detached from the rotating shaft 14, so that the insertion and replacement of the implanted portion 20 with respect to the rotating shaft 14 can be performed faster and more without damaging the rotating shaft 14 as compared with the related art. It can be done easily.

FIGS. 24 and 25 are schematic sectional views showing a sixth modification of the axial compressor according to the second embodiment of the present invention. The same components as those of the first embodiment are denoted by the same reference numerals. FIG. 24 is a schematic cross-sectional view of the axial compressor according to the present invention, and FIG. 25 is a schematic perspective view showing a support plate applied to the implanted portion of the rotor blade of the axial compressor according to the present invention. (a) is a view showing a state after assembling the support plate, (b)
FIG. 4 is a view showing a state before assembling a support plate.

In this embodiment, the rotating blade 14 is interposed between the implanted portion 20 of the rotor blade 15 and the rotating shaft 14, and support pieces 71a and 71b are provided at both ends.
The implanted portion 20 of the moving blade 15 is fixed to the rotating shaft 14 by a support plate 62 provided with.

[0162] The implanting section 20 is similar to the first embodiment,
The slopes 36a and 36b are provided at the bottoms of both ends. Also, the rotating shaft 14 is provided with inclined surfaces 63a and 63b at both ends, similarly to the second modified example in the second embodiment.

As shown in FIG. 25 (b), the support plate 62 is formed by cutting trapezoidal support pieces 71a and 71b at both ends of a relatively narrow flat portion 72 in advance. At this time, as shown in FIG. 25A, both ends of the flat portion 72 are bent so as to correspond to the slopes 63a and 63b of the rotating shaft 14, and at the same time, the support pieces 71 are formed.
a and 71b are also configured such that the angles of the bent cut sides 74a and 74b coincide with the angles of the slopes 36a and 36b of the implanted portion 20. The support plate 62 has a relatively large width of the flat portion 72 as shown in FIG. 26B, and both ends of the flat portion 72 during assembling as shown in FIG. The support pieces 71a and 71b may be bent as described above.

Next, the implanted portion 20 of the moving blade 15 is moved to the rotating shaft 1.
4 will be described.

When fixing the implanted portion 20 to the rotating shaft 14, first, as shown in FIG. 24, the implanted portion 20 is inserted into the rotating shaft 14 in a direction toward the flow of the driving fluid FL. Further, the support plate 62 also bends one end of the flat portion 72 shown in FIG. 25B or FIG. 26B, and rotates the above-described implant portion 20 in the gap between the implant portion 20 and the rotating shaft 14. It is inserted from the same direction as the insertion direction with respect to the shaft 14, the inclined surface 73a is brought into contact with the inclined surface 63a of the rotating shaft 14, the support piece 71a is bent, and the cut side 74a is brought into contact with the inclined surface 36a of the implantation part 20. Further, the support plate 6
2 is to bend the other side of the flat portion 72,
3b is brought into contact with the inclined surface 63b of the rotating shaft 14, and the supporting piece 71
b is bent so that the cut side 74b is brought into contact with the slope 36b of the implanted portion 20. In this way, the implant 20
Is fixed to the rotating shaft 14.

On the other hand, when the blade 15 is replaced, the bent portion of the support plate 62 is replaced with the one shown in FIG.
(B), the support plate 62 is separated from the rotating shaft 14 and finally the implanted portion 20 is bent.
Is separated from the rotating shaft 14 along the axial direction.

As described above, in this embodiment, when inserting and replacing the implanted portion 20 with respect to the rotating shaft 14, the support pieces are formed at both ends between the implanted portion 20 and the rotating shaft 14. Since the support plate 62 is interposed, the rotation shaft 14 of the implanted portion 20 is not damaged as compared with the related art.
Can be carried out more quickly and more easily.

FIG. 27 shows a second embodiment of the axial compressor according to the present invention.
It is an outline sectional view showing the 7th modification of an embodiment.
The same components as those of the first embodiment are denoted by the same reference numerals. 27A is a diagram illustrating an initial stage of an assembly operation of the axial compressor according to the present invention, and FIG. 27B is a diagram illustrating a time when the assembly operation is completed.

In this embodiment, the rotating blade 14 is interposed between the implanted portion 20 of the rotor blade 15 and the rotating shaft 14, and support pieces 71a, 71b are provided at both ends.
Is the same as the sixth modified example of the second embodiment in that the implanted portion 20 of the rotor blade 15 is fixed to the rotating shaft 14 with the support plate 62 provided with Are different. The support plate 62 is selected to have the shape shown in FIG. 25 or FIG.

On the other hand, as in the first embodiment, the implanted portion 20 has slopes 36a and 36b at the bottoms at both ends. The rotating shaft 14 has cutout grooves 75a and 75b at both ends.

Next, the implantation portion 20 of the moving blade 15 is
4 will be described.

In fixing the implanted portion 20 to the rotating shaft 14, first, as shown in FIG. 25 (a) or FIG. 26 (b), both ends of the flat portion 72 and the support pieces 71a, After bending 71b, FIG.
As shown in FIG. Further, the support plate 62 supports the support pieces 71a and 71b with the cutout grooves 7 of the rotary shaft 14.
The arches 5a and 75b are elastically deformed in the direction indicated by the arrow AR1 to maintain the arch shape. Next, the implantation section 20 is inserted into the rotating shaft 14 in a direction facing the flow of the driving fluid FL. At this time, when the elastic force of the support pieces 71a and 71b, which have been elastically deformed in an arch shape, is released, the support plate 62 becomes as shown in FIG.
As shown in (b), the support pieces 71a, 71b are restored in the direction of the arrow AR2, and the cut sides 74a, 74b of the support pieces 71a, 71b are inserted into the implantation portion 2.
0 and the bottom sides of the supporting pieces 71a and 71b are notched with the notches 75a and 7b of the rotary shaft 14.
5b. In this way, the implantation section 20 is fixed to the rotating shaft 14.

On the other hand, when replacing the rotor blade 15, the support pieces 71a and 71b are elastically deformed in the direction of the arrow AR1 shown in FIG. And pull it apart.

Therefore, in this embodiment, the support plate 62 has the same configuration as that of the sixth modification of the second embodiment, and the support plate is made of an elastic body, and the elastic force is skillfully used.
Insertion / exchange work of the implantation part 20 with respect to the rotating shaft 14 can be performed quickly and easily.

FIG. 28 shows a second embodiment of the axial flow compressor according to the present invention.
It is a schematic perspective view which shows the 8th modification in embodiment.
The same components as those of the first embodiment are denoted by the same reference numerals.

In this embodiment, the sixth modification of the second embodiment shown in FIG. 24 is combined with the seventh modification of the second embodiment shown in FIG. Notch groove 77a having slopes 76a, 76b,
77b is formed.

That is, the support plate 62 is made of an elastic material, and provided with support pieces 71a and 71b at both ends.
The cut sides 74a and 74b of the a and 71b are brought into contact with the slopes 76a and 76b of the cutout grooves 77a and 77b of the implanted portion 20.

As described above, in this embodiment, the support pieces 71a,
Since the cut sides 74a and 74b of the implant 71 are brought into contact with the slopes 76a and 76b of the cutout grooves 77a and 77b of the implant 20, the insertion and replacement of the implant 20 with respect to the rotary shaft 14 can be performed quickly and easily. it can.

FIGS. 29 to 31 are schematic sectional views showing a third embodiment of the axial compressor according to the present invention. The first
The same components as those of the embodiment are denoted by the same reference numerals. FIG. 29 is a schematic sectional view of an axial compressor according to the present invention,
FIG. 30 is a front view seen from the direction of arrows GG in FIG. 29, and FIG. 31 is a perspective view showing a rotation preventing portion of the fixed shaft applied to the implanted portion of the rotor blade of the axial compressor according to the present invention. is there. 31A is a diagram illustrating a state before the rotation preventing portion is formed, and FIG. 31B is a diagram illustrating a state after the rotation preventing portion is formed.

In this embodiment, the fixed shaft 78 extending in the axial direction and the rotation preventing portion 79 are interposed between the implanted portion 20 of the moving blade 15 and the rotating shaft 14, and the implanted portion of the moving blade 15 is provided. 20
Are fixed to the rotating shaft 14.

The implanted portion 20 of the moving blade 15 is fixed to the rotating shaft 14 by the implanted portion 20 and the fixed shaft 78 and the rotation preventing portion 79.

The implantation portion 20 and the rotating shaft 14 are provided with notched grooves 80a and 80b so as to face each other along the axial direction.

Further, as shown in FIG. 29, the fixed shaft 78 is formed in an elliptical shape, and one end thereof is provided with a connecting portion 81 for engaging a driving portion (not shown), for example, a hexagonal hole. At the end, as shown in FIG. 31, a rotation preventing portion 79 formed continuously and integrally is provided. Note that the oval shape of the fixed shaft 78 may be elliptical or oval.

Next, the implanted portion 20 of the moving blade 15 is moved to the rotating shaft 1.
4 will be described.

In fixing the implanted portion 20 to the rotating shaft 14, first, the fixed shaft 78 has a cutout groove 80 of the rotating shaft 14 with its short diameter portion aligned with the radial direction of the rotating shaft 14.
b. Next, the implant 20 is inserted into the rotating shaft 14 toward the flow of the driving fluid FL. Implanting part 20
After being inserted into the rotating shaft 14, the driving unit is, as shown in FIG.
The fixed shaft 78 is connected to the connection portion 81 of the fixed shaft 78, and the fixed shaft 78 is turned until the long diameter portion of the fixed shaft 78 comes into contact with the cutout groove 80a of the implantation portion 20 and the cutout groove 80b of the rotating shaft 14. Fixed shaft 7
When the major diameter portion of each of the eight contacts the notch groove 80a, 80b,
As shown in FIG. 31A, the rotation preventing portion 79
2 are divided pieces 84a, 84 in which cut portions 83 are provided in advance.
b in the direction of the arrow AR, and the divided pieces 84a, 84b
31 is expanded as shown in FIG.
Prevent rotation of In this way, the implant 20 is fixed to the rotating shaft 14.

On the other hand, when replacing the rotor blade 15, the divided pieces 84a and 84b of the rotation preventing portion 79 are formed in the same state as before assembly, and the fixed shaft 78 is turned so that the shorter diameter portion is rotated.
And implanting part 20 is separated from rotating shaft 14 along the axial direction.

As described above, in the present embodiment, the implantation section 20
When inserting and replacing the rotating shaft 14, the fixed shaft 78 and the rotation preventing portion 79 are interposed between the implanted portion 20 and the rotating shaft 14, and the rotation of the fixed shaft 78 during operation is controlled. As a result, the insertion and replacement of the implanted portion 20 with respect to the rotating shaft 14 can be performed faster and more easily without damaging the rotating shaft 14 as compared with the related art.
The implant 20 can be maintained in a stable state with respect to the rotating shaft 14.

FIG. 32 shows a third embodiment of the axial compressor according to the present invention.
FIG. 9 is a schematic cross-sectional view illustrating a first modification of the embodiment.
The same parts as those of the first embodiment are denoted by the same reference numerals.

In this embodiment, the implanted portion 20 of the moving blade 15 is interposed between the implanted portion 20 of the moving blade 15 and the rotary shaft 14 and is relatively soft and fixed along the axial direction.
Are fixed to the rotating shaft 14.

The implantation portion 20 has a notch groove 8 extending in the axial direction.
6 and a concave portion 87 is provided at the center of the cutout groove 86 in the axial direction so as to correspond to the shape of the fixed shaft 85. Further, the rotary shaft 14 has a cutout groove 88 extending in the axial direction.

The fixed shaft 85 is made of a material that is softer than the material of the implanted portion 20 and the rotating shaft 14, for example, 12 chrome alloy steel, and has a triangular cross section. ), For example, a hexagonal hole is provided. The cross section of the fixed shaft 85 is not limited to a triangle, but may be a shape that can reliably contact the concave portion 87 of the implanted portion 20 or the cutout groove 88 of the rotating shaft 14, for example, an ellipse, an oval, or the like.
It may be a square, a pentagon, or the like.

Next, the implanted portion 20 of the moving blade 15 is connected to the rotating shaft 1.
4 will be described.

In fixing the implanted portion 20 to the rotating shaft 14, first, the fixed shaft 85 is installed in the cutout groove 88 of the rotating shaft 14. Further, the implantation part 20 includes the driving fluid F
It is inserted into the rotating shaft 14 toward the flow of L. Implant 20
After being attached to the rotating shaft 14, the driving unit is connected to the connecting portion 81 of the fixed shaft 85, and fixed until each side of the fixed shaft 85 contacts the concave portion 87 of the implanted portion 20 and the cutout groove 88 of the rotating shaft 14. Turn the shaft 85. During the rotation of the fixed shaft 85, each side of the fixed shaft 85 is plastically deformed, and the fixed shaft 85 comes into contact with the concave portion 87 of the implanted portion 20 and the cutout groove 88 of the rotating shaft 14 due to the plastic deformation, and rotates the implanted portion 20. It is fixed to the shaft 14.

On the other hand, when the blade 15 is replaced, the fixed shaft 85 is rotated by the driving unit to maintain the fixed shaft 85 in the same state as before the assembly, and then the implantation unit 20 is moved along the axial direction from the rotary shaft 14. And pull it apart.

As described above, in the present embodiment, when inserting and replacing the implanted portion 20 with respect to the rotating shaft 14, the implanted portion 20 and the rotating shaft 14 are disposed between the implanted portion 20 and the rotating shaft 14. Since the fixed shaft 85 made of a material softer than the material is interposed to prevent rotation of the fixed shaft 85 during operation, the implanted portion 2 is not damaged as compared with the related art without damaging the rotating shaft 14.
The insertion / exchange operation with respect to the 0 rotation shaft 14 can be performed more quickly and more easily, and the implantation section 20 can be maintained in a stable state with respect to the rotation shaft 14.

FIGS. 33 and 34 are schematic sectional views showing a second modification of the third embodiment of the axial compressor according to the present invention. The same components as those of the first embodiment are denoted by the same reference numerals. FIG. 33 is a schematic sectional view of the axial flow compressor according to the present invention, and FIG. 34 is a schematic view showing a state before assembling of a fixed shaft applied to the implanted portion of the moving blade of the axial flow compressor according to the present invention. It is a perspective view.

In this embodiment, a relatively soft soft projection 90 is provided between the implanted portion 20 of the moving blade 15 and the rotating shaft 14 and provided on a fixed shaft 89 extending in the axial direction. 1
5 in which the implanted portion 20 is fixed to the rotating shaft 14.

Both the implanted portion 20 and the rotating shaft 14 are provided with notched grooves 91a and 91b extending in the axial direction, and provided with concave portions 92a and 92b in the circumferential direction corresponding to the projections 90 of the fixed shaft 89.

The fixed shaft 85 is provided at one end thereof with a connecting portion 93 for engaging a driving portion (not shown), for example, a hexagonal hole, and in the circumferential direction, the material of the implanted portion 20 and the rotating shaft 14 such as 12 A projection 90 made of a material softer than chromium alloy steel is provided.

Next, the implanted portion 20 of the moving blade 15 is
4 will be described.

In fixing the implanted portion 20 to the rotating shaft 14, first, the fixed shaft 89 is installed in the cutout groove 91 b of the rotating shaft 14. Furthermore, the implantation part 20 is inserted into the rotating shaft 14 toward the flow of the driving fluid FL. Implant 2
0 is inserted into the rotating shaft 14, the driving unit is connected to the connecting portion 93 of the fixed shaft 89, and the protrusion 90 of the fixed shaft 89 is
The fixed shaft 89 is turned until it contacts the concave portion 92a of the rotary shaft 14 and the concave portion 92b of the rotary shaft 14. While turning the fixed shaft 89, the projection 9
0 is plastically deformed, and the protrusion 90 of the fixed shaft 89 is plastically deformed.
Makes contact with the concave portion 92a of the implanted portion 20 and the concave portion 92b of the rotating shaft 14 to fix the implanted portion 20 to the rotating shaft 14.

On the other hand, when the blade 15 is replaced, the fixed shaft 89 is rotated by the driving unit, the fixed shaft 89 is maintained in the same state as before the assembly, and then the implantation unit 20 is moved along the axial direction from the rotary shaft 14. And pull it apart.

As described above, in the present embodiment, when inserting and replacing the implanted portion 20 with respect to the rotating shaft 14, the implanted portion 20 and the rotating shaft 14 are disposed between the implanted portion 20 and the rotating shaft 14. A fixed shaft 89 having a protrusion 90 made of a material softer than the material is interposed to prevent the rotation of the fixed shaft 89 during operation. Can be performed more quickly and more easily with respect to the rotating shaft 14, and the implantation part 20 can be maintained in a stable state with respect to the rotating shaft 14.

[0204]

As described above, according to the axial flow compressor of the present invention, the implanted portion of the moving blade is inserted into the rotating shaft.
When performing the replacement work, a block piece with a slope is interposed between the implanted part and the rotating shaft, and the block piece is rotated in the forward and reverse directions, and the block piece is detachably attached to the implanted part and the rotating shaft. Because of the movable structure, the insertion / exchange operation of the implanted portion with respect to the rotating shaft can be performed faster and more easily than in the past.

Further, in the axial flow compressor according to the present invention, since the support plate having the reversing portion or the locking portion at both ends is interposed between the implant portion and the rotary shaft, the implant portion is connected to the rotary shaft. Can be maintained in a stable state without being moved.

In the axial compressor according to the present invention, since the fixed shaft and the rotation preventing portion are interposed between the implanted portion and the rotating shaft, the implanted portion can be securely fixed to the rotating shaft. Can be.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a first embodiment of an axial compressor according to the present invention.

2A and 2B are diagrams illustrating an assembly procedure of the axial compressor according to the present invention, wherein FIG. 2A illustrates an initial stage of an assembly operation of the axial compressor according to the present invention, and FIG. The figure explaining the time of completion.

FIG. 3 is a front view as seen from the direction of arrows BB in FIG. 1;

FIG. 4 is a schematic sectional view showing a first modification of the axial compressor according to the first embodiment of the present invention.

FIG. 5 is a schematic cross-sectional view showing a second modification of the first embodiment of the axial flow compressor according to the present invention, and FIG. 5 (a) is a diagram illustrating an initial stage of an assembly operation of the axial flow compressor according to the present invention. (B) is a diagram for explaining the completion of the assembly work.

FIG. 6 is a schematic cross-sectional view showing a third modification of the axial compressor according to the first embodiment of the present invention, and FIG. 6 (a) is a diagram illustrating an initial stage of an assembly operation of the axial compressor according to the present invention. (B) is a diagram for explaining the completion of the assembly work.

FIG. 7 is a front view as seen from the direction of arrows CC in FIG. 6;

FIG. 8 is a schematic cross-sectional view showing a fourth modification of the axial compressor according to the first embodiment of the present invention, and FIG. 8 (a) is a diagram illustrating an initial stage of an assembly operation of the axial compressor according to the present invention. (B) is a diagram for explaining the completion of the assembly work.

FIG. 9 is a schematic sectional view showing a fifth modification of the axial compressor according to the first embodiment of the present invention.

FIG. 10 is a front view as seen from the direction of arrows DD in FIG. 9;

FIG. 11 is a schematic sectional view showing a second embodiment of the axial compressor according to the present invention.

FIG. 12 is a schematic perspective view showing a state before assembling a support plate applied to a stuck portion of a rotor blade of the axial flow compressor according to the present invention.

FIG. 13 is a schematic sectional view showing a first modification of the axial compressor according to the second embodiment of the present invention.

FIG. 14 is a front view as seen from the direction of arrows EE in FIG. 13;

FIG. 15 is a schematic perspective view showing a state before assembling a support plate applied to the implanted portion of the rotor blade of the axial flow compressor according to the present invention.

FIG. 16 is a view for explaining a modification of the reversing direction of the reversing unit shown in FIG. 13;

FIG. 17 is a schematic sectional view showing a second modification of the axial compressor according to the second embodiment of the present invention.

