JP2013130062A - Hydraulic power generating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively store water in buckets and expand flexibility in selecting an installation site.SOLUTION: A hydraulic power generating device 1 includes: a conveyor 7 stretched in a loop to circularly move in vertical direction via rotary shafts 3, 4, 5, 6; a plurality of buckets 9 installed at a predetermined pitch P along a peripheral direction of the conveyor 7 and supported to rotate relative to the conveyor 7 through supporting shafts 8 in parallel with the rotary shafts so that they are balanced with openings 9a facing upward; a water supply section 10 which supplies water W to the openings 9a of the buckets 9 having reached the top part of the conveyor 7; a water takeout section 11 which takes out water W from the openings 9a by rotating the buckets 9 having reached the bottom part of the conveyor 7 through the supporting shafts 8, and a power generator 12 connected to the rotary shaft 4.

Description

  The present invention relates to a hydroelectric power generation apparatus that generates electric power using the potential energy of water at a high place.

  As a conventional hydroelectric generator of this type, a power generator using a falling water flow described in Patent Document 1 is exemplified. As shown in FIG. 11, the power generator stands up in an up-down direction in which an inlet 112 for introducing a falling water flow is opened at the upper end and a discharge port 114 for discharging the falling water flow is opened at a lower end to allow the falling water flow to pass therethrough. A cylindrical frame 110, a conveyor 120 stretched in a loop so as to be able to circulate in the vertical direction inside the cylindrical frame 110 via rotation shafts 124 and 126, and a predetermined length along the longitudinal direction outside the circulating portion of the conveyor 120 A plurality of buckets 130 in which a falling water flow arranged side by side at a pitch is introduced, and the direction from the bottom portion of the bucket 130 toward the opening portion 132 of the bucket 130 is opposite to the direction in which the circulating portion 122 of the conveyor 120 is circulated. A plurality of buckets 130 facing the conveyor and a rotating shaft 124 that supports the conveyor 120 that rotates as the circuit 122 of the conveyor 120 rotates. Machine 140 and is provided. A plurality of buckets 130 whose openings 132 arranged on the outer side of the circulating part 122 on one side of the conveyor 120 face upward are arranged along a passage through which a falling water flow flowing into the cylinder frame 110 from the introduction port 112 passes. ing.

  As a device having the same basic configuration as the hydroelectric generator of Patent Document 1, there is also a power generator described in Patent Document 2.

Japanese Patent No. 3891445 JP-A-2005-214151

  However, the conventional power generator is fixed so that the direction from the bottom of the bucket 130 toward the opening 132 of the bucket 130 is opposite to the direction in which the circulating section 122 of the conveyor 120 is rotated. There are challenges.

(1) The time when water can be supplied to the bucket 130 is limited to the state where the opening 132 is directed upward as the bucket 130 starts to descend, and when that happens, water can be supplied in a short time. Thus, it is necessary to pour water into the bucket 130 vigorously. For this reason, water hits the bucket 130 vigorously and is likely to be scattered, and it is difficult for the bucket 130 to be effectively stored in water.

(2) In order to prevent water from overflowing from the bucket 130 in the descending path, it is necessary to make the descending path vertical, and the place where it can be installed is limited. For example, it cannot be installed along an inclined ground (particularly when the inclination angle of the descending path is not constant over the entire path).

In order to solve the above-mentioned problem, a hydroelectric generator of the first invention is
A conveyor stretched in a loop that can circulate in the vertical direction via a plurality of rotating shafts;
It is arranged at a predetermined pitch along the circumferential direction of the conveyor, and can rotate relative to the conveyor via a support shaft parallel to the rotation axis so that each of the openings is balanced upward. A plurality of supported buckets;
A water supply for supplying water to the opening of the bucket that has arrived at the top of the conveyor;
A water take-out part for taking out water from the opening by rotating the bucket that has arrived at the lower part of the conveyor via the support shaft;
A generator connected to any one of the rotating shafts.

  Here, although not particularly limited, it is exemplified that a weight is provided on the side opposite to the opening of the bucket so that the opening faces upward and is stably balanced.

According to this structure, since the said bucket is comprised so that the said opening part may be faced upwards, the following effect is obtained.
(1) Since the water can be poured into the bucket at any time except when it is rotated by the water extraction portion, it is possible to pour water into the bucket over a longer time than before. Water can be effectively stored inside.
(2) Since the descending path of the conveyor does not need to be vertical and may be inclined, the degree of freedom in selecting the installation location is great.

As the hydroelectric generator of the second invention, in the first invention,
The said bucket illustrates the aspect formed so that accommodation was possible in the column shape which makes the said spindle a shaft center and has the diameter below the said pitch.

  According to this configuration, the adjacent buckets can be configured to be rotatable around the support shaft without interfering with each other in a state in which the adjacent buckets are arranged in a linear route in the circulation route.

As the hydroelectric generator of the third invention, in the second invention,
The bucket is formed in a semi-cylindrical shape obtained by dividing the cylindrical shape into two on its axis.
The said opening part illustrates the aspect formed so that substantially the whole of the 2 division | segmentation surface in this semi-cylindrical shape might be opened.

  According to this structure, the said opening part can be formed large and it can make it easy to take in and out water with respect to the said bucket.

As the hydroelectric generator of the fourth invention, in the third invention,
The conveyor includes an upper horizontal path that allows two or more of the buckets to be horizontally aligned at the top of the circuit path;
The said water supply part illustrates the aspect comprised so that water might be supplied with respect to the said bucket in the said upper horizontal path | route.

  According to this structure, the state which can supply water with respect to each said bucket can be extended rather than before by providing the said top horizontal path | route.

As the hydroelectric generator of the fifth invention, in the fourth invention,
The aspect provided with the rotation prevention part comprised so that rotation about the said spindle might be prevented with respect to the said bucket in the said upper horizontal path | route.

  According to this configuration, when the water supplied from the water supply unit is poured into the bucket in the upper horizontal path, the bucket can be prevented from rotating and overflowing.

As the hydroelectric generator of the sixth invention, in the fourth or fifth invention,
The said water supply part illustrates the aspect comprised so that water might be supplied also to the said bucket descend | falling prior to the said bucket in the said upper horizontal path | route.

  According to this structure, water can be additionally supplied to the bucket that descends in advance.

As the hydroelectric generator of the seventh invention, in any one of the fourth to sixth inventions,
The aspect provided with the guide part provided below the said upper horizontal path | route and guiding so that the water which falls from the clearance gap between the said buckets in this upper horizontal path | route may be poured in the said descent | falling bucket is illustrated.

  According to this configuration, water falling from the gap between the buckets in the upper horizontal path can be effectively used.

As the hydroelectric generator of the eighth invention, in any one of the first to seventh inventions,
The aspect with which the said water extraction part was provided with the shake prevention part which prevents the shake movement when the said bucket returns from the said rotation attitude | position at the time of taking out water to the attitude | position which balanced the said opening part upwards Is illustrated.

  According to this structure, the loss of energy in the conveyor due to the swinging motion can be suppressed.

  According to the hydroelectric generator according to the present invention, the water can be effectively stored in the bucket, and the excellent effect that the degree of freedom of selection of the installation location is great is achieved.

1 is a side view showing an overall configuration of a hydroelectric generator according to a first embodiment embodying the present invention. It is a front view which shows the whole structure of the hydraulic power unit. It is a perspective view of the bucket of the hydraulic power unit. It is an enlarged side view of the upper part of the hydroelectric generator. It is an enlarged side view of the lower part of the hydroelectric generator. FIG. 6 is a view taken along arrow VI in FIG. 5 and shows a state of the bucket represented by a solid line in FIG. It is a VII arrow line view of FIG. 5, and is a figure which shows the state of the bucket represented by the dashed-two dotted line in the same figure. It is a figure explaining the movement locus of the bucket in the lower part of the hydroelectric generator. It is a side view which shows the whole structure of the hydraulic power unit which concerns on 2nd embodiment which actualized this invention. It is a perspective view of the bucket of the hydraulic power unit. It is a side view which shows the whole structure of the conventional hydraulic power unit.

  FIGS. 1-8 has shown the hydroelectric generator 1 of 1st embodiment which actualized this invention, and the left side in FIG. 1 is a front. As shown in FIGS. 1 and 2, the hydroelectric generator 1 includes a cylindrical tube frame 2 extending in the vertical direction. The tube frame 2 includes four rotating shafts 3, 4, 5, and 5. And a conveyor 7 stretched in a loop shape that can be circulated in the vertical direction via 6 and arranged at a predetermined pitch P along the circumferential direction of the conveyor 7, each facing the opening 9 a upward. A plurality of buckets 9 supported so as to be relatively rotatable with respect to the conveyor 7 via support shafts 8 parallel to the rotation shafts 3, 4, 5, and 6, and buckets that have arrived at the upper end of the conveyor 7. The water supply unit 10 that supplies the water W to the opening 9a of 9 and the bucket 9 that has arrived at the lower end of the conveyor 7 are rotated through the support shaft 8 to take out the water W from the opening 9a. An extraction unit 11 and a generator 12 connected to the rotating shaft 4 are provided.

  The cylindrical frame 2 is provided with a water supply unit 10 at the upper end, a water extraction unit 11 at the lower end, and accommodates a conveyor 7 and a plurality of buckets 9 inside.

  The conveyor 7 is rotatably disposed at the upper part of the cylindrical frame 2 via a bearing 20 and a pair of front and rear upper rotary shafts 3 and 4 and at the lower part of the cylindrical frame 2 via a bearing 20. A pair of front and rear lower rotary shafts 5 and 6, sprockets 21 fixed to the left and right of the respective rotary shafts, and a pair of left and right chains 22 as endless bodies wound around the left and right sprockets 21. ing. In this way, the circulation path 23 of the conveyor 7 of this example is formed in a rectangular shape that is long in the vertical direction, and the upper horizontal path 23a and the lower horizontal path 23b that extend horizontally in the vertical direction, and the upward path that extends vertically in the front and rear directions, respectively. 23c and descending path 23d. In the upper horizontal path 23a and the lower horizontal path 23b, a maximum of three buckets 9 can be arranged horizontally. In this example, the rotary shafts 5 and 6 are supported by the bearing 20 via the elongated holes 2a provided on the left and right side walls of the cylindrical frame 2 and extending vertically, and the bearing 20 is urged downward. Thus, the tension of the chain 22 is maintained. As an urging means for the bearing 20, a known means can be adopted as appropriate, for example, a means for urging by the weight 34 can be mentioned.

  Above the upper horizontal path 23a, a rotation preventing unit 32 configured to prevent the bucket 9 in the path from rotating about the support shaft 8 is provided. The rotation prevention part 32 of this example is formed in a pair of left and right bars extending horizontally in the front-rear direction, and is provided on the cylindrical frame 2 with a predetermined gap above each of the left and right ends of the bucket 9 in the upper horizontal path 23a. It is erected. The rotation preventing unit 32 is configured to be able to adjust the mounting position with respect to the cylindrical frame 2 in the vertical direction, and the predetermined gap can be adjusted as appropriate. Although it does not specifically limit as said predetermined clearance gap, Setting to about 20 mm is illustrated.

  A plate-shaped guide portion 24 is provided below the upper horizontal path 23a. The guide portion 24 is attached so as to be inclined so that the descending path 23d side is lowered with respect to the horizontal, and the water W overflows from the bucket 9 or falls from a gap between the buckets 9 in the upper horizontal path 23a. In addition to guiding them so as to flow into the bucket 9 that descends prior to these buckets 9, it is possible to prevent the bucket 9 from descending into the bucket of the ascending path 23 c. Although it does not specifically limit as an inclination angle of the guide part 24 with respect to horizontal, Setting to set in the range of 5-15 degrees is illustrated.

  As shown in FIG. 3, the bucket 9 is formed into a hollow semi-cylindrical shape in which a hollow cylindrical shape having a spindle 8 as an axis and a pitch P as a diameter is divided into two on the axis. The opening 9a is formed such that substantially the entire two-divided surface of the hollow semi-cylindrical shape is opened. The support shafts 8 on both the left and right side surfaces of the bucket 9 are rotatably supported by a pair of left and right chains 22 in the conveyor 7 via bearings (not shown). Since the bucket 9 is formed in a circular arc shape whose inside is centered on the support shaft, the support shaft 8 is taken out when the water W is taken out even when solid matter such as rocks, stones, sand, and mud enters the inside. When the roll is turned around, the solids can be smoothly discharged together with the water W. Roller shafts 25 project from the lower ends of the left and right side surfaces of the bucket 9 in the left-right direction, and a roller 26 is supported on the roller shaft 25 so as to be rotatable. Although not particularly limited, a weight may be provided on the inner bottom of the bucket 9 (on the side opposite to the opening of the bucket) so that the bucket 9 stably balances the opening 9a upward about the support shaft 8. preferable.

  1, 2 and 4, the water supply unit 10 is formed in a funnel shape in which the outlet side opening 10b at the lower end is relatively smaller than the inlet side opening 10a at the upper end. The water W flows smoothly into the frame 2 inside. In this example, it is formed in a rectangular shape extending in the front-rear direction in plan view. The width in the left-right direction of the outlet side opening 10b of this example is formed to be narrower than the width in the left-right direction of the bucket 9 and is ½ or less of the width in the left-right direction of the bucket 9. The width in the front-rear direction of the outlet-side opening 10 b of this example is wider than the width in the front-rear direction of the bucket 9 and is formed about 2.5 times the width in the front-rear direction of the bucket 9. In the front view, the water supply unit 10 is configured to pour water W into the center of the bucket 9 in the left-right direction. Further, in the side view, the water supply unit 10 is configured to supply water W to the buckets 9 in the upper horizontal path 23 a and the buckets 9 that descend before the buckets 9. In addition, an overflow pipe 10 c that discharges excess water W to the outside and prevents the water W from overflowing from the water supply unit 10 is provided at the upper part of the side surface of the water supply unit 10. In this example, the water W poured from the outside into the water supply unit 10 is obtained by removing the solid matter by the strainer 31 in advance.

  As shown in FIGS. 5 to 7, the water extraction portion 11 includes a pair of left and right rollover contact portions 28 and a pair of left and right shake prevention portions 33, which are supported by the cylindrical frame 2.

  As shown in FIGS. 5 and 6, the rollover contact portion 28 is formed in the shape of a bar that protrudes upward from the lower side of the conveyor 7 by inclining in the circulating direction of the conveyor 7. It is attached to the cylinder frame 2 so that the sheath inclination angle can be adjusted. As shown in FIG. 8, the left and right rollers 26 of the bucket 9 arriving at the center of the lower horizontal path 23 b of the conveyor 7 ride on the left and right roll-over contact portions 28, and the rollers 26 roll over according to the circulation of the conveyor 7. , The bottom of the bucket 9 is pushed up via the roller 26, the bucket 9 rolls over, and the water W in the bucket 9 is discharged from the opening 9a. Yes. After that, the left and right rollers 26 of the bucket 9 are detached from the tips of the left and right roll-over contact portions 28, respectively, so that the bucket 9 returns to a balanced state with the opening 9a facing upward.

  The shake preventing portion 33 is formed in a bar shape protruding upward from the lower side of the conveyor 7 in front of the rollover contact portion 28, and the upward protruding length is attached to the cylinder frame 2 so as to be adjustable. Yes. As shown in FIGS. 5 and 7, the left and right shake preventing portions 33 are used when the bucket 9 returns from the rotated posture at the time of taking out the water to a balanced posture with the opening 9 a upward. By contacting the left and right rollers 26 of the bucket 9, the bucket 9 is stopped in a balanced posture and the swing movement of the bucket 9 is prevented. A resin piece as a buffer means is attached to a portion 33a of the shake preventing portion 33 where the roller 26 comes into contact so as to buffer an impact at the time of contact and reduce noise.

  The generator 12 is connected to the upper rotating shaft 4 in this example. The generator 12 and the upper rotating shaft 4 are connected to the drive shaft 12a of the generator 12 via a chain 29, a sprocket 30 and a speed increaser (not shown). As a result, the generator 12 is rotated at a high speed by receiving the rotational force of the upper rotary shaft 4 rotating along with the circulation of the conveyor 7 to generate electric power.

According to the hydroelectric generator 1 of the present example configured as described above, the bucket 9 is configured to balance the opening 9a upward, so that the following operational effects are obtained.
(1) Since the water W can be poured into the bucket 9 at any time except when it is rotated by the water extraction portion 11, the water W can be poured into the bucket 9 over a longer time than before. Water W can be effectively stored in the bucket 9.
(2) Since the descending path 23d of the conveyor 7 does not have to be vertical and may be inclined, the degree of freedom in selecting the installation location is great.

  Further, since the bucket 9 is formed so as to be accommodated in a cylindrical shape having the support shaft 8 as an axis and having a pitch P as a diameter, adjacent buckets 9 are arranged in a linear route in the circulation route 23. In this state, it can be configured to be rotatable around the support shaft 8 without interfering with each other.

  Further, the bucket 9 is formed in a semi-cylindrical shape obtained by dividing the cylindrical shape into two on its axis, and the opening 9a is formed so that substantially the entire two-divided surface of the semi-cylindrical shape is opened. Therefore, the opening 9 a can be formed large, and the water W can be easily taken in and out of the bucket 9.

  Further, the conveyor 7 includes an upper horizontal path 23a in which two or more buckets 9 can be horizontally arranged in the upper part of the circulation path, and the water supply unit 10 supplies water to the bucket 9 in the upper horizontal path 23a. It is comprised so that W may be supplied. According to this structure, the state which can supply the water W with respect to each bucket 9 can be extended rather than before by providing the upper horizontal path | route 23a.

  In addition, since the bucket 9 in the upper horizontal path 23a is provided with a rotation prevention unit configured to prevent rotation about the support shaft 8, the water W supplied from the water supply unit 10 is supplied. When poured into the bucket 9 in the upper horizontal path 23a, the bucket 9 can be prevented from rotating and overflowing the water W.

  Further, the water supply unit 10 is configured to supply water W also to the bucket 9 that descends in advance of the bucket 9 in the upper horizontal path 23a, and is added to the bucket 9 that descends in advance. Water W can be supplied.

  In addition, a guide portion is provided below the upper horizontal path 23a and guides the water W falling from the gap between the buckets 9 in the upper horizontal path 23a so as to flow into the bucket 9 that descends in advance. Water can be used effectively.

  Moreover, the water extraction part 11 is provided with the shake prevention part which prevents the swing movement when the bucket 9 returns from the rotated attitude | position at the time of taking out water to the attitude | position which balanced the opening part 9a upwards. Therefore, energy loss in the conveyor 7 due to the swinging motion can be suppressed.

  Next, FIGS. 9-10 has shown 2nd embodiment which actualized this invention. This hydroelectric generator 1 is mainly different from the first embodiment in the following points. Accordingly, portions common to the embodiment are given the same reference numerals, and redundant description is omitted.

  As shown in FIG. 10, the bucket 9 of this example extends upward at the opening edge of the two-divided surface in the hollow semi-cylindrical shape obtained by dividing the hollow cylindrical shape having a diameter smaller than the pitch P into two on the axis. It is formed in the shape formed. For this reason, as shown in FIG. 9, a gap is formed between two or more buckets 9 arranged in the upper horizontal path 23 a, but the water W that has fallen from the gap precedes these buckets 9 by the guide portion 24. Then, it is poured into the bucket 9 that descends.

  Also with the hydroelectric generator 1 of this example, the same effect as 1st embodiment can be acquired.

In addition, this invention is not limited to the said embodiment, For example, it can also be suitably changed and embodied as follows, for example in the range which does not deviate from the meaning of invention.
(1) Change the shape of the bucket 9 as appropriate.
(2) Change the circulation route of the conveyor 7 as appropriate. For example, the descending path 23d is inclined.
(3) Increase or decrease the number of rotation axes of the conveyor 7.

DESCRIPTION OF SYMBOLS 1 Hydroelectric generator 2 Cylinder frame 3 Upper rotating shaft 4 Upper rotating shaft 5 Lower rotating shaft 6 Lower rotating shaft 7 Conveyor 8 Support shaft 9 Bucket 9a Opening part 10 Water supply part 10a Inlet side opening 10b Outlet side opening 10c Overflow pipe 11 Water Unloading section 12 Generator 12a Drive shaft 20 Bearing 21 Sprocket 22 Chain 23 Circulating path 23a Upper horizontal path 23b Lower horizontal path 23c Ascending path 23d Lowering path 24 Guide section 25 Roller shaft 26 Roller 28 Rolling contact section 29 Chain 30 Sprocket 31 Strainer 32 Anti-rotation part 33 Anti-sway part 34 Weight P Predetermined pitch W Water

Claims (8)

A conveyor stretched in a loop that can circulate in the vertical direction via a plurality of rotating shafts;
It is arranged at a predetermined pitch along the circumferential direction of the conveyor, and can rotate relative to the conveyor via a support shaft parallel to the rotation axis so that each of the openings is balanced upward. A plurality of supported buckets;
A water supply for supplying water to the opening of the bucket that has arrived at the top of the conveyor;
A water take-out part for taking out water from the opening by rotating the bucket that has arrived at the lower part of the conveyor via the support shaft;
A hydroelectric generator comprising a generator coupled to any one of the rotating shafts.   The hydroelectric generator according to claim 1, wherein the bucket is formed so as to be able to be accommodated in a columnar shape having the support shaft as an axis and having a diameter equal to or smaller than the pitch. The bucket is formed in a semi-cylindrical shape obtained by dividing the cylindrical shape into two on its axis.
The hydroelectric generator according to claim 2, wherein the opening is formed so that substantially the entire two-divided surface in the semi-cylindrical shape is opened. The conveyor includes an upper horizontal path that allows two or more of the buckets to be horizontally aligned at the top of the circuit path;
The hydroelectric generator according to claim 3, wherein the water supply unit is configured to supply water to the bucket in the upper horizontal path.   The hydroelectric generator according to claim 4, further comprising a rotation prevention unit configured to prevent rotation about the support shaft with respect to the bucket in the upper horizontal path.   The hydroelectric generator according to claim 4 or 5, wherein the water supply unit is configured to supply water also to the bucket that descends prior to the bucket in the upper horizontal path.   The guide part provided under the said upper horizontal path | route, and the guide part which guides so that the water which falls from the clearance gap between the said buckets in this upper horizontal path | route may be poured into the said bucket to descend | fall. The hydroelectric power generator described in 1.   The said water extraction part is provided with the shake prevention part which prevents a shake | fluctuation movement when the said bucket returns from the said rotation attitude | position at the time of taking out water to the attitude | position which balanced the said opening part upwards. Item 8. The hydroelectric generator according to any one of Items 1 to 7.

Images