CN117665094A - Magnetic flux leakage detection device and detection method for steel wire rope - Google Patents
Magnetic flux leakage detection device and detection method for steel wire rope Download PDFInfo
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- CN117665094A CN117665094A CN202311866851.XA CN202311866851A CN117665094A CN 117665094 A CN117665094 A CN 117665094A CN 202311866851 A CN202311866851 A CN 202311866851A CN 117665094 A CN117665094 A CN 117665094A
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- 238000001514 detection method Methods 0.000 title claims abstract description 86
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 71
- 239000010959 steel Substances 0.000 title claims abstract description 71
- 230000004907 flux Effects 0.000 title claims abstract description 20
- 239000000523 sample Substances 0.000 claims abstract description 26
- 238000004804 winding Methods 0.000 claims abstract description 15
- 230000005415 magnetization Effects 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000007547 defect Effects 0.000 abstract description 26
- 230000035945 sensitivity Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 4
- 230000006698 induction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000012994 industrial processing Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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Abstract
The invention belongs to the field of steel wire rope detection, and particularly relates to a steel wire rope magnetic flux leakage detection device and a detection method, which are used for solving the problem of inaccurate detection results of the existing magnetic flux leakage detection device, wherein the steel wire rope magnetic flux leakage detection device comprises a probe body, a magnetization component and a magnetic sensitive element; a detection channel for the steel wire rope to be detected to pass through is formed in the middle of the probe body; the magnetizing assembly comprises a plurality of oblique magnets, the oblique magnets are detachably arranged on the probe body, and the oblique magnets encircle the periphery of the detection channel to magnetize the steel wire rope along the winding direction of the rope strand; the magnetic sensitive element is fixedly connected to the probe body and surrounds the periphery of the detection channel. The invention has the advantages that the oblique magnet is used for magnetizing the steel wire rope along the winding direction of the rope strand to generate a magnetic field parallel to the direction of the rope strand, the defects such as wire breakage and the like of the steel wire rope are perpendicular to the winding direction of the rope strand, and the magnetic sensitive element can capture the larger defect leakage magnetic field and sense the smaller rope strand groove signal at the same time, so that the accuracy of the detection structure is improved.
Description
Technical Field
The invention belongs to the field of steel wire rope detection, and particularly relates to a steel wire rope magnetic flux leakage detection device and a detection method.
Background
The steel wire rope can play roles in transmission, bearing, positioning and the like as a flexible rope, so that the steel wire rope is widely applied to the aspects of industrial production, processing and manufacturing, transportation and the like and becomes a key bearing part in different industries. Regular detection of the wire rope is a guarantee of safe operation. The magnetic flux leakage detection technology is widely applied to nondestructive inspection of steel wire ropes due to strong detection penetration capability.
The existing steel wire rope magnetic leakage detection device is provided with magnets, the steel wire rope is magnetized through the magnets, and in steel wire rope detection, the inner defects and the outer defects of the steel wire rope can form a magnetic leakage field under the excitation effect of external strong magnetism so as to be detected by a magnetic sensor. However, the steel wire rope is usually wound by a plurality of small ropes, even if the steel wire rope is free of defects, a leakage magnetic field is generated due to existence of the rope strands, so that interference is generated to a true defect signal, and the interference caused by the rope strand signal cannot be eliminated by the existing steel wire rope leakage magnetic detection device, so that the detection result is inaccurate.
Disclosure of Invention
The invention provides a steel wire rope magnetic flux leakage detection device and a detection method for improving the accuracy of a detection result of the magnetic flux leakage detection device.
The invention provides a steel wire rope magnetic flux leakage detection device which adopts the following technical scheme:
a magnetic flux leakage detection device of a steel wire rope comprises a probe body, a magnetization component and a magnetic sensitive element; a detection channel for the steel wire rope to be tested to pass through is formed in the middle of the probe body; the magnetizing assembly comprises a plurality of oblique magnets, the oblique magnets are detachably arranged on the probe body, and the oblique magnets encircle the periphery of the detection channel to magnetize the steel wire rope along the winding direction of the rope strand; the magnetic sensing element is fixedly connected to the probe body and surrounds the periphery of the detection channel.
Through adopting above-mentioned technical scheme, when detecting wire rope, make wire rope pass the detection channel, magnetization subassembly is magnetized the wire rope after, detect defect magnetic leakage field through the magnetism sensing element, thereby analyze wire rope's defect, through setting up slant magnet, make wire rope along strand winding direction magnetization, the magnetic induction line is on a parallel with strand slot direction, produce the magnetic field that is on a parallel with strand direction, avoided producing the magnetic field between strand and the strand, the magnetic field signal that the strand produced has been reduced, and wire rope wire breakage scheduling defect is perpendicular with the strand winding direction, have the magnetic leakage field of maximize in defect department, when magnetism sensing element sweeps, can catch great defect magnetic leakage field and sense little strand slot signal as far as possible simultaneously, improve the degree of accuracy of detecting the structure.
As a further preferable aspect, the oblique magnet is parallel to a winding direction of the strand of the wire rope to be tested in the detection channel.
By adopting the technical scheme, the oblique magnet is kept parallel to the winding direction of the rope strand, a magnetic field parallel to the direction of the rope strand is generated, the interference of magnetic field signals generated by the rope strand is reduced as much as possible, and the accuracy of the detection result is improved.
As a further preferred feature, the magnetically sensitive elements are magnetically sensitive in the direction of the grooves of the strands of the steel cord.
By adopting the technical scheme, the direction of the rope strand signal magnetic leakage field is mainly perpendicular to the direction of the rope strand groove of the steel wire rope, the components along the direction of the rope strand groove are fewer, and the defect magnetic leakage field is distributed in all directions, so that when the magnetic sensitivity direction of the magnetic sensitive element is along the direction of the rope strand groove, the components of the rope strand signal in the signal detected by the magnetic sensitive element are reduced, and the influence of the rope strand signal on the detection result is further reduced.
As a further preferable mode, the probe body comprises two annular sleeves and a connecting sleeve fixedly connected between the two annular sleeves, the two annular sleeves and the connecting sleeve are coaxially arranged, the detection channel penetrates through the middle parts of the annular sleeves and the connecting sleeve, a plurality of mounting grooves are formed in the peripheral wall of the annular sleeve, and the oblique magnet is arranged in the mounting grooves.
Through adopting above-mentioned technical scheme, the slant magnet is installed in the mounting groove position more stable, and through setting up two annular sleeves, can increase the magnetization scope to wire rope to improve the testing result degree of accuracy to wire rope.
As a further preferable aspect, the oblique magnet includes a plurality of magnet units having a rectangular structure, the outer peripheral wall of the magnet units is attached to the inner wall of the mounting groove, and the plurality of magnet units are sequentially connected to form a whole along the depth direction of the mounting groove.
Through adopting above-mentioned technical scheme, connect into wholly through a plurality of magnet units to install it in the mounting groove, through increasing the quantity of magnet unit in order to increase magnetization power, make when detecting different specification wire ropes, can increase and decrease the quantity of magnet unit.
As a further preferable mode, positioning grooves are formed in four corners of the mounting groove, and the four corners of the magnet unit are located in the positioning grooves.
Through adopting above-mentioned technical scheme, magnet unit installs in the mounting groove, and its four angles department is located the constant head tank, avoids the corner of magnet unit to take place to extrude and causes the damage.
As a further preferred feature, the outer diameter of the connecting sleeve is smaller than the outer diameter of the annular sleeve, and the magnetically sensitive element is fixedly connected to the outer wall of the connecting sleeve.
By adopting the technical scheme, the groove is formed between the connecting sleeve and the annular sleeve, the magnetic sensitive element is connected to the outer wall of the connecting sleeve, and the magnetic sensitive element is not easy to contact with other parts, so that a certain protection effect is achieved on the magnetic sensitive element.
As a further preferable mode, the two annular sleeves are provided with guide openings communicated with the detection channels, and the inner diameters of the guide openings are larger than the inner diameters of the detection channels.
By adopting the technical scheme, the wire rope to be tested can be quickly and accurately inserted into the detection channel from the guide opening, and the installation efficiency is improved.
As a further preferred feature, the magnetically sensitive element is a coil or a hall.