FIG. 18 is a schematic perspective view showing a state before assembling a support plate applied to the implanted portion of the rotor blade of the axial flow compressor according to the present invention.

FIG. 19 is a schematic sectional view showing a third modification of the axial compressor according to the second embodiment of the present invention.

FIG. 20 is a schematic cross-sectional view showing a fourth modification of the axial compressor according to the second embodiment of the present invention, and FIG. 20 (a) is a diagram illustrating an initial stage of an assembly operation of the axial compressor according to the present invention. , (B)
FIG. 7 is a diagram for explaining the completion of the assembly work.

FIG. 21 is a front view as seen from the direction of arrows FF in FIG. 20;

FIG. 22 is a schematic sectional view showing a fifth modification of the axial compressor according to the second embodiment of the present invention.

FIG. 23 is a schematic perspective view showing a state before assembling a support plate applied to the implanted portion of the rotor blade of the axial flow compressor according to the present invention.

FIG. 24 is a schematic sectional view showing a fifth modified example of the axial compressor according to the second embodiment of the present invention.

FIG. 25 is a schematic perspective view showing a support plate applied to the implanted portion of the rotor blade of the axial flow compressor according to the present invention, wherein (a) illustrates a state after assembling the support plate, and (b) illustrates a state after the support plate is assembled. The figure explaining the state before the assembly of a support plate.

26A and 26B are perspective views showing a modification of the support plate shown in FIG. 25, wherein FIG.
(B) is a figure explaining the state before the assembly of a support plate.

FIG. 27 is a schematic cross-sectional view showing a seventh modified example of the second embodiment of the axial flow compressor according to the present invention, and FIG. 27 (a) is a diagram illustrating an initial stage of an assembly operation of the axial flow compressor according to the present invention. , (B)
FIG. 7 is a diagram for explaining the completion of the assembly work.

FIG. 28 is a schematic cross-sectional view showing an eighth modification of the axial compressor according to the second embodiment of the present invention.

FIG. 29 is a schematic sectional view showing a third embodiment of the axial compressor according to the present invention.

30 is a front view as seen from the direction of arrows GG in FIG. 29;

FIG. 31 is a schematic perspective view showing an anti-rotation part of a fixed shaft applied to a stuck part of a rotor blade of the axial flow compressor according to the present invention;
(A) is a figure which shows the state before shaping | molding of a rotation prevention part, (b) is a figure which shows the state after shaping | molding of a rotation prevention part.

FIG. 32 is a schematic cross-sectional view showing a first modification of the third embodiment of the axial compressor according to the present invention.

FIG. 33 is a schematic sectional view showing a second modification of the axial compressor according to the third embodiment of the present invention.

FIG. 34 is a schematic perspective view showing a state before assembling a fixed shaft applied to the implanted portion of the rotor blade of the axial flow compressor according to the present invention.

FIG. 35 is a schematic sectional view showing a conventional axial compressor.

FIG. 36 is a front view as seen from the direction of arrows AA in FIG. 35;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Casing 2 Rotating shaft 3 Moving blade 4 Stationary blade 5 Compressor paragraph 6 Implanted part 7 Backing plate 8 Caulking part 9 Seal fin 10 Diaphragm inner ring 11 Implanted groove 12 Slope 13 Casing 14 Rotating shaft 15 Moving blade 16 Static blade 17 Reference Signs List 18 seal fin 19 diaphragm inner ring 20 implanted portion 21a, 21b cutout groove 22a, 22b screw shaft 23a, 23b block piece 24a, 24b, 25a, 25b slope 26a, 26b screw hole 27 positioning piece 28 groove 29 end face 30 protruding piece 31a, 31b , 33a, 33b Slope 32a Implantation groove 34a, 34b Caulking part 35a, 35b Fastening member 36a, 36b, 37a, 37b Slope 38a, 38b Projecting piece 39a, 39b Notch groove 40a, 40b Block piece 41a, 41b Screw part 42 Fastening member 4 a, 43 b threaded holes 44a, 44b caulking portions 45a, 45b recessed groove 46 groove 45a, 45b, 47a, 47b, 48a, 48b, 4
9a, 49b, 51a, 51b Notch groove 50a, 50b Support piece 52a, 52b Screw hole 53 Support plate 54a, 54b Slope 55 Slit 56 Ridge 57 Groove 58a, 58b Reversing part 59a, 59b Mandrel 60a First reversing part 60b 2 reversing part 61 locking part 62 support plate 63a, 63b, 64a, 64b slope 65, 66a, 66b mandrel 67 reinforcing piece 68, 69a, 69b bending part 70a, 70b strip piece 71a, 71b support piece 72 flat part 73a , 73b, 76a, 76b Slope 74a, 74b Cutting side 75a, 75b, 77a, 77b Notch groove 78 Fixed shaft 79 Rotation prevention part 80a, 80b Notch groove 81 Connection part 82 Shaft 83 Notch 84a, 84b Split piece 85, 89 Fixing Shafts 86, 88, 91a, 91b Notched grooves 87, 92a, 92b Recess 0 projections 93 connecting section

