Flow-through power generator and submerged power plant on stationary platform

FIELD: power engineering.

SUBSTANCE: flow-through power generator of horizontal type comprises a stator and a rotor placed on a single axis with a turbine driven by water flow forces. The rotor is made as hollow. The inner cavity of the rotor is formed as a Laval nozzle. Turbine blades are fixed inside the cavity and are directed towards the axis of rotation, being arranged along the inner surface of the rotor following helical lines. The submerged power plant on the stationary platform comprises a group of power generators installed towards the water flow on stationary supports. Supports for installation of power generators have location beds equipped with receiving cones and are arranged at the distance that is multiple to the length of the power generator section. Power generators are installed at the different depth from the water surface.

EFFECT: development of a simple and reliable power generator and a submerged power plant with easy maintenance.

8 cl, 3 dwg

 

The invention relates to the field of electric power industry, namely, to the structures of plants to convert the energy of flowing water into electrical energy.

The growth of power demand to meet household needs and technology needs are well known. The end of XX century the preferred safe and environmentally friendly. This explains all the new attempts to offer an acceptable way of generating electricity for various areas of application.

Known Autonomous free-threaded micro hydropower plant containing ground unit that includes a power distribution device, the management system and managed ballast load, fixed vodopogruzhaemy module including a generator located below the level of water in a sealed enclosure and connected to the ground block waterproof cable placed in the diffuser for a turbine with a horizontal axis of rotation, which is connected via located in the gondola and made in the form of a multiplier gear with the shaft of the generator, tapered grille, located at the entrance of the diffuser in front of the turbine, and the generator is located in the flow direction behind the multiplier in common with him the bird, which is provided with a device for pumping water from the her bottom is her part, conical grating is made of flat elements, at least part of which is made with the possibility of rotation about the longitudinal axis and equipped for this drive (patent RF №2324068, IPC F03B 17/06, publication 2008).

The proposed solution is structurally complex, designed for remote small-scale farmers who cannot afford to connect to the public network.

Known generator operating at sea for containing a cylindrical casing with inlet and outlet nozzles that are installed parallel to each other two generator with a cylindrical body and an outer rotor mounted outside the housing, and a hydrodynamic drive, made in the form of blades radially mounted on the outer surface of the outer rotors of both generators, the generators are made birotational and has an internal rotor located inside the housing, with the inner and outer rotors are interconnected via a gearbox, the cavity of which is filled with lubricating fluid, providing the opposite rotation of the rotors and vanes flat (RF patent No. 2368799, IPC F03B 13/12, F03B 7/00, publishing, 2009).

Also known hydrogenerator working at sea for containing the hydraulic actuator and the electric generator, made irrotational and including a housing, the outer and inner 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, the housing 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 (RF patent No. 2382231, IPC F03B 3/04, F03B 13/10, F03B 17/06, publication 2010).

A known design of hydrogenerators healthy, allow you to get a higher frequency, which facilitates the transportation of electricity. However, the use of gear have led to the complexity of the design, and, as a consequence, the complexity of service and reduce its reliability. Try increasing the capacity of the machine leads to a significant increase in linear dimensions, which requires additional expenses for keeping it in one place when placed perpendicular to the flow, and the presence of a large number of air voids within the casing may create problems with the cooling of the rotor winding. All this suggests a low suitability is izvestnyh structures to generate electricity on an industrial scale.

Also known machine for power generation through movement of water that contains a lot of electricity generating units, electrically interconnected and arranged in modular construction, and electricity generating units have interchangeable with replacement without interrupting the production process machinery electricity and receive their kinetic energy from the moving water and its transformation due to the motion of the turbine in each electricity generating unit (patent RF №2368798, IPC F03B 13/10, publication 2008).

Also known a system for power generation through movement of water containing many turbines, impellers which contain therein the magnetic polymer or magnets made of rare-earth metals, surrounded by electrically conductive windings are accommodated in the housing around the impeller, and are driven by the movement of water, generating electricity, and a turbine arranged in a modular structure and are electrically connected to each other (ibid.).

The proposed design of the machine is efficient, uses energy efficient technological processes of casting parts from thermoplastics, and the use of magnetopolaron or rare earth metals reduces the weight of the machine, its susceptibility to corrosion and the total cost. Though the use of these machines to generate electricity on a large scale in the waters of the powerful currents of the oceans is impractical because of the low capacity of one block.

