CN103018340B - 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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- CN103018340B CN103018340B CN201210570686.9A CN201210570686A CN103018340B CN 103018340 B CN103018340 B CN 103018340B CN 201210570686 A CN201210570686 A CN 201210570686A CN 103018340 B CN103018340 B CN 103018340B
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- wheel support
- probe
- body frame
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- tofd
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
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 thick-wall equipment TOFD detects scanning frame.
Background technology
Time Of Flight Diffraction (TOFD) ultrasonic wave diffraction time difference method, that one relies on the diffraction energy obtained from " the end angle " and " end points " of test specimen inner structure (mainly referring to defect) to be checked to detect the method for defect, for detection, the quantitative and location of defect.Scanning frame is the important component part of TOFD checkout equipment, and effect is static probe and moves on spare part surface.Current scanning frame mostly on the market is four-wheel and fixes beam type structure, and be mainly used in the detection of downhand welding and major diameter press device girth joint, this type of scanning frame can not realize the good fit to 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 " describes a kind of four-wheel scanning frame, this scanning frame usable range is limited, can only to scanning within the scope of special diameter, when the radial direction to equipment such as small diameter thick-walled vessels, axial weld seam scanning, there is the problem that contact closely maybe cannot not contact; In addition, this scanning frame can only detect device outer surface, cannot 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, provides a kind of minor diameter thick-wall equipment TOFD easy to use, that detection is accurate, work efficiency is high to detect 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 is all gear structure, and engage each other and link 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.
The crossbeam of described body frame is provided with screw rod, screw rod is symmetrically arranged with two sections of screw threads relative to body frame crossbeam center, the rotation direction of two sections of screw threads is contrary, and every section of screw thread has been rotatably connected a probe bracket, and two probe brackets are symmetrical arranged relative to body frame crossbeam center; The bottom of probe bracket is provided with probe compressor arm, and probe is installed in the bottom of probe compressor arm.
Junction between described probe compressor arm and probe bracket is provided with holddown spring.
Described front-wheel support and the link of rear wheel support be each side provided with a clamping piece, two clamping pieces are linked together by two coupling shafts, and two coupling shafts are each passed through the center of circle of the link gear structure of front-wheel support and rear wheel support; The clamping piece of wherein side is provided with two hold-down bolts, and a hold-down bolt contacts with front-wheel support, and another hold-down bolt contacts with rear wheel support.
Body frame above described main magnet-wheel is provided with displacement recorder.
Compared to the prior art minor diameter thick-wall equipment TOFD of the present invention detects scanning frame, have reasonable in design, structure simple, be easy to processing, easy to use, detect accurately, work efficiency high, due to adopt be can synchronous adjustment front and back support and support degree of amplitude modulation is larger, therefore the surfaces externally and internally that can be implemented in different-diameter equipment carries out TOFD detection, and the situation that the design of C ellbeam front and back support can be avoided interfering due to support and equipment surface and cannot fit; Especially to radial direction, the axial weld seam of different-diameter minor diameter thick-wall equipment, the scanning frame of this tricycle structure, can realize the accurate detection of linear weld seam.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Accompanying drawing 1 is the structural representation that minor diameter thick-wall equipment TOFD detects scanning frame.
Accompanying drawing 2 is the vertical view of accompanying drawing 1.
In 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, probe compressor arm, 13, holddown spring, 14, screw rod, 15, screw thread, 16, displacement recorder.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
A kind of minor diameter thick-wall equipment TOFD of the present invention detects scanning frame, its structure comprise "T"-shaped body frame 1, " C " front-wheel support 2 He of shape " C " rear wheel support 3 of shape, the bottom of described body frame 1 is provided with main magnet-wheel 6, and the body frame 1 above main magnet-wheel 6 is provided with displacement recorder 16; 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 is all gear structure, and engage each other and link 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 regulate the height of front magnet-wheel 4 and rear magnet-wheel 5, thus ensures the good fit with minor diameter thick-wall equipment surface in testing process.
The crossbeam of described body frame 1 is provided with screw rod 14, screw rod 14 is symmetrically arranged with two sections of screw threads 15 relative to body frame 1 crossbeam center, the rotation direction of two sections of screw threads 15 is contrary, every section of screw thread 15 has been rotatably connected a probe bracket 11, two probe brackets 11 are symmetrical arranged relative to body frame 1 crossbeam center, rotary screw 14 can realize the relative movement of two probe brackets 11, without the need to adjustment 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 probe bracket 11 is provided with holddown spring 13, and holddown spring 13 is given probe compressor arm 12 all the time and visited first downward pressure.
Described front-wheel support 2 and the link of rear wheel support 3 be each side provided with a clamping piece 7, two clamping pieces 7 are linked together by two coupling shafts 8, and two coupling shafts 8 are each passed through the center of circle of the link gear structure of front-wheel support 2 and rear wheel support 3; The clamping piece 7 of wherein side is provided with two hold-down bolts, 9, hold-down bolt 9 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 thick-wall equipment TOFD of the present invention detects its processing and fabricating of scanning frame, processing and fabricating shown in by specification accompanying drawing.
Except the technical characteristic described in instructions, be the known technology of those skilled in the art.
Claims (4)
1. minor diameter thick-wall equipment TOFD detects a 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 is all gear structure, and engage each other and link 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;
The crossbeam of described body frame is provided with screw rod, screw rod is symmetrically arranged with two sections of screw threads relative to body frame crossbeam center, the rotation direction of two sections of screw threads is contrary, and every section of screw thread has been rotatably connected a probe bracket, and two probe brackets are symmetrical arranged relative to body frame crossbeam center; The bottom of probe bracket is provided with probe compressor arm, and probe is installed in the bottom of probe compressor arm.
2. minor diameter thick-wall equipment TOFD according to claim 1 detects scanning frame, and it is characterized in that, the junction between described probe compressor arm and probe bracket is provided with holddown spring.
3. minor diameter thick-wall equipment TOFD according to claim 1 detects scanning frame, it is characterized in that, described front-wheel support and the link of rear wheel support be each side provided with a clamping piece, two clamping pieces are linked together by two coupling shafts, and two coupling shafts are each passed through the center of circle of the link gear structure of front-wheel support and rear wheel support; The clamping piece of wherein side is provided with two hold-down bolts, and a hold-down bolt contacts with front-wheel support, and another hold-down bolt contacts with rear wheel support.
4. minor diameter thick-wall equipment TOFD according to claim 1 detects scanning frame, it is characterized in that, the body frame above described main magnet-wheel is provided with displacement recorder.
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 CN103018340A (en) | 2013-04-03 |
| CN103018340B true 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) |
Families Citing this family (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 |
| 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 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8628662D0 (en) * | 1986-12-01 | 1987-01-07 | Atomic Energy Authority Uk | Ultrasonic scanning apparatus |
| CN101256173B (en) * | 2007-03-01 | 2011-01-12 | 中国石油天然气股份有限公司 | Helical soldering seam manual checking machine |
| 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 |
| CN102495137B (en) * | 2011-12-26 | 2013-06-12 | 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 |
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2012
- 2012-12-26 CN CN201210570686.9A patent/CN103018340B/en not_active Expired - Fee Related
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