761 results about "Air flow control" patented technology

The invention discloses an air purification system for a clean workshop. The air purification system comprises a self-adaptive control unit, an air quality monitoring module, an air flow control assembly, an environmental parameter adjusting assembly, a self-optimization filtering assembly, a human-computer interaction interface and predictive maintenance system, an energy efficiency optimization module and a remote diagnosis and early warning system. On the basis of intelligent technologies such as machine learning, reinforcement learning and a data fusion algorithm, real-time monitoring, dynamic optimization and energy efficiency management of the air quality of the clean workshop are achieved. Based on real-time data and historical data, an algorithm is used for carrying out self-adaptive optimization on the air purification system, and manual intervention is reduced. And the running state of the system is dynamically adjusted through the energy efficiency optimization module, so that the energy consumption is reduced while the cleanliness is ensured. The system can diagnose equipment faults in advance, reduce downtime and prolong the service life of equipment. And due to a man-machine interaction interface and a remote monitoring function, an operator can know the state of the system at any time and carry out regulation and control.

The invention discloses a laboratory air conditioning system and a control method thereof, and particularly relates to the technical field of air conditioning. Intelligent monitoring and dynamic adjustment of air quality in an experiment area are achieved through coordinated work of the central control module, the zone control module and the zone sensor module, the system evaluates the air pollution severity degree of each area in real time according to air quality sensing data, and through dynamic linkage of the air purification module, the air flow control module and the temperature and humidity adjusting module, the air quality of the experiment area can be monitored and adjusted dynamically. In addition, by predicting future air quality changes and adjusting air quality parameters and optimizing energy consumption in advance according to prediction results, it is ensured that energy consumption is reduced while the air quality meets experimental requirements, and the precision and efficiency of laboratory air quality management are remarkably improved.

An airflow controller (100) in a pneumatic vacuum elevator is disclosed. The airflow controller includes a bottom portion (102) and an upper portion (110). The bottom portion is adapted as a hollow stepped cylindrical structure (104) and includes a plurality of plates (108) disposed on a bottom surface of the hollow stepped cylindrical structure. The upper portion includes a cylindrical protrusion (112) configured substantially at a centre portion of the top portion with a projection on an outer face of the cylindrical protrusion, a metal plate (114) incorporated by the upper portion, and a disc (116) including a hollow circular structure (118) with an upper face (116a) and a bottom face (116b) and includes a plurality of extensions (120) positioned on the upper face at predetermined positions and a solenoid valve (122) accommodated by the hollow circular structure (118) and configured to open based on a timer.

A banknote transport system 10 includes: an air blowing tube 100 that forms an air flow path 101; a moving body 200 that travels inside the air blowing tube while receiving an air flow within the air blowing tube; a transport path 401 (a transport tube 400) having at least a portion arranged along the air blowing tube to be adjacent to the air blowing tube; and a transport body 500 configured to be able to retain a banknote and traveling inside the transport path. The moving body includes a moving body magnet 213, and the transport body includes a transport body magnet 523. The banknote transport system moves the transport body in conjunction with movement of the moving body receiving the air flow due to attraction and / or repulsion based on a magnetic force applied between the moving body magnet and the transport body magnet.

The utility model relates to the technical field of machine-made sand processing, and particularly discloses a machine-made sand multi-stage screening control system which comprises a shell provided with an air inlet, an air outlet, a feeding port and a discharging port, the feeding port is formed in the upper portion of the shell, and the discharging port is formed in the lower portion of the shell. The device is characterized by further comprising a controller, a wind speed sensor, an adjusting air door, a fan and a plurality of flow guide plates. The wind speed sensor is used for measuring the airflow speed of the air inlet and installed on the air inlet, and the output end of the wind speed sensor is connected with the input end of the controller. The flow guide plates are used for dispersing airflow in the vertical direction of the air inlet, the multiple flow guide plates are transversely installed in the height direction of the air inlet, the width of gaps formed by the multiple flow guide plates and the air inlet is gradually increased from top to bottom, and the flow guide plates can rotate in the vertical direction through the flow guide plate driving mechanism. The input end of the guide plate driving mechanism is connected with the output end of the controller; the adjusting air door is used for opening and closing the air outlet and installed on the air outlet, and the input end of the adjusting air door is connected with the output end of the controller. The fan is used for forming airflow flowing from the air inlet to the air outlet in the shell, and the input end of the fan is connected with the output end of the controller; the controller is used for controlling opening and closing of the guide plate driving mechanism according to the airflow speed, controlling opening and closing of the fan and controlling opening and closing of the adjusting air door. According to the scheme, the problem that the multi-stage distinguishing effect of sand is poor due to the fact that airflow control is not accurate enough during multi-stage screening of existing machine-made sand can be solved.

The invention discloses a device and method for improving the laser welding quality of a large cylindrical battery tab, belongs to the technical field of new energy automobile battery welding, and aims to solve the problems of low material absorption rate, poor welding protection effect and the like in the prior art. The device comprises a fastening pressing block, the fastening pressing block fixes a battery cell and a collector plate, the fastening pressing block is provided with an internal gas passage, a blowing nozzle of the fastening pressing block is sequentially connected with a plasma activator, a gas heating device, a gas flow controller and a protective gas cylinder, and an exhaust nozzle of the fastening pressing block is connected with an exhaust device. Nitrogen blown out through the blowing nozzle sweeps over the surface of a to-be-welded area of the collector plate, a protective air curtain is formed in the to-be-welded area, the plasma activator conducts ionization activation on the nitrogen, formed nitrogen free radicals and the to-be-welded surface form a nitride layer in a chemical mode, and the laser absorption rate of the material can be remarkably improved. The reaction between the preheated workpiece surface and nitrogen free radicals can be accelerated, and a dual synergistic mechanism of physical preheating and chemical activation is formed.

The invention belongs to the technical field of gas detection, particularly relates to a harmful gas concentration detection device for environmental monitoring, and solves the problems of insufficient airflow control and insufficient detection precision in the prior art. The spiral air flow guide plate, the servo motor and other structures are arranged, the air flow guide plate is designed to be of a right-handed spiral structure, gas enters the barrel in a laminar flow state through a gradually-shrunk channel of the air flow guide plate, turbulence interference is effectively reduced, and the air flow guide effect is improved. The rotating circular plate drives the sliding straight block to move in the radial direction through the inner spiral limiting block, the organ moving block is driven to form a dynamic sealing cavity, sucked airflow is compressed to a detection area, the collision frequency of target gas molecules and the detection assembly is remarkably improved, and therefore the capturing capacity of the device for trace gas is enhanced.

The invention relates to the field of gallium nitride production, in particular to an airflow control valve and a horizontal gallium nitride production system. In the airflow control valve, a first temporary storage mechanism is used for temporarily storing gas in an upstream pipeline of a valve body. The second temporary storage mechanism is used for temporarily storing gas in a downstream pipeline of the valve body. The communicating mechanism is connected between the first temporary storage mechanism and the second temporary storage mechanism and used for selectively communicating the first temporary storage mechanism with the second temporary storage mechanism. The vibration detection mechanism is used for detecting the vibration condition of the communication mechanism when the first temporary storage mechanism communicates with the second temporary storage mechanism through the communication mechanism. According to the invention, independent detection and monitoring can be carried out on cavitation and vibration of valves in each gas path, so that personalized management is carried out for different gas paths and different valves, personalized management of gas path links is realized in a huge production equipment system, the safety of equipment operation is effectively guaranteed, and the production efficiency is improved. And the service life of the whole gas circuit can be prolonged.

The invention discloses a production line spraying processing system based on Internet of Things, which comprises a state identification module, a dynamic airflow compensation analysis module and a spraying cabin airflow control module, and is characterized in that the state identification module is used for monitoring and judging whether a spraying cabin is in an ideal working state in real time; the dynamic airflow compensation analysis module is used for calculating the airflow requirement of a dead angle area in real time according to a three-dimensional model of a sprayed part, and the spraying cabin airflow control module is used for dynamically adjusting parameters of a vortex generator according to a monitoring analysis result so as to optimize airflow distribution and a paint mist adhesion effect. The state recognition module, the dynamic airflow compensation analysis module and the spraying cabin airflow control module are electrically connected with one another, intelligent management of the spraying process is achieved, the paint mist deposition efficiency and the coating uniformity are remarkably improved, and the over-spraying and dissipation phenomena are reduced.

The invention discloses an air-fuel ratio control method for a high-pressure direct injection engine in a diesel-natural gas dual-fuel cylinder, and relates to the technical field of engine control, and the air-fuel ratio control method comprises the following steps: collecting diesel mass flow, natural gas volume flow and natural gas component data, and determining a diesel-natural gas mixing ratio; a basic target air-fuel ratio is obtained by combining the real-time rotating speed of an engine, the load and the diesel oil-natural gas mixing proportion; based on the pressure and temperature of the intake manifold and the rotating speed of the engine, the target air-fuel ratio after model correction is obtained; the working condition load change rate is detected, the pre-optimized air-fuel ratio trajectory MAP is called, and a transient correction target value is generated; calculating the deviation between the transient correction target value and the measured value of the air-fuel ratio sensor and the deviation change rate, and outputting an air-fuel ratio correction value; and the final target air-fuel ratio is calculated and sent to an air flow control valve to execute air inlet adjustment. The method is suitable for engine application scenes requiring high-precision and self-adaptive control to improve combustion efficiency and reduce emission.

The invention discloses a three-dimensional self-driven underwater air flow control system, and relates to the technical field of underwater air flow control, and the underwater air flow control system provided by the invention can realize transmission and control of trace gas at a microscopic level, so that new functions and applications which cannot be realized by some traditional liquid microfluids can be realized. Aiming at the defects of a two-dimensional airflow control system, the invention provides a new strategy for constructing a three-dimensional self-driven underwater airflow control system by using Laplace pressure difference in bubbles in combination with a Chinese traditional weaving technology and a super-hydrophobic metal wire. The two ends of the super-hydrophobic metal wires are curled into disc shapes with different sizes by utilizing a Chinese traditional weaving technology, and when the formed framework is immersed into water, the disc structures and the connecting metal wires are wrapped by a layer of retained air, so that a communicated airflow control system is formed.

The utility model relates to a double-chamber furnace burner gas energy-saving device which comprises a gas inlet pipeline, the gas inlet pipeline is provided with an air flow sensor and an air flow control valve, and a gas pipe is provided with a gas flow sensor and a gas flow control valve. The output end of the air flow sensor and the output end of the gas flow sensor are electrically connected with the input end of the controller, and the output end of the controller is connected with the air flow control valve and the gas flow control valve. The controller is provided with a master controller, the master controller is provided with a double-cross control module, and the master controller controls the air flow control valve and the gas flow control valve through the double-cross control module and the controller. The controller and the master controller are arranged, the controller transmits detection parameters of the air flow sensor and the gas flow sensor to the master controller, the master controller achieves double-cross control through the double-cross control module, and the controller adjusts the valve opening degree of the air flow control valve and the valve opening degree of the gas flow control valve through the double-cross control. And thus, energy-saving control is realized.

The invention discloses a D-zone airflow control structure of a glass annealing kiln in the technical field of annealing kilns. The D-zone airflow control structure comprises a C zone, a D zone and an R zone which are sequentially arranged in the conveying direction of a glass tape, an upstream end fixed baffle is arranged between the C area and the D area, and a downstream end fixed baffle is arranged between the D area and the R area; a draught fan, an air inlet pipe and a heat absorption air pipe are installed above the R area, one end of the air inlet pipe is communicated with an air outlet of the draught fan, the other end of the air inlet pipe is communicated with the downstream end of the R area, one end of the heat absorption air pipe is communicated with an air inlet of the draught fan, and the other end of the heat absorption air pipe is communicated with the upstream end of the R area. A backflow air pipe is installed above the area D, one end of the backflow air pipe is communicated with the area D, and the other end of the backflow air pipe is communicated with an air inlet of the fan. According to the invention, a secondary backflow mode is adopted, airflow leaked from the R area to the D area flows back to the R area through the backflow air pipe, the airflow in the R area is prevented from flowing to the C area, and the temperature control influence of the airflow in the R area on the C area is reduced.

An air conveyance system and method for distributing and accumulating containers and moving containers along a distribution line generally has a horizontal planar surface perforated with a plurality of angular air holes, a blower fan, an airtight body, and an airflow controller. The blower moves air through the plurality of angular holes to create a cushion of air atop the horizontal planar surface powerful enough to float containers. The cushion of air is directional and can move, hold, and direct containers across the plane at various speeds.

Some methods for controlling a set of controllable actuators may involve obtaining actuator data for the set of controllable actuators and receiving object-based sensory data including a set of sensory objects. Some methods may involve rendering the object-based sensory data to produce actuator control signals, wherein the rendering is based at least in part on the actuator data. Some methods may involve obtaining playback environment data. The rendering may be based, at least in part, on the playback environment data. Some methods may involve providing, by the control system, the actuator control signals to one or more controllable actuators of the set of controllable actuators. The set of controllable actuators may include one or more light fixtures, one or more haptic devices, one or more air flow control devices, or combinations thereof.

The invention discloses a cooling device and glass fiber production equipment, and relates to the technical field of glass fiber production, and the cooling device comprises a spray pipe, an air supply pipeline, a control valve and a control system. Wherein the spray pipe is provided with a plurality of air nozzles distributed at intervals along the longitudinal direction, the plurality of air nozzles are used for spraying air flow towards one side deviating from the bushing so as to form an air vortex capable of reducing the temperature of the bushing and the root of the glass fiber on one side deviating from the bushing of the spray pipe, and the air supply pipeline is connected with the spray pipe and is used for supplying the air flow to the spray pipe; the control valve is arranged on the air supply pipeline and used for controlling the flow of airflow in the air supply pipeline, and the control system is in communication connection with the control valve and used for controlling the opening degree of the control valve according to the wire drawing operation state. The cooling device can stabilize the temperature of the bushing plate when the wire drawing operation is interrupted or the machine head is switched, reduces the number of waste products, and meets the cooling requirement of the bushing plate with high hole number for producing small-diameter fibers, so that the productivity and the economic benefit of a wire drawing operation unit are improved.

The invention relates to an expiration detection and health diagnosis system and method based on a gas sensor, and the system comprises an air pump which is used for collecting a gas sample of a target user, adjusting the gas flow rate and flow direction of the gas sample, enabling the gas sample to meet a preset gas transmission requirement, and directionally transmitting the gas sample through the gas flow rate and flow direction; the gas sensor is used for detecting whether target gas exists in the gas sample and generating a corresponding analog signal under the condition that the target gas exists in the gas sample; and the data processing module is used for converting the analog signal into a digital signal, performing data processing and environment compensation on the digital signal to obtain an expiration detection result, generating health diagnosis information according to the expiration detection result, and displaying the expiration detection result and the health diagnosis information in terminal equipment in real time. Therefore, the problems that in the prior art, portability is poor, airflow control is inaccurate, sensitivity is low, data processing lags behind, and the environmental interference influence is large are solved.

The invention discloses an electronic industry clean workshop air circulation function self-adaptive adjusting system and method. The adjusting system comprises a three-dimensional grid monitoring module, a data processing module, a visualization module, a computer vision module, an intelligent decision module and an air circulation control module. The adjusting method comprises the steps of three-dimensional grid sensing arrangement and monitoring, data processing, data visualization, image feature extraction, abnormal area early warning, air circulation parameter decision making, self-adaptive adjusting execution and closed-loop feedback optimization. A continuous space distribution model is constructed through real-time monitoring data of a three-dimensional grid sensor and is converted into a dynamic visual three-dimensional heat map, correlation between environment characteristics and air circulation control quantity is further established, and air flow control parameters are output based on local pollution abnormal conditions. The adjusting accuracy of the system on complex working conditions can be remarkably improved, and self-adaptive adjustment and sustainable evolution of the air circulation function are achieved.

The invention relates to the technical field of agricultural machinery production, in particular to a welding device for agricultural machinery and a method thereof.The welding device comprises a welding platform, two Y-direction clamping assemblies and two X-direction clamping assemblies, the Y-direction clamping assemblies and the X-direction clamping assemblies are arranged above the welding platform, and each of the Y-direction clamping assemblies and the X-direction clamping assemblies comprises two clamping supporting plates; a driving assembly is arranged at the bottom of the clamping supporting plate, two sets of clamping plates are arranged on the upper surface of the clamping supporting plate, an electric push rod is arranged on one side of the clamping plate on one side, a limiting plate is arranged on one side of the clamping plate on the other side, the two sets of clamping plates are used for clamping a metal frame strip, and the limiting plate is used for adjusting the positions of the clamping plates. The electric push rod is used for controlling the clamping plate to be close to the other group of clamping plates to finish clamping; welding guns capable of moving in the X direction and the Y direction are arranged on the welding platform, an airflow control box is arranged between the welding guns, and a synchronous frame is arranged at the bottoms of the welding guns and can extrude gas in the airflow control box along with movement of the welding guns.

The invention relates to the field of physiotherapy, in particular to a condition control type moxibustion support and a control method. According to the device, the output end of a valve system is connected to a pneumatic push rod, a first air inlet pipe and a second air inlet pipe, and a thermometer inserted into a shielding cylinder and located below a grid is arranged on a thermometer mounting position; according to the condition control type moxibustion support and the control method, the main height and the combustion state of a moxa stick and the secondary medicine mist guiding-out strength are controlled, and the sealing effect of the shielding cylinder provides a basis for airflow control of the first air inlet pipe and the second air inlet pipe; after a height signal of a moxa stick is obtained through a shielding sensor, adjustment is achieved through a pneumatic push rod, the height of the moxa stick is appropriate, and it is guaranteed that the infrared effect and the heat effect of a moxa stick burning point are correctly applied to the skin position; after the height is correctly set, the combustion state of a moxa stick combustion point can be adjusted according to the thermometer and through work adjustment of the second air inlet pipe.

The invention discloses an embedded ceramic wear-resistant structure petal leather cup, and particularly relates to a pipe cleaner, the embedded ceramic wear-resistant structure petal leather cup comprises a pipe body framework, a top cover is fixedly installed in a top port of the pipe body framework, the pipe body framework is sleeved with a plurality of petal leather cup bodies, and a plurality of composite beads which are close to a cup opening and are distributed in a circumferential array mode are movably arranged on the outer side faces of the petal leather cup bodies; the outer side wall of the petal leather cup body is provided with flow channel grooves penetrating to the section of a cup opening, and each flow channel groove is located between the two composite beads and distributed in the middle. The flow channel grooves are distributed in an inclined mode and fixedly communicated with a flow channel formed in the petal leather cup body and an air hole formed in the pipe body framework. Through the combined design of the runner grooves and the composite beads, the wear resistance and the cleaning efficiency are improved, self-rotation and intelligent airflow control are achieved through airflow guiding and dynamic adjustment, and the self-rotation intelligent airflow cleaning device is suitable for complex pipeline cleaning scenes.

The invention discloses a hollow-core optical fiber microstructure size dynamic nondestructive measurement and control system, which is characterized in that a spectral confocal detection module acquires spectral signals reflected by each interface of the cross section of a hollow-core optical fiber from the side surface of the hollow-core optical fiber by using a dispersion confocal principle in a hollow-core optical fiber drawing process, and converts the spectral signals into spectral data; the data analysis module outputs an axial peak value calculated value by using a neural network model according to the spectral data, and converts the axial peak value calculated value into the diameter of a nested glass tube in the nested structure unit; the regulation and control module outputs an airflow regulation instruction according to the difference between the diameter of the nested glass tube and a preset value; the airflow control module adjusts the size of airflow entering the hollow-core optical fiber according to the airflow adjusting instruction, and then the diameter of the nested glass tube is adjusted. According to the invention, the diameter of the nested structure unit in the hollow-core optical fiber can be accurately measured in the production process, and the technological parameters can be adjusted in time according to the product state.

The invention relates to a control method and equipment for an air system in the cold start process of a fuel cell, and relates to the field of fuel cells. In the cold start process of the fuel cell, the opening degree of the back pressure valve is set to be a fixed value, closed-loop control over the rotating speed of the air compressor and open-loop control over the opening degree of the bypass valve are conducted, and therefore the air flow control accuracy and stability of the fuel cell system are greatly improved. Besides, the starting temperature which is calculated only in the power-on initialization state and is not updated any more in the subsequent starting and running process is set, the target air pressure is corrected and calculated through the starting temperature to obtain a target air pressure correction value, and then the opening degree of the back pressure valve and the opening degree of the bypass valve are compensated and adjusted according to the correction value. Therefore, the system can reach the required optimal target air pressure during cold start in different low-temperature environments, so that the start adaptability and reliability of the fuel cell in different low-temperature environments are enhanced.

The invention discloses an intelligent enhanced computer cooling system, and aims to solve the problems that a traditional cooling system is low in cooling efficiency, high in energy consumption and insufficient in intelligence when being applied to a high-performance computer and a server. The system comprises a multi-layer heat dissipation mechanism which is composed of a heat conduction layer made of a high-heat-conduction graphene composite material, a liquid cooling layer made of phase change cooling liquid and an air cooling layer provided with an intelligent fan control system, and heat of core components can be efficiently transferred and dissipated; the intelligent temperature control algorithm monitors the temperatures of the CPU, the GPU and the memory by means of a sensor network, and automatically switches three heat dissipation modes of energy saving, high efficiency and limit according to the load and the temperature; the adjustable heat dissipation module adopts a modular design, the fan and the liquid cooling system are detachable, and the mounting position is adjustable, so that a user can upgrade and maintain conveniently; the intelligent air flow control system optimizes the air flow direction and strength in the case according to temperature feedback by using a programmable airflow guider. The heat dissipation efficiency is remarkably improved, the energy consumption is reduced, the system stability and maintainability are improved, the heat dissipation requirement under the high-performance computing environment is effectively met, and good application and popularization value is achieved.

The invention discloses an air filtering system and method, and relates to the technical field of vehicle engineering.The air filtering system comprises an air inlet module, an air inlet flow control module, an air filtering module and a temperature detection module, and the air inlet module comprises a high-temperature air guiding pipe and a normal-temperature air guiding pipe; the normal-temperature air guide pipe is used for sucking normal-temperature air in the external environment; the high-temperature air guide pipe is used for sucking high-temperature air generated in an engine cabin; the air filtering module is used for filtering the mixed air; the filtered mixed air enters the engine; the temperature detection module is used for detecting the mixed air temperature of the mixed air; the air inlet flow control module is used for controlling the air flow proportion between the normal-temperature air and the high-temperature air sucked by the air inlet module according to the mixed air temperature so that the mixed air temperature can be within the standard temperature interval. The filtering effect of the air filtering module can be improved, the service life of the air filtering module can be prolonged, and the maintenance cost of the air filtering module is reduced.

The invention belongs to the technical field of pneumatic conveying, and particularly relates to an accurate and stable feeding method and system for negative-pressure dense-phase pneumatic conveying, the deviation between the average powder conveying flow and the target flow in the sampling time period is monitored, the drift diameter of a stock bin outlet is changed through an adjusting mechanism at the stock bin outlet, and the powder flow at the stock bin outlet is roughly adjusted; meanwhile, the loosening air flow regulation and control device regulates the loosening air flow at the outlet of the stock bin, and precise and stable discharging of the sending bin is achieved; on the other hand, the upper air pressure P1 and the lower air pressure P2 of the stock bin are monitored through a pressure sensor, signals are fed back, air pressure balance of the sending bin is adjusted, and automatic feeding is achieved; in the feeding process, the loosening air provides the target air supply amount of 10%-20%, and the problem that in the traditional technological process, the feeding stability is affected by the air pressure balance arching phenomenon of a sending bin due to the fact that the air amount of the loosening air is too large is solved; the feeding precision and stability of the negative-pressure dense-phase pneumatic conveying system are effectively improved.

