CN204253019U - Pressure-sensitive centering collar finder - Google Patents
Pressure-sensitive centering collar finder Download PDFInfo
- Publication number
- CN204253019U CN204253019U CN201420559742.3U CN201420559742U CN204253019U CN 204253019 U CN204253019 U CN 204253019U CN 201420559742 U CN201420559742 U CN 201420559742U CN 204253019 U CN204253019 U CN 204253019U
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- CN
- China
- Prior art keywords
- centering
- slide block
- pressure
- hydraulic cylinder
- centering slide
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- Expired - Fee Related
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Abstract
A kind of pressure-sensitive centering collar finder, comprise seal casinghousing, centering slide block, contact, piston, hydraulic cylinder, attaching nut, liquid control check valve, eduction valve and pressure switch, the sliding chamber of rectangle is had in housing, chamber wall has symmetrical positioning concave stations, chamber is built with 2 centering slide blocks, centering slip front has half-round cross hole, there is positioning boss rear end, centering slide block is equipped with removable contact, when left and right centering slide block is to central slide, when its positioning boss contacts with the positioning concave stations in sliding chamber, the front end of centering slide block in be formed centrally the circular channel that footpath is always greater than box cupling diameter, distance between the contact of left and right is greater than tubing diameter 2-3mm, oil pipe is limited in circular channel and also can freely passes through, the piston rod of collar finder hydraulic cylinder is connected with centering slide block by attaching nut, hydraulic cylinder is provided with hydraulic control one-way valve, overflow valve and pressure switch, pressure switch outputs signal.The utility model has oil pipe centering function, energy accurate detection tubing coupling position, reliable operation.
Description
Technical field
The utility model relates to the collar finder in oilfield oil well snubbing serving equipment, particularly a kind of pressure-sensitive centering collar finder.
Background technology
In the operation of oilfield oil well no killing well lower oil tube, oil pipe moves in well head pressure control appliance, and the position of box cupling is difficult to accurate location, well head pressure control blowout preventer switch motion can not with box cupling reasonable coordination, this not only reduces operating efficiency, sometimes also can damage well head control appliance.At present, collar finder has the several types such as machinery, electromagnetism and ultrasonic wave, owing to constantly can swing in control appliance latus rectum when oil pipe removes, which increase the difficulty of detection, the deficiency that this body structure of probe exists also have impact on accuracy and the reliability of box cupling detection.This constrains development and the extensive use of snubbing serving to a certain extent.
Summary of the invention
The utility model, for solving the problems of the technologies described above, provides a kind of pressure-sensitive centering collar finder, has oil pipe centering function, energy accurate detection tubing coupling position, reliable operation, simple to operate.
The technical solution of the utility model is as follows:
1, a kind of pressure-sensitive centering collar finder, comprise seal casinghousing, centering slide block, contact, piston, hydraulic cylinder, attaching nut, liquid control check valve, eduction valve and pressure switch, the cross section of level is had to be the sliding chamber of rectangle in the middle part of described seal casinghousing, chamber wall there is the positioning concave stations that 2 symmetrical, described sliding chamber is built with the symmetrical centering slide block in 2, left and right, described centering slip front has pincerlike half-round cross hole, there is positioning boss rear end, centering slide block is equipped with removable contact, centering slide block can slide in sliding chamber, when the positioning boss of described left and right centering slide block contacts with the positioning concave stations in described sliding chamber, the front end of 2 centering slide blocks just in be formed centrally the circular channel that footpath is always greater than box cupling diameter, now, distance 2-3mm larger than tubing diameter between 2 contacts in left and right, oil pipe is centered in this passage and also can freely passes through, collar finder each side has 1 hydraulic cylinder, piston rod in hydraulic cylinder is connected with centering slide block by attaching nut, each hydraulic cylinder is provided with pressure switch, hydraulic control one-way valve and overflow valve, left and right pressure switch constant open contact adopts the mode of serial connection to export control signal.
Pressure-sensitive centering collar finder energy accurate detection tubing coupling position of the present utility model, reliable operation, simple to operate.
