CN201218806Y - Ultrasonic detection apparatus for pipe butt-joint seam - Google Patents
Ultrasonic detection apparatus for pipe butt-joint seam Download PDFInfo
- Publication number
- CN201218806Y CN201218806Y CNU2008201087144U CN200820108714U CN201218806Y CN 201218806 Y CN201218806 Y CN 201218806Y CN U2008201087144 U CNU2008201087144 U CN U2008201087144U CN 200820108714 U CN200820108714 U CN 200820108714U CN 201218806 Y CN201218806 Y CN 201218806Y
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Abstract
The utility model relates to an ultrasonic wave detector for butt-welded seam of a pipeline, which consists of a digital supersonic detector, a transmitting probe, a receiving probe, a probe rack, a converter and a printer. The probe rack consists of a positioning block and a connecting shaft for connecting the positioning block at two ends, the connecting shaft is provided with a knob for adjusting the space of a probe, the transmitting probe and the receiving probe are single transverse wave oblique probes and fixed on the connecting shaft and at two edges of the knob, such that the sound beams of the two probes are inclined to a weld bead and crossed in the center of the weld bead, the transmitting probe and the receiving probe are respectively connected with the digital supersonic detector which is connected with the converter, and the converter is connected with the printer. The ultrasonic wave detector is used for detecting the butt-welded seam of the pipelines with large caliber and large wall thickness in a plurality of occasions by ultrasonic wave, has good crack detecting performance not easily affected by crack inclination, is easy to find defect, is accurate to position, and has the measuring accuracy of the defect depth reaching 1.5mm.
Description
Technical field
The utility model relates to a kind of big wall thickness pipeline of heavy caliber butt-weld ultrasonic detection device that is used for multiple occasion.
Background technology
The geographical environment and the climatic environment more complicated of transportation pipe line site welding working-yard, technological process are difficult to control sometimes, and part pipeline section butt girth welding seam particularly connects a butt girth welding seam quality and is difficult to guarantee; During the big wall thickness pipe of heavy caliber site welding, adopt sideboom tractive group to method usually, in the case, the welding crack defective very easily appears in weld seam.
In order to detect the crack defect in the weld seam, and synchronous with weld job, and domestic some external weld seam detection new technologies of having introduced at present are because intrinsic some shortcomings and the limitation of these technology itself all presses for these technology of improvement.In order to address the above problem, just must seek the isolated plant that is suitable for heavy caliber, big wall thickness oil gas gas transmission line crack defect detection.
For China's present stage heavy caliber, big wall thickness Flaw Image, X ray detects the upper limit near the existing equipment ability, crackle loss height; Effectively identification is inaccurate to the girth joint flaw echo for Ultrasonic Detection personnel; Flaw echo reflexive properties such as the crackle of the big wall thickness weld seam of heavy caliber, misalignment, incomplete fusion are not understood; Effective Ultrasonic Detection instrument equipment disposition undertesting; Special-purpose Ultrasonic Detection assessment method technology and declare the accurate imperfection of abandoned tender; Detector mainly adopts A type pulse reflection ultra-sonic defect detector to carry out manual flaw detection, as: CTS-22, CTS-26 etc.; Detect test block and adopt the standard reference block, detection probe adopts universal probe, and this makes that the detection resolving power is relatively poor, and detection efficiency is low, and depth of defect location conversion error is big, not directly perceived, and it is not high to detect quantitative accuracy.
The utility model content
To be that design is a kind of can solve heavy caliber, big wall thickness pipe welding seam and body crackle loss height to the purpose of this utility model; Depth of defect location conversion error is big, not directly perceived, detects the pipeline butt-weld ultrasonic detection device of problems such as quantitative accuracy is not high.
A kind of pipeline butt-weld ultrasonic detection device described in the utility model is made of digital supersonic flaw detector, transmitting probe, receiving transducer, probe holder, converter and printer; Probe holder is made up of with the coupling shaft that is connected locating piece the locating piece at two ends, a knob of regulating probe spacing is housed on the coupling shaft, transmitting probe and receiving transducer are single transverse wave double-bevel detector, be fixed on the coupling shaft, the knob both sides make the acoustic beam of two probes favour welding bead, and intersect at the welding bead center, transmitting probe is connected with digital supersonic flaw detector respectively with receiving transducer, and digital supersonic flaw detector connects converter, and converter connects printer.
Fix probe holder with hand, two probes and tube wall fully are coupled.Transmitting probe is launched ultrasound wave and is imported into through couplant coupling and have diffracted wave when detected weld runs into defective, and receiving transducer receives the defective diffracted signal, imports digital supersonic flaw detector into, through signal Processing, and display image.Pass judgment on associated picture at last, determine the degree of depth and the length of defective.Preserve associated picture, through connecting converter, print system output print image.Single transverse wave double-bevel detector depends on the interaction of ultrasound wave and defective end.Interaction result can launched diffracted wave than polarizers of big angle scope.Detect diffracted wave and just can determine the existence of defective.The signal propagation time difference is exactly the flaw height value.Flaw size according to travel-time of diffracted signal but not amplitude measure.
The present invention compares with traditional ultrasonic detection device and detection method, has the following advantages and good effect:
1, in conventional method, if incident angle departs from 10 °, its sensitivity reduces 25dB approximately, and single transverse wave double-bevel detector is 5dB, reduces many relatively.Single transverse wave double-bevel detector has the good crack detection performance that is not subject to the influence of crackle gradient.
2, single transverse wave double-bevel detector that heavy wall, large-diameter steel pipe are adopted is compared with conventional transducer, is easy to find defective, and is more accurate to the location of defective.
3, in the testing process, the amplitude of flaw indication can be subjected to device type, sensor characteristic, couplant type, surface of the work is coarse and smooth degree, acoustic properties and the isoparametric influence of defective self-characteristic.Therefore should be by standard code, before the flaw detection, all will carry out parametric calibration in the flaw detection process with after finishing, guaranteeing the validity of testing result, and single transverse wave double-bevel detector is subjected to these factor affecting less.
Crack position and size are levied surely in conjunction with pulse echo method with single transverse wave double-bevel detector, the depth of defect measuring accuracy can reach 1.5mm.
With the end points diffraction crack position and size are levied surely, depth of defect measuring accuracy error is less than 0.5mm.
Description of drawings
Fig. 1 pipeline butt-weld supersonic detection device structural representation.
Wherein: 1, tube wall 2, probe holder 3, transmitting probe 4, knob 5, receiving transducer 6, digital supersonic flaw detector 7, converter 8, printer
Embodiment
With reference to the accompanying drawings pipeline butt-weld supersonic detection device structure described in the utility model is illustrated below.
A kind of pipeline butt-weld ultrasonic detection device described in the utility model is made of digital supersonic flaw detector 6, transmitting probe 3, receiving transducer 5, probe holder 2, converter 7 and printer 8; Probe holder 2 is made up of with the coupling shaft that is connected locating piece the locating piece at two ends, a knob 4 of regulating probe spacing is housed on the coupling shaft, transmitting probe and receiving transducer are single transverse wave double-bevel detector, be fixed on the coupling shaft, the knob both sides make the acoustic beam of two probes favour tube wall 1 welding bead, and intersect at tube wall welding bead center, transmitting probe is connected with digital supersonic flaw detector respectively with receiving transducer, and digital supersonic flaw detector connects converter, and converter connects printer.
Claims (1)
1. a pipeline butt-weld supersonic detection device is made of digital supersonic flaw detector, transmitting probe, receiving transducer, probe holder, converter and printer; It is characterized in that: probe holder is made up of with the coupling shaft that is connected locating piece the locating piece at two ends, a knob of regulating probe spacing is housed on the coupling shaft, transmitting probe and receiving transducer are single transverse wave double-bevel detector, be fixed on the coupling shaft, the knob both sides make the acoustic beam of two probes favour welding bead, and intersect at the welding bead center, transmitting probe is connected with digital supersonic flaw detector respectively with receiving transducer, and digital supersonic flaw detector connects converter, and converter connects printer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201087144U CN201218806Y (en) | 2008-06-19 | 2008-06-19 | Ultrasonic detection apparatus for pipe butt-joint seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201087144U CN201218806Y (en) | 2008-06-19 | 2008-06-19 | Ultrasonic detection apparatus for pipe butt-joint seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201218806Y true CN201218806Y (en) | 2009-04-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201087144U Expired - Lifetime CN201218806Y (en) | 2008-06-19 | 2008-06-19 | Ultrasonic detection apparatus for pipe butt-joint seam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201218806Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886542A (en) * | 2010-07-06 | 2010-11-17 | 中国石油天然气集团公司 | Oil string thread and sealing face damage acoustic detection method and detection device |
| CN102401804A (en) * | 2011-11-02 | 2012-04-04 | 嘉兴市特种设备检测院 | Microwave scanning detection method of polyethylene pipeline electric smelting joint |
| CN102841142A (en) * | 2012-09-29 | 2012-12-26 | 黑龙江省电力科学研究院 | Weld joint detecting method based on ultrasonic detection device |
| CN102954999A (en) * | 2011-08-19 | 2013-03-06 | 中国石油天然气股份有限公司 | Triaxial magnetic leakage inner detection line signal determination method for girth joint crack defects of pipeline |
| CN103364492A (en) * | 2013-07-17 | 2013-10-23 | 江苏省特种设备安全监督检验研究院镇江分院 | Adjustable weld inspection guided wave probe and use method thereof |
| CN105373048A (en) * | 2015-12-08 | 2016-03-02 | 陕西声科电子科技有限公司 | Single-point pipeline type switch |
| CN105651865A (en) * | 2015-12-31 | 2016-06-08 | 上海岩土工程勘察设计研究院有限公司 | Die for flat-measurement-type supersonic wave rapid detection and application method of die |
| CN105866255A (en) * | 2016-05-27 | 2016-08-17 | 上海岩土工程勘察设计研究院有限公司 | Through type ultrasonic rapid detecting die and detecting method thereof |
| CN107894460A (en) * | 2017-12-25 | 2018-04-10 | 常州常宝精特钢管有限公司 | A kind of body is oblique to hinder method of detection |
-
2008
- 2008-06-19 CN CNU2008201087144U patent/CN201218806Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886542A (en) * | 2010-07-06 | 2010-11-17 | 中国石油天然气集团公司 | Oil string thread and sealing face damage acoustic detection method and detection device |
| CN102954999A (en) * | 2011-08-19 | 2013-03-06 | 中国石油天然气股份有限公司 | Triaxial magnetic leakage inner detection line signal determination method for girth joint crack defects of pipeline |
| CN102954999B (en) * | 2011-08-19 | 2016-09-07 | 中国石油天然气股份有限公司 | Detection line signal determining method in pipeline girth weld crack like defect three axle leakage field |
| CN102401804A (en) * | 2011-11-02 | 2012-04-04 | 嘉兴市特种设备检测院 | Microwave scanning detection method of polyethylene pipeline electric smelting joint |
| CN102841142A (en) * | 2012-09-29 | 2012-12-26 | 黑龙江省电力科学研究院 | Weld joint detecting method based on ultrasonic detection device |
| CN103364492A (en) * | 2013-07-17 | 2013-10-23 | 江苏省特种设备安全监督检验研究院镇江分院 | Adjustable weld inspection guided wave probe and use method thereof |
| CN105373048A (en) * | 2015-12-08 | 2016-03-02 | 陕西声科电子科技有限公司 | Single-point pipeline type switch |
| CN105651865A (en) * | 2015-12-31 | 2016-06-08 | 上海岩土工程勘察设计研究院有限公司 | Die for flat-measurement-type supersonic wave rapid detection and application method of die |
| CN105866255A (en) * | 2016-05-27 | 2016-08-17 | 上海岩土工程勘察设计研究院有限公司 | Through type ultrasonic rapid detecting die and detecting method thereof |
| CN107894460A (en) * | 2017-12-25 | 2018-04-10 | 常州常宝精特钢管有限公司 | A kind of body is oblique to hinder method of detection |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090408 |
|
| CX01 | Expiry of patent term |