CN110133033B - Omnibearing efficient online detection device for composite insulator umbrella skirt - Google Patents

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

Omnibearing efficient online detection device for umbrella skirt of composite insulator

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 twobases 2 and twomagnet modules 1, as shown in the drawings, in this embodiment, thebase 2 is substantially in a disk-shaped structure, the middle part of thebase 2 has afastening hole 20 penetrating through the upper part and the lower part, the thickness of the middle part of thebase 2 is greater than the thickness of the outer edge thereof, and the base is formed by fastening twosemicircular parts 21, that is, the end surface of onesemicircular part 21 has apin 12 extending perpendicularly outwards, and the othersemicircular part 21 has ajack 11 matching with thepin 12, and the two semicircular parts are distributed in a staggered manner, so that thebase 2 can be quickly fastened and fixed on a core rod of the insulator (the drawings only show the structure of onesemicircular part 21, the other is similar to the structure, except that thepin 12 and thejack 11 are arranged in a complementary structure), it is conceivable to provide a rubber cushion layer on the hole wall of theengaging hole 20, so that the reliability of fixing thebase 2 can be further improved, and damage to the core rod of the insulator can be avoided.

Both sides all are equipped with cross-sectionannular spout 22 about the outer fringe ofbase 2, andannular spout 22 and the coaxial setting ofblock hole 20 have on themagnet module 1 withannular spout 22complex slider 10, andslider 10 is circular in this embodiment to can take place the rotation relative tomagnet module 1,magnet module 1 passes throughslider 10 and 2 sliding fit of base, and can slide along its circumference, thereby accomplish the detection of full skirt a week.

Themagnet module 1 in this embodiment mainly includes abase 13, aniron sheet 14 and apermanent magnet sheet 15, thebase 13 is a square block structure, thebase 13 is provided with aninstallation cavity 130 with an open side, theinstallation cavity 130 is cylindrical, theiron sheet 14 and thepermanent magnet sheet 15 are sequentially arranged in theinstallation cavity 130 in parallel, wherein thepermanent magnet sheet 15 is relatively closer to the open position of theinstallation cavity 130, thebase 13 is configured with acover plate 16 adapted to thebase 13, thecover plate 16 is used for closing theinstallation cavity 130, thebase 13 and thebase 13 are fixedly connected through screws, thebase 13 and thecover plate 16 are made of aluminum materials, and themagnet module 1 with the structure is used for generating a static magnetic field.

The slidingblock 10 is located at one side of thebase 13 and is fixedly connected with the base, thesliding block 10 is provided with aroller 100 which is matched with the annularsliding groove 22, and theroller 100 can rotate relative to thesliding block 10 and can do circular motion along the annularsliding groove 22.

In order to realize the rapid induction detection of the object to be detected, aradio frequency coil 3 and a tuning matchingcircuit 4 connected with theradio frequency coil 3 are further arranged on onemagnet module 1, as shown in the figure, theradio frequency coil 3 is positioned on the outer side of acover plate 16, theradio frequency coil 3 adopts a planar spiral coil, thetuning matching circuit 4 is positioned on the outer side of abase 13, an excitation radio frequency magnetic field can be generated through the matching of theradio frequency coil 3 and themagnet module 1, and an echo signal generated by the object to be detected is detected through the tuningmatching 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 aradio frequency coil 3 and a tuning matching circuit 4) and twobases 2 are all separated and are firstly used for quality detection of aninsulator 5, as shown in fig. 1, the twobases 2 are respectively clamped and fixed with the upper side and the lower side of thesame umbrella skirt 50, flexible materials such as anti-friction pads and the like can be added on the inner sides ofclamping holes 20 to ensure the stability of thebases 2, and simultaneously, acore rod 51 cannot be damaged, in the clamping process of asingle base 2, two ends of asemicircular part 21 corresponding to an annularsliding groove 22 are of an open structure, namely, themagnet modules 1 are arranged in thesemicircular part 21 at the moment, after the other half of thecircular part 21 is clamped with the circular part, the annularsliding groove 22 forms a closed sliding groove, as shown in the figure, themagnet module 1 at the lower side is matched with the annularsliding groove 22 at the upper side of thecorresponding base 2, while themagnet module 1 at the upper side is matched with the annularsliding groove 22 at the lower side of thecorresponding 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 themagnet module 1 with therf coil 3 is required to face thecover plate 16 of anothermagnet module 1, and the two are basically coaxially arranged, and then the tuning matchingcircuit 4 is connected to a spectrometer through thetransmission cable 40 for measurement, during the measurement, the upper andlower magnet modules 1 are synchronously rotated, in order to improve the feasibility of synchronous rotation, in this embodiment, asuction cup claw 6 with a generally U-shaped cross section is provided, thesuction 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 thesuction cup claw 6 are respectively adsorbed at the outer end parts of the twomagnet modules 1, so as to push thesuction cup claw 6, and thus the synchronous movement of the twomagnet modules 1 can be realized, thereby rapidly measuring the aging condition of thecorresponding 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 toumbrella 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 theumbrella 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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