CN116864262A - Magnetizing device and magnetizing method for submarine cable - Google Patents
Magnetizing device and magnetizing method for submarine cable Download PDFInfo
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- CN116864262A CN116864262A CN202310774227.0A CN202310774227A CN116864262A CN 116864262 A CN116864262 A CN 116864262A CN 202310774227 A CN202310774227 A CN 202310774227A CN 116864262 A CN116864262 A CN 116864262A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000001514 detection method Methods 0.000 claims abstract description 118
- 230000005415 magnetization Effects 0.000 claims abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 4
- 230000008569 process Effects 0.000 claims description 19
- 239000013535 sea water Substances 0.000 claims description 10
- 230000004907 flux Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 description 17
- 230000006872 improvement Effects 0.000 description 14
- 238000013461 design Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
- H01F13/003—Methods and devices for magnetising permanent magnets
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/07—Hall effect devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/14—Submarine cables
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a magnetizing device of a submarine cable, which comprises a magnetizing coil, wherein the magnetizing coil is electrically connected with an alternating current power supply, a cable which is used for being laid on the seabed is movably connected to the axis of the magnetizing coil, an armor layer is arranged on the outer layer of the cable, and the magnetizing coil is used for magnetizing the armor layer; the invention also discloses a magnetization method of the submarine cable, which comprises the following steps: the magnetizing coil is installed and positioned, the cable passes through the magnetizing coil, the detecting device is installed, the magnetizing coil is connected with an alternating current power supply and electrified, the cable is movably laid, the cable subjected to magnetizing passes through the detecting device in sequence, magnetizing quality is ensured, and magnetizing measurement data of the cable are recorded. The invention provides a magnetizing device and a magnetizing method for a submarine cable, which provide more accurate detection precision for a magnetic detection method and reduce detection errors.
Description
Technical Field
The invention belongs to the field of cable detection, and particularly relates to a magnetizing device and a magnetizing method of a submarine cable.
Background
With the continuous development of offshore resource development, submarine cables are increasingly used. However, in the use process of the submarine cable, the submarine cable needs to be inspected and maintained regularly due to the harshness of the submarine application environment, and when the submarine cable is damaged, the submarine cable needs to be maintained timely, and in the inspection, maintenance and maintenance process, the problem that the submarine cable is difficult to accurately detect easily occurs due to poor direction sense of the seabed and deviation of ocean currents to the submarine cable.
In order to solve the problem of detecting submarine cables, an optical detection method, an acoustic detection method, an electrical detection method and a magnetic detection method are mainly used, wherein the magnetic detection method is wider than other three using scenes. The magnetic detection method has high detection precision and is not influenced by water quality and soil, but the target cable needs to have certain magnetism, the detection distance is different according to the size of the magnetic field, and meanwhile, the application range of the detection method is limited because of the weakening of the magnetic field by seawater and the influence of other possibly existing metal substances and magnetic substances on the periphery, and the distance from the cable is generally required to be not more than 1 meter, so that the detection effect is greatly influenced.
Disclosure of Invention
The invention provides a magnetizing device and a magnetizing method for a submarine cable, which provide more accurate detection precision for a magnetic detection method and reduce detection errors.
The invention solves the problems by adopting the following technical scheme: the utility model provides a magnetizing device of submarine cable, includes the coil that magnetizes, the alternating current power supply is connected to the coil electricity that magnetizes, the epaxial removal of coil that magnetizes is connected with the cable that is used for laying at the seabed, the skin of cable is equipped with the armor, the coil that magnetizes is used for magnetizing the armor, the coil that magnetizes is magnetized when the cable is laid, and every section accomplishes the cable quick travel to the sea water that magnetizes.
Compared with the prior art, the invention has the advantages that: the method is characterized in that the armor layer of the cable is woven by steel wire materials, the armor layer is magnetized by an alternating current power supply, a sine magnetic field with the same frequency as the alternating current power supply is formed on the armor layer along the axial direction of the cable, then the magnetized cable is quickly moved to sea water, the phenomenon of demagnetization of the armor layer is avoided, the permanence of the magnetic field of the armor layer is guaranteed, therefore, the magnetism of the armor layer can be maintained without adopting permanent magnet materials, the detection cost is reduced, in the detection process, the area where the cable is located can be judged according to the magnetic field change received by the detector, for example, the detector is moved in parallel with the cable in the moving process of the detector, the received magnetic field is continuously enhanced, the detector is indicated to move towards the cable, the detector is comprehensively judged to move towards the cable direction through the change trend of the sine wave and the strong and weak change of the magnetic field, and when the detector only collects the strong and weak change of the magnetic field in the moving process, whether the sine wave change exists or not is observed by the detector, if the sine wave change exists, the detector is judged to be interfered, and the magnetic field is detected in the non-detection area, and the magnetic field accuracy of the cable is high, and the accuracy of the magnetic field is realized.
As an improvement, the magnetizing coil is provided with a detection device for detecting the magnetic field of the cable on one side after magnetizing, through the improvement, the sine wave type magnetic field intensity formed on the cable is ensured, the magnetizing result is confirmed, and meanwhile, when detecting, detection contrast can be performed by referring to the sine wave type formed by the detection device.
As an improvement, detection device includes link and detection wheel, the detection wheel offsets with the upper end of cable, be equipped with drive encoder and hall sensor on the detection wheel, drive encoder is through the rotation of detection wheel to measure the lay length of cable, hall sensor is used for detecting the magnetic field intensity of cable and detection wheel offset position, through the improvement, through drive encoder to measure the length of cable, through hall sensor detection magnetic field intensity to can take notes a magnetic field intensity in the corresponding position department of every cable, then form the distribution curve of magnetic field intensity through the line, finally obtain a sine wave curve.
As an improvement, detection device still includes an idler and two side wheels, the one end of link is located to the detection wheel, the idler is located the other end of link just the idler also offsets with the upper end of cable, two the both sides of link are located respectively to the side wheel and two side wheels offset with the both sides of cable respectively, through the improvement, through the design of detection wheel and idler, can stabilize detection device's supporting stability, avoid detection device deflection's the circumstances to appear in the testing process to cause the deviation of detection device and cable offset effect and the deviation of detection offset position, through the design of two side wheels, can guarantee detection device's equilibrium, avoid detection device to the both sides slope.
As an improvement, the side wheel is connected with the connecting frame through adjusting the pole, the one end of adjusting the pole is rotated with the side wheel and is connected, the other end of adjusting the pole is articulated with the connecting frame, be equipped with the spring between adjusting the pole and the connecting frame, through the improvement, can guarantee the state of offing between side wheel and the cable, when the skew appears in the laying process of cable, adjust the pole and also can utilize the spring to carry out synchronous regulation, guarantee detection device's equilibrium, also can make detection device be applicable to the cable of different cable footpaths simultaneously.
As an improvement, be equipped with the cantilever between link and the coil that magnetizes, the one end of cantilever is articulated with the coil that magnetizes, the other end of cantilever is articulated with the link, the length of cantilever is greater than the scope of influence of the coil that magnetizes, through the improvement, through the design of cantilever, can guarantee the distance and the uniformity between the coil detection device that magnetizes, avoid at the testing process, detection device follows the cable and removes, guarantee cable magnetic field intensity distribution curve's accuracy, and the length of cantilever is greater than the scope of influence of the coil that magnetizes simultaneously, then in order to reduce the magnetic field interference of coil to detection device that magnetizes, also in order to guarantee cable magnetic field intensity distribution curve's accuracy.
A magnetizing method of submarine cable, magnetize the cable through a magnetizing device of submarine cable, the steps are as follows:
s1: the magnetizing coil is installed and positioned, and the distance from the magnetized cable to the sea water is minimized under the condition that the magnetizing requirement and the detecting requirement are met;
s2: the cable passes through the magnetizing coil at least 2 meters;
s3: installing a detection device, and enabling the detection device to be propped against the cable;
s4: the magnetizing coil is connected with an alternating current power supply and electrified to magnetize the cable;
s5: the cable is laid in a moving way, so that the cable subjected to magnetization sequentially passes through the detection device, and the magnetization quality is ensured;
s6: magnetization measurement data of the cable is recorded.
Compared with the prior art, the invention has the advantages that: the method is characterized in that the armor layer of the cable is woven by steel wire materials, the armor layer is magnetized by an alternating current power supply, a sine magnetic field with the same frequency as the alternating current power supply is formed on the armor layer along the axial direction of the cable, then the magnetized cable is quickly moved to sea water, the phenomenon of demagnetization of the armor layer is avoided, the permanence of the magnetic field of the armor layer is guaranteed, therefore, the magnetism of the armor layer can be maintained without adopting permanent magnet materials, the detection cost is reduced, in the detection process, the area where the cable is located can be judged according to the magnetic field change received by the detector, for example, the detector is moved in parallel with the cable in the moving process of the detector, the received magnetic field is continuously enhanced, the detector is indicated to move towards the cable, the detector is comprehensively judged to move towards the cable direction through the change trend of the sine wave and the strong and weak change of the magnetic field, and when the detector only collects the strong and weak change of the magnetic field in the moving process, whether the sine wave change exists or not is observed by the detector, if the sine wave change exists, the detector is judged to be interfered, and the magnetic field is detected in the non-detection area, and the magnetic field accuracy of the cable is high, and the accuracy of the magnetic field is realized. In step S2, the cable passes through the magnetizing coil at least 2 meters, so as to support the cable conveniently, prevent the cable from tilting, and be unfavorable for the accuracy of magnetizing the cable.
In step S3, the detection device is set along the axial direction of the cable through the detection wheel and the idler wheel, so as to complete the offset support of the detection device on the cable, the detection device is respectively offset with two sides of the cable through the two side wheels, the movement stability of the detection device on the cable is ensured, through the improvement, the support stability of the detection device can be stabilized through the design of the detection wheel and the idler wheel, the deflection of the detection device in the detection process is avoided, the offset effect of the detection device and the cable is caused, the offset position is detected, the balance of the detection device can be ensured through the design of the two side wheels, and the detection device is prevented from inclining towards two sides.
In step S3, the distance between the detection device and the magnetizing coil is ensured through the cantilever, the detection accuracy of the detection device is ensured, and by the improvement, the distance and consistency between the magnetizing coil detection device can be ensured through the design of the cantilever, so that the detection device is prevented from moving along with the cable in the detection process, and the accuracy of the magnetic field intensity distribution curve of the cable is ensured.
As improvement, in the detection process, the method further comprises a step S7 of manually checking the magnetic field intensity of the cable after magnetization through a magnetic flux magnetic field indicator, and verifying the magnetic field of the cable after magnetization through the improvement, so that detection errors caused by faults of a detection device are avoided, and the magnetizing quality is ensured.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic cross-sectional view of a cable of the present invention passing through a magnetizing coil.
Fig. 3 is a schematic view of the connection structure between the side wheel and the cable of the present invention.
The figure shows: 1. magnetizing coil, 2, cable, 2.1, armor, 3, detection device, 3.1, link, 3.2, detection wheel, 3.3, drive encoder, 3.4, hall sensor, 3.5, idler, 3.6, side wheel, 3.7, regulation pole, 3.8, spring, 4, cantilever, 5, support frame, 5.1, cylinder.
Detailed Description
Embodiments of the present invention are further described below with reference to the accompanying drawings.
As shown in fig. 1-2, a magnetizing device for a submarine cable comprises a magnetizing coil 1, wherein the magnetizing coil 1 is electrically connected with an alternating current power supply, a cable 2 used for being laid on the seabed is movably connected to the axis of the magnetizing coil 1, an armor layer 2.1 is arranged on the outer layer of the cable 2, the magnetizing coil 1 is used for magnetizing the armor layer 2.1, the magnetizing coil 1 is used for magnetizing the cable 2 when the cable 2 is laid, and each section of the cable 2 which completes magnetizing is quickly moved into seawater.
As shown in fig. 1 and 3, the magnetizing coil 1 is provided with a detection device 3 for detecting the magnetic field of the cable 2 on one side of the magnetizing coil, the detection device 3 comprises a connecting frame 3.1 and a detection wheel 3.2, the detection wheel 3.2 is propped against the upper end of the cable 2, the detection wheel 3.2 is provided with a driving encoder 3.3 and a hall sensor 3.4, the driving encoder 3.3 measures the laying length of the cable 2 by rotating the detection wheel 3.2, the hall sensor 3.4 is used for detecting the magnetic field intensity of the position propped against the cable 2 and the detection wheel 3.2, the detection device 3 also comprises an idler wheel 3.5 and two side wheels 3.6, the detection wheel 3.2 is arranged at one end of the connecting frame 3.1, the idler wheel 3.5 is arranged at the other end of the connecting frame 3.1, the detection wheel 3.5 is propped against the upper end of the cable 2, the detection device 3 is arranged on the axial direction of the cable 2 through the detection wheel 3.2 and the idler wheel 3.5, the detection wheel 3.2 is arranged on the two sides of the connecting frame 3.7, the two adjusting rods are arranged on the two sides of the connecting frame 3.7 and the connecting frame 3.7, the two side wheels 3.7 are respectively, the two adjusting rods are connected with the two side frames 3.7, and the two side frames 3.7 are respectively connected with the two side frames 3.7, and the two side frames 3.6 are respectively, and the two side frames 3.7 are respectively, and the two side frames 3 and the two side frames are respectively, and the two side frames are connected.