Through adopting above-mentioned technical scheme, select suitable magnetism sensing element according to the different problems of detection wire rope, select hall when measuring wire rope surface abrasion, select the coil when measuring wire rope internal defect, can improve and detect the precision.
The invention provides a method for detecting magnetic leakage of a steel wire rope, which adopts the following technical scheme:
a method for detecting magnetic leakage of a steel wire rope comprises the following steps:
step one: mounting the oblique magnet and the magnetic sensitive element on the probe body;
step two: threading the steel wire rope to be tested into a detection channel and moving in the detection channel;
step three: signals picked up by the magnetically sensitive elements on the probe body are detected.
In summary, the invention at least comprises the following beneficial technical effects:
when the steel wire rope is detected, the steel wire rope passes through the detection channel, the magnetization component is used for detecting a defect leakage magnetic field through the magnetic sensitive element after magnetizing the steel wire rope, so that the defect of the steel wire rope is analyzed, the oblique magnet is arranged to enable the steel wire rope to be magnetized along the winding direction of the rope strand, the magnetic induction line is parallel to the groove direction of the rope strand, a magnetic field parallel to the direction of the rope strand is generated, the magnetic field generated between the rope strands is avoided, magnetic field signals generated by the rope strands are reduced, the defect such as wire breakage of the steel wire rope is perpendicular to the winding direction of the rope strand, the maximized leakage magnetic field is arranged at the defect, and when the magnetic sensitive element scans, the larger defect leakage magnetic field can be captured, and meanwhile, the rope strand groove signals which are as small as possible are sensed, so that the accuracy of the detection structure is improved.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present invention;
FIG. 2 is a schematic elevational view of an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic diagram of the detection signal when the magnetic sensitivity direction of the magnetic sensitive element is along the axial direction of the steel wire rope;
fig. 5 is a schematic diagram of the detection signal when the direction of the magnetic sensitivity of the magnetic sensitive element is along the direction of the strand of the steel wire rope.
The same reference numbers are used throughout the drawings to reference like elements or structures, wherein:
1. a probe body; 11. a detection channel; 12. an annular sleeve; 121. a mounting groove; 122. a positioning groove; 123. a guide opening; 13. connecting sleeves; 2. a magnetizing assembly; 21. an oblique magnet; 211. a magnet unit; 3. a magnetically sensitive element.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like indicate orientations or positional relationships that are shown based on the drawings, merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The invention is described in further detail below with reference to fig. 1-5.
The invention discloses a magnetic flux leakage detection device for a steel wire rope.
Referring to fig. 1 and 2, a wire rope magnetic flux leakage detection device is used for nondestructive inspection of a wire rope and comprises a probe body 1, a magnetization component 2 and a magnetic sensitive element 3; the middle part of the probe body 1 is provided with a detection channel 11, when the steel wire rope is detected, the steel wire rope passes through the detection channel 11, after the steel wire rope is magnetized by the magnetizing assembly 2, the defect leakage magnetic field is detected by the magnetic sensitive element 3, so that the defects of the surface and the inside of the steel wire rope are analyzed.
As a preferred embodiment, the magnetizing assembly 2 comprises a plurality of slant magnets 21, the plurality of slant magnets 21 are detachably arranged on the probe body 1, a magnetizing field is led into the body surface of the steel wire rope in a magnetic loop mode, the slant magnets 21 are parallel to the winding direction of the rope strand of the steel wire rope to be detected in the detection channel 11, the plurality of slant magnets 21 encircle the periphery of the detection channel 11 to magnetize the steel wire rope along the winding direction of the rope strand, a magnetic induction line is parallel to the groove direction of the rope strand, a magnetic field parallel to the direction of the rope strand is generated, the magnetic field generated between the rope strand and the rope strand is avoided, magnetic field signals generated by the rope strand are reduced, the interference of the magnetic field signals generated by the rope strand is reduced, meanwhile, defects such as broken wires of the steel wire rope are perpendicular to the winding direction of the rope strand, and the maximum leakage magnetic field is arranged at the defect, when the magnetic sensitive element 3 scans, the large defect leakage magnetic field can be captured, meanwhile the rope groove signals are sensed as small as possible, and the accuracy of the detection structure is improved.
In order to detect the leakage magnetic field of the steel wire rope, the magnetic sensitive element 3 is fixedly connected to the probe body 1 and surrounds the periphery of the detection channel 11, specifically, the magnetic sensitive element 3 adopts a coil or a Hall, the proper magnetic sensitive element 3 is selected according to different problems of the mainly detected steel wire rope, the Hall is selected when the surface of the steel wire rope is worn, and the coil is selected when the internal defect of the steel wire rope is detected, so that the detection accuracy can be improved; the magnetic sensitivity direction of the magnetic sensitive element 3 is arranged along the direction of the rope strand groove, the direction of the rope strand signal leakage magnetic field is mainly perpendicular to the direction of the rope strand groove, the components along the direction of the rope strand groove are fewer, and the defect leakage magnetic field is distributed in all directions, so that when the magnetic sensitivity direction of the magnetic sensitive element 3 is along the direction of the rope strand groove, the components of the rope strand signal in the magnetic sensitive element detection signal are reduced, the rope strand signal is restrained, and the influence of the rope strand signal on the detection result of the steel wire rope is reduced.
In this embodiment, in order to increase the magnetizing range of the steel wire rope, the probe body 1 includes two annular sleeves 12 made of aluminum and a connecting sleeve 13 fixedly connected between the two annular sleeves 12, and the two annular sleeves 12 and the connecting sleeve 13 are coaxially and fixedly connected, the detection channel 11 penetrates through the middle parts of the annular sleeves 12 and the connecting sleeve 13, in other embodiments, two ends of the connecting sleeve 13 can be respectively connected with two annular sleeves 12 in a threaded manner to form a whole, the outer diameter of the connecting sleeve 13 is smaller than that of the annular sleeve 12, a groove is formed between the connecting sleeve 13 and the annular sleeve 12, the magnetic sensing element 3 is fixedly connected to the outer wall of the connecting sleeve 13, the magnetic sensing element 3 is not easy to contact with other parts, and a certain protection effect is achieved on the magnetic sensing element 3.
A plurality of mounting grooves 121 are uniformly formed in the peripheral walls of the two annular sleeves 12 at equal intervals, the oblique magnets 21 are mounted in the mounting grooves 121, and a steel wire rope passes through the detection channel 11 to magnetize the steel wire rope; each oblique magnet 21 comprises a plurality of magnet units 211 with rectangular structures, the outer peripheral walls of the magnet units 211 are attached to the inner walls of the mounting grooves 121, and the plurality of magnet units 211 are sequentially connected into a whole along the depth direction of the mounting grooves 121, so that the number of the magnet units 211 can be increased and decreased when detecting steel wire ropes with different specifications in practice by increasing the number of the magnet units 211 to increase magnetization power; in order to facilitate the assembly and disassembly of the magnet unit 211 and avoid the damage thereof, the four corners of the installation groove 121 are provided with positioning grooves 122, and the four corners of the magnet unit 211 are positioned in the positioning grooves 122, so that the four corners of the magnet unit 211 are prevented from being crushed and broken.
The two annular sleeves 12 are provided with the guide openings 123 communicated with the detection channels 11, the inner diameters of the guide openings 123 are larger than the inner diameters of the detection channels 11, and the steel wire ropes to be detected can be quickly and accurately inserted into the detection channels 11 from the guide openings 123, so that the installation efficiency is improved.
The invention also discloses a method for detecting the magnetic leakage of the steel wire rope.
A method for detecting magnetic leakage of a steel wire rope comprises the following steps:
step one: the oblique magnet 21 and the magnetic sensitive element 3 are arranged on the probe body 1, specifically, the magnetic sensitive element 3 is fixedly connected to the peripheral wall of the connecting sleeve 13, a certain number of magnet units 211 are embedded into the mounting groove 121 on the annular sleeve 12 according to the specification of the steel wire rope to be tested, the oblique magnet 21 magnetizes the steel wire rope along the strand direction, and the magnetic sensitive element 3 detects a leakage magnetic field generated by the defect of the steel wire rope;
step two: the steel wire rope to be tested is penetrated through the detection channel 11 and moves in the detection channel 11, and the steel wire rope to be tested is relatively displaced with the annular sleeve 12 and the connecting sleeve 13;
step three: the magnetic sensitive element 3 is connected with a signal collecting device through a signal output line, the signal collecting device is used for detecting the signal picked up by the magnetic sensitive element 3 on the probe body 1, and the signal collecting device is common equipment in the field.
The above embodiments are not intended to limit the scope of the present invention, so: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (10)
1. The steel wire rope magnetic flux leakage detection device is characterized by comprising a probe body (1), a magnetization component (2) and a magnetic sensitive element (3);
a detection channel (11) for the steel wire rope to be tested to pass through is formed in the middle of the probe body (1);
the magnetizing assembly (2) comprises a plurality of oblique magnets (21), the oblique magnets (21) are detachably arranged on the probe body (1), and the oblique magnets (21) encircle the periphery of the detection channel (11) to magnetize the steel wire rope along the winding direction of the rope strand;
the magnetic sensing element (3) is fixedly connected to the probe body (1) and surrounds the periphery of the detection channel (11).
2. A wire rope magnetic flux leakage detection device according to claim 1, characterized in that the oblique magnet (21) is parallel to the direction of winding the strands of the wire rope to be detected in the detection channel (11).
3. A wire rope magnetic leakage detection device according to claim 1, characterized in that the magnetically sensitive direction of the magnetically sensitive element (3) is arranged in the direction of the wire rope strand groove.
4. The steel wire rope magnetic flux leakage detection device according to claim 1, wherein the probe body (1) comprises two annular sleeves (12) and a connecting sleeve (13) fixedly connected between the two annular sleeves (12), the two annular sleeves (12) and the connecting sleeve (13) are coaxially arranged, the detection channel (11) penetrates through the middle parts of the annular sleeves (12) and the connecting sleeve (13), a plurality of mounting grooves (121) are formed in the peripheral wall of the annular sleeve (12), and the inclined magnet (21) is arranged in the mounting grooves (121).
5. The wire rope magnetic flux leakage detection device according to claim 4, wherein the oblique magnet (21) comprises a plurality of magnet units (211) having a rectangular structure, the outer peripheral wall of the magnet units (211) is attached to the inner wall of the installation groove (121), and the plurality of magnet units (211) are sequentially connected into a whole along the depth direction of the installation groove (121).
6. The wire rope magnetic flux leakage detection device according to claim 5, wherein positioning grooves (122) are formed in four corners of the installation groove (121), and the four corners of the magnet unit (211) are located in the positioning grooves (122).
7. A wire rope magnetic flux leakage detection device according to claim 4, characterized in that the outer diameter of the connecting sleeve (13) is smaller than the outer diameter of the annular sleeve (12), and the magnetically sensitive element (3) is fixedly connected to the outer wall of the connecting sleeve (13).
8. The wire rope magnetic flux leakage detection device according to claim 4, wherein two annular sleeves (12) are provided with guide openings (123) communicated with the detection channels (11), and the inner diameter of each guide opening (123) is larger than that of each detection channel (11).
9. A wire rope magnetic leakage detection device according to claim 1, characterized in that the magnetically sensitive element (3) is a coil or a hall.
10. A method for detecting magnetic leakage of a steel wire rope by using the detection device as claimed in any one of claims 1 to 9, comprising the steps of:
step one: the oblique magnet (21) and the magnetic sensitive element (3) are arranged on the probe body (1);
step two: threading the steel wire rope to be tested into the detection channel (11) and moving in the detection channel (11);
step three: and detecting signals picked up by the magnetic sensitive element (3) on the probe body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311866851.XA CN117665094A (en) | 2023-12-29 | 2023-12-29 | Magnetic flux leakage detection device and detection method for steel wire rope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311866851.XA CN117665094A (en) | 2023-12-29 | 2023-12-29 | Magnetic flux leakage detection device and detection method for steel wire rope |
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| Publication Number | Publication Date |
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| CN117665094A true CN117665094A (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311866851.XA Pending CN117665094A (en) | 2023-12-29 | 2023-12-29 | Magnetic flux leakage detection device and detection method for steel wire rope |
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| CN (1) | CN117665094A (en) |
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- 2023-12-29 CN CN202311866851.XA patent/CN117665094A/en active Pending
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