FIELD: machine building.
SUBSTANCE: resilient shell comprises cylindrical and two end parts and compressed air feed pipe. Cylindrical part outer surface is provided with a set of sealing annular ledges and separate annular ledge located closer to end part than said set of ledges for pressure to applied to said separate ledge in operation. Said separate ledge is located from extreme ledge of said set at the distance larger than that between ledges of the set and features height exceeding that of set ledges.
EFFECT: better tightness.
5 cl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SILENCING DEVICE FOR A TIGHTNESS PIPELINE OVERLAP | 2018 |
|
RU2675954C1 |
| RUBBERIZED CORD DEVICE FOR SHUT-OFF OF PIPELINES AND METHOD OF ITS MANUFACTURE | 1992 |
|
RU2037727C1 |
| ELASTIC CASING FOR PRESSURE TIGHT PIPELINE SHUTDOWN | 2009 |
|
RU2418231C1 |
| PLUGGING RUBBER AND CORD UNIT TO SHUT OFF PIPE-LINES | 1997 |
|
RU2131078C1 |
| RUBBERIZED CORD DEVICE FOR SHUT-OFF OF PIPELINES | 1992 |
|
RU2037729C1 |
| RUBBER-CORD SHUT-OFF DEVICE FOR SHUTTING-OFF PIPE LINES | 1999 |
|
RU2179682C2 |
| PLUGGING DEVICE FOR BLANKING A PIPELINE (VERSIONS) | 2003 |
|
RU2267690C2 |
| SUPPRESSING DEVICE FOR OVERLAPPING PIPE-LINE | 2000 |
|
RU2174639C1 |
| FOLDING PLUG FOR PIPELINE | 2003 |
|
RU2251046C2 |
| DAMPING DEVICE | 2015 |
|
RU2636958C2 |
