CN2662029Y - Special purpose microresistance check valve for oilfield - Google Patents
Special purpose microresistance check valve for oilfield Download PDFInfo
- Publication number
- CN2662029Y CN2662029Y CN 200320105029 CN200320105029U CN2662029Y CN 2662029 Y CN2662029 Y CN 2662029Y CN 200320105029 CN200320105029 CN 200320105029 CN 200320105029 U CN200320105029 U CN 200320105029U CN 2662029 Y CN2662029 Y CN 2662029Y
- Authority
- CN
- China
- Prior art keywords
- utility
- model
- valve
- oil
- flap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a check valve which is specially used in oilfields. The utility model is designed mainly to solve the problem that the oil in prior oil pipeline routes flows backwards and is easy to damage equipment while oil pump stops. The utility model comprises a valve body, a valve base, a valve flap, a valve stem, a guide sleeve, a spring and other components. A damping chamber is arranged in the inner cavity of the valve body has and the guide sleeve is arranged in the damping chamber. The utility model has the advantages of preventing oil from backward flow and preventing equipment from being damaged. The utility model also has the advantages of simple structure, safety and reliableness.
Description
Technical field: the utility model relates to a kind of oil field safety check.
Background technique: when oil pump was stopped transport, the oil in the pipeline flow backwards in the pipeline road of oil field, easily caused facility to destroy, and influence is operation normally.
Summary of the invention: the purpose of this utility model provides a kind of oil that can stop and flows backwards the special-purpose little resistance safety check in safe and reliable oil field.
Above-mentioned purpose is achieved in that it comprises valve body, valve seat etc., and valve seat is contained on the valve body, and flap is fixed on the valve rod, and spring is contained between valve body and the flap, and valve rod is contained in the guide pin bushing, and we establish dampening chamber at body cavity, and guide pin bushing is contained in the dampening chamber.When oil pump was opened, the pressure of pipeline oil was opened flap, and oil flows through in valve, because the damping function of dampening chamber, flap band valve rod slowly moves down, and realized slow opening; When oil pump stops suddenly, flap is under the effect of the spring and the oil that flows backwards, flap is contacted rapidly with valve seat, because damping function, valve rod band flap slowly rises, realize Slow Close, flow backwards by oil, prevent that facility from damaging, therefore the utlity model has simple in structure, good seal performance, safe and reliable advantage.
Description of drawings: accompanying drawing is a generalized section of the present utility model.
Embodiment: with reference to accompanying drawing, valve seat 2 is contained on the valve body 1, and flap 3 is fixed on the valve rod 4, and spring 6 is contained between valve body and the flap, and valve rod is contained in the guide pin bushing 5, establishes dampening chamber 7 at body cavity, and guide pin bushing is contained in the dampening chamber.
Claims (1)
1, the special-purpose little resistance safety check in oil field comprises valve body (1), valve seat (2), flap (3), valve rod (4), guide pin bushing (5), spring (6), it is characterized in that establishing dampening chamber (7) at body cavity, and guide pin bushing is contained in the dampening chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320105029 CN2662029Y (en) | 2003-10-28 | 2003-10-28 | Special purpose microresistance check valve for oilfield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320105029 CN2662029Y (en) | 2003-10-28 | 2003-10-28 | Special purpose microresistance check valve for oilfield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2662029Y true CN2662029Y (en) | 2004-12-08 |
Family
ID=34341065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320105029 Expired - Fee Related CN2662029Y (en) | 2003-10-28 | 2003-10-28 | Special purpose microresistance check valve for oilfield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2662029Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287558A (en) * | 2011-08-19 | 2011-12-21 | 青岛金黄海集装箱有限公司 | Check valve with safety valve |
-
2003
- 2003-10-28 CN CN 200320105029 patent/CN2662029Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287558A (en) * | 2011-08-19 | 2011-12-21 | 青岛金黄海集装箱有限公司 | Check valve with safety valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1980711A3 (en) | Downhole deployment valves | |
| AU2003251819A1 (en) | Check valve | |
| US5201371A (en) | Back pressure flapper valve | |
| US8104540B2 (en) | Completion tool | |
| NO20021434D0 (en) | Device at valve for piston machine such as pump and compressor | |
| RU2006118152A (en) | CHEMICAL REAGENT VALVE INTEGRATED INTO THE REMOVABLE DOWN BUTT VALVE | |
| MY164386A (en) | Flow stop valve and method | |
| CN106704618B (en) | High-performance gate valve | |
| CN211649182U (en) | Lift type slowly-closed silencing check valve | |
| CA2364329A1 (en) | Equalizing flapper for downhole safety valves | |
| CN2662029Y (en) | Special purpose microresistance check valve for oilfield | |
| CN201236973Y (en) | Tension rod type soft-sealing single-flow valve | |
| CN201301987Y (en) | Micro-resistance check valve | |
| CN112081966B (en) | Swing check valve | |
| CN201100461Y (en) | Combined control dual petal butterfly check valve | |
| US20090236099A1 (en) | Multiple Spring Subsurface Safety Valve | |
| CN204592441U (en) | Safety check | |
| CN2584980Y (en) | Special check valve for oil field | |
| CN202188180U (en) | Check valve with safety valve | |
| CN204985822U (en) | Resilient -sealed ball valve | |
| CN209180162U (en) | A kind of self-locking jig equipped with safety valve | |
| CN216867136U (en) | Column hydraulic control one-way valve | |
| CN111102386A (en) | Piston type check valve | |
| CN208311571U (en) | A kind of check valve with supporting mechanism | |
| CN216447484U (en) | Overflow valve for ultrahigh-pressure electric pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |