216results about How to "Reduce heat transfer efficiency" patented technology

The invention relates to regenerated cellulose fiber as well as a preparation method and application thereof. Comprising the following steps: dissolving a cellulose raw material in a solvent; adding a pore-forming agent, a dispersing agent and a cross-linking agent, mixing, and carrying out vacuum defoaming; spinning: enabling the stock solution trickles to sequentially pass through a first coagulating bath, a second coagulating bath and a third coagulating bath; the first coagulating bath is an acidic solution, so that a hollow structure is formed in the fiber; forming a nano-scale pore structure on the outer layer of the fiber in the second coagulating bath; the acid introduced by the first coagulating bath and the solvent introduced by the second coagulating bath are replaced by the third coagulating bath through solvent exchange, and meanwhile, the fibers are gelatinized to form a three-dimensional network structure; and drafting, drying, curling and winding the nascent cellulose fiber to obtain the regenerated cellulose fiber. The technical problem to be solved is how to enable the regenerated cellulose fiber to have a unique structure of internal hollow macropores and external nanoscale pores, and improve the thermal insulation performance, air permeability and hygroscopicity of the fiber. The mechanical property is excellent, the preparation method is simple, and the cost is low.

The utility model relates to a heat exchange device, a robot heat management system and a robot, the heat exchange device comprises a sealing sleeve, a partition plate, a third valve, a piston, a driving element, a first valve, a second valve and a controller, the sealing sleeve is provided with a sealing cavity, the partition plate divides the sealing cavity into a liquid storage cavity and a plurality of liquid separation cavities, and a power element is immersed in a refrigerant of the liquid storage cavity; a piston is correspondingly arranged in each liquid separation cavity, each liquid separation cavity is divided into a gasification cavity and a compression cavity by the corresponding piston, the third valves are installed on the partition plate, and the liquid storage cavity can communicate with the corresponding gasification cavities through the corresponding third valves. The liquid storage cavity is provided with a liquid inlet, each gasification cavity is correspondingly provided with an air outlet, the liquid inlet is provided with a first valve, and each air outlet is correspondingly provided with a second valve. According to the heat exchange device, the robot heat management system and the robot, the problems that a heat management system is large in size and low in cooling efficiency are solved.

The invention discloses an ultra-low energy consumption assembly type heat preservation structure integrated system, and relates to the technical field of heat preservation structures, a protective inner wall body is installed in an installation outer frame in an embedded installation mode, and a protective outer wall body is fixedly installed at the position, corresponding to the interior of the protective inner wall body, of one side of the protective inner wall body; an internal heat preservation inner box is installed in the protection inner wall body in an embedded mode, and a top installation air box is fixedly connected to the position, corresponding to the interior of the protection inner wall body, of the middle of the top end of the internal heat preservation inner box. The temperature in the heat preservation space can be continuously kept within a proper range, then the heat preservation efficiency of the heat preservation structure is effectively improved, heat conduction oil at the bottom of the bottom circulating liquid box can be heated in an auxiliary mode through the electric heating inner pipe when the temperature in the heat preservation space is low, and then the function of the heat preservation structure is effectively expanded. The using effect of the heat preservation structure is improved, and the using energy consumption of the heat preservation structure is reduced.

The utility model discloses a sintering tail gas waste heat utilization device, which belongs to the technical field of waste heat utilization and comprises a heat exchange box, support legs are symmetrically and fixedly connected to four corners of the bottom of the heat exchange box, and a box cover is mounted at an opening in the top of the heat exchange box; according to the device, sintering tail gas enters the heat exchange box through the first tail gas pipe and then is exhausted from the second tail gas pipe after passing through the heat exchange pipe, meanwhile, fresh air passes through the interior of the heat exchange box through the first fresh air pipe and the second fresh air pipe, heat exchange is conducted on the tail gas and the fresh air through the heat exchange pipe, and the fresh air is heated through the tail gas; and when the tail gas flows in the heat exchange pipe, the fan blades are driven to rotate, the fan blades drive the scraping plate to rotate through the rotating shaft, smoke dust attached to the inner wall of the heat exchange pipe is cleaned through the scraping plate, and the situation that the smoke dust is attached to the inner wall of the heat exchange pipe, and consequently the heat exchange efficiency of the heat exchange pipe is reduced is avoided.

The invention discloses aluminum profile discharging equipment capable of recycling heat, and relates to the technical field of aluminum profile discharging equipment.The aluminum profile discharging equipment comprises a heat exchange pool, a partition plate is fixedly connected to the inner wall of the middle of the heat exchange pool, an extrusion die is installed on the outer surface of one side of the heat exchange pool, and a booster pump is installed on the portion, close to the lower portion of the extrusion die, of the heat exchange pool; the transmission shafts are evenly arranged on the portion, close to the upper portion of the partition plate, of the middle of the heat exchange pool, the height of the transmission shafts can be adjusted in the heat exchange pool by manually rotating the adjusting disc through an operator by adjusting the height of the transmission shafts, and adjustment can be flexibly conducted according to the height of an aluminum profile extruded by a mold or the height of the liquid level of cooling liquid; the aluminum profile conveying system has the advantages that the aluminum profile conveying system is simple in structure and convenient to use, appropriate gaps between the aluminum profile and a cooling bed or other parts in the conveying process are guaranteed, unnecessary collision and friction are avoided, the soaking depth of the aluminum profile in cooling liquid can be optimized by adjusting the height of the cooling bed conveying system, the aluminum profile can be cooled at different positions, and therefore the cooling effect is improved.

The invention relates to the technical field of metallurgy, in particular to a method for extracting lithium through microwave acidification roasting and mechanical force ball milling leaching. According to the method for extracting lithium through microwave acidification roasting and mechanical force ball-milling leaching, microwave energy can be used for assisting calcination transformation of spodumene, and microwave energy is used for roasting an acid leaching material, so that the calcination effect is rapidly and efficiently achieved, and the use amount of sulfuric acid and calcination energy consumption are reduced. And a planetary ball mill is used for performing mechanical ball milling and water leaching on the caked roasted material after acid leaching and calcination, so that the water leaching efficiency is improved, and the lithium extraction rate is improved.

The invention discloses an energy-saving and environment-friendly waste heat recovery type heat exchange system, and relates to the technical field of heat exchange, a heat-insulation shell is provided with a heat exchange dust removal assembly, the outer side of a heat exchange water pipe assembly is uniformly sleeved with fixed heat exchange sheets, and the side, close to the fixed heat exchange sheets, of a movable heat exchange sheet is fixedly clamped with a scraper; the electric push rod pushes the sliding block to slide along the sliding rail, the scraping plate can scrape off dust adhering between the fixed heat exchange pieces, the movable sleeve pushes the fixed lead screw to move upwards, the movable lead screw can move upwards, the movable lead screw can move upwards, the movable lead screw can move upwards, and therefore the dust can be removed, and the dust can be removed. The protruding plates and the movable heat exchange pieces which are connected with the lifting plates are pushed to penetrate through the guide scraping holes, the scraping plates penetrate through the scraping plate holes, the movable heat exchange pieces are also cleaned, cleaning is easy while the large heat exchange area of the internal structure is guaranteed, the heat exchange efficiency is guaranteed, and the cleaning difficulty is greatly reduced.

The invention relates to fireproof and heat-insulating glass and a preparation process thereof, and relates to the field of fireproof and heat-insulating materials, the fireproof and heat-insulating glass comprises a heat-insulating film layer I, a fireproof gel layer I, a glass substrate, a fireproof gel layer II and a heat-insulating film layer II, the fireproof gel layer I and the fireproof gel layer II are prepared by adopting a mixed gel solution, the mixed gel solution is prepared from the following raw materials in parts by mass: 80 to 100 parts of bi-crosslinking gel monomer, 5 to 10 parts of crosslinking agent, 20 to 30 parts of composite flame retardant and 1 to 3 parts of initiator. The preparation process comprises the following steps: preparing a mixed gel solution, preparing the fireproof gel layer I and the fireproof gel layer II on the surface of the glass substrate, hot-pressing and laminating the heat insulation film layer I to the surface of the fireproof gel layer I, and hot-pressing and laminating the heat insulation film layer II to the surface of the fireproof gel layer II to obtain the fireproof heat insulation glass. The fireproof and heat-insulating glass has the effect of improving the interlayer binding force of the fireproof and heat-insulating glass, the stability can be improved, and the fireproof and heat-insulating performance is further improved.

The invention provides a photo-thermal nanoparticle, a photo-thermal self-driven hydrophobic anti-icing coating and a preparation method and application thereof, and belongs to the technical field of hydrophobic anti-icing materials. The invention provides a preparation method of photo-thermal nano-particles, which comprises the following steps: mixing a nano-material and tetraethoxysilane under an alkaline condition for hydrolysis, and coating the surface of the nano-material with a silicon dioxide shell to obtain coated nano-particles; and mixing the coated nanoparticles with a silane coupling agent, and carrying out a grafting reaction to obtain the photo-thermal nanoparticles. The preparation method comprises the following steps: by taking a nano material as a carrier, generating a silicon dioxide shell on the surface of the nano material through modification, and then modifying the silicon dioxide shell (carrying out grafting reaction), so that the silicon dioxide shell is grafted with a silane group, and the prepared photo-thermal nano particle has high sunlight absorptivity and super-hydrophobic and super-oleophobic characteristics. The photo-thermal self-driven hydrophobic anti-icing coating is prepared by using the photo-thermal nanoparticles as a main filler and coupling a high-hardness film-forming substance and a related auxiliary agent.

The utility model discloses a supporting device for a tungsten cylinder crucible of a sapphire crystal growth furnace, relates to the technical field of spar forming equipment, and aims to provide the supporting device for the tungsten cylinder crucible of the sapphire crystal growth furnace, which can lift the crucible and is convenient for taking, placing, feeding and discharging the crucible, and has the technical key points that the supporting device comprises a supporting frame, and a furnace body is arranged on the supporting frame; a cover plate is arranged at the top of the furnace body, a vacuumizing pipe is arranged on the side face of the furnace body, a lifting component is arranged on the supporting frame, the top end of the lifting component extends into the furnace body, and a movable plate is arranged at the top end of the lifting component. The threaded telescopic rod jacks upwards and drives the movable plate to move upwards, and the movable plate bears the tungsten crucible and drives the tungsten crucible to jack upwards, so that the tungsten crucible moves to the position of the opening in the upper portion of the furnace body, the purpose of jacking the tungsten crucible is achieved, and taking, placing, feeding and discharging of the tungsten crucible are facilitated.

The utility model discloses a top-air-out energy storage container which comprises a container body, a battery containing bin and a liquid cooling containing bin, the container body is divided into the battery containing bin and the liquid cooling containing bin, and the liquid cooling containing bin is located at the end in the length direction of the container body; the plurality of energy storage batteries are accommodated in the battery accommodating cabin; the liquid cooling assembly comprises a liquid cooling heat exchanger and a liquid cooling pipeline; the liquid cooling heat exchanger is arranged in the liquid cooling accommodating bin and is connected to each energy storage battery through a liquid cooling pipeline; the liquid cooling heat exchanger dissipates heat in an air cooling mode, air enters from the side portion of the liquid cooling containing bin and exits from the top of the liquid cooling containing bin, and the air inlet position of the liquid cooling heat exchanger is the end of the box body in the length direction. The top-air-out energy storage container can solve the problem that the liquid cooling heat exchanger repeatedly sucks out air with the high temperature, and the heat exchange efficiency is improved.

The utility model provides a device and a rectifying tower for continuous rectification purification of sulphur, the device comprises a first preheater, a rectifying tower, a condenser and a vacuum unit, the first preheater is used for preheating crude liquid sulphur, the temperature of the crude liquid sulphur is preheated to 280-380 DEG C, the rectifying tower comprises a tower body, and the condenser is arranged in the tower body. The tower body sequentially comprises a tower top, a rectifying section, a stripping section and a tower kettle from top to bottom, preheated crude liquid sulfur enters the rectifying tower through a feeding hole, and the rectifying section is provided with a side line extraction hole; the condenser is communicated with the gas phase outlet to condense light components rich in gas sulfur, condensate rich in liquid sulfur obtained after condensation of the condenser enters the rectifying section through the reflux inlet, the cooling medium is 100-150 DEG C, and the condensate rich in liquid sulfur is output by the condenser; and the vacuum unit is used for providing a vacuum environment of-80 to-95 kpa for the rectifying tower.

The invention discloses a preparation method of a porous fiber with a nano cellulose fibril stable bubble structure. Comprising the following steps: adding a nanocellulose fibril dispersion liquid and a foaming aid into a polymer solution, mixing, and dispersing the mixed solution to obtain a spinning solution; injecting gas into the spinning solution, and stirring to obtain a bubble type spinning solution; the bubble type spinning solution is subjected to wet spinning to obtain the porous fiber. The nanocellulose fibrils have a diameter of 10 nm or less and a length of 500 nm or more. The porous fiber prepared by the method provided by the invention has an elliptical internal closed-pore structure and high strength. Compared with a traditional solid fiber, the porous fiber shows low volume density and heat conduction efficiency due to the existence of an internal closed-pore structure, so that the thermal insulation performance is better, and the internal closed-pore structure provides more possibilities for functional modification such as phase change capsule coating, nano-particle loading and medicine loading.

