A wind turbine and a method of controlling a wind turbine

Abstract

The application discloses a wind turbine guide device and a control method thereof, which comprises a cable-stayed frame installed between a tower drum and the ground, and a wind guide screen installed on the cable-stayed frame, a supporting block is installed on the left side of the tower drum, the top end of the cable-stayed frame is rotationally connected with the supporting block, a bottom support plate is rotationally installed at the bottom end of the cable-stayed frame, the bottom end of the wind guide screen is fixed to the bottom end of the cable-stayed frame, a connecting sliding sleeve is slidably sleeved on the surface of the cable-stayed frame, and the top end of the wind guide screen is connected with the connecting sliding sleeve, a base drum is sleeved and installed on the surface of the tower drum, and the supporting block is welded on the left side of the base drum, and an adjusting mechanism is arranged between the base drum and the tower drum; the base drum and the adjusting mechanism added on the original guide device can flexibly adjust the inclination angle of the wind guide screen according to actual use conditions and installation environment, greatly improve the overall use flexibility of the guide device, and solve the problem that the inclination of the wind guide screen in the original device cannot be adjusted.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of wind turbine generators, and particularly relates to a wind turbine generator guide device and a control method thereof. BACKGROUND

[0002] A wind turbine generator guide device and a control method thereof and a wind turbine generator are disclosed in Chinese patent authorization announcement No. CN111089029B, the guide device comprising a wind guide screen and a stay cable, the first end of the stay cable being fixed to the tower of the wind turbine generator, the second end of the stay cable being fixed to the ground, the wind guide screen being arranged between two adjacent stay cables to form a guide surface inclined relative to the vertical direction, and the like. By arranging the wind guide screen on one side of the tower of the wind turbine generator, the flow field around the wind turbine generator can be changed, the wind speed actually flowing through the impeller can be increased, and the power generation capacity can be increased.

[0003] However, the guide device in the above-mentioned application cannot be flexibly adjusted according to the actual use condition and installation environment because the inclination angle of the wind guide screen is fixed, resulting in low overall use flexibility of the guide device. The applicant proposes a new scheme again to solve the defect that the inclination angle of the wind guide screen is not adjustable. SUMMARY

[0004] The present application aims to provide a wind turbine generator guide device and a control method thereof to solve the problem of the inclination angle of the existing wind guide screen being not adjustable as mentioned in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a wind turbine generator guide device, comprising a stay cable frame installed between a tower and the ground, and a wind guide screen installed on the stay cable frame, a support block being installed on the left side of the tower, the top end of the stay cable frame being rotationally connected with the support block, a bottom support plate being rotationally installed at the bottom end of the stay cable frame, the bottom end of the wind guide screen being fixed to the bottom end of the stay cable frame, a connecting sliding sleeve being slidingly sleeved on the surface of the stay cable frame, the top end of the wind guide screen being connected with the connecting sliding sleeve, a base cylinder being sleeved and installed on the surface of the tower, the support block being welded on the left side of the base cylinder, and an adjusting mechanism being arranged between the base cylinder and the tower.

[0006] The adjusting mechanism comprises a top sleeve, T-shaped insertion blocks and insertion grooves, the top sleeve being fixed on the top of the base cylinder and also sleeved on the surface of the tower, a plurality of insertion grooves corresponding to the T-shaped insertion blocks being evenly formed on the surface of the tower, the T-shaped insertion blocks being inserted into one of the insertion grooves.

[0007] Preferably, limit stop plates are rotationally installed on the surface of the base cylinder, and the top end of the limit stop plate is in abutment with the outer end of the T-shaped insertion block.

[0008] Preferably, a clamping assembly is further arranged between the limiting baffle and the T-shaped plug, and the clamping assembly comprises a spring slot arranged in the T-shaped plug, a telescopic clamping bead is connected to the spring slot through a spring, a circular clamping hole corresponding to the telescopic clamping bead is arranged on the surface of the limiting baffle, and the end of the telescopic clamping bead is clamped into the circular clamping hole.

[0009] Preferably, a winding and unwinding mechanism connected to the connecting sliding sleeve is further arranged, the winding and unwinding mechanism comprises a winding and unwinding motor, a first pulley, a second pulley and a winding and unwinding rope, the winding and unwinding motor is arranged on the ground, the first pulley is arranged on the bottom of the supporting block, the second pulley is arranged on the inner side of the bottom end of the cable frame, and the winding and unwinding rope is wound around the winding and unwinding motor, the first pulley and the second pulley and connected to the connecting sliding sleeve.

[0010] Preferably, a tensioning mechanism is further arranged on one side of the tower drum, the tensioning mechanism comprises a supporting sleeve fixed on the side of the tower drum, a movable supporting column movably arranged at the end of the supporting sleeve, and a tensioning wheel rotatably arranged at the end of the movable supporting column and abutting against the winding and unwinding rope.

[0011] Preferably, the other end of the movable supporting column is slidably arranged in the supporting sleeve, and a limiting assembly is further arranged on the supporting sleeve.

[0012] Preferably, the limiting assembly comprises a nut seat, a limiting bolt and a limiting slot, the nut seat is fixed on the top of the supporting sleeve, a plurality of limiting slots corresponding to the nut seat are uniformly arranged on the top surface of the movable supporting column, and the limiting bolt penetrates through the nut seat and is inserted into one of the limiting slots.

[0013] A control method of a guide device of a wind turbine generator set, the control method comprising:

[0014] collecting power generation of the wind turbine generator set; comparing the collected power generation with rated power of the wind turbine generator set, and controlling the unfolding degree of the wind deflector according to the comparison result, if the power generation does not reach the rated power, the wind deflector is in an unfolded state; if the power generation reaches the rated power, the wind deflector is retracted.

[0015] Compared with the prior art, the beneficial effects of the present application are that: through the base cylinder and the adjusting mechanism added to the original guide device, the inclination angle of the wind deflector can be flexibly adjusted according to the actual use and installation environment, greatly improving the overall use flexibility of the guide device, and solving the problem that the inclination of the wind deflector in the original device is not adjustable. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the present application;

[0017] Figure 2 A region in the present application Figure 1 A region in the present application

[0018] Figure 3 A region in the present application Figure 1 A region in the present application

[0019] Figure 4 A region in the present application Figure 3 A region in the present application

[0020] Figure 5 A region in the present application Figure 2 A region in the present application

[0021] Figure 6 A region in the present application Figure 5 A region in the present application

[0022] Figure: 1, stay cable frame; 2, wind guide screen; 3, base cylinder; 4, support block; 5, adjusting mechanism; 51, top sleeve; 52, T-shaped plug block; 53, plug groove; 54, limiting baffle; 55, clamping assembly; 551, spring groove; 552, telescopic clamping bead; 553, circular clamping hole; 6, tower cylinder; 7, connecting sliding sleeve; 8, winding and unwinding motor; 9, first pulley; 10, second pulley; 11, bottom support plate; 12, winding and unwinding rope; 13, tensioning mechanism; 131, support sleeve; 132, movable support column; 133, tensioning wheel; 134, limiting assembly; 1341, nut seat; 1342, limiting bolt; 1343, limiting groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0024] Embodiment 1

