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32results about How to "Arc resistant" patented technology
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Copper alloy material for contact net wire
InactiveCN1410569AGood hot and cold processabilityLow costTrolley linesMetal/alloy conductorsChemical compositionIngot
The chemical constituent (weight percentage) of the copper alloy material includes Te 0.1-1.2, Mg 0.2-1.3, Li 0.02-0.50 and Cu as the rest as well as unavoidable impurities. According to specification needed, the contact line of conducting wire is made through the procedures of getting conventional materials ready, mixture making, melting, casting ingot as well as cold working and hot working. Its copper alloy possesses the properties of tensile strength as 523-576 MPa, resistivity as 0.022695-0.023764 ohm mm2 / m, recrystallization temperature as 390-410 deg.C. The invented alloy provides the capability of anti electric arc equivalent to the alloy of 0.3Ag-Cu but with lower cost than the 0.3 Ag-Cu alloy about 10-20%.
Owner:四川鑫炬新兴新材料科技有限公司
Antistatic antibacterial PC (polycarbonate)/ABS (acrylonitrile-butadiene-styrene copolymer) composite material
The invention discloses an antistatic antibacterial PC (polycarbonate) / ABS (acrylonitrile-butadiene-styrene copolymer) composite material comprising the following components by weight: 63-93 parts of polycarbonate, 57-65 parts of ABS, 33-47 parts of a flame retardant agent, 29-44 parts of a nano antibacterial agent, 41-47 parts of an antiaging agent, 24-32 parts of an antistatic agent, 24-32 parts of a compatibility agent, 22-26 parts of a lubricant, 19-23 parts of a toughening agent, 15-20 parts of a synergistic agent, 10-16 parts of an insulation agent, 10-16 parts of a yellowing resistant agent and 17-24 parts of a wear-resisting agent. The antistatic antibacterial PC / ABS composite material has excellent antistatic performance, avoids the deleterious effects of electrostatic, and also has antibacterial properties, more than 99% bacteriostasis rate can be maintained for a long term, the composite material has good anti-aging properties, is flame retardant, simultaneously reduces the combustion smoke density, has excellent characteristics of wear resistance, yellowing resistance, high voltage resistance and electric arc resistance, and is suitable for different use requirements.
Owner:SUZHOU NEW DISTRICT JIAHE PLASTIC
Preparation method of chromium powder for producing copper-chromium contact
The invention relates to a preparation method of chromium powder for manufacturing a copper-chromium contact. The preparation method mainly comprises the steps as follows: selection of raw chromium block, coarse crushing, vortex fine crushing, vacuum ball milling and vibrating sieving and obtaining the chromium powder; the coarse crushing is carried out by a special hydraulic coarse crusher with a water cooling plant in a room which is provided with an air conditioner and a dehumidifier, after the coarse crushing, the largest particle diameter is less than 3mm, the chromium can be effectively prevented from heating and oxidation in the course of the coarse crushing, the vortex fine crushing is carried out in a closed system which consists of an automatic feeder, a turbo-mill, a powder collector, a vacuum pump, an argon inlet and a cooler, after the vortex fine crushing, the chromium powder is put into a vacuum ball mill for ball milling with the ball-material ratio being 2:1-3:1, the rotary speed of the ball mill is controlled to ensure that the material ball is in a rolling state, and the ball milling time is 91-101 hours. The preparation method has the advantages that the quality of the chromium powder is stable, the production efficiency is high, the energy consumption is low, the powder yield is high, etc.
Owner:ZHEJIANG YATONG METAL CERAMICS +1
Silver base rare earth alloy contact material for low-voltage switch electric appliance and method for preparing same
InactiveCN1632894AExtended service lifeReduce temperature riseContact materialsLow voltageRare earth
This invention relates to a silver-based rare earth alloy touch material used in low voltage switch appliance and its process method. Its chemical components are the following: rare earth metal oxide xú¢1í½7 úÑ; Me oxide yú¢1í½3 úÑ; SnO#-[2] zú¢(12-x-y)úÑ; the rest is metal silver, wherein the rare earth metals are LaíóCeíóPr or Nd and Me as BiíóIníóSb or T1. Its process method is as following: to use chemical co-precipitation to make powder and to shape and sinter the deposited powder.
Owner:HEBEI UNIV OF TECH
Bathtub-floor integrated super multi-coating (SMC) floor
ActiveCN102071726AHigh mechanical strengthReduce material weightDomestic plumbingFlooringBathtubEnvironmental geology
The invention discloses a bathtub-floor integrated super multi-coating (SMC) floor, which comprises a floor main body and a bathtub which are integrally arranged, wherein a bathtub drain hole is arranged at the bottom surface of the inner side of the bathtub, the edge of the bathtub extends downwards to form the skirt of the bathtub, a repair and maintain hole and the drain hole of a wash basin are arranged on the side edge of the skirt of the bathtub, the bottom of the bathtub is connected with the floor main body which is integrally arranged with the bathtub, and a drain ditch is arranged at the connection part of the bathtub and the floor main body, a floor drain hole and a defection hole are arranged on the floor main body, a shoulder step is arranged at the edge of the floor main body, a watertight shutter is arranged on the lateral straight edge of the shoulder step, and the bottoms of the floor main body and the bathtub are pneumatically reinforced, and are provided with adjustment bolts. The bathtub-floor integrated super multi-coating floor arranges the floor, the bathtub and the skirt of the bathtub into a whole body, so the bathtub and the skirt of the bathtub are parts of the floor, no splicing seam is generated, so the water leakage problem caused by the splicing seam of the conventional integral bathroom is solved, and the floor has an attractive and elegant overall appearance, and is easy to clean; and according to the floor, the repair and maintain hole and the drain hole of the wash basin are arranged on the skirt of the bathtub, so the subsequent fault maintenance is facilitated.
Owner:SUZHOU COZY HOUSE EQUIP
Resin casting terminal bus
InactiveCN107749601AEliminate potential differenceWaterproofTotally enclosed bus-bar installationsLaminated bus-barsPotential differenceEngineering
The invention discloses a resin casting terminal busbar, which comprises a casting body, the casting body is provided with a phase-separation block group, the number of the phase-separation block groups is multiple, and the plurality of phase-separation block groups are cast on the casting body in parallel, symmetrical and equidistant The center of the inner side; the plurality of phase-separated block groups are composed of a first phase-separated block, a second phase-separated block and a third phase-separated block. The casting body of the resin casting terminal busbar is made of insulating resin, with high protection level. The first phase separation block, the second phase separation block and the third phase separation block are all molded with DMC material, which has high strength, corrosion resistance, The advantages of impact resistance, arc resistance and smoothness; the tin plating on the surface of both ends of the copper bar can eliminate the potential difference formed by the copper and aluminum joints due to the unequal number of electrons; the overall protection level is high, high strength, and arc resistance.
Owner:陈武湘
Heat insulation-type cable
InactiveCN105913945AAvoid breakingPlay a protective effectClimate change adaptationPower cables with screens/conductive layersFiberInsulation layer
The invention discloses a heat insulation-type cable, which comprises a cable core. An inner sheath and an outer sheath are extruded outside the cable core; the cable core is composed of a triangular support, three insulated wire cores mutually extruded inside the triangular support and ground wires located at three vertex angles of the triangular support; a ceramic fiber is arranged between the triangular support and the inner sheath; and an elastic buffer layer with a thickness of 2 to 5 mm, a metal armored layer with a thickness of 2 to 4 mm and a rock wool heat insulation layer with a thickness of 3 to 6 mm are sequentially arranged between the inner sheath and the outer sheath. Through arranging multiple heat insulation structures, the cable of the invention has the advantages of good heat insulation performance, high temperature resistance, good heat stability, low heat conductivity and the like.
