20results about How to "Increased turbulence intensity" patented technology

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 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.

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 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.

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 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 utility model belongs to the field of forestry protection, relates to a wind tunnel simulation test device for forestry protection. The device includes at least one roughness element unit, which includes a main body, a roughness element, a connecting element and a counterweight element. The main body is in the shape of a right triangular pyramid and is telescopic, and has three edges that meet at a right angle and are perpendicular to each other. The roughness element is located on the outer surface of at least one right angle face of the main body, and has a predetermined roughness. The connecting element is arranged on the edge of the face opposite the right angle to interact with other connecting elements and be joined together. The counterweight element is located inside the main body and increases the weight of the roughness element unit. The device of the utility model designs roughness element units that can be used individually or in combination, can flexibly adjust the size and shape of the roughness element according to different scaling ranges, and meets the simulation needs of different scaling and structural diversification test scenarios in the forestry environment.

This application relates to a subcooler for distillate from a distillation column, belonging to the field of subcooler technology. To address the problem of unreasonable flow channel structure in subcoolers, it includes a vertical cylindrical body. A first sealing plate and a second sealing plate are disposed within the vertical cylindrical body, with a plurality of subcooling tubes running through the space between the first and second sealing plates. One end of the vertical cylindrical body has a cooling medium inlet and a distillate inlet, while the other end has a cooling medium outlet and a distillate outlet. A circumferentially extending spiral guide groove is formed on the inner wall of the vertical cylindrical body, and a plurality of arc-shaped guide plates are staggered within the vertical cylindrical body. Each arc-shaped guide plate has stepped protrusions on its surface. This application has the effect of optimizing the flow field structure, significantly reducing flow resistance, and improving heat exchange efficiency.

The present disclosure relates to the technical field of dichloropropylene production, and an embodiment of the present disclosure provides a heat exchanger for dichloropropylene production, which comprises a heat exchange box, a through pipe is inserted into the heat exchange box, a plug-in heat exchange assembly is arranged in the heat exchange box, and a positioning and mounting assembly is arranged on the outside of the heat exchange box; the plug-in heat exchange assembly comprises a liquid inlet pipe, the liquid inlet pipe is arranged on the heat exchange box, one end of the liquid inlet pipe is inserted into the heat exchange box, a heat exchange coil is connected to the end of the liquid inlet pipe, the heat exchange coil is wound on the through pipe, a liquid outlet pipe is arranged at the end of the heat exchange coil, and the end of the liquid outlet pipe extends out of the bottom surface of the heat exchange box. Through the above technical solution, the technical problem that the conventional preheating mode in the prior art relies on electric heating equipment and has huge energy consumption, and the cooling after the reaction is usually achieved by the water cooling mode, although part of the heat can be recovered, but if there is no perfect waste heat utilization channel, the energy recovery target cannot be achieved.

The utility model relates to the field of voltage transformer discloses a high altitude voltage transformer with protection structure, solved, dust particle concentration is high in air, easily adhere to the heat conduction plate surface extending to the outside, dust is accumulated on the heat conduction plate surface and forms the heat insulation layer, causes the heat exchange efficiency of heat conduction plate and air to drop substantially, may exceed the tolerance limit of insulating material, accelerates the insulation ageing, even causes the equipment failure seriously, influences the stable operation of power system's problem, a high altitude voltage transformer with protection structure, including base, the protection shell of fixed connection in base top, the voltage transformer main part of setting in the protection shell inboard, through the variable height track control periodic lifting movement of push plate of guide slot, synchronous completion heat dissipation plate surface dust removal and heat dissipation airflow guide, make the heat conduction coefficient of heat dissipation plate keep stable state, improve the heat dissipation effect.

A kind of for tire production, it relates to the technical field of tire cord calendering, including pedestal and two support frames, a plurality of cooling roller is rotatably arranged between two support frames, outer fixed tube is fixedly arranged in cooling roller, a plurality of partition plates are fixedly arranged on the outer wall of outer fixed tube, partition plate is frictionally sealed with cooling roller, cooling cavity is formed between adjacent two partition plates, cooling cavity is communicated with external circulating cold water source, fixed ring is fixedly arranged in cooling cavity, the outer wall of fixed ring is provided with protruding structure, and extrusion assembly is arranged between two support frames;Partition plate is composed of a plurality of plane sector structure and curved sector structure alternately arranged along circumferential direction, there is axial spacing between adjacent two plane sector structures, and the axial spacing is greater than the thickness of partition plate, and the adjacent plane sector structures are connected by curved sector structure.

The application relates to the technical field of liquid cooling equipment, and particularly provides a high-heat-flow-density spiral heterogeneous pin-finned liquid cooling plate, which comprises a plurality of heat-dissipating pin-fins, an upper cover shell, a bottom of the upper cover shell being provided with a downwardly-opened accommodating cavity, a lower base plate, the lower base plate being combined with the open cover, the plurality of heat-dissipating pin-fins being arranged in the accommodating cavity and fixedly arranged on the lower base plate, and an outer wall of the lower base plate being used for contacting a high-heat-flow-density equipment; wherein the plurality of heat-dissipating pin-fins are all extended upwards from the bottom of the lower base plate by spiral blades; then the heat-dissipating pin-fins in the form of the spiral blades extending upwards from the bottom are arranged on the lower base plate, so that the cooling liquid is fully contacted with the spiral blades when flowing in the cavity, the contact area between the cooling liquid and the heat-dissipating pin-fins is increased, and the heat exchange efficiency is improved. Furthermore, the heterogeneous pin-fins adopting the pin-finned process can cover a larger range of edges and corners, so that the utilization rate of the base plate area is improved.

The utility model provides a hydrogen mixing device, relates to the technical field of natural gas hydrogen mixing, and aims to improve the mixing effect of natural gas and hydrogen. The hydrogen mixing device comprises a natural gas inlet pipe, a hydrogen inlet pipe, a mixing pipe and a mixing element. The mixing element is arranged in the mixing pipe, the mixing element comprises a first fixing frame and a first blade group, the first fixing frame is provided with a first mixing channel, the first mixing channel is provided with a first mixing inlet and a first mixing outlet, the first blade group is arranged in the first mixing channel, the first blade group comprises a plurality of first blades and a plurality of second blades, the first blade extends along a first direction, one end of the second blade is connected with one end of the first blade far away from the first mixing inlet, the other end extends to the first mixing outlet along a second direction, and the orthographic projection of the first blade on the plane of the second blade is overlapped with at least part of the outline of the second blade; wherein the first direction intersects with the second direction.