CN212964763U - Metal pipeline defect pulse eddy current testing device - Google Patents
Metal pipeline defect pulse eddy current testing device Download PDFInfo
- Publication number
- CN212964763U CN212964763U CN202022098723.3U CN202022098723U CN212964763U CN 212964763 U CN212964763 U CN 212964763U CN 202022098723 U CN202022098723 U CN 202022098723U CN 212964763 U CN212964763 U CN 212964763U
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- Prior art keywords
- exciting coil
- coil
- eddy current
- metal pipeline
- magnetic core
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- Expired - Fee Related
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Abstract
The utility model discloses a metal pipeline defect pulse eddy current testing device, including the cylinder skeleton, the cylinder skeleton outside has two exciting coil and a receiving coil around the axis winding of cylinder skeleton, two exciting coil include exciting coil and exciting coil A, exciting coil A and receiving coil twine in the cylinder skeleton outside in proper order, and exciting coil A is the same with exciting coil and receiving coil interval, exciting coil and exciting coil A establish ties and exciting coil is connected with the signal line, receiving coil is connected with signal line A, still be provided with the magnetic core in the cylinder skeleton; the utility model discloses an electromagnetic field intensity that two exciting coils and magnetic core effect made the space excitation increases and the energy is concentrated, has magnetic field focusing ability, and manufacturing process is simple, and performance safe and reliable ensures the metal pipeline local defect relevance ratio, improves detectivity, provides key component for pulse eddy current method detects the metal pipeline defect.
Description
Technical Field
The utility model belongs to the technical field of metal pipeline detects, a metal pipeline defect pulse eddy current testing device is related to.
Background
At present, the petroleum pipeline transportation industry develops rapidly, pipeline transportation and sea, land, air and railway transportation become five transportation systems, for example, land transportation generally adopts road transportation, and the characteristics of short distance and high speed are achieved; the railway transportation volume is large, but the time period of transportation to the destination is long, and the transportation cost is low; the speed of air transportation has the advantages that other transportation industries cannot reach, but the cost is high, strict requirements are imposed on articles, and water transportation can generally meet the requirement of mass material transportation, but is mainly used in cities such as coastal areas and the like and is greatly influenced by geographical environments. Therefore, pipeline transportation is mainly adopted in the petroleum industry of China, and with the increase of the online service life of a pipeline and the long-term use of the pipeline in the underground with severe environment, the phenomena of corrosion wall thickness thinning or perforation and the like of a metal pipeline are caused, flammable and explosive media in the pipeline are leaked into the air, if open fire occurs, explosion is caused, and potential safety hazards are brought to the life and property safety of people.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a metal pipeline defect pulse eddy current testing device has solved and has had to exist among the prior art and lack the problem that constraint ability and sensitivity are low to the space magnetic field.
The utility model provides a technical scheme who adopts is, a metal pipeline defect pulse eddy current testing device, including the cylinder skeleton, the cylinder skeleton outside has two exciting coil and a receiving coil, two around the axis winding of cylinder skeleton exciting coil includes exciting coil and exciting coil A, exciting coil A and receiving coil twine in the cylinder skeleton outside in proper order, and exciting coil A is the same with exciting coil and receiving coil interval, exciting coil and exciting coil A establish ties and exciting coil are connected with the signal line, and receiving coil is connected with signal line A, still be provided with the magnetic core in the cylinder skeleton.
The utility model discloses a characteristics still lie in:
wherein the exciting coil is arranged close to the top of the cylindrical framework;
wherein, insulating layers are arranged among the exciting coil A, the exciting coil and the receiving coil;
the magnetic core is a cylindrical magnetic core, and the magnetic core is positioned in the cylindrical framework and is coaxial with the cylindrical framework;
the outer layer of the cylinder of the magnetic core is wrapped with tetrafluoro cloth, and the magnetic core is tightly connected with the cylinder framework through the tetrafluoro cloth;
the detection device further comprises an insulator sealing shell, the cylindrical framework is located in the shell, and the signal wire A extend out of the shell.
The utility model has the advantages that:
the utility model discloses a metal pipeline defect pulse eddy current testing device, the electromagnetic field intensity that makes the space excitation through two exciting coil and magnetic core effect increases and the energy is concentrated, has magnetic field focusing ability, and manufacturing process is simple, and performance safe and reliable ensures the local defect relevance ratio of metal pipeline, improves detectivity, provides key component for pulse eddy current method detects the metal pipeline defect.
Drawings
Fig. 1 is a schematic diagram of the general structure of a metal pipeline defect pulse eddy current inspection device of the present invention;
fig. 2 is a cross-sectional view of a metal pipeline defect pulse eddy current testing device of the present invention;
fig. 3 is an outline view of the metal pipeline defect pulse eddy current inspection device of the present invention.
In the figure, 1 is an exciting coil, 2 is an exciting coil A, 3 is a receiving coil, 4 is an insulating layer, 5 is a magnetic core, 6 is teflon, 7 is a cylindrical framework, 8 is a signal wire, 9 is a signal wire A, 10 is a shell.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a metal pipeline defect pulse eddy current testing device, as shown in figure 1, comprising a cylindrical framework 7, two exciting coils and a receiving coil 3 are wound outside the cylindrical framework 7 around the axis of the cylindrical framework 7, the two exciting coils comprise an exciting coil 1 and an exciting coil A2, which are all formed by winding thick enameled wires, and the receiving coil 3 is formed by winding thin enameled wires; exciting coil 1, exciting coil A2 and receiving coil 3 twine in the cylinder skeleton 7 outside in proper order, and exciting coil 1 is close to the top setting of cylinder skeleton 7, and exciting coil A2 is the same with exciting coil 1 and receiving coil 3 interval, all is provided with insulating layer 4 between exciting coil A2 and exciting coil 1 and the receiving coil 3, exciting coil 1 and exciting coil A2 establish ties and exciting coil 1 is connected with signal line 8, receiving coil 3 is connected with signal line A9, still be provided with magnetic core 5 in the cylinder skeleton 7, magnetic core 5 is the magnetic core of cylinder type, and magnetic core 5 is located cylinder skeleton 7 inside and cylinder skeleton 7 is coaxial, the outer parcel of cylinder of magnetic core 5 has tetrafluoro cloth 6, and magnetic core 5 passes through tetrafluoro cloth 6 and cylinder skeleton 7 zonulae occludens, the detection device still includes insulator seal shell 10 as shown in FIG. 2 and FIG. 3, cylinder skeleton 7 is located shell 10, and the signal line 8 and the signal line a9 extend out of the housing 10; the magnetic field intensity of space excitation is increased and the energy is concentrated through the action of the two exciting coils and the magnetic core, the magnetic field focusing capacity is realized, the manufacturing process is simple, the performance is safe and reliable, the detection rate of local defects of the metal pipeline is ensured, the detection sensitivity is improved, and a key part is provided for detecting the defects of the metal pipeline by a pulse eddy current method.
Claims (6)
1. The utility model provides a metal pipeline defect pulse eddy current testing device, a serial communication port, including cylinder skeleton (7), cylinder skeleton (7) outside has two exciting coil and a receiving coil (3) around the axis winding of cylinder skeleton (7), two exciting coil includes exciting coil (1) and exciting coil A (2), exciting coil (1), exciting coil A (2) and receiving coil (3) twine in cylinder skeleton (7) outside in proper order, and exciting coil A (2) are the same with exciting coil (1) and receiving coil (3) interval, exciting coil (1) and exciting coil A (2) establish ties and exciting coil (1) are connected with signal line (8), and receiving coil (3) are connected with signal line A (9), still be provided with magnetic core (5) in cylinder skeleton (7).
2. A metal pipe defect pulsed eddy current inspection device according to claim 1, wherein the excitation coil (1) is arranged near the top of the cylindrical skeleton (7).
3. The metal pipeline defect pulse eddy current testing device according to claim 1, wherein an insulating layer (4) is arranged between the exciting coil A (2) and the exciting coil (1) and the receiving coil (3).
4. The metal pipeline defect pulse eddy current testing device according to claim 1, wherein the magnetic core (5) is a cylindrical magnetic core, and the magnetic core (5) is located inside the cylindrical framework (7) and is coaxial with the cylindrical framework (7).
5. The metal pipeline defect pulse eddy current testing device according to claim 4, wherein the cylindrical outer layer of the magnetic core (5) is wrapped with the tetrafluoro cloth (6), and the magnetic core (5) is tightly connected with the cylindrical framework (7) through the tetrafluoro cloth (6).
6. The metal pipeline defect pulse eddy current inspection device according to claim 1, wherein the inspection device further comprises an insulator sealing shell (10), the cylindrical framework (7) is located in the shell (10), and the signal wire (8) and the signal wire A (9) extend out of the shell (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022098723.3U CN212964763U (en) | 2020-09-23 | 2020-09-23 | Metal pipeline defect pulse eddy current testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022098723.3U CN212964763U (en) | 2020-09-23 | 2020-09-23 | Metal pipeline defect pulse eddy current testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212964763U true CN212964763U (en) | 2021-04-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022098723.3U Expired - Fee Related CN212964763U (en) | 2020-09-23 | 2020-09-23 | Metal pipeline defect pulse eddy current testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212964763U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116068044A (en) * | 2023-03-21 | 2023-05-05 | 辽宁锂想科技有限公司 | Multichannel multi-frequency weld joint flaw detection device |
-
2020
- 2020-09-23 CN CN202022098723.3U patent/CN212964763U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116068044A (en) * | 2023-03-21 | 2023-05-05 | 辽宁锂想科技有限公司 | Multichannel multi-frequency weld joint flaw detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210413 Termination date: 20210923 |