WO2019049901A1

WO2019049901A1 - Hydraulic power generation device

Info

Publication number: WO2019049901A1
Application number: PCT/JP2018/032922
Authority: WO
Inventors: 鈴木　政彦
Original assignee: 株式会社ベルシオン
Priority date: 2017-09-06
Filing date: 2018-09-05
Publication date: 2019-03-14

Abstract

Provided is a hydraulic power generation device that is capable of increasing power generation efficiency by efficiently rotating a water turbine rotor even with a water flow of a low flow velocity. A plurality of water flow deflection plates 7 that are tilted at a prescribed angle with respect to the rotational axis of a water turbine rotor 6 and that radially project are fixed to the outer circumferential surface of a rotor support case 5 in a longitudinal direction, and water flow is deflected by the water flow deflection plates 7 in a direction so as to increase the speed of the water turbine rotor 6.

Description

Hydroelectric equipment

The present invention relates to, for example, a small-sized hydroelectric power unit installed in waterways, rivers, etc., and more particularly to a hydroelectric power unit capable of efficiently generating power even in a water flow with a small difference in elevation.

For example,

Patent Literatures

1 and 2 describe a small-sized hydroelectric power generation device that uses natural water flow, such as a canal, without using the head of water and does not use the head of water.
On the other hand, Patent Document 3 describes a hydroelectric power generation apparatus using a water drop.

JP, 2013-253577, A Patent No. 5787787 JP, 2008-151151, A

In the hydroelectric power plant installed in the above-mentioned canal and the like, the canal generally has a small height difference and the velocity of the water flow is not necessarily large, so the number of rotations and torque of the rotor (impeller) is large The challenge is to raise
The hydroelectric generator described in Patent Document 1 includes a duct whose outlet is larger than the inlet, and the rotor is disposed immediately after the inlet inside the duct, and the water flow with a high flow velocity flowing from the inlet is used. The rotational speed of the rotor is increased to enable efficient power generation.

Moreover, in the hydraulic power generation device described in Patent Document 2, a duct whose inner diameter on the downstream side is smaller than that on the upstream side is provided, and the small diameter portion surrounds the rotor (impeller) and the flow velocity passing through the small diameter portion is high. The water flow efficiently rotates the rotor to increase power generation efficiency.
However, in the hydroelectric power generation device described in any of the above-mentioned patent documents, there is a limit to the speed-up effect of the water flow by the duct, so improvement of the power generation efficiency by the duct can not be expected very much in the canal with small flow velocity.

The hydroelectric generator using the head described in Patent Document 3 has the advantage that the power generation efficiency is high because the potential energy of water is large, but the hydroelectric generator is installed in the existing water channel or river with a small difference in elevation. It is difficult to install and the installation location is limited.
Therefore, it is necessary to lay down concrete for forming a head at the bottom of the water channel or excavate the water channel to form a large head, and a large-scale civil engineering work is required. The cost is high.

The present invention has been made in view of the above problems, and the water turbine rotor can be efficiently rotated to improve the power generation efficiency, and the installation is easy, even if the water flow has a small height difference and a small flow velocity. The purpose is to provide a hydroelectric power generation apparatus that can reduce costs.

According to the hydraulic power unit of the present invention, the above problem is solved as follows.
(1) A rotor support case long in the water flow direction, supported by the support so as to be disposed in the water flow, a longitudinally-oriented rotor shaft rotatably supported on the rotor support case, and the rotor shaft It has a generator linked and generating power by rotation of the rotor shaft, and a plurality of blades mounted at equal intervals circumferentially on one end of the downstream side of the rotor shaft and receiving a stream of water and rotating in a certain direction The water turbine rotor and the outer circumferential surface of the rotor support case are projected in the radial direction in a radial direction and fixed at a predetermined angle with respect to the rotation axis of the water turbine rotor, and the water flow is accelerated by the water turbine rotor. And a plurality of water flow deflectors that can be deflected in the direction of rotation.

With such a configuration, the water flow is deflected to turn toward the water turbine rotor by the plurality of water flow deflection plates, and each blade is pushed in the acceleration direction by the deflected water flow. In addition to the energy from the water flow, turning energy is added and the rotational speed and torque of the water turbine rotor are increased.
Therefore, even when the hydroelectric generator according to the present invention is installed, for example, in a canal where the difference in elevation is small and the flow velocity of the water flow is small, the power generation efficiency can be enhanced.
Moreover, it is not necessary to excavate a water channel by civil engineering work etc. and to build a big head like before, and to install a hydraulic power unit easily in the existing water channel or river etc. at low cost. it can.

(2) In the above (1), a bent portion is formed at the tip of the water flow deflection plate to suppress the flow of the water flow in the centrifugal direction.

With such a configuration, the flow of water deflected by the plurality of water flow deflection plates is suppressed from flowing in the centrifugal direction, and the amount of water and the amount of water deflected in the acceleration direction of the water turbine rotor are increased. Speed and torque can be efficiently increased, and power generation efficiency is further improved.

(3) In the above (1) or (2), the water flow deflection plate is curved in a curved shape so that the water flow is curved toward the water turbine rotor.

With such a configuration, the water flow deflected by the plurality of water flow deflection plates is likely to be a swirling flow, so the rotational speed and torque of the water turbine rotor are further increased, and the power generation efficiency is further improved.

(4) In any one of the above items (1) to (3), the upstream water receiving surface of the blade is directed rearward in the rotational direction so that the inclination angle gradually increases toward the base end. The inclined surface is inclined, and the chord length of the blade is gradually increased from the proximal end to the distal end, and the blade is formed with an inclined portion inclined in the upstream direction at the distal end starting from the largest chord length. The projecting dimension of the water flow deflection plate in the radial direction is such that the tip of the water flow deflection plate extends to the vicinity of the maximum chord length.

With such a configuration, the deflected water flow after passing through the plurality of water flow deflectors strikes the inclined surface from the base end of the plurality of lift blades to the vicinity of the maximum chord length in a wide range, and the Coanda effect by the deflected water flow By this, the lift type blade is strongly pushed in the rotational direction, and the rotation force and torque of the water turbine rotor are increased by the increase of the lift force.

In addition, the tip portion of the blade is provided with an inclined portion which inclines in the upstream direction, and the inclined portion captures a water flow which is going to escape from the tip of the blade in the centrifugal direction. The flow out in the direction and the reaction pushes the tip of the blade in the direction of rotation, thereby increasing the rotational efficiency of the water turbine rotor.
Therefore, the number of revolutions and the torque of the water turbine rotor are increased by the synergetic effect of the water flow deflection plate and the inclined portion, and the power generation efficiency is improved.

(5) In any of the above items (1) to (3), the upstream water receiving surface of the blade is directed rearward in the rotational direction so that the inclination angle gradually increases toward the proximal end. The inclined surface is inclined, and the chord length of the blade is gradually increased from the proximal end to the distal end, and the blade is formed with an inclined portion inclined in the upstream direction at the distal end starting from the largest chord length. The radial projection size of the water flow deflection plate is a length such that the tip of the water flow deflection plate extends to the middle portion of the blade.

With such a configuration, the base side of the blade having a large inclination angle is strongly pressed in the rotational direction by the Coanda effect, so the radial projection dimension of the water flow deflection plate is set to a length extending to the middle portion of the blade. The rotation speed and torque of the water turbine rotor are increased, and the power generation efficiency is improved.

In addition, the flow resistance is reduced by the amount by which the radial projection size of the water flow deflection plate is reduced, and the centrifugal half portion in which the chord length of each blade is gradually increased is opened, and the water receiving surface on the upstream side There is no risk of reducing the rotational speed and torque of the water turbine rotor since the water flow hits without

(6) In any one of the above items (1) to (5), the number of the water flow deflection plates is 3 to 16, and the inclination angle of each water flow deflection plate with respect to the rotation axis of the water turbine rotor is a water flow deflection plate The smaller the number is, the smaller the number is, and the smaller the number is, the larger the number does not exceed 45 degrees.

With such a configuration, the number of water flow deflection plates is within a range that does not reduce the flow velocity, and even when the number of water flow deflection plates is large, the flow resistance increases and the speed of the deflection water flow toward the water turbine rotor The lowering is suppressed, and when the number of the water flow deflection plates is small, the tilt angle can be increased to exhibit the water flow deflection effect.

(7) In any one of the items (1) to (6), the rotor support case, the water turbine rotor, and the water flow deflection plate are surrounded by a cylindrical water transmission duct disposed in a water flow.

With such a configuration, the water flow that has flowed into the water conveyance duct from the upstream side flows neatly in the downstream direction, and the entire water flow in the water conveyance duct is deflected by the water flow deflection plate in the direction to accelerate the water turbine rotor effectively. Therefore, the rotational speed and torque of the water turbine rotor are increased, and the power generation efficiency is improved.

(8) In any one of the items (1) to (7), the rotor support case has a fish shape having a large diameter on the upstream side and a gradually smaller diameter on the downstream side.

With such a configuration, the water flow from the upstream side toward the rotor support case quickly flows backward along the fish shape of the rotor support case due to the Coanda effect, and the efficiency near the base of the blade of the water turbine rotor is accelerated in the acceleration direction I will push well.

(9) The rotor support case long in the water flow direction is supported by a support in the water in the conduit for draining the stored water in the water storage tank of the head channel device or the water in the channel using a head, It projects radially outward on the outer peripheral surface on the downstream side in the longitudinal direction of the rotor support case, and inclines at a predetermined angle to the rotation axis of the water turbine rotor, and accelerates the water rotor in the water conduit And a plurality of water flow deflectors that can be deflected in the direction of rotation.

According to such a configuration, the flow of water flowing in the water conduit is deflected by the plurality of water flow deflecting plates inclined and fixed to the rotor support case so as to turn toward the water turbine rotor. The blade is pushed in the speed increasing direction. Thus, turning energy is added to each blade in addition to the water position (falling) energy, and the rotation speed and torque of the water turbine rotor are increased.
Therefore, the height of the water conduit for draining the water is limited by the installation space of the water storage tank, the depth of the water channel, and the like, and the power generation efficiency can be improved even when the drop energy of the water is small.
Moreover, since it is not necessary to provide the helical rib for making water flow into a swirl flow like before conventionally on the inner peripheral surface of a water conduit, the manufacturing cost of a water conduit is reduced and it can provide a cheap hydraulic power unit. it can.

(10) In the above item (9), the water channel is a water channel, and in this water channel, a weir plate is installed to raise the water level of the upstream water flow and form a head gap with the downstream water flow; The upper end portion of the water conduit is connected to the upper portion of the weir plate so as to communicate with the water conduction hole formed on the upper portion of the weir plate for discharging the upstream water whose water level has risen to the downstream side.

According to such a configuration, even if it is a canal where it is difficult to form a head of water, it is possible to trap the water flow by the weir plate, raise the water level on the upstream side, and form a head in the canal to generate power. The power generation efficiency is higher than hydroelectric power generation using water flowing naturally through irrigation canal.
Moreover, since the water level on the upstream side can be raised by the weir plate and a head can be formed in the canal, the water flow in the canal is small, and the water turbine rotor in the water conduit can be efficiently rotated even if the water level is low. Can be enhanced.
Furthermore, since a drop can be formed in the canal just by blocking the water flow by the weir plate, extensive civil engineering work for constructing a concrete weir and the like becomes unnecessary, and the installation cost of the hydroelectric generator can be reduced.

According to the hydroelectric power generation apparatus of the present invention, even with a water flow having a small height difference and a low flow velocity, the water turbine rotor can be efficiently rotated to improve the power generation efficiency.

It is a side view of Example 1 of the hydraulic power unit concerning the present invention. It is the front view which looked at FIG. 1 from the upstream side. It is an enlarged front view of a single blade. FIG. 4 is an enlarged cross-sectional plan view taken along line IV-IV of FIG. 3; FIG. 5 is an enlarged cross-sectional plan view taken along line VV of FIG. 3; FIG. 6 is an enlarged cross-sectional plan view taken along line VI-VI of FIG. 3; It is a side view of Example 2 of the hydraulic power unit concerning the present invention. It is the front view which looked at FIG. 7 from the upstream side. It is a front view of Example 3 of the hydraulic power unit concerning the present invention. It is a perspective view which expands and shows a part of Example 4 of the hydraulic power unit based on this invention. It is a partially cutaway side view of Example 5 of the hydraulic power unit according to the present invention. It is a partially cutaway side view of Example 6 of the hydraulic power unit according to the present invention. FIG. 13 is an enlarged longitudinal front elevational view of FIG. 12 taken along line XIII-XIII. It is a vertical side view of Example 7 of the hydraulic power unit concerning the present invention. FIG. 15 is an enlarged cross-sectional plan view taken along line XV-XV of FIG. It is an enlarged side view of the principal part of a water turbine rotor. It is a perspective view of the principal part of the modification which curved the water flow deflection board. It is a longitudinal side view of Example 8 of the hydraulic power unit concerning the present invention. It is a longitudinal side view of Example 9 of the hydraulic power unit according to the present invention. It is a longitudinal side view of Example 10 of the hydraulic power unit concerning the present invention. It is a longitudinal side view of Example 11 of the hydraulic power unit concerning the present invention. It is a side view which shows the modification which made the water turbine rotor the drag type water turbine rotor.

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIGS. 1 and 2 show a first embodiment of a hydroelectric generator according to the present invention. The hydroelectric generator 1 is, for example, a relatively small one generated by the water flow of the agricultural water channel 2, and is supported It is installed in the water flow of the canal 2 in a form supported by the frame 3.
In the following description, the upstream side (left side in FIG. 1) of the water channel 2 is referred to as the front, and the downstream side (right side in FIG. 1) is referred to as the rear.

The support frame 3 is connected to the lower ends of the four columns 3A spaced apart in the front, rear, left, and right directions with the ends of the four lower lateral ridges 3B facing in the front, rear, left and right directions. By fixing the face plate 3C, it has a rectangular frame shape in which the four front and rear surfaces and the lower surface are open.
As shown by the arrow in FIG. 1, water flowing from the upstream side to the downstream side in the canal 2 can pass through the rectangular frame-like support frame 3 without resistance.

The upper and lower dimensions of the support frame 3 are slightly larger than the height of the water channel 2. Further, in the present embodiment, the lateral width of the support frame 3 is made substantially equal to the lateral width of the canal 2 by taking the case where the lateral width of the canal 2 is relatively small as an example. However, since the support frame 3 is fixed to the canal 2 by the fixture 4 described later, the support frame 3 should be installed in the canal 2 in an immobile state even if the canal 2 is wide. Can.
The support frames 3 dropped into the canal 2 are fixed to the upper surfaces of the left and right wall surfaces of the canal 2 by

fixtures

4 and 4 at a plurality of locations on the left and right sides of the top plate 3C.

