65results about How to "Increased turbulence intensity" patented technology

The invention discloses a jet aerator with low energy consumption and high oxygenation efficiency. The jet aerator comprises a Venturi tube and a quick-pass rhombic tube which are of a split structure, multi-rod supports are installed on the inner wall faces of round pipes at the two ends of the venturi pipe and support tail hook bionic stirring blades, a double-end reverse screw is arranged in the venturi pipe, one end of a quick-pass rhombic pipe is connected with the venturi pipe, the other end of the quick-pass rhombic pipe extends into an air suction chamber, and the upper portion of the air suction chamber is connected with an air supply pipe. The end, away from the Venturi tube, of the air suction chamber is connected with a mixing cavity tube, the mixing cavity tube is connected with the front end of a throat tube, a divergent wing-like blade set and a special-shaped taper hole plate are arranged in the mixing cavity tube, and a grid tray scattering nozzle is arranged in the throat tube; compared with a circular pipeline, the quick-passing rhombic pipe can provide higher water conveying capacity; the gradual change spiral body design on the double-end reverse screw can generate vortexes and turbulent flows, the turbulent flow intensity of water flow is improved, the mixing and diffusion capacity of the water flow is improved, and therefore the oxygenation efficiency is improved.

The invention discloses a high-density liquid cooling server and a server cabinet system, and relates to the technical field of liquid cooling servers, the server cabinet system comprises an equipment cabinet, an assembly plate is mounted in the equipment cabinet, a circulating pump is mounted above the assembly plate, two sides of the circulating pump symmetrically communicate with liquid cooling pipelines, the front side of the circulating pump communicates with a liquid storage tank, and the front side of the liquid storage tank communicates with a liquid storage tank. A strain constant-temperature mechanism is arranged on the front side of the assembly plate and used for flexibly conducting heat dissipation treatment on the assembly plate, and the cold liquid regulation and control mechanism is used for enabling cooling liquid to generate a spiral flowing track in the flowing process. Targeted heat dissipation management of a high-temperature area is achieved, when it is detected that the temperature of a specific area is abnormally increased, the circulation paths of cooling liquid in the upper area and the lower area can be synchronously adjusted in time according to the change of temperature increase, and the circulation area of a channel is reduced by dynamically adjusting and distributing the flow of the cooling liquid and combining temperature flexibility.

A liquid cooling plate structure with uniform heat dissipation performance for a battery pack comprises a liquid cooling plate, a flow channel, a cooling medium inlet, a cooling medium outlet, a first-stroke flow channel, a second-stroke flow channel, a third-stroke flow channel, a fourth-stroke flow channel, a first turning flow channel, a second turning flow channel, a third turning flow channel, a turbulent flow element, a bionic head, a bionic tail, a horizontal supporting structure and a vertical supporting structure, a conventional liquid cooling plate adopts a uniform and symmetrical structure, and the heat absorption capacity of a cooling medium at each part of a cold plate runner is inconsistent, so that the temperature difference of a lithium battery is relatively large, but the liquid cooling plate provided by the utility model has the characteristics of improving the heat dissipation performance and obviously preventing the pressure loss of a system from being increased; the turbulence intensity of a cooling medium in a flow channel of the liquid cooling plate can be effectively improved, a thermal boundary layer is destroyed, thermal resistance is reduced, the uniform heat dissipation effect of the cooling medium in the whole process is improved, and then the uniform temperature performance of a battery system is improved.

The invention relates to the technical field of liquid cooling plates, in particular to a power battery buckling type liquid cooling plate which comprises a liquid cooling plate body used as a device body, grooves are formed in the opposite sides of a top plate and a bottom plate, and a fixing mechanism used for buckling and fixing the top plate and the bottom plate is arranged on the liquid cooling plate body. And a liquid cooling mechanism for stably cooling the power battery is arranged in the liquid cooling plate main body. According to the buckling and pressing type liquid cooling plate for the power battery, the top plate and the bottom plate can be connected in a buckling and pressing mode through the fixing mechanisms, two special-shaped elastic blocks are pressed inwards at the same time under the action of partition blocks, and at the moment, arc-shaped plates at the bottoms of the special-shaped elastic blocks are inserted into circular holes; when the two special-shaped elastic blocks at the bottom of the same fixing block are completely located in the round holes, the two arc-shaped plates are attached to the bottom wall of the bottom plate, at the moment, the top plate and the bottom plate are connected, the limiting grooves are further fixed through the limiting assemblies, and therefore the top plate and the bottom plate can be easily and conveniently disassembled and assembled.

The invention provides an internal thread aluminum pipe, a heat exchanger and an air conditioner, and relates to the technical field of air conditioners. The internal thread aluminum pipe comprises a pipe body and thread teeth. The pipe body is made of aluminum alloy, and the thread teeth are arranged on the inner side wall of the pipe body. Wherein the value range of the outer diameter of the pipe body is 4.95 mm to 5.05 mm, and the value range of the spiral angle of the thread teeth is 15 degrees to 25 degrees. The heat exchanger provided by the invention adopts the internal thread aluminum pipe. The air conditioner provided by the invention adopts the heat exchanger. According to the internal thread aluminum pipe, the heat exchanger and the air conditioner, the technical problem that the cost and the heat exchange effect of the heat exchanger and the air conditioner are difficult to consider can be solved.

This invention provides an organic substrate preparation device and method suitable for rose cultivation, relating to the field of organic substrate preparation technology. The device includes a telescopic mechanism comprising a bidirectional mechanism and a driving mechanism. The telescopic mechanism provides not only circumferential stirring torque but also vertical mixing torque, thus ensuring thorough mixing of the organic matter in multiple directions. The bidirectional mechanism generates irregular vertical movement in response to circumferential stirring, further enhancing the vertical mixing of the organic matter and achieving multi-dimensional composite stirring. This significantly improves mixing uniformity and fermentation efficiency. The invention utilizes a unique spatial linkage (side rod, inner / outer ball sleeve) and flexible transmission (unidirectional mechanism) design to intelligently decompose the unidirectional rotation of the driving shaft into a superposition of circumferential revolution and axial reciprocating motion of the stirring components (upper / lower stirring sleeves).

The utility model relates to a heat dissipation structure, a power assembly, a motor controller and a vehicle, the heat dissipation structure comprises a base body, the base body is provided with a heat dissipation area, and the heat dissipation area is provided with a heat dissipation part and a first flow guide part arranged around at least part of the edge of the heat dissipation area; the first flow guide part is used for guiding at least part of the cooling medium on the edge of the heat dissipation area to the heat dissipation part, and the heat dissipation device can improve the heat exchange effect and further improve the cooling effect on the power module.

The invention discloses a high-concentration and low-concentration organic waste gas mixing device and method, the device comprises an inner cylinder structure and an outer cylinder structure, and an annular space is formed between the inner cylinder structure and the outer cylinder structure; the high-concentration waste gas distributors are arranged in a multi-stage manner, are positioned in the inner cylinder body, are communicated with the annular space and are used for uniformly and downwards distributing and horizontally distributing the high-concentration waste gas; each stage of high-concentration waste gas distributor consists of a plurality of tubular structures which are arranged at intervals in a staggered manner along the axial direction of the inner cylinder body; the low-concentration waste gas distributor is arranged at the low-concentration waste gas inlet at the bottom of the inner barrel, is positioned in the area on the other side of the first-stage high-concentration waste gas distributor, and is used for uniformly distributing low-concentration waste gas into the first-stage waste gas channel; the mixed waste gas distribution plates are arranged in a multi-stage mode and located in the inner barrel, each mixed waste gas distribution plate occupies the whole space of the cross section of the inner barrel, a half area of each mixed waste gas distribution plate is provided with holes, and the hole areas correspond to the high-concentration waste gas distributors in position; and the spiral blade is fixed at the top of each stage of high-concentration waste gas distributor and is positioned right below the opening area of the mixed waste gas distribution plate.

The application discloses a kind of for the synthesis of bio-based polyether polyol impact jet stirring reactor, it is related to reactor technical field, including reactor body, adjusting mechanism, charge air mechanism and stirring mechanism, the left end of the top of the reactor body is fixedly connected with the outer wall of adjusting mechanism, the left end of the reactor body is fixedly connected with charge air mechanism, the top center of the reactor body is fixedly connected with stirring mechanism, adjusting mechanism is by adjusting four groups of nozzle and shape change, change jet position and intersection, optimize flow field adaptation multiple raw materials;Guide mechanism adjusts the angle of guide vane and cooperates nozzle, double control flow field prevents uneven mixing;Charge air mechanism controls wave-shaped air bag by vacuum pump and piston rod, optimizes flow field to avoid scale formation;Stirring mechanism relies on part rotation and jet coordination, adaptation scale and promote gas-liquid mass transfer efficiency, finally improve synthesis efficiency, product uniformity and product quality.

The invention discloses a jet aerator containing multi-stage coaxial reversing blades and a spliced ​​texture nozzle, comprising a water inlet pipe, the inner wall of the water inlet pipe is connected with a plurality of shearing units along its length direction, one end of the water inlet pipe is connected with a primary nozzle, the primary nozzle is connected with a secondary nozzle through a circular tube, the outer wall of the circular tube is connected with an air suction chamber, the secondary nozzle is arranged in the air suction chamber, the outer wall of the air suction chamber is connected with an air suction pipe, the end of the air suction chamber away from the circular tube is connected with a mixing chamber, the inner wall of the mixing chamber is connected with a coaxial reversing mechanism, the coaxial reversing mechanism is connected with a rotating unit, and the end of the mixing chamber away from the air suction chamber is connected with a spliced ​​texture nozzle through a flange. The invention can realize the refinement treatment of sewage in the shortest possible time and improve the sewage treatment efficiency of the jet aerator.

The invention belongs to the technical field related to boiler equipment, and discloses a methanol boiler ignition system and method capable of achieving stable ignition, and the system comprises a methanol pipeline, an air pipeline, a built-in steam pipeline and an air channel; the methanol pipeline is connected with the built-in steam pipeline, and a methanol pump and a methanol heater are sequentially arranged on the methanol pipeline; the air pipeline is connected with the air passage, and an air heater is arranged on the air pipeline; the second end of the built-in steam pipeline penetrates through the wall face of the air channel and extends in the air channel, and the second end of the built-in steam pipeline and the second end of the air channel are connected to a combustor for ignition. The second end of the built-in steam pipeline is inserted into the air passage to extend, and only a small part of the first end of the built-in steam pipeline is located outside the air passage, so that hot air can heat and preserve heat of the built-in steam pipeline, it is guaranteed that methanol steam in the built-in steam pipeline is not liquefied, and the ignition stability is good.

The present invention discloses an air outlet adjustment mechanism, method and air outlet adjustment method for improving thermal comfort, which belongs to the technical field of vehicle-mounted air conditioners and solves the technical problem that the wind speed of the air outlet of the existing vehicle-mounted air conditioner is high, resulting in low thermal comfort for the human body. The adjustment mechanism is arranged in the air outlet duct of the air conditioner; the air outlet adjustment mechanism includes two groups of adjustment mechanisms, and the two groups of adjustment mechanisms are respectively fixed on the two opposite inner walls of the air outlet duct; the adjustment mechanism includes a driving mechanism and a plurality of fins arranged at intervals along a first direction, and the driving mechanism can drive the fins to rotate around a second direction, and the first direction, the second direction and the length direction of the air outlet duct are perpendicular to each other; the air outlet adjustment method is applied to the air outlet adjustment mechanism; the air outlet adjustment method for improving thermal comfort is applied to the air outlet adjustment method. The present application can improve the turbulence intensity of the airflow at the air outlet of the air outlet duct of the air conditioner, and the wind feeling is close to natural wind, which can greatly improve the comfort of the occupants.

This utility model provides a flow-turbulence device for heat exchange tubes in a fire-tube boiler, comprising: a sleeve assembly, a flow-turbulence component, and a tie rod. The sleeve assembly includes: a sleeve member and a first blade group. The sleeve member is sleeved over the first blade group. The first blade group includes: helical blades and a core member. The helical blades are spaced around the core member to define several helical air ducts within the sleeve member. The core member is fixed to the tie rod. The flow-turbulence component includes: a sleeve member and a second blade group. The sleeve member is sleeved over the second blade group. The second blade group has a similar structure to the first blade group to define several helical air ducts within the sleeve member. The sleeve assembly and the flow-turbulence component are connected in series via the tie rod, with the sleeve assembly and the flow-turbulence component spaced apart on the tie rod. This improves the heat transfer coefficient inside the heat exchange tubes of the fire-tube boiler and reduces the required heat exchange area of ​​the equipment.

The utility model discloses a low temperature catalytic device of isocyanate crosslinking agent, include: reation kettle body, second reagent storage tank, high pressure delivery pump group, second reagent distribution ring, nozzle, local mixing mechanism, jet impact board, shunt guide vane array and stirring mechanism, wherein, second reagent distribution ring set up in the inside of reation kettle body, and are connected with second reagent storage tank through high pressure delivery pump group, and multiple nozzles equidistance set up on the outside wall of second reagent distribution ring. The utility model discloses through multiple nozzle radial jet flow and local turbulent flow generating device cooperation, realizes reagent fast dispersion and even mixing, and low shear stirring mechanism ensures system stability. The utility model can solve the problem that the mixing is uneven after adding the catalyst or the second reagent in the low temperature high viscosity system, has the advantages of quick dispersion, even mixing, energy consumption reduction and simple operation, is suitable for low temperature catalytic reaction of isocyanate crosslinking agent.

The present invention relates to a pickling tank system and a method for improving the pickling turbulence intensity, the pickling tank system comprises: a tank body, a support stone is provided at the bottom of the tank body, the pickling strip is arranged on the support stone, an inlet stop stone and an outlet stop stone are provided on the width side wall of the tank body; an inlet spray beam and an outlet spray beam are symmetrically arranged above the tank body, and the distance between the inlet spray beam and the outlet spray beam is longer than the length of the tank body; a nozzle is evenly arranged on the inlet spray beam and the outlet spray beam, and the nozzle faces the tank body; a first group of side nozzles are symmetrically arranged on both sides of the tank body, the first group of side nozzles are inclined, and the first group of side nozzles face the inlet stop stone direction in the tank body. The turbulence intensity of the acid solution can be improved, the surface of the strip is fully pickled, the efficiency of the kinetic energy of the side nozzles is improved, and the interference of the swirl flow of the side nozzles on the jets of the spray beams at both ends of the pickling tank can be eliminated.

The utility model discloses an organic matter purifying agent raw material pretreatment device, and the device includes the stirring tank with the cone bottom and is arranged in the agitator of stirring tank, wherein, the agitator includes stirring shaft and sets up the intermediate stirring structure, the outer periphery stirring structure and the bottom stirring structure on stirring shaft, the outer periphery stirring structure includes the extension arm fixed in stirring shaft both sides, the extension arm end is provided with the stirring column and is provided with the stirring arc plate between stirring column, the stirring arc plate shape is semicircular arc plate, and one end is fixed in the upper end of one stirring column, and the other end is fixed in the lower end of another stirring column. The device is through multilayer stirring and optimization feeding design, improves the utilization of medicine, reduces the operating cost, prevents the equipment from blocking, is applicable to industrial wastewater and domestic sewage treatment, and significantly improves the mixing uniformity and process efficiency.

This invention provides an SCR mixing system, belonging to the field of exhaust gas treatment technology. The SCR mixing system includes: an intake chamber, located on the top side of the housing, connected to both an air inlet and a urea inlet, and a spiral intake pipe connected to the urea inlet within the intake chamber; and a mixing chamber, located beside the intake chamber and connected to it via the spiral intake pipe, and an installation pipe within the mixing chamber. The installation pipe is not concentric with the central axis of the housing, and spiral blades are fixedly mounted on the installation pipe. This SCR mixing system effectively breaks down and decomposes urea aqueous solution, accelerating the mixing of urea solution and exhaust gas, preventing urea crystallization. Furthermore, because the installation pipe is not concentric with the central axis of the housing, the cross-sectional area of ​​the mixed airflow continuously increases and decreases during the transport process by the spiral blades, repeatedly circulating and causing continuous changes in airflow pressure and velocity, thus continuously reducing noise during the movement of the mixed airflow.

