DE102021105545A1 - Liquid tank from a modified sea container, cistern system, precipitation collection system, manufacturing process and uses - Google Patents

Abstract

The invention relates, among other things, to a liquid tank (100, 200) made from a modified sea container (1) with profiled walls, a base plate (3) and a cover plate (4), the liquid tank (100, 200) for fluid-tight encapsulation of the sea container (1) fully sealed with plastic on the inside and outside. The invention solves the problem of providing cheap and resilient liquid tanks, especially for use in underground cistern systems or precipitation collection systems, which facilitate water management and dealing with increasingly extreme weather phenomena, not only in the agricultural sector.

Description

The invention relates to a liquid tank made from a modified sea container with profiled walls, a base plate and a cover plate according to the preamble of claim 1.

With the increasing change in the basic climatic constants, in particular the increasingly frequent extreme weather conditions such as prolonged drought or torrential rain events, the infrastructures currently used, such as sewage systems or flood areas, are reaching their capacity limits. The chronic water shortage alternating with flooding is also increasingly presenting agriculture with new challenges and creating a need for intelligent water management solutions.

Common dewatering systems such as collecting basins or intermediate water reservoirs in underground sewage systems are generally known, but they require intensive planning, construction work, are expensive and difficult to retrofit.

Loadable liquid tanks made from modified sea containers for catching liquids occurring during drilling work are known from the prior art, the sea containers being sealed on the inside in a liquid-tight manner for this purpose by inserting a bladder or a corresponding wall. Such liquid tanks show, for example, the U.S. 2010 025 407 A1 . These liquid tanks are used to set up temporary collection containers and are used at boreholes to collect contaminated liquids and then be able to dispose of them properly.

Against the background of the prior art mentioned, it is the object of the invention to provide a liquid tank that can be produced inexpensively, in particular for collecting and providing rainwater, which can be built in for permanent use at one location.

The task is also to provide appropriate cistern systems and precipitation collection systems for collecting rainwater or other fluids.

The objects are achieved by a liquid tank with the features of claim 1, a cistern system with a corresponding liquid tank according to claim 11 and a precipitation collection system according to claim 13. The object is also achieved by a method for producing a liquid tank suitable for the aforementioned purposes with the features Claim 15 and a set for modifying a sea container to a liquid tank according to claim 19. The invention also includes the use of a sea container for the above purposes.

According to the invention, a liquid tank is made from a modified sea container which has profiled walls, a base plate and a cover plate, the liquid tank being sealed over its entire surface on the inside and outside for fluid-tight encapsulation of the sea container.

The encapsulation protects the sea container from internal and external influences. Due to the encapsulation on the inside, a liquid-tight volume for storing fluids in liquid and/or gaseous form can be provided without the sea container reacting corrosively with the fluids, for example. Due to the encapsulation on the outside, the liquid tank can also be protected from corrosive external influences.

In contrast to the use of paints or similar, sealing means sealing with a wall thickness of >5 mm, preferably >10 mm.

Advantageous developments and further features of the invention result from the dependent claims and the following description.

It is advantageous if the inside and/or outside encapsulation or sealing of the liquid tank is effected by a one-part or multi-part plastic covering.

The inside and/or outside plastic paneling can be formed, for example, from plastic plates that are brought into contact with the ceiling, floor and side walls of the sea container on the inside or outside and welded together in a fluid-tight manner. These plastic plates can be composed of a large number of plastic plate segments of smaller size, for example by using a set of plastic plate segments of a standard size are arranged next to each other and welded at the abutting edges to form a plastic plate until the desired size of the plastic plate is reached. This can be done before installing the plastic panels in or on the sea container or directly during the installation of individual plastic panel segments on or in the sea container.

The plastic panels or plastic panel segments can also be connected directly to the ceiling, floor and side walls of the sea container glued, welded or otherwise connected.

With appropriate plastic cladding made of plastic panels, sea containers of different dimensions can be easily and cost-effectively converted into liquid tanks.

In this case, only one internal volume for receiving liquid can be formed in the sea container. However, the sea container can also be expanded on the inside into several volumes that are fluidly connected to one another or preferably separated from one another for the purpose of storing different fluids by using, for example, additional partition walls made of plastic plates.

