CN103018340A - Scanning frame for TOFD detection of minor-diameter thick-wall equipment - Google Patents
Scanning frame for TOFD detection of minor-diameter thick-wall equipment Download PDFInfo
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- CN103018340A CN103018340A CN2012105706869A CN201210570686A CN103018340A CN 103018340 A CN103018340 A CN 103018340A CN 2012105706869 A CN2012105706869 A CN 2012105706869A CN 201210570686 A CN201210570686 A CN 201210570686A CN 103018340 A CN103018340 A CN 103018340A
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Abstract
The invention discloses a scanning frame for TOFD detection of minor-diameter thick-wall equipment, and belongs to the field of weld nondestructive detection equipment; the structure comprises a T-shaped main frame, a C-shaped front wheel support, and C-shaped back wheel support; the bottom end of the main frame is provided with a main magnetic wheel; the front wheel support and the back wheel support are respectively disposed at the front and back side of the center of a main frame crossbeam; the connection ends of both the front wheel support and the back wheel support have a gear structure, and are engaged together with each other; the bottom end of the front side of the front wheel support is provided with a front magnetic wheel, and the bottom end of the back side of the back wheel support is provided with a back magnetic wheel. The invention has the characteristics of reasonable design, simple structure, easy processing, convenient application, accurate detection, high working efficiency, and the like; because the adopted front and the back support can be adjusted synchronously, TOFD detection of equipment with different external diameters can be realized; especially for radial, axial welds of minor-diameter thick-wall equipment, the scanning frame with the three-wheel structure can realize accurate detection of linear welds.
Description
Technical field
The present invention relates to weld seam non-destructive detecting device field, specifically a kind of minor diameter heavy wall equipment TOFD detects scanning frame.
Background technology
Time Of Flight Diffraction (TOFD) ultrasonic wave diffraction time difference method, the diffraction energy that to be a kind of dependence obtain from " the end angle " and " end points " of test specimen inner structure to be checked (mainly referring to defective) detects the method for defective, is used for the detection of defective, quantitatively and the location.Scanning frame is the important component part of TOFD checkout equipment, and effect is static probe and mobile on the spare part surface.Present scanning frame on the market mostly is four-wheel fixed beam type structure, is mainly used in the detection of downhand welding and major diameter press device girth joint, and this type of scanning frame can not be realized the good fit to the small-diameter apparatus surface, so be not suitable for the detection of small-diameter apparatus.
The patent No. is " 2007100641231 ", the patent content of patent name " spiral weld manual checking frame " has been put down in writing a kind of four-wheel scanning frame, this scanning frame usable range is limited, can only be to scanning in the special diameter scope, to the equipment such as small diameter thick-walled vessel radially, axially during the weld seam scanning, the problem that exists contact closely maybe can't not contact; In addition, this scanning frame can only detect device outer surface, can't realize the effective detection to the equipment inside surfaces such as container conduit or other concave surfaces.
Summary of the invention
Technical assignment of the present invention is for above weak point, provide a kind of easy to use, detect accurately, the minor diameter heavy wall equipment TOFD of high efficiency detects scanning frame.
The technical solution adopted for the present invention to solve the technical problems is: this detection scanning frame comprise "T"-shaped body frame, " C " and shape front-wheel support and " C " rear wheel support of shape, the bottom of described body frame is provided with main magnet-wheel; The both sides, front and back of body frame crossbeam center are respectively arranged with front-wheel support and rear wheel support, and the link of front-wheel support and rear wheel support all is gear structure, and intermeshing linking together; The bottom, front side of front-wheel support is provided with front magnet-wheel, and the rear side bottom of rear wheel support is provided with rear magnet-wheel.
Be provided with screw rod on the crossbeam of described body frame, be symmetrically arranged with two sections screw threads with respect to body frame crossbeam center on the screw rod, the rotation direction of two sections screw threads is opposite, the probe bracket that has been rotatably connected on every section screw thread, and two probe brackets are symmetrical arranged with respect to body frame crossbeam center; The bottom of probe bracket is provided with the probe compressor arm, and probe is installed in the bottom of probe compressor arm.
Junction between described probe compressor arm and the probe bracket is provided with holddown spring.
The link of described front-wheel support and rear wheel support each side be provided with a clamping piece, two clamping pieces link together by two coupling shafts, two coupling shafts pass respectively the center of circle of the link gear structure of front-wheel support and rear wheel support; Wherein be provided with two hold-down bolts on the clamping piece of a side, a hold-down bolt contacts with front-wheel support, and another hold-down bolt contacts with rear wheel support.
On the body frame of described main magnet-wheel top displacement recorder is installed.
