Concrete pipe having at least one reinforcement, method for producing a concrete pipe having at least one reinforcement, and use of at least one part of a reinforcement of a concrete pipe

Abstract

The invention relates to a concrete pipe (1) having at least one reinforcement (2). In order to make it possible to carry heat away from the concrete pipe (1) more cost-effectively, the reinforcement (2) is formed at least partially by at least one fluid line for conducting a heat transfer fluid.

Description

[0001] Reiß, Volker RSV002PWO

[0002] - 1 -

[0003] Concrete pipe with at least one reinforcement, method for producing a concrete pipe with at least one reinforcement, and use of at least one part of a reinforcement of a concrete pipe

[0004] Technical field

[0005] The invention relates to a concrete pipe with at least one reinforcement. Furthermore, the invention relates to a method for manufacturing a concrete pipe with at least one reinforcement, wherein the reinforcement is manufactured and then at least partially cast in concrete. The invention also relates to the use of at least a portion of the reinforcement of a concrete pipe.

[0006] State of the art

[0007] It is known to dissipate heat from an underground concrete pipe by circulating a heat transfer fluid through it. This allows heat to be extracted from a liquid flowing through the concrete pipe, such as wastewater, and thus recovered. The recovered heat can then be used, for example, via a heat pump for a specific purpose.

[0008] Corresponding concrete pipes are known, for example, from DE 35 21 585 A1 and DE 10 2006 008 379 A1. The concrete pipe from DE 35 21 585 A1 has reinforcement and a pipe arrangement for conveying a heat transfer fluid.

[0009] Disclosure of the invention

[0010] One objective of the invention is to make the removal of heat from a reinforced concrete pipe more cost-effective.

[0011] This problem is solved by the independent claims. Advantageous embodiments are described in the dependent claims, the following description, and the figures, whereby these embodiments, either individually or in combination with at least two of them, can represent an advantageous and / or further developing aspect of the invention. Advantageous embodiments of the concrete pipe can thus provide advantageous features. Reiß, Volker RSV002PWG

[0012] - 2 - form the procedure, and vice versa, even if this is not explicitly mentioned below.

[0013] A concrete pipe according to the invention has at least one reinforcement which is at least partially formed by at least one fluid line for guiding a heat transfer fluid.

[0014] According to the invention, the reinforcement of the concrete pipe has two functions: firstly, the strengthening function, which reinforces the concrete pipe, and secondly, the fluid conduit function, which allows the heat transfer fluid, in particular a heat transfer liquid, to flow through the concrete pipe. Therefore, the need for a pipe assembly, such as that known from DE 35 21 585 A1, in addition to the reinforcement can be eliminated, which significantly simplifies the production of the concrete pipe according to the invention. This results in cost savings.

[0015] The concrete pipe according to the invention can be used to recover heat from a liquid, for example wastewater, flowing through it and / or to extract geothermal energy. Both are highly desirable for reducing emissions of climate-damaging substances. For heat recovery or extraction, the concrete pipe, possibly together with several appropriately designed concrete pipes connected to form an underground channel, can be integrated into a fluid circuit of at least one heat pump. A correspondingly designed heat recovery system, comprising at least one heat pump with a fluid circuit for circulating a heat transfer fluid and at least one concrete pipe according to the invention integrated into the fluid circuit, thus constitutes a further object of the present invention.A heat transfer fluid can be circulated in the fluid circuit, which may contain standard additives to meet project-specific requirements, such as antifreeze, corrosion protection, viscosity increase, deposit protection, and the like.

[0016] The reinforcement of the concrete pipe according to the invention can comprise axially extending reinforcement elements and / or reinforcement elements extending circumferentially with respect to a longitudinal central axis of the concrete pipe. At least one of these reinforcement elements is... (Reiß, Volker RSV002PWO)

[0017] - 3 - elements can be formed by a fluid line for conducting the heat transfer fluid. By forming several reinforcement elements with a single fluid line, or by using separate fluid lines, heat recovery can be targeted to specific sections of the concrete pipe or applied to the entire concrete pipe. The reinforcement can, for example, be designed as a hollow cylindrical reinforcement cage.

[0018] The concrete pipe according to the invention can also have two or more reinforcements, each of which can be at least partially formed by a fluid line. This allows, for example, heat to be extracted in a section of the concrete pipe located closer to an outer surface and simultaneously in a section of the concrete pipe located closer to an inner surface. This offers the possibility of using a heat pump with a suitably designed concrete pipe for heating in winter and cooling in summer, thus increasing energy efficiency.

[0019] The concrete pipe according to the invention can be used both for open installation of such concrete pipes to create an underground canal and for closed installation of such concrete pipes in the form of jacking pipes.

[0020] The concrete pipe according to the invention can, for example at an axial end section, have at least one connection box connected to the at least one fluid line in a fluid-conducting or communicating manner, via which the fluid line can be connected to a corresponding fluid line of a similarly designed concrete pipe that extends axially to the concrete pipe. For longer sections, collector supply and return pipes can be integrated into the pipe wall.

[0021] The core of the invention, namely the replacement of conventional wire reinforcement with reinforcement that is at least partially formed by at least one fluid line for conducting a heat transfer fluid, can in principle also be used in differently designed reinforced concrete components, such as structural elements or the like, where the transport of fluids is advantageous, for example, to cool, heat, dry, or otherwise utilize the reinforced concrete component. Accordingly, the subject matter of the invention can be understood to be any reinforced concrete component with reinforcement according to the invention. Reiß, Volker RS ​​002PWG

[0022] - 4 -

[0023] According to an advantageous embodiment, the fluid line is formed by a tubular reinforcement element. The reinforcement is thus at least partially formed by the tubular reinforcement element, through which the heat transfer fluid can be guided to dissipate heat from the concrete pipe. The reinforcement element can be cast or embedded in the concrete during the production of the concrete pipe, preferably in the manner of conventional reinforcement. The reinforcement element can have a smooth outer surface or be designed with radially projecting ribs. The latter can improve the heat absorption capacity of the reinforcement element. Depending on the requirements, the reinforcement element can be arranged closer to an outer surface of the concrete pipe than to an inner surface.The former facilitates heat extraction from the surrounding rock mass of a suitably designed, underground channel, while the latter facilitates heat recovery from the interior of the channel. The reinforcement can, for example, comprise a hollow cylindrical reinforcement cage with axially extending and circumferentially extending reinforcement elements, the axially extending elements being welded to the circumferentially extending elements. One or more of these reinforcement elements can be designed as corresponding fluid lines or tubular forms. The concrete pipe can also have two suitably designed reinforcement cages, which can be arranged coaxially and radially spaced from each other. The design of a reinforcement cage can be at least partially comprised of corresponding fluid lines or tubular forms.Using pipes instead of conventional rods leads to a higher static stability of the concrete pipe, which overall results in a higher static safety of a correspondingly constructed, underground canal.

[0024] According to a further advantageous embodiment, the fluid line is formed by two hollow cylindrical reinforcement cylinders arranged coaxially and radially spaced from one another, between which a cavity is formed for conducting the heat transfer fluid. The reinforcement cylinders can be arranged radially spaced from one another and fixed to each other by means of at least one spacer element. The spacer element can, for example, run helically within the cavity, whereby a longitudinal center axis of the resulting helix can be identical to a longitudinal center axis of the concrete pipe. (Reiß, Volker RSV002PWG)

[0025] - 5 -

[0026] Heat transfer fluid flows along the facing sides of the reinforcement cylinders, absorbing heat in the process. The radially outer reinforcement cylinder can form a section of the outer surface of the concrete pipe, thus enabling very efficient heat absorption from the surrounding rock of a suitably constructed, buried channel.

[0027] According to a further advantageous embodiment, the fluid conduit is formed by a tubular spacer element of the reinforcement, over which two hollow cylindrical reinforcement cylinders, arranged coaxially, are radially spaced apart. The reinforcement cylinders can be fixed to one another via the spacer element. The spacer element can, for example, run helically in a cavity between the two reinforcement cylinders, with a longitudinal center axis of the resulting helix being identical to a longitudinal center axis of the concrete pipe. The radially outer reinforcement cylinder can form a section of the outer surface of the concrete pipe, thus enabling very good heat absorption from the surrounding rock of a correspondingly constructed, buried channel.

[0028] According to a further advantageous embodiment, a cavity arranged between the reinforcement cylinders, through which the spacer element runs, is filled with a liquid. This means that the spacer element, designed as a fluid conduit, is partially surrounded by the liquid, enabling good and uniform heat transfer to the spacer element. The liquid can, for example, be a corrosion inhibitor, which is particularly advantageous for metal reinforcement cylinders. The liquid can contain standard additives to meet project-specific requirements, such as antifreeze, corrosion protection, viscosity increase, deposit protection, and the like.

[0029] According to a further advantageous embodiment, the reinforcement is made at least partially of a metal, a metal alloy, a plastic, or a composite material. The metal can be, for example, copper. The metal alloy can be, for example, steel. The choice of reinforcement material can be made depending on the specific requirements. Reiß, Volker RSV002PWO

[0030] - 6 -

[0031] According to a method according to the invention for producing a concrete pipe with at least one reinforcement, the reinforcement is produced and then at least partially cast in concrete, wherein the reinforcement is produced in such a way that the reinforcement is formed at least partially by at least one fluid line for guiding a heat transfer fluid.

[0032] The advantages mentioned above with regard to the concrete pipe are correspondingly associated with this method. In particular, the concrete pipe can be manufactured using this method according to one of the above-mentioned configurations or a combination of at least two of these configurations.

[0033] The invention further relates to the use of at least a part of the reinforcement of a concrete pipe for guiding a heat transfer fluid through the concrete pipe.

[0034] The advantages mentioned above with regard to the concrete pipe are correspondingly associated with its use. In particular, the concrete pipe can be used according to one of the above-mentioned configurations or a combination of at least two of these configurations.

[0035] The invention is explained below by way of example with reference to the attached figures and preferred embodiments, whereby the features explained below can represent an advantageous and / or further developing aspect of the invention both individually and in different combinations with one another.

[0036] Brief description of the characters

[0037] It shows:

[0038] Fig. 1 schematic representations of an embodiment of a concrete pipe according to the invention;

[0039] Fig. 2 schematic representations of a further embodiment of a concrete pipe according to the invention; and Reiß, Volker RSV002PWO

[0040] - 7 -

[0041] Fig. 3 schematic representations of a further embodiment of a concrete pipe according to the invention.

[0042] Detailed description of the characters

[0043] In the figures, identical or functionally equivalent components are marked with the same reference symbols. Repeated descriptions of such components may be omitted to avoid unnecessary repetition.

[0044] Fig. 1 shows schematic representations of an embodiment of a concrete pipe 1 according to the invention with reinforcement 2, wherein Fig. 1a shows an axial end view of the concrete pipe 1 and Fig. 1b shows a perspective side view of the reinforcement 2.

[0045] The concrete pipe 1 has a hollow cylindrical concrete shell 3 in which the reinforcement 2 is embedded, which is why the reinforcement 2 is indicated by a dashed line in Fig. 1a. The reinforcement 2 is arranged closer to an outer surface 4 of the concrete pipe 1 than to an inner surface 5 of the concrete pipe. The reinforcement 2 is also hollow cylindrical and arranged coaxially to a longitudinal center axis L of the concrete pipe 1. The reinforcement 2 can be made partially or completely of a metal, a metal alloy, a plastic, or a composite material.

[0046] Fig. 1b shows that the reinforcement 2 is designed as a hollow cylindrical reinforcement cage. The reinforcement 2 comprises several reinforcement elements 6 arranged parallel and circumferentially offset from one another, and running parallel to the longitudinal center axis L of the concrete pipe 1, as well as several circumferentially extending reinforcement elements 7 arranged axially offset from one another.

[0047] At least one of the reinforcement elements 6 or 7 is designed as a fluid conduit for conveying a heat transfer fluid. The fluid conduit is formed by a tubular reinforcement element 6 or 7 of the reinforcement 2. Consequently, the reinforcement 2 is at least partially formed by at least one fluid conduit for conveying a heat transfer fluid. Thus, the reinforcement 2, or the at least one tubular reinforcement element 6 or 7, can be configured as shown in [reference not shown]. (Reiß, Volker RSV002PWO)

[0048] - 8 - for example, conventional methods, connected to a fluid circuit of a heat pump not shown.

[0049] Fig. 2 shows schematic representations of a further embodiment of a concrete pipe 1 according to the invention with reinforcement 2, wherein Fig. 2a shows an axial end view of the concrete pipe 1 and Fig. 2b shows a longitudinal section of the concrete pipe 1.

[0050] The reinforcement 2 differs from the embodiment shown in Fig. 1 in that the fluid path of the reinforcement 2 is formed by two hollow cylindrical reinforcement cylinders 8 and 9 of the reinforcement 2, arranged coaxially and radially spaced from each other, between which a cavity 10 is formed for conducting the heat transfer fluid. The reinforcement cylinders 8 and 9 are arranged coaxially to the longitudinal center axis L of the concrete pipe 1. Furthermore, the reinforcement cylinders 8 and 9 are radially spaced from each other and fixed to one another by a helically shaped spacer element 11. The spacer element 11 runs helically within the cavity 10 of the reinforcement 2.

[0051] To avoid repetition, reference is made to the description above for Fig. 1.

[0052] Fig. 3 shows schematic representations of a further embodiment of a concrete pipe 1 according to the invention with reinforcement 2, wherein Fig. 3a shows an axial end view of the concrete pipe 1 and Fig. 3b shows a longitudinal section of the concrete pipe 1.

[0053] The reinforcement 2 differs from the embodiment shown in Fig. 2 in that the fluid line is formed by the tubular and helical spacer element 11 of the reinforcement 2, over which the two hollow cylindrical reinforcement cylinders 8 and 9 of the reinforcement 2, arranged coaxially, are radially spaced apart. Furthermore, unlike the embodiment shown in Fig. 2, the cavity 10 arranged between the reinforcement cylinders 8 and 9, through which the spacer element 11 runs, is filled with a liquid, which may, for example, be corrosion-inhibiting.

[0054] To avoid repetition, please refer to the description above for Figures 1 and 2. Reiß, Volker RS ​​002PWO

[0055] - 9 -

[0056] Reference symbol list

[0057] 1 concrete pipe

[0058] 2 Reinforcement

[0059] 3 concrete bodies

[0060] 4 Exterior surface area of ​​1

[0061] 5 Interior surface area of ​​1

[0062] 6 Reinforcement element

[0063] 7 Reinforcement element

[0064] 8 reinforcement cylinders

[0065] 9 reinforcement cylinders

[0066] 10 Cavity

[0067] 11 spacer element

[0068] L Longitudinal center axis of 1

Claims

Reiß, Volker RSV002PWO - 1 - Patent claims 1. Concrete pipe (1) with at least one reinforcement (2), characterized in that the reinforcement (2) is at least partially formed by at least one fluid line for conveying a heat transfer fluid.

2. Concrete pipe (1) according to claim 1, characterized in that the fluid line is formed by a tubular reinforcement element (6, 7; 11) of the reinforcement (2).

3. Concrete pipe (1) according to claim 1, characterized in that the fluid line is formed by two hollow cylindrical reinforcement cylinders (8, 9) of the reinforcement (2) arranged coaxially and radially apart from each other, between which a cavity (10) is formed for guiding the heat transfer fluid.

4. Concrete pipe (1) according to claim 1, characterized in that the fluid line is formed by a tubular spacer element (11) of the reinforcement (2), over which two hollow cylindrical reinforcement cylinders (8, 9) of the reinforcement (2) are arranged radially spaced apart from each other.

5. Concrete pipe (1) according to claim 4, characterized in that a cavity (10) arranged between the reinforcement cylinders (8, 9), through which the spacer element (11) runs, is filled with a corrosion-inhibiting liquid.

6. Concrete pipe (1) according to one of claims 1 to 5, characterized in that the reinforcement (2) is at least partially made of a metal, a metal alloy, a plastic or a composite material.

7. Method for producing a concrete pipe (1) with at least one reinforcement (2), wherein the reinforcement (2) is produced and subsequently cast at least partially in concrete, characterized in that the reinforcement (2) is produced in such a way that the reinforcement (2) is formed at least partially by at least one fluid line for guiding a heat transfer fluid. Reiß, Volker RSV002PWO - 2 - 8. Use of at least a part of a reinforcement (2) of a concrete pipe (1) for guiding a heat transfer fluid through the concrete pipe (1).

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