It is expedient if the liquid tank has at least one opening for the passage of the fluid located in the liquid tank, the boundary edge of the or each opening formed by the opening also being sealed in particular by a plastic. In other words, the boundary edge or the boundary edges of the or each opening of the liquid container can be sealed by a boundary edge seal. In this way, the entry of possibly decomposing liquids or decomposing environmental influences between the sea container and the internal and/or external sealing can be avoided.

In an advantageous development of the invention, a connecting line designed as a plastic tube can be introduced into the at least one opening of the liquid tank, which is preferably welded to both the inner and the outer seal. The connecting line serves in particular as an interface for filling or draining fluids from the liquid tank. In this case, the connecting line can act as a boundary edge seal.

To improve the insulating effect between the liquid in the liquid tank and the environment, a gas can be enclosed between the inner seal and a wall (profiled side walls, ceiling and/or floor) of the sea container and/or the outer seal and a wall of the sea container. The gas can be ordinary air or a specially selected gas such as an inert gas.

Alternatively, an intermediate space between the inner seal and a wall of the liquid tank and/or the outer seal and a wall of the liquid tank (in the technical sense) can be vacuumed. As a result, the insulating effect can be further increased.

To improve the stability and in particular to protect the seal of the liquid tank from damage, it is advantageous if the inside and/or outside plastic plates used to seal the sea container are designed as hollow chamber plates. Twin-wall panels are panels that form individual chambers. The plates can have a honeycomb structure, for example. As a result, the strength of the inside and/or outside sealing can be increased. Insofar as gas-tight hollow chamber plates are used, that is to say the chambers enclose gases firmly and permanently, the insulating effect can be further increased. This can be advantageous in particular for use in harsh climatic conditions or when there is frost, since the use of active temperature control devices can be avoided or at least reduced.

The sea containers can be standardized sea containers (ISO containers).

The sea container can have transport lugs that are accessible from the outside for easy handling with cranes, for example. The transport lugs can remain accessible until the liquid tank is finally installed and can only be sealed in a fluid-tight manner after installation by suitable measures for 100% encapsulation of the sea container, for example by a plastic coating. It is also possible, in particular, to separate protruding transport eyelets after the liquid tank or sea container has been placed in the intended location and only then to seal the separating edges accordingly.

The liquid tank can advantageously have a corresponding inlet for the supply of water, in particular rainwater. In an expedient embodiment, the water inlet can be arranged laterally on an upper edge of the liquid tank. However, the arrangement of one and/or more water inlets at different points of the liquid tank is also conceivable and possible.

Advantageously, the water inlet is preceded by a solids separator, through which solids washed in by the water inlet can be separated before the water enters the liquid tank.

A preferably serviceable or replaceable filter unit for filtering the inflowing water can also be arranged in the water inlet.

The liquid tank can also have a level indicator, which is preferably attached externally and is based on a mechanical (e.g. float) or non-mechanical (e.g. distance sensors) measuring principle. The filling level indicator can also be set up purely as a signal transmitter for forwarding the filling level to an external data processing device, in particular via wireless or wired communication paths. Similarly, other sensors such as a pH sensor, a temperature sensor, an image sensor can be installed on or in the liquid tank. In this way, the necessary requirements for remote maintenance can be implemented.

For improved ease of maintenance, the liquid tank can have appropriate access hatches or closable manholes, through which access to the interior of the liquid tank for maintenance or cleaning purposes is possible. The access hatches or closable manholes are preferably attached to the upper side of the liquid tank and are preferably made entirely of a plastic or at least sealed over the entire surface with a plastic.

In order to avoid or slow down fouling processes or fermentation processes, a pump for circulating the water stored in the liquid tank can also be arranged in the liquid tank. The fluid located in the liquid tank can be constantly circulated by means of a corresponding circulating pump and, in addition to fouling and/or fermentation processes, the deposition of unwanted sediments can also be prevented or at least reduced.

Furthermore, the liquid tank can also have a heating and/or cooling device for temperature control of the fluid located in the liquid tank. Depending on the application, the temperature control device designed as a heating and/or cooling device can be used to provide the fluid in the liquid tank at a predefined target temperature.

In one embodiment, the fluid can be rainwater, which is available for use in downstream processes treated as process water or even as drinking water. In other embodiments, the fluid can also be food, such as syrup, or free-flowing solids, such as sugar, salt, or flour. The fluid can also be chemical liquids such as paraffins for use in the chemical process industry, which have high storage and processing requirements at certain temperatures. Other fluids are possible.

To remove the liquid, the liquid tank can have a removal device designed, for example, as a vertical removal tube that extends approximately to the underside of the liquid tank.

Another aspect of the invention provides a cistern system with at least one liquid tank as described above, wherein the at least one liquid tank is buried in the ground. 'Buried' means that the liquid tank is arranged at least partially below the surface of the earth, but preferably completely below the surface of the earth, i.e. buried in the ground. Inspection openings and/or fill level indicators of the liquid tank and interfaces for the aforementioned sensors can expediently at least partially protrude from the ground.

Only through the liquid-tight, external encapsulation is the sea container of the liquid tank protected from corrosion processes underground and can show a corresponding service life of several decades.

By burying it is possible to provide an underground cistern system that requires virtually no additional space and thus allows development or use of the surface above. Due to the use of modified sea containers, the load-bearing capacity of the ground remains high, so that additional support measures such as concrete borders, pillars or the like can be dispensed with.

The surface can advantageously be or be sealed, with the sealed area being passable in particular by road vehicles. For example, a parking lot can easily be upgraded to a fluid or water storage tank. This makes it possible, for example, to use parking lot areas, sealed streets or the like underground for a precipitation collection system comprising a cistern system with a liquid tank without taking up additional space.

The precipitation collection system can be arranged directly under a sealed surface such as a street, a parking lot or a roof. However, it can also be located at a distance from a sealed surface. The sealed area is used to collect precipitation, which is fed to the cistern system via one or more drains with pipes, for example.

A drain of the or a sealed area can be connected to the precipitation system directly or via at least one solids separator and/or suitable filter systems.

In an advantageous embodiment, the entire liquid tank or just the bottom of the liquid tank can be arranged at an incline of 2-10° to the horizontal. Due to the inclined position, the removal of fluid located in the liquid tank can be ensured at a designated removal point.

The inclined position of the floor can be realized either by sloping the entire liquid tank, i.e. by inserting the liquid tank at an angle into the ground. But you can also by an oblique introduction of the inside panel, d. H. the inside of the cladding of the floor panel.

In an advantageous further development of the cistern system, several liquid tanks can be fluidically connected to one another in series. In particular, the connection can be designed in such a way that each liquid tank has exactly one geodetically lowest point or area for passing on the fluid in the liquid tank to the next liquid tank, so that the fluid can flow unhindered and/or using a pumping device from the one in the series first liquid tank can flow to the last liquid tank in the series.

Instead of a separate seal for a plurality of liquid tanks, a plurality of liquid tanks can be encapsulated at least on the outside by a common seal, so that the outside seal encloses a large number of liquid tanks at the same time. As a result, production costs and the use of materials can be reduced.

In addition, it is possible to use liquid tanks in an aggressive environment or in contaminated soil, whereby due to the double sealing (inside and outside) there is no risk of the contaminated environment entering the interior of the liquid tank or accelerated deterioration of the sea container. In particular, when liquid tanks are used in a cistern system in a contaminated environment, it is not necessary to decontaminate or remove the soil in order to put the environment to good use.

• a) Bereitstellen eines Seecontainers,
• b) Bereitstellen von insb. als Hohlkammerplatten ausgebildeten Kunststoffplatten zur Bildung von innenseitigen und außenseitigen Kunststoffverkleidungen für sechs Seitenflächen des Seecontainers,
• c) Einbringen von wenigstens einer Öffnung in eine Wandung des Seecontainers,
• d) Einbringen von zu c) korrespondierenden Öffnungen in die innenliegende und außenliegende Kunststoffverkleidungen,
• e) Positionieren der innenliegenden Kunststoffverkleidungen im Inneren des Seecontainers,
• f) Schließen und Verschweißen von Türen des Seecontainers,
• g) Anlage der innenliegenden Kunststoffverkleidungen an die Seecontainerwandungen und Verschweißen der Kunststoffverkleidungen entlang der Stoßkanten der Kunststoffverkleidungen,
• h) Anlage der außenliegenden Kunststoffverkleidungen an die Containerwandungen und Verschweißen der Kunststoffverkleidungen entlang der Stoßkanten der Kunststoffverkleidungen,
• i) Einbringen von Kunststoffrohren in die zuvor hergestellten Öffnungen und innensowie außenseitiges Verschweißen der Kunststoffrohre mit der innenseitigen bzw. der außenseitigen Kunststoffverkleidung.

A further aspect of the invention provides a method for producing a liquid tank from a sea container, the method comprising at least the following steps:

• a) Provision of a sea container,
• b) Provision of plastic panels, in particular designed as hollow chamber panels, to form internal and external plastic cladding for six side surfaces of the sea container,
• c) making at least one opening in a wall of the sea container,
• d) Making openings corresponding to c) in the internal and external plastic cladding,
• e) Positioning of the internal plastic panels inside the sea container,
• f) closing and welding of sea container doors,
• g) Attaching the internal plastic paneling to the sea container walls and welding the plastic paneling along the abutting edges of the plastic paneling,
• h) Attaching the external plastic cladding to the container walls and welding the plastic cladding along the abutting edges of the plastic cladding,
• i) Insertion of plastic pipes in the previously made openings and internal as well as external welding of the plastic pipes with the inside or the outside plastic lining.

1. a) Bereitstellen eines Flüssigkeitstanks aus einem vorbeschriebenen modifizierten Seecontainer,
2. b) Aushub einer Grube zum Einbringen des Flüssigkeitstanks in das Erdreich,
3. c) Einbringen des Flüssigkeitstanks in die Grube
4. d) Verschließen der Grube und gegebenenfalls Versiegelung der über dem Flüssigkeitstank befindlichen Deckschicht.

To produce a cistern system according to the invention, the following process steps can be provided in this or another step sequence:

1. a) Provision of a liquid tank from a modified sea container as described above,
2. b) Excavation of a pit to insert the liquid tank into the ground,
3. c) Bringing the liquid tank into the pit
4. d) Closing the pit and, if necessary, sealing the top layer above the liquid tank.

The invention also relates to the corresponding use of a sea container to form a liquid tank as described above and the use of a liquid tank to form a cistern system as described above.

The manufacture of a liquid tank from a used sea container is particularly advantageous, since in particular defects, chipped paint or other impairments due to the complete encapsulation of the sea container are either insignificant or can be easily repaired. According to the invention, therefore, the use of a used sea container for the manufacture of a liquid tank as described above is also claimed.

1. a) ein- oder mehrteilige Kunststoffplatten zur Herstellung einer innenliegenden Verkleidung,
2. b) ein- oder mehrteilige Kunststoffplatten zur Herstellung einer außenliegenden Verkleidung,
3. c) wenigstens ein Zu- oder Ableitungsrohr aus vorzugsweise Kunststoff,
4. d) optional eine Heizwendelmuffe.

The idea of the invention also includes a set for modifying a sea container for producing a liquid tank, the set providing the following:

1. a) one-piece or multi-piece plastic panels for the production of an internal lining,
2. b) one-part or multi-part plastic panels for the production of an external cladding,
3. c) at least one inlet or outlet pipe preferably made of plastic,
4. d) optionally an electrofusion sleeve.

The set can also include corresponding instructions for action in the form of paper or an indirect possibility of accessing corresponding instructions for action, for example via a network.

Advantageous configurations and features of the invention result from the attached figures and the following description of the figures.

• 1 ein Zisternensystem mit einem Flüssigkeitstank in einer perspektivischen Darstellung nach einer ersten Ausführungsform
• 2 das Zisternensystem aus 1 in einer ersten Schnittansicht von der Seite,
• 3 das Zisternensystem aus 1 in einer zweiten Schnittansicht von der Seite,
• 4 das Zisternensystem aus 1 in einer Draufsicht,
• 5 ein Zisternensystem mit parallel und in Serie geschalteten Flüssigkeitstanks in einer zweiten Ausführungsform in Draufsicht,
• 6 das Zisternensystem aus 5 in einer Schnittansicht von der Seite,
• 7 ein drittes Ausführungsbeispiel für ein Zisternensystem mit einheitlicher außenseitiger Versiegelung für eine Vielzahl von modifizierten Seecontainern,
• 8 das Zisternensystem aus 7 in einer Draufsicht ohne außenseitige Versiegelung,
• 9 das Zisternensystem aus 7 in einer Schnittansicht von der Seite ohne außenseitige Versiegelung.

show:

• 1 a cistern system with a liquid tank in a perspective view according to a first embodiment
• 2 the cistern system 1 in a first sectional view from the side,
• 3 the cistern system 1 in a second sectional view from the side,
• 4 the cistern system 1 in a top view,
• 5 a cistern system with liquid tanks connected in parallel and in series in a second embodiment in plan view,
• 6 the cistern system 5 in a sectional view from the side,
• 7 a third exemplary embodiment of a cistern system with a uniform external seal for a large number of modified sea containers,
• 8th the cistern system 7 in a plan view without external sealing,
• 9 the cistern system 7 in a sectional view from the side without outside sealing.

