CN103454350B - Waveguide rod fixing device for acoustic emission inspection of pipeline - Google Patents

Waveguide rod fixing device for acoustic emission inspection of pipeline Download PDF

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Publication number
CN103454350B
CN103454350B CN201310419583.7A CN201310419583A CN103454350B CN 103454350 B CN103454350 B CN 103454350B CN 201310419583 A CN201310419583 A CN 201310419583A CN 103454350 B CN103454350 B CN 103454350B
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CN
China
Prior art keywords
waveguide rod
pipeline
rod
diameter
waveguide
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CN201310419583.7A
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Chinese (zh)
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CN103454350A (en
Inventor
曹国梁
徐长航
陈国明
史焕地
宁肖
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中国石油大学(华东)
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Priority to CN201310419583.7A priority Critical patent/CN103454350B/en
Publication of CN103454350A publication Critical patent/CN103454350A/en
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Publication of CN103454350B publication Critical patent/CN103454350B/en

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Abstract

The invention discloses a waveguide rod fixing device for acoustic emission inspection of a pipeline. The waveguide rod fixing device conveniently realizes that waveguide rods with different diameters are firmly installed in pipelines with different pipe diameters. The waveguide rod fixing device mainly comprises a main body, a replaceable waveguide rod connecting bolt and two adjustable pipeline connecting members, wherein the waveguide rod connecting bolts with different internal diameters can be replaced according to the diameter of the waveguide rod, and the openness of the pipeline connecting members is regulated according to the diameter of a pipeline to be measured, thus the waveguide rods with different diameters are conveniently and firmly connected to pipelines with different pipe diameters. The waveguide rod fixing device is simple in structure and strong in practicability, and is capable of ensuring that the waveguide rod can be in tight contact with the surface of the pipeline through threaded compaction of the waveguide rod and a fixing device; the shaking of the waveguide rod on the pipeline is reduced through the structural design of a magnet connecting member, and finally the stable propagation of an acoustic emission signal is ensured.

Description

A kind of waveguide rod stationary installation for pipeline acoustic emission detection
Technical field
The present invention relates to a kind of waveguide rod stationary installation for pipeline acoustic emission detection, be especially applicable to the waveguide rod stationary installation of different tube diameters pipeline.
Background technology
Acoustic emission testing technology, as one of the important means of Non-Destructive Testing, has and applies comparatively widely in pressure vessel detection, pipeline leakage testing, bridge section model etc.At present, acoustic emission is when being applied to the pipeline of particular surroundings (underground, under water, deep cooling etc.), the problem of inconvenience is installed to solve sensor, need to utilize waveguide rod to assist, one end of waveguide rod is connected to pipe surface, the other end is used for sensor installation, and acoustic emission signal can be propagated in calibrate AE sensor by waveguide rod.
The Study and appliance achievement retrieved about waveguide rod finds, stable in order to ensure that waveguide rod connects, waveguide rod and the many employings of pipeline are welded to connect, so just bring inconvenience to the actual detection in engineering, and other are about the achievement of waveguide rod stationary installation, be applicable to plane or the larger structure of surperficial radian, stability when installing on the pipeline of different tube diameters can not be ensured.And when applying waveguide rod device transmission acoustic emission signal, the connection of waveguide rod end face and measured workpiece close and firm must be ensured.In addition, existing waveguide rod stationary installation is only applicable to the fixing of the waveguide rod of single diameter, and when scientific research and engineer applied according to the demand of collection signal, the waveguide rod of multiple diameter can be used, therefore need a kind ofly be applicable to different tube diameters pipeline and the stationary installation of different-diameter waveguide rod can be connected.
Summary of the invention
In order to reach the requirement that the relevant waveguide rod mentioned in background technology uses, the invention provides and be a kind ofly applicable to different tube diameters pipeline and the stationary installation of different-diameter waveguide rod can be connected.This device can realize waveguide rod connection convenient, firm on pipeline.
Technical scheme of the present invention is: a kind of waveguide rod stationary installation for pipeline acoustic emission detection.Its structure mainly comprises main body, changeable type waveguide rod coupling bolt and two adjustable conduit couplings.The upper end of described main body coordinates with changeable type waveguide rod coupling bolt, for depositing the couplant needed for test in lower stomidium.Main body both sides are connected with two T word supports, for the conduit coupling of engages adjustable.Described changeable type waveguide rod coupling bolt, has the external thread coordinated with main body upper end hole, simultaneously its inner internal thread coordinated with waveguide rod end in addition.According to the size of different waveguide bar, the coupling bolt of the corresponding dimension of inner screw thread of accessory processing, so just achieves main body and is connected with the firm of different size waveguide rod.Described adjustable conduit coupling is made up of two sway braces, two arc-shaped base, spring and jump ring, adjusting screw(rod)s.Sway brace one end is provided with square groove, is arranged on the free end of T word support; The other end of sway brace connects arc-shaped base; Threaded hole is offered in the middle of sway brace.Described arc-shaped base is that reeded arcuate structure is established in inside, and its diameter is greater than the diameter of measuring channel.Described spring fitting is between sway brace and draw-in groove, and jump ring is arranged in draw-in groove, for limiting the movement of sway brace.Adjusting screw(rod) is double threaded screw structure, is regulating wheel in the middle of adjusting screw(rod), and the hand of spiral of screw rod both sides is contrary, and the threaded hole offered with two sway brace centre positions respectively coordinates.Regulating wheel on adjustable pipe pipe connecting can change the distance between two sway braces, thus realizes coordinating of this stationary installation and different-diameter pipeline.
Advantage of the present invention: first, this waveguide rod stationary installation coordinates after waveguide rod, and when guaranteeing to use in particular surroundings (underground, under water, deep cooling etc.), sensor can not suffer damage; Secondly, this waveguide rod stationary installation can be connected with the waveguide rod of different-diameter, and for different pipeline features, the waveguide rod of the respective diameters that collocation signal attenuation is minimum, can improve measuring accuracy; Finally, this waveguide rod stationary installation goes for the pipeline of different tube diameters, ensures stability when installing on the pipeline of different tube diameters.
Accompanying drawing explanation
The present invention is further illustrated below in conjunction with accompanying drawing and concrete case study on implementation
Fig. 1 is structural representation of the present invention
Fig. 2 be in the present invention changeable type waveguide rod coupling bolt A to cut-open view
Fig. 3 be in the present invention main body rectangular structure A to cut-open view
Embodiment
Its structure mainly comprises main body (1), changeable type waveguide rod coupling bolt (2) and two adjustable conduit couplings (3).It is characterized in that:
Described main body (1) is made up of with two the T word supports (12) be symmetric the rectangular parallelepiped (11) of a through hole.Rectangular parallelepiped (11) indoor design of described main body has three sector holes, from front view direction, from top to bottom, upper end hole (111) has internal thread, coordinate with changeable type waveguide rod coupling bolt (2), interstitial hole (112), lower stomidium (113) are unthreaded hole, and the aperture of lower stomidium is greater than the aperture of interstitial hole, for placing the couplant needed for acoustic emission test in lower stomidium.Two T word supports (12) are separately fixed at two relative sides of rectangular parallelepiped, and T word support is rectangular structure.At the end of each T word support two free ends, draw-in groove (121) is respectively set, for installing jump ring.Adjustable conduit coupling (3) is connected on T word support.
Described changeable type waveguide rod coupling bolt (2), has the external thread (21) coordinated with main body upper end hole (111); Its inner internal thread (22) in addition, can coordinate with the externally threaded waveguide rod of band simultaneously.Regulate the length of waveguide rod precession, compressed by the screw thread of waveguide rod and main body, waveguide rod end is contacted closely with pipe surface, thus in guarantee pipeline, acoustic emission signal is high-quality is transmitted in waveguide rod.For the waveguide rod of different-diameter, the coupling bolt of replaceable corresponding internal diameter, thus realize the connection of this stationary installation and different-diameter waveguide rod.
Described adjustable conduit coupling (3) is made up of with jump ring (34), adjusting screw(rod) (35) two sway braces (31), two arc-shaped bases (32), springs (33).Sway brace one end is provided with square groove (311), is arranged on the free end of T word support; The other end of sway brace connects arc-shaped base (32); Threaded hole (312) is offered in the middle of sway brace.Described arc-shaped base (32) is provided with the arcuate structure of groove (321) for inside, and its diameter is greater than the diameter of measuring channel.Described spring (33) is arranged between sway brace (31) and draw-in groove (121), and jump ring (34) is arranged in draw-in groove, for limiting the movement of sway brace.Adjusting screw(rod) (35) is double threaded screw structure, is regulating wheel (351) in the middle of adjusting screw(rod), and the hand of spiral of screw rod both sides is contrary, and the threaded hole offered with two sway brace centre positions respectively coordinates.Regulating wheel on adjustable pipe pipe connecting (3) can change the distance between two sway braces (31), thus realizes coordinating of this stationary installation and different-diameter pipeline.
Ensureing under the prerequisite that is firmly connected with pipeline of this stationary installation, recording this stationary installation when being connected with the pipeline of different-diameter, the distance between two sway braces.Then mark, can be used for reviewer when known pipe diameter, to the distance fine adjustment between two sway braces.
The groove arranged in described arc-shaped base, for placing magnet or connecting securing member, can ensure that waveguide rod stationary installation is firmly fixed on pipe surface; Arc-shaped base outer wrap swarf bag, while protection arc-shaped base, increases the contact area of arc-shaped base and pipeline cambered surface.
Above-mentioned example is only for illustration of the present invention, and every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.

Claims (3)

1., for a waveguide rod stationary installation for pipeline acoustic emission detection, its structure mainly comprises main body (1), changeable type waveguide rod coupling bolt (2) and two adjustable conduit couplings (3), it is characterized in that:
Described main body (1) is made up of with two the T word supports (12) be symmetric the rectangular parallelepiped (11) of a through hole, rectangular parallelepiped (11) indoor design of described main body has three sector holes, from front view direction, from top to bottom, upper end hole (111) has internal thread, coordinate with changeable type waveguide rod coupling bolt (2), interstitial hole (112), lower stomidium (113) is unthreaded hole, and the aperture of lower stomidium is greater than the aperture of interstitial hole, for depositing the couplant needed for test in lower stomidium, two T word supports (12) are separately fixed at two relative sides of rectangular parallelepiped, T word support is rectangular structure, at the end of each T word support two free ends, draw-in groove (121) is respectively set, for installing jump ring, adjustable conduit coupling (3) is connected on T word support,
Described changeable type waveguide rod coupling bolt (2), there is the external thread (21) coordinated with main body upper end hole (111), its inner internal thread (22) in addition simultaneously, can coordinate with the externally threaded waveguide rod of band, regulate the length of waveguide rod precession, compressed by the screw thread of waveguide rod and main body, waveguide rod end is contacted closely with pipe surface, thus in guarantee pipeline, acoustic emission signal is high-quality is transmitted in waveguide rod, for the waveguide rod of different-diameter, the coupling bolt of replaceable corresponding internal diameter, thus realize the connection of this stationary installation and different-diameter waveguide rod,
Described adjustable conduit coupling (3) is by two sway braces (31), two arc-shaped bases (32), spring (33) and jump ring (34), adjusting screw(rod) (35) forms, sway brace one end is provided with square groove (311), be arranged on the free end of T word support, the other end of sway brace connects arc-shaped base (32), threaded hole (312) is offered in the middle of sway brace, described arc-shaped base (32) is provided with the arcuate structure of groove (321) for inside, its diameter is greater than the diameter of measuring channel, described spring (33) is arranged between sway brace (31) and draw-in groove (121), jump ring (34) is arranged in draw-in groove, for limiting the movement of sway brace, adjusting screw(rod) (35) is double threaded screw structure, be regulating wheel (351) in the middle of adjusting screw(rod), the hand of spiral of screw rod both sides is contrary, the threaded hole offered with two sway brace centre positions respectively coordinates, regulating wheel on adjustable pipe pipe connecting (3) can change the distance between two sway braces (31), thus realize coordinating of this stationary installation and different tube diameters pipeline.
2. a kind of waveguide rod stationary installation for pipeline acoustic emission detection according to claim 1, it is characterized in that ensureing under the prerequisite that this stationary installation is firmly connected with pipeline, record this stationary installation when being connected with the pipeline of different-diameter, distance between two sway braces, then mark, can be used for reviewer when known pipe diameter, to the distance fine adjustment between two sway braces.
3. a kind of waveguide rod stationary installation for pipeline acoustic emission detection according to claim 1; it is characterized in that; the groove arranged in arc-shaped base is for placing magnet or connecting securing member; can ensure that waveguide rod stationary installation is firmly fixed on pipe surface; arc-shaped base outer wrap swarf bag; while protection arc-shaped base, increase the contact area of arc-shaped base and pipeline cambered surface.
CN201310419583.7A 2013-09-13 2013-09-13 Waveguide rod fixing device for acoustic emission inspection of pipeline CN103454350B (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104569160A (en) * 2015-01-16 2015-04-29 南京工业大学 Device for detecting inner leakage of high-temperature valve
CN106546664A (en) * 2016-11-22 2017-03-29 重庆交通大学 A kind of auxiliary device of Steel Wire Surface placement sensor
CN108799846B (en) * 2018-07-06 2020-11-24 中国核动力研究设计院 Nuclear power station pressure pipeline acoustic emission detector and method
CN109030284A (en) * 2018-07-06 2018-12-18 中国矿业大学(北京) A kind of ultrasonic wave identification device and method of filling pipeline plugging

