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251 results about "Composite insulators" patented technology
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AI-based composite insulator internal defect ultrasonic detection method
ActiveCN121068768AAnalysing solids using sonic/ultrasonic/infrasonic wavesProcessing detected response signalComposite insulatorsAlgorithm
The invention relates to the technical field of artificial intelligence, and discloses an AI-based composite insulator internal defect ultrasonic detection method, which comprises a multi-mode ultrasonic probe array module, a signal preprocessing module, an AI defect analysis module, a dynamic parameter optimization module, an edge calculation module and a visual report module, the method comprises the following steps: acquiring a full-dimensional signal through a multi-modal ultrasonic probe array, and inputting the full-dimensional signal into a deep space-time convolutional neural network for defect recognition after adaptive noise reduction and feature fusion; the detection precision is improved by combining dynamic waveform matching and multi-physics coupling analysis; model lightweight and real-time processing are realized by adopting transfer learning and edge calculation. The system integrates the functions of parameter adaptive optimization, three-dimensional visualization and Internet of Things cooperation, solves the problems of low efficiency and high false detection rate of a traditional detection method, and improves the intelligent level and engineering applicability of composite insulator defect detection.
Owner:超创数能科技有限公司 +2
Edge end composite insulator heating defect judgment system, device and method
The invention discloses an edge end composite insulator heating defect judgment system, device and method. The method comprises the following steps: receiving an infrared picture heating detection request from a handle of the unmanned aerial vehicle through an infrared image acquisition module; the model training conversion module is used for training and converting a composite insulator image detection segmentation model; the composite insulator detection module is used for automatically identifying and positioning a target of a composite insulator; the composite insulator segmentation module extracts a complete shape contour of the composite insulator; the composite insulator center line extraction module is used for extracting the center line of a composite insulator core rod; a composite insulator center line temperature fitting extraction module extracts a corresponding temperature value; and the composite insulator heating defect detection module judges the heating condition of the corresponding composite insulator. The method has the beneficial effects that the heating defect identification of the unmanned aerial vehicle infrared picture of the power transmission line at the edge end of the inspection site is realized, and the intelligent and automatic level of the heating defect detection of the composite insulator of the power transmission line is improved.
Owner:ZHEJIANG YUANCHU DATA TECH CO LTD
Composite insulator fault detection method based on YOLOV8
The invention discloses a composite insulator fault detection method based on YOLOV8, and relates to the technical field of graphic data reading, and the method comprises the steps: synchronously collecting an infrared image and a visible light image of a composite insulator, taking the infrared image and the visible light image as dual-mode images, carrying out the cooperative preprocessing, obtaining a registered dual-mode image, and generating a significance hot area graph; constructing an improved target detection network, and inputting the registered bimodal image into the improved target detection network to obtain a detection result of the composite insulator and a pixel-level contour of a fault area; obtaining a final overheating grade based on a physical mechanism diagnosis model, and calculating an intensity loss rate estimated value of a current fault based on a pixel-level contour of a fault area; and generating and outputting a structured diagnosis report based on the fault type, the absolute temperature data matrix, the final overheating level, the strength loss rate estimated value and the fault area pixel level contour. According to the invention, the technical problem of poor detection effect caused by incomplete composite insulator fault detection in the prior art is solved.
Owner:STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER CO
Silicone rubber, preparation method thereof and application of silicone rubber in composite insulator
The invention relates to the technical field of external insulating materials for power equipment, in particular to silicone rubber, a preparation method thereof and application of the silicone rubber in a composite insulator. The silicone rubber is prepared from the following raw materials in parts by weight: 100 parts of methyl vinyl silicone rubber raw rubber, 5-20 parts of hydrophobic silicon dioxide aerogel powder, 3-15 parts of conductive and heat-conducting filler, 10-30 parts of modified aluminum hydroxide, 15-35 parts of fumed silica, 1-3 parts of a silane coupling agent and 2-5 parts of a structuring control agent, 1-4 parts by weight of a low surface energy auxiliary agent, and 0.5-2 parts by weight of a vulcanizing agent. The silicone rubber provided by the invention integrates long-acting hydrophobic anti-icing, active low-power-consumption ice melting and excellent arc ablation resistance, has long-term stability, and is especially suitable for high-voltage insulators in severe environments such as heavy ice areas and heavy dirty areas.
Owner:STATE GRID HUNAN ELECTRIC COMPANY DISASTER PREVENTION & REDUCTION CENT +2
Composite insulator large cluster parachute heating defect judgment interference suppression method
PendingCN121527418ACharacter and pattern recognitionNeural learning methodsPattern recognitionComposite insulators
The invention discloses a composite insulator large cluster parachute heating defect judgment interference suppression method. The system comprises an infrared image acquisition and preprocessing module, a composite insulator target detection and positioning module, a composite insulator temperature field analysis module, a large umbrella group reflection area identification module, a composite insulator central axis reconstruction module and a heating defect intelligent diagnosis and interference suppression module. Complex infrared image analysis is converted into refined analysis of a temperature field and geometric features, and meanwhile, a strategy of combining deep learning and morphology is introduced to improve the precision of target detection and segmentation and ensure the robustness of central axis reconstruction and interference suppression. The method has the beneficial effects that the false alarm rate can be obviously reduced, the detection accuracy of the real heating defect is improved, the result is highly consistent with the interpretation result of an artificial expert, the processing efficiency is high, and the method is suitable for a large-scale unmanned aerial vehicle inspection scene.
Owner:HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD +1
Composite insulator wear degree evaluation method and system based on multi-source information weighted fusion
The invention discloses a composite insulator wear degree evaluation method and system based on multi-source information weighted fusion, and relates to the technical field of power equipment state monitoring. The method mainly comprises the following steps: acquiring a plurality of mechanical and electrical performance parameters representing the wind-sand erosive wear degree of the composite insulator, calculating a weight coefficient of each performance parameter by adopting an entropy weight method, and calculating a comprehensive wear index by utilizing the weight coefficients. And according to the comprehensive wear index, a wear degree grade is established, and quantitative evaluation of the wear state of the composite insulator is realized. According to the invention, the mechanical and electrical performance degradation condition of the insulator can be comprehensively reflected, and a scientific basis is provided for safe operation and maintenance decision of a power grid.
Owner:NORTH CHINA ELECTRIC POWER UNIV +2
Substation unmanned aerial vehicle dual-light inspection route planning method
The invention belongs to the field of intelligent inspection of power equipment, and particularly relates to a transformer substation unmanned aerial vehicle dual-light inspection route planning method. According to the method, original laser point cloud of substation equipment is simplified, an equipment semantic lattice diagram containing high-altitude environment attributes and equipment semantic tags is constructed, dual-light inspection constraint parameters, namely infrared temperature precision and visible light resolution, are analyzed, and a semantic-environment dual-constraint initial route is generated; and flight and dual-light equipment parameters are dynamically adjusted in combination with a high-altitude environment, and routing inspection coverage completeness and data qualification are ensured through semantic weight driven dynamic obstacle avoidance and dual-light data quality closed-loop verification. According to the method, the route coverage is larger than or equal to 99%, the dual-light data qualification rate is larger than or equal to 95%, the redundant route mileage is reduced by 30%, the method is adaptive to a high-altitude transformer substation suspension type porcelain insulator and composite insulator dual-light inspection scene, and high-quality data support is provided for joint detection of insulator infrared thermal defects and visible light surface defects.
Owner:HAIBEI POWER SUPPLY COMPANY STATE GRID QINGHAI ELECTRIC POWER +1
Method for detecting water absorption rate of silicone rubber by combining near infrared spectrum with CPO-SVM
PendingCN121275684AChemical property predictionKernel methodsComposite insulatorsDestructive sampling
The invention discloses a method for detecting the water absorption rate of silicone rubber by combining near infrared spectroscopy with CPO-SVM, and belongs to the technical field of detection of high- The invention aims to solve the problems of destructive sampling, complex operation, sensitivity interference, strong subjectivity of indirect evaluation and the like in the traditional detection method. The method comprises the following steps: firstly, obtaining a composite insulator silicone rubber sample, and collecting near infrared spectrum data of the composite insulator silicone rubber sample; then, carrying out standard normal variable transformation pretreatment on the spectroscopic data to eliminate interference caused by physical property difference on the surface of the sample; then, accurately extracting a key wavelength from the high-dimensional spectral data by using a competitive self-adaptive reweighting algorithm; and finally, establishing a support vector machine model optimized by a crown porcupine optimization algorithm, and carrying out quantitative analysis on the water absorption rate of the silicone rubber. According to the method, rapid, accurate and nondestructive detection of the water absorption rate of the silicone rubber is realized, real-time and reliable data support is provided for operation and maintenance of a high-voltage insulating material, safe and stable operation of a power grid is effectively guaranteed, and the method has a wide application prospect.
Owner:CHINA THREE GORGES UNIV
Insulator quality detection device with intelligent clamping function
The invention discloses an insulator quality detection device with an intelligent clamping function, and relates to the technical field of electric power equipment detection.The insulator quality detection device comprises a detection box, a driving unit, an anti-movement unit, an intelligent clamping unit and a composite insulator, and the detection box is used for installing and fixing the driving unit, the anti-movement unit, the intelligent clamping unit and the composite insulator; the driving unit is used for providing torsional force, the anti-movement unit is used for preventing axial movement of the composite insulator in the test process, the intelligent clamping unit is used for clamping the composite insulator, and after the composite insulator is clamped and fixed through the intelligent clamping unit, the torsional force is provided through the driving unit for torsion test. Through the anti-play unit, the composite insulator is prevented from axial play in the rotation process, and the situation that the axial play introduces extra friction force and changes the stress state, and consequently the measured torque value is not pure, and the test result is not accurate is avoided.
Owner:GUO WANG ZHE JIANG SHENG DIAN LI YOU XIAN GONG SI CI XI SHI GONG DIAN GONG SI
Hollow composite insulator convenient to install
The utility model discloses a hollow composite insulator convenient to install, and relates to the field of hollow composite insulator devices, the hollow composite insulator comprises a hollow composite insulator main body and a support frame, and the hollow composite insulator main body is fixedly installed at the top of the support frame through an installation assembly. According to the hollow composite insulator, the supporting plate is installed at the bottom of the hollow composite insulator body, the contact area between the bottom of the hollow composite insulator body and the supporting frame can be increased through the supporting plate, the force distribution can be more uniform by increasing the contact area between the hollow composite insulator body and the supporting frame, and the connection stability is enhanced; when the core rod is subjected to external force, the force can be better transmitted to the supporting frame through the supporting plate, the situation that local pressure of the hollow composite insulator body is too large can be reduced through the supporting plate, and deformation or damage caused by local stress concentration of the hollow composite insulator body and the supporting frame is avoided. And the strength of the hollow composite insulator after integral installation is improved.
Owner:YANCHENG PINGGUAN HIGH VOLTAGE ELECTRIL CO LTD
Method for preparing silicon dioxide microspheres by utilizing decommissioned composite insulator silicone rubber through pyrolysis method
The invention belongs to the technical field of power equipment resource recycling, and particularly relates to a method for preparing silicon dioxide microspheres by using retired composite insulator silicone rubber through a pyrolysis method. The method provided by the invention comprises the following steps: soaking retired composite insulator silicone rubber in liquid nitrogen, and grinding at low temperature to obtain low-temperature ground silicone rubber; carrying out pyrolysis on the silicone rubber subjected to low-temperature grinding to obtain a silicon dioxide microsphere precursor in a rheological environment; the preparation method comprises the following steps: carrying out three-stage cooling and collision growth on a silicon dioxide microsphere precursor in a rheological environment, and re-sintering an obtained product to obtain the silicon dioxide microspheres, the particle size of the silicon dioxide microspheres is 800 nm to 3 microns. The method provided by the invention not only can realize resource reutilization of the decommissioned composite insulator silicone rubber, but also can obtain the high-performance (high sphericity and high purity) silicon dioxide microspheres, and provides a simple and convenient method for preparing the high-performance silicon dioxide microspheres.
Owner:CHONGQING UNIV
U-shaped groove fitting earhole drilling device for composite insulator
The embodiment of the utility model provides a U-shaped groove fitting earhole drilling device for a composite insulator, which comprises a bottom plate, a positioning mechanism, a jacking mechanism and a drilling template, the positioning mechanism comprises a positioning block and a cushion block, the positioning block is supported at the front part of the bottom plate, and the inner side of the positioning block is provided with a positioning groove matched with the tail part of a U-shaped groove fitting to be processed; the cushion block is arranged on the bottom plate, and the distance between the cushion block and the positioning block is matched with the distance between the tail part and the front lug part of the U-shaped groove fitting to be processed; the jacking mechanism comprises a V-shaped block and a jacking air cylinder, a V-shaped opening of the V-shaped block is matched with the front lug part of the U-shaped groove fitting to be machined, and the telescopic end of the jacking air cylinder is connected to the rear end of the V-shaped block; the drill plate is supported on the bottom plate and located over the cushion block, and a drill hole is formed in the center of the drill plate. By adopting the technical scheme, the lug hole drilling process of the U-shaped groove fitting can be optimized, the production efficiency is improved, the production cost is reduced, and the product quality is improved.
Owner:HENAN JINGWEI ELECTRIC POWER TECH
Voltage-sharing insulator for environment-friendly gas insulation cabinet
The invention discloses a voltage-sharing insulator for an environment-friendly gas insulation cabinet, which comprises an insulation layer, a first insert and a second insert, the first insert is arranged at the first end of the insulation layer, the second insert is arranged at the second end of the insulation layer, and the axis of the first insert and the axis of the second insert coincide with the axis of the insulation layer. Each of the first insert and the second insert comprises a spherical end and a connecting end, the spherical ends of the first insert and the second insert are completely embedded into the insulating layer, and the connecting ends extend out of the insulating layer. The composite insulator is excellent in insulation performance, and has transmission, voltage-sharing and shielding functions besides the basic functions of a traditional insulator.
Owner:SCHNEIDER ELECTRIC XIAMEN SWITCHING DEVICE CO LTD
Optical fiber composite insulator sample and preparation method thereof, partial discharge test system and method
The application belongs to the field of power devices, and discloses an optical fiber composite insulator sample, a preparation method thereof, a partial discharge test system and a method, which comprise a transparent shell, a filling paste injection hole is formed in the transparent shell, a first optical fiber passing hole and a second optical fiber passing hole are respectively formed at two ends of the transparent shell, an optical fiber, one end of the optical fiber passes through the first optical fiber passing hole and the second optical fiber passing hole in sequence, and a filling paste, the filling paste is filled in the transparent shell through the filling paste injection hole, and a cavity with a preset structure is arranged in a preset region between the filling paste and the optical fiber. A simulation structure simulating a core rod of an optical fiber composite insulator is formed through the transparent shell, the optical fiber and the filling paste, partial discharge tests can be carried out under laboratory conditions, not only discharge signals can be detected, but also a partial discharge process can be visually observed, and the problem that the existing optical fiber composite insulator cannot be directly used for laboratory partial discharge tests can be effectively solved.
Owner:WUHAN UNIV +2
Novel line column type composite insulator
The utility model discloses a novel line column type composite insulator, which comprises a fixed core body, a high-voltage end head is arranged at the top end of the fixed core body, an adhesive film is arranged at the joint of the high-voltage end head and a fixed umbrella cover, and the high-voltage end head and the fixed core body are fixedly adhered through the adhesive film. The bottom end of the fixed core body is sleeved with a metal accessory in a compression joint mode, a threaded connector is formed in the bottom end of the metal accessory, the metal accessory is in threaded connection with a screw assembly through the threaded connector, the outer side of the fixed core body is sleeved with a fixed umbrella cover, and part of the metal accessory is wrapped by the bottom end of the fixed umbrella cover. And the fixed umbrella cover integrally wraps the high-voltage end socket at the upper end. According to the utility model, the electrical performance of a product can be effectively improved, the creepage distance of the product is reasonably and effectively increased, the anti-pollution flashover capability of the insulator is greatly improved, the normal service life of the insulator can be effectively ensured, and the production efficiency of the product is improved.
Owner:DALIAN INSULATOR GRP T&D CO LTD
Method and system for enhancing interface performance of optical fiber composite insulator
The invention discloses a method and a system for enhancing the interface performance of an optical fiber composite insulator. The method comprises the following steps: firstly, introducing a polar functional group on the surface of an optical fiber through plasma pretreatment and forming micro-etching; then coating a nano SiO2 transition layer on the surface of the optical fiber by adopting a sol-gel method; and finally, implanting the treated optical fiber into a composite core matrix material containing a silane coupling agent, and curing and molding. Through the synergistic effect of physical anchoring and chemical bonding, the interface bonding strength between the optical fiber and the core body is remarkably enhanced, the tensile strength of the composite material is improved from 35.096 MPa to 52.117 MPa, the bending strength of the composite material is improved from 60.124 MPa to 78.946 MPa, meanwhile, the breakdown strength is remarkably improved, the leakage current is remarkably reduced, the interface electric field distribution is effectively improved, and the service life of the composite material is prolonged. And the mechanical performance, the electrical insulation performance and the long-term operation reliability of the optical fiber composite insulator are improved.
Owner:NORTH CHINA ELECTRIC POWER UNIV +2
Lightweight high-strength corrosion-resistant composite insulated electric pole and preparation method thereof
The invention discloses a light high-strength corrosion-resistant composite insulated electric pole and a preparation method thereof, and belongs to the technical field of power transmission facilities. The electric pole is of a conical hollow structure, and an inner tough layer, a structural layer and an outer protective layer are sequentially compounded on a wall layer from inside to outside. The inner tough layer is made of a hyperbranched polyester modified epoxy vinyl ester-glass fiber composite material, so that the electric pole is endowed with excellent bending resilience performance; the structural layer is made of S glass fiber and T700 carbon fiber hybrid reinforced epoxy resin, so that high strength and rigidity are ensured; the outer protective layer is a fluorinated polyurethane / boron nitride composite coating, and provides long-acting weather resistance, corrosion resistance and insulation protection. According to the invention, through collaborative design of multi-layer materials and an integrated forming process, light weight, high mechanical strength, excellent insulativity and recoverability after bending of the electric pole are realized, and the electric pole is suitable for electric power line construction in a harsh environment.
Owner:STATE GRID GANSU ELECTRIC POWER CO LANZHOU POWER SUPPLY CO
Glue binding machine
The utility model discloses a cementing machine which is used for cementing a composite insulator, the cementing machine comprises an electric cylinder device, a main body frame, a first heating device, a second heating device, a first supporting device, a second supporting device and a pressure device, and the electric cylinder device is located outside the main body frame and used for providing power for the cementing machine; the first heating device, the first supporting device and the second heating device are movably and sequentially arranged on the main body frame at intervals in the first direction, and the first supporting device is located between the first heating device and the second heating device and used for supporting an insulator; the second supporting device is fixedly connected to the main body frame, located between the first supporting device and the second heating device and used for supporting the conducting rod, and the pressure device is used for applying pressure to the first heating device and the second heating device.
Owner:JIANGSU SHENMA ELECTRIC CO LTD
Composite insulator abnormal heating area detection method based on Raman spectrum
PendingCN122016074ARaman scatteringThermometers using physical/chemical changesComposite insulatorsStatistical analysis
The invention relates to the technical field of composite insulator detection, and particularly discloses a Raman spectrum-based method for detecting an abnormal heating area of a composite insulator, which is suitable for a composite insulator with a silicone rubber sheath dyed by using ferric oxide as a pigment. The method comprises the following steps: firstly, selecting a to-be-detected sample, and performing spectrum acquisition on a to-be-detected area on the surface of the silicone rubber sheath by using a Raman spectrometer without applying operating voltage; then processing the spectral data, respectively extracting the characteristic peak intensities of ferric oxide in Raman shift ranges at 223 + / -8cm and 292 + / -12cm, and calculating the ratio of the two characteristic peak intensities; the obtained ratio is compared with a preset threshold value, whether an abnormal heating history exists in the to-be-detected area in the network hanging operation period or not is judged, and the preset threshold value is determined through establishment of a standard sample library and statistical analysis. The detection result is objective and is not interfered by electric field and environmental factors.
Owner:ANHUI UNIV +1
Electric power insulator with transportation protection device
PendingCN121448721AContainers to prevent mechanical damageInternal fittingsComposite insulatorsCoil spring
The invention relates to the technical field of electric power facilities, and discloses an electric power insulator with a transportation protection device, which comprises a package type storage mechanism and two buffer type limiting mechanisms, the clamping plates are used for clamping the two ends of the lower foam box and the two ends of the upper foam box in an abutting mode, the first spiral springs can conduct first-stage elastic buffering on the clamping plates, and the second spiral springs can conduct second-stage elastic buffering on the clamping plates. According to the electric power insulator with the transportation protection device, firstly, an external protection function can be provided for the composite insulator, secondly, dead-corner-free contact with the composite insulator can be realized, so that the effective contact area between the electric power insulator and the composite insulator is increased, the unit stress pressure intensity of the composite insulator after collision is reduced, and the safety of the electric power insulator is improved. And the stability and the safety of the composite insulator in the transportation process are improved.
Owner:HUBEI FENGYANG CONSTRUCTION ENGINEERING CO LTD
Composite porcelain insulator string
PendingCN121617752ASuspension/strain insulatorsSupporting insulatorsComposite insulatorsMechanical stability
The invention discloses a composite porcelain insulator string, and belongs to the technical field of power equipment. The insulator string is mainly formed by compounding an end hardware fitting, a core rod and a porcelain piece sleeved on the core rod. The core is that the fittings are crimped at two ends of the core rod for connection; the core rod is used as a bearing and internal insulation main body; the porcelain piece is provided with the hollow pipe and the umbrella skirts, and the porcelain piece and the core rod are glued into a whole through the insulation paste, so that the creepage distance is effectively increased, the core rod is protected from environmental erosion, and aging and brittle failure of the core rod are prevented. The composite insulator combines the advantages of good mechanical stability of a porcelain insulator and strong bearing capacity of a composite insulator, has excellent electromechanical performance and long-term operation reliability, and is particularly suitable for an ultra-high voltage transmission line.
Owner:QINGDAO UNIV OF TECH
Direct-current composite insulator umbrella cover with double-gradient structure, preparation process and composite insulator
The invention relates to the technical field of high-voltage direct-current power transmission equipment, and discloses a direct-current composite insulator umbrella cover with a double-gradient structure, a preparation process and a composite insulator, the umbrella cover is of a three-layer composite structure, and the umbrella cover sequentially comprises a high-resistivity inner layer, a high-dielectric middle layer and a micro-conductive outer layer from inside to outside; the volume resistivity of the high-resistivity inner layer is larger than 1 * 10 < 13 > omega.m, and the thickness of the high-resistivity inner layer is 10%-20% of the total thickness of The volume resistivity of the high-dielectric middle layer is 1 * 10 < 10 >-1 * 10 < 12 > omega.m, the relative dielectric constant is 15-25, and the thickness of the high-dielectric middle layer is 60%-80% of the total thickness of the umbrella cover; the volume resistivity of the micro-conductive outer layer is 1 * 10 < 8 >-1 * 10 < 10 > omega.m, the relative dielectric constant is 5-8, and the thickness is 5%-20% of the total thickness of the umbrella cover. The technical problems that an existing epoxy hard composite insulator umbrella cover is uneven in electric field distribution and surface charges are prone to accumulation can be solved, and automatic regulation and control of the electric field in the insulator body and rapid discharge of the surface charges are achieved.
Owner:DALI BUREAU OF ULTRA HIGH VOLTAGE TRANSMISSION CO CHINA SOUTHERN POWER GRID CO LTD
Lightning protection device for OPGW distribution line and use method thereof
ActiveCN115603260BImprove adjustment efficiencyOverhead installationDischarge by conduction/dissipationComposite insulatorsStructural engineering
The application discloses an OPGW distribution line lightning attracting protection device and a use method thereof, wherein the device comprises a composite insulator umbrella skirt, a lightning attracting rod fixed on the composite insulator umbrella skirt, a lightning guiding rod matched with the lightning attracting rod and a connecting mechanism. The connecting mechanism comprises an adjusting assembly. The adjusting assembly comprises an insulating porcelain seat fixedly connected at the bottom end of the composite insulator umbrella skirt. A U-shaped guide rail is fixedly connected to the side surface of the insulating porcelain seat. An end seat is movably connected to the inner side of the U-shaped guide rail, and clamping grooves are formed in the two sides of the inner wall of the U-shaped guide rail. Clamping edges are arranged on the two sides of the surface of the end seat. The two clamping edges are slidably connected in the same side clamping groove, and the connection between the clamping edges and the clamping groove is lockable. The lightning guiding rod is fixedly connected to the end seat. In use, the connection between the clamping plate and the clamping groove is only unlocked, and then the gap distance between the lightning guiding rod and the lightning attracting rod can be adjusted by pushing the end seat to move, so that the adjusting efficiency is better than that of continuous screwing adjustment.
Owner:GUANGDONG DIANWANG GONGSI YUNFU POWER SUPPLY BUREAU +1
Htv silicone rubber material and its use
The application discloses an HTV silicone rubber material and application thereof, and the HTV silicone rubber material comprises the following components in parts by weight: methyl vinyl silicone rubber 100 parts; reinforcing agent 25-40 parts; aluminum hydroxide 70-90 parts; and other additives 11-23 parts. The HTV silicone rubber material is prepared by compounding the specific content of the methyl vinyl silicone rubber, the reinforcing agent and the specific content of the compounding aluminum hydroxide with different particle sizes and surface activities, and supplemented by the specific content of the other additives. Compared with the existing HTV silicone rubber material applied to the extra-high voltage composite insulator under high humidity and heat working conditions, the glue content of the prepared HTV silicone rubber material is obviously improved, the water absorption and dielectric loss are obviously reduced, the wet heat aging resistance is excellent, and the abnormal heating phenomenon of the extra-high voltage composite insulator under high humidity and heat working conditions is effectively prevented.
Owner:TSINGHUA SHENZHEN INTERNATIONAL GRADUATE SCHOOL
Composite insulator aging evaluation method based on nuclear magnetic resonance transverse relaxation time spectrum
PendingCN120908237AAnalysis using nuclear magnetic resonanceComposite insulatorsNMR - Nuclear magnetic resonance
The invention relates to the technical field of power equipment operation inspection, in particular to a nuclear magnetic resonance transverse relaxation time spectrum-based composite insulator aging evaluation method, which comprises the following steps of: measuring a composite insulator sample by using a nuclear magnetic resonance spectrometer to obtain a transverse relaxation time distribution T2 spectral line of the sample, and extracting key characteristic parameters; and establishing a mapping relation model of the characteristic parameters and the aging degree, calculating an aging index, and realizing evaluation of the aging degree of the composite insulator and judgment of aging factors. According to the method, starting from the change of the microstructure of the material, the aging degree is represented through the nuclear magnetic resonance signal, the signal abnormity at the initial stage of aging can be detected when the appearance of the insulator has no obvious change, and an earlier basis is provided for formulating a maintenance strategy.
Owner:DALIAN POWER SUPPLY COMPANY STATE GRID LIAONING ELECTRIC POWER
Insulator and production process thereof
The invention belongs to the field of insulator production, and particularly relates to an insulator and a production process thereof, and the method comprises the following steps: 1, preparing a silica gel material; 2, installing fittings at the two ends of the core tube; 3, wrapping the core tube by using the silica gel material in the step 1, and exposing the hardware fittings at the two ends to the outside; 4, placing the core tube wrapped with the silica gel material into a production device; step 5, extruding the silica gel material through a production device, so that the silica gel material is molded into an umbrella skirt to coat the core tube, and a semi-finished product of the composite insulator is obtained; 6, waste materials overflowing in the extrusion process are removed through a production device; and 7, controlling the semi-finished product of the composite insulator to rotate by using a production device, and removing the silica gel material adhered between the umbrella skirts to obtain a finished product of the composite insulator. According to the method, the silica gel material adhered between the umbrella skirts can be automatically removed, manual removal is not needed, and the production efficiency of the composite insulator is further improved.
Owner:栾瑞海
Composite insulator capable of rapidly replacing core rod
Owner:LILING PUKOU ELECTRIC PORCELAIN MFG CO LTD
Hollow composite insulator for ultrahigh-voltage high-capacity iron core test reactor
The utility model discloses a hollow composite insulator for an ultrahigh-voltage large-capacity iron core test reactor, which comprises an insulating tube and an umbrella cover, the umbrella cover is of a sectional structure and is integrally formed on the insulating tube, annular grooves which are arranged at intervals are arranged on the outer wall of the insulating tube, tooth-shaped grooves are arranged on the groove walls of the annular grooves, and the tooth-shaped grooves are communicated with the umbrella cover. The two adjacent umbrella covers are arranged in the annular groove after being formed and spliced, and the two umbrella covers and the tooth-shaped grooves in the groove walls of the corresponding sides of the annular groove are solidified into a whole. According to the utility model, the outer wall of the insulating tube is provided with the annular groove, and when the umbrella cover is subjected to injection molding, part of silicone rubber flows into the annular groove and is solidified with the tooth-shaped groove to form a whole, so that the combination effect between the umbrella cover and the adjacent umbrella cover and between the umbrella cover and the insulating tube can be effectively ensured, and the sealing is ensured; and matched step surfaces are arranged at the joint of two adjacent umbrella covers, so that the combination effect is further ensured.
Owner:NANJING JIERUI NEW MATERIAL TECH CO LTD
Anti-pollution flashover composite insulator with optimized umbrella skirt structure
The invention belongs to the technical field of insulators, and discloses an anti-pollution flashover umbrella skirt structure optimized composite insulator which comprises an insulating core rod and a plurality of umbrella skirt units arranged on the insulating core rod in a sleeving mode, each umbrella skirt unit comprises a main umbrella skirt body and an auxiliary umbrella skirt body, and an annular pollution dredging and flow guiding inclined face is arranged on the upper umbrella face of each main umbrella skirt body. The radial inclination angle of the sewage draining and flow guiding slope is gradually increased in a gradient manner outwards along the radial direction of the umbrella body; the edge of the lower umbrella surface of the main umbrella skirt body is provided with an annular arc-resisting rib; the arc cutting fracture structures cut off the circumferential development path of an electric arc, the annular arc blocking ribs lengthen the creepage path of the electric arc, meanwhile, the arc cutting fractures of the upper and lower adjacent main umbrella skirt bodies are distributed in a staggered mode, axial through of the electric arc is eradicated, the arc extinguishing probability is remarkably improved, and the arc extinguishing effect is improved. And pollution flashover is thoroughly inhibited, and the device is suitable for severe working conditions such as counter-weight pollution and rainstorm.
Owner:HEBEI JINCHANGSHENG ELECTRICAL EQUIPMENT CO LTD
A method and device for detecting the aging state of a composite insulator
ActiveCN115855711BColor/spectral properties measurementsInvestigating material hardnessComposite insulatorsInformation acquisition
The application discloses a kind of composite insulator aging state detection method and equipment, the method comprises: obtaining composite insulator sample set;Wherein, composite insulator sample set includes multiple composite insulator data, each composite insulator data includes first surface color difference information, first surface hardness information and first aging information;With first aging information as dependent variable, first surface color difference information and first surface hardness information as independent variable, composite insulator sample set is carried out multiple linear fitting, obtains composite insulator characteristic information;Obtain the second surface color difference information and second surface hardness information of composite insulator to be detected;Second aging information of composite insulator to be detected is determined based on second surface color difference information, second surface hardness information and composite insulator characteristic information.The method is used, after obtaining composite insulator characteristic information, the color difference data and hardness data of insulator are collected, the evaluation of aging state is completed, and the operation process of detection is greatly simplified.
Owner:GUANGDONG POWER GRID CO LTD +1