AT10229U1 - THERMALLY INSULATED PIPING - Google Patents

Description

2 AT 010 229 U1

The innovation relates to a thermally insulated pipe in which run several tubes, including at least one for heat transfer medium high temperature and possibly lines, especially for underground installation.

Such pipelines are known from the prior art and include in particular flow and return of heating pipes or solar collector pipes, with various still electrical cable for signals (low voltage) or for consumers (230 volts, variously five-pole) or a grounding line for equipotential bonding or the like more (optical fiber, antenna cable, etc.) is performed in such pipelines.

The temperatures usually occurring in the pipes for solar collectors make it necessary to use a high-temperature resistant insulation, such as solar rubber, which is associated with high costs. The thermal insulation for heating flow or return comes with a thermal insulation material such as closed-cell polyethylene (PE insulation) of what is much cheaper.

The tubes themselves are usually made of plastic in the heating circuit or stainless steel, copper or other, according to heat-resistant materials in the solar circuit and are designed in a conventional manner so that they can be bent with the surrounding pipe.

In many cases, it is now desirable to lay a solar collector circuit along with other media pipes in a suitable pipeline, but this fails because of the high costs incurred in the larger pipe sections by the expensive thermal insulation material.

The innovation has the goal of solving this problem and to provide a pipeline for solar heat exchange medium and at least one further medium pipe, which is inexpensive to produce and yet sufficiently isolated.

The innovation proposes to provide at least the tube in which the hot heat transfer medium is transported by the solar collector, referred to in the following flow, with a designed for these temperatures thermal insulation, preferably of solar rubber, and this so coated and sufficiently cool on its outer surface Pipe as a whole with the other media pipes and optionally electric, pneumatic or other lines in cost-effective, conventional, thermal insulation material, preferably PE insulation, wrap and possibly to lead in a common protective or casing pipe.

In this way, you no longer need the costly Hochtemperaturdämmmaterial than in the prior art and receives a pre-insulated pipe in the all desired media pipes and pipes pre-assembled and mechanically held against each other and run thermally insulated. Under "conventional thermal insulation material" is understood in the description and the claims of any cost, the usual temperature of pipes of a heater insulating insulating material, it should thus only the contrast to the expensive and higher temperatures, such as the flow of solar systems, surviving, here "High-temperature insulation" materials are indicated.

The innovation is explained in more detail below with reference to the drawing. 1 shows purely schematically a first embodiment with some media pipes and signal lines and Fig. 2 shows a variant.

A pipeline 1 according to the invention according to FIG. 1 has a protective tube 2, for example made of stainless steel or of plastic, which is provided with a jacket insulating layer 3, for example

Claims (5)

3 AT 010 229 U1 Polyethylene foam, permanently bonded, for example glued or extruded. Other embodiments are possible, so the Mantelisolierschicht can also be inserted only. It also does not have to be one-piece, but can be designed in several parts, in particular in pipelines with numerous pipes / lines. Inside this pipe 1, two high-temperature pipes 4 are provided in the illustrated embodiment, which have a jacket made of stainless steel or the like and around which a high-temperature insulation 5 is arranged. The nature and strength of the high-temperature insulation 5 depends on the maximum temperature to be expected in the high-temperature pipe 4 and the maximum temperature permissible on the outer jacket of the insulation 5 and can be made stronger, for example, in the case of the two pipes in which the heat transfer medium comes from the solar collector at the other, the so-called return. Further provided in an inner insulation 9 of "conventional" insulation material of the pipeline 1 are media tubes 6 for a medium whose maximum temperature is low enough to be isolated with cost thermal insulation, such as pipes for heating flow and heating return, in such pipes consists of Coat mostly made of plastic, for example, crosslinked polyethylene (PEX) or polybutene (PB). These tubes can also be provided with their own insulating layer, the jacket insulation layer 3 or the inner insulation 9 then has to fulfill only "residual" insulating tasks and serves mainly for the mechanical fixation of the individual tubes / lines. Finally, an electric cable 7, five-pole, is also drawn, for example for a three-phase motor and, near the center of the pipeline, an optical waveguide 8, for example for the transmission of control signals and / or measured data. 2 shows a variant in which a high-temperature insulation 5 'with an approximately semicircular cross-section and an inner insulation 9' made of conventional insulating material, likewise with a substantially semicircular cross-section, are provided in a jacket tube 2. Within the insulations, tubes 4 are arranged for the transport of high-temperature media or for the transport of moderate-temperature media. The two insulation together with the tubes are compressed in the position shown and pushed into the casing tube 2, without a Mantelisolierschicht (Fig. 1) is provided. The connection between the insulation and the inner surface of the jacket tube is only about the whopping concern. Of course, a separate jacket insulating layer can also be provided in such an embodiment. It should be noted that the illustrated proportions, wall thicknesses, layer thicknesses, etc. are not to scale, but serve as a purely schematic representation. It is of course possible to arrange more or less than the illustrated number of pipes or other media pipes or lines, in knowledge of the innovation, it is for the skilled in the field of insulated pipes a light, here the right arrangement and selection hold true. As materials, it is possible to use all those which come into question in the prior art for the pipe or pipe or insulation / sheath in question, the pipes / pipes can be loosely inserted into the surrounding material or pointwise / in sections / glued over the entire surface or connected differently. Claims 1. A thermally insulated pipe in which a plurality of pipes, including at least one, in the hot heat transfer medium, for example, coming from a solar collector, is transported, and optionally lines such as power lines, optical fibers, etc., run, in particular for Laying buried, characterized in that at least the high-temperature pipe (4) is provided with a high-temperature insulation (5), preferably made of solar rubber, designed for its temperatures, and in that way this jacket, which is so sheathed and sufficiently cool on its outer surface, as a whole with the other media pipes (6 ) and optionally electrical, pneumatic or other lines (7, 8) in conventional thermal insulation material, preferably PE insulation, wrapped and in a common protective or casing tube (2) are guided. 2. Pipe according to claim 1, characterized in that within the protective or casing tube (2) a Mantelisolierschicht (3) is provided, which with the protective or casing tube (2) has surface contact. 3. Pipe according to claim 2, characterized in that the Mantelisolierschicht (3) with the protective or casing tube (2) at least partially firmly connected, for example glued or extruded. 4. Pipe according to claim 1, characterized in that the conventional thermal insulation material (9, 9 ') and / or the high-temperature insulation (5, 5') with the protection or. Jacket tube (2) has flat contact. 5. Pipe according to claim 4, characterized in that the conventional thermal insulation material (9, 9 ') and / or the high-temperature insulation (5, 5') with the protection or. Jacket tube (2) at least partially firmly connected, for example glued or extruded. For this purpose 2 sheets of drawings