CN201835816U - Flexible joint of spherical connecting structure - Google Patents
Flexible joint of spherical connecting structure Download PDFInfo
- Publication number
- CN201835816U CN201835816U CN2010205847261U CN201020584726U CN201835816U CN 201835816 U CN201835816 U CN 201835816U CN 2010205847261 U CN2010205847261 U CN 2010205847261U CN 201020584726 U CN201020584726 U CN 201020584726U CN 201835816 U CN201835816 U CN 201835816U
- Authority
- CN
- China
- Prior art keywords
- spherical
- flexible pipe
- pipe nipple
- lower contact
- hemisphere jut
- 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 provides a flexible joint of a spherical connecting structure, comprising an upper joint, a lower joint and a locking nut. A spherical bulge is arranged at one end of the upper joint, a concave hole matched with the spherical bulge is arranged at one end of the lower joint, the spherical bulge is contained in the concave hole, and the locking nut is threadedly locked at the opening part of the concave hole. In the utility model, the upper joint and the lower joint are matched through the spherical bulge and the concave hole and are fixed by the locking nut, so as to ensure the connecting reliability; a limit structure is arranged between the bulge and the concave hole for limiting an instrument to rotate within plus/minus 10 degrees in the X-axis and Y-axis directions, and no torsion occurs; a line through pipe is formed by coiling a stainless steel pipe, a coiling part is contained in a spherical cavity of a spherical connecting part of the upper joint and the lower joint, a pressing block and a pressing screw are sheathed at two sides of the line through pipe and are respectively pressed on the upper joint and the lower joint for sealing function, and a mechanical sealing structure formed by the pressing block and the pressing screw has simple and reliable structure and does not need inspection and maintenance.
Description
[technical field]
The utility model relates to a kind of cased well downhole instrument, particularly a kind of can be at the downhole instrument of free bend on the specific direction, in certain angle.
[background technology]
When the sleeve in oil field well is logged well, there are a lot of high inclined shafts or horizontal well, owing to have certain gradient, bending in the well.For the instrument string is moved smoothly, need to reduce the maximum linear length of the instrument string that is rigidly connected in well; And when cased hole logging, some instrument is need be in sleeve pipe placed in the middle in a string instrument of going into the well just can operate as normal, and this need isolate part from tool string must instrument placed in the middle.Making needs instrument placed in the middle and does not need instrument placed in the middle to can be good at being connected in the instrument string.Flexible pipe nipple just can reduce tool string in the instrument string maximum linear length helps the beginning kickoff point (KOP) by bending or Short Radius Horizontal Wells.Help to move in high inclined shaft of instrument string or the horizontal well.And can be from tool string isolated part must instrument placed in the middle, reduce by instrument weight placed in the middle.But existing flexible pipe nipple is that last lower contact is connected through the hinge on hollow spacer bar.Hinge in the last lower contact of flexible joint with the main shaft vertical direction on, and it is orthogonal to go up the hinge of lower contact.Thereby flexible pipe nipple can be rotated around hinge in certain angle.This kind flexible joint is owing to be subjected to the bonding strength that influences it in structure and space lower.Cause the damage of instrument easily.
[utility model content]
The purpose of this utility model provides a kind of flexible pipe nipple of spherical syndeton, to solve the problems of the technologies described above.
To achieve these goals, the utility model adopts following technical scheme:
A kind of flexible pipe nipple of spherical syndeton, comprise top connection, lower contact and locking nut, described top connection one end is provided with hemisphere jut, described lower contact one end is provided with the shrinkage pool that cooperates with described hemisphere jut, described hemisphere jut is contained in the described shrinkage pool, and described locking nut screw lock is in described shrinkage pool opening part.
Be provided with a pair of position limiting structure between described hemisphere jut and the shrinkage pool.
Described position limiting structure comprises stopper slot and limited post, and described stopper slot is arranged on the described hemisphere jut, and described limited post extends in the described stopper slot.
Be equipped with host cavity in described top connection and the lower contact, described flexible pipe nipple also comprises wire-passing tube, described wire-passing tube is that the stainless steel tube coiling is made, this wire-passing tube comprises coiling portion and extends into two extensions in two host cavities of top connection and lower contact, and described coiling portion is contained in the described hemisphere jut cavity.
Described flexible pipe nipple also comprises housing screw and compact heap, and described housing screw and compact heap are sheathed on the extension periphery of described wire-passing tube, and described housing screw screw lock is in described top connection or lower contact.
Compared with prior art, the utlity model has following advantage:
1, adopts hemisphere jut and shrinkage pool to cooperate between top connection and the lower contact, and be fixed together, guarantee the reliability of connection by locking nut;
2, stopper slot and limited post are positioned at the spherical part of lower contact, can limit the rotation of instrument in X-axis and Y direction ± 10 ° scope, and not twist;
3, wire-passing tube adopts the stainless steel tube coiling to make, and simple and reliable for structure, coiling portion is contained in the spherical hollow space of lower contact ball-type connecting portion, and compact heap and housing screw are enclosed within the both sides of wire-passing tube, are pressed to respectively and play sealing function in the lower contact;
4, sealing of the present utility model is to realize by the mechanical seal structure that compact heap and housing screw are formed, this simple in structure, reliably, do not need maintenance and inspection.
[description of drawings]
Fig. 1 is the structural representation of the flexible pipe nipple of a kind of spherical syndeton of the utility model.
[specific embodiment]
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail.
See also shown in Figure 1ly, the flexible pipe nipple of a kind of spherical syndeton of the utility model mainly is made up of plug 1, top connection 2, lower contact 3, locking nut 4, wire-passing tube 5, housing screw 6, compact heap 7, stopper slot 8, limited post 9 and helmet 10.
The utility model top connection 2 has a hemisphere jut 20, lower contact 3 has a spherical shrinkage pool 30 that matches with top connection hemisphere jut 20, projection 20 is enclosed within shrinkage pool 30 parts, and locking nut 4 is locked projection 20 in shrinkage pool 30, realizes the rotation of instrument; Stopper slot 8 and limited post 9 are positioned at the spherical part of lower contact, can limit the rotation of instrument in X-axis and Y direction ± 10 ° scope, and not twist; One end screw lock, one plug 1 of top connection 2, an end screw lock of lower contact 3 has a helmet 10.
The coiling of the utility model wire-passing tube 5 usefulness stainless steel tubes is made, and coiling place is arranged in the spherical hollow space of lower contact ball-type connecting portion; The two ends of wire-passing tube 6 are with compact heap 7 and housing screw 6, form mechanical seal structure by compact heap 7 and housing screw 6.
Claims (5)
1. the flexible pipe nipple of a spherical syndeton, it is characterized in that: comprise top connection (2), lower contact (3) and locking nut (4), described top connection (2) one ends are provided with hemisphere jut (20), described lower contact (3) one ends are provided with the shrinkage pool (30) that cooperates with described hemisphere jut (20), described hemisphere jut (20) is contained in the described shrinkage pool (30), and described locking nut (4) screw lock is in described shrinkage pool (30) opening part.
2. a kind of flexible pipe nipple of spherical syndeton according to claim 1 is characterized in that: be provided with a pair of position limiting structure between described hemisphere jut (20) and the shrinkage pool (30).
3. as the flexible pipe nipple of a kind of spherical syndeton as described in the claim 2, it is characterized in that: described position limiting structure comprises stopper slot (8) and limited post (9), described stopper slot (8) is arranged on the described hemisphere jut (20), and described limited post (9) extends in the described stopper slot (8).
4. as a kind of flexible pipe nipple of spherical syndeton as described in each in the claim 1 to 3, it is characterized in that: be equipped with host cavity in described top connection (2) and the lower contact (3), described flexible pipe nipple also comprises wire-passing tube (5), described wire-passing tube (5) is made for the stainless steel tube coiling, this wire-passing tube (5) comprises coiling portion and extends into two interior extensions of two host cavities of top connection (2) and lower contact (3), and described coiling portion is contained in the described hemisphere jut (20).
5. as the flexible pipe nipple of a kind of spherical syndeton as described in the claim 4, it is characterized in that: described flexible pipe nipple also comprises housing screw (6) and compact heap (7), described housing screw (6) and compact heap (7) are sheathed on the extension periphery of described wire-passing tube (5), and described housing screw screw lock is in described top connection (2) or lower contact (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205847261U CN201835816U (en) | 2010-10-29 | 2010-10-29 | Flexible joint of spherical connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205847261U CN201835816U (en) | 2010-10-29 | 2010-10-29 | Flexible joint of spherical connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201835816U true CN201835816U (en) | 2011-05-18 |
Family
ID=44005922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205847261U Expired - Fee Related CN201835816U (en) | 2010-10-29 | 2010-10-29 | Flexible joint of spherical connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201835816U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443086A (en) * | 2014-09-25 | 2016-03-30 | 中国石油化工股份有限公司 | Connecting device for perforation gun |
| CN105507880B (en) * | 2015-12-28 | 2018-11-16 | 中国石油天然气集团公司 | A kind of production logging flexible nipple |
-
2010
- 2010-10-29 CN CN2010205847261U patent/CN201835816U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443086A (en) * | 2014-09-25 | 2016-03-30 | 中国石油化工股份有限公司 | Connecting device for perforation gun |
| CN105507880B (en) * | 2015-12-28 | 2018-11-16 | 中国石油天然气集团公司 | A kind of production logging flexible nipple |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20191029 |