CN204302442U - A kind of imaging device for corona detection - Google Patents
A kind of imaging device for corona detection Download PDFInfo
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- CN204302442U CN204302442U CN201420801590.3U CN201420801590U CN204302442U CN 204302442 U CN204302442 U CN 204302442U CN 201420801590 U CN201420801590 U CN 201420801590U CN 204302442 U CN204302442 U CN 204302442U
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Abstract
The utility model is applicable to optical image technology field, provide a kind of imaging device for corona detection, comprise pedestal, preposition lens barrel and rearmounted lens barrel, main lens and catoptron group is provided with in preposition lens barrel, principal reflection mirror and ultraviolet filter is provided with, day blind UV. Image Devices pedestal being also provided with visual light imaging device and can moving axially in rearmounted lens barrel; The middle part of main lens and principal reflection mirror offers the first through hole and the second through hole respectively, and catoptron group comprises the first reflecting surface and the second reflecting surface; The reflected light path of the second reflecting surface is provided with day blind UV. Image Devices, and visual light imaging device is arranged on the reflected light path of the first reflecting surface.The utility model have employed the light path system of the two spectrum of day blind Uv and visible light, make day blind ultraviolet band and visible light wave range imaging show simultaneously, thus the region of high-tension line corona discharge can be judged accurately, and compact conformation is lightweight, can be easy to realize portable operation.
Description
Technical field
The utility model belongs to optical image technology field, particularly relates to a kind of imaging device for corona detection.
Background technology
In electric system, dissociate, thus lose good insulation characterisitic and become conductor when high voltage power transmission voltage between lines exceedes certain value by causing the air height of conductive line surfaces, and then form electric discharge, this phenomenon is called corona.The generation of corona can cause huge harm to high-voltage electric power system, comprise electric loss of energy, the corrosion of electrical equipment and radio interference etc., therefore accurately detect the position of corona discharge and strong and weak the operation and maintenance of electric system to be had great significance.In corona discharge process, the spectrum of radiation covers ultraviolet, visible and infrared spectral coverage, its wavelength substantial scope is 200 ~ 400nm, because corona radiation spectral energy is weak, utilize the detection of visible and infrared spectral coverage to be subject to the interference of daylight and bias light, cannot realize detecting accurately.Consider that corona discharge can send the light of day blind ultraviolet band (240 ~ 280nm), and in daylight, wavelength is at the ultraviolet light content little (being almost equal to zero) of 240 ~ 280nm, so just can realize the monitoring to corona by the light detecting this wave band, and not by the interference of daylight with other bias lights.Prior art is sightless to most of background in the image of day blind ultraviolet band imaging, so in actual applications, still accurately cannot judge the region of high-tension line corona discharge, can not reach the requirement of corona detection.
Utility model content
The purpose of this utility model is to provide a kind of imaging device for corona detection, is intended to corona discharge and position carries out high efficient detection and compact conformation is portable.
The utility model realizes like this, a kind of imaging device for corona detection, comprise pedestal, the preposition lens barrel of the mutual socket be arranged on described pedestal and rearmounted lens barrel, main lens and catoptron group is provided with in described preposition lens barrel, principal reflection mirror and ultraviolet filter is provided with in described rearmounted lens barrel, the day blind UV. Image Devices described pedestal being also provided with visual light imaging device and can moving axially, described main lens, catoptron group, principal reflection mirror, ultraviolet filter and day blind UV. Image Devices from object space to image space successively coaxial setting;
The middle part of described main lens and principal reflection mirror offers the first through hole and the second through hole respectively, and described catoptron group comprises respectively towards the first reflecting surface and second reflecting surface of described first through hole and the second through hole; Described principal reflection mirror comprises the primary reflection surface that the light through described main lens can be reflexed to described second reflecting surface, the reflected light path of described second reflecting surface is provided with blind UV. Image Devices of described day, and described visual light imaging device is arranged on the reflected light path of described first reflecting surface.
As optimal technical scheme of the present utility model:
Described preposition lens barrel has the light hole supplying the light of described first reflective surface to pass through.
Described pedestal comprises upper layer bracket and lower floor support, and described rearmounted lens barrel is arranged in described upper layer bracket, and described lower floor support is provided with translation stage, and described translation stage is provided with the bearing for blind UV. Image Devices of fixing described day.
Between described first catoptron and visual light imaging device, be provided with the visible reflectance that the first reflecting surface can be launched to the reflector element of visual light imaging device, described reflector element comprises pitching and the adjustable plane mirror of deflection angle.
Described reflector element also comprises the catoptron regulating part be located on described pedestal, and to be installed on described catoptron regulating part and catoptron bearing for installing described plane mirror.
The front end of described rearmounted lens barrel is provided with the retainer plate for fixing described catoptron group, and the periphery of described retainer plate is connected with the barrel of described rearmounted lens barrel by some spokes.
Described retainer plate offers several threaded holes, and described catoptron group is fixed to its surface through described threaded hole top by jackscrew.
Described imaging device also comprises the window glass of the incident side being positioned at described main lens, and described window glass is fixed on the front end of described preposition lens barrel by the first trim ring, and is fixed by spacer ring and described main lens.
Described principal reflection mirror and ultraviolet filter are pressed abd fixed on the rear end of described rearmounted lens barrel 03 by the second trim ring.
Described day, blind UV. Image Devices adopted day blind ultraviolet ICCD, and described visual light imaging device adopts visible ray zoom camera.
The utility model have employed the light path system of the two spectrum of day blind Uv and visible light, make day blind ultraviolet band and visible light wave range imaging show simultaneously, make corona discharge and background environment high-visible in same image, thus the region of high-tension line corona discharge can be judged accurately, and compact conformation of the present invention, volume is little and lightweight, can be easy to realize portable operation, is suitable for the occasion such as high-tension line or high ferro line maintenance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the imaging device for corona detection that the utility model embodiment provides;
Fig. 2 is the structural representation of the base that the utility model embodiment provides;
Fig. 3 is the structural representation of the rearmounted lens barrel that the utility model embodiment provides;
Fig. 4 is the schematic appearance of the imaging device for corona detection that the utility model embodiment provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Below in conjunction with specific embodiment, specific implementation of the present utility model is described in detail:
With reference to figure 1, the utility model embodiment provides a kind of day blind ultraviolet imagery device, comprise pedestal 01, the preposition lens barrel 02 of the mutual socket be arranged on pedestal 01 and rearmounted lens barrel 03, main lens 04 and catoptron group 05 is provided with in preposition lens barrel 02, be provided with principal reflection mirror 06 and ultraviolet filter 07 in rearmounted lens barrel 03, main lens 04, catoptron group 05, principal reflection mirror 06, ultraviolet filter 07 and day blind UV. Image Devices 09 from object space to image space successively coaxial setting.In addition, the day blind UV. Image Devices 09 pedestal 01 being also provided with visual light imaging device 08 and can moving axially.The middle part of main lens 04 and principal reflection mirror 06 offers the first through hole 041 and the second through hole 061 respectively, catoptron group 05 comprises respectively towards the first reflecting surface and second reflecting surface of the first through hole 041 and the second through hole 061, specifically can be formed by the second catoptron 052 gummed of the first catoptron 051 of a column and planoconvex, wherein, first catoptron 051 of column is towards end face i.e. first reflecting surface of the first through hole 041, form an angle with optical axis L, the reflecting surface of the second catoptron 052 of planoconvex is the second reflecting surface.When processing technology can meet the demands, this catoptron group 05 can adopt a block of material to process.The region of principal reflection mirror 06 except the second through hole 061 is provided with primary reflection surface 062, light through main lens 04 can be reflexed to the second reflecting surface, the reflected light path of the second reflecting surface arranges day blind UV. Image Devices 09, and visual light imaging device 08 is arranged on the reflected light path of the first reflecting surface.In this device, main lens 04-principal reflection mirror the 06-the second reflecting surface-day, blind UV. Image Devices 09 formed day blind ultraviolet imagery light path, and main lens the 04-the first reflecting surface-visual light imaging device 08 forms visual light imaging light path.In the present embodiment, in order to make visible ray enter visual light imaging device 08 smoothly, a light hole 021 passed through for the reflected light of the first reflecting surface can be offered at preposition lens barrel 02.
The principle of work of this device is: after the incident main lens 04 of object space light beam, a part is passed through the entity part of main lens 04, invest principal reflection mirror 06, the second reflecting surface of catoptron group 05 is reflexed to by primary reflection surface 062, gone out by the second reflective surface again, through the second through hole 061 of principal reflection mirror 06, through ultraviolet filter 07 through ultraviolet light, in final directive day blind UV. Image Devices 09, obtain day blind ultraviolet image.Another part light, through the first through hole 041 of main lens 04, by the first reflective surface of catoptron group 05 to visual light imaging device 08, obtains visible images.Day blind ultraviolet image and visible images carry out merging rear formation one width and both clearly can present corona discharge phenomenon, the image of corona generation background can be shown again, make corona discharge and background environment high-visible in same image, and then judge the intensity of corona quickly and accurately and position occurs, a series of impacts of pre-anticorona generation can be shifted to an earlier date by modes such as maintenances, very large help is provided to the line upkeep work of line data-logging personnel.And this apparatus structure is compact, and resolution is high, be applicable to remote contactless corona detection.
In the present embodiment, day blind ultraviolet imagery light path and visual light imaging light path be varifocal light path.Day blind UV. Image Devices 09 can adopt day blind ultraviolet ICCD, can axially translation is to realize zoom, and visual light imaging device 08 can adopt visible ray zoom camera, can auto-focusing, and then can simplify the lens construction of system.
With further reference to Fig. 1, day blind UV. Image Devices 09 can realize it by a motorized precision translation stage 10 and move axially, this motorized precision translation stage 10 is arranged on pedestal 01, day, blind UV. Image Devices 09 was connected on the bearing 11 of motorized precision translation stage 10 end, and the structure of reinforcement is have employed on the both sides of bearing 11, prevent the axial inclination of day blind UV. Image Devices 09 to ensure right alignment.Change the distance between image planes and camera lens by controlling the flexible of motorized precision translation stage 10 thus achieve ultraviolet focusing function.
With reference to figure 3, consider that placing motorized precision translation stage 10 at rearmounted lens barrel 03 rear can take larger space, therefore pedestal 01 is designed to levels structure, comprise upper layer bracket 011 and lower floor support 012, rearmounted lens barrel 03 is arranged on the groove of upper layer bracket 011, rearmounted lens barrel 03 inside has two threaded holes 0311, this groove also has two concentric through holes, be fixed on pedestal 01 by screw by rearmounted lens barrel 03, preposition lens barrel 022 is socketed on rearmounted lens barrel 03 coaxial with rearmounted lens barrel 03.Motorized precision translation stage 10 is arranged on lower floor support 012, and all the other inoperative parts of pedestal 01 are taked to empty process, weight reduction.
In the present embodiment, the incident side of this main lens 04 is provided with window glass 12, and this window glass 12 is fixed on the front end of preposition lens barrel 02 by the first trim ring 13, and keeps the distance between main lens 04 by spacer ring 14, and is fixed by main lens 04.Principal reflection mirror 06 and ultraviolet filter 07 are pressed abd fixed on the rear end of rearmounted lens barrel 03 by the second trim ring 15, and the second trim ring 15 has step groove, and the groove that wherein diameter is larger and principal reflection mirror 06 match, and the groove that diameter is less and ultraviolet filter 07 match.
With further reference to Fig. 2, the front end of rearmounted lens barrel 03 is provided with the retainer plate 031 for stationary mirror group 05, and this retainer plate 031 has step groove, adopts the 3rd trim ring 16 first catoptron 053 and the second catoptron 054 to be fixed in step groove.The periphery of retainer plate 031 is connected with the barrel of rearmounted lens barrel 03 by some spokes 032.Spoke 032 structure ensures that system has enough light to enter into the day blind UV. Image Devices 09 at rear, ensures the image quality of UV light path.Retainer plate 031 offers several threaded holes 0311, and catoptron group 05 is fixed through threaded hole 0311 pushes up to its surface by jackscrew.
With further reference to Fig. 1 and Fig. 4, reflector element can be set between the first catoptron 053 and visual light imaging device 08, the visible reflectance launched by first reflecting surface 051 is to visual light imaging device 08, and reflector element comprises plane mirror 17, its pitching and deflection angle adjustable.By regulating the pitching of plane mirror 17 can ensure that two width image f iotaeld-of-view are consistent with deflection angle, and then complete the front field of view (fov) registration to two width images of image co-registration.Concrete, the side of pedestal 01 has one to be the tangent plane of 45 degree with horizontal aspect, tangent plane is provided with catoptron regulating part 18 and is fixed on pedestal 01 by two screws on this step side of 45 degree, catoptron regulating part 18 is provided with catoptron bearing 19, plane mirror 17 is arranged in the groove of catoptron bearing 19, and fixed by the 4th trim ring 20, this plane mirror 17 regulates its pitching and beat by catoptron regulating part 18.
With further reference to Fig. 4, in order to len, a light shield 21 can also be increased in preposition lens barrel 02 front end, be interfixed by screw thread.
In the present embodiment except various optical lens, visual light imaging device 08, day blind UV. Image Devices 09 and motorized precision translation stage 10 except, the structure of all machining all adopts high rigidity light aluminum alloy LY12-CZ, the rigidity of total and the stability of optical system can be ensured, again reduce the quality of whole system in addition.
The utility model have employed the support platform of industrial computer as software and hardware, only need add that whole system just can become one by LCDs, shell and battery powdered device, have good portability, be conducive to staff and carry out Site Detection.
The utility model have employed the light path system of the two spectrum of day blind Uv and visible light, make day blind ultraviolet band and visible light wave range imaging show simultaneously, and there is the automatic focusing of UV light path and the automatic focusing function of Visible optical trains, thus the region of high-tension line corona discharge can be judged accurately, and compact conformation of the present invention, volume is little and lightweight, can be easy to realize portable operation, is suitable for the occasion such as high-tension line or high ferro line maintenance.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. the imaging device for corona detection, it is characterized in that, comprise pedestal, the preposition lens barrel of the mutual socket be arranged on described pedestal and rearmounted lens barrel, main lens and catoptron group is provided with in described preposition lens barrel, principal reflection mirror and ultraviolet filter is provided with in described rearmounted lens barrel, the day blind UV. Image Devices described pedestal being also provided with visual light imaging device and can moving axially, described main lens, catoptron group, principal reflection mirror, ultraviolet filter and day blind UV. Image Devices from object space to image space successively coaxial setting;
The middle part of described main lens and principal reflection mirror offers the first through hole and the second through hole respectively, and described catoptron group comprises respectively towards the first reflecting surface and second reflecting surface of described first through hole and the second through hole; Described principal reflection mirror comprises the primary reflection surface that the light through described main lens can be reflexed to described second reflecting surface, the reflected light path of described second reflecting surface is provided with blind UV. Image Devices of described day, and described visual light imaging device is arranged on the reflected light path of described first reflecting surface.
2. imaging device as claimed in claim 1, is characterized in that, described preposition lens barrel has the light hole supplying the light of described first reflective surface to pass through.
3. imaging device as claimed in claim 1, it is characterized in that, described pedestal comprises upper layer bracket and lower floor support, and described rearmounted lens barrel is arranged in described upper layer bracket, described lower floor support is provided with translation stage, and described translation stage is provided with the bearing for blind UV. Image Devices of fixing described day.
4. the imaging device as described in claim 1,2 or 3, it is characterized in that, between described first catoptron and visual light imaging device, be provided with the visible reflectance that the first reflecting surface can be launched to the reflector element of visual light imaging device, described reflector element comprises pitching and the adjustable plane mirror of deflection angle.
5. imaging device as claimed in claim 4, it is characterized in that, described reflector element also comprises the catoptron regulating part be located on described pedestal, and to be installed on described catoptron regulating part and catoptron bearing for installing described plane mirror.
6. the imaging device as described in claim 1,2 or 3, is characterized in that, the front end of described rearmounted lens barrel is provided with the retainer plate for fixing described catoptron group, and the periphery of described retainer plate is connected with the barrel of described rearmounted lens barrel by some spokes.
7. imaging device as claimed in claim 6, it is characterized in that, described retainer plate offers several threaded holes, and described catoptron group is fixed to its surface through described threaded hole top by jackscrew.
8. the imaging device as described in claim 1,2 or 3, it is characterized in that, described imaging device also comprises the window glass of the incident side being positioned at described main lens, and described window glass is fixed on the front end of described preposition lens barrel by the first trim ring, and is fixed by spacer ring and described main lens.
9. the imaging device as described in claim 1,2 or 3, is characterized in that, described principal reflection mirror and ultraviolet filter are pressed abd fixed on the rear end of described rearmounted lens barrel by the second trim ring.
10. the imaging device as described in claim 1,2 or 3, is characterized in that, described day, blind UV. Image Devices adopted day blind ultraviolet ICCD, and described visual light imaging device adopts visible ray zoom camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420801590.3U CN204302442U (en) | 2014-12-16 | 2014-12-16 | A kind of imaging device for corona detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420801590.3U CN204302442U (en) | 2014-12-16 | 2014-12-16 | A kind of imaging device for corona detection |
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| CN204302442U true CN204302442U (en) | 2015-04-29 |
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| CN201420801590.3U Active CN204302442U (en) | 2014-12-16 | 2014-12-16 | A kind of imaging device for corona detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106371189A (en) * | 2016-10-31 | 2017-02-01 | 中国科学院西安光学精密机械研究所 | Mechanical structure for turning optical path optical system |
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2014
- 2014-12-16 CN CN201420801590.3U patent/CN204302442U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106371189A (en) * | 2016-10-31 | 2017-02-01 | 中国科学院西安光学精密机械研究所 | Mechanical structure for turning optical path optical system |
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