Tidal current energy generator set lifting structure

Abstract

The invention provides a lifting structure of a tidal current energy generator set, which comprises a basic cross frame, the basic cross frame is provided with at least two vertical guide columns and a grid frame, a paddle generator set is arranged in the center of the grid frame, guide assemblies are arranged at two ends of the grid frame, each guide column is movably sleeved with each guide assembly, an upper buoy is arranged at the upper end of each guide assembly, and a lower buoy is arranged at the lower end of each guide assembly. The upper end of the upper buoy is higher than the highest point of the blade generator set, a lower buoy assembly is arranged at the lower end of each guide assembly, a cavity structure, a balance air valve and a water inlet and outlet valve are arranged in each lower buoy assembly, and the problem that the blade generator set is exposed above the water surface when the tidewater fluctuation water level difference is large is solved.

Description

Technical Field

[0001] The invention relates to the field of tidal energy power generation, and in particular to a tidal energy generator set lifting structure. Background Art

[0002] Tidal power generation is a renewable energy technology that uses the kinetic energy generated by the periodic rise and fall of seawater tides to convert it into electrical energy. The basic principle is similar to wind power generation. When water flows through the blades of a generator set installed below the water surface, its kinetic energy will drive the blades to rotate, thereby driving the generator to generate electricity. Nowadays, my country and other countries have successively built some tidal power generation devices.

[0003] The main structure of the tidal power generation device is a base building built on the water surface. Based on this, the generator set is installed a certain distance below the water surface. During high and low tides, both positive and reverse water flow can drive the blades to rotate and generate electricity. However, due to the large water level difference during high tides, the blade generator set may be exposed above the water surface and lose its power generation function. Summary of the invention

[0004] The present invention provides a tidal energy generator set lifting structure, which solves the problem that the blade generator set is exposed above the water surface when the water level difference due to tidal rise and fall is large.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a lifting structure of a tidal energy generator set, including a basic cross frame, the basic cross frame is provided with at least two vertical guide columns, and a grid frame, a blade generator set is provided in the center of the grid frame, and guide components are provided at both ends of the grid frame. Each guide component is movably sleeved on each guide column, and an upper buoy is provided at the upper end of each guide component. The upper end of the upper buoy is higher than the highest point of the blade generator set, and a lower buoy assembly is provided at the lower end of each guide assembly. A cavity structure and a balancing air valve and an inlet and outlet water valve connected to the cavity structure are provided in the lower buoy assembly.

[0006] In the preferred embodiment, the guide assembly includes a basic sleeve, and guide sleeve assemblies are provided at the upper and lower ends of the basic sleeve. The guide sleeve assembly is provided with tangential through holes along the circumferential direction, and the center of the tangential through holes penetrates the inner wall of the guide sleeve assembly. A rotatable roller is provided in the tangential through holes, and the roller rolls against the outer wall of the guide column.

[0007] In a preferred embodiment, the roller includes a central large diameter portion and a small diameter portion arranged at both ends. A shoulder structure is formed at the connection between the large diameter portion and the small diameter portion. The length of the large diameter portion is greater than the length of the roller. Each small diameter portion is sleeved with a limit nut, and the limit nut rests on the shoulder structure.

[0008] In the preferred solution, a top frame is provided above the basic cross frame, the top frame is provided with a reduction motor, and a suspension rod is provided. The upper end of the suspension rod is connected to the reduction motor, and a stop block is provided at the lower end of the suspension rod. A sliding sleeve is provided on one side of the guide assembly, the suspension rod and the sliding sleeve are slidably connected, and a stop hole is provided at the upper end of the sliding sleeve, and the inner diameter of the stop hole is smaller than the outer diameter of the stop block.

[0009] In the preferred embodiment, the reduction motor includes a machine base, a rotatable worm is provided in the machine base, a rotatable worm wheel is provided on one side of the worm, the worm wheel is meshed with the worm, a screw sleeve is provided in the worm wheel, the screw sleeve is threadedly connected to the suspension rod, and a drive motor is also provided on the machine base, and the shaft end of the drive motor is connected to the worm.

[0010] In a preferred solution, a liftable interception cover is further provided on the outside of the blade generator set, and the interception cover is provided with a plurality of flow-through mesh holes.

[0011] In a preferred solution, the interception cover includes a U-shaped first mesh cover and a second mesh cover, the opening ends of the first mesh cover and the second mesh cover are fitted together to form a rectangular interception cover, and the first mesh cover and the second mesh cover can be raised and lowered independently.

[0012] In the preferred embodiment, a slot slider is provided at the opening end of the second mesh cover, a vertical snap-in guide rail is provided at the opening end of the first mesh cover, the slot slider and the snap-in guide rail are slidably connected, a central hollow portion is provided at the top frame, a guide slider mechanism is provided on the inner wall of the central hollow portion between the first mesh cover and the second mesh cover, a lifting motor is provided on the top frame, a gear is provided at the shaft end of the driving shaft of the lifting motor, a vertical rack is provided on the outer side walls of the first mesh cover and the second mesh cover, and the gear is meshed with the rack.

[0013] In the preferred scheme, the central hollow portion is provided with an avoidance gap, and bearing seats are provided at both ends of the avoidance gap. A rotatable sleeve is provided in each bearing seat, and each gear is sleeved on the outer wall of each sleeve. One end of the two sleeves is connected to the drive shaft, and the other ends of the two sleeves are abutted and a connecting shaft is sleeved at the abutting point. The outer wall of the connecting shaft is provided with a slip ring that contacts the inner wall of the sleeve, and annular grooves are provided at both ends of the connecting shaft. A pin is provided at the end of the sleeve, and one end of the pin is stuck in the annular groove.

[0014] In a preferred solution, the first mesh cover and the second mesh cover are both provided with a plurality of parallel vertical grids and a plurality of parallel horizontal grids, and the plurality of vertical grids and the horizontal grids are vertically arranged to form a plurality of flow-through meshes.

[0015] The beneficial effects of the present invention are as follows: floating components are arranged at both ends of the installation grid of the blade generator set, and the buoyancy is adjusted to make the component as a whole suspended, and the diving depth can be automatically changed with the water level to ensure that the generator set is always below the water surface; the upper and lower limit components are formed by the sliding sleeves of the suspension rod and the guide component to prevent the water level from being too low and the unit from touching the bottom and causing damage to the blades; a floating object interception structure is composed of a double mesh cover that can be independently raised and lowered, which can be alternately lifted and cleaned according to the direction of the tide, thereby preventing floating objects from accumulating for a long time and clogging the front of the blade generator set, and cleaning the garbage in the water body to improve environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the present invention.

[0018] Figure 2 is a cross-sectional schematic diagram of the guide assembly.

[0019] Figure 3 It is a schematic side section diagram of the guide assembly and the lower buoy assembly.

[0020] Figure 4 is a cross-sectional view of the guide assembly.

[0021] Figure 5 This is an exploded view of the guide assembly.

[0022] Figure 6 It is a cross-sectional view of the guide assembly roller.

[0023] Figure 7 This is a schematic diagram of the reduction motor from a top view.

[0024] Figure 8 This is a schematic diagram of the speed motor from a vertical perspective.

[0025] Fig. 9 This is a schematic diagram of the supplementary interception shield scheme.

[0026] Fig.10 This is a top view of the interceptor cover.

[0027] Fig.11 It is a side view of the interceptor hood.

[0028] Fig.12 It is a schematic diagram of the independent lifting of the first net cover and the second net.

[0029] Fig.13 This is a schematic diagram of the abutment point of the sleeve.