Owner:WUXI NEW SUNSHINE CABLE
Silver base rare earth alloy contact material for low-voltage switch electric appliance and method for preparing same
InactiveCN100369171CExtended service lifeReduce temperature riseContact materialsLow voltageRare earth
Owner:HEBEI UNIV OF TECH
Crosslinked polyethylene insulated multi-core flame retardant cable
InactiveCN105913959AAnti-extrusionAlleviate squeezed spacePower cables with screens/conductive layersFlexible cablesPolyesterInsulation layer
The invention discloses a crosslinked polyethylene insulated multi-core flame retardant cable, which comprises a cable core. The gap of the cable core is provided with an inorganic mineral oxygen barrier layer; the cable core is wrapped with a first polyester tape; a semi-conductive shielding layer is extruded outside the polyester tape; a steel strip armored layer is arranged outside the inner semi-conductive shielding layer; a rock wool heat insulation layer is extruded outside the steel strip armored layer; and the outermost layer of the cable is provided with a silica fireproof sleeve; the cable core is formed by stranding a ground wire and two insulated wire cores arranged symmetrically with the ground wire as an axial center in a horizontal mode; and the cable core is internally provided with a group of through holes symmetrically with the ground wire as the axial center. The crosslinked polyethylene insulated multi-core flame retardant cable has the advantages of good flame retardancy, high temperature resistance, good cooling performance, fire resistance, good insulated performance and the like.
Owner:WUXI NEW SUNSHINE CABLE
Compound sound insulation material and preparation method thereof
The invention discloses a compound sound insulation material and a preparation method thereof. The compound sound insulation material contains the following materials by weight percent: 40% of vinyl chloride acetate resin, 10-20% of low-density polyethylene, 20-30% of methyl vinyl silicone rubber, 5-10% of a high molecular compatilizer, 2-3% of a diluent, 1-5% of superfine fiber, and 1-2% of an antioxidant. The preparation method comprises the following steps: S1, weighing and preparing materials: weighing the materials according to weight percentage and marking for storage; S2, feeding and blending; S3, plastifying; and S4, performing extrusion molding. According to the invention, due to the setting of components including vinyl chloride acetate resin, low-density polyethylene, methyl vinyl silicone rubber, high molecular compatilizer, diluent, superfine fiber and antioxidant, so that the sound insulation effect of the compound sound insulation material is improved; and due to the setting of preparation procedures of weighing and preparing materials, feeding and blending, plastifying and performing extrusion molding. Therefore, the quality of the sound insulation material is promoted, and further the market competitiveness of the product is promoted.
Owner:王立菊
Miniature resonant-resistant three-phase outdoor composite insulation combination voltage transformer
InactiveCN108389708AArc resistantUV resistantTransformersTransformers/inductances casingsTransformerEngineering
The invention discloses a miniature resonant-resistant three-phase outdoor composite insulation combination voltage transformer. Three voltage mutual inductors and a harmonic-elimination mutual inductors are arranged in the miniature resonant-resistant three-phase outdoor composite insulation combination voltage transformer, voltage mutual inductor primary winding coils are arranged on the voltagemutual inductors, a terminal of the primary winding coils of the three voltage mutual inductors is electrically connected with a primary terminal of the voltage transformer via a high-voltage fuse, the other end of the primary winding coils of the three voltage mutual inductors are connected in series to a coil terminal O of the harmonic-elimination mutual inductor, the other coil terminal N of the harmonic-elimination mutual inductor is connected to the primary terminal of the voltage transformer and is electrically and directly connected with ground for use, tail ends of secondary winding coils of the voltage mutual inductors are connected in series to a terminal o of the harmonic-elimination mutual inductor, protection winding coils of the voltage mutual inductors are sequentially connected in series in end-to-end way to form an opening triangle and a harmonic-elimination resistor is connected in series among openings of the opening triangle. By the miniature resonant-resistant three-phase outdoor composite insulation combination voltage transformer, the safety and the insulativity are greatly improved, three-phase unbalance and harmonic burnt-out phenomena are prevented, and miniature is achieved.
Owner:DALIAN ZHONGGUANG INSTR TRANSFORMER
Bathtub-floor integrated super multi-coating (SMC) floor
ActiveCN102071726BHigh mechanical strengthLight weight materialDomestic plumbingFlooringWhole bodyStructural engineering
Owner:WUHU COZY SANITARY WARES EQUIP
Mining explosion-proof wireless antenna leading-in device and installation method thereof
PendingCN111883904ASimple structureReasonable designAntenna supports/mountingsRadiating elements structural formsEpoxyStructural engineering
The invention discloses a mining explosion-proof wireless antenna leading-in device and an installation method thereof. The device comprises an explosion-proof sleeve and a sealing pressing piece, a radio frequency cable passes through the sealing pressing piece, an explosion-proof shell and the explosion-proof sleeve, the explosion-proof sleeve comprises an explosion-proof outer sleeve and an explosion-proof inner sleeve, and the explosion-proof inner sleeve and the explosion-proof outer sleeve are in explosion-proof threaded connection; the sealing pressing piece comprises a pressing disc, asealing cylinder and a sealing gasket, wherein the pressing disc, the sealing cylinder and the sealing gasket all extend into the explosion-proof shell; the radio frequency cable sequentially penetrates through the pressing disc, the sealing cylinder, the sealing gasket, the explosion-proof shell and the explosion-proof inner sleeve, and the space between the radio frequency cable and the explosion-proof inner sleeve is filled with epoxy resin; the method comprises the following steps: 1, testing the explosion-proof outer sleeve and the explosion-proof inner sleeve; 2, testing a sealing pressing piece; 3, testing the explosion-proof shell; 4, mounting an explosion-proof sleeve, a sealing pressing piece and a radio frequency cable; 5, testing the wireless antenna leading-in device. According to the invention, wireless operation is safe and reliable, and the device can be applied to mining explosion-proof equipment.
Owner:XIAN COAL MINING MACHINERY
Novel Ag-Ni electrical contact material and preparation method thereof
The invention discloses a novel Ag-Ni electrical contact material. The material comprises the following components of, by mass, 5-40% of Ni, 0.3-5% of TiB2 and the balance Ag. The novel Ag-Ni electrical contact material prepared through the method has the advantages of high hardness, good welding resistance, electric arc ablation resistance and excellent comprehensive performance.
Owner:YUNNAN UNIV
Bonded permanent magnet for large direct-drive permanent-magnet generator
InactiveCN102738910AReduce eddy currentReduce heatMagnetic circuit shape/form/constructionMetal layered productsEpoxyElectricity
The invention relates to a bonded permanent magnet for a large direct-drive permanent-magnet generator. The permanent magnet is formed by bonding a plurality of small permanent magnets. Since each permanent magnet group is formed by bonding a plurality of permanent magnets, the surface eddy, heat and thermal loss of the permanent magnets can be effectively reduced; in consideration of the requirements for salt-fog resistance and humidity-heat resistance in the overall operating environment of a wind-driven generator set, the coating thereof can ensure that the permanent magnets can meet the operating requirements under severe environmental conditions and can not cause the inter-layer conduction of the permanent magnets; and epoxy glue used for bonding the permanent magnets has fine insulating properties such as high temperature resistance, convenient curing process, high dielectric property, surface creepage resistance and arc resistance. In use, the invention can effectively ensure assembling requirements, can achieve the technical requirement effect and can be widely used for permanent magnets of various large permanent-magnet generators.
Owner:GUODIAN UNITED POWER TECH
Extruded glass reinforced plastic electric part supporting system
InactiveCN102689474AImproved mechanical properties and withstand voltageEasy to maintain and updateSynthetic resin layered productsElectric arcCorrosion
The invention relates to an electric part supporting system which is widely applied in a power system. Through a pultrusion technology, the electric part supporting system comprises a basement layer, which is prepared by the use of vinyl resin as a base material and is reinforced with the ECR alkali-free improved yarn. An alkali-free stitch-bonded felt exterior layer is disposed outside the basement layer. The product provided by the invention has advantages of corrosion resistance, insulation performance, strong mechanical property, electric arc resistance, frame retardation, light weight, long service life, life-long maintenance-free performance and incomparable safety performance.