The hydroelectric power generation apparatus 1 includes a hollow rotor support case 5 that is long in the water flow direction and a water rotor 6 that is provided at the rear end of the rotor support case 5 and rotates counterclockwise in a front view. 6. A plurality of (eight sheets in this embodiment) water deflectors 7 fixed to the outer peripheral surface in the longitudinal direction (front-rear direction) of the rotor support case 5 in the front close to 6 and the upper surface of the rotor support case 5 near the front The lower end is fixed, the upper end is fitted in the upper surface plate 3C, and is fixed to the hollow case hanging support 8 facing in the vertical direction, and facing the case supporting support 8 at the center of the upper surface of the upper surface plate 3C. And a generator 9 that generates electric power by being linked to the water turbine rotor 6. The water flow deflection plate 7 can be integrally molded with the rotor support case 5 when it is molded with synthetic resin, aluminum or the like.

The lower end portion of the case support rod 8 is fixed to the left and right side surfaces of the middle portion, and the upper end portion is fixed to the lower surface of the upper surface plate 3C. It is held immobile in the central part of the inside.
Although the illustration is omitted, the case hanging support 8 has a fish-like cross section in plan view, which is thick in the left-right direction at the front and gradually becomes thinner toward the rear. The passing water flow is accelerated by the Coanda effect.

The rotor support case 5 has a large diameter at the front and a gradually smaller diameter toward the rear, and has a shape similar to a fish-like tuna etc. The water flow from the front toward the rotor support case 5 is due to the Coanda effect A water flow that flows fast backward along the fish shape of the rotor support case 5 and travels to the vicinity of the base of a blade 13 described later in the water turbine rotor 6 is accelerated by the Coanda effect.

Inside the rotor support case 5, a horizontal rotor shaft 11 directed in the front-rear direction with its rear end slightly protruded from the rear end of the rotor support case 5 is rotatably supported and accommodated by a bearing not shown. There is.

The water turbine rotor 6 has a hub 12 fixed to the rear end of the rotor shaft 11 and a plurality of (four in the present embodiment) lift-type blades (bases in the center direction) fixed to the hub 12 at regular intervals. Hereinafter, it is provided with a blade 13).
The hub 12 and the blade 13 are made of, for example, fiber reinforced synthetic resin (FRP), or a light metal such as aluminum or duralumin. The hub 12 may be omitted and the blade 13 may be directly fixed to the rear end of the rotor shaft 11.

The front end portion of the rotor shaft 11 is, for example, similar to the hydraulic power generator described in Patent Document 1 described above, by means of transmission means (two bevel gears meshing with rotating axes orthogonal to each other) and transmission means By being linked to the generator 9 via a vertical transmission shaft (all not shown) rotated within the support rod 8, the rotor shaft 11 rotates clockwise with the water turbine rotor 6 in a front view direction. The generator 9 is driven to generate electric power.

As also shown in FIGS. 3 to 6, each blade 13 has a chord length gradually increasing from the base side toward the tip end portion and the tip end portion so that the water receiving area becomes larger toward the tip end portion. The rotation efficiency of the water turbine rotor 6 can be enhanced by forming the upstream inclined portion 13A which inclines forward, which is the upstream direction, to increase the effect of capturing the water flow.

The maximum chord length 13B of the blade 13 is formed in the vicinity of the tip, and the upstream inclined portion 13A is formed at the tip with the maximum chord 13B as a base point. The upstream inclined portion 13A is tapered toward the tip, and the inclination angle is, for example, 35 degrees to 45 degrees.

As shown in FIGS. 4 to 6, the cross-sectional shape of the blade 13 is such that the thickness on the front side in the rotational direction indicated by the arrow is thick and the thickness gradually decreases toward the rear end. The rear face is expanded in an arc shape, and the entire blade 13 is twisted at a predetermined angle with respect to the rotor shaft 11 to form a pitch angle, whereby the front face on the upstream side, which is the water receiving face, is directed outward in the rotational direction It is an inclined surface 13C that inclines.
The inclination angle (angle of attack) of the inclined surface 13C is smaller at the tip end side of the blade 13 and gradually larger toward the base end.

Thus, when each blade 13 receives a water flow from the front, a lift is generated on each blade 13 and the water turbine rotor 6 rotates counterclockwise in a front view by the thrust acting in the rotation direction.
Further, since the upstream direction inclined portion 13A is formed at the tip end portion of each blade 13, when the water turbine rotor 6 rotates, along the inclined surface 13C inclined to the rear side in the rotational direction, from the base end to the centrifugal direction Since a part of the water stream to be discharged is captured by the upstream inclined portion 13A and discharged in the diagonal centrifugal direction, the propulsive force in the rotational direction of the blade 13 is increased by the reaction, and the rotation speed and torque of the water turbine rotor 6 Is enhanced.

The eight water flow deflectors 7 described above are provided on the outer peripheral surface in the longitudinal direction of the rotor support case 5 between the case support post 8 and the water turbine rotor 6 at equal intervals so as to project in the radial direction. The base end portion is fixed by inclining in the direction opposite to the rotation direction of the water turbine rotor 6 at a predetermined angle with respect to the rotation axis of 6.
The axial width dimension of each water flow deflection plate 7 is approximately half the axial length of the rotor support case 5, and the radial projection dimension is the maximum chord length of the blade 13 at the tip end. The length extending to the vicinity of the portion 13B or the length extending to the vicinity of the base of the upstream inclined portion 13A.

Furthermore, in the present embodiment, the inclination angle of each water flow deflection plate 7 with respect to the rotation axis of the water turbine rotor 6 is approximately 10 degrees, but this inclination angle is, for example, 5 degrees to 45 degrees depending on the number of water flow deflection plates 7 It is set within the range. That is, as the number of the water flow deflection plates 7 increases, the inclination angle is reduced and the number decreases, so that the water flow resistance plate 7 does not increase the water flow resistance and the speed of the deflection water flow toward the rotor does not decrease. Therefore, it is preferable to make the inclination angle gradually larger.
When the inclination angle is increased, the water flow deflection effect is increased, but the water flow resistance is increased and the flow velocity toward the water turbine rotor 6 is decreased, so it is preferable not to exceed 45 degrees. The number of the water flow deflection plates 7 is preferably in the range of 3 to 16, preferably 6 to 12, in order to exert the water flow deflection effect without reducing the flow velocity.

Like the hydraulic power generation apparatus of the first embodiment, on the outer peripheral surface of the rotor support case 5 located on the upstream side of the water turbine rotor 6, a plurality of water flow deflection plates 7 projecting in the radial direction with respect to the rotation axis of the water turbine rotor 6 When it is fixed by inclining in the direction opposite to the rotation direction, as shown by the arrow in FIG. 1, the direction in which the water flow accelerates the water turbine rotor 6 by the eight water flow deflectors 7, ie, the rotation direction of the water turbine rotor 6 It is deflected to pivot in the opposite direction.

The deflected water flow after passing through each water flow deflecting plate 7 strikes the inclined surface 13C in a wide range from the base end of the plurality of blades 13 to the vicinity of the maximum chord length 13B and rotates each blade 13 by lift force by the Coanda effect. In addition to the energy of the speed of the water flow, turning energy is added to each blade 13 to increase the rotational speed and torque of the water turbine rotor 6.

Further, at the tip end portion of the blade 13, an upstream-facing inclined portion 13A that inclines toward the upstream direction is provided. Therefore, the water stream which is about to escape in the centrifugal direction from the tip of the blade 13 is captured by the upstream inclined portion 13A and flows out in the diagonal centrifugal direction opposite to the rotational direction, and the tip of the blade 13 It is pushed in the rotational direction, and the rotational efficiency of the water turbine rotor 6 is enhanced.
Therefore, even when the flow velocity of the water flow in the canal 2 is small, the number of revolutions and the torque of the water turbine rotor 6 are increased by the synergetic effect of the water flow deflector 7 and the upstream inclined portion 13A, and the power generation efficiency is improved.

7 and 8 are side views of the second embodiment of the hydraulic power generation apparatus according to the present invention. In addition, the same code | symbol is attached | subjected to the element similar to Example 1 mentioned above, and the detailed description is abbreviate | omitted.

The hydroelectric power generation apparatus according to the second embodiment is the same as the first embodiment except that a bent portion 7A bent in the direction opposite to the rotation direction of the water turbine rotor 6 is formed at the tip of the water flow deflection plate 7. The projection dimension in the radial direction of the water flow deflection plate 7 of the second embodiment is set such that the bent portion 7A extends to the vicinity of the maximum chord length portion 13B of the blade 13.

In the hydraulic power generation apparatus according to the second embodiment, since the bent portion 7A bent in the direction opposite to the rotation direction of the water turbine rotor 6 is formed at the tip of the water flow deflection plate 7, each water flow deflection plate 7 The flow of water deflected by the fluid flow is suppressed from flowing in the centrifugal direction, and the amount and amount of water deflected in the direction opposite to the rotation direction of the water turbine rotor 6 are increased.
As a result, the inclined surface 13C from the base end to the vicinity of the maximum chord length 13B of the plurality of blades 13 is strongly pushed in the rotational direction by the lift force by the Coanda effect, and compared to the hydraulic power generation device of the first embodiment, The rotation speed and torque of the water turbine rotor 6 become large, and the power generation efficiency is further improved.

FIG. 9 is a front view of a third embodiment of the hydroelectric power generation apparatus according to the present invention. In addition, the same code | symbol is attached | subjected to the member similar to Example 1 and 2 mentioned above, and the detailed description is abbreviate | omitted.

The hydroelectric power generation apparatus according to the third embodiment has the radial projection dimensions of the plurality of water flow deflectors 7 having the same bending portion 7A as in the second embodiment, and the bending portion 7A is an intermediate portion of the blade 13, ie, the blade 13. The length extends to approximately half the length in the radial direction, and the inclination angle with respect to the rotation axis of the water turbine rotor 6 is larger than that of the water flow deflector 7 of the first and second embodiments (for example, 15 degrees). The

Thus, assuming that the projecting dimension of the water flow deflection plate 7 in the radial direction is a length extending to the middle part of the blade 13 and the inclination angle is large, the water flow deflection plate 7 reverses the rotation direction of the water turbine rotor 6 Since the base side of the blade 13 is pushed in the rotational direction by the lift force by the Coanda effect by the water flow that is largely deflected to the same direction, the number of rotations and the torque of the water turbine rotor 6 increase and the power generation efficiency is improved. Do.

Also, the flow resistance is reduced by the amount by which the radial projection dimension of the water flow deflection plate 7 is reduced, and the half of the centrifugal direction in which the chord length of each blade 13 is gradually increased is opened. Since the water flow strikes the receiving surface without resistance, there is no possibility of reducing the rotational speed and torque of the water turbine rotor 6. In addition, the bending part 7A may be abbreviate | omitted and only the protrusion dimension of the radial direction of the water flow deflection | deviation plate 7 may be made small.

FIG. 10 is an enlarged view of a portion of a hydroelectric power generation apparatus according to a fourth embodiment of the present invention, in which the water flow of each water flow deflection plate 7 of the first embodiment is opposite to the rotation direction of the water turbine rotor 6 It is curved in a curved shape so that it flows in a curved manner.
In this way, the water flow deflected in the direction opposite to the rotation direction of the water turbine rotor 6 by each water flow deflection plate 7 is likely to become a swirling flow, so the inclined surfaces 13C of the plurality of blades 13 are effectively effective in the rotation direction. The rotation speed and torque of the water turbine rotor 6 are increased.
Also in the water flow deflection plate 7 of the fourth embodiment, the bent portion 7A as in the second embodiment may be formed at the tip, and in this case, the generation effect of the swirling flow is enhanced.

FIG. 11 is a side view of a fifth embodiment of the hydroelectric power generation apparatus according to the present invention. In addition, the same code | symbol is attached | subjected to the member similar to Example 1 mentioned above, and the detailed description is abbreviate | omitted.

The hydroelectric generator according to the fifth embodiment has a cylindrical shape in which the diameter of the upstream and downstream ends of the rotor support case 5, the water turbine rotor 6 and the plurality of water flow deflectors 7 are arranged in the water flow of the water channel 2. It is surrounded by the water duct 14 of the A plurality of locations on the outer peripheral surface of the water guiding duct 14 are fixed to the support columns 3A on the upstream side and the downstream side of the support frame 3.
The case support rod 8 penetrates the opening 14A on the upper surface of the water guiding duct 14 while maintaining water tightness and protrudes upward.

In the hydroelectric power generation apparatus according to the fifth embodiment, the water flow which has flowed into the water guiding duct 14 from the upstream side flows neatly in the downstream direction, and the entire water flow in the water guiding duct 14 effectively rotates the water turbine rotor 6 by the water flow deflecting plate 7. As it is deflected in the direction opposite to the direction, the rotational speed and torque of the water turbine rotor 6 are increased, and the power generation efficiency is improved.

Further, when the water flow enters the water conduction duct 14 whose diameter is enlarged at both ends, the flow velocity of the water flow passing through the water conveyance duct 14 becomes larger than the flow velocity of the water flow outside the water conduction duct 14 by the venturi effect. Thus, the flow velocity of the water flow deflected in the direction opposite to the rotation direction of the water turbine rotor 6, and the flow velocity of the deflected water flow after passing through the plurality of water flow deflection plates 7 also become large.
As a result, the plurality of blades 13 are strongly pushed in the rotational direction by the lift force by the Coanda effect, the rotation speed and torque of the water turbine rotor 6 are increased, and the power generation efficiency is higher than that of the hydroelectric generator of each of the embodiments. improves.
In addition, without forming an enlarged diameter part in the upstream and downstream end part of the water conveyance duct 14, this may be made into a straight cylindrical thing.

12 and 13 show a sixth embodiment of the hydroelectric power generation apparatus according to the present invention. In addition, the same code | symbol is attached | subjected to the member similar to the Example mentioned above, and the detailed description is abbreviate | omitted. The hydroelectric power generation device 1 of the sixth embodiment is installed at a position where a slight height difference is formed in the riverbed 15 of the river, or at a position where the riverbed 15 is excavated slightly to form a height difference.

That is, for example, in the riverbed 15 at the location where the height difference in the river is formed, the water conduit 16 in which the upstream side is the downward inclined portion 16A and the downstream side is the horizontal portion 16B is submerged in the water flow, It is fixed in an immobile state by a plurality of

anchor members

17, 17 fixed to both side surfaces in the longitudinal direction so as to be separated from the riverbed 15, and the hydraulic power unit 1 is mounted on the horizontal portion 16 B of the water guiding duct 16. A rotor support case 5 similar to the example, a water turbine rotor 6, and a plurality of water flow deflecting plates 7 having a bent portion 7A at the tip end portion are installed in the duct.
Note that the reason for placing the water guiding duct 16 away from the riverbed 15 is to prevent mud water, gravel, and the like from flowing into the water guiding duct 16.

At the opening on the upstream side of the water guiding duct 16, a filter 18 for preventing foreign matter in the water flow from flowing into the water guiding duct 16 is detachably attached by a screw or the like.
The rotor support case 5 is fixed to the inner surface of the horizontal portion 16B of the water conduit 16 by fixing the outer end portions of the pair of

case support arms

19, 19 whose inner end portions are fixed to both side surfaces thereof. It is located in the center of the house. The water guiding duct 16 also serves as a support of the present invention for supporting the rotor support case 5.

The lower end portion of the long case support rod 20 is fixed to the front upper portion of the rotor support case 5 and penetrates the upper surface of the horizontal portion 16B of the water duct 16 to extend upward. The upper end portion is supported by an upper surface plate 21A of the generator support base 21 having a U-shape in a front view downward direction, whose lower end is fixed to the upper surface of the water guiding duct 16.

A generator 9 is fixed to the upper surface plate 21A of the generator support base 21. This generator 9 is linked to transmission means accommodated in the case support rod 20 as in the embodiment described above, and the case support is supported. It is connected to the upper end of a vertical transmission shaft that is rotated in the crucible 20. As shown in FIG. 13, when the rotor shaft 11 rotates clockwise with the water rotor 6 in a front view, the generator 9 is driven to generate electric power.
In addition, the height of the generator support 21 is set to an upper and lower dimension sufficiently separated from the water surface so as to prevent the generator 9 from being submerged.

Also in the hydroelectric power generation apparatus according to the sixth embodiment, the water guiding duct 16 is installed on the small riverbed 15 having a height difference in the river, and the rotor support having the plurality of water flow deflecting plates 7 on the outer peripheral surface in the horizontal portion 16B of the water guiding duct 16 The case 5 and the water turbine rotor 6 are accommodated. Therefore, the water flow flowing in the water conveyance duct 16 in an orderly manner is deflected in the direction opposite to the rotation direction of the water turbine rotor 6 by the plurality of water flow deflection plates 7, and the plurality of blades 13 rotate in the rotation direction by the Coanda effect. It is strongly pressed by
Therefore, even if the flow is a gentle river, the rotational speed and torque of the water turbine rotor 6 are increased, and the power generation efficiency is improved.

In the hydroelectric power generation apparatus of the sixth embodiment, the water guiding duct 16 is omitted, and the support frame 3 and the like as in the first embodiment are installed on the riverbed 15, and the support frame 3 and the like support the case And the generator 9 can be supported.
Further, in the case of the water guiding duct 16 which is entirely inclined downward and does not have the horizontal portion 16B, the rotor support case 5 having the water flow deflector 7 and the water turbine rotor 6 in the downward inclined portion 16A It can also be housed diagonally along the 16A.

The present invention is not limited to the above-described embodiments, and various modifications and changes as described below can be made without departing from the scope of the present invention.
In the first to sixth embodiments, although the hydroelectric generator is supported by the support frame 3 installed in the water channel 2, it is installed so as to simply straddle the water channel 2 without using the support frame 3. The hydroelectric generator may be suspended by a support.

Further, although the number of the blades 13 of the water turbine rotor 6 is four in each of the above embodiments, the number of blades 13 is not limited to this, and it is needless to say The present invention can also be applied to a hydroelectric generator using a propeller-type water turbine rotor provided with a mold blade.
When using a water turbine rotor provided with a drag type blade, the water flow deflection plate 7 may be inclined in the same direction as the rotation direction of the water turbine rotor, and even in this way, the swirling water flow deflected by the water flow deflection plate 7 Since the drag type blade is pushed in the rotational direction by this, the water turbine rotor can be accelerated to increase its rotational speed and torque.

Furthermore, in each of the above embodiments, the generator 9 linked to the water turbine rotor 6 is installed outside the rotor support case 5, but the generator is accommodated in the rotor support case 5 and the generated power is You may take out outside via an electrical wiring.

FIG. 14 and the subsequent figures show an embodiment in which the hydroelectric power generation apparatus 1 is disposed in the flowing water of the water fall channel device 22. The same members as in the previous example are given the same reference numerals and the explanation thereof is omitted. As shown in FIG. 14, the head channel 22 communicates with the water storage tank 23 having a funnel-shaped lower portion and a drainage hole 23A on the lower surface and the drainage hole 23A, and the upstream end is the lower surface of the water storage tank 23 The hydropower generator 1 is attached to the reverse L-shaped water pipe 24 connected to the above, and the upper part of the water pipe 24.

The water conduit 24 comprises a vertical pipe portion 24A and a horizontal pipe portion 24B whose lower end is connected to the ground G at the lower end so that the upper end of the upward elbow is detachably connected to the lower end thereof. Is attached to the vertical pipe portion 24A.
The height of the water from the lower end of the water storage tank 23 to the horizontal pipe portion 24B is, for example, 1 to 3 m in consideration of the installation space and the like of the drop channel device 22. Water flowing out of the lower end of the horizontal pipe portion 24B flows down to a canal, a river or the like via a water channel (not shown).

An upper lid 25 having a wire mesh for covering relatively large dust and the like from entering is disposed on the opening surface of the upper end of the water storage tank 23. In addition, a filter 18 for capturing fine dust and the like that has entered the water storage tank 23 is detachably attached to the upper end portion of the vertical pipe portion 24A.

In the water storage tank 23, for example, water drawn in from an irrigation canal, a drainage channel, a river, a lake, a reservoir, a reservoir, a dam, etc. is stored via the water supply pipe 26. The amount of water supplied to the water storage tank 23 is adjusted, for example, by a sluice valve (not shown) for flow rate adjustment provided at the water intake port of the water supply pipe 26, and the stored water is almost full It is supposed to be kept

The water storage tank 23 and the water conduit 24 are stably supported by the ground G at the lower end and by a plurality of (for example, three or more) vertical support rods 27 whose upper ends are fixed to the outer peripheral surface of the funnel-shaped portion of the water storage tank 23 It is held.

The hydroelectric power generation device 1 is disposed in a central portion near the downstream side of the vertical pipe portion 24A, and has a hollow rotor support case 5 long in the water flow direction (vertical direction), and the lower end of the rotor support case 5 in plan view. The water turbine rotor 6 rotates in the clockwise direction.
Immediately above the water turbine rotor 6, a plurality of (eight in the present embodiment) water flow deflection plates 7 fixed to the outer peripheral surface in the longitudinal direction (vertical direction) of the rotor support case 5 and the upper side of the rotor support case 5 The horizontal hollow transmission shaft receiving arm 29 is supported by a mounting bracket 28 whose left end is fixed to the right side and the right side passing through the vertical pipe 24A is fixed to the right side of the vertical pipe 24A. , And a generator 9 attached to the mounting bracket 28 and linked to the water turbine rotor 6 to generate electric power.

As shown in FIG. 14, the upper outer peripheral surface of the rotor support case 5 is vertical by the transmission shaft accommodation arm 29 and three horizontal case support arms 15 fixed to the inner surface of the vertical pipe portion 24A. It is stably and well supported by the pipe portion 24A.
Although not shown, the transmission shaft receiving arm 29 and the case support arm 19 have a fish-shaped cross section in side view, which has a thick upper portion and gradually decreases downward, and passes through them. The water flow is made to accelerate.

The rotor support case 5 has a tuna-like shape with a large diameter at the top and a gradually smaller diameter toward the bottom, and the water flow from the top toward the rotor support case 5 is shaped like a fish in the rotor support case 5 The velocity of the water flowing fast along the lower side and passing near the base of the blade 13 described later in the water turbine rotor 6 is increased.

Inside the rotor support case 5, a rotor shaft 11 having a lower end protruding from the lower end of the rotor support case 5 and directed in the vertical direction (water flow direction) is rotatably supported and accommodated by a bearing (not shown). .

The water turbine rotor 6 has a hub 12 fixed to the lower end portion of the rotor shaft 11 and a plurality of (four in the present embodiment) lift-type blades (the followings are fixed to the hub 12). And 13). The hub 12 and the blade 13 are made of, for example, a synthetic resin (including a fiber reinforced synthetic resin), a light metal such as aluminum (including an alloy thereof), or a metal material such as stainless steel or titanium.

The upper end portion of the rotor shaft 11 is a transmission means (two bevel gears meshing with rotating axes orthogonal to each other), and a horizontal transmission shaft (not shown) rotated in the transmission shaft receiving arm 29 by the transmission means The generator 9 is driven to generate electric power by rotating the rotor shaft 11 in a counterclockwise direction in plan view with the water turbine rotor 6 in cooperation with the generator 9 via the.

Each blade 13 is the same as that shown in FIGS. As the water turbine rotor 6, the rotor support case 5 in FIG. 7 is vertically oriented, and the water turbine rotor 6 is positioned downstream.

Thus, when each blade 13 receives a deflected water flow from above, the water turbine rotor 6 rotates counterclockwise in plan view by the reaction force (thrust) acting on each blade 13 in the rotational direction.
Further, since the upstream direction inclined portion 13A is formed at the tip end portion of each blade 13, when the water turbine rotor 6 rotates, along the inclined surface 13C inclined to the rear side in the rotational direction, from the base end to the centrifugal direction Since a part of the water stream to be discharged is captured by the upstream inclined portion 13A and discharged in the oblique centrifugal direction, the reaction increases the thrust in the rotational direction of the blade 13, and the rotation speed and torque of the water turbine rotor 6 increase. Be enhanced.

As shown in FIG. 16 in an enlarged manner, the eight water flow deflection plates 7 described above have outer peripheral surfaces in the vertical direction of the rotor support case 9 between the transmission shaft accommodation arm 13 and the case support arm 15 and the water turbine rotor 10. In order to project in the radial direction and at a predetermined angle in the direction to accelerate the water turbine rotor 6, that is, in the direction opposite to the rotation direction of the water turbine rotor 6, with respect to the rotation axis of the water turbine rotor 6. The end is fixed. The dimension in the axial direction (vertical direction) of each water flow deflection plate 7 is, for example, approximately 1/2 of the length in the vertical direction of the rotor support case 5, and the projection dimension in the radial direction is, for example, a blade at the tip end The length is extended to the vicinity of the maximum chord length portion 13B of thirteen.
The projection size of each water flow deflection plate 7 in the radial direction may be a length extending to the tip of the blade 13 or a length exceeding the tip.

A bent portion 7A bent in the direction opposite to the rotation direction of the water turbine rotor 6 is formed at the tip of the water flow deflection plate 7. When the rotor support case 5 is formed of synthetic resin or the like, the water flow deflection plate 7 can be integrally formed therewith.

In the present embodiment, the inclination angle of each water flow deflection plate 7 with respect to the rotation axis of the water turbine rotor 6 is approximately 10 °, but this inclination angle ranges, for example, from 5 ° to 45 ° depending on the number of water flow deflection plates 7 It is set within.
That is, as the number of the water flow deflectors 7 increases, the inclination angle decreases and the number decreases, so that the water flow resistance is not increased by the water flow deflector 7 and the velocity of the deflected water flow toward the water turbine rotor 6 is not reduced. It is preferable to make the inclination angle gradually larger according to If the inclination angle is increased, the water flow deflection effect is increased, but the water flow resistance is increased and the flow velocity toward the water turbine rotor 6 is decreased, so it is preferable not to exceed 45 °. The number of the water flow deflection plates 7 is, for example, 3 to 16, preferably 6 to 12 in accordance with the magnitude of the head of the water flow in order to exert the water flow deflection effect without lowering the flow velocity. That's good.

As in the case of the above-mentioned hydraulic power generator, on the outer peripheral surface of the rotor support case 5 positioned upstream of the water turbine rotor 6, a plurality of water flow deflection plates 7 projecting in the radial direction with respect to the rotation axis of the water turbine rotor 6 When it is fixed by inclining in the direction opposite to the rotation direction, as shown by the arrows in FIG. 14 and FIG. 16, the water flowed out from the water storage tank 23 accelerates the water turbine rotor 6 by the eight water flow deflection plates 7 , I.e., it is deflected to turn in the direction opposite to the rotation direction of the water turbine rotor 6.

The deflected water flow after passing through each water flow deflection plate 7 strikes a wide range from the base end of the plurality of blades 13 to the vicinity of the maximum chord length 13B, and the waters of the deflected water flows along each blade 13 and the Coanda effect The lift in the rotational direction acting on the blade 13 is increased.
As a result, each blade 13 is strongly pressed in the rotational direction (counterclockwise direction in plan view), and turning energy is added to each blade 13 in addition to the drop energy of the water, and their synergistic effect causes the water turbine rotor 6 to Speed and torque are increased.

Further, at the tip end portion of the blade 13, an upstream-facing inclined portion 13A that inclines toward the upstream direction is provided. Therefore, the water stream which is going to escape from the tip of the blade 13 in the centrifugal direction is captured by the upstream inclined portion 18A and flows out in the diagonal direction opposite to the rotation direction, and the tip of the blade 13 It is pushed in the rotational direction, and the rotational efficiency of the water turbine rotor 6 is enhanced.
Therefore, the height of the water conduit 3 is limited by the installation space of the water storage tank 23, etc., and even when the drop (position) energy of water is small, the synergistic effect of the water flow deflector 7 and the upstream inclined portion 13A Thus, the rotation speed and torque of the water turbine rotor 6 can be increased to improve the power generation efficiency.

Furthermore, since the bent portion 7A facing in the direction opposite to the rotation direction of the water turbine rotor 6 is formed at the tip of the water flow deflection plate 7, the water flow deflected by each water flow deflection plate 7 flows in the centrifugal direction. As a result, the amount and amount of water deflected in the direction opposite to the rotational direction of the water turbine rotor 6 are increased.
As a result, the inclined surface 13C from the base end to the vicinity of the maximum chord length 13B in the plurality of blades 13 is strongly pushed in the rotational direction by the lift force by the Coanda effect, the rotation speed and torque of the water turbine rotor 6 become large, Efficiency is further improved.

FIG. 17 shows a modification of the water flow deflector 7. In this example, each water flow deflector 7 is curved in a curved shape so that the water flow is curved in the direction opposite to the rotation direction of the water turbine rotor 6. It is
In this case, the water flow deflected in the direction opposite to the rotation direction of the water turbine rotor 6 by the water flow deflection plates 7 is likely to become a swirling flow, and the plurality of blades 13 are effectively pushed in the rotation direction. The rotational speed and torque of the rotor 6 are increased.
In addition, the bending part 7A currently formed in the front-end | tip part of each water flow deflection | deviation plate 7 may be abbreviate | omitted, and it may be set as the water flow deflection | deviation plate 7 which only makes plate shape.

FIG. 18 is a longitudinal side view of a hydraulic power generation system according to an eighth embodiment. In addition, the same code | symbol is attached | subjected to the member similar to the Example mentioned above, and the detailed description is abbreviate | omitted.

In the same manner as in the seventh embodiment, the hydroelectric generator 1 of the eighth embodiment arranges the rotor support case 5 horizontally near the downstream side of the horizontal pipe portion 24B in the water conduit 24 of the down flow water channel device 22.
The generator 9 is fixed to the upper surface of the upward transmission shaft receiving arm 29 attached to the upper surface of the rotor support case 5 via a mounting bracket 28.

Also in this hydraulic power generation device 1, the water flow that has flowed into the horizontal pipe portion 24B is deflected by the plurality of water flow deflection plates 7 so as to turn in the direction opposite to the rotation direction of the water turbine rotor 6. Since the inclined surface 13C of the blade 13 is pushed in the rotational direction by the lift force by the Coanda effect, the number of rotations and the torque of the water turbine rotor 6 are increased. Therefore, even when the water drop from the water storage tank 23 to the horizontal pipe portion 24B can not be increased, the power generation efficiency can be improved.

FIG. 19 is a longitudinal side view of a hydraulic power generation system according to a ninth embodiment of the present invention. The same members as those in Examples 7 and 8 described above are denoted by the same reference numerals, and the detailed description thereof will be omitted.

The hydroelectric generator according to the ninth embodiment is provided with a drainage hole 23A to which the filter 18 is attached at the lower end portion of the outer peripheral surface of the water storage tank 23 installed on the ground G, and is inclined in the vertical direction at the lower part of the water storage tank 23 The upstream end of the water pipe 24 having a small head difference is connected to communicate with the drainage hole 23A, and the hydraulic power unit 1 similar to the eighth embodiment is attached to the downstream end of the water pipe 24. It is.

Also in the hydroelectric generator of this ninth embodiment, the water flow flowing in the water conduit 24 is deflected by the plurality of water flow deflection plates 7 so as to turn in the direction opposite to the rotation direction of the water turbine rotor 6, The 13 inclined surfaces 13C are pushed in the rotational direction by the lift force by the Coanda effect.
Therefore, even if the water guiding pipe 3 has a small head difference and a slow water flow velocity, the rotation speed and torque of the water turbine rotor 6 are increased, and the power generation efficiency is improved.

FIG. 20 is a vertical cross-sectional side view of a hydraulic power generation system according to a tenth embodiment of the present invention, which is an example in which the hydraulic power generation system 1 is installed, for example, in a water channel 30 for agriculture.
The same members as those in each embodiment described above are denoted by the same reference numerals, and the detailed description thereof will be omitted.

In this embodiment, the weir 30 is provided with a weir plate 20 for blocking the water flow, raising the water level on the upstream side, and forming a head difference with the water flow on the downstream side. The hydroelectric generator 1 is attached to the side surface (left side surface of the figure).
The anchor plate 31 and the hydraulic power generation device 1 are integrally connected in advance, and in a state where they are unitized, they can be lifted and installed on the water channel 30 by a crane or the like. To that end, a plurality of lifting brackets 32 such as eyebolts that can be lifted by hooking a crane or the like are attached to the central portion of a later-described later-described later holding plate 34 fixed to the upper end of the holding plate 31. .

The upper and lower dimensions of the weir plate 31 are formed substantially the same as the depth of the canal 30 so that the lower end reaches the bottom of the canal 30, and the width dimension is also formed substantially the same width as the canal 30.

A plurality of triangular reinforcing plates are arranged at the upper end of the gutter plate 31 so as to cross the water channel 30 and are straddled on the upper surface thereof, and a gutter plate holding plate 34 fixed by a plurality of

fasteners

33 and 33 is arranged in the width direction. It is fixed with 34A, and the weir plate 31 is held immobile in the water channel 30 by the weir plate holding plate 34 and the reinforcing plate 34A.

In the upper part of the weir plate 31, a water conduction hole 35 is provided to allow the upstream water whose water level has been raised to flow out to the downstream side via a water conduction pipe 24 described later. A mesh-like filter 18 for preventing foreign matter from flowing into the water passage 35 is detachably attached to the upper portion of the upstream wall surface of the weir plate 31 by a plurality of

holders

36, 36.

A water passage hole 37 for adjusting the water level on the upstream side is provided at the lower end portion of the weir plate 31, and a part of the upstream water blocked by the weir plate 31 is passed through the water passage hole 37. By draining to the downstream side, it is possible to prevent the water level on the upstream side from rising too much and overflowing from the canal 30. The size and the number of the water flow holes 37 are appropriately determined depending on the depth, the flow rate, and the like of the water channel 30.
In addition, instead of providing such a water flow hole 37, the lower end of the weir plate 20 may be separated from the bottom surface of the water passage 30, and a gap formed between them may be a water flow hole. When the water volume of the canal 30 is small, such a water flow hole 37 may be omitted and the entire upstream water flow may be blocked by the weir plate 31.

In the upper part of the wall surface on the downstream side of the weir plate 31, a water conduit 24 for flowing out the upstream water, which raised the water level of the irrigation channel 30, to the downstream side is attached in communication with the water conduit 35 There is.
The upper elbow pipe portion 24C bolted to the weir plate 31 with a flange so that the right end upper portion of the water conduit 24 opens in the upstream direction of the irrigation conduit 30 and the open end communicates with the water conduit 34; A vertical pipe portion 24D continuous with the downward opening of the pipe portion 24C, and a lower elbow pipe portion 24E connected to the lower end of the vertical pipe portion 24D via a flange and having a lower left end opening in the downstream direction of the irrigation channel 30 ing.

As in the eighth embodiment, the rotor support case 5 is disposed in the middle portion of the vertical pipe portion 24D so as to face the vertical direction, and the water turbine rotor 6 at the lower end is rotated counterclockwise in plan view. The plurality of water flow deflectors 7 are attached to be inclined in the direction opposite to the rotation direction of the water turbine rotor 6. The generator 9 is separated from the water surface on the downstream side so as not to be submerged.

Also in this hydraulic power generation device 1, when the upstream water blocked by the weir plate 31 flows into the water conduit 24, the water flow is in the rotational direction of the water turbine rotor 6 by the plurality of water flow deflection plates 7 in the rotor support case 5. It is deflected to turn in the opposite direction.

The deflection water flow causes the blades 13 to be pushed in the rotational direction by the lift force by the Coanda effect, and turning energy is added to each blade 13 outside the drop energy of the water, so the vertical dimension of the water conduit 24 is made large. Even if the head is not increased so much, the rotational speed and torque of the water turbine rotor 6 are increased, and the power generation efficiency is improved.

In addition, even when it is difficult to form a head of water, as in the case of the canal 30, the water flow is blocked by the weir plate 31 to raise the water level on the upstream side, and a head is formed in the canal 30 to generate electricity. Therefore, the energy of the water stream to be used is large and the power generation efficiency is high, as compared with the hydroelectric power generation using the naturally flowing water stream of the canal 30.

Furthermore, because the canal 30 partially blocks the canal 30 and raises the water level to form a head, water volume in the canal 30 is small and the water rotor in the water conduit 24 is low even if the water level is low. Can efficiently rotate and enhance power generation efficiency.
In addition, since a drop can be formed in the canal 30 simply by holding the canal 30 by the weir plate 31, a large-scale civil engineering work for constructing a concrete weir and the like as in the prior art becomes unnecessary. It can be reduced.

In the tenth embodiment, the lower portion of the lower elbow pipe portion 24E can be extended downstream, and the rotor support case 5 can be installed in the same manner as in FIG. In this case, the generator 9 may be covered by a waterproof cover or the like, or the transmission shaft accommodation arm 29 may be extended upward to separate the generator 9 from the water surface.

FIG. 21 is a vertical cross-sectional side view of a hydraulic power generation system according to an eleventh embodiment of the present invention, which is another embodiment in which the hydraulic power generation system 1 is installed in the water channel 19. In addition, the same code | symbol is attached | subjected to the member similar to a front example, and the detailed description is abbreviate | omitted.

In the eleventh embodiment, the inclined water conduit 38 which inclines downward in the downstream direction of the water channel 30 is attached to the upper part of the gutter plate 31 similar to the tenth embodiment, and the middle portion of the inclined water conduit 38 The rotor support case 5 similar to that of the embodiment is installed so that the generator 14 is not submerged.

Also in the hydraulic power generation device 1 of the eleventh embodiment, when the water blocked by the weir plate 31 flows into the inclined water conduit 38, the water flow is rotated by the plurality of water flow deflection plates 7 in the rotor support case 5. Because it is deflected to turn in the opposite direction to the direction, even when the hydroelectric generator 1 is installed in a water channel 30 where it is difficult to increase the water drop, the rotational speed and torque of the water turbine rotor 6 are increased, Efficiency can be improved.

In the hydroelectric generator 1 according to the tenth embodiment and the eleventh embodiment, the water flow of the irrigation channel 30 is not completely stopped by the weir plate 31, but the upstream water with the water level raised is the water conduit 24, As it flows downstream via the water supply holes 38 and the water holes 37, there is no risk of affecting the water right of the downstream side.

In the tenth and eleventh embodiments, when the water channel width of the irrigation channel 30 is relatively large, the plurality of hydroelectric power generators 1 can be arranged in the width direction on the weir plate 31 having a large width dimension. Power generation efficiency can be improved.
The hydroelectric power generation device 1 according to the tenth and eleventh embodiments can be installed in water and sewage, industrial waterways, rivers with a relatively small river width, and the like in addition to the agricultural waterways 30.

The present invention is not limited to the above-described embodiments, and various modifications and changes as described below can be made without departing from the scope of the present invention.
Although the number of the blades 13 of the water turbine rotor 6 is four in each of the above embodiments, the number of the blades 13 is not limited to this, and it is needless to say that a water turbine provided with a lift type blade in which the upward inclined portion 13A is not formed at the tip end The present invention can also be applied to a hydroelectric generator using a rotor.

Further, as shown in FIG. 22, the present invention can be applied to a propeller type reaction water turbine rotor provided with a plurality of drag type blades 39, that is, a hydraulic power generation apparatus using the drag type water turbine rotor 40. When such a drag-type water turbine rotor 40 is used, the direction in which the drag-type water turbine rotor 40 is accelerated with respect to the rotation axis of the water flow deflection plate 7 with respect to the rotation axis of the drag-type water rotor 40. It may be inclined in the same direction as the rotation direction.
Even in this case, since the drag type blade 39 is pushed in the rotation direction by the swirling water flow deflected by the water flow deflection plate 7, the drag type water turbine rotor 40 is accelerated to increase its rotation speed and torque. it can.

In each of the above embodiments, the generator 9 is installed outside the rotor support case 5 and the

water conduits

24 and 38. However, the generator 9 is accommodated in the internal space of the rotor support case 5 and the generated electric power is It may be taken out to the outside through the electrical wiring inserted in the case support arm 19.

1 Hydroelectric generator 2 Water channel 3 Support frame (support)
Reference Signs List 3A post 3B lower cross section 3C upper surface plate 4 fixing member 5 rotor support case 6 water rotor 7 water flow deflection plate 7A bent portion 8 case hanging support 9 generator 10 inclination bracket 11 rotor shaft 12 hub 13 lifting blade 13A upstream direction Inclined portion 13B Maximum chord length 13C Inclined surface 14 Water conducting duct 14A Opening 15 River floor 16 Water conducting duct 16A Downward inclined portion 16B Horizontal part 17 Anchor member 18 Filter 19 Case support arm 20 Case suspension support 21 Generator support 21A Top plate 22 headwater channel device 23 water reservoir 23A drainage hole 23B upper lid 24 water conduit 24A vertical pipe portion 24B horizontal pipe portion 24C upper elbow pipe portion 24D vertical pipe portion 24E lower elbow pipe portion 25 upper cover 26 water supply pipe 27 vertical support rod 28 mounting bracket 29 Transmission shaft housing arm 30 Water channel 31 Base plate 32 Lifting bracket 33 fixed 34 sheathing board holding plate 34A plate 35 water guide hole 36 holder 37 water passage holes 38 inclined conduit 39 drag type blades 40 drag-type hydraulic turbine rotor G ground

Claims

An elongated rotor support case supported by a support so as to be disposed in the water flow;
A longitudinally oriented rotor shaft rotatably supported on the rotor support case;
A generator linked to the rotor shaft and generating electricity by rotation of the rotor shaft;
A water turbine having a plurality of blades mounted at regular intervals in the circumferential direction at one end on the downstream side of the rotor shaft and receiving a flow of water and rotating in a fixed direction;
It projects radially outward on the outer peripheral surface in the longitudinal direction of the rotor support case, and is fixed at a predetermined angle with respect to the rotation axis of the water rotor, and deflects the water flow in the direction to accelerate the water rotor. And a plurality of water flow deflection plates that can be driven.
The hydroelectric power generation apparatus according to claim 1, wherein a bent portion for suppressing the flow of the water flow in the centrifugal direction is formed at the front end portion of the water flow deflection plate.
The hydroelectric power generation apparatus according to claim 1 or 2, wherein the water flow deflection plate is curved in a curved shape so that the water flow is curved and flows toward the water turbine rotor.
The upstream water-receiving surface of the blade is an inclined surface that is inclined toward the rear in the rotational direction so that the inclination angle gradually increases toward the proximal end, and the chord length of the blade is from the proximal end The blade is of a lift type having a gradually increasing size toward the tip and a blade having a slope which is inclined in the upstream direction at the tip starting from the largest chord length, and the projection of the water flow deflection plate in the radial direction The hydroelectric generator according to any one of claims 1 to 3, wherein a dimension of the water flow deflection plate is such that a tip end portion of the water flow deflection plate extends to the vicinity of the maximum chord length portion.
The upstream water-receiving surface of the blade is an inclined surface that is inclined toward the rear in the rotational direction so that the inclination angle gradually increases toward the proximal end, and the chord length of the blade is from the proximal end The blade is of a lift type having a gradually increasing size toward the tip and a blade having a slope which is inclined in the upstream direction at the tip starting from the largest chord length, and the projection of the water flow deflection plate in the radial direction The hydroelectric generator according to any one of claims 1 to 3, wherein the dimension of the water flow deflector is such that the tip of the water flow deflector extends to the middle of the blade.
The number of the water flow deflection plates is 3 to 16 and the inclination angle of each water flow deflection plate with respect to the rotation axis of the water turbine rotor is smaller as the number of water flow deflection plates is larger and does not exceed 45 degrees as the number is smaller. The hydroelectric generator according to any one of claims 1 to 5, characterized in that the size is increased within the range.
The hydroelectric generator according to any one of claims 1 to 6, wherein the rotor support case, the water turbine rotor, and the water flow deflection plate are surrounded by a cylindrical water guiding duct disposed in a water flow.
The hydroelectric generator according to any one of claims 1 to 7, wherein the rotor support case has a fish shape having a large diameter on the upstream side and a gradually smaller diameter on the downstream side.
The rotor supporting case long in the water flow direction is supported by the support in the water in the water guiding pipe which causes the stored water in the water storage tank of the head channel device or the flowing water in the water channel to flow downward using the head. In the longitudinal direction on the downstream side of the outer peripheral surface of the water turbine, and is fixed at a predetermined angle to the rotation axis of the water turbine rotor so that the water flow in the water guiding tube is accelerated in the water turbine rotor The hydroelectric power generation apparatus according to any one of claims 1 to 6, further comprising a plurality of water flow deflection plates that can be deflected.
The water channel of the head channel device is an irrigation channel, and in this irrigation channel a weir plate is installed to raise the water level of the upstream water flow to form a head between the downstream water flow, and above the weir plate The upper end portion of the water conduit is connected to a water conduction hole formed at the upper portion of the weir plate, which causes the upstream water whose water level has been raised to flow downstream. The hydraulic power unit according to 9.