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Ultrasonic motor driving device and ultrasonic diagnosis apparatus
InactiveUS20060250046A1Reduce stepsUnstable operationUltrasonic/sonic/infrasonic diagnosticsUltrasound therapyLow speedEngineering
A technology, wherein unstable operation of the ultrasonic motor is prevented, when the ultrasonic motor is driven at the lower speed out of at least two types of speeds, and life extension is attempted, is disclosed, and according to this invention, when the ultrasonic motor 3 is driven at a comparatively low-speed during normal driving, unstable operation due to driving at a comparatively low-speed can be prevented and life extension can be attempted by driving the ultrasonic motor at a comparatively high-speed every predetermined period of time.
Owner:KONICA MINOLTA INC
Waste pyrolysis system with adjustable oil, gas and carbon and method
ActiveCN104087340ALightweightLow viscositySolid waste disposalSludge treatment by pyrolysisThermodynamicsFlue gas
The invention relates to a waste pyrolysis system with adjustable oil, gas and carbon and a method. The system comprises a pre-reaction section, a main reactor, a conditioner and a particle separator. The front of the pre-reaction section is connected to a feeder and the tail of the pre-reaction section is connected to the main reactor. The conditioner is connected after the main reactor. The particle separator is connected after the conditioner. In specific, waste having a water content not more than 60% is fed into the pre-reaction section through the feeder, reacted waste is fed to the main reactor, residue coke generated after the reaction is finished is fed into the conditioner and a generated volatile material is discharged in a forced manner into the conditioner to be contacted, reacted and conditioned with the residue coke at the same time. The conditioner achieves conditioning of the residue coke and the volatile material at the same time. The volatile material after being conditioned is fed into the particle separator to output a clean volatile material. The residue coke after conditioning has a calorific value of 3.37-6.74 MJ / kg, and can be used as building raw materials or is conveyed to a sanitary landfill. The working temperature of the pre-reaction section is 105-298 DEG C and an inert gas or flue gas is fed into the pre-reaction section. The working temperature of the main reactor is 450-650 DEG C. The working temperature of the conditioner is 700-900 DEG C. The system and the method can obtain oil with better quality and more combustible gases and are adapt to changes of the water content of the waste.
Owner:上海济德能源环保技术有限公司
Multiple air-conditioning unit pipe device
InactiveCN101063567AAvoid starting difficulties or even damageAvoid harmFluid circulation arrangementVapor–liquid separatorMagnetic valve
The invention discloses a pipe line of a multiple air conditioner group, comprising an air pipe, a liquid pipe, an oil pipe and a balance pipe communicated with every outer low pressure side, the special communicated location is every outer air-liquid separator. The balance pipe is arranged in the magnetic valve located at the main device side of the multiple air conditioner groups. The magnetic valve is started when the multiple air conditioner groups is producing heat and is shut down in the heat producing oil modification process. The balance pipe is arranged with a single direction valve arranged at the child device side of the multiple air conditioner groups, the cooling liquid could only be flow out from the child device. The balance pipe is arranged with balance pipe cutoff valve arranged on the balance pipe at the main device side and every child device side of the multiple air conditioner groups. The problem that the device is hard to start or being damage caused by the accumulation of the cooling liquid when the multiple air conditioner groups are producing heat and the child device is shut down could be avoided.
Owner:HAIER GRP CORP +1
Coal mine methane gas oxidation device
InactiveCN101915117AAchieve multi-stage superheatingAvoid temperatureGas removalInsulation layerCoal mine methane
The invention relates to a coal mine methane gas oxidation device, comprising an outer shell and a honeycomb ceramic oxidation bed, wherein a heat insulation layer is distributed on the inner wall of the outer shell; the upper and lower ends of the honeycomb ceramic oxidation bed are respectively provided with upper and lower rectifying chambers; the side parts of the upper and lower rectifying chambers are provided with ports which are respectively communicated with an intake pipe and an exhaust pipe; the intake pipe and the exhaust pipe are respectively provided with an intake reversing valve, an exhaust reversing valve, an intake pipe temperature sensor, an exhaust pipe temperature sensor, an intake pipe gas concentration sensor and an exhaust pipe gas concentration sensor; the upper and lower parts of the honeycomb ceramic oxidation bed are respectively provided with upper and lower flow homogenizers; the middle part of the honeycomb ceramic oxidation bed is provided with a starting electric heater; the upper and lower parts of the starting electric heater are provided with built-in heat exchangers at intervals; and the back of the shell is provided with an upper rectifying chamber temperature sensor in the middle of the upper rectifying chamber, a temperature sensor at the middle of the honeycomb ceramic oxidation bed and a lower rectifying chamber temperature sensor at the middle of the lower rectifying chamber which are inserted at intervals. The invention has the advantages of compact structure, convenient operation, small occupied area and low investment and operation cost.
Owner:CHINA UNIV OF MINING & TECH
Power level simulation control method and device of three-phase alternating current motor
ActiveCN109839830AAvoid samplingAvoid running unstableSimulator controlMathematical modelClosed loop
A power level simulation control method and device of a three-phase alternating current motor are disclosed. The method is characterized by acquiring a three-phase current of a main loop of a motor simulator and a direct current bus voltage through sampling, and determining whether a three-phase current value and a direct current bus voltage value exceed a preset protection threshold; if the three-phase current value and the direct current bus voltage value exceed the preset protection threshold, carrying out protection motion; if the three-phase current value and the direct current bus voltage value do not exceed the preset protection threshold, calculating an equivalent counter electromotive force output by a motor simulator according to a simulated target motor and a mathematical modelof the motor simulator so as to control the motor simulator so that voltage and current characteristics of a three-phase port are not different from those of the simulated target motor. Simultaneously, a simulated target motor operating state calculated according to the mathematical model is fed back to a motor driver so as to complete a motor control process. In the invention, a three-phase portcurrent value of the motor simulator and the direct current bus voltage value only need to be sampled so as to avoid the sampling of a three-phase port voltage containing a large number of higher harmonics; and simultaneously, the motor simulator does not need to carry out closed-loop control on the three-phase port current, and system stability is improved.
Owner:TSINGHUA UNIV
Continuous hydrolysis process for preparing glyphosate by glycine method
ActiveCN103739625BGuaranteed hydrolysis effectLess side effectsGroup 5/15 element organic compoundsGlycineHydrolysis
The invention provides a continuous hydrolysis process for preparing glyphosate by a glycine method. The process comprises following specific steps: (A) conveying a condensation reaction synthetic solution into a mixing reactor by a pump and controlling a material temperature to be lower than 55 DEG C to finish an acid adding and neutralizing process; (B) carrying out gas-liquid separation on materials discharged by a heat exchanger and enabling condensed gas and liquid to respectively enter a methylal recycling tower to recycle methylal; (C) enabling kettle bottom liquid discharged from the methylal recycling tower to enter a methanol recycling tower to recycle methanol; enabling kettle bottom liquid discharged from the methanol recycling tower to enter a hydrolysis tower to finish a hydrolysis reaction; and (D) carrying out flash evaporation on kettle bottom liquid discharged from hydrolysis tower; removing water and acid and enabling the kettle bottom liquid enter a crystallization kettle; and cooling and crystallizing under agitation to obtain the glyphosate.
Owner:SICHUAN LESHAN FUHUA TONGDA AGRO-CHEM TECH CO LTD
Information display device and information display method
InactiveUS6917359B1High voltageAvoid troubleCathode-ray tube indicatorsNon-linear opticsLoudspeakerLiquid-crystal display
An information display device which is structured as an electronic book with liquid crystal displays which display information stored in a storage medium. The information display device further has a first driving section which drives the liquid crystal displays and a second driving section which drives the recording medium, and while the displays are reset, the second driving section is inhibited from driving the storage medium. Also, the information display device has a speaker, and when a mode to display information on the liquid crystal displays at a high speed is selected, the speaker is inhibited from reproducing sound.
Owner:MINOLTA CO LTD
Cascade stage air conditioning system optimization control method based on energy consumption models of water chilling units
ActiveCN110486896AMeet load demandExcellent operating costSpace heating and ventilation safety systemsLighting and heating apparatusCurrent loadSupport vector regression machine
The invention discloses a cascade stage air conditioning system optimization control method based on energy consumption models of water chilling units. The method comprises the following steps that related data of a cascade stage air conditioning refrigeration system are collected, and the ice melting amount and the unit maximum refrigerating load upper limit are estimated; energy consumption model modeling is carried out on a base-load water chilling unit and a double-working-condition water chilling unit in the cascade stage air conditioning refrigeration system by adopting a support vectorregression machine; the actual unit running quantity is calculated according to the estimated ice melting amount, the unit maximum refrigerating load upper limit and the load demand at the current moment, and the unit group control is achieved; the base-load water chilling unit, the double-working-condition water chilling unit and the ice melting amount load are distributed, parameter optimizationis achieved by combining with the energy consumption models of the units so as to enable the operation cost to be the lowest while the current load and boundary conditions are met; and the optimal updating period is set, and re-optimizing is carried out after each period is finished. According to the control method, the operation cost is the lowest while the current load and boundary conditions are met.
Owner:NR ENG CO LTD +1
A system and method for waste pyrolysis with adjustable oil, gas and charcoal
ActiveCN104087340BSave the hassle of frequent replacementLightweightSolid waste disposalSludge treatment by pyrolysisFlue gasWorking temperature
Owner:上海济德能源环保技术有限公司
Boiler combustion optimization method and system based on air/pulverized coal and CO online monitoring
ActiveCN112524637AExpand the search scopeAdd combinationAir supply regulationProcess engineeringCoal
The invention belongs to the related technical field of combustion optimization, and discloses a boiler combustion optimization method and system based on air / pulverized coal and CO on-line monitoring. The method comprises the steps of acquiring the primary air / pulverized coal concentration, the primary air flow velocity and the CO concentration at multiple measurement points in a hearth in real time; respectively acquiring the corresponding relationship between the CO concentration and the boiler operation comprehensive cost, the primary air / pulverized coal concentration, the flow velocity and the secondary air air door opening degree matrix under multiple working conditions; acquiring threshold ranges of the CO concentration, the primary air / pulverized coal concentration and the flow velocity under the various working conditions and the secondary air air door opening degree optimization interval by taking the optimal boiler operation comprehensive cost as a standard; and detecting the primary air / pulverized coal concentration, the primary air flow velocity and / or the secondary air air door opening degree matrix when the CO concentration or the primary air / pulverized coal concentration or the primary air flow velocity monitored in real time is not within the corresponding threshold range. According to the method and the system, accurate adjustment of the boiler combustion sideis realized by monitoring the CO concentration of the boiler side and jointly adjusting the parameters of primary air and secondary air.
Owner:HUAZHONG UNIV OF SCI & TECH
Intelligent movable cabinet
The invention relates to the technical field of furniture articles, in particular to an intelligent movable cabinet, comprising a cabinet body and a drawer. It also includes a drive unit, a motion unit, an air header and a controller. Through the drive unit, the motion unit and a flexible board, on the one hand, the cylinder block is controlled to move on the first passage by the first air cylinder, so that the cylindrical block squeezes the No.1 elastic plate, and the roller rolls on the No.2 channel under the mutual cooperation of the No.1 elastic plate, the roller, the fixing plate, the limit block and the movable bar, so that the movable bar pushes the drawer to slide, thereby realizing the opening or closing of the drawer, reducing the time consumed by the user and improving the userexperience; on the other hand, according to the files that the user needs to view, the corresponding drawer is opened automatically, and the gas is applied on the flexible board, so that the files areejected through the flexible board, thereby improving the user experience.
Owner:合肥星火工贸有限公司
Magnetic levitation vertical shaft disc type coreless wind driven generator
InactiveCN111156132AReduce eddy current lossLight in massFinal product manufactureWind motor combinationsPhysicsStator
The invention relates to a magnetic levitation vertical shaft disc type coreless wind driven generator. The magnetic levitation vertical shaft disc type coreless wind driven generator comprises a blade device, a stator device and a rotor device; the blade device comprises a blade shaft and blades fixed to the top of the blade shaft, the stator device comprises an outer shell and a disk-shaped non-magnetically conductive support fixed to the inner side of the outer shell, the support is wound with a coil, the rotor device comprises a hollow magnetic levitation rotating shaft, a magnetic conductive disc fixed on the magnetic levitation rotating shaft and an annular magnetic pole fixed on the magnetic conductive disc, the lower end of the blade shaft is fixed to the upper end of the magneticlevitation rotating shaft, the lower end of the magnetic levitation rotating shaft extends into the outer shell and is rotatably connected with the outer shell, the magnetic levitation rotating shaftand the outer shell are provided with mutually matched magnetic pole pairs at positions close to each other, the magnetic pole pairs generate an upward suspension force on the magnetic levitation rotating shaft, and the coil on the support cuts the magnetic induction line of the annular magnetic pole during rotation of the rotor device to generate an induced current. The generator can be started with breeze, is low in loss, light in weight, small in vibration, low in manufacturing cost and long in service life.
Owner:NANJING UNIV OF INFORMATION SCI & TECH
Transcritical CO2 closed circulation system
PendingCN110966058AImprove cycle efficiencyAvoid running unstableSteam engine plantsEngineeringElectrical drive
The invention belongs to the field of energy conversion, provides a transcritical CO2 closed circulation system and aims at solving the problems of narrow operation range and low circulation efficiency of an existing transcritical CO2 power generation / driving unit. The system comprises a pre-compressor, a main compressor, a re-compressor, a turbine, a cooler, a low-temperature heat regenerator, ahigh-temperature heat regenerator and a heater; the pre-compressor, the main compressor, the re-compressor, the turbine, the cooler, the low-temperature heat regenerator, the high-temperature heat regenerator and the heater are connected to form a closed CO2 circulation loop; a shunting point and a mixing point are arranged on the closed CO2 circulation loop. The inlet of the re-compressor is communicated with the shunting point; the outlet of the re-compressor is communicated with the mixing point; and therefore, a shunting branch is formed; and the shunting branch is shunted out of the outlet of a first channel and converged at the outlet of a second channel. The system has high circulation efficiency. With the system adopted, the operation range of the unit is wide.
Owner:DONGFANG TURBINE CO LTD
Cover body assembly, washing machine, door cover body opening control method and computer equipment
ActiveCN106917239ASimple and elegant structureHigh operating stabilityOther washing machinesControl devices for washing apparatusMotor driveAgricultural engineering
The invention provides a cover body assembly, a washing machine, a clothes dryer, a door cover body opening control method, computer equipment and a computer readable storage medium, wherein the cover body assembly comprises a casing and a door cover body; the door cover body is openably and closeably arranged at the opening part of the casing surface; the cover body assembly also comprises a triggering device, a main controller, a motor and an ejecting rod; the triggering device is arranged on the casing and is used for obtaining a work instruction; the main controller is arranged in the casing, is connected with the triggering device and is used for processing the work instruction obtained by the triggering device; the motor is arranged on the casing and is connected with the main controller; the ejecting rod is connected with the motor; the motor drives the ejecting rod to extend out or withdraw; the ejecting rod is used for ejecting the door cover body open to the preset angle; the triggering device sends the obtained work instruction to the main controller; after the main controller processes the work instruction, an operation instruction corresponding to the work instruction is sent to the motor; the motor starts and drives the ejecting rod to extend out or withdraw.
Owner:WUXI LITTLE SWAN ELECTRIC CO LTD
Wide-width image scanning system and realization method thereof
ActiveCN104104826ASimple structureFast data transferPictoral communicationProgrammable read-only memoryAnalog front-end
The invention discloses a wide-width image scanning system and a realization method thereof, and solves problems that existing wide-width image scanning systems are low in data processing speed and complex in structure. The wide-width image scanning system comprises an upper computer, a USB3.0 controller of which the model number is EZ-USBFX3 and is bi-directionally connected with the upper computer, a CPU and an electric erasable and programmable read-only memory which are bi-directionally connected with the USB3.0 controller, and at least two CIS analog front ends which are arranged side by side. Each CIS analog front end comprises a CIS light source drive module which is connected with the CPU, a CIS sensor which is connected with the CIS light source drive module, and an analog-to-digital converter of which the input end is connected with the output end of the CIS sensor and the output end is connected with the input end of the CPU. The wide-width image scanning system is simple in structure and convenient to realize so that the wide-width image scanning system has characteristics of being large in data processing amount and high in processing speed, and thus the wide-width image scanning system is suitable for popularization and application.
Owner:CHENGDU HOLDTECS TECH
Three-stage integrated treatment system and method for organic biomass garbage
InactiveCN111215432AOvercome mobilityOvercome the clogging problemSolid waste disposalTransportation and packagingProcess engineeringEnvironmental engineering
The invention discloses a three-stage integrated treatment system for organic biomass garbage and a treatment method for the organic biomass garbage. The treatment system involves a three-stage fermentation reactor, a spiral feeding and discharging device, an external circulating coil and a deodorization device. According to the system, the kitchen garbage is subjected to micro-aerobic pretreatment by integrating a micro-aerobic process, an anaerobic process and an aerobic process, so that the problem of unstable operation caused by acidification in the anaerobic process is avoided; secondly,a horizontal plug flow mode and an integrated slow stirring mode are adopted, so that the mass transfer efficiency and the heat transfer efficiency in the anaerobic process are improved; and thirdly,the materials are conveyed on line in the micro-aerobic, anaerobic and aerobic processes in a multi-stage spiral conveying mode, and the problems of poor flowability and blockage of the material floware solved. The process is high in practicability, continuous and efficient, well solves the environmental problem caused by the urban kitchen garbage, comprehensively utilizes the wastes in a recycling manner, and is suitable for environment-friendly treatment of easily biodegradable organic wastes.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
Double-stage compression heat pump circulation system for deeply condensing steam exhaust
PendingCN109442804AAvoid deep compressionImprove the coefficient of performanceMechanical apparatusHeat pumpsEngineeringRefrigerant
The invention discloses a double-stage compression heat pump circulation system for deeply condensing steam exhaust, and relates to a heat pump circulation system. The system aims to solve the problemthat existing conventional heat pumps are all low in heat pump evaporation temperature and performance coefficient when used for deep recycling of steam exhaust waste heat; the system comprises a first compressor, a heat pump condenser, a second throttling expansion valve, a heat pump first evaporator, a third throttling expansion valve, a heat pump second evaporator, a second compressor, a firstheat-carrying medium pipeline, a second heat-carrying medium pipeline, a first steam exhaust pipeline, a second steam exhaust pipeline, a third steam exhaust pipeline, a first refrigerant pipeline, asixth refrigerant pipeline, a seventh refrigerant pipeline, an eighth refrigerant pipeline, a ninth refrigerant pipeline and a tenth refrigerant pipeline. The system is used for deep heat recovery ofthe steam exhaust of a roller bed conveying line, and the performance coefficient of the heat pump is improved through cascade evaporation and cascade compression.
Owner:SHANGHAI ENN NEW ENERGY TECH CO LTD
Gasification device for producing synthesis gas from high-moisture organic material
ActiveCN110616089APrevent agingReduce energy consumptionGasification processes detailsBulk chemical productionDolomiteProcess engineering
The invention provides a gasification device for producing synthesis gas from a high-moisture organic material, and belongs to the field of gasification devices. The gasification device for producingsynthesis gas from a high-moisture organic material comprises: a feeding device, 1-3 pyrolysis reactors, a gasification reactor, a solid particle separator, a residual coke box, a gas purification device and a combustion device. The pyrolysis reactor is vertically arranged and the gasification reactor is horizontally arranged, so that the pyrolysis reactor and the gasification reactor are arrangedin an L shape. According to the invention, the problem of unstable system operation caused by aging and failure of the catalyst is avoided; meanwhile, latent heat and volatile matter of water vapor and sensible heat and chemical heat of pyrolytic carbon are fully utilized, so that energy consumption is reduced, economical efficiency is improved, cheap activating agents such as dolomite can be conveniently added into materials with high moisture content to serve as catalysts under the necessary condition, and an expensive reactor for containing the catalysts does not need to be specially arranged.
Owner:TONGJI UNIV
Flax bending carding mechanism
InactiveCN108977942AContinuous smooth lifting movementImprove efficiencyCarding machinesCardingEngineering
The invention discloses a flax bending carding mechanism, and belongs to the field of textile processing machinery equipment. A material moving mechanism is horizontally arranged on one side above a fixing supporting frame, a carding mechanism is vertically arranged on the fixing frame located on the lower side of the material moving mechanism, the material moving mechanism comprises a driving mechanism and a translation mechanism, a suction plate supporting frame is horizontally arranged on the outer side of a driving belt, a translation guiding plate is slidably arranged on a translation guiding rod in the horizontal direction, a pressing mechanism is vertically arranged at the output end of a lifting and lowering air cylinder, a primary carding conveying belt and a secondary carding conveying belt are sequentially, vertically and symmetrically arranged on the carding supporting frame in the horizontal direction, a plurality of flax carding needles are uniformly arranged on the outersides of the primary carding conveying belt and the secondary carding conveying belt respectively, and an impurity loading hopper is horizontally and fixedly arranged on the lower side of the fixingsupporting frame. The mechanism has the advantages of reasonable structural design, flax bending and fixing can be conveniently and accurately conducted, stable translation can be conducted, carding processing of flax can be stably and efficiently conducted in the translation process, and demands of flax production processing are met.
Owner:徐阳
High-speed labeling machine capable of correcting label conveying and correcting method of machine
ActiveCN104354947APaste firmlyAvoid running unstableLabelling machinesProgrammable logic controllerInstability
The invention discloses a high-speed labeling machine capable of correcting label conveying and a correcting method of the machine. By taking a PLC (Programmable Logic Controller), a servo motor, a servo driver, an object measurement electric eye and a groove type optical label electric eye as main core parts, the continuous labeling operation is carried out; in view of instability of label conveying, each label is detected, calculated and finely adjusted; when the conveying deviation is mainly caused by slip of labels, the deviation value can be immediately loaded during conveying of next label by a system and the conveying distance is compensated, so that the labels are accurately conveyed.
Owner:ANHUI DOUBLE CRANE PHARMA
Information processing apparatus having electronic device whose operating speed is controlled, and method of controlling the operating speed of the electronic device
InactiveCN1991685AAvoid running unstableEnergy efficient ICTPower supply for data processingInformation processingEngineering
A power supply circuit generates a power supply voltage. The power supply voltage is applied to an electronic device. A voltage monitoring unit monitors a power supply voltage that is applied to the electronic device, and makes a request to a bus control unit to switch the operating speed of the electronic device in accordance with the power supply voltage such that the operating speed of the electronic device becomes lower as the power supply voltage drops. The bus control nit switches the transfer speed of a bus at the request of the voltage monitoring unit to switch the operating speed of the electronic device.
Owner:KK TOSHIBA
Dry-process electric bag combined dust removal system for eliminating smoke plume by using converter primary flue gas ultralow emission
PendingCN110184409AAvoid condensationGuaranteed temperatureManufacturing convertersIncreasing energy efficiencyFlame arresterEvaporative cooler
The invention relates to a dry-process electric bag combined dust removal system for eliminating smoke plume by using a converter primary flue gas ultralow emission. The rotary furnace is connected with a vaporization cooling flue, the evaporative cooling flue is connected with an evaporative cooler, the evaporative cooler is sequentially connected with an electrostatic dust remover, a multi-pipeanti-explosion flame arrester, a pulse cloth bag dust remover, a smoke eliminating device, a fan, a switching station and a chimney through a flue gas pipeline, wherein the switching station is further connected with a coal cabinet, the electrostatic dust collector, the multi-tube anti-explosion flame arrester and the pulse cloth bag dust remover are connected with a pneumatic ash conveying system, the pneumatic ash conveying system is connected with a compressed nitrogen gas source, the compressed nitrogen gas source is further connected with the evaporation cooler, the multi-tube anti-explosion flame arrester and the pulse cloth bag dust collector, the dry-process electric bag combined dust removal system for eliminating the smoke plume by the primary flue gas of the converter is anti-explosion and anti-condensation, the flue gas emission is ensured to reach the standard, the water vapor in the flue gas is eliminated, the corrosion to the pipeline is reduced, and the smoke plume is eliminated.
Owner:WUXI HONGQI DUST COLLECTOR EQUIP
SRM direct instantaneous torque control method for DC bus voltage dynamic adjustment
ActiveCN111193458AIncreased torque rippleReduce torque rippleAC motor controlElectric motor controlMechanical engineeringControl theory
The invention relates to an SRM direct instantaneous torque control method for DC bus voltage dynamic adjustment. According to the method, a DC-DC conversion circuit is added to the front end of a traditional asymmetric half-bridge power converter; an excitation path and a demagnetization path are decoupled, and a higher demagnetization voltage can be applied, so that the winding of the switched reluctance motor is demagnetized more quickly, corresponding buck-boost adjustment is performed on the DC bus voltage of the power converter according to different operating speeds of the switched reluctance motor, and the adjustment mode has the characteristic of opening angle optimization; the commutation rule of the switched reluctance motor is improved, and a commutation conduction region executes direct instantaneous torque control to reduce torque pulsation through higher demagnetization voltage under the condition of considering the optimal turn-on angle characteristic; in the full-rotating-speed operation range of the switched reluctance motor, a control strategy is controlled through direct instantaneous torque to reduce torque pulsation, and the control strategy does not need to be switched.
Owner:HEBEI UNIV OF TECH
Pressure stabilizing device and pressure stabilizing method for pneumatic equipment
InactiveCN102174989AAvoid running unstableAvoid labor intensityPipeline systemsEngineeringAtmospheric pressure
The invention relates to a pressure stabilizing device and a pressure stabilizing method for pneumatic equipment. According to the pressure stabilizing device, a compressed air storage tank (5) is arranged on a compressed air supply pipeline of the pneumatic equipment; and the volume of the compressed air storage tank (5) is 60 to 120 liters, and the pressure of the compressed air storage tank (5) is as same as the pressure required by production. By using the device and the method, air pressure is effectively supplied to the pneumatic equipment, influence of the pneumatic equipment such as an injection trolley, a chopstick inserting trolley and the like on the quality and the yield of a product when the air pressure is insufficient or instable is prevented, damage to the pneumatic equipment when the air pressure is instable is avoided, and the labor intensity of staffs is reduced at the same time of reducing the maintenance expense and effectively ensuring safe and stable operation of the equipment.
Owner:INNER MONGOLIA YILI INDUSTRIAL GROUP CO LTD
PCB (Printed Circuit Board) automatic detector
ActiveCN107202796AImprove stabilityReduces the possibility of large excursionsOptically investigating flaws/contaminationElectronic waste recyclingEngineeringComputer science
The invention provides a PCB (Printed Circuit Board) automatic detector. The PCB automatic detector comprises a transmission device, a first correcting mechanism and an image acquiring device, wherein the transmission device comprises a charging position for introducing a PCB to be detected, a first correcting position for initially correcting the PCB to be detected, and a detection position for acquiring an image of the PCB to be detected; the transmission device is used for transmitting the PCB to be detected to the first correcting position and the detection position in sequence from the charging position; the first correcting mechanism is used for correcting the PCB positioned at the first correction position; the image acquiring device is used for acquiring the image of the PCB positioned at the detection position. By adopting the PCB automatic detector, the first correcting mechanism is arranged, so that the transmission accuracy is increased; the transmission device is arranged, so that the transmission stability is improved; the image acquiring device is arranged, so that the detection efficiency is increased.
Owner:深圳宜美智科技股份有限公司
Gypsum line laminating device with film breakage-proof mechanism
InactiveCN112141409AReduce process stepsImprove efficiencyPackagingWebs handlingHobbingThin membrane
The invention discloses a gypsum line laminating device with a thin film breakage-proof mechanism, and relates to the technical field of gypsum line production. The problem of low efficiency is solved. The device specifically comprises a workbench fixed to the ground through supporting legs, a passive film feeding mechanism and an active leftover material winding mechanism are arranged on the outer walls of the two symmetrical sides of the workbench correspondingly, a main moving mechanism is arranged on the outer wall of the top of the workbench, first film covering mechanisms are arranged onthe outer walls of the two symmetrical sides of the main moving mechanism correspondingly, a second film covering mechanism is arranged on the outer wall of the bottom of the main moving mechanism, the second film covering mechanism comprises two heat sealing rollers, two hobbing cutters, a first sliding block and a compaction roller, two first sliding rods are slidably connected to the inner wall of the first sliding block, a lifting base is fixed to the outer walls of the bottoms of the first sliding rods through bolts, and the two heat sealing rollers and the hobbing cutters are rotationally connected to the inner walls of the two sides of the lifting base through rotating shafts correspondingly. The sealing and cutting steps are carried out at the same time, so that the process stepsare saved, and the efficiency is improved.
Owner:衡东县新塘镇顶峰装饰材料加工厂
Ice storage energy storage system
ActiveCN109945370ARealize switch controlAvoid the problem of large fluctuations in cooling powerMechanical apparatusLighting and heating apparatusPlate heat exchangerIce storage
The invention relates to an ice storage energy storage system. The ice storage energy storage system comprises a refrigeration unit, an ice storage groove and a plate heat exchanger and further comprises a cooling load statistic module used for carrying out statistication on loads of central air conditioners, an analyzing module used for determining an available machine time interval Tn1, a shutdown time interval Tn2, a peak time interval Tn3 and a peak cooling load value Mn1 of the central air conditioners and meanwhile determining a peak time interval T1-T2 and a peak value M within an ice storage cooling region, a decision module used for merging all the central air conditioners with the available machine time interval Tn1 and the shutdown time interval Tn2 within the same time intervalT into a central air conditioner cluster so that multiple central air conditioner clusters with the available machine time interval Tn1+ / -T and the shutdown time interval Tn2+ / -T as classification standards can be formed, and a switching module for providing four cooling modes for each central air conditioner cluster. According to the ice storage energy storage system, the refrigeration power ofthe ice storage groove and the refrigeration power of the refrigeration unit can be balanced, the situation that the utilization rate of the ice storage groove is low is avoided, meanwhile, the running time of equipment in the central air conditioners is balanced, and the loss of the equipment is reduced.
Owner:四川国锐工程设计有限公司
Modularized disc screening equipment for municipal solid waste
The invention provides modularized disc screening equipment for municipal solid waste. The modularized disc screening equipment comprises multiple groups of modularized screening units which are detachably connected; each modularized screening unit comprises a square support, each square support is provided with adjusting bases, the adjusting bases are symmetrically arranged on the two sides, without through holes, of the corresponding square support, every two adjusting bases are provided with no more than five rollers which are detachably connected and evenly distributed, the rollers comprise driving rollers and driven rollers which are rotatably connected with the driving rollers through chains, multiple coaxial discs which are evenly distributed are detachably connected to each roller, and multiple disc bases which are evenly distributed are integrally formed on each roller. According to the modularized disc screening equipment for the municipal solid waste, devices with different sizes are selected for different using conditions, and therefore resource waste is reduced; by arranging the detachable discs, the service life of the equipment is prolonged, the structure is stable, replacement is convenient, the equipment can be used for screening of small devices, and the cost is reduced.
Owner:天津巨杉环境技术股份有限公司
Thread control method and device based on cloud monitoring, electronic equipment and storage medium
PendingCN109840141AReasonable useImprove overall utilizationProgram initiation/switchingHardware monitoringReal-time computing
A thread control method based on cloud monitoring comprises the steps of configuring the initial maximum thread number in advance according to an initial configuration file of a system, and determining the initial maximum thread number as the current maximum thread number of the system; Obtaining process information of an application program currently running in the system and the number of bus processes currently used by the application program; Calculating the current thread utilization rate according to the current maximum thread number and the current used bus thread number; Judging whether the current thread utilization rate is greater than a preset thread utilization rate threshold or not; And when the front thread utilization rate is greater than a preset thread utilization rate threshold, reconfiguring the current maximum thread number of the system according to a preset thread configuration strategy. The invention further provides a thread control device based on cloud monitoring, electronic equipment and a storage medium. According to the invention, through cloud monitoring, when the operation state of the system changes, real-time adjustment of the maximum thread numberis realized, and reasonable utilization of system resources is ensured to the maximum extent.
Owner:PING AN TECH (SHENZHEN) CO LTD
Dry dust removal system for converter primary flue gas ultra-low emission and smoke plume elimination
PendingCN110184410AAnti-explosion naturalPlay a fire-stop roleIncreasing energy efficiencyManufacturing convertersFlame arresterEvaporative cooler
The invention relates to a dry dust removal system for converter primary flue gas ultra-low emission and smoke plume elimination. A converter is connected with a vaporization cooling flue, and the vaporization cooling flue is connected with an evaporation cooler; the evaporation cooler is sequentially connected with a multi-tube type anti-deflagration flame arrester, a pulse cloth bag dust remover, a smoke plume eliminating device, a fan, a switching station and a chimney through a flue gas pipeline, and the switching station is further connected with a gas cabinet; and the multi-tube type anti-deflagration flame arrester and the pulse cloth bag dust remover are connected with a pneumatic ash conveying system, the pneumatic ash conveying system is connected with a compressed nitrogen gas source, and the compressed nitrogen gas source is further connected with the evaporation cooler, the multi-tube type anti-deflagration flame arrester and the pulse cloth bag dust collector. According to the dry electric-bag combination dust removal system for converter primary flue gas ultra-low emission and smoke plume elimination, electrostatic dust removal is not adopted, so that the explosion venting problem of the electrostatic dust remover is eliminated; the design is anti-explosion, the structure is anti-condensation, and the emission of fuel smoke is guaranteed to reach standard; and water vapor in the flue gas can be eliminated, so that the corrosion to the pipeline can be reduced, and smoke plumes can be eliminated.
Owner:WUXI HONGQI DUST COLLECTOR EQUIP
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