CN215213407U - Eccentric polished rod sealing device - Google Patents
Eccentric polished rod sealing device Download PDFInfo
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- CN215213407U CN215213407U CN202121495151.0U CN202121495151U CN215213407U CN 215213407 U CN215213407 U CN 215213407U CN 202121495151 U CN202121495151 U CN 202121495151U CN 215213407 U CN215213407 U CN 215213407U
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- sealing
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- ring
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Abstract
The utility model relates to a sealing device field, concretely relates to eccentric polished rod sealing device. Including the lower clutch, lower clutch upper end fixedly connected with detains the cover down, and universal joint lower extreme spheroid part rotates to be connected in the lower clutch upper end, detains the cover down and stops universal joint lower extreme spheroid part, and universal joint lower extreme spheroid part rotates with lower knot cover and contacts, and universal joint lower extreme spheroid part outer fringe and lower clutch rotate sealing connection, have seted up the annular in the straight section of thick bamboo portion in universal joint upper end, are provided with seal assembly in the annular. The utility model discloses, simple structure, convenient operation, easy to assemble can carry out effectual sealing to eccentric polished rod, and sealing performance is good, can prevent that the oil from leaking, can guarantee oil output.
Description
Technical Field
The utility model relates to a sealing device field, concretely relates to eccentric polished rod sealing device.
Background
In the oil development field, when using sealing device to seal the well head, sealing device and well head link firmly, polished rod and well head disalignment, eccentric phenomenon often take place, and the polished rod long-time with the sealing member eccentric wear can lead to well head sealing performance to descend, simultaneously, can not carry out effectual drawing to the oil, use inconvenient, because the polished rod is in the tilt state, the inconvenient installation of current polished rod sealing device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a simple structure, convenient to use can be effectual seals off eccentric polished rod, and sealing performance is good, easy to assemble's eccentric polished rod sealing device.
In order to realize the purpose, the utility model provides a technical scheme is:
an eccentric polished rod sealing device comprises a lower joint, wherein the upper end of the lower joint is fixedly connected with a lower buckle cover, the lower end ball part of a universal joint is rotatably connected in the upper end of the lower joint, the lower buckle cover blocks the lower end ball part of the universal joint, the lower end ball part of the universal joint is rotatably contacted with the lower buckle cover, the outer edge of the lower end ball part of the universal joint is rotatably and hermetically connected with the lower joint, an annular groove is formed in a straight cylinder part at the upper end of the universal joint, a sealing component is arranged in the annular groove, the sealing component comprises a plurality of backing rings, a sealing gasket is arranged between every two adjacent backing rings, the backing rings are fixedly and hermetically connected with the sealing gasket, the inner edges of the backing rings are fixedly and hermetically connected with a sealing sleeve, the inner edges of the sealing sleeve are flush with the inner edge of the sealing gasket, a top ring is slidably arranged in the annular groove above the sealing component, the upper end of the universal joint is in threaded connection with the upper buckle cover, and the upper buckle cover tightly abuts against the sealing component through the top ring, the straight section of thick bamboo part of universal joint upper end rotates and is connected with the swivel, and swivel one end threaded connection has vertical bolt, and the swivel other end is fixed with vertical spring, and the spring lower extreme is detained the cover upper end contact down.
Specifically, a plurality of handles are fixed on the outer edge of the upper buckle cover.
Specifically, a pressure release valve communicated with the lower joint is fixed on the lower joint below the universal joint.
Specifically, an upper sealing groove is formed in the outer edge of the lower end ball body of the universal joint, an upper sealing ring is installed in the upper sealing groove, a lower sealing groove is formed in the inner edge of the upper end of the lower joint, a lower sealing ring is installed in the lower sealing groove, and the lower end ball body of the universal joint is in sealing connection with the lower joint through the upper sealing ring and the lower sealing ring.
Specifically, the outer edge of the top ring and the outer edge of the backing ring are in sliding sealing contact with the groove wall of the annular groove.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses, simple structure, convenient operation, easy to assemble can carry out effectual sealing to eccentric polished rod, and sealing performance is good, can prevent that the oil from leaking, can guarantee oil output.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in figure 1, an eccentric polish rod sealing device comprises a lower joint 1, wherein the upper end of the lower joint 1 is fixedly connected with a lower buckle cover 2, the lower end ball part of a universal joint 6 is rotatably connected in the upper end of the lower joint 1, a pressure release valve 5 communicated with the lower joint 1 is fixed on the lower joint 1 below the universal joint 6, the lower buckle cover 2 blocks the lower end ball part of the universal joint 6, the lower end ball part of the universal joint 6 is rotatably contacted with the lower buckle cover 2, the outer edge of the lower end ball part of the universal joint 6 is provided with an upper sealing groove, an upper sealing ring 4 is arranged in the upper sealing groove, the inner edge of the upper end of the lower joint 1 is provided with a lower sealing groove, a lower sealing ring 3 is arranged in the lower sealing groove, the lower end ball part of the universal joint 6 is hermetically connected with the lower joint 1 through the upper sealing ring 4 and the lower sealing ring 3, a circular groove is arranged in the straight cylinder part at the upper end of the universal joint 6, and a sealing assembly is arranged in the circular groove, the sealing assembly comprises a plurality of backing rings 7, a sealing gasket 8 is arranged between each two adjacent backing rings 7, the backing rings 7 are fixedly and hermetically connected with the sealing gasket 8, a sealing sleeve 9 is fixedly and hermetically connected to the inner edge of each backing ring 7, the inner edge of the sealing sleeve 9 is parallel to the inner edge of each sealing gasket 8, a top ring 10 is arranged in an annular groove above the sealing assembly in a sliding mode, an upper buckling cover 11 is connected to the upper end of the universal joint 6 through threads, the upper buckling cover 11 tightly supports the sealing assembly through the top ring 10, the outer edge of the top ring 10 and the outer edge of the backing ring 7 are in sliding sealing contact with the groove wall of the annular groove, a plurality of handles 12 are fixed to the outer edge of the upper buckling cover 11, a straight cylinder part at the upper end of the universal joint 6 is rotatably connected with a rotating ring 13, one end of the rotating ring 13 is in threaded connection with a vertical bolt 14, the other end of the rotating ring 13 is fixed with a vertical spring 15, and the lower end of the spring 15 is in contact with the upper end of a lower buckling cover 2.
When the utility model is installed, the swivel 13 is rotated to lead the bolt 14 to be far away from the upper end of the eccentric polished rod, then the bolt 14 is rotated to lead the universal joint 6 to incline, when the universal joint 6 inclines, the spring 15 is compressed, when the inclination angle of the universal joint 6 is the same as that of the eccentric polished rod, the eccentric polished rod can run through the device, then the lower joint 1 is fixedly and hermetically connected on a wellhead device, the eccentric polished rod can run through the universal joint 6 by leading the universal joint 6 to incline, the installation is convenient, after the installation, the bolt 14 is separated from the swivel 13, then the universal joint 6 is stabilized, the upper buckle cover 11 is rotated by the handle 12, the upper buckle cover 11 is tightly abutted to the sealing pad 8 by the top ring 10 and the backing ring 7, the sealing pad is compressed and then expands, thereby increasing the pressure of the sealing pad 8 on the eccentric polished rod, the sealing performance is improved, during the up-and down movement of the eccentric polished rod, the universal joint 6 can swing along with the eccentric polished rod, so that eccentric wear can be prevented, and sealing performance can be guaranteed. Through setting up relief valve 5, conveniently carry out the pressure release, convenient subsequent maintenance to lower clutch 1.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. An eccentric polished rod sealing device comprises a lower joint and is characterized in that the upper end of the lower joint is fixedly connected with a lower buckle cover, the lower end ball part of a universal joint is rotatably connected in the upper end of the lower joint and is blocked by the lower buckle cover, the lower end ball part of the universal joint is rotatably contacted with the lower buckle cover, the outer edge of the lower end ball part of the universal joint is rotatably and hermetically connected with the lower joint, a circular groove is formed in a straight barrel part at the upper end of the universal joint, a sealing assembly is arranged in the circular groove and comprises a plurality of backing rings, a sealing gasket is arranged between every two adjacent backing rings, the backing rings are fixedly and hermetically connected with the sealing gaskets, the inner edges of the backing rings are fixedly and hermetically connected with sealing sleeves, the inner edges of the sealing sleeves are flush with the inner edges of the sealing gaskets, a top ring is arranged in the circular groove above the sealing assembly in a sliding manner, the upper end of the universal joint is in threaded connection with the upper buckle cover, the upper buckle cover tightly supports the sealing assembly through the top ring, the straight cylinder part at the upper end of the universal joint is rotatably connected with the rotating ring, one end of the rotating ring is in threaded connection with a vertical bolt, the other end of the rotating ring is fixed with a vertical spring, and the lower end of the spring is in contact with the upper end of the lower buckle cover.
2. The eccentric polish rod sealing device of claim 1, wherein a plurality of handles are fixed to the outer edge of the upper buckle cover.
3. The eccentric polished rod sealing device of claim 1, wherein a pressure relief valve is fixed to the lower joint below the universal joint and is communicated with the lower joint.
4. The eccentric polish rod sealing device of claim 1, wherein an upper sealing groove is formed in an outer edge of the lower end ball portion of the universal joint, an upper sealing ring is installed in the upper sealing groove, a lower sealing groove is formed in an inner edge of the upper end of the lower joint, a lower sealing ring is installed in the lower sealing groove, and the lower end ball portion of the universal joint is in sealing connection with the lower joint through the upper sealing ring and the lower sealing ring.
5. The eccentric polish rod sealing device of claim 1, wherein the top ring outer edge and the backing ring outer edge are in sliding sealing contact with the groove wall of the ring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121495151.0U CN215213407U (en) | 2021-07-01 | 2021-07-01 | Eccentric polished rod sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121495151.0U CN215213407U (en) | 2021-07-01 | 2021-07-01 | Eccentric polished rod sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215213407U true CN215213407U (en) | 2021-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121495151.0U Active CN215213407U (en) | 2021-07-01 | 2021-07-01 | Eccentric polished rod sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215213407U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482901A (en) * | 2022-03-30 | 2022-05-13 | 黄国辉 | Inlet polished rod sealing packing box mounting assembly |
-
2021
- 2021-07-01 CN CN202121495151.0U patent/CN215213407U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482901A (en) * | 2022-03-30 | 2022-05-13 | 黄国辉 | Inlet polished rod sealing packing box mounting assembly |
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