Minor diameter heavy wall equipment TOFD of the present invention detects scanning frame and is compared with existing technology, have reasonable in design, simple in structure, be easy to processing, easy to use, detect accurately, the characteristics such as work efficiency is high, because what adopt is that front and back support and the support degree of amplitude modulation that can adjust synchronously are larger, carry out TOFD and detect so can be implemented in the surfaces externally and internally of different-diameter equipment, and the design of C ellbeam front and back support can be avoided situation about can't fit because support and equipment surface are interfered; Especially to different-diameter minor diameter heavy wall equipment radially, axial weld seam, the scanning frame of this tricycle structure can be realized the accurate detection of linear weld seam.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Accompanying drawing 1 is the structural representation that minor diameter heavy wall equipment TOFD detects scanning frame.
Accompanying drawing 2 is the vertical view of accompanying drawing 1.
Among the figure: 1, body frame, 2, front-wheel support, 3, rear wheel support, 4, front magnet-wheel, 5, rear magnet-wheel, 6, main magnet-wheel, 7, clamping piece, 8, coupling shaft, 9, hold-down bolt, 10, handle, 11, probe bracket, 12, the probe compressor arm, 13, holddown spring, 14, screw rod, 15, screw thread, 16, displacement recorder.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
A kind of minor diameter heavy wall equipment TOFD of the present invention detects scanning frame, its structure comprise "T"-shaped body frame 1, " C " front-wheel support 2 Hes of shape " C " rear wheel support 3 of shape, the bottom of described body frame 1 is provided with main magnet-wheel 6, on the body frame 1 of main magnet-wheel 6 tops displacement recorder 16 is installed; The both sides, front and back of body frame 1 crossbeam center are respectively arranged with front-wheel support 2 and rear wheel support 3, and the link of front-wheel support 2 and rear wheel support 3 all is gear structure, and intermeshing linking together; The bottom, front side of front-wheel support 2 is provided with front magnet-wheel 4, and the rear side bottom of rear wheel support 3 is provided with rear magnet-wheel 5; This structure can be regulated the height of front magnet-wheel 4 and rear magnet-wheel 5, thereby guarantees in the testing process good fit with minor diameter heavy wall equipment surface.
Be provided with screw rod 14 on the crossbeam of described body frame 1, be symmetrically arranged with two sections screw threads 15 with respect to body frame 1 crossbeam center on the screw rod 14, the rotation direction of two sections screw threads 15 is opposite, a probe bracket 11 has been rotatably connected on every section screw thread 15, two probe brackets 11 are symmetrical arranged with respect to body frame 1 crossbeam center, rotary screw 14 can be realized relatively moving of two probe brackets 11, need not adjusting one by one; The bottom of probe bracket 11 is provided with probe compressor arm 12, probe is installed in the bottom of probe compressor arm 12, junction between probe compressor arm 12 and the probe bracket 11 is provided with holddown spring 13, and holddown spring 13 is given all the time probe compressor arm 12 and visited first downward pressure.
The link of described front-wheel support 2 and rear wheel support 3 each side be provided with a clamping piece 7, two clamping pieces 7 link together by two coupling shafts 8, and two coupling shafts 8 pass respectively the center of circle of the link gear structure of front-wheel support 2 and rear wheel support 3; Wherein be provided with 9, one hold-down bolts 9 of two hold-down bolts on the clamping piece 7 of a side and contact with front-wheel support 2, another hold-down bolt 9 contacts with rear wheel support 3.
It is very simple and convenient that a kind of minor diameter heavy wall equipment TOFD of the present invention detects its processing and fabricating of scanning frame, and processing and fabricating gets final product shown in the by specification accompanying drawing.
Except the described technical characterictic of instructions, be the known technology of those skilled in the art.
Claims (5)
1. a minor diameter heavy wall equipment TOFD detects scanning frame, comprise "T"-shaped body frame, " C " and shape front-wheel support and " C " rear wheel support of shape, it is characterized in that the bottom of described body frame is provided with main magnet-wheel; The both sides, front and back of body frame crossbeam center are respectively arranged with front-wheel support and rear wheel support, and the link of front-wheel support and rear wheel support all is gear structure, and intermeshing linking together; The bottom, front side of front-wheel support is provided with front magnet-wheel, and the rear side bottom of rear wheel support is provided with rear magnet-wheel.
2. minor diameter heavy wall equipment TOFD according to claim 1 detects scanning frame, it is characterized in that, be provided with screw rod on the crossbeam of described body frame, be symmetrically arranged with two sections screw threads with respect to body frame crossbeam center on the screw rod, the rotation direction of two sections screw threads is opposite, the probe bracket that has been rotatably connected on every section screw thread, two probe brackets are symmetrical arranged with respect to body frame crossbeam center; The bottom of probe bracket is provided with the probe compressor arm, and probe is installed in the bottom of probe compressor arm.
3. minor diameter heavy wall equipment TOFD according to claim 2 detects scanning frame, it is characterized in that the junction between described probe compressor arm and the probe bracket is provided with holddown spring.
4. minor diameter heavy wall equipment TOFD according to claim 1 detects scanning frame, it is characterized in that, the link of described front-wheel support and rear wheel support each side be provided with a clamping piece, two clamping pieces link together by two coupling shafts, and two coupling shafts pass respectively the center of circle of the link gear structure of front-wheel support and rear wheel support; Wherein be provided with two hold-down bolts on the clamping piece of a side, a hold-down bolt contacts with front-wheel support, and another hold-down bolt contacts with rear wheel support.
5. minor diameter heavy wall equipment TOFD according to claim 1 detects scanning frame, it is characterized in that, on the body frame of described main magnet-wheel top displacement recorder is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210570686.9A CN103018340B (en) | 2012-12-26 | 2012-12-26 | Scanning frame for TOFD detection of minor-diameter thick-wall equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210570686.9A CN103018340B (en) | 2012-12-26 | 2012-12-26 | Scanning frame for TOFD detection of minor-diameter thick-wall equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103018340A true CN103018340A (en) | 2013-04-03 |
| CN103018340B CN103018340B (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210570686.9A Expired - Fee Related CN103018340B (en) | 2012-12-26 | 2012-12-26 | Scanning frame for TOFD detection of minor-diameter thick-wall equipment |
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| CN (1) | CN103018340B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203633A (en) * | 2015-10-26 | 2015-12-30 | 南昌航空大学 | Water spray type automatic scanning device for ultrasonic TOFD nondestructive testing |
| CN106248791A (en) * | 2016-08-22 | 2016-12-21 | 合肥德泰科通测控技术有限公司 | A kind of method of metallic conduit ultrasonic listening slight crack |
| CN109975424A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of preceding surfaces externally and internally ultrasonic examination tool of adapter tube factory |
| CN112362730A (en) * | 2020-11-20 | 2021-02-12 | 西安热工研究院有限公司 | Compressor blade body and blade root rounding array eddy current detection device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2198532A (en) * | 1986-12-01 | 1988-06-15 | Atomic Energy Authority Uk | Ultrasonic scanning apparatus |
| CN101256173A (en) * | 2007-03-01 | 2008-09-03 | 中国石油天然气股份有限公司 | Manual scanner for spiral weld joint |
| CN201548530U (en) * | 2009-12-03 | 2010-08-11 | 天津诚信达金属检测技术有限公司 | Single-group probe scanning frame for small-diameter pipe ultrasonic diffraction time difference method detection |
| CN102235888A (en) * | 2010-05-05 | 2011-11-09 | 汪静 | Scanning device of nondestructive testing instrument |
| CN102495137A (en) * | 2011-12-26 | 2012-06-13 | 北京欧宁航宇检测技术有限公司 | Combined TOFD and phased array imaging scanner for weld of seal head for pressure vessel |
| CN203101339U (en) * | 2012-12-26 | 2013-07-31 | 山东省特种设备检验研究院 | Small-diameter thick-wall equipment time of flight diffraction (TOFD) detection scanning rack |
-
2012
- 2012-12-26 CN CN201210570686.9A patent/CN103018340B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2198532A (en) * | 1986-12-01 | 1988-06-15 | Atomic Energy Authority Uk | Ultrasonic scanning apparatus |
| CN101256173A (en) * | 2007-03-01 | 2008-09-03 | 中国石油天然气股份有限公司 | Manual scanner for spiral weld joint |
| CN201548530U (en) * | 2009-12-03 | 2010-08-11 | 天津诚信达金属检测技术有限公司 | Single-group probe scanning frame for small-diameter pipe ultrasonic diffraction time difference method detection |
| CN102235888A (en) * | 2010-05-05 | 2011-11-09 | 汪静 | Scanning device of nondestructive testing instrument |
| CN102495137A (en) * | 2011-12-26 | 2012-06-13 | 北京欧宁航宇检测技术有限公司 | Combined TOFD and phased array imaging scanner for weld of seal head for pressure vessel |
| CN203101339U (en) * | 2012-12-26 | 2013-07-31 | 山东省特种设备检验研究院 | Small-diameter thick-wall equipment time of flight diffraction (TOFD) detection scanning rack |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203633A (en) * | 2015-10-26 | 2015-12-30 | 南昌航空大学 | Water spray type automatic scanning device for ultrasonic TOFD nondestructive testing |
| CN106248791A (en) * | 2016-08-22 | 2016-12-21 | 合肥德泰科通测控技术有限公司 | A kind of method of metallic conduit ultrasonic listening slight crack |
| CN109975424A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of preceding surfaces externally and internally ultrasonic examination tool of adapter tube factory |
| CN109975424B (en) * | 2017-12-27 | 2024-05-10 | 核动力运行研究所 | Ultrasonic inspection tool for inner and outer surfaces of connecting pipe before delivery |
| CN112362730A (en) * | 2020-11-20 | 2021-02-12 | 西安热工研究院有限公司 | Compressor blade body and blade root rounding array eddy current detection device and method |
| CN112362730B (en) * | 2020-11-20 | 2024-01-23 | 西安热工研究院有限公司 | Device and method for detecting vortex of blade body and blade root rounding array of compressor blade |
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| Publication number | Publication date |
|---|---|
| CN103018340B (en) | 2014-12-24 |
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