1387 results about "Mixed flow" patented technology

The invention discloses flexible intelligent manufacturing equipment, which comprises a rack, a plurality of working modules, a detachable fixing mechanism, a module position detection unit and a control unit, and is characterized in that the module position detection unit is used for detecting the positions of the working modules on a mounting surface; the control unit is used for generating a position adjusting signal according to module data collected by the module position detection unit, and all the module fixed interface groups and the standardized fixed interface groups have the same matching size and connection form so as to realize interchange of working modules of the same type or different types. The problems that a traditional equipment module is tedious to replace and insufficient in positioning precision are effectively solved, the downtime can be remarkably shortened, the problems of material conveying clamping stagnation, mechanical interference, machining precision reduction and the like caused by module position deviation are solved, and the high-flexibility requirement of multi-variety mixed flow production can be further met.

The invention discloses a deep-sea mining multiphase flow particle conveying prediction and regulation method based on flow pattern recognition. The method comprises the steps that pressure, flow, bubble or liquid drop volume fractions and solid particle volume fractions at different positions in a pipeline are periodically collected through collection equipment; according to the pipe diameter and the gas-liquid ratio and the mixing flow speed obtained through calculation, a pre-built-in flow pattern division algorithm is called, and bubble flow, slug flow, vortex and annular flow are distinguished; solving the volume fractions of gas-liquid discrete units of any diameter in different flow patterns; the conveying speed of solid particles in the multiphase flow is obtained according to the gas-liquid dispersed phase volume fraction; and whether the obtained solid particle conveying speed reaches a preset optimal interval or not is judged, and the flow pattern or the gas-liquid ratio of the multiphase flow in the pipeline is controlled according to the result so as to adjust the solid particle conveying speed. The mining efficiency of submarine minerals can be improved, a dangerous flow pattern formed by an unreasonable gas-liquid distribution ratio can be avoided, and efficiency and safety are both considered.

The invention belongs to the technical field of fluid machinery, and particularly relates to a blade-adjustable high-specific-speed mixed-flow pump blade optimization design method which comprises the following steps: S1, establishing an impeller optimization design model; s2, an impeller parametric modeling method; and S3, approximate model establishment and impeller parameter iterative optimization. According to the method, radial distribution of parameters such as two-dimensional section chord length and pitch angle is given, blade inlet and outlet edge shapes are determined, blade modeling is completed, impeller parameters are optimized on the basis of numerical calculation, machine learning and a numerical optimization algorithm, mixed-flow pump impeller design is conducted through the method, the hydraulic performance of a mixed-flow pump can be remarkably improved, and the service life of the mixed-flow pump is prolonged. Dependence on design experience of designers is reduced, and the method has the advantages of being high in design efficiency and low in cost.

The invention provides a concentric circle circulating flow sewage treatment system based on electric strengthening and a control method. The system comprises a concentric circle circulating flow reactor, a microbial electric strengthening unit and an AI driving control unit, a concentric circle double-ring gallery and multi-point water inlet and multi-point backflow achieve a complete mixed flow type flow state of transverse plug flow and longitudinal circulation flow, the concentric circle circulation flow state is coupled with the microbial electric strengthening unit to form gas-liquid-solid-electricity four-phase turbulent flow to break a mass transfer boundary layer, and the contact efficiency and the mass transfer efficiency of sewage and microorganisms are strengthened. The anodes and the cathodes of concentric circle structures are closely arranged to generate electric field gradient to regulate and control spatial distribution of microbial communities, dynamic polarity switching is achieved through an AI system, the reactor is endowed with the self-adaptive capacity for coping with water quality fluctuation, and the sewage carbon, nitrogen and phosphorus removal treatment efficiency is improved in a breakthrough mode.

The invention discloses a quantitative recognition device for the number and size of bubbles at a rotating impeller of a multiphase pump. The quantitative recognition device comprises a two-phase flow experiment system, the multiphase pump, a high-speed camera, a light source and the like. The preprocessing and data analysis system and the deep learning system are arranged in the computer; the two-phase flow experiment system and the image acquisition system are electrically connected with the computer through lines. The invention further discloses a quantitative recognition method for the number and size of the bubbles at the rotating impeller of the multiphase pump. According to the method, the problems of low blistering recognition precision, low efficiency and large error caused by the existing manual measurement method are solved, and a reference method is provided for exploring the influence of gas distribution at the impeller in the multiphase pump on pump operation and optimizing design of the multiphase pump.

