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246results about How to "No overheating" patented technology
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Million - kilowatts class nuclear power station reactor main bolt production process
ActiveCN101169150AUniform tissueFully heatedNuclear energy generationScrewsNuclear engineeringNuclear power
The invention discloses a pile main bolt manufacturing technique of a million kilowatt grade nuclear power station. The manufacturing technique includes material-selecting, melting, heating, forging, cooling, after-forging heat treatment, defect-detecting, and forging capability heat treating. When selecting the material, the microelement content of the materials is controlled, the heat preserving duration in the intermediate temperature stage is prolonged, the heat raising and the heat preserving duration in the high temperature stage are reduced, the distortion volume in the course of the forging is controlled between 30 percent and 70 percent, the forging rate reaches 5 above; after-forging heat treatment, ultrasonic defect detecting, and forging capacity heat treating are conducted when the forging is finished. The main bolt produced according to the manufacturing technique of the invention can improve the impact value under the circumstance that the intensity keeps unchanged, theproduct can meet the RCC-M standard requirements completely, and the reliability and the safety of the pile pressure container using the main bolt of the million kilowatt grade nuclear power station can be ensured.
Owner:GUIZHOU AEROSPACE XINLI CASTINGSAND FORGINGS
Regeneration method of molecular sieve catalyst
ActiveCN102836743AEfficient regenerationNo overheatingMolecular sieve catalystsMolecular sieveCarbon deposit
The invention provides a regeneration method of a molecular sieve catalyst, comprising the following steps: roasting a molecular sieve catalyst to be regenerated at 300-750 DEG C to decomposing the carbon deposit in the molecular sieve catalyst to be regenerated into CO2, wherein the roasting step is characterized in that: in the presence of oxygen-containing gas, the molecular sieve catalyst to be regenerated is subject to roasting of multiple stages at a constant temperature, the roasting of multiple stages comprises a first roasting stage and roasting stages after the first roasting stage, the roasting temperature of any one roasting stage after the first roasting stage is 5-70 DEG C higher than that of the adjacent former roasting stage, and the roasting time of each roasting stage is long enough to generate no CO2 when roasting is conducted under the roasting condition of the roasting stage. According to the invention, the performance of the regenerated molecular sieve catalyst is recovered and even better than the performance of a fresh catalyst, thus good regeneration effect can be achieved by using the method disclosed herein.
Owner:CHINA PETROLEUM & CHEM CORP +1
Methanation fluidized bed reactor
ActiveCN104001457AGuaranteed uptimeReduce consumptionGaseous fuelsChemical/physical processesFluidized bedMethanation
The invention provides a methanation fluidized bed reactor which is equipment for performing reaction on CO and H2 to generate methane and water and performing reaction on CO2 and H2 to generate methane and water at a certain constant low temperature. The methanation fluidized bed reactor comprises a cylindrical shell and inner parts, wherein a primary gas distributor and a secondary gas distributor are arranged at the bottom, and a catalyst is filled to form a catalyst bed; a heat exchange device consisting of a plurality of groups of heat exchange tubes is arranged in the catalyst bed; the lower ends of the heat exchange tubes in each group are communicated with a water inlet header pipe which is communicated with a water outlet of a steam drum, and the upper ends of the heat exchange tubes in each group are communicated with a steam outlet header pipe which is communicated with a steam inlet of the steam drum. According to the methanation fluidized bed reactor, heat continuously released during methanation reaction can be timely transferred through another medium, and the reaction can be performed at the constant low temperature.
Owner:尹明大
Carbon fiber composite for pantograph pan slider and preparation method thereof
The invention discloses a carbon fiber composite for a pantograph pan slider and a preparation method thereof. The carbon fiber composite is prepared from carbon fiber cloth, thermosetting modified phenolic resin, graphite powder, chopped carbon fiber, copper fiber, a KH550 coupling agent and nitrile rubber. The preparation method comprises the steps of immersing, mixing, mould pressing, dipping and curing. The carbon fiber composite has the beneficial effects that with the carbon fiber cloth, phenolic resin, nitrile rubber and graphite powder as a continuous phase, and with the chopped carbonfiber and copper fiber as an reinforcement phase, the composite is free of a copper wire mesh, interlayer structures in the composite are reduced, and the probability of interlayer cracking is lowered when the pantograph slider is subjected to friction; with the KH550 coupling agent, organic matter and carbon fibers in a system can be coupled to form a physical structure, so that the strength andthe stability in friction of the carbon fiber composite are enhanced; the composite is made from few components, the preparation process is simple, the cost is low, and thus the composite is applicable to industrial production.
