CN114577331B - Application of sensor preparation liquid in cable defect treatment - Google Patents
Application of sensor preparation liquid in cable defect treatment Download PDFInfo
- Publication number
- CN114577331B CN114577331B CN202210199240.3A CN202210199240A CN114577331B CN 114577331 B CN114577331 B CN 114577331B CN 202210199240 A CN202210199240 A CN 202210199240A CN 114577331 B CN114577331 B CN 114577331B
- Authority
- CN
- China
- Prior art keywords
- cable
- sensor
- preparation liquid
- frequency
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 55
- 239000007788 liquid Substances 0.000 title claims abstract description 53
- 230000007547 defect Effects 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 54
- 230000008878 coupling Effects 0.000 claims abstract description 18
- 238000010168 coupling process Methods 0.000 claims abstract description 18
- 238000005859 coupling reaction Methods 0.000 claims abstract description 18
- 239000003822 epoxy resin Substances 0.000 claims abstract description 17
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000853 adhesive Substances 0.000 claims abstract description 7
- 230000001070 adhesive effect Effects 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 239000010703 silicon Substances 0.000 claims abstract description 6
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 6
- 230000008021 deposition Effects 0.000 claims abstract description 5
- 239000011230 binding agent Substances 0.000 claims abstract description 4
- 239000000428 dust Substances 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 230000009471 action Effects 0.000 claims description 14
- 230000005684 electric field Effects 0.000 claims description 9
- 230000005672 electromagnetic field Effects 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000007726 management method Methods 0.000 claims description 7
- 229910000859 α-Fe Inorganic materials 0.000 claims description 7
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 claims description 6
- 229910052451 lead zirconate titanate Inorganic materials 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 claims description 4
- 244000005700 microbiome Species 0.000 claims description 4
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 claims description 4
- NLSFWPFWEPGCJJ-UHFFFAOYSA-N 2-methylprop-2-enoyloxysilicon Chemical compound CC(=C)C(=O)O[Si] NLSFWPFWEPGCJJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 claims description 3
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 claims description 3
- UGACIEPFGXRWCH-UHFFFAOYSA-N [Si].[Ti] Chemical compound [Si].[Ti] UGACIEPFGXRWCH-UHFFFAOYSA-N 0.000 claims description 3
- 229910002113 barium titanate Inorganic materials 0.000 claims description 3
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims description 3
- UKDIAJWKFXFVFG-UHFFFAOYSA-N potassium;oxido(dioxo)niobium Chemical compound [K+].[O-][Nb](=O)=O UKDIAJWKFXFVFG-UHFFFAOYSA-N 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 3
- GDTSJMKGXGJFGQ-UHFFFAOYSA-N 3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound O1B([O-])OB2OB([O-])OB1O2 GDTSJMKGXGJFGQ-UHFFFAOYSA-N 0.000 claims description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 239000002033 PVDF binder Substances 0.000 claims description 2
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 2
- 229910002796 Si–Al Inorganic materials 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 229910001308 Zinc ferrite Inorganic materials 0.000 claims description 2
- WOIHABYNKOEWFG-UHFFFAOYSA-N [Sr].[Ba] Chemical compound [Sr].[Ba] WOIHABYNKOEWFG-UHFFFAOYSA-N 0.000 claims description 2
- HRZMCMIZSOGQJT-UHFFFAOYSA-N [Zn].[Mn].[Mg] Chemical compound [Zn].[Mn].[Mg] HRZMCMIZSOGQJT-UHFFFAOYSA-N 0.000 claims description 2
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- 229940099352 cholate Drugs 0.000 claims description 2
- BHQCQFFYRZLCQQ-OELDTZBJSA-N cholic acid Chemical compound C([C@H]1C[C@H]2O)[C@H](O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H]([C@@H](CCC(O)=O)C)[C@@]2(C)[C@@H](O)C1 BHQCQFFYRZLCQQ-OELDTZBJSA-N 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 239000011353 cycloaliphatic epoxy resin Substances 0.000 claims description 2
- 229910052733 gallium Inorganic materials 0.000 claims description 2
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 2
- 239000010453 quartz Substances 0.000 claims description 2
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 2
- 229920002050 silicone resin Polymers 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical compound [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 10
- 239000002245 particle Substances 0.000 abstract description 10
- 230000032683 aging Effects 0.000 abstract description 6
- 230000008439 repair process Effects 0.000 abstract description 6
- 238000010897 surface acoustic wave method Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 3
- 230000006870 function Effects 0.000 abstract description 3
- 230000005426 magnetic field effect Effects 0.000 abstract description 2
- 239000000696 magnetic material Substances 0.000 abstract description 2
- 230000008054 signal transmission Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 21
- 238000012360 testing method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 238000005452 bending Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 239000004703 cross-linked polyethylene Substances 0.000 description 5
- 229920003020 cross-linked polyethylene Polymers 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000011049 filling Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 125000002723 alicyclic group Chemical group 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000257303 Hymenoptera Species 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
- G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention provides an application of a sensor preparation liquid in cable defect treatment, which mainly comprises piezoelectric powder, a magnetically sensitive material, organic silicon, epoxy resin and a binder; the volume ratio of the chemical components is 5-50% of piezoelectric powder, 1-30% of epoxy resin, 5-15% of magnetosensitive material, 20-50% of organosilicon and 1-10% of adhesive. Through the mixing of the high-frequency magnetic material and the piezoelectric material and the combination of the high-frequency magnetic field effect, the functions of uniform permeation of the preparation liquid in the cable and dust removal and scale removal are realized, and the problems that the core oxide layer, the insulating layer discharge missing impurities and carbon deposition particles are not fully considered in the existing cable aging repair process are solved; meanwhile, the sensor can be used as a cable sensor, and detection signal transmission is realized by utilizing wires in a cable, namely, a typical electromagnetic coupling and surface acoustic wave composite sensor is formed by combining electromagnetic coupling and mechanical-electrical signal conversion technology of piezoelectric materials, and the sensor can be used as an analog sensor and a digital sensor.
