63results about How to "Improve heat utilization" patented technology

The utility model belongs to the technical field of abandoned oil well transformation, and particularly relates to a deep geothermal single well heat exchange system in an abandoned oil well, which comprises a sandstone heat reservoir and a production layer sleeve, a plurality of water inlet holes corresponding to the sandstone heat reservoir penetrate through the side wall of the production layer sleeve, and a branch pipeline inclining downwards is connected to the side wall of the production layer sleeve. The lower end of the branch pipeline extends into a sandstone thermal reservoir, the lower end of the inner side of the production layer casing pipe is connected with an artificial well bottom, the inner side of the production layer casing pipe is further connected with a packer located on the lower side of a port of the branch pipeline, the upper end of the inner side of the production layer casing pipe is provided with a booster water pump and a shell-and-tube heat exchanger, and a water inlet of the booster water pump is connected with a water production tubular column. The lower end of the water extraction pipe column extends into the sandstone heat reservoir, and a water outlet of the booster water pump is connected with the shell-and-tube heat exchanger through a lifting pipe. The device is convenient to install and maintain and high in heat energy utilization rate.

This utility model provides a green silicon carbide calcination and salt washing equipment with dust prevention function, belonging to the technical field of green silicon carbide calcination and salt washing equipment. It includes an installation mechanism comprising a fixed frame, a drive power supply adapted to and installed on the side surface of the fixed frame, a mounting plate fixedly connected to the inner surface of the fixed frame, and a protective component fixedly installed on the surface of the mounting plate; and an operating mechanism comprising an operating tank fixedly installed in the center of the fixed frame, a stirring component adapted to and installed on the surface of the operating pipe, a feeding tank connected to the side wall of the stirring component, a feeding motor adapted to and installed on the side surface of the feeding tank, a fixing rod fixedly installed on the side surface of the operating tank, a lifting pipe fixedly connected to the end of the fixing rod, and a suction pump adapted to and installed at the end of the lifting pipe. This utility model effectively suppresses dust overflow and improves the working environment through the setting of the protective component and the sealed operating tank structure; the combined use of the insulation layer and the heating layer improves thermal energy utilization and reduces energy consumption.

The utility model provides a waste calcium carbide remelting and upgrading conveying device, which belongs to the technical field of conveying devices, and comprises a crushing chamber, a rotator arranged in the crushing chamber, two first rotating shafts rotationally connected in the rotator, two crushers fixedly connected to the lower ends of the two first rotating shafts, and two second rotating shafts rotationally connected in the two crushers. The two first gears are fixedly connected to the circumferential surfaces of the two first rotating shafts, the gear ring is fixedly connected to the interior of the crushing chamber, and the first gears are meshed with the gear ring. Meanwhile, powder calcium carbide directly reaches the furnace bottom through the inside of the electrode and does not make contact with a furnace charge layer, current shunting is eradicated, waste products are directly added to the furnace bottom after being powdered and can be rapidly reacted and fused with semi-finished product calcium carbide, and electric energy consumption is greatly reduced.

This utility model belongs to the technical field of three-dimensional dryers, and discloses a storage structure for a detachable three-dimensional dryer. It includes a storage hopper with an open top, and a long, narrow discharge port at the bottom of the hopper. Below the discharge port, the hopper has a material dispersing mechanism, which includes a material dispersing frame mounted directly below the discharge port via a positioning frame. The material dispersing frame has inclined ramps on both sides. Multiple horizontally arranged support frames are provided on the outside of the hopper, with positioning seats at the ends. Corresponding supports are provided on the inner wall of the three-dimensional dryer, and the positioning seats are fixed to the supports with bolts. An anti-bridging mechanism is also provided inside the hopper. This utility model ensures sufficient contact between the material and the hot air inside the three-dimensional dryer, resulting in better drying effect, improved heat utilization of the hot air, and reduced energy consumption.

