1324 results about "Heat recirculation" patented technology

An aqueous stream cleaning system including a circulation pump to receive a waste fluid and / or a concentrated liquid bottoms stream, and expel a circulation stream. The aqueous stream cleaning system can also include a primary heat exchanger to receive the circulation stream from the circulation pump. The primary heat exchanger can have a plurality of heat exchange plates that define an internal surface area for heat transfer from a distillate stream to the circulation stream to produce a cooled distillate stream and a heated circulation stream. The plurality of heat exchange plates can be spaced to facilitate free flow of solids in the circulation stream between the plurality of heat exchange plates. A mass flow rate and pressure of the circulation stream can be configured to minimize build-up of solids in the primary heat exchanger. The aqueous stream cleaning system can further include an evaporation unit to receive the heated circulation stream from the primary heat exchanger. The distillate stream is formed when steam in the heated circulation stream evaporates in the evaporation unit, and the concentrated liquid bottoms stream is formed from a portion of the heated circulation stream that does not evaporate.

The invention belongs to the technical field of refrigerants, and provides a mixed refrigerant for replacing R290 and a preparation method and application thereof, the mixed refrigerant comprises a first component, a second component and a third component; the first component is trans-1, 2-difluoroethylene, the second component is 2, 3, 3, 3-tetrafluoropropene, and the third component is trifluoromethyl methyl ether; compared with R290 refrigerants in the prior art, the mixed refrigerant has the advantages that flammable and explosive components do not exist, and high-risk combustible gas clusters cannot be formed due to density layering after leakage, so that the mixed refrigerant has high safety performance, and the safety level can be not lower than A2L; the mixed refrigerant has the environment-friendly characteristic of low GWP, the GWP is smaller than or equal to 150, and the environment-friendly requirement is met; the thermophysical property and the refrigeration and / or heating cycle performance of the mixed refrigerant are similar to or better than those of R290; the mixed refrigerant can be used for directly replacing an R290 refrigerant.

The invention provides a dynamic diversion system of a homogenizing furnace, and relates to the field of industrial heat treatment equipment. The dynamic flow guide system of the homogenizing furnace comprises an outer wall, a furnace body, a hearth, a high-heat circulating fan and a flow guide cover body, and the furnace body is arranged in the outer wall. According to the invention, temperature data of multiple areas in the hearth are collected in real time through a temperature sensor, and in combination with closed-loop control of a controller on a first positive and negative motor, dynamic adjustment of the rotation angle of a flow guide plate and mechanism design of an eccentric rotating shaft and a movable groove, rotation motion of the first positive and negative motor is converted into multi-angle swing of the flow guide plate; the dynamic deflection of the flow guide plate can respond to the change of a temperature field in real time, the airflow path limitation of fixed flow guide is broken, the stagnant airflow in the right-angle area of the hearth participates in circulation again, and the linkage control logic of the controller, the temperature sensor and the first positive and negative motor realizes the temperature-flow guide angle self-adaptive adjustment; therefore, the dynamic balance of the temperature field can be completed without manual intervention.

The invention relates to a liquid air energy storage and terrestrial heat coordinated underground space air regulation and control system and method. Comprising a first-stage compressor, a second-stage compressor, a third-stage compressor, an expansion refrigerator, a first-stage compression heat exchanger, a second-stage compression heat exchanger, a third-stage compression heat exchanger, a cold box, a separator, a liquid air storage tank, a cryogenic pump, an evaporator, a cold storage circulating pump, a cold storage box, a compression heat exchange circulating pump, a compression heat storage box, a first heater, a second heater and a third heater. The system comprises a first air expander, a second air expander, a third air expander and a generator. The regeneration heater is used for guiding the compression heat generated by the compressor into the regeneration heater for regeneration and / or guiding the geothermal energy output by the geothermal energy output end into the regeneration heater for regeneration; the rotary wheel dehumidification device is used for performing cryogenic drying on the wet air; the fresh air processing unit is composed of a fresh air filter, a regeneration fan, a regeneration filter and an air supply fan.

The invention relates to the technical field of vehicles, and particularly discloses a direct contact type evaporative cooling electric drive system, an electric drive assembly and a vehicle. The electric drive system comprises a motor body, a motor inner cooling assembly, a cooling medium pumping assembly and a cooling medium heat exchange assembly; a phase-changeable cooling medium is directly conveyed into an electric drive and gasified after exchanging heat with a stator and a rotor to be heated, heat dissipation, cooling and liquefaction of the cooling medium are achieved through an external heat exchanger, the liquefied cooling medium is conveyed into a motor shell to be subjected to heat exchange circulation, and under the condition that the size of the electric drive is not increased, the cooling performance can be greatly improved; and the electric drive working performance can be effectively improved.

The invention provides a pot support, and relates to the technical field of gas cooks.The pot support mainly comprises a ring body, and the outer edge of the ring body is higher than the inner edge of the ring body so that a combustion area can be defined; an upper cavity and a lower cavity which are stacked and independent are formed in the ring body; the lower cavity is a closed cavity; an air inlet hole and an air outlet hole which are communicated with the interior and exterior of the upper cavity are formed in the cavity wall of the upper cavity to form a channel for high-temperature gas to flow; the air inlet and the air outlet are arranged away from each other; the air outlets face the through hole in the bottom of the ring body. According to the embodiment provided by the invention, part of generated high-temperature gas is sucked into the upper cavity from the air inlet holes in the high position, the high-temperature gas flows along the upper cavity, heat of the high-temperature gas is conducted through the cavity wall, the temperature of the whole pot support is greatly increased, the heated pot support directly conducts efficient heat conduction heating on a pot, and the heating efficiency is improved. And the high-temperature gas finally flows downwards and flows out from the gas outlet hole, and flows upwards and is sucked into the upper cavity, so that heat circulation is formed, and the overall heat efficiency is remarkably improved.

The utility model provides a liquid carbon dioxide energy storage refrigerating system. The liquid carbon dioxide energy storage refrigerating system comprises an energy storage system, a refrigerating system and a heat circulation system. The energy storage system comprises a low-pressure liquid storage tank, a first throttling pressure reducing valve, a first heat exchanger, a compressor, a second heat exchanger and a high-pressure liquid storage tank which are sequentially connected in a sealed mode. The refrigerating system comprises a high-pressure liquid storage tank, a second throttling pressure reducing valve, a third heat exchanger, a fourth heat exchanger and a low-pressure liquid storage tank which are sequentially connected in a sealed mode. The heat circulation system comprises a cold storage tank, the cold storage tank is coupled with the first heat exchanger through a circulation pipeline, and the cold storage tank is coupled with the fourth heat exchanger through a circulation pipeline. In the low peak period of electricity utilization, the electric energy is stored in the form of high-pressure liquid carbon dioxide. And the liquid carbon dioxide is gasified and cooled through pressure reduction of the second throttling pressure reducing valve so as to provide cold energy. And meanwhile, cold energy generated in the refrigeration process can be stored through the heat circulation system and used for cooling carbon dioxide in the energy storage process.

The utility model discloses a multi-system water chilling unit which comprises at least two heat exchange systems, at least two waterway systems and a combined heat exchanger, and the heat exchange systems can be combined to form or respectively form an independent heat exchange circulation loop by switching the serial or parallel connection state and the opening or closing state of the combined heat exchanger; the water path system can be combined to form or respectively form an independent water circulation loop, so that the heating or refrigerating capacity of the unit is obviously increased; different heat exchange circulation loops are switched and controlled by adjusting refrigerant flowing paths between the multiple heat exchange systems and the combined heat exchanger, and different water circulation loops are switched and controlled by adjusting water medium flowing paths of the multiple water path systems. Therefore, after the water chilling unit is installed, different operation modes can be selected and switched according to different heat or cooling capacity requirements, hot water or cold water with the corresponding capacity and temperature is produced, the heating or cooling capacity of the unit is matched with the actual requirement, the whole equipment or part of elements do not need to be replaced, cost is low, and maintenance is convenient.

