CN208918480U - A kind of anti-bias mill apparatus of well head - Google Patents
A kind of anti-bias mill apparatus of well head Download PDFInfo
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- CN208918480U CN208918480U CN201821482847.8U CN201821482847U CN208918480U CN 208918480 U CN208918480 U CN 208918480U CN 201821482847 U CN201821482847 U CN 201821482847U CN 208918480 U CN208918480 U CN 208918480U
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- well head
- shield
- mill apparatus
- disk body
- polished rod
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Abstract
The utility model relates to a kind of anti-bias mill apparatus of well head, the device includes self-centering chuck, the self-centering chuck includes disk body and at least two claws, all claws are distributed along disk body even circumferential, all claws are mounted on the rolling element for contacting with polished rod along radial being equidistant away from disk body center of disk body, all claws；Shield is additionally provided on the anti-bias mill apparatus of the well head；The anti-bias mill apparatus of the well head can be with packing gland releasable connection below.The anti-bias mill apparatus of well head described in the utility model can quickly and accurately adjust position of the polished rod axis relative to packing axis, coaxial with packing up to realizing, avoid abrasion of the polished rod deflection to packing.
Description
Technical field
The utility model relates to a kind of anti-bias mill apparatus of well head.
Background technique
In oil extraction in oil field production process, pumpingh well mainly realizes the dynamic sealing at wellhead polish rod by packing box, still, when
When polished rod generates deflection during moving up and down in packing box, packing can be accelerated to wear, thus increase the frequency of replacement packing,
Increase cost.
One kind is described in the Chinese patent document that a notification number is CN204152471U disclosed on 2 11st, 2015
Blowout preventer (in attached drawing Fig. 1 be the blowout preventer structural schematic diagram), include in the blowout preventer packing 1, be located at 1 lower section of packing and with
The coaxial packing lower cover 9 of packing 1 is threadedly coupled and coaxial main cylinder 2 and the centering guide machine for eccentric abrasion prevention with packing lower cover 9
Structure 3, cylinder 2 and packing lower cover 9 are coaxial because based on, and because packing lower cover 9 and packing 1 are coaxial, main cylinder 2 and packing 1
Coaxially.Righting mechanism 3 is mounted on main cylinder 2, righting mechanism 3 altogether there are four, and along main 2 even circumferential of cylinder be distributed, centering guide machine
Structure 3 includes the side neck 31 being fixed on main cylinder 2, and for the axis of side neck 31 perpendicular to the axis of main cylinder 2, righting mechanism 3 further includes wearing
The mandril 32 that side neck 31 is used to righting polished rod 4 is crossed, passes through ball hinge 34 on mandril 32 and steel ball 33, mandril 32 and side neck 31 is installed
It is threadedly engaged.In use, rotating four mandrils 32 respectively, the steel ball 33 on 32 top of mandril pushes and buttresses light the righting mechanism 3
Bar 4 guarantees that polished rod 4 and main cylinder 2 are coaxial, and cylinder 2 and packing 1 are coaxial because based on, it is possible to guarantee that polished rod 4 and packing 1 are coaxial, from
And avoid friction phenomenon.
It can be seen from the above, due to four mandrils 32 and asynchronous, so worker, needs to rotate in operation four tops respectively
Bar 32, and the position for needing accurately to guarantee that four mandrils 32 eventually arrive at can make polished rod 4 and packing 1 coaxial, whole process
The time for needing to spend is more, and working efficiency is lower.
Utility model content
The purpose of the utility model is to provide a kind of anti-bias mill apparatus of well head, to solve at present by adjusting polished rod and disk
Root is coaxial and realizes the lower problem of the mode efficiency of eccentric abrasion prevention.
To achieve the above object, the anti-bias mill apparatus of well head described in the utility model uses following technical scheme: the well head
Anti-bias mill apparatus includes self-centering chuck, and self-centering chuck includes disk body and at least two claws, and all claws are along disk body circumference
It is uniformly distributed, all claws are mounted on along radial being equidistant away from disk body center of disk body, all claws to be used for and polished rod
The rolling element of contact.
The beneficial effects of the utility model are: the packing gland of the anti-bias mill apparatus of the well head and well head is connected and fixed, and
And both guarantee it is coaxial, and then realize it is coaxial with packing, using self-centering chuck make thereon all claw synchronizing movings it is final
Reach self-centering characteristic, fast implements the coaxial of polished rod across self-centering chuck and the anti-bias mill apparatus of the well head, and because
The anti-bias mill apparatus of the well head and packing are coaxial, so the coaxial of polished rod and packing is achieved that, so as to avoid polished rod and packing
Eccentric wear problem, operate it is very quick, efficiency is very high.
Further, bracket is installed close to disk body center is removable on claw, rolling element is rack-mount.
Effect improved in this way is: installing rolling element by bracket and avoids to install rolling element on claw ontology, blocks
There is no need to special customized for pawl, it is only necessary to purchase from the market.
Further, above-mentioned rolling element is idler wheel.
