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39results about How to "With rectification" patented technology
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Single-phase two-tube five-level rectifier based on hybrid H bridge
ActiveCN111030440ACascading convenienceAchieve power outputAc-dc conversion without reversalEfficient power electronics conversionCapacitanceEngineering
The invention provides a single-phase two-tube five-level rectifier based on a hybrid H bridge. The rectifier comprises a switching tube Q1 and a switching tube Q2, one side of an alternating currentpower supply Vs is connected with the anode of a diode D1 and the cathode of a diode D2, and the connection node forms an end point b; the connection nodes of the other end of an inductor L and diodesD3, D4, D5 and D6 form end points a; the connection nodes of the drain electrode of the switching tube Q1 and the diodes D1, D3 and D7 form end points c; the connection nodes of the source electrodeof the switching tube Q1 and the diodes D2, D4 and D8 form end points d; the anode of the diode D8 is connected with the negative electrode of a capacitor C2 to form an end point m; the anode of the diode D11, the cathode of the diode D12 and the positive electrode of the capacitor C2 are connected with the negative electrode of a capacitor C1 to form an end point n; the cathode of the diode D7 isconnected with the positive electrode of the capacitor C1 to form an end point p. The end point a, the end point c, the end point d and the end point n form four ports of the hybrid H bridge. The rectifier has the advantages of being high in output direct-current voltage, small in harmonic content, low in switching tube stress, easy to control and the like.
Owner:CHINA THREE GORGES UNIV
Inverted umbrella-shaped aeration machine
InactiveCN101624232ALow powerHigh oxygenationSustainable biological treatmentBiological water/sewage treatmentImpellerMicro bubble
The invention relates to improvement on an inverted umbrella-shaped aeration machine of a surface aeration apparatus for sewage treatment. The inverted umbrella-shaped aeration machine is characterized in that a rotary shaft is in a hollow structure, and at least the aeration is carried out in the water through an air distributing tube or a micropore aeration device in a terminal area, so that the inverted umbrella-shaped aeration machine is oxygenated by the swathed air generating whirl through rotation and oxygenates water by more air forcibly injected air, and the injected air is rotated through an impeller to stir and cut bubbles aerated into the water, particularly, the bubbles are cut through a sawtooth to ensure that the bubbles are finer to form micro-bubbles, thereby greatly improving the oxygenate capacity and the dissolved oxygen concentration of the inverted umbrella-shaped aeration machine and the deep oxygenation of the water body.
Owner:LINGZHI ENVIRONMENTAL PROTECTION CO LTD +2
One-time programmable memory based on variable-resistance memory and preparation method thereof
InactiveCN101667460AWith rectificationReduce the occupied areaSolid-state devicesRead-only memoriesHigh densityParallel computing
The invention relates to a one-time programmable memory based on a variable-resistance memory and a preparation method thereof, belonging to the technical field of microelectronic manufacture and thememory. The one-time programmable memory comprises the variable-resistance memory with the characteristic of bipolar conversion and a diode with the rectification characteristic which are connected inseries. The one-time programmable memory based on the variable-resistance memory adopts the diode with the rectification characteristic as a gating unit, adopts the variable-resistance memory with the characteristic of bipolar conversion as a memory unit, connects the diode and the variable-resistance memory in series, not only has simple structure, easy integration, high density and low cost, but also has rectification function when in low impedance state, can restrict read crosstalk in a crossed array structure, avoid misreading, can adopt integration of the crossed array structure and canrealize higher memory density.
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI
Single-phase five-level power factor correction circuit based on hybrid H bridge
ActiveCN110880864AHigh working reliabilityImprove practicalityEfficient power electronics conversionAc-dc conversionCapacitanceHemt circuits
A single-phase five-level power factor correction circuit based on a hybrid H bridge comprises switching tubes Q1, Q2 and Q3. One side of an alternating-current power supply Vs is connected with an anode of a diode D1 and a cathode of a diode D2, and a connection node forms an end point b. The other side of the alternating-current power supply Vs is connected with one end of an inductor L, the other end of the inductor L is connected with the anode of a diode D3 and the cathode of a diode D4, and connection nodes form an end point a. The drain electrode of the switching tube Q3 is connected with the cathode of the diode D1, the cathode of the diode D3, the anode of the diode D7, the drain electrode of the switching tube Q1 and a connection node to form an end point c. The source electrodeof the switching tube Q3 is connected with the anode of a diode D2, the anode of a diode D4, the cathode of a diode D8 and the source electrode of a switching tube Q2, and the connection node forms anend point d. The source of the switching tube Q2 is connected with the drain of the switching tube Q1, and the connection node forms an end point n. The cathode of the diode D7 is connected with oneend of the capacitor C1, and a connection node forms an end point p. The negative electrode of the capacitor C2 is connected with the anode of the diode D8 and the connection node forms an end point m. And the endpoint a, the endpoint c, the endpoint d and the endpoint n form four ports of the hybrid H-bridge network structure. The circuit structure has the advantages of low cost, high reliability, simple control system design and the like.
Owner:CHINA THREE GORGES UNIV
Single-phase three-level power factor correction rectifier based on symmetrical four ports
ActiveCN110661413AProtectRealize rectification functionEfficient power electronics conversionAc-dc conversionCapacitanceHemt circuits
The invention relates to a single-phase three-level power factor correction rectifier based on asymmetric four ports. The rectifier comprises an alternating-current power source AC, an inductor L, switching tubes (Q1, Q2, Q3 and Q4), diodes (D1, D2, D7, D8, D9 and D10), and capacitors (Cdc1 and Cdc2); one side of the alternating-current power source AC is connected with the anode of the diode D1 and the cathode of the diode D2, and the connection node of the alternating-current power source AC, the diode D1 and the diode D2 form an end point b; the other side of the alternating-current power source AC is connected with one end of the inductor L; the other end of the inductor L is connected with the source electrode of the switching tube Q3 and the drain electrode of the switching tube Q4,and the connection node of the inductor L, the switching tube Q3 and the switching tube Q4 form an end point a; the drain electrode of the switching tube Q3 is connected with the cathode of the diodeD1 and the anode of the diode D8, and the connection node of the switching tube Q3 and the diode D8 forms an end point c; the source electrode of the switching tube Q4 is connected with the anode of the diode D2 and the cathode of the diode D7, and the connection node of the switching tube Q4, the diode D2 and the diode D7 forms an end point d; the cathode of the diode D8 is connected with one endof the capacitor Cdc1, and the connection node of the diode D8 and the capacitor Cdc1 forms an end point p; the other end of the capacitor Cdc1 is connected with one end of the capacitor Cdc2, and the connection node of the capacitor Cdc1 and the capacitor Cdc2 forms an end point n; and the other end of the capacitor Cdc2 is connected with the anode of the diode D7, and the connection node of thecapacitor Cdc2 and the diode D7 forms an end point m. The topological structure of the rectifier can adopt a multi-carrier modulation mode to control different circuit modes.
Owner:CHINA THREE GORGES UNIV
One-time programming memory and manufacturing method thereof
InactiveCN101577311AEasy to prepareReduce manufacturing costSolid-state devicesSemiconductor devicesEngineeringConductive materials
The invention relates to a one-time programming memory and a manufacturing method thereof, belonging to the technical field of microelectronics. The one-time programming memory comprises a lower electrode, an upper electrode and a functional layer film positioned between the upper electrode and the lower electrode; the contact between the upper electrode and the functional layer film or between the lower electrode and the functional layer film forms rectification characteristics. The manufacturing method of the one-time programming memory comprises the steps: forming a substrate as the lower electrode; forming the functional layer film on the substrate; photoetching on the functional layer film and depositing conducting material to form the upper electrode after peeling-off; forming rectification characteristics in virtue of the contact between the upper electrode and the functional layer film or between the lower electrode and the functional layer film. The invention lowers manufacturing cost of the memory and is advantageous for integration and usage of the memory; memory devices can be integrated in a structure of cross array, thus enhancing density of the memory; the memory itself has the effect of rectification and no need of additional rectifying devices, thereby eliminating influence on the memory by the additional rectifying devices and prohibiting read crosstalk.
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI
Combustor and application thereof
PendingCN112212328AHigh densityAperture limitFluid heatersDomestic stoves or rangesThermodynamicsMechanical engineering
The invention provides a combustor. The combustor comprises a shell, a draught fan, a burner head and an ignition mechanism, and an air inlet of the shell and the input end of the burner head form a pressure equalizing cavity; the ignition mechanism is arranged at the output end of the burner head, and the burner head comprises a main frame body and at least one stable combustion isolation belt; the interior of the main frame body is divided into at least two ventilation areas in the direction of a gas channel through the stable combustion isolation belt; a plurality of separation mechanisms are arranged in each ventilation area, and the ventilation areas are divided into a plurality of through holes distributed in the direction of the gas channel through the separation mechanisms; and thethrough holes are used for allowing mixed gas to pass through and strengthening the mixing effect of the gas and air, and combustion flame of the combustion face of the main frame body can be dividedinto independent flames through the stable combustion isolation belt. According to the combustor, the power of a combustion component can be changed with the area of the combustor, and fuel gas and air are highly and evenly mixed after entering micropore channels, and ignited to form even premixed flame after being sprayed out from the micropore channels; and the flames are independent through arrangement of the isolation belt, and the flames are stable, clean and efficient.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Combustion component and combustor
The invention provides a combustion component and a combustor. The combustion component comprises a main frame body and at least one stable combustion isolation belt; the stable combustion isolation belt divides the interior of the main frame body into at least two ventilation areas along the direction of a gas channel; each ventilation area is internally provided with a separation mechanism, andthe separation mechanism divides the ventilation area into a plurality of through holes arranged along the direction of the gas channel; and long through holes are used for allowing mixed gas of fuelgas and air to pass through and strengthening the mixing effect of the fuel gas and the air, and the stable combustion isolation belt can divide combustion flames on a combustion face of the main frame body into independent flames. Through a micropore structure, the mixing degree of the fuel gas and air is enhanced, combustion is more sufficient, one-way transmission of the flames can be kept, theflame-retardant and anti-backfire effects are achieved, meanwhile, the stable combustion isolation belt plays a role in stabilizing the combustion flames, and after the ventilation area is divided, the combustion flames between adjacent holes forms a pyramid shape or a conical shape and the like, and the separated ventilation areas are combusted independently, so that combustion is more stable, and less pollutants are discharged.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Single-phase power factor correction circuit based on three-tube five-level topology
ActiveCN111030441AReduce voltage stressWith boostEfficient power electronics conversionAc-dc conversionCapacitanceHemt circuits
The invention provides a single-phase power factor correction circuit based on three-tube five-level topology. The circuit comprises switching tubes Q1, Q2 and Q3, one side of an AC power supply is connected with the anode of a diode D1 and the cathode of a diode D2, and the connection nodes form an end point b; the other side of the AC power supply AC is connected with one end of an inductor L, and the other end of the inductor L is connected with the anode of a diode D3 and the cathode of a diode D4 and the connection nodes form an end point a; the cathode of the diode D7 is connected with one end of a capacitor C1, and the connection node forms an end point p; the other end of the capacitor C1 is connected with one end of a capacitor C2, and the connection node forms an end point n; theother end of the capacitor C2 is connected with the anode of the diode D8, and the connection node forms an end point m; the drain electrode of the switching tube Q1 is connected with the cathode ofthe diode D1 and the anode of the diode D7 respectively, and the connection node forms an end point c; the source electrode of the switching tube Q3 is connected with the anode of the diode D2 and thecathode of the diode D8, and the connection node forms an end point d. The end point a, the end point c, the end point d and the end point n form four symmetrical ports. The correction circuit adoptsmultiple levels so as to have the advantage that the voltage stress of the switching tube is low.
Owner:CHINA THREE GORGES UNIV
Auxiliary device capable of improving surveying and mapping precision of remote sensing image
ActiveCN112762900AEasy to shoot down verticallyAvoid blowingPicture taking arrangementsCamera lensUncrewed vehicle
The invention relates to the technical field of remote sensing surveying and mapping auxiliary devices, in particular to an auxiliary device capable of improving remote sensing image surveying and mapping precision, which comprises an unmanned aerial vehicle, the bottom end of the unmanned aerial vehicle is fixedly connected with a fixed shell, the bottom end of the fixed shell is fixedly connected with a bottom plate, and a surveying and mapping camera is mounted at the center of the bottom surface of the bottom plate. According to the unmanned aerial vehicle, through the arrangement of the bottom plate and the spherical shell, the spherical shell protects the surveying and mapping camera, the surveying and mapping camera is prevented from being blown by transverse airflow, dust is effectively prevented from entering the surveying and mapping camera, meanwhile, wind resistance is reduced, and the unmanned aerial vehicle can be conveniently kept stable in the air; and through arrangement of the two protective plates, an annular plate and a driving rod, when the unmanned aerial vehicle drives the surveying and mapping camera to descend, the two protection plates are automatically closed under wind pressure to shield the surveying and mapping camera and prevent dust from entering a lens of the surveying and mapping camera, and when the unmanned aerial vehicle hovers in the air to prepare for shooting, the two protection plates are automatically opened towards the two sides to expose the lens of the surveying and mapping camera, and shooting is convenient.
Owner:WEIFANG ENG VOCATIONAL COLLEGE
Gas stove
PendingCN112128805AEmission reductionEasy dischargeDomestic stoves or rangesGaseous fuel burnerThermodynamicsMechanical engineering
The invention provides a gas stove. The gas stove comprises a draught fan, an inner ring burner housing, an outer ring burner housing, a gas distribution mechanism, an adjusting valve, burner heads and an igniter, wherein the gas distribution mechanism is used for distributing gas in the inner ring burner housing and the outer ring burner housing; an inner ring burner adopts gas injection type diffusion combustion; an outer ring burner adopts active air supply premixed combustion; the burner head of the outer ring burner comprises a main frame body and at least one stable burning isolation belt; the stable burning isolation belt divides the interior of the main frame body into at least two ventilation areas in the direction of a gas channel; a separation mechanism is arranged in each ventilation area and divides the ventilation area into a plurality of through holes distributed in the direction of the gas channel; the through holes are used for allowing premixed gas to pass through andstrengthening the mixing effect of the premixed gas and the through holes; and the stable burning isolation belt can divide burning flames on the burning face of the main frame body into mutually independent flames. According to the gas stove, the mixing degree of gas and air can be enhanced by the micropore structure, so that the burning is more sufficient, and the pollutants are few.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Filtering module of electronic signal connector
InactiveCN102447201AKeep the existing patternHold typeCoupling for high frequencyElectrical conductorButt joint
The invention provides a filtering module of an electronic signal connector. An insulation seat body of the electronic signal connector is provided with a plurality of terminals in a penetrating manner, and the butt joint sides of the terminals are extended in a butt joint space of the insulation seat body; various welding sides are connected with the filtering module in an accumulating space in an electrical manner; the filtering module is provided with a plurality of transmission terminals in an electrical connection manner which are respectively extended out of the insulation seat body; the filtering module is provided with a metal inner core in the base material; the two lateral surfaces are formed into copper coil layers of a sensing area with preset circuit layout, and the external surfaces of the two copper coil layers are formed into a preset circuit layout of radial shaped multiple metal wires; and a magnetic induction effect of continuously coiled metal magnetic induction loop is formed by mutually connecting and conducting internal metal conductors of various vents and through holes and the radial shaped multiple metal wires, so that the electronic signal connector can perform signal filtering and rectifying. The filtering module provided by the invention can be used for reaching the purpose that the existing volume of the electronic signal connector is not enlarged through the small-volume and low-cost plate-shaped filtering module.
