Following type floating power generation system of artificial floating island

Abstract

The invention discloses a following type floating power generation system of an artificial floating island. The following type floating power generation system comprises the artificial floating island floating on the sea surface and a floating power generation device, the floating power generation device is in traction connection with the artificial floating island through a traction wire; the floating power generation device comprises an annular floating structure, a photovoltaic power generation unit and a wave power generation unit; the wave power generation unit comprises a plurality of wave power generators mounted on the upper side of the annular floating structure in a circumferential array; the lower portion of the annular floating structure is in coaxial traction connection with a bullet-shaped underwater counterweight stabilizer with the tip facing downwards. The annular floating structure can be prevented from excessively surging upwards, and meanwhile photovoltaic complementary power generation is achieved.

Description

Technical Field

[0001] The present invention belongs to the field of artificial floating island power generation. Background Art

[0002] In shallow sea areas, artificial floating islands can be used as floating cities at sea, for amusement, etc. By towing a floating solar power generation device to follow the artificial floating island away from the shore, the effective photovoltaic power generation area of the artificial floating island can be effectively expanded. At the same time, the monitoring device equipped on the floating solar power generation device can also function as an offshore monitoring device;

[0003] The floating photovoltaic power generation device will have too large an up-and-down fluctuation due to sea waves, and the photovoltaic power generation unit is prone to excessive up-and-down violent shaking, thus shortening the service life of the photovoltaic power generation unit and preventing damage due to excessive shaking. The applicant also noticed that the sea waves causing the excessive up-and-down violent shaking of the photovoltaic power generation unit itself contain energy, and it can be considered to suppress and utilize it. Summary of the Invention

[0004] Object of the Invention: In order to overcome the deficiencies in the prior art, the present invention provides a follow-up floating power generation system for an artificial floating island, which can suppress the excessive upward surge of the annular floating structure and generate complementary power with photovoltaic power at the same time.

[0005] Technical Solution: To achieve the above object, the follow-up floating power generation system for an artificial floating island of the present invention includes an artificial floating island floating on the sea surface and a floating power generation device; the floating power generation device is traction-connected to the artificial floating island through a traction line; the floating power generation device includes an annular floating structure, a photovoltaic power generation unit, and a wave power generation unit; the wave power generation unit includes a plurality of wave generators arranged in a circumferential array on the upper side of the annular floating structure; a tip-down bullet-shaped underwater counterweight stabilizer is traction-connected coaxially below the annular floating structure.

[0006] Further, the underwater counterweight stabilizer is at a depth of more than 20 m below the annular floating structure.

[0007] Further, the lower end of the underwater counterweight stabilizer is a solid counterweight body, and the upper end of the solid counterweight body is coaxially and integrally connected with a horn-shaped elastic ring wall that gradually thickens upward along the contour, and the mouth of the horn-shaped elastic ring wall faces upward; when the underwater counterweight stabilizer suddenly shifts upward as a whole from the static state, the pressure suddenly increases in the mouth of the horn under the extrusion of the downward water resistance, so that the horn-shaped elastic ring wall expands.

[0008] Further, the main material of the horn-shaped elastic ring wall is fluororubber inner and outer layers, and the middle layer is a high molecular weight polyethylene fiber reinforced composite material.

[0009] Furthermore, each wave power generator includes a stator support. Horizontally arranged power generation induction coil stators are fixedly installed on the stator support. A fixed pulley is coaxially arranged on the outer periphery of the power generation induction coil stator. The inner ring of the fixed pulley is integrally and coaxially arranged on the outer wall of the rotor cylinder. A number of permanent magnets are fixedly arranged in a circumferential array on the inner wall of the rotor cylinder, surrounding the outer periphery of the power generation induction coil stator. The two ends of the outer wall of the rotor cylinder are rotatably installed on the bearing seats through bearings, and the bearing seats are fixed on the upper side of the annular floating structure.

[0010] A solid counterweight is coaxially and fixedly connected with a central traction rod extending upward; A section of pulley drive rope is strung across the upper part of the fixed pulley of each wave power generator; One end of a section of each pulley drive rope close to the axis of the annular floating structure obliquely passes through the inner ring of the annular floating structure downward and is fixedly connected to the upper end of the central traction rod; One end of a section of each pulley drive rope away from the axis of the annular floating structure extends downward, and the end is fixedly connected to the upper end of a vertical telescopic spring; The lower ends of the vertical telescopic springs are fixedly connected to the upper ends of downward extending underwater traction lines. A number of underwater traction lines are distributed in a circumferential array, and the lower ends of the underwater traction lines are fixedly connected to the upper contour edge of the trumpet-shaped elastic ring wall. Under the weight traction of the underwater counterweight stabilizer, the underwater traction lines, the vertical telescopic springs and the pulley drive ropes are all in a relatively taut state.

[0011] Furthermore, the photovoltaic power generation unit is fixedly supported on the upper ends of the stator supports of several wave power generators.

[0012] Furthermore, small thrusters are installed around the annular floating structure, so that the floating power generation device can finely adjust the relative position between the artificial floating island and itself;

[0013] Furthermore, the current generated by the floating power generation device is transmitted to the power connection device on the artificial floating island through the wire on the traction line.

[0014] Beneficial effects: The underwater counterweight stabilizer can inhibit the excessive upward surging of the annular floating structure, play a role in stabilizing the annular floating structure, avoid the excessive up and down undulation of the annular floating structure caused by sea waves, and ultimately avoid the excessive up and down violent shaking of the photovoltaic power generation unit, thereby extending the service life of the photovoltaic power generation unit and preventing damage due to excessive shaking; In the process that the longitudinal surging of the periodic sea waves on the sea surface makes the annular floating structure fluctuate up and down periodically, while the underwater counterweight stabilizer inhibits the intensity of the up and down surging of the annular floating structure, each wave power generator generates a power generation cycle, thus realizing the complementarity of photovoltaic and wave power generation, and at the same time using the energy of sea waves to generate power to inhibit the up and down shaking of the photovoltaic power generation unit. Description of the Drawings

[0015] Figure 1 It is a schematic three-dimensional view of the whole scheme;

[0016] Figure 2 Schematic diagram of the device floating in water;

[0017] Figure 3 Cross-sectional view of the device;

[0018] Figure 4 Exploded view of the device. Detailed implementation mode

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] As shown in the attached Figures 1 to 4 Follow-up floating power generation system of the artificial floating island shown, such as Figure 1 and 2 , includes an artificial floating island floating on the sea surface and a floating power generation device 60; the floating power generation device 60 is traction-connected to the artificial floating island through a traction line 8, so that the floating power generation device 60 always follows the artificial floating island under the traction of the traction line 8, and the current generated by the floating power generation device 60 is transmitted to the power connection device on the artificial floating island through the wire on the traction line 8; the floating power generation device 60 includes an annular floating structure 9, a photovoltaic power generation unit 7 and a wave power generation unit; the traction line 8 is connected to the annular floating structure 9; small thrusters are installed around the annular floating structure 9 of this case, so that the floating power generation device 60 can finely adjust the relative position between the artificial floating island and itself.

[0021] An underwater counterweight stabilizer 1 with a pointed-down bullet shape is coaxially traction-connected at a depth of more than 20m below the annular floating structure 9. This case is in a shallow sea area. Usually, the water body 20 to 40 meters below the sea surface will not be directly affected by the surface waves. Below this depth, the influence of the sea waves will be significantly weakened, and the underwater counterweight stabilizer 1 will not move up and down directly by the surface waves.

[0022] As shown in Figure 3 , the lower end of the underwater counterweight stabilizer 1 is a solid counterweight body 1b, and the solid counterweight body 1b is a solid body with a density significantly higher than that of seawater, such as cement, metal, etc. The upper end of the solid counterweight body 1b is coaxially and integrally connected along the contour with a gradually thickening upward trumpet-shaped elastic ring wall 1a. The main material of the trumpet-shaped elastic ring wall 1a is a fluororubber inner and outer layer, and the middle layer is a high molecular weight polyethylene fiber reinforced composite material. The trumpet mouth 2 of the trumpet-shaped elastic ring wall 1a faces upward; when the underwater counterweight stabilizer 1 suddenly moves upward as a whole from the static state, the pressure suddenly increases in the trumpet mouth 2 under the downward water resistance extrusion, so that the trumpet-shaped elastic ring wall 1a expands, and further enhances the water resistance when the underwater counterweight stabilizer 1 moves upward.

[0023] The wave power generation unit includes wave power generators 18 that are installed in a circumferential array on the upper side of the annular floating structure 9; there are four wave power generators 18 distributed in a circumferential array on the upper side of the annular floating structure 9.

[0024] The wave power generator 18 includes a stator support 13, on which a horizontal power generation induction coil stator 11 is fixedly installed. A fixed pulley 12 is coaxially arranged on the outer periphery of the power generation induction coil stator 11. The inner ring of the fixed pulley 12 is integrally arranged coaxially on the outer wall of the rotor cylinder 15. A number of permanent magnets 16 are fixedly arranged in a circumferential array on the inner wall of the rotor cylinder 15, and the permanent magnets 16 surround the outer periphery of the power generation induction coil stator 11; both ends of the outer wall of the rotor cylinder 15 are rotatably installed on the bearing seats 14 through bearings, and the bearing seats 14 are fixed on the upper side of the annular floating structure 9.

[0025] The photovoltaic power generation unit 7 of this case is fixedly supported on the upper ends of the stator supports 13 of a number of wave power generators 18.

[0026] A central traction rod 10 extending upward is coaxially fixedly connected to the solid counterweight 1b; a section of a pulley drive rope 6 is strung across the upper part of each fixed pulley 12 of the wave power generators 18; one end of a section of each pulley drive rope 6 close to the axis of the annular floating structure 9 obliquely penetrates downward through the inner ring 4 of the annular floating structure 9 and is fixedly connected to the upper end of the central traction rod 10; a section of each pulley drive rope 6 away from the axis of the annular floating structure 9 extends downward, and the end is fixedly connected to the upper end of a vertical telescopic spring 5.

[0027] Such as Figure 3 and 4 , a section of the pulley drive rope 6 away from the axis of the annular floating structure 9 is denoted as the vertical section 6.2 of the drive rope, and a section of the pulley drive rope 6 close to the axis of the annular floating structure 9 is denoted as the oblique section 6.1 of the drive rope.

[0028] The vertical telescopic spring 5 is made of 316 stainless steel. 316 stainless steel contains molybdenum elements, which significantly improves the resistance to pitting corrosion and crevice corrosion and is suitable for long-term immersion in seawater or high-salt fog environments.

[0029] The lower ends of the vertical telescopic springs 5 are fixedly connected to the upper ends of the underwater traction lines 3 extending downward. A number of underwater traction lines 3 are distributed in a circumferential array, and the lower ends of the underwater traction lines 3 are fixedly connected to the upper contour edges of the upper ends of the horn-shaped elastic ring walls 1a. Under the weight traction of the underwater counterweight stabilizer 1, the underwater traction lines 3, the vertical telescopic springs 5, and the pulley drive ropes 6 are all in a relatively taut state.

[0030] The power generation and floating stability principle of the floating power generation device 60:

[0031] The sea area where this case is located is a shallow sea area with relatively stable meteorological conditions. Generally, under normal conditions in the shallow sea, the sea surface will periodically generate longitudinal surging waves. The water body 20 to 40 meters below the sea surface will not be directly affected by the surface waves. Below this depth, the influence of the surface waves will be significantly weakened, and the underwater counterweight stabilizer 1 will not move up and down directly under the influence of the surface waves;

[0032] In this case, on the basis of the stable state, when the annular floating structure 9 suddenly moves upward as a whole under the longitudinal surging of the surface waves, the underwater counterweight stabilizer 1 originally stable underwater also suddenly moves upward as a whole under the combined linkage traction of the central traction rod 10 and several underwater traction lines 3 arranged in a circular array. As a result, the pressure in the inner cavity of the bell mouth 2 of the underwater counterweight stabilizer 1 suddenly increases under the squeezing of the downward water resistance, so that the bell-shaped elastic ring wall 1a expands adaptively, further increasing the water resistance when the underwater counterweight stabilizer 1 moves upward, thereby inhibiting the excessive upward surging of the annular floating structure 9, playing a role in stabilizing the annular floating structure 9, avoiding excessive up and down fluctuations of the annular floating structure 9 caused by the waves, and finally avoiding excessive violent shaking of the photovoltaic power generation unit 7 up and down, thus prolonging the service life of the photovoltaic power generation unit 7 and preventing damage due to excessive shaking;

[0033] At the same time, during the upward surging of the annular floating structure 9 under the action of the longitudinal waves, the expansion of the upper bell mouth 2 of the underwater counterweight stabilizer 1 causes a significant increase in the traction force of each underwater traction line 3. As a result, each vertical telescopic spring 5 is significantly stretched under the increased traction force, increasing the distance between the underwater counterweight stabilizer 1 and the annular floating structure 9; since the length of the central traction rod 10 is fixed, the increase in the distance between the underwater counterweight stabilizer 1 and the annular floating structure 9 will cause the inclined sections 6.1 of the driving ropes of each pulley driving rope 6 to become longer synchronously, and then the vertical sections 6.2 of the driving ropes of each pulley driving rope 6 to become shorter synchronously;

[0034] During the process that the inclined sections 6.1 of the driving ropes of each pulley driving rope 6 become longer synchronously and the vertical sections 6.2 of the driving ropes of each pulley driving rope 6 become shorter synchronously, each fixed pulley 12 will rotate adaptively under the driving of the linear motion of each pulley driving rope 6, causing each permanent magnet 16 to rotate around the outer periphery of the stator of the power generation induction coil 11 and cut the magnetic induction lines, generating an induced current in the stator of the power generation induction coil 11 to generate electricity. When the first wave of waves ends, this device adapts back to the initial position and waits for the second wave of waves;

[0035] According to this rule, during the process in which the longitudinal surging of the periodic sea waves makes the annular floating structure 9 fluctuate up and down periodically, while the underwater counterweight stabilizer 1 suppresses the intensity of the up and down surging of the annular floating structure 9, each wave power generator 18 generates a power generation cycle, thereby realizing the complementarity of photovoltaic power generation and wave power generation. At the same time, the up and down shaking of the photovoltaic power generation unit 7 is suppressed by using the energy of the sea waves to generate power.

