CN2732987Y - Wellhead sealer for pumping well - Google Patents
Wellhead sealer for pumping well Download PDFInfo
- Publication number
- CN2732987Y CN2732987Y CN 200420076987 CN200420076987U CN2732987Y CN 2732987 Y CN2732987 Y CN 2732987Y CN 200420076987 CN200420076987 CN 200420076987 CN 200420076987 U CN200420076987 U CN 200420076987U CN 2732987 Y CN2732987 Y CN 2732987Y
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- China
- Prior art keywords
- seal valve
- packing
- spring
- steel ball
- valve
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- Expired - Fee Related
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Abstract
The utility model relates to a wellhead sealer for pumping well, which belongs to the field of the matching apparatus of the pumping unit for the oil field. The wellhead sealer for pumping well is composed of a working seal valve and a spare seal valve, wherein the spare seal valve is horizontally placed, and the working seal valve through a ball seat and a pressing cap is in a reversed T shape and is put above the spare seal valve. When the sealer works normally, the spare seal valve doesn't work. A polish rod is sealed by the working seal valve. Because a packing in the working seal valve is conical and the packing is provided with the continuous downward pressure of a spring, the packing can be automatically compensated after the packing is abraded. When the packing is going to be added, the spare seal valve is adjusted to the seal position to seal the polish rod. The working seal valve can be opened to replace the packing. The wellhead sealer for pumping well solves the problems of the packing that is caused to be elliptical having no seal action because of adopting the pressure compensation in the radial direction and the polish rod having to stop work while replacing the packing of the existing seal valve. The wellhead sealer for pumping well has the characteristics of the automatic deflection adjustment, the automatic compensation and the continuous pumping addition of the packing. The using effect is enhanced by more than four times. The wellhead sealer for pumping well is suitable for the wellhead seal of the pumping well of each oil field.
Description
Affiliated technical field:
The utility model relates to a kind of pumpingh well wellhead sealing device, and particularly a kind of pumpingh well polished rod and packing of making produces the pumpingh well wellhead sealing device that can compensate automatically behind the gap, belongs to pumping unit corollary apparatus field, oil field.
Background technology:
The employed pumping unit of oilfield is to drive polished rod with underground crude oil suction oil pipeline by oil pumper, unavoidably makes crude oil ejection well head but polished rod produces pressure in putting forward the process of stretching, and makes the crude resources waste, and cause the pollution around the oil well.The way that the oil field addresses this problem, generally all be adopt several rubber seal are cut off after, sheared edge is staggered, compress behind the packing box of packing into and realize sealing polished rod.The shortcoming of this kind way is: 1. after the sealing structure is used a period of time, lose sealing function after producing certain clearance between ring wear and the polished rod, make that the packing in the packing box is changed frequent.2. polished rod must quit work when changing packing, and crude oil leakage in order to prevent to change also need be installed the rubber gate, both takes a lot of work, and is time-consuming again.3. do not have deviation correcting device on traditional packing box, polished rod causes the well head draining after producing eccentric wear equally.In order to overcome the defective of above-mentioned way, people have designed and can make the packing wearing and tearing back wellhead polish rod sealing device of compensation automatically, but because the pressure of compensation is to exert pressure in a part of position of polished rod warp direction automatically, and make packing wearing and tearing post-compensation form ellipse and jagged edge, polished rod can not well be sealed, do not reach the purpose that well head is sealed fully and draining do not occur, and polished rod to quit work still when changing packing.
Summary of the invention:
The purpose of this utility model is: provide a kind of employing working seal valve to become " ⊥ " shape to be flexibly connected by steel ball with the backup seal valve, the working seal valve compensates automatically in the wearing and tearing to packing of the axial direction of polished rod, thoroughly solved the working seal valve warp direction automatically compensation make packing form the oval problem that produces leakage of oil.Adopt the backup seal valve to replace the rubber gate, polished rod does not quit work when changing packing, and has the pumpingh well wellhead sealing device of twin-stage tuningout function.
The utility model is to realize above-mentioned purpose by following technical solution:
This pumpingh well wellhead sealing device is made of working seal valve and backup seal valve two parts, backup seal valve horizontal positioned, and the working seal valve is " ⊥ " shape by ball seat and pressure cap and places backup seal valve top; The backup seal valve is made up of valve body, attachment screw, piston, spring, spring capping, end cap, adjusting rod, little plug and special-shaped packing; The working seal valve is made up of band cover steel ball, packing, spring, regulating sleeve, spring capping and fine setting pressure cap; Special-shaped packing is equipped with at middle part in the valve body of backup seal valve, the both sides of special-shaped packing are equipped with in piston, the piston by attachment screw and are fixed with spring by spring capping, sealing ring is housed on the outer surface of piston, and two ends of valve body is equipped with end cap, and adjusting rod and little plug are housed on the end cap; There is an adpting flange at the outer following middle part of the valve body of backup seal valve, is fixed with a tuningout connector by lock nut on the adpting flange, and adpting flange is equipped with sealing ring with contacting of tuningout connector on the end face; It is characterized in that: the middle part of going up that the valve body of backup seal valve is outer is fixed with a ball seat, be fixed with a steel ball service depot by pressure cap on the ball seat, steel ball is equipped with packing in the service depot, spring and spring capping are housed on the packing, the outside of steel ball service depot is by the regulating sleeve that has been threaded, and the regulating sleeve top is fixed with a supporting positive cover that links to each other with spring capping by the fine setting pressure cap.The first half that is shaped as in the hole, chamber of steel ball service depot is a cylinder, and Lower Half is the rounding platform.Between the steel ball end face of steel ball service depot and the ball seat storage room is arranged.
The utility model compared with prior art has following beneficial effect:
1. working seal valve and backup seal valve are one " ⊥ " shape integral body, both solved the existing well sealer for mouth when the warp direction of polished rod compensates automatically, packing easily forms ellipse and the problem of leakage of oil, adopt the backup seal valve to substitute the rubber gate again, and reach the not out-of-work purpose of polished rod when changing packing.
2. the connection between working seal valve and the backup seal valve adopts ball seat to be connected with the steel ball service depot, make tuningout automatic fully, and the tuningout surplus is big, has solved the problem of polished rod eccentric wear fully.
3. the working seal valve adopts on 360 ° of circumference of axial direction of polished rod and carries out automatic wear compensation with the spring pressurization, has thoroughly solved the problem of existing well sealer for mouth leakage of oil.
Description of drawings:
Accompanying drawing is the structural representation of pumpingh well wellhead sealing device.
Among the figure: 1. finely tune pressure cap, 2. spring capping, 3. regulating sleeve, 4. spring, 5. packing, 6. steel ball service depot, 7. pressure cap, 8. ball seat, 9. special-shaped packing, 10. piston, 11. attachment screws, 12. valve bodies, 13. little plug, 14. adjusting rods, 15. end caps, 16. springs, 17. spring capping, 18. sealing rings, 19. adpting flanges, 20. sealing rings, 21. the tuningout connector, 22. lock nuts, 23. supporting positive covers, 24. storage rooms.
The specific embodiment:
This pumpingh well wellhead sealing device is made of working seal valve and backup seal valve two parts, and the working seal valve flexibly connects become " ⊥ " shape by ball seat (8) with pressure cap (7) with the backup seal valve.The working seal valve is made of steel ball service depot (6), packing (5), spring (4), regulating sleeve (3), spring capping (2) and fine setting pressure cap (1).Packing (5) is contained in the hole, chamber of steel ball service depot (6), spring (4) places on the packing (5), by screw thread regulating sleeve (3) is housed on steel ball service depot (6) external surface, regulating sleeve (3) top is fixed with a supporting positive cover (23) that is connected with spring capping (2) by fine setting pressure cap (1).The backup seal valve is made of valve body (12), special-shaped packing (9), piston (10), attachment screw (11), spring (16), spring capping (17), sealing ring (18), end cap (15), adjusting rod (14) and little plug (13).Special-shaped packing (9) is contained in the middle part in the valve body (12), and piston (10) is equipped with by attachment screw (11) in the both sides of special-shaped packing (9), and piston (10) is gone up and is fixed with spring (16) by spring capping (17); The end cap (15) that band adjusting rod (14) is equipped with at the two ends of valve body (12) is equipped with little plug (13) on the end cap (15).During sealing device operate as normal, the special-shaped packing (9) in the backup seal valve does not contact with polished rod, does not seal, and by the packing (5) in the hole, chamber of the steel ball service depot (6) of working seal valve polished rod is sealed.When wearing and tearing in the process that moves up and down of packing (5) at polished rod, the spring (4) on its packing (5) top has a continuous downward pressure to packing (5), because the indoor hole shape of steel ball service depot (6) is that the first half is a cylinder, Lower Half is the rounding platform, the external surface shape of packing (5) is identical with the indoor hole of steel ball service depot (6), therefore packing (5) hole, chamber by the cone-shaped in the steel ball service depot (6) under the pressure of spring (4) is pushed, make the endoporus and the polished rod of packing (5) be close together, and obtain good sealing effectiveness, and can partly be compensated automatically at the rounding platform in the indoor hole of steel ball service depot (6) after packing (5) wearing and tearing.The pressure of spring (4) can be by being adjusted to required pressure with the regulating sleeve (3) that is threaded in steel ball service depot (6) external surface.The dregs that packing (5) wears away enter in the storage room (24) and store, and clear up during overhaul.In order to make the sealing device can reach the purpose of automatic deflection adjusting, except that tuningout connector (21), adopt ball seat (8) and pressure cap (7) that the steel ball piecemeal activity of steel ball service depot (6) is fixed between working seal valve and the backup seal valve, and form a universal joint, can in 360 °, carry out tuningout arbitrarily, and the surplus of tuningout is bigger.
When the packing (5) in the working seal valve of sealing device needs to add, open the little plug (13) of backup seal valve, adjusting rod (14) on the end cap (15) at adjusting backup seal valve body (12) two ends, make it pass through spring capping (17), spring (16) and piston (10) and the endoporus of special-shaped packing (9) is adjacent to the polished rod surface makes polished rod obtain sealing, the pressure of spring (16) can compensate after by piston (10) special-shaped packing (9) being worn and torn automatically.Again the regulating sleeve on the working seal valve (3) is unloaded from steel ball service depot (6), can add packing (5) in the indoor hole of steel ball service depot (6), then regulating sleeve (3) is tightened in the steel ball service depot (6), and regulate the pressure of spring (4), again the adjusting rod (14) at backup seal valve body (12) two ends is transferred pine, special-shaped packing (9) and polished rod are left, the stifled little plug (13) of, then the working seal valve begins operate as normal.Like this, the backup seal valve has just replaced the rubber valve, and make to change or when adding the packing (5) in the indoor hole, steel ball service depot (6) on the working seal valve, polished rod does not need to quit work.
For the sealing device can normally be connected with production tree, lock nut (22) and tuningout connector (21) are housed on the adpting flange (19) below the valve body (12) of standby operating valve, be connected with production tree by tuningout connector (21).
Claims (3)
1. pumpingh well wellhead sealing device, it is made of working seal valve and backup seal valve two parts, backup seal valve horizontal positioned, the working seal valve is " " shape by ball seat and pressure cap and places backup seal valve top; The backup seal valve is made up of valve body, attachment screw, piston, spring, spring capping, end cap, adjusting rod, little plug and special-shaped packing; The working seal valve is made up of band cover steel ball, packing, spring, regulating sleeve, spring capping and fine setting pressure cap; Special-shaped packing is equipped with at middle part in the valve body of backup seal valve, the both sides of special-shaped packing are equipped with in piston, the piston by attachment screw and are fixed with spring by spring capping, sealing ring is housed on the outer surface of piston, and two ends of valve body is equipped with end cap, and adjusting rod and little plug are housed on the end cap; There is an adpting flange at the outer following middle part of the valve body of backup seal valve, is fixed with a tuningout connector by lock nut on the adpting flange, and adpting flange is equipped with sealing ring with contacting of tuningout connector on the end face; It is characterized in that; The middle part of going up that the valve body of backup seal valve is outer is fixed with a ball seat, be fixed with a steel ball service depot by pressure cap on the ball seat, steel ball is equipped with packing in the service depot, spring and spring capping are housed on the packing, the outside of steel ball service depot is by the regulating sleeve that has been threaded, and the regulating sleeve top is fixed with a supporting positive cover that links to each other with spring capping by the fine setting pressure cap.
2. pumpingh well wellhead sealing device according to claim 1 is characterized in that: the first half that is shaped as in the hole, chamber of steel ball service depot is a cylinder, and Lower Half is the rounding platform.
3. pumpingh well wellhead sealing device according to claim 1 is characterized in that: between the steel ball end face of steel ball service depot and the ball seat storage room is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420076987 CN2732987Y (en) | 2004-10-16 | 2004-10-16 | Wellhead sealer for pumping well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420076987 CN2732987Y (en) | 2004-10-16 | 2004-10-16 | Wellhead sealer for pumping well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2732987Y true CN2732987Y (en) | 2005-10-12 |
Family
ID=35068828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420076987 Expired - Fee Related CN2732987Y (en) | 2004-10-16 | 2004-10-16 | Wellhead sealer for pumping well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2732987Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100419207C (en) * | 2006-06-16 | 2008-09-17 | 青州市春晖科技发展有限公司 | Oil well head sealing device |
| CN101968337A (en) * | 2010-09-26 | 2011-02-09 | 浙江天马轴承股份有限公司 | Roundness measuring instrument of large precision bearing ring |
| CN104251125A (en) * | 2013-06-25 | 2014-12-31 | 荆州市高鑫石油阀件有限公司 | Universal follow-up bias adjusting polished rod sealing mechanism |
| CN106194096A (en) * | 2016-08-04 | 2016-12-07 | 中国石油大学(华东) | A kind of offshore platform has the compound wellhead assembly of bar oil recovery |
| CN107762439A (en) * | 2016-08-16 | 2018-03-06 | 中国石油天然气股份有限公司 | A kind of device for automatically generating sealing force |
| CN112502657A (en) * | 2020-11-16 | 2021-03-16 | 中国石油天然气股份有限公司 | Packing box, production tree equipment and oil production system |
| CN112727380A (en) * | 2019-10-14 | 2021-04-30 | 航天科工惯性技术有限公司 | Sealing centralizer for high-temperature wireless while-drilling system and high-temperature wireless while-drilling system |
-
2004
- 2004-10-16 CN CN 200420076987 patent/CN2732987Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100419207C (en) * | 2006-06-16 | 2008-09-17 | 青州市春晖科技发展有限公司 | Oil well head sealing device |
| CN101968337A (en) * | 2010-09-26 | 2011-02-09 | 浙江天马轴承股份有限公司 | Roundness measuring instrument of large precision bearing ring |
| CN104251125A (en) * | 2013-06-25 | 2014-12-31 | 荆州市高鑫石油阀件有限公司 | Universal follow-up bias adjusting polished rod sealing mechanism |
| CN106194096A (en) * | 2016-08-04 | 2016-12-07 | 中国石油大学(华东) | A kind of offshore platform has the compound wellhead assembly of bar oil recovery |
| CN107762439A (en) * | 2016-08-16 | 2018-03-06 | 中国石油天然气股份有限公司 | A kind of device for automatically generating sealing force |
| CN112727380A (en) * | 2019-10-14 | 2021-04-30 | 航天科工惯性技术有限公司 | Sealing centralizer for high-temperature wireless while-drilling system and high-temperature wireless while-drilling system |
| CN112502657A (en) * | 2020-11-16 | 2021-03-16 | 中国石油天然气股份有限公司 | Packing box, production tree equipment and oil production system |
| CN112502657B (en) * | 2020-11-16 | 2022-07-05 | 中国石油天然气股份有限公司 | Packing box, production tree equipment and oil production system |
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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 |