CN202090893U - Anti-drop bypass-valve - Google Patents
Anti-drop bypass-valve Download PDFInfo
- Publication number
- CN202090893U CN202090893U CN2011202037093U CN201120203709U CN202090893U CN 202090893 U CN202090893 U CN 202090893U CN 2011202037093 U CN2011202037093 U CN 2011202037093U CN 201120203709 U CN201120203709 U CN 201120203709U CN 202090893 U CN202090893 U CN 202090893U
- Authority
- CN
- China
- Prior art keywords
- drop
- bypass
- valve
- lost
- bypass valve
- 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
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Abstract
The utility model relates to oil production machinery and discloses an anti-drop bypass-valve. The anti-drop bypass-valve comprises a bypass-valve casing, a valve sleeve and a valve plug. The bypass-valve casing is connected to an anti-drop casing in threaded mode. Anti-drop steps are respectively disposed on the inner walls of the upper ends of the bypass-valve casing and the anti-drop casing. The rear end of an anti-drop rod is located below the anti-drop steps of the bypass-valve casing and connected to an anti-drop nut in threaded mode. The anti-drop bypass-valve can prevent the portion of threaded connection between the anti-drop casing and the bypass-valve casing from cracking and avoid oil well falling accidents. The anti-drop bypass-valve is easy to assemble and quite practical.
Description
Technical field
The utility model relates to the helicoid hydraulic motor technical field, particularly relates to a kind of anti-lost bypass valve.
Background technology
Helicoid hydraulic motor claims the fixed displacement motor again, is a kind of positive displacement mud motor.Because a series of characteristics of itself structure and aspect of performance are being widely used aspect oil drilling and the well workover.Helicoid hydraulic motor is made up of bypass valve, single screw motor assembly, universal drive shaft assembly and driving-shaft assembly etc.Bypass valve is the accessory of helicoid hydraulic motor, and its effect is that space and ring control are linked up, and changes when single to avoid making a trip and to connect that drilling fluid overflows the pollution rig floor in the drill string, influences operate as normal.Existing bypass valve valve body and anti-lost housing are split-type structural, and both are by being threaded, the fracture in case connecting thread goes wrong, and fracture causes production accident with the lower part well that will directly fall.
The utility model content
For overcoming the deficiencies in the prior art, the utility model provides a kind of anti-lost bypass valve, to have overcome the connecting thread fracture that goes wrong, improves the safety factor of drillng operation.
For realizing above-mentioned technical purpose, the utility model is realized by the following technical solutions: a kind of anti-lost bypass valve, comprise the bypass valve housing, be provided with valve pocket and spool in the bypass valve housing, bypass valve housing upper end is threaded with anti-lost housing, bypass valve housing upper end inwall is provided with anti-lost step, be provided with anti-lost step equally on the upper end inwall of anti-lost housing, against falling bar passes anti-lost housing and rearward end is positioned at below the anti-lost step of bypass valve housing, the against falling bar tail end anti-lost nut that has been threaded.
The utlity model has following beneficial effect: the anti-lost nut of against falling bar is positioned at the bypass valve housing, and the inwall of bypass valve housing is provided with anti-lost step, this structure can prevent that anti-lost housing and bypass valve housing connection of thread from rupturing and the generation falling accident, keep original anti-lost body structure, assembling has significant Practical significance than being easier to.
Description of drawings
Accompanying drawing is the utility model structural representation.
Among the figure, 1, the bypass valve housing, 2, spool, 3, valve pocket, 4, anti-lost nut, 5, anti-lost step, 6, anti-lost housing, 7, against falling bar, 8, anti-lost step.
The specific embodiment
Referring to accompanying drawing, a kind of anti-lost bypass valve, comprise bypass valve housing 1, be provided with valve pocket 3 and spool 2 in the bypass valve housing 1, bypass valve housing 1 upper end is threaded with anti-lost housing 6, and bypass valve housing 1 upper end inwall is provided with anti-lost step 5, is provided with anti-lost step 8 on the upper end inwall of anti-lost housing 6 equally, against falling bar 7 passes anti-lost step that anti-lost housing 6 and rearward end be positioned at bypass valve housing 1 below 5, the against falling bar 7 tail ends anti-lost nut 4 that has been threaded.
Claims (1)
1. anti-lost bypass valve, comprise the bypass valve housing, be provided with valve pocket and spool in the bypass valve housing, bypass valve housing upper end is threaded with anti-lost housing, it is characterized in that: bypass valve housing upper end inwall is provided with anti-lost step, be provided with anti-lost step equally on the upper end inwall of anti-lost housing, against falling bar passes anti-lost housing and rearward end is positioned at below the anti-lost step of bypass valve housing, the against falling bar tail end anti-lost nut that has been threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202037093U CN202090893U (en) | 2011-06-15 | 2011-06-15 | Anti-drop bypass-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202037093U CN202090893U (en) | 2011-06-15 | 2011-06-15 | Anti-drop bypass-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202090893U true CN202090893U (en) | 2011-12-28 |
Family
ID=45365966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202037093U Expired - Fee Related CN202090893U (en) | 2011-06-15 | 2011-06-15 | Anti-drop bypass-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202090893U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835679A (en) * | 2014-03-24 | 2014-06-04 | 盐城市大冈石油工具厂有限责任公司 | Multifunctional screw drill tool bypass valve |
-
2011
- 2011-06-15 CN CN2011202037093U patent/CN202090893U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835679A (en) * | 2014-03-24 | 2014-06-04 | 盐城市大冈石油工具厂有限责任公司 | Multifunctional screw drill tool bypass valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20120615 |