CN101551237A - Imaging mechanism used in photoelectric detector of oil tube external thread - Google Patents
Imaging mechanism used in photoelectric detector of oil tube external thread Download PDFInfo
- Publication number
- CN101551237A CN101551237A CNA2009100721080A CN200910072108A CN101551237A CN 101551237 A CN101551237 A CN 101551237A CN A2009100721080 A CNA2009100721080 A CN A2009100721080A CN 200910072108 A CN200910072108 A CN 200910072108A CN 101551237 A CN101551237 A CN 101551237A
- Authority
- CN
- China
- Prior art keywords
- lens
- lens barrel
- oil tube
- external thread
- photoelectric detector
- 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.)
- Pending
Links
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention provides an imaging mechanism used in photoelectric detector of oil tube external thread. The invention mainly settles a problem that the prior photoelectric detector of oil tube external thread can not measure the large-diameter oil tube caused by the insufficient visual field of inner optical imaging mechanism. The invention is characterized in that a light source seat which is positioned in the enclosure, an oil tube positioning frame, a conical connecting lens barrel, a rectangular connecting lens barrel and a charge coupled device image sensor which is provided with an installing seat are sequentially connected. A reflector is installed in a chamber at the connection part between oil tube positioning frame and the conical connecting lens barrel. A lens is installed in the chamber at the connection part between the conical connecting lens barrel and the rectangular connecting lens barrel. The imaging mechanism adopts the charge coupled device image sensor which is provided with a high-precision planar array as an image sensing component. After the light splitting and light combining techniques are applied on the photoelectric detector of oil tube external thread, the measuring to large-diameter oil tube can be realized.
Description
Technical field:
A kind of optical imagery mechanism that the present invention relates to use in the oil recovery field, oil field relates to a kind of optical imagery mechanism that is applied on the photoelectric detector that the oil tube external thread geometric parameter is detected specifically.
Background technology:
Oil pipe is the important equipment of oil-field development indispensability, under tension-La cyclic loading effect in its underground work process, make the tubing thread root produce fatigue crack, finally cause oil pipe break to lose efficacy, bring many difficulties not only for the ordinary production management in oil field, and the increase of maintainability measure workload, crude oil cost increase, economic benefit are reduced.Any irregular oil tube external thread pattern all can cause the special variation of connection of thread stress field as the tooth depth of screw thread, tapering, tooth form angle, pitch etc., makes the local high strain concentrating district that produces of screw thread, forms formation of crack.Photoelectric detector of oil tube external thread is exactly the important instrument that at present situation of change of the oil tube external thread parameter that is lowered to or trips out is detected, it has had raising by a relatively large margin according to existing contact screw thread fine measuring instrument at aspects such as measurement range, measuring accuracy.But, find after the application by a period of time:, when detecting the bigger oil pipe of some diameters, will occur because the problem that the visual field deficiency is difficult to measure if this photoelectric detector adopts conventional instrument internal optical imagery mechanism.Therefore, lack a kind of optical imagery mechanism and become the key factor that the restriction photoelectric detector of oil tube external thread obtains widespread adoption with big visual field.
Summary of the invention:
In order to solve existing photoelectric detector of oil tube external thread because of the not enough problem that can't measure some large diameter oil pipes in its internal optics imaging mechanism visual field, the invention provides and a kind ofly develop specially, be used in the imaging mechanism on the photoelectric detector of oil tube external thread, this imaging mechanism adopts the ccd image sensor with high precision face battle array as image sensing device, utilize beam split, close optical tech, after being applied on the photoelectric detector of oil tube external thread, can realize measurement to some major diameter oil pipes.
Technical scheme of the present invention is: this kind is used in the imaging mechanism on the photoelectric detector of oil tube external thread, comprise placing light source base, oil pipe locating rack, taper connection lens barrel, rectangle connection lens barrel that connects successively in the case and the ccd image sensor that has mount pad, said modules has same central axis after connecting.Wherein, the built-in led array light source of described light source base, the cavity of described oil pipe locating rack and taper connection lens barrel connection place is built-in with corner cube mirror and two plane mirrors, described corner cube mirror is positioned on the central axis, described two plane mirrors lay respectively at the upper and lower end of described corner cube mirror, and its plane minute surface parallels with two right angle minute surfaces of described corner cube mirror respectively.Described taper connection lens barrel is connected the lens barrel connection place with rectangle cavity is built-in with preceding group positive lens and preceding group of negative lens, and the cavity that described rectangle connects lens barrel and ccd image sensor mount pad connection place is built-in with back group positive lens, glues together positive negative lens and back group negative lens; The central line of lens of group positive lens, preceding group of negative lens and back group positive lens, the positive negative lens of gummed and back group negative lens coincides before above-mentioned.
