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Device for controlling temperature and humidity of large-scale electrostatic spinning environment
ActiveCN105588203AContinuous regulationRegulation and stabilityDucting arrangementsMechanical apparatusFiberElectrospinning
The invention relates to a device for controlling a temperature and a humidity of a large-scale electrostatic spinning environment. The device comprises a base, an air conditioning device, a heater, an equipment box shell and a dehumidifier, wherein the equipment box shell is mounted on the base; a working chamber is formed in the equipment box shell; a backflow air port of the dehumidifier is connected with one end of a backflow air way of the dehumidifier; the other end of the flowback air way of the dehumidifier is mounted at the lower part of the side surface of the equipment box shell, and is connected with the working chamber; a regenerated air port of the dehumidifier is connected with one end of a regenerated air way of the dehumidifier; the other end of the regenerated air way of the dehumidifier is mounted at the upper part of the side surface of the equipment box shell, and is connected with the working chamber; the air conditioning device is mounted at the back end in the base; an air inlet of the air conditioning device is connected with one end of a flowback air way of an air conditioner; and the other end of the flowback air way of the air conditioner is mounted rightly above the equipment box shell, and is connected with the working chamber. The device solves the adjusting difficulty of continuous electrostatic spinning temperature and humidity, and can produce nanometer fibers in large scale and in volume under the condition of continuous liquid supply.
Owner:DONGHUA UNIV
Method for regulating and controlling stable flow of liquid nitrogen jet flow state
InactiveCN107388032ARegulation and stabilityIncrease profitVessel mounting detailsContainer filling methodsJet flowHeat losses
The invention relates to a method for regulating and controlling the stable flow of the liquid nitrogen jet flow state and belongs to the field of cryogenic engineering. According to regulation of the stable flow of the liquid nitrogen jet flow state through the method, a heat insulation pipeline is utilized to reduce heat leakage, the two-phase flow gas mass fraction is regulated and controlled within a certain range, the gasification ratio of liquid nitrogen in the delivering process is decreased, and the stable output result in the allowable range is obtained. The liquid nitrogen delivering flow is monitored in real time, and liquid nitrogen flow regulation and stable output are achieved through a PID regulating and control method. According to the method, cryogenic fluids in cryogenic medium processing are effectively stabilized, regulated and controlled, the dry degree of the liquid nitrogen in pipeline delivering is decreased, and the utilization rate of the fluids during liquid nitrogen ultra-low temperature cutting is increased. A liquid nitrogen delivering device is compact in structure, a vacuum pipeline is adopted, the heat loss in the pipeline is reduced, the liquid nitrogen gasification rate is decreased, the two-phase flow gas mass fraction is decreased, the liquid nitrogen jet flow state is stabilized, and the liquid nitrogen flow is accurately regulated and controlled.
Owner:DALIAN UNIV OF TECH
Ventilating air-conditioning system for underground hydropower station plant and operating control method thereof
ActiveCN110332656ARegulation and stabilityPrecise regulationMechanical apparatusLighting and heating apparatusAutomatic controlAir conditioning
The invention discloses a ventilating air-conditioning system for an underground hydropower station plant and an operating control method thereof. The ventilating air-conditioning system comprises a monitoring unit, an automatic control unit, an operation interface and a performing unit, wherein the monitoring unit, the operation interface and the performing unit are separately connected to the automatic control unit; the monitoring unit comprises a temperature monitoring module and a generating set operating load monitoring module which are separately used for obtaining an air temperature ofa place in which each temperature sensor is located and real-time monitoring data of the generating set operating load; the automatic control unit comprises a thermal load calculating functional module and a critical temperature calculating functional module; the performing unit consists of a plurality of pieces of ventilating air-conditioning equipment; and the operation interface is used for inputting ventilation amount of each place, ventilation amount of each variable-air-quantity operation scheme and a corresponding ventilation equipment starting condition. The ventilating air-conditioning system can control the ventilating air-conditioning operation scheme according to the generating set operating working condition and the ventilating air-conditioning system inlet air temperature, utilizes natural resources to the greatest extent, and avoids waste of energy.
