CN210221902U - Magnetic field focusing transient electromagnetic pipeline defect scanning device - Google Patents
Magnetic field focusing transient electromagnetic pipeline defect scanning device Download PDFInfo
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- CN210221902U CN210221902U CN201920852100.5U CN201920852100U CN210221902U CN 210221902 U CN210221902 U CN 210221902U CN 201920852100 U CN201920852100 U CN 201920852100U CN 210221902 U CN210221902 U CN 210221902U
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Abstract
The utility model discloses a magnetic field focused transient electromagnetic pipeline defect scanning device, which comprises a plurality of probes, transient electromagnetic equipment and a data processing terminal, wherein the probes comprise an input end and an output end, and the transient electromagnetic equipment is respectively connected with the input end of the probe, the output end of the probe and the data processing terminal; the plurality of probes are connected in series or in parallel, the probes connected in series or in parallel are arranged in a circular shape, and the contact part of the bottom of each probe and the pipeline is an arc-shaped surface; the device can realize the purposes of quickly scanning the internal defects of the active pipeline and efficiently positioning the abnormal corrosion position.
Description
Technical Field
The utility model relates to a chemical industry gathering and transportation pipeline fault detection technical field, concretely relates to magnetic field focusing's transition electromagnetic pipeline defect sweeps and looks into device.
Background
In the operation process of basic chemical industry and petroleum refining devices, monitoring the wall thickness reduction state of pipelines with high heavy corrosion risks is very necessary, and the traditional ultrasonic thickness gauge is generally adopted for fixed-point thickness measurement.
The traditional fixed-point thickness measuring system depends on relevant risk standards and expert experience for point selection, cannot adapt to complex and variable environments on site, often causes missed detection or fails to detect the area with the most serious defects, and has more defects. The ultrasonic thickness gauge fixed-point thickness measurement solves the problem of accurate residual wall thickness data (estimation residual emphasis), but cannot solve the accuracy of detecting the distribution point position. The existing transient electromagnetic method can realize pulse eddy current scanning of a certain wall thickness and achieve the purpose of quickly positioning the defect position. But the pipeline with thicker coating layer and thicker wall thickness is difficult to realize quick penetration, the defect can be positioned only by adopting means of reducing frequency and the like, and the problem of quickly positioning the defect position by the pulse eddy current cannot be solved.
In view of the technical problems in the prior art, the application of the focusing function is urgently needed to achieve the purpose of quickly scanning and positioning the defects of the pipeline with a thicker coating layer and a thicker pipe wall thickness, so that the problems of slower scanning speed, low accuracy and the like of the pipeline with the larger wall thickness are solved.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a magnetic field focused transient electromagnetic pipeline defect scanning device, including a plurality of probes, transient electromagnetic equipment and data processing terminal, the probe includes input and output, transient electromagnetic equipment respectively with the input of probe, the output of probe and data processing terminal are connected; the probes are connected in series or in parallel, the probes connected in series or in parallel are arranged in a circular shape, and the contact part of the bottom of each probe and the pipeline is an arc-shaped surface.
When the probes are connected in series, the output end of one probe is connected with the input end of the other probe, and the output end of the other probe is connected with the transient electromagnetic equipment and forms annular emission.
When the probes are connected in parallel, the plurality of probes share one output end and one input end to be connected with the transient electromagnetic equipment, and simultaneously emit excitation pulse eddy currents.
Several probes may be separate transmit and receive signals and connected to the transient electromagnetic device.
The probe comprises a transmitting probe and a receiving probe, wherein the transmitting probe is provided with a plurality of transmitting probes, and the receiving probe is respectively connected with the plurality of transmitting probes and the transient electromagnetic equipment.
The transmitting probes are uniformly distributed by taking the receiving probe as a center.
The transmitting probes are uniformly distributed with the length of 40mm-500mm by taking the receiving probe as a center.
The number of probes is 2-6.
The contact part of the bottom of the probe and the pipeline is an arc-shaped surface, and the diameter of the arc-shaped surface is 30-600 mm.
And the probe is connected with the transient electromagnetic equipment by adopting a cable.
Compared with the prior art, the beneficial effects of the utility model are that: the probes form different focusing modes through series connection and parallel connection, so that the purposes of quickly scanning and positioning the defects of the pipeline with a thicker coating layer and a thicker pipe wall are achieved, and the problems of lower scanning speed, low accuracy and the like of the pipeline with the thicker wall are solved; when the probes are connected in parallel, the pipeline with a relatively high wall thickness value can be detected; the pipeline wall thickness with a relatively small wall thickness value can be detected by series connection, the detection range is 2-30mm, the series connection working speed is high, and the purpose of quick scanning can be met; meanwhile, in order to facilitate the tight connection of the probes and the pipeline or a coating layer outside the pipeline, the probes connected in series or in parallel are circularly arranged, and the contact part of the bottom of each probe and the pipeline is an arc-shaped surface.
