Power generator set into operation by tidal currents

FIELD: power engineering.

SUBSTANCE: proposed power generator contains turbine installed in turbine housing for turning around vertical axis. Turbine is connected with support column resting by lower section for turning against lower section of turning housing which is in meshing with upper section of inner wall of turbine housing through great number of turnable members. Thanks to it turbine can be selectively turned in turbine housing by means of turnable members.

EFFECT: provision of effective operation at both directions of water current.

9 cl, 3 dwg

 

The invention relates to apparatus for generating electrical energy from a current of water masses, especially tidal currents, mainly in the narrow and shallow Straits. In particular, the invention relates to a power generator driven by tidal currents, containing a turbine mounted in the housing for rotation therein around an essentially vertical axis.

The invention is of interest, in particular, where necessary, road or bridge connections.

Tidal currents in the sea are caused by the gravitational forces of the moon and sun. Huge masses of water are pushed back and forth and constitute the low tide and high tide. These waves move in a westerly direction due to the rotation of the Earth and have a height of waves in the major oceans of less than one meter. When these tidal waves enter the restricted areas, there are large amplitude of the tide. One example of this is the channel with the difference between high tide and low tide up to 15 m In other places, such as in the Oslo fjord, there may be less difference between high tide and low tide. This is due to geographical conditions.

Smooth lifting and lowering of the surface of the sea, driven by gravitational forces of the heavenly bodies, can be calculated in advance for a long time. These calculations are listed in the tide tables for pain the perspective used seas. This predictable component of the tidal currents, namely the astronomical tidal range, can be used to generate electrical energy. Additionally, there is a meteorological component, which is caused by wind and air pressure. One example of this is the Oslo fjord, where prolonged low pressure and the South wind can pump more mass of water in the fjord system. This component cannot be used to generate electrical energy. However, at the planning stage it is necessary to take into account that the meteorological component as astronomical component can occur simultaneously.

Held at the European Council analysis shows that the potential of tidal energy is more than 100 TWh, mainly around the coasts of Britain and France. Suitable places in Norway for tidal power plants are from the Northern part of Western Norway to the border with Russia. Unlike wind and waves, which depend on unstable geophysical processes, the astronomical component of the tidal flow is steady and predictable source of energy.

Energy can be obtained from the tidal flows through the use of the difference in level between high tide and low tide (potential energy) and curb kinetic energy is GII water flow, or a combination of these energy types.

The use of energy from tidal flows was carried out in a special mill structures in France and Spain to the eleventh century. Currently in operation are a few tidal power plants. The most famous are the large power station at La Rance in France with 24 turbines and smaller power plant in Kislovodsk in Russia. A common feature of these plants is the use of still installed turbine type Kaplan with adjustable guide vanes and adjustable turbine blades. When the tide changes direction, the flow of water first hits the guide vanes after passing through the turbine. This decreases the efficiency of the turbine.

In the patent application of Norway No. 20010737 disclosed system for mounting on piles to the bottom with a fully submerged unit turbine and generator. The document describes a system for connection with pile Foundation and detach from it.

In the US 5440176 disclosed installation for generating electrical energy, containing the submerged frame structure with blocks turbine and generator made with the possibility of raising and lowering and rotation separately.

In addition, GB 2298004 disclosed tidal power plant, where turbinectomy in the flow channel in the dam or a dam with a road on top. In the US 4468153 disclosed tidal power plant, which has a turbine which can be rotated, so you can use tidal movement in both directions. In WO 00/50768 and GB 2311566 disclosed water turbine made use of flowing water, in particular, the tidal currents. Turbine is installed on the pile or column, which can be rotated.

Therefore, there is a need for a device for generating electrical energy from tidal currents, effective in terms of value, this machinery can be quickly and efficiently removed from the sea and to translate, for example, in place of maintenance without the use of divers and expensive marine cranes. It is also desirable to create a simple design turbine high efficiency, independent of the direction of water flow. It is also desirable to create a device, the power generator, which is located so that the actual generator and other electrical equipment installed above the highest registered level of the water and, thus, is protected and easily accessible for operation and maintenance.

These problems are solved according to the invention by a device containing a turbine mounted in the turbine housing with the possibility of turning it around, essentially, the vertical axis, characterized in that the turbine is mounted on a support column, which is the bottom section is based can be rotated on the lower portion of a turbine casing and which is the top section in the horizontal plane based on the set of rotary elements being in engagement with a section of the inner wall of the turbine casing, thereby specified turbine can be selectively rotated within the enclosure of the turbine so that the turbine all the time optimally located relative to the prevailing direction of flow of water.