Owner:SOUTHERN POWER GRID PEAK LOAD & FREQUENCY REGULATION GENERATING CO LTD
Vertically-lifting air-ground dual-purpose vehicle transmission system
InactiveCN103317986AHigh control precisionGood regulationAircraft convertible vehiclesControl devicesCouplingReduction drive
A vertically-lifting air-ground dual-purpose vehicle transmission system comprises a turbine shaft type gas turbine with a constant rotation speed, wherein a front power output shaft is arranged at the front end of the turbine shaft type gas turbine, and a rear power output shaft is arranged at the rear end of the turbine shaft type gas turbine; the axis of the front power output shaft is coincided with the axis extended line of the rear power output shaft; the rear end of the rear power output shaft is in transmission connection with the front end of a rear transmission shaft through a rear coupler, and the rear end of the rear transmission shaft is in transmission connection with a power input shaft of a rear speed reducer through a rear synchronizer; the power input shaft of the rear speed reducer is positioned horizontally in the front and back; a power output shaft of the rear speed reducer is in transmission connection with a rotating shaft of a rear duct fan positioned above the rear speed reducer; the rotating shaft of the rear duct fan extends out downwards in the vertical direction. The provided vertically-lifting air-ground dual-purpose vehicle transmission system is small in size, light in weight, high in regulation and control accuracy and simple in operation and control, and can perform rapid and stable regulation and control on a vertically-lifting air-ground dual-purpose vehicle.
Owner:ACADEMY OF ARMORED FORCES ENG PLA
Nanometer carbon material containing heteroatoms and preparation method and application thereof, and dehydrogenation reaction method for hydrocarbons
ActiveCN105817249AImprove performanceIncrease the content of oxygen atomsPhysical/chemical process catalystsCatalystsHeteroatomDehydrogenation
The invention discloses a nanometer carbon material containing heteroatoms and a preparation method and application thereof. The nanometer carbon material containing heteroatoms comprises, by weight, 6 to 12% of O and 88 to 94% of C. In an XPS pattern, a ratio of the amount of elemental O determined by peaks in a range of 531.0 to 532.5 eV to the amount of elemental O determined by peaks in a range of 532.6 to 533.5 eV is 0.3 to 1; and a ratio of the amount of elemental C determined by peaks in a range of 288.6 to 288.8 eV to the amount of elemental C determined by peaks in a range of 286.0 to 286.2 eV is 0.4 to 2. The invention also provides a dehydrogenation reaction method using the nanometer carbon material containing heteroatoms as a catalyst. The nanometer carbon material containing heteroatoms shows good catalytic activity in the dehydrogenation reaction of hydrocarbons, can obviously improve the conversion rate of raw materials, and realizes good olefin selectivity, especially high 1-butylene selectivity.
Owner:CHINA PETROLEUM & CHEM CORP +1
Preparation method of sustained and controlled release medicine material
InactiveCN101337072ASimple stepsShort cycleOrganic active ingredientsAntipyreticMolecular sieveControlled release
The invention relates to a method for preparing the medical sustained and controlled release material, which belongs to the field of the mesoporous molecular sieve. The preparation method comprises the following steps: preparing pure silicon-based double-model mesoporous molecular sieve with double-pore structure and controllable pore canal size; dissolving silane coupler in the organic solvent, and obtaining solution A by adjusting the concentration of the silane coupler; activating the double-model mesoporous molecular sieve for 5 hours in the vacuum at 150 DEG C, then adding the molecular sieve to the solution A by a certain proportion, mixing the molecular sieve and the solution A for 5 hours at the room temperature, filtering and washing, drying the solid obtained from filtering, and then obtaining the functionalized double-model mesoporous molecular sieve; adding the medicine to the organic solvent, and obtaining solution B by adjusting the concentration of the medicine; adding the functionalized molecular sieve into the solution B according to certain proportion, mixing the molecular sieve with the solution B for 8 to 12 hours at the room temperature, filtering and washing, drying the solid obtained from washing at 60-80 DEG C, and obtaining solid powder. The preparation method has the advantages of stable structure, physiological non-toxicity, high medicine load, long medicine release time and stable medicine release rate.
Owner:BEIJING UNIV OF TECH
Metal atom-containing nano carbon material as well as preparation method and application thereof and hydrocarbon dehydrogenation reaction method
ActiveCN106925326AImprove performanceSmall impact on structureMaterial nanotechnologyOrganic-compounds/hydrides/coordination-complexes catalystsDehydrogenationNano carbon
The invention discloses a metal atom-containing nano carbon material as well as a preparation method and application thereof. The metal atom-containing nano carbon material comprises the following components in percentage by weight: 1-12% of an element O, 0.1-6% of an element N and 0.2-15% of metal elements, wherein at least a part of the metal elements are IA family metal elements and IIA family metal elements. The invention further provides a hydrocarbon dehydrogenation reaction method with the metal atom-containing nano carbon material as a catalyst. By adopting the method, relatively high raw material conversion rate and product selectivity can be achieved.
Owner:CHINA PETROLEUM & CHEM CORP +1
Single-ended negative feedback charge pump for delay-locked loop
ActiveCN107565961ASuppressing Current Mismatch IssuesReduce time jitterPulse automatic controlIntegrated circuitDelay-locked loop
The invention relates to the field of integrated circuits, and can suppress a current mismatch problem and enhance output stability. The technical scheme of the invention is as follows: provided is asingle-ended negative feedback charge pump for a delay-locked loop, wherein sources of two PMOS transistors M1 and M2 are connected with a drain of a power supply vdd, a grid of the M2 is earthed, anda grid of the M1 is connected with a last output Vctrl; sources of PMOS transistors M5 and M6 are connected with a drain of the M1, grids of the M5 and M6 are connected, a grid voltage Vbias is 0.8V;drains of the M5 and M6 are connected with drains of NMOS transistors M3 and M4, and DN and UP signals are input into grids of the M3 and M4; sources of the M3 and M4 are connected and further connected to grids of NMOS transistors M12, M13 and M14; a grid and a drain of the M13 are connected with each other, drains of the M14 and M12 are connected with the drains of the M3 and M4. The single-ended negative feedback charge pump for the delay-locked loop provided by the invention is mainly applied to design and manufacture occasions of the integrated circuits.
Owner:青岛展诚科技有限公司
Clamping device for printed circuit board detection
ActiveCN110412316AEasy to clamp and fixGuaranteed flatnessMeasurement instrument housingEngineeringElectronic component
The invention relates to the field of processing equipment of electronic components and discloses a clamping device for printed circuit board detection. The clamping device comprises a rack, a front-and-back movement supporting plate, a front-and-back movement electric cylinder, a front-and-back movement sliding rail, a left-and-right movement supporting plate, a left-and-right movement electric cylinder, a left-and-right movement sliding rail, a clamping movable plate and three clamping components, wherein the front-and-back movement supporting plate and the front-and-back movement electric cylinder are respectively arranged on the rack; the front-and-back movement supporting plate is arranged on the front-and-back movement electric cylinder and the front-and-back movement sliding rail; the left-and-right movement supporting plate is arranged on the front-and-back movement supporting plate through the left-and-right movement electric cylinder and the left-and-right movement sliding rail; the clamping movable plate is arranged on the left-and-right movement supporting plate and is provided with an adjustment sliding rail; and one of the three clamping components is arranged on theleft-and-right movement supporting plate, and the other two are arranged on the adjustment sliding rail. The clamping device achieves the technical effects that clamping size is convenient to adjust,and universality is high; and it is convenient to perform arbitrary point location detection during movement adjustment of a printed circuit board.
Owner:深圳市同创精密自动化设备有限公司
Nanometer carbon material containing heteroatoms and preparation method and application thereof, and dehydrogenation reaction method for hydrocarbons
ActiveCN105817245AImprove performanceSmall impact on structurePhysical/chemical process catalystsCatalystsPtru catalystPhysical chemistry
The invention discloses a nanometer carbon material containing heteroatoms and a preparation method and application thereof. The nanometer carbon material containing heteroatoms comprises, by weight, 4 to 12% of elemental O, 2 to 16% of elemental N and 82 to 94% of elemental C. In a pattern of X-ray photoelectron spectroscopy, a ratio of the amount of elemental O determined by peaks in a range of 531.0 to 532.5 eV to the amount of elemental O determined by peaks in a range of 532.6 to 533.5 eV is 0.1 to 0.5; and a ratio of the amount of elemental N determined by peaks in a range of 398.5 to 400.1 eV to the amount of the total elemental N is 0.8 to 1. The invention also provides a method for a dehydrogenation reaction of hydrocarbons with the nanometer carbon material containing heteroatoms as a catalyst. The nanometer carbon material containing heteroatoms shows good catalytic performance in the dehydrogenation reaction of hydrocarbons and can obviously improve the conversion rate of raw materials and product selectivity.
Owner:CHINA PETROLEUM & CHEM CORP +1
Metal atom-containing nano carbon material as well as preparation method and application thereof and hydrocarbon dehydrogenation reaction method
ActiveCN106925318AImprove performanceSmall impact on structurePhysical/chemical process catalystsHydrocarbonsX-rayDehydrogenation
The invention discloses a metal atom-containing nano carbon material as well as a preparation method and application thereof. The metal atom-containing nano carbon material comprises the following components in percentage by weight: 1-8% of an element O, 1-10% of an element N and 1-10% of metal elements, wherein the content of the element O determined by a peak at 529.5-530.8eV in an XPS (X-Ray Photoelectron Energy Spectrum) is 0.02-0.3% by weight; the ratio of the amount of the element O determined by a peak at 531.0-532.5eV to the amount of the element O determined by a peak at 532.6-533.5eV is 0.2:0.8; the ratio of the amount of the element N determined by a peak at 398.5-400.1eV to the total amount of the element N determined by the XPS is 0.6:0.95; the ratio of the amount of the element N determined at a peak at 404.0-406.5eV to the total amount of the element N is 0.05:0.35. The invention further provides a hydrocarbon dehydrogenation reaction method with the metal atom-containing nano carbon material as a catalyst. By adopting the method, relatively high raw material conversion rate and product selectivity can be achieved.
Owner:CHINA PETROLEUM & CHEM CORP +1
Nanometer carbon material containing heteroatoms and preparation method and application thereof, and dehydrogenation reaction method for hydrocarbons
ActiveCN105817248AImprove performanceSmall impact on structurePhysical/chemical process catalystsCatalystsDehydrogenationHeteroatom
The invention discloses a nanometer carbon material containing heteroatoms and a preparation method and application thereof. The nanometer carbon material containing heteroatoms comprises, by weight, 1 to 8% of elemental O, 2 to 8% of elemental N and 84 to 97% of elemental C. In a pattern of X-ray photoelectron spectroscopy, a ratio of the amount of elemental O determined by peaks in a range of 531.0 to 532.5 eV to the amount of elemental O determined by peaks in a range of 532.6 to 533.5 eV is 1.2 to 2.5; and a ratio of the amount of elemental N determined by peaks in a range of 398.5 to 400.1 eV to the total amount of the elemental N is 0.7 to 1. The invention also provides a dehydrogenation reaction method for hydrocarbons with the nanometer carbon material containing heteroatoms as a catalyst. The nanometer carbon material containing heteroatoms shows good catalytic performance in the dehydrogenation reaction of hydrocarbons and can obviously improve the conversion rate of raw materials and product selectivity.
Owner:CHINA PETROLEUM & CHEM CORP +1
Method for testing homogeneous control effect in threshing and redrying process
ActiveCN105973815ASystematicStrong explainabilityComponent separationColor/spectral properties measurementsLocal variationChemical composition
The invention provides a method for testing the homogeneous control effect in the threshing and redrying process. The method sequentially comprises the following steps: extracting a homogeneously controlled finished product to obtain a sample, carrying out laboratory detection on the extracted sample, recording the spectrogram and obtaining the chemical value corresponding to chemical components to be tested, and calculating the integral variation coefficient, the local variation coefficient and the covariant variation coefficient of the chemical value corresponding to the chemical components to be tested. The uniformity of sheet tobacco is evaluated through the integral variation coefficient, the local variation coefficient and the covariant variation coefficient controlled in the oriented procedure, so the effectiveness and the stability of the homogeneous control method are systemically reflected.
Owner:HUAHUAN INT TOBACCO +1
Compression packaging machine for mask production
The invention relates to a compression packaging machine for mask production. The compression packaging machine comprises a machine body and a butt joint mechanism, wherein an inner groove is formed in the middle of the machine body; a material opening is formed in the right end part of the machine body in a penetrating mode; an end groove is formed in the side end of the middle of the inner groove; and a sliding mechanism is arranged at the inner end of the inner groove. The compression packaging machine for mask production has the beneficial effects that lubricating oil can be conveniently guided into the compression packaging machine through the material opening, and the oil can flow into a plate channel through a channel hole, so that the plate channel has a better lubricating effect,and the plate channel can be ensured to be more smooth and safe to use; and a compression plate is arranged at the inner end of the plate channel through movable connection, and an air cylinder in theprior art is arranged at the top end of the compression plate, so that the compression plate can be conveniently pushed to move at the end part of the plate channel, then a mask at the top end of thedevice body is compressed and machined, the mask can be more tightly attached, workers can conveniently package the mask, the mask is placed in an auxiliary box for storage, and the operation is extremely convenient.
Owner:DONGGUAN XIANGFEI INTELLIGENT EQUIP TECH CO LTD
Metal atom-containing nano carbon material as well as preparation method and application thereof and hydrocarbon dehydrogenation reaction method
ActiveCN106925321AImprove performanceSmall impact on structurePhysical/chemical process catalystsCatalystsPtru catalystPhysical chemistry
The invention discloses a metal atom-containing nano carbon material as well as a preparation method and application thereof. The metal atom-containing nano carbon material comprises the following components in percentage by weight: 0.5-10% of an element O, 0.1-4% of an element N and 1-25% of metal elements, wherein the ratio of the content of the element O determined by a peak at 529.5-530.8eV in an XPS (X-Ray Photoelectron Energy Spectrum) to the total amount of the element O determined in the XPS is 0.02:0.3; the ratio of the amount of the element O determined by a peak within 531.0-532.5eV to the amount of the element O determined by a peak within 532.6-533.5eV is 0.3:1; the ratio of the amount of the element N determined by a peak within 398.5-400.1eV to the total amount of the element N determined by the XPS is 0:0.5; the ratio of the content of the element N determined by a peak within 403.5-406.5eV to the total amount of the element N determined by the XPS is 0.2:1. The invention further provides a hydrocarbon dehydrogenation reaction method with the metal atom-containing nano carbon material as a catalyst. By adopting the method, relatively high raw material conversion rate and product selectivity can be achieved.
Owner:CHINA PETROLEUM & CHEM CORP +1
Cryoablation catheter and cryoablation system
ActiveCN112220552AImprove securityEasy to useSurgical instruments for coolingCatheterBiomedical engineering
The invention provides a cryoablation catheter and a cryoablation system. The cryoablation catheter comprises a catheter body and freezing balloons, wherein a refrigerant inlet chamber, a main refluxing chamber and a plurality of auxiliary refluxing chambers are arranged in the catheter body, the refrigerant inlet chamber, the main refluxing chamber and the auxiliary refluxing chambers all communicate with the freezing balloons, and the auxiliary refluxing chambers are used for regulating the internal pressure of the freezing balloons in an auxiliary manner. Based on the condition that cold energy of the cryoablation catheter is adjustable and controllable, the internal pressure of the freezing balloons can be stably regulated and controlled through employing a multi-chamber refluxing mode, the internal pressure of the freezing balloons of various dimensions can be in a safe use range, the clinical safe use of cryoablation catheters of various specifications is achieved, and customized / user-friendly treatment of different requirements is achieved. In addition, through additionally arranging the auxiliary refluxing chambers, the accuracy of control on flow rate can be further improved, the problem of single-chamber regulating that over regulation easily occurs is avoided, and the safety of cryoablation is improved.
Owner:SHANGHAI ARTECHMED MEDICAL TECH CO LTD
Automatic power generation control system for wind power plant
InactiveCN111628524ARegulation and stabilityMeet regulatory needsWind motor controlSingle network parallel feeding arrangementsData acquisitionData acquisition module
The invention discloses an automatic power generation control system for a wind power plant. The system comprises a wind power plant data collection module which obtains power data of the wind power plant and transmits the power data to an electric energy distribution module; a grid-connected data acquisition module which is used for acquiring grid-connected side data and transmitting the grid-connected side data to a power control module; a scheduling data exchange module which is used for receiving a power scheduling instruction, transmitting the power scheduling instruction to the power control module and uploading power data of a plurality of fans; the power control module which is used for obtaining active power needing to be output by the wind power plant according to the power scheduling instruction and the grid-connected side data; and the electric energy distribution module which is used for distributing the active power needing to be output by the wind power plant through thepower distribution model to obtain an active power demand of each fan and correspondingly transmitting the active power demand to the fans. By constructing a reasonable data transmission channel, operation and state information of a fan group can be processed and analyzed, the power adjustable fans in the wind power plant can be controlled by combining the grid-connected side data, influence of electric energy fluctuation on the power grid is overcome, and stable regulation and control of a wind power plant unit are achieved.
Owner:XUCHANG XUJI WIND POWER TECH +1
Preparation method of sustained and controlled release medicine material
InactiveCN101337072BSimple stepsShort cycleOrganic active ingredientsAntipyreticMolecular sieveControlled release
The invention relates to a method for preparing the medical sustained and controlled release material, which belongs to the field of the mesoporous molecular sieve. The preparation method comprises the following steps: preparing pure silicon-based double-model mesoporous molecular sieve with double-pore structure and controllable pore canal size; dissolving silane coupler in the organic solvent, and obtaining solution A by adjusting the concentration of the silane coupler; activating the double-model mesoporous molecular sieve for 5 hours in the vacuum at 150 DEG C, then adding the molecular sieve to the solution A by a certain proportion, mixing the molecular sieve and the solution A for 5 hours at the room temperature, filtering and washing, drying the solid obtained from filtering, andthen obtaining the functionalized double-model mesoporous molecular sieve; adding the medicine to the organic solvent, and obtaining solution B by adjusting the concentration of the medicine; adding the functionalized molecular sieve into the solution B according to certain proportion, mixing the molecular sieve with the solution B for 8 to 12 hours at the room temperature, filtering and washing,drying the solid obtained from washing at 60-80 DEG C, and obtaining solid powder. The preparation method has the advantages of stable structure, physiological non-toxicity, high medicine load, long medicine release time and stable medicine release rate.
Owner:BEIJING UNIV OF TECH
Meloxicam suspension capsule and preparation method thereof
InactiveCN112587497AFast onset of distributionSolve poor complianceOrganic active ingredientsAntipyreticSoftgelPatient compliance
The invention relates to the field of medicine, and particularly relates to a meloxicam suspension capsule and a preparation method thereof. The meloxicam suspension capsule comprises a capsule shelland meloxicam nano suspension filled in the capsule shell. By directly filling the meloxicam nano suspension in the capsule shell to form a soft capsule preparation, when the meloxicam suspension capsule preparation is orally taken, after the capsule shell is dissolved, the meloxicam suspension can directly enter a human body to be released; compared with the situation that tablets, hard capsulesand the like need to be wet again after entering the human body, the meloxicam preparation provided by the invention has the advantage of quicker distribution response; and in addition, the wrapping of the soft capsule also can solve the problem of unpleasant taste after meloxicam is dissolved, and solves the problem of poor patient compliance.
Owner:SUZHOU CHUNGHWA CHEM & PHARMA IND
A Network Mechanism in Textile Equipment
ActiveCN108914307BGuaranteed to workRegulation and stabilityTextiles and paperControl systemEngineering
The invention provides a network mechanism in texturizing equipment. It solves the technical problems that in the existing control system, when the compressed air stagnates in the hose, water will slowly seep out and stay in the hose, causing the controller to lose its ability to regulate and control the regulating valve, and poor working stability. The network mechanism in the texturing equipment, the texturing equipment includes a frame, the network mechanism includes a compressed air pipeline, one end of the compressed air pipeline is an air inlet end, and the other end of the compressed air pipeline is an air outlet end, and the frame is provided with a A regulating mechanism that regulates the air pressure in a compressed air line. The invention has the advantage of stable control.
Owner:浙江永鑫科技股份有限公司
Multistage variable-pressure oil cylinder and control method thereof
ActiveCN106996405ASame characteristicsSimple control methodFluid-pressure actuatorsCylinder blockControllability
The invention discloses a multistage variable-pressure oil cylinder and a control method thereof. The variable-pressure cylinder comprises a first-stage cylinder block, a first-stage piston rod and a protective barrel. The first-stage piston rod capable of being pushed out or recovered is mounted in the first-stage cylinder block. An inner oil cavity of the first-stage cylinder block is partitioned into a first oil cavity body and a second oil cavity body through the first-stage piston rod. A first oil channel communicating with the first oil cavity body and a second oil channel communicating with the second oil cavity body are formed in the first-stage cylinder block. An oil cavity is formed in the first-stage piston rod and provided with a second-stage piston rod capable of moving relatively. The oil cavity is partitioned into a third oil cavity body and a fourth oil cavity body through the second-stage piston rod. According to the multistage variable-pressure oil cylinder provided by the invention, multistage boosted pressure and multistage reduced pressure can be output through modification for the first-stage piston rod; and in addition, the control method of the multistage variable-pressure oil cylinder is further provided, control is easy, and the stability and controllability are high.
