• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Reinforced wind tower (1), formed by a hollow body (2), comprising in its interior at least one reinforcing structure (3) formed by a series of longitudinal reinforcement elements (4), where each of said longitudinal elements reinforcement (4) presents its two opposite ends fixed by fixing means to the inner surface of the hollow body (2) of the tower at points located in different verticals and, where each longitudinal reinforcement element (4) has at least one of its ends joined by means of joining to the end of another first reinforcement (4) consecutive thereto. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2630728A1
    申请号:ES201600131
    申请日:2016-02-18
    公开日:2017-08-23
    发明作者:Pablo UNANUA HERMOSO DE MENDOZA
    申请人:Gamesa Innovation and Technology SL；
    IPC主号:
    专利说明:

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    DESCRIPTION
    Reinforced wind tower Technical field of the invention
    The present invention corresponds to the technical field of wind towers, which are formed by a hollow body of great height that is subjected to a series of loads.
    Background of the Invention
    At present, with the increase in the production of clean, environmentally friendly energy, wind energy has been growing, generating an increase in the number of wind turbines to obtain wind energy, which are usually made up of a turbine, a High-rise tower and a generator.
    The tower can be made of reinforced concrete or metal and its construction and problems are similar to other high-rise towers, such as the towers of broadcasting or mobile telecommunications antennas or electricity poles, so although we focus on The wind towers are not limiting to them.
    The metal towers are formed from the superposition of metal rings or ferrules, welded to each other so that they are configuring sections of the tower or, through the union, usually by screwing, of metal panels that are joined both horizontally and vertically
    The tower is responsible for transmitting the gravitational loads and lateral forces of the turbine to the lower support,
    In both modes of realization, there are some inconveniences that generate complications in the construction of these towers and make the process very expensive.
    One of these drawbacks is that of the dimensional limitations of transporting the sections of the tower by road, although the tower is divided into these
    F.OEPM
    09/29/2016
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    sections that facilitate its movement, the diameter of the lower sections also often fails to comply with the permitted limits.
    The lower sections are those that support a higher level of load, so it is necessary to increase its diameter. The higher the height of the tower, the greater the size of the lower sections.
    Another drawback is that, in order to withstand the high loads to which the tower is subjected, a high thickness of the ferrules or the plates that form the sections is necessary, which implies a very high material expense.
    There are also towers that, depending on the height and the loads they must bear, are impossible to design due precisely to the transport limits.
    A solution sometimes adopted to this problem is the realization of a first section that extends from the foundation upwards, in reinforced concrete. Thus, the greater the load, the greater the height of this section is required, but as the height of this section increases, the total cost of the tower increases.
    As an example of the state of the art, reference document ES2330482 can be mentioned in which a wind turbine tower is defined, comprising several segments with a polygonal cross-section. Each segment comprises several flat plates that are connected to each other to form the polygonal cross-section, where said flat plates are connected to each other by means of splice plates.
    This tower tries to solve the problem of road transport limitations by dividing each of the segments of the tower into a series of plates that, being smaller in size, already meet these limitations.
    However, although in this way the inconvenience of restrictions on road transport can be solved, the laborious assembly required of the tower, piece by piece, as well! as the increase in the necessary assembly time, they generate a significant increase in the economic cost of production.
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    In addition, this solution does not provide more rigidity to the tower, so that at a higher height and greater loads a high thickness of the plates is still needed, which significantly raises the final price of the tower.
    Description of the invention
    The reinforced wind tower formed by a hollow body that is presented here comprises at least one reinforcement structure formed by a series of longitudinal reinforcement elements, where each of said longitudinal reinforcement elements has its two opposite ends fixed by means of fixing means to the inner surface of the hollow body of the tower at points located in different verticals and, where each longitudinal element has at least one of its ends joined by means of joining to the end of another longitudinal element consecutive therewith.
    According to a preferred embodiment, the wind tower comprises in its interior at least two vertical reinforcement structures each formed by a series of reinforcements that are longitudinally shaped and are connected to each other consecutively at their ends, and where each vertical structure of reinforcement is fixed to the inner surface of the hollow body.
    In this case and in a preferred embodiment, the vertical reinforcement structures have a variation of the thickness, which is linearly reduced from a maximum value of longitudinal thickness of the reinforcement located at the smallest height, to a minimum value of thickness of the reinforcement of longitudinal form located at the highest level.
    According to another aspect, in a preferred embodiment the fixing means of each end of the longitudinal reinforcing elements consist of a direct welding thereof on the inner surface of the hollow body.
    In another preferred embodiment, the fixing means of each end of the longitudinal elements are formed by welding or screwing each end to a fixing element, where said fixing element is attached to the inner surface of the hollow body by means of Union.
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    In a preferred embodiment, said fixing element of the ends of the longitudinal elements consists of the vertical reinforcement structures mentioned above, different for each of the ends of the same longitudinal element.
    According to a second preferred embodiment, the element for fixing the ends of the longitudinal elements is formed by a lug.
    In either of these two modes of realization and according to a preferred embodiment, the means of joining the fasteners to the inner surface of the hollow body are formed by a weld.
    According to another preferred embodiment, the means for joining the ends of the longitudinal elements to the fixing element lug are formed by welding or screwing.
    According to another aspect, in a preferred embodiment, the means for joining consecutive ends of the longitudinal elements are formed by welding them.
    According to another preferred embodiment, the means for joining consecutive ends of the longitudinal reinforcement elements are formed by screwing them.
    According to a preferred embodiment, the longitudinal elements of the reinforcement structures and the longitudinally reinforced reinforcements of the vertical structures are formed by metal profiles.
    With the reinforced wind tower proposed here, a significant improvement in the state of the art is obtained.
    This is so thanks to the existence of the interior reinforcements described, the design of high-rise towers with smaller diameters is allowed than at present, specifically less than the Ifmite value established for road transport. This reduces costs and assembly times.
    In addition, with this wind tower design, it is possible to choose the natural frequency of the tower with and without the rotor and the gondola, in a wide range. Elio allows you to choose that frequency
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    which optimizes the fatigue loads and the extreme load of the tower, since there is a direct relationship between the natural frequency of the tower and the loads generated.
    The internal structure adds high rigidity to the wind tower and absorbs much of the stress of the outer hollow body. This generates an improvement in fatigue resistance, in addition to a reduction in the stresses of the structure formed by said hollow body, thus allowing a decrease in the thickness of the plates or rings that form said hollow body or the reduction of the diameter until the limits of road transport are met.
    Also depending on the specific needs of each tower, the internal structure can be designed so that it does not interfere with the internal elements of the tower, such as an elevator, a ladder, cables, etc. or be designed in a way that gives more importance to obtaining a certain natural frequency, at a lower manufacturing cost.
    It is therefore a reinforced wind tower that solves the problems currently existing in this type of towers and does so simply and effectively.
    Brief description of the drawings
    In order to help a better understanding of the features of the invention, according to a preferred example of practical realization thereof, a series of drawings are provided as an integral part of said description where, with an illustrative and non-limiting nature, represented the following:
    Figure 1 Shows a perspective scheme of the inside of the reinforced wind tower, where the fixing element is vertical reinforcing structures.
    Figure 2.- Shows a perspective diagram of the interior of the reinforced wind tower where the fixing element is lugs.
    Detailed description of a preferred embodiment of the invention
    In view of the figures provided, it can be seen as in a first preferred embodiment of the invention, the reinforced wind tower 1 formed by a body
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    gap 2 presented herein comprises two reinforcement structures 3 each formed by a series of longitudinal reinforcement elements 4.
    As shown in Figure 1, each of these longitudinal reinforcement elements 4 has its two opposite ends fixed by means of fixing to the inner surface of the hollow body 2 of the tower 1 at points located at different verticals. In addition, each longitudinal element 4 has at least one of its ends joined by means of joining the end of another longitudinal element 4 in a row therewith.
