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257results about How to "Realize large-scale" patented technology

Coaxial drive and control structure for coaxial contrarotation rotor helicopter

ActiveCN102658865AAvoid High Stress StructuresGuaranteed StrengthRotocraftDrive shaftControl arm
The invention relates to a coaxial drive and control structure for a coaxial contrarotation rotor helicopter. A spindle is a hollow fixed shaft, the fixed shaft is provided with an upper rotor hub and a lower rotor hub, the upper rotor hub and the lower rotor hub are connected by virtue of a gearing shaft, the middle section of the fixed shaft comprises multiple support pillars which are uniformly distributed, an upper inclinator support and a lower inclinator support are arranged in spaces among the support pillars, a total propeller pitch sliding sleeve is arranged inside the lower section of the fixed shaft, a primary variable-pitch control rod is arranged in the total propeller pitch sliding sleeve and is located and hinged by virtue of a ball shaft, the upper part of the primary variable-pitch control rod is connected with the upper inclinator support and the lower inclinator support, and the lower end of the primary variable-pitch control rod is respectively hinged with a variable-pitch rocker arms by virtue of two variable-pitch connecting rods; and an upper inclinator and a lower inclinator are arranged between the upper rotor hub and the lower rotor hub and are hinged with an upper rotor control arm and a lower rotor control arm by virtue of an upper rotor control rod and a lower rotor control rod. By adopting the coaxial drive and control structure for the coaxial contrarotation rotor helicopter disclosed by the invention, the defect that a rotation control assembly penetrates a rotating surface is eliminated, thus the coaxial contrarotation rotor helicopter can be provided with more upper rotors and more lower rotors, lifting power of the helicopter is improved, full differentiating control can be realized, and manufacturing and processing costs of the spindle also can be reduced.
Owner:李游

Light guide plate, light guide plate assembly, and surface illuminating device and liquid crystal display device using these

A light guide plate, comprising a light exiting surface and a light entering end, has a shape in which its thickness perpendicular to the light exiting surface increases gradually as it is away from the light entering end and has scattering particles scattered therein. A light guide plate assembly comprises this guide plate, and a prism sheet in which a plurality of prisms are arranged in parallel with the apex angles of the prisms arranged facing the light exiting surface. A surface illuminating device comprises a light guide plate or a light guide plate assembly, and a liquid crystal display device comprises the surface illuminating device. The scattering particles scatter light entering at the light entering end and propagating through the inside and satisfy the following expression (1) and (2), and the apex angles of the prisms of the prism sheet satisfy the following expressions (3) and (4). (F is scattered sectional area, NP is particle density, LG is length of guide plate along incident direction, KC is correction coefficient, phi is apex angle of symmetric prism, and theta1 and theta2 are two apex angles divided by perpendicular of non-symmetric prism.) 1.1<=FNPLGKC<=8.2 ---(1) 0.005<=KC<=0.1 ---(2) 55 DEG<=theta<=80 DEG ---(3) 0 DEG<= theta1<= 15 DEG and 30 DEG<= theta2<= 45 DEG ---(4).
Owner:FUJIFILM CORP

Corrugated sternum H-shaped steel composite beam

The invention relates to a corrugated web plate H-shaped profile steel composite bean, belonging to the technical field of building profile materials . The cross section port type comprises a corrugated web plate and an upper and lower flange joints. The upper flange is in parallel with the lower flange; the web plate is vertical to the upper flange and the lower flange; the web plate is connected with the flanges by single-sided fillet weld; the web plate is a trapezoid ripple or a sine curve ripple, wherein the lengthwise direction of the trapezoid ripple is repeated periodically. The upper part of a composite beam is a reinforced concrete swing plate and a profiled steel sheet. The upper flange, the reinforced concrete plate and the profiled steel sheet are connected by a plurality of studs; the reinforced concrete swing plate can be connected with the profiled steel sheet by additional lateral steel bar. The traditional hot-rolling joist steel and H-shaped profile steel composite beam can be replaced by the corrugated web plate H-shaped profile steel composite bean which has the wider application than joist steel and H-shaped profile steel composite beam; the maximization can be realized for special field and special location comprising the construction of large span industrial and civil building and large span bridge.
Owner:TONGJI UNIV

Negative Poisson's ratio aluminum-based lattice structure and preparation method thereof

The invention discloses a negative Poisson's ratio aluminum-based lattice structure and a preparation method thereof. The negative Poisson's ratio aluminum-based lattice structure is formed by periodically arranging one or more layers of unit cell structures, the unit cell structures are of pull bulging type three-dimensional negative Poisson's ratio structures, the material is a negative Poisson's ratio material, the negative Poisson's ratio material is industrial pure aluminum or an aluminum alloy, and the unit cell structures are formed by connecting a plurality of horizontally-arranged andslantly-arranged rod units; and the diameter of the unit cell rod units is 0.5-5.0 mm, the length of the unit cell rod units is 0.5-15.0 mm, and the included angle between the slantly-arranged rod units and the projective planes of the rod units is 30-70 degrees; and CATIA software is adopted for modeling and design, a polymer material and a 3D printing technology are adopted for manufacturing amodel, a porous skeleton is made by soluble gypsum, and the aluminum-based negative Poisson's ratio lattice material is prepared by a positive pressure gas pressure percolation technology. The 3D printing and pressure percolation technologies are adopted to prepare the aluminum-based lattice structure in a combined manner; and the negative Poisson's ratio aluminum-based lattice structure which hasthe characteristics of small unit cells, thin rod elements, multiple layer levels, complex configuration and the like is achieved.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI

Microalgae half-dry solid state adherent cultivation device for alternate illumination of bright and dark light

The invention belongs to the field of microalgae cultivation, and particularly relates to a microalgae half-dry solid state adherent cultivation device for alternate illumination of bright and dark light. The microalgae half-dry solid state adherent cultivation device comprises a bracket system, an adherent cultivation unit, a speed regulating motor, a liquid supplement pipe, a liquid collection tank and a peripheral protection cover, wherein the adherent cultivation unit is arranged on the bracket system and is connected with the speed regulating motor; the liquid supplement pipe is arranged above the adherent cultivation unit, and the liquid collection tank is arranged below the adherent cultivation unit; the liquid collection tank is internally provided with a liquid circulating pump, a liquid supplement device and a carbon supplement device; the liquid circulating pump is connected with the liquid supplement pipe through a pipeline; and the peripheral protection cover is arranged on the periphery of the bracket system and the adherent cultivation unit; and the top surface of the protection cover is made of a light-passing material. The device utilizes the principle of bright and dark flashing light to dilute the bright light and improve the utilization efficiency of luminous energy, thereby improving the yield of microalgae biomass.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI

Method for preparing hydrogen peroxide

The invention discloses a method for preparing hydrogen peroxide. A working liquid and a hydrogen-containing gas are introduced into a slurry bed reactor; a hydrogenated liquid is obtained by reaction in the existence of a catalyst; the hydrogenated liquid reacts with oxygen to obtain the hydrogenated liquid containing hydrogen peroxide in an oxidation reactor; oxidized liquid is extracted and separated from an extraction tower to obtain a hydrogen peroxide solution and working liquid; the slurry bed reactor comprises a cap (12), an expanding section (13) and a draft tube (11); the expanding section (13) is positioned at the lower part of the cap (12); the pipe diameter of the expanding section (13) is greater than that of the cap; the draft tube (11) is arranged in the expanding section (13); the pipe diameter of the draft tube (11) is smaller than that of the cap (12); a bottom opening of the cap (12) extends into the expanding section (13); the outer wall of the cap (12) is connected with the top of the expanding section (13); an upper opening of the draft tube (11) extends into the cap (12); and an opening is formed in the lower part of the draft tube (11). The method disclosed by the invention is stable to operate, and easy for realization of industrial enlargement; no alkali is introduced in the process of preparing hydrogen peroxide; and the risk of explosion caused by hydrogen peroxide decomposition is avoided.
Owner:CHINA PETROLEUM & CHEM CORP +1

Novel rare-earth electrolytic bath

The invention relates to a novel rare-earth electrolytic bath. A gap is reserved in the center of each anode, and the bottom surface of each anode is a concave surface being concave from the periphery towards the center. A cathode is correspondingly arranged below each anode. The cathodes are buried in a protruding high-temperature-resisting material. The top of each cathode is an arc convex surface and protrudes out of the high-temperature insulating material. An electrical insulating layer is arranged between the high-temperature-resisting material and each cathode. A metal groove is formed between every two cathodes, and the high-temperature-resisting material is concave downwards to form the metal grooves. A cathode steel bar is located at the bottom of each cathode and connected with the cathode. The space between every two adjacent cathode steel bars is filled with a graphite block. An electrical insulating layer is arranged between each graphite block and the corresponding cathode steel bar. A feeder is arranged on the top of a bath body. According to the novel rare-earth electrolytic bath, the convex surfaces of the cathodes are higher than the high-temperature insulating layers, so that a high-temperature zone of the electrolytic bath is moved upwards. Through the metal grooves designed for the electrolytic bath, the contact area of metal and an electrolyte is reduced, re-dissolution of the metal is restrained, and the current efficiency is improved. The shapes of the anodes of the electrolytic bath are beneficial for discharging of anode bubbles.
Owner:CENT SOUTH UNIV

A vertical roller mill

InactiveCN102284322AImprove adaptabilityInorganic adjustment of grinding forceGrain treatmentsHydraulic cylinderSlag
The invention relates to a vertical roller mill, which comprises a vertical main rotating shaft arranged on a machine body, wherein a speed reducer and a motor are connected to the lower end of the main rotating shaft sequentially; a grinding bowl is arranged at the upper end of the main rotating shaft; the upper part of the inner side of the grinding bowl contacts a plurality of grinding rollers; the grinding rollers arranged on the grinding roller shaft by a bearing; the grinding roller shaft is connected to one end of a rocker arm; the middle part of the rocker arm is hinged to the machinebody; the other end of the rocker arm is hinged with the upper end of a hydraulic cylinder; the lower end of the hydraulic cylinder is arranged on the machine body; a central feed pipe which aligns with the grinding bowl downwards is arranged on the top of the machine body; and a discharge hole is formed below the grinding bowl on the machine body. The vertical roller mill has the advantages of convenience for oil injection, high yield, low energy consumption, large processing capacity, high efficiency and sealing performance, adjustable grinding force and the like, is easy to maintain and overhaul, and the technical problems of enrichment of steel slag and iron granules, high abrasion of the mill, difficulty of overhauling of equipment and the like are solved radically.
Owner:TIANJIN SUMEIR ENVIRONMENTAL PROTECTION INVESTMENT

Heat accumulation-exchange type heating stove and heating method thereof

The invention provides a regenerative-recuperative combined heating furnace and the heating means, which relate to the technology field of industrial heating and recovery of waste heat. The invention is characterized in that: a regenerator and a heat exchanger are provided at the same time in the system; a soaking zone and a heating zone are arranged in front of the heating furnace; a preheating zone is provided on the tail of the heating furnace; multi-zone (point) heating system of the soaking zone, heating zone and preheating zone is adopted, the front of the heating furnace adopts regenerative combustion method and the back adopts recuperative combustion method; the preheating zone directly adopts flue gas waste heat to heat the materials. The objectives of the invention are to realize maximization of the heating furnace and smooth control of the furnace pressure, overcome the defects of the regenerative-recuperative heating furnaces and flue gas waste heat recovery technology and facilitate the low heat value fuels like pure blast furnace gas being applied in the heating furnace. The heating furnace has smooth pressure and long service life. The implementation of the invention realizes the maximization of the heating furnace, improves the flue gas waste heat utilization rate and reaches the aims of improving the pressure condition in the furnace, reducing air draft and sparking and energy conservation and emission reduction, etc.
Owner:蔡九菊

Method and system for producing ethyl chloride

The invention discloses a method for producing ethyl chloride, which comprises steps as follows: hydrochloric acid and zinc chloride after concentration by evaporation enter a hydrochloric acid heating unit from the bottom to be heated, enter an ethyl chloride reactor, and are subjected to thermal separation of the ethyl chloride and mixed solution; the separated magnesium chloride enters an evaporation dehydrator to be heated; the zinc chloride solution is concentrated; and the high-concentration zinc chloride naturally flows to the lower part of a hydrochloric acid evaporator to be recycled. The invention can be matched with a climbing film graphite evaporator with larger heat transfer area to implement the large-size ethyl chloride reactor and enhance the level of the ethyl chloride industrialization device; the reaction rate and raw material conversion rate are enhanced; graphite is used as the distributor of the ethyl chloride reaction part, so the corrosion resistance is high; the steel liner polytetrafluoroethylene cylinder and pipeline are adopted, thereby resisting corrosion and enhancing the operating pressure and equipment utilization ratio; and in addition, the invention is convenient to operate, enhances the production efficiency of ethyl chloride, and has favorable application value.
Owner:JIANGSU YINZHU CHEM GROUP

Dissolving-out process for large-sized pipeline remaining tank of diasporite bauxite ore

The invention provides a dissolving-out process for a large-sized pipeline remaining tank of diasporite bauxite ore. Processed raw materials include gibbsite and boehmite mixed bauxite ore or the diasporite bauxite ore. The dissolving-out process includes the following steps: pre-desiliconized ore pulp is mixed with circulating mother liquor at an outlet of a desiliconizing discharging groove, is preheated by a sleeve preheater, is heated to the dissolving-out temperature by a sleeve heater, and then enters a heat-preservation remaining tank for remaining; finally, flash evaporation and separation are carried out on the ore pulp by a flash evaporator. The method in the invention realizes maximization of equipment, has strong capability of processing the ore pulp, and breaks through the capability limit of a pressing and stewing dissolving-out process to process the ore pulp; moreover, energy is saved, and the heat utilizing rate is high. The multi-inner-pipe sleeve preheater and the heater are adopted to preheat and heat the bauxite ore pulp; within the operating temperature range of the process, the heat transfer coefficient can be up to 900 to 1,200 Kcal/m2.h. DEG C. Compared with the traditional dissolving-out process, the dissolving-out process in the invention can save more than 30% of the energy in a comprehensive manner.
Owner:NORTHEASTERN UNIV ENG & RES INST CO LTD

Furnace bottom anti-clogging boiling chloridizing furnace with chlorine uniform distribution

The invention relates to an evenly distributed chlorine anti-blockage boiling chlorination furnace bottom which can solve the problems of blockage of a sieve plate of the existing boiling chlorination furnace and channeling and dead zones of airflow, a support sleeve is arranged at the middle part of an outer shell of the furnace bottom, an isolation plate is arranged on the support sleeve, a plurality of chlorine distribution pipes are evenly distributed on the isolation plate, whirlpool rods which can ascend, descend and rotate freely are arranged in the chlorine distribution pipes, and an annular chlorine pipe is arranged in the outer shell of the furnace bottom. A fixed sleeve is arranged at the periphery of the isolation plate, and refractory fillers which consist of fireclay refractory materials containing 45 percent-70 percent silicon oxide are filled among the chlorine distribution pipes in the fixed sleeve. A slag discharge pipe is penetrated in the refractory fillers, the isolation plate and the middle part of the furnace bottom. The adoption of the boiling chlorination furnace bottom can lead chlorine to enter the chlorination furnace in the whirlpool form, form a stable flow layer in the furnace, realize the large-scale chlorination furnace and the stable operation, solve the problems of material leakage and blockage of the sieve plate and prevent the occurrence of channeling and dead zones.
Owner:锦州金业化冶技术有限公司

Modular frame type high-efficiency vertical axis wind turbine

The invention relates to a modular frame type high-efficiency vertical axis wind turbine. The modular frame type high-efficiency vertical axis wind turbine comprises a wind wheel spindle, a step-up gear box, a permanent magnet synchronous generator, a wind power control cabinet and a peripheral foundation, and is characterized by further comprising a resistance type wind wheel, a force lifting type wind wheel, wind direction flow guide plates and transverse supporting structures; the resistance type wind wheel is mounted on the top of the wind turbine, and the lower part of the resistance type wind wheel is connected with the wind wheel spindle; the force lifting type wind wheel has a three-layer stacked impeller structure, a corresponding section of the wind wheel spindle is arranged in the center of each layer of the force lifting type wind wheel, each layer comprises a plurality of blades, each blade is connected with the corresponding section of the wind wheel spindle through a wind wheel support, and the different sections of the wind wheel spindle are flexibly connected through shaft sleeves; all the blades on the three layers are arranged in a staggered manner, projections of all the blades on the horizontal plane are distributed in a circular area, and the number of the blades in each layer is an odd number; and each wind wheel support comprises a rectangular frame, and one end of each rectangular frame is connected with the wind wheel spindle.
Owner:HEBEI UNIV OF TECH

Method for preparing hydrogen or reducing gas by ammonia cracking through two-stage process

The invention particularly relates to a method for preparing hydrogen or reducing gas by ammonia cracking through a two-stage process, which comprises the following steps that firstly, raw material liquid ammonia iscompletely gasified and heated through a heat exchange gasification system, then enters a first-stage heat exchange ammonia cracking reaction system, and a partial ammonia cracking reaction is conducted, the reaction gas discharged from the first-stage heat exchange ammonia cracking reaction system enters the second-stage high-temperature ammonia cracking reaction system to carry out a residual ammonia cracking reaction, and the second-stage high-temperature ammonia cracking reaction gas sequentially enters the first-stage heat exchange ammonia cracking reaction system and the heat exchange gasification system to obtain the reducing gas after heat is recovered step by step. And when the reducing gas needs to be subsequently prepared into hydrogen, the reaction gas is cooled to normal temperature after heat recovery, and then enters a PSA hydrogen extraction system to prepare the product hydrogen. The two-stage ammonia cracking method is adopted, the gas heat of a second-stage high-temperature ammonia cracking reaction outlet is fully utilized, the external heat supply amount is saved, and meanwhile, the investment of a second-stage high-temperature ammonia cracking reaction system is reduced.
Owner:SOUTHWEST RES & DESIGN INST OF CHEM IND

Full-serial plate shell heat exchanger

The invention discloses a full-serial plate shell heat exchanger which reduces the thermal stress of the structure to the minimum extent by adopting an assorting cylinder treatment mode. The structure of the full-serial plate shell heat exchanger mainly comprises an upper end enclosure, a lower end enclosure, an III-stage cylinder, a II-stage cylinder, a I-stage cylinder, a skirt, a lathed bundle, a fluid distributor and the like, wherein heat exchange of cold and hot media is finished in the lathed bundle, a shell formed by the cylinders, the end enclosures and an adapter tube is a main bearing element, the lathed bundle is arranged in the cylinders, and all cylinders are fixedly connected in series by an equipment flange through bolts. A channel consisting of the fluid distributor and used for stabilizing a first fluid pressure head is arranged between the cylinders; and a second fluid channel is communicated by a bypass adapter tube of all the cylinders. The fluid distributor comprises an upper baffle, a lower baffle, a drainage tube, an expansion ring and the like. The full-serial plate shell heat exchanger can solve the technical problems that a plurality of traditional simple serial plate shell type heat exchangers are serious in pressure drop loss, increase the equipment cost, waste land resources, are not beneficial to energy conservation and emission reduction, and the like.
Owner:GANSU LANPEC TECH +3
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