Beneficial effect improved in this way is: rolling element is idler wheel, is easily installed.
Further, the concave arc that the tyre tread of above-mentioned rollers is set as and wants the polished rod of righting to match.
Beneficial effect improved in this way is: being conducive to the more stable righting polished rod of idler wheel.
Further, the disk body of self-centering chuck be equipped with for and lower section packing gland releasable connection be located by connecting
Hole.
Beneficial effect improved in this way is: self-centering chuck is fixed by releasable connection and packing gland, convenient for self-centering
The disassembly of chuck, while can be realized the coaxial of self-centering chuck and packing gland.
Further, shield is equipped with above self-centering chuck, be provided on shield it is passing through for polished rod, be opened on side wall the
One notch and the second notch being opened on upper surface are also provided with for the freely through third notch of claw on shield.
Beneficial effect improved in this way is: setting shield can enter in self-centering chuck to avoid sand and dust, toy etc.,
The first notch is opened up on shield can be entered in shield by the side wall of shield for the ease of polished rod when mounting strap, on shield
Opening up the second notch is opened on shield to enable polished rod to be horizontally through the upper surface of shield and reach the center of shield
If third notch is in order to which the claw on self-centering chuck can pass freely through shield side wall.
Further, above-mentioned shield, which is equipped with, is fixed on the limited block on self-centering chuck, limited block a part for shield
It is fixed with shield lateral wall lower part, another part of limited block stretches out the lower edge of shield lateral wall, to block when being used for mounting strap
Firmly self-centering chuck.
Beneficial effect improved in this way is: guaranteeing the fixation of shield and self-centering chuck.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of blowout preventer described in background technology；
Fig. 2 is the use state explosive view of the embodiment 1 of the anti-bias mill apparatus of well head described in the utility model；
In attached drawing: 1- packing, the main cylinder of 2-, 3- righting mechanism, 4- polished rod, 5- packing gland, 6- scroll chuck, 7- shield,
8- spanner, 9- packing lower cover, 31- side neck, 32- mandril, 33- steel ball, 34- ball hinge, 61- disk body, 62- claw, 63- branch
Frame, 64- idler wheel, 65- bevel gear set, 71- limited block, the first notch of 72-, the second notch of 73-, 74- third notch.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.
The embodiment 1 of the anti-bias mill apparatus of well head described in the utility model includes self-centering chuck and shield, in the implementation
In example 1, above-mentioned self-centering chuck is common scroll chuck in field of machining.
As shown in Fig. 2, scroll chuck 6 includes disk body 61 and three claws 62, three 62 upper surfaces of claw are close to disk body 61
The position at center is equipped with threaded hole, is equipped with bracket 63 by the threaded hole, which is " H-type " structure, in " H-type "
One idler wheel 64 for being used to contact with polished rod 4 is installed, which is close to polished rod 4 one between the two opposite side plates in the top of structure
Side protrudes from bracket 63, and protrudes from the end face that claw 62 is close to 4 side of polished rod, and the tyre tread of the idler wheel 64 is arranged to and polished rod 4
The concave arc that profile matches smoothly buttresses polished rod 4 convenient for idler wheel 64.Three claws 62 are along 6 even circumferential of scroll chuck
Distribution, three claws 62 are along radial being equidistant away from 61 center of disk body of disk body 61.
It is equipped with shield 7 above scroll chuck 6, is provided with the first notch 72 passing through for polished rod, being opened on side wall on shield 7
With the second notch 73 being opened on upper surface, also it is provided with for the freely through third notch 74 of claw 62, the first notch on shield
72 and second the opening width size of notch 73 should be slightly bigger than the diameter of polished rod 4, third notch 74 is " U-shaped " notch, third
The width and height of notch 74 should be able to ensure that claw 62 passes freely through the notch, and 7 lower end of shield is additionally provided with three and is used to block
The firmly limited block 71 of the disk body 61 of scroll chuck 6, limited block 71 are evenly arranged on shield lower sidewall, and limited block 71 is bar shaped block,
The section of limited block 71 is semicircle, and the straightway in section is close to the center of shield 7, and 71 a part of limited block is weldingly fixed on shield
7 lower sidewalls are covered, another part extends to outside 7 side wall of shield.
Packing gland 5 is located above packing and the two is coaxial.Scroll chuck 6 is fixedly connected by bolt with packing gland 5,
It is provided with matched positioning bolt hole on the disk body 61 of scroll chuck 6, can guarantee that scroll chuck 6 and packing gland 5 are coaxial, in turn
Realization scroll chuck 6 is coaxial with packing.
Other shapes, such as rectangle also can be set into third notch on above-mentioned shield, can be certainly as long as meeting claw
By entering and leaving.
Other shapes, such as cuboid also can be set into limited block on above-mentioned shield, and limited block can also be arranged
It is the structure that shield side wall extends out at the structure with shield one, as long as scroll chuck can be fixed on for shield by meeting
It is upper.
