CN202249886U - Self-lubricating wellhead sealer - Google Patents
Self-lubricating wellhead sealer Download PDFInfo
- Publication number
- CN202249886U CN202249886U CN2011202513846U CN201120251384U CN202249886U CN 202249886 U CN202249886 U CN 202249886U CN 2011202513846 U CN2011202513846 U CN 2011202513846U CN 201120251384 U CN201120251384 U CN 201120251384U CN 202249886 U CN202249886 U CN 202249886U
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- China
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- urceolus
- packing
- oil
- wall
- inner core
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Abstract
The utility model relates to a self-lubricating wellhead sealer, which is applied to the self lubrication of an oil extraction wellhead of an oil-gas field and the sealing of a polish rod. The outer wall of an outer tube is provided with two transverse pipes, propulsion screw rods are fixedly arranged in the two transverse pipes through screw threads, the inner ends of the propulsion screw rods pass through the outer tube, two annular separation plates are parallelly welded on the inner wall of the outer tube, two semicircular third-stage packings are arranged between the two annular separation plates, an annular second-state packing is arranged on the upper plane of the upper annular separation plate, the upper part of the second-state packing is provided with an inner tube, the upper part of a disc arranged at the upper end of the inner tube is provided with a first-stage packing, the top of the outer tube is fixed with a press cover through screw threads, the inner wall of the middle part of the press cover is in a cone shape, an oil inlet joint and an oil discharge joint are fixedly arranged at the outer tube wall, and an oil supplementing hole is arranged on the inner tube wall. The self-lubricating wellhead sealer has the effects that an oil inlet opening and an oil discharge opening are added on the outer tube wall, lubricating oil can enter an annular space between the outer tube and the inner tube and can lubricate the polish rod through the oil supplementing hole, and the effect that the polish rod is sealed while the polish rod is lubricated is realized.
Description
Technical field
The utility model relates to oil gas field oil recovery technique field, and particularly a kind of device that in oil well production, the pumpingh well polished rod is sealed and lubricates is a kind of self-lubricating wellhead sealing device.
Background technology
Utilizing oil pumper to recover the oil in the manufacturing process, oil pumper drives polished rod and pumps, and crude oil, water, gas three-phase liquid are pumped into ground from the shaft bottom.The employing sealer seals polished rod and lubricates.Packing in the wellhead sealing device can play sealing function, and the well liquid of extraction can play the effect of lubricated polished rod continuously.But because the pump efficiency that oil well has is lower than 30%, oil well is in and intermittently goes out oil condition, when the oil well dry tap; Polished rod and packing frictional heating are damaged packing; Reduce the packing_seal performance, oil leakage phenomenon just appears in well head when oil well is fuel-displaced, has brought inconvenience for the management of oil well.
The utility model content
The purpose of the utility model is: a kind of self-lubricating wellhead sealing device is provided, increases seal oil device internal circulation system, can be lubricated polished rod when realizing the sealing polished rod, imitate when solving the oil well dry tap and draw packing to sting oily phenomenon.
The technical scheme that the utility model adopts is: the self-lubricating wellhead sealing device; Mainly form by gland, one-level packing, fuel inlet fitting, urceolus, inner core, oil extraction joint, transverse tube, end cap, augering screw, secondary packing and three grades of packings; There is screw thread the lower end of urceolus, can be connected on the well head; It is characterized in that: symmetry and vertical urceolus are welded with two transverse tubes on the outer wall of urceolus, and transverse tube has internal thread, in two transverse tubes, is fixed with an augering screw respectively through screw thread, and urceolus is passed in the inner of augering screw; End at transverse tube is fixed with end cap; Two toroidal membranes of parallel welding on the inwall of urceolus; Two semiorbicular three grades of packings are arranged between two toroidal membranes, and two toroidal membranes become an annular packing after relatively; The secondary packing of an annular is arranged on plane on the toroidal membrane on top, on the top of secondary packing inner core is arranged, the two ends up and down of inner core are welded with the disk of annular, and end disc is pressed on the last plane of secondary packing under the inner core; The one-level packing is arranged at the top of end disc on the inner core, and the one-level packing has centre bore for cylinder shape, and the outer wall of one-level packing is conical; Screw top at urceolus is fixed with gland, and there is centre bore the gland upper end, and gland middle part inwall is conical; Be fixed with fuel inlet fitting on outer tube wall top, spherical ball-and-seat is arranged in the fuel inlet fitting, be fixed with the oil extraction joint in the urceolus bottom, lubrication oil gets into the annular space between urceolus and the inner core from fuel inlet fitting, can flow out from the oil extraction joint; A repairing hole is arranged on inner tube wall, and the lubrication oil that gets into annular space between urceolus and the inner core can be that polished rod is lubricated through the repairing hole.
Pumpingh well has played lubrication between packing and polished rod at dry tap or intermittently under the fuel-displaced situation, effectively prolongs packing and polished rod application life.
The beneficial effect of the utility model: the utility model self-lubricating wellhead sealing device; Oil-feed and oil drain out on the wall of urceolus, have been increased; Lubrication oil can get between urceolus and the inner core annular space and can be that polished rod is lubricated through the repairing hole; Can be lubricated polished rod when realizing the sealing polished rod, imitate when solving the oil well dry tap and draw packing to sting oily phenomenon.
Description of drawings
Fig. 1 is the utility model self-lubricating wellhead sealing device structural profile sketch map.
Among the figure, 1-gland, 2-one-level packing, 3-fuel inlet fitting, 4-urceolus, 5-inner core, 6-oil extraction joint, 7-transverse tube, 8-end cap, 9-augering screw, 10-repairing hole, 11-secondary packing, three grades of packings of 12-.
The specific embodiment
Embodiment 1: with a self-lubricating wellhead sealing device is example, and the utility model is done further explain.
Consult Fig. 1.The utility model self-lubricating wellhead sealing device mainly is made up of gland 1, one-level packing 2, fuel inlet fitting 3, urceolus 4, inner core 5, oil extraction joint 6, transverse tube 7, end cap 8, augering screw 9, secondary packing 11 and three grades of packings 12.There is screw thread the lower end of urceolus 4, can be mounted on the well head.
Symmetry and vertical urceolus 4 are welded with two transverse tubes 7 on the outer wall of urceolus 4, and transverse tube 7 has internal thread, in two transverse tubes 7, is fixed with an augering screw 9 respectively through screw thread, and urceolus 4 is passed in the inner of augering screw 9; Be fixed with end cap 8 in the end of transverse tube 7.Two toroidal membranes of parallel welding on the inwall of urceolus 4.After having 12, two toroidal membranes of two semiorbicular three grades of packings relatively between two toroidal membranes, become the annular packing that an internal diameter is 30mm; The secondary packing 11 that on plane on the toroidal membrane on top, an annular internal diameter to be arranged be 30mm has inner core 5 on the top of secondary packing 11, and the two ends up and down of inner core 5 are welded with the disk of annular, and 5 times end discs of inner core are pressed on the last plane of secondary packing 11.One-level packing 2 is arranged at the top of end disc on the inner core 5, and one-level packing 2 is the centre bore of 30mm for cylinder shape has diameter, and the outer wall of one-level packing 2 is conical.Screw top at urceolus 4 is fixed with gland 1, and it is the centre bore of 31mm that there is diameter gland 1 upper end, and gland 1 middle part inwall is conical.
Be fixed with fuel inlet fitting 3 on urceolus 4 wall tops, spherical ball-and-seat is arranged in the fuel inlet fitting 3, be fixed with oil extraction joint 6 in urceolus 4 bottoms; The repairing hole 10 that on inner core 5 walls, a diameter to be arranged be 5mm.
Claims (1)
1. self-lubricating wellhead sealing device; Mainly be made up of gland (1), one-level packing (2), fuel inlet fitting (3), urceolus (4), inner core (5), oil extraction joint (6), transverse tube (7), end cap (8), augering screw (9), secondary packing (11) and three grades of packings (12), there is screw thread the lower end of urceolus (4); It is characterized in that: symmetry and vertical urceolus (4) are welded with two transverse tubes (7) on the outer wall of urceolus (4); Transverse tube (7) has internal thread; In two transverse tubes (7), be fixed with an augering screw (9) respectively through screw thread, urceolus (4) is passed in the inner of augering screw (9); Be fixed with end cap (8) in the end of transverse tube (7); Two toroidal membranes of parallel welding on the inwall of urceolus (4); Two semiorbicular three grades of packings (12) are arranged between two toroidal membranes, and two toroidal membranes become an annular packing after relatively; The secondary packing (11) of an annular is arranged on plane on the toroidal membrane on top, on the top of secondary packing (11) inner core (5) is arranged, the two ends up and down of inner core (5) are welded with the disk of annular, and inner core (5) end disc down is pressed on the last plane of secondary packing (11); One-level packing (2) is arranged at the top that inner core (5) is gone up end disc, and one-level packing (2) has centre bore for cylinder shape, and the outer wall of one-level packing (2) is conical; Screw top at urceolus (4) is fixed with gland (1), and there is centre bore gland (1) upper end, and gland (1) middle part inwall is conical; Be fixed with fuel inlet fitting (3) on urceolus (4) wall top, fuel inlet fitting has spherical ball-and-seat in (3), is fixed with oil extraction joint (6) in urceolus (4) bottom; On inner core (5) wall, a repairing hole (10) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202513846U CN202249886U (en) | 2011-07-15 | 2011-07-15 | Self-lubricating wellhead sealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202513846U CN202249886U (en) | 2011-07-15 | 2011-07-15 | Self-lubricating wellhead sealer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202249886U true CN202249886U (en) | 2012-05-30 |
Family
ID=46111145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202513846U Expired - Lifetime CN202249886U (en) | 2011-07-15 | 2011-07-15 | Self-lubricating wellhead sealer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202249886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015569A (en) * | 2016-07-07 | 2016-10-12 | 成都中寰流体控制设备股份有限公司 | Static conical surface sealing structure |
-
2011
- 2011-07-15 CN CN2011202513846U patent/CN202249886U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015569A (en) * | 2016-07-07 | 2016-10-12 | 成都中寰流体控制设备股份有限公司 | Static conical surface sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |