109 results about "Convective flow" patented technology

The utility model discloses a primary brine preheats high -efficient energy -conserving heater, including the casing, the both ends of casing are provided with the pipe box, is provided with multiple groups of heat exchange pipeline in the casing, be provided with multiple groups of disturbing wheel in the casing, be provided with two groups of support ring on the disturbing wheel, the inner wall connection of support ring and casing, the disturbing wheel rotation is arranged between two groups of support rings, be provided with multiple groups of disturbing vane on the disturbing wheel, and multiple groups disturbing vane are annular array distribution and set up on the disturbing wheel, the utility model discloses beneficial effect is: through being provided with multiple groups rotatable disturbing wheel and its annular array distribution disturbing vane in the casing, under the high temperature fluid flow impact passive rotation, forms the lasting, dynamic disturbance to the casing fluid, and this design effectively destroys the temperature boundary layer and the speed boundary layer of casing fluid, and strengthens the turbulence effect, and promotes high temperature fluid and heat exchange pipeline outer wall surface realizes more sufficient forced convection heat transfer.

This application discloses a liquid pump, including a housing and an air-cooled heat dissipation structure. The housing contains: a pump liquid chamber with an inlet and an outlet; a motor chamber located on one side of the pump liquid chamber; a heat dissipation chamber located on the outer periphery of the motor chamber for heat dissipation; a liquid channel located between the pump liquid chamber and the heat dissipation chamber, with the heat dissipation chamber connected to the pump liquid chamber via the liquid channel; and an air-cooled heat dissipation structure located on one side of the motor chamber for air cooling of both the motor chamber and the heat dissipation chamber. Under pressure differential, the liquid in the pump liquid chamber flows into the heat dissipation chamber through the liquid channel for heat exchange. After heat exchange, the liquid flows back to the pump liquid chamber from the heat dissipation chamber via the liquid channel, causing the liquid to circulate repeatedly from high pressure to low pressure, thus carrying away heat from the heat dissipation chamber. This application eliminates the need for a piping structure, simplifying manufacturing, reducing costs, and decreasing fluid flow resistance. Furthermore, the air-cooled heat dissipation structure accelerates the convective heat exchange rate between the external air and the motor chamber and heat dissipation chamber, further improving the heat dissipation efficiency and performance of the liquid pump.

The present application relates to a heat management system and a battery, comprising a heat exchange assembly and a turbulence assembly, the heat exchange assembly comprising heat exchange components, a plurality of heat exchange flow channels are formed on the heat exchange components, the plurality of heat exchange flow channels are sequentially arranged along a first direction, and the heat exchange flow channels are used to arrange heat exchange medium; the turbulence assembly is arranged in the heat exchange flow channels, the turbulence assembly comprises a plurality of turbulence components, and the plurality of turbulence components are sequentially arranged along a second direction; at least one turbulence unit is arranged on each turbulence component; when the same turbulence component is provided with a plurality of turbulence units, the plurality of turbulence units are sequentially arranged along the first direction, and each turbulence unit is arranged in different heat exchange flow channels; at least one turbulence hole is arranged on each turbulence unit, and when the same turbulence unit is provided with a plurality of turbulence holes, the plurality of turbulence holes are sequentially arranged along the first direction. The present application changes the flow direction and state of the heat exchange medium by arranging the turbulence assembly, improves the efficiency of convective heat exchange, and meets the uniform temperature requirement.

This invention discloses a fuel cell and its application. The bipolar plate includes a connecting structure with a cross-flow channel and a narrowing structure. The hydraulic diameter of the narrowing structure is smaller than that of the non-narrowing structure. The non-narrowing structure of the flow channel has a connecting structure corresponding to at least one of two adjacent ridges. Furthermore, the resistance of the gas in the first direction through the narrowing structure is R1, and the resistance in the second direction through the connecting structure is R2, where R1 / R2 ≥ 20. The first direction is the flow direction of the gas entering the flow field, and the second direction is perpendicular to the first direction. Therefore, the fuel cell bipolar plate provided by this invention can more fully utilize the pressure drop generated by the narrowing structure to create a larger pressure difference between adjacent flow channels. This allows a smaller flow field pressure drop to create the same or higher level of under-ridge gas convection and permeation effect within the gas diffusion layer or membrane electrode, thereby improving the under-ridge mass transfer and drainage performance of the fuel cell.

The application discloses a high-temperature superconducting conductor and a preparation method thereof, and relates to the technical field of high-temperature superconductivity, wherein the conductor comprises an inner pipe body and an outer pipe body arranged coaxially, a liquid nitrogen convection cooling zone is formed in the inner pipe body, and a vacuum heat insulation cavity is formed between the inner pipe body and the outer pipe body. By forming the liquid nitrogen convection cooling zone in the inner pipe body and the vacuum heat insulation cavity between the inner pipe body and the outer pipe body, the liquid nitrogen can directly soak the superconducting cable for efficient heat exchange, the vacuum heat insulation cavity effectively blocks the radial conduction of environmental heat to the inner pipe body, and the heat load of the refrigeration system is greatly reduced; by electrically connecting the low-temperature end electrode and the superconducting cable and connecting the room-temperature end electrode and the low-temperature end electrode in series to form a loop, the room-temperature end electrode is avoided from directly contacting the superconducting cable, the axial heat leakage along the electrode is reduced, and one end of the liquid nitrogen cooling pipe is communicated with the inner pipe body and the other end of the liquid nitrogen cooling pipe extends to the outside through the outer pipe body, so that the stable supply and the sealing reliability of the liquid nitrogen are ensured.

The invention relates to a device (1) and a method for convectively cooling hot steel products, in particular hot rolled products (5) in a rolling mill. The device (1) comprises at least one cooling bed which comprises at least one first and at least one second vertically extending cooling bed plane (2, 3), wherein the cooling bed planes (2, 3) are formed by at least one transport device which has at least one vertical conveyor means (4) that is designed to receive a rolled product (5) from a first horizontal conveyor means (6), raise the rolled product via a first vertical conveyor section, and deposit the rolled product on a second horizontal conveyor means (4) via a second vertical conveyor section. The circulating transport device is arranged in a substantially closed housing (7) which comprises means for producing a flow of air and / or gas, as a cooling medium, through the volume enclosed by the housing (7) and means for recovering energy from the air flow and / or gas flow which is guided through the housing and which is loaded with heat of the rolled product.

This invention discloses a lead-bismuth high-heat transfer heat transfer device with rough elements arranged in a rectangular channel in the field of nuclear reaction heat transfer. From the desert side to the oasis side, it includes: a heating component with a rectangular flow channel structure inside, allowing liquid lead-bismuth alloy to pass through and heating the liquid lead-bismuth alloy inside; rough elements are arranged in the rectangular flow channel structure to simulate the actual flow channel environment; a feeding component connected to the feeding end of the heating component; and a discharging component connected to the discharging end of the heating component. The beneficial effects of this invention are: by setting rough elements on the inner wall of the flow channel plate to simulate the flow channel environment where liquid lead-bismuth alloy causes erosion and corrosion in the actual environment, the influence of flow channel roughness on the flow heat transfer characteristics of lead-bismuth alloy can be more accurately assessed. Furthermore, the modular design makes component replacement faster and the experimental efficiency higher.

The application provides a wastewater treatment device with stirring function, and relates to the technical field of wastewater treatment. The device comprises a shell and a core mixing system arranged in the shell. The core mixing system comprises a center shaft driven by a motor. A horn sleeve for collecting upper fluid is arranged on the upper part of the center shaft. The horn sleeve is connected to a right-angle pipe provided with a closing block through a collecting pipe. A bottom sleeve and a bottom ring provided with diffusion holes are connected to the bottom of an outer cavity. The lower part of the center shaft is also provided with a horn sleeve and is connected to a sleeve pipe through a circulating pipe. The outlet of the sleeve pipe is connected to a top cavity. A top sleeve and a top ring provided with diffusion holes are connected to the top cavity. A impeller, a booster wheel associated with the impeller and used for pressurizing the liquid flow in the right-angle pipe, and a stirring wheel used for destroying the laminar flow are arranged on the center shaft. In operation, forced bidirectional vertical convection is formed through two independent flow channels of upward flow and downward flow. The bidirectional vertical convection is supplemented by pressurized jet flow and anti-laminar flow stirring, so that the rapid and uniform mixing of the reagent in the full reactor depth range is realized.

This invention provides a computational method, system, and computer equipment for fluid-structure interaction heat transfer. Addressing the problem of extremely slow convergence in the later stages of long-tail iterations in existing weakly coupled algorithms, this invention proposes a two-stage decoupling acceleration strategy. The first stage employs a fluid-solid weakly coupled algorithm with an early truncation mechanism: when the global temperature rise has not yet converged, but the convective heat transfer coefficient at the interface reaches a stable convergence state first, the bidirectional fluid-solid iteration is stopped, and the current convective heat transfer coefficient is extracted. The second stage applies this convective heat transfer coefficient as a separate thermal boundary condition to the solid computational domain, stopping the flow field equation calculation and rapidly solving the solid's heat conduction equation in a unidirectional decoupled state until a complete steady state is reached. This invention cleverly utilizes the spatiotemporal differences in the convergence speed of characteristic physical quantities, eliminating redundant iterations without sacrificing engineering accuracy and significantly improving the solution efficiency of heat transfer simulation.

This invention discloses an intelligent temperature control system and method for heavy-duty truck disc brakes, relating to the field of heavy-duty truck braking systems. The control system comprises a brake disc, a micro-vortex tube array, a dual-channel rotary sealing module, a MEMS temperature-wind speed sensing network, a high-speed pressure-flow proportional valve group, and a vehicle domain controller. The MEMS sensing network collects real-time data on the brake disc friction ring temperature and convective wind speed. The domain controller predicts the temperature rise trajectory using a thermo-mechanical coupling model. When the temperature exceeds a threshold, cold-end and hot-end coordinated cooling is initiated. A pulsed airflow from the cold end sweeps tangentially across the friction surface via an air knife to strip away the hot layer, while a micro-airflow from the hot end is injected into the backplate air guide groove to eliminate thermal stress gradients. The flow rates of the two airflows are decoupled and distributed online by the proportional valve based on temperature error. This invention requires no modification to the brake caliper structure, is compatible with ABS / EBS protocols, suppresses heat fade, extends lining life, and improves braking safety margin.

This invention discloses a method and system for synergistic analysis of pollution discharge and carrying capacity in static water bodies. Based on monitoring data of static water bodies, the method uses fluid dynamics equations to simulate the transport and diffusion behavior of pollutants in the static water body, obtaining the flow velocity field. The monitoring data of pollutant concentrations are input into a neural network model to predict continuous-time pollutant concentration sequences. Specifically, a convection-diffusion response equation is established based on the flow velocity field to construct the loss function of the neural network model. The maximum carrying capacity sequence of the static water body for the pollutants is calculated to quantify the pollution carrying capacity of the static water body. A water quality dynamic balance coefficient is calculated based on the pollutant concentration sequence and the maximum carrying capacity sequence to quantify the synergistic effect of pollution discharge and carrying capacity. This invention proposes the concept of synergistic discharge and carrying capacity for the first time, realizing the comprehensive ecological performance assessment of static water bodies such as lakes and reservoirs, and providing a new quantitative calculation method for the comprehensive water quality evaluation of static water bodies such as lakes.

This invention discloses a method, system, equipment, and medium for controlling pollutant concentration in wastewater pipe networks, relating to the field of drainage system technology. The method includes: obtaining the mass flushing rate of pollutants under pipe scouring; collecting the amount of components generated by chemical reactions within the pipe; constructing a pollutant reaction model; and, based on convection diffusion, obtaining the concentration changes of sediments following wastewater, constructing a convection diffusion reaction model. The mass flushing rate, pollutant reaction model, and convection diffusion reaction model are coupled to obtain a pollutant concentration prediction coupling model. The pollutant concentration in the wastewater pipe network is predicted based on the pollutant concentration prediction coupling model, and the pollutant concentration is divided into multiple levels. Different flushing methods are selected within different levels to control the pollutant concentration in the wastewater pipe network. This invention can adopt different methods according to different actual scenarios, thereby controlling the pollutant concentration within a reasonable range.

This invention discloses a downhole porous medium combustion heater, comprising an inlet chamber shell, a combustion chamber shell, and an exhaust chamber shell. The inlet chamber shell, combustion chamber shell, and exhaust chamber shell each form an inlet chamber cavity, a combustion chamber cavity, and an exhaust chamber cavity, respectively. An air inlet is located at the top of the inlet chamber cavity, and a stainless steel wire mesh is installed at the top of the inlet chamber cavity. A first porous alumina straight-hole mesh gasket is installed at the bottom of the inlet chamber cavity. Porous alumina particles are filled between the stainless steel wire mesh and the first porous alumina straight-hole mesh gasket within the inlet chamber cavity. This invention overcomes the problems of low heating efficiency, short service life, and high energy consumption of traditional electrically heated downhole heaters, while also solving the technical bottlenecks of difficult control and low recovery rate of conventional combustion heaters. The device utilizes convective heat transfer to transfer heat to the reservoir, significantly improving the heat transfer rate and energy utilization efficiency.

This invention relates to the field of aircraft fire resistance testing technology, and discloses a device, system, and method for acquiring the surface heat flux density of a fire-resistant test specimen. The system initialization includes: total heat flux measurement (obtaining the theoretical total heat flux value q0); actual pure radiative heat measurement (setting a glass cover around the heat flux sensor without changing its position, shielding convective heat through the glass cover, and then collecting the theoretical radiative heat flux value q1 measured by the heat flux sensor); and multiplying the pre-measured emissivity of the test specimen surface by the theoretical radiative heat flux value q1 to obtain the actual pure radiative heat flux value q. r Actual heat flux calculation: Actual convective heat value q c The actual heat flux q is obtained by subtracting the theoretical radiative heat flux q1 from the theoretical heat flux q0. a Equal to the actual pure radiative heat flux value q r and actual convective heat value q c The sum of radiative heat and convective heat is achieved through precise measurement of these two heat sources under actual aircraft fire conditions, providing high-fidelity, multi-scenario, and highly consistent thermal flow data for twin experiments.

This invention discloses a real-time temperature field compensation and intelligent control method for the heat treatment process of rolls, belonging to the field of automatic control technology. The method includes: constructing a thermal coupling relationship matrix between different sections based on Fourier's law of thermal conductivity; constructing a boundary heat transfer dynamic compensation model based on Newton's law of cooling, calculating the convective heat transfer coefficient in real time and dynamically correcting the heating power; establishing a dynamic estimation model of the roll core temperature based on the lumped parameter method, solving the core temperature in real time and compensating for thermal inertia lag in advance; and solving the above models collaboratively, using the weighted sum of squares of surface temperature deviation and core temperature deviation as the objective function, to solve for the optimal heating power of each section under thermal coupling constraints. This invention, through the combined application of classical thermophysics theories, solves the technical problems of thermal inertia lag, large axial temperature difference, and difficulty in controlling the core-surface temperature difference during the heat treatment process of rolls, achieving precise layered and zoned control of the temperature field, and significantly improving the quality of heat treatment.

The utility model relates to mixed reaction tank technical field discloses a kind of composite carbon source multistage dynamic mixed reaction tank, including tank body, the inside of tank body is sequentially provided with primary premixing shear cavity, secondary convection variable-diameter cavity and tertiary oscillation homogenizing cavity from top to bottom, the top of primary premixing shear cavity is fixedly provided with stator ring, the surface of stator ring is equipped with blanking hole, the inside of secondary convection variable-diameter cavity is fixedly provided with flow guide cylinder, the inner wall of flow guide cylinder is equipped with variable-diameter spiral flow guide passage, the inside of tertiary oscillation homogenizing cavity is rotatably provided with reciprocating swing flow guide plate;Rotor disc and stator ring cooperate to produce high-strength shear, turbulence and cavitation effect, directly smash high-viscosity component (such as molasses) and unsoaked solid particles, avoid lump accumulation;High-speed impact and forced convection realize multi-component preliminary homogenization, solve the problem of uneven dispersion of traditional equipment.

This invention relates to the field of heat flux technology and provides a novel wall heat flux partitioning model based on bubble merging behavior and the evaporation region. Spatially, the model divides the wall into a non-bubble-affected region, a nucleation point region, a bubble sliding region, and an evaporation region. Temporally, it divides the bubble nucleation cycle into bubble waiting time and bubble generation time, and the bubble sliding cycle into transient heat transfer-dominated time and one-way convective heat transfer-dominated time. Based on this spatiotemporal partitioning, the total wall heat flux is composed of quenching heat transfer caused by bubbles leaving the nucleation point, transient heat transfer caused by sliding bubbles, evaporation heat transfer during bubble growth, one-way convective heat transfer in the non-bubble-affected region, and steam heat transfer in the evaporation region. The total wall heat flux is expressed as: [Formula omitted for brevity]. This model can accurately predict the wall heat flux during the nucleation boiling stage and successfully predict the occurrence of the critical heat flux density.

The utility model belongs to the technical field of fermentation tank, concretely relates to a new -type stirring paddle structure of fermentation tank, including stirring subassembly and setting on stirring subassembly supplementary stirring subassembly, stirring subassembly and supplementary stirring subassembly all set up in the fermentation tank, and stirring subassembly includes stirring shaft, link shaft and base, link shaft is detachably connected with stirring shaft, and installs defoaming paddle on link shaft, link shaft is connected with power shaft on the fermentation tank. The utility model discloses through the cooperation of stirring subassembly and supplementary stirring subassembly, can make two groups of swept -back type stirring paddle of stirring subassembly form axial circulation main body flow field, and its swept -back type stirring paddle can produce stable up and down convection, and at the same time, supplementary stirring subassembly is used to the shear inside and the turbulence mixing of the near area of the inner wall of the fermentation tank, thereby the overall mixing flow effect in the fermentation tank is significantly improved, the dissolved oxygen transfer efficiency is effectively improved, and the temperature gradient in the fermentation tank is reduced.

This invention relates to the field of reactor corrosion product deposition technology, and discloses an apparatus and method for preparing boiling deposits based on phase change convection. The apparatus includes: a circulating loop main body; a tubular sample, which is fixedly assembled within the test area of ​​the circulating loop main body using a sealing component, and a heating rod is inserted into the tubular sample; a test section cooler, which is fixedly installed outside the test area of ​​the circulating loop main body, and a guide plate is fixedly installed inside the test area of ​​the circulating loop main body to separate the fluid and guide natural convection; a water storage section cooler, which is fixedly installed outside the water storage area of ​​the circulating loop main body for condensing steam; and a detection component, which is arranged on the circulating loop main body for monitoring temperature and pressure parameters within the loop. By synergistically driving fluid circulation through phase change convection and natural convection, the system eliminates the need for high-temperature, high-pressure pumps and other power input components, simplifying the system structure and reducing manufacturing costs and failure risks.

The application discloses a filter tank with self-cleaning function of floating objects, relates to the technical field of water surface purification, and comprises a tank body, wherein a chute is arranged on the side wall of the tank body, and the filter tank further comprises a flow rate detection mechanism, a self-flow rate adjusting mechanism arranged at the bottom of the tank, and a foreign matter collecting mechanism arranged at one side of the bottom of the tank. The structure of the bottom of the existing tank is improved and upgraded, the 'gravity guidance of terrain drop' and 'natural convection caused by temperature difference' are combined, and the continuous circulation of the water body of the tank is realized. In this way, the water body has the self-flowing effect without power supply, the flow rate of the water body is controlled through the temperature difference, the position of the water body is controlled within a certain range, the user can normally use the tank, and the bottom deposits and surface floating objects can be uniformly collected during use, so that the labor of the treatment personnel is reduced.

This utility model discloses a highly applicable continuous reaction overflow tank, comprising a set of multi-stage series reaction tanks (1), with adjacent reaction tanks (1) connected by an overflow pipe (2). Each reaction tank (1) is provided with a feed inlet (3) and a stirring device (4). The reaction tank (1) is also provided with a flow guiding device (5) that cooperates with the overflow port (11a). The flow guiding device (5) includes a flow guiding hood (51), which is closed at the upper end and open at the lower end. Inside the hood, a set of cross-arranged flow guiding plates (52) are provided from bottom to top, so that the inner cavity of the flow guiding hood (51) forms an S-shaped flow guiding channel (53). The advantages of this utility model are that it avoids the direct impact of the feed on the overflow port, offsets the damage of the overflow pipe to the flow field, satisfies the requirements of uniform material mixing and reaction, achieves continuous reaction, improves production efficiency and reaction effect, and reduces the content of valuable metal lithium ions in the waste residue.

This utility model relates to the field of air showers, specifically a portable dust removal air shower, including a mounting frame with a processing box fixedly connected to the top of the frame. The processing box has two symmetrically arranged mounting cavities. Connecting grooves are provided on both sides of the inner wall of the processing box. It also includes a conveying mechanism, a forward and reverse reversing mechanism, a blower, a guiding mechanism, an air shower mechanism, and guide components. This application utilizes a rotary motor and a conveying device to facilitate the transport of goods. A blower and connecting hoses facilitate the introduction of air into an arc-shaped tube, allowing air to be blown out from the air outlet at the bottom of the arc-shaped tube. Two sets of connecting hoses allow convective air to be blown out from the air outlet at the top of the arc-shaped tube. A three-phase asynchronous motor, a screw, and a guide rod cause a sliding plate to drive the arc-shaped tube to reciprocate within the processing box, allowing the arc-shaped tube to move with the goods and effectively perform air shower treatment.

The present application relates to the technical field of thermal power generation, and discloses a method for optimizing and improving intelligent flue gas flow field of a thermal power plant air and smoke system, which comprises collecting multi-dimensional flow field original data in a target flue section; extracting flow state characteristics of the flow field original data, identifying a flow field distortion area and analyzing distortion characteristic parameters; inputting the distortion characteristic parameters into a flow guide decision model to generate a basic flow guide control instruction set; executing the instruction set and continuously collecting real-time flow field response data in the process; comparing the response data with an expected flow field benchmark, optimizing the basic instruction set in real time through a flow field dynamic corrector to generate a target flow guide control instruction set; and driving a flow guide execution mechanism to move to a target pose according to the target instruction set. The present application realizes accurate identification and dynamic control of the flue gas flow field by combining flow state characteristic extraction with closed-loop feedback optimization, effectively improves flow field uniformity, reduces flow resistance, and improves the safety and economy of the air and smoke system operation.

The application belongs to the technical field of equipment insulation influence evaluation considering streamer discharge, and provides a streamer discharge simulation modeling method, system, medium and equipment of charge behavior under complex working condition coupling, which is based on the theory of shearing separation of double electric layer, and an oil-paper-interface multi-region charge dynamic transport simulation model is established by coupling oil flow convection term, shearing term and temperature effect; based on the established transport simulation model, the whole evolution process of streamer discharge from diffusion, longitudinal evolution to transverse migration under the coupling of electric field, fluid field and thermal field is simulated by combining the charge injection and extraction boundary conditions at the electrode, the charge density distribution and electric field strength distribution data in the streamer evolution process are obtained; the streamer evolution law is analyzed based on the charge density distribution and electric field strength distribution data, so as to evaluate the oil-paper insulation state or optimize the oil-paper insulation structure. The coupling effects of electric field, fluid field and thermal field are comprehensively considered, and the actual operating condition of the converter transformer is more accurately simulated.

The present application relates to the technical field of waste heat collection, and particularly relates to a diesel generating set waste heat collection device and a method thereof. The technical problem to be solved is to provide a diesel generating set waste heat collection device which can efficiently recover waste heat and has good gas-solid separation and self-cleaning capacity. The technical scheme of the present application is as follows: comprising a flue gas pipe and the like; a bend is arranged on the flue gas pipe; one end of the bend is connected with a waste heat box through a flange; a pipeline is installed in the waste heat box; the pipeline is sealedly connected at both ends and penetrates through the waste heat box; the lower end of the pipeline is a water inlet, and the upper end is a water outlet; and helical fins are installed on the outer wall of the pipeline. In the present application, the helical fins are used to guide the formation of helical air flow on the flue gas side, and the clockwise and counterclockwise alternating helical water channels are used to generate vortex flow on the water side, so that the two work together to greatly improve the convective heat transfer coefficient and heat exchange area, and significantly improve the waste heat recovery efficiency.

This utility model relates to a laminar flow circulation impeller for a reactor, comprising an impeller shaft, on which a position-adjustable connecting ring is detachably mounted, and the impeller shaft and the connecting ring are connected and fixed by fastening bolts; a radially arranged fixing rod is fixedly connected to the connecting ring, and an extension rod with an adjustable position relative to the fixing rod is connected to the fixing rod, with impeller blades fixedly connected to both the fixing rod and the extension rod; the impeller blades are provided with guide holes penetrating the impeller blades. The connecting ring, carrying the impeller blades, can move along the axis of the impeller shaft, thereby changing the laminar flow position of the impeller blades in the reactor and adjusting the distance between the flow layers stirred by adjacent impeller blades. Furthermore, the detachable nature of the connecting ring allows the number of connecting rings on the impeller shaft to be increased or decreased according to the stirring needs of the reactants in the reactor, which is beneficial for the uniform mixing of reactants, improves convection during stirring, and increases the stirring and mixing efficiency.

The present application provides a kind of based on Rectified Flow and convection-diffusion heat transfer inversion earth-rock dam leakage channel positioning method;Method obtains along dam temperature profile sequence and water level, air temperature, sunshine state, and establishes mileage-engineering coordinate mapping;Rectified Flow network based on state information is used to generate no leakage reference temperature distribution;With the difference between measured and reference, construct and baseline correction local temperature deviation;Along the mileage, candidate position is generated by extracting abnormal section, and convection-diffusion heat transfer inversion is used to impose local convection enhancement at candidate, generate candidate temperature deviation response, select optimal position with spatial profile and time trend consistency score, and determine whether leakage or not with absolute threshold and difference threshold;Optimal mileage is mapped to dam engineering coordinate;The present application combines data-driven and mechanism model, suppresses working condition and global drift interference, improves positioning accuracy and reliability, and is suitable for earth-rock dam leakage monitoring and operation early warning.