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44results about How to "Improve lightning protection performance" patented technology
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Detailed terrain data-based transmission line failure-shielding and lightning-protection performance evaluation method
ActiveCN102072992AEvaluation results are reliableImprove lightning protection performanceElectrical testingAssessment methodsTerrain
The invention discloses a detailed terrain data-based transmission line failure-shielding and lightning-protection performance evaluation method. The method comprises the following steps of: acquiring statistical lightning data of a line corridor in a specified time period by a lightning parameter statistical method by adopting line basic information, line geographic information, line structural characteristics and line insulation characteristics; scanning a three-dimensional coordinate of a transmission line corridor by using geographic information system (GIS) software; determining the landscape along a line and a ground angle according to the three-dimensional coordinate in the direction vertical to the line corridor; determining wire-to-ground height variation caused by surface undulation according to the three-dimensional coordinate in the direction along the line, and acquiring detailed terrain data along the line by three-dimensional GIS scanning; calculating the shielding failure trip-out rate of each base tower according to the detailed terrain data extracted based on the GIS scanning; and acquiring real line failure-shielding and lightning-protection evaluation data in the specified time period by comparing a design value, a specified value or an operation experience value of the line failure shielding trip-out rate with a reference value of the line failure shielding trip-out rate. Therefore, the line failure-shielding and lightning-protection performance evaluation is realized.
Owner:WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
Underground electric vehicle wireless charging device
ActiveCN104467124AImprove securityImprove lightning protection performanceBatteries circuit arrangementsCharging stationsWork statusElectric vehicle
The invention provides an underground electric vehicle wireless charging device. The underground electric vehicle wireless charging device is arranged below the ground of a parking place, and comprises a charging main machine core, charging transmitting coils, a heat dissipation circulation device and a dehumidifying device. The heat dissipation circulation device is used for dissipating heat of the charging main machine core, and the dehumidifying device is used for dehumidifying the interior of a cavity of the heat dissipation circulation device. The charging main machine core comprises an NFC module, a microcontroller, a Bluetooth communication module, a power conversion circuit, a working state indicator, a power switch controller, a wireless communication module and a metering circuit. The functions of machine starting, remote payment management and charging management can be achieved. The underground electric vehicle wireless charging device has the advantages of being high in safety and good in lightening-protection effect, occupying a few city space resources, beautifying the city environment and the like.
Owner:SHENZHEN TTK TECH
Low-voltage varistor ceramic chip and preparation method thereof, and preparation method of low-voltage varistor
ActiveCN104086170AImprove flow capacityHigh energy capacityResistor manufactureOvervoltage protection resistorsHigh energyLow voltage
The invention discloses a low-voltage varistor ceramic chip which is formed by sintering mixed powder. The mixed powder comprises, by mass, 94-96% of ZnO, 0.2-4% of Bi2O3, 0.1-0.6% of MnCO3, 0.1-2% of Co3O4, 0.1-0.6% of NiO, 0.002-0.02% of Al(NO3)3, 0.1-0.5% of TiO2, 0.01-0.5% of Nb2O5, and 0.01-2% of Sb2O3. With the low-voltage varistor, low-voltage varistor 8 / 20 [mu]s waveform through-flow performance can be well improved, and low-voltage varistor energy-bearing capacity can be improved. The high-energy low-voltage varistor has good lightening resistance. Also, the invention provides a preparation method of the low-voltage varistor ceramic chip and a preparation method of the low-voltage varistor.
Owner:GUANGDONG FENGHUA ADVANCED TECH HLDG
Tower node connection device made from composite material
The invention aims to provide a tower node connection device made from a composite material and an installation and application method. The connection device adopts all composite material for connection, and solves the influence of a metal connection member, adopted to connect a main pole and a cross arm, on the insulating performance of a composite material tower and the problems on tower weight and lightning proof arrangement brought about by the metal connection member. The device mainly comprises the main pole, a hoop and the cross arm. The hoop includes a hoop main body, an insert-connection base and a reinforcing wall. The cross arm has a round or polygonal cross section. The main pole adopts a composite material winding structure, and has a tapered whole body. The cross arm is formed by pultrusion or winding molding and has a conical or columnar structure, and the external part of the cross arm is of shed structure. The node hoop is formed by resin transfer molding, and has a boss reverse locking structure at the part insert-connected with the cross arm. The device makes full use of the insulation gap between the electrified part of the tower head and the grounding part to realize line corridor compression and lightning protection improving effects.
Owner:CHINA ELECTRIC POWER RES INST +3
Lightning protection layer stranded optical cable
InactiveCN101533136AGuaranteed tensile strengthStable structureFibre mechanical structuresYarnGlass fiber
The invention relates to a lightening protection layer stranded optical cable, comprising a cable core and a sheath sheathed outside the cable core. The cable core comprises a strengthened core and at least one fiber bundle tube composed of a loose tube and internally mounted optical fiber of the loose tube as well as a stuffer fiber paste surrounding the strengthened core; the sheath comprises a fastening yarn layer, a steel-plastic composite layer and an outer sheath that are coated on the cable core from inner to outer in turn, and water-proof fiber paste is filled between the cable core and the fasten yarn layer; the invention is characterized in that the strengthened core is a glass fiber reinforced plastic (FRP) bar; the external part of the glass fiber reinforced plastic (FRP) bar is provided with a polyethylene coating layer; a polyethylene buffer layer is installed between the fasten yarn layer and the steel-plastic composite layer; and the outer sheath is a polyethylene outer sheath. The optical cable has the following beneficial effects: the optical cable has good lightening protection performance; the polyethylene buffer layer is added and can prevent the cable core from being damaged, thereby realizing firm structure of optical cable, safe and reliable work; and the optical cable can be used in lightning-prone area, in particular being used as outdoor optical fiber of military network.
Owner:天津立孚光电科技股份有限公司
Lighting protection device
ActiveCN104332827ANo effect on service lifeAchieve automatic arc extinguishing effectOvervoltage arrestors using spark gapsElectricityEngineering
The invention relates to a lightning protection device which comprises a shell and electrodes. Arc extinguishing chambers and at least two electrode chambers are formed in the shell, the inner-wall surface of each arc extinguishing chamber is round and smooth, the arc extinguishing chambers and the electrode chambers are arranged in a staggered manner, each arc extinguishing chamber is provided with two openings which are communicated with the two adjacent electrode chambers respectively, and each arc extinguishing chamber is communicated with the outside through an arc blowing passage; a lightning receiving face is arranged at each of two ends of each electrode, the electrodes are placed in the electrode chambers, the lightning receiving faces at the two ends of the electrodes are exposed in the arc extinguishing chambers on two sides of the electrode chambers at the same time to communicate the arc extinguishing chambers on the two sides, and a flashover gap is reserved between the two lightning receiving faces in each arc extinguishing chamber. The lightning protection device is free of charge accumulation effect, less prone to being broken down under identical gap voltage and capable of improving line insulation level; especially when being on a high-voltage power distribution line network, influence on power distribution quality caused by voltage fluctuation of the power distribution network due to great lowering of voltage of the power distribution network because of frequent misoperation discharging of the lightning protection device can be avoided.
Owner:GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
Manual and electrical integral operating mechanism of 10KV vacuum circuit breaker
InactiveCN101635224AReasonable structureSmall footprintHigh-tension/heavy-dress switchesAir-break switchesRemote controlStandby power
The invention discloses a manual and electrical integral operating mechanism of a 10KV vacuum circuit breaker, which comprises a vacuum circuit breaker body and a dual-power supply switching mechanism. The dual-power supply switching mechanism comprises a main power supply terminal, a spare power supply terminal, a rotating shaft, three isolation switches, three insulation pull rods and a driving mechanism, wherein the main power supply terminal is arranged on the left side of the upper surface of a case of the vacuum circuit breaker; the spare power supply terminal is arranged on the right side of the upper surface of the case; the rotating shaft is provided with hole cavities; the three isolation switches are arranged between the main power supply terminal and the spare power supply terminal; the rotating shaft and the isolation switches are connected by the three insulation pull rods; and the driving mechanism drives the rotating shaft to rotate. Wire inlet terminals of the vacuum circuit breaker body are arranged in the middle of the upper surface of the case of the vacuum circuit breaker, and the top end of each wire inlet terminal is rotatably connected with one corresponding isolation cutter. The driving mechanism of the dual-power supply switching mechanism is a manual and electrical integral operating mechanism. The invention has simple structure and complete function and can realize intelligent and remote control.
