2936 results about "Convection flow" patented technology

The invention provides a numerical simulation method suitable for a three-dimensional spherical flame, and belongs to the field of electrical data processing, and the method comprises the steps: building a computational domain model according to the requirements of a computational scene, dividing a grid unit, and obtaining the node information of the required grid unit; establishing a Navier-Stokes equation set of a coupling chemical reaction and diffusion process model; estimating convection and diffusion term variable gradients in the conservation equation; calculating a time step length according to a set Kulang number, and carrying out time advancing; estimating an expected value of a velocity field, and solving a predicted velocity; the divergence of the velocity field and the correction value of the pressure field are calculated; obtaining a corrected velocity field; a self-adaptive grid means is introduced to dynamically adjust the grid resolution; performing iterative correction for multiple times until the velocity field and the pressure field converge to convergence conditions; performing spherical flame numerical simulation, and monitoring the convergence of the solution. According to the invention, the flame dynamics and cellular instability of the premixed spherical expansion flame can be reproduced.

The invention relates to the technical field of intelligent control, and discloses a self-adaptive temperature curve control system for high-temperature alloy vacuum casting, which comprises a sensing module, a control module and a control module, and is characterized in that the sensing module acquires multi-point temperature information and preprocesses the information to obtain temperature distribution in a furnace; the acquisition module obtains vacuum environment parameters. The simulation module establishes a three-dimensional dynamic coupling model based on heat conduction, radiation, convection and phase change heat effect, and obtains a real-time temperature evolution prediction result. The generation module obtains a target temperature curve of the corresponding stage. The prediction control module collects a real-time temperature evolution prediction result and a target temperature curve, deviation calculation and trend analysis are carried out, and a heating power and cooling flow control instruction is generated. And collecting product feedback errors and carrying out self-learning correction on prediction model parameters to obtain an optimized control output result. The control and optimization of the high-temperature alloy vacuum casting temperature field are realized, and the structure uniformity of castings and the quality stability of finished products are improved.

The invention discloses a communication network power distribution cabinet convenient for heat dissipation, and relates to the technical field of power distribution cabinets, and the power distribution cabinet comprises a composite mechanism. According to the communication network power distribution cabinet convenient to dissipate heat, through the design of a composite mechanism, the box body shell is used for storing electronic components, after long-time operation, the temperature in the box body shell rises, hot gas rises, and then the hot gas flows to the processing mechanism from the circular groove, so that the heat dissipation effect is achieved, and the internal temperature of equipment is reduced; the ventilation mechanisms are arranged on the two sides of the box body shell, so that the convection effect is achieved, the cold air flowing effect is improved, the cold air is located at the low position with the high density, hot air is squeezed upwards after entering the box body shell, the discharging speed is increased, and the heat dissipation efficiency is improved. The box body shell is supported through the supporting assembly, so that the effect of reducing deformation of the box body is achieved, and internal electronic elements are protected.

The invention belongs to the technical field of hypersonic flight vehicle design, and discloses a design method for a thermal experiment model of a front body and an air inlet channel of a high-speed wind tunnel. The design verification method comprises the following steps: determining an overall structure and design requirements; determining a heating structure; determining a pressure measuring point and a temperature measuring point; determining an independent temperature control adjusting device; verifying the influence of the heat insulation groove on temperature gradient distribution; verifying the heat insulation effect of the heat insulation measures; model structure deformation generated by temperature is investigated; obtaining a heat flux density and surface temperature relation curve; the influence of model structure deformation on the flow field is studied. The design verification method proves that the precursor of the high-speed wind tunnel and the air inlet duct thermal experiment model have accurate temperature control and thermal insulation protection capabilities, and verifies the obvious influence of wall temperature change on the flow field structure; the aerodynamic thermal coupling effect can be effectively reproduced, a hypersonic air inlet heat-flow coupling experimental platform is established, and the experimental platform has engineering practical value.

