Power generating system using current around structural body

Abstract

The present invention relates to a power generating system utilizing current around a structural body. The power generating system is disposed in a flow field, wherein the streams of the flow field flow along a main fluid flow direction. The power generating system comprises a supporting device and a power generating device. The supporting device comprises a supporting body, wherein at least one of a stream-facing region, a side-stream region, and a vortex region is defined on the supporting body. The power generating device comprises at least one power generating unit and a power storage unit, wherein the power generating unit is disposed in at least one of the stream-facing region, the side-stream region, and the vortex region.

Claims

1. A power generating system being disposed in an ocean field, wherein streams of the flow field flow along a main fluid flow direction, the power generating system comprises: a supporting device, including a plurality of supporting bodies having a stream-facing region, a side-stream region, and a vortex region; and at least one tunnel region, wherein the stream-facing region is defined as a surface facing the streams flowing along the main fluid flow direction, the side-stream region is defined as a surface lateral to the streams flowing along the main fluid flow direction, the vortex region is defined as a surface facing away from the streams flowing along the main fluid flow direction, and the at least one tunnel region has a first opening and a second opening and extends through the supporting body, wherein the first opening is disposed in the stream-facing region and the second opening is disposed in the side-stream region or the vortex region so as the streams flow through the tunnel region; a down flow is formed in the stream-facing region when the streams contact the stream-facing region; a lateral flow is formed in the side-stream region when the streams flow through the side-stream region, and a vortex flow is formed in the vortex region; wherein the supporting device is an offshore apparatus having the plurality of supporting bodies configured as a fence structure or a grid structure; a power generating device being disposed on the supporting device and comprising a plurality of power generating units, wherein the plurality of power generating units is at least disposed on the stream-facing region and the side-stream region, and selectively disposed on the vortex region; a diversion surface formed in the stream-facing region, the diversion surface diverting the stream into the down flow and guiding the down flow to drive said each of the plurality of power generating units which is disposed in the stream-facing region when the streams contact the diversion surface, wherein the diversion surface extends from the supporting device or is formed by a concave portion of the supporting body; and a diversion trench being formed in the side-stream region and substantially parallel to the main fluid flow direction of the ocean field, wherein the diversion trench diverts the streams into the lateral flow to increase kinetic energy thereof by converging the lateral flow and to drive each of the plurality of power generating units disposed in the side-stream region; wherein said each of the plurality of power generating units is selected from a group consisting of a turbine generator, and a vibration generator, and said each of the plurality of power generating units disposed in the stream-facing region is driven to generate power by the down flow.

2. The power generating system as claimed in claim 1, wherein at least one of the plurality of power generating units is disposed in the vortex region as being the vibration generator driven to generate power by the vortex flow.

3. The power generating system as claimed in claim 1, wherein the power generating device further comprises at least one power storage unit disposed on the supporting body or in the supporting body, and is connected to the plurality of power generating units.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective view of different flows generated when the current flow flows through a supporting body;

(2) FIG. 2 is a front perspective view of different regions defined on the supporting body of a preferred embodiment of the present invention;

(3) FIG. 3 is a rear perspective view of different regions defined on the supporting body of a preferred embodiment of the present invention;

(4) FIG. 4 is a front perspective view showing the arrangement of power generating units of a preferred embodiment of the present invention;

(5) FIG. 5a and FIG. 5b are partial enlargement view of a preferred embodiment of the present invention;

(6) FIG. 6 is a front perspective view showing the arrangement of power generating units of another preferred embodiment of the present invention;

(7) FIG. 7 is a rear perspective view showing the arrangement of power generating unit of a preferred embodiment of the present invention;

(8) FIG. 8 is a perspective view of the diversion surface of a preferred embodiment of the present invention;

(9) FIG. 9 is a perspective view of the diversion surface of another preferred embodiment of the present invention;

(10) FIG. 10 is a perspective view of the diversion trench of a preferred embodiment of the present invention;

(11) FIG. 11 is a perspective view of the tunnel region of a preferred embodiment of the present invention;

(12) FIG. 12 is a schematic view of the power generating array module disposed on the seabed of a preferred embodiment of the present invention; and

(13) FIG. 13 is a schematic view of the power generating array module disposed on the seabed of another preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

(14) Hereafter, examples will be provided to illustrate the embodiments of the present invention. Advantages and effects of the invention will become more apparent from the disclosure of the present invention. It should be noted that these accompanying figures are simplified and illustrative. The quantity, shape and size of components shown in the figures may be modified according to practical conditions, and the arrangement of components may be more complex. Other various aspects also may be practiced or applied in the invention, and various modifications and variations can be made without departing from the spirit of the invention based on various concepts and applications.

(15) The down flow, the lateral flow, and the vortex flow generated by the contact of streams and a supporting body are described in the present paragraphs with the supporting column of the offshore wind turbine regarded as the supporting body of the present invention; and the sea current flow regarded as the flow field of the present invention. Please refer to FIG. 1, the supporting body 2 is disposed in the sea where the sea current flow 1 flows through. In the present illustration, when the streams of the sea current flow 1 flow toward the supporting body 2 in a main fluid flow direction and contact the supporting body 2, the streams are forced to flow downward and turn into a down flow 11. A portion of the streams is squeezed by the supporting body 2 and turn into a lateral flow 12 at the surfaces lateral to the main fluid flow direction 10. Further, a portion of the streams flow through the supporting body 2 and turn into a vortex flow 13 due to the disturbance or combination of the streams separated by the supporting body 2. The following embodiment is described with the sea current flow at the example of the flow field.

(16) FIG. 2 is a front perspective view showing a supporting body of the power generating system of the present invention that is disposed in a sea current flow field. A stream-facing region 21, a side-stream region 22, and a vortex region 23 may be defined in different areas of the supporting body 2. Refer to the illustration, when the streams of the sea current flow 1 flow toward the supporting body 2 and contact the stream-facing region 21, the streams are forced to flow downward and turn into a down flow 11; and when the streams 1 flow through the side-stream region 22, the streams 1 are squeezed and turn into a lateral flow 12 in the side-stream region 22. Further, refer to FIG. 3 showing the rear perspective view of the supporting body, when the streams 1 pass through the supporting body 2, the vortex flow 13 is formed in the vortex region due to the disturbance or combination of the streams separated by the supporting body 2.

(17) FIG. 4 illustrates the arrangement of the power generating units in the stream-facing region 21 and the side-stream region 22 of the supporting body 2. Please also refer to FIG. 5a, which shows the partial enlargement view of the power generating system illustrated in FIG. 4, a plurality of facing-up turbine generators serving as the power generating units 31 is disposed in the stream-facing region 21, wherein the turbine generators are driven by the down flow and convert the kinetic energy of the down flow 11 to electrical energy. Moreover, please refer to FIG. 5b, which shows another partial enlargement view of the power generating system illustrated in FIG. 4, a plurality of facing-forward turbine generators, which faces toward the lateral flow 12, serving as the power generating units 32 is disposed at the side-stream-facing region 22, wherein the turbine generators are driven by the lateral flow 12 and convert the kinetic energy of the lateral flow 12 to electrical energy.

(18) FIG. 6 illustrates the arrangement of power generating units at stream-facing region 21 and the side-stream region 22 of the supporting body 2 of another preferred embodiment of the present invention. FIG. 6 shows the different types of power generating units 31, 31, 32, and 32 disposed alternatively in the stream-facing region 21 and the side-stream region 22 of the supporting body 2, wherein the power generating units 31 and 32 are turbine generators, and the power generating units 31 and 32 are vibration generators.

(19) FIG. 7 shows the arrangement of power generating units 33 in the vortex region 23 of the supporting body 2. Due to the unstable and unpredictable flowing condition of the vortex flow 13 generated in the vortex region 23 of the supporting body 2, the vibration generators serving as the power generating units 33 are driven by the vortex flow 13 to convert the kinetic energy of the unstable vortex flow 13 into electrical energy.

(20) Moreover, in a preferred embodiment of the present invention illustrated in FIG. 8, the supporting device further comprises a diversion surface 41 extending outwardly in the stream-facing region 21, wherein the diversion surface may guide the streams 1 to contact to the stream-facing region and diverts the streams 1 into the down flow 11, the down flow 11 is then guided to flow toward the power generating units 31 for increasing the kinetic energy that drives the power generating units 31 disposed in the stream-facing region 21. Further, in another preferred embodiment, as illustrated in FIG. 9, the diversion surface 41 may be a concave portion of the supporting body 2, which may also guide the streams 1 to contact to the stream-facing region and diverts the streams 1 into the down flow 11 for increasing the kinetic energy that drives the power generating units 31.

(21) In another preferred embodiment as illustrated in FIG. 10, plurality of diversion trenches 42 may be formed in the side-stream region 22 for increasing the kinetic energy that drives the power generating units disposed in those diversion trenches by converging the lateral flow 12.

(22) In a preferred embodiment, refer to FIG. 11, the supporting body 2 may further comprise a tunnel region 44, the tunnel region 44 has a first opening 441 and a second opening 442 and extends through the supporting body 1. A plurality of power generating units 34 may be disposed in the tunnel region 44 and be driven by the streams 14 that pass through the tunnel region 44 to generate power.

(23) In the aforementioned embodiments of the present invention, the power storage unit (figure not shown) is connected to those power generating units for storing the generated power. The power storage unit may be disposed on the supporting body or inside the supporting body and may export the power stored in the power storage unit to electrical equipment (figure not shown) by cables (figure not shown). In addition, the supporting bodies demonstrated in the aforementioned embodiments are single supporting column. The supporting body, however, may be varies forms such as fence structure or grid structure constituted by a plurality of supporting bodies as long as the power generating units are configured according to the flowing direction of the streams to achieve the effect of the present invention. Therefore, the structural variation of the supporting body is not particularly limited.

(24) Accordingly, a power generating array module may be formed when the supporting device comprises a plurality of supporting body, and the plurality of supporting body is configured as fence structure or grid structure. FIG. 12 illustrates a power generating array module disposed on the seabed, for example, the power generating array module 20 comprises a plurality of supporting body 2, and a plurality of power generating devices disposed on those supporting bodies 2. The power generating units 31, 32 of the power generating device is configured according to the fluid flow direction and may be turbine generator of vibration generator according to the fluid flow direction of the streams described hereinabove. Furthermore, the power generating array module constituted by the power generating devices of the present invention may be built on the seabed 52 as illustrated in FIG. 12, or may be fixed to the seabed 52 by steel cable 51 so that the power generating array module 50 is floating in the sea water.

(25) In summary, the power generating system of the present invention is driven by the flows with different direction, such as the down flow, lateral flow, or vortex flow, generated around the supporting body when streams of the flow field, such as ocean current flow, flow through the supporting body, and converts the kinetic energy of the flows into electrical energy by the power generating units disposed correspondingly on the supporting body. Beyond the sea level, the offshore apparatus having those supporting body, such as offshore wind turbine or offshore oil drilling station, still have their original functions. Hence, the power generating system of the present invention does not need huge constructional cost. However, the application of the present invention is not limited thereto; it is applicable as long as streams of a flow field having kinetic energy flow toward the supporting body and generate local flow changes, such as the supporting column of the onshore apparatus, apparatus in the river, or even the coastal dike facing the impact of the sea current.

(26) Although the present invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed.