JP2000245095A - Turbine generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lock connected conductors in uniform supporting rigidity for restraint of the generation of abrasion dusts due to vibration, by integrally fixing a plurality of connected conductors, which are mounted in parallel to each other along the inner wall of a frame, by using a fixing support means. SOLUTION: A fixing support member 12 supporting connected conductors 7b in a fixing manner is formed into a roughly rectangular stick-shape. Its underside includes a plurality of grooves formed into a comb-shaped cross section to integrally fix the connected conductors 7b. The grooves are formed in parallel to each other having equal spacing so that they may be perpendicular to the longitudinal direction of the fixing support member 12 respectively. It is preferable that the fixing support member 12 is made of insulating material such as resin or wood, however, metal can be used if the insulation of the connected conductors 7b is ensured. With the connected conductors 7b fitted in the grooves of the fixing support member 12, the fixing support member 12 is fixed on a support member 11 on the inner wall of a frame 2 by fastening means such as bolts and screws. It is thus possible to fix the connected conductors with uniform supporting rigidity, thereby preventing the generation of abrasion dust due to vibration.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turbine generator, and more particularly to a turbine generator having a plurality of connecting conductors which connect a coil end and a lead conductor and are provided in parallel with each other. is there.

[0002]

2. Description of the Related Art FIGS.
1 shows a conventional turbine generator described in Japanese Patent Application Publication No. -196033. FIG. 19 is a connection diagram thereof. In these figures, 1 is a stator core formed by stacking steel plates, 2 is an inner wall of a tubular frame containing the stator core 1, and 3 and 4 are outer sides from both ends of the stator core 1, respectively. The upper and lower stator coils 5 and 5 extend from the upper stator coil 3 and the lower stator coil 4, and 6 is provided on the stator core 1 to support the coil end 5. Coil end supporting member. 7a and 7b are connection conductors that electrically connect between the coil end 5 and a lead conductor 8 (FIG. 19) for extracting electricity from the coil end 5, and 7a is a connection conductor that connects the coil end 5 and the connection conductor 7b. And 7b is a ring-shaped lead connecting the connection conductor 7a and the lead-out conductor 8. 11 corresponds to FIG. 18 and FIG.
Reference numeral 0 denotes a support member provided on the frame inner wall 2 and supporting the connection conductor 7b. Reference numeral 9 denotes a binding string for fixing the connection conductor 7b to the support member 11. This binding string 9 is made of a tape-shaped string, and is shown in FIG.
As shown in FIG. 1, in order to fix the connection conductor 7b to the support member 11, the connection conductor 7b is wound several times and then cured with a resin (not shown). The connection conductor 7b is shown in FIGS.
As shown in FIG. 0, it extends in the circumferential direction along the frame inner wall 2 and is fixed so as to be aligned in the axial direction of the frame inner wall 2. Reference numeral 10 denotes a fixing member for fixing the connection conductor 7a and the connection conductor 7b, as shown in FIG.

[0003] The conventional turbine generator is configured as described above. When the turbine generator is operated, the generated electricity is supplied from the coil end 5 extending from the stator core 1 through the connection conductors 7a and 7b. At this time, a magnetic field generated by an armature current flowing through the upper and lower stator coils 3 and 4 and a rotor coil (not shown)
The electromagnetic force acts on the coil end 5 and the stator core 1 due to the effect of the magnetic field generated by the field current flowing through the coil, whereby the coil end 5 vibrates and the vibration is applied to the connection conductors 7a and 7b. Propagate.

[0004]

In the conventional turbine generator as described above, the electromagnetic vibration acting on the coil end 5 causes the connecting conductors 7a and 7b to vibrate.
When the structure of the connection conductors 7a and 7b is close to the resonance state, problems such as loosening of the binding string 9 and generation of wear powder due to friction between the connection conductor 7b and the binding string 9 occur. In the case of (1), there is a possibility that the connection conductors 7a and 7b may be damaged.

