CN111119780A - Packing box for oil exploitation - Google Patents
Packing box for oil exploitation Download PDFInfo
- Publication number
- CN111119780A CN111119780A CN201911355063.8A CN201911355063A CN111119780A CN 111119780 A CN111119780 A CN 111119780A CN 201911355063 A CN201911355063 A CN 201911355063A CN 111119780 A CN111119780 A CN 111119780A
- Authority
- CN
- China
- Prior art keywords
- lubricating
- packing
- movable rod
- gland
- oil
- 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.)
- Granted
Links
- 238000012856 packing Methods 0.000 title claims abstract description 59
- 239000003921 oil Substances 0.000 claims abstract description 33
- 210000004907 gland Anatomy 0.000 claims abstract description 30
- 239000010687 lubricating oil Substances 0.000 claims abstract description 23
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000011161 development Methods 0.000 claims abstract description 4
- 230000001050 lubricating effect Effects 0.000 claims description 51
- 239000011248 coating agent Substances 0.000 claims description 41
- 238000000576 coating method Methods 0.000 claims description 41
- 239000007788 liquid Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims 6
- 238000005461 lubrication Methods 0.000 abstract description 11
- 230000000737 periodic effect Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000009471 action Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sealing Devices (AREA)
Abstract
The invention relates to the technical field of shaft sleeve sealing, and discloses a packing box for oil exploitation, which comprises an upper gland, a lower gland, a press plug and a packing spring, wherein the upper gland and the lower gland are movably sleeved, the press plug is arranged in the joint of the upper gland and the lower gland, and the inner side wall of the upper gland is provided with lubrication. This a packing box for oil development, the consumption of control lubricating oil and the loss of packing keep matching, along with the consumption of lubricating oil, carry out compression compensation to packing spring, make packing spring's length keep in appropriate within range, on the one hand, make the contact pressure of packing and polished rod keep steadily and suitable, reduce the wearing and tearing speed of packing and reduce polished rod removal resistance, reduce energy consumption, on the other hand, reduce artifical periodic adjustment packing pressure's number of times, reduce the human cost, lubricating oil keeps the constantly lubricated of polished rod, improve the life of polished rod, reduce to overhaul and with the frequency of trading, use cost is reduced.
Description
Technical Field
The invention relates to the technical field of shaft sleeve sealing, in particular to a packing box for oil exploitation.
Background
The packing box is a packing box structure capable of automatically compensating, wherein the spring elasticity compresses the conical body to enable the packing to be tightly attached to the polished rod, sealing is achieved, along with the loss of the packing, the restoring force of the spring automatically compresses the packing to enable the packing to compensate the worn part, the packing pressing force is guaranteed, and the sealing effect is guaranteed.
The packing pressing force is generated by the combined action of the elastic force of the spring and the conical surface, the compression of the spring is continuously released along with the reduction of the abrasion of the packing, on one hand, the pressure between the packing and the polished rod cannot be kept in an optimal interval due to the fact that the elastic force of the spring is changed, on the other hand, the pressure between the packing and the polished rod is too large due to the fact that the elastic force of the spring at the initial stage is large, the abrasion speed is increased, the rod breakage probability is increased, on the other hand, the length of an effective adjustment interval is limited due to the fact that the elastic force of the spring at the tail end of the effective adjustment interval cannot be too small.
Secondly, polished rod eccentric wear, dry grinding and polished rod are the main reasons that cause the oil leakage, though can effectively improve above-mentioned reason through automatic compensation and lead to the oil leakage, the wearing and tearing speed of packing still is very fast, therefore the maintenance that leads to, the frequency of changing is higher, has increased use cost.
Disclosure of Invention
Aiming at the defects of the background technology, the invention provides the technical scheme of the packing box for oil exploitation, which has the advantages of small sealing pressure change and wear resistance and solves the problems in the background technology.
The invention provides the following technical scheme: the packing box for oil exploitation comprises an upper gland, a lower gland, a press plug and a packing spring, wherein the upper gland and the lower gland are movably sleeved, the press plug is arranged in the joint of the upper gland and the lower gland, a lubricating chamber is arranged on the inner side wall of the upper gland, an inner chamber of the lubricating chamber is divided into a driving chamber and a limiting chamber by a piston, one side of the lubricating chamber is communicated with the lubricating chamber, the limiting chamber and the lubricating chamber are filled with lubricating liquid, the downward movement distance of the piston is automatically adjusted through the change of the amount of the lubricating liquid, a compensating spring in a compression state is arranged in the driving chamber, a movable rod is arranged at the lower end of the piston, an oil outlet piece and a coating piece are arranged in the lubricating chamber, the coating piece is adhered to the surface of the oil outlet piece, the oil outlet piece controls the outflow of the lubricating oil, the coating piece adsorbs the lubricating oil to enable the lubricating oil to be uniformly distributed, the structure that the movable rod is limited to move downwards in a single direction is installed between the movable rod and the lubricating chamber, the lower end of the movable rod is connected with a coating roller, and a packing spring is movably connected between the coating roller and the press plug.
Preferably, the lubricating chamber is an annular cavity, the lubricating chamber and the piston are sealed, and a sleeve bag is arranged between the lubricating chamber and the movable rod.
Preferably, a limiting device for controlling the movable rod to move downwards in one direction is arranged between the movable rod and the lubricating chamber.
Preferably, the one-way limiting device between the movable rod and the lubricating chamber comprises a limiting groove arranged on the outer side wall of the movable rod and a lock tongue arranged at the corresponding position of the lubricating chamber.
Preferably, one side of the limiting groove is provided with an unlocking groove, the bottom of the movable rod is penetrated through the coating roller, and the movable rod can rotate through an inner angle nut at the bottom.
Preferably, the oil outlet member and the coating member are internally provided with a coating roller and a lubricating roller respectively, the lubricating roller contacts with the polish rod and rotates along with the movement of the polish rod, the lubricating roller and the coating roller are closely attached to each other, and one side of the coating roller is communicated with a lubricating cavity of the lubricating chamber.
Preferably, the inner side wall of the coating piece is provided with a wear-resistant layer, and the surface of the wear-resistant layer is provided with uniform reticular holes.
The invention has the following beneficial effects:
1. this a packing box for oil development, the consumption of control lubricating oil keeps matching with the loss of packing, along with the consumption of lubricating oil, carries out compression compensation to packing spring, makes packing spring's length keep in appropriate within range, and on the one hand, the contact pressure who makes packing and polished rod keeps steadily and suitable, reduces the wearing and tearing speed of packing and reduces polished rod removal resistance, reduces the energy resource consumption, and on the other hand reduces artifical periodic adjustment packing pressure's number of times, reduces the human cost.
2. This a packing box for oil development, lubricating oil keeps lubricated constantly of polished rod, improves the life of polished rod, reduces to overhaul and with trading the frequency, reduces use cost.
Drawings
FIG. 1 is a partial cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view of bb in FIG. 1 according to the present invention;
FIG. 3 is a schematic view of a movable bar according to the present invention;
FIG. 4 is a bottom schematic view of the platen of the present invention;
FIG. 5 is a schematic view of the overall structure of the present invention;
fig. 6 is a schematic structural diagram of a conventional packing box.
In the figure: 1. a gland is arranged; 2. a lower gland; 3. pressing and plugging; 4. a lubrication chamber; 5. a compensation spring; 6. a piston; 7. a movable rod; 8. an oil outlet part; 9. a coating member; 10. a coating roller; 11. a lubricating roller; 12. a wear layer; 13. a limiting groove; 14. a latch bolt; 15. a packing spring; 16. pressing a plate; 17. a one-way oil filling valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a packing box for oil exploitation comprises an upper gland 1, a lower gland 2, a press plug 3 and a packing spring 15, wherein the upper gland 1 and the lower gland 2 are movably sleeved, the press plug 3 is arranged in the joint of the upper gland 1 and the lower gland 2, the press plug 3 comprises a press plug and a chute with a downward opening, a packing is arranged in the chute, the press plug presses a disc to the narrow part of the chute to be attached to a polished rod, a lubricating chamber 4 is arranged in the upper gland 1, one side of the lubricating chamber 4 is communicated with a lubricating chamber, the inner wall of the lubricating chamber 4 is movably connected with a piston 6, the lubricating chamber 4 is divided into a driving chamber and a limiting chamber by the piston 6, the limiting chamber is communicated with the lubricating chamber, a compressed compensating spring 5 is arranged in the driving chamber, the elastic force of the compensating spring 5 acts on the piston 6, the limiting chamber and the lubricating chamber are filled with lubricating oil, the piston 6 is limited from moving downwards, an oil outlet 8 is, the surface of the oil outlet part 8 is adhered with the coating part 9, the oil outlet part 8 controls the outflow of lubricating oil according to the movement of the polished rod, the lubricating oil is adsorbed by the coating part 9 and coated on the surface of the polished rod, along with the consumption of the lubricating oil, the lubricating oil in the limiting cavity is reduced, the downward movement space of the piston 6 is enlarged, the piston 6 pushes the movable rod 7 to move the movable rod 7 under the action of the lubricating chamber 4, the movable rod 7 compresses the packing spring 15 through the coating roller 10, the elastic force of the packing spring 15 is compensated, and the pressure between the packing and the polished rod is always kept in a proper range.
Wherein, lubrication chamber 4 is the annular cavity, through sealed processing between lubrication chamber 4 and the piston 6, piston 6 slides in lubrication chamber 4, is equipped with the cover bag between lubrication chamber 4 and the movable rod 7, separates lubrication chamber 4 and movable rod 7, avoids this position of movable rod 7 to arouse to reveal.
Wherein, be equipped with the stop device that control movable rod 7 one-way downward movement between movable rod 7 and the lubrication chamber 4, ensure the stability of movable rod 7 to coating roller 10, and then guarantee that packing spring 15 is stable to the elasticity of pressure plug 3.
The one-way limiting device between the movable rod 7 and the lubricating chamber 4 comprises a limiting groove 13 arranged on the outer side wall of the movable rod 7 and a lock tongue 14 arranged on the lubricating chamber 4, and the structure is a common lock tongue structure and is not described.
Wherein, one side of spacing groove 13 is equipped with the unlocking groove, and the bottom of movable rod 7 is run through coating roller 10, and movable rod 7 accessible bottom interior angle nut is rotatory, rotates movable rod 7 to the unlocking groove, restores it to the normal position.
Wherein, install coating roller 10 and lubricated roller 11 in oil outlet 8 and the coating 9 respectively, lubricated roller 11 contacts the polished rod and moves with the polished rod and rotates, lubricated roller 11 and coating roller 10 hug closely each other, and one side of coating roller 10 communicates the lubrication chamber of lubrication chamber 4, and coating roller 10 adheres to the surface of lubrication after lubricating and coats it to lubricated roller 11, and the lubricating oil of lubricated roller 11 surface is absorbed and evenly coated on the polished rod by coating 9.
Wherein, the inner side wall of the coating member 9 is provided with a wear-resistant layer 12, the surface of the wear-resistant layer 12 is provided with even mesh holes, the wear-resistant layer 12 reduces the wear of the coating member 9 caused by the polish rod on one hand, and evenly coats the lubricating oil adsorbed by the coating member 9 on the polish rod through the mesh holes on the other hand.
The working principle and the using process of the invention are as follows:
mounting of
The movable rod 7 is rotated through the inner angle wrench, the movable rod 7 can freely move up and down, lubricating oil is injected in a one-way mode through the one-way oil injection valve 17, along with the increase of the lubricating oil, the piston 6 moves upwards, the compensation spring 5 is compressed until the length is the shortest, the limiting groove 13 is aligned with the lock tongue 14 through the rotation of the movable rod 7, and then the installation steps are the same as those of an existing packing box.
Use of
Along with the removal of polished rod, the loss of packing reduces, drive lubricated roller 11 simultaneously rotatory, and then drive coating roller 10 rotatory, with lubricating oil coating on lubricated roller 11's surface when coating roller 10 is rotatory, lubricating oil reduces in step, piston 6 moves under compensation spring 5's effect, and then drive movable rod 7 and clamp plate 16 and move down compression packing spring 15, the pressure loss of compensation packing spring 15, when movable rod 7 moved, spacing groove 13 and spring bolt 14 interact, guarantee movable rod 7 one-way movement, ensure that the compression length of packing spring 15 keeps in appropriate violating.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a packing box for oil development, includes gland (1), gland (2), tamponade (3) and packing spring (15) down, it cup joints with gland (2) activity down to go up gland (1), go up inside tamponade (3), its characterized in that of being equipped with of junction of gland (1) and gland (2) down: the inner side wall of the upper gland (1) is provided with a lubricating chamber (4), the inner cavity of the lubricating chamber (4) is divided into a driving cavity and a limiting cavity by a piston (6), one side of the lubricating chamber (4) is communicated with the lubricating cavity, the limiting cavity and the lubricating cavity are filled with lubricating liquid, the downward moving distance of the piston (6) is automatically adjusted through the change of the amount of the lubricating liquid, a compensating spring (5) in a compression state is installed in the driving cavity, the lower end of the piston (6) is provided with a movable rod (7), an oil outlet part (8) and a coating part (9) are installed in the lubricating cavity, the coating part (9) is adhered to the surface of the oil outlet part (8), the oil outlet part (8) controls the outflow of the lubricating oil, the coating part (9) adsorbs the lubricating oil to enable the distribution of the lubricating oil to be uniform and coats the surface of a polished rod, and a structure for limiting the unidirectional downward movement of the movable rod (7) is installed between the, the lower end of the movable rod (7) is connected with a coating roller (10), and a packing spring (15) is movably connected between the coating roller (10) and the press plug (3).
2. The packing kit for oil extraction as defined in claim 1, wherein: the lubricating chamber (4) is an annular cavity, the lubricating chamber (4) and the piston (6) are subjected to sealing treatment, and a sleeve bag is arranged between the lubricating chamber (4) and the movable rod (7).
3. The packing kit for oil extraction as defined in claim 1, wherein: and a limiting device for controlling the movable rod (7) to move downwards in one direction is arranged between the movable rod (7) and the lubricating chamber (4).
4. A packing kit for oil extraction as defined in claim 3, wherein: the one-way limiting device between the movable rod (7) and the lubricating chamber (4) comprises a limiting groove (13) arranged on the outer side wall of the movable rod (7) and a bolt (14) arranged at the corresponding position of the lubricating chamber (4).
5. The packing kit for oil extraction as defined in claim 4, wherein: an unlocking groove is formed in one side of the limiting groove (13), the bottom of the movable rod (7) is penetrated through the coating roller (10), and the movable rod (7) can rotate through an inner angle nut at the bottom.
6. The packing kit for oil extraction as defined in claim 1, wherein: the oil outlet part (8) and the coating part (9) are internally provided with a coating roller (10) and a lubricating roller (11) respectively, the lubricating roller (11) contacts with the polish rod and rotates along with the movement of the polish rod, the lubricating roller (11) and the coating roller (10) are mutually attached, and one side of the coating roller (10) is communicated with a lubricating cavity of the lubricating chamber (4).
7. The packing kit for oil extraction as defined in claim 1, wherein: the inner side wall of the coating piece (9) is provided with a wear-resistant layer (12), and the surface of the wear-resistant layer (12) is provided with uniform reticular holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911355063.8A CN111119780B (en) | 2019-12-25 | 2019-12-25 | Packing box for oil exploitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911355063.8A CN111119780B (en) | 2019-12-25 | 2019-12-25 | Packing box for oil exploitation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111119780A true CN111119780A (en) | 2020-05-08 |
| CN111119780B CN111119780B (en) | 2021-10-29 |
Family
ID=70503296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911355063.8A Active CN111119780B (en) | 2019-12-25 | 2019-12-25 | Packing box for oil exploitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111119780B (en) |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1364265A (en) * | 1971-03-18 | 1974-08-21 | Osoboe K Bjuro Konstruiro Vani | Submersible pumps |
| US4981174A (en) * | 1990-02-14 | 1991-01-01 | White Orvel O | Leakproof stuffing box with external lubrication for polish rod |
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2019
- 2019-12-25 CN CN201911355063.8A patent/CN111119780B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111119780B (en) | 2021-10-29 |
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