Description
The application is a division of application date 2019.12.23, application number CN201911333758.6 and the invention name of a sensor preparation liquid and application thereof.
Technical Field
The invention belongs to the field of materials, relates to application of a sensor preparation liquid in cable defect treatment, and in particular relates to application of a cable sensor preparation liquid in cable defect treatment.
Background
At present, the sensor is widely applied to the aspects of gas, pressure, ultrasonic wave and vibration, and various miniature film sensors are started to appear along with the popularization of integrated circuit processes, so that the sensor is widely applied to the industrial and civil economic fields.
However, there is another gap in the direction of the current sensor based on the piezoelectric material, that is, when the monitored area is narrow in space or large in size, the existing sensor made of the piezoelectric material often cannot meet the actual requirements.
The traditional piezoelectric cable is only a single-core cable with a coaxial structure, piezoelectric materials are arranged between the wire cores, but a thicker insulating layer is arranged between the wire cores and the shielding metal layer, the working frequency is narrow, the flexibility of the traditional piezoelectric cable is poor, and the traditional piezoelectric cable can only respond to deformation caused by heavy weight pressure, so that the traditional piezoelectric cable can only be used for low-frequency occasions with large pressure values (such as tens of kilograms to hundreds of kilograms), such as ground pressure detection of human body ground intrusion, automobile security inspection and the like, and cannot be used as a high-sensitivity sensor for detecting gaps, high-frequency vibration, temperature and the like.
One typical application of this patent is: for monitoring of a long and narrow area, such as internal defect monitoring of a bridge, a plurality of mounting points are required to be arranged, or the number of sensor distribution points is required to be saved by considering that a plurality of monitoring positions are preferred, which is obviously not a very effective solution, because the number of sensors is large, the problems of mutual coordination among the sensors, networking and mutual information interference are necessarily generated, and if the monitoring points are dense, the sensors in certain areas do not work or work abnormally, and the monitoring result can be misjudged.
Disclosure of Invention
It is a first object of the present invention to provide a sensor preparation liquid and to provide the use of a sensor preparation liquid.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the sensor preparation liquid comprises piezoelectric powder, a magnetically sensitive material, organic silicon, epoxy resin and a binder as main chemical components; the volume ratio of the chemical components is 5-50% of piezoelectric powder, 1-30% of epoxy resin, 5-15% of magnetosensitive material, 20-50% of organosilicon and 1-10% of adhesive.
The epoxy resin is a cycloaliphatic epoxy resin.
The piezoelectric powder is formed by mixing one or more of quartz, lithium niobate, lithium pyroborate, lithium cholate, bismuth germanate, barium titanate, lanthanum gallium silicate, potassium niobate, lead zirconate titanate, potassium sodium niobate, potassium sodium metaniobate, barium strontium metaniobate, magnesium niobate lead zirconate titanate, lithium niobate lead zirconate titanate, aluminum oxide, zinc oxide, polyvinylidene fluoride and polyvinyl chloride;
the magnetic sensitive material is one of soft magnetic ferrite, manganese zinc ferrite, cobalt ferrite, fe-Si-Al ferrite, nickel-zinc ferrite and manganese-magnesium-zinc ferrite;
the organic silicon is one or more of silane coupling agent, vinyl silane, amino silane, methacryloxy silane, room temperature vulcanized silicone rubber and silicone resin.
At present, sensors based on piezoelectric materials are widely applied to the aspects of gas, pressure, ultrasonic waves and vibration, but the sensors prepared by the existing pressure materials often cannot meet the actual demands. The sensor preparation liquid not only comprises piezoelectric powder but also comprises a magnetic sensitive material, and a typical electromagnetic coupling and surface acoustic wave composite sensor can be prepared by utilizing the material by utilizing the combination of electromagnetic coupling and a mechanical-electrical signal conversion technology of the piezoelectric material.
In order to improve the performance of the sensor, the epoxy resin used in the application adopts alicyclic epoxy resin, and the epoxy resin has higher compression and tensile strength; good mechanical properties can be maintained even under the condition of high temperature after long-term exposure; the arc resistance, ultraviolet aging resistance and weather resistance are good.
The invention also provides application of the sensor preparation liquid in a cable sensor.
The cable type sensor is prepared from the sensor preparation liquid, and consists of a cable with a cable core and a sheath and the sensor preparation liquid:
the cable is a single-core cable, a multi-core cable, a leakage cable, a feeder cable, a silica gel tube cable or a polyurethane tube cable;
the wire core is a wire core with bare or insulated package, and the miniature PCB is printed with copper wires and interdigital electrodes.
The cable type sensor prepared by the sensor preparation liquid can realize flexible extension and contraction of the sensor, can be used for long and narrow areas and three-dimensional monitoring equipment, and can also be used for monitoring application in wide areas, so that the application range is effectively improved.