In addition, the rigidity of the support provided by the binding string 9 varies by a factor of about 10 as shown in FIG. 22, and there is a problem that the rigidity of the support is unstable.

In addition, since the connecting conductor 7b is fixed to the support member 11 with the binding string 9 at each position,
There is also a problem that it requires a lot of work time and is inefficient in the manufacturing process. In addition, since the connection conductors 7a and 7b are indispensable members for the electrical function, it is difficult to change the structure for vibration isolation. To avoid resonance of the connection conductors 7a and 7b, A vibration test is performed on the connection conductors 7a and 7b and the like, the resonance frequency is measured, and for the connection conductors 7a and 7b near the dangerous frequency, the fixing member 1 is used.
This is done by adding 0 or by additionally winding the binding string 9, which also has the problem that the efficiency in the manufacturing process is low.

[0007] Even when the structure of the connection conductors 7a and 7b is not initially in a resonance state, there is a possibility that the binding string 9 becomes loose after long-term operation and the support rigidity is reduced. As a result, in a vibration test immediately after manufacturing, a structure that avoids the resonance frequency may be changed to near the resonance frequency.

The present invention has been made in order to solve the above-mentioned problem. Even if the vibration of the coil end is transmitted to the connection conductors 7a and 7b, the support of the fixed support means for supporting the connection conductor 7b is provided. It is an object of the present invention to obtain a turbine generator which can suppress a decrease in rigidity and suppress the generation of abrasion powder and which has an efficient manufacturing process.

[0009]

SUMMARY OF THE INVENTION In view of the above objects, the invention of claim 1 includes a frame, a stator core provided in the frame, a coil end provided in the stator core, and a coil end. The lead conductor for taking out electricity, the coil end and the lead conductor are electrically connected, and a plurality of connection conductors provided so as to be parallel to each other along the inner wall of the frame, and the connection conductors are integrally fixed. And a fixed supporting means for supporting the turbine generator.

A second aspect of the present invention is a turbine generator, wherein the fixed support means has a groove, and the connection conductor is fitted in the groove to fix and support the connection conductor.

According to a third aspect of the present invention, there is provided a turbine generator wherein the fixed support means has a viscoelastic member provided in the groove.

According to a fourth aspect of the present invention, there is provided a turbine generator wherein the fixed support means is made of a viscoelastic body.

According to a fifth aspect of the present invention, there is provided a turbine generator wherein the fixed support means is made of a hardening resin and fixedly supported by integrally sealing the connection conductor.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a partial side view showing the configuration of the turbine generator according to Embodiment 1 of the present invention. FIG. 2 is a partial perspective view showing a fixed support state of the coil end connection conductor in the turbine generator. In these figures, 1 is a stator core formed by laminating steel plates, 2 is an inner wall of a tubular frame containing the stator core 1, and 3 and 4 are upper fixings extending from both ends of the stator core 1. The stator coil and the lower stator coil, 5 is a coil end composed of the upper stator coil 3 and the lower stator coil 4, and 6 is a coil end supporting member provided on the stator core and supporting the coil end 5. is there. 7a and 7b are connection conductors for electrically connecting the coil end 5 and the lead conductor 8, 7a is a lead wire connecting the coil end 5 and the connection conductor 7b, and 7b is a connection wire. It consists of a ring-shaped lead wire connecting the conductor 7a and the lead conductor 8. The connection conductor 7b is, as shown in FIGS.
It extends in the circumferential direction along the frame inner wall 2 and is fixed so as to be aligned in the axial direction of the frame inner wall 2. Reference numeral 11 denotes a support member provided on the frame inner wall 2 and supporting the connection conductor 7b.

Reference numeral 12 denotes a fixed support member for fixedly supporting the connection conductor 7b. The fixed support member 12 has a substantially rectangular bar shape, and as shown in the side view of FIG.
In order to integrally fix the connection conductor 7b, a groove 12 is formed on the lower surface side.
a are formed and have a comb-shaped cross section. Groove 12a
Are formed in parallel at predetermined fixed intervals so as to be perpendicular to the longitudinal direction of the fixed support member 12. The fixed support member 12 is preferably formed of an insulating material such as a resin material and wood, but may be formed of a metal as long as insulation of the connection conductor 7b can be ensured. As shown in FIGS. 1 and 2, the fixed support member 12 has the connecting conductor 7b inserted into the groove 12a thereof, and then, as shown in the enlarged sectional view of FIG. It is fixed to the support member 11 by 14.

In order to stabilize the contact state between the connecting conductor 7b and the fixed support member 12 by fitting the groove 12a of the fixed support member 12 with the connection conductor 7b, FIG.
As shown in the figure, it is desirable that the connecting conductor 7b be formed to have a width substantially equal to the cross-sectional dimension of the connecting conductor 7b. Since there are many deviations, the groove 1 formed in the fixed support member 12 fixing the connection conductor 7b
The groove processing dimension 2a may be processed to be several millimeters to ten and several millimeters larger than the cross-sectional dimension of the connection conductor 7b (see FIG. 4).

As described above, in the present invention, the connecting conductors 7b are integrally fixed by using the fixed support members 12, so that the binding straps which have been fixed one by one as in the prior art are restrained. The working time can be reduced, and the efficiency in the manufacturing process can be improved. In addition, since they are fixed together, variations in support rigidity can be eliminated,
The connection conductor 7b can be fixed with uniform support rigidity,
Generation of wear powder due to vibration can be suppressed. Also,
In the case of the conventionally used strap 9, the support rigidity was sometimes reduced due to the long-term operation, but the support rigidity was reduced in the fixed support member 12 of the present invention even in the long-term operation. There is nothing to do.

Embodiment 2 FIG. FIG. 5 is a side view showing fixed support means of the connection conductor of the turbine generator according to Embodiment 2 of the present invention. FIG. 6 is a side view showing a fixed support state of the connection conductor by the fixed support means of FIG. In the second embodiment, the connection conductor 7b and the fixed support member 1
An elastic viscoelastic body 23 such as rubber is sandwiched between the two. That is, as shown in FIG. 5, the inner side wall 24 of the groove 12a of the fixed support member 12 is formed.
Is provided with a viscoelastic body 23. Therefore, the fixed support means in the present embodiment includes the fixed support member 12 and the viscoelastic body 23. As described above, at the time of the actual mounting work of the connection conductor 7b, the mounting position is often shifted by several millimeters to ten and several millimeters with respect to the drawing, and in consideration thereof, in this embodiment, The groove processing dimension of the groove 12a is set to be several millimeters to ten and several millimeters larger than the cross-sectional dimension of the connection conductor 7b, and the viscoelastic body 23 is provided so as to fill a gap generated thereby. Therefore, the thickness of the viscoelastic body 23 is about several millimeters to several tens of millimeters. The other structure is the same as that of the first embodiment, and the description is omitted here. Also in the present embodiment, similarly to the first embodiment, the fixed support member 12 includes the connecting conductor 7b in the groove 12a.
After being inserted, the portion indicated by the one-dot chain line A in FIG. 6 is fixed to the support member 11 by fixing means 14 (see FIG. 4) such as bolts or screws.

In the second embodiment, the same effects as in the first embodiment can be obtained, and further, the connection conductor 7b
The viscoelastic body 23 is sandwiched between the fixed support member 12 and the connecting conductor 7b.
The contact state with the material is further stabilized, and generation of abrasion powder during vibration can be further suppressed. Also, a viscoelastic body 23 such as rubber
Has a buffering function, so that there is an advantage that the vibration of the connection conductor 7b is not transmitted to the frame.

Embodiment 3 In the above-described embodiment, the grooves 12a are formed by the number of the connection conductors 7b. In this embodiment, however, as shown in FIGS. A fixed support member 14 having a mold cross section will be used. Groove 14 of fixed support member 14
The viscoelastic body 23 having a thickness of several millimeters to several tens of millimeters described in the second embodiment is provided on the inner side wall 14b of FIG.
The second viscoelastic body 33 is provided in the central portion of 4a at predetermined constant intervals according to the arrangement of the connection conductors 7b so as to fit with the connection conductors 7b. The width of the second viscoelastic body 33 is equal to the width B in FIG. 5 of the second embodiment, and is the same as the interval between the connection conductors 7b.
The fixed support means in the present embodiment includes a fixed support member 1
4, a viscoelastic body 23 and a second viscoelastic body 33. Other structures are the same as those in the first and second embodiments, and thus description thereof is omitted here.

In the third embodiment, the same effects as those of the above-described second embodiment can be obtained, and further, since the processing of the fixed support member 14 is simple, the manufacturing cost can be reduced. can get.

Embodiment 4 FIG. 9 is a side view showing fixed support means of the connection conductor of the turbine generator according to Embodiment 4 of the present invention. 10 and 11 are a side view and a perspective view showing a fixed support state of the connection conductor by the fixed support means of FIG. In the fourth embodiment, the support member 11 shown in the above embodiment is eliminated, and the ring diameter of the ring-shaped connection conductor 7b is reduced.
The connecting conductor 7b is formed so as to extend directly on the inner wall 2 of the frame. As shown in FIG. 9, the shape of the fixed support member 12 is exactly the same as that of the above-described first embodiment. After the connection conductor 7b is inserted into the groove 12a, the position of the dashed line A in FIG. It is fixed to the frame inner wall 2 by fixing means 14 such as bolts or screws (see FIG. 4). Other structures are the same as those in the first and second embodiments, and thus description thereof is omitted here.

In the conventional connection conductor supporting structure, FIG.
As shown in FIG. 1, since the connection conductor 7b was tied and fixed to the support member 11 by the binding string 9, the support member 11 was necessary. However, according to the fixed support member 12 of the present invention,
In particular, there is no need to provide the support member 11, and therefore, the connection conductor 7b can be provided directly on the frame inner wall 2.

In the fourth embodiment, the same effects as those of the first embodiment can be obtained, and since the support member 11 is eliminated, the manufacturing cost can be reduced by reducing the number of parts. The effect is obtained.

Embodiment 5 FIG. In the fifth embodiment,
As shown in FIGS. 12 and 13, as in Embodiment 4, the support member 11 is eliminated, and the ring diameter of the ring-shaped connection conductor 7 b is increased by the height of the support member 11. The connecting conductor 7b is formed so as to directly extend on the inner wall 2 of the frame, and the fixed supporting means 22 described in the second embodiment is used as a fixed supporting means for fixing the connecting conductor 7b.

In the fifth embodiment, the same effects as in the above-described second embodiment can be obtained. Further, as in the fourth embodiment, the support member 11 is eliminated, so that the manufacturing cost is reduced due to the reduction in the number of parts. The effect that reduction can be achieved is obtained.

Embodiment 6 FIG. In the sixth embodiment,
As shown in FIGS. 14 and 15, as in Embodiment 4, the support member 11 is eliminated, and the ring diameter of the ring-shaped connection conductor 7 b is increased by the height of the support member 11. The connecting conductor 7b is formed so as to directly extend on the inner wall 2 of the frame, and the fixed supporting means 32 shown in the third embodiment is used as the fixing supporting means for fixing the connecting conductor 7b.

In the sixth embodiment, the same effects as those of the third embodiment are obtained, and further, the same effects as those of the fourth embodiment are obtained.

Embodiment 7 In the seventh embodiment,
As shown in FIG. 16, similarly to the fourth embodiment, the connection conductor 7 b is provided directly along the inner wall 2 of the frame without the support member 11, and the connection conductor 7 b is sealed using a curable resin 15. And a support structure that is fixed directly to the inner wall 2 of the frame.

In the seventh embodiment, since the connection conductor 7b is sealed with the resin 15, the connection conductor 7b is sealed.
Since the rigidity of the structure increases extremely from a to the connection conductor 7b, propagation of vibration can be greatly reduced.

Embodiment 8 FIG. FIG. 17 is a perspective view showing a fixedly supported state of the connection conductor of the turbine generator according to Embodiment 8 of the present invention. In the eighth embodiment, as shown in FIG. 17, a grooved rubber plate 16 is spread over the inner wall 2 of the frame, and the connection conductor 7b is fitted into the groove of the rubber plate 16 and fixed. .

In the eighth embodiment, since the grooved rubber plate 16 is spread between the connection conductor 7b and the inner wall 2 of the frame, the rubber plate 16 becomes a cushioning material and the coil end 5
The vibration generated in the connection conductor 7b can be prevented from transmitting to the frame, the generation of abrasion powder and the decrease in the support rigidity of the fixed support means can be suppressed, and the rubber plate can be integrally formed. Since the support is provided at 16, the dispersion of the support rigidity can be eliminated, and the effect that the production efficiency can be greatly improved as compared with the conventional work in which each place is tied up with a binding string. can get.

[0033]

Since the present invention is configured as described above, it has the following effects.

According to a first aspect of the present invention, there is provided a frame, a stator core provided in the frame, a coil end provided in the stator core, a lead conductor for extracting electricity from the coil end, and a coil end. A plurality of connection conductors that are electrically connected to the lead-out conductors and are provided in parallel with each other along the inner wall of the frame, and fixed support means for integrally fixing and supporting the connection conductors; Since the connecting conductors are integrally fixed by using the support means, variations in the supporting rigidity can be eliminated, the connecting conductors can be fixed with uniform supporting rigidity, and generation of wear powder due to vibration can be suppressed. . In addition, since the connecting conductors are fixed integrally using the fixed support means, it is possible to reduce the time required for tying the straps in comparison with the conventional case where the straps are fixed with the straps one by one. Thus, the efficiency of the manufacturing process can be improved. In addition, in the case of the conventionally used binding string, the support rigidity was sometimes reduced due to the long-term operation, and the support rigidity of the fixed support means of the present invention was reduced even in the long-term operation. There is nothing to do.

According to the second aspect of the present invention, the fixed support means has a groove, and the connecting conductor is fitted in the groove to fix and support the connecting conductor. Variations can be eliminated, the connection conductor can be fixed with uniform support rigidity, and generation of wear powder due to vibration can be suppressed.

According to a third aspect of the present invention, the fixed support means has a viscoelastic member provided in the groove, and the viscoelastic member is sandwiched between the connection conductor and the fixed support means. The contact state between the conductor and the fixed supporting means is further stabilized, and the generation of abrasion powder during vibration can be further suppressed.
Further, since the viscoelastic member has a cushioning function, there is obtained an advantage that the vibration of the connection conductor is not transmitted to the frame.

According to the fourth aspect of the present invention, since the fixed support means is made of a viscoelastic body, the fixed support means serves as a cushioning material, and the vibration generated at the coil end and transmitted to the connection conductor is transmitted to the frame. Can be cut off, and the generation of abrasion powder and a decrease in the support rigidity of the fixed support means can be suppressed. In addition, since the support is integrally supported by the fixed support means made of a viscoelastic body, the support rigidity is reduced. Variations can be eliminated, and the effect of significantly improving manufacturing efficiency can be obtained as compared with the conventional work in which a strap is used to tie each place.

According to the fifth aspect of the present invention, since the fixed support means is made of a curable resin and the connection conductor is integrally sealed, the rigidity of the connection conductor portion as a structure can be extremely increased. Therefore, propagation of vibration can be greatly reduced, and generation of abrasion powder and a decrease in support rigidity of the fixed support means can be suppressed.

[Brief description of the drawings]

FIG. 1 is a partial side view showing a configuration of a turbine generator according to Embodiment 1 of the present invention.

FIG. 2 is a partial perspective view showing a fixedly supported state of stator coil end connection conductors of the turbine generator according to Embodiment 1 of the present invention.

FIG. 3 is a side view showing the fixed support means according to the first embodiment of the present invention.

FIG. 4 is a partially enlarged cross-sectional view showing a fixed support unit according to the first embodiment of the present invention.

FIG. 5 is a side view showing a fixed support means according to Embodiment 2 of the present invention.

FIG. 6 is a partial side view showing a fixedly supported state of a connection conductor according to a second embodiment of the present invention.

FIG. 7 is a side view showing a fixed support means according to Embodiment 3 of the present invention.

FIG. 8 is a partial side view showing a fixed support state of a connection conductor according to a third embodiment of the present invention.

FIG. 9 is a side view showing fixed support means according to Embodiment 4 of the present invention.

FIG. 10 is a partial side view showing a fixedly supported state of a connection conductor according to a fourth embodiment of the present invention.

FIG. 11 is a partial perspective view showing a fixedly supported state of a connection conductor of a turbine generator according to Embodiment 4 of the present invention.

FIG. 12 is a side view showing fixed support means according to Embodiment 5 of the present invention.

FIG. 13 is a partial side view showing a fixedly supported state of a connection conductor according to a fifth embodiment of the present invention.

FIG. 14 is a side view showing fixed support means according to Embodiment 6 of the present invention.

FIG. 15 is a partial side view showing a fixedly supported state of a connection conductor according to a sixth embodiment of the present invention.

FIG. 16 is a partial perspective view showing a fixedly supported state of a connection conductor of a turbine generator according to Embodiment 7 of the present invention.

FIG. 17 is a partial perspective view showing a fixedly supported state of a connection conductor of a turbine generator according to an eighth embodiment of the present invention.

FIG. 18 is a partial side view showing a configuration of a conventional turbine generator.

FIG. 19 is a connection diagram of stator coil end connection conductors of a conventional turbine generator.

FIG. 20 is a partial perspective view showing a fixedly supported state of a connection conductor of a conventional turbine generator.

FIG. 21 is a partially enlarged perspective view showing a fixed support state of a connecting conductor of a conventional turbine generator by a binding string.

FIG. 22 is a measurement result of a supporting rigidity of a connecting conductor of a conventional turbine generator using a binding string.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 stator core, 2 frame inner wall, 3 upper stator coil, 4 lower stator coil, 5 coil end, 7a connection conductor, 7b connection conductor, 9 binding string, 11 support member, 1
2 fixed support member, 15 resin, 16 rubber plate, 22
Fixed support means, 23 viscoelastic body, 32 fixed support means,
33 Second viscoelastic body.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Chiharu Kawase 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Inside Mitsubishi Electric Co., Ltd. (72) Michio Fujimoto 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation F-term (reference) 5H604 AA05 BB03 BB14 CC01 CC05 CC13 DB16 QA01 QA04 QB16

Claims (5)

[Claims] A frame; a stator core provided in the frame; a coil end provided in the stator core; a lead conductor for extracting electricity from the coil end; A plurality of connection conductors that are electrically connected to the lead-out conductor and are provided in parallel with each other along the inner wall of the frame; and fixed support means for integrally fixing and supporting the connection conductor. A turbine generator. 2. The turbine generator according to claim 1, wherein the fixed support means has a groove, and the connection conductor is fitted in the groove to fix and support the connection conductor. 3. The turbine generator according to claim 2, wherein said fixed support means includes a viscoelastic member provided in said groove. 4. The turbine generator according to claim 1, wherein said fixed support means is made of a viscoelastic body. 5. The turbine generator according to claim 1, wherein said fixed support means is made of a curable resin, and fixedly supports said connection conductor by integrally sealing.