The invention discloses an axial flux motor temperature prediction method based on equivalent thermal circuit method calculation, and the method comprises the following steps: 1, motor thermal circuit unit division: decomposing a motor into a stator unit, a rotor unit, an air gap unit and a housing unit, and constructing an equivalent thermal network through a node-branch method; 2, calculating a multi-physics coupling heat source; 3, thermal resistance parameter dynamic calculation and CFD coupling optimization: calculating conduction thermal resistance, convection thermal resistance and contact thermal resistance; and 4, parameter self-calibration based on machine learning: constructing a PINN model according to a physical law and known physical parameters, introducing a Bayesian optimization algorithm on the basis of the PINN model, adjusting and optimizing the parameters of the PINN model by using Bayesian optimization, designing a reinforcement learning algorithm, and carrying out self-calibration on the parameters of the PINN model. Enabling the reinforcement learning algorithm to dynamically adjust parameters according to the real-time operation data of the system and the prediction result of the PINN model; 5, constructing and solving a heat balance equation; and step 6, visualizing and verifying the temperature field.

The invention discloses a single-phase immersed liquid cooling temperature stratification evaluation and disturbance liquid injection balance control system, and relates to the technical field of liquid cooling circulation structures. The single-phase immersed liquid cooling temperature stratification evaluation and disturbance liquid injection balance control system comprises a backflow liquid multi-point liquid inlet dynamic monitoring module used for collecting liquid cooling branch state data; the immersion liquid temperature layering monitoring module is used for evaluating the non-uniform degree of heat distribution and adjusting a disturbance liquid injection strategy; the liquid flow distribution equilibrium evaluation module is used for analyzing the matching degree of liquid flow distribution and heat dissipation and optimizing a flow direction coverage strategy; the cooling path dynamic judgment and switching module is used for evaluating the cooling state and the thermal load change and regulating and controlling the circulation path; and the immersed liquid cooling cabinet local disturbance self-balancing regulation and control module is used for guiding local convection and adjusting the disturbance direction. The problem that heat dissipation efficiency of a chip is affected by local heat accumulation in the immersed liquid cooling cabinet due to serious cold and hot lamination after backflow of a cooling liquid branch is solved.

The invention discloses a creep test system of a turbine rotor blade film hole simulation piece and a test method of the creep test system. Comprising a clamping assembly used for fixing a test piece, a loading assembly used for applying a load to the test piece, a strain measuring assembly used for measuring the strain rate of the test piece, a heating assembly used for covering the test piece to form a heating channel, and a cooling assembly used for manufacturing and conveying cooling airflow to flow through the interior of the test piece, the strain measurement assembly is used for measuring the external temperature of the test piece and the internal temperature of the test piece, the control assembly is connected with the strain measurement assembly, the heating assembly, the cooling assembly and the temperature measurement assembly, and the heating assembly is used for manufacturing and conveying high-temperature airflow to flow through the heating channel so as to heat the outside of the test piece to a first set temperature; the cooling assembly is used for cooling the interior of the test piece to a second set temperature, and the heating assembly and the cooling assembly are used for forming a dynamic convection environment around the test piece.

The invention relates to the technical field of bus ducts, and discloses an efficient heat dissipation bus duct with a waterproof function, which comprises an upper cover plate, a lower cover plate and conducting bars vertically arranged between the upper cover plate and the lower cover plate, the conducting bars are symmetrically arranged in groups, and a heat dissipation cavity is formed between the two groups of conducting bars; the upper cover plate and the lower cover plate are respectively provided with convection heat dissipation holes communicated with the heat dissipation cavity, and the convection heat dissipation holes and the heat dissipation cavity form an air convection air channel which is used for conducting convection heat dissipation on the conducting bar. According to the invention, the conductive bars are arranged at intervals to cooperate with the convection heat dissipation holes to form the convection heat dissipation cavity for the inner cavity of the bus duct, so that the efficient heat dissipation performance of the bus duct is ensured; through arrangement of the sealing strips and the hydrophobic protrusions, on the premise that the sealing performance of the conducting bar is guaranteed, water flow in the heat dissipation cavity can be prevented from flowing to gaps among the conducting bar, the inner heat dissipation plate and the cover plate, and the waterproof performance of the whole bus duct is improved.

The invention relates to the technical field of fire-fighting simulation, and discloses a fire-fighting fire dynamic simulation system based on multi-physics field coupling. The system collects temperature field distribution data, smoke concentration gradient data, airflow velocity field data and building structure heat conduction parameters of a fire scene; establishing a bidirectional coupling model of a temperature field and a smoke diffusion field, realizing dynamic correction of a smoke convection effect by a temperature gradient through real-time data exchange, constructing a correlation model of an airflow velocity field and a heat conduction parameter of a building structure, and adjusting a velocity field vortex coefficient according to heat flow intensity; integrating the bidirectional coupling model and the correlation model to form a multi-physical field joint calculation framework, and propelling a simulation process by adopting a discrete time slicing mode; and outputting a three-dimensional dynamic simulation map including a temperature field evolution track, a smoke diffusion path and an airflow disturbance range. The system can accurately restore the fire scene multi-physics field synergistic effect process, and provides effective support for fire rescue decision and building fire protection design.

The invention discloses a constant-temperature air bath box based on a mean value coordination controller and top cover refrigeration. The constant-temperature air bath box comprises a ceramic heating sheet module, a circulating water refrigerating unit, a temperature acquisition device and a top cover semiconductor refrigerator TEC auxiliary cooling system. The temperature control system adopts proportion-integration-differentiation (PID) control based on mean value coordination, and comprises a controller for controlling the mean value tracking set value of each path of temperature measurement value and a controller for eliminating the deviation between each path of temperature measurement value and the mean value. When the TEC refrigeration sheet and the cooling fan on the top cover of the constant temperature box work, heat of upper-layer air in the constant temperature box is dissipated to the outside, the situation that the upper portion is hot and the lower portion is cold due to natural convection of air in the box is reduced, and the uniformity and the stability of the temperature are improved. According to the temperature control system, the temperature coupling effect between the heating pieces is fully considered, and the accuracy and uniformity of temperature control are improved; and meanwhile, each hot module and each cold module have certain symmetry, so that the setting difficulty of control parameters is effectively reduced.

The invention discloses a variable environment fuel oil atomization quality test system and test method. The system comprises a high pressure common rail injection system, a low temperature refrigeration system, an electronic control system, an image data acquisition system and an environment test chamber. The low-temperature refrigerating system reduces the temperature of fuel oil in the oil injector through convective heat exchange; the environment test cabin simulates the environment air pressure, temperature and humidity in the cabin according to the actual environment parameters in the cylinder in the engine operation process; the image data acquisition system acquires spray image information of low-temperature fuel oil in a variable environment and performs image processing, and by actually measuring the circulating oil injection quantity during fuel oil injection, the Sott average diameter is calculated according to different empirical formulas, and the fuel oil atomization characteristics are comprehensively analyzed. The invention provides a reliable experimental means for researching the fuel oil atomization condition of the fuel oil in a low-temperature state in a low-temperature environment in the cold start process of the engine, deeply analyzing the influence of a complex environment on the cold start of the engine, and seeking to improve the cold start performance of the engine.

The invention discloses a PINN-based transformer convective heat transfer coefficient acquisition method, system and device and a medium, and relates to the technical field of transformers, and the method comprises the steps: building a three-dimensional thermal field simulation model based on transformer structure parameters, obtaining temperature field data through multi-physics field coupling simulation, building a sample set, training a physical information neural network model, and obtaining the convective heat transfer coefficient of a transformer. A loss function is defined, through weight adjustment and optimization algorithm training, loss change is dynamically monitored, convective heat transfer coefficient distribution is inversed, an inversion coefficient is substituted into a thermal model for forward calculation, iterative optimization is performed through comparison with independent measurement data, and accuracy and applicability are verified through actually measured temperature data. According to the method, the dependence on experimental data is reduced, the high-precision and high-efficiency acquisition of the convective heat transfer coefficient of the spatial change of the transformer is realized, and a reliable technical means is provided for thermal design and state evaluation of the transformer.

The invention provides a cabinet three-dimensional temperature field monitoring method and device, and the method comprises the steps: arranging four temperature sensors at the positions of left and right columns at the rear part of a cabinet and the left and right middle positions of the rear side of the top of the cabinet respectively, and forming vertical and horizontal coordinate distribution points covering a key heat distribution region of the cabinet; collecting temperature data of the four temperature sensors at preset coordinate positions, and inputting the temperature data into a three-dimensional temperature field reconstruction algorithm model; processing the temperature data by adopting a bilinear interpolation method, and calculating the temperature value of any position in the cabinet; and according to a hot air convection rule, introducing height direction temperature gradient correction into the three-dimensional temperature field reconstruction algorithm model so as to eliminate the influence of heat convection on a temperature monitoring result. The three-dimensional temperature distribution in the cabinet can be accurately reflected, the temperature monitoring precision and real-time performance are improved, and the installation and maintenance cost is reduced.

