890 results about "Rotational flow" patented technology

An electric work machine with improved workability at high output, configured to cut a work target, is provided. The electric work machine comprises: a working portion configured to cut the work target and a main body including: a housing; a flow path forming portion; a motor; and a control unit, wherein the motor generates rotational power for driving the working portion, the control unit electrically controls rotation of the motor, the flow path forming portion forms an air flow path including a first air flow path and a second air flow path, the first air flow path communicates with an exterior of the housing to allow external air to flow to the motor via the control unit, and the second air flow path communicates with the exterior of the housing so as to allow external air to flow directly to the motor.

The invention relates to the technical field of transformers, in particular to an anti-interference phase-shifting rectification dry-type high-capacity transformer which comprises a cooling channel, an air inlet system, an air outlet system and a compression system. The cooling channel is arranged between the high-voltage coil and the low-voltage coil; the air inlet system is connected with the mounting frame, and when the air inlet system works, low-temperature gas outside the anti-interference shell is sucked in, forms rotational flow and is fed into the cooling channel; the air outlet system is connected with the top of the anti-interference shell, and the compression system is connected with the air outlet system; low-temperature air is extracted from the outside and fed into the space between the high-voltage coil and the low-voltage coil in a rotational flow mode, dead-corner-free heat dissipation is guaranteed, the heat dissipation efficiency can be improved by changing the included angle between the low-temperature air and the horizontal plane during rotational flow along with heat change, heat is recycled for refrigeration, and the heat dissipation efficiency is further improved; the problem that due to heat accumulation in the anti-interference shell, air blown into the position between the high-voltage coil and the low-voltage coil by the draught fan is hot air and is not evenly distributed is solved.

The invention relates to the field of multiphase numerical simulation, and discloses a numerical simulation method for solid and liquid phases in a rotating flow channel based on multiple reference systems, which comprises the following steps of: firstly, acquiring a rotating flow field generated by a multiple reference system method, and extracting rotating domain information as well as particle information and fluid computational domain grid information in a current time step; secondly, particles in a rotation domain and particles outside the rotation domain are determined according to the rotation domain information and the particle information; in combination with the particle information and the fluid calculation domain grid information, the final flow field speed and the reconstructed porosity of the particles in the rotation domain and the particles outside the rotation domain are calculated respectively, and then the drag force is calculated according to the final flow field speed, the reconstructed porosity and the particle information; meanwhile, according to the particle information and the rotation domain information, the Korotkoff force and the centrifugal force of the particles in the rotation domain are calculated. Finally, drag force, Korotkoff force and centrifugal force are calculated through iteration, particle information and grid information of the next time step are obtained, and therefore numerical simulation calculation of particle motion in the rotating flow channel under the fixed grid is achieved.

The invention belongs to the technical field of wind tunnel simulation, and particularly relates to a multi-physics field coupling environment simulation device, which comprises a base, an upper surface of the base is fixedly connected with a simulation cabin, one side wall of the simulation cabin is provided with a plurality of horizontal flow fans, a plurality of rotating flow fans arranged around the simulation cabin by a circle are mounted on the upper surface of the base, and a top portion of the simulation cabin is provided with a plurality of vertical flow fans. The multi-physics field coupling environment simulation device of the invention is used for simulating complex environments of three-dimensional multi-physics field coupling under different weathers, which improves the diversity of wind tunnel tests.

The comprehensive cleaning equipment for the oil filter comprises a cleaning pool, a plurality of cleaning bins capable of allowing the filter to be placed therein are arranged in the cleaning pool in a matrix mode, and a dynamic cleaning mechanism is arranged in each cleaning bin. The dynamic cleaning mechanism comprises a rotary supporting assembly used for containing the filter and a flushing assembly used for cleaning the filter, in the working state, the rotary supporting assembly is matched with the flushing assembly to drive the filter to rotate, and the flushing assembly is provided with a water spraying channel arranged in the tangential direction of the surface of the filter. High-pressure water flow is guided to act on the surface of the filter in the tangential direction through the water spraying channel, cleaning liquid in the cleaning bin is promoted to form a rotational flow state, the filter rotates on the rotary supporting assembly, comprehensive cleaning is guaranteed, and deep dirt is removed through centrifugal force.

