369 results about "Wind flow" patented technology

The invention discloses a fan blade diagnosis method and system based on voiceprint perception, and relates to the technical field of intelligent monitoring of wind power equipment, and the method comprises the steps: carrying out frequency domain compensation processing, stripping environment wind noise components, and generating a pure voiceprint signal based on a wind flow characteristic parameter set; based on the pure voiceprint signal, identifying a sensitive acoustic frequency band of the fan blade, exciting a sound wave phase synergistic effect in the sensitive acoustic frequency band, and generating an enhanced voiceprint signal; quantifying the internal damage depth of the fan blade material according to the enhanced voiceprint signal, and calculating a sound energy flow disorder degree index; according to the sound energy flow disorder degree index, the blade health state of the fan is judged through a multi-dimensional acoustic characteristic state space mapping mechanism, and a three-dimensional health assessment report is generated; through a physical level wind noise stripping technology, a transfer function matrix is generated based on vortex interference modeling and sound wave-airflow phase offset correction, frequency domain energy reweighted decoupling is realized, and environmental wind noise is accurately stripped in a strong turbulence environment.

The invention relates to the technical field of coal mine underground dust prevention and control, in particular to a coal mine dust concentration over-limit spraying and dust-settling device and a control system thereof.The coal mine dust concentration over-limit spraying and dust-settling device comprises a dust sensing array composed of a plurality of dust concentration sensors arranged in a spatially separated mode, a main sensor arranged close to a dust generation source, and a dust concentration sensor arranged close to the dust generation source, the at least two auxiliary sensors are sequentially arranged at a set interval; the wind speed sensing unit is mounted in a preset range of the upwind direction of the main sensor and is used for synchronously capturing real-time wind speed; the partition spraying actuator comprises independent spraying units corresponding to the positions of the sensors, and each unit is provided with a quick-response electromagnetic valve and an atomizing nozzle; the multi-source information fusion controller is connected with the dust sensing array, the wind speed sensing unit and the partition spraying actuator through an industrial field bus; through dynamic threshold setting, dust diffusion path monitoring and prediction interception technologies, the problems of response lag and excessive spraying of a traditional fixed threshold system are solved.

The utility model discloses an air-to-air heat exchanger and an energy storage converter, a shell of the air-to-air heat exchanger defines an air inlet area, a heat exchange area and an air outlet area which are sequentially arranged in the vertical direction, an air port for internal circulation ventilation corresponds to the heat exchanger area, and an air port for external circulation ventilation corresponds to the air inlet area and the air outlet area. The heat exchange core body is correspondingly arranged in the heat exchange area, so that the outer circulation air channel in the heat exchange core body is arranged in a straight-through mode in the vertical direction, and the situation that dust in outer circulation low protection air flow is accumulated at the corner of the outer circulation air channel of the heat exchange core body after being used for a long time, and consequently the efficiency of the heat exchanger is reduced is avoided. The energy storage converter comprises the air-air heat exchanger. The heat exchange efficiency is high, and the dust accumulation risk of the heat exchanger is reduced.

This invention relates to the field of mining technology and discloses a method for multi-parameter environmental monitoring underground. The method includes the following steps: real-time acquisition of equipment pose, vibration spectrum, and environmental parameters through multi-source sensors; spatiotemporal alignment, filtering and noise reduction, and feature extraction of the raw data; outputting a standardized state vector; fusing pose data, vibration signals, and environmental parameters under a unified spatiotemporal reference to construct a multi-dimensional feature matrix; and using principal component analysis to reduce dimensionality and remove redundant information, outputting the fused equipment state vector. This invention achieves real-time fusion of equipment pose and airflow dynamics, collaboratively controlling ventilation equipment. Based on coupled modeling of vibration spectrum and pose drift, it intelligently compensates for sensor reading errors, eliminates the interference of mechanical vibration on gas monitoring accuracy, and ensures the reliability of gas concentration detection. Through spatial correlation analysis and dynamic airflow optimization, it proactively eliminates sudden drops in wind speed caused by mine car passage, achieving continuous monitoring throughout the roadway.

The invention relates to the technical field of new energy resource evaluation, in particular to a wind and light resource dynamic evaluation method and system based on multi-source remote sensing data, and the method comprises the following steps: inputting a region remote sensing image, calculating a boundary confidence coefficient, generating an interference classification identifier, reconstructing a resource prediction output value, predicting a trend analysis result, and evaluating a development suitability level. And generating a regional resource evaluation result. According to the invention, effective quantification of boundary stability and data confidence is realized through cooperative judgment of a remote sensing image boundary structure and reflected light intensity distribution, fine identification of wind flow offset and area shielding is carried out based on a terrain gradient and a wind direction included angle, and wind speed radiation data is accurately interpolated according to a space grid connection combination and a neighborhood change trend. And meanwhile, climate factors and resource change trends are accurately coupled, and actual path connectivity is determined in combination with terrain and land attributes, so that the spatial suitability and development accuracy of wind and light resources are effectively improved.

The invention provides an intelligent blower temperature and wind speed adaptive control method and system, and relates to the field of intelligent control, and the method comprises the steps: collecting temperature, humidity and wind speed, and constructing a local feature map based on feature vectors; a dynamic evaporation thermodynamic model is established according to the local feature map and used for calculating the evaporation rate of each area, and then the energy requirement for achieving the needed drying effect of each area is calculated according to the evaporation rate; a competitive sensing type wind energy mapping model is established to map energy requirements into control signals used for controlling air outlet parameters, namely wind cavity control signals, and regional self-adaptive adjustment of wind temperature and wind speed in space is achieved; actual air flow output collected in real time is compared with an air cavity control signal, and a feedback difference mechanism is constructed to conduct iterative correction on the dynamic evaporation thermodynamic model and the energy requirement; the physical state change in the hair drying process can be perceived in real time, and dynamic balance can be realized by integrating the use habit and comfort perception of the user.

This application relates to the technical field of fully automated water surface robots, and provides a performance unmanned boat, including a hull; a mounting frame fixed to the hull; a screen fixed to the mounting frame and located on the top side of the hull, the screen having a ventilation structure; and a float fixed to the hull and located on the side of the hull. The performance unmanned boat provided by this application uses a screen with a ventilation structure and a float in conjunction with the hull. The ventilation structure reduces the screen's resistance to natural wind flow, reducing the external force exerted on the screen by natural wind. Simultaneously, the float increases the hull's support points on the water surface, enhancing the hull's resistance to wind and waves. This effectively solves the technical problem of unmanned boats carrying large screens easily capsizing when navigating on water, improving the stability of the performance unmanned boat on water, ensuring the smooth completion of performance tasks, and enabling the performance unmanned boat to meet the requirements of cultural and publicity purposes.

The invention relates to the technical field of industrial data processing, in particular to an intelligent safety accident early warning method and system based on risk assessment, and the method comprises the steps: obtaining a mining operation event, extracting response situations before and after the operation event, checking the response situations with a reference response template, and judging a disturbance response according to the deviation degree; a ventilation network model is constructed, and when it is detected that a monitoring point is abnormal, management traceability is carried out along a traversal upstream path in combination with an air volume distribution proportion; predicting the propagation trajectory of the abnormal gas along the wind flow path and the time of reaching a downstream node based on the ventilation network model, and obtaining spatial correlation analysis; analyzing the disturbance response and the spatial correlation, calculating a coupling risk increment, and outputting a comprehensive risk value; judging the critical degree grade of the comprehensive risk value time series data; and determining a scheduling level according to the combination of the comprehensive risk value level and the critical degree level, when the critical index indicates to evolve to a dangerous state, improving the scheduling level in advance, and generating a differentiated resource scheduling suggestion in combination with the propagation trajectory.

