CN204200151U - A kind of oil extraction wellhead sealing device - Google Patents

A kind of oil extraction wellhead sealing device Download PDF

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Publication number
CN204200151U
CN204200151U CN201420642756.1U CN201420642756U CN204200151U CN 204200151 U CN204200151 U CN 204200151U CN 201420642756 U CN201420642756 U CN 201420642756U CN 204200151 U CN204200151 U CN 204200151U
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CN
China
Prior art keywords
lip
sealing
sleeve
cover
main body
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.)
Expired - Fee Related
Application number
CN201420642756.1U
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Chinese (zh)
Inventor
王秀兰
杜建省
王海莉
罗涛
李雪梅
刘晓燕
焦方勇
Original Assignee
焦方勇
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Filing date
Publication date
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Priority to CN201420642756.1U priority Critical patent/CN204200151U/en
Application granted granted Critical
Publication of CN204200151U publication Critical patent/CN204200151U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a kind of oil extraction wellhead sealing device, it is characterized in that: comprise polished rod, spheric seat, main body, sealing mechanism, sleeve, polished rod is fixed on spheric seat, sealing mechanism is provided with between polished rod and sleeve, sealing mechanism comprises seal cover, lip cover, lip has put sealing lip, the angle of sealing lip and vertical direction is 30-45 °, sealing lip is provided with pack port, auxiliary sealing structure is provided with near sealing lip, the shape of pack port and the corner of auxiliary sealing structure match, it is 2: 1 that lip cover external diameter overlaps external diameter ratio with lip, the circular arc portion of spheric seat and the cone match of main body, the lower end socket main body of sleeve, seal cover is arranged at lip and puts, the upper surface of seal cover is provided with flange, flange and sleeve are bolted.The beneficial effects of the utility model are: structure is simple, and easy to maintenance, processing cost is low, production efficiency is high.

Description

A kind of oil extraction wellhead sealing device
Technical field
The utility model belongs to petroleum well mechanical field, especially relates to a kind of oil extraction wellhead sealing device.
Background technology
At present for the sealing device of temporary sealing production wellhead,, between packing box and production wellhead, four entire bodies are installed, the both sides of four entire bodies are separately installed with handwheel and leading screw, leading screw is driven to rotate by rotating handwheel, promote the rubber flashboard being arranged on four-way intracoelomic cavity, realize the temporary sealing to production wellhead, to carry out care and maintenance to the packing box above four entire bodies.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of oil extraction wellhead sealing device, be especially applicable to low cost, easy and simple to handle, and the elasticity packing body in oil extraction wellhead sealing device inner chamber changes oil extraction wellhead sealing device easily.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: comprise polished rod, spheric seat, main body, sealing mechanism, sleeve, described polished rod is fixed on described spheric seat, described sealing mechanism is provided with between described polished rod and described sleeve, described sealing mechanism comprises seal cover, lip cover, described lip has put sealing lip, the angle of described sealing lip and vertical direction is 30-45 °, described sealing lip is provided with pack port, auxiliary sealing structure is provided with near described sealing lip, the shape of described pack port and the corner of described auxiliary sealing structure match, it is 2: 1 that described lip cover external diameter overlaps external diameter ratio with described lip, described seal cover is arranged at described lip and puts, the upper surface of described seal cover is provided with flange, described flange and described sleeve are bolted, the circular arc portion of described spheric seat and the cone match of described main body, the lower end of described sleeve is socketed described main body.
Described lip cover is taper.
The shape of described auxiliary sealing structure is L-type, and minor face one end of described L-type auxiliary sealing structure is fixedly connected with described sealing shroud, and the one end on long limit is positioned near described pack port.
Described sealing lip comprises the first sealing lip, the second sealing lip, and described first sealing lip and described second sealing lip are about horizontal direction symmetry.
The utility model has beneficial effect: the collocation of seal cover, lip cover uses good airproof performance, be convenient to more easily change operation, reduce wear, simultaneously convenient with other devices with the use of, by adopting spheric seat to match with main body, the bottom of spheric seat connects well head production tree, and the end face of spheric seat is spherical can combination with the conical surface of main body preferably, decrease the eccentric wear problem of polished rod and sealing ring, decrease the replacing of packing; Can effectively prevent medium from revealing by auxiliary sealing structure with coordinating of pack port, the structure design of auxiliary sealing structure and pack port makes can play sealing function when pressure medium is less, and not fold, entirety is multi-lip seal, in use can be used for anticorrosion medium, long service life, anti-leak result is very good, ensure that the normal operation of equipment.
Accompanying drawing explanation
Fig. 1 is structural scheme of mechanism of the present utility model
In figure:
1, polished rod 2, spheric seat 3, main body
4, lip cover 5, flange 6, seal cover
7, sleeve
Detailed description of the invention
Below by specific embodiment, the technical solution of the utility model is further described.
Specific embodiment 1
A kind of oil extraction wellhead sealing device, comprise polished rod 1, spheric seat 2, main body 3, sealing mechanism, sleeve 7, polished rod 1 is fixed on spheric seat 2, described sealing mechanism is provided with between polished rod 1 and sleeve 7, described sealing mechanism comprises seal cover 6, lip cover 4, lip cover 4 there is sealing lip, the angle of described sealing lip and vertical direction is 30-45 °, described sealing lip is provided with pack port, auxiliary sealing structure is provided with near described sealing lip, the shape of described pack port and the corner of described auxiliary sealing structure match, lip overlaps 4 external diameters, and to overlap 4 external diameter ratios with lip be 2: 1, the circular arc portion of spheric seat 2 and the cone match of main body 3, the lower end socket main body 3 of sleeve 7, seal cover 6 is arranged on lip cover 4, the upper surface of seal cover 6 is provided with flange 5, flange 5 and sleeve 7 are bolted.
Specific embodiment 2
A kind of oil extraction wellhead sealing device, comprise polished rod 1, spheric seat 2, main body 3, sealing mechanism, sleeve 7, polished rod 1 is fixed on spheric seat 2, described sealing mechanism is provided with between polished rod 1 and sleeve 7, described sealing mechanism comprises seal cover 6, lip cover 4, lip cover 4 is taper, lip cover 4 there is sealing lip, the angle of described sealing lip and vertical direction is 30-45 °, described sealing lip is provided with pack port, auxiliary sealing structure is provided with near described sealing lip, the shape of described pack port and the corner of described auxiliary sealing structure match, lip overlaps 4 external diameters, and to overlap 4 external diameter ratios with lip be 2: 1, the circular arc portion of spheric seat 2 and the cone match of main body 3, the lower end socket main body 3 of sleeve 7, seal cover 6 is arranged on lip cover 4, the upper surface of seal cover 6 is provided with flange 5, flange 5 and sleeve 7 are bolted.
The shape of described auxiliary sealing structure is L-type, and minor face one end of described L-type auxiliary sealing structure is fixedly connected with described sealing shroud, and the one end on long limit is positioned near described pack port.
Specific embodiment 2
A kind of oil extraction wellhead sealing device, comprise polished rod 1, spheric seat 2, main body 3, sealing mechanism, sleeve 7, polished rod 1 is fixed on spheric seat 2, described sealing mechanism is provided with between polished rod 1 and sleeve 7, described sealing mechanism comprises seal cover 6, lip cover 4, lip cover 4 is taper, lip cover 4 there is sealing lip, the angle of described sealing lip and vertical direction is 30-45 °, described sealing lip is provided with pack port, auxiliary sealing structure is provided with near described sealing lip, the shape of described pack port and the corner of described auxiliary sealing structure match, lip overlaps 4 external diameters, and to overlap 4 external diameter ratios with lip be 2: 1, the circular arc portion of spheric seat 2 and the cone match of main body 3, the lower end socket main body 3 of sleeve 7, seal cover 6 is arranged on lip cover 4, the upper surface of seal cover 6 is provided with flange 5, flange 5 and sleeve 7 are bolted.
The shape of described auxiliary sealing structure is L-type, and minor face one end of described L-type auxiliary sealing structure is fixedly connected with described sealing shroud, and the one end on long limit is positioned near described pack port.
Described sealing lip comprises the first sealing lip, the second sealing lip, and described first sealing lip and described second sealing lip are about horizontal direction symmetry.
The course of work of this example: during use, spheric seat 2 matches with main 3, and the bottom of spheric seat 2 connects well head production tree, and the end face of spheric seat 2 is spherical can combination with the conical surface of main body 3 preferably.Minimizing polished rod 1 and lip overlap the eccentric wear problem of 4, decrease the replacing of packing, are convenient to sucker rod and change operation, reduce wear.When seal cover 6 is tightened, polished rod 1 moves downward, and makes to overlap 4 with lip and fits tightly, reach the effect of sealing.
Above an embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.

Claims (4)

1. an oil extraction wellhead sealing device, it is characterized in that: comprise polished rod, spheric seat, main body, sealing mechanism, sleeve, described polished rod is fixed on described spheric seat, described sealing mechanism is provided with between described polished rod and described sleeve, described sealing mechanism comprises seal cover, lip cover, described lip has put sealing lip, the angle of described sealing lip and vertical direction is 30-45 °, described sealing lip is provided with pack port, auxiliary sealing structure is provided with near described sealing lip, the shape of described pack port and the corner of described auxiliary sealing structure match, it is 2: 1 that described lip cover external diameter overlaps external diameter ratio with described lip, described seal cover is arranged at described lip and puts, the upper surface of described seal cover is provided with flange, described flange and described sleeve are bolted, the circular arc portion of described spheric seat and the cone match of described main body, the lower end of described sleeve is socketed described main body.
2. oil extraction wellhead sealing device according to claim 1, is characterized in that: described lip cover is taper.
3. oil extraction wellhead sealing device according to claim 1, is characterized in that: the shape of described auxiliary sealing structure is L-type, and minor face one end of described L-type auxiliary sealing structure is fixedly connected with described sealing shroud, and the one end on long limit is positioned near described pack port.
4. oil extraction wellhead sealing device according to claim 1, is characterized in that: described sealing lip comprises the first sealing lip, the second sealing lip, and described first sealing lip and described second sealing lip are about horizontal direction symmetry.
CN201420642756.1U 2014-10-24 2014-10-24 A kind of oil extraction wellhead sealing device Expired - Fee Related CN204200151U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420642756.1U CN204200151U (en) 2014-10-24 2014-10-24 A kind of oil extraction wellhead sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420642756.1U CN204200151U (en) 2014-10-24 2014-10-24 A kind of oil extraction wellhead sealing device

Publications (1)

Publication Number Publication Date
CN204200151U true CN204200151U (en) 2015-03-11

Family

ID=52658119

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420642756.1U Expired - Fee Related CN204200151U (en) 2014-10-24 2014-10-24 A kind of oil extraction wellhead sealing device

Country Status (1)

Country Link
CN (1) CN204200151U (en)

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150311

Termination date: 20151024

EXPY Termination of patent right or utility model