The invention discloses a stainless steel material gear machining system, and relates to the technical field of gear machining. Accurate positioning and feeding of a gear blank are achieved through the rotary positioning pin and the feeding electric cylinder; the cutting wheel rotates at a high speed to complete tooth root cutting, and high-pressure airflow immediately cleans scrap iron on a cutting edge; the closed protective cover is matched with the scrap blocking cover and the scrap guiding pipe to guide scrap iron to the cooling liquid pool in a centralized mode. And internal air pressure is released to drive the air wheel and the rotary impeller disc, so that the cooling liquid forms rotary flow, scrap iron is concentrated and deposited, secondary pollution or pipeline blockage of the scrap iron is prevented, and the gear machining efficiency and quality are greatly improved.

The utility model relates to the technical field of water treatment, in particular to a multi-phase component multi-stage reinforced mixing device which comprises an outer cylinder, an inner cylinder, a flow guide assembly, a turbulent flow assembly, a mixing and stirring assembly and the like, a first mixing area is formed in the outer cylinder, and feeding is performed in the circumferential tangential direction; a second mixing area provided with a mixing and stirring assembly is formed in the inner cylinder body; the flow guide assembly is located between the first mixing area and the second mixing area; a third mixing area is formed between the outer barrel and the inner barrel, and the turbulent flow assembly is arranged in the third mixing area. The overall structure is compact and simple; sewage is mixed through the rotational flow effect and the centrifugal effect of the first mixing area, meanwhile, components in the sewage are separated and sorted, heavy impurities are centrifugally separated and discharged, and other impurities enter the second mixing area and the third mixing area to be continuously subjected to mechanical mixing, circulating flow mixing and vortex flow mixing reaction; meanwhile, the particle size of the flocculation core is controlled, so that the mixing efficiency is improved, and the utilization rate of the coagulation agent is improved.

The invention relates to the technical field of air flotation oil removal, and discloses a rotational flow air flotation oil removal device and an oil-water separation process. The rotational flow air flotation oil removal device comprises a tank body; the cyclone assembly is arranged in the tank body and comprises a cylinder body fixedly mounted in the tank body; the gas distribution assembly is coaxially arranged at the bottom of the mixing cavity; the gas distribution assembly comprises a gas distribution disc rotationally arranged at the bottom of the mixing cavity, a gas inlet pipe connected with the center of the bottom of the gas distribution disc in a penetrating mode, a plurality of sets of cylindrical gas holes formed in the radial direction of the gas distribution disc in an array mode, a plurality of sets of spiral cover plates covering the gas distribution disc and conical gas holes formed in the spiral cover plates and corresponding to the cylindrical gas holes. According to the rotational flow air flotation oil removal device, the air distribution disc is driven to rotate intermittently, so that the cylindrical air holes correspond to the conical air holes of the spiral cover plate alternately, tiny bubbles and large bubbles matched with oil drops with different particle sizes are generated, and effective capture of tiny oil drops and rapid separation of medium and large oil drops are achieved.

A gas distributor for improving ionization efficiency of a radio frequency ion thruster, comprising a gas supply pipeline, a cavity, a flow guide ball, radial rotational flow holes, axial diffusion holes and a flow guide ball limiter, the gas supply pipeline and the cavity are integrally formed, the radial rotational flow holes and the axial diffusion holes are dispersedly arranged in the cavity, the flow guide ball is filled into the cavity through the gas supply pipeline, the flow guide ball limiter is arranged in the cavity to prevent relative movement of the flow guide ball in the cavity, and the gas distributor composed of the gas supply pipeline, the cavity, the flow guide ball, the radial rotational flow holes, the axial diffusion holes and the flow guide ball limiter is arranged at the bottom of a discharge chamber of the thruster.

The invention discloses a rotational flow anti-blocking device for a pneumatic coal ash conveying pipeline, and particularly relates to the technical field of pneumatic ash conveying, the rotational flow anti-blocking device comprises a conveying pipeline main body mounted on an inlet and an outlet of a pneumatic powder suction pump, and an anti-blocking device is arranged on the inner wall of the conveying pipeline main body and comprises a square pipe; the anti-blocking device is arranged in the conveying pipeline body, the drying mechanism is used for drying wet fly ash to reduce viscosity and reduce caking, the vibration mechanism is matched with airflow of the drying mechanism to achieve pipeline vibration to clean attached fly ash, and the crushing and filtering mechanism crushes and filters residual caking. The protection mechanism blocks the square pipe when crushing is not needed so as to guarantee stability of the mechanism, the multiple mechanisms act synergistically, the blocking problem in the wet coal ash conveying process is effectively avoided, the conveying efficiency and the system stability are remarkably improved, the equipment shutdown and maintenance cost is reduced, and the service life of the device is prolonged.

