CN208125649U - A kind of nmr sensor for composite insulator umbrella skirt aging non-destructive testing - Google Patents
A kind of nmr sensor for composite insulator umbrella skirt aging non-destructive testing Download PDFInfo
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- CN208125649U CN208125649U CN201820725460.4U CN201820725460U CN208125649U CN 208125649 U CN208125649 U CN 208125649U CN 201820725460 U CN201820725460 U CN 201820725460U CN 208125649 U CN208125649 U CN 208125649U
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Abstract
The utility model discloses a kind of nmr sensors for composite insulator umbrella skirt aging non-destructive testing, a pair of of magnet structure including the face setting for clamping sample, for adjusting the roll-setting gear of the spacing between the pair of magnet structure, the roll-setting gear includes a pair of support arms being oppositely arranged, rack-and-pinion distance adjustor, driving handle, the pair of support arm is fixedly connected with the pair of magnet structure, the rack-and-pinion distance adjustor is separately connected with the pair of support arm and the driving handle, for driving the pair of support arm close to each other under the drive of driving handle or being located remotely from each other.Only need rotate driving handle that rack-and-pinion distance adjustor can be driven to drive a pair of support arms close to each other or be located remotely from each other based on the utility model user, when use is very convenient.
Description
Technical field
The utility model relates to electrical network field more particularly to a kind of cores for composite insulator umbrella skirt aging non-destructive testing
Magnetic resonance sensors.
Background technique
Composite insulator is since its is light-weight, and high mechanical strength is non-breakable, and the good excellent performance of anti-pollution characteristic is answered extensively
For in ultra-high-tension power transmission line.Composite insulator umbrella skirt is the external insulation of composite insulator, for protecting plug not by atmosphere
It corrodes, necessary creepage distance is provided, improve anti-pollution characteristic.During hanging net operation, composite insulator umbrella skirt is bearing electricity
It will appear aging or breakdown problem under the erosion of net overvoltage and natural environment, potential threat constituted to power supply reliability, so
The online non-destructive testing of composite insulator umbrella skirt material is significant.Composite insulator umbrella skirt material online test method is main at present
There are direct observational method, ultraviolet image method, infrared imaging method, hydrophobicity detection method etc..
Method of direct observation is observed with binoculars under tower to find that whether there is or not crackings, galvanic corrosion damage, powder on full skirt surface
The defects of change, tracking.But ground observation is less reliable, also needs to step on tower detection.
Ultraviolet image method, using electronics ultraviolet optics defectoscope live detection composite insulator umbrella skirt surface since part is put
Electricity and the carbonization channel formed and galvanic corrosion damage, principle is：Charged particle is compound during shelf depreciation can release ultraviolet light, when
When insulator umbrella surface forms conductivity silicon carbide channel, shelf depreciation aggravation.But this method required at night, normal temperature ring
It is operated under border, shelf depreciation is occurring when requiring in addition that detection, this requires to detect the environment that should even have rainfall in high humility
Middle progress, this just increases the difficulty and risk of operation.
Infrared imaging method detects shelf depreciation by insulator local temperature raising imaging, leakage current flows through insulant
Dielectric loss or resistance loss when matter etc..But this method instrument cost is high and measurement is vulnerable to sunlight, strong wind, moisture, environment temperature
Degree and some influences that can cause insulator surface temperature change dramatically factor.
Hydrophobicity detection method, i.e. water spray staging.The hydrophobicity on composite insulator umbrella skirt surface is divided into 7 grades simultaneously by this method
Grading criteria and normal pictures are provided, HC-1 grades and HC-7 grades respectively correspond most strong and worst (i.e. total hydrophilic) the shape of hydrophobicity
State.In test, water mist, distribution situation of the observation moisture on test product surface, comparison classification are sprayed to test product surface with common watering can
Criterion and normal pictures obtain the hydrophobicity situation of insulator surface.In recent years, digital photographing technique and computer digital image
The development of processing technique for more objective and accurately evaluating combined insulator surface the hydrophobicity of people provide one it is new
Road.But the research only rests on laboratory stage, lacks the analysis to complex surface under complex situations；Although online to scene
Feasibility prediction has been done in test, but is not put into practice.
All there is the deficiency of itself in above-mentioned composite insulator umbrella skirt aging online test method, therefore, it is proposed that
From materialogy angle, composite insulator umbrella skirt aging non-destructive testing is realized using nuclear magnetic resonance technique, and is designed for this
The open nuclear magnetic resonance sensor of purpose.
Nuclear magnetic resonance technique is widely used in life medical treatment, food analysis, quality control as a kind of nondestructiving detecting means
System, materials science field and geophysics field etc..Nuclear magnetic resonance technique utilizes the magnetic resonance characteristics of H atom core, obtains H core
Magnetic resonance spectrum (MRS), and according to some features of MRS, understand such as the width of spectral line, shape and area nuclear property and
Locating environment, to determine molecular structure.
Composite insulator umbrella skirt aging non-destructive testing principle based on nuclear magnetic resonance is：The full skirt of composite insulator mainly at
It is divided into dimethyl silicone polymer, using duplicate Si-O key as main chain in molecule, methyl, vinyl etc. has been directly connected on Si atom
Polymer.Under long-term rugged environment, the bond energy of Si-O key can weaken composite insulator umbrella skirt material, or even fracture, so that
The variation of H atom quantity and state in molecular formula detects the change of amount containing H and state in insulator cluster parachute by nuclear magnetic resonance technique
Change, corresponding inverting peak area and lateral relaxation time variation, to measure the degree of aging of full skirt.
But existing open nuclear magnetic resonance sensor adjust between magnet structure therein apart from when, use
Sliding part and fixing piece cooperation, sliding part and fixing piece fixed again by screw after adjusting distance.To full skirt
When carrying out batch detection, need frequently to unlock screw, and the distance of frequent adjustment sliding part and fixing piece, therefore this
Nmr sensor is very inconvenient in practical application.
Utility model content
The technical problem to be solved by the present invention is in view of the above drawbacks of the prior art, provide a kind of for multiple
Close the nmr sensor of insulator umbrella aging non-destructive testing.
Technical solution adopted by the utility model to solve its technical problems is：It constructs a kind of for composite insulator umbrella skirt
The nmr sensor of aging non-destructive testing, a pair of of magnet structure including the face setting for clamping sample,
It further include the roll-setting gear for adjusting the spacing between the pair of magnet structure, the roll-setting gear includes being oppositely arranged
A pair of support arms, rack-and-pinion distance adjustor, driving handle, the pair of support arm fixes with the pair of magnet structure
Connection, the rack-and-pinion distance adjustor is separately connected with the pair of support arm and the driving handle, for driving
It drives the pair of support arm close to each other under the drive of handle or is located remotely from each other.
In the nmr sensor described in the utility model for composite insulator umbrella skirt aging non-destructive testing, institute
Stating rack-and-pinion distance adjustor includes the first rack gear, the second rack gear and gear, and the pair of support arm is corresponding and institute
State the first rack gear, the second rack gear is fixedly connected, first rack gear, the second rack gear are distributed in two opposite sides of the gear and simultaneously
It is connect with the gear drive, the driving handle is fixedly and coaxially connected with the gear, and the driving handle is used for by outer
Power drives the gear to rotate when rotating, and then first rack gear, the second rack gear is driven to do towards or away from movement.
In the nmr sensor described in the utility model for composite insulator umbrella skirt aging non-destructive testing, institute
The first rack gear, the second rack gear and gear is stated to be arranged in the same level vertical with the pair of magnet structure.
In the nmr sensor described in the utility model for composite insulator umbrella skirt aging non-destructive testing, institute
Stating roll-setting gear further includes shell, and the pair of support arm is respectively arranged on two opposite sides of the shell and is slidably connected in described
Shell, for each support arm to far from extending to side support arm direction, each magnet structure is fixedly connected on correspondence
The support arm on, and the magnet structure is vertically arranged with the support arm.
In the nmr sensor described in the utility model for composite insulator umbrella skirt aging non-destructive testing, institute
The a pair of sidewalls for stating shell has opened up the first mounting groove respectively, and the roof or bottom wall of the shell offer the second mounting groove,
The support arm passes through corresponding one first mounting groove, and the driving handle passes through second mounting groove.
In the nmr sensor described in the utility model for composite insulator umbrella skirt aging non-destructive testing, institute
Stating magnet structure includes aluminum trays, iron plate, permanent magnet piece and the thin cover board of aluminum；The aluminum trays offer and iron plate phase
The cavity of cooperation, the iron plate and permanent magnet piece are sequentially placed the cavity inside in aluminum trays, the thin cover board covering of aluminum
In on the cavity of aluminum trays.
In the nmr sensor described in the utility model for composite insulator umbrella skirt aging non-destructive testing, institute
Iron plate is stated as cylindrical iron plate, the permanent magnet piece is cylindrical rubidium iron boron permanent magnet piece.
In the nmr sensor described in the utility model for composite insulator umbrella skirt aging non-destructive testing,
In a magnet structure close to the side of another magnet structure be fixedly installed a pcb board, etched on the pcb board
There are planar radio frequency coils.The planar radio frequency coils include concatenated two spiral windings in the same plane, described two spiral shells
The RF magnetic field that spin line circle is formed is parallel with plane where planar radio frequency coils in planar radio frequency coils upper center region, described
The RF magnetic field that two spiral windings are formed is contrary.
Implement the utility model the nmr sensor for composite insulator umbrella skirt aging non-destructive testing, with
Lower beneficial effect：The utility model adjusts the spacing between a pair of of magnet structure, a pair of of support therein by roll-setting gear
Arm is fixedly connected with the pair of magnet structure, rack-and-pinion distance adjustor respectively with a pair of support arms and the driving handle
Be separately connected, user only need rotate driving handle can drive rack-and-pinion distance adjustor drive a pair of support arms close to each other or
Person is located remotely from each other, and when use is very convenient.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer：
Fig. 1 is the structural schematic diagram of the utility model nmr sensor；
Fig. 2 is the structural schematic diagram of roll-setting gear；
Fig. 3 is the structural schematic diagram of magnet structure.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The exemplary embodiments of the utility model are given in attached drawing.But the utility model can come in many different forms in fact
It is existing, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes public affairs to the utility model
It is more thorough and comprehensive to open content.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", "horizontal", "left", "right"
And similar statement is for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.
" first ", " second " used in this specification etc. includes that the term of ordinal number can be used for illustrating various constituent elements,
But these constituent elements are not limited by these terms.It is only that using the purpose of these terms and distinguishes a constituent element
In other constituent elements.For example, first constituent element can be named as under the premise of not departing from interest field of the invention
Two constituent elements, similarly, the second constituent element can also be named as the first constituent element.
With reference to Fig. 1, the total thinking of the utility model be construct it is a kind of for composite insulator umbrella skirt aging non-destructive testing
Nmr sensor, a pair of of magnet structure 1 and 2 including the face setting for clamping sample, further includes being used for
The roll-setting gear 3 of the spacing between the pair of magnet structure 1 and 2 is adjusted, the roll-setting gear 3 includes one be oppositely arranged
To support arm 31 and 32, rack-and-pinion distance adjustor, driving handle 37, the pair of support arm 31,32 and the pair of permanent magnetism
Body structure 1,2 is fixedly connected, the rack-and-pinion distance adjustor respectively with the pair of support arm 31,32 and the driving handle
37 are separately connected, for driving the pair of support arm 31,32 close to each other under the drive of driving handle 37 or mutually far
From.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
It states technical solution to be described in detail, it should be understood that the specific features in the utility model embodiment and embodiment are to this
The detailed description of application technical solution, rather than the restriction to technical scheme, in the absence of conflict, this is practical
Technical characteristic in new embodiment and embodiment can be combined with each other.
