Method for sealing high-temperature heat pipe
US11389912B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2021 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Aug 13, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28D15/0283
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method for sealing a high-temperature heat pipe includes: (1) necking and reducing two ends of the heat pipe separately, so as to obtain a necked end and a reduced end; (2) sealing the necked end by laser welding or electron beam welding; (3) placing the heat pipe in an inert gas glove box, and pouring a working medium without impurities into the heat pipe; (4) heating the heat pipe, connecting the reduced end to a vacuum pump, pumping gas inside the heat pipe by the vacuum pump to vacuumize the heat pipe, such that pressure in an inner cavity of the heat pipe reaches a target pressure, and flattening the reduced end; and (5) sealing an opening of the flattened reduced end by electron beam welding or laser welding, so as to obtain the high-temperature heat pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.