Owner:AJOHO ENTERPRISE
High-temperature, high-pressure and high-flow-rate moisture environment corrosion simulation loop system
PendingCN110954470AMock securityIncrease flow rateWeather/light/corrosion resistanceThermodynamicsElectrochemistry
The invention discloses a high-temperature, high-pressure and high-flow-velocity H2S / CO2 moisture environment corrosion simulation loop system. The loop system comprises a high-temperature and high-pressure kettle and a loop pipeline; an inlet and an outlet of the loop pipeline are communicated with the high-temperature and high-pressure kettle to form a loop system; the loop pipeline comprises ahigh-flow-velocity test section and a low-flow-velocity test section, and the high-flow-velocity test section is close to the gas phase outlet end of the high-pressure and high-temperature kettle; andaxial flow fans, Laval tubes with heating coils, gas flowmeters, corrosion probes, thermocouples, thermoelectric refrigeration devices, corrosion monitoring sections and sample mounting sections arearranged in the high-flow-rate test section and the low-flow-rate test section. The simulation loop system can accurately simulate the real corrosion environment in the submarine natural gas pipeline,such as temperature, pressure, flow velocity, pipeline top condensation and the like, and has the functions of corrosion electrochemical monitoring and physical coupon mounting; and the method has important significance for researching the corrosion law and mechanism of the submarine pipeline material and evaluating the applicability of the anti-corrosion agent.
Owner:CHINA NAT OFFSHORE OIL CORP +1
Deceleration separation device
The invention discloses a deceleration separation device which comprises a deceleration parachute cabin, a combination actuator, a deceleration parachute pack, a battery box and a sub-machine controlpanel. The deceleration parachute bay comprises a parachute bay body and a parachute bay cover; a first port of the parachute bay body is clamped with the parachute bay cover; a second port of the parachute bay body is connected with a sub-aircraft protection cylinder of the unmanned aerial vehicle through a first connecting part; the assembling actuator is fixedly arranged in the parachute bay body; one end of the combined actuator is a parachute throwing device and is connected with the parachute cabin cover; the other end of the combined actuator is an explosive bolt and is connected with atransition joint of the unmanned aerial vehicle; the deceleration parachute pack is arranged in the deceleration parachute cabin and connected with the parachute cabin cover and the assembling actuator through second connecting parts. The battery box is arranged in the parachute bay body and is respectively connected with the parachute throwing device and the explosive bolt; and the sub-machine control panel is arranged in the parachute bay body and is in communication connection with the parachute throwing device and the explosive bolt respectively. The device can be separated from the aircraft, the weight during free flight is reduced, and the cruising ability of the aircraft is improved.
Owner:BEIJING ZHZ TECH
Direct-current droplet generator and preparation method thereof
ActiveCN113489122APlay a connecting roleEasy to use outputBatteries circuit arrangementsElectric powerHemt circuitsMechanical engineering
The invention discloses a direct-current droplet generator and a preparation method thereof. The generator is characterized in that the generator has a structure in which all electrodes are placed above a solid surface and do not need to be grounded, so that the direct-current liquid drop generator can be constructed on any surface including a block body, a thin film and a coating; the droplet generator structure comprises a solid hydrophobic surface, an upper electrode, a collector pin, a lower electrode, an upper electrode lead and a lower electrode lead. The solid surface is a hydrophobic surface made of any artificial or natural materials, the upper electrode and the lower electrode are placed on the solid surface at a certain interval, the current collecting needle can be of an independent conductive tip structure and can also be directly machined on the electrode, and the generator can collect electric energy by impacting the surface through liquid drops. Compared with the prior art, the direct-current droplet generator can be constructed on any solid surface, the collected liquid mechanical energy is converted into the electric energy with the direct-current characteristic, and the direct-current droplet generator has the advantages of being simple in preparation process and low in cost. The open-circuit voltage of the direct-current liquid drop generator is up to kilovolt, a power management circuit is not needed, and the direct-current liquid drop generator can directly drive micro electronic devices to work or charge an energy storage unit. The structure of the direct-current generator has the functions of power generation, rectification and energy storage at the same time, a new technology based on solid-liquid interface water energy collection is developed, and the practical progress of water energy collection is greatly accelerated; meanwhile, the device is also a sensor or a probe. Due to the fact that the device achieves effective separation of charges, the device has extremely high application value in the aspects of droplet energy collection and self-driven sensing.
Owner:SOUTHWEST UNIVERSITY
Technical vehicle of charging system for transit trolley with super capacitance
InactiveCN1797898AWith power generationWith variable pressureBatteries circuit arrangementsElectric powerCapacitanceElectricity
The technical vehicle is composed of motorcar chassis, autobody, power set, voltage transforming and regulating system, voltage and current limiting system, DC rectification system, charging control system and rise and fall enable working platform system. If transit trolley with super capacitance takes long-distance transport, the technical vehicle can go with it and supplies electric energy to it. If transit trolley is broken down caused by shortage of electricity, the technical vehicle can charge it to resume normal operation. If charging station is in failure, the technical vehicle can be as temporary charging station. The rise and fall enable working platform system is in use for installing and maintaining charging stations.
Owner:SHANGHAI SHENZHOU VEHICLE ENERGY SAVING & ENVIRONMENTAL PROTECTION
Framework device for wind collection power generation of direct-drive accelerated type narrow tube
ActiveCN105545611ASlow release centrifugal gravityStable supportWind motor supports/mountsWind energy generationEngineeringFastener
The invention relates to a framework device for wind collection power generation of a direct-drive accelerated type narrow tube. The framework device comprises a hub type component. One end of the hub type component is fixedly connected with the inner ring of a swing bearing. The other end of the hub type component is fixedly connected with one end of a tubular support. A tubular supporting hoop is arranged on the periphery of the tubular support in a matched manner. One end of the tubular supporting hoop is fixedly connected with a reinforced composite bridge through a gasket and a fastener. One end of a double-rail structure frame is fixedly connected with the tail portion of the reinforced composite bridge, and the other end of the double-rail structure frame is connected with the hub type component in a clamping manner. The end, connected with the hub type component, of the tubular support penetrates the reinforced composite bridge. According to the framework device, damage possibly caused by turbulent flow and gust vibration in the whole machine operation process is avoided, the key function is achieved on decomposing and eliminating of gravity loads, and the framework device is as firm as a rock even in severe wind conditions; and the framework device effectively adapts to application and popularization of large-power wind generation type wind power generators in the future.
Owner:李勇强
Full-power speed increasing type impeller and framework system
ActiveCN105545610AImprove running characteristicsSolve running problemsWind motor supports/mountsMachines/enginesImpellerElectricity
The invention relates to a full-power speed increasing type impeller and framework system. The full-power speed increasing type impeller and framework system comprises an impeller speed increasing system, an electric generator and a framework system. The impeller speed increasing system converts external wind energy into rotating kinetic energy and transmits the kinetic energy to the electric generator; and the electric generator converts the kinetic energy into electric energy to be systematically output. According to the system, incompleteness of an existing narrow pipe wind gathering and electricity generating technology is improved, a direct drive speed increasing type impeller mechanical structure is improved in a conquered manner, and compatibility, safety reliability, stability and service life of an enhanced type composite bridge type rigid crosslinking installation platform structure system are further included, the size, weight and cost of the electric generator are reduced, and the full-power speed increasing type impeller and framework system can be suitable for the industrial requirements of development of the wind power course in the future.
Owner:李勇强
Single-phase power factor correction circuit based on three-transistor five-level topology
ActiveCN111030441BSimple designEasy to implement control designEfficient power electronics conversionAc-dc conversionCapacitanceHemt circuits
Owner:CHINA THREE GORGES UNIV
Bipolar pre-charging device with single power supply transverse rod
InactiveCN109127142AAvoid first charging negative and then positiveImprove bipolar charging effectElectrode constructionsPre-chargeHigh-voltage direct current
The invention relates to a bipolar pre-charging device with single power supply transverse rod. According to the technical scheme, the device comprises a pre-charging electric appliance, a dust remover and an air inlet box and air outlet box which are arranged at the two ends of the device. A plurality of cathode rod frames and anode rod frames are vertically, uniformly and alternately arranged inthe pre-charging electric appliance along an air flow direction; a plurality of cathode corona wires and cathode tube groups are alternately and uniformly arranged on the cathode rod frames, and a plurality of anode corona wires and anode tube groups are alternately and uniformly arranged on the anode rod frames; the cathode corona wires and the adjacent anode tube groups form a negative electricfield, and the anode corona wires and the adjacent cathode tube groups form a positive electric field; the cathode rod frames are connected with the high-voltage output end of a high-voltage direct current power supply through a high-voltage cable, and the anode rod frames are connected with a grounding electrode of the high-voltage direct current power supply through a grounding cable. The device aims at providing a single power supply bipolar pre-charging device which can simultaneously achieve dust pre-charging and electrostatic coagulation, is easy in removing ash and has high purification efficiency on fine matters.