The preparation method of the cable sensor comprises the following steps: and adding the sensor preparation liquid between the sheath and the wire core of the cable in a filling, sealing, spraying or filling mode, and forming the cable sensor after the sensor preparation liquid is solidified.
The cable sensor has the following advantages:
firstly, it has solved the sensor and has monitored the external shape problem of during operation in plane or narrow area, can realize the state monitoring of cable along line equipment according to the straight line laying of scene condition, also can form the cable bending and cover the face widely, reaches the mesh of face monitoring, avoids the matching that a plurality of sensors arrange and brings, power supply complicacy and installation reliability problem.
Secondly, the structure of the wire core in the preparation of the liquid curing material is utilized, and the stereo surface acoustic wave and electromagnetic induction principle are combined, so that better detection sensitivity is realized. For example, when a single-core structure is adopted, when signals are injected at two ends of the wire core, electromagnetic field effect can generate induced voltage around the wire core, and the induced voltage and the piezoelectric material form electro-mechanical conversion to generate vibration signals. The vibration signal propagates inside the cable sensor, and when external pressure or other vibration signals are encountered, the vibration frequency inside the cable sensor is changed, so that the electromechanical conversion frequency of the vibration-electric signal is changed, and the amplitude and frequency of the electric signal fed back into the wire core are changed.
The cable sensor can be used for an active state driven digital frequency measurement working mode and can be used for passive state monitoring output, so that the cable sensor has higher flexibility. The invention utilizes the electromagnetic induction and electromechanical coupling principle to realize the cable sensor structure, has the characteristics of analog quantity output and digital quantity output, and can be realized in an analog mode of measuring output voltage or in a digital mode of measuring the frequency of an output signal.
The cable sensor can be used as a digital sensor, an analog sensor or a wireless sensor:
1) Digital sensor: injecting a voltage signal into the cable sensor, wherein the frequency is f1; testing the feedback voltage reflection signal or the current feedback signal, wherein the frequency is f2; comparing and analyzing the frequencies of the input voltage signal and the feedback current signal or the voltage reflection signal (delta f=f1-f 2), and obtaining the working state of the cable type sensor according to the delta f value;
2) Analog sensor: testing the voltage signal of the wires in the cable sensor: the cable type sensor is of a single-core cable structure and is used for testing voltage signals at two ends of a wire core; the cable sensor is a multi-core cable and is used for testing voltage signals at two sides of any single-core cable or voltage signals between two core conductors; calculating signal intensity and frequency according to the voltage signal;
3) A wireless sensor: the cable type sensor is made into a spiral shape, a tubular shape, a U shape, a J shape or a fishbone shape; when the cable sensor works, the electric signal converted from the internal ultrasonic wave or vibration signal is transmitted and transmitted to the outside through the wire core; and after the remote end receives the wireless signal transmitted by the cable sensor, the working state signal of the cable sensor is obtained by the method of 2) or 3).
The invention realizes the transmission of detection signals by utilizing the wires in the cable, and is essentially a combination of the electromagnetic coupling and the mechanical-electrical signal conversion technology of piezoelectric materials, which is a typical electromagnetic coupling and surface acoustic wave composite sensor, and can be used as an analog sensor and a digital sensor.
In particular, the cable sensor of the invention can be used for monitoring the state of a power cable, preferably for monitoring the bulge and discharge of an intermediate joint of the power cable.
The invention also provides application of the sensor preparation liquid in cable defect treatment.
The defect management method of the cable comprises the following steps:
1) Injecting titanium dioxide, titanium catalyst or silicon titanium catalyst into the cable with defects to be treated or prevented, and cleaning impurities in the cable;
2) Applying a high-frequency single-frequency voltage signal, a sweep-frequency voltage signal or a frequency modulation signal with bias voltage to the cable; the bias voltage accounts for 1% -49%;
3) Injecting sensor preparation liquid into a wire core, an armor layer, a shielding layer or a sheath layer of the cable;
4) Under the action of high-frequency voltage, a high-frequency electromagnetic field and a direct-current polarized electric field are generated under the bias voltage, and electromagnetic coupling is realized with the magnetosensitive material in the sensor preparation liquid, so that a uniform high-frequency electromagnetic field is rapidly generated in the cable core;
5) Under the combined action of the high-frequency electromagnetic field and the high-frequency voltage, the piezoelectric material generates electro-mechanical conversion to generate a vibration signal or an ultrasonic signal, carbon deposition, dust, microorganisms or dirt on the wire core oxidation layer and the insulating layer are stripped, and the vibration signal also promotes the uniform permeation of the preparation liquid in the cable body.
And 3) adding a positive charge sacrificial agent or a negative charge sacrificial agent when the sensor preparation liquid is injected in the step 3).
Under the action of an alternating current electric field, the piezoelectric material continuously generates organic-electric conversion, and water-based molecules are decomposed into hydroxides: when a positive charge sacrificial agent is added, such as sodium sulfite positive charge sacrificial agent, the water decomposed product is hydrogen and hydroxide; when a negative charge sacrificial agent is added, the water will decompose into oxygen and hydroxide.