[0030] In the figure: basic horizontal frame 1; top frame 2; central hollow part 201; avoidance gap 202; grid frame 3; blade generator set 301; guide assembly 4; basic sleeve 401; guide sleeve assembly 402; roller 403; shoulder structure 404; tangential through hole 405; sliding bushing 406; limit nut 407; outer sleeve 408; sliding sleeve 409; lower buoy assembly 5; cavity structure 501; balance air valve 502; inlet and outlet valve 503; liquid pump 504; guide column 6; upper buoy 7; reduction motor 8; drive motor 801; worm Rod 802; worm gear 803; screw sleeve 804; machine base 805; block 806; slide groove 807; suspension rod 9; block 901; stop hole 902; interception cover 10; first mesh cover 1001; second mesh cover 1002; vertical grid 1003; horizontal grid 1004; slot slider 11; snap-in guide rail 12; rack 13; gear 14; drive shaft 15; lifting motor 16; guide rail slider mechanism 17; bushing 18; connecting shaft 19; annular groove 1901; snap pin 1902; bearing seat 1903; slip ring 20. DETAILED DESCRIPTION

[0031] like Figure 1-13 A tidal energy generator set lifting structure is disclosed, including a basic cross frame 1, wherein the basic cross frame 1 is provided with at least two vertical guide columns 6, and a grid frame 3 is further provided. A blade generator set 301 is provided in the center of the grid frame 3, and guide assemblies 4 are provided at both ends of the grid frame 3. Each guide assembly 4 is movably sleeved on each guide column 6, and an upper buoy 7 is provided at the upper end of each guide assembly 4. The upper end of the upper buoy 7 is higher than the highest point of the blade generator set 301, and a lower buoy assembly 5 is provided at the lower end of each guide assembly 4. A cavity structure 501 and a balancing air valve 502 and an inlet and outlet water valve 503 connected to the cavity structure 501 are provided in the lower buoy assembly 5.

[0032] The upper buoy 7 is made of low-density material, and is provided with a cavity and filled with air, so that the whole can generate a large buoyancy. The upper buoy 7 is sleeved on the guide column 6 and connected to the upper end of the guide assembly 4.

[0033] The balance air valve 502 is connected to the water surface through a pipeline, and the inlet and outlet water valves 503 are connected to the liquid pump 504. The liquid pump 504 injects a certain amount of water into the cavity structure 501 through the inlet and outlet water valves 503. The balance air valve 502 exhausts the balanced air pressure to ensure that the highest part of the blades of the blade generator set 301 can be submerged in water. At this time, the entire floating structure is in a suspended state. Regardless of whether it is high tide or low tide, the blade generator set 301 can rise or fall with the change of the liquid level, so that the blade generator set 301 is always under the water surface to ensure the power generation.

[0034] The grid frame 3 is welded into a hollow structure using sheet plates, and a mounting seat of the blade generator set 301 is welded in the center. The hollow structure ensures that water flows through quickly without affecting the power generation efficiency.

[0035] In the preferred embodiment, the guide assembly 4 includes a basic sleeve 401, and guide sleeve assemblies 402 are provided at the upper and lower ends of the basic sleeve 401. The guide sleeve assembly 402 is provided with a tangential through hole 405 along the circumferential direction. The center of the tangential through hole 405 penetrates the inner wall of the guide sleeve assembly 402. A rotatable roller 403 is provided in the tangential through hole 405, and the roller 403 rolls against the outer wall of the guide column 6.

[0036] The roller 403 is embedded in the tangential through hole 405, which is convenient for processing the sealing groove structure at both ends and sleeve sealing rings to prevent water debris from entering and improve the protection level. The roller 403 can be arranged in two layers, with circumferential angles staggered, so that multiple contact points with the guide column 6 can be formed to ensure appropriate contact pressure and reduce shaking.

[0037] A sliding bushing 406 made of ceramic or other materials that is wear-resistant and has a low friction coefficient is disposed in the tangential through hole 405 , and the roller 403 is slidably sleeved with the sliding bushing 406 .

[0038] In a preferred embodiment, the roller 403 includes a large diameter portion in the center and small diameter portions arranged at both ends. A shoulder structure 404 is formed at the connection between the large diameter portion and the small diameter portion. The length of the large diameter portion is greater than the length of the roller 403. Each small diameter portion is sleeved with a limit nut 407, and the limit nut 407 rests on the shoulder structure 404.

