476 results about "Heat engine" patented technology

The invention relates to the technical field of bearing detection, and particularly discloses a deep groove ball bearing clearance assembly error detection method and system.The method comprises the steps that dynamic parameters of a deep groove ball bearing in each assembly stage in the assembly process under preset assembly parameters are obtained, and the dynamic parameters comprise vibration spectrum data, temperature distribution data and shaft diameter displacement; obtaining a dynamic clearance error value according to the plurality of continuous dynamic parameters; and obtaining stress gradient distribution data at a plurality of time nodes in each assembly stage according to the dynamic clearance error value. The deep groove ball bearing assembly quality evaluation and analysis method has remarkable beneficial effects in the aspects of deep groove ball bearing assembly quality evaluation and analysis. Through a series of closely associated steps, the actual state of the bearing is comprehensively and accurately reflected by comprehensively considering multiple parameters to accurately calculate local stress and judge the stress area from accurate judgment of a thermal-mechanical coupling stress area, obtaining of an external dynamic deformation comprehensive index and calculation of a total assembly error value and a clearance comprehensive evaluation index.

The invention provides a rotary table bearing-torque motor thermal vibration coupling modeling method, and relates to the technical field of machine tool reliability analysis. Comprising the steps of calculating bearing restoring force, torque and elastic rigidity; giving a dynamic balance equation of the main shaft system; unbalanced magnetic pulling force and unbalanced mass excitation are calculated; a displacement field is solved, and load changes caused by the displacement field are transmitted to the thermal model; the contact force borne by the bearing is updated by considering the load effect related to displacement, and the friction heat generation of the bearing and the heat generation of each part of the motor are calculated; calculating thermal deformation and thermal displacement of the bearing; thermal resistance among nodes is calculated, and a temperature field equilibrium equation is given through a thermal resistance network to achieve rapid thermal-mechanical coupling analysis; the thermal equilibrium equation is solved to calculate temperature response; importing the latest temperature into the kinetic model; lubricating grease viscosity and bearing thermal deformation are updated; and repeating the steps to finally obtain the main shaft displacement field and temperature field response. The method is high in accuracy, high in universality, low in test cost and high in test efficiency.

The invention provides a spindle constant-temperature AI closed-loop heat engine system, and relates to the technical field of numerical control machine tool control and heat management. The invention aims to solve the problems of response lag, uncontrollable thermal stress, single heating strategy and the like of the traditional spindle heat engine method. The system comprises a multi-dimensional thermal state sensing module used for constructing a multi-node discrete temperature field representing the overall thermal distribution of the main shaft; the real-time heat balance feedback module is used for judging the cold / hot starting state of the main shaft according to the initial temperature difference and executing a differentiated feedback control strategy; and an AI prediction forward compensation module that predicts a future cutting thermal load by pre-reading a machining instruction and generates a feedforward thermal compensation instruction. According to the method, the thermal stress is controlled by introducing the radial thermal gradient index as the safety constraint, negative precooling or positive preheating is achieved in combination with the AI predictive capacity, a feedback and feedforward composite control mode is formed, and the dynamic thermal stability and the machining precision of the main shaft under the complex working condition are improved.

A method for controlling a hybrid power plant of a vehicle provided with a heat engine and at least one electrical unit comprising an electric machine, an electrical energy source, and a power management unit, the heat engine and the at least one electric machine being mechanically connected to input shafts of a gearbox. After acquiring parameters of the at least one electrical unit, and receiving a mechanical power requirement of the vehicle, a usable electrical power that can be used by the electrical unit and at least one operating setpoint of the electrical unit are determined as a function of the parameters and the mechanical power requirement. Finally, the heat engine and the electrical unit are controlled as a function of the at least one operating setpoint in order to meet the mechanical power requirement.

The application discloses a brake interface wear and fatigue crack prediction method based on complete thermal-mechanical coupling, comprising the following steps: S1, establishing a finite element model, and discretizing total analysis time into multiple time periods; S2, starting finite element analysis, and calculating interface node contact pressure and node slip rate; S3, performing transient thermal-mechanical coupling analysis; S4, calculating node wear depth and wear direction, and updating grid information by using ALE technology; S5, judging whether the interface contact state is stable convergence; S6, ending analysis, unloading brake load, and obtaining brake disc residual stress; and S7, presetting a crack at the maximum residual stress, simulating crack propagation behavior, calculating stress intensity factor and brake disc fatigue life. The application can simulate tribological behaviors such as contact stress, temperature and wear, and realizes brake disc fatigue life prediction by taking residual stress after the thermal-mechanical coupling process as load input.

The present disclosure provides a solution for a system and a method for converting heat into work. The solution makes use of a nozzle, in which pressurized heat transfer liquid (HTL) and a Liquid-Vapor-Phase-Changing (LVPhC) working fluid is about the same pressure are mixed to form a LVPhC-HTL mixture, which in turn undergoes evaporation and isothermal or quasi-isothermal expansion while flowing in the nozzle that results in acceleration of the mixture. The accelerated mixture is ejected from to thereby rotate a turbine and produce work from the generated kinetic energy. The LVPhC is separated from the mixture and condensed after its ejection from the nozzle and its pressure is elevated back to the working pressure in the nozzle. The present solution exploits the thermodynamic advantages of each phase of the LVPhC.

The invention discloses a tail gas centralized treatment device and method in coconut shell activated carbon production, and relates to the technical field of tail gas treatment.The tail gas centralized treatment device in coconut shell activated carbon production comprises a base, a carbonizing machine is fixedly installed at the top of the base, and a heat exchange machine is fixedly installed at the top of the base; the tail gas centralized treatment device comprises a base, a heat exchanger is fixedly mounted at the top of the base, a gas conveying pipe fixedly penetrates through the bottom of the heat exchanger, a treatment barrel is fixedly mounted at the top of the base, and a cyclone separator is fixedly mounted at the top of the treatment barrel. At the moment, the cyclone separator is started and separates out large-particle impurities in the tail gas, so that equipment is prevented from being blocked and abraded, the service life is prolonged, the load on equipment parts can be reduced, the overall purification efficiency is improved, subsequent treatment is facilitated, and the situation that the large-particle impurities wrap reactants to affect the solid-liquid separation efficiency is avoided.

The invention relates to a variable-power scale-free boiler and topology heat transfer quasi-super Stirling ecological heat engine technology, in particular to a working principle of direct-current scale-free super heat exchange high power density reaching 8-16 times fuel oil stress application variable power in the ZL2012105664497.4 patent achievement innovation field of the inventor, and the working principle is applied to normal low pressure, middle high pressure, critical pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure and high pressure. Various types of boilers are free of scale obstruction, super in heat exchange, high in power density, ultra-low in cost rate, and safe in multi-module unit combination of less than 30-90L; a boiler heat exchange heat output'boiler 'system formed by connecting ten to hundreds of congruent module (tube panel) units in parallel is integrally matched with a magnesium catalysis water-based combustion-supporting combustion science'boiler' system of a '8-16 times fuel oil stress application 'Stirling'heat engine', and meanwhile, a new era of human cosmic rock planet carbon dioxide and carbon rock particle energy ecological metallurgy is created. The invention relates to a Stirling ecological heat engine, in particular to a variable-power scale-free multi-module once-through boiler and a topology heat transfer Stirling ecological heat engine, wherein the variable-power scale-free multi-module once-through boiler and the topology heat transfer Stirling ecological heat engine are used for gathering metamorphosis heat radiation and a three-guide interlining heat transfer and exchange body heat output system under the constraint of extreme-effect

