CN208830936U - A kind of double envelope blowout preventers of oil pumping machine well head - Google Patents
A kind of double envelope blowout preventers of oil pumping machine well head Download PDFInfo
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- CN208830936U CN208830936U CN201821136061.0U CN201821136061U CN208830936U CN 208830936 U CN208830936 U CN 208830936U CN 201821136061 U CN201821136061 U CN 201821136061U CN 208830936 U CN208830936 U CN 208830936U
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Abstract
The utility model discloses a kind of double envelope blowout preventers of oil pumping machine well head, including upper blowout preventer and lower blowout preventer setting up and down；The lower blowout preventer contains the pressing sleeve (8) being successively arranged from inside to outside, inner sleeve (13) and housing (11), the upper end of housing (11) is connected and fixed with the upper blowout preventer, shut-in well cushion rubber (9) is also arranged in inner sleeve (13), pressing sleeve (8) and shut-in well cushion rubber (9) are setting up and down, convex ring is equipped in the upper end of housing (11), the convex ring can be abutted with pressing sleeve (8), inner sleeve (13) is externally provided with external screw thread, internal screw thread is equipped in housing (11), inner sleeve (13) is threadedly coupled with housing (11), when screwing housing (11), pressing sleeve (8) can squeeze shut-in well cushion rubber (9) and make cushion rubber (9) generation radial deformation of shunting in a well.The shut-in well of the double envelope blowout preventers of the oil pumping machine well head works well, and no longer needs to carry out kill-job operation when blowout preventer in maintenance, avoids and impact to yield.
Description
Technical field
The utility model relates to oil production equipment fields, and particularly a kind of oil pumping machine well head is double seals blowout preventers.
Background technique
Currently, after rod-pumped well when replacing well head sealing packing, generallys use blowout preventer shut-in well, to packing in packing box
It is replaced.After blowout preventer is using the regular period, the failures such as aging, abrasion can occur for the seal rubber part of blowout preventer, make
It fails at blowout preventer.Blowout preventer is opened not in place especially in employee's operating process, or is forgotten to turn on, and is just carried out to pumping unit
Start-up operation causes blowout preventer rubber seal portion Fast Wearing, causes well head that can not close when replacing packing, packing can not
Replacement, then need to repair it.And repair blowout preventer every time and require to carry out circulation kill-job operation, it is not only time-consuming and laborious,
And influence yield.
Utility model content
In order to solve the problems, such as that existing Wellhead packer is not easy to maintenance.The utility model provides a kind of oil pumping machine well head
Double envelope blowout preventers, the double envelope blowout preventers of the oil pumping machine well head are kept it turned on for a long time in daily production, and are sent out in upper blowout preventer
When raw failure needs repairing, then well head can be closed, yield caused by kill-job operation is avoided by closing lower blowout preventer
It influences.
The utility model solves that technical application used by its technical problem is novel to be: a kind of double envelope shut-in wells of oil pumping machine well head
Device, including upper blowout preventer and lower blowout preventer setting up and down；The lower blowout preventer contains the pressing sleeve being successively arranged from inside to outside, inner sleeve
And housing, housing are in upright state, the upper end of housing is connected and fixed with the upper blowout preventer, and shut-in well glue is also arranged in inner sleeve
Circle, pressing sleeve and shut-in well cushion rubber are setting up and down, and convex ring is equipped in the upper end of housing, which can abut with pressing sleeve, inner sleeve
It is externally provided with external screw thread, is equipped with internal screw thread in housing, inner sleeve is connect with sleeve thread, and when screwing housing, pressing sleeve can squeeze envelope
Well cushion rubber simultaneously makes cushion rubber generation radial deformation of shunting in a well.
Baffle ring is arranged in inner sleeve, baffle ring is located at the lower section of shut-in well cushion rubber.
Lower convex ring is equipped in the lower end of inner sleeve, which can stop baffle ring along the axial movement of inner sleeve.
The second sealing ring is arranged between inner sleeve and housing.
The jackscrew for being equipped with and housing and inner sleeve capable of being made to fix is put on outside.
The outer diameter of pressing sleeve is equal to the internal diameter of inner sleeve, and the outer diameter for cushion rubber of shunting in a well is equal to the internal diameter of inner sleeve.
The upper blowout preventer contains the shell of tubular, and shell is in a horizontal state, and left seal assembly and the right side are arranged in shell
Seal assembly, the left seal assembly and right seal assembly mirror image each other.
Along the centerline direction of shell, which contains sequentially connected lead screw, gland, spool and shut-in well glue
One end of block, lead screw is set to outside shell, and the other end of lead screw is set in shell.
Gland is threadedly coupled with shell, and lead screw is threadedly coupled with gland, and when screwing lead screw, spool and shut-in well blob of viscose can
The synchronous centerline direction along shell moves.
Shell is fixedly connected with housing, the first sealing ring is arranged between spool and shell, between spool and shut-in well blob of viscose
Fixation is bolted.
The beneficial effects of the utility model are: the double envelope blowout preventers of the oil pumping machine well head are kept it turning on for a long time in daily production
State, and when upper blowout preventer breaks down and needs repairing, then well head can be closed, avoided by closing lower blowout preventer
Yield effect caused by kill-job operation.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
Fig. 1 is the use state diagram of the double envelope blowout preventers of oil pumping machine well head described in the utility model.
Fig. 2 is in Fig. 1 along the cross-sectional view in the direction A-A.
1, packing box；2, lead screw；3, gland；4, guide blot；5, spool；6, the first sealing ring；7, shut-in well blob of viscose；8,
Pressing sleeve；9, shut-in well cushion rubber；10, jackscrew；11, housing；12, the second sealing ring；13, inner sleeve；14, bolt；15, polished rod；16, it keeps off
Ring；17, shell.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of double envelope blowout preventers of oil pumping machine well head, including upper blowout preventer and lower blowout preventer setting up and down；The lower blowout preventer
Containing pressing sleeve 8, inner sleeve 13 and the housing 11 being successively arranged from inside to outside, pressing sleeve 8, inner sleeve 13 and housing 11 are in upright state,
The upper end of housing 11 is connected and fixed with the upper blowout preventer, and shut-in well cushion rubber 9, pressing sleeve 8 and shut-in well cushion rubber 9 are also arranged in inner sleeve 13
It is setting up and down, convex ring is equipped in the upper end of housing 11, which can abut with pressing sleeve 8, and inner sleeve 13 is externally provided with external screw thread,
Internal screw thread is equipped in housing 11, inner sleeve 13 is threadedly coupled with housing 11, and when screwing housing 11, pressing sleeve 8 can squeeze shut-in well glue
Circle 9 simultaneously makes the generation radial deformation of cushion rubber 9 of shunting in a well, as depicted in figs. 1 and 2.
In the present embodiment, it is arranged with three shut-in well cushion rubbers 9 in inner sleeve 13, is also arranged with baffle ring 16, baffle ring in inner sleeve 13
16 are located at the lower section of three shut-in well cushion rubbers 9, and pressing sleeve 8, shut-in well cushion rubber 9 and baffle ring 16 are arranged successively from the top down.Under inner sleeve 13
Lower convex ring is equipped in end, which can stop the moving axially downwards along inner sleeve 13 of baffle ring 16.
In the present embodiment, the second sealing ring 12 is arranged between inner sleeve 13 and housing 11.Housing 11, which is equipped with, to be made
The jackscrew 10 that housing 11 and inner sleeve 13 are fixed.The outer diameter of pressing sleeve 8 is equal to the internal diameter of inner sleeve 13, and the outer diameter of shut-in well cushion rubber 9 is equal to interior
The internal diameter of set 13, as shown in Figure 1.
In the present embodiment, the upper blowout preventer contains the shell 17 of tubular, and shell 17 is in a horizontal state, in shell 17
It is arranged with left seal assembly and right seal assembly, the left seal assembly and right seal assembly mirror image each other.Along the center of shell 17
Line direction (i.e. left and right directions in Fig. 1), the left seal assembly contain sequentially connected lead screw 2, gland 3, spool 5 and shut-in well glue
Block 7, one end of lead screw 2 are set to outside shell 17, and the other end of lead screw 2 is set in shell 17.
In the present embodiment, gland 3 is threadedly coupled with shell 17, and lead screw 2 is threadedly coupled with gland 3, lead screw 2 it is another
End and 5 grafting of spool, when screwing lead screw 2, spool 5 being capable of the synchronous centerline direction shifting along shell 17 with shut-in well blob of viscose 7
It is dynamic.
In the present embodiment, shell 17 is fixedly connected with housing 11, and the first sealing ring is arranged between spool 5 and shell 17
6, it is connected and fixed between spool 5 and shut-in well blob of viscose 7 by bolt 14.Shell 17 is equipped with guide blot 4, and spool 5, which is externally provided with, leads
To slot, one end and the shell 17 of guide blot 4 are connected and fixed, and the other end of guide blot 4 is plugged in the guide groove.When screwing
When housing 11, shell 17 is rotated synchronously with housing 11.
In the present invention, the lower blowout preventer is spare blowout preventer, and the upper blowout preventer is common blowout preventer.It is daily
When replacing packing, upper blowout preventer is used as shut-in well.Upper blowout preventer mainly passes through lead screw 2 with movable valve plug 5 and connected to it
Blob of viscose 7 or so of shunting in a well back and forth is run, and realizes shut-in well.When lead screw 2 is run outward, band movable valve plug 5 and connected to it is driven
Blob of viscose 7 of shunting in a well opens 15 channel of polished rod, runs convenient for about 15 polished rod.Lead screw 2 inwardly run when, drive band movable valve plug 5 with
And shut-in well blob of viscose 7 connected to it blocks polished rod 15, and blowout preventer top is made to realize sealing.Gland 3 play positioning lead screw 2 and with silk
The effect that thick stick 2 is threadedly engaged.First sealing ring 6 is for separating 5 interior or exterior space of spool.
Lower blowout preventer is cylindrical structure, and housing 11, using being threadedly coupled, generates axial position by relative rotation with inner sleeve 13
It moves.When closed, housing 11 and above section are rotated clockwise, shut-in well cushion rubber 9 is pushed simultaneously by pushing pressing sleeve 8, so that envelope
Well cushion rubber 9 generates transverse elasticity deformation, generates sealing to polished rod 15.Rotary sleeve 11 counterclockwise and above section, housing 11 with
Axial distance lengthens between inner sleeve 13, and pressing sleeve 8 and shut-in well cushion rubber 9 are detached from compressive state, depressurization.
When upper blowout preventer is as daily replacement packing, shut-in well is used.Daily lower blowout preventer is normally open, in upper blowout preventer
It closes and uses when failure maintenance.The shut-in wells of the double envelope blowout preventers of the oil pumping machine well head work well, and when maintenance no longer needs to carry out kill-job
Operation, single avoid influencing 24 hourly outputs.
The above, only specific embodiment of the utility model cannot limit the range that utility model is implemented, institute with it
With the displacement of its equivalent assemblies, or according to equivalent variations made by the utility model patent protection scope and modification, should all still fall within
The scope that this patent is covered.In addition, between technical characteristic and technical characteristic in the utility model, technical characteristic and technical application
Between novel, technical application it is novel it is novel with technical application between use can be freely combined.
Claims (10)
1. a kind of double envelope blowout preventers of oil pumping machine well head, which is characterized in that the double envelope blowout preventers of the oil pumping machine well head include setting up and down
Upper blowout preventer and lower blowout preventer；The lower blowout preventer contains the pressing sleeve (8) being successively arranged from inside to outside, inner sleeve (13) and housing
(11), housing (11) is in upright state, and the upper end of housing (11) is connected and fixed with the upper blowout preventer, is also arranged in inner sleeve (13)
Have shut-in well cushion rubber (9), pressing sleeve (8) and shut-in well cushion rubber (9) are setting up and down, convex ring are equipped in the upper end of housing (11), this is convex
Ring can be abutted with pressing sleeve (8), and inner sleeve (13) is externally provided with external screw thread, be equipped with internal screw thread, inner sleeve (13) and housing in housing (11)
(11) it is threadedly coupled, when screwing housing (11), pressing sleeve (8) can squeeze shut-in well cushion rubber (9) and make cushion rubber (9) generation diameter of shunting in a well
To deformation.
