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Direct-current micro-grid system and control method thereof
InactiveCN103236712AMeet power needsGuaranteed uptimeSingle network parallel feeding arrangementsEnergy storageControl systemPower grid
The invention relates to a direct-current micro-grid system and a control method thereof. The direct-current micro-grid system comprises a direct-current power distribution circuit, a bi-directional AC / DC (alternating current / direct current) rectifying / inverting device, a distributed energy generating device, an energy storing device, direct-current loads, alternating-current loads, a urban microclimate interactive system, a clock interactive system, a micro-grid control system and micro-grid protecting devices, an upper scheduling management system is arranged in the micro-grid control system so as to form layered management for micro-grid energy. The direct-current micro-grid control method includes: entering a grid connection mode or an island model according to working state of a large power grid, and determining the working states of the energy storing device and the distributed energy generating device according to information of the urban microclimate interactive system and the clock interactive system. The direct-current micro-grid system can independently supply power to the alternating-current and the direct-current loads and can be connected with a power grid to generate power according to processed result of urban microclimate interactive information, so that requirements on power supply for users are met, cost is reduced, designing, controlling, operation and maintenance of a micro-grid are benefited, and reliability, economy and efficiency of the micro-grid are effectively improved.
Owner:JIAXING QINGYUAN ELECTRICAL TECH
Server device
ActiveUS7804690B2Easy to liftSave installationDigital data processing detailsFurniture partsEngineeringServer appliance
Owner:ALPHA NETWORKS INC
Server device
ActiveUS20090190301A1Easy to liftShorten the timeDigital data processing detailsFurniture partsEngineeringServer appliance
The present invention relates to a server device which comprises a case having two symmetric slots disposed on the top and a first handle disposed in each of the slots to make it easier to lift up the server device, a horizontal partition disposed in the case and dividing the inner space of the case into upper and lower parts, wherein the upper part is a first holding space capable of holding at least an electronic device, a first heat dissipation unit is disposed at the front of the electronic, the lower part of the case is a second holding space capable of holding at least a server, and a second heat dissipation unit may be disposed at one side of the second holding space, such that a plurality of servers, electronic devices and heat dissipation units may be integrated into the server device for easily and conveniently being moved.
Owner:ALPHA NETWORKS INC
Precast concrete retaining wall
InactiveUS20140270990A1Reduce installation costsLow transportation costArtificial islandsExcavationsRebarPrecast concrete
A retaining wall comprises a precast concrete face panel with integral counterfort connected to the rear of the facing and a precast concrete base supporting the facing and the counterfort. The counterfort comprises a reinforced concrete slab having a substantially vertical front portion at a substantially right angle to a base portion, and a rear portion running from substantially the top of the counterfort to the rear of the base portion thereof. The face and counterfort module is connected to the base module through the use of rebar and openings which are fixedly attached together using a high strength group.
Owner:UTILITY CONCRETE PROD
Method for controlling electronic power steering system of vehicle without sensor
InactiveCN101691124ASave installationEliminate the tedious process of debuggingSteering linkagesAutomatic steering controlTurn angleState-space representation
The invention provides an electronic power steering EPS system of a vehicle without a sensor and a control method thereof. The method comprises the following steps: 1, saving a torque sensor of a steering column, an angle sensor of the steering column and a rotor angle sensor of a booster motor in the prior electronic power steering EPS system for the vehicle; and 2, realizing control of the electronic power steering system by adopting a new control method. The torque and the turn angle of the steering column and a rotor turn angle of the booster motor, which are required for the control of the EPS system is calculated by establishing a state-space mathematical model of the electronic power steering system of the vehicle without the sensor, using current of the booster motor (state component of a system) as measurement input and observing the state components of other systems by an improved Kalman observer algorithm, and thus, the boost torque of the booster motor controlled by a closed loop control system of the EPS without the sensor is established. The method simplifies the structure and manufacturing difficulty of a steering gear box, improves the reliability of the system, reduces complexity of the EPS system and greatly reduces the cost of the EPS system.
Owner:CHONGQING UNIV
Continuous laying and water-saving pressure testing construction method of long-distance water pipe
InactiveCN105570533AOmit productionSave installationPipe laying and repairFluid-tightness measurement using fluid/vacuumWater savingPipe water
The invention discloses a continuous laying and water-saving pressure testing construction method of a long-distance water pipe. The method comprises the steps of designing and manufacturing of a fabricated pipe pressure testing device, groove excavation, mounting of the water pipe, mounting of the fabricated pipe pressure testing device, construction of a water filling system, pipe water filling, pipe pressure testing, drainage and pipe connection. The defects in the traditional pressure testing technology are overcome, a large number of waste resources can be saved, pipe laying construction does not need to be stopped during pressure testing, and the method has the beneficial effects that the construction progress is quick, construction is safe and reliable, and construction cost is reduced.
Owner:ANHUI SHUIAN CONSTR GRP CO LTD
Method for confirming positions of upper and lower jaws by adopting 3D printing complete denture individual tray
ActiveCN106901854AEasy and precise to makeSave installationDental articulatorsEducational modelsDenturesEngineering
Owner:TONGJI UNIV
Tower cylinder overturning device and hoisting method for tower cylinder
ActiveCN106744312ASave installationEliminates disassembly workWind motor assemblyTowersPulp and paper industryTower
The invention provides a tower cylinder overturning device and a hoisting method for a tower cylinder. The tower cylinder overturning device comprises a base, an overturning bracket and a hydraulic supporting device. One end of the overturning bracket is in pivot connection with the base, and the overturning bracket can be overturned to a horizontal state from a vertical state. The overturning bracket comprises a supporting plate supporting part and a side supporting part. The upper surface of the bracket supporting part is used for supporting the bottom of the tower cylinder in the axial direction, and the side supporting part is used for supporting the side wall of the tower cylinder in the radial direction. According to the tower cylinder overturning device, the bracket supporting part supports the bottom of the tower cylinder, the side supporting part supports the side wall of the tower cylinder, after the tower cylinder overturning device is connected with the bottom of the tower cylinder in a butting manner, by means of the action of a crane, the tower cylinder can be hoisted into the vertical state from the horizontal state, and then the crane hoists and installs the tower cylinder.
Owner:XINJIANG GOLDWIND SCI & TECH
Integral type level oil extraction wellhead equipment
ActiveCN101644149ASimplify follow-up workover operationsSimplify workover operationsSealing/packingLine tubingTubing hanger
The invention relates to integral type level oil extraction wellhead equipment, applied to ocean platform oil extraction. An upper cavity, a middle cavity and a lower cavity are arranged in a wellheadbody. The lower end of the upper cavity and the lower end of the middle cavity are respectively provided with a conical surface circular bead. An oil pipe hanger is arranged in the upper cavity. Thelower end of the oil pipe hanger is connected with screw threads used for connecting the oil pipe. The oil pipe hanger has an oil outlet channel. A pneumatic-hydraulic safety valve and a throttle valve are fixed on the outer wall of the wellhead body. A reduced flange, a paraffin removal valve and a tree cap are arranged on the upper end of the wellhead body. A completion sleeve hanger and a middle sleeve hanger are arranged in the middle cavity of the wellhead body. A WD sleeve hanger is arranged in the lower cavity of the wellhead body. The invention has the effects that: an integral hangingstructure with three hangers lowers the height of the wellhead and simplifies the installation procedure. A Christmas tree and relevant associated lines do not need to be removed during the subsequent workover job, thereby simplifying workover operation, saving disassembly and assembly time and simplifying the later workover operation.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1
Mounting method for drum washing machine counter weight and mounting structure thereof
ActiveCN101078164AReduce settingsReduce processOther washing machinesTextiles and paperEngineeringComputer engineering
The installing method and installing configuration of match weight block for the barrel roller washing machine, its configuration consists of the outer case of the washing machine, a weight match block on which there are installing holes. There is fixed device incorporated with case for the installing of the weight match block which is installed on the fixed device through the installing holes, and the weight match block can fix on the case of the washing machine by the tighten fixed device. This invention can obtain a more convenient installing method by the replacement of the bolt device by the swell blot on the base of no changing the current configuration of the weight match block. It can save the cost, process and working intensity largely.
Owner:HAIER GRP CORP +1
Wind/solar hybrid generation control method and system with function of reactive self-compensation
ActiveCN105186969AAvoid lostReduce workloadPV power plantsReactive power adjustment/elimination/compensationPower qualityTransformer
The invention discloses a wind / solar hybrid generation control method and system with a function of reactive self-compensation. The method employs a method of reactive signal averaging, and employs the coordination of a plurality of photovoltaic power generation units at a wind / solar hybrid generation station for active / reactive control. A wind power generation unit outputs electric energy, and the quality of electric energy is solved at a high-voltage side of a draught fan box-type transformer. The photovoltaic power generation units achieve the active / reactive regulation of the whole power station. Reactive power compensated by a photovoltaic array is uniformly distributed to each unit photovoltaic power generation system. Each device of the whole power generation system is used reasonably, thereby achieving the reactive self-compensation of a wind / solar hybrid generation system, and achieve a purpose of maximizing benefits in a life cycle of the devices. The system makes the most of characteristics of two types of energy, reasonably uses each device of the system from the aspect of the whole power generation system, achieves the purpose of maximizing benefits in the life cycle of the devices, saves a dedicated reactive compensation device, reduces the initial investment, and improves the utilization rate of devices.
Owner:CEEC HUNAN ELECTRIC POWER DESIGN INST +1
Gas density relay free of detachment in verification process
ActiveCN104299843AOvercome the problem of large size and cannot be installed in many placesSave installationElectric switchesEmergency protective devicesEngineeringSignal generator
The invention discloses a gas density relay free of detachment in the verification process. The gas density relay comprises a shell, a base, a pressure detector, a temperature compensation element, a machine core, a pointer, a dial, a plurality of signal generators and a device connection connector, wherein the base, the pressure detector, the temperature compensation element, the machine core, the pointer, the dial, the signal generators and the device connection connector are arranged in the shell. The gas density relay further comprises a verification connector and a valve, wherein one end of the valve is communicated with the device connection connector, the other end of the valve is communicated with the verification connector, and the verification connector is communicated with the pressure detector through the base. The gas density relay has the advantages that basically like an ordinary density relay, the gas density relay can be installed on any occasion, and the problem that due to the fact that the size of a valve connector is large, the gas density relay can not be installed in many places is thoroughly solved; an additionally-arranged valve type three-way connector can be omitted, materials are greatly saved, the gas density relay has quite high environmental protection value, and meanwhile the gas density relay saves cost and is beneficial to application and popularization; the gas density relay is good in sealing performance, high in safety coefficient, simple in structure and small in size.
Owner:SHANGHAI ROYE ELECTRICAL CO LTD
System and method for evidence obtaining in water body pollution-discharge cruise monitoring
ActiveCN104199406AHelp meet emission standardsHelp the situationProgramme total factory controlData acquisitionDischarge data
The invention discloses a system for evidence obtaining in water body pollution-discharge cruise monitoring. The system comprises a housing, as well as a pollution-discharge information obtaining unit, a data acquisition and processing unit, an underwater video camera, a control unit, a wireless communication unit and a power propeller which are installed on the housing, wherein the data acquisition and processing unit is used for calculating a pollutant concentration value or the standard-exceeding degree of a comprehensive toxicity index according to the water body pollution-discharge data obtained by the pollution-discharge information obtaining unit in real time, and sending to the control unit; the control unit is used for starting the underwater video camera to carry out pollution-discharge process shooting evidence obtaining while identifying that the concentration value of the pollutants discharged by a water area or the standard-exceeding degree of the comprehensive toxicity index achieves the maximum value. The system disclosed by the invention is capable of carrying out cruise monitoring on the hidden illegal pollutant discharge and sudden water pollution of various water bodies with a single pollutant discharge port or water intake port, realizing space-time continuous coverage monitoring for large-area water areas, a plurality of pollutant discharge ports and sudden water pollution through system marshalling, and avoiding the law enforcement supervision blind areas of water conservancy and environmental protection departments on water body hidden pollution and other illegal pollutant discharge behaviours.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
Tin-plated copper-coated brass wire and production method thereof and tin plating device
InactiveCN103325439ASolderableAnti-sulphurizationSingle bars/rods/wires/strips conductorsCable/conductor manufactureTinningVulcanization
The invention discloses a tin-plated copper-coated brass wire and a production method thereof and a tin plating device used in a production process. The tin-plated copper-coated brass wire comprises a brass wire body, a copper layer and a tin layer, wherein the outside of the brass wire body is plated with the copper layer, and the outside of the copper layer is plated with the tin layer. The tin-plated copper-coated brass wire not only has weldability, vulcanization resistance, electrical conductivity, oxidation resistance and the like of round tin-plated soft copper wires, but also can save copper resources and is easy and convenient to install. A plating method of hot tinning is adopted in a tinning step, no waste water is generated or discharged in the whole process, and no pollution will be caused to the environment. Meanwhile, the method of hot tinning is adopted, and therefore the tin layer is better in adherence and continuity and more uniform in thickness. When a tin-coated sizing mold used for the tin-plated copper-coated brass wire is compared with asbestos used in the prior art, the steps of tinning are simplified, the plating layers are better in adherence and continuity and more uniform in thickness, and the photometric brightness of the appearance of the tin-plated copper-coated brass wire obtained in the production method is better.
Owner:ANHUI WANGDA COPPER DEV
Special-shaped member turnover device and turnover device thereof
ActiveCN104828526ASave installationSave extra spaceConveyor partsEngineeringElectrical and Electronics engineering
The invention provides a special-shaped member turnover device and a turnover device thereof. The special-shaped member turnover device comprises a base, arc guide rails, limitation plates, support plates and positioning blocks. The arc guide rails and the support plates are fixedly arranged on the base; the arc guide rails are of an arc groove structure and are in interval arrangement with the support plates; the limitation plates are fixedly arranged on the support plates and are used for limiting the turnover of special-shaped members; the special-shaped members are arranged on the arc guide rails through the head ends of the arc guide rails, and can slide in arc space formed by the limitation of the limitation plates along the arc guide rails; and the positioning blocks are arranged at the tail ends of the arc guide rails, and are used for positioning the overturned special-shaped members. According to the special-shaped member turnover device and the turnover device thereof, turnover and positioning of the special-shaped members can be realized; the effects of simple structure and flexible operation can be achieved; and external power is not needed.
Owner:GOERTEK INC
POS cash withdrawal method based on human body biological characteristic recognition and non-repudiation technology
InactiveCN106779665ASave investmentCut costsPoint-of-sale network systemsCoded identity card or credit card actuationHuman bodyPayment
The invention discloses a safe POS cash withdrawal method based on human body biological characteristic recognition and a non-repudiation technology. The method specifically comprises the steps that firstly, a camera is started to perform whole-course sound and video recording when a service is initiated; a merchant acquires serial numbers of banknotes and recognizes character information of the serial numbers by using a terminal device; a payment bill is generated and wirelessly transmitted to POS machine in a short range; then a user is prompted to perform POS card swiping payment or signature confirmation according to information of the received payment bill; the customer identity is verified by using a face recognition and / or voiceprint recognition and / or handwritten signature verification technology at the same time; and finally, the merchant gives the banknotes to the customer if the identity is confirmed without an error; and sound and video recording is terminated, and the transaction is completed. According to the invention, banknote serial number recognition and human body biological characteristic recognition technologies are applied to POS machine card swiping and cash withdrawal for the first time, the merchant can provide a safe and convenient cash withdrawal function for customers without a need of purchasing large bank equipment, and a problem of difficult small-amount cash withdrawal of users in remote areas is solved.
Owner:GUANGDONG MICROPATTERN SOFTWARE CO LTD
Refrigerating appliance
ActiveCN101999065AAvoid assembly workAvoid leaningLighting and heating apparatusDrawersBiomedical engineering
Owner:BSH BOSCH & SIEMENS HAUSGERAETE GMBH
Combined centrifugal extractor
InactiveCN104874201AClosely connectedReduce resistanceLiquid solutions solvent extractionCentrifugesEngineeringCentrifugal extractor
The present invention relates to the technical field of liquid-liquid separation, and specifically discloses a combined centrifugal extractor, which comprises a driving device, a synchronous transmission mechanism, and a plurality of centrifugal extractors connected in series, wherein the driving device is connected with the plurality of the centrifugal extractors through the synchronous transmission mechanism so that the plurality of the centrifugal extractors can perform synchronized operation. According to the present invention, the plurality of the centrifugal extractors are combined to form the integration, and the synchronized operation of the plurality of the centrifugal extractors is achieved by the synchronous transmission mechanism so as to achieve the simultaneous control on the plurality of the centrifugal extractors and effectively improve the extraction effect and the extraction efficiency; and the assembled, modular and skid-mounted design is used and the extractors are compactly connected so as to provide the strong integrity, reduce the occupation area, shorten the length of the connection pipeline, simplify the pipeline structure, reduce the pipeline resistance, reduce the flow loss inside the pipeline, reduce the energy consumption, save the production cost, substantially reduce the on-site construction amount, and rapidly and conveniently install and disassemble.
Owner:THUNIP CORP LTD
Coated wafer level camera modules and associated methods
ActiveCN1917224ASave installationReduce complexityTelevision system detailsSemiconductor/solid-state device detailsCamera moduleEngineering
Coated wafer level camera modules and associated methods are disclosed. One aspect of the invention is directed toward a wafer level camera module that includes a die having multiple image sensor integrated circuits. The module can further include a coating covering at least a portion of the die. The coating can be configured to provide at least a partial shield against selected types of electromagnetic energy. The module can still further include multiple contacts positioned to electrically couple the integrated circuits to a support. In certain embodiments, the selected types of electromagnetic energy can include one or more selected frequencies of light.
Owner:OMNIVISION TECH INC
Apparatus used on spinning room preparation machine
ActiveCN101654819ASavings RegulatorSimplified adjustment procedureSafety devices for fibre treatmentDrafting machinesFiberEngineering
An apparatus used on a spinning room preparation machine, which is specially a carding mechine, a draw frame, a combing machine or a bobbiner and has a drafting mechanism for drafting strand fibre materials, has a pair of scanning rollers pressed against one another for continuously recording the cross-sectional area and / or fibre amount of at least one fibre strip, wherein one of the rollers is immovable and the other roller is arranged that it can deviate from the immovable roller. The apparatus has a non-contact spacing sensor for measuring the spacing from the corresponding surface (sensedsurface), used to be integrated into the holding element of one of the rolls. In order to arrange the spacing sensor in simple modus specially in limited spacing and improve the connection between thespacing sensor and the sensed surface, the spacing sensor and the corresponding surface are arranged at the mutually faced lateral parts of the holding element.
Owner:TRUETZSCHLER GRP SE
Integrated control system for automobile exhaust emission
InactiveCN106150614AAvoid bumpingEasy to bumpExhaust apparatusSilencing apparatusControl systemComputer module
The invention provides an integrated control system for automobile exhaust emission. The bottom edge of a support assembly extends to form a bracket, and a frame structure is arranged on the other edge of the support assembly. A urea box is arranged on the bracket, and a liquid level sensor assembly is arranged at the top of the urea box. The side face of the urea box makes contact with the frame structure, a U-shaped fixing plate is arranged at a gap in the frame structure, a urea metering pump is arranged on the U-shaped fixing plate, and an exhaust hole of the urea metering pump is fixed downwards. An electromagnetic heating valve is arranged in the position, located above the urea metering pump, of the gap in the frame structure, and environment temperature sensors are arranged in the position, located below the urea metering pump, of the gap in the frame structure and the two sides of the upper portion of the frame structure as required. DCU aftertreatment control modules are mounted on the left side edge and the right side edge of the frame structure through module mounting supports correspondingly. All the modules are connected through circuits and pipelines for integrated output. The integrated control system has the characteristics of being compact in structure, high in universality, convenient to mount and use, capable of shortening mounting time and trouble shooting and eliminating time, and the like. The usability and popularization of the integrated control system can be greatly improved.
Owner:SHIYAN ANLIAN AUTO PART CO LTD
Nearby emergency oil containment boom for ship body damaged oil spillage
ActiveCN105297692ASolve the problem of excessive control areaStorage takes up little spaceWater cleaningGeneral water supply conservationMarine engineeringElectromagnetic absorption
The invention provides a nearby emergency oil containment boom for ship body damaged oil spillage. The nearby emergency oil containment boom comprises two parts, namely a self-inflating oil containment boom main body and electromagnetic absorption type ship body connectors. The self-inflating oil containment boom main body is composed of a plurality of oil containment boom units of a hard structure; for storage, various units can be folded mutually to occupy a tiny space and thus can be readily carried on a ship to cope with emergencies. The self-inflating oil containment boom main body is connected with fast joints of two electromagnetic absorption type ship body connectors through fast joints on the two ends of the self-inflating oil containment boom main body, respectively; the two connectors are fixed in appropriate positions on the two sides of a ship body damaged position. In case of a ship accident, the nearby emergency oil containment boom for ship body damaged oil spillage is capable of quickly containing a water surface within a nearby distance range of the ship body damaged position; in case of oil spillage, oil spillage can be contained within a small distance range nearby the ship body. The nearby emergency oil containment boom for ship body damaged oil spillage can be laid in two manners: one is a conventional stretching laying manner, while the other one is a semi-folding oil containment boom unit stretchable laying manner.
