1745 results about "Accumulator (energy)" patented technology

A work apparatus includes a tool, a drive motor for driving the tool, at least one handle for guiding the work apparatus during operation, at least one electric heater for the handle, an electric energy store which supplies the drive motor and the at least one heater with electric energy, and a control unit which is configured to control the electric power supplied to the at least one heater. It is provided that the work apparatus is configured to provide the maximum electric power made available to the at least one heater as a function of a charging state of the energy store. The control unit only switches the at least one heater on and off, and the heater in the switched-on state is operated directly with the voltage provided by the energy store.

The invention discloses a micro-grid park integrated energy system planning method and device, a terminal and a medium. The method comprises the following steps: acquiring energy demand data, time-of-use electricity price information, natural gas price and meteorological information of a park to be planned, and equipment parameters, equipment investment cost and equipment maintenance cost in an integrated energy system of the park to be planned; the influence of temperature change on thermodynamic characteristics of steam is considered, and equivalent energy storage of a steam heat accumulator of the microgrid park is modeled by considering valley electricity heat storage; setting constraint conditions of a planning model according to the acquired data information, and taking the minimum comprehensive cost as an objective function, thereby constructing a cold-hot electro-optical storage and charging integrated microgrid park planning model considering electric power-steam multi-energy complementation; and solving the planning model, and outputting a planning scheme about whether each device in the integrated energy system is configured, the configuration capacity and the operation output curve of each configured device. According to the invention, the energy structure of the park is optimized, the resource utilization efficiency is improved, and the stability of the system is enhanced.

The invention provides a reproduction lifting and diving test device, and belongs to the technical field of mechanical control. The problems that a guide rail needs to bear large lateral force for achieving the working conditions of large load mass, large reproduction acceleration and long stroke of existing equipment, and particularly when the stroke is large, the lateral force enables the guide rail to deform greatly are solved. The device comprises lifting actuator assemblies, a cross beam assembly, a motion platform, stand columns, a base and a moment balance assembly, the stand columns are installed at the four corners of the lower end face of the cross beam assembly, the bottoms of the stand columns are connected with the base, the motion platform is installed on the stand columns in a sliding mode, and the four lifting actuator assemblies penetrate through the cross beam assembly to be connected with the motion platform; a moment balance assembly is installed at the joint of the motion platform and the stand column, and an energy accumulator assembly used for supplying energy to the lifting actuator assembly is installed on the cross beam assembly. The device is mainly used for testing the working conditions of large load mass, large reproduction acceleration and long stroke.

The invention relates to an energy accumulator durability test method and system, and the system comprises an extreme working condition simulation module which can achieve high-voltage, wide-temperature-range and high-frequency dynamic loading; the multi-sensor monitoring network integrates a fiber bragg grating strain sensor, a three-axis acceleration sensor and an acoustic emission sensor to realize collaborative monitoring of strain, vibration and microcracks; the intelligent control and energy recovery module is combined with a fuzzy PID and reinforcement learning algorithm, a magnetorheological fluid generator and a super capacitor bank, so that the control precision and the energy utilization rate are improved; and the data analysis and life evaluation platform accurately predicts the residual life by using an improved Bayesian network model and a real-time health index calculation module. According to the test method, a loading mode is dynamically adjusted through a real-time health index, an energy recovery strategy is optimized, and life early warning is triggered. The invention breaks through the limitation of the traditional test and provides an integrated solution.

The utility model relates to the technical field of marine scientific investigation equipment, in particular to a winch emergency lowering and pressure compensation system which comprises a reversing valve, a winch assembly, a brake assembly and an emergency function assembly. The brake part is controlled by a brake assembly to brake the power motor, and two cavities of the power motor are communicated with the reversing valve to form a working loop. The emergency function assembly comprises an energy accumulator, a first stop valve, a hydraulic control valve and a speed regulating valve, the first stop valve, the hydraulic control valve and the speed regulating valve are sequentially communicated, the first stop valve and the speed regulating valve are correspondingly communicated with two cavities of the power motor to form an emergency lowering loop, and the energy accumulator is communicated with one cavity of the power motor through an energy storage oil way. The energy accumulator is further communicated with the two cavities of the power motor through a compensation oil way, the working loop and the compensation oil way are each provided with a control oil way for providing a control oil source for the brake assembly, and a second stop valve is arranged on the control oil way of the compensation oil way.

The invention provides a hydraulic control system of an asymmetric hydraulic cylinder, and relates to the technical field of hydraulic control, the hydraulic control system comprises a bidirectional hydraulic pump, a hydraulic motor and an energy accumulator, the bidirectional hydraulic pump is in transmission connection with a first servo motor, and a first oil port and a second oil port of the bidirectional hydraulic pump are connected with a rod cavity and a rodless cavity through a first oil way and a second oil way respectively; a first one-way valve is arranged between the second oil port and the rodless cavity; the hydraulic motor is in transmission connection with the generator which is connected with the electric energy storage unit. The hydraulic motor is connected with the first one-way valve in parallel; the energy accumulator communicates with the first oil way and the second oil way through a second one-way valve and a third one-way valve correspondingly. Four-quadrant seamless switching can be achieved, the structure is simpler, the complexity of a pipeline in a hydraulic system is remarkably reduced, energy collection can be conducted on oil discharged by a rodless cavity, and energy consumption is further reduced.

The invention discloses an opening and closing hydraulic system and a control method. The system comprises an oil cylinder, an oil tank, an energy accumulator, a pump set, a detection module, an opening and closing loop and an adjusting loop. The connecting end of the opening and closing loop is connected with a rod cavity and a rodless cavity of the oil cylinder, and an oil inlet of the opening and closing loop is in redundant connection with the energy accumulator and the pump set. The detection module is used for monitoring the slurry outlet amount of a material opening and the position of an oil cylinder; the adjusting loop is connected to the opening and closing loop in parallel and suitable for controlling the oil cylinder to adjust the opening degree of the material opening according to the monitoring result of the detection module. The method is applied to the system. The device has the beneficial effects that the opening degree of the material opening can be accurately controlled through the adjusting loop, and manual adjustment is not needed; and closed-loop control is performed through the flow rate of slurry at the material port, the opening degree of the material port is adjusted in real time, and the stability of the discharging amount is ensured.

The utility model discloses a diaphragm type energy accumulator, which relates to the energy accumulator field, and comprises a container main body, the top of the container main body is provided with an air inlet channel, the outer ring of the top of the air inlet channel is in threaded connection with a protection nut, the inside of the air inlet channel is in threaded connection with a mounting sleeve, and the inside of the mounting sleeve is in threaded connection with a threaded block. And a notch is formed in the threaded block, a short rod is movably installed in the notch, the lower end of the short rod is fixedly connected with a sealing block, a second thread is arranged on the outer ring of the short rod, the outer ring of the second thread is in threaded connection with a top plate, and the top plate is connected with the threaded block assembly through a spring. The mounting sleeve is separated from the air inlet channel by twisting the mounting sleeve, and the threaded block and the top plate are separated from the mounting sleeve and the short rod by twisting the threaded block and the top plate, so that the spring can be taken down for replacement, subsequent twisting mounting is relatively convenient, and meanwhile, air filling is more convenient due to the arrangement of the air inlet channel.

The invention discloses a whole-vehicle thermal management system of a pure electric vehicle based on a shell-and-tube phase change heat accumulator and a control method of the whole-vehicle thermal management system. The whole-vehicle thermal management system comprises a control module, a heat pump air conditioning system, an electric heating and phase change heat storage system, a battery thermal management system and an electric drive cooling system. The control module controls the rotating speed of the compressor and the opening degree of the electronic expansion valve and adjusts refrigerant flow. The control module controls the rotating speed of each water pump and adjusts the cooling liquid flow; the control module controls the fan and the air blower to adjust the air flow, controls the on-off states of the four-way valves, the three-way valves and the one-way valves and adjusts circulation loops of refrigerants and cooling liquid, and therefore energy coupling between different systems and switching of different working modes are achieved. According to the invention, energy coupling and integrated management among the systems are realized, and the thermal management requirement is met with low energy consumption in multiple scenes.

The invention discloses an energy storage unit, an energy accumulator, an energy storage transmission device and a photovoltaic tracking system, and the energy storage unit comprises an elastic part; an elastic member; the fixing piece is connected with one end of the elastic piece; the driving part is used for being connected with an external load, and the driving part is rotationally matched with the fixing part; the driven piece is connected with the other end of the elastic piece, the driven piece is rotationally matched with the fixed piece, and a switching part is arranged on the driven piece; the first combination part is arranged on the driving part, and the first combination part can be matched with the switching part; the second combination part is arranged on the fixing piece, and the second combination part can be matched with the switching part; in an initial state, the switching part is matched with the first combination part; the conversion part is used for being matched with the second combination part to achieve force storage or energy release of the elastic piece, or the conversion part is matched with the first combination part to achieve deformation of the elastic piece. The device has the advantages of being safe, reliable, high in automation degree, high in practicability, economical and environmentally friendly.

The invention relates to the technical field of data processing, in particular to a PSU pressurization module and a control method thereof, and the PSU pressurization module comprises a data acquisition unit, a dynamic compensation unit, a cooperative control unit, a pressure closed-loop unit and an emergency response unit. The data acquisition unit is used for acquiring an energy accumulator pressure value, an environment temperature value and a braking command signal in real time; the dynamic compensation unit generates a viscosity compensation coefficient through a temperature and viscosity mapping table, and compares the viscosity compensation coefficient with the pressure value to generate a pressure deviation value and a deviation trigger threshold value; the cooperative control unit activates the hydraulic pump based on the pressure deviation value and adjusts the start-stop frequency in combination with the viscosity compensation coefficient; the pressure closed-loop unit adopts double electromagnetic valves to alternately release and supplement oil to inhibit pressure fluctuation; the emergency response unit activates the hydraulic pump and opens the bypass electromagnetic valve to output redundant flow during emergency braking, the technical limitation of an existing hydraulic system in an extreme environment is broken through, and the braking reliability is improved.

The invention relates to a flowing medium packed bed energy storage system which comprises a storage tank for storing flowing media, the storage tank is connected with a flowing medium loop through a stop valve, the flowing medium loop comprises a flowing medium pump, a heater, a heat accumulator module and a heat exchanger which are sequentially connected through a pipeline, and the flowing medium pump provides power for flowing medium circulation; the heat accumulator module is composed of a plurality of heat accumulator units, and each heat accumulator unit is filled with a solid material. In the heat storage mode, the heater heats the flowing medium from the low-temperature state to the high-temperature state, and then the solid materials filled in the heat storage body units are heated through the heat storage body units. In the heat release mode, the flowing medium is heated from a low-temperature state to a high-temperature state after flowing through the high-temperature solid material, and then heat is released to an external system through the heat exchanger. Efficient heat exchange between a flowing medium and a solid material is achieved through the modular solid filling design, so that the heat storage efficiency of the whole system is improved, and the adaptability and flexibility of the system are enhanced.

The invention discloses a water energy accumulator and ground source heat pump combined control method, relates to the technical field of building environment and equipment engineering, accurately captures a time sequence change rule of a building cold load based on the load prediction capability of a time convolution network, overcomes the defect that a traditional method is insufficient in response to sudden fluctuation, and improves the control efficiency. The system can plan an energy storage strategy in advance; an electricity price-load change rate sensitivity index is introduced, and through an adaptive weight adjustment mechanism, economic operation and load tracking requirements are dynamically balanced, so that strategy stiffness caused by fixed priorities is avoided, and the utilization efficiency of time-of-use electricity price signals is remarkably improved; according to the joint optimization design of the mixed integer linear programming model, the equipment operation constraint and the cost target are comprehensively considered, the collaborative decision of the energy accumulator charging and discharging strategy and the heat pump frequency setting is realized, and the direct energy supply dependence in the midday high electricity price period is effectively reduced.

The invention designs a linear heave compensation device based on a double-piston double-rod type energy accumulator, which belongs to the technical field of ocean engineering equipment, adopts the double-piston double-rod type energy accumulator as a coupling device of compensation power, is provided with a plurality of functional cavities, and connects a high-pressure gas cylinder group with a passive compensation gas cavity of the double-piston double-rod type energy accumulator to form a high-pressure gas cylinder group. Therefore, a passive compensation force is provided on the piston rod of the energy accumulator; the two-way variable pump is connected with two active compensation liquid cavities of the energy accumulator, active compensation force capable of controlling the magnitude and the direction is provided on a piston rod of the energy accumulator through a closed variable pump speed control and regulation loop, the passive compensation force and the active compensation force jointly overcome the load of the energy accumulator, and the piston rod of the energy accumulator is driven to move. And finally, the compensation cylinder is indirectly driven to realize a heave compensation function. In addition, the deepwater high-pressure environment pressure acts on the end portions of the energy accumulator load pressure liquid cavity piston rod and the compensation cylinder piston rod at the same time, and the deepwater pressure compensation function is achieved through pressure interaction offset. According to the invention, a plurality of operation modes and functions such as passive compensation, active compensation and water pressure compensation are realized, operation under different working conditions such as overwater, underwater and deepwater areas can be realized, and the device has the characteristics of novel structure, compact system, integration of multiple functions, high compensation precision and the like.

The invention relates to an ocean temperature difference energy power generation efficiency prediction method and device, and belongs to the technical field of ocean energy development and prediction. Through the self-learning capability of the PINN, the relation between network input (energy accumulator pressure, motor rotating speed, current flowing through a load resistor and time) and network output (system efficiency) is established, and the prediction of the ocean temperature difference energy power generation efficiency is realized. According to the method, the PINN model is used for embedding physical constraints, so that the physical reasonability can still be ensured under the condition of insufficient data, transfer learning except conditions used in a small training data set and training is remarkably improved, high-precision rapid prediction can be realized, and the reliability is improved.

The invention provides a double-valve shock absorber and a suspension system.The shock absorber comprises a liquid storage barrel and a piston rod, an energy storage device cavity and a working cylinder are arranged in the liquid storage barrel, the interior of the working cylinder is divided into a recovery cavity and a compression cavity through a piston on the piston rod, and a safety valve is arranged on the piston; a bottom valve is arranged on the working cylinder; a rebuilt valve and a compression valve are arranged outside the liquid storage cylinder, the rebuilt valve comprises a first one-way electromagnetic valve and a rebuilt oil cavity, the rebuilt oil cavity is communicated with a rebuilt cavity, the rebuilt oil cavity is communicated with the energy storage device cavity through the first one-way electromagnetic valve, the compression valve comprises a second one-way electromagnetic valve and a compressed oil cavity, and the compressed oil cavity is communicated with the energy storage device cavity. The compressed oil liquid cavity is communicated with the recovery cavity through a second one-way electromagnetic valve, and the recovery oil liquid cavity is communicated with the compressed oil liquid cavity through conveying equipment. Stepless damping adjustment can be achieved, the wheels can be actively lifted, damping can be adjusted in real time according to different driving conditions when a vehicle is applied, the height of a vehicle body is adjustable, and the driving experience is optimized.

The invention relates to a diaphragm type energy accumulator airtightness detection method and system and a storage medium, and relates to the technical field of energy accumulators, and the method comprises the steps: obtaining the preparation completion triggering information of a diaphragm type energy accumulator; acquiring test plan information of the diaphragm type energy accumulator based on the preparation completion triggering information; according to the test plan information, controlling a preset hydraulic system to perform liquid filling test on the diaphragm type energy accumulator so as to determine pressure detection information; analyzing according to the pressure detection information and the test plan information to determine liquid pressure information of the hydraulic system; judging whether the pressure detection information meets the requirements of liquid pressure information or not; if not, prompting according to preset unqualified prompt information; and if yes, prompting according to preset qualified prompt information. The air tightness detection device has the effect of improving the air tightness detection accuracy of the diaphragm type energy accumulator.