[0039] The limit nuts 407 at both ends limit the lateral movement of the roller 403 but do not affect the rotation of the roller 403.

[0040] An outer sheath 408 is sleeved on the outer side of the guide sleeve assembly 402 to close the step holes at both ends of the tangential through hole 405 to prevent mud and other debris in the water from entering.

[0041] In the preferred solution, a top frame 2 is provided above the basic cross frame 1, the top frame 2 is provided with a reduction motor 8, and a suspension rod 9 is provided. The upper end of the suspension rod 9 is connected to the reduction motor 8, and the lower end of the suspension rod 9 is provided with a stop block 901. A sliding sleeve 409 is provided on one side of the guide assembly 4, and the suspension rod 9 is slidably connected to the sliding sleeve 409. A stop hole 902 is provided at the upper end of the sliding sleeve 409, and the inner diameter of the stop hole 902 is smaller than the outer diameter of the stop block 901.

[0042] There is a certain distance between the block 901 and the stop hole 902, which does not affect the floating of the blade generator set 301 with the tide. It is mainly used for the overall lifting, raising and lowering of the floating structure when disassembling and assembling. In special cases, for example, when the ebb tide is lower than the preset height, the floating components such as the blade generator set 301 and the basic set 401 continue to descend, and the stop hole 902 moves to the stop hole 902 and is stopped, and the blade generator set 301 cannot continue to descend, preventing the blades from touching the seabed or underwater reefs.

[0043] The downward extension length of the suspension rod 9 can be adjusted by the reduction motor 8 to adapt to different working conditions.

[0044] In the preferred embodiment, the reduction motor 8 includes a machine base 805, a rotatable worm 802 is provided inside the machine base 805, a rotatable worm wheel 803 is provided on one side of the worm 802, the worm wheel 803 is meshed with the worm 802, a screw sleeve 804 is sleeved inside the worm wheel 803, the screw sleeve 804 is threadedly connected to the suspension rod 9, and a drive motor 801 is also provided on the machine base 805, and the shaft end of the drive motor 801 is connected to the worm 802.

[0045] The driving motor 801 drives the worm 802 to rotate, and the worm 802 drives the worm wheel 803 and the screw sleeve 804 to rotate. The inner side of the screw sleeve 804 and the outer side of the suspension rod 9 are provided with T-shaped threads, and a clamping block 806 is provided on the machine base 805. A vertical slide groove 807 is provided on the outer wall of the suspension rod 9. The clamping block 806 is stuck in the slide groove 807 and slides. Therefore, when the screw sleeve 804 rotates, the suspension rod 9 rises and falls vertically.

[0046] In a preferred solution, a liftable interception cover 10 is further provided on the outside of the blade generator set 301, and the interception cover 10 is provided with a plurality of flow-through mesh holes.

[0047] The flow mesh is used to allow water to pass through, but it can intercept floating or suspended strips of garbage or water plants, etc. in the water, and can also intercept objects with a larger area to protect the blade generator set 301 and prevent the blade generator set 301 from being entangled.

[0048] In a preferred embodiment, the interception cover 10 includes a U-shaped first mesh cover 1001 and a second mesh cover 1002. The opening ends of the first mesh cover 1001 and the second mesh cover 1002 fit together to form a rectangular interception cover 10. The first mesh cover 1001 and the second mesh cover 1002 can be raised and lowered independently.

[0049] Due to the reverse periodic exchange of the tide, the mesh cover on the water-facing side can be kept sunk in front of the blade generator set 301 according to the direction of the tide, and the other mesh cover on the back side can be raised to facilitate cleaning of intercepted water plants, floating objects, etc.

[0050] Clean both sides alternately to avoid clogging of the interception cover 10 due to long-term cleaning.

[0051] In the preferred embodiment, a slot slider 11 is provided at the open end of the second mesh cover 1002, and a vertical snap-in guide rail 12 is provided at the open end of the first mesh cover 1001. The slot slider 11 and the snap-in guide rail 12 are slidably connected. The top frame 2 is provided with a central hollow portion 201, and a guide slider mechanism 17 is provided on the inner wall of the central hollow portion 201 between the first mesh cover 1001 and the second mesh cover 1002. A lifting motor 16 is provided on the top frame 2, and a gear 14 is provided at the shaft end of the driving shaft 15 of the lifting motor 16. A vertical rack 13 is provided on the outer side walls of the first mesh cover 1001 and the second mesh cover 1002, and the gear 14 is meshed with the rack 13.

[0052] The lifting motor 16 is a reduction motor. The first net cover 1001 and the second net cover 1002 are lifted by different lifting motors 16 installed above the water surface. The lower ends of the first net cover 1001 and the second net cover 1002 are lifted above the water surface to facilitate cleaning by staff.

[0053] In the preferred solution, the central hollow portion 201 is provided with an avoidance gap 202, and bearing seats 1903 are provided at both ends of the avoidance gap 202. A rotatable sleeve 18 is provided in each bearing seat 1903, and each gear 14 is sleeved on the outer wall of each sleeve 18. One end of the two sleeves 18 is connected to the drive shaft 15, and the other ends of the two sleeves 18 are abutted and a connecting shaft 19 is sleeved at the abutting point. The outer wall of the connecting shaft 19 is provided with a slip ring 20 that contacts the inner wall of the sleeve 18, and annular grooves 1901 are provided at both ends of the connecting shaft 19. A retaining pin 1902 is provided at the end of the sleeve 18, and one end of the retaining pin 1902 is clamped in the annular groove 1901.

[0054] The locking pin 1902 is loosely fitted in the annular groove 1901 and does not interfere with the relative rotation of the connecting shaft 19 and the sleeve 18 .

[0055] The two shaft sleeves 18 are rotatably connected via a connecting shaft 19 to avoid forming a cantilever structure that causes the gear 14 to swing.

[0056] In a preferred solution, the first mesh cover 1001 and the second mesh cover 1002 are both provided with a plurality of parallel vertical grids 1003 and a plurality of parallel horizontal grids 1004, and the plurality of vertical grids 1003 and the horizontal grids 1004 are vertically arranged to form a plurality of flow-through meshes.

[0057] The first mesh cover 1001 and the second mesh cover 1002 are provided with notches at their lower ends to avoid the grille 3 .

[0058] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A lifting structure for a tidal energy generator set, characterized by: The invention comprises a basic horizontal frame (1), wherein the basic horizontal frame (1) is provided with at least two vertical guide posts (6), and further provided with a grid frame (3), wherein a blade generator set (301) is provided at the center of the grid frame (3), and guide assemblies (4) are provided at both ends of the grid frame (3), wherein each guide assembly (4) is movably sleeved on each guide post (6), wherein an upper buoy (7) is provided at the upper end of each guide assembly (4), wherein the upper end of the upper buoy (7) is higher than the highest point of the blade generator set (301), and wherein a lower buoy assembly (5) is provided at the lower end of each guide assembly (4), wherein a cavity structure (501) and a balancing air valve (502) and an inlet and outlet water valve (503) which are communicated with the cavity structure (501) are provided in the lower buoy assembly (5).

2. According to the lifting structure of the tidal energy generator set of claim 1, it is characterized by: The guide assembly (4) comprises a basic sleeve (401), wherein the basic sleeve (401) is provided with a guide sleeve assembly (402) at both ends, wherein the guide sleeve assembly (402) is provided with a tangential through hole (405) along the circumference, wherein the center of the tangential through hole (405) penetrates the inner wall of the guide sleeve assembly (402), wherein a rotatable roller (403) is provided in the tangential through hole (405), and the roller (403) rolls against the outer wall of the guide column (6).

3. The lifting structure of the tidal current energy generator set according to claim 2 is characterized in that: The roller (403) comprises a central large diameter portion and small diameter portions arranged at both ends, a shaft shoulder structure (404) is formed at the connection between the large diameter portion and the small diameter portion, the large diameter portion is longer than the length of the roller (403), each small diameter portion is sleeved with a limit nut (407), and the limit nut (407) abuts against the shaft shoulder structure (404).

4. According to the lifting structure of the tidal energy generator set in claim 1, it is characterized in that: A top frame (2) is also provided above the cross frame (1), the top frame (2) is provided with a reduction motor (8), and a suspension rod (9) is also provided, the upper end of the suspension rod (9) is connected to the reduction motor (8), the lower end of the suspension rod (9) is provided with a stopper (901), a sliding sleeve (409) is provided on one side of the guide assembly (4), the suspension rod (9) and the sliding sleeve (409) are slidably connected, a stopper hole (902) is provided at the upper end of the sliding sleeve (409), and the inner diameter of the stopper hole (902) is smaller than the outer diameter of the stopper block (901).

5. The lifting structure of the tidal current energy generator set according to claim 4 is characterized in that: The reduction motor (8) comprises a machine base (805), a rotatable worm (802) is arranged inside the machine base (805), a rotatable worm wheel (803) is arranged on one side of the worm (802), the worm wheel (803) is meshed with the worm (802), a screw sleeve (804) is sleeved inside the worm wheel (803), the screw sleeve (804) is threadedly connected to the suspension rod (9), and a driving motor (801) is also arranged on the machine base (805), and the shaft end of the driving motor (801) is connected to the worm (802).

6. The lifting structure of the tidal current energy generator set according to claim 6 is characterized in that: A liftable interception cover (10) is also provided on the outside of the blade generator set (301), and the interception cover (10) is provided with a plurality of flow-through mesh holes.

7. The lifting structure of the tidal energy generator set according to claim 6 is characterized in that: The interception cover (10) comprises a U-shaped first mesh cover (1001) and a second mesh cover (1002); the opening ends of the first mesh cover (1001) and the second mesh cover (1002) are fitted together to form a rectangular interception cover (10); and the first mesh cover (1001) and the second mesh cover (1002) can be raised and lowered independently.

8. The lifting structure of the tidal current energy generator set according to claim 7 is characterized in that: The second net cover (1002) is provided with a slot slider (11) at the open end, the first net cover (1001) is provided with a vertical slot guide rail (12) at the open end, the slot slider (11) and the slot guide rail (12) are slidably connected, the top frame (2) is provided with a central hollow portion (201), the inner wall of the central hollow portion (201) is provided with a guide slider mechanism (17) between the first net cover (1001) and the second net cover (1002), the top frame (2) is provided with a lifting motor (16), the shaft end of the driving shaft (15) of the lifting motor (16) is provided with a gear (14), the outer side walls of the first net cover (1001) and the second net cover (1002) are provided with a vertical rack (13), and the gear (14) is meshed with the rack (13).

9. The lifting structure of the tidal current energy generator set according to claim 8 is characterized in that: The central hollow portion (201) is provided with an avoidance notch (202), and bearing seats (1903) are provided at both ends of the avoidance notch (202). A rotatable shaft sleeve (18) is provided in each bearing seat (1903), and each gear (14) is sleeved on the outer wall of each shaft sleeve (18). One end of the two shaft sleeves (18) is connected to the drive shaft (15), and the other ends of the two shaft sleeves (18) are abutted against each other and a connecting shaft (19) is sleeved at the abutting position. The outer wall of the connecting shaft (19) is provided with a slip ring (20) that contacts the inner wall of the shaft sleeve (18), and an annular groove (1901) is provided at both ends of the connecting shaft (19). A retaining pin (1902) is provided at the end of the shaft sleeve (18), and one end of the retaining pin (1902) is clamped in the annular groove (1901).

10. The lifting structure of the tidal current energy generator set according to claim 6 is characterized in that: The first mesh cover (1001) and the second mesh cover (1002) are both provided with a plurality of parallel vertical grids (1003) and a plurality of parallel horizontal grids (1004); the plurality of vertical grids (1003) and the horizontal grids (1004) are arranged vertically to form a plurality of flow-through meshes.

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