CN105203631A - Large-size pipe-shaped structure multi-channel water coupling ultrasonic inspection device and method - Google Patents
Large-size pipe-shaped structure multi-channel water coupling ultrasonic inspection device and method Download PDFInfo
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- CN105203631A CN105203631A CN201510655635.XA CN201510655635A CN105203631A CN 105203631 A CN105203631 A CN 105203631A CN 201510655635 A CN201510655635 A CN 201510655635A CN 105203631 A CN105203631 A CN 105203631A
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Abstract
The invention discloses a large-size pipe-shaped structure multi-channel water coupling ultrasonic inspection device and method. The multi-channel water coupling ultrasonic inspection device comprises a probe, water cavity assemblies, a calibration device and a one-to-many water pipe converter, wherein water flows in from a general water inlet of the one-to-many water pipe converter and flows into a water inlet nozzle in each water cavity assembly through each water outlet nozzle of the one-to-many water pipe converter; finally, the water flows out from a water outlet hole of each water cavity assembly to a test piece to be detected, so as to realize contact type water coupling inspection and greatly reduce the loss of water flow; the lower surface of the calibration device is in contact with the surface of the test piece to be detected when the test piece to be detected is put, so that arc-surface correction is finished and the whole device is pressed down until the bottom of each water cavity assembly is in contact with a circular-arc-shaped surface of the test piece to be detected, and vertical incidence to the surface of the test piece to be detected by ultrasonic wave beams is realized; the device disclosed by the invention has a small size and is normalized, and is convenient for integration of a plurality of channels; and the automation is easy to realize.
Description
Technical field
The invention belongs to structural health detection field, be specifically related to a kind of Multi-channel water coupling ultrasonic pick-up unit and detection method thereof of macrotype tubular structure.
Background technology
Macrotype tubular structure, as gas, liquid container, chemical industry smelting vessel and safety guarantee facility etc., is widely used in the fields such as Aero-Space, national defence, chemical industry, medical treatment.Due to the generation of inherent vice in manufacture process (crackle, space, snotter), and the evolution of defect and the generation of new defect (crackle, corrosion) in use procedure, make the Non-Destructive Testing of structure become difficulty.Ultrasonic detecting technology, as in five large conventional Dynamic Non-Destruction Measurements most widely used general, frequency of utilization is the highest, development a kind of Dynamic Non-Destruction Measurement faster, wide with its sensing range, detect that the degree of depth is large, defect location is accurate, highly sensitive, cost is low, easy to use, speed is fast, harmless and be convenient to the advantages such as onsite application, become the primary selection of this kind of structure Non-Destructive Testing.
Supersonic detection method can be divided into contact, liquid immersion type and empty coupling formula three kinds.Contact supersonic detection method be ultrasonic probe and measurand by direct contact infection ultrasound wave, the usual mode with daubing coupling agent reaches the effect of deaeration and good contact between the two.Liquid immersion type supersonic detection method is that the ultrasonic wave-coupled between ultrasonic probe and measurand is propagated in fluid passage.Empty coupling formula supersonic detection method is that the ultrasonic wave-coupled between ultrasonic probe and measurand is propagated in atmosphere.For the Ultrasonic Detection of macrotype tubular structure, contact supersonic detection method, due to the cause of daubing coupling agent, higher, the easy pollution of inefficiency, cost object to be measured, is difficult to robotization.The decay of empty coupling formula supersonic detection method detection signal is serious, restricted application and be subject to Environmental Noise Influence.Relatively above two kinds of methods, liquid immersion type supersonic detection method has noncontact, detection signal decay is little, highly sensitive, efficiency is high, applied widely, cost is lower, clean environment firendly and be convenient to the advantage of robotization, therefore becomes the primary selection of macrotype tubular structure.But because structural volume is large, quality large, become closed, submergence is not suitable for this kind of structure with the method realizing liquid immersion type Ultrasonic Detection in the sink.Therefore, realize by the mode of water spray coupling the best approach that the detection of liquid immersion type ultrasonic pulse-echo is macrotype tubular structure.
For said method, how to realize water coincidence and directly decide testing result.1985, Borislav (US4507969) devised a kind of ultrasonic liquid jet probe, and main implementation is: make a nozzle, was placed wherein by ultrasonic probe.Change fluid pressure and flow velocity by the shape changing runner around probe in nozzle, bottom surface portions of popping one's head in immerses in liquid, and ultrasonic wave-coupled is ejected into measurand surface in a liquid.Detection signal both can be received by same probe by the mode of ultrasonic pulse-echo, also can be received by the probe of structure opposite side by transmission mode, and wherein opposite side probe is also with identical water spray coupling process.Subsequently, the Fred (4558598) of Boeing devises a kind of ultrasonic linear array nozzle, for the ultrasonic detection in transmission mode of layer structure (as honeycomb).This design is separated completely by the ultrasonic transducer runner of index luffing baffle plate by linear array, and the ultrasonic wave-coupled that each transducer is launched is ejected into body structure surface through respective runner in water, and detection signal is received by the ultrasonic probe of opposite side.Along with the widespread use of Ultrasonic Detection, various ultrasonic water spray coupling device also emerges in an endless stream, wherein more representational as US74327B2, US7607594B2, US7798003B2 etc.The design concept of above-mentioned patent and structure are all similar with the design of Borislav.
Relatively external, domestic ultrasonic detecting technology is in a flourish stage, also has many scholars to carry out design and devdlop to water spray coupled system.Xu Zhinong etc. (CN10268055A) devise a kind of immersion probe based on ultrasound measuring instrument water spray coupling device, and the mode adopting dismountable multi-pipeline to connect forms probe downstream canal, by ultrasonic wave-coupled wherein and be ejected into body structure surface.Haibo Lius etc. (CN103962890A) devise a kind of bubbler for Ultrasonic Detection, realize double-deck rectification by double-layer porous sieve structure, and control current are laminar condition.
Although the water spray coupled system that above-mentioned domestic and international liquid immersion type ultrasonic pulse-echo detects all designs comparatively reasonable, but still can not be applied in structure that is large-scale, tubulose, its main weak point is: 1. current form water circulation system by tank after ejecting from nozzle.For large scale system, because detection time is long, and there is no enough large tank, serious current waste can be caused, increase water scavenging system pressure.2., mainly for the Ultrasonic Detection of planar structure, seldom consider the change of beam angle, have ignored the beam angle calibration problem to tubular structure ultrasound examination, be difficult to realize vertical incidence.3. mainly single pass Ultrasonic Detection, and nozzle-integrated size is comparatively large, is not easy to the increase of multichannel integrated and site density, and then cannot meets the Ultrasonic Detection of large scale structure.
Summary of the invention
In order to solve above problems of the prior art, the invention provides a kind of Multi-channel water coupling ultrasonic pick-up unit of macrotype tubular structure; Contact water coincidence can be realized during detection detect, greatly reduce current loss; Additional calibration device, realizes wave beam to cambered surface vertical incidence; Volume is little, and standardization, is convenient to multichannel integrated, is conducive to realizing robotization.
One object of the present invention is the Multi-channel water coupling ultrasonic pick-up unit proposing a kind of macrotype tubular structure.
The Multi-channel water coupling ultrasonic pick-up unit of macrotype tubular structure of the present invention comprises: probe, water cavity assembly, calibrating installation and water pipe conversion head more than a point; Wherein, probe is arranged in water cavity assembly; Multiple water cavity assembly close-packed arrays is in a row; At the two ends of a drain chamber assembly, calibrating installation is set respectively, by securing member and a drain chamber assembly fastening; On a drain chamber assembly, arrange water pipe conversion head more than a point, the two is coaxial, and more than one point, the lower surface of water pipe conversion head presses the probe be arranged in water cavity assembly; The top of each water cavity assembly is provided with into water nozzle, and bottom is provided with apopore; More than one point, one end of water pipe conversion head is provided with total water inlet, and with multiple water cavity assembly to enter water nozzle corresponding, be provided with multiple faucet, be connected with the water nozzle that enters of water cavity assembly respectively by connecting pipe; Water flows into from the total water inlet of water pipe conversion head more than a point, is flowed into respectively and enters water nozzle in water cavity assembly, finally flow out from the apopore of each water cavity assembly by each faucet of water pipe conversion head more than a point; Under the state be not stressed, the lower surface of calibrating installation exceeds the bottom of water cavity assembly, be placed on the surface of the first contact measured test specimen of lower surface of the process alignment device on test specimen to be measured, complete cambered surface to correct, press down whole pick-up unit afterwards, until the surface of the circular arc of the bottom contact measured test specimen of water cavity assembly.
Water cavity assembly comprises assembly, middle assembly and lower assembly; Wherein, be provided with in upper assembly: probe hole, blasthole, enter water nozzle, the first storage cistern and gutter channel, wherein, probe hole and one or more blasthole are set respectively at the top of upper assembly, probe is arranged in probe hole, and enter water nozzle and insert blasthole, the bottom of blasthole is communicated with the top of the first storage cistern, the bottom of the first storage cistern arranges multiple gutter channel, and the bottom of upper assembly is provided with external thread; Be provided with the second storage cistern in middle assembly, the bottom of the multiple gutter channels in upper assembly connects the top of the second storage cistern, and top and the bottom of middle assembly are respectively arranged with internal thread, is connected respectively with upper assembly and lower assembly; The center of lower assembly is provided with through hole, and the bottom of through hole sets out the mouth of a river, and as the terminal of water cavity assembly, arrange the hard foam block of annular at the outward flange of water delivering orifice, the bottom of hard foam block exceeds the bottom of water delivering orifice; The top of lower assembly is provided with external thread, is connected with middle assembly; Water flows into from entering water nozzle, enters the first storage cistern, from the bottom of the first storage cistern through multiple gutter channel, enter the second storage cistern, finally flow out from water delivering orifice through blasthole.First storage cistern is in order to buffering and rectification, and the second storage cistern is in order to secondary rectification.The size of probe hole is designed and sized to reducing hole according to what pop one's head in, and top is provided with shaft shoulder groove, coordinates locate with the shaft shoulder of probe.The shape of water delivering orifice is toroidal or taper shape.
Further, in upper assembly, also comprise seal groove and O-ring seal, one or more seal groove is around the outer wall of probe hole, and O-ring seal is arranged in seal groove, overflows to reduce flowing water.
In the both sides of the upper assembly of each water cavity assembly, be respectively arranged with pilot hole, multiple water cavity assembly close-packed arrays is in a row, passes through two registration holes respectively, be connected and fixed by water cavity assembly with two support bars.
Calibrating installation comprises slide rail frame, detent, sliding-rail groove, calibration block, spring groove and spring; Wherein, the bottom of slide rail frame is provided with detent; Sliding-rail groove is respectively arranged with in the both sides of detent; Calibration block moves up and down in detent along sliding-rail groove; The bottom surface of calibration block is circular arc, mainly plays the function that circular arc is calibrated, and the size of circular arc determines the maximal value calibrating circular arc scope; At the top relative position of slide rail frame and calibration block, be provided with multiple spring groove, between slide rail frame and calibration block, by spring groove, multiple spring be installed, thus increase the integral rigidity of calibration block, control the stability of calibration block lifting simultaneously.Calibrating installation pilot hole is respectively arranged with in the both sides of slide rail frame, calibrating installation is connected in the two ends of a drain chamber assembly by support bar by calibrating installation pilot hole, at the two ends of every root support bar, securing member is set respectively, calibrating installation and a drain chamber assembly are fixed.
Water pipe conversion head more than one point comprises tube wall, total water inlet, fixed block, runner, faucet and fairlead; Wherein, one end of tube wall is provided with total water inlet; In tube wall, be provided with fixed block, fixed block is coaxial with tube wall, and the upper wall of fixed block and tube wall and lower wall connect into as a whole; Position corresponding with the probe in each water cavity assembly in fixed block is provided with fairlead, and the lead-in wire of probe is connected to external unit by fairlead; Between fixed block and two sidewalls, there is space, thus form runner; Total water inlet is connected with runner; Faucet is respectively arranged with, faucet and flow passage with each position entering water nozzle corresponding of a drain chamber assembly in the both sides of tube wall; Thus water flows into from total water inlet, through runner, what flow into corresponding water cavity assembly from each faucet enters water nozzle.