In conjunction with Fig. 1, with reference to Fig. 2, the nmr sensor that preferred embodiment provides includes for clamping sample
A pair of of the magnet structure 1,2 and the roll-setting gear for adjusting the spacing between the pair of magnet structure of face setting
3。
Wherein, the roll-setting gear 3 includes shell 36, a pair of support arms 31 being oppositely arranged, 32, rack-and-pinion roll adjustment machine
Structure, driving handle 37.Support arm 31,32 is slidably connected in the shell 36, and the pair of support arm 31,32 is respectively arranged on institute
State two opposite sides of shell 36, such as the left and right sides.The support arm 31,32 is respectively to far to 32/31 direction of side support arm
Extend, each magnet structure 1,2 is fixedly connected on the corresponding support arm 31,32, and the magnet structure
1, it 2 is vertically arranged respectively with corresponding support arm 31,32.
Specifically, the left and right sidewall of the shell 36 has opened up the first mounting groove respectively, the roof of the shell 36 or
Bottom wall offers the second mounting groove, and the support arm 31,32 passes through corresponding one first mounting groove, the driving handle
37 pass through second mounting groove.
Wherein, rack-and-pinion distance adjustor be arranged inside shell 36, rack-and-pinion distance adjustor respectively with it is the pair of
Support arm 31,32 and the driving handle 37 are separately connected, for driving the pair of support under the drive of driving handle 37
Arm 31,32 is close to each other or is located remotely from each other.
Specifically, the rack-and-pinion distance adjustor includes gear 35 and horizontally disposed first rack gear 33 and the second tooth
Item 34, the pair of support arm 31,32 is corresponding to be fixedly connected with first rack gear 33, the second rack gear 34, the first tooth
Item 33, the second rack gear 34 are distributed in two opposite sides of the gear 35 and are sequentially connected simultaneously with the gear 35, the driving hand
One end that handle 37 protrudes into inside shell 36 is fixedly and coaxially connected with the gear 35, and the driving handle 37 is used to turn by external force
It drives the gear 35 to rotate when dynamic, and then first rack gear 33, the second rack gear 34 is driven to do towards or away from movement.
In the present embodiment, the first rack gear 33, the second rack gear 34 and gear 35 setting with the pair of magnet structure
1, in 2 vertical same levels.Namely first rack gear 33, the second rack gear 34 are distributed in the front and back side of the gear 35, such as Fig. 2
Shown, Fig. 2 is the schematic diagram under the depression angle after opening shell 36.It is understood that the first rack gear 33, the second rack gear 34
And gear 35 can also be arranged in the same vertical plane parallel with the pair of magnet structure 1,2 namely the first rack gear
33, the second rack gear 34 is distributed in the upper and lower sides of the gear 35.
It is understood that thickness range can obtain in advance because sample is full skirt.Therefore only
The length of the first rack gear 33, the second rack gear 34 need to be set, guarantees the first rack gear 33, the minimum distance of the second rack gear 34 is less than institute
There is the thickness of sample.
With reference to Fig. 3, the magnet structure 1,2 includes aluminum trays 101, iron plate 102, permanent magnet piece 103 and aluminum
Thin cover board 104；The aluminum trays 101 offer the cavity matched with iron plate 102, the iron plate 102 and permanent magnet piece 103
It is sequentially placed in the cavity inside of aluminum trays 101, the thin cover board 104 of aluminum is covered on the cavity of aluminum trays 101.
Specifically, the iron plate 102 is cylindrical iron plate, the permanent magnet piece 103 is cylindrical rubidium iron boron permanent magnet piece.
One of magnet structure 1/2 is fixedly installed a pcb board, the PCB close to the side of another magnet structure 2/1
Planar radio frequency coils are etched on plate.The planar radio frequency coils include concatenated two spiral windings in the same plane, institute
The RF magnetic field of two spiral windings formation is stated in plane where planar radio frequency coils upper center region and planar radio frequency coils
In parallel, the RF magnetic field that described two spiral windings are formed is contrary.The magnet structure 1,2 is for generating static-magnetic
, planar radio frequency coils detect the sample institute being set between magnet structure 1,2 for generating excitation RF magnetic field
The echo-signal of generation.
The working principle of the present embodiment is：It is inverted firstly, rotating backward driving handle 37 with band moving gear 35, the first rack gear
33, the second rack gear 34 is away from each other movement, is located remotely from each other so as to cause support arm 31,32, and it is mutual also to allow for magnet structure 1,2
It is separate；Sample is put between magnet structure 1,2 again, then rotate forward again driving handle 37 with band moving gear 35 just
Turning, the first rack gear 33, the second rack gear 34 move toward one another, and it is close to each other so as to cause support arm 31,32, also allow for permanent magnet knot
Structure 1,2 is close to each other, if magnet structure 1,2 with sample close to contacting, driving handle 37 can not be continued to rotate,
It can stop operating at this time and start to measure.
It is understood that is, will if the first rack gear 33, the second rack gear 34 are interchangeable in 35 position of engagement of gear
First rack gear 33 changes to rear side from the front side of gear 35, and the second rack gear 34 is changed to front side from the rear side of gear 35, then drives hand
The movement tendency of support arm 31,32 caused by the rotation direction of handle 37 will also exchange.
In conclusion the nuclear magnetic resonance for composite insulator umbrella skirt aging non-destructive testing for implementing the utility model senses
Device has the advantages that：The utility model adjusts the spacing between a pair of of magnet structure by roll-setting gear, therein
A pair of support arms is fixedly connected with the pair of magnet structure, rack-and-pinion distance adjustor respectively with a pair of support arms and described
Driving handle is separately connected, and user only needs rotate driving handle that rack-and-pinion distance adjustor can be driven to drive a pair of support arms phase
Mutually close or be located remotely from each other, when use, is very convenient.
The embodiments of the present invention are described above in conjunction with attached drawing, but the utility model is not limited to
The specific embodiment stated, the above mentioned embodiment is only schematical, rather than restrictive, this field it is common
Technical staff is not departing from the utility model aims and scope of the claimed protection situation under the enlightenment of the utility model
Under, many forms can be also made, these are belonged within the protection of the utility model.
Claims (9)
1. a kind of nmr sensor for composite insulator umbrella skirt aging non-destructive testing, including for clamping sample
Face setting a pair of of magnet structure, which is characterized in that further include for adjusting between the pair of magnet structure
The roll-setting gear of spacing, the roll-setting gear include a pair of support arms being oppositely arranged, rack-and-pinion distance adjustor, driving hand
Handle, the pair of support arm are fixedly connected with the pair of magnet structure, the rack-and-pinion distance adjustor with it is the pair of
Support arm and the driving handle are separately connected, for driving the pair of support arm mutually to lean under the drive of driving handle
Closely or it is located remotely from each other.
2. the nmr sensor according to claim 1 for composite insulator umbrella skirt aging non-destructive testing, special
Sign is that the rack-and-pinion distance adjustor includes the first rack gear, the second rack gear and gear, and the pair of support arm is right respectively
That answers is fixedly connected with first rack gear, the second rack gear, and first rack gear, the second rack gear are distributed in two pairs of the gear
It side and is connect simultaneously with the gear drive, the driving handle is fixedly and coaxially connected with the gear, and the driving handle is used
In driving the gear to rotate when being rotated by external force, and then first rack gear, the second rack gear is driven to do towards or away from fortune
It is dynamic.
3. the nmr sensor according to claim 2 for composite insulator umbrella skirt aging non-destructive testing, special
Sign is that the same level vertical with the pair of magnet structure is arranged in first rack gear, the second rack gear and gear
In face.
4. the nmr sensor according to claim 1 for composite insulator umbrella skirt aging non-destructive testing, special
Sign is that the roll-setting gear further includes shell, and the pair of support arm is respectively arranged on two opposite sides of the shell and sliding
It is connected in the shell, each support arm to far from extending to side support arm direction, fix by each magnet structure
It is connected on the corresponding support arm, and the magnet structure is vertically arranged with the support arm.
5. the nmr sensor according to claim 4 for composite insulator umbrella skirt aging non-destructive testing, special
Sign is that a pair of sidewalls of the shell has opened up the first mounting groove respectively, and the roof or bottom wall of the shell offer
Two mounting grooves, the support arm pass through corresponding one first mounting groove, and the driving handle passes through second installation
Slot.
6. the nmr sensor according to claim 1 for composite insulator umbrella skirt aging non-destructive testing, special
Sign is that the magnet structure includes aluminum trays, iron plate, permanent magnet piece and the thin cover board of aluminum；The aluminum trays open up
There is the cavity matched with iron plate, the iron plate and permanent magnet piece are sequentially placed the cavity inside in aluminum trays, the aluminum
Thin cover board is covered on the cavity of aluminum trays.
7. the nmr sensor according to claim 6 for composite insulator umbrella skirt aging non-destructive testing, special
Sign is that the iron plate is cylindrical iron plate, and the permanent magnet piece is cylindrical rubidium iron boron permanent magnet piece.
8. the nmr sensor according to claim 6 for composite insulator umbrella skirt aging non-destructive testing, special
Sign is that one of magnet structure is fixedly installed a pcb board close to the side of another magnet structure, described
Planar radio frequency coils are etched on pcb board.
9. the nmr sensor according to claim 8 for composite insulator umbrella skirt aging non-destructive testing, special
Sign is that the planar radio frequency coils include concatenated two spiral windings in the same plane, described two spiral winding shapes
At RF magnetic field in planar radio frequency coils upper center region, described two spirals parallel with plane where planar radio frequency coils
The RF magnetic field that coil is formed is contrary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820725460.4U CN208125649U (en) | 2018-05-16 | 2018-05-16 | A kind of nmr sensor for composite insulator umbrella skirt aging non-destructive testing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820725460.4U CN208125649U (en) | 2018-05-16 | 2018-05-16 | A kind of nmr sensor for composite insulator umbrella skirt aging non-destructive testing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412065A (en) * | 2019-06-19 | 2019-11-05 | 广西电网有限责任公司电力科学研究院 | A kind of nmr sensor for composite insulator ageing management |
| CN112034107A (en) * | 2020-09-10 | 2020-12-04 | 刘莲莲 | Novel antibiotic detects device |
| CN113932355A (en) * | 2021-10-21 | 2022-01-14 | 深圳市中亿远环保科技有限责任公司 | Air-flowing type indoor ultraviolet air sterilizing lamp |
-
2018
- 2018-05-16 CN CN201820725460.4U patent/CN208125649U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412065A (en) * | 2019-06-19 | 2019-11-05 | 广西电网有限责任公司电力科学研究院 | A kind of nmr sensor for composite insulator ageing management |
| CN110412065B (en) * | 2019-06-19 | 2021-06-22 | 广西电网有限责任公司电力科学研究院 | Nuclear magnetic resonance sensor for composite insulator aging detection |
| CN112034107A (en) * | 2020-09-10 | 2020-12-04 | 刘莲莲 | Novel antibiotic detects device |
| CN113932355A (en) * | 2021-10-21 | 2022-01-14 | 深圳市中亿远环保科技有限责任公司 | Air-flowing type indoor ultraviolet air sterilizing lamp |
| CN113932355B (en) * | 2021-10-21 | 2022-12-23 | 深圳市中亿远环保科技有限责任公司 | Air-flowing type indoor ultraviolet air sterilizing lamp |
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