JP2004129324A - Turbo-generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a turbo-generator which can prevent the drop of rigidity of a winding coil rolled part (coil end) after long-term operation and prevent the drop of durability caused by heat accumulation. <P>SOLUTION: This turbo-generator is equipped with a rotor 1 for generating a rotating magnetic field, and a stator core 2 provided around this rotor 1 and having a plurality of winding coils 3 stored in a plurality of slots 2a. Further, the generator has cone members 13 which are equipped with a plurality of slots 13a within and are arranged severally to engage with both ends 12, of the stator core 2 in axial direction of the rotor 1, so that the winding rolled parts 3a projected from the slots 2a of the stator core 2 out of winding coils 3 may be stored in the slots 13a, and press ring members 14 which are fixed to the internal perimeters of the cone members 13 so as to block the inside open ends of a plurality of slots 13a where the winding rolled parts 3a of the winding coils 3 are stored. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a turbine generator, and more particularly, to a turbine generator for firmly fixing a wound coil winding portion of a stator.
[0002]
[Prior art]
Generally, a turbine generator includes a rotor that generates a rotating magnetic field, and a stator core that is provided on an outer peripheral side of the rotor and has a plurality of winding coils housed and arranged in a plurality of first slots. An induced voltage is generated in the winding coil of the stator core by the rotating magnetic field, and a current flows.
[0003]
The winding coil has a straight portion supported by the first slot of the stator core, but the winding portions at both ends extend outwardly from the first slot for a considerable distance, and thus are sufficiently supported. May not. In such a case, a static electromagnetic force and an electromagnetic force that fluctuates at a frequency of about twice the power supply frequency act on the winding portion of the winding coil during operation, and an annular vibration mode excited by the electromagnetic force is applied. May cause deformation.
[0004]
To cope with this, as a structure for improving the strength of the wound coil winding portion having a substantially conical shape as a whole, as described in Japanese Patent Application Laid-Open No. 5-137287, a plurality of bindings are provided on the outer peripheral side of the winding coil winding portion. A plurality of binding rings disposed close to the ring, and a plurality of binding rings disposed around the outer periphery of the plurality of binding rings, wherein a plurality of locations of the wound coil winding portion are tightly fixed by a binding member made of, for example, glass fiber or the like via an insulator. A structure in which a support is engaged with a stator core is disclosed. Thereby, the plurality of bind ring supports support the bind ring and the wound coil rewind portion, and when the recirculation vibration mode is excited, a radial compressive load is applied by the bind member, and the diameter of the wound coil rewind portion is increased. The displacement in the direction is prevented. Also, at this time, usually, the natural frequency of the rewinding vibration mode of the winding coil winding portion is set to be sufficiently higher than the frequency of the fluctuating electromagnetic force.
[0005]
Further, as described in JP-A-8-65938, a plurality of clamps disposed on the outer peripheral side of the wound coil winding portion and fixing the wound coil winding portion with a band or the like made of, for example, a resin impregnated material, A plurality of winding supports provided with at least two support rings for mechanically connecting the plurality of clamps; and a plurality of winding supports arranged on the outer peripheral side such that a gap (gap) is formed between the plurality of clamps. A structure in which the bracket is fixed to a stator core is disclosed. As a result, the winding coil rewinding part is supported by the winding support part, and when the recirculation vibration mode is excited, a radial compressive load is applied by the clamp and the radial displacement of the winding coil rewinding part is prevented. It is supposed to be. In this conventional technique, as described above, the natural frequency of the rewinding vibration mode of the winding coil rewinding section is usually set to be sufficiently higher than the frequency of the fluctuating electromagnetic force.
[0006]
However, in the above structure, immediately after manufacturing, even if the natural frequency of the annular vibration mode of the winding coil rewinding portion is set sufficiently higher than the frequency of the fluctuating electromagnetic force, the band of the binding member or the clamp of the above structure after long-term operation. Looseness reduces the stiffness of the wound portion of the winding coil, and the natural frequency of the annular vibration mode may coincide with the frequency of the fluctuating electromagnetic force to cause resonance.
[0007]
To cope with this, as described in Japanese Patent Application Laid-Open No. 2002-27697, an insulating ring is provided on the outer peripheral side of the wound coil rewinding part, and a holding ring is provided on the inner peripheral side, and the periphery of the wound coil rewinding part is provided. There is disclosed a strong structure in which an epoxy compound formed of a composition obtained by mixing a short fiber and an inorganic filler with a modified aliphatic polyamine as a curing agent in an epoxy resin is pressure-filled and cured, and these are integrated with each other. ing. At this time, the epoxy compound cures at room temperature, so that heat treatment for curing is not required, and since the heat generation temperature during curing is low, the volume expansion is small, and almost no distortion occurs.
[0008]
[Patent Document 1]
JP-A-5-137287 [Patent Document 2]
JP-A-8-65938 [Patent Document 3]
Japanese Patent Application Laid-Open No. 2002-27697
[Problems to be solved by the invention]
However, the above prior art has the following problems.
[0010]
That is, in the structure described in Japanese Patent Application Laid-Open No. 2002-27697, the periphery of the winding coil winding portion is pressure-filled with the epoxy compound and hardened, so that heat generated due to energy loss of the current flowing through the winding coil is reduced. It is easy to dwell, and the temperature may be as high as 155 ° C. or more. When such high heat is generated, the insulator and the epoxy compound wound around the winding coil are deteriorated, the insulating function is lost, and the durability may be reduced. In addition, for example, when the winding coil is damaged or the insulation wound around the winding coil is deteriorated, etc., and the winding coil is repaired or replaced, it is necessary to remove the epoxy compound. Become.
[0011]
It is an object of the present invention to provide a turbine generator capable of preventing a decrease in rigidity of a winding coil rewind portion after a long-term operation and preventing a decrease in durability due to heat storage.
[0012]
[Means for Solving the Problems]
(1) In order to achieve the above object, the present invention provides a rotor for generating a rotating magnetic field, and a stator core provided on the outer peripheral side of the rotor and having a plurality of winding coils housed and arranged in a plurality of first slots. In the turbine generator comprising: a plurality of second slots on the inner peripheral side, so that a winding portion of the winding coil projecting from the first slot of the stator core is housed and arranged in the second slot, At least one cone member engaged and arranged on both ends of the stator core in the rotor axial direction, and at least a part of an inner peripheral opening end of the plurality of second slots accommodating and disposing the winding coil rewinding portion. And a pressing ring member fixed to the inner peripheral portion of the cone member.
[0013]
In the present invention, cone members are engaged and arranged on both ends of the stator core in the rotor axial direction. Then, after the winding coil rewinding portion protruding from the first slot of the stator core in the rotor axis direction is housed and arranged in the second slot provided on the inner peripheral side of the cone member, the inner peripheral opening end of the second slot is closed. Then, a pressing ring member is fixed to the inner peripheral side of the cone member. As a result, each of the winding coil rewinding portions is pushed into the second slot by the pressing ring member, and is firmly fixed to the cone member.
[0014]
As described above, by adopting the structure of the winding coil rewinding portion fixed in the second slot of the cone member by the pressing ring member, the turbine generator after the long-term operation as in the conventional structure by the binding of the binding member or the like is used. It is possible to prevent a decrease in the rigidity of the wound coil winding portion, and also to prevent a decrease in durability due to heat storage unlike the conventional structure in which the winding coil winding portion is integrated with epoxy resin.
[0015]
(2) In the above (1), preferably, of the wound coil rewinding portion, a portion of one coil housed and arranged in the same slot before rewinding and a portion after rewinding are wound. A spacer is provided between them.
[0016]
(3) In the above (1) or (2), preferably, the cone member has a shape whose inner peripheral surface is enlarged in diameter from the stator core side to the opposite side. The pressing ring member has a shape whose outer peripheral surface is increased in diameter from the stator core side toward the opposite side.
[0017]
(4) In the above (1) or (2), preferably, there is provided an engagement mechanism for slidably engaging the stator core in the rotation axis direction of the rotor.
[0018]
(5) In the above (2), preferably, the spacer has a plate thickness on the stator core side smaller than that on the opposite side.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0020]
FIG. 2 is a partial cross-sectional view in the axial direction showing a schematic structure of an embodiment of the turbine generator of the present invention.
In FIG. 2, the turbine generator includes a rotor 1 for generating a rotating magnetic field, and a plurality of winding coils 3 housed and arranged in a plurality of slots 2a provided on an outer peripheral side of the rotor 1 and provided on an inner peripheral side. And a stator frame 4 that houses the rotor 1 and the stator core 2.
