DE102010034160A1 - Pumped-storage power plant, has storage chamber storing and releasing storage medium and formed in buoyant manner, and conversion unit generating electrical energy during storage of storage medium into storage chamber - Google Patents

Pumped-storage power plant, has storage chamber storing and releasing storage medium and formed in buoyant manner, and conversion unit generating electrical energy during storage of storage medium into storage chamber

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Publication number
DE102010034160A1
DE102010034160A1 DE102010034160A DE102010034160A DE102010034160A1 DE 102010034160 A1 DE102010034160 A1 DE 102010034160A1 DE 102010034160 A DE102010034160 A DE 102010034160A DE 102010034160 A DE102010034160 A DE 102010034160A DE 102010034160 A1 DE102010034160 A1 DE 102010034160A1
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Germany
Prior art keywords
storage
storage chamber
storage medium
characterized
power plant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE102010034160A
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German (de)
Inventor
Anmelder Gleich
Original Assignee
Wilhelm Ebrecht
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Publication date
Application filed by Wilhelm Ebrecht filed Critical Wilhelm Ebrecht
Priority to DE102010034160A priority Critical patent/DE102010034160A1/en
Priority claimed from EP11006534A external-priority patent/EP2418375A1/en
Publication of DE102010034160A1 publication Critical patent/DE102010034160A1/en
Application status is Withdrawn legal-status Critical

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/06Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D9/00Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10Combinations of wind motors with apparatus storing energy
    • F03D9/13Combinations of wind motors with apparatus storing energy storing gravitational potential energy
    • F03D9/14Combinations of wind motors with apparatus storing energy storing gravitational potential energy using liquids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D9/00Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10Combinations of wind motors with apparatus storing energy
    • F03D9/11Combinations of wind motors with apparatus storing energy storing electrical energy
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D9/00Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20Wind motors characterised by the driven apparatus
    • F03D9/25Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
    • F05B2220/00Application
    • F05B2220/70Application in combination with
    • F05B2220/708Photoelectric means, i.e. photovoltaic or solar cells
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
    • F05B2240/00Components
    • F05B2240/90Mounting on supporting structures or systems
    • F05B2240/93Mounting on supporting structures or systems on a structure floating on a liquid surface
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
    • F05B2240/00Components
    • F05B2240/90Mounting on supporting structures or systems
    • F05B2240/97Mounting on supporting structures or systems on a submerged structure
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy
    • Y02E10/22Conventional, e.g. with dams, turbines and waterwheels
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage
    • Y02E60/17Pumped storage

Abstract

The invention relates to a pumped storage power plant with a pump device (20), which conveys a storage medium to a level of higher potential energy, a conversion device (20), which converts potential energy of the storage medium into electrical energy, and a storage chamber (10) for storing and extracting the storage medium. The object of the invention is to provide an improved pumped storage power plant and method, by means of which also in the open sea electrical can be stored in potential energy and also a simple and safe installation and / or maintenance is possible. This object is achieved in that the storage chamber (10) is designed buoyant and the conversion device (20) generates electrical energy when the storage medium is stored in the storage chamber (10).

Description

  • The invention relates to a pumped storage power plant with a pumping device that promotes a storage medium to a level of higher potential energy, a conversion device that converts potential energy of the storage medium into electrical energy, and a storage chamber for storing and storing the storage medium. The invention also relates to a method for storing electrical energy by means of conversion into potential energy, in which a storage medium is alternately stored or stored in a storage chamber while changing the potential energy of the storage medium.
  • Pumped storage power plants and the methods used to store electrical energy are widely known. As a rule, pumped storage power plants are used to store electrical energy by means of conversion into potential energy in the case of overcapacities in an electrical power network. Thus, in particular peak loads and low loads can be compensated in an electrical power grid.
  • Pumped storage power plants are known for storing electrical energy by means of conversion into potential energy, in which water is preferably conveyed as storage medium in a mountainous terrain from a low level, for example a valley, to a higher level, for example a mountain. Other embodiments allow storage of electrical energy by means of conversion into potential energy even in flat or even regions or in a pool of water, for example a lake or sea.
  • The DE 10 2006 059 233 A1 describes a storage plant in a lake or sea, in which for the storage of electrical energy, a buoyant body is moved from a small depth of water into a large water depth and aufschnellt to remove the electrical energy of the buoyant body in the direction of the water surface.
  • The DE 10 2008 019 504 A1 describes a pumped storage power plant in a plane in which a first water level is temporarily lowered compared to a second water level and the resulting difference in height of the water is used to generate electricity.
  • The DE 32 01 507 A1 describes a power generator, which is arranged by means of a buoyant housing on a water surface below a waterfall and generates electrical current by converting the potential or kinetic energy of the falling water.
  • The object of the present invention is to provide an improved pumped storage power plant and method, by means of which electrical energy can also be stored in potential energy on the open sea, and in addition a simple and safe installation and / or maintenance is made possible.
  • According to the invention this object is achieved by a device having the features of the main claim and a method having the features of the independent claim. Advantageous embodiments and further developments of the invention are listed in the respective subclaims, the description and the figures.
  • The inventive pumped storage power plant apparatus having a pumping device that conveys a storage medium to a higher potential energy level, a conversion device that converts potential energy of the storage medium into electrical energy, and a storage chamber for storing and storing the storage medium provides for the storage chamber to be buoyant is formed and the conversion device generates electrical energy during storage of the storage medium in the storage chamber.
  • It is inventively provided that the pumped storage power plant can be operated completely on the open sea and that in particular water is used as a storage medium. The storage and withdrawal of water between two reservoirs, namely the storage chamber and the sea, the water level within the storage chamber is permanently below that of the sea level. By means of the pumping device, the water is pumped to the withdrawal of a level of low potential energy, ie from the storage chamber to a level of higher potential energy, ie in the sea. During the withdrawal of the water, the weight of the storage chamber decreases, so that the storage chamber in the sea water according to the invention buoyancy. As a result, the storage chamber floats on withdrawal. In the storage or inflow of the water from the sea into the storage chamber, a conversion device is driven by the inflowing water, which converts the potential or kinetic energy of the water into electrical energy. Due to the increasing weight of the storage chamber, the storage chamber decreases, so that due to the inflowing water of the original height difference due to the initial draft of the storage chamber is maintained. Due to the relatively small height difference between the sea level and the water level in the storage chamber, only relatively small pressure forces act on the wall of the storage chamber, so that they are relatively thin can be executed. Alternatively, the pumped storage plant can also be operated on another body of water that is sufficiently large and deep. The pumped storage power plant according to the invention thus enables the storage of electrical energy without requiring space or landscape disturbances on the mainland.
  • An embodiment of the invention provides that the pumping and converting means are mounted vertically displaceable on the storage chamber. As a result, the pumped storage power plant is constructed on the one hand as a coherent system, but on the other hand divided into two relatively movable system parts. This allows movement of the pumping and conversion device relative to the storage chamber. The movement of the pumping and converting device relative to the storage chamber is preferably carried out only in the vertical direction, ie höhenverlagernd when sinking and floating the storage chamber. This makes it possible, in particular, for the pumping and converting device to be able to remain permanently on the water surface when the storage chamber sinks or floats.
  • The pumping and converting device are preferably designed to be buoyant and permanently arranged on the water surface. This makes it possible to install, operate and / or maintain the pumping and conversion device on the sea surface, in particular without time-, cost- and safety-intensive diving maneuvers. In addition, only a simple and inexpensive housing for the pumping and conversion device, ie without expensive pressure or immersion tank, is required.
  • In a further development of the invention, the pumping and converting device are combined into one unit, so that the conversion device which is driven by the inflowing water in the storage of the water in the storage chamber, are used in the storage of water from the storage chamber as a drive of the pumping device can. The pumping device is preferably constructed as a pump with a motor, the conversion device as a turbine with a generator, wherein the generator can preferably also be used as a motor for the pump.
  • The pumping and conversion device is preferably mounted on at least one rail or at least one pivot arm on the storage chamber. The rail or swing arm allows movement of the pumping and conversion device relative to the storage chamber. The at least one rail is, for example, constructed as a wall rail and arranged vertically on a side wall of the storage chamber, wherein at least one wheel with a suspension device is movably arranged or hooked to the rail and the wheel is connected to the pumping and conversion device via the suspension device. The suspension device is preferably constructed as a bar or swivel arm arranged on the pumping and converting device and protruding therefrom, at the free end of which the wheel is mounted. In another embodiment, the swivel arm without suspension device and wheel is mounted both on the pumping and conversion device and on the storage chamber pivotable and constraint-free.
  • The storage chamber is preferably designed as a concrete component with a substantially cylindrical cross-section. It is thus in particular a sufficient stability of the storage chamber allows. In addition, a concrete construction of the storage chamber for their manufacture, assembly, transport and tightness is advantageous. Concrete as a covering of the iron or steel components required for stability represents in particular a suitable protection against corrosion. The preferably cylindrical cross section of the storage chamber increases its stability, in particular due to the high external pressure applied to the storage chamber.
  • In one embodiment of the invention, the storage chamber has an upper opening and an inwardly inclined upper edge of the side walls. The storage chamber is preferably constructed in the form of a large pot, wherein only the lower and lateral walls seal the storage chamber from the environment. The upper opening can be used for example as an access hatch for maintenance or assembly. The opening is preferably closable with a tarpaulin, so that an inadvertent entry of water, for example in rain or high waves, is prevented in the storage chamber. The laterally at the upper edge, ie at the arranged above the waterline part of the walls, inwardly inclined walls of the storage chamber are particularly advantageous for improved aerodynamics or wind conductivity at the upper part of the storage chamber. This contributes significantly to the stability of the storage chamber, especially during storms.
  • In a further embodiment of the invention, the storage chamber on one outer wall at least below the waterline one or more outwardly projecting wall elements each in the form of a rudder or a fin. The wall elements allow an additional frictional effect of the storage chamber within the water and stabilize the storage chamber. It is prevented, for example, that the storage chamber is rotated due to the wind around its own axis or is moved because the friction within the water counteracts the rotational movement of the storage chamber.
  • The storage chamber is preferably defined by at least one holding device in a reservoir of the storage medium, in particular a sea, höhenverlagerbar, so sinkable from shallow water depths in large water depths and vice versa. The holding device makes it possible for the storage chamber to be fixed at one position or location at least against movement in the horizontal direction, and secondly for the storage chamber to be movably supported at least in the vertical direction for lowering or floating. The holding device is preferably constructed as an anchor having a tensioning device, by means of which a chain arranged between anchor and storage chamber or a rope can be pre-relaxed or relaxed.
  • In one embodiment of the invention, it is provided that the storage chamber has a system for generating electrical energy and / or for driving the pump device from renewable energies. This makes it possible that the required for the storage of the storage medium electrical energy can be obtained directly from renewable sources. The system is arranged, for example, on the storage chamber at a part located above the water level and constructed as a wind turbine. Further examples of the system may be a photovoltaic system or a flow power plant below the water surface.
  • The method according to the invention for storing electrical energy by means of conversion into potential energy, in which a storage medium is alternately stored or stored in a storage chamber while changing the potential energy of the storage medium, provides that the storage chamber is arranged floating in a storage medium supply and during the storage the storage medium sinks into the storage chamber, the storage chamber and potential converted into electrical energy and floating in the storage medium from the storage chamber, the storage chamber and electrical energy is converted into potential energy.
