WO2016147938A1

WO2016147938A1 - Water wheel device

Info

Publication number: WO2016147938A1
Application number: PCT/JP2016/057060
Authority: WO
Inventors: 鈴木　政彦
Original assignee: 株式会社ベルシオン
Priority date: 2015-03-13
Filing date: 2016-03-08
Publication date: 2016-09-22
Also published as: TW201641813A; CN107407252A; KR20170128353A; CN107407252B

Abstract

The present invention provides a water wheel device that is easily installed in a waterway, etc. and that can produce efficient, stable electric power. A water wheel device 1 that is configured such that a suspension support body 4 is provided so as to stand on an upper surface of a tall section of a water wheel housing 3 that is provided with a rotor 11, such that the water wheel housing 3, which is tubular, is horizontally suspended, at a distance that is no greater than the height thereof, via the suspension support body 4 from a horizontal bottom-part lower surface 2A of a water wheel suspension body 2 that floats at a water surface, and such that surges in water current that flow up over the upper surface of the water wheel housing 3 are deflected by the bottom-part lower surface of the water wheel suspension body 2 and made to flow on.

Description

Watermill equipment

The present invention relates to a water turbine apparatus that is easy to install in a small water channel and has high power generation efficiency.

A hydroelectric generator in which a water turbine is suspended by a float is disclosed in Patent Document 1 and is publicly known.

JP 2012-132335 A

In the hydroelectric generator described in Patent Document 1, a duct is attached to the front part of the rotor, and the fluid flowing along the inner and outer peripheral surfaces of the duct is applied to the inclined part of the blade to increase the rotation efficiency.
If the water turbine casing of this hydroelectric generator is submerged in running water, the fluid flowing along the upper surface from the front of the turbine casing rises upward at the top of the turbine casing, and the flow velocity of that portion decreases. , Rotor rotation efficiency is difficult to increase.
Also, in order to install a hydroelectric generator in a small waterway, it is common to bridge between both side walls of the waterway and suspend the hydroelectric generator on this. It takes time and effort to suspend and install the hydroelectric generator.
An object of the present invention is to provide a water turbine device that can be easily installed in a water channel and can efficiently generate power in a small water channel or the like.

The specific contents of the present invention are as follows.

(1) A suspension support body is erected on the upper surface of the high-size portion of the water turbine casing equipped with a rotor, and is cylindrical on the lower bottom surface of the horizontal bottom of the water wheel suspension body floating on the water surface via the suspension support body. The water turbine housing is hung horizontally with an interval within the height of the water turbine so that the rise of the water flow that rides on the top surface of the water turbine housing is suppressed at the bottom bottom surface of the water turbine suspension and passes therethrough. Watermill equipment.

(2) The water wheel device according to (1), wherein the water wheel suspension is configured such that the bottom lower surface behind the rotor is kept horizontal and has a length at least equal to or larger than the diameter of the rotor from the rear part of the blade.

(3) The water wheel device according to (1) or (2), wherein the water wheel suspension is formed with a downward protrusion protruding downward at a bottom of a side end.

(4) The water wheel device according to (3), wherein the water wheel suspension is provided with a weight embedded in a bottom portion of a downward projection.

(5) The water wheel device according to (1), wherein the water wheel suspension is detachably connected to the left and right sides of the main body.

(6) The watermill device according to (5), wherein each of the side appendages is formed with a downward protrusion in which an outer lower end protrudes downward from an inner side.

(7) The watermill device according to (6), wherein a weight is embedded in the bottom portion of each downward protrusion.

(8) A tunnel portion is formed by a pair of side wall portions and a bottom plate portion on the lower surface of both sides of the water turbine suspension, and the vertical cross-sectional shape of the bottom plate portion extends from the rear end close to the turbine casing to the front end portion. The watermill device according to (1), wherein the inclined surface gradually descends, and the front portion of the bottom plate portion is wide in front view of the tunnel portion and gradually narrows inward.

(9) The watermill device according to (8), wherein the vertical side surface shape of the bottom plate portion in the tunnel portion is a curved surface gradually descending from the highest portion to the rear end, with the upper surface of the front edge being spherical.

According to the present invention, the following effects can be obtained.

The watermill device according to the above (1) is provided with a cylindrical waterwheel casing disposed on a waterwheel suspension through a suspension support with an interval within the height of the watermill casing. Since the suspension support is fixed to the upper surface of the large part of the high size, the water flow that passes while rising along the upper surface of the water turbine housing is prevented from rising at the bottom lower surface of the water turbine suspension, And the rotor can be rotated efficiently.
In addition, when the suspension support is fixed to the upper surface of the large and large portion of the water turbine casing, the water flow immediately before it is pressurized, the water pressure increases, and it passes rearward at high speed, and the rotational efficiency of the rotor is increased. Enhanced.
In addition, the water turbine device can be installed simply by dropping the suspension of the water turbine into the water channel as it is, and anchoring the water wheel to the water channel with a tether or the like, so that the work efficiency is excellent and the work cost can be reduced.

In the watermill device according to the above (2), the bottom surface behind the rotor in the waterwheel suspension is kept horizontal, and the length from the rear part of the blade is at least the diameter of the rotor. Even if air enters the bottom surface of the suspension of the water turbine from the rear and the water pressure changes, the water flow hitting the rotor does not change, and there is no possibility that the rotational speed of the rotor decreases.

In the watermill device described in (3) above, since the downward protrusions are formed at both side ends of the bottom surface of the waterwheel suspension, rolling due to waves is alleviated.

In the watermill device described in (4) above, since the weight is embedded at the bottom of the downward projection, the rolling due to the waves is alleviated.

The watermill device according to the above (5) is excellent in workability of transportation and installation when the side additive is not connected to the left and right sides of the main body of the waterwheel suspension so as to be detachable. By connecting side appendages according to the width of the channel at the site, the rolling of the water wheel suspension on the water is alleviated and the horizontal stability of the water turbine device is maintained even when the waves increase. Can do.

The watermill device according to the above (6) is formed with downward protrusions on both sides of the bottom surface of the side appendage connected to both sides of the main body of the waterwheel suspension. Can reduce the rolling caused by waves.

In the watermill device described in (7), since the weight is embedded in the bottom of each downward projection, it is difficult to roll and can maintain stability.

In the water turbine apparatus according to (8), a tunnel portion is formed by a pair of side wall portions and a bottom plate portion on the lower surfaces of both side portions of the suspension body of the water turbine, and the vertical side surface shape of the bottom plate portion is formed close to the water turbine casing. It is an inclined surface that gradually descends from the end to the front end, and in the front view of the tunnel part, the front part of the bottom plate part is wide and gradually narrows inward, so the flow rate is slower and heavier than the upper layer flow in the water channel Since the lower layer flow, which is applied with force, can be crushed at the bottom plate portion and mixed with the upper layer flow and applied to the blade, the rotational torque of the rotor can be increased.

In the water turbine device according to the above (9), since the vertical side surface shape of the bottom plate portion in the tunnel portion is a spherical surface on the front edge upper surface and gradually descends from the highest portion to the rear end, The water flow hitting the front edge of the part can pass through the bottleneck between the lower surface of the water turbine suspension and the highest part of the bottom plate part with an increased flow velocity by the Coanda effect, and the rotational torque of the rotor can be increased.

It is a vertical side view of Example 1 of the watermill device of the present invention. It is the front view which looked at the watermill apparatus in FIG. 1 from the left. It is a front view of Example 2 of the watermill device of the present invention. It is a vertical side view of the watermill device in FIG. It is a front view of Example 3 of the watermill device of the present invention. It is a front view of Example 4 of the watermill device of the present invention. It is a vertical side view of Example 5 of the watermill device of the present invention. It is a front view of the watermill device in FIG. It is a vertical front view of Example 6 of the watermill device of the present invention. It is a vertical front view of Example 7 of the watermill device of the present invention. It is a vertical side view of Example 8 of the watermill device of the present invention. It is a front view of Example 8 of the watermill apparatus of the present invention. FIG. 12 is a plan view of the water wheel device in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 1, in the water turbine device 1 of the present invention, a long cylindrical water turbine casing 3 facing the front-rear direction from the bottom lower surface 2 A of the water turbine suspension 2 is interposed via the suspension support 4. It is suspended horizontally. The water wheel suspension 2 is arbitrarily formed from a metal or FRP hollow body, a ship shape, or a foamed resin molded body.

The bottom lower surface 2A of the water turbine suspension 2 is a horizontal surface that is long in the front-rear direction, and the front end surface of the water turbine suspension 2 is a curved surface that faces from the upper surface 2B to the lower rear direction, and is anchored at the front and rear ends of the upper surface 2B. A plurality of anchoring

hooks

5, 5 that connect the ropes 6 are fixed.

Inside the water turbine suspension 2, a storage battery 7, a controller (not shown), and the like are arranged.
The suspension support body 4 is long in the front-rear direction and flat in the left-right direction, the front edge is thick in the left-right direction, and is gradually formed thin toward the rear end, and is fixed to the highest portion of the water turbine casing 3. Yes.

A cord 9 for transmitting power from a generator 8 disposed in the turbine casing 3 to the storage battery 7 in the turbine suspension 2 is disposed inside the suspension support 4. The upper and lower ends of the suspension support 4 are connected to the water turbine casing 3 and the water turbine suspension 2 so as to be detachable.

The height of the suspension support 4 is within the maximum height of the water turbine casing 3. As a result, the distance between the bottom lower surface 2A of the water turbine suspension 2 and the center portion of the high dimension of the water turbine casing 3 is within the height of the water turbine casing 3, and the water flow passing through this space is between the low heights. By passing, the flow rate is increased.

The water turbine casing 3 is long in the front and rear direction, has a thick central portion, and is gradually formed narrower toward the front and rear end portions. The front end portion of the rotor shaft 10 that is horizontally supported inside the water turbine casing 3 is connected to the generator 8, and the rotor shaft 10 that protrudes rearward from the water turbine casing 3 has a rotor at the rear end portion. 11 is installed.
When the rotor 11 rotates due to the water flow, the generator 8 rotates to generate electricity. The rotor 11 may be attached to the front end portion of the water turbine casing 3 or a pair of front and rear may be attached.

The rotor 11 has a plurality of lift-type blades 13 (hereinafter simply referred to as blades) fixed to the peripheral surface of the hub 12 in the radial direction. The tip of the blade 13 is an inclined portion 13A that is inclined in the upstream direction.

The water turbine suspension 2 with the water turbine casing 3 fixed is floated on the water channel R, and the water turbine suspension 2 is tethered to the hook 15 of the suspension girder 14 installed between the both sides of the water channel R by the tether 6 and positioned. .
Depending on the length of the water wheel suspension 2, a plurality of suspension girders 14 such as every 1 m are installed.

The flowing water flowing along the peripheral surface of the water turbine casing 3 below the water surface hits the front surface of the blade 13, moves to the tip of the blade 13 by centrifugal force while rotating the blade 13, and hits the inclined portion 13A. While rotating in the direction indicated by the arrow B in FIG. 1, the blade 13 is rotated by reaction.

As shown in a front view in FIG. 2, the bottom lower surface 2 A of the water turbine suspension 2 is horizontal and wide, so that the water flow that hits the front surface of the water turbine suspension 2 enters under the water turbine suspension 2 and inevitably. It will be pressurized by the water turbine suspension 2, passes through a longer distance than the water turbine housing 3, and passes between the upper surface of the water turbine housing 3.

At this time, it hits the front surface of the water turbine casing 3, merges with the water flow passing through the upper surface protruding upward, passes through the bottleneck of the suspension support 4 part, increases the speed by the Coanda effect, hits the blade 13, and rotates. Increase efficiency.

In this case, since the distance between the rear end portion of the water turbine casing 3 and the bottom lower surface 2A of the water wheel suspension 2 is longer than the suspension support 4 portion, it is easy to come out rearward and diffuse rearward. Since the portion 13A captures the water flow diffusing in the centrifugal direction and becomes a rotational force, the rotational efficiency is increased.

As shown in FIG. 2, the water turbine device 1 configured as described above is suspended from a hanging girder 14 spanned on both sides of the water channel R by a mooring cable 6, and the bottom lower surface 2 A of the water turbine suspension 2 is provided. It is installed so as to be submerged horizontally.
Thereby, the workability | operativity which installs the watermill apparatus 1 improves.

In FIG. 1, the central portion of the water turbine casing 3 has a large diameter and is higher than the front and rear end portions. Therefore, the flowing water flowing down from the front flows along the peripheral surface shape of the water turbine casing 3 due to the Coanda effect, and rises from the front end portion to the central portion in the shape of arrow A. Will increase in volume, and will rise.