Owner:扬州永伟联盛旅游用品有限责任公司
Aircraft arresting bed arresting unit top cover and preparation method thereof
ActiveCN106751348BHigh strengthImprove flame retardant performanceArresting gearDispersityBenzoyl peroxide
The invention provides an airplane blocking bed blocking unit top cover and a preparation method thereof, and aims to provide the airplane blocking bed blocking unit top cover which is stable in mechanical strength, low in dispersity, high in weather resistance, and high in flame retardant property. Through the technical scheme, dicyclopentadiene type unsaturated polyester resin is adopted as matrix resin, a polybutadiene-styrene copolymer is adopted as a low shrinkage agent, benzopinacole silicon alkyl ether is respectively or commonly used with benzoyl peroxide tert-butyl ester, peroxide-2-ethylhexoic acid tert-butyl ester to form an initiator, an unsaturated polyester glass fiber modeling piece SMC prepared from an ultraviolet absorbent is added, then the SMC resin paste is used for steeping and rolling an upper resin paste film layer, a middle chopped glass fiber layer and a lower resin paste film layer through a coating machine, and the SMC material containing 8 to 12 parts by weight of chopped glass fiber is prepared through curing; and then the product is molded through compression and cooled to room temperature in a laminated top cover mold with required thickness.
Owner:周志亮
An outdoor voltage transformer assembly with a primary fuse operable
ActiveCN105304302BReduce power outage timeImprove satisfactionTransformersInductancesTransformerUltraviolet
The invention relates to a primary fuse-operable outdoor voltage transformer assembly, which is used for fault protection of outdoor high-voltage lines, including a voltage transformer (1), a fuse and an operating rod (3), the fuse top and The voltage transformer (1) is connected through the rotating bayonet, the bottom of the fuse is connected flexibly with the top of the operating rod (3), and the fuse is fed into the voltage transformer (1) through the operating rod (3), or the fuse is fed into the voltage transformer (1) through the operating rod (3) Pull the fuse out of the voltage transformer (1). Compared with the prior art, the voltage transformer of the present invention is an epoxy resin cast insulating fully enclosed structure, which has the characteristics of arc resistance, ultraviolet resistance, aging resistance, large creepage distance, small partial discharge, and strong overvoltage resistance. Fuse replacement does not require power-off operation, flexible operation, and high safety, so as to reduce the power-off time of outdoor circuits, reduce power-off losses, and improve user satisfaction.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
A room-temperature fast-curing low-stress transparent epoxy resin adhesive
ActiveCN104479607BLow viscosityEasy to apply glueNon-macromolecular adhesive additivesMacromolecular adhesive additivesShock resistanceBisphenol A
The invention belongs to the technical field of adhesives, and in particular relates to a room-temperature fast-curing low-stress transparent epoxy resin adhesive, which is composed of epoxy resin A component and curing agent B component in a volume ratio of 1:1; The epoxy resin A component includes: hydrogenated bisphenol A epoxy resin, bisphenol A glycidyl ether epoxy resin, functional acrylate monomer, acrylate diluent, tackifier and silane coupling agent; The curing agent B component includes: polythiol, tertiary amine accelerator, co-accelerator, stabilizer, curing accelerator 1 and curing accelerator 2. The adhesive prepared by the present invention maintains fast curing for 5 minutes, high transparency and good bonding strength, low exothermic temperature and small stress during curing, good applicability in electronic device assembly, and electrical insulation , Excellent voltage breakdown resistance, impact resistance and aging resistance, greatly expanding the application of mercaptan-epoxy resin adhesives in the manufacture of electronic devices.
Owner:信泰永合(烟台)新材料有限公司
Silver-vanadium-based contact material and preparation method thereof
InactiveCN110983097AImprove welding resistanceArc-resistantTransportation and packagingMetal-working apparatusElectrical resistance and conductanceFusion welding
The invention provides a silver-vanadium-based contact material and a preparation method thereof. The formula comprises the following components of, in percentage by weight, 10-30% of vanadium or also0.1-5% of carbon, and the balance silver. The preparation method adopts a powder metallurgy method. The silver-vanadium-based contact material has the characteristics of good fusion welding resistance and arc ablation resistance, and also has the advantages of low contact resistance between contacts and low and stable temperature rise of the contacts under the long-term use condition. The material can be applied to appliances of 16A or even 25A or more. A proper amount of carbon is added into the contact material, so that the fusion welding force of the material can be further reduced, the fusion welding resistance of the material is improved, and the contact material can be used on circuit breakers with higher fusion welding resistance requirements.
Owner:哈尔滨东大高新材料股份有限公司
Environmental protection type organic coumarin-base photoluminescence anti-counterfeiting pigment, environmental protection type organic coumarin-base photoluminescence anti-counterfeiting ink,and preparation methods thereof
The present invention relates to an environmental protection type organic coumarin-base photoluminescence anti-counterfeiting pigment, an environmental protection type organic coumarin-base photoluminescence anti-counterfeiting ink, and preparation methods of the environmental protection type organic coumarin-base photoluminescence anti-counterfeiting pigment and the environmental protection type organic coumarin-base photoluminescence anti-counterfeiting ink. The photoluminescence anti-counterfeiting pigment contains 60-70 parts by weight of a cross-linked melamine-formaldehyde resin, and 1.0-2.0 parts by weight of a yellow dye. The method for preparing the photoluminescence anti-counterfeiting pigment and the photoluminescence anti-counterfeiting ink comprises: adding a formaldehyde solution and triethanolamine to a reactor, and adjusting the pH value to 8-9; adding melamine to the obtained mixture, adjusting the temperature to 75-85 DEG C, and adding an alcohol solvent to obtain a colorless and transparent melamine-formaldehyde resin solution; adding a coumarin-base dye and acetic anhydride, adjusting the pH value of the reaction system to 4.0-6.0, and carrying out cross-linking curing to obtain a cross-linked and cured colored resin dye mixture; drying, crushing, and screening to obtain the organic luminescence pigment; and adding the pigment to an aqueous binder resin to obtain the luminescence anti-counterfeiting ink. The anti-counterfeiting ink has characteristics of no polluting, fire retardation, no toxicity, no odor and the like, wherein destruction of the printing industry on the ecological environment can be reduced.
Owner:襄阳金飞环彩色包装有限公司
A series gap arrester
ActiveCN103606818BDoes not cause flickeringFlickering Phenomenon OvercomeOvervoltage protection resistorsOvervoltage arrestors using spark gapsFiberCarbon fibers
The invention discloses a series gap arrester comprising an arrester body, an insulator, an upper discharge rod and a lower discharge rod. An air gap is formed between the upper discharge rod and the lower discharge rod, and the air gap between the upper discharge rod and the lower discharge rod is fixed on the insulator. The upper discharge rod and the lower discharge rod are respectively formed by pressing, by weight, 20% of carbon fiber, 40% of high-carbon graphite, 5% of copper powder, 5% of white steel powder and 30% of conductive resin. The carbon fiber is rod-shaped, circular, octagonal, elliptic or oblong. No umbrella leaf flash-down phenomenon is caused. The series gap arrester has the characteristics of high strength (five times that of steel parts), strong heat resistance (resistant to high temperature above 2000 DEG C), small thermal expansion coefficient, small specific gravity (one fifth that of steep parts), light weight, arc resistance, corrosion resistance and strong aging and UV resistance. The carbon fiber can be permanently used.