The invention provides a porous medium combustor for stable combustion of ultralow-calorific-value gas, belongs to the technical field of combustors, and solves the problems that an existing combustor is low in heat recycling efficiency and air is not fully preheated before entering a combustion area. The combustor comprises a shell, a gradually-shrunk porous medium layer, a stable-combustion porous medium layer, a gradually-expanded porous medium layer, a premixing chamber, a fuel channel and an oxidizing agent channel, and the gradually-shrunk porous medium layer, the stable-combustion porous medium layer and the gradually-expanded porous medium layer are all located in the shell and are sequentially arranged from top to bottom; the premixing chamber is communicated with the lower part of the divergent porous medium layer; an outlet of the fuel channel is communicated with the premixing chamber; the oxidant channel surrounds the stable combustion porous medium layer and the divergent porous medium layer and is spirally arranged on the shell, an inlet of the oxidant channel is located above the stable combustion porous medium layer, and an outlet of the oxidant channel is communicated with the premixing chamber. The combustible limit of the low-heating-value fuel gas can be widened, stable and efficient utilization of the ultralow-heating-value fuel gas is achieved, and the heat recycling efficiency is improved.

The invention discloses a photovoltaic-heat pump cooperative energy storage system defrosting control method, device and system, electronic equipment and a storage medium, the photovoltaic-heat pump cooperative energy storage system comprises a heat storage module, a heat circulation pipeline and a plurality of electric heating modules, and the heat storage module outputs heat energy to an evaporator through the heat circulation pipeline for defrosting. On one hand, the photovoltaic unit supplies power to the electric heating module for defrosting, and the heat storage module outputs heat energy for defrosting, so that the dependence of defrosting on a power grid can be reduced, the supply proportion of the photovoltaic unit in defrosting energy consumption is increased, the electric charge expenditure is saved for a user, the carbon emission is reduced, the peak load of the power grid is relieved, and the energy utilization rate of the photovoltaic unit is increased; partial defrosting can be achieved by supplying power to part of the electric heating modules through the photovoltaic unit, global defrosting is achieved by outputting heat energy through the heat storage module, different defrosting modes are adopted in different frosting states, the energy efficiency of the system is improved, and defrosting can be achieved through the heat storage module when the generating capacity of the photovoltaic unit is low in extreme weather.

The invention provides an electronic-grade hydrofluoric acid rectification heat exchange device, and relates to the field of heat exchange devices.The electronic-grade hydrofluoric acid rectification heat exchange device comprises a cold recovery box, the surface of the cold recovery box is provided with a hot backflow pipe and a hot circulation box, a plurality of mass transfer boxes are arranged above the cold recovery box, a plurality of mass transfer bottles are fixedly connected to the interiors of the mass transfer boxes, and the tops of the mass transfer boxes are fixedly connected with a top plate; a plurality of adjusting holes are uniformly formed in the surface of the top plate, adjusting boxes are arranged in the mass transfer boxes, high-corrosion-resistance air bags are symmetrically arranged on the surfaces of the adjusting boxes, adjusting blocks are arranged in the adjusting boxes, rotating pipes are arranged in the mass transfer bottles, and stirring paddles are arranged on the surfaces of the rotating pipes. The efficiency and the stability of the hydrofluoric acid rectification heat exchange device are improved, the adaptability of the device to the production scale and different raw materials is improved, and the energy consumption is reduced.

