CN203114226U - Self-sealing packing box - Google Patents
Self-sealing packing box Download PDFInfo
- Publication number
- CN203114226U CN203114226U CN 201320013334 CN201320013334U CN203114226U CN 203114226 U CN203114226 U CN 203114226U CN 201320013334 CN201320013334 CN 201320013334 CN 201320013334 U CN201320013334 U CN 201320013334U CN 203114226 U CN203114226 U CN 203114226U
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- CN
- China
- Prior art keywords
- self
- sealing
- packing box
- box body
- packing
- 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 a self-sealing packing box. The self-sealing packing box comprises a packing pressing cap, a gland, a packing box body and a packing, and adopts a two-level sealing structure, wherein a self-sealing pressing cap connected with the packing box body into a whole is arranged at the bottom of the packing box body, the self-sealing pressing cap is in threaded connection with a self-sealing base connector, a self-sealing box body is formed between the self-sealing pressing cap and the self-sealing base connector, a hollow sealing ring is arranged in the box body, and the self-sealing base connector is connected with a well mouth Christmas tree through threads. The self-sealing packing box adopts the two-level sealing structure, has a self-sealing function, does not need to relieve pressure when a packing is replaced, and can be reused for long time, thereby having the advantages of improving work efficiency, eradicating environmental pollution and avoiding oil gas loss.
Description
Technical field
The utility model belongs to well recovery part of appliance technical field, specifically is a kind of when changing packing
The self-sealing packing box that does not need emptying.
Background technology
In the oil field, having the bar producing well to change packing is oil recovery worker's day-to-day work.At present, most of well mouth of oil well are not with self-seal device, or have self-seal device, in use have the problem that lost efficacy easily yet.When causing each replacing packing, overbottom pressure in the well need be bled off.High or the broad-minded oil well for pressure, putting just to press needs for a long time, has so not only polluted environment, loses a large amount of crude oil and natural gas, has also taken a lot of production times, causes the decline of crude output.
The utility model content
The purpose of this utility model is to provide a kind of can need not to put pressure when changing packing, have self-styled function, and can long-term reusable self-sealing packing box.
Realize that the technical scheme that the purpose of this utility model is taked is: this self-sealing packing box comprises packing pressure cap, Glan, packing box body and packing, adopt the two-stage hermetically-sealed construction, be provided with the self-styled pressure cap that is connected as a single entity with the packing box body in the bottom of packing box body, self-styled pressure cap is connected with self-styled base joint screw thread, constitute self-styled box body between the two, box body is built-in with the hollow seal ring, and self-styled base joint is connected with the well head production tree by screw thread.
One side of described self-styled pressure cap is provided with the alignment pin that is connected with self-styled base joint.
Described hollow seal ring adopts the hollow seal annulus of TPU material.
Self-sealing packing box according to such scheme is made adopts the two-stage hermetically-sealed construction, has self-styled function, can when changing packing, need not to put pressure, and can realize long-term the repeated use, and increase work efficiency thereby reach, stop the beneficial effect of environment pollution and oil gas loss.This packing box is simple in structure, and is easy to operate, dependable performance.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Referring to Fig. 1, each label in the accompanying drawing is: self-sealing packing box of the present utility model, top is common packing box structure, comprise packing pressure cap 2, Glan 3, packing box body 4 and packing 5, the utility model adopts the two-stage hermetically-sealed construction, be to be provided with the self-styled pressure cap 6 that is connected as a single entity with packing box body 4 in the bottom of packing box body 4, self-styled pressure cap 6 is threaded with self-styled base joint 8, constitute self-styled box body between the two, box body is built-in with hollow seal ring 7, and that this hollow seal ring 7 adopts is wear-resisting, the hollow seal annulus of oil resistant, ageing-resistant TPU class material.Self-styled base joint 8 is connected with the well head production tree by screw thread, is provided with the alignment pin 9 that is connected with self-styled base joint in a side of self-styled pressure cap 6.When needs are changed packing in the self-styled box body, take off alignment pin 9, rotate self-styled box pressing cap 6 and press down hollow seal ring 7, hollow seal ring 7 is crushed to extend to the center and holds polished rod 1 tightly and realize self-styled.After replacing was finished, the self-styled box pressing cap of backward rotation 6 was set up alignment pin 9 to the origin-location, hollow seal ring 7 recovers oneself state and breaks away from polished rod 1 under self favorable elasticity, during normal use, hollow seal ring 7 is noncontact with polished rod 1, can realize long-term repeated use.
Claims (3)
1. self-sealing packing box, comprise packing pressure cap, Glan, packing box body and packing, it is characterized in that: this self-sealing packing box adopts the two-stage hermetically-sealed construction, be provided with the self-styled pressure cap that is connected as a single entity with the packing box body in the bottom of packing box body, self-styled pressure cap is connected with self-styled base joint screw thread, constitute self-styled box body between the two, box body is built-in with the hollow seal ring, and self-styled base joint is connected with the well head production tree by screw thread.
2. self-sealing packing box according to claim 1, it is characterized in that: a side of described self-styled pressure cap is provided with the alignment pin that is connected with self-styled base joint.
3. self-sealing packing box according to claim 1 is characterized in that: the hollow seal annulus of described hollow seal ring employing TPU material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320013334 CN203114226U (en) | 2013-01-11 | 2013-01-11 | Self-sealing packing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320013334 CN203114226U (en) | 2013-01-11 | 2013-01-11 | Self-sealing packing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203114226U true CN203114226U (en) | 2013-08-07 |
Family
ID=48894586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320013334 Expired - Fee Related CN203114226U (en) | 2013-01-11 | 2013-01-11 | Self-sealing packing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203114226U (en) |
-
2013
- 2013-01-11 CN CN 201320013334 patent/CN203114226U/en not_active Expired - Fee Related
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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: 20130807 Termination date: 20140111 |