The tyre tread of above-mentioned idler wheel can also be not provided with into concave arc, and be arranged to smooth tyre tread, as long as can protect
Demonstrate,prove the steady righting polished rod of idler wheel.
Above-mentioned idler wheel is also readily modified as ball, and ball is rack-mount, and ball mounting hole is provided on bracket, guarantees rolling
Pearl part protruding bracket with respect to polished rod side and will not be rolled out out of mounting hole, ball can freely roll in mounting hole,
Sliding friction is replaced with rolling friction using the rolling characteristic of ball, effectively reduces frictional dissipation.
Bracket can also be not provided on above-mentioned claw, idler wheel or ball are directly installed on the end that polished rod is close on claw
Portion equally can satisfy requirement.
Above-mentioned scroll chuck is also possible to two-jaw(ed)chuck, if two-jaw(ed)chuck, need to guarantee two claws be in polished rod and
In the plane for the horse head bar composition for driving polished rod to move up and down；In addition chuck equally meets requirement；Certainly, if being changed to
Two-jaw(ed)chuck or chuck, shield should also make corresponding modification.
When mill apparatus anti-bias using the well head, secured the device on the packing gland 5 above packing first, so
The bevel gear set inside scroll chuck 6 is controlled by the control mouth on disk body 61 using the matched spanner 8 of scroll chuck 6 afterwards
65, and then make three 62 synchronizing movings of claw, until the idler wheel 64 on bracket 63 helps tight polished rod 4.Because of three claws 62
Being equidistant away from 61 axle center of disk body and be synchronizing moving, bracket 63 is again fixed with claw 62, so final idler wheel 64 helps tight light
When bar 4, it can be realized polished rod 4 and scroll chuck 6 be coaxial, and because scroll chuck 6 and packing gland 5 are coaxial, 5 He of packing gland
Packing is coaxial, so can finally guarantee that polished rod 4 and packing are coaxial, effectively prevent the eccentric wear of polished rod and packing.Whole operation
Process is simple, quick, greatly improves work efficiency.
Claims (7)
1. a kind of anti-bias mill apparatus of well head, characterized in that including self-centering chuck, the self-centering chuck includes disk body and at least
Two claws, all claws are distributed along disk body even circumferential, and all claws are along radial being equidistant away from disk body center of disk body, institute
There is the rolling element being equipped on claw for contacting with polished rod.
2. the anti-bias mill apparatus of well head according to claim 1, characterized in that can close to disk body center on the claw
It dismounts and mounts equipped with bracket, rolling element is installed on the bracket.
3. the anti-bias mill apparatus of well head according to claim 1 or 2, characterized in that the rolling element is idler wheel.
4. the anti-bias mill apparatus of well head according to claim 3, characterized in that the tyre tread of the idler wheel is concave arc, with
Its polished rod contacted matches.
5. the anti-bias mill apparatus of well head according to claim 1, characterized in that the disk body of the self-centering chuck, which is equipped with, to be used
In the hole that is located by connecting with lower section packing gland releasable connection.
6. the anti-bias mill apparatus of well head according to claim 1, characterized in that shield is equipped with above the self-centering chuck,
The second notch for being provided with the first notch passing through for polished rod, being opened on side wall on the shield and being opened on upper surface, it is described
It is also provided on shield for the freely through third notch of claw.
7. the anti-bias mill apparatus of well head according to claim 6, characterized in that the shield, which is equipped with, is fixed on shield certainly
Limited block on centering chuck, described limited block a part are fixed with shield lateral wall lower part, another part of the limited block
The lower edge of shield lateral wall is stretched out, to block self-centering chuck when being used for mounting strap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821482847.8U CN208918480U (en) | 2018-09-11 | 2018-09-11 | A kind of anti-bias mill apparatus of well head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821482847.8U CN208918480U (en) | 2018-09-11 | 2018-09-11 | A kind of anti-bias mill apparatus of well head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208918480U true CN208918480U (en) | 2019-05-31 |
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ID=66705075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821482847.8U Active CN208918480U (en) | 2018-09-11 | 2018-09-11 | A kind of anti-bias mill apparatus of well head |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110522058A (en) * | 2019-09-16 | 2019-12-03 | 宋从俊 | One kind is for aquaculture feeds drying granulation integrated equipment |
| CN117927175A (en) * | 2024-03-21 | 2024-04-26 | 东营华辰石油装备有限公司 | Polished rod sealer |
| CN117927175B (en) * | 2024-03-21 | 2024-06-04 | 东营华辰石油装备有限公司 | Polished rod sealer |
-
2018
- 2018-09-11 CN CN201821482847.8U patent/CN208918480U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110522058A (en) * | 2019-09-16 | 2019-12-03 | 宋从俊 | One kind is for aquaculture feeds drying granulation integrated equipment |
| CN117927175A (en) * | 2024-03-21 | 2024-04-26 | 东营华辰石油装备有限公司 | Polished rod sealer |
| CN117927175B (en) * | 2024-03-21 | 2024-06-04 | 东营华辰石油装备有限公司 | Polished rod sealer |
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