8410 results about "Centrifugal force" patented technology

The invention discloses an intelligent suspension control system based on complex road condition recognition, relates to the technical field of automobile damping adjustment, and solves the technical problems that the system is difficult to adapt to complex and changeable road conditions, suspension parameters cannot be accurately adjusted in real time according to actual road conditions, and the performance of a vehicle under the complex road conditions is limited. After the road condition information acquisition module acquires data of various sensors, the road condition comprehensive identification and analysis module deeply analyzes the data and judges that a vehicle is in a curve or straight driving state, and when the vehicle is driven on the curve, the curve intelligent analysis module determines whether the vehicle is in a curve or straight driving state according to information such as the steering angle, the quality, the vehicle speed and the turning radius of the vehicle. The turning centrifugal force and the heeling moment are calculated by means of a vehicle dynamics model, the adaptive heeling rigidity and damping requirements are determined accordingly, current suspension parameters are compared, the hydraulic oil and damping hydraulic oil flow and pressure adjusting amount are calculated, and precise suspension regulation and control, vehicle heeling reduction and curve control stability strengthening are achieved.

The invention relates to the technical field of wind turbine generators, particularly provides a blade load evaluation method, electronic equipment and a storage medium, and aims to solve the problem of load evaluation after elastic deformation of blades of a wind turbine generator. Therefore, the blade load evaluation method provided by the invention comprises the following steps: acquiring a pre-constructed aeroelastic model and a blade tip loss coefficient database; based on the aeroelastic model and the blade tip loss coefficient database, iteratively calculating and determining the final deformation quantity of the blade; and determining at least one of an aerodynamic load, a centrifugal force load, a rotation load and a gravity load of the blade based on the final deformation quantity of the blade. According to the method, the final deformation quantity of the blade is determined through the pre-constructed aeroelastic model and the blade tip loss coefficient database, the deformation state of the blade can be accurately predicted, the aerodynamic load, the centrifugal force load, the rotation load and the gravity load are calculated based on the final deformation quantity of the blade, and high-precision data support is provided for design, operation and maintenance of the blade.

The invention belongs to the technical field of forging equipment, particularly relates to forging equipment and a forging method for improving the three-direction uniformity of a large aluminum alloy forge piece, and provides the following scheme aiming at the problems that the three-direction tensile property of the forge piece cannot be improved to the same level through existing forging equipment, and workers cannot be effectively protected. The forging equipment for improving the three-way uniformity of the large aluminum alloy forgings comprises a base, a frame body is fixed to the top of the base through a supporting rod, two electric push rods fixedly penetrate through the interior of the frame body, the same top plate is fixed to the top ends of output shafts of the two electric push rods, and a plurality of connecting rods are fixed to the bottom end of the top plate. Blanks can be overturned through rotation of the placing table, lifting of the lifting block and movement of the trapezoidal frame, so that the blanks can be forged by the forging head in different directions, different temperatures of the blanks in the hot forging furnace are achieved, and in addition, the hot forging furnace can be braked through cooperation of the shifting block and the check block under the action of centrifugal force.

The invention relates to the technical field of numerical control lathes, and particularly discloses a vertical numerical control lathe convenient for chip removal, which comprises a workbench provided with a clamp, and a driving assembly arranged on a machine tool and used for driving the workbench to rotate; a chip removal groove is formed in the workbench, a filter cylinder communicating with the chip removal groove is coaxially and fixedly arranged at the bottom of the workbench, and chips sequentially pass through the chip removal groove and the filter cylinder to enter the bottom of the workbench. Cooling liquid is discharged through the side face of the filter cartridge under the action of centrifugal force, and chippings are discharged through the bottom of the filter cartridge; an extrusion plate is slidably assembled on the side wall of the chip groove towards the inner wall of the filter cylinder, an adjusting assembly matched with the extrusion plate is arranged on the machine tool, and when the filter cylinder rotates, the adjusting assembly drives the extrusion plate to get close to the filter cylinder in a reciprocating mode to extrude chips passing through the filter cylinder; the vertical numerical control lathe facilitating chip removal has the effect that chips in parts can be removed in time.

The invention discloses an automatic grinding system for hardware die castings, and relates to the technical field of grinding of die castings. An automatic polishing system for hardware die castings comprises a polishing module arranged on a base, the polishing module comprises a mounting plate slidably mounted on the base, a first mounting pipe is rotatably mounted on the mounting plate, and a first limiting belt wheel is fixedly mounted on the first mounting pipe; a tensioning wheel assembly is arranged on the side face of the mounting plate, and a second limiting belt wheel is rotationally arranged at the output end of the tensioning wheel assembly; the wheel type pressing part of the rolling belt pressing assembly is used for replacing a traditional plane pressing block, sliding friction is converted into rolling friction, the contact area is reduced, friction heat is dispersed, and the risk that an abrasive belt base is fiberized and cracked due to high temperature is reduced; after polishing is completed, the expansion assembly drives the abrasive belt to be bent to the back included angle of 15-35 degrees, abrasive particle gaps are expanded, dust can naturally fall off by means of centrifugal force and gravity when the abrasive belt idles, and the contact area of the abrasive belt and air can be increased to accelerate heat dissipation.

The present invention relates to the technical field of electric spark discharge machining, and discloses an electrode structure, an electric spark machining device and a machining method, wherein the electrode structure includes a connecting member, whose axis is a first axis, and one end of the connecting member has a mounting portion; the electrode is hinged to the mounting portion through a hinge shaft, and the axis of the hinge shaft is a second axis; one end of the biasing member abuts against the connecting member, and the other end abuts against the electrode, applying a biasing force to the electrode tending to remain in the mounting portion; the connecting member can be driven to rotate around the first axis, and the electrode deflects out of the mounting portion and rotates around the second axis when the connecting member rotates. This allows the electrode to extend into a guide hole machined on a workpiece when the connecting member is not rotating, and to deflect out of the mounting portion to machine a rotating inner cavity or inner hole when the connecting member rotates to generate centrifugal force, thereby solving the problem that the electric spark equipment in the prior art cannot machine a rotating inner cavity or inner hole whose inner cavity diameter is larger than the orifice.

The invention belongs to the technical field of drying equipment, and particularly relates to a double-cone vacuum dryer and a silver nitrate drying method.The double-cone vacuum dryer comprises a stock bin, a gas circuit mechanism, a heat source mechanism, a first power mechanism, a blowing adjusting mechanism and a second power mechanism; a second power mechanism drives an arc-shaped plate in a blowing adjusting mechanism to rotate back and forth relative to the transfer bin so as to adjust the direction and the flow speed of the hot nitrogen blown out of an upper opening of the transfer bin, and when the arc-shaped plate rotates clockwise, the silver nitrate wet material which is turned upwards under the action of centrifugal force is blown away; the second power mechanism is matched with the blowing adjusting mechanism to adjust the blowing-out direction and the blowing-out flow speed of hot nitrogen in a reciprocating mode, it can be guaranteed that a dry layer on the surface of the silver nitrate wet material is broken, and the problem that the silver nitrate wet material splashes after the dry layer on the surface of the silver nitrate wet material is broken can be solved; the problems that after a drying layer is formed on the surface of the silver nitrate wet material, the internal heat and mass transfer path is lengthened, and the drying efficiency and the drying time are affected are solved.

The invention discloses a wafer rotary drying mechanism which comprises a rotary platform. The multiple clamping jaws are connected to the rotating platform, and the multiple clamping jaws are distributed in the circumferential direction at intervals; one side, facing the wafer, of the clamping jaw is provided with a supporting surface and a clamping surface, or the clamping jaw and the rotating platform are matched to form the supporting surface and the clamping surface, and the supporting surface and the clamping surface are used for jointly clamping the wafer; a centrifugal liquid guiding and discharging groove is formed between the supporting surface and the clamping surface, when the wafer is clamped by the supporting surface and the clamping surface, at least part of the centrifugal liquid guiding and discharging groove is located below the height of the lower surface of the wafer, and when the wafer rotates, liquid remaining on the back face of the wafer enters the centrifugal liquid guiding and discharging groove under the action of centrifugal force and is discharged outwards through the centrifugal force. The centrifugal liquid guiding and discharging groove is designed, so that a guiding and discharging space for liquid flowing through the supporting surface in the radial direction and nearby the supporting surface to leave the wafer can be provided in the centrifugal rotary drying process, and residual liquid can be discharged smoothly.

The invention discloses a self-cleaning mechanism of a differential rotation type multi-stage air purification filter cartridge, and relates to the technical field of air purification equipment. The device comprises a purification shell, a first filter cartridge is arranged in the purification shell, the surface of the first filter cartridge is sleeved with a second filter cartridge, and the surface of the second filter cartridge is sleeved with a third filter cartridge; a driving assembly is arranged at the top of the purifying shell and comprises a driving motor arranged at the top of the purifying shell and a transmission rod installed at the output end of the driving motor. Through meshing transmission of a sun gear and a planetary gear in the driving assembly, differential rotation of the first filter cartridge and the second filter cartridge is achieved, attached particles are stripped in a layered mode through centrifugal force, the self-cleaning efficiency is remarkably improved, the differential design breaks through a static filtering mode of a traditional filter cartridge, particulate matter deposition inertia can be actively destroyed, and surface dust accumulation of a filter material is reduced; the problem of filtering efficiency attenuation caused by dust accumulation is avoided, the service life of the filter cartridge is prolonged, and the maintenance frequency is reduced.

The utility model discloses a multifunctional industrial wastewater treatment device, and the utility model relates to the technical field of multifunctional industrial wastewater treatment devices. A second water inlet pipe is provided inside the centrifugal cylinder, a water outlet groove is provided at the bottom of the second water inlet pipe, a guide plate is fixedly connected to the inner wall of the centrifugal cylinder, a slag discharge groove is provided at the bottom of the centrifugal cylinder, and a plurality of oil outlet holes are provided above the centrifugal cylinder. The centrifugal force after the centrifugal cylinder rotates to full speed separates the wastewater with heavy weight from the residue and grease. Due to its own light weight, the grease is thrown into the inner cavity of the treatment cylinder through the oil outlet hole, and the heavy residue is deposited downward. When the set slag discharge cycle is reached, the slag discharge starts, and the scraper scrapes the grease adhered to the inner wall of the treatment cylinder and discharges it through the second slag discharge pipe. The sealing ring opens the slag discharge groove upward, so that the residue inside the centrifugal cylinder is discharged to the outside of the device through the slag discharge pipe, so as to avoid the grease adhering to the inner wall of the treatment cylinder and affecting the treatment efficiency of the wastewater.

The utility model relates to a foldable propeller and a cross-medium aircraft with the same, the foldable propeller comprises a propeller hub controlled to rotate, a limiting structure arranged at the end part of the propeller hub and a plurality of blades uniformly arranged around the axis of the propeller hub, and each blade is hinged with the propeller hub; the hinged axis between the paddle and the propeller hub is perpendicular to the rotating axis of the propeller hub, and the limiting structure is located at the front end of the propeller hub in the direction of the pulling force generated when the paddle rotates along with the propeller hub; when the propeller hub rotates, the blades hinged to the propeller hub rotate and unfold under the action of centrifugal force to abut against the limiting structure. When the propeller hub stops rotating, the blades hinged to the propeller hub are folded to be close to the rotating axis of the propeller hub due to self weight or fluid resistance in the underwater flight process. The propellers are configured to be of a foldable structural form, so that the propellers are not prone to being impacted by water flow and damaged, meanwhile, turbulent flow generated when the water flow passes through the propellers is reduced, and the speed and stability of the cross-medium aircraft in the underwater flight process are improved.

The utility model discloses a flotation machine scraper cleaning device which comprises a mounting plate, a rotating shaft is rotatably connected to the interior of the mounting plate, a rotating roller is fixedly installed at the end of the rotating shaft, when a scraper in a flotation machine needs to be cleaned, the rotating shaft rotates and drives the rotating roller to rotate along with the rotating shaft, and under the action of centrifugal force, the scraper in the flotation machine is cleaned. A limiting groove formed in the outer wall of the scraping plate slides on the outer wall of a limiting block fixedly installed on the inner side of the sliding frame, an I-shaped balancing weight slides in the sleeve frame under the action of centrifugal force and gravity and pushes a limiting plate, the limiting plate and the scraping plate are thrown out of the sleeve frame, the scraping plate can conduct flotation work at the moment, and along with rotation of the scraping plate, the sleeve frame is far away from a flotation tank; at the moment, the I-shaped balancing weight slides towards the interior of the sleeve frame, the limiting plate is driven to slide along with the I-shaped balancing weight, the scraping plate slidably arranged on the inner side of the limiting plate slides towards the interior of the sleeve frame along with the limiting plate, the outer wall of the scraping plate makes contact with the scraping frame arranged on the outer wall of the sleeve frame, and impurities attached to the outer wall of the scraping plate are scraped and cleaned under the limitation of the scraping frame.

The invention discloses a non-contact polishing device based on a structured surface polishing tool. The non-contact polishing device comprises a working platform, a workpiece clamping driving assembly and a polishing solution pressurizing assembly are correspondingly arranged on the working platform; the polishing solution pressurizing assembly comprises a structured surface polishing tool correspondingly arranged below the workpiece clamp. The structured surface polishing tool is of a groove-shaped structure, the bottom of the structured surface polishing tool is in a conical surface shape with the outer portion higher than the inner portion, and shifting rods distributed in a radial shape are arranged on the conical surface in groups. During working, polishing liquid in the structured surface polishing tool can be dispersed towards the edge of the polishing tool driving device under the synergistic effect of centrifugal force and the shifting rod, and the pressure of the polishing liquid acting on the surface of a workpiece to be machined is increased. In the machining process, the polishing solution forms a continuous flow field on the surface of the workpiece, then the force rheological polishing solution generates shear stress on the surface of the workpiece to be machined, the material on the surface of the workpiece is evenly removed, the pressure, acting on the surface of the workpiece, of the force rheological polishing solution is improved through the structured surface polishing tool, and the polishing efficiency is improved.

The invention discloses an S-shaped micro-channel heat dissipation device with a double-layer turbulent flow structure and a use method, belongs to the field of liquid cooling heat dissipation, and is suitable for heat dissipation of a high-heat-flux device or a heat conduction device. The device comprises a base, a cover plate, a micro-channel body, turbulent flow columns, a flow guide structure, O-shaped sealing rings and quick-screwing connectors, the micro-channel body is provided with S-shaped channels which are vertically symmetrical, the turbulent flow columns are evenly arranged in the centers of the channels, and the top ends of the turbulent flow columns are flush with the end face of the micro-channel body. The turbulent flow columns can be rectangular columns or water-drop-shaped columns which are arranged in a single row or multiple rows at equal intervals and are matched with the flow guide structure to achieve efficient flow division of cold and hot fluid and interlayer heat interaction. Fluid mixing is strengthened through the centrifugal force of the S-shaped channel, a heat boundary layer is destroyed by the turbulent flow columns, and the problems that a traditional straight channel is low in heat exchange efficiency and uneven in temperature distribution are solved. Deionized water or nanofluid is selected as cooling liquid, closed circulation is formed by entering and exiting of the cooling liquid through the quick-screwing connector, and the adaptive scene and the comprehensive performance of the device are further expanded through the multiple rows of turbulent flow columns or the water-drop-shaped turbulent flow columns.

The invention focuses on the field of online turbidity analysis of industrial circulating water, and provides an innovative analysis method. According to the method, a two-stage defoaming and dynamic calibration collaborative strategy is adopted to solve the problem that a traditional online turbidity meter is easily interfered by bubbles and temperature fluctuation in a low-turbidity environment, so that the measurement error is large. Primary defoaming is completed by arranging a porous bubble adsorption layer in a flow cell, and secondary defoaming is realized by virtue of centrifugal force of rotating blades of a centrifugal degassing unit; double light paths (infrared light and visible light) are used for cross validation of turbidity signals, and the light path sensitivity is dynamically adjusted according to the water turbidity; and constructing a temperature-turbidity correlation model to correct the temperature drift influence in real time, and constructing a historical data trend library to predict the turbidity change. Through application of a chemical plant circulating water system, the error in a low-turbidity scene is remarkably reduced, and the stability is greatly improved.

The invention discloses tea juice treatment equipment, and relates to the technical field of tea juice treatment. The device comprises a separation net provided with a through hole, a cutter head and a dial wheel plate crushing assembly which are coaxially arranged up and down, an adjustable magnetic coupling driving part composed of an electromagnet and a planetary gear, a bidirectional flow centrifugal separation chamber, a filter element fine filtration cavity and a non-stop screw deslagging mechanism. Flushing wastewater is actively pre-crushed and then tangentially guided to a centrifugal cavity, and solid and liquid are rapidly separated under the synergistic effect of centrifugal force and suction pressure difference; a liquid phase is subjected to center suction, refined filtration, clarification and discharge, and a solid phase settles along the inner wall and is automatically conveyed to the outside for sealed collection. According to the system, the rotating speed is adjusted in a closed-loop mode through online particle monitoring, load self-adaption and low-energy-consumption operation are achieved, filter screen blockage, shutdown cleaning and peculiar smell diffusion are avoided, and the system is suitable for on-site up-to-standard treatment of tea residue sewage in the peak period of a catering store.

The invention relates to the technical field of blade monitoring, in particular to a long flexible blade real-time monitoring and fault early warning method which comprises the steps that vibration signals of a long flexible blade in the running state are collected, and the vibration signals are subjected to the aerodynamic load, gravity and centrifugal force multi-factor coupling effect; constructing an overdetermined equation set containing a multi-source excitation characteristic based on the blade dynamic model; decomposing the vibration signal by adopting a sparse decomposition algorithm to obtain a signal decomposition result; based on the signal decomposition result, solving the overdetermined equation set to obtain modal parameters of each coupling vibration source; and determining a state monitoring result of the long flexible blade according to the modal parameters of the coupling vibration sources.

The invention discloses a guide constraint control method for a maglev high-speed rail under network attacks, and belongs to the field of rail transit. The method adopts a dynamic air gap constraint and boundary layer sectional type continuous adjustment technology to perform anti-network attack control on the maglev high-speed rail guide system: establishing a dynamic mathematical model and a lateral centrifugal force model of the maglev high-speed rail guide system, and further obtaining a state-space equation and a centrifugal force suppression control rate of the maglev high-speed rail guide system; constructing a satellite navigation network attack model of the maglev high-speed rail track and driving information; converting a state-space equation of the magnetic levitation high-speed rail guiding system into a control equation of the magnetic levitation high-speed rail guiding system containing wind shear disturbance and guiding force mismatch matching interference; dynamic constraint control is adopted, a guiding controller is designed, and guiding constraint control over the magnetic levitation high-speed rail under network attacks is achieved. While the starting stability of the maglev high-speed rail is improved, mismatch of the guiding force is rapidly compensated, and stable operation of the maglev high-speed rail is guaranteed.

The invention discloses an anti-clogging water supply and drainage filtering device, and relates to the technical field of water supply and drainage filtering, the anti-clogging water supply and drainage filtering device comprises a water supply and drainage pipeline, and the front end and one side of the water supply and drainage pipeline are respectively provided with a water inlet and a water outlet. The driving motor drives the supporting shaft A to enable the rolling brush to revolve, the rolling brush reversely rotates by means of the fluted disc A and the gear ring A, and dynamic shearing force is formed to efficiently strip impurities on the surface of the filter screen; the inclined push plate and the rolling brush guide the stripped impurities into the impurity guide piece through centrifugal force, and the spiral piece is combined for discharging, so that secondary blockage is avoided; the supporting shaft A is linked with the supporting shaft B through the belt pulley group, so that the filter screen reversely rotates at a constant speed, the relative speed of the rolling brush and the filter screen is multiplied, the impurity stripping effect is enhanced, loose impurities are thrown to the edge of the filter screen through centrifugal force, the accumulation risk of a central area is reduced, and self-cleaning of the filter screen, directional discharging of the impurities and dynamic prevention and control of the blocking risk are achieved through the mode. The continuous operation efficiency of the water supply and drainage filtering device is effectively improved, and maintenance cost and energy consumption are reduced.

The high-precision turning, milling and grinding integrated machining special machine for the tail of the screw of the injection molding machine comprises a machine body, and a mechanical arm used for feeding and discharging is installed on the front side of the top of the machine body. Through cooperative use of the moving mechanism, the left end clamping mechanism and the machining mechanism, the two ends of a single-screw rhomboid screw or an auxiliary-screw rhomboid screw can be clamped and fixed no matter the single-screw rhomboid screw or the auxiliary-screw rhomboid screw is machined, the clamping mode does not generate a dead angle area, the traditional mode that clamping is conducted only through the single end is changed, the situation that a workpiece is affected by centrifugal force is avoided, and the machining efficiency is improved. Therefore, the accuracy of thread engraving and milling is improved, waste chips generated by engraving and milling can be collected in the waste collecting box, and the cleanliness of the environment is guaranteed; besides, a storage mechanism and a detection mechanism are arranged for cooperative use, a milling cutter, a grinding head and a drilling head used in the machining process can be automatically replaced, threads on machined workpieces can be detected, substantive improvement is achieved, and the device is beneficial to application and popularization.

The utility model discloses a high-precision airflow classifier, and relates to the technical field of sorting. The high-precision airflow classifier comprises an airflow classifier shell and a classification device, the classification device comprises a feeding port, the feeding port is fixedly connected to the upper end of the airflow classifier shell and extends into the airflow classifier shell, the upper end of the feeding port is fixedly connected with a driving motor, and the output end of the driving motor is fixedly connected with a rotating shaft; the lower end of the rotating shaft is fixedly connected with a dispersing disc, the surface of the dispersing disc is fixedly connected with baffles, the surface of the dispersing disc is rotationally connected with blades, and resin raw material particles collide with the baffles and the blades through the centrifugal effect of rotation of the dispersing disc, so that the resin raw materials are scattered, and the resin raw materials are evenly distributed in the airflow classifier shell; the uniform distribution ensures that the resin raw materials can be subjected to uniform airflow and centrifugal force, so that the stability and precision of the grading process are improved, and the grading efficiency of the device is improved.

The invention relates to the technical field of implant processing, and discloses a processing device and method for efficiently producing implants.The processing device for efficiently producing the implants.The processing device for efficiently producing the implantscomprises a base, driving mechanisms are arranged on the front side and the rear side of the top of the base correspondingly, and a transmission mechanism and a lifting mechanism are arranged on the top of each driving mechanism; the top end of the lifting mechanism is connected with tool handles, a turning tool and a milling tool are arranged in the two tool handles respectively, the transmission mechanism comprises a driving plate, a sealing box, a sealing plate and a piston plate, a push plate is fixedly installed between the driving plate and the sealing plate, and the sealing plate and the piston plate are installed in the sealing box in a sliding and sealing mode. The design is reasonable, dynamic self-adaptive adjustment of clamping force is achieved through linkage of centrifugal force and a hydraulic system, when the rotary drum rotates at a high speed, the balance weight plate moves outwards under the centrifugal effect, hydraulic oil is pushed to enter the sliding groove, the pressure on the sliding plate is increased, and therefore the fastening force of the clamping plate on raw materials is automatically increased.

A small powder two-dimensional mixer, comprising a mixer body and a support fixedly mounted at the bottom of the mixer body. An inner tank is connected to the interior of the mixer body; a mixing device is provided in the inner tank; the mixing device comprises a stirring unit, a scraper unit, and a cleaning unit; the scraper unit comprises through grooves, movable rods, first centrifugal blocks, second scraping plates, springs, second centrifugal blocks, connecting plates, third scraping plates, and elastic ropes. According to the small powder two-dimensional mixer, under the action of centrifugal force and restoring force of springs, the first centrifugal blocks can perform reciprocating sliding within a certain range, and the second scraping plates can be driven to continuously scrape the surfaces of stirring blades during the reciprocating sliding of the first centrifugal blocks, so as to scrape off main materials and auxiliary materials attached to the surfaces of the stirring blades, thereby preventing attachment of the main materials and the auxiliary materials to the stirring blades from affecting subsequent mixing, and avoiding reduction of mixing efficiency.

The invention discloses a wind turbine blade semi-coupling aeroelastic modeling method considering nonlinear deformation, and belongs to the technical field of fan simulation calculation. In combination with calculation parameters used by three-party software, establishing a blade structured load model and a blade correction aerodynamic model, calculating an aerodynamic load and a structural load, and superposing: superposing the aerodynamic load, the gravity load and the centrifugal force load of the blade as an external load of a nonlinear structure control equation of the blade, and taking the external load as a calculation parameter; according to the method, the blade nonlinear structure model and the semi-coupling simulation process of the three-party wind turbine simulation software are constructed, and under the same simulation environment and load conditions, the blade nonlinear structure model and the three-party wind turbine simulation software can be subjected to semi-coupling simulation, so that the blade nonlinear structure model and the three-party wind turbine simulation software can be subjected to semi-coupling simulation calculation. The higher-precision non-linear motion response characteristics of the super-long flexible wind turbine blade are calculated, and a good effect can be achieved in the aspects of initial structure design and response evaluation of the large wind turbine blade.

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 gas production wellhead devices, and particularly relates to a sulfur-resistant and carbon dioxide-resistant gas injection and production wellhead device which comprises an injection and production four-way assembly, a crossover flange assembly and a desanding assembly. The desanding assembly comprises a first pipe body, a second pipe body, a treatment box, a desanding barrel, one end of the desanding barrel, an inner spiral piece, a spiral groove, an air cylinder and an internally-tangent spiral blade. When the air pressure of the natural gas is reduced, the air cylinder pushes the internally-tangent spiral blade downwards through the bearing, the internally-tangent spiral blade rotates along the spiral groove in the downward pushing process, the path of the natural gas passing through the inner spiral blade is reduced, the centrifugal force of the natural gas is increased along with increase, and gravel in the natural gas can be thrown out of the sand removing barrel. Due to the fact that the pressure of the natural gas is reduced, a vortex-shaped gas column is formed on the shaft portion of the desanding cylinder and begins to diffuse, when the natural gas passes through the internally-tangent spiral blade, the internally-tangent spiral blade can guide the diffused gas column, the diffused gas column is gathered towards the shaft portion of the desanding cylinder again, the stability of the gas column is improved, and the influence of the gas column on gravel is reduced.

To study a system that transmutes atomic nuclei using muons, devise a light source device and a propulsion device including a nuclear transmutation system, and examine a centrifugal force application unit which may be accelerated by the propulsion device, and devise an electric field generator or a magnetic field generator.SOLUTION: A system is devised that decelerates cosmic muons produced from cosmic rays or high-speed muons derived from mesons produced from atomic collisions with electric field and deceleration means and uses the muons for nuclear transmutation. Also, a decelerator using a laser wake field and a decelerator using an element forming an electric field are proposed. A radiation light source having the nuclear transmutation unit is disclosed. An ionization device, a centrifugal gun device, a centrifugal force and pressure applying device, a pressure generation unit, a pressure applying material, a high-pressure induction superconductivity experimenting system, a magnetic device, and a magnetic sail are disclosed.SELECTED DRAWING: Figure 18

The invention discloses aluminum alloy plate casting equipment and an automobile plate casting method, and relates to the field of casting equipment.The aluminum alloy plate casting equipment comprises a machine table, a movable mold base and a fixed mold base are arranged on the machine table, a movable mold is rotationally connected to the movable mold base, a fixed mold is rotationally connected to the fixed mold base, and the movable mold base can horizontally move on the machine table; the fixed die can drive the movable die to rotate, a feeding pipe and a punch are connected to the movable die, a feeding hole is formed in the feeding pipe, the punch is arranged in the feeding pipe, and when the punch presses raw materials into the die cavity, the movable die and the fixed die rotate. Molten aluminum alloy is moved towards the edge of the mold cavity through centrifugal force and is injected into the center of the mold cavity in a matched mode, so that the mold cavity is rapidly filled with the molten aluminum alloy, the forming efficiency is improved, the filling effect of the molten aluminum alloy on the edge of the mold cavity is good, the forming quality of a product is improved, and the product is not prone to bubbles or defects. The cooling problem of the rotatable fixed mold is solved, and the product cooling effect is guaranteed.

The invention belongs to the technical field of gas turbine blade test equipment, and relates to a multi-gas-path coordinated regulation high-temperature blade gas thermosetting rotation test system, which comprises a test shell, a transmission shaft, a rotation assembly, a high-temperature gas supply assembly, a cooling gas supply assembly and a detection assembly. The transmission shaft can be driven to rotate through the rotating assembly, centrifugal force load borne in the actual operation process is simulated, high-temperature gas is conveyed into the test shell through the high-temperature gas supply assembly, a high-temperature environment is provided for the tested turbine blade, and thermal load borne in the actual operation process is simulated; cooling gas is conveyed into the tested turbine blade through the transmission channel by the cooling gas supply assembly, the cooling environment in the actual operation process is simulated, and finally various data of the test are detected through the detection assembly. Therefore, the flow heat transfer characteristic and the strength characteristic of the turbine blade under the actual operation condition can be obtained as far as possible through tests.

The invention provides a water-air two-domain self-adaptive state switching efficient propelling folding propeller, which comprises a propeller hub, a propeller blade, a propeller blade, a propeller blade and a propeller blade, the N fixed paddles are uniformly distributed on the side wall of the cylinder in the circumferential direction; the inner sides of the fixed paddles are fixedly connected with the outer surface of the side wall of the cylinder; the fixed blades are arranged along the water pushing direction; the outer side of the fixed paddle is bent upwards, and a connecting plate is arranged at the end part of the outer side; the N folding and unfolding paddles are correspondingly mounted at the outer ends of the fixed paddles, and each folding and unfolding paddle comprises a blade and a root ring fixedly connected with the root of the blade; the N rotating joints comprise pin shafts, and the pin shafts penetrate through the connecting holes and the root ring; wherein N is greater than or equal to 3; when the propeller hub rotates and is located above the water surface, the folding and unfolding blades are unfolded under the action of centrifugal force; and when the paddle is located below the water surface, the folding and unfolding paddle is folded under the action of water resistance. The efficient propelling folding paddle has sufficient propelling power in water and is high in water-air transition efficiency. The invention also provides an unmanned aerial vehicle equipped with the efficient propelling folding paddle.