BG112125A - A method and a device for manufacturing electrical energy from sea waves via a number of floats, connected to a floating underwater platform - Google Patents

Abstract

The invention relates to the energy sector, to transformation of wave energy into electrical, without a solid connection with the bottom or the shore being established. The unit consists of a number of floats linked with the neighboring ones and with a floating underwater platform via volume pumps /for example piston ones/, with a built in elastic element. The underwater platform is a flat closed off vessel, placed horizontally on the entire surface of the group of floats. In the middle of its upper wall is located a chamber, filled with air /an air pocket/, and in the middle of its lower- an opening with a turbine, connected to a generator. The platform is relatively immovable due to decreasing waves in the deeper parts of the water, due to its mass and area, and the different phase of movement of the carrying floats. The relative movement between the floats and the platform drives the pumps, heating water in the platform, thus driving the turbine. During a storm the increased pressure in the platform decreases the volume of the air pocket and the entire system individually places itself at a greater depth while continuing to work.

Description

Method and device for obtaining electricity from sea waves by means of a float complex connected to a floating underwater platform.

Field of technology

The invention relates to energy - to convert the energy of sea waves into electricity without a solid connection to the bottom or shore. It can be used in all water basins where there are waves, regardless of the depth of the pool, the relief of the bottom, the tides and

V the distance to the shore, with the possibility for the floats to automatically dive deeper in a storm and to rise again after passing.

BACKGROUND OF THE INVENTION.

A large number of devices and methods are known for converting the energy of sea waves into electricity. They have different advantages and disadvantages, depending on the conditions in which they are used.

With practical application has found the device 'PELAMIS' - Portugal, its disadvantage is the large area that it needs in a changing direction of the waves.

Other devices are mounted on the shore or at the bottom - ie. in shallow water. A common problem is sea storms, which can damage devices.

Technical essence of the invention

It is an object of the invention to provide a method and a device for converting the energy of sea waves into electrical energy, which is compact, without a rigid connection to the bottom or shore and is protected against strong waves.

This goal is achieved through a device consisting of: ·

A) Group of floats 1 / more than three /, partially submerged in water and driven by waves.

C B) Horizontal connections 2 between adjacent floats 1 in triangles. The connections allow linear movement / shortening and lengthening /. This movement activates a volumetric pump (for example a piston), which injects water into the underwater platform 3 through a flexible pipe 4.

C) Vertical connections 5 of each of the floats 1 with the underwater .f platform. The connections allow the float 1 to move linearly up and down relative to the platform. This movement activates a positive displacement pump (for example a piston pump), which also injects water into the underwater platform 3 through a flexible water line 6. An elastic element Z is built into the pump, which returns the floats to their original position after the wave has passed.

D) Floating underwater platform 3-flat closed vessel, located horizontally at a depth to which the wave is weaker / for example 30 meters /. In the middle of its upper wall there is a chamber 8 / air pocket /, which is filled with air with the appropriate pressure. In the middle of the lower wall there is an opening through which the water pumped by the pumps flows. The pressurized water rotates the turbine 9, and it - the generator 10, located in the air pocket above it. Under the hole there is a deflector C, which disperses the water flowing after the turbine 9 · horizontally.

In case of strong excitation, the pumps work more intensively, the pressure in the underwater platform 3 increases and the volume of air in the air chamber 8 decreases. Therefore, the whole system weighs and sinks deeper, together with the floats 1, which continue to move, but less, following the movement of water particles below the water surface. This movement becomes weaker with increasing depth, at which the system is balanced at some level below the surface of the water. After the storm passes, the system returns to its original position. The platform 3 is relatively stationary due to the decreasing excitation in depth, mass and area, and the different lifting and lowering phases for each of the floats. The positioning of the platform 3 is provided by one or more anchors 12 at the bottom.

Examples of the invention.

Various embodiments of the invention are possible:

1. Instead of a piston pump with an elastic element, use a column of series-connected elastic / multilayer / bellows.

2. A spirally corrugated elastic tube can be used, which is reinforced or reinforced with a coil spring built into the folds with the same pitch and diameter.

3. The hydraulic circuit can be closed, in which case the water can be replaced with a suitable liquid (hydraulic oil or other).

Application of the invention

1. Under suitable conditions (near high shore), it can pump water to a shore reservoir to be used for energy production or otherwise.

2. Can be used to pump water from more. . deep layers.

3. The electricity generated by the device can be used to decompose water into hydrogen and oxygen by collecting the gases in gas-tight, flexible containers.

4. The underwater platform can be used for aquaculture.

5. Solar panels can be mounted on the floats.

6. Sensors for environmental parameters can be installed on the device. ·

7. A complex of such devices can reduce the erosion of shores and other marine facilities.

Claims (2)

1. Method and device for obtaining electricity from sea waves by a complex of floats connected to a floating underwater platform, characterized in that the underwater platform is relatively stationary relative to the floats on the surface due to the decreasing wave in depth, mass and area # the different phase of movement of the floats carrying it, the relative movement between the floats and the platform being used to inject the water and drive the turbine and the generator. Method according to claim 1, characterized in that when the excitation is amplified above a predetermined degree (score), the whole system is lowered independently to a greater depth, preventing damage, while continuing to operate.