WO2006084748A1

WO2006084748A1 - Pressure tank

Info

Publication number: WO2006084748A1
Application number: PCT/EP2006/001256
Authority: WO
Inventors: Westphal Werner; Michael Liebich
Original assignee: Westphal Werner; Michael Liebich
Priority date: 2005-02-10
Filing date: 2006-02-10
Publication date: 2006-08-17

Abstract

Disclosed is a tank for pressurized liquid, comprising a multitude of individual elements in a common receptacle. Said elements are surrounded by the liquid and reduce their volume when the liquid pressure rises while increasing their volume again when the pressure drops, thus making it possible to simply create very safe pressure tanks also for very elevated pressures. Also disclosed is a corresponding method for storing pressurized liquid. Such a tank can be used particularly for storing electric power by pumping pressurized liquid into the tank, as an expansion vessel for a heating system, especially in a high-rise building, or for temporarily storing pressurized water for a water supply system.

Description

accumulator

The present invention relates to a storage for liquid under pressure, a method for storing liquid under pressure or energy and uses of the memory.

There are known storage devices that store hydraulic fluid under pressure in containers against the resilient force of gases, weights or springs. Often, the hydraulic fluid acts on a displaceable piston. The problem here are the sealing and leakage on the piston. When the resilient counterforce is generated by gases, the danger of explosion increases with increasing pressure. These circumstances had the consequence that so far no larger accumulators for high pressures were available.

The present invention has for its object to provide a memory for liquid under pressure, in particular for the temporary storage of energy, a method for storing liquid under pressure and uses of the memory, wherein a secure storage of liquid under high pressure and / or large Storage or liquid volumes is made possible with a simple design.

The above object is achieved by a memory according to claim 1, a method according to claim 20 or a use according to claim 21, 24 or 25. Advantageous developments are the subject of the dependent claims.

A basic idea of the present invention is that instead of a single resilient element or the like. many individual elements that reduce their volume with increasing fluid pressure and increase with decreasing pressure due to (elastic) restoring forces - especially automatically and / or independently again, and to store with pressurized or to be stored liquid - preferably in one common container - to surround. The individual elements are preferably resilient and / or elastically deformable and / or provided with an elastically deformable membrane or shell. It can be stored high forces or pressures that allow in particular a uniformity in the operation of engines and possibly also, for example, a restart of an engine.

An advantage is that the stored energy is maintained for several months without loss. In addition, a risk of explosion, which is the usual storage under high pressure, avoided. That is, if a single element fails, it will not cause an explosion or failure or total pressure loss of the entire memory.

Preferably, the elements are filled with gas and gas-tight, in particular provided with a gas-tight envelope. So a mixing of gas and the pressurized liquid - hereinafter also called hydraulic fluid - excluded.

The proposed solution allows a hydraulic supply of connected machines from a location that can advantageously be spatially separated from the machines to be supplied - for example, for manufacturing (as usual in pneumatic supply). It is possible to supply hydraulic pumps with hydraulic fluid, which is pressurized outside of manufacturing plants of internal combustion engines.

Further aspects, advantages, features and characteristics of the present invention will become apparent from the claims and the following description of preferred embodiments with reference to the drawing. It shows:

1 shows a proposed memory with many individual elements according to a first embodiment;

FIG. 2 shows a hydraulic fluid surrounding element of the memory according to the first embodiment; FIG.

Fig. 3 shows an element with a spring element according to a second

embodiment; 4 shows an element with two spring elements according to a third embodiment;

5 shows an element with one or more spring elements in the wall or shell of the element according to a fourth embodiment;

6 shows an element with one or more spring elements in the wall or shell of the element according to a fifth embodiment;

Fig. 7 shows an element with a deformable membrane according to a sixth

embodiment;

Fig. 8 shows a first arrangement with two memories;

9 shows a second arrangement with the memory;

10 shows a third arrangement with the memory;

11 shows a fourth arrangement with the memory;

12 shows a fifth arrangement with a memory according to a second embodiment;

13 shows an element with a spring element and a deformable membrane according to a seventh embodiment in the uncompressed state

Status;

FIG. 14 shows the element according to FIG. 13 in the compressed state; FIG.

FIG. 15 shows a memory according to a third embodiment; FIG.

FIG. 16 shows two containers of the memory according to the third embodiment; FIG.

17 shows the element according to the sixth embodiment in another, perspective and partially sectional view; and 18 shows a proposed memory according to a fourth embodiment.

Hereinafter, the same reference numerals will be used for the same or similar parts and components, with the same or equivalent advantages and characteristics, even if a repeated description is omitted.

It should also be noted that individual aspects, features, components and components of the individual embodiments can also be combined with one another as desired or, in particular, the proposed memory, can also be used for other purposes.

Fig. 1 shows in a schematic section a proposed memory 1 for storing liquid 2 under pressure. As a liquid 2 is basically any suitable hydraulic fluid such as oil, but preferably water or the like. used.

The reservoir 1 has a preferably spherical or cylindrical container 3. The memory 1 or container 3 has a plurality of elements 4 - hereinafter also called balls - on, which are preferably isolated, so separated from each other.

In principle, the elements 4 may be loosely received by the container 3. Preferably, however, the elements 4 are not shown by nets, spacers, cages or the like. at least substantially in desired positions or areas - in particular spaced from each other - held. The ele- ments 4 are at least partially (for example, they can rest with one side on the container inside or against each other), preferably completely surrounded by the liquid 2.

Preferably, spherical container 3, in particular, contains the elastic and / or gas-tight balls as elements 4. The elements 4 are preferably designed to be resilient and / or reversibly compressible or deformable. An explosion hazard is avoided by the preferably filled with gas balls 4 are adapted with their volume so that no dangerous explosion is triggered when a ball fails. It is true that the smaller the gas volume of a ball or element 4, the lower the risk of explosion. Due to the size and number of balls, therefore, the storage volume of liquid 2 and the risk of explosion can be influenced in a useful manner.

The elements 4 may be coupled together and / or connected, abutting one another and / or held in a cage or net in desired positions or areas in the container 3. However, the elements 4 may also be loosely received by the container 3.

The container 3 is filled in one part or area with liquid 2 and contains in a different part or area the individual elements 4. In principle, it is possible that the elements 4 - especially if they are loosely received by the container 3 - free float or float in the container 3 - depending on the displacement volume, for example, float up or settle at the bottom of the container 3 - or are arranged in defined areas or parts of the container 3. In all these cases, the container 3 is partially filled with the liquid 2 and partly with the elements 4. The container 3 thus contains the liquid 2 in one part and the elements 4 in another part or several parts or regions.

The elements 4 are each compressible by external pressure. Accordingly, the elements 4 reduce their displacement volume with increasing pressure of the liquid 2 and enlarge it again with decreasing pressure. For this purpose, the elements 4, for example, each filled with a gas and / or be provided with a spring element. This will be explained in more detail below with reference to various embodiments.

The container 3 preferably has uniform or identically constructed elements 4. However, the container 3 may also have different elements 4, which differ, for example, in terms of size, structure, printing behavior or compressibility, biasing pressure or the like. Thus, a desired dependence of the pressure of the liquid 2 on the amount of liquid 2 received by the reservoir 1 or container 3 can be achieved. In the illustrated example, the reservoir 1 or the container 3 has a schematically indicated supply line 5 for the supply of the pressurized liquid 2. In the illustrated example, the pressurized liquid 2 can also be released again via the supply line 5, for example in order to drive a machine, to generate electric current or the like. However, separate supply and discharge lines may be provided.

The reservoir 1 or container 3 is preferably provided with a pressure relief valve 6, which is indicated only schematically in Fig. 1.

