CN221311370U - High-temperature-resistant electromagnetic ultrasonic transducer - Google Patents
High-temperature-resistant electromagnetic ultrasonic transducer Download PDFInfo
- Publication number
- CN221311370U CN221311370U CN202323196089.7U CN202323196089U CN221311370U CN 221311370 U CN221311370 U CN 221311370U CN 202323196089 U CN202323196089 U CN 202323196089U CN 221311370 U CN221311370 U CN 221311370U
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- coil
- ultrasonic transducer
- electromagnetic ultrasonic
- permanent magnet
- power supply
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- 239000011148 porous material Substances 0.000 claims abstract description 10
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 14
- 238000009529 body temperature measurement Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 230000005415 magnetization Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Abstract
The utility model provides a high-temperature-resistant electromagnetic ultrasonic transducer, and relates to the technical field of electromagnetic ultrasonic transducers. The electromagnetic ultrasonic transducer comprises a shell, wherein the shell is provided with a mounting pore passage in a penetrating way, one end of the mounting pore passage is provided with a coil group, the mounting pore passage at the inner side of the coil group is provided with a permanent magnet, and the permanent magnet is sleeved with a power supply coil; and one end of the mounting hole channel, which is far away from the coil assembly, is provided with a connector which is electrically connected with the coil assembly and the power supply coil simultaneously. The utility model can be used in a high temperature state and has higher practicability.
Description
Technical Field
The utility model relates to the technical field of electromagnetic ultrasonic transducers, in particular to a high-temperature-resistant electromagnetic ultrasonic transducer.
Background
The electromagnetic ultrasonic transducer is widely applied to metal detection technology, utilizes electromagnetic induction to keep away, directly excites ultrasonic waves on the metal surface and propagates along a certain direction, has the characteristics of non-contact and no need of coupling, and is generally used for thickness measurement, temperature measurement or defect detection of metal.
The electromagnetic ultrasonic transducer comprises a shell, a single coil structure and a permanent magnet, when the electromagnetic ultrasonic transducer is applied to a high-temperature environment, the magnetization intensity of the permanent magnet is reduced along with the temperature rise, and when the temperature rises to a certain value, the magnetization intensity of the permanent magnet is reduced to zero, so that demagnetization is realized, and the electromagnetic ultrasonic transducer does not have the function of high-temperature detection.
Disclosure of utility model
The utility model aims to provide a high-temperature-resistant electromagnetic ultrasonic transducer which can be used in a high-temperature state and has higher practicability.
The technical scheme of the utility model is realized as follows:
The technical scheme of the application provides a high-temperature-resistant electromagnetic ultrasonic transducer, which comprises a shell, wherein the shell is provided with a mounting pore passage in a penetrating way, one end of the mounting pore passage is provided with a coil group, the mounting pore passage at the inner side of the coil group is provided with a permanent magnet, and the permanent magnet is sleeved with a power supply coil;
And one end of the mounting hole channel, which is far away from the coil assembly, is provided with a connector which is electrically connected with the coil assembly and the power supply coil simultaneously.
In some embodiments of the present utility model, the coil assembly includes a spiral coil and a butterfly coil, and the spiral coil and the butterfly coil are overlapped along an extension direction of the mounting hole;
The spiral coil and the butterfly coil are independently electrically connected to the connector.
In some embodiments of the utility model, the connector comprises three positive terminals and one negative terminal, the three positive terminals electrically connecting the spiral coil, the butterfly coil, and the power supply coil, respectively;
The negative electrode connector is electrically connected with the spiral coil, the butterfly coil and the power supply coil.
In some embodiments of the utility model, the mounting hole outside the coil assembly is provided with a wear layer.
In some embodiments of the present utility model, a magnetic conductive sheet is provided between the coil assembly and the permanent magnet.
In some embodiments of the utility model, the mounting hole is provided with an upper cover, and the connector is provided on the upper cover.
Compared with the prior art, the technical scheme of the utility model has at least the following advantages or beneficial effects:
(1) In the utility model, the power supply coil is wound around the permanent magnet, when high-frequency pulse current is introduced into the power supply coil, an alternating magnetic field is generated around the power supply coil, so that the permanent magnet can be magnetized, the magnetization intensity of the permanent magnet is reduced due to the influence of high temperature when the permanent magnet is placed, and meanwhile, the magnetic field can be provided for replacing the permanent magnet when the permanent magnet fails. The utility model can be used in a high temperature state and has higher practicability.
(2) When the spiral coil and the butterfly coil are respectively and independently used, the utility model has the functions of thickness measurement, temperature measurement and defect detection.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a high temperature resistant electromagnetic ultrasonic transducer according to an embodiment of the present utility model;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is a schematic diagram of a butterfly coil according to an embodiment of the present utility model;
Fig. 4 is a schematic structural diagram of a spiral coil according to an embodiment of the present utility model.
Icon: the device comprises a shell, a 2-upper cover, a 3-connector, a 4-positive electrode connector, a 5-permanent magnet, a 6-power supply coil, a 7-magnetic conduction sheet, an 8-spiral coil, a 9-butterfly coil, a 10-wear-resistant layer and an 11-mounting duct.
Detailed Description
Examples
Referring to fig. 1-4, a high temperature resistant electromagnetic ultrasonic transducer includes a housing 1, a mounting hole 11 is formed in the housing 1, a coil assembly is disposed at one end of the mounting hole 11, the coil assembly is in a planar structure, the planar structure is disposed along a radial direction of the mounting hole 11, a permanent magnet 5 is disposed in the mounting hole 11 inside the coil assembly, a magnetic pole of the permanent magnet 5 is disposed along an axial direction of the mounting hole 11, the permanent magnet 5 is perpendicular to the coil assembly, a power supply coil 6 is sleeved on the permanent magnet 5, and the power supply coil 6 is a high frequency coil.
The end of the mounting hole 11 remote from the coil assembly is provided with a connector 3 for electrically connecting the coil assembly and the power supply coil 6 at the same time.
In the utility model, the power supply coil 6 is wound around the permanent magnet 5, when high-frequency pulse current is introduced into the power supply coil 6, an alternating magnetic field is generated around the power supply coil 6, so that the permanent magnet 5 can be magnetized, the magnetization of the permanent magnet 5 is reduced due to the influence of high temperature when the permanent magnet 5 is placed, and meanwhile, the magnetic field can be provided for replacing the permanent magnet 5 when the permanent magnet 5 fails. The utility model can be used in a high temperature state and has higher practicability.
In some embodiments of the present utility model, the coil assembly includes a spiral coil 8 and a butterfly coil 9, and the spiral coil 8 and the butterfly coil 9 are overlapped along an extension direction of the mounting hole 11;
The spiral coil 8 and the butterfly coil 9 are electrically connected to the connector 3 independently.
In the above embodiment, the spiral coil 8 is suitable for nondestructive testing in the structural member, the butterfly coil 9 is suitable for thickness measurement and temperature measurement, and when the spiral coil 8 and the butterfly coil 9 are respectively and independently electrified for use, the utility model has the functions of thickness measurement, temperature measurement and defect detection.
The spiral coil 8 is wound by a wire and is in an axisymmetric structure, the permanent magnet 5 is opposite to the center of the spiral coil 8, and the magnetic fields at two sides of the central shaft are equal in size and opposite in direction to the eddy current. Therefore, the directions of Lorentz forces applied to the mass points at the two sides of the central shaft are opposite, so that the mass points periodically contract, expand and vibrate, ring-shaped ultrasonic waves are excited in a test piece and spread, and the device is more suitable for nondestructive detection in the structure. Because the Lorentz force of the particles at the central axis is zero, the vibration displacement of the particles is also zero, two independent ultrasonic waves are excited at two sides of the central axis to form two side lobes, the ultrasonic wave propagation at the central axis is not generated, and the propagation time and path of the ultrasonic wave in the medium cannot truly reflect the ultrasonic wave propagation characteristics at the central axis, so the ultrasonic wave vibration displacement measuring device is not suitable for thickness measurement or temperature measurement.
The butterfly coil 9 is wound by a wire and is provided with a structure with two D-shaped parts in two areas, the vertical parts of the two D-shaped parts are oppositely arranged, the current directions in the vertical parts of the two D-shaped parts are the same, the magnet faces the center between the two D-shaped parts, the permanent magnet 5 generates a vertical magnetic field in the center part, so that the directions of Lorentz forces born by particles in a test piece below the center part of the utility model are the same, excited ultrasonic waves are mainly concentrated in the center area, and the directivity of a sound field is good, so that the butterfly coil is suitable for thickness measurement or temperature measurement.
In some embodiments of the present utility model, the connector 3 includes three positive terminals 4 and one negative terminal, and the three positive terminals 4 are electrically connected to the spiral coil 8, the butterfly coil 9, and the power supply coil 6, respectively;
The negative electrode terminal is electrically connected to the spiral coil 8, the butterfly coil 9 and the power supply coil 6 at the same time.
In the above embodiment, the three positive electrode connectors 4 can be independently powered on through the connector 3, so that the spiral coil 8 and the butterfly coil 9 can be independently used, and when the spiral coil 8 and the independent coil are independently used, the power supply of the power supply coil 6 is required to be powered on.
In some embodiments of the utility model, the mounting hole 11 outside the coil assembly is provided with a wear layer 10.
In the above embodiment, when the housing 1 is positioned on the surface of the object, the abrasion resistant layer 10 holds the object to scratch the spiral coil 8 or the butterfly coil 9, and has a protective effect on the coil.
In some embodiments of the present utility model, a magnetic conductive sheet 7 is provided between the coil assembly and the permanent magnet 5.
In the above embodiment, the magnetic conductive sheet 7 is used to strengthen or concentrate the magnetic field lines generated by the permanent magnet 5, and can play a role in suppressing electromagnetic interference and noise.
In the above embodiment, the upper cover 2 is of a circular ring structure, the upper cover 2 is disposed at the port of the mounting hole 11, the connector 3 is disposed inside the upper cover 2, and the connector 3 and the upper cover 2 are detachably connected by the bolt group to achieve the detachable arrangement of the connector 3.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. The high-temperature-resistant electromagnetic ultrasonic transducer is characterized by comprising a shell, wherein a mounting pore canal is formed in the shell in a penetrating manner, a coil group is arranged at one end of the mounting pore canal, a permanent magnet is arranged in the mounting pore canal at the inner side of the coil group, and a power supply coil is sleeved on the permanent magnet;
And one end of the mounting pore channel, which is far away from the coil assembly, is provided with a connector which is electrically connected with the coil assembly and the power supply coil at the same time.
2. The high temperature resistant electromagnetic ultrasonic transducer of claim 1, wherein the coil assembly comprises a spiral coil and a butterfly coil, the spiral coil and the butterfly coil being arranged in overlapping relation along the extension direction of the mounting tunnel;
the spiral coil and the butterfly coil are independently and electrically connected with the connector.
3. The high temperature resistant electromagnetic ultrasonic transducer of claim 2, wherein the connector comprises three positive terminals and one negative terminal, the three positive terminals electrically connecting the spiral coil, butterfly coil and power supply coil, respectively;
the negative electrode connector is electrically connected with the spiral coil, the butterfly coil and the power supply coil simultaneously.
4. The electromagnetic ultrasonic transducer of claim 1, wherein the mounting hole on the outside of the coil assembly is provided with a wear layer.
5. The electromagnetic ultrasonic transducer of claim 1, wherein a magnetic conductive sheet is disposed between the coil assembly and the permanent magnet.
6. The electromagnetic ultrasonic transducer of claim 1, wherein the mounting tunnel is provided with an upper cover, and the connector is disposed on the upper cover.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221311370U true CN221311370U (en) | 2024-07-12 |
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