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3998 results about "Circulator pump" patented technology

A circulator pump or circulating pump is a specific type of pump used to circulate gases, liquids, or slurries in a closed circuit. They are commonly found circulating water in a hydronic heating or cooling system. Because they only circulate liquid within a closed circuit, they only need to overcome the friction of a piping system (as opposed to lifting a fluid from a point of lower potential energy to a point of higher potential energy).

Single-phase and two-phase immersion liquid cooling method and system based on AI intelligent decision

The invention relates to the technical field of data center heat dissipation, and particularly provides a single-phase and two-phase immersion liquid cooling method and system based on AI intelligent decision, and the method comprises the steps: injecting coupled data into a dynamic feature extraction engine, and outputting a thermodynamic state evolution tensor which comprises the characteristics of a temperature change rate, a load-heat flux density coupling coefficient and the like; the thermodynamic state evolution tensor is input into the deep neural network model, the temperature and pressure matched with the current thermodynamic state evolution tensor are calculated, and a closed-loop control instruction set capable of being executed by equipment is generated; a closed-loop control instruction set is injected into an execution mechanism set, execution mechanisms execute power reconstruction and flow channel switching according to instructions, gaseous fluorinated liquid is liquefied and flows back through an efficient condenser in a two-phase mode, and heat dissipation mode self-adaptive switching and heat cycle reconstruction are achieved. The system comprises a server, an AI algorithm controller, a cooling liquid storage device, a condenser, a circulating pump, an electric valve, a pressure release valve and a temperature sensor. The heat dissipation efficiency and the system reliability are remarkably improved.
Owner:TIANJIN TIER TECHNOLOGY CO LTD

Efficient cross-season energy storage energy pile

The invention discloses an efficient cross-season energy storage energy pile, and relates to the technical field of new energy and energy conservation. The problems that in an existing energy storage system, the thermal load prediction error is large, underground thermal diffusion attenuation is caused, the heat exchange capacity is lowered, and the geological adaptability is insufficient are solved. According to the scheme, an LA mixed time sequence prediction model is adopted to optimize load prediction, a distributed optical fiber temperature measurement array and a finite element inversion algorithm are combined to accurately reconstruct a stratum temperature field, and the geological type is identified based on a support vector machine classifier to realize self-adaptive regulation and control of heat exchange parameters; meanwhile, the heat pump power, the circulating pump frequency and the heat charging and discharging rate of the phase change material are optimized through a depth deterministic strategy gradient algorithm and a gradient heat release strategy; the heat exchange efficiency, the long-term stability and the complex environment adaptability of the cross-season energy storage system are remarkably improved, and the energy-saving effect of a building energy supply system is improved.
Owner:HENAN JUAN HEATING TECH CO LTD

Efficient magnetic suspension water chilling unit control system

The invention relates to the technical field of automatic control, in particular to an efficient magnetic suspension water chilling unit control system which comprises a refrigerant flow monitoring module, a dynamic flow adjusting module, a start-stop delay judging module, a temperature gradient sensing module and a frequency self-adaptive adjusting module. According to the method, the temperature difference curve is established through real-time monitoring data, the refrigerant flow synchronism is analyzed, temperature difference abnormity can be accurately recognized, the refrigerant adjusting requirement is extracted, traditional threshold value judgment lag is avoided, the refrigerant flow is controlled in real time, fluctuation impact is buffered, and the adjusting precision is improved by dynamically adjusting the opening degree of the electronic expansion valve and the rotating speed of the circulating pump; the method has the advantages that starting and stopping conditions are accurately judged, misoperation is reduced, early positioning of thermal imbalance is achieved through temperature difference sensing of an evaporator, a compression cavity and a condenser and establishment of an internal temperature difference distribution diagram, energy efficiency reduction is avoided, the frequency of a frequency converter is adjusted according to temperature difference distribution, the optimal load is matched, frequency adaptivity and system load response are improved, and refrigeration cycle energy efficiency is optimized.
Owner:SHENZHEN DANNES MASCH CO LTD

Data center intelligent harmonic dynamic compensation method and system

The invention provides an intelligent harmonic dynamic compensation method and system for a data center. According to the method, server heat source surface temperature field distribution is monitored in real time through a distributed optical fiber temperature measurement array, and a dynamic impedance spectrum is generated; when the temperature gradient exceeds the flash evaporation critical value of the fluorinated cooling liquid, an active filter is activated to carry out dynamic impedance matching compensation on high-frequency harmonic current in the liquid cooling tank cabinet, and a pulse width modulation control signal of a circulating pump is generated; the compensation power of the filter and the turbulence intensity of the cooling liquid are synchronously adjusted by analyzing the coupling relation between the flowing vortex intensity of the cooling liquid and the dielectric polarization loss; when phase mismatch of a temperature field is caused by heat dissipation of multiple heat sources, a multi-band compensation strategy is reconstructed by utilizing frequency domain characteristics of a pulse width modulation signal and a compensation power historical value, and a cooling liquid branch flow distribution ratio and a filter frequency response curve are cooperatively adjusted. According to the technical scheme, the thermal stability and the electrical safety of the data center cooling machine room are improved.
Owner:TIANJIN UNIV

Charging pile liquid cooling three-level leakage prevention and pump barrier prevention intelligent control method and system

The invention discloses a charging pile liquid cooling three-level leakage prevention and pump obstacle prevention intelligent control method and system, and relates to the technical field of liquid cooling control. The charging pile liquid cooling three-level leakage prevention and pump obstacle prevention intelligent control method comprises the steps that S1, liquid cooling monitoring data are periodically collected, and the liquid cooling monitoring data are preprocessed; s2, judging whether an abnormal period exists or not, and evaluating whether a cooling liquid leakage trend exists or not in combination with real-time liquid cooling monitoring data; s3, performing coolant leakage risk grade evaluation, judging the leakage risk grade in the current abnormal period, and executing a corresponding leakage prevention strategy; and S4, in the execution process of the anti-leakage strategy, the running state of the circulating pump is evaluated, and whether the pump obstacle prevention and control strategy is triggered or not is judged. The problem that thermal runaway is caused by the fact that cooling abnormity is not intervened in time due to the fact that leakage of trace cooling liquid in an existing liquid cooling system is difficult to recognize in time and pump obstacles are difficult to pre-judge accurately is solved.
Owner:TIANJIN TIER TECHNOLOGY CO LTD

Cold plate-immersion liquid cooling cooperative heat dissipation method based on steam zone coupling modeling

The invention discloses a cold plate-immersion liquid cooling cooperative heat dissipation method based on steam zone coupling modeling, and relates to the technical field of cooperative heat dissipation. Comprising the following steps of S1, collecting collaborative heat dissipation monitoring data of each key position in real time, and performing data preprocessing; s2, the comprehensive risk of the steam area is judged, and a risk cooling adjustment instruction is issued according to the comprehensive risk judgment result; s3, receiving a risk cooling adjustment instruction, carrying out collaborative heat dissipation, evaluating the collaborative heat dissipation capability, adjusting the rotating speed of a circulating pump and the opening degree of a valve, and requesting condensation backflow adjustment; s4, judging the adjusting quantity of condensation reflux, executing reflux adjustment and performing safety monitoring; and S5, continuously monitoring the data of each link, and carrying out anomaly detection on the state of each link to realize anomaly regulation and control. The problems that in an existing single-phase cold plate or two-phase immersion liquid cooling mode, steam accumulation is prone to occurring in a high-heat-flow scene, so that the pressure intensity is increased, the boiling point is increased, and the heat exchange efficiency is reduced, and then the operation reliability of equipment is affected are solved.
Owner:TIANJIN TIER TECHNOLOGY CO LTD

Split type direct current charging pile liquid cooling heat dissipation system

The invention provides a split type direct-current charging pile liquid cooling heat dissipation system, and belongs to the technical field of direct-current charging piles, a closed liquid cooling circulation system is constructed through equipment such as a liquid cooling circulation pump, a radiator assembly and a temperature sensor array, and active temperature control is realized by adopting a temperature pre-adjusting module as a core. The system firstly collects power and temperature data to establish a power heat effect function to describe a power-temperature relationship, and extracts temperature time sequence characteristics through a heat situation sensing model by adopting an improved time sequence convolutional network to configure a self-adaptive receptive field adjustment mechanism to capture different time scale change modes; and constructing a double-layer optimization framework in combination with a temperature control game model to solve a Nash equilibrium solution, and calculating an optimal cooling adjustment vector including advanced cooling time and cooling power parameters. And a change curve is generated through real-time monitoring and dynamic correction and is converted into a control instruction, the frequency converter is controlled to adjust the rotating speed of the circulating pump and the opening of the flow valve, and advanced adjustment before temperature change is achieved to eliminate response lag.
Owner:QINGDAO HIGH TECH COMM

Gas waste heat utilization method and system based on artificial intelligence

The invention relates to the technical field of gas waste heat utilization, and discloses a gas waste heat utilization method and system based on artificial intelligence. The method comprises the steps that sensor parameters of the gas extraction system are collected in real time and processed, and a standardized data set is obtained; the standardized data set is input into a fusion convolution Transform neural network for analysis modeling, and a gas waste heat prediction model is obtained; performing decision analysis on gas waste heat utilization based on the gas waste heat prediction model and a preset expert knowledge base to obtain a control strategy; and performing parameter regulation and control on a heat exchanger, a waste heat boiler, a circulating pump and control valve equipment according to the control strategy to obtain a gradient utilization execution scheme. The gas waste heat recovery strategy is dynamically adjusted, and the safety of the system is guaranteed while it is ensured that gas waste heat is efficiently recovered.
Owner:JINCHENG LANYAN COAL IND CO LTD CO LTD CHENGZHUANG MINE

Self-adaptive liquid cooling heat dissipation device and method for land energy storage container

The invention discloses a land energy storage container self-adaptive liquid cooling heat dissipation device and method, the device comprises a liquid cooling unit, a self-adaptive circulation pipeline, a variable flow pump valve group, a distributed temperature sensing module and a BMS main control module, through data monitoring, model establishment, thermal load prediction, selection of a proper cooling mode, and introduction of reasonable compensation, the self-adaptive liquid cooling heat dissipation of the land energy storage container is realized. And the variable-frequency circulating pump and the valve body are adjusted and combined for execution. Through multi-parameter fusion control, dynamic impedance matching and intelligent algorithm optimization, a cooperative control mode of a variable orifice regulating valve and a variable frequency circulating pump is innovatively adopted, and dynamic matching of cooling loop impedance is achieved; through temperature field modeling, heat dissipation demand grading prediction, a cooling parameter self-optimization algorithm and fault self-diagnosis, the balance degree of the temperature field is effectively improved, heat dissipation energy consumption is reduced, environmental adaptability is enhanced, and meanwhile the method has the advantages of being high in reliability, wide in environmental adaptability and low in operation and maintenance cost.
Owner:SHENGSHI CONTAINER MANAGEMENT SHANGHAI +1

Device and method for detecting uniformity of flow field of flow battery

The invention relates to the technical field of flow batteries, in particular to a flow battery flow field uniformity detection device and a detection method, and the flow battery flow field uniformity detection device comprises a visual flow field assembly, a constant temperature water tank, a circulating pump, a pressure gauge, a thermal imager and a connecting pipeline. The visual flow field assembly, the constant-temperature water tank, the circulating pump and the pressure gauge are connected through connecting pipelines, the shooting range of the thermal imager covers the whole visual flow field area, and the temperature change of the flow field area along with time is recorded. According to the invention, the temperature change rate of the fluid at the outlet is controlled by adjusting the heating power of the water tank, and when the fluid passes through the flow channel of the electrode frame, a relatively large temperature gradient is ensured in the flow channel range of the whole visual flow field assembly. And calculating a temperature deviation value to evaluate the fluid uniformity according to the linear relationship between the temperature difference and the speed difference.
Owner:HANGZHOU DEHAI AIKE ENERGY TECH CO LTD

Intelligent optimization control method of alkaline water hydrogen production system

The invention relates to the technical field of industrial process control, and discloses an intelligent optimization control method of an alkaline water hydrogen production system, which comprises the following steps: a controller synchronously acquires real-time voltage, current and temperature data of an electrolytic bath; theoretical reversible voltage is calculated according to a Nernst equation, ohm voltage drop is eliminated, and a bubble additional impedance value representing the bubble coverage degree is analyzed; performing differential processing on the change rate of the bubble additional impedance value to generate a flow feed-forward control instruction, combining a feedback control instruction based on temperature deviation to synthesize a target rotating speed instruction, and driving an alkali liquor circulating pump to adjust the flow speed; according to the method, the bubble impedance observation model is constructed, so that zero-delay sensing and decoupling control over the state of bubbles in the electrolytic cell are achieved, hysteresis of single temperature feedback is eliminated, and the problems of actuator saturation and model aging drifting are solved.
Owner:HUADIAN HEAVY MACHINERY

Intelligent control method for heat supply digital twinning

The invention provides a heat supply digital twinborn intelligent regulation and control method, and relates to the technical field of intelligent regulation and control, and the method comprises the steps: executing millisecond-level high-concurrency numerical simulation according to a dynamic digital twinborn body, so as to obtain a simulation result; based on the simulation result, coupling the electricity price fluctuation data and the weather prediction data, performing future heat supply system multi-working-condition deduction, and dynamically optimizing a heat source unit start-stop combination and pipe network valve opening strategy to obtain a deduction result and an optimization strategy; generating an equipment regulation and control instruction set according to the deduction result and the optimization strategy; and an equipment regulation and control instruction set is issued to an edge computing node, a variable-frequency circulating pump and an electric control valve executing mechanism are controlled, and dynamic closed-loop regulation of the flow and the pressure of the heat supply pipe network is achieved. According to the invention, the pipe network flow and pressure regulation response time can be shortened to a second level.
Owner:YUANHUA YITONG HEAT SUPPLY SCI TECH DEV BEIJING

Heating and ventilation heating power constant-temperature variable-flow control method

The invention relates to the technical field of temperature control, in particular to a heating and ventilation heating power constant-temperature variable-flow control method, and provides the following scheme that circulating pump frequency instructions and water temperature response data of multiple historical regulation and control periods are collected, and a dynamic track of the current water temperature in a temperature inertia field is constructed; calculating an attraction potential energy state between the current water temperature and a target constant temperature value in combination with the disturbance residual matrix; and outputting the frequency bandwidth interval of the circulating pump based on the state to realize dynamic adjustment. An adjacency matrix and a Laplacian matrix are constructed by introducing a hydraulic communication relation, spatial convolution and weighted updating are performed on disturbance residues in combination with a topological diffusion core, and accurate propagation and suppression of disturbance are realized. The method can effectively solve the problems of nonlinear response, delay effect and disturbance coupling of the water temperature to the pump frequency, and the temperature stability and the energy utilization efficiency of a heating system are improved.
Owner:SHANGHAI PANDA MACHINEGRP CO LTD

Liquid cooling pipeline and phase change material compounded novel energy storage system and method

The invention relates to a liquid cooling pipeline and phase change material compounded novel energy storage system and method, which are mainly applied to the field of battery energy storage in an extremely cold environment. The system comprises a liquid cooling unit, a liquid cooling pipeline system, a battery cluster, a phase change module, a multi-stage bypass system, a valve system and a circulating pump. Through cooperative work of the liquid cooling unit and the phase change module, the system can recover the heat of the cooling liquid after the battery is heated and store the heat in the phase change module, and the heat stored in the phase change module is preferentially used for heating when the temperature of the battery is relatively low, so that the energy consumption of the liquid cooling unit is reduced, and the energy efficiency of the system is improved.
Owner:NORTH CHINA ELECTRIC POWER UNIV

Concrete regulation and control system and method integrating heat recovery, spraying and gradient control

The invention provides a concrete regulation and control system and method integrating heat recovery, spraying and gradient control, and relates to the technical field of concrete curing, and the concrete regulation and control system comprises a temperature sensing element and a humidity sensing element which are mounted on reinforcing steel bars in a concrete structure in a layered manner in the depth direction; the cooling water circulating system comprises a water pump and a cooling water pipe, and the cooling water pipe is arranged in the mass concrete structure and externally connected with a variable frequency circulating pump; the double-water-tank system is matched with the heater to realize graded regulation of water temperature; the automatic spraying system is connected with the integrated electric heating module; the heat recovery and circulation assembly is connected with an outlet of a cooling water pipe in the concrete, recovers concrete hydration heat brought out by the cooling water pipe, and transfers heat of high-temperature cooling water with the temperature being 50 DEG C or above to the phase change heat storage tank; the central control unit continuously receives and records monitoring data of the temperature sensor and the humidity sensor and analyzes the monitoring data in real time, and when the temperature gradient or the humidity gradient exceeds the limit, a gradient field control instruction is automatically triggered to achieve energy efficiency maximization.
Owner:SHANGHAI NANHUI BUILDING ENG LTD +1

Control method and system of energy-saving ground source heat pump

The invention discloses an energy-saving ground source heat pump control method and system, and the method comprises the steps: building a ground source heat pump system dynamic model which comprises an indoor heat balance model, a ground source heat pump unit model and a soil heat exchange model, obtaining a topological network through coupling, designing a distributed control and fault-tolerant operation strategy according to the topological network structure, and carrying out the control of the ground source heat pump system. Each node is locally controlled according to the position and adjacent node information, a state space model is constructed, an optimal control action sequence is solved through quadratic programming to balance energy consumption and an indoor and outdoor temperature deviation objective function, the optimal operation state is obtained, and the mapping relation between the optimal operation state and environment parameters is learned through a neural network; a ground source circulation flow control algorithm is designed, and circulation pump flow distribution and unit working parameter automatic adjustment are achieved. According to the method, the control precision and stability of the ground source heat pump system can be effectively improved, reliable operation of the ground source heat pump system under complex working conditions is ensured, the energy utilization efficiency is remarkably improved, energy conservation and consumption reduction are achieved, and meanwhile good interpretability is achieved.
Owner:北京市科学技术研究院资源环境研究所(北京市土地修复工程技术研究中心)

Energy recovery and heat supply system and method based on thermoelectric conversion

The invention belongs to the technical field of waste heat recovery and discloses an energy recovery and heat supply system and method based on thermoelectric conversion, and the method comprises the steps that an energy recovery unit collects heat of an industrial waste heat source, and a circulating pump drives a heat transfer medium to circulate in a pipeline; a stable temperature difference is formed at the two ends of the thermoelectric module, and thermoelectric conversion is carried out; the electric energy management unit rectifies and stabilizes the electric energy output by the thermoelectric module; a part of the electric energy after voltage stabilization is stored in a storage battery pack; the electric heating boiler is driven by electric energy to work; the heated hot water is conveyed to an area needing heat supply; and the monitoring module is controlled to operate to perform operation processing according to a preset algorithm and heat supply requirements. The energy recovery and utilization efficiency is high, waste heat resources which are wasted originally can be effectively recovered and converted into electric energy and heat energy to be used, an electric energy storage device, an auxiliary heating device and a monitoring system are arranged, and heat supply stability and continuity can be guaranteed under various working conditions.
Owner:JINAN METROLOGY TESTING INST

Preparation method of high-purity lithium sulfide

The invention belongs to the technical field of lithium battery materials, and particularly relates to a preparation method of high-purity lithium sulfide. Comprising the following steps: putting lithium hydroxide and pure water into a reaction kettle, replacing air in the reaction kettle with nitrogen, starting the reaction kettle, and stirring and heating; introducing quantitative hydrogen sulfide gas from the bottom of the reaction kettle, and circulating the gas in the reaction kettle between liquid in the reaction kettle and a gas space through a gas circulating pump; and after the temperature of the reaction liquid in the kettle is reduced to 20-30 DEG C, filtering in a nitrogen atmosphere, washing the residual solid with quantitative ammonia water, transferring the filtered solid into a drying box, and purging and drying with nitrogen until no water exists, thereby obtaining the high-purity lithium sulfide. In the solvent method, water is used for replacing an organic solvent for reaction, the problems of organic solvent separation and recovery, hazardous waste treatment and the like are avoided, the cost is reduced, and the method is environment-friendly.
Owner:SHANDONG TAIHE WATER TREATMENT TECH CO LTD

Monitoring device and monitoring method for dissolved gas in on-load tap-changer oil

The invention discloses an on-load tap-changer oil dissolved gas monitoring device which comprises a variable capacity container, a two-way electromagnetic valve, a switching mechanism, a chromatographic column system, a high-sensitivity detector and a low-sensitivity detector which are sequentially connected, and the top and the bottom of the variable capacity container are connected through a circulating pump to form a gas flow loop. The variable-capacity container is connected with the on-load tap-changer through a connecting pipe, the switching mechanism is connected with at least two quantitative pipes with different capacities, and the switching mechanism is used for equally transferring gas in the variable-capacity container to the quantitative pipes and then sequentially transferring the gas in the quantitative pipes to the chromatographic column system. The invention further discloses a method for monitoring the dissolved gas in the on-load tap-changer oil. According to the monitoring device and the monitoring method for the dissolved gas in the oil of the on-load tap-changer, the detection range of the concentration is improved, a concentration blind area which is not detected and misjudgment of signal saturation can be avoided, and the detection accuracy is improved.
Owner:STATE GRID HUNAN ELECTRIC POWER CO LTD MAINTENANCE CO +2

Immersion phase change and jet flow cooperative strengthening energy storage power station thermal management system

The invention relates to the technical field of thermal management of energy storage power stations, and discloses an immersion phase change and jet flow cooperative reinforcement thermal management system of an energy storage power station. An immersed phase-change cooling tank body of the system contains an energy storage battery pack and a low-boiling-point fluorinated liquid cooling liquid, so that the whole battery pack is immersed in the immersed phase-change cooling tank body; the condensation recovery device is connected with a steam outlet condensation vaporization medium; the liquid storage distribution unit comprises a main liquid storage tank and a special liquid storage tank, the main liquid storage tank is connected with the condensation recovery device, and the special liquid storage tank is connected with the bottom of the tank body through an electromagnetic drain valve; the multi-layer jet strengthening module comprises a top-layer annular jet pipeline, a bottom-layer annular jet pipeline and a middle-layer annular jet pipeline, the top-layer annular jet pipeline and the bottom-layer annular jet pipeline are connected with a main liquid storage tank and reflow through a circulating pump, and the middle-layer annular jet pipeline is connected with a special liquid storage tank driven by a high-pressure pump and provided with The temperature monitoring array acquires the real-time surface temperature of the battery pack in a distributed manner The dynamic control center is connected with all the modules. According to the system, efficient and uniform heat management of the energy storage battery pack is realized through cooperation of phase change and jet flow.
Owner:TIANJIN TIER TECHNOLOGY CO LTD

CO2-water-rock dynamic reaction simulation device and experiment method

The invention discloses a CO2-water-rock dynamic reaction simulation device and an experiment method, and relates to the technical field of geochemical water-rock reaction, the simulation device comprises a gas-liquid internal circulation system, a CO2 input and monitoring system, a temperature control system, a pressure control system and a pH monitoring system; wherein the gas-liquid internal circulation system comprises a core holder and a circulating pump, the core holder is used for fixing a sample and applying confining pressure to the sample, and the gas-liquid internal circulation system can realize continuous fluid-solid coupling physical simulation under a high-pressure condition and continuously monitor environmental pH and circulating confining pressure at the same time; the CO2 input and monitoring system can accurately measure the CO2 injection and discharge amount, and the CO2 geological storage amount in the CO2-water-rock dynamic reaction process and the rock permeability before and after the reaction are obtained. The high-temperature and high-pressure environment of the reservoir under the in-situ condition is simulated in a laboratory, the geochemical response of the CO2-water-rock system and the permeability evolution characteristic of the sample are monitored at the same time, and guidance is provided for improving the existing CO2 enhanced oil and gas exploitation and CO2 geological storage technology.
Owner:CHINA UNIV OF MINING & TECH

Accurate electrolyte flow regulation and control system and method based on variable-frequency circulating pump

The invention relates to the technical field of hydrogen production, in particular to an electrolyte flow accurate regulation and control system and method based on a variable-frequency circulating pump. Comprising a frequency conversion circulating pump set with a dual-redundancy structure, and a main pump and a standby pump of the frequency conversion circulating pump set adopt coaxial linkage design and form a bidirectional pressure balance loop with an electrolyte circulating pipeline; the multi-parameter fusion detection module is integrated with a high-frequency sampling flowmeter, an anion concentration sensor with a temperature compensation function and a three-channel pressure transmitter, and signals of all the sensors are subjected to time synchronization processing to generate a joint detection data packet; the dynamic compensation controller is internally provided with an anion migration characteristic database and an electrolyte rheology model, and generates a control instruction with an advanced compensation function according to the real-time anion concentration variable quantity; the multi-physical-field parameter change of the electrolyte can be sensed in real time, the control instruction is dynamically corrected, and the anti-interference capability is high.
Owner:BEIJING YINENG HYDROGEN SOURCE TECHNOLOGY CO LTD

Anti-icing refrigeration method and system

The invention relates to the technical field of refrigeration, in particular to an anti-icing refrigeration method and system.The anti-icing refrigeration method comprises the steps that water temperature data in a water tank are collected in real time, and temperature dynamic parameters reflecting the temperature change trend and stability are calculated; dynamically adjusting the opening degree of the electronic expansion valve based on the temperature dynamic parameter; when the temperature dynamic parameter meets a preset icing triggering condition, deicing circulation is executed; a compressor and an electronic expansion valve are closed, and a circulating pump is started; monitoring the temperature dynamic parameter in real time in the deicing cycle, dynamically adjusting the duration of the deicing cycle based on the temperature dynamic parameter, judging whether a preset deicing completion condition is met or not based on the temperature dynamic parameter, if not, continuing the deicing cycle, and if yes, terminating the deicing cycle. And the compressor and the electronic expansion valve are restarted to recover the refrigeration cycle. The technical problems that in the prior art, due to freezing, energy consumption of a refrigerating system is too high, and the automation degree is insufficient are solved.
Owner:FOSHAN SHUIJINGDAO LEISURE EQUIP

Composite cold plate-phase change cold storage coupled liquid cooling server heat dissipation device

The invention discloses a composite cold plate-phase change cold storage coupled liquid cooling server heat dissipation device, which comprises a composite plate assembly, the composite plate assembly comprises a cold plate seat, a cold plate module, a phase change cooling module, an input port, an output port and an assembling mechanism, the cold plate seat is internally provided with a supporting and lining groove, and the supporting and lining groove is internally provided with a supporting and lining groove; the phase change cooling module is installed at the lower end of the cold plate module in an embedded mode, the input port and the output port are installed on the upper end face of the cold plate module, the lower end face of the cold plate module is movably connected with the upper end face of the supporting and lining groove, and the cold plate module is connected with an inner cavity of the cold plate base in a sleeved mode. A first connecting pipe is installed between the circulating pump and the output port and used for circulating cooling liquid in the circulating pump, and the cold storage assembly comprises a liquid storage box, a cover plate, cooling fins and a cooling fan. Through the coupling design of the composite cold plate and the phase change material, efficient absorption, dynamic buffering and multi-stage recovery of heat of the server are achieved, and the bottleneck of traditional liquid cooling heat dissipation is broken through.
Owner:ZHEJIANG WULUO SMART CITY TECHNOLOGY CO LTD

Slurry circulating pump state monitoring method and related equipment

The invention discloses a slurry circulating pump state monitoring method and related equipment, and aims to overcome the defects of high false alarm rate and late early warning caused by multi-fault coupling effect and strong background noise interference in the prior art. The method comprises the following steps: synchronously acquiring vibration, acoustic emission, pressure pulsation and temperature signals of a pump volute, an outlet pipeline and a bearing seat; performing wavelet packet decomposition on the acoustic emission signals, extracting features and generating cavitation sensitive factors; a digital twinborn model adapted to fluid-structure coupling simulation and transfer learning is utilized to calculate a deviation value between the monitoring feature and a normal baseline; and when the deviation value exceeds a threshold value, fault identification and life prediction are carried out. Through multi-signal fusion and a dynamic threshold mechanism, a multi-fault coupling effect and strong background noise interference are effectively overcome, and the reliability of a monitoring system is improved.
Owner:HUANENG CHONGQING LUOWEN POWER CO LTD +1

Self-adaptive optimization control method and system for characteristics of circulating pump of heat exchange station

