CN103529122B - A kind of Multifunctional two-way pipeline weld joint ultrasonic detects scanner - Google Patents
A kind of Multifunctional two-way pipeline weld joint ultrasonic detects scanner Download PDFInfo
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Abstract
Invention describes a kind of Multifunctional two-way pipeline weld joint ultrasonic and detect scanner, comprise whole slide main support rod, wave filter and terminal box, handle, digital encoder and magnet-wheel group, the TOFD probe system of two cover correspondences, the creeping wave probe support system of two cover correspondences.The horizontal magnet-wheel spacing of scanner of the present invention is little, can be applicable to the adjustment of curvature on a large scale, therefore, can be used in the detection of the corner bead of small diameter; Two, after probe bracket upper and lower displacement comparatively increases, elbow, concentric reducer butt-weld scanning can be applicable to; Three, voussoir of popping one's head in reduces, and is more applicable to elbow welded junction and detects; Four, by installing climbing probe, a scanning can be implemented to blind area, scanning face, improve work efficiency.
Description
Technical field
The present invention relates to a kind of ultrasound examination scanner, particularly a kind of Multifunctional two-way pipeline weld joint ultrasonic detects scanner.
Background technology
At present in the installation of refinery device, large heavy wall, Large Diameter Pipeline pressure pipeline butt girth welding seam Non-Destructive Testing quantities are increasing; Adopt A type pulse ultrasonic wave to detect, Flaw display is directly perceived, can not display defect shape, and testing result and defectoscopy are affected by human factors greatly, and defects detection evaluates poor repeatability; X ray is adopted to detect more and more difficult even can not detection (penetration power is not enough); Adopt gamma-rays detect security protection tired can (some place do not allow use), detection time is long, detection time is limited, the half life period is short, thus not only cost is high, sensitivity is low, detection efficiency is low, seriously governs the factors such as duration of a project, quality, safety.Expect there is a kind of novel detection method that can overcome above-mentioned detection shortcoming.
TOFD detection technique, i.e. TimeofFlightDiffractionTechnique, look like for diffraction time difference method ultrasonic detecting technology.It is light, flexible that TOFD detection technique has equipment; Particularly applicable to large wall thickness pipeline weld seam detection; Testing result is directly perceived, reproducible, can show in real time; Scanning simultaneously can butt welded seam defect analysis, judge, also printable, deposit, realizes the permanent preservation of testing result; The detection sensitivity high impact of defect waves panel height degree (not by), defect location accurately (along fusion length direction, thickness direction), also can measure the oneself height of defect; Detection speed is fast, efficiency is high, the duration is short; Operation intensity is little, radiationless pollution-free; Round-the-clock detection can be realized simultaneously.This detection technique effectively can solve the deficiency that other detection method exists.
TOFD detection technique is a kind of new detection technique based on diffracted signal examinations, and Chinese is diffraction time difference method ultrasonic detection technology.It is that a kind of diffracted signal of defect end points that mainly utilizes detects and measures the ultrasonic detection method of flaw size that TOFD detects, and usually uses longitudinal wave oblique probe, adopts one to receive a pattern.The longitudinal wave oblique probe symmetry adopting a pair frequency identical in weld seam both sides is placed, the scope of incident angle normally 45 ° ~ 70 °, one as transmitting probe, another is as receiving transducer.At workpiece zero defect position, after launching ultrasonic pulse, what first arrive receiving transducer is straight-through ripple, then bottom reflection echo.When defectiveness exists, between straight-through ripple and bottorm echo, receiving transducer also can receive diffracted wave and the reflection wave of fault location generation.Except above-mentioned ripple, also have the shear wave that rejected region and bottom surface produce because of waveform transformation, generally can be late in bottorm echo and arrive receiving transducer.At the end points up and down of defect, the diffracted wave of generation, its diffraction energy derives from defect end.This two bundles diffracted wave number occurs between straight-through ripple and bottorm echo.The signal of defect two-end-point will be distinguishable in time, can judge the value of flaw height according to the mistiming of diffracted wave signal propagation.
Blind area, scanning face just refers to owing to accounting for wide impact by straight-through ripple in TOFD testing process, the depth range (being generally 0 ~ 6mm) of formation None-identified defect.This region needs to take other attachment approach to carry out supplementing and detect, and in order to improve defect detection rate and detection efficiency, the pop one's head in method of together scanning of creeping wave probe and TOFD can be adopted to detect, formed can analyzing evaluation TOFD collection of illustrative plates with climb ripple collection of illustrative plates.