Owner:ZHEJIANG PLEASED ELECTRIC
Composite material wing integrated fuel tank structure
ActiveCN107244409AThe overall structure is light in weightLarge fuel capacityWingsFuel tankPolysulfide
The invention discloses a composite material wing integrated fuel tank structure. The composite material wing integrated fuel tank structure comprises a front beam connector, upper skin, a front beam, lower skin, maintenance opening covers, a first wing rib, a rear beam connector, a second wing rib, a rear beam, a third wing rib and a fourth wing rib. Various components of an integrated fuel tank adopt mechanical connection; a bi-component polysulfide sealant is selected and used as a sealing agent. The wing integrated fuel tank structure is large in fuel capacity, light in structural weight, high in load capacity and convenient to maintain, and meanwhile, the composite material wing integrated fuel tank structure has good antistatic capacity and lightning protecting capacity.
Owner:CAIHONG DRONE TECH CO LTD
Lightning protection performance analysis method for graphite grounding device of power transmission line tower
InactiveCN110895300AReduce ground resistanceImprove lightning resistance levelTesting dielectric strengthComputer aided designSoil modelGrounding resistance
The invention relates to a lightning protection performance analysis method for a graphite grounding device of a power transmission line tower, and the method comprises the following steps: (1), analyzing the structure of the tower grounding device according to the grounding data of the power transmission line, changing a round steel grounding material into a graphene material, and building a grounding grid model through an SESCAD module of CDEGS simulation software; (2) introducing the soil model, calculating the power frequency grounding resistance by using an MALZ module, comparing the power frequency grounding resistance with the grounding resistance of the original round steel grounding model, and judging whether the grounding resistance of the graphite grounding device meets the standard or not; (3) aiming at the tower top lightning stroke mode, adopting ATP-EMTP software simulation to establish a line and tower model, and analyzing the influence on the lightning resistance levelunder the graphite grounding condition; and (4) modifying the lightning current amplitude for multiple times as required, and performing simulation calculation for multiple times until the lightningresistance level is obtained. According to the method, the grounding resistance can be effectively reduced, the lightning resistance level is improved, and a basis is provided for design, popularization and application of the graphene grounding device.
Owner:ECONOMIC TECH RES INST OF STATE GRID ANHUI ELECTRIC POWER +1
Construction method of solar energy lightning protection facility on building roof
InactiveCN102345331AGuarantee personal safetyGuarantee property securityBuilding material handlingLightning strokesEngineering
The invention discloses a construction method of a solar energy lightning protection facility on a building roof. The construction method comprises steps of carrying out external lightning protection and equipotential bonding on a solar energy photovoltaic power system, shielding and protecting a power circuit of the solar energy photovoltaic power system. The solar energy lightning protection facility has the characteristics of good lightning stroke resistant effect, wide application range and universality; the construction method is a fundamental measure for guaranteeing the personal safetyand property safety of building users and is an optimal means for the lightning stroke anticipating control of the solar energy facility; therefore, the construction method has the practical applicability characteristic; and the construction method has the systematic characteristic as the anticipating control is comprehensively carried out in terms of external lightning stroke anticipating control, equipotential bonding, circuit shielding, power line and signal wire protection of the solar energy facility.
Owner:ZHEJIANG XINDONGYANG CONSTR GRP
Overload and unbalanced load detecting system for railway and detecting method
PendingUS20200339167A1Improve safety performanceProtection strengthWheel-rims surveying/measuringTrack side maintainanceStructural engineeringControl theory
This application relates to an overload and unbalanced load detecting system for a railway and a detecting method. This system includes at least one steel rail. A rail web of each steel rail is provided with two sampling points at two sides between every two adjacent rail sleepers, respectively, and the two sampling points on one side are symmetrically disposed about the steel rail with respect to the two sampling points on the other side. A fiber-optic sensitive element used for continuously measuring a load when a train passes through the two sampling points is obliquely fixed at each sampling point, and two fiber-optic sensitive elements on the same side of each steel rail are disposed at an angle of 90° with each other.
