JP2009281142A - Hydroelectric power generation facility - Google Patents

Abstract

[PROBLEMS] To provide a hydroelectric power generation facility with high power generation efficiency by using a difference in tide level of seawater to continuously generate power and pumping the seawater after power generation by a pumping means that does not use electricity. provide.
A power generation chamber (10) in which a hydro turbine (11) is stored, a reservoir (PO) for storing seawater after power generation, a water intake (12) are disposed below the sea surface, and a water discharge port (13) is disposed in the vicinity of the hydro turbine (11). The water guide pipe D and the inflow port 16 are communicated with the power generation chamber 10, and the outflow port 17 is provided in the water storage pipe PO and the water guide pipe D, and is rotated by the pressure and flow velocity of seawater. A rotary power generating means; and a pumping means connected to the rotary power generating means and disposed in the pumping pipe Y, and rotated by the rotary power of the rotary power generating means. The water is stored in the PO and drained into the sea through a drain pipe 22 provided on the peripheral wall 21 of the reservoir PO at the time of tide.
[Selection] Figure 1

Description

  The present invention relates to a hydroelectric power generation facility, and in particular, hydroelectric power generation that can generate power continuously by dropping seawater into an underground power generation room and pumping the seawater after power generation and draining it into the sea. Regarding equipment.

Conventionally, hydroelectric power generation equipment has been proposed in which seawater is dropped into an underground power generation room to generate electric power, and the generated seawater is drained into the sea using a pumping function (see, for example, Patent Document 1).
The hydroelectric power generation facility described in Patent Document 1 is configured such that seawater after power generation is pumped by the action of increasing the flow velocity by the throttle pipe structure of the pumping pipe and the pumping power by the pump.

Japanese Patent No. 3687790 (paragraph 0018, FIG. 2)

  However, in the hydroelectric power generation facility described in Patent Document 1, an electric motor is used to drive the pump, and electricity is used for driving, and the amount of electricity generated is reduced.

In view of the above problems, an object of the present invention is to generate power by dropping seawater into an underground power generation chamber, and pumping the seawater after power generation by a pumping means that does not require electricity, thereby generating hydroelectric power generation equipment with good power generation efficiency. Is to provide.
Another object of the present invention is to provide a hydroelectric power generation facility that can continuously generate power by utilizing the tide level difference of seawater.

  The problem is that according to the hydroelectric power generation facility of the present invention, seawater is dropped into the underground power generation room to generate power, and the generated seawater is pumped and drained into the sea to continuously generate power. In a possible hydroelectric power generation facility, there is a peripheral wall with a height that does not allow seawater to flow into the storage space at high tide, and a drain pipe with an open / close valve that is exposed from the sea surface at low tide is connected to the bottom of the peripheral wall. A water reservoir for storing the seawater of the sea, a hydroelectric generator housed in the underground power generation room, and a taper from a water intake located under the sea surface toward a drainage outlet located near the hydroelectric generator The water guide pipe and the inlet connected to the power generation chamber are disposed so as to taper toward the outlet located in the reservoir, and once protruded upward from the sea surface toward the outlet, the water storage Bay down until reaching below sea level A pumping pipe having a curved portion, a rotating power generating means that is arranged in the water guiding pipe and that is rotated by the pressure and flow velocity of seawater, and is connected to the rotating power generating means and arranged in the pumping pipe, The problem is solved by providing pumping means that pumps the seawater after power generation by rotating with the rotary power of the rotary power generating means.

As described above, in the hydroelectric power generation facility according to the present invention, the rotational power generating means that rotates according to the pressure and flow velocity of the seawater is disposed in the water conduit, and the rotational power of the rotational power generating means is connected to the rotational power generating means in the pumping pipe. The pumping means that rotates is arranged, and the seawater after power generation is pumped by rotating the pumping means. For this reason, the seawater after power generation can be pumped without using electricity, and a hydroelectric power generation facility with good power generation efficiency can be obtained.
In addition, power is generated by dropping seawater into the underground power generation room, pumping up the seawater after power generation, and draining the water from the reservoir at the time of submersion to continuously generate power using the sea level difference of seawater. Is possible.

  Further, it is preferable that the rotational power generating means and the pumping means are connected by a single rotating shaft and are arranged to be rotatable in the water flow direction. If comprised in this way, the rotational power obtained from the rotational power generation means can be transmitted to a pumping means via a rotating shaft, and the pumping means can be rotated in the same direction as the rotational power generation means.

  The rotational power generating means and the pumping means are disposed so as to be rotatable in the direction of water flow, the rotational shaft of the rotational power generating means extends to the pumping pipe side, and the rotational shaft of the pumping means is the water conduit. A first bevel gear provided on the rotating shaft of the rotational power generating means, a second bevel gear provided on the rotating shaft of the pumping means, and the first bevel gear It is preferable that the rotational power from the rotational power generating means is transmitted to the pumping means by the power transmission means comprising the bevel gear and the third bevel gear meshing with the second bevel gear. If comprised in this way, the rotational power of a rotational power generation means will be transmitted to a pumping means via the power transmission means which consists of a 1st bevel gearwheel, a 2nd bevel gearwheel, and a 3rd bevel gearwheel, and a pumping means will be rotated. Can be made.

  In addition, it is preferable that the rotating shaft is pivotally supported by other than the water conduit and the pumping pipe, and at least the portion that is pivotally supported maintains water tightness. If comprised in this way, a rotating shaft can be pivotally supported by the bearing by which watertightness was hold | maintained.

  Further, it is preferable that the rotational power generation means and the pumping means are water wheels. If comprised in this way, the seawater led in the conduit will collide with the blade | wing provided around the water turbine, and the pressure and flow velocity of seawater can be converted into rotational power. Moreover, when the water wheel arrange | positioned in a pumping pipe rotates, the seawater after electric power generation receives a pumping effect and is pumped up.

  Further, the rotational power generating means and the pumping means are disposed so as to be rotatable in a direction substantially orthogonal to the water flow, a rotational shaft is provided extending to the power generation chamber side, and is provided on the rotational shaft of the rotational power generating means. A first bevel gear disposed; a second bevel gear disposed on a rotating shaft of the pumping means; a third bevel gear meshing with the first bevel gear at an end; and the second bevel gear. It is preferable that the rotational power from the rotational power generating means is transmitted to the pumping means by the power transmission means comprising a rotatable connecting rod having a fourth bevel gear meshing with the bevel gear. If comprised in this way, rotational power generation means via the power transmission means which consists of a 1st bevel gear, a 2nd bevel gear, and a connecting rod provided with a 3rd bevel gear and a 4th bevel gear at the end. Is transmitted to the pumping means, and the pumping means can be rotated.

  The rotational power generating means and the pumping means include a watertight case at a lower portion thereof, and the first bevel gear, the second bevel gear, the third bevel gear, A connecting rod receiver in which a fourth bevel gear and the rotating shaft are housed, and the connecting rod is inserted between the watertight case on the rotational power generating means side and the watertight case on the pumping means side. Is preferably constructed. If comprised in this way, a bevel gear and a connecting rod can be rotated inside a watertight case and a connecting rod receptacle which seawater does not enter.

  Further, it is preferable that the rotational power generation means and the pumping means are screw propellers. If comprised in this way, the seawater led in the water guide pipe will collide with the blade | wing of a screw propeller, and the pressure of seawater and the pressure of the flow velocity can be converted into rotational power. Further, when the screw propeller disposed in the pumping pipe rotates, the seawater after power generation is pumped by receiving a pumping action.

As described above, according to the hydroelectric power generation facility of the present invention, the rotational power generating means that rotates by the pressure and flow velocity of the seawater is disposed in the water conduit, and the rotational power generating means is connected to the rotational power generating means in the pumping pipe. The pumping means is rotated by the rotational power of the pump, and the seawater after power generation is pumped by rotating the pumping means, so that the seawater after power generation can be pumped without using electricity. It is possible to provide hydroelectric power generation equipment with high power generation efficiency.
In addition, power is generated by dropping seawater into the underground power generation room, pumping up the seawater after power generation, and draining the water from the reservoir at the time of submersion to continuously generate power using the sea level difference of seawater. It is possible to provide a hydroelectric power generation facility that can

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The members, arrangements, and the like described below are not intended to limit the present invention and can be variously modified within the scope of the gist of the present invention.

  1 and 2 relate to an embodiment of the present invention, FIG. 1 is an explanatory diagram of a hydroelectric power generation facility, and FIG. 2 is an enlarged explanatory diagram of a rotary power generating means and a pumping means of FIG.

  As shown in FIG. 1, a hydroelectric power generation facility S according to the present invention includes a hydro turbine 11 (hydroelectric generator) housed in an underground power generation chamber 10, a water storage PO for storing seawater after power generation, and a subsea surface. The water inlet pipe D disposed so as to taper from the water intake port 12 located in the vicinity of the water turbine 11 to the drainage port 13 located in the vicinity of the hydro turbine 11, and the water inlet PO located from the inlet 16 communicating with the power generation chamber 10. A curved portion 18 having a substantially downward U-shape that is disposed so as to taper toward the outlet 17, protrudes upward from the sea surface toward the outlet 17, and then curves downward until reaching the sea level of the water storage PO. A pumping pipe Y having In addition, a water turbine 30 as a rotational power generation unit is installed in the water guide pipe D, and a water turbine 130 as a pumping unit is installed in the pumping pipe Y.