The driving encoder 3.3 and the hall sensor 3.4 are conventional detection spare parts.
Cantilever 4 is arranged between link 3.1 and magnetizing coil 1, the one end of cantilever 4 is articulated with magnetizing coil 1, the other end of cantilever 4 is articulated with link 3.1, the length of cantilever 4 is greater than magnetizing coil 1's scope of influence, guarantees the distance between detection device 3 and magnetizing coil 1 through cantilever 4, guarantees detection device 3 detection accuracy.
A magnetizing method of submarine cable, magnetizes cable 2 by a magnetizing device of submarine cable, the steps are as follows:
s1: the magnetizing coil 1 is installed and positioned, and the distance from the magnetized cable 2 to the sea water is minimized under the condition that the magnetizing requirement and the detecting requirement are met;
s2: the cable 2 passes through the magnetizing coil 1 at a distance of at least 2 meters;
s3: mounting the detection device 3, and enabling the detection device 3 to be propped against the cable 2;
s4: the magnetizing coil 1 is connected with an alternating current power supply and electrified to magnetize the cable 2;
s5: the cable 2 is movably paved, so that the cable 2 subjected to magnetizing sequentially passes through the detection device 3, and the magnetizing quality is ensured;
s6: magnetization measurement data of the cable 2 is recorded.
S7: the magnetic field strength of the cable 2 after magnetization is checked manually by means of a flux field indicator.
The magnetic flux magnetic field indicator is a conventional handheld detection device 3, and when detection is needed, a detector holds the magnetic flux magnetic field indicator by hand, so that the cable 2 can read the magnetic field intensity.
In the magnetizing process of the cable 2, the cable 2 is preferably kept horizontally at all times, so that the design of the support frame 5 is added on one side of the magnetizing coil 1 where the magnetizing is completed, the distance between the support frame 5 and the magnetizing coil 1 is not smaller than the distance between the detecting device 3 and the magnetizing coil 1, the supporting height of the support frame 5 is identical to the magnetizing height of the magnetizing coil 1, the cable 2 between the support frame 5 and the magnetizing coil 1 is kept in a horizontal state, and the detecting stability of the detecting device 3 is further guaranteed. Meanwhile, the abutting end of the supporting frame 5 and the magnetizing coil 1 abuts against the magnetizing coil 1 through the roller 5.1, so that the roller 5.1 acts as a fixed pulley, and the roller plays a role in stabilizing steering when being paved in seawater subsequently.
In the process of detecting the cable 2 through the detector on the sea bottom, if the detector is in a stable sine wave change in the moving process, the detector is indicated to move parallel to the cable 2, and the received magnetic field is continuously enhanced, the detector is indicated to move towards the cable 2, so that the position of the cable 2 is comprehensively judged through the change trend of the sine wave and the strength change of the magnetic field, the detector is guided to move towards the cable 2, and when the detector only collects the strength change of the magnetic field in the moving process, the detector can be transversely moved to observe whether the sine wave change exists, if not, the detection magnetic field is judged to be an interference magnetic field and is not a magnetic field of the area where the cable 2 is located, and therefore the high-precision detection of the detector on the cable 2 is realized.
The foregoing is illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. A magnetizing device for a submarine cable, characterized by: including magnetizing coil (1), AC power supply is connected to magnetizing coil (1) electricity, the epaxial removal of magnetizing coil (1) is connected with cable (2) that are used for laying at the seabed, the skin of cable (2) is equipped with armor (2.1), magnetizing coil (1) are used for magnetizing armor (2.1), magnetizing coil (1) magnetizes when cable (2) are laid, and cable (2) that each section completed magnetizing moves to in the sea water fast.
2. A magnetizing apparatus of a submarine cable according to claim 1, characterized in that: the magnetizing coil (1) is provided with a detection device (3) for detecting the magnetic field of the cable (2) at one side after magnetizing.
3. A magnetizing apparatus of a submarine cable according to claim 2, characterized in that: the detection device (3) comprises a connecting frame (3.1) and a detection wheel (3.2), the detection wheel (3.2) is propped against the upper end of the cable (2), a driving encoder (3.3) and a Hall sensor (3.4) are arranged on the detection wheel (3.2), the driving encoder (3.3) is used for measuring the laying length of the cable (2) through the rotation of the detection wheel (3.2), and the Hall sensor (3.4) is used for detecting the magnetic field intensity of the propped position of the cable (2) and the detection wheel (3.2).
4. A magnetizing apparatus of a submarine cable according to claim 3, characterized in that: the detection device (3) further comprises an idler wheel (3.5) and two side wheels (3.6), the detection wheel (3.2) is arranged at one end of the connecting frame (3.1), the idler wheel (3.5) is arranged at the other end of the connecting frame (3.1) and is also propped against the upper end of the cable (2), and the two side wheels (3.6) are respectively arranged at two sides of the connecting frame (3.1) and the two side wheels (3.6) are respectively propped against two sides of the cable (2).
5. A magnetizing apparatus of a submarine cable according to claim 4, characterized in that: the side wheel (3.6) is connected with the connecting frame (3.1) through adjusting the pole (3.7), the one end of adjusting the pole (3.7) is connected with the side wheel (3.6) rotation, the other end of adjusting the pole (3.7) is articulated with the connecting frame (3.1), be equipped with spring (3.8) between adjusting the pole (3.7) and the connecting frame (3.1).
6. A magnetizing apparatus of a submarine cable according to claim 2, characterized in that: cantilever (4) are arranged between the connecting frame (3.1) and the magnetizing coil (1), one end of the cantilever (4) is hinged with the magnetizing coil (1), the other end of the cantilever (4) is hinged with the connecting frame (3.1), and the length of the cantilever (4) is larger than the influence range of the magnetizing coil (1).
7. A method of magnetizing a submarine cable, by magnetizing a cable (2) with a magnetizing apparatus of one of the submarine cables of claims 1-6, characterized by the steps of:
s1: the magnetizing coil (1) is installed and positioned, and the distance from the magnetized cable (2) to the sea water is minimized under the condition that the magnetizing requirement and the detecting requirement are met;
s2: the cable (2) passes through the magnetizing coil (1) at a distance of at least 2 meters;
s3: installing a detection device (3), and enabling the detection device (3) to be propped against the cable (2);
s4: the magnetizing coil (1) is connected with an alternating current power supply and electrified to magnetize the cable (2);
s5: the cable (2) is movably paved, so that the cable (2) subjected to magnetizing sequentially passes through the detection device (3), and the magnetizing quality is ensured;
s6: magnetization measurement data of the cable (2) are recorded.
8. A method of magnetizing a submarine cable according to claim 7, characterized by: in the step S3, the detection device (3) is arranged along the axial direction of the cable (2) through the detection wheel (3.2) and the idler wheel (3.5), the propping support of the detection device (3) on the cable (2) is completed, the detection device (3) is propped against the two sides of the cable (2) through the two side wheels (3.6) respectively, and the movement stability of the detection device (3) on the cable (2) is ensured.
9. A method of magnetizing a submarine cable according to claim 7, characterized by: in step S3, the distance between the detection device (3) and the magnetizing coil (1) is ensured through the cantilever (4), and the detection accuracy of the detection device (3) is ensured.
10. A method of magnetizing a submarine cable according to claim 7, characterized by: the detection process further comprises a step S7 of manually checking the magnetic field intensity of the cable (2) after magnetization through a magnetic flux magnetic field indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310774227.0A CN116864262A (en) | 2023-06-28 | 2023-06-28 | Magnetizing device and magnetizing method for submarine cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310774227.0A CN116864262A (en) | 2023-06-28 | 2023-06-28 | Magnetizing device and magnetizing method for submarine cable |
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| Publication Number | Publication Date |
|---|---|
| CN116864262A true CN116864262A (en) | 2023-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310774227.0A Pending CN116864262A (en) | 2023-06-28 | 2023-06-28 | Magnetizing device and magnetizing method for submarine cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN116864262A (en) |
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2023
- 2023-06-28 CN CN202310774227.0A patent/CN116864262A/en active Pending
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