CN105937380A - Automatic-compensating sealing packing box - Google Patents
Automatic-compensating sealing packing box Download PDFInfo
- Publication number
- CN105937380A CN105937380A CN201610553425.4A CN201610553425A CN105937380A CN 105937380 A CN105937380 A CN 105937380A CN 201610553425 A CN201610553425 A CN 201610553425A CN 105937380 A CN105937380 A CN 105937380A
- Authority
- CN
- China
- Prior art keywords
- packing
- righting
- sealing
- casting die
- polished rod
- 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 127
- 238000007789 sealing Methods 0.000 title claims abstract description 69
- 238000003825 pressing Methods 0.000 claims abstract description 27
- 239000010687 lubricating oil Substances 0.000 claims abstract description 11
- 238000005266 casting Methods 0.000 claims description 51
- 239000000463 material Substances 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 7
- 241000168254 Siro Species 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000009987 spinning Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000009969 flowable effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 12
- 239000003921 oil Substances 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000001050 lubricating effect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000005461 lubrication Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- BYACHAOCSIPLCM-UHFFFAOYSA-N 2-[2-[bis(2-hydroxyethyl)amino]ethyl-(2-hydroxyethyl)amino]ethanol Chemical compound OCCN(CCO)CCN(CCO)CCO BYACHAOCSIPLCM-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (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 provides an automatic-compensating sealing packing box and belongs to the technical field of oil field machines. The packing box comprises a sealing cover, a sealing shell, a compensating spring, a pressing plate, first centralizing packing, a first centralizing pressure piece, compensating packing, a second centralizing pressure piece, second centralizing packing and a sealing base. The compensating packing, the first centralizing packing and the second centralizing packing make close contact with a polished rod under continuous pressure of the centralized pressure pieces, the sealing effect is improved, and packing abrasion can be compensated continuously. Lubricating oil is injected into a cavity, along with up and down motion of the polished rod, the lubricating oil seeps uniformly and stably, corrosion to the compensating spring is prevented, and the influence on the lubricating and sealing effects of the first centralizing packing and the second centralizing packing is avoided. All the parts are mutually matched in radial dimension, the eccentric wear problem is effectively solved, the service life of the packing box and the polished rod is greatly prolonged, and the energy-saving effect can be achieved. The packing box is simple in structure, low in cost and convenient to install and maintain, can be used as a wellhead sealing device individually, can also be taken as a following packing box to be used as an assembly of the wellhead sealing device, and is suitable for wells with various pressures.
Description
Technical field
The present invention relates to a kind of automatic compensation sealing packing box, belong to oilfield machinery technical field.
Background technology
Packing box is in the production process of oil-field oil pumper, fills a kind of sealing theed seal between well head and polished rod
Put.Yet with recovering the oil, scene oil pumping hole condition is complicated, usually makes oil-extractor polish-rod mill partially, and then shortens the use longevity of packing box
Life.When there is the phenomenon such as scuffing, corrosion on polished rod surface, more accelerates the abrasion of packing box, thus cause oil well to run oil, cause leakage
Oil, leakage vapour, pollute environment.
By to packing heavy wear, the field investigation of changing frequent well, being analyzed in conjunction with well yield, have the most former
Because causing its serious wear: (1) part well fluid supply capacity is poor, and well yield is low, when polished rod moves up and down, there is no enough crude oil
Playing lubrication, dry grind between polished rod and packing, packing damages aggravation.(2) caput Equi Asini, polished rod and well head misalign, not always
On line, oil-extractor polish-rod is amesiality, eccentric wear during operation.(3) well head deflection, polished rod and packing eccentric wear.(4) bare rod corrosion, table
There is pit in face.(5), when operation or other operations, with occlusion polished rods such as pipe wrench, form burr and make polished rod air spots.(6) dish is added
The operational approach of root is the most right, and the tension too much, that twist that packing adds is prone to heating.(7) impact of environment, sand and dust enter polished rod and dish
Gap between root, in addition megathermal climate, accelerate abrasion.
