In this arrangement, a cable 300 passes over a shaft 290 of a hydroplane (18, 180 182, 280-282). The respective ends of the cable 302, 303 are connected to hydraulic actuators 305, 306 which include pistons 308, 309. The hydraulic actuators 305, 306 are controlled by control means (not shown) so that extension of one piston 308 is accompanied by retraction of the other piston 309 and vice versa. S In this arrangement, a pump means 450 is driven from the linkage means 420. In the embodiment specifically illustrated in Fig 13, the pump means 450 is driven from first arm 441 via a link arm 446 which moves in fixed relation to first arm 441. Link arm 446 drives rod 447 of pump means 450 which operates in a conventional manner. In addition, means for adjusting the hydroplane so that power can be extracted from both ebb and flow tides are provided and further described below.
Most preferably the apparatus of the invention further comprises means for rotating the hydroplane with respect to the linkage means from a first orientation in which the hydroplane is operable with a current flow in one direction to a second orientation in which the hydroplane is operable with a current flow substantially opposite to said one direction. 259. The power available from the arrangements 258 can be converted to more useful forms by various means. 258 to the generating facility. The downward movement of the hydroplane 18 is decelerated and the hydroplane 18 is then accelerated in an upward direction along movement path B. so that the cycle of movement is repeated and so that the hydroplane oscillates or reciprocates along the linear movement path B. :; :e. Figure 9 shows an arrangement similar to that of Figure 8, except that the cable 320 is driven by a rotatable means 321 such as a shaft or drive wheel which may, for example, be connected to a suitable motor.
Tipos De Dolor Lumbar
For example, a hydraulic motor could be coupled to an electrical generator or an electrical generator could be driven directly. Means are provided for converting the oscillating motion of the body into useful energy, such as electricity. Preferably means (not specifically illustrated) are provided whereby the assembly comprising the linkage 20 and the hydroplane 18 can be moved (e.g. Expressed differently, the axis about which the hydroplane rotates is normal to the plane of the paper in Figures 1, 2 and 3. A suitable mechanism (not specifically illustrated in Figures 1, 2 and 3) is provided for effecting the rotation of the hydroplane 18 about said axis, the mechanism being controlled by control means which determines the extent and timing of the rotation.
Although the above-described apparatus are effective, there is scope for improvement. The term hydroplane, as used herein and as known in the art, refers to a body which is so shaped that, when there is relative movement between the body and the water surrounding the body (i.e. According to a first aspect of the invention there is provided apparatus for extracting power from moving water comprising: a hydroplane; a base for mounting the apparatus in a submerged location on the bed of a body of water; a hydroplane support structure on which the hydroplane is mounted; linkage means by means of which the support structure is connected to the base, said linkage means permitting the hydroplane to move along a substantially linear movement path above said base; means operative to adjust the angular orientation of the hydroplane between: a first angular position in which the action of the current on the hydroplane is effective to generate thrust in one direction thereby operatively to move the hydroplane along said movement path in a first direction; and a second angular position in which the action of the current on the hydroplane is effective to generate thrust in another direction thereby r d d C c’ t’ operatively to move the hydroplane along said movement path in a second direction substantially opposite to said first direction, said means operative to adjust the angular orientation of the hydroplane being operative to move the hydroplane from said first angular position to said second angular position at a selected location on said movement path when said hydroplane is moving is said first direction and to move the hydroplane from said second angular position to said first angular position at a selected location on said movement path when said hydroplane is moving in said second direction, thereby causing the hydroplane to execute a controlled oscillation; and means for extracting power from the oscillatory movement of the hydroplane.
- Paso 1- Limpie y seque bien el área a tratar
- En lo próxima serie repite este movimiento con la otra pierna
- A second pair of first and second rotary actuators, wherein for said
- Seguro de asistencia al viajero
- Coils de platino sin recubrimiento
Apparatus for extracting power from moving water is already known from, for example, WO 99/45268 in which a body is described as having hydroplanes or like structures extending therefrom. Thus, for example, a linkage means may be disposed at either end of a hydroplane or group of hydroplanes, or a plurality of linkages may be used to support a plurality of hydroplanes when arranged side-by-side In further preferred embodiments said means operative to adjust the angular orientation of the hydroplane is operable to adjust the hydroplane from a selected one of a range of first angular positions to a selected one of a range of second angular positions. Dolor abdominal y de espalda . Figure 5 is a perspective view of an apparatus according to the invention including a plurality of hydroplanes; Figure his a side view of the apparatus of Figure 5; s Figure 7 is a view of a part of an apparatus similar to that of Figures 5 and 6, showing an example of a means for adjusting the angular orientation of the hydroplanes; Figure 8 is a schematic representation of one means for adjusting the angular orientation of the hydroplanes; Figure 9 is a schematic representation of another means for adjusting the angular orientation of the hydroplanes; Figure 10 is a schematic representation of a further means for adjusting the angular orientation of the hydroplanes; Figure 11 is a schematic representation of a further means for adjusting the angular orientation of the hydroplanes; Figure 12 is a schematic representation of a further means for adjusting the angular orientation of the hydroplanes; and Figure 13 is a side view of an apparatus according to another embodiment of the invention in which respective first arms are connected by a linkage.
The apparatus comprises a linkage means 420 comprising first arms 440, 441 and second arms 260, 261. First arms 440, 441 are pivoted at their lower ends for movement about nominally horizontal axes (i.e. The hydroplane or hydroplanes would then move along a nominally horizontal movement path. Clearly, considering Figure 2, if, say, first arm 14a were allowed to adopt a near vertical position while first arm 14b was allowed to adopt a near horizontal position, the desired linear, preferably vertical movement path would not result. Other linkages which achieve synchronization of the movement of first arms 14a, 14b are also possible. The hydroplanes 180, 181 are mounted on a support structure shown schematically at 183 which in turn is pivotally mounted on an upper end 164 of second arm 160. The linkage means 20 is constructed so that the motion executed by the support structure 183 carrying the hydroplanes 180, 181, under the influence of the current A, is along a linear movement path BB which lies along line BB.