The present invention has following beneficial effect: the present invention adopts a ccd image sensor with high precision face battle array as image sensing device, during measurement, the image of lower limb passes through mirror reflects respectively on the oil pipe, be imaged on the ccd image sensor target surface through convex lens again, promptly only lower limb on the useful screw thread of parameter detecting is carried out imaging, utilize beam split, combine light into the picture and the image mosaic technology of instrument internal and just can solve the problem of visual field deficiency when measuring the bigger oil pipe of diameter, thereby realize some large diameter oil pipes are measured.And can reduce system configuration simultaneously, reduced the manufacturing cost of instrument.In addition, this imaging system, on lighting source, adopted the led array light source, it has light source utilization factor height, the uniform characteristics in visual field, make tested screw thread obtain the irradiation of approximate parallel array light source, guarantee that whole optical path can eliminate the noise that parasitic light noise and industry spot infrared radiation cause well.After using this imaging mechanism, this instrument can once be measured pitch, thread height, tooth form angle, middle footpath and five parameters of tapering of screw thread simultaneously, and can finish the tubing thread measurement automatically and declare useless work according to the useless condition of setting of declaring.
Description of drawings:
Fig. 1 is a structure cut-open view of the present invention.
Fig. 2 is a schematic diagram of the present invention.
Fig. 3 is the corner cube mirror physical dimension figure in specific embodiment of the present invention.
Fig. 4 is the plane mirror physical dimension figure in specific embodiment of the present invention.
Fig. 5 is the lens construction location drawing in specific embodiment of the present invention.
Fig. 6 is preceding group of positive lens physical dimension figure in specific embodiment of the present invention.
Fig. 7 is preceding group of negative lens physical dimension figure in specific embodiment of the present invention.
Fig. 8 is back group of positive lens physical dimension figure in specific embodiment of the present invention.
Fig. 9 is back group of negative lens physical dimension figure in specific embodiment of the present invention.
Figure 10 is the gummed positive lens physical dimension figure in specific embodiment of the present invention.
Figure 11 is the gummed negative lens physical dimension figure in specific embodiment of the present invention.
1-light source base among the figure, 2-case, 3-oil pipe locating rack; the 4-plane mirror, 5-corner cube mirror, 6-taper connection lens barrel; group positive lens before the 7-; group negative lens before the 8-, the 9-rectangle connects lens barrel, organizes positive lens behind the 10-; 11-glues together positive negative lens; organize negative lens behind the 12-, 13-ccd image sensor, 14-plane protection lens.
Embodiment:
The invention will be further described below in conjunction with accompanying drawing:
Fig. 1 is a structure cut-open view of the present invention, as shown in the figure, this kind of imaging mechanism that is used on the photoelectric detector of oil tube external thread, comprise placing light source base 1, oil pipe locating rack 3, taper connection lens barrel 6, rectangle connection lens barrel 9 that connects successively in the case 2 and the ccd image sensor 13 that has mount pad, said modules has same central axis after connecting.Wherein, described light source base 1 built-in led array light source, described oil pipe locating rack 3 is built-in with corner cube mirror 5 and two plane mirrors 4 with the cavity of taper connection lens barrel 6 connection places, described corner cube mirror is positioned on the central axis, described two plane mirrors lay respectively at the upper and lower end of described corner cube mirror, and its plane minute surface parallels with two right angle minute surfaces of described corner cube mirror respectively.Described taper connection lens barrel 6 is connected lens barrel 9 connection places with rectangle cavity is built-in with preceding group positive lens 7 and preceding group of negative lens 8, the cavity that described rectangle connects lens barrel 9 and ccd image sensor mount pad connection place is built-in with back group positive lens 10, the positive negative lens 11 of gummed and back group negative lens 12, above-mentioned before the central line of lens of group positive lens 7, preceding group of negative lens 8 and back group positive lens 10, the positive negative lens 11 of gummed and back group negative lens 12 coincide.In addition, for increasing protective effect, can in the cavity of described oil pipe locating rack 3 and taper connection lens barrel 6 connection places, be positioned at corner cube mirror 5 and be equipped with plane protection lens 14 before whole imaging mechanism.Fig. 3～Figure 11 is the actual various physical dimensions that adopted in specific embodiment of the present invention.
