Patents
Literature
92 results about "Electric breakdown" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
High-temperature-resistant, high-voltage-resistant and anti-breakdown capacitor base film and preparation method thereof
The invention discloses a high-temperature-resistant, high-voltage-resistant and anti-breakdown capacitor base film and a preparation method thereof. The high-temperature-resistant, high-voltage-resistant and anti-breakdown capacitor base film is prepared from the following raw materials in parts by weight: 100 parts of polypropylene; 17 to 36 parts of polyvinylidene fluoride; 3-12 parts of enhanced and improved talcum powder; 1-6.5 parts of modified barium titanate; 1-6 parts of a cross-linking agent; 2-10 parts of a compatilizer; and 0.05-2 parts of an initiator. The capacitor base film is high in mechanical strength, and has excellent high temperature resistance, thermo-oxidative aging resistance, high voltage resistance and anti-breakdown performance; the enhanced and improved talcum powder is constructed by taking expanded layer modified talc as a carrier and titanium dioxide-carbon dot composite particles as a loading component and grafting and coating the organic matter, so that the defects of the talcum powder can be overcome, and the improvement effect of the talcum powder on heat resistance, high-voltage resistance and breakdown resistance can be fully exerted; meanwhile, the system can be endowed with excellent thermo-oxidative aging resistance.
Owner:扬州博恒新能源材料科技有限公司
Calculation method for vacuum circuit breaker closing electric breakdown multi-physics coupling simulation
PendingCN120893259ADesign optimisation/simulationSpecial data processing applicationsElectrical field strengthElectric breakdown
The invention discloses a vacuum circuit breaker closing electric breakdown multi-physical field coupling simulation calculation method, which comprises the following steps of: performing simulation analysis on an electric field on the surface of a single micro-bulge by constructing a geometric model of a micro-bulge on the surface of a contact of a vacuum circuit breaker to obtain the electric field intensity of the micro-bulge surface and the current density of field emission in the closing process of the vacuum circuit breaker; the critical opening range of field emission is determined; obtaining metal vapor pressure distribution characteristics of the contact material at different moments by taking a critical opening range of field emission as an initial condition; and according to the metal vapor pressure distribution characteristics, obtaining the electron density in the breakdown process of the vacuum circuit breaker so as to determine the evolution rule of the microcosmic plasma parameters and obtain the closing breakdown characteristics. According to the method, the electric breakdown characteristics under different contact surface structures can be accurately analyzed, and an initial plasma condition can be provided for pre-breakdown equilibrium arc modeling, so that the modeling precision is greatly improved.
Owner:DALIAN UNIV OF TECH +2
Preparation method of high-performance electric-breakdown-resistant capacitor base film
The invention discloses a preparation method of a high-performance electric-breakdown-resistant capacitor base film, which comprises the following steps: S1, preparing modified polypropylene master batch: mixing polypropylene, a cycloolefin copolymer, a barium titanate-carbon nanotube modified composite filler and an antioxidant, and carrying out melt blending, extrusion and granulation to obtain the modified polypropylene master batch; s2, carrying out melt extrusion on the modified polypropylene master batch, cooling and casting; s3, carrying out two-way stretching and heat setting on the obtained casting piece to obtain a polypropylene film; and S4, performing plasma treatment on the surface of the polypropylene film to obtain the high-performance electric-breakdown-resistant capacitor base film. The high-performance electric-breakdown-resistant capacitor base film prepared by the method has excellent electric breakdown resistance, mechanical strength, flame retardance and heat resistance, has a long-acting flame retardant effect, is excellent in comprehensive performance and has a wide market application prospect.
Owner:扬州博恒新能源材料科技有限公司
Block metal ore grade online analysis method based on high-voltage pulse discharge breakdown spectroscopy
PendingCN120741433AAnalysis by electrical excitationAnalysis by thermal excitationVoltage pulseElectric breakdown
The invention provides a bulk metal ore grade online analysis method based on high-voltage pulse discharge breakdown spectroscopy, which comprises the following steps: (a) placing bulk metal ore particles in a high-voltage discharge electrode system filled with a liquid insulating medium, and applying 30-250kV voltage through a high-voltage electric pulse generator to carry out pulse discharge, carrying out electric breakdown on the ore particles and generating plasmas; (b) synchronously acquiring a plasma characteristic spectrum signal and a voltage waveform signal and a current waveform signal of pulse discharge in the electric breakdown process; (c) preprocessing the characteristic spectral signal, determining element types according to the wavelength of a characteristic spectral line, and extracting the intensity of the characteristic spectral line; and (d) inputting the characteristic spectral line intensity, the pulse discharge waveform parameter, the discharge condition and the ore particle property into a pre-established quantitative analysis model, and outputting the metal element grade of the ore particles.
Owner:FUZHOU UNIV
Preparation method of heat-resistant, flame-retardant and electric breakdown-resistant modified polypropylene capacitor base film
The invention discloses a preparation method of a heat-resistant, flame-retardant and electric-breakdown-resistant modified polypropylene capacitor base film. The preparation method comprises the following steps: S1, preparing composite intercalation organic montmorillonite and microcapsule type reinforced particles; s2, preparing a modified polypropylene master batch: mixing the polypropylene master batch, the composite intercalated organic montmorillonite, the microcapsule type reinforced particles, an initiator and an auxiliary agent, heating and stirring to obtain the modified polypropylene master batch; s3, adding polyvinylidene fluoride into the premix, heating and stirring, and carrying out melt extrusion on the obtained mixture; s3, cooling the casting piece; s4, biaxial stretching, heat setting, cooling and corona treatment are carried out, and the heat-resistant, flame-retardant and electric-breakdown-resistant modified polypropylene capacitor base film is obtained. The polypropylene is filled and modified through the composite intercalation organic montmorillonite and the microcapsule type reinforced particles, and the polyvinylidene fluoride is compounded and added, so that the heat resistance, flame retardance, electric breakdown resistance and mechanical strength of the polypropylene capacitor base film can be comprehensively improved.
Owner:扬州博恒新能源材料科技有限公司
Water and electric shock resistant PVC insulating electrical tape and its preparation method
ActiveCN120924175BNon-macromolecular adhesive additivesFilm/foil adhesive primer layersAdhesive cementPolymer science
The application discloses a kind of water-resistant and electric breakdown-resistant PVC insulating electrician adhesive tape and preparation method thereof, and relates to the technical field of insulating electrician adhesive tape.The water-resistant and electric breakdown-resistant PVC insulating electrician adhesive tape includes PVC film layer and adhesive layer arranged on one surface thereof;The adhesive layer includes primer layer directly contacting the PVC film layer and pressure-sensitive adhesive layer arranged on the other surface of the primer layer.The PVC film layer includes the following raw material components: 50 parts of PVC resin, 10-15 parts of insulating filler, 15-20 parts of toughening agent, 2-4 parts of heat stabilizer, 0.25-0.75 parts of lubricant and 0.5-1.5 parts of antioxidant by weight fraction;The primer layer includes the following raw material components: 50 parts of acrylate monomer, 6-8 parts of unsaturated acid, 2-3 parts of photoinitiator and 0.5-1 part of antioxidant by weight fraction.
Owner:DONGGUAN YIZHOU ADHESIVE PROD CO LTD
10KV indoor emergency access equipment
ActiveCN223843304UBus-bar/wiring layoutsSecuring/insulating coupling contact membersElectric breakdownStructural engineering
Owner:ZHEJIANG SIJI TECH SERVICE CO LTD
Cylindrical battery cell, battery device and electric device
PCT designated stageWO2026081225A1Electrolyte accumulators manufactureElectrical batteryElectric breakdown
The present application belongs to the technical field of batteries. Provided are a cylindrical battery cell, a battery device and an electric device. The cylindrical battery cell comprises a casing, an electrode terminal, an electrode assembly, a sealing member and a first insulating member. The electrode terminal is arranged on a wall portion of the casing. The electrode assembly comprises a main body portion and a first tab, wherein the first tab is arranged at one end of the main body portion in a protruding manner and is electrically connected to the electrode terminal. The sealing member comprises a first sealing portion located between the wall portion and a first limiting portion of the electrode terminal, and the first sealing portion extends beyond the first limiting portion in a direction away from a central axis of the cylindrical battery cell. The first insulating member comprises a first insulating portion arranged between the wall portion and the first tab, wherein the first insulating portion is formed with a through hole, and the first sealing portion is arranged in the through hole and forms a first gap with a hole wall surface of the through hole. A clearance portion is provided on a first surface of the first tab facing the wall portion, and a projection of the wall portion corresponding to an exposed area of the first gap is located in the clearance portion, so as to reduce the risk of electrical breakdown between the first tab and the wall portion.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Preparation method of modified polypropylene capacitor base film resistant to heat, flame and electric breakdown
This invention discloses a method for preparing a heat-resistant, flame-retardant, and electrically breakdown-resistant modified polypropylene capacitor base film, comprising the following steps: S1, preparing composite intercalated organic montmorillonite and microcapsule-type reinforcing particles; S2, preparing modified polypropylene masterbatch: mixing polypropylene masterbatch, composite intercalated organic montmorillonite, microcapsule-type reinforcing particles, initiator, and additives, heating and stirring to obtain modified polypropylene masterbatch; S3, adding polyvinylidene fluoride to the premix, heating and stirring, and melting and extruding the resulting mixture; S4, cooling and casting; S5, biaxial stretching, heat setting, cooling, and corona treatment to obtain a heat-resistant, flame-retardant, and electrically breakdown-resistant modified polypropylene capacitor base film. This invention, by filling and modifying polypropylene with composite intercalated organic montmorillonite and microcapsule-type reinforcing particles, and by compounding with polyvinylidene fluoride, comprehensively improves the heat resistance, flame retardancy, electrical breakdown resistance, and mechanical strength of the polypropylene capacitor base film.
Owner:扬州博恒新能源材料科技有限公司
Cylindrical battery cell, battery apparatus, and electrical apparatus
The present application belongs to the technical field of batteries, and provides a cylindrical battery cell, a battery apparatus, and an electrical apparatus. The cylindrical battery cell comprises a housing, an electrode terminal, an electrode assembly, a sealing member, a first insulating member, and a second insulating member. The electrode terminal is disposed on a wall portion of the housing. The electrode assembly comprises a main body portion and a first tab, the first tab being provided at one end of the main body portion and being electrically connected to the electrode terminal. The sealing member comprises a first sealing portion located between the wall portion and a first limiting portion of the electrode terminal, and the first sealing portion extends beyond the first limiting portion in a direction away from the central axis of the cylindrical battery cell. The first insulating member comprises a first insulating portion provided between the wall portion and the first tab, the first insulating portion is provided with a through hole, and the first sealing portion is located within the through hole and forms a first gap with a hole wall surface of the through hole. The second insulating member is located between the wall portion and the first tab, and the projection of the second insulating member in the thickness direction of the wall portion covers at least part of the first gap, so as to reduce the risk of electrical breakdown between the first tab and the wall portion.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Electric energy metering sensor fixing device for image recognition
The invention relates to an electric energy metering sensor fixing device for image recognition, and belongs to the technical field of electric energy metering. The electric energy metering sensor fixing device for image recognition comprises a mounting base, the top of the mounting base is fixedly connected with uniformly distributed threaded mounting parts, a mounting cavity is formed in the side end of the mounting base, and a safety monitoring mechanism is mounted in the mounting cavity; real-time state sensing and early warning are realized through a detection assembly in the safety monitoring mechanism, and a wireless main control chip cooperates with an image sensor and an inertial measurement unit to perform multi-angle image acquisition and vibration attitude monitoring on a current transformer body and a connection part. And the edge side intelligent analysis can identify the abnormities such as physical damage, electric breakdown traces, installation looseness and the like, timely triggers multi-level alarm, effectively avoids metering failure and troubleshooting lag, and meets the high reliability requirement of an intelligent power grid.
Owner:MARKETING SERVICE CENT OF STATE GRID LIAONING ELECTRIC POWER CO LTD +2
Cylindrical battery monomer, battery device and power utilization device
ActiveCN223487165USmall-sized cells cases/jacketsElectric connector introductionElectrical batteryElectric breakdown
The utility model provides a cylindrical battery monomer, a battery device and a power utilization device, and belongs to the technical field of batteries. The cylindrical battery cell includes a housing, an electrode terminal, an electrode assembly, a seal, and a first insulator. The electrode terminal is provided on a wall portion of the case. The electrode assembly comprises a main body part and a first tab; the first tab is convexly arranged at one end of the main body part and is electrically connected with the electrode terminal; the sealing piece comprises a first sealing part positioned between the wall part and the first limiting part of the electrode terminal; the first sealing part exceeds the first limiting part in the direction deviating from the central axis of the cylindrical battery monomer. The first insulating part comprises a first insulating part arranged between the wall part and the first tab, the first insulating part is provided with a through hole, the first sealing part is arranged in the through hole, and a first gap is formed between the first sealing part and the hole wall surface of the through hole. The first surface, facing the wall part, of the first tab is provided with an avoiding part, and the projection, corresponding to the exposed area of the first gap, of the wall part is located in the avoiding part, so that the risk of electric breakdown of the first tab and the wall part is reduced.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Preparation method of voltage breakdown-resistant anti-corrosion functional filler
The invention discloses a preparation method of a voltage-breakdown-resistant anticorrosive functional filler, and belongs to the field of preparation of coating fillers. The boron nitride nanosheet is subjected to surface amination modification, then zinc molybdate grows in situ, finally, ester compound hydrolytic condensation is utilized for surface treatment, and the composite filler with multiple functions of physical shielding, efficient insulation and active corrosion inhibition is successfully constructed. According to the method, not only can the dispersity and interface bonding force of the filler in the resin be effectively improved and the defects of the coating be reduced, but also the insulation barrier characteristic of boron nitride and the electrochemical anti-corrosion effect of zinc molybdate can be synergistically exerted, so that the long-term corrosion resistance and high-voltage electric breakdown resistance of the coating in a severe environment can be remarkably enhanced.
Owner:ZJU HANGZHOU GLOBAL SCI & TECH INNOVATION CENT
A high-performance polypropylene electrical film resistant to electrical breakdown and a preparation method thereof
The application relates to the technical field of polypropylene electrical film, in particular to a high-performance polypropylene electrical film with electric breakdown resistance and a preparation method thereof. The application provides a preparation method of the high-performance polypropylene electrical film, wherein polypropylene powder, styrene, a crosslinking aid and a compatilizer are mixed, melt-extruded and granulated, and then subjected to heat pressing, cold pressing, bidirectional stretching, cooling and shaping, edge cutting and corona treatment to obtain the polypropylene electrical film; the crosslinking aid is prepared from maleic anhydride, 2,4,6-triaminotoluene and allyl isocyanate; and the compatilizer is obtained by reacting maleic anhydride and polypropylene. The polypropylene electrical film prepared by the application has good performance and combustion performance, high mechanical strength and strong electric breakdown resistance at high temperatures.
Owner:DONGGUAN JUZHENGYUAN TECH CO LTD +1
Preparation method and application of electric breakdown-resistant corona-resistant polyimide film
The invention belongs to the technical field of preparation of electric insulating materials, and discloses a preparation method and application of an electric breakdown-resistant corona-resistant polyimide film. According to the invention, an in-situ polymerization method is adopted, and a diamine monomer containing a pyrimidine structure and a dianhydride monomer containing a nitrogen heterocyclic ring structure are respectively introduced into a polyimide molecular chain according to a certain proportion, so that the electric breakdown-resistant corona-resistant polyimide film with excellent insulating property is prepared. The direct-current breakdown field strength of the electric-breakdown-resistant corona-resistant polyimide film at room temperature is 431.33 kV / mm, the alternating-current breakdown field strength at room temperature can reach 308.54 kV / mm, and the corona-resistant service life at high frequency can reach 1305 s. The electric-breakdown-resistant corona-resistant polyimide film provided by the invention has the characteristics of breakdown resistance, corona resistance, good solution processability and the like, the preparation process is simple, the cost is relatively low, and the electric-breakdown-resistant corona-resistant polyimide film can be popularized and implemented.
Owner:DALIAN UNIV OF TECH
Physical modified polypropylene capacitor film material and preparation method and application thereof
The invention belongs to the technical field of thin film capacitors, and particularly relates to a physically modified polypropylene capacitor film material and a preparation method and application thereof. According to the physically modified polypropylene capacitor film material provided by the invention, the p-aminobenzoic acid polar filler and the maleic anhydride grafted polypropylene are simultaneously introduced, and the maleic anhydride grafted polypropylene is used as a bridge to promote the p-aminobenzoic acid polar filler to be effectively dispersed in the polypropylene capacitor film material, so that moisture is sufficiently adsorbed and removed; in addition, the p-aminobenzoic acid polar filler can also improve the dielectric property of the polypropylene capacitor film material, so that the polypropylene capacitor film material is more resistant to electric breakdown, and the service life of the film capacitor is prolonged. Therefore, the high-performance polypropylene capacitor film material can be obtained after physical modification of the p-aminobenzoic acid polar filler and the maleic anhydride grafted polypropylene, and the technical problem of low performance of the polypropylene capacitor film material in the prior art is solved.
Owner:ELECTRIC POWER RES INST CHINA SOUTHERN POWER GRID CO LTD
Polycation modified meta-aramid insulation paper and preparation method thereof
The invention discloses polycation modified meta-aramid insulating paper and a preparation method thereof, and relates to the technical field of insulating materials. Meta-aramid chopped fibers are modified through polydimethyldiallylammonium chloride, then acrylamide is added for cross-linking enhancement, then the modified meta-aramid chopped fibers and meta-aramid fibrids are mixed and molded, and the polycation modified meta-aramid insulating paper is obtained. The polycation modified meta-aramid insulation paper is obtained. According to the invention, through a polycation modification technology, the interface bonding force between the meta-aramid chopped fiber and the fibrid is obviously enhanced. The modified insulation paper is excellent in mechanical performance, the tensile strength is greatly improved, the pore defects are reduced, and the compactness is enhanced, so that the strict requirements of the high-voltage insulation paper are met. Besides, the breakdown field strength of the modified insulation paper is remarkably improved, the deep trapped charge trapping capacity is enhanced, energy accumulation in the electric breakdown process is effectively inhibited, and higher reliability is shown in a complex electric field environment.
Owner:NORTH CHINA ELECTRIC POWER UNIV
Water-resistant and electric-breakdown-resistant PVC (polyvinyl chloride) insulating electrical adhesive tape and preparation method thereof
ActiveCN120924175ANon-macromolecular adhesive additivesFilm/foil adhesive primer layersAdhesive cementPolymer science
The invention discloses a water-resistant and electric-breakdown-resistant PVC (polyvinyl chloride) insulating electrical adhesive tape and a preparation method thereof, and relates to the technical field of insulating electrical adhesive tapes. The water-resistant and electric-breakdown-resistant PVC insulating electrical adhesive tape comprises a PVC film layer and an adhesive layer arranged on one surface of the PVC film layer, the adhesive layer comprises a bottom coating which is in direct contact with the PVC film layer and a pressure-sensitive adhesive layer which is arranged on the other surface of the bottom coating. Wherein the PVC film layer is prepared from the following raw material components in parts by weight: 50 parts of PVC resin, 10 to 15 parts of insulating filler, 15 to 20 parts of a toughening agent, 2 to 4 parts of a heat stabilizer, 0.25 to 0.75 part of a lubricating agent and 0.5 to 1.5 parts of an antioxidant; the bottom coating is prepared from the following raw material components in parts by weight: 50 parts of acrylate monomer, 6 to 8 parts of unsaturated acid, 2 to 3 parts of photoinitiator and 0.5 to 1 part of antioxidant.
Owner:DONGGUAN YIZHOU ADHESIVE PROD CO LTD
An abnormality searching device, method and equipment for a laid mineral insulated cable
ActiveCN116678356BTesting dielectric strengthWeather/light/corrosion resistanceMining engineeringElectric power system
The application discloses a device, method and equipment for checking abnormalities of a laid mineral insulated cable, and belongs to the technical field of power facilities. The device comprises: a laying track acquisition module, which is used to acquire a track line of the laid mineral insulated cable; a position of interest determination module, which is used to determine a position of interest according to the track line; and a flaw detection module, which is used to perform nondestructive flaw detection on the position of interest based on a nondestructive flaw detection means to determine whether the position of interest has an abnormality. According to the technical scheme, the position of the mineral insulated cable where damage defects are prone to occur can be checked for abnormalities through the laying track of the mineral insulated cable, maintenance personnel can be helped to timely repair the abnormal position, the insulation of the mineral insulated cable is prevented from being too low and electric breakdown from occurring, the safe operation of a power system is maintained, the service life is prolonged, and the maintenance cost of the mineral insulated cable is reduced.
Owner:GUANGZHOU PANYU CABLE WORKS
Rapid detection device for mobile distribution transformer
PendingCN121364370ATesting dielectric strengthCleaning using toolsDistribution transformerElectric breakdown
The invention discloses a rapid detection device for a mobile distribution transformer, and relates to the technical field of transformer detection. Comprising an electric breakdown test piece, an oil immersion control piece is installed on the electric breakdown test piece, and the oil immersion control piece is used for controlling the detection oil level; the electric breakdown test piece is provided with two electrifying electrode column pieces; the two energized pole members are used for testing the breakdown-resistant performance of oil of the transformer; the electric breakdown test piece is provided with a cleaning piece; the bottom of the electric breakdown test piece is provided with a cleaning control piece; the electrified electrode column piece can be matched with an oil immersion control piece, the height of the liquid level of oil is controlled, and it is ensured that the liquid level of transformer oil in the oil cup can meet the anti-breakdown detection requirement; the problems that a detachable oil cup of an existing movable distribution transformer is not convenient to limit the depth of a test oil level, and a pole is not convenient to clean automatically after oil is added are solved.
Owner:JIANGSU SUGONG ELECTRIC POWER TECHNOLOGY CO LTD
Insulated cable material and application thereof in medium-voltage armored cable
The invention discloses an insulated cable material composition and application thereof in a medium-voltage armored cable. The composition takes 100 parts of polyethylene as a matrix, and is compounded with a styrene-maleic anhydride copolymer, a nano filler, 4, 4 '-dihydroxybenzophenone bis (methyl) acrylate, a cross-linking agent, an antioxidant and a lubricant. An anhydride group of the styrene-maleic anhydride copolymer reacts with a filler hydroxyl group to form a stable interface layer, so that space charge accumulation is effectively inhibited. A bis (methyl) acrylate group of the voltage stabilizer is synchronously subjected to chain extension-crosslinking in polyethylene to construct a high-strength three-dimensional network. The tensile strength of the obtained insulating material is larger than or equal to 28 MPa, the elongation at break is larger than or equal to 400%, the breakdown voltage is larger than or equal to 33 kV, the electric breakdown strength is larger than or equal to 400 kV / mm, the volume resistivity is larger than or equal to 5.2 * 10 < 14 > omega.m, and the insulating material is suitable for a medium-voltage armored cable insulating layer.
Owner:GUANGZHOU PANYU CABLE WORKS
Lamp lighting device, fluorescence detector and chromatograph
A lamp lighting device is used to light a discharge lamp provided as a light source in a fluorescence detector. The discharge lamp has a configuration in which an anode and a cathode are arranged to be opposite to each other in a discharge container. The lamp lighting device includes a lamp driver, a lamp-voltage detector and a deterioration determiner. The lamp driver drives the discharge lamp. The lamp-voltage detector detects a lamp voltage in a monitoring period until a discharge state reaches a predetermined stable state after a discharge lamp in an unlit state is lit due to electrical breakdown. The deterioration determiner determines a deterioration state of the discharge lamp based on a detected lamp voltage.
Owner:SHIMADZU CORP
Cylindrical battery monomer, battery device and power utilization device
ActiveCN223712874USmall-sized cells cases/jacketsCell sealing materialsElectrical batteryElectric breakdown
The utility model provides a cylindrical battery monomer, a battery device and a power utilization device, and belongs to the technical field of batteries. A cylindrical battery cell includes a housing, an electrode terminal, an electrode assembly, a seal, a first insulator, and a second insulator. The electrode terminal is provided on a wall portion of the case. The electrode assembly comprises a main body part and a first tab; the first tab is arranged at one end of the main body part and is electrically connected with the electrode terminal; the sealing piece comprises a first sealing part positioned between the wall part and the first limiting part of the electrode terminal; the first sealing part exceeds the first limiting part in the direction deviating from the central axis of the cylindrical battery monomer. The first insulating part comprises a first insulating part arranged between the wall part and the first tab, the first insulating part is provided with a through hole, the first sealing part is located in the through hole, and a first gap is formed between the first sealing part and the hole wall surface of the through hole. The second insulating part is located between the wall part and the first tab, and the projection of the second insulating part in the thickness direction of the wall part covers at least part of the first gap, so that the risk of electric breakdown of the first tab and the wall part is reduced.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Gear experiment device, gear electric breakdown experiment method and gear electric corrosion experiment method
PendingCN121027759AMaterial breakdown voltageTesting dielectric strengthGear wheelControl engineering
The invention discloses a gear experiment device, a gear electric breakdown experiment method and a gear electric corrosion experiment method.The gear experiment device comprises a gear experiment mechanical mechanism which comprises a gear box and a gear assembly, an installation cavity is formed in the gear box, and the gear assembly is detachably installed in the installation cavity; the gear assembly comprises a first rotating shaft, a second rotating shaft and two gear samples, and the two gear samples are mounted on the first rotating shaft and the second rotating shaft respectively; the power mechanism is connected with the first rotating shaft; the load loading mechanism is connected with the second rotating shaft; the voltage loading mechanism is electrically connected with the first rotating shaft and the second rotating shaft; the oil supply mechanism communicates with the mounting cavity; and the data acquisition mechanism is electrically connected with the load loading mechanism and the voltage loading mechanism and is used for acquiring experimental data. The gear experiment device can accurately simulate the actual operation condition of the gear in the generator gearbox integrated system, and can carry out accurate electric breakdown and electric corrosion experiments on the gear sample.
Owner:HUNAN NANFANG AVIATION HIGH ACCURATE DRIVE
Method for evaluating filling state of nanoparticles in distribution cable insulation system
The invention provides a method for evaluating the filling state of nanoparticles in a distribution cable insulation system, and belongs to the field of cable insulation state evaluation. The problems that the evaluation result is single and the insulation state of the distribution cable cannot be comprehensively reflected due to the fact that the prior art is biased to evaluate a certain performance of cable insulation are solved. The method comprises the following steps: adopting a nano composite insulating material as a distribution cable insulation system, and constructing a geometric model of a nano particle filling state in the distribution cable insulation system; the contribution of an external physical field to electric breakdown development is considered, and the total free energy of a distribution cable insulation system is constructed; constructing a kinetic equation of electric breakdown; setting simulation parameters; iteratively solving the kinetic equation to obtain the development condition of the electric breakdown path; respectively solving and counting the energy distribution of each position in the distribution cable insulation system, and finally giving out the evaluation of the filling state of the nanoparticles. The method is applied to insulation evaluation of the nano-composite insulating material.
Owner:SHANXI SHIJI PILOT POWER SCI & TECH CO LTD
Insulation tray for accelerator irradiation conductive product
ActiveCN223315434UContainers to prevent mechanical damageRigid containersElectric breakdownEngineering
The utility model relates to the technical field of irradiation processing of electron accelerators, in particular to an insulating tray for an accelerator irradiation conductive product, which comprises a tray. The protective frame is detachably arranged in the tray, the two ends of the connecting piece are elastically connected into connecting holes in the positions of the end points of the outer edges of the top end and the bottom of the tray respectively, the fixing pieces are symmetrically arranged in the two ends of the connecting piece, and the connecting piece further comprises an outer cylinder. The insulation tray comprises an outer cylinder, a stainless steel tray arranged on the outer cylinder, and a connecting column elastically connected to the bottom plane in the outer cylinder and connected with the inner wall of the outer cylinder in a sliding mode, and a layer of protection frame made of insulation material PVC is additionally arranged between a product to be machined and the tray in a mode that the product to be machined is completely isolated from the stainless steel tray. The phenomenon of electric breakdown caused by current accumulation of the product is avoided, and beta rays are not interfered to act on the product.
Owner:ZHONGJIN IRRADIATION
Arc-isolating contact arc extinguishing system and circuit breaker with high breaking capacity
PendingCN121922539AElectric switchesProtective switch operating/release mechanismsElectric breakdownStructural engineering
The invention discloses an arc-isolating contact arc-extinguishing system and a high-breaking-capacity circuit breaker, the arc-isolating contact arc-extinguishing system comprises a contact system and an arc-extinguishing system, the contact system comprises a moving contact assembly and a static contact assembly, the arc-extinguishing system comprises an arc-isolating part and an arc-extinguishing chamber, the arc-isolating part is provided with an arc-isolating plate and a first hinge point, and the arc-isolating plate is provided with a second hinge point. The arc isolating part is in transmission connection with the moving contact assembly; when the moving contact assembly is located at the closing position, the flash barrier is located on the outer side of one end of the static contact assembly and located below the moving contact assembly at the same time. When the moving contact assembly moves to an opening position, the moving contact assembly can drive the arc-isolating part to rotate around the first hinge point, so that the arc-isolating plate moves to an opposite area between a moving contact of the moving contact assembly and a static contact of the static contact assembly and completely shields opposite surfaces of the moving contact and the static contact. According to the invention, the electric gap between the moving and static contacts is greatly increased, the electric breakdown phenomenon between the moving and static contacts in the breaking process of the circuit breaker is effectively avoided, and the breaking capacity of the circuit breaker is remarkably improved.
Owner:CHANGZHOU ANKAI ELECTRIC CO LTD
A silicone rubber cold shrink cable joint material and a method of making the same
The present application relates to the technical field of silicone rubber cold shrink cable accessory preparation, in particular to a silicone rubber cold shrink cable intermediate joint material and a preparation method thereof. The present application overcomes the problems of interface electric breakdown, gripping force attenuation, breathing effect and sealing failure caused by thermal expansion and cold shrinkage of the cold shrink cable joint due to physical stacking. By adopting methyl vinyl silicone rubber and ternary ethylene-propylene rubber blending matrix, introducing vinyl MQ silicone resin hard segment and polyether modified silicone oil dynamic sealing component; preparing nano boron nitride, aluminum hydroxide and magnesium oxide composite functional filler through liquid phase impregnation modification process, and realizing rubber densification by high vacuum dynamic mixing; adopting double barrel synchronous double injection molding process, periodic pressure maintaining pulse is applied at the interface to induce in-situ addition reaction; after demolding, simulated cable core rod load secondary vulcanization is performed. The interface peeling strength, breakdown strength and interface pressure maintenance rate are improved, ensuring the long-term sealing and insulation reliability of the joint in extreme environment.
Owner:SUZHOU BOER COLD-HEAT SHRINK MATERIALS CO LTD
Winding outgoing line structure of high-voltage concentrated winding motor
ActiveCN223613122UWindings insulation shape/form/constructionWindings conductor shape/form/constructionElectric machineElectric breakdown
The utility model discloses a winding outgoing line structure of a high-voltage concentrated winding motor, which comprises a winding with an annular structure and a U-shaped side part of the winding; the outgoing line is arranged in the middle of the U-shaped structure; and the insulating layer is sleeved on the peripheries of the winding and the outgoing line. According to the winding outgoing line structure of the high-voltage concentrated winding motor provided by the invention, the outgoing line is arranged in the middle of the side part of the winding, and the peripheries of the outgoing line and the winding are wrapped with the insulating layer, so that compared with the prior art, the arrangement mode of the outgoing line has the advantages that the distance between the outgoing line and the middle part of the winding is increased; therefore, the creepage distance of the root of the insulating layer on the surface of the outgoing line is increased, and the creepage breakdown phenomenon caused by the winding withstand voltage of the high-voltage concentrated winding motor is avoided.
Owner:CSR ZHUZHOU ELECTRIC CO LTD
Light emitting diode structure with electrostatic protection function
The application belongs to the technical field of semiconductor devices, and particularly relates to a light-emitting diode structure with an electrostatic protection function, which comprises an insulating base and a transparent lampshade installed on the end face of the insulating base, the inside of the transparent lampshade is provided with a semiconductor light-emitting assembly, and the light-emitting diode structure further comprises: a conductive ring, the conductive ring is fixedly sleeved on the outer side wall of the transparent lampshade, and the conductive ring is fixedly connected with the top of the insulating base, the outer side wall of the transparent lampshade and the side wall of the insulating base are both coated with a transparent conductive coating, an electrostatic breakdown unit is installed on the bottom of the insulating base, and the conductive ring is installed with a conductive assembly. The application can not only guide weak electrostatic charges away from the outer surface of the light-emitting diode in time, so that the electrostatic charges are gathered, but also can generate air flow by electrostatic breakdown of air, and the air flow can eliminate dust on the surface of the light-emitting diode, so that the electrostatic charges can be prevented from invading the semiconductor light-emitting element and affecting the light-emitting effect, and dust can be automatically removed.
Owner:DONGGUAN EKINGLUX OPTOELECTRONICS TECH