1 until 4 show excerpts of a first embodiment of a cistern system 11 for collecting precipitation. The cistern system 11 comprises a sea container 1 which has been developed into a liquid tank 100 and which is fluidically connected to a solids separator 12 and a second sea container 1' which has been modified to form a liquid tank 100'. The cistern system is permanently installed for permanent use on site.

Rainwater freed from solids can be fed into the liquid tank 100 via the solids separator 12 and can be removed again via the extraction pipe 9 if necessary. Collection surfaces for collecting the precipitation and corresponding feed devices for feeding the rainwater into the solids separator 12 have not been reproduced at this point and can be supplemented conceptually in different versions.

In order to increase the capacity, the liquid tank 100 is extended by the liquid tank 100' and stands with it above the esp 2 visible connecting lines 10, 10' which are joined in a cohesive manner via a heating coil sleeve 13. The connecting lines are each attached at the geodetically lowest point, so that an active volume delivery device for shifting the tank contents from one liquid tank to the other can be dispensed with. In order to avoid putrefaction processes, the tank contents are periodically circulated in each of the liquid tanks 100, 100' by a pump device (not shown here).

The sea containers shown here are standardized ISO containers, for example in accordance with ISO standard 668 with common dimensions (eg 40-foot and 20-foot containers) made of conventional steel material, which have four side walls or walls 2a to 2d, one Base plate 3 and a cover plate 3 or 4 together with transport lugs indicated by reference numeral 20 in the figures. To increase the load capacity and the buckling strength, the side walls as well as the ceiling and base plate are profiled like sheet piling. The sea containers used here point to this addition, on one end face, referred to here as side wall 2c, pivoting doors 5 and 5', which are welded all the way around to the remaining housing wall of the sea container to increase the strength. The doors 5, 5' facilitate the installation of the internal seal.

Of course, instead of the sea containers 100, 100' shown here with pivoting doors, other standardized or non-standard sea containers can also be used.

To form liquid tanks 100, 100', the sea containers 1 and 1' are completely encapsulated on the inside and outside by a fluid-tight seal. By selecting a suitable material for the internal seal 6 (side panels 6a-6d and ceiling or floor paneling 6e or 6f) or 6' (6'a to 6'f analogously), it is possible to use almost any fluid (gases and/or or liquid) without unwanted chemical reactions occurring with the sea container 1 or 1'.

Depending on the liquids to be stored, the internal seal can be made of an advantageous material, for example acid-resistant for storing acidic liquids. Due to the encapsulation on the outside, the sea container is protected from external influences, here in particular condensate water.

The inner and the outer sealing 6 and 7 of the sea container is designed as plastic plates welded together in all the exemplary embodiments. Instead of plastic plates, however, foils or foil composite materials with a sufficient thickness of, for example, >5mm could also be used.

Since plastic is essentially not exposed to oxidation processes like steel, the external and internal sealing can be chosen to be very thin. For more robust designs, however, profiled plastic panels or hollow chamber panels can also be used, which are less prone to damage to the encapsulation of the “outer skin”, which is critical for the application, and have higher thermal insulation performance. Thicknesses of around 5 mm have proven to be advantageous for the internal sealing. Thicknesses of 10mm and more have proven to be advantageous for the external sealing, as these are better able to withstand external forces such as knocks and blows when transporting the liquid tanks.

To produce the internal seal, plastic panels corresponding to the side walls, the floor panel and the ceiling panel are brought into the interior of the sea container 1, brought into contact with the walls of the sea container 1 and welded together at the edges. Similarly, the outside sealing is produced by plastic plates corresponding to the walls, which are welded on the outside in contact with the walls and then at the abutting edges (plastic).

In order to ensure that no corrosive liquids are trapped between the inner and outer seals, the liquid tank is preferably not manufactured directly on site, but in advance in a suitable production hall. Here, the sea container can be subjected to a preparatory drying process. Damaged areas can also be repaired if necessary before installing the seal.

In order to provide the functional openings in the liquid tank 100, referred to in the exemplary embodiments as extraction pipe 9, inspection opening or entry hatch 8 and connecting line 10, breaks (openings) are preferably made in the wall of the sea container at the intended points before the seal is installed, as well as at the corresponding points of the seal or .of the cladding made of plastic panels.

The edges created when breaking in (openings) are sealed, which can be done, for example, with a suitable plastic coating. Advantageously, especially in the case of the use of plastic parts located in the functional openings - here the connecting lines 10 made of plastic, the sampling tube 9 and the inspection opening 8 - these are internally and externally circumferentially sealed with the inner or outer seal ( plastic)welded. As a result, the sea container is completely surrounded by plastic and protected against corrosion.

The liquid tank or tanks prefabricated in this way can be transported to the intended installation sites and—in the case of underground systems—sunk into prepared pits in the ground and fluidically connected to one another on site. The fluidic interconnection can take place through the heating coil sleeves 12 shown here as an example. Through the use of electrofusion sleeves, the connecting lines 10 made of plastic, in particular, can be quickly connected to one another with a material fit, which reduces the installation effort.

Possibly unsealed areas before installation or for transport - here transport lugs 20 - can be suitably sealed before burying the pit.

An installation situation of the cistern system in the ground 14 is exemplary for the second embodiment in 6 implied. After the liquid tanks have been connected, the pit can be filled up and the surface can be sealed or used for other purposes, since the sea containers of the liquid tanks have sufficient mechanical load-bearing capacity in contrast to conventional injection-molded cistern systems.

As from the second embodiment of the 5 until 7 As can be seen, several liquid tanks of the same or different sizes can be arranged as desired and fluidically connected to one another. As here, they can have two liquid tanks 100, 200 designed as distributors and extension tanks 100a to 100h or 200a to 200h adjoining them. In the second exemplary embodiment, the individual liquid tanks are each spaced apart from one another. However, it would also be conceivable and possible to butt-join individual liquid tanks, in which case the fluidic connection between the liquid tanks would then have to be modified slightly, for example by means of connecting lines 10 of different diameters that can be telescoped into one another.

In the 7 until 9 Finally, a third exemplary embodiment is shown, which differs from the previous ones essentially in that the individual liquid tanks 1 to 1''' do not each have an independent external seal or cladding, but rather a common external seal or cladding, hereinafter also "skin -system".

Such as from 7 As can be seen, the cistern system 11 designed with a single-skin system consists of four liquid tanks 100 to 100''', which are lined on the inside with internal seals 6 to 6''', analogously to the previous exemplary embodiments.

The production of the common outer lining 7 is preferably carried out directly at the installation site, with the individual sea containers 1 to 1'' first being positioned end to end and the fluidic connections being made by connecting two inner linings of two liquid tanks before the sea containers 1 to 1''' are placed over outer paneling 7 (side panels 7a to 7f and ceiling/floor paneling 7g and 7h) which is assembled from a large number of plastic plates and welded to one another.

In the 8th and 9 the outer cladding formed as a single skin is hidden or not shown explicitly.

For the exemplary embodiments shown here as examples, the same or comparable reference symbols have been used for the same or comparable components or functions, so that instead of redundant explanations, reference is made or can be made to the respective sections of the respective other exemplary embodiments.

Reference List

1

sea container

2

profiled wall (side wall) (sea container)

3

profiled bottom plate (sea container)

4

profiled ceiling panel (sea container)

5

doors (sea containers)

6

internal sealing (welded plastic plates)

7

outside sealing (welded plastic plates)

8th

Inspection opening or access hatch

9

sampling tube

10

connecting line (plastic pipe)

11

cistern system

12

solids separator

13

heating coil sleeve

14

soil

15

Trafficable surface sealing

20

transport eyelet

100

liquid tank

200

liquid tank

QUOTES INCLUDED IN DESCRIPTION

This list of the documents cited by the applicant was 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.

Patent Literature Cited

• US2010025407A1 [0004]

Claims (19)

Liquid tank from a modified sea container (1) with profiled side walls (2a-2d), a base plate (3) and a cover plate (4), characterized in that the liquid tank (100, 200) for fluid-tight encapsulation of the sea container (1) inside and is completely sealed with plastic on the outside. Liquid tank (100, 200) after claim 1 , characterized in that the inner sealing (6) and/or the outer sealing (7) is designed as a plastic cladding made of plastic plates welded together in a fluid-tight manner. Liquid tank (100, 200) according to one of the preceding claims, characterized in that the sea container (1) has at least one opening in at least one wall (2a-2d, 3, 4) for the passage of a fluid, with a boundary edge of the or each opening a perimeter edge seal connecting the outboard and inboard seals. Liquid tank (100, 200) according to one of the preceding claims, characterized in that plastic tubes (10) are introduced into the at least one opening and are welded in a materially bonded and fluid-tight manner both to the internal seal (6) and to the external seal (7). are. Liquid tank (100, 200) according to one of the preceding claims, characterized in that between the external seal (7) and one of the profiled walls (2a-d, 3, 4) and/or between the internal seal (6) and one of the profiled walls (2a-d, 3, 4) a gas is enclosed. Liquid tank (100, 200) according to one of the preceding claims 2 until 5 , characterized in that the internal or external plastic cladding consists of twin-wall sheets. Liquid tank (100, 200) according to one of the preceding claims, characterized in that the sea container (1) has a detachable transport eyelet (20) at one point, the point being sealed after the transport eyelet (20) has been separated. Liquid tank (100, 200) according to one of the preceding claims, characterized in that the sea container (1) has a water inlet, in particular for the inlet of rainwater. Liquid tank (100, 200) according to one of the preceding claims, characterized in that it has a pump for circulating the water stored in the liquid tank (100, 200). Liquid tank (100, 200) according to one of the preceding claims, characterized in that the sea container (1) has a heating and/or cooling device for tempering the fluids located in the sea container (1). Cistern system comprising at least one liquid tank (100, 200) according to one of the preceding claims, characterized in that the sea container (1) is buried in the ground (14). cistern system claim 10 comprising two or more fluidly connected liquid tanks (100, 200) according to one of the preceding ones Claims 1 until 9 , characterized in that several or all liquid tanks (100, 200) are fluidically connected to one another in series. Rainfall collection system comprising a sealed area (15) such as a parking lot, a factory building, a garage driveway or a particular sloping street, characterized in that a drain of the sealed area with a cistern system according to a claims 11 or 12 for collecting and temporarily storing precipitation. precipitation collection system Claim 13 , characterized in that at least one liquid tank (100, 200) of the cistern system is located vertically below the sealed area, the sealed area being passable by road vehicles. Method for manufacturing a liquid tank (100, 200) from a modified sea container according to one of the preceding ones Claims 1 until 10 , comprising the following steps in this or another step sequence: a) providing a sea container (1), b) providing plastic panels to form inside and outside plastic panels for six side surfaces of the sea container (1), c) making at least one opening in a wall (2a-2d, 3.4) of the sea container (1), d) making openings corresponding to c) in the inner and outer plastic cladding, e) Positioning the interior plastic panels inside the container, f) Closing and welding doors (5) of the sea container (1), g) Attaching the interior plastic panels to the container walls (2a-2d, 3, 4) and welding the plastic panels along the abutting edges of the plastic cladding, h) placing the external plastic cladding on the container walls (2a-2d, 3.4) and welding the plastic cladding along the abutting edges of the plastic cladding, i) inserting connecting lines (10) into the previously made openings and inside and external welding of the connecting lines (10) to the internal or external plastic paneling. A method of making a cistern system (11) according to any one of the preceding Claims 11 or 12 comprising the following steps in this or another step sequence: a) providing a liquid tank (100, 200) from a modified sea container (1) with the features according to one of Claims 1 until 10 , b) excavation of a pit for bringing in the sea container (1), c) bringing the liquid tank (100, 200) into the pit, d) closing the pit and optionally sealing the top layer over the sea container (1). Use of a sea container (1) to form a liquid tank (100, 200) according to one of the above Claims 1 until 10 . Use of a liquid tank (100, 200) according to one of the above Claims 1 until 10 for forming a cistern system (11) according to one of Claims 11 until 12 . Set for modifying a sea container (1) into a liquid tank (100, 200) according to one of the above Claims 1 until 10 comprising a) one-part or multi-part plastic panels for producing an inner lining (6), b) one-part or multi-part plastic panels for producing an outer lining (7), c) at least one supply or discharge pipe, d) optionally a heating coil sleeve.

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