Owner:WUHAN UNIV OF SCI & TECH
A structure device for direct-drive speed-up narrow-tube wind-gathering power generation
ActiveCN105545611BSlow release centrifugal gravityStable supportWind motor supports/mountsWind energy generationEngineeringWind power generation
Owner:李勇强
Bypass coal gas temperature decreasing, pressure reducing and afterheat recovering equipment for CCPP (Combined Cycle Power Plant) system
ActiveCN107739765AWith rectificationSave materialBlast furnace detailsIncreasing energy efficiencySpray nozzleProcess engineering
The invention discloses bypass coal gas temperature decreasing, pressure reducing and afterheat recovering equipment for a CCPP (Combined Cycle Power Plant) system. The bypass coal gas temperature decreasing, pressure reducing and afterheat recovering equipment for the CCPP system comprises a base, an equipment shell, a coal gas pipeline and a cooling water circulating pump; a coal gas outlet is formed in the top of the equipment shell; a water collecting tank is arranged at the bottom of the equipment shell; a hot water pipeline is arranged on the outer side of the equipment shell; a dispersing pipeline is arranged above the water collecting tank; the dispersing pipeline forms a coal gas channel with the equipment shell, and a demister is arranged; the bottom end of the dispersing pipeline communicates with each of the water collecting tank and the coal gas channel; the coal gas pipeline enters from the bottom end of the equipment shell and extends into the dispersing pipeline; a coalgas pipeline inlet is formed in the end, out of the equipment shell, of the coal gas pipeline; a plurality of pressure reducing porous plates are arranged in the coal gas pipeline; a flow guide stopplate is arranged above the coal gas pipeline outlet; a top water tank is arranged at the top end out of the equipment shell and is connected with a cooling water pipeline; and a plurality of coolingwater spraying nozzles which are connected with the cooling water pipeline are arranged in the dispersing pipeline. The bypass coal gas temperature decreasing, pressure reducing and afterheat recovering equipment for the CCPP system integrates temperature decreasing, pressure reducing and afterheat recovering; the equipment volume is reduced; the equipment cost is reduced; the maintenance labour intensity is reduced; the operating cost is reduced; and the practicability is high.
Owner:HUATIAN ENG & TECH CORP MCC
A ccpp system bypass gas temperature reduction and pressure reduction and waste heat recovery equipment
ActiveCN107739765BWith rectificationSave materialBlast furnace detailsIncreasing energy efficiencyWaste heat recovery unitSpray nozzle
Owner:HUATIAN ENG & TECH CORP MCC
Faucet type drying device
The invention discloses a faucet type drying device which comprises an outer tube and an air outlet nozzle, wherein the air outlet nozzle is arranged at one end of the outer tube and is mounted on thewall of the outer tube; the air outlet nozzle comprises a main body; the main body is provided with a plurality of grids which extend into the inner cavity of the outer tube; air outlets for communicating the inner cavity of the outer tube with the outside are formed between adjacent grids. By adopting the faucet type drying device disclosed by the invention, the thickness of the air outlet nozzle can be reduced, airflow guidance quality and uniformity can be improved, and a phenomenon of turbulent flows is avoided.