Claims (34)

[Claims] An axial flow compressor in which a compressor stage is formed by combining a moving blade implanted on a rotating shaft and a stationary blade fixed to a casing, and wherein the compressor stages are arranged in multiple stages in the axial direction. An axial compressor comprising a block piece having a slope formed between an implanted portion of a rotor blade and the rotating shaft. 2. The axial flow compressor according to claim 1, wherein the implanting portion has a cutout groove having a slope corresponding to the slope of the block piece provided on at least one of the bottom portions at both ends. 3. The axial flow compressor according to claim 1, wherein the rotating shaft has a protruding piece provided on at least one of both ends. 4. The axial compressor according to claim 1, wherein the block piece is screwed with a screw shaft provided with a positioning piece. 5. The axial flow compressor according to claim 4, wherein the block piece is provided with a caulking portion for preventing rotation of the screw shaft. 6. An axial flow compressor in which a compressor stage is formed by combining a moving blade implanted on a rotating shaft and a stationary blade fixed to a casing, and wherein the compressor stages are arranged in multiple stages in the axial direction. A shaft, comprising a block piece integrally forming a projecting piece having a slope and a fastening member for fixing the block piece to the rotary shaft, between the implanted portion of the bucket and the rotary shaft. Flow compressor. 7. The axial flow compressor according to claim 6, wherein the implanting section has a slope on at least one of the bottoms at both ends, the slope corresponding to the slope of a block piece integrally formed with the protruding piece. 8. The axial-flow compressor according to claim 6, wherein the rotary shaft has a cutout groove in at least one of both ends. 9. An axial compressor in which a compressor stage is constituted by combining a moving blade implanted on a rotating shaft and a stationary blade fixed to a casing, and wherein the compressor stages are arranged in multiple stages in the axial direction. A slope provided at the bottom of both ends of the implanted portion of the bucket, a fastening member inserted between the implanted portion and the rotating shaft and extending along the axial direction, and screwed to both ends of the fastening member; An axial compressor comprising: a block piece provided with a slope corresponding to a slope provided in an implantation portion; and a caulking portion provided on the block piece to prevent rotation of the fastening member. 10. The axial compressor according to claim 1, wherein the rotary shaft has a notch groove for inserting the block piece and a groove for accommodating the fastening member and extending in the axial direction. 11. The axial compressor according to claim 10, wherein the notch groove provided in the rotating shaft has a stepped shape. 12. An axial flow compressor in which a compressor stage is formed by combining a moving blade implanted on a rotating shaft and a stationary blade fixed to a casing, and wherein the compressor stage is arranged in an axial direction. A notch groove provided in the implanted portion, a notched groove provided in the rotating shaft, a block piece housed between the notched groove provided in the implanted portion and the notched groove provided in the rotating shaft, and a block piece. An axial compressor comprising a supporting piece for supporting and a caulking portion formed on a block piece. 13. The axial flow compressor according to claim 12, wherein the block piece has a notch groove corresponding to the notch groove of the implant portion. 14. The axial compressor according to claim 12, wherein the support piece has one of an L-shape and an inverted L-shape. 15. An axial flow compressor in which a compressor stage is configured by combining a moving blade implanted on a rotating shaft and a stationary blade fixed to a casing, and wherein the compressor stages are arranged in multiple stages in the axial direction.
