CN103962890B - A kind of jet flow immersion supersonic detection method and bubbler - Google Patents
A kind of jet flow immersion supersonic detection method and bubbler Download PDFInfo
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- CN103962890B CN103962890B CN201410182459.8A CN201410182459A CN103962890B CN 103962890 B CN103962890 B CN 103962890B CN 201410182459 A CN201410182459 A CN 201410182459A CN 103962890 B CN103962890 B CN 103962890B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/20—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
A kind of jet flow immersion supersonic detection method of the present invention and bubbler belong to Ultrasonic Nondestructive technical field, relate to a kind of jet flow immersion supersonic detection method and bubbler.Adopt symmetrical radial beam mode to carry out flowing to couplant in detection method to control, ensure to inject flow and initial velocity uniformity; Flow through on passage at couplant and be provided with double-layer porous sieve structure, realize double-deck rectification, to obtain stably stratified flow state.Bubbler is made up of nozzle, the first bolt assembly, the first sealing ring, bubbler matrix, the first liquid injecting mouth, probe cutting ferrule, the second sealing ring and the second liquid injecting mouth.Wide in the anti-circular arc of nozzle, reduce the possibility because of high-pressure flow liquid knockout inwall formation turbulent flow, reduce the turbulence intensity levels on transonic passage.In bubbler, component count is few, compact conformation, simple.The present invention be used for focus type ultrasonic probe jet flow immersion ultrasound detection, realize part at machine, Aulomatizeted Detect, have simple to operate, structure is reliable, efficiency is high.
Description
Technical field
The invention belongs to Ultrasonic Nondestructive technical field, particularly a kind of jet flow immersion supersonic detection method and bubbler.
Background technology
Jet flow immersion ultrasound detection is one of important method of ultrasound detection.In testing process, be immersed in coupling flow field in ultrasonic probe by transmitting focusing supersonic beam and receive reflection echo, workpiece is detected.The method has the advantages such as noncontact, sound wave penetration power is strong, harmless, highly sensitive, automaticity is high, simple to operate, equipment is light, can be applicable to the On-machine Test of large complicated part geometry parameter wall thickness, interior profile etc.
Bubbler is the important component part of jet flow immersion ultrasonic testing system, and the couplant pumped into is carried out rectification process by it, forms stable high-pressure spray fluid column, gets rid of the air between probe and measured piece on the one hand, for ultrasonic propagation provides an escape way; Improve the transmissivity of the sound intensity at liquid/liquid/solid interface on the other hand, to obtain the abundant internal structural information of measured piece.If bubbler structural design is unreasonable, to cause in transonic fluid course, occurring significantly local or unitary turbulence phenomenon, and cause ultrasonic beam energy to disperse further, cause reflection echo signal to noise ratio obviously to reduce, even can not effectively pick out useful waveform signal time serious, cause and detect unsuccessfully.The flow regime regulation and control in coupling flow field are most important for ultrasonic detection precision Reliability Assurance.Therefore, optimal design bubbler structure, effectively controls the flow regime of couplant, farthest reduces the turbulence pulsation speed in coupling flow field, has become one of jet flow immersion ultrasound detection key issue in the urgent need to address.
The structural design of Chinese scholars to jet flow immersion ultrasound detection bubbler is studied.Domestic aspect.2010, Han Zandong etc. have invented the comparatively simple water-spray ultrasonic Non-Destructive Testing nozzle of a kind of structure in patent of invention CN101672828A, but be axially water inlet because profile in nozzle is conical, water intake mode, probe dead ahead turbulent region is large, turbulence intensity is high, causes the measurement noises of turbulence induced remarkable.2012, Xu Zhinong etc. in patent of invention CN102680585A based on Solidworks software platform, propose the Fast design method of a kind of layered combination formula water spray coupling device, to meet different size ultrasonic probe dimensional requirement, structure has certain flexibility, but only consider the geometrical condition such as probe size, ultrasonic wave focal length, the constraint of not mentioned flow field state when designing.External aspect, nineteen ninety-five, K.R.Saripalli etc. devise a kind of water jet towards non-focusing type ultrasonic probe in the patent US5432342 of invention.In order to avoid ultrasonic wave brings clutter to affect in water jet after multipath reflection, select the porous sieve structure having and inhale wave energy material on the one hand, negative angle wedge structure is added on the other hand at delivery port, cause that structure is very complicated, delivery port turbulence intensity is very large, seriously fettered acoustic wave energy propagation, Measurement sensibility is poor.
Summary of the invention
The technical barrier that the present invention mainly solves is the deficiency overcoming the existence of existing bubbler structure, towards the requirement of focus type ultrasonic probe jet flow immersion ultrasound detection, for couplant flow regime and a flow velocity cooperation control difficult problem, based on probe geometry and flow field state mixed constraints, a kind of jet flow immersion supersonic detection method and bubbler are invented.Adopt double-layer porous sieve structure, achieve effective rectification of inject and inspect agent; Wide in the anti-circular arc of nozzle, reduce the possibility because of high-pressure flow liquid knockout inwall formation turbulent flow, reduce the turbulence intensity levels on transonic passage; Bubbler component count is less, compact conformation, simple, and be convenient to assembling, structure space utilization rate is high; The injection field requirements of the different viscosities couplants such as water, machine oil, cutting fluid can be met; This bubbler and ultrasonic probe integrating device are arranged on machine tool chief axis, part geometry parameter can be realized at machine, Aulomatizeted Detect, improve the functional integration of equipment.
The technical solution used in the present invention is a kind of jet flow immersion supersonic detection method, it is characterized in that: in detection method:
1 adopts symmetrical radial beam mode to carry out flowing to couplant controls, to ensure the uniformity injecting flow and initial velocity; Secondly, nozzle 1 Inner exterior feature is designed to anti-circular arc and shrinks profile, and consider that the outlet diameter of nozzle 1 is determined in focus type sound field geometry distributed areas;
2 adopt double-deck rectification mode, flow through on passage at couplant and be provided with double-layer porous sieve structure, the the first annular screen c being evenly equipped with several second sieve apertures h designs in probe cutting ferrule 6 bottom, the the first annular fluid injection chamber formed the first annular fluid injection groove b by bubbler matrix 4 and probe cutting ferrule 6 and the second ring-shaped pouring sap cavity (e) are isolated, the the second annular screen d being evenly equipped with several first sieve apertures g designs on nozzle 1 top, second ring-shaped pouring sap cavity e and nozzle chamber f is isolated, bubbler is decomposed into three fluid injection spaces, realize double-deck rectification mode, to obtain stably stratified flow state in nozzle.
A kind of jet flow immersion supersonic detection method, is characterized in that, the bubbler that detection method adopts forms by spraying the 1, first bolt assembly 2, first sealing ring 3, bubbler matrix 4, first liquid injecting mouth 5, probe cutting ferrule 6, second sealing ring 8 and the second liquid injecting mouth 9; In nozzle 1, exterior feature is that anti-circular arc shrinks profile, namely has nozzle chamber f, has the second annular screen d and the first sieve aperture g in nozzle 1 upper end; Ultrasonic probe 7 upper end being provided with the second sealing ring 8 is arranged in the upper centre bore of bubbler matrix 4, and ultrasonic probe 7 lower end is installed on the middle part of probe cutting ferrule 6; Probe cutting ferrule 6 is installed on the inner chamber of bubbler matrix 4; The nozzle 1 being set with the first sealing ring 3 is arranged on the Step Shaft of probe cutting ferrule 6; Probe cutting ferrule 6 has the first annular fluid injection groove b, the first annular screen c and the second sieve aperture h; Nozzle 1 is installed to bubbler matrix 4 bottom by the first bolt assembly 2 that 4 circumferences are uniform; First liquid injecting mouth 5 and the second liquid injecting mouth 9 are arranged in the both sides screwed hole of bubbler matrix 4 respectively by screw thread.
Remarkable result of the present invention is: adopt exterior feature and double-layer porous sieve structure in symmetrical radial fluid injection mode, anti-circular arc nozzle, ensure that ideal laminar condition; Adopt the anti-circular arc of nozzle to shrink profile, couplant is strong along Way out aggregate capabilities, and the fluid column rigidity of ejection is high; The bubbler invented can be used for focus type ultrasonic probe jet flow immersion ultrasound detection, has simple to operate, that structure is reliable, efficiency is high outstanding advantages.
Accompanying drawing explanation
Accompanying drawing 1 is bubbler sectional view, and accompanying drawing 2 is nozzle arrangements figure, Fig. 3 is probe card noose composition.Wherein: 1-nozzle, 2-first bolt assembly, 3-first sealing ring, 4-bubbler matrix, 5-first liquid injecting mouth, 6-pops one's head in cutting ferrule, 7-ultrasonic probe, 8-second sealing ring, 9-second liquid injecting mouth, a-center line, the annular fluid injection groove of b-first, c-first annular screen, d-second annular screen, e-second ring-shaped pouring sap cavity, f-nozzle chamber, g-first sieve aperture, h-second sieve aperture;
Accompanying drawing 4-at machine ultrasonic measurement schematic diagram, wherein: 10-machine tool chief axis, 11-main shaft changeover mechanism, 12-holding wire, 13-second bolt assembly, 14-bubbler, 15-measured piece.
Detailed description of the invention
The specific embodiment of the present invention is described in detail: be first connected with main shaft changeover mechanism 11 by the second bolt assembly 13 that 4 circumferences are uniform by bubbler 14 below in conjunction with accompanying drawing, then main shaft changeover mechanism 11 is installed on machine tool chief axis 10, Digit Control Machine Tool automatically controls bubbler 14 and moves according to the measuring route designed in advance with ultrasonic probe 7, measure measured piece 15, as shown in Figure 4.
For realizing the ultrasonic reliable detection of jet flow immersion, bubbler 14 must meet ultrasonic probe 6 focus type sound field geometry and couplant flow field state mixed constraints condition, avoid bubbler Inner exterior feature to interfere with ultrasonic field on the one hand, provide stabilized zone flow field and rigidity fluid column on the other hand.
Bubbler structure is assembled: first, the second sealing ring 8 is enclosed within ultrasonic probe 7 top, and ultrasonic probe 7 is installed on the middle part of probe cutting ferrule 6; Secondly, the nozzle 1 being set with the first sealing ring 3 is installed on the Step Shaft of probe cutting ferrule 6 bottom; Then, the assembly of nozzle 1, probe cutting ferrule 6 and ultrasonic probe 7 is put into the inside of bubbler matrix 4; Again, nozzle 1 is installed to bubbler matrix 4 bottom by the first bolt assembly 2 that 4 circumferences are uniform; Finally, the first liquid injecting mouth 5 and the second liquid injecting mouth 9 are arranged on the both sides of bubbler matrix 4 respectively by screw thread, complete bubbler 14 and assemble, as shown in Figure 1.In fig. 1, the center line a of bubbler is also the center line of bubbler matrix 4 and nozzle 1, and the first annular fluid injection chamber is the first annular fluid injection chamber formed with the first annular fluid injection groove b of probe cutting ferrule 6 by bubbler matrix 4.
Couplant flowing controls: as shown in Figure 1, first adopts symmetrical radial beam to ensure that couplant injects the uniformity of flow and initial velocity.Secondly, nozzle 1 Inner exterior feature is designed to anti-circular arc and shrinks profile, and consider that the outlet diameter of nozzle 1 is determined in focus type sound field geometry distributed areas, the couplant entering nozzle 1 inner chamber f is on the one hand strong along Way out aggregate capabilities, outlet pressure can ensure, structure space utilization rate is high on the other hand.For the focus type ultrasonic probe 6 of wafer diameter 16mm, focal length 96mm, the diameter of nozzle 1 is 10mm.Again, flow through on passage at couplant and be provided with double-layer porous sieve structure, as shown in accompanying drawing 2,3.First annular screen c designs in probe cutting ferrule 6 bottom, the the first annular fluid injection chamber formed the first annular fluid injection groove b by bubbler matrix 4 and probe cutting ferrule 6 and the second ring-shaped pouring sap cavity e isolate, and on the first described annular screen c, uniform 80 diameters are the second sieve aperture h of 2mm; Second annular screen d designs on nozzle 1 top, and isolated by the second ring-shaped pouring sap cavity e and nozzle chamber f, on the second described annular screen d, uniform 90 diameters are the first sieve aperture g of 2mm; And then, realize double-deck rectification mode, make the VELOCITY DISTRIBUTION entering nozzle chamber more even, to obtain stably stratified flow state in nozzle; Therefore, first couplant is pumped into first ring shape fluid injection chamber by the first liquid injecting mouth 5 and the second liquid injecting mouth 9 by high pressure, then the second ring-shaped pouring sap cavity e is entered by the first annular screen c on probe cutting ferrule 6, then enter nozzle chamber f by the second annular screen d on nozzle 1, be finally ejected rear formation fluid column on measured piece 15.
On-machine measurement process: first, holding wire 12 is connected with ultrasonic probe 7 through after the via hole of main shaft changeover mechanism 11; Then, main shaft changeover mechanism 11 is arranged on the top of bubbler matrix 4 by the second bolt assembly 13 that 4 circumferences are uniform; And main shaft changeover mechanism 11 is installed on machine tool chief axis 10; Start external hydraulic system, Digit Control Machine Tool controls ultrasonic device for measuring automatically according to the measuring route motion designed in advance, and upper strata acquisition system autostore measurement data, completes automatically measuring at machine of measured piece 15 geometry parameter.
Couplant flow field of the present invention is stable, component count is less, compact conformation, the eject request of the different viscosities couplants such as water, machine oil, cutting fluid can be met, reliable bubbler is provided at machine, automatically detection for jet flow immersion is ultrasonic, be applicable to the focus type ultrasonic probe of various sizes model, practical.
Claims (2)
1. a jet flow immersion supersonic detection method, is characterized in that: in detection method:
1) adopt symmetrical radial beam mode to carry out flowing to couplant to control, to ensure the uniformity injecting flow and initial velocity; Secondly, nozzle (1) Inner exterior feature is designed to anti-circular arc and shrinks profile, and consider that the outlet diameter of nozzle (1) is determined in focus type sound field geometry distributed areas,
2) double-deck rectification mode is adopted, flow through on passage at couplant and be provided with double-layer porous sieve structure, the first annular screen (c) being evenly equipped with several the second sieve apertures (h) is arranged on probe cutting ferrule (6) bottom, the first annular fluid injection chamber that will be formed by bubbler matrix (4) and the first annular fluid injection groove (b) popping one's head in cutting ferrule (6) and the second ring-shaped pouring sap cavity (e) are isolated, the second annular screen (d) being evenly equipped with several the first sieve apertures (g) is arranged on nozzle (1) top, second ring-shaped pouring sap cavity (e) and nozzle chamber (f) are isolated, bubbler is decomposed into three fluid injection spaces, realize double-deck rectification mode, to obtain stably stratified flow state in nozzle.
2. according to a kind of jet flow immersion supersonic detection method according to claim 1, it is characterized in that, the bubbler that detection method adopts is made up of nozzle (1), the first bolt assembly (2), the first sealing ring (3), bubbler matrix (4), the first liquid injecting mouth (5), probe cutting ferrule (6), the second sealing ring (8) and the second liquid injecting mouth (9); In nozzle (1), exterior feature is that anti-circular arc shrinks profile, namely has nozzle chamber (f), has the second annular screen (d) and the first sieve aperture (g) in nozzle (1) upper end; Ultrasonic probe (7) upper end being provided with the second sealing ring (8) is arranged in the upper centre bore of bubbler matrix (4), and ultrasonic probe (7) lower end is installed on the middle part of probe cutting ferrule (6); Probe cutting ferrule (6) is installed on the inner chamber of bubbler matrix (4); The nozzle (1) being set with the first sealing ring (3) is arranged on the Step Shaft of probe cutting ferrule (6); Probe cutting ferrule (6) has the first annular fluid injection groove (b), the first annular screen (c) and the second sieve aperture (h); Nozzle (1) is installed to bubbler matrix (4) bottom by the first bolt assembly (2) that 4 circumferences are uniform; First liquid injecting mouth (5) and the second liquid injecting mouth (9) are arranged in the both sides screwed hole of bubbler matrix (4) respectively by screw thread.
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| CN201410182459.8A CN103962890B (en) | 2014-04-30 | 2014-04-30 | A kind of jet flow immersion supersonic detection method and bubbler |
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| CN201410182459.8A CN103962890B (en) | 2014-04-30 | 2014-04-30 | A kind of jet flow immersion supersonic detection method and bubbler |
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| CN103962890B true CN103962890B (en) | 2015-12-30 |
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| CN111318386A (en) * | 2020-03-31 | 2020-06-23 | 奥瑞视（北京）科技有限公司 | Liquid sprayer for local liquid immersion ultrasonic detection |
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| US5001932A (en) * | 1989-06-22 | 1991-03-26 | General Dynamics Corporation | Ultrasonic squirter |
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| CN111318386A (en) * | 2020-03-31 | 2020-06-23 | 奥瑞视（北京）科技有限公司 | Liquid sprayer for local liquid immersion ultrasonic detection |
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