JP3139609U - Water turbine module and power generation underwater water turbine device - Google Patents

Abstract

[PROBLEMS] To provide a turbine module that can be used by connecting as many stages as necessary according to the topography and usage of the seabed or riverbed, and to provide short-term power facilities that meet the power demand and installation site conditions. Provided is an underwater water turbine device for power generation that can be realized at low cost.
A desired number of turbine modules 4 having movable blade turbines having movable blades that change their direction in response to a water flow are installed in the sea or river water in a vertically connected manner. Electric power is generated by transmitting the rotation of the impeller to the generator 8 on the underframe 3 via the output shaft 6, the output gear 7, and the pinion 9.
[Selection] Figure 1

Description

  The present invention relates to a water turbine module for obtaining rotational power using a sea current or a river flow, and also relates to a power generating underwater water turbine apparatus configured using the water turbine module.

  In recent years, in thermal power generation using fuel resources such as oil and coal, there are limited fuel resources and the impact on global warming due to the emission of greenhouse gases such as CO2. On the other hand, in the case of nuclear power generation, there is no problem of generation of CO 2, but there are problems of processing high-level radioactive waste, and there are problems that it is difficult to obtain public understanding of safety.

  Therefore, in recent years, solar power generation and wind power generation using natural energy such as solar power and wind power that are not concerned about exhaustion as energy resources and that do not have the problem of generating greenhouse gases such as CO 2 have been attracting attention. It is gradually being put to practical use.

  However, the amount of power generated by photovoltaic power generation varies greatly depending on the sunshine conditions at that time, and it cannot be generated at night. Therefore, it is not suitable for the purpose of providing a stable and stable power supply. There is a problem that requires a large light receiving area.

  In addition, wind power generation does not prevent power generation at night like solar power generation, but it can only be used in places where constant winds are blowing throughout the year, and weather conditions change. In easy-to-use places, the output voltage varies greatly depending on the weather, so there is a problem that it can be used only in a very limited area.

On the other hand, for example, in Patent Document 1, a saddle-shaped curved plate blade fixed to a rolling element anchor shaft and placed in water is rotated by an ocean current or the like, and power is generated by a generator mounted on a floating structure base ship. "Automatic omnidirectional natural running water turbine" has been proposed.
JP-A-8-109865

  The invention described in Patent Document 1 can generate power regardless of the flow direction of ocean currents and river flows, and is less susceptible to time zones and weather than solar power and wind power. There are advantages.

  However, although what is described in Patent Document 1 can increase the power generation capacity by increasing the height of the saddle-shaped curved plate blades, there is a problem that it cannot be used in shallow seabeds or riverbeds. In order to meet the power demand exceeding the power generation capacity of the generators mounted on one floating structure carrier, it is necessary to prepare multiple floating structure carriers.

  Accordingly, the present invention provides a turbine module that solves the problems in the prior art as described above and can be used by connecting a plurality of stages as many as required according to the topography and usage of the seabed or riverbed. At the same time, it is an object of the present invention to provide an underwater water turbine apparatus for power generation that can realize electric power equipment that meets electric power demand and installation site conditions in a short period of time at low cost.

In order to achieve the above object, a water turbine module of the present invention includes a water wheel shaft, a pair of blade holding plates fixed to the water wheel shaft in an axially spaced manner, and a center of the water wheel shaft between these blade holding plates. A plurality of movable blades whose base end side is pivotally supported around an axis parallel to the water turbine shaft at a rotationally symmetric position, and the free end sides of the respective movable blades are substantially at the center of the water wheel shaft. A movable impeller water turbine provided with a stopper member for restricting rotation of the water wheel shaft from the facing direction to the front in the rotation direction;
A turbine wheel frame configured to rotatably support a water wheel shaft of the movable blade water wheel about a vertical axis, and to allow water flow to pass from all directions to each movable blade and to be connected in a vertical direction. The upper and lower end portions of the water turbine shaft protrude from the upper surface and the lower surface of the water turbine frame, respectively, so that a shaft coupling can be attached.

  The power generation submersible water turbine apparatus of the present invention is disposed around an output shaft that is supported by a base frame so as to be rotatable about a vertical axis, and an output gear that is provided on the base frame and fixed to the output shaft. A plurality of generators each having a pinion that meshes with the output gear, and the above-described water turbine module connected to one or more stages below the underframe and disposed below the water surface, the output shaft and the water turbine module The water wheel shafts and the water wheel shafts of the water wheel modules connected vertically are connected to each other by a flexible shaft joint.