Owner:BEIJING ORIENTAL RAILWAY TECH DEV CO LTD
Lightning protection device for contactless power transmission and distribution line
InactiveCN102403686ANot destroyedPreventing Lightning Disconnection AccidentsInstallation of lighting conductorsAlloyThree-phase
The invention discloses a lightning protection device for a contactless power transmission and distribution line, which comprises a lightning arrester, a striking arc electrode and a connecting plate. The lower end of the lightning arrester is connected with the striking arc electrode through the connecting plate; the striking arc electrode adopts a stainless steel alloy casting and is arc-shaped, and the distance between the lower end of the striking arc electrode and a line conductor is kept between 80-130 MM to form a discharge gap. The upper end of the striking arc electrode is fixed on a cross arm by a connecting piece; and in a three-phase line, an A phase and a C phase share a cross arm, and a B phase independently uses a cross arm. The lightning protection device is simple in structure, has low cost, solves the problems that when in long-term charged operation, the lightning arrester is easy to age, is complicated to connect, is troublesome to install and maintain and needs regular preventive test, the influence surface caused by test blackout is large and the like. The invention has the beneficial effects that the lightning protection device is not connected with a live conductor; a grounding device is not required to be reinstalled; and the lightning protection device has the advantages of long service life, no maintenance, good lightning protection effect and the like and can be widely used in the power transmission and distribution line of 35KV and 10KV overhead naked conductors or insulated conductors. The lightning protection device is convenient, simple and reliable to install, is easy to promote and use and also can utilize a pole tower to naturally ground and discharge.
Owner:LUOHE POWER SUPPLY OF HENAN ELECTRIC POWER CORP
Novel non-metal layer-twisting mining optical cable
InactiveCN103995329AEasy to stretchExcellent flattening forceFibre mechanical structuresCombustible gasEngineering
The invention relates to a novel non-metal layer-twisting mining optical cable which includes a cable core and a sheath assembly which is installed outside the cable core in a sleeved manner. The cable core includes a reinforcing core and at least one optical-fiber bushing which is twisted around the reinforcing core. A plurality of optical fibers are installed in each optical-fiber bushing and the optical-fiber array methods in the optical-fiber bushings are different. The sheath assembly includes an external sheath, a sheath, a reinforcing layer and an internal sheath. The internal sheath, the reinforcing layer, the sheath and the external sheath wrap the cable core sequentially from inside to outside. The reinforcing layer includes a plurality of stiffeners which surround the internal sheath uniformly. A cable opening rope is arranged in the external sheath. A cable paste fills a part between the cable core and the internal sheath. The stiffeners and the reinforcing cable are made of an FRP material so that the optical cable is high in tensile strength, capable of meeting demands of optical fibers with a large number of cores and preventing thunder strikes and blast of combustible gases caused by generation of static electricity, and simple to lay.
Owner:ZHEJIANG SHIP ELECTRONICS TECH
A substation with lightning strike function and a lightning protection method for the distribution box
ActiveCN109244878BLightning protectionImprove lightning protection performanceBus-bar/wiring layoutsSubstation/switching arrangement cooling/ventilationLightning strikeElectric power equipment
Owner:陕西捷亚慧电子智能科技有限公司
Silicon carbide lightning protection material and preparation method thereof
PendingCN113043702AImprove thermal conductivityImprove lightning protection performanceLamination ancillary operationsProtective equipmentCarbide siliconFiber
The invention discloses a silicon carbide lightning protection material and a preparation method thereof, and belongs to the technical field of lightning protection material preparation. The technical problem to be solved by the invention is to improve the heat-conducting property. The preparation method comprises the following steps: respectively weighing 5-25 parts by weight of silicon carbide and 75-95 parts by weight of epoxy resin, adding the weighed silicon carbide into the weighed epoxy resin under the condition of mechanical stirring, conducting stirring at normal temperature for 10-12 hours to obtain a silicon carbide epoxy resin solution, immersing carbon fibers into the epoxy resin solution to obtain a carbon fiber reinforced resin prepreg, then laying the carbon fiber reinforced resin prepreg into a carbon fiber reinforced resin prepreg plate by adopting a hand lay-up method, immersing a metal extension net into the silicon carbide epoxy resin solution, taking out the metal extension net, laying the metal extension net on the carbon fiber reinforced resin prepreg plate prepared in the step 2, carrying out vacuum hot pressing, and then conducting cooling to room temperature to obtain the silicon carbide lightning protection material. The invention is used in the field of lightning protection materials.
Owner:哈尔滨科友半导体产业装备与技术研究院有限公司
Buried Electric Vehicle Wireless Charging Device
ActiveCN104467124BImprove securityImprove lightning protection performanceBatteries circuit arrangementsCharging stationsMicrocontrollerPayment
Owner:SHENZHEN TTK TECH
Preparation method for lightning-protection semiconductor material
ActiveCN106633862AHigh loading and unloading performanceImprove lightning protection performanceInsulated cablesInsulated conductorsIonLubrication
The invention discloses a preparation method for a lightning-protection semiconductor material, belonging to the technical field of lightning-protection semiconductor materials. The preparation method provided by the invention comprises the following steps: weighing ball-milled flake graphite powder, adding the ball-milled flake graphite powder into a reaction solution of potassium dichromate and sulfuric acid so as to obtain a reactant, soaking the reactant with sodium nitrate, after the completion of soaking, carrying out calcination so as to obtain a calcined substance, mixing the calcined substance with ferric sulfate and ferric chloride, adding alkali and carrying out a reaction so as to generate ferroferric oxide, carrying out ultrasonic dispersion and crystallization so as to obtain modified expanded graphite, mixing the modified expanded graphite with polyaniline and the like, and carrying out granulation so as to obtain the lightning-protection semiconductor material. According to the invention, the flake graphite powder is used as a raw material, and the surface of the flake graphite powder is modified and loaded with nanometer ferroferric oxide, so excellent performances like electric conduction, lubrication and shapability can be achieved; charges accumulated on the surface of the semiconductor material can be remotely migrated at a constant speed; the disadvantage of imbalance of local current and ionic current on the surface of a traditional semiconductor material can be compensated; and instance results prove that the lightning-protection semiconductor material provided by the invention has the advantages of good adhesiveness with a composite material, excellent lightning-protection effect and wide economic prospects.
Owner:上海矽安光电科技有限公司
A transformer box with a lightning stroke protection function and a lightning protection method of the transformer box
ActiveCN109244878ALightning protectionImprove lightning protection performanceBus-bar/wiring layoutsSubstation/switching arrangement cooling/ventilationEngineeringTransformer
The invention discloses a transformer box with a lightning stroke protection function and a lightning protection method of the transformer box, which relates to the technical field of matching facilities of electric power equipment. The invention comprises a box body, an inner wall of the box body is fixed with a wire arranging assembly; An electric appliance mounting plate is fixed on the inner wall of the box body; A surface of that box body is fix with a plurality of first lightning protection components; A surface of that box body is fixed with a plurality of second lightning protection components; A first round rod is fixed between the second lightning protection assemblies; A surface of that box body is rotatably connected with a box door through a hinge; A surface of that box door is fixed with a door lock; A surface of that box body is fixed with a ventilation assembly; A first bracket is fixed on the opposite inner wall of the box body. A first rectangular hole is arranged onan opposite surface of the box body. The invention prevents lightning strike through double safety of the first lightning protection component and the second lightning protection component, effectively prevents rainwater from being blown into the inside of the box by the wind, and the wire management component protects electric appliances in the box fixedly, which has the advantages of safety andreliability.
Owner:陕西捷亚慧电子智能科技有限公司
Optical-power composite cable with metal sheath employing soft aluminum alloy profile conductors
InactiveCN105529102AEasy to peelEasy to bendPower cables including optical transmission elementsFlexible cablesElectrical conductorOptical power
The invention belongs to the technical field of cables, and particularly relates to an optical-power composite cable with a metal sheath employing soft aluminum alloy profile conductors. The optical-power composite cable comprises a cable core, a cable wrapping tape (3), an armor layer (5), a tearing component (4) and an outer sheath (6), wherein the tearing component (4) is located between the cable wrapping tape and the armor layer; the outer sheath (6) coats the outside of the armor layer; the optical-power composite cable is characterized in that the cable core comprises a central cable unit, three peripheral cable units and three power line units; the three peripheral cable units are distributed outside the central cable unit at intervals; each peripheral cable unit comprises two single-core cables (12), two filled ropes (11) and a cable sheath (13); each cable sheath (13) coats the outside of the corresponding single-core cables and filled ropes in an extruding manner; and the single-core cables and the filled ropes are in staggered distribution, and are twisted together. The optical-power composite cable provided by the invention has the technical effects of being easy to peel, light in weight, high in strength, good in creep resistance, soft, high in lateral pressure resistance, excellent in waterproof capability, high in universality, excellent in shielding effect, high in lightning protection performance, easy to bend and the like.
Owner:JIANGSU ZHONGLI GRP CO LTD
Tower node connection device made from composite material
The invention aims to provide a tower node connection device made from a composite material and an installation and application method. The connection device adopts all composite material for connection, and solves the influence of a metal connection member, adopted to connect a main pole and a cross arm, on the insulating performance of a composite material tower and the problems on tower weight and lightning proof arrangement brought about by the metal connection member. The device mainly comprises the main pole, a hoop and the cross arm. The hoop includes a hoop main body, an insert-connection base and a reinforcing wall. The cross arm has a round or polygonal cross section. The main pole adopts a composite material winding structure, and has a tapered whole body. The cross arm is formed by pultrusion or winding molding and has a conical or columnar structure, and the external part of the cross arm is of shed structure. The node hoop is formed by resin transfer molding, and has a boss reverse locking structure at the part insert-connected with the cross arm. The device makes full use of the insulation gap between the electrified part of the tower head and the grounding part to realize line corridor compression and lightning protection improving effects.
Owner:CHINA ELECTRIC POWER RES INST +3
Lightning-proof optical fiber communication pipeline and preparation method thereof
PendingCN111574768AGood lightning protection effectGood flame retardant performanceFibre mechanical structuresPhysicsFiber-optic communication
The invention relates to the technical field of power tubes, and particularly to a lightning-proof optical fiber communication pipeline and a preparation method thereof. The lightning-proof optical fiber communication pipeline in the invention comprises a body, wherein the outer surface of the body is coated with an insulation shielding layer with a thickness of 6-8 mm, the insulation shielding layer is prepared from a shielding filler, and the shielding filler comprises 10-15 parts of modified ceramic, 4-6 parts of flaky nanometer aluminum nitride and 3-5 parts of modified silk mica. The lightning-proof optical fiber communication pipeline prepared by the invention can bear instantaneous lightning voltage in the use process, has a good lightning-proof effect, and also has good flame retardant property.
Owner:杭州联通管业有限公司
Flexible composite film, flexible oil bag comprising flexible composite film and storage tank
PendingCN113753418AGuaranteed tightnessReduce thicknessSynthetic resin layered productsLarge containersPolyesterComposite film
The invention discloses a flexible composite film, a flexible oil bag comprising the flexible composite film and a storage tank comprising the flexible oil bag. The flexible composite film comprises a first oil-resistant layer, and a polyester woven fabric, a second oil-resistant layer, a barrier layer and a static dissipation layer which sequentially cover the inner surface of the first oil-resistant layer; and the tensile strength of the flexible composite film is greater than or equal to 92 MPa. On one hand, the flexible composite film designed by the invention not only has very good rebound resilience, but also has very strong tear and puncture resistance, the flexible oil bag formed by the flexible composite film is used for separating an oil product from the air, so that'big breathing and small breathing 'are on the same side as the air, the volatilization space is eliminated, the volatilization loss is inhibited, flammable and combustible oil gas is prevented from being formed, meanwhile, random deformation is ensured under the condition of no fracture, and the safety index is improved; and on the other hand, the flexible oil bag and the storage tank are effectively combined, so that a double-layer gap is formed between tank walls of the storage tank to monitor leakage, and the technical problems existing in the storage and transportation industry are solved.
Owner:朱喜龙 +5
Zigzag connection load balance transformer
InactiveCN106229121AEasy wiringReduce lossTransformers/inductances coils/windings/connectionsFixed transformersCurrent distributionConductor Coil
The invention discloses a zigzag connection load balance transformer which comprises an iron core, a primary side winding and a secondary side winding. The primary side winding comprises three-phase windings AN, BN and CN, star connection is adopted, a neutral point N of the primary side winding is allowed to be grounded. In the secondary side winding, a phase A winding is composed of ao, fo and be, a phase B winding is composed of bo, do and cf, and a phase C winding is composed of co, eo and ad. The secondary side winding forms a triangular winding. When ao with the same winding direction as the primary side winding is a main winding, ad and do which are in zigzag antiphase connection are additional windings; when bo is a main winding, ad and eb are additional windings; and when co is a main winding, of and fc are additional windings. The zigzag connection load balance transformer has special load current transfer characteristics, current distribution of the primary side can be improved under the conditions that a secondary side loads of a power distribution network are asymmetric, a three-phase current tends to be balanced, transformer and electric transmission line loss is reduced, the capacity utilization rate of the transformer is improved, and the electric energy loss of a line is effectively reduced.
Owner:银河电气科技有限公司
Quantitative distribution system of oil products
InactiveCN102602869ADoes not affect hair oil workGuaranteed normal hair oilLiquid transferring devicesIndustrial EthernetAutomatic control
The invention discloses a quantitative distribution system of oil products. The system realizes automatic control of quantitative distribution of oil materials. A driver manipulator is connected with an optical fiber exchange machine by an industrial Ethernet; a PLC (programmable logic controller) batch controller is also connected with the optical fiber exchange machine by the industrial Ethernet; and an oil distribution system server and an oil distribution system upper computer are connected with the optical fiber exchange machine by the industrial Ethernet in the same way. When one driver manipulator has a fault, IP addresses of PLC controllers to which other driver manipulators point are configured such that the other driver manipulators can send instructions to the PLC batch controller corresponding to the driver manipulator with the fault to enable the PLC batch controller to quantitatively control an oil distribution pipeline to distribute oil, therefore, the oil distribution operation of an oil distribution platform cannot be influenced and the normal oil distribution of an oil depot is guaranteed.
Owner:罗时金 +4
Lightning protection device
ActiveCN104332827BNo effect on service lifeAchieve automatic arc extinguishing effectOvervoltage arrestors using spark gapsElectricityHigh pressure
Owner:GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
Construction method of solar energy lightning protection facility on building roof
InactiveCN102345331BGuarantee personal safetyGuarantee property securityBuilding material handlingLightning strokesEngineering
The invention discloses a construction method of a solar energy lightning protection facility on a building roof. The construction method comprises steps of carrying out external lightning protection and equipotential bonding on a solar energy photovoltaic power system, shielding and protecting a power circuit of the solar energy photovoltaic power system. The solar energy lightning protection facility has the characteristics of good lightning stroke resistant effect, wide application range and universality; the construction method is a fundamental measure for guaranteeing the personal safety and property safety of building users and is an optimal means for the lightning stroke anticipating control of the solar energy facility; therefore, the construction method has the practical applicability characteristic; and the construction method has the systematic characteristic as the anticipating control is comprehensively carried out in terms of external lightning stroke anticipating control, equipotential bonding, circuit shielding, power line and signal wire protection of the solar energy facility.
Owner:ZHEJIANG XINDONGYANG CONSTR GRP
telescopic conductor
InactiveCN106742830BAchieve electrical continuityGood quality electrical connectionLarge containersElectrical conductorFixed frame
The invention discloses a telescopic conductor. The telescopic conductor comprises a fixed frame which is fixed on a floating roof foam weir plate of a floating roof storage tank, a short telescopic rod hinged with the top end of the fixed frame, and a long telescopic rod hinged with the bottom end of the fixed frame, the other end of the short telescopic rod is connected and fixed on the long telescopic rod with position adjustable, the other end of the long telescopic rod is connected with one supporting plate, a static piece is fixed on the supporting plate, and is contacted with the inner wall of the floating roof storage tank, the long telescopic rod and the short telescopic rod respectively comprise at least two rod sections, the two corresponding rod sections are connected by adopting a sheathing way and are elastically connected with each other by virtue of an energy storage spring, the static piece is elastically contacted and compresses the inner wall of the floating roof storage tank by virtue of elastic force of the energy storage spring, and the fixed frame and the static piece are in conductive connection. According to the telescopic conductor disclosed by the invention, conductive contact is more stable, electric connection quality is better, good conducting state is always kept, anti-static and anti-lightning effects are better, and no static or lightning hidden trouble exists, thereby being safer and securer.