Preferred embodiments of the device according to the invention are disclosed in dependent clauses 2-9 appended claims.

Another purpose of this invention to provide a solid and absorbing vibration of the connection between the steel construction of the turbine and internal rough concrete surface of a turbine casing. Embodiment of places reasonable demands on the concrete surface and the inner profile of a turbine casing, and possible irregularities are absorbed by the seals.

Below is a detailed description of one way of carrying out the invention with reference to the accompanying drawings, in which similar parts are denoted by the same positions and in which is shown:

figure 1 - three devices, according to izopet which were installed in series with the formation of the roadway, while one device is shown in section;

figure 2 - simplified diagram of the arrangement according to figure 1, top view;

figure 3 is a section along the plane C-C in figure 1.

As shown in figure 1, the device according to the invention includes a turbine 10 with the turbine blades 12 mounted on the support column 22 in the housing 30 of the turbine. The turbine housing may be made of concrete and consist of pre-manufactured items that are delivered to the site and installed at the desired point on the seabed, so that the upper part (the roadway 40) is above the highest registered level of the water. The housing 30 of the turbine shown in figure 1, is closed, except for flow-through holes 32, through which pass the flow of the tidal current. In the turbine housing in the right part of figure 1 cover of a turbine casing removed to show the internal structure of the building and installation of the turbine. You can see that turbine connected to a generator 38 (preferably located in the housing 39 of the generator on the same level with the specified road 40). The advantage of this is that the generator 38 is securely located above the highest recorded water level and to him there is easy access for operation and maintenance.

Figure 2 shows a top view, the location where the housing 30 turbines them is have a hole 45 for access, which is normally closed by a cap 44. After installation, extensive maintenance and return entire block generator-turbine can be easily installed over the hole 45 of the access installation tool 42, such as a car, and to return or to omit a complete unit generator-turbine.

As mentioned above, the device according to the invention includes a turbine 10, which is installed on the support column 22. At its upper end the supporting column connected to the generator 38, and at its lower end rests at the point 24 on the bottom of the turbine casing. The lower the reference point can preferably be rotatable connection with a water lubricant, for example of rubber, which ensures the rotation of supporting the turbine columns around the vertical axis.

Figures 1 and 3 shows essentially circular element 28 mounted on the support column under the generator. This element tapers in the direction of the turbine to reduce the flow-through holes 32 of the turbine casing to a size essentially equal to the diameter defined by the turbine blades 12. Of course, it is well known to use so-called principle of Venturi to increase the flow velocity and to extract the greatest possible energy of the water mass.

Area in the turbine housing on top of the element 28 preferably is dry, then water is not domainprotect in this space. To provide horizontal support specified columns 22, the upper section of the supporting column, a plurality of rotary elements 36, which, when the units are in engagement with a section of the inner wall of the turbine casing. These rotary elements (figures shown are three of them) are preferably driven hydraulically or electrically rubber wheels. In addition to providing horizontal support these rotary elements or wheels 36 can cause the rotation of the turbine, while desirable, relative to the direction of water flow. When it is desirable to rotate the turbine in the direction of the tide, just actuate the wheel 36, and due to friction between the wheels and the inner wall of the housing of the turbine is turning support column 22. Wheel 36 is preferably filled with one or more fluid-fluid, such as air and/or another gas and/or liquid.

To prevent leakage from the zone of flow in an area over a circular element 28 may be provided to seal around most of the periphery of the circular element 28. This seal 34 may be, for example, a rubber tube, which can selectively expand and contract using hydraulic or pneumatic means and which is in addition to the specified function is AI helps to keep the reference column in the desired position (in other words, to be some kind of locking mechanism) and to prevent the propagation of vibrations (and thus noise) from the turbine during operation in the turbine housing. The seal 34 also effectively absorbs the unevenness of the inner wall of the turbine casing. The rigidity of the seal can preferably be adjusted depending on the actual load and vibration. In addition, the seal can preferably blow when the rotation of the turbine and inflate when the rotation of the turbine into the new desired position. Such inflation and deflation can preferably be automated and synchronized with the rotation of the turbine at the stage of changing the direction of the tidal stream.

It is known that you need as much of the energy of the water masses to pass on the turbine blades. This means that the water after passing through the turbine blades has a greater freedom for rotation. This is achieved in a known manner by means of the guide vanes, which impart water masses defined rotation opposite to the direction of rotation of the turbine before reaching the water masses of the turbine blades. In the device according to the invention is solved by the fact that the support column 22 is made in the form of vanes. This is shown in figure 3 in section along the line a-a and in section along the line B-B, from which it follows that the supporting column having the t cross-sectional profile, which provides the rotation in the direction opposite to the rotation direction of water flow when passing through the turbine blades 12.

As shown in figures 1 and 2, the desired number of devices according to the invention is in series with the Foundation for the roadway 40. The housing 30 of the turbine may be, as mentioned above, pre-manufactured item that can be delivered by swimming in place. Thus, the invention provides a device for efficient in terms of cost of extraction of electrical energy from tidal currents. Machinery can quickly and effectively be raised from the sea and move to place maintenance without requiring the use of divers and expensive marine cranes. During lifting and installation of the swivel block elements (rubber wheels 36) you can blow off to facilitate raising or lowering of the block.

When the unit is in place in the turbine housing, wheel cheat until you are satisfied with the contact with the inner wall 31.

As mentioned above, the management of rotary elements, and sealing is performed automatically, for example, using the computer when you change the direction of tidal flow. Environment to create internal pressure in the seal (for example, a flat pipe 34) is removed, that is that the tube takes its non-operating position, which is usually located at a distance from the concrete wall. Then include a rotary motor, and the rotary elements 36 are moved until the turbine will not be rotated 180°. Then the compressed medium is injected into the seal, which in its pressurized condition provides a fixed, but elastic connection between the turbine and the turbine housing.

The invention offers a simple design turbine high performance in both directions of water flow. Sensitive equipment such as the generator and other electrical equipment are securely above the highest normal water level. Furthermore, it enables effective in terms of cost and absorbing the noise of the connection between the unit turbine-generator and turbine housing.

1. Device for generating electrical energy, driven by tidal currents, containing the turbine (10)installed in the housing (30) of the turbine to rotate it around an essentially vertical axis, characterized in that the turbine (10) is connected to the reference column (22), which is the bottom section (24) is supported to rotate on the lower portion of a turbine casing and which is the top section in the horizontal plane based on the set of rotary elements being in engagement with the internal area with ence of a turbine casing, due to which the specified turbine can be selectively rotated within the enclosure of the turbine so that the turbine all the time optimally located relative to the prevailing direction of flow of water.

2. The device according to claim 1, characterized in that the said rotary elements arranged to actuate and thereby selective rotation of the turbine.

3. The device according to claim 2, characterized in that the rotary members are driven hydraulically or electrically wheels (36).

4. The device according to claim 1, characterized in that it contains the element (28) on the support column between the turbine (10) and the rotary elements, which narrows in the direction indicated turbine in order to reduce flow-through holes (32) of the turbine casing to a size almost equal to the diameter defined by the blades (12) of the turbine.

5. The device according to claim 1, characterized in that it contains the seal (34) for, essentially, a circular element (28) in a horizontal plane on a support column having a greater circumference than the support column, with the specified element is located between the turbine (10) and the rotary elements (36), this seal is located around most of the periphery of the circular element (28).

6. The device according to any one of claims 1 and 5, characterized in that the seal (34) can selectively be brought into contact with OK usausa area of the inner wall (31) of a turbine casing with the purpose of holding the support columns in the desired position to prevent entry of water into the space above the specified circular element (28) and to prevent the transmission vibrations from the turbine during operation in the case (30) of the turbine.

7. The device according to claim 1, characterized in that at least one portion of the specified columns (22) made in the form of vanes for imparting to the flow of water during operation, the direction of rotation, which is opposite to the direction of rotation, which is attached to the water flow during the passage of the blades (12) of the turbine.

8. The device according to claim 1, characterized in that the energy transfer between the turbine (10) and generator (38) is provided through an internal channel in the specified reference column (22) and that the specified generator is located at a level above the specified circular element (28), preferably on a specified body (30) of the turbine.

9. The device according to claim 1, characterized in that the housing (30) of the turbine is pre-manufactured item that can be delivered by swimming to the place where you want to generate electrical energy, and installed on the seabed so that the upper portion of the casing of the turbine is higher than the registered normal water level.



 

Same patents:

FIELD: power engineering.

SUBSTANCE: proposed hydroelectric station includes energy converter consisting of chain of hydraulic turbines. Hydraulic turbine is built on hollow carrying shaft-cylinder with conical fairings on bases inscribed into inner ends of blades-semicylinders whose outer ends are clamped together in several places over length of hydraulic turbine by narrow rings-hoops and form multiblade cylinder with hollow belts with ballast on end faces providing neutral buoyancy of hydraulic turbine. Adjustable ballast in hollow part of carrying shaft-cylinder provides variable buoyancy of hydraulic turbine to submerge hydraulic turbine in water completely at neutral buoyancy or rising to surface. Energy converter is connected with electric generators arranged on the bank through system transmitting rotation and arranged in bank cavities. Rotation transmitting system employs different modes of transmission of rotation and connection and movable power unit with travel motion mechanism by means of which it displaces inside cavity. Movable power unit is connected with energy converter and, moving vertically, can set power converter at required depth.

EFFECT: increased efficiency.

4 dwg

The invention relates to hydraulic structures and is used to convert the energy of the tides in the gravitational potential energy of the lifted solids

Tidal power plant // 2099587
The invention relates to hydropower and can be used in tidal power plants and wave energy installations

Power plant // 2075635
The invention relates to the field of wind and hydropower, and can be used as the working bodies of the wind turbines and hydroelectric power plants (HPP) to convert the energy of wind or water flow into electrical energy

Marine power plant // 2046207

FIELD: power engineering.

SUBSTANCE: proposed hydroelectric station includes energy converter consisting of chain of hydraulic turbines. Hydraulic turbine is built on hollow carrying shaft-cylinder with conical fairings on bases inscribed into inner ends of blades-semicylinders whose outer ends are clamped together in several places over length of hydraulic turbine by narrow rings-hoops and form multiblade cylinder with hollow belts with ballast on end faces providing neutral buoyancy of hydraulic turbine. Adjustable ballast in hollow part of carrying shaft-cylinder provides variable buoyancy of hydraulic turbine to submerge hydraulic turbine in water completely at neutral buoyancy or rising to surface. Energy converter is connected with electric generators arranged on the bank through system transmitting rotation and arranged in bank cavities. Rotation transmitting system employs different modes of transmission of rotation and connection and movable power unit with travel motion mechanism by means of which it displaces inside cavity. Movable power unit is connected with energy converter and, moving vertically, can set power converter at required depth.

EFFECT: increased efficiency.

4 dwg

FIELD: power engineering.

SUBSTANCE: proposed power generator contains turbine installed in turbine housing for turning around vertical axis. Turbine is connected with support column resting by lower section for turning against lower section of turning housing which is in meshing with upper section of inner wall of turbine housing through great number of turnable members. Thanks to it turbine can be selectively turned in turbine housing by means of turnable members.

EFFECT: provision of effective operation at both directions of water current.

9 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: support system intended for, at least, one underwater turbine plant incorporates turbine units made up of turbine assemblies 3 and load-bearing column 1 coming vertically from underwater and seated on the seabed. The system includes a load-bearing structure for, at least, one turbine assembly mounted on column 1 and turning around it, and an appliance allowing selective motion of the load-bearing structure relative to column 1. Column 1 length section, top section 8, wherein the turbine assembly move, consists of two separate sections 9, 10 facing each other and separated by a certain distance between them to make lengthwise gap 11 between the said sections 9 and 10. Sections 9, 10 have a D-shape and form a cross-section of column 1 in the form of a complete ellipse or an oval. Bottom section 12 of column 1 features a round cross-section.

EFFECT: higher reliability of the support system allowing the turbine repair and lower costs.

22 cl, 27 dwg

FIELD: mechanics.

SUBSTANCE: device for anchoring floating structures incorporates mooring bar with ends furnished with the appliance to turn the aforesaid rod about its axis of rotation. At that the rod free end is provided with a sleeve letting the chains or cable to pass there through. The anchor chain passed through one of the aforesaid sleeves is fastened at one end faces of the said floating structure. Besides that, to up the structure stability, the proposed device can be furnished with links connecting the free ends of both mooring rods to the structure in question.

EFFECT: anchoring system causing no floating structure trim difference and providing for stable positioning with minor drift, reduced distance between anchor and floating structure.

11 cl, 15 dwg

FIELD: machine building.

SUBSTANCE: proposed power generation plant exploits the power of sea wave and tides. The plant comprises a hollow cylindrical housing with its bottom open. It communicates with seawater and is anchored to sea bottom. The said housing features a narrowing forming a smaller cylinder. The casing is attached to the aforesaid cylinder. The aforesaid casing houses an impeller driven by air sucked in/out from the housing inner space via air ducts formed by the aforesaid casing and non-return valves mounted inside the upper small cylinder, the air force being directly dependent upon the water level caused by the running wave.

EFFECT: simple low-cost high-efficiency power generation unit to be mounted at whatever sea- or-ocean coast line.

4 cl, 22 dwg

FIELD: mechanics.

SUBSTANCE: turbine plant driven by water to produced power from the water flow column comprises a rectangular deck with streamline cross section furnished with a lower and upper surfaces incorporating front and tail edges relative to the water flow direction at least one turbine and a turbine assembly going up from the deck upper surface and deck support. The said support stays permanently on the water column bottom so that the deck, when installed onto the aforesaid support, the vertical space between the deck power surface and water bottom, and includes an appliance to move the deck relative to the support elements for the deck to move from operating into uplifted position whereat every turbine assembly is accessible on water column surface.

EFFECT: production of bearing structures to support hydraulic turbines.

10 cl, 26 dwg

FIELD: power engineering.

SUBSTANCE: invention relates to hydroenergetics, to low pressure flows of seas, rivers and water outlets of hydro electric stations and reservoirs. A tidal hydroelectric plant contains a cylindrical body of the machine compartment with a gear box and electric generator of the tail hydroturbine with arms, mounted on its axis and the axis of rotation. On the upper part of the body is fixed a flat pylon, on the end of the pivot system and the axis of rotation. The body is suspended on a crossbeam in the passage of the catamaran for lifting the power station to the level of the servicing platform on the grooves of the support bridge pier, connected by the arch with a lifting mechanism. Arms of the hydroturbine are made short and wide sweptforward on the leading edge and with a concave surface in the form of a parabolic curve, and a convex surface of the tailpiece perforated with slanting slits.

EFFECT: reduces the depth of the low pressure power stations, increases the hydrodynamic quality of the hydroturbines arms, and ensures periodic lifting of the power station from the water.

3 cl, 4 dwg

FIELD: power engineering.

SUBSTANCE: invention relates to tidal power stations. Device (1) for the tidal power station contains at least one underwater sail (14), essential construction (2, 4) and at least one transmitting element (10). The underwater sail (14) connected with the transmitting element (10) can move between two storage devices (18). When the sail is in the storage devices, it is not connected with the transmitting device.

EFFECT: reduction in the cost of producing electric energy, reduction in the operational problems and increase in efficiency.

9 cl, 6 dwg

FIELD: power engineering.

SUBSTANCE: invention relates to small power engineering for transforming the flow of rivers and tides into angular kinetic energy on free-flow link hydroelectric power plants. The hydro-turbine consists of a hollow carrying shaft-cylinder with adjustable ballast, which makes it possible for the hydro-turbine to be fully submerged into water or bring it to the surface. On the shaft-cylinder are placed semi-cylinder arms, to whose ends are attached annular containers with ballast, which ensure neutral buoyancy of the hydro-turbine. On the shaft-cylinder are mounted equally along its length several discs or flat cylinders with grooves on the rims, to which are attached arms. Arms have the shape of the lateral sides of the hollow cylinder, cut-off longitudinally, thus, so that the discs are inscribed on the inner ends of the arms. A central hole is formed between the discs, of the surface carrying shaft-cylinder and the inner ends of the arms, through which communicate all vane spaces. As a result the flow goes through the entire turbine, touching the arms, which are located on the rear from the flow of the turbine end. The outer ends of the arms are tightened by rings-hoops and will form a multibladed cylinder, whose base is fully closed with the containers of ballast, tightly joined with the ends of the arms and hollow carrying shaft-cylinder.

EFFECT: hydro-turbine has a high coefficient of efficiency and is simple to produce.

4 dwg

FIELD: electricity.

SUBSTANCE: water flow energy converter into electrical energy consists of a body with open flow windows being provided in the lower part of the body during low-tide and in the upper part during high-tide. The converter also includes endless band inside the body, which is reeled on drums, operating blades in the form of double-lever plates. The operating blades are bent relative to each other and provided with hinge in the point of bending. They are installed on the external side of endless band along the whole its length. The stabilisers are installed on drum shafts outside the body boards. The said stabilisers pull down endless band with blades with regard to the body bottom to activate part of the blades in the upper part of endless band during high-tide. Alternatively, the stabilisers lift the endless band to activate part of the blades in the lower part of the endless band during low-tide. There are vertical slots made in the body to adjust height of lifting or pulling down. The movable gate is attached to the body end side and directs flow to the upper part of endless band during high-tide. The movable gate takes horizontal position to allow free flowing during low-tide.

EFFECT: improved effectiveness of device, simple structure and operation, wade range of application.

3 dwg

Up!