A sweep is the Signal aspects form amplitude of ultrasonic signal and the relation in travel-time shown with the form of rectangular coordinate, and horizontal ordinate represents the travel-time of sound wave, ordinate representation signal amplitude.It is the most basic a kind of single display mode.
A series of A sweep data assemblies, TOFD image can be obtained by signal transacting conversion.A sweeps the wave amplitude of signal in the picture with the display of gray scale light and shade, is shown the size of amplitude by gray shade scale.The displacement of TOFD one-dimensional coordinate representative probe, another ties up the representation signal delivery time; The identification of the more favourable defect of TOFD image and analysis; Demonstrate the length of defect, depth of burial and oneself height.By to the analysis of image and judgement, draw the quality condition of the weld seam of detected workpiece.
Climbing ripple is a kind of wave of compression propagated under the surface of material, little by the impact that surface of the work is coarse owing to climbing ripple, have effects on surface and the highstrung advantage of near surface flaw, making to climb ripple detection becomes the strong supplementary of conventional TOFD detection, and the detection degree of depth is 2 ~ 12mm simultaneously.Climbing ripple is that compressional wave is when inciding second medium from first medium with the angle near first critical angle, a kind of inhomogeneous wave is produced in second medium, because most of energy during this wave traveling is mainly concentrated under the surface within the scope of certain, thus there is higher detection sensitive to the defect on nearly surface.And insensitive to surface of the work situation, be applicable to shaggy workpiece.Climb ripple when walking along fusion length direction, gather xsect defect in weld seam, be formed as the Signal aspects form shown with the form of rectangular coordinate, be i.e. C scanning, show the planimetric position, defect place in defect length along weld seam longitudinal direction and weld width direction.Creeping wave probe is applicable to detecting the surface of detected weld and near surface flaw, compensate for by the deficiency causing blind area in TOFD probe scanning process.
At present, clearly TOFD detection technique can be used in " fixed safe technology of pressure vessel Supervision Code TSGR0004-2009 " standard of China, the issue of " bearing device Non-Destructive Testing the 10th part: diffraction time difference method Ultrasonic Detection NB/T47013.10-2010 " is simultaneously implemented, but does not mention in " pressure pipeline safety and technical supervision code-industrial pipeline " (TSGD0001-2009) and " Industrial Metal pipework job specifications " (GB50235-2010) TOFD can be used to detect; The application aspect of refinery posted sides pipeline is still blank at home at present for TOFD detection technique, and other industry is also without ripe experience.
TOFD detection system is primarily of hardware system and software systems two large divisions composition.Hardware system: comprise TOFD detected electrons instrument (main frame), TOFD detection scanner, TOFD detection ultrasonic probe and voussoir, the test block of TOFD testing calibration; TOFD detects scanning equipment and comprises: bracing frame, probe bracket, probe positions scrambler, magnet-wheel, probe and voussoir, drive motor (automatically) etc.
Scanner is the key device of TOFD detection technique, structure and the shape of defect detection and scanner have substantial connection, existing scanning equipment is only suitable for container butt-weld and detects, and this scanner has the following aspects to be not suitable for the larger Sizing In Butt Welded Pipes detection of curvature.One, the horizontal magnet-wheel spacing of scanner is comparatively large, is not suitable for the adjustment of curvature on a large scale; Its two, probe bracket upper and lower displacement is less, is not suitable for elbow, concentric reducer butt-weld scanning; Its three, probe voussoir be not suitable for more greatly elbow welded junction detect; Its four, can not install climbing probe, a scanning can not be implemented to blind area, scanning face.
Therefore in order to improve detection technique ability, effectively solving the detection bottleneck in construction, must study in the application of high pressure posted sides pipeline TOFD detection technique, grasp high pressure posted sides pipeline TOFD detection technique as early as possible, promote this technology and in industry apply.Particularly need to develop the scanning equipment being applicable to pipeline girth weld TOFD and detecting, the needs meeting manually and automatically detect.
At present, the welding line detector of prior art, such as, the HS810 portable TOFD binary channels supersonic reflectoscope of Wuhan Branch Innovative Technology Co., Ltd, be provided with whole slide main support rod, wave filter and terminal box, handle, digital encoder and magnet-wheel group, TOFD probe support frame, creeping wave probe bracing frame, probe gripper frame, TOFD probe and voussoir, probe support frame extension spring, probe support frame stretching slideway etc., the detection of diameter at the straight tube weld seam of more than φ 1200mm can be carried out.
