Liftable wind power tower drum and floating fan

Abstract

The utility model provides a liftable wind power tower drum and a floating fan, and relates to the technical field of wind power equipment. Internal threads are arranged on the inner wall of the lower tower barrel, and a gear ring is arranged at the upper end of the lower tower barrel; the lower end of the middle tower drum is inserted into the lower tower drum, the upper end of the middle tower drum is connected with the upper tower drum, external threads are arranged on the outer wall of the middle tower drum, the external threads are in threaded connection with the internal threads, the outer wall of the middle tower drum is sleeved with the supporting ring in a vertically sliding mode, the lower end of the supporting ring is fixedly connected with the inner ring of the supporting bearing, and the outer ring of the supporting bearing is sleeved with the gear ring. A driving part is arranged on the supporting ring and comprises a motor and a gear, the motor is used for driving the gear to roll along the gear ring so as to drive the middle tower drum to rotate, the middle tower drum and the lower tower drum are in threaded transmission, the middle tower drum spirally ascends and descends, and therefore the upper tower drum is driven to ascend and descend. The wind power tower drum has the advantages that the height of the wind power tower drum can be automatically adjusted, the stability of a wind power generator set under the extreme weather condition is enhanced, and therefore the wind resistance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power equipment technical field especially relates to a liftable wind power tower drum and floating type fan. BACKGROUND

[0002] With the continuous development of offshore wind power technology, floating wind turbine generators become an important development direction of offshore wind power because they can be deployed in deep water areas. However, floating wind turbine generators face great stability challenges in actual application, especially in extreme weather conditions such as typhoons. Influenced by factors such as sea waves, wind power and tides, the center of gravity of the floating wind turbine generator will change, thereby affecting the stability of the equipment, especially in bad weather, which may cause the fan to tilt or lose stability, and even structural damage. The existing technical means mainly focuses on improving stability through optimizing platform design and anchoring system, but these methods are still insufficient in dealing with extreme weather such as strong storms, and lack an effective technical means to adjust the center of gravity or height of the wind turbine generator. SUMMARY

[0003] Therefore, in order to solve the problem of adjusting the center of gravity of the floating fan in strong storms and other extreme weather, the embodiments of the utility model provide a liftable wind power tower drum and floating fan.

[0004] The embodiments of the utility model provide a liftable wind power tower drum, which comprises:

[0005] an upper tower drum;

[0006] a lower tower drum, the lower end of the upper tower drum being vertically slidably sleeved on the outer wall of the lower tower drum, the inner wall of the lower tower drum being provided with internal threads, and the upper end of the lower tower drum being provided with a gear ring;

[0007] a middle tower drum, the lower end of the middle tower drum being inserted into the lower tower drum and the upper end of the middle tower drum being connected to the upper tower drum, the outer wall of the middle tower drum being provided with external threads, the external threads being threadedly connected with the internal threads, and the periphery of the middle tower drum being provided with a support ring and a support bearing, the support ring being vertically slidably sleeved on the outer wall of the middle tower drum, the lower end of the support ring being fixedly connected to the inner ring of the support bearing, the inner ring of the support bearing being not in contact with the outer wall of the middle tower drum, the gear ring being sleeved on the outer ring of the support bearing, at least one driving member being arranged on the support ring, the driving member comprising a motor and a gear connected with the motor, the gear being engaged with the gear ring, the motor being used to drive the gear to roll along the gear ring, thereby driving the middle tower drum to rotate, the middle tower drum being threadedly driven with the lower tower drum, so that the middle tower drum is spirally lifted and lowered, thereby driving the upper tower drum to be lifted and lowered.

[0008] Further, the outer wall of the middle tower barrel is provided with a first clamping groove arranged vertically, and the inner wall of the supporting ring is provided with a first clamping strip, which is vertically and slidably arranged in the first clamping groove.

[0009] Further, the number of the first clamping groove and the first clamping strip is multiple, and each first clamping groove is arranged at intervals along the circumference of the middle tower barrel, and each first clamping strip is vertically and slidably arranged in a first clamping groove.

[0010] Further, the upper end of the lower tower barrel is provided with a brake disc, and the supporting ring is provided with a brake for locking the brake disc.

[0011] Further, the upper end of the lower tower barrel is provided with an annular supporting platform, the brake disc is mounted on the supporting platform, the gear ring is fixedly connected with the brake disc, and the brake is mounted on the edge of the supporting ring and extends downward to the outside of the brake disc.

[0012] Further, the inner wall of the upper tower barrel is provided with a second clamping groove arranged vertically, and the outer wall of the lower tower barrel is provided with a second clamping strip, which is vertically and slidably arranged in the second clamping groove.

[0013] Further, the upper tower barrel, the lower tower barrel and the middle tower barrel are coaxially arranged.

[0014] Further, the middle tower barrel is sleeved with a self-aligning ball bearing, and the upper end of the middle tower barrel is connected with the upper tower barrel through a thrust bearing.

[0015] Further, the upper end of the lower tower barrel is provided with an encoder for monitoring the rotation angle of the middle tower barrel.

[0016] In addition, the embodiment of the utility model further provides a floating type fan, including the liftable wind power tower barrel, and still include floating platform, cabin and blade, the lower tower barrel lower end is installed on the floating platform, the cabin is installed on the upper tower barrel upper end, the blade is installed on the cabin front end.

[0017] The technical scheme provided by the embodiment of the utility model has the beneficial effects that:

[0018] 1. The utility model discloses a liftable wind power tower and floating type wind turbine, the middle tower and the lower tower are connected through the thread in the wind power tower, drive the middle tower screw lifting through motor drive gear and gear ring transmission, thereby drive the vertical lifting of the upper tower, adjust the gravity center position of the wind turbine generator of floating type wind turbine, when encountering typhoon and other bad weather conditions, can automatically adjust the height of wind power tower, thereby realize the drop of wind power tower, enhance the stability of wind turbine generator under the extreme weather condition, thereby improve its wind resistance in typhoon and other bad environment, reduce the damage risk caused by structural instability, can significantly improve the overall stability of floating type wind turbine, enhance its wind resistance in natural disasters and effectively reduce the operation and maintenance cost.

[0019] 2. The utility model discloses a liftable wind power tower and floating type wind turbine, the middle tower and the lower tower are connected through the thread in the wind power tower, can control the rotation angle and the speed of motor, accurately control the accurate lifting of wind power tower, ensure the accuracy and safety in the lifting process to accurately adjust the gravity center position of wind turbine generator, improve its stability under different climatic conditions. DRAWINGS

[0020] Figure 1 It is the perspective view of a liftable wind power tower of the utility model,

[0021] Figure 2 It is the sectional view of a liftable wind power tower of the utility model,

[0022] Figure 3 It is the explosion drawing of the lower part of a liftable wind power tower of the utility model,

[0023] Figure 4 It is the perspective view of the lower part of a liftable wind power tower of the utility model,

[0024] Figure 5 It is the sectional view of the lower part of a liftable wind power tower of the utility model,

[0025] Figure 6 It is Figure 5 The local enlarged view of A in the middle,

[0026] Figure 7 It is the schematic diagram of the lower tower,

[0027] Figure 8 It is the schematic diagram of the support ring,

[0028] Figure 9 It is the sectional view of the upper part of a liftable wind power tower of the utility model,

[0029] Figure 10 It is the schematic diagram of a floating type wind turbine of the utility model.

[0030] Fig. 100, liftable wind power tower drum; 1, upper tower drum; 2, lower tower drum; 3, middle tower drum; 4, support ring; 5, motor; 6, gear; 7, gear ring; 8, support bearing; 9, first clamping strip; 10, external thread; 11, internal thread; 12, support bearing inner ring; 13, support bearing outer ring; 14, brake disc; 15, brake; 16, support platform; 17, second clamping strip; 18, encoder; 19, aligning ball bearing; 20, thrust bearing; 21, first clamping groove; 200, cabin; 300, blade. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will combine the drawings to make the further description to the utility model embodiment. The following introduces one of the more optimal ones in multiple possible embodiments of the utility model, and is intended to provide the basic understanding of the utility model, but is not intended to confirm the key or decisive elements of the utility model or limit the range to be protected.

[0032] In all the examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not as a limitation. Thus, other examples of example embodiments can have different values.

[0033] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the specification.

[0034] It should be noted that like reference numerals and letters refer to like items in the several views of the drawings, and as such, definitions of those items in one view are deemed applicable to other views thereof, to the extent possible unless explicitly stated otherwise. It also should be understood that the drawings are not necessarily drawn to scale.

[0035] It should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting" should be interpreted broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, or electrically connected, can be directly connected, or indirectly connected through an intermediate medium, or can be connected inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] Please refer to Figure 1 and 2 The embodiment of the utility model provides a liftable wind power tower drum 100, mainly including upper tower drum 1, lower tower drum 2 and middle tower drum 3.

[0037] Combined with Figures 3-8As shown, the upper tower drum 1, the lower tower drum 2 and the middle tower drum 3 are all hollow cylinders. The upper tower drum 1, the lower tower drum 2 and the middle tower drum 3 are generally coaxially arranged. The lower end of the upper tower drum 1 is vertically and slidably sleeved on the outer wall of the lower tower drum 2. Here, the inner wall of the lower end of the upper tower drum 1 is provided with a vertically arranged second clamping groove, and the outer wall of the lower tower drum 2 is provided with a second clamping strip 17 which is vertically and slidably arranged in the second clamping groove. The lower end of the lower tower drum 2 is generally fixedly arranged, so that the lower end of the upper tower drum 1 can be vertically and slidably arranged through the cooperation of the second clamping strip 17 and the second clamping groove.

[0038] In some embodiments, the number of the second clamping strips 17 and the second clamping grooves can be multiple. The second clamping strips 17 are uniformly and spacedly arranged around the outer wall of the lower tower drum 2. Each second clamping groove is matched with a second clamping strip 17, so that each second clamping strip 17 is embedded in a second clamping groove and can be vertically and slidably arranged along the second clamping groove, so that the upper tower drum 1 can be stably vertically and slidably arranged.

[0039] The inner wall of the lower tower drum 2 is provided with an inner thread 11, and the upper end of the lower tower drum 2 is provided with a gear ring 7. Specifically, the upper end of the lower tower drum 2 is provided with an annular support platform 16, and the gear ring 7 is fixedly arranged on the support platform 16. The gear ring 7 is coaxially arranged with the lower tower drum 2.

[0040] The lower end of the middle tower drum 3 is inserted into the lower tower drum 2, and the upper end is connected to the upper tower drum 1. The outer wall of the middle tower drum 3 is provided with an outer thread 10 which is threadedly connected with the inner thread 11. Specifically, the middle tower drum 3 is vertically arranged inside the upper tower drum 1. The outer thread 10 at the lower end of the middle tower drum 3 is screwed with the inner thread 11 at the inner wall of the lower tower drum 2.

[0041] And the periphery of the middle tower drum 3 is provided with a support ring 4 and a support bearing 8. The support ring 4 is vertically and slidably sleeved on the outer wall of the middle tower drum 3. The lower end of the support ring 4 is fixedly connected with the outer inner ring 12 of the support bearing. The outer inner ring 12 of the support bearing is not in contact with the outer wall of the middle tower drum 3. The gear ring 7 is sleeved on the outer ring 13 of the support bearing.

[0042] Wherein, the support ring 4 is a circular ring, the support bearing 8 can be selected as a yaw bearing, the outer wall of the middle tower drum 3 is provided with a vertically arranged first clamping groove 21, the inner wall of the support ring 4 is provided with a first clamping strip 9 which is vertically and slidably arranged in the first clamping groove 21. The support ring 4 is connected with the lower tower drum 2 through the first clamping strip 9, so that the lower tower drum 2 can be vertically and slidably arranged along the first clamping strip 9. The rotation of the support ring 4 can drive the first clamping strip 9 to drive the lower tower drum 2 to rotate.

[0043] In some embodiments, the number of the first clamping grooves 21 and the first clamping strips 9 are both set to multiple, and each of the first clamping grooves 21 is arranged at an interval around the circumference of the middle tower drum 3, preferably uniformly. Each of the first clamping strips 9 is vertically slidably arranged in a first clamping groove 21, so that multiple first clamping strips 9 cooperate with multiple first clamping grooves 21, on the one hand to ensure the stable vertical sliding of the lower tower drum 2, and on the other hand to ensure that the rotation of the support ring 4 can drive the lower tower drum 2 to rotate stably through multiple first clamping strips 9.

[0044] The support ring 4 is provided with at least one driving member, and each driving member comprises a motor 5 and a gear 6 connected with the motor 5, and the gear 6 is engaged with the gear ring 7. Specifically, the motor 5 is fixedly installed on the support ring 4, the output shaft of the motor 5 vertically downward penetrates the support ring 4 and connects the gear 6, and the motor 5 can drive the gear 6 to rotate. Since the gear ring 7 is fixed on the upper end of the lower tower drum 2 and cannot rotate, the gear 6 is forced to roll along the gear ring 7 to drive the support ring 4 to rotate, and the support ring 4 drives the middle tower drum 3 to rotate through the first clamping strip 9. The middle tower drum 3 and the lower tower drum 2 are in threaded transmission, so that the middle tower drum 3 is lifted spirally, thereby driving the upper tower drum 1 to lift.

[0045] It should be noted that the number of driving members can be flexibly set to multiple according to actual application scenarios, such as six in the embodiment. Each of the driving members is uniformly and circumferentially arranged around the middle tower drum 3, and the gear 6 of each of the driving members is uniformly and circumferentially arranged around the periphery of the gear ring 7 and simultaneously engaged with the gear ring 7, so that multiple driving members can more stably drive the middle tower drum 3 to lift spirally.

[0046] As shown in FIG. 1, Figure 9 In some embodiments, the middle tower drum 3 is provided with a self-aligning ball bearing 19, which is installed at a radial position of the middle tower drum 3. The self-aligning ball bearing 19 automatically adjusts the shaft center to compensate for the possible deviation or misalignment of the middle tower drum 3 during lifting,

[0047] to ensure that the middle tower drum 3 is always in the ideal working position during lifting, thereby improving the accuracy and stability of the lifting process of the middle tower drum 3.

[0048] And the upper end of the middle tower barrel 3 is connected with the upper tower barrel 1 through a thrust bearing 20. An inner wall of the upper end of the upper tower barrel 1 is provided with a bearing mounting groove, an inner ring of the thrust bearing 20 is embedded in the mounting groove, and an outer ring of the thrust bearing 20 is connected with the upper end of the middle tower barrel 3. Thus, the thrust bearing 20 is mounted in the axial direction of the middle tower barrel 3, bears axial load generated in the lifting process of the middle tower barrel 3, prevents axial displacement of the middle tower barrel 3, ensures that the upper tower barrel 1 always keeps stable in the lifting process, and avoids instability caused by uneven load.

[0049] In some embodiments, the upper end of the lower tower barrel 2 is provided with a brake disc 14, and the support ring 4 is provided with a brake 15 for locking the brake disc 14. The brake disc 14 is mounted on the support platform 16, the gear ring 7 is fixedly connected with the brake disc 14, and the brake 15 is mounted on the edge of the support ring 4 and extends downward to the outside of the brake disc 14. After the lifting of the fan tower barrel is completed, the brake 15 locks the brake disc 14, locks the support ring 4 so that it cannot rotate, effectively brakes the middle tower barrel 3, prevents unnecessary rotation of the tower barrel in severe weather conditions, and thus improves the safety of the equipment.

[0050] In some embodiments, the upper end of the lower tower barrel 2 is provided with an encoder 18 for monitoring the rotation angle of the middle tower barrel 3. The encoder 18 is fixedly mounted on the support platform 16 and is aligned with the gear ring 7, and the rotation angle of the middle tower barrel 3 is monitored by monitoring the rotation angle of the gear ring 7. The encoder 18 cooperates with the motor 5 to monitor the lifting state of the middle tower barrel 3 in real time. The lifting speed and position of the middle tower barrel 3 can be accurately controlled through the feedback signal of the encoder 18, the accuracy and safety in the lifting process are ensured, and system instability caused by unstable lifting speed is avoided.

[0051] In addition, as Figure 10 shown, the embodiment of the utility model also provides a floating type fan, including the above-mentioned liftable wind power tower barrel 100, and still include floating platform (not shown in the drawing), cabin 200 and blade 300, the lower end of the lower tower barrel 2 is installed on the floating platform, the cabin 200 is installed on the upper end of the upper tower barrel 1, and the blade 300 is installed on the front end of the cabin 200.

