CN106501297A - A kind of NMR measuring system for the detection of composite insulator degree of aging - Google Patents
A kind of NMR measuring system for the detection of composite insulator degree of aging Download PDFInfo
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- CN106501297A CN106501297A CN201610907461.6A CN201610907461A CN106501297A CN 106501297 A CN106501297 A CN 106501297A CN 201610907461 A CN201610907461 A CN 201610907461A CN 106501297 A CN106501297 A CN 106501297A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
- G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
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Abstract
A kind of magnetic resonance detection system for composite insulator umbrella skirt aging degree detecting that the present invention is provided, using the degree of aging of nuclear magnetic resonance technique quantitative analysis composite insulator umbrella skirt in terms of microcosmic, improves the degree of accuracy of testing result；Also, the composite insulator umbrella skirt that NMR sensor detection is currently running, can realize that engineering site is detected, improve the operating efficiency of composite insulator umbrella skirt aging degree detecting, and improve power supply reliability.
Description
Technical field
The present invention relates to composite insulator ageing management technical field, more particularly, it relates to a kind of be used for compound inslation
The nucleon resonance measuring system of sub- degree of aging detection.
Background technology
Composite insulator is lightweight due to which, high mechanical strength, not broken, and the good premium properties of anti-pollution characteristic extensively should
In for ultra-high-tension power transmission line.Composite insulator umbrella skirt is the external insulation of composite insulator, for protecting plug not by air
Corrode, there is provided necessary creep age distance, improve anti-pollution characteristic.During hanging net operation, composite insulator umbrella skirt is bearing electricity
Aging or breakdown problem occurs under the erosion of net overvoltage and natural environment, potential threat is constituted to power supply reliability, so
The Clinical significance of detecting of composite insulator umbrella skirt aging degree is great.
The detection method of composite insulator umbrella skirt aging mainly has directly observation, HC water spray stagings, leakage current at present
Method, contact angle method, thermally stimulated current method etc..Wherein, the subjectivity that directly observation is vulnerable to maintainer with HC water spray stagings is sentenced
Disconnected impact, poor reliability；The factor complexity of size of current is affected in Leakage Current method, and randomness is big, as a result also unreliable；Contact
The requirement of horn cupping and thermally stimulated current method to test environment is all very high, the off-line measurement being generally used under laboratory condition, operation
Complicated.
With China's electric pressure continuous improvement and bulk power grid between interconnection, power system proposed to power supply reliability
Higher requirement, in the urgent need to a kind of new method that can carry out online accurately detection to composite insulator umbrella skirt aging degree.
Content of the invention
In view of this, the present invention proposes a kind of NMR measuring system for the detection of composite insulator degree of aging,
It is intended to the purpose for realizing carrying out composite insulator umbrella skirt aging degree online accurately detection.
To achieve these goals, it is proposed that scheme as follows：
A kind of magnetic resonance detection system for composite insulator umbrella skirt aging degree detecting, including：NMR sensor,
Duplexer, H NMR spectroscopy instrument, controller, input unit, output device and power supply, wherein,
The input unit, for the control command of receiving user's input, and the control command is sent to the control
Device processed；
The controller, for when the control command for receiving is enabled instruction, controlling the H NMR spectroscopy instrument and generating radio frequency
Pumping signal, and the rf excitation signal is sent to the NMR sensor by the duplexer；And, for by institute
State the nmr echo signal that NMR sensor detects to send to the H NMR spectroscopy instrument by the duplexer；
The NMR sensor, for after the rf excitation signal is received, tested region set up static magnetic field and
RF excited magnetic field, and detect nmr echo signal；
The duplexer, for carrying out the switching between rf excitation signal transmission and nmr echo signal transmission；
The H NMR spectroscopy instrument, for entering row index inversion procedure to the nmr echo signal, when obtaining transverse relaxation
Between, according to the degree of aging that the T2 obtains the composite insulator umbrella skirt；
The output device, for exporting the degree of aging data of the composite insulator umbrella skirt；
The power supply, for being that the controller and the H NMR spectroscopy instrument are powered.
Preferably, said system also includes：The power amplifier being connected between the H NMR spectroscopy instrument and the duplexer,
The power amplifier carries out being sent out by the duplexer after power amplification again to the rf excitation signal that the H NMR spectroscopy instrument sends
Deliver to the NMR sensor.
Preferably, said system also includes：The preamplifier being connected between the H NMR spectroscopy instrument and the duplexer,
After the preamplifier is amplified to nmr echo signal, retransmit to told H NMR spectroscopy instrument.
Preferably, said system also includes：The USB data transmission module being connected with the controller, the usb data are passed
Defeated module is used for connecting movable storage device.
Preferably, the controller is：32 single-chip microcomputers based on ARM kernels.
Preferably, the input unit and the output device are：Touch-screen.
Preferably, the H NMR spectroscopy instrument includes：Lock-in amplifier, the lock-in amplifier are detected using phase sensitive detection method
Nmr echo signal.
Preferably, the power supply is：Lithium battery.
Compared with prior art, technical scheme has advantages below：
A kind of magnetic resonance detection system for composite insulator umbrella skirt aging degree detecting that above-mentioned technical proposal is provided
System, using the degree of aging of nuclear magnetic resonance technique quantitative analysis composite insulator umbrella skirt in terms of microcosmic, improves testing result
The degree of accuracy；Also, the composite insulator umbrella skirt that NMR sensor detection is currently running, can realize on-line checking (engineering site
Detection), the operating efficiency of composite insulator umbrella skirt aging degree detecting is improve, and improves power supply reliability.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
A kind of magnetic resonance detection system for composite insulator umbrella skirt aging degree detecting that Fig. 1 is provided for the present embodiment
The structural representation of system；
Fig. 2 is used for the magnetic resonance detection of composite insulator umbrella skirt aging degree detecting for the another kind that the present embodiment is provided
The structural representation of system；
Fig. 3 is used for the magnetic resonance detection of composite insulator umbrella skirt aging degree detecting for the another kind that the present embodiment is provided
The structural representation of system；
Fig. 4 is used for the magnetic resonance detection of composite insulator umbrella skirt aging degree detecting for the another kind that the present embodiment is provided
The structural representation of system.
Specific embodiment
Accompanying drawing in below in conjunction with the embodiment of the present invention, to the embodiment of the present invention in technical scheme carry out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiment.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The present invention realizes composite insulator umbrella skirt aging degree detecting from materialogy angle using nuclear magnetic resonance technique.
Nuclear magnetic resonance technique is widely used in life medical treatment, food analysis, quality control, material supply section as a kind of nondestructiving detecting means
Field and geophysics field etc..Nuclear magnetic resonance technique obtains the MRS of H cores using the magnetic resonance characteristics of H atom core
(Magnetic Resonance Spectroscopy, Magnetic Resonance Spectrum), and some features according to MRS, the such as width of spectral line
Degree, shape and area understanding nuclear property and residing environment, to determine molecular structure.
Embodiments provide a kind of magnetic resonance detection system for composite insulator umbrella skirt aging degree detecting
System, referring to Fig. 1, shows the structural representation of the system, and the device includes：NMR(Nuclear Magnetic
Resonance, nuclear magnetic resonance) sensor 11, duplexer 12, H NMR spectroscopy instrument 13, controller 14, input unit 15, output device 16
With power supply 17, wherein,
Input unit 15, for the control command of receiving user's input, and the control command is sent to controller 14；
Controller 14, for when the control command for receiving is enabled instruction, control H NMR spectroscopy instrument 13 generates RF excited
Signal, and the rf excitation signal is sent to NMR sensor 11 by duplexer 12；It is additionally operable to examine NMR sensor 11
The nmr echo signal for measuring is sent to H NMR spectroscopy instrument 13 by duplexer 12；
NMR sensor 11, for, after the rf excitation signal is received, setting up static magnetic field in tested region and penetrating
Frequency excitation field, and detect nmr echo signal；
Duplexer 12, for carrying out the switching between rf excitation signal transmission and nmr echo signal transmission；
H NMR spectroscopy instrument 13, for entering row index inversion procedure to the nmr echo signal, when obtaining transverse relaxation
Between, according to the degree of aging that the T2 obtains the composite insulator umbrella skirt；
Output device 16, for exporting the degree of aging of the composite insulator umbrella skirt；
Power supply 17, for being that controller 14 and H NMR spectroscopy instrument 13 are powered.
Based on the composite insulator umbrella skirt aging state-detection principle of nuclear magnetic resonance it is：For the full skirt of composite insulator,
The state of the hydrogen nuclei in its molecule is fixed, that is, its T2 T2 is changeless.When compound exhausted
Edge full skirt occur aging after, the chemical change such as its strand ruptures, recombinates, the state of hydrogen nuclei just there occurs change
Change.At this moment measure the T2 T2 for obtaining and also just there occurs change, the present invention is by measuring T2
The size of T2 is obtaining the degree of aging of composite insulator umbrella skirt.
Magnetic resonance detection system for composite insulator umbrella skirt aging degree detecting provided in an embodiment of the present invention, profit
With the degree of aging of nuclear magnetic resonance technique quantitative analysis composite insulator umbrella skirt in terms of microcosmic, the accurate of testing result is improve
Degree；Also, the composite insulator umbrella skirt that NMR sensor detection is currently running, can realize on-line checking (engineering site detection),
The operating efficiency of composite insulator umbrella skirt aging degree detecting is improve, and improves power supply reliability.
The embodiment of the present invention also provides another kind of magnetic resonance detection for composite insulator umbrella skirt aging degree detecting
System, referring to Fig. 2, shows the structural representation of the system, the system also include being connected to H NMR spectroscopy instrument 13 and duplexer 12 it
Between power amplifier 18.Power amplifier 18 leads to after carrying out power amplification to the rf excitation signal that H NMR spectroscopy instrument 13 sends again
Cross duplexer 12 to send to NMR sensor 11.RF energy is enabled preferably to encourage sample to produce nmr echo signal.
The embodiment of the present invention also provides another kind of magnetic resonance detection for composite insulator umbrella skirt aging degree detecting
System, referring to Fig. 3, shows the structural representation of the system, the system also include being connected to H NMR spectroscopy instrument 13 and duplexer 12 it
Between preamplifier 19.After preamplifier 19 is amplified to nmr echo signal, retransmit to H NMR spectroscopy instrument 13,
It is easy to H NMR spectroscopy instrument 13 to detect nmr echo signal.
The embodiment of the present invention also provides another kind of magnetic resonance detection for composite insulator umbrella skirt aging degree detecting
System, referring to Fig. 4, shows the structural representation of the system, and the system also includes being connected USB data transmission mould with controller 14
Block 20, for connecting movable storage device.Testing result can be copied to mobile storage by USB data transmission module 20 to set
Standby, it is easy to follow-up process.
Preferably, controller 14 is 32 single-chip microcomputers based on ARM kernels.Using 32 single-chip microcomputers based on ARM kernels,
As the single-chip microcomputer integrated level is high, not only meet the requirement of fast signal process, also save a lot of peripheral circuits, reduce this
The volume of bright system, easily facilitates carrying.
Preferably, input unit 15 and output device 16 are touch-screen.Friendly man-machine interaction body is provided using touch-screen
Test.Facilitate engineer when using present system, a series of operation can be carried out by point touching screen directly, after process
Data and figure show on a display screen, obvious understandable.
Preferably, H NMR spectroscopy instrument 13 includes that lock-in amplifier, lock-in amplifier detect nuclear magnetic resonance using phase sensitive detection method
Echo-signal.Lock-in amplifier detects nmr echo signal using phase sensitive detection method so that present system suppresses suppression
The performance of noise processed improves several orders of magnitude.Its general principle is synchronous relevant detection, i.e., identical using having with measured signal
The reference signal of frequency and phase relation as benchmark, only to measured signal itself and those with reference signal with frequently (or
Person's frequency multiplication), the noise component(s) of homophase have response.Accordingly, it is capable to significantly suppress useless noise, improve detection signal-to-noise ratio.
Preferably, power supply 17 is lithium battery.Lithium battery energy density is high, lightweight, further reduces present system
Volume and weight, easily facilitate carrying.
It should be noted that term " including ", "comprising" or its any other variant are intended to the bag of nonexcludability
Contain, so that a series of process, method, article or equipment including key elements not only includes those key elements, but also including
Other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment.
In the absence of more restrictions, the key element for being limited by sentence "including a ...", it is not excluded that including the key element
Process, method, also there is other identical element in article or equipment.
In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
Multiple modifications of these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope for causing.
Claims (8)
1. a kind of magnetic resonance detection system for composite insulator umbrella skirt aging degree detecting, it is characterised in that include：
NMR sensor, duplexer, H NMR spectroscopy instrument, controller, input unit, output device and power supply, wherein,
The input unit, for the control command of receiving user's input, and the control command is sent to the controller；
The controller, for when the control command for receiving is enabled instruction, controlling the H NMR spectroscopy instrument and generating RF excited
Signal, and the rf excitation signal is sent to the NMR sensor by the duplexer；And, for by the NMR
The nmr echo signal that sensor is detected is sent to the H NMR spectroscopy instrument by the duplexer；
The NMR sensor, for, after the rf excitation signal is received, setting up static magnetic field and radio frequency in tested region
Excitation field, and detect nmr echo signal；
The duplexer, for carrying out the switching between rf excitation signal transmission and nmr echo signal transmission；
The H NMR spectroscopy instrument, for entering row index inversion procedure to the nmr echo signal, obtains T2,
According to the degree of aging that the T2 obtains the composite insulator umbrella skirt；
The output device, for exporting the degree of aging data of the composite insulator umbrella skirt；
The power supply, for being that the controller and the H NMR spectroscopy instrument are powered.
