CN2677599Y - Automatic regulation wellhead sealing device - Google Patents
Automatic regulation wellhead sealing device Download PDFInfo
- Publication number
- CN2677599Y CN2677599Y CN 200320121524 CN200320121524U CN2677599Y CN 2677599 Y CN2677599 Y CN 2677599Y CN 200320121524 CN200320121524 CN 200320121524 CN 200320121524 U CN200320121524 U CN 200320121524U CN 2677599 Y CN2677599 Y CN 2677599Y
- Authority
- CN
- China
- Prior art keywords
- sealing device
- top connection
- packing
- lower contact
- well mouth
- 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
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- Pressure Vessels And Lids Thereof (AREA)
Abstract
The utility model discloses an automatic regulation wellhead sealing device which comprises an upper joint, a press cap, a packing, a casing ring and a spring which are arranged in the inner cavity of the upper joint and at the lower end of the packing. The lower part of the upper joint is connected with a lower joint. The upper part of the lower joint is provided with the upper joint by a bolt. The utility model generates the upward thrust because of the arrangement of the spring. The packing is always in the compressed state to make the automatic regulation wellhead sealing device be more reliably sealed. The automatic regulation wellhead sealing device can be widely used for the oil pumping wellhead apparatus of the petroleum production.
Description
One, technical field
The utility model relates to the oil exploitation well mouth sealing device, particularly a kind of automatic adjustable type well mouth sealing device.
Two, background technology
At present, sealing device commonly used on oil well has mechanically-sealing apparatus and packing_seal device, though mechanically-sealing apparatus seals reliable, but working environment is required high, cost is also high, and the packing_seal apparatus structure is simple, processing and manufacturing is easy, cost is low, installation and maintenance, the replacing parts are convenient, therefore use more extensive, but also exist life cycle short, easily take place to leak and cause problem of environmental pollution, be enhanced leaktightness, just need adjust pressure cap and replacing packing continually, more than very the person will adjust or change for several times in one day, both increase expending of financial resources, increased labour intensity again, also influenced oil well production sometimes.
Three, summary of the invention
The technical problems to be solved in the utility model provides a kind of improved automatic adjustable type well mouth sealing device, it can overcome or avoid above-mentioned problems of the prior art effectively, improves sealing performance effectively, prolongs life cycle, reduce maintenance frequency and maintenance load, reduce cost.
Automatic adjustable type well mouth sealing device described in the utility model, comprise top connection, pressure cap, packing, also comprise the collar and the spring installed in top connection inner chamber, packing lower end, the lower contact that the top connection bottom connects, described lower contact top is located with top connection mutually by bolt.
Wherein, described top connection middle part outer wall is provided with vertical groove, is located mutually with lower contact by bolt in this groove.
Wherein, described upper and lower joint center is equipped with the central through hole by polished rod.
Wherein, the lower end connecting portion of described lower contact is clamping hoop type, screw-type or flange form or similar structures.
Wherein, described top connection and top, lower contact junction are installed on seal.
The utility model has following advantage compared with prior art:
1, because the setting of spring produces upwards thrust, makes packing be in compressive state all the time, make sealing more reliable;
2, reduce adjustment pressure cap, packing number of times, alleviated workload;
3, adopt seal, make the junction sealing reliable, avoid seepage;
4, regulate, change packing conveniently, particularly change packing, can eject desiring to change packing in the chamber, needn't be on the waiting list out the instrument of packing in addition by spring force;
5, reasonable in design, simple in structure, be easy to processing, installation and maintenance.
Four, description of drawings
Accompanying drawing is a structural representation of the present utility model.
Five, the specific embodiment
Referring to accompanying drawing, a kind of automatic adjustable type well mouth sealing device comprises top connection 3, pressure cap 1, packing 2, also comprises the collar 5 and the spring 7 installed in top connection 3 inner chambers, packing 2 lower ends, the lower contact 8 that top connection 3 bottoms connect, lower contact 8 tops are located with top connection 3 mutually by bolt 4.
Top connection 3 middle part outer walls are provided with vertical groove, and bolt 4 is located mutually with lower contact 8 in this groove.Top connection and lower contact center are provided with the central through hole by polished rod.The lower end connecting portion of lower contact 8 is clamping hoop type, screw-type, flange form or other similar structures (being expressed as clamping hoop type among the figure).Top connection 3 is installed on seal 6 with the top, junction of lower contact 8, leaks to prevent borehole fluid.Packing 2 is installed in the top connection 3 inner chamber collars 5 upper ends, and pressure cap 1 is installed in the top connection upper end, compresses packing, the sealing polished rod.
Claims (5)
1, a kind of automatic adjustable type well mouth sealing device, comprise top connection, pressure cap, packing, it is characterized in that also comprising the collar and the spring installed in top connection inner chamber, packing lower end, the lower contact that the top connection bottom connects, described lower contact top is located with top connection mutually by bolt.
2, automatic adjustable type well mouth sealing device according to claim 1 is characterized in that described top connection middle part outer wall is provided with vertical groove, is located with lower contact mutually by bolt in this groove.
3, automatic adjustable type well mouth sealing device according to claim 1 and 2 is characterized in that described upper and lower joint center is equipped with the central through hole by polished rod.
4, automatic adjustable type well mouth sealing device according to claim 1 and 2, the bottom that it is characterized in that described lower contact is clamping hoop type, screw-type or flange-type structure.
5, require 1 or 2 described automatic adjustable type well mouth sealing devices, it is characterized in that the top, junction of described top connection and lower contact is installed on seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320121524 CN2677599Y (en) | 2003-12-29 | 2003-12-29 | Automatic regulation wellhead sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320121524 CN2677599Y (en) | 2003-12-29 | 2003-12-29 | Automatic regulation wellhead sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2677599Y true CN2677599Y (en) | 2005-02-09 |
Family
ID=34581136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320121524 Expired - Fee Related CN2677599Y (en) | 2003-12-29 | 2003-12-29 | Automatic regulation wellhead sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2677599Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612620A (en) * | 2015-02-10 | 2015-05-13 | 大庆因你美丽机械设备制造有限公司 | Pumping unit polish rod mechanical sealing device |
| CN104632120A (en) * | 2014-12-11 | 2015-05-20 | 中国石油天然气股份有限公司 | Elastic glan |
| CN113719251A (en) * | 2021-08-20 | 2021-11-30 | 淮安市井神钻采机具有限公司 | Combined wellhead packing box |
-
2003
- 2003-12-29 CN CN 200320121524 patent/CN2677599Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632120A (en) * | 2014-12-11 | 2015-05-20 | 中国石油天然气股份有限公司 | Elastic glan |
| CN104612620A (en) * | 2015-02-10 | 2015-05-13 | 大庆因你美丽机械设备制造有限公司 | Pumping unit polish rod mechanical sealing device |
| CN104612620B (en) * | 2015-02-10 | 2016-03-09 | 大庆因你美丽机械设备制造有限公司 | Oil-extractor polish-rod mechanically-sealing apparatus |
| CN113719251A (en) * | 2021-08-20 | 2021-11-30 | 淮安市井神钻采机具有限公司 | Combined wellhead packing box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |