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68results about How to "No fluctuations" patented technology

On-line soot blowing method and on-line soot blowing device for coal water slurry boiler

The invention discloses an on-line soot blowing method and an on-line soot blowing device for a coal water slurry boiler. The bottom of a convection heating surface of the coal water slurry boiler is provided with a soot blowing device along the smoke circulating direction, the soot blowing device is provided with over two nozzles with oblique upward outlets along the smoke circulating direction, the soot blowing device can eject high-pressure steam or compressed air through the nozzles along the smoke circulating direction in turn, the high-pressure steam or the compressed air blows the inside of the heating surface of the boiler section by section in order and compels large granules deposited in a smoke passage of the heating surface of the boiler to elevate again due to the impact of strong airflow, and meanwhile the granules collide with the metal wall of the heating surface so that the dust adhered to the metal wall drops due to the action of an external force and is discharged along with the smoke together to achieve the soot blowing effect. The method and the device have the advantages of simple required equipment, low operating expense, high efficiency and low manpower intensity.
Owner:株洲市蓝宇热能科技研制有限公司

Water circulation heating dry-state dummy

The invention discloses a new dry-state dummy device. The device mainly comprises a skeleton, joints, a water circulation heating system and a control system, wherein the physical dimensions of the skeleton and the joints of the human normal body can be stimulated from an appearance view, and the movement ability of the three joints including shoulders, the hip and the knee can be used as a main medium which can perform heat exchange with the environment. The water circulation heating system is of a core structure, and a mixed proportion of cold water and hot water with constant temperature can be controlled so that mixed water flows in a circulating pipeline; the heat energy is released to the environment under the assistance of the skeleton and the joints; the control system can be used for measuring the flow of the hot water and the cold water and the skin surface temperature of the dummy in real time; the flow of the hot water and the cold water and the skin surface temperature of the dummy can be converted into heat dissipating capacity by calculation, and the water circulation heating system can be assisted to control the temperature. The water circulation heating dry-state dummy can be applied to a calibration measurement instrument for simulating the human body temperature change and evaluating the indoor space temperature comfort. Compared with the traditional electric heating dummy, the water circulation heating dry-state dummy has the main advantages that the dummy can be adjusted in a cold and hot wide temperature area and is relatively easy and convenient to operate.
Owner:BEIHANG UNIV

Concrete mixer

InactiveCN107363994AMix the concrete evenlyGood quality concreteMixing operation control apparatusCement mixing apparatusPipingCement
The invention provides a concrete mixer and relates to the technical field of concrete equipment. The concrete mixer comprises a foundation; the top of the foundation is fixedly provided with two bases; and the tops of the bases are fixedly provided with mixing jugs. Due to the match of a water pump, a water inlet pipe, a water distribution pipe, a cleaning pipe, a water spray tray, a spray head, a water transition block and a mixing rod, the mixing rod can drive the cleaning pipe to rotate inside the water transition block while rotating, and the water spray tray can synchronously rotate with a rotating rod; after being adsorbed into the water spray tray by the water pump, water is sprayed out of the spray head to ensure that the inner walls of the mixing jugs can also be synchronously cleaned during mixing operation of the concrete mixer, so that a material such as cement is prevented from being stuck to the inner walls of the mixing jugs; and after the concrete mixing operation is ended, the inner walls of the mixing jugs can be kept clean, cleaning the insides of the mixing jugs again by a worker can be avoided, and time and labor are saved.
Owner:钟晓芳

Dynamic reactive power priority based automatic switching method of capacitor of wind power plant

The invention relates to a dynamic reactive power priority based automatic switching method of a capacitor of a wind power plant, belonging to the technical field of voltage-reactive power automatic adjustment of a wind power plant. The method comprises the following steps: determining a total reactive adjusting variable according to the bus voltage of a point of common coupling, obtained from a monitoring system of the wind power plant and upper and lower values obtained from a main dispatching station; according to the current reactive power value, reactive power up adjustable range and reactive power down adjustable range of an SVG (Static Var generator) and the total reactive adjusting variable, determining the adjusting variable of the SVG and whether to switch the capacitor; and finally determining a capacitor switching scheme according to the operation status, daily switching frequency limit, monthly switching frequency limit and capacity of the capacitor. According to the method, through giving a use priority to the reactive power adjusting capability of the SVG, setting the daily switching frequency limit and monthly switching frequency limit of the capacitor, the switching frequency of the capacitor can be reduced largely and the the operation safety and reliability of the wind power plant can be improved.
Owner:STATE GRID CORP OF CHINA +2

Power distribution method, base station, user equipment and system

ActiveCN102781083AGood resource allocation and throughputStable reception performancePower managementDistribution methodPower level
The invention discloses a power distribution method, a base station, user equipment and a system and belongs to the field of communication. According to the method, periods are set for a downlink power distribution scheme, transmission power levels of all subframes in all periods are set, and periods of adjacent areas of an area are equal to or in an integral multiple relationship with the period of the area, so that the base station sends downlink signals to subframes at the same position in two adjacent periods by using power of the same level, power levels of interference signals of adjacent areas are stable when the user equipment (UE) receives downlink signals at subframes at the same position in all periods, the UE is free from fluctuation phenomena when channel quality indication is measured, the good resource allocation effect and the good throughput per hour are achieved, and simultaneously, the stable receiving performance of the UE at subframes at the same position in all periods is guaranteed.
Owner:HUAWEI TECH CO LTD

Method for sulfurizing shift catalyst in process of preparing methanol from coal

The invention discloses a method for sulfurizing a shift catalyst in a process of preparing methanol from coal. The method comprises the following steps: displacing a shift converter and a nitrogen heating system, and heating a catalyst bed by adopting pure nitrogen; performing initial sulfurization after heating: starting hydrogen addition to increase the hydrogen concentration to 25 percent by virtue of purge gas, starting supplementing CS2, and performing initial sulfurization for 14 to 18h; then performing main sulfurization: increasing the addition amounts of the purge gas and the CS2, and raising the temperature of the catalyst bed for main sulfurization; performing final sulfurization after main sulfurization is continuously performed for 12 to 14h: increasing the addition amounts of the purge gas and the CS2, and when results obtained by continuously analyzing the volume concentration of H2S at an outlet for three times all reach 50 to 65g / m<3>, ending sulfurization of the catalyst; performing cooling treatment, and ending the whole sulfurization process. According to the method, the phenomenon of overheat caused by drastic heat release reaction of pure hydrogen in the heating sulfurization process of the catalyst can be avoided, so that reaction of the bed can be steadily performed.
Owner:HENAN LONGYU COAL CHEM

Device and process for preparing chalcogenide infrared glass material and method of device

The invention provides a device for preparing a chalcogenide infrared glass material, and relates to the field of chalcogenide glass preparation, mainly aiming at reducing stripes in the chalcogenide infrared glass material through the device provided by the embodiment of the invention. The mainly adopted technical scheme is as follows: the device for preparing the chalcogenide infrared glass material comprises a frame, a worktable, a first lifting driving device, a melting furnace, a lower furnace door and a positioning device, wherein the worktable is mounted on the frame; the first lifting driving device is used for driving the worktable to move up and down; the melting furnace is rotatably mounted on the worktable; the melting furnace is provided with a furnace chamber and a first opening is formed in the lower end of the melting furnace; the lower furnace door covers the first opening and is detachably connected with the melting furnace; the positioning device is detachably connected with the lower furnace door, and used for positioning the lower furnace door and keeping the position of the lower furnace door unchanged when an external ampoule bottle is quenched. The device is mainly used for preparing the chalcogenide infrared glass materials.
Owner:CHINA BUILDING MATERIALS ACAD

Multilayer printed circuit board and manufacturing method thereof

The purpose of the present invention is to provide a multilayer printed circuit board which mitigates the problems of "warping," "twisting" and "changing size" seen in printed circuit boards obtained by the conventional build-up method, and to provide a manufacturing method thereof. In order to achieve this purpose, a multilayer printed circuit board is adopted which is provided with two more build-up wiring layers on both sides of a core substrate, wherein said core substrate is provided with an inner layer circuit on both sides of the skeletal material-containing insulation layer, the insulation layer being 150μm thick or less, wherein the X-Y direction linear expansion coefficient of the skeletal material-containing insulation layer is 0ppm / °C-20ppm / °C, a first build-up wiring layer and a second build-up wiring layer provided on both sides of the core substrate comprise a copper circuit layer and an insulating resin layer having a X-Y direction linear expansion coefficient of 1ppm / °C-50ppm / °C, and the relation holds that the ratio of the value of the X-direction linear expansion coefficient (Bx) and the value of the Y-direction linear expansion coefficient (By) of the insulating resin layer is 0.9-1.1.
Owner:MITSUI MINING & SMELTING CO LTD

Voice coil motor for respiratory support equipment, switch valve and respiratory support equipment

The invention provides a voice coil motor for respiratory support equipment, a switch valve and the respiratory support equipment, the voice coil motor comprises a shell, a motor shaft is arranged in the middle of the shell, a flexible elastic part is arranged at the upper part of the motor shaft, and a guide part is arranged at the lower part of the motor shaft and is used for ensuring that the motor shaft does linear motion; and a coil support is arranged outside the guide part, a coil is fixed to the coil support, and a permanent magnet is arranged outside the coil support. The voice coil motor provided by the invention is provided with the flexible elastic piece to provide resistance and support for the motor shaft, and is also provided with the linear bearing, the motor shaft of the voice coil motor is ensured to do linear motion without fluctuation through the combined action of the flexible elastic piece and the linear bearing, and the permanent magnet in the voice coil motor is arranged on the outer side of the coil bracket. Compared with an existing voice coil motor with a permanent magnet on the inner side of a coil, the possibility that the motor shaft is magnetized by the permanent magnet is reduced, and the linear motion stability of the motor shaft is improved.
Owner:HUNAN MICOME ZHONGJIN MEDICAL SCI & TECH DEV CO LTD +1

Adjustable carton packaging machine convenient to convey

ActiveCN113387011ANo fluctuationsConducive to adaptive delivery packaging effectWrapper twisting/gatheringBundling machine detailsAdhesive beltCarton
The invention discloses an adjustable carton packaging machine convenient to convey, and relates to the technical field of carton packaging. The adjustable carton packaging machine comprises a rack, wherein a conveying roller and a carton sealing device are arranged on the rack, the conveying roller is used for conveying a carton located on the conveying roller, the carton sealing device is used for sealing the carton through an adhesive tape, an opening is formed in the middle of the rack, a conveying device is arranged at the bottom of the rack at the opening, and the conveying device comprises a driving mechanism and a clamping mechanism. According to the adjustable carton packaging machine, when the carton moves to the position between two clamping blocks in the same group located above the opening, a conductive spring is electrified, the conductive spring is electrified and contracted, two sliding frames are pulled to be close to each other, then the two clamping blocks form a clamping effect on the carton, so that the carton is prevented from fluctuating in the transportation process, meanwhile, the carton packaging machine can be effectively adapted to cartons with different specifications and the length smaller than the initial distance between the two clamping blocks, and the adaptive conveying and packaging effect on express cartons with different specifications can be formed.
Owner:南通市通州区茂润包装制品有限公司

Testing method and device of audio communication system

InactiveCN101247622BObjectively reflect the status quo of product qualityReflect the status quo of product qualitySupervisory/monitoring/testing arrangementsData switching networksCommunications systemAudio frequency
The invention provides a test method and a device for an audio communication system, the audio communication system includes a first communication terminal and a second communication terminal, wherein, the method includes: first step, a first video signal pre-produced is imported into the first communication terminal under the condition that the first communication terminal is communicated with the second communication terminal; second step, frequency and / or amplitude of a second video signal are / is imported by the second communication terminal; third step, the frequency and / or the amplitude between the first video signal and the second video signal are / is compared with each other, and frequency different and amplitude different of both are judged whether to be in the range of pre-established inaccuracy or not, the audio communication system is decided to normally work if the difference is in the range of the pre-established inaccuracy; else, the video communication system is decided to work abnormally. The device includes: a signal import module, a signal export detection module and a comparison module. The invention can eliminate the inaccuracy of a subjective test in a prior art depended on man-made subjective feeling.
Owner:ZTE CORP

Channel synthesis method of m-triamino trinitrobenzene

ActiveCN109824521AHas explosive propertiesFlammable and explosiveOrganic compound preparationAmino compound preparationRetention timeSynthesis methods
The invention discloses a channel synthesis method of m-triamino trinitrobenzene. The channel synthesis method of m-triamino trinitrobenzene comprises following steps: 1, a toluene solution of m-trichloro trinitrobenzene is prepared as an initial material; 2, an ammonification reagent is prepared; 3, the initial material and the ammonification reagent are pumped into a channel type reactor throughtwo inlets of the channel type reactor using metering pumps synchronously; 4, the initial material and the ammonification reagent are mixed and reacted in the channel type reactor, wherein reaction time retention time is controlled to be 10 to 1000s; 5, an obtained reaction product is delivered into a collector through a reaction channel, thermal insulation reaction is carried out for 0 to 10h, and mother liquor filtering, filter cake washing and drying are carried out based on routine methods so as to obtain a target product. According to the channel synthesis method, utilization of the highefficiency heat and mass transfer capacity of the channel type reactor is adopted to realize synthesis technology accurate control, parameter fluctuation is reduced, conversion rate is close to 100%under optimized conditions, the particle size of the obtained m-triamino trinitrobenzene product ranges from 10 to 60<mu>m, and the peak value particle size ranges from 15 to 30<mu>m.
Owner:INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS

Process for recovering and purifying annealing furnace exhaust gas and device thereof

The invention discloses a process for recovering and purifying annealing furnace exhaust gas and a device thereof. The process comprises the following steps: (1) carrying out condensation treatment of the annealing furnace exhaust gas, and collecting first exhaust gas; (2) carrying out first filtration treatment of the first exhaust gas, and collecting second exhaust gas; (3) supplementing nitrogen gas to the second exhaust gas, to obtain third exhaust gas; (4) carrying out second filtration treatment of the third exhaust gas, and collecting fourth exhaust gas; (5) successively carrying out heat treatment and deoxidation treatment of the fourth exhaust gas, and collecting fifth exhaust gas; and (6) carrying out adsorption treatment of the fifth exhaust gas, and collecting purified gas. Through the process and the supporting device, dust, emulsions, rolling oil, oxygen gas and other impurities in the annealing furnace exhaust gas can be effectively removed, the final purified gas meets protection gas requirements and can directly enter an annealing furnace for recycling, and the process and the device thereof have remarkable economic benefits and social environmental-protection benefits.
Owner:LANGFANG GUANGHUI GAS EQUIP

Pressure relief valve, respiratory support equipment air path and respiratory support equipment

The invention provides a pressure relief valve, a respiratory support equipment air path and respiratory support equipment. The pressure relief valve comprises a valve body, wherein the valve body is of a hollow structure provided with an air inlet and a pressure relief opening, a diaphragm is arranged on the lower portion of the valve body, the air inlet communicates with the pressure relief opening through a space above the diaphragm, and a driving device is arranged on the lower portion of the diaphragm and used for driving the diaphragm to move up and down. The air inlet and the pressure relief opening are formed in the upper portion of the pressure relief valve at the same time, control over the air flow is achieved by controlling the distance between the diaphragm and the pressure relief opening, the pressure relief valve is used for being connected with a branch of the respiratory support equipment air path and connected with a main path of the air path through one air inlet, the air resistance of the respiratory support equipment air path can be reduced, pressure control is achieved by controlling the pressure relief magnitude of the pressure relief valve on the branch, two or more pressure relief valves are combined for use in the air path according to use requirements, the pressure control range is expanded, and the pressure control precision is improved.
Owner:HUNAN MICOME ZHONGJIN MEDICAL SCI & TECH DEV CO LTD

Pressure reducing type water supplying float valve of cold water tank in generator

The cool water tank filling water ball cock in the generator with the decompressing function is disclosed. The valve can push the steel ball by the floating ball driving the lever joining pole, so the supply water of the water tank can be controlled, the supplied water enters the water tank thought the decompressing room decompressing, because the supplied water flow can't form the big fluctuate to the liquid face of the water tank, the controlling of the supplying water is accurate, at the same time, the steel ball is adopt as the door body, the airproof effect is good, the phenomena of elevation ceaselessly because of the bad airproof can be avoided. The main component of the said valve is composed of the valve body, the floating ball, the connecting pole, the pushing poll and the steel ball, the frame is brief, the failure occurs rarely.
Owner:刘敬善

Efficient environmental-friendly paint spraying equipment

The invention discloses efficient environmental-friendly paint spraying equipment and belongs to the technical field of paint spraying. The efficient environmental-friendly paint spraying equipment comprises a mounting box, wherein a working box is connected to the top of the mounting box, a liquid storage tank is connected in the working box, a pressurizing pump is connected to the top of the liquid storage tank, a driving shaft is connected to the driving motor, a reciprocating lead screw and a first gear are connected to the driving shaft, a lifting plate is connected to the reciprocating lead screw, a paint spraying mechanism is arranged on the lifting plate, and the liquid storage tank communicates to the paint spraying mechanism. A turnplate is rotatably mounted on the top of the mounting box, a driving cavity is formed in the turnplate, a first gear ring is connected in the driving cavity, the first gear is engaged to the first gear ring, a rotating shaft is rotatably connectedto the turnplate, a placing table and a second gear are connected to the rotating shaft, a second gear ring is connected to the top of the mounting box, and the second gear ring is engaged to the second gear. The efficient environmental-friendly paint spraying equipment sprays a workpiece comprehensively and uniformly by matching an up-down moving nozzle with the rotating placing table, so that paint coagulation caused by single point spraying is prevented while steps are saved.
Owner:裘永军

Assembly-type non-adhesive floorboard that tightly contacts floor and method for tightly installing floorboard using same

ActiveCN107407096AAvoid liftingEffectively clings and securesCovering/liningsFlooringAdhesiveCoupling
The present invention relates to an assembly-type non-adhesive floorboard that tightly contacts the floor and can be easily installed, dismantled, and maintained and a method for tightly installing a floorboard using same, the floorboard comprising: a base panel made of an elastic material; a surface material, which is made of a material that is harder than the base panel, and which is laminated on the upper surface of the base panel; and an anti-slip sheet laminated on the lower surface of the base panel, wherein a protrusion and a coupling groove, to which the protrusion is coupled, are formed on both sides of the base panel such that the floorboard can tightly contact the floor firmly while facilitating installation and dismantling thereof. The present invention is advantageous in that, when floorboards are assembled by coupling protrusions to the coupling grooves and are placed on the floor of a building, anti-slip panels are forced against the floor; the base panels are made of calcium carbonate boards, which are elastic, such that, even if the floor is not completely level but is curved, the base panels are deformed appropriately and the entire anti-slip panels make a completely tight contact with the floor without detaching upward from the floor; accordingly, the assembly-type floorboards can be effectively forced against and fixed to the floor without having to use an adhesive, thereby facilitating installation and dismantling thereof; and, during heating, heat is effectively transferred from the floor to upper surfaces, and no jolt occurs even when the floor is uneven.
Owner:HANSSEM +1
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