171 results about "CENBOL" patented technology

The invention provides a permeability testing method and device based on a radial percolation experiment and belongs to a permeability testing method and device. A hole is formed in the center of a tested coal sample, gas permeates the central round hole from one side, and the permeability is tested on the basis of the radial percolation experiment and is contrasted with that obtained with a traditional axial percolation testing method. The device comprises a gas source steel cylinder, a gas flow and pressure control system, an axial loading system and a data acquisition and analysis system. Firstly, a cylindrical rock sample with a hole in the center is prepared, then gas confining pressure is applied from one side after the rock sample is arranged on a rock sample placement table, the axial loading mechanism loads axial pressure, and the gas permeates the central round hole in the radial direction from one side and then is exhausted from an exhaust port. The permeability testing method and device have the advantages as follows: the radial percolation capacity of the gas along a sample rock core is tested; methane gas provides confining pressure, which is more realistic for gas extraction research; the problem that experiments fail due to the fact that high-pressure oil is likely to permeate coal under a traditional three-axis stress condition is solved; and stress of the sample can be monitored conveniently.

A sample collection device for a fluid includes: a substantially disk-shaped body having a periphery; a capillary channel extending through the body and bounded by the periphery, having a first end and a second end, wherein the first end is adapted to draw the fluid into the channel by capillary action; a sample collection well located in the vicinity of the second end and in fluid communication with the capillary channel; and an axis of rotation extending through the center of the disk and which is substantially perpendicular to the major surface of the disk-shaped body. In a preferred embodiment, the sample collection device is adapted to rotate about the axis of rotation within a cartridge having a housing comprising an air vent in fluid communication with the capillary channel when the disk is rotated in a first position.

The invention discloses a high-flux high-dirt-holding-capacity filtering element, which comprises a filtering medium layer (3), a central tube (2), a shell (1) and upper and lower end covers (10, 11), wherein the filtering medium layer (3) is folded into an arc-shaped fold and then encloses the central tube (2), and the whole is cylindrical; the shell (1) is sleeved outside a cylindrical filtering medium; the filtering medium layer comprises a filtering layer (3b) and plastic net layers (8) which are positioned on two sides of the filtering layer; the filtering layer consists of at least two layers of filtering materials (3d); and the upper and lower ends of the central tube (2) and the shell (1) are fixedly connected with the upper and lower end covers. A high-flux folding filtering element is wide in runner, relatively low in fluid resistance, and more uniform in flow distribution of water inlet and outlet ends of the filtering element. Compared with the conventional W-shaped linear fold designing filtration membrane, the high-flux folding filtering element is improved by over 30 percent in terms of filling density, large in filtering area, high in total dirt-holding capacity and long in service life of the filtering element.

The invention discloses a combined central body cavitating nozzle and relates to the field of high-pressure water jet nozzles. The combined central body cavitating nozzle comprises a semi-elliptic cylindrical central body, a central body fixing seat and a nozzle seat, wherein the central body has low resistance on the inflowing liquid, the liquid has high energy, after the inflowing liquid enters an internal flow channel of the nozzle, the overflowing section area is suddenly reduced due to the action of the semi-elliptic cylindrical central body, the fluid is accelerated, two strands of high-speed fluid are mixed in a shrinkage channel, inner cavitation bubbles are generated due to the turbulent flow of the central body, the main stream flows out of an outflow straight channel, and peripheral cavitation bubbles are generated due to the shearing functions of the high-speed fluid and air at the outlet. Therefore, the cavitation bubbles are present at the periphery of jet beam and inside the jet beam, and the instantaneous pressure generated by momentum change of high-speed fluid and collapse of the cavitation bubbles generates dual functions on the acted objects. The nozzle has wide high-efficiency working area and good effects of eroding and striking the acted objected.

The invention relates to a multi-corner tangential multi-scale pulverized coal decoupling combustion device and a decoupling combustion method thereof; based on pulverized coal combustion characteristics and substance transformation rules, in a microcosmic scale, each column of primary air nozzles (3) on a multi-corner tangential combustion furnace hearth is arranged in a manner that at least 2 or more than 2 nozzles are centralized and adjacent to each other up and down, and the nozzles (3) are relatively centralized at an area in the hearth close to the flame center and with a very high temperature, so multi-area horizontal front-and-back fractional combustion is realized; in a medium scale, second-stage secondary air nozzles (1) are arranged in a local centralization mannerto form a strong reducibility area and a weak reducibility area or a weak oxidability area respectively before and after mixing with the primary air nozzles (3), so multi-area horizontal left-and-right fractional combustion is realized; in a macroscopic scale, peripheral over-fire air nozzles (8) and center over-fire air nozzles (9) are disposed to respectively form a reducibility area and an oxidability area at the lower and upper parts of the hearth, so vertical up-and-down air fractional combustion is realized.

The invention discloses a supergravity rotating bed device adopting sectional type liquid feeding mode to strengthen the rotor end effect, belonging to the technical field of supergravity. The device disclosed by the invention comprises a closed shell, wherein a rotating shaft penetrating through each shell section is arranged in the center of the shell; a filler layer is arranged in a rotor; a liquid inlet, a liquid outlet, a gas outlet and a gas inlet are formed on a cavity; multiple liquid feeding shower pipes which are concentrically distributed are radially fixed in a sectional mode on the lower end surface of a cavity gland; the filler layer comprises multiple sections of annular filler layers which are distributed in a radial parallel mode along the rotating shaft; and the liquid feeding shower pipes are distributed between every two adjacent sections of annular filler layers. Multiple end effect regions are manufactured on rotor filler layers by adopting a sectional type liquid feeding mode, thereby enabling all fillers to be fully utilized and achieving the purpose of strengthening mass transfer; and the mass transfer efficiency can be improved by 40-60%. The device disclosed by the invention is suitable for a reaction system requiring long reaction retention time and large mass transfer coefficients and is particularly suitable for gas-liquid absorption systems and the like which include viscous fluid transfer courses and are difficult to implement. The device disclosed by the invention can be used for a vertical rotating bed or a horizontal rotating bed.

The invention relates to the field of chemical liquid spraying treatment, in particular to a device for chemical liquid spraying treatment of a silicon wafer or other round lamellar objects, wherein a microelectronic device is further prepared by processing a wafer made of a semiconductor material. The device comprises a processing cavity, a rotating and elevating mechanism and a cover plate, the processing cavity is provided with an outer-layer side wall and an inner-layer side wall which are radially arranged and form a double-layer hollow structure, the inner-layer side wall is formed by stacking two or more layers of collection rings, the collection rings are all concave structures with perforated centers and are provided with drain ports at the bottom, an exhaust seam is arranged between two adjacent connection rings, a round lamellar object is placed on the rotating and elevating mechanism, and the cover plate is in a movable structure. The invention can effectively prevent the problems of acid mist, particle pollution and the like, and when the device is used to spray different chemical liquids, a rotation disc is elevated to different collection rings correspondingly so as to collect different chemical liquids separately and avoid cross pollution.

The invention belongs to the technical field of seepage monitoring, and particularly relates to a method for monitoring two-dimensional seepage in a large-scale single-fractured medium. The method comprises the following steps: cutting the large-scale fractured medium to obtain an upper sample and a lower sample which are vertically superposed; arranging a center drilling hole and radiation drilling holes in the middle of the upper sample; arranging a stress sensor on the upper port of the radiation drilling hole; arranging flow rate collectors and flow velocity test devices around the lower sample; injecting a water flow from the center drilling hole of the upper sample to swarm the water flow into the radiation drilling holes to form a plurality of seepage paths to finally flow out form a level fracture surface between the upper sample and the lower sample, and measuring water pressure values and water flow velocities of different seepage paths to obtain lengths of different seepage paths and seepage coefficients at different water pressure conditions. The method can effectively achieve the test monitoring on the two-dimensional seepage performance of the large-scale single-fractured medium, and the high-reliability seepage coefficients of the two-dimensional seepage in the large-scale single-fractured medium can be obtained.

The invention relates to a method for inhibiting back cavitation of a blade of a mixed-flow water turbine. Pressure distribution analysis is carried out for calculation results, the location of the point with the lowest pressure on the back face of the blade can be obtained, that is, the point most prone to cavitation can be obtained, a small hole with the diameter being 0.003D1 is drilled at the point with the lowest pressure on the back face of the blade, the front face and the back face of the blade are connected, and high-pressure water flow on the front face can be compensated into the low-pressure center of the back face due to pressure difference between the front face and the back face, so that the pressure on the back face cannot reach the environmental vapor pressure, and thus the cavitation can be undermined. By adopting the method, when the mixed-flow water turbine operates under all normal conditions in a power station, no cavitation can easily occur to the blades of the water turbine, and the safe and stable operation of the water turbine can be ensured.

