JP5935114B2 - Power generator - Google Patents

Description

  The present invention relates to a power generation device, and more particularly to a so-called environmentally friendly hydroelectric power generation device that has no danger like a nuclear power generation device and does not have an adverse effect on the global environment like thermal power generation.

  There are various types of turbines used for hydroelectric power generation, such as a Pelton turbine that is an impulsive turbine by jets, a Francis turbine that is a typical reaction turbine that uses water pressure, or a Kaplan turbine that is a propeller-like impeller. .

JP 06-137253 A JP 2001-186663 A

  As described in Patent Document 1 or 2, the above-described conventional power generator using a water turbine is generally large in size and complicated in structure, and power generation efficiency is poor unless the water flow is large in flow rate and flow velocity.

  In addition, there is still room for improvement, such as the contact time between the water flow and the water wheel being short, and the water flow leaving the momentum being thrown away without sufficiently extracting the kinetic energy or position energy of the water flow.

  Accordingly, an object of the present invention is to provide a power generation apparatus using a novel water turbine that can generate power efficiently even from a water flow that has a simple structure, a large output torque, and a low flow velocity.

In order to achieve the above object, the invention described in claim 1 is a U-shaped cross-sectional shape opened upward along a river, and has a water channel having the same gradient as the river, and at the start end of the water channel , A cylindrical intake port that protrudes from the bottom of the river and is located below the water surface of the river is provided, and the cylindrical portion below the intake port is connected to the starting end cylinder portion of the irrigation channel, and its cross-sectional area is set to the set water surface of the irrigation channel Set the same as the cross-sectional area of the lower water flow, so that a part of the river flow always flows in this irrigation channel, and in the irrigation channel along the length direction of the irrigation channel horizontally. A plurality of underhanging centripetal turbines having a turbine wheel shaft extending in the width direction and a plurality of flat blades radially connected to the outer peripheral surface of the turbine shaft so as to be joined to each other. On the other hand, the water surface of the water flowing through the irrigation channel is Ri order to become lower, and disposed aperture plate across the full width width starting end of canal irrigation channels, other, characterized in that the concatenation of the generator s husband waterwheel axis of the lower seat centripetal waterwheel .

  The power generator according to claim 1 configured as described above is configured such that a portion below the center of the water wheel shaft of the blade plate radially disposed around the water wheel shaft as viewed from the side surface side of the water channel is disposed on the water channel. Since driving is performed on the downstream side, coupled with the fact that the portion above the center of the water wheel shaft idles in the air, a plurality of water wheels rotate simultaneously in the same direction to efficiently generate power.

  Further, since the water flow or water pressure for turning the water turbine acts on the entire surface of the wide blade plate, for example, the rotational torque generated on the water turbine shaft is significantly larger than that of a propeller water turbine.

  Furthermore, since each water wheel has a simple structure and can be arranged in a large number in the irrigation canal, large power can be taken out with a simple structure.

  In addition, unlike wind power generation or solar power generation, the amount of water flowing through the irrigation channel is almost constant throughout the night and day, so that power can be stably taken out.

  In addition, a throttle plate is installed at the start of the irrigation channel so that the surface of the water flowing through the irrigation channel is below the turbine axis so that the water turbine will not stop even if the river increases due to heavy rain or typhoon. There are various effects.

1 is a schematic longitudinal sectional view of a power generator according to the present invention. FIG. FIG. The enlarged side view of a slat. The diagrammatic cross-sectional view of the starting end of the irrigation channel.

  An irrigation channel having the same gradient as the river is provided along the river, and in this irrigation channel, a water wheel shaft extending horizontally in the width direction of the irrigation channel along the length direction thereof, and a base end thereof on the outer peripheral surface of the water wheel shaft A plurality of lower centripetal turbines having a plurality of flat blades radially connected so as to join the edges are arranged in a row, while the water surface of the water flow through the irrigation channel is below the turbine shaft Therefore, a diaphragm plate is disposed at the start end of the irrigation channel, so that large-capacity power generation is possible with a simple configuration.

Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a irrigation channel, and this irrigation channel 1 is a U-shaped channel with a transverse cross-section opened upward along the river, for example, a concrete channel, although the cross-sectional area is not limited. Sq.m (square meter) units are preferred.

  A water flow flows in the lower half portion of the irrigation channel 1 in the direction of the arrow (from left to right in the figure). In addition, this irrigation channel is not horizontal, has the same slope as the river, and descends to the right.

  In the irrigation channel 1, a water wheel indicated by a reference numeral 2 as a whole is disposed. In order to clarify the drawing, only one water wheel is shown in FIG. 1, but actually, a large number of water wheels 2, 2 are arranged in the irrigation channel 1.

  As shown in FIGS. 1 and 2, the water turbine 2 includes a plurality of stepped water turbine shafts 3 having small diameters at both ends and a base end edge joined to the outer peripheral surface of the water turbine shaft 3 (illustrated). In this embodiment, 8 flat plate blades 4 and 4 are radially combined.

  In order to couple the vane plate 4 to the water wheel shaft, for example, as shown in FIG. 3, the cross section that can be joined to the outer peripheral surface of the water wheel shaft without any gap at the base end edge (lower edge in FIG. 3) The joining pieces 5 to be formed are continuously provided integrally.

  Then, a plurality of screw holes (not shown) are formed along the length direction of the joining piece 5 (the paper surface direction of FIG. 3 or the width direction of the blade plate 4), while the water wheel shaft 3 has a predetermined length. A plurality of screw holes (not shown) corresponding to the screw holes are formed along the generatrix at the angular position, and the blade plate 4 is fixed to the water wheel shaft by approaching the screws.

  Similarly, a blade is screwed to a predetermined angular position on the outer peripheral surface of the water wheel shaft to form a water wheel (outer centripetal water wheel) 2 as shown in FIGS.

  In the illustrated embodiment, the free edge portion (upper edge portion in FIG. 3) of the square blade plate 4 is formed in a shallow bowl shape, but this may be a flat plate shape.

  As shown in FIG. 2, the water turbine configured as described above can rotate the small diameter portions at both ends of the water turbine shaft 3 in shaft holes (not shown) formed in the pair of side plates 7 and 7 of the water turbine holding frame 6 having a rectangular cross section. It is supported by the water turbine holding frame 6 so as to be fitted to the water turbine.

  The top plate 8 and the substrate 9 of the water turbine holding frame 6 are connected to each other via the side plates 7 and 7 so that the pair of side plates 7 and 7 are connected to each other, and the water turbine holding frame 6 having a rectangular cross section as a whole. Is formed.

  In order to enhance the rigidity of the water turbine holding frame, the top plate 8, the pair of side plates 7, 7 and the substrate 9 are coupled to each other by, for example, screwing or welding via an L-shaped bracket.

  Further, in order to fix the water turbine holding frame 6 fitted with the water wheel in the water channel 1, for example, at least three stainless bolts are provided on the bottom surface of the water channel, and the substrate of the water wheel holding frame corresponding to this is provided. The same number of bolt holes are drilled in 9, and the base plate 9 is bolted to the bottom of the water channel with a nut (not shown).

On the other hand, the small-diameter portion of the water wheel shaft protruding through the side plate and projecting to the outer surface of the side plate is connected to the generator 11 in a state of being fitted to a bearing with a seal device, and the output from the generator 11 is corded with a waterproof structure. To a control device (not shown).
The bearing with the sealing device described above is commercially available.

  Alternatively, the second bevel gear is mounted on the small diameter portion of the water wheel shaft 3 that penetrates the side plate and protrudes from the outer surface of the side plate, and is mounted on the lower end of the vertical shaft and meshes with and engages with the first bevel gear. Is transmitted to the generator disposed on the water surface of the irrigation channel through the vertical axis (not shown).

  As is apparent from FIG. 1, the power generator according to one embodiment of the present invention configured as described above rotates strongly when the water surface 12 is below the center of the water wheel shaft 3 with respect to the water flow in the direction of the arrow. The rotation is transmitted to the generator 11 to generate power.

  On the other hand, when the amount of water in the irrigation channel increases due to an increase in river water, the water surface 12 immerses the water axle 3 and crosses the center.

  Then, since the water flow above the center of the water wheel shaft acts in the direction of braking the rotation of the water wheel, the efficiency of power generation is reduced, and the water wheel is stopped when the entire water wheel is submerged.

  The power generation device according to the present invention is provided with a throttle plate 13 at the start end of the water channel so that the water flow does not immerse the water axle even if the water increases.

  The diaphragm plate 13 in the illustrated embodiment is a plate-like body that hangs obliquely from the ceiling of the irrigation channel having a rectangular cross section, the side edge of which is joined to the inner surface of the side wall of the irrigation channel, and the lower end edge is close to the set water surface 12. I am facing this.

  With this configuration, when the water surface 12 rises due to the increase in river water, the portion of the water flow that exceeds the lower edge of the squeezing plate 13 stays upstream of the squeezing plate 13, and only the water flow that has submerged the squeezing plate 13. Since it flows downstream of the irrigation channel 1, the water surface downstream of the throttle plate is maintained at the set value.

  Such a squeezing plate is used, for example, at the beginning of the flow of the bowl that distributes the hot springs in the hot spring resort to each inn, and its distribution function has been confirmed.

  Incidentally, as shown in FIG. 4, the starting end portion of the irrigation channel in the illustrated embodiment has an intake port 16 that protrudes from the river bottom 14 of the river and is positioned below the water surface 15 of the river. The cylindrical portion is connected to the starting end cylindrical portion of the water channel 1, and the cross-sectional area thereof is set to be the same as the cross-sectional area of the water flow below the set water surface 12 of the water channel 1.

  Therefore, at the beginning of the water increase in the river, the water flow squeezed by the lower edge of the squeezing plate 13 stays on the upstream side of the squeezing plate 13, but immediately the air above the staying amount passes through the tubular portion into the river. As a result, the pressure of the incompressible water column on the upstream side of the diaphragm plate is increased as shown in FIG.

  Therefore, the level of the water surface 12 in the irrigation channel 1 is kept at the set value.

DESCRIPTION OF SYMBOLS 1 Waterway 2 Water wheel 3 Water wheel shaft 4 Blade plate 5 Joint piece 6 Holding frame 7 Side plate 8 Top plate 9 Substrate 11 Generator 12 Water surface 13 Diaphragm plate 14 River bottom 15 River surface 16 Inlet

Claims (1)

A canal with the same cross-section as the river, with a cross-sectional shape that opens upward along the river. At the beginning of this canal, a cylindrical shape that protrudes from the bottom of the river and is located below the river surface. An intake port is provided, and the cylinder portion below the intake port is connected to the start end cylinder portion of the irrigation channel, and the cross-sectional area thereof is set to be the same as the cross-sectional area of the water flow below the set water surface of the irrigation channel. A part of the river water flow always flows in the water channel, along the length direction of the water shaft, extending horizontally in the width direction of the water channel, and on the outer peripheral surface of the water shaft. A plurality of lower centripetal turbines having a plurality of flat blades radially connected so as to join their base edges are arranged, while the water surface of the water flow flowing through the irrigation channel is below the turbine shaft. to so made, the width starting end of the canal It arranged a throttle plate across the full width of the channel, while the power generation apparatus formed by connecting the generator to the people each hydraulic turbine shaft of the lower seat centripetal waterwheel.

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