JP5475182B1 - Weir type power generator - Google Patents

Abstract

A dam-type power generation device including a fixing portion that fixes a stake on a weir without driving a pile or the like is provided.
A dam-type power generation device (1) according to the present invention is made of reinforced concrete that is lower than a levee (52), is distributed in the width of a river (50), upstream and downstream of the dam, and blocks river water. Main body part (2) and a fixed part (3) which is formed integrally with the main body part and fixes the main body part to the weir, and the fixed part extends laterally from the main body part and is embedded in the dike (4) and a side wall (5) that covers the embankment to a position higher than the water level when the water is full, and the main body is inclined to drop the water beyond the main body in the river water stored by damming A portion (6), a guide portion (7) that is at a predetermined height position of the main body portion and guides the river water to be narrowed, and a water passage (8) that communicates with the guide portion and drops water downstream. A turbine (9, 10) provided at a position below the inclined portion and the water passage, and a power generation motor connected to the turbine 10, 11) and a.
[Selection] Figure 1

Description

  The present invention relates to a small-scale dam-type power generator installed and used in a river weir.

  As this type of power generation device, it is considered to install a dam-type power generation device using a concrete weir with a small drop (for example, 1 m to 2 m) provided in a river having a width of, for example, about 10 m to 30 m. It is done. In this case, there is a problem that it is difficult to drive a pile or the like necessary for installation into the river bed because a large stone or bedrock interferes. In order to solve this problem, it is necessary to use a large heavy machine such as a rock drill similar to that used in dam construction work relatively larger than the dam.

  As the above-mentioned dam-type power generator, a river that has reinforced concrete for anchors that is the same height as a person's height, and that has a dam that is as tall as a person's height, and that flows over this dam The thing of the structure which rotates the water turbine for river installation with this water is known (for example, refer FIG. 5 of patent document 1).

JP 2009-24543 A

  However, the reinforced concrete for anchors, which has a structure as shown in Patent Document 1 and is prevented from being swept away by the momentum of river water, is used to increase the height of the dam-type power generation device. Greatly hinders. Moreover, if reinforced concrete is to be buried underground, a large heavy machine such as a rock drill as described above is required.

  The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a dam-type power generation device that is fixed so as not to be washed away by the force of the river without driving a pile or the like into the riverbed. .

  In order to achieve the above object, the present invention is a dam-type power generation device that is installed on a river weir having dikes on both banks and generates power using the water flow of the river, and is lower than the dike. A main body of a dam type having the same width as a river and distributed in a predetermined length between the upstream side and the downstream side across the position where the river water falls, and made of reinforced concrete that blocks the river water, and the main body And a fixing portion that is fixed to the weir so that the main body portion is not swept away by the force received from the river water that has been dammed, and the fixing portion extends laterally from the main body portion. From the position of the riverbank from the both ends of the main body so as to cover the dike from the position of the projecting portion embedded in the bank and the bottom of the river to a position higher than the full water level determined by the top and bottom height of the main body Side provided toward the upstream side along the side And the main body part is located at a predetermined height position of the main body part, and an inclined part for dropping the water exceeding the main body part to the downstream side in the river water that has been dammed and stored. A guide part for guiding the dammed river water to narrow down, a water passage communicating with the guide part for dropping water downstream, and a position below the inclined part and the water passage, respectively It is provided with the water turbine provided so that it might be rotated with the water dropped by these, and the motor for electric power generation connected with the said water wheel, respectively, It is characterized by the above-mentioned.

  The water wheel provided in the water passage has a plurality of wings formed of leaf springs curved in a bowl shape, and the wings are curved with reduced deflection when subjected to a water flow on a concave surface. The rate decreases, the radial width with respect to the rotation axis widens, and when the water flow is not received on the surface, the deflection increases, the curvature increases, and the radial width decreases, thereby increasing the convex shape. It is preferable to reduce the force from the water flow received on the back surface.

  According to the dam-type power generation device of the present invention, the protruding portion provided in the fixed portion fixed to the dam so that the main body portion is not swept away is embedded in the dike at both ends of the river, There are no large stones on the bottom of the river, and installation work is easier compared to the work of driving a pile on the bottom of the river. Further, the side wall connected to the main body of the power generation device by a reinforcing bar is fixed at the installation position so that the power generation device is not swept away by the force received from the water flowing through the river due to friction with the embankment. By providing the side wall, the dam type power generation device can be fixed at the installation position without hitting a pile on the weir or the riverbed.

1 is a cross-sectional view of a dam type power generator according to a first embodiment of the present invention. The top view of the power generator. The perspective view showing a mode that the same electric power generating apparatus was seen from the downstream. The perspective view which looked at the power generation device from diagonally upward. Sectional drawing which shows the side wall connected with the main body of the power generator by the reinforcing bar. FIG. 5 is an enlarged view of a portion surrounded by a dotted line in FIG. 4. The top view of the water wheel which the power generator has. Sectional drawing of the water wheel which the same electric power generating apparatus has. The sectional side view which shows the structure of the water turbine for a power generation provided in the water channel provided in the inside of the power generator. Sectional drawing of the dam type electric power generating apparatus which concerns on the 2nd Embodiment of this invention. The top view of the power generator. The perspective view showing a mode that the same electric power generating apparatus was seen from the downstream. The perspective view which looked at the power generation device from diagonally upward. Sectional drawing which shows the side wall connected with the main body of the power generator by the reinforcing bar. The perspective view which shows the structure of the water turbine for an electric power generation provided in the water channel provided in the inside of the electric power generating apparatus. Sectional drawing which shows the structure of the same electric power generating apparatus.

  The power generation device of the present invention is a dam type power generation device installed on a weir provided in a river having a width of, for example, about 10 to 30 m. Is connected to both ends of the power generator main body by a reinforcing bar, and extends to a position higher than the upper limit position of water blocked by the dam-type power generator. The side wall provided in the range of about 100m-1km to the upstream is provided so that a dike may be covered. The side wall fixes the power generation device at the installation position so that the power generation device is not swept away by the force received from the water flowing through the river due to friction between the side walls and the like. Since the power generation device is provided with the protrusion and the side wall, the power of the water flow can be obtained without hitting a pile on a weir previously provided in the river, and without hitting a pile on the riverbed with a large rock or bedrock. It is firmly fixed on the weir so that it will not be swept away by.

(First embodiment)
1 to 9, the dam-type power generation device 1 according to the first embodiment is installed on a dam 51 provided on the bottom of a river 50. FIG. 1 shows a cross-sectional view taken along line AA shown in FIG. The river 50 is provided with dikes 52 on both banks, and the dike 52 is provided with a side wall made of concrete (the surface is indicated by cross-hatching) 53 having a height of, for example, about 1 to 2 m from the river bottom. By installing the dam type power generation device 1 on the weir 51, the river flow is blocked and the upstream water level rises. Therefore, the power generation device 1 is embanked from both ends of the main body 2 to the upstream side along the riverbank dike from the position of the river bottom to a position higher than the water level H1 at the time of full water determined by the top and bottom height of the main body 2. The side wall 5 which covers the surface of 52 and the side wall 53 is provided.

  The dam-type power generation device 1 is lower than the levee 52, has the same width as the river 50, and is distributed a predetermined length upstream and downstream with respect to the river water drop position of the dam 51. The main body 2 made of reinforced concrete for damming and the main body 2 and the reinforcing bar (including a case where a steel frame or the like is used at the same time as the reinforcing bar or in place of the reinforcing bar) are integrally formed, A fixing portion 3 (shown in FIGS. 2 to 4) that fixes the main body portion 2 to the weir 51 is provided so that the main body portion 2 is not pushed away by the force received from the stopped river water.

  As shown in FIGS. 1, 3, and 4, the main body 2 has a substantially triangular prism shape that is laid down. The main body 2 has a plate-like solid rectangular bottom 2a serving as a weight, a hollow substantially triangular prism-shaped wall 2b provided on the bottom 2a with a predetermined gap, and extends perpendicular to the wall 2b. Projecting upstream so as to be in contact with a solid triangular prism-shaped bottom 2d provided at a predetermined intermediate position 2c and a position in contact with the weir 51 and an upper part 2e of a vertically extending portion of the wall 2b It is comprised with the wall 2f of the hollow or solid substantially triangular prism shape attached to. The shape of the wall 2f may be a plate-shaped rectangular parallelepiped with an inclined end surface on the upstream side as long as the river water can be divided into upper and lower parts depending on the water level of the river water.

  As shown in FIGS. 2 to 4, the fixing portion 3 is connected to the main body portion 2 by a reinforcing bar, and a protruding portion 4 made of concrete that extends in the lateral direction from the main body portion 2 and is embedded in the dike 52 on both banks. And a side wall 5 made of concrete. The protrusion 4 is embedded so as to pierce the bank 52 on both banks, thereby fixing the main body 2 at the installation position.

  As shown in FIG. 5, the side wall 5 has a length of, for example, 100 m to 1 km, and is placed at the installation position so that the main body 2 is not washed away by the water flow due to friction with the embankment 52 or the like. Fix it. Thereby, the operation | work which piles up in a riverbed in order to fix the main-body part 2 becomes unnecessary. Although the length of the side wall 5 is determined by the height of the main body 2, the length of the side wall 5 sufficiently resists the force received from the water at the assumed water level depending on the hardness of the dyke 52 and the strength of attachment to the dyke 52. Make it as long as possible.

  Since the power generation device 1 includes the fixing portion 3 having the above-described configuration, the dam-type power generation device can be fixed at the installation position without hitting a pile on the weir or the riverbed.

  The power generation device 1 includes first and second power generation units G1 and G2 suitable for use as a dam type power generation device.

  The first power generation unit G <b> 1 includes an inclined unit 6, a water wheel 9, and a power generation motor 11. The inclined portion 6 is an inclined surface having an inclination angle of, for example, 45 degrees, which causes the water exceeding the upper portion of the main body portion 2 to fall downstream from the river water stored by damming. The water wheel 9 is provided at a position below the inclined portion 6 so as to be rotated by the water flowing through the inclined portion 6, and is connected to the power generation motor 11 via a coupler 9e (FIG. 7) that increases the rotational speed. ing. In the first power generation unit G1, the number of the inclined portions 6 is one, but five sets of the water wheel 9 and the power generation motor 11 are provided. The number of sets may be increased or decreased according to the river width.

  The second power generation unit G <b> 2 includes a guide unit 7, a water passage 8, a water wheel 10, a power generation motor 12, and a drainage channel 13. The guide part 7 is in a predetermined height position H <b> 2 of the main body part 2 and has a funnel shape that guides the dammed surrounding river water to be narrowed to the inlet of the water passage 8. The water passage 8 is a stainless steel passage that causes the river water collected at the entrance by the guide portion 7 to drop into the drainage channel 13 on the downstream side. The water turbine 10 is provided at a position below the water passage 8 so as to be rotated by the water flowing through the water passage 8, and is connected to the power generation motor 12 via a coupler 10a that increases the rotational speed. The second power generation unit G2 includes eight water passages 8. Each water passage 8 includes a guide portion 7, a water wheel 10, a power generation motor 12, and a drainage channel 13. The number of water passages 8 may be increased or decreased according to the river width, the momentum of the river water, and the like.

  The water turbine 9 is arranged on the same axis and has a plurality of hook-shaped wings 9b attached radially to the shaft 9a as shown in FIGS. Both ends of the shaft 9a are connected to bearing arms 9c and 9d. A power generation motor 11 is connected to the bearing arm 9d side via a coupler 9e that increases the rotational speed of the shaft 9a. 7 corresponds to a cross-sectional view taken along the line C-C of the water wheel 9 shown in FIG. 8, and FIG. 8 corresponds to a cross-sectional view taken along the line BB of the water wheel 9 shown in FIG. As shown in FIG. 8, the thickness of the wing 9 b of the water wheel 9 is not uniform, and is made thinner with increasing distance from the shaft in the radial direction. By adopting this configuration, when a water flow is received on the concave surface of the wing 9b, the width in the radial direction is widened with respect to the rotation axis. Thereby, the surface which receives force from a water flow can be widened, and it can receive power and rotate efficiently, and can generate electric power.

  As shown in FIG. 9, the water turbine 10 provided in the second power generation unit G2 has a plurality of wings 10a formed of thin, elastic, uniform springs that are curved in a bowl shape. doing. The wing 10a has a hook-shaped cross section, and has a shape wound inward with a gradually increasing curvature as it approaches the end in the radial direction. When a water flow is received on the concave surface of the wing 10a, the bending is reduced, the curvature is reduced, and the radial width (W1) is widened with respect to the rotation axis. This increases the surface weir receiving the force from the water flow. When the water wheel 10 rotates and the water flow is not received on the concave surface of the wing 10a, the deflection increases, the curvature increases, and the radial width decreases (W2 <W1). Thereby, the force from the water flow received on the convex back surface is reduced. As a result, the water turbine 10 using the wings 10a can be rotated more efficiently by receiving the force from the water flow and can generate electric power.

  The construction of the dam type power generator 1 having the above-described configuration is performed using a well-known construction method in dam construction or the like. For example, a predetermined area of half of the river is dammed, and the other half is allowed to flow river water, and the half of the main body 2 and the fixing part 3 are formed in the dammed area. Thereafter, the other half of the area is dammed and the remaining half is made to allow river water to flow, and the remaining half of the main body 2 and the fixing part 3 are formed in the dammed area. The river width in which the dam type power generator 1 is installed is not particularly limited. For example, when the river width is wider than 30 m, for example, about 100 m, the river width is divided into a plurality, and the main body 2 is constructed for each divided section.

(Second Embodiment)
A dam type power generator 60 according to a second embodiment will be described. In FIG. 10 to FIG. 16, the same reference numerals are assigned to the same or corresponding components as those of the dam-type power generator 1 according to the first embodiment and each part of the river 50 in which the power generator 1 is installed. The duplicate explanation is omitted. As shown in FIGS. 10 to 14, the dam type power generating device 60 according to the present embodiment includes a stainless steel sluice 65 capable of adjusting the flow rate on the main body 2 in addition to the main body 2 and the fixed portion 3. In addition, a third power generation unit G3 is provided instead of the second power generation unit G2 included in the dam type power generation device 1 according to the first embodiment. Other configurations are the same as the configuration of the dam type power generation device 1 of the first embodiment.

  The sluice 65 includes a gate plate 66 and an adjustment unit 67 that adjusts the flow rate by moving the gate plate 66 up and down. For example, if the flow rate is squeezed while the water level is rising, the water blocked by the gate plate 66 is stored, and as a result, the amount of water flowing into the third power generation unit G3 can be increased.

  The third power generation unit G3 includes a guide unit 7 and a water passage 70 including two power generation water turbines. As shown in FIG. 15, the water passage 70 includes a first water turbine chamber 71 that communicates with the guide portion 7, and a second water turbine that communicates with the first water turbine chamber 71 via a passage 72. A chamber 73 and a drainage channel 75 communicating with the second water turbine chamber via a passage 74 are provided.

  The first water turbine chamber 71 has a rectangular parallelepiped shape, preferably a legislature shape, and includes a water wheel 76 having a rotating shaft 76a extending in the vertical direction. The shape of the water wheel 76 is the same as that of the water wheel 10 (FIG. 9). The first water turbine chamber 71 has an opening 71 a on the side facing the guide portion 7, and has an opening 71 b communicating with the passage 72 on the bottom on the side facing the surface having the opening 71 a. doing. By adopting this configuration, the water force can be applied to the water wheel 76 over a range of about 120 degrees. As shown in FIG. 16, the rotating shaft 76 a of the water turbine 76 is connected to the gear 80. The gear 80 is connected to a gear 82 attached to the tip of the rotating shaft of the motor 81 for power generation, and increases the rotation of the water turbine 76.

  Further, as shown in FIG. 15, the second water turbine chamber 73 includes a water wheel 77 having a columnar shape and having a rotating shaft extending laterally therein. The shape of the water wheel 77 is the same as that of the water wheel 10 (FIG. 9). The second water turbine chamber 73 has an opening 73a that communicates with the passage 72 in the cylindrical side surface portion from about 10 o'clock to 12 o'clock as viewed in the direction indicated by the arrow 78, and from about 3 o'clock to 5 o'clock. An opening 73b communicating with the passage 74 is provided on the side surface portion of the cylinder. By adopting this configuration, water can continue to exert a force on the water wheel 77 over a range of about 120 degrees. As for the water wheel 77, the rotating shaft 77a is connected with the gear 85 (FIG. 10). The gear 85 is connected to a gear 87 attached to the tip of the rotating shaft of the power generation motor 86 (FIG. 10), and increases the rotation of the water wheel 77.

  By using the water passage 70 having the above-described configuration, the two power generation motors 81 and 86 are used more efficiently than the case where the water passage 8 provided in the dam-type power generation device 1 of the first embodiment is used. It can generate electricity well.

  In addition, this invention is not restricted to the structure of the said various embodiment, A various deformation | transformation is possible in the range which does not change the meaning of invention. For example, the side wall 5 is connected to the main body 2 by a reinforcing bar, but may be connected by a stronger steel frame. Further, the number of dam-type power generation devices 1 or 60 is not limited to one per river, and a plurality of them may be provided along the river. Further, in order to firmly attach the side wall 5 to the levee, the side wall 5 may have a spike-like pin on the levee side.

  The dam type power generation device of the present invention can be used in general rivers where dams are provided. Since it is not necessary to drive a fixing pile into the riverbed, the dam-type power generation device of the present invention can be installed on an artificial river weir that is entirely covered with concrete from the riverbed to the upper part of the levee. .

DESCRIPTION OF SYMBOLS 1,60 Barrage type power generator 2 Main body part 3 Fixing part 4 Protruding part 5 Side wall 6 Inclined part 7 Guide part 8, 70 Water passage 9, 10, 76, 77 Water wheel 10a Wing 11, 12, 81, 86 Motor for power generation 50 River 51 Weir 52 Embankment

Claims (2)

A dam-type power generator that is installed on a river weir with embankments on both banks and generates power using the flow of river water,
A main body of a dam type that is lower than the levee, has the same width as the river, and is distributed for a predetermined length on the upstream side and the downstream side across the position where the river water falls. And
A fixed portion fixed to the weir so that the main body is not swept away by the force received from the river water that is dammed, formed integrally with the main body;
The fixing portion extends from the main body portion in a lateral direction and is embedded in the levee, and the levee extends from a river bottom position to a position higher than a full water level determined by the top and bottom height of the main body portion. A side wall provided toward the upstream side along the side of the riverbank from both ends of the main body so as to cover,
The body part is
Among the river water that has been dammed up and stored, an inclined part for dropping the water beyond the main body part downstream,
A guide portion that is located at a predetermined height position of the main body portion and guides the dammed river water to be narrowed down;
A water passage communicating with the guide portion and allowing water to fall downstream;
A water wheel provided at a position below the inclined portion and the water passage, respectively, and rotated by the water dropped by them, and
A dam-type power generation device, comprising: a power generation motor coupled to each of the water wheels.   The water wheel provided in the water passage has a plurality of wings formed of leaf springs curved in a bowl shape, and the wings are curved with reduced deflection when subjected to a water flow on a concave surface. The rate decreases, the radial width with respect to the rotation axis widens, and when the water flow is not received on the surface, the deflection increases, the curvature increases, and the radial width decreases, thereby increasing the convex shape. The dam type power generator according to claim 1, wherein the force from the water flow received on the back surface is reduced.

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