CN209670932U - A kind of oil extraction wellhead sealing device - Google Patents
A kind of oil extraction wellhead sealing device Download PDFInfo
- Publication number
- CN209670932U CN209670932U CN201920454602.2U CN201920454602U CN209670932U CN 209670932 U CN209670932 U CN 209670932U CN 201920454602 U CN201920454602 U CN 201920454602U CN 209670932 U CN209670932 U CN 209670932U
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- CN
- China
- Prior art keywords
- screw plug
- blind hole
- outer tube
- top board
- sealing device
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- 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.)
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Abstract
The utility model relates to a kind of oil extraction wellhead sealing device, the current well mouth sealing device sealing timeliness of effective solution is short, maintenance workload big problem；The technical solution of solution includes outer tube, one top board and a lower platen are installed in outer tube, rubber grain is filled between two pressing plates, first screw plug is installed on the upper surface of outer tube, housing pipe outer wall is equipped with the motor that the first screw plug can be driven to rotate, the multiple compression bars of circumference uniform distribution on the lower end surface of first screw plug, the upper end of first screw plug is provided with axial tapped blind hole, the bottom of tapped blind hole is equipped with a rubber ring, second screw plug is installed in tapped blind hole, a blind hole is provided on outer sleeve inner wall above top board, one piston is installed in blind hole, pressure spring is installed between piston and blind via bottom, blind via bottom is equipped with a motor switch；The utility model can carry out pressure compensation timely automatedly, avoid the generation of leakage accident, reduce maintenance number.
Description
Technical field
The utility model relates to oil production equipment field, specifically a kind of oil extraction wellhead sealing device.
Background technique
In field of oil field oil extraction, well liquid is leaked from well head in order to prevent, needs to install seal box on well head.Existing sealing
For box since reasons in structure is there are poor sealing effect, there are some improved sealings in response to this problem in the short problem of sealing cycle
Device is extended in sealing timeliness, such as the utility model patent of application number CN201620213579.4 by pressure compensation, is provided
It is a kind of by adjusting the device for squeezing support up and down and compensating to rubber grain therebetween pressure, but still need work people
Pressure compensation is overhauled and is carried out manually in member's timing, oil well quantity when more frequent maintenance workload it is very big, moreover, non-turn(a)round
Can not take timely measure if there is leakage causes crude oil to waste, and pollutes environment.
Utility model content
For above situation, for the defect for overcoming the prior art, the utility model provides a kind of production wellhead sealing dress
It sets, the current well mouth sealing device sealing timeliness of effective solution is short, maintenance workload big problem.
Its technical solution solved is a kind of oil extraction wellhead sealing device, including vertical outer tube, is installed in outer tube
There are a top board and a lower platen, top board can move up and down, rubber grain is filled between two pressing plates, outer tube
First screw plug is installed on upper surface, housing pipe outer wall is equipped with the motor that the first screw plug can be driven to rotate, the first screw plug
Lower end surface on the multiple compression bars of circumference uniform distribution, the lower end of multiple compression bars is contacted with top board；The upper end of first screw plug is provided with axis
To tapped blind hole, the bottom of tapped blind hole is equipped with a rubber ring, be installed with second screw plug in tapped blind hole, second
The compressible rubber ring of screw plug, top board, lower platen, the first screw plug and the second screw plug axis at be provided with for oil pumping polish rod
The through-hole passed through；Be provided with a blind hole on outer sleeve inner wall above top board, a piston be installed in blind hole, piston with it is blind
Pressure spring is installed, blind via bottom is equipped with a motor switch, and press down motor switch can make electric motor starting between the bottom of hole.
The utility model can carry out pressure compensation timely automatedly, avoid the generation of leakage accident, while greatly subtracting
Lack maintenance number, alleviates workload.
Detailed description of the invention
Fig. 1 is the utility model front sectional view.
Fig. 2 is the enlarged drawing of part A in Fig. 1.
Fig. 3 is the enlarged drawing of part B in Fig. 1.
Specific embodiment
Further description is made to specific embodiment of the present utility model below in conjunction with attached drawing.
It is provided by Fig. 1 to Fig. 3, the utility model includes vertical outer tube 1, and a top board 2 is equipped in outer tube 1
With a lower platen 3, top board 2 can be moved up and down, and rubber grain 4 is filled between two pressing plates, on the upper surface of outer tube 1
It is installed with first screw plug 5,1 outer wall of outer tube is equipped with the motor 6 that the first screw plug 5 can be driven to rotate, under the first screw plug 5
The multiple compression bars 7 of circumference uniform distribution on end face, the lower end of multiple compression bars 7 are contacted with top board 2；The upper end of first screw plug 5 is provided with axis
To tapped blind hole 8, the bottom of tapped blind hole 8 is equipped with a rubber ring 9, second screw plug is installed in tapped blind hole 8
10, the compressible rubber ring 9 of the second screw plug 10, top board 2, lower platen 3, the first screw plug 5 and the second screw plug 10 axis at it is equal
It is provided with the through-hole passed through for oil pumping polish rod；A blind hole 11 is provided on 1 inner wall of outer tube of the top of top board 2, in blind hole 11
One piston 12 is installed, pressure spring 13 is installed between 11 bottom of piston 12 and blind hole, 11 bottom of blind hole is equipped with a motor
Switch 14, press down motor switch 14 can be such that motor 6 starts.
The inner wall of the outer tube 1 is equipped with convex edge 15, and convex edge 15, which is supported on 3 bottom of lower platen, makes lower platen 3 will not
It moves down.
The lower surface of the top board 2 and the upper surface of lower platen 3 are provided with hemispheric nock, on two pressing plates
Nock is opposite；Semicircular nock can make top board 2 apply the pressure towards the center of circle to rubber grain 4 when moving down.
The feed opening 16 being provided between two pressing plates on the side wall of the outer tube 1, feed opening 16 are equipped with outside
Feed check valve 17 and switch valve 18；Rubber grain 4 can be filled in into outer tube 1 by feed opening 16.
It is toothed around in the external wall of upper portion of first screw plug 5, gear 19, gear is connected on the output shaft of motor 6
19 and the first gear teeth meshing on screw plug 5, the length of the gear teeth can guarantee nibbles with gear 19 always when the first screw plug 5 moves up and down
It closes；Motor 6 is driven by battery.
The second screw plug 10 relatively rotates with the first screw plug 5 when to prevent the first screw plug 5 from rotating, second screw plug
10 tail portion is equipped with the vertical bar that can be twitched up and down 20, and multiple vertical deep gouges 21 are provided on the upper surface of the first screw plug 5,
Multiple deep gouges 21 are uniformly distributed in 8 excircle of tapped blind hole, and the lower end of vertical bar 20 can be inserted into deep gouge 21.
When the utility model is used, the lower end of outer tube 1 through screw thread spinning on well head, oil pumping polish rod is successively from pushing
Plate 3, top board 2, the first screw plug 5, rubber ring 9 and the second screw plug 10 through-hole in pass through, then tightening the second screw plug 10 makes it
Rubber ring 9 is compressed, rubber ring 9 is adjacent to the sealing of polished rod realization herein；Then the switch valve 18 on feed opening 16 is opened, to two
Fill in rubber grain 4 between pressing plate, then shut switch valve 18, the first screw plug 5 of rotation moves down it, multiple compression bars 7 to
Top board 2 is pushed, top board 2 and lower platen 3, which squeeze intermediate rubber grain 4, makes it realize sealing to polished rod is compressed.
Due to the pressure and frequent pressure oscillation of oil gas in oil well and oil liquid, the sealing performance of rubber grain 4 declines,
The oil gas in oil well or oil liquid can leak into 1 cavity of outer tube of 2 top of top board at this time, the pressure liter in this cavity
Height will push piston 12 and overcome the effect of pressure spring 13 mobile to the bottom of blind hole 11, until 12 press down motor switch 14 of piston, electricity
The starting of machine 6, motor 6 drives the rotation of the first screw plug 5 by gear 19, declines the first screw plug 5, multiple below the first screw plug 5
Compression bar 7 pushes top board 2 to move down to 4 compensation pressure of rubber grain, seals it effectively, meanwhile, the decline of top board 2 makes upper part
Cavity volume become larger, in pressure decline, piston 12 be displaced outwardly under the action of pressure spring 13 unclamp motor switch 14, electricity
Machine 6 is closed, and the first screw plug 5 no longer moves down, and when next 4 sealing leak of rubber grain, repeats the above steps and carries out pressure to it
Compensation.
When needing to 9 compensation pressure of rubber ring, vertical bar 20 is extracted out out of deep gouge 21, then rotating the second screw plug 10 makes
It is moved down, while keeping vertical bar 20 after rotation opposite with one of deep gouge 21, is then inserted into 20 lower end of vertical bar in deep gouge 21 i.e.
It can.
The rubber ring 9 also can be replaced rubber grain 4, and since it is not subject to the high pressure in well, and pressure is without fluctuation,
Therefore it, which seals timeliness, can be significantly hotter than the rubber grain 4 between two pressing plates, can effectively guarantee in use process herein
Sealing effect.
The utility model can carry out pressure compensation timely automatedly, ensure that when the decline of the sealing effect of rubber grain 4
Safety in utilization, avoids the generation of leakage accident, while considerably reducing maintenance number, alleviates workload.
Claims (6)
1. a kind of oil extraction wellhead sealing device, including vertical outer tube (1), which is characterized in that be equipped with one in outer tube (1)
A top board (2) and a lower platen (3), top board (2) can move up and down, and be filled with rubber grain (4) between two pressing plates,
First screw plug (5) is installed on the upper surface of outer tube (1), outer tube (1) outer wall, which is equipped with, can drive the first screw plug (5)
The motor (6) of rotation, the multiple compression bars of circumference uniform distribution (7) on the lower end surface of the first screw plug (5), the lower end of multiple compression bars (7) with
Top board (2) contact；The upper end of first screw plug (5) is provided with axial tapped blind hole (8), and the bottom of tapped blind hole (8) is equipped with
One rubber ring (9), tapped blind hole (8) is interior to be installed with second screw plug (10), the second screw plug (10) compressible rubber ring
(9), it is provided at the axis of top board (2), lower platen (3), the first screw plug (5) and the second screw plug (10) for oil pumping polish rod
The through-hole passed through；It is provided with a blind hole (11) on outer tube (1) inner wall above top board (2), is equipped with one in blind hole (11)
A piston (12) is equipped with pressure spring (13) between piston (12) and blind hole (11) bottom, and blind hole (11) bottom is equipped with an electricity
Machine switchs (14), and press down motor switch (14) can be such that motor (6) start.
2. a kind of oil extraction wellhead sealing device according to claim 1, which is characterized in that the outer tube (1) it is interior
Wall is equipped with convex edge (15), and convex edge (15), which are supported on lower platen (3) bottom, move down lower platen (3) will not.
3. a kind of oil extraction wellhead sealing device according to claim 1, which is characterized in that under the top board (2)
Surface and the upper surface of lower platen (3) are provided with hemispheric nock, and the nock on two pressing plates is opposite.
4. a kind of oil extraction wellhead sealing device according to claim 1, which is characterized in that the side of the outer tube (1)
The feed opening (16) being provided between two pressing plates on wall, feed opening (16) are equipped with feed check valve (17) and switch valve outside
(18).
5. a kind of oil extraction wellhead sealing device according to claim 1, which is characterized in that first screw plug (5)
It is toothed around, is connected on the output shaft of motor (6) gear (19) in external wall of upper portion, on gear (19) and the first screw plug (5)
Gear teeth meshing, the length of the gear teeth can guarantee to be engaged with gear (19) always when the first screw plug (5) move up and down.
6. a kind of oil extraction wellhead sealing device according to claim 1, which is characterized in that second screw plug (10)
Tail portion is equipped with the vertical bar that can be twitched up and down (20), is provided with multiple vertical deep gouges on the upper surface of the first screw plug (5)
(21), multiple deep gouges (21) are uniformly distributed in tapped blind hole (8) excircle, and the lower end of vertical bar (20) can be inserted into deep gouge (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920454602.2U CN209670932U (en) | 2019-04-04 | 2019-04-04 | A kind of oil extraction wellhead sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920454602.2U CN209670932U (en) | 2019-04-04 | 2019-04-04 | A kind of oil extraction wellhead sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209670932U true CN209670932U (en) | 2019-11-22 |
Family
ID=68573614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920454602.2U Expired - Fee Related CN209670932U (en) | 2019-04-04 | 2019-04-04 | A kind of oil extraction wellhead sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209670932U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319094A (en) * | 2021-06-03 | 2021-08-31 | 刘萍 | A prevent leaking device that is used for multi-functional monitoring well of landfill |
| CN113324033A (en) * | 2021-06-03 | 2021-08-31 | 刘萍 | Multifunctional monitoring well mouth plugging device for refuse landfill |
-
2019
- 2019-04-04 CN CN201920454602.2U patent/CN209670932U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319094A (en) * | 2021-06-03 | 2021-08-31 | 刘萍 | A prevent leaking device that is used for multi-functional monitoring well of landfill |
| CN113324033A (en) * | 2021-06-03 | 2021-08-31 | 刘萍 | Multifunctional monitoring well mouth plugging device for refuse landfill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191122 Termination date: 20200404 |