The rising of the flowing water is such that the water flow descending from the upstream diffuses in the centrifugal direction along the peripheral surface at the central portion of the water turbine casing 3, and the flow velocity flowing downstream inevitably decreases.
Therefore, the bottom lower surface 2A of the water turbine suspension 2 is made parallel to the axial center line S of the water turbine casing 3 and provided on the top of the water turbine casing 3, so that the water rise is suppressed at that portion, and the bottleneck It is possible to increase the flow rate in the downstream direction.

Moreover, as shown in FIG. 1, since the suspension support body 4 is provided in the center part which the water turbine housing 3 expanded greatly, in the upper surface of the water turbine housing 3, the surface of the water turbine housing 3 from the front part , The water flow rising to the center portion and the water flow colliding with the front surface of the suspension support body 4 will rise.

In the watermill device 1 of the present invention, the bottom surface 2A of the waterwheel suspension 2 suppresses the rising of the water flow passing through the top surface of the watermill housing 3, so that the amount of water at that portion increases and the water pressure increases. Then, along the side surface of the suspension support 4, it passes at the high speed.

Since the rear portion of the water turbine casing 3 has a smaller diameter than the central portion, the distance between the bottom portion lower surface 2A of the water turbine suspension 2 is larger than the central portion of the water turbine casing 3, and the suspension support Compared with the water pressure of the flowing water in the front part of the body 4, the rear part has a low water pressure.

Accordingly, the water flow passing along the side surface of the suspension support 4 passes at a high speed to the rear of the low hydraulic pressure of the water turbine casing 3, and the water flow at the front of the suspension support 4 is strongly strengthened backward due to the difference in water pressure. By sucking, the flow speed can be increased and the rotation efficiency of the rotor 11 can be increased.

The bottom surface 2A of the rear part of the water wheel suspension 2 is preferably as long as possible at the rear of the blade 13 at least as large as the diameter of the rotor 11. When this is short, when the water turbine suspension 2 shakes, if air enters the bottom lower surface 2A of the water turbine suspension 2 from the rear, the water pressure changes, and the flow velocity of the water flow coming from the front changes. Although the rotation speed of 11 may decrease, the fear is eliminated. *

FIG. 3 is a front view showing Example 2 of the water turbine device, and FIG. 4 is a longitudinal side view thereof. The same members as those of the previous example are denoted by the same reference numerals and description thereof is omitted.
In the second embodiment, a downward projecting portion 2 C that projects downward so as to surround the side surface of the water turbine casing 3 is formed at both ends of the bottom portion of the water turbine suspension 2.

The height of the downward protruding portion 2C is longer than at least the side surface of the water turbine casing 3 and the front and rear length of the water turbine suspension 2. A weight 2D adapted to the inside of the lower portion of the downward projecting portion 2C is embedded. A plurality of small weights 2D can be used, and the weight can be adjusted by making them detachable from the outside.

As a result, the water flow flowing along the bottom lower surface 2A of the water turbine suspension 2 hits the water turbine housing 3 without being scattered laterally by the left and right downward projections 2C, and the middle portion of the water turbine housing 3 becomes thicker. Even if the water flow swells in the lateral direction, the speed is increased by the Coanda effect and hits the blade 13, so that the rotational efficiency can be increased. Further, even if the water wheel suspension 2 swings, it is possible to prevent air from entering under the bottom lower surface 2A and reducing the rotational speed of the rotor 14.

FIG. 5 is a front view showing Example 3 of the water turbine device. The same members as those in the previous example are denoted by the same reference numerals, and description thereof is omitted.
In the watermill device 1 according to the third embodiment, side attachments 16 are detachably connected to the left and right side surfaces of the main body of the waterwheel suspension 2 by a connector 17.

In order to carry in the state which fixed the waterwheel housing | casing 3 to the waterwheel suspension 2, and to install in the water channel R etc., the one where the volume of the waterwheel suspension 2 is small is excellent in workability | operativity.
The side appendage 16 in FIG. 5 is detachably connected to both side surfaces of the main body of the water turbine suspension 2 with an optional connector 17 at the installation site.

The size of this side accessory 16 is selected according to the situation at the site. The front and rear lengths of the side appendages 16 may be longer or shorter than the water wheel suspension 2. Thereby, the rolling of the water turbine casing 3 in the water channel R is alleviated.

