CN110133033B - Omnibearing efficient online detection device for composite insulator umbrella skirt - Google Patents
Omnibearing efficient online detection device for composite insulator umbrella skirt Download PDFInfo
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- CN110133033B CN110133033B CN201910230407.6A CN201910230407A CN110133033B CN 110133033 B CN110133033 B CN 110133033B CN 201910230407 A CN201910230407 A CN 201910230407A CN 110133033 B CN110133033 B CN 110133033B
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- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
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Abstract
The invention discloses an all-dimensional high-efficiency online detection device for a composite insulator shed, which comprises two magnet modules and two bases, wherein one magnet module is provided with a radio frequency coil and a tuning matching circuit connected with the radio frequency coil; the outer edge of the base is provided with an annular sliding groove, and the magnet module can be in sliding fit with the base through the annular sliding groove and can do circular motion relative to the clamping hole. The magnet module is supported by the base and can slide along the circumferential direction of the base, so that the purpose of quickly measuring the circumference of the umbrella skirt is achieved, and the detection efficiency is high.
Description
Technical Field
The invention relates to the field of power equipment detection tools, in particular to an omnibearing efficient online detection device for a composite insulator umbrella skirt.
Background
The composite insulator has the advantages of light weight, high mechanical strength, difficult breakage and good pollution resistance, and can be widely applied to high-voltage transmission lines. The composite insulator shed is the outer insulation of the composite insulator and is used for protecting the core rod from being corroded by the atmosphere, providing a necessary creepage distance and improving the pollution resistance. The quality of the composite insulator shed plays a crucial role in power transmission in the process of net hanging operation, so that the detection significance of the composite insulator shed material is great, and the existing online detection method of the composite insulator shed material mainly comprises a direct observation method, an ultraviolet imaging method, an infrared imaging method, a hydrophobicity detection method, a nuclear magnetic resonance method and the like.
The nuclear magnetic resonance method is a new detection method and is widely popularized due to accurate detection, but although the existing nuclear magnetic resonance device is convenient to carry, the circumferential detection of the whole composite insulator umbrella skirt is difficult to complete quickly due to the fact that the existing nuclear magnetic resonance device is still lack of detection speed, and the nuclear magnetic resonance method is also lack of operation if used for online detection.
Disclosure of Invention
In order to solve the problems, the invention provides an omnibearing efficient online detection device for a composite insulator shed, which can quickly complete the whole circumferential detection of the composite insulator shed, ensure the detection quality and improve the detection efficiency.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides an all-round high-efficient on-line measuring device of composite insulator full skirt, its key lies in: the magnetic field coupling device comprises two magnet modules and two bases, wherein one magnet module is provided with a radio frequency coil and a tuning matching circuit connected with the radio frequency coil, the tuning matching circuit is connected with a transmission cable, the bases are disc-shaped, the middle parts of the bases are provided with clamping holes which are concentrically arranged, each base comprises two semicircular parts, and the two semicircular parts are provided with mutually matched embedded structures;
the outer edge of the base is provided with an annular sliding groove, and the magnet module can be in sliding fit with the base through the annular sliding groove and can do circular motion relative to the clamping hole.
By adopting the structure, when the insulator shed detection device is used, the base is clamped on the mandrils on the upper side and the lower side of the corresponding shed respectively, and through the disc-shaped base and the circumferential rotation of the magnet modules, the insulator shed can be quickly detected, and the detection efficiency is improved.
Preferably, the method comprises the following steps: the outer edge of the base is provided with two annular sliding grooves which are concentrically arranged, and the magnet module is provided with sliding blocks which are respectively matched with the two annular sliding grooves. By adopting the scheme, the stability of the magnet module in rotation can be ensured.
Preferably, the method comprises the following steps: annular sliding grooves are formed in the upper side and the lower side of the base. By adopting the structure, the distance between the two magnet modules is reduced, and the accuracy of the detection structure is favorably ensured.
Preferably, the method comprises the following steps: the clamping structure comprises jacks and bolts which are matched with each other, and the jacks and the bolts are distributed on the end faces of the two semicircular parts, which are opposite to each other, in a staggered manner. By adopting the structure, the insulator core rod is convenient to fast fixedly sleeve on the insulator core rod, and is convenient to fast remove in the later period.
Preferably, the method comprises the following steps: the magnet module comprises a base, an installation cavity with an open side is formed in the base, iron sheets and permanent magnet sheets are sequentially placed in the installation cavity along the direction close to the opening of the installation cavity, and a cover plate is arranged at the open position of the installation cavity. By adopting the scheme, the whole volume of the module is reduced, the carrying is convenient, and the later maintenance and replacement are realized.
Preferably, the method comprises the following steps: one of the magnet modules is provided with a radio frequency coil and a tuning matching circuit connected with the radio frequency coil, the radio frequency coil is positioned on one side of the cover plate, and the tuning matching circuit is positioned on one side of the base. By adopting the scheme, the detection result precision is improved.
Preferably, the method comprises the following steps: the magnetic chuck is characterized by further comprising a chuck claw, wherein the chuck claw comprises a U-shaped support, two ends of the U-shaped support are provided with chucks arranged along the length direction of the U-shaped support, and the chuck claw is used for simultaneously connecting the two magnet modules to enable the two magnet modules to synchronously rotate. Scheme more than adopting adsorbs respectively on two magnet modules through the sucking disc, only promotes the U-shaped support like this and can make two magnet modules rotate in step from top to bottom, ensures the two coaxial all the time to improve the detection quality precision.
Compared with the prior art, the invention has the beneficial effects that:
by adopting the omnibearing efficient online detection device for the umbrella skirt of the composite insulator, which is provided by the invention, the magnet module is supported by the base and can slide along the circumferential direction of the base, so that the purpose of quickly measuring one circle of the umbrella skirt is achieved, and the detection efficiency is high.
Drawings
FIG. 1 is a schematic structural diagram of a detection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a base structure according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a semicircular portion in an embodiment of the present invention;
FIG. 4 is a schematic diagram of a magnet module according to an embodiment of the present invention;
fig. 5 is a schematic view of an rf coil mounting structure according to an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
Referring to fig. 1 to 5, the omnibearing high-efficiency online detection device for the shed of the composite insulator mainly comprises two bases 2 and two magnet modules 1, as shown in the drawings, in this embodiment, the base 2 is substantially in a disk-shaped structure, the middle part of the base 2 has a fastening hole 20 penetrating through the upper part and the lower part, the thickness of the middle part of the base 2 is greater than the thickness of the outer edge thereof, and the base is formed by fastening two semicircular parts 21, that is, the end surface of one semicircular part 21 has a pin 12 extending perpendicularly outwards, and the other semicircular part 21 has a jack 11 matching with the pin 12, and the two semicircular parts are distributed in a staggered manner, so that the base 2 can be quickly fastened and fixed on a core rod of the insulator (the drawings only show the structure of one semicircular part 21, the other is similar to the structure, except that the pin 12 and the jack 11 are arranged in a complementary structure), it is conceivable to provide a rubber cushion layer on the hole wall of the engaging hole 20, so that the reliability of fixing the base 2 can be further improved, and damage to the core rod of the insulator can be avoided.
Both sides all are equipped with cross-section annular spout 22 about the outer fringe of base 2, and annular spout 22 and the coaxial setting of block hole 20 have on the magnet module 1 with annular spout 22 complex slider 10, and slider 10 is circular in this embodiment to can take place the rotation relative to magnet module 1, magnet module 1 passes through slider 10 and 2 sliding fit of base, and can slide along its circumference, thereby accomplish the detection of full skirt a week.
The magnet module 1 in this embodiment mainly includes a base 13, an iron sheet 14 and a permanent magnet sheet 15, the base 13 is a square block structure, the base 13 is provided with an installation cavity 130 with an open side, the installation cavity 130 is cylindrical, the iron sheet 14 and the permanent magnet sheet 15 are sequentially arranged in the installation cavity 130 in parallel, wherein the permanent magnet sheet 15 is relatively closer to the open position of the installation cavity 130, the base 13 is configured with a cover plate 16 adapted to the base 13, the cover plate 16 is used for closing the installation cavity 130, the base 13 and the base 13 are fixedly connected through screws, the base 13 and the cover plate 16 are made of aluminum materials, and the magnet module 1 with the structure is used for generating a static magnetic field.
