577 results about "Thermal cycle" patented technology

The invention relates to the technical field of pipe truss tubular joint welding quality control, in particular to an assembly type pipe truss tubular joint butt-joint tensioning anti-deformation welding method and system which comprises the following steps that S1, an intersecting line is divided in the circumferential direction, and butt-joint references and deformation monitoring point positions of all partitions are calibrated; s2, circumferential distributed tensioning force application point positions are set; s3, a differential pre-tightening force gradient in the circumferential direction of the intersecting line is set, and pre-tensioning force is applied; s4, synchronous cooperation of tensioning actions and deformation control of all the to-be-welded nodes is carried out; s5, welding is conducted in a partitioned and segmented mode, and the pre-tensioning force of the partition corresponding to the intersecting line is dynamically adjusted in the welding process; and S6, after welding, the pre-tensioning force of each subarea is released, and node deformation checking and precision correction are synchronously completed after force release. According to the dynamic pre-tightening force adjusting method for partition differentiation pre-tightening force gradient distribution and welding thermal cycle time sequence matching, the residual stress peak value of the node core area is greatly reduced, and the welding quality and the structural safety of the tubular node are remarkably improved.

The invention relates to the technical field of molten salt, in particular to nitro binary molten salt and a preparation method thereof. The preparation method comprises the following steps: mixing sodium carbonate and a potassium hydroxide solution, and then adding a starch-based grafted crystal inhibitor to inhibit crystallization; adding a nitric acid aqueous solution in two stages, and introducing eutectic seed crystals to guide nucleation at the end of the first stage; crystal distribution is optimized through falling film evaporation and concentration and setting of partial reflux; and after spraying granulation, carrying out short-time melting reforming and controlled cooling in an inert atmosphere. According to the method, the composition uniformity and the structural stability of the molten salt are remarkably improved, so that the product has a melting point close to a theoretical eutectic point, low supercooling degree, high melting latent heat and excellent thermal cycling stability and corrosion resistance, and is suitable for an industrial heat storage system running for a long time.

Provided are methods and structures for keeping the integrity of layers deposited on a semiconductor wafer through a thermal cycle. Deposition of a second backside layer, or a cap, with an internal stress opposite to a first backside layer may be used to reduce bow shift of a wafer during a thermal cycle. The first backside layer may have a tensile internal stress or a compressive internal stress. The second backside layer has an internal stress opposite to the first backside layer. Each of the backside layers may be deposited by a backside deposition apparatus.

The invention relates to the technical field of manufacturing of electronic components, and discloses an LCM (liquid crystal module) backlight FPC (flexible printed circuit) micro-deformation prevention method, which comprises the following specific steps: S1, implementing large-area copper laying design on an element surface of a flexible printed circuit board, and covering a main area of the element surface with uniformly distributed copper foils to form a continuous conductive layer with consistent thickness, while the conductive layer bears electrical connection of the LED light source, the surface reflection characteristic of the conductive layer is optimized, and the phenomenon of uneven light reflection caused by surface fluctuation is reduced. Through the large-area copper laying design of the element surface and the S-shaped isolation interval layout, thermal stress is effectively guided to be symmetrically distributed in multiple directions and offset each other, plane micro-deformation of the FPC under thermal circulation is remarkably restrained, the deformation quantity is controlled within 50 micrometers, the problems of stress concentration and deformation amplification caused by linear intervals in the prior art are solved, and the reliability of the FPC is improved. And long-term stability and optical performance of the backlight module are ensured.

Provided in the present invention are a hardness evaluation method and system for a heat affected zone of a multi-layer and multi-pass welded joint of hull steel. The method comprises: establishing a finite element model of a welded joint, and acquiring welding thermal cycles at nodes in a heat affected zone of the finite element model; performing solving to obtain critical temperatures for microstructural transformations of a study object, and performing solving to obtain volume fractions of transformation products during the thermal cycles, and a volume fraction of an austenite-ferrite-pearlite mixture after all the thermal cycles; acquiring hardness values of a martensite and a bainite in each thermal cycle, and a hardness value of the austenite-ferrite-pearlite mixture after all the thermal cycles; and on the basis of the acquired hardness values of the martensite and the bainite in each thermal cycle, and the the acquired hardness value of the austenite-ferrite-pearlite mixture after all the thermal cycles, acquiring a comprehensive hardness value of the heat affected zone. The present invention can accurately reproduce heat conduction and a microstructure transformation process in a heat affected zone during multi-layer and multi-pass welding of full steel, thereby assisting engineers in evaluating a welding temperature field and the structure distribution of the heat affected zone.

The invention provides a method for prolonging the high-temperature service life of a thermal barrier coating of a hydrogen-doped gas turbine. The method comprises the steps that Ni, Co, Cr, Fe, Al, Hf, Si and Y are smelted and cast into master alloy according to the proportion; preparing the mother alloy into high-entropy alloy powder through an inert gas atomization process; high-entropy alloy powder is deposited on the surface of the high-temperature alloy substrate by adopting a high velocity oxy-fuel spraying process, and a bonding layer of the thermal barrier coating is obtained; and preparing a thermal barrier coating on the bonding layer by adopting a plasma spraying process, and carrying out vacuum heat treatment on the thermal barrier coating in advance. The high-entropy alloy bonding layer provided by the invention has better thermal stability, and can still keep strong bonding force between the ceramic layer and the bonding layer alloy after water quenching high-temperature thermal cycle service. And the transition group high-entropy alloy bonding layer is beneficial to formation of a thermal growth oxide layer, has an inhibition effect on diffusion of metal elements and coating degradation in the hydrogen-induced corrosion and high-temperature steam corrosion processes, and can prolong the high-temperature thermal shock service time of the hydrogen-doped gas turbine.

The invention relates to the technical field of double-component pouring sealant testing, and discloses a thermal conductivity testing method and system based on a double-component heat-conducting pouring sealant. The method comprises the following steps: classifying base material component proportions and curing conditions of the two-component heat-conducting pouring sealant, and determining a material curing state classification label; loading a corresponding heat conduction reference model, judging the thermal response coverage of the model, and generating correction parameters and updating the model by thermodynamic simulation when the thermal response coverage is insufficient; based on the updated model, applying heat source excitation to the sample under a preset temperature change gradient, and collecting surface dynamic temperature field distribution data; extracting a heat conduction offset position and an abnormal temperature rise node, and generating an abnormal thermal behavior identification group; obtaining temperature change correlation time of the offset position in the identification group, and calculating a thermal response delay interval and a conduction path offset; therefore, the temperature lag time length and the heat flux attenuation ratio of each layered interface of the sample in the continuous thermal cycle period are extracted, a layered thermal resistance response characteristic value is generated, and a reliable basis is provided for evaluating the heat-conducting property of the two-component heat-conducting pouring sealant.

The invention discloses a preparation method and application of a low-temperature photovoltaic welding strip, and belongs to the technical field of energy conservation and environmental protection. According to the technical scheme, the method comprises the steps that a metal precursor is dissolved in an alcoholic solution, and a nano reinforced phase is prepared through regulation and control of a surfactant, ultrasonic treatment and aging calcination; the composite solder is prepared through argon smelting according to 1-6 parts of Sn, Bi, Ag, Ni, Cu, Ge, the modified glass powder and the nano reinforced phase; 99.95% electrolytic copper is subjected to vacuum melting and cold rolling to form a copper strip; the surface roughness is controlled through alkali washing degreasing and acid washing micro-etching; immersing the preheated copper strip into a molten pool for plating; and carrying out heat preservation and rosin protection treatment. According to the method, low-temperature welding at the temperature of 150-220 DEG C is achieved, an Ag-Sn intermetallic compound layer is formed after welding, the pull-off strength retention rate of a welding spot is larger than or equal to 80% after 200 times of thermal cycles, and the method is suitable for interconnection of crystalline silicon photovoltaic battery pieces.

The invention relates to the technical field of electronic component manufacturing, solves the technical problem that interface contact resistance bounces and rises due to thermal stress mismatch, and particularly relates to an electronic component preparation parameter optimization method and system. Generating a gradient layer of which the thermal expansion coefficient continuously changes; and calculating a target thermal expansion coefficient for eliminating the interface thermal stress and an actual thermal expansion coefficient of the in-situ monitoring gradient layer based on the metal and ceramic concentration distribution function. According to the method, component continuous transition is achieved through metal / ceramic precursor dynamic flow control, continuous gradual change from metal to ceramic components is achieved, the coefficient of thermal expansion is in smooth transition in the thickness direction, and internal stress accumulation caused by material expansion difference is blocked from the source; and dynamic deposition regulation is combined to ensure that the thermal expansion gradient at any position is lower than a critical threshold value, and stripping or cracking caused by stress concentration in thermal circulation is avoided.

The invention provides an inner hole plasma spraying high-bonding-strength bonding layer and Y2O3 coating material and a preparation technology thereof. The bonding layer comprises a middle transition layer formed after Si and C on the surface of a graphite matrix are subjected to a chemical reaction. The inner hole plasma spraying high-bonding-strength bonding layer provided by the invention is composed of a silicon carbide transition layer generated by in-situ reaction of molten silicon and carbon on the surface of a graphite matrix, and can form a Si-O-M bridged bond with a subsequent ceramic coating, so that interface bonding is converted into chemical bonding from mechanical anchoring, and the bonding strength is improved. And meanwhile, by utilizing the thermal expansion characteristic of silicon carbide between graphite and ceramic, the purposes of buffering thermal mismatch stress step by step on the atomic scale, blocking high-temperature diffusion of carbon elements and endowing the coating with lasting high bonding strength and thermal cycling stability are achieved.

The invention relates to a preparation method of a low-resistance silicon carbide coating based on a molybdenum / tantalum metal electrode, which comprises the following steps: S1, substrate pretreatment: carrying out mechanical micro roughening, ultrasonic cleaning and drying on a Mo / Ta electrode, and then reducing to remove an oxidation film; s2, Si-rich nucleation: taking methyl trichlorosilane as a Si / C common source, hydrogen as carrier gas / reducing gas and nitrogen as an n-type doping source for gas supply to form a compact nucleation layer; s3, main body deposition is conducted, specifically, the temperature is adjusted to 1140-1180 DEG C, the total pressure is maintained to be 80-120 Torr, and gas supply continues to be conducted for deposition; s4, annealing and dechlorination: stopping methyl trichlorosilane, keeping hydrogen and nitrogen flushing, and then annealing; and S5, cooling and shaping: cooling and taking out the sample annealed in the step S4, and adjusting the surface roughness to a set value to obtain the low-resistance silicon carbide coating on the Mo / Ta electrode. Compared with the prior art, on the premise that conductivity is not sacrificed, atomic oxygen / oxygen ion resistance, sputtering resistance, thermal cycling stability and the like of the Mo / Ta electrode can be remarkably improved.

The invention relates to the technical field of general control or regulation systems, and discloses a heat pipe self-adaptive heat regulation and control system based on two-phase flow state prediction, which comprises a feature acquisition unit, a flow state prediction unit, a trajectory analysis unit and a control decision unit, and is characterized in that the system acquires a temperature vibration coupling signal of a controlled heat circulation loop and converts the temperature vibration coupling signal into a multi-dimensional feature vector; the working medium flow state phase change trend is predicted according to a mapping operator, a trajectory analysis unit generates an evolution trajectory through phase-space reconstruction and calculates the curvature of the trajectory in a sliding window, a control decision unit adjusts and controls a topological structure according to the trajectory curvature, and when the curvature is lower than a threshold value, a linear adjustment instruction is output. According to the method, the instability forebodes are monitored and recognized through the track curvature, a regulation and control blind area caused by phase change lag is eliminated, nonlinear oscillation generated by thermal load fluctuation is restrained, stable operation of a thermal regulation and control loop is ensured, and the stability margin of the system is improved.

The invention discloses a hydroelectric double-control system and method based on high-precision metering and intelligent control, and relates to the technical field of industrial control, and the system comprises a flow metering module, an electric appliance metering module, a heat management module, a photovoltaic power generation module, a heat dissipation adjustment module, a dynamic adjustment module, a heat circulation module and an intelligent management unit. The method comprises a flow metering step, an electric appliance metering step, a thermal management step, a dynamic adjustment step, a heat dissipation adjustment step, a photovoltaic power generation step, a thermal cycle step and an emergency heat dissipation step. The heat dissipation condition can be dynamically adjusted according to the actual heat load, and the accuracy and stability of long-term metering of the system are improved.

The present disclosure relates generally to infrastructure for renewable energy power generation, and is directed more particularly to infrastructures for thermal cycles for continuous and / or modulated power generation based, in whole or in part, on gravitational force, including infrastructures for lower grade heat recovery.

This invention discloses a composite panel, its preparation method, and its application, belonging to the field of building panel technology. The composite panel comprises, from the outside to the inside, a decorative layer, an anti-warping reinforcement layer, a foamed core layer, and a balancing layer, with a thermal expansion release structure at the edge. The anti-warping reinforcement layer uses a high-modulus glass fiber mesh to improve the panel's stiffness and suppress bending deformation; the balancing layer and decorative layer form a symmetrical structure to offset bending stress caused by temperature gradients; the thermal expansion release structure allows for micro-displacement of the panel to release thermal stress. This invention, through the synergy of the anti-warping reinforcement layer, the balancing layer, and the thermal expansion release structure, can effectively reduce the warping deformation of exterior wall cladding under thermal cycling conditions, while also possessing advantages such as weather resistance, thermal insulation, lightweight, and environmental friendliness. The preparation process is simple, suitable for large-scale production, and can be widely applied to composite imitation stone exterior wall cladding.

This invention belongs to the field of equipment life prediction technology, and discloses a method and related apparatus for predicting the remaining life of a photovoltaic inverter. The method includes: acquiring junction temperature data of the IGBT modules in the photovoltaic inverter under test; determining the number of junction temperature thermal cycles of the IGBT modules in the photovoltaic inverter under test based on the junction temperature data; calculating the cumulative damage of the IGBT modules in the photovoltaic inverter under test based on the number of junction temperature thermal cycles; and calculating the remaining life prediction result of the photovoltaic inverter under test based on the cumulative damage of the IGBT modules. This invention can more accurately predict the remaining life of the IGBT modules, and thus more accurately predict the overall remaining life of the photovoltaic inverter. The prediction process does not require extensive data collection and training of the prediction model, effectively reducing the difficulty of life prediction and improving prediction efficiency.

The application discloses a galvanometer scanning distortion real-time correction method and system based on visual feedback, relates to the technical field of galvanometer scanning, and comprises a preset standard scanning track, acquisition of ideal scanning coordinates of each feature point in the standard scanning track under a galvanometer scanning coordinate system, and a track image corresponding to a moment and galvanometer angle data when the standard scanning track is scanned by the galvanometer. The application compensates inherent static distortion caused by optical geometry and assembly error by means of an initial static linear distortion correction table and an initial static nonlinear distortion correction table, and when irreversible thermal drift in dynamic thermal distortion accumulates beyond the standard, the increment is automatically updated to the static correction table, permanent deformation is converted into static compensation, and the reversible thermal distortion part is automatically rolled back when the galvanometer is stopped and cooled, so that the high-efficiency elimination capacity of static calibration on inherent distortion is retained, and irreversible deformation generated by long-term thermal cycle can be dynamically adapted.

The application belongs to the technical field of vehicle battery heat dissipation, and discloses a vehicle battery heat circulation system and a design method of the vehicle battery heat circulation system. The vehicle battery heat circulation system comprises a battery support module, an auxiliary heat dissipation module and a positive heat dissipation module. The battery support module comprises a battery support element, and a battery monomer is sleeved in the battery support element. The auxiliary heat dissipation module comprises a heat dissipation fin arranged in a channel of the battery support element. The positive heat dissipation module is arranged at intervals from the battery support module and can deliver cooling fluid to the battery support module. The application adopts the design of a monomer external heat dissipation unit, thereby separately dissipating heat for the battery monomer, accurately dissipating heat and having strong heat dissipation directivity. Moreover, the application can further dissipate heat through the heat dissipation fin, thereby maximizing the heat dissipation efficiency. Moreover, the heat dissipation performance of the vehicle battery heat circulation system designed by the design method of the vehicle battery heat circulation system can be greatly improved.

The application discloses a heat exchange tube for a vanadium liquid flow battery and a preparation method and application thereof, and belongs to the technical field of liquid flow battery heat exchange. The base material of the heat exchange tube for the vanadium liquid flow battery is any one of an industrial pure titanium tube, a titanium alloy tube or a nickel-based alloy tube; the outer surface of the heat exchange tube is covered with a protective layer, and the protective layer is a polymer coating or a metal coating; wherein the outer surface of the polymer coating has a micro-crease structure. The heat exchange tube for the vanadium liquid flow battery has excellent corrosion resistance and thermal cycle stability, avoids the problem that metal ions in the base material are easily dissolved out, leading to ion pollution of an electrolyte, and thus the safety and stability of the vanadium liquid flow battery are effectively improved.

The invention relates to the technical field of magnetic suspension compressor assembly, and particularly discloses a magnetic pollution source prevention and control optimization method in a magnetic suspension compressor assembly process, which comprises the following steps: in a pretreatment stage of magnetic suspension compressor assembly, dynamically optimizing thermal cycle parameters in a low-temperature environment by adopting a self-adaptive genetic algorithm; ferromagnetic impurities hidden in microdefects of the compressor component are accurately induced to be released in advance; carrying out feature extraction and pattern recognition on the released impurity signals in combination with wavelet packet transformation and a neural network algorithm; according to the method, a low-temperature thermal cycle process optimized by a self-adaptive genetic algorithm is constructed in the pre-assembly treatment stage, ferromagnetic impurities hidden in microcracks are accurately induced to be released in advance, and accurate removal of the impurities before entering the assembly link is realized by combining wavelet packet transformation and targeted pulse demagnetization driven by a neural network; the limitation that impurities in the microdefects cannot be touched by a traditional cleaning and demagnetizing method is broken through, and the hidden danger of magnetic pollution which cannot be found by initial detection is eliminated from the source.

The invention belongs to the technical field of semiconductor packaging, and provides an online monitoring method and system for thermal cycle failure of TSV copper salient points, and the method comprises the steps: synchronously collecting resistance data and acoustic emission signals of a test structure containing the TSV copper salient points, and writing the resistance data and acoustic emission signals into a data cache region; calculating a resistance change rate relative to an initial value based on the resistance data in the data cache region, and generating a primary trigger event when the resistance change rate exceeds a real-time judgment threshold value; in response to the primary trigger event, estimating physical coordinates of the abnormal activity; scanning the region of interest taking the physical coordinates as the center to obtain local deformation data, and fusing the physical coordinates, the local deformation data and the resistance change rate to generate a failure diagnosis conclusion; and based on the failure diagnosis conclusion, carrying out backtracking analysis on historical data before the primary trigger event occurs in the data cache region, and adaptively adjusting a real-time judgment threshold, so that real-time monitoring and intelligent diagnosis of the TSV copper bump thermal cycle failure are realized.

This invention discloses a method and device structure for improving the electrical transport properties of etched graphene quantum dots, belonging to the field of low-temperature transport testing technology. The method includes the following steps: fabricating etched graphene quantum dot devices; performing preliminary electrical transport characterization by cooling; and undergoing several cycles of "sample electrode grounding protection – heating to above 200K or room temperature – cooling again – electrical transport characterization" to improve the electrical transport properties of the device, enabling subsequent observation and manipulation of the quantum dot's fine charge stability map. The optimized method of this invention, through several heating and cooling thermal cycles, successfully adjusts the coulomb blocking region of the graphene quantum dots from hundreds of volts towards zero, facilitating the application of a gate voltage. Furthermore, the charge stability map of the two quantum dots is significantly optimized and improved, greatly increasing the yield of etched graphene quantum dot devices. In addition, the optimized method of this invention is simple to operate and has significant effects, making it suitable for widespread application.

A turbine blade and related method are disclosed. The blade includes an airfoil body having a radial outermost surface relative to a turbine rotor, a bond coat over the radial outermost surface, and an outermost abrasive layer over the bond coat. The outermost abrasive layer may include a graded oxide ceramic layer or a graded metal ceramic layer. In any event, the outermost abrasive layer is vacuum heat treated to harden the layer, resulting in increased rub and improved clearance between the blade tip, creating a smaller tip gap and lower leakage compared to conventional systems. The heat-treated abrasive layer is also resistant to oxidation at higher temperatures, e.g., greater than 1090° C. (˜2000°F.), caused by the increased use of higher temperature fuels, such as hydrogen. The vacuum heat treatment also results in thermal cycle testing improvements.

The invention provides a thermodynamic cycle system applied to a steam turbine. The thermodynamic cycle system comprises a boiler, the steam turbine and a vortex tube. The boiler generates steam with first temperature; the steam turbine discharges a first path of steam with second temperature to the vortex tube, a second path of steam with second temperature is discharged to the liquid inlet of the boiler, the vortex tube separates the first path of steam into hot steam with third temperature and cold steam with fourth temperature, and the hot steam with third temperature is recycled to the steam turbine; the steam turbine drives mechanical equipment through hot steam with the third temperature, cold steam with the fourth temperature is discharged to the liquid inlet of the boiler, the third temperature is higher than the second temperature, and the fourth temperature is lower than the second temperature; wherein the cold steam with the fourth temperature cools the second path of steam to generate cooling liquid, the cooling liquid enters the boiler from a liquid inlet of the boiler, the steam with the first temperature is generated after heating, a vacuum water ring pump and a condenser are omitted, and energy is saved.

The present application relates to the technical field of vehicle thermal management. Provided are a thermal management system and a vehicle having same. The thermal management system comprises a power battery thermal cycle loop, an engine thermal cycle loop and an electromagnetic valve; the engine thermal cycle loop comprises a main pipe, a passenger compartment warm air pipe and a battery heat exchange pipe; the electromagnetic valve comprises a first valve port, a second valve port, a third valve port, a fourth valve port and a fifth valve port, the first valve port being in communication with the main pipe, the second valve port being in communication with the main pipe, the first valve port being located at an upstream end of the second valve port, the third valve port being in communication with an inlet end of the passenger compartment warm air pipe, the fourth valve port being in communication with an outlet end of the passenger compartment warm air pipe, the outlet end of the passenger compartment warm air pipe being in communication with an inlet end of the battery heat exchange pipe, and the fifth valve port being in communication with an outlet end of the battery heat exchange pipe. The present application enables regulation at different ratios to simultaneously meet the heating and cooling control requirements of passenger compartments and battery systems, thereby achieve effective utilization of vehicle energy and optimization of engine compartment spaces.

The invention relates to the field of process simulation, and discloses an additive manufacturing numerical simulation method based on a thermal cycle curve, and the method comprises the steps: obtaining the physical performance parameters of a target component material; based on the physical performance parameters and related constraints of additive manufacturing, high-fidelity thermal simulation of the additive manufacturing process is carried out on the representative local area of the target component to obtain thermal historical data of the local area in the additive manufacturing process; extracting at least one thermal cycle curve representing the thermal history of the target component material from the result of the high-fidelity thermal simulation; establishing a global model of the target component; applying the thermal cycle curve as a thermal load to the global model; and based on the thermal cycle curve and clamping and heat dissipation boundary conditions of the target component, performing thermal-mechanical coupling analysis on the global model to predict stress and deformation of the target component after additive manufacturing is completed. The micro-channel additive manufacturing method can effectively improve the finished product quality of micro-channel additive manufacturing.

An ecological insulation board based on a foaming process comprises at least one core layer, and the core layer is made of biological resin, a foaming agent, a curing catalyst and reinforcing filler. Wherein the weight percentage content of the biological resin is 60%-80%, the weight percentage content of the foaming agent is 5%-10%, the weight percentage content of the curing catalyst is 5%-10%, and the weight percentage content of the reinforcing filler is 3%-10%. The ecological insulation board can improve compressive strength, dimensional stability and heat resistance. And meanwhile, by forming a chemical crosslinking thermosetting matrix resistant to environmental degradation, long-term stability and mechanical properties are jointly promoted. The cross-linked structure can enhance the dimensional stability of the plate, thereby preventing warpage caused by thermal cycle or humidity change.

A bond coat material providing unexpectedly high resistance to thermal cycle fatigue and sulfurization and unexpectedly extended thermal cycle life in the high temperature environment of a gas turbine engine component in the presence and absence of sulfur contains: a) 10 to 30 weight percent chromium, b) at least one of tantalum and molybdenum in a total amount of 3 to 15 weight percent, c) 5 to 13 weight percent aluminum, d) 0.1 to 1.4 weight percent silicon, e) 0.1 to 0.8 weight percent yttrium, f) 0 to 1.2 weight percent carbon, g) 0 to 1 weight percent dysprosium, h) 0 to 1 weight percent cerium, i) the balance being nickel, and the percentages of a) through i) adding up to 100 weight percent. The total amount of tantalum and molybdenum and the amounts of aluminum and silicon are each critical to avoid delamination of the top coat from the bond coat.

The invention discloses a deacidification heat cycle system for high-acid-value rice oil. The deacidification heat cycle system comprises a grease treatment unit, a deacidification medium treatment unit, a deacidification unit, a condensation recovery unit and a fatty acid recovery treatment unit, the grease treatment unit preheats rice oil by using gas-phase waste heat in the deacidification unit, the deacidification medium treatment unit preheats the rice oil by using waste heat of high-temperature oil in the deacidification unit, and the fatty acid recovery treatment unit recovers fatty acid which is used as fuel of the system; meanwhile, a negative pressure environment is formed in the deacidification tower under the control of the vacuum pump, so that the deacidification temperature in the deacidification tower can be reduced, and waste heat of a gas phase outlet in the top of the deacidification tower and waste heat in high-temperature oil at the bottom of the deacidification tower are distributed as heat sources for preheating the high-acid-value rice oil and a deacidification medium through the condensation recovery unit; meanwhile, fatty acid formed through condensation is used as fuel of the steam generator, a closed loop of energy utilization is formed, energy and waste heat in the deacidification process are utilized to the maximum extent, and energy consumption in the whole deacidification process is effectively reduced.

This invention discloses a method for combining CNC high-precision high-temperature resistant insulating substrate engraving with tin-copper alloy printed circuit 3D printing, belonging to the field of high-power circuit carrier manufacturing technology. The invention uses 99.7% alumina ceramic or silicon nitride ceramic as the insulating substrate, achieving high-precision structural forming of ±0.005-0.025mm through CNC layer engraving. Sandblasting, roughening, sensitization, activation, and pre-plating surface modification enhance interfacial adhesion. CuSn10 tin bronze is used as the printing material, and the circuit is formed by SLM or FDM 3D printing at a sintering temperature of 850-900℃, achieving a forming density ≥98.71%. Through stepped heating sintering and high-temperature resistant inorganic adhesive curing, the ceramic substrate and tin-copper alloy circuit are integrated. The circuit carrier obtained by this invention has a long-term temperature resistance of ≥1600℃, a volume resistivity of ≥10¹⁴Ω·cm, a current carrying capacity of 15.6A for 3mm lines, and an adhesion strength retention rate of ≥95% after 1000 thermal cycles. The temperature rise is 15~20℃ lower than that of traditional PCBs. It is suitable for high-load, high-current scenarios such as industrial power supplies and new energy power control. It is compatible with processes and has complete industrial support, and has significant technical and economic feasibility.