648 results about "Gas heating" patented technology

The invention discloses an analogue simulation system for operation of a ground source heat pump and a gas boiler in a severe cold area. The analogue simulation system comprises a heat supply correction model building module, a ground source / gas heat supply estimation module, a heat supply dispatching distribution module and a correction model optimization module. According to historical operation data of a ground source heat pump subsystem, heat supply correction models associated with soil geology and environmental climate are constructed based on a single variable principle, a heat supply amount estimated value of the ground source heat pump subsystem is dynamically corrected, heat supply amount of a gas boiler subsystem and heat load required by a building group are estimated, heat supply output of the two subsystems is intelligently distributed, and heat supply efficiency is improved. And the heat supply amount correction model is optimized through the actual heat supply amount deviation. The method can effectively overcome the problem of ground source heat pump heat supply amount deviation caused by soil heat unbalance and climate fluctuation in a severe cold area, further improves the energy efficiency estimation precision of a heat supply system, facilitates optimization of a scheduling strategy, has dynamic compensation and model self-evolution capabilities, and can adapt to complex environmental changes.

The invention discloses cooking equipment and a control method and a control device thereof, and relates to the technical field of kitchen appliances, the cooking equipment comprises a first shell, a heating assembly, a first fan and a humidifying assembly, the first shell comprises a cooking cavity; the heating assembly is configured to generate hot air flow through gas heating. The first fan is configured to drive the hot air flow to enter the cooking cavity; the humidifying assembly is used for adjusting the humidity of the hot air flow before entering the cooking cavity. The control method comprises the steps that a heating assembly and a first draught fan are controlled to operate, so that hot air flow is introduced into a cooking cavity; if it is determined that the cooking equipment operates in the wet baking mode, after the heating assembly and the first draught fan operate, the humidifying assembly is adjusted according to the baking information so as to control the humidity in the cooking cavity. According to the cooking equipment provided by the embodiment of the invention, the heating assembly and the humidifying assembly are arranged, and the humidifying assembly adjusts the humidity of the hot air flow before the hot air flow enters the cooking cavity, so that the humidity in the cooking cavity is adjustable.

The invention discloses a device and method for improving the laser welding quality of a large cylindrical battery tab, belongs to the technical field of new energy automobile battery welding, and aims to solve the problems of low material absorption rate, poor welding protection effect and the like in the prior art. The device comprises a fastening pressing block, the fastening pressing block fixes a battery cell and a collector plate, the fastening pressing block is provided with an internal gas passage, a blowing nozzle of the fastening pressing block is sequentially connected with a plasma activator, a gas heating device, a gas flow controller and a protective gas cylinder, and an exhaust nozzle of the fastening pressing block is connected with an exhaust device. Nitrogen blown out through the blowing nozzle sweeps over the surface of a to-be-welded area of the collector plate, a protective air curtain is formed in the to-be-welded area, the plasma activator conducts ionization activation on the nitrogen, formed nitrogen free radicals and the to-be-welded surface form a nitride layer in a chemical mode, and the laser absorption rate of the material can be remarkably improved. The reaction between the preheated workpiece surface and nitrogen free radicals can be accelerated, and a dual synergistic mechanism of physical preheating and chemical activation is formed.

The invention discloses a measurement and control system of gas heating equipment, which relates to the technical field of equipment measurement and control, and is characterized in that a flow feed-forward control module is used for determining a target mass flow value through a feed-forward compensation processing mechanism according to at least one parameter measured by a sensor measurement module; the temperature control module is used for determining PID control parameters of a cascade PID control structure comprising a main loop and an auxiliary loop according to the temperature parameters measured by the sensor measurement module and a preset temperature difference grading fuzzy PID control rule; and the power control module is used for determining the target heating power according to the target heating rate and the characteristic parameters of the rear-end purging object, and adjusting the heating power of the heater in combination with an anti-integral saturation mechanism configured by the temperature control module and the power control module. By adopting the system, the heating process can be accurately adjusted and quickly responded, and the temperature control stability and the equipment operation efficiency are improved.