[0036] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. The following floating power generation system of the artificial floating island is characterized by: The invention comprises an artificial floating island floating on the sea surface and a floating power generation device (60); the floating power generation device (60) is connected to the artificial floating island by traction through a traction line (8); the floating power generation device (60) comprises an annular floating structure (9), a photovoltaic power generation unit (7) and a wave power generation unit; the wave power generation unit comprises a plurality of wave generators (18) installed in a circular array on the upper side of the annular floating structure (9); and a bullet-shaped underwater counterweight stabilizer (1) with a tip facing downward is coaxially traction-connected to the lower side of the annular floating structure (9).

2. The follow-up floating power generation system of the artificial floating island according to claim 1 is characterized in that: The underwater counterweight stabilizer (1) is located at a depth of more than 20m below the annular floating structure (9).

3. The follow-up floating power generation system of the artificial floating island according to claim 1 is characterized in that: The lower end of the underwater counterweight stabilizer (1) is a solid counterweight body (1b), and the upper end of the solid counterweight body (1b) is integrally connected along the contour to a trumpet-shaped elastic ring wall (1a) that gradually becomes thicker upward, and the trumpet mouth (2) of the trumpet-shaped elastic ring wall (1a) faces upward; when the underwater counterweight stabilizer (1) suddenly deflects upward as a whole from a static state, the pressure inside the trumpet mouth (2) suddenly increases under the downward water resistance squeezing, thereby expanding the trumpet-shaped elastic ring wall (1a).

4. The follow-up floating power generation system of the artificial floating island according to claim 3 is characterized in that: The main body material of the trumpet-shaped elastic ring wall (1a) is a fluororubber inner and outer layer, and the middle layer is a high molecular weight polyethylene fiber reinforced composite material.

5. The follow-up floating power generation system of the artificial floating island according to claim 3 is characterized in that: Each wave generator (18) comprises a stator bracket (13), on which a horizontal power generation induction coil stator (11) is fixedly mounted, a fixed pulley (12) is coaxially arranged on the outer periphery of the power generation induction coil stator (11), the inner ring of the fixed pulley (12) is coaxially arranged on the outer wall of a rotor barrel (15), and a plurality of permanent magnets (16) are fixedly arranged on the inner wall of the rotor barrel (15) in a circular array, and the permanent magnets (16) surround the outer periphery of the power generation induction coil stator (11); both ends of the outer wall of the rotor barrel (15) are rotatably mounted on a bearing seat (14) through bearings, and the bearing seat (14) is fixed on the upper side of the annular floating structure (9); A central traction rod (10) extending upward is coaxially fixedly connected to the solid counterweight body (1b); a section of pulley driving rope (6) is passed around the upper part of the fixed pulley (12) of each wave generator (18); the end of a section of each pulley driving rope (6) close to the axis of the annular floating structure (9) passes obliquely downward through the inner ring (4) of the annular floating structure (9) and is then fixedly connected to the upper end of the central traction rod (10); a section of each pulley driving rope (6) away from the axis of the annular floating structure (9) extends downward, The end is fixedly connected to the upper end of a vertical telescopic spring (5); the lower end of each vertical telescopic spring (5) is fixedly connected to the upper end of an underwater traction line (3) extending downward, a plurality of underwater traction lines (3) are distributed in a circular array, and the lower end of each underwater traction line (3) is fixedly connected to the upper end contour edge of a trumpet-shaped elastic ring wall (1a); under the weight traction of the underwater counterweight stabilizer (1), each underwater traction line (3), the vertical telescopic spring (5) and the pulley drive rope (6) are all in a relatively taut state.

6. The follow-up floating power generation system of the artificial floating island according to claim 5 is characterized in that: The photovoltaic power generation unit (7) is fixedly supported on the upper end of the stator bracket (13) of a plurality of wave power generators (18).

7. The follow-up floating power generation system of the artificial floating island according to claim 1 is characterized in that: Small propellers are installed around the annular floating structure (9), so that the floating power generation device (60) can fine-tune its relative position with the artificial floating island.

8. The traction line (8) according to claim 1 is connected to the annular floating structure (9); the current generated by the floating power generation device (60) is transmitted to the power connection device on the artificial floating island through the conductor on the traction line (8).

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