CN2197455Y - Adjustable sealing box for oil well top - Google Patents
Adjustable sealing box for oil well top Download PDFInfo
- Publication number
- CN2197455Y CN2197455Y CN 94224498 CN94224498U CN2197455Y CN 2197455 Y CN2197455 Y CN 2197455Y CN 94224498 CN94224498 CN 94224498 CN 94224498 U CN94224498 U CN 94224498U CN 2197455 Y CN2197455 Y CN 2197455Y
- Authority
- CN
- China
- Prior art keywords
- box body
- clamping sleeve
- inner chamber
- airtight
- order
- 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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Abstract
The utility model relates to an adjustable sealing box for a well head of an oil pumping machine, which comprises a sealing box body, wherein, one end of the box body is connected with an outlet tube of an oil well, and the inner side of the other end of the box body is provided with sealing filler and pressing sleeves used for pressing the sealing filler. The utility model is characterized in that the inner chamber of the sealing box body, which is provided with first stage sealing filler, is in the shape of a station cone, the external end of the inner chamber in the shape of a station cone is provided with an internal thread used for installing a first stage pressing sleeve. The inner chamber of the first stage pressing sleeve is in the shape of a station cone, and second stage sealing filler is arranged in the inner chamber of the pressing sleeve. The end part of the pressing sleeve is provided with an internal thread used for installing a second stage pressing sleeve, and corresponding outer threads are arranged on the first and the second stage pressing sleeves. The utility model has the advantage of long service life.
Description
The utility model relates to a kind of sealing device of oil pumping polish rod of sucker rod pumping machine.
In the manufacturing process of sucker rod pumping well, because the existence of oil pumper and wellhead for production alignment error, particularly because the accuracy of manufacture of underground working factor and ground pumping unit, and parts such as oil pumping polish rod produce reasons such as distortion at bearing load, make oil pumping polish rod skew swing, thereby the frictional resistance of polished rod motion is increased, seal sharply weares and teares, and causes crude oil leakage.Solution at this type of problem in the prior art has many kinds, as CN-90104313.7 and US-5058668 etc.Yet all there is complex structure in these solutions, the defective of manufacturing cost height and poor sealing performance.
The purpose of this utility model provides a kind of simple in structure, the rod-pumped well mouth sealing device of long service life and good seal performance.
Realize the adjustable seal box of oil pumper well head of the purpose of the utility model, comprise a sealing box body, one end of this box body is connected with the oil well outlet, airtight and watertight padding is arranged and be used to compress the clamping sleeve of airtight and watertight padding in the other end installed inside of this box body, it is characterized in that, the inner chamber that said sealing box body is installed first order airtight and watertight padding is the platform taper, have the internal thread that is used to install first order clamping sleeve in the outer end of this conical internal cavity, the inner chamber of said first order clamping sleeve is the platform taper, second level airtight and watertight padding is installed in the inner chamber of this clamping sleeve, and have the internal thread that is used to install second level clamping sleeve in its end, first, have corresponding external screw thread on the secondary clamping sleeve.
The utlity model has can remedy in the oil pumper installation process and cause filler accelerated wear test because of the light emblem of well head misaligns, and when normal wear the adjustable sealing degree, thereby improved the advantage of seal durability.
Structure of the present utility model and advantage are described by the embodiment below in conjunction with accompanying drawing will become more clear.
Fig. 1 is a sectional view of the present utility model.
Fig. 2 is the amplification view of the first order clamping sleeve in the utility model.
Referring to Fig. 1 and 2, the utility model comprises a sealing box body 1, one end 8 of box body 1 is threaded with the oil well of oil pumper 2 pipe (not shown)s, has the platform conical internal cavity 16 that is used for filling first order airtight and watertight padding 6 in its other end inboard, outer end 12 at inner chamber 16 has the internal thread that is used to install first order clamping sleeve 2, the inner chamber 26 of clamping sleeve 2 also is the platform taper, see Fig. 2 for details, 26 li second level filler 5 is installed at inner chamber, and the end 23 at inner chamber 26 has the internal thread that is used to install second level clamping sleeve 3, at first and second grades of clamping sleeves 2, have corresponding external screw thread on 3.Obviously, on sealing box body first and second grade filler and first and second grade clamping sleeve, should be provided with the hole of matching with the polished rod 4 of oil pumper.
First order clamping sleeve in the utility model sees Fig. 2 for details, wherein, at the contact jaw of first order clamping sleeve 2 and first order airtight and watertight padding 6 section of dwindling 21 is radially arranged, in the inner chamber 16 of said sealing box body 1 installation first order airtight and watertight padding 6, a flat segments 11 that matches with this section of dwindling 21 is arranged, one gap 13 that can fill airtight and watertight padding is arranged between said flat segments 11 and the section of dwindling 21, having at least two grooves 22 in axial direction on this section of dwindling, this groove preferably has four, root at each groove 22 is drilled with the radial hole 24 of a diameter greater than the groove width of groove 22, in the section of dwindling 21 and have between the externally threaded thread segment 27 and have transition annular groove 25, have chamfering 28 in the outer end of the section of dwindling 21.The purpose of this scheme is to make clamping sleeve 2 when inwardly compressing first order airtight and watertight padding 6, can prevent to block along cone to radially direction contraction.
In order to prevent that filler from draining in the oil well along oil-extractor polish-rod, between the top of the inner chamber 16 of sealing box body 1 and first order filler 6, be provided with shading ring 7.
Self-evident, on first and second grade clamping sleeve 2,3, should be provided with the work plane that can supply spanner (or other fastener) rotation clamping sleeve.
Airtight and watertight padding in the utility model, promptly usually said packing is for soaking the butter cotton.
Claims (4)
1, the adjustable seal box of a kind of oil pumper well head, comprise a sealing box body, one end of this box body is connected with the oil well outlet, airtight and watertight padding is arranged and be used to compress the clamping sleeve of airtight and watertight padding in the other end installed inside of this box body, it is characterized in that, the inner chamber that said sealing box body is installed first order airtight and watertight padding is the platform taper, have the internal thread that is used to install first order clamping sleeve in the outer end of this conical internal cavity, the inner chamber of said first order clamping sleeve is the platform taper, second level airtight and watertight padding is installed in the inner chamber of this clamping sleeve, and have the internal thread that is used to install second level clamping sleeve in its end, first, have corresponding external screw thread on the secondary clamping sleeve.
2, the adjustable seal box of oil pumper well head according to claim 1, it is characterized in that, at the contact jaw of first order clamping sleeve and first order airtight and watertight padding one section of dwindling is radially arranged, in the inner chamber of said sealing box body installation first order airtight and watertight padding, a flat segments that matches with this section of dwindling is arranged, one gap that can fill airtight and watertight padding is arranged between the said flat segments and the section of dwindling, having at least two grooves in axial direction on this section of dwindling, root at each groove is drilled with the radial hole of a diameter greater than groove width, in the section of dwindling and have and have the transition annular groove between the externally threaded thread segment, have chamfering in the outer end of the section of dwindling.
3, the adjustable seal box of oil pumper well head according to claim 2 is characterized in that, said axial groove has four.
4, according to the adjustable seal box of oil pumper well head any in the claim 1 to 3, it is characterized in that, between inner chamber top that seals box body and first order filler, be provided with shading ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94224498 CN2197455Y (en) | 1994-07-28 | 1994-07-28 | Adjustable sealing box for oil well top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94224498 CN2197455Y (en) | 1994-07-28 | 1994-07-28 | Adjustable sealing box for oil well top |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2197455Y true CN2197455Y (en) | 1995-05-17 |
Family
ID=33837900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94224498 Expired - Fee Related CN2197455Y (en) | 1994-07-28 | 1994-07-28 | Adjustable sealing box for oil well top |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2197455Y (en) |
Cited By (2)
| 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 |
| CN113530486A (en) * | 2021-08-10 | 2021-10-22 | 江苏益马机械有限公司 | Oil recovery well head seal structure |
-
1994
- 1994-07-28 CN CN 94224498 patent/CN2197455Y/en not_active Expired - Fee Related
Cited By (3)
| 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 |
| CN113530486A (en) * | 2021-08-10 | 2021-10-22 | 江苏益马机械有限公司 | Oil recovery well head seal structure |
| CN113530486B (en) * | 2021-08-10 | 2022-11-01 | 江苏益马机械有限公司 | Oil recovery well head seal structure |
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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 |