  • It is provided according to the invention that the storage and retrieval of the storage medium, in particular water, between the storage chamber and a storage medium storage, in particular a sea, surrounding the storage chamber takes place. Already due to the weight of the floating storage chamber, this preferably has a draft in the sea, so that the water level located within the storage chamber is permanently below the water level of the sea. As a result, a height difference between the water levels inside and outside the storage chamber is formed. During storage, the potential or kinetic energy of the water is converted into electrical energy by means of the water flowing into the storage chamber. Due to the increasing weight of the storage chamber due to the inflowing water, the storage chamber drops when stored. The sinking of the storage chamber according to the invention is possible until it is placed on the seabed, wherein the water level within the storage chamber is continuously lower than the water level outside the storage chamber, ie the sea. During the withdrawal, water is pumped out of the storage chamber into the sea using electrical energy, so that the weight of the storage chamber drops and the storage chamber buys and floats. The storage and withdrawal of the water according to the invention carried out alternately as needed.
  • During the storage and / or discharge of the storage chamber, the pumping and converting device according to the invention remains permanently on the surface of the storage medium supply or the sea. This makes it possible to install, operate and / or maintain the pumping and conversion device on the surface of the sea, ie without any diving maneuvers. In addition, this allows an improved and increased functionality compared to submersible systems and a simple and safe installation.
  • It is envisaged that a connecting device, such as a chain or a rope, is arranged between the storage chamber and the holding device and is biased or relaxed when sinking or floating of the storage chamber. The holding device is preferably fixed to the bottom of the sea and allows the storage chamber in spite of movement in the vertical direction, ie when sinking or floating, can be set in the horizontal direction. In particular, a drifting or floating away of the storage chamber is thus prevented. After storage, the storage chamber according to the invention has a high draft and is therefore located closer to the bottom of the sea. As a result, the connecting device between the holding device and the storage chamber is shortened, so that the connecting device is biased. After the storage, the storage chamber has a low draft and is therefore further away from the seabed. As a result, the connection between the holding device and the storage chamber has also increased, so that the connecting device is correspondingly relaxed, that is yielded, becomes.
  • The electrical energy required for the storage medium to be emptied from the storage chamber is preferably obtained from renewable energies. Renewable energies occur discontinuously, so that their conversion into electrical energy is subject to constant fluctuations. In the case of wind power plants, for example, this can be a varying strong or weak wind or, in the case of photovoltaic systems, the intensity of the solar radiation varying in intensity. In order to compensate for the fluctuations in renewable energies or to match these with the fluctuations in the electrical grid that occur due to other reasons, the storage of electrical energy is preferably provided by renewable energies. The pumps can also be driven directly by a wind turbine.
  • It is inventively provided that the pumping device is preferably driven by the conversion device. In particular, when designing the pumping means as a pump with electric drive and the conversion means as a turbine with generator, the generator can be used as a motor of the pump. This is particularly cost-effective and space-saving.
  • Embodiments of the invention will be explained in more detail with reference to the accompanying figures. Show it:
  • 1a to 1e a structure of the storage chamber;
  • 2a to 2e a schematic representation of a pivoting arm for mounting the pumping and conversion device to the storage chamber;
  • 3a to 3e a schematic representation of a movable water line between the pumping and conversion device and the storage chamber;
  • 4a and 4b a structure of a flexible pipe connection;
  • 5 a schematic representation of the arrangement of the storage chamber and the holding devices;
  • 6a to 6c a schematic representation of the process of anchoring and a structure of the holding device;
  • 7a and 7b a schematic representation of the storage chamber with a wind turbine.
  • In the 1a is a schematic plan view of the storage chamber 10 shown. The storage chamber 10 has a cylindrical cross section, which at one end face, the top of the storage chamber 10 , an opening 11 having. Inside the storage chamber 10 are equalization chambers 14 arranged, each having a closable opening or a valve 15 having, for example, an electrically operated slide. About these compensation chambers 14 is it possible the storage chamber 10 to trim and keep in a substantially straight position on the water, even if water is only introduced at one point or due to swell or wind, a tendency of the storage chamber 10 established. The cylindrical wall of the storage chamber 10 has at its lower edge a plurality of outwardly projecting wall elements 13 on in the water like oars or fins to stabilize the location of the storage chamber 10 act and in particular a twisting of the storage chamber 10 prevent.
  • At the upper end of the cylindrical wall has this, as well as in 1b and 1c recognizable, an inwardly inclined upper edge 12 on. The inwardly inclined, rounded edge 12 serves for further static stabilization of the storage chamber 10 , prevents ingress of water during high waves and directs the wind flow through the storage chamber 10 away, allowing a reduced air resistance of the storage chamber 10 can be achieved. This allows the storage chamber 10 be held in place with relatively little effort.
  • The at the top of the storage chamber 10 trained opening 11 For example, by means of a tarp or other roof shape 16 getting closed. In the cylindrical center of the storage chamber 10 is a prop 17 for stabilization of the roof construction 16 arranged. The support 17 may have a solid or hollow profile or be constructed as a scaffold.
  • The storage chamber 10 is constructed in particular of concrete and can according to the invention have a diameter of about 300 meters and a height of about 50 meters. At the lower end of the storage chamber 10 , as in 1d and 1e can be seen, are webs 18 formed in which prestressing steels or tensioning cables 18a arranged to increase stability. An increase in stability at the lower end of the storage chamber 10 is particularly necessary in the areas where the storage chamber 10 a connection device 31 is arranged, which is the storage chamber 10 with a holding device 30 connects, which will be explained later.
  • In the middle of the bottom of the storage chamber 10 is an inlet 19 a rigid water pipe 22 arranged. The inlet 19 and the rigid water pipe 22 are for the storage and withdrawal of water in and out of the storage chamber 10 intended. The rigid water pipe 22 is from the middle of the bottom of the storage chamber 10 So the inlet 19 radially outwardly to the lateral or cylindrical wall of the storage chamber 10 guided. In the area of the side wall of the storage chamber 10 is the rigid water pipe 22 with a movable water pipe 23 connected to the pumping and conversion device 20 is guided and in the 3b to 3e is explained. The rigid water pipe 22 is preferably outside the storage chamber 10 arranged.
  • In the 2a to 2e is the one at the storage chamber 10 pivotally mounted pumping and conversion device 20 shown schematically. The pumping and conversion device 20 is depending on the embodiment with the storage chamber 10 by means of at least one swivel arm 21 connected. The swivel arms 21 are constraint free at the storage chamber 10 and / or the pumping and conversion device 20 stored, for example via a ball joint. Depending on the embodiment, the pumping and conversion device 20 as in the 2a to 2c shown outside the storage chamber 10 on a parallel link 21 or, as in 2d and 2e shown on only one swivel arm 21 stored, at the same time also the passage of water into and out of the storage chamber 10 allows. In the 2 B and 2c different operating states are shown, the 2 B shows the floating storage chamber 10 in deflated condition. Leaving the storage chamber 10 Run full, is in the converter 20 the kinetic energy of the incoming water is converted into electrical energy. The more water flows in, the lower the storage chamber sinks 10 one until it is completely filled, which is in the 2c is shown. The storage chamber 10 can rest in the filled state on the ground, in an anchoring in areas with a large water depth in the filled state, a floating anchorage can be provided.
  • Especially in the 2e It can be seen that due to the initial draft of the storage chamber 10 in the deflated state there is a height difference between the water level and the inlet into the storage chamber, which is used to convert potential energy into electrical energy.
  • In the 3a to 3e are two differently structured connections or movable water pipes 23 between the pumping and conversion device and the rigid water line 22 shown. The moving water pipe 23 is on the side of the storage chamber 10 arranged while the rigid water pipe 22 below the storage chamber 10 is arranged. The moving water pipe 23 is in one embodiment, as in the 3b and 3c shown constructed as a hose, which is suitable to ensure a flow even at high external pressure. The hose is also suitable, depending on the operating state of the pumping and converting device, for example when the storage chamber is floating 10 , as in 3b shown to be flexibly bent or deformed. The hose has due to the Höhenverlagerbarkeit the pumping and conversion device 20 opposite the storage chamber 10 a sufficient length and can decrease the storage chamber 10 , as in 3c be shown stretched.
  • In another embodiment, as in the 3d and 3e pictured is the moving water pipe 23 as a pipe joint consisting of several rigid pipe segments 24 and movable joints 25 , built up. The joints 25 allow movement of the rigid pipe segments 24 and a zwängungsfreie storage at the pumping and conversion device 20 , between the segments 24 as well as in the transition area to the rigid water pipe 22 , The embodiment as a pipe connection is more robust than the hose connection, but also more maintenance intensive. Regardless of the embodiment, it is provided that the water pipe ( 22 . 23 ) has a diameter of about 5 to 6 meters to allow a suitable flow rate.
  • In the 4a and 4b is a detail of the joint 25 shown.
  • The joint 25 is formed as a bent pipe section and has at its ends in each case an opening for receiving one end of a water pipe ( 22 . 23 ) on. In the area of the transition of the joint 25 to the water pipe ( 22 . 23 ) are slightly convex transition seals 26 arranged within the hinge tube section. The joints 25 are constructed, for example, as through-joints.
  • In the 5 is schematically the arrangement of the storage chamber 10 and the fixtures 30 shown. The holding devices 30 are star-shaped around the storage chamber 10 arranged and by means of a connecting device 31 For example, a chain or rope, with the storage chamber 10 connected. The holding device 30 is determined at the bottom of the sea, whereas the storage chamber 10 sink or float in seawater.
  • In the 6a it shows how the anchoring process works. It's both the storage chamber 10 as well as the holding devices 30 by means of one or more ships 32 at least floating transportable. In a first step, first the storage chamber 10 transported floating to a desired position or place and lowered by means of inflow of water preferably to the seabed. The holding devices 30 be in a second step in lowered or temporarily fixed storage chamber 10 by means of one or more ships 32 positioned in such a way that a connecting device 31 to the storage chamber 10 is biased. Then, the holding device 30 lowered and set, for example, on the seabed. In a third step, as in the 6b and 6c is shown, the connecting device 31 relaxed, so that in a subsequent withdrawal of water from the storage chamber 10 a floating up of the storage chamber 10 , So an enlargement of it distance to the seabed, is made possible.
  • In the 6b and 6c are a schematic detail of the holding device 30 and the process of relaxing the connection device 31 shown. The holding device 30 has a clamping device 35 for pre-or relaxing the connection device 31 on. The prestressing or relaxing of the tensioning device 35 takes place by means of a coupling member 37 and a detachable pin 36 , The coupling element 37 is on the one hand via a rope or a chain 38 with a boat 32 connected and the other over the pin 36 detachable on the tensioning device 35 the holding device 30 established. When loosening the pin 36 can the tensioner 35 and the adjoining connection device 31 to be relaxed. In one embodiment, as in 6c shown, the holding device 30 an internal cavity 33 so that it can be dragged floating to the place of anchorage. To lower the cavity 33 flooded, leaving the holding device 30 can be anchored to the ground.
  • The 7a and 7b show as an example arranged on the storage chamber wind turbine with wind towers 50 for the conversion of renewable energy into electrical energy. The wind towers 50 are at the top, on the side walls or on the foundation plate of the storage chamber 10 arranged and have different heights. Alternatively or in addition to the wind towers 50 can also have a photovoltaic system on the roof of the storage chamber 10 be arranged.
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • DE 102006059233 A1 [0004]
    • DE 102008019504 A1 [0005]
    • DE 3201507 A1 [0006]

Claims (15)

  1. Pumped storage power plant with a pumping device ( 20 ), which conveys a storage medium to a level of higher potential energy, a conversion device ( 20 ), which converts potential energy of the storage medium into electrical energy, and a storage chamber ( 10 ) for storing and storing the storage medium, characterized in that the storage chamber ( 10 ) is buoyant and the conversion device ( 20 ) when storing the storage medium in the storage chamber ( 10 ) generates electrical energy.
  2. Pumped storage power plant according to claim 1, characterized in that the pumping device ( 20 ) and the conversion device ( 20 ) at the storage chamber ( 10 ) are mounted höhenverlagerbar.
  3. Pumped storage power plant according to claim 1 or 2, characterized in that the pumping device ( 20 ) and the conversion device ( 20 ) are formed floatable.
  4. Pumped storage power plant according to one of the preceding claims, characterized in that the pumping and conversion device ( 20 ) are combined into one unit.
  5. Pumped storage power plant according to one of the preceding claims, characterized in that the pumping device ( 20 ) and / or the conversion device ( 20 ) on at least one rail or at least one pivoting arm ( 21 ) at the storage chamber ( 10 ) are stored.
  6. Pumped storage power plant according to one of the preceding claims, characterized in that the storage chamber ( 10 ) is formed as a concrete member having a substantially cylindrical cross-section.
  7. Pumped storage power plant according to one of the preceding claims, characterized in that the storage chamber ( 10 ) an upper opening ( 11 ) and an inwardly inclined, upper edge ( 12 ) having.
  8. Pumped storage power plant according to one of the preceding claims, characterized in that the storage chamber ( 10 ) at a lower edge of an outer wall at least one outwardly projecting wall element ( 13 ), which acts like a rudder or a fin.
  9. Pumped storage power plant according to one of the preceding claims, characterized in that at least one holding device ( 30 ) the storage chamber ( 10 ) determines höhenverlagerbar in a reservoir of the storage medium.
  10. Pumped storage power plant according to one of the preceding claims, characterized in that at the storage chamber ( 10 ) at least one installation ( 50 ) for generating electrical energy and / or for driving the pumping device ( 20 ) is arranged from renewable energies.
  11. Method for storing electrical energy by means of conversion into potential energy, in which a storage medium is stored in a storage chamber ( 10 ) is alternately switched on or off while changing the potential energy of the storage medium, characterized in that the storage chamber ( 10 ) is arranged floating in a storage medium supply and in the storage of the storage medium in the storage chamber ( 10 ) the storage chamber ( 10 ) and potential is converted into electrical energy and in the storage of the storage medium from the storage chamber ( 10 ) the storage chamber ( 10 ) and electrical energy is converted into potential energy.
  12. A method according to claim 10, characterized in that when sinking and / or floating the storage chamber ( 10 ) a connection ( 21 ) between storage chamber ( 10 ) and pumping and conversion device ( 20 ) and the pumping and conversion device ( 20 ) is held permanently on the surface of the storage medium supply.
  13. A method according to claim 10 or 11, characterized in that when sinking or floating the storage chamber ( 10 ) a connection device ( 31 ) between the storage chamber ( 10 ) and the holding device ( 30 ) is preloaded or relaxed.
  14. Method according to one of the preceding claims, characterized in that the means for storing the storage medium out of the storage chamber ( 10 ) required electrical energy from renewable energy is obtained.
  15. Method according to one of the preceding claims, characterized in that during the withdrawal of the storage medium from the storage chamber ( 10 ) the pumping device ( 20 ) from the converter ( 20 ) is driven.
DE102010034160A 2010-08-10 2010-08-10 Pumped-storage power plant, has storage chamber storing and releasing storage medium and formed in buoyant manner, and conversion unit generating electrical energy during storage of storage medium into storage chamber Withdrawn DE102010034160A1 (en)

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DE102010034160A DE102010034160A1 (en) 2010-08-10 2010-08-10 Pumped-storage power plant, has storage chamber storing and releasing storage medium and formed in buoyant manner, and conversion unit generating electrical energy during storage of storage medium into storage chamber
EP11006534A EP2418375A1 (en) 2010-08-10 2011-08-09 Device and method for storing electrical energy

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010050313A1 (en) 2010-11-05 2012-05-10 Wilhelm Ebrecht Pumped-storage power plant, has storage chamber storing and releasing storage medium and formed in buoyant manner, and conversion unit generating electrical energy during storage of storage medium into storage chamber
WO2012116956A1 (en) * 2011-02-28 2012-09-07 Universität Innsbruck Hydraulic energy store
DE102013205475A1 (en) * 2013-03-27 2014-10-02 Siemens Aktiengesellschaft Energy storage device for the temporary reversible storage of excess energy
CN106930252A (en) * 2017-04-24 2017-07-07 大连理工大学 A kind of Novel flush storage station water system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2927498A1 (en) * 1979-07-07 1981-01-22 Rainer Ing Grad Grueb Hydrostatic pressure driven power generator - has turbine in container inlet, driven by water which is then pumped from container by wind driven pump
DE3201507A1 (en) 1982-01-20 1983-07-28 Franz Eggs Method and device for obtaining electrical energy from kinetic energy of water flows
DE102006059233A1 (en) 2006-12-13 2008-03-20 Deutsches Zentrum für Luft- und Raumfahrt e.V. Energy storing in and storing out method for use in e.g. sea, involves permitting lifting body to be raised to smaller liquid depth in reverse direction for storing out energy so that energy is converted into electrical energy by converter
DE102008019504A1 (en) 2008-04-18 2009-10-22 Schöne, Heralt, Dr.-Ing. Power station with pumping reservoir has storage reservoir with a higher and underlying water-table linked via a water pipe and motor generators each coupled to a pumping turbine and fitted in underlying areas

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2927498A1 (en) * 1979-07-07 1981-01-22 Rainer Ing Grad Grueb Hydrostatic pressure driven power generator - has turbine in container inlet, driven by water which is then pumped from container by wind driven pump
DE3201507A1 (en) 1982-01-20 1983-07-28 Franz Eggs Method and device for obtaining electrical energy from kinetic energy of water flows
DE102006059233A1 (en) 2006-12-13 2008-03-20 Deutsches Zentrum für Luft- und Raumfahrt e.V. Energy storing in and storing out method for use in e.g. sea, involves permitting lifting body to be raised to smaller liquid depth in reverse direction for storing out energy so that energy is converted into electrical energy by converter
DE102008019504A1 (en) 2008-04-18 2009-10-22 Schöne, Heralt, Dr.-Ing. Power station with pumping reservoir has storage reservoir with a higher and underlying water-table linked via a water pipe and motor generators each coupled to a pumping turbine and fitted in underlying areas

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010050313A1 (en) 2010-11-05 2012-05-10 Wilhelm Ebrecht Pumped-storage power plant, has storage chamber storing and releasing storage medium and formed in buoyant manner, and conversion unit generating electrical energy during storage of storage medium into storage chamber
WO2012116956A1 (en) * 2011-02-28 2012-09-07 Universität Innsbruck Hydraulic energy store
US9617969B2 (en) 2011-02-28 2017-04-11 Universität Innsbruck Hydraulic energy store
DE102013205475A1 (en) * 2013-03-27 2014-10-02 Siemens Aktiengesellschaft Energy storage device for the temporary reversible storage of excess energy
CN106930252A (en) * 2017-04-24 2017-07-07 大连理工大学 A kind of Novel flush storage station water system
CN106930252B (en) * 2017-04-24 2019-12-17 大连理工大学 novel pumped storage power station water supply system

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