JP3171321U - Hydroelectric generator - Google Patents

Abstract

A hydroelectric generator that can be applied to a riverbed with a step is provided. SOLUTION: A natural river having a level difference in the upper and lower sides is divided into two along the water flow, and a waterfall channel is provided at the bottom part 11 of one of the divided rivers at the center of the bottom, and a V-shaped waterfall slope toward this waterfall channel. The water falling part 20 in which 22 is formed, the hydraulic rotation converter which is installed under the water falling slope 22 and receives the water falling from the water falling slope 22 and converts the energy into rotational motion, and the upstream of the water falling part 20 The power generation chamber 30 in which the power generation device that generates the power by transmitting the rotational motion of the falling water rotary converter is installed, and the downstream of the water falling part 20 is connected to the hydraulic rotary converter to guide the water falling to the hydraulic rotation converter and communicate with the water falling path below. The hydroelectric power generation apparatus 10 formed with the falling water guide wall 35 in which the water discharge channel is formed is installed so that the ceiling portion thereof is flush with the river bed of the upper step portion 12 of the river, and the other upper step portion of the river 12, the upper water flow of the hydroelectric generator 10 The weir 38 taken into water unit 20 is provided. [Selection] Figure 1

Description

  The present invention relates to an improvement of a hydroelectric generator.

  As a hydroelectric power generation technique using river flow energy, Japanese Patent Laid-Open No. 2006-16894 (Patent Document 1) arranges a plurality of hydropower generators along the river width of the river, and converts the water current energy to generate power. Techniques to do this are disclosed.

JP2006-16894

  However, since the technique of Patent Document 1 uses a part of the river flow, sufficient power generation cannot be expected, and even if it can be applied to a flat river bed, it can be applied to a river bed with a level difference. There was a problem that could not be done.

The present invention for solving the above problems has the following features.
That is, the first one of the present invention is to divide a natural river with an up and down step or an artificial river or an irrigation channel with a step up and down along the water flow, and at the bottom of one of the divided rivers, A waterfall section is provided with a V-shaped waterfall slope facing the waterfall path, and a waterfall is installed under the waterfall slope to convert the energy into rotational motion. A hydroelectric rotation converter, a power generation chamber installed upstream of the falling water section and installed with a power generation device that transmits the rotational motion of the falling water rotation converter, and connected downstream of the falling water section. A hydroelectric power generation apparatus in which a falling water guiding wall is formed in which a falling water channel is formed at a lower portion to guide a falling water to the hydraulic rotation converter and communicated with the falling water channel, and a ceiling portion thereof is the same as a river bed of an upper portion of the river Install it so that it is flat. The other of the upper portion of the river is a hydraulic power unit, characterized in that a weir to incorporate upper water flow drainage of the hydraulic power unit.

  In addition, the second of the present invention is a natural river with a step difference in the top or bottom, or an artificial river or irrigation channel with a step difference in the top and bottom. A flat installation space is dug, and in this installation space, a waterfall is provided at the center of the bottom, and a V-shaped waterfall slope is formed toward the waterfall, and is installed under the waterfall slope. A hydraulic rotation converter that receives water from the falling slope and converts the energy into rotational motion, and a power generator that is connected to the upstream side of the falling portion and transmits the rotational motion of the hydraulic rotation converter to generate electricity. Hydroelectric power formed by an installed power generation chamber and a waterfall guide wall that is connected to the downstream side of the waterfall section, guides the waterfall to the hydraulic rotation converter, and has a water discharge channel that communicates with the waterfall channel at the bottom. The ceiling of the power generator It is installed so that it is flush with the river bed of the upper stage, and a water intake weir is provided at the upper step of the step boundary of the river, and the water at the upper stage of the river is transferred to the revetment of the river by the intake weir. The hydroelectric power generator is characterized in that a water intake port to be taken into a water discharge portion of the power generation device and a water discharge port through which water discharged from the water discharge path of the water discharge guide block wall flows to a lower stage portion of the river are provided.

  And it is preferable to use a water wheel or a helical water wheel as a hydraulic rotation converter of a hydroelectric generator.

  According to the present invention, it is possible to take in all of the water flow of the river and efficiently convert the water flow energy into rotational energy. And in the first idea, the hydroelectric power generator itself can be made compact by dividing the river into two and installing the hydroelectric generator on one side and the intake weir on the other side. This is particularly effective in terms of simplifying the construction. In the second device, since only the intake weir is provided in the river and the hydroelectric generator is installed outside the river, the installation work becomes extremely easy and the construction period can be shortened.

  1 is an overall perspective view showing a first embodiment of a hydroelectric generator according to the present invention.   It is sectional drawing which follows the AA line of FIG.   It is a top view which shows the 2nd Example of this invention.   It is sectional drawing which shows another example of the hydraulic rotation converter used for the hydraulic power unit of this invention.

  The hydroelectric power generator 10 applied to the present invention takes in a stream of a river (including natural, artificial, and irrigation canals) from its ceiling, converts it into water and converts it into a rotational motion, and then discharges it downstream and downward. Therefore, it is installed in the lower step part 11 of the river with a step difference in the vertical direction, and the ceiling part is installed so as to be flush with the upper step part 12 of the river.

  The hydroelectric power generation device 10 includes a waterfall unit 20, a hydraulic rotation converter 25, a power generation chamber 30, and a waterfall guide wall 35. The water falling part 20 is formed with a water falling path 21 at the center of the bottom, and V-shaped water falling slopes 22 are formed from both sides toward the water falling path 21. The falling slope 22 works to add a momentum to the water flow by the inclination and to flow into the falling water channel 21.

  Under the falling water slope 22, a hydraulic rotation converter 25 is disposed. In this embodiment, a hydraulic turbine 26 is used as the hydraulic rotation converter 25. Although one water turbine 26 may be used, a pair of water turbines 26 is preferable for receiving flowing water without loss. The water turbine 26 converts flowing water energy into rotational motion.

  The power generation chamber 30 is connected to the upstream side of the falling water portion 20. The power generation chamber 30 can be formed as a unit-type box, and is internally connected to a driving wheel 31 that is attached to a rotating shaft 27 of a water turbine 26, and is connected to the driving wheel 31 by a rotating belt (not shown). A generator (not shown) and the like are provided. Therefore, the rotational energy of the water turbine 26 operates the generator (not shown) through the rotation of the driving wheel 31 coaxial with the rotating shaft 27.

  The falling water guiding wall 35 guides the water flow entering the falling water slope 22 to the falling water channel 21 with the downstream outer wall surface of the power generation chamber 30, and a water discharge channel 36 is formed in the lower part. Since the water discharge channel 36 communicates with the water discharge channel 21, the water flowing through the water turbine 26 flows from the water discharge channel 36 to the lower step portion 11 downstream of the river.

  In the first embodiment of the present invention, the hydroelectric generator 10 is installed in one lower stage 11 of a river divided into two along the water flow, and the other upper stage 12 of the river has this hydroelectric power generation. A water intake weir 38 is provided to guide the water flow to the device 10. The intake weir 38 is not particularly limited as long as it is the upper stage 12 adjacent to the hydroelectric generator 10, but the vicinity of the falling slope 22 of the falling part 20 is most preferable. By thus dividing the river into two parts and installing the hydroelectric generator 10 on one side and the intake weir 38 on the other side, the hydroelectric generator 10 itself can be made compact, and the installation work can be simplified for rivers with a wide river width. This is particularly effective. Note that a plurality of the hydroelectric generators 10 can be installed in parallel.

  According to the first embodiment, the water flow close to the hydroelectric generator 10 is left as it is, and the water flow away from the hydroelectric generator 10 is guided by the intake weir 38 and enters the falling portion 20, and the water flow is accelerated by the falling slope 22. It is carried to the water wheel 26 and rotates the water wheel 26 vigorously. As a result, the water flow energy is converted into rotational motion, and the rotational motion of the water turbine 26 operates a generator (not shown) through the driving wheel 31 in the power generation chamber 30. This makes it possible to use the river flow for power generation without leaving any excess.

  FIG. 3 shows a second embodiment of the present invention. In this embodiment, the hydroelectric power generator 10 is installed beside the river. That is, outside the river, an installation space 40 whose bottom surface is the same as or substantially the same plane as the river bed of the lower step portion 11 of the river is dug, and the ceiling portion of the upper step portion 12 of the river is located in the installation space 40. The hydroelectric generator 10 is installed so as to be flush with the riverbed. The river itself is provided with a water intake weir 39 that guides all the water flow of the river to the hydroelectric generator 10 over the entire width of the upper stage 12 of the step boundary. There are provided a water intake 41 for taking the water flow of the upper stage portion 12 into the water fall portion 20 of the hydroelectric generator 10, and a water discharge port 42 for flowing water from the water discharge passage 36 of the water fall guide wall 35 to the lower step portion 11 of the river. Thus, only the intake weir 39 is provided in the river and the hydroelectric generator 10 is installed outside the river, so that the installation work of the hydroelectric generator 10 and the intake weir 39 becomes extremely easy and the construction period is shortened. be able to.

  Therefore, according to the second embodiment, all of the water flow of the river is taken into the hydroelectric generator 10 outside the river from the intake 41 by the intake weir 39, and the water turbine 26 is passed through the downfall slope 22 of the downfall portion 20. Rotate. The action and effect after rotation are the same as in the first embodiment. Then, the falling water that has passed through the water turbine 26 flows from the water discharge port 42 to the lower stage 11 of the river.

  FIG. 4 shows a helical water wheel 45 as another example of the hydraulic rotation converter 25. The helical water turbine 45 is configured by attaching helical blades 47 around a rotating shaft 46, and is interposed between upper and lower rotary bearings 50 in a state surrounded by a water collecting tube 49 between reinforcing steel frames 48 fixed vertically. It can be rotated freely. A water collecting plate 51 is fixed around the upper portion of the water collecting tube 49 in order to prevent water falling from entering the space outside the tube of the water collecting tube 49 and to collect all the water falling into the spiral water turbine 45.

  A rotation conversion gear portion 53 is connected to the lower shaft end of the rotation shaft 46 via a propeller shaft 52. The rotation conversion gear unit 53 is preferably a differential gear. In the rotation conversion gear portion 53, one idle rotation shaft 54 is rotatably supported by the falling water guide wall 35, and the other power rotation shaft 55 faces the power generation chamber 30. In the power generation chamber 30, a transmission 56 connected to the power rotation shaft 55 and a power generation device 58 connected to the high-speed rotation shaft 57 of the transmission 56 are disposed. Other configurations are the same as those in the first and second embodiments.

  According to this helical water turbine 45, the water flow that has entered the water falling part 20 by the hydroelectric generator 10 of the first and second embodiments is conveyed from the water falling slope 22 to the helical water wheel 45 in the water collecting tube 49, and this helical water wheel 45 The water turbine 45 is rotated vigorously. The longitudinal rotation motion of the helical water wheel 45 is transmitted to the rotation conversion gear unit 53 via the propeller shaft 52 and converted into a lateral rotation motion. As a result, the power rotation shaft 55 rotates, and this rotational motion is converted into high-speed rotation by the transmission 56, and the power generator 58 is operated at a high output.

  The hydroelectric power generation device according to the present invention can be applied to all rivers and irrigation canals that have steps above and below, so if applied on a nationwide scale, it will contribute not only to self-sufficiency of electric energy but also to the development of this type of industry. become.

DESCRIPTION OF SYMBOLS 10 Hydroelectric power generation device 11 Lower stage part 12 Upper stage part 20 Falling part 21 Falling channel 22 Falling slope 25 Hydraulic rotation converter 26 Turbine 30 Power generation room 35 Falling guide wall 36 Intake channel 38, 39 Intake weir 40 Installation space 41 Intake port 42 Outlet 45 helical water wheel

Claims (4)

Divide a natural river with a level difference in the top or bottom or an artificial river or irrigation channel with a level difference in the top and bottom along the water flow, and a sluice channel is provided at the bottom of one of the bisected rivers at the bottom center. A waterfall section in which a V-shaped waterfall slope is formed, a hydraulic rotation converter installed under the waterfall slope to receive waterfall from the waterfall slope and convert its energy into rotational motion, and upstream of the waterfall section A power generation chamber in which a power generation device that generates power by transmitting the rotational motion of the falling water rotation converter is installed, and a lower portion that is connected to the downstream side of the falling water section to guide the falling water to the hydraulic rotation converter. A hydroelectric power generation device having a waterfall guide wall formed with a water discharge channel communicating with the waterfall channel is installed such that the ceiling portion is flush with the riverbed of the upper stage of the river, On the other upper part of the Serial hydroelectric apparatus characterized in that a weir incorporated into drainage portion of the hydraulic power unit. A natural river with steps above and below, or an artificial river or waterway with steps above and below, alongside it, digs an installation space whose bottom is almost the same plane as the riverbed at the bottom of the river, In the installation space, a waterfall is formed in the center of the bottom and a V-shaped waterfall slope is formed toward the waterfall, and the energy received by the waterfall from the waterfall slope installed under the waterfall slope. A hydrodynamic rotation converter that converts the rotary motion into a rotary motion, a power generation chamber that is connected to the upstream side of the falling water portion and that has a power generation device that transmits the rotational motion of the hydraulic rotation converter and generates power, and A hydroelectric power generation device that is provided downstream and has a waterfall guide wall formed with a water discharge channel that guides waterfall to the hydraulic rotation converter and communicates with the waterfall channel at the bottom. It should be flush with the upper riverbed The water intake weir is installed at the upper step of the step boundary of the river, and the intake of the river revetment is taken into the water falling part of the hydroelectric power generation device by the intake weir. And a water discharge port for flowing water discharged from the water discharge channel of the waterfall guide block wall to the lower part of the river. The hydroelectric generator according to claim 1 or 2, wherein the hydroelectric rotation converter of the hydroelectric generator is configured by one or a pair of water turbines. The hydroelectric generator according to claim 1 or 2, wherein the hydroelectric rotation converter of the hydroelectric generator is configured by a helical turbine.

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