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84results about How to "Avoid life impact" patented technology
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Frost-less air-source heat pump hot water unit and proportional-integral-differential control method for same
InactiveCN103245151AWell mixedImprove performanceFluid heatersCorrosion preventionProportional integral differentialEngineering
The invention discloses a frost-less air-source heat pump hot water unit and a proportional-integral-differential control method for the same. The proportional-integral-differential control method includes performing computation according to received air temperature and humidity parameters, received air pressure parameters and received surface temperature parameters of an evaporator when outdoor temperature parameters which are transmitted by a temperature and humidity sensor and are received by a computation controller are lower than 0 DEG C, controlling the opening of an electronic expansion valve according to a computation result and regulating the surface temperature of the evaporator by means of increasing or reducing the opening of the electronic expansion valve so that the surface temperature of the evaporator is constantly higher than a frost formation point; and enabling a silicon-controlled power regulator to judge a suction superheat degree of a compressor according to received suction temperature and suction pressure of the compressor, increasing or reducing the power of an electric heater and maintaining that the suction superheat degree of the compressor only varies within a set value range. The frost-less air-source heat pump hot water unit and the proportional-integral-differential control method have the advantage that adjustment for the opening of the electronic expansion valve is matched with adjustment for the power of the electronic heater, so that the purpose of maintaining safe and efficient running of a system is achieved.
Owner:NANJING NORMAL UNIVERSITY +1
Rapid forming method of lithium ion power battery
InactiveCN101728579ALower impedanceImprove performanceFinal product manufactureSecondary cells charging/dischargingInternal resistanceElectrolyte
The invention discloses a rapid forming method of a lithium ion power battery, which is characterized by comprising the following steps of: 1. precharging; 2. settling and aging; and 3. charging by adopting an intermittent depolarized single-stage impulse charging mode until charge is finished. Because the forming process of the invention adopts the intermittent depolarized single-stage impulse charging mode, the impedance of an SEI (Solid Electrolyte Interface) membrane is lowered, thereby reducing the internal resistance of the battery and improving the rate discharge performance of the lithium ion power battery. Because the forming process of the invention adopts an impulse current with a lower frequency, the battery can be naturally depolarized within the impulse-off time, thereby lowering the polarizing effect, stabilizing the charging voltage, improving the charging efficiency, simultaneously avoiding the high requirement brought by a high frequency impulse current charging mode for equipment, improving the utilization efficiency of electric energy and greatly lowering the production cost. The step of precharge is adopted to facilitate the formation of the stable SEI membrane, thereby improving the performance of the battery.
Owner:SKY ENERGY LUOYANG
Steel coil feeding and speed controlling device of full-automatic uncoiler
The invention provides a steel coil feeding and speed controlling device of a full-automatic uncoiler, belonging to the technical field of the full-automatic uncoiler. The device overcomes the defectof loose coil or impact coil since the existing full-automatic uncoiler can not accurately control the feeding speed of a steel coil in real time. The steel coil feeding and speed controlling device of the full-automatic uncoiler comprises a rotating shaft provided with an installation section and a suspension arm section, wherein the installation section of the rotating shaft is arranged inside abase and is connected with a power mechanism for driving the rotating shaft to rotate along the positive direction and the opposite direction; and the suspension arm section of the rotating shaft isprovided with a steel coil tensioning mechanism, and one side of the suspension arm section along the uncoiling direction of the steel coil is provided with an ultrasonic controller used for detectingthe sagging degree of an uncoiled steel plate. Furthermore, the steel coil feeding and speed controlling device also comprises an electrical control system for controlling the power mechanism to drive the rotating shaft to rotate along the positive direction and the opposite direction according to the signals transmitted by the ultrasonic controller. The device can be used for automatically feeding the steel coil and controlling the feeding speed and the stretching force of the steel coil in real time, and can adjust when the steel coil has the phenomenon of loose coil or impact coil.
Owner:ZHEJIANG JINGGONG SCI & TECH
Constant-frequency air conditioner and control method and unit thereof
ActiveCN104879881AAvoid life impactAvoid temperature fluctuationsMechanical apparatusSpace heating and ventilation safety systemsAutomatic controlConstant frequency
The invention provides a constant-frequency air conditioner and a control method and unit thereof. The control method includes: acquiring current indoor temperature and current outdoor temperature; comparing the current indoor temperature to set temperature of the constant-frequency air conditioner; and if the current indoor temperature is lower than or equal to the set temperature, adjusting flow of coolant of the constant-frequency air conditioner through electronic expansion valves according to the current outdoor temperature and the set temperature. The electronic expansion valves are disposed on connecting pipes directly used for gas returning of the compressor and arranged at two ends of a compressor of the constant-frequency air conditioner and are used for adjusting the flow of the coolant. The influence of shutdown at satisfied temperature upon fluctuation of room temperature and upon life of the compressor can be avoided, and comfortable functional auto-control is achieved for the constant-frequency air conditioner.
Owner:GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
Relay sudden change impact resisting and protecting system and method thereof
The invention discloses a relay sudden change impact resisting and protecting system and a method of the relay sudden change impact resisting and protecting system. The system comprises an alternating current zero crossing point detection circuit, a relay contact motion detection circuit, a time-delay circuit generating adjustable delay time and a processing circuit. The processing circuit comprises a relay trigger module, a first processing module, a first computing module, a second processing module, a storage module, a third processing module and a judgment module. According to the system and method, the alternating current zero crossing point detection point time can be combined, the trigger signal sending time sequence of a relay is adjusted according to the opening and closing motion delay characteristic of the relay after receiving of trigger signals and relay characteristics and load characteristics in practical application, the contact motion time of the relay can be prevented from being influenced by impact currents, and the service life of the relay is prevented from being influenced by the impact currents generated by loads.
Owner:DCT SCI & TECH DEV LIMITED
System for operating and activating lithium ion battery for intelligent home
InactiveCN106505269AAvoid life impactImprove usageBatteries circuit arrangementsSecondary cells servicing/maintenanceUltrasound attenuationInternal resistance
The invention provides a system for operating and activating a lithium ion battery for intelligent home. The inventor found that the internal resistance of the battery is gradually increased along with the growth of using time of the battery, the raising condition of the temperature is obvious in a battery charging process, and a high temperature environment is one of principal factors of causing battery attenuation, so that the temperature of the battery is detected by the inventor in the charging process, and charging for the battery in a normal temperature range is guaranteed; moreover, an activation mode is arranged, when the battery condition is deteriorated, the battery is reactivated through the activation mode, the internal environment of the battery is adjusted through pulse current, the activity of positive and negative electrodes is activated, the internal resistance is reduced, and the battery condition is improved, so that the purpose of prolonging the service life of the battery is reached; and moreover, the system also comprises safety measures, and other components of intelligent home are prevented from being damaged by excess temperature or fire of the battery.
Owner:蔡秋华
Method for installing door/window cover, matched tool, fitting and door/window cover
The invention provides a method for installing a door / window cover, a matched tool, a fitting and the door / window cover. The invention is characterized in that the method adopts an expansion bolt with a nail or a screw nail, a dowel and a connecting piece component, and comprises the steps of arranging a support bar and a glue groove on the door / window cover and a wall, tightly blocking by a wedge, injecting foaming glue and the like; and the invention provides the door / window frame cover with a support bracket, a perpendicularity disc, a chamfer clamp, an expansion bolt with a nail or a screw nail, a dowel, a support bar, a glue groove, a wedge, a connecting piece, a hasp with a connecting piece, a glue groove and a support bar. The invention has the advantages of being firm in installation, improving the work efficiency, saving the glue, improving moisture-proof, sound-proof and heat-preserving effects, and prolonging the service life of the door / window cover.
Owner:徐一鸣
Audio playing method and system, mobile terminal, and WIFI earphone
PendingCN107182011ASmooth playbackImprove playback qualityStereophonic circuit arrangementsNetwork topologiesSound source locationSound sources
The invention provides an audio playing method and a system, a mobile terminal and a WIFI earphone. The audio playing method comprises the following steps, establishing the WiFi network connection between mobile terminal and the WiFi earphone in the same WiFi network, acquiring the current position parameter of the WiFi earphone, subjecting the audio file of the mobile terminal and the current position parameter of the WiFi earphone to fusion algorithm, and playing the audio file through the WiFi earphone after the fusion algorithm. When the head position of a user changes, the audio file and the current position parameter of the WiFi earphone are subjected to algorithm fusion. After that, the audio file is played through the WIFI earphone. Therefore, the sound source location of a virtual scene simulated by the audio file in the brain of the user is fixed, so that the auditory way of the user in a real state is realized. As a result, the listening experience of the user is more comfortable, and the playing quality of the audio file is improved.
Owner:SHENZHEN TECNO TECH CO LTD
Control method and system of multi-split heat pump system
ActiveCN109974308AAchieve coordinationAvoid damageFluid heatersSpace heating and ventilation detailsMachine controlControl system
The invention discloses a control method of a multi-split heat pump system. The control method comprises the following steps that the priority of each heat pump unit of the heat pump system is set, and the priority sequence of all the heat pump units is determined according to the priority; the heat pump unit with the highest priority is selected as an on-line coordination control main machine, and the heat pump units with the priority lower than the on-line coordination control main machine are used as on-line coordination control slave machines; wherein each on-line coordination control slave machine is controlled by the on-line coordination control main machine; when the heat pump system operates, the on-line coordination control main machine controls all the heat pump units to be started or closed in sequence according to the priority sequence, and a heating mode is operated according to the water level and the water temperature of a current water tank; and the heating mode comprises a direct heating mode or a circulating heating mode. The control method of the multi-split heat pump system can effectively realize on-line coordinated control of a plurality of heat pump units, and is convenient to control and efficient and energy-saving. The invention further provides a control system of the multi-split heat pump system.
Owner:GUANGDONG PHNIX ECO ENERGY SOLUTION
On-off control circuit
ActiveCN105262323AEasy to operateEffective absorptionEmergency protective arrangements for limiting excess voltage/currentPower conversion systemsControl circuitElectric signal
The invention discloses an on-off control circuit provided with a positive input end, a negative input end, a positive output end and a negative output end, wherein the negative input end is connected with the negative output end. The on-off control circuit comprises a fuse unit, a surge protection unit, a pre-charging unit and a filtering unit, wherein the input end of the fuse unit is connected with the positive input end, the output end of the fuse unit is connected with the input end of the surge protection unit, the output end of the surge protection unit is connected with the positive output end, the pre-charging unit is connected in series with the two ends of the surge protection unit, and the filtering unit is arranged between the positive output end and the negative output end. Through integration of the circuit, the circuit is more stable to carry out surge prevention operation and filtering operation on an input electric signal, and meanwhile, the production cost is reduced.
Owner:SHENZHEN COOLTEK ELECTRIC VEHICLE COOLING TECH CO LTD
Noise monitoring, identifying and positioning method and system and computer readable storage medium
PendingCN110907895AQuick identification and positioningEliminate noise effectsPosition fixationEngineeringTime information
The invention provides a noise monitoring, identifying and positioning method and system, and a computer readable storage medium. The method comprises the following steps: receiving noise signals detected by noise monitoring equipment arranged at different positions, transmission directions of the noise signals, and starting time information of the detected noise signals; for the two groups of noise signals detected in the same time period, calculating the sound similarity between the two groups of noise signals; when judging that the sound similarity reaches a set threshold, determining thatthe two belong to the same noise source; determining a target spatial position corresponding to a noise source by combining the spatial positions of the two noise monitoring devices which detect the two groups of noise signals and the transmission directions of the two groups of noise signals and utilizing a triangulation positioning principle. The noise source can be quickly recognized and positioned, the noise influence can be eliminated in time, and the influence on work, study and life of people is avoided.
Owner:重庆商勤科技有限公司
Method for packaging dye sensitized solar cell by low glass powder
InactiveCN102568866AAvoid life impactSimple production processLight-sensitive devicesSolid-state devicesScreen printingPlatinum
The invention discloses a method for packaging a dye sensitized solar cell by low glass powder. The method comprises the steps as follows: (1) respectively printing a layer of silver gate electrode pattern on a light anode conducting glass substrate and a counter electrode conducting glass substrate with a package hole formed through drilling, and sintering the patterns; (2) printing a titanium dioxide film pattern between silver gate electrodes on the light anode conducting glass substrate, and sintering the titanium dioxide film pattern; (3) making a sealing frame and silver gate electrode protection layer patterns on the silver gate electrodes and the frame of the light anode conducting glass substrate; (4) sintering a screen printing platinum electrode pattern between the silver gate electrodes on the counter electrode conducting glass substrate; (5) counterpointing and sintering the light anode and the counter electrode patterns; (6) pouring dye into the package hole, and carrying out dye sensitization; (7) pouring the package hole by electrolyte; and (8) solidifying and sealing the package hole by ultraviolet to obtain the package hole. The method provided by the invention can protect the silver gate electrodes of solar cells, prolong the service life of the cells, improve the production efficiency and reduce the manufacturing cost.
Owner:IRICO
Condensation photovoltaic module with hollow glass packaging structure
InactiveCN103035765AProtectAvoid life impactPhotovoltaicsPhotovoltaic energy generationCondensing lensAluminium
The invention provides a condensation photovoltaic module with a hollow glass packaging structure. The photovoltaic module with the hollow glass packaging structure comprises a condensing lens panel, a condensing lens which is placed on the condensing lens panel, a circuit base plate which is sticked with a solar battery, a terminal box which is placed at the back of the photovoltaic module. The condensing lens panel is packed with the circuit base plate through a hollow aluminum spacer and a hot melting butyl rubber which is placed on the hollow aluminum spacer. The internal hollow aluminum spacer is filled with molecular sieve. Frame around the photovoltaic module is filled with silicone adhesive to seal and splice edges. The condensation photovoltaic module with the hollow glass packaging structure can effectively absorb hydrone in an interlayer in air, can prevent circuit element from being corroded, and can protect the photovoltaic module well. In addition, the condensation photovoltaic module can prevent service life of the photovoltaic module from being influenced by temperature difference causing pressure difference between the inside of the photovoltaic module and the outside of the photovoltaic module, reduce shape change of the condensing lens panel, and ensure stability of a condensation photovoltaic module system and photoelectric conversion efficiency.
Owner:WUXI ZHONGBO ELECTRONICS
Pitching assembly of radar scanner for detecting foreign matters on runways
ActiveCN103411105AImprove scanning accuracySolve the slow scanning speedStands/trestlesForeign matterAviation
The invention belongs to technologies for aviation support equipment, and relates to an improved pitching assembly of a radar scanner for detecting foreign matters on runways. The improved pitching assembly comprises a right backup plate (1), a backup plate cover (2), a servo module (3), a right angular contact ball bearing (4), a pitching frame end cover, a left arm, a left angular contact ball bearing (7), a left backup plate, a backup plate cover (9), a pitching frame and a right arm. A pitching motor is a permanent-magnet direct-current brushless torque motor (20) and is of a hollow shaft sleeve type, a stator of the pitching motor is mounted on a servo frame (18), a rotor of the pitching motor is mounted on the left backup plate (21), the servo module (3) is mounted inside the pitching frame (18), a pitching angle is fed via a rotary transformer (26) sleeved on a revolving shaft (23), a revolving stator is fixed into the pitching frame by the aid of a hoop, and axial clearance and pre-tightening force can be regulated by the aid of a sleeve (25) and a jackscrew (24). The improved pitching assembly has the advantages of high transmission and scanning precision, capability of meeting the requirement on low scanning speed, light weight, small size, high system rigidity, protection grade and reliability and long service life.