In particular, the defect management of the cable related to the invention can be also used for the production (intelligent sensing, ageing resistance and the like) of novel power cables, key technology for preventing defects in the manufacturing process of cable intermediate joints, or the improvement of the reliability of waste cables, the recycling of waste cables, the intelligent upgrading and reconstruction of cable intermediate joints or explosion-proof boxes, the rust removal of sheath layers, the microorganism removal and the like.
The invention has the following advantages and beneficial effects:
the preparation method of the cable sensor realizes an economic and reliable solution of taking the cable as the sensor, and simultaneously realizes a treatment scheme of cable defects, wherein the defect treatment scheme has the following advantages:
(1) Through programmed distributed treatment, the problem that impurities react with the repair liquid chemically and stay in the cable when the repair liquid is used as a modulated chemical finished product in the existing cable aging repair scheme is solved;
(2) Through the mixing of the high-frequency magnetic material and the piezoelectric material and the combination of the high-frequency magnetic field effect, the uniform permeation and dust removal functions of the preparation liquid in the cable are realized, and the problem that the discharge of the core oxide layer and the insulating layer is not fully considered to miss impurities in the existing cable aging repair process is solved;
(3) After the preparation, the magnetic and piezoelectric materials are reserved in the cable, and the cable can be used as electric power or information communication equipment and also can be used as a sensor, so that the cable is convenient for later maintenance;
(4) Experiments prove that under the working voltage, the continuous action of the internal piezoelectric material and the magnetic sensitive material is realized, the results of the cable insulation protection layer and the cable core are optimized, tiny particles are stopped in the gaps of the cable core, the particles are prevented from entering the insulation layer to damage, the tiny gaps in the cable insulation layer generate micro-vibration, discharge residues are separated from each other, the good elastic coefficient is maintained, and the self-recovery effect of the gaps is generated.
(5) The device is suitable for improving the reliability of the cable with defects, can remove carbon deposition and impurities in the cable through ultrasonic waves or micro vibration, combines a high-frequency offset electric field and preparation liquid to neutralize moisture, can optimize the structure of the internal electric field, reduces the cable loss, and improves the corrosion resistance and ageing resistance.
Drawings
FIG. 1 is a schematic diagram of a dual-wire core cable sensor;
FIG. 2 is a schematic diagram of a three-wire cable sensor;
FIG. 3 is a schematic diagram of a curved cable sensor;
FIG. 4 is a schematic diagram of a curved cable sensor for bridge vibration monitoring;
FIG. 5 is a schematic diagram of a cable sensor for temperature detection;
FIG. 6 is a schematic diagram of a cable sensor for use in high voltage power cable intermediate joint detection;
fig. 7 is a schematic diagram of a cable sensor for air pollution particle detection.
In the figure: 1. a first wire core; 2. a second wire core; 3. a sheath; 4. a sensor material; 5. a wire core III; 11. a signal generator; 12. a collector; 13. an analog-to-digital converter; 18. a sensitive coating; 19. a cable sensor; 20. a curved cable sensor; 21. a bridge; 22. a copper shovel; 23. high temperature equipment; 24. a high voltage power cable intermediate joint; 25. high-voltage power cable core
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings in the embodiments, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1, the cable sensor is a double-wire cable sensor, the length of the cable sensor is 20cm, a first wire core 1 and a second wire core 2 are used as two end points of an output signal, the sensor material 4 is formed by solidifying a sensor preparation liquid, and the sensor preparation liquid is as follows: 50% of piezoelectric powder, 10% of epoxy resin, 15% of magnetic sensitive material, 20% of organosilicon and 5% of adhesive. Wherein the piezoelectric powder is potassium niobate (KNbO) 3 ) The epoxy resin is alicyclic epoxy resin, the organic silicon adopts room temperature vulcanized silicone rubber, the magnetically sensitive material is manganese zinc ferrite, and the adhesive is E-44 epoxy resin adhesive.
The signal generator 11 injects test voltage signals into the cable sensor through the first wire core 1 and the second wire core 2 terminals, and obtains output voltage values and frequency values of the output voltage signals at the output end of the other end through the collector 12. The collectors 12 connected at the output are in parallel connection, and may include signal collectors and/or counters, and the present invention is not particularly differentiated for convenience of description.
The cable type sensor is used for monitoring vibration signals of the high-voltage switch cabinet, and the sensor is arranged on the electric switch cabinet body in the vertical direction. When the switch cabinet works normally, the voltage signal at the output end between the wire cores is measured to be 0.1V through the acquisition and counter, and the center frequency is 100kHz. When a 1MHz voltage signal is applied between the first wire core and the second wire core, the frequency of the output end signal passing through the acquisition and counter between the first wire core and the second wire core is 1MHz. When the switch cabinet is internally discharged, ultrasonic vibration signals are generated, and the output voltage between the cable sensors is 2.6V. When a 1MHz voltage signal is applied between the wire cores, the frequency of the output signal is 0.95MHz, and the difference frequency is 0.05MHz.
Therefore, the sensor can work in a mode of testing analog voltage, and the state output of the sensor can be obtained by the frequency difference obtained when the high-frequency signal passes through the sensor.
It should be noted that, when the cable sensor has only a single-core cable, the output voltage values can be tested at two sides of the single-core cable of the sensor, and due to the action of the piezoelectric material inside the cable sensor, the cable sensor can generate electromechanical conversion when sensing external vibration, and the high-frequency signal can be quickly transmitted out by combining the action of the internal magneto-sensitive material. Therefore, if the cable sensor with a single-core structure is required to be used as a digital sensor, that is, the working state of the sensor is obtained by testing the frequency variation, the high-frequency signal f1 is directly input to two ends of the single-core cable, and the reflected high-frequency signal f2 is measured at the same time, or the current signal f3 is measured, and the difference frequency signal is obtained through f1-f2 or f1-f 3. It is obvious that when a single-core cable is used, a waveform collector or oscilloscope needs to be connected to the 1,2 signal injection end for measuring the reflected signal, which will not be described here.
Example 2
When the number of the wire cores is larger, sensing multiplexing output can be realized, as shown in fig. 2, and as compared with the embodiment 1, one wire core three 5 is added:
the sensor test signal is 1MHz, the signal generator 11 is injected through the wire core III 5, under the action of the magneto-sensitive material and the piezoelectric material in the cable type sensor, the high-frequency signal injected through the wire core three terminal generates electric-mechanical signal conversion through the piezoelectric material in the sensor material 4, and simultaneously, the other wire core II 2 generates mechanical-electric signal conversion to obtain an electric signal. When a high-frequency signal is injected into the three terminals of the wire cores due to electromagnetic field induction, a coupling voltage is generated between the other two wire cores, and the coupling voltage is superimposed with the signal after the motor-electromechanical conversion of the piezoelectric material to obtain a final signal. Thus, signals of the same frequency can be obtained between the other two wire cores.
The wire core one terminal is connected with the analog-digital converter 13, the voltage value is directly measured, the wire core two terminals are connected with the collector 12, and the collector is a frequency counter, so that a frequency signal is obtained. Therefore, the test between the wire cores is completed through two modes of electromagnetic and piezoelectric coupling, wherein the piezoelectric coupling can sensitively sense pressure or vibration or temperature signals sensed by the cable, and the electromagnetic coupling mode can sense external pressure signals, for example, when pressure is generated, the equivalent capacitance between the wire cores is changed, or the equivalent inductance of the wire cores is changed, so that the signal transmission characteristics are influenced. Based on the structure of the cable sensor, abundant state information can be obtained for analysis. Of course, the electromagnetic coupling coefficient can be reduced or improved, or the electromechanical coupling coefficient can be reduced or improved, etc. by adjusting the proportion of the preparation materials.
Example 3
As shown in fig. 3, the cable sensor has a single-core structure, and the sensor preparation liquid is selected as follows: 70% of piezoelectric powder, 10% of epoxy resin, 5% of magnetic sensitive material, 10% of organosilicon and 5% of adhesive. The cable sensor has the length of 2000cm, is bent into the following shape, is used for bridge vibration monitoring as a bending cable sensor, and has the external dimensions of: 800 cm. Times.50 cm.
Typically applied to bridge 21, let bridge 21 need the length of monitoring be 8 meters, highly be 0.5 meter, if according to traditional some monitoring sensor, every some monitoring sensor monitors only 0.1 square meter scope, then at least need 40 some monitoring sensors can reach accurate monitoring's purpose. The sensors are distributed more, and various problems of information and power supply interconnection and installation among the sensors are obviously introduced, so that the reliability is affected. As shown in fig. 4, the bending cable sensor is arranged below the bridge, one end of the bending cable sensor is connected with the signal generator 11, and the other end of the bending cable sensor is connected with the collector 12, so that detection in the range of 4 square meters can be realized. When the device is in a working state, the range of the induced vibration signal is 3000Hz-400kHz, and the signal is emitted outwards through the coil inductance effect of the bending structure. If the transmitting power needs to be increased, two ends of the wire core can be connected with a 500 ohm resistance value, so that the current in the coil is improved, and further-distance transmission is realized.
Example 4
As shown in fig. 5, the difference from embodiments 1 to 3 is that the cabling sensor has a two-wire structure, wherein one wire core is connected with an external copper shovel 22, and the copper shovel 22 is connected with a high-temperature device 23 to realize high-temperature transmission. The cabled sensor is 6cm long and the external copper spade 22 is 1cm long. At normal temperature of 25 ℃, 433MHz signals are injected into the cable-type sensor through the signal generator 11, and the feedback current signal frequency obtained by the collector 12 at the other end is 432.6MHz, and the difference frequency is 0.4MHz.
After the copper shovel contacts with external high-temperature equipment, the temperature of the high-temperature equipment is set to be 480 ℃. After 433MHz signal is injected into the other wire core, the obtained feedback current signal has a frequency of 430.1MHz and a difference frequency of 2.9MHz. Therefore, the difference frequency signal is directly related to the temperature sensed by the cable sensor, and the accurate corresponding relation between the difference frequency signal and the temperature can be obtained through laboratory simulation contrast test, which is not described in detail herein.
Example 5
The cable sensor shown in fig. 6 has a length of 80cm and a two-core structure for monitoring the state of the intermediate joint of the high-voltage power cable.
The cable sensor 19 is wound outside, the high-voltage power cable middle connector 24 is a 10kV XLPE insulated cable middle connector, under normal state, the voltage between the two core cables of the cable sensor is 0.16V, when the detected XLPE high-voltage cable bulges at high temperature, the deformation is sensed by the piezoelectric material inside the cable sensor, and the mechanical-electrical signal conversion is generated inside and coupled into the cable core. If the voltage detected by the wire core is increased from 0.16V to 0.33V, the bulge phenomenon can be judged. After the monitored cable bulges for a period of time, gaps are formed in the outer insulation, moisture enters the cable to drive the inner insulation performance to decrease, and a high-voltage discharge phenomenon is generated. The high-voltage discharge generates a high-frequency ultrasonic signal and drives the outer sheath to vibrate, the cable sensor generates rapid mechanical-electrical signal conversion inside after sensing, and is combined with the internal magneto-sensitive material to be rapidly coupled to the wire core, the voltage monitored by the wire core end reaches 3.6V, the voltage spectrum is observed through the spectrometer, and the center frequency is 60kHz. It is obvious that the present embodiment may also obtain the change of the middle joint of the high-voltage cable by injecting a high-frequency signal between two sides of the wire core or between the wire cores, collecting a feedback voltage or current signal, and calculating a frequency deviation, where the frequency deviation method is the same as that of embodiment 1 and embodiment 4, and is not described otherwise.
Example 6
In contrast to examples 1-5, the detection of relevant parameters is performed using a cable sensor coated with a sensitive material. The cable sensor 19 is provided with the length of 10cm, the outer sheath is peeled off in the range of 0.2cm at the two sides of the center point, and carbon nano materials are smeared on the peeled area to form a sensitive coating 18 for detecting pollutant particles in the air. When the sensitive coating is driven by the cable sensor 19, a weak electric field signal is formed, and the electric field signal forces the coupling efficiency and the signal propagation speed between cable sensor cores to change due to the sensitivity of the carbon nano sensitive coating to the external environment, so that the identification can be performed through the reflected voltage or feedback current or the frequency and amplitude change of the coupling output signals of other cores. The piezoelectric and magnetosensitive materials of the embodiment are of a three-dimensional encapsulating structure, not of a simple plane film structure, and the sensing purpose is achieved by changing the speed of the stereo surface acoustic wave by utilizing the concept of the stereo surface acoustic wave transmitted by transverse waves and longitudinal waves. The coating material can be changed to achieve the purpose of measuring other parameters such as electromagnetic fields and chemical gases, for example, a plurality of sensors are coated with different sensitive materials to be used in combination, and the coating material can also be used for measuring chromatograph, sound spectrum, spectrum and the like, and the details are not described here.
Example 7
The length of the 10kV XLPE cable is 100 meters, the 10kV XLPE cable runs for 19 years, a large amount of discharge gaps exist in an internal medium, moisture and other chemical corrosive substances exist in part of the gaps, if a chemical substance filling method is directly adopted, the chemical substances can not enter the gaps effectively, if a good treatment effect is to be achieved, a large amount of chemical substances are required, the chemical substances are injected and kept in an insulator for a long time under high pressure, the damage threat of the high pressure on the mechanical strength of the cable body exists, if a large amount of particles are formed by carbon deposition or oxide in the cable, the particles are accumulated or blocked by the simple injection of repair liquid, the particles can be stabbed and damage an insulating layer due to the long-term high pressure effect, and the fault hidden trouble is increased.
A300 kHz high-frequency voltage is applied between the cable core and the shielding ground layer, the peak voltage is 100V, and the bias direct-current voltage accounts for 20% of the peak value, namely 20V.
The XLPE cable is firstly injected with 500mL of silicon-titanium catalyst, 30 minutes later, the cable is injected with a preparation liquid, and the preparation liquid comprises barium titanate (volume ratio 10%), epoxy resin (10%), soft magnetic ferrite (5%), methacryloxy silane (65%) and binder (10%).
Under the action of high-frequency signals, a high-frequency electric field and a high-frequency current are generated inside the cable, and the high-frequency signals also act on the basis of the preparation liquid, so that the piezoelectric material inside the cable generates high-frequency vibration. Solid ultrasonic signals are generated under high-frequency vibration, gap residues of the high-voltage cable insulating layer fall off, the prepared liquid part starts to permeate into the gap, and moisture or water entering the gap reacts with moisture or water in the gap to generate part of solidified matters to fill the gap.
Meanwhile, under the action of a high-frequency signal, the piezoelectric material is filled in the metal gap, and mechanical vibration is continuously formed at the edge of the piezoelectric particles due to the metal conduction effect, and the mechanical vibration drives adjacent piezoelectric particles to generate a weak voltage signal. Because the high-frequency voltage has a direct-current bias component, the weak voltage signal generated by the piezoelectric material also has a direct-current bias component, so that the moisture in the insulating layer can be electrolyzed and decomposed into hydroxide, hydrogen and oxygen.
Because the cable insulating material is composed of various chemical substances and a multi-layer structure, various dirt is faced in the underground operation environment, and the micro water inside the cable has low purity, so that more hydroxide is produced, and less pure hydrogen and oxygen are produced.
In addition, under the action of the high-frequency electric field with bias, partial positive ions or negative ions can be absorbed and neutralized in the chemical reaction process of the electrolyzed water, and the hydroxide is mainly remained.
Practice proves that under the combined action of high-frequency signals and high-frequency vibration, the filling and sealing pressure of the injected preparation liquid can be reduced, the flow velocity of the preparation liquid in the cable is improved, the uniformity of cable defect treatment is improved, and the consumption of the preparation liquid is reduced.
The preparation liquid capacity of the 100-meter cable is 30L (liter) and the preparation time is 2 hours, while the preparation liquid capacity of the formula is 20L (liter) under the action of high-frequency electric signals, the preparation time is 50 minutes, the working efficiency can be obviously improved, and the bearing time of the cable under high-pressure encapsulation can be reduced.
If the operation period of the high-voltage cable is only 3 years, and only a small amount of internal area has discharge phenomenon, the operation can be finished by adopting a smaller amount of preparation liquid (such as 1L-5L).
In the same way, the method of the embodiment can also adopt a small amount of preparation liquid (typically 2L) for defect management of an armor gap layer between the high-voltage cable sheath layer and the main insulating layer, and the preparation liquid is injected into the armor gap to generate high-frequency vibration by utilizing the high-frequency voltage effect, so that rust matters, microorganisms, ants and the like of the armor layer are effectively stripped, and the reliability of the high-voltage cable sheath layer is improved.
Obviously, the high-voltage cable treated by the preparation liquid also has a sensor function, and can form reference or experience data by collecting the high-frequency vibration signals of the prepared cable or the intensity and frequency states of the high-frequency electric signals, so as to effectively track the running state of the high-voltage cable and reduce the investment and operation and maintenance costs for arranging various detection sensors outside the cable.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The application of the sensor preparation liquid in cable defect treatment is characterized in that:
the main chemical components of the preparation liquid comprise piezoelectric powder, a magnetically sensitive material, organic silicon, epoxy resin and a binder; the volume ratio of the chemical components is 5-50% of piezoelectric powder, 1-30% of epoxy resin, 5-15% of magnetically sensitive material, 20-50% of organosilicon, 1-10% of adhesive,
the defect management method of the cable comprises the following steps:
1) Injecting titanium dioxide, titanium catalyst or silicon titanium catalyst into the cable with defects to be treated or prevented, and cleaning impurities in the cable;
2) Applying a high-frequency single-frequency voltage signal, a sweep-frequency voltage signal or a frequency modulation signal with bias voltage to the cable; the bias voltage accounts for 1% -49%;
3) Injecting sensor preparation liquid into a wire core, an armor layer, a shielding layer or a sheath layer of the cable;
4) Under the action of high-frequency voltage, a high-frequency electromagnetic field and a direct-current polarized electric field are generated under the bias voltage, and electromagnetic coupling is realized with the magnetosensitive material in the sensor preparation liquid, so that a uniform high-frequency electromagnetic field is rapidly generated in the cable core;
5) Under the combined action of the high-frequency electromagnetic field and the high-frequency voltage, the piezoelectric material generates electro-mechanical conversion to generate a vibration signal or an ultrasonic signal, carbon deposition, dust, microorganisms or dirt on the wire core oxidation layer and the insulating layer are stripped, and the vibration signal also promotes the uniform permeation of the preparation liquid in the cable body.
2. Use of the sensor preparation liquid according to claim 1 in cable defect management, characterized in that: the epoxy resin is a cycloaliphatic epoxy resin.
3. Use of the sensor preparation liquid according to claim 1 in cable defect management, characterized in that:
the piezoelectric powder is formed by mixing one or more of quartz, lithium niobate, lithium pyroborate, lithium cholate, bismuth germanate, barium titanate, lanthanum gallium silicate, potassium niobate, lead zirconate titanate, potassium sodium niobate, potassium sodium metaniobate, barium strontium metaniobate, magnesium niobate lead zirconate titanate, lithium niobate lead zirconate titanate, aluminum oxide, zinc oxide, polyvinylidene fluoride and polyvinyl chloride;
the magnetic sensitive material is one of soft magnetic ferrite, manganese zinc ferrite, cobalt ferrite, fe-Si-Al ferrite, nickel-zinc ferrite and manganese-magnesium-zinc ferrite;
the organic silicon is one or more of silane coupling agent, vinyl silane, amino silane, methacryloxy silane, room temperature vulcanized silicone rubber and silicone resin.
4. Use of the sensor preparation liquid according to claim 1 in cable defect management, characterized in that: and 3) adding a positive charge sacrificial agent or a negative charge sacrificial agent when the sensor preparation liquid is injected in the step 3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210199240.3A CN114577331B (en) | 2019-12-23 | 2019-12-23 | Application of sensor preparation liquid in cable defect treatment |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911333758.6A CN110967109B (en) | 2019-12-23 | 2019-12-23 | Sensor preparation liquid and application thereof |
| CN202210199240.3A CN114577331B (en) | 2019-12-23 | 2019-12-23 | Application of sensor preparation liquid in cable defect treatment |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911333758.6A Division CN110967109B (en) | 2019-12-23 | 2019-12-23 | Sensor preparation liquid and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114577331A CN114577331A (en) | 2022-06-03 |
| CN114577331B true CN114577331B (en) | 2024-04-12 |
Family
ID=70035839
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911333758.6A Active CN110967109B (en) | 2019-12-23 | 2019-12-23 | Sensor preparation liquid and application thereof |
| CN202210199240.3A Active CN114577331B (en) | 2019-12-23 | 2019-12-23 | Application of sensor preparation liquid in cable defect treatment |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911333758.6A Active CN110967109B (en) | 2019-12-23 | 2019-12-23 | Sensor preparation liquid and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN110967109B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2577287Y (en) * | 2002-08-29 | 2003-10-01 | 深圳市华夏磁电子技术开发有限公司 | Gear sensor |
| CN101576577A (en) * | 2009-04-24 | 2009-11-11 | 西安易升电子有限公司 | Ceramic capacitive sensor for on-line monitoring |
| CN103529366A (en) * | 2013-09-22 | 2014-01-22 | 华北电力大学 | UHF (Ultra High Frequency) broadband current sensor based on Rogowski coil principle and joint monitoring system |
| CN106199357A (en) * | 2016-07-20 | 2016-12-07 | 国网天津市电力公司 | A kind of recombination current sensor of XLPE power cable in switch cubicle |
| CN109269688A (en) * | 2018-11-07 | 2019-01-25 | 江南大学 | A kind of pressure sensing array and preparation method thereof |
| CN110082656A (en) * | 2019-05-29 | 2019-08-02 | 成都高斯电子技术有限公司 | A kind of method and device thereof of cable aging dealing monitoring |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10132669A (en) * | 1996-10-30 | 1998-05-22 | Whitaker Corp:The | Piezo cable, and wire harness using it |
| US6835463B2 (en) * | 2002-04-18 | 2004-12-28 | Oakland University | Magnetoelectric multilayer composites for field conversion |
| CA2599153A1 (en) * | 2005-02-25 | 2006-08-31 | Nippon Kayaku Kabushiki Kaisha | Epoxy resin, hardenable resin composition containing the same and use thereof |
| CN110157258B (en) * | 2019-04-01 | 2021-12-24 | 中国船舶重工集团公司第七二五研究所 | Piezoelectric/electromagnetic hybrid drive antifouling coating material and preparation method thereof |
-
2019
- 2019-12-23 CN CN201911333758.6A patent/CN110967109B/en active Active
- 2019-12-23 CN CN202210199240.3A patent/CN114577331B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2577287Y (en) * | 2002-08-29 | 2003-10-01 | 深圳市华夏磁电子技术开发有限公司 | Gear sensor |
| CN101576577A (en) * | 2009-04-24 | 2009-11-11 | 西安易升电子有限公司 | Ceramic capacitive sensor for on-line monitoring |
| CN103529366A (en) * | 2013-09-22 | 2014-01-22 | 华北电力大学 | UHF (Ultra High Frequency) broadband current sensor based on Rogowski coil principle and joint monitoring system |
| CN106199357A (en) * | 2016-07-20 | 2016-12-07 | 国网天津市电力公司 | A kind of recombination current sensor of XLPE power cable in switch cubicle |
| CN109269688A (en) * | 2018-11-07 | 2019-01-25 | 江南大学 | A kind of pressure sensing array and preparation method thereof |
| CN110082656A (en) * | 2019-05-29 | 2019-08-02 | 成都高斯电子技术有限公司 | A kind of method and device thereof of cable aging dealing monitoring |
Non-Patent Citations (1)
| Title |
|---|
| 交联聚乙烯电缆局部放电在线监测系统研制;赵中原, 吕征宇, 段乃欣, 邱毓昌;电力系统自动化(第05期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114577331A (en) | 2022-06-03 |
| CN110967109B (en) | 2022-04-01 |
| CN110967109A (en) | 2020-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103487728B (en) | Measure narrow-band electromagnetic wave signal coupling process and the detection system of GIS partial discharge | |
| CN210037714U (en) | Sleeve grouting compactness detection device based on stress wave method | |
| CN110082656A (en) | A kind of method and device thereof of cable aging dealing monitoring | |
| CN114577331B (en) | Application of sensor preparation liquid in cable defect treatment | |
| CN210487903U (en) | Cable aging treatment and monitoring device | |
| CN111650467A (en) | System and method for testing full-life electromagnetic compatibility of electric tractor | |
| CN110569482A (en) | Method for calculating cable partial discharge fault probability | |
| CN105652149A (en) | Power cable monitoring and early warning operating system | |
| Ji et al. | Research on characteristics of acoustic signal of typical partial discharge models | |
| Qu et al. | Implementation of domino wireless power transfer technology for power grid online monitoring system | |
| CN207007993U (en) | A kind of measuring device with electricity of partial discharge of transformer | |
| CN111520617B (en) | Device and method for monitoring cracking of mortar protective layer of prestressed concrete cylinder pipe based on piezoelectric sensing technology | |
| CN210604862U (en) | Flexible cable partial discharge sensor | |
| CN109709111B (en) | Composite insulator ultra-wideband radio frequency sensing intelligent hardware and use method thereof | |
| US9678027B2 (en) | Monitoring device with jumper cable coupling and related methods | |
| CN109238358B (en) | Distributed electric energy metering box multi-sensor data acquisition and anti-interference processing method | |
| CN110703126A (en) | Intelligent overhead transmission line capable of realizing wire breakage monitoring | |
| CN106652481A (en) | Remote self-powered traffic flow automatic detection device, system and method | |
| CN112557855A (en) | On-line partial discharge shielding type sensor and implementation method thereof | |
| CN1556508A (en) | Pipeline sonic wave digital communicaton technology | |
| Zhang et al. | Research on Integrated Technology of PD Ultrasonic Signal and UHF Signal Detection | |
| CN212514856U (en) | Pre-buried formula capacitive coupling sensor | |
| CN220473613U (en) | Current sensor for pole-mounted switch and pole-mounted switch | |
| CN211718494U (en) | Intelligent overhead transmission line capable of realizing wire breakage monitoring | |
| CN212459922U (en) | Steep wave sensor at outgoing line position of GIL (gate in line) sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |