CN103089191A - Oilwell sleeve pressure test plug sealing structure - Google Patents
Oilwell sleeve pressure test plug sealing structure Download PDFInfo
- Publication number
- CN103089191A CN103089191A CN 201110333496 CN201110333496A CN103089191A CN 103089191 A CN103089191 A CN 103089191A CN 201110333496 CN201110333496 CN 201110333496 CN 201110333496 A CN201110333496 A CN 201110333496A CN 103089191 A CN103089191 A CN 103089191A
- Authority
- CN
- China
- Prior art keywords
- pressure test
- annular groove
- test plug
- sealing ring
- sealing
- 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.)
- Pending
Links
Images
Landscapes
- Pressure Vessels And Lids Thereof (AREA)
- Gasket Seals (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses an oilwell sleeve pressure test plug sealing structure which is composed of an annular groove on the outer wall of a pressure test plug and a sealing ring matched with the annular groove. The cross section of the annular groove on the outer wall of the pressure test plug is swallow-tailed, namely the annular groove is wide inside and narrow outside, the sealing ring with the cross section in a shape same as the annular groove is mounted in the annular groove in an embedded manner, and the outer surface of the sealing ring and an inner wall matched with a to-be-tested sleeve form a sealing pair. The sealing ring is mounted in the annular groove on the outer wall of the pressure test plug in an embedded manner, and mounting position is stable, so that even when the pressure test plug and the sleeve are mounted and demounted, the sealing ring cannot roll in the annular groove to avoid damages to the sealing ring, sealing performance of the sealing structure is effectively improved, the service life of the sealing structure is prolonged effectively, and production cost is saved. The oilwell sleeve pressure test plug sealing structure is especially suitable for large-caliber pressure test plug sleeves needed to be mounted and demounted frequently.
Description
Technical field
The present invention relates to a kind of hermetically-sealed construction, specifically, the present invention relates to a kind of sealing structure for pressure test plug of oil well casing.
Background technology
In order to ensure the safety of oil well, sleeve pipe must be made customary experiments of sealing performance before installing.At first experiments of sealing performance fills in respectively the dress pressure test plug at the sleeve pipe to be checked two ends mouth of pipe, and the pressure test plug of compression is sealed and matched by ring outer wall hermetically-sealed construction and internal surface of sleeve pipe.The sealing structure for pressure test plug of prior art is made of annular groove setting-in O RunddichtringO, and this hermetically-sealed construction is simple, and sealing performance is reliable, can satisfy the pressure testing requirement.Because of the particularity of O type hermetically-sealed construction, O RunddichtringO installation site is not stable, and the frequent loading and unloading of pressure test plug easily make the O RunddichtringO roll in annular groove, and even displacement damages.Although the O RunddichtringO on the replacing pressure test plug can recover the sealing performance of hermetically-sealed construction, increase maintenance load and cost of production.The hermetically-sealed construction of prior art is unfavorable for the production scene construction, is necessary to be further improved.
Summary of the invention
The present invention proposes a kind of hermetically-sealed construction reasonable mainly for the deficiency of existing hermetically-sealed construction rapid wear, and the seal installation site is stable, the sealing structure for pressure test plug of oil well casing of good sealing effect and long service life.
The present invention is achieved through the following technical solutions technical goal.
Sealing structure for pressure test plug of oil well casing, it is comprised of annular groove on the pressure test plug outer wall and the sealing ring that matches.Its improvements are: on described pressure test plug outer wall, the annular groove lateral cross section is dovetail shaped, it is the annular groove inner wide and outer narrow, the sealing ring that the lateral cross section shape is identical is inlaid in annular groove, and the inwall that the sealing ring external surface matches with sleeve pipe to be checked consists of sealing pair.
The present invention compared with prior art has following good effect:
1, lateral cross section is that the sealing ring embedding structure of dovetail shaped annular groove and identical cross-sectional shape is simple, makes easily;
2, has certain elastic compensating ability, good sealing effect after the sealing ring pressurized of inner wide and outer narrow;
3, sealing ring is inlaid in pressure test plug outer wall annular groove, and the installation site is stable, even when pressure test plug and sleeve pipe loading and unloading, sealing ring can not roll in annular groove, avoid sealing ring to damage, sealing performance and the application life of effective lift-off seal structure, thus saved cost of production.
Description of drawings
Fig. 1 is structural profile schematic diagram of the present invention.