But existing scanning equipment is only suitable for container butt-weld and detects, this scanner has the following aspects to be not suitable for the larger Sizing In Butt Welded Pipes detection of curvature.One, the horizontal magnet-wheel spacing of scanner is comparatively large, is not suitable for the adjustment of curvature on a large scale; Its two, probe bracket upper and lower displacement is less, is not suitable for elbow, concentric reducer butt-weld scanning; Its three, probe voussoir be not suitable for more greatly elbow welded junction detect; Its four, can not install climbing probe, a scanning can not be implemented to blind area, scanning face; Its four, for the detection of diameter at the straight tube butt girth welding seam of φ 219 ~ φ 1100mm, the said equipment just very side; Its four, for the detection of corner bead, this HS810 portable TOFD binary channels supersonic reflectoscope is just helpless.。
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of Multifunctional two-way pipeline weld joint ultrasonic and detects scanner, can realize the adjustment of curvature on a large scale; Probe bracket upper and lower displacement is comparatively large, is applicable to elbow, concentric reducer butt-weld scanning; Probe voussoir is applicable to elbow welded junction and detects; And climbing probe is installed, a scanning can not be implemented to blind area, scanning face.
In order to realize the object solved the problems of the technologies described above, present invention employs following technical scheme:
A kind of Multifunctional two-way pipeline weld joint ultrasonic of the present invention detects scanner, comprises whole slide main support rod, wave filter and terminal box, handle, digital encoder and two groups of magnet-wheel groups, the TOFD probe system of two cover correspondences, creeping wave probe support systems of two cover correspondences;
Wherein, slip main support rod be a centre have sliding tray stock, there is fixed filters, scrambler, magnet-wheel group, the effect of probe support frame;
Two groups of magnet-wheel groups are fixed on one end or the two ends of slip main support rod; Digital encoder is fixed in magnet-wheel group; Handle is fixed on the one or both ends of slip main support rod; Be specially: when detecting the weld bond with elbow, two groups of magnet-wheel groups are fixed on one end of slip main support rod; When detecting straight tube docking weld bond, two groups of magnet-wheel groups are fixed on the two ends of slip main support rod;
Magnet-wheel group comprises top fixed part and walking magnet-wheel portion, and two parts are fixedly connected with; Top fixed part is in order to be fixed on slip main support rod by magnet-wheel group; Walking magnet-wheel portion comprises a walking magnet-wheel, can walk along the direction vertical with slip main support rod, under walking magnet-wheel portion is arranged on top fixed part;
Magnet-wheel group comprises fixed part and walking magnet-wheel portion, and two parts are fixedly connected with; Fixed part is in order to be fixed on slip main support rod by magnet-wheel group; Walking magnet-wheel portion comprises the walking magnet-wheel of former and later two same track walkings, can walk along the direction vertical with slip main support rod, under walking magnet-wheel portion is fixed on top fixed part; The axis two ends of walking magnet-wheel are fixed on fixed part;
Wave filter and terminal box are fixed on slip main support rod, and terminal box is in order to connect TOFD probe and creeping wave probe; Wave filter one end is connected with host cable, separates the creeping wave probe jack of 6 passage TOFD probe insertions and 4 passages, used each TOFD and creeping wave probe line is inserted in corresponding location hole, makes it to reach main frame and is connected with probe;
Often overlap TOFD probe system and comprise TOFD probe support frame, probe gripper frame, TOFD probe, voussoir, probe support frame extension spring; TOFD probe support frame is in order to be fixed on slip main support rod by TOFD probe system; Probe gripper frame is fixed on TOFD probe support frame, in order to be positioned by probe, and TOFD can be enable to pop one's head in move at above-below direction, thus make TOFD pop one's head in can test to lower than the position of magnet-wheel of walking; Probe support frame extension spring is arranged on side or the both sides of probe support frame, connects probe gripper frame, TOFD can be made to pop one's head in and adjust position up and down; TOFD probe is arranged in the voussoir in the middle of probe gripper frame; Voussoir is fixed on probe gripper frame; Two cover TOFD probe systems are distributed in the symmetric position of the both sides of same weld seam;
TOFD probe system uses short pulse, broadband, highly sensitive longitudinal wave probe;
The signal of the input of creeping wave probe is the pulsating wave along the walking of weld seam top layer, and distance of creeping is 30 ~ 50mm; The symmetric position of two cover creeping wave probe Operation system setting in the both sides of same weld seam.
Concrete further, the concrete grammar that probe gripper frame is fixed on TOFD probe support frame is: respectively arrange a groove in TOFD probe support frame both sides, probe gripper frame arrange one with the sliding bar of ditch slot fit, bottom sliding bar and probe gripper frame top arranges spring fitting device, on the spring fitting device that probe support frame extension spring is arranged on bottom sliding bar and probe gripper frame top is arranged.Like this, gripper frame of popping one's head in just can move up and down within the specific limits.
Described voussoir can be the voussoir of prior art, the voussoir of the HS810 portable TOFD binary channels supersonic reflectoscope of such as Wuhan Branch Innovative Technology Co., Ltd.
Preferably, described voussoir, when detection for straight tube weld seam, its structure forms by with lower part:
Bottom A, voussoir: be a rectangle metallic object, the length bottom voussoir and width are than being 1:(0.7 ~ 1.3), be highly 30% ~ 70% of width;
B, voussoir top: for xsect is the metallic object of right-angled trapezium, the top margin length of right-angled trapezium is 30% ~ 50% of base length; The base length of right-angled trapezium is the length bottom voussoir; Upper surface bottom the lower surface on voussoir top and voussoir overlaps mutually, the upper surface on voussoir top is the rectangle of the top margin composition of right-angled trapezium, the front and rear surfaces on voussoir top is identical right-angled trapezium face, the left surface on voussoir top is the rectangle dip plane of the hypotenuse composition of right-angled trapezium, and the right surface on voussoir top is that the rectangle of the straight flange composition of right-angled trapezium is faced directly; Be structure as a whole bottom voussoir top and voussoir;
Two Inner bolt holes in C, the upper right corner being positioned at the right surface on voussoir top and bight, the lower right corner, Inner bolt holes is provided with internal thread, and Inner bolt holes vertically penetrates into the lower surface bottom voussoir;
Two Inner bolt holes in D, the upper left corner being positioned at the upper surface on voussoir top and the lower left corner, Inner bolt holes is provided with internal thread, and Inner bolt holes vertically penetrates into the lower surface bottom voussoir;
E, be positioned at each corresponding non-penetrating cylindrical hole of voussoir front and rear surfaces, these two cylindrical holes are and are connected and fixed hole with probe bracket; Inside is arranged without screw thread; This voussoir front and rear surfaces refers to the front surface voussoir front surface dimerous on front surface bottom by voussoir, voussoir top, and by voussoir rear surface dimerous, the rear surface on the rear surface bottom voussoir, voussoir top;
F, be positioned at an adjusting bolt hole of voussoir left-hand face, adjusting bolt has threaded rod in hole, by regulating the position of threaded rod, can regulate or revise the copper sheathing angle in probe voussoir;
A probe circular hole on the rectangle dip plane on G, the upper surface being positioned at voussoir top and voussoir top; Probe circular hole penetrates into the lower surface bottom voussoir; Inlay copper sheathing in probe circular hole, band internal thread in copper sheathing, bottom is inlaid with shape for circle inclined-plane organic glass sheet;
4 the internal strength bolt columns installed in the upper left corner of H, upper surface on voussoir top and two Inner bolt holes in the lower left corner, the upper right corner on the right surface on voussoir top and two Inner bolt holes in the lower right corner, internal strength bolt column can regulate length.
Preferably, described voussoir, when detection for corner bead, its structure forms by with lower part:
Bottom a, voussoir: for xsect is the trapezoidal metallic object of chamfer, top margin length is greater than base length, and the top margin length of right-angled trapezium is 120% ~ 180% of base length; The base length dimension of right-angled trapezium is the length dimension bottom voussoir; Upper surface bottom voussoir be chamfer trapezoidal top margin composition rectangle, the lower surface on the upper surface bottom voussoir and voussoir top overlaps mutually; Lower surface bottom voussoir is the rectangle of the base composition of right-angled trapezium; Front and rear surfaces bottom voussoir is identical chamfer trapezoidal faces, the right surface bottom voussoir be chamfer trapezoidal the rectangle dip plane of hypotenuse composition, the left surface on voussoir top be chamfer trapezoidal the rectangle vertical plane of straight flange composition;
B, voussoir top: for xsect is the metallic object of right-angled trapezium, the top margin length of right-angled trapezium is 30% ~ 50% of base length; The base of right-angled trapezium is the top margin bottom voussoir; Upper surface bottom the lower surface on voussoir top and voussoir overlaps mutually, the upper surface on voussoir top is the rectangle of the top margin composition of right-angled trapezium, the front and rear surfaces on voussoir top is identical right-angled trapezium face, the right surface on voussoir top be right-angled trapezium the rectangle dip plane of hypotenuse composition, the left surface on voussoir top be right-angled trapezium the rectangle vertical plane of straight flange composition; Be structure as a whole bottom voussoir top and voussoir;
C, be positioned at two Inner bolt holes in the Liang Ge bight, the left side of the upper surface on voussoir top, Inner bolt holes vertically penetrates into the lower surface bottom voussoir, and Inner bolt holes is provided with internal thread;
D, be positioned at the right surface on voussoir top, two Inner bolt holes of two side positions before and after surface, have screw thread in Inner bolt holes, Inner bolt holes vertically penetrates into the lower surface bottom voussoir;
E, be positioned at each fixed orifice of voussoir front and rear surfaces, fixed orifice, for be connected and fixed hole with probe bracket, innerly to be arranged without screw thread; This voussoir front and rear surfaces refers to the front surface voussoir front surface dimerous on front surface bottom by voussoir, voussoir top, and by voussoir rear surface dimerous, the rear surface on the rear surface bottom voussoir, voussoir top;
F, be positioned at a threaded adjusting bolt hole of voussoir left-hand face, adjusting bolt has threaded rod in hole, and threaded rod can regulate or revise the copper sheathing angle in probe voussoir, namely can adjusting wedge angle;
A probe circular hole on the rectangle dip plane on g, the upper surface being positioned at voussoir top and voussoir top; The lower surface that probe circular hole tilts to penetrate into bottom voussoir; Inlay copper sheathing, copper sheathing band internal thread in probe circular hole, be inlaid with shape bottom copper sheathing for circle inclined-plane organic glass sheet;
4 internal strength bolt columns that h, four internal thread holes being positioned at the right surface on voussoir top and the upper surface bight on voussoir top are installed.This internal strength bolt column can regulate length, can play making probe voussoir should not swing effect at direction of travel when scanning is walked when carrying out pipe butt-weld and detecting.
This patent, by reducing the horizontal magnet-wheel spacing of scanner and split being changed into one, is applicable to comparatively pipe with small pipe diameter weld seam detection; Solve circumference walking not depart from or distortion simultaneously; Probe bracket increases upper and lower displacement distance, is applicable to elbow, the first-class butt-weld scanning of size; Voussoir bottom lengths direction is shortened.Solve probe and have good surface of contact at elbow inner arc and outer arc; Width both sides on original probe voussoir are respectively processed two Inner bolt holes, solves probe plane and do not swing during scanning in pipeline cambered surface and be in plateau; It is φ 219mm and above pipeline are done circumference walking that the automatic scanning device of research and development is adapted at specification, and have controlled speed device and advance, retrogressing, deflection function, scanning once completes, and does not stay dead angle, without detection leakage phenomenon.
These technical schemes, the technical scheme comprising improvement also can combine mutually or combine, thus reaches better technique effect.
By adopting technique scheme, a kind of Multifunctional two-way pipeline weld joint ultrasonic of the present invention detects scanner, has following beneficial effect:
One, the horizontal magnet-wheel spacing of scanner is little, can be applicable to the adjustment of curvature on a large scale, therefore, can be used in the detection of the corner bead of small diameter;
Two, after probe bracket upper and lower displacement comparatively increases, elbow, concentric reducer butt-weld scanning can be applicable to;
Three, voussoir of popping one's head in reduces, and is more applicable to elbow welded junction and detects;
Four, by installing climbing probe, a scanning can be implemented to blind area, scanning face, improve work efficiency.
Accompanying drawing explanation
Fig. 1 is the HS810 portable TOFD binary channels supersonic reflectoscope structural representation of prior art.
Fig. 2 is that the Multifunctional two-way pipeline weld joint ultrasonic of this patent detects scanner front elevational schematic.
Fig. 3, Fig. 4 are the partial enlarged drawings of Fig. 2.
Fig. 5 is that the Multifunctional two-way pipeline weld joint ultrasonic of this patent detects scanner overall schematic.In figure, eliminate two creeping wave probe systems, this creeping wave probe system can be arranged between TOFD probe system, but the probe support frame of the direction of creeping wave probe bracing frame and TOFD probe system lays respectively at slip main support rod both sides, make creeping wave probe be positioned at the opposite side of slip main support rod, be convenient to integral layout.
Fig. 6, Fig. 7 and Fig. 8 are the partial enlarged drawings of Fig. 5.
Fig. 9 is the voussoir overall schematic that may be used for straight tube weld seam of this patent.In this figure, right surperficial two circular holes being positioned at voussoir top lay respectively at a depression platform in bight.
Figure 10 is that schematic diagram is looked on a left side of Fig. 9.
Figure 11 is a sectional view of Fig. 9.
Figure 12 is the schematic bottom view bottom the voussoir of Fig. 9.
Figure 13 is the voussoir overall schematic that may be used for corner bead of this patent.In this figure, dotted line represents the boundary with voussoir top bottom voussoir.
Figure 14 is the schematic bottom view bottom the voussoir that may be used for corner bead of this patent.
Figure 15 is the voussoir sectional view that may be used for corner bead of this patent.
In figure, 1. slip main support rod; 2. wave filter and terminal box; 3. handle (a pair); 4. digital encoder and magnet-wheel group; 5. magnet-wheel group; 6.TOFD probe support frame (a pair); 7. creeping wave probe bracing frame (a pair); 8. to pop one's head in gripper frame (two to); 9.TOFD probe and voussoir; 10. probe support frame extension spring; 11. probe support frame stretching slideways; 12. creeping wave probes and voussoir; 13. voussoirs.
131. cylindrical hole; 132. probe circular holes; Width bottom 133. voussoirs; Height bottom 134. voussoirs; The upper surface on 135. voussoir tops; The front surface on 136. voussoir tops; The left surface on 137. voussoir tops; Body of bolt in the Inner bolt holes in the bight, left surface on 138. voussoir tops and Inner bolt holes; The Inner bolt holes in the upper surface bight on 139. voussoir tops; 1310. voussoir left-hand face; 1311. adjusting bolt hole; 1312. copper sheathing.
141. fixed orifice; 142. probe circular holes; Base bottom 143. voussoirs; Height bottom 144. voussoirs; The upper surface on 145. voussoir tops; The front surface on 146. voussoir tops; The left surface on 147. voussoir tops; The Inner bolt holes of the right surface corner on 148. voussoir tops; The Inner bolt holes in the upper surface bight on 149. voussoir tops; 1410. copper sheathing; 1411. organic glass sheet; 1412. adjusting bolt hole.
Except Figure 11, the data connecting line in all the other each figure, power lead all omit and do not show.Fixture handle does not show, but can be arranged on the appropriate location of slip main support rod as required, detects scanner for mobile multifunctional binary channels weld joint ultrasonic.
Embodiment
Below in conjunction with drawings and Examples, further explanation is explained to this patent.But the protection domain of this patent is not limited to concrete embodiment.
Embodiment 1
As shown in Fig. 2-Figure 15, the Multifunctional two-way pipeline weld joint ultrasonic of this patent detects scanner, comprises the creeping wave probe support system that whole slide main support rod 1, wave filter and terminal box, handle, digital encoder and magnet-wheel group 5, two overlap corresponding TOFD probe system, two cover correspondences;
Wherein, slip main support rod 1 be a centre have sliding tray stock; There is fixed filters, scrambler, magnet-wheel group, the effect of probe support frame;
Magnet-wheel group 5 is fixed on one end (detecting the weld bond with elbow) or two ends (the detecting straight tube docking weld bond) of slip main support rod 1; Digital encoder is fixed in magnet-wheel group 5 or on TOFD probe; Handle is fixed on one end or the two ends of slip main support rod 1;
Magnet-wheel group 5 comprises top fixed part and walking magnet-wheel portion, and two parts are fixedly connected with; Top fixed part is in order to be fixed on slip main support rod 1 by magnet-wheel group 5; Walking magnet-wheel portion comprises a walking magnet-wheel, can walk along the direction vertical with slip main support rod 1, under walking magnet-wheel portion is arranged on top fixed part;
Magnet-wheel group 5 comprises fixed part and walking magnet-wheel portion, and two parts are fixedly connected with; Fixed part is in order to be fixed on slip main support rod 1 by magnet-wheel group 5; Walking magnet-wheel portion comprises the walking magnet-wheel of former and later two same track walkings, can walk along the direction vertical with slip main support rod 1, under walking magnet-wheel portion is fixed on top fixed part; The axis two ends of walking magnet-wheel are fixed on fixed part;
Wave filter and terminal box are fixed on slip main support rod 1; Wherein, terminal box is in order to connect the signal of TOFD probe and TOFD probe, wave filter one end is connected with host cable, separate the creeping wave probe jack of 6 passage TOFD probe insertions and 4 passages, used each TOFD and creeping wave probe line are inserted in corresponding location hole, makes it to reach main frame and be connected with probe); Terminal box is in order to connect TOFD probe and creeping wave probe.
Often overlap TOFD probe system and comprise TOFD probe support frame 6, probe gripper frame 8, TOFD probe, voussoir 13, probe support frame extension spring 10; TOFD probe support frame 6 is in order to be fixed on slip main support rod 1 by TOFD probe system; Probe gripper frame 8 is fixed on TOFD probe support frame 6, in order to be positioned by probe, and TOFD can be enable to pop one's head in move at above-below direction, thus make TOFD pop one's head in can test to lower than the position of magnet-wheel of walking; Probe support frame extension spring 10 is arranged on side or the both sides of probe support frame, connects probe gripper frame 8, TOFD can be made to pop one's head in and adjust position up and down; TOFD probe is arranged in the voussoir 13 in the middle of probe gripper frame 8; Voussoir 13 is fixed on probe gripper frame 8; Two cover TOFD probe systems are distributed in the both sides of same weld seam;
TOFD probe uses short pulse, broadband, highly sensitive longitudinal wave probe, what TOFD popped one's head in that wafer adopts is piezo-electricity composite material that piezoelectric ceramics and high molecular polymer are composited is made single crystal probe, generation be diffracted signal.
Creeping wave probe structure is identical with the structure that pulsating wave is popped one's head in, and the signal of input is the pulsating wave along the walking of weld seam top layer, and distance of creeping is 30 ~ 50mm; The symmetric position of two cover creeping wave probe Operation system setting in the both sides of same weld seam.
The method that probe gripper frame 8 is fixed on TOFD probe support frame 6 is: respectively arrange a groove in TOFD probe support frame 6 both sides, probe gripper frame 8 arrange one with the sliding bar of ditch slot fit, bottom sliding bar and probe gripper frame 8 top arranges spring fitting device, on the spring fitting device that probe support frame extension spring 10 is arranged on bottom sliding bar and probe gripper frame 8 top is arranged.Like this, gripper frame 8 of popping one's head in just can move up and down within the specific limits.
Voussoir is identical with the voussoir of the HS810 of the Wuhan Branch Innovative Technology Co., Ltd of prior art portable TOFD binary channels supersonic reflectoscope.
The probe bracket of product increases upper and lower displacement distance, is applicable to elbow, the first-class butt-weld scanning of size; Voussoir bottom lengths direction is shortened, makes probe have good surface of contact at elbow inner arc and outer arc; Width both sides on probe voussoir respectively process two Inner bolt holes, solve probe plane and do not swing during scanning in pipeline cambered surface and be in plateau.
Device can be φ 219mm and above pipeline are done circumference walking in specification, can advance, retreat, deflection function, and scanning once completes, and does not stay dead angle.
Claims (3)
1. Multifunctional two-way pipeline weld joint ultrasonic detects a scanner, comprises whole slide main support rod, wave filter and terminal box, handle, digital encoder and magnet-wheel group, the TOFD probe system of two cover correspondences, the creeping wave probe support system of two cover correspondences; It is characterized in that: wherein, slip main support rod be a centre have sliding tray stock, there is fixed filters, scrambler, magnet-wheel group, the effect of probe support frame;
Two groups of magnet-wheel groups are fixed on one end or the two ends of slip main support rod; Digital encoder is fixed in magnet-wheel group; Handle is fixed on the one or both ends of slip main support rod;
Magnet-wheel group comprises top fixed part and walking magnet-wheel portion, and two parts are fixedly connected with; Top fixed part is in order to be fixed on slip main support rod by magnet-wheel group; Walking magnet-wheel portion comprises a walking magnet-wheel, can walk along the direction vertical with slip main support rod, under walking magnet-wheel portion is arranged on top fixed part;
Magnet-wheel group comprises fixed part and walking magnet-wheel portion, and two parts are fixedly connected with; Fixed part is in order to be fixed on slip main support rod by magnet-wheel group; Walking magnet-wheel portion comprises the walking magnet-wheel of former and later two same track walkings, can walk along the direction vertical with slip main support rod, under walking magnet-wheel portion is fixed on top fixed part; The axis two ends of walking magnet-wheel are fixed on fixed part;
Wave filter and terminal box are fixed on slip main support rod, and terminal box is in order to connect TOFD probe and creeping wave probe; Wave filter one end is connected with host cable, separates the creeping wave probe jack of 6 passage TOFD probe insertions and 4 passages, used each TOFD and creeping wave probe line is inserted in corresponding location hole, makes it to reach main frame and is connected with probe;
Often overlap TOFD probe system and comprise TOFD probe support frame, probe gripper frame, TOFD probe, voussoir, probe support frame extension spring; TOFD probe support frame is in order to be fixed on slip main support rod by TOFD probe system; Probe gripper frame is fixed on TOFD probe support frame, in order to be positioned by probe, and TOFD can be enable to pop one's head in move at above-below direction, thus make TOFD pop one's head in can test to lower than the position of magnet-wheel of walking; Probe support frame extension spring is arranged on side or the both sides of probe support frame, connects probe gripper frame, TOFD can be made to pop one's head in and adjust position up and down; TOFD probe is arranged in the voussoir in the middle of probe gripper frame; Voussoir is fixed on probe gripper frame; Two cover TOFD probe systems are distributed in the symmetric position of the both sides of same weld seam;
TOFD probe system uses short pulse, broadband, highly sensitive longitudinal wave probe;
The signal of the input of creeping wave probe is the pulsating wave along the walking of weld seam top layer, and distance of creeping is 30 ~ 50mm; The symmetric position of two cover creeping wave probe Operation system setting in the both sides of same weld seam;
The concrete grammar that described probe gripper frame is fixed on TOFD probe support frame is: respectively arrange a groove in TOFD probe support frame both sides, probe gripper frame arrange one with the sliding bar of ditch slot fit, bottom sliding bar and probe gripper frame top arranges spring fitting device, on the spring fitting device that probe support frame extension spring is arranged on bottom sliding bar and probe gripper frame top is arranged.