    In this first preferred embodiment of the invention, as can be seen in Figure 1, the wind tower 1 comprises in its interior four vertical reinforcing structures 5 fixed to the inner surface of the hollow body 2. Each vertical reinforcing structure 5 is formed by a series of longitudinally reinforced reinforcements 6. These longitudinally reinforced reinforcements 6 are joined together consecutively by their ends.
    In this first preferred embodiment of the invention, the vertical reinforcing structures 5 are arranged on diametrically opposed generators two to two, the diameters at whose ends said generatrices pass, perpendicular to each other.
    Likewise, these vertical reinforcement structures 5 have a variation in thickness, which is linearly reduced from a maximum thickness value of the longitudinally reinforced reinforcement 6 located to the smallest height, to a minimum thickness value of the longitudinally reinforced reinforcement 6 located at the highest level.
    The fixing means of each end of the longitudinal reinforcement elements 4 are formed by a welding of each end to a fixing element 5, where said fixing element 5 is attached to the inner surface of the hollow body 2 by means of joining means .
    As shown in Figure 1, in this first preferred embodiment of the invention, said fixing element of the ends of the longitudinal elements 4 is formed by one of the four different vertical reinforcement structures 5 for each of the ends. of the same longitudinal reinforcement element 4.
    Likewise, the joining means of these vertical reinforcing structures 5 consist of a welding thereof to the inner surface of the hollow body 2.
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    In this first preferred embodiment of the invention, the means for joining consecutive ends of the longitudinal elements 4 are formed by welding them.
    Both the longitudinal reinforcement elements 4 and the longitudinally reinforced reinforcements of the vertical structures 6 are formed by metal profiles in this first preferred embodiment of the invention.
    A second preferred embodiment of the invention is proposed herein, which presents, like the first proposed mode, two reinforcing structures 3 formed by longitudinal reinforcing elements 4 with their ends fixed to the inner surface of the hollow body 2 and where at least one of the ends of each longitudinal element 4 is connected to the end of another longitudinal element 4 consecutive with it.
    As shown in Figure 2, in this second preferred embodiment, unlike what is proposed in the first mode, there are no vertical reinforcing structures 5 inside the wind tower 1 and the fixing means of each end of the longitudinal elements 4 are formed by an atomization of each end to a fixing element formed in this case by lugs 7 attached to the inner surface of the hollow body 2 by means of joining means.
    In this second preferred embodiment of the invention, said means for joining the lugs 7 to the inner surface of the hollow body 2 are formed by a weld.
    The longitudinal reinforcement elements 4 and the longitudinally reinforced reinforcements of the vertical structures 6, are formed by metal profiles and the joining means of the consecutive ends of the longitudinal elements are formed by a welding thereof.
    The described embodiments constitute only examples of the present invention, therefore, the specific details, terms and phrases used herein are not to be construed as limiting, but are only to be understood as a basis for the claims and as a representative base that provides
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    An understandable description as well as enough information to! Expert in the field sufficient information to apply the present invention.
    With the reinforced wind tower presented here, significant improvements are achieved with respect to the state of the art.
    Thus, a wind tower of high rigidity and an improvement in fatigue resistance is obtained, which allows a reduction in the thickness of the plates or rings that form the hollow body or a decrease in the diameter so that the limits of the road transport.
    It is therefore possible to build high-rise wind towers with a smaller diameter and smaller plate thickness, which generates a significant reduction in the cost of the same, in addition to the aforementioned advantage of complying with the legal limits of road transport .
    It is a very effective wind tower, which in a simple way manages to increase the rigidity of the same, reduce costs and allow greater heights by solving the inconvenience that this type means towers today.
    F.OEPM
    09/29/2016
    权利要求:
    Claims (1)
    [1]
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    1- Reinforced wind tower (1), formed by a hollow body (2), characterized in that it comprises a! less a reinforcement structure (3) formed by a series of longitudinal reinforcement elements (4), where each of said longitudinal reinforcement elements (4) has its two opposite ends fixed by means of fixing means to the inner surface of the body hollow (2) of the tower at points located in different verticals and, where each longitudinal reinforcing element (4) has at least one of its ends joined by means of joining a! end of another longitudinal reinforcing element (4) consecutive with it.
