Patents

Literature

Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.

41results about How to "Efficiency unchanged" patented technology

Filter

Efficacy Topic

Property

Owner

Technical Advancement

Application Domain

Technology Topic

Technology Field Word

Patent Country/Region

Patent Type

Patent Status

Application Year

Inventor

Estimation method for radiator efficiency of oil-immersed power transformer

ActiveCN104361243AEfficiency unchangedEasy to grasp the load capacityTransformers/inductances coolingSpecial data processing applicationsEstimation methodsTransformer

The invention discloses an estimation method for radiator efficiency of an oil-immersed power transformer. The estimation method comprises the following steps: calculating average load loss of a to-be-estimated transformer in a specified period of time and adding nameplate no-load loss to the average load loss to obtain average total loss power; calculating average after-power of the to-be-estimated transformer in the specified period of time; supposing the radiator efficiency of the to-be-estimated transformer, calculating average radiating power of a radiator of the to-be-estimated transformer in the specified period of time; subtracting the average after-power from the average total loss power and dividing by the average radiating power to reversely calculate the radiator efficiency of the to-be-estimated transformer according to the energy consumption balance relationship that the difference of the average total loss power and the average radiating power is equal to the average after-power. According to the estimation method, the calculation of the radiator efficiency can be realized to master the loading capacity of the transformer so as to solve the problem of insufficient radiator efficiency of the transformer; the estimation method adapts to the transformer provided with the radiator, and can also provide a basis for calculating the temperature rise of top oil of the transformer.

Estimation method for radiator efficiency of oil-immersed power transformer

View all

Owner:STATE GRID CORP OF CHINA +2

Motor and motor stator

ActiveCN104617688AIncrease the effective areaEfficiency unchangedMagnetic circuit stationary partsPhysicsStator

The invention discloses a motor and a motor stator. The stator comprises a stator core and a varnished wire, wherein the stator core comprises a polygonal shape yoke part and multiple stator teeth, multiple installation and position holes are formed on the yoke part and peripherally spaced, a stator slot is defined between each two adjacent stator teeth, the minimum distance between the bottom of the stator slot and the peripheral wall of the corresponding yoke part is H1, the minimum distance between the inner wall of any one installation and position hole and the bottom of the nearest stator slot is H2, the minimum predetermined thickness of the yoke part is H0, H1, H2 and H0 are equivalent, and the stator slot comprises a first stator slot and a second stator slot both which are different in slot shape; the varnished wire passes through said multiple stator slots and is wound on said multiple stator teeth. According to the stator, the effective area of the stator slot is increased.

View all

Owner:GUANGDONG WELLING ELECTRIC MACHINE MFG +1

Estimation method for cooler efficiency of oil-immersed power transformer

ActiveCN104361241AEfficiency unchangedEasy to grasp the load capacityTransformers/inductances coolingSpecial data processing applicationsEstimation methodsEngineering

The invention discloses an estimation method for cooler efficiency of an oil-immersed power transformer. The estimation method comprises the following steps: calculating average load loss of a to-be-estimated transformer in a specified period of time and adding nameplate no-load loss to the average load loss to obtain average total loss power; calculating average after-power of the to-be-estimated transformer in the specified period of time; supposing the cooler efficiency of the to-be-estimated transformer, calculating average cooling power of a cooler of the to-be-estimated transformer in the specified period of time, and subtracting the average after-power from the average total loss power and dividing by the average cooling power to reversely calculate the cooler efficiency of the to-be-estimated transformer according to the energy consumption balance relationship that the difference of the average total loss power and the average cooling power is equal to the average after-power. According to the estimation method, the calculation of the cooler efficiency can be realized to master the loading capacity of the transformer so as to solve the problem of insufficient cooler efficiency of the transformer; the estimation method adapts to the transformer provided with the cooler, and can also provide a basis for calculating the temperature rise of top oil of the transformer.

Estimation method for cooler efficiency of oil-immersed power transformer

View all

Owner:STATE GRID CORP OF CHINA +2

Radio frequency power amplification circuit

ActiveCN105915189AChange load impedanceEfficiency unchangedHigh frequency amplifiersPower amplifiersRadio frequencyCenter tap

The present invention discloses a radio frequency power amplification circuit. The radio frequency power amplification circuit comprises a first switch group, a second switch group, an impedance switching unit, a third switch, a fourth switch and a fifth switch; one terminal of the first switch group is connected with one differential input terminal of the circuit, and the other terminal of the first switch group is connected with a first balanced differential port of the impedance switching unit; one terminal of the second switch group is connected with the other differential input terminal of the circuit, and the other terminal of the second switch group is connected with a second balanced differential port of the impedance switching unit; one terminal of the third switch is connected with a power supply, and the other terminal of the third switch is connected with the first balanced differential port of the impedance switching unit; one terminal of the forth switch is connected with the power supply, and the other terminal of the fourth switch is connected with the second balanced differential port of the impedance switching unit; one terminal of the fifth switch is connected with a center tap port of the impedance switching unit, and the other terminal of the fifth switch is connected with the power supply; and impedance conversion of the impedance switching unit is controlled through on or off of the first switch group, the second switch group, the third switch, the fourth switch and the fifth switch.