  According to the water turbine module according to the invention described in claim 1, when installed in the sea or in the water of a river, the movable vane water turbine can efficiently rotate the natural energy of the sea current or the river flow regardless of the direction of the water flow. It can be converted into energy for use. In addition, a necessary number of stages can be connected and used according to the topography and usage of the seabed or riverbed.

  In addition, according to the power generation underwater turbine apparatus according to the invention described in claim 2, stable power supply can be performed by installing the underframe on the sea or on the river. In addition, by simply increasing or decreasing the number of turbine modules connected to the underside of the underframe, it is possible to flexibly respond to the topography and power demand of the bottom of the installation site and river bottom, making it ideal for various installation site conditions. A power generation facility can be realized at a low cost and in a short period of time.

  FIG. 1 is a schematic partial side view of a power generation facility constructed on the sea showing one embodiment of a power generation underwater turbine apparatus of the present invention, and FIG. 2 is a schematic partial plan view thereof. As shown in FIG. 1, an underwater water turbine device 1 for power generation according to the present invention includes a plurality of turbine modules 4 to be described later via a connecting piece 5 in the sea below a frame 3 floated on the sea surface by a float 2. It is configured by connecting multiple.

  As shown in FIG. 2, the float 2 and the frame 3 are provided in a plurality of rows in the vertical and horizontal directions, and are installed in a place where a sea current is constantly obtained on the sea. Each float 2 is formed in a boat shape, and pile holes H are formed at both front and rear ends in the longitudinal direction. Although not shown, these pile holes H are inserted with the heads of piles placed on the seabed to prevent the float 2 from drifting from a fixed position on the sea.

  As shown in FIG. 1, the power generation underwater turbine apparatus 1 of the present invention includes a vertical output shaft 6 connected to the uppermost water turbine module 4 and driven to rotate inside the underframe 3. A large-diameter output gear 7 is fixed to the upper end portion of the output shaft 6.

  As shown in FIG. 3, in the present embodiment, a plurality of generators 8 are arranged at four positions at regular intervals in the circumferential direction of the output gear 7, and the input of each generator 8 is set. A pinion 9 fixed to the shaft meshes with the output gear 7.

  Therefore, when the output shaft 6 is rotationally driven by the ocean current passing through each turbine module 4 installed in the sea and the output gear 7 is rotated together with this, the rotation is the gear ratio between the output gear 7 and each pinion 9. Accordingly, the speed is increased and transmitted to the input shaft of the generator 8, and the power generation is performed simultaneously by the respective generators 8.

  The number of generators 8 driven by meshing the output gear 7 and the pinion 9 is four in this embodiment, but an optimum number should be selected according to the resistance torque of the generator 8 and the like. Can do.

  Next, the structure of the water turbine module 4 used in the power generation underwater turbine apparatus 1 will be described in detail. As shown in FIGS. 4 and 5, the water turbine module 4 includes an upper plate 10 and a lower plate 11 having a square shape in plan view, and four connecting pillars connecting the upper plate 10 and the lower plate 11. The turbine wheel frame 13 is composed of 12 and the movable vane turbine wheel 14 supported and rotated in the turbine wheel frame 13.

  The movable impeller turbine 14 has a turbine shaft 17 that is rotatably supported by bearings 15 and 16 that can be used in seawater on the upper plate 10 and the lower plate 11 of the turbine frame 13, respectively. The upper and lower ends of the water wheel shaft 17 pass through the upper plate 10 and the lower plate 11, and connecting flanges 18 and 19 are fixed to these ends, respectively.

  The movable blade water turbine 14 has a pair of upper and lower blade holding plates 20, 21 fixed inside the water wheel frame 13 so as to be separated from each other in the axial direction of the water wheel shaft 17. These blade holding plates 20 and 21 are formed in a disk shape with the same diameter, and are connected by connecting bars 22 at six circumferentially equidistantly opposed positions in the vicinity of the upper and lower edges of the respective blades. It is integrated.

  Bearing holes 23 are formed at positions close to the connecting bars 22 of the upper and lower blade holding plates 20 and 21, respectively, and an upper end surface and a lower end surface on the base end side of the rectangular movable blade 24 are formed here. A pivot shaft 25 protruding from is inserted in a freely rotatable manner.