The utility model belongs to the technical field of oil-gas separation, and particularly relates to an oil-gas separation and recovery device which comprises a venturi ejector, a high-pressure gas source, a cold air source and a recovery component, and the venturi ejector is provided with an oil steam inlet, a high-pressure gas inlet, a cold air inlet and an output port. The high-pressure gas inlet and the output port are oppositely formed in the two ends of the Venturi ejector, the oil steam inlet and the cold air inlet are formed in the side, close to the high-pressure gas inlet, of the throat pipe, and oil steam, high-pressure gas and cold air are introduced into the Venturi ejector through pipelines. The venturi ejector is connected with an output pipeline at an output port of the venturi ejector, and the recovery assembly is arranged on the output pipeline. High-pressure gas is introduced into the Venturi ejector, negative pressure is generated in the Venturi ejector to suck oil steam and cold air, the oil steam and the cold air are fully mixed at the throat pipe, the condensation phase change effect of an oil-gas mixture in the throat pipe and a follow-up pipeline is improved, and condensed oil drops are collected through the recovery assembly.

The present invention provides a preparation mold and a preparation method for a sealing cover for mixing a sample fluid, and relates to the technical field of preparation of a sealing cover in a medical in vitro diagnostic device. The preparation mold comprises an upper mold, a lower mold, an upper insert pin and a lower insert pin. The upper mold is arranged above a cover body, and a pouring channel is arranged on the upper mold; the lower mold is arranged below the cover body, and a pouring cavity for pouring a sealing soft glue liquid is formed between the lower mold and the upper mold; the bottom end of the upper insert pin abuts against the upper surface of a film on the cover body; the top end of the lower insert pin abuts against the lower surface of the film. The present invention can cooperate with the cover body to form a pouring cavity by arranging an upper mold and a lower mold. After pouring the sealing soft glue liquid into the pouring cavity, the cooled sealing soft glue seals and fixes the film on the cover body, so as to achieve the purpose of simultaneously completing the connection between the film and the cover body and the connection between the sealing soft glue and the cover body, so that the overall process from fixing the film on the sealing cover to connecting the sealing cover with the air and liquid path interface is significantly shortened, and the cost is correspondingly reduced.

The invention relates to the technical field of distillation towers, and discloses a gas-phase feed distillation tower for ethylene carbonate, comprising a distillation tower body, wherein a heat exchanger is connected on the left side of the distillation tower body, wherein the heat exchanger comprises a heat exchange tank, a feed tank is fixed on the left side of the heat exchange tank, a feed port is fixed through the left side of the feed tank, and an inner tube is integrally formed on the right side of the heat exchange tank. When the invention is used, a gas-phase material is driven by an external device to enter the feed tank, and drives a rotating wheel to rotate, and a pipe sleeve and a spiral heat exchange plate are reciprocated by two incomplete gears, a gear three, a rotating rod one, a gear two, and a plurality of gears one in sequence, thereby increasing the fluidity and mixing degree of water, making the heat more evenly distributed in the entire water body, reducing the temperature gradient, and improving the heat conduction efficiency. The agitated water flow can reduce the formation of scale and sediment, and prevent the scale and sediment from reducing the heat transfer efficiency of the heat exchanger.

The invention provides a vertical power module heat dissipation device and method and an aircraft, and belongs to the technical field of aircrafts, and the heat dissipation device comprises a heat exchanger fairing and a heat exchanger; the heat exchanger fairing is in a streamline shape with two sharp ends and a wide middle, the two ends of the heat exchanger fairing are fixedly arranged on the power arm body, and heat exchanger heat dissipation openings are formed in the top of the heat exchanger fairing and located below the forward-rotating propeller and the reverse-rotating propeller. Driving motor modules of the forward-rotating propellers and the reverse-rotating propellers are located in the heat exchanger fairing, and heat exchanger heat dissipation channels are formed between the inner side wall of the heat exchanger fairing and the two sides of the top of the power arm body; the heat exchanger is arranged in the heat exchanger fairing, and cooling fins of the heat exchanger are arranged at heat dissipation openings of the heat exchanger. And a hot liquid inlet and a cold liquid outlet of the heat exchanger are respectively connected with a cooling liquid outlet pipe and a cooling liquid inlet pipe of the driving motor module. The problem that in the prior art, a heat dissipation structure is arranged outside a power arm, and flight resistance is caused to cruise flight of an aircraft can be solved.

The invention discloses a partition-optimized 0.1-0.4mm ultra-thin VC and a preparation method thereof, comprising an upper cover plate and a lower cover plate, wherein the upper cover plate is welded to the lower cover plate; the upper cover plate and the lower cover plate both comprise an evaporation section, an insulation section and a condensation section; the surface of the evaporation section of the upper cover plate is set as a super-hydrophilic cavity-shaped micro-nano structure, the surface of the insulation section is set as a super-hydrophilic equal-width groove micro-nano structure, and the surface of the condensation section is set as a super-hydrophobic conical micro-nano structure; the surface of the evaporation section region of the lower cover plate is set as a super-hydrophilic conical micro-nano structure, the surface of the insulation section region is set as a super-hydrophilic cactus-like wedge-shaped groove micro-nano structure, and the surface of the condensation section region is set as a super-hydrophilic conical micro-nano structure; the application also discloses a preparation method of the ultra-thin VC. The invention can not only optimize the vapor cavity structure and liquid cavity structure and volume distribution inside the heat pipe, but also ensure its good capillary water absorption performance and low water resistance and thermal resistance.

The invention discloses an efficient compressed air heat and energy storage system based on ultra-deep salt cavern air storage, and belongs to the technical field of compressed air heat and energy storage. Comprising a compressor, an expansion unit, a heat exchange module, an ultra-deep salt cavern air storage tank and a heat storage device, wherein the compressor is used for compressing air into high-pressure air; the expansion unit is used for expanding the high-pressure air to generate power; the heat exchange module is used for recovering and releasing heat in the air compression and expansion process; according to the ultra-deep salt cavern compressed air energy storage system, the ultra-deep salt cavern serves as an air storage device, and large-scale and low-cost compressed air energy storage is achieved; and through the application of an efficient adiabatic compression technology and a high-temperature heat storage material, the charging and discharging efficiency of the system is improved, and the energy loss is reduced.

The embodiment of the invention provides an equipment self-cleaning control method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring a startup filth blockage coefficient and a startup environment temperature corresponding to target equipment; correcting the startup filth blockage coefficient based on a target temperature difference value corresponding to the startup environment temperature and the equipment stable temperature to obtain a target filth blockage coefficient; the equipment stable temperature is the temperature corresponding to the target equipment in a stable operation state; and under the condition that the target filth blockage coefficient is larger than or equal to a preset threshold value, the target equipment is controlled to execute self-cleaning operation. Therefore, when the target equipment is in different placement environments, self-cleaning can be accurately and timely carried out, the influence that the heat exchange efficiency of the target equipment is reduced and a refrigerant cannot be fully liquefied due to filth blockage of a condenser is avoided, the heat exchange efficiency of the target equipment and the liquefaction effect of the refrigerant are ensured, and the service life of the target equipment is prolonged. And the refrigeration effect of the air conditioner is improved to a certain extent.

This utility model discloses a scale removal device for plate heat exchangers, relating to the technical field of plate heat exchangers. It includes a fixed clamping plate, a fixed guide rod fixedly connected to the lower right side of the clamping plate, several plates slidably connected to the upper side of the guide rod, and fixed plates fixedly connected to the upper and lower right ends of the plates. Telescopic rods are fixedly connected to the inner sides of both fixed plates, and lifting plates are fixedly connected to the ends of the two telescopic rods. Springs are sleeved on the surfaces of the telescopic rods. Scrapers are fixedly connected to the middle positions of both sides of the lifting plate, and trapezoidal frames are fixedly connected to the upper and lower ends of both sides of the lifting plate. A fixed brush is fixedly connected to the outer end of the trapezoidal frame away from the lifting plate. This utility model, by incorporating a fixed plate, telescopic rods, lifting plate, springs, scrapers, a fixed pipe, a second solenoid valve, a fixed brush, and a pressurizing pipe, avoids disassembling the plates, effectively reducing workload, and simultaneously effectively removing deposited scale.