FIG. 6 is a front view showing Example 4 of the water turbine device. The same members as those of the previous example are denoted by the same reference numerals and description thereof is omitted. A downward projecting portion 16A is provided so as to project the lower part of the outer side of the side appendage 16 in the water turbine apparatus 1 of the fourth embodiment downward longer than the inner side.

This makes it difficult for the waves to roll and to lean to the side of the waterway. Further, by placing the weight 16B in a detachable manner inside the downward projecting portion 16A, it is difficult to roll and the horizontal stability is maintained.

FIG. 7 is a longitudinal side view of the water guide device 1 for a water turbine according to a fifth embodiment of the present invention. The same members as those of the previous example are denoted by the same reference numerals and description thereof is omitted.
In FIG. 7, a long cylindrical water turbine casing 3 facing in the front-rear direction from the bottom lower surface 2 A of the water turbine suspension 2 is suspended horizontally via a suspension support 4. The water wheel suspension 2 is arbitrarily formed from a metal or FRP hollow body, a ship shape, or a foamed resin molded body.

The bottom lower surface 2A of the water turbine suspension 2 is a horizontal surface that is long in the front-rear direction, and the front end surface of the water turbine suspension 2 is a curved surface that faces from the upper surface 2B to the lower rear direction. A plurality of anchoring hooks 5, 5 that connect the ropes 6 are fixed. Inside the water turbine suspension 2, a storage battery 7, a controller (not shown), and the like are arranged.

It is preferable that the bottom lower surface 2A of the rear portion of the water turbine suspension 2 is maintained as horizontal and extends in the rearward direction of the rotor 11 portion as long as possible at least as much as the diameter of the rotor 11.
This is because, for example, when the water turbine suspension 2 sways in the waves, if air enters the bottom lower surface 2A from the rear, the water pressure changes, so the speed of the water flow flowing from the front toward the rotor 11 changes. This is because a change such as a sudden decrease in the rotational speed of 11 may occur.

The cross section of the suspension support body 4 is long in the front-rear direction, is flat in the left-right direction, has a leading edge that is thick in the left-right direction, and is gradually thinner toward the rear end.
Inside the suspension support 4, a cord 9 for transmitting power from the generator 8 disposed in the water turbine casing 3 to the storage battery 7 in the water turbine suspension 2 is disposed. The upper and lower ends of the suspension support 4 are connected to the water turbine casing 3 and the water turbine suspension 2 so as to be detachable.

The height of the suspension support 4 is within the maximum height of the water turbine casing 3. As a result, the distance between the bottom lower surface 2A of the water turbine suspension 2 and the central portion of the upper surface of the water turbine housing 3 is within the height of the water turbine housing 3, and the water flow passing between them is a low gap. The flow velocity is increased.

The water turbine casing 3 is long in the front and back, thick in the center, and gradually narrowed toward the front and rear ends. The front end portion of the rotor shaft 10 that is horizontally supported inside the water turbine casing 3 is connected to the generator 8, and the rotor shaft 10 that protrudes rearward from the water turbine casing 3 has a rotor at the rear end portion. 11 is installed. When the rotor 11 rotates due to the water flow, the generator 8 rotates to generate electricity. The rotor 11 may be attached to the front end portion of the water turbine casing 3 or may be attached to the front and rear.

The water flowing down along the peripheral surface of the turbine casing 3 hits the front surface of the blade 13, moves to the tip by centrifugal force while rotating the blade 13, hits the inclined portion 13A, and escapes in the direction indicated by the arrow B. However, the blade 13 is rotated by the reaction.

As shown in FIG. 8, the water turbine suspension 2 includes a tunnel portion 20 including a pair of left and right

side wall portions

18 and 18 and a bottom plate portion 19 so as to surround the water turbine casing 3 on the bottom lower surface 2A. Formed. The tunnel portion 20 has a rectangular shape in front view, a circular shape, a hexagonal shape, or any other cylindrical shape, but a circular shape can be utilized with less waste of water flow. As shown in FIG. 7, the bottom plate part 19 is warped toward the rear part in a side view. Thereby, there is an effect that the passage speed is faster than the straight line shape or the downward warping.

In the water channel R, the bottom layer flow has a high density but a low flow velocity. On the other hand, the upper layer flow has a larger flow velocity than the bottom layer flow.
Therefore, as shown in FIG. 7, the tip edge 19A of the bottom plate portion 19 is curved and inclined downward, so that the bottom layer flow corresponding thereto is pressurized and guided at a higher speed in the upper layer direction by the Coanda effect, It is mixed with the upper layer flow and hits the water turbine casing 3.

The bottom plate portion 19 of the tunnel portion 20 is capable of guiding a bottom flow into the tunnel portion 20 by allowing the front portion from the hinge 19B portion to swing up and down by a vertical movement of a winding chain attached to a tip (not shown). Can do. By lowering the front end of the bottom plate portion 19 such as when the water channel width is narrow, the bottom flow can be guided upward to increase the water pressure on the rotor 11.

As shown in FIG. 8, in the tunnel portion 20, the inner wall surface 20 A in the portion where the water turbine casing 3 is installed has a cylindrical shape with a small diameter.
The rear end portion is opened in a trumpet shape with a large diameter so that the water flow in the tunnel portion 20 can be easily discharged.

The water flow flowing in from the front part of the tunnel part 20 is compressed at the front part of the water turbine casing 3 to increase the water pressure, and further passes through the cylindrical part 20A having a small diameter in the tunnel part 20 to the rear at high speed. In the process, the rotor 11 is rotated efficiently.
In this water channel R, since there is a downward gradient from upstream to downstream, unlike the air flow, the water flow easily passes through the bottleneck at high speed due to gravity movement of water.

As shown in FIG. 2, the water guide device 1 for a water turbine constructed as described above is suspended from a suspension girder 14 spanned on both sides of a water channel R by a mooring line 6 hung on a hook 5 and suspended from a water turbine. The bottom lower surface 2A of the body 2 is installed so as to be submerged horizontally.
Thereby, workability | operativity which installs the water guide apparatus 1 of a water turbine improves. If the weight 18A is embedded in the lower end portion of the side wall portion 18 of the tunnel portion 20, the roll is reduced.

In FIG. 1, the central portion of the water turbine casing 3 has a large diameter and is higher than the front and rear end portions. Therefore, the flowing water flowing down from the front flows along the peripheral surface shape of the water turbine casing 3 due to the Coanda effect, and rises from the front end portion to the central portion in the shape of arrow A. The bulk of the water will increase and will rise.

Moreover, as shown in FIG. 7, since the suspension support body 4 is provided in the center part which the water turbine housing 3 expanded greatly, in the upper surface of the water turbine housing 3, the surface of the water turbine housing 3 from the front part , The water flow rising to the center portion and the water flow colliding with the front surface of the suspension support body 4 will rise.

In the water guide device 1 for a water wheel of the present invention, the bottom surface 2A of the water wheel suspension 2 suppresses the rising of the water flow passing through the top surface of the water wheel housing 3, so that the water volume at that portion increases and the water pressure increases. Increases and passes along the side surface of the suspension support 4 at a high speed.

Accordingly, the water flow passing along the side surface of the suspension support 4 passes at high speed in the backward direction of the low water pressure of the water turbine casing 3, and the water flow in the front portion of the suspension support body 4 is moved backward by the difference in water pressure. It is possible to increase the flow speed and the rotation efficiency of the rotor 11 by strongly sucking. *

FIG. 9 is a front view showing Example 6 of the water guide device for a water turbine. The same members as those in the previous example are denoted by the same reference numerals, and description thereof is omitted.
In the water guide device 1 for a water wheel of the sixth embodiment, side attachments 16 are detachably connected to the left and right side surfaces of the main body of the water wheel suspension 2 by a connector 17.

In order to carry in the state which fixed the waterwheel housing | casing 3 to the waterwheel suspension 2, and to install in the water channel R etc., the one where the volume of the waterwheel suspension 2 is small is excellent in workability | operativity.
The side appendage 16 in FIG. 9 is detachably connected to both side surfaces of the main body of the water turbine suspension 2 with an optional connector 17 at the installation site.

FIG. 10 is a front view showing Example 7 of the water guide device for a water turbine. The same members as those of the previous example are denoted by the same reference numerals and description thereof is omitted. In the side additive 16 in the seventh embodiment, a downward projecting portion 16A is formed by projecting an outer lower portion downward from an inner side. A weight can be embedded in the lower part of the downward projecting portion 16A.

FIG. 11 is a longitudinal side view showing an eighth embodiment of the water guide device for a water turbine, and FIG. 12 is a front view thereof. 11 and 12, a water guide duct 21 (hereinafter simply referred to as a duct) is formed in the lower part of the water turbine suspension 2 by the left and

right side walls

21A, 21B and the bottom body 21C, and is substantially trapezoidal in a side view.

A tunnel portion 20 penetrating from the front surface 21C to the rear surface 21D of the duct 21 is formed, and the bottom lower surface 2A of the water turbine suspension 2 is an upper inner wall surface of the tunnel portion 20.
In addition, the front and rear end portions of the bottom plate portion 19 are positioned so as to be in contact with the bottom surface r of the water channel, and the front edge 19 in the longitudinal side view has a spherical shape, and is curved downwardly from the highest portion 19B to the rear edge portion 19C. Has been.

In FIG. 11, the highest portion 19B of the bottom plate portion 19 bulges larger than the cross section of the lift-type wing, so that the water flow rising from the front edge 19 to the highest portion 19B and passing to the rear edge portion 19C is high speed due to the Coanda effect. Pass through.
Further, since the highest portion 19B is a bottleneck, the flow velocity in this portion is the fastest.
Therefore, if the rotor 11 is disposed at the highest portion 19B, efficient power generation can be performed.

The water turbine casing 3 has a rotor 11 mounted on the tip of a rotor shaft 10 supported therein, and the lift type blade 13 of the rotor 11 has an inclined portion 13A whose tip is inclined forward.

The water turbine casing 3 is supported by a suspension support 4 that protrudes upward through the water turbine suspension 2, and the upper end of the suspension support 4 passes through the suspension girder 14 and is fixed to the upper portion of the generator 8. It is connected to. A transmission shaft (not shown) connected to the rotor shaft 10 is housed inside the suspension support 4, and the transmission shaft is connected to the main shaft of the generator 8, and the generator 8 generates power by the rotation of the rotor 11.

The fixing device 22 suppresses the upper surface of the water turbine suspension 2 from the suspension girders 14 installed on both sides of the water channel R so that the water turbine suspension 2 is not moved and moved. The fixing device 22 may be any known device, but in FIG. 11, a screwdriver screw is shown.
A weight 23 is detachably attached to the inside of the bottom plate portion 19 as necessary.

Further, as shown in FIG. 13, if necessary,

notches

21E and 21E that penetrate deeply from the front outer side to the rear inner side and penetrate from the top to the bottom are formed on both outer side portions of the duct 21 to form plate-like stops. The

water material

24, 24 is fitted. The length of the water blocking material 24 is appropriately adjusted according to the gap between the side wall of the water channel R and the outer surface of the duct 21.

As a result, the duct 21 plays a role like a weir in the irrigation channel R, and the stopped flowing water flows down over the upper surface of the duct 21, and the flowing water enters the tunnel portion 20 of the duct 21 at high speed. Pass the rotor 11 and rotate the rotor 11 efficiently.

Dust removal 25 shown in FIG. 11 can be attached to the front surface 21C of the duct 21 as necessary. The dust 25 is a vertically striped lattice, a spider or other suitable object, and the lower end is slanted forward, so that the dust in contact with the dust rises upward and passes through the upper surface of the duct 21.

The material of the duct 21 is arbitrary. For example, the core portion is formed of foamed resin, and the surface is the surface layer of FRP. This makes it possible to easily form a duct that is somewhat large, and because it is lightweight, it can be easily transported and installed. Naturally, it can be set in the water channel R by forming a hollow body of FRP and filling the hollow portion with water.

As a manufacturing method, the water wheel suspension 2 shown in FIG. 11 and the side wall 21A are formed in a vertically divided form, and the water wheel casing 3 is attached to the water wheel suspension 2. Thereafter, the upper and lower members are overlapped and joined.
Or a square cylinder is formed with FRP or a metal, and the internal member shape | molded with the foaming resin is affixed on the inner surface.

When installing, the water source of the irrigation channel R is closed, and the bottom plate portion 19 of the duct 21 is fixed to the channel bottom surface r. The length of the suspension support 4 is adjusted, and the internal transmission shaft is connected to the generator 8 supported by the suspension girder 14.

When water flows in the irrigation channel R, the bottom layer flow climbs up the front edge 19A from the lower front part of the duct 21 to the highest part 19B, merges with the upper layer flow, and passes through the rear at a high speed by the Coanda effect. The rotor 11 is efficiently rotated in the process.

In addition, since the front and rear central portions bulge downward also on the upper inner wall surface 4A of the water conduit 4, the water flow passes through the central portion at a high speed due to the Coanda effect.
The high-speed water flow that hits the lift-type blade 7 of the rotor 6 moves in the centrifugal direction, the diffusion is suppressed by the inclined portion 7A, and the rotation efficiency is increased.

The duct 21 not only collects and passes the water flow, but also has a vertical cross section of the bottom plate portion 19 of the tunnel portion 20 and has an arc curved surface with the middle portion being the highest portion 19B. The bottom is characterized by the fact that the bottom layer flow under water pressure passes at high speed.

Further, when the duct 21 is disposed so as to block the irrigation channel R, the duct 21 acts to block the water flow, and the water pressure is applied to the duct 21, so that the Coanda effect generated in the tunnel portion 20 rotates the rotor 6 with high efficiency. Let

13 is a hard material, for example, by attaching a U-shaped frame (not shown) to the side wall of the irrigation channel R and fitting the tip of the water stop material 15 into the groove. In addition, the duct 21 can be fixed and function as a dam plate.

In the watermill device 1 of the present invention, the distance between the lower surface of the bottom plate portion 2A of the watermill casing 3 and the top of the watermill casing is within the height of the watermill casing. It is suppressed and can flow down as a high-speed flow, and it can be set as the hydroelectric generator which rotates the rotor 11 efficiently in a small water channel.

1. 1. Watermill device Water turbine suspension 2A. Bottom bottom surface 2B. Top surface 2C. Downward projection 2D. Waterwheel casing 4. 4. Suspended support body Tether hook6. Mooring line7. Storage battery8. Generator 9. code
Ten. Rotor shaft
11． Rotor
12． Hub
13. Lift type blade
13A. Slope
14. Hanging girders
15． hook
16． Side accessory
16A. Downward projection
16B. Weight
17． Connector
18． Side wall
18A. Weight
19. Bottom plate
20. Tunnel
20A. Inner surface
twenty one. duct
21A. 21B. Side wall
21C. Front
21D. back face
twenty two. Fixing device
twenty three. Weight
twenty four. Water stop plate
twenty five. Dust removal Channel S. Axial line w. Water surface

Claims

A cylindrical turbine wheel casing is installed on the upper bottom surface of the water turbine casing provided with a rotor on the upper surface of the high-size portion, and on the lower bottom surface of the horizontal suspension of the turbine wheel floating on the water surface via the suspension branch. The body was hung horizontally with an interval within its height, and the rise of the water flow that climbed over the top surface of the water turbine housing and passed through it was suppressed at the bottom bottom surface of the water wheel suspension. A watermill device characterized.
2. The watermill device according to claim 1, wherein the waterwheel suspension has a bottom lower surface behind the rotor that is horizontal and has a length that is at least the diameter of the rotor from the rear part of the blade.
The water turbine device according to claim 1, wherein the water turbine suspension is formed with a downward projecting portion projecting downward at a bottom portion of a side end.
The water wheel device according to claim 3, wherein a weight is embedded in a bottom portion of the downward projection of the water wheel suspension.
The water turbine device according to any one of claims 1 to 4, wherein the water wheel suspension is detachably connected to the left and right sides of the main body.
6. The watermill device according to claim 5, wherein each of the side appendages is formed with a downward projecting portion in which an outer lower end portion projects downward from an inner side.
The water turbine device according to claim 6, wherein a weight is embedded in the bottom portion of each downward projection.
A tunnel portion is formed by a pair of side wall portions and a bottom plate portion on the lower surfaces of both side portions of the water turbine suspension, and the vertical cross-sectional shape of the bottom plate portion gradually descends from the rear end to the front end portion close to the water turbine casing. 2. The watermill device according to claim 1, wherein the water turbine device has an inclined surface, and the front portion of the bottom plate portion is wide and gradually narrows inward in a front view of the tunnel portion.
9. The watermill device according to claim 8, wherein the vertical side surface shape of the bottom plate portion in the tunnel portion is a spherical curved surface gradually descending from the highest portion to the rear end, with the front edge upper surface being spherical. .