The invention belongs to the technical field of construction of hot-dry rock artificial geothermal reservoirs, and particularly relates to a method for building a hot-dry rock artificial geothermal reservoir by using natural geological faults. The method comprises the following steps that 1, the occurrences, the number and the sizes of the faults in a hot-dry rock geothermal development area are determined; 2, a well group is arranged and designed along the trend of the target fault, wherein according to the arrangement way of the well group, shafts are linearly arranged in a one-injection-two-return way; 3, an injection well is drilled in the center of the trend of the target fault; 4, in the combination of the geophysical prospecting imaging technology, the macro-size of a large-fault and the azimuthal angle of a drilling hole are determined, and according to the macro-size and the azimuthal angle, the occurrence of the target fault can be precisely determined; 5, the target fault and near fracture zones are used as the fracture development artificial geothermal reservoir which is high in permeability and large in heat exchange area; 6, a lot of room-temperature water is injectedinto the injection well, heat exchange is conducted through the natural artificial geothermal reservoir crack network of the target fault, transformation from solid heat to liquid heat is achieved, and high-temperature water and over-hot water vapor are produced from production wells to be used for electricity generation or heat supply.

A lens and a method for generating a vortex beam with a convergence effect based on a super surface relate to a technology for generating a vortex beam with a convergence effect. The invention aims to solve the problem that the traditional vortex beam generation method is of low degree of integration and low utilization rate of energy. The lens comprises m*n periodically-distributed phase mutation units. Each phase mutation unit comprises a substrate and a metal layer on the surface of the substrate. The metal layer is composed of two parts, wherein one part is a square metal layer in the center of the substrate, the other part is a rectangular metal frame surrounding the square metal layer, and a pair of sides of the metal frame is provided with gaps in the center. One side of the substrate is taken as an x axis, and the included angle between the connecting line of the center of one gap and the center of the substrate and the positive direction of the x axis is theta (for the expression, please see the description). Circularly-polarized wave comes in vertically, and the transmitted cross-polarized wave is a vortex beam with a convergence effect. The lens of the invention is thin, easy to integrate and high in utilization rate of energy, and is applicable to generation of a vortex beam with a convergence effect.

The invention relates to a preparation method of a flexible double-layer eddy-current sensor adopted for measuring the clearance among curved faces, belonging to the sensor technology field. Firstly, apertures are cut on a polyimide film substrate and then the front and back faces of the polyimide film substrate and the apertures are respectively covered by copper foil; the lithography is carried out on the front copper foil to form eddy-current coils around the apertures and outer leads are formed on one side of each eddy-current coil; the lithography is carried out on the back copper foil to form inner leads among the apertures so as to get the upper-layer eddy-current sensor; the process is repeated to get the lower-layer eddy-current sensor; and the sealing glue is adopted to lead the upper-layer and lower-layer eddy-current sensors to be stuck mutually. The eddy-current sensors prepared by the method have high measuring precision and resolving power under the additive effects of electromagnetic field. The eddy-current coils and the substrate material have better flexibility so as to measure the clearance among curved faces of any form, and can be arranged in the narrow space for measurement.

The invention provides a pressure measurement tail rake for a wing section tunnel test. Two ends of a cross beam are fixed at the top of a support; a plurality of pressure measurement cones are respectively arranged above the cross beam through a rotating shaft; the pressure measurement cones are streamlined bodies of revolution, and after the aerodynamic center of the pressure measurement cones is arranged at the pressure measurement cone support point, the direction of incoming flow can be captured, and the direction angle of the incoming flow can be measured by angular transducers arranged at the bottom of the cross beam and the lower end of the rotating shaft; a total pressure hole is arranged at the head part of each pressure measurement cone, and a static pressure hole is arranged on the upper surface, a certain distance behind the head part of each pressure measurement cone, one end of a pressure measurement pipe is guided into the total pressure hole and the static pressure hole through the rotating shaft, the other end of the pressure measurement pipe is connected with a pressure data acquisition system, and therefore, the pressure measurement pipe can be used for measuring the total pressure of airflow and the pressure of the static pressure hole, the two-dimensional velocity distribution in the cross beam direction can be calculated, and the resistance of a wing section model in front of the tail rake can be calculated further. The pressure measurement tail rake can be used for accurately measuring the total pressure of airflow at the pressure measurement cones, as well as the velocity, drift angles and two velocity components of airflow at the pressure measurement cones, thereby obtaining the resistance and lift force which act on the wing section model.