This utility model discloses a floor heating device, comprising multiple floor heating units. Each floor heating unit includes, from bottom to top, an insulation layer, a heat exchange layer, a heat transfer layer, and a floor. A heat pipe is disposed within the heat exchange layer; a phase change medium is disposed within the heat transfer layer. Encasing the phase change medium within the heat transfer layer prevents leakage, facilitates sealing testing of the heat transfer layer, and promotes modular production and assembly of the floor heating units. It also improves the stability and reliability of the floor heating units. The heat released by the heat pipes is directionally transferred to the heat transfer layer and the floor, improving heat utilization efficiency.

The invention relates to a collecting ring device and a generator, the collecting ring device comprises a rotor assembly and a brush holder assembly, the rotor assembly comprises a rotating shaft, slip rings, a fan and a wind shield, the slip rings and the fan sleeve the rotating shaft, the two slip rings are located at two sides of the fan, and the wind shield is in a volute shape and covers the fan. The brush carrier assembly comprises brush boxes and electric brushes, the multiple brush boxes surround the periphery of the sliding ring in the circumferential direction and form a group, the two sides of the wind shield are each provided with two groups of brush boxes in the axial direction of the rotating shaft, the electric brushes are arranged in the brush boxes and make contact with the sliding ring, and an air outlet of the wind shield faces the contact face of the electric brushes and the sliding ring. The air flow is guided by the volute type wind shield, so that cold air is distributed more uniformly and dispersedly, local air flow dead angles are avoided, and the heat dissipation effect of the cold air is improved. And moreover, cold air exhausted by the wind shield sequentially flows through the two groups of brush boxes, so that the airflow continuously exchanges heat in the axial flowing process, and the heat exchange path is prolonged.

The utility model belongs to the technical field of circuit board tin removal and tin soldering equipment, and particularly relates to a heating table which comprises a shell, a heat conduction panel, a first clamping block and a second clamping block, the upper end of the shell is provided with a mounting hole, a heating disc is arranged at the mounting hole, the heat conduction panel is arranged above the heating disc, and the first clamping block and the second clamping block are arranged on the shell. The upper end of the heat conduction panel is provided with a heating position corresponding to the heating disc, heat released by the heating disc can be transmitted to the heating position, the first clamping block and the second clamping block are oppositely arranged on the two sides of the heating position, and the first clamping block can move towards the direction of the second clamping block so that a circuit board on the heating position can abut against the second clamping block. According to the utility model, the circuit board can be in a horizontal state through the arrangement of the step, all positions of the circuit board can be uniformly heated, and the circuit board can be kept stable and the operation accuracy is improved when the electronic component is disassembled or welded and the like through the mode that the first clamping block is arranged to move towards the direction of the second clamping block.

The invention discloses an ammonia-methanol coupling gas production device and a use method thereof, and belongs to the technical field of controllable atmosphere preparation, the ammonia-methanol coupling gas production device comprises a central combustion zone, a peripheral cracking zone and a tail mixing purification zone which are coaxially nested; the central combustion area comprises a hearth wall, and the hearth wall is of a honeycomb-shaped porous heat exchange structure; the peripheral cracking area is arranged on the outer side of the central combustion area, a catalyst bed layer of a spiral flow guide structure is arranged in the peripheral cracking area, and a high-temperature-resistant heat-conducting filling layer is arranged between the catalyst bed layer and the hearth wall of the central combustion area; the tail mixing and purifying area is connected to the downstream of the central combustion area and the peripheral cracking area and used for mixing and purifying combustion products from the central combustion area and cracking gas from the peripheral cracking area. By optimizing a heat exchange interface and a catalyst bed layer structure, the heat transfer uniformity and the response speed are enhanced, so that stable temperature control and preparation of high-purity mixed gas are realized.