The invention discloses an intelligent control method and system applied to a marine floating target, and the method comprises the steps: collecting target ship information and marine environment data in real time through a multi-mode sensor array, and carrying out the time-space alignment and fusion processing, and obtaining an environment state vector; based on the ship kinematics principle, wind and flow disturbance force is decomposed into resultant force and moment vectors under a ship body coordinate system; evaluating the danger degree of the current navigation environment through the dynamic risk index, carrying out navigation risk intelligent grading, and triggering a grading control strategy; a self-adaptive controller is designed based on the Lyapunov stability theory, anti-interference dynamic adjustment is carried out on the target ship, and track deviation caused by environmental interference is eliminated; when an obstacle or a high-risk sea condition is detected, intelligent obstacle avoidance and path re-planning are carried out, and an optimized path for avoiding the obstacle or a surge area is generated in real time; and calculating the minimum safety distance based on the ship dynamics model, and implementing a graded braking strategy to perform dynamic safety braking on the target ship.

The invention discloses a wind turbine group wake flow control method based on radar wind measurement, and the method comprises the following steps: S1, radar wind measurement: installing laser wind measurement radars on cabins of an upstream wind turbine generator and a downstream wind turbine generator, and enabling the laser wind measurement radars to collect wind direction data in real time; and S2, multi-machine radar data fusion and whole wind flow field reconstruction are carried out, radar wind measurement data of upstream and downstream wind turbine generators are synchronously collected, a three-dimensional wind flow field of a wind direction area of the wind power plant is reconstructed, and the three-dimensional wind flow field outputs whole-field unified wind field indexes as wake flow model input data. The method has the advantage of being good in control effect, and solves the problems that when wake flow of an existing wind turbine group is controlled, self-adaptive adjustment is inconvenient to carry out on upstream and downstream wind turbine units according to radar wind measurement data, so that upstream and downstream fans are lack of cooperation, the wake flow control efficiency is affected, and the power generation benefits of the upstream and downstream fan groups are reduced.

The cold region tunnel anti-freezing system comprises a tunnel body, the two ends of the tunnel body extend outwards to be provided with arched open cut tunnels, the open cut tunnels are erected on the ground, and the open cut tunnels and the ground define a part to form a channel; the at least two groups of exhaust systems are arranged on the open cut tunnel along the trend of the channel at intervals, and the exhaust systems are communicated with the outside of the open cut tunnel and the channel; the monitoring system comprises an out-hole detection module arranged outside the channel and an in-hole detection module arranged at the entrance of the tunnel body; and the main controller is arranged in the tunnel body and is in signal connection with the outside-tunnel detection module, the inside-tunnel detection module and the exhaust system. The open cut tunnel outside the tunnel and the exhaust system are combined together, the exhaust system is installed on the open cut tunnel, when cold air intrudes into the tunnel, the cold air can be exhausted through the exhaust system on the open cut tunnel, the cold air is effectively intercepted, and the risk of freezing injury of the tunnel in the cold region can be remarkably reduced.

The embodiment of the invention relates to the technical field of wind field simulation, and discloses a tree canopy wind field assessment method based on wind environment simulation, comprising: acquiring a three-dimensional data model of a to-be-assessed target environment; hydrodynamic simulation is executed to simulate wind field distribution when wind flows through the three-dimensional data model, and the tree model of the at least one tree is configured to be a porous medium model in the wind field simulation; obtaining a result based on wind field analog simulation; and determining a risk assessment result for the corresponding tree according to the wind load response index. According to the wind field evaluation method in the embodiment of the invention, at least one wind load response index, such as wind speed, pressure, wind load and the like, related to the corresponding tree is calculated according to a wind field simulation result. The quantified indexes can visually reflect the wind action condition of the tree in the wind field, the mechanical response of the tree in different wind environments can be deeply known, and a specific numerical basis is provided for evaluating the wind resistance of the tree.

The invention discloses an intelligent cooperative control system for mine breathing effect wind pressure adjustment and mining-following wind resistance. Comprising a mine multi-parameter intelligent feedback wind pressure regulation and control method, a roadway top cavity multi-channel wind flow regulation and control mechanism and a mining-following sliding closed wind shielding device. According to dynamic sensing of multi-source environmental parameters, including coal face air flow pressure, overlying goaf static pressure and overflow CO concentration, a breathing effect intensity index HBI is calculated, and based on the HBI and a pressure difference direction, linear mapping is conducted on the target opening degree of an openable and closable tuyere assembly, and a dynamic regulation and control instruction is generated; a regulation and control instruction acts on the roadway top cavity multi-channel airflow regulation and control mechanism, the mechanism integrates a direct flow channel, a Z-shaped airflow channel and a pressurization channel, and intelligent regulation of airflow distribution and ventilation pressure intensity is achieved. The mining-following sliding airtight wind shielding device comprises a sliding guide rail assembly, a reel type folding airtight structure and a double-layer flexible branch bin air bag airtight assembly and synchronously slides along with advancing of the working face, and dynamic airtight and isolation compensation of the goaf is achieved.

This invention discloses an intelligent airflow control device and method for combined axial and radial airflow control at a tunneling face. The device includes an axial diameter opening and closing mechanism, an axial horizontal deflection mechanism, a radial air distribution adjustment mechanism, a telescopic and fixed air duct mechanism, and a load-bearing support mechanism. The method includes the following steps: 1. Installing the intelligent airflow control device for combined axial and radial airflow control at the tunneling face; 2. Fully unfolding and hanging the telescopic air duct; 3. Optimizing the flow field distribution through axial and radial airflow distribution; 4. Unloading the telescopic air duct. This invention can adjust the airflow ratio of the axial and radial outlets for different distances from the face and roadway conditions. Based on the tunneling face conditions, it coordinately adjusts the axial airflow angle, the size of the axial outlet, and the size of the radial outlet in real time. Through combined axial and radial adjustment, the airflow at the tunneling face has both axial pushing force and radial diffusion force, thereby optimizing the flow field distribution, improving dust control, and eliminating dust accumulation dead zones.

The application provides a wind guide device and a ventilation system, comprising a base, a lifting rod, an angle adjusting mechanism and a wind guide plate. The base fixes the wind guide device in the air supply channel, the lifting rod is fixedly connected with the base, the angle adjusting mechanism is fixedly connected with the lifting rod, and the wind guide plate is rotationally connected with the angle adjusting mechanism. The lifting rod can adjust the height of the wind guide plate, and the angle adjusting mechanism can adjust the orientation of the wind guide plate. By adjusting the height and orientation of the wind guide plate, the wind guide plate can guide part of the air flow in the air supply channel to the working point located in the pillar construction area, and the part of the air flow will directly impact the dirty air accumulated at the working point, so as to strongly wash and dilute the dirty air. The diluted dirty air will be dispersed away from the working point under the double actions of air flow dispersion and natural diffusion, and finally flow into the air supply channel and be discharged, so that the ventilation effect at the working point is improved, the dirty air accumulation problem is solved, the occupational health and personal safety of the workers are ensured, and the safety hidden danger is eliminated.

Conventional saponius-type wind turbines are large because the generator is connected to the lower part of the turbine's rotating shaft; the goal is to make them more compact. Furthermore, it prevents rainwater, snow, or fallen leaves from accumulating in various parts of the wind turbine. A small, lightweight wind turbine and wind power generation device that can generate stable torque and electromotive force even when wind direction and speed change rapidly, and can utilize wind from all directions, including horizontal, vertical, and oblique directions, to generate rotational torque. [Solution] A vertical-axis wind turbine comprising a bucket having a roughly hemispherical paddle section at the top and a semi-cylindrical bucket section at the body, arranged horizontally offset along the plane of a cylinder cut in half vertically, such that wind flowing into the concave side of one bucket flows into the concave side of the other bucket, and a wind power generation device equipped with a generator inside the bucket.

A large-scale, modular, wind power generating structure and system involving a toroidal or ovoidal shaped wind amplification structure / module that can be stacked vertically to form a tower that passively accelerates a wind flow that moves around each of the modules due to the Bernoulli Principle. Each amplification level includes a plurality of vertical axis wind turbine and generator assemblies, fairings, and vanes that form a synergistic system wherein the efficiency of the vertical axis turbine and generator assemblies and the amount of energy that can be produced per module are substantially improved compared to the turbine assemblies operating outside the integrated and amplified wind system.

The application discloses a long-distance tunneling roadway dirty air intelligent recovery system and method, and belongs to the technical field of mine ventilation. The long-distance tunneling roadway dirty air intelligent recovery system comprises a positive pressure air supply system and a negative pressure dirty air recovery system. The positive pressure air supply system is used for supplying fresh air flow to a working face. The negative pressure dirty air recovery system is used for monitoring the air quality in a roadway and discharging the contaminated air in the roadway. The application solves the problem that the prior art cannot perform good local ventilation in roadway single heading or stope application. The application realizes intelligent recovery of toxic and harmful gases such as dirty air in an ultra-long-distance single heading transportation roadway and tail gas of trackless equipment through reasonable arrangement of a wind cylinder and a local fan and effective cooperation with a gas monitoring sensor, thereby creating a good ventilation working environment underground and reducing the occurrence of occupational diseases of underground workers.

The utility model discloses a kind of cooling mechanisms for wiring harness heat shrink tube baking machine, including upper blowing assembly, lower blowing assembly, air cooler and heat dissipation exhaust component;The upper blowing assembly and the lower blowing assembly are respectively connected by corresponding pipeline The cold air end output port of air cooler, while the upper blowing assembly and the lower blowing assembly are distributed upside down, and both oppositely arranged, by the upper blowing assembly and the lower blowing assembly to heat shrink after wiring harness blowing cooling;And the suction port of the heat dissipation exhaust component is directly opposite the upper blowing assembly, by the heat dissipation exhaust component to the wind flow of the upper blowing assembly blowing towards wiring harness is quickly extracted.The utility model realizes the full range blowing cooling of heat shrink after wiring harness, by cooperating with scroll tube cooler, greatly improves cooling efficiency, effectively shortens the cooling time of wiring harness, to improve overall production efficiency.

This invention discloses a wind-resistant flexible wing plate and a horizontal cable-stayed bridge, comprising a wing plate body for cantilevered installation on the side of an external horizontal cable-stayed bridge to guide airflow. The wing plate body includes a connecting section for connecting to the external horizontal cable-stayed bridge, and the connecting section extends outward along the transverse direction of the bridge, forming a cantilevered section for guiding airflow. By setting the connecting section, the wing plate body can be cantilevered to the external horizontal cable-stayed bridge. Specifically, the connecting section located on the inner side is fixedly connected to the external horizontal cable-stayed bridge, and the cantilevered section extends towards the side opposite to the external horizontal cable-stayed bridge and cantilevers outward, so that the transverse airflow must pass through the cantilevered section before blowing towards the external horizontal cable-stayed bridge. This changes the aerodynamic shape of the bridge, alters the flow pattern around the bridge, and affects the vortex structure on the upper and lower surfaces of the bridge, thereby improving the aerodynamic stability of the bridge.

The utility model discloses a high-speed wind gathering booster fan which comprises a shell, an air duct is arranged in the shell, a motor base is arranged at the position of the axis of the air duct, the upper portion of the circumferential wall face of the motor base extends outwards in the radial direction to form a wind guiding blade, and the wind guiding blade comprises a parallel portion and a torsion wind cutting portion. The parallel part is arranged close to one side of the air outlet, the parallel part is parallel to the axis of the air outlet, the torsion air cutting part is arranged close to one side of the air inlet and deviates from the plane where the parallel part is located, and the extending face of the torsion air cutting part intersects with the axial direction of the driving fan blade set. According to the utility model, air flow is blown out after being pressurized and accelerated, turbulent flow is removed and noise is reduced under the common matching action of the driving fan blade group, the air guide blades, the pressurizing surface and the air gathering cover, so that the air speed is greatly increased, the air supply distance is greatly increased, and the air supply efficiency is improved. And meanwhile, the mute and noise reduction effects are achieved.

The invention discloses an air suction and exhaust method for high-temperature powder treatment equipment needing ventilation, which is characterized in that an air suction pipe which is parallel to a ventilation pipe and is separated from the ventilation pipe is adopted, and air flow after high-temperature powder treatment passes through a plurality of obliquely arranged baffling chambers to realize powder sedimentation and then enters the air suction pipe to be discharged. According to the invention, synchronous air suction and exhaust treatment matched with ventilation can be better realized in high-temperature powder treatment equipment needing ventilation treatment, so that powder can be well removed from air flow extracted by the high-temperature powder treatment equipment, and the restrictive effect influence of air flow factors on the length of the equipment and the ventilation quantity during design is further reduced.

This invention discloses a wind farm power generation assessment method based on uncertainty and wake model. Specifically, it involves: statistically analyzing long-term reference wind speed data to obtain the input annual average wind speed for Monte Carlo simulation; extrapolating wind speed using the long-term corrected MCP method to obtain the wind speed at the reference height of the meteorological tower; obtaining the wind speed at the hub height of the meteorological tower based on vertical extrapolation; obtaining the wind speed at the hub height of each wind turbine in the wind farm based on horizontal extrapolation using the wind flow model; considering the wake effect to obtain the wake-reduced wind speed; obtaining a probabilistic model of air density versus power curves; calculating the average energy per unit area (AEP) of each wind turbine in the wind farm; and after 1000 iterations, obtaining the uncertainty of the AEP of each wind turbine in the wind farm, ultimately obtaining the uncertainty of the wind farm's power generation. This invention can obtain the AEP and uncertainty of the entire wind farm and each wind turbine, providing guidance and reference for the evaluation standards of operating wind farms.

The application provides a device for wind flow stabilization and guidance at a corner of a ventilation roadway of a coal mine, and relates to the technical field of ventilation equipment. The device comprises a bent pipe and a flow guide ring arranged in the inner side wall of the bent pipe. The adaptive flow guide structure provided by the application can inhibit vortex and reduce ventilation resistance under high-speed airflow through deformation, and can recover part of energy under low-speed state through flow channel design, so as to enhance the wind flow stability and ventilation efficiency at the corner of the roadway, adapt to different wind conditions, and improve the safety and reliability of the ventilation system.

The invention discloses a vertical wind tunnel device for a disk-type structure wind tunnel experiment. The vertical wind tunnel device comprises a main body frame (1), an acting force detection rack (2), a flow blocking mechanism (3) and a fan (4), the acting force detection rack, the flow blocking mechanism and the fan are all mounted on the basis of the main body frame, the flow blocking mechanism is located below the acting force detection rack, and the fan is located below the flow blocking mechanism; the acting force detection rack is provided with a detection object suspension mechanism, and the detection object suspension mechanism is used for suspending a detection object (6); the fan is used for outputting upward airflow towards an upper detection object; the flow blocking mechanism is used for blocking airflow output by the fan from reaching the acting force detection rack; and the acting force detection rack is used for detecting the stress state of the detected object. The vertical wind tunnel device provided by the invention can simulate a vertically upward small wind flow field environment, so that the force measurement requirement of a light and miniature structure in a wind tunnel experiment can be met.