View all

Owner:HISENSE VISUAL TECH CO LTD

Blue cover plate glass for photovoltaic building integration and preparation method of blue cover plate glass

InactiveCN112071930AImprove processing resistanceEfficiency unchangedCoatingsPhotovoltaic energy generationBuilding integrationSolar light

The invention relates to the technical field of photovoltaic modules, in particular to blue cover plate glass for photovoltaic building integration and a preparation method of the blue cover plate glass. The blue cover plate glass for photovoltaic building integration is composed of a glass substrate, a color layer and a protective layer which are arranged from bottom to top. A film layer materialof the color layer is one of or a mixture of more of SiO2, TiO2, ZnO, Si3N4, MgF2, SnO and Nb2O5, and the thickness of the film layer material is 80-200 nm; and the film material of the protective layer is one of or a mixture of more of TiN, ZrO2, ZrN, SiZrOx, SiZrN and SiZrON, and the thickness of the protective layer is 3-15nm. According to the blue cover plate glass for photovoltaic building integration, the reflection color value is sapphire blue, the blue cover plate glass is used for a photovoltaic solar cell, the solar light transmittance (380 nm-1100 nm) is larger than 85%, and the efficiency of the solar cell is basically unchanged; and the invention also provides a preparation method of the blue cover plate glass.

Blue cover plate glass for photovoltaic building integration and preparation method of blue cover plate glass

View all

Owner:SHANDONG JINJING SCIENCE & TECHNOLOGY STOCK CO LTD

Optimization method for low-pressure axial fan impeller blade

ActiveCN106949095AImprove performanceShorten design timePump componentsPumpsImpellerAir volume

The invention discloses an optimization method for a low-pressure axial fan impeller blade. A low-pressure axial fan is widely applied, but the problems of low total pressure, large air volume and low impeller efficiency exist. According to the optimization method, the blade of a to-be-optimized impeller model is divided into n sections in the radial direction of the impeller, and the chord length bi, the outlet geometric angle beta 2A (i) and an inlet airflow angle beta1 (i) of the n sections are obtained. A sketch is drawn and comprises a first line segment, a second line segment, a third line segment, a fourth line segment, a fifth line segment, a sixth line segment, a first circular arc, a second circular arc, a seventh line segment and an eighth line segment. The first circular arc and the second circular arc form a novel line. According to the novel line, n new sections are obtained, and the optimized impeller model is obtained according to the n new sections. According to the optimization method, the performance of the low-pressure axial fan can be optimized only by knowing the chord length, the inlet airflow angle and the outlet geometric angle of the sections of the to-be-optimized blade, design time is shortened greatly, and cost is reduced greatly.

Optimization method for low-pressure axial fan impeller blade

View all

Owner:嘉兴笼列电子商务有限公司

Circuit and method for synchronous rectification of Jensen circuit

ActiveCN104393768AImprove efficiencyEfficiency unchangedEfficient power electronics conversionDc-dc conversionSoft switchingTransformer

The invention provides a circuit and a method for synchronous rectification of a Jensen circuit. A secondary winding with a central tab is added to a driver transformer B1 to drive synchronous rectification MOS tubes Q1 and Q2 arranged in a secondary rectifier circuit; the magnet and the number of primary turns of the driver transformer B1 are optimized, the impedance of a feedback resistor is optimized, and the working voltage at the two ends of the primary side of the driver transformer B1 is changed into sine wave or approximate sine wave from the existing square wave; the turn ratio of the first and second secondary windings of the driver transformer B1 is adjusted according to the on voltages of the synchronous rectification MOS tubes so that the on time of the MOS tubes Q1 and Q2 is always smaller than the saturated on time of main power switch tubes TR1 and TR2, and therefore, the reverse current is eliminated; meanwhile, a main transformer B2 is excited during the period of both main power switch tubes TR1 and TR2 off by use of the sine wave in the driver transformer B1, and therefore, the main power switch tubes TR1 and TR2 are switched on under zero voltage and soft switching working is realized; as the synchronous MOS tubes are switched off firstly, the main power switch tubes are also switched off under zero current; the conversion efficiency is improved and the high reliability of the simple Jensen circuit is also maintained.

Circuit and method for synchronous rectification of Jensen circuit

View all

Owner:MORNSUN GUANGZHOU SCI & TECH

Boron-nitrogen co-doped porous graphene as well as preparation method and application thereof

InactiveCN110540196AEfficient reduction catalysisPrecise Pore ControlPhysical/chemical process catalystsCarbon compoundsPorous grapheneWater vapor

The invention discloses boron-nitrogen co-doped porous graphene as well as a preparation method and an application thereof. The method comprises the following steps of placing graphene in a reaction container, introducing water vapor and argon, and carrying out heating to perform heating treatment to obtain porous graphene; heating the porous graphene in a mixed atmosphere of NH3 and Ar to carry out nitrogen doping treatment to obtain nitrogen-doped porous graphene; and putting the nitrogen-doped porous graphene and boric acid into the reaction container, and heating in a protective atmospherefor boron doping treatment to obtain a boron-nitrogen co-doped porous graphene catalyst. According to the method, water vapor is used as a weak oxidizing agent, so that pore size regulation and large-scale preparation of the porous graphene are realized. The boron-nitrogen co-doped porous graphene catalyst provided by the invention shows excellent catalytic efficiency and catalytic stability, andhas a wide application prospect in the field of nitrogen catalytic reduction.

Boron-nitrogen co-doped porous graphene as well as preparation method and application thereof

View all

Owner:SOUTH CHINA UNIV OF TECH

Upper bearing of rotary compressor

InactiveCN1978903AEfficiency unchangedReduce fluid noiseRotary piston pumpsRotary piston liquid enginesEngineeringMechanical engineering

The invention relates to rotating compressor upper bearing. It includes bearing seat, axle sleeve, air outlet valve plate, and position limiting machine. The air outlet valve plate forms truncated cone which can ensure compressor efficiency, use diminishing aperture to reduce fluid noise while discharging secondary refrigerant, thereby increase product performance and quality.

View all

Owner:LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD

Yellow cover plate glass for photovoltaic building integration and preparation method thereof

InactiveCN112047642AEfficiency unchangedCoatingsBuilding integrationInterference color

The invention relates to the technical field of photovoltaic modules, in particular to yellow cover plate glass for photovoltaic building integration and a preparation method of the yellow cover plateglass. The yellow cover plate glass for photovoltaic building integration is composed of a glass substrate and a plurality of film interference color layers which are arranged from bottom to top. Thefilm material of the multi-layer film interference color layer is a plurality of materials selected from SiO2, TiO2, ZnO, Si3N4, ZrO2, MgF2, SnO2, Nb2O5, Al2O3, ZrN and AlN, and the total thickness of the multi-layer film interference color layer is 140 to 500 nm. According to the yellow cover plate glass for building integrated photovoltaics, by using the glass, a solar cell module can present ayellow appearance, and the efficiency of a solar cell is not obviously attenuated. The invention also provides a preparation method thereof.

Yellow cover plate glass for photovoltaic building integration and preparation method thereof

View all

Owner:SHANDONG JINJING SCIENCE & TECHNOLOGY STOCK CO LTD

A data processing method and a data processing device

ActiveCN109165097APrevent crashReduce data volumeResource allocationData setOut of memory

The invention provides a data processing method and a data processing device, the method comprising: grouping data to be processed to generate a plurality of data sets; for each data group, reading all the data to be processed in the data group into the memory, and executing the dual data tasks in the data group based on all the data in the data group, and releasing the memory occupied by the datagroup after the dual data tasks in the data group are completed; and reading data of the two data groups into memory for each two data groups, executing dual data tasks between the two data groups based on the data in the two data groups, and releasing the memory occupied by the data after all the dual data tasks between the two data groups are completed. By increasing the I / O times and reducingthe amount of data read into the memory at one time, the application algorithm avoids the system or software crash caused by insufficient memory or too much task, and ensures the completeness of the task under the premise that the efficiency is basically unchanged.

View all

Owner:北京九狐时代智能科技有限公司

A Method for Evaluating the Efficiency of Oil-immersed Power Transformer Cooler

ActiveCN104361241BEfficiency unchangedEasy to grasp the load capacityTransformers/inductances coolingSpecial data processing applicationsEnergy balancingFill power

The invention discloses a method for evaluating the efficiency of an oil-immersed power transformer cooler. The steps include: calculating the average load loss of the transformer to be evaluated in a specified time period, and adding the average load loss to the nameplate no-load loss to obtain the average total power loss; Calculate the average residual power of the transformer to be evaluated in the specified time period; assuming the efficiency of the cooler of the transformer to be evaluated, calculate the average cooling power of the cooler of the transformer to be evaluated in the specified time period, and subtract the average cooling power from the average total loss power Equal to the energy balance relationship of the average residual power, subtract the average residual power from the average total power loss and divide it by the average cooling power to calculate and reverse the cooler efficiency of the transformer to be evaluated. The invention can realize the calculation of the efficiency of the cooler to grasp the load capacity of the transformer to solve the problem of insufficient efficiency of the transformer cooler, is suitable for the transformer installed with the cooler, and can also provide a basis for estimating the temperature rise of the transformer top layer oil.

A Method for Evaluating the Efficiency of Oil-immersed Power Transformer Cooler

View all

Owner:STATE GRID CORP OF CHINA +2

Higher efficiency extraction and cooling system for heavy ash flows

InactiveCN102272525AEffective preheatingDoes not reduce separation efficiencyLighting and heating apparatusFlue gasSolid fuel

The present invention relates to a method for the extraction and energy recovery of high flow heavy ash produced by solid fuel boilers, capable of lowering the final temperature of the extracted ash without increasing the air flow into the boiler flue tube, which is usually determined by the boiler designer Set at a value of about 1.5% of the total combustion air. When the air flow required for cooling exceeds the maximum value allowed to enter the boiler, the system is able to send excess air and possibly steam to the air intake duct, thus entering the air / Flue gas exchanger. The environmental separation of the cooling system is automatically handled according to the temperature signal in the ash for discharge from the system. If the cooling air is not enough to cool the ash, the cooling efficiency can be improved by adding atomized water.

Higher efficiency extraction and cooling system for heavy ash flows

View all

Owner:MAGALDI IND SRL

Gas power device and method

PendingCN108167079AReduce heat resistance requirementsLower calorific value requirementTurbine/propulsion fuel flow conduitsGas turbine plantsSystem structureImpeller

The invention provides a gas power device. The gas power device comprises an air supply machine, rotating joints, a turbine, a gas pipe, an oil pipe and a rotating shaft; an air outlet of the air supply machine communicates with a gas inlet of the gas pipe after penetrating through the first rotating joint through a pipe; an external oil supply pipeline communicates with an oil inlet of the oil pipe after passing through the first rotating joint; an oil outlet of the oil pipe communicates with a pipeline of the gas pipe; and a gas outlet of the gas pipe communicates with an intake port of theturbine through a pipe after passing through the second rotating joint. The invention further provides a gas power method; oil enters the oil pipe; air enters the air pipe through the air supply machine; and after the oil and the air are mixed for combustion, power is outwards output after pressure energy is released from the turbine. The system structure is simple; and a simple pipeline is used for replacing a complicated impeller runner, so that higher efficiency is achieved under the condition of high pressure ratio, and the higher pressure ratio can be adopted.

View all

Owner:ZHEJIANG SCI-TECH UNIV

Low-pressure gear pump and underwater vehicle power propelling device

ActiveCN107284637ASimple structureEasy to implementRotary piston pumpsRotary/oscillating piston combinationsGear pumpMarine engineering

The invention discloses a low-pressure gear pump and underwater vehicle power propelling device, and relates to the field of design of a novel marine vehicle power propulsion system. The device comprises a power component, a transmission component, a low-pressure gear pump component, a baffle and stopping block component and a connecting component. Two power propelling devices are arranged in an underwater vehicle in a crossed mode, and vector propulsion of a horizontal plane is achieved through forward and reverse rotation of a gear pump and the baffle and stopping block structure. The device has the advantages that the structure is simple, the manufacturing cost is low, the noise is small, the efficiency is not changed during vector forward and reverse propulsion, and the device is suitable for low-speed and small underwater vehicles.

View all

Owner:NORTHWESTERN POLYTECHNICAL UNIV

Parallel-PSO-based maximum fault-tolerant frequent item set mining method

ActiveCN110309179AImprove operational efficiencyEfficiency unchangedDigital data information retrievalArtificial lifePopulationFitness function

The invention discloses a parallel-PSO-based maximum fault-tolerant frequent item set mining method. The parallel-PSO-based maximum fault-tolerant frequent item set mining method includes the steps: converting the target transaction database into a corresponding binary matrix; if the converted binary matrix is a sparse matrix, setting a minimum item support degree to delete the item which does notmeet the threshold value; initializing a particle swarm according to the matrix dimension; adding a Gaussian disturbance item into a speed updating formula of the particle swarm algorithm to preventthe population from falling into local optimum; according to the concept of the fault-tolerant block, designing a fitness function of a particle swarm algorithm, converting particles in a population into an RDD data set in a Spark platform, achieving a termination condition after iteration, and obtaining a maximum fault-tolerant block, wherein when the support degree of the fault-tolerant block islarger than a minimum support degree threshold value, an item set corresponding to the fault-tolerant block is a maximum fault-tolerant item set. The parallel-PSO-based maximum fault-tolerant frequent item set mining method improves the operation efficiency of the algorithm, guarantees that the efficiency of the conditional algorithm with different fault tolerance degrees in the same target transaction database is unchanged, and meanwhile has high performance for the sparse target transaction database.

View all

Owner:GUILIN UNIV OF ELECTRONIC TECH

Ultrasonic system

ActiveCN112236240AAchieve high vibrationSmall sizeDental implantsSurgeryWaveguideMechanical engineering

Ultrasonic system (1) comprising: generator means (2) for ultrasonic microvibrations; waveguide means (4) connected to and extending away from the generator means (2) so as to bend at least in part; an operating element (6) joined to a stationary bending node (8), so that the flexural microvibrations are transmitted by the waveguide means (4) to the operating element (6) as alternating torsional or flexural microvibrations.

View all

Owner:迈克特龙股份公司

A light curing filter element and preparation method thereof

ActiveCN113041717BProportionally largeReduce usageDispersed particle filtrationFiltration separationPolymer scienceFilter material

The invention discloses a light-curing filter element, which comprises an adsorption material, a coating material, a light-curing glue and an auxiliary agent. The inside of the coating material is embedded with the adsorption material, and the outside or inside of the coating material is separated by a set interval. Putting into the light-curing glue; the auxiliary agent is added to the adsorption material or coated on the outside of the light-curing glue. The invention also discloses a method for manufacturing a light-cured filter element, which includes: putting light-cured glue into the adsorption material, coating material, and auxiliary agent; soft forming; light-curing and hard forming while being fixed by tooling; demoulding to obtain Required photocurable filter elements. On the basis of using fine filter material, the present invention introduces photocurable material, arranges them in sequence in the basic filter material, and undergoes two steps of soft forming and hard forming, which can realize high precision, high strength, simple forming, low pressure loss, and low scrap The preparation of a filter unit with high efficiency, strong universality, reduced labor time and reduced solid waste.

A light curing filter element and preparation method thereof

View all

Owner:MAYAIR TECH (CHINA) CO LTD

Lyotropic liquid crystal polarizing film and preparation method thereof

InactiveCN1837918ASimple structureHigh heat resistanceNon-linear opticsChemistryLyotropic liquid crystal

This invention relates to a lyotropic liquid crystal solid-state polarizing film and preparation method thereof. Wherein, the preparation process comprises: modified processing, preparing the solution, coating film and orientating, and stabilizing to obtain the target. This invention has polarization efficiency more than 95% with thickness only in 0.5-1,2 mum.

Lyotropic liquid crystal polarizing film and preparation method thereof

View all

Owner:SOUTH CHINA UNIV OF TECH

Dual-output magnetic disk structure of permanent-magnet torque converter

PendingCN106849610AExtended service lifeUninterrupted powerPermanent-magnet clutches/brakesMagnetic disksEngineering

The invention discloses a dual-output magnetic disk structure of a permanent-magnet torque converter. According to the dual-output magnetic disk structure, an input shaft penetrates through a magnetic disk frame first disk, the magnetic disk frame first disk is arranged on one side of a magnetic disk frame outer barrel, a magnetic disk frame second disk is arranged on the other side of the magnetic disk frame outer barrel, the magnetic disk frame first disk is connected with a first movable magnetic disk, a first output magnetic disk is connected with a first output magnetic disk output shaft, the outer side of the front end of the first output magnetic disk output shaft is sleeved by a second movable magnetic disk, the second movable magnetic disk is connected with an inner wall of the magnetic disk frame outer barrel, the outer side of the rear end of the first output magnetic disk output shaft is sleeved by a second output magnetic disk output hollow shaft, the outer side of the front end of the second output magnetic disk output hollow shaft is sleeved by a second output magnetic disk, a third movable magnetic disk is arranged on the front side of the second output magnetic disk, a fourth movable magnetic disk is arranged on the rear side of the second output magnetic disk, the third movable magnetic disk is connected with the inner wall of the magnetic disk frame outer barrel, and the fourth movable magnetic disk is connected with the magnetic disk frame second disk. The dual-output magnetic disk structure disclosed by the invention enables gear shifting action to be easy to achieve, improves work efficiency of a gear shifting transition work condition of the permanent-magnet torque converter and prolongs equipment service life.