Storm-Protection Mechanism

Float Lift – In EWP’s unique mechanism, the hydro-cylinder may fulfill a double function: of a delivery pump and hydraulic lift cylinder. In order for a floater and its pier fastenings to remain undamaged during frequent storms of the average level, the mechanism of operative float flooding and its emersion to the on-position is provided.

When there is a harsh storm and increasing threat of pump unit destruction, the hydro-cylinder, carrying out the basic function of the delivery pump, is switched by the hydraulic distribution valve to the mode of hydraulic lift cylinder and lifts the floater upwards, to the pier or breakwater, or any other structure.

Float Submersion – Flooding and emersion of the floater occur in the following sequence. First, a sensor adjusted to a certain height of the wave orders the cylinder to open the flood valve. At that, water arrives at the floater and air departs. The floater gradually loses buoyancy and gravitates to the bottom. When waves become lower, the flood valve is closed at the operator’s command from the automation system, and compressed air moves from the accumulator through a back valve. Water pours out from the floater through the back valve, back to the sea, the floater comes to the surface, and the pump unit starts to work. At that, seawater does not arrive through back valves to the floater.

Float Debarkation Ashore – In countries where the sea is rough for most parts of the year and the shore is high and not always equipped with piers, breakwaters and other structures, EWP’s advanced wave power station can be adjusted for mobility. Such mobile installation allows for the movement of floaters ashore– even from an underwater position. For this purpose, it is necessary to bring the floater into working condition, and then to feed working liquid under pressure from the accumulator to the hydraulic lift cylinder.

The floater is connected with a luffing jib by means of a fixed roller. To translocate the floater on shore, it is necessary to loosen the roller and roll the floater to the opposite end of the luffing jib by means of the roller.

The whole lever system is based on the support platform, which is installed on the upper plane of the shore (pier, breakwater or any other structure). The platform allows placement of rather powerful fastenings to the shore; as well as favorably resists the effects of waves and does not require heavy spending for construction.