30results about How to "Reduce heat transfer" patented technology

The application relates to a dual-phase high-entropy ceramic material for high-temperature thermal barrier coatings and a preparation method thereof, in particular to a dual-phase high-entropy ceramic (La 0.2 Nd 0.2 Gd 0.2 Y 0.2 Ho 0.2 )2Zr2O7 with low thermal conductivity and high thermal expansion coefficient, which is mainly used for thermal isolation, thermal barrier coatings and other applications in high-temperature environments. The application is prepared by adopting a solid-phase reaction sintering process through accurate design of the combination of rare earth elements, forms a stable dual-phase structure, effectively inhibits grain growth through grain boundary pinning, and thus maintains a nanoscale grain structure. Meanwhile, the material can efficiently block heat transfer at high temperatures through optimization of phase proportion, and the thermal expansion characteristics are matched with a metal base layer, effectively avoiding the falling risk caused by the difference in thermal expansion of the two, and thus greatly improving the service life and reliability of the material in a high-temperature environment. The high-entropy ceramic material of the application can be widely applied to fields with high demand for high-temperature thermal isolation in aerospace, aviation, automobile industry and the like, is especially suitable for thermal barrier coatings, high-temperature thermal insulation materials and other high-temperature thermal insulation applications, and has important engineering application value.

The utility model relates to the technical field of box wallboard, disclose a kind of box wallboard structure of high efficiency prevents cold bridge, including refrigeration box, and refrigeration box two sides symmetry are provided with wallboard, and wallboard includes veneer, and fill slot is opened in veneer, and heat preservation board is provided in veneer, and inner layer soft board is provided on veneer, and hollow layer is provided between heat preservation board and inner layer soft board, and hollow layer is filled with argon, and heat insulation in refrigeration box can be realized using heat preservation board, and hollow layer is arranged between inner layer soft board and heat preservation board, when pork impacts inner layer soft board, inner layer soft board will be appropriately deformed, while argon in hollow layer will be compressed, and then the impact force brought by pork impacting inner layer soft board is consumed, while argon is lower than air heat conduction coefficient, to further improve the temperature insulation effect of box wallboard, avoid the heat conduction path at its fracture after heat preservation layer fracture, and then cold bridge appears, improve the refrigeration effect of the pork transported, and guarantee the freshness of pork.

An end cover structure for improving the lifespan of a range hood motor includes a cover body with a heat dissipation hole at its center. A positioning boss and a bearing mounting seat are formed on the inner end face of the cover body, both coaxially aligned with the cover body. The positioning boss is lower than the bearing mounting seat. A bearing mounting sleeve is provided within the bearing mounting seat and is fixedly connected to it. The bearing mounting sleeve has a through hole that aligns with the heat dissipation hole on the cover body. By enlarging the original bearing mounting position on the end cover and adding a bearing mounting sleeve, the bearing is mounted using the bearing mounting sleeve. When the motor heats up, the bearing mounting sleeve reduces heat transfer between the bearing and the end cover, and it also acts as a buffer, preventing deformation of the bearing mounting position in the end cover due to bearing heat. This improves the service life of the end cover and further extends the lifespan of the motor.

This invention discloses a process flow for water injection in a hydrogenation unit. It uses condensate from high-pressure (4.0–3.5 MPa) or medium-pressure steam (1.0–2.0 MPa) as the injection water, continuously injected before the amine salt crystallization temperature along with the reaction effluent or before the high-pressure gas heat exchanger, eliminating the need for a continuous water injection point before the air cooler. Compared with existing technologies, this method offers the following advantages: it minimizes the impact of water injection on the heat exchange of the high-pressure medium, maximizing heat recovery; it avoids the risk of intermittent water injection before conventional heat exchangers; it saves on water injection pipelines and valves before the high-pressure air cooler; and it incidentally recovers the heat from the high-temperature condensate, reducing overall plant energy consumption.

This invention discloses a high-safety, high-energy-density chalcogenide all-solid-state battery and its preparation method, belonging to the field of all-solid-state battery technology. The battery includes a positive electrode, a chalcogenide solid electrolyte layer, and... SnF2‑In The phase change alloy thermal response layer and negative electrode have a thermal response layer thickness of <5μm, coated only on the outer periphery of the battery and the interface between adjacent batteries. Its operating initiation temperature is 50-100℃ higher than the high-temperature, high-pressure sintering temperature of 570℃. This invention achieves a 99.2% volumetric energy density retention rate by precisely defining the coating area, thickness, and temperature matching relationship of the thermal response layer. The early expansion rate of the thermal response layer after sintering is controlled at 4.8%, the probability of preventing thermal runaway chain propagation between adjacent batteries reaches 95.0%, and the thermal conductivity is reduced by 83% compared to structures without a barrier layer. While ensuring composite safety functions, it does not compromise the core commercial advantages of all-solid-state batteries, and has broad industrialization prospects.

This invention belongs to the field of ablation-resistant thermal insulation composite material preparation technology, specifically relating to a polyacrylonitrile-based hollow carbon fiber for thermal protection materials and its preparation method. The invention first pre-oxidizes porous polyacrylonitrile precursor fibers to obtain porous pre-oxidized fibers. Then, phenolic resin is coated onto the surface of the pre-oxidized fibers through solution polymerization. After impregnation in an organosilicon source solution, rapid Joule heating at high temperature deposits both phenolic carbon microspheres with excellent ablation resistance and a silica coating on the fiber surface, forming a unique hollow carbon fiber structure with excellent thermal insulation properties. This solves the problem that polyacrylonitrile-based carbon fibers cannot simultaneously achieve both thermal insulation and ablation resistance. The thermal conductivity of the polyacrylonitrile-based hollow carbon fiber prepared by this method is about 17% lower than that of porous polyacrylonitrile carbon fibers prepared by traditional carbonization methods, making it applicable to the field of integrated ablation-resistant thermal protection materials.

The utility model provides a wall insulation board with a rock wool composite structure, which comprises a rock wool heat insulation component, an inner side carrying component, an outer side shielding component, a bolt connection switching component, an expansion fastening component and a covering decoration component, a rock wool core layer of the wall insulation board is formed by stacking rock wool fibers, and air holes are formed in the rock wool core layer; the inner side lining plate made of the calcium silicate plate is fixed to the rock wool core layer through polyurethane glue, the wall face of the inner side lining plate is provided with an internally-connected grid, the grid is immersed and filled with the bonding layer, it is ensured that the rock wool core layer and the inner side lining plate are tightly combined, the bearing capacity of the whole structure is enhanced, and the service life of the wall is prolonged. The outer side lining plate made of the calcium silicate plate is fixed to the rock wool core layer through epoxy resin glue, the wall face of the outer side lining plate is provided with the externally-connected grids, the bonding layer immerses and fills the grids, the bonding strength of the outer side lining plate and the rock wool core layer is improved, and the rock wool core layer is effectively protected.

This disclosure provides a liquefied gas transport container. The liquefied gas transport container includes a first diaphragm defining a cavity. A first insulating layer is disposed around the first diaphragm. The first insulating layer comprises a first closed-cell insulating material. The first closed-cell insulating material comprises a first synthetic foam. A backing material is disposed around the first insulating layer. A housing is disposed around the backing material.

This invention discloses a waste heat recovery device for flue gas from a thermal oil aluminum melting furnace, relating to the field of baking furnace technology. The device includes a furnace, with a support rod fixedly connected to the outer wall of the furnace and an exhaust pipe fixedly connected to the top of the furnace. A furnace opening and closing door is provided on the front of the exhaust pipe, and a waste heat recovery mechanism is installed inside the exhaust pipe. By setting up the waste heat recovery mechanism, while heat is exchanged through inclined heat-conducting plates, the rotation of the inclined heat-conducting plates dynamically disturbs and redistributes the uneven heat distribution of the high-temperature flue gas within the exhaust pipe, continuously reconstructing the flue gas flow field. Through the continuous rotation of each inclined heat-conducting plate within the exhaust pipe, it is ensured that each inclined heat-conducting plate uniformly contacts and exchanges heat with the flue gas at all locations within the exhaust pipe, significantly improving the overall heat transfer efficiency and waste heat recovery rate.

The application discloses an internal filling layer easy-to-replace thermal insulation wall structure, which comprises a wall body, a surrounding plate, a positioning block, a thermal insulation strip, a first partition plate, a second partition plate, a first bolt, a second bolt, a first gap, a thermal insulation material filling layer, a second gap, a thermal insulation plate, a sealing strip, an edge pressing strip, a cavity, a clamping block, a magnet, a screw rod, a notch, a decorative plate, a connecting plate, a clamping hook and an embedding groove. The application has the advantages that the thermal insulation structure is arranged on one side of the wall body, the thermal insulation performance of the wall body can be ensured, the replacement of the thermal insulation material filling layer is facilitated, the thermal insulation strip is arranged to be attached to the wall body, the thermal insulation material filling layer is fixed, the replacement of the thermal insulation filling material is facilitated by removing the two partition plates, the thermal insulation filling material is further protected by arranging the thermal insulation plate, the thermal insulation performance is effectively improved, the spliced decorative plate is arranged on the surface of the thermal insulation plate, and the integrity of the thermal insulation wall structure is ensured.

The utility model relates to a high pressure heat exchange device for cryogenic liquefaction processing, including the tank shell that can define heat exchange chamber, the graphite heat conduction pipe of several is inserted with according to the mode of parallel with its axis and array arrangement in the shell cavity of tank shell, and the positioning disc group of the setting station that can locate graphite heat conduction pipe is clamped in both ends of tank shell, the intermediate flow guide pipe cylinder that can form with the shell cavity of tank shell with the cooling liquid separation cavity that the positioning disc group is matched with is detachably connected in both ends of tank shell, the flow guide end cover that can communicate with the pipe cavity of graphite heat conduction pipe is still installed in the one end of intermediate flow guide pipe cylinder away from tank shell, the heat exchange pipe network is still sheathed on the pipe body of graphite heat conduction pipe in tank shell. The utility model can reduce the use cost of heat exchange structure and promote the stability of heat exchange structure under the work of high pressure environment by constructing compound heat exchange structure to promote heat exchange effect and quality.

The utility model relates to an anti-crack heat preservation outer wall, including wall base, primer layer, mortar outer wall layer, imitation stone paint finish layer, imitation stone paint middle coating, be equipped with anti-crack heat preservation structure between mortar outer wall layer and imitation stone paint middle coating, its anti-crack heat preservation structure includes the curved plate and middle baffle, the curved plate is divided into multiple groups and is arranged through linear array, and the middle baffle is inserted into the curved plate, the middle baffle is hollow in the middle, and the rock wool filling layer is filled in the hollow, and secondly, the anti-crack heat preservation structure between mortar outer wall layer and imitation stone paint middle coating fills the heat preservation mortar and covers the curved plate, the middle baffle, the utility model solves the problem that the existing anti-crack heat preservation outer wall has the problem that the insufficient supporting force causes the poor anti-crack effect, and the heat preservation effect cannot be improved.

This invention discloses a five-axis rotary table and a direct-drive motor, relating to the technical field of five-axis rotary tables. It solves the technical problem that the lack of corresponding cleaning measures for the worm gear driving the rotation of the cradle frame before lubrication, and the potential for oil film contamination with particles to exacerbate meshing wear, results in this problem. The invention includes: a base, with a housing and bearing seat on top, and a cradle frame rotatably mounted between the housing and bearing seat; a transmission component installed inside the housing to drive the rotation of the cradle frame, the transmission component including a worm and a worm wheel; and a cooling mechanism installed inside the housing to cool the lubricating oil. This invention combines the cooling mechanism with a moving component to cool the lubricating oil. The low temperature stabilizes the viscosity of the lubricating oil, making the oil film less prone to breakage. Simultaneously, while the low-temperature lubricating oil lubricates the worm wheel, it also absorbs heat and cools the meshing area of ​​the worm wheel teeth using the oil temperature, cleaning the teeth before lubrication and reducing the adverse effects of impurities on tooth wear.

This utility model relates to the field of steel casting technology and discloses a heat treatment device for producing metal steel castings. It includes an induction heat processor and an induction heating coil mounted on the induction heat processor. Through the cooperation of a clamping block, a loading hole, and extrusion bolts, the steel to be treated can be placed into the loading hole on the clamping block. The steel is then positioned and fixed at the center of the loading hole by tightening the upper and lower extrusion bolts. Subsequently, a driving component drives the clamping block to slide, conveniently feeding the steel into the induction heating coil for heating. This structure not only simplifies the heating process, reduces the labor intensity of operators, and improves work efficiency, but also maintains a safe distance between operators and the high-temperature steel, reducing the probability of accidents and enhancing the overall safety of the equipment. The structure is simple, easy to operate, and highly practical.