Owner:HARBIN ENG UNIV
Automatic-temperature-control electrothermal coating for ice removal and prevention of railway vehicles, and preparation method and application thereof
ActiveCN109111841AGuarantee normal feverReduce thicknessPolyurea/polyurethane coatingsEpoxy resin coatingsTemperature controlConductive materials
The invention provides an automatic-temperature-control electrothermal coating for ice removal and prevention of railway vehicles, and a preparation method and application thereof. The automatic-temperature-control electrothermal coating comprises 15% to 58% of matrix resin, 0.5% to 17% of a curing agent, 5% to 40% of a conductive material, 1% to 22% of an auxiliary agent, and 18% to 70% of a solvent.
Owner:METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI +3
Prefabricated capillary energy-storage heat-dissipation wall
ActiveCN104294958ARenovation investment is smallEven distribution of water flowDispersed particle filtrationWallsElectricityThermal insulation
The invention relates to a prefabricated capillary energy-storage heat-dissipation wall. The prefabricated capillary energy-storage heat-dissipation wall comprises a concrete wall, the concrete wall is sequentially provided with a first tempered glass layer, a second tempered glass layer, a first-stage dedusting filter screen, a second-stage dedusting filter screen, an air adsorption layer, a passive heat source ground heating capillary pipe net, thermal insulation materials and a wall body capillary pipe net from outside to inside. The periphery of the first tempered glass layer and the periphery of the second tempered glass layer are sealed through first sealing glue to form a closed first air layer, a closed second air layer is formed between the first-stage dedusting filter screen and the second tempered glass layer, the periphery of the first-stage dedusting filter screen and the periphery of the second-stage dedusting filter screen are sealed through second sealing glue to form a closed third air layer, the second-stage dedusting filter screen is in close contact with the air adsorption layer, and the capillary pipe nets are in close contact with the air adsorption layer. The prefabricated capillary energy-storage heat-dissipation wall is convenient to install and use and low in cost, strong air and noise pollution can be avoided, the electricity consumption is small, and energy is saved.
Owner:安徽中宝建材科技有限公司
Self-cleaning tap for water purifier
ActiveCN106439074AGuaranteed cleanlinessSolve cleanlinessCleaning using toolsSlide valveWater purification filterFilter element
The invention relates to a self-cleaning tap for a water purifier. The self-cleaning tap comprises a water inlet pipe; the upper part of the water inlet pipe is sleeved with an adjuster; the bottom end of the water inlet pipe is sleeved with a pressure maintaining valve element; water outlet holes communicating with the water inlet pipe are formed in the pressure maintaining valve element; buckles are arranged on the periphery of the pressure maintaining valve element; an elastic piece is arranged between the adjuster and the pressure maintaining valve element and outside the water inlet pipe; the adjuster and the pressure maintaining valve element are sleeved with a shell; a slide rail matched with the buckles is arranged on the inner side surface of the shell; the adjuster adjusts the sizes of the water outlet holes in a manner that the elastic piece pushes the buckles on the pressure maintaining valve element to rotate along the slide rail of the shell and move up and down; a filter element is arranged in a part, below the pressure maintaining valve element, in the shell; a water collecting cavity is formed between the filter element and the pressure maintaining valve element; a cleaning device capable of being in vertical sliding fit with and rotating synchronous with the pressure maintaining valve element is arranged between the filter element and the shell; the shell is provided with an openable and closeable discharge port corresponding to the bottom end of the cleaning device; and water outlet ends are arranged under the filter element.
Owner:FUZHOU PINXING TECH DEV
Load identification and multi-sensor fusion sensing method and device
PendingCN114498933AImprove the recognition rateAchieve decompositionCurrent/voltage measurementPower network operation systems integrationInformation processingElectric power system
The invention discloses a load identification and multi-sensor fusion sensing method and device, and belongs to the technical field of power monitoring, and the method comprises a power monitoring unit which is used for installing one or more intelligent sensors on an existing power grid to carry out the monitoring and collection of current and voltage; information processing: processing the acquired information by using algorithms of different theories; in the sensing fusion process, complete information about electric power is obtained by using a plurality of sensors, and the survival ability of an electric power system is enhanced in the aspects of detection, tracking and electric power identification by using a multi-sensor data fusion technology. Through reasonable control and use of multiple sensors and observation information thereof, redundant or complementary information of the multiple sensors in space or time is combined according to a certain criterion so as to obtain consistent explanation or description of a tested object, data is processed based on NILM, decomposition and analysis of a power grid can be realized, and the reliability of the power grid is improved. And the limitation when load identification is carried out by using the load steady state characteristic information can be overcome to a certain extent.
Owner:AEROSPACE SCI & IND SHENZHEN GROUP +1
Wire-shell integrated water-cooling pouring type transformer and manufacturing method thereof
InactiveCN103440968AMeet needsSolve complex puzzlesTransformers/inductances coils/windings/connectionsCoils manufactureEpoxyTransformer
The invention discloses a wire-shell integrated water-cooling pouring type transformer and a manufacturing method thereof, and belongs to the field of power electronics. The wire-shell integrated water-cooling pouring type transformer comprises an iron core, a primary winding, two secondary windings and four water connectors. Bolts and clamping pieces clamp and fix the first secondary winding and the second secondary winding to an insulating base plate, a baffle is additionally arranged on a butting face between the first secondary winding and the second secondary winding, and therefore enough insulating space is kept. The first secondary winding, the second secondary winding and the base plate form a pouring shell. The primary winding is placed into the pouring shell, epoxy glue is poured in the shell, and therefore the primary winding is fixed into the shell to be a whole. The water connectors are installed after solidification. According to a product schematic diagram and an assembling diagram, 5' is connected with 5', and two whole turns of the secondary windings are achieved. According to the wire-shell integrated water-cooling pouring type transformer and the manufacturing method thereof, the secondary windings, a water-cooling system and the shell are integrated, the problems that a traditional single-phase high-frequency water-cooling pouring transformer is large in size, large in occupied space and high in cost are overcome, and the problem that a single-phase high-frequency water-cooling pouring transformer in the field of power electronics is complex in structure is solved.
Owner:NINGXIA YINLI ELECTRICAL CO LTD
Combined beam of engineered wood, profiled steel sheet and light-weight aggregate concrete and production and installation method of combined beam
Owner:NANJING UNIV OF TECH
Portal crane
The invention discloses a portal hoist which belongs to the technical field of hydraulic equipment and comprises a main walking mechanism, wherein the main walking mechanism is arranged at the lower part of a bottom crossbeam of a portal crane and comprises at least four wheel sets, a pivoting support is arranged at the top of each wheel set, an inner rim and an outer rim of the pivoting support are respectively connected with the bottom crossbeam of the portal crane and the top plates of the wheel sets, and the pivoting supports and the wheel sets are driven to rotate through a swing mechanism fixedly connected with the bottom crossbeam. The wheel sets are driven to rotate through the swing mechanism so as to realize the turning of the wheel sets, thereby realizing the turning of the mainwalking mechanism of the portal crane, leading the portal crane to conveniently reach working sites on different straight lines for working, realizing the purpose that one portal hoist can carry outhoisting or equipment loading and unloading for the sluice gates of multiple buildings at different positions of one hydraulic and hydroelectric pivotal project, and greatly saving the project investment.
Owner:水发机电集团有限公司
Method to rotate the rotor of a wind turbine and means to use in this method
ActiveUS20130069373A1Time consumingSave installationEngine manufactureFinal product manufactureWind forceStator
A direct driven wind turbine includes an electrical generator with a rotor and a stator, a hub constructed to receive a rotor blade, and an actuator device. The hub is connected to the rotor of the electrical generator. The hub and the rotor of the electrical generator are rotatable mounted in respect to the stator of the generator. The actuator device is constructed and arranged to rotate the rotor of the electrical generator and the hub of the wind turbine in respect to the stator of the electrical generator, wherein the actuator device is at least one motor.
Owner:SIEMENS GAMESA RENEWABLE ENERGY AS
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