The present invention provides a chemical vapor deposition apparatus. Gas heating and feeding devices are arranged at the top of a process chamber, the gas heating and feeding devices supply hot gas to the position above carrying areas of a carrying device, and the hot gas assists in heating laminar flow ejected from a process gas feeding device, so that the temperature difference between the upper surfaces and the lower surfaces of substrates in the carrying areas is reduced, and the formation of deposits on the ceiling of the process chamber is suppressed. In addition, the hot gas can also suppress diffusion of laminar-flow process gas away from the substrates, thereby concentrating the process gas near the surfaces of the substrates to enhance film formation on the surfaces of the substrates.

The invention relates to a molten salt groove type heat collecting device, an operation method of the molten salt groove type heat collecting device and a molten salt groove type photo-thermal power station, and belongs to the field of molten salt groove type photo-thermal power stations. The heat collection mechanism comprises a plurality of heat collectors which are connected in series through pipelines to form a heat collector group, and the two ends of the heat collector group are communicated to the molten salt tank; the heat collector set is arranged in a U shape, a pipeline at the bottom of the U shape is a middle jumper pipe, and the middle jumper pipe is located at the highest position. And a gas outlet of the gas heating mechanism is communicated with the middle jumper pipe. The two ends of the U-shaped heat collector set are communicated with the fused salt tank, the highest position of the heat collector set is communicated with the gas heating mechanism, heating and salt injection can be conveniently conducted on the heat collectors, the automation degree is high, and convenience and rapidness are achieved.

The invention relates to a double-station turbine blade thermal shock test device and a test method thereof, and the device comprises a flame gas heating system which is used for generating high-temperature flame through gas combustion to simulate transient thermal shock when an aero-engine is started; the double-station pushing platform comprises a frame, a front testing station and two rear independent testing stations, wherein the front testing station and the two rear independent testing stations are installed on the frame. The airflow cooling system is used for quickly cooling the high-temperature test piece; the infrared temperature measuring device is used for detecting the surface temperature of the blade in real time and feeding back the surface temperature to the flame gas heating system to realize closed-loop temperature control; the image acquisition device is used for acquiring appearance characteristic data of cracks on the surface of the blade in the test process; and a base. Compared with the prior art, the device has the advantages that the device has remarkable advantages in the aspects of test function integrity, working condition simulation accuracy, test efficiency and the like, and comprehensive test support can be provided for research and development of aero-engine hot end components.

The utility model relates to the technical field of coke oven heating, in particular to a mixed gas heating single-hole combustion chamber temperature adjusting system which comprises adjusting units, one end of each adjusting unit is connected with a mixed heating gas main pipe, and the other end of each adjusting unit is connected with a corresponding waste gas shutter. And the mixed coal gas sequentially passes through the mixed heating coal gas main pipe, the corresponding adjusting unit, the corresponding waste gas opening and closing device and the corresponding heat storage chamber to enter the corresponding combustion chamber. The utility model has the advantages that: the original gas heating pipeline is improved, and the regulating valve is connected with the gas heating pipeline in parallel on the basis of not changing equipment (the equipment comprises the regulating cock, the pore plate box and the exchange cock) on the gas heating pipeline, so that the independence of manual regulation is ensured, and the gas heating pipeline is convenient to use. The furnace temperature adjusting effect of each combustion chamber during mixed gas heating is improved; and various pore plates with different diameters are arranged in the pore plate box, so that the requirement of manual adjustment can be met.

The invention relates to a flameout control method, system and equipment for a gas heating water heater and a medium. The gas heating water heater comprises a sealed combustion system, a Venturi mixer and a pneumatic gas valve which are sequentially communicated, and a command valve of the pneumatic gas valve is connected to an air purification bin of the sealed combustion system through an air pressure pipe. The method comprises the following steps: in a whole machine debugging stage, setting the pressure of a zero-position adjusting spring of a command valve of the pneumatic gas valve to be a negative value; in the operation stage of the water heater, whether the combustion flame is out of flame or not is determined based on the ratio of the gas flow to the air flow; the pneumatic gas valve is closed by the controller in response to a combustion flame off-flame stall. When the smoke pipe is seriously blocked, the pneumatic gas valve can be closed, so that the whole machine is shut down, and the gas heating water heater is protected.

The utility model relates to the technical field of coke oven heating, in particular to an economical single-hole combustion chamber temperature adjusting device, which is characterized in that the input end of each heating gas unit I and the input end of each heating gas unit II are respectively connected with a heating gas main pipe; the output end of each first coal gas heating unit and the output end of each second coal gas heating unit are connected with the corresponding combustion chamber, one end of each adjusting unit is connected with the corresponding first coal gas heating unit, and the other end of each adjusting unit is connected with the corresponding second coal gas heating unit. The utility model has the advantages that the structure realizes the communication of the two heating gas main pipes, one regulating valve can be adopted to complete the flow regulation of the two gas heating pipes in the same combustion chamber, and the on-line maintenance and manual regulation are realized by changing the opening position of the T-shaped plug valve; the regulating valve is connected with the stop valve through the three-way connector, it is guaranteed that the regulating valve can be detached at any time when breaking down, and normal production is not affected.

The invention discloses an intelligent control system for an energy-saving continuous up-casting furnace based on machine learning, and particularly relates to the technical field of artificial intelligence, which comprises a data acquisition and processing module, an intelligent control module, a composite heating module, a waste heat recovery module and a safety monitoring and protection module, the data acquisition and processing module is used for acquiring, processing and storing data of temperature, flow velocity, pressure and gas components into a database, the intelligent control module is used for dynamically adjusting heating power and traction speed, generating a control instruction and sending the control instruction to the composite heating module, and the composite heating module is used for controlling the traction speed according to the instruction of the intelligent control module. The resistance heating module is used for distributing the proportion of resistance heating and fuel gas heating, the waste heat recovery module is used for recovering waste gas waste heat of a furnace body, driving an ORC power generation unit through the waste heat and converting the waste heat into electric energy, and the safety monitoring and protecting module is used for configuring multiple sensor networks in key links of the casting furnace and monitoring the safe operation state.

The utility model provides a roll shaft type V-shaped gas heating furnace, and belongs to the technical field of gas heating furnaces. The roller shaft type V-shaped gas heating furnace comprises a furnace body, a transmission roller, a supporting beam, a gas pipe, a first supporting base, an air pipe, a waste gas pipe, a first radiant tube, a first air valve, a first combustor, a second radiant tube, a second air valve and a second combustor. The two first radiant tubes are arranged above to heat workpieces placed on the multiple transmission rollers, and the second radiant tubes are arranged below to heat the workpieces placed on the multiple transmission rollers, so that all-directional heating of the workpieces is achieved, the workpieces reach the preset temperature within the shortest time, and the heating efficiency of the workpieces is improved. And the working efficiency of the product is improved. When the thickness of the workpiece is large, the workpiece is heated from the upper direction and the lower direction through the first radiant tube and the second radiant tube, so that the upper portion and the lower portion of the workpiece are prevented from being heated unevenly, the heat treatment effect on the workpiece is improved, and the machining quality of products is improved.

The invention discloses a high-temperature stable gas heat conduction temperature control method and system, and relates to the technical field of temperature control. The system comprises a high-temperature inert gas loop, a gas circulation driving module, a gas heating module, a gas heat exchange module, a gas cooling module, a gas purification and supplement module and a precise temperature sensing and control module. The high-temperature inert gas loop is configured as a closed circulation path and is used for bearing high-purity inert gas as a heat carrier; and the gas circulation driving module is arranged in the high-temperature inert gas loop and is used for driving the high-purity inert gas to continuously and circularly flow in the closed circulation path. By adopting high-purity inert gas as a heat-conducting medium and combining precise circulation driving, multi-stage heating, efficient heat exchange, active cooling, online purification and intelligent control technologies, the problems that an existing liquid heat-conducting medium is unstable in phase change at a high temperature, a metal eutectic medium is poor in safety, and a composite system is high in complexity are solved.

The present invention provides a dual-action serial circulation high-purity aluminum melt low-pressure casting device and preparation method. The present invention can complete the purification and fine-graining preparation of aluminum alloy melt in a gas-fired heating furnace, and realize the low-pressure casting of complex structural metal products in a low-pressure casting furnace. The gas-fired heating furnace and the low-pressure casting furnace do not need to be mechanically transferred. By monitoring the melt level and opening and closing the automatic angle meter and the double-furnace stop plugs, the gas-fired heating furnace can dynamically replenish the aluminum alloy melt in the low-pressure casting furnace. This dynamic replenishment causes little fluctuation in the surface of the aluminum alloy melt in the low-pressure casting furnace, and does not generate significant turbulence, air entrainment, or slag inclusions. At the same time, the replenished aluminum alloy melt is of high quality and contains less oxidized slag inclusions, greatly improving the metallurgical quality of the melt.

The utility model relates to a feed liquid atomization device, and belongs to the technical field of cigarette manufacturing. The device comprises a cold compressed air heating steel pipe spirally wound on a steam pipeline, a glass fiber thermal insulation material, a thermal insulation cover shell, a pneumatic diaphragm valve, a PLC (Programmable Logic Controller), a temperature sensor, a cold compressed air supply device and a double-medium nozzle, an inlet of the cold compressed air heating steel pipe is communicated with a cold compressed air supply device, an outlet of the cold compressed air heating steel pipe is communicated with the double-medium nozzle pre-filled with feed liquid through a hot compressed air circulation pipeline, and a compressed air stop valve is arranged on the hot compressed air circulation pipeline; the heat preservation cover shell completely wraps the cold air heating steel pipe, the space between the heat preservation cover shell and the cold air heating steel pipe is filled with glass fiber heat preservation materials, and an inlet of the cold air heating steel pipe and an outlet of the cold air heating steel pipe both extend out of the heat preservation cover shell. The accuracy of the total feeding proportion can be ensured.

The invention relates to the technical field of heating equipment, and discloses an anti-freezing control method and device for a gas heating stove, a controller and the gas heating stove. The anti-freezing control method comprises the steps that the real-time air pressure of a draught fan of the gas heating stove is detected; and when it is judged that the freezing risk exists in the gas heating furnace based on the real-time air pressure and the first preset air pressure, the gas heating furnace is lifted to the maximum rated workload from the current rated workload, and the gas heating furnace is controlled to operate at the maximum rated workload. According to the method, whether the freezing risk exists or not is judged by detecting the air pressure value, under the condition that the freezing risk exists, the rated working load of the gas heating furnace is increased, and the gas heating furnace is controlled to operate at the maximum rated working load, so that the smoke exhaust temperature is increased to melt ice condensed in a smoke pipe, smoke pipe blockage caused by freezing is avoided, and the service life of the gas heating furnace is prolonged. And the gas heating stove can work normally.

The present disclosure discloses an optimal operation control method of the air-source heat pump and gas-fired heater combined heating system, including constructing a mathematical model of the air-source heat pump and gas-fired heater combined heating system to simulate real time energy consumption; determining a comprehensive evaluation index system of the combined heating system, including primary evaluation indexes of energy conservation, environmental protection and economical efficiency, and secondary evaluation indexes of EER, clean energy utilization rate, carbon dioxide emission and operation cost; calculating indexes through an analytic hierarchy process and then constructing a comprehensive objective function, to determine operation mode when the comprehensive objective function is the maximum by taking the priority of meeting the heating requirement as a principle, so as to achieve the purpose of optimizing the combined heating system, and achieve the combined heating system efficient, energy-saving and environmental protection.

The invention belongs to the technical field of manipulators, and particularly relates to a new energy automobile battery assembly manipulator which comprises a rotating base, a mechanical arm and two clamping arms, the mechanical arm is fixedly arranged at the top of the rotating base, the two clamping arms are both arranged at the tail end of the mechanical arm, and the new energy automobile battery assembly manipulator further comprises an air suction dust removal mechanism. Dust is captured through the air suction and dust removal mechanism to purify air, impurities on the surface of a battery cell are directionally removed through the air blowing mechanism, slipping is avoided, and the assembly precision is improved; meanwhile, the gas heating mechanism heats the gas in a low-temperature environment, so that the temperature difference between the clamping arms and the battery cell is reduced, and condensed water is prevented from being generated to stabilize the friction coefficient; in addition, the self-adaptive adjusting mechanism automatically adjusts the blowing strength according to the sizes of the battery cells, the large-size battery cells increase the air output, thorough cleaning is ensured, the small-size battery cells reduce the air output, displacement is avoided, flexible adaptation of the battery cells of multiple specifications is achieved, and the reliability, precision and production efficiency of the mechanical arm in different environments are integrally improved.

The invention relates to the technical field of tungsten filament drawing processing, and provides a fuel gas heating ten-die wire drawing machine and a high-performance tungsten filament drawing process. The fuel gas heating ten-mold wire drawing machine comprises a rack and an electric controller, wherein a magnetic damping pay-off reel, a guide wheel, a natural gas fire grate, a wire drawing mold frame, a cone pulley and a servo wire take-up reel are sequentially arranged on the rack along a wire machining path; the natural gas fire grate comprises ten heating units, an electric proportional valve is arranged on the rack, and the electric proportional valve is in signal connection with an electric controller; a temperature measuring sensor is arranged above the heating unit, the temperature measuring sensor is in signal connection with the electrical controller, and the temperature measuring sensor is used for monitoring the temperature of the wire rod in real time; the high-performance tungsten filament drawing process comprises the following steps: S1, rough drawing; s2, medium drawing; s3, fine drawing; the step S1 is implemented by adopting the fuel gas heating ten-die wire drawing machine; through collaborative innovation of equipment and a process, the effects of improving the strength of the tungsten filament, improving the performance of the tungsten filament and reducing the wire breakage rate are achieved.

The invention relates to the technical field of medical instruments, and discloses a disinfection device for a reproductive medicine examination room, which comprises a flowing gas heating mechanism and a rotary reciprocating shaking mechanism, a lower movable disc which is positioned in the vertical disinfection barrel and can rotate, an upper movable disc which is positioned right above the lower movable disc and can generate a longitudinal reciprocating motion effect, and a storage movable plate which longitudinally moves along with the upper movable disc and can support an instrument are arranged in the vertical disinfection barrel. According to the disinfection device for the reproductive medicine examination room, an instrument is effectively disinfected through disinfection gas, the disinfection gas is gas and has the rapid movement and permeation functions, in addition, the instrument can shake in the disinfection process through the device, the instrument can generate a movement gap through shaking, and therefore the instrument can be disinfected conveniently. And the disinfection gas can generate a flowing disinfection effect along the whole surface of the instrument, so that the disinfection range of the instrument is expanded, and the infection risk of the instrument in the subsequent use process is reduced.

The invention discloses a gas heating diffusion welding process for a titanium alloy hollow structure. The gas heating diffusion welding process comprises the steps that a skin containing an edge pressing area is formed; processing the framework; the skin and the framework are assembled; the edge pressing area of the skin is sealed in a welding mode and connected with an air pipe; putting the structure into a mold; putting the mold into a press machine, and connecting an air pipe with an air path system; the gas path system introduces gas to wash the structure; the pressure of the introduced gas is kept positive, and the introduced gas is heated by the gas path system; after the gas is heated to the working temperature, the pressure of the press machine is set to be working pressure; increasing the pressure of the introduced gas, and keeping until the welding is finished; heating of the introduced gas is stopped, the air pressure of the introduced gas and the pressure of the press machine are kept unchanged, and the introduced gas is cooled; and cooling the structure to room temperature. A gas heating mode is adopted, the equipment requirement is reduced, meanwhile, deformation in the forming process can be eliminated by adopting the skin to integrally cover the framework, and the forming quality is improved.

To provide a technique capable of improving a deposition rate when forming a silicon-containing film at a low temperature.SOLUTION: According to an aspect of the present disclosure, there is provided a film forming method including loading a plurality of substrates into a process container, heating an inside of the process container by a container heating unit provided around the process container, and heating a first precursor gas in a first gas nozzle by a gas heating unit included in the first gas nozzle. And repeating a cycle a plurality of times, the cycle including supplying the heated first precursor gas from the first gas nozzle into the process container, supplying a first reaction gas that reacts with the first precursor gas from a second gas nozzle into the process container, supplying the first precursor gas, and supplying the first reaction gas.SELECTED DRAWING: Figure 1

The invention belongs to the technical field of wind turbine blade ice prevention and removal, and discloses a deicing system and method for a wind turbine blade, and the deicing system comprises an electric heating deicing subsystem and a gas heating deicing subsystem; the electric heating deicing subsystem is used for heating and deicing the blade front edge of the wind power blade in an electric heating mode; the gas heat deicing subsystem is used for heating and deicing a blade tip area of the wind power blade by using heat source gas; the electric heating deicing subsystem comprises an electric heating film; the electrothermal film covers a blade front edge preset area of the wind power blade; the gas heat deicing subsystem comprises a hot air source and a hot air conveying pipeline; the hot air source is arranged at the blade root part of the wind power blade; an inlet of the hot air conveying pipeline is connected with an outlet of the hot air source, and an outlet of the hot air conveying pipeline extends to the tail end of a cavity in a blade tip of the wind power blade; according to the invention, regional directional heating and deicing of the wind power blade are realized, so that a high-efficiency, low-power and full-coverage deicing target is realized.

The utility model relates to the technical field of coke oven heating, in particular to a coke oven gas heating single-hole combustion chamber temperature adjusting system which comprises adjusting units, one end of each adjusting unit is connected with a heating gas main pipe, and the other end of each adjusting unit is connected with a corresponding combustion chamber. The utility model has the advantages that the regulating unit is connected with the combustion chamber gas heating pipeline in parallel, so that the regulating valves are additionally arranged on the two sides of the pore plate box while the original function of the pore plate box is reserved, and the temperature regulating effect is improved; the function of an original pore plate box is reserved, when the opening of the adjusting valve is too large or too small and cannot be adjusted, an operator can change the opening of the adjusting valve by changing the pore plate in the pore plate box, and operation is easy and easy to achieve; the number of the regulating valves of the regulating unit of each coke oven is large, and the regulating valves are arranged on the small-size pipeline connected with the gas main pipe in parallel, so that the caliber of each regulating valve is greatly reduced; the size of the regulating valve is reduced, so that the gas consumption of each regulating valve is reduced, and the energy consumption is greatly reduced.

The invention belongs to the technical field of carbon neutralization, and discloses a synergistic efficient low-carbon electrolysis water and total-oxygen blast furnace coupled low-carbon steel coproduction system. Comprising an electrolyzed water system; a blast gas inlet of the total-oxygen blast furnace system is connected with an oxygen outlet of the electrolyzed water system, and the total-oxygen blast furnace system is used for receiving oxygen to generate top circulating coal gas rich in carbon monoxide and carbon dioxide; an inlet of the coal gas purification system is connected with a circulating coal gas outlet of the total-oxygen blast furnace system; a first inlet of the methanol synthesis system is connected with a hydrogen outlet of the water electrolysis system, a second inlet of the methanol synthesis system is connected with a purified gas outlet of the gas purification system, and the methanol synthesis system is used for receiving hydrogen and purified circulating gas to generate methanol; the circulating gas heating system is arranged in a circulating gas path between the gas purification system and the total-oxygen blast furnace system and is used for heating circulating gas returned to the blast furnace; an inlet of the flue gas decarburization system is connected with a combustion flue gas outlet of the circulating gas heating system, and the flue gas decarburization system is used for conveying carbon dioxide in the flue gas to the second inlet.

The invention relates to the technical field of heating equipment, and discloses a control method and device of gas heating equipment, a controller and the gas heating equipment. In response to the fact that the gas heating equipment is switched from a flameout state to a combustion state, if the set heating water outlet temperature is larger than the first temperature, the gas heating equipment is switched to the combustion state; if yes, the gas heating equipment is controlled to operate with the set heating water outlet temperature as the target heating water outlet temperature and reach the first preset duration, and the set heating water outlet temperature is the heating water outlet temperature set based on the heating requirement; and after the gas heating equipment operates by taking the set heating water outlet temperature as the target heating water outlet temperature for a first preset duration, the gas heating equipment is controlled to operate by taking the preset heating water outlet temperature as the target heating water outlet temperature. Therefore, smoke leakage caused by the fact that condensate water in the water seal device is completely evaporated is avoided, after the condensate water in the water seal device is evaporated, the condensate water in the water seal device is supplemented to maintain the amount of the condensate water in the water seal device, and the sealing effect of the water seal device on smoke is guaranteed.

The invention belongs to the technical field of ferrous metallurgy, and relates to a reducing gas heating system and process for hydrogen metallurgy, the system comprises a heating furnace, a hydrogen-based shaft furnace, a decarburization device and gas connecting pipelines among the devices; the heating furnace is used for preheating reducing gas and supplying the reducing gas to the hydrogen-based shaft furnace; reaction gas generated by the hydrogen-based shaft furnace is decarbonized by a decarbonization device to generate reducing gas and decarbonized tail gas; a burner is arranged on the heating furnace and is respectively connected with decarburized tail gas, reaction gas and an external gas pipe; a decarburized tail gas preheater is arranged on a smoke exhaust pipe of the heating furnace; an outlet of the decarburized tail gas main pipe is respectively connected with a decarburized tail gas diffusing pipe and a decarburized tail gas burner supply pipe; a reducing gas pipeline is connected with the heating furnace; the decarburization tail gas burner supply pipe is connected with the decarburization tail gas preheater, and the preheated decarburization tail gas is supplied to a burner of the heating furnace. The byproduct gas in the hydrogen metallurgy process is fully utilized as the fuel of the heating furnace, the energy utilization efficiency is effectively improved, and the production cost is reduced.

In a case where a hot-gas heating operation mode is continuously operated, control of a refrigerant circuit that enables efficient consumption of energy of a compressor (rotation number control of the compressor) is executed. The vehicle air-conditioning device includes a refrigerant circuit that depressurizes refrigerant discharged from a compressor and returns the refrigerant to the compressor, a vehicle cabin air-conditioning device that temperature-adjusts air blown into a vehicle cabin through an indoor heat exchanger of the refrigerant circuit, and a control device that controls the refrigerant circuit and the vehicle cabin air-conditioning device on the basis of input information. The refrigerant circuit includes a refrigerant flow path that has a hot-gas bypass path that depressurizes a portion of refrigerant compressed in the compressor without passing through the indoor heat exchanger and flows the refrigerant to a suction side of the compressor, and enables the hot-gas heating operation mode. The control device, in the hot-gas heating operation mode in which the portion of the refrigerant compressed in the compressor flows to the indoor heat exchanger and the remaining refrigerant flows to the hot-gas bypass path, executes control of variably setting a target pressure of the refrigerant circuit in a range in which a heating requirement can be maintained, in consideration of a necessary capacity obtained on the basis of a set heating requirement and a vehicle requirement.

The utility model relates to the technical field of gas heating, in particular to a combustor outdoor installation type high-power gas radiation heating device which comprises an installation plate, one side of the installation plate is connected with four groups of radiation heating device bodies which are mutually symmetrical, and a plurality of groups of radiation frames are arranged at the ends, away from the installation plate, of the radiation heating device bodies. When a radiant tube with gas leakage needs to be maintained and replaced, a sliding plate slides along an adjusting groove, so that a positioning pin is pulled out of a positioning hole formed in a mounting rod, then the mounting rod slides along a mounting groove, the mounting rod is moved out of the mounting groove, dismounting of the radiant heating device body is completed, then a limiting bolt is rotated, and the radiant tube with gas leakage can be maintained and replaced. When the radiant tube needs to be replaced and maintained, limiting of the limiting plate by the limiting bolt is relieved, then the limiting plate slides to be pulled out of the fixing sleeve, and then the radiant tube needing to be replaced and maintained is taken out of the radiant frame, so that the radiant tube is conveniently maintained.

The utility model relates to the technical field of gas heating, and discloses a heat source structure and a fluidization crystal transformation device. The heat source structure comprises a pipeline which is provided with a channel penetrating in the axial direction of the pipeline, and the channel is used for gas to pass through; the heating assembly is used for heating the pipeline; wherein the channel is internally provided with filler, the filler is provided with a gap, and gas can be discharged from the gas outlet of the channel through the gap. The fluidization crystal transformation device comprises a furnace body and a heat source structure. According to the technical scheme, the technical problem of high energy consumption of a device for preparing anhydrous iron phosphate in the prior art can be solved.