The utility model belongs to the technical field of roadway dust removal, and relates to an air flow purification device of a fully-mechanized face air return crossheading, which comprises a frame type component, a lifting component, a lower rotating component, an upper rotating component and a spraying component, the frame type component is used for allowing an operation vehicle to pass through, and the lifting components are arranged on the two sides of the frame type component and used for achieving lifting of an upper structure in the frame type component; a spraying component is arranged in the middle of the upper structure of the frame type component and used for treating dust in an area where a vehicle passes through. The rotating lower part is hinged with one side of the lower structure of the frame type part, and the spraying part is arranged at the upper part of the rotating lower part; the rotating upper part is hinged to the side, close to the rotating lower part, of the upper structure in the frame type part, and a dust catching net is arranged between the rotating upper part and the frame type part. Sufficient passing space is provided for vehicles, obstruction of a traditional dust catching net to traffic is avoided, different roadway heights and environment conditions can be flexibly adapted, and the stability of the treatment effect is ensured.

The application relates to the field of ship energy centralized management technology, in particular to a comprehensive ship electric energy management system based on the Internet of Things, which comprises a front-end power generation module, an electric power algorithm module, a control management module, a front-end monitoring module and a man-machine interaction module; the front-end power generation module converts wind energy into electric energy, converts heat energy generated by diesel engine work into electric energy and converts mechanical energy output by the diesel engine into electric energy; the front-end power generation module is connected to a power grid and delivers electric power to the power grid; the electric power algorithm module monitors electric power output of a wind flow power generation unit, a low-temperature waste heat unit and a shaft power generation unit, collects and analyzes stored electric energy of the front-end power generation module; the front-end monitoring module is used for monitoring electric power generation; and the control management module adjusts electric power flowing into the power grid according to fitting and analysis results. The application has the effect of reducing additional energy consumption of the ship and maintaining overall electric energy efficiency of the ship in an optimal range.

A wind flow sensing system for determining turbulence of wind flow at different elevation sets above terrain is provided. The wind flow sensing system includes an input interface configured to receive, for a set of time steps, a set of measurements of radial velocity at a site line point above terrain for each elevation, and a processor configured to estimate a velocity field for each elevation based on data assimilation of the velocity field, estimate an unbiased horizontal velocity at each elevation for each time step, determine a mean of the unbiased horizontal velocity for a time period including the set of time steps, and determine turbulence based on the unbiased horizontal velocity for each time step and the mean of the unbiased horizontal velocity.

The utility model discloses a fuel diversion wind chamber for combustion device and a formed mixing chamber, the fuel diversion wind chamber comprises a diversion cylinder cavity, the diversion cylinder cavity is composed of a cylinder body and a top plate which is located at the top of the cylinder body and is sealed with the top end of the cylinder body, the bottom of the cylinder body of the diversion cylinder cavity is provided with an air inlet cylinder opening, the inner cavity of the cylinder body is a diversion wind cavity, and the diversion wind cavity is communicated with the top end of the cylinder body. A plurality of air grooves are formed in the cylinder wall of the cylinder body in a circumferential distribution manner; in all the air grooves, all the air grooves are downwind grooves, or all the air grooves are headwind grooves, or part of the air grooves are downwind grooves, and the rest of the air grooves are headwind grooves. The air grooves are formed in the cylinder wall of the cylinder body in the circumferential distribution mode, three air groove distribution schemes are provided, air in the cylinder body is combed and guided into needed air flow, the needed air flow is fully mixed with fuel so that follow-up sufficient combustion of the fuel can be facilitated, and the combustion efficiency of the fuel can be improved.

The invention discloses a ventilation system and construction method for a frozen soil roadbed slope in a high and cold snow area, and belongs to the technical field of frozen soil roadbed engineering. The ventilation system comprises longitudinal ventilation pipes, L-shaped ventilation pipes and transverse ventilation pipes arranged between every two adjacent longitudinal ventilation pipes at intervals; a wind direction control device is arranged at the joint of each longitudinal ventilation pipe and the corresponding transverse ventilation pipe, and wind is controlled to flow into the ventilation pipes with the higher temperature through the wind direction control devices. According to the system, through linkage cooperation of the wind direction control device and the active opening and closing device, active intervention and accurate adjustment of the roadbed temperature field are achieved in the ventilation pipe roadbed.