In the face of the frequent heavy wear of packing, changing problem frequently, many people propose improvement project.In order to solve polished rod
Eccentric wear problem, someone devises horizontally movable packing box to hold polished rod tightly, and shortcoming is to need manually to translate, it is impossible to make
Packing box is servo-actuated along with the skew of polished rod to be offset, and packing box hold tightly the state of polished rod frictional force is increased,
The energy consumption of oil pumper increases the most accordingly.In order to solve the skew righting problem of polished rod, it is thus proposed that utilization multi-directional ball adjusts
The skew of polished rod, but multi-directional ball is merely able to adjust the inclination of polished rod, it is impossible to adjust the translation problem of polished rod, and polished rod translation is
Problem common in actual application.In order to solve polished rod eccentric wear problem, someone devises polished rod hunting gear, but produces simultaneously
The sealing problem of hunting gear, because rainwater, sewage or sand and dust easily penetrate into while servo-actuated, not only can make polished rod and packing
The abrasion of box strengthens, and polished rod and packing box can be caused corrosion, has a strong impact on its service life.
From above-mentioned context analyzer it can be seen that the eccentric abrasion prevention of packing box, seal strengthen, energy consumption reduces, the prolonging of service life
The problems such as the convenience that pressure, installation long, that strengthen are safeguarded are the most in the urgent need to address, should also be and carry out for its structure
Research and the emphasis direction solved.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of simple in construction, with low cost, installation maintenance
Convenience, eccentric abrasion prevention, good seal, energy-conservation, life-span length, bear the packing box that big the carrying out of pressure compensates automatically.
The technical solution adopted for the present invention to solve the technical problems is:
Described automatic compensation sealing packing box includes sealing lid (1), sealing shell (2), counterbalance spring (3), pressing plate (4), righting
Packing (5), righting casting die (6), compensation packing (7), righting casting die (8), righting packing (9), sealing base (10), and middle part is equal
There are circular hole, polished rod (11) to pass from circular hole, and the passage constituted along circular hole in the middle part of above-mentioned each assembly moves up and down.
Seal lid (1) with seal shell (2) top compact siro spinning technology, apart from adjustable, and clamping counterbalance spring between pressing plate (4)
(3), middle composition cavity (12), counterbalance spring (3) produces lasting pressure to pressing plate (4), after compensating packing (7) abrasion,
Make pressing plate (4) descending, automatically compensate this abrasion, it is ensured that compensate packing (7) and polished rod (11) persistently held tightly sealing function.
Righting packing (5) is clamped, between righting casting die (6) and righting casting die (8) between pressing plate (4) and righting casting die (6)
For compensating packing (7), between righting casting die (8) and sealing base (10), clamp righting packing (9), sealing base (10) and sealing
Shell (2) bottom compact siro spinning technology.Compensation packing (7) and polished rod (11) are played sealing and are made by righting packing (5) and righting packing (9)
With.
This packing box can use separately as wellhead sealing device, it is possible to as follower disk root box, as wellhead sealing device
Assembly uses.
The interior of the middle part circular hole of (1), pressing plate (4), righting casting die (6), righting casting die (8), sealing base (10) is covered in sealing
Footpath is more than the external diameter of polished rod (11)；The internal diameter of the middle part circular hole of righting packing (5) and righting packing (9) is less than outside polished rod (11)
Footpath.Thus ensure that only righting packing (5) contacts with polished rod (11) with righting packing (9), it is possible to prevent polished rod (11) and seal
Lid (1), pressing plate (4), righting casting die (6), righting casting die (8), sealing base (10) contact, mutually produce abrasion, also subtract simultaneously
Lack the up-downgoing frictional force of polished rod (11), also there is energy-saving effect.
Compensate packing (7) and there is flowable or dimensional instability under external force, so could produce at counterbalance spring (3)
It is in close contact with polished rod (11) under raw continuous, improves sealing effectiveness, and after compensating packing (7) abrasion, it is compressed,
Produce continual compensating action, remain the sealing effectiveness to polished rod.For reaching this purpose, compensating packing (7) is
Graininess packing material and the mixture of lubricating oil, or be liquid packing material, or be the solid easily deformed by external force
Packing material.
Additionally, use graininess packing material and the mixture of lubricating oil or the solid packing easily deformed by external force
During material, if righting packing (5) and righting packing (9) serious wear, do not have yet and compensate the situation that packing (7) is revealed, remain to
Keep good sealing.
Righting packing (5) and righting packing (9), for having resilient annular disk root timber material, have elasticity and just can hold polished rod tightly
(11), and under two-way pressure effect, produce certain transverse deformation, automatically compensate the wearing part with polished rod (11) contact surface,
Polished rod (11) is had and preferably holds sealing function tightly.
Do not contact between righting casting die (6) with pressing plate (4), then along with bearing the change of pressure, righting disc between the two
Root (5) produces deformation in various degree, adjusts and polished rod is held tightly degree；And righting casting die (6) side connects with righting packing (5)
Contact portion is divided into annular slope, and when abrasion occurs in righting packing (5) middle part, righting packing (5) can be produced more by righting casting die (6)
Big lateral thrust, compensates the wearing part with polished rod (11) contact surface automatically.
Do not contact between righting casting die (8) with sealing base (10), and righting casting die (8) side connects with righting packing (9)
Contact portion is divided into annular slope, and its principle is same as described above.
Counterbalance spring (3) is fixed in sealing lid (1), or is fixed on pressing plate (4), uses fixing seat (13) or welding
Mode is fixed.In not only can preventing from running, counterbalance spring (3) is shifted over, and installing/dismounting also can be made more convenient.
Inject lubricating oil in cavity (12), then lubricating oil can be along with the up and down motion of polished rod (11), uniform and stable infiltration,
For righting packing (5), compensate packing (7) and righting packing (9) offer lubrication, reduction abrasion, saves energy, raising use longevity
Life.Simultaneously, moreover it is possible to prevent counterbalance spring (3) from corroding, and be effectively isolated and prevent rainwater or sewage from penetrating into, in order to avoid affecting righting packing
(5) lubrication and sealing effectiveness.
The external diameter of righting casting die (6) and righting casting die (8) is less than the internal diameter of sealing shell (2), simultaneously less than pressing plate (4)
External diameter.Then polished rod (11) can drive righting casting die (6) and righting packing (5), relies on pressing plate (4) to carry out any direction in horizontal plane
Move in parallel；Righting casting die (8) and righting packing (9) can be driven simultaneously, any in relying on sealing base (10) to carry out horizontal plane
Direction moves in parallel.So that polished rod (11) can have a certain degree of auto-translating tuningout effect when occurring eccentric, keep away
Exempt to cause the eccentric wear of polished rod (11), and to righting packing (5) and the eccentric wear of righting packing (9), there is raising sealability, fall
Low abrasion, saves energy, the effect in raising service life.
Compared with prior art, present invention have the advantage that
1) this packing box has compensation packing and righting packing, can be in close contact with polished rod under the continuous of righting casting die,
Improve sealing effectiveness, and the abrasion of continual compensation packing；
2) this packing box has cavity, injects lubricating oil in cavity, and lubricating oil can be uniform and stable along with the up and down motion of polished rod
Penetrate into, simultaneously, moreover it is possible to prevent counterbalance spring from corrode, and be effectively isolated prevent rainwater or sewage infiltration, in order to avoid affecting righting packing
Lubrication and sealing effectiveness；
3) tuningout each parts radial dimension cooperates, and effectively solves eccentric wear problem, and can ensure polished rod seal effect,
Substantially increase the service life of packing box and polished rod, and energy-saving effect can be played；
4) righting packing is for having resilient annular disk root timber material, produces certain transverse deformation under two-way pressure effect, from
The dynamic wearing part compensated with polished rod contact surface, has centralizing function to polished rod simultaneously；
5) this packing box simple in construction, with low cost, convenient for installation and maintenance, can use separately as wellhead sealing device, it is also possible to
Making servo-actuated packing box, the assembly as wellhead sealing device uses, applied widely, can be suitable for the well of various pressure.
Accompanying drawing explanation
Fig. 1: overall structure figure.
Fig. 2: overall structure bias figure.
In figure: 1-seals lid, 2-seals shell, 3-counterbalance spring, 4-pressing plate, 5-righting packing, 6-righting casting die, 7-mend
Repay packing, 8-righting casting die, 9-righting packing, 10-sealing base, 11-polished rod, 12-cavity, 13-fix seat.
Detailed description of the invention
The present invention is further detailed explanation below in conjunction with the accompanying drawings:
As it is shown in figure 1, described automatic compensation sealing packing box, including seal lid (1), seal shell (2), counterbalance spring (3),
Pressing plate (4), righting packing (5), righting casting die (6), compensation packing (7), righting casting die (8), righting packing (9), sealing base
, and middle part all has circular hole, polished rod (11) to pass from circular hole (10)；
As shown in Figure 1, seal lid (1) with seal shell (2) top compact siro spinning technology, apart from adjustable, and clamping benefit between pressing plate (4)
Repaying spring (3), middle composition cavity (12), inject lubricating oil in cavity (12), counterbalance spring (3) is fixed in sealing lid (1),
Or it is fixed on pressing plate (4), uses fixing seat (13) or welding manner；
It will be seen from figure 1 that clamp righting packing (5), righting casting die (6) and righting pressure between pressing plate (4) and righting casting die (6)
For compensating packing (7) between part (8), between righting casting die (8) and sealing base (10), clamp righting packing (9), sealing base
(10) with sealing shell (2) bottom compact siro spinning technology.
In Fig. 1, seal the middle part circle of lid (1), pressing plate (4), righting casting die (6), righting casting die (8), sealing base (10)
The internal diameter in hole is more than the external diameter of polished rod (11)；The internal diameter of the middle part circular hole of righting packing (5) and righting packing (9) is less than polished rod
(11) external diameter.
As it is shown in figure 1, do not contact between righting casting die (6) with pressing plate (4), and righting casting die (6) side and righting packing
(5) contact portion is annular slope；Do not contact between righting casting die (8) with sealing base (10), and righting casting die (8) side with
Righting packing (9) contact portion is annular slope.
As in figure 2 it is shown, the external diameter of righting casting die (6) and righting casting die (8) is less than the internal diameter of sealing shell (2), the least
External diameter in pressing plate (4).Then polished rod (11) can drive righting casting die (6) and righting packing (5), relies on pressing plate (4) to carry out level
In face, any direction moves in parallel；Righting casting die (8) and righting packing (9) can be driven simultaneously, rely on sealing base (10) to carry out
In horizontal plane, any direction moves in parallel.So that polished rod (11) can have a certain degree of auto-translating when occurring eccentric
Tuningout effect, it is to avoid cause the eccentric wear of polished rod (11), and to righting packing (5) and the eccentric wear of righting packing (9), there is raising
Sealability, the effect in abrasion, saves energy, raising service life of reducing.
The foregoing is only the preferable embodiment of the present invention, not in order to limit the present invention, all spirit in the present invention
Within principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (8)
1. automatic compensation sealing packing box, it is characterised in that: include sealing lid (1), sealing shell (2), counterbalance spring (3), pressure
Plate (4), righting packing (5), righting casting die (6), compensation packing (7), righting casting die (8), righting packing (9), sealing base
, and middle part all has circular hole, polished rod (11) to pass from circular hole (10)；
Seal lid (1) with seal shell (2) top compact siro spinning technology, apart from adjustable, and clamping counterbalance spring (3) between pressing plate (4),
Middle composition cavity (12)；
Righting packing (5) is clamped, for mending between righting casting die (6) and righting casting die (8) between pressing plate (4) and righting casting die (6)
Repay packing (7), between righting casting die (8) and sealing base (10), clamp righting packing (9), sealing base (10) and sealing shell
(2) bottom compact siro spinning technology.
Automatic compensation sealing packing box the most according to claim 1, it is characterised in that: seal lid (1), pressing plate (4), righting
Casting die (6), righting casting die (8), sealing base (10) the internal diameter of middle part circular hole more than the external diameter of polished rod (11)；Righting packing
And the internal diameter of middle part circular hole of righting packing (9) is less than the external diameter of polished rod (11) (5).
Automatic compensation sealing packing box the most according to claim 1, it is characterised in that: compensate packing (7) at External Force Acting
Under there is flowable or dimensional instability, for the mixture of graininess packing material Yu lubricating oil, or be liquid packing material, or
For the solid packing material easily deformed by external force.
Automatic compensation sealing packing box the most according to claim 1, it is characterised in that: righting packing (5) and righting packing
(9) for having resilient annular disk root timber material.
Automatic compensation sealing packing box the most according to claim 1, it is characterised in that: righting casting die (6) and pressing plate (4) it
Between do not contact, and righting casting die (6) side and righting packing (5) contact portion are annular slope；Righting casting die (8) and sealing base
Do not contact between seat (10), and righting casting die (8) side is annular slope with righting packing (9) contact portion.
Automatic compensation sealing packing box the most according to claim 1, it is characterised in that: counterbalance spring (3) is fixed on sealing
On lid (1), or it is fixed on pressing plate (4), uses fixing seat (13) or welding manner to fix.
Automatic compensation sealing packing box the most according to claim 1, it is characterised in that: cavity (12) injects lubricating oil.
Automatic compensation sealing packing box the most according to claim 1, it is characterised in that: righting casting die (6) and righting casting die
(8) external diameter is less than the internal diameter of sealing shell (2), simultaneously less than the external diameter of pressing plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610553425.4A CN105937380B (en) | 2016-07-14 | 2016-07-14 | Automatic compensation sealing packing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610553425.4A CN105937380B (en) | 2016-07-14 | 2016-07-14 | Automatic compensation sealing packing box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105937380A true CN105937380A (en) | 2016-09-14 |
| CN105937380B CN105937380B (en) | 2018-11-09 |
Family
ID=56872837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610553425.4A Expired - Fee Related CN105937380B (en) | 2016-07-14 | 2016-07-14 | Automatic compensation sealing packing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105937380B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630205A (en) * | 2019-11-11 | 2019-12-31 | 张程 | Eccentric wear prevention packing for oil extraction |
| CN111119780A (en) * | 2019-12-25 | 2020-05-08 | 刘光明 | Packing box for oil exploitation |
| CN111810484A (en) * | 2020-07-02 | 2020-10-23 | 江苏海川卓越密封材料有限公司 | Leak-proof sealing piece for hydraulic cylinder |
| US20220098953A1 (en) * | 2020-09-29 | 2022-03-31 | Branden Wiggins | The Spring-Loaded Self-Adjusting Stuffing Box |
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|---|---|---|---|---|
| US4907650A (en) * | 1987-07-24 | 1990-03-13 | Double E, Inc. | Wellhead with safety valve for pumping well |
| CN2610074Y (en) * | 2003-03-24 | 2004-04-07 | 大庆联创石油工具制造有限公司 | Clean centralizing seal packing |
| CN2833263Y (en) * | 2005-10-28 | 2006-11-01 | 潘哲 | Self-compensating packing seal structure |
| CN202220576U (en) * | 2011-07-08 | 2012-05-16 | 中国石油天然气股份有限公司 | Automatic compensation particle mixed packing lubrication type packing box |
| CN202673224U (en) * | 2012-05-23 | 2013-01-16 | 张永新 | Self-uprighting wellhead sealing energy-saving adjustment device |
| CN204024565U (en) * | 2014-06-26 | 2014-12-17 | 贾广生 | A kind of wear resistant packing box |
| CN204457566U (en) * | 2015-02-04 | 2015-07-08 | 胡兆麟 | Axle sleeve righting type oil-pumping well head equipment |
| CN205743809U (en) * | 2016-07-14 | 2016-11-30 | 哈尔滨理工大学 | Automatic compensation sealing packing box |
-
2016
- 2016-07-14 CN CN201610553425.4A patent/CN105937380B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4907650A (en) * | 1987-07-24 | 1990-03-13 | Double E, Inc. | Wellhead with safety valve for pumping well |
| CN2610074Y (en) * | 2003-03-24 | 2004-04-07 | 大庆联创石油工具制造有限公司 | Clean centralizing seal packing |
| CN2833263Y (en) * | 2005-10-28 | 2006-11-01 | 潘哲 | Self-compensating packing seal structure |
| CN202220576U (en) * | 2011-07-08 | 2012-05-16 | 中国石油天然气股份有限公司 | Automatic compensation particle mixed packing lubrication type packing box |
| CN202673224U (en) * | 2012-05-23 | 2013-01-16 | 张永新 | Self-uprighting wellhead sealing energy-saving adjustment device |
| CN204024565U (en) * | 2014-06-26 | 2014-12-17 | 贾广生 | A kind of wear resistant packing box |
| CN204457566U (en) * | 2015-02-04 | 2015-07-08 | 胡兆麟 | Axle sleeve righting type oil-pumping well head equipment |
| CN205743809U (en) * | 2016-07-14 | 2016-11-30 | 哈尔滨理工大学 | Automatic compensation sealing packing box |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630205A (en) * | 2019-11-11 | 2019-12-31 | 张程 | Eccentric wear prevention packing for oil extraction |
| CN111119780A (en) * | 2019-12-25 | 2020-05-08 | 刘光明 | Packing box for oil exploitation |
| CN111119780B (en) * | 2019-12-25 | 2021-10-29 | 大安鸿源管业有限公司 | Packing box for oil exploitation |
| CN111810484A (en) * | 2020-07-02 | 2020-10-23 | 江苏海川卓越密封材料有限公司 | Leak-proof sealing piece for hydraulic cylinder |
| US20220098953A1 (en) * | 2020-09-29 | 2022-03-31 | Branden Wiggins | The Spring-Loaded Self-Adjusting Stuffing Box |
| US11988063B2 (en) * | 2020-09-29 | 2024-05-21 | Branden Wiggins | Spring-loaded self-adjusting stuffing box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105937380B (en) | 2018-11-09 |
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