Owner:QINGDAO UNIV
Method for preparing vinyl chloride by circulating fluidized bed reactor and device thereof
InactiveCN101121635AExtend your lifeReduce dosagePreparation by halogen halide additionFluidized bedEngineering
The present invention discloses a method to prepare chloroethylene by a circulated flow bed reaction device and the corresponding device, which belongs to the chemical technical process and device technology region. Two or more than two gas distributing devices are arranged inside of the flow bed, which divide the flow bed into two or more than two catalyzer zones; a fan is arranged outside of the flow bed, which can make part of products circulate after being pressured and then enters the flow bed again; the design can make the catalyzer zones in a better flow state so as to guarantee the much better heat-exchange effect between the bed level and the heat-exchange interface; besides, the stability of the device and the elasticity of the operation can be enhanced; the low-temperature catalyzer zone in the upper level can decrease the temperature for the reaction gas, and then extract the included hydrargyrum so as to decrease the environment pollution because of the losing of hydrargyrum; the catalyzer in each catalyzer zone is circulated termly so as to use the catalyzing function for hydrargyrum enough. The flow bed reaction device and technology in the present invention has the advantages of high transfer ratio of ethyne, good diathermancy, even temperature of the bed level, good controlled ability and elastic operation and so on.
Owner:XINJIANG TIANYE GRP +1
Co-precipitation synthesis method for Na2/3Ni1/3Mn2/3O2 as electrode material and preparation method of Na2/3Ni1/3Mn2/3O2 electrode
InactiveCN103922427ALarge specific heat capacityPrevent battery explosionCell electrodesNickel compoundsIonMuffle furnace
The invention provides a co-precipitation synthesis method for Na2 / 3Ni1 / 3Mn2 / 3O2 as an electrode material and a preparation method of a Na2 / 3Ni1 / 3Mn2 / 3O2 electrode. The co-precipitation synthesis method comprises the steps of (1) mixing a nickel source compound solution and a manganese source compound solution, then, violently stirring to prepare a mixed solution with the nickel-to-manganese molar ratio of (0.8-1.5):1, and meanwhile, adding a complexing agent to complex until the pH value of the solution is up to 7.5-8.5; (2) adding a precipitant for precipitating to obtain a precipitate, carrying out suction filtration on the obtained precipitate, washing and drying; (3) carrying out ball milling on the dried product and a sodium source compound with a stoichiometric ratio, and mixing for 3-10h; (4) placing the ball-milled mixture into a muffle furnace to pretreat and calcine at high temperature to obtain a final product, namely, Na2 / 3Ni1 / 3Mn2 / 3O2. Proved by an electrochemical test, the material provided by the invention has the specific discharge capacities of 195mAh / g (0.01C), 153mAh / g (0.05C), 84mAh / g (0.10C), 53mAh / g (0.20C) and 49mAh / g (0.50C) in a rate performance test. The co-precipitation synthesis method is wide in raw material source, easy to prepare, low in aqueous sodium ion electrolyte cost and friendly to environment.
Owner:三亚哈尔滨工程大学南海创新发展基地
Exhaust gas recirculation cooling element for an internal combustion engine
ActiveCN101896787AImprove efficiencyNo overheatingInternal combustion piston enginesRecuperative heat exchangersExhaust fumesEngineering
The invention relates to an exhaust gas recirculation cooling element (1) comprising a heat exchanger (2) having several heat exchange units (11, 12, 13) that are introduced between the inflow region (3) and the outflow region (7) of the exhaust gas (AG). Said units comprise cooling tubes with cooling ribs. The heat exchanger (2) is surrounded by a housing (16), the lateral walls thereof (19) being arranged at a distance in relation to the perforated lateral walls (10). Guide channels (28) are arranged between the closed lateral walls (9) of the heat exchanger (2) and the adjacent lateral walls (20) of the housing (16), said guide channels extending in a diagonal manner and being provided to direct the coolant (KM) from a coolant inlet to the coolant outflow through the individual heat exchange units (11, 12, 13).
Owner:GEA机械冷却技术有限公司
Refrigerator condensation-preventing and heating control method and application thereof
ActiveCN103968634AReduce energy consumptionNo condensationLighting and heating apparatusDefrostingEngineeringRefrigerated temperature
The invention discloses a refrigerator condensation-preventing and heating control method and an application thereof. The refrigerator condensation-preventing and heating control method is characterized in that a condensation-preventing heater is arranged on the inner surface of the part needing condensation prevention of a refrigerator, and the condensation-preventing heater circularly works in a mode of performing heating for t2 seconds and not performing heating for t1 seconds to achieve the condensation-preventing function. By means of the refrigerator condensation-preventing and heating control method, the working mode of automatically adjusting the heater can be achieved under different environment temperatures and different using conditions, condensation cannot be produced on the condensation-preventing part, overheating is avoided, the using energy consumption of the refrigerator is effectively reduced, and the reliability and stability of the condensation-preventing function are improved.
Owner:CHANGHONG MEILING CO LTD
High temperature testing machine for gears
InactiveCN103759938AThermal hasThermal noneMachine gearing/transmission testingAviationReduction drive
A high temperature testing machine for gears comprises a gear transmission case used for testing the fatigue life of the gears, wherein the gears to be tested are installed in the gear transmission case, the gear transmission case is connected with a temperature control system, the temperature control system comprises a heating device and a control module of a temperature monitor device, the heating device is connected with the gear transmission case through a pipeline, the heating device conveys lubricating oil into the gear transmission case through the pipeline to heat and lubricate the gears to be tested in an oil bath mode so that the working condition of gears inside an aviation speed reducer can be simulated, and the lubricating oil is heated to reach the set temperature. The temperature monitor device is installed on the heating device to monitor the temperature of the lubricating oil in real time, temperature information is fed back to the control module, and then the heating temperature can be monitored and controlled. Long-time simulation testing under the high temperature can be carried out on the gears, the testing temperature is high, working time is long, the testing environment is more approximate to the actual working condition of the aviation gears, and testing results are more effective and credible.
Owner:BEIJING RES INST OF AUTOMATION FOR MACHINERY IND
Method for circularly and rapidly pre-vulcanizing sulfur tolerant shift catalyst and carrying out segmental pre-vulcanizing by utilizing sulfur tolerant shift catalyst
ActiveCN103657741AThe vulcanization method is simpleHeating up fastCatalyst activation/preparationSocial benefitsVulcanization
The invention relates to a segmental pre-vulcanizing method of a sulfur tolerant shift catalyst in a multi-segment conversion process, particularly relates to a method for rapidly pre-vulcanizing cobalt-molybdenum-series sulfur tolerant shift catalysts and belongs to the technical field of pretreatment of the sulfur tolerant shift catalyst. According to the method, aiming at the situations of the temperature raising and the slow vulcanizing speed caused due to insufficient vulcanizing conditions, a segmental vulcanizing method is utilized, namely the rapid pre-vulcanizing of a first-segment furnace is reinforced to raise the temperature of a subsequent second-segment furnace; first-segment vulcanizing conditions are reinforced to guarantee the vulcanization of the catalyst so as to realize the rapid, efficient and complete vulcanization, meanwhile, the temperature of a subsequent second-segment bed is raised by high-temperature vulcanized gas in a rapid vulcanizing process, and the subsequent working segments are similarly processed, so that the vulcanizing and temperature raising time is greatly shortened, and the vulcanizing cost is lowered; by utilizing a circular vulcanizing manner, the emptying quantity is few, the overtemperature is avoided, the vulcanizing process is convenient and safe, the pollution is light, and the method has remarkable economic and social benefits.