Owner:吉林市能兴电力设备有限公司
Method for preparing high-strength aging-resistant vulcanized rubber
The invention relates to a method for preparing rubber. The technical problem to be solved is that the method is required to have the characteristic of low cost. The technical scheme is that a method for preparing high-strength aging-resistant vulcanized rubber comprises the following steps of: injecting raw materials which are stirred uniformly into a mould and vulcanizing to form the high-strength aging-resistant vulcanized rubber, wherein the vulcanization temperature is 120 to 130 DEG C; the vulcanization pressure is 0.3 to 0.5Mpa; and the vulcanization time is 40 to 60 minutes. The rubber consists of the following components in part by weight: 90 to 110 parts of zinc oxide, 30 to 50 parts of anti-aging agent SP-C, 12 to 14 parts of accelerator MBT, 7 to 9 parts of accelerator DPG, 19 to 21 parts of accelerator DM, 19 to 21 parts of rubber softener RX-80, 13 to 15 parts of stearic acid, 22 to 24 parts of sulfur, 3,500 to 3,700 parts of light calcium carbonate, 1,400 to 1,600 parts of natural rubber, 280 to 320 parts of styrene butadiene rubber, 190 to 210 parts of butadiene rubber, and 580 to 620 parts of machine oil No. 46.
Owner:郑华锋
External insulator for mutual-inductor
The invention an external insulation for a transformer, which comprises an epoxy resin layer (1) and a silicone rubber layer (2) coating the outer part of the epoxy resin layer (1). The external insulation compounds silicone rubber and epoxy resin layer, so as to have the characteristics of electric arc resistance, ultraviolet resistance, contamination resistance, long service life and the like; and the silicone rubber also has hydrophobicity and can operate for a long time without maintenance. The external insulation directly casts vulcanized silicone rubber on the surface of the epoxy resin by using special equipment without bonding, so as to prevent slits and ensure long-term operation under any harsh environments, even being submerged to a depth of 250 mm. The product has a surface creepage distance over 950 mm, and a designed service life of 50 years.
Owner:潘德滨
Low-frequency transformer with built-in shielding layer
InactiveCN110828106AGood electromagnetic shieldingImprove insulation performanceTransformers/reacts mounting/support/suspensionTransformers/inductances coolingTransformerStructural engineering
The invention discloses a low-frequency transformer with a built-in shielding layer. The low-frequency transformer comprises a shell with a bottom opening structure, a framework, a coil, pins and an iron core, the inner side of the shell is fixedly connected with a shielding layer, the inner side of the shielding layer is fixedly connected with a framework, the inner side of the framework is fixedly connected with the iron core, the outer surface of the iron core is provided with the coil, the bottom of the framework is fixedly connected with two groups of mounting plates of which the tops areof concave structures, and the inner sides of the tops of the mounting plates are fixedly connected with conducting strips. In the present invention, firstly, the shielding layer is arranged on the inner side of a shell, the shell is made of an aluminum nitride ceramic material, by means of the good insulating property and heat conductivity of the aluminum nitride ceramic material, the insulatingproperty of the low-frequency transformer is improved while the low-frequency transformer is subjected to good electromagnetic shielding, then, the pins are inlaid into the limiting grooves to be fixed under the extrusion effect of extrusion springs, installation of the pins is completed, and therefore, convenient disassembly and assembly of the pins are achieved.
Owner:怀化市中三源电子有限公司
Primary fuse operable outdoor voltage transformer assembly
ActiveCN105304302AReduce power outage timeImprove satisfactionTransformersInductancesEpoxyOvervoltage
The invention relates to a primary fuse operable outdoor voltage transformer assembly which is used for fault protection of an outdoor high voltage circuit. The primary fuse operable outdoor voltage transformer assembly comprises a voltage transformer (1), a fuse and an operating rod (3), wherein the top of the fuse is connected with the voltage transformer (1) by virtue of a rotary bayonet, the bottom of the fuse is movably connected with the top of the operating rod (3), the fuse is sent into the voltage transformer (1) by virtue of the operating rod (3), or the fuse is withdrawn from the voltage transformer (1) by virtue of the operating rod (3). Compared with the prior art, the voltage transformer is of an epoxy resin poured insulation fully-closed structure and has characteristics such as electric arc resistance, ultraviolet resistance, aging resistance, large creep distance, small local discharge capacity, high overvoltage resistance and the like, the fuse can be replaced without power failure, the operation is flexible, the safety is high, the blackout time of an outdoor circuit can be reduced, the power-down loss can be reduced, and the user satisfaction can be improved.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
Insulating spider resistant to electrical carbon mark
InactiveCN102746558BExcellent electrical trace resistanceImprove securityPlastic/resin/waxes insulatorsLow-density polyethyleneElastomer
Owner:吉林市吉福新材料有限责任公司
Electrode heating device manufactured from epoxy plate
The invention relates to an electrode heating device manufactured from an epoxy plate. An epoxy plate heating box body and an epoxy plate cover plate are manufactured from an electrode heating box body and a cover plate through the epoxy plate; a plurality of mounting nuts are separately arranged in mounting holes of the epoxy cover plate by means of high temperature resistant glue; vacuum valves,pressure gages, pressure release valves and water injection valves are separately screwed into the mounting nuts; multiple groups of spiral heat exchange coils penetrate through the epoxy cover plate, and are adhered to a contact part of the epoxy cover plate by means of the high temperature resistant glue; two ends of the heat exchange coils are separately welded with a water distributor outletand a water collector inlet; combined electrodes are screwed into electrode mounting nuts in the epoxy cover plate through ceramic nuts; and the epoxy cover plate is hermetically connected with the epoxy cover plate heating box body by means of a bolt. The electrode heating device can achieve the purpose that electric energy is completely converted into heat energy, so that efficient utilization of energy is realized, a traditional fire coal and gas heating device in cities and towns and rural areas can be replaced, and the electrode heating device provides steam and heating devices for industrial units and residents, so that the purpose of energy conservation and emission reduction are achieved.
Owner:UNIV OF SHANGHAI FOR SCI & TECH
Silver rare earth oxide contact material for low-voltage switching device and preparation method thereof
InactiveCN102683051BExtended service lifeReduce temperature riseContactsLow voltageElectrical devices
The invention relates to a sol-gel preparation method for a silver rare earth oxide contact material for a low-voltage switching device. The material chemically comprises a rare earth oxide, an oxide of Me, SnO2 and metallic silver. Mass percentage of each oxide accounting for total mass of the oxide is 1-5% of rare earth oxide, 1-5% of oxide of Me, and the balance SnO2. The mass percentage of a sum of mass of the three kinds of oxide to the mass of metallic silver is oxide: silver=85-95:15-5. The silver rare earth oxide contact material for the low-voltage switching device does not contain Cd, is not toxic and environment-friendly, prolongs service life of a contact, and has high hardness, density and conductivity, and therefore contact performance and reliability of electrical devices are improved.
Owner:HEBEI UNIV OF TECH
Novel insulating material for cables
InactiveCN107880383AQuality improvementExtended service lifePlastic/resin/waxes insulatorsInsulated cablesInsulation layerElectrical conductor
The invention discloses a novel insulating material for cables. The material comprises an insulating layer, a shielding layer and a metal conductor; and the insulating layer is formed by fusing of a polypropylene polymer material and a polyethylene polymer material, and the insulation layer comprises 88 parts by weight of the polypropylene polymer material and 32 parts by weight of the polyethylene polymer material, wherein and the polypropylene polymer material includes the following components in parts by weight: 40 parts of polypropylene, 20 parts of rubber, 10 parts of polyvinyl chloride,5 parts of synthetic fibers and 7 parts of an adhesive; and the polyvinyl polymer material comprises the following components in parts by weight: 55 parts of polyethylene, 20 parts of calcium carbonate, 15 parts of polysulfone resin, and 3 parts of a binder. The insulating material for the cables contains the polyethylene, the polyethylene is odorless and non-toxic, has a hand feeling like wax, excellent low-temperature resistance, wherein the minimum usage temperature can reach -100 DEC C to 70 DEG C, good chemical stability, resistance to erosion of a plurality of acids and alkalis, insolubility in a common solvent under a normal temperature, and low water absorbing performance, thereby having excellent electrical insulating properties.
Owner:CHENGDU LEWEISI TECH
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