CN211115896U - Wellhead lubrication reinforcing device of polished rod - Google Patents
Wellhead lubrication reinforcing device of polished rod Download PDFInfo
- Publication number
- CN211115896U CN211115896U CN201921721735.8U CN201921721735U CN211115896U CN 211115896 U CN211115896 U CN 211115896U CN 201921721735 U CN201921721735 U CN 201921721735U CN 211115896 U CN211115896 U CN 211115896U
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- China
- Prior art keywords
- polished rod
- section
- rod sleeve
- oil storage
- storage cavity
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- Expired - Fee Related
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Abstract
The wellhead lubricating and reinforcing device of the polished rod is used for wellhead lubricating oil. Including installing riser, the polished rod sleeve pipe in well head valves upper end, install packing seat, the packing pressure cap in polished rod sleeve pipe upper end to and set up polished rod chamber upper segment, polished rod chamber hypomere in the polished rod sleeve pipe, characterized by: a section of polished rod sleeve tail section extends downwards from the lower end of the polished rod sleeve, an elastic oil storage cavity is movably connected to the upper surface of the polished rod sleeve tail section, the lower end of the elastic oil storage cavity is connected with an anti-spraying cover, the middle part of the elastic oil storage cavity is provided with a corrugated section, the upper part of the elastic oil storage cavity is provided with a clamping section, and the top end of the clamping section is provided with a ring edge; a quick-connection grease nipple is arranged on the outer wall of the polish rod sleeve below the packing seat, and the inner end of the quick-connection grease nipple is communicated with the upper section of the polish rod cavity; the outer side of the lower end of the polish rod sleeve is provided with sleeve threads, the outer side of the upper end of the vertical pipe is provided with vertical pipe threads, and the polish rod sleeve and the vertical pipe are connected through a double-thread connector. The eccentric wear phenomenon of the polished rod mode is prevented.
Description
Technical Field
The utility model relates to a lubricating arrangement of beam-pumping unit polished rod in the oil recovery well head, the lubricated reinforcing apparatus of well head of especially polished rod.
Background
In the prior art, the lubricating of a polish rod of an oil pumping unit in an oil extraction well head mainly depends on grease injected by a grease nipple arranged above a packing gland, and lubricating equipment is not arranged in a polish rod sleeve. And only the grease nipple is unreasonable in arrangement position, so that the lubricating effect of the polish rod is weak: although the grease injected into the grease nipple above the packing pressing cap can contact the polish rod, the polish rod firstly presses packing in the cap through the packing when going down, the packing plays a role in sealing, the packing is in close contact with and rubs the polish rod, the grease is scraped, namely the polish rod passes through the packing and the surface can not have the grease, the polish rod and the inner wall of a well head are only dry-ground, the polish rod is worn at an excessive speed, and normal use is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the wellhead lubrication reinforcing device of the polish rod is provided to overcome the defects of the technology.
The above purpose can be realized by the following technical scheme:
lubricated reinforcing means of well head of polished rod, including installing riser, the polished rod sleeve pipe in well head valves upper end, install packing seat, the packing pressure cap in polished rod sleeve pipe upper end to and set up polished rod chamber upper segment, polished rod chamber hypomere in the polished rod sleeve pipe, characterized by: a section of polished rod casing tail section 11 extends downwards from the lower end of the polished rod casing 13, an elastic oil storage cavity 22 is movably connected to the upper surface of the polished rod casing tail section 11, the lower end of the elastic oil storage cavity 22 is connected with an anti-spraying cover 3, the middle part of the elastic oil storage cavity is provided with a corrugated section 7, the upper part of the elastic oil storage cavity is provided with a clamping section 8, and the top end of the clamping section 8 is provided with a ring edge 9; a quick-connection grease nipple 21 is arranged on the outer wall of the polish rod sleeve 13 below the packing seat 15, and the inner end of the quick-connection grease nipple 21 is communicated with the upper section of the polish rod cavity; the outer side of the lower end of the polish rod sleeve 13 is provided with a sleeve thread 10, the outer side of the upper end of the vertical pipe is provided with a vertical pipe thread 4, and the polish rod sleeve 13 and the vertical pipe 2 are connected through a double-thread connector 6.
The advantages are that: the lubricating effect in the polish rod sleeve is enhanced, and the polish rod is prevented from eccentric wear.
Drawings
Fig. 1 is a partial sectional view of the present invention.
The reference numerals in fig. 1 are as follows: 1. the automatic oil-water mixing device comprises an inlet valve group, 2, a vertical pipe, 3, a blowout cover, 4, vertical pipe threads, 5, an oil sac tail section, 6, a double-thread joint, 7, a corrugated section, 8, a clamping section, 9, a ring edge, 10, sleeve threads, 11, a polish rod sleeve tail section, 12, a polish rod cavity lower section, 13, a polish rod sleeve, 14, a polish rod cavity upper section, 15, a packing seat, 16, packing seat threads, 17, a packing pressing cap, 18, a polish rod transition cavity, 19, a polish rod through hole, 20, a packing cavity, 21, a quick-connection grease nipple and 22, and an elastic oil storage cavity.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 shows an embodiment of the present invention, in fig. 1, an existing wellhead valve set is utilized, a double-screw joint 6 is connected between a riser 2 and a polish rod casing 13, a polish rod casing tail section 11 is arranged at the lower end of the polish rod casing 13 and extends downwards, an elastic oil storage cavity 22 is movably connected above the polish rod casing tail section 11, the elastic oil storage cavity 22 is formed by injection molding of oil-resistant plastic, the lower end of the elastic oil storage cavity 22 is connected with an anti-spraying cover 3, the middle part of the elastic oil storage cavity is provided with a corrugated section 7, the upper part of the elastic oil storage cavity is provided with a clamping section 8, the top end of the clamping section 8 is provided with a ring edge 9 which can be; the outer wall of the polish rod sleeve 13 below the packing seat 15 is provided with a quick-connection grease nipple 21. The original position is arranged on the packing gland 17, and the grease on the polish rod can be scraped by packing filler, so that the polish rod does not work. The inner end of the quick-connection grease nipple 21 is communicated with the upper section of the polish rod cavity, grease can be scraped and remained in a gap of the upper section of the polish rod cavity when the polish rod moves upwards, and grease is smeared on the gap to play a lubricating role when the polish rod moves downwards; the outer side of the lower end of the polish rod sleeve 13 is provided with a sleeve thread 10, the outer side of the upper end of the vertical pipe is provided with a vertical pipe thread 4, and the polish rod sleeve 13 and the vertical pipe 2 are connected through a double-thread connector 6. When the polished rod is broken, oil gas in the well with pressure goes upwards to push the anti-spraying cover 3 to move upwards, the elastic oil cavity is closed (blocked), the gap of the polished rod is covered, and the oil gas is reduced or prevented from being sprayed out from the tail section 11 of the polished rod casing.
Claims (1)
1. Lubricated reinforcing means of well head of polished rod, including installing riser, the polished rod sleeve pipe in well head valves upper end, install packing seat, the packing pressure cap in polished rod sleeve pipe upper end to and set up polished rod chamber upper segment, polished rod chamber hypomere in the polished rod sleeve pipe, characterized by: a section of polished rod casing tail section (11) extends downwards from the lower end of the polished rod casing (13), an elastic oil storage cavity (22) is movably connected to the upper surface of the polished rod casing tail section (11), the lower end of the elastic oil storage cavity (22) is connected with an anti-spraying cover (3), the middle part of the elastic oil storage cavity is provided with a corrugated section (7), the upper part of the elastic oil storage cavity is provided with a clamping section (8), and the top end of the clamping section (8) is provided with a ring edge (9); a quick-connection grease nipple (21) is arranged on the outer wall of the polish rod sleeve (13) below the packing seat (15), and the inner end of the quick-connection grease nipple (21) is communicated with the upper section of the polish rod cavity; the outer side of the lower end of the polish rod casing pipe (13) is provided with a casing thread (10), the outer side of the upper end of the vertical pipe is provided with a vertical pipe thread (4), and the polish rod casing pipe (13) and the vertical pipe (2) are connected through a double-thread joint (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921721735.8U CN211115896U (en) | 2019-10-09 | 2019-10-09 | Wellhead lubrication reinforcing device of polished rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921721735.8U CN211115896U (en) | 2019-10-09 | 2019-10-09 | Wellhead lubrication reinforcing device of polished rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211115896U true CN211115896U (en) | 2020-07-28 |
Family
ID=71688363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921721735.8U Expired - Fee Related CN211115896U (en) | 2019-10-09 | 2019-10-09 | Wellhead lubrication reinforcing device of polished rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211115896U (en) |
-
2019
- 2019-10-09 CN CN201921721735.8U patent/CN211115896U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200728 Termination date: 20211009 |