    2- Reinforced wind tower (1), according to claim 1, characterized in that the means for joining consecutive ends of the longitudinal reinforcement elements (4) are formed by a bolting or by welding them.
    3- Wind tower (1) reinforced according to claim 1 characterized in that the fixing means of each end of the longitudinal reinforcement elements (4) are formed by welding or screwing each end to a fixing element (5 and 7), wherein said fixing element (5 and 7) is attached to the inner surface of the hollow body (2) by means of joining.
    4- Wind tower (1) reinforced according to claim 3 characterized in that the joining means of the fixing elements (5 and 7) to the inner surface of! hollow body (2) are formed by welding.
    5- Wind tower (1) reinforced according to claim 1 characterized in that the fixing means of each end of the longitudinal reinforcement elements (4) are formed by a direct welding thereof on the inner surface of! hollow body (2).
    6- Wind tower (1) reinforced according to claim 3 characterized in that the fixing element of the ends of the longitudinal reinforcement elements (4) is formed by a different vertical reinforcement structure (5) for each of the ends of the same longitudinal reinforcing element (4).
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    7- Reinforced wind tower (1), according to claim 6, characterized in that the vertical reinforcement structures (5) are each formed by a series of longitudinally reinforced reinforcements (6) and are connected to each other consecutively by its ends.
    8- Reinforced wind tower (1), according to claim 6, characterized in that the vertical reinforcement structures (5) have a variation in thickness, which is linearly reduced from a maximum value of longitudinally reinforced reinforcement thickness (6) located at the lowest level, up to a minimum thickness value of the longitudinally reinforced reinforcement (6) located at the highest level.
    9- Reinforced wind tower (1), according to claim 3, characterized in that the fixing element of the ends of the longitudinal reinforcement elements (4) is formed by a lug (7).
    10- Reinforced wind tower (1), according to any of the preceding claims, characterized in that the longitudinal reinforcement elements (4) and the longitudinally reinforced reinforcements of the vertical structures (6) are formed by metal profiles.
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    US20120219426A1|2012-08-30|Blade for a turbine
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    同族专利:
    公开号 | 公开日
    ES2630728B1|2018-05-30|
    EP3216948A1|2017-09-13|
    US20170241152A1|2017-08-24|
    MX2017001795A|2018-08-07|
    CN107091205A|2017-08-25|
    引用文献:
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    US4395857A|1979-01-19|1983-08-02|Ted T. Sokol, Jr.|Panelized leg and scale tower|
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    US9551320B2|2012-09-27|2017-01-24|General Electric Company|Asymmetric load control for torsion fatigue reduction in a wind turbine tower|
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    ES2534261B1|2013-10-18|2016-02-19|Gamesa Innovation & Technology, S.L.|Reinforced hollow for wind turbine tower|CN112302890A|2019-07-31|2021-02-02|北京金风科创风电设备有限公司|Fixing device, tower and wind generating set|
    法律状态:
    2018-05-30| FG2A| Definitive protection|Ref document number: 2630728 Country of ref document: ES Kind code of ref document: B1 Effective date: 20180530 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201600131A|ES2630728B1|2016-02-18|2016-02-18|Reinforced wind tower|ES201600131A| ES2630728B1|2016-02-18|2016-02-18|Reinforced wind tower|
    EP17000162.2A| EP3216948A1|2016-02-18|2017-02-02|Reinforced wind tower|
    US15/423,203| US20170241152A1|2016-02-18|2017-02-02|Reinforced wind tower|
    MX2017001795A| MX2017001795A|2016-02-18|2017-02-08|Reinforced wind tower.|
    CN201710081178.7A| CN107091205A|2016-02-18|2017-02-15|Enhanced wind tower|
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