The utility model relates to the technical field of acid pickling waste liquid resourceful treatment and regeneration, in particular to a tail gas waste heat utilization system of a mixed acid waste liquid treatment system, which is used for treating mixed acid waste liquid and discharging high-temperature tail gas and comprises a first heat exchanger, a second heat exchanger and a refrigerating mechanism. A first heat exchange circulating water path is arranged between the first heat exchanger and the refrigerating mechanism; the first heat exchanger provides a heat source for the refrigerating mechanism by using tail gas heat and reduces the water temperature of the first heat exchange circulating water path by means of the refrigerating mechanism; a second heat exchange circulating water path is arranged between the second heat exchanger and the refrigerating mechanism. The second heat exchanger is further connected to a circulating pipeline of the mixed acid waste liquid treatment system so as to reduce the temperature of circulating liquid. Through the tail gas waste heat utilization system, flue gas waste heat of the mixed acid waste liquid treatment system is effectively recycled, and energy waste is reduced; and the second heat exchanger reduces the circulating liquid temperature of the mixed acid waste liquid treatment system and improves the oxidation efficiency of the flue gas.

The invention discloses a waste heat heat preservation device for energy storage of an air compressor of a refrigeration station and a heat preservation method of the waste heat heat preservation device, relates to the related field of heat exchangers and aims to solve the problems that when hot air is circulated and output in the prior art, water is heated, the temperature of the hot air is reduced, the temperature difference between the water and the hot air is small, and heat exchange efficiency is low. The temperature of the water body close to the hot air input end is different from that of the water body close to the hot air output end, and waste heat of the air compressor cannot be fully utilized. The waste heat recycling pipeline comprises a first heat exchange circulating pipe, a first air inlet branch pipe is formed in a pipe body of the upper portion of the front end of the first heat exchange circulating pipe, and a first air outlet branch pipe is formed in a pipe body of the upper portion of the rear end of the first heat exchange circulating pipe. The waste heat recycling pipeline further comprises a second heat exchange circulating pipe, a second air inlet branch pipe is formed in a pipe body on the lower portion of the rear end of the second heat exchange circulating pipe, and a second air outlet branch pipe is formed in a pipe body on the lower portion of the front end of the second heat exchange circulating pipe.

The invention discloses a heat pump unit with an energy recovery function, and belongs to the technical field of heat pumps, the heat pump unit comprises a machine shell, a heat circulation mechanism, a fan, a condensation box and a waste heat recovery box are arranged in the machine shell, and a circulation conveying mechanism and a driving mechanism are arranged on one side of the waste heat recovery box; the circulating conveying mechanism comprises a compression box and a piston plate; the driving mechanism comprises a driving motor, a driving shaft, a guide rail and a rotating shaft. By integrating the heat circulation mechanism, the waste heat recycling box and the circulation conveying mechanism, the energy utilization efficiency is remarkably improved, in the operation process of the heat pump unit, the compressor compresses a low-temperature and low-pressure gas-state refrigerant into high-temperature and high-pressure gas, the condenser transmits heat to water in the condensation box, and therefore the heat pump unit is cooled. Meanwhile, a waste heat recovery box further recovers residual heat of the refrigerant, gradient utilization of energy is achieved, a fan enhances air circulation and improves heat exchange efficiency, and a temperature sensor and a controller dynamically adjust system operation parameters to ensure that the temperature of hot water is stable.

The invention belongs to the technical field of hydrogen energy, and particularly relates to a solid hydrogen storage system with two charging and discharging ends and a working method.The solid hydrogen storage system comprises at least two independent solid hydrogen storage units, and each solid hydrogen storage unit independently communicates with an upstream hydrogen supply pipeline through a first valve set and independently communicates with a downstream hydrogen using pipeline through a second valve set; each solid hydrogen storage unit is selectively communicated with the thermal circulation loop or the cold circulation loop through a third valve group; the first valve group, the second valve group and the third valve group are controlled, so that when the upstream hydrogen supply pipeline has a hydrogen supply demand and the downstream hydrogen use pipeline has a hydrogen use demand, the first solid hydrogen storage unit is configured to be in a hydrogen charging mode, and meanwhile, the second solid hydrogen storage unit is configured to be in a hydrogen discharging mode; the solid hydrogen storage unit in the hydrogen charging mode is communicated with the upstream hydrogen supply pipeline and the cold circulation loop for charging hydrogen, and the solid hydrogen storage unit in the hydrogen discharging mode is communicated with the downstream hydrogen supply pipeline and the hot circulation loop for discharging hydrogen.

