METHOD FOR PRODUCING A SOLAR POWER RECEIVING TUBE AND RESULTING TUBE

摘要

The invention relates to a method for producing a solar power receiving tube and to the resulting tube, which is of the type that includes: an outer glass tube, an inner metal absorber through which a heat-transfer fluid flows, and an intermediate area in which the vacuum is produced. The method comprises the following steps:
i. Production of the metal tubes
ii. Production of the glass tubes: namely a longer central glass tube and two shorter glass tubes for the ends.
iii. Process for the production of the Kovar rings or glass-metal transition elements
iv. Process for the welding of the Kovar rings to the tubes
v. Process for the production of the bellows or expansion compensating devices assemblies
vi. Assembly of the products obtained in the preceding operations
vii. Creation of the vacuum and anodising of the welds