Owner:上海尤杰韵机械制造有限公司
Aluminum alloy conductor coaxial electric unit type photoelectric hybrid cable
ActiveCN105529109BImprove corrosion resistanceImprove creep resistanceCoaxial cables/analogue cablesFlexible cablesElectricityElectrical conductor
The invention belongs to the technical field of wires and cables, and particularly relates to an aluminium alloy conductor coaxial electrical unit type optical power composite cable. The aluminium alloy conductor coaxial electrical unit type optical power composite cable consists of a cable core, a shielding layer (12) coated outside the cable core in an overlapping manner, and an outer sheath (13) extruded and coated outside the shielding layer in a semi-extruding process manner; rip cords (11) are arranged between the outer gap of the cable core and the shielding layer; and the cable core comprises optical cable units and power line units. The aluminium alloy conductor coaxial electrical unit type optical power composite cable is characterized in that the cable core is formed by an inner layer unit and an outer layer unit positioned outside the inner layer unit. The aluminium alloy conductor coaxial electrical unit type optical power composite cable has the beneficial technical effects of excellent corrosion resistance, light weight, low price, good creep resistance, no relaxation phenomenon of a joint at a low temperature, high shielding performance, excellent lightning resistance, good bending performance, capability of achieving one path of power supply by a single coaxial power line, and the like.
Owner:JIANGSU ZHONGLI GRP CO LTD
Lightning protection box with alarm function
InactiveCN104993468AStable structureImprove lightning protection performanceEmergency protective arrangements for limiting excess voltage/currentLightning strikeEngineering
The invention provides a lightning protection box with an alarm function, comprising a box body, a lightning protection device, and an alarm. A box cover matching the box body is arranged on the upper end of the box body. The box body is provided with an accommodating space inside. The bottom of the box body is provided with reinforcing ribs. The lightning protection device includes a fence type guider and a connector arranged on the guider. The guider and the connector are connected to the inner side of the box body or the box cover. The alarm is arranged on the outer side of the box body. The alarm is internally equipped with a communication alarm device. A power supply is arranged outside the box body, and is connected with the alarm. The lightning protection box of the invention is simple and firm in structure, has good lightning protection performance and excellent impact resistance, is conducive to improving the safety of built-in equipment, ensuring safe operation of equipment and reducing the maintenance cost, and can alarm when there is lightning strike so as to control accidents caused by lightning disaster.
Owner:柳州市蓝光电源科技有限责任公司
Manual and electrical integral operating mechanism of 10KV vacuum circuit breaker
InactiveCN101635224BReasonable structureSmall footprintHigh-tension/heavy-dress switchesAir-break switchesRemote controlStandby power
The invention discloses a manual and electrical integral operating mechanism of a 10KV vacuum circuit breaker, which comprises a vacuum circuit breaker body and a dual-power supply switching mechanism. The dual-power supply switching mechanism comprises a main power supply terminal, a spare power supply terminal, a rotating shaft, three isolation switches, three insulation pull rods and a drivingmechanism, wherein the main power supply terminal is arranged on the left side of the upper surface of a case of the vacuum circuit breaker; the spare power supply terminal is arranged on the right side of the upper surface of the case; the rotating shaft is provided with hole cavities; the three isolation switches are arranged between the main power supply terminal and the spare power supply terminal; the rotating shaft and the isolation switches are connected by the three insulation pull rods; and the driving mechanism drives the rotating shaft to rotate. Wire inlet terminals of the vacuum circuit breaker body are arranged in the middle of the upper surface of the case of the vacuum circuit breaker, and the top end of each wire inlet terminal is rotatably connected with one corresponding isolation cutter. The driving mechanism of the dual-power supply switching mechanism is a manual and electrical integral operating mechanism. The invention has simple structure and complete functionand can realize intelligent and remote control.
Owner:ZHEJIANG PLEASED ELECTRIC
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