This utility model discloses a multi-layer variable diameter spiral molten salt heat exchanger, including a lifting mechanism and a spiral coil assembly. The lifting mechanism drives the spiral coil assembly to move up and down within the molten salt tank. The spiral coil assembly includes a spiral coil, an oil inlet manifold, and an oil outlet manifold. The oil inlet manifold has an oil inlet, and the oil outlet manifold has an oil outlet. The spiral coil is spirally coiled below the oil inlet and oil outlet manifolds. The advantages of this utility model are: it enables direct and controllable heat exchange in the molten salt storage tank, achieving high heat exchange efficiency and a higher system thermal energy utilization rate than traditional molten salt heat exchange systems; the implementation of this equipment system can reduce system investment, resulting in significant advantages in system operation benefits, and it is easily controlled digitally.

This invention relates to the field of thermal management technology, and more particularly to a thermal management system, a control method, an electronic device, a computer-readable storage medium, and a vehicle. The thermal management system includes a heating circuit, a battery circuit, and a refrigerant circuit. The heating circuit includes a heater core and an engine. The battery circuit is coupled to the heating circuit, and the refrigerant circuit is coupled to the battery circuit. The refrigerant circuit includes an internal condenser. This thermal management system fully utilizes the waste heat from the engine. The control method for the thermal management system controls the system. The electronic device is capable of executing the control method. The medium stores a program that can execute the control method. The vehicle includes the thermal management system.

This invention relates to the field of petroleum proppant production equipment technology, specifically disclosing a petroleum proppant preheating device with a spreading structure, including a spreading box and a preheating pipe. The spreading box is installed on one side of the preheating pipe and is connected to it. The spreading box has a material distribution structure and a material guiding structure inside. The material distribution structure includes an inclined outer cylinder and an inner cylinder. The inner cylinder is divided into multiple screening chambers by an annular partition. Each screening chamber is equipped with a grading screen plate with a different aperture at the bottom. The inner cylinder is equipped with a material agitator to move the material blanks. The material guiding structure is equipped with multiple sets of material guiding components. The material guiding components are equipped with stepped material guiding plates. A spreading wheel is set at the discharge end of the material guiding components. Two gas equalization plates with different apertures are fixed inside the preheating pipe. This invention separates material blanks of different particle sizes through the grading screen plates, sets different lengths of preheating paths through the material guiding components, and spreads the material blanks in layers through the spreading wheel. The gas equalization plates regulate the hot flue gas, so that all kinds of material blanks are heated evenly, reducing the bursting and pulverization of the material blanks during calcination and maintaining the roundness of the particles.

The invention relates to the technical field of industrial heating furnaces, and discloses a skid-mounted electric conduction oil boiler which comprises a bottom frame, a first shell is fixedly connected to the top of the bottom frame, a support is fixedly connected to the inner wall of the first shell, and a heating assembly is fixedly connected to the inner wall of the support. The circulation sectional area of an oil way is reduced, heat conduction oil flows through the annular channel closer to the heating pipe in a concentrated mode, and therefore the average heat transfer distance from the surface of the heating pipe to most oil liquid is shortened, and the problems that in traditional large-space heating, due to the fact that the distance between the oil liquid and a heat source is too long, heat resistance is increased, and heating efficiency is low are effectively solved. And meanwhile, the two internal threaded rings are utilized to guide oil liquid to spirally advance, so that a laminar flow boundary layer which is not beneficial to heat transfer is destroyed, an effective path of the oil liquid in a high-temperature heating area is prolonged, the retention time of the oil liquid in the high-temperature heating area is prolonged, and the overall heat efficiency of the heating device is improved.

The utility model relates to the technical field of steam devices, and discloses an efficient energy-saving steam device which comprises a heat preservation shell, a steam outlet pipe arranged at the top of the heat preservation shell, a heating assembly installed in the heat preservation shell and a control module connected with the heating assembly. The heating assembly comprises a heating device, a heat conduction copper sleeve wrapping the heating device, and a spiral copper sheet surrounding the heat conduction copper sleeve. And the heat conduction copper sleeve and the spiral copper sheet can obviously improve the heat exchange efficiency, so that the heat transfer is more sufficient, and the heat energy utilization rate is greatly improved. The design of the heating assembly effectively reduces the thermal resistance of the surface of the heating element, and further improves the heat transfer efficiency, thereby reducing the energy consumption. By optimizing the heating mode and the heat exchange structure, the energy consumption can be obviously reduced while the required temperature is reached, the operation cost is reduced, and the burden on the environment is relieved.

The application relates to the technical field of aerosol generation, in particular to a heating assembly and an aerosol generating device. The heating assembly comprises a first heat conductor, a second heat conductor and a heating body. The heating body is arranged on at least two of the side wall, the bottom wall and the second heat conductor. The heating body is used for generating heat and conducting the heat to the first heat conductor and the second heat conductor. The inner surface of the side wall is provided with a plurality of protruding portions. An air inlet channel is formed between two adjacent protruding portions. The air inlet channel is communicated with the external environment through an opening. Since the heating body is arranged on at least two of the side wall, the bottom wall and the second heat conductor, the heating area can be further increased, which helps to improve the generation speed of the aerosol. The contact between the first heat conductor, the second heat conductor and the aerosol generating article can improve the heat transfer efficiency and the heat utilization rate. The air inlet channel is formed by the protruding portions, so that the heat conduction, heat radiation and hot air flow can synergistically act on the heating body to solve the problem of uneven heating.

The utility model discloses a kind of burn-on machines capable of reducing gas consumption, it is related to burn-on machine technical field, including machine body, right side inside machine body is sequentially provided with puffing cavity, combustion chamber and mounting cavity from top to bottom, the inside of mounting cavity is provided with burner, burner is used to make the gas combustion sent into combustion chamber;The inside of puffing cavity is movably connected with the support frame of symmetrical distribution, slidingly connected with burn-on net between two support frames, and burn-on net is used to place to be processed snow cake, the inside of support frame bottom end is provided with connecting structure, and connecting structure is used to realize the positioning of support frame.The utility model cooperates with guide groove, guide block by connecting structure, can adjust the distance between burn-on net and burner according to the category of food, while cooperating with the adjustment of pressure gauge close to burner, can be convenient to improve the heat energy utilization of burn-on machine, reduce gas consumption, so as to energy saving and emission reduction.

The utility model relates to an air separation unit precooling system suitable for a cold region. The air separation unit precooling system comprises an air compressor, a hot water heat exchanger, an air cooling tower and a water cooling tower, an air outlet of the air compressor is communicated with an air inlet of the hot water heat exchanger; an air outlet of the hot water heat exchanger is communicated with an air inlet of the air cooling tower; the hot water heat exchanger is provided with a circulating hot water inlet and outlet communicated with a hot water station; the air cooling tower comprises a cooling water section and a chilled water section, the chilled water section is provided with a chilled water inlet and is communicated with the chilled water outlet of the water cooling tower, the cooling water section is provided with a circulating cooling water inlet, an air inlet of the air cooling tower is arranged below the cooling water section, and an exhaust pipe is arranged at the top end of the air cooling tower; and the chilled water outlet of the water cooling tower is upwards provided with a waste nitrogen inlet and a circulating water supply inlet in sequence. According to the utility model, the power consumption for conveying cooling water of the air cooling tower is reduced, the consumption for heating hot water by using steam in a traditional hot water station is reduced, the heat utilization rate of the whole device is improved, and the operation cost of a factory is effectively reduced.

The utility model provides an integrated pouring hearth bottom-mounted coking device, which belongs to the technical field of coking tests and comprises a heating chamber, a carbonization chamber, a heat preservation and insulation plate, a silicon carbide rod, a lifting device, a furnace door, a supporting seat and a damping mechanism. A heating chamber and a carbonization chamber are arranged in the coke oven, and a heat preservation and insulation plate and a silicon carbide rod are arranged in the heating chamber; the lifting device is arranged at the bottom of the coke oven; the coal box is placed on the supporting seat; an opening is formed in the bottom of the carbonization chamber, the supporting seat and the coal box are embedded into the carbonization chamber, and the furnace door cover is arranged at the opening; heat preservation blankets are filled between gaps of the silicon carbide rods and between the through grooves and the silicon carbide rods; by arranging the silicon carbide rods and the heat preservation and insulation plates and filling the heat preservation blankets between the through grooves and the silicon carbide rods, heat loss is effectively reduced, and meanwhile the effect of protecting the heating elements is achieved; and through combined use of the damping mechanism and the lifting device, it is guaranteed that the coal box can be stably transited during transferring, and damage to key components due to vibration is reduced.

This invention discloses a direct ironmaking method and system using an electromagnetically heated rotary kiln in a plasma-cracking water hydrogen production environment, belonging to the field of metallurgical reduction technology. The method includes: feeding the raw materials to be reduced and a high-temperature reducing agent into an electromagnetically heated rotary kiln; purging the raw materials with high-temperature reducing gas while the rotary kiln rotates, resulting in two raw materials; subjecting the two raw materials to reduction treatments through high-temperature reducing gas purging and rotary kiln rotation; removing dust, evaporating and cooling the reduction products, and grinding them to obtain tail gas carrying ultrafine carbon powder, water vapor, reduced iron, and semi-coke; feeding the tail gas and water vapor into a plasma-cracking water hydrogen production reforming unit to obtain high-temperature hydrogen-rich syngas; cooling the high-temperature hydrogen-rich syngas and feeding it into a gas holder, then circulating it through a heating and pressurization process back into the electromagnetically heated rotary kiln. This invention solves the problems of low reduction efficiency and insufficient contact area in traditional ironmaking processes, achieving efficient recycling of reducing gas resources.

The application discloses a rotary kiln for heat reaction of red mud material and recycling of waste heat, which is characterized by comprising an inner cylinder with a feeding port and a discharging port, an outer cylinder, a combustion machine with a fire outlet, a power device, a material lifting plate, a heat conducting pipe and a smoke outlet; the material lifting plate is connected to the inner wall of the inner cylinder; the power device is connected to the inner cylinder and can drive the inner cylinder to rotate along the axis of the inner cylinder; the inner cylinder is located in the outer cylinder, and an annular cavity is formed between the outer cylinder and the inner cylinder; the fire outlet of the combustion machine is connected to the outer cylinder and extends into the annular cavity; the heat conducting pipe is connected to the inner wall of the inner cylinder at both ends and extends into the annular cavity; and the smoke outlet is located on the wall of the outer cylinder and communicates with the annular cavity. The application realizes external flame heating without pollution of the reactants and has high heat energy utilization rate.

The utility model discloses a heating detection device for an overheat protector, which relates to the technical field of overheat protector detection and comprises a conveying belt, a primary quality inspection screening mechanism, a preheating mechanism and a heating mechanism are fixedly mounted at the top of the conveying belt, and the primary quality inspection screening mechanism, the preheating mechanism and the heating mechanism are fixedly mounted at the top of the conveying belt. A secondary quality inspection screening mechanism is fixedly mounted at the top of the conveying belt, and a qualified product collecting mechanism is mounted at the tail of the conveying belt; before the overheat protectors are heated by the heating mechanism, the first-stage quality inspection and screening mechanism is used for quality inspection and screening, unheated defective overheat protectors can be screened out in the process, and then first-stage quality inspection qualified products are sequentially heated by the heating mechanism and subjected to quality inspection and screening by the second-stage quality inspection and screening mechanism; and finally, the overheat protectors entering the qualified product collecting mechanism are really qualified products, so that the defective rate of the overheat protectors after quality inspection is effectively reduced.

The utility model belongs to the technical field of caustic soda evaporation and concentration, and particularly relates to a triple-effect countercurrent falling film evaporation system for improving caustic soda concentration, which comprises a first-effect evaporation chamber, a second-effect evaporation chamber and a triple-effect evaporation chamber which are sequentially connected in series end to end, the flowing directions of low-concentration caustic soda and primary steam in the first-effect evaporation chamber, the second-effect evaporation chamber and the third-effect evaporation chamber are opposite, an alkali liquor heat energy recovery unit and a steam condensate heat energy recovery unit are additionally arranged, and the low-concentration caustic soda exchanges heat with the high-concentration caustic soda by means of the alkali liquor heat energy recovery unit; and the low-concentration caustic soda exchanges heat with the steam condensate of the next-stage evaporation chamber by means of the steam condensate heat energy recovery unit. The alkali liquor heat energy recovery unit and the steam condensate heat energy recovery unit are additionally arranged for heat energy recovery, and through dual heat energy recovery, the heat energy utilization rate is improved, the primary steam consumption is reduced, and therefore the production energy consumption cost is reduced.

The utility model belongs to gas -cooker technical field discloses auxiliary cooking assembly and gas -cooker. Auxiliary cooking assembly includes the enclosure and the pot cover, and the enclosure is the hollow structure of two ends opening, and the first end of enclosure can be with support assembly insertion joint cooperation, and the pot cover can cover set up on the enclosure to form the cooking cavity with exhaust port, and the cooking cavity is used for accommodating the cooking utensil placed on the support assembly. The cooking cavity with exhaust port is constructed through the cooperation of pot cover and enclosure, and the exhaust emission is effectively realized. Moreover, the cooking cavity wraps the cooking utensil, effectively reduces the heat loss, improves the heat energy utilization efficiency and the cooking utensil heating uniformity, thereby improves the cooking efficiency and the food material taste stability. Moreover, the enclosure cooperates with the support assembly through the detachable connection mode, and the structure is simple, the adaptability is strong, can be integrated with the existing gas -cooker conveniently, has good commonality and practicality.

The utility model embodiment provides a kind of open duck oven with thermal cycle device, comprising: furnace body, furnace body includes furnace wall, and furnace wall is enclosed and is heated chamber of roasting food;Furnace wall is provided with open furnace mouth, and open furnace mouth is provided with thermal cycle device, and thermal cycle device changes the airflow direction in furnace body to the predetermined direction circulation;Thermal cycle device includes flow guide component, and the airflow passage that makes heat with airflow circulation is formed in flow guide component;Flow guide component is provided with first air outlet at the top of open furnace mouth, and first air outlet is communicated with airflow passage, and the air outlet direction of first air outlet extends towards the bottom direction of open furnace mouth;Thermal cycle device is provided with air inlet at the bottom of open furnace mouth, and air inlet is communicated with airflow passage.The utility model embodiment is provided with thermal cycle device inside open furnace mouth effectively utilizes the heat of the oven mouth place of the oven secondary circulation utilization, prevents inside and outside temperature exchange, improves heat utilization rate, reaches the effect of energy saving and furnace temperature uniformity.

The present invention discloses an intelligent thermal energy circulation device and a control method for improving sterilization, belonging to the technical field of drying devices supporting sterilization equipment. It includes a box body, a power unit, a heating unit, and a dehumidification unit. Each unit is connected through a circulation pipeline to form a hot air circulation closed loop; the power unit and the heating unit are arranged below the box body, and the dehumidification unit is arranged above the box body. The heating unit includes a ceramic resistance heating rod with an overheat temperature protector to achieve independent over-temperature protection; the dehumidification unit uses a laminated honeycomb water-cooled plate in combination with a heat dissipation fan to achieve efficient condensation dehumidification. The present invention realizes the recycling of thermal energy through a closed-loop hot air circulation, combines multiple safety protections and intelligent dehumidification control, solves the problems of thermal energy waste, incomplete dehumidification, poor heating safety, drying dead corners, and easy damage of the fan in existing drying equipment, significantly improves the drying efficiency and equipment reliability, and is applicable to the pre-treatment drying process of instruments for hydrogen peroxide low-temperature plasma sterilizers.

The utility model belongs to a module assembly type industrial electric furnace, which comprises a shell, an electric group belt and an insulator, the module assembly type industrial electric furnace is composed of the shell, a heating element module and a top cover module structure, the heating element module is arranged at the lower end of the top cover module structure, and the insulator is arranged on the shell. The heating element module is located in the inner space of the shell through heating element inlets of the shell, the upper end face of the shell is provided with a plurality of heating element inlets at intervals, and the heating element inlets are communicated with the inner space of the shell; a supporting frame of the heating piece module is a rectangular frame, and frame lifting lugs are arranged at the four corners of the top end of the supporting frame. By adopting a module assembly type structure, the heating device can be changed according to the change of the heating quantity required by a user, and has the advantages of high energy heat utilization rate, high repair and replacement speed, simplicity in operation, easiness in transportation and assembly, safety, reliability and good use effect.

The invention provides a system for disposing alternative fuel based on a cement kiln, comprising: a preheating mechanism suitable for preheating a raw material to obtain a hot raw material; the conversion mechanism is suitable for containing alternative fuel and heating the alternative fuel to a preset temperature at which combustible gas and solid products are generated; and the decomposition mechanism is communicated with the preheating mechanism and the conversion mechanism and is suitable for accommodating combustible gas for combustion so as to calcine the hot raw material and the solid product to form a decomposition product.

The utility model relates to a double-layer asphalt melting device with side feeding, belongs to the technical field of asphalt melting equipment, and aims to solve the problems that an existing asphalt melting device is high in operation cost, large in occupied space after synergistic improvement and poor in economical efficiency, the double-layer asphalt melting device comprises a shell and two heat conduction oil pipe heating units, the shell is divided into an upper layer area and a lower layer area, the upper layer area and the lower layer area are communicated, the two heat conduction oil pipe heating units are arranged in the upper layer area and the lower layer area in the shell respectively, a plurality of feeding ports are machined in the front side wall of each area, and a sealing door is correspondingly arranged at each feeding port. The sealing door structure located on the upper layer completes opening and closing actions in a pneumatic upturning mode, and the sealing door structure located on the lower layer completes opening and closing actions in a manual mode. The device is mainly used for melting asphalt blocks in the asphalt production process.

The invention discloses a fuel cell solid hydrogen storage thermal management circulating system and a control method, and belongs to the technical field of fuel cell thermal management and hydrogen storage. The system comprises a high-pressure hydrogen source, a solid-state hydrogen storage auxiliary heat source device, a fuel cell stack, a heat exchange mechanism, a pipeline switching unit and a controller, wherein the controller is in signal connection with each component and performs staged control; the control method depends on the system, in the starting stage, high-pressure hydrogen is controlled to enter the solid-state hydrogen storage auxiliary heat source device to absorb hydrogen and release heat to preheat an electric pile, the engine heating time is 1-10 min, and the temperature of the electric pile is increased to 310-340 k; in the normal operation stage, the stack waste heat is used for driving the solid hydrogen storage auxiliary heat source device to absorb heat and release hydrogen and supply hydrogen to the stack, and external heat supply is not needed; in the shutdown stage, high-pressure hydrogen is introduced again to enable the solid hydrogen storage auxiliary heat source device to absorb hydrogen and release heat, residual water vapor blowing and freezing prevention are carried out on the galvanic pile for 0.5-5 min, and the solid hydrogen storage auxiliary heat source device can be widely applied to fuel cell vehicles, engineering machinery, ships and fixed power stations.

The utility model provides a multi-stage heterogeneous turbine coupling type composite cascade power generation system which comprises a low-temperature preheater, a medium-temperature evaporator, a high-temperature heat absorber, a high-pressure radial turbine, a generator I, a low-pressure axial turbine, a generator II, a working medium pump I, a gas-liquid separator, a condenser, a working medium pump II and working medium pipelines among all the components. High-pressure supercritical heat absorption and low-pressure subcritical heat absorption of a working medium are coupled to form a dual-pressure heat absorption organic Rankine cycle, the design of coupling multi-stage heterogeneous turbines is adopted in the expansion power generation process of the system, and higher expansion efficiency can be achieved through all-stage cooperative expansion, so that the working efficiency and the heat utilization rate of the system are effectively improved; and efficient gradient utilization of medium and low temperature heat energy is facilitated.