CN106194056A - A kind of eccentric abrasion prevention seat - Google Patents
A kind of eccentric abrasion prevention seat Download PDFInfo
- Publication number
- CN106194056A CN106194056A CN201610763982.9A CN201610763982A CN106194056A CN 106194056 A CN106194056 A CN 106194056A CN 201610763982 A CN201610763982 A CN 201610763982A CN 106194056 A CN106194056 A CN 106194056A
- Authority
- CN
- China
- Prior art keywords
- hole
- lower base
- upper pedestal
- connector
- 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.)
- Pending
Links
- 238000005299 abrasion Methods 0.000 title claims abstract description 37
- 230000002265 prevention Effects 0.000 title claims abstract description 37
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 70
- 239000011159 matrix material Substances 0.000 claims description 57
- 238000007789 sealing Methods 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000003825 pressing Methods 0.000 description 4
- 230000004323 axial length Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1071—Wear protectors; Centralising devices, e.g. stabilisers specially adapted for pump rods, e.g. sucker rods
-
- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a kind of eccentric abrasion prevention seat, belong to oil recovery technique field, including upper pedestal, lower base and connector.Upper pedestal offers the first through hole passed for polished rod, and lower base offers the second through hole passed for polished rod.Upper pedestal is connected by connector with lower base, and connector has locking state and non-locking state.When connector is in locking state, upper pedestal contacts with lower base and fixes；When connector is in non-locking state, upper pedestal can move along the radial direction of the first through hole relative to lower base.During installation, upper pedestal is connected with polished rod sealer, and lower base is connected with well head, when polished rod sealer misaligns with well head, connector can be made to be in non-locking state, upper pedestal can be adjusted with the relative position of lower base, finally make polished rod sealer and well head centering, it is to avoid eccentric wear phenomenon occurs.
Description
Technical field
The present invention relates to oil recovery technique field, in particular to a kind of eccentric abrasion prevention seat.
Background technology
In oil recovery process, there is the problem of eccentric wear in the polished rod sealer of major part oil pumping machine well head, well head eccentric wear needs
Stopping well and oil pumper is adjusted centering, the needing of serious wear is stopped well crane and is more renewed polished rod, causes polished rod short for service life,
The various problems such as replacing number of times is frequent, not only affect oil well output but also add the amount of labour and cost.Additionally, polished rod sealer and well
Mouth misaligns, and can cause well head oil gas leakage, both cause hidden danger, and can cause again environmental pollution accident, and it is unnecessary to cause
Oil and gas loss and pollute damages.
Summary of the invention
It is an object of the invention to provide a kind of eccentric abrasion prevention seat, to solve the problem that polished rod sealer and well head misalign.
The present invention is achieved in that
The present invention provides a kind of eccentric abrasion prevention seat, and for polished rod sealer is fixed on well head, polished rod sealer is used for sealing
Polished rod；
Including upper pedestal, lower base and connector, upper pedestal is for being connected with polished rod sealer, and lower base is used for and well head
Connecting, upper pedestal offers the first through hole passed for polished rod, and lower base offers the second through hole passed for polished rod；
Upper pedestal is connected by connector with lower base, and connector has locking state and non-locking state, works as connector
When being in locking state, upper pedestal contacts with lower base and fixes, and when connector is in non-locking state, upper pedestal can phase
Lower base is moved along the radial direction of the first through hole.
Further, connector includes interconnective compressed part and connecting portion, and compressed part is pressed on upper pedestal or lower base
On, connecting portion removably connects with lower base or upper pedestal.
Further, compressed part offers the first spacing hole, and connecting portion offers the second spacing hole, the first spacing hole and
Two spacing hole connections, the aperture of the second spacing hole is more than the aperture of the first spacing hole；
Upper pedestal includes interconnective first matrix and the first ennation, and the first matrix is positioned at the second spacing hole, the
One ennation extends through the first spacing hole and to the direction away from lower base, and the external diameter of the first matrix is less than the second spacing hole
Diameter, the external diameter of the first ennation is less than the diameter of the first spacing hole.
Further, the first spacing hole and the second spacing hole are coaxially disposed, and the first matrix and the first ennation are coaxially disposed.
Further, lower base includes interconnective second matrix and the second ennation, and the second matrix is with connecting portion even
Connecing, the second ennation extends to the direction away from upper pedestal relative to the second matrix, and the external diameter of the second ennation is less than the second matrix
External diameter, the second ennation is for being connected with well head.
Further, the second through hole includes the first hole section and the second hole section being coaxially disposed, and the first hole section is opened in second
Matrix, the second hole section is opened in the second ennation, and the diameter of the first hole section is less than the diameter of the second hole section, the diameter of the first hole section
Diameter less than or equal to the first through hole.
Further, connecting portion is provided with female thread, and the second matrix is provided with the external screw thread matched with female thread.
Further, connector is provided with locking device, and locking device includes that at least 3 locking members, 3 locking member circumference divide
Being distributed in connecting portion, locking member is spirally connected with connecting portion, conflicts with the first matrix in one end of locking member.
Further, the surface that upper pedestal contacts with lower base is provided with annular groove, is provided with sealing ring in annular groove.
Further, being provided with supporting positive cover inside the first through hole, the internal diameter of supporting positive cover matches with the diameter of polished rod.
The invention has the beneficial effects as follows:
A kind of eccentric abrasion prevention seat that the present invention is obtained by above-mentioned design, upper pedestal is connected by connector with lower base, even
When junctor is in non-locking state, the relative position of upper pedestal and lower base can be changed.During installation, upper pedestal and polished rod sealer
Connecting, lower base is connected with well head.When polished rod sealer misaligns with well head, connector can be made to be in non-locking state, make
Upper pedestal and lower base generation relative displacement, thus realize the regulation to upper pedestal with the relative position of lower base, finally make light
Rod sealer and well head centering, it is to avoid eccentric wear phenomenon occurs.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below by embodiment required use attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, and it is right to be therefore not construed as
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to this
A little accompanying drawings obtain other relevant accompanying drawings.
The structural representation of the eccentric abrasion prevention seat that Fig. 1 provides for the embodiment of the present invention 1；
Fig. 2 is the structural representation of the upper pedestal shown in Fig. 1；
Fig. 3 is the structural representation of the lower base shown in Fig. 2；
Fig. 4 is the structural representation of the connector shown in Fig. 3；
The scheme of installation of the eccentric abrasion prevention seat that Fig. 5 provides for the embodiment of the present invention 1；
The structural representation of the eccentric abrasion prevention seat that Fig. 6 provides for other embodiments of the invention；
The structural representation of the eccentric abrasion prevention seat that Fig. 7 provides for the embodiment of the present invention 2；
The scheme of installation of the eccentric abrasion prevention seat that Fig. 8 provides for the embodiment of the present invention 2.
In figure, reference is:
Eccentric abrasion prevention seat 10；Upper pedestal 100；First matrix 101；First ennation 102；First through hole 103；Annular groove
104；Lower base 110；Second matrix 111；Second ennation 112；Second through hole 113；First hole section 1131；Second hole section
1132；Connector 120；Compressed part 121；First spacing hole 1211；Connecting portion 122；Second spacing hole 1221；Sealing ring 130；Hands
Handle 140；Locking member 150；Supporting positive cover 160；Polished rod sealer 20；Wellhead tee joint pipe 30；Polished rod 40.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention rather than whole embodiments.Generally implement with the present invention illustrated described in accompanying drawing herein
The assembly of example can be arranged with various different configurations and design.
Therefore, detailed description to the embodiments of the invention provided in the accompanying drawings is not intended to limit claimed below
The scope of the present invention, but be merely representative of the selected embodiment of the present invention.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under not making creative work premise, broadly falls into the model of present invention protection
Enclose.
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Combination mutually.
It should also be noted that similar label and letter represent similar terms, therefore, the most a certain Xiang Yi in following accompanying drawing
Individual accompanying drawing is defined, then need not it be defined further and explains in accompanying drawing subsequently.
In describing the invention, it should be noted that term " on ", D score, " interior ", the orientation of the instruction such as " outward " or position
Relation of putting is for based on orientation shown in the drawings or position relationship, or the orientation usually put when this invention product uses or position
Put relation, or the orientation that usually understands of those skilled in the art or position relationship, or used when this invention product uses
The orientation often put or position relationship, be for only for ease of the description present invention and simplify description rather than instruction or hint indication
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the present invention
Restriction.Describe additionally, term " first ", " second " are only used for distinguishing, and it is not intended that instruction or hint relative importance.
In describing the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " arrange ",
" install ", " connection " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or connect integratedly
Connect；Can be to be directly connected to, it is also possible to be indirectly connected with by intermediary.For the ordinary skill in the art, may be used
Above-mentioned term concrete meaning in the present invention is understood with concrete condition.
Embodiment 1
A kind of eccentric abrasion prevention seat 10 that the present embodiment provides, for polished rod sealer 20 is fixed on well mouth of oil well, polished rod is close
Envelope device 20 is used for sealing polished rod 40, prevents oil leakage phenomenon occur in polished rod 40 oil pumping process.
As it is shown in figure 1, eccentric abrasion prevention seat 10 includes upper pedestal 100, lower base 110 and connector 120, upper pedestal 100 passes through
Connector 120 is connected with lower base 110.
In the present embodiment, as in figure 2 it is shown, upper pedestal 100 is T-shaped structure, upper pedestal 100 is provided with the first through hole 103.The seat of honour
Body 100 includes interconnective first matrix 101 and the first ennation 102, and the first matrix 101 and the first ennation 102 are
Column structure, the first through hole 103 runs through the first matrix 101 and the first ennation 102, and the external diameter of the first ennation 102 is less than
The external diameter of the first matrix 101.The Internal periphery of the radial section of the first matrix 101 is concentric with outline, the axle of the first ennation 102
The axial length of the first matrix 101 it is more than to length.First ennation 102 is provided with external screw thread, and the first matrix 101 prolongs away from first
The end face stretching body 102 offers two annular grooves 104, the axis of annular groove 104 and the dead in line of the first matrix 101.
Wherein, the first matrix 101 can be coaxially disposed with the first ennation 102, it is also possible to eccentric setting, in the present embodiment, for convenience
The processing and manufacturing of upper pedestal 100, it is preferable that the first matrix 101 is coaxially disposed with the first ennation 102.
In the present embodiment, as it is shown on figure 3, lower base 110 is T-shaped structure, lower base 110 is provided with the second through hole 113.Lower seat
Body 110 includes interconnective second matrix 111 and the second ennation 112, and the second matrix 111 and the second ennation 112 are
Column structure, the axial length of the second ennation 112 is more than the axial length of the second matrix 111, the external diameter of the second ennation 112
External diameter less than the second matrix 111.Certainly, the second ennation 112 can be coaxially disposed with the second matrix 111, it is possible to eccentric setting,
In the present embodiment, for convenience of the processing and manufacturing of lower base 110, it is preferable that the second ennation 112 coaxially sets with the second matrix 111
Put.
Wherein, the second through hole 113 can be straight hole, it is also possible to be shoulder hole, in the present embodiment, it is preferable that the second through hole
113 is shoulder hole, and it includes the first hole section 1131 and the second hole section 1132, and the first hole section 1131 is located in the second matrix 111, the
Two hole sections 1132 set with in the second ennation 112, and the Internal periphery of the radial section of the second ennation 112 and outline are concentric, the
The diameter of one hole section 1131 is less than the diameter of the second hole section 1132, and the diameter of the second hole section 1132 is straight equal to the first through hole 103
Footpath.Second ennation 112 is provided with female thread, and the second matrix 111 is provided with external screw thread.Certainly, the first hole section 1131 and the second hole section
1132 can be coaxially disposed, it is also possible to eccentric setting, in the present embodiment, for convenience of the processing of the second through hole 113, it is preferable that the
One hole section 1131 is coaxially disposed with the second hole section 1132.It should be noted that in other specific embodiments, the second hole section 1132
Diameter be also smaller than the diameter of the first through hole 103.
The effect of connector 120 is to connect upper pedestal 100 and lower base 110.The structure of connector 120 can be multiple,
In the present embodiment, as shown in Figure 4, connector 120 is column structure, and it includes interconnective compressed part 121 and connecting portion
122.Compressed part 121 offers the first spacing hole 1211, and connecting portion 122 offers the second spacing hole 1221, the first spacing hole
1211 connect with the second spacing hole 1221 and are internally formed shoulder hole at connector 120, and the diameter of the first spacing hole 1211 is less than
The diameter of the second spacing hole 1221, connecting portion 122 is provided with the female thread that the external screw thread being provided with the second matrix 111 matches.When
So, the first spacing hole 1211 and the second spacing hole 1221 can be coaxially disposed, it is also possible to eccentric setting, in the present embodiment, for side
Just the processing in connector 120 inner step hole, it is preferable that first spacing is coaxially disposed with the second spacing hole 1221.
During installation, as it is shown in figure 1, arrange the sealing ring 130 of correspondingly-sized in the annular groove 104 of upper pedestal 100, on
Pedestal 100 is located on second matrix 111 end face away from the second extension, makes sealing ring 130 and the second matrix 111 away from extension
The end face in portion is conflicted.The connecting portion 122 making connector 120 again is spirally connected with the second matrix 111 so that the first matrix 101 is positioned at
In two spacing holes 1221, the first ennation 102 extends through the first spacing hole 1211 and to the direction away from lower base 110.On
After pedestal 100 and lower base 110 are connected by connector 120, connector 120 has locking state and non-locking state.Connect
The locking state of body 120, i.e. passes through rotation coupling 120 and makes connector 120 move to the direction near lower base 110, making
The compressed part 121 of connector 120 and the first matrix 101 are pressed near the end contact of the first ennation 102 and by the first matrix 101
Tightly, in this case, upper pedestal 100 is fixed with the relative position of lower base 110, and upper pedestal 100 then cannot lower base 110 relatively
Mobile.The non-locking state of connector 120, i.e. passes through rotation coupling 120 and makes connector 120 to away from lower base 110
Direction is moved, and makes the compressed part 121 of connector 120 and the first matrix 101 near the end face of the first ennation 102 at a distance of a spacing
From, in this case, owing to the diameter of the first spacing hole 1211 is more than the external diameter of the first ennation 102, the second spacing hole 1221
Diameter more than the external diameter of the first matrix 101, upper pedestal 100 can be made to move at the radial direction of the first through hole 103, thus realize
Regulation to upper pedestal 100 with the relative position of lower base 110.Owing to the first spacing hole 1211 is coaxial with the second spacing hole 1221
Arranging, the first extension and the first matrix 101 are coaxially disposed, and upper pedestal 100 can be made to have on the radial direction of the first through hole 103
There is sufficiently large range of accommodation, and can regulate at any radial direction of the first through hole 103.When upper pedestal 100 and lower base 110
Relative position adjustment good after, connector 120 can be made to be in locking state by rotation coupling 120 again.Adjusted whole
Cheng Zhong, owing to connector 120 is threadeded with lower base 110 so that connector 120 and both lower bases 110 company of being in all the time
Connect state, it is ensured that eccentric abrasion prevention seat 10 has preferable globality.Certainly, the connecting portion 122 of connector 120 and lower base 110
Second matrix 111 is in addition to being threaded connection, and the connected mode also by other connects, and such as, connecting portion 122 directly overlaps
Outside in the second matrix 111, by holding screw, both are locked.
Connector 120 is all connected with body 120 from locking state to the process of non-locking state, non-locking state to locking state
Realization is rotated relative to lower base 110.In the present embodiment, more laborsaving, at connector 120 for making in connector 120 rotation process
It is provided with the uniform circle distribution of 140,4 handles of 4 handles 140 on the outer circumference surface of connector 120.
During use, as it is shown in figure 5, eccentric abrasion prevention seat 10 be located at the wellhead tee joint pipe 30 at well head and polished rod sealer 20 it
Between, in i.e. wellhead tee joint pipe 30 is bolted in the second ennation 112 of lower base 110, the first ennation 102 spiral shell of upper pedestal 100
Being connected in polished rod sealer 20, polished rod 40 lower end used by oil pumping extends to shaft bottom, and upper end is close through eccentric abrasion prevention seat 10 and polished rod
Envelope device 20 extends outside and is connected with oil pumper.After eccentric abrasion prevention seat 10 is connected with wellhead tee joint pipe 30 and polished rod sealer 20,
Polished rod 40 will be arranged in the first through hole 103 and the second through hole 113.Owing to the second through hole 113 is shoulder hole, the second through hole 113
In the diameter of the first hole section 1131 less than the diameter of the second hole section 1132, the diameter of the first hole section 1131 and the first through hole 103
Equal diameters, eccentric abrasion prevention seat 10 is internal when wearing polished rod 40, and the first hole section 1131 has guide effect, and polished rod 40 once penetrates
After in first hole section 1131, polished rod 40 is easy to enter in the first through hole 103 from the first hole section 1131, and this structure is conducive to
Polished rod 40 is through eccentric abrasion prevention seat 10.
After eccentric abrasion prevention seat 10 is connected with wellhead tee joint pipe 30 and polished rod sealer 20 and uses a period of time, eccentric wear occurs
Now, rotation coupling 120 is at non-locking state, and is adjusted the position of upper pedestal 100, makes polished rod sealer
20 with wellhead tee joint pipe 30 centering, be rotated further by connector 120 and be at locking state, final eliminate eccentric wear phenomenon, increase
In the service life of polished rod 40, can effectively prevent oil leakage phenomenon.
The eccentric abrasion prevention seat 10 of said structure i.e. by connector 120 be connected with lower base 110 upper pedestal 100 is pressed under
On pedestal 110, so that upper pedestal 100 and lower base 110 have defined location relation.It is embodied as at other of the present invention
In example, as shown in Figure 6, can suitably change three's size, and change the arranged direction of connector 120, make lower base 110
Second matrix 111 is positioned at the second spacing hole 1221, and the second ennation 112 is through the first spacing hole 1211 and to away from upper pedestal
100 directions extend, and the first matrix 101 of upper pedestal 100 is bolted in the connecting portion 122 of connector 120, the pressure of connector 120
Tight portion 121 is pressed on the second matrix 111 of lower base 110.The eccentric abrasion prevention seat 10 of this structure is by connector 120 and upper pedestal
100 connect and are pressed on upper pedestal 100 by lower base 110.
It should be noted that in other specific embodiments of the present invention, connector can also be other structures, such as, even
Junctor is screw pressure plate structure, i.e. connects pressing plate and is connected with lower base 110 by screw, and pressing plate is pressed on upper pedestal 100, by adjusting
The tightness of whole screw just can make connector be in locking state or non-locking state.Pressing plate is pressed on upper pedestal 100
Part is compressed part, and the part being connected with lower base 110 by screw in pressing plate is connecting portion.
Embodiment 2
A kind of eccentric abrasion prevention seat 10 that the embodiment of the present invention is provided, it realizes principle and the technique effect of generation and aforementioned side
Method embodiment is identical, for briefly describing, and the not mentioned part of device embodiment part, refer in preceding method embodiment corresponding interior
Hold.