Owner:HANGZHOU AIKE ELECTRICAL APPLIANCE CO LTD
Burner
The invention discloses a burner. The burner comprises a fan for supplying oxidant gas, a mixer connected with the fan, a burning head connected with the mixer and a swirler arranged in the burning head, wherein oxidant gas and fuel gas are mixed in the mixer to obtain a mixed gas; the mixed gas is jetted from the burning head; the swirler comprises a plurality of blades which radially extend from the swirler center to the periphery; and the plurality of blades are inclined at a preset angle relative to the axial direction of the burning head; and a plurality of first through holes are formed in each blade. According to the burner, the fuel gas and the oxidant gas are firstly mixed in the mixer and are jet through the swirler; the plurality of first through holes are formed in the plurality of blades of the swirler, and have a rectifying effect, and the mixed gas can be further mixed while turbulence of the mixed gas is realized, so that the fuel gas and the oxidant gas can be uniformly mixed more easily, and the length of the mixing section of the burner can be shortened.
Owner:BAY ENVIRONMENTAL TECH BEIJING
1D1R memory with single stacking structure, and preparation method thereof
InactiveCN108962932AWith rectificationWith characteristicsSolid-state devicesSemiconductor devicesFermi levelWork function
The present invention provides a 1D1R memory. The 1D1R memory includes: an Si substrate layer, a metal oxide layer over the Si substrate layer, and a metal electrode layer over the metal oxide layer,wherein the Si substrate layer and the metal oxide layer constitute a pn heterostructure; the Si substrate layer has a resistivity of 0.01 to 0.05 Omega*cm; the metal oxide layer has a resistivity of10<4> to 10<5> Omega*cm; and the work function of the metal electrode layer matches the Fermi level of the metal oxide layer. The 1D1R memory has a single stacking structure, has a simple preparationprocess, and has a high longitudinal 3D integration density.
Owner:INST OF PHYSICS - CHINESE ACAD OF SCI
Single-phase two-transistor five-level rectifier based on hybrid h-bridge
ActiveCN111030440BImprove reliabilityWith boostAc-dc conversion without reversalEfficient power electronics conversionCapacitanceEngineering
Owner:CHINA THREE GORGES UNIV
Passive rectifier circuit
InactiveCN103595270BWith rectificationStrong boosting abilityAc-dc conversion without reversalHigh-voltage direct currentVoltage source
Owner:SHANGHAI JIAOTONG UNIV
Passive rectifying circuit
InactiveCN103595270AHigh DC voltage levelStrong boosting abilityAc-dc conversion without reversalHigh amplitudePower electronics
The invention discloses a passive rectifying circuit in the technical field of power electronics. The passive rectifying circuit comprises an alternating current power source and a rectifying circuit body. The alternating current power source comprises a first voltage source and a second voltage source which are based on the same benchmark. The rectifying circuit body is composed of at least one rectifying unit and a flow current unit which are cascaded in sequence, and the two-phase alternating voltage is input to produce the high-voltage direct voltage to be used by a backward stage load. The passive rectifying circuit has the function of rectifying, the high-amplitude direct voltage can be produced, the more the number of series is, the higher the class of the direct voltage becomes, and the passive rectifying circuit has the advantages of being strong in boosting capacity, simple in structure, low in cost and the like.
Owner:SHANGHAI JIAO TONG UNIV
Three-level rectifying level suitable for preceding stage of intelligent frequency drift water treatment power supply
ActiveCN113364312AWith dual boostWith rectificationAc-dc conversion without reversalEfficient power electronics conversionPower factorHemt circuits
The invention discloses a three-level rectifying level suitable for the preceding stage of an intelligent frequency drift water treatment power supply, and particularly relates to the technical field of an intelligent frequency drift water treatment control system and a power electronic multi-level converter. The technical scheme is that the three-level rectifying level comprises a rectifying circuit, a chopping pulse circuit, a magnetic field and coil loop, a pipeline and a control system, the rectifying circuit is connected with the chopping pulse circuit, and the chopping pulse circuit is connected with the magnetic field and coil loop. The beneficial effects of the present invention are that in a unity power factor correction topology, a three-level structure consisting of two series switch tube bridge arms is connected in parallel, and two booster circuit units are arranged in a rectifier topology, so that the dual-boost characteristic is realized; in addition, the two inductors in the topological structure are respectively connected with the two series switch tube bridge arms, the rectifier can still work normally under the condition that any bridge arm breaks down, the power output to a rear stage can still be achieved, and the working reliability of a circuit is improved.
Owner:华工科技(广东)有限公司
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