JP3143189U - Small hydroelectric generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To be used stably in a river of natural size without harming the nature and to operate regardless of fluctuations in water level.
A rotating shaft 1 and four spiral blade members 2, 2,... Disposed on the outer periphery thereof, and a rotating shaft 1 and two spiral blade members 2, 2,. A cylindrical member 4 that is rotatably supported through 3, an upstream tapered end 5 that is configured at the upstream end of the cylindrical member 4, and an upstream end of the tapered inlet 5. A tapered strainer 6 extending further upstream from the section, a rotary power generator 7, and a rotation transmission means 8 for transmitting the rotational force of the rotary shaft 1 from the rear end of the rotary shaft 1 to the power generator 7. did.
[Selection] Figure 1

Description

  The present invention is arranged in a river flow along the direction of the flow, uses the force of the water flow to obtain a rotational force, and generates electricity with the obtained rotational force. The present invention relates to a small hydroelectric generator that is a generator suitable for an environment that does not involve generation of gas.

There are several proposals for such a small hydroelectric generator.
The first is a ship-like case that floats in water with a generator housed inside, a rotating shaft of the generator protruding from both sides of the ship-like case, and wings arranged radially around the rotating shafts on both sides Is a river-use motor power generation system (Patent Document 1) configured by: floating on a river including the ship-like case, connecting the bottom of the ship-like case and the bottom of the river with a splint, and the rotation axis thereof Set it in the river so that it is almost the same level as the water surface.

  Since this river-use motor power generation system is as described above, the wings rotate as a whole around the rotation axis according to the flow of the river, thereby giving the rotation operation to the rotation axis. The generator is allowed to perform a power generation operation, and can be set without any special change in the river. If the generator is set in a river having an appropriate flow velocity, a sufficient power generation amount can be secured.

  The second is a belt having a large number of water receiving pockets arranged on the outer surface side, a driving roller and a driven roller that span the belt, and two L-shaped coaxially arranged on both ends of the rotating shaft of the driving roller. And two rollers arranged in a state connecting the tips of the L-shaped arms on both sides, the two rollers arranged on the inner side of the belt, and the driven roller rotating between the tips Arms located on both sides of the belt arranged freely, a support column with bearings for rotatably supporting both ends of the rotating shaft, and base sides of the arms on both sides where both ends of the driven roller are rotatably coupled It is the power apparatus for water current power generation (patent document 2) comprised with the support | pillar supported rotatably.

  This power generator for water current power generation is used by turning the L-shaped arm and other arms so that a part of the lower side of the belt is slightly submerged in a water stream such as a river. As a result, a water flow force is applied to the water flow receiving pocket, and the belt moves in the flow direction. As a result, the belt moves around the driven roller, the two rollers at the tip of the L-shaped arm, and the drive roller. Will go around.

  For this reason, this power generator for water current power generation does not require a head, it is possible to generate power using a water flow like a river flow, and it is easy to adjust the depth of the belt to the water flow. It is said that efficient power generation can be performed.

No. 3 has a rotor including a water wheel rotatably provided around the axis of a rotating shaft oriented in the axial direction of the water channel in the water channel, and a stator disposed on the outer peripheral side of the rotor. In an axial flow type small hydroelectric generator that generates electricity by rotating the rotor by the water flow in the water channel,
The rotor is provided so as to be movable in the axial direction, and the rotor is biased by a spring in a direction opposite to the direction of the water flow, and the rotor is positioned at a position away from the stator in the axial direction when the water flow is stopped. In the axial flow type small hydroelectric generator (Patent Document 3), the rotor is moved in the axial direction against the biasing force of the spring in the axial direction due to the occurrence of is there.

  According to this small axial flow generator, when the water flow is stopped, the rotor moves in the axial direction by the action of the spring and moves away from the stator, so when a water flow is newly generated, The rotation can be started immediately without being adversely affected by the detent torque, and the rotor can return to between the stators while rotating to start power generation.

  As described above, the river-based motor power generation system disclosed in Patent Document 1 is used while floating on a water stream such as a river while preventing movement of the river using a tie rope. It is stable. The power generator for water current generation of Patent Document 2 is difficult to automatically cope with fluctuations in water level, and is unsuitable for application to natural rivers and the like. The axial flow type small hydroelectric generator of Patent Document 3 is not originally intended for use in a natural river or the like, and its action is not intended to occur in a natural river.

JP 2006-233950 A Utility Model Registration No. 3126740 JP 2004-257330 A

  The present invention solves the above-mentioned problems of the prior art, and can be stably used by placing it in natural large and small rivers without harming the nature, regardless of fluctuations in the water level. An object of the present invention is to provide a small hydroelectric generator that can operate.

  A first aspect of the present invention includes a rotating shaft arranged along a river flow, a plurality of spiral blade members fixed to the outer periphery of the rotating shaft, and the rotating shaft and the spiral blade member. A cylindrical member that is externally supported while being rotatably supported via a bearing at a location greater than or equal to a location, the cylindrical member having a tapered inlet that expands upstream at an upstream end thereof, and the tapered flow A tapered strainer extending further upstream from the upstream end of the inlet, and a rotary power generator, which receives the rotational force of the rotary shaft, either directly or indirectly through a rotational transmission means. A small hydroelectric generator composed of a power generation device coupled to a rotating shaft.

  According to a second aspect of the present invention, in the small hydroelectric generator according to the first aspect of the present invention, the upstream end and the downstream end of the spiral blade member are gradually retracted from the end toward the radial direction from the rotating shaft. It is comprised as follows.

  3 of the present invention is the small hydroelectric generator according to 1 or 2 of the present invention, wherein the spiral blade member is formed in a curved surface having a concave surface on the side where the flowing water collides.

  4 of the present invention is the small hydroelectric generator of 1, 2, or 3 of the present invention, wherein the strainer is extended from the upstream end of the tapered inlet to a further upstream side in a tapered state. And a small ring formed by joining the upstream ends of the plurality of small-diameter bar members.

  According to the small hydroelectric generator 1 of the present invention, it is possible to generate power efficiently by simply sinking along a flow in large and small rivers and guiding a large amount of flowing water to the inside to increase the flow velocity. In addition, it is not a thing that is connected to the bottom of the river with a bank, but can be stably placed at the bottom of the river. It is possible to continue power generation without any problem at higher levels. Furthermore, since the small hydroelectric generator 1 of the present invention can prevent various foreign substances from entering even if they are in the flow, it can be used for a long time without fear of failure. . In the case of a typhoon, it can be easily lifted for evacuation. According to the small hydroelectric generator 1 of the present invention, since it uses hydropower, it can be used effectively without problems that adversely affect the environment such as the generation of greenhouse gases.

  According to the small hydroelectric generator 2 of the present invention, by making the flow of river water flowing into the cylindrical member as smooth as possible, the force of the water flow is transmitted to the spiral blade member as efficiently as possible, and the rotation shaft rotates efficiently. Can be converted into force.

  According to the small hydroelectric generator 3 of the present invention, the power of flowing water can be effectively utilized to convert it into a rotational force, and power can be generated efficiently.

  According to the small hydroelectric generator 4 of the present invention, the inflow of foreign matters having a size that seems to be clogged into the cylindrical member is appropriately removed, and the rotation of the rotating shaft by the action of the spiral blade member is ensured and stable. Thus, the power generation function can be achieved. In addition, since the strainer is tapered, the foreign matter that could not pass through the gaps between the small-diameter rods or the small annulus is guided outside the strainer and easily flows to the downstream side. There is no risk of getting stuck.

  The best mode for carrying out the invention will be described in detail with reference to the drawings based on the embodiments.

  As shown in FIGS. 1 to 3, the small hydroelectric generator of this embodiment basically has a rotating shaft 1 and four spiral blade members 2, 2... Arranged on the outer periphery of the rotating shaft 1. The rotary shaft 1 and the spiral blade members 2, 2... Are externally supported through two bearings 3 and 3 at the front and rear of the rotary shaft 1, and the upstream side of the cylindrical member 4. A tapered inflow port 5 that is formed at the side end portion and that expands toward the upstream side, a tapered strainer 6 that extends further upstream from the upstream end portion of the tapered inflow port 5, and a rotary power generator 7 And a rotation transmission means 8 for transmitting the rotational force of the rotary shaft 1 from the rear end of the rotary shaft 1 to the power generation device 7.

  The rotating shaft 1 is composed of a metal cylinder having a necessary strength with both ends closed. The purpose is to reduce the weight while maintaining the strength. Moreover, as shown in FIG.1 and FIG.2, the both ends of this rotating shaft 1 are set as the structure which becomes thin gradually toward a front-end | tip, and it is made not to inhibit the smooth flow of a river water flow. As shown in FIGS. 1 and 3 (a) and 3 (b), the rotary shaft 1 rotates along the axial center of the cylindrical member 4 via two bearings 3 and 3 that are externally installed near the front and rear ends thereof. Arrange freely. The bearings 3, 3 are fixed in the cylindrical member 4 via four support rods 3 a, 3 a... That extend in the radial direction from the outer periphery thereof and whose outer ends are coupled to the inner periphery of the cylindrical member 4. It is set.

  The spiral blade members 2, 2... Are twisted with a metal plate made of the same material as that of the rotary shaft 1, and the pitch is 1800 mm in this embodiment. However, in this embodiment, since the spiral blade members 2, 2,... Are arranged only within the length range of 900 mm of the rotating shaft 1, each one of the spiral blade members 2, 2,. It is arranged. In this embodiment, the four spiral blade members 2, 2,... Are arranged on the outer periphery of the rotary shaft 1 at an angular interval of 90 degrees in the circumferential direction.

  Further, as shown in FIG. 1, the spiral blade members 2, 2... Retreat toward the center in the length direction, respectively, as the front end and the rear end move in the radial direction from the surface of the rotating shaft 1 ( That is, it is inclined). Further, as shown in FIGS. 3 (a) and 3 (b), the spiral blade members 2, 2,... Have a curved surface with a concave surface on the side on which the water flow collides.

  1 to 3 (a) and 3 (b), the cylindrical member 4 is a cylindrical body having an inner diameter slightly larger than an outer diameter drawn by the spiral blade members 2, 2 ... It is composed of a metal having sufficient strength. As described above, the bearings 3 and 3 are fixed with the shaft centers aligned with each other via the support rods 3a, 3a..., And the rotary shaft 1 is connected to the shaft center through the bearings 3 and 3. It is arranged so as to be freely rotatable along.

  The tapered inlet 5 is configured to expand further upstream from the upstream end of the cylindrical member 4 as shown in FIGS. 1 to 3 (a) and 3 (b). A part of the cylindrical member 4 is made of the same metal plate material. A large amount of flowing water is introduced into the cylindrical member 4 to increase the flow velocity.

  As shown in FIGS. 1 and 2, the strainer 6 is configured to taper from the upstream end of the tapered inlet 5 in this embodiment. As shown in FIGS. 1 to 3 (a), a large number of small-diameter bar members 6a, 6a... Extend from the upstream end of the tapered inlet 5 in a tapered state further toward the upstream side, and their most upstream ends. Is bonded and fixed to the small ring body 6b. The distance between the most downstream ends of the adjacent small-diameter bar members 6a, 6a, and the diameter of the small ring body 6b are the minimum distance between the adjacent spiral blade members 2, 2 and the outer peripheral surface of the rotating shaft 1. The space between the inner peripheral surface of the cylindrical member 4 is smaller than that of the cylindrical member 4. The purpose is to prevent the inflow of foreign matter that cannot pass through the inside of the cylindrical member 4.

  The power generation device 7 is a known rotary generator, and naturally employs an output having an output corresponding to the capacity of the spiral blade members 2, 2.

  The rotation transmission means 8 can be freely configured by combining a general gear train, a chain and a chain wheel, etc. In this embodiment, FIGS. 1 to 3 (a) and 3 (b) As shown, a chain wheel 8a fixed near the downstream end of the rotating shaft 1, a chain wheel 8b fixed to the input rotating shaft 7a of the power generator 8, and a chain spanned between the two wheel wheels 8a and 8b. 8c.

  The rotation transmitting means 8 is arranged in the vicinity of the downstream end of the cylindrical member 4 in the figure, but this is for the convenience of drawing, and the flowing water discharged from the cylindrical member 4 is The rotating shaft 1 should be sufficiently extended so as not to obstruct the flow, and should be provided between the long end of the rotating shaft 1 and the input rotating shaft 7a of the power generator 7.

  In this embodiment, the rotation transmitting means 8 is employed to transmit the rotational force of the rotating shaft 1 to the power generation device 7, but instead, it is directly connected to the extended end of the rotating shaft 1. Needless to say, the input rotary shaft 7a of the power generator 7 may be coupled in a coaxial state. Of course, in this case, it is naturally necessary to provide a sufficient waterproof means for the power generator 7.

  Therefore, according to the small hydroelectric generator of this embodiment, it can be used by submerging it in a large or small river along the flow. Naturally, the strainer 6 is submerged in the river with the upstream end facing the upstream side. In this embodiment, the power generation device 7 is arranged outside the river, and the rotation transmission means 8 transmits the rotation of the rotary shaft 1 in the mechanism submerged in the river to the power generation device 7.

  The river water is introduced into the tapered inlet 5 through the strainer 6. For this reason, uselessly large foreign matters do not flow into the tapered inlet 5, and are inserted between the spiral blade members 2, 2... In the subsequent cylindrical member 4 or between the rotary shaft 1 and the cylindrical member 4. There is no risk of clogging and losing its function. Further, the foreign matter that has been excluded from entering the tapered inlet 5 by the strainer 6 flows smoothly along the outer side of the strainer 6 so that it moves downstream. Can do. Therefore, there is no possibility that a problem such as the foreign matter staying outside the strainer 6 occurs.

  The river water flowing into the tapered inlet 5 has a large diameter at the upstream side of the tapered inlet 5 and a small diameter toward the downstream side, and is connected to the upstream end of the cylindrical member 4 at the most downstream end. Therefore, the cylindrical member 4 flows at a higher speed than the outside of the cylindrical member 4, and acts strongly on the spiral blade members 2, 2. 1 is efficiently rotated.

  As described above, the spiral blade members 2, 2... Are configured to gradually incline toward the center in the length direction toward the radial direction at the upstream end and the downstream end thereof. The flow becomes smooth on the side, and the rotational force can be obtained more efficiently.

  As described above, the spiral blade members 2, 2,... Are configured to have a curved surface in which the surface on which the running water collides becomes a concave portion, so that it is possible to appropriately receive the force of river running water. Thus, the rotational force can be obtained more efficiently.

  The rotating shaft 1 is rotated by the action of the spiral blade members 2, 2..., And the rotational force is caused by the chain wheels 8 a and 8 b of the rotation transmitting means 8 and the chain 8 c spanned between them as described above. The power is transmitted to the power generation device 7 and converted into electric power by the power generation device 7.

  In addition, according to the small hydroelectric generator of this embodiment, as described above, since it is a thing that sinks along the flow at the bottom of the river, it can be placed more stably than an object that floats on the river. It is possible to continue power generation without any problem as long as the flow velocity is slightly increased due to some rainfall.

  Furthermore, according to the small hydroelectric generator of this embodiment, it is possible to operate in accordance with the environment without problems such as generation of greenhouse gases.

The partial cross section top view of the small-sized hydroelectric generator of an Example. The top view of the small-sized hydroelectric generator of an Example. (a) is a front view of the small-sized hydroelectric generator of an Example, (b) is front sectional drawing which carried out the cross section in the taper-shaped inlet upstream vicinity of an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotating shaft 2 Spiral blade member 3 Bearing 3a Support rod 4 Cylindrical member 5 Tapered inlet 6 Strainer 6a Small-diameter bar 6b Small ring body 7 Power generation device 7a Input rotating shaft 8 Rotation transmission means 8a, 8b Chain wheel 8c Chain

Claims (4)

A rotation axis arranged along the flow of the river,
A plurality of spiral blade members fixed to the outer periphery of the rotating shaft;
A cylindrical member that externally supports the rotating shaft and the spiral blade member while supporting the rotating shaft and the spiral blade member at two or more locations before and after the rotating shaft via a bearing, and expands toward the upstream end of the cylindrical member. A cylindrical member with a tapered inlet,
A tapered strainer extending further upstream from the upstream end of the tapered inlet;
A rotary power generator, wherein the power generator is coupled to the rotary shaft directly or indirectly via a rotation transmission means to receive the rotational force of the rotary shaft;
A small hydroelectric generator composed of   The small hydraulic power generator according to claim 1, wherein the upstream end and the downstream end of the spiral blade member are configured to gradually retreat from the end toward the radial direction from the rotating shaft.   The small hydroelectric generator according to claim 1 or 2, wherein the spiral blade member is formed in a curved surface having a concave surface on the side where the flowing water collides.   The strainer is composed of a plurality of small-diameter bars extending in a tapered state further upstream from the upstream end of the tapered inlet, and a small ring body connecting the upstream ends of the plurality of small-diameter bars. 1, 2, or 3 small hydroelectric generators.

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