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4173results about How to "Compact layout" patented technology

Tilt rotor aircraft adopting parallel coaxial dual rotors

The invention relates to a tilt rotor aircraft adopting parallel coaxial dual rotors, which comprises a fuselage, wings, an empennage, a pitch control scull system, a landing gear, a power and fuel system, a transmission system, a rotor system, a rotor nacelle and a tilt system, wherein the wings are arranged at the center section of the fuselage; the empennage and the pitch control scull system are arranged at the tail of the fuselage; the landing gear is positioned at the belly of the fuselage; the power and fuel system is arranged inside the center section of the fuselage and is connected with the rotor system and the pitch control scull system through the wings and the transmission system in the fuselage; the rotor system is arranged on the rotor nacelle at the tip of the wings; partial wing which is fixedly connected with the rotor nacelle and simultaneously can tilt is arranged at the inner side of the rotor nacelle; and the tilt system is arranged in the wings and is connected with the rotor nacelle and the partial wing which can tilt. The tilt rotor aircraft is mainly characterized by adopting the pitch control scull system, the parallel coaxial dual rotors and the partialwing which can tilt to realize flight status transformation and conventional taxiing and landing, thereby improving the forward speed and the propulsive efficiency.
Owner:BEIHANG UNIV

Bidirectional walking mechanism for crossed track shuttle

The invention relates to the field of logistics equipment, in particular to a bidirectional walking mechanism for a crossed track shuttle. The bidirectional walking mechanism is composed of a shuttle body, lifting mechanisms, a longitudinal walking mechanism, a horizontal walking mechanism, an electric appliance bin and an electrical system, and the like. The shuttle body is the foundation of all mechanisms, two sets of the lifting mechanisms are arranged in the shuttle body in a staggered mode and are perpendicular to each other, the longitudinal walking mechanism and the horizontal walking mechanism are arranged on the lifting mechanisms respectively, the electric appliance bin is arranged on the shuttle body, and the electrical system is arranged in the electric appliance bin. The bidirectional walking mechanism is used as a waling device of the crossed track shuttle and has the advantages of being compact in structure, unlimited by the size of the shuttle body, good in stability, and suitable for high speed application occasions. The crossed track shuttle comprising the bidirectional walking mechanism is used in a logistics system, and can form intensive storage systems of various types, and the bidirectional walking mechanism has the advantages of being small in occupied area, compact in goods arrangement, flexible in operation, and high in operation efficiency.
Owner:QILU UNIV OF TECH

Tilt-rotor plane operated and propelled by thrust scull and slipstream rudder

A tilt rotor aircraft adopting a thrust tail rotor and a slipstream rudder for operation and propelling and a design of two parallel rotary wings and common pneumatic distribution comprises an airframe, wings, an empennage, a system of thrust tail rotor and slipstream rudder, an undercarriage, a power-fuel system, a transmission system, a rotary wing system, a rotary-wing nacelle and a tilt rotor system of the rotary-wing nacelle. The aircraft adopts the system of the thrust tail rotor and slipstream rudder to operate the VTOL and the pitching and drifting of the forward flight; the system comprising the thrust tail rotor, an elevator and a rudder is arranged on the empennage; a tilting wingtip appears as a small-area wing which is arranged on the outside of the rotary-wing nacelle and rotates together with the rotary-wing nacelle; the plane shape of the tilting wingtip appears as a trapezoid of leading edge sweepback and trailing edge sweepforward and the aspect ratio is 1.5 and the area of the tilting wingtip occupies about 15 to 20 percent of the whole wing area and the tilting wingtip is just integrated with the appearance of the rotary-wing nacelle and fixedly connected with a nacelle bevel gear box. The tilt rotor aircraft is a novel aircraft type with the development potential and prosperous prospect.
Owner:BEIHANG UNIV

Low-energy-consumption low-carbon-emission economical energy-saving urban sewage treatment method

