JP5762009B2 - Rotating electric machine - Google Patents

Description

  The present invention relates to a rotating electrical machine in which, for example, a three-phase lead bushing for extracting electric power to the outside is disposed above a frame of the rotating electrical machine.

  Conventionally, since many power plants where rotating electrical machines are installed are constructed on the coast, ships and trucks are mainly used for transporting rotating electrical machines. However, when transported to inland power plants, rail transport is often performed because rail transport is cheaper than truck transport, but dimensions are used to avoid interference with tunnels during rail transport. It is necessary to satisfy the restrictions.

  Generally, in a rotating electrical machine, for example, as shown in FIGS. 15 and 16, a lead box 2 is attached to the frame 1 by welding on the top of the frame 1, and lead bushings 3 a, 3 b, 3 c are attached to the top of the lead box 2. Cylinders 4a, 4b, 4c covering each are welded to the lead box 2.

  The three-phase output leads 5a, 5b, 5c are taken out from the frame 1 through lead take-out portions 6a, 6b, 6c formed in the frame 1, and lead bushings 3a, 3b are connected to the output leads 5a, 5b, 5c, respectively. , 3c are provided.

Japanese Utility Model Publication No. 63-51556 JP 60-183950 A JP-A-7-194050 Japanese Patent Laid-Open No. 2003-244889 Japanese Utility Model Publication No. 62-111766

  In the conventional rotating electric machine described above, the lead box 2 is attached to the frame 1 by welding on the upper part of the frame 1, and the cylinders 4a, 4b, 4c covering the lead bushings 3a, 3b, 3c are provided on the upper part of the lead box 2, respectively. Since it is welded and attached to the lead box 2, the dimension in the height direction becomes large.

  When transporting by ship or truck, there will be no problem if the frame 1, lead box 2, and cylinders 4a, 4b, 4c are transported as a unit. When doing so, it is necessary to satisfy dimensional restrictions in order to avoid interference with tunnels and the like.

  As means for satisfying the dimensional restriction, as shown in FIG. 17, it can be considered that the cylinders 4a, 4b, 4c are detachably attached to the lead box 2 by bolt fastening. FIG. 17 shows a state in which the frame 1 is placed on the transportation platform 7 of the freight car 6 and passes through the tunnel 8. Even when the cylinders 4a, 4b, 4c are removed, the corner 2a of the lead box 2 is There was a problem of interference with the tunnel 8.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a rotating electrical machine that can be made compact in the height direction.

The rotating electrical machine according to the present invention includes a frame in which three-phase output leads for taking out electric power to the outside are arranged, and lead take-out portions for taking out the output leads to the outside, respectively, and leads provided in the output leads, respectively. A bushing is inserted through the inner peripheral surface at a distance from each other, and a cylindrical cylinder is attached to each of the lead extraction portions of the frame so as to be positioned on the outer peripheral side of the frame; The cylinder is provided with a mounting flange provided on the lead extraction part side and a cylinder mounting seat provided on each of the lead extraction parts of the frame, and the cylinder located in the center is arranged in the vertical direction and is located on both sides The mounting flange side of the cylinder is arranged radially and located on both sides of the cylinder The opposite side of the mounting flange are those arranged in parallel with the cylinder positioned in the center is bent in the vertical direction.

  According to the rotating electrical machine according to the present invention, it is possible to obtain a rotating electrical machine that can be made compact in the height direction.

It is a front view which shows the state before attachment of the cylinder in the rotary electric machine concerning Embodiment 1 of this invention. It is a front view which shows the state after attachment of the cylinder in the rotary electric machine concerning Embodiment 1 of this invention. It is a front view which shows the transport state in the rotary electric machine concerning Embodiment 1 of this invention.

It is a front view which shows the state before attachment of the cylinder in the rotary electric machine concerning Embodiment 2 of this invention. It is a front view which shows the state after attachment of the cylinder in the rotary electric machine concerning Embodiment 2 of this invention. It is the figure seen from the arrow A of the cylinder in the rotary electric machine concerning Embodiment 2 of this invention. It is a front view which shows the state before attachment of the cylinder in the rotary electric machine concerning Embodiment 3 of this invention. It is a front view which shows the state before attachment of the cylinder in the rotary electric machine concerning Embodiment 4 of this invention. It is a front view which shows the state before attachment of the cylinder in the rotary electric machine concerning Embodiment 5 of this invention.

It is a front view which shows the state before attachment of the cylinder in the rotary electric machine concerning Embodiment 6 of this invention. It is the P section enlarged view of FIG. 10 which shows the rotary electric machine concerning Embodiment 6 of this invention. It is a front view which shows the state before attachment of the cylinder in the rotary electric machine concerning Embodiment 7 of this invention. It is the Q section enlarged view of FIG. 12 which shows the rotary electric machine concerning Embodiment 7 of this invention. It is a front view which shows the state before attachment of the cylinder in the rotary electric machine concerning Embodiment 8 of this invention.

It is a front view which shows the conventional rotary electric machine. It is principal part sectional drawing which shows the conventional rotary electric machine. It is a front view which shows the transport state in the conventional rotary electric machine.

Embodiment 1 FIG.
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 3. In the drawings, the same or equivalent members and parts will be described with the same reference numerals. 1 is a front view showing a state before attachment of a cylinder in a rotary electric machine according to Embodiment 1 of the present invention. FIG. 2 is a front view showing a state after the cylinder is mounted in the rotary electric machine according to Embodiment 1 of the present invention. FIG. 3 is a front view showing a transport state in the rotary electric machine according to Embodiment 1 of the present invention.

  In each of these drawings, the frame 1 is formed with lead extraction portions 6a, 6b, and 6c at the top for extracting the same three-phase output leads (not shown) as those described above to the outside.

  In the lead extraction portions 6a, 6b, 6c formed on the upper portion of the frame 1, the lead extraction portions 6a of the frame 1 are respectively covered so as to cover lead bushings (not shown) provided on the output leads (not shown). , 6b, and 6c are provided with cylindrical cylinders 9a, 9b, and 9c, respectively.

  The cylindrical cylinders 9a, 9b, and 9c are cylindrical, and the lead extraction portions 6a, 6b, and 6c of the cylinder 9a, 9b, and 9c have arcuate surfaces 9a1, 9b1, and 9c1 along the outer peripheral shape of the frame 1, respectively. 1, are installed in the direction of the arrow in FIG. 1, and as shown in FIG. 2, the cylinders 9a, 9b, 9c are attached, for example, radially to the lead extraction portions 6a, 6b, 6c of the frame 1 by welding.

  According to the first embodiment, the cylinders 9a, 9b, and 9c are attached to the lead extraction portions 6a, 6b, and 6c of the frame 1 by welding without providing the lead box 2 on the upper part of the frame 1, respectively. A rotating electrical machine that can be compact in the vertical direction can be obtained.

  Further, since it is not necessary to provide the lead box 2, the material cost and processing cost of the lead box 2 can be reduced.

  Moreover, when transporting using a ship or a truck, it is needless to say that it can be transported without any trouble as in the conventional one described above. Even in the case of rail transport, as shown in FIG. 3, the rail transport can be performed without any interference to the tunnel 8 or the like.

  The cylinders 9a, 9b, and 9c are described as being radially attached to the lead extraction portions 6a, 6b, and 6c of the frame 1 by welding, for example. However, the present invention is not limited to this, and the cylinders 9a, 9b are not limited thereto. , 9c can be mounted parallel to the vertical direction, for example.

Embodiment 2. FIG.
A second embodiment of the present invention will be described with reference to FIGS. 4 to 6. In the drawings, the same or corresponding members and parts are described with the same reference numerals. 4 is a front view showing a state before attachment of a cylinder in a rotary electric machine according to Embodiment 2 of the present invention. FIG. 5 is a front view showing a state after the cylinder is mounted in the rotary electric machine according to Embodiment 2 of the present invention. FIG. 6 is a view seen from an arrow A of the cylinder in the rotating electrical machine according to the second embodiment of the present invention.

In the above-described first embodiment, the case where the cylinders 9a, 9b, and 9c are respectively attached to the lead extraction portions 6a, 6b, and 6c of the frame 1 by welding has been described. In the second embodiment, the welding is performed. It is not a mounting structure by, but a detachable mounting structure using bolts.

  Mounting flanges 10a, 10b, and 10c are provided on the lead extraction portions 6a, 6b, and 6c of the frame 9 of the cylinders 9a, 9b, and 9c, and the mounting flanges 10a, 10b, and 10c are configured in an arc shape along the outer peripheral shape of the frame 1. Has been.

  The cylinders 9a, 9b, 9c provided with the mounting flanges 10a, 10b, 10c are installed in the direction of the arrow in FIG. 4, and as shown in FIGS. 5 and 6, the cylinders 9a, 9b, 9c are mounted on the mounting flanges 10a, 10b. , 10c are fastened by bolts 11, respectively, and attached to the lead take-out portions 6a, 6b, 6c of the frame 1, for example, radially.

