CN2849142Y - High temperature high pressure resistant polish rod sealing device - Google Patents
High temperature high pressure resistant polish rod sealing device Download PDFInfo
- Publication number
- CN2849142Y CN2849142Y CN 200520143504 CN200520143504U CN2849142Y CN 2849142 Y CN2849142 Y CN 2849142Y CN 200520143504 CN200520143504 CN 200520143504 CN 200520143504 U CN200520143504 U CN 200520143504U CN 2849142 Y CN2849142 Y CN 2849142Y
- Authority
- CN
- China
- Prior art keywords
- packing
- polished rod
- main body
- sealing
- press cover
- 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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- Sealing Devices (AREA)
Abstract
The utility model discloses a high-temperature high-pressure resistant polished rod sealing device, which is composed of a main body, a press cap, a packing upper press cover, a sealing packing and a packing lower top ring, wherein the upper end and the lower end of the main body are respectively provided with connecting screw threads; the screw thread on the lower end is connected with a well head oil pipe; a sealing circular bead is arranged on an inner tube wall of the middle; the packing lower top ring, the sealing packing, and the packing upper press cover are orderly arranged in the ring space between a main body on the sealing circular bead of the main body and a polished rod; the press cap is connected with the upper end of the main body through screw threads and is pressed on the upper end of the upper press cover; the sealing packing is deformed; the sealing packing and the ring space between the main body and the polished rod are in an interference fit. When no-work oil sleeve ring space injection technology is carried out, the polished rod and the oil pipe ring space are sealed, preventing high-temperature and high-pressure fluid from leaking and polluting the environment. The utility model can satisfy the accomplishment of production increase, block removing, and no-work technology of material feeding measures of oil wells using oil pumping units, and improves the whole economic benefit of oil fields.
Description
Technical field: the utility model relates to a kind of high temperature high voltage resistant polished rod sealer, belongs to petroleum beam-pumping unit well mouth of oil well device, the well mouth sealing device that uses when being specially adapted to implement not operation oil jacket annular space injection technology.
Background technology: the wellhead polish rod sealer that existing oil pumper oil well uses is made up of packing box and rubber valve, and the sealing device adopts the two-stage sealing, and both sides rubber valve screws replaceable top, back packing, and the sealing device designs withstand voltage 5MPa, no heatproof index.The conventional seals packing is a rectangle, and it is little to screw the back distortion, and withstand voltage difference is little, produces high-temperature, high pressure fluid when implementing not operation oil jacket annular space injection technology, and the rubber valve at rectangle packing and sealer two ends can't be born, and thorn takes place leak, and technology can't be carried out.
Summary of the invention: produce high-temperature, high pressure fluid when implementing not operation oil jacket annular space injection technology in the prior art, the rubber valve at rectangle packing and sealer two ends can't be born, the defective that thorn leaks takes place, but has designed a kind of polished rod sealer of high temperature high voltage resistant.
The utility model is made up of apical ring under body, pressure cap, packing upper press cover, sealed packing, the packing, the body upper/lower terminal is respectively equipped with connecting thread, the lower end screw thread connects the well head oil pipe, middle inner tubal wall is provided with sealing shoulder, apical ring under the packing, sealed packing, packing upper press cover are installed in body on the body sealing shoulder and the annular space between the polished rod successively, pressure cap is connected with the body upper end by screw thread, be pressed in the upper press cover upper end, make sealed packing generation deformation, realize the interference fit of the annular space between sealed packing and body and the polished rod.
The invention effect: the utility model is when implementing not operation oil jacket annular space injection technology, realization is to the sealing of polished rod and oil pipe annular space, prevent leaking and environment pollution of high-temperature, high pressure fluid, satisfy not finishing of operation technique of oil pumper oil well production increasing, de-plugging, dosing measure, improved the oil field whole economic efficiency.
Description of drawings
Accompanying drawing 1 is the utility model structural representation.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described:
The utility model is by body (6), pressure cap (1), packing upper press cover (2), sealed packing (4), apical ring under the packing (5) is formed, on the body (6), following two ends are respectively equipped with connecting thread, the lower end screw thread connects the well head oil pipe, middle inner tubal wall is provided with sealing shoulder, in body (6) on body (6) sealing shoulder and the annular space between the polished rod (7) apical ring under the packing (5) is installed successively, sealed packing (4), packing upper press cover (2), sealed packing (4) is " V " font structure, the design of apical ring (5) upper end has " V " connected in star and " people " word convex that match with " V " font sealed packing (4) to push up under the lower end of packing upper press cover (2) and packing, pressure cap (1) is connected with body (1) upper end by screw thread, be pressed in upper press cover (2) upper end, make sealed packing (4) that deformation take place, realize the interference fit of the annular space between sealed packing (4) and body (6) and the polished rod (7), polished rod (7) and oil pipe annular space are sealed, prevent leaking and environment pollution of high-temperature, high pressure fluid, satisfy the oil pumper oil well production increasing, de-plugging, the dosing measure is finishing of operation technique not.
Claims (2)
1, a kind of high temperature high voltage resistant polished rod sealer, by body (6), pressure cap (1), packing upper press cover (2), sealed packing (4), apical ring under the packing (5) is formed, on the body (6), following two ends are respectively equipped with connecting thread, the lower end screw thread connects the well head oil pipe, it is characterized in that in the middle of body (6), being provided with sealing shoulder on the inner tubal wall, in body (1) on body (6) sealing shoulder and the annular space between the polished rod (7) apical ring under the packing (5) is installed successively, sealed packing (4), packing upper press cover (2), pressure cap (1) is connected with body (6) upper end by screw thread, be pressed in upper press cover (2) upper end, make sealed packing (4) that deformation take place, realize the interference fit of the annular space between sealed packing (4) and body (6) and the polished rod (7).
2, a kind of high temperature high voltage resistant polished rod sealer according to claim 1, it is characterized in that sealed packing (4) for " V " font structure, the design of apical ring (5) upper end has " V " connected in star and " people " word convex that match with " V " font sealed packing (4) to push up under the lower end of packing upper press cover (2) and packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520143504 CN2849142Y (en) | 2005-12-02 | 2005-12-02 | High temperature high pressure resistant polish rod sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520143504 CN2849142Y (en) | 2005-12-02 | 2005-12-02 | High temperature high pressure resistant polish rod sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2849142Y true CN2849142Y (en) | 2006-12-20 |
Family
ID=37521626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520143504 Expired - Fee Related CN2849142Y (en) | 2005-12-02 | 2005-12-02 | High temperature high pressure resistant polish rod sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2849142Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502981A (en) * | 2020-05-15 | 2020-08-07 | 美国杰瑞国际有限公司 | Novel plunger pump hydraulic end assembly structure |
-
2005
- 2005-12-02 CN CN 200520143504 patent/CN2849142Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502981A (en) * | 2020-05-15 | 2020-08-07 | 美国杰瑞国际有限公司 | Novel plunger pump hydraulic end assembly structure |
| CN111502981B (en) * | 2020-05-15 | 2023-08-25 | 美国杰瑞国际有限公司 | Novel plunger pump fluid end assembly 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 |