Drehdurchfuehrung, insbesondere fuer ein fluessiges Arbeitsmedium

DE 102008062992 A1 UPAB: 20100714 NOVELTY - The feedthrough (11) has a sealing channel (34) including a channel section (33) connected to a section point (18), and another channel section (35) adjoining a sealing (36). The latter section is formed by a bearing arrangement (24) with an inner guide (25) and an outer guide (26) that are made of a thermally conductive material. The former section is formed as a hollow space between the latter section and a pipe penetration (22). The former section extends between two components (30) made of a material that has thermal conductivity less than that of the latter section. USE - Rotary feedthrough for a liquid working medium i.e. oil, in a solar thermal plant (all claimed). ADVANTAGE - The feedthrough allows feedthrough of a heated liquid working medium at a temperature greater than 400 degree celsius and pressure up to 60 bar. The feedthrough can be utilized under harsh climatic conditions, with high durability.