The utility model relates to the technical field of semiconductor production, in particular to a pre-passing device and a vapor deposition system.The pre-passing device comprises a packaging container, a carrier gas inlet pipe, a mixed flow pipe, a buffer assembly and a tail gas treatment system, and the packaging container is provided with a packaging inlet and a packaging outlet which are communicated with an inner containing cavity; the gas outlet end of the carrier gas inlet pipe is communicated with the packaging inlet; the gas inlet end of the mixed flow pipe is communicated with the packaging outlet, and carrier gas carrying a precursor flows in the mixed flow pipe; the buffer assembly is used for collecting the precursor carried in the carrier gas, the gas inlet end of the buffer assembly is communicated with the gas outlet end of the mixed flow pipe, and the gas outlet end of the buffer assembly is communicated with the tail gas treatment system. On the premise that the flow of the precursor is stable, waste of the precursor in the pre-passing process is reduced, the utilization rate of the precursor is increased, and the production cost is reduced.

The invention discloses a shaping scheduling method and device for vehicle-mounted mixed traffic, a storage medium and equipment, and the method comprises the steps: dividing different traffic into a first type of traffic, a second type of traffic and a third type of traffic according to the source and importance of a control domain of vehicle-mounted network traffic; dividing the first type of traffic into a plurality of priorities, and periodically scheduling the first type of traffic according to the sequence of the priorities from high to low and the gate control switch state information list; dividing the second type of traffic into a first sub-type of traffic and a second sub-type of traffic, and alternately scheduling the two sub-type of traffic according to a preset credit adjustment rule; sequentially scheduling the third-class traffic of different queues according to the sequence of queue generation, and when an idle time slot exists between the current traffic queue of the third-class traffic and the adjacent next traffic queue, scheduling the third-class traffic according to a preset scheduling rule. And reading traffic from a plurality of to-be-scheduled traffic queues adjacent to the current traffic queue, and filling the traffic into an idle time slot for scheduling.

The invention discloses a water turbine guide vane shaft-top cover rub-impact coupling system vibration characteristic analysis method which comprises the following steps: S1, establishing a reduction dynamic model of a guide vane shaft-top cover rub-impact coupling system by adopting a finite element method in combination with a fixed interface modal synthesis method; s2, analyzing an influence rule of a modal truncation number, a friction coefficient and a water flow surface load on first three orders of prestress modal characteristics of the guide vane shaft-top cover rub-impact coupling system based on a reduction kinetic model; s3, analyzing an influence rule of a near load end contact state, a near-far load end contact state and a friction coefficient on vibration response and spectral characteristics of the guide vane shaft-top cover rub-impact coupling system when the reduction kinetic model is subjected to harmonic excitation; and S4, evaluating whether the mixed-flow water turbine operates stably and safely based on the steps. By analyzing the vibration characteristics of the guide vane shaft-top cover rub-impact coupling system of the mixed-flow water turbine, the structural health state and fault of the mixed-flow water turbine are monitored and diagnosed.

The utility model relates to the technical field of spiral-flow aerators, in particular to a multi-nozzle large-flux spiral-flow aerator which comprises an aeration cylinder body and a segmentation assembly, the segmentation assembly is arranged inside the aeration cylinder body and comprises a limiting support, the limiting support is fixedly connected to the two sides of the aeration cylinder body, and the limiting support is arranged on the aeration cylinder body. A transmission impeller is arranged in the aeration cylinder body, and the top of the transmission impeller is fixedly connected with a transmission shaft. According to the multi-nozzle large-flux spiral-flow aerator, the dividing assembly and the blocking assembly are installed, the bubble generator and sewage gas generate tiny bubbles, along with the rotation effect of the multiple dividing blades, the size of the tiny bubbles in the aeration cylinder body is reduced, the bubbles become smaller and smaller, and due to the vacuum negative pressure at the bottom end of the aeration cylinder body, the aeration effect is better. And the jet mixed flow can enter the aeration process again for circulation, so that the residence time of tiny bubbles in sewage is prolonged, the utilization rate of oxygen is improved, and the aeration cylinder body is prevented from being blocked.

The utility model provides a reaction tank for heat transfer fluid production. The reaction tank comprises a reaction kettle main body, an omnidirectional flow mixing assembly and a convection ring seat, a linear actuator is arranged on the top surface of the reaction kettle main body and drives the omni-directional flow mixing assembly to do lifting motion in the reaction kettle main body. The omni-directional flow mixing assembly comprises a circulating guide cylinder, a driving machine cylinder and a centrifugal impeller, the flow speed of liquid in the circulating guide cylinder is increased through high-speed rotation of the centrifugal impeller, and high-speed conveying and flow mixing stirring of the liquid are achieved. The convection ring seat is positioned at the bottom end of the omnidirectional flow mixing assembly, and liquid convection spraying is performed through a plurality of spraying holes, so that the liquid is fully mixed in the reaction kettle main body, and the stirring uniformity of the liquid is ensured. The liquid mixing device can realize liquid layered mixing in the vertical direction, avoids local uneven mixing, improves the mixing efficiency of heat conduction liquid, and is suitable for efficient stirring of various complex liquids.

The present invention relates to the technical field of fluidized bed combustion furnaces, and in particular provides an intelligent and clean biomass fluidized bed combustion furnace. The intelligent and clean biomass fluidized bed combustion furnace includes an installation component, a mixed flow component, a feed component, a combustion furnace and an exhaust gas circulation component. The present invention can provide a uniform and continuous gas supply flow and biomass fuel to the combustion furnace, ensure the uniformity of the temperature of the combustion process in the combustion furnace, and use the gas supply flow to preheat and dry the biomass fuel, improve the combustion efficiency, reduce the influence of moisture on the combustion process, reduce fuel consumption and flue gas emissions, and improve the removal efficiency of sulfur dioxide in the flue gas, reduce the emission level of sulfur dioxide, and effectively control the generation of nitrogen oxides, improve energy efficiency, reduce energy waste, ensure that the combustion process is environmentally friendly and meets emission standards, and separate particulate matter from the initial combustion smoke generated by combustion, significantly reducing the pollution concentration of particulate matter in combustion emissions, meeting environmental protection requirements.

The invention relates to the technical field of nitrogen and oxygen mixed flow, and discloses a large-flow high-precision nitrogen and oxygen mixed flow system. The system comprises a gas attribute feature library construction module for periodically collecting historical component data to generate a feature library containing flow and concentration reference values; the real-time gas component monitoring module is used for acquiring the real-time component concentration and flow value of the current nitrogen and oxygen; the mixed flow deviation analysis module is used for generating a component deviation matrix according to the reference value and the real-time value; the dynamic parameter optimization module retrieves the matched flow fluctuation data set, and when the dispersion exceeds a threshold value, the proportion of the total duration from the historical start to the current moment is calculated to serve as the gas compensation proportion; and the mixed flow execution control module is used for adjusting input proportioning parameters of nitrogen and oxygen from a historical starting moment based on the compensation proportion. According to the system, all the modules work cooperatively, and high-precision mixing of nitrogen and oxygen under large flow is achieved.

Seed on-demand system for granular material comprising at least one storage container for granular material, at least one fan to provide a conveyor air flow, and a distributing device with a distributor housing which is designed to receive material from the storage container by means of a material inlet opening and has a conveyor air opening to direct the conveyor air flow in the direction of the material received to generate a mixed flow of conveyor air and material, and at least one distributing segment which forms at least one first conduit with a first receiving opening and a first outlet opening, wherein the conduit is arranged to receive at least a part of the mixed flow by means of the receiving opening and to discharge it from the outlet opening. To avoid disturbances in the distribution of the material and simultaneously generate the mixed flow in an energy-efficient manner, it is provided that at least one stirring element is arranged between the material inlet opening and the first receiving opening to loosen the material in the area where the conveyor air flow is directed onto the material.

The invention relates to the technical field of flue gas purification, in particular to flue gas desulfurization, denitrification and dust removal separation equipment which comprises a separation mechanism, a laminar flow reactor, a mixed flow impeller and a desulfurization reactor. The separation mechanism is connected with the air inlet pipeline; the laminar flow reactor is connected with the separation mechanism; the mixed flow impeller is connected between the separation mechanism and the laminar flow reactor; the desulfurization reactor is connected with the laminar flow reactor; oily particles are preliminarily separated through centrifugal force, after flue gas internally rotates and ascends, a secondary filter screen is driven by the ascending force of the flue gas to shake at high frequency to secondarily filter the oily particles, meanwhile, the oily particles are separated again through the internal rotation force of the flue gas, and the flue gas and ammonia gas are fully mixed and pre-distributed through a mixed flow impeller, so that the denitration efficiency is improved; the problems that the catalyst is damaged due to the fact that oily particles in flue gas cannot be effectively filtered, and the denitration efficiency is reduced due to non-uniform distribution when the flue gas reaches a fluidized bed are solved.

A pump assembly includes a housing having a first end, a second end, and an axis extending through, the housing accommodating fluid flow therethrough. A pump assembly includes a pump coupled to the first end of the housing, the pump including an inlet in fluid communication with the housing, a motor configured to drive an output shaft, and a mixed-flow impeller coupled to the output shaft and disposed adjacent to the inlet, the mixed-flow impeller having an inlet diameter and an outlet diameter that is greater than the inlet diameter, the mixed-flow impeller configured to output fluid at an acute angle relative to the axis. A pump assembly includes a handle coupled to the second end of the housing and including an outlet in fluid communication with the housing, the handle also including a battery receptacle electrically coupled to the motor and configured to receive a battery pack.

The invention discloses a crushing and feeding device and a deep-sea mining conveying system, the crushing and feeding device comprises a machine body and a hydraulic motor, the machine body comprises at least one roller, the roller sleeves a corresponding roller shaft, and the roller shaft is rotatably connected to the machine body; at least three disc blades with the same specification are arranged in the axial direction of the roller at equal intervals, and at least one tool bit is arranged on each disc blade; plugs are arranged on the front and rear vertical surfaces of the machine body and are matched with gaps between the rollers and the vertical surfaces of the machine body; and a power output shaft of the hydraulic motor is connected with the roller shaft. The deep-sea mining conveying system comprises a relay station, a mixed-flow pump, a lifting hard pipe and a mother ship, the relay station comprises a feeding cylinder, a feeding pipe and the crushing feeding device which are sequentially connected from top to bottom, and a lower opening of the feeding pipe is connected with the lifting hard pipe. The crushing and feeding device provided by the invention has the advantage of high crushing ratio, and the deep-sea mining and conveying system provided by the invention has the advantages of being environment-friendly and controllable in solid-liquid ratio of ore pulp fed by a hard pipe.

The invention discloses an integrated tower-shaped hydrogen production gas-liquid treatment device and method, the integrated tower-shaped hydrogen production gas-liquid treatment device comprises a wave stabilizing section, an electrolyte cooling section, a gas-liquid separation section, a gas washing section, a gas cooling section and a fog drop separation section which are sequentially communicated from bottom to top, the wave stabilizing section is internally provided with a wave stabilizing device, and the bottom of the wave stabilizing section is provided with an electrolyte outlet; a first tubular heat exchanger is arranged in the electrolyte cooling section, a first cooling medium inlet and a first cooling medium outlet are formed in the side face of the electrolyte cooling section, a dispersing disc and a gas rising device are arranged in the gas-liquid separation section, a tangential gas-liquid mixed flow inlet is formed in the side face of the gas-liquid separation section, trapping filler is arranged in the fog drop separation section, and a gas exhaust port is formed in the top of the fog drop separation section. The tangential gas-liquid mixed flow inlet is formed in the side face of the gas-liquid separation section, a gas-liquid mixture enters the gas-liquid separation section in the tangential direction, gas and electrolyte are separated by means of different centrifugal forces borne by gas and liquid phases, alkali mist and undissolved particles carried in the gas are reduced, and the separation efficiency is improved.

