WO2012173139A1 - Dispositif générateur de puissance à force de fluide - Google Patents

Dispositif générateur de puissance à force de fluide Download PDF

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Publication number
WO2012173139A1
WO2012173139A1 PCT/JP2012/065114 JP2012065114W WO2012173139A1 WO 2012173139 A1 WO2012173139 A1 WO 2012173139A1 JP 2012065114 W JP2012065114 W JP 2012065114W WO 2012173139 A1 WO2012173139 A1 WO 2012173139A1
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WO
WIPO (PCT)
Prior art keywords
propeller
power
rotating shaft
worm
shaft
Prior art date
Application number
PCT/JP2012/065114
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English (en)
Japanese (ja)
Inventor
忠彦 加藤
Original Assignee
株式会社ユニバンス
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Filing date
Publication date
Application filed by 株式会社ユニバンス filed Critical 株式会社ユニバンス
Publication of WO2012173139A1 publication Critical patent/WO2012173139A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/10—Submerged units incorporating electric generators or motors
    • F03B13/105—Bulb groups
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D15/00—Transmission of mechanical power
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/16—Air or water being indistinctly used as working fluid, i.e. the machine can work equally with air or water without any modification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/30—Arrangement of components
    • F05B2250/31—Arrangement of components according to the direction of their main axis or their axis of rotation
    • F05B2250/311—Arrangement of components according to the direction of their main axis or their axis of rotation the axes being in line
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the present invention relates to a hydrodynamic power generation device, and more particularly to a hydrodynamic power generation device that can suppress loss of shaft power due to one propeller acting as a brake for the other propeller and improve power generation efficiency.
  • hydroelectric power generators that use energy such as ocean currents, tidal currents, rivers, and wind power for power generation are known.
  • One type of fluid power generation device is a propeller type power generation device that allows fluid to flow in the axial direction of the propeller.
  • the propeller type power generation device has a larger rotational reaction force as the number of rotations of the propeller increases. Since the main body that supports the propeller needs to be strong enough to resist the rotational reaction force, the main body must be robust, and the structure of the main body is complicated and the mass is increased. Further, as the rotation speed of the propeller increases, the wind noise of the propeller increases.
  • a hydrodynamic power generation apparatus including a propeller and a generator that converts shaft power generated by a first propeller and a second propeller into electric power (Patent Document 1).
  • Patent Document 1 since the first propeller and the second propeller rotate in reverse, the rotational reaction forces generated in the first propeller and the second propeller are offset and suppressed. Thereby, the structure of the main body can be simplified. Furthermore, wind noise can also be suppressed by the first propeller and the second propeller rotating in the opposite directions.
  • Patent Document 1 discloses a technique for improving the efficiency of connecting the first propeller and the second propeller with a reverse coupling device using a bevel gear and converting the shaft power generated by the first propeller and the second propeller into electric power. Yes.
  • the present invention has been made to solve the above-described problems, and provides a hydrodynamic power generation apparatus that can suppress loss of shaft power due to one propeller serving as a brake for the other propeller and improve power generation efficiency.
  • the purpose is to do.
  • the first propeller is disposed at one end of the main body disposed so that the fluid flow direction and the axial direction coincide with each other.
  • a second propeller that is rotated in a direction opposite to the rotation direction is disposed at the other end of the main body.
  • a second rotating shaft and a first rotating shaft are connected to the second propeller and the first propeller, respectively.
  • the power of the first rotating shaft is transmitted to the first element of the differential device by the first one-way clutch
  • the power of the second rotating shaft is transmitted to the second element of the differential device by the second one-way clutch.
  • the third element engaged with the second element and the first element is rotated.
  • the rotational energy of the first propeller and the second propeller is converted into electric power by a generator.
  • the first one-way clutch causes the first rotation from the first element. Transmission of power to the shaft is interrupted. Therefore, it is possible to prevent the first propeller having a low rotational speed from becoming a brake for the second propeller having a high rotational speed.
  • the second one-way clutch causes the second rotation shaft to move from the second element. Transmission of power to is interrupted. Therefore, it is possible to prevent the second propeller having a small rotational speed from becoming a brake for the first propeller having a large rotational speed. Thereby, the loss of shaft power by one propeller becoming a brake of the other propeller can be controlled. As a result, there is an effect that the power generation efficiency by the rotational energy of the first propeller and the second propeller can be improved.
  • the power generation is arranged outside the main body by the output shaft having one end connected to the third element and the other end extending in the direction perpendicular to the axis of the main body. Shaft power is transmitted to the machine. A rotor connected to the other end of the output shaft is rotated integrally with the output shaft, and electric power is generated between the rotor and a stator disposed at a predetermined interval.
  • the generator By providing a generator outside the main body as described above, installing the generator inside the main body can be omitted. Since the main body needs to be provided at a position where the fluid passes in the axial direction (for example, at a high place or underwater), it is difficult to maintain and inspect the generator when the main body is provided with the generator. On the other hand, by providing a generator outside the main body, the generator can be provided regardless of the position where the fluid passes (for example, in a low place or on the water). This has the effect of improving the performance.
  • the first propeller and the second propeller rotate in opposite directions and have different rotational speeds.
  • the power that is generated has a different frequency.
  • an auxiliary device such as a frequency converter is required.
  • the rotation direction of the first element that rotates in the opposite direction and the third element that engages with the second element is always one direction. Since the shaft power of the output shaft connected to the third element is converted into electric power, an auxiliary device such as a frequency adjusting device can be omitted, and in addition to the effect of claim 1, the device can be simplified. .
  • the first element and the second element constituted by the pair of worm wheels and the third element constituted by the worm engage with each other.
  • the worm wheel has a pair of disks opposed to each other with the worm interposed therebetween, and is projected from the opposed surfaces of the pair of disks toward the worm side and at the center of the protrusion.
  • a spherical roller pin configured to be rotatable. Since the roller pin is engaged with a worm groove formed in a spiral shape along the outer peripheral surface of the worm, loss due to sliding friction can be reduced, and transmission efficiency can be improved. Since the loss in the differential device is reduced, the power generation efficiency can be further improved in addition to the effect of the third aspect.
  • the worm groove is formed in an arc shape in cross section, the backlash with the spherical roller pin engaged with the worm groove can be reduced. Thereby, the vibration and noise which generate
  • FIG. 1 is a side view of the hydrodynamic power generator in the first embodiment
  • (b) is a skeleton diagram schematically showing a power transmission mechanism of the hydrodynamic power generator. It is an axial sectional view of a power transmission device.
  • 3A is a cross-sectional view of the differential device taken along line IIIa-IIIa in FIG. 2
  • FIG. 3B is a cross-sectional view of the differential device taken along line IIIb-IIIb in FIG.
  • (A) is a skeleton diagram schematically showing the power transmission mechanism of the hydrodynamic power generation device in the second embodiment
  • (b) is a schematic diagram of the power transmission mechanism of the hydrodynamic power generation device in the third embodiment.
  • FIG. It is a side view of the fluid power generator in a 4th embodiment.
  • FIG. 1A is a side view of the hydrodynamic power generation apparatus 1 in the first embodiment.
  • the hydroelectric power generator 1 is configured as a wind power generator.
  • a support column 3 is installed on a base 2 embedded in the ground, and a main body (nacelle) 4 is disposed above the support column 3 approximately horizontally via a yaw driving device 3a.
  • a yaw driving device 3a By arranging the main body 4 on the upper portion of the support column 3, wind force can be effectively received.
  • the yaw driving device 3a is configured to be rotatable in the horizontal direction, the yaw driving device 3a can change the direction of the main body 4 with respect to fluctuations in the wind direction.
  • the first propeller 5 and the second propeller 6 are members for converting wind force into rotational power, and are disposed at one end and the other end of the main body 4.
  • the hub 5 a receives the wind force and the hub 5 a. , 6a to rotate the blades 5b, 6b.
  • the first propeller 5 and the second propeller 6 are upstream (or downstream) when the main body 4 is oriented so that the first propeller 5 is located on the windward (upstream) side and the second propeller 6 is located on the leeward (downstream) side.
  • the first propeller 5 and the second propeller 6 are designed so that the rotation directions are opposite to each other.
  • FIG. 1B is a skeleton diagram schematically showing the power transmission mechanism of the hydroelectric power generator 1. Note that the right-pointing arrow shown in FIG. 1B is the direction of the wind.
  • the hub 5a of the first propeller 5 is connected to the first rotating shaft 7, and the hub 6a of the second propeller 6 is connected to the second rotating shaft 8, and the first rotating shaft 7 and The second rotating shaft 8 is connected to the power transmission device 10.
  • the power transmission device 10 is a device for switching the power of the first rotating shaft 7 and the second rotating shaft 8, and includes a first one-way clutch 20, a second one-way clutch 30, and a differential device 40, and a main body. 4 is installed internally.
  • the first one-way clutch 20 is a device for transmitting the power of the first rotating shaft 7 to the differential device 40, and for interrupting the transmission of power from the differential device 40 to the first rotating shaft 7.
  • An annular first rotating member 21 disposed at a predetermined interval on the outer periphery of the shaft 7, and a circumferential direction between the outer peripheral surface of the first rotating shaft 7 and the inner peripheral surface of the first rotating member 21.
  • a plurality of first sprags 22 are provided. When the first sprag 22 is engaged with the first rotating shaft 7 and the first rotating member 21, power is transmitted, and the engagement between the first rotating shaft 7 and the first rotating member 21 and the first sprag 22 is released. This interrupts the transmission of power.
  • the second one-way clutch 30 is a device for transmitting the power of the second rotary shaft 8 to the differential device 40, while blocking the transmission of power from the differential device 40 to the second rotary shaft 8, and the second rotation.
  • An annular second rotating member 31 disposed on the outer periphery of the shaft 8 at a predetermined interval, and in a circumferential direction between the outer peripheral surface of the second rotating shaft 8 and the inner peripheral surface of the second rotating member 31.
  • a plurality of second sprags 32 disposed therein. The second sprag 32 is engaged with the second rotary shaft 8 and the second rotary member 31 to transmit power, and the engagement between the second rotary shaft 8 and the second rotary member 31 and the second sprag 32 is released. This interrupts the transmission of power.
  • the differential device 40 is a device for inverting and connecting the first rotating shaft 7 and the second rotating shaft 8.
  • the differential device 40 includes a first element 41 to which power of the first rotating shaft 7 is input and the second rotating shaft 8.
  • a second element 44 to which power is input and a third element 47 that is engaged with and rotated by the second element 44 and the first element 41 are provided.
  • the first element 41 is configured to be rotatable integrally with the first rotating member 21, and the second element 44 is configured to be rotatable integrally with the second rotating member 31.
  • the third element 47 is connected to one end of the output shaft 9.
  • the output shaft 9 is a member for outputting rotational power in the direction perpendicular to the axis of the main body 4, and the other end is extended to the generator 50.
  • the generator 50 is a device for converting the shaft power of the output shaft 9 into electric power.
  • the rotor 51 is rotated integrally with the output shaft 9, and the electric power is provided at a predetermined interval from the rotor 51.
  • a stator 52 for generating The rotor 51 includes a permanent magnet or an electromagnet, and the stator 52 includes a coil.
  • the generator 50 (alternator) is disposed outside the main body 4. Since the generator 50 is disposed outside the main body 4, the generator 50 can be provided at a low place (ground) of the column 3 close to the base 2 (see FIG. 1A). Thereby, the maintenance and inspection of the generator 50 can be facilitated, and the maintainability of the generator 50 can be improved.
  • the shaft powers of the first propeller 5 and the second propeller 6 are separately converted into electric power
  • the first propeller 5 and the second propeller 6 rotate in opposite directions and have different rotational speeds.
  • the electric power obtained by the second propeller 6 has a different frequency.
  • an auxiliary device such as a frequency converter is required.
  • the rotation direction of the first element 41 and the third element 47 that engage with the second element 44 rotating in opposite directions can always be one direction.
  • an auxiliary device such as a frequency adjusting device can be omitted, and the device can be simplified. It is also possible to provide a speed increaser that increases the speed of the output shaft 9.
  • the main body 4 can be reduced in weight.
  • the hydroelectric power generation device 1 it is necessary to lift the main body 4 above the support post 3 after the support column 3 is erected, but the main body 4 can be reduced in weight, so the hydrodynamic power generation device 1 is constructed. Work can be facilitated.
  • the first propeller 5 and the second propeller 6 that are rotated by wind power are low-rotation (approximately 10 to 50 rotations / minute depending on the model and size). Even if the speed is increased by a speed increaser (not shown), the generator 50 having a low rotation speed and a high torque is suitable.
  • the low-rotation / high-torque generator 50 has a problem that it is heavy. According to the hydrodynamic power generation device 1, since it is not necessary to install a generator in the main body 4, the optimum generator 50 can be selected without considering the weight of the generator 50. Therefore, the low-rotation / high-torque generator 50 can be provided in a low place (ground), and the output of power generation can be increased.
  • the first rotary shaft 7 and the differential device 40 are connected by the first one-way clutch 20, and the second rotary shaft 8 and the differential device 40 are connected by the first one. 2 are connected by a one-way clutch 30.
  • the power of the first rotating shaft 7 is transmitted to the first element 41 of the differential device 40 by the first one-way clutch 20, and the power of the second rotating shaft 8 is transmitted to the first power of the differential device 40 by the second one-way clutch 30. 2 is transmitted to the element 44.
  • the third element 47 engaged with the second element 44 and the first element 41 is rotated, and the output shaft 9 is rotated, so that the rotational energy of the first propeller 5 and the second propeller 6 is generated by the generator 50. Converted to electric power.
  • the first one-way clutch 20 causes the first element 41 to move. Transmission of power to the first rotating shaft 7 is interrupted. Therefore, it is possible to prevent the first propeller 5 having a small rotational speed from becoming a brake for the second propeller 6 having a large rotational speed.
  • the second one-way clutch 30 causes the second element 44 to rotate. Transmission of power to the second rotary shaft 8 is interrupted. Therefore, it is possible to prevent the second propeller 6 having a low rotation speed from becoming a brake for the first propeller 5 having a high rotation speed. Thereby, the loss of shaft power by one side of the 1st propeller 5 or the 2nd propeller 6 becoming the other brake of the 1st propeller 5 or the 2nd propeller 6 can be controlled. As a result, the power generation efficiency by the rotational energy of the first propeller 5 and the second propeller 6 can be improved.
  • first propeller 5 and the second propeller 6 rotate in reverse, the rotational reaction forces generated in the first propeller 5 and the second propeller 6 are offset and suppressed.
  • the structure of the main body 4 can be simplified. Wind noise generated in the first propeller 5 and the second propeller 6 can be suppressed by rotating the first propeller 5 and the second propeller 6 in the reverse directions.
  • FIG. 2 is an axial sectional view of the power transmission device 10.
  • the first rotating shaft 7 and the second rotating shaft 8 are positioned on the same axis O, and are pivotally supported by bearings 61 and 62 disposed and fixed on the housing 10 a of the power transmission device 10. Is done.
  • the first rotating shaft 7 is loosely inserted at its end into a recess formed on the end surface of the second rotating shaft 8.
  • a bearing 63 is disposed between the outer peripheral surface of the first rotating shaft 7 and the inner peripheral surface of the second rotating shaft 8, and the bearing 64 is between the contact surfaces of the first rotating shaft 7 and the second rotating shaft 7. It is arranged.
  • the 1st rotating shaft 7 and the 2nd rotating shaft 8 are each rotatably supported by the housing
  • the first element 41 and the second element 44 are members for transmitting the power of the first rotating shaft 7 and the second rotating shaft 8 to the third element 47.
  • the worm wheels 41 and 44 It is configured.
  • the worm wheels 41, 44 include a pair of disks 42, 45 that face each other with the output shaft 9 interposed therebetween, and roller pins 43, 46 that project from the opposing surfaces of the disks 42, 45 toward the output shaft 9 side. Yes.
  • the discs 42 and 45 are members formed in an annular shape, and have holes 42 a and 45 a through which the first rotating shaft 7 or the second rotating shaft 8 passes in the center.
  • a bearing 65 is disposed between the inner peripheral surface of the hole 42 a and the outer peripheral surface of the first rotary shaft 7, and the bearing 66 is provided between the inner peripheral surface of the hole 45 a and the outer peripheral surface of the second rotary shaft 8. It is arranged.
  • bearings 67 and 68 are disposed between the disks 42 and 45 and the inner surface of the housing 10a. Thereby, the disks 42 and 45 are supported so as to be rotatable relative to the first rotating shaft 7 and the second rotating shaft 8. Moreover, since the 1st rotating shaft 7 and the 2nd rotating shaft 8 have penetrated the hole parts 42a and 45a of the disks 42 and 45, the axial direction length of the power transmission device 10 can be made small.
  • the first rotating member 21 and the second rotating member 31 are annular members for engaging the first sprag 22 and the second sprag 32 between the first rotating shaft 7 and the second rotating shaft 8, It is formed integrally with the disks 42 and 45, and projects from the opposing surfaces of the disks 42 and 45 toward the output shaft 9 side.
  • the first rotating member 21 and the second rotating member 31 are located on the inner side in the axis-perpendicular direction (axial center O side) with respect to the roller pins 43 and 46. Since the first rotating member 21 and the second rotating member 31 are formed integrally with the disks 42 and 45, the power transmission device 10 can be made compact.
  • the third element 47 is a member that engages with the first element 41 and the second element 44 to reversely connect the first element 41 and the second element 44.
  • the worm 47 is formed at the tip of the output shaft 9.
  • the output shaft 9 is orthogonal to the first rotating shaft 7 and the second rotating shaft 8 when viewed from the side, and is supported by the housing 10 a by a bearing 69.
  • the worm 47 (third element) is rotated by the rotation of the worm wheels 41 and 44 (first element and second element), and the output shaft 9 is rotated. Since the sliding friction is dominant in the engagement between the worm wheels 41 and 44 and the worm 47, noise accompanying the rotational drive of the worm 47 can be suppressed.
  • the number of teeth of the worm wheels 41 and 44 (number of roller pins 43 and 46) is set larger than the number of teeth of the worm 47.
  • the worm gears (worm wheels 41 and 44 and worm 47) are generally used so that the worm wheels 41 and 44 are rotated (driven) by the rotation of the worm 47.
  • the worm 47 can be rotated (reverse drive) by the rotation.
  • the twist angle of the worm 47 may be set to be larger than the friction angle.
  • FIG. 3A is a cross-sectional view of the differential device 40 taken along line IIIa-IIIa in FIG. 2
  • FIG. 3B is a cross-sectional view of the differential device 40 taken along line IIIb-IIIb in FIG. .
  • FIG. 3A for the sake of easy understanding, the illustration of the first rotating shaft 7 and the second rotating shaft 8 penetrating through the hole 42a and the center thereof and the illustration of the worm wheel 44 are omitted. . Further, in FIG. 3B, a part of the output shaft 9 on the worm wheel 44 side and the worm wheel 44 are not shown.
  • the roller pin 43 is positioned on a concentric circle having a diameter larger than that of the inner periphery of the hole 42a and the inner periphery of the first rotating member 22 (the center is the axis O) and protrudes from the disk 42. And is engaged with a worm groove 47 a formed in a spiral shape along the outer peripheral surface of the worm 47.
  • the roller pin 43 includes a shaft member 43a and a roller portion 43c configured to be rotatable around the shaft member 43a.
  • the disc 42 has a through hole 42b formed concentrically therethrough, and a shaft member 43a is fitted into the through hole 42b from the facing surface 42c side of the disc 42. Since the shaft member 43a has a flange 43b protruding from the outer periphery of the substantially center in the longitudinal direction, the insertion depth of the shaft member 43a is regulated by the flange 43b.
  • the shaft member 43a fitted in the through hole 42b is fixed from the opposite surface side of the disk 42 by a fastening member having a diameter larger than the inner diameter of the through hole 42b. As a result, the shaft member 43 a is fixed to the disk 42 and protrudes from the facing surface 42 c of the disk 42.
  • the roller portion 43c is a member that is pivotally supported by the shaft member 43a by a bearing 43d, and has an outer peripheral surface that is spherical.
  • the roller portion 43c rotates around the shaft member 43a. Since the roller portion 43c is mounted on the shaft member 43a, the shaft member 43a and the roller portion 43c can be easily replaced even in the unlikely event of breakage or the like, and the maintainability is excellent.
  • the worm groove 47a is a portion with which the roller portion 43c is engaged, and is formed in a circular arc shape in cross section.
  • the worm groove 47a is formed in a Gothic arc shape (a shape in which two arcs having the same radius and different centers are connected).
  • roller pin 43 roller portion 43c having a spherical tip is engaged with the worm groove 47a formed in a spiral shape along the outer peripheral surface of the worm 47, loss due to sliding friction can be reduced. , Can improve the transmission efficiency. Since the loss in the differential device 40 can be reduced, the power generation efficiency can be further improved. Further, heat generation due to friction can be reduced, and the speed transmission ratio can be further increased by reducing friction.
  • the worm groove 47a is formed in an arc shape in cross section, the backlash with the spherical roller pin 43 engaged with the worm groove 47a can be reduced. Thereby, the vibration and noise which generate
  • the cross section of the worm groove 47a is formed in a Gothic arc shape, the worm wheel 41, 44 and the worm 47 can be easily adjusted in position, and the worm 47 can be rotated with a smaller force.
  • FIG. 4A is a skeleton diagram schematically showing a power transmission mechanism of the hydrodynamic power generation apparatus 101 in the second embodiment.
  • rotors 51a and 51b and stators 52a and 52b are installed in the power transmission device 110.
  • the rotors 51a and 51b are disposed at two locations on the first propeller 5 side and the second propeller 6 side, and the first rotating member 21 and the first element 41, the second rotating member 31 and the second element 44, respectively. It is comprised so that it may rotate integrally.
  • the stators 52a and 52b are arranged at predetermined intervals from the respective rotors 51a and 51b. Since the rotation speed of the third element 47 is detected by the encoder 70, the operation of the differential device 40 can be detected.
  • the hydrodynamic power generation device 101 configured as described above, power can be generated by the two rotors 51a and 51b and the stators 52a and 52b on the first propeller 5 side and the second propeller 6 side.
  • the number of rotations of one propeller here, the first propeller 5 is assumed for convenience of description
  • the number of rotations of the first rotating shaft 7 is relatively smaller than the number of rotations of the first element 41
  • the transmission of power from the first element 41 to the first rotating shaft 7 is interrupted by the first one-way clutch 20. Therefore, it is possible to prevent the first propeller 5 having a small rotational speed from becoming a brake for the second propeller 6 having a large rotational speed.
  • the rotor 51a is rotated by the first element 41, power generation by the two rotors 51a and 51b and the stators 52a and 52b is continuously performed. This prevents the power generation efficiency from being lowered.
  • FIG. 4B is a skeleton diagram schematically showing the power transmission mechanism of the hydrodynamic power generation apparatus 201 in the third embodiment.
  • the hydroelectric power generation device 201 includes a first one-way clutch 220, a second one-way clutch 230, and a differential device 40.
  • Rotors 51a and 51b and stators 52a and 52b are installed in the power transmission device 210. Yes.
  • the first one-way clutch 220 is an annular first rotating member 221 that rotates integrally with the first rotating shaft 7, and is disposed on the inner side of the first rotating member 221 coaxially with the first rotating shaft 7.
  • the first transmission shaft 222 rotated integrally with the element 41, and a plurality of first sprags disposed in the circumferential direction between the outer peripheral surface of the first transmission shaft 222 and the inner peripheral surface of the first rotation member 221 223.
  • the first sprag 223 is engaged with the first rotating member 221 and the first transmission shaft 222 to transmit power, and the engagement between the first rotating member 221 and the first transmission shaft 222 and the first sprag 223 is released. This interrupts the transmission of power.
  • the second one-way clutch 230 is an annular second rotating member 321 that rotates integrally with the second rotating shaft 8, and is disposed coaxially with the second rotating shaft 8 inside the second rotating member 321.
  • the second transmission shaft 322 rotated integrally with the element 44, and a plurality of second sprags disposed in the circumferential direction between the outer peripheral surface of the second transmission shaft 322 and the inner peripheral surface of the second rotation member 321 323.
  • the second sprag 323 is engaged with the second rotating member 321 and the second transmission shaft 322 to transmit power, and the engagement between the second rotating member 321 and the second transmission shaft 322 and the second sprag 323 is released. This interrupts the transmission of power.
  • the rotors 51a and 51b are disposed at two locations on the first propeller 5 side and the second propeller 6 side, and are configured to rotate integrally with the first rotating member 221 and the second rotating member 321, respectively. Yes.
  • the stators 52a and 52b are arranged at predetermined intervals from the respective rotors 51a and 51b.
  • power can be generated by the two rotors 51a and 51b and the stators 52a and 52b on the first propeller 5 side and the second propeller 6 side.
  • the number of rotations of one propeller here, the first propeller 5 is assumed for convenience of description
  • the number of rotations of the first rotating shaft 7 is relatively smaller than the number of rotations of the first element 41
  • the transmission of power from the first element 41 to the first rotating shaft 7 is blocked by the first one-way clutch 220. Therefore, it is possible to prevent the first propeller 5 having a small rotational speed from becoming a brake for the second propeller 6 having a large rotational speed.
  • the first propeller 5 and the second propeller 6 rotate in opposite directions and have different rotational speeds, so that the first propeller 5 side and the second propeller 6 side 2
  • An auxiliary device such as a frequency adjusting device for adjusting the frequency of the electric power generated by the rotors 51a and 51b and the stators 52a and 52b is required.
  • a speed increaser (not shown) can be provided on the first rotating shaft 7 and the second rotating shaft 8 to increase the number of rotations of the rotors 51a and 51b.
  • FIG. 5 is a side view of a hydrodynamic power generator 301 in the fourth embodiment.
  • the rightward arrow shown in FIG. 5 is the direction of the water flow.
  • the hydroelectric power generator 301 is fixed by a cylindrical tube 302 fixed substantially horizontally below a water surface by a support member (not shown), and a hollow support portion 303 inside the tube 302. And a cylindrical main body 304.
  • the pipe body 302 is open at both ends, and is fixed below the water surface so that the water flow flows in from one opening of the pipe body 302 and flows out from the other opening.
  • the first propeller 305 and the second propeller 306 are members for converting the energy of the water flow into rotational power.
  • the first propeller 305 and the second propeller 306 are disposed at one end and the other end of the main body 304 and receive the water flow from the hubs 305a and 306a.
  • Blades 305b and 306b for rotating the hubs 305a and 306a are provided.
  • the first propeller 305 and the second propeller 306 are designed so that the rotation directions of the first propeller 305 and the second propeller 306 are opposite to each other when viewed from the upstream side (or the downstream side).
  • the generator 307 is a device for converting shaft power generated by the first propeller 305 and the second propeller 306 into electric power, and is disposed outside the main body 304. Therefore, unlike the position of the main body 304, the generator 307 can be provided on the water, on the ground, or at a shallow depth. As a result, the maintenance and inspection of the generator 307 can be facilitated, and the maintainability of the generator 307 can be improved.
  • the means for transmitting the power generated by the first propeller 305 and the second propeller 306 to the generator 307 through the support portion 303 has an output shaft connected to the third element as in the first embodiment. Since it should just extend, description is abbreviate
  • first one-way clutches 20 and 220 and the second one-way clutches 30 and 230 are sprag types.
  • present invention is not necessarily limited to this, and other one-way clutches such as roller types, Of course, it is possible to adopt a ratchet type.
  • differential device 40 employing the worm wheels 41 and 44 (first element and second element) and the worm 47 (third element) is described, but the present invention is not necessarily limited thereto. However, it is naturally possible to employ other differential devices. Examples of other differential devices include those equipped with bevel gears, hypoid gears (registered trademark), and the like.
  • the case where the cross-sectional shape of the worm groove 47a formed on the outer peripheral surface of the worm 47 is formed in a Gothic arc shape is not limited to this, but the cross-sectional arc shape is not necessarily limited thereto.
  • other shapes are possible. Examples of other shapes include a circular arc shape (single arc shape) and the like.
  • by forming the worm groove 47a in an arc shape in cross section it is possible to realize an effect of reducing the backlash with the spherical roller pins 43 and 46 engaged with the worm groove 47a.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Wind Motors (AREA)
  • Hydraulic Turbines (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

L'invention porte sur un dispositif générateur de puissance à force de fluide dans lequel la perte d'énergie de l'arbre provoquée par le fait qu'une hélice se comporte comme un frein pour l'autre hélice peut être évitée et que, de cette façon, le rendement de production d'énergie peut être amélioré. Une première hélice (5) et une seconde hélice (6) ayant des sens de rotation différents l'un de l'autre sont disposées sur les deux extrémités d'un corps principal (4) et sont accouplées respectivement par un premier arbre rotatif (7) et un second arbre rotatif (8). La force motrice du premier arbre rotatif (7) est transmise à un premier élément (41) (différentiel (40)) par un premier embrayage unidirectionnel (20), et la force motrice du second arbre rotatif (8) est transmise à un second élément (42) (différentiel (40)) par un second embrayage unidirectionnel (30). Lorsque le nombre de tours de la première hélice (5) décroît et que le nombre de tours du premier arbre rotatif (7) devient relativement plus petit que celui du premier élément (41), la transmission d'énergie du premier élément (41) au premier arbre rotatif (7) est interrompue par le premier embrayage unidirectionnel (20). La première hélice (5) est empêchée de se comporter comme un frein pour la deuxième hélice (6) qui a un plus grand nombre de tours. La perte d'énergie des arbres peut être évitée et le rendement de production d'énergie peut ainsi être amélioré.
PCT/JP2012/065114 2011-06-16 2012-06-13 Dispositif générateur de puissance à force de fluide WO2012173139A1 (fr)

Applications Claiming Priority (2)

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JP2011-133946 2011-06-16
JP2011133946A JP5150751B2 (ja) 2011-06-16 2011-06-16 流体力発電装置

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WO2012173139A1 true WO2012173139A1 (fr) 2012-12-20

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Cited By (3)

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CN105683565A (zh) * 2013-10-28 2016-06-15 株式会社捷太格特 接头结构和风力发电装置
CN109209749A (zh) * 2018-08-28 2019-01-15 李超杰 一种潮汐能发电装置
US10428801B2 (en) 2013-03-12 2019-10-01 Jtekt Corporation Wind power generation device

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JP2016008648A (ja) * 2014-06-24 2016-01-18 パセット，ピエルジョルジオ 制御を制限した可動式ブレードを有する１つ以上の羽根車を備える流体力学的機械
CN104912738A (zh) * 2015-04-21 2015-09-16 梁荫健 一种水动、风动、烟动机
JP6836769B2 (ja) * 2016-08-22 2021-03-03 株式会社日本風洞製作所 流体機械および発電装置
JP6164597B1 (ja) * 2016-09-29 2017-07-19 株式会社落雷抑制システムズ 風力発電装置
KR102087088B1 (ko) * 2017-05-11 2020-03-10 최한웅 원통형 링기어 또는 링기어 옆면에 베벨기어가 형성된 터빈 유닛과 이를 포함하는 유체에너지 이용시스템
JP7040830B1 (ja) * 2021-06-18 2022-03-23 株式会社ナカムラ 波力発電装置

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JP2011190793A (ja) * 2010-03-16 2011-09-29 Yamazaki:Kk 水力及び風力発電装置
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JPH09242658A (ja) * 1996-03-04 1997-09-16 Mitsuo Okamoto ツイン風車式発電装置
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US10428801B2 (en) 2013-03-12 2019-10-01 Jtekt Corporation Wind power generation device
CN105683565A (zh) * 2013-10-28 2016-06-15 株式会社捷太格特 接头结构和风力发电装置
US20160265515A1 (en) 2013-10-28 2016-09-15 Jtekt Corporation Joint structure and wind power generation device
EP3064771A4 (fr) * 2013-10-28 2017-07-19 JTEKT Corporation Agencement de raccord et dispositif de production d'énergie éolienne
US10495066B2 (en) 2013-10-28 2019-12-03 Jtekt Corporation Joint structure and wind power generation device
CN109209749A (zh) * 2018-08-28 2019-01-15 李超杰 一种潮汐能发电装置

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