The invention belongs to the technical field of simulation analysis, and particularly relates to a medium-voltage environment-friendly gas insulation switch cabinet temperature field modeling method, which comprises the following steps: constructing a three-dimensional geometric model of a switch cabinet and carrying out simplification processing; the COMSOL multi-physics field simulation software is imported; electromagnetic-thermal bidirectional coupling modeling is carried out; adding a surface-to-surface radiation physical field; determining a fluid flow state based on a Glassu number, and selecting a corresponding fluid dynamic model; environment conditions are set, and radiant heat exchange power and a convective heat exchange coefficient are calculated; establishing a grid division strategy based on temperature contribution to obtain a simulation model of preliminary modeling; solving and post-processing a solving result, and analyzing hot spot distribution by using a temperature distribution diagram; a thermocouple is installed in a hot spot area in an actual switch cabinet, actual temperature data are obtained through measurement, and the simulation model subjected to preliminary modeling is corrected according to the actual temperature data. The temperature rise condition can be accurately predicted, and a powerful guarantee is provided for safe operation of equipment.

The invention relates to the technical field of charging piles, and discloses a current control method and device based on heating of a charging gun, and the method comprises the following steps: obtaining a gun head temperature and an environment temperature based on a preset sampling frequency, so as to obtain a heat exchange coefficient in a corresponding convection heat dissipation formula through matching; gun head resistance corresponding to the gun head temperature is calculated based on a resistance temperature polynomial fitting formula; according to the preset calculation frequency, the gun head temperature, the environment temperature, the heat exchange coefficient and the gun head resistance are input into a convection heat dissipation formula, and balance current is obtained through calculation; parameters of a PID adjusting formula are obtained based on the gun head temperature, the external temperature, the external humidity and the resistance value, and a charging current adjusting value is obtained based on the PID adjusting formula; and repeating the above steps, and adjusting the current charging current of the charging gun based on the charging current adjustment value. The method has the advantage of effectively balancing the temperature of the charging gun and the stability of the charging current under the condition of external temperature fluctuation.

The invention relates to the technical field of electric tracing band heating systems, in particular to an electric tracing band heating system operation control method, device and system, and the method specifically comprises the steps: analyzing the severity of the heat compensation imbalance condition of an electric tracing band caused by external severe convection and PTC characteristics, and constructing the heat compensation imbalance degree of the electric tracing band; analyzing the heat compensation lag condition of the electric tracing band to the heated body caused by the heated inertia influence, and constructing the compensation response hysteresis of the electric tracing band; temperature compensation factors are constructed by combining the two, the proportional term of the PID control system in the next control interval is obtained, power adjustment of the electric tracing band heating system is carried out, the heat compensation hysteresis of the electric tracing band heating system under the condition that the convection heat dissipation condition is unstable is reduced, and the heating efficiency of the electric tracing band heating system is improved. The defect that due to the influence of temperature response compensation lag, power output of an electric tracing band heating system is frequently adjusted, and local supercooling of a heated body is caused is overcome, and the temperature stability of the heated body is improved.

The invention discloses an environment-friendly safe low-smoke halogen-free cable, and relates to the technical field of cables, the environment-friendly safe low-smoke halogen-free cable comprises a cable assembly, the cable assembly comprises an outer sheath, the outer surface of the outer sheath is fixedly communicated with an air outlet assembly, a plurality of conductors are arranged in the outer sheath, each conductor is hollow, and the outer surface of the outer sheath is fixedly communicated with the air outlet assembly. A plurality of filling pipes are arranged among the exteriors of the plurality of conductors, and the plurality of filling pipes are hollow; according to the environment-friendly safe low-smoke halogen-free cable, when the temperature of air around the cable is low, cold air enters the hollow conductor from the air inlet, air convection is formed in the conductor, heat is taken away and then discharged from the air outlet, and when excessive heat is generated in the use process of the conductor, the heat can enter the filling pipe through the multiple drainage holes, so that the cable is protected. And heat can flow in the conductor, so that excessive local heat dissipation of the conductor can be prevented.

