1289 results about "Thermal fluids" patented technology

The invention relates to the technical field of temperature control, in particular to an enzyme reaction kettle self-adaptive temperature control system and method, and the system comprises a temperature detection module, a temperature control module, a heat conduction oil flow control module and an automatic regulation and control module; temperature data of a reaction kettle are collected in real time through a temperature detection module, a temperature control module adjusts parameters based on a PID algorithm and fuzzy logic to generate a control instruction, and a heat conduction oil flow control module adjusts flow by combining double-closed-loop cascade control with a feedforward compensation algorithm, so that thermal inertia lag is shortened. And the automatic regulation and control module generates optimized process parameters based on a reaction kinetic model and a genetic algorithm, and dynamically adjusts a temperature set value. The control method comprises the steps of temperature data acquisition, PID control instruction generation, conduction oil flow coordinated regulation, process parameter optimization and the like. The problems that in the prior art, temperature control precision is insufficient, conduction oil flow control is not accurate enough, and technological parameters cannot be automatically regulated and controlled are solved.

The embodiment of the invention provides a heat conduction oil heating temperature control system and method. The system comprises a first detection module, a temperature control module, a circulating pump, a waste heat recovery module, a plurality of segmented heat conduction oil pipelines, heating modules corresponding to the heat conduction oil pipelines and a second detection module. The first detection module sends the environment temperature to the temperature control module; the temperature control module calculates the initial heating power corresponding to each heat-conducting oil pipeline, contains the initial heating power in a heating instruction and sends the heating instruction to the corresponding heating module; the circulating pump drives the heat-conducting oil to each heat-conducting oil pipeline; the heating module heats the heat utilization equipment according to the initial heating power; the second detection module sends the heating temperature of the conduction oil pipeline corresponding to the current time period to the temperature control module; the waste heat recovery module calculates the waste heat utilization rate and sends to the temperature control module; and the temperature control module calculates to-be-adjusted heating power required by the next time period, contains the to-be-adjusted heating power in a heating instruction and sends the heating instruction to the corresponding heating module for subsequent heating temperature control, so that the heating temperature control precision of the heat-conducting oil is improved, and the energy consumption is reduced.

A multi-way valve adapted to control a flow of fluid to different thermal fluid circuits includes a valve housing, a valve flow controller, and a sealing system. The valve flow controller is arranged in the valve housing to control flow through the valve housing. The sealing system is configured to seal between the valve housing and the valve flow controller.

The invention relates to the technical field of solar thermal power generation, and discloses a mirror field and heat absorber cooperative control method and system, and the system comprises a simulation coupling module which determines a light incident angle based on irradiation data and a sun position model, builds a heliostat model in a simulation environment, simulates a three-dimensional thermal fluid, determines a heat absorber model, and controls the heliostat model and the heat absorber model; the control strategy module determines a control strategy according to the heliostat model and the heat absorber model, the control strategy module integrates a plurality of intelligent control algorithms, predicts a future state and adjusts control input based on the models, and the environment simulation module provides a training scene and a fault working condition scene of extreme weather and sets the extreme weather as a plurality of risk levels. The data analysis module collects and stores operation data, the operation state and performance indexes are displayed through a visual interface, control input is adjusted for the actual working condition and the future state on the basis of a dynamic model, and good control stability is achieved.

The invention relates to the technical field of microorganism culture, and discloses a microorganism culture tank device which comprises a culture tank, a concave observation area is arranged in the center of the top of the culture tank, a central culture area surrounding the observation area is arranged in the culture tank, an oil path temperature control area wraps the culture tank, and a double-helix heat conduction oil path is integrated in the oil path temperature control area. Through the cooperation of the uniform distributor and the distributed simulated liquid conveying unit, the gas-liquid proportion and fluid distribution can be accurately regulated and controlled, the physical and chemical conditions in the deep sea or extreme environment are simulated, the constant-temperature precision of + / -0.005 DEG C is realized through the double-helix heat conduction oil way, the low-temperature environment is stably maintained, and the real thermodynamic conditions of deep-sea sediments are simulated; the device meets the sensitive requirements of different microorganisms on temperature, and has the characteristics of high practicability and capability of simulating a dynamic fluid environment of deep sea.

An aircraft system includes an electrified powertrain having a first power module and a second power module. The aircraft system further includes a thermal management system having a thermal fluid loop for conveying a thermal fluid. The first power module and the second power module are in thermal communication with the thermal fluid loop. The thermal management system further includes a heat exchanger in thermal communication with the thermal fluid loop upstream of the first power module and the second power module such that the thermal fluid from the heat exchanger is partitioned between the first power module and the second power module.

The invention discloses a pure electric vehicle heat pump type whole vehicle thermal management system and method, and relates to the technical field of new energy vehicle thermal management, and the method comprises the following steps: constructing a combined twin system of thermal fluid, structural vibration and acoustic fluctuation, collecting pressure waves and vibration phases by using an array sensor, forming a steady state baseline spectrum and a transient state baseline spectrum, and calculating the temperature of the steady state baseline spectrum and the transient state baseline spectrum; and a unified reference is established. According to the method, a combined twinborn system of thermal fluid, structural vibration and acoustic fluctuation is constructed, the dynamic characteristics of pulsating waves are accurately monitored, and instability early warning is carried out by using a phase locking tracking method. Through pipeline topology reconstruction and segmented damping link design, a self-adaptive pulsation buffer zone is introduced, and pulsation energy is effectively absorbed. And in combination with a multi-target control law and a time reflection mirror cooperative regulation strategy, refrigerant flow is accurately controlled, pulsation energy is actively counteracted, and stable operation of the system is guaranteed. Through the innovative design, the stability of a heat management loop is improved, the fault risk caused by pulsation is reduced, and the cooling efficiency and safety are improved.

The invention provides a conduction oil boiler system optimization control method and system based on an adaptive algorithm. The method comprises the steps of data acquisition, data preprocessing, model training, parameter optimization and real-time control. The system comprises a sensor network, a data processing module, a model training module, an optimization calculation module and a control execution module. Boiler operation data are collected in real time through a sensor network, a combustion boiler natural gas dynamic prediction model and a circulating pump efficiency optimization model are constructed after preprocessing, parameters such as the number of boilers, the circulating pump frequency and the oil supply temperature are optimized through an adaptive differential evolution (ADE) algorithm, and finally closed-loop adjustment is achieved through a control execution module. According to the method, the data-driven modeling technology and the self-adaptive optimization capability are utilized, so that system parameters can quickly respond to process demand changes, the heat efficiency is remarkably improved, the energy consumption is reduced, the temperature fluctuation is reduced, the operation and maintenance cost is optimized, and the operation performance and the economical efficiency of the heat conduction oil boiler system are comprehensively improved.

A multi-way valve adapted to control a flow of fluid to different thermal fluid circuits includes a valve housing, a valve flow controller, and sealing systems. The valve flow controller is arranged in the valve housing to control flow through the valve housing. The sealing systems are configured to seal between the valve housing and the valve flow controller.

The invention discloses a heat energy cyclic utilization control system and method for a copper-clad plate factory, and relates to the technical field of heat energy cyclic utilization. The heat energy cyclic utilization control system for the copper-clad plate factory comprises a heat energy circulation module, wherein high-temperature waste gas is introduced to perform efficient countercurrent heat exchange with low-temperature high-medium heat-conducting oil; the temperature-pressure dynamic model building module is used for building a temperature-pressure coupling function according to the thermal expansion and phase change characteristics of the medium and building a temperature-pressure dynamic model in combination with the basic equation and the temperature-pressure coupling function; the temperature and pressure coupling optimal control sequence determination module is used for solving an optimal control sequence in a prediction window through a rolling optimization algorithm; and the heat energy utilization module is used for inputting the high-temperature and high-medium heat conduction oil obtained by heating in the heat energy circulation module into a plurality of heat utilization devices according to the optimal control sequence. According to the method, the optimal control sequence in the prediction window is solved through the rolling optimization algorithm to dynamically adjust the operation parameters of the system, and the problem that the heat energy circulation efficiency is reduced in the prior art is solved.

The invention relates to the technical field of unit gap vibration testing, in particular to a unit gap vibration testing method based on transient numerical simulation, and the method comprises the steps: building a multi-degree-of-freedom dynamic model through obtaining unit structure parameters and operation parameters, carrying out the global optimization of stiffness matrix and damping matrix parameters through employing a genetic algorithm, and generating a high-precision dynamic model; a thermal fluid coupling module is integrated in the model, a coupling weight factor is dynamically corrected in combination with a particle swarm optimization algorithm, a multi-physical-field unsteady-state coupling vibration response equation is generated, and a Pareto optimal solution set is solved in combination with a multi-objective genetic algorithm to optimize gap parameters. According to the invention, real-time evaluation of the vibration state and closed-loop output of fault early warning signals are realized. According to the invention, the problem of insufficient characterization of unsteady state multi-field coupling characteristics in the prior art is solved, and high-precision technical support is provided for online monitoring of rotating machinery.

The invention relates to the technical field of compressed air energy storage, and discloses a compressed air energy storage system compression side heat exchanger optimized operation method which comprises the steps that a compressor model is obtained; acquiring a heat exchanger model; and based on the compressor model and a heat exchanger module, with compressor constraint conditions and heat exchanger constraint conditions, and with the minimum power deviation value of each stage of compressor and the minimum heat conduction oil complementary energy of each stage of heat exchanger as optimization targets, optimization control is conducted on the heat exchanger. According to the scheme, the performance and the parameters of the compressor during working and the performance and the parameters of the heat exchanger during working serve as constraints, the multi-objective optimization problem is constructed, the optimization problem can be solved under the condition that the system safe operation constraints are met by solving the multi-objective optimization problem, and the safety of the system is improved. The dual purposes of compression power tracking and efficient heat conduction oil energy utilization are achieved.

The invention discloses a hydrogen charging system and method for a magnesium-based solid hydrogen storage reaction kettle. A hydrogen storage tank is placed in each placement position in an inner cavity of the reaction kettle, and a heat exchange coil pipe is arranged outside each placement position; the hydrogen charging system comprises a hydrogen charging part, a temperature control part and a safety protection part; the hydrogen filling part comprises a hydrogen filling main pipeline; a hydrogen flow controller and a hydrogen heat exchanger are arranged on the hydrogen filling main pipeline; the temperature control part comprises an external heat-conducting oil circulating system, the external heat-conducting oil circulating system comprises a heat-conducting oil tank, a flow bypass pipeline is arranged between the oil inlet pipeline and the oil return pipeline, and a heat-conducting oil shunting automatic switch valve is arranged on the flow bypass pipeline; the safety protection part comprises a safety valve arranged on the reaction kettle, the safety valve is externally connected with an emptying pipeline, a pressure relief bypass pipeline is arranged between the emptying pipeline and the hydrogen filling main pipeline, and an automatic opening and closing pressure relief valve is arranged on the pressure relief bypass pipeline. The system has the advantages that the hydrogen storage tanks in the reaction kettle can be quickly and efficiently filled with hydrogen, and the safety of the system is ensured.

A thermal management system configured to deice at least one air-side heat exchanger by selectively operating the air-side heat exchanger as a heat rejecting heat exchanger. The thermal management system is further configured to select a heat source from a plurality of heat sources to elevate a temperature of a thermal fluid supplied to the heat rejecting heat exchanger. Additionally, at least some of the heat rejected by the heat rejecting heat exchanger can be recovered by another air-side heat exchanger being selectively operated as a heat absorbing heat exchanger. Such recovery of heat can also be facilitated by a reversible impeller such that, depending on which air-side heat exchangers are currently being operated as a heat rejecting or heat rejecting heat exchanger, can selectively direct the airflow in either a forward or reverse direction such that the heat absorbing heat exchanger is downstream of the heat rejecting heat exchanger.

The invention discloses a polymerization reaction temperature optimization method and device based on generative AI, and a server side method comprises the steps: collecting and preprocessing multi-source data in a reaction kettle for polymerization reaction in real time through a sensor, and obtaining real-time state information in the reaction kettle; inputting the real-time state information into a pre-trained generative AI model, and outputting a temperature change track in a future preset time period; according to the temperature change track, a preset reinforcement learning strategy is used for dynamically adjusting the opening parameter of the heat conduction oil valve, and a heat conduction oil valve opening instruction is generated; and sending a conduction oil valve opening instruction to a control system for controlling the conduction oil valve so as to optimize the polymerization reaction temperature. According to the embodiment of the invention, the system can know the temperature change trend in advance through the pre-trained generative AI model and the reinforcement learning strategy, thereby achieving the more precise temperature control, facilitating the reduction of temperature fluctuation, and improving the product quality.

The utility model discloses a fuel gas heat conduction oil boiler, which relates to the technical field of oil boilers, and comprises a base, the upper side of the base is fixedly connected with a water suction pump, the input end of the water suction pump is fixedly connected with a water suction pipe, the output end of the water suction pump is fixedly connected with a plurality of supporting legs, and the upper side of the base is fixedly connected with a water inlet pipe. A boiler body is fixedly connected to the upper ends of the supporting legs, an air outlet valve is fixedly connected to the upper side of the outer wall of the boiler body, and a safety valve is fixedly connected to the upper side of the outer wall of the boiler body. Through the mutual cooperation of a filtering adsorption plate, a sliding groove, a push block, a sliding block, a limiting rod, a first spring, a first connecting plate and a U-shaped inserting plate, the filtering adsorption plate can be detached and replaced, the filtering effect of the device is improved, the emission of harmful substances in waste gas can be effectively reduced, the health of surrounding residents and workers can be protected, and the practicability is high. And respiratory system diseases or other health problems caused by inhalation of harmful gas are avoided.

The utility model discloses a conduction oil boiler which comprises a heat exchange assembly and a heating assembly, the heat exchange assembly comprises a first oil supply pipe, a second oil supply pipe, a first heat exchanger and a second heat exchanger, the first oil supply pipe is connected with the first heat exchanger, and the second oil supply pipe is connected with the second heat exchanger. The heating assembly comprises a combustor and a waste gas pipe, the combustor generates heat through combustion and is connected with the first heat exchanger, and the waste gas pipe leads out waste gas generated by the combustor and is connected with the second heat exchanger. Heat generated by the combustor is transferred to heat conduction oil in the first oil supply pipe through the first heat exchanger, heat of smoke in the waste gas pipe is transferred to heat conduction oil in the second oil supply pipe through the second heat exchanger, and therefore the heat generated by combustion of the combustor can be fully absorbed. The heat-conducting oil boiler provided by the utility model can be used for effectively absorbing heat entrained in flue gas, so that the waste of energy is avoided.

The utility model discloses a methanol hydrogen production device which comprises a steam vaporization tank, a cracking reaction tank and a cooler which are connected in sequence, the steam vaporization tank comprises an outer container and an inner container arranged in the middle of the outer container in a sleeved mode, the inner container is used for containing heating media, and a heating pipe is arranged in the inner container; a methanol containing cavity is defined between the inner container and the outer container; and a steam outlet pipe is arranged at the top of the side wall of the outer container. The steam vaporization tank is of a double-layer structure, heat conduction oil is arranged in an inner container and is half-filled, methanol gas is arranged on the upper portion between the inner container and the outer container, liquid is arranged on the lower portion between the inner container and the outer container and is uniformly vaporized into methanol steam, gas on the upper portion is overheated and enters the cracking reaction tank, the cracking reaction tank is provided with a plurality of steel pipes filled with catalysts, and the methanol steam is long in gas path and is uniformly cracked into mixed hydrogen under the action of the catalysts.

The invention discloses a high-pressure amine absorption method carbon capture system and method coupled with liquefied air energy storage, and relates to the technical field of energy storage and carbon capture, the system comprises: an air compression unit used for compressing mixed gas of flue gas and air to generate high-pressure mixed gas, and detecting flow parameters of the mixed gas to generate high-pressure gas; the flue gas inlet amount and the high-pressure mixed gas flow are intelligently regulated and controlled; the heat conveying unit is used for conveying part of the high-pressure mixed gas and heat-conducting oil which are respectively used for carbon dioxide desorption and expansion power generation; and the absorption unit is used for introducing the high-pressure mixed gas from the top of the absorption tower, and absorbing carbon dioxide in the mixed gas by using an ethanolamine solution in the absorption tower to generate a rich solution. According to the invention, the air compression unit in the liquefied air energy storage system is utilized to pre-pressurize the flue gas to be subjected to carbon capture, increase the partial pressure of carbon dioxide, increase the solubility of carbon dioxide, increase the reaction rate of ethanol amine for absorbing carbon dioxide, increase the capture rate and reduce the dosage of ethanol amine solution.

The invention discloses a liquid-cooling heat dissipation system regulation and control method for a liquid-cooling super-intelligent fusion computer, and relates to the technical field of computer heat dissipation control, and the method comprises the steps: collecting and preprocessing state data of a liquid-cooling heat dissipation system and detailed information of a next calculation task, and generating a real-time task-state fusion data set; thermal fluid simulation calculation is conducted on the real-time task-state fusion data set, a future temperature curve is predicted, a simulation result data set is obtained, an aggressive energy efficiency strategy is started according to the simulation result data set, and an ideal rotating speed control instruction sequence is generated; and according to the preprocessed state data of the liquid cooling heat dissipation system, dynamically calculating an estimated dead zone time length, and sending an ideal rotating speed control instruction sequence ahead of the estimated dead zone time length to generate a time advanced control instruction. According to the method, the ideal rotating speed control instruction sequence is generated, so that prospective simulation and energy efficiency optimization decision making of the thermal load of the calculation task are realized, the energy consumption is reduced, and the heat dissipation adaptability is improved.

The invention discloses a liquefied natural gas factory heat-conducting oil furnace tail gas safety treatment device which comprises a cooling assembly, a cyclone dust collector and a purification tower, the cyclone dust collector is sleeved with a cooling sleeve, and the cooling assembly is connected with the cyclone dust collector through a first conveying pipe; the cyclone dust collector is connected with the purification tower through a second conveying pipe, the cooling assembly comprises a tank body, a heat exchange coil pipe is arranged in the tank body, the heat exchange coil pipe comprises an outer pipe body and an inner pipe body, the inner pipe body is sleeved with the outer pipe body, and an interlayer flow channel is formed between the inner pipe body and the outer pipe body. According to the technical key points, tail gas is cooled through the cooling assembly and heat is recycled, most of dust particle impurities in the tail gas are removed through the cyclone dust collector, the tail gas is secondarily cooled through the cooling sleeve and heat is recycled, the dedusted gas enters the purification tower, harmful substances are removed, and the dedusted gas is cooled again. And the purified tail gas reaches the standard at low temperature and is discharged.

The utility model discloses a low-temperature environment oil pool crude oil fluidity enhancing heating device which comprises an oil pool and further comprises a heat supply system, floating heat exchangers, a waste heat recovery device and a control system, the heat supply system is composed of a box oil furnace, a head tank, a heat conduction oil conveying header pipe and a heat conduction oil backflow header pipe and used for providing high-temperature heat conduction oil, and the first floating heat exchanger is connected with the waste heat recovery device. The first floating type heat exchanger is composed of a conical floating barrel and a small heat exchanger, floats on the upper portion of the dirty oil pool and is used for conducting heat of the high-temperature heat conduction oil to crude oil in the oil pool, and heating and thickening of the low-temperature and high-viscosity crude oil are preliminarily achieved; the device consists of an oil-well pump and a matched pipeline thereof, the low-temperature crude oil is indirectly heated through the first floating heat exchanger and the second floating heat exchanger, it is guaranteed that the heating element is away from the oil pool and does not make direct contact with the crude oil, and potential safety hazards of the heating device are greatly reduced.

The invention discloses a cabin multi-dimensional fire simulation method and system for fire personnel training, and the method comprises the steps: carrying out the modeling of a cabin, generating a digital twinborn body of the cabin, carrying out the initialization, and constructing a thermal fluid dynamic field, the digital twinborn body comprises a cabin geometric structure, a combustible material distribution condition and a linkage control interface of fire fighting equipment, and the cabin geometric structure is divided into a plurality of grids; fire information is obtained in real time through a sensor arranged in a cabin and mapped to the corresponding position of the digital twinborn body, a dynamic fire evolution cognitive model used for describing dynamic fire evolution is set, and the dynamic fire evolution cognitive model comprises a thermochemical reaction potential operator and a space coupling operator of flame propagation; and simulating the combustion condition of each grid through a dynamic fire evolution cognitive model, generating a final digital twinborn body, mapping the final digital twinborn body to virtual reality equipment, and completing fire training in a cabin by a user through the virtual reality equipment.

The invention belongs to the technical field of carbon fiber pre-oxidation furnace heating, and particularly relates to the technical field of combustion methods of waste or low-grade fuel, in particular to a pre-oxidation furnace hot air heating method and system coupled with heat recovery. According to the method, fresh air to enter the pre-oxidation furnace is divided into two parts, one path of fresh air is mixed with return air of circulating air in the previous technological process of the pre-oxidation furnace after being subjected to gradient heating for multiple times, third gradient heating is carried out, fourth gradient heating is carried out through a heat conduction oil heater, and secondary gradient heating is carried out; and then another path of fresh air which is heated for one time and not mixed is introduced, the fresh air is mixed with the mixed air heated to the temperature higher than the process temperature again, and after the process temperature is reached, the mixed air is fed into the pre-oxidation furnace. And by controlling the flow of the newly introduced fresh air, the effect of accurately controlling the temperature of the mixed air at the process temperature is achieved.

The invention relates to the technical field of sludge drying, and discloses a conduction oil closed circulation system for sludge drying, which comprises: a conduction oil heating device; the drying machine heat exchange device is used for drying the sludge by utilizing the heat of the heat-conducting oil; the conduction oil transmission pipeline is connected with the conduction oil heating device and the drying machine heat exchange device; the heat conduction oil cooling device is connected with the drying machine heat exchange device and the heat conduction oil heating device; the detection device is used for detecting the temperature of heat-conducting oil in the heat-conducting oil heating device and the heat-conducting oil cooling device; and the control device is used for controlling the drying machine heat exchange device to dry the sludge by using heat of the heat conduction oil when detecting that the temperature of the heat conduction oil in the heating device rises to a first preset temperature, and controlling the heat conduction oil to return to the heat conduction oil heating device when detecting that the heat conduction oil in the cooling device is cooled to a second preset temperature. Therefore, the conduction oil is controlled to circulate among the heating device, the transmission pipeline, the drying machine heat exchange device and the cooling device by detecting the temperature of the conduction oil, and heat energy waste is prevented.

The desulfurization wastewater concentration system utilizing the flue gas waste heat of the coal-fired power plant comprises a flue, and an inlet of the flue is connected with a flue gas outlet of a boiler; the heat conduction oil heat exchanger is arranged on the flue, and an outlet of the heat conduction oil heat exchanger communicates with an inlet of the first pipeline; the heating part comprises a heater, a cold source inlet of the heater is used for introducing desulfurization wastewater, and the heater uses heat of the heat conduction oil in the first pipeline as a heat source so as to heat the desulfurization wastewater introduced into the heater; the evaporator is used for evaporating and concentrating the desulfurization wastewater introduced into the evaporator, the evaporator is provided with a first wastewater inlet, a wastewater outlet and a steam outlet, the first wastewater inlet is communicated with the cold source outlet of the heater, the wastewater outlet is used for discharging the concentrated desulfurization wastewater, and the steam outlet is used for discharging steam. Therefore, according to the desulfurization wastewater concentration system utilizing the flue gas waste heat of the coal-fired power plant, the energy consumption of desulfurization wastewater concentration can be reduced.