In the present embodiment, as it is shown in fig. 7, the first through hole 103 of upper pedestal 100 is provided with supporting positive cover 160, supporting positive cover 160
It is fixed in upper pedestal 100.Supporting positive cover 160 is nylon material, has preferable anti-wear performance, the internal diameter of supporting positive cover 160 and light
The external diameter of bar 40 matches.
As shown in Figure 8, after eccentric abrasion prevention seat 10 is connected with polished rod sealer 20 and wellhead tee joint pipe 30, polished rod 40 is arranged in be held up
In just overlapping 160, when polished rod sealer 20 misaligns with wellhead tee joint pipe 30, rotation coupling 120 is also at non-locking
After state, owing to the internal diameter of supporting positive cover 160 matches with the external diameter of polished rod 40, under the effect of polished rod 40, upper pedestal 100 can be certainly
Row moves along the radial direction of the first through hole 103, finally realizes the automatic centering of polished rod sealer 20 and wellhead tee joint pipe 30, right
In complete after be rotated further by connector 120 and be at locking state, polished rod sealer 20 begins with wellhead tee joint pipe 30 the most at last
It is in eventually under Shaft alignment state.
After eccentric abrasion prevention seat 10 is connected with polished rod sealer 20 and wellhead tee joint pipe 30, pump for a long time at polished rod 40
Under effect, upper pedestal 100 still is possible to be subjected to displacement on the radial direction of the first through hole 103, thus causes polished rod seal
Device 20 misaligns with well head.
Therefore, in the present embodiment, as it is shown in fig. 7, connector 120 is provided with locking device, locking device includes at least 3
Locking member 150, locking member 150 is screw.
In the present embodiment, locking member 150 is 4,4 locking member 150 circle distribution on connecting portion 122, locking member 150
Being spirally connected with connecting portion 122, one end of locking member 150 can penetrate in the second spacing hole 1221 and conflict with the first matrix 101.
During centering, first adjust the relative position of upper pedestal 100 and lower base 110, and rotation coupling 120 makes it
Being in locking state, now polished rod sealer 20 and wellhead tee joint pipe 30 are in Shaft alignment state, then adjust 4 locking members respectively
150, make the end of locking member 150 conflict with the first matrix 101, the final movement limiting upper pedestal 100.Even if it is long at polished rod 40
Under the effect of time, upper pedestal 100 also will not offset, and enhances the upper pedestal 100 that connector 120 is under locking state
Fastness.
Remaining structure of the present embodiment is same as in Example 1, does not repeats them here.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For Yuan, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made,
Equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. an eccentric abrasion prevention seat, for polished rod sealer is fixed on well head, described polished rod sealer is used for sealing polished rod, and it is special
Levy and be；
Including upper pedestal, lower base and connector, described upper pedestal is for being connected with described polished rod sealer, and described lower base is used
In being connected with described well head, described upper pedestal offers the first through hole passed for described polished rod, and described lower base offers confession
The second through hole that described polished rod passes；
Described upper pedestal is connected by described connector with described lower base, and described connector has locking state and non-locking shape
State, when described connector is in locking state, described upper pedestal contacts with described lower base and fixes, at described connector
When non-locking state, described upper pedestal can move along the radial direction of described first through hole relative to described lower base.
Eccentric abrasion prevention seat the most according to claim 1, it is characterised in that described connector include interconnective compressed part and
Connecting portion, described compressed part is pressed on described upper pedestal or lower base, and described connecting portion is removable with described lower base or upper pedestal
Unload connection.
Eccentric abrasion prevention seat the most according to claim 2, it is characterised in that described compressed part offers the first spacing hole, described
Connecting portion offers the second spacing hole, and described first spacing hole connects with described second spacing hole, the hole of described second spacing hole
Footpath is more than the aperture of described first spacing hole；
It is described second spacing that described upper pedestal includes that interconnective first matrix and the first ennation, described first matrix are positioned at
In hole, described first ennation extends through described first spacing hole and to the direction away from described lower base, described first base
The external diameter of body is less than the diameter of described second spacing hole, and the external diameter of described first ennation is straight less than described first spacing hole
Footpath.
Eccentric abrasion prevention seat the most according to claim 3, it is characterised in that described first spacing hole is same with described second spacing hole
Axle is arranged, and described first matrix is coaxially disposed with described first ennation.
Eccentric abrasion prevention seat the most according to claim 3, it is characterised in that described lower base includes interconnective second matrix
With the second ennation, described second matrix is connected with described connecting portion, and the most described second matrix of described second ennation is to far
Extending from the direction of described upper pedestal, the external diameter of described second ennation is less than the external diameter of described second matrix, and described second prolongs
Stretch body for being connected with described well head.
Eccentric abrasion prevention seat the most according to claim 5, it is characterised in that described second through hole includes the first hole being coaxially disposed
Section and the second hole section, described first hole section is opened in described second matrix, and described second hole section is opened in described second ennation,
The diameter of described first hole section is less than or equal to the first through hole less than the diameter of described second hole section, the diameter of described first hole section
Diameter.
Eccentric abrasion prevention seat the most according to claim 5, it is characterised in that described connecting portion is provided with female thread, described second base
Body is provided with the external screw thread matched with described female thread.
Eccentric abrasion prevention seat the most according to claim 3, it is characterised in that described connector is provided with locking device, described locking
Device includes that at least 3 locking members, 3 described locking member circle distribution are connected with described in described connecting portion, described locking member
Portion is spirally connected, and conflicts with described first matrix in one end of described locking member.
Eccentric abrasion prevention seat the most according to claim 1, it is characterised in that the surface that described upper pedestal contacts with described lower base
It is provided with annular groove, in described annular groove, is provided with sealing ring.
10. according to the eccentric abrasion prevention seat described in any one of claim 1-9, it is characterised in that be provided with inside described first through hole and hold up
Just overlapping, the internal diameter of described supporting positive cover matches with the diameter of described polished rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610763982.9A CN106194056A (en) | 2016-08-30 | 2016-08-30 | A kind of eccentric abrasion prevention seat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610763982.9A CN106194056A (en) | 2016-08-30 | 2016-08-30 | A kind of eccentric abrasion prevention seat |
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| CN106194056A true CN106194056A (en) | 2016-12-07 |
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| CN201610763982.9A Pending CN106194056A (en) | 2016-08-30 | 2016-08-30 | A kind of eccentric abrasion prevention seat |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747700A (en) * | 1971-10-26 | 1973-07-24 | Midway Fishing Tool Co | Oil well mandrel and stabilizing sleeve assembly |
| CN2534354Y (en) * | 2002-02-07 | 2003-02-05 | 中国石油天然气股份有限公司 | Eccentric wear prevention well mouth centralizer |
| CN2576959Y (en) * | 2002-10-13 | 2003-10-01 | 刘福秀 | Pumping well polish rod sealer |
| CN203729954U (en) * | 2013-11-27 | 2014-07-23 | 德阳市正兴机械制造厂 | Deviation-rectifying and adjusting device for oil pumping machine |
-
2016
- 2016-08-30 CN CN201610763982.9A patent/CN106194056A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747700A (en) * | 1971-10-26 | 1973-07-24 | Midway Fishing Tool Co | Oil well mandrel and stabilizing sleeve assembly |
| CN2534354Y (en) * | 2002-02-07 | 2003-02-05 | 中国石油天然气股份有限公司 | Eccentric wear prevention well mouth centralizer |
| CN2576959Y (en) * | 2002-10-13 | 2003-10-01 | 刘福秀 | Pumping well polish rod sealer |
| CN203729954U (en) * | 2013-11-27 | 2014-07-23 | 德阳市正兴机械制造厂 | Deviation-rectifying and adjusting device for oil pumping machine |
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Application publication date: 20161207 |