FIELD: oil producing industry.
SUBSTANCE: invention relates to pipe fittings, namely, to devices with rotary shutoff member and it can be used for automatic closing of high-pressure pipes at emergency pressure rise or drop in wells of oil and condensate fields. Proposed cutoff device contains housing and rotary shutoff member installed in housing. Said member is made in form of two rotary gates, one placed on the other. One of gates is provided with discharge hole, and other gate is blind. It covers hole is discharge gate. Device is furnished with lock holding shutoff member in open position, and sensitive element. The latter is made in form of spring-loaded rod connected with lock. Lock holds discharge rotary gate with hole in open position. Blind rotary gate is provided with stop being installed for engagement with sensitive element rod through stop.
EFFECT: simplified design of cutoff device, provision of reliable operation at pressure drop or rise and overlapping of high-pressure pipeline.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| CUT-OFF APPARATUS | 2006 |
|
RU2313714C1 |
| CUTOFF DEVICE | 1992 |
|
RU2103579C1 |
| VALVING DEVICE | 2005 |
|
RU2300688C1 |
| INTERCEPTING AUTOMATIC VALVE | 2008 |
|
RU2374541C1 |
| ISOLATION STOP AND CONTROL VALVE | 2008 |
|
RU2386880C1 |
| STOP AND CONTROL DEVICE FOR AUTOMATIC ISOLATION OF GAS WELL PIPELINE | 2008 |
|
RU2386882C1 |
| 0 |
|
SU362961A1 | |
| SHUT-OFF ADJUSTING DEVICE | 0 |
|
SU1643836A1 |
| CUTOFF AND CONTROL UNIT | 2006 |
|
RU2326278C1 |
| SHUT-OFF AND REGULATING APPARATUS | 2002 |
|
RU2238466C2 |