The invention belongs to the technical field of polyacrylate adhesives, and particularly discloses a device for synthesizing a high-molecular-weight polyacrylate adhesive, which comprises a kettle body, a stirring shaft cooling system, a polymerization kettle cooling system and a heating and cooling integrated system, the kettle body and stirring shaft cooling system comprises a polymerization kettle body, a stirring paddle arranged in the polymerization kettle body and a stirring shaft temperature control system arranged above the polymerization kettle body, the polymerization kettle cooling system and the heating and cooling integrated system are both arranged outside the polymerization kettle body, the polymerization kettle cooling system is used for cooling the polymerization kettle body, and the heating and cooling integrated system is used for heating and cooling the polymerization kettle body. And the heating and cooling integrated system is used for heating or cooling the polymerization kettle body. According to the device for synthesizing the high-molecular-weight polyacrylate adhesive, the reaction process is more stable, the molecular weight of synthesized polyacrylate is high, the molecular weight distribution is narrow, and a polymerization method is relatively simple to implement.

The application discloses a hot-press bonding head and a bonding device, relates to the technical field of chip bonding, and aims to solve the problem that the upper and lower surfaces of an existing liquid cooling plate have a significant temperature difference, which easily causes thermal bending deformation, thereby affecting bonding precision and quality. The hot-press bonding head comprises a supporting base, a liquid cooling plate is arranged on one side of the supporting base, a cooling flow channel is arranged in the liquid cooling plate, a heating disc is arranged on the side of the liquid cooling plate opposite to the supporting base, and the liquid supply pipeline and the gas supply pipeline of a heat exchange system are selectively in fluid communication with the inlet of the cooling flow channel. In the case that the heating disc is heated, the gas supply pipeline is in fluid communication with the inlet of the cooling flow channel, so that the gas is continuously supplied into the cooling flow channel. In the case that the heating disc stops heating, the liquid supply pipeline is in fluid communication with the inlet of the cooling flow channel, so that the cooling liquid is continuously supplied into the cooling flow channel. The application is used for reducing the risk of liquid cooling plate thermal bending deformation caused by the inconsistent temperature rise of the upper and lower surfaces of the liquid cooling plate.

The invention discloses a coal gangue and coal slime comprehensive utilization solid waste treatment machine and a using method, and relates to the technical field of solid waste treatments.The coal gangue and coal slime comprehensive utilization solid waste treatment machine comprises an incinerator, a feeding pipe is fixedly installed on the outer wall of the incinerator, a smashing device is fixedly installed on the surface of the feeding pipe, and a smoke exhaust pipe is fixedly installed on the incinerator; a filter screen is arranged on the inner wall of the smoke exhaust pipe; the anti-adhesion device is arranged on the inner wall of the incinerator, the anti-adhesion device comprises a driving fan, a reciprocating lead screw, a stirring plate, a threaded block, a fixing rod, a scraping plate, a connecting frame, a fixing plate and a triangular block, and the reciprocating lead screw can drive the threaded block to reciprocate up and down in the rotating process; a threaded block reciprocates up and down to drive a fixing rod to reciprocate up and down, coal ash attached to the inner wall of the incinerator is scraped through vertical reciprocating motion of a scraping plate, and the situation that a coal ash layer forms a thermal insulation layer, the heat conduction efficiency in the incinerator is reduced, and then generation of heat energy is affected is prevented.

The invention discloses a refrigerant dynamic charging process based on complete machine simulation operation, and belongs to the technical field of air conditioners and heat pumps. The problem that existing refrigerant charging depends on a static target value and cannot adapt to system individual differences and working condition changes in a self-adaption mode is solved. According to the process, a digital twinborn simulation model of a to-be-charged air conditioning system is constructed, the system is started to operate under a preset simulation working condition, and a first operation parameter is collected to initialize and calibrate the model; dynamically filling the refrigerant according to a preset step length, continuously collecting a real-time second operation parameter, and feeding the real-time second operation parameter back to the model; on the basis of real-time data, the model performs online fitting on a changing curve of parameters such as the supercooling degree and the superheat degree along with the charging amount, and predicts the refrigerant amount when the energy efficiency ratio of the system reaches the optimal as the optimal charging target; and when the parameters collected in real time and the extreme value region predicted by the model converge, it is judged that filling is completed. According to the system and the method, 'tailoring 'type dynamic accurate charging aiming at each specific air conditioning system is realized, and the charging precision and the system operation energy efficiency are remarkably improved.

