CN2604514Y - Self-sealing well head packer - Google Patents
Self-sealing well head packer Download PDFInfo
- Publication number
- CN2604514Y CN2604514Y CN 03212008 CN03212008U CN2604514Y CN 2604514 Y CN2604514 Y CN 2604514Y CN 03212008 CN03212008 CN 03212008 CN 03212008 U CN03212008 U CN 03212008U CN 2604514 Y CN2604514 Y CN 2604514Y
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- Prior art keywords
- gland
- fuse
- sealing
- utility
- model
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- Expired - Fee Related
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Abstract
The utility model discloses a sealing device of wellhead casing used at an oil field----a well self-sealing device. The utility model is embodied by the following technical scheme. A well self-sealing device comprises an enclosure (1), a gland (2) and an elastic sealing core (3). The elastic sealing core (3) is embedded in the enclosure (1) and pressed by a gland (2) with an inside diameter less than the inside diameter of a raised edge (4) of the gland (2) and the enclosure (1) which is connected with the gland (2). The utility model is characterized by simple structure and high but stable sealing pressure. The utility model has the advantages that a slight abrasion can be compensated and the sealing core can be easily replaced.
Description
Technical field: the utility model relates to a kind of oil field with well head bobbin seal device, is specifically related to self-sealing blowout preventer.
Background technology: there is big, the heavy shortcoming of volume in the self-sealing blowout preventer that uses on the oil field at present, and the sealing fuse of self-sealing blowout preventer is manual coiling, can not make general purpose accessory, inconvenience during replacing, and sealing load is low, and the effect instability.
The utility model content: the utility model is changed trouble in order to overcome the obstructed usefulness of sealing fuse in the prior art, and the defective that sealing load is low provides a kind of sealing fuse can make general purpose accessory, and it is convenient to change the sealing fuse, the self-sealing blowout preventer that sealing load is high.The utility model is realized by following proposal, a kind of self-sealing blowout preventer, it comprises housing 1, gland 2, elastic packing fuse 3, described elastic packing fuse 3 is embedded in the housing 1 and is glanded 2 and pushes down, the internal diameter of elastic packing fuse 3 is less than the internal diameter of gland 2, the internal diameter of elastic packing fuse 3 is less than the internal diameter of the rib 4 of housing 1, and gland 2 is connected with housing 1.The utlity model has simple in structure, sealing load is high, sealing effectiveness is stable, mild wear can compensate, seal fuse can make general purpose accessory, change sealing fuse advantage easily.
Description of drawings: Fig. 1 is the structural representation of embodiment of the present utility model, and Fig. 2 is the schematic diagram that the utility model uses on oil well.
The specific embodiment: the utility model embodiment is specified below in conjunction with Fig. 1 and Fig. 2.The utility model is made up of housing 1, gland 2, elastic packing fuse 3; Described elastic packing fuse 3 is embedded in the housing 1, and being glanded 2 pushes down, elastic packing fuse 3 is made by elastic wear-resisting rubber, can be compressed, the internal diameter of elastic packing fuse 3 is less than the internal diameter of gland 2, and the internal diameter of elastic packing fuse 3 has external screw thread less than the internal diameter of the rib 4 of housing 1 on the cylindrical of gland 2, have internal thread on the internal diameter of housing 1, the external screw thread of gland 2 is connected with the internal thread of housing 1.The situation that the utility model uses on oil well as shown in Figure 2, housing 1 of the present utility model is by being bolted on the well head sleeve pipe 6, oil pipe 5 passes the inner via hole of elastic packing fuse 3, with elastic packing fuse 3 outwards extruding along the circumferential direction, tightly be attached to the external surface of oil pipe 5 after the elastic packing fuse 3 generation elastic deformations, reach the purpose in sealed well muzzle pipe ring shape space 7.When 3 wearing and tearing of elastic packing fuse are not serious, just can the compensate for wear amount by screwing gland 2.When elastic packing fuse 3 serious wear, spin off gland 2, remove old elastic packing fuse 3, penetrate new elastic packing fuse 3 from the upper end of oil pipe 5, can finish more changing jobs.
Claims (2)
1, a kind of self-sealing blowout preventer, it comprises housing (1), gland (2), elastic packing fuse (3), described elastic packing fuse (3) is embedded in the housing (1) and is glanded (2) and pushes down, it is characterized in that the internal diameter of the internal diameter of elastic packing fuse (3) less than gland (2), the internal diameter of elastic packing fuse (3) is less than the internal diameter of the rib (4) of housing (1), and gland (2) is connected with housing (1).
2, self-sealing blowout preventer according to claim 1 is characterized in that having external screw thread on the cylindrical of gland (2), has internal thread on the internal diameter of housing (1), and the external screw thread of gland (2) is connected with the internal thread of housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03212008 CN2604514Y (en) | 2003-03-17 | 2003-03-17 | Self-sealing well head packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03212008 CN2604514Y (en) | 2003-03-17 | 2003-03-17 | Self-sealing well head packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2604514Y true CN2604514Y (en) | 2004-02-25 |
Family
ID=34159313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03212008 Expired - Fee Related CN2604514Y (en) | 2003-03-17 | 2003-03-17 | Self-sealing well head packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2604514Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387016A (en) * | 2017-09-04 | 2017-11-24 | 江苏雄越石油机械设备制造有限公司 | Hanging device for slips casing |
-
2003
- 2003-03-17 CN CN 03212008 patent/CN2604514Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387016A (en) * | 2017-09-04 | 2017-11-24 | 江苏雄越石油机械设备制造有限公司 | Hanging device for slips casing |
| CN107387016B (en) * | 2017-09-04 | 2019-09-10 | 江苏雄越石油机械设备制造有限公司 | Hanging device for slips casing |
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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: 20040225 Termination date: 20100317 |