CN210487678U

CN210487678U - Split type magnetic particle flaw detector

Info

Publication number: CN210487678U
Application number: CN201921231470.3U
Authority: CN
Inventors: 卢振宇; 甄家麟; 林志文
Original assignee: Guangzhou Zhujiang Natural Gas Power Generation Co ltd; Guangzhou Development Group Inc
Current assignee: Guangzhou Zhujiang Natural Gas Power Generation Co ltd; Guangzhou Development Group Inc
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-05-08
Anticipated expiration: 2029-07-30

Abstract

The utility model discloses a split type magnetic particle flaw detector, wherein a N-pole flaw detection part and an S-pole flaw detection part which are separated from each other are respectively provided with a host module, each host module comprises a magnetic field generator and a magnetic yoke foot which are matched for use, are not limited by positions and are still applicable to narrow flaw detection parts; and each magnetic field generating body assembly has made things convenient for the staff to hold the operation in holding the shell, effectively improves and uses experience, and this utility model is used for nondestructive test technical field.

Description

Split type magnetic particle flaw detector

Technical Field

The utility model relates to a nondestructive test technical field especially relates to a split type magnetic particle flaw detector.

Background

The leakage magnetic field flaw detection is that after ferromagnetic materials or workpieces are magnetized, if discontinuity exists on the surface and the near surface, the magnetic lines of force at the discontinuity leave the workpiece and enter the surface of the workpiece, and local distortion occurs to generate magnetic poles. The leakage magnetic field flaw detection comprises magnetic particle flaw detection and detection of a leakage magnetic field by using a detection element. Among them, magnetic particle inspection uses ferromagnetic powder as a sensor of a magnetic field, that is, uses a leakage magnetic field to adsorb magnetic particles applied at a discontinuity to form a magnetic mark, thereby exhibiting the position, shape and size of the discontinuity.

The existing magnetic detector has the defect of certain position limitation in use. The existing magnetic detectors in the market are all integrated rigid structures, and the problem that the detectors cannot be arranged in certain narrow positions causes limitation on flaw detection.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a split type magnetism is visited appearance suitable for various inspection position and portable application.

The utility model adopts the technical proposal that:

the utility model provides a split type magnetic particle flaw detector, including the N utmost point portion of detecting a flaw and with the N utmost point portion of detecting a flaw complex S utmost point portion of detecting a flaw, the mutual separation of the portion of detecting a flaw and the S utmost point portion of detecting a flaw is visited to the N utmost point, the portion of detecting a flaw and the S utmost point portion of detecting a flaw all include the host computer module, with the power module that the host computer module is connected, the host computer module includes the magnetic field generator, connects the yoke foot of the magnetic field generator, each the magnetic field generator is external to be established one respectively and is held the shell, each the head of the magnetic field generator is located respectively and corresponds and holds.

Further conduct the utility model discloses technical scheme' S improvement, each magnetic field generator is an iron bar and twines at the coil of iron bar surface, each the coil all is located the shell of gripping, the coil on the portion of detecting a flaw with the S utmost point of the portion of detecting a flaw of N utmost point is around putting opposite direction.

Further conduct the utility model discloses technical scheme's improvement, each the yoke foot adopts the iron bar, the iron bar of yoke foot and magnetic field generator's iron bar integrated into one piece wear out from the afterbody that grips the shell.

Further conduct the utility model discloses technical scheme's improvement, host computer module still includes at least one lighting device, grip and install each lighting device's of control lighting switch on the shell, each lighting device fixes on gripping the shell through a universal flexible axle respectively.

Further conduct the utility model discloses technical scheme's improvement, each lighting device is the LED lamp that is fixed in universal flexible axle tail end.

Further conduct the utility model discloses technical scheme's improvement, power module includes a power pack, installs lithium ion battery in the power pack, the bottom of power pack is fixed with the power connection, grip the top of shell and set up the power source that the power connection alternates.

Further conduct the utility model discloses technical scheme's improvement, each the power pack with grip between the shell and be connected fixedly through a fastener.

Further conduct the utility model discloses technical scheme's improvement, the fastener is flange nut, the lower extreme surface of power pack is equipped with the external screw thread the same with flange nut specification, flange nut's flange face is fixed at the top of gripping the shell.

Further as the utility model discloses technical scheme's improvement, each information transceiver is equipped with respectively in the inside of gripping the shell.

Further conduct the utility model discloses technical scheme' S improvement, all install magnetic field on the shell that grips of the portion of hindering is visited to the N utmost point and the S utmost point and produce the switch.

The utility model has the advantages that: the split type magnetic detector is characterized in that an N-pole flaw detection part and an S-pole flaw detection part which are separated from each other are respectively provided with a host module, each host module comprises a magnetic field generating body and a magnetic yoke foot which are matched for use, the width between the two magnetic yoke feet can be randomly adjusted, is not limited by position, and is still suitable for narrow flaw detection parts; and each magnetic field generating body is assembled in holding the shell, has made things convenient for the staff to carry out and has held the operation, effectively improves and uses experience.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

FIG. 1 is a schematic view of the appearance structure of the N-pole flaw detection part and the S-pole flaw detection part of the embodiment of the present invention;

FIG. 2 is a schematic view of an exploded structure of an N-pole flaw detection unit according to an embodiment of the present invention;

fig. 3 is an exploded schematic view of the S-pole flaw detection unit according to the embodiment of the present invention.

Detailed Description

Referring to fig. 1 to 3, the utility model relates to a split type magnetic particle flaw detector, including the N utmost point portion of detecting a flaw and with the S utmost point portion of detecting a flaw complex of detecting a flaw the S utmost point portion of detecting a flaw of N utmost point, the N utmost point portion of detecting a flaw and the mutual separation of S utmost point portion of detecting a flaw, the N utmost point portion of detecting a flaw and S utmost point portion of detecting a flaw mutually support and detect, the power module 2 that is connected with host computer module 1 is equallyd divide into host computer module 1, host computer module 1 includes magnetic field generator 11, connect the yoke foot 12 of magnetic field generator 11, each magnetic field generator 11 overlaps respectively outward and establishes one and grips shell 13, the head of each magnetic field generator 11 is located respectively and corresponds grips in shell 13.

In order to adapt to the width of a welding seam, a contactable surface and the like, the width between two yoke legs 12 needs to be continuously adjusted during work, and meanwhile, in order to have stronger lifting force, the yoke legs 12 need to be connected more tightly, but the connection is tighter, and the width between the yoke legs 12 is more difficult to adjust. The split type magnetic detector is characterized in that an N-pole flaw detection part and an S-pole flaw detection part which are separated from each other are respectively provided with a host module 1, each host module 1 comprises a magnetic field generating body 11 and a magnetic yoke foot 12 which are matched for use, the width between the two magnetic yoke feet 12 can be adjusted at will, is not limited by the position and is still suitable for narrow flaw detection parts; and each magnetic field generating body 11 is assembled in holding shell 13, has made things convenient for the staff to carry out and has held the operation, effectively improves and uses experience.

As shown in fig. 2 and 3, each magnetic field generator 11 includes an iron rod and a coil 111 wound around the outer surface of the iron rod, each coil 111 is located in the grip case 13, and the winding directions of the coils 111 on the N-pole flaw detection part and the S-pole flaw detection part are opposite. Taking an iron rod wound with the coil 111 as the magnetic field generator 11, generating a magnetic field in the middle of the coil 111 after electrification, and improving the magnetic field intensity due to the existence of the iron rod; and the iron rod is simple to manufacture, the cost required by the material is low, and the manufacturing difficulty and the cost of the magnetic detector are favorably reduced. Further preferably, in the present embodiment, each yoke leg 12 is made of an iron rod, and the iron rod of each yoke leg 12 is integrally formed with the iron rod of its corresponding magnetic field generator and protrudes from the tail of the holding shell 13. The same iron bar is used as a part of the magnetic yoke foot 12 and the magnetic field generator 11, and the magnetic yoke foot 12 and the magnetic field generator 11 are integrally formed, so that the connection density between the magnetic yoke foot 12 and the magnetic field generator 11 is ensured, and compared with the magnetic yoke foot 12 which is connected in a segmentation manner in the traditional magnetic detector, better lifting force can be obtained, the detection effect can be better, and the accuracy of magnetic field detection is effectively ensured; and so set up and to have avoided the emergence of the circumstances such as yoke foot 12 connection looseness or drop, its test site of easier control during the use realizes accurate flaw detection.

As the preferred embodiment of the present invention, the host module 1 further includes a lighting device 14, the lighting device 14 in this embodiment adopts an LED lamp, the grip housing 13 is provided with a lighting switch 141 for controlling the LED lamp, the LED lamp is fixed on the grip housing 13 through a universal flexible shaft 15, and further, the LED is fixed at the tail end of the universal flexible shaft 15. The lighting device 14 is added, so that the magnetic detector can work effectively under dim light conditions. The narrow gaps and other parts are often insufficient in light, the internal conditions cannot be observed effectively inevitably during detection, and the installation and use of the lighting device 14 ensure that the operators can observe normally, so that the overall flaw detection efficiency is effectively improved. This embodiment is fixed the LED lamp through universal flexible axle 15, and universal flexible axle 15 can 360 degrees random bending, is convenient for stretch into the LED lamp in the middle of the narrow complicated space, has effectively guaranteed the high efficiency of the operation of detecting a flaw under each condition and has gone on.

As the preferred embodiment of the present invention, the power module 2 includes a power box 21, and a lithium ion battery 22 installed in the power box 21, the lithium ion battery 22 is a rechargeable mobile lithium battery, the bottom of the power box 21 is fixed with a power connector 23, and the top of the holding case 13 is provided with a power interface for the power connector 23 to penetrate. Further, each power supply box 21 is connected and fixed with the holding shell 13 through a fastener 3. The power supply box 21 and the holding shell 13 are better fixed by the arrangement of the fastener 3, and the connection stability of the power supply box and the holding shell is improved. Preferably, in the present embodiment, the fastening member 3 is a flange nut, the outer surface of the lower end of the power supply box 21 is provided with an external thread having the same size as the flange nut, and the flange surface of the flange nut is fixed on the top of the holding housing 13. The flange nut is used as the fastener 3, so that the power box 21 and the holding shell 13 can be disassembled, and the replacement of the aged or failed battery is convenient. Meanwhile, the rechargeable mobile lithium battery is adopted, so that the magnetic detector does not need to be additionally plugged with a power supply, is convenient to carry, and is favorable for long-time mobile flaw detection operation after charging is finished. Further, a small inverter connected to a lithium ion battery is preferably disposed in the power supply box 21. The setting of small-size dc-to-ac converter reverses into the alternating current with the direct current of lithium ion battery output, and then can effectively improve this split type magnetism and visit the lifting force of appearance, and detection effect is more accurate.

In a preferred embodiment of the present invention, the information transceiver 4 is mounted inside each grip case 13, and the magnetic field generating switch 112 is mounted on each grip case 13 of the N-pole flaw detection portion and the S-pole flaw detection portion. Further, the information transceiver 4 is a bluetooth module, the bluetooth module can be connected with a magnetic field generating switch, and the magnetic field generating switch is controlled by the bluetooth module, so that after the magnetic field generating switch on the N-pole flaw detection part is pressed down, the S-pole flaw detection part can synchronously receive information to generate magnetism, which is beneficial to synchronous operation. When the bluetooth module produces unusual unable response, because all be equipped with magnetic field on the N utmost point portion of visiting and the S utmost point portion of visiting and produce the switch, can open the operation respectively, provide the back-up guarantee for the normal clear of the work of detecting a flaw.

According to fig. 1, each holding shell 13 is corrugated, the appearance design conforms to ergonomics, and the magnetic detector is helpful for holding the N-pole flaw detection part or the S-pole flaw detection part of the magnetic detector more firmly and comfortably, so that an operator does not feel too much fatigue even under long-time high-strength work.

During the use, traditional magnetic detector usually needs the perpendicular to welding seam contact surface to detect a flaw, has certain space and angle requirement, and nevertheless job site often is wrong indulges complicacy, like pressing close to the pipeline welding seam on ground, crooked tube socket welding seam, the narrow welding seam in space etc. in the middle of the above-mentioned condition, traditional magnetic detector can't effectively carry out the operation of detecting a flaw. For narrow space with complex condition, the two yoke feet 12 of the split magnetic detector are separated from each other and can easily extend into the space, thereby successfully completing the flaw detection operation.

Naturally, the invention is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope of the claims of the present application.

Claims

1. The utility model provides a split type magnetic particle flaw detector which characterized in that: including the N utmost point portion of detecting a flaw and with the N utmost point portion of detecting a flaw complex S utmost point portion of detecting a flaw, the mutual separation of N utmost point portion of detecting a flaw and S utmost point portion of detecting a flaw, the N utmost point portion of detecting a flaw and S utmost point portion of detecting a flaw all contain host computer module (1), with power module (2) that host computer module (1) are connected, host computer module (1) include magnetic field generator (11), connect magnetic yoke foot (12) of magnetic field generator (11), each magnetic field generator (11) are outer to be established respectively and are held shell (13), each the head of magnetic field generator (11) is located respectively and corresponds and holds shell (13).

2. The split type magnetic particle flaw detector of claim 1, characterized in that: each magnetic field generating body (11) comprises an iron bar and coils (111) wound on the outer surface of the iron bar, each coil (111) is positioned in the holding shell (13), and the winding directions of the N-pole flaw detection part and the coils (111) on the S-pole flaw detection part are opposite.

3. The split type magnetic particle flaw detector of claim 2, characterized in that: each magnetic yoke foot (12) adopts an iron rod, and the iron rod of the magnetic yoke foot (12) and the iron rod of the magnetic field generating body (11) are integrally formed and penetrate out of the tail part of the holding shell (13).

4. The split type magnetic particle flaw detector of claim 1, characterized in that: the host module (1) further comprises at least one lighting device (14), a lighting switch (141) for controlling each lighting device (14) is mounted on the holding shell (13), and each lighting device (14) is fixed on the holding shell (13) through a universal flexible shaft (15).

5. The split type magnetic particle flaw detector of claim 4, characterized in that: each illuminating device (14) is an LED lamp fixed at the tail end of the universal flexible shaft (15).

6. The split type magnetic particle flaw detector of claim 1, characterized in that: the power module (2) comprises a power box (21) and a lithium ion battery (22) arranged in the power box (21), a power connector (23) is fixed at the bottom of the power box (21), and a power interface for inserting the power connector (23) is formed in the top of the holding shell (13).

7. The split type magnetic particle flaw detector of claim 6, characterized in that: each power supply box (21) is fixedly connected with the holding shell (13) through a fastener (3).

8. The split type magnetic particle flaw detector of claim 7, characterized in that: the fastening piece (3) is a flange nut, the outer surface of the lower end of the power supply box (21) is provided with external threads with the same specification as the flange nut, and the flange surface of the flange nut is fixed to the top of the holding shell (13).

9. The split type magnetic particle flaw detector of claim 1, characterized in that: an information receiving and transmitting device (4) is respectively arranged in each holding shell (13).

10. The split type magnetic particle flaw detector of claim 1, characterized in that: and magnetic field generating switches (112) are arranged on the holding shell (13) of the N-pole flaw detection part and the S-pole flaw detection part.