The invention provides a grain drying device, relates to the field of grain drying equipment, and aims to solve the problems of high hot air resistance, high fan energy consumption and high grain drying cost due to the fact that inlet air adopts one-in and one-out downstream flow or countercurrent flow in the conventional grain drying process. In order to solve the problems of low tempering frequency, low drying efficiency and poor grain quality due to adoption of a mixed flow mode in the existing grain drying process, three adjacent rows of corner boxes are adopted as a group, the middle row of corner boxes in the same group forms an air inlet channel, the upper row and the lower row of corner boxes in the same group are exhaust channels, and the thickness of a grain layer between the adjacent rows of corner boxes is reduced, so that the wind resistance is reduced, and the grain quality is improved. A tempering area is formed between every two adjacent corner combining boxes, multiple times of tempering of the grains are achieved, heat is transferred from outside to inside, moisture is transferred from inside to outside more sufficiently, and therefore the quality of the dried grains is guaranteed.

The invention relates to the technical field of electroplating baths with flow mixing mechanisms, and discloses an electroplating bath with a flow mixing mechanism, the electroplating bath comprises a base and a bath body, a stirring assembly is arranged in the bath body, a heating and cooling assembly is arranged at the middle position of the top of the base, and a cleaning assembly is arranged at the rear position of the top of the base; through the arranged stirring assembly, after a worker pours electroplating liquid into the tank body, a second motor is started to drive a rotating gear to do circular motion on an inner gear of an inner gear ring, stirring blades are driven to stir the electroplating liquid in the tank body, and meanwhile, the worker starts a first motor to drive a threaded rod to rotate; the movable block slides back and forth on the outer walls of the threaded rod and the sliding rod, the stirring piece is driven to mix and stir the electroplating liquid in different areas in the tank body, comprehensive mixing of the electroplating liquid in the whole space of the tank body is achieved, the mixing uniformity of the electroplating liquid is improved, and it is guaranteed that the components and the concentration of the electroplating liquid in the tank body are basically consistent.

The invention discloses a composite rectification control and guidance method for improving the mixing flow state of a river channel intersection area. The method comprises the following steps that in the flood season and the dry season, the river width and the water depth of a branch flow intersection and the river width and the water depth of a downstream section of a main flow intersection are surveyed respectively; inner elliptic arc treatment is conducted on the positions, close to the intersection position of the water flow separation area embankment line and the main flow intersection opening, of the branch flow intersection openings; outer elliptic arc treatment is conducted on the intersection position, away from the water flow separation area embankment line and the main flow intersection opening, of the branch flow intersection opening; a lifting spur dike is arranged at the position of a water flow acceleration area at the downstream of the main stream intersection; in the dry season, the spur dike is lifted; in the flood season, the spur dike descends, and main stream flood discharge is facilitated. The flood discharge efficiency of the river channel in the flood season is improved, the flood threat faced by dikes on the two banks in the flood season is reduced, and the concentration of water pollutants on the bank side of the downstream water flow separation area of the intersection is reduced.

The invention relates to the technical field of air purification, and discloses a space air particle differentiation system and a control method thereof.The space air particle differentiation system comprises an air particle separation module and a control module, the air particle separation module comprises an air inlet, a cyclone separation barrel and a detachable dust collection barrel, the cyclone separation barrel separates particles in air through centrifugal force classification, and the separated particles fall into the bottom dust collection barrel; the ultraviolet catalysis module comprises an ultraviolet reaction chamber, the inner wall of the ultraviolet reaction chamber is coated with a photocatalyst, and a UV-C light source is configured and used for decomposing organic pollutants and microorganisms; the electron-ozone reaction module comprises a mixed flow pipeline fan and an exhaust port, the mixed flow pipeline fan forms negative pressure airflow in the system, and purified air is exhausted through the exhaust port. Through cooperation of cyclone separation, ultraviolet catalysis and electron-ozone reaction, large particles are removed through cyclone separation, organic matter is decomposed through ultraviolet catalysis, microorganisms and superfine particles are oxidized and decomposed in a reaction chamber through electron flow and ozone, the maintenance period is prolonged, and efficient consumable-free purification is achieved.

The invention provides a portable bladeless fan which is characterized in that a first air inlet part is arranged on the rear side, a first air outlet part is arranged on the front side, and the first air inlet part and the first air outlet part are communicated in a shell; the pressurizing piece is connected with the front side of the shell, the pressurizing piece is provided with a negative pressure channel, and the negative pressure channel guides air on the radial outer side of the shell to the radial inner side of the shell; the mixed flow fan is located in the shell and connected to the rear side of the pressurizing piece, and the mixed flow fan rotates around a rotating shaft to generate airflow; a pressurizing flow guide channel is formed between the mixed flow fan and the shell and between the pressurizing piece and the shell, air enters the pressurizing flow guide channel from the first air inlet part, pressurized mixed flow is formed in the pressurizing flow guide channel and then is exhausted from the first air outlet part, and meanwhile air on the radial outer side of the shell is driven to flow through the negative pressure channel and is guided out from the radial inner side of the shell. On the basis that it is ensured that the first air outlet part exhausts air with enough air volume and air pressure, the air volume and the air supply distance are further increased through air guiding of the negative pressure channel.

The utility model relates to the technical field of cyclone separators, in particular to a slug flow self-adaptive axial flow type gas-liquid cyclone separator which comprises a reducing outer cylinder, a vertical inner cylinder, a guide impeller, a horizontal inlet pipe and a side line guide pipe. One end of the vertical inner cylinder is connected with the bottom of the variable-diameter outer cylinder, and the other end of the vertical inner cylinder is connected with the horizontal inlet pipe through a right-angle bent pipe; one end of the lateral line conduit is connected with the horizontal inlet pipe, and the other end of the lateral line conduit is connected with the variable-diameter outer cylinder; and a flow guide impeller is arranged in the vertical inner cylinder. According to the utility model, gas with pressure is transferred into the variable-diameter outer cylinder by adopting the side line guide pipe, so that the pressure in the cylinder body is increased to a certain extent, the pressure difference between the cylinder body and the horizontal inlet pipe is reduced, slug flow is prevented from being formed from an inlet, and gas and liquid can enter the separator in a small-slug flow or mixed flow state. The slug flow can be weakened or even eliminated without external intervention, so that the separation performance of the axial flow type gas-liquid separator under a complex flow pattern is improved.

The invention relates to the technical field of temperature and pressure reducers, in particular to a temperature and pressure reducer for combined heat and power generation, which comprises a delivery pipe, a pressure reduction steam valve, a temperature reduction mechanism, an adjusting mechanism and a filtering mechanism, the pressure reduction steam valve is fixedly mounted at the output end of the delivery pipe, and the pressure reduction steam valve is used for reducing pressure of steam in the delivery pipe; the temperature reduction mechanism is fixedly installed at the output end of the pressure reduction steam valve and used for spraying temperature reduction water to steam subjected to pressure reduction through the pressure reduction steam valve for temperature reduction, and the adjusting mechanism is fixedly installed in the temperature reduction mechanism and used for adjusting the temperature reduction water spraying angle of the temperature reduction mechanism. According to the temperature and pressure reducer for combined heat and power generation, by arranging the temperature reducing mechanism, the adjusting mechanism, the extruding mechanism and the filtering mechanism, the annular pipe can be driven to swing in a reciprocating mode, so that temperature reducing water in the annular pipe can be sprayed into steam from the nozzles at different angles to form crossed mixed flow, the original flowing state of the steam can be broken, and then the mixing efficiency is improved.

The invention provides a mixed flow velocity and flow measuring device and method, and particularly relates to the technical field of measuring instruments, and the device comprises a gas mixing assembly, a flow field optimization assembly, a flow velocity sensing assembly and a signal processing assembly. The gas mixing assembly comprises a differential channel mixer and a mixing cavity, and gas premixing is achieved. The flow field optimization assembly comprises a plurality of air duct partition plates and straight pipe sections, and the mixed gas conveying pipeline is divided into a plurality of independent divided air ducts; the flow velocity sensing assembly comprises a rectification assembly and a pressure sensing assembly, the rectification assembly comprises a pore plate and / or a grid, and the pressure sensing assembly comprises a plurality of uniformly distributed pressure sensing elements; the signal processing assembly comprises a differential pressure sensing transmitter, a static pressure sensing transmitter, a temperature sensing transmitter, an atmospheric pressure sensing transmitter and a data processing module. The pressure sensing element detects differential pressure signals, the differential pressure sensing transmitter converts the signals, the data processing module calculates the average flow velocity and flow of the mixed gas based on the signals and measurement data, and the measurement precision and accuracy are improved.

The invention relates to the technical field of rain and sewage diversion, in particular to a rain and sewage diversion optimization method based on combination of terrain gravity and a pipe network, in the rain and sewage diversion optimization method, slope calculation, flow gradient analysis and section resistance matching are combined, a rain and sewage mixed flow trend and a pipeline full flow section are accurately recognized, drainage capacity distribution is optimized, and the rain and sewage diversion efficiency is improved. According to the method, a slope imbalance section and a discharge capacity difference area can be recognized in advance through transmission capacity calculation and flow velocity gradient analysis, data support is provided for load distribution optimization, a Markov switching system is combined with flow direction transfer rate calculation and pressure fluctuation analysis, the system adjusts the flow direction based on dynamic changes of different discharge modes, and the flow direction transfer rate calculation and pressure fluctuation analysis are combined. The influence of burst flow impact is reduced, a dynamic flow direction adjusting strategy is constructed through a hidden Markov model, self-adaptive matching is formed between flow direction change analysis and a diversion transfer strategy, the accuracy of rainwater and sewage diversion is improved, regulation and control error calculation is combined with flow direction equilibrium adjustment, and setting of switching points and overflow adjusting parameters is more flexible.

An outdoor power machine comprises a chassis, a base plate connected to the chassis and a fan mounted to the base plate, the fan includes a housing and an impeller, the housing has an inlet end and an outlet end, the impeller is rotatably mounted in the housing, and the impeller guides airflow within the fan having both a radial velocity component and an axial velocity component.

The invention belongs to the technical field of metal materials and radiation protection, and particularly relates to a preparation method of thermal neutron shielding steel. According to the method, efficient spray forming of the B4C / 304 stainless steel composite material is achieved through a gas-solid two-phase flow driving mechanism under the negative pressure environment, B4C ceramic particles are evenly dispersed and embedded into a 304 stainless steel matrix, and due to the strong driving force of gas-solid two-phase flow, firm interface bonding is formed between the B4C particles and the matrix. According to the process, gas atomization and solid-phase medium particles are combined, a gas-solid two-phase mixed flow is formed, the atomization efficiency is greatly improved, the powder particle size is refined, reinforced phase distribution is optimized, and a new way is opened up for preparation of the high-performance thermal neutron shielding steel composite material.

The invention discloses a mixed-flow type runner welding device for a water turbine, and belongs to the technical field of welding devices. The welding machine comprises a main body welding machine and a locking mechanism, the locking mechanism used for disconnection protection is arranged in one side of the surface of the main body welding machine, and the welding machine has the advantages that a failed mechanical arm can be automatically limited, so that the possibility that the mechanical arm rotates and droops at will due to rotation failure is avoided; automatic locking of the ratchet wheel structure can fix the joint position at the moment of rigidity loss, it is ensured that welding is kept on an original welding track, welding size deviation caused by the fact that the mechanical arm is out of control and droops is avoided, meanwhile, quick response of locking of the first ratchet wheel and the second ratchet wheel which are arranged forwards and backwards can lock the joint when the drooping tendency just occurs, and welding quality is improved. The automatic welding device has the advantages that further displacement of the mechanical arm is prevented, hard contact between a welding gun and a workpiece is avoided, workpiece scrapping and equipment maintenance cost is reduced, and therefore the safety of the automatic welding device during working is greatly improved while welding stability is guaranteed.