[0025] Please refer to Figure 1 and Figure 2For the first embodiment of the application, the embodiment provides a technical solution: a wind turbine guide device, comprising a cable-stayed frame 1 installed between the tower 6 and the ground, and a wind guide screen 2 installed on the cable-stayed frame 1, the wind guide screen 2 can form an inclined surface to guide the wind upward, a support block 4 is installed on the left side of the tower 6, the top end of the cable-stayed frame 1 is rotationally connected with the support block 4, a bottom support plate 11 is rotationally installed at the bottom end of the cable-stayed frame 1, the bottom end of the wind guide screen 2 is fixed to the bottom end of the cable-stayed frame 1, a connecting sliding sleeve 7 is slidably sleeved on the surface of the cable-stayed frame 1, and the top end of the wind guide screen 2 is connected with the connecting sliding sleeve 7, the unfolding or folding of the wind guide screen 2 can be realized by the up and down sliding of the connecting sliding sleeve 7, a base cylinder 3 is sleeved and installed on the surface of the tower 6, and the support block 4 is welded on the left side of the base cylinder 3, further comprising a folding and unfolding mechanism connected with the connecting sliding sleeve 7, the folding and unfolding mechanism comprises a folding and unfolding motor 8, a first pulley 9, a second pulley 10 and a folding and unfolding rope 12, the folding and unfolding motor 8 is arranged on the ground, the first pulley 9 is installed at the bottom of the support block 4, the second pulley 10 is installed on the inner side of the bottom end of the cable-stayed frame 1, the folding and unfolding rope 12 passes through the folding and unfolding motor 8, the first pulley 9 and the second pulley 10, and is connected with the connecting sliding sleeve 7, the folding and unfolding rope 12 can be driven to rotate by the operation of the folding and unfolding motor 8, so that the connecting sliding sleeve 7 slides up and down with the folding and unfolding rope 12, and the unfolding or folding of the wind guide screen 2 is realized.

[0026] A control method for a wind turbine guide device, the control method comprising:

[0027] Collecting the power generation of the wind turbine, comparing the collected power generation with the rated power of the wind turbine, and controlling the unfolding degree of the wind guide screen 2 according to the comparison result, if the power generation does not reach the rated power, the wind guide screen 2 is in an unfolded state, and if the power generation reaches the rated power, the wind guide screen 2 is folded.

[0028] In summary, the wind turbine guide device can realize the folding or unfolding of the wind guide screen 2 by the operation of the folding and unfolding motor 8, so that the connecting sliding sleeve 7 slides on the cable-stayed frame 1 with the folding and unfolding rope 12, when the wind guide screen 2 is unfolded, the inclined surface formed can change the flow field around the wind turbine, increase the actual wind speed flowing through the impeller, and increase the power generation.

[0029] Embodiment 2

[0030] Please refer to Figures 1 to 4 For the second embodiment of the application, the embodiment is based on the previous embodiment, and the difference is that the height adjustment of the base cylinder 3 and the inclination angle adjustment of the cable-stayed frame 1 and the wind guide screen 2 can be realized by the adjusting mechanism 5.

[0031] Specifically, the adjusting mechanism 5 is arranged between the base cylinder 3 and the tower cylinder 6; the adjusting mechanism 5 comprises a top sleeve 51, a T-shaped plug 52 and a plug groove 53, the top sleeve 51 is welded and fixed at the top of the base cylinder 3 and also sleeved on the surface of the tower cylinder 6, the two side surfaces of the tower cylinder 6 are uniformly provided with a plurality of plug grooves 53 corresponding to the T-shaped plug 52, the two sides of the top sleeve 51 are penetrated by the T-shaped plug 52, and the inner end of the T-shaped plug 52 is inserted into one of the plug grooves 53, thereby achieving stable limiting of the base cylinder 3 and the top sleeve 51, and in the subsequent process, the T-shaped plug 52 can be inserted into other plug grooves 53 to change the height of the base cylinder 3 and the inclination angle of the stay cable frame 1 and the wind guide screen 2, and the two side surfaces of the base cylinder 3 are rotationally installed with limiting baffle plates 54, and the top end of the limiting baffle plate 54 is attached to the outer end of the T-shaped plug 52, thereby achieving stable blocking and limiting of the T-shaped plug 52.

[0032] Among them, the limiting baffle plate 54 and the T-shaped plug 52 are further provided with a clamping assembly 55, and the clamping assembly 55 comprises a spring groove 551 provided in the inner part of the T-shaped plug 52, a telescopic clamping bead 552 connected by a spring in the spring groove 551, and a circular clamping hole 553 provided on the surface of the limiting baffle plate 54 and corresponding to the telescopic clamping bead 552, and the end of the telescopic clamping bead 552 is clamped into the circular clamping hole 553, thereby achieving stable limiting after the rotation of the limiting baffle plate 54 and ensuring that the limiting baffle plate 54 will not be rotated downward during daily use.

[0033] In summary, when it is necessary to adjust the inclination angle of the stay cable frame 1 and the wind guide screen 2 to change the flow guiding angle, it is only necessary to first rotate the limiting baffle plate 54 sideways, and when it is rotated sideways, the end of the telescopic clamping bead 552 will be squeezed into the spring groove 551, so that the limiting baffle plate 54 and the T-shaped plug 52 are smoothly separated, and in the absence of the blocking of the limiting baffle plate 54, the T-shaped plug 52 can be pulled out, and the base cylinder 3 and the top sleeve 51 can be slid up and down on the surface of the tower cylinder 6, and the inclination angle of the stay cable frame 1 and the wind guide screen 2 can be changed, and when it is adjusted to the appropriate height, the T-shaped plug 52 can be inserted back, and the T-shaped plug 52 can be inserted into other plug grooves 53, thereby achieving limiting of the top sleeve 51, and at this time, the limiting baffle plate 54 is rotated back, so that the top end of the limiting baffle plate 54 is located on one side of the T-shaped plug 52, and the end of the telescopic clamping bead 552 is clamped into the circular clamping hole 553 under the pushing of the spring in the spring groove 551, thereby achieving limiting of the limiting baffle plate 54 and ensuring the stability of the top sleeve 51 and the base cylinder 3, and then the stay cable frame 1 is rotated, so that the bottom support plate 11 can be attached to the ground and fixed, thereby adjusting the inclination angle of the stay cable frame 1 and the wind guide screen 2.

[0034] Embodiment 3

[0035] Please refer to Figures 1 to 6 For the third embodiment of the present application, which is based on the previous embodiment, the difference is that the effective tensioning of the retractable rope 12 can be achieved by the tensioning mechanism 13, thereby ensuring the stable operation of the retractable rope 12.

[0036] Specifically, one side of the tower drum 6 is further provided with a tensioning mechanism 13, the tensioning mechanism 13 comprises a support sleeve 131 fixed on the side of the tower drum 6, and the end of the support sleeve 131 movably installs an active support column 132, the end of the active support column 132 rotatably installs a tensioning wheel 133 which is in close contact with the winding and unwinding rope 12, so as to tension the winding and unwinding rope 12, the other end of the active support column 132 slides in the inside of the support sleeve 131, so that the active support column 132 can be adjusted by sliding left and right, and the support sleeve 131 is further provided with a limiting assembly 134, the limiting assembly 134 comprises a nut seat 1341, a limiting bolt 1342 and a limiting groove 1343, the top of the support sleeve 131 is fixed with the nut seat 1341, and the top surface of the active support column 132 is uniformly provided with a plurality of limiting grooves 1343 corresponding to the nut seat 1341, the limiting bolt 1342 penetrates the nut seat 1341, and the bottom end of the limiting bolt 1342 is inserted into one of the limiting grooves 1343, so as to stably limit the active support column 132.

[0037] In conclusion, after the inclination angle of the cable-stayed cable frame 1 and the wind guide screen 2 is changed, the tightness of the winding and unwinding rope 12 will change, at this time, the limiting bolt 1342 can be rotated upwards, so that the bottom end of the limiting bolt 1342 moves out of the limiting groove 1343, that is, the active support column 132 can be transversely moved, so that the tensioning wheel 133 is transversely moved, and the winding and unwinding rope 12 is tensioned through the tensioning wheel 133, when the tensioning degree is appropriate, the limiting bolt 1342 is rotated downwards again, so that the bottom end of the limiting bolt 1342 can enter other limiting grooves 1343, that is, the fixing of the active support column 132 can be completed, and the tensioning wheel 133 can effectively and stably tension the winding and unwinding rope 12.

[0038] The model of the winding and unwinding motor 8 in the application is ZDF3-25H20-100S.

