DE102015113951A1 - Provisional Patent Application Water Ring Energy Storage - Google Patents

Abstract

Device for storing energy by means of kinetic water energy, preferably for short-term energy storage for the most efficient energy storage, in particular the provision of primary and / or secondary control energy and / or peak load energy and / or peak current buffering and / or emergency power supply, characterized that at least one kinetic ring water storage = ring pipeline = fluid flywheel, with water moving in the pipeline, with low frictional resistance and with a large pipeline cross-section and thus large amount of water, a hydraulic and / or mechanical energy supply and discharge via at least one or allows several turbines.

Description

TECHNICAL FIELD OF THE INVENTION

The invention is in the field of bulk storage for energy storage and buffering and dispensing

STATE OF THE ART

In Germany and throughout the world many pumped storage power plants are being used e.g. operated in the place Glems. Pumped-storage power plants such as the one in Glems with an output power of 90 MW for 6.5 hours by means of two Franz turbines (energy storage of 585 MWh) are currently largely used for regional primary fine regulation of the grid current. Disadvantage of these systems is that they have to be located on geographical locations with significant differences in height (potential storage energy) usually on low mountain ranges or mountains, which is equivalent to a north-south divide in Germany. Especially where there is a lot of renewable energy, especially wind energy with varying supply, these memory are not available because of these geographical conditions.

It even goes so far that one directs the energy up to Norway over DC high-voltage roads, in order to store these there in large pumped storage power plants. Here are flow turbines after the St.d.T., such. the adjustable Kaplan turbine used.

In river hydroelectric power plants, a regionally offered gradient is used for energy generation by means of flow turbines as well as the controllable Kaplan turbine. A power storage can only be carried out in conjunction with a reservoir, which must be dammed up. This also depends on the geography and environmental conditions (reservoir and watercourses).

In tidal power plants, where the tidal current of the sea works in principle like a hydropower plant, energy can be produced in one or two directions of flow (rising and falling of the tides). There is some scope for regulation, but actual storage is not possible. This is also dependent on geography and environmental conditions (river with high tides).

OBJECT OF THE INVENTION

] Energy storage system (up to the MW range) in particular for regional decentralized storage and grid feed for short-term peak current and primary or secondary grid control (similar to a peak load power plant of the storage power plant like that in Glems) regardless of the geographical location and / or special environmental conditions (mostly possible at wind turbine sites).

The energy storage system can also be used as an emergency power supply system, for example in the short-term range, up to a few hours. to serve security relevant.

SOLUTION

The object of the invention is to provide a device and method for energy storage, which is independent of regional geographical requirements (eg height difference) or environmentally relevant conditions (river or Naturierung).

This is done by means of a pipeline ring water storage tank with kinetic water flow = ring pipe, which with rotating in the pipeline water with a large cross-section and thus large amount of water and low frictional resistance, with hydraulic energy supply and extraction with a turbine, preferably a propeller turbine, with how a Franzis turbine and a combined engine / generator works. The shape of the energy storage system is minimized flow resistance, preferably round or in an oval shape. This ring buffer can also be regarded as a fluid flywheel.

Advantages over the prior art:

• 1. No difference in altitude required from a low mountain range, or no watercourse needed, so anywhere placeable
• 2. Only soccer field large area necessary (underground, above ground, floating / floating on or in the water)
• 3. Decentralized peak load coverage (control energy) and storage near the power generator z.b. Wind turbines and solar systems or close to consumers possible
• 4. If necessary Faster performance adjustment (higher reaction speed) possible with variable pitch propeller
• 5. Efficiency the better the earlier the energy is taken again
• 6. Combination with pumped water storage power plant possible
• 7. Combination of the memory for short and / or long-term storage of heat and / or cold, especially for heat pump systems

DESCRIPTION OF THE INVENTION

Application: The devices and methods of the invention serve as an energy storage system (up to the MW range possible) for a regional decentralized storage and grid feed for short-term peak current and the primary / secondary grid control.

Short-term energy storage (1 to several hours) for grid stabilization (primary grid control) or caching / buffering of peak load electricity from solar and wind and ocean energy and from other power plants or for peak load energy delivery are currently provided by a few medium to large decentralized pumped storage power plants realized. High transmission distances and losses are the result.

