CN101956539A - Follow-up centering sealing device of pumping well head - Google Patents
Follow-up centering sealing device of pumping well head Download PDFInfo
- Publication number
- CN101956539A CN101956539A CN2009101814167A CN200910181416A CN101956539A CN 101956539 A CN101956539 A CN 101956539A CN 2009101814167 A CN2009101814167 A CN 2009101814167A CN 200910181416 A CN200910181416 A CN 200910181416A CN 101956539 A CN101956539 A CN 101956539A
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- Prior art keywords
- packing
- packing box
- center
- sealing device
- seat
- 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.)
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- 238000007789 sealing Methods 0.000 title claims abstract description 25
- 238000005086 pumping Methods 0.000 title claims abstract description 15
- 238000012856 packing Methods 0.000 claims abstract description 57
- 210000004907 gland Anatomy 0.000 claims abstract description 11
- 239000003129 oil well Substances 0.000 claims description 12
- 238000009434 installation Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 10
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention relates to a follow-up centering sealing device of a pumping well head, which seals a pumping polished rod by packings arranged in a packing box. The sealing device is provided with a gland which tightly compresses the packings by means of nuts and a seat and a rod which are matched with each other based on ball structures, are tightly compressed by a ball head gland and are sealed by a seal ring, one end of a ball structure rod is connected with a fixed sliding disk seat, the fixed sliding disk seat is connected with a pressure disk by the packing box, and the center of the fixed sliding disk seat can move relative to the center of the packing box; and the number of the packings is two, wherein the outer circle end of one packing is formed into a cone, and the outer circle is provided with a thread. The inner hole of the fixed sliding disk seat forms clearance fit with the outer circle of the packing box, and the clearance is twice of that in the movement of the center. Because the fixed sliding disk seat can move relative to the center of the packing box, the invention realizes the movement of centers between the packings and the seat and the rod which are matched with each other based on ball structures, thereby eliminating the lateral error of the pumping polished rod. By forming the outer circle end of one packing into a threaded cone based on the two-packing design, the invention facilitates the installation and the replacement of the packings.
Description
One, technical field
The present invention relates to a kind of mouth of pumped oil well, particularly servo-actuated centering mouth of pumped oil well sealing device.
Two, background technology
Rod pumping system is the main mode that crude oil in China is produced, and the performance of wellhead polish rod sealing device in this system's ground installation directly influences the work quality of ground pumping unit.The oil field pumping well mouth sealing device mainly uses fixed wellhead polish rod sealing device at present.Sealing device is installed in polished rod sealer in the top threeway of well head production tree, packing is packed in the packing box inner chamber of sealer main body top, utilize Ge Lan and seal box pressure cap to compress then, thereby make sealing ring internal circular surfaces and the obvolvent of polished rod external surface, and then the annular chamber envelope place of seal box main body and polished rod formation, to prevent the leakage of well head place crude oil.In a single day well head installs, the position of its sealer is relative fixed also, but the foozle of oil pumper, alignment error and when carrying changes when using deformation of members can cause polished rod axis and sealer main body axis generation random offset, according to statistics, the journal offset that has 3-10mm more than 80% of sucker rod pumping well sum.Because the conventional wellhead polish rod sealer that is installed in the well head threeway can not tuningout, will force polished rod and well head centering, form a very big lateral force fulcrum like this at the sealed packing place, thereby make polished rod bigger with packing stressed difference on circumferential fitting face in pumping, a stressed bigger side is worn and torn very soon, and causes the seal failure of whole group packing.Its sealing friction of its conventional sealer for mouth of pumped oil well is big, the sealing frequent failure, and crude oil runs and leaks, contaminated environment, the oil recovery workman wants regularly tight packing or stops well and change, and the oil well production rate is reduced greatly, influences the crude output in oil field.
The patent No. 02269638.5, title: multi-functional servo-actuated centering mouth of pumped oil well sealing device, disclose a kind of outside and made flange shapely the packing box body, be installed in the packing_seal follower, adorn ball between flange card and the gland.One side of packing box pressure cap is made tubulose, and interior dress steel ball and spring seal with top cover.The lower end is screwed on the gate base.The rubber gate is housed below the packing_seal follower, sealing well head when being used to change the top packing, Follow-up rubber gate is made of two compression plate, rubber ring, gate cavity and supporters of installing up and down, O type rubber ring is housed between the compression plate up and down, and following compression plate is installed in the gate intracavity bottom.The gate cavity bottom is sphere-like, is installed on the base of sphere-like.Adopted the sphere-like fit structure between base and the gate cavity, constituted wellhead assembly and transfer Dou mechanism, solved the inclined to one side Dou problem of well head, do not solved the lateral error of oil pumping polish rod, operating personnel change the packing inconvenience.
Three, summary of the invention
The purpose of this invention is to provide a kind of oil pumping polish rod lateral error of eliminating, make things convenient for the oil recovery workman to change a kind of servo-actuated centering mouth of pumped oil well sealing device of packing.
The object of the present invention is achieved like this:. a kind of servo-actuated centering mouth of pumped oil well sealing device, by the packing that is contained in the packing box oil pumping polish rod is sealed, there is gland to compress packing by pressure cap, the seat and the bar that have chondritic to match, seat and bar compress by the bulb gland, are sealed by sealing ring, and an end of chondritic bar is sat crosslegged with fixing slippage and is connected, fixedly slippage is sat crosslegged and is connected by platen with packing box, and fixedly the slippage center of sitting crosslegged can be moved relative to the center of packing box.Packing has two groups, and wherein cylindrical one end of one group of packing becomes cone, and cylindrical has screw thread.Fixedly the slippage endoporus of sitting crosslegged and the cylindrical matched in clearance of packing box, its gap is 2 times that move at the center.
Because fixedly slippage is sat crosslegged and can be moved relative to the center of packing box, thereby the lateral error of elimination oil pumping polish rod is moved at seat that the realization packing matches with chondritic and the center between the bar; Adopt two groups of packings, wherein one group of cylindrical one end becomes cone, has screw thread to make packing install and change facility.
Four, description of drawings
Below in conjunction with drawings and Examples the utility model is described further.
Fig. 1 is the one embodiment of the invention structural representation.
Among the figure: 1, gland; 2, pressure cap; 3, packing one; 4, packing two; 5, packing box; 6, platen; 7, joint ring; 8, sit crosslegged; 9, bar; 10, ball formula gland; 11, sealing ring; 12, seat
Five, the specific embodiment
Embodiment 1:. servo-actuated centering mouth of pumped oil well sealing device has the packing that is contained in the packing box 5 that oil pumping polish rod is sealed, packing has two groups, packing 1 and packing 24, wherein cylindrical one end of packing 24 becomes cone, cylindrical has screw thread, there is gland 1 to compress packing by pressure cap 2, the seat 12 and the bar 9 that have chondritic to match, seat 12 and bar 9 compress by bulb gland 10, by sealing ring 11 sealings, one end of chondritic bar 9 and fixing slippage are sat crosslegged and 8 are connected, fixedly slippage is sat crosslegged and 8 is connected by platen 6 with packing box 5, fixedly slippage 8 the center of sitting crosslegged can be moved relative to the center of packing box 5, fixing sit crosslegged 8 the endoporus and the cylindrical matched in clearance of packing box 5 of slippage, and its gap is 2 times that move at the center.
Claims (3)
1. servo-actuated centering mouth of pumped oil well sealing device, by the packing that is contained in the packing box (5) oil pumping polish rod is sealed, there is gland (1) to compress packing by pressure cap (2), the seat (12) and the bar (9) that have chondritic to match, seat (12) and bar (10) compress by bulb gland (10), seal by sealing ring (11), it is characterized in that, one end of described chondritic bar (9) and fixing slippage sit crosslegged (8) be connected, described fixedly slippage sit crosslegged (8) be connected by platen (6) with described packing box (5), the described fixedly slippage center of (8) of sitting crosslegged can be moved relative to the center of described packing box (5).
2. servo-actuated centering mouth of pumped oil well sealing device according to claim 1 is characterized in that described packing has two groups (3) and (4), and wherein cylindrical one end of packing (4) becomes cone, and cylindrical has screw thread.
3. according to claim 1 and 2 described servo-actuated centering mouth of pumped oil well sealing devices, it is characterized in that, the sit crosslegged cylindrical matched in clearance of endoporus and described packing box (5) of (8) of described fixedly slippage, its gap is 2 times that move at the center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101814167A CN101956539A (en) | 2009-07-16 | 2009-07-16 | Follow-up centering sealing device of pumping well head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101814167A CN101956539A (en) | 2009-07-16 | 2009-07-16 | Follow-up centering sealing device of pumping well head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101956539A true CN101956539A (en) | 2011-01-26 |
Family
ID=43484106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101814167A Pending CN101956539A (en) | 2009-07-16 | 2009-07-16 | Follow-up centering sealing device of pumping well head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101956539A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014320A (en) * | 2016-07-14 | 2016-10-12 | 哈尔滨理工大学 | Follow-up type structure of wellhead sealer |
| CN106869850A (en) * | 2017-02-24 | 2017-06-20 | 加加力重钢江苏有限公司 | High-pressure polished rod sealer |
| CN107100578A (en) * | 2017-04-18 | 2017-08-29 | 盐城金澳特石油机械有限公司 | The anti-pollution global function oil-pumping well head equipment of portable blowout prevention |
| CN108386151A (en) * | 2018-03-16 | 2018-08-10 | 大连坤麟金属制品有限公司 | A kind of newest oil pumping facility well mouth sealing device |
-
2009
- 2009-07-16 CN CN2009101814167A patent/CN101956539A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014320A (en) * | 2016-07-14 | 2016-10-12 | 哈尔滨理工大学 | Follow-up type structure of wellhead sealer |
| CN106869850A (en) * | 2017-02-24 | 2017-06-20 | 加加力重钢江苏有限公司 | High-pressure polished rod sealer |
| CN107100578A (en) * | 2017-04-18 | 2017-08-29 | 盐城金澳特石油机械有限公司 | The anti-pollution global function oil-pumping well head equipment of portable blowout prevention |
| CN108386151A (en) * | 2018-03-16 | 2018-08-10 | 大连坤麟金属制品有限公司 | A kind of newest oil pumping facility well mouth sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Nantong Zhongqing Machinery Factory Zhao Zhong Document name: Notification of before Expiration of Request of Examination as to Substance |
|
| DD01 | Delivery of document by public notice |
Addressee: Nantong Zhongqing Machinery Factory Document name: Notification that Application Deemed to be Withdrawn |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110126 |