174results about How to "Uniform distribution of temperature field" patented technology

The invention discloses a heat management coupling system of a power lithium battery. An air blowing fan and an air sucking fan are respectively installed on the front side and the rear side of a boxbody; a BMS battery management system and a heat management controller are fixedly installed on one side in the box body; one end of a temperature sensor is connected at the positive electrode end ofa battery module group, and the other end of a temperature sensor is connected with the BMS battery management system; the heat management controller is signally connected with an electrical heating film, the air blowing fan and the air sucking fan; through real-time collection, analysis and processing of a temperature signal, the BMS battery management system makes the heat management controlleradopt measurements of heating, cooling or heat preservation to control the temperature of the lithium battery. The heat management coupling system ensures that the influence factor of environmental temperature on the battery pack is minimized, and therefore achieves the purposes of heat dissipation during high-temperature, heating during low-temperature and phase-change temperature control, wherein the maintenance and replace methods of the phase-change material pack are more concise and convenient, and the device makes the temperature field distribution of the battery module group more even and accordant.

This invention discloses method and equipment for producing Sb203 single crystal with evenly-distributed particle sizes. The method comprises: (1) melting Sb metal in a reverberatory antimony trioxide furnace, and introducing air to the Sb melt surface in the furnace to oxidize Sb into Sb203 vapor; (2) introducing to a wind-blowing reactor and a crystallizer in sequence for three-step cooling and crystallization; (3) discharging through the output pipe of the furnace, and collecting with a dust-collecting system to obtain Sb203 single crystal powder with an average particle size of 0.2-3.5 mum, Sb203 content of 99.6% and whiteness higher than 98.5%. The method has such advantages as high yield, low energy consumption, long furnace service life, high automation degree, stable operation and wide raw material resources.

The invention discloses an SCR (Selective Catalytic Reduction) flue gas denitration device and a flue gas denitration method. The SCR flue gas denitration device comprises a coal economizer (1), a denitration reactor (2) and an air preheater (3), wherein the bottom of the coal economizer (1) is connected with the top of the denitration reactor (2) by an inlet flue (4), the bottom of the denitration reactor (2) is connected with the air preheater (3) by an outlet flue (5), an ammonia spraying device (6) is arranged in the inlet flue (4), and an ash crushing device (7), a rectifying layer (8) and a catalyst layer (9) are sequentially arranged in the denitration reactor (2) from top to bottom. The denitration method comprises the steps of ammonia gas mixture preparation, ammonia spraying, denitration and exhausting. According to the invention, through the reasonable setting of a nozzle, an effect of mixing sprayed ammonia with flue gas is better, and the uniformity of a temperature field in a flue can be effectively guaranteed, thereby improving the denitration efficiency.

The invention discloses a continuous graphitizing ultra-high temperature tube furnace, whose heating working temperature falls within a range of 2200-2800 DEG C. A structure of the continuous graphitizing ultra-high temperature tube furnace comprises a muffle furnace hearth, a protective tube, a heat insulation refractory layer and a furnace shell. A graphite muffle furnace hearth is tubular, is divided into three temperature areas and is an unique heating body. Water cooling copper electrodes are mounted at two ends of the muffle furnace hearth; the protective tube with an adjusting device is arranged outside the muffle furnace hearth; the protective tube is positioned between the muffle furnace hearth and the heat insulation refractory material; and the axis of the protective tube can be adjusted by the adjusting device. A heat insulation system, which is formed by a soft graphite felt, a soft felt, a carbon/carbon composite material and other materials, is arranged in a furnace body; the airtight furnace shell with a water cooling steel structure is arranged outside the heat insulation system; the water cooling furnace shell comprises a plurality of independent water cooling chambers; and the chambers are respectively used for cooling different areas of the furnace body. The continuous graphitizing ultra-high temperature tube furnace disclosed by the invention has the advantages of high working furnace temperature, uniform and stable temperature field, less muffle furnace hearth surface heat accumulation phenomenon, long muffle furnace hearth service life, simple structure, easiness for machining and so on.

The invention relates to a method for manufacturing a large ingot through electromagnetically-controlled self-inoculation treatment. The method comprises the steps as follows: (1) a Y-shaped double-phase conveying nozzle is adopted for molten metal casting, and an electromagnetic device I is arranged on the outer side of the straight section of the double-phase conveying nozzle; an electromagnetic device II is arranged on the outer side of an ingot mold riser; (2) an ingot mold and the double-phase conveying nozzle are preheated before casting; (3) argon shielding is performed during casting, an inoculant is added when the liquid level of molten metal rises to 1/2-2/3 of the height of an inner cavity of the ingot mold, meanwhile, the electromagnetic device I is started, and the electromagnetic device II is started when the liquid level of molten metal rises to the height of the ingot mold riser line; and both the electromagnetic device I and the electromagnetic device II run at the low frequency; (4) after casting is completed, the electromagnetic device I is shut down, the electromagnetic device II s adjusted to run at the intermediate frequency from the low frequency, and heat insulation is performed on the ingot mold riser part by the aid of the Joule heating effect of the intermediate-frequency magnetic field until the ingot is solidified. With the method, the solidification structure of the steel ingot can be refined, the center segregation can be reduced, the center porosity can be reduced, and thus the inner and outer quality of the ingot can be improved.

The invention discloses a preparation method of Eu<3+> doped molybdate red fluorescent powder used for a white light LED (Light Emitting Diode). A chemical formula of the red fluorescent powder is Sr2CaMoO6:xEu<3+>, wherein x is greater than or equal to 0.01 and less than or equal to 0.15. Raw materials are weighed according to a stoichiometric ratio, the raw materials and a fluxing agent are fully and evenly mixed, and a mixture is added into double crucibles made of corundum, wave absorbent is arranged between the double crucibles, the double crucibles are loaded into a microvan, temperature is quickly raised to 750 to 950DEG C, the mixture is sintered in an oxidation environment, and heat preservation time is 0.5 to 4h; finally, cooling, grinding, washing and drying are carried out to obtain the red fluorescent powder used for the white light LED. During microvan sintering, the fluxing agent is added to accelerate the formation and growth of molybdate polycrystal, the sintering degree of the fluorescent powder is obviously lowered, sintering time is obviously shortened, a powder body is loose and does not need to be mechanically smashed, in addition, the shapes of aluminate fluorescent powder particles are effectively controlled, and the particles with a small particle diameter and even distribution are obtained, wherein the appearance of the particles is similar to a sphere.

The invention relates to a preparation method of an Al-Zn-Mg large-sized flat cast ingot. The preparation method includes the following steps that preparing is conducted; smelting is conducted; heat preservation is conducted; degassing and filtering are conducted; on-line grain refinement is conducted; casting is conducted, specifically, a lower casting pipe is used for casting, a distribution bagis installed at the bottom of the lower casting pipe, and an aluminum melt can flow in a semi-closed cavity formed by a crystallizer and a dummy bar head in the crystallizer; and homogenization treatment is conducted. The preparation method of the Al-Zn-Mg large-sized flat cast ingot can effectively solve the problems of uneven composition and prone cracking of the large-sized flat cast ingot.

The invention discloses a preparation method of M3Si6O12N2: xRe system green fluorescent powder. According to the preparation method, M is one or the mixture of more than two of Ca, Sr and Ba; Re means a rare-earth element; and x is more than or equal to 0.2 mol% and less than or equal to 20mol%. The method comprises the steps as follows: weighing raw materials based on the stoichiometric ratio of various elements in the chemical formula of fluorescent powder; fully and uniformly mixing the raw materials; then placing the mixture into a sagger manufactured by a wave-transmitting material; positioning the sagger into a special microwave oven; adjusting the microwave power to control the temperature raise rate under a certain gas atmosphere; heating to reach the synthesizing temperature; and finally, cooling and simply grinding to obtain the system green fluorescent powder. Compared with traditional high-temperature solid phase method, the preparation method disclosed by the invention adopts microwave heating, therefore, the synthesizing temperature is reduced to 1000 to 1500 DEG C, moreover, the reaction time is reduced, and the production efficiency is improved; and the prepared green fluorescent powder has the advantages of fine grain size, high crystallizing performance, narrow range of size distribution, regular appearance and shape, high particle dispersing performance, and the like, and is specifically applied to white light and backlight LEDs (Light Emitting Diodes).

The invention provides a surface molding metal material additive manufacturing method. The surface molding metal material additive manufacturing method comprises the following steps of (1) parameter setting; (2) slicing treatment; (3) laser beam splitting in the x-direction; (4) laser beam splitting in the Y-direction; (5) shading; and (6) part molding. Through the surface molding metal material additive manufacturing method, the heating mechanism of parts in the molding process is improved, the temperature field of the parts is distributed more evenly, the temperature gradient is reduced, andgeneration of warping and fracture defects of the molded parts due to heat stress and heat deformation is reduced. Compared with a traditional laser dot matrix scanning from-point-to-plane and layer-by-layer stacking molding method, a layer of the cross section of each part can be directly molded through area array molding, and then the part is subjected to stacking molding layer by layer. Thus,the area array molding process is simpler, and the metal material additive manufacturing efficiency can be improved.

The invention relates to an oil heating device, which comprises a heating tube made form non-metallic material. Wherein, the heating tube via the support elements comprises the heating elements made form metals to heat the oil; the outer surface of said heating tube is coiled with the sensing coil connecting the alternating current power. The invention uses the electromagnetic sensing theory to heat transmitted oil inside the oil tube, with high electric heating efficiency and reduce the heat loss, without using thermal-insulating material to avoid the heat loss between the heated oil and the heat source. It has less maintenance and lower cost. The oil in the heating tube can be heated when flowing along the inner and outer surfaces of heating elements, while the temperature field inside the oil is uniform distributed to make the temperature control easily. The invention makes the heating elements emit heat according to the electromagnetic sensing theory and uses the heating elements to heat oil without environment pollution.

The invention relates to an electromagnetic stirring generating device, method and application of a composite time-varying magnetic field. The device is a composite rotating magnetic field electromagnetic stirring generating device or a time-varying magnetic field generating device, or a traveling wave magnetic field electromagnetic stirring generating device. According to the method and the application, in the continuous casting, semi-continuous casting or die casting process, the electromagnetic stirring generating device of the composite time-varying magnetic field acts on a crystallizer for continuous casting or semi-continuous casting, a secondary cooling zone and any one position or multiple positions of the tail end or a riser in the mold casting production, liquid level and the like, so that the mechanical property of a casting blank is improved by improving the component segregation and the shrinkage porosity of the casting blank. Compared with the continuous casting or semi-continuous casting or die-casting production process, electromagnetic stirring or time-varying magnetic fields are independently applied, so that the shrinkage porosity and component segregation of the core of the casting blank are remarkably improved.

The invention relates to high-heat-capacity SiCp/Al composite material wheel-mounted brake disc bodies. The high-heat-capacity SiCp/Al composite material wheel-mounted brake disc bodies are made of SiCp/Al composite materials. Each high-heat-capacity SiCp/Al composite material wheel-mounted brake disc body comprises a friction ring (1), high plate bars (2), connection columns (3), short plate bars (4), positioning columns (5), bolt holes (6) and positioning grooves (7), wherein the section of the friction ring (1) is trapezoid; every three high plate bars (2) fall into one set, and totally six sets of high plate bars (2) are evenly distributed in the circumferential direction; each combined bar A is composed of one high plate bar (2) and one connection column (3), and twelve combined bars A are evenly distributed in the circumferential direction; each combined bar B is composed of two high plate bars (2), one short plate bar (4) and one positioning column (5), and six combined bars B are evenly distributed in the circumferential direction; the bolt holes (6) are formed in the connection columns (3); and the positioning grooves (7) are formed in the positioning columns (5). The two disc bodies are located on the two sides of a wheel, axial positioning between the disc bodies and the wheel is achieved through bolts, and circumferential positioning between the disc bodies and the wheel is achieved through positioning pins. The disc bodies deform concertedly, the internal temperature is even, and stress is small.

The invention relates to the technical field of air conditioners, in particular to an upper and lower exhaust wall-mounted air conditioning indoor unit. The upper and lower exhaust wall-mounted air conditioning indoor unit comprises a shell, an upper crossflow wind wheel, a lower crossflow wind wheel, an upper evaporator, a lower evaporator, a first wind way and a second wind way, wherein a wind inlet is formed on a side surface end plate of the shell; indoor return wind enters two side cavities from side surface end plates at two sides, and enters a wind inlet cavity formed among the upper evaporator, the lower evaporator and a front panel of the shell; then, an air current is divided into two ways for heat exchange by the upper evaporator and the lower evaporator, and is blown out from the first wind way and the second wind way after being guided by the upper crossflow wind wheel and the lower crossflow wind wheel; the wind blown out from the first wind way reaches an indoor ceiling to form an absorption effect, and sinks after being blown for a longer distance; and as the wind inlet is arranged on the side surface end plate, the indoor air current structure is formed to surrounding wind to intensify the indoor air disturbance, the indoor temperature field distribution is more uniform, and the temperature is more comfortable.

The present invention discloses production equipment and a technology for a cathode material or an anode material of a converter-type lithium battery, the production equipment comprises a feeder, a fluidized bed mixing device, a gas-solid settlement separation component, a flue pipe, a converter, a combustor, a discharge duct, a motor and a particle cooler; the technical process comprises the following steps the prepared raw materials enter into the fluidized bed mixing device through the feeder, air is introduced and mixed with the prepared raw materials, then is carried with air to the gas-solid settlement separation component, the raw materials are separated with air and enters into the converter, then reacted at 500-900 DEG C to generate the lithium battery cathode or anode material, the produced lithium battery cathode or anode materials are delivered into the particle cooler and then discharged. The production equipment solves the defects of low automation degree, discontinuous production in original equipments, and the lithium battery cathode or anode materials can be produced with high efficiency, low energy consumption and continuous production.

The invention discloses an ERD + coal saturated steam catalytic combustion denitration device. The ERD + coal saturated steam catalytic combustion denitration device comprises a decomposing furnace, wherein a secondary air inlet is formed in the bottom of the decomposing furnace, and connected with a cement rotary kiln; the decomposing furnace comprises a reduction zone, a main burning zone, a reburning zone and a burning-out zone from the bottom up, a reduction zone saturated steam catalytic combustor and a reburning zone saturated steam catalytic combustor are respectively mounted in the reduction zone and the reburning zone; the reduction zone saturated steam catalytic combustor and the reburning zone saturated steam catalytic combustor are connected with a steam flow metering device, the steam flow metering device is connected with a steam surge tank, the steam surge tank is connected with a steam main pipe, the main burning zone and the burning-out zone are respectively connected with tertiary air and over-fire air, and are oxygen enriched combustion zones, to ensure that pulverized coal of the system is burnt out. The invention further discloses an ERD + coal saturated steam catalytic combustion denitration technique, and has the advantages of high denitration efficiency, simple and easily operated technological process, low operation cost, high system stability, optimized clinker production technology, energy-saving and consumption-reducing effects and the like.

The invention discloses a method for manufacturing an ITO heating plate for a large-area LCD screen. An area division heating mode is adopted for design, and an etching method is adopted for dividing a whole ITO substrate into areas according to a certain area proportion. Specifically, the method comprises the following steps of cleaning, resist coating, exposing, developing, ITO etching, electrode preparing and glue enveloping. The method has the advantages that the temperature field distribution of an ITO glass panel is uniform, the work effect of the LCD panel is good, and the working life of the LCD screen is prolonged.