Provided is a pipe having a grooved inner surface, which has excellent thermal conduction properties, can be made compact and lightweight, and allows resources to be conserved. Also provided are a method and apparatus for producing this pipe having a grooved inner surface, which allow efficient and stable production thereof. The apparatus which is used for producing the pipe having a grooved inner surface is provided with: diameter-reducing means for drawing a base pipe in order to reduce the diameter thereof, and groove-forming means for forming a large number of grooves on the inner surface of the base pipe. If, for example, the angle of twist of a groove with respect to the centre axis of the pipe is beta (DEG) and the apex angle of a fin which is formed between adjacent grooves is alpha (DEG), then beta is between 30 and 60 and alpha is between 5 and 20. If the outer diameter is D (mm), the groove depth is H (mm), and the cross-sectional area with respect to the axial direction of the pipe is Ac (mm<2>), then D is no greater than 6, H is at least 0.07, and Ac is less than 0.8*D.

The invention discloses a gas-liquid two-phase helical flow generating device in a pipeline, which comprises a helical flow generator (2) and an installation pipe section, wherein the helical flow generator (2) comprises a flow guide body (6), a fixed ring (8) and three same blades (14); the whole outer outline of the blades (14) is shaped as a helical propeller blade, the inner sides of the blades are uniformly fixed on the flow guide body (6) at intervals, the outer sides of the blades are fixed on the inner side of the fixed ring (8); an included angle alpha exists between the blades (14) and the cross section of the flow guide body (6); arc flow guide plates (!2) uniformly arranged by using the flow guide body (6) as a center are arranged on the blades (14); and the installation pipe section comprises a pipe housing (3), and the helical flow generator (2) is arranged on the inlet end of the installation pipe section. The gas-liquid two-phase helical flow generating device has the advantages of good helical effect, low fluid state attenuation speed and wide applicable range.

The invention relates to a segment lining grouting system and method based on an outer-embedding-type channel and an expandable bag. The segment lining grouting system comprises a tunnel structure formed by splicing segment lining, wherein a grouting hole serving as a hoisting hole is embedded in the central part of the segment lining, a transverse and longitudinal outer-embedding-type channel isarranged on the outer arc surface of the segment lining, a slurry diffusion main channel is arranged along the segment circumferential direction, a slurry diffusion secondary channel is arranged in the tunnel longitudinal direction, and the slurry diffusion main channel is connected with the grouting hole; and the outer-embedding-type channel adopts a embedded channel which is internally providedwith the bag with high extensibility, and the slurry injected through the grouting hole can only flow within the limited range of the bag. The segment lining grouting system and method have more obvious significance for water-rich and large-particle pebble soil layers, the defect that slurry corresponding to the conventional grouting process is diluted or lost to surrounding loose stratum by underground water under the condition of stratum overbreak or disturbance can be effectively overcome, the effective filling of the three-dimensional annular space of a shield tail gap is realized, the effective contact between a tunnel and the surrounding stratum is ensured, and the stability of the tunnel structure and the safety of the surrounding environment are realized.

The invention discloses a high-sound-absorption-rate communicated multi-cavity resonance type sound-absorbing cover layer comprising a matching layer and an air-cavity-included elastic damping layer connected with the matching layer. A plurality of communicated multi-cavity units are formed in the air-cavity-included elastic damping layer; left / right arcs rotate around the central axes of the communicated multi-cavity units to form the communicated multi-cavity units, wherein the central axes of the communicated multi-cavity units are parallel with the thickness direction of the air-cavity-included elastic damping layer; and the left / right arcs are sinusoidal-like curves and all peak points of the left / right arcs change in a gradient manner. Therefore, the acoustic performance of the traditional cavity resonance type sound absorbing cover layer is improved substantially; with the communicated multi-cavity structure, the surface of the high-sound-absorption-rate communicated multi-cavity resonance type sound-absorbing cover layer matches the water impedance perfectly; and thus the acoustic wave energy entering the water-acoustic overlay interface can be absorbed to the greatest extent and the reflection is minimized.

The invention relates to an inclined gradually varied porous end surface non-contact type mechanical sealing structure, which comprises a movable ring and a static ring adopting mechanical sealing, wherein one sides of the end surfaces of the movable ring and the static ring are high-pressure sides (the upstream parts), the other sides of the end surfaces of the movable ring and the static ring are low-pressure sides (the downstream parts), inclined gradually varied holes in symmetric distribution along a rotating center are formed in the end surface of at least one sealing ring in the movable ring or the static ring, and a gradually varied hole annular belt is formed; queues of the gradually varied holes are ranged into an inclined straight line forming an inclined angle with the diameter of the end surface, and the inclined angle of each queue is identical; the gradually varied holes in the queues are gradually decreased from the high-pressure sides (the upstream parts) to the low-pressure sides (the downstream parts); the sizes of the gradually varied holes with the same radius are identical; and annular sealing dams with smooth planes are arranged at the upstream part and the downstream part of the end surface of the sealing ring. The inclined gradually varied porous end surface non-contact type mechanical sealing structure has the advantages that the abrasion resistance and the lubricating capacity are better, the opening performance and the anti-interference capability are higher, the leakage rate is smaller, and the mechanical sealing structure can be suitable for sealing various kinds of gas and liquid.

The invention discloses a radial power flattening reactor core with square grid arrangement driven by an external source. The reactor core comprises, from core to outward, in a radial direction, an external neutron source region, a first fission fuel region with a low concentration, a second fission fuel region with a medium concentration, a third fission fuel region with a high concentration, a fourth fission fuel region with a higher concentration, a reflection region and a shielding region in turns. Based on the physical and thermohydraulic principle of coupled reactors, the arrangement of the reactor core with the square arrangement is subjected to a principle design analysis by adopting mathematic methods. Based on the design principle, the fuel regions are in a unique radial geometric layer arrangement with increasing concentrations from the interior to the exterior, the design principle of the each fuel region from a low concentration to a high concentration, an unique radial geometry layers arrangement is carried out from interior to exterior, and the radial power distributions of the fuel regions are flattened. The core has a good flattened radial power, high utilization rate of neutron, and simple structure arrangement has effect of effectively reducing the power peak factor caused by an external neutron source, and has high burnup and high generating efficiency.

The invention relates to a method for manufacturing a thin-layer multi-turn-surface evaporator. According to the method, conical evaporation surfaces are adopted, materials are uniformly distributed on the upper conical evaporation surface, and liquid flows downwards along the conical surface under the action of gravity, turns to enter the lower conical evaporation surface when flowing to the position close to the inner wall surface of the evaporator, flows downwards along the conical surface under the action of gravity, and turns to enter the next set of evaporation surfaces after flowing to a center distribution pipe and being gathered and redistributed; the process is repeated in this way till concentrated liquid at the kettle bottom is drained.

A flow field observing device for an oil cavity comprises the oil cavity, a loop system and a PIV (particle image velocimetry) system. The oil cavity comprises a base boss, an annular side wall and a carrier. The base boss is fixed on a base through bolts, and both the base boss and the base are provided with through holes with pipes embedded to be as inlet pipes of the oil cavity. The annular side wall is sleeved on the periphery of the base boss, a support platform, a spindle and the carrier are sequentially arranged above the annular side wall from top to bottom, the support platform is fixed on the base through the bolts, and the spindle and the support platform are connected through bearings and bearing end caps. The spindle is externally connected with a motor, the spindle and the carrier are fixedly connected, and the carrier and the annular side wall do not contact to form a gap. The loop system comprises a high-level water tank, a low-level water tank, a water pump, a valve and a water tank. The PIV system comprises a laser, a CCD (charge coupled device) camera, a synchronous controller and a computer. The flow field observing device is simple and convenient, results are accurate and reliable, variations of the flow field structure in the oil cavity under different conditions can be researched, all results are rich, and various states of the flow field can be observed.

The invention provides an adjustable wedge roughness element combined system capable of acquiring incoming wind for an experiment. The system comprises flat plates which can rotate around a central shaft, wherein a wind tunnel is divided into a plurality of layers through the flat plates; each layer is uniformly provided with wedges with the same shape; the area and size of the wedges which are positioned from top to bottom decrease. The system is characterized in that the whole flow field of the air tunnel is divided into a plurality of partial flow fields through separating plates; a rotating angle of each flat plate at each layer, the quantity of the flat plates, and the size, spacing and shape of the wedge at the tail end of the flat plate at each layer can be adjusted to achieve