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JP2003028838A (en) * 2001-07-10 2003-01-29 Sanyo Special Steel Co Ltd Method for preventing detection omission of edge flaw detector
CN201497732U (en) * 2009-07-31 2010-06-02 广东电网公司电力科学研究院 Ultrasonic guided wave transducer with adjustable incidence angle
CN101726543A (en) * 2009-11-26 2010-06-09 南京市锅炉压力容器检验研究院 Wave guide rod for acoustic emission testing
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CN202421137U (en) * 2012-01-16 2012-09-05 东北石油大学 Connecting mechanism of sensor, wave guide rod and object to be detected used for acoustic emission detection
CN202794114U (en) * 2012-09-21 2013-03-13 西安交通大学 Waveguide device used under high temperature and high pressure water environment
CN103293228A (en) * 2013-03-04 2013-09-11 江苏省特种设备安全监督检验研究院镇江分院 Adjustable weld seam flaw detection guided wave probe fixator
CN203414447U (en) * 2013-08-06 2014-01-29 杭州浙大精益机电技术工程有限公司 Steel pipe clamping three-roller centering device for ultrasonic rotating flaw detector
CN203443935U (en) * 2013-09-13 2014-02-19 中国石油大学(华东) Wave guide rod fixing device for pipe acoustic emission detection

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003028838A (en) * 2001-07-10 2003-01-29 Sanyo Special Steel Co Ltd Method for preventing detection omission of edge flaw detector
CN201497732U (en) * 2009-07-31 2010-06-02 广东电网公司电力科学研究院 Ultrasonic guided wave transducer with adjustable incidence angle
CN101625337B (en) * 2009-07-31 2011-07-20 广东电网公司电力科学研究院 Circumferential wave guide energy converter with adjustable incident angle
CN101726543A (en) * 2009-11-26 2010-06-09 南京市锅炉压力容器检验研究院 Wave guide rod for acoustic emission testing
CN202421137U (en) * 2012-01-16 2012-09-05 东北石油大学 Connecting mechanism of sensor, wave guide rod and object to be detected used for acoustic emission detection
CN202794114U (en) * 2012-09-21 2013-03-13 西安交通大学 Waveguide device used under high temperature and high pressure water environment
CN103293228A (en) * 2013-03-04 2013-09-11 江苏省特种设备安全监督检验研究院镇江分院 Adjustable weld seam flaw detection guided wave probe fixator
CN203414447U (en) * 2013-08-06 2014-01-29 杭州浙大精益机电技术工程有限公司 Steel pipe clamping three-roller centering device for ultrasonic rotating flaw detector
CN203443935U (en) * 2013-09-13 2014-02-19 中国石油大学(华东) Wave guide rod fixing device for pipe acoustic emission detection

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