Fig. 2 is the local enlarged diagram in Fig. 1 A place.
The specific embodiment
The invention will be further described below in conjunction with Fig. 1.
Sealing structure for pressure test plug of oil well casing shown in the drawings, it is comprised of annular groove on pressure test plug 1 outer wall and the sealing ring 2 that matches.It is that on described pressure test plug 1 outer wall, the annular groove lateral cross section is dovetail shaped that the technology of the present invention is improved, i.e. the annular groove inner wide and outer narrow.The sealing ring 2 that the lateral cross section shape is identical is inlaid in annular groove, and the inwall that sealing ring 2 external surfaces match with sleeve pipe to be checked consists of sealing pair.Because sealing ring 2 is inlaid on pressure test plug 1 outer wall in annular groove, the installation site is stable, even when pressure test plug 1 and sleeve pipe charge and discharge operations, sealing ring 2 can not roll in annular groove, avoid sealing ring 2 to damage, sealing performance and the application life of effective lift-off seal structure, thus cost of production saved.
The present invention can be used as the heavy caliber sealing structure for pressure test plug of similar sleeve pipe, has similar effect.
Claims (1)
1. sealing structure for pressure test plug of oil well casing, it is comprised of annular groove on pressure test plug (1) outer wall and the sealing ring (2) that matches; It is characterized in that: on described pressure test plug (1) outer wall, the annular groove lateral cross section is dovetail shaped, it is the annular groove inner wide and outer narrow, the sealing ring that the lateral cross section shape is identical (2) is inlaid in annular groove, and the inwall that sealing ring (2) external surface matches with sleeve pipe to be checked consists of sealing pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110333496 CN103089191A (en) | 2011-10-28 | 2011-10-28 | Oilwell sleeve pressure test plug sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110333496 CN103089191A (en) | 2011-10-28 | 2011-10-28 | Oilwell sleeve pressure test plug sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103089191A true CN103089191A (en) | 2013-05-08 |
Family
ID=48202269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110333496 Pending CN103089191A (en) | 2011-10-28 | 2011-10-28 | Oilwell sleeve pressure test plug sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103089191A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107053722A (en) * | 2017-03-22 | 2017-08-18 | 泉州玉环模具有限公司 | One kind even helps PU injection moulding shoe moulds |
-
2011
- 2011-10-28 CN CN 201110333496 patent/CN103089191A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107053722A (en) * | 2017-03-22 | 2017-08-18 | 泉州玉环模具有限公司 | One kind even helps PU injection moulding shoe moulds |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102537576B (en) | High Temperature High Pressure slip-type expansion joint | |
| CN204060602U (en) | A kind of bimetallic (spring cone) seal formula casing head | |
| CN104755817B (en) | Piston ring | |
| CN106195026A (en) | A kind of bearing cap device for sealing magnetic fluid | |
| CN203703226U (en) | Double-piston double-blocking hard sealing valve seat with metal C-shaped ring sealing structure | |
| CN103089191A (en) | Oilwell sleeve pressure test plug sealing structure | |
| CN202273634U (en) | Sealing structure for pressure test plug of oil well casing | |
| CN103899871A (en) | Anti-explosion and high-pressure-resisting rotation compensator | |
| CN201265650Y (en) | Spring composite sealing ring | |
| CN103607064A (en) | Sealing structure at shaft through position of high-temperature-resisting and high-pressure-resisting motor | |
| CN105298394A (en) | Roller bit bearing W-shaped sealing structure | |
| CN202266233U (en) | Compression packer rubber | |
| CN203067217U (en) | Packing and sealing device for high pressure gas | |
| CN201963875U (en) | Seal assembly for elastic compensation ring | |
| CN103711929A (en) | Ball valve | |
| CN204061858U (en) | A kind of piston packing of anti-high pressure | |
| CN203963091U (en) | A kind of top-loading ball valve | |
| CN202249889U (en) | Auxiliary sealing device for casing hanger | |
| CN203656251U (en) | Ball valve | |
| CN201554414U (en) | High-performance gas storage wellhead | |
| CN205743833U (en) | A kind of high pressure VR blocks up | |
| CN205936669U (en) | Stand with card key formula jar mouth dustproof mechanism | |
| CN102661265A (en) | High-pressure padding sealing device and method for compressor | |
| CN202220850U (en) | Multi-layer hydraulic cylinder mechanism | |
| CN202040074U (en) | Soft sealing short pump barrel multifunctional oil pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130508 |