2 shows in a schematic section a single element 4 according to the first embodiment of the embodiment surrounded by the liquid 2. The element 4 is preferably spherical and / or hollow. It is preferably filled with a compressible medium, in particular gas 7, an elastically deformable plastic or the like. In principle, the elements 4 can be filled with textile material, fibers and / or with liquid, gel, fabric or any other suitable material.

Alternatively, the elements 4 may each consist only of the elastically deformable medium or material, in particular an elastically deformable plastic or the like.

In principle, the elements 4 can each be hollow, solid or multi-layered.

In the first embodiment, the elements 4 each have a shell 8, the gas-tight, flexible and / or preferably elastically deformable - possibly even elastically stretchable - is. In general, this can be a membrane, outer wall or the like.

In the illustrated example, the elements 4 are each of multilayered design, in particular provided with a multi-layered shell 8. The shell 8 has an inner shell 9 and an outer shell 10, which may rest for example over the entire surface or - as in the illustration example - between them form a spherical shell-shaped gap 11, for example, with gas, a gel 12, a liquid or other suitable material can be filled. Preferably, both the inner shell 9 and the outer shell 10 are each at least liquid-tight, in particular gas-tight.

The shell 8 or inner shell 9 and outer shell 10 is or are preferably made of a suitable plastic. However, other suitable materials can be used. If necessary, the inner shell 9 and the outer shell 10 made of different materials or materials with different properties.

With increasing fluid pressure, the element 4 changes its volume and thus its displacement, so that correspondingly more liquid 2 in the memory 1 or container 3 can be accommodated. Conversely, at lower fluid pressure, the displacement volume of the element 4 is greater.

However, the aforementioned relation or pressure dependence only applies up to the fluid pressure at which the element 4 occupies its maximum volume. For example, when the gas 7 or other compressible medium or the like is biased to a certain pressure (biasing pressure), for example 1 MPa, under normal conditions and the sheath 8 or gap 11 is incompressible or at least not compressible below that pressure, Then, the element 4 begins to reduce its displacement volume only when the fluid pressure in the container 3 exceeds said biasing track. By appropriate selection of the biasing pressure or, for example, different biasing pressures for different elements 4 can - as already mentioned above - a specific or desired pressure behavior of the memory 1 can be realized.

When liquid 2 is supplied to the reservoir 1 or reservoir 3, the balls 4 are elastically deformed to reduce the displacement volume (not shown). The degree of deformation depends on the pressure of the liquid 2. If the pressurized liquid 2 is removed or discharged again, the deformed balls or elements 4 expand again. Due to the restoring forces or spring elasticity of the balls or elements 4, the liquid 2 is expelled under pressure again from the container 3 and is accordingly fed under pressure to a consumer. A particular advantage of the proposed memory 1 is that even if one element 4 fails, virtually no impairment of the function of the memory 1 occurs. Even if the elements 4 are filled, for example, with gas 7, there is no serious risk of explosion in this case too, since the amount of gas escaping in case of failure of an element 4 can be kept so low that no damage or impairment is to be expected.

In the following, further embodiments and variants are explained, wherein primarily essential differences are described. The previous versions are therefore otherwise appropriate or supplementary.

FIG. 3 shows a schematic section of a second embodiment of an element 4. The element 4 has a spring element 13, in particular in the form of a compression spring, on the inside, in particular in the cavity enclosed by the shell 8, if required, with a compressible medium. In contrast to the first embodiment, the envelope 8 is preferably formed in one piece here.

In the third embodiment, shown in a schematic section in FIG. 4, the element 4 has two spring elements 13 which act in particular in obliquely or perpendicularly extending directions. If necessary, each element 4 may also have more than two spring elements 13.

Fig. 5 shows in a similar schematic section an element 4 according to a fourth embodiment. Here, a spring element 13, for example a spring ring or a ring constructed of a plurality of springs or the like, is arranged in the casing 8 or wall of the element 4 or integrated therein or connected thereto. If necessary, the spring element 13 can also have a surface extension transverse to the plane of the drawing and optionally even form an elastic spherical shell, a net or the like in or on the shell 8.

In the fourth disclosed embodiment of FIG. 5, the element 4 is preferably again formed spherical. However, this is not essential. The section of FIG. 6 shows a fifth embodiment in which the element

4 or its shell 8 - in particular in the non-deformed or pressure-loaded Condition - is at least substantially plate, disc or egg-shaped or elliptical in cross-section, oval or flattened.

Alternatively, the elements 4 may for example be plate-shaped, rod-shaped or tubular or have a diamond-shaped cross-section. Alternatively or additionally, the cross section of each element 4 may remain the same over its length or vary over a length or longitudinal extent. Preferably, the elements 4 have a rotationally symmetrical shape - at least in the non-pressure-loaded state.

Alternatively, or in addition to the spring element 13, for example, a fabric, mesh or the like - in particular for reinforcement and / or modification of the elastic properties - attached to the shell 8 or be integrated into this, for example by injection, pouring, lamination, laminating, Gluing or bonding in any other way.

FIGS. 2 to 6 show the elements 4 in the uncompressed or deformed state.

7 shows, in a schematic section, a sixth embodiment of an element 4. Here, the element 4 has a flexible membrane 14, which can also be stretched in the surface extension, within the preferably rigid envelope 8. The envelope 8 has an opening 15, via which the membrane 14 communicates with the external pressure, that is, with the liquid 2, which is not shown in FIG. 7 for reasons of simplification. The membrane 14 forms a separation between the liquid 2 and a compressible medium arranged inside the element 4, such as gas 7 or the like.

For filling the element 4 or of the membrane 14 enclosed by the o at least on one side limited interior space with the compressible medium, such as gas 7, the element 4 preferably has a filling valve 16 or other connection.

It is generally noted that the shell 8 of the elements 4 - depending on requirements - may be formed either in one piece or in several parts. In particular, can the shell 8 or the element 4 may be composed of several parts and / or materials.

FIG. 8 shows, in a schematic, block diagram-like overview, a proposed arrangement or use of the memory 1 or a plurality of memories 1. Hereinafter, two memories 1 are always used in the description, but in principle only one memory 1 or are more than two memory 1 in the manner described usable. This also applies to the further arrangements and uses explained later.

A tank 17 contains the liquid 2, which can be supplied to the reservoir 1 under pressure via a pump 18. The pump 18 is for example driven by an electric motor 19 or the like. The supply of the liquid 2 can be carried out via corresponding valves 20, for example, switching valves, check valves or the like, and the supply lines 5 of the memory 1 preferably either in one or the other memory 1.

The valves 20 are preferably designed as manually operable check valves or gate valves and allow in particular, repair work or the like on one of the memory 1, regardless of the operation of the arrangement.

Optionally, a self-locking or other valve 21 in the common supply line 22 from the pump 18 to the storage 1 or its supply lines 5 is arranged.

The stored in the memory 1, pressurized fluid 2 and the energy corresponding thereto can basically be used for any purpose, such as to drive a machine for propulsion or transport, for the production of electric power or the like. For example, via a derivative, not shown, or by connection to the common supply line 22 or the leads 5 use of the pressurized liquid 2 for operating a machine, a generator or the like. In the illustration example, it is provided that the liquid 2 under pressure after opening the valve 21 and opening the valves 20 correspondingly drives the pump 18 and above, for example, the electric motor 19 as a generator, ie for generating electrical energy or of electric power is used. Accordingly, the arrangement shown in particular for temporary storage of electrical energy and / or short-term generation of electrical energy - for example, to cover demand peaks - used.

In the illustrated arrangement, each pressure relief valve 6, the memory 1 is preferably associated with an overflow 23. Alternatively or additionally, a return, not shown, may be provided in the tank 17.

Further, the stores 1 and 3 containers preferably each have a separate or a common sump 24 assigned to in case of a possible leakage leaking liquid 2, for example, hydraulic oil to catch. If necessary, a derivation, not shown, may be provided in the tank 17 here as well.

The memory 1 may be surrounded by a particular common housing 25.

Fig. 9 shows a second proposed arrangement or use of the memory 1, which is very similar to the first arrangement. Below, therefore, only essential differences compared to the first arrangement are explained in detail, so that the previous versions and explanations otherwise apply correspondingly or in addition.

If necessary, only one memory 1 is used in the second arrangement.

The pressurized fluid 2 is used here in particular for driving at least one machine 26, for example plastic syringes, extruders or the like, which is preferably operated in a pulsed manner. In the exemplary embodiment, several machines 26 are connected in parallel to the reservoir 1 via the preferably manually operable shut-off valve 20 and a separate drain 27 and optionally another, for example, electrically controlled valve 28.

The pressurized fluid 2 is used in the performance of work in the machine 26, in particular in the parallel connected machines 26, preferably relaxed to a very low pressure or the outlet pressure or normal pressure and returned via a return line 29 back into the tank 17.

In contrast to the first arrangement, the pump 18 is thus used only as a pump and not as a hydraulic motor for driving other components in the second arrangement. Accordingly, in particular in the second arrangement, for example, an internal combustion engine as a motor or drive 19 for the pump 18 can be used.

Fig. 10 shows a schematic representation of a third arrangement or use of the proposed memory 1 in conjunction with a hydraulic device, in particular a hydraulic cylinder 30. The hydraulic cylinder 30 is for example the lifting of a weight 31 and is - depending on the requirement - single or double acting educated. Accordingly, a piston 32 of the hydraulic cylinder 30 can be acted on one side or on both sides with pressurized liquid 2 either.

In the illustrated example, the required hydraulic pressure, that is, the pressurized fluid 2 can be optionally provided from the reservoir 1 or a pump 18. For example, the pump 18 is connected via a corresponding control and switching valve 33 to the hydraulic device via a hydraulic circuit 34. The memory 1 may be connected, for example, via a corresponding control valve 33, the control valve 20 shown or in any other suitable manner to the hydraulic circuit 34, for example, the hydraulic cylinder 30 in one direction or in both directions either alone by the fluid pressure of the memory 1 and / or is provided by the pump 18 to operate. If required, the reservoir 1 can also be supplied or filled with pressurized fluid 2 by the hydraulic pump 1, in each case without actuation of the hydraulic cylinder 30. Alternatively or additionally, the reservoir 1 can also serve for energy storage or temporary storage of the liquid 2, for example when braking the weight 31 during a lowering movement according to arrow 35. Instead of doing this as usual via a throttle, the pressurized liquid 2 can flow into it the memory 1 are passed, wherein the thereby increasing fluid pressure can lead to a desired deceleration. The GE- stored liquid 2 (stored energy) can be reused to assist, for example, the pump 18 in later operations of the hydraulic device - for example when lifting in accordance with arrow 36 - and thereby save energy.

11 shows a very schematic representation of a fourth arrangement or use of the proposed memory 1. The liquid 2 is here taken from a pump device 37 to the tank 17 and pressurized and stored in the memory 1. The pressurized liquid 2 then serves to operate a hydraulic motor 38, which drives a generator 39 for generating electrical energy or of electric current.

According to a preferred embodiment, the pumping device 37 is operated by water power. Particularly preferably, this is a tidal power plant, as shown in particular in DE 20 2005 006 122 Ul. However, it may also be another Tidenkraftwerk, wave power plant, running power plant or the like. The particular advantage of the proposed arrangement or use is that by means of the memory 1 - of course, a plurality, in particular parallel-connected memory 1 - an intermediate storage is possible, for example, the power generation or generation of electrical energy to comparative and / or only coverage of Peak loads - so short term - use.

If necessary, as the liquid 2, the water driving the pumping means 37 can also be used directly. In this case, the tank 17 may also be omitted, depending on the design and layout of the arrangement.

According to one embodiment, the pumping device 37 may also be a wind power station or windmill or the like, for example, a pump, in particular with a variable, optionally speed-dependent translation drives to the liquid 2 from the tank 17 in the To promote memory 1 and put it under pressure. The variable ratio can generally also be used independently of a wind turbine. According to another embodiment variant, the pump device 37 can also be driven by an internal combustion engine or another engine. This Ausftihrungsvariante is explained in more detail with reference to the fifth arrangement or use of the memory 1.

5 shows a schematic perspective view of the fifth arrangement or use of the proposed memory 1, which according to a second embodiment is preferably at least substantially cylindrical here. The arrangement preferably forms a module or a structural unit, wherein in particular also a cover or the like, not shown, can be provided. The arrangement shown is particularly mobile or transportable, but can also be used only for stationary purposes ke.

The pumping means 37 in the fifth arrangement comprises in particular an internal combustion engine which drives a pump which requires liquid 2 from the tank 17 via the reservoir 1 and the hydraulic motor 38 back into the tank 17, so that the hydraulic motor 38 generates the generator 39 for power generation can drive. Preferably, a controllable throttle, not shown, a braking device or the like associated with the hydraulic motor 38 to regulate the power generation or the liquid flow through the hydraulic motor 38 in the desired manner, without changing the operating point of the engine or the speed of another drive have to. Rather, the internal combustion engine or other drive is preferably operated at the optimum operating point and thereby particularly economically. The excess energy is stored in the form of pressurized liquid 2 in the memory 1.

Alternatively, it is also possible to operate the pumping device 37 only for refilling the accumulator 1-that is to say without simultaneous power generation.

In addition, an accumulator 40 is preferably provided for temporarily storing the electrical energy generated by the generator 39. The electrical intermediate storage in combination with the intermediate storage of the pressurized fluid 2 allows a further improvement or optimization of the operating procedure to the internal combustion engine or another Engine for operating the pumping device 37 to operate particularly economically.

If necessary, the fifth arrangement can also be used or combined together or in combination with an emergency generator, not shown, in particular to enable a network-independent power supply, such as a household, a house, a building or the like.

Fig. 13 shows a schematic section of a proposed element according to a seventh embodiment. Such elements 4 are used in particular in the memory 1 and cylindrical container 3 according to the second embodiment. Particularly preferably, a plurality of elements 4 are received axially one behind the other and / or radially next to one another from the container 3.

In the seventh embodiment, the element 4 has a membrane 14 which operates against a spring element 13, in particular a helical spring. The spring element 13 is preferably provided at its end coming into contact with the membrane 14 in contact with a particular cup-shaped protective element 41.

Fig. 13 shows the element 4 in the non-compressed state, ie with full displacement volume and non-compressed spring element 13. As needed, the spring element 13 is already biased to a desired spring force (corresponds to a biasing track) in this state.

Fig. 14 shows the element 4 in a comparable section, but with compressed spring element 13, that is, due to the fluid pressure already reduced displacement volume. The pressure of the pending liquid, which is not shown here and acts on the membrane 14, the spring element 13 has axially compressed and correspondingly the membrane 14 and the protective element 41 axially displaced.

The liquid exchange with the environment via the opening 15, which is formed in the preferably rigid shell 8 of the element 4. The shell 8 is preferably constructed of two substantially cylindrical or cap-shaped parts which are secured to flanges 42 via the membrane 14 held therebetween. are bound. This can be done for example by gluing or in any other suitable manner.

The interior of the element 4 containing the spring element 13 may, as required, additionally be filled with a compressible medium, such as gas or the like, via the optimum filling connection 16 or the like.

The compression of the spring element 13 depends on the upcoming fluid pressure. Accordingly, with increasing liquid pressure more liquid 2 can be received and vice versa with decreasing pressure, the liquid 2 can be delivered under pressure again, with increasing release of pressure decreases.