A gas turbine combustion system includes a combustor that has at least two injection stages each configured to inject fuel into a combustion chamber of the combustor. A fuel supply circuit is in fluid communication with the at least two injection stages for providing the fuel from a fuel supply to the injection stages. The fuel supply circuit includes at least two branches, each branch being fluidly coupled to a respective injection stage. The gas turbine combustion system further includes at least two heat exchangers fluidly coupled to a thermal fluid supply. Each heat exchanger is disposed in thermal communication on a respective branch of the at least two branches for modifying a temperature of fuel within the respective branch.

The invention relates to the technical field of new energy automobile power battery thermal management, in particular to a hydrated salt phase change microcapsule for a power battery and a preparation method of the hydrated salt phase change microcapsule. According to the specific technical scheme, hydrated salt serves as a core material, methyl methacrylate serves as a shell material monomer, the monomers are polymerized on the surfaces of hydrated salt liquid drops to form a polymethyl methacrylate shell layer through an interfacial polymerization method, effective packaging of a phase change material (hydrated salt) is achieved, and the microcapsule with high phase change latent heat, low leakage rate and long cycle life is obtained. In addition, other doped auxiliary materials are deposited on an oil-water interface to improve the heat conductivity of the microcapsule. And mixing the microcapsules with heat-conducting oil to prepare suspension liquid, and driving the suspension liquid to circularly flow between the power battery packs by a peristaltic pump. According to the invention, microcapsules and liquid cooling heat dissipation are combined to provide a new thought and practical and effective temperature control and heat dissipation effects for a heat management scheme of the power battery pack.

The invention discloses a petroleum coke calcination waste heat stepped recovery rotary kiln system, which belongs to the technical field of rotary kilns, and comprises a kiln body, the kiln body is sequentially provided with a preheating zone and a calcination zone, and the kiln body between the calcination zone and a kiln head is provided with a cooling zone. The cooling zone comprises a first-stage cooling heat exchange section and a second-stage cooling heat exchange section which are sequentially arranged towards the kiln head, the first-stage cooling heat exchange section is used for preheating secondary air, the second-stage cooling heat exchange section is used for cooling calcined coke and recycling heat energy, an annular fin-shaped cooler is arranged on the inner wall of the kiln body of the second-stage cooling heat exchange section, and the annular fin-shaped cooler is used for cooling the calcined coke. A kiln head cover of the kiln body is provided with a rotary joint, and the annular fin-shaped cooler is connected with the outside-kiln heat exchange station through the rotary joint. The cooling zone is arranged in the cylinder of the rotary furnace, secondary air is preheated through the first-stage cooling heat exchange section, heat is recycled in the second-stage cooling heat exchange section through double media of heat conduction oil and demineralized water in a stepped mode, the overall heat recovery rate is obviously increased, and sensible heat waste and comprehensive energy consumption are obviously reduced.

The invention relates to a plastic extruder with a multi-section temperature control function, which is applied to the technical field of plastic extruders and comprises an extrusion barrel, a feeding heating section module, a compression heating section module, a metering heating section module, a heating barrel part, a temperature control oil barrel, a drainage guide pipe, a communication port, a telescopic module, an opening and closing cover, a lifting air cylinder and a pressure piston. The extrusion barrel is provided with the feeding heating section module, the compression heating section module and the metering heating section module, and circulation of heat conduction oil among the feeding heating section module, the compression heating section module and the metering heating section module is controlled; the initial temperature of the feeding heating section module, the compression heating section module and the metering heating section module is increased and reduced, and temperature regulation and control of an electric heating coil on the heating cylinder part are matched, so that the time for reaching the target temperature is shortened, the temperature control regulation efficiency of the plastic extruder is effectively improved, and the hysteresis of temperature rising and falling regulation is effectively reduced.