[0021]
The rotor 1 is a rotating shaft having a substantially circular cross section, and includes at least two bearings 5 provided at both axial ends (left and right ends in FIG. 2) of the stator frame 4 (only one bearing 5 in FIG. 2). (Shown) so as to be rotatable. Further, although not shown in detail, for example, the rotor 1 has a plurality of field winding coils housed and arranged in a plurality of slots provided on the outer peripheral side, and when this field winding coil is energized, one side of the cross section is N. The pole has a polarity such that the other side is an S pole. Thus, when the rotor 1 is driven to rotate, a rotating magnetic field is generated around the rotor.
[0022]
The stator frame 4 includes a plurality of reinforcing rings 6 disposed on the outer peripheral side of the stator core 2 and an outer peripheral side of the plurality of reinforcing rings 6. The plurality of reinforcing rings 6 are respectively disposed on the inner peripheral side of the stator frame 4. A plurality of main plates 7 to be fixed, a key bar 8 adjacent to the outer peripheral side of the stator core 2, and a key bar 8 provided between the outer peripheral side of the key bar 8 and the inner peripheral side of the plurality of reinforcing rings 6, and act in a radial direction. And a plurality of spring bars 9. With such a structure of the stator frame 4, the stator core 2 is elastically supported by the plurality of spring bars 9 so as to reduce the vibration of the stator core 2 transmitted to the stator frame 4.
[0023]
As shown in the drawing, as a typical example, the wound coil 3 has a straight portion accommodated in the slot 2a of the stator core 2, and both end portions are extended outward from the slot 2a and wound back to the inner peripheral side. Then, it is stored again in the slot 2a of the stator core 2. As described above, the wound coil 3 is configured by the bottom coil 10 arranged on the outer peripheral side at a portion before being unwound and the upper coil 11 arranged on the inner peripheral side at a portion after being unwound. The rewinding portions 3a protruding from both sides of the slots 2a of the stator core 2 are formed, for example, in a generally conical shape, respectively.
[0024]
Here, as a major feature of the present invention, the turbine generator is disposed so as to be engaged with both axial end portions 12 of the stator core 2 and rewinds the winding coil 3 into a plurality of slots 13a provided on the inner peripheral side. It further includes a cone member 13 for housing and disposing the portion 3a, and a pressing ring member 14 fixed so as to cover all the inner peripheral open ends of the plurality of slots 13a of the cone member 13.
[0025]
FIGS. 1, 3, and 4 are perspective side views showing the entire structure of the cone member 13 and the press ring member 14. FIG. 1 shows a state in which the cone member 13 and the press ring member 14 are separated from each other. FIG. 3 shows a state in which the pressing ring member 14 is fixed to the inner peripheral side of the cone member 13 and a state in which the cone member 13 is separated from the stator core end portion 12, and FIG. The rewinding portion 3a of the winding coil 3 is housed and arranged in the plurality of slots 13a, and the holding member 14 is fixed to the inner peripheral side of the cone member 13, and the cone member 13 is engaged with the stator core end portion 12. This shows a state in which they are arranged. FIG. 5 is a partially enlarged sectional view of a portion A in FIG.
[0026]
1, 3, 4 and 5, the cone member 13 has a substantially hollow cylindrical shape, and has a plurality of slots 13 a having an involute curve shape (see FIG. And a plurality of teeth 13b formed between the slots 13a of the stator core 2 and extending inward. The slots 13a correspond to the slots 2a of the stator core 2 (see FIG. 6 described later). The inner peripheral surface of the cone member 13 (the inner peripheral surface of the plurality of teeth 13b) is opposite to the stator core 2 side (the right side in FIGS. 1, 3, and 4) (the left side in FIGS. 1, 3, and 4). ).
[0027]
The cross-sectional shape of the slot 13a in the radial cross section is such that the width dimension (circumferential dimension) is larger than the width of the winding coil 3 in consideration of thermal expansion, and the depth dimension (radial dimension) is from the stator core 2 side. It is getting bigger toward the other side. Thereby, when the rewinding portion 3a of the winding coil 3 is housed and arranged in the plurality of slots 13a of the cone member 13, the inner peripheral surface of the cone member 13 and the inner peripheral surface of the rewinding portion 3a (in the plurality of upper coils 11). (Peripheral surface).
[0028]
On the stator core 2 side of the cone member 13, a small-diameter cylindrical portion 13 d having a step portion 13 c as a boundary is formed. A plurality of locking members 15 are attached to the step portion 13c and the small-diameter cylindrical portion 13d in the circumferential direction, and the locking members 15 are formed with substantially circular insertion holes 15a, respectively. On the cone member 13 side of the stator core end portion 12, a concave portion 12 a that fits into the small-diameter cylindrical portion 13 d of the cone member 13 is formed, and the concave portion 12 a and the end face portion 12 b on the core member 13 side have a cone. A plurality of locking tools 16 are respectively provided corresponding to the plurality of locking tools 15 of the member 13. The locking member 16 includes two locking pieces 16A and 16B (see FIG. 5) that are arranged so as to sandwich both sides of the locking member 15 (front and back sides in FIG. 5). (Only the middle 16A is shown), and these locking pieces 16A, 16B are formed with substantially square insertion holes 16a, 16a, respectively.
[0029]
Then, as shown in FIGS. 4 and 5, the plurality of locking members 15 of the cone member 13 are inserted into the plurality of locking members 16 of the stator core end portion 12 (in other words, between the locking pieces 16A and 16B), A pin (round bar) 17 is inserted into the insertion hole 15a of the locking tool 15 and the insertion holes 16a, 16a of the locking tool 16, respectively, and the pin 17 is adhesively fixed to the insertion hole 15a of the locking tool 15. Is done. Further, in the insertion holes 16a, 16a of the locking pieces 16A, 16B, sliding on the upper and lower sides of the pin 17 (upper and lower sides in FIGS. 4 and 5) made of a resin material such as fluororesin, for example. A plate 18 is attached, and a closing plate (not shown) is fixed to the outside so as to cover both ends of the pin 17, whereby the pin 17 does not come out of the insertion holes 16a, 16a and the sliding plates 18, 18 do not come off. It slides in the axial direction. As a result, the cone member 13 is engaged with the stator core end 12 and is slidable in the axial direction.
[0030]
The pressing ring member 14 has a substantially conical shape corresponding to the inner peripheral surface of the cone member 13, and its outer peripheral surface has a shape whose diameter is increased from the stator core 2 side toward the opposite side. Further, a plurality of screw holes 13 e are provided on the inner peripheral surface of the cone member 13, and a plurality of through holes 14 a are provided in the holding ring member 14 corresponding to the plurality of screw holes 13 e of the cone member 13, respectively. I have. Then, the press ring member 14 is brought into close contact with the inner peripheral surface of the cone member 13, and a bolt 19 or the like is inserted from each through hole 14 a into the screw hole 13 e and tightened. Fixed to the surface.
[0031]
Further, the cone member 13 and the holding ring member 14 are preferably formed of a non-conductive, non-magnetic, heat-resistant, and low-density material such as fiber-reinforced plastic (or mica, asbestos, or the like). The fiber direction is oriented in the circumferential direction. The fiber reinforced plastic is, for example, polyamide imide, polyamide, polyurethane, polyacrylonitrile, polycarbonate, polyethylene terephthalate, polyvinyl alcohol, polyvinyl acetal, fluororesin, ethylene / vinyl acetate copolymer, styrene as specific examples of the base material.・ Acrylonitrile copolymer, styrene-acrylonitrile-butadiene copolymer, etc. are used.
[0032]
Next, a method for arranging the rewinding portion 3a of the winding coil 3 in the plurality of slots 13a of the cone member 13 engaged with the stator core end portion 12 will be described. FIG. 6 is a perspective view of the inner peripheral surface of the cone member 13 as viewed from the diameter-increase side. In FIG. 6, only a part of the slot 2a of the stator core 2 and the slot 13a of the cone member 13 are shown for convenience.
[0033]
In FIG. 6, first, the bottom coil 10 is disposed in the linear slot 2 a of the stator core 2 and the involute curved slot 13 a of the cone member 13. Next, a spacer 20 formed of, for example, a fiber-reinforced plastic is disposed on the inner peripheral side of the bottom coil 10 in the slot 13 a of the cone member 13. The spacer 20 has the same shape as the involute curved slot 13a, and its longitudinal dimension is at least shorter than the axial dimension of the cone member 12, and its plate thickness is relatively large on the stator core 2 side (the inner side in FIG. 6). It is formed so as to be thin and increase in thickness toward the opposite side (front side in FIG. 6). The upper coil 11 is disposed on the inner peripheral side of the bottom coil 10 in the slot 2 a of the stator core 2 and on the inner peripheral side of the spacer 20 in the slot 13 a of the cone member 13.
[0034]
After the bottom coil 10, the spacer 20, and the upper coil 11 are respectively housed and arranged in the slots 13a of the cone member 13, the pressing ring member 14 is provided on the inner peripheral surface of the cone member 13 with a plurality of bolts 19 or the like. Fixed at. Then, ends of the bottom coil 10 and the upper coil 11 protruding from the slot 13a are respectively connected by welding or the like, so that a rewind portion 3a of the winding coil 3 is formed.
[0035]
In the above description, the locking member 15, the locking member 16, the pin 17, and the sliding plate 18 engage the cone member described in each claim with the stator core so as to be slidable in the rotation axis direction of the rotor. An engagement mechanism is configured.
[0036]
Next, the operation, operation, and effect of the present embodiment will be described.
[0037]
In the turbine generator, when the rotor 1 is rotated by a driving force of, for example, a gas turbine or the like, a rotating magnetic field is generated around the rotor 1, and an induced voltage is applied to the winding coil 3 housed and arranged in the plurality of slots 2 a of the stator core 2. And current flows. At this time, a static electromagnetic force and an electromagnetic force fluctuating at a frequency of about twice the power supply frequency act on the rewinding portion 3a of the winding coil 3 protruding from the plurality of slots 2a of the stator core 2 on both sides. It tends to be deformed by the ring vibration mode excited by the force.
[0038]
In the present embodiment, the cone members 13 are engaged and arranged on both axial ends of the stator core 2. Then, after winding back portions 3a of the winding coils 3 projecting in the axial direction from the plurality of slots 2a of the stator core 2 are accommodated and arranged in the plurality of slots 13a provided on the inner peripheral side of the cone member 13, the inner periphery of the slots 13a is The pressing ring member 14 is fixed to the inner peripheral side of the cone member 13 with a bolt 19 so as to cover the entire side opening end. As a result, the rewind portion 3a of the coil 3 is pushed into the plurality of slots 13a by the holding ring member 14, and is firmly fixed to the cone member 13.
[0039]
As described above, by employing the structure of the rewinding portion 3a of the winding coil 3 fixed in the slot 13a of the cone member 13 by the holding ring member 14, the turbine generator as in the conventional structure by binding the binding member or the like is used. Of the winding coil 3 after the long-term operation can be prevented from lowering in rigidity, and the durability can be prevented from lowering due to heat storage as in the conventional structure in which the winding part 3a of the winding coil 3 is integrated with epoxy resin.
[0040]
Further, since the cone member 13 is engaged with the stator core end portion 12 so as to be slidable in the axial direction, it can cope with expansion and contraction in the axial direction due to thermal expansion of the winding coil 3. Further, by making the holding ring member 14 detachable with the bolt 19, workability such as repair / replacement of the wound coil 3 is improved as compared with the conventional structure in which the rewind portion 3a of the wound coil 3 is integrated with epoxy resin. Can be improved.
[0041]
In the above-described embodiment, the cone member 13 has a structure having a plurality of slots 13a over the entire circumferential direction on the inner circumferential side, and one pressing ring member 14 is provided on the inner circumferential side of the plurality of slots 13a of the cone member 13. Although the configuration in which the entire open end is fixed so as to be closed has been described as an example, the configuration is not limited to this. That is, for example, the structure and configuration may be such that the cone member 13 or the pressing ring member 14 of the above embodiment is divided. FIG. 9 is a perspective side view showing a schematic structure of a cone member and a press ring member of such a modification. The same parts as those in the embodiment of the present invention are denoted by the same reference numerals, and the description will be appropriately omitted.
[0042]
In FIG. 9, the cone member 21 is composed of cone portions 21A, 21B, 21C, and 21D each of which is formed by dividing the cone member 13 of the above-described embodiment into four substantially in the circumferential direction, and the cone portions 21A, 21B, 21C, and 21D. It is composed of four support members 21E connecting between them. The pressing ring members 22A, 22B, and 22C have a shape in which the pressing ring member 14 of the above-described embodiment is substantially divided into three in the axial direction, and a part of the inner peripheral opening ends of the plurality of slots 21a of the cone member 21. Is fixed so as to close each.
[0043]
In the present modified example, the rewinding portions 3a of the winding coils 3 projecting from the slots 2a of the stator core 2 to the cone portions 21A, 21B, 21C, 21D are stored and arranged in the plurality of slots 21a, respectively, as in the above-described embodiment. Pressing ring members 22A, 22B, and 22C are fixed to the inner peripheral side of the cone member 21 so as to partially close the inner peripheral opening ends of the slots 21a. As a result, the rewinding portion 3a of the winding coil 3 is pushed into the plurality of slots 21a by the holding ring members 22A, 22B, and 22C, and is firmly fixed to the cone member 21. Further, the rewinding portion 3a of the winding coil 3 projecting from the slot 2a of the stator core 2 to between the cone portions 21A, 21B, 21C, 21D is replaced with the support member 21E instead of the spacer 20, and the bottom coil 10 and the upper coil 11 respectively. And the pressing ring members 22A, 21B, 21C fixed to the inner peripheral side of the cone member 21 suppress radial deformation. In such a modification, the same effect as in the above embodiment can be obtained. Further, the cone member 21 and the holding ring members 22A, 22B, and 22C are lighter in weight than the cone member 13 and the holding ring member 14 of the above embodiment, and also have the effect of reducing costs such as material costs.
[0044]
【The invention's effect】
Advantageous Effects of Invention According to the present invention, it is possible to prevent a decrease in rigidity of a wound portion of a winding coil after a long-term operation, and a decrease in durability due to heat storage.
[Brief description of the drawings]
FIG. 1 is a perspective side view showing the entire structure of a cone member and a press ring member that constitute one embodiment of a turbine generator of the present invention, and shows a state where the cone member and the press ring member are separated. ing.
FIG. 2 is a partial cross-sectional view in an axial direction showing a schematic structure of an embodiment of the turbine generator of the present invention.
FIG. 3 is a perspective side view showing the entire structure of a cone member and a holding ring member that constitute one embodiment of the turbine generator of the present invention, with the holding ring member fixed to the inner peripheral side of the cone member. In addition, the state where the cone member is separated from the end of the stator core is shown.
FIG. 4 is a perspective side view showing the entire structure of a cone member and a holding ring member which constitute one embodiment of the turbine generator of the present invention, and a winding portion of a winding coil is housed in a plurality of slots of the cone member. This shows a state in which the pressing ring member is fixed to the inner peripheral side of the cone member and the cone member is engaged with the end of the stator core.
5 is a partially enlarged cross-sectional view of a portion A in FIG. 2 and is a diagram illustrating a detailed structure of a cone member constituting a turbine generator according to an embodiment of the present invention on a stator core side.
FIG. 6 is a diagram for explaining a method of arranging a winding portion of a winding coil constituting an embodiment of the turbine generator of the present invention.
FIG. 7 is a perspective side view showing the entire structure of a cone member and a holding ring member constituting a modification of the turbine generator of the present invention, showing a state where the cone member and the holding ring member are separated from each other. I have.
[Explanation of symbols]
1 rotor 2 stator core 2a slot (first slot)
3 Winding coil 3a Rewinding part 10 Bottom coil (part before winding coil is unwound)
11 Upper coil (the part after the winding coil is unwound)
12 Stator core end 13 Cone member 13a Slot (second slot)
14 Holding ring member 15 Locking tool (engaging mechanism)
16 Locking device (engaging mechanism)
17 pin (engagement mechanism)
18 Sliding plate (engagement mechanism)
20 Spacer

Claims (5)

In a turbine generator comprising: a rotor that generates a rotating magnetic field; and a stator core that is provided on an outer peripheral side of the rotor and has a plurality of winding coils housed and arranged in a plurality of first slots.
A plurality of second slots are provided on the inner peripheral side, and both ends of the stator core in the rotor axial direction are arranged so that a rewinding portion of the winding coil projecting from the first slot of the stator core is housed in the second slot. At least one cone member respectively engaged on the side,
A press ring member fixed to an inner peripheral portion of the cone member so as to cover at least a part of an inner peripheral opening end of the plurality of second slots in which the winding coil rewinding portion is housed and arranged. Characteristic turbine generator. The turbine generator according to claim 1, wherein, of the wound coil rewinding portion, a portion of one coil housed and arranged in the same slot is between a portion before rewinding and a portion after rewinding. And a spacer provided with a spacer. 3. The turbine generator according to claim 1, wherein an inner peripheral surface of the cone member has a shape whose diameter is increased from the stator core side to an opposite side, and the pressing ring is correspondingly provided. 4. A turbine generator, wherein the member has a shape whose outer peripheral surface is increased in diameter from the stator core side to the opposite side. 3. The turbine generator according to claim 1, further comprising an engagement mechanism that engages the cone member with the stator core so as to be slidable in a rotation axis direction of the rotor. 4. 3. The turbine generator according to claim 2, wherein the spacer has a plate thickness on the stator core side smaller than a plate thickness on the opposite side. 4.

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