149 results about "Thermal engineering" patented technology

Means to use and combine methods of thermal engineering, plasmonics, photonics, electronics, photovoltaics, optical transfer, heat transport, light transport, catalysis and chemical reactions individually or in any combination for the enhancement or generation of solar, optical, electrical or any form of energy. The present disclosure further concerns a means to use at least a form of electromagnetic excitation or light-matter interactions in a structure or material having one or more addressable frequencies to generate the exchange of thermal, kinetic, electronic or photonic energy. The present disclosure further concerns a means to use at least a form of electromagnetic excitation or light-matter interaction, including solar or laser energy to generate localized conditions that enable initiation and spatial and temporal control of catalysis, chemical reactions, deposition, growth, synthesis, photocatalysis, photosynthesis, chemical catalysis, photochemical catalysis, photovoltaic, electrocatalysis and catalytic processes.

The invention discloses a pellet production method based on prediction of compressive strength of pellets in a rotary kiln. The method comprises the following steps: 1) collecting related operation parameters of the rotary kiln; 2) establishing a motion model of the pellets in the rotary kiln; 3) measuring and calculating average residence time T of the pellets in the rotary kiln; 4) measuring flame length FL and the distribution of burning rate Rfuel of fuel in the flame length; 5) measuring the distribution of temperature of the pellets Tp along the kiln length direction z in the rotary kiln; 6) measuring a predicted value of the strength of the pellets; and 7) performing online control on process parameters of the rotary kiln according to the predicted value Qp of the compressive strength of the pellets. By using the method for online prediction of the thermal engineering state and the strength of the pellets in the rotary kiln, the transparency of the production process is increased, the control difficulty caused by information hysteresis is reduced, the risks of low finished product rate, accretion of the rotary kiln and the like caused by insufficient strength of the pellets can be reduced, and the thermal engineering operation of the rotary kiln is optimized in an online manner; and the energy consumption can be reduced and the production benefits can be improved.

A high-strength anti-stripping castable with a homogeneous material as an aggregate for kilneye and a preparation method thereof belong to high-temperature refractory material in the technical field of building materials. The castable comprises the following components, by weight: 60-75% of a homogeneous material, 8-12% of silicon carbide, 3-11% of an alumina micro powder, 4-6% of a silicon micro powder, 6-8% of sub-white corundum, 0-4% of white fused corundum, 4-6% of a binder pure calcium aluminate cement, and 0.25-0.4% of an admixture. The invention utilizes the characteristics of the homogeneous material that it can well form into a mullite phase at high temperature, and reduce enrichment of calcium and iron compounds. The high-strength anti-stripping castable for kilneye is prepared by using the homogeneous material as the aggregate, adding the alumina micro powder, the silicon carbide particles and micro powder, and using silicon micro powder and corundum micro powder as the matrix, pure aluminate cement as the binder, and interacted water and admixture as the additive. After casting, the pouring material provided by the present invention has excellent mechanical properties, thermal shock number up to 40 times, and excellent resistance to spalling of cement kilneye under complex thermal engineering, and is suitable for dry cement kilneye and positions with same thermal conditions.

The invention discloses a hypersonic velocity wing robust optimization design method considering machining errors and belongs to the technical field of optimization design. The method comprises the following steps: fully considering geometric machining errors existing in hypersonic velocity wing design, and realizing quantitative characterization of a machining error coefficient by utilizing an interval vector under the condition that a probability density function of machining error parameters is unknown; establishing aerodynamic configuration of the hypersonic velocity wing through a parametrization method, and performing nonstructured surface mesh division; combining an interval parameter vertex method with an aerodynamic/thermal engineering algorithm, and calculating upper and lower bound of intervals of total stagnation point heating capacity and lift-drag ratio of the wings; and on the basis, establishing a multi-target interval robust optimization model, and performing optimization design on the wing shape by using a genetic algorithm. The numerical result shows that according to the method, the total stagnation point heating capacity of the designed wing is reduced under the precondition that lift-drag ratio constraint of the wing is maintained; meanwhile, a fluctuation range of the total stagnation point heating capacity is narrowed, and a new thought is provided for shape design of the hypersonic velocity wing.

The invention discloses a method for hypersonic wing aerodynamic/thermal analysis in view of geometric uncertainty. A sample point of uncertain parameters is established according to a Bernstein polynomial approximation model; an aerodynamic/thermal response value, corresponding to a wing shape, of the sample point is calculated by utilizing an aerodynamic/thermal engineering algorithm in a given flight condition; and a fitting coefficient of the polynomial approximation model is obtained by applying a least square method. Based on this, a maximum/minimum value point, about each uncertain parameter, of the aerodynamic/thermal response value is solved by utilizing the established polynomial approximation model; combination is performed to form a vector of a maximum/minimum point; and finally an interval upper bound and an interval lower bound of the aerodynamic/thermal response value are obtained, thereby realizing the hypersonic wing aerodynamic/thermal analysis in view of the geometric uncertainty. An interval boundary obtained in the method is well matched with that obtained in a Monte-Carlo method, and interval envelopment can be realized, so that a new idea is provided for overall design of the hypersonic wing shape.

The present invention discloses a gas-liquid two phase thermal-engineering experiment heat loss calibration method and calibration device, the device includes a preheater connected between an experiment section inlet and an experimental loop, a wall temperature measurement device on the experiment section outer wall and a flowmeter; the experiment section inlet and an experiment section outlet are provided with temperature measuring and pressure measuring devices, and the flowmeter is arranged between the experiment section inlet and the experimental loop, or the experiment section outlet and the experimental loop. The calibration method is as follows: first, the power of the preheater is adjusted for control of thermal-engineering experiment parameters of an introduced single-phase fluid to achieve the purpose containing two-phase formal experiment wall temperature range, a relationship formula or a relationship diagram of wall temperature experiment section and heat dissipation amount can be obtained by fitting, the wall temperature is measured in a formal two-phase thermal-engineering experiment, and the heat dissipation amount can be determined according to the relationship formula or the relationship diagram, so that experiment section heat loss amount can be determined under the conditions of gas-liquid two phase experimental conditions, and a support is provided for accurate determination of the flow working medium heat absorption amount and acquisition of reliable experimental data, and the two-phase thermal-engineering experiment accuracy and reliability can be enhanced.

The invention discloses a security isolation anti-misoperation system. The anti-misoperation system comprises a hardware system and a software system; the hardware system comprises a management host, monitoring equipment, an intelligent key, a lockset, a grounding wire management cabinet and a grounding wire; the software system comprises a work ticket module, an operation ticket module, an electrical temporary grounding wire module and a thermal engineering signal compulsory single module; the management host, the intelligent key and the grounding wire management cabinet are connected with each other through a network; and the software system is operated in the management host and the intelligent key. According to the invention, the complex management link can be simplified; automatic retrieval and identification of an isolation point can be realized; the operation link can be reduced; and the security assurance of overhaul workers can be improved.

The invention discloses a prefabricated sandwich-type thermal-insulation wallboard. The prefabricated sandwich-type thermal-insulation wallboard comprises three layers including a decorative protective layer, a thermal-insulation layer, and a structure layer; the three layers are connected so as to form an integral whole via shear connectors; the structure layer is mainly used for bearing wallboard loading; the decorative protective layer is used for providing a wallboard decorative surface; and the thermal-insulation layer is used for ensuring thermal insulation performance of the prefabricated sandwich-type thermal-insulation wallboard. According to a preparation method, ceramsite concrete is used for pouring the decorative protective layer so as to reduce the self weight of the prefabricated sandwich-type thermal-insulation wallboard, and improve the thermal engineering performance of the prefabricated sandwich-type thermal-insulation wallboard; the thermal-insulation layer is prepared from EPS foam boards, and is capable of delaying transmission of heat energy among the inner and outer layers of the prefabricated sandwich-type thermal-insulation wallboard effectively as a thermal insulator in the prefabricated sandwich-type thermal-insulation wallboard; the structure layer is made from C30 concrete, and is mainly used for bearing wallboard loading. The decorative protective layer and the structure layer of conventional prefabricated external wallboard are both made from common concrete. The materials of the prefabricated sandwich-type thermal-insulation wallboard are widely available; processing and preparation are simple; performance is reliable; defects of conventional prefabricated external wallboards such as high self weight and poor thermal engineering performance are improved greatly; the prefabricated sandwich-type thermal-insulation wallboard can be taken as a prefabricated external wallboard; and application prospect is promising.

The invention discloses an automatic production line of a partition plate. The automatic production line of the partition plate is used for forming the partition plate on a mould and comprises a hollow pipe placing device, a steel bar placing device and a conveying device, wherein the conveying device respectively conveys the mould to the hollow pipe placing device and the steel bar placing device; the hollow pipe placing device is used for placing a hollow pipe on the mould on the conveying device; and the steel bar placing device is used for placing steel bars on the mould on the conveying device. According to the automatic production line of the partition plate, the hollow pipe is placed through the hollow pipe placing device and the steel bars are placed through the steel bar placing device, so that the production machinery of the partition plate replaces thermal engineering, and the production efficiency is improved.

The invention discloses an equivalent thermal resistance detection device and detection method of thermal insulating coating. Thermal couplers and solar radiation sensors are both in signal connection with a detection instrument; and the detection instrument is in signal connection with a calculating terminal. The detection method comprises the following steps of: respectively adhering thermal couplers with metal sheets to the middle parts of the outer surfaces of a plurality of outer walls by using adhesive tapes; after the adhesive tapes are thoroughly dried and solidified, coating the thermal insulating coating and common paint on the outer surfaces of the outer walls respectively; enabling the outer walls to be detected to receive the sunshine radiation, and acquiring data by using the solar radiation sensors; after the solar radiation sensors constantly acquire for seven days, selecting valid data of four days and transmitting to the calculating terminal; and reckoning out the equivalent terminal resistance of the thermal insulating coating on the detected walls with the combination of calculating software. In such a mode, data can be accurately acquired to join in the calculation with the combination of an on-site thermal engineering detection method aiming at the conditions necessary for on-site detection of the thermal insulating coating, curves of output temperature are effectively analyzed, and the equivalent thermal resistance of the thermal insulating coating is reckoned.

The invention discloses a method and device for regulating the temperature of a hearth of a ternary ignition furnace, and relates to the technical field of sintering and ignition. The method includes the steps of firstly, obtaining current state parameters of the ternary ignition furnace and preset parameters; secondly, calculating the target flow of coal gas which needs to enter the hearth of the ternary ignition furnace through a thermal engineering mathematical model according to the current state parameters and the preset parameters; thirdly, conducting flow closed-loop control on a coal gas regulating valve of the ternary ignition furnace according to the calculated target flow of the coal gas so that the regulation of the temperature of the hearth of the ternary ignition furnace can be achieved, wherein the preset parameters include a preset target temperature of the hearth of the ternary ignition furnace. According to the method and device, the target flow of the coal gas which needs to enter the hearth so as to enable the temperature of the hearth of the ternary ignition furnace to reach the preset target temperature is calculated through the thermal engineering mathematical model, only the closed-loop control needs to be directly conducted on the flow of the coal gas, and therefore the response time for enabling the temperature of the hearth to reach the preset target temperature is shortened, and the hysteresis is reduced.

The invention relates to the technical field for thermal engineering, and discloses a sleeving method for multi-layer screw-type heat exchanging tube bundles. The sleeving method for the multi-layer screw-type heat exchanging tube bundles comprises the following steps: first bearing strips are arranged on first layer heat exchanging tube bundles; an inner barrel is sleeved with the first layer heat exchanging tube bundles; fixing strips are arranged outside the first layer heat exchanging tube bundles; second bearing strips are arranged on second layer heat exchanging tube bundles; the first layer heat exchanging tube bundles are sleeved with the second layer heat exchanging tube bundles; the fixing strips are arranged outside the second layer heat exchanging tube bundles; other heat exchanging tube bundles are sleeved; the outer sides of outer layer heat exchanging tube bundles are sleeved with an outer barrel; the bearing strips are connected with a suspension ribbed plate arranged on the top of the inner barrel. According to the sleeving method for the multi-layer screw-type heat exchanging tube bundles, sleeving on a screw-type heat exchanging tube bundle vapor generator of flexible supporting can be smoothly achieved, the scratch on the surfaces of the tube bundles by supporting parts of the heat exchanging tube bundles can be effectively avoided, and the screw diameter accuracy of the fixed heat exchanging tube bundles is guaranteed.

The invention discloses an automatic control device and a control method thereof for a heat balance environment in a thermal experiment. The outer insulation layer outside the wire, the thermal compensation power supply supplying power to the thermal compensation wire, two thermocouples for collecting the temperature signal of the outer wall of the experimental pipe section and the outer wall of the inner insulation layer, and adjusting the thermal compensation according to the temperature signals collected by the two thermocouples The feedback circuit of the heating power of the wire, the thermal compensation power supply and the thermal compensation wire form a series loop, and the feedback circuit is connected to the series loop. The thermal compensation wire of the present invention adopts electric heating for thermal compensation, and the power of the thermal compensation wire can be automatically adjusted through the temperature of the outer wall of the experimental pipe section and the outer wall temperature of the inner insulation layer to achieve the thermal balance condition and realize the accurate measurement of the fluid heating power, which is further experimental data Accurate analysis provides a reliable guarantee, improving the accuracy and reliability of thermal experiments.

The invention discloses a process design collaboration management system based on a three-dimensional model. The system comprises a process data management unit, a process design task distribution unit, a CAD (computer-aided design) data distribution unit, an MBOM (manufacturing bill of materials) structure generation unit, a process instruction book generation unit and a data integration unit. Digital machining, thermal engineering and assembly processes are designed and managed, process design tasks are distributed to different organizations, different departments and different staff and processed, collaborative process design and management are realized, unified management process resource bases, standard bases and tooling bases are realized, the system is integrated with a downstream system, machining information and assembly information are transmitted to the downstream system, and manufacturing of factories is conveniently instructed.

The invention provides a blast furnace hot-blast stove orifice combination brick structure relating to the technical field of thermal engineering. Based on a key technology of building an elliptical ring by ingeniously using T-shaped and L-shaped refractory bricks, according to the practical situation of the diameter size of a blast furnace hot-blast stove orifice, the combination brick structure is composed of an outer ring, a neighboring outer ring, an inner ring and a neighboring inner ring, wherein the outer ring and the neighboring outer ring of which the inner diameters are shaped like an ellipse are built by using one T-shaped refractory brick for the ring top and the ring bottom respectively and using L-shaped refractory bricks both sides of the ring; the inner ring and the neighboring inner ring of which the outer diameters are shaped like an ellipse are built by using sealed refractory bricks; the outer ring and the neighboring outer ring as well as the inner ring and the neighboring inner ring are fixedly connected by refractory cement in a mutual sticking state; the elliptical ring of the outer ring and neighboring outer ring is fixedly connected by refractory cement in a state of being sleeved with the inner ring and the neighboring inner ring; and the bending angle of the L-shaped refractory bricks is 1-180 degrees. The invention is used for the manufacturing of a blast furnace hot-blast stove orifice. The combination brick structure is scientific and ingenious in design, high in production efficiency and excellent in quality, and can resist a harsh environment.

The invention relates to a vertical furnace with a sectional heating combustion chamber and a heating method of the vertical furnace. The vertical furnace comprises the combustion chamber, a carbonization chamber, a regenerative chamber, a furnace roof and a small flue, wherein the upper part and the lower part of the combustion chamber respectively communicate with the upper part and the lower part of the regenerative chamber; a coal gas first-section supply opening is formed in the bottom of a vertical flue of the combustion chamber; a coal gas second-section supply opening is formed in the middle of the vertical flue of the combustion chamber; a coal gas third-section supply opening is formed in the top of the vertical flue of the combustion chamber; and the combustion chamber is provided with a central partition wall which divides the combustion chamber into a left combustion chamber and a right combustion chamber in the longitudinal direction. High-heating uniformity of the vertical furnace can be improved effectively, the purpose of increasing the height of the carbonization chamber is achieved, and large-scale development of the vertical furnace is realized; meanwhile, combustion temperature and combustion intensity of the bottom and the top of the combustion chamber can be reduced, and the temperature of the high temperature point is reduced, so that generation of NOx is reduced, and environmental protection is facilitated further; and the vertical furnace is convenient to operate and adjustable in air flow, and facilitates improvement of production efficiency and thermal engineering efficiency.

The invention discloses a silicon-magnesium wallboard and steel structure connecting joint structure for a steel structure building. The silicon-magnesium wallboard and steel structure connecting joint structure comprises a silicon-magnesium wallboard exterior wall surface layer structure, a silicon-magnesium wallboard interior wall surface layer structure, a silicon-magnesium wallboard board bottom mounting structure, a silicon-magnesium wallboard board top mounting structure, an H-shaped steel beam groove structure connected to a silicon-magnesium wallboard, a silicon-magnesium wallboard splicing seam structure, a silicon-magnesium wallboard and corner steel column joint structure, a silicon-magnesium wallboard and exterior wall steel column joint structure, and the like. The silicon-magnesium wallboard and steel structure connecting joint structure for the steel structure building provided by the invention is simple in structure, is convenient in operation, is firm in mounting, is good in formed appearance, meets requirements of duration of fire resistance of the structure, and meets basic requirements of the structure, thermal engineering, water resistance, fire resistance, thermal insulation, heat insulation, sound resistance, architectural models and the like.

The invention provides an ultra-supercritical coal-fired boiler unit start adjusting method and system. The method includes the steps of igniting a coal-fired boiler in an ultra-supercritical coal-fired boiler unit, sequentially conducting a coal-fired boiler no-load running test and a coal-fired boiler load running test, collecting the running working condition data of a coal-fired boiler in the no-load running test and the load running test respectively, setting a safety door in the ultra-supercritical coal-fired boiler unit on the basis of the data, conducting combustion adjustment and thermal engineering automatic operation, controlling the full-load running preset time of the coal-fired boiler, collecting full-load running working condition data, and conducting combustion adjustment on the ultra-supercritical coal-fired boiler unit according to the full-load running working condition data. In the whole process, the complete ultra-supercritical coal-fired boiler unit start adjusting mode is adopted, the ultra-supercritical coal-fired boiler unit start adjusting process can be guided and controlled, and the start effect of the ultra-supercritical coal-fired boiler unit and the safe running of a generator set are ensured.

The invention discloses a method for installing and designing an oil pipeline in an alpine frozen soil area, which comprises the following steps of: determining the burying depth of a pipe frame foundation according to the geological condition of the frozen soil area, and checking the stability, the foundation bearing capacity, the deformation and the thermal engineering of the pipe frame foundation; determining the lengths of an evaporation section, a condensation section and a heat insulation section of the hot rod, and determining the burying distance of the hot rod according to the effective cooling radius of the hot rod; the height of a column of the pipe frame system is determined, and the strength, stability and deformation of the column and a beam in the pipe frame system are analyzed and calculated; determining a pipe frame support, modeling a pipeline installation process, performing numerical simulation analysis on the maximum stress and allowable stress of the pipeline under different stress types and different working conditions, and determining a mode and a position of pipeline stress compensation; a ground temperature monitoring system is arranged around the pipe frame foundation and used for monitoring the frozen soil temperature and the freezing and thawing conditions under the pipe frame foundation in real time; According to calculation and analysis results ofthe steps 1-5, an installation design scheme of the oil pipeline in the alpine frozen soil area is formed.

The invention discloses a heat loss measuring device of system thermal engineering experimental equipment and a method thereof. The method includes: step 1, determining a device of the system thermalengineering experimental equipment and covering the outer side of the device with thermal insulation cotton; step 2, injecting one or more components-containing working media into the device, and recording mass mf of an individual component and specific heat capacity cp of fluid; step 3, turning off an upper isolation valve and a lower isolation valve, and conducting loop isolation on the device to form an area to be measured; step 4, heating the device in the area to be measured, stopping heating when the temperature of the device reaches a preset temperature, and then timing; step 5, conducting real-time measurement, storing a temperature Tso at an outer wall temperature measurement point, a temperature Tsi at an inner wall temperature measurement point and a temperature Tf of the fluidin the device, and stopping the measurement when the temperature of the device is reduced to the lower limit temperature; step 6: using a data processing system to obtain solid wall mass ms, solid wall specific heat capacity cps, a temperature Tsi at the outer wall temperature measurement point, and a temperature Tso at an inner wall temperature measurement point from the area to be measured.

The invention discloses a sensing heating overheating device for a steam heat storage device. The sensing heating overheating device comprises a steam heat storage device, a steam inlet switch and a connection pipeline. The sensing heating overheating device is characterized by being composed of a steam collecting disc, a sensing heating pipe, a heat insulation layer, a superheater outer wall, a temperature controller, a coil, a steam distribution disc and the like. The sensing heating overheating device is communicated with a steam heat storage device through a connection pipeline, and the steam inlet switch is arranged on the connection pipeline. Steam output by the steam heat storage device is heated by the sensing heating overheating device, and overheating steam is produced to be supplied to a power generator to generate power. The sensing heating overheating device utilizes sensing heating, is fast in heating speed, high in efficiency, small in energy consumption, easy in control of heating temperature and capable of avoiding overheating. No impurity is mixed in the heating process, and heating engineering automation is easy to achieve.