The first end of the guiding cylinder 4 a is connected water tightly to the second end of the guiding cylinder 6 b of the actuating rod 6 a. In addition to the actuating mechanism 6 and one or more hydraulic PTO units 7 mentioned above the driving and PTO arrangement 5 comprises also a connecting mechanism 4 that acts as a part of the power transmission mechanism of the PTO units 7 between the actuating mechanism 6 and the hydraulic PTO units 7. The connecting mechanism 4 comprises a guiding cylinder 4 a, a connecting rod 4 b making a reciprocating motion guided by the guiding cylinder 4 a, and a casing 4 c connecting the second end of the guiding cylinder 4 a and the first end of the hydraulic cylinder block 7 a water tightly to each other.
The end plate 7 g is a strong and thick plate and forms a heavy and durable frame for the hydraulic cylinders 7 h. That kind of pressurized water can be used as working medium for various tools us such, or for instance in devices for desalination purposes. The driving and PTO arrangement 5 has been placed into the gap 2 a of the two lower halves of the panel 2 and fastened onto the base 1. The driving and PTO arrangement 5 is situated symmetrically in relation to the pivot shaft 3 a of the panel 2 in the direction of the width of the panel 2, and also in the direction of the reciprocating motion of the panel 2. In that kind of an arrangement there are one or more mutually symmetrically placed PTO units 7 at either side of the panel 2 in the direction of the reciprocating motion of the panel 2. Equally, the PTO units 7 can also be placed in many other ways.
Dolor De Estomago
By this way the PTO units 7 are mechanically separated from the actuating mechanism 6 and from both the pivot shaft 3 a and the panel 2. In addition the actuating rod 6 a of the actuating mechanism 6 has not directly been connected to the pivot shaft 3 a or to the panel 2 but the connection is implemented through the lever mechanism 8 with two successive levers 8 b and 8 c having a pivot joint between them. In this way the pistons 9 can be locked almost in their entirety inside the cylinder block 7 a, and after that the cylinder block 7 a can be easily and safely separated from the guiding cylinder 6 b.
- Large and small scale marine dynamics, astronomical tides and other environmental noise
- Trastorno somatomorfo sin especificación (F45.9)
- Sientes un dolor tolerable que es perceptible, pero no abrumador
- Hacer ejercicio físico y estiramientos
- Adaptación a las estaciones
- Evaluar anormalidades congénitas de la columna.o escoliosis
- F (flowery): floral; gran contenido de brotes
- Síndrome de activación mastocitaria
The closing and sealing parts can be short and cylindrical and their ends can be outwardly and inwardly conical or spherical to match to the pusher ends 6 e, 6 f of the actuating rod 6 a and to the first end of the connecting rod 4 b. 10. One of the two uppermost hydraulic cylinders 7 h has been partially cross-sectioned so that the piston 9, pressure pace 9 a and the hollow cylindrical space 11 between the inner surface of the cylinder 7 h and the outer surface of the first section of the pistons 9 is seen. The piston rods 9 e of the pistons 9 are fastened to the common connecting plate 9 c that is also a strong and thick plate and forms a heavy and durable frame for the piston rods 9 e that are fastened with their free end to the connecting plate 9 c with fastening means 9 f such as screws.
Commonly a PTO unit of prior art wave energy conversion devices is connected more or less permanently to the reciprocating panel of the wave conversion device as is shown for example in the international patent publication No. Dolor en la columna lumbar . One embodiment of the closing and sealing mechanism 12 is shown in FIGS. The solution shown in FIG. Yet more control flexibility is achieved when two-piston cylinders are in pairs of different sizes as is described in connection with FIG. For instance when the availability of wave energy is low only one cylinder 7 h or pair of cylinders 7 h are kept activated and the other are deactivated, and when the availability is becoming better more and more cylinders 7 h or pairs of cylinders 7 h are activated.
For instance the hydraulic cylinders of the PTO units can be used to convert the captured wave energy to pressurized seawater with a pressure between approximately 1-300 bar. Another problem with hydraulic driving and PTO arrangements according to prior art is that they require a lot of maintenance and/or repairs, and their lifetime is considerably short. When the forces of the waves are small the smaller hydraulic cylinder is in use and when the forces of the waves are greater the bigger cylinder can be used. One significant advantage is that there is no need to stop the reciprocating motion of the panel when the PTO unit is removed from the energy recovery arrangement for maintenance or repair purposes, or installed back after the maintenance or repairs. Using for instance pairs (p2) and (p3) gives the same result as using (p1) and (p2) because all the pairs are equal. Each coupling element 8 a is coupled in the gap 2 a to a corresponding circular toothed coupling element 2 b that has been fastened onto the inner end surface of each half of the panel 2 so that the coupling element 2 b makes a reciprocating rotary motion along with the panel 2 about the pivot shaft 3 a that is inserted through the central hole of the toothed coupling elements 2 b and 8 a.