Repair plug for heat exchanger tubes, especially for steam generators of pressurized-weather nuclear power plants
US4425944A · kind A · utility
7Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1981 |
| Grant date | Jan 17, 1984 |
| Priority date | — |
| Expiry date | Nov 13, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F11/02
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Repair plug for sealing heat exchanger tubes, including a closure plug part being tightly connectable to a heat exchanger tube and having an end for insertion into the heat exchanger tube, and a polisher plug part disposed on the insertion end of the closure plug part axially in front of the insertion end in insertion direction thereof forming a single structural unit with the closure plug part, the polisher plug part remaining in the sealed heat exchanger tube after completing the tight connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.