CN110031546B - Ultrasonic phased array flaw detection device and flaw detection method for bridge cable saddle friction plate weld joint - Google Patents
Ultrasonic phased array flaw detection device and flaw detection method for bridge cable saddle friction plate weld joint Download PDFInfo
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- CN110031546B CN110031546B CN201910182504.2A CN201910182504A CN110031546B CN 110031546 B CN110031546 B CN 110031546B CN 201910182504 A CN201910182504 A CN 201910182504A CN 110031546 B CN110031546 B CN 110031546B
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- 238000001514 detection method Methods 0.000 title claims abstract description 66
- 239000000523 sample Substances 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000003466 welding Methods 0.000 claims description 22
- 238000004804 winding Methods 0.000 claims description 17
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract description 7
- 235000012431 wafers Nutrition 0.000 abstract description 4
- 238000003384 imaging method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000000007 visual effect Effects 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 description 7
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/267—Welds
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- Life Sciences & Earth Sciences (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to an ultrasonic phased array flaw detection device for a bridge cable saddle friction plate weld joint and a flaw detection method thereof. The invention realizes sector scanning by transversely moving the probe parallel to the weld seam, and when in phased array ultrasonic detection, one probe can realize multiple angle detection of multiple wafers, the detection angle range can be 35-75 degrees or more, and under the control of a computer technology, the phased array ultrasonic detection has the performances of time delay, dynamic focusing, angle deflection and the like, so that a main sound beam can cover the whole weld seam detection area (including a heat affected zone), the imaging technology of the phased array enables the detection process to be visual, and the detection rate is also greatly improved.
Description
Technical Field
The invention relates to an ultrasonic phased array flaw detection device and method for a bridge cable saddle friction plate welding seam, and belongs to the technical field of nondestructive detection.
Background
The main cable saddle and the scattered cable saddle for the large bridge are permanent structural members for supporting the main cable of the suspension bridge and are not replaceable. The saddle body is generally cast and formed by cast steel, the saddle partition plate is assembled and connected with the saddle body in a welding mode, the saddle partition plate of the suspension bridge at home and abroad is generally fixedly connected through intermittent and non-penetration welding seams, the function of separating cable strands is mainly achieved, the shearing resistance is weak, the integral friction coefficient of a saddle groove is influenced, the anti-slip design and application of a main cable strand of the suspension bridge are not facilitated, and along with the successful development of integral friction plate welding forming technology in recent years, the integral friction plate structure of the saddle based on the full penetration welding seams is widely applied to the design of a large-scale suspension bridge, and particularly, a solution is provided for the problem of slip between a main cable strand and a main cable strand of a middle tower of a multi-tower large-span suspension bridge. But the integral friction plate structure also brings the difficult problem of weld joint flaw detection.
The design of the suspension bridge saddle requires welding a plurality of friction plates (separation plates), the gaps among the friction plates are small (generally less than 100 mm), the height of the friction plates is 800-1000mm, nondestructive detection of welding lines in a deep and narrow space is difficult to develop, and the suspension bridge saddle is an important component of a bridge, and the defect detection is necessary. The common A-type ultrasonic detection requires a probe to scan the weld joint in a zigzag manner in front-back and left-right directions, and the probe is required to scan corners and circles after finding defects, and is matched with probes of different specifications. Because of the limitation of structural detection conditions, the conventional nondestructive detection method cannot be guaranteed in detection precision, reliability or detection efficiency, and the like, and dead zones exist in part of the area. For the weld joint with narrow deep space of the cable saddle friction plate, it is obvious that the common A-type ultrasonic detection cannot be implemented because of no operation space, and the existing Rays (RT) and surfaces (MT, PT) cannot be implemented.
The ultrasonic phased array detection technology can realize rapid and accurate nondestructive detection by controlling focusing and deflection of the sound beam, and under the control of a computer technology, the phased array ultrasonic detection has the performances of time delay, dynamic focusing, angle deflection and the like, so that the detection result is more accurate and reliable. Meanwhile, the scanning mode of phased array ultrasonic detection can be zigzag electronic scanning (E scanning) of a vertical welding line, or can be sector scanning (S scanning) of a parallel welding line dragging transversely and C scanning and 3D scanning of a cross section. And the cable saddle friction plate welding seam can adopt a sector scanning mode of parallel welding seam transverse movement, and the acquired detection data can be analyzed by using off-line data analysis software or a data analysis function in a phased array ultrasonic instrument to finish detection. However, there is no phased array flaw detection device and flaw detection method applicable to cable saddle friction plate welds in the market.
Disclosure of Invention
The invention aims to overcome the defects of conventional nondestructive testing and provides an ultrasonic phased array flaw detection device and an ultrasonic phased array flaw detection method for a bridge cable saddle friction plate weld joint.
The invention solves the problems by adopting the following technical scheme: the utility model provides a bridge cable saddle friction plate welding seam ultrasonic phased array flaw detection device, it is including scanning the frame, scanning the frame bottom and being provided with four gyro wheels, scanning the frame rear end and transversely having seted up the spout, be provided with the probe frame in the spout, the probe frame passes through bolt fixed mounting in the spout, the probe frame tip is provided with phased array probe, scanning and being provided with two sets of anti-deviation device on the frame bilateral symmetry, anti-deviation device includes the spring holder, be provided with the spring housing on the spring holder, the spring housing cartridge has the ejector pin, be provided with the spring between ejector pin and the spring housing, the ejector pin outer end is provided with the runner.
Preferably, a ranging encoder is arranged at the front end of the scanning frame, and the ranging encoder is contacted with the bottom of the saddle groove.
Preferably, the electric driving device is arranged in front of the scanning frame and comprises a fixed support, the fixed support comprises a left support plate and a right support plate, the left support plate and the right support plate are connected through a front connecting rod and a rear connecting rod, a driving motor and a winding shaft are arranged on the fixed support, the winding shaft is positioned at the rear side of the driving motor, the driving motor is connected with the winding shaft through a reduction gearbox, a dragging rope is wound on the winding shaft, and the winding shaft is connected with the front end of the scanning frame through the dragging rope.
Preferably, a handle rod is arranged between the middle parts of the left support plate and the right support plate, and the handle rod is positioned above the driving motor and the coiling shaft.
Preferably, the scanning frame is externally provided with a follow-up coupling water supply device, the follow-up coupling water supply device comprises a pressurized water spraying barrel, a plastic hose is connected and arranged on the pressurized water spraying barrel, a water valve is arranged on the plastic hose, and the water outlet end of the plastic hose is fixed to the position of the phased array probe on the probe frame.
Preferably, the scanning frame is provided with a mounting groove along the transverse direction, and the spring seat is fixedly connected with the mounting groove through a bolt.
Preferably, the phased array probe adopts a probe of a multi-array element piezoelectric wafer.
An ultrasonic phased array flaw detection method for a bridge cable saddle friction plate weld joint comprises the following steps:
step one, adjusting the position of a probe frame in a chute according to the gap size of a friction plate to be detected, and fixing the probe frame;
step two, adjusting the position of a counting wheel of a ranging encoder of the flaw detection device, so that the counting wheel can be in close contact with the bottom of the saddle groove and can reliably rotate for counting when the scanning frame moves forwards and backwards, and fixing the ranging encoder at the moment;
step three, adjusting the positions of spring seats of the anti-deviation devices according to the gap sizes of friction plates to be detected, enabling springs in spring sleeves of the anti-deviation devices to be compressed in half, and fixing the spring seats at the moment;
step four, placing the flaw detection device in a gap of a friction plate to be detected, enabling four rollers at the bottom of the scanning frame to contact with the bottom of the saddle groove, and moving the scanning frame to the starting point position of the welding line;
step five, opening the phased array equipment, opening a water valve, starting a driving motor to pull a scanning frame, and starting flaw detection scanning;
and step six, dragging the scanning frame to the end position of the welding line to finish the whole flaw detection operation.
Compared with the prior art, the invention has the advantages that:
1. according to the invention, sector scanning is realized by transversely moving the probe parallel to the weld seam, when phased array ultrasonic detection is performed, one probe can realize multiple angle detection of multiple wafers, for example, 16 array elements are equivalent to the simultaneous use of 16 probes, the detection angle range can be 35-75 degrees or more, under the control of a computer technology, the phased array ultrasonic detection has the performances of time delay, dynamic focusing, angle deflection and the like, so that a main sound beam can cover the whole weld seam detection area (including a heat affected zone), and the imaging technology of the phased array enables the detection process to be visual, and the detection rate to be greatly improved;
2. the invention has simple structure and convenient operation, and adopts an electric driving mode to finish the scanning of the probe at a constant speed, thereby greatly improving the detection efficiency;
3. according to the invention, the scanning frame and the probe are enabled to be parallel to the welding line and have unchanged distance through the anti-deviation device, so that the welding line detection effect is effectively ensured;
4. according to the invention, the positions of the probe frame and the spring seat can be adjusted according to the gaps of the friction plate, so that the detection requirements of different cable saddles can be met, the springs of the anti-deviation device for different cable saddles always keep a compressed half position, the scanning speed is not changed, and the consistency of scanning results is effectively ensured;
5. the invention adopts water as the coupling agent, which is convenient for the subsequent anti-corrosion coating of the cable saddle.
Drawings
Fig. 1 is a schematic structural diagram of an ultrasonic phased array flaw detection device for a bridge cable saddle friction plate weld joint.
Fig. 2 is a schematic structural diagram of the deviation preventing device in fig. 1.
Fig. 3 is a schematic structural view of the electric driving device in fig. 1.
Wherein:
scanning frame 1
Chute 2
Probe frame 3
Phased array probe 4
Deviation preventing device 5
Spring seat 51
Spring housing 52
Ejector rod 53
Spring 54
Rotating wheel 55
Distance measuring encoder 6
Electric drive 7
Fixed support 71
Support plate 711
Link 712
Handle bar 713
Drive motor 72
Winding shaft 73
Reduction gearbox 74
Follower-coupled water supply device 8
Pressurized water spray bucket 81
Plastic hose 82
Water valve 83
Mounting groove 9
A bolt 10.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 3, the ultrasonic phased array flaw detection device for the welding seam of the bridge cable saddle friction plate in the embodiment comprises a scanning frame 1, four rollers are arranged at the bottom of the scanning frame 1, a sliding groove 2 is transversely formed in the rear end of the scanning frame 1, a probe frame 3 is arranged in the sliding groove 2, the probe frame 3 is fixedly arranged in the sliding groove 2 through bolts, a phased array probe 4 is arranged at the end part of the probe frame 3, the phased array probe 4 is connected with an ultrasonic phased array detector, two groups of anti-deflection devices 5 are symmetrically arranged on the scanning frame 1, each anti-deflection device 5 comprises a spring seat 51, a spring sleeve 52 is arranged on each spring seat 51, a push rod 53 is inserted into each spring sleeve 52, a spring 54 is arranged between each push rod 53 and each spring sleeve 52, a rotating wheel 55 is arranged at the outer end of each push rod 53, and enables the rotating wheel at the end part of each push rod to press against the friction plate, and the rotating wheel contacts with the cable saddle friction plate and can rotate freely when in operation;
a ranging encoder 6 is arranged at the front end of the scanning frame 1, and the ranging encoder 6 is contacted with the bottom of the saddle groove;
an electric driving device 7 is arranged in front of the scanning frame 1, the electric driving device 7 comprises a fixed support 71, the fixed support 71 comprises a left support plate 711 and a right support plate 711, the left support plate 711 and the right support plate 711 are connected through a front connecting rod 712 and a rear connecting rod 712, a driving motor 72 and a winding shaft 73 are arranged on the fixed support 71, the winding shaft 73 is positioned at the rear side of the driving motor 72, the driving motor 72 is connected with the winding shaft 73 through a reduction gearbox 74, a dragging rope 75 is wound on the winding shaft 73, and the winding shaft 73 is connected with the front end of the scanning frame 1 through the dragging rope 75;
a handle bar 713 is arranged between the middle parts of the left and right support plates 711, and the handle bar 713 is positioned above the driving motor 72 and the winding shaft 73;
the scanning frame 1 is provided with a follow-up coupling water supply device 8, the follow-up coupling water supply device 8 comprises a pressurized water spraying barrel 81, a plastic hose 82 is connected to the pressurized water spraying barrel 81, a water valve 83 is arranged on the plastic hose 82, and the water outlet end of the plastic hose 82 is fixed to the position of the phased array probe 4 on the probe frame 3;
a mounting groove 9 is formed in the scanning frame 1 along the transverse direction, and the spring seat 51 is fixedly connected with the mounting groove 9 through a bolt 10;
the phased array probe 4 adopts a multi-array element piezoelectric wafer (such as 16 array elements) with smaller size and shorter probe front edge.
The detection method comprises the following steps:
step one, adjusting the position of a probe frame in a chute according to the gap size of a friction plate to be detected, and fixing the probe frame;
step two, adjusting the position of a counting wheel of a ranging encoder of the flaw detection device, so that the counting wheel can be in close contact with the bottom of the saddle groove and can reliably rotate for counting when the scanning frame moves forwards and backwards, and fixing the ranging encoder at the moment;
step three, adjusting the positions of spring seats of the anti-deviation devices according to the gap sizes of friction plates to be detected, enabling springs in spring sleeves of the anti-deviation devices to be compressed in half (at the moment, the spring force of the ejector rod is proper), and fixing the spring seats at the moment;
step four, placing the flaw detection device in a gap of a friction plate to be detected, enabling four rollers at the bottom of the scanning frame to contact with the bottom of the saddle groove, and moving the scanning frame to the starting point position of the welding line;
step five, opening the phased array equipment, opening a coupling water valve, starting a driving motor to pull a scanning frame, and starting flaw detection scanning;
and step six, dragging the scanning frame to the end position of the welding line to finish the whole flaw detection operation.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions that are formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present invention.
Claims (2)
1. An ultrasonic phased array flaw detection method for a bridge cable saddle friction plate weld joint is characterized by comprising the following steps of: the ultrasonic phased array flaw detection device is used for carrying out ultrasonic phased array flaw detection on welding seams of bridge cable saddle friction plates, the device comprises a scanning frame, four rollers are arranged at the bottom of the scanning frame, sliding grooves are formed in the rear end of the scanning frame in the transverse direction, a probe frame is arranged in each sliding groove, the probe frame is fixedly arranged in each sliding groove through bolts, phased array probes are arranged at the end parts of the probe frame, two groups of anti-deviation devices are symmetrically arranged on the scanning frame left and right, each anti-deviation device comprises a spring seat, a spring sleeve is arranged on each spring seat, a push rod is inserted into each spring sleeve, a spring is arranged between each push rod and each spring sleeve, and a rotating wheel is arranged at the outer end of each push rod;
a ranging encoder is arranged at the front end of the scanning frame and is contacted with the bottom of the saddle groove;
the front of the scanning frame is provided with an electric driving device, the electric driving device comprises a fixed bracket, the fixed bracket comprises a left supporting plate and a right supporting plate, the left supporting plate and the right supporting plate are connected through a front connecting rod and a rear connecting rod, the fixed bracket is provided with a driving motor and a winding shaft, the winding shaft is positioned at the rear side of the driving motor, the driving motor is connected with the winding shaft through a reduction gearbox, a dragging rope is wound on the winding shaft, and the winding shaft is connected with the front end of the scanning frame through the dragging rope;
a handle rod is arranged between the middle parts of the left support plate and the right support plate and is positioned above the driving motor and the coiling shaft;
the scanning frame is externally provided with a follow-up coupling water supply device, the follow-up coupling water supply device comprises a pressurized water spraying barrel, a plastic hose is connected to the pressurized water spraying barrel, a water valve is arranged on the plastic hose, and the water outlet end of the plastic hose is fixed to the position of the phased array probe on the probe frame;
the scanning frame is transversely provided with an installation groove, and the spring seat is fixedly connected with the installation groove through a bolt;
the method comprises the following steps:
step one, adjusting the position of a probe frame in a chute according to the gap size of a friction plate to be detected, and fixing the probe frame;
step two, adjusting the position of a counting wheel of a ranging encoder of the flaw detection device, so that the counting wheel can be in close contact with the bottom of the saddle groove and can reliably rotate for counting when the scanning frame moves forwards and backwards, and fixing the ranging encoder at the moment;
step three, adjusting the positions of spring seats of the anti-deviation devices according to the gap sizes of friction plates to be detected, enabling springs in spring sleeves of the anti-deviation devices to be compressed in half, and fixing the spring seats at the moment;
step four, placing the flaw detection device in a gap of a friction plate to be detected, enabling four rollers at the bottom of the scanning frame to contact with the bottom of the saddle groove, and moving the scanning frame to the starting point position of the welding line;
step five, opening the phased array equipment, opening a water valve, starting a driving motor to pull a scanning frame, and starting flaw detection scanning;
and step six, dragging the scanning frame to the end position of the welding line to finish the whole flaw detection operation.
2. The ultrasonic phased array flaw detection method for the bridge cable saddle friction plate weld joint, which is disclosed by claim 1, is characterized in that: the phased array probe adopts a probe of a multi-array element piezoelectric wafer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910182504.2A CN110031546B (en) | 2019-03-12 | 2019-03-12 | Ultrasonic phased array flaw detection device and flaw detection method for bridge cable saddle friction plate weld joint |
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| CN201910182504.2A CN110031546B (en) | 2019-03-12 | 2019-03-12 | Ultrasonic phased array flaw detection device and flaw detection method for bridge cable saddle friction plate weld joint |
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| CN110031546B true CN110031546B (en) | 2024-02-09 |
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| CN110632184B (en) * | 2019-10-10 | 2024-06-11 | 江苏法尔胜材料分析测试有限公司 | Ultrasonic phased array detection device and detection method for main cable saddle vertical friction plate welding seam |
| CN111505118B (en) * | 2020-04-27 | 2023-07-21 | 润电能源科学技术有限公司 | Method, device, equipment and storage medium for detecting welding seam |
| CN111562309B (en) * | 2020-05-09 | 2023-06-27 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Ultrasonic phased array welding line detection magnetic adsorption wall climbing robot and working method thereof |
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| CN104597128A (en) * | 2015-01-08 | 2015-05-06 | 中国东方电气集团有限公司 | Phased array ultrasonic nondestructive testing robot system applicable to steam turbine welding rotor |
| CN204694677U (en) * | 2014-11-30 | 2015-10-07 | 国家电网公司 | Small diameter tube weld seam ultrasonic phase array pick-up unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8596125B2 (en) * | 2011-06-23 | 2013-12-03 | Amsted Rail Company, Inc. | Railway wheel ultrasonic testing apparatus |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN204044113U (en) * | 2014-07-14 | 2014-12-24 | 浙江省特种设备检验研究院 | A kind of heat exchanger tube sheet fillet weld ultrasound wave automatic detection device |
| CN104374825A (en) * | 2014-11-19 | 2015-02-25 | 浙江省特种设备检验研究院 | Device and method for automatically detecting ultrasonic phased array of gas storage well |
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