HYDROELECTRIC GENERATING DEVICE

Abstract

A hydraulic power generating apparatus which can be easily disposed in a water channel, such as a waterway or a water conducting pipe. The hydraulic power generating apparatus comprises a horizontal rotor supporting housing (4) having a rotor, a holding body (5) erected on an upper surface of the rotor supporting housing (4), a support ring (2) in which the rotor supporting housing (4) is fixed, and a power generator (11). The rotor supporting housing (4) is integrally fixed within the support ring (2) by the holding body (5). The power generator (11) is disposed on the upper part of the holding body (5) protruding from the support ring (2), and the support ring (2) is formed with attachment portions (2A, 2B) for fixing the rotor supporting housing (4) in a water channel.

Claims

1. A hydraulic power generating apparatus comprising: a horizontal rotor supporting housing having a rotor; a holding body erected on an upper surface of the rotor supporting housing; a support ring in which the rotor supporting housing is fixed; and a power generator, the rotor supporting housing is integrally fixed within the support ring by the holding body, the power generator is disposed on the upper part of the holding body protruding from the support ring, and the support ring is formed with attachment portions for fixing the rotor supporting housing in a water channel.

2. The hydraulic power generating apparatus according to claim 1, wherein the holding body is a cylindrical body, and includes a transmission shaft for transmitting a rotational force of a rotor shaft to the power generator, and a connecting portion for connecting an auxiliary holding body is formed on an upper surface of the holding body.

3. The hydraulic power generating apparatus according to claim 1, wherein the attachment portion of the support ring is an outward flange having bolt holes opened at constant intervals.

4. The hydraulic power generating apparatus according to claim 1, wherein the water channel is a water conducting pipe for conducting water from a water source, and the support ring is disposed between the front and rear water conducting pipes having an outward flange at the front and rear, and the attachment portion is connected to the flange of the water conducting pipe.

5. The hydraulic power generating apparatus according to claim 1, wherein the water channel is a waterway, and a suspension member attached to the attachment portion of the support ring is fixed on a beam installed on both banks of the waterway.

6. The hydraulic power generating apparatus according to claim 1, wherein a rotor shaft of the rotor is disposed at a position deviating downward from a center of the support ring.

7. The hydraulic power generating apparatus according to claim 1, wherein a cross section of the holding body is substantially fish shape with thick front and narrowing backward.

8. The hydraulic power generating apparatus according to claim 2, wherein the attachment portion of the support ring is an outward flange having bolt holes opened at constant intervals.

9. The hydraulic power generating apparatus according to claim 2, wherein the water channel is a water conducting pipe for conducting water from a water source, and the support ring is disposed between the front and rear water conducting pipes having an outward flange at the front and rear, and the attachment portion is connected to the flange of the water conducting pipe.

10. The hydraulic power generating apparatus according to claim 3, wherein the water channel is a water conducting pipe for conducting water from a water source, and the support ring is disposed between the front and rear water conducting pipes having an outward flange at the front and rear, and the attachment portion is connected to the flange of the water conducting pipe.

11. The hydraulic power generating apparatus according to claim 2, wherein the water channel is a waterway, and a suspension member attached to the attachment portion of the support ring is fixed on a beam installed on both banks of the waterway.

12. The hydraulic power generating apparatus according to claim 3, wherein the water channel is a waterway, and a suspension member attached to the attachment portion of the support ring is fixed on a beam installed on both banks of the waterway.

13. The hydraulic power generating apparatus according to claim 2, wherein a rotor shaft of the rotor is disposed at a position deviating downward from a center of the support ring.

14. The hydraulic power generating apparatus according to claim 3, wherein a rotor shaft of the rotor is disposed at a position deviating downward from a center of the support ring.

15. The hydraulic power generating apparatus according to claim 4, wherein a rotor shaft of the rotor is disposed at a position deviating downward from a center of the support ring.

16. The hydraulic power generating apparatus according to claim 5, wherein a rotor shaft of the rotor is disposed at a position deviating downward from a center of the support ring.

17. The hydraulic power generating apparatus according to claim 2, wherein a cross section of the holding body is substantially fish shape with thick front and narrowing backward.

18. The hydraulic power generating apparatus according to claim 3, wherein a cross section of the holding body is substantially fish shape with thick front and narrowing backward.

19. The hydraulic power generating apparatus according to claim 4, wherein a cross section of the holding body is substantially fish shape with thick front and narrowing backward.

20. The hydraulic power generating apparatus according to claim 5, wherein a cross section of the holding body is substantially fish shape with thick front and narrowing backward.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG. 1 is a side view of an embodiment of the present invention.

[0027] FIG. 2 is a front view of a usage example 1 of the hydraulic power generating apparatus shown in FIG. 1.

[0028] FIG. 3 is a cross-sectional view taken along the line of the holding body in FIG. 1.

[0029] FIG. 4 is a cross-sectional view taken along the line Iv-Iv of the support column in FIG. 1.

[0030] FIG. 5 is a cross-sectional view of the maximum string length portion of the blade in FIG. 1.

[0031] FIG. 6 is a side view of a usage example 2 of the hydraulic power generating apparatus of the present invention.

[0032] FIG. 7 is a side view of a usage example 3 of the hydraulic power generating apparatus of the present invention.

[0033] FIG. 8 is a side view of a usage example 4 of the hydraulic power generating apparatus of the present invention.

EMBODIMENTS OF THE INVENTION

[0034] An embodiment of the present invention will be described below with reference to the drawings.

Example 1

[0035] As shown in FIGS. 1 and 2, a hydraulic power generating apparatus 1 of the present invention has the same diameter as a water conducting pipe 21 for drawing water from a water source, a horizontal rotor supporting housing 4 provided with a rotor 3 is integrally fixed by a vertical holding body 5 to the inside of a support ring 2 having a short length.

[0036] In addition, at the lower surface of the rotor supporting housing 4, a support plate 12 long in the front-to-rear direction is fixed between lower inner wall surfaces of the support ring 2. As shown in a cross-sectional view of FIG. 3, the holding body 5 is a hollow body having a substantially fish shape in a plan view, a transmission shaft 8 is disposed inside the holding body 5 and is pivotally supported by upper and lower bearings 5B, 5C as shown in FIG. 1. As shown in FIG. 4, the support plate 12 is the fish shape in a plan view. The water flow impinging on the holding body 5 and the support plate 12 passes at high speed by Coanda effect.

[0037] Outward flanges 2A and 2B serving as attachment portions are protruded from the front and rear peripheral surfaces of the support ring 2, and bolt holes 2C are formed in the front and rear direction at constant intervals at the outward flanges 2A and 2B so as to be connectable with the water conducting pipe 12.

[0038] An auxiliary holding body 6 is connected to the upper part of the holding body 5 via outward flanges 5A, 6A, and a power generator 11 is installed on the upper side of the auxiliary holding body 6.

[0039] The auxiliary holding body 6 is used when the water surface of a water channel R is low, and the auxiliary holding body 6 is not used unless a water surface is low.

[0040] A horizontal rotor shaft 7 is disposed inside the rotor supporting housing 4, and a rotor 3 is mounted on the front end of the rotor shaft 7. A plurality of lift-type blades 3B (hereinafter simply referred to as blades) are mounted on the circumferential surface of a hub 3A of the rotor 3 in a radial direction. The tip of the blade 3B is an inclined portion 3C which is inclined forward.

[0041] The rear end portion of the rotor shaft 7 and the lower end portion of the transmission shaft 8 in the holding body 5 are linked by transmission means comprising bevel gears 7A and 8A. The upper end of the transmission shaft 8 is connected to an auxiliary transmission shaft 9 via a connecting tool 10 in the portion of the holding body 5, and the upper end portion of the auxiliary transmission shaft 9 is connected to a main shaft of the power generator 11. A plate-shaped support plate 12 elongated in the front-rear direction is fixed to a lower surface of a bearing housing 4 disposed below the holding body 5.

[0042] The tip portion of the blade 3B is the inclined portion 3C that is inclined by about 35 to 45 degrees in the front direction. The blade 3B is gradually widened in string length from the blade root to the blade tip, and the maximum string length is set from 35 to 50% of a turning radius and a water receiving area at a centrifugal portion is set to be large. The inclined portion 3C is inclined in the upstream direction with the maximum string length portion 3D as a base point.

[0043] The thickness of the blade 3B is parallel from the blade root to the blade tip in a side view, and the maximum thickness is set from 25 to 35% of the string length as shown by the cross section in FIG. 5.

[0044] When it exceeds 35%, the resistance becomes large, and the speed difference of the running water along a front face 3E and a back face 3F becomes large, and the rotation efficiency decreases. On the other hand, when it is 25% or less, the water velocity passing along the back surface 3F and the reaction by it are also small, and the rotation efficiency is difficult to increase.

[0045] When the blade 3B rotates, due to a large bulge of the back face 3F, the water flow passing along the back face 3F flows at a higher speed than the water flow passing along the front face 3E, as a reaction, the rotation speed of the blade 3B increases.

[0046] FIG. 2 is a front view showing a state in which the hydraulic power generating apparatus 1 is used in a water channel R for agriculture.

[0047] The hydraulic power generating apparatus 1 is fixed by hanging a flange 6B of the upper end of the auxiliary holding body 6 on a beam 13 installed above the water surface of the water channel R.

[0048] Further, the fixture 14A at the lower portion of a hanging member 14 is fixed to the attachment portions 2A, 2B at the front and rear of the support ring 2 with bolts 14B or the like, a fixture 14C at the upper portion of the hanging member 14 is fixed to the beam 13.

[0049] As a result, the support ring 2 is fixed to the beam 13 by the hanging members 14 fixed to the attachment portions 2A, 2B at the front and rear of the support ring 2, so that the support ring 2 is firmly fixed without moving even if water pressure is applied to the rotor 3.

[0050] FIG. 6 shows a usage example in which a water collecting pipe 15 is fixed to the front face of the support ring 2 by connecting attachment portions 2A, 15A to each other. By making this water collecting pipe 15 face rearward, it can also be attached to the attachment portion 2B on the rear portion. Thereby, the vicinity of the rotor supporting housing 4 can be a narrow path.

[0051] FIG. 7 is a side view showing a mode in which the hydraulic power generating apparatus 1 is used in a place with a water head. The same reference signs are attached to the same members as a previous example, and a description is omitted. This is to utilize a water head at a small waterfall and a cliff.

[0052] A support frame 17 is provided on a lowland 16A of a cliff 16, and the rotor 3 is faced upward, then the hydraulic power generating apparatus 1 is fixed. The water conducting pipe 18 is connected above the supporting ring 2 via outward flanges 2A, 18A respectively.

[0053] The upper part of the water conducting pipe 18 is fixed to the cliff 16 with a fixing member 19. The pipe opening at the upper part of the water conducting pipe 18 is aligned with a water conducting channel 20. The water conducting channel 20 may be drawn from another water source using the water conducting pipe 18 or may use a small stream.

[0054] As a result, even if a flow rate is small, the running water having a water head can be guided to the hydraulic power generating apparatus 1 by the water conducting pipe 18, so that, even if a pipe diameter of the water conducting pipe 18 is small, the power generation efficiency can be increased by the water head.

[0055] FIG. 8 is a side view showing a state in which the hydraulic power generating apparatus 1 is used for water conducting pipes 21, 22 for drawing water from a water source to a destination for a long distance. The same reference signs are attached to the same members as a previous example, and a description is omitted.

[0056] The water conducting pipe 21 has, for example, a length of 10 m per each pipe and is connected for several kilometers. The pipe diameter is, for example, 70 cm.

[0057] If the location is compatible, since the water conducting pipe 21 can be arranged for as long as several kilometers, when the hydraulic power generating apparatus 1 of the present invention is disposed, for example, at every 10 m of the long water conducting pipe 21, 100 hydraulic power generating apparatuses 1 can be arranged assuming that 1 km of water conducting pipe 21 is connected.

[0058] For example, even with a small power generator 11 of 500 W, if 100 units can be installed, a power generation facility capable of stable power generation of 50 kW is realized.

[0059] In this case, the water conducting pipe 21 is a downslope from the water source even if the pipe 21 is bent according to the natural terrain and there is a difference in elevation, so that, even if the flow velocity does not change, water gravity is larger at the downstream side than at the upstream side, therefore, the power generation efficiency by each generator is higher in the downstream.

[0060] When the spaces between the rotors 3 of the hydraulic power generating apparatus 1 arranged in the front and rear are separated by 10 m, the turbulent flow due to the rotation of the rotor 3 positioned in the front does not affect the rotor 3 positioned in the rear. If there is a geographical condition that the slope is large, it is possible to utilize the water gravity, so that the distance between the front and rear rotors 3, 3 can be reduced.

[0061] As shown in FIG. 8, the connection between the water conducting pipe 21 and the support ring 2 is achieved by connecting the attachment portions 2A and 21A with bolts. When the diameter of the water conducting pipe 22 is larger than the diameter of the support ring 2, as shown in the right side of FIG. 8, by using a relay ring 23 having different front and rear diameters, the support ring 2 and the water conducting pipe 22 can be connected even if the pipe diameters are different.

[0062] Although the outward flanges are shown as the attachment portions 2A and 2B of the support ring 2, for example, a faucet joint or other known connecting method can be used. In FIG. 1, the holding body 5 is vertical, but in a place where the slope is large, the holding body 5 can be coupled in a horizontal state.

INDUSTRIAL APPLICABILITY

[0063] The present invention relates to the hydroelectric power generator capable of easily disposing the rotor for power generation by connecting it to an existing or new water conducting pipe which draws water from a water source, in addition, the power generation facility capable of easily disposing in a waterway, efficiently using the water of the water channel is realized.

REFERENCE SIGNS LIST

[0064] 1 hydraulic power generating apparatus [0065] 2 support ring [0066] 2A, 2B attachment portion (outward flange) [0067] 2C bolt hole [0068] 3 rotor [0069] 3A hub [0070] 3B lift-type blade [0071] 3C inclined portion [0072] 3D maximum string length portion [0073] 3E front face [0074] 3F back face [0075] 4 rotor supporting housing [0076] 5 holding body [0077] 5A outward flange [0078] 6 auxiliary holding body [0079] 6A outward flange [0080] 6B flange [0081] 7 rotor shaft [0082] 7A bevel gear [0083] 8 transmission shaft [0084] 8A bevel gear [0085] 9 auxiliary transmission shaft [0086] 10 connecting tool [0087] 11 power generator [0088] 12 support plate [0089] 13 beam [0090] 14 hanging member [0091] 14A fixture [0092] 14B bolt [0093] 14C fixture [0094] 15 water collecting pipe [0095] 15A attachment portion [0096] 16 cliff [0097] 17 support frame [0098] 18 water conducting pipe [0099] 18A attachment portion [0100] 19 fixing member [0101] 20 water channel [0102] 21, 22 water conducting pipe [0103] 21A, 22A attachment portion [0104] 23 relay ring [0105] 23A, 23B attachment portion [0106] R water channel [0107] W water surface