CN111398747A - Method for detecting use safety of marine cable - Google Patents
Method for detecting use safety of marine cable Download PDFInfo
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- CN111398747A CN111398747A CN202010162272.7A CN202010162272A CN111398747A CN 111398747 A CN111398747 A CN 111398747A CN 202010162272 A CN202010162272 A CN 202010162272A CN 111398747 A CN111398747 A CN 111398747A
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- marine cable
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- 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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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a method for detecting the use safety of a marine cable, which comprises a single-core marine cable with a standard length, wherein the single-core marine cable sequentially passes through a uniform electric field, and when the single-core marine cable passes through the electric field, certain voltage is applied to two ends of the single-core marine cable until the single-core marine cable completely passes through the electric field; detecting whether an insulation structure on the surface of the single-core marine cable is broken down or damaged; if the insulating structure is not broken down or damaged, the insulating structure is qualified; if the insulation structure is broken down or damaged, the insulation structure is not qualified. According to the invention, when the single-core marine cable passes through a uniform electric field, because the cable core body is a conductor, when the insulation structure on the surface of the single-core marine cable has a weak point, the insulation structure at the weak point can be punctured or damaged under the action of a strong electric field, and whether the single-core marine cable is qualified or not is quickly judged according to whether the insulation structure on the surface of the single-core marine cable is punctured or damaged.
Description
Technical Field
The invention relates to the technical field of cable detection, in particular to a method for detecting the use safety of a marine cable.
Background
The marine cable is a special cable, is mainly used in various areas such as ships, water platforms, ports and the like in rivers, lakes and seas, and is generally required to have sufficient performances such as water resistance, flame retardance, corrosion resistance, acid and alkali resistance, flexibility, easiness in bending and the like. With the development of the ship industry, the ship cable is in a hub position in the operation of ships, which plays an important role in the safety of ships and personal and property, so that manufacturers have strict requirements when manufacturing the ship cable, especially when detecting the use safety of the cable.
The marine cable can be divided into: power cables, communication cables, control cables, radio frequency cables, wires, and the like. However, no matter what kind of cable, the insulation performance of the cable is crucial, the existing cable detection mainly carries out detection in an experimental environment by intercepting one section of the cable to be detected, but the detection replaces the whole part with a local part, so that the detection accuracy is reduced, and meanwhile, the intercepting process has the possibility of damaging the original cable structure, so that the detection structure is lack of persuasion. And the cable with the standard length is too long, so that the laboratory detection is inconvenient.
Disclosure of Invention
The invention aims to provide a method for detecting the use safety of a marine cable, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
according to one aspect of the invention, the method for detecting the use safety of the marine cable comprises a standard-length single-core marine cable, wherein the single-core marine cable sequentially passes through a uniform electric field, and when the single-core marine cable passes through the electric field, certain voltage is applied to two ends of the single-core marine cable until all the single-core marine cable passes through the electric field.
And detecting whether the insulation structure on the surface of the single-core marine cable is broken down or damaged.
And if the insulating structure is not broken down or damaged, the insulating structure is qualified.
If the insulation structure is broken down or damaged, the insulation structure is not qualified.
The electric field is formed by two parallel electrode plates with a certain voltage difference value, the electric field intensity changes in a direct proportion along with the change of the two voltage difference values, and the voltage applied to the two ends of the single-core marine cable is the middle value of the voltage on the two electrode plates.
The part of the single-core marine cable in the electric field is parallel to the two electrode plates, and the single-core marine cable in the electric field is positioned in the middle between the two electrode plates.
Wherein, the voltage applied to the two ends of the single-core marine cable is in direct proportion to the thickness of the insulating structure on the surface of the single-core marine cable.
According to another aspect of the invention, the marine cable detection device comprises symmetrically arranged adjustment bases, wherein the top ends of the adjustment bases are respectively provided with a first rotating wheel which is movably connected, the first rotating wheels are in transmission connection with a first motor arranged on one side of the adjustment bases, a rotating shaft is radially fixed on the inner side of each first rotating wheel, a second motor is arranged in the middle of each rotating shaft, winding frames are sleeved on the outer sides of the second motors, single-core marine cables are wound on the winding frames, a uniform electric field is arranged between the first rotating wheels, and the single-core marine cables between the winding frames pass through the electric field.
The circular arc outer side of the first rotating wheel is provided with wheel teeth, the end part of the first motor, which is located on the inner side of the adjusting base, is provided with a gear, and the gear is meshed with the wheel teeth on the circular arc outer side of the first rotating wheel.
Wherein, the inboard upper portion of adjustment base is equipped with a plurality of supplementary roller, the equal contained angle distribution of outer edge along first runner of supplementary roller.
The first rotating wheel rotates synchronously, and when any point on the single-core marine cable completely passes through an electric field, the first rotating wheel rotates at least one circle.
A plurality of fixed shafts are symmetrically distributed on the top of the inner wall of the adjusting base, gaps among the fixed shafts are larger than the diameter of the rotating shaft, and the lower portion of the first rotating wheel is located between the auxiliary roller shaft and the fixed shafts.
The marine single-core cable between the wire reels keeps tensioned, the rotating shaft is provided with a support rod of a V-shaped structure, two ends of the support rod are symmetrically arranged on the rotating shaft, and the top end of the support rod is provided with a positioning ring.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, when the single-core marine cable passes through a uniform electric field, because the cable core body is a conductor, when the insulation structure on the surface of the single-core marine cable has a weak point, the insulation structure at the weak point can be punctured or damaged under the action of a strong electric field, and whether the single-core marine cable is qualified or not is quickly judged according to whether the insulation structure on the surface of the single-core marine cable is punctured or damaged.
2. In the invention, a cable with standard length is wound on one of the winding frames in advance, one end of the single-core marine cable sequentially passes through two positioning rings and between two electrode plates and is wound on the other winding frame, the first motor and the second motor are started, voltages with certain difference are applied to the motor plates, and the single-core marine cable gradually passes through a uniform electric field and is wound on the other winding frame, meanwhile, the first rotating wheel rotates uniformly and synchronously, the single-core marine cable passing through the uniform electric field is driven by the first rotating wheel, rotate the round at least in the electric field, treat that single core marine cable removes to the electric field after, observe whether the insulation system on surface is punctured or is destroyed, utilize single core marine cable to wind the characteristic of the insulation system on surface in order to be punctured, carry out high-efficient quick detection to the cable, can judge whether qualified cable.
Drawings
FIG. 1 is a schematic side view of a marine cable inspection device;
fig. 2 is a schematic view of the internal structure of the marine cable detection device.
In the figure: 1. adjusting the base; 2. a first runner; 3. a first motor; 4. a rotating shaft; 5. a second motor; 6. a bobbin; 7. a gear; 8. an auxiliary roll shaft; 9. a fixed shaft; 10. a stay bar; 11. a retaining ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the technical solution of the present invention is realized as follows:
according to one aspect of the invention, the method for detecting the use safety of the marine cable comprises the steps that a single-core marine cable with a standard length sequentially passes through a uniform electric field, and when the single-core marine cable passes through the electric field, certain voltage is applied to two ends of the single-core marine cable until all the single-core marine cable passes through the electric field.
And detecting whether the insulation structure on the surface of the single-core marine cable is broken down or damaged.
And if the insulating structure is not broken down or damaged, the insulating structure is qualified.
If the insulation structure is broken down or damaged, the insulation structure is not qualified.
The method is suitable for detecting the single-core marine cable, when the single-core marine cable penetrates through a uniform electric field, due to the fact that the cable core body is a conductor, when the insulation structure on the surface of the single-core marine cable has a weak point, the insulation structure on the weak point can be punctured or damaged under the action of a strong electric field, and whether the single-core marine cable is qualified or not is judged quickly according to whether the insulation structure on the surface of the single-core marine cable is punctured or damaged.
The electric field is formed by two parallel electrode plates with a certain voltage difference value, the electric field intensity is changed in a direct ratio along with the change of the two voltage difference values, the voltage applied to the two ends of the single-core marine cable is the middle value of the voltage on the two electrode plates, the electrode plates with the voltage applied in parallel form an even electric field, the strength of the electric field can be adjusted according to the voltage difference value on the two electrode plates, so that the detection of different cables is used, the voltage applied to the two ends of the single-core marine cable is the middle value of the voltage on the two electrode plates, and the phenomenon that the insulating structure is broken down or damaged to generate large discharge is avoided.
The part of the single-core marine cable in the electric field is parallel to the two electrode plates, the single-core marine cable in the electric field is located in the middle between the two electrode plates, and therefore when the single-core marine cable is detected, all parts are detected uniformly, and touch with the electrode plates is avoided.
The voltage applied to two ends of the single-core marine cable is in direct proportion to the thickness of the insulating structure on the surface of the single-core marine cable, and when the insulating structure on the surface of the single-core marine cable is thicker, the voltage difference value between the electrode plates is larger, so that the maximum insulating property can be detected.
According to another aspect of the invention, a marine cable detection device is provided, which comprises symmetrically arranged adjustment bases 1, wherein the top ends of the adjustment bases 1 are respectively provided with a first rotating wheel 2 which is movably connected, the first rotating wheels 2 are in transmission connection with a first motor 3 arranged on one side of the adjustment bases 1, a rotating shaft 4 is radially fixed on the inner side of each first rotating wheel 2, the middle part of each rotating shaft 4 is provided with a second motor 5, the outer side of each second motor 5 is sleeved with a winding frame 6, a single-core marine cable is wound on each winding frame 6, a uniform electric field is arranged between the first rotating wheels 2, and the single-core marine cable between the winding frames 6 passes through the electric field.
The marine single-core cable to be detected is wound on the corresponding winding frames 6, the marine single-core cable passes through an electric field at a constant speed through uniform transmission of the winding frames 6, and efficient and rapid detection is carried out on the cable by utilizing the characteristic that the marine single-core cable is wound on an insulating structure on the surface to be punctured.
Wherein, the circular arc outside of first runner 2 is equipped with the teeth of a cogwheel, and the tip that first motor 3 is located adjustment base 1 inboard is equipped with gear 7, and gear 7 meshes with the teeth of a cogwheel outside the 2 circular arcs of first runner, and first motor 3 passes through gear 7 and drives the uniform velocity of first runner 2 and rotate.
Wherein, the inboard upper portion of adjustment base 1 is equipped with a plurality of supplementary roller 8, and supplementary roller 8 distributes along the equal contained angle in outer edge of first runner 2, and supplementary roller 8 plays the effect that the roll was supported, and evenly distributed's support nature is better.
Wherein, first runner 2 synchronous rotation, and when the electric field was passed through completely to arbitrary point on single core marine cable, first runner 2 rotated the round at least, and two synchronous syntropy rotations of first runner 2 for the insulating structure on single core marine cable surface all intersects with the electric field direction is perpendicular crossing.
Wherein, the symmetric distribution has a plurality of fixed axles 9 on the inner wall top of adjustment base 1, and the clearance between the fixed axle 9 is greater than the diameter of pivot 4, and the lower part of first runner 2 is located between supplementary roller 8 and the fixed axle 9, and the position of first runner 2 is injectd to fixed axle 9, avoids first runner 2 to beat, cooperates supplementary roller 8 to accomplish the roll connection to first runner 2.
The single-core marine cable between the bobbins 6 keeps tensioning, the rotating shaft 4 is provided with the support rod 10 of the V-shaped structure, two ends of the support rod 10 are symmetrically arranged on the rotating shaft 4, the top end of the support rod 10 is provided with the positioning ring 11, and the support rod 10 and the positioning ring 11 keep the position of the single-core marine cable to move constant.
The working principle is as follows:
during detection, a cable with standard length is wound on one of the bobbins 6 in advance, one end of the single-core marine cable sequentially penetrates through the two positioning rings 11 and between the two electrode plates and is wound on the other bobbin, the first motor 3 and the second motor 5 are started, voltages with certain difference are applied to the motor plates, at the moment, the single-core marine cable gradually passes through a uniform electric field and is wound on the other bobbin 6, meanwhile, the first rotating wheel 2 rotates uniformly and synchronously, the single-core marine cable passing through the uniform electric field is driven by the first rotating wheel 2, rotate the round at least in the electric field, treat that single core marine cable removes to the electric field after, observe whether the insulation system on surface is punctured or is destroyed, utilize single core marine cable to wind the characteristic of the insulation system on surface in order to be punctured, carry out high-efficient quick detection to the cable, can judge whether qualified cable.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A method for detecting the use safety of a marine cable comprises a single-core marine cable with standard length, and is characterized in that: the single-core marine cable sequentially passes through a uniform electric field, and when the single-core marine cable passes through the electric field, certain voltage is applied to two ends of the single-core marine cable until all the single-core marine cable passes through the electric field;
detecting whether an insulation structure on the surface of the single-core marine cable is broken down or damaged;
if the insulating structure is not broken down or damaged, the insulating structure is qualified;
if the insulation structure is broken down or damaged, the insulation structure is not qualified.
2. The method for detecting the use safety of the marine cable according to claim 1, wherein: the electric field is formed by two parallel electrode plates with a certain voltage difference value, the electric field intensity changes in a direct proportion along with the change of the two voltage difference values, and the voltage applied to the two ends of the single-core marine cable is the middle value of the voltage on the two electrode plates.
3. The method for detecting the use safety of the marine cable according to claim 2, wherein: the part of the single-core marine cable in the electric field is parallel to the two electrode plates, and the single-core marine cable in the electric field is positioned in the middle between the two electrode plates.
4. The method for detecting the use safety of the marine cable according to claim 1, wherein: the voltage applied to the two ends of the single-core marine cable is in direct proportion to the thickness of the insulating structure on the surface of the single-core marine cable.
5. A marine cable detection device for the marine cable use safety detection method according to claim 1, comprising symmetrically arranged adjustment bases (1), characterized in that: the top of adjustment base (1) all is equipped with swing joint's first runner (2), first runner (2) are connected with first motor (3) transmission of locating adjustment base (1) one side, the inboard of first runner (2) is along radial fixed pivot (4), the middle part of pivot (4) is equipped with second motor (5), and the outside of second motor (5) all overlaps and is equipped with bobbin (6), single core marine cable is around establishing and on bobbin (6), be equipped with even electric field between first runner (2), single core marine cable between bobbin (6) passes through the electric field.
6. The marine cable detection device of claim 5, wherein: the circular arc outside of first runner (2) is equipped with the teeth of a cogwheel, the tip that first motor (3) are located adjustment base (1) inboard is equipped with gear (7), the teeth of a cogwheel meshing in gear (7) and first runner (2) circular arc outside.
7. The marine cable detection device of claim 5, wherein: the inboard upper portion of adjustment base (1) is equipped with a plurality of supplementary roller axle (8), the outer equal contained angle distribution of following first runner (2) of supplementary roller axle (8).
8. The marine cable detection device of claim 5, wherein: the first rotating wheel (2) rotates synchronously, and when any point on the single-core marine cable completely passes through an electric field, the first rotating wheel (2) rotates at least one circle.
9. The marine cable detection device of claim 7, wherein: a plurality of fixed shafts (9) are symmetrically distributed on the top of the inner wall of the adjusting base (1), the gap between the fixed shafts (9) is larger than the diameter of the rotating shaft (4), and the lower part of the first rotating wheel (2) is positioned between the auxiliary roller shaft (8) and the fixed shafts (9).
10. The marine cable detection device of claim 5, wherein: the marine cable of single core between bobbin (6) keeps the tensioning, be equipped with vaulting pole (10) of V-arrangement structure on pivot (4), the both ends symmetry of vaulting pole (10) is located on pivot (4), and the top of vaulting pole (10) is equipped with holding ring (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010162272.7A CN111398747B (en) | 2020-03-10 | 2020-03-10 | Method for detecting use safety of marine cable |
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| CN202010162272.7A CN111398747B (en) | 2020-03-10 | 2020-03-10 | Method for detecting use safety of marine cable |
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