WO2009050547A2 – Conversion System Of Off-shore Wind Energy And Assembly Method – Google Patents

The connection between the structure (12) and the elements in traction (14) is performed by hydraulic jacks with mechanical ratchet (13) whose purpose is to monitor and adjust the tension. In detail, the first step involves assembling the subsystem made up of: platform (12) and base (16) with the relative connection of the traction means (14) through hydraulic jacks (13) in such a manner to complete the anchoring subsystem (9). In such step, the traction means (14) are completely re- wound in their respective seats, hence allowing the operation to be performed at a zone of the worksite in proximity to the coast. The main machine for producing electrical energy is a permanent magnet generator (6), of about 4 ÷ 5 m in diameter (about half the diameter of the submerged body), which is driven by a hydraulic motor (21). Said motor, as better outlined hereinafter, is supplied by a power transmission made up of an oil hydraulic circuit (22) under pressure, the pumps of such circuit being controlled by the rotor shaft (23) arranged in the nacelle of the system and coupled to the rotor itself.

  • En esta posición, levanta las caderas al máximo para liberar la tensión de la espalda
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  • Una zanahoria
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Manejo del dolor postoperatorio en trauma - Dra. María.. 13 coupled to which are the screws for connecting to the hub and provided with carbon fibres arranged longitudinally (59). As observable from the sequence of drawings in figure 6, wound on the spindle of the support structure (60) are the first layers of glass or carbon fibre and resin (61 ), then the said ring insert with threaded holes (58) is arranged and lastly, the second layers of glass or carbon fibres and resin (62). In this manner, both the longitudinal and tangential arrangement of the fibres allows obtaining a combined resistant action both in axial and longitudinal direction, also in radial direction, ensuring the tightness of the blade root, insert, hub group.

Dolores Musculares En Los Brazos

14 hypothetical impending danger and intervenes by activating the procedure for blocking the entire system. Referring to the abovementioned figures, the wind energy conversion system (1) comprises a rotor group with horizontal axis (2) provided with two blades (3), accommodated inside a nacelle (4), a submerged body (5) accommodated inside which is the permanent magnet generator (6), at least one transformer (7) and at least one rectifier (8), a subsystem (9) for anchoring the entire system to the sea floor, a subsystem (10) for transmitting power from the aerial rotor group to the generator located below the sea level and a subsystem (1 1) for transmitting the electrical power from the submerged body to the dry land. The assembly of the two bushings of each end is then mounted between the hub and the T-shaped head of the shaft with further axial preload (X) with the aim of balancing the axial load generated by the inherent weight of the rotor in rotation.

Additionally, given that the T-shaped head is separated from the body of the shaft, it is advantageous to fix the relative distance of the double bushings in such a manner that the radial load generated by the mechanical torque of the rotor is low enough, this also to the advantage of the reliability of these elastic joints. As a matter of fact, the later not being located, height-wise, at the level of the rotor group, it is possible to avoid using expensive crane vessels both during the installation and maintenance step. 12 axially (X) on the bench, prior to installation, in such a manner to always guarantee the state of compression of the elastomer under the action of radial loads Y generated by the mechanical torque of the rotor. The advantages of such applications, alongside the wide availability of space, consist in the ideal and more constant wind conditions and in the substantial absence of noise pollution and visual impact.

Furthermore, the application of these fixed installation technologies requires, the availability of enough windy areas with shallow waters, while in most of the seas worldwide, around the coasts, the sea floor deepens rapidly thus it is not possible to install such systems far off the coast and avoid the visual and noise impacts. In the second system, the subsystem thus defined is transported towards a dock at such a depth to allow the installation and the engagement of the relative wind energy system (1 ). Occurring in the third step is the final transport towards the identified final site, while occurring in the final step is the unloading of the base (16) up to the sea floor by means of the relative hydraulic jacks (13), which in turn release the traction means (14). The subsystem for transmitting electrical energy (11) consists in an electrical cable (18) which, starting from the electrical panels, extends along an electrical cable support (19) until it reaches, guided by special electrical cable blocks (20), in the undersea cable which continues up to the dry land, where it will end up in a substation for transforming and distributing towards the high and medium voltage line or up to a substation on a platform with a blocked hydrostatic pressure located in the site from which a high voltage undersea cable transports energy to the dry land, up to point of connection.

In order to guarantee the safety and safeguard the entire installed system in case of harsh external conditions such as for example the occurrence of a strong turbulence or in case of very high waves, provided for is the use of a protection system aimed at monitoring the environmental and atmospheric conditions of the geographical are where the site in question is located and the conditions of the site itself. Advantageously, it is possible to organise the transport of the entire wind energy system towards the site according to a “self- installing” procedure.

Furthermore, the heat discharge corresponding to power drops of the electrical components, especially the rectifier and main transformer, is facilitated by the fact that the body is submerged in the sea water with an almost constant low temperature even during summer. In order to increase and optimise the use of wind energy converters for generating electrical energy, conceived have been the so-called offshore wind plants, located in the sea environment, wherein the number of applications is growing steadily. DESCRIPTION An object of the present finding is a system for converting offshore wind energy in water deep at least fifty meters, provided with an electrical energy generator and auxiliaries located in a body submerged below the water level and stabilised through blocked hydrostatic pressure. These and other advantages shall be clear from the detailed description of the invention specifically referring to drawings 1/7 to 7/7 represented in which is an absolutely non-limiting preferred embodiment of the present finding.

80 m above the sea level to the generator located about 10 m below the sea level; v. Dolor de espalda parte derecha . In particular: ii. a permanent magnet generator with at least one transformer at least one rectifier, as well as further auxiliary components; iii. Referring to figure 3, the body (5), having a shape similar to the one of a bottle, is almost entirely submerged below the sea level, except for the neck. According to another embodiment, the anchoring subsystem comprises a single counterweight (16′) provided with at least one cavity, also transportable to the site by floating and ballastable on site. Such monitoring system provides for the use of a model for analysing the conditions of the geographical area where the site is located according to the relative data from the existing weather stations and at least two detection stations installed “ad hoc” in proximity to the site for the reliability of the forecast of possible unwanted phenomena.

The current offshore wind energy plants technologies are characterised in that they transpose the known fixed installation concepts known for installation on the dry land to the sea environment, fixing the wind energy converter tower always in a fixed manner on the or into the sea floor. Furthermore, this architecture allows, a safe installation process given that the system has allow centre of gravity with respect to the centre of thrust, due to the position of the components and the supplementary use of ballast which is easy to use and remove in deep sea. This is obtained by creating an “engine room” structure therein, with ail the components, as well as a ballast compartment, arranged in the lower part of the body, in such a manner to lower its centre of gravity to the maximum and increase its stability during transport and installation. J and and characterised in that said conversion system is stabilised by means of a blocked hydrostatic pressure and in that said electrical energy generator, transformer, rectifier and said auxiliary components (that is the generation ϊi subsystem) are located in a body submerged below the water level, contributing in this configuration to reducing the centre of gravity, thus optimising both the construction for operation purposes, and the transport as well as the installation of the system in deep water and hence reducing the cost of the energy produced.

Conversion system of off-shore wind energy suitable for deep water. • Fig. 4 represents the diagram of the nacelle of the system under normal conditions (Fig. An object of the finding subject of the present invention is that of defining a wind energy conversion system located in a sea environment but which is not affected by the abovementioned difficulties and can be used in deep water reducing environmental impact to the minimum. As mentioned, the machines and the electrical apparatus are located in the lower portion of the wide submerged body. The anchoring subsystem comprises a six-legged structure (12) anchored to the sea floor by means of elements (14), such as chains, ropes or tubular bars tractioned by the hydrostatic pressure. Such blocks are arranged inside a steel template (15), surrounded both internally and externally by stones (17). Dolor de rodilla y pantorrilla . It should be observed that due to their “cup” shape, the concrete blocks can be drawn to the site by means of floating, thus facilitating their transport in loco.

5 compresas térmicas para aliviar los dolores musculares.. Lastly, shown in figure 6 is the detail of the joint between the blade and the hub. The blades (3) – two – are made up of a support structure made of glass fibre and/or carbon fibre and a shell still made of glass fibre and/or carbon fibre. • Fig. 2 represents the plan view of the anchoring system, according to two different embodiments (Fig.

Furthermore, arranged between the two bushings of each end is a metal ring (55) serving to limit the radial deformation of the bushings protecting the elastomer layer in case of excessive radial loads. Referring to Figure 2, the anchoring of the elements in traction (14) to the sea floor is performed by a plurality of blocks made of reinforced concrete (16) filled with ballast material. Having wind energy plants too close to the coast implies risks related to environmental impact. • Fig. 6 shows an insert of the root of the blade. • Fig. 5 shows in view (Fig.