The invention discloses a heat exchange station circulating pump characteristic adaptive optimization control method and system, and relates to the technical field of circulating pump control, and the method comprises the steps: building a building terminal heat transfer model and a building energy balance model based on the temperature distribution of the surface of a radiator, and then building a building load prediction model; performing numerical modeling on the performance curve of the heat exchange station circulating pump, and establishing a circulating pump performance model; based on a depth deterministic strategy gradient algorithm, establishing a neural network control model for self-adaptive control of the circulating pump of the heat exchange station; establishing a state, an action and a reward function of an agent of the neural network control model; and training the neural network control model to obtain a trained control model, and performing real-time control on the heat exchange station circulating pump based on the trained control model. The technical problems that a traditional control method of the circulating pump is low in operation efficiency and serious in energy waste are solved.
Owner:TIANJIN JINAN THERMAL POWER

New energy automobile battery temperature control system

The invention provides a new energy automobile battery temperature control system which comprises a battery pack, a battery pack, a liquid cooling pipeline, a backflow pipeline, an expansion water tank, a first circulating pump, a heat exchange body, a second circulating pump, a heat pump system, a resistance heater and a PTC heater. The battery pack is arranged in an inner cavity of the battery pack, the liquid cooling pipeline and the backflow pipeline are both located in the inner cavity of the battery pack and surround the battery pack, and a temperature sensor is arranged in the inner cavity of the battery pack; the liquid cooling pipeline and the backflow pipeline are provided with a plurality of branches, and each branch is provided with a temperature sensor. A three-way valve is arranged at one end of the liquid cooling pipeline and one end of the backflow pipeline; the liquid cooling pipeline is connected with the first circulating pump and penetrates through the heat exchange body to form a circulating loop with the expansion water tank, the heat exchange body is connected with the second circulating pump, the other end of the backflow pipeline is connected with the heat pump system, the other end of the heat pump system is connected with the PTC heater, and one end of the first circulating pump is connected with the resistance heater.
Owner:FUJIAN LIANYUE IND CO LTD

Immersed liquid-cooled power battery thermal management system

The invention relates to the technical field of battery thermal management, in particular to an immersed liquid-cooled power battery thermal management system, which is provided with a data processing unit and integrates a plurality of modules such as a data storage module, a data analysis module, a data control module and the like, and the data storage module can store real-time data of a cooling unit and can also store normal operation data information. The data analysis module carries out comparative analysis on real-time data and normal operation data and accurately grasps the temperature change trend, and the data control module carries out intelligent control on the whole thermal management system according to a preset strategy and an analysis result, so that the working state of the cooling unit is accurately adjusted; the rotating speed of the circulating pump and the working strength of the radiator are adjusted according to the difference between the highest temperature of the battery cell and the initial temperature of the cooling liquid to ensure efficient operation of the system.
Owner:YANGZHOU JIAHE NEW ENERGY TECH CO LTD

Conduction oil boiler system optimization control method and system based on adaptive algorithm

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.
Owner:SHANGHAI DIETENG NETWORK TECH

High-power fuel cell hydrogen system and control method

The invention provides a high-power fuel cell hydrogen system and a control method, a high-power fuel cell comprises a plurality of galvanic pile groups, the galvanic pile groups are connected in parallel to realize power supply, each galvanic pile group comprises a plurality of galvanic pile units, the galvanic pile units are connected in series one by one, and the hydrogen system adjusts hydrogen distribution among piles according to different working conditions; a hydrogen circulation mode that the hydrogen circulation pump and the ejector are connected in parallel is adopted, so that the hydrogen circulation quantity requirements of the high-power fuel cell under different working conditions can be met; according to the control method, a PID air inlet control strategy with feedforward and a hydrogen circulation control strategy are adopted, the air inlet control strategy can achieve quick response when the working condition of the electric pile changes dynamically, the hydrogen flow and pressure are controlled more quickly and effectively, and the hydrogen circulation control strategy can meet the hydrogen flow requirements under different load working conditions; the reliability and stability of the fuel cell system are improved, the working efficiency of the high-power fuel cell system can be improved, and the service life of the high-power fuel cell system can be prolonged.
Owner:FUZHOU UNIV