The invention discloses an oil reservoir exploitation multiphase flow separation device with cyclone pre-separation, which comprises a cyclone separator body, a cyclone separation assembly, a purification and deposition prevention assembly and a gas export and purification assembly, and is characterized in that the cyclone separation assembly is mounted in the cyclone separator body; according to the device, primary screening and flow equalizing are carried out on high-sand-content multi-phase fluid through a honeycomb damping grid at the front end of a micro rotational flow channel by utilizing a regular pore channel structure of the honeycomb damping grid, large-particle solid impurities are effectively intercepted, and the high-sand-content multi-phase fluid is purified; after the fluid passes through the honeycomb damping grid, the fluid enters the conical opening of the micro rotational flow channel, the flow speed is increased under the acceleration action of the contraction section, a high-strength rotational flow field is generated along a flow guide path formed by the micro spiral grooves, and the fluid is prevented from directly entering the micro rotational flow channel to cause local blockage or abrasion; and primary separation of oil, gas, water and solid impurities is realized under the action of centrifugal force.

The invention relates to a centrifugal compressor PIV speed measurement and analysis method, device and equipment and a medium. The method comprises the following steps: acquiring flow field optical measurement data of the centrifugal compressor through a particle image velocity measurement technology; inputting optical measurement data of the flow field into a deep learning model, and extracting dynamic characteristics of the flow field through a characteristic extraction layer of the deep learning model; reconstructing the dynamic characteristics of the flow field into a three-dimensional flow field velocity vector field by using a velocity vector reconstruction layer in the deep learning model; and generating a velocity measurement analysis result based on the three-dimensional flow field velocity vector field. By adopting the method, the multi-scale dynamic characteristics in the complex three-dimensional rotating flow field of the centrifugal compressor can be effectively captured, high-precision three-dimensional velocity vector reconstruction is realized, and the spatial resolution and robustness of flow field measurement are improved.

The invention discloses a wafer cleaning device based on ultrasonic cleaning, and relates to the technical field of wafer cleaning devices. Comprising a cleaning machine outer tank body, a wafer cleaning glass tank, an ultrasonic cleaning tank, an ultrasonic device, a bottom plate, a housing, a cleaning tank rail, a flow dividing water supply device and a bubble removing uniform vibration device, ultrapure water serves as a medium, ultrasonic vibration is effectively conducted to the wafer cleaning glass tank, a strong acid solution in the tank is driven to uniformly vibrate, and efficient cleaning of wafers is achieved. High turbulence pulsation and local shearing stress are formed at the junction of oblique water replenishing and the stock solution, large bubbles are sheared into small bubbles, bubble gathering is prevented, and the liquid purity and the ultrasonic cleaning efficiency are improved. Under the centrifugal separation action of the rotational flow connecting base and the annular rotational flow piece, bubbles in water flow are concentrated in the center position, ultrapure water on the outer side is rapidly discharged, the bubbles are efficiently absorbed after making contact with the hydrophobic porous membrane, and the bubble removing effect is remarkably improved.

An oil baffle assembly, a rotor assembly and a compressor. The oil baffle assembly comprises: a first-stage oil baffle (1), wherein a flange (11), a first counterweight (12) and a plurality of support columns (13) are provided on the side of the first-stage oil baffle (1) that faces a rotor core (3), the flange (11) is configured to accommodate an end portion of a crankshaft (7), mounting holes (14) are provided in the first counterweight (12) and the support columns (13), and a connecting member (8) connects the first-stage oil baffle (1) to the rotor core (3) by means of the mounting holes (14); and a second-stage oil baffle (2) which is arranged on the side of the first-stage oil baffle (1) that faces away from the rotor core (3). The oil baffle assembly enlarges the coverage space of a rotational flow field in radial and axial directions, and can enable frozen oil dissolved in gas to be separated out in a large proportion and flow back into a compressor oil pool, thereby improving an oil-gas separation effect of an oil-gas separation baffle.

The invention relates to a small low-nitrogen combustor and a combustion method, the small low-nitrogen combustor comprises a head air inlet assembly, a combustion cylinder assembly and a connecting assembly, the head air inlet assembly comprises a primary air inlet pipe, a central air distributor module, an axial swirler, a radial swirler, a fuel pipe and a premixed gas pipeline; the primary air inlet pipe is arranged at the inlet end of the central air distributor module; the premixed gas pipeline is arranged at the outlet end of the central air distributor module in a sleeving manner, and the axial swirler is arranged between the premixed gas pipeline and the outlet end; the fuel pipe and the radial swirler are respectively arranged at other positions of the central air distributor module; the head air inlet assembly and the combustion cylinder assembly are connected together through the connecting assembly. The method is obvious in nitrogen reduction effect and high in flame stability. Nitric oxide at an outlet is reduced by controlling the air amount of premixed gas and the rotational flow angle in the combustor, and meanwhile, the flame stability of the combustion center can be guaranteed through the inner circulation area.

According to the pressure generating device for well drilling, in the device, a plurality of upper rotational flow blades are located below an overflowing channel and arranged around a main shaft, and a plurality of lower rotational flow blades are located below the upper rotational flow blades and arranged around the main shaft; the upper overflowing disc is transversely fixed in the lower connector and comprises an upper main overflowing hole, an upper auxiliary overflowing hole and two needle valve holes. The axial bevel gear is in threaded connection with the bottom end of the main shaft, the radial bevel gears are matched with the axial bevel gear at 90 degrees respectively, and the two cams are fixedly connected with the radial bevel gears through key grooves respectively; the lower overflowing disc is transversely connected with the lower connector and located below the upper overflowing disc, the lower overflowing disc comprises a lower main overflowing hole and a lower auxiliary overflowing hole, the needle valves are arranged in the needle valve holes in a penetrating mode and located below the cam, circumferential rotation of the cam is converted into axial reciprocating motion of the needle valves, and the axial reciprocating motion of the needle valves enables the lower auxiliary overflowing hole to be opened and closed. The pressure of the drilling fluid is switched between a low point and a high point so as to generate periodic hydraulic pressure changes. The device relieves backing pressure and improves drilling efficiency.

The anti-rotation flow guide integrated radial seal comprises an anti-rotation flow guide structure and a plurality of sealing teeth, the anti-rotation flow guide structure and the sealing teeth are sequentially arranged on the inner surface of a sealing stator in the flowing direction, the anti-rotation flow guide structure is installed at an inlet of the sealing stator, high-speed circumferential rotational flow caused by pre-rotation of an air inlet can be weakened, and the anti-rotation flow guide effect is improved. And the pressure distribution between the air inlet and the adjacent sealing teeth of the anti-rotation flow guide structure can be changed, so that the excitation is reduced, and the leakage rate is reduced. Wherein the spiral line type anti-rotation flow guide structure is composed of a plurality of spiral flow guide plates distributed in the circumferential direction, a millimeter-level spiral deep groove area is designed at an inlet, the flow pattern of airflow is changed through the hydrostatic pressure effect, the circumferential rotational flow velocity of the surface of the rotor is reduced, and the kinetic energy dissipation of the airflow is increased. Or the spiral line type anti-rotation flow guide structure is a boss with a spiral flow guide groove, a reasonable groove type structure is designed according to the rotation direction of the rotor and the working condition so as to change the pressure distribution of the airflow, and the throttling and flow guide effects are achieved.

The invention provides a labyrinth sealing structure for enhancing sealing performance through inlet prerotation and interstage prerotation, and relates to the technical field of aero-engine and gas turbine sealing. A rotational flow device is additionally arranged in front of a labyrinth slit, so that flowing generates a tangential component, kinetic energy in the axial direction is decomposed into the combination of an axial component and the tangential component, the axial kinetic energy of airflow is reduced, the ventilation effect of the labyrinth slit is weakened, and then the sealing performance of labyrinth seal is enhanced. The height of the additional rotational flow device is slightly larger than the gap of the labyrinth slit, or the additional rotational flow device is given according to the machining level and does not invade a cavity formed by the labyrinth and the wall face as much as possible, and the total pressure loss induced by geometric sudden expansion is reserved to the maximum extent. The rotational flow ratio of air flow is reduced along with flowing, and in order to guarantee the on-way rotational flow ratio, rotational flow devices are also arranged between the labyrinth stages. For the rotating comb teeth, in order to achieve the maximum pre-swirling effect, the swirling device is arranged on the static wall face.

The invention provides a rib wall rotational flow gas film composite cooling device. The rib wall rotational flow gas film composite cooling device comprises a wall body, a plurality of disc-shaped rotational flow cavities are formed in the wall body in the cold air transverse flow direction, air film holes are formed between the edges of the disc-shaped rotational flow cavities and the outer wall face of the wall body, and inclined impact holes are formed between the edges of the disc-shaped rotational flow cavities and the inner wall face of the wall body. A plurality of turbulent flow ribs are arranged on the inner wall face of the wall body in the cold air transverse flow direction. On the basis of a ribbed channel, a composite cooling structure of rotational flow cooling and air film outflow is combined, efficient cooling of the turbine moving blade in a mid-chord area is achieved, and the capacity of the turbine blade for bearing higher heat loads is improved.

The invention discloses a two-stage rotational flow hydrogen fuel nozzle and a combustion chamber thereof. The nozzle comprises a main hydrogen flow path, an auxiliary hydrogen flow path and an air flow path; the hydrogen main flow path is provided with a plurality of main spray holes which are distributed in a circumferential array; the air flow path is provided with a two-stage cyclone; the hydrogen auxiliary flow path comprises a hollow annular flow divider, the flow divider is coaxially arranged around the periphery of the hydrogen main flow path, and a plurality of injection holes are formed in the inner wall and the outer wall of the flow divider and communicated with the first-stage rotational flow channel and the second-stage rotational flow channel respectively. In the using process, efficient mixing of fuel and air is achieved through the synergistic effect of graded injection of main and auxiliary hydrogen and two-stage rotational flow air. According to the combustion chamber provided with the nozzle, large-scale flames are decomposed into a plurality of small flames through micro-scale injection, two-stage rotational flow is combined for strengthening mixing, the backfire risk is effectively restrained, the combustion temperature is lowered, NOx emission is remarkably reduced, meanwhile, the combustion stability is improved, and a reliable solution is provided for hydrogen fuel combustion of an aero-engine.

The invention provides a glow plug hot surface ignition methanol machine adopting high-pressure rotational flow umbrella spraying, which relates to the technical field of methanol engines, and comprises a combustion chamber defined by a cylinder body, a piston and a cylinder cover, a methanol rotational flow umbrella spraying ejector and a glow plug, the piston is arranged in the cylinder body, and the cylinder cover is arranged at the top of the cylinder body; the piston is connected to the connecting rod; the methanol rotational flow umbrella spraying ejector is arranged in the cylinder cover and is communicated with the combustion chamber; the methanol rotational flow umbrella spraying ejector is used for spraying methanol into the methanol cylinder to form methanol umbrella-shaped spray; the glow plug is arranged in the cylinder cover and is communicated with the combustion chamber; and the glow plug is used for igniting the methanol umbrella-shaped spray sprayed into the cylinder body. According to the invention, the cylinder cover is punched and additionally provided with the glow plug, the methanol rotational flow umbrella spray ejector is arranged in the center of the cylinder cover, the methanol rotational flow umbrella spray ejector ejects methanol umbrella-shaped spray, and the methanol umbrella-shaped spray does not have a fuel rarefied area between methanol oil beams, so that efficient and clean diffusion combustion of the methanol machine can be realized.

The invention discloses a wind power type demisting device which comprises a demisting tower, a first rotational flow plate and a second rotational flow plate, a pressurizing cavity is formed in the side wall of the demisting tower, an air blower is arranged on the outer side of the pressurizing cavity, a wind power scraping and sweeping mechanism is arranged on the second rotational flow plate, and a rotational flow plate support is arranged in the demisting tower. The first rotational flow plate and the second rotational flow plate are installed on the rotational flow plate support and rotationally connected with the rotational flow plate support, the second rotational flow plate is located at the upper end of the first rotational flow plate, the pressurizing cavity comprises a transmission chamber and a backflow chamber, a partition plate is arranged between the transmission chamber and the backflow chamber, a reflecting plate is arranged in the backflow chamber, and a liquid discharging pipe is arranged at the bottom of the side end face of the backflow chamber. The demister has the advantages of high separation efficiency and convenience in maintenance, and solves the problems that a traditional demister is low in fine liquid drop separation efficiency, air pollution is easy to generate, the fine liquid drops are difficult to flow back after being separated, and secondary pollution is easy to generate.

