WO2020047849A1 - 一种t型焊接接头检测用交叉电磁轭 - Google Patents

一种t型焊接接头检测用交叉电磁轭 Download PDF

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WO2020047849A1
WO2020047849A1 PCT/CN2018/104628 CN2018104628W WO2020047849A1 WO 2020047849 A1 WO2020047849 A1 WO 2020047849A1 CN 2018104628 W CN2018104628 W CN 2018104628W WO 2020047849 A1 WO2020047849 A1 WO 2020047849A1
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magnetic pole
magnetic
cross
electromagnetic yoke
detecting
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PCT/CN2018/104628
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English (en)
French (fr)
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徐学堃
杜传国
丁成海
庞继勇
张勇
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中国电建集团山东电力建设第一工程有限公司
山东丰汇工程检测有限公司
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Priority to PCT/CN2018/104628 priority Critical patent/WO2020047849A1/zh
Publication of WO2020047849A1 publication Critical patent/WO2020047849A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
    • G01N27/84—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields by applying magnetic powder or magnetic ink
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits

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  • the invention belongs to the field of welding inspection, and particularly relates to a cross electromagnetic yoke for detecting T-shaped welded joints.
  • the common detection methods for magnetic particle detection include magnetization methods such as electromagnetic yoke method, cross yoke method, contact method, and coil method.
  • the contact method When using the contact method to magnetize the T-type welded joint, the two sides of the contact and the T-type joint are in electrical contact, which is likely to cause fire and burn the workpiece and hurt the operator; the contact method is also unidirectional magnetization, which requires two The magnetization is perpendicular to each other, the detection efficiency is low; and the detection sensitivity of the contact method is average.
  • the present invention provides a crossed electromagnetic yoke for detecting T-welded joints.
  • the technical solution adopted by the present invention is as follows:
  • a cross-shaped electromagnetic yoke for detecting a T-shaped welded joint includes a shell and a cross probe element provided in the shell.
  • the shell is provided with a total of four magnetic yokes from No. 1 to No. 4; Iron core and lower iron core,
  • the upper iron core includes magnetic poles No. 1, magnetic poles No. 2, and magnetic poles No. 2; the magnetic poles No. 1 and No. 2 are respectively disposed at both ends of the upper pole, and the magnetic poles No. 1 and No. 2 are vertically arranged in space;
  • the lower iron core includes the third magnetic pole, the lower connecting plate and the fourth magnetic pole, the third magnetic pole and the fourth magnetic pole are respectively disposed at both ends of the lower connecting plate, and the third magnetic pole and the fourth magnetic pole are arranged vertically in space;
  • the upper connecting plate and the lower connecting plate are arranged in close contact with each other with an insulator sandwiched therebetween, the magnetic poles of the first and fourth magnetic poles are arranged in a space in parallel and the probes are all facing forward, and the second The magnetic pole and the third magnetic pole are arranged in parallel in space with their probe ends facing downwards;
  • the magnetic yokes No. 1 to No. 4 are respectively set on the No. 1 to No. 4 magnetic poles.
  • rollers are provided on the side surfaces of the probe ends of the first to fourth magnetic poles, and the height of the edges of the rollers exposed to the corresponding ends of the probe ends of the magnetic poles does not exceed 0.5 mm.
  • the length of the first to fourth magnetic poles of the cross electromagnetic yoke for detecting the T-shaped welded joint is 35 to 90 mm.
  • the cross-shaped electromagnetic yoke for detecting the T-shaped welded joint is provided with a handle and a switch on the casing.
  • the four magnetic poles are perpendicular to the two faces of the T-joint.
  • the multi-directional magnetization and magnetization effect are good, and the strength of the formed magnetic field is large.
  • One-time magnetization can find defects in all directions of the T-joint.
  • the detection sensitivity is high and the detection efficiency is high. .
  • the invention is non-electrical contact operation, which will not cause the workpiece to be ignited and burnt, and will not hurt the operator. It solves the problem of the magnetic powder detection of the T-joint by the cross yoke, improves the detection efficiency, and meets the detection sensitivity requirements.
  • the magnetic pole is in contact with the two faces of the T-joint through the roller, and can be rolled on it, and the continuous magnetization operation is convenient.
  • FIG. 1 is a schematic structural diagram of the present invention
  • FIG. 2 is a schematic diagram of installing a roller on a magnetic pole according to the present invention
  • FIG. 3 is a schematic structural diagram of a magnetic pole of the present invention.
  • 1 is the upper iron core
  • 11 is the first magnetic pole
  • 12 is the second magnetic pole
  • 13 is the upper connecting plate
  • 2 is the lower iron core
  • 21 is the third magnetic pole
  • 22 is the fourth magnetic pole
  • 23 is the lower connecting plate
  • 3 is the shell, 31 is the first yoke, 32 is the second yoke, 33 is the third yoke, 34 is the fourth yoke,
  • 4 is a handle
  • 5 is a switch
  • 6 is a power cord
  • 7 is a roller
  • 8 is an insulator.
  • this embodiment is a cross electromagnetic yoke for detecting a T-shaped welded joint, which includes a casing 1 and a cross probe element provided in the casing 1. Yoke 31, 32, 33, 34; the cross probe element includes an upper iron core 1 and a lower iron core 2 arranged in a crosswise manner.
  • the upper iron core 1 includes the first magnetic pole 11, the upper connecting plate 13 and the second magnetic pole 12.
  • the first magnetic pole 11 and the second magnetic pole 12 are respectively disposed at both ends of the upper connecting plate 13.
  • the first magnetic pole 11 and The second magnetic pole 12 is arranged vertically in space;
  • the lower iron core 2 includes the third magnetic pole 21, the lower connecting plate 23 and the fourth magnetic pole 22.
  • the third magnetic pole 21 and the fourth magnetic pole 22 are respectively disposed at both ends of the lower connecting plate 23.
  • the third magnetic poles 21 and four The magnetic pole 22 is arranged vertically in space;
  • the upper connecting plate 13 and the lower connecting plate 23 are arranged in close contact with each other with an insulator 8 interposed therebetween.
  • the first magnetic pole 11 and the fourth magnetic pole 22 are arranged in space in parallel and their probes are facing forward.
  • the second magnetic pole 12 and the third magnetic pole 21 are arranged in parallel in space with their probe ends facing downwards;
  • the first to fourth magnetic yokes 31, 32, 33, and 34 are respectively set on one to four magnetic poles 11, 12, 21, and 22 respectively.
  • the electromagnetic yoke is magnetized, No. 1 to No. 4 yoke 31, 32, 33, 34 are generated, and these four yokes 31, 32, 33, 34 correspond to No. 1 to No. 4 magnetic poles 11, 12, 21, 22, combined
  • the magnetic poles 11 and 21 are perpendicular to each other, and the magnetic poles 12 and 22 are perpendicular to each other.
  • rollers 7 are provided on the sides of the probe ends of the first to fourth magnetic poles 11, 12, 21, and 22, and the edges of the rollers 7 expose the corresponding end faces of the probe ends of the magnetic poles.
  • the height does not exceed 0.5mm.
  • the cross electromagnetic yoke for detecting the T-shaped welded joint, and the length of the first to fourth magnetic poles 11, 12, 21, and 22 in this embodiment is preferably 60 mm.
  • the cross electromagnetic yoke for detecting the T-shaped welded joint is provided with a handle 4 and a switch 5 on the casing 3.
  • the operator grasps the handle 4 and places it at the position of the T-joint to be tested, and the vertical surface of the T-joint is placed between the No. 1 to No. 4 yoke 31, 32, 33, 34.
  • the power line 6 communicates with the electromagnetic yoke, and the switch 5 is turned on to energize the coils on the first to fourth magnetic poles 11, 12, 21, and 22. Control the phase difference of the energized current, so that the magnetic poles of No.1 to No.4, 12, 21, 22 generate a rotating magnetic field at the T-joint position, and pull the electromagnetic yoke to continuously walk at the T-joint position.
  • the four magnetic poles are to be detected.
  • Surface magnetization generates a rotating magnetic field at the position of the T-joint, so that defects in any direction of the T-joint can be detected.
  • the arrangement of the cross probe elements is cleverly designed. When testing the T-joint, composite magnetization can be realized with high sensitivity.
  • One-time magnetization can detect defects in all directions on the T-joint, and the detection efficiency is high.
  • the T-type welding joint is magnetized, without electrical contact, it will not cause fire and avoid causing damage to equipment and personnel. It can also be used for magnetic particle detection of "industrial" welding joints.

