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96results about How to "Realize automatic balance" patented technology
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Method for determining a fluid flow rate with a fluid control valve
InactiveCN103307342ALow costRealize the adjustment functionOperating means/releasing devices for valvesVolume/mass flow by electric/magnetic effectsFluid controlValve actuator
Owner:冯经娟
Ultralow-emission MGGH energy conservation and environmental protection equipment and method for thermal power plant
InactiveCN105240825APrevent smoke condensationAvoid flue gas low temperature corrosion phenomenonCombustion technology mitigationFeed-water heatersAutomatic controlAir heater
The invention discloses ultralow-emission MGGH energy conservation and environmental protection equipment for a thermal power plant. The equipment is connected with a steam pumping and heat recycling system of a steam turbine through open circulation, automatically balances smoke residual heat recycled with heat required for heating boiler inlet air, avoids smoke dew condensation, prevents smoke low-temperature corrosion, ensues that the influence of ambient temperature variation and unit load variation on the temperature of boiler exhaust smoke can be couteracted under various work conditions, and realizes automatic control on the temperature of electrostatic precipitating inlet smoke and the temperature of the boiler inlet air. The equipment can automatically balance the smoke residual heat recycling power of a low-temperature coal economizer and the boiler inlet air heating power of an air heater, and under various work conditions, can automatically control the temperature of an electrostatic precipitating smoke inlet, automatically control the air outlet temperature of the air heater and automatically control the emission temperature of a chimney. The equipment meets environmental protection requirements for smoke emission, and meanwhile, has social benefit and economical benefit of conserving coal, conserving water and reducing smoke emissions.
Owner:上海羲蓝节能环保科技有限公司
Implementing method of intelligent flow control valve and valve
ActiveCN1862421ARealize intelligent controlIdeal equal percentage regulation characteristicsAdaptive controlFluid controlEngineering
The present invention relates to an intelligent control implement method of valve and its valve. Said invention is aimed at providing an implement method of intelligent fluid control valve based on high-level calculation and its valve. Said method includes the following steps: setting flow value in intelligent controller, data sampling external signal and comparing it with set value, utilizing APID algorithm to regulate opening of electric valve component so as to implement intelligent control. Said control valve includes valve body and electric valve component placed in said valve body interior, and said electric valve component includes flow sensor, intelligent controller and electric executor, etc.
Owner:HANGZHOU ZETA TECH
Automatic controlling device and method for bridge static load test
The invention discloses automatic controlling device and method for a bridge static load test and relates to the technical field of bridge quality inspection equipment. The automatic controlling device comprises a test main controlling device, a loading executive device, a load measuring device, a deflection measuring device and the like. The automatic controlling method comprises the following steps: calculating a calculating load value Pk of each load grade; reading a detection load value Fi and a deflection value in real time, setting a relative lower limit deviation percentage Llim and a relative upper limit deviation percentage Ulim, comparing with Fi to obtain Fmax and Fmin; and comparing Fmax and Pk (1+Ulim), and selecting to execute a dynamic automatic balancing process or a synchronous balancing loading process. By automatically controlling the whole loading process by an industrial computer, the automatic controlling device and method are capable of automatically detecting and storing synchronous loading, automatic load balancing, load data and deflection data of each point, obtaining test reports, remotely monitoring test data and field images and also saving a great deal of manpower.
Owner:WUHAN SIMUTECH CO LTD
Device and method for installing deep sea submarine storage tank
InactiveCN103241668ASolve installation problemsReduce controlWaterborne vesselsWinding mechanismsWinchSubmarine
The invention discloses a device and a method for installing a deep sea submarine storage tank and belongs to the technical field of ocean engineering. The device and the method solve the problem of deep-sea installation of large submarine structures such as submarine storage tanks beyond joint capability of conventional floating crane lifting and rope capacity. The device for installing the deep sea submarine storage tank is composed of a lifting frame, a heaving compensator, a retractable winch, an oil supply ship and a packing fluid charging and discharging pipeline, the storage tank is filled with light liquids such as oil during installation on the sea, and the heaving compensator is used for reducing the additional inertia force caused by shaking of ships. By the aid of the device and the method, the problem that large facilities with dead loads exceeding kilotons can not be installed in the deep sea in the past is solved through reasonable combination of existing devices; the automatic balance between pressures inside and outside the tank is achieved through oil filling, and the structural design is easy to implement; and the heaving compensator is connected in series to conduct hoisting operations, so that the influence of environmental factors on devices such as floating cranes during installation of large underwater facilities can be reduced.
Owner:CHINA PETROLEUM & CHEM CORP +1
Device and method for automatic balancing for unbalance faults of large rigid rotor
PendingCN108375454ARealize automatic balancePrecise position controlStatic/dynamic balance measurementAutomatic balancing valvesRigid rotor
The invention discloses a device and a method for automatic balancing for unbalance faults of a large rigid rotor, and belongs to the field of rotor balancing. The device for automatic balancing comprises a rotor and track mechanisms, wherein the rotor is arranged between two bearing brackets; the track mechanisms are respectively arranged at the vertical surfaces of both ends of the rotor; two counterweight trolleys are arranged in each track mechanism; a motor in each counterweight trolley is used for driving the corresponding counterweight trolley to rotate along the corresponding track mechanism; a vibration signal and a rotation speed signal detected by a sensor are transferred to a balance tester; the processed signals are transferred to a control system in each counterweight trolleyby a signal generator; the control system is used for sending a pulse signal to each motor, so as to control each counterweight trolley to move in the corresponding track mechanism. The device has the advantages that by arranging a vertical circular track for moving each counterweight trolley, the position of a balance block can be automatically obtained according to the fault conditions, and theautomatic balancing can be realized in the running process of the rotor; the time is shortened, and the benefit is improved.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY
Symmetric permanent-magnetic suspension system and permanent-magnetic suspension train rail system
ActiveCN106012716ARealize automatic balanceAchieving passive levitationRailway tracksElectric propulsionAutomotive engineeringMagnetic suspension system
The invention provides a symmetric permanent-magnetic suspension system and a permanent-magnetic suspension train rail system. The symmetric permanent-magnetic suspension system is characterized in that I-shaped suspension steel rails 1 made of a magnetic conductive material are arranged in the middle of the system; permanent-magnetic suspension assemblies 15 are symmetrically arranged on two sides of each I-shaped suspension steel rail 1; each permanent-magnetic suspension assembly 15 comprises an upper magnetism collection plate 12, a lower magnetism collection plate 14 and a suspension permanent magnet 13 arranged between the upper magnetism collection plate 12 and the lower magnetism collection plate 14; the magnetic gap of left and right end faces of the upper magnetism collection plates 12 and the lower magnetism collection plates 14 of left and right permanent-magnetic suspension assemblies is equal to that of left and right end faces of the upper yoke plates 2 and lower yoke plates 3 of the I-shaped steel rails 1, and upper and lower directions of the upper and lower magnetism collection plates and upper and lower yoke plates are staggered at a certain interval, so that passive suspension can be realized; left and right I-shaped suspension steel rails 1 are arranged at two ends of a sleeper 11, horizontal guide wheels (8) are arranged on left and right sides of a train; linear motor driving coils (8) are arranged on the rail, and form a two-sided permanent-magnetic linear motor high-efficiency traction train with a traction permanent-magnet on the train, and a safe, superspeed and energy-saving novel rail transition system is constructed.
Owner:DALIAN WHIM SCI & TECH LTD CO
Automatic balance-adjusting beam-pumping unit and method
ActiveCN106150441AImprove production timelinessReduce manual labor intensityFluid removalEngineeringStart up
The invention discloses an automatic balance-adjusting beam-pumping unit and an automatic balance-adjusting method. An automatic balance-adjusting device is arranged on a crank of a pumping unit; the automatic balance-adjusting device comprises a fixed balance block, a left movable balance block, a right movable balance block, a balance motor and a right-angle speed reducer, wherein the fixed balance block is connected with the crank through a bolt, and the fixed balance block can slide on the crank in the length direction of the crank; the right-angle speed reducer is connected with the balance motor, and the right-angle speed reducer is mounted on the fixed balance block; output shafts are arranged on the two side surfaces of the right-angle speed reducer, and have opposite rotating directions; the left movable balance block and the right movable balance block are mounted on the output shafts on the two side surfaces of the right-angle speed reducer respectively. The balance motor is started up, the balance motor transmits power to the right-angle speed reducer, the right-angle speed reducer drives the left movable balance block and the right movable balance block to rotate, and the balance of the beam-pumping unit is adjusted by changing the gravity center positions of the left movable balance block and the right movable balance block.
Owner:CHINA PETROLEUM & CHEM CORP +1
Load balancing method, device and equipment of distributed file system
InactiveCN107590249AImprove performanceRealize automatic balanceResource allocationTransmissionDistributed File SystemMetadata server
The embodiment of the invention discloses a load balancing method, device and equipment of a distributed file system and a computer readable storage medium. The method comprises the steps of obtainingmetadata servers MDS0 in a metadata cluster and a total load value of all metadata servers MDSn; calculating a target load value according to the total load value and the total number N of the metadata servers in the metadata cluster; judging whether the current load value of the metadata servers MDS0 is larger than a target load value or not; if yes, comparing current load values of all the metadata servers MDSn and the target load value, and selecting all the metadata servers MDSn of which the current load values are smaller than the target load value as all target metadata servers; pollingall the target metadata servers, exporting the catalogs of the metadata servers MDS0 to corresponding target metadata servers till the load values of the metadata servers MDS0 are not larger than thetarget load value. The efficiency of load balancing and the performance of the distributed file system are improved.
Owner:ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
Self-balancing basket
InactiveCN104790645APrevent excessive tiltReduce accidentsWindow cleanersBuilding support scaffoldsInductorEngineering
The invention belongs to the field of building tools, in particular to a self-balancing basket. Balance is inducted through a horizontal inductor. Running of a motor is controlled through a control device, the basket is kept balanced in the lifting process, the self-balancing of the basket in the ascending and descending process is achieved, and it is avoided that in the ascending and descending process of the basket, accidents are caused by excessive inclining.
Owner:安徽省东润物业管理有限公司
Coal-pillar-free self-forming roadway balanced mining design method and system
InactiveCN113803066ARealize automatic balanceAchieving stress compensationUnderground chambersUnderground miningMining engineeringStructural engineering
The invention discloses a coal-pillar-free self-forming roadway balanced mining design method and system. The method comprises the following steps of obtaining a rock mass fragmentation and expansion coefficient through a rock mass fragmentation and expansion function equation; based on the rock mass breaking and expanding coefficient, the roof cutting height enabling a stope to achieve breaking and expanding balance is obtained through a stope breaking and expanding control equation; a series of indoor tests are utilized to obtain roof stratum friction coefficients, and the roof cutting angle is obtained when the stope roof caving resistance is minimum through kerf surface friction comparison; and self-forming roadway support balance parameters are obtained, the roof cutting height, the roof cutting angle and the self-forming roadway support balance parameters are verified to obtain balance mining design parameters, and finally a coal-pillar-free self-forming roadway balance mining solution is formed. According to the coal-pillar-free self-forming roadway balanced mining design method and system, the breaking and expanding parameters, the top cutting parameters and the supporting parameters can be accurately calculated, and the accurate coal-pillar-free self-forming roadway balanced mining solution is formed.
Owner:王琦
Automatic balanced support mechanism for uneven ground support
InactiveCN102092370ARealize automatic balanceGuaranteed automatic stepping movementVehicle fittings for lifting and manoeuvringRoad surfaceEngineering
The invention discloses an automatic balanced support mechanism for uneven ground support, which comprises a running frame and two longitudinal traveling wheel sets, wherein the two longitudinal traveling wheel sets are installed on the running frame, and the inside of each longitudinal traveling wheel set is provided with a reverse rail wheel and a hanging roller; the reverse rail wheel is connected with a motor, and connected with the hanging roller by a transmission mechanism; one of the two longitudinal traveling wheel sets comprises an inner box and an outer seat, the reverse rail wheel and the hanging roller are installed in an inner seat, the inner box is connected with the outer seat by positioning pins, and the balancing function of the automatic balanced support mechanism is realized through relative swinging. The automatic balanced support mechanism disclosed by the invention not only ensures the automatic step motion of the engineering machinery, but also realizes the support and balancing of the engineering machinery when the engineering machinery is moved, therefore, the safety performance of the automatic balanced support mechanism is better; and meanwhile, the automatic balanced support mechanism is suitable for any uneven road surface, thereby reducing a great deal of preliminary works of the engineering machinery such as road surface leveling and the like performed before traveling, improving the construction efficiency, and shortening the construction period.
Owner:HUNAN WUXIN MACHINERY
Height limit detection method and device based on machine vision recognition
InactiveCN110940319AMeet real-time requirementsEasy to detectPicture interpretationMachine visionEngineering
The invention discloses a height limit detection method and device based on machine vision recognition, and the method comprises the following steps: adjusting the focal length of a camera of a photographing mechanism, and calibrating an image coordinate system of the camera; acquiring a vehicle image; acquiring height information of the target vehicle according to the longitudinal scale corresponding to the depth scale line of the target vehicle in the vehicle image; acquiring an image of a height limiting rod in front of the target vehicle; obtaining height information of a target height limiting rod according to a longitudinal scale corresponding to a scene depth scale line of the height limiting rod image where the target height limiting rod is located in the height limiting rod image;comparing the height information of the target height limiting rod with the height information of the target vehicle; obtaining a height difference. According to the detection method, vehicle overallheight detection and height limiting rod height detection can be realized, analysis is performed by comparing the heights of the detection vehicle and the height limiting rod, and whether the heightis ultrahigh is judged according to the analysis result.
Owner:广东互动电子有限公司
Double-circulation device and method for recovering and heating furnace-entering air through waste heat of boiler discharged smoke
ActiveCN105351915AGuaranteed safe operationAvoid condensationFeed-water heatersSocial benefitsAutomatic control
The invention provides a double-circulation device and method for recovering and heating furnace-entering air through waste heat of boiler discharged smoke. The double-circulation device is connected with a turbine steam extraction and heat return system through open circulation, and therefore recycled smoke waste heat and heat required for heating put-into-furnace air are automatically balanced, smoke is prevented from dewing, smoke low-temperature corrosion is prevented, it is ensured that the influences of environment temperature changes and unit load changes on boiler smoke discharge temperature can be offset under all working conditions, and the inlet smoke temperature of electric dust collectors and the temperature of put-into-furnace air can be automatically controlled under all the working conditions no matter how the environment temperature changes and no matter how the unit load changes. The double-circulation device and method have social benefits and economic benefits of being capable of saving coal and water and decreasing the smoke discharge amount.
Owner:上海羲蓝节能环保科技有限公司
Remote valve control method
InactiveCN101995071ARealize room temperature controlReduce energy consumptionSpace heating and ventilation safety systemsLighting and heating apparatusTemperature controlEngineering
The invention relates to a valve control method, in particular to a remote valve control method which is used in a central air conditioner system for storing energy and combining terrestrial heat. A central air-conditioner has the functions of multi-mode automatic switching control, dynamic flow balance control and room constant temperature control through adopting a programmable controller with high mathematical function calculating function, an electric executer and a plurality of valves and acquiring information of parameters of controlled objects of all places in the air conditioner system. The method can be applied to the central air conditioner system with an energy storage water tank and is especially suitable for the central air conditioner system for storing the energy and combining the terrestrial heat. The valves are independently controlled dynamically by using the programmable controller so as to directly realize the automatic balance of the dynamic flow and further realize the room constant temperature control of the central air conditioner. When the valve control method is adopted, the air temperature fluctuation value of a user end is 40-90 percent less than that calculated in the traditional valve control method, and the comprehensive energy consumption of the central air conditioner system is saved 8-33 percent than that adopted in the traditional valve control scheme.
Owner:上海精普机电科技有限公司
Method used for adjusting three-phase unbalance of zone area
InactiveCN106130045ARealize automatic balanceSimple methodPower network operation systems integrationPolyphase network asymmetry elimination/reductionElectricityReal-time data
The invention relates to a method used for adjusting three-phase unbalance of a zone area. According to the method, a three-phase balance adjustment concentrator is mounted beside a distribution part, and a tower pole having access wires is selectively equipped with multiple three-phase balance adjustment switches according to a load situation; the real-time data is analyzed and determined by the three phase balance adjustment concentrator, a distribution transform three-phase load unbalance degree reaches above 15% and continues five minutes, statistics of a combination result of all switch loads on a largest load phase is carried out, an unbalance degree after assumed phase change is calculated, an instruction is emitted to the corresponding switch on the largest load phase after optimal taking, loads are driven by the multiple three-phase balance adjustment switches to realize switching from present phases to target phases without power failure, and thereby three-phase automatic adjustment is realized. Through the method similar to a manual mode, work intensity of onsite workers can be effectively reduced, work efficiency is improved, line loss is reduced, great importance for prolongation of distribution transform service life is realized, and electrical appliances are made to realize safe and reliable operation.
Owner:国网天津宝坻供电有限公司 +1
Coal-pillar-free self-roadway-forming balanced mining method and equipment
InactiveCN113914861AAvoid uneven settlementRealize automatic balanceUnderground miningSurface miningCoal pillarMining engineering
The invention discloses a coal-pillar-free self-roadway-forming balanced mining method and equipment. The method comprises the following steps: performing coal mining on a working surface, and reserving and maintaining a roadway space at the same time; obtaining the mining volume and the breaking and expanding coefficient of roof caving gangue corresponding to the working face; based on the breaking and expansion coefficient and the mining volume, obtaining the roof cutting height of the end of the working face roof, so that the breaking and expansion volume of roof caving gangue is equal to the mining volume; performing vertical joint cutting on the roof at the end of the working face based on the top cutting height; and performing gangue blocking support on the roadway space and forming a roadway side. According to the method, directional joint cutting is performed on the side roof of the roadway goaf, so that under the action of self weight and mine ground pressure, the overlying roof rock stratum on the goaf collapses in a large area within the height range of the joint cutting, the goaf is fully broken and expanded, the broken expansion amount of collapsed gangue is equal to the mining amount, and automatic balance of the working face goaf is achieved.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)
Control system and method for helicopter electrically-driven tail rotor
ActiveCN108528737AReduce vibration levelsRealize automatic balanceDepending on power plant typeAutomatic controlGyroscope
The invention relates to a control system and method for a helicopter electrically-driven tail rotor. The control system comprises a pedal, an angular displacement sensor, a helicopter controller, a motor controller, a driver for a tail rotor driving motor, a motor driver of a tail rotor variable pitch structure, a detection unit, a gyroscope, a motor-reducer integrated structure capable of driving the tail rotor to rotate, and an electrically-driven variable pitch structure. By use of the control method, according to a pedal angle change and a helicopter tail gesture change of gyroscope detection, the revolving speed of the tail rotor driving motor is automatically controlled, and a variable pitch structure is regulated so as to realize the balance or the diversion of the helicopter. Theinvention provides the control system and method for the helicopter electrically-driven tail rotor, and replaces the internal combustion engine driving and the excessive transmission shaft of a traditional helicopter, so that the quick and stable automatic balance and diversion of the helicopter can be realized, operation difficulty is reduced, and reliability and stability are enhanced so as to be favorable for accelerating the technology of an electric helicopter to be progressed and developed.
Owner:HEFEI UNIV OF TECH
Automatic balancing mechanism for platemaking roller
InactiveCN102174950ARealize automatic balanceStable equilibriumRotating bodies balancingCircular discControl system
The invention relates to an automatic balancing mechanism for a platemaking roller. A corresponding device is arranged for the roller aiming at the unbalance generated on a platemaking roller body and different widths of plates on the platemaking roller body so as to realize the automatic balance under multiple sizes of plates. The automatic balancing mechanism is characterized in that: outer discs 14 at two ends of a roller 1 are provided with arc-shaped balancing grooves 17; a movable balancing block 18 is arranged in each balancing groove 17; and when different widths of printing plates are loaded, tail plate clamp bars 13 move to drive the balancing grooves 17 on the outer discs 14 to rotate so that the balancing blocks 18 move to corresponding balancing positions in the balancing grooves 17 along inner grooves of cams 19 and the whole roller is kept to be in a balancing state. The automatic balancing mechanism has the advantages that the same platemaking machine can be used for making multiplex widths of printing plates; a complex balancing drive control system is not required in the roller design, therefore the design cost of the roller and the production cost of the platemaking machine are greatly reduced; and the convenience for use and the easiness of general implementation are realized.
Owner:南京普胜印刷技术有限公司
Power mixed conversion system
InactiveCN103208821AEasy balance controlRealize automatic balanceElectrical apparatusVoltage stabilityPower grid
The invention provides a power mixed conversion system which comprises a modularized multi-level converter (MMC) and a direct current (DC)-DC isolator. The alternating current side of the MMC is connected with a high-voltage alternating current power grid, and the direct current side of the MMC is connected with a high-voltage direct current power grid. An anode and a cathode at the direct current input end of the DC-DC isolator are connected with an anode and a cathode of the high-voltage direct current power grid respectively. The DC-DC isolator comprises capacitors connected in parallel at the direct current input end and the direct current output end of the DC-DC isolator respectively, and the direct current output end of the DC-DC isolator is connected with a low-voltage direct current power grid. The output capacitors on the direct current side of the DC-DC isolator are connected in parallel. When the direct current capacitor voltage of the MMC is unbalanced, the portion in the MMC with high capacitor voltage passes through the DC-DC isolator by means of the low-voltage direct current power grid and passes through the DC-DC isolator again to charge the capacitors with low voltage and increase voltage value. Therefore, voltage stability on the direct current side can be ensured, and automatic balancing of the direct capacitor voltage of the MMC can be achieved accordingly.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
Direct-current solid-state transformer with bipolar output voltage self-balancing capability
InactiveCN111262443ARealize automatic balanceLow costDc network circuit arrangementsEfficient power electronics conversionHemt circuitsEngineering
The invention discloses a direct-current solid-state transformer with bipolar output voltage self-balancing capability, and belongs to the field of power electronic technology and direct-current powertransmission and distribution. A high-voltage side direct-current bus capacitor, a first bridge arm and a second bridge arm are connected in parallel between the anode and cathode of a high-voltage direct-current bus; a low-voltage side split direct-current bus capacitor, a load, a third bridge arm and a fourth bridge arm are connected in parallel between the anode and cathode of a low-voltage direct-current bus; a high-voltage side circuit is provided with an output end; a low-voltage side circuit is provided with an input end; a resonant cavity is provided with a high-voltage side and a low-voltage side; the output end is connected with the high-voltage side; the input end is connected with the low-voltage side; one end of a balance inductor L1 is connected with an input end g; one endof a balance inductor L2 is connected with an input end f; and the other end of the balance inductor L1 is connected with the other end of the balance inductor L2 and connected with the low-voltage side split direct-current bus capacitor. The topology of the invention directly outputs bipolar direct-current voltage; bipolar direct-current output can be realized without constructing a voltage balancer by an additional switching device, so that cost is saved.
Owner:HARBIN INST OF TECH
Rotary compressor parallel connection system
ActiveCN104633998ARealize automatic balanceSimple setupCompressorVapor–liquid separatorHigh pressure
The invention relates to a rotary compressor parallel connection system which comprises a plurality of compressors, an oil separator, oil balancing pipes and an oil return pipe. The compressors are connected with one another in parallel, and exhaust pipes of the multiple compressors are connected with the same oil separator by high-pressure pipes; oil inlets of the oil balancing pipes are connected with shells of the compressors and are positioned in locations above the lowermost oil level of the compressors, and oil outlets of the oil balancing pipes are connected with the exhaust pipes or the high-pressure pipe; the oil separator is connected with gas suction openings of gas and liquid separators of the compressors by the oil return pipe. The rotary compressor parallel connection system has the advantages that the oil balancing pipes are mounted on the shells of the compressors, surplus refrigerant oil in the compressors can be drained and can be taken back into the shells of the various compressors by the oil return pipe, accordingly, the oil can be automatically balanced, and the rotary compressor parallel connection system is simple in structure and low in cost; the oil inlets of the oil balancing pipes are arranged above the upper end surfaces of cylinders of the compressors, and accordingly oil starvation can be effectively prevented when the compressors run at high speeds.
Owner:MITSUBISHI ELECTRIC GUANGZHOU COMPRESSOR
Self-balancing non-isolated modular multilevel DC-DC converter
ActiveCN107681886ARealize automatic balanceAvoid AC circulationEfficient power electronics conversionApparatus without intermediate ac conversionCapacitanceEnergy transfer
The invention provides a self-balancing non-isolated modular multilevel DC-DC converter, which comprises a power main circuit and a power balance circuit which are connected to each other, wherein thepower balance circuit comprises a plurality of air core inductors and a diode; the air core inductors are sequentially connected with the diode in series; the power main circuit is formed by sequentially connecting an input filter inductor, an output buffer inductor and a plurality of submodules through a series chain in series; and when the submodules are in a removal state, a bus capacitor of one submodule and the bus capacitor of the adjacent submodule carry out energy transfer through the power balance circuit. AC running through a bridge arm of the converter is avoided, the switching loss is reduced and the DC side filter inductance is reduced.
Owner:SHANGHAI JIAO TONG UNIV
Valve control method integrating dynamic flow balance and energy control and valve
ActiveCN111322447AReal-time accumulationRealize instant controlOperating means/releasing devices for valvesEfficient regulation technologiesEnergy controlControl manner
The invention relates to an electric valve and a control technology thereof, and aims to provide a valve control method integrating dynamic flow balance and energy control and a valve. A front valve body and a rear valve body of the valve are connected to a differential pressure sensor through pressure guide pipes, and the differential pressure sensor is connected with an intelligent controller through a signal line; a return water temperature sensor is arranged on the valve body on the water inlet side, and the valve further comprises a water supply temperature sensor, the water supply temperature sensor is arranged on a water supply pipeline and is correspondingly connected to the intelligent controller through a signal line; the intelligent controller is connected with an actuator through a signal line, and the actuator is fixed to the valve body through a support and connected to a V-shaped ball valve through a lengthened shaft. According to the valve, the sum of all flow / energy ina longer time can be integrated by using a flow / energy accumulation algorithm, so that the flow / energy in each time period can be controlled according to a target, and the purpose of balance adjustment is achieved; under the same condition, the energy consumption can be reduced by 30% to the maximum extent, and great energy-saving benefits can be obtained; and a control mode can be selected according to actual requirements, and field application is more flexible.
Owner:HANGZHOU ZETA TECH
A tower type slag granulation steam recovery device
The invention discloses a tower-type slag granulation steam-recovery unit, comprising a tower-type shell, wherein the bottom of the shell is provided with a steam drainage tube; a spray washing unit, a front-section steam-water separator, a mixer, a back-section steam-water separator, an air blower and a steam discharge tube are sequentially arranged above the steam drainage tube in the longitudinal direction of the tower-like shell; and an air window is arranged on a wall of the tower-like shell between the front-section steam-water separator and the mixer. In the tower-type slag granulationsteam-recovery unit, a cold air cooling steam mode is adopted except a spray washing mode. Compared with a water cooling steam mode, the cold air cooling mode is adopted, thus the implementation costis lower, the wastes of water resources are avoided, and the recovery of steam condensates is realized beneficially. In the tower-type slag granulation steam-recovery unit, a mode that the water carried in steams is separated independently is adopted and the front-section steam-water separator, the mixer and the back-section steam-water separator as well as the air blower which are sequentially arranged are utilized, thus the coordination effects and the separation effects are good.
Owner:CISDI ENG CO LTD
Leveling device of vibrating seed disc of air vibration disc type seedling seeder and balance control method
PendingCN111937543ARealize automatic balanceImprove uniformityControl using feedbackSeed depositing seeder partsSeederAgricultural engineering
The invention provides a leveling device of a vibrating seed disc of an air vibration disc type seedling seeder and a balance control method, and belongs to the field of agricultural intelligent equipment. The leveling device comprises a rack, the vibrating seed disc, an inclination angle detection platform, an amplitude-adjustable eccentric connecting rod mechanism and a servo electric cylinder,wherein the vibrating seed disc is subjected to amplitude adjustment through the amplitude-adjustable eccentric connecting rod mechanism, and a vibrating seed disc supporting table fixed to the lowerend of the vibrating seed disc is fixed to the inclination angle detection platform provided with a double-shaft inclination angle sensor through a spring; and the inclination angle sensor collects the inclination angle of the inclination angle detection platform and sends the inclination angle to a main control unit, after processing, pulses are output to drive the servo electric cylinder througha servo motor driver, leveling of the inclination angle detection platform is completed, and therefore, the vibrating seed disc is leveled. Different amplitudes of different seeds can be adjusted, and the uniformity of the population boiling effect and the seed suction rate and the seeding effect of the air vibration disc type seedling seeder are improved.
Owner:JIANGSU UNIV
Self balancing composite tank oil and water substitution oil storage device
InactiveCN104260829ASimple structureCaused by pollutionHull interior subdivisionVessel movement reduction by mass displacementSystem structureFuel oil
The invention discloses a self balancing composite tank oil and water substitution oil storage device. The self balancing composite tank oil and water substitution oil storage device comprises a tank and a valve group arranged on the tank, wherein the tank is composed of an inner tank and an outer tank, the outer tank is a rigid tank of tube structure, two ends of the outer tank are provided with openings, the openings are sealed through shell covers, the inner thank is a flexible tank, the inner tank is arranged in the outer tank, one end of the flexible tank is open, the open end of the flexible tank overlaps one open end of the rigid tank, the edge of the open end of the flexible tank is pressed against the open end of the outer tank, which overlaps the open end of the flexible tank, through the corresponding shell cover so as to form a seal structure, and therefore the interior of the composite tank is divided into two spaces which seal each other, and fuel oil can be selected and stored in the storage space A or the storage space B according to features of fuel oil or substitute water which is stored. The self balancing composite tank oil and water substitution oil storage device has the advantages of being compact and reliable in system structure, simple in running, good in self balancing, good in economical efficiency, high in reliability, and suitably used on ships where a large amount of the fuel oil needs to be carried and overall space is limited, and causes no pollution to the fuel oil during the oil and water substitution process.
Owner:SHANGHAI MICROPOWERS
A self-balancing maglev rotor system based on same-frequency displacement adaptive filtering
ActiveCN103336436BImproved auto-balancing accuracyAccurately estimate and trackAdaptive controlMagnetic bearingAdaptive filter
Owner:重庆高孚透平科技有限公司
Slag granulation steam recovering device
The invention discloses a slag granulation steam recovering device, which comprises a steam exhaust chimney, wherein the bottom end of the steam exhaust chimney is provided with a water discharging structure; a steam guide pipe communicated with the inner cavity of the steam exhaust chimney is transversely above the bottom end face of the steam exhaust chimney; a horizontal flow guide pipe I is transversely arranged above the steam guide pipe; the outlet end of the horizontal flow guide pipe I is connected with a vertical flow guide pipe; a spray washing device is arranged in a pipe at the connected part of the horizontal flow guide pipe and the vertical flow guide pipe; the lower end of the vertical flow guide pipe is closed to form a water collecting pit; a horizontal flow guide pipe II is arranged above the water collecting pit; a front steam and water separator is arranged in the middle of the horizontal flow guide pipe II, and the outlet end of the horizontal flow guide pipe II is connected to a mixer; and a rear steam and water separator, a fan and a steam exhaust air cylinder are arranged in the mixer in turn from bottom up, an air inlet window is formed on the wall of the mixer below the rear steam and water separator. The structure of the slag granulation steam recovering device is reasonably designed, the matching effect is desirable and the separation effect is excellent.
Owner:CISDI ENG CO LTD
Novel automatic pump truck balancing system
PendingCN112627531AImprove securityRealize automatic balanceVehicle fittings for liftingBuilding material handlingGyroscopeGreen-light
The invention belongs to the technical field of intelligent concrete pump truck control, and relates to a novel automatic pump truck balancing system. The system comprises a pump truck, a balance system processor, a gyroscope, a GPS module, a language broadcaster, a supporting leg oil cylinder, a supporting leg oil cylinder green light, a supporting leg oil cylinder yellow light, a supporting leg oil cylinder red light, an oil pipe pressure sensor, an oil pipe, a distance sensor, a hardness sensor, a data transmission bus and a network platform. Automatic balance of supporting legs can be achieved, and the problem that possibly due to the fact that the experience of a concrete pump truck operator is insufficient, the truck cannot be balanced and potential safety hazards are caused is solved.
Owner:QINGDAO JIUHE HEAVY IND MACHINERY
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