CN202047774U - Oil extraction wellhead sealing device - Google Patents
Oil extraction wellhead sealing device Download PDFInfo
- Publication number
- CN202047774U CN202047774U CN2010206997478U CN201020699747U CN202047774U CN 202047774 U CN202047774 U CN 202047774U CN 2010206997478 U CN2010206997478 U CN 2010206997478U CN 201020699747 U CN201020699747 U CN 201020699747U CN 202047774 U CN202047774 U CN 202047774U
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- China
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- sealing device
- packing body
- wellhead sealing
- production wellhead
- retainer
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- Expired - Fee Related
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Abstract
The utility model discloses an oil extraction wellhead sealing device comprising an oil extraction wellhead sealing device shell body, a partition plate, a packing box shell body, an elastic packing body and a retainer. The packing box shell body is in a threaded connection with the oil extraction wellhead sealing device shell body provided with the partition plate; a cavity is formed between the packing box shell body and the oil extraction wellhead sealing device shell body; the column-shaped elastic packing body the with a circular hole for an oil pumping light pestle to pass through is arranged in the cavity, wherein the circular hole is arranged in the middle of the column-shaped elastic packing body; the tube-shaped retainer (10) is arranged on the excircle surface of the elastic packing body; the elastic packing body is formed by an inner elastic packing body (8) and an outer elastic packing body (9) through inside and outside overlapping; both the inner elastic packing body (8) and the outer elastic packing body (9) are provided with openings (14); and the openings (14) are staggered with each other in overlapping installation. The oil extraction wellhead sealing device has simple structure and low manufacture cost and is simple and convenient to operation, and the replacement of the elastic packing body in the inner cavity of oil extraction wellhead sealing device casing body is convenient and fast.
Description
Technical field
The utility model relates to the production wellhead corollary apparatus in the oil exploitation, and definite saying so seals the production wellhead sealing device of usefulness between a kind of production wellhead and the oil pumping polish rod.
Background technology
The sealing device that is used for the temporary sealing production wellhead at present, be that a four-way body is installed between packing box and production wellhead, the both sides of four-way body are separately installed with handwheel and leading screw, drive the leading screw rotation by rotating handwheel, promote to be installed in the rubber flashboard of four-way intracoelomic cavity, realization is to the temporary sealing of production wellhead, so that the packing box of four-way body top is carried out care and maintenance.
Above-mentioned production wellhead sealing device is complex structure not only, and is bulky, manufacturing cost height, and complex operation.Handwheel and leading screw are exposed to cause corrosion outside easily, brings the inconvenience of operation and maintenance maintenance.
The utility model content
It is a kind of simple in structure, cheap for manufacturing cost, easy and simple to handle that the technical problems to be solved in the utility model is to provide, and the elasticity packing body in the production wellhead sealing device inner chamber is changed production wellhead sealing device easily.
The problems referred to above of the present utility model are to solve by the sealer that following structure is provided, and this energy-saving sealer for mouth of pumped oil well comprises: production wellhead sealing device housing, dividing plate, packing box housing, elasticity packing body, retainer, locking pressure cap; For being threaded, form a cavity between the two between described packing box housing and the production wellhead sealing device housing that has dividing plate, columned elasticity packing body is installed in this cavity; There is the circular hole that passes through for oil pumping polish rod the centre of columned elasticity packing body; The periphery of described columned elasticity packing body is equipped with the retainer of tubulose.
The periphery of described elasticity packing body is coniform.
The two ends of the periphery of described elasticity packing body are coniform.
Described elasticity packing body is by interior packing body and overlapping the forming in outer packing inside and outside; Above-mentioned interior packing body and outer packing body are provided with opening, and its opening staggers mutually when overlapping installation.
The inner headed face of retainer one end of described tubulose is coniform.
The inner headed face at the retainer two ends of described tubulose is coniform.
The retainer of described tubulose is a helical spring.
Dividing plate on the retainer of described tubulose and the production wellhead sealing device housing is for fixedlying connected.
Described locking pressure cap and production wellhead sealing device housing are for being threaded; The locking pressure cap is arranged on the top of packing box body, is provided with sealing ring between the two.
Described locking pressure cap and production wellhead sealing device housing are for being threaded; The locking pressure cap is arranged on the below of packing box body, is provided with sealing ring between the two.
After adopting this spline structure, have simple in structurely, save great deal of steel, reduce manufacturing cost.Easy and simple to handle, and the elasticity packing body in the production wellhead sealing device inner chamber is changed convenient and swift.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model production wellhead sealing device is elaborated.
Fig. 1 is the sectional view of first kind of embodiment of the utility model production wellhead sealing device.
Fig. 2 is the sectional view along A-A line among Fig. 1.
Fig. 3 is the sectional view of second kind of embodiment of the utility model production wellhead sealing device.
Fig. 4 is the sectional view along B-B line among Fig. 3.
Fig. 5 is the sectional view of the third embodiment of the utility model production wellhead sealing device.
Fig. 6 is the sectional view along C-C line among Fig. 5.
Fig. 7 is the sectional view of the 4th kind of embodiment of the utility model production wellhead sealing device.
Fig. 8 is the sectional view along D-D line among Fig. 7.
Fig. 9 is the sectional view of the 5th kind of embodiment of the utility model production wellhead sealing device.
Figure 10 is the sectional view along E-E line among Fig. 9.
The specific embodiment
Illustrated in figures 1 and 2 is first kind of embodiment of the utility model production wellhead sealing device, by packing box housing 3 and packing body 4, interior pressure cap 1 with adjust the packing box that pressure cap 2 is formed, the centre has oil pumping polish rod 13 to pass through, when this packing box up and down reciprocatingly moves at oil pumping polish rod 13, play main sealing function.
The bottom of shown production wellhead sealing device housing 12 is provided with screw thread and is connected with production wellhead.
For being threaded, form a cavity between the two between shown packing box housing 3 and the production wellhead sealing device housing 12 that has dividing plate 11, columned elasticity packing body is installed in this cavity; There is the circular hole that passes through for oil pumping polish rod 13 centre of columned elasticity packing body.
Above-mentioned elasticity packing body is that its periphery is equipped with the retainer 10 of tubulose by interior packing body 8 and outer packing body 9 inside and outside overlapping forming.The retainer 10 of tubulose is used for keeping the work shape of elasticity packing body, guarantees efficient sealing effect.
Above-mentioned interior packing body 8 and outer packing body 9 all have opening 14, and its opening 14 staggers mutually when overlapping installation, guarantee efficient sealing effect.
The opening 14 of setting on interior packing body 8 and the outer packing body 9 mainly is convenient and swift in order to change.When needs are changed, old interior packing body 8 and outer packing body 9 opened from opening 14 pass oil pumping polish rod 13 and take out, new interior packing body 8 and outer packing body 9 are opened from opening 14 passed oil pumping polish rod 13 then, be installed in the retainer 10 and get final product.
Shown locking pressure cap 6 and production wellhead sealing device housing 12 are for being threaded; Locking pressure cap 6 is arranged on the top of packing box body 3, is provided with sealing ring 7 between the two; Shown locking pressure cap 6 is provided with positioner 5.
When packing box needs maintaining, at first unclamp positioner 5 and locking pressure cap 6, rotate packing box housing 3 then, elasticity packing body is pushed, and under the effect of retainer 10, elasticity packing body can not produce extension laterally, can only produce distortion to the inside, realize the effect of production wellhead sealing, do not leak, make things convenient for the carrying out of the maintaining work of packing box to guarantee the well liquid in the producing well.
When packing box maintaining end-of-job, rotate packing box housing 3, make elasticity packing body recover nature, tighten locking pressure cap 6 then, screwed in place device 5, the below of locking pressure cap 6 is provided with sealing ring 7.
Fig. 3 and shown in Figure 4 be second kind of embodiment of the utility model production wellhead sealing device, between shown packing box housing 3 and the production wellhead sealing device housing 12 that has dividing plate 11 for being threaded, form a cavity between the two, columned elasticity packing body is installed in this cavity; The circular hole that passes through for oil pumping polish rod 13 is arranged in the middle of the columned elasticity packing body.
Above-mentioned elasticity packing body is that its periphery is equipped with the retainer 10 of tubulose by interior packing body 8 and outer packing body 9 inside and outside overlapping forming.The retainer 10 of tubulose is used for keeping the work shape of elasticity packing body, guarantees efficient sealing effect.
Above-mentioned interior packing body 8 and outer packing body 9 all have opening 14, and its opening 14 staggers mutually when overlapping installation, guarantee efficient sealing effect.
The retainer 10 of shown tubulose, the inner headed face at its two ends is coniform; One end face of shown interior packing body 8 is coniformly to match with the cone shape inner headed face of an end of retainer 10, and an end face of outer packing body 9 is that the cone shape inner headed face of the coniform other end with retainer 10 matches.
When packing box needs maintaining, at first unclamp positioner 5 and locking pressure cap 6, rotate packing box housing 3 then, elasticity packing body is pushed, and under the effect of retainer 10, elasticity packing body can not produce extension laterally, can only produce distortion to the inside, realize the effect of production wellhead sealing, do not leak, make things convenient for the carrying out of the maintaining work of packing box to guarantee the well liquid in the producing well.
When packing box maintaining end-of-job, rotate packing box housing 3, make elasticity packing body recover nature, tighten locking pressure cap 6 then, screwed in place device 5, the below of locking pressure cap 6 is provided with sealing ring 7.
Fig. 5 and shown in Figure 6 be the third embodiment of the utility model production wellhead sealing device, between shown packing box housing 3 and the production wellhead sealing device housing 12 that has dividing plate 11 for being threaded, form a cavity between the two, columned elasticity packing body is installed in this cavity; The circular hole that passes through for oil pumping polish rod 13 is arranged in the middle of the columned elasticity packing body.
Above-mentioned elasticity packing body is that its periphery is equipped with the retainer 10 of tubulose by interior packing body 8 and outer packing body 9 inside and outside overlapping forming.The retainer 10 of tubulose is used for keeping the work shape of elasticity packing body, guarantees efficient sealing effect.
Above-mentioned interior packing body 8 and outer packing body 9 all have opening 14, and its opening 14 staggers mutually when overlapping installation, guarantee efficient sealing effect.
The periphery of shown outer packing body 9 is a taper seat, cooperatively interacts with the cone shape inner headed face of retainer 10.
When packing box needs maintaining, at first unclamp positioner 5, rotate packing box housing 3 then, elasticity packing body is pushed, and under the effect of retainer 10, elasticity packing body can not produce extension laterally, can only produce distortion to the inside, realize the effect of production wellhead sealing, do not leak, make things convenient for the carrying out of the maintaining work of packing box to guarantee the well liquid in the producing well.
When packing box maintaining end-of-job, rotate packing box housing 3, make elasticity packing body recover nature, the screwed in place device 5 then.
Fig. 7 and shown in Figure 8 be the 4th kind of embodiment of the utility model production wellhead sealing device, between shown packing box housing 3 and the production wellhead sealing device housing 12 that has dividing plate 11 for being threaded, form a cavity between the two, columned elasticity packing body is installed in this cavity; The circular hole that passes through for oil pumping polish rod 13 is arranged in the middle of the columned elasticity packing body.
Above-mentioned elasticity packing body is that its periphery is equipped with the retainer 10 of tubulose by interior packing body 8 and outer packing body 9 inside and outside overlapping forming.The retainer 10 of tubulose is used for keeping the work shape of elasticity packing body, guarantees efficient sealing effect.
Above-mentioned interior packing body 8 and outer packing body 9 all have opening 14, and its opening 14 staggers mutually when overlapping installation, guarantee efficient sealing effect.
The periphery of shown outer packing body 9 is a taper seat, cooperatively interacts with the cone shape inner headed face of retainer 10.
When packing box needs maintaining, at first unclamp positioner 5, rotate packing box housing 3 then, elasticity packing body is pushed, and under the effect of retainer 10, elasticity packing body can not produce extension laterally, can only produce distortion to the inside, realize the effect of production wellhead sealing, do not leak, make things convenient for the carrying out of the maintaining work of packing box to guarantee the well liquid in the producing well.
When packing box maintaining end-of-job, rotate packing box housing 3, make elasticity packing body recover nature, the screwed in place device 5 then.
Fig. 9 and shown in Figure 10 be the 5th kind of embodiment of the utility model production wellhead sealing device, between shown packing box housing 3 and the production wellhead sealing device housing 12 that has dividing plate 11 for being threaded, form a cavity between the two, cylindric elasticity packing body is installed in this cavity; The circular hole that passes through for oil pumping polish rod 13 is arranged in the middle of the cylindric elasticity packing body.
Above-mentioned elasticity packing body is that its periphery is equipped with the retainer 10 of tubulose by interior packing body 8 and outer packing body 9 inside and outside overlapping forming.The retainer 10 of tubulose is used for keeping the work shape of elasticity packing body, guarantees efficient sealing effect.
Above-mentioned interior packing body 8 and outer packing body 9 all have opening 14, and its opening 14 staggers mutually when overlapping installation, guarantee efficient sealing effect.
Shown retainer 10 is a helical spring, is installed in the periphery of elasticity packing body
Shown locking pressure cap 6 and production wellhead sealing device housing 12 are for being threaded; Locking pressure cap 6 is arranged on the below of packing box body 3, is provided with sealing ring 7 between the two; Shown locking pressure cap 6 is provided with positioner 5.
When packing box needs maintaining, at first unclamp positioner 5, rotate packing box housing 3 then, elasticity packing body is pushed, and under the effect of retainer 10, elasticity packing body can not produce extension laterally, can only produce distortion to the inside, realize the effect of production wellhead sealing, do not leak, make things convenient for the carrying out of the maintaining work of packing box to guarantee the well liquid in the producing well.
When packing box maintaining end-of-job, rotate packing box housing 3, make elasticity packing body recover nature, the screwed in place device 5 then.
Claims (10)
1. the production wellhead sealing device comprises: production wellhead sealing device housing, dividing plate, packing box housing, elasticity packing body, retainer, locking pressure cap, positioner; For being threaded, form a cavity between the two between described packing box housing (3) and the production wellhead sealing device housing (12) that has dividing plate (11), columned elasticity packing body is installed in this cavity; There is the circular hole that passes through for oil pumping polish rod (13) centre of columned elasticity packing body; It is characterized in that: the periphery of described columned elasticity packing body is equipped with the retainer (10) of tubulose.
2. production wellhead sealing device according to claim 1 is characterized in that: the periphery of described elasticity packing body is coniform.
3. production wellhead sealing device according to claim 1 is characterized in that: the two ends of the periphery of described elasticity packing body are coniform.
4. according to each described production wellhead sealing device in the claim 1 to 3, it is characterized in that: described elasticity packing body is by interior packing body (8) and inside and outside overlapping the forming of outer packing body (9); Above-mentioned interior packing body (8) and outer packing body (9) are provided with opening (14), and its opening (14) staggers mutually when overlapping installation.
5. production wellhead sealing device according to claim 1 is characterized in that: the inner headed face of retainer (10) one ends of described tubulose is coniform.
6. production wellhead sealing device according to claim 1 is characterized in that: the inner headed face at the retainer of described tubulose (10) two ends is coniform.
7. production wellhead sealing device according to claim 1 is characterized in that: the retainer of described tubulose (10) is a helical spring.
8. production wellhead sealing device according to claim 1 and 2 is characterized in that: the dividing plate (11) on the retainer of described tubulose (10) and the production wellhead sealing device housing (12) is for fixedlying connected.
9. production wellhead sealing device according to claim 1 is characterized in that: described locking pressure cap (6) and production wellhead sealing device housing (12) are for being threaded; Locking pressure cap (6) is arranged on the top of packing box body (3), is provided with sealing ring (7) between the two, and described locking pressure cap (6) is provided with positioner (5).
10. production wellhead sealing device according to claim 1 is characterized in that: described locking pressure cap (6) and production wellhead sealing device housing (12) are for being threaded; Locking pressure cap (6) is arranged on the below of packing box body (3), is provided with sealing ring (7) between the two; Described locking pressure cap (6) is provided with positioner (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206997478U CN202047774U (en) | 2010-12-30 | 2010-12-30 | Oil extraction wellhead sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206997478U CN202047774U (en) | 2010-12-30 | 2010-12-30 | Oil extraction wellhead sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202047774U true CN202047774U (en) | 2011-11-23 |
Family
ID=44988085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206997478U Expired - Fee Related CN202047774U (en) | 2010-12-30 | 2010-12-30 | Oil extraction wellhead sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202047774U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016004797A1 (en) * | 2014-07-10 | 2016-01-14 | 刘玉玺 | Oil-pumping polished rod motion-following sealer |
-
2010
- 2010-12-30 CN CN2010206997478U patent/CN202047774U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016004797A1 (en) * | 2014-07-10 | 2016-01-14 | 刘玉玺 | Oil-pumping polished rod motion-following sealer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20121230 |