2. Multifunctional two-way pipeline weld joint ultrasonic detects scanner according to claim 1, it is characterized in that: described voussoir, and when detection for straight tube weld seam, its structure forms by with lower part:
Bottom A, voussoir: be a rectangle metallic object, the length bottom voussoir and width are than being 1:(0.7 ~ 1.3), be highly 30% ~ 70% of width;
B, voussoir top: for xsect is the metallic object of right-angled trapezium, the top margin length of right-angled trapezium is 30% ~ 50% of base length; The base length of right-angled trapezium is the length bottom voussoir; Upper surface bottom the lower surface on voussoir top and voussoir overlaps mutually, the upper surface on voussoir top is the rectangle of the top margin composition of right-angled trapezium, the front and rear surfaces on voussoir top is identical right-angled trapezium face, the left surface on voussoir top is the rectangle dip plane of the hypotenuse composition of right-angled trapezium, and the right surface on voussoir top is that the rectangle of the straight flange composition of right-angled trapezium is faced directly; Be structure as a whole bottom voussoir top and voussoir;
Two Inner bolt holes in C, the upper right corner being positioned at the right surface on voussoir top and bight, the lower right corner, Inner bolt holes is provided with internal thread, and Inner bolt holes vertically penetrates into the lower surface bottom voussoir;
Two Inner bolt holes in D, the upper left corner being positioned at the upper surface on voussoir top and the lower left corner, Inner bolt holes is provided with internal thread, and Inner bolt holes vertically penetrates into the lower surface bottom voussoir;
E, be positioned at each corresponding non-penetrating cylindrical hole of voussoir front and rear surfaces, these two cylindrical holes are and are connected and fixed hole with probe bracket; Inside is arranged without screw thread; This voussoir front and rear surfaces refers to the front surface voussoir front surface dimerous on front surface bottom by voussoir, voussoir top, and by voussoir rear surface dimerous, the rear surface on the rear surface bottom voussoir, voussoir top;
F, be positioned at an adjusting bolt hole of voussoir left-hand face, adjusting bolt has threaded rod in hole, by regulating the position of threaded rod, can regulate or revise the copper sheathing angle in probe voussoir;
A probe circular hole on the rectangle dip plane on G, the upper surface being positioned at voussoir top and voussoir top; Probe circular hole penetrates into the lower surface bottom voussoir; Inlay copper sheathing in probe circular hole, band internal thread in copper sheathing, bottom is inlaid with shape for circle inclined-plane organic glass sheet;
4 the internal strength bolt columns installed in the upper left corner of H, upper surface on voussoir top and two Inner bolt holes in the lower left corner, the upper right corner on the right surface on voussoir top and two Inner bolt holes in the lower right corner, internal strength bolt column can regulate length.
3. Multifunctional two-way pipeline weld joint ultrasonic detects scanner according to claim 1, it is characterized in that: two groups of described magnet-wheel group fixed forms are: when detecting straight tube docking weld bond, two groups of magnet-wheel groups are fixed on the two ends of slip main support rod.
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| CN104777223A (en) | 2015-07-15 |
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Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: China National Petroleum Corporation Patentee after: China Petroleum & Natural Gas Construction Co., Ltd. Address before: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee before: China National Petroleum Corporation Patentee before: China Petroleum Natural Gas No.1 Construction Co. |