What Fig. 2 showed is the principle of work of the mechanism of optical imagery described in the present invention, during instrument work, measured oil pipe thread material object is placed on the oil pipe locating rack 3, provide even source of parallel light by the led array light-source illuminating system, be radiated on the oil pipe material object, by corner cube mirror 5 and two plane mirror 4 beam split, be truncated on the tubing thread, following two threaded female line profiles, again by preceding group of positive lens 7 afterwards, preceding group negative lens 8 and back group positive lens 10, glue together positive negative lens 11 and back group negative lens 12 closes light, carry out image mosaic and image on the target surface of ccd image sensor 13.After this after the image acquisition and digital conversion circuit processing of resulting electric signal in instrument, at last the graphical information that is intercepted is carried out medium filtering, binaryzation and emptied boundary treatment by computing machine, to extract the sub-pixel edge point, the computing that carries out curve fitting of double thread contour edge point finally provides and measures numerical value and result of determination.
Claims (2)
1, a kind of imaging mechanism that is used on the photoelectric detector of oil tube external thread, comprise placing light source base (1), oil pipe locating rack (3), taper connection lens barrel (6), rectangle connection lens barrel (9) that connects successively in the case (2) and the ccd image sensor (13) that has mount pad, said modules has same central axis after connecting;
Wherein, the built-in led array light source of described light source base (1);
Described oil pipe locating rack (3) is built-in with corner cube mirror (5) and two plane mirrors (4) with the cavity of taper connection lens barrel (6) connection place, described corner cube mirror is positioned on the central axis, described two plane mirrors lay respectively at the upper and lower end of described corner cube mirror, and its plane minute surface parallels with two right angle minute surfaces of described corner cube mirror respectively;
The cavity that group positive lens (7) and preceding group of negative lens (8) before described taper connection lens barrel (6) is connected lens barrel (9) connection place with rectangle cavity is built-in with, described rectangle connect lens barrel (9) and ccd image sensor mount pad connection place is built-in with back group positive lens (10), glue together positive negative lens (11) and after organize negative lens (12);
Group positive lens (7), preceding group of negative lens (8) and back group positive lens (10) before above-mentioned, glue together the central line of lens of positive negative lens (11) and back organizing negative lens (12) and coincide.
2, a kind of imaging mechanism that is used on the photoelectric detector of oil tube external thread according to claim 1; it is characterized in that: in the cavity of described oil pipe locating rack (3) and taper connection lens barrel (6) connection place, be positioned at corner cube mirror (5) and be equipped with plane protection lens (14) before.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100721080A CN101551237A (en) | 2009-05-20 | 2009-05-20 | Imaging mechanism used in photoelectric detector of oil tube external thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100721080A CN101551237A (en) | 2009-05-20 | 2009-05-20 | Imaging mechanism used in photoelectric detector of oil tube external thread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101551237A true CN101551237A (en) | 2009-10-07 |
Family
ID=41155608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100721080A Pending CN101551237A (en) | 2009-05-20 | 2009-05-20 | Imaging mechanism used in photoelectric detector of oil tube external thread |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101551237A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023350A (en) * | 2010-12-23 | 2011-04-20 | 大连艾科科技开发有限公司 | Fixed structure of coupling lens in microminiature photoelectric encapsulation shell cavity |
| CN102155915A (en) * | 2010-12-31 | 2011-08-17 | 东莞康视达自动化科技有限公司 | Online multi-band optical size detection method and system |
| CN101813946B (en) * | 2009-02-19 | 2011-11-16 | 中国科学院自动化研究所 | Automatic object distance adjusting method and device of imaging system |
| CN103438827A (en) * | 2013-08-19 | 2013-12-11 | 电子科技大学 | Method for detecting threaded area peak line of screw |
| CN106441127A (en) * | 2016-08-31 | 2017-02-22 | 洞头默克蒂森工业自动化有限公司 | Tubing diameter and surface recess-protrusion detector |
| CN106969717A (en) * | 2016-12-29 | 2017-07-21 | 北方民族大学 | Symmetrical beam bridge-type is from stabilized laser measurement diameter system and its scaling method, measuring method |
-
2009
- 2009-05-20 CN CNA2009100721080A patent/CN101551237A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813946B (en) * | 2009-02-19 | 2011-11-16 | 中国科学院自动化研究所 | Automatic object distance adjusting method and device of imaging system |
| CN102023350A (en) * | 2010-12-23 | 2011-04-20 | 大连艾科科技开发有限公司 | Fixed structure of coupling lens in microminiature photoelectric encapsulation shell cavity |
| CN102155915A (en) * | 2010-12-31 | 2011-08-17 | 东莞康视达自动化科技有限公司 | Online multi-band optical size detection method and system |
| CN102155915B (en) * | 2010-12-31 | 2013-01-23 | 东莞科视自动化科技有限公司 | Online multi-band optical size detection method and system |
| CN103438827A (en) * | 2013-08-19 | 2013-12-11 | 电子科技大学 | Method for detecting threaded area peak line of screw |
| CN103438827B (en) * | 2013-08-19 | 2016-01-13 | 电子科技大学 | The detection method of the threaded portion peak line of screw |
| CN106441127A (en) * | 2016-08-31 | 2017-02-22 | 洞头默克蒂森工业自动化有限公司 | Tubing diameter and surface recess-protrusion detector |
| CN106441127B (en) * | 2016-08-31 | 2019-02-26 | 洞头默克蒂森工业自动化有限公司 | A kind of pipe diameter and concave-convex surface detector |
| CN106969717A (en) * | 2016-12-29 | 2017-07-21 | 北方民族大学 | Symmetrical beam bridge-type is from stabilized laser measurement diameter system and its scaling method, measuring method |
| CN106969717B (en) * | 2016-12-29 | 2022-12-20 | 北方民族大学 | Calibration method and measurement method of symmetrical optical bridge type self-stabilizing laser diameter measuring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101551237A (en) | Imaging mechanism used in photoelectric detector of oil tube external thread | |
| CN102914263B (en) | Multi-camera image splicing-based automatic workpiece detection device | |
| CN204101008U (en) | A kind of take laser as the high precision long distance CCD twin shaft autocollimator of light source | |
| CN104075671B (en) | A kind of secondary imaging big visual field photoelectric auto-collimator | |
| CN204831220U (en) | Calcirm -fluoride optical flat two sides depth of parallelism high accuracy testing arrangement | |
| CN201589753U (en) | Detection device of large caliber optical element subsurface defect | |
| CN105716528A (en) | Oil pipe thread size parameter detection method and device | |
| CN203405174U (en) | A machine vision on-machine measuring system equipped with backlight sources | |
| CN103499355A (en) | Laser demarcation device calibration system | |
| CN102589484A (en) | Autocollimation indication error detection method and device using same | |
| CN108759664A (en) | A kind of nuclear fuel rod size detecting method and system based on telecentric optics | |
| CN115790450A (en) | Oil pipe coupling internal thread parameter detection system and method based on double plane mirrors | |
| CN203069531U (en) | Device for detecting surface defect of transparent optical element | |
| CN107607050A (en) | Laser thickness measuring apparatus | |
| CN204479492U (en) | Optical element surface flaw inspection device | |
| CN1204046A (en) | Optical contact measuring method and miniature three-dimensional measuring head using the same | |
| CN203672320U (en) | Image measuring instrument | |
| CN103411558B (en) | A kind of angular spectrum scanning confocal microstructure measuring device of illumination array formula and method | |
| CN102735220A (en) | Long-focus large-field-of-view camera focal plane resetting method | |
| CN206772245U (en) | A kind of lens eccentricity degree detector | |
| CN216115886U (en) | Threaded hole inner diameter circle number and quality detection device | |
| CN206695761U (en) | Utilize the gear projection type measuring device of computer | |
| CN201159638Y (en) | Testing device for size and concentricity of optical fiber insertion core inside and outside circularity | |
| CN104296652A (en) | Optical measuring head based on discrete rotation trigonometry | |
| CN108362210A (en) | Simple lens laser displacement gauge head with linear structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20091007 |