To provide an air conditioning system enabling an air humidity in a living room to be closer to a target humidity while making an air temperature in a living room close to a target temperature.SOLUTION: A control part in an air conditioning system includes: a temperature conditioning and air quantity control mode for controlling an air quantity of a carrying fan and an aperture of a damper on the basis of a temperature conditioning operation where an air conditioning device conditions an air temperature in a living room so as to have a target temperature; and a humidity conditioning and air quantity control mode for controlling the air quantity of the carrying fan and the aperture of the damper on the basis of a humidity conditioning operation where the air conditioning device conditions an air humidity in the living room so as to have a target humidity. The control part performs control for switching the temperature conditioning and air quantity control mode and the humidity conditioning and air quantity control mode on the basis of a first control capability value set on the basis of temperature difference between the air temperature in the living room and the target temperature and a second control capability value set on the basis of humidity difference between the air humidity in the living room and the target humidity.SELECTED DRAWING: Figure 3

The invention belongs to the technical field of air inlet channel wind tunnel tests, and particularly relates to a supersonic air inlet channel wind tunnel test model and a related parameter calculation method thereof, a simulation machine body and an air inlet channel installed on the simulation machine body. A center cone is installed at an inlet of the air inlet channel and comprises a cone body at the front end and a straight pipe at the rear section, a hollow channel is formed in the straight pipe, a drainage groove for guiding airflow into the hollow channel is formed in the connecting position of the straight pipe and the cone body, the tail of the airflow channel is connected with a drainage pipeline, and a drainage flow measuring rake and a drainage flow control valve are installed in the drainage pipeline. An air inlet channel outlet total pressure measuring rake and a suction pipeline are installed at an air inlet channel outlet, a suction flow control valve is installed in the suction pipeline, and the flow of the air inlet channel is controlled through the suction flow control valve in the suction pipeline. And the air inlet channel aerodynamic performance such as the total pressure recovery coefficient and the distortion index of the air inlet channel under the matching of different air inlet flow rates and various discharge flow rates is obtained.

Systems and methods are provided for utilizing gas lens interfacing collets. A welding-type system may include an electrode holder configured for use in conjunction with an arc welding based torch, a gas nozzle configured to engage a torch head of the welding-type torch, and a gas flow control component. The electrode holder may be configured to engage a non-consumable electrode. The gas flow control component may include a hole through which the electrode extends. The electrode holder may be secured via holder securing features configured to engage the electrode holder onto one or both of the torch head and a back cap at a back-end of the welding-type torch. The torch head may include a nozzle securing element configured to secure the gas nozzle onto the torch head. The gas flow control component may be secured in place by one or both of the gas nozzle and the electrode holder.

The invention discloses a gas environment regulation and control system and method for a clean laboratory. The gas environment regulation and control system comprises an air treatment unit and a gas monitoring unit, and the air treatment unit and the gas monitoring unit are connected with an intelligent control unit; the control unit is connected with an execution mechanism; the air treatment unit comprises a three-stage filtering module, an activated carbon adsorption module, a variable refrigerant flow air conditioning system and a heat recovery device; the gas monitoring unit comprises a multi-dimensional sensor network, a movable sampling device and a rail type gas suction hood; the intelligent control unit comprises an edge computing node and a cloud management platform; the execution mechanism comprises an airflow control assembly and a temperature and humidity regulation and control assembly. The gas environment regulation and control system of the clean laboratory adopts a composite purification technology and has a real-time monitoring and purifying function.