  The power generation chamber 10 is provided in the basement near the quay, and a hydro turbine 11 as a hydroelectric generator is disposed therein. The hydro turbine 11 is not limited in its shape and size as long as it is a water turbine having a moving blade row rotatable around a rotation axis. In this example, a Pelton turbine is used, but not limited to this, a Francis turbine, a propeller turbine, or the like can also be used.

  In addition, a substation 91 is disposed on the ground directly above the power generation chamber 10. In the control room of the substation 91, the opening and closing operation of the hydro turbine 11 and the opening / closing door 14, which will be described later, is performed. Further, an elevator 90 through which an operator enters and exits from the ground communicates with the power generation chamber 10. The elevator 90 uses a vertical shaft that has been excavated for excavation of the power generation chamber 10.

  Moreover, the water conduit D and the pumping pipe Y are arrange | positioned in parallel in the state spaced apart only the fixed distance. And in the lower part of the power generation chamber 10, the drainage port 13 of the water conduit D and the inflow port 16 of the pumping pipe Y communicate vertically, and the seawater discharged from the hydro turbine 11 flows into the pumping pipe Y side. A tube 19 is provided.

  In this example, a throttle pipe having a pipe diameter a on the intake port 12 side of 5.2 m, a pipe diameter b on the drain outlet 13 side of 3 m 2 and a length of 300 m is used for the water conduit D. Moreover, since the intake 12 is arrange | positioned in the depth of 5-10 m from the sea surface, the intake 12 is maintained so that it may be located under the sea surface at the time of tide. In this example, the inclination angle θ of the water guide pipe D in the soil buried state is set to 25 °.

  The pumping pipe Y is a throttle pipe having a pipe diameter c on the inlet 16 side of 5.2 m and a pipe diameter d on the outlet 17 side of 3 m. The inclination angle θ of the pumping pipe Y in the buried state in the soil is set to 25 ° as with the water guide pipe D. In addition, the pipe diameter of the intake port 12, the drain port 13, the inflow port 16, and the outflow port 17 of the conduit pipe D and the pumping pipe Y, the length (full length) of the pipe, and the inclination angle in the embedded state are limited to the above numerical values. It is not something.

  Further, in the vicinity of the pumping pipe Y, a water reservoir PO for storing the pumped seawater is provided. The peripheral walls 20 and 21 of the water reservoir PO are formed near the coast by concrete blocks or the like, and have a height that prevents seawater from flowing into the water storage space at high tide. In this example, the curved portion 18 of the pumping pipe Y is supported by the peripheral wall 20 on the pumping pipe Y side.

  And the drain pipe 22 provided with the opening-and-closing valve 22a exposed from the sea level L at the time of tide is connected to the bottom part side of the surrounding wall 21 formed in the sea side rather than the surrounding wall 20 which supports the curved part 18. This drain pipe 22 is for draining the seawater stored in the reservoir PO to the sea at the time of tide. In FIG. 1, symbol W indicates the sea level at high tide, and symbol L indicates the sea level at low tide. In this example, the water storage PO is set to a size capable of storing seawater drained by power generation for about one day, but the size of the water storage PO is not limited to this.

  Further, an opening / closing door 14 for opening and closing the inside of the water conduit D by an electric motor (not shown) is provided in the vicinity of the water intake 12 of the water conduit D. Note that a filter may be provided at the water intake 12 in order to reduce damage to the hydraulic turbine 11 due to foreign matter.

  Further, as shown in FIGS. 1 and 2, a water wheel 30 as a rotational power generating means is provided at a predetermined position of the water conduit D, and a water wheel 130 as a water pumping means is provided at a predetermined position of the water pump Y. It is installed inside. The water wheel 30 and the water wheel 130 are connected by a single rotating shaft 32. In this example, although the water turbines 30 and 130 are provided in the approximate center part of the water conduit D and the pumping pipe Y, an attachment position is not restricted to this. However, the range from the upstream part to the central part of the water conduit D and the pumping pipe Y is preferable.

  Further, the water turbines 30 and 130 have a drum shape that can rotate in the water flow direction. Although the length (width) in the direction substantially orthogonal to the water flow is smaller than the diameter of the water wheels 30 and 130 in this example, the size and shape of the water wheel are not limited to this.

  As shown in FIG. 2, the blades 31 and 131 provided around the water turbines 30 and 130 are divided in a direction substantially orthogonal to the water flow. In addition, it is good for the blade | wing 31 of the water wheel 30 to be arrange | positioned by the predetermined angle so that the water wheel 30 may rotate in any one direction. Moreover, you may use what made the shape curved from the center side to the outer side as the blade | wing 31. FIG. Thereby, the seawater led into the water conduit D can collide with the blades 31 of the water turbine 30, and the pressure and flow velocity of the seawater can be converted into rotational power. The blades 131 of the water wheel 130 do not have to be formed in such a shape. However, like the blades 31, the blades 131 may be disposed at a predetermined angle or may be curved. .