Fig. 15 shows a schematic, perspective view of a third embodiment or arrangement of the proposed memory 1. Here are several preferably tubular or cylindrical container 3, each containing a plurality of elements 4, in particular parallel to a common supply and / or discharge 5 are connected. In particular, in this case a modular construction is made possible by corresponding holders 42, which hold the containers 3 and interconnect them.

FIG. 16 shows a detail of two containers 3, wherein a container 3 is shown cut away for illustrative purposes. As shown for the cut-open container 3, each container 3 preferably contains a plurality of elements 4, which may be at least substantially spherical in shape, but in principle also cylindrical or otherwise formed in the representation example.

The elements 4 are preferably at least substantially according to the sixth embodiment - as shown in Fig. 7 - formed. 17 shows a perspective sectional view of a preferred construction of the element 4 in the sense of the sixth embodiment.

The preferably rigid shell 8 is formed, in particular, from two hemispherical parts which are connected to one another via corresponding flanges 43, in particular are screwed. The membrane 14 is preferably clamped between the flanges 43. In the illustration according to FIG. 17, the egg is - U -

ment 4 and its membrane 14 shown in the uncompressed state. The element 4 has its largest displacement volume in this state. Only with increasing or even existing fluid pressure, not shown, about the opening 15 on the diaphragm 14 pending liquid 2 to a deformation of the membrane 14 - in the illustration of FIG. 17 from the left to the right side - against the force or cause the (increasing) pressure of the enclosed gas in the element 4 or by the membrane 14, not shown in Fig. 17, whereby the displacement volume of the element 4 is correspondingly reduced.

Fig. 18 shows a schematic sectional view of a fourth embodiment of the proposed memory 1. In the container 3 tie rods or tie rods 44 are arranged here, which ensure a high stability of the container 3. In particular, this allows a very simple, quasi-modular construction of the container 3. The tie rods 44 namely namely such space lattice particular or aligned that a field by field enlargement of the container 3 in each direction in space without recalculation of the container 3 is possible. In particular, the tie rods 44 extend in all three mutually orthogonal spatial directions. The container 3 is then preferably at least substantially parallelepiped or even cube-shaped.

In the fourth embodiment, the memory 1 or container 3, if necessary, also have inwardly curved wall portions, as shown in Fig. 18. This increases the stability or pressure resistance of the container 3.

In principle, tie rods 44 can also be used in any other, virtually arbitrary shape of the container 3 for its stabilization or to increase the compressive strength.

If necessary, the tie rods 44 can also serve to position the elements 4 at specific locations or in specific areas.

According to another embodiment, not shown, the elements 4 may also be formed by foam-like structures, in particular balls or the like, wherein the material is then formed closed porous. According to an embodiment variant, not shown, the memory 1 can also be used as an expansion vessel for a heating system, in particular for tall buildings, particularly preferably in a skyscraper or the like.

According to another embodiment variant of the proposed memory 1 is also used for Zwischenspeicherang of water as a liquid 2 under pressure, for example, for a water supply system, not shown, can be used.

If necessary, the proposed memory 1 can also be arranged or buried under the surface. In addition, it is also possible to arrange the proposed memory 1 under water, for example, to sink in a river or lake or in the sea.

According to a further Ausrührungsvariante the memory 1, in particular the container 3, with a cooling device, not shown, in particular outside cooling fins or other heat radiation surfaces, for cooling, in particular the liquid 2, provided.

Claims

claims

A reservoir (1) for storing fluid (2) under pressure, the reservoir (1) having a reservoir (3) with or for the fluid (2) and with many individual elements (4) suspended from fluid (1). 2) are surrounded and reduce their volume with increasing liquid pressure and increase again with decreasing pressure.

2. Memory according to claim 1, characterized in that the container (3) is filled in one part with liquid (2) and in another part contains the individual elements (4).

3. A storage according to one of the preceding claims, characterized marked, that the container (3) has a supply line (5) or a plurality of supply lines (5) for

Liquid (2), which may also be a derivative or can.