This invention relates to a containerized asphalt tank, comprising a container and a tank body. A sturdy door is provided at one end of the container. The tank body is installed inside the container, with a gap between the container and the tank body. The tank body is equipped with an inlet pipe, an outlet pipe, and a flue pipe. A temperature control component is provided on the tank body, comprising electric heaters and heating tubes. Two electric heaters are located at one end of the tank body, and the heating tubes are located inside the tank body and connected between the two electric heaters. The heating tubes are filled with a heat-conducting medium. Several stirring components are provided on the container to maintain the fluidity of the asphalt. This invention effectively ensures the performance of the asphalt inside the tank.

The application discloses a high-service-life steam generator capable of delaying scale accumulation and belongs to the technical field of steam generators. The steam generator capable of delaying scale accumulation comprises an evaporation box, a bottom of the evaporation box is fixedly connected with a base, and further comprises a first mounting pipe and a second mounting pipe which are rotatably connected at two ends of the evaporation box respectively, a first mounting box is fixedly connected to the first mounting pipe, a second mounting box is fixedly connected to the second mounting pipe, and a first shunt box is fixedly connected to the first mounting box. The scale particles falling on the heating pipe are scraped off by the reciprocating movement of the first scraper, the water in the evaporation box is made to flow by the rotating heating pipe and the moving first scraper, then the flowing water washes away the scale, and the scale is far away from the heating pipe, so that the adsorption of a large amount of scale on the heating pipe is avoided, the heat conductivity between the heating pipe and the water is reduced, the scale accumulation and adsorption are delayed, and the service life of the steam generator is prolonged.

The utility model discloses a kind of extraction distillation column overhead condensing devices in benzene hydrogenation process, including condenser and reflux tank, the shell side of condenser is provided with several heat exchange tubes and several baffles, the shell side of condenser is respectively provided with air inlet and exhaust port, baffle includes side baffle and middle baffle, between side baffle and its nearby tube plate, between two adjacent middle baffles, respectively be provided with round plate, through-hole is machined on round plate, every through-hole is uniformly distributed with multiple air injection holes around, annular soft pad is arranged in the movable gap between through-hole wall and heat exchange tube outer wall, the shell side of condenser shell is provided with lateral cavity on one side, screw rod is arranged in lateral cavity, screw rod is connected with horizontal shift block by screw thread, the shell side shell of condenser is provided with liquid storage cavity in bottom, the bottom of liquid storage cavity is communicated with reflux tank by pipeline. Above all, the utility model has the advantages of liquid film can be eliminated in time, high heat exchange efficiency, good condensing effect.

The application discloses a single-chip vapor deposition device and system, which comprises a base, an at least partially liftable baffle arranged around the base and surrounding a process chamber during a film forming process, a process gas inlet mechanism arranged on one side of the process chamber for supplying process gas, an exhaust port arranged in the process chamber, the exhaust port and the process gas inlet mechanism being arranged on opposite sides of the single-chip vapor deposition device, a wafer transfer port arranged on a side of the single-chip vapor deposition device different from the side where the process gas inlet mechanism and the exhaust port are arranged, and the baffle being provided with a first opening only on a side close to the process gas inlet mechanism, process gas flowing into the process chamber through the first opening, flowing horizontally on the surface of a substrate and epitaxially forming a film, and at least part of process gas not participating in a reaction and reaction byproducts being discharged from the exhaust port. The application can reduce the long velocity difference of process gas at the front and back of a substrate, so as to improve the crystal quality and film thickness uniformity of an epitaxial layer.

This utility model belongs to the field of hot plate furnaces, and in particular, a hot plate furnace with a heat-insulating structure. It includes a worktable with multiple support legs installed at its bottom. A furnace body is installed at the bottom of the worktable, and mounting holes are provided at its bottom. A mounting groove is provided at the top of the worktable, and the mounting groove communicates with the mounting holes. A scraper is installed in the mounting groove, and a high-temperature aluminum silicate cotton lining is provided between the scraper and the worktable. An outer liner is installed through the mounting holes, extending into the furnace body. A heat-insulating inner liner is provided between the burner head inside the furnace and the outer liner. This utility model has a reasonable design. The high-temperature aluminum silicate cotton lining blocks heat conduction between the scraper and the worktable, and the inner liner partition prevents direct contact between the furnace fire and the outer liner, thus reducing the heat of the outer liner. Furthermore, the installation mechanism with springs, push rods, and positioning structures allows for convenient and stable installation and removal of the heat-insulating inner liner, thereby effectively reducing the worktable temperature, improving heat insulation performance, and enhancing equipment maintenance convenience.

This invention provides a flame retardant for water-based fire-retardant coatings for steel structures, prepared from the following raw materials: urea, phosphoric acid, acidic lignin, and pentaerythritol; the weight ratio of urea, phosphoric acid, acidic lignin, and pentaerythritol is 1:(0.8-1):(0.1-0.5):(0.01-0.05). Applying this flame retardant to water-based fire-retardant coatings for steel structures achieves both moisture resistance and flame retardancy.

This utility model discloses a constant temperature heating coaster, including a coaster body; the coaster body consists of an outer shell and a holding plate, with a protective shell installed at the bottom of the holding plate, the bottom end of the protective shell extending into the outer shell, a weighing sensor installed between the bottom end of the protective shell and the interior of the outer shell, a controller installed at the front end of the outer shell, and a voice recognition module installed on the other side of the front end of the outer shell. A heating element is installed inside the bottom end of the holding plate, and a temperature sensor is installed inside the protective shell. The temperature sensor, heating element, weighing sensor, and voice recognition module are connected to the controller via wires. This utility model uses voice control to start, stop, and adjust the heating temperature. Simultaneously, the weighing sensor stores the weight of the cup, and by comparing the weight with the water level in the cup, the controller automatically determines whether to continue heating based on the water level, avoiding heating an empty cup and preventing heating from continuing when there is no cup on the holding plate.

The application discloses a tower type heliostat support and relates to the technical field of solar energy utilization. The tower type heliostat support comprises a mirror surface supporting assembly, an elevation angle transmission assembly and a direction angle transmission assembly. The mirror surface supporting assembly comprises a mirror surface supporting plate and a support structure. The mirror surface supporting plate is fixed on the support structure. The elevation angle transmission assembly comprises an elevation angle hinged bearing, a transmission track and an elevation angle driving bearing. The elevation angle hinged bearing is fixed on the mirror surface supporting plate. The transmission track is connected between the elevation angle hinged bearing and the elevation angle driving bearing. One end of the elevation angle driving bearing is connected with the support structure, and the other end of the elevation angle driving bearing is connected with the direction angle transmission assembly. The application increases the integrity between the sub-mirrors, promotes the reflection of the sub-mirrors, avoids light dispersion, and changes the elevation angle through the movement of the transmission track driven by the elevation angle driving bearing, so that the application is suitable for various mirror field arrangements. The transmission mode is simple and direct, and the transmission track can be replaced.

The invention discloses a carrier wafer system with a high-temperature heat insulation structure, which is characterized by comprising a wafer main body, a temperature measuring device, a battery, a main control circuit, a box and a supporting structure, a customized high-temperature heat insulation structure is arranged in the box, the interior of the high-temperature heat insulation structure is divided into a battery independent cavity and a main control circuit cavity which are mutually independent, the battery is loaded in the battery independent cavity in a sealed mode, and the main control circuit is loaded in the main control circuit cavity in a sealed mode; the box is fixedly connected to the surface of the wafer main body through the supporting structure, and the temperature measuring device is arranged on the surface of the wafer main body and is electrically connected with the main control circuit. The device is good in stability, successfully solves the problems of inconvenience in temperature measurement, influence on a gas flow field, long cooling time and the like in the prior art, and provides a more efficient and accurate temperature measurement solution for the field of semiconductor processing.

The utility model discloses a kind of portable low-noise wool shears, comprising: handle main body;Motor, it is fixedly installed on upper support;Gear set, it includes first gear shaft and second gear shaft, first gear shaft is provided with first gear and first incomplete gear, first gear is engaged with driving gear, second gear shaft is provided with second gear and second incomplete gear, first gear shaft and second gear shaft are rotatably installed on upper support, second gear is engaged with first gear;Press claw, its back is provided with rack portion for engaging with first incomplete gear, second incomplete gear;Moving blade;Fixed blade.The utility model compared with prior art, solve the problem that existing electric wool shears is easy to fatigue and has big vibration, big noise.

This application discloses a prefabricated integrated thermal insulation structure panel, which includes a structural layer, an insulation layer, multiple anchors, and multiple barrier components. The insulation layer and the structural layer are stacked on top of each other. The multiple anchors pass through the insulation layer and partially extend into the structural layer. The multiple barrier components are embedded in the structural layer, and each barrier component corresponds to one of the multiple anchors and surrounds the portions of the anchors that extend into the structural layer. The barrier components are made of thermal insulation material. These barrier components significantly reduce heat transfer between the multiple anchors and the structural layer, avoiding cold bridging effects and resulting in better thermal insulation performance for the prefabricated integrated thermal insulation structure panel.

The utility model provides a kind of high-temperature-resistant flame-retardant tool car special tire, including tire web, tire hub, tire main body, protective outer layer and protective side plate, wherein: tire hub is fixedly installed in the periphery of tire web, and tire main body is installed in the periphery of tire hub, the protective outer layer is fixedly installed in the periphery of tire main body;The protective side plate is fixedly installed in the outside of tire web;The utility model protective outer layer and the setting of protective side plate, high-temperature-resistant ability is strong, with flame-retardant capacity, can all-around protection tire.

The application discloses a composite heat insulation structure suitable for radio frequency sealing and plasma ablation, and relates to the field of electrosurgical instruments. The composite heat insulation structure is arranged in a non-working area of a surgical clamp and is used for limiting heat diffusion and non-target conduction in a multi-energy working condition. The composite heat insulation structure comprises a first functional layer and a second functional layer. The first functional layer is arranged outside a metal base of the surgical clamp and is used for limiting heat and current diffusion to the non-working area in a radio frequency sealing working condition. The second functional layer is arranged outside the first functional layer and is used for improving the electrical insulation stability in a wet environment in a plasma ablation working condition. The composite heat insulation structure is designed in layers and is matched with differentiated functional layers, and is specifically adapted to different working condition requirements of radio frequency sealing and plasma ablation, so that the pain point that a single structure cannot simultaneously consider high-temperature heat insulation and wet-state insulation is effectively solved.

This invention discloses a low thermoelastic damping reconstructed double-spoke MEMS multi-ring gyroscope, belonging to the field of microelectromechanical systems (MEMS). This MEMS multi-ring gyroscope has a fully symmetrical structure in a plane, consisting of a central fixed anchor point, multiple concentric rings, spokes, and electrodes. The central fixed anchor point is circular, fixed by an external structure, and shares the same center with the multiple concentric rings. The innermost concentric ring is connected to the anchor point via spokes. The multiple concentric rings are connected by spokes, and the width of the concentric rings can be adjusted as needed, with varying spacing between the rings. The spoke structure includes single straight spokes, double straight spokes, and reconstructed double straight spokes. Spokes of the same ring are evenly distributed circumferentially, with the axes of adjacent rings differing by 22.5°. The outermost ring is connected to the first ring from the outside in by a single straight spoke, the innermost ring is connected to the anchor point by double straight spokes, and the remaining rings are connected by reconstructed double straight spokes. This gyroscope features a unique reconfigured double spoke design that extends the heat transfer path to reduce heat transfer at the spokes, thereby altering the internal temperature and heat flux distribution of the gyroscope; reducing the thermoelastic damping of the device; improving the gyroscope's sensitivity; and reducing zero-bias instability.

The utility model relates to the technical field of circuit board especially is involved in a kind of double-spliced PCB layout structure based on aluminium substrate, it includes: aluminium substrate, insulation treatment is carried out on aluminium substrate and is covered with copper, to form copper-clad layer, first area and second area are provided on copper-clad layer, first area is used to place high-power device and forms electrical connection;PCB board, PCB board is set to the second area of copper-clad layer and is used to place small power component, PCB board is electrically connected with the first area and the second area of copper-clad layer respectively by the mode of soldering tin, forms electrical conduction.This application passes through the adoption of double-spliced layout, small power component can avoid direct contact with aluminium substrate, to reduce the overall thermal conductivity, so that the temperature of element on PCB board is significantly lower than direct placement on aluminium substrate, to increase the life of element.