Owner:FOSHAN HENGLITAI MACHINERY
Segmental beam bottom mold system
InactiveCN110587789AReliable adjustment of inclination angleImprove reliabilityMouldsAuxillary shaping apparatusAbnormal shapedTelescopic cylinder
The invention relates to the field of segmental beams, in particular to a segmental beam bottom mold system. The system comprises a fine adjustment base, a foundation support, elevated supports, an adjusting device and a bottom mold. The lower end of the foundation support is provided with the fine adjustment base capable of being subjected to position adjusting relative to the foundation support,at least one elevated support is arranged on the upper end of the foundation support, the upper end of the elevated support on the uppermost is provided with the bottom mold through the adjusting device, and the adjusting device comprises a hydraulic telescopic cylinder used for carrying out angle fine adjustment on the bottom mold and a telescopic adjusting supporting rod for auxiliary supporting of the bottom mold. The segmental beam bottom mold system is reasonable in structural design, convenient to apply and control, capable of being stably regulated, high in bottom mold use rate, capable of reducing cost, suitable for the large-span segmental beam predication with the beam body bottom being in set height and also suitable for construction of segmental beams in various special shapes.
Owner:CHINA RAILWAY 16TH BUREAU GRP CO LTD +1
Electromagnetic heating device based on multiple coils and temperature control method of device
ActiveCN111629467AFlexible choice of shapeAccurate temperature controlCoil arrangementsTemperature controlMagnetic heating
The invention discloses an electromagnetic heating device based on multiple coils and a temperature control method of the device, belongs to the technical field of electromagnetic heating, and aims tosolve the problems of non-uniform heating and low heating efficiency of a resistance coil heating mode adopted in the existing mold heating and plastic process. The device comprises a heating plate,the heating plate comprises a plurality of heating areas; each heating area comprises a control module, a PWM control module, a switching circuit, an electromagnetic coil and a current measuring resistor. The control module, the PWM control module, the switching circuit and the electromagnetic coil form a control circuit, the output end of the electromagnetic coil is connected with the control module through the current measuring resistor to form a feedback circuit, and the control circuit and the feedback circuit form a temperature control closed loop. The heating efficiency is high, all thecoils are independently controlled in a closed-loop mode, and the temperature is accurately regulated and controlled.
Owner:HARBIN UNIV OF SCI & TECH
A control method and system of a household electric appliance
PendingCN109214622AAlleviate electricity pressureImprove resource utilizationResourcesEmbedded systemElectricity price
The invention relates to a control method and system of a household electric appliance. The method comprises the following steps: judging whether a user load exceeds a prescribed value; if so, takingthe current electricity price and the running state of the current household appliance as input quantities of a preset cloud model controller, obtaining a regulating quantity of the household appliance to regulate the household appliance; if not, updating the user load to re-judge whether the user load exceeds the prescribed value; according to the technical proposal provided by the invention, using cloud model to optimize the intelligent control of household appliances. In addition, one of the advantages of cloud model control is stable, which can reduce the difference between peak and valleyof the regulated power network without suddenly increasing or decreasing the load of the power network.
Owner:CHINA ELECTRIC POWER RES INST +2
Constant-temperature and constant-humidity air conditioning system
PendingCN113251520AReduce use costLow water quality requirementsMechanical apparatusHeating and ventilation casings/coversEngineeringAir conditioning
The invention relates to a constant-temperature and constant-humidity air conditioning system. The constant-temperature and constant-humidity air conditioning system comprises a cold coil pipe and a hot coil pipe which are sequentially arranged in an air conditioning cabinet body in the air supply direction, a water spraying assembly used for humidifying air is arranged between the cold coil pipe and the hot coil pipe, and a three-way valve connected to a cold medium and a hot medium is arranged at the input end of the cold coil pipe. According to the constant-temperature and constant-humidity air conditioning system, an original high-cost humidifying device is removed, air is humidified in a water spraying mode, and the use cost and the requirement for water quality are lowered through small-amplitude modification; and due to the dual heating design, the air supply temperature and humidity can be regulated and controlled more stably, and the energy consumption is lower.
Owner:苏州嘉铭塑胶五金制品有限公司
Ventilation and air-conditioning system and operation control method for underground hydropower plant building
ActiveCN110332656BRegulation and stabilityPrecise regulationMechanical apparatusLighting and heating apparatusAutomatic controlControl cell
Owner:SOUTHERN POWER GRID PEAK LOAD & FREQUENCY REGULATION GENERATING CO LTD
Hydroelectric turbine generator component
InactiveCN111946536AAdjustable speedEasy to adjust speedHydro energy generationReaction enginesWater flowEngineering
The invention relates to the field of turbine power generation devices, in particular to a hydroelectric turbine generator component. The hydroelectric turbine generator component comprises a supporting mechanism, a flow guiding mechanism, a flow limiting mechanism and an adjusting mechanism, wherein the flow guiding mechanism is rotationally clamped to the inner end surface of the supporting mechanism, the adjusting mechanism for supporting is fixedly connected to the inner end surface of the supporting mechanism, the flow limiting mechanism is slidably clamped to the inner end surface of theadjusting mechanism, and the flow limiting mechanism is slidably inserted into the supporting mechanism. The hydroelectric turbine generator component has the beneficial effects that through the flowlimiting mechanism and the adjusting mechanism, a user can conveniently adjust the speed of water flow by adjusting the displacement distance between the flow limiting mechanism and the adjusting mechanism, so that the subsequent power generation is conveniently carried out according to requirements; and meanwhile, when the flow limiting mechanism displaces to the limit, no barrier exists in an installation groove, so that the speed of the water flow is improved to the maximum extent, and thus the power generation efficiency is improved.
Owner:王照雨
A nano-carbon material containing metal atoms, its preparation method and application, and a hydrocarbon dehydrogenation reaction method
ActiveCN106925324BImprove performanceSmall impact on structurePhysical/chemical process catalystsCatalystsPtru catalystPhysical chemistry
The invention discloses a nanocarbon material containing metal atoms and its preparation method and application. The nanocarbon material contains 1-15% by weight of O element, 0.2-2% by weight of N element and 0.2-15% by weight of metal elements. The ratio of the content of O element determined by the peak at 529.5-530.8eV in XPS to the total amount of O element determined by XPS is 0.02-0.2 The ratio of the amount of O element determined by the peak at 533.5 eV is 0.4-2.5, and the ratio of the amount of N element determined by the peak at 398.5-400.1 eV to the total amount of N element determined by XPS is 0.5-1. The invention also provides a hydrocarbon dehydrogenation reaction method using the metal atom-containing nanocarbon material as a catalyst, which can obtain higher raw material conversion rate and product selectivity.
Owner:CHINA PETROLEUM & CHEM CORP +1
Basalt fiber production method and wire drawing device thereof
InactiveCN112266175AImprove reliabilityNo human intervention requiredGlass making apparatusMelting tankEngineering
The invention discloses a basalt fiber production method and a wire drawing device thereof, which relate to the technical field of basalt fiber production and wire drawing, and aim to solve the problems of easy crystallization and blockage. The device comprises a box body, a heating mechanism and a cooling mechanism, wherein the heating mechanism is installed in the box body, the outer wall of thebottom of the box body is connected with evenly-distributed discharge spouts through flanges, a thermal induction chamber matched with the discharge spouts is fixed to the outer wall of the bottom ofthe box body through screws, and the tops of the discharge spouts are located in the thermal induction chamber; an expansion bag expanding with heat and contracting with cold is arranged in the thermal induction chamber. The production method comprises the following steps of crushing and cleaning basalt ore, adding basalt ore into a melting tank of a melting furnace, and heating to 1450-1500 DEGC to melt the basalt ore. The aim of controlling the speed of the cooling degree based on the temperature of the discharge spout is achieved, the problem that the temperature difference of materials and the cooling speed are not matched is effectively solved, and reliability is improved.
Owner:刘福平
Hook-type switch assembly
PendingCN111540633ADisconnected implementationEasy to operateElectric switchesHemt circuitsStructural engineering
The invention relates to the technical field of circuit switch control equipment. The invention particularly relates to a hook-type switch assembly which comprises a shell, an adjusting shell and a base, the base is an L-shaped plate, a connecting rod is mounted on a transverse plate of the base through a mounting plate; a connecting sheet penetrates through the transverse plate; the top end of the connecting sheet is connected with a circuit board at the top end of a longitudinal plate; the adjusting shell is arranged between the bottom plate and the circuit board; a plurality of contact pieces for connecting a circuit are mounted on the plate surface of one side, facing the longitudinal plate, of the adjusting shell; a clamping groove is formed in the plate face of the other side of theadjusting shell, a baffle, a first guide block, a second guide block and a third guide block are arranged in the clamping groove, the top end of the connecting rod is located in the clamping groove and located at different positions along with movement of the adjusting shell, and the on-off adjustment of the switch assembly is achieved.
Owner:鹤壁市德安电气有限公司
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