Owner:BEIJING QINGYUN AVIATION INSTR CO LTD
Nitrogen spring structure
PendingCN109869432APrevent flying outAvoid the risk of accidents caused by burstingSpringsGas based dampersNitrogenEngineering
The invention relates to a nitrogen spring structure which comprises a cylinder body, a plunger rod and a middle sleeve. The cylinder body is provided with a cylinder body hole. The middle sleeve is connected with the upper portion of the inner wall of the cylinder hole in a sealed manner. The plunger rod is connected with an inner hole of the middle sleeve in a sealed and sliding manner. The cylinder hole of the cylinder body is filled with high-pressure nitrogen. The inner end face of the plunger rod is provided with step type bosses of at least two steps extending outwards. The inner wall of the middle sleeve is provided with a backstop boss extending inwards and a limiting boss. A Y-shaped sealing ring is arranged in a sealing ring containing groove. A ring-shaped pressure relief thin-wall boss is arranged on the periphery of the middle sleeve. The outer end face of the plunger rod is provided with at least one stress face forming an inclination angle relative to the outer end face. An installing hole is formed in the bottom of the cylinder hole of the cylinder body. A plug installing base is fixed to the installing hole. The plug installing base is provided with a plug blind hole facing the cylinder hole. The nitrogen spring structure can prevent the cylinder body from cracking, prevent the plunger rod from breaking and flying out and prevent unbalance loading, and has a function of plunger rod overtravel protection.
Owner:JIANGSU NAIMAXIN PRECISION MACHINERY CO LTD
Vacuum tube switching core used for M type on-load tap-changer
ActiveCN101752070AEasy to tapImprove electrical lifeVariable inductancesVariable transformersTap changerThree-phase
The invention relates to a vacuum tube switching core used for an M type on-load tap-changer, which can be exchanged with a switching core of a traditional M type on-load tap-changer without changing a selector switch oil chamber. The vacuum tube switching core comprises a vacuum tube transition changing-over assembly and a main flow passage part, wherein an upper group of three-phase cavel contacts and a lower group of three-phase cavel contacts in the main flow passage part are combined together, placed at the lower part of the vacuum tube transition changing-over assembly and connected with an original main contact through soft connection to ensure that the position of the main contact is not changed. In the invention, the appearance structure and the installation size of switching core of the original M type on-load tap-changer are retained, thereby the switching core of the original M type on-load tap-changer can be conveniently replaced without changing the M type on-load tap-changer and other parts, for example, the structure of the selector switch oil chamber and the position of a connection pile head are not changed. The invention is suitable for the replacement and maintenance of the M type on-load tap-changer used on site and the manufacture of a new M type on-load tap-changer.
Owner:SHANGHAI HUAMING POWER EQUIP CO LTD +1
Test system and method for turbine blade integrated thin film temperature sensor
PendingCN113865751AAvoid life impactPrecise temperature controlThermometer testing/calibrationErbium lasersTurbine blade
The invention provides a test system and method for a turbine blade integrated thin film temperature sensor, which solves the problem that the existing turbine blade integrated thin film temperature sensor cannot adopt an industrial thermocouple temperature measurement calibration mode. The system comprises a heating box, an instantaneous heating unit, an imaging unit, a standard thermocouple, a check meter and a control unit, wherein the instantaneous heating unit comprises a laser, a condensation unit and a rotary table; the condensation unit is located outside the observation opening in the side wall of the heating box and on an emergent light path of the laser; the condensation unit is arranged on the rotary table; the imaging unit is arranged outside the observation opening of the heating box; the number of the standard thermocouples is equal to that of the thin film temperature sensors on the turbine blade to be measured, and the positions are in one-to-one correspondence; the thin film temperature sensor and the standard thermocouple are respectively connected with the check meter; the control unit controls the emergent energy of the laser and is connected with the rotary table; and the control unit compares the temperatures obtained by the thin film temperature sensor and the standard thermocouple, and judges whether the performance of the thin film temperature sensor is qualified or not.
Owner:XIAN XIANGXUN TECH
Failure reminding method and system and air conditioner
ActiveCN108151230AAvoid life impactImprove experienceMechanical apparatusSpace heating and ventilation safety systemsComputer equipmentDisplay device
The invention provides a failure reminding method, a failure reminding system, an air conditioner, computer equipment and a computer readable storage medium. The failure reminding method includes thesteps of judging whether the air conditioner has a failure; judging whether the air conditioner is in a startup mode or not when the air conditioner has a failure; and according to judging results, controlling a display device of the air conditioner to carry out failure reminding according to corresponding display modes. After it is detected that the air conditioner has a failure, failure reminding is carried out by the display device according to the corresponding display modes and the on-off state of the air conditioner, so that the problems that in relevant technologies, failure reminding cannot be carried out after the air conditioner is turned off, and consequently a user cannot find failures in time and cannot repair the air conditioner in time are solved; and failure reminding of different modes can be provided according to the on-off state of the air conditioner, so that the problem that in relevant technologies, a failure indicator lamp flickers all the time for reminding whenthe air conditioner has a failure and consequently lives of users are affected is solved, and the user experience is improved.
Owner:GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
Filtration device at water outlet of sluice
The invention discloses a filtration device at a water outlet of a sluice. The filtration device comprises a suspending plate which is fixedly connected to the top of a case through a connecting plate mounted on the bottom of the suspending plate; a diesel engine is fixedly mounted on the top of the case; a drive tooth disc is arranged on the output shaft of the diesel engine in a sleeved manner; the drive tooth disc is in transmission connection to a driven gear in an inner cavity of the case through a chain which is arranged on the drive tooth disc in the sleeved manner; the driven gear is movably connected to the inner wall of the case through a mounting shaft which is welded on the side surface of the driven gear; the side surface, away from the mounting shaft, of the driven gear is welded with one end of a rolling wheel movably mounted on the inner wall of the case; and the surface of the rolling wheel is fixedly connected to the top end of a filter screen. The filtration device at the water outlet of the sluice disclosed by the invention has the characteristics of being high in extension and retraction speed and clearing impurities in water conveniently, and further has a self-cleaning function, so that the problem that garbage and water plants in existing river drift along the river and are difficult to clear is solved.
Owner:张焕梅
Method for testing output switching capability of power supply units of smart rack
InactiveCN104932294AReduce discharge voltageAvoid life impactProgramme control in sequence/logic controllersEngineeringHuman power
The invention discloses a method for testing the output switching capability of power supply units (PSU) of a smart rack. Scripts are compiled in the expect language, a rack manage controller adjusts the voltage threshold from DC to AC, the threshold is lower than the present DC voltage, and the condition for automatically switching to AC output is met. After switching, a normal threshold is recovered, power output of the PSU is switched back to DC, so that repeated test in the next step can be carried out. The method is rapid, convenient, easy to operate and capable of avoiding manual mistakes, and can be used in the RACK to automatically test the output switching capability of power supply units for a long time, the testing accuracy and stability can be effectively ensured, test can be carried out under the unmanned on duty state, and labor and time are saved.
Owner:LANGCHAO ELECTRONIC INFORMATION IND CO LTD
Inside-wind tunnel water tank push plate type wave generation system and wave generation method
ActiveCN112649174AAvoid dependenceEasy maintenanceAerodynamic testingHydrodynamic testingElectric machineClassical mechanics
The invention discloses an inside-wind tunnel water tank push plate type wave generation system and wave generation method. The wave generation system comprises a wave generator main bearing mechanism, a wave generator electric actuating mechanism, a push rod shaft, a servo control cabinet, a computer and a test area wave height sensor; first guide pairs are fixedly installed on two side walls of a water tank; a push plate is arranged in the water tank; the push plate is fixedly connected to the bottom of a main sliding table beam; the two ends of the main sliding table beam are in sliding connection with the first guide pairs respectively; second guide pairs are fixedly installed on the two side walls of a unit body; a transmission mechanism in the unit body is connected with a second sliding table; the second sliding table is connected with the second guide pairs in a sliding mode; and a motor connected with the transmission mechanism is arranged at one end of the unit body located on the outer side of the water tank. A wave generator is divided into the inner part and the outer part of the water tank, so that electrical and high-precision transmission mechanisms are positioned on the outer side of the water tank, the influence of moisture and water on the service life of the equipment is avoided, the maintenance of experimenters is facilitated, the dependence on a high-protection-level motor is avoided, and the input cost is reduced.
Owner:DALIAN UNIV OF TECH
Vacuum vessel switching core used by on-load tap-changer
ActiveCN101651029BEasy to tapImprove electrical lifeVariable inductancesHigh-tension/heavy-dress switchesElectricityTap changer
Owner:SHANGHAI HUAMING POWER EQUIP CO LTD +1
Tire vulcanization equipment
PendingCN114179409AAvoid shortened service lifeExtended service lifeTyresVulcanizationMechanical engineering
The invention relates to the field of tire vulcanizing machines and rubber vulcanizing devices, in particular to tire vulcanizing equipment which comprises a mold assembly, a ring seat assembly arranged in the mold assembly, a cylinder barrel assembly for supporting the ring seat assembly, a sealing cover for sealing gas in the mold assembly and a driving part. A rotating shaft for driving the gas circulating fan to rotate is arranged in the cylinder barrel assembly, the driving part drives the rotating shaft to rotate, and the sealing cover separates the driving part, so that high-temperature and high-pressure gas in the mold assembly cannot lose the driving part, and the service life of the driving part is prolonged.
Owner:HIMILE MECHANICAL SCI & TECH (SHANDONG) CO LTD
Multi-drum constant-speed constant-tension hydraulic windlass
The invention discloses a multi-drum constant-speed constant-tension hydraulic windlass which comprises a rope storage drum, a large friction drum, a small friction drum and a power source for driving the large friction drum. The rope storage drum and the small friction drum are arranged coaxially, steel wire ropes on the large friction drum and the small friction drum are both wound in a single layer to realize constant-tension output, and a transmission mechanism used for keeping the large friction drum and the small friction drum to rotate at the same linear speed is arranged between the same. The multi-drum constant-speed constant-tension hydraulic windlass is simple and compact in structure, small in size and capable of realizing constant-tension output of the steel wire ropes and guaranteeing stationary motion of loads in a steel wire rope unwinding process.
Owner:ZHEJIANG NOWVOW MECHANICAL & ELECTRICAL
Steel coil feeding and speed controlling device of full-automatic uncoiler
Owner:ZHEJIANG JINGGONG SCI & TECH
Thermodynamic coupling test device for simulating high-temperature service environment of aero-engine
The invention discloses a thermodynamic coupling test device for simulating a high-temperature service environment of an aero-engine, and relates to the technical field of thermal barrier coating service environment experiment devices, the thermodynamic coupling test device comprises an experiment table, the experiment table is provided with a heating assembly, a cooling assembly and a force application assembly, and the force application assembly is used for fixing two ends of a workpiece and applying axial force to the workpiece; the workpiece comprises a heating surface and a cooling surface, the heating assembly is used for heating the heating surface of the workpiece, and the cooling assembly is used for cooling the cooling surface; the workpiece is fixed to the force application assembly, then the heating end of the heating assembly is aligned with the heating surface of the workpiece for heating, and the cooling end opening of the cooling assembly is aligned with the cooling surface of the workpiece for cooling, so that a temperature gradient is formed between the heating surface and the cooling surface of the workpiece, and meanwhile, the force application assembly is used for applying alternating stress to the workpiece; the service environment of an actual aero-engine can be fully simulated, and the accurate failure process of the thermal barrier coating in the high temperature gradient and alternating stress state is obtained.
Owner:BEIHANG UNIV
Method and device for managing application programs
ActiveCN106598202AReduce the temperatureAvoid life impactPower supply for data processingProgram loading/initiatingHigh energyEngineering
The invention relates to a method and device for managing application programs, and belongs to the technical field of computers. The method comprises the steps of monitoring whether an energy consumption value of a terminal is greater than a default energy consumption threshold or not; obtaining target application programs which cause the condition that the energy consumption value is greater than the default energy consumption threshold when the energy consumption value is greater than the default energy consumption threshold; gathering the target application programs to a specific desktop folder; and carrying out one-click removal operation for the specific desktop folder to limit energy consumption of the target application programs. According to the method and the device, the problem of relatively high energy consumption of the terminal is solved and the energy consumption of the terminal is reduced. The method and the device are used for management of the application programs.
Owner:BEIJING XIAOMI MOBILE SOFTWARE CO LTD
Grid fault recovery control method for electric generator
ActiveCN103904969ARealize flexible failoverSuppression of electromagnetic torque rippleElectronic commutation motor controlVector control systemsUltrasound attenuationGrid fault
The invention discloses a grid fault recovery control method for an electric generator. The method includes the steps that in the grid fault recovery stage, a rotor current instruction vector is switched to the rotor current instruction vector in the grid fault recovery stage so as to restrain electromagnetic torque pulsation, and meanwhile DC magnetic flux attenuation is accelerated; after being switched out of the grid fault recovery stage, the rotor current instruction vector is switched to the rotor current instruction vector in the grid normal operating stage and the rotor current instruction vector in the reactive power supporting stage; when the rotor current instruction vector in the grid fault recovery stage is calculated, the rotor current instruction vector and a stator current vector are made to be collinear first, then the norm of the rotor current instruction vector in the grid fault recovery stage is obtained, next the norm is substituted into a formula for calculation, and then the rotor current instruction vector in the grid fault recovery stage is obtained. Through the method, the electromagnetic torque pulsation is restrained, switching of flexible faults of a double-fed motor is achieved, and the reliability of a mechanical system is enhanced; because the attenuation of transient DC magnetic flux is accelerated, recovery of power output can be accelerated, the risk that higher electrodynamic potential is inducted on the rotor side under the condition of repeated faults can be avoided as far as possible, rotor currents are limited, and safe operation of a rotor current transformer is guaranteed.
Owner:ZHEJIANG UNIV
Multi-functional table lamp
InactiveCN108180409AExtended service lifeImprove cooling effectLighting support devicesLighting heating/cooling arrangementsEngineeringAir cavity
The invention relates to a multi-functional table lamp. The multi-functional table lamp comprises a supporting pillar, and a lampholder is hinged to the lower end of the supporting pillar; an air cavity is formed in the supporting pillar; the lower end of the air cavity is sealed; the upper end of the air cavity is open; a piston is arranged in the air cavity in a sliding manner; a push rod is connected to the upper end face of the piston; an adapter rod is hinged to the upper end of the push rod; the adapter rod is rotatably mounted at the upper end of the supporting pillar; a bulb mounting plate is fixedly connected to the end, away from the push rod, of the adapter rod; an annular air sac is mounted on the outer side of the push rod in a sleeving manner; the annular air sac is providedwith air inlet-exhaust hole groups; through holes are formed in the positions, corresponding to the air inlet-exhaust hole groups, of the side wall, facing the folded bulb mounting plate, of the air cavity; the upper end of the annular air sac is fixed to a partition; the partition is fixed in the air cavity; and the lower end of the annular air sac is fixed to the piston. According to the multi-functional table lamp, heat of a bulb and the bulb mounting plate can be well dissipated, the service life of the bulb is prevented from being affected by high temperature, and the service life of thetable lamp is prolonged.
Owner:XIAOGAN GUANTIAN TECH INFORMATION CONSULTING
Desulfurization and denitrification device based on adjusting type active particle exciters
The invention discloses a desulfurization and denitrification device based on an adjusting type active particle exciters. The desulfurization and denitrification device comprises an absorbing tower, wherein the absorbing tower is internally and sequentially separated into an absorption liquid pond area, a fume oxidization and injection area, a spray area and a demisting area from bottom to top; the fume oxidization and injection area is formed by a plurality of the adjusting type active particle exciters which are horizontally arranged in a tangent circle way along the wall of the absorbing tower; each adjusting type active particle exciter comprises an outer tube, an inner tube, a grounding electrode, a high-voltage electrode, an adjuster and the like; and each adjuster is used for adjusting the axial motion of each inner tube. The desulfurization and denitrification device disclosed by the invention is high in contaminant removal efficiency and low in system energy consumption and can be used for efficiently generating the active particles in a low-temperature environment, enhancing the effective utilization rate of the active particles, sufficiently oxidizing the contaminants and simultaneously desulfurizing and denitrifying the low-temperature fume absorbed by the contaminants. According to the desulfurization and denitrification device, when the fume passes through the absorbing tower, NO and SO2 which are contained in the fume can be simultaneously oxidized and absorbed, so that the purposes of simplifying equipment, reducing occupied area and integrating high-efficiency desulfurization and denitrification of the low-temperature fume are achieved.
Owner:SOUTH CHINA UNIV OF TECH
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