FIELD: machine building.
SUBSTANCE: invention relates to pipeline valves and accessories, particularly to shut-off gates. Proposed device comprises closed inflatable cylindrical chamber, its enclosure being made from flexible material and features ledge-like circular seals. Cylindrical part of inflatable chamber is made from polymer-coated reinforced material, e.g. rubber-coated fabric, cut to make cutting line be located at an angle to fabric warp varying from 25° to 75°. Aforesaid circular seals have outer layer made from material that feature Shore hardness less than 10, and inner sealing edges with Shore hardness exceeding 50.
EFFECT: reliable cutting-of of pipelines.
4 dwg
| Title | Year | Author | Number |
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|
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|
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| RUBBER-CORD SHUT-OFF DEVICE FOR SHUTTING-OFF PIPE LINES | 1999 |
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| SEALING RUBBER-CORD DEVICE FOR SHUTTING-OFF PIPE LINES | 2005 |
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| PNEUMATIC SEALING DEVICE FOR TEMPORARY CLOSING OF PIPELINES | 2002 |
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| DEVICE FOR SHUTTING PIPELINE OFF | 2004 |
|
RU2269056C1 |
| DAMPING DEVICE | 2015 |
|
RU2636958C2 |