The invention provides an electric overflow valve and a pressure control method thereof.The electric overflow valve comprises a valve body assembly, an energy accumulator and a pressure regulating assembly, a valve cavity allowing a valve element to reciprocate is formed in the valve body assembly, a liquid inlet and a liquid return opening are formed in the valve cavity, and the valve element divides the valve cavity into a first cavity and a second cavity; the valve core reciprocates to realize different opening degrees; an energy storage cavity is formed in the energy accumulator, the pressure adjusting assembly comprises a driving device, a control part and a pressure adjusting part, the driving device is connected with the pressure adjusting part, at least one part of the pressure adjusting part is in threaded connection with the valve body assembly, one end of the pressure adjusting part communicates with the first cavity and is used for changing the pressure in the first cavity, and the control part is in signal connection with the driving device. The control device can control the driving device to move so as to maintain the pressure in the first cavity within a preset range; therefore, the pressure signal is used as an input signal to control the driving device to drive the pressure regulating part to rotate, accurate pressure control is achieved, and remote programmed pressure regulation of the overflow valve is completed.

The invention belongs to the field of energy accumulators, and provides a high-sealing-performance diaphragm type energy accumulator which comprises a lower shell, a middle shell and an upper shell, the middle shell is in threaded connection to the top of the lower shell, the upper shell is in threaded connection to the top of the middle shell, a main diaphragm is installed in the lower shell, and the main diaphragm is in threaded connection to the top of the middle shell. A standby diaphragm is installed in the middle shell, and a partition plate is further installed in the middle shell. The partition plate and the oil hole are arranged between the main diaphragm and the standby diaphragm, the isolation mechanism is used for shielding the oil hole, the standby diaphragm does not work at the beginning of work, hydraulic oil in the main oil cavity can flow into the main air pressure cavity when the main diaphragm reaches the fatigue limit and is damaged, and therefore the isolation mechanism automatically relieves shielding of the oil hole, and the working efficiency is improved. At the moment, the standby diaphragm can replace the main diaphragm to work, so that the service life of the energy accumulator is doubled, and the situation that a hydraulic system generates major accidents is avoided.

When the hydraulic system stops working, a hydraulic pump set stops, a proportional throttle valve is opened to enable an oil inlet pipeline to be communicated with a backflow pipeline, high-pressure oil in a high-pressure energy accumulator set gradually flows to the backflow pipeline through the proportional throttle valve, and the high-pressure oil in the high-pressure energy accumulator set flows to the backflow pipeline through the proportional throttle valve. And when the pressure in the oil inlet pipeline is reduced to the inflation pressure of the high-pressure energy accumulator group, the cartridge valve is opened, so that high-pressure oil in the oil supply pipeline and the hydraulic pump group completely flows back to the oil tank through the cartridge valve. By means of the method and system, stable pressure relief and unloading can be conducted on a high-pressure and ultra-large-flow hydraulic system, huge high-pressure liquid energy accumulated in a high-pressure pipeline and a high-pressure energy accumulator is gradually and stably relieved, impact vibration and noise are effectively reduced, and therefore it is guaranteed that a heavy equipment hydraulic transmission system works stably, reliability is high, and the service life is long.

Vehicle comprising a propulsion system (1) provided with at least one electric machine (2), energy accumulator means (3) and a fuel cell module (4), the at least one electric machine (2), the energy accumulator means (3) and the fuel cell module (4) being electrically connected together, the vehicle further comprising a main tank (6) for storing hydrogen at a first pressure value, the main tank (6) being fluidly connected to the fuel cell module (4) via a first conduit (A), the vehicle further comprising an energy recover system (8) configured to be electrically connected to the electric machine (2) and produce hydrogen for the fuel cell module (4) when the electric machine (2) acts as generator.