  6 shows a state in which the central cylinder 9b is viewed from the direction of arrow A, the cylinders 9a and 9c on both sides have the same configuration as the central cylinder 9b.

  According to the second embodiment, the cylinders 9a, 9b, and 9c can be easily attached to the lead take-out portions 6a, 6b, and 6c of the frame 1 by the bolts 11, and the rotation in which the height can be made compact. An electric machine can be obtained.

  Further, since it is not necessary to provide the lead box 2, the material cost and processing cost of the lead box 2 can be reduced.

  Furthermore, by adopting the mounting structure using the bolts 11, the working time can be shortened as compared with the mounting structure using welding as in the first embodiment described above, and the influence of distortion caused by welding is eliminated.

  When transporting by ship or truck, or when transporting by rail, the cylinders 9a, 9b, 9c are attached to the lead extraction portions 6a, 6b, 6c of the frame 1 with bolts 11 as they are. It may be transported. Further, when the height of the tunnel 8 or the like is restricted during railway transportation, the cylinders 9a, 9b, and 9c can be removed for transportation.

Embodiment 3 FIG.
A third embodiment of the present invention will be described with reference to FIG. 7. In the figure, the same or corresponding members and parts will be described with the same reference numerals. FIG. 7: is a front view which shows the state before attachment of the cylinder in the rotary electric machine concerning Embodiment 3 of this invention.

  In the second embodiment described above, the mounting surfaces of 9a, 9b, 9c provided on the side of the lead extraction portions 6a, 6b, 6c of the frame 1 of the cylinders 9a, 9b, 9c have an arc shape along the outer peripheral shape of the frame 1. As described above, the mounting flanges 10a, 10b, and 10c are attached to the curved surface of the frame 1 by fastening with bolts 11, and the frame 1 and the cylinder 9a, The mounting surfaces 9b and 9c need to be processed with high accuracy.

In the third embodiment, the flat portions 12a, 12b, and 12c are formed by processing the peripheral portions of the lead extraction portions 6a, 6b, and 6c of the frame 1, respectively, and the shape is parallel to the flat portions 12a, 12b, and 12c. Mounting flanges 13a, 13b, and 13c having flat surfaces 13a1, 13b1, and 13c1 are provided on the lead extraction portions 6a, 6b, and 6c side of the frame 1 of the cylinders 9a, 9b, and 9c. In addition, since the flat portions 12a, 12b, and 12c are processed in the frame 1, the thickness of the frame 1 is thicker than that of the above-described second embodiment from the viewpoint of securing the strength, for example, a range of 125 mm to 150 mm. Consists of.

  According to the third embodiment, the mounting flanges 13a, 13b, 13c having the flat surfaces 13a1, 13b1, 13c1 of the cylinders 9a, 9b, 9c are processed into the peripheral portions of the lead extraction portions 6a, 6b, 6c of the frame 1. The formed flat portions 12a, 12b, and 12c can be attached with high precision by fastening bolts 11 (not shown), and can improve the manufacturability and improve the gas sealing performance as compared with the second embodiment. it can.

Embodiment 4 FIG.
A fourth embodiment of the present invention will be described with reference to FIG. 8. In the figure, the same or corresponding members and parts will be described with the same reference numerals. FIG. 8 is a front view showing a state before attachment of a cylinder in a rotary electric machine according to Embodiment 4 of the present invention.

  In the third embodiment described above, since the flat portions 12a, 12b, and 12c are processed at the peripheral portions of the lead extraction portions 6a, 6b, and 6c of the frame 1, the thickness of the frame 1 is thick from the viewpoint of ensuring strength. The material cost becomes high.

  In the fourth embodiment, cylinder mounting seats 14a, 14b, and 14c that are disposed along the outer peripheral surface of the frame 1 and have mounting seat surfaces are attached to the lead take-out portions 6a, 6b, and 6c of the frame 1 by, for example, welding. It has been.

  According to the fourth embodiment, the cylinders 9a, 9b, 9c are mounted on the cylinders in which the mounting flanges 13a, 13b, 13c having the flat surfaces 13a1, 13b1, 13c1 are arranged on the lead extraction portions 6a, 6b, 6c of the frame 1. The seats 14a, 14b, and 14c can be attached to the mounting seat surfaces with high accuracy by fastening bolts 11 (not shown).

  Thus, by arranging the cylinder mounting seats 14a, 14b, and 14c in the lead extraction portions 6a, 6b, and 6c of the frame 1, the lead extraction portions 6a, 6b, and 6c of the frame 1 as in the third embodiment described above. It is not necessary to process the flat portions 12a, 12b, and 12c on the peripheral edge of the 6c, that is, there is no need to increase the plate thickness of the frame 1, so that the material cost and processing of the frame 1 are higher than those of the third embodiment. Costs can be reduced.