The invention discloses a low-energy-consumption low-carbon-emission economical energy-saving urban sewage treatment method. The method comprises the steps that: 1, the to-be-treated wastewater is collected by a sewage pipe network and then is filtered by lattices, and is lifted by a pump to enter a pulse water distribution pot of a novel efficient turn-back anaerobic biochemical pool (ABR); 2, the swage subjected to the treatment in step 1 flows into a circulation-flow biological oxidization pool; 3 the effluent water from the step 2 flows into an artificial reinforced biological contact oxidization pool reconstructed by a water body from natural tunnels and reservoirs; and 4, the effluent water from the step 2 or the step 3 flows into constructed wetlands. After the sewage is treated by the above steps, the most pollutants in the water are effectively removed and the treated effluent water reaches the standard first-grade A in GB 18918-2002 ''Discharge standard of pollutants for municipal sewage treatment plant''. The energy-saving sewage treatment purification process with low cost, low energy consumption, low carbon emission and low operating cost is particularly suitable for the sewage treatment in small towns or rural areas.
Owner:武汉昌宝环保工程有限公司

Antenna structure applied to mobile phone with metal rings and all-metal rear housing

The invention discloses an antenna structure applied to a mobile phone with metal rings and an all-metal rear housing. The antenna structure applied to the mobile phone with the metal rings and the all-metal rear housing comprises the all-metal rear housing, an antenna holder, an antenna pattern on the antenna holder, a connecting terminal of feeding points, the metal rings serving as an antenna loop and an antenna loop connector on the holder. The mobile phone with the metal rings and the all-metal rear housing comprises a total of three antennas, namely, a main antenna MAIN, an auxiliary antenna AUX and a GPS (Global Position System)/WLAN (Wireless Local Area Network) antenna. A radiation plate of the main antenna MAIN comprises radiation sheets and a metal ring. A feeding point of the main antenna is arranged on the radiation plate, and the radiation plate is in contact with the metal ring to divide the metal ring into a left end part and a right end part. A radiation plate of the auxiliary antenna AUX and the GPS/WLAN antenna comprises radiation sheets and a metal ring. The metal ring is divided into two parts by a grounding point. The antenna structure applied to the mobile phone with the metal rings and the all-metal rear housing is simple in structure, compact in layout and capable of greatly saving antenna space and achieving integrated design of the metal ring and the metal rear housing of the mobile phone to meet the special needs of appearance.
Owner:PULSE (SUZHOU) WIRELESS PRODUCTS CO LTD

Multifunctional test bed for electric wheel

The invention discloses a multifunctional test bed for an electric wheel. The test bed comprises a power measuring motor, an electric push rod, a loading motor, an electric wheel equipped with a hud motor, a rotary drum, a rotating speed torque sensor, a pressure sensor, a ball screw mechanism, a parent controler (computer), an A / D & D / A card, and a USB / CAN adapter, whrein, the computer controls the rotating speed of the power measuring motor through the D / A card according to experimental operating conditions, the computer dynamically controls vertical load which is applied by the loading motor to the electric wheel through the D / A card according to the experimental operating conditions, the computer controls torque of the electric wheel r which is equipped with the hud motor through the USB / CAN adapter according to the experimental operating conditions, and the pressure sensor and the rotating speed torque sensor send load, rotating speed and torque signals of the electric wheel to the computer through the A / D card and a serial port respectively. The multifunctional test bed for the electric wheel can automatically assess durability of the electric wheel without monitoring in thelaboratory and without arranging special experimenter to carry out road test, and has the advantages of saving manpower and material resources, providing rapid and accurate assessment and the like.
Owner:TONGJI UNIV

Large-torque magnetic suspension flywheel

The invention discloses a large-torque magnetic suspension flywheel, which can be used as an execution mechanism for attitude stabilization and attitude maneuver of spacecrafts such as a satellite, an earth observation platform and the like. The magnetic suspension flywheel mainly consists of a base, a sealing cover, a radial decoupling conical magnetic bearing assembly, a core shaft, a rotor assembly, a Lorentz force magnetic bearing assembly, a motor assembly, a sensor assembly and the like. The core shaft is positioned in the center of the wheel body, a stator assembly is positioned at theradial outer side of the core shaft, the rotor assembly is arranged at the radial outer side of the stator assembly, the rotor assembly consists of a wheel flange and a wheel hub, and the Lorentz force magnetic bearing assembly consists of a magnetic bearing stator part and a magnetic bearing rotor part; an adapter plate is connected with the core shaft, the stator assembly and a motor stator; and the sensor assembly consists of a sensor shell and a sensor. The components of the flywheel are arranged reasonably and compactly, the flywheel can be used for attitude stabilization of the spacecraft, and attitude maneuver of the spacecraft can be realized by using large control torque provided by gyroscopic effect of the magnetic suspension flywheel.
Owner:BEIHANG UNIV

Coal-fired fluidized bed micro oxygen rich combustion CO2 emission reduction method and system

The invention discloses a coal-fired fluidized bed micro oxygen rich combustion CO2 emission reduction method and a coal-fired fluidized bed micro oxygen rich combustion CO2 emission reduction system for solving the problem of low-cost CO2 emission reduction of an industrialized coal-fired boiler. A micro oxygen rich combustion mode using mixed gas of air, oxygen and recycled smoke as a combustion aid is adopted, wherein the mixed gas contains about 25 percent of oxygen, 30 to 40 percent of recycled smoke and the balance of air; and in the micro oxygen rich combustion mode, the concentration of the CO2 gas in the generated smoke is 30 to 40 percent, and the CO2 in the smoke is removed by adopting a physical adsorption technology. The invention also provides a system device for implementing the method. By considering oxygen making cost, energy consumption and optimal comprehensive effect of separating CO2 by physical adsorption and combining the micro oxygen rich concept and the circulating fluidized bed combustion technology, desulfuration, denitration, decarburization and zero pollution emission at lower cost can be realized. The invention has the advantages of good economic efficiency, simple process, low energy consumption, high automation degree in operation process and the like.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Automatic speed changing electric driven hub

The invention discloses an automatic speed-change electrical wheel hub, comprising a left wheel hub frame, a right wheel hub frame, a housing, a motor, a transmission shaft, a wheel, a brake device arranged on the transmission shaft, and a self-adaptive two-speed automatic speed-change assembly driven by the motor rotor via a transmission device. The transmission device is arranged in the intracavity of the motor stator. The automatic speed-change electrical wheel hub has the advantages that the motor transmission device is arranged reasonably, the consumption of the manufacture materials of the housing is lowered, the whole wheel hub has a compact size and a light weight, the manufacturing cost is reduced, and the invention can enable the output power of the motor and the driving status of vehicles to always be in an optimum matching status to achieve the balancing control of the driving moment of the vehicles and the synthesized driving resistance; the speed change can be operated automatically along with the change of the driving resistance by the self adaptive without cutting off the driving force, so that the invention is beneficial to the energy-efficiency of the vehicles and the mechanical power equipment, and can satisfy the usage under the conditions of mountain areas, hills and heavy loads; and the transmission of the invention has a light weight and a compact structure.
Owner:SOUTHWEST UNIVERSITY

Method and device for extracting lithium from lapidolite by chloridizing roasting method

ActiveCN101775505ALow melting pointReduce or inhibit precipitationRubidiumPotassium
The invention discloses a method and a device for extracting lithium, which is used for preparing lithium carbonate, from a lapidolite ore by a chloridizing roasting method. The method comprises the following steps of: firstly, mixing the lapidolite ore, calcium chloride and sodium hydroxide with a compound bonding agent for pellet fabrication; secondly, performing chloridizing roasting in a square-frame shaped track type roasting furnace; thirdly, leaching out soot dust by using solution containing sodium carbonate and potassium carbonate to ensure that potassium, sodium, rubidium and cesium enter the solution and convert the lithium into lithium carbonate; fourthly, filtering the mixture to obtain a lithium carbonate solid, and circularly using the filtrated mother liquor to leach out the soot dust; fifthly, when an alkali metal salt is close to be saturated, indirectly heating the filtrated mother liquor by using the residual heat of the gas in the roasting furnace to evaporate part of water; sixthly, passing CO2 into the filtrated mother liquor to perform carbonation; and seventhly, performing cooling crystallization to separate out a mixed salt of the sodium carbonate and the potassium carbonate, returning part of the mixed salt which is used as an auxiliary material mixed and roasted with lapidolite for cyclic utilization, using another part of the mixed salt as a carbonate reagent needed in dissolution, and using the rest part of the mixed salt as byproducts of the sodium carbonate and the potassium carbonate. The method has the advantages of high lithium recovery rate, good material comprehensive utilization, large equipment productivity, high production efficiency, small water consumption in the process and less wastewater discharge.
Owner:CENT SOUTH UNIV

Proton therapy system based on compact superconducting cyclotron

ActiveCN107596579ARealize radial movementGet in and out of bed easilyMagnetic resonance acceleratorsMedical devicesProtonFixed energy
The invention discloses a proton therapy system based on a compact superconducting cyclotron. The proton therapy system includes a superconducting cyclotron system, an energy selection system and a beam transportation system, a fixed treatment room subsystem and a rotary frame treatment subsystem; the fixed energy proton beam led out by the superconducting cyclotron in the superconducting cyclotron system can be a continuously adjusting proton beam of 70-200MeV via the energy selection system, so that the longitudinal adjustment of the range during the proton therapy of tumors can be met; thebeam is transmitted to the fixed treatment room subsystem and the rotary frame treatment subsystem via the beam transportation system; the superconducting cyclotron system, the energy selection system, the beam transportation system and a treatment head are subjected to cooperative control to realize the transverse expansion of the proton beam, so that the intensity modulation treatment of the tumor can be completed. According to the invention, the innovation is good, the practicability is high, the beam intensity of the superconducting cyclotron is adjustable, and the intensity modulation treatment can be realized; and the system has an extremely important promotion effect on the accuracy, effectiveness and high efficiency of tumor treatment of a patient.
Owner:HEFEI CAS ION MEDICAL & TECHNICAL DEVICES CO LTD +1

Coal tar heavy fraction suspension-bed hydrocracking method and system thereof

The invention belongs to the technical field of coal chemical industry, and provides a coal tar heavy fraction suspension-bed hydrocracking method. The method comprises the following steps: mixing raw materials of coal tar heavy fractions with a catalyst and a vulcanizing agent to form a uniform mixed material; vulcanizing the catalyst in the mixed material under the action of hydrogen; preheating the vulcanized mixed material, and then allowing the preheated material to enter a suspension-bed reactor for hydrocracking reaction; and fractionating the product from the suspension-bed reactor to finally obtain gaseous hydrocarbon, gasoline fractions, diesel fractions and tail oil. In the invention, by directly adopting the hydrocracking method with a coal tar heavy fraction suspension bed and a system thereof, the coal tar heavy fractions can keep light weight, and the yield of the fuel oil product hydrogenated by coal tar can be effectively increased; and the suspension-bed hydrogenation reactor has simple structure without a bed layer, thus causing no phenomena such as blockage, increased pressure drop, overtemperature and the like occurred on the reaction bed layer, and the reactor further has the characteristics of great operation flexibility, long operation cycle, being safe and stable, easy control and the like.
Owner:DALIAN UNIV OF TECH

Process for preparing potassium nitrate by double decomposition method

The invention provides a metathesis method for preparation of potassium nitrate. After raw potassium chloride, ammonium nitrate and craft water finish their preparation at a certain ratio, they are input into vacuum cooling crystallizer. Then potassium nitrate is separated by crystallization and grows up. The crystallized liquid thickens by the thickening apparatus and continuously separates potassium nitrate as aim products by centrifugal machine. After the separated mother liquid exchanges heat with the reacting liquid, it is input into natural circulation evaporator to concentrate, adopting backward feed and dual effect concentration with constant pressure in the first chamber and negative pressure in the second chamber. Through cooling crystallization, thickening by the thickening apparatus, the concentrated liquid continuously separates ammonium chloride as by-products. The gained secondary mother liquid returns to preparation groove. Repeating this cyclic process, we could sequentially get solid potassium nitrate and ammonium chloride.The invention has improved production stability and product quality a lot and reduced raw material consumption and energy consumption, with simple and serial flow process. The invention has realized the mass production.
Owner:EAST CHINA ENG SCI & TECH

Process for dryness, formation and further processing of water-enriched lignite

The invention provides a process for dryness, formation and further processing of water-enriched lignite. The process mainly comprises storage of the lignite, material transfer, crushing of lignite grains, rotary drum-shaped body multi-pipe drying, refined crushing, heating, hot pressing forming, screening and material return. The products can be used in process engineering in the fields of transportation, smelting, combustion, power generation or aerification. In the drying process, a rotary drum-shaped body multi-pipe drying device is used, and low-pressure vapor is indirectly used in the drying process, thereby avoiding the explosion due to the reaction of volatile compounds and oxygen, which is caused by too high temperature in the drying process; and in the forming process, little amount of internal water in capillary tubes of the lignite is used as a bonding agent, at certain temperature and grain size and under a certain pressure, gaps between lignite grains are filled by hot pressing so as to strengthen the contact between the lignite grains for forming. Because the hot pressing damages the structure of the capillary tubes of the lignite, the capillary tubes of the lignite are difficult to restore the original spongy property, thereby reducing the secondary adsorption water of the lignite grains. The process has the advantages of improving economic values of the lignite and causing little environmental pollution, along with safe drying and forming process.
Owner:CHINA NAT CHEM ENG GRP CORP LTD +1

Continuous flow sewage hypoxia short distance denitrification treating technique

InactiveCN101767910ARealize short-cut nitrification and denitrificationEnhance denitrification functionTreatment with anaerobic digestion processesWater/sewage treatmentActivated sludgeContinuous flow
The invention belongs to the technical field of biological sewage treating technique, in particular relates to a continuous flow sewage hypoxia short distance denitrification treating technique. The technique is implemented by a circular flow impelling system, sewage enters into an anaerobic zone through a water inlet pipe, and stays for 50-70min for biological phosphorus release; effluent from the anaerobic zone enters into an anoxic zone and stays for 4-6h with DO value controlled at 0.3-0.7mg / L, and the anoxic zone is provided with a first aeration system to realize anoxia or hypoxia condition to provide conditions for short distance nitrification and denitrification; effluent from the anoxic zone enters into an aerobic zone and stays for 4-6h with DO value controlled at 0.8-1.2mg / L, part of nitrification liquid in the aerobic zone flows back to the anoxic zone with reflux ratio being 0.8-1.5; effluent from the aerobic zone enters into a secondary sedimentation tank for mud-water separation, effluent is discharged at last, part of mud in the secondary sedimentation tank flows back to the anaerobic zone with mud reflux ratio being 0.5-0.8; the aerobic zone is provided with a second aeration system to complete organism degradation and nitrification processes. In the invention, dissolved oxygen, pH and the like are controlled, a hypoxia zone is formed in the anoxic zone, and technologies such as hypoxia short distance nitrification and denitrification, denitrification dephosphorization and the like are utilized, thus realizing the aim of efficiently removing nitrogen and phosphorus from continuous flow activated sludge with energy being saved.
Owner:TONGJI UNIV
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