An axial compressor comprising a support plate provided with reversing portions at both ends between an implanted portion of the rotor blade and the rotating shaft. 16. The axial-flow compressor according to claim 15, wherein the reversing portion has a core shaft inserted therein and a slope which is in contact with a slope provided at both bottoms of the implanting portion. 17. The axial compressor according to claim 15, wherein the support plate has a raised portion to be accommodated in a groove provided in the rotating shaft. 18. The support plate is characterized in that the strip-shaped plate is turned upside down to provide a turnover corresponding to the slope of the implanted portion, a slit is provided at the end, and the turnover is formed through the slit. The axial compressor according to claim 15, wherein 19. The axial-flow compressor according to claim 15, wherein the support plate is formed by inverting a strip-shaped plate and has a double reversal portion at one end and a locking portion at the other end. . 20. The axial-flow compressor according to claim 19, wherein one of the double reversing sections is reversed to the implantation section side and the other is reversed to the rotating shaft side. 21. The axial compressor according to claim 19, wherein both of the double reversing parts are reversed inside between the implant part and the rotating shaft. 22. The axial compressor according to claim 19, wherein the locking portion is formed in a trapezoidal shape. 23. A support plate, which is obtained by inverting a strip-shaped plate and providing a double reversing portion at one end and a locking portion at the other end, and extending along the axial direction between the double reversing portions. The axial compressor according to claim 15, wherein a mandrel is inserted. 24. The axial-flow compressor according to claim 19, wherein the double reversing portion and the locking portion have a shaft inserted in a transverse direction. 25. The axial-flow compressor according to claim 15, wherein the support plate is formed by inverting a strip-shaped plate, and a reinforcing piece is inserted into the inverted end. 26. An axial flow compressor in which a compressor stage is constituted by combining a moving blade implanted on a rotating shaft and a stationary blade fixed to a casing, and wherein the compressor stages are arranged in multiple stages in the axial direction.
A support plate was installed between the implanted portion of the rotor blade and the rotating shaft, and the support plate was obtained by inverting a band-shaped plate, providing a bent portion at one end, and a locking portion at the other end. An axial compressor. 27. The axial compressor according to claim 26, wherein the support plate is formed as a strip between the bent portion and the locking portion. 28. An axial flow compressor in which a compressor stage is formed by combining a moving blade implanted on a rotating shaft and a stationary blade fixed to a casing, and wherein the compressor stages are arranged in multiple stages in the axial direction.
An axial compressor comprising a support plate provided between the implanted portion of the rotor blade and the rotating shaft, the support plate having support pieces at both ends. 29. The axial compressor according to claim 26, wherein the support plate is made of an elastic material. 30. An axial flow compressor in which a compressor stage is formed by combining a moving blade implanted on a rotating shaft and a stationary blade fixed to a casing, and wherein the compressor stages are arranged in multiple stages in the axial direction.
A cutout groove is provided in the implanted portion of the moving blade and the rotating shaft, and a fixed shaft is installed between the cutout groove of the implanted portion of the moving blade and the cutout groove of the rotating shaft. An axial compressor comprising an integrally formed anti-rotation part. 31. A rotation preventing portion formed continuously and integrally with a fixed shaft is formed by a shaft, and a cut portion is provided at a tip of the shaft to form a split piece, and the split piece is inverted. An axial compressor according to claim 30. 32. The axial compressor according to claim 30, wherein the fixed shaft is formed in an oval shape. 33. The axial flow compressor according to claim 30, wherein the cutout groove of the implanted portion of the moving blade accommodating the fixed shaft has a concave portion. 34. An axial flow compressor in which a compressor stage is constituted by combining a moving blade implanted on a rotating shaft and a stationary blade fixed to a casing, and wherein the compressor stages are arranged in multiple stages in the axial direction.
A cutout groove is provided in the implanted portion of the rotor blade and the rotating shaft, and a protrusion extending in the axial direction and provided in the circumferential direction is provided between the cutout groove of the implanted portion of the rotor blade and the cutout groove of the rotating shaft. An axial compressor characterized by having a fixed shaft.