Known hydroelectric power plant, comprising an open switchgear, generators, synchronous horizontal bulb turbine placed in the intensive flow of water in hydroelectric introduced platform-base, a vertical rack-rails, lifting mechanism and technology platform, and these synchronous generators are combined, at least two vertical areal cell-capsule system and suspended in pairs and is movable above and/or below the water surface using a tripping mechanism to the rack-rails, the lower ends of these rack-rails mounted on the platform-base installed on the bottom of the intense water flow areal cell-capsule system synchronous generators are installed movably in the guide associated with the bottom of the anchor-rope fastenings, and above the water surface on the guides installed outdoor switchgear (RF patent No. 2342486, IPC EV 9/00, F03B 13/10, publishing, 2008)

The disadvantages of the known designs include the location of the generators perpendicular to the flow, since it is known that the rate of flow of alternating depth and closer to the surface, the bigger it is. The use of capsule generators complex construction makes them difficult installation, operation and repair shall, requires water cooling of the windings of the stator and rotor, an overheating during operation due to the presence of a large number of air voids.

The task of the invention is to provide a simple and reliable generator of the horizontal type, designed for operation in conditions of underwater plants.

Another object of the invention is to create a simple service underwater plants on a stationary platform, equipped proposed by the generators of the horizontal type, and ensuring reliable operation of such power by increasing the stability of the stationary platform.

The task in part on the flow generator is solved in that the flow generator is horizontal type and includes a stator and a rotor placed on the same axis as the turbine, driven by the forces of the water flow. The rotor is made hollow, with an internal cavity of the rotor is formed in the shape of a Laval nozzle and inside the cavity of the fixed turbine blades directed toward the axis of rotation and located on the inner surface of the rotor along helical lines.

With the objective of reducing the operating temperature of the stator winding and the rotor is isolated, for example, PTFE, reinforced tube of heat shrinkable material, the conductors filled in with glass, and the OST is vriesea voids filled with material, which the magnetic core according to its physical properties, for example, magnetopolaron, so that the stator and the rotor are monoliths, and the gap between the rotor and the stator is increased without reducing the adhesion of their magnetic fields.

To eliminate axial displacement of the rotor relative to the stator between them is placed the thrust bearing.

To increase the generated power can be increase by sections joined by means of flanges, performing a technological function during Assembly of the generator under water.

With the aim of preserving the environment, it is equipped with protective mesh under tension to prevent the ingress of living organisms in the flowing part of the generator.

The task in the part of the underwater power station decides that the underwater power plant on the stationary platform comprises a group of proposed flow generators installed to meet the water flow on stationary supports, with the supports for the installation of the generators are equipped with adoptive cones with cradles and spaced by a multiple of the length of the section of the generator, and the power generators installed at different depths from the water surface.

To improve platform stability each bearing consists of a tube, its screw part of the screw in the bottom, the bottom supports, anchors, made in the form of a rigid container with rolled back from her air, connected to each other by increasing the grip support with soil centering cones on the mating elements, and the bottom bearing-anchor connected strained metal guys with a technology platform.

Underwater power plant also includes a technology platform with a pier and on the technological and switching equipment that is connected by cables to the generators and equipment on the Bank to transfer the generated power and energy standard parameters for process and domestic use, as well as living quarters for staff and helipad.

The proposed technical solution is presented in the drawings, in which figure 1 shows an underwater power plant, a top view; figure 2 - cross section AA in figure 1; figure 3 shows the scheme of installation of the bottom and screw the supports; figure 4 - cross section B-B in figure 1; figure 5 - cross section b-b In figure 4; figure 6 - the node I in figure 5.

The proposed generator consists of three sections (see figure 4) reception room 1, mid 2 and outlet 3. The middle sections may be several. Each section contains the stator 4 with a winding and a rotor 5 with its winding. Connect sections by bolting resistant flanges 6 using the end sealed the I.

The rotor 5 is structurally integrated with the turbine, which is made hollow. In the rotor set of turbine blades 7, which converts the rectilinear motion of the flow of water into rotational motion of the rotor. To increase the impact of flow on the largest possible number of blades, they are more helical lines, and the base 8, which blades are attached to the casing of the turbine rotor have a variable height and form the internal profile of the flow channel type Laval nozzle with the confuser in the receiving section 1 and the diffuser section 3.

Free rotation of the rotor 5 in a stationary stator 4 is provided with double-row radial bearings 9, placed in the end sections 1 and 3. For unloading the bearings 9 and prevent axial displacement of the rotor relative to the stator under the pressure of the water flow in section 1 posted by thrust bearing 10. To download balls of the bearings in the stator sections 1, 3 are provided technological window (not shown), which are sealed after "stuffing" bearings.

The presence of air volume in the stator and the rotor increases the temperature of the windings to reduce which in machines operating at atmospheric conditions, is applied by air or water cooling. To avoid such air volume of the stator winding of the proposed electrogenerated the RA are reel-to-reel type 11 (figure 5) or wave rod with a thermoset or ceramic insulation, and turns of the windings 12 of the rotor - flat tire of copper, is wound on edge, isolated, for example, PTFE and, optionally, sealing heat shrink tube. The remaining voids are filled with a material which is magnetic in its physical properties, for example, magnetopolaron 13 (figure 5), while ensuring the continuity of the magnetic circuit of the stator and rotor. In this case, the stator and the rotor are monoliths, capable of functioning in conditions of dynamic water flow.

The current collector 14 (figure 4) is placed on the stator sections 1-3 and isolated, for example, glass-ceramic. In section 2 from the current collector 14 departs sealed armored cable 15, is also sealed by the glass.

To prevent damage to the environment and the ingress of foreign objects in a flow channel with turbine blades, at the end of section 1 is installed protective net 16 (4), isolated from the stator insulator 17. The grid can be enjoyed a small voltage to scare the inhabitants of the waters in which you installed the generator. Eyebolts 18 (figure 4) are designed to move the generator. For the same purpose use metal towel 19.

To create a rotational moment is relatively small force flow at low speed length is and the turbine blades (shoulder of application of force) must be significant, which leads to an increase in the overall dimensions of the electric machine. The materials of which are made of the stator 4, a rotor 5 and the vane 7, selected stainless steel, and the rotor and vanes and as light as possible, for example, as titanium alloys. Induced a slight increase of the gap δ between the stator and the rotor (6) is offset by the magnetic conductivity of salt water is greater than that of the air gap.

The generator is placed in the water flow still. For this purpose, the generator stack, at least two stationary support 20 (figure 4, 5), installed at a distance of a multiple of the length of the middle section and is equipped with a special cradle 21, which represents a hard Ferrovie design. The flanges 6 does not allow the generator to be displaced in the direction of its axis. The containers of each pair of supports are made on the level of penetration of the electric generator, for example, on 3 different levels, as shown in figure 2.

The upper part of each support 20 attached at the bottom, made in the form of guides extending up and rigidly fixed to the platform 22 (figure 2).

Technology platform for power plant, for example, 18 of the generators shown in plan in figure 1. She is a stationary frame structure of the farms provided with Windows for the trigge the a/lifting generators using, for example, crane 23 (2, 3). During the descent of the electric cable 15 removal of electricity (figure 4) guides the supports will centresouth its position on the cradle. In addition to lifting equipment (crane 23) technology platform is equipped with a berth 24 (1), and on it placed the Cabinet switching equipment 25 for receiving electricity from generators and transmission through cables laid in the pipe on the bottom (not shown), to the equipment installed on the shore, and housing 26 for staff and helipad 27. To reduce lateral wind loads on the technology platform for its fortified perimeter wind visors 28.

When significant linear dimensions of the technological platform is very important to its stability. The proposed technical solution, the stability of the platform is provided in two ways: by strengthening fixing each foot at the bottom and Byte stretching between the bottom supports-anchors and technology platform. Stretch guys-marks 29 (figure 2, 3) is rigidly fixed on the frame of the technological platform so that when lateral pressure on it from any direction a sufficient number of the guys worked on stretching, counteracting the displacement of the platform. For better securing each foot to the bottom of the support pipe has not only VI is the starting part 30 (2), which is screwed into the ground, but tapered portion 31 (figure 2, 3), which is pressed to the bottom of the bottom bearing-Akari (2, 3). Support anchor is a rigid closed container, from which it is evacuated. When diving support anchor itself will be under tremendous external pressure and is pressed to the bottom. Depending on the ratio of the pressure force on the support anchor and the force of contraction of the supporting armature 32 to the bottom of the cone 31 by screwing the supporting pipe in the bottom of the conical pair of support anchor and the support pipe can have the opposite direction of the taper. Option, shown in figure 2, refers to the case where the soil is dense and the preload force when screwing the supporting pipe is more pressure forces on the support anchor. To support the anchor is rigidly fixed to the ends of the stretch marks-vant 29. The tension and fixing them in a tense position is performed after installation of the support and mounting platform. Consequently, there is a strained construction of the increased stability of the system platform supports as the supports of the platform, and supports, load-bearing generators.

The proposed solution allows to use the minimum number of generators, as simple as possible to set them into position and remove for repair or replacement, maintenance in the working position, their work does not prejudice about who can survive in the environment, that is, provides the so-called "green" technology generation.

The proposed solution can be used when mounting on offshore platforms for oil and gas production.

The proposed solution can be implemented, for example, in the framework of the international Russian-Japanese project in the waters of the Kuroshio current, the width of which is 170 km, depth - 700 meters, and the required flow rate of 4 miles per hour. The project may involve the construction of an underwater power plant with a total capacity of 4.5 GW. This will require, for example, only 18 generators and generated enough energy to cover all the needs of the metropolis with a population of 16 million people. The expected payback period of the project 5-year period of operation of not less than 100 years for periodic repair or replacement of individual generators.

1. A flow generator horizontal type, comprising a stator and a rotor placed on the same axis as the turbine, driven by the forces of water flow, characterized in that the rotor is made hollow, with an internal cavity of the rotor is formed in the shape of a Laval nozzle and inside the cavity of the fixed turbine blades directed toward the axis of rotation and located on the inner surface of the rotor along helical lines.

2. Running electrogene the ATOR according to claim 1, characterized in that the stator winding and the rotor is isolated, for example, PTFE, reinforced tube of heat shrinkable material, the conductors filled in with glass, and the remaining void is filled with a material being a magnetic core according to its physical properties, such as magnetopolaron, so that the stator and the rotor are monoliths, and the gap between the rotor and the stator is increased without reducing the adhesion of their magnetic fields.

3. A flow generator according to claim 1, characterized in that, with the aim of eliminating axial displacement of the rotor relative to the stator, and between them is placed the thrust bearing.

4. A flow generator according to claim 1, characterized in that it consists of sections connected to each other through flanges.

5. A flow generator according to claims 1 to 4, characterized in that it is provided with a protective grid is under stress.

6. Underwater power plant on a stationary platform, including a group of generators made according to any one of claims 1 to 5, and installed to meet the water flow on stationary supports, wherein the supports for the installation of the generators are equipped with adoptive cones with cradles, and spaced by a multiple of the length of the section of the generator, and the power generators installed at different depths from the water surface to the displacement.

7. Underwater power plant on the stationary platform according to claim 6, characterized in that each bearing consists of a tube, its screw part of the screw in the bottom, and bottom supports, anchors, made in the form of a rigid container with rolled back from her air, connected to each other by increasing the grip support with soil centering cones on the mating elements, and the bottom bearing-anchor connected strained metal guys with a technology platform.

8. Underwater power plant on a stationary platform on PP and 7, characterized in that the power plant includes a technology platform with a pier and on the technological and switching equipment that is connected by cables to the generators and equipment on the Bank to transfer the generated power and energy for technological and household needs, as well as living quarters for staff and helipad.



 

Same patents:

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2 dwg

FIELD: power industry.

SUBSTANCE: hydraulic turbine of immersion type includes rotor 20, housing-stator that is integrated into rotor 20 and electricity generating means. Rotor 20 has outer rim 22 that encircles the blades 21. There is one or more floating chambers 60 located in outer rim.

EFFECT: rotor weight reduction for floating obtaining.

6 dwg

FIELD: machine building.

SUBSTANCE: invention refers to devices wherein flow of liquid rotates big rotor of screw type or rotor wheel having external circular rim positioned inside big circular case. A hydro-electric turbine consists of rotor 20 positioned inside case 30 with external circular rim 22 located in channel 32 made in case 30. The turbine is improved due to making at least one exit channel 50 for removal of foreign particles. Foreign objects caught between rotor 20 and case 30 are removed through exit channel 50.

EFFECT: avoiding or minimisation of foreign objects accumulation in channel of case.

6 cl, 4 dwg

FIELD: power engineering.

SUBSTANCE: method is designed for generating electric energy using natural energy enclosed in high pressure formation. Proposed method includes placing of turbine in well to which high-pressure agent is delivered, and electric generator with cable. Turbine is installed in encased well between showing high-pressure formation and intake low-pressure formation. Turbine is connected by pipes with electric energy generator. Flow of agent from high-pressure formation into low-pressure formation and to surface is provided. Regulation of agent flow into annulus and tube space is provided by distributing valve arranged in lower part of assembly of turbogenerator and hole between housing of turbine and pipe connecting tube space with annulus.

EFFECT: provision of effective generation of electric energy using energy contained in high-pressure formations.

2 cl, 1 dwg

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