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

The invention discloses an aluminum oxide ceramic integrated hot-pressing molding machine and a working method. The aluminum oxide ceramic integrated hot-pressing molding machine comprises a pressingdevice and a hot-pressing device which are fixed to a rack, wherein the hot-pressing device is located below the pressing device, a stirring device is arranged in the hot-pressing device, and a hot-pressing mold is arranged above the hot-pressing device; the pressing device enables one path of high-pressure gas to act on the hot-pressing mold, and enables the other path of high-pressure gas to enter the hot-pressing device to enable slurry to flow into a cavity of the hot-pressing mold; the stirring device is used for stirring the slurry in the hot pressing device so as to enable an aluminum oxide blank to be more uniformly distributed in the slurry; and temperature measuring elements for detecting the temperature of internal oil and the temperature of slurry at the slurry outlet are arranged in the hot-pressing device, the power of an electric heating device is regulated and controlled in real time according to the temperature detected by the temperature measuring elements, and the purpose of accurate temperature control is achieved. Through the mold and the heating device, the temperature field distribution tends to be reasonable, the slurry temperature can be accurately controlled, the heating efficiency is obviously improved, and the distribution of the aluminum oxide powder in liquid paraffin can significantly improve the molding quality of the casting.

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 an integrated stove. The integrated stove comprises a cabinet body (1), a stove body (2) arranged on a table surface (11) of the cabinet body (1), cooking equipment arranged below the table surface (11) of the cabinet body (1), and a heat dissipation device (4) arranged in the cabinet body (1) and provided with an inlet which is connected with the cooking equipment, whereina lampblack suction port (12) is formed in the cabinet body (1), and located in the upper rear part of the stove body (2). The integrated stove is characterized in that an air outlet port (14) is formed in at least one of the left side and the right side of the table surface (11) of the cabinet body (1); the air outlet port (14) is located in the periphery of the stove body (2) and extends in thefront-rear direction of the table surface (11) of the cabinet body (1); and the air outlet port (14) communicates with an outlet of the heat dissipation device (4). The invention further discloses aworking control method of the integrated stove. According to the integrated stove and the working control method thereof, the lampblack suction effect can be improved and the heat efficiency of the stove can be increased by virtue of heat generated by the cooking equipment; and meanwhile, the heat dissipation effect of the cooking equipment is 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 processof 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 flexible thermal convection type acceleration sensor and a preparation method thereof. The sensor includes a flexible substrate, a flexible sealing top cover, an S-shaped heating element, an S-shaped temperature sensing element and a heat-absorbing thin layer; the flexible top cover is arranged on a flexible On the substrate, a sealed cavity is formed between the two; the S-shaped heating element is fixed in the center of the flexible substrate in the sealed cavity; two S-shaped temperature sensing elements are fixed on the flexible substrate in the sealed cavity, and are symmetrically distributed Both sides of the S-shaped heating element; the heat-absorbing thin layer is closely attached to the S-shaped heating element inside the sealed cavity; among them, the flexible sealing top cover has a thermal insulation island structure, and the two thermal insulation island structures are symmetrical along the long axis Distributed on the inner surface of the top of the flexible sealing top cover, and distributed above between the S-shaped heating element and the S-shaped temperature sensing element. The acceleration sensor of the invention is suitable for flexible devices and has the characteristics of high sensitivity, fast response time and low power consumption. The preparation method is simple, the cost is low, and it can be prepared on a large scale.

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 relates to a constant temperature control system of an electric automobile battery pack and a control method. The constant temperature control system of the electric automobile battery pack comprises a battery pack, a battery pack front end cooling plate and a battery pack rear end cooling plate. The battery pack is installed between the battery pack front end cooling plate and the battery pack rear end cooling plate. The battery pack front end cooling plate is provided with a front end cooling liquid inlet and a front end cooling liquid outlet. Each of battery pack front end inlet and battery pack rear end inlet is provided with a solenoid valve. The solenoid valve is connected with a controller by an electric signal. In the technical scheme, the periphery of each battery cell comprises four cooling liquid flow paths in adverse flowing directions, circulating and alternating occurrence of cooling liquid is realized, and a convection current is formed in the battery cell,so temperature field distribution around the battery cell is improved, and the high-temperature or low-temperature cooling liquid is avoided from being concentrated at a certain end of the battery cell while the flowing directions of all cooling liquid are the same.

The invention discloses a low-temperature partition heat exchanger adopting bypass throttling, which includes a high-pressure side pipeline and a low-pressure side pipeline. The low-temperature partition heat exchanger works in a liquid hydrogen temperature zone and a lower temperature zone. The high-pressure side pipeline is provided with at least one bypass pipeline connected with the low-pressure side pipeline, and an isenthalpic throttling element is arranged on the bypass pipeline; the working medium in the low-pressure side pipeline at the outlet of the bypass pipeline The temperature is lower than the temperature of the working fluid in the high-pressure side pipeline at the inlet of the bypass pipeline. The invention also provides a precooling type J-T refrigerator. The invention adopts the bypass throttling to change the temperature field distribution of the gas in the heat exchanger and reduce the irreversible loss. The heat exchanger is used in the pre-cooling J-T refrigerator in the liquid helium temperature zone, which reduces the temperature of the high-pressure gas before throttling, increases the cooling capacity in the liquid helium temperature zone, and improves the efficiency of the whole machine.

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.