To provide a prefabrication method for a layered wall that can integrate tiles and a heat insulation layer without breakage.SOLUTION: A layered wall cantilevers a tile and a mold on both sides of a core concrete layer to form a structure which has rigidity like a core tube steel structure and also allows elastic deformation, a heat insulation layer is charged between the tile and core concrete layer and connected with a precast outer support rod to be completely cast, layer by layer, without inversion, wherein the title is not broken owing to inversion, sandwiched between the heat insulation layer with elasticity and a mold for another layered wall to be securely hardly broken during warehouse storage / transportation, and also securely hardly broken in crane assembly, the heat insulation layer is sandwiched inside to be securely hardly dropped or broken, and a wind leak and a cold bridge are evaded with the precast outer support rod. On casting the core concrete layer, operations to connect with an outer support tile layer, block the cold bridge, and block convection are completed, so that the method is simple and easy to operate.SELECTED DRAWING: Figure 1

The invention relates to the technical field of metal material heat treatment, in particular to a gradient temperature control method for a stainless steel cold rolling annealing process. Comprising the steps that an annealing furnace is divided into independent temperature control sections in the strip steel conveying direction, each temperature section is provided with an electric heating wire set, a forced convection cooling air duct and a high-precision infrared temperature measurement array, temperature data are collected in real time, and a target gradient temperature curve is generated; constructing a phase change power-temperature correlation model, and outputting a theoretical gradient temperature curve; a three-stage MPC is adopted to cooperatively control and output a control signal; and the heating power and the cooling strength are adjusted in real time according to the control signal, if the temperature fluctuation exceeds the limit, the power is compensated through a PID algorithm, the strip steel speed is adjusted, and closed-loop feedback is formed. Through multi-section independent temperature control, thickness-temperature dynamic modeling and a three-level cooperative control framework, accurate tracking of a gradient temperature curve is achieved, and the quality and efficiency of the annealing process are improved.

The utility model relates to the field of household appliances, and discloses a condensation heat exchanger, a condensation heat exchange system and a water heater. According to the condensation heat exchanger, the condensation heat exchange system and the water heater, the heat efficiency of a conventional gas water heater can be improved, installation is convenient and fast, the improvement cost is low, and normal use of gas heating equipment is not affected. The condensing heat exchanger comprises a body, a heat exchange mechanism, a connecting mechanism and a smoke guide mechanism, a body smoke inlet is formed in the bottom of the body, and a body smoke outlet is formed in the top of the body; the heat exchange mechanism and the smoke guide mechanism are arranged in the body, and the heat exchange mechanism is used for conducting heat exchange on a cold medium circulating in the heat exchange mechanism; the connecting mechanism is arranged at the body smoke inlet, and the body smoke inlet is detachably connected with an outlet of a smoke discharging mechanism of the gas heating device in a sealed mode through the connecting mechanism. The smoke guide mechanism is located between the body smoke inlet and the body smoke outlet and used for changing the flowing direction of smoke in the body, prolonging the convection path of high-temperature smoke and improving the heat exchange efficiency.

The invention relates to the technical field of electric control cabinets, and discloses an efficient heat dissipation frequency converter electric control cabinet which comprises a bottom plate and a heat insulation plate. In the efficient heat dissipation frequency converter electric control cabinet, a lower low-temperature area accelerates the flow speed of airflow in an air inlet pipe through rotation of a first fan, efficient heat dissipation is achieved, and a second fan in a high-temperature area and the first fan on the top supply air upwards; the natural convection characteristic of hot air rising is used for accelerating hot air discharging, air cooling is started at the low temperature, cooling plate water cooling is automatically switched at the high temperature, and the energy-saving performance and the powerful cooling requirement are both considered. When a differential pressure sensor on the filter screen monitors abnormity, a threaded rod can be driven to rotate, a brush plate moves up and down to automatically clean the filter screen, a second fan rotates reversely to blow dust and impurities away from the filter screen, a mounting frame is pushed inwards, a clamping block in a sleeve and a first circular truncated cone are unlocked, and a spring arranged on the sleeve in a sleeving mode can push the mounting frame and a mounting plate to automatically slide. When the mounting frame is pushed inwards again, the clamping block in the sleeve is automatically locked with the circular truncated cone I, so that the maintenance operation of the electric control cabinet is more convenient.