[0052] The floating type fan works by floating on the sea surface through the floating platform. In severe environments such as typhoon, the middle tower barrel 3 is driven to spiral descend by controlling the motor 5, to drive the upper tower barrel 1 to vertically descend, so that the height of the cabin 200 and the blade 300 is reduced, the center of gravity of the floating type fan is reduced, the stability of the floating type fan in extreme weather conditions is enhanced, and the wind resistance of the floating type fan in severe environments is improved.

[0053] In this article, the front, back, up, down and other orientation words are defined by the position of the parts in the drawing and the position of the parts relative to each other in the drawing, just to express the technical scheme clearly and conveniently. It should be understood that they are relative concepts, which can be changed accordingly according to different ways of use and placement, and the use of the orientation words should not limit the scope of the application.

[0054] In the case of no conflict, the above-mentioned embodiments and features in the embodiments can be combined with each other. The above-mentioned is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A liftable wind turbine tower, characterized in that, include: Upper tower; The lower tower cylinder has its lower end slidably fitted onto the outer wall of the lower tower cylinder. The inner wall of the lower tower cylinder is provided with internal threads, and the upper end of the lower tower cylinder is provided with a toothed ring. The system includes a middle tower, the lower end of which is inserted into the lower tower and the upper end of which is connected to the upper tower. The outer wall of the middle tower has an external thread that is threadedly connected to the internal thread. The middle tower is surrounded by a support ring and a support bearing. The support ring is vertically slidably fitted onto the outer wall of the middle tower. The lower end of the support ring is fixedly connected to the inner ring of the support bearing. The inner ring of the support bearing does not contact the outer wall of the middle tower. A gear ring is fitted onto the outer ring of the support bearing. The support ring has at least one driving component, which includes a motor and a gear connected to the motor. The gear meshes with the gear ring. The motor drives the gear to roll along the gear ring, thereby rotating the middle tower. The middle tower and the lower tower are threadedly driven, causing the middle tower to spirally rise and fall, thereby driving the upper tower to rise and fall.

2. The liftable wind turbine tower as described in claim 1, characterized in that: The outer wall of the middle tower is provided with a vertically arranged first slot, and the inner wall of the support ring is provided with a first locking strip, which is vertically slidably arranged in the first slot.

3. A liftable wind turbine tower as described in claim 2, characterized in that: The number of the first card slot and the first card strip is set to multiple. Each first card slot is arranged circumferentially around the middle tower cylinder, and each first card strip is vertically slidable in a first card slot.

4. A liftable wind turbine tower as described in claim 1, characterized in that: The upper end of the lower tower is provided with a brake disc, and the support ring is provided with a brake for locking the brake disc.

5. A liftable wind turbine tower as described in claim 4, characterized in that: The upper end of the lower tower is provided with an annular support platform, the brake disc is installed on the support platform, the gear ring is fixedly connected to the brake disc, and the brake is installed on the edge of the support ring and extends downward to the outside of the brake disc.

6. A liftable wind turbine tower as described in claim 1, characterized in that: The inner wall of the upper tower is provided with a vertically arranged second slot, and the outer wall of the lower tower is provided with a second slot strip, which is vertically slidable within the second slot strip.

7. A liftable wind turbine tower as described in claim 1, characterized in that: The upper tower, the lower tower, and the middle tower are arranged coaxially.

8. A liftable wind turbine tower as described in claim 1, characterized in that: The middle tower is fitted with a self-aligning ball bearing, and the upper end of the middle tower is connected to the upper tower via a thrust bearing.

9. A liftable wind turbine tower as described in claim 1, characterized in that: An encoder is installed at the upper end of the lower tower to monitor the rotation angle of the middle tower.

10. A floating fan, characterized in that: The invention includes a liftable wind turbine tower as described in any one of claims 1-9, and further includes a floating platform, a nacelle, and blades. The lower end of the lower tower is mounted on the floating platform, the nacelle is mounted on the upper end of the upper tower, and the blades are mounted on the front end of the nacelle.

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