The utility model discloses a fireproof lock box, and belongs to the technical field of fire exit doors, the fireproof lock box comprises a shell mechanism, a front plate mechanism is mounted in front of the shell mechanism, the upper end of the front plate mechanism is in threaded connection with a driving mechanism, the driving mechanism is rotatably connected with the shell mechanism, and the driving mechanism penetrates through the front plate mechanism and the shell mechanism; the improved fireproof lock box comprises a shell mechanism, a lock body mechanism is installed in the shell mechanism, four guide mechanisms are arranged in the shell mechanism and located on the periphery of the lock body mechanism, the front ends of the guide mechanisms and the front end of the shell mechanism are located on the same vertical plane, and the improved fireproof lock box and the lock body mechanism do not make direct contact with a counter-fire face door plate body. The baffle disc can be used for preventing external airflow from making contact with the lock head, so that the heat conduction efficiency is reduced, operation is easy when the fireproof lock box is used, and meanwhile the fireproof lock box provides a tight protection space for the lock body.

The utility model discloses an air-cooled cooking utensil which comprises a pot body and a pot cover covering the pot body, the pot body comprises an outer pot and an inner container arranged in the outer pot, a cooling fan is arranged on the side wall of the pot body, and a food amount mark is arranged on the side wall of the inner container. The food quantity mark comprises a minimum marking line, a maximum marking line and a median line located between the maximum marking line and the minimum marking line, and at least part of the area, projected towards the inner container, of the air outlet of the cooling fan is located above the median line so as to blow air flow to the area above the median line. In the pressure reduction stage of the cooking process, part of air flow blown out by the cooling fan flows towards the area above food in the inner container, so that the air flow preferentially makes contact with the area, above the food materials, of the inner container for cooling, and an original heat transfer route is changed from water vapor in the inner container to the food in the inner container to the side wall of the inner container to cold air. And water vapor in the inner container, the side wall of the inner container and cold air are adjusted, so that a heat transfer path is shortened, the temperature of gas in the inner container can be quickly reduced, and quick pressure relief is realized.

The invention discloses a preparation method for controlling cracks of alloy steel produced on a CSP production line, and belongs to the technical field of steelmaking continuous casting. The alloy steel is poured through a CSP funnel type crystallizer, the casting speed ranges from 4.0 m / mi < n > to 5.0 m / mi < n >, and the alloy steel comprises, by mass, 0.06%-0.10% of T , 0.2%-0.4% of Si, 0.5%-1.8% of Mn, smaller than or equal to 0.8% of Cr, smaller than or equal to 0.5% of N , smaller than or equal to 0.7% of Cu, smaller than or equal to 0.06% of Nb, smaller than or equal to 0.2% of V and smaller than or equal to 0.1% of Mo. Molten steel components can relate to two or more combinations of the alloy elements, and the mass fraction of the alloy is larger than or equal to 1.6%. And casting powder matched with alloy components and casting speed is adopted. By adopting suitable casting powder and crystallizer parameter control, the quality defects such as edge cracks and longitudinal cracks of the casting blank are effectively avoided, the continuous casting process is ensured to be smooth, and the casting blank with good quality is obtained.

The utility model belongs to heat exchange equipment technical field, specifically, relate to a detachable heat exchanger. Detachable heat exchanger includes the pipe box, integral double tube plate and casing by detachable mode coaxial connection in proper order, be provided with U -shaped heat exchange pipe in casing, both ends of U -shaped heat exchange pipe all pass through integral double tube plate and with the inner chamber of pipe box is connected.

The utility model provides a battery pack which comprises a battery pack and a box body, the box body comprises a bottom plate, the battery pack is arranged on the bottom plate, the battery pack at least comprises a first battery row and a second battery row which are arranged in the direction perpendicular to the bottom plate, and each of the first battery row and the second battery row at least comprises two stacked cylindrical batteries. The stacking direction of the cylindrical batteries is perpendicular to the axial direction of the cylindrical batteries; a partition plate is arranged between the first battery row and the second battery row, the first battery row is arranged at the upper part of the partition plate, and the second battery row is arranged at the lower part of the partition plate; a gap is formed between the side wall of the cylindrical battery arranged at the end of the second battery row and the box body, and a heat insulation piece is further arranged in the gap and attached to the side wall of the cylindrical battery arranged at the end of the second battery row. The battery pack can keep the temperature of the battery pack stable, and the overall service life of the battery pack is prolonged.