CN201031648Y - Auto-compensation conical packing kit - Google Patents
Auto-compensation conical packing kit Download PDFInfo
- Publication number
- CN201031648Y CN201031648Y CNU2007201430712U CN200720143071U CN201031648Y CN 201031648 Y CN201031648 Y CN 201031648Y CN U2007201430712 U CNU2007201430712 U CN U2007201430712U CN 200720143071 U CN200720143071 U CN 200720143071U CN 201031648 Y CN201031648 Y CN 201031648Y
- Authority
- CN
- China
- Prior art keywords
- packing box
- packing
- ring
- last
- endoporus
- 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 automatic compensation taper packing box. An upper pressing block and an upper packing are arranged between a gland and the inner hole of an upper packing box body. The lower end of an upper packing box body is connected with a lower packing box body. A lower gland and a lower packing box are arranged between the upper and lower packing box bodies. The inner wall of the middle part of the upper packing box shrinks towards the packing box center to form a ring shoulder; the inner holes of the upper packing box body on the top of the ring shoulder are reverse taper ones. A seal ring is arranged between the top of the ring shoulder and the underside of the upper packing box. The upper part of the inner holes of the seal ring is reverse taper holes and the lower part of which is cylindrical one. The size of the cylindrical hole matches with an outer diameter of a polished rod. An upper ring packing box gasket is arranged between the underside of the ring shoulder and the top of the lower pressing block. An outer circumferential wall of the lower pressing block is covered with a lower ring packing box gasket which matches with the inner holes of the under part of the upper packing box body. The utility model can automatically compensate the packing box abrasion, effectively make use of the packing box, improve sealing performance and eliminate petroleum leakage when the well head pressure is high and the packing box can not be displaced due to serious abrasion of the lower packing box and sealing failure.
Description
Technical field
The utility model belongs to the improvement of oil field pumping well with the packing box structure, particularly compensates the taper packing box automatically.
Background technology
Existing oil field pumping well packing body endoporus or the straight hole or the taper hole of packing box, packing endoporus bottom surface is the plane, packing can't be realized compensation when compressing.In addition, during the packing serious wear, the well head pressure height can't be changed instantly, causes the oil leakage serious.
The utility model content
The purpose of this utility model is to provide a kind of automatic compensation taper packing box, can compensate the packing wearing and tearing automatically, effectively utilizes packing, improves sealing performance; Eliminate oil leakage phenomenon because of descending the packing serious wear, can't sealing the well head pressure height, occur in the time that packing can't being changed.
The purpose of this utility model is achieved in that a kind of automatic compensation taper packing box, comprise the last packing body that has gland, in the upper plenum that constitutes between gland and the last packing body top endoporus upper holder block and last packing are being set from top to bottom, last packing body lower end is connecting to descend the packing body, on, lower lock block and following packing are being set respectively in the cavity that constitutes between the following packing body from top to bottom, last packing body middle part inwall shrinks the looping shoulder block to packing body center, the last packing body endoporus of annular shoulder block top is a reverse taper hole, be equipped with joint ring between the end face of annular shoulder block and the last packing bottom surface, joint ring endoporus top is the rounding taper hole, joint ring endoporus bottom is a cylindrical hole, the size of cylindrical hole and the external diameter of polished rod are complementary, be provided with between annular shoulder block bottom surface and the lower lock block end face and going up annular packing packing ring, suit the following annular packing packing ring that matches with last packing body bottom endoporus on the lower lock block periphery wall.
When the utility model uses, directly it is connected with well head and gets final product.Owing between the annular shoulder block end face at last packing bottom surface and last packing body middle part, joint ring is being set, joint ring endoporus top is the rounding taper hole, joint ring endoporus bottom is a cylindrical hole, the size of cylindrical hole and the external diameter of polished rod are complementary, after last packing wearing and tearing, screw gland like this, last packing position descends, progress in the rounding taper hole of joint ring, realize that the filling after the packing wearing and tearing compensates.And existing packing body endoporus bottom surface is the plane, and packing can't be realized compensation when compressing.In addition, owing to be provided with between annular shoulder block bottom surface and the lower lock block end face and going up annular packing packing ring, suit the following annular packing packing ring that matches with last packing body bottom endoporus on the lower lock block periphery wall, instantly packing serious wear, well head pressure height, can't change, cause oil when leakage, by screwing down the packing body, under the effect of upper and lower annular packing packing ring, can realize effective sealing of this grade, prevent leakage of oil, prevent subordinate's seal failure.The utility model is simple in structure, can compensate the packing wearing and tearing automatically, effectively utilizes packing, improves sealing performance; Eliminate oil leakage phenomenon, for field produces provides reliable guidance because of descending the packing serious wear, can't sealing the well head pressure height, occur in the time that packing can't being changed.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Accompanying drawing is that master of the present utility model looks cross-sectional view.
The specific embodiment
A kind of automatic compensation taper packing box, as shown in drawings, comprise the last packing body 4 that has gland 1, in the upper plenum that constitutes between gland 1 and the last packing body 4 top endoporus upper holder block 2 and last packing 3 are being set from top to bottom, the tapering of last packing body 4 top inner hole walls is 5 °-15 °.Last packing body 4 lower ends are connecting to descend packing body 10, on, following packing body 4, lower lock block 8 and following packing 9 are being set respectively in the cavity that constitutes between 10 from top to bottom, last packing body 4 middle part inwalls shrink the looping shoulder block to packing body center, last packing body 4 endoporus of annular shoulder block top are reverse taper hole, be equipped with joint ring 5 between the end face of annular shoulder block and last packing 3 bottom surfaces, joint ring 5 endoporus tops are the rounding taper hole, joint ring 5 endoporus bottoms are cylindrical hole, the size of cylindrical hole and the external diameter of polished rod are complementary, be provided with between annular shoulder block bottom surface and lower lock block 8 end faces and going up annular packing packing ring 6, suit the following annular packing packing ring 7 that matches with last packing body 4 bottom endoporus on lower lock block 8 periphery walls.
Owing between the annular shoulder block end face at last packing 3 bottom surfaces and last packing body 4 middle parts, joint ring 5 is being set, joint ring 5 endoporus tops are the rounding taper hole, joint ring 5 endoporus bottoms are cylindrical hole, the size of cylindrical hole and the external diameter of polished rod are complementary, and after last packing 3 wearing and tearing, screw gland 1 like this, make that going up packing 3 positions descends, its lower end progresses in the rounding taper hole of joint ring 5 further with the polished rod jam-packed, can realize the filling compensation after the packing wearing and tearing, improves sealing effectiveness.
In addition, owing to be provided with between annular shoulder block bottom surface and lower lock block 8 end faces and going up annular packing packing ring 6, suit the following annular packing packing ring 7 that matches with last packing body bottom endoporus on lower lock block 8 periphery walls, instantly packing 9 serious wear, well head pressure height, can't change, cause oil when leakage, by screwing down packing body 10, under the effect of upper and lower annular packing packing ring 6,7, can realize effective sealing of this grade, prevent leakage of oil.
Claims (2)
1. one kind compensates the taper packing box automatically, comprise the last packing body (4) that has gland (1), in the upper plenum that constitutes between gland (1) and last packing body (4) the top endoporus upper holder block (2) and last packing (3) are being set from top to bottom, last packing body (4) lower end is connecting to descend packing body (10), on, following packing body (4), (10) in the cavity that constitutes between lower lock block (8) and following packing (9) are being set respectively from top to bottom, last packing body (4) middle part inwall shrinks the looping shoulder block to packing body center, it is characterized in that: last packing body (4) endoporus of annular shoulder block top is a reverse taper hole, be equipped with joint ring (5) between the end face of annular shoulder block and last packing (3) bottom surface, joint ring (5) endoporus top is the rounding taper hole, joint ring (5) endoporus bottom is a cylindrical hole, the size of cylindrical hole and the external diameter of polished rod are complementary, be provided with between annular shoulder block bottom surface and lower lock block (8) end face and going up annular packing packing ring (6), suit the following annular packing packing ring (7) that matches with last packing body (4) bottom endoporus on lower lock block (8) periphery wall.
2. automatic compensation taper packing box according to claim 1 is characterized in that: the tapering of going up packing body (4) top inner hole wall is 5 °-15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201430712U CN201031648Y (en) | 2007-04-25 | 2007-04-25 | Auto-compensation conical packing kit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201430712U CN201031648Y (en) | 2007-04-25 | 2007-04-25 | Auto-compensation conical packing kit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201031648Y true CN201031648Y (en) | 2008-03-05 |
Family
ID=39163540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201430712U Expired - Fee Related CN201031648Y (en) | 2007-04-25 | 2007-04-25 | Auto-compensation conical packing kit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201031648Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409991A (en) * | 2011-12-19 | 2012-04-11 | 西安思坦仪器股份有限公司 | Wellhead blowout prevention sealing device |
-
2007
- 2007-04-25 CN CNU2007201430712U patent/CN201031648Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409991A (en) * | 2011-12-19 | 2012-04-11 | 西安思坦仪器股份有限公司 | Wellhead blowout prevention sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Karamay Shengli Plateau Machinery Co., Ltd. Assignor: Lv Xiangsheng Contract record no.: 2013650000015 Denomination of utility model: Auto-compensation conical packing kit Granted publication date: 20080305 License type: Exclusive License Record date: 20130521 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080305 Termination date: 20160425 |