| 主权项 |
1. An absorber tube comprising:
a central metal tube; a glass sleeve tube surrounding the central metal tube; a glass-metal transition element disposed on an end of the glass sleeve tube, wherein the central metal tube and the glass-metal transition element are movable relative to one another in a longitudinal direction and connected to one another by an expansion compensating device, the expansion compensating device being disposed at least partially in an annular space between the central metal tube and the glass-metal transition element, the annular space having an annular space section constructed between the glass-metal transition element and the attachment element, wherein the expansion compensating device having an inner end and an outer end, the inner end being fastened to an attachment element, the attachment element being connected to the glass-metal transition element, the outer end being fastened to the central metal tube, wherein, in axial plan view, the attachment element and the expansion compensating device have a circular ring-shaped end face, wherein the attachment element has an annular disc on which the expansion compensating device is fastened; and a shielding device having a first annular disc-shaped section, the shielding device being disposed in the annular space, wherein, in the axial direction, the annular disc-shaped section is disposed with a spacing before the end face. |
