42results about How to "Improve temperature field distribution" patented technology

The invention discloses a process chamber device and epitaxial equipment with the process chamber device. The process chamber device comprises: a top cap and a bottom cap; an inner quartz tube, which is located between the top cap and the bottom cap and provided with exhaust holes, and defines a process chamber together with the top cap and the bottom cap; a graphite sleeve positioned between the top cap and the bottom cap and sleeved outside the inner quartz tube, with an exhaust path defined between the graphite sleeve and the inner quartz tube, communicated with the outside, and communicated with the process chamber through the exhaust holes; and an outer graphite sleeve positioned between the top cap and the bottom cap and sleeved outside the graphite sleeve, with a cooling channel defined between the outer graphite sleeve and the graphite sleeve and communicated with the outside. According to the process chamber in embodiment of the invention, temperature field distribution in the process chamber can be improved, and ultimately, uniformity of the radial temperature in the process chamber and further in a substrate can be realized. Also, the maintenance frequency and the maintenance cost of the graphite sleeve can be reduced.

The invention discloses a vehicle-mounted new energy battery pack. The vehicle-mounted new energy battery pack comprises a battery box and multiple battery bodies arranged in the battery box; the battery box comprises a sealed type box body; a space partition plate is vertically arranged in the sealed type box body; the battery box is divided by the space partition plate into a battery placement region and a heat dissipation region; a fan is arranged on the battery box top plate above the battery placement region; a temperature detector is arranged in the battery placement region; multiple ventilating holes are formed in a battery fixation frame in the battery placement region; the ventilating holes are connected with the heat dissipation region to from an air circulation channel; and an air cooling apparatus is arranged in the air circulation channel. Compared with the prior art, the battery pack is arranged in the sealed box body according to the structure of the vehicle-mounted new energy battery pack, so that effects of thermal insulation and waterproofness are realized; by virtue of divisional setting, the temperature field distribution in the battery box can be improved; and by virtue of the battery bodies, the high-rate discharging performance of the lithium battery is improved, and excellent electronic conductivity and ionic conductivity and high high-rate charging-discharging performance are represented.

The invention discloses a low-temperature surface type heat exchanger adopting bypass throttling. The low-temperature surface type heat exchanger comprises a high-pressure side pipeline and a low-pressure side pipeline. The low-temperature surface type heat exchanger is operated in a liquid hydrogen temperature region or a lower temperature region. At least one bypass pipeline communicated with the low-pressure side pipeline is arranged on the high-pressure side pipeline, and an isenthalpic throttling element is arranged on each bypass pipeline. The temperature of a working medium in the low-pressure side pipeline at the outlet of each bypass pipeline is lower than the temperature of a working medium in the high-pressure side pipeline at the inlet each bypass pipeline. The invention further provides a precooling J-T refrigerator. Temperature field distribution of gas in the heat exchanger is changed by adopting bypass throttling, and irreversible loss is reduced. The heat exchanger is applied to the liquid helium temperature region precooling J-T refrigerator, temperature of high-pressure gas before throttling is lowered, refrigerating capacity of the liquid hydrogen temperature region is increased, and overall efficiency is increased.

The invention discloses oxygen-rich continuous gasification technology for a coupled fixed bed, wherein a solid raw material comprises coal or coke, and a gas raw material comprises oxygen, air and steam; and the oxygen can be mixed with the air into oxygen-rich air first and then is sent into a gas-making furnace, and can also be sent into the gas-making furnace in the form of single gas. The technology is characterized in that the gas-making furnace is that two common gas furnace bodies (A and B) are connected into a whole by a pipeline and a valve, two furnaces alternately upward blow to make gas, and the gas raw material can also comprise carbon dioxide; and the gas-making process comprises the step of the blowing-off of the A and B furnaces, the step of upward blowing of the A furnace, the step of secondary blowing-off of the A and B furnaces, and the step of upward blowing of the B furnace, and the steps are circulated. The gas-making furnace is that the two common gas furnace bodies are connected into a whole by the pipeline and the valve, and the two furnaces alternately upward blow to make gas, so the technology can optimize the distribution of temperature fields in the gas furnaces, reduce the sensible heat loss of semiwater gas, the erosion to pipelines in subsequent working procedures, and the quantity of carry-overs, improve the condition of gas quality, and reduce gas consumption and coal consumption.

The invention discloses a natural gas shuttle-type energy-saving kiln. The natural gas shuttle-type energy-saving kiln comprises a kiln top of a hanging type micro arc top structure. A kiln door is of a single arm connection shaft rotary operation structure. A whole kiln frame is of an assembly type integral structure and externally provided with a stoving varnish color board in a sealed mode. A combustion system adopts outer mixed type nozzle design. Smoke adopts a kiln tail smoke discharge mode. According to the natural gas shuttle-type energy-saving kiln, through of body structure light and energy-saving design of the natural gas shuttle-type kiln, natural gas efficient combustion technology and waste heat utilization technology, the natural gas shuttle-type energy-saving kiln and comprehensive utilization of energy are achieved, ceramic product quality is improved, the energy cost is reduced, comprehensive utilization of the energy is achieved, emission is reduced, and clean production is achieved.

The invention provides a moving bed gasification furnace which is used for fuel gasification. The moving bed gasification furnace comprises a furnace body, wherein the inside of the side wall of the furnace body is provided with a water cooling wall through which cooling water can pass, which is used for reducing high temperature generated by gasification of the fuel in the furnace body; a cavity is formed between the side wall and water cooling wall of the furnace body; and the cavity can be filled with inert gas to prevent the furnace body from overhigh temperature. The water cooling wall is arranged inside the moving bed gasification furnace to protect the furnace body of the moving bed gasification furnace, thereby avoiding the damage to the furnace body due to overhigh temperature.

The invention discloses a gas base shaft-furnace direct reduction method for strengthening iron ore pellets. The method comprises the following steps of (1) evenly mixing iron ore oxidation pellets and biomass charcoal ingredients, and enabling ingredients in a mixing material by weight to be 92%-99% of iron ore pellets and 1%-8% of biomass charcoal; and (2) adding the mixing material in a shaft furnace, conducting gas base direct reduction for 0.5 to 3 hours at the temperature of 800 DEG C-1000DEG C to obtain metallized pellets. The gas base reduction of the biomass strengthening iron ore pellets is adopted, bonding degree of the pellets in a reduction process is effectively reduced while reduction rate is improved, and utilization efficiency and running states of the shaft furnace are greatly improved.

The invention discloses liquid steel casting equipment. The liquid steel casting equipment comprises an ingot mold, wherein the upper part of the ingot mold is provided with a hot top; the ingot mold is arranged on an ingot mold base plate; a steel flow channel is formed in the ingot mold base plate, is communicated with a central casting pipe arranged on one side of an ingot mold body and is communicated with casting gates at the bottom of the ingot mold; and at least one casting gate is formed at the position which is deviated from the bottom center of the ingot mold. The liquid steel casting equipment can prevent the phenomenon of slag entrainment in the process of casting liquid steel by changing the position and the quantity of the ingot mold casting gates, deviating the casting gates from the bottom center or increasing a plurality of casting gates, changes the flow field distribution and the temperature field distribution of the liquid steel inside the ingot mold in the process of casting the liquid steel or after the casting, overcomes the defects of center segregation and loosing of steel ingots and can change the segregation positions of the steel ingots to make a segregation off center close to a steel ingot rolling surface at the same time.

The invention discloses a rim sealing structure capable of inhibiting non-uniform multi-scale gas invasion. The structure comprises a high-pressure turbine guide vane end wall, a rotating static containing cavity inner gear ring, an inner gear ring baffle and a rim lateral jet hole. According to the rim sealing structure, the flow resistance of gas invasion flow is increased through a combined gap, a rotating static disc cavity is divided through the rotating static containing cavity inner gear ring, then high-temperature invasion gas is limited at a high-radius position, and the circumstancethat a wheel disc is ablated due to the fact that the high-temperature invasion gas goes deep into a disc center is avoided. A static-static system containing cavity is constructed through the inner gear ring baffle so as to reduce the tangential speed ratio of the invasion flow, the high-temperature and high-speed invasion flow is buffered, and the sealing efficiency is improved. In addition, therim lateral jet hole forms high-pressure cold air outflow, so that the sealing efficiency is improved, thermal stress distribution of the inner gear ring and the inner gear ring baffle is improved, the thermal operation deformation of a turbine disc is reduced, rubbing of a rotating static component is avoided, and the reliability of the sealing structure is improved.

The invention discloses an air conditioning duct system capable of evenly regulating a temperature field of a building atrium. Firstly, rooms and the atrium communicate with the outside, and the roomsand the atrium communicate mutually to form an air flowing channel; and secondly, the rooms or the atrium is provided with a fresh air device forming the air pressure, so that the air pressure difference is formed between the rooms and the atrium. The air conditioning duct system capable of evenly regulating the temperature field of the building atrium is provided for solving the problem that thelarge vertical temperature gradient of the atrium space cannot be solved by an existing air conditioning system. The temperature field of the atrium space can tend to uniform in the vertical direction through the air conditioning duct system.

The invention discloses an atrium air conditioning wind system based on an air treatment unit. The atrium air conditioning wind system based on the air treatment unit comprises the air treatment unit,a bottom air port and a top air port, and the bottom air port and the top air port are used in summer and winter. An operation method of the atrium air conditioning wind system comprises the follow steps that in summer, air at the bottom of an atrium passes through the bottom air port, the air treatment unit and the top air port in sequence, and finally enters the top of the atrium; and in winter, air at the top of the atrium passes through the top air port, the air treatment unit and the bottom air port in sequence, and finally enters the bottom of the atrium. The atrium air wind conditioning system based on the air treatment unit and the operation method thereof are provided for solving the problem existing in an existing atrium air conditioning system that the existing atrium air conditioning system can not adjust the vertical temperature gradient of atrium space of a building in winter and summer. In winter and summer, the operation of the air conditioning wind system can enable the temperature field of the atrium space to tend to be uniform vertically.

The invention discloses a double-beam swing welding method for inhibiting high-strength titanium alloy welding cracks and relates to the field of material machining engineering. The method aims at solving the problems of welding cracks and air hole defects of high-strength titanium alloys, especially the problem that an existing swing laser welding method cannot be used for solving the problems ofwelding cracks and air hole defects of high-strength titanium alloys. By means of the method, a light path is designed for achieving double-beam laser welding, one beam is fixed, the other beam swings to serve as the auxiliary part, and a track and energy distribution synchronous optimization manner is used for inhibiting the above welding defects. Compared with common swing laser welding, the method can better conform to the flowing trend of a molten pool, convection of the molten pool is better enhanced, and air hole and cracking defects are reduced; the swing amplitude is larger, the temperature gradient is reduced, melt supplementation is driven at the solidification front of the tail portion of the molten pool, and solidification cracks are prevented; and light beam energy distribution and swing tracks are combined, temperature field distribution is improved, connector stress and deformation are reduced, and crack initiation is inhibited. The method is applied to the field of material machining.

The invention relates to a preparation and defocusing forming method of low-cost ceramic powder for selective laser melting. The preparation and defocusing forming method comprises the following steps: preparing powder or a powder mixture of a ceramic material; design import and layer cutting of a CAD model; using a roller for carrying out powder laying and powder pressing procedures on the prepared powder or powder mixture of the ceramic material, and obtaining a powder layer blank; controlling the forming cylinder to ascend and descend, and putting the powder layer blank in a defocusing state; heating the specific area of the powder layer blank to the highest temperature through a melting heat source, and integrating solidification and densification after melting and cooling; judging whether all cutting layers are completed or not; recovering the powder raw material and taking out the formed part. According to the method, the low-cost irregular ceramic powder is fully utilized so that the raw material cost can be saved; the temperature field distribution of the molten pool is optimized through defocusing printing, and the temperature gradient is reduced. With application of the method, the problems of high requirements on SLM ceramic powder, harsh processing conditions, complex and cumbersome process and post-treatment, high part preparation cost, insufficient performance andthe like are solved.

The invention relates to a protrusion type partition reactor. The protrusion type partition reactor comprises a reaction chamber 17 and a cooling chamber 20, the reaction chamber 17 is communicated with the cooling chamber 20 through a slag port 18, and the reaction chamber 17 and the cooling chamber 20 have the joint central axis. Compared with an existing gasifier, the protrusion type partition reactor has the advantages of being large in coal feeding amount, high in gasification efficiency, long in service life of a refractory lining and the like. Synthesis gas produced by utilizing the protrusion type partition reactor can be used as chemical engineering raw material gas and fuel gas, can be used for preparing hydrogen and synchronizing liquid fuels and the like, and is extremely wide in application.

The invention discloses an atrium air conditioning air system based on an air treatment unit, which comprises an air treatment unit. The atrium air conditioning air system based on an air treatment unit further comprises a bottom air inlet and a top air outlet for summer use; and the atrium air conditioning air system based on an air treatment unit further comprises a top air inlet and a bottom air outlet for winter use. For the operation method of the atrium air conditioning air system, in summer, the gas at the bottom of the atrium orderly passes through the bottom air inlet, the air treatment unit and the top air outlet and finally enters the top of the atrium; and in winter, the gas at the top of the atrium orderly passes through the top air inlet, the air treatment unit and the bottomair outlet and finally enters the bottom of the atrium. The invention aims at providing an atrium air conditioning air system based on an air treatment unit and an operation method thereof for the problem that the vertical temperature gradient of the building atrium space cannot be adjusted in both winter and summer, which exits in the existing atrium air conditioning system. In winter and summer, the operation of the air conditioning air system can make the temperature field in the atrium space tend to be uniform in the vertical direction.