The sliding block 10 is located at one side of the base 13 and is fixedly connected with the base, the sliding block 10 is provided with a roller 100 which is matched with the annular sliding groove 22, and the roller 100 can rotate relative to the sliding block 10 and can do circular motion along the annular sliding groove 22.
In order to realize the rapid induction detection of the object to be detected, a radio frequency coil 3 and a tuning matching circuit 4 connected with the radio frequency coil 3 are further arranged on one magnet module 1, as shown in the figure, the radio frequency coil 3 is positioned on the outer side of a cover plate 16, the radio frequency coil 3 adopts a planar spiral coil, the tuning matching circuit 4 is positioned on the outer side of a base 13, an excitation radio frequency magnetic field can be generated through the matching of the radio frequency coil 3 and the magnet module 1, and an echo signal generated by the object to be detected is detected through the tuning matching circuit 4.
Referring to fig. 1 to 5, the installation and use process of the present invention is as follows:
in an initial state, two magnet modules 1 (one of which is provided with a radio frequency coil 3 and a tuning matching circuit 4) and two bases 2 are all separated and are firstly used for quality detection of an insulator 5, as shown in fig. 1, the two bases 2 are respectively clamped and fixed with the upper side and the lower side of the same umbrella skirt 50, flexible materials such as anti-friction pads and the like can be added on the inner sides of clamping holes 20 to ensure the stability of the bases 2, and simultaneously, a core rod 51 cannot be damaged, in the clamping process of a single base 2, two ends of a semicircular part 21 corresponding to an annular sliding groove 22 are of an open structure, namely, the magnet modules 1 are arranged in the semicircular part 21 at the moment, after the other half of the circular part 21 is clamped with the circular part, the annular sliding groove 22 forms a closed sliding groove, as shown in the figure, the magnet module 1 at the lower side is matched with the annular sliding groove 22 at the upper side of the corresponding base 2, while the magnet module 1 at the upper side is matched with the annular sliding groove 22 at the lower side of the corresponding base 2, therefore, the gap between the two can be greatly reduced, the selection time in the installation process is reduced, the vertical use is realized, and the device has better adaptability.
During installation, it is noted that the magnet module 1 with the rf coil 3 is required to face the cover plate 16 of another magnet module 1, and the two are basically coaxially arranged, and then the tuning matching circuit 4 is connected to a spectrometer through the transmission cable 40 for measurement, during the measurement, the upper and lower magnet modules 1 are synchronously rotated, in order to improve the feasibility of synchronous rotation, in this embodiment, a suction cup claw 6 with a generally U-shaped cross section is provided, the suction cup claw 6 is made of plastic with certain hardness, and mainly comprises a U-shaped bracket and suction cups 60 arranged at two ends of the U-shaped bracket, when in use, the suction cups 60 at two ends of the suction cup claw 6 are respectively adsorbed at the outer end parts of the two magnet modules 1, so as to push the suction cup claw 6, and thus the synchronous movement of the two magnet modules 1 can be realized, thereby rapidly measuring the aging condition of the corresponding umbrella skirt 50, and in addition, the U-shaped bracket can be designed to be telescopic according to requirements, and mainly can be telescopic in the length direction so as to adapt to umbrella skirts 50 with different thicknesses, and meanwhile, the side end connected with the suction disc 60 can also be telescopic so as to adapt to the umbrella skirts 50 with different radiuses.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides an all-round high-efficient on-line measuring device of composite insulator full skirt which characterized in that: the magnetic field coupling device comprises two magnet modules (1) and two bases (2), wherein one magnet module (1) is provided with a radio frequency coil (3) and a tuning matching circuit (4) connected with the radio frequency coil, the tuning matching circuit (4) is connected with a transmission cable (40), the bases (2) are disc-shaped, clamping holes (20) concentrically arranged in the middle of the bases are formed in the middle of the bases, each base (2) comprises two semicircular parts (21), and the two semicircular parts (21) are provided with mutually matched embedding structures;
the outer edge of the base (2) is provided with an annular sliding groove (22), and the magnet module (1) can be in sliding fit with the base (2) through the annular sliding groove (22) and can do circular motion relative to the clamping hole (20);
the magnetic module is characterized by further comprising a sucker claw (6), wherein the sucker claw (6) comprises a U-shaped support, suckers (60) arranged along the length direction of the U-shaped support are arranged at two ends of the U-shaped support, and the sucker claw (6) is used for being connected with the two magnet modules (1) simultaneously to enable the two magnet modules to rotate synchronously.
2. The omnibearing efficient online detection device for the umbrella skirt of the composite insulator according to claim 1, characterized in that: the outer edge of the base (2) is provided with two annular sliding grooves (22) which are concentrically arranged, and the magnet module (1) is provided with sliding blocks (10) which are respectively matched with the two annular sliding grooves (22).
3. The omnibearing efficient online detection device for the umbrella skirt of the composite insulator according to claim 1 or 2, characterized in that: annular sliding grooves (22) are formed in the upper side and the lower side of the base (2).
4. The omnibearing efficient online detection device for the umbrella skirt of the composite insulator according to claim 1, characterized in that: the clamping structure comprises a jack (11) and a plug pin (12) which are matched with each other, and the jack (11) and the plug pin (12) are distributed on the mutually opposite end faces of the two semicircular parts (21) in a staggered manner.
5. The omnibearing efficient online detection device for the umbrella skirt of the composite insulator according to claim 1, characterized in that: magnet module (1) includes base (13), open installation cavity (130) in one side have on base (13), iron sheet (14) and permanent magnet piece (15) have been placed along being close to its open direction in proper order in installation cavity (130), and installation cavity (130) opening department disposes apron (16).
6. The omnibearing efficient online detection device for the umbrella skirt of the composite insulator according to claim 4, wherein: and one magnet module (1) is provided with a radio frequency coil (3) and a tuning matching circuit (4) connected with the radio frequency coil, the radio frequency coil (3) is positioned on one side of the cover plate (16), and the tuning matching circuit (4) is positioned on one side of the base (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910230407.6A CN110133033B (en) | 2019-03-26 | 2019-03-26 | Omnibearing efficient online detection device for composite insulator umbrella skirt |
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| CN201910230407.6A CN110133033B (en) | 2019-03-26 | 2019-03-26 | Omnibearing efficient online detection device for composite insulator umbrella skirt |
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| CN110133033A CN110133033A (en) | 2019-08-16 |
| CN110133033B true CN110133033B (en) | 2022-06-24 |
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| CN111929340A (en) * | 2020-06-23 | 2020-11-13 | 贵州电网有限责任公司 | Composite insulating material NMR formula nondestructive test device convenient to use |
| CN113270237B (en) * | 2021-05-18 | 2022-10-28 | 萍乡市中源瓷业有限公司 | High-strength column type electric porcelain insulator |
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| US6177798B1 (en) * | 1999-07-27 | 2001-01-23 | Varian, Inc. | Flow-through NMR probe having a replaceable NMR flow tube |
| WO2016082805A1 (en) * | 2014-11-28 | 2016-06-02 | 国家电网公司 | Insulator cleaning robot |
| CN204359718U (en) * | 2014-12-12 | 2015-05-27 | 广东电网有限责任公司东莞供电局 | A kind of clamp of sensor measured for composite insulator ageing state |
| CN205665360U (en) * | 2016-05-31 | 2016-10-26 | 中国南方电网有限责任公司电网技术研究中心 | Filthy monitoring devices of insulator |
| CN106391373B (en) * | 2016-10-18 | 2018-09-28 | 国网山东省电力公司电力科学研究院 | A kind of insulator on-line spray control system and robot |
| CN106269658B (en) * | 2016-10-18 | 2020-02-14 | 国网山东省电力公司电力科学研究院 | Device, control system and robot for insulator |
| CN106841264B (en) * | 2016-12-20 | 2018-08-28 | 国网重庆市电力公司电力科学研究院 | A kind of nmr sensor for detecting composite insulator umbrella skirt |
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Non-Patent Citations (1)
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| 弧形核磁共振传感器设计及其在复合绝缘子老化状态检测中的应用;刘社民等;《波谱学杂志》;20170615(第02期);全文 * |
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