Accompanying drawing explanation
Fig. 1 pressure-sensitive centering collar finder structure chart
Fig. 2 B-B sectional drawing
Hydraulic cylinder 1, piston 2, contact 3, oil pipe 4, centering slide block 5, attaching nut 6, pressure switch 7, seal casinghousing 8, positioning concave stations 8-1, hydraulic control one-way valve 9, overflow valve 10, signal output 11, pressure switch 12.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, pressure-sensitive centering collar finder of the present utility model comprises seal casinghousing 8, centering slide block 5, contact 3, piston 2, hydraulic cylinder 1, attaching nut 6, hydraulic control one-way valve 9, overflow valve 10 and pressure switch 7.Wherein, seal casinghousing 8 lumen centers has latus rectum, has adpting flange or screw up and down, and there is the sliding chamber of the square-section of level at middle part, and sliding cavity wall has symmetrical positioning concave stations 8-1, there is pincerlike half-round cross hole centering slide block 5 front end, there is positioning boss 5-1 rear end, centering slide block is equipped with removable contact 3, centering slide block 5 can slide in sliding chamber, when the positioning boss 5-1 of described 2 centering slide blocks 5 contacts with the positioning concave stations 8-1 in described sliding chamber, the front end of 2 centering slide blocks 5 just in be formed centrally the circular channel that footpath is always greater than box cupling diameter, passage respectively has box cupling to import the conical surface up and down, oil pipe 4 is centered in this passage, distance 2-3mm larger than tubing diameter now between 2 contacts 3 in left and right, oil pipe can freely pass through in described circular channel, the piston 2 of hydraulic cylinder is connected as a single entity by attaching nut 6 and centering slide block 5, hydraulic cylinder 1 is equipped with hydraulic control one-way valve 9, overflow valve 10 and pressure switch 7, hydraulic control one-way valve 9 plays pressure maintaining effect, overflow valve 10 plays pressure limiting effect, pressure switch 7 action when in-cylinder pressure reaches setting value, and constant open contact is closed, exportable switching signal.
When needs carry out box cupling detection, hydraulic cylinder 1 is under the driving of forward oil pressure, left and right centering slide block 5 pushes oil pipe 4 to well center to central slide, centering slide block 5 stops sliding after positioning boss 5-1 contacts with sliding chamber positioning concave stations 8-1, when tubing coupling is passed through, box cupling shoulder contacts with contact 3, promoting contact 3 drives piston 2 outward radial to move, pressure in hydraulic cylinder 1 raises, when overpressure switch 7 setup pressure value, send switching signal, this signal can be used for acousto-optic and to warn or as control signal.Hydraulic control one-way valve 9 pressure maintaining effects, overflow valve 10 can limit in-cylinder pressure within the scope of required pressure, and the setting pressure of overflow valve 10 is greater than the setting pressure of pressure switch 9, and the setting pressure of pressure switch 9 is greater than the pressure of hydraulic control system;
This probe adopts the mode of left and right pressure switch 7 constant open contact 12 serial connection, when only having box cupling to pass through, the constant open contact 12 of 2 pressure switches 7 in left and right could be all closed, export 1 effective control signal 11, avoid mistaking signal and leak the possibility of signaling, ensure that the accuracy that box cupling detects and reliability.
Claims (3)
1. a pressure-sensitive centering collar finder, it is characterized in that, comprise seal casinghousing, centering slide block, contact, piston, hydraulic cylinder, attaching nut, liquid control check valve, eduction valve and pressure switch, the cross section of level is had to be the sliding chamber of rectangle in the middle part of described seal casinghousing, chamber wall there is the positioning concave stations that 2 symmetrical, described sliding chamber is built with the symmetrical centering slide block in 2, left and right, described centering slip front has pincerlike half-round cross hole, there is positioning boss rear end, centering slide block is equipped with removable contact, centering slide block can slide in sliding chamber, after the positioning boss of 2, described left and right centering slide block contacts with the positioning concave stations in described sliding chamber, the front end of 2 centering slide blocks in be formed centrally the circular channel that footpath is always greater than box cupling diameter, passage respectively has box cupling to import the conical surface up and down, now, distance 2-3mm larger than tubing diameter between 2 contacts in left and right, oil pipe is centered in this passage, and can freely pass through.
2. pressure-sensitive centering collar finder according to claim 1, it is characterized in that each side there is 1 hydraulic cylinder, hydraulic cylinder piston is connected with centering slide block by attaching nut, and each hydraulic cylinder is provided with pressure switch, hydraulic control one-way valve and overflow valve.
3. pressure-sensitive centering collar finder according to claim 1 and 2, it is characterized in that, pressure switch constant open contact adopts the mode of serial connection to export control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420559742.3U CN204253019U (en) | 2014-09-19 | 2014-09-19 | Pressure-sensitive centering collar finder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420559742.3U CN204253019U (en) | 2014-09-19 | 2014-09-19 | Pressure-sensitive centering collar finder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204253019U true CN204253019U (en) | 2015-04-08 |
Family
ID=52957339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420559742.3U Expired - Fee Related CN204253019U (en) | 2014-09-19 | 2014-09-19 | Pressure-sensitive centering collar finder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204253019U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626046A (en) * | 2015-12-23 | 2016-06-01 | 西安秦森科技有限公司 | Coupling detection device |
| CN108049864A (en) * | 2017-12-21 | 2018-05-18 | 大连理工大学 | A kind of string collar detection device and its application method |
-
2014
- 2014-09-19 CN CN201420559742.3U patent/CN204253019U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626046A (en) * | 2015-12-23 | 2016-06-01 | 西安秦森科技有限公司 | Coupling detection device |
| CN108049864A (en) * | 2017-12-21 | 2018-05-18 | 大连理工大学 | A kind of string collar detection device and its application method |
| CN108049864B (en) * | 2017-12-21 | 2021-01-05 | 大连理工大学 | Pipe string coupling detection device and using method thereof |
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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 |
Granted publication date: 20150408 Termination date: 20180919 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |