CN2436645Y - High pressure difference encapsulation tube - Google Patents
High pressure difference encapsulation tube Download PDFInfo
- Publication number
- CN2436645Y CN2436645Y CN 00214146 CN00214146U CN2436645Y CN 2436645 Y CN2436645 Y CN 2436645Y CN 00214146 CN00214146 CN 00214146 CN 00214146 U CN00214146 U CN 00214146U CN 2436645 Y CN2436645 Y CN 2436645Y
- Authority
- CN
- China
- Prior art keywords
- packing element
- rubber barrel
- utility
- model
- high pressure
- 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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- Gasket Seals (AREA)
Abstract
The utility model relates to a sealing rubber barrel structure capable of bearing high differential pressure, which comprises a righting rubber barrel and a sealing rubber barrel, wherein, a spring is additionally arranged in the interior of one end of the righting rubber barrel. By means of the spring at the end part, the phenomenon of humeral projection of the rubber barrel is effectively prevented from happening at the time of high differential pressure. The problems that the rubber barrels are damaged because of humeral projection and the sealing effect is influenced are avoided. Meanwhile, at the time of unsealing, the utility model can help the rubber barrels to recover to the original state, and is convenient for unsealing. In addition, the righting rubber barrel and the sealing rubber barrel adopt conical surface cooperation. The utility model has compact structure and reasonable force receiving, and improves the capability of bearing high differential pressure for the sealing rubber barrel structure.
Description
The utility model relates to rubber sealing device, relates in particular to a kind of High Pressure Difference cartridge that is applied to packer.
At present, conventional cartridge combining structure separates with spacer ring for setting upright between packing element and the cartridge, sets upright the inner no metallic framework of packing element, and this structure exists that withstand voltage difference is low, the shortcoming of restoring force difference.
The purpose of this utility model provides a kind of shortcoming that can overcome above-mentioned prior art, has the High Pressure Difference cartridge high pressure resistant, that restoring force is strong.
The purpose of this utility model can reach like this: comprise the High Pressure Difference cartridge of setting upright packing element and cartridge, it is set upright between packing element and the cartridge and adopts cone match, and there is metallic framework the inside of setting upright packing element one end.
The purpose of this utility model can also reach by following measure: the metallic framework of setting upright the inner sulfuration of packing element is cylindrical draft helical spring, being fixed together end to end of cylindrical helical spring.
During The field, packing element produces axial crushing deformation under the hydraulic thrust effect, packing element contacts with casing wall when being compressed to a certain degree, increase along with pressure, packing element will produce a kind of trend of axial flow, set upright the packing element end spring this moment and hindered packing element flowing to instrument and shell clearance, simultaneously, set upright the cone match between packing element and the cartridge, the axial compression that the cartridge two ends are born is converted into the normal pressure between packing element and casing wall effectively, thereby has guaranteed that packing element can bear the ability of High Pressure Difference.During deblocking, the power of compression packing element is released, and packing element relies on the restoring force of self and the convergent force reinstatement of end spring, makes packer successfully trip out ground.
Drawing of the present utility model is described as follows:
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model packing element force analysis figure.
The utility model is described in further detail below in conjunction with accompanying drawing:
As Fig. 1, Fig. 2, spring 1 is at the inner end of setting upright packing element 2, cartridge about in the of 3 with set upright packing element and be cone match (conical surface among the figure is 15 °), the axial force that can effectively the cartridge two ends be born is converted into the normal pressure between packing element and casing wall, improves the sealing performance of packing element.
The utility model has the following advantages compared to existing technology:
1. improved the withstand voltage poor ability of packing element, the packing performance of packer is improved;
2. prolong the service life of packing element, increased the access times of packing element, reduced cost.
Claims (2)
1. a High Pressure Difference cartridge comprises and sets upright packing element and cartridge, it is characterized in that setting upright between packing element and the cartridge and adopts cone match, and setting upright packing element one end inside has metallic framework.
2. High Pressure Difference cartridge according to claim 1, the metallic framework that it is characterized in that setting upright packing element inside is a cylindroid helical-coil extension spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00214146 CN2436645Y (en) | 2000-04-05 | 2000-04-05 | High pressure difference encapsulation tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00214146 CN2436645Y (en) | 2000-04-05 | 2000-04-05 | High pressure difference encapsulation tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2436645Y true CN2436645Y (en) | 2001-06-27 |
Family
ID=33580318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00214146 Expired - Fee Related CN2436645Y (en) | 2000-04-05 | 2000-04-05 | High pressure difference encapsulation tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2436645Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481449A (en) * | 2014-11-14 | 2015-04-01 | 中国石油天然气股份有限公司 | Compound packer rubber barrel and preparation method thereof |
| CN105114027A (en) * | 2015-08-06 | 2015-12-02 | 东北石油大学 | Flexible self-sealed anti-humeral-protrusion compression packer |
| CN105401913A (en) * | 2015-12-18 | 2016-03-16 | 宝鸡市元亨石油设备有限责任公司 | Packer rubber sleeve outburst prevention structure |
-
2000
- 2000-04-05 CN CN 00214146 patent/CN2436645Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481449A (en) * | 2014-11-14 | 2015-04-01 | 中国石油天然气股份有限公司 | Compound packer rubber barrel and preparation method thereof |
| CN105114027A (en) * | 2015-08-06 | 2015-12-02 | 东北石油大学 | Flexible self-sealed anti-humeral-protrusion compression packer |
| CN105114027B (en) * | 2015-08-06 | 2018-01-05 | 东北石油大学 | A kind of anti-shoulder compression packer of flexible self sealss |
| CN105401913A (en) * | 2015-12-18 | 2016-03-16 | 宝鸡市元亨石油设备有限责任公司 | Packer rubber sleeve outburst prevention structure |
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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 |