CN201568002U - High-pressure polished rod sealer - Google Patents
High-pressure polished rod sealer Download PDFInfo
- Publication number
- CN201568002U CN201568002U CN2009202813650U CN200920281365U CN201568002U CN 201568002 U CN201568002 U CN 201568002U CN 2009202813650 U CN2009202813650 U CN 2009202813650U CN 200920281365 U CN200920281365 U CN 200920281365U CN 201568002 U CN201568002 U CN 201568002U
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- CN
- China
- Prior art keywords
- seal packing
- packing
- secondary seal
- gland
- polished rod
- 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 - Lifetime
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Abstract
A high-pressure polished rod sealer comprises a pressure cap body, a compression spring, a secondary seal packing cover, a secondary seal packing, a pressing sleeve, a primary seal packing cover, a primary seal packing and a connection collar which are connected in sequence. A packing cavity is arranged at the upper end of the pressing sleeve; the secondary seal packing is mounted in the packing cavity; the primary seal packing cover is connected to the lower end of the pressing sleeve; the secondary seal packing is compressed by the secondary seal packing cover; and the primary seal packing is compressed in the packing cavity of the connection collar through screwing the pressing sleeve, so that a double-seal structure is formed, thereby meeting the requirement of high-pressure operation such as gas injection, pressure holding and the like. The compression spring is mounted between the pressure cap body and the secondary seal packing cover, so that an automatic hold-down mechanism is formed. The secondary seal packing can automatically compensate the clearance caused by abrasion with a polished rod, so that the sealer is prevented from leakage, and environment pollution is avoided; and the utility model has remarkable economic benefits.
Description
Affiliated technical field
The utility model belongs to the well mouth sealing device in the petroleum machinery, is a kind of polished rod sealer, particularly a kind of high pressure polished rod sealer.
Background technology
Some pumpingh well is because of the hole condition complexity, householder method such as need gas injection during exploitation, build the pressure.Existing polished rod sealer because can not be high pressure resistant, do not have an automatic compacting device; need manually regularly to compress; therefore through regular meeting occur thrust not enough, forget that the situation poorly sealed or that under high pressure reveal that human factor brings such as compressing takes place; cause polished rod sealer poorly sealed, have a strong impact on field produces.
Summary of the invention
The purpose of this utility model is a kind of high pressure resistant, polished rod sealer of compressing automatically of design.The highest pressure that bears is 20MPa, and the wearing and tearing of the packing of compensation automatically, thereby prevents to reveal, and prolongs the application life of polished rod sealer.
The purpose of this utility model is achieved in that cap presser, compression spring, secondary seal packing gland, secondary seal packing, gland, primary seal packing gland, primary seal packing, connection box cupling connect successively.
There is a packing chamber upper end of gland, and the secondary seal packing is installed in the packing chamber, and the lower end of gland connects the primary seal packing gland.The secondary seal packing compresses by the secondary seal packing gland;
The primary seal packing is pressed in the packing chamber that connects box cupling by the spinning gland, forms double sealing structure.Can satisfy gas injection in the oil recovery process of oil field, the high pressure need of work such as build the pressure.
Between cap presser and secondary seal packing gland, holddown spring is installed, is formed automatic hold-down mechanism.The secondary seal packing is the gap of compensation because of bringing with the polished rod wearing and tearing automatically, thereby prevent the sealer leakage.
The beneficial effects of the utility model are: utilize secondary seal packing and primary seal packing to form high voltage bearing combination sealing packing, the common single sealed packing structure of its highest withstand voltage pressure ratio improves more than 2 times, the maximum pressure that can bear is 20MPa, can satisfy gas injection in the oil recovery process of oil field fully, the high pressure need of work such as build the pressure.
After adopting automatic hold-down mechanism, the secondary seal packing is the gap of compensation because of bringing with the polished rod wearing and tearing automatically, thereby prevent the sealer leakage, avoids environment pollution, so the utlity model has remarkable economic efficiency.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the structure chart of the automatic hold-down mechanism of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described.
Is example with 28 polished rods with the high pressure sealing device: be made up of cap presser (1), compression spring (2), secondary seal packing gland (3), secondary seal packing (4), gland (5), primary seal packing gland (6), primary seal packing (7), connection box cupling (8).There is a packing chamber upper end of gland (5), and secondary seal packing (4) is installed in the packing chamber, and the lower end of gland (5) connects primary seal packing gland (6).Secondary seal packing (4) compresses by secondary seal packing gland (3); Primary seal packing (7) is pressed in the packing chamber that connects box cupling (8) by spinning gland (5), forms double sealing structure.
Compression spring (2) is set between cap presser (1) and secondary seal packing gland (3), forms automatic hold-down mechanism.
Claims (2)
1. high pressure polished rod sealer, form by cap presser (1), compression spring (2), secondary seal packing gland (3), secondary seal packing (4), gland (5), primary seal packing gland (6), primary seal packing (7), connection box cupling (8), it is characterized in that: there is a packing chamber upper end of gland (5), secondary seal packing (4) is installed in the packing chamber, the lower end of gland (5) connects primary seal packing gland (6), and secondary seal packing (4) compresses by secondary seal packing gland (3); Primary seal packing (7) is pressed in the packing chamber that connects box cupling (8) by spinning gland (5), forms double sealing structure.
2. high pressure polished rod sealer according to claim 1 is characterized in that: compression spring (2) is set between cap presser (1) and secondary seal packing gland (3), forms automatic hold-down mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202813650U CN201568002U (en) | 2009-11-23 | 2009-11-23 | High-pressure polished rod sealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202813650U CN201568002U (en) | 2009-11-23 | 2009-11-23 | High-pressure polished rod sealer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201568002U true CN201568002U (en) | 2010-09-01 |
Family
ID=42660289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202813650U Expired - Lifetime CN201568002U (en) | 2009-11-23 | 2009-11-23 | High-pressure polished rod sealer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201568002U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089538A (en) * | 2015-05-22 | 2015-11-25 | 克拉玛依胜利高原机械有限公司 | Sealing structure of rod oil producing wellhead polish rod |
| CN105089541A (en) * | 2015-08-24 | 2015-11-25 | 中国石油天然气股份有限公司 | Automatic compensation type gapless wellhead sealing device |
| CN106593430A (en) * | 2016-12-13 | 2017-04-26 | 中国石油集团川庆钻探工程有限公司 | Overlapped sealing device for underground sampler control mechanism |
-
2009
- 2009-11-23 CN CN2009202813650U patent/CN201568002U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089538A (en) * | 2015-05-22 | 2015-11-25 | 克拉玛依胜利高原机械有限公司 | Sealing structure of rod oil producing wellhead polish rod |
| CN105089538B (en) * | 2015-05-22 | 2017-12-01 | 克拉玛依胜利高原机械有限公司 | A kind of sealing structure for having bar production wellhead polished rod |
| CN105089541A (en) * | 2015-08-24 | 2015-11-25 | 中国石油天然气股份有限公司 | Automatic compensation type gapless wellhead sealing device |
| CN106593430A (en) * | 2016-12-13 | 2017-04-26 | 中国石油集团川庆钻探工程有限公司 | Overlapped sealing device for underground sampler control mechanism |
| CN106593430B (en) * | 2016-12-13 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Overlapped sealing device for underground sampler control mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |