CN87207823U - Bush type spurt-preventing case for motor pumped oil well - Google Patents
Bush type spurt-preventing case for motor pumped oil well Download PDFInfo
- Publication number
- CN87207823U CN87207823U CN 87207823 CN87207823U CN87207823U CN 87207823 U CN87207823 U CN 87207823U CN 87207823 CN87207823 CN 87207823 CN 87207823 U CN87207823 U CN 87207823U CN 87207823 U CN87207823 U CN 87207823U
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- CN
- China
- Prior art keywords
- lining
- packing
- spurt
- oil well
- bush
- 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.)
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Abstract
The utility model provides a spurt-preventing case for motor pumped oil well of the oilfield. The bush type spurt-preventing case for motor pumped oil well changes the original stationary type dead seal cavity to the detachable mobile bush type seal cavity, an upper and a lower mobile bush are added between the press cap of the spurt-preventing case for motor pumped oil well and a packing set, and the packing set is packed in the circular type bush; the bushes and the packing set are exposed when opening the press cap. The utility model has the advantages of convenient replacement, simple device, high reliability and time saving and labor saving; the work efficiency can be improved more than 20 times.
Description
The utility model is a kind of wellhead assembly that is used for rod-pumped well, i.e. oil pumper well head bush type blowout prevention box.
At present the blowout prevention box that the oil-field oil pumper well head is commonly used is mainly by pressure ring (1), pressure cap (2), packing (5) and main body compositions such as (6).Its packing (5) in the dead space of main body (6), screw the screw thread of pressure cap (2) and main body (6) after, by pressure cap (2) packing (5) is compressed.The well head blowout prevention box of this class is changed packing wastes time and energy, and changing packing usually needs two people, and the packing of every replacing a bite well needs 1.5～2 hours approximately, and oil well need stop production 1～1.5 hour.
The utility model has been done improvement at above-mentioned drawback, provides a kind of simple in structure, and sealing is reliable, oil pumper well head bush type blowout prevention box easy to install.
Oil pumper well head bush type blowout prevention box has been done redesign to the part-structure of above-mentioned blowout prevention box, with original fixed dead annular seal space, change removable movable seal with buss chamber into, oil pumper well head bush type blowout prevention box is by pressure ring (1), pressure cap (2), movable lining (3) and the following lining (4) gone up, packing (5), main body (6) is formed.Its principal character is to be added with movable lining (3) and the following lining (4) gone up between pressure cap (2) and packing (5), and packing (5) is on movable in lining (3) and the following lining (4).Pressure cap (2) and main body (6) are docked by screw thread and are pushed down the movable lining (3) of going up after screwing, and compress down lining (4) by last lining (3), rotate pressure ring (1) and compress packing (5).Last lining (3) and following lining (4) are garden ring type lining, the total length in the lining and the size of internal diameter, can decide according to the specific series of oil pumper well head blowout prevention box, its external diameter is at least 60～70 millimeters, wall thickness is at least 4.0～5.0 millimeters, and last lining (3) is connected for plug-in mounting with following lining (4).
When needs are changed packings (5), unclamp pressure ring (1) earlier, open pressure cap (2) after, movable going up outside lining (3) and following lining (4) and packing (5) be exposed to, the replacing packing is very convenient.When using bush type blowout prevention box, change packing and only need 1 people, 7～10 minutes is the packing of interchangeable intact a bite well, only need stop production 4～5 minutes.After using bush type blowout prevention box, can improve work efficiency more than 20 times, and have simple in structurely, sealing is reliable, and advantage easy to install has shortened nonproductive time, has improved the utilization rate of oil well, has increased the individual well crude output.
Description of drawings: accompanying drawing 1 is the structural representation of oil pumper well head bush type blowout prevention box.(1) is pressure ring among the figure, (2) pressure cap, and (3) go up lining, and (4) are lining down, (5) packing, (6) main body.
Claims (2)
1, a kind of bush type blowout prevention box of oil pumper well head, it is by pressure ring [1], pressure cap [2], packing [5] and main body compositions such as [6], it is characterized in that being added with between pressure cap [2] and packing [5] movable lining [3] and the following lining [4] gone up, packing [5] lining [3] on movable is in the following lining [4].
2, oil pumper well head bush type blowout prevention box according to claim 1, it is characterized in that lining (3) and following lining (4) are garden ring type lining, the total length of lining and the size of internal diameter, can decide according to the specific series of oil pumper well head blowout prevention box, its external diameter is at least 60～70 millimeters, wall thickness is at least 4.0～5.0 millimeters, and last lining (3) is connected for plug-in mounting with following lining (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87207823 CN87207823U (en) | 1987-05-04 | 1987-05-04 | Bush type spurt-preventing case for motor pumped oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87207823 CN87207823U (en) | 1987-05-04 | 1987-05-04 | Bush type spurt-preventing case for motor pumped oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87207823U true CN87207823U (en) | 1988-01-20 |
Family
ID=4823203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87207823 Withdrawn CN87207823U (en) | 1987-05-04 | 1987-05-04 | Bush type spurt-preventing case for motor pumped oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87207823U (en) |
-
1987
- 1987-05-04 CN CN 87207823 patent/CN87207823U/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |