JP6247731B2 - A device for extracting energy from a flowing liquid - Google Patents

Description

  The present invention relates to an apparatus for extracting energy from a flowing liquid such as water.

  In particular, the present invention relates to a device for extracting energy from a flowing liquid, and includes a support device rotatably connected to a rotation shaft and a turbine device including at least one helical turbine. Further, an energy converter is connected to each shaft, the turbine device has a proximal end and a distal end, and the proximal end is rotatably connected to the support device. The distal end can freely move in the flowing liquid along the circular path, and the rotation axis is provided perpendicular to the circular path. The operating angle position can be adjusted.

  There is a considerable amount of unused energy in tidal currents, ocean currents, and river currents. In order to extract energy from such a flowing liquid, various attempts have been made to obtain an efficient and reliable system.

  For example, a tidal mill (Tidal mill) provided on the seabed with a structure similar to a windmill is known. Such devices typically have the disadvantage of generating significant forces and bending moments, and therefore required a tower-like support structure that can withstand and absorb the forces.

  Patent Document 1 describes a spiral turbine device that can be placed in water. A generator is connected to the shaft of the screw turbine. Also. The screw turbine and the generator are rotatably connected on a foundation provided on the seabed. Furthermore, when the screw turbine is used, it is provided with turbine blades that can have sufficient buoyancy when raised to a diagonal position in water.

  An apparatus of the type described at the beginning is disclosed in US Pat. This publication describes two spiral turbines and a spiral turbine device provided to overlap each other in parallel, including a reverse pitch. A generator is connected to the shaft of the screw turbine. The device is rotatably connected to the bottom of the seabed. When the screw turbine is used, it is provided with turbine blades that can have sufficient buoyancy when raised to a diagonal position in the liquid. This conventional technology can convert a flowing liquid such as a tidal current into electric energy by energy conversion, and can compensate for the disadvantages of the bending moment and force of the conventional rigid tidal power generation. However, it still has some drawbacks with respect to overall performance such as output power energy efficiency and stability. In particular, tests have shown that the output power of the generator is subject to excessive fluctuations or deformations.

International Publication No. 2004/069757 International Publication No. 2009/093909

  The object of the present invention is to improve or reduce at least one of the problems described in the background art.

  The invention is defined by the claims.

  The invention is illustrated by non-limiting examples in the accompanying drawings.

1 is a schematic front view showing a first embodiment of an apparatus for extracting energy from a flowing liquid. 1 is a schematic side view showing a first embodiment of an apparatus for extracting energy from a flowing liquid. It is the typical top view and front view which show 2nd Embodiment of the apparatus for extracting energy from a flowing liquid. It is the typical top view and front view which show 3rd Embodiment of the apparatus for extracting energy from a flowing liquid. It is a typical front view which shows 4th Embodiment of the apparatus for extracting energy from a flowing liquid. It is a typical side view which shows 4th Embodiment of the apparatus for extracting energy from a flowing liquid. Fig. 2 shows a schematic detailed view of the side and end caps of an apparatus for extracting energy from a flowing liquid. It is a schematic diagram which shows the possible aspect of the characteristic of lying down. FIG. 6 is a schematic diagram showing various possible sideways termination aspects. It is a typical front view which shows 5th Embodiment of the apparatus for extracting energy from a flowing liquid. It is a typical side view which shows 5th Embodiment of the apparatus for extracting energy from a flowing liquid. It is a typical front view which shows 6th Embodiment of the apparatus for extracting energy from a flowing liquid. FIG. 9 is a schematic plan view showing a sixth embodiment of an apparatus for extracting energy from a flowing liquid. FIG. 9 is a schematic plan view showing a sixth embodiment of an apparatus for extracting energy from a flowing liquid. It is a typical front view which shows 7th Embodiment of the apparatus for extracting energy from a flowing liquid.

  The same reference numbers are used throughout the drawings to indicate the same or corresponding elements.

  FIG. 1 is a schematic front view showing a first embodiment of an apparatus for extracting energy from a flowing liquid. The flowing liquid is water that flows such as seawater (for example, tidal currents or ocean currents) or fresh water (for example, river water currents). The flowing liquid may alternatively be any other liquid that retains brackish water, drainage or kinetic energy and can also be extracted / utilized.

  The device comprises a support device 12, which in this embodiment is attached to the seabed. The support device may be attached to the seabed by using a gravity base foundation, a pinned foundation, a pile foundation using a single or a plurality of piles, or any combination of these foundations. In the figure, for ease of explanation, the support device 12 and the seabed portion to which the support device is attached are horizontal. However, it should be understood that the support device can be adapted accordingly depending on the seabed slope and irregularities.

  In another aspect of the first embodiment, the support device 12 may be secured with a chain at a depth intermediate between the bottom and the water surface, or the buoyant platform may be tethered to a mooring or rope.

  Furthermore, the turbine 1 that is pivotally connected to the pivot shaft 18 of the support device 12 is horizontal or at least substantially horizontal in this first embodiment. The pivot connection is arranged on the upper side of the support device. The pivotal connection can be provided by a horizontal shaft on the turbine device, which is provided with a bearing 11 at the end which is rotatable relative to the support device. In other embodiments, the bearings can be arranged in the middle or the entire shaft (eg, plain bearings or rolling element bearings) or similar swivel elements.

  In another aspect, the rotation shaft 18 may be disposed at an arbitrary angle. For example, the pivot axis may be horizontal or at least approximately horizontal, as illustrated in the first to fifth embodiments, and vertical or at least approximately vertical as illustrated in the sixth embodiment. Or may be diagonal as exemplified in the seventh embodiment.

  Moreover, you may arrange | position the rotation connection by inserting in a support apparatus partially or completely.

  The turbine device 1 includes two spiral turbines 4 and 2. Each turbine device has an axle or shaft connected to an energy converter and is indicated in the drawings as 22 and 24, respectively. In another embodiment, the shaft may be connected to the transmission while propelling the common energy converter again.

  In another embodiment, the turbine apparatus may comprise one to three to four, or any more helical turbine apparatus. In a particular aspect, the turbine apparatus comprises an even number of spiral turbines, but may comprise an odd number of spiral turbines. A preferred arrangement of two or more helical turbines may be arranged in-line, i.e. with parallel axes of rotation so as to intersect a single line.

  The spiral turbines 2 and 4 are arranged adjacent to each other so that their rotation axes are parallel to each other. Also, the spiral turbine rotates in opposite directions as shown, or rotates with handedness. Thus, in operation they rotate in the opposite direction. The helical turbine 4 shown on the left side of FIG. 1 rotates in the right direction, and the helical turbine 2 shown on the right side rotates in the left direction. Where the turbine arrangement includes two or more helical turbines having parallel axes, they may preferably have symmetry in opposite directions.

  Spiral turbines may be designed so that vortices always rotate in the same direction in tidal currents where water flows in the opposite direction.

  The energy converters 22 and 24 may be a simple generator including a simple generator and / or a gear system. In another embodiment, the energy converter may be such as supplying pressurized air, such as a pump. Generally speaking, the energy converter may be any of a variety of energy conversion devices and may convert the rotational energy provided by the kinetic energy of the flowing liquid into different forms of energy. .

  The turbine apparatus 1 has a proximal end as shown in the lower part of FIG. 1 and a distal end as shown in the upper part of FIG. The proximal end of the turbine device 1 is rotatably connected to the support device 12.

  Since the support device and the proximal end of the turbine device 1 are rotatably connected, the distal end of the turbine device 1 can freely move in the flowing liquid while drawing a circular orbit (circular path). It has become. The rotation shaft 18 is provided perpendicular to the circular path. The pivot shaft 18 is horizontal or substantially horizontal in this first embodiment, so that the distal end of the turbine apparatus can move substantially vertically in the circular path of the flowing liquid. In this circular path, it should be understood as a path that forms part of a circle, for example as a semicircle or other arc. When the turbine apparatus 1 is used, the turbine can be adjusted to a specific operating angular position around the rotating shaft while rotating around the turbine shafts 6 and 8 when a liquid is flowing and a force is applied. It has become.

  In the first embodiment, the operating angular position can be measured as an angle with respect to a horizontal plane, for example, a turbine device (eg, one angle of the turbine axis). In another aspect, the operating angular position can be determined relative to a vertical plane. In yet another aspect, the operating angular position can determine the described flow direction of the flowing liquid relative to a representative vector.

  The embodiment shown in FIG. 1 shows a configuration in which a spiral turbine is mounted upward from a rotating shaft or a swail point (rotational position), and the operating angle position is such that the net buoyancy of the turbine apparatus as a whole is positive. May be achieved by providing appropriate buoyancy and spiral turbines in such a way. In this case, when the liquid around the device is stagnant (eg, slack tide), the turbine device 1 is operating at a 90 degree operating angle with respect to a substantially horizontal plane, ie substantially Upright in a vertical position. When the flow rate of the liquid increases, the turbine apparatus 1 rotates about the horizontal rotation shaft 18. Therefore, the turbine shafts 6 and 8 are different from each other in a horizontal plane for, for example, a tidal current or a river water flow. With a small operating angle, a change in the liquid flow can be brought about. The angle can be changed by increasing or decreasing the liquid flow rate.

  If the liquid flow rate changes with increasing capacity of the energy conversion device, the angle of the turbine device is shifted to an angle that reduces energy generation.

  According to the invention, at the distal end of the turbine device 1 in order to improve the overall performance, at least one having the form of a transverse bar 7 which has the effect of stabilizing the operating angle of the turbine 1. An extension member is provided. This effect is particularly pronounced at higher liquid velocities or higher liquid flow rates, i.e. high energy production regions.

  In addition or alternatively, by giving buoyancy and ideal physical shape to the side, buoyancy and disturbance can be imparted to the flowing liquid, which can quickly bring the turbine equipment into its operating range. The effect that can be promoted can be brought about. This effect will be particularly noticeable at slow liquid velocities or slower flowing liquids.

In addition or as an alternative to improving overall performance, it may include at least one of the following advantages of the present invention:
-Improving the functions of turbine equipment that can be quickly acquired to a high energy generation range;
-Maintenance of the turbine equipment within the high energy production range over time,
-Improve energy efficiency,
-Improvement of output power stability,
-Decreasing the vibration motion of the spiral turbine and preventing deterioration of load fatigue conditions and life cycle conditions due to vibration motion.

  As shown on the upper side of FIG. 1, the crossing 7 at the distal end of the device 1 of the shaft 6 of the spiral turbine 4 and the shaft 8 of the spiral turbine 2 intersects.

  In the embodiment illustrated in FIG. 1, the turbine apparatus also includes a termination cap 3 provided at the distal end of the helical turbine 2 and a termination cap 5 provided at the distal end of the helical turbine 4.

  The end cap closes / completes the end of the helix to overcome / reduce the obstacles due to fluctuations in torque output at the helix end so that the generator output power is not subject to excessive fluctuations or deformations. .

  Although both the side 7 and the end caps 3, 5 are illustrated in the embodiment, it should be understood that the side and distal end caps may be placed separately or not necessarily combined. It is.

  Each end cap 3 or 5 has a conical surface in the direction of the proximal end of the respective helical turbine.

  The end cap, in certain embodiments, can provide substantial additional buoyancy that can hold the device within its optimum operating range. In certain flowing liquid conditions, the end cap can smooth the flow of water across the spiral turbine and reduce power fluctuations from the spiral turbine.

  In an embodiment, each conical surface may be provided with a radial fin member.

  The radial fin members can reduce further power fluctuations and increase the generated power from the spiral turbine, especially under certain liquid flow conditions.

  In the embodiment shown in FIG. 1, the turbine apparatus also has a termination cap 9 provided at the proximal end of the helical turbine 2 and a termination cap 10 provided at the proximal end of the helical turbine 4. Although the laying 7, the distal end caps 3, 5 and the proximal end caps 9, 10 are both illustrated together in the embodiment, the proximal end caps may be arranged separately and are not necessarily distal end. It should be understood that the cap and the lay down may be arranged without a combination.

  In the embodiment shown in FIG. 1, and in the embodiment or configuration provided on the seabed, the spiral turbine or support is, for example, a density that is substantially less than the density of the liquid, eg the density of water. It may be designed so as to have appropriate buoyancy.

  The spiral turbine and laying may be made of a composite material such as glass reinforced plastic (GRP) or glass fiber or thermoplastic.

  In other embodiments, the lay may be made of an inflatable rubber material having a flexible stretch such as, for example, natural rubber or artificial synthetic rubber material.

  The materials exemplified above can be used in all embodiments herein.

  Such spiral turbines and buoyant elements such as sideways can be manufactured using hollow shells or lightweight materials that are usually filled with air. Buoyancy can be adjusted by providing a ballast filled with water, such as a ballast chamber, if necessary.

  FIG. 2 shows a schematic side view of a first embodiment of an apparatus for extracting energy from a liquid stream.

  For illustration purposes, the turbine apparatus is shown in three positions. In the intermediate position depicted by the solid line, the turbine device is oriented vertically. In this case, the liquid (for example, water) surrounding the apparatus is in a staying state. That is, the liquid flow is zero or substantially zero. As already described above with reference to FIG. 1, in this situation the turbine apparatus 1 is provided upright in a substantially vertical position, ie at an angle of 90 degrees, so as to determine the horizontal plane.

  The left position drawn with a dotted line indicates a situation in which a substantially flowing liquid is flowing from right to left. The turbine shaft has an operation angle smaller than 90 degrees with respect to the horizontal plane, and the turbine device 1 rotates around the horizontal axis. This position corresponds to operation within the high energy generation range.

  The right position drawn with a dotted line also indicates a situation where a substantial flowing liquid exists from left to right. The turbine shaft has an operation angle smaller than 90 degrees with respect to the horizontal plane, and the turbine device 1 rotates around the horizontal axis. This position corresponds to operation within the high energy generation range in the opposite direction.

  Furthermore, FIG. 2 shows an additional function of the flow guide device having the curved guide plate 25, 26 type provided on the seabed. The guide plates may be separate units or they may be attached to the support device or may be an integral part of the support device. The guide plates may be provided on both sides of the turbine device with respect to the liquid flow direction. Guide plates 25, 26 may be placed in the flowing liquid to guide the flowing liquid under the spiral turbine at an appropriate angle and improve the operation of the turbine system. The guide plates 25, 26 may be made of a composite material, for example a spiral turbine or any other material suitable for use in the sea.

  The flow guide device including the guide plates 25 and 26 has an effect of improving the overall performance of the device.

  Specifically, the torque output of a rotating helical turbine is improved and smoothed and / or stabilized. As a result, it has been proven to obtain improved output power.

  For example, a portion of the flow where the turbines 2, 4 will not operate (eg, the bottom of the sea where the flow is low and below the proximal end of the turbine) is increased by the guide plates 25, 26 to increase the output power of the turbine. It can also be oriented.

  FIG. 3 shows a schematic top view and a front view of a second embodiment of an apparatus for extracting energy from a liquid stream. A top view is shown in the upper part of FIG. 3, while a front view is shown in the lower part of FIG.

  In a second embodiment, the turbine apparatus has a single helix turbine with a shaft connected to the energy converter.

  Corresponding to the first embodiment shown in FIGS. 1 and 2, the distal end of the turbine device 1 stabilizes the operating angle of the turbine device 1 in a high energy generation range, particularly in different flow conditions. A horizontal 7 having an effect is provided.

  In order to prevent the horizontal 7 from rotating with respect to the axis of the spiral turbine, the horizontal 7 is connected to columns 13 and 14 provided in the longitudinal direction in parallel with each side of the spiral turbine. Furthermore, the pillars 13 and 14 also function as a support frame for fixing and stabilizing the laying 7.

  Each column 13, 14 has a hydrodynamic shape such that flowing water across the column accelerates, allowing the liquid flow rate on the outer edge of the spiral turbine to be increased so that the output power from the spiral turbine is increased. May be increased. As can be easily seen from the top view, an increase in flow rate can be obtained with each hydrodynamic fin column. The fins may protrude in the opposite direction to maintain operational equilibrium for flow in either direction through the helical turbine.

  A flow guide device including fin-shaped columns has the effect of improving the overall performance of the device. Specifically, the torque output of the rotating helical turbine is increased and / or stabilized. As a result, it has been demonstrated to achieve improved output power.

  Moreover, the other Example of the support apparatus which connected the apparatus to the pre-installed single pile 16 using the quick connection apparatus is shown by FIG.

  FIG. 4 shows a schematic top view and front view of a third embodiment of an apparatus for extracting energy from a liquid stream. A top view is shown in the upper part of FIG. 4, while a front view is shown in the lower part of FIG.

  The third embodiment mainly corresponds to the first embodiment shown in FIG. 1 and FIG. 2, but the fin-type columns 20, 21, 23 arranged in parallel in the longitudinal direction are arranged between the spiral turbines. And outside the helical turbine. The fin columns 20, 21, and 23 have a function as a support frame, and the apparatus can be reinforced by improving the liquid flow of the turbine and providing additional buoyancy as necessary.

  As a preferred embodiment, each fin-type column 20, 21, 23 may be provided with a flow guide device. As can be easily seen from the example of the top view of FIG. 4, each column may be a hydrodynamic fin column. The fin is designed so that the same fin effect can be obtained even if the flow is reversed, for example, in a tidal current. Adjacent fins may protrude in opposite directions.

  Accordingly, the center fin-type column 20 may be protruded in one direction of the turbine device, and the side fin-type columns 21 and 23 may be protruded on the opposite side of the turbine device.

  A flow guide device including a center fin column and a side fin column has the effect of improving the overall performance of the device. Specifically, the torque output of the rotating helical turbine is smoothed and / or stabilized. As a result, it has been proved that the stability of the output power can be improved.

  The pillars, i.e., the fin-type columns 20 at the center and the fin-type columns 21 and 23 at the sides, can be formed from a composite material similar to the material used for the spiral turbine, for example. In order to provide adequate buoyancy, the fin columns may be wholly or partially hollowed out.

  FIG. 5 shows a schematic front view of a fourth embodiment of an apparatus for extracting energy from a liquid stream.

  The fourth embodiment can be considered as a reverse version of the first embodiment shown in FIGS. Therefore, the detailed description will be described with reference to FIGS. 1 and 2 below.

  In a fourth embodiment, the support device 12 may be suspended and / or anchored with an anchor, or placed on or above the surface of another liquid. In such a configuration, the turbine device 1 may be rotatably connected to a support device below the support device 12. A rotational connection can be obtained by a method corresponding to the first embodiment.

  In such an embodiment, the turbine device 1 hangs vertically with stagnant water or minimal water flow (tidal tide) so as to be weighted downward.

  The spiral turbines (2, 4) and the end caps 3, 5, 9, 10 and the laying 7 may contain liquids (water etc.) and / or are additionally ballasted to make the turbine device 1 suitable It may be possible to operate within a certain operating range.

  FIG. 6 shows a schematic side view of a fourth embodiment of an apparatus for extracting energy from a liquid stream.

  FIG. 6 shows a fourth embodiment of three possible positions or operating angles.

  At an intermediate position drawn with a solid line, the turbine device is directed downward in the vertical direction. This is the case when a liquid (such as water) is stagnating around the device, i.e. when the flowing liquid is in a zero or substantially zero state.

  In this situation, the turbine device 1 hangs down in a substantially vertical position, i.e. an operating angle of approximately 90 degrees with respect to the horizontal plane.

  The left position drawn with a dotted line indicates a situation in which a substantially flowing liquid is flowing from right to left. The turbine shaft has an operating angle of less than 90 degrees with respect to the horizontal plane so that the turbine device 1 can rotate about a horizontal axis, at which time the turbine device is operated within a high energy generation range. The

  On the other hand, the right position drawn with a dotted line indicates a situation in which a substantial liquid flow flows from left to right. The turbine shaft has an operating angle of less than 90 degrees with respect to the horizontal plane so that the turbine device 1 can rotate about a horizontal axis, at which time the turbine device is in the opposite direction within the high energy generation range. It is operated with.

  In another aspect of the fourth embodiment, the support device 12 may be fixed with a chain at a position intermediate in depth between the bottom and the water surface, or may be attached with a buoyant platform.

  In the embodiment illustrated in FIGS. 5 and 6, i.e. the embodiment and configuration showing a helix being provided at the bottom of the support device, the helix turbine and other possible additional elements lying side by side are suitable. For example, it may be designed to have a weight higher than the net density of a liquid such as water. This can be obtained by providing selected everyday materials and / or suitable ballast elements.

  FIG. 7 shows a schematic detailed view of the end cap of an apparatus for extracting energy from lying and flowing liquids.

  In certain embodiments, the helical turbine may include a termination cap at the distal end of each helical turbine. Such end caps may have a conical surface in the direction of the proximal end of each helical turbine, and the conical surface may have radial fin members.

  Also, in certain embodiments, the helical turbine may be provided with a termination cap at the proximal end of each helical turbine. Such end caps may have a conical surface in the direction of the proximal end of each helical turbine, and the conical surface has radial fin members.

  Furthermore, in certain embodiments, laying may be provided at both ends of the winglet to hydrodynamically increase the stability of the device.

  The end cap has the effect of improving the overall performance of the device. Specifically, the torque output of the rotating spiral turbine is increased to smooth and / or stabilize. As a result, it has been proven that improved and stable output power can be obtained from the energy converter in a specific generator.

  The distal end termination caps 3, 5 may have radial fin members 17, 19, respectively.

  FIG. 8 schematically illustrates the possible sag characteristics. The laid 7 can be used in all embodiments of the present invention. FIG. 8 illustrates a side view of 7 lying in two situations.

  8 on the left side of FIG. 8 indicates a vertical state when a liquid (water or the like) is staying or when the flow is substantially zero. An upright projection of the side surface area is shown.

  8 on the right side of FIG. 8 indicates a diagonal state when a substantial flow of liquid (water or the like) occurs in the direction of an arrow (left and right direction in the drawing). As shown, the upright projection range of the horizontal surface area is reduced, thus reducing the force pushing the system compared to the upright / residential upright projection surface area.

  The laying 7 has a profile that provides the preferred hydrodynamic vertical force so that the helix can obtain an optimal position as the flowing liquid increases.

  The laying has a large surface area that can act on the flowing liquid tidal device to move it advantageously to its operating position. Once in the working position state, the liquid flow and lie 7 remain upwards and maintain a proper working angle, while the laying surface area of the liquid flow is reduced and the working angle is increased.

  Furthermore, the hydrodynamic lift is increased as the operating angle is increased by being designed to have a hydrodynamic shape so that it is laid down but given hydrodynamic lift. Such hydrodynamic lift helps to maintain the optimum power angle. This is advantageous for obtaining a load limit.

  The sideways illustrated in the embodiments may be incorporated to advantageously provide buoyancy, thereby allowing the turbine device during liquid dwell to maintain a vertical position and at operating angles. The stability of the turbine device in the liquid stream can be substantially increased.

  This can result in increased overall performance, including increased stability of the operating angle of the turbine apparatus 1. For example, it is possible to improve the angle stability even in the state where trouble or noise occurs due to unstable fluctuations in the flowing liquid.

  FIG. 9 illustrates various possible profiled end profiles and cross-sectional views. Each lie is specifically designed to accommodate various flows at a particular tidal current.

  The amount of buoyancy in the sideways that operates in conjunction with the physical shape and equipment forces the equipment at low flow rates and high energy production ranges, and for long periods of time the high energy production range of the equipment even in high-speed liquid flow It has been shown to maintain.

  Another aspect of laying down is that if the generator produces more energy than a predetermined value with a flow rate higher than a predetermined, the device may utilize a more efficient rated generator to reduce the load. It works out of the high energy production range as much as possible.

  FIG. 10 shows a schematic front view of a fifth embodiment of an apparatus for extracting energy from a liquid stream.

  The fifth embodiment corresponds in many respects to the first embodiment illustrated in FIGS. 1 and 2. Therefore, the detailed description will be described with reference to FIGS. 1 and 2 below.

  In the fifth embodiment, the energy converters 22, 24 are integrally connected directly to the proximal ends 2, 4 of the helical turbine.

  Thus, the turbine device is pivotally connected to the support device by separate pivot / swivel elements 27, 28 arranged on the housing / enclosure of the energy converters 22, 24.

  In another aspect of the fifth embodiment, the housing / enclosure can be connected directly by sideways and / or other connecting members.

  FIG. 11 shows a schematic side view of a fifth embodiment of an apparatus for extracting energy from a liquid stream.

  Three positions of the turbine device are illustrated. In the intermediate position depicted by the solid line, the turbine device is oriented vertically, corresponding to the accumulated liquid. The left position drawn with a dotted line shows a situation where a substantial liquid flow exists from right to left. Since the turbine apparatus 1 rotates around a horizontal axis, the turbine shaft can take an operation angle of less than 90 degrees when operating within an operating range with respect to a horizontal plane.

  The right position indicated by the dotted line indicates a situation where a substantial liquid flow is flowing from left to right. The turbine apparatus 1 rotates around a horizontal axis. Therefore, when the operating range is determined with respect to a horizontal plane, the turbine shaft 1 takes an operating angle smaller than 90 degrees.

  Although not specifically illustrated in FIG. 11, a flow guide device having a curved guide plate (corresponding to the guide plates 25 and 26 illustrated in FIG. 2) is further provided in the fifth embodiment. Those skilled in the art will recognize that the overall performance of the device can be improved by providing it.

  FIG. 12 shows a schematic front view of a sixth embodiment of an apparatus for extracting energy from a liquid stream.

  The sixth embodiment corresponds in many respects to the first embodiment shown in FIGS. 1 and 2 and the third embodiment shown in FIG. Therefore, a detailed description will be given below with reference to FIGS. 1, 2, and 4, and a special function of the sixth embodiment will be described below.

  The illustrated device includes two helical turbines 4, 2 having shafts connected to the converters 24, 22, with the proximal end of the turbine device 1 being pivotally connected about a pivot shaft 18. . However, the particular aspect illustrated in FIG. 12 can be used with, for example, the one turbine illustrated in the second embodiment and the apparatus shown in the other embodiments described with reference to FIG. .

  In the first embodiment (FIGS. 1 and 2), the support device 12 to which the proximal end portion of the turbine device 1 is rotatably connected is attached substantially horizontally to the seabed. Correspondingly, in the second embodiment (FIG. 3), the turbine is coupled to the single pile 16 by the quick coupling device 15.

  According to the principle of the sixth embodiment, the turbine device 1 is connected to the support device 12 so as to be rotatable around a rotation shaft 18 that is not horizontal. As shown in the figure, the rotation shaft 18 is substantially vertical. Alternatively, the rotation shaft 18 can be at an arbitrary angle from horizontal to vertical. This enables the turbine apparatus 1 to extract energy even with shallow water.

  The turbine device 1 in this aspect is connected to a support / counterweight structure 32 and also rotates about an axle 33 connected to the quick connector 15.

  Buoyancy can be obtained by weighing the turbine device 1 and the support / counterweight structure 32 so that they can maintain a neutral position in the liquid.

  FIG. 13 shows a schematic plan view of a sixth embodiment of an apparatus for extracting energy from a liquid stream.

  The turbine device 1 and the support / counterweight structure 32 around the vertical axle 33 in this aspect are mounted on a gravity base support member 34. The gravity base support member 34 can be attached by two vertical columns 35, 36 and two mooring columns 37, 38 as further illustrated in the figure.

  FIG. 14 shows a schematic plan view of a sixth embodiment of an apparatus for extracting energy from a liquid stream.

  The device can hold its high energy generation position by either the vertical columns 35, 36 and / or the vertical columns 39, 40.

  Alternatively or additionally, the position may be maintained by means of a mooring post 38 connected via a mooring cable 41 to the distal end of the turbine device 1.

  Alternatively or additionally, the position may be maintained by a mooring post 37 connected via a mooring cable 42 to the distal end of the turbine device 1.

  When the liquid flow flows from left to right, the turbine apparatus 1 may be connected to the vertical columns 39 and / or 36 and / or the mooring cables 41 and / or 42 to the mooring columns 38 and / or 37. It can swing to the position where it is.

  When the liquid flow flows from right to left, the turbine apparatus 1 is connected to the position of the vertical columns 40 and / or 35 and / or the mooring cables 41 and / or 42 are connected to the mooring columns 38 and / or 37. It can swing to the position where it is.

  FIG. 15 shows a schematic front view of a seventh embodiment of an apparatus for extracting energy from a liquid stream.

  The seventh embodiment corresponds in many respects to the second embodiment illustrated in FIG. Accordingly, reference is made to FIG. 3 for a detailed description.

  The turbine apparatus of the seventh embodiment illustrated in FIG. 15 includes a single spiral turbine having an axle connected to an energy converter. However, the particular aspect illustrated in FIG. 15 may be used with the devices shown in other embodiments, such as those described above with reference to FIGS. 1 and 3 of the two turbines illustrated in the first embodiment, for example. Can do.

  In the first embodiment (FIGS. 1 and 2), the proximal end of the turbine device 1 is rotatably connected to the support device 12, and is mounted substantially horizontally with respect to the seabed. Correspondingly, in the second embodiment (FIG. 3), the turbine is coupled to the single pile 16 by the quick coupling device 15.

  According to the principle of the seventh embodiment, the turbine device 1 is connected to the support device 12 so as to be rotatable around a non-horizontal axis. As shown in the figure, the rotation shaft 30 is inclined. Alternatively, the rotation shaft 30 can be made vertical.

  The rotational connection in the seventh embodiment is, for example, provided with a cylindrical cylinder fixed to the outside of the oblique or vertical axle 31, and further causing the rotational operation of the turbine device to be caused to the oblique or vertical axle 31. It can be obtained by a connecting element on the turbine device. In addition, a bearing and a swivel element can be included in a connection element.

  In FIG. 15 illustrating the seventh embodiment, the support device that rotatably connects the turbine device includes, for example, a first support member 34 that is provided so as to be partially disposed or embedded on the pile. Contains. In this case, the first support member 34 can be connected so as to be partially embedded in the seabed. The axle 31 can be fixed to the first support member 34. The support device may further include at least one or a second support member 43 and a third support member 44. The second and third support members may be slanted bars, shafts, or bars, and may be fixed to the upper end of the axle 31. Moreover, you may fix each lower end to the seabed.

  Similar to FIG. 3, the distal end of the turbine device 1 is provided with a horizontal 7 that has the effect of stabilizing the operating angle of the turbine device 1 under different flow conditions. In order to prevent the horizontal 7 from rotating on the axle of the spiral turbine, the horizontal 7 is connected to columns 13 and 14 provided in the longitudinal direction in parallel with the side surface of the spiral turbine. Furthermore, the pillars 13 and 14 also function as a support frame for fixing and stabilizing the laying 7. Each column 13, 14 may be provided together with the flow guide device. This may be provided by forming each column with a hydrodynamic fin column that increases the flow rate, corresponding to that shown in the top of FIG. Further, the fins may be protruded in the opposite direction.

  The disclosed embodiments are intended to be illustrative only and not limiting. Various modifications can be made without departing from the scope of the invention. The scope of the invention should not be limited by the detailed description or drawings. Instead, the scope of the invention is defined by the following claims and equivalents.

DESCRIPTION OF SYMBOLS 1 Turbine apparatus 2,4 Spiral turbine 3,5,9,10 End cap 6,8 Turbine shaft 7 Side 11 Bearing 12,34 Support apparatus 13,14 Pillar 15 Quick connection apparatus 16 Single pile 17,19 Radial fin member 18 , 30 Rotating shaft 20, 21, 23 Fin-type columns 22, 24 Converters 25, 26 Guide plates 27, 28 Rotating / sbailing elements 31, 33 Axle 32 Support / counterweight structure 34 First support member 35, 36, 39, 40 Vertical column 37, 38 Mooring column 41, 42 Mooring cable 43 Second support member 44 Third support member

Claims (16)

An apparatus for extracting energy from a flowing liquid,
A turbine device (1) rotatably connected around a support device (12) and a rotation shaft (18; 30);
The turbine device (1)
At least one helical turbine (2; 4) having a turbine shaft and an energy converter (22; 24);
A proximal end and a distal end, the proximal end being pivotally connected to the support device (12);
The distal end is free to move in a circular path freely in the flowing liquid;
The rotating shaft (18; 30) is provided perpendicular to the circular path, and the turbine shaft is configured to allow the flowing liquid to flow bidirectionally along the circular path when the turbine device is used. It is attached to the pivot shaft (18; 30) so that it can pivot relative to it.
When the turbine device is used, when the turbine shaft rotates around the rotation shaft (18; 30), the operation of the turbine shaft around the rotation shaft (18; 30) according to the flowing liquid. The angular position can be adjusted,
The distal end of the turbine device (1) comprises at least one transverse bar (7) that stabilizes the operating angular position of the turbine device (1),
The apparatus according to claim 1, wherein the laying has a surface capable of hydrodynamically increasing the normal force as the operating angle of the turbine shaft around the rotation axis increases.   2. The device according to claim 1, wherein the turbine device (1) comprises at least two helical turbines (2; 4) with parallel axes of rotation.   The apparatus of claim 2, wherein adjacent turbines have handedness.   4. A device according to claim 2 or 3, characterized in that the horizontal (7) intersects at the distal end of the turbine device (1) of the rotating shaft of at least two helical turbines (2; 4).   5. A device according to any one of the preceding claims, characterized in that an end cap (9; 10) is further provided at the proximal end of each helical turbine (1; 4).   6. A device according to claim 5, characterized in that the end cap (3; 5) has a conical surface directed in the direction of the proximal end of the respective helical turbine.   7. A device according to claim 6, wherein radial fin members are provided on the conical surface.   8. A device according to any one of the preceding claims, wherein a termination cap is further provided at the distal end of each helical turbine.   The spiral turbine and the horizontal plate have a density so that the turbine shaft of the turbine device can be adjusted to a predetermined operating angular position when the flowing liquid is flowing at a predetermined flow value when the turbine device is used. The device according to claim 1, wherein the shape is designed.   10. A device according to any one of the preceding claims, further comprising at least one flow guide device.   11. The apparatus of claim 10, wherein the at least one flow guide device is selected from a set of center fin columns, two side fin columns and two guide plates.   12. A device according to any one of the preceding claims, wherein the helical turbine and the siding are made of a composite material.   The apparatus according to any one of claims 1 to 12, wherein the supporting device is provided on a seabed or a bottom.   The apparatus according to claim 1, wherein the support device is provided on a water surface.   The device according to any one of claims 1 to 12, wherein the supporting device is provided at an intermediate level between the bottom and the water surface. Apparatus for extracting energy from flowing liquid according to any one of the pivot shaft (18) Gaho crucible claims 1 to 12 characterized in that provided in the horizontal.

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