Drawings
Fig. 1 shows the structure of the transient electromagnetic pipeline defect scanning device of the present invention;
fig. 2 is a schematic structural view of the probe and the connecting seat of the present invention;
FIG. 3 is a schematic view of a series structure of probes according to the present invention;
FIG. 4 is a schematic view of a parallel structure of probes according to the present invention;
fig. 5 is a schematic view of the installation structure of the transmitting probe and the receiving probe of the present invention.
In the drawings: 1 is a probe, 2 is a transient electromagnetic device, 3 is a data processing terminal, 4 is a connecting seat, 11 is a transmitting probe, and 12 is a receiving probe.
Detailed Description
The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-5, a magnetic field focused transient electromagnetic pipeline defect scanning device comprises a plurality of probes 1, a transient electromagnetic device 2 and a data processing terminal 3, wherein each probe 1 comprises an input end and an output end, and the transient electromagnetic device 2 is respectively connected with the input end of each probe, the output end of each probe and the data processing terminal 3; the probes are connected in series or in parallel, the probes connected in series or in parallel are arranged in a circular manner, and the contact part of the bottom of the probe 1 and the pipeline is an arc-shaped surface. The probes form different focusing modes through series connection and parallel connection, so that the purposes of quickly scanning and positioning the defects of the pipeline with a thicker coating layer and a thicker pipe wall are achieved, and the problems of lower scanning speed, low accuracy and the like of the pipeline with the thicker wall are solved; when the probes are connected in parallel, the pipeline with a relatively high wall thickness value can be detected, the thickness is 2-50mm, but the working speed is relatively low compared with that of the pipeline connected in series; the pipeline wall thickness with a relatively small wall thickness value can be detected by series connection, the detection range is 2-30mm, the series connection working speed is high, and the purpose of quick scanning can be met; meanwhile, in order to facilitate the tight connection between the probe and the pipeline or the coating layer outside the pipeline, the probes connected in series or in parallel are arranged in a circular shape, the contact part between the bottom of the probe 1 and the pipeline is an arc-shaped surface, in this embodiment, the probe 1 is installed on the connecting seat 4, and the contact part between the connecting seat 4 and the pipeline is also an arc-shaped surface.
In the working process, the probe is matched with transient electromagnetic equipment, so that the aims of quickly scanning the internal defects of the active pipeline and efficiently positioning the abnormal corrosion position can be fulfilled; the probe 1 firstly receives an electromagnetic pulse signal transmitted by the transient electromagnetic equipment 2, then the electromagnetic pulse signal is transmitted by the probe to the pipeline or a coating layer outside the pipeline, the probe can generate a voltage signal aiming at a defective part, the voltage signal is transmitted to the transient electromagnetic equipment 2, the transient electromagnetic equipment 2 receives the voltage signal, the voltage signal is generated to a data processing terminal, the wall thickness value is obtained through analysis, and then scanning of the defect is completed.
In the above embodiment, the strength of the magnetic field of the probe is adjusted according to the change of voltage, the voltage adjustment range is 2V to 24V, when the voltage is increased, a larger inductance is generated in the coil of the probe, and the inductance is a key parameter for measuring the magnetic field, so that the larger the inductance is, the stronger the magnetic field capability is, the larger the wall thickness of the pipeline can be detected, and in the using process, the voltage is adjusted according to the wall thickness value to increase the detection capability of the probe.
When the probes 1 are connected in series, the output end of one probe is connected with the input end of the other probe, and the output end of the other probe is connected with the transient electromagnetic equipment 2 and forms annular emission; the voltage signal fed back by the probe is received by the transient electromagnetic device 2.
When the probes are connected in parallel, the plurality of probes share one output end and one input end to be connected with the transient electromagnetic equipment 2, and simultaneously emit excitation pulse eddy currents, and voltage signals fed back by the probes are received by the transient electromagnetic equipment 2.
When the probes are transmitted in series or in parallel, a plurality of probes 1 can transmit and receive signals separately and are connected with the transient electromagnetic equipment 2.
When the probes are transmitted in series or in parallel, the probe 1 comprises a plurality of transmitting probes 11 and a plurality of receiving probes 12, wherein the plurality of transmitting probes 11 are arranged, the receiving probes 12 are respectively connected with the plurality of transmitting probes 11 and the transient electromagnetic equipment 2, and the transmitting probes 11 are uniformly distributed by taking the receiving probes 12 as the center; the length of the transmitting probes 11 is 40mm-500mm by taking the receiving probes 12 as the center.
In the embodiment, the number of the probes is 2-6, and different focusing effects can be realized by changing the number, the structure and the positions of the probes, so that the method can adapt to different pipeline wall thickness values and meet the detection requirement of the pipe diameter and the wall thickness of 2-50 mm.
The diameter of the contact part of the bottom of the probe 1 and the pipeline is an arc-shaped surface and is 30-600mm, so that the probe 1 can be tightly connected with the pipeline or a coating layer outside the pipeline.
Meanwhile, in order to ensure the stability of transmission, a cable is adopted for connecting the probe 1 and the transient electromagnetic equipment 2.
In the work, owing to need carry out the excitation through pulse voltage electric current, so probe 1 can appear the phenomenon of inflation when work, in order to avoid appearing wearing and tearing because the inflation between the probe 1, embedment flexible glue (not shown in the attached drawing) on probe 1, the flexible glue can play fixed and buffering's effect simultaneously, has protected the life of each probe and device.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a magnetic field focusing's transient electromagnetism pipeline defect scanning device which characterized in that: the device comprises a plurality of probes (1), transient electromagnetic equipment (2) and a data processing terminal (3), wherein the probes (1) comprise input ends and output ends, and the transient electromagnetic equipment (2) is respectively connected with the input ends of the probes, the output ends of the probes and the data processing terminal (3); the probes are connected in series or in parallel, the probes connected in series or in parallel are arranged in a circular manner, and the contact part of the bottom of the probe (1) and the pipeline is an arc-shaped surface.
2. The magnetic field focused transient electromagnetic pipeline defect scanning device of claim 1, wherein: when the probes (1) are connected in series, the output end of one probe is connected with the input end of the other probe, and the output end of the other probe is connected with the transient electromagnetic equipment (2) and forms annular emission.
3. The magnetic field focused transient electromagnetic pipeline defect scanning device of claim 1, wherein: when the probes (1) are connected in parallel, the probes share one output end and one input end to be connected with the transient electromagnetic equipment (2), and simultaneously emit excitation pulse eddy currents.
4. The magnetic field focused transient electromagnetic pipeline defect scanning device according to any one of claims 1-3, wherein: several probes (1) can be used to transmit and receive signals separately and connected to the transient electromagnetic device (2).
5. The magnetic field focused transient electromagnetic pipeline defect scanning device according to any one of claims 1-3, wherein: the probe (1) comprises a transmitting probe (11) and a receiving probe (12), wherein the transmitting probe (11) is provided with a plurality of probes, and the receiving probe (12) is respectively connected with the transmitting probes (11) and the transient electromagnetic equipment (2).
6. The magnetic field focused transient electromagnetic pipeline defect scanning apparatus of claim 5, wherein: the transmitting probes (11) are uniformly distributed by taking the receiving probe (12) as the center.
7. The magnetic field focused transient electromagnetic pipeline defect scanning apparatus of claim 6, wherein: the transmitting probes (11) are uniformly distributed with the length of 40mm-500mm by taking the receiving probe (12) as a center.
8. The magnetic field focused transient electromagnetic pipeline defect scanning device of claim 1, wherein: the number of probes is 2-6.
9. The magnetic field focused transient electromagnetic pipeline defect scanning device of claim 1, wherein: the diameter of the contact part of the bottom of the probe (1) and the pipeline is an arc-shaped surface and is 30-600 mm.
10. The magnetic field focused transient electromagnetic pipeline defect scanning device of claim 1, wherein: the probe (1) is connected with the transient electromagnetic equipment (2) through a cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920852100.5U CN210221902U (en) | 2019-06-06 | 2019-06-06 | Magnetic field focusing transient electromagnetic pipeline defect scanning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920852100.5U CN210221902U (en) | 2019-06-06 | 2019-06-06 | Magnetic field focusing transient electromagnetic pipeline defect scanning device |
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| Publication Number | Publication Date |
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| CN210221902U true CN210221902U (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920852100.5U Expired - Fee Related CN210221902U (en) | 2019-06-06 | 2019-06-06 | Magnetic field focusing transient electromagnetic pipeline defect scanning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146591A (en) * | 2019-06-06 | 2019-08-20 | 天津特米斯科技有限公司 | A kind of transient electromagnetic defect of pipeline scanning equipment that magnetic field focuses |
-
2019
- 2019-06-06 CN CN201920852100.5U patent/CN210221902U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146591A (en) * | 2019-06-06 | 2019-08-20 | 天津特米斯科技有限公司 | A kind of transient electromagnetic defect of pipeline scanning equipment that magnetic field focuses |
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Granted publication date: 20200331 |
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