  The turbines 30 and 130 are provided with rotating shafts 32, 37, and 137 that rotate together with the turbines 30 and 130, respectively. In addition, an intermediate space 70 is formed in a portion between the water guide pipe D and the water pump pipe Y in which the water turbines 30 and 130 are installed, and the water turbine 30 and the water turbine 130 are connected by the rotation shaft 32.

  Further, the rotary shafts 32, 37, and 137 are pivotally supported except for the water guide pipe D and the water pump pipe Y. In this example, the rotary shaft 32 is inserted into a substantially cylindrical rotary bearing 33, and the rotary shafts 37 and 137 are inserted into substantially cylindrical rotary bearings 38 and 138. The rotary shafts 32, 37, and 137 are rotatably supported by bearings 75 provided inside the rotary bearings 33, 38, and 138.

  In this example, the side portions of the water turbines 30 and 130 where the blades 31 and 131 are not provided have a double structure, the non-rotating portions 35 and 135 to which the rotary bearings 33, 38, and 138 are fixed, and the blades 31 and 131. It is comprised by the rotation parts 34 and 134 which are connected with the waterwheel main body provided with and rotate with respect to the non-rotation parts 35 and 135. In addition, a pair of non-rotating parts 35 and 135 provided on both sides of the turbine body are connected by connecting members 36 and 136 at predetermined positions.

  Further, one end of the rotation shaft 32 is fixed to the rotation unit 34 on the medium space 70 side, and the other end is fixed to the rotation unit 134 on the medium space 70 side. The end of the rotary bearing 33 is fixed substantially at the center of the non-rotating parts 35 and 135 on the intermediate space 70 side, and the rotary shaft 32 is inserted into the rotary bearing 33. The rotary bearing 33 passes through the pipe peripheral wall 15 of the water conduit D or the pump pipe Y, and is fixed to the pipe peripheral wall 15 by known fixing means such as bolts and nuts.

  In addition, one end of the rotary bearings 38 and 138 is fixed at substantially the center of the non-rotating portion 35 and 135 to which the rotary bearing 33 is not fixed. The other ends of the rotary bearings 38 and 138 pass through the pipe peripheral wall 15 of the water guide pipe D or the water pump pipe Y and are fixed to the pipe peripheral wall 15. The rotary shafts 37 and 137 extending from the non-rotating portions 35 and 135 are inserted into the rotary bearings 38 and 138.

  As a result, when the water turbine 30 is rotated by the seawater that has flowed into the water conduit D, the rotary shaft 32 rotates together with the water turbine 30, and the water turbine 130 is rotated by the rotation of the rotary shaft 32.

  The bearing portion is kept watertight by a shaft seal device (not shown). Further, a sealing material for maintaining watertightness is attached to a portion of the rotary bearings 33, 38, and 138 penetrating the pipe peripheral wall 15 of the water guide pipe D and the pumping pipe Y, and the rotary bearings 33, 38, and 138 are installed. It is comprised so that seawater may not enter the inside or the middle space 70.

  The structure of the water wheels 30 and 130 and the arrangement structure of the rotary shafts 32, 37, and 137 and the rotary bearings 33, 38, and 138 are not limited to this example, and the water wheel in the water conduit D is known by a known technique. What is necessary is just to be comprised so that the rotational power of 30 may be transmitted to the water turbine 130 in the pumping-up pipe Y. FIG.

  Next, a power generation method using the hydroelectric power generation facility S according to this example will be described. First, the open / close door 14 is opened according to a command from the substation 91, and seawater is poured into the water conduit D from the water intake 12. Then, the water turbine 30 rotates in the flowing direction by the pressure and flow velocity of the seawater that flows into the water guide pipe D.

  When the water turbine 30 rotates, the rotation shaft 32 rotates, and the water wheel 130 connected to the rotation shaft 32 is rotated in the same direction as the water wheel 30. As described above, the turbine 30 and the turbine 130 are connected by the rotation shaft 32, so that the rotational power of the turbine 30 in the water conduit D is transmitted to the turbine 130 in the pumping pipe Y via the rotation shaft 32. .

  The seawater flowing down the water conduit D has its flow velocity increased not only by the potential energy resulting from the height difference but also by the throttle tube structure while passing through the water conduit D. And the hydro turbine 11 in the power generation chamber 10 rotates with the seawater dropped at high speed, and electric power generation is performed.

  The seawater after power generation falls vertically in the communication pipe 19 from the power generation chamber 10, and then changes direction and flows into the pumping pipe Y. At this time, due to the rotation of the water turbine 130, the seawater is pumped up by the pumping force generated by the rotation of the water turbine 130 and the increase in the flow velocity due to the throttle pipe structure of the pumping pipe Y, and is discharged into the water storage PO.

  Thus, the seawater that has flowed into the pumping pipe Y is pushed up while its flow velocity is supplemented by the pumping action of the water turbine 130 and increased by the throttle pipe structure. As a result, the seawater after power generation can be pumped without using electricity, and a hydroelectric power generation facility S with good power generation efficiency can be obtained.

  The seawater pumped from the power generation chamber 10 to the water storage PO is once stored in the water storage PO and then drained into the sea through the drain pipe 22 by opening the on-off valve 22a at the time of tide.

  The outlet 17 of the pump pipe Y is located a few meters below the sea level on the intake 12 side. Further, the seawater of the reservoir PO is drained to the sea at the time of tide, and the sea level of the reservoir PO is taken to the inlet 12 side. By making it lower than the sea level, continuous power generation is possible.

  In addition, although the example which produces electric power using the tide level difference of seawater was shown in this example, the place which provides the hydroelectric power generation equipment S is not limited to the sea. In other words, the hydroelectric power generation facility S of this example is only required to be provided at a place where tide is full, and it is also possible to generate power using ground water such as a river or a lake.

  FIG. 3 is an enlarged explanatory view of a rotating power generating means and a pumping means showing another example. The same members as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted. As shown in FIG. 3, in this example, as in the above-described embodiment, a water wheel 30 is provided as a rotational power generating means at a predetermined position of the water conduit D, and as a pumping means at a predetermined position of the pump pipe Y. The water wheel 130 is installed inside. The water wheels 30 and 130 are disposed so as to be rotatable in the water flow direction.

  Moreover, the rotating shafts 42 and 142 which rotate with the water wheels 30 and 130 are arrange | positioned at the water wheels 30 and 130 of this example. The rotating shafts 42 and 142 extend from substantially the center of the rotating portions 34 and 134 on the intermediate space 70 side. The rotary shafts 42 and 142 are inserted into substantially cylindrical rotary bearings 43 and 143 and are rotatably supported by bearings 75 provided inside the rotary bearings 43 and 143.

  The rotary bearings 43 and 143 have one end fixed to the approximate center of the non-rotating portions 35 and 135 on the middle space 70 side, and the other end penetrating the pipe peripheral wall 15 of the water guide pipe D and pumping pipe Y. Located in. Further, the rotary bearings 43 and 143 are fixed to the pipe peripheral wall 15.

  Thereby, when the water turbine 30 is rotated by the seawater flowing into the water guide pipe D, the rotating shaft 42 rotates together with the water turbine 30. The rotating shaft 42 of the water wheel 30 extends to the pumping pipe Y side, the rotating shaft 142 of the water wheel 130 extends to the water guide pipe Y side, and one ends of the rotating shafts 42 and 142 extend to the intermediate space 70.

  The bearing portion is kept watertight by a shaft seal device (not shown). In addition, a sealing material for maintaining watertightness is attached to a portion where the rotary bearings 43 and 143 pass through the pipe peripheral wall 15 of the water guide pipe D and the water pump pipe Y, and the inside of the rotary bearings 43 and 143 and the middle It is configured so that seawater does not enter the space 70.

  In the intermediate space 70, power transmission means 41 for transmitting the rotational power of the water turbine 30 in the water conduit D to the water turbine 130 in the water pump Y is disposed. The power transmission means 41 is disposed on the rotation shaft 42 of the water wheel 30 and is disposed on the rotation shaft 142 of the water wheel 130 and is rotated on the water flow direction. It is constituted by a bevel gear and a third bevel gear that meshes with the first bevel gear and the second bevel gear and is rotatable in a direction substantially orthogonal to the water flow. In this example, the first bevel gear disposed on the rotation shaft 42 is 80a, the second bevel gear disposed on the rotation shaft 142 is 80c, the first bevel gear and the second bevel gear. A third bevel gear meshing with the bevel gear is set to 80b.

  A support member 46 having one end fixed to the pipe peripheral wall 15 of the water conduit D and the other end fixed to the pipe peripheral wall 15 of the water pump pipe Y is disposed in the middle space 70, and the bevel gear 80 b is a rotating member 47. It is connected to the support member 46 via The rotating member 47 has one end fixed to the bevel gear 80 b and the other end rotatably connected to the support member 46.

  If comprised in this way, if seawater is poured in into the water conduit D from the water intake 12, the water turbine 30 will rotate in a flow direction with the pressure and flow velocity of the seawater which flowed into the water conduit D. When the water turbine 30 rotates, the rotating shaft 42 connected to the water wheel 30 rotates in the same direction as the water wheel 30. In this example, the case where the water wheel 30 and the rotating shaft 42 rotate in the direction of arrow A in FIG. 3 will be described. A bevel gear 80a is disposed on the rotating shaft 42. When the rotating shaft 42 rotates, the bevel gear 80a rotates in the same direction as the water turbine 30 (the direction of arrow A in the figure).

    When the bevel gear 80a rotates in the direction of arrow A in the figure, the bevel gear 80b rotates in the direction of arrow B in the figure. Further, when the bevel gear 80b is rotated, the bevel gear 80c is rotated in the direction of arrow C in the drawing, and the rotation shaft 142 is rotated. Then, the rotating shaft 142 rotates in the direction of arrow C in the drawing, whereby the water turbine 130 connected to the rotating shaft 142 is rotated in the direction opposite to that of the water turbine 30 (direction of arrow C in the drawing). Thus, in this example, the rotational power of the water wheel 30 in the water conduit D is transmitted to the water wheel 130 in the water pump Y through the power transmission means 41 including the three bevel gears 80a, 80b, and 80c.

  Then, when the seawater after power generation flows into the pumping pipe Y, the water turbine 130 rotates in the direction of arrow C in the figure, so that the seawater is pumped by the rotation of the water turbine 130 and the flow velocity due to the throttle pipe structure of the pumping pipe Y. The water is pumped up by the action of increasing the amount of water and discharged into the water storage PO. Thus, the seawater that has flowed into the pumping pipe Y is pushed up while its flow velocity is supplemented by the pumping action of the water turbine 130 and increased by the throttle pipe structure. As a result, the seawater after power generation can be pumped without using electricity, and a hydroelectric power generation facility S with good power generation efficiency can be obtained.

  In this example, straight bevel gears are used as the bevel gears 80a, 80b, and 80c, but bevel gear bevel gears and curved bevel gears may be used.

  4 and 5 relate to another embodiment of the present invention, FIG. 4 is an explanatory view of a hydroelectric power generation facility, and FIG. 5 is an enlarged explanatory view of the rotating power generating means and the pumping means of FIG. The same members as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In this example, a screw propeller 50 as a rotational power generation means is installed in the water conduit D, and a screw propeller 150 as a pumping means is installed in the pump pipe Y. As shown in FIG. 4, the screw propellers 50 and 150 are disposed so as to be rotatable in a direction substantially orthogonal to the water flow. In this example, the screw propellers 50 and 150 are provided at substantially the center of the water guide pipe D and the water pump pipe Y.

  As shown in FIG. 5, the screw propellers 50 and 150 are configured by attaching a plurality of blades 51 and 151 to boss portions 56 and 156. The rotating shafts 52 and 152 are attached below the boss portions 56 and 156. The blades 51 and 151 are curved from the boss portions 56 and 156 to the outer peripheral side, and are attached to the boss portions 56 and 156 at a predetermined angle. Thereby, seawater collides with a propeller, and the pressure and flow velocity of seawater can be converted into rotational power. The size and shape of the screw propellers 50 and 150 are not limited to this example.

  Further, frame bodies 53 and 153 are arranged on the outer peripheral side of the screw propellers 50 and 150. The frames 53 and 153 are fixed to the pipe peripheral wall 15 of the water guide pipe D and the water pump pipe Y by fixing means 54 and 154 having a substantially C-shaped cross section. The fixing means 54 and 154 of this example have web portions protruding from the water guide pipe D and the water pump pipe Y, and are fixed in the ground.

  Support members 55 and 155 are installed on the frame bodies 53 and 153. The support members 5 and 155 are provided in a pair with a screw propeller interposed therebetween. The boss portions 56 and 156 are rotatably connected to the substantially central portions of the support members 55 and 155 via a bearing (not shown).

  Further, rotating shafts 52 and 152 extending to the power generation chamber 10 side are attached to the boss portions 56 and 156, and a first bevel gear and a second bevel gear are provided at the lower ends of the rotating shafts 52 and 152. Is arranged. In this example, the first bevel gear disposed on the rotating shaft 52 of the screw propeller 50 is 80e, and the second bevel gear disposed on the rotating shaft 152 of the screw propeller 150 is 80h. The bevel gears 80e and 80h are disposed so as to be rotatable in a direction substantially orthogonal to the water flow.

  Furthermore, watertight cases 65 and 165 that maintain watertightness are disposed on the support member 55 (not shown) on the side where the rotating shafts 52 and 152 extend. And between the watertight case 65 by the side of the conduit D and the watertight case 165 by the side of the pumping pipe Y, the substantially cylindrical connection rod holder 63 is constructed. The connecting rod receiver 63 is disposed so as to pass through the pipe peripheral wall 15 of the water guide pipe D and the pumping pipe Y and the watertight cases 65 and 165, and the end portions thereof are located in the watertight cases 65 and 165. 62 is inserted. The connecting rod 62 of this example is rotatably supported by a bearing 75 provided inside the connecting rod receiver 63. The connecting rod receiver 63 is fixed to the pipe peripheral wall 15 of the water guide pipe D and the water pump pipe Y.

  A third bevel gear that meshes with the bevel gear 80e and is rotatable in the water flow direction is disposed at the end of the connecting rod 62 located in the watertight case 65, and the connecting rod located in the watertight case 165 is provided. A fourth bevel gear that meshes with the bevel gear 80 h and is rotatable in the water flow direction is disposed at the end of 62. In this example, the third bevel gear that meshes with the bevel gear 80e is 80f, and the fourth bevel gear that meshes with the bevel gear 80h is 80g.

  That is, in the watertight case 65, the rotating shaft 52 extending downward from the screw propeller 50, the bevel gear 80e disposed at the lower end of the rotating shaft 52, and the end of the connecting rod 62 are disposed. A bevel gear 80f that meshes with the bevel gear 80e is housed.

  Further, in the watertight case 165, a rotating shaft 152 extending downward from the screw propeller 150, a bevel gear 80h disposed at the lower end portion of the rotating shaft 152, and an end portion of the connecting rod 62 are provided. A bevel gear 80g meshing with the bevel gear 80h is housed.

  As described above, in this example, the rotational power of the screw propeller 50 is transmitted to the screw propeller 150 via the power transmission means 61 including the connecting rod 62 having the bevel gears 80e and 80h and the bevel gear 80f and the bevel gear 80g at the ends. It is configured to be transmitted to.

  The bearing portion is kept watertight by a shaft seal device (not shown). In addition, a sealing material for maintaining watertightness is attached to a connection portion between the watertight cases 65 and 165. Thereby, it is comprised so that seawater may not enter the inside of the connecting rod holder 63 and the watertight cases 65 and 165. As the watertight cases 65, 165, a watertight case made of acrylic or the like can be used.

  Next, a power generation method using the hydroelectric power generation facility S according to this example will be described. The description of the same parts as those in the above embodiment is omitted.

  First, when the open / close door 14 is opened and seawater is poured from the water intake 12 into the water conduit D, the screw propeller 50 is rotated by the pressure and flow velocity of the seawater. In this example, the case where the screw propeller 50 rotates in the direction of arrow E in FIG. 5 will be described. When the screw propeller 50 rotates in the direction of arrow E in the figure, the rotating shaft 52 connected to the screw propeller 50 rotates in the same direction as the screw propeller 50. The rotating shaft 52 is provided with a bevel gear 80e. When the rotating shaft 52 rotates, the bevel gear 80e rotates in the same direction as the screw propeller 50 (the direction of arrow E in the figure).

  When the bevel gear 80e rotates in the direction of arrow E in the figure, the bevel gear 80f rotates in the direction of arrow F in the figure. As the bevel gear 80f rotates, the connecting rod 62 rotates in the same direction as the bevel gear 80f (in the direction of arrow F in the figure), and the bevel gear 80g rotates in the direction of arrow G in the figure. Then, when the bevel gear 80g rotates in the direction of arrow G in the figure, the bevel gear 80h rotates in the direction of arrow H in the figure.

  Further, when the bevel gear 80h is rotated, the rotating shaft 152 is rotated, and the screw propeller 150 connected to the rotating shaft 152 is rotated in the direction opposite to the screw propeller 50 (the direction indicated by the arrow H in the drawing). As described above, in this example, the rotational power of the screw propeller 50 in the water conduit D is obtained by using the power transmission means 61 including the connecting rod 62 provided with the bevel gears 80e and 80h and the bevel gear 80f and the bevel gear 80g at the ends. To the screw propeller 150 in the pumping pipe Y.

  In addition, the seawater flowing down the water conduit D is increased not only in the potential energy resulting from the height difference, but also in the water turbine 11 in the power generation chamber 10 while the flow velocity is increased by the throttle tube structure while passing through the water conduit D. Electricity is generated by rotating it.

  Then, the seawater after power generation falls vertically in the communication pipe 19 from the power generation chamber 10, and then changes direction and flows into the pumping pipe Y. At this time, since the screw propeller 150 is rotated in the direction of the arrow H in the figure, the seawater is pumped by the action of the pumping force by the rotation of the screw propeller 150 and the increase in the flow velocity by the throttle pipe structure of the pumping pipe Y, Drained into the water storage PO. In this way, the seawater flowing into the pumping pipe Y is pushed up while its flow velocity is supplemented by the pumping action of the screw propeller 150 and is increased by the throttle pipe structure. As a result, the seawater after power generation can be pumped without using electricity, and a hydroelectric power generation facility S with good power generation efficiency can be obtained.

  In this example, the screw propeller 50 is rotated in the direction of arrow E in the figure, and the screw propeller 150 is rotated in the direction of arrow H in the figure. However, the screw propeller 50, You may comprise 150 so that it may rotate in the reverse direction to this example.

It is explanatory drawing of the hydroelectric power generation equipment which concerns on one Embodiment of this invention. It is an expansion explanatory view of the rotation power generation means and pumping means of FIG. It is expansion explanatory drawing of the rotational power generation means and pumping means which show another example. It is explanatory drawing of the hydroelectric power generation equipment which concerns on other embodiment of this invention. FIG. 5 is an enlarged explanatory view of a rotational power generation unit and a pumping unit of FIG. 4.

Explanation of symbols

10 Power Generation Room 11 Hydro Turbine (Hydroelectric Generator)
DESCRIPTION OF SYMBOLS 12 Water intake port 13 Drain port 14 Opening and closing door 15 Pipe surrounding wall 16 Inlet port 17 Outlet port 18 Curved part 19 Communication pipe 20, 21 Reservoir peripheral wall 22 Drain pipe 22a On-off valve 30, 130 Water wheel (rotating means)
31, 131 Blade 32, 37, 137 Rotating shaft 33, 38, 138 Rotating bearing 34, 134 Rotating portion 35, 135 Non-rotating portion 36, 136 Connecting member 41 Power transmission means 42, 142 Rotating shaft 43, 143 Rotating bearing 46 Support Member 47 Rotating member 50,150 Screw propeller (rotating means)
51,151 Blade 52,152 Rotating shaft 53,153 Frame 54,154 Fixing means 55,155 Support member 56,156 Boss part 61 Power transmission means 62 Connecting rod 63 Connecting rod receiver 65,165 Watertight case 70 Medium space 75 Bearing 80a, 80b, 80c, 80e, 80f, 80g, 80h Bevel gear 90 Elevator 91 Substation D Water transfer pipe PO Reservoir Y Pumping pipe S Hydroelectric power generation facility W Sea level at high tide L Sea level at low tide

Claims (8)

In hydroelectric power generation equipment that can generate electricity continuously by dropping seawater into the underground power generation room, pumping the seawater after power generation and draining it into the sea,
A reservoir that has a peripheral wall with a height that prevents seawater from flowing into the reservoir space at high tide, and a drainage pipe with an open / close valve that is exposed from the sea surface at the time of tide at the bottom of the peripheral wall. When,
A hydroelectric generator housed in the underground power generation room,
A water conduit arranged so as to taper from a water intake port located below the sea surface toward a water discharge port located in the vicinity of the hydroelectric generator;
It is arranged to taper from the inlet communicating with the power generation chamber toward the outlet located in the water reservoir, and once protrudes upward from the sea surface toward the outlet, it reaches below the sea level of the water reservoir. A pumping pipe having a curved portion curved downward until,
Rotational power generating means disposed in the water conduit and rotated by the pressure and flow velocity of seawater;
Hydropower characterized by comprising: a pumping means connected to the rotary power generating means and disposed in the pumping pipe, and rotated by the rotary power of the rotary power generating means to pump up seawater after power generation. Power generation equipment.   The hydroelectric power generation facility according to claim 1, wherein the rotating power generation unit and the pumping unit are connected by a single rotating shaft and are rotatably arranged in a water flow direction. The rotational power generating means and the pumping means are disposed so as to be rotatable in a water flow direction,
The rotating shaft of the rotational power generating means extends to the pumping pipe side, and the rotating shaft of the pumping means extends to the water conduit pipe side,
A first bevel gear disposed on the rotation shaft of the rotational power generating means; a second bevel gear disposed on the rotation shaft of the pumping means; the first bevel gear and the second bevel. 2. The hydroelectric power generation facility according to claim 1, wherein the rotational power from the rotational power generation means is transmitted to the pumping means by power transmission means comprising a third bevel gear meshing with the gear.   4. The hydroelectric power generation facility according to claim 2, wherein the rotating shaft is pivotally supported except for the water conduit and the pumping pipe, and at least the pivotally supported portion maintains water tightness. 5.   The hydroelectric power generation facility according to any one of claims 2 to 4, wherein the rotating power generation means and the pumping means are water turbines. The rotational power generation means and the pumping means are disposed so as to be rotatable in a direction substantially orthogonal to the water flow, and the rotation shaft extends to the power generation chamber side,
A first bevel gear disposed on a rotating shaft of the rotational power generating means;
A second bevel gear disposed on the rotating shaft of the pumping means;
The rotational power is provided by a power transmission means comprising a rotatable connecting rod having a third bevel gear meshing with the first bevel gear and a fourth bevel gear meshing with the second bevel gear at the end. The hydroelectric power generation facility according to claim 1, wherein rotational power from the generating means is transmitted to the pumping means.   The rotational power generation means and the water pumping means include a watertight case at a lower portion thereof, and the first bevel gear, the second bevel gear, the third bevel gear, and the fourth are disposed inside the watertight case. A connecting rod support, in which the connecting rod is inserted, is installed between the watertight case on the rotational power generating means side and the watertight case on the pumping means side. The hydroelectric power generation facility according to claim 6, wherein   The hydroelectric power generation facility according to claim 6 or 7, wherein the rotational power generation means and the pumping means are screw propellers.

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