2. system according to claim 1, it is characterised in that also include：It is connected to the H NMR spectroscopy instrument and the duplexer
Between power amplifier, the power amplifier carried out after power amplification to the rf excitation signal that the H NMR spectroscopy instrument sends
Sent to the NMR sensor by the duplexer again.
3. system according to claim 1, it is characterised in that also include：It is connected to the H NMR spectroscopy instrument and the duplexer
Between preamplifier, after the preamplifier is amplified to nmr echo signal, retransmit to told H NMR spectroscopy
Instrument.
4. system according to claim 1, it is characterised in that also include：The USB data transmission being connected with the controller
Module, the USB data transmission module are used for connecting movable storage device.
5. system according to claim 1, it is characterised in that the controller is：32 monolithics based on ARM kernels
Machine.
6. system according to claim 1, it is characterised in that the input unit and the output device are：Touch-screen.
7. system according to claim 1, it is characterised in that the H NMR spectroscopy instrument includes：Lock-in amplifier, the lock phase
Amplifier detects nmr echo signal using phase sensitive detection method.
8. system according to claim 1, it is characterised in that the power supply is：Lithium battery.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610907461.6A CN106501297A (en) | 2016-10-17 | 2016-10-17 | A kind of NMR measuring system for the detection of composite insulator degree of aging |
| JP2017564660A JP2018538510A (en) | 2016-10-17 | 2017-10-17 | Nuclear magnetic resonance detection system for detecting the aging degree of composite insulators |
| PCT/CN2017/106597 WO2018072698A1 (en) | 2016-10-17 | 2017-10-17 | Nuclear magnetic resonance measurement system for detecting degree of aging of composite insulator umbrella skirt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610907461.6A CN106501297A (en) | 2016-10-17 | 2016-10-17 | A kind of NMR measuring system for the detection of composite insulator degree of aging |
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| CN106501297A true CN106501297A (en) | 2017-03-15 |
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| CN201610907461.6A Pending CN106501297A (en) | 2016-10-17 | 2016-10-17 | A kind of NMR measuring system for the detection of composite insulator degree of aging |
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| JP (1) | JP2018538510A (en) |
| CN (1) | CN106501297A (en) |
| WO (1) | WO2018072698A1 (en) |
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| CN107402225A (en) * | 2017-07-07 | 2017-11-28 | 云南电网有限责任公司大理供电局 | Radio-frequency electromagnetic relaxation behavior measuring system |
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| CN109709111A (en) * | 2019-02-27 | 2019-05-03 | 江苏双汇电力发展股份有限公司 | Composite insulator ultra-wide band radio-frequency sensing intelligent fitting and its application method |
| 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 |
| US11415535B2 (en) | 2018-05-23 | 2022-08-16 | Electricite De France | Method and device for the non-destructive testing of an elastomer cable insulation sheath |
| CN115420765A (en) * | 2022-09-02 | 2022-12-02 | 国网湖北省电力有限公司超高压公司 | Composite insulator aging nuclear magnetic relaxation spectrum characteristic spectrum searching and analyzing method |
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| CN109374516A (en) * | 2018-11-30 | 2019-02-22 | 中国电力科学研究院有限公司 | A kind of route suspended compound insulator surface dusting detection method |
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| US11415535B2 (en) | 2018-05-23 | 2022-08-16 | Electricite De France | Method and device for the non-destructive testing of an elastomer cable insulation sheath |
| CN109580690A (en) * | 2018-12-12 | 2019-04-05 | 广西电网有限责任公司电力科学研究院 | It is a kind of to be applicable in the composite insulating material aging non-destructive measuring method carried out on site |
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| CN109709111A (en) * | 2019-02-27 | 2019-05-03 | 江苏双汇电力发展股份有限公司 | Composite insulator ultra-wide band radio-frequency sensing intelligent fitting and its application method |
| CN109709111B (en) * | 2019-02-27 | 2021-03-30 | 江苏双汇电力发展股份有限公司 | Composite insulator ultra-wideband radio frequency sensing intelligent hardware and use method thereof |
| 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 |
| CN115420765A (en) * | 2022-09-02 | 2022-12-02 | 国网湖北省电力有限公司超高压公司 | Composite insulator aging nuclear magnetic relaxation spectrum characteristic spectrum searching and analyzing method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018072698A1 (en) | 2018-04-26 |
| JP2018538510A (en) | 2018-12-27 |
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