RU152322U1 - WAVE POWER PLANT WITH A HYDRAULIC SYSTEM OF CYCLIC ACTION - Google Patents

Abstract

A wave power plant of a cylindrical shape, consisting of a body with an anchoring system and a buoy connected to the body by a rod and moving inside the frame, which is part of the body, characterized in that it contains a hydraulic system inside the body using the principle of operation of a double-acting pump, which ensures regular and continuous supply of working fluid to the turbine; and a power unit using the principle of converting mechanical energy into electrical energy.

Description

Wave power plant with hydraulic system

cyclic action

The utility model relates to the field of energy using renewable energy sources, namely, offshore floating power plants and deals with the issue of providing electricity to hard-to-reach settlements and newly created production complexes on the Arctic and Far Eastern coasts.

Known marine floating power plant (patent RU No. 2388933 / C2 from 09.06.2008 "Inertial-piston wave power plant") is a prototype.

However, to use the well-known inertial-piston wave power plant with a pneumatic system, taking into account the climatic conditions of the Arctic regions, as well as to guarantee regular and continuous supply of electricity to consumers, does not seem expedient and economically justified, since a pneumatic drive plant has significant disadvantages compared to a hydraulic system:

- the possibility of explosive rupture of pneumatic drive pipelines, in connection with which they use small pressures of the working gas (up to 1 MPa), and, as a result, the efforts on the working bodies are much smaller;

- to control the amount of rotation of the actuator stem, the need for expensive devices - positioners;

- heating and cooling of the working gas in the process of compression and expansion leads to the possibility of freezing of pneumatic systems and condensation of water vapor from the working gas, so it becomes necessary to drain it;

- a relatively short life due to wear of the suspension springs of the inertial block.

The proposed utility model will allow:

• significantly increase the efficiency of the installation, due to:

- the possibility of obtaining large forces and powers with small dimensions and weight of the transmission mechanism;

- self-lubrication of rubbing surfaces when using mineral and synthetic oils as working fluids;

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- reduce the cost of electricity due to the simplified layout of the main components of the hydraulic drive;

• increase the service life due to:

- simpler design;

- ease of management and automation;

- reliability of operation.

The objective of the proposed utility model is to convert the energy of sea waves into electricity to provide it with inaccessible settlements and production complexes of the Arctic and Far Eastern coasts.

For this, a cylindrical-shaped floating structure is provided, consisting of a body with an anchor retention system and a buoy connected to the body by a rod and moving inside the frame, which is part of the body and contains a hydraulic system with a hydraulic drive and an energy block.

The essence of the proposed utility model is illustrated by the drawings, where Fig. 1 schematically shows a general view of the proposed wave power plant with a buoy (cut along the DP) in the upper position (on the crest of the wave); figure 2 is a General view of the proposed wave power plant with a buoy (cut along the DP) in the lower position (in the saddle of the wave); FIG. 3 is a view A of FIG. 1; FIG. 4 is a view BB of FIG. 2, FIG. 5 is a view BB-4 of FIG.

The design of the wave power plant (Fig. 1) consists of a housing 1, mounted on dead anchors 2 via cables 3, and a buoy 4 connected to the housing by a rod 5 and moving inside the frame 6, which is part of the housing.

Inside the housing are a hydraulic system and a power unit.

A hydraulic system that uses the principle of the double-acting pump, which ensures regular and uninterrupted supply of the working fluid 7 to the turbine 8, consists of a cylinder 9 and check valves: when the buoy is raised to the wave crest, 24.25 valves work; during the descent of the buoy into the saddle - 10.26.

The wave installation also includes a piston 11, a low pressure tank 12, a suction upper - 13 and lower - 27, pressure 14 and drain 15 pipelines and a turbine aggregated with a generator 16.

A power unit using the principle of converting mechanical energy into electrical energy consists of a generator 16, a converter 17, a voltage regulator 18, a battery pack 19, and a power cable 20.

The proposed wave power plant with a two-phase cycle is constantly as follows.

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When the buoy is raised to the crest of the wave 21, the rod 5 with the piston 11 moves upward in the cylinder 9. In this case, the working fluid 7 flows from the low pressure tank 12 through the suction pipe 27 through the open check valve 24 (the check valve 10 is closed) to the cylinder 9 under the piston 11. Under pressure, the liquid through the open check valve 25 (the check valve 26 is closed) is pumped into the pressure head pipeline 14. Next, the flow of the working fluid spins the turbine aggregated by the generator 16 and returns to the low pressure tank 12 through the drain pipe 15. The electric current generated by the generator after the transducer 17 and stabilization voltage torus 18, accumulates in the batteries and is transmitted to the shore via a power cable.

When the buoy descends into the saddle of wave 22 (Fig. 2), the rod 5 with the piston 11 moves downward in the cylinder 9, and the working fluid 7 flows from the low pressure tank 12 through the suction pipe 13 through the open check valve 10 (the check valve 24 is closed) to a cylinder 9 above the piston 11. Under pressure with liquid through an open check valve 26 (check valve 25 is closed) is pumped into the pressure pipe 14.

Further, the process is repeated as when raising a buoy on the crest of a wave.

The electricity received from the wave installation, through the block of compensating batteries 19, is supplied to the coastal substation using an underwater power cable 23 buried at the bottom.

The proposed utility model of a wave power plant provides an uninterrupted supply of electricity to consumers located on the Arctic and Far Eastern coasts during the navigation period. The use of an autonomous hydroelectric system in the proposed wave power installation for converting wave energy into electrical energy is an important advantage compared to existing similar installations, taking into account the guaranteed supply of electricity to consumers, which compares favorably with the prototype.

Claims (1)

A cylindrical wave power plant consisting of a body with an anchor holding system and a buoy connected to the body by a rod and moving inside the frame, which is part of the body, characterized in that it contains a hydraulic system using the principle of the double-acting pump, which ensures regular and continuous the supply of working fluid to the turbine, and an energy unit that uses the principle of converting mechanical energy into electrical energy.

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