The invention discloses a carbon capture system based on heat pump heating flash evaporation barren liquor and an operation method of the carbon capture system, and belongs to the field of absorption carbon capture and waste heat utilization. The system comprises an absorption carbon capture unit, a heat pump unit, a flue gas flow channel and a hot water supply circulation flow channel, the absorption carbon capture unit is used for capturing CO2 gas in flue gas, and the heat pump unit is used for recovering flue gas waste heat of the power plant and outputting medium-temperature waste heat to the flash tank to increase the flash steam amount; the flue gas runner is used for introducing high-temperature flue gas into a flue gas inlet in the bottom of the absorption tower after the high-temperature flue gas is sequentially used for heating the generator and the evaporator; and the heat supply circulating water flow channel is used for transferring heat output by the heat pump unit to the flash tank. The heat pump is used for converting the low-temperature waste heat of the flue gas into the latent heat of the steam, the demand quantity of the reboiler for the steam is reduced, the overall energy consumption of a power plant is reduced, and an energy-saving and efficient flue gas trapping technology is provided.

The invention discloses a method suitable for improving the structure uniformity of an AZ-series magnesium alloy manufactured through an electric arc additive. The method comprises the steps that firstly, a hot-rolled AZ31 plate is selected as a base plate; 2, performing three-dimensional modeling and slicing treatment according to a target magnesium alloy workpiece, and designing a deposition path; 3, preheating the substrate, adjusting the distance between the electrode and the substrate, and introducing protective gas; and fourthly, according to the deposition path, electric arc additive manufacturing is conducted in an inner layer rotating deposition mode, and the AZ series magnesium alloy workpiece is obtained. Plasma arc welding is used as a heat source, the preparation speed is high, heat input control is accurate, the arc stiffness is good, splashing is effectively reduced, and the workpiece formability is good; a rotary deposition mode is adopted, thermal circulation is effectively controlled, abnormal structure growth is avoided, meanwhile, the means of interlayer hammering deformation is assisted, a deposition interface is optimized, the obtained AZ series magnesium alloy workpiece is uniform in structure, fine in grain, few in defect and excellent in strength and plasticity, and the process is simple and easy to popularize.

The invention relates to the technical field of steelmaking, and discloses a method for heat recycling of medium-carbon aluminum killed steel casting residual steel slag. According to the thermal recycling method for the medium-carbon aluminum killed steel casting residual steel slag, the continuous casting residual steel slag is recycled on line and recycled for three times. The method is reasonable in design and simple and convenient to operate, and in the production process of the medium-carbon aluminum killed steel, more than 300 kg of molten steel and refining furnace smelting final slag still having the desulfurization capacity are always left at the bottom of a steel ladle after continuous casting pouring is finished; according to a traditional method, the processing cost is high in the treatment process, alloy elements are completely lost in the process of re-smelting in a furnace, and about 10% of iron elements contained in iron-containing material residual tailings are also wasted; compared with other methods, the method has the advantages that the implementation process is not tedious, the casting residual steel slag can be fully recycled under the condition that on-site logistics links are not obviously increased, consumption of alloy and refining slag is reduced, and good economic and social benefits are achieved.

The invention discloses an efficient thermal cycle drying device for producing flaky ammonium bifluoride, and relates to the technical field of ammonium bifluoride production. Comprising a machine body, an exhaust pipe and an air inlet sleeve, a first shell and a second shell are sequentially mounted at the upper end of the machine body from left to right, an air inlet cavity is formed in the bottom of the inner side of the machine body, and a mounting cylinder is connected to the upper end of the air inlet cavity through a spring; through cooperation of a mounting cylinder, a movable cylinder, a scraping plate and a first adjusting assembly, when materials are subjected to traditional one-way vibration blowing heat exchange, the materials are thrown and turned in the other direction to increase the drying uniformity, meanwhile, the air flow pressure of an exhaust hole is correspondingly adjusted, and the heat exchange drying effect is improved; and through cooperation of the movable barrel and the second adjusting assembly, when materials with the large water content and the large feeding amount are dried, the moving speed of the materials is increased, meanwhile, the air flow pressure of the exhaust holes is correspondingly adjusted, and the heat exchange drying effect is improved.

The invention relates to a closed heat exchange circulating water and saline water concentration coupling device and a process thereof, the device comprises a closed circulating water system and a high-salinity water concentration system, and is characterized in that the high-salinity water concentration system is a closed circulating water cooling tower, the closed circulating water cooling tower is of a three-section structure, namely an upper section, a middle section and a lower section, a fan and a sprayer are mounted in the upper section, a straight-section air duct, a second heat exchanger and an air inlet grille are mounted in the middle section, a salt storage water tank is mounted in the lower section, and a closed circulating water system is formed among the second heat exchanger, an external first heat exchanger, a buffer and a circulating water pump. According to the invention, the chlorine salt water needing to be concentrated is evaporated by fully utilizing the characteristics of the circulating water cooling tower and the heat transfer requirement, so that the concentration of 5% chlorine salt water reaches 30% or above, and the concentrated salt water is sold as a byproduct, or is evaporated and crystallized in a multi-effect evaporation device to produce byproduct salt (calcium chloride / sodium chloride industrial salt).

The invention discloses an intelligent control method and system for latent heat defrosting, and particularly relates to the technical field of latent heat defrosting control. The method comprises the following steps that the defrosting starting time is accurately judged by establishing a multi-parameter environment sensing model, and carbon dioxide or Freon or air is selected as a heating medium; latent heat is input into the heat exchange area through the independent heating circulation path; the gravity direction of the heat exchange pipe is dynamically judged according to the platform posture, and the pipe section in the natural frost stripping direction is preferentially heated; an intermittent heating strategy based on thermal modeling is adopted to control energy consumption; when the energy is insufficient, heating is suspended, the state is recorded, and the energy is recovered for subsequent defrosting; according to the method, accurate judgment of defrosting starting, directional and efficient heating control and whole-process closed-loop management are achieved, the energy utilization efficiency, the frost layer stripping effect and the control reliability are remarkably improved, intelligence, self-adaption and restorability are achieved, and the method is suitable for meeting the requirement for stable defrosting in energy-limited and complex-environment scenes such as a high-altitude platform.

The invention relates to the field of grinding equipment, and discloses a self-cooling grinding mechanism of a bean grinder. A water tank is fixedly connected to the outer surface of the water outlet pipe; a connecting pipe is fixedly connected to the lower surface of the water tank; an electromagnetic pump is fixedly connected to the outer surface of the connecting pipe; a water inlet pipe is fixedly connected to the outer surface of the output end of the electromagnetic pump; the outer surface of the water inlet pipe is fixedly connected to the other end of the heat exchange pipe to form circulation, the upper grinding wheel serves as a main part in the grinding period, heat is generated in the grinding period, an inner groove makes full contact with stainless steel of the heat exchange pipe, and cold water is pumped to the water inlet pipe from the water tank through the connecting pipe through the electromagnetic pump. The NTC temperature probe monitors the temperature in real time and is connected with an electronic circuit arranged at the position of the electromagnetic pump to control the working power of the electromagnetic pump and adjust the water flow speed, and then the heat exchange efficiency is adjusted.

The present invention provides a power plant waste heat recovery system and method, which simultaneously recovers a wide range of waste heat from power plants and also implements cascade recycling of waste heat from power plants. The present invention simultaneously recycles all waste heat from thermal power plants, including four types of waste heat: flue gas waste heat, circulating water waste heat, furnace wall waste heat, and slag waste heat. In addition, according to the different characteristics of waste heat, different heat pumps and different heat exchangers are selected to efficiently recover all recoverable waste heat, thereby improving the energy conversion efficiency of the power plant. The present invention designs a cascade recycling of waste heat from power plants, including three recycling methods: a low-pressure steam turbine generator set, a low-boiling-point working fluid generator set, and a heating pipeline. On the one hand, the present invention improves the applicability of the power plant waste heat recovery system, and is applicable to different types of thermal power plants, as well as to the effects of different seasons and environmental temperature factors on various waste heat. On the other hand, by comparing and matching the temperature and pressure set values ​​of the recycling equipment with the measured values, the waste heat is maximized and waste heat is avoided.

According to the transformer cooling system provided by the invention, transformer oil led out from the transformer main body sequentially flows into the circulating oil pump and the Venturi tube through the oil outlet pipe. The circulating oil pump can provide strong power for circulation of the transformer oil, and the Venturi tube enables the transformer oil to be in a turbulent flow state. And then, the transformer oil in the turbulent flow state enters the heat dissipation device, and efficient heat dissipation treatment is carried out. And the transformer oil subjected to heat dissipation stably flows back to the transformer main body through the oil return pipe, so that a complete heat dissipation cycle is formed. In the system, through cooperation of the circulating oil pump and the Venturi tube, the circulating flowing speed of transformer oil is remarkably increased, the transformer oil can pass through the heat dissipation device at a higher speed, a boundary layer between hot oil and the surface of a heat medium channel of the heat dissipation device is effectively damaged, and therefore the heat transfer efficiency is improved, and the heat dissipation efficiency is improved. Therefore, heat can be conducted to the surface of the heat dissipation device more quickly, and the heat dissipation efficiency of the whole heat dissipation system is further improved.

The utility model relates to a triple-cycle high-salinity wastewater low-temperature scraper drying system which comprises a roller scraper dryer, a steam condensation chamber, a condensed water tank and a vacuum pump, the vacuum pump vacuumizes the drying cavity through the condensate water tank and the steam condensation chamber. The first heat exchange cycle is suitable for exchanging heat absorbed by the steam condensation chamber to the third heat exchange cycle; the second heat exchange cycle is suitable for exchanging heat of the third heat exchange cycle to the water jacket; and the heat exchange ends on the two sides of the third heat exchange cycle are connected with the first heat exchange cycle and the second heat exchange cycle correspondingly. The three heat exchange cycles work cooperatively, the heat of the first heat exchange cycle is reduced, the heat provided for the second heat exchange cycle by the third heat exchange cycle is reduced, and the hot water in the second heat exchange cycle can still heat the materials in the drying cavity by exceeding the boiling point rise through the auxiliary heat, so that the low water content of the dry materials is effectively ensured.

The utility model relates to the technical field of chemical production, particularly discloses a turbidity control system for chemical cooling circulating water, and solves the problem that the cooling effect of chemical equipment is finally influenced due to the fact that the circulating water is easily polluted by a chemical cleaning agent or the environment in the process of cooling the chemical equipment by the circulating water for a long time at present. According to the system, a plurality of cut-off control valves are arranged at water inlet and outlet pipelines of a filter, a liquid level meter is additionally arranged at the top of a slurry tank, and a plurality of control valves are arranged between the slurry tank and a press filter, so that circulating water is further filtered through the additional filter when being subjected to conventional cooling heat exchange circulation; the cleanliness of the cooling water entering the circulating water tank is further improved; and the slag slurry water backwashed by the filter is further filtered by the press filter, so that the filtered slag slurry water is pumped into the circulating water tank again, the turbidity of the cooling circulating water is effectively reduced, and the recycling rate of the filtered slag slurry water is improved.

The utility model discloses a liquid air energy storage system coupled with air separation and dry ice preparation, which comprises an air compression liquefaction subsystem, a cold energy gradient utilization subsystem, an air expansion power generation subsystem and a heat storage subsystem, the air compression and liquefaction subsystem, the cold energy gradient utilization subsystem and the expansion power generation subsystem are sequentially connected through a compression and liquefaction pipeline and an expansion power generation pipeline, and the heat storage subsystem is connected with the air compression and liquefaction subsystem and the air expansion power generation subsystem through a heat storage circulation pipeline. The cold energy gradient utilization subsystem is arranged to replace an existing low-temperature cold storage unit, the liquid air energy storage system is coupled with the air separation unit and the dry ice preparation unit, liquid air cold energy gradient utilization is achieved, and meanwhile energy consumption and construction cost of the air separation system are reduced. The power generation stability of the liquid air energy storage system is guaranteed, and the comprehensive efficiency and the environmental protection property of the liquid air energy storage system are improved.

The invention discloses a packaging tunnel furnace convenient to clean, and belongs to the technical field of drying equipment. In order to solve the problems that due to the design of a bottom air duct of an existing tunnel furnace, cleaning and maintenance are complex, and sediment easily causes potential safety hazards, the thermal cycle baking device is integrated at the upper end of equipment and comprises a heat preservation wall, a circulation assembly and an air duct assembly which are detachably connected. The circulation assembly and the air duct assembly of the thermal circulation baking device are integrated at the upper end of the device, the detachable heat preservation wall, the packaging plate and other structures are adopted, a bottom protection assembly does not need to be disassembled during cleaning, the air duct and inner wall sediments can be directly contacted only by disassembling part of modules from the side direction or the upper portion of the device, the shutdown maintenance time is greatly shortened, and the maintenance efficiency is improved. The technical defects that in the prior art, a bottom air channel is complex to disassemble and consumes long time are overcome. The hot air is transversely and parallelly blown to the packaged objects in the carrier through the air guide assembly, the curing and drying uniformity of the packaged objects in the carrier is ensured, and therefore the quality of the packaged objects is improved.

The utility model discloses a refrigeration structure with an anti-deformation pipeline and an ice cream machine using the refrigeration structure. The refrigeration structure comprises a freezing cylinder, a compressor, a heat exchanger, a refrigeration circulating pipeline and a heat exchange circulating pipeline, the compressor is provided with a condensation outlet, a condensation inlet, a heat exchange inlet and a heat exchange outlet; the refrigeration circulation pipeline comprises a capillary tube, a condensation tube and an air return tube which are sequentially communicated; the heat exchange circulation pipeline comprises a cold source input pipe and an exhaust pipe. According to the refrigeration structure, an air return pipe is arranged in a refrigeration circulation pipeline, an exhaust pipe is arranged in a heat exchange circulation pipeline, and a plurality of sections of bent structures are arranged in the air return pipe and the exhaust pipe respectively, so that anti-bending structures are formed. Due to the fact that the air return pipe and the exhaust pipe are of a bent structure, the air return pipe and the exhaust pipe can bear drawing force and deform to a certain degree when vibration occurs in the transportation process or collision and falling occur in the carrying process, and therefore the air return pipe and the exhaust pipe can bear influences caused by vibration, and the problem that the air return pipe and the exhaust pipe are damaged is solved.

The invention belongs to the technical field of salt spray tests, and particularly relates to a test device and method for simulating hot corrosion of an engine turbine blade material, and the method comprises the following steps: after a sample is cleaned and dried, a nozzle is controlled by a mechanical arm to atomize a saturated salt solution, and the saturated salt solution is precisely sputtered to the surface of the sample preheated to 300-500 DEG C to form a uniform salt film; the sample is placed in a heating furnace at the temperature of 600-1000 DEG C to be subjected to heat preservation for 50-55 min and then cooled by compressed air for 5-10 min, and cold and hot circulation A corrosion kinetic curve is drawn based on the unit area weight increment, corrosion products are removed through a molten alkali electrolysis method, and the hot corrosion rate is calculated. The device comprises a groove type test bed with a high-temperature-resistant coating, a slit type nozzle driven by a mechanical arm, an infrared heating device and a cold and hot circulation system. According to the method, the salt film is deposited through precise position control of the mechanical arm, the cold and hot alternating working condition is simulated, the problems that a traditional salt coating method is not uniform and a salt leaching method is distorted in environment are solved by combining corrosion dynamics and microscopic characteristic analysis, and scientific evaluation of the corrosion resistance of the aero-engine blade material is achieved.