  As shown in FIG. 5, in the present embodiment, six movable blades 24 are provided, and the pivot shaft 25 of each movable blade 24 penetrates the movable blade 24 up and down, and is provided by a locking means (not shown). The movable blade 24 is locked so as not to drop upward or downward.

  A gap S is maintained between the upper end surface and the lower end surface of the movable blades 24 and the opposed blade holding plates 20 and 21 by spacers 26 attached to the pivots 25, and the upper and lower blade holding plates 20. , 21 so that each movable blade 24 can rotate smoothly.

  Further, the water turbine wheel 17 of the movable blade turbine 14 is in contact with the free end side of each movable blade 24, and from the position where the free end side of the movable blade 24 is directed to the approximate center of the water turbine shaft 17, the movable blade water turbine is provided. A cylindrical stopper member 27 having six restricting surfaces 27 </ b> A for restricting rotational displacement about the pivot 25 forward in the rotational direction of 14 is fitted and fixed to the water wheel shaft 17.

  Next, the operation of the water turbine module 4 configured as described above will be described in detail with reference to the drawings. In FIG. 5, the ocean current flows from the upper side to the lower side of the figure, and flows into the water turbine frame 13 of the water turbine module 4 from between the connecting columns 12.

  Then, in the movable blade water turbine 14, the three movable blades 24 located on the right side of the water wheel shaft 17 are brought into contact with the regulating surface 27A of the stopper member 27 by the ocean current, and as a result, the three movable blades 14 are movable. Due to the dynamic pressure of the ocean current acting on the blades 24, the movable blade turbine 14 rotates clockwise about the turbine shaft 17.

  On the other hand, the three movable blades 24 located on the left side of the water wheel shaft 17 receive the ocean current and rotate around the pivot 25 so that the free end side faces the downstream side of the ocean current. The counterclockwise moment about the water wheel shaft 17 that prevents the rotation of the movable blade water wheel 14 hardly acts.

  FIG. 6 shows the direction of each movable blade 24 when the movable blade turbine 14 is rotated 30 ° clockwise about the turbine shaft 17 from the position shown in FIG. The movable blades 24 that are effectively acting are two sheets located on the right side of the water wheel shaft 17, and the other movable blades 24 are directed downstream so as to receive the ocean current.

  As described above, in each turbine module 4 in which the movable blade turbine is rotated by the ocean current, the turbine frame 13 is vertically connected by the connecting piece 5 below the frame 3 as shown in FIG. .

  Further, a relay member 28 made of an elastically deformable material such as rubber is interposed between the connecting flanges 18 and 19 protruding above and below the respective water turbine frames 13, and these connecting flanges 18 and 19 facing each other. And the relay member 28 constitute a flexible shaft joint 29, the turbine shafts 17 (not shown in FIG. 1) of each turbine module 4, and the turbine shaft 17 (see FIG. 1) of the uppermost turbine module 4. Is not shown) and the output shaft 6 on the side of the frame 3 is connected.

  Moreover, in the power generation underwater turbine apparatus 1 of this embodiment, the turbine shafts 17 (not shown in FIG. 1) of the turbine modules 4 adjacent to each other that are connected by the flexible shaft joints 29 are The phases of the rotational angles of the movable blades 24 are made different so that torque fluctuations that occur in the output shaft 6 due to changes in the rotational position of the blades 24 are reduced.

  Further, since the mounting error between the upper and lower water wheel shafts connected to each other and between the water wheel shaft and the output shaft 6 is absorbed by the flexible shaft joint 29, the water wheel shafts and the output shafts of all the connected water wheel modules 4 are absorbed. The rotational resistance generated in 6 is reduced.

  In the present embodiment, a flexible shaft joint 29 having an elastically deformable relay member 28 interposed between the connecting flanges 18 and 19 is used. However, the structure of the flexible shaft joint is limited to this. It is not a thing.

  A desired number of water turbine modules 4 constituting the power generation submersible turbine apparatus 1 can be installed in the sea in accordance with the required power generation amount. Furthermore, as shown in FIG. 2, the power generation submersible water turbine apparatus 1 is used by arranging a plurality of power generators below a plurality of frames 3 supported on the sea by floats 2, thereby supplying a large amount of power by a small generator 8. Is possible.

  In the embodiment shown in FIGS. 1 and 2, the frame 3 is floated on the sea with the float 2, but the column 3 is not supported by the float 2, but a column is erected on the sea floor or river bottom. The frame 3 may be supported.

  In the embodiment described above, the movable blade turbine 14 of the turbine module 4 has six movable blades 24, but the number is not particularly limited to six. The stopper member 27 may be manufactured as an integral part of the water wheel shaft 17.

  Furthermore, the stopper member 27 only needs to have a function of abutting the free end side of the movable blade 24 and restricting the rotation range thereof. For example, the stopper member 27 of the restricting surface 27A of the stopper member 27 in this embodiment is used. A number of round bars corresponding to the movable blade 24 are passed between the blade holding plates 20 and 21 around the water wheel shaft 17 so as to be in contact with the free end side of the movable blade 24 at a position. It is good also as a stopper member.

  The water turbine module and power generation submerged water turbine apparatus of the present invention can be used extremely effectively when installed in the sea and constructing a power generation facility that supplies electricity without pollution by the natural energy of the ocean current.

  In addition to the sea, it can be installed and used in the water of a large river with abundant water volume and relatively small fluctuations in the flow rate. It can be used at various scales depending on the topography of the seabed or riverbed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic partial side view of a power generation facility constructed on the sea showing one embodiment of a power generating underwater turbine apparatus of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic partial plan view of a power generation facility constructed on the sea showing one embodiment of a power generation underwater turbine apparatus of the present invention. It is a top view which shows the drive mechanism of the generator in one Embodiment of the underwater water turbine apparatus for electric power generation of this invention. It is a longitudinal cross-sectional view which shows the structure of the water turbine module which comprises the part of the submersible water turbine apparatus for electric power generation shown in FIG. It is a cross-sectional view of the water turbine module in the AA line position of FIG. It is a figure which shows the state which rotated 30 degrees clockwise about the water turbine axis | shaft in the water turbine module shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power generation underwater turbine apparatus 2 Float 3 Underframe 4 Turbine module 5 Connection piece 6 Output shaft 7 Output gear 8 Generator 9 Pinion 10 Upper plate 11 Lower plate 12 Connection pillar 13 Turbine frame 14 Movable blade turbine 15, 16 Bearing 17 Water Axle 18, 19 Connecting flange 20, 21 Blade holding plate 22 Connecting bar 23 Bearing hole 24 Movable blade 25 Axis 26 Spacer 27 Stopper member 27A Restricting surface 28 Relay member 29 Flexible shaft joint

Claims (2)

A water wheel shaft, a pair of blade holding plates fixed axially apart from the water wheel shaft, and a position between these blade holding plates that are rotationally symmetric with respect to the center of the water wheel shaft and parallel to the water wheel shaft, respectively. A plurality of movable blades whose base end side is pivotally supported around a simple axis, and the rotation end of the water turbine shaft is rotated forward from the position where the free end side of each movable blade is directed substantially to the center of the water wheel shaft. A movable impeller water wheel provided with a stopper member for regulating
A turbine wheel frame configured to rotatably support a water wheel shaft of the movable blade water wheel about a vertical axis, and to allow water flow to pass from all directions to each movable blade and to be connected in a vertical direction. With
The water turbine module is characterized in that the upper and lower end portions of the water turbine shaft protrude from the upper surface and the lower surface of the water turbine frame, respectively, so that a shaft coupling can be attached. A plurality of output shafts that are supported by the base frame so as to be rotatable about a vertical axis, and a pinion that is provided around the output gear and that is disposed around the output gear fixed to the output shaft and meshes with the output gear. And a turbine module that is connected to one or more stages below the underframe and disposed below the water surface,
The water turbine module includes a water wheel shaft, a pair of blade holding plates fixed axially apart from the water wheel shaft, and a position between the blade holding plates that is rotationally symmetric with respect to the water wheel shaft center. A plurality of movable blades whose base end side is pivotally supported around an axis parallel to the water wheel shaft, respectively, and the rotation direction of the water wheel shaft from the position where the free end side of each movable blade faces the approximate center of the water wheel shaft A movable impeller water turbine provided with a stopper member that restricts forward rotation, and the water turbine shaft of the movable impeller water turbine are supported so as to be rotatable about a vertical axis. And the upper and lower end portions of the water wheel shaft protrude from the upper surface and the lower surface of the water wheel frame, respectively, and the output shaft and the water wheel shaft of the water wheel module. Between and up and down Linked generator for underwater hydraulic turbine apparatus characterized by between water axles are connected to one another by flexible joint hydraulic turbine module.

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