The invention relates to the technical field of waste gas purification devices, and provides a packaging bag printing organic waste gas rotational flow purification system which comprises a gas inlet pipe, one end of the gas inlet pipe is fixedly connected with a rotational flow separation cylinder, the bottom of the rotational flow separation cylinder is fixedly connected with a dust discharge pipe, and the outer wall of the rotational flow separation cylinder is fixedly connected with a base. A flow guide plate is fixedly connected to the inner wall of the cyclone separation barrel, and a filtering separation mechanism is installed in the cyclone separation barrel. Waste gas is tangentially conveyed into the cyclone separation barrel, under the action of a plurality of flow guide plates arranged on the inner wall of the cyclone separation barrel, the waste gas can generate cyclone during conveying, large impurity particles in the waste gas are driven to be thrown to the inner wall of the cyclone separation barrel under the action of centrifugal force, the waste gas impacts an impeller, and the impeller is driven to rotate. An impeller rotates to drive a first rotating rod to rotate, and a filter plate fixedly connected with the outer wall of a second rotating rod rotates, so that the effect of separating and purifying particles in the waste gas is further improved.

The invention discloses a gas-liquid atomization rotational flow mixing reaction device which comprises a mounting bracket, the mixing reaction chamber is detachably mounted on the mounting bracket through a bolt; the communicating chamber is detachably mounted at the top of the mixing reaction chamber through a bolt; the gas-liquid separation chamber is detachably mounted at the top of the communicating chamber through a bolt; the atomizing nozzle is fixedly connected to the mixing reaction chamber; the driving unit and the indicating unit are installed on the pressure regulating unit, and one end of the gas feeding pipe is fixedly connected to the atomizing nozzle. By adopting a gas-liquid atomization and rotational flow self-stirring structure, the problems that traditional mechanical stirring is slow in mixing, poor in uniformity and unbalanced in local proportion are fundamentally solved, the phenomena of back mixing and short circuit are eliminated, the reaction is more sufficient, crystallization is more uniform, the yield is higher, meanwhile, a stirring mechanism is omitted, the device is simplified, energy consumption is reduced, parameters such as pH and temperature are fed back more timely, and the production efficiency is improved. And the control precision is greatly improved.

The invention discloses a porous medium sweating and cooling combustion chamber based on a ceramic matrix composite material, and relates to the technical fields of gas turbines, new energy and the like. In order to solve the problem of combustion instability such as combustion oscillation of a traditional gas turbine combustion chamber, a ceramic-based porous medium combustion chamber structure is adopted, liquid fuel infiltrates from the outer wall face of a porous medium and is evaporated and gasified on the inner wall, and then combustion occurs. The gasification reaction of the liquid fuel in the porous medium and on the wall surface can take away a large amount of heat, so that the effects of heat insulation, heat protection and wall surface cooling are achieved, and the combustion chamber can be protected from thermal damage. On the other hand, traditional jet flow or rotational flow combustion is replaced by wall face evaporation combustion, and combustion oscillation caused by uneven mixing or jet flow is avoided.

The embodiment of the utility model provides an oil-gas separator. The oil-gas separator comprises a shell provided with a separation cavity, the shell is provided with a gas outlet, an oil outlet and a fluid inlet which are communicated with the separation cavity, the gas outlet is located in the top of the shell, the oil outlet is located in the bottom of the shell, and the fluid inlet is located in the side wall of the shell and is close to the middle or the upper portion of the shell; the flow blocking component is arranged at the bottom of the separation cavity and used for blocking the oil liquid accumulated at the bottom of the separation cavity from rotating; the partition plate is arranged in the separation cavity and is close to the middle part of the separation cavity in the vertical direction; the partition plate is spread in the transverse direction so as to divide the separation cavity into a rotational flow space located above the partition plate and a flow stabilizing space located between the partition plate and the flow blocking component; a first gap is formed between the outer periphery of the partition plate and the inner wall of the separation cavity so as to communicate the rotational flow space with the steady flow space. The oil-gas separator has a good oil-gas separation effect.

The tower for cooling, dust removal and liquid removal of the high-dust gas comprises a tower body, the tower body is provided with an upper pressure cavity and a lower pressure cavity, and dust-containing gas enters from the lower pressure cavity and sequentially passes through a cyclone separator, a rotational flow tower disc and a wire mesh demister from bottom to top for liquid removal and dust removal. The switch control valve is opened, high-temperature gas purified by the lower pressure cavity can enter the upper pressure cavity and sequentially passes through the gas inlet distribution pipe, the packed tower tray and the V-shaped baffle plate demister from bottom to top, and meanwhile, cooling water from the outside sequentially passes through the cooling water feeding pipe, the packed tower tray and the groove tray type distributor from top to bottom; and heat exchange cooling between the cooling water and the purified gas is carried out in a filling manner. The switch control valve is used for controlling the flow of the purified gas to be cooled, and communication of the upper pressure cavity and the lower pressure cavity is achieved. By adopting the design, the functions of dust removal, liquid removal and gas cooling of the tower can be efficiently realized.

The invention belongs to the technical field of wind tunnel simulation, and particularly discloses a complex environment wind field simulation device, which comprises a test cabin, a fan system and a wind guide curtain assembly, the test cabin comprises a pressure stabilizing cabin, an inner cabin and an outer cabin, the fan system comprises a rotational flow fan, a horizontal flow fan and a vertical flow fan, and any cabin wall of the inner cabin is provided with a wind wall. An air return wall is arranged opposite to the air wall; the multiple rotational flow fans are evenly arranged in the circumferential direction of the bottom of the inner cabin at intervals. The vertical flow fans are uniformly distributed on the peripheral side walls of the pressure stabilizing cabin; a movable horn mouth is formed in the top of the inner cabin; the air guide curtain assembly is arranged in the inner cabin and comprises two groups of horizontal air channel roller shutters which are arranged in the inner cabin and can be unfolded or folded; the fan system, the horn mouth, the horizontal air channel roller shutter and the air guide curtain assembly are selectively started to form different closed wind environment modes, and simulation of a complex wind field coupled by multiple physical fields is achieved. The invention further discloses a simulation method using the complex environment wind field simulation equipment.

The invention discloses a multi-particle-size mineral particle screening system which comprises a feeding device, a first-stage rotational flow device, a second-stage rotational flow device and a filtering and grading device. The first-stage cyclone device comprises an outer-layer cyclone, an inner-layer cyclone and a first-stage overflow pipe which are sequentially arranged at intervals from outside to inside; the second-stage cyclone device comprises at least two sets of second-stage cyclone units, and each second-stage cyclone unit comprises a second-stage cyclone and a filter; the filtering and grading device comprises a grading box body, a first-stage filtering plate, a second-stage filtering plate and a third-stage filtering plate which are inclined towards the same direction are sequentially arranged in the grading box body from top to bottom, a collecting opening is formed in the lower end of each stage of filtering plate, a discharging opening is formed in the bottom of the grading box body, and the discharging opening is connected with the feeding device through a conveying pipe; and a conveying pump is arranged on the material conveying pipe. According to the system, the multiple pieces of cyclone separation equipment are combined with the filter screen for use, ores with different sizes are discharged respectively, water is separated out, and therefore finer ore classification is achieved.

The invention provides a supersonic rotational flow atomization dust removal spray head device and a spray pipe optimization simulation analysis method, and relates to the technical field of supersonic rotational flow atomization spray heads, the device comprises an air inlet pipe, a liquid inlet, a shell, a Laval spray pipe, an outer rotational flow pipeline and an atomization spray nozzle, the Laval spray pipe is arranged in the outer rotational flow pipeline, and the atomization spray nozzle is arranged in the shell; a wave elimination section of the Laval nozzle is connected with the atomizing nozzle, a spirally distributed liquid film circular seam is formed in the side wall of a mixing chamber at the lower end of a throat part of the Laval nozzle, and a spiral flow deflector is arranged at an outlet of the atomizing nozzle. Efficient dynamic interaction with rotating liquid supplied by the outer ring spiral channel occurs at the outlet of the nozzle, efficient fog drop crushing and uniform spraying are achieved through airflow acceleration and kinetic energy conversion, and it is guaranteed that the particle size of fog drops meets the requirements of capturing coal dust, improving the atomization efficiency, strengthening the wind resistance and reducing water consumption; better fogdrop particle size matching is realized; and the blocking risk is reduced.