Abstract

一种T型焊接接头检测用交叉电磁轭，包括外壳（3）和设在外壳（3）中的交叉探头元件，外壳（3）上设有一号至四号共四个磁轭（31、32、33、34）；交叉探头元件包括交叉布置的上铁芯（1）和下铁芯（2），上铁芯（1）包括一号磁极（11）、上连板（13）和二号磁极（12），下铁芯（2）包括三号磁极（21）、下连板（23）和四号磁极（22），上连板（13）和下连板（23）呈上下贴紧布置且其之间夹有绝缘体（8）；一号至四号磁轭（31、32、33、34）分别一一对应套装在一号至四号磁极（11、12、21、22）上。该交叉电磁轭能够多向磁化、磁化效果好，形成的磁场强度大，一次磁化能发现T型接头各个方向的缺陷，检测灵敏度高且检测效率高。

Description

一种T型焊接接头检测用交叉电磁轭 技术领域
本发明属于焊接检测领域，具体涉及一种T型焊接接头检测用交叉电磁轭。
背景技术
在一些钢结构制作过程中，需要对T型、“工”型等角接接头进行磁粉检测。目前，磁粉检测常用的检测方法有电磁轭法、交叉磁轭法、触头法、线圈法等磁化方式。
现有技术存在的问题：
a)使用电磁轭对T型焊接接头进行磁化检测时，磁极与T型接头的两个面不能很好接触，磁化效果不好，检测灵敏度低；电磁轭是单向磁化，需要进行两次互相垂直的磁化，检测速度慢，效率低。
b)使用普通交叉磁轭对T型接头进行磁化时，交叉磁轭的磁极是在同一平面，进行检测时，与T型焊接接头的两个面是线接触，磁化效果很差，形成的磁场弱，检测灵敏度低，缺陷容易漏检。
c)使用触头法对T型焊接接头进行磁化时，触头和T型接头两个面是电接触，容易引起打火烧伤工件，伤害操作者；触头法也是单向磁化，需要进行两次互相垂直的磁化，检测效率低；且触头法检测灵敏度一般。
技术解决方案
为了解决上述问题，本实发明提供了一种T型焊接接头检测用交叉电磁轭，本发明采用的技术方案如下：
一种T型焊接接头检测用交叉电磁轭，包括外壳和设在外壳中的交叉探头元件，所述外壳上设有一号至四号共四个磁轭；所述交叉探头元件包括交叉布置的上铁芯和下铁芯，
所述上铁芯包括一号磁极、上连板和二号磁极，所述一号磁极和二号磁极分别设在上连板两端，所述一号磁极和二号磁极呈空间垂直布置；
所述下铁芯包括三号磁极、下连板和四号磁极，所述三号磁极和四号磁极分别设在下连板两端，所述三号磁极和四号磁极呈空间垂直布置；
所述上连板和下连板呈上下贴紧布置且其之间夹有绝缘体，所述一号磁极和四号磁极之间呈空间平行布置且其探头均为端朝前，所述二号磁极和三号磁极之间呈空间平行布置且其探头端均为朝下；
所述一号至四号磁轭分别一一对应套装在一号至四号磁极上。
上述T型焊接接头检测用交叉电磁轭，所述一号至四号磁极的探头端侧面均设有滚轮，所述 滚轮的滚边露出其对应磁极探头端端面的高度不超过0.5mm。
上述T型焊接接头检测用交叉电磁轭，所述一号至四号磁极的长度为35～90mm。
上述T型焊接接头检测用交叉电磁轭，所述外壳上设有把手和开关。
有益效果
其一，四个磁极分别与T型接头的两个面垂直，多向磁化、磁化效果好，形成的磁场强度大，一次磁化可以发现T型接头各个方向的缺陷，检测灵敏度高且检测效率高。
其二，本发明是非电接触操作，不会引起打火烧伤工件及伤害操作者，解决了交叉磁轭对于T型接头磁粉检测的问题，提高检测效率，满足了检测灵敏度要求。磁极通过滚轮与T型接头的两个面接触，可以在上面滚动，连续磁化操作方便。
附图说明
图1为本发明的外形结构示意图；
图2为本发明磁极上滚轮安装示意图；
图3为本发明磁极的结构示意图。
图中：1为上铁芯、11为一号磁极、12为二号磁极、13为上连板、
2为下铁芯、21为三号磁极、22为四号磁极、23为下连板、
3为外壳、31为一号磁轭、32为二号磁轭、33为三号磁轭、34为四号磁轭、
4为把手、5为开关、6为电源线、7为滚轮、8为绝缘体。
本发明的最佳实施方式
下面结合附图对本发明进一步解释说明。
结合图1至图3，本实施例是一种T型焊接接头检测用交叉电磁轭，包括外壳1和设在外壳1中的交叉探头元件，所述外壳1上设有一号至四号共四个磁轭31、32、33、34；所述交叉探头元件包括交叉布置的上铁芯1和下铁芯2。
所述上铁芯1包括一号磁极11、上连板13和二号磁极12，所述一号磁极11和二号磁极12分别设在上连板13两端，所述一号磁极11和二号磁极12呈空间垂直布置；
所述下铁芯2包括三号磁极21、下连板23和四号磁极22，所述三号磁极21和四号磁极22分别设在下连板23两端，所述三号磁极21和四号磁极22呈空间垂直布置；
所述上连板13和下连板23呈上下贴紧布置且其之间夹有绝缘体8，所述一号磁极11和四号磁极22之间呈空间平行布置且其探头均为端朝前，所述二号磁极12和三号磁极21之间呈空间平行布置且其探头端均为朝下；
所述一号至四号磁轭31、32、33、34分别一一对应套装在一号至四号磁极11、12、21、22上。该电磁轭磁化时产生一号至四号磁轭31、32、33、34，这四个磁轭31、32、33、34对应产生 一号至四号磁极11、12、21、22，结合附图1和图3，一号磁极11与三号磁极21互相垂直，二号磁极12与四号磁极22互相垂直。
上述T型焊接接头检测用交叉电磁轭，所述一号至四号磁极11、12、21、22的探头端侧面均设有滚轮7，所述滚轮7的滚边露出其对应磁极探头端端面的高度不超过0.5mm。
上述T型焊接接头检测用交叉电磁轭，所述一号至四号磁极11、12、21、22的长度本实施例优选为60mm。
上述T型焊接接头检测用交叉电磁轭，所述外壳3上设有把手4和开关5。
使用时操作者抓住把手4放置在待检测的T型接头位置，则T型接头的垂直面置于一号至四号磁轭31、32、33、34之间。电源线6连通该电磁轭，打开开关5使得一号至四号磁极11、12、21、22上的线圈通电。控制通电电流的相位差，使一号至四号磁极11、12、21、22在T型接头位置处产生旋转磁场，并拉动该电磁轭连续在T型接头位置处行走，四个磁极对待检测表面磁化，在T型接头位置处产生旋转磁场，从而可以检测T型接头任何方向上的缺陷。
本实施例能够达到如下技术效果：
1、巧妙设计交叉探头元件的布置，对T型接头检测时，可实现复合磁化，灵敏度高。
2、一次磁化可以检测T型接头上所有方向的缺陷，检测效率高。
3、设置滚轮7可在T型接头的两个面上滚动，实现连续移动，操作方便。
4、对T型焊接接头磁化，没有电接触，不会引起打火，避免对设备和人员造成伤害。还可适用于“工”型焊接接头的磁粉检测。
在制造上述交叉电磁轭时特别要注意一号至四号磁极11、12、21、22探头端的朝向设置、滚轮7的滚边露出的高度以及一号至四号磁极11、12、21、22线圈缠绕分布走向。

Claims (4)

  1. 一种T型焊接接头检测用交叉电磁轭，其特征在于：包括外壳(1)和设在外壳(1)中的交叉探头元件，所述外壳(1)上设有一号至四号共四个磁轭(31、32、33、34)；
    所述交叉探头元件包括交叉布置的上铁芯(1)和下铁芯(2)，
    所述上铁芯(1)包括一号磁极(11)、上连板(13)和二号磁极(12)，所述一号磁极(11)和二号磁极(12)分别设在上连板(13)两端，所述一号磁极(11)和二号磁极(12)呈空间垂直布置；
    所述下铁芯(2)包括三号磁极(21)、下连板(23)和四号磁极(22)，所述三号磁极(21)和四号磁极(22)分别设在下连板(23)两端，所述三号磁极(21)和四号磁极(22)呈空间垂直布置；
    所述上连板(13)和下连板(23)呈上下贴紧布置且其之间夹有绝缘体(8)，所述一号磁极(11)和四号磁极(22)之间呈空间平行布置且其探头均为端朝前，所述二号磁极(12)和三号磁极(21)之间呈空间平行布置且其探头端均为朝下；
    所述一号至四号磁轭(31、32、33、34)分别一一对应套装在一号至四号磁极(11、12、21、22)上。
  2. 根据权利要求1所述的T型焊接接头检测用交叉电磁轭，其特征在于：所述一号至四号磁极(11、12、21、22)的探头端侧面均设有滚轮(7)，所述滚轮(7)的滚边露出其对应磁极探头端端面的高度不超过0.5mm。
  3. 根据权利要求1所述的T型焊接接头检测用交叉电磁轭，其特征在于：所述一号至四号磁极(11、12、21、22)的长度为35～90mm。
  4. 根据权利要求1所述的T型焊接接头检测用交叉电磁轭，其特征在于：所述外壳(3)上设有把手(4)和开关(5)。
PCT/CN2018/104628 2018-09-07 2018-09-07 一种t型焊接接头检测用交叉电磁轭 WO2020047849A1 (zh)

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