The invention discloses a low-pressure cylinder zero-output coupling steam heat accumulator which comprises an intermediate-pressure cylinder connected with a reheating hot section of a steam turbine; the low-pressure cylinder is connected with the output end of the medium-pressure cylinder; a cooling steam source is also connected; the generator is connected with the output end of the medium-pressure cylinder and / or the low-pressure cylinder to generate electric energy; the condenser is connected with the output end of the low-pressure cylinder; the condensate pump is connected with the output end of the condenser and further connected with the output end of the intermediate-pressure cylinder. The steam heat accumulator is connected with the output end of the medium-pressure cylinder; and the regenerative heating mechanism is respectively connected with the output ends of the steam heat accumulator and the intermediate pressure cylinder and is also connected with the input end of the condensate pump. In the deep peak regulation period of the unit, cooling steam enters the low-pressure cylinder, output of the unit can be reduced, part of heat is released through the steam heat accumulator, return water is heated and output through the regenerative heating mechanism, and deep peak regulation and thermoelectric decoupling of the unit are achieved.

The invention discloses a refrigeration house refrigerating system, a defrosting control method and device of the refrigeration house refrigerating system and a storage medium. The system comprises a medium-temperature heat accumulator filled with a first phase change material; the low-temperature heat accumulator is connected with the medium-temperature heat accumulator and is internally filled with a second phase-change material of which the phase-change temperature is lower than that of the first phase-change material; an air cooler; the evaporator is respectively connected with the air cooler and the low-temperature heat accumulator through a throttle valve; the defrosting heater abuts against the surface of the evaporator and is connected with the medium-temperature heat accumulator and the low-temperature heat accumulator; one end of the compressor is connected with a heat exchange pipeline of the medium-temperature heat accumulator and the air cooler through a three-way reversing valve, the other end of the compressor is connected with the evaporator, and the low-temperature heat accumulator, the medium-temperature heat accumulator, the solution pump and the defrosting heater sequentially form a loop. By means of the two heat accumulators made of the phase change materials with different phase change temperatures, wide-temperature-range exhaust waste heat of the compressor is absorbed, meanwhile, the evaporator is defrosted in a graded mode through the two stages of heat accumulators, and the energy consumption of the system is reduced.

The invention relates to an ocean temperature difference energy driven buoy autonomous power generation hydraulic system and a working method thereof, and belongs to the technical field of hydraulic systems. The power generation hydraulic system comprises a rubber leather bag, an energy accumulator, a pilot control valve bank, a turbine shaft assembly, a power generator, an oil tank, an upper pressure-resistant shell, a lower pressure-resistant shell and an integrated end cover, the upper pressure-resistant shell and the lower pressure-resistant shell are connected in a sealed mode through the integrated end cover, and the pilot control valve bank, the turbine shaft assembly and the oil tank are arranged on the upper side of the integrated end cover; the turbine shaft assembly is connected with a generator, a rubber bag is arranged on the lower side of the integrated end cover, an energy accumulator is arranged in the rubber bag, the space between the energy accumulator and the rubber bag is filled with hydraulic oil, and the space between the rubber bag and the lower pressure-resistant shell is filled with a phase change working medium. The pilot control valve group is designed, the opening pressure is set by an external mechanical spring, an oil way is automatically conducted after the opening pressure is reached, the energy loss between an oil inlet and an oil outlet is extremely small, and the advantages of no electric energy consumption and low failure rate are achieved.

The utility model discloses a suspension system and a vehicle, the suspension system comprises: a shock absorber, the shock absorber comprises a sleeve and a piston, the piston is movably installed in the sleeve to divide a first cavity and a second cavity, and the piston is connected with a piston rod penetrating through the first cavity; the driving pump is connected with the first cavity through a first flow path, the driving pump is connected with the second cavity through a second flow path, and the driving pump is constructed to be capable of switching the flow direction of the liquid medium between the first cavity and the second cavity; the energy accumulator module comprises a first energy storage cavity with variable volume, an air cavity and a second energy storage cavity, the volume of the air cavity is variable due to the variable volume of the first energy storage cavity and / or the second energy storage cavity, an inlet and an outlet of the first energy storage cavity are connected with the first flow path, and an inlet and an outlet of the second energy storage cavity are connected with the second flow path. Therefore, the suspension system can be conveniently switched among different modes, the multiple modes do not influence one another, and the reliability of the suspension system can be improved.

A device for driving a closure component (9) in a building from a solar energy source (1), comprising at least one low-voltage alternating current electric motor (3) mechanically coupled to the closure component, a direct current electrical energy accumulator element (2), a solar energy source delivering a direct voltage. The electrical energy accumulator element has a nominal voltage lower than said effective electric voltage and greater than the direct voltage delivered by the solar energy source. A DC-DC charger (4) converts the output electrical energy from the solar energy source into electrical energy with an electric voltage for charging the electrical energy accumulator element. A DC-AC converter (5) converts the electrical energy with a direct output voltage of the electrical energy accumulator element into electrical energy with an alternating voltage that is able to power said electric motor.

The invention discloses an integrated parking heater heat management system, which belongs to the technical field of heater heat management and is provided with a parking heater combustion loop, a tail gas waste heat recovery loop, a cooling heat energy recovery loop, a heat accumulator loop and other heat source loops, and oil inlet and fan air inlet are adjusted in real time according to multi-block temperature and preset temperature. Fuel loss is effectively reduced while operation is intelligent, various heat sources such as a heat storage loop, a parking heater combustion loop, a tail gas waste heat recovery loop and a cooling heat energy recovery loop can be integrated, comprehensive recycling and efficient distribution of heat energy are achieved, the operation cost is reduced, and the heat energy utilization rate is increased.

The invention discloses a hydraulic control system for a sliding gate of a tundish of a continuous casting machine, which relates to the technical field of hydraulic control systems and comprises an energy accumulator safety system and two oil cylinder control systems which are connected in parallel between an oil inlet main path and an oil return main path, the oil inlet main path is connected with an oil pump through a one-way valve; the energy accumulator safety system comprises an energy accumulator, a normally-open type high-pressure ball valve and an energy accumulator safety valve. The oil cylinder control oil way comprises a two-position four-way electromagnetic directional valve, a stacked type double-one-way throttle valve, a stacked type hydraulic control one-way valve, a first normally-closed type two-position two-way electromagnetic directional valve, a second normally-closed type two-position two-way electromagnetic directional valve and an oil cylinder. The hydraulic cylinder of the sliding nozzle can be stably controlled, and the energy accumulator safety system is arranged, so that the sliding nozzle can still be opened and closed for two to three times when an oil pump pauses in a sudden power failure state, and molten steel is prevented from being cooled and solidified.

The invention provides a liquid-liquid compressed carbon dioxide energy storage system for recovering waste heat of a data center. The liquid-liquid compressed carbon dioxide energy storage system comprises a carbon dioxide liquid storage tank, an energy storage assembly, an energy release assembly and a data center cooling circulation loop. In the electric power valley period, low-pressure liquid carbon dioxide cold energy is recycled through the phase change cold accumulator, surplus electric power is consumed through the two-stage compressor, and high-pressure gas heat # imgabs0 # is recycled through the two-stage intercooler to provide energy for the energy release process; in the power peak period, the phase change heat accumulator is matched with heat capacity, waste heat of a data center is recycled, high-pressure liquid carbon dioxide is preheated, heat exchange of a reheater is optimized, # imgabs 1 # efficiency is improved, and meanwhile part of turbine exhaust waste heat is recycled for gas preheating in the energy storage process. Waste heat can be recovered while the cooling requirement of the data center is met, the energy loss of the data center is reduced, and meanwhile the energy storage efficiency of the system is improved.

A charging device (1) for charging the battery of a portable electronic device (4) by wireless inductive energy transfer is described. The charging device (1) has a contact surface (6) for placing the electronic device (4) on it during the charging process and charging electronics (36, 47) configured to emit alternating magnetic fields through the contact surface (6) for inductive energy transfer to the electronic device (4). The charging device (1) comprises a basic unit (2) with a base housing (2') and at least two interchangeable adapter modules (3a, 3b), wherein the adapter modules (3a, 3b) are configured differently from one another to perform an inductive charging process, each determined by the type of adapter module (3a, 3b).The base housing (2') of the basic unit (2) and the adapter modules (3a, 3b) have a connection interface (5) for electrical and mechanical connection of the basic unit (2) optionally with one of the adapter modules (3a, 3b).