In operation, the line of generator assemblies will be bent in a downstream direction under the action of the prevailing currents and thus deviate from the strictly vertical arrangement shown in FIGS. In general, the deep currents in deep oceans have their highest flowrates some distance from the bed of the ocean, such that there is a zone with low or little to no flow of water adjacent the bed. 18, the generator assemblies 802 are arranged with their axes parallel and substantially horizontal. 23. In this alternative arrangement, the generator assemblies 1006 are arranged in a linear pattern extending laterally from the central collector and converter 1004 substantially perpendicular to the prevailing current, indicated by arrows D. The generator assemblies 1006 are connected by the subsea cables 1008 in a series manner to the central collector and converter 1004. Again, this arrangement ensures that each generator assembly in the array is unaffected by the downstream turbulence generated by another generator assembly during normal operation.
Dolor De Muelas
Alternatively, the electrical power may be transmitted to a user remote from the location of the system, typically by means of one or more cables. The use of a tubular assembly, such as a riser, for the retaining means also provides a path for the cables, hydraulic or other lines and connections that are required to bring power from the generator assembly to the end user location.
Such a subsea wellhead or associated assembly may be one that is in operation, in which case, the system of the present invention may be used to provide power to the assembly or equipment or assembly. An ocean current power generator is proposed in U.S. The generator assembly 602 comprises two impellor assemblies 620, each having a vertical shaft 622 extending between the upper and lower housing ends 606 and 608. The ends of the shafts are supported in suitable bearings within the upper and lower housing ends (not shown for clarity). Levantarse cansado y con dolor muscular . Alternatively, the generator assemblies may be arranged in groups or banks, the assemblies within each group or bank being in fixed orientation with respect to each other, but the group or bank being able to rotate with respect to the fixture assembly.
Dolor Espalda Alta Causas
In one preferred arrangement, the generator assembly comprises two impellors disposed adjacent one another such that the volume of water swept by the two impellors overlaps. In one preferred arrangement, the plurality of impellors are arranged to interact, that is have the blades of the impellors arranged such that the volume of water swept by the blades of adjacent impellors overlapping, whereby in operation a volume of water is swept by blades from two adjacent impellors. Further details of this preferred embodiment of a turbine assembly are provided hereinbelow. The turbine unit may be rotated to allow the inlet to be faced into or upstream in the prevailing current. With the blades in this position, water impinging on the impellor assembly flows into the cavities defined between the upstream blades and impacts the central hub of the impellor. The generator assembly 10 is connected at its lower end to the swivel joint 30. The generator assembly 10 comprises a pair of impellor assemblies with vertical blades rotating about vertical axes.
Most preferably, the volumes swept by the blades of the adjacent impellors overlap, as described hereinbefore. Thus, the rear housing member 712 comprises extensive vane surfaces 750 and 752 extending from a wide portion of the rear housing member 712 adjacent the impellor assembly 720 to a narrow ridge 754. The inner surface 756 of the rear housing member 712 is arcuate and has a radius of curvature substantially the same as the path followed by the outer edges of the blades, with a suitable tolerance, such that the inner surface 756 is swept by the outer edges of the blades, when in use. A two dimensional array of generator assemblies comprises a pattern of generators extending upwards from the fixture assembly and either laterally across the flow of the prevailing current or up- or downstream of the fixture assembly.
If the retaining means for securing the generator assembly to the bed of the body of water is flexible, allowing the generator assembly to move laterally and/or vertically with respect to the point of anchorage to the bed, the system should also comprise means to locate and hold the generator assembly at the requisite position and depth between the bed of the body of water and the surface. In particular, embodiments of the present invention have been developed to be located and operate in significant depths of water. By having generator assemblies extending in a vertical pattern from the fixture assembly, the flow of water at various depths in the ocean may be used to generate energy. At the lower depths adjacent the ocean floor, the flowrate is insufficient to harness a useful amount of energy in an efficient manner.
Many currents flow at significant velocities and can maintain a high flowrate for extended periods of time. The system of the present invention may be used to generate energy from any body of water that has suitable currents flowing therein. The number and arrangement of the plurality of locating assemblies will be determined by the flow pattern of the prevailing current or currents. Dolor de espalda y brazos cansados . Details of the generator assembly and its operation are set out hereinafter. Suitable means for securing the generator assembly directly to the bed of the body of water will be readily apparent to the person skilled in the art. In this way, the system of the present invention is not limited in the number and/or size of the generator assemblies, such as is the case with systems in which the generator assemblies are supported from a barge or vessel floating on the surface of the body of water or are located in shallow water.
In particular, the or each generator assembly may be provided with a housing that is of a buoyant construction and/or comprises one or more buoyant components or compartments. In addition, the generator assembly 10 is free to rotate and bend with respect to the retaining assembly 12. In particular, the swivel joint 30 allows the generator assembly 10 to rotate freely under the action of the prevailing currents, so as to remain properly aligned with the current flow. The retaining means may be arranged to provide a rigid connection between the generator assembly and the fixture assembly on the bed of the ocean. 18 arranged for use in the installation of FIG. Referring to FIG. 2, there is shown a front elevation of a second embodiment of a subsea installation of the present invention, generally indicated as 102. The installation is shown in side elevation in FIG.
Dolor Muscular Post Covid
Referring to FIG. 1, there is shown a subsea installation, generally indicated as 2. The installation 2 is for the production of oil and gas and is shown on the ocean floor 4 above a subterranean well extending below the ocean floor, as indicated by a conductor 6 of conventional configuration used to line the well. However, this can also be used to advantage in the case where the retaining means comprises one or more rigid members, such as tubulars or risers.
Electrical energy generated may be used by components of the wellhead assembly, distributed to other local installations, by a cable 34 for transmission over a longer distance. 16, contains a drive assembly 770 connecting the end of the shaft 722 to a plurality of generators 772. The drive assembly 770 comprises suitable gears and linkages to transfer the drive from the shaft 722 to the input of the generators 772. The generators may be electrical generators for providing electrical energy, hydraulic pumps for producing a stream of pressurised hydraulic fluid, or a combination of the two. Each locating assembly 404 a, 404 b comprises an anchor assembly 406 a, 406 b secured to the ocean floor. Tratamiento para el dolor de columna lumbar . In operation, the locating assemblies 404 a and 404 b act to keep the installation 402 in a fixed position relative to the ocean floor and serve to resist the action of the current impinging on the installation.
- Equipment according to claim 1, wherein, described transducer is mechanical transducer
- Aplicar los reforzadores contingentemente
- Una dieta pobre en nutrientes esenciales, especialmente hierro, ácido fólico y vitamina B12
- Ejercicios para pacientes con lumbalgia
- Copos de avena
- Pérdidas agudas (repentinas)
The inner hub 726 is generally cylindrical and contains a buoyant material 730, such as a foam or other cellular material. The housing 804 of the generator assembly contains a buoyant material 832, such as a foam or other cellular material. The front housing member 610 is shown in cross-section in FIG. Similarly, the upper end of the tubular assembly 210 is connected to the lower end of the generator assembly 206, again as shown in FIG. As noted above, an assembly of tubulars connected end to end of substantially length may be regarded as a flexible retaining means. However, as also noted above, specific embodiments of generator assemblies are of particular advantage in deep ocean locations. However, it will be appreciated that this depth may vary considerably. It is indicated that horizontal axis turbines, similar to wind turbines, have been built and tested in underwater location, although no details of such assemblies are given.