The utility model relates to the technical field of stirring equipment, concretely to a kind of anti-condensation stirring equipment for glass cement production, including bottom plate and the moving plate being set on the top of bottom plate, the outside of bottom plate is provided with the moving assembly of making moving plate go up and down linearly moves. The utility model can make the reciprocating of stirring shaft up and down, to realize the stirring of vertical direction, while stirring shaft is in the process of rotating and up and down linear reciprocating motion, stirring blade is constantly in the process of expansion and contraction motion, this reciprocating expansion and contraction motion is superimposed on the rotation of stirring shaft, can increase the shear rate and turbulence intensity of fluid;Periodic expansion and contraction changes flow field structure, possibly breaks laminar boundary layer, promotes microcosmic mixing, expansion and contraction motion generates unsteady flow, triggers secondary flow or vortex, expands stirring action range, reduces mixing dead zone, to improve stirring efficiency, also improve anti-condensation effect.

The application discloses an ice crystal eliminator and supercooled water ice making system, wherein the ice crystal eliminator comprises a shell with a mixing cavity; a cold water pipe in communication with the mixing cavity, the cold water pipe conveying cold water with ice crystals into the mixing cavity; a preheated water pipe in communication with the mixing cavity, the preheated water pipe conveying preheated water into the mixing cavity, the preheated water and the cold water with ice crystals colliding and mixing in the mixing cavity; and a water outlet pipe in communication with the mixing cavity, the water outlet pipe discharging mixed water in the mixing cavity. The ice crystal eliminator and the supercooled water ice making system effectively solve the problems of poor ice crystal elimination effect and low system energy efficiency in the prior art.

The invention discloses a compact ultraviolet reactor adopting a longitudinal vortex generator. The longitudinal vortex generator comprises a bottom plate and a plurality of longitudinal vortex generating plates; the bottom plate is of an annular structure or a spiral structure, and the longitudinal vortex generating plate is of a pentahedral, hexahedral or polyhedral plate-shaped structure; the longitudinal vortex generating plates are uniformly arranged at intervals in the circumferential direction of the bottom plate and are obliquely arranged relative to the radial plane of the bottom plate; the compact ultraviolet reactor comprises an ultraviolet radiation light source, a light-transmitting quartz tube, a longitudinal vortex reactor and a reactor cavity which are coaxially arranged, and an annular flow channel between the reactor cavity and the light-transmitting quartz tube forms a reaction area. The longitudinal vortex generator enhances the mass transfer capacity of a fluid medium in the reactor, can prolong the time for the fluid medium to receive ultraviolet radiation, thereby improving the treatment efficiency, and is small in occupied flow channel space, small in generated differential pressure resistance and suitable for various compact ultraviolet reactors.

The invention belongs to the technical field of ferrous metallurgy, and relates to a heat transfer structure of a super-large-section special-shaped blank crystallizer. The crystallizer comprises a wide panel (A) and a narrow panel (B), a plurality of water seams (9) are formed in the narrow panel inner wall (8) of the narrow panel (B), a plurality of concave structures (10) and a plurality of convex structures (16) are arranged on the inner wall of each water seam (9) of a steel flow impact area (11) of the narrow panel (B), and the narrow panel (B) comprises a narrow panel inner wall (8), an upper end (13) and a lower end (12). And the water seam (9) is of a groove structure arranged on the inner wall (8) of the narrow panel piece. According to the heat transfer structure of the super-large-section special-shaped blank crystallizer, the heat transfer efficiency is effectively improved, the heat transfer requirement of super-large-section special-shaped blank continuous casting is effectively met, and therefore the product machining quality is improved.

The utility model discloses a kind of topological surface corrugated air conditioner high-efficiency heat exchange evaporation pipes, including evaporation pipe body, the evaporation pipe body is provided with core pipe, the outside of core pipe is fixedly wrapped with heat shrink tube, topological surface is opened in the circumferential inner wall of evaporation pipe body, the inner annular surface of evaporation pipe body is fixedly provided with baffling mechanism. The topological surface corrugated air conditioner high-efficiency heat exchange evaporation pipe, hot medium impact on the narrow part of baffle block, the beam medium is divided into three groups, in turn through baffle block, and pass through multiple groups of baffle block and carry out turbulence blocking, the baffle block of isosceles trapezoidal will main stream be divided into upper center flow, wall flow and lateral flow, form complex vortex system structure behind baffle block, significantly enhance radial mixing;Shunting effect makes fluid constantly scour wall surface, destroy thermal boundary layer, reduce thermal resistance;When fluid passes through multiple groups of baffle block in turn, form disturbance, recovery and again disturbance cycle.