By virtue of the short-time energy store according to the invention, a higher market remuneration and / or better grid stability, in particular for wind energy plants, can be achieved, if appropriate, for more constant and safer power supply. Also as an emergency power supply for important, e.g. safety-relevant facilities, this is usable.

Preferably, the energy storage for short-term energy storage for the most efficient energy storage (low friction losses over short storage time).

 There is no difference in height from a low mountain range, or no watercourse needed, so anywhere placeable.

 As Mittelgroßer memory only football field large area necessary. Arrangement Underground, Above Ground, Floating / Floating on or in the water.

Decentralized peak-load coverage (primary and / or secondary control energy) and storage in the vicinity of the power generator, e.g. Wind turbines and solar systems or close to consumers possible.

Fast performance adjustment (higher reaction speed) possible with variable pitch propeller.

 The efficiency is the better the earlier the energy is taken back (lowest possible friction losses).

 Combination with pumped water storage power plant possible.

Combination of the storage for short and / or long-term storage of heat and / or cold, especially for heat pump systems.

Device for storing energy by means of kinetic water energy, preferably for short-term energy storage for energy storage as efficient as possible, in particular the provision of primary and / or secondary control energy and / or peak load energy and / or peak current buffering and / or emergency power supply,
characterized in that at least one kinetic ring water storage = ring pipeline = fluid flywheel, with water moving in the pipeline, with low frictional resistance and with large pipeline cross-section and thus large amount of water, a hydraulic and / or mechanical energy supply and discharge over at least one turbine allows.

• a) zumindest über einen Motor, bevorzugt elektrischen Motor, eine Turbine angetrieben wird, welche Energie in zumindest einen Kinetischen Ringwasserspeicher = Ring-Rohrleitung = Fluid-Schwungrad mit in der Rohrleitung sich bewegendem Wasser (in der Rohrleitung rotierendem Wasser) einspeist (Energiezufuhr)
• b) dass, zumindest ein Kinetischer Ringwasserspeicher = Ring-Rohrleitung = Fluid-Schwungrad, mit geringem Reibungswiderstand und mit großem Rohrleitungs-Querschnitt und dadurch großer Wassermenge den Großteil der kinetischen Energie für eine gewisse Zeit, bevorzugt für < 12 Std, besonders bevorzugt < 4 Std, ganz besonders bevorzugt < 1 Std, zumindest zum Teil, zwischenspeichert/-puffert
• c) eine Energie-Entnahme und Konvertierung über zumindest eine Turbine und elektrischen Generators ermöglicht.

Method for storing and converting energy by storing kinetic water energy, preferably for short-term energy storage for efficient energy storage as possible, in particular the provision of primary and / or secondary control energy and / or peak load energy and / or current peak buffering and / or emergency power , after the following steps characterized in that

• a) at least one motor, preferably electric motor, a turbine is driven, which energy in at least one kinetic ring water storage = ring pipeline = fluid flywheel with in the pipeline moving water (in the pipeline rotating water) feeds (energy supply)
• b) that, at least one Kinetic ring water storage = ring pipeline = fluid flywheel, with low friction resistance and large pipe cross-section and thus large amount of water, the majority of the kinetic energy for a certain time, preferably for <12 hours, more preferably <4 Std, most preferably <1 h, at least in part, cached / buffered
• c) enables energy extraction and conversion via at least one turbine and electric generator.

There are 2 different technical variants.

Essential features of embodiment 1 are:
Kinetic annular water storage = ring pipeline, with water rotating in the pipeline, with low frictional resistance, with a large cross-section and therefore a large amount of water, possibly with a bionic pipe bend shape for low Friction resistance (Rechenberg) and hydraulic and / or mechanical energy extraction, preferably for short-term energy storage for energy storage as efficient as possible. This can also be considered as a fluid flywheel.

Furthermore, the turbine can be permanently installed in the pipeline or retracted / swiveled into the pipeline system and the flow energy can be converted into electrical energy by means of a generator.

 Use, supply and storage of electrical energy in the form of the kinetic energy of water (moving water generates energy as in a pumped storage power plant, except that the energy potential is not stored in position energy, but in the flow energy). The water flow rates are about 0-30 m / sec, preferably 5-20 m / sec.

 Preferably, such an energy storage is particularly interesting for primary and secondary control energy and as a short-term energy storage for renewable energy. It is particularly advantageous that such energy stores are also underground, e.g. can be invisibly installed under sports facilities such as sports fields or other buildings. Above ground, the cost may be lower, if the pipeline is surrounded by a mound and thus, of course, can also be planted and / or landscaped (excavated on-site recycling).

At the same time, such energy stores can also advantageously be combined as a position energy store, e.g. in which this e.g. act as water reservoir of pumped storage power plants or river power plants. Also, this energy storage in a water storage tank (reservoirs) and / or waters (sea), for. Be integrated floating / floating. This is e.g. Applicable to offshore wind farms or ocean power generation plants.

The duration of the energy storage is in the range of minutes, hours possibly up to days.

In particular, the peak load energy supply and storage of cost-effective excess energy is advantageously feasible.

Furthermore, the network stability (primary and secondary network control) can be easily realized because a high reaction rate is possible.

Inexpensive production of large cross-section pipelines of about 2-20 m in diameter, in particular, by means of fiber-reinforced materials, e.g. Concrete, epoxy resins, polyester resins, polyurethanes, polymeric plastics such as thermoplastics, reinforced with fibers, in particular glass, carbon, basalt, Kevlar or thermoplastic fibers. Furthermore, conventional materials made of steel and light metals can be used for this purpose. Particularly advantageous are textile and / or steel fiber reinforced concrete components.

In particular, modular pipelines with stiffening elements such as arch structures, stiffening rings / ribs / flanges, lattice structures, bionic structures, sandwich structures, 3D support structures, such as 3D warp knits, 3D foams, 3D nonwovens and the like, can be advantageously used.

Production of a very smooth inner pipe surface by means of coatings and / or inliners, preferably of plastics with a very smooth surface (inliners may for example be glued and / or attached with under / overpressure, as in the case of heating oil tanks, for example).

Essential features of variant 2 are:
Infeed and removal of energy by means of integrated Y branches and / or Y-branchings attached to the ring line, so that the energy supply and / or removal device is preferably powered by means of turbines, eg gyros, propellers (such as Seagen), Franzis, Pelton, High efficiency fish-finned, ring-type turbines, preferably turbines with adjustable turbine blades / fins for power regulation with water flow. Also, the energy supply can be realized by means of high pressure, for example, by rapidly flowing water and vice versa by means of a baffle element and eg Pelton turbine.

Also conventional high-pressure pumps for fluid supply can be used (water jet acceleration of the water)

Also, a pipe branch in the form of a movable flap / flow-favorable element can be realized. Also, flow-favorable and / or pressure-loss-poor cross-sections can be used at least partially in the region of the branches.

Also, multiple ring pipes can be combined together, e.g. operated at different speeds and, if necessary, interconnected or spatially integrated (several ovals on a field, such as sports field, grandstand, if necessary, on embankment of this field)

Inexpensive production of the turbine and the pipelines, in particular by means of fiber reinforced materials such as e.g. Concrete, epoxy resins, polyester resins, polyurethanes, polymeric polymers, such as thermoplastics, reinforced with fibers, in particular glass, carbon, basalt, Kevlar or thermoplastic fibers in woven, knitted or nonwoven form. Furthermore, conventional materials made of steel and light metals can be used for this purpose, as you for example. Foundation tripods used in wind turbines or oil / gas pipelines. Theoretically, a closed ring pipeline could also be used.

In particular, the pipelines with stiffening elements such as arch structures, stiffening rings / ribs / flanges, lattice structures, bionic structures, sandwich structures, 3D support structures, such as 3D knitted fabrics, 3D foams, 3D nonwovens and the like can be advantageously used.

Production of a very smooth inner surface of the pipeline by means of coatings and / or inliners, preferably of plastics, ceramics, glass, with a very smooth surface (inlays may for example be glued and / or applied with under / overpressure, as for example heating oil tanks). Also, such as e.g. Plastic inliner have a bionic structure which reduces the Reibungswiederstand.

Segementförmige, modular components are with respect to the transport and installation of great importance to reduce the manufacturing / construction costs.

Use of components with drag generation such as e.g. Fluid collection flaps.

Also, multiple turbines may be arranged, e.g. for simultaneous energy supply and energy extraction.

Combination of the storage for short and / or long-term storage of heat and / or cold, in particular for heat pump systems and / or heat exchanger systems.

Below exemplary embodiments are listed in the drawings, which can be freely combined with the features in the text.

The invention will be explained below with reference to examples and drawings. Show it

1 : Application variant 1 without pipe branch

2 : Application variant 2 with pipe branch

Claims (10)

Device for storing energy by means of kinetic water energy, preferably for short-term energy storage for the most efficient energy storage, in particular the provision of primary and / or secondary control energy and / or peak load energy and / or peak current buffering and / or emergency power supply, characterized that at least one kinetic ring water storage = ring pipeline = fluid flywheel, with water moving in the pipeline, with low frictional resistance and with a large pipeline cross-section and thus large amount of water, a hydraulic and / or mechanical energy supply and discharge via at least one or allows several turbines. Apparatus according to claim 1, characterized in that the turbine permanently installed in the pipeline or retracted / swiveled into the pipeline system and the flow energy can be converted into electrical energy by means of a generator. Device according to one of the preceding claims, characterized in that the supply and removal of energy by integrated and / or attached to the ring-pipe Y-branches takes place and the energy supply and / or extraction device preferably by means of turbines, eg gyroscope , Propeller (such as Seagen), Franzis, Pelton, fish-fin, ring rotor turbines, with high overall efficiency, preferably turbines with adjustable turbine blades / fins for power regulation and / or by means of high-pressure energy supply ( for example by water flowing in quickly (water jet acceleration of the water), eg by means of Pelton turbine or conventional high-pressure pumps and, for example, removal by means of a stowage element). Device according to one of the preceding claims, characterized in that the water flow velocities in the annular pipeline about 0-30 m / sec, preferably 5-20 m / sec amount. Device according to one of the preceding claims, characterized in that a pipe branch in the form of a movable flap / flow-favorable element are realized and at least partially in the region of the branches flow-favorable and / or low pressure loss cross sections are used (eg fluid removal flaps). Device according to one of the preceding claims, characterized in that a plurality of turbines can be arranged, for example, for simultaneous energy supply and energy extraction and / or multiple ring pipelines are combined, for example, operated at different speeds and possibly interconnected or Spatially integrated (eg several ovals on a field, such as sports field, grandstand, if necessary, at embankment of this field) Device according to one of the preceding claims, characterized in that a cost-effective production of pipes with a large cross-section of about 2-20 m diameter in particular, by means of fiber-reinforced materials such as concrete, epoxy resins, polyester resins, polyurethanes, polymers plastics such as thermoplastics reinforced with fibers , in particular glass, carbon, basalt, Kevlar or thermoplastic fibers and / or conventional materials made of steel and light metals and / or particularly advantageous are textile and / or steel fiber reinforced concrete components and which in particular modular pipelines, if necessary with stiffening elements such as arch structures, stiffening rings / ribs / flanges, lattice structures, bionic structures, sandwich structures, 3D support structures such as 3D knitted fabrics, 3D foams, 3D nonwovens and the like. Device according to one of the preceding claims, characterized in that the production of a very smooth inner pipe surface by means of coatings and / or inliners, preferably made of plastics with a very smooth surface (hose inliner can eg glued and / or with under / overpressure as in eg Fuel oil tanks be attached). Device according to one of the preceding claims, characterized in that a combination of the memory, even for short and / or long-term storage of heat and / or cold, is used in particular for heat pump systems and / or heat exchanger systems. Method for storing and converting energy by storing kinetic water energy, preferably for short-term energy storage for efficient energy storage as possible, in particular the provision of primary and / or secondary control energy and / or peak load energy and / or current peak buffering and / or emergency power , after the following steps characterized in that a) at least one motor, preferably electric motor, a turbine is driven, which energy in at least one kinetic ring water storage = ring pipeline = fluid flywheel with in the pipeline moving water (in the pipeline rotating water) (b) that, at least one kinetic ring water storage = ring pipeline = fluid flywheel, with low frictional resistance and with large pipeline cross-section and thus large amount of water, the majority of the kinetic energy for a certain time, b preferably for less than 12 hours, more preferably <4 hours, most preferably <1 hour, at least in part, cached / buffered c) enables energy extraction and conversion via at least one turbine and electric generator.

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