Embodiment 5 FIG.
Embodiment 5 of the present invention will be described with reference to FIG. 9, and the same or corresponding members and parts will be described with the same reference numerals. FIG. 9 is a front view showing a state before attachment of a cylinder in a rotary electric machine according to Embodiment 5 of the present invention.

  In the above-described fourth embodiment, the cylinder mounting seats 14a, 14b, 14c are arranged along the outer peripheral surface of the frame 1 in the lead extraction portions 6a, 6b, 6c of the frame 1, so that the cylinder mounting seats 14a, 14b are arranged. , 14c are mounted radially by fastening bolts 11 (not shown) to the mounting seat surfaces of the cylinders 9a, 9b, 9c. When the cylinders 9a, 9b, and 9c are arranged radially, the position of the connection portion between the lead bushing (not shown) and the power transmission bus (not shown) differs from the conventional machine, and the power transmission bus (not shown) or neutral It is necessary to change the structure of the lead (not shown).

  In the fifth embodiment, the cylinders positioned at both ends of a three-phase lead bushing (not shown) are directed vertically upward, and the mounting surfaces of the mounting flanges are slanted so that each phase is on the same plane and the power transmission bus (Not shown) can be connected.

That is, the mounting flanges 13a, 13b, and 13c arranged in parallel to the mounting seat surfaces of the cylinder mounting seats 14a, 14b, and 14c arranged in the lead extraction portions 6a, 6b, and 6c of the frame 1 are respectively parallel to the vertical direction. Arranged are cylinders 15a, 15b, 15c. When viewed from the cylinders 15a and 15c, the mounting flanges 13a and 13c are arranged obliquely. The opposite sides of the mounting flanges 13a, 13b, 13c of the cylinders 15a, 15b, 15c are configured in the same plane.

  According to the fifth embodiment, the cylinders 15a, 15b, and 15c are arranged in parallel to the cylinder mounting seats 14a, 14b, and 14c arranged in the lead extraction portions 6a, 6b, and 6c of the frame 1 in the vertical direction. It is possible to minimize the structural change of the power transmission bus (not shown) and the neutral lead (not shown).

Embodiment 6 FIG.
A sixth embodiment of the present invention will be described with reference to FIGS. 10 and 11. In the drawings, the same or corresponding members and parts will be described with the same reference numerals. 10 is a front view showing a state before attachment of a cylinder in a rotary electric machine according to Embodiment 6 of the present invention. FIG. 11 is an enlarged view of a portion P in FIG. 10 showing a rotary electric machine according to Embodiment 6 of the present invention.

  In the fifth embodiment described above, the output leads (not shown) in the cylinders 15a, 15b, 15c descend to the frame 1 with the interphase pitch, so the wiring of the output leads (not shown) in the frame 1 is performed. Needs to be significantly changed.

  In the sixth embodiment, cylinder mounting seats 16a, 16b, and 16c are arranged in the lead take-out portions 6a, 6b, and 6c of the frame 1. The plate thickness dimensions of these cylinder mounting seats 16a, 16b, 16c are thicker than the frame thickness dimensions of the frame 1, as shown in FIG.

  Mounting flanges 13a, 13b, and 13c are arranged in parallel with the mounting seat surfaces of the cylinder mounting seats 16a, 16b, and 16c. The cylinder 17b located in the center having the mounting flange 13b is arranged vertically, and the cylinders 17a, 17c located on both sides having the mounting flanges 13a, 13c are arranged radially and located on both sides. The opposite sides of the mounting flanges 13a and 13c of the cylinders 17a and 17c are bent in the vertical direction and arranged in parallel with the cylinder 17b located in the center. The opposite sides of the mounting flanges 13a, 13b, and 13c of the cylinders 17a, 17b, and 17c are configured in the same plane.

  According to the sixth embodiment, the cylinder 17b located at the center is arranged vertically, the mounting flanges 13a, 13c side of the cylinders 17a, 17c located on both sides are arranged radially, and the cylinders 17a, 17c located on both sides are arranged radially. The opposite side of the mounting flanges 13a and 13c of 17c is bent in the vertical direction and arranged in parallel with the cylinder 17b located in the center, so that the change of the wiring of the output lead (not shown) can be reduced to the minimum. Is possible.

Embodiment 7 FIG.
A seventh embodiment of the present invention will be described with reference to FIGS. 12 and 13. In the drawings, the same or equivalent members and parts will be described with the same reference numerals. FIG. 12: is a front view which shows the state before attachment of the cylinder in the rotary electric machine concerning Embodiment 7 of this invention. 13 is an enlarged view of a Q portion in FIG. 12 showing a rotary electric machine according to Embodiment 7 of the present invention.

  In the sixth embodiment described above, as shown in FIG. 11, the plate thickness dimensions of the cylinder mounting seats 16a, 16b, and 16c are thicker than the plate thickness dimensions of the frame 1, and the cylinder mounting seats. Time is required for the height adjustment work of 16a, 16b, and 16c.

  In the seventh embodiment, the positions where the lower surfaces of the cylinder mounting seats 18a, 18b, 18c arranged in the lead take-out portions 6a, 6b, 6c of the frame 1 are in contact with the frame 1 at the peripheral portions of the lead take-out portions 6a, 6b, 6c. Is arranged. Other configurations are the same as those in the sixth embodiment.

  According to the seventh embodiment, the cylinder mounting seat 18a can be simply secured by welding by disposing the lower surfaces of the cylinder mounting seats 18a, 18b, 18c at positions where they are in contact with the frame 1 at the peripheral portions of the lead extraction portions 6a, 6b, 6c. , 18b, 18c can be adjusted, the time for adjusting the height of the cylinder mounting seats 18a, 18b, 18c can be shortened, and the thickness of the cylinder mounting seats 18a, 18b, 18c can be reduced. It becomes possible. Moreover, since the plate | board thickness dimension of cylinder mounting seat 18a, 18b, 18c can be reduced, reduction of material cost is also attained.

Embodiment 8 FIG.
Embodiment 8 of the present invention will be described with reference to FIG. 14. In the figure, the same or corresponding members and parts will be described with the same reference numerals. FIG. 14 is a front view showing a state before attachment of a cylinder in a rotary electric machine according to Embodiment 8 of the present invention.

  In the seventh embodiment described above, the cylinder mounting seats 18a, 18b, 18c are divided for each phase and the strength and rigidity of the cylinder mounting seats 18a, 18b, 18c may be reduced. Further, the amount of deflection of each cylinder cylinder 17a, 17b, 17c, in particular, the cylinders 17a, 17c on both sides, is increased by welding or gas pressure in the rotating electrical machine.

  In the eighth embodiment, the cylinder mounting seats are not divided and arranged in each phase, but the cylinder mounting seats are combined and a plurality or all of them are integrated. As shown in FIG. 14, for example, the cylinder mounting seat 19 is formed as a whole. Other configurations are the same as those in the sixth embodiment.

  According to the eighth embodiment, as shown in FIG. 14, for example, by making the whole cylinder mounting seat 19 integrated, the effect of improving the strength and rigidity of the cylinder mounting seat 19 can be obtained.

  The present invention is suitable for realizing a rotating electrical machine that can be made compact in the height direction.

1 frame 3a lead bushing 3b lead bushing 3c lead bushing 6a lead take-out part 6b lead take-out part 6c lead take-out part 9a cylinder 9b cylinder 9c cylinder 10a flange 10b flange 10c flange 11 bolt 12a flat part 12b flat part 12c flat part 12c flat part 12c flat part 12c flat part 12c flat part 13c 13c Flange 14a Cylinder mounting seat 14b Cylinder mounting seat 14c Cylinder mounting seat 15a Cylinder 15b Cylinder 15c Cylinder 16a Cylinder mounting seat 16b Cylinder mounting seat 16c Cylinder mounting seat 17a Cylinder 17b Cylinder 17c Cylinder 18a Cylinder mounting seat 18b Cylinder mounting seat 18c 19 Cylinder mounting seat

Claims (1)

A frame in which three-phase output leads for taking out electric power to the outside are arranged and lead take-out portions for taking out the output leads to the outside are respectively formed on the upper side, and lead bushings provided on the output leads are spaced from the inner peripheral surface A cylindrical cylinder that is respectively inserted through and attached to each of the lead extraction portions of the frame and located on the outer peripheral side of the frame, and provided on the lead extraction portion side of the frame of the cylinder A mounting flange and a cylinder mounting seat provided at each of the lead take-out portions of the frame, wherein the cylinder located in the center is arranged in a vertical direction, and the mounting flange side of the cylinder located on both sides is radially formed The opposite side of the mounting flange of the cylinder located and on both sides is Rotating electric machine, characterized in that arranged in parallel with the cylinder positioned in the center is bent in the perpendicular direction.

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