Hydro-generator driven by sea current

FIELD: engines and pumps.

SUBSTANCE: invention relates to designs of plants designed to convert water current energy into electric power. Proposed hydro-generator driven by sea current comprises hydrodynamic drive 2 and electric birotary generator 1 made up of housing 3, outer and inner rotors 4 and 5. Inner rotor 5 is arranged inside said housing 2. Hydrodynamic drive 2 represents blades 9 radially fitted on outer surface of outer rotor 4 and is mounted in casing 19 furnished with inlet and outlet branch popes. Housing 3 and casing 19 represents cylindrical structures. Outer rotor 4 seats outside housing 3. Rotors 4 and 5 are coupled via reduction gear 12 comprising driven gear 13 in mesh with outer rotor 4, idle gears 14 and drive gear 16 in mesh with inner rotor 5 to ensure counter rotation of rotors 4 and 5.

EFFECT: higher efficiency, reduced sizes and increased power output.

2 cl, 2 dwg

 

The invention relates to structures for converting the energy of the incoming flow of water into electrical energy.

Energy production, which is a necessary tool for the existence and development of mankind, has an impact on nature and human environment. On the one hand, in the life and productive activity of man so firmly joined heat and electricity that people even can not imagine their existence without it and consume for granted inexhaustible resources. On the other hand, people more and more attention focuses on the economic aspect of energy and requires clean-energy industries. This suggests the need to solve complex issues, including the reallocation of funds to cover the needs of humanity, the practical use in the national economy achievements, search and development of new alternative technologies for heat and power, etc.

Known hydropower plant at the request of the Russian Federation for invention №93029865 containing the two screws rotating in different directions, connected by shafts respectively with the rotor and stator of the generator. While the stator of the generator is rotated.

This is a big drawback, since the stator must be placed in a stationary CDF is truncated, designed for fastening to the support and output wires. In addition, the rotor, the stator and the screws rotate with the same angular velocity. If you design a high-speed generator having a rotational speed, for example, 3000...10000 rpm, to design a propeller with a diameter of more than 1 m will fail for reasons of strength, due to the large centrifugal loads.

For example, when n=10000 Rev/min and D=1 m/s,

the speed of rotation of the rotor at the periphery is equal to 532 m/s, i.e. almost 2 times the speed of sound in air and is comparable to the speed of propagation of sound in water and invalid under the terms of strength. For industrial generators for maximum power, you must have the screws with a diameter of 5...10 m and more.

Known hydrogenerator working at sea for the patent FR 1137394 And 28.04.1957, F02B 13/10, prototype, which contains the electric and hydrodynamic drive, made in the form of radially positioned on the external surface of the outer rotor blades, generator made birotational containing casing, the outer and inner rotor.

Disadvantage: low power generator.

The task of the invention to increase the efficiency with the reduction of its size and increase in power.

This object is achieved due to the fact that hydrogen is the operator, working at sea for containing the hydraulic actuator and the electric generator made birotational and including a housing, inner and outer rotors, the latter of which is located inside the housing, and a hydrodynamic drive made in the form of radially positioned on the external surface of the outer rotor blades and placed in the casing, having inlet and outlet nozzles, according to the invention the casing and the casing is cylindrical, the outer rotor is located outside the housing and the rotors are interconnected via a gearbox, comprising a driven gear that engages with the outer rotor, an intermediate gear and pinion gear that engages with the inner rotor, and providing opposite rotation the rotors.

The hydro generator can be equipped with a pressure compensator in communication with the sealed cavity of the generator filled with lubricating fluid.

The invention is illustrated by figure 1 and 2, where:

figure 1 shows a diagram of an alternative source of energy;

figure 2 shows the section a-a in figure 1.

The hydrogenerator (figure 1) contains the generator 1 and made integral with him hydrodynamic drive 2, running on the energy of water, and is, in turn, of the cylindrical body 3, the outer rotor 4 and the inner rotor 5, are installed according to the public inside and outside the cylindrical body 3 concentric with him. The generator 1 includes a field winding 6, is made within the cylindrical body 3, and the outer magnets 7 and the inner magnet 8 mounted respectively in the outer and inner rotors 4 and 5.

Hydrodynamic drive 2 (figure 1) consists of a rectangular blades 9 mounted on the outer surface of the outer rotor 4 along its axis.

The rotors 4 and 5 are installed on the housing 3 on the bearings 10 and is sealed with a seal 11. Cavity "B" and "C" of the generator 1 is filled with lubricating fluid.

The inner rotor 5 is connected to the outer rotor 4 through the gear 12, which contains the driven gear 13 that engages with the outer rotor 4, the intermediate gear 14, mounted on the shaft 15 and the pinion gear 16 that is connected with the inner rotor 5. The cavity of the gear 12 filled with lubricating fluid.

The application of this scheme will reduce the diametrical dimensions of the generator 1, to increase its efficiency and reduce the diameter of the installation several times. While the plant capacity can be increased at the expense of its axial size.

To the housing 3 of the generator 1 (Fig 1 and 2) ribs 17 are attached bearing 18.

The generator 1 and the hydrodynamic drive 2 are enclosed in a cylindrical casing 19, which has a suction inlet 20 and outlet 21 (Fig 3). With the cavity "B" channel "D" is connected Polo is th pressure compensator 22, within which is mounted a spring-loaded piston 23. Hole "E" reports the cavity pressure compensator 22 with the environment.

During operation of the installation it is set in the area of permanent water flow. The flow of water passes through the inlet pipe 20 and actuates the hydraulic actuator 2 (Fig 1), acting on the rectangular blades 9.

The inner rotor through the gear 12 rotates in the opposite direction. This will increase the rate of change of magnetic flux passing through the coil (winding) excitation 6 of the generator 1. The magnetic field crosses the field winding 6 and occurs EDS. Produced electrical energy is supplied by electrical wires to the energy consumers (figure 1...2 circuit output wires not shown).

The casing 19 prevents radial flow of water under the action of centrifugal forces and increases the efficiency of the installation.

The use of the invention will:

1. To ensure high efficiency through the use of birotational circuit of the generator, i.e. the rotation of the two rotors in opposite directions.

2. To get more power due to the large axial length of the device, while it passes through the maximum flow of water. More power the generator can be obtained without increasing its Diametric dimensions and znachitelnoj the increase of weight and centrifugal loads.

3. To reduce the diametrical dimensions of the generator through the use of birotational schema.

4. To simplify the design of the device as a whole by combining basic units of the electric and hydrodynamic drive and reduce the number of parts.

5. To reduce the level of noise generated by the device during operation through the use of casing.

6. To ensure the unit is mounted on the bottom of the ocean at any depth through the application of pressure compensator.

1. The hydrogenerator working at sea for containing the hydraulic actuator and the electric generator made birotational and including a housing, inner and outer rotors, the latter of which is located inside the housing, and a hydrodynamic drive made in the form of radially positioned on the external surface of the outer rotor blades and placed in the casing, having inlet and outlet nozzles, characterized in that the casing and the casing is cylindrical, the outer rotor is located outside the housing and the rotors are interconnected via a gearbox, comprising a driven gear that engages with the outer rotor, an intermediate gear and pinion gear that engages with the inner rotor, and providing the opposite rotation of the rotors.

2. The hydro generator according to claim 1, characterized in that it is equipped with compensate the om pressure, in communication with the sealed cavity of the generator filled with lubricating fluid.



 

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