2. the double envelope blowout preventers of oil pumping machine well head according to claim 1, which is characterized in that be arranged with baffle ring in inner sleeve (13)
(16), baffle ring (16) is located at the lower section of shut-in well cushion rubber (9).
3. the double envelope blowout preventers of oil pumping machine well head according to claim 2, which is characterized in that be equipped in the lower end of inner sleeve (13)
Lower convex ring, the lower convex ring can stop baffle ring (16) along the axial movement of inner sleeve (13).
4. the double envelope blowout preventers of oil pumping machine well head according to claim 1, which is characterized in that inner sleeve (13) and housing (11) it
Between be arranged with the second sealing ring (12).
5. the double envelope blowout preventers of oil pumping machine well head according to claim 1, which is characterized in that housing (11), which is equipped with, to be made
The jackscrew (10) that housing (11) and inner sleeve (13) are fixed.
6. the double envelope blowout preventers of oil pumping machine well head according to claim 1, which is characterized in that the outer diameter of pressing sleeve (8) is equal to interior
The internal diameter of (13) is covered, the outer diameter of shut-in well cushion rubber (9) is equal to the internal diameter of inner sleeve (13).
7. the double envelope blowout preventers of oil pumping machine well head according to claim 1, which is characterized in that the upper blowout preventer contains tubular
Shell (17), shell (17) is in a horizontal state, and is arranged with left seal assembly and right seal assembly in shell (17), the left sealing
Component and right seal assembly mirror image each other.
8. the double envelope blowout preventers of oil pumping machine well head according to claim 7, which is characterized in that along the center line side of shell (17)
To, which contains sequentially connected lead screw (2), gland (3), spool (5) and shunts in a well blob of viscose (7), and the one of lead screw (2)
End is set to shell (17) outside, and the other end of lead screw (2) is set in shell (17).
9. the double envelope blowout preventers of oil pumping machine well head according to claim 8, which is characterized in that gland (3) and shell (17) spiral shell
Line connection, lead screw (2) is threadedly coupled with gland (3), and when screwing lead screw (2), spool (5) can be synchronous with shut-in well blob of viscose (7)
Centerline direction along shell (17) is mobile.
10. the double envelope blowout preventers of oil pumping machine well head according to claim 8, which is characterized in that shell (17) and housing (11)
It is fixedly connected, is arranged between spool (5) and shell (17) the first sealing ring (6), led between spool (5) and shut-in well blob of viscose (7)
Bolt (14) is crossed to be connected and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821136061.0U CN208830936U (en) | 2018-07-18 | 2018-07-18 | A kind of double envelope blowout preventers of oil pumping machine well head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821136061.0U CN208830936U (en) | 2018-07-18 | 2018-07-18 | A kind of double envelope blowout preventers of oil pumping machine well head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208830936U true CN208830936U (en) | 2019-05-07 |
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ID=66306690
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821136061.0U Active CN208830936U (en) | 2018-07-18 | 2018-07-18 | A kind of double envelope blowout preventers of oil pumping machine well head |
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| CN (1) | CN208830936U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647884A (en) * | 2021-01-07 | 2021-04-13 | 中国石油天然气股份有限公司 | Christmas tree wellhead sealing device |
-
2018
- 2018-07-18 CN CN201821136061.0U patent/CN208830936U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647884A (en) * | 2021-01-07 | 2021-04-13 | 中国石油天然气股份有限公司 | Christmas tree wellhead sealing device |
| CN112647884B (en) * | 2021-01-07 | 2023-04-25 | 中国石油天然气股份有限公司 | Wellhead sealing device for christmas tree |
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