CN203502389U - Ultrasonic detection probe wedge block adopting time-of-flight diffraction method for welding joint of bending tube - Google Patents
Ultrasonic detection probe wedge block adopting time-of-flight diffraction method for welding joint of bending tube Download PDFInfo
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- CN203502389U CN203502389U CN201320418265.4U CN201320418265U CN203502389U CN 203502389 U CN203502389 U CN 203502389U CN 201320418265 U CN201320418265 U CN 201320418265U CN 203502389 U CN203502389 U CN 203502389U
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Abstract
The utility model discloses an ultrasonic detection probe wedge block adopting a time-of-flight diffraction method for the welding joint of a bending tube. The ultrasonic detection probe wedge block comprises a trapezoidal metal body wedge block bottom, a wedge block top with a cross section which is in the shape of a right-angled trapezoid, four cut-through inner bolt holes in the wedge block top, two fixing holes in the front surface and the rear surface of the wedge block, a probe angle correction adjusting bolt hole, and a probe circular hole cutting through the wedge block bottom, wherein two inner bolt holes are formed in the both sides of the original probe wedge block in the width direction respectively, thus ensuring that a probe plane does not swing and is in a steady state in case of being scanned on the arc surface of the tube; the original wedge block bottom is shortened in the length direction, thus ensuring that the probe is provided with good contact surfaces on the inner arc and the outer arc of an elbow; the stretching heights of screw rods in the holes can be adjusted through the four circular holes in the wedge block top, a rectangular inclined surface, and the upper surface corners of the wedge block top, thus ensuring that the probe wedge block is fixed and not easy to swing to the left and right.
Description
Technical field
The utility model relates to a kind of pipe welding seam detection technique, particularly a kind of corner bead diffraction time difference method ultrasonic inspection probe voussoir.
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 not directly perceived, can not display defect shape, and testing result and defectoscopy are affected by human factors greatly, and defects detection is evaluated poor repeatability; Adopt X ray to detect more and more difficult even can not detect (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, thereby not only cost is high, sensitivity is low, detection efficiency is low, is seriously restricting the factors such as duration of a project, quality, safety.Expect to have a kind of novel detection method that can overcome above-mentioned detection shortcoming.
TOFD detection technique, Time of Flight Diffraction Technique, looks 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; Detection sensitivity high (not being subject to the impact of defect waves panel height degree), 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; Can realize round-the-clock detection simultaneously.This detection technique can effectively 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 a kind of ultrasonic detection method that mainly utilizes the diffracted signal detection of defect end points and measure flaw size that TOFD detects, and conventionally uses longitudinal wave oblique probe, adopts one to receive a pattern.In weld seam both sides, adopt that the identical longitudinal wave oblique probe of a pair of frequency is symmetrical to be placed, normally 45 °～70 ° of the scopes of incident angle, one as transmitting probe, and another is as receiving transducer.At workpiece zero defect position, after transmitting 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 that fault location produces.Except above-mentioned ripple, also have rejected region and bottom surface because of the shear wave that waveform transformation produces, generally can be late and arrive receiving transducer in bottorm echo.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, and the mistiming of propagating according to diffracted wave signal can be judged the value of flaw height.
Scanning face blind area just refers in TOFD testing process and accounts for wide impact owing to being subject to lead directly to ripple, forms the depth range (being generally 0～6mm) of None-identified defect.This region need to take other attachment approach to supplement detection, in order to improve defect detection rate and detection efficiency, can adopt the pop one's head in method of together scanning of creeping wave probe and TOFD to detect, the TOFD collection of illustrative plates that formation can analyzing evaluation and climb ripple collection of illustrative plates.
A sweep is the signal display format that the relation in the amplitude of ultrasonic signal and travel-time is shown with the form of rectangular coordinate, and horizontal ordinate represents the travel-time of sound wave, ordinate represent signal magnitude.It is the most basic a kind of single display mode.
A series of A sweep data combinations, by signal, process conversion and can obtain TOFD image.The wave amplitude that A sweeps signal shows with gray scale light and shade in image, shows the size of amplitude by gray shade scale.TOFD mono-dimension coordinate representative probe displacement, another ties up the representation signal delivery time; Identification and the analysis of the more favourable defect of TOFD image; Demonstrate length, depth of burial and the oneself height of defect.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 of propagating under the surface of material, owing to climbing ripple, be subject to the coarse impact of surface of the work little, have the highstrung advantage of effects on surface and near surface flaw, making to climb ripple detection becomes strong the supplementing that conventional TOFD detects simultaneously, and the detection degree of depth is 2～12mm.Climb ripple and be compressional wave when first medium incides second medium with near angle first critical angle, in second medium, produce a kind of inhomogeneous wave, most of energy while propagating due to this ripple mainly concentrates on surface and descends within the scope of certain, thereby has higher detection sensitive to the defect on nearly surface.And insensitive to surface of the work situation, be applicable to shaggy workpiece.Climb ripple while walking along fusion length direction, gather xsect defect in weld seam, show along the weld seam planimetric position, defect place of defect length and weld width direction longitudinally.Creeping wave probe is applicable to the surface of detected weld and near surface flaw to detect, and has made up the deficiency that causes blind area in TOFD probe scanning process.
At present, in the fixed safe technology of pressure vessel Supervision Code of the < < TSG R0004-2009 > > standard of China, clearly can use TOFD detection technique, while < < bearing device Non-Destructive Testing the 10th part: the issue of diffraction time difference method Ultrasonic Detection NB/T47013.10-2010 > > is implemented, but mention in < < pressure pipeline safety and technical supervision rules-industrial pipeline > > (TSG D0001-2009) and < < Industrial Metal pipework job specifications > > (GB50235-2010), can not use TOFD 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 mainly comprised of hardware system and software systems two large divisions.Hardware system: comprise that TOFD detected electrons instrument (main frame), TOFD detect 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 Sizing In Butt Welded Pipes detection that curvature is larger.One, the horizontal magnet-wheel spacing of scanner is larger, 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 is not suitable for more greatly elbow welded junction and detects; Its four, climbing probe can not be installed, to scanning face blind area, can not implement a scanning.
Therefore in order to improve detection technique ability, effectively solve the detection bottleneck in construction, must in the application of high pressure posted sides pipeline, study TOFD detection technique, grasp as early as possible high pressure posted sides pipeline TOFD detection technique, promote this technology and in industry apply.Particularly need development to be applicable to the scanning equipment that pipeline girth weld TOFD detects, meet manually and the needs that automatically detect.
At present, the welding line detector of prior art, for example, and the portable TOFD binary channels of the HS810 of Wuhan Branch Innovative Technology Co., Ltd supersonic reflectoscope, probe is fixed on probe bracket, and voussoir is fixed on the front portion of probe.And the pipeline detecting is as required different, need different detecting devicess.
Through research, applicant has developed modified diffraction time difference method ultrasonic detection equipment, wherein, for different straight tube weld seam and corner beads, needs different probe voussoirs, steady non-oscillatory technical requirement while reaching scanning.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of corner bead diffraction time difference method ultrasonic inspection probe voussoir, steady non-oscillatory technical requirement while reaching scanning.
In order to realize the object solving the problems of the technologies described above, the utility model has adopted following technical scheme:
A kind of corner bead diffraction time difference method ultrasonic inspection probe voussoir of the present utility model, is comprised of following part:
A, voussoir bottom: 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 of voussoir bottom; The upper surface of voussoir bottom is the rectangle that the trapezoidal top margin of chamfer forms, and the upper surface of voussoir bottom and the lower surface on voussoir top overlap mutually; The rectangle that the base that the lower surface of voussoir bottom is right-angled trapezium forms; The front and rear surfaces of voussoir bottom is identical chamfer trapezoidal faces, the right surface of voussoir bottom be chamfer trapezoidal the rectangle dip plane that forms of hypotenuse, the left surface on voussoir top be chamfer trapezoidal the rectangle vertical plane that forms of straight flange;
B, voussoir top: be the metallic object that xsect is 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 of voussoir bottom; The upper surface of the lower surface on voussoir top and voussoir bottom overlaps mutually, the upper surface on voussoir top is the rectangle that the top margin of right-angled trapezium forms, the front and rear surfaces on voussoir top is identical right-angled trapezium face, the rectangle dip plane that the hypotenuse that the right surface on voussoir top is right-angled trapezium forms, the rectangle vertical plane that the straight flange that the left surface on voussoir top is right-angled trapezium forms; Voussoir top and voussoir bottom are structure as a whole;
C, be positioned at two inner bolt holes in Liang Ge bight, the left side of the upper surface on voussoir top, inner bolt hole vertically penetrates into the lower surface of voussoir bottom, and inner bolt hole is provided with internal thread;
D, be positioned at two inner bolt holes of two side positions before and after the right surface surface on voussoir top, inner bolt has screw thread in hole, and inner bolt hole vertically penetrates into the lower surface of voussoir bottom;
E, be positioned at each fixed orifice of voussoir front and rear surfaces, fixed orifice is for to be connected and fixed hole with probe bracket, and inside is without screw thread setting; This voussoir front and rear surfaces refers to by the front surface of voussoir bottom, the front surface voussoir front surface dimerous on voussoir top, and by the rear surface of voussoir bottom, the voussoir dimerous rear surface, rear surface on 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, can adjusting wedge angle;
A probe circular hole on the rectangle dip plane on G, the upper surface that is positioned at voussoir top and voussoir top; Probe circular hole tilts to penetrate into the lower surface of voussoir bottom; In probe circular hole, inlay copper sheathing, copper sheathing band internal thread, copper sheathing bottom is inlaid with and is shaped as round inclined-plane organic glass sheet.
H, be positioned at 4 internal strength bolt columns that four internal thread holes in 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 the voussoir that makes to pop one's head in should not swing effect at direction of travel when scanning is walked managing when butt-weld is detected.
By being that voussoir left and right directions shortens by original voussoir bottom lengths direction, having solved probe has good surface of contact at elbow inner arc and outer arc,
By at four circular holes voussoir top and upper surface bight rectangle dip plane and voussoir top, and the height of threaded rod regulates, and can reach probe and being difficult for the technique effect swinging at direction of travel.
By adopting technique scheme, the utlity model has following beneficial effect:
By the Width both sides on original probe voussoir, respectively process two fixed orifices, solved probe plane and do not swung in plateau during scanning in pipeline cambered surface;
By original voussoir bottom lengths direction (before and after voussoir) is shortened, having solved probe has good surface of contact at elbow inner arc and outer arc;
By at four circular holes voussoir top and upper surface bight rectangle dip plane and voussoir top, and the height of threaded rod regulates, and can reach probe and being difficult for the technique effect swinging at direction of travel.
Accompanying drawing explanation
Fig. 1 is the probe voussoir of prior art.
Fig. 2 is the corner bead diffraction time difference method ultrasonic inspection probe voussoir overall schematic of this patent.In this figure, dotted line represents the boundary on voussoir bottom and voussoir top.
Fig. 3 is the schematic bottom view of the corner bead diffraction time difference method ultrasonic inspection probe voussoir bottom of this patent.
Fig. 4 is the corner bead diffraction time difference method ultrasonic inspection probe voussoir sectional view of this patent.
In figure, 131. fixed orifices; 132. probe circular holes; The base of 133. voussoir bottoms; The height of 134. voussoir bottoms; The upper surface on 135. voussoir tops; The front surface on 136. voussoir tops; The left surface on 137. voussoir tops; The inner bolt hole in the right surperficial bight on 138. voussoir tops; The inner bolt hole in the upper surface bight on 139. voussoir tops; 1310. copper sheathing; 1311. organic glass sheet; 1312. adjusting bolt hole.
Embodiment
Below in conjunction with accompanying drawing, this patent is further explained.But the protection domain of this patent is not limited to concrete embodiment.
Embodiment 1
As in Figure 2-4, a kind of corner bead diffraction time difference method ultrasonic inspection probe voussoir of this patent, is comprised of following part:
A, voussoir bottom: for xsect is the trapezoidal metallic object of chamfer, top margin length is greater than base 133 length, and the top margin length of right-angled trapezium is 150% of base length; The base length dimension of right-angled trapezium is the length dimension of voussoir bottom; The upper surface of voussoir bottom is the rectangle that the trapezoidal top margin of chamfer forms, and the upper surface of voussoir bottom and the lower surface on voussoir top overlap mutually; The rectangle that the base that the lower surface of voussoir bottom is right-angled trapezium forms; The front and rear surfaces of voussoir bottom is identical chamfer trapezoidal faces, the right surface of voussoir bottom be chamfer trapezoidal the rectangle dip plane that forms of hypotenuse, the left surface 137 on voussoir top be chamfer trapezoidal the rectangle vertical plane of straight flange composition;
B, voussoir top: be the metallic object that xsect is right-angled trapezium, the top margin length of right-angled trapezium is 35% of base length; The base of right-angled trapezium is the top margin of voussoir bottom; The upper surface of the lower surface on voussoir top and voussoir bottom overlaps mutually, the rectangle that the top margin that the upper surface 135 on voussoir top is right-angled trapezium forms, the front surface 136 on voussoir top, rear surface are identical right-angled trapezium face, the rectangle dip plane that the hypotenuse that the right surface on voussoir top is right-angled trapezium forms, the rectangle vertical plane of the straight flange composition that the left surface 137 on voussoir top be right-angled trapezium; Voussoir top and voussoir bottom are structure as a whole;
C, be positioned at two inner bolt holes 139 in Liang Ge bight, the left side of the upper surface 135 on voussoir top, inner bolt hole 139 vertically penetrates into the lower surface of voussoir bottom, and inner bolt hole 139 is provided with internal thread;
D, be positioned at two inner bolt holes 138 of two side positions before and after the right surface surface on voussoir top, in inner bolt hole 138, have screw thread, inner bolt hole 138 vertically penetrates into the lower surface of voussoir bottom;
E, be positioned at each fixed orifice 131 of voussoir front and rear surfaces, fixed orifice 131 is for to be connected and fixed hole with probe bracket, and inside is without screw thread setting; This voussoir front and rear surfaces refers to by the front surface of voussoir bottom, the front surface 136 voussoir front surface dimerous on voussoir top, and by the rear surface of voussoir bottom, the voussoir dimerous rear surface, rear surface on voussoir top;
F, be positioned at a threaded adjusting bolt hole 1312 of voussoir left-hand face, in adjusting bolt hole 1312, have threaded rod, threaded rod can regulate or revise copper sheathing 1310 angles in probe voussoir, can adjusting wedge angle;
G, be positioned on the upper surface 135 on voussoir top and the rectangle dip plane on voussoir top one probe circular hole 132; Probe circular hole 132 tilts to penetrate into the lower surface of voussoir bottom; In probe circular hole 132, inlay copper sheathing 1310, copper sheathing 1310 band internal threads, copper sheathing 1310 bottoms are inlaid with and are shaped as round inclined-plane organic glass sheet 1311.
4 internal strength bolt columns that can regulate length of four internal thread hole 138,139 installations in upper surface 135 bights on H, the right surface that is positioned at voussoir top and voussoir top.
By the Width both sides on original probe voussoir are respectively processed to two fixed orifices, solved probe plane and do not swung in plateau during scanning in pipeline cambered surface; By original voussoir bottom lengths direction is shortened, having solved probe has good surface of contact at elbow inner arc and outer arc; By in inner bolt hole voussoir top and upper surface bight rectangle dip plane and voussoir top, and adjustable orifice inner screw height, static probe voussoir is difficult for swinging at direction of travel.
Claims (2)
1. a corner bead diffraction time difference method ultrasonic inspection probe voussoir, is characterized in that: following part, consist of:
A, voussoir bottom: 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 of voussoir bottom; The upper surface of voussoir bottom is the rectangle that the trapezoidal top margin of chamfer forms, and the upper surface of voussoir bottom and the lower surface on voussoir top overlap mutually; The rectangle that the base that the lower surface of voussoir bottom is right-angled trapezium forms; The front and rear surfaces of voussoir bottom is identical chamfer trapezoidal faces, the right surface of voussoir bottom be chamfer trapezoidal the rectangle dip plane that forms of hypotenuse, the left surface on voussoir top be chamfer trapezoidal the rectangle vertical plane that forms of straight flange;
B, voussoir top: be the metallic object that xsect is 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 of voussoir bottom; The upper surface of the lower surface on voussoir top and voussoir bottom overlaps mutually, the upper surface on voussoir top is the rectangle that the top margin of right-angled trapezium forms, the front and rear surfaces on voussoir top is identical right-angled trapezium face, the rectangle dip plane that the hypotenuse that the right surface on voussoir top is right-angled trapezium forms, the rectangle vertical plane that the straight flange that the left surface on voussoir top is right-angled trapezium forms; Voussoir top and voussoir bottom are structure as a whole;
C, be positioned at two inner bolt holes in Liang Ge bight, the left side of the upper surface on voussoir top, inner bolt hole vertically penetrates into the lower surface of voussoir bottom, and inner bolt hole is provided with internal thread;
D, be positioned at two inner bolt holes of two side positions before and after the right surface surface on voussoir top, inner bolt has screw thread in hole, and inner bolt hole vertically penetrates into the lower surface of voussoir bottom;
E, be positioned at each fixed orifice of voussoir front and rear surfaces, fixed orifice is for to be connected and fixed hole with probe bracket, and inside is without screw thread setting; This voussoir front and rear surfaces refers to by the front surface of voussoir bottom, the front surface voussoir front surface dimerous on voussoir top, and by the rear surface of voussoir bottom, the voussoir dimerous rear surface, rear surface on 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, can adjusting wedge angle;
A probe circular hole on the rectangle dip plane on G, the upper surface that is positioned at voussoir top and voussoir top; Probe circular hole tilts to penetrate into the lower surface of voussoir bottom; In probe circular hole, inlay copper sheathing, copper sheathing band internal thread, copper sheathing bottom is inlaid with and is shaped as round inclined-plane organic glass sheet;
H, be positioned at 4 internal strength bolt columns that four internal thread holes in the right surface on voussoir top and the upper surface bight on voussoir top are installed.
2. corner bead diffraction time difference method ultrasonic inspection probe voussoir according to claim 1, is characterized in that: 4 internal strength bolt columns that four internal thread holes in the described right surface that is positioned at voussoir top and the upper surface bight on voussoir top are installed can regulate length.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320418265.4U CN203502389U (en) | 2013-07-15 | 2013-07-15 | Ultrasonic detection probe wedge block adopting time-of-flight diffraction method for welding joint of bending tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320418265.4U CN203502389U (en) | 2013-07-15 | 2013-07-15 | Ultrasonic detection probe wedge block adopting time-of-flight diffraction method for welding joint of bending tube |
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| CN203502389U true CN203502389U (en) | 2014-03-26 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931590A (en) * | 2015-07-16 | 2015-09-23 | 常州市常超电子研究所有限公司 | Magnetic probe |
| CN109765301A (en) * | 2019-03-21 | 2019-05-17 | 江苏省特种设备安全监督检验研究院 | It is a kind of can obstacle detouring TOFD detection voussoir |
| CN110530981A (en) * | 2019-07-04 | 2019-12-03 | 深圳南方中集集装箱服务有限公司 | A kind of container maintenance weld inspection method |
| CN113008283A (en) * | 2021-02-24 | 2021-06-22 | 大连交通大学 | System and method for measuring polarization direction of ultrasonic transverse wave |
-
2013
- 2013-07-15 CN CN201320418265.4U patent/CN203502389U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931590A (en) * | 2015-07-16 | 2015-09-23 | 常州市常超电子研究所有限公司 | Magnetic probe |
| CN109765301A (en) * | 2019-03-21 | 2019-05-17 | 江苏省特种设备安全监督检验研究院 | It is a kind of can obstacle detouring TOFD detection voussoir |
| CN109765301B (en) * | 2019-03-21 | 2023-08-22 | 江苏省特种设备安全监督检验研究院 | But voussoir is used in TOFD detection of barrier |
| CN110530981A (en) * | 2019-07-04 | 2019-12-03 | 深圳南方中集集装箱服务有限公司 | A kind of container maintenance weld inspection method |
| CN113008283A (en) * | 2021-02-24 | 2021-06-22 | 大连交通大学 | System and method for measuring polarization direction of ultrasonic transverse wave |
| CN113008283B (en) * | 2021-02-24 | 2022-08-09 | 大连交通大学 | System and method for measuring polarization direction of ultrasonic transverse wave |
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Address after: 471023 Luolong, Henan Province, Guan Lin China Petroleum First Construction Corporation Patentee after: CHINA NATIONAL PETROLEUM AND NATURAL GAS FIRST CONSTRUCTION CO.,LTD. Address before: 471023 Luolong, Henan Province, Guan Lin China Petroleum First Construction Corporation Patentee before: CNPC FIRST CONSTRUCTION Co. |
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