Another object of the present invention is the Multi-channel water coupling ultrasonic detection method providing a kind of macrotype tubular structure.
The Multi-channel water coupling ultrasonic detection method of macrotype tubular structure of the present invention, comprises the following steps:
1) pick-up unit is placed on the surface of test specimen to be measured, press whole pick-up unit, the surface of the circular arc of the bottom arc contact test specimen to be measured of the calibration block of calibrating installation, calibrates, and makes the axes normal of each water cavity assembly in the circular arc of test specimen to be measured;
2) pressure increases, and controlled by the multiple springs be embedded in calibrating installation, calibration block rises in slide rail frame along sliding-rail groove, the surface of the circular arc of hard foam block contact measured test specimen;
3) water in eminence water source is flowed into by the total water inlet of water pipe conversion head more than a point under gravity, and through runner, what flow into corresponding water cavity assembly from each faucet enters water nozzle;
4) from the water entering water nozzle inflow, the first storage cistern is entered through blasthole, from the bottom of the first storage cistern through multiple gutter channel, enter the second storage cistern, finally flow out from water delivering orifice, and be sealed between pick-up unit and test specimen to be measured, now pass through water coincidence propagate ultrasound waves between probe and test specimen to be measured;
5) under the control of mechanical arm and computer software, carry out ultrasonic tesint, one group tested after, pressure is reduced while ensureing sealing, pick-up unit slides on the surface of the circular arc of test specimen to be measured, increases pressure after navigating to next place, repeats step 1) ~ 5), continue test, until automatically complete the C scanning of whole test specimen to be measured.The less spilling of current in whole process.
Advantage of the present invention
The present invention adopt water pipe conversion head more than a point water to be introduced respectively a drain chamber assembly each enter water nozzle, the water delivering orifice through water cavity assembly flows out to test specimen to be measured, realizes contact water coincidence and detects, and greatly reduces current loss; At the two ends fixed calibration device of a drain chamber assembly, realize the surperficial vertical incidence that ultrasound beamformer treats test block; Device of the present invention, volume is little, and standardization, is convenient to multichannel integrated, is conducive to realizing robotization.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Multi-channel water coupling ultrasonic pick-up unit of macrotype tubular structure of the present invention, and wherein, (a) is stereographic map, and (b) is side view;
Fig. 2 is the sectional view of the water cavity assembly of the Multi-channel water coupling ultrasonic pick-up unit of macrotype tubular structure of the present invention;
Fig. 3 is the sectional view of the calibrating installation of the Multi-channel water coupling ultrasonic pick-up unit of macrotype tubular structure of the present invention;
Fig. 4 is the schematic diagram of the water pipe conversion head more than a point of the Multi-channel water coupling ultrasonic pick-up unit of macrotype tubular structure of the present invention, wherein, a () is stereographic map, b () is the sectional view along A-A ' line in figure (a), (c) is the sectional view along B-B ' line in figure (a).
Embodiment
Below in conjunction with accompanying drawing, by specific embodiment, set forth the present invention further.
As shown in Figure 1, the Multi-channel water coupling ultrasonic pick-up unit of the macrotype tubular structure of the present embodiment comprises: probe 1, water cavity assembly 2, calibrating installation 3 and water pipe conversion head 4 more than a point; Wherein, probe 1 is arranged in water cavity assembly 2; 8 water cavity assembly 2 close-packed arrays are in a row; Arrange calibrating installation 3 respectively at the two ends of a drain chamber assembly, be chained together by support bar 5, the two ends of wearing connecting rod 5 arrange securing member 6 respectively, and securing member 6 adopts clamp nut, thus make calibrating installation 3 and a drain chamber assembly 2 fastening; On a drain chamber assembly, arrange water pipe conversion head 4 more than a point, the two is coaxial, and the lower surface of water pipe conversion head more than a point presses the probe 1 be arranged in water cavity assembly; The top of each water cavity assembly is provided with into water nozzle 21-3, and bottom is provided with apopore; One end of water pipe conversion head more than one point is provided with total water inlet 42, and with multiple water cavity assembly to enter water nozzle corresponding, be provided with multiple faucet 41, be connected with the water nozzle 21-3 that enters of water cavity assembly respectively by connecting pipe 7; Water flows into from total water inlet 42 of water pipe conversion head more than a point, is flowed into respectively and enters water nozzle 21-3 in water cavity assembly, finally flow out from the apopore 23-1 of each water cavity assembly by each faucet 41 of water pipe conversion head more than a point.
As shown in Figure 2, water cavity assembly 2 comprises assembly 21, middle assembly 22 and lower assembly 23, wherein, be provided with in upper assembly: probe hole 21-1, blasthole 21-2, enter water nozzle 21-3, first storage cistern 21-4, gutter channel 21-5, seal groove 21-6 and O-ring seal 21-7, wherein, at the crown center of upper assembly, probe hole 21-1 is set, two blasthole 21-2 are separately positioned on the both sides of probe hole, probe 1 is arranged in probe hole 21-1, enter water nozzle 21-3 and insert blasthole 21-2, the two is threaded connection, the bottom of blasthole is communicated with the top of the first storage cistern 21-4, the bottom of the first storage cistern arranges multiple gutter channel 21-5, seal groove 21-6 is around the outer wall of probe hole, O-ring seal 21-7 is arranged in seal groove, the bottom of upper assembly is provided with external thread 21-8, be provided with the second storage cistern 22-1 in middle assembly 22, the bottom of the multiple gutter channels in upper assembly connects the top of the second storage cistern, and the top of middle assembly and bottom are respectively arranged with internal thread 22-2, is connected respectively with upper assembly and lower assembly, the center of lower assembly 23 is provided with through hole 23-1, and the bottom of through hole is water delivering orifice 23-4, and shape is toroidal or taper shape, as the terminal of water cavity assembly, arranges the hard foam block 23-2 of annular at the outward flange of water delivering orifice, the top of lower assembly is provided with external thread 23-3, is connected with middle assembly.The size of probe hole 21-1 is designed and sized to reducing hole according to what pop one's head in, and top is provided with shaft shoulder groove, coordinates locate with the shaft shoulder of probe.In the both sides of the upper assembly of water cavity assembly, be respectively arranged with pilot hole 21-9, middle through support bar, multiple water cavity assembly is coupled together.Probe 1 adopts ultrasonic water immersion formula longitudinal wave probe, top connecting lead wire 11.
As shown in Figure 3, calibrating installation 3 comprises slide rail frame 31, detent 32, sliding-rail groove 33, calibration block 34, spring groove 36 and spring 35; Wherein, the bottom of slide rail frame 31 is provided with detent 32; Sliding-rail groove 33 is respectively arranged with in the both sides of detent 32; Calibration block 34 moves up and down in detent along sliding-rail groove; The bottom surface of calibration block 34 is circular arc; At the top relative position of slide rail frame and calibration block, be provided with 2 spring grooves 36, between slide rail frame and calibration block, by spring groove, 2 springs 36 be housed.Calibrating installation pilot hole is respectively arranged with in the both sides of slide rail frame, calibrating installation is connected in the two ends of a drain chamber assembly by support bar 5 by calibrating installation pilot hole, securing member 6 is set respectively at the two ends of every root support bar, calibrating installation and a drain chamber assembly are fixed.
As shown in Figure 4, more than one point, water pipe conversion head 4 comprises: tube wall 42, total water inlet 41, fixed block 43, runner 45, faucet 46 and fairlead 44; Wherein, one end of tube wall 42 is provided with total water inlet 41; Fixed block 43 is provided with in tube wall, fixed block coaxial with tube wall, fixed block links together into as a whole with the upper wall of tube wall with lower wall, position corresponding with the probe in each water cavity assembly in fixed block 43 is provided with fairlead, the lead-in wire 11 of probe is connected to external unit by fairlead, between fixed block 43 and two sidewalls, there is space, thus form runner 45; Total water inlet is connected with runner; Enter the corresponding position of water nozzle at each of the both sides of tube wall and a drain chamber assembly and be respectively arranged with faucet 46, faucet 46 is communicated with by the apopore being arranged on tube wall 42 with runner 45.
It is finally noted that the object publicizing and implementing example is to help to understand the present invention further, but it will be appreciated by those skilled in the art that: without departing from the spirit and scope of the invention and the appended claims, various substitutions and modifications are all possible.Therefore, the present invention should not be limited to the content disclosed in embodiment, and the scope that the scope of protection of present invention defines with claims is as the criterion.
Claims (10)
1. a Multi-channel water coupling ultrasonic pick-up unit for macrotype tubular structure, it is characterized in that, described pick-up unit comprises: probe, water cavity assembly, calibrating installation and water pipe conversion head more than a point; Wherein, described probe is arranged in water cavity assembly; Multiple water cavity assembly close-packed arrays is in a row; At the two ends of a drain chamber assembly, calibrating installation is set respectively, by securing member and a drain chamber assembly fastening; On a drain chamber assembly, arrange water pipe conversion head more than a point, the two is coaxial, and more than one point, the lower surface of water pipe conversion head presses the probe be arranged in water cavity assembly; The top of each water cavity assembly is provided with into water nozzle, and bottom is provided with apopore; One end of described water pipe conversion head more than a point is provided with total water inlet, and with multiple water cavity assembly to enter water nozzle corresponding, be provided with multiple faucet, be connected with the water nozzle that enters of water cavity assembly respectively by connecting pipe; Water flows into from the total water inlet of water pipe conversion head more than a point, is flowed into respectively and enters water nozzle in water cavity assembly, finally flow out from the apopore of each water cavity assembly by each faucet of water pipe conversion head more than a point; Under the state be not stressed, the lower surface of described calibrating installation exceeds the bottom of water cavity assembly, be placed on the surface of the first contact measured test specimen of lower surface of the process alignment device on test specimen to be measured, complete cambered surface to correct, press down whole pick-up unit afterwards, until the surface of the circular arc of the bottom contact measured test specimen of water cavity assembly.
2. pick-up unit as claimed in claim 1, it is characterized in that, described water cavity assembly comprises assembly, middle assembly and lower assembly; Wherein, be provided with in described upper assembly: probe hole, blasthole, enter water nozzle, the first storage cistern and gutter channel, wherein, probe hole and one or more blasthole are set respectively at the top of upper assembly, described probe is arranged in probe hole, enter water nozzle and insert blasthole, the bottom of described blasthole is communicated with the top of the first storage cistern, and the bottom of described first storage cistern arranges multiple gutter channel; Be provided with the second storage cistern in described middle assembly, the bottom of the multiple gutter channels in upper assembly connects the top of the second storage cistern; The center of described lower assembly is provided with through hole, and the bottom of through hole sets out the mouth of a river, and as the terminal of water cavity assembly, arrange the hard foam block of annular at the outward flange of water delivering orifice, the bottom of described hard foam block exceeds the bottom of water delivering orifice; Water flows into from entering water nozzle, enters the first storage cistern, from the bottom of the first storage cistern through multiple gutter channel, enter the second storage cistern, finally flow out from water delivering orifice through blasthole.
3. pick-up unit as claimed in claim 2, it is characterized in that, the bottom of described upper assembly is provided with external thread, and the top of described lower assembly is provided with external thread, top and the bottom of described middle assembly are respectively arranged with internal thread, are connected respectively with upper assembly and lower assembly.
4. pick-up unit as claimed in claim 2, is characterized in that, the size of described probe hole is designed and sized to reducing hole according to what pop one's head in, and top is provided with shaft shoulder groove, coordinates locate with the shaft shoulder of probe.
5. pick-up unit as claimed in claim 2, it is characterized in that, in upper assembly, also comprise seal groove and O-ring seal, one or more seal groove is around the outer wall of probe hole, and O-ring seal is arranged in seal groove.
6. pick-up unit as claimed in claim 2, is characterized in that, in the both sides of the upper assembly of each water cavity assembly, be respectively arranged with pilot hole, multiple water cavity assembly close-packed arrays is in a row, passes through two registration holes respectively, be connected and fixed by water cavity assembly with two support bars.
7. pick-up unit as claimed in claim 1, it is characterized in that, described calibrating installation comprises slide rail frame, detent, sliding-rail groove, calibration block, spring groove and spring; Wherein, the bottom of described slide rail frame is provided with detent; Sliding-rail groove is respectively arranged with in the both sides of described detent; Described calibration block moves up and down in detent along sliding-rail groove; The bottom surface of described calibration block is circular arc; At the top relative position of slide rail frame and calibration block, be provided with multiple spring groove, between slide rail frame and calibration block, by spring groove, multiple spring be installed.
8. pick-up unit as claimed in claim 1, is characterized in that, described water pipe conversion head more than a point comprises tube wall, total water inlet, fixed block, runner, faucet and fairlead; Wherein, one end of described tube wall is provided with total water inlet; In tube wall, be provided with fixed block, described fixed block is coaxial with tube wall, and the upper wall of described fixed block and tube wall and lower wall connect into as a whole; Position corresponding with the probe in each water cavity assembly in fixed block is provided with fairlead, and the lead-in wire of probe is connected to external unit by fairlead; Between described fixed block and two sidewalls, there is space, thus form runner; Described total water inlet is connected with runner; Faucet is respectively arranged with, described faucet and flow passage with each position entering water nozzle corresponding of a drain chamber assembly in the both sides of tube wall; Thus water flows into from total water inlet, through runner, what flow into corresponding water cavity assembly from each faucet enters water nozzle.
9. pick-up unit as claimed in claim 7, it is characterized in that, calibrating installation pilot hole is respectively arranged with in the both sides of slide rail frame, calibrating installation is connected in the two ends of a drain chamber assembly by support bar by calibrating installation pilot hole, at the two ends of every root support bar, securing member is set respectively, calibrating installation and a drain chamber assembly are fixed.
10. the Multi-channel water coupling ultrasonic detection method of macrotype tubular structure, it is characterized in that, described detection method comprises the following steps:
1) pick-up unit is placed on the surface of test specimen to be measured, press whole pick-up unit, the surface of the circular arc of the bottom arc contact test specimen to be measured of the calibration block of calibrating installation, calibrates, and makes the axes normal of each water cavity assembly in the circular arc of test specimen to be measured;
2) pressure increases, and controlled by the multiple springs be embedded in calibrating installation, calibration block rises in slide rail frame along sliding-rail groove, the surface of the circular arc of hard foam block contact measured test specimen;
3) water in eminence water source is flowed into by the total water inlet of water pipe conversion head more than a point under gravity, and through runner, what flow into corresponding water cavity assembly from each faucet enters water nozzle;
4) from the water entering water nozzle inflow, the first storage cistern is entered through blasthole, from the bottom of the first storage cistern through multiple gutter channel, enter the second storage cistern, finally flow out from water delivering orifice, and be sealed between pick-up unit and test specimen to be measured, now pass through water coincidence propagate ultrasound waves between probe and test specimen to be measured;
5) under the control of mechanical arm and computer software, carry out ultrasonic tesint, one group tested after, pressure is reduced while ensureing sealing, pick-up unit slides on the surface of the circular arc of test specimen to be measured, increases pressure after navigating to next place, repeats step 1) ~ 5), continue test, until automatically complete the C scanning of whole test specimen to be measured.
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| CN108169334A (en) * | 2017-12-18 | 2018-06-15 | 大连交通大学 | Linear phased array two-chamber water shoes structure and the method using the structure detection tube rod circumferential direction and longitudinal crack |
| CN108760886A (en) * | 2018-07-27 | 2018-11-06 | 国家海洋局第海洋研究所 | One kind can water coincidence core parameters,acoustic test platform |
| CN112027010A (en) * | 2020-09-14 | 2020-12-04 | 唐开强 | Intelligent positioning device for preventing reef touch and grounding of ship |
| WO2023075145A1 (en) * | 2021-10-28 | 2023-05-04 | (주)피아이이 | Flow path length-variable ultrasonic waterfall-type inspection device |
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| CN108760886A (en) * | 2018-07-27 | 2018-11-06 | 国家海洋局第海洋研究所 | One kind can water coincidence core parameters,acoustic test platform |
| CN112027010A (en) * | 2020-09-14 | 2020-12-04 | 唐开强 | Intelligent positioning device for preventing reef touch and grounding of ship |
| WO2023075145A1 (en) * | 2021-10-28 | 2023-05-04 | (주)피아이이 | Flow path length-variable ultrasonic waterfall-type inspection device |
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| CN105203631B (en) | 2017-11-28 |
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