Owner:CHINA PETROLEUM & CHEM CORP
Dendrobium officinale healthcare product with auxiliary blood glucose reducing function and preparation method thereof
ActiveCN104784505APromote absorptionImprove playbackMetabolism disorderFood preparationMedicinal herbsSide effect
The invention discloses a dendrobium officinale healthcare product with an auxiliary blood glucose reducing function. The dendrobium officinale healthcare product comprises the following raw materials in parts by weight: 35 to 45 parts of fresh dendrobium officinale bars, 1 to 2 parts of American ginseng, 2 to 4 parts of the root of kudzu vine, 2 to 4 parts of radix trichosanthis and 1 to 2 parts of fructus schizandrae. A preparation method for the dendrobium officinale healthcare product with the auxiliary blood glucose reducing function comprises the following steps: weighing the raw materials; processing the fresh dendrobium officinale bars; processing the American ginseng; performing alcohol extracting; performing water extracting; drying; batching. According to the dendrobium officinale healthcare product with the auxiliary blood glucose reducing function disclosed by the invention, the raw material formula is from clinical practice under the guidance of the theory of traditional Chinese medicine; the herbal medicines in a prescription are concise and are high in pertinency; the medicines in a raw material formula can nourish yin, benefit qi, clear heat and promote the secretion of saliva or body fluid; the active ingredients of the medicines are easy to absorb and are favorable to play efficacy; the medicinal materials in the raw material formula have the homology of medicine and food, and have no toxic or side effect.
Owner:广西弄峰山铁皮石斛科技有限公司
Forced cooling device based on latent heat exchanging
InactiveCN104677158ASolve the cooling problemReduce energy consumptionIndirect heat exchangersEngineeringHigh pressure
A forced cooling device based on latent heat exchanging comprises a high-temperature evaporator, a low-temperature condenser, a throttle, a delivery pump, a liquid trap, a safety valve, a stop valve, a temperature control system and a working medium filling device which are connected through high-pressure hoses. The phase change latent heat of working media is used to take away heat, and the forced cooling device is mainly used for solving the radiation problems of large-power electronic components. The delivery pump delivers the liquid working media in the liquid trap to the evaporator, the liquid working media absorb heat and is gasified, the gaseous working media flow into the condenser, is liquefied and release heat to the environment, and liquid working media converge into the liquid trap under gravity action. The temperature control system controls the rotation speed of the delivery pump through the temperature feedback at a cold end and a hot end, and accordingly the heat exchanging power of a working medium flow control device. The safe and nontoxic R134a is used as the working media, and equipment and the environment cannot be damaged even leakage occurs.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Heat absorption tube for solar energy
InactiveCN101893340AExpansion Compensation GuaranteeDoes not compromise vacuum-tight connectionsSolar heating energySolar heat devicesEngineeringSolar heat
Owner:SCHOTT AG
Fan drive
ActiveUS20100163362A1Improve cooling effectNo overheatingCoolant flow controlFluid couplingsDrive shaftMotorized vehicle
A fan drive (1) includes a drive shaft (6), a fluid friction clutch (2) as well as a fan (3). The fluid friction clutch (2) includes a drive disc (5) as well as a housing (4) having a front-end housing part (4a) and a rear-end housing part (4b). The housing (4) is journalled on a drive shaft (6) via at least one bearing (7). Air flows against the fluid friction clutch (2) and the fan (3) in flow direction (L). An air-conveying unit (13) is mounted in flow direction (L) behind the fluid friction clutch (2). The fan drive is especially for a motor vehicle.