The invention provides a double-rotor direct-drive coaxial reverse-propeller electric ducted fan, which is characterized in that a single motor with an inner rotor and an outer rotor directly drives two pairs of blades, an intermediate transmission device and an inner rotor excitation group to generate a rotating magnetic field, and a first-stage propulsion component and a second-stage propulsion component with the same rotational inertia are driven under the action of electromagnetic torque with the same acting force and counter-acting force; one-way rotation deflection torque is balanced, and coaxial reverse propeller movement is achieved; the rectification duct reduces the induced resistance of the blades and improves the propulsive efficiency, the convergence and expansion guide sleeve and the motor frame body dissipate heat to form circulating heat dissipation of the Brayton heat engine, meanwhile, air is heated, expanded and ejected out to generate thrust, the efficiency is high, and the thrust is large. The dual-rotor motor direct-driven coaxial reverse propeller ducted fan propulsion unit is simple in mechanism, light in structure, large in power-to-weight ratio, high in reliability, beneficial to use in a narrow space and vertical take-off and landing, especially suitable for an EVTOL (electric vertical take-off and landing aircraft), and capable of promoting popularization of small aircrafts and vertical take-off and landing urban transportation carriers.

The invention relates to a motor vehicle comprising a heat engine, an exhaust line, and a thermal protection system which comprises: - a means for evaluating the temperature of the exhaust line (M1); - a means for evaluating temperature criticality (M2) between a low level 1 without risk of degradation of the components of the exhaust line; an intermediate level 2; and a high level 3 with said risk; - a means for cooling (M3) the heat engine above level 2 so as not to degrade the performance of the heat engine; and - a limiting means (M4) limiting the heat engine above level 3, by limiting the torque of the heat engine in the event of overheating of the exhaust line. The invention also relates to a method and a program based on such a vehicle. Figure 1

The invention provides a clutch pressure plate thermal deformation simulation method, system and device and a medium, and belongs to the technical field of automobile clutches. A three-dimensional model of a dry diaphragm spring clutch is obtained, and a clutch heat engine coupling deformation finite element model is established; setting a constraint set point at a preset position; calculating the density of heat flow applied to the friction surface of the pressure plate; respectively calculating a pressure plate temperature field simulation result and a pressure plate thermal mechanical coupling deformation simulation result; outputting a calculation result as a simulation result file; and configuring the thermomechanical coupling deformation simulation result of the pressure plate to the temperature distribution cloud chart of the pressure plate, respectively extracting and analyzing the axial displacement of the inner side and the outer side of the friction surface of the pressure plate, and calculating to obtain the thermomechanical coupling deformation of the pressure plate. According to the method, multiple aspects such as heat flow density application, heat conduction, mechanical load application and heat engine coupling are comprehensively considered, the actual working condition of the clutch can be reflected, and the design and optimization requirements of the clutch are met.

A closed working fluid type heat engine (100) for power generation in the environment of a nuclear fusion power system (200). The heat engine includes a primary heat exchanger (102) connected to a primary heat source (106) and a secondary heat exchanger (108) connected to a secondary heat source (110). The secondary heat source is thermally independent of the primary heat source, and the temperature of the primary heat source is higher than that of the secondary heat source. The heat engine also includes a main turbine (104) and an auxiliary turbine (116). The turbines are arranged in fluid parallel, and a parallel shunt point is arranged between the primary heat exchanger and the secondary heat exchanger. The main turbine receives the working fluid heated by the secondary heat exchanger and the main heat exchanger, and the auxiliary turbine receives the working fluid heated by the secondary heat exchanger. The heat engine also includes a first regenerator (124) configured to thermally connect working fluid flowing out of the main turbine with working fluid flowing into the main heat exchanger. Suitable nuclear fusion power systems and methods of operation thereof are also described.

The present application relates to a flue gas low-heat recovery system based on reverse Brayton cycle heat pump energy storage and a control method thereof, and belongs to the technical field of heat pump energy storage peak shaving of heat engine units. The system comprises a boiler module, a high-heat cycle module and a low-heat cycle module, and realizes the hierarchical utilization of high-grade and low-grade flue gas low-heat through collaborative operation. The flue gas of the boiler module is coupled with the high-heat cycle module through a molten salt heat exchanger, and the low-heat cycle module utilizes the low-heat of the flue gas to generate power through an organic Rankine cycle. The high-heat cycle module stores electric energy and thermal energy during off-peak hours and releases energy during peak hours, thereby improving the peak shaving capacity of the system. The present application realizes the deep integration of efficient recovery of flue gas low-heat and energy storage technology, significantly improves the energy utilization efficiency, system flexibility and economy, and has environmental protection and sustainable development benefits.

The invention discloses an air cooling machine power enhancement potential quantitative estimation method, and belongs to the technical field of engine power estimation. The air cooling machine power strengthening potential quantitative estimation method comprises the steps that air cooling machine performance parameters, a heat engine state reverse dragging cylinder pressure curve and a heat release rate curve are obtained; a one-dimensional simulation model of the air cooler is established, and thermodynamic cycle gas state parameters of the air cooler are obtained; establishing a three-dimensional combustion simulation model, and calculating the thermodynamic state of gas in a combustion chamber in a compression stage after an intake valve is closed; establishing a three-dimensional structure simulation model of the air cooling machine cylinder part; the three-dimensional combustion simulation model is adopted for oil gas chamber optimization, heat-mechanical load verification is carried out on all parts, and the optimized heat release rate is obtained; and inputting the optimized heat release rate into a one-dimensional simulation model, and quantitatively calculating the power strengthening potential of the air cooling machine. According to the quantitative estimation method for the power strengthening potential of the air cooling machine, the power strengthening potential of the air cooling machine is quantitatively estimated through the digital simulation technology, and the strengthening design efficiency is improved.

The hybrid aircraft power plant can have an output shaft connectable to a load, the output shaft rotatable about an axis; a thermal engine having a thermal engine shaft coaxial with the output shaft; an electric motor having a rotor shaft coaxial with the output shaft; a first clutch operable to engage the thermal engine shaft with the output shaft; a second clutch operable to engage the rotor shaft with the output shaft; a third clutch operable to engage the thermal engine shaft with the rotor shaft; the first clutch, second clutch and third clutch disposed axially between the electric motor and the thermal engine, relative to the axis.

The invention discloses a starting method, device and equipment of a fuel cell engine and a storage medium. The starting method comprises the steps that when the fuel cell engine is in a cold engine starting state with the environment temperature larger than 0 DEG C, the fuel cell engine is controlled to execute a heat engine mode; when the pile cooling liquid outlet temperature reaches a first target temperature, obtaining an intercooler cooling liquid inlet temperature and an intercooler cooling liquid outlet temperature; and when the temperature of the intercooler cooling liquid inlet is lower than the temperature of the intercooler cooling liquid outlet, the fuel cell engine is controlled to enter a load pulling mode. According to the technical scheme, it is ensured that the temperature condition of the fuel cell engine rapidly reaches the target value before rapid load pulling, the fault that the fuel cell engine directly enters the load pulling mode and liquid water forms pile flooding due to current increase is avoided, rapid engine heating is achieved, and meanwhile normal work of the fuel cell engine is ensured.

The present invention provides a heat engine operating on a novel closed thermodynamic cycle. The primary characteristics of the heat engine comprise a boiler, condenser, liquid pump, and a regenerative expander in which heat is recovered from the expansion / work extraction process to be returned to the sensible heat addition process that occurs between the condenser outlet and the boiler inlet. The regenerative expander may be comprised of a novel turbine design described as part of the present invention. The primary characteristic of the turbine being a rotor consisting of a hub intersected by a plurality of narrow helical channels through which motive fluid is directed by a plurality of nozzles to induce rotation in the same direction as the helical path of the channels. The liquid pump of the heat engine may also be comprised of a novel design based on similar working principles to the above turbine.

The invention provides a turbojet engine starting control method and system based on artificial intelligence. The method comprises the steps that the oil way pressure of an ignition oil way of an engine, the environment temperature of the environment where the engine is located and the internal temperature of the engine are obtained; under the condition that the oil way pressure meets a preset condition and the environment temperature is smaller than or equal to a first temperature threshold value, an igniter is controlled to be started, a gunpowder starter is controlled to be started at a first time point, and the first time point is a time point which is delayed by a preset duration of the time point for controlling the igniter to be started; and under the condition that the oil way pressure meets the preset condition and the environment temperature is larger than a first temperature threshold value, or the oil way pressure meets the preset condition and the internal temperature is larger than a second temperature threshold value, the igniter and the gunpowder starter are controlled to be started at the same time. According to the self-adaptive control method, the starting reliability of the turbojet engine in the low-temperature environment is effectively enhanced, and meanwhile the requirement for quick starting in the normal-temperature or heat engine state is met.

The invention discloses an engine oil temperature control lubricating system for a hybrid electric vehicle, and belongs to the field of engine lubricating systems. Comprising a main oil duct, an engine oil pan, an engine oil pump and an oil duct pipe set, the engine oil pan is used for storing engine oil, the engine oil pump is used for pumping the engine oil in the engine oil pan, and the oil duct pipe set communicates with the engine oil pump and the main oil duct and comprises a first oil duct and a second oil duct which are arranged in parallel; the heater is opened to heat engine oil flowing through the first oil duct when the engine oil temperature is lower than a second preset temperature, and is closed when the engine oil temperature is higher than or equal to the second preset temperature; and the second oil duct comprises a second temperature control valve, and the second temperature control valve is opened when the temperature of the engine oil is larger than or equal to the second preset temperature, so that the engine oil further flows into the main oil duct through the second oil duct. When the engine of the hybrid electric vehicle is in cold start, the temperature of the engine oil can be rapidly increased through the heating piece, so that abnormal sound and abrasion of the engine when the temperature of the engine oil is too low can be well improved.

A method of reducing noise includes: driving a first propulsor using one or more of the first electrical motor and the first thermal engine, and driving a second propulsor of the second hybrid power plant using one or more of the second electrical motor and the second thermal engine; receiving a signal indicative of an initial combined noise signature; determining, from the signal, that an initial amplitude variation of a periodically fluctuating amplitude of the initial combined noise signature is greater than an amplitude variation threshold; modulating a thrust produced by the second hybrid power plant, by changing a power output of the second thermal engine or the second electrical motor, to produce a modulated combined noise signature having a modulated amplitude variation less than the initial amplitude variation; and compensating for a difference in thrusts generated by the first hybrid power plant and the second hybrid power plant.

The utility model relates to an energy-saving and environment-friendly screw type steam compressor testing device, which comprises an air suction filter, an exhaust separator, a heat recoverer, a lubricating oil tank, a softened water tank and a softened water treatment device, an air suction silencer and an air exhaust silencer are respectively arranged on the compressor air exhaust pipe and the compressor air inlet pipe; the compressor air inlet pipe is connected with the exhaust separator through a circulating water spraying pipeline; the heat recoverer is connected with the softened water tank through a condensate pipe and a balance pipe, the softened water treatment device is connected with the softened water tank, and the softened water tank supplements water to the screw type steam compressor to be tested through a softened water supplementing pipe. The steam generation speed of the air dynamic heat engine is increased through the circulating water spraying pipeline, the dynamic heat engine time is short, and meanwhile the power consumption of the driving motor is reduced; the noise reduction effect is good, the noise reduction cost is greatly reduced, and meanwhile, the field working environment of the test device is greatly improved; through the condensation phase change white smoke elimination technology of the heat recoverer, the heat in the steam can be completely recycled.

The invention provides a supercritical carbon dioxide heat storage system heat exchange network optimization method and device based on pinch point optimization, and the method specifically comprises the following steps: calculating the temperature and flow of a heat storage material corresponding to a heat exchange pinch point according to the working medium flow of a first heat exchanger and the working medium temperature of the assumed heat exchange pinch point; the temperature of inlet and outlet heat storage materials of the first heat exchanger is obtained; determining the working medium outlet temperature of the second heat exchanger by using the first heat exchanger outlet heat storage material temperature and the minimum heat exchange temperature difference; according to the working medium outlet temperature and pressure of the second heat exchanger and heat engine circulation parameters, the working medium inlet and outlet temperature of the third heat exchanger is determined, and the heat storage material temperature, flow and inlet and outlet temperature corresponding to the heat exchange pinch point are calculated; and when the temperatures of the working medium in the fourth heat exchanger and the heat storage material at the outlet of the third heat exchanger meet the minimum temperature difference limit, calculating the round-trip efficiency of the heat storage system at the assumed heat exchange pinch point working medium temperatures of the first and third heat exchangers, and selecting the optimal temperature to complete heat exchange network optimization, thereby improving the heat exchange efficiency of the system.

The invention relates to the technical field of cable production and manufacturing and automation control, in particular to an energy-saving cable extrusion production process control system, which comprises a data acquisition module for acquiring real-time working condition parameters of an extrusion production line; the rheological thermal coupling analysis module is used for resolving the shear heat contribution rate under the current working condition; the heat engine response decoupling module is used for determining a heat engine response lag time difference between mechanical shear heat and machine barrel heat conduction; the energy efficiency optimization calculation module is configured to generate a dynamic heat balance control strategy aiming at an unsteady state working condition according to the heat engine response lag time difference and a preset unit output ratio energy consumption target; the self-adaptive execution module is configured to output a cooperative control instruction for a heating and cooling system and a screw driving system based on the dynamic heat balance control strategy so as to realize minimization of system energy consumption; according to the method, the common energy confrontation phenomenon of alternate operation of heating and cooling in traditional control is solved, and the energy consumption in the transition process is greatly reduced.

An aircraft propulsion system includes a hybrid-electric power plant for delivering power to an air mover for propelling an aircraft. The hybrid-electric power plant includes a heat engine operatively connected to a first air mover, and an electric motor operatively connected to a second air mover. The second air mover is positioned on a wing of the aircraft outboard from the heat engine. A method for reducing trailing vortices includes powering a first air mover of an aircraft with a heat engine during a take-off stage, a climb stage, a cruise-stage and / or a descent stage. The method includes powering a second air mover of the aircraft with an electrical motor during the take-off stage and / or the climb stage. The method includes freewheeling the second air mover during the cruise stage and / or the descent stage to generate mechanical energy and reduce wing tip vortices.

The invention discloses a numerical control gear hobbing machine tooth thickness compensation method and device and a numerical control gear hobbing machine. The numerical control gear hobbing machine tooth thickness compensation method comprises the following steps that the first angle variable quantity of an encoder and the common normal variable quantity of a test workpiece which are determined and obtained through a test are obtained; calculating the radius according to the first angle variable quantity and the common normal variable quantity of the test workpiece; in response to a received heat engine cutting instruction, acquiring an angle value of the encoder when the machine tool is at a zero position, an X coordinate value of the machine tool in a heat engine state and an angle value of the encoder at the position, and calculating to obtain a second variable quantity of the encoder on an X axis in the heat engine state; according to the second variable quantity, the Z-axis coordinate of the tooth width center of the workpiece to be machined and the Z-axis coordinate of the gear rack meshing point, a cutting compensation value is obtained through calculation; and compensating the X axis of the cutter according to the cutting compensation. The cutting compensation amount can be calculated, the compensation precision is high, and time and labor are saved.

A method of regenerating an electric power storage unit for an aircraft hybrid electric propulsion (HEP) system is provided. The HEP system includes a thermal engine, an electric motor, an electric power storage unit, a primary gearbox, and a propulsion unit. The electric motor is configured to selectively provide rotational drive to the propulsion unit. The method includes: controlling the electric motor to operate as the generator; controlling the primary gearbox to be in an output disengaged configuration, wherein in the output disengaged configuration the primary gearbox is disengaged from driving the propulsion unit and the primary gearbox is transfers rotational drive produced by the thermal engine to the electric motor; operating the thermal engine to drive the primary gearbox in the output disengaged configuration; and regenerating the electric power storage unit by providing electrical energy produced by the electric motor to the electric power storage unit.

The invention discloses a spheroidizing-annealing-free SWRCH35K cold heading steel wire rod based on hot machine rolling and a production method of the spheroidizing-annealing-free SWRCH35K cold heading steel wire rod. The cold heading steel wire rod comprises the chemical components of C, Si, Mn, P, S, Als, Cr, Ni, Cu, Mo, V and the balance Fe and inevitable impurities. The production method comprises the steps of 130-ton combined blown converter smelting, LF furnace refining, continuous casting, casting blank heating, heat engine rolling, reducing first and second unit rolling, spinning, air cooling line rolling, finishing and packaging and warehousing. The plastic extension strength Rp0.2 of the produced cold heading steel wire rod is 356-408 MPa, the tensile strength is 546-583 MPa, the percentage elongation after fracture is 26-31%, the percentage reduction of area is 62-73%, no complete decarburization layer exists, the total decarburization layer depth is 0.02-0.04 mm, the cold heading steel wire rod has good drawing machining performance and good surface quality, the obtained wire rod structure is spheroidized ferrite and pearlite structures, and the cold heading steel wire rod is suitable for being used as a cold heading steel wire rod. And the heat treatment procedure of subsequent spheroidizing annealing of a traditional cold heading steel wire rod is omitted, the production cost of subsequent machining is greatly saved, and the market competitiveness of products is improved.

The invention belongs to the technical field of blast furnace decarburization systems, and particularly discloses a hydrogen-rich carbon circulating blast furnace top gas carbon dioxide capture solution vacuum phase change regeneration system which comprises an absorption tower, a flash tank and a regeneration tower, the bottom and the top of the absorption tower are communicated with a top gas pipe and an ammonia liquid inlet pipe respectively, and a decarburized gas outlet pipe is arranged at the top of the absorption tower; a bottom outlet of the flash tank is communicated with a regeneration tower through a pipeline; a bottom outlet of the regeneration tower is communicated with an evaporator; one side of the evaporator is communicated with a vacuum pipe; one end of the vacuum pipe is communicated with a vacuum phase change direct heating machine; and a cooling unit for cooling the vacuum tube is arranged outside the vacuum tube. The problems that a traditional amine liquid regeneration method is low in regeneration efficiency and high in energy consumption are solved. By combining vacuum flash evaporation, the regeneration efficiency of the amine liquid is remarkably improved, meanwhile, energy consumption and amine liquid loss are reduced, and the purpose of low-carbon metallurgy is achieved.

There is disclosed a method of controlling a helicopter (1) comprising: at least one thermal engine (11); at least one rotor (3), which is operatively connectable to thermal engine (11) to be drive, in use, at a set rotational speed (ωSET); an emergency system (40) comprising: at least one electric motor (41), which is operatively connectable to rotor (3) and an electrical power source (42), which is electrically connected to electric motor (41); the method comprises the steps of i) operatively connecting thermal engine (11) to rotor (3) and keeping electric motor (41) disconnected by rotor (3) or idle, in a normal operating condition of thermal engine (11); ii) detecting if thermal engine (11) is in at least partial failure condition; iii) accelerating electric motor (41) up to when said current rotational speed (ω) equals set value (ωSET), in case of at least partial failure of said thermal engine (11); step iii) comprises the steps of iv) sensing a plurality of parameters (ω, ωERR, ϕ, ϕERR, IIT, ττ / S, τMGB, Powerτ / S, PowerMGB) of thermal engine (11) and rotor (3); and v) identifying an at least partial failure of thermal engine (11), on the basis of parameters (ω, ωERR, ϕ, ϕERR, IIT, τ, P.

The utility model discloses a Stirling heat engine teaching aid based on an auxiliary magnetic suspension system and a U-shaped liquid column, which comprises a support table, a glass U-shaped tube and a quartz tube, a high-frequency induction heater is arranged on the upper side of the support table, a heating induction coil of the high-frequency induction heater is sleeved on the quartz tube, the quartz tube is horizontally arranged, and the glass U-shaped tube is arranged on the quartz tube. A first sealing plug and a second sealing plug are respectively plugged at the two ends of the quartz tube, heat preservation steel wool is arranged at one section, close to the first sealing plug, of the interior of the quartz tube, and a heating iron ring is arranged in the center of the interior of the quartz tube and is positioned in a heating induction coil of the high-frequency induction heater. According to the utility model, through the design of the auxiliary magnetic suspension system and the U-shaped liquid column, the friction between the piston and the pipe wall is greatly reduced, the energy loss in the mechanical energy conversion process is effectively reduced, and the working principle of the Stirling heat engine and the application of the second law of thermodynamics can be intuitively displayed.