The utility model relates to the technical field of positioning tools, in particular to a positioning tool for plate welding. According to the technical scheme, the clamping device comprises a base plate and further comprises a positioning block fixedly installed on the base plate, a fixing frame is fixedly arranged on the base plate and located on one side of the positioning block, an air cylinder is fixedly installed at the bottom end of the fixing frame, a piston rod of the air cylinder is fixedly connected with a connecting plate, a clamping plate is fixedly installed on one side of the connecting plate, and a clamping groove is formed in the clamping plate. A guide groove is formed in the side, away from the fixing frame, of the top of the base plate, and a moving block is slidably mounted in the guide groove. Heat generated in the welding process of the positioning block is rapidly dispersed and transmitted, flexible deformation of the soft feather pieces can generate multi-scale vortexes, a laminar flow boundary layer of cooling water is broken, turbulence intensity is improved, and therefore heat conduction efficiency is enhanced, cooling and heat dissipation effects are remarkably improved, and the service life of the device is prolonged.

The utility model relates to the technical field of vacuum furnaces, and particularly discloses a rapid cooling device for a vacuum furnace, which comprises a vacuum furnace body, a cooling cavity, a spiral cooling pipe, a cold liquid device and a cold air device, the cooling cavity is embedded in the inner wall of the vacuum furnace body, and the spiral cooling pipe is arranged in the cooling cavity; a spiral guide plate is arranged in the spiral cooling pipe in the axial direction and divides the spiral cooling pipe into a cold liquid medium channel and a cold air medium channel. The cold liquid device is communicated with the cold liquid medium channel through a pipeline and is used for circularly cooling a liquid medium; the cold air device is communicated with the cold air medium channel through a pipeline and is used for conveying a flowing gas medium into the cold air medium channel; a spiral guide plate is arranged in a spiral cooling pipe in the axial direction, and the spiral guide plate divides the spiral cooling pipe into a cold liquid medium channel and a cold air medium channel; rapid heat absorption of liquid and forced convection of gas are achieved, and the cooling speed is increased.

This invention belongs to the field of mineral flotation technology, specifically relating to a forced slurry conditioning-eddy current mineralization-static separation mineral flotation system and method. It includes a slurry conditioning cylinder, a separation chamber, and a mineralization cylinder connected in sequence. The slurry conditioning cylinder contains a slurry conditioning pipeline; the separation chamber contains raw ore processing pipelines and middlings processing pipelines; and the mineralization cylinder contains an eddy current mineralization pipeline. The slurry conditioning pipeline, raw ore processing pipeline, eddy current mineralization pipeline, and middlings processing pipeline are connected sequentially. After minerals and flotation reagents are conditioned in the slurry conditioning cylinder to obtain raw ore slurry, it passes through the separation chamber to obtain middlings ore slurry, which then enters the eddy current mineralization pipeline. The middlings ore slurry returns to the separation chamber and enters the middlings processing pipeline for flotation separation. Finally, concentrate is collected at the top of the separation chamber. The mineral flow path designed in this invention enables efficient collisions between minerals of different particle sizes and slurry conditioning reagents, as well as between minerals and air bubbles, achieving effective flotation recovery.

This invention provides a liquid-cooled charging module and charging pile, belonging to the field of vehicle charging technology. The liquid-cooled charging module includes a liquid-cooling plate and a PCB board. The liquid-cooling plate includes a first cooling zone, a second cooling zone, and a third cooling zone distributed along a first path. Cooling channels distributed in the first and third cooling zones are formed within the liquid-cooling plate. The PCB board includes a first heat dissipation zone, a second heat dissipation zone, and a third heat dissipation zone. The cooling channels distributed in the first and third cooling zones extend along the first path to the second cooling zone, or the liquid-cooling plate also has diversion channels distributed within the second cooling zone, which are connected to the cooling channels. The liquid-cooled charging module and charging pile provided by this invention aim to solve the problems of unreasonable component distribution and low heat dissipation efficiency of the liquid-cooling plate in the prior art, which easily leads to local high-temperature points, accelerating device aging and performance degradation.

This utility model discloses a folded plate mesh finned tube structure, including an outer finned tube, an inner finned tube, a double-finned tube, and a sleeve-type double-finned tube. This utility model uses a metal plate mesh hydraulically folded to form a continuous edge structure as the outer fin. The pore structure of the plate mesh itself and the three-dimensional edges formed by folding, as well as the star-shaped cross-section edges, induce airflow to generate detached vortices, breaking the boundary layer thermal resistance. Compared with traditional straight fins, the heat transfer coefficient is improved. Compared with traditional straight or spiral fins, it provides a denser and more complex heat exchange surface per unit volume. The sharp edges and complex geometry are like countless micro-turbulents, strongly disturbing the airflow or liquid flow, effectively breaking the laminar sublayer on the wall, significantly reducing the boundary layer thermal resistance, and enhancing turbulent mixing. The discontinuity of the folded edges and the specific angle design induce the fluid to generate strong vortex shedding and secondary flow, greatly enhancing the convective heat transfer intensity between the fluid and the fins, and between the fluid and the base tube.

The tube type heat exchanger comprises a main barrel, a first tube box, a second tube box and heat exchange tubes, liquid enters the first tube box from a circulating liquid inlet tube and flows into the second tube box through the heat exchange tubes, live steam enters the main barrel from a live steam inlet tube, heat transfer is conducted between the steam and the liquid through the heat exchange tubes, and heat exchange efficiency is improved. A flow guide cone is arranged in the first pipe box, the vertex of the flow guide cone is located in the circulating liquid inlet pipe, when the circulating liquid vertically enters the first pipe box from the circulating liquid inlet pipe, the outer wall of the flow guide cone is directly impacted, the conical structure of the flow guide cone guides the fluid to be diffused in the circumferential direction of the outer wall of the flow guide cone, and stable rotational flow is formed; the fluid is changed from disordered flowing of impacting the wall of the tube box into spiral flowing, the fluid enters the heat exchange tube at the tangential speed of spiral rotation, the initial speed of the fluid entering the heat exchange tube is increased, thermal resistance is reduced, the thickness of a thermal boundary layer is reduced, and the convection heat exchange efficiency is improved.

This utility model discloses a high-temperature resistant fuel nozzle for aero-engines, relating to the field of fuel nozzle technology. It includes a mounting ring and an air guide assembly. The top of the air guide assembly is fixedly connected to the bottom of the mounting ring, and a cooling assembly is fixedly connected to the inner wall of the air guide assembly. The cooling assembly includes an inner air tube, and a honeycomb plate is fixedly connected to the inner wall of the inner air tube. The fuel nozzle is fixed to the outer wall of the inner air tube by a spiral ring, guiding the cooling airflow to form a spiral flow, increasing the contact area and turbulence intensity between the airflow and the inner air tube, improving heat exchange efficiency, reducing the fuel passage temperature, and preventing fuel vaporization at high temperatures from affecting injection performance. The honeycomb plate is arranged in a ring array on the inner wall of the inner air tube, dividing the cooling airflow into multiple fine streams that evenly cover the inner wall of the inner air tube, avoiding localized overheating. This fuel nozzle achieves the purpose of a high-temperature resistant fuel nozzle for aero-engines.

The invention provides a self-made cooling system for a photovoltaic aluminum profile vertical oxidation pickling tank. The self-made cooling system comprises a bath cooling pool, a pickling tank, a refrigeration coil, a compression refrigeration assembly, a laminar flow fin plate, a liquid guide box, a stirring screw rod, a driving motor, a multi-layer cooling channel, a self-adaptive cooling system and a pulse type cooling liquid flow control technology. The periphery of the pickling tank is spirally wound with the refrigerating coil, and refrigerating fluid is cooled through the compression refrigerating assembly, so that balanced cooling of pickling fluid is ensured. And due to the combined design of the laminar flow fin plate and the liquid guide box, the pickling solution is uniformly distributed, and local overheating or supercooling is prevented. The self-adaptive cooling system adjusts the cooling intensity of each area in real time through an intelligent temperature sensor network, and the temperature uniformity is guaranteed. The pulse type cooling liquid flow control technology further improves the cooling effect, and formation of a cold area and a hot area is avoided. The system further comprises a temperature control module and a liquid level monitoring and automatic filling system, and stable operation of the system is ensured.