CN203531765U - Expansion corn locking mechanism - Google Patents
Expansion corn locking mechanism Download PDFInfo
- Publication number
- CN203531765U CN203531765U CN201320752310.XU CN201320752310U CN203531765U CN 203531765 U CN203531765 U CN 203531765U CN 201320752310 U CN201320752310 U CN 201320752310U CN 203531765 U CN203531765 U CN 203531765U
- Authority
- CN
- China
- Prior art keywords
- expansion cone
- diameter part
- diameter
- small
- rubber pad
- 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
Links
- 240000008042 Zea mays Species 0.000 title abstract 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 title abstract 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 title abstract 2
- 235000005822 corn Nutrition 0.000 title abstract 2
- 210000000078 claw Anatomy 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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Abstract
The utility model discloses an expansion corn locking mechanism which comprises a central tube, wherein the central tube comprises a large-diameter tube; a small-diameter part is integrally connected with the large-diameter part; the large-diameter and the small-diameter parts are coaxially arranged; the diameter of the large-diameter part is smaller than the diameter of the small-diameter part; an expansion cone is connected onto the small-diameter part in a clamping manner; a clamping groove with a conical longitudinal section is formed in the inner wall of the expansion cone; a clamping claw which can be clamped into the clamping groove is fixedly connected with the small-diameter part; an annular groove is formed in one end, close to the small-diameter part, of the large-diameter part; a first O-shaped sealing ring is fixedly connected with the inferior of the annular groove. By adopting the technical scheme, a good sealing effect is achieved due to the arrangement of the first O-shaped sealing ring, a second O-shape sealing ring and the rubber pad; the operation is simple due to the cooperation of the clamping claw and clamping groove; the rubber pad is connected through a nut, so that the leak tightness of the rubber pad and an oil tube can be adjusted by adjusting the nut.
Description
Technical field
The utility model relates to technical field of petroleum extraction, relates in particular to a kind of locking mechanism for expansion cone.
Background technology
At present, expandable casing patching is reinforced in tubing string and expansion tube completion tubular column, and working string is connected with expansion cone conventionally, and expansion tube tubing string weight is suspended on its conical surface contacting with expansion cone.Expansion cone tubing string weight and the axial force producing while playing lower tubular column act directly in expansion cone, excessive when expansion tube tubing string weight, put on repeatedly to put tubing string and cause expansion cone in advance expansion tube to be expanded when expansion tube tubing string is met card in down-hole.In addition, when connecting, central tube is to adopt to be threaded with expansion cone, and this connected mode needs screw thread to dock and the school operation such as tightly, and complicated operation, if misoperation will affect sealing effectiveness.
Summary of the invention
The technical problems to be solved in the utility model is for the deficiencies in the prior art, and a kind of good sealing effect, locking mechanism for expansion cone simple to operate are provided.
For addressing the above problem, the utility model is by the following technical solutions: a kind of locking mechanism for expansion cone, comprise central tube, described central tube comprises large-diameter portion, on described large-diameter portion, be connected with minor diameter part, described large-diameter portion and minor diameter part coaxially arrange, the diameter of described large-diameter portion is greater than the diameter of minor diameter part, on described minor diameter part, be connected with expansion cone, on the inwall of described expansion cone, offer the draw-in groove that longitudinal section is taper, on described minor diameter part, be fixedly connected with the claw that can snap in draw-in groove, one end near minor diameter part on described large-diameter portion offers annular groove, in described annular groove, be fixedly connected with an O RunddichtringO, one end near large-diameter portion in described expansion cone is connected with annular protrusion, described annular protrusion can snap fit onto in annular groove.
Below further improvement of the utility model:
One end away from annular protrusion in described expansion cone is provided with boss, and described expansion cone is connected with nut near the threaded one end of boss, and the position in described expansion cone between nut and boss is set with rubber pad.
Further improve:
Position near rubber pad on the inwall of described expansion cone is provided with the 2nd O RunddichtringO.
The utility model adopts technique scheme, an O RunddichtringO, the 2nd O RunddichtringO, rubber pad be arranged so that good sealing effect; Simple by draw-in groove and draw-in groove compounding practice; Rubber pad connects by nut, by the sealing of adjusting nut capable of regulating rubber pad and oil pipe.
Below in conjunction with accompanying drawing the technical solution of the utility model, be described further.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model.
In figure: 1-central tube; 2-expansion cone; 3-the one O RunddichtringO; 4-the 2nd O RunddichtringO; 5-nut; 6-rubber pad; 101-large-diameter portion; 102-minor diameter part; 103-annular groove; 104-claw; 201-annular protrusion; 202-draw-in groove; 203-boss.
The specific embodiment
Embodiment, as shown in Figure 1, a kind of locking mechanism for expansion cone, comprise central tube 1, described central tube 1 comprises large-diameter portion 101, on described large-diameter portion 101, is connected with minor diameter part 102, and described large-diameter portion 101 coaxially arranges with minor diameter part 102, the diameter of described large-diameter portion 101 is greater than the diameter of minor diameter part 102, on described minor diameter part 102, is connected with expansion cone 2.
On the inwall of described expansion cone 2, offering longitudinal section is the draw-in groove 202 of taper, is fixedly connected with the claw 104 that can snap in draw-in groove 202 on described minor diameter part 102, and described claw 104 adopts elastomeric material to make.
One end near minor diameter part 102 on described large-diameter portion 101 offers annular groove 103, in described annular groove 103, be fixedly connected with an O RunddichtringO 3, one end near large-diameter portion 101 in described expansion cone 2 is connected with annular protrusion 201, and described annular protrusion 201 can enter in annular groove 103 in clamping.
One end away from annular protrusion 201 in described expansion cone 2 is provided with boss 203, described expansion cone 2 is connected with nut 5 near the threaded one end of boss 203, position in described expansion cone 2 between nut 5 and boss 203 is set with rubber pad 6, by nut 5, rubber pad 6 and boss 203 can be compressed.
Position near rubber pad 6 on the inwall of described expansion cone 2 is provided with the 2nd O RunddichtringO 4.
During use, expansion cone 2 is placed in the emission cavity of expansion tube, central tube 1 is connected with oil pipe, when expansion tube tubing string is after well head is placed, oil pipe is communicated with central tube 1 to be put into downwards in expansion tube tubing string, and when the claw 104 on central tube 1 is placed into draw-in groove 202 place, claw 104 coordinates central tube 1 is connected with expansion cone 2 with draw-in groove 202, annular protrusion 201 in expansion cone 2 is deep in annular groove 103, and an O RunddichtringO 3 plays good sealing function.Because rubber pad 6 connects by nut 5, the sealing by adjusting nut 5 capable of regulating rubber pads 6 with oil pipe.
Claims (3)
1. a locking mechanism for expansion cone, comprise central tube (1), it is characterized in that: described central tube (1) comprises large-diameter portion (101), on described large-diameter portion (101), be connected with minor diameter part (102), described large-diameter portion (101) coaxially arranges with minor diameter part (102), the diameter of described large-diameter portion (101) is greater than the diameter of minor diameter part (102), on described minor diameter part (102), be connected with expansion cone (2), on the inwall of described expansion cone (2), offer the draw-in groove that longitudinal section is taper (202), on described minor diameter part (102), be fixedly connected with the claw (104) that can snap in draw-in groove (202), the upper one end near minor diameter part (102) of described large-diameter portion (101) offers annular groove (103), in described annular groove (103), be fixedly connected with an O RunddichtringO (3), the upper one end near large-diameter portion (101) of described expansion cone (2) is connected with annular protrusion (201), described annular protrusion (201) can snap fit onto in annular groove (103).
2. a kind of locking mechanism for expansion cone according to claim 1, it is characterized in that: the upper one end away from annular protrusion (201) of described expansion cone (2) is provided with boss (203), described expansion cone (2) is connected with nut (5) near the threaded one end of boss (203), and the position being positioned in described expansion cone (2) between nut (5) and boss (203) is set with rubber pad (6).
3. a kind of locking mechanism for expansion cone according to claim 2, is characterized in that: the position near rubber pad (6) on the inwall of described expansion cone (2) is provided with the 2nd O RunddichtringO (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320752310.XU CN203531765U (en) | 2013-11-26 | 2013-11-26 | Expansion corn locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320752310.XU CN203531765U (en) | 2013-11-26 | 2013-11-26 | Expansion corn locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203531765U true CN203531765U (en) | 2014-04-09 |
Family
ID=50417987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320752310.XU Expired - Fee Related CN203531765U (en) | 2013-11-26 | 2013-11-26 | Expansion corn locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203531765U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110238497A (en) * | 2019-06-26 | 2019-09-17 | 张伯勤 | A kind of plasma cutting gun with self-locking device |
-
2013
- 2013-11-26 CN CN201320752310.XU patent/CN203531765U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110238497A (en) * | 2019-06-26 | 2019-09-17 | 张伯勤 | A kind of plasma cutting gun with self-locking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 262100 Xingan Industrial Park, Anqiu, Shandong, No. 9, No. Patentee after: Weifang Yuhong Petroleum Machinery Co., Ltd. Address before: 262100 Xingan Industrial Park, Anqiu, Shandong, No. 9, No. Patentee before: WEIFANG YUHONG PETROLEUM MACHINERY CO., LTD. |
|
| CU01 | Correction of utility model patent |
Correction item: Patentee Correct: Weifang Yuhong Petroleum Machinery Co., Ltd. False: WEIFANG YUHONG PETROLEUM MACHINERY CO., LTD. Number: 15 Page: The title page Volume: 30 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Patentee Correct: Weifang Yuhong Petroleum Machinery Co., Ltd. False: WEIFANG YUHONG PETROLEUM MACHINERY CO., LTD. Number: 15 Volume: 30 |
|
| ERR | Gazette correction | ||
| RECT | Rectification | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20181126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |