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Motor-gear unit with integrated eccentric wheel gear
InactiveUS6661139B1High densityPrevents undesired rotationToothed gearingsDifferential gearingsElectric motorEngineering
Owner:ROBERT BOSCH GMBH
Drive axle of electric distribution torque
ActiveUS10065489B2Shorten speedMaintain speedElectric propulsion mountingToothed gearingsElectricityCoupling
An electric drive axle comprises: a housing; a drive motor having an output shaft for outputting torque; a main reducer configured to perform two-stage reduction to amplify the torque outputted from the output shaft; a differential including a differential housing, a planetary gear shaft, a left and right drive shafts rotating about an axis of rotation; a torque vectoring motor; a double row planetary gear reduction mechanism configured to amplify power outputted from the torque vectoring motor; a double row planetary gear torque vectoring mechanism connected to the double row planetary gear reduction mechanism and configure to receive torque outputted from the double row planetary gear reduction mechanism and output reverse torque in contrast to the torque received; and a single row double planetary gear coupling mechanism providing opposite direction torques to the left and right drive shafts respectively.
Owner:JILIN UNIV
Regeneration method and system for hydrochloric acid waste liquid
ActiveCN105862053AReduce heatReduce heat exchangeUsing liquid separation agentWater/sewage treatment by heatingFlue gasTower
The invention relates to a regeneration method for hydrochloric acid waste liquid. According to the method, a spray roasting process is adopted, and at least part of the hydrochloric acid waste liquid entering a Venturi preconcentrator is preheated hydrochloric acid waste liquid. The invention further relates to a regeneration system for the hydrochloric acid waste liquid. The regeneration system for the hydrochloric acid waste liquid comprises a roasting furnace, the Venturi preconcentrator, an absorption tower and at least one stage of washing mechanism which are sequentially connected through flue gas pipelines. At least one of the flue gas pipelines is provided with a heat exchange mechanism. The hydrochloric acid waste liquid enters the heat exchange mechanisms to serve as a refrigerant for heat exchange with flue gas, and refrigerant outlets of the heat exchange mechanisms are all connected with the Venturi preconcentrator. By preheating the hydrochloric acid waste liquid, the heat needed for heating concentration of the hydrochloric acid waste liquid in the Venturi preconcentrator is reduced, and thus more hydrochloric acid waste liquid can be heated by the same quantity of roasting flue gas in the Venturi preconcentrator, the processing efficiency of the Venturi preconcentrator is effectively improved, and meanwhile the energy consumption of the roasting furnace can be reduced.
Owner:WISDRI ENG & RES INC LTD
PM2.5 (Particulate Matter 2.5) detection device and manufacturing method thereof
ActiveCN103454194AImprove scalabilitySmall scalabilityParticle suspension analysisParticulatesEngineering
The invention relates to a PM2.5 (Particulate Matter 2.5) detection device and a manufacturing method of the PM2.5 detection device. The PM2.5 detection device comprises a particle separation mechanism for filtering and removing particles with the size more than 2.5 microns in needed quantitative air and a PM2.5 detection mechanism for carrying out detection on the content of PM2.5 in the quantitative air, wherein an outlet end of the particle separation mechanism is connected with an inlet end of the PM2.5 detection mechanism; the PM2.5 detection mechanism comprises a detection cavity; a detection light source and a light detector are arranged on the outer side of the detection cavity; light emitted by the detection light source enters the detection cavity through a light incidence window on the detection cavity; the light detector is used for receiving emergent light absorbed and scattered by PM2.5 particles of the detection cavity by a light emergent window on the detection cavity; the light detector is used for determining and outputting the concentration value of the PM2.5 according to the strength of the emergent light. The PM2.5 detection device is compatible with a conventional MEMS (Micro-electromechanical Systems) process; the process is simple and convenient, the precision and the effectiveness of the PM2.5 detection can be improved, and a miniaturized structure enables the PM2.5 detection device to have the characteristics of portability and real-time detection; the PM2.5 detection device is wide in applicable range and is safe and reliable.
Owner:JIANGSU R & D CENTER FOR INTERNET OF THINGS
Driver circuit for an electro-absorption or micro-ring modulator and optical transmitter comprising such driver circuit
ActiveUS20160119062A1High densityLow costElectromagnetic transmittersNon-linear opticsDriver circuitElectro-absorption modulator
A modulator driver circuit for providing a drive voltage to an electro-absorption modulator, such a Franz-Keldysh modulator, or to a micro-ring modulator, and an optical transmitter comprising such driver circuit, where said driver circuit comprises a differential amplifier and at least one differential branch of the differential amplifier being provided with a voltage offset. This provide for a bias voltage being adjustable within the driver circuit itself. Preferably, said differential amplifier is arranged for supplying drive voltage to two complementary driver outputs providing a reverse bias relative to the modulator. In one embodiment, said differential amplifier comprises a cascode in the differential branch not being provided with the voltage offset.
Owner:NVIDIA DENMARK APS
Hydrochloric acid waste liquid regenerating method and system
ActiveCN105887108AReduce wasteImprove recycling efficiencyUsing liquid separation agentWater/sewage treatment by heatingLiquid wasteFlue gas
The invention relates to a hydrochloric acid waste liquid regenerating method. The method adopts a spray roasting method, and comprises the following steps that part of waste heat of circulating liquid in a first-stage washing mechanism is recycled to be used for preheating at least one part of hydrochloric acid waste liquid entering a venturi preconcentrator. The invention further relates to a hydrochloric acid waste liquid regenerating system. The hydrochloric acid waste liquid regenerating system comprises a roasting furnace, the venturi preconcentrator, an absorption tower and one or more stage washing mechanisms, which are sequentially connected through a flue gas pipeline; a heat exchanging mechanism is arranged on a circulating liquid pipeline of the first-stage washing mechanism; a refrigerant inlet of the heat exchanging mechanism is connected with a hydrochloric acid waste liquid storing tank; a refrigerant outlet is connected with the venturi preconcentrator. The hydrochloric acid waste liquid is preheated by the circulating liquid in the first-stage washing mechanism, so that the energy is saved, the consumption is reduced, and the efficiency of regenerating and recycling hydrochloric acid can be improved; besides, the circulating liquid in the first-stage washing mechanism is cooled, and the heat exchanging capacity between the low-temperature circulating liquid and flue gas is large, so that the washing effect of the first-stage washing mechanism and the absorbing effect of the absorption tower can be improved.
Owner:WISDRI ENG & RES INC LTD
Pumping system for evacuating gas from a plurality of chambers and method for controlling the pumping system
InactiveUS20130259711A1Prevent overloadConstant throughputFlexible member pumpsPump controlProcess engineeringVacuum pump
A pumping system for evacuating gas from a plurality of chambers, includes at least one turbomolecular pump, at least two fore-vacuum pumps, at least one connection conduit extending between the at least two fore-vacuum pumps. and at least one transverse constriction for at least one of reducing and regulating gas flow.
Owner:PFEIFFER VACUUM GMBH
Transmission dual-H control mechanism
ActiveCN103968067AHigh strengthImprove operating experienceGearing controlH controlElectrical and Electronics engineering
Owner:SHAANXI FAST GEAR CO
Dry desulfurization reaction device
PendingCN110694459ACompact and reasonable layoutSave layout spaceGas treatmentDispersed particle separationFlue gasSorbent
The invention relates to the technical field of desulfurization in high-pollution industries such as electric power, metallurgy, coking and cement, and particularly provides a dry desulfurization reaction device which comprises a first channel and a second channel which are adjacently arranged in parallel, wherein the starting end of the first channel is a flue gas inlet, the tail end of the firstchannel is communicated with the starting end of the second channel, and the tail end of the second channel is a flue gas outlet; a first adsorbent injection port is formed in a position, close to the starting end of the first channel, of the first channel, and an adsorbent injected from the first adsorbent injection port is an adsorbent for flue gas desulfurization. The dry desulfurization reaction device at least solves the problems of large volume, high pressure in the tower, low applicability and the like of the traditional desulfurization device at present.
Owner:BEIJING ZHTD ENVIRONMENTAL PROTECTION TECH CO LTD
Method of recycling copper and cobalt from cobalt containing waste liquid of copper hydrometallurgy
InactiveCN109266837AReduce processingReduce human inputProcess efficiency improvementSolid particleHydrometallurgy
The invention provides a method of recycling copper and cobalt from cobalt containing waste liquid of copper hydrometallurgy. The method comprises the following steps that impurity removal treatment is conducted on the cobalt containing waste liquid to remove impurities in the waste liquid, wherein the impurities comprise one or more of solid particle matter, suspended matter and oil matter; the impurity-removed cobalt containing waste liquid is concentrated and separated through a nanofiltration device, and thus a concentrated solution with the concentration increased and dialysate with the concentration decreased are obtained; copper chemical extraction treatment is conducted on the concentrated solution to form a copper-enriched solution and cobalt containing raffinate; neutralization impurity removal treatment is conducted on the cobalt containing raffinate to at least partially remove other metal ions except the cobalt; and chemical precipitation treatment is conducted on the cobalt containing raffinate subjected to neutralization impurity removal to recycle the cobalt. The method of recycling the copper and the cobalt from the cobalt containing waste liquid of copper hydrometallurgy improves the cobalt recycle rate.
Owner:中色华鑫湿法冶炼有限公司
Calibration method for mixed-mode simulation
InactiveUS20070244686A1Improve simulation speedCircuit areaComputer aided designSpecial data processing applicationsDelayed timeMixed mode
A calibration method of a mixed mode simulation calibrates standard delay times in a standard delay format and includes obtaining a digital output circuit from a digital circuit, obtaining an analog output circuit from an analog circuit, performing a simulation on the digital output circuit connected to the analog output circuit to obtain an ideal output, obtaining a first delay time according to the standard delay times of the digital output circuit, performing a calibrative analog-to-digital mixed mode simulation using the first delay time to obtain an analog-to-digital mixed output, comparing the ideal output and the analog-to-digital mixed output to calibrate the first delay time, and calibrating the standard delay times of the digital output circuit according to the calibrated first delay time.
Owner:IND TECH RES INST
Aeration system of MBR (Membrane Bio-Reactor) membrane module and control method of aeration system
ActiveCN103936138AReduce energy consumptionReduce aerationSustainable biological treatmentBiological water/sewage treatmentMembrane foulingPollution
Owner:POWERCHINA ZHONGNAN ENG +1
Method for breeding distinguished germ plasm of high-grade triticale rich in chrome
InactiveCN101049083ASmall selectionNarrow genetic backgroundPlant phenotype modificationPlant genotype modificationTriticaleTriticeae
A method for culturing the specific germplasm of high-quality Cr-enriched black wheat 'Jizi 439' includes such steps as hybridizing between Australian black wheat 14928 as female parent and 95-5031 as male parent, hybridizing between the hybrid F1 as female parent and tetraploid hard-grain wheat 190268 as male parent, rescue of F0 embryo, indoor passage, choosing new line Ai-8 from F3 generation, hybridizing between said Ai-8 and Luozhen 1, anther culture of the hybrid F1 generation, treating the calli by slow radiation, and transplanting the regenerated plants in field.
Owner:河北省农林科学院粮油作物研究所
Transport unit and set for securing cargo items
A transport unit is provided for cylindrical cargo items supported on a support surface and arranged in parallel in at least two layers. The center axes of cargo items are arranged on top of one another and extend essentially in the same vertical plane. At least one tension device extends between two layers. The tension device extends from an outside edge of a cargo item to an outside edge of an opposing cargo item in the layer. At least two stop elements are positioned on respective ends of the tension device. The stop elements are formed for engaging the cargo items and at least one of the stop elements being adjustably positionable on one end of the tension device. The stop elements being connectable by the tension device in a force transferring manner relative to the cargo items.
Owner:SONOCO DEV INC
Belt conveyor can be loaded with power isolation flexible start speed regulating device
ActiveCN103343805BTo achieve the purpose of energy savingSmall selectionConveyorsFluid gearingsEngineeringMotor power
A flexible start speed adjusting device capable of realizing belt-type conveyor on-load power isolation overcomes the defects that in an existing belt-type conveyor multi-motor driving system, the working condition of non-load operation or light-load operation often occurs, and energy is wasted. The flexible start speed adjusting device is characterized in that brake mounting holes are machined in one side, provided with a pump wheel axle, of a box body, an electro-magnetic brake is installed through a brake bearing seat, and a driven gear which is matched with a driving gear is installed on a brake shaft of the electro-magnetic brake. The flexible start speed adjusting device has the advantages that the multi-motor driven belt-type conveyor on-load power isolation function is realized, the purpose of saving energy is achieved, the type selection range of the electro-magnetic brake is small, the technology realizing difficulty is low, an electromagnetic brake body is low in manufacturing cost, the purposes that torque impact of equipment during the motor power isolation process or the motor power reapplication process is reduced, and when a certain motor in the driving system of the bet-type conveyor fails, the motor can be turned off under the condition that loads allow and the normal work and operation of the belt-type conveyor are not influenced are realized, and the continuous operation capacity of the conveyor is improved.
Owner:沈阳中煤工程技术有限公司
Compressor and heat exchange system
InactiveCN105485983AWith compressed gasFunctionalCompressorVapor–liquid separatorProcess engineering
The invention relates to a compressor and a heat exchange system. The compressor comprises a compression part (1) and a housing (2), wherein the housing (2) at least partly surrounds the compression part (1); a gas-liquid separating chamber is formed between the compression part (1) and the housing (2); the gas-liquid separating chamber comprises a first chamber (A) and a second chamber (B); the first chamber (A) is used for receiving a gas-liquid mixture from an evaporator; the second chamber (B) is used for receiving gas evaporated out from the first chamber (A); and a gas suction opening (3) of the compression part (1) is communicated with the second chamber (B). The compressor can reduce volume thereof, so that space usage is reduced; moreover, space usage of the compressor is reduced, so that a pipeline design of the heat exchange system is more convenient; the type selection of the gas-liquid separator is cancelled; besides, the housing partly surrounds the compression part, so that noises generated when the compressor works can be reduced.
Owner:GREE ELECTRIC APPLIANCES INC
Method for controlling nonvolatile memory device
InactiveUS7460405B2Reduce leakage currentImprove accuracySolid-state devicesRead-only memoriesMemory cellImpurity diffusion
Data is written to a nonvolatile memory device having a memory region of four bits or larger in one memory cell sandwiched by a source and a drain with an improved accuracy. The nonvolatile memory device 100 includes four control gates 114 to 117 provided between a first and a second impurity-diffused regions 106a and 160b that are provided separately from the semiconductor substrate, and a memory cell including memory regions 106a to 106d that are counterpart of the control gates. A method for controlling the nonvolatile memory device 100 includes classifying the four control gates 114 to 100 into two groups of right and left sides, and then, applying a lower voltage to an impurity-diffused region that is further from a target memory region for injecting an electron and applying a higher voltage to an impurity-diffused region that is closer the target memory region, and moreover applying a higher voltage, the higher voltage being higher than voltages applied to other control gates.
Owner:RENESAS ELECTRONICS CORP
Novel air compression station system
PendingCN104405622AOutstanding and Beneficial Technical EffectsReduce ambient temperaturePositive displacement pump componentsPositive-displacement liquid enginesAir compressionVapor–liquid separator
The invention belongs to the technical field of air compression, in particular to a novel air compression station system. The novel air compression station system comprises an air compressor for sucking and compressing air in surrounding environment and outwards outputting high-pressure air, an air-liquid separator mounted on an air outlet pipeline of the air compressor and used for separating condensate, oil and dust in the high-pressure air, an external aftercooling device used for primarily cooling the high-pressure air output by the air compressor and further removing steam components in the compressed air, an air storage tank used for temporarily storing the high-pressure air, a filter used for further filtering the high-pressure air and further removing the oil and the dust in the compressed air, and a cold dryer used for secondarily cooling the high-pressure air and further removing the steam components in the compressed air. The air temperature in each link of the novel air compression station system is reduced; the whole energy consumption is reduced; the service life is prolonged; and the quality of the provided compressed air is higher.
Owner:JIAXING QILE AIR COMPRESSOR
Enhancing the coding of video by post multi-modal coding
InactiveUS20090067494A1Quality improvementOvercomes shortcomingColor television with pulse code modulationColor television with bandwidth reductionVideo encodingComputer graphics (images)
Post multi-modal coding overcomes the shortcomings of video encoders which fail to meet an expected quality standard while encoding some portions of a video. The deficient encoding is typically due to the type of video content or the encoding technique. A method to improve the quality of the deficient portions, identifies macroblocks that are encoded at a deficient quality. Then, the identified macroblocks are encoded with another suitable encoding technique so that the desired quality is met. The improved macroblocks are then inserted into the original bit-stream, replacing the lower quality sections.
Owner:SONY CORP +1
Gate dielectrics of different thickness in PMOS and NMOS transistors
ActiveUS7994037B2Improve hot carrier injection effectIncrease flexibilityTransistorSemiconductor/solid-state device manufacturingGate dielectricEngineering
By providing a gate dielectric material of increased thickness for P-channel transistors compared to N-channel transistors, degradation mechanisms, such as negative bias threshold voltage instability, hot carrier injection and the like, may be reduced. Due to the enhanced reliability of the P-channel transistors, overall production yield for a specified quality category may be increased, due to the possibility of selecting narrower guard bands for the semiconductor device under consideration.
Owner:ADVANCED MICRO DEVICES INC
Method for synthesizing penicillin G sulfoxide by using continuous flow reactor
ActiveCN111233892AAvoid security issuesEliminate the risk of contaminationOrganic chemistryChemical/physical/physico-chemical processesAcetic acidPenicillin G sulfoxide
The invention provides a method for synthesizing penicillin G sulfoxide by using a continuous flow reactor, and the method comprises the following steps: (1) providing the continuous flow reactor which comprises a peroxidation reaction system and an oxidation reaction system; (2) respectively putting hydrogen peroxide and glacial acetic acid into a first containing bottle and a second containing bottle in the peroxidation reaction system, and enabling the hydrogen peroxide to be in contact with the glacial acetic acid so as to obtain peracetic acid; and (3) enabling the peracetic acid to enterthe oxidation reaction system through a pre-cooling module, and contacting the peracetic acid with a penicillin G potassium salt aqueous solution so as to obtain the penicillin G sulfoxide and a penicillin G sulfoxide aqueous solution. The method can be used for effectively synthesizing the penicillin G sulfoxide, and in the whole process of the method, reaction materials are easy to obtain, treatment after reaction is simple, industrial three wastes are easy to treat, the yield of a target product is high, and the method is very suitable for industrial production.
Owner:江苏悦新药业有限公司
Multichannel TDI imaging method based on area array detector and readable storage medium
ActiveCN112653855ALower purchase costReduce development costsTelevision system detailsColor television detailsEngineeringImaging Feature
The invention provides a multichannel TDI imaging method based on an area array detector. The area array detector comprises a full spectrum window and at least one target spectrum window. The imaging method comprises the following steps: setting the initial row position and the row number of each spectrum window on the area array detector according to the required integration level; calculating the image plane line frequency, and adjusting the imaging frame frequency of the area array detector to be matched with the line frequency; controlling exposure imaging of the area array detector in an external triggering mode to obtain a continuous image sequence of each window; and accumulating the image sequences according to the corresponding pixels to obtain each spectral image. According to the method provided by the invention, a multi-channel TDI push-broom imaging function is realized on a single area array detector, a strict relationship is established between the integral series and the frame frequency and between the integral series and the image shift line frequency, and push-broom imaging parameters such as the integral series and the line frequency of each channel can be flexibly configured.
Owner:重庆开拓卫星科技有限公司
Adjustable die for transformer coil winding
The invention discloses an adjustable die for transformer coil winding. The adjustable die comprises a die body, and is characterized in that the die body comprises a winding sleeve composed of at least four die sections, and the inner side of each die section is connected with a hollow die shaft through a hinge; a die center shaft penetrates through the hollow die shaft; the die center shaft is composed of a middle section, a threaded section and a cube section, the threaded section and the cube section are arranged on the two sides of the die center shaft, the middle section is matched with the hollow die shaft, the cube section penetrates through the center of a second spoke disc, the threaded section penetrates through the center of a first spoke disc, the threaded section is sleeved with a shaft sleeve, and the shaft sleeve is in threaded connection with the threaded section; the shaft sleeve is provided with a limiting structure, the shaft sleeve end on one side of the limiting structure penetrates through the first spoke disc, and the first spoke disc is limited at the limiting structure. The adjustable die is high in universality, the variable diameter of the die body can be suitable for manufacturing of different types of coils, production cost is greatly reduced, and production efficiency is improved.
Owner:CHINT ELECTRIC
Open separation system
InactiveCN103521444ASolve wear and tearSolve the problem of pipe blockageGas current separationDispersed particle filtrationPulp and paper industryCoal
The invention discloses an open separation system. The open separation system comprises a separation machine and is characterized in that the lower end of the separation machine is communicated with a cinder bin, the upper end of the separation machine is communicated with a bag collector through an ash conveying pipe, the lower end of the bag collector is communicated with a fine ash bin, the separation machine is further communicated with a main fan through the ash conveying pipe and an ash-gas mixer, and the ash-gas mixer is communicated with a raw material bin through a discharging machine. The open separation system is mainly used for a coal ash separation system.
Owner:龚军
Realizing method and device of coal slime semi-concentrate flotation process
The invention relates to a realizing method and device of a coal slime semi-concentrate flotation process. The realizing method comprises the steps that coal slime in a coal preparation plant is divided into three parts to enter a concentrate machine, a slurry mixing barrel and a slurry mixing tank correspondingly; high-concentration ore slurry and low-concentration ore slurry are subjected to coarse mixing firstly and then subjected to fine mixing to be ore slurry with the concentration being 90-120 g / L; and the prepared ore slurry automatically flows into an ore slurry preprocessor to be pre-mineralized and then enters a flotation machine to be floated. The realizing device comprises the concentrate machine, an underflow pump, the slurry mixing barrel, electric adjusting valves, static pressure sensors, a trans-permutation pump, the slurry mixing tank, manual adjusting valves, a concentration meter, a flowmeter, the ore slurry preprocessor, the floatation machine and an intelligent controller processing and controlling a feedback signal, wherein the electric adjusting valves, the static pressure sensors and the concentration meter are connected with the intelligent controller through a wired mode. Precise, flexible and adjustable matching of the ore slurry with the high-concentration being 350-450 g / L and the ore slurry with the low-concentration being not more than 60 g / L is achieved, and it is guaranteed that the concentration of the floating ore slurry entering the ore slurry preprocessor is within the concentration range of 90 g / L-120 g / L all the time, and the concentration is relatively stable.
Owner:TIANJIN MEITENG TECH CO LTD
Jet and insert combined air pre-heater capable of realizing same inlet/outlet temperature difference of gas in heat exchange pipes
InactiveCN102252340AImprove heat transfer efficiencyImprove the overall heat transfer coefficientCombustion processHeat transfer modificationAir preheaterCold air
The invention discloses a jet and insert combined air pre-heater capable of realizing same inlet / outlet equal temperature difference of gas in heat exchange pipes. The combined air pre-heater comprises a bellows and a plurality of rows of heat exchange pipes, wherein the bellows is provided with a cold air inlet and a hot air outlet, one side of the bellows is provided with a flue gas inlet, and the other side of the bellows is provided with a flue gas outlet; the plurality of rows of heat exchange pipes are arranged in the bellows and divided into a jet area and an insert area, the jet area is arranged at one side close to the flue gas inlet, and the insert area is arranged at one side close to the flue gas outlet; and the cold air inlet sequentially passes through the jet area and the insert area and then is communicated with the hot air outlet. Through the jet and insert combined air pre-heater capable of realizing the same inlet / outlet equal temperature difference of gas in the heat exchange pipes, the pipe wall temperature difference among the heat exchange pipes can be reduced, and the air heated in the heat exchange pipes has the same inlet / outlet temperature difference andthe optimal comprehensive heat exchange effect.
Owner:杭州美宝炉窑工程有限公司 +1
Artificial on-ring mechanical valve for replacing bicuspid valve membrane
InactiveCN108451669AGood form and functionWiden your optionsAnnuloplasty ringsBicuspid valveVentriculus
Provided is an artificial on-ring mechanical valve for replacing a bicuspid valve membrane. The artificial on-ring mechanical valve is used for being implanted into the heart to replace the cardiac bicuspid valve membrane which is positioned on the junction of the left atrium and the left ventriculus and has a lesion. The artificial on-ring mechanical valve includes a valve stent, a pair of openable valve leaflets and a suturing ring, wherein the valve stent includes a tubular part matched with a bicuspid valve ring in the left ventriculus, the valve leaflets are installed on the valve stent,contained in the tubular part and used for controlling one-way circulation of blood, and the suturing ring is fixed to the tubular part and used for being sutured with the bicuspid valve ring. The tubular part is also provided with an inflow end opening part and an outflow end opening part for blood to flow from the left atrium into the left ventriculus, and the suturing ring is arranged on the outflow end opening part.
Owner:唐杨烽
Jet-flow air pre-heater with heat exchange tubes having same inlet and outlet temperature difference
InactiveCN102213441AReduce the temperatureBurn out preventionCombustion processIndirect carbon-dioxide mitigationAir preheaterCold air
The invention discloses a jet-flow air pre-heater with heat exchange tubes having the same inlet and outlet temperature difference. The air pre-heater comprises a wind box and a plurality of rows of heat exchange tubes, wherein a cold air inlet is arranged at the upper end of the wind box; a hot air outlet is arranged at the lower end of the wind box; a fume inlet is arranged on one side of the wind box; a fume outlet is arranged on the other side of the wind box; the plurality of rows of heat exchange tubes are uniformly arranged in the wind box and communicated with the cold air inlet and the hot air outlet; the heat exchange tubes consist of internal tubes and external tubes which are sleeved coaxially; and the internal tubes are jet-flow tubes in which a plurality of jet-flow holes are formed. The jet-flow air pre-heater with the heat exchange tubes having the same inlet and outlet temperature difference has the advantages that: the temperature difference between tube walls of the heat exchange tubes can be reduced; and air which is heated in each row of heat exchange tubes has the same inlet and outlet temperature difference and the jet-flow air pre-heater has an optimal comprehensive heat exchange effect.
Owner:杭州美宝炉窑工程有限公司 +1
A slime water half-condensation flotation process
A slime water condensation flotation process mainly includes the following steps: S1, one portion of floating pulp flows by gravity into a thickener, the other portion of the floating pulp flows by gravity into a slurry mixing device, and the proportion of the two parts is flexibly adjusted; S2, the floating pulp is completely clarified by quantificationally adding a flocculating agent to the thickener through a flocculating agent-adding device, and overflows are directly used as circulating water; S3, the pulp with the high concentration about 400g / L is sent into the slurry mixing device through an underflow pump and the pulp in the high concentration about 400g / L and the pulp with the low concentration about 40g / L in the slurry mixing device are intensely stirred by a blade wheel to be uniform to prepare the floating pulp with the concentration of 80-150 g / L; S4, the prepared pulp flows by gravity into a pulp preprocessor and flows by gravity into a flotation machine after the pre-mineralization is performed. In addition, a dispersant is quantificationally added into the slurry mixing device through a dispersant-adding device to eliminate the unfavorable influence of the flocculating agent on subsequent floatation links. The investment cost of a supplementary floatation system is reduced and the production cost of the consumption of floatation medicaments and the like is alsoreduced, and the stability of the slime floatation process index is guaranteed at the same time.
Owner:TIANJIN MEITENG TECH CO LTD
Method for controlling nonvolatile memory device
InactiveUS20070014155A1Reduce leakage currentImprove accuracySolid-state devicesRead-only memoriesLow voltageComputer science
Data is written to a nonvolatile memory device having a memory region of four bits or larger in one memory cell sandwiched by a source and a drain with an improved accuracy. The nonvolatile memory device includes four control gates provided between a first and a second impurity-diffused regions that are provided separately from the semiconductor substrate, and a memory cell including memory regions that are counterpart of the control gates. A method for controlling the nonvolatile memory device includes classifying the four control gates into two groups of right and left sides, and then, applying a lower voltage to an impurity-diffused region that is further from a target memory region for injecting an electron and applying a higher voltage to an impurity-diffused region that is closer the target memory region, and applying a higher voltage, the higher voltage being higher than voltages applied to other control gates.
Owner:RENESAS ELECTRONICS CORP
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