The invention relates to the technical field of quenching, in particular to a high-toughness steel wire production quenching furnace and a quenching process thereof. The quenching furnace comprises a furnace body, a heating chamber and a cooling chamber are arranged in the furnace body, a blocking mechanism is arranged between the cooling chamber and the heating chamber, a conveying mechanism is arranged in the cooling chamber, a mounting frame is arranged at the bottom of the cooling chamber, and a quenching oil tank used for storing quenching oil is arranged in the mounting frame. A stirring mechanism and a reciprocating mechanism are arranged in the quenching oil tank; oil in the quenching oil tank flows through up-down reciprocating motion of the pressing plate, temperature layering of the upper layer and the lower layer of the oil is broken, heat exchange is promoted, the temperature of the oil is more uniform, when the pressing plate reciprocates up and down and ascends, the through holes are opened, the oil in the upper layer can smoothly pass through, and when the pressing plate descends, the through holes are closed. Therefore, the speed of oil in the lower layer flowing to the upper layer in the oil tank is increased, convection of oil in the quenching oil tank is more sufficient, and the temperature difference between the upper layer and the lower layer is further reduced.

The invention belongs to the field of machine tool linear feed shaft thermal error prediction, and provides a cross-working-condition migration machine tool thermal error step-by-step prediction method and a cross-working-condition migration machine tool thermal error step-by-step prediction system. According to the technical scheme, the method comprises the following steps: acquiring thermal error data of the linear feed shaft of the machine tool under two working conditions of natural cooling and forced cooling and time-temperature distribution data of each temperature measurement point of the linear feed shaft; decoupling the thermal error data under each working condition into a linear component and a nonlinear deviation component; according to a heat conduction and convective heat transfer coupling mechanism, the inhibition effect of low-temperature water on the temperature rise of the lead screw is quantified, and a temperature rise inhibition coefficient is calculated; based on the inhibition coefficient, mapping the original temperature rise data and the nonlinear deviation component under the natural cooling working condition to an equivalent temperature rise characteristic space under the forced cooling working condition; and predicting a cross-working-condition linear component and a non-linear deviation component according to the equivalent temperature rise characteristic space, and performing superposition to obtain a thermal error prediction value of the linear feed shaft. And high-precision prediction of the thermal error of the linear feed shaft under different cooling working conditions is realized.

The utility model discloses a vehicle-mounted dehumidification protection air temperature type carbon dioxide gasification pry. The device comprises a protection box body and a gasifier located in the protection box body, the gasifier is provided with a gasification tube bundle, the front end of the gasification tube bundle is connected with the liquid separation side of a high-pressure common rail pipeline, and the rear end of the gasification tube bundle is connected with a carbon dioxide outlet pipeline through a collection box; the top of the protection box body is provided with a fan, the side face is provided with a shutter, and the bottom is provided with a dehumidification protection net and a folding protection bottom plate. And the fan adopts a blowing type or induced air type working mode, and adopts different air inlet modes according to different air humidity conditions, so that the gasification efficiency and stability are improved. According to the forced convection heat exchange principle, based on the bottom dehumidification device, the inertia separation technology of gas-liquid speed steering is utilized, two different operation states of the draught fan are adopted, and all-weather efficient, stable and safe high-pressure gasification operation is achieved by matching angle adjustment of the shutters on the two sides and air injection and entrainment to remove the influence of the boundary effect of the wall face.

The invention discloses a photovoltaic-driven IDC electric-cooling linkage method and device, and belongs to the technical field of IDC electric-cooling linkage, and the method comprises the following steps: S1, constructing a gravity energy storage structure; s2, the gravity object is lifted to the highest point of the gravity object channel through the gravity energy storage structure; s3, air at the bottom of the gravity object channel is compressed for the second time, and a thermal cracking reaction is carried out; s4, thermal cracking gas generated by the thermal cracking reaction is drained, and combustion products are discharged into a gas storage chamber; s5, the generated steam waste heat pushes a turbine in a turbine chamber to do work for power generation; and S6, domestic hot water and night heating hot water are prepared, convective heat exchange is conducted, the low-temperature reclaimed water obtained after heat exchange is heated into high-temperature steam in a cooler, the high-temperature steam enters a turbine to become high-temperature reclaimed water, and the high-temperature reclaimed water flows into a control center or a water storage pool. The organic matter compressed garbage is used as a gravity object for gravity energy storage, and heavy oil, solid fuel, adsorbents and other high-value products are produced in the gravity energy storage process.

The utility model belongs to the technical field of high-temperature flow field pressure testing, and discloses a water-cooling pressure probe for measuring a turbine interstage three-dimensional dynamic high-temperature flow field, which is characterized by comprising a probe head, a support rod, a mounting seat and a lock cover. The probe head comprises a cylinder and a cylinder beveled body which share the same bottom surface, and two dynamic pressure sensors are packaged in the probe head. The diagonal plane of the cylindrical beveling body and the side face of the cylinder are each provided with a pressure sensing hole, and the pressure sensing holes are communicated with a pressure sensor. A plug board with a vortex generating device is arranged in the probe head and the support rod, so that heat convection between cooling water and the pressure measuring channel is enhanced. Three-dimensional flow parameters such as a pitch angle, a deflection angle, total pressure, static pressure and Mach number in a turbine interstage flow field can be measured through calibration of a calibration wind tunnel. Compared with an existing probe, the probe can realize flow field measurement in a high-temperature environment, prevents a sensor at the head of the probe from temperature drift and even damage due to heating, and further ensures the accuracy of measured data.

The present invention discloses a fuel cell cogeneration temperature adaptive control method based on a multi-in-one heat dissipation system, comprising: step 1, monitoring the internal and external temperature data of the container respectively through a container internal temperature real-time monitoring module and a container external temperature real-time monitoring module; step 2, the heat dissipation scheme adaptive adjustment module receives the internal and external temperature data of the container obtained in step 1, and compares and analyzes the two data, and the system heat dissipation scheme method simulation module determines the heat dissipation scheme according to the result of the comparative analysis; step 3, the determined heat dissipation scheme is input into the execution module through the control strategy to realize one or more of the louver heat dissipation, ventilation ball convection heat exchange and liquid cooling water mist heat dissipation for heat dissipation. The present invention optimizes the temperature management and heat dissipation efficiency of the fuel cell system through precise monitoring and intelligent adjustment of the temperature, and significantly improves the energy utilization and stability of the entire system.

The invention provides a severe convective weather early warning method and system based on monomer identification and lightning jump, and is applied to the technical field of data processing. The method comprises the following steps: processing high-precision lightning positioning data and meteorological radar data to generate convection monomer characteristic parameter information; processing the ground observation data to generate ground meteorological element associated information; processing the convective monomer characteristic parameter information and the ground meteorological element association information to generate severe convective monomer identification result information; processing the high-precision lightning positioning data based on the strong convection monomer identification result information to generate lightning jump judgment information; and processing the severe convection monomer identification result information and the lightning jump judgment information based on the target severe convection weather early warning model to generate severe convection weather early warning result information.

The utility model discloses a heat exchange enhanced heat-work coupling elastic-thermal refrigeration device based on a topological elastic micro-channel and a system thereof, a driving SMA bed is enabled to generate phase change through heat energy, the elastic-thermal effect of an elastic-thermal SMA is induced, the length ratio of the elastic-thermal SMA to the driving SMA is set to be 1: 2, the elastic-thermal SMA bed can realize larger phase change strain, and the elastic-thermal effect of the elastic-thermal SMA bed is enhanced. The latent heat released in the phase change process is larger; the two pieces of symmetrical elastic rubber are arranged in the fluid pipeline of the SMA bed, control over the system flow can be achieved, fluid is made to fully conduct convection heat exchange with the SMA bed, and the heat exchange efficiency of the refrigerating system is improved; transfer of cold energy is achieved through heat transfer fluid, refrigerating devices are used at the same time, alternate dissipation of the cold energy and heat energy of the system is achieved through the two elastic heat SMA beds, periodic cycle work can be stably and efficiently conducted, and the working efficiency of the refrigerating system is improved.

The invention relates to the technical field of frequency converter heat dissipation, and discloses a generator set frequency converter heat dissipation structure which comprises a cabinet body, a sealing seat arranged at the top of the cabinet body, a detachable sealing cover arranged at the top of the sealing seat, a first convection window arranged at the top of the inner side wall of the cabinet body, and a second convection window arranged at the bottom of the inner side wall of the cabinet body. A detachable water-cooling heat exchanger or an air-cooling heat exchanger is arranged on the outer side wall of the cabinet body, a first convection cavity and a second convection cavity are formed in the positions, facing the outer side wall of the cabinet body, of the water-cooling heat exchanger and the air-cooling heat exchanger respectively, and the first convection window and the second convection window are communicated through the first convection cavity and the second convection cavity. Compared with the prior art, the device has the advantages that the internal heat transfer medium does not need extra power, the heat dissipation efficiency is high, contact with cooling water can be avoided, the air tightness is good, invasion of salt mist or dust is reduced, fluorinated liquid is allowed to serve as the internal heat transfer medium, and the phase change latent heat of the fluorinated liquid can be used for coping with high-temperature transient loads.