The holding device comprises at least one portion arranged in front of first tips of the first blades. According to an embodiment of the present invention, 30 the turbine engine comprises an anti-debris device comprising parallel bars and/or rods connected to at least one vertical member and at least partially surrounding the first and second turbine stacks. A general feature of water turbines is the presence of a total lift force perpendicular to the rotation axis of the turbine and to the upstream flow direction. According to an embodiment of the present invention, at least one vertical member symmetrical with respect to said plane extends upstream of the first and second turbine stacks with respect to the liquid flow direction and forms a stem. 19 and 20. Further, although the present invention has been described for twin turbine engines comprising two cross flow turbines, with separate parallel axes and rotating in 5 opposite directions, it should be clear that the present invention also applies to a turbine engine comprising an even number of turbines with separate parallel axes held by a single holding device, half of the turbines rotating in one direction and the other half of the turbines rotating in the opposite 10 direction.
Fisioterapia Querétaro Calendarios
I is a perspective view of a conventional embodiment of a turbine unit; Fig. Fig. 2 is a simplified perspective view of an embodi ment of twin turbine engines according to the present invention 20 used to form twin towers. To ascertain that the turbine columns rotate in oppo site directions, and preferably at the same rotation speed, a possibility is to provide a mechanical system, for example, with 25 gears, connecting the rotation shaft of turbine column 53A to the rotation shaft of turbine column 53B so that the angular positions of the rotation shafts of turbine columns 53A, 53B are permanently connected to each other.
21 of twin turbine engines 128 in which lateral vertical members 110A, 110B, 122A, 25 122B are replaced with vertical members 130A, 130B which substantially have the shape of lateral vertical members 90A, 90B of turbine engine 88 shown in Fig. More specifically, the present invention applies to cross-flow turbines in which each turbine comprises blades 10 rotating a shaft under the action of lift forces. Symmetrical turbine engine pair 10 comprises two cross-flow turbine units 12A, 12B. Each turbine unit 12A, 12B comprises a rotation shaft 14A, 14B of axis DA, DB and driving means 16A, 16B capable of rotating shaft 14A, 14B. Driving means 16A, 16B are schematically shown as cylinders in 25 Fig. In Fig. 9, flexible coupling system 59 is arranged between plates 46 and 48. Dolor muscular en el codo . 30 For hydrodynamic reasons, it may be advantageous to be able to decrease the interval between hubs 3 of two adjacent turbine units 12A, 12B of a same turbine column 53A, 53B. Fig.
Dolor Sordo En El Pecho
11 of twin turbine engines 88 comprising, in addition to stem 72 and tail vane 80, 30 two lateral vertical members 90A, 90B attached to plates 46, 48. Lateral vertical members 90A, 90B are arranged symmetrically with respect to plane P1 and provide a confinement of the flow at the level of each turbine unit 12A, 12B along with stem 72 and tail vane 80. The flow is confined all the way to turbine 35 units 12A, 12B. Beyond each turbine unit 12A, 12B, the flow 19 engages into a diverging portion obtained by the increasing distance of lateral vertical members 90A, 90B from plane P1 all the way to their trailing edge 91A, 91B. As an example, for each turbine unit 12A, 12B, the tips of foils 5 are in front of one 5 of ring-shaped portions 145A, 145B, 146A, 146B. In this example, for each turbine unit 12A, 12B, the converging portion upstream of turbine unit 12A, 12B partially masks a given area of turbine unit 12A, 12B close to lateral vertical member 90A, 90B from the incident flow.
Tipos De Dolor Oms
It especially enables to ease the orientation of twin turbine engines 70 in the flow direction, as will be described 5 hereafter. Various alterations and modifications will occur to those skilled in the art. Brief Description of the Drawings Preferred embodiments of the invention will be described hereinafter, by way of examples only, with reference to the accompanying drawings, in which: Fig. The turbine engine further comprises a device for holding the first and second turbine stacks, comprising a single vertical member symmetrical with respect to said plane or vertical members, each of said vertical members being symmetrical with respect to said plane and/or said vertical members being arranged symmetrically with respect to said plane, the holding device further comprising first and second plates symmetrical with respect to said plane, at least partly perpendicular to said plane, and arranged between the first and third turbines and between the second and fourth turbines, the first and second rotation shafts being pivotally connected to the first plate and the third and fourth rotation shafts being pivotally connected to the second plate.
4 to 6 are perspective views of other embodiments of a pair of turbine engines according to the 5 present invention; Figs. The axial flow downstream of twin turbine engines 99 is 15 regulated, which especially provides a less agitated junction of the internal and external flows downstream of trailing edges 91A, 91B of lateral vertical members 90A, 90B. Finally, in the area of vertical members 90A, 90B close to the axial flow where, in the absence of slot 100, blades 5 transmit to shaft 2 of 20 turbine unit 12A, 12B a torque which is either slightly driving or resistive, the presence of slot 100 introduces an additional flow affecting the internal boundary layer which develops on the lateral vertical members and which may locally generate a drive torque and contribute to the improvement of the general 25 efficiency of turbine unit 12A, 12B. When the sea or river site crossed by a current is very large, several twin towers may be assembled to form a flotilla.
11 Symmetrical turbine engine pair 10 comprises a device 20 for holding turbine units 12A and 12B. Holding device 20 is formed two vertical members 22, 24 substantially parallel to axes DA and DB. The assembly formed by a symmetrical turbine unit pair and the device for holding the turbine units of the turbine unit pair is called a symmetrical turbine engine pair, or twin turbine engines, the holding device being itself symmetrical with respect to plane Pl. As an example, for each turbine unit 12A, 12B, the tips 20 of foils 5 are in front of plates 46, 48 formed of full plates as shown in Fig.
Dolores Musculares Piernas
TURBINE ENGINE WITH TRANSVERSE-FLOW HYDRAULIC TURBINES HAVING REDUCED TOTAL LIFT FORCE Field of the invention The present invention relates to a water turbine engine and in particular to a water turbine engine f or the recovery and the conversion of kinetic energy of sea or river currents, especially to provide electricity. Conversely to what can be observed with a rotating cylinder having a very even surface, the total lift observed on a conventional turbine tends to vary around an average value.
The third turbine comprises third blades connected to the third rotation shaft. Dolor hombro dormir de lado . On such a wire ring, it is also possible to graft winglets at the 5 sole tips of blades 5, such winglets thus forming local enlargements of the initial wire ring. 18, lateral vertical members 90A, 90B of twin turbine engines 99 are each crossed by slots 100 to enable cross-flows between the flows external to vertical members 90A, 90B and the incident internal flows which rotate each turbine unit 12A, 12B. Such cross-flows originate from the external 35 flows and join the internal flows. 22 and are arranged so that the width cleared by vertical members 130A, 130B gradually increases, downstream of turbine unit 12A, 12B, to form a kind of divergent section. 11 of twin turbine 25 engines 116 comprising, in addition to stem 72 and tail vane 80, an upstream anti-debris device 106A, 106B and a downstream anti debris device 118A, 118B for each turbine unit 12A, 12B. Each upstream anti-debris device 106A, 106B comprises parallel rods 108 extending upstream of a turbine unit 12A, 12B, an end of 30 each rod being attached to stem 72 and its opposite end being attached to a vertical member 110A, 110B, vertical members 110A, 110B being attached to plates 46, 48. Rods 108 have a curved shape to ease the tilting and sliding of debris to improve the debris removal.
2 of an embodiment of a pair of turbine engines comprising a stem, a tail vane, and lateral vertical members; Figs. 2 of an embodiment of a pair of turbine engines comprising a stem and a tail vane; Fig. 7 and 8 are top views of other examples of turbine engine pairs; Figs. 24 may be provided at the level of the twin towers shown in Figs. 1. For twin towers 55, foils 5 of a turbine unit 12A, 12B are angularly offset with respect to the foils of an adjacent turbine unit of the same turbine column 53A, 53B along the stacking direction, for example, by a 400 angle.
Dolor De Oidos
More specifically, 10 element 32 enables to reject the first normal vibration mode of holding device 20. Crema dolor lumbar . It further enables to avoid for parasitic flows caused by one of the turbine units to disturb the operation of the other turbine unit. However, turbine unit 12A may rotate counterclockwise and turbine unit 12B may rotate clockwise.
- La carne roja
- Sedentarismo o pérdida de interés por la actividad física
- Exceso de proteína en la orina
- Acumulación de gases
7 and 8, during the rotation, turbine units 12A, 12B remain substantially symmetrical to each other with respect to plane P1. A shaft portion 208 of axis E 23 projects upwards from platform 202 and a shaft portion 210 of axis E’ projects downwards from platform 204. Shaft portion 210 may be assembled to freely rotate at the level of a lower container, not shown, fixed with respect to the ground. Electric generator 220A is driven by turbine column 53A and electric generator 220B is driven by turbine column 53B. Each electric generator 220A, 220B comprises a speed variation system capable of modifying the ratio between the rotation speed of the shaft of the associated turbine column and the rotation 25 speed of the input shaft of the associated electric generator according to the flow which reaches the turbine column.