CN202381018U - Oil pumping unit wellhead sealer capable of self-lubricating - Google Patents
Oil pumping unit wellhead sealer capable of self-lubricating Download PDFInfo
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- CN202381018U CN202381018U CN2011205034256U CN201120503425U CN202381018U CN 202381018 U CN202381018 U CN 202381018U CN 2011205034256 U CN2011205034256 U CN 2011205034256U CN 201120503425 U CN201120503425 U CN 201120503425U CN 202381018 U CN202381018 U CN 202381018U
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- seal
- sealing drum
- connection block
- annular
- sphere connection
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Abstract
An oil pumping unit wellhead sealer capable of self-lubricating is applied to wellhead sealing for oil production in an oil field. A ball head seal body is arranged at the upper end of a spherical surface connecting base; a connecting cap is connected with the upper end of the spherical surface connecting base to form a universal ball joint; an annular lower press cover is arranged at the top part of the ball head seal body; the upper end of the ball head seal body is in threaded connection with a seal sleeve, and the seal sleeve tightly compresses the lower press cover; the seal sleeve is cylindrical and internally provided with a diaphragm plate, the lower part of the diaphragm plate of the seal sleeve forms a middle seal cavity, and the upper part of the diaphragm plate of the seal sleeve forms an upper seal cavity; a press cap is connected to the upper end of the seal sleeve in a threaded manner; an annular upper press cover is arranged at the top part of the seal sleeve; the press cap compresses the lower press cover; and the upper press cover is provided with a central hole. The oil pumping unit wellhead sealer has the effects as follows: the oil pumping unit wellhead sealer is mounted at the wellhead, and is filled with seal packing and lubricating grease. A polished rod is ceaselessly lubricated by the lubricating grease in the middle seal cavity, so that the friction between the polished rod and the seal packing is reduced. And further, the ball head seal body is free from limitation of angles and matched with an eccentric hole to achieve the eccentricity adjusting effect.
Description
Technical field
The utility model relates to oil recovery technique field, oil field, and particularly the production wellhead mechanically-sealing apparatus is the self-lubricated rod-pumped well sealer for mouth of a kind of ability.Be applicable to that there is the bar deep well oil pumping in the oil field, the particularly suitable oil well is the fuel-displaced and bad sucker rod pumping well of centering intermittently.
Background technology
At present, in the oil recovery process of oil field, most oil wells adopt pumping production, and belonging to has bar to recover the oil.Oil field development is to the middle and later periods, and the liquid outlet quantity of most of oil wells declines to a great extent, and some oil well output does not almost reach 1 ton/day, and intermittency occurs.Not extracting out under the oil condition, cause dry grinding between polished rod and the sealed packing, the serious wear of sealed packing.In addition,, cause polished rod and well head to misalign, more quickened the well head sealed packing rate of wear owing to reasons such as oil pumper installation question, immerge problem, casing deformations.The frequent change of having to well head sealed packing had both made to guarantee that like this well head does not run oil, even had caused the well site environment pollution.
The utility model content
The purpose of the utility model is: provide a kind of ability self-lubricated rod-pumped well sealer for mouth; In sealer, pack into sealed packing and being installed on the well mouth of oil well; The indoor lubricating grease of grease pocket carries out uninterruptedly lubricated to polished rod; Reduce the frictional force of polished rod and sealed packing, reduced the wearing and tearing of sealed packing to greatest extent.
The technical scheme that the utility model adopts is: the self-lubricated rod-pumped well sealer for mouth of ability; Comprise sphere Connection Block, bulb seal, attachment cap, lower cover, sealing drum, pressure cap and upper press cover; There is internal thread the lower end of sphere Connection Block, can be connected on the well head; There is external screw thread at the center of sphere Connection Block upper end, and sphere Connection Block inner upper end has spherical; In the upper end of sphere Connection Block a bulb seal is arranged, there is ballhead the lower end of sphere Connection Block; The upper end of sphere Connection Block connects an attachment cap, and attachment cap has internal thread for the annular lower end, and the attachment cap inner upper end has spherical, and the spherical of attachment cap is pressed in the ballhead top of bulb seal, forms a universal ball joint; It is characterized in that: the stepped central hole is arranged in the bulb seal, and the little centre bore in bottom is that polished rod passes through the hole, and the big centre bore in top is the lower seal chamber; An annular lower cover is arranged at the top of bulb seal; There is external screw thread the upper end of bulb seal, and the upper end screw thread of bulb seal is connected with sealing drum, and sealing drum compresses lower cover; Sealing drum is that cylindrical inner has diaphragm, and middle annular seal space is formed at sealing drum diaphragm bottom, and annular seal space is formed at sealing drum diaphragm top; There is external screw thread the upper end of sealing drum, and screw thread is connected with pressure cap in the upper end of sealing drum; An annular upper press cover is arranged at the top of sealing drum; Pressure cap compresses lower cover; Upper press cover has centre bore.In lower seal chamber and last annular seal space, sealed packing is installed, polished rod passes in sealed packing; Can fill stop-leak compound in the middle annular seal space.
In order to improve the sealing between sphere Connection Block and the bulb seal, sealing ring is directly arranged at bulb seal and sphere Connection Block.
Add lubricating grease for ease, horizontal screw is arranged on the wall of sealing drum, laterally the position of screw is relative with middle annular seal space, laterally is fixed with grease nipple on the screw.
The beneficial effect of the utility model: the self-lubricated rod-pumped well sealer for mouth of the utility model ability, be installed in well head top, inside installs sealed packing and lubricating grease, just can drop into oil pumping and producing.Lubricating grease in the middle annular seal space carries out uninterruptedly lubricated to polished rod, reduced the frictional force of polished rod and sealed packing, reduces the wearing and tearing of sealed packing, improves sealing effectiveness.Lower seal chamber and the built-in sealed packing of last annular seal space seal the lubricating grease chamber.Avoid lubricating grease to expose and pollution, also polished rod is played certain sealing simultaneously and do usefulness.The bulb seal does not receive angle limits, cooperates with eccentric orfice, reaches the tuningout effect.
Description of drawings
Fig. 1 is that the utility model can self-lubricated rod-pumped well sealer for mouth structural profile sketch map.
Among the figure, 1-sphere Connection Block, 2-bulb seal, 3-attachment cap, 4-lower cover, 5-sealing drum, 6-pressure cap, 7-upper press cover, 8-sealing ring, 9-lower seal chamber, annular seal space among the 10-, the last annular seal space of 11-.
The specific embodiment
Embodiment 1: with a self-lubricated rod-pumped well sealer for mouth of ability is example, and the utility model is done further explain.
Consult Fig. 1.The self-lubricated rod-pumped well sealer for mouth of ability comprises sphere Connection Block 1, bulb seal 2, attachment cap 3, lower cover 4, sealing drum 5, pressure cap 6 and upper press cover 7.
There is internal thread the lower end of sphere Connection Block 1, can be connected on the well head.There is external screw thread at the center of sphere Connection Block 1 upper end, and sphere Connection Block 1 inner upper end has spherical; In the upper end of sphere Connection Block 1 a bulb seal 2 is arranged, there is ballhead the lower end of sphere Connection Block 1; The upper end of sphere Connection Block 1 connects an attachment cap 3, and attachment cap 3 has internal thread for the annular lower end, and attachment cap 3 inner upper end have spherical, and the spherical of attachment cap 3 is pressed in the ballhead top of bulb seal 2, forms a universal ball joint.With sphere Connection Block 1 sealing ring 8 is arranged directly at bulb seal 2.The stepped central hole is arranged in the bulb seal 2, the little center-hole diameter 40mm in bottom, little centre bore is that polished rod passes through the hole, the big centre bore in top is lower seal chamber 9; The sealed packing of nine routines of packing in the lower seal chamber 9.At the top of bulb seal 2 an annular lower cover 4 is arranged, annular lower cover 4 center-hole diameters are 40mm.There is external screw thread the upper end of bulb seal 2, and the upper end screw thread of bulb seal 2 is connected with sealing drum 5, and sealing drum 5 compresses lower cover 4; Sealing drum 5 is for cylindrical inner has diaphragm, and middle annular seal space 10 is formed at sealing drum 5 diaphragm bottoms, the middle annular seal space 10 200ml lubricating grease of packing into.Annular seal space 11 is formed at sealing drum 5 diaphragm tops; The sealed packing of three routines of packing in the last annular seal space 11.There is external screw thread the upper end of sealing drum 5, and screw thread is connected with pressure cap 6 in the upper end of sealing drum 5; An annular upper press cover 7 is arranged at the top of sealing drum 5; Pressure cap 6 compresses lower cover 4; It is the centre bore of 40mm that upper press cover 7 has diameter.A horizontal screw is arranged on the wall of sealing drum 5, and laterally the position of screw is relative with middle annular seal space 10, laterally is fixed with grease nipple on the screw.
Claims (3)
1. the self-lubricated rod-pumped well sealer for mouth of ability comprises sphere Connection Block (1), bulb seal (2), attachment cap (3), lower cover (4), sealing drum (5), pressure cap (6) and upper press cover (7), and there is internal thread the lower end of sphere Connection Block (1); There is external screw thread at the center of sphere Connection Block (1) upper end, and sphere Connection Block (1) inner upper end has spherical; In the upper end of sphere Connection Block (1) a bulb seal (2) is arranged, there is ballhead the lower end of sphere Connection Block (1); The upper end of sphere Connection Block (1) connects an attachment cap (3); Attachment cap (3) has internal thread for the annular lower end; Attachment cap (3) inner upper end has spherical, and the spherical of attachment cap (3) is pressed in the ballhead top of bulb seal (2), forms a universal ball joint; It is characterized in that: the bulb seal has the stepped central hole in (2), and the little centre bore in bottom is that polished rod passes through the hole, and the big centre bore in top is lower seal chamber (9); At the top of bulb seal (2) an annular lower cover (4) is arranged; There is external screw thread the upper end of bulb seal (2), and the upper end screw thread of bulb seal (2) is connected with sealing drum (5), and sealing drum (5) compresses lower cover (4); Sealing drum (5) is for cylindrical inner has diaphragm, and middle annular seal space (10) is formed at sealing drum (5) diaphragm bottom, and annular seal space (11) is formed at sealing drum (5) diaphragm top; There is external screw thread the upper end of sealing drum (5), is connected with pressure cap (6) at the upper end screw thread of sealing drum (5); An annular upper press cover (7) is arranged at the top of sealing drum (5); Pressure cap (6) compresses lower cover (4); Upper press cover (7) has centre bore.
2. the self-lubricated rod-pumped well sealer for mouth of ability according to claim 1 is characterized in that: at bulb seal (2) and sphere Connection Block (1) sealing ring (8) is arranged directly.
3. the self-lubricated rod-pumped well sealer for mouth of ability according to claim 1 is characterized in that: horizontal screw is arranged on the wall of sealing drum (5), and laterally the position of screw and middle annular seal space (10) are relative, laterally are fixed with grease nipple on the screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205034256U CN202381018U (en) | 2011-12-06 | 2011-12-06 | Oil pumping unit wellhead sealer capable of self-lubricating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205034256U CN202381018U (en) | 2011-12-06 | 2011-12-06 | Oil pumping unit wellhead sealer capable of self-lubricating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381018U true CN202381018U (en) | 2012-08-15 |
Family
ID=46629531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205034256U Expired - Lifetime CN202381018U (en) | 2011-12-06 | 2011-12-06 | Oil pumping unit wellhead sealer capable of self-lubricating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381018U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763369A (en) * | 2015-03-09 | 2015-07-08 | 中国石油天然气股份有限公司 | Moveable cabin type rod-pumped well packing box |
| CN109025886A (en) * | 2018-08-31 | 2018-12-18 | 黑龙江省易爱蒽新材料科技发展有限公司 | Reciprocating axial seal tuningout energy conservation blowout hookup |
-
2011
- 2011-12-06 CN CN2011205034256U patent/CN202381018U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763369A (en) * | 2015-03-09 | 2015-07-08 | 中国石油天然气股份有限公司 | Moveable cabin type rod-pumped well packing box |
| CN109025886A (en) * | 2018-08-31 | 2018-12-18 | 黑龙江省易爱蒽新材料科技发展有限公司 | Reciprocating axial seal tuningout energy conservation blowout hookup |
| CN109025886B (en) * | 2018-08-31 | 2020-09-08 | 黑龙江省易爱蒽新材料科技发展有限公司 | Reciprocating axial sealing deviation-adjusting energy-saving blowout preventer |
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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: 20120815 |