4. Storage according to one of the preceding claims, characterized in that the container (3) with a pressure relief valve (6) or more pressure relief valves (6) is provided.

5. Storage device according to one of the preceding claims, characterized in that the container (3) is substantially spherical, cylindrical or cuboid.

6. Storage device according to one of the preceding claims, characterized in that the container (3) consists of steel and / or is internally provided with tie rods (44).

7. Memory according to one of the preceding claims, characterized in that the memory (1) each having a plurality of elements (4) containing container (3), which are in particular parallel, alternately and / or optionally usable.

8. Storage according to one of the preceding claims, characterized in that the elements (4) of liquid (2) in the container (3) are partially or completely surrounded.

9. Memory according to one of the preceding claims, characterized in that the elements (4) are formed resiliently and / or reversibly compressible or deformable.

10. Memory according to one of the preceding claims, characterized marked, that the elements (4) are coupled and / or interconnected and / or held in position in a cage or net.

11. Memory according to one of the preceding claims, characterized in that the elements (4) each formed hollow and in particular filled with a compressible medium, such as gas (7), liquid, gel (12), tissue and / or an elastically deformable plastic are and / or each have at least one spring element (13) in the interior or in its shell (8) or wall.

12. Memory according to one of the preceding claims, characterized in that the elements (4) are hollow, solid and / or multi-layered.

13. Memory according to one of the preceding claims, characterized in that the elements (4) each consist of several parts, in particular where these parts are connected by positive engagement, bonding and / or welding.

14. Memory according to one of the preceding claims, characterized in that the elements (4) each have a sheath (8), membrane (14) or Außenwan- fertil plastic or steel.

15. Memory according to one of the preceding claims, characterized in that the elements (4) each have a gas-tight, flexible and / or preferably elastically deformable sheath (8), membrane (14) or outer wall.

16. Memory according to one of the preceding claims, characterized in that the elements (4) are at least substantially plate, disc, one or spherical and / or circular in cross-section, elliptical, diamond-shaped, oval or flattened and / or that the cross-section of each element (4) remains the same over a length or rotates about an axis or varies over a length or longitudinal extent.

17. Memory according to one of the preceding claims, characterized in that the elements (4) are biased to a uniform or at least partially different biasing or minimum pressure.

18. Storage device according to one of the preceding claims, characterized in that the container (3) is filled in one part with liquid (2) and in another part contains the elements (4) which are resilient and the liquid (2 ) are surrounded in the container (3), wherein the resilient elements (4) reduce their volume with increasing pressure and increase their volume again with decreasing pressure, wherein the container (3) one or more leads (5), which are also derivative can, has.

19. A store according to one of the preceding claims, characterized in that the store (1) for liquid pressures of at least 10 MPa, in particular 30 MPa or more and / or for the alternating intake and delivery of at least 1 m ³ , in particular 10 m ³ , most preferably 100 m ³ or more, of liquid (2) is formed.

20. A method for storing liquid (2) under pressure, wherein the liquid (2) is a container (3) with a plurality of independently elastically compressible elements (4) is supplied, so that the elements (4) during the supply with increasing liquid pressure reduce their displacement volume, and wherein the liquid (2) due to Rückstellkräfiten the elements (4) the container (3) is removed under pressure again.

21. Use of a memory (I) according to any one of claims 1 to 19 for the storage of electrical energy, wherein when storing the electrical energy for pumping liquid (2) under pressure in the memory (1) is used.

22. Use according to claim 21, characterized in that for recovering electrical energy liquid (2) is removed under pressure the memory (1) and used to drive a generator (39).

23. Use according to claim 21 or 22, characterized in that the memory (1) for storing electrical energy of a water, wind, solar, wave or tidal power plant and / or for the temporary storage of electrical energy is used.

24. Use of a memory (1) according to one of claims 1 to 19 as an expansion vessel for a heating system, in particular in a skyscraper.

25. Use of a memory (1) according to one of claims 1 to 19 for temporary storage of water under pressure for a water supply system.