| 摘要 |
The invention relates to a double-walled pipeline system (10), in particular for an air/waste-gas chimney, exhibiting an outer pipe system (14) and an inner pipe system (12) which is arranged concentrically in said outer pipe system by means of supporting elements (44), the pipe systems (12; 14) being made up of individual pipes (18, 20 and 32, 34, respectively). In order to provide a double-walled pipeline system, remaining mechanically stress-free under temperature loading, which is also suitable for large overall heights, with as small a number of different components as possible, it being possible to assemble said pipeline system and carry out subsequent changes by hand without using tools, and the use of jointing methods such as adhesive bonding or welding being rendered superfluous, it is proposed that the supporting elements (44, 62) bear against a surface, of an inner and/or outer pipe, running obliquely or transversely with respect to the axis of the pipeline system and support in each case at least one pipe part (16, 50) of the inner pipe system (12) in the axial direction. Preferably, the supporting elements (44, 62) are configured in one piece with a pipe part (16 or 50) of the inner pipe system (12) and rest, on the outside, on a shoulder (38) or the like of an outer pipe (32). A pipe connector (16) which exhibits supporting elements may be provided in order to connect the inner pipes. <IMAGE>
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