Owner:MAHLE INT GMBH
Regional heat supply and household metering regulating and controlling station and regulating and controlling method thereof
InactiveCN102927619ANo overheatingGood energy saving effectLighting and heating apparatusSpace heating and ventilation detailsEngineeringOutdoor temperature
The invention discloses a regional heat supply and household metering regulating and controlling station and a regulating and controlling method thereof. According to the regulating and controlling station, a connection pipeline 1 is connected with an electric flow regulating valve 3, the electric flow regulating valve 3 and a heat metering part 4 are connected to a connection pipeline 2, a water inlet pipeline temperature sensor 5 is arranged on a water inlet pipeline of a heat supply loop; a water return pipeline temperature sensor 6 is arranged on a water return pipeline of the heat supply loop; the heat metering part 4 is connected with the water inlet pipeline temperature sensor 5 and the water return pipeline temperature sensor 6; and a control part 7 is connected with an indoor temperature sensor 8, an outdoor temperature sensor 9, an indoor personnel detector 10, the electric flow regulating valve 3, the heat metering part 4, the water inlet pipeline temperature sensor 5 and the water return pipeline temperature sensor 6. Compared with the prior art, the regulating and controlling station is energy-saving and high in comfort degree, has the characteristics of simple structure and long-term reliability, and can be widely popularized and used.
Owner:牟端
Phase-change energy-storage radiator
InactiveCN105588165ALarge energy storage capacityReduce volumeHeat storage plantsElectric heating systemThermodynamicsHeat flow
The invention relates to a phase-change energy-storage radiator, and belongs to the field of new type energy, energy conservation and environmental protection. The phase-change energy-storage radiator is used for storage and controlled releasing of heat energy in multiple grades. The phase-change energy-storage radiator comprises an outer heat preservation box and an energy-storage unit; a natural convection radiating runner is formed between the energy-storage unit and a heat preservation shell; and the natural convection radiating runner is controlled to be opened and closed, and therefore timing accumulated storage and releasing of the energy can be achieved. Heat insulation and energy storage can be completely achieved in the energy storage process of the phase-change energy-storage radiator, and meanwhile radiating can be controlled in the storage process. The device is large in energy-storage volume and small in size. According to a specially developed and allocated mixed chlorinated paraffin low-temperature phase-change energy-storage material, the energy-storage temperature scope is appropriate, the material is non-toxic and free of chemical changes, the energy-storage temperature scope and the heat release amount are not changed after repeated utilization, undercooling and overheating phenomena are avoided, and both the physical and chemical property and the reliability are excellent.
Owner:BAOTOU BOTE TECH
Shot blasting machine roller way with shot leakage preventing device
PendingCN107457710AReduce entrySimple structureFurnace typesAbrasive machine appurtenancesStructural engineeringMechanical engineering
The invention discloses a shot blasting machine roller way with a shot leakage preventing device. The shot blasting machine roller way comprises a roller way horizontally arranged in a shot blasting machine body; shaft heads at two ends of the roller way respectively penetrate through two side walls of the shot blasting machine body to extend out; the axis of the length direction of the roller way is overlapped with the axis of the shot blasting machine body; bearings respectively sleeve the shaft heads at two ends of the roller way; bearing bases sleeve the bearings; the bearings on two sides and the bearing bases are totally identical, and are symmetrically arranged; a leakage preventing cover is arranged on the side wall in the shot blasting machine body, and sleeves the roller way; an annular cavity is formed in the leakage preventing cover; a discharge port is formed below the leakage preventing cover; the roller way is provided with an air blowing blade in the corresponding position of the annular cavity; an annular baffle plate outwards extends to one side of the leakage preventing cover; the roller way is provided with a conical table in the corresponding position of the annular baffle plate; and when the conical table approaches the leakage preventing cover, the outer diameter is gradually increased.
Owner:江苏飞腾铸造机械有限公司
Soft starting hoisting gear for two stage planetary gear train transmission
InactiveCN101077760ANo overheatingReliable soft start performanceWinding mechanismsGear wheelGear train
The present invention provides the technological scheme of soft started winch with two stages of transmission planet gear train. The technological scheme includes one motor, one planet gear transmission mechanism, and one brake. It features the planet gear transmission mechanism including one first planet gear transmission mechanism and one second planet gear transmission mechanism; the successive connection of the motor output shaft, the first planet input shaft and the first planet central gear; the successive connection of the first planet carrier, the second planet input shaft and the second planet central gear; the second planet carrier connected to the output shaft; the successive meshing of the second planet casing ring gear, the transition gear and the braking gear; The braking shaft connected to the water cooled disc brake; and the coaxiality of the motor output shaft, the first planet input shaft, the second planet input shaft and the output shaft.
Owner:唐志明
Pumping equipment and distribution hydraulic system and heating method thereof
The invention provides a distribution hydraulic system of pumping equipment, which comprises a hydraulic pump, a change valve, a check valve, an accumulator and a pressure control assembly. The distribution hydraulic system comprises a working mode and a heating mode, wherein under the heating mode, the hydraulic pump can drive hydraulic oil to overflow through the pressure control assembly, so that hydraulic energy is converted into heat energy, and then the temperature of the hydraulic oil can be rised by the heat energy. The invention also provides the pumping equipment and a heating method thereof.
Owner:ZOOMLION HEAVY IND CO LTD
Spherical graphite with median diameter of 3 to 10 mu m and preparation method thereof
ActiveCN101850963AImprove securityImprove practicalityVortex flow apparatusGrain treatmentsGraphiteBattery capacity
The invention discloses a preparation method of spherical graphite with a median diameter of 3 to 10 mu m. A five-level powder refining machine set consisting of an air-flow vortex powder refining machine and a cyclone separator is sequentially connected with a fourteen-level nodulizing machine set consisting of an air-flow vortex nodulizing machine and a nodulizing classifier in series; the graphite material enters from the first powder refining machine set and then flows through the five powder refining machine sets and the fourteen nodulizing machine sets in turn and finally out of the last nodulizing machine set; and by refining and nodulizing the powder, the spherical graphite product is obtained. The spherical graphite product has a surface closed end part structure, is spherical, and has the specific surface area of 8.0 to 12 m<2> / g. The number of openings on the surface of the graphite powder is 6-65 per mu m. The sphericity of the product is high; the electrochemical performance is obviously improved; the battery capacity, the standby time and the service life are effectively increased; moreover, the preparation method can improve the yield by over 90 percent, lower the cost by 50 percent, save the power consumption by 60 percent and realize the dust recovery rate up to 100%.
Owner:LUOYANG GUANQI INDAL & TRADE
Charging system and charging circuit for batteries, as well as method for controlling charging of the battery
ActiveCN101764418AImprove charging efficiencyNo overheatingBatteries circuit arrangementsElectric powerBattery chargeCharge current
The invention discloses a charging system and a charging circuit for batteries, as well as a method for controlling charging of the battery. The battery charging system comprises a charging switch for conducting charging current to the battery, a first and a second amplifiers coupled to the charging switch. The first amplifier is used for regulating the charging current according to the power consumption of the charging switch. The second amplifier is used for regulating the charging current according to the voltage of the battery. When the voltage of the battery is less than the predetermined voltage threshold, the charging current through the charging switch is regulated by the first amplifier, so that the power consumption of the charging switch is maintained constant. When the voltageof the battery is larger than the predetermined voltage threshold, the charging current through the charging switch is regulated by the second amplifier, so that the voltage of the battery is maintained constant. Compared with the prior art, during the entire charging process, overheating phenomenon will not occur in the battery charging system even if the difference between the charging power voltage and the battery voltage is relatively large, so that the charging efficiency is improved.
Owner:AOTU ELECTRONICS WUHAN
Homogenizing heat treatment technology for eliminating Al-Cu-Mg-Si-Mn alloy casting crystal phase
The invention provides a homogenizing heat treatment technology for eliminating the Al-Cu-Mg-Si-Mn alloy casting crystal phase. The homogenization technology comprises the steps that an Al-Cu-Mg-Si-Mn alloy ingot is placed into a furnace, is heated to 470-480 DEG C at the speed of 15-20 DEG C / min, is subjected to heat preservation for 8-12h, then is subjected to furnace cooling to 250-300 DEG C, and is subjected to air cooling to the room temperature; then the ingot is placed into a heat preservation furnace with the temperature being 510-520 DEG C and subjected to heat preservation for 18-24h; and finally, the ingot is subjected to air cooling to the room temperature. According to the homogenizing heat treatment technology, the homogenization problem that Al-Cu-Mg series alloy ingots containing a high amount of Si, Fe and Mn are high in melting point, so that a complex second phase is difficult to eliminate is solved, the technology is simple and convenient to operate, the feasible homogenizing heat treatment scheme is provided for the various Al-Cu-Mg series alloy ingots containing a high amount of Si, Fe and Mn, and industrial production is facilitated.
Owner:CENT SOUTH UNIV
Cold-charge heating method of bearing steel continuous casting billet
ActiveCN104313298AInhomogeneity qualifiedNo overheatingFurnace typesHeat treatment furnacesCarbideContinuous casting
The invention discloses a cold-charge heating method of a bearing steel continuous casting billet, which comprises a preheating section I, a preheating section II, a heating section I, a heating section II and a soaking section. On the premise of not generating overburning and surface crack and ensuring the carbide uniformity to reach the standard, the method satisfies the cold-charge heating and rolling production of the bearing steel continuous casting billet.
Owner:SHANDONG IRON & STEEL CO LTD
Diesel vehicle DPF active regeneration temperature control method
ActiveCN109083720AFast regenerationImprove regeneration efficiencyInternal combustion piston enginesExhaust apparatusTemperature controlProcess engineering
The invention relates to a diesel vehicle DPF active regeneration temperature control method. The diesel vehicle DPF active regeneration temperature control method successively includes the followingsteps that (1) the DOC inlet temperature T1 and the DPF inlet temperature T2<original> before fuel injection are red, the DPF inlet regeneration target temperature T3 is selected, the initial fuel-injection quantity q of an HC injection unit (9) is calculated or selected, and fuel is injected into the inlet of a DOC (1) according to the initial fuel-injection quantity q; (2) the DPF inlet temperature T2<k> is red again, and the next fuel-injection quantity q<k+1> of the HC injection unit (9) is redetermined; (3) the fuel-injection quantity injected into the inlet of the DOC (1) is adjusted tothe next fuel-injection quantity q<k+1> determined in the step (2); (4) the DPF inlet temperature T2<k> is read again, and the next fuel-injection quantity q<k+1> of the HC injection unit (9) is redetermined; and (5) the step (4) is repeated. According to the diesel vehicle DPF active regeneration temperature control method, rapid regeneration of the DPF is achieved with low fuel consumption and good regeneration temperature, and the regeneration efficiency of the DPF is high.
Owner:DONGFENG COMML VEHICLE CO LTD
Boundary layer control and mainstream perturbation coordinated integrated enhanced heat transfer method and system
InactiveCN102872686AImprove separation efficiencyImprove temperature consistencyGas treatmentDispersed particle separationEnhanced heat transferEngineering
Owner:WENLING ANNENG ENERGY EFFICENCY TECH
Air conditioning system and control device and method of air conditioning system
InactiveCN107449078AImprove cooling effectImprove reliabilityMechanical apparatusSpace heating and ventilation safety systemsEngineeringTemperature difference
The invention discloses an air conditioning system and a control device and a method of the air conditioning system. A first port of an indoor heat exchanger is connected with a compressor through a third pipeline; a second port of the indoor heat exchanger is connected with an outdoor heat exchanger through a second pipeline; N branch circuits connected in parallel are connected with the second pipeline in a series or parallel manner; N valve modules are correspondingly arranged on the N branch circuits; each valve module is used for controlling opening or closing of the corresponding branch circuit; a first temperature detecting unit is used for detecting the refrigerant temperature of the indoor heat exchanger; a second temperature detecting unit is used for detecting the air suction temperature of the compressor; and a control unit is used for obtaining the temperature difference between the air suction temperature of the compressor and the refrigerant temperature of the indoor heat exchanger and controlling opening or closing of the N valve modules according to the temperature difference. The refrigerant flow of the air conditioning system can be controlled through controlling opening or closing of the valve modules, so that no overheating phenomenon of a refrigerant fed in the indoor heat exchanger is guaranteed, and the refrigeration performance of an air conditioner is improved.
Owner:WUHAN REFRIGERATION EQUIP OF MIDEA GROUP +1
Trigger and generator voltage regulator
ActiveCN105577053AExtend your lifeEnsuring Safety and ReliabilityAmplifier detailsGenerator control by field variationOvervoltageVoltage regulation
The invention provides a trigger and a generator voltage regulator. The trigger comprises a comparison unit, which is connected with a power supply end, ground and a switch unit and is used for outputting a first voltage to the switch unit when the voltage at an in-phase input end is larger than that of an inverse-phase input end, and outputting a second voltage to the switch unit when the voltage at the in-phase input end is smaller than that of the inverse-phase input end; the switch unit, which is connected with the ground or the positive pole of a power supply and a trigger control end, and is used for enabling the control end to be conducted with the ground under the control of the comparison unit, or enabling the control end to the conducted with the positive pole of the power supply; and a feedback unit, which is connected with the control end and the inverse-phase input end of the comparison unit, and is used for positively feeding back the signal of the control end to the inverse-phase input end of the comparison unit. When the trigger is applied to the voltage regulator, integration of multiple functions of excitation fixed-frequency triggering, immediate overvoltage cutting off and over-current protection is realized; and a sampling circuit does not need a capacitor, and synchronous detection and overvoltage excitation cut off are realized, and overtime overvoltage excitation does not occur, so that the effects of stable voltage, accurate adjustment and being safe and reliable are achieved, and the service life of the regulator and the service life of a generator are prolonged.
Owner:西安丝路知星科技服务有限公司
Motor positive/negative rotation circuit for eco-house
InactiveCN101976993AHigh degree of intelligenceGuarantee practical safety and reliabilityDc motor startersElectrical resistance and conductanceEngineering
Owner:SUZHOU HEXINMEI ELECTRONICS SCI & TECH CO LTD
Band-gap reference circuit with second-order curvature compensation
InactiveCN114840049AReduce areaSmall temperature driftElectric variable regulationIntegrated circuitCurrent generation
The invention discloses a band-gap reference circuit with second-order curvature compensation, which counteracts a second-order item in VBE through approximate voltage replication, so that the temperature drift of band-gap voltage is lower. The conversion circuit comprises a starting circuit module, a PTAT current generation module, a CTAT current generation module, an output module and a thermal turn-off module. The starting circuit module helps a circuit to be separated from a degenerate working point, and normal work of other modules is guaranteed; the PTAT current generation module and the CTAT current generation module generate positive temperature coefficient current and negative temperature coefficient current respectively and gather the positive temperature coefficient current and the negative temperature coefficient current to the output module, and meanwhile the CTAT current generation module counteracts a second-order term in VBE through approximate voltage copy. The output module generates different band-gap reference voltages by using resistance voltage division to supply power to the chip; the thermal turn-off module provides a hysteresis effect and protects the chip from an over-temperature phenomenon. The invention has the advantages of simple structure, low temperature drift, no operational amplifier and the like, and can be used for analog integrated circuits.
Owner:西安水木芯邦半导体设计有限公司
Bearing intelligent precision forging automatic production line
InactiveCN111069517AThere is no poor quality inside and outsideLittle difference in internal and external qualityShaping toolsPerforating toolsProduction linePunching
The invention relates to the technical field of bearing production equipment, in particular to a bearing intelligent precision forging automatic production line which comprises a feeding mechanism, anupsetting mechanism, a punching flattening mechanism, a continuous reaming mechanism, a finishing diameter mechanism and a discharging mechanism, wherein the feeding mechanism comprises a feeding component and a pushing component; the upsetting mechanism comprises an overturning component and an upsetting component; the overturning component is arranged at the tail end of the pushing component; the punching flattening mechanism is arranged by the side of the upsetting component; the continuous reaming mechanism comprises a conveying component and a continuous reaming component; the conveyingcomponent is arranged by the side of the punching flattening mechanism; the continuous reaming component is arranged at the tail end of the conveying component; the finishing diameter mechanism is arranged at the tail end of the continuous reaming component; and the discharging mechanism is arranged at the tail end of the finishing diameter mechanism. The bearing intelligent precision forging automatic production line can realize automatic processing of bearing precision forging, lowers the labor intensity, shortens the blank transferring distance, reduces the temperature differences of different processing parts of the blank, and improves the production efficiency and the bearing precision.
Owner:浙江赛赛轴承有限公司
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