[0039] Although the embodiments of the present application have been shown and described in detail (as described above in detail), it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A wind turbine guide device, comprising a cable-stayed frame (1) installed between a tower (6) and the ground, and a wind guide screen (2) installed on the cable-stayed frame (1), a support block (4) is installed on the left side of the tower (6), the top end of the cable-stayed frame (1) is rotatably connected with the support block (4), a bottom support plate (11) is rotatably installed at the bottom end of the cable-stayed frame (1), the bottom end of the wind guide screen (2) is fixed to the bottom end of the cable-stayed frame (1), a connecting sliding sleeve (7) is slidably sleeved on the surface of the cable-stayed frame (1), and the top end of the wind guide screen (2) is connected with the connecting sliding sleeve (7), characterized in that: The surface of the tower drum (6) is sleeved with a base drum (3), and a support block (4) is welded on the left side of the base drum (3), and an adjusting mechanism (5) is arranged between the base drum (3) and the tower drum (6); ​ The adjusting mechanism (5) comprises a top sleeve (51), a T-shaped plug block (52) and a plug groove (53), the top sleeve (51) is fixed on the top of the base drum (3) and is also sleeved on the surface of the tower drum (6), a plurality of plug grooves (53) corresponding to the T-shaped plug block (52) are uniformly arranged on the two side surfaces of the tower drum (6), and the two sides of the top sleeve (51) are penetrated by the T-shaped plug block (52), and the inner end of the T-shaped plug block (52) is inserted into one of the plug grooves (53).

2. A flow guiding device for a wind turbine according to claim 1, characterized in that: The two side surfaces of the base drum (3) are rotationally installed with limit baffle plates (54), and the top end of the limit baffle plate (54) is attached to the outer end of the T-shaped plug block (52).

3. A wind turbine flow guiding device according to claim 2, wherein: The limit baffle plate (54) and the T-shaped plug block (52) are further provided with a clamping assembly (55), and the clamping assembly (55) comprises a spring groove (551) formed in the T-shaped plug block (52), a telescopic clamping bead (552) is connected in the spring groove (551) through a spring, a circular clamping hole (553) corresponding to the telescopic clamping bead (552) is formed in the surface of the limit baffle plate (54), and the end of the telescopic clamping bead (552) is clamped into the circular clamping hole (553).

4. A wind turbine flow guiding device according to claim 1, characterised in that: It also comprises a winding and unwinding mechanism connected with the connecting sliding sleeve (7), the winding and unwinding mechanism comprises a winding and unwinding motor (8), a first pulley (9), a second pulley (10) and a winding and unwinding rope (12), the winding and unwinding motor (8) is arranged on the ground, the first pulley (9) is installed at the bottom of the support block (4), the second pulley (10) is installed on the inner side of the bottom end of the cable frame (1), and the winding and unwinding rope (12) is wound around the winding and unwinding motor (8), the first pulley (9) and the second pulley (10) and connected with the connecting sliding sleeve (7).

5. A wind turbine flow guiding device according to claim 4, wherein: The side of the tower drum (6) is further provided with a tensioning mechanism (13), the tensioning mechanism (13) comprises a support sleeve (131) fixed on the side of the tower drum (6), and the end of the support sleeve (131) is movably installed with a movable support column (132), and the end of the movable support column (132) is rotationally installed with a tensioning wheel (133) attached to the winding and unwinding rope (12).

6. A wind turbine flow guiding device according to claim 5, wherein: The other end of the movable support column (132) is slidably located in the inside of the support sleeve (131), and the support sleeve (131) is further provided with a limiting assembly (134).

7. A wind turbine flow guiding device according to claim 6, wherein: The limiting assembly (134) comprises a nut seat (1341), a limiting bolt (1342) and a limiting groove (1343), the top of the support sleeve (131) is fixed with the nut seat (1341), and the top surface of the movable support column (132) is uniformly provided with a plurality of limiting grooves (1343) corresponding to the nut seat (1341), the limiting bolt (1342) penetrates the nut seat (1341), and the bottom end of the limiting bolt (1342) is inserted into one of the limiting grooves (1343).

8. A control method for the flow guiding device of a wind turbine according to any one of claims 1 to 7, characterized in that: The control method comprises: Collecting the power generation of the wind turbine generator set; The generated power is compared with the rated power of the wind turbine generator set, and the deployment degree of the wind deflector (2) is controlled according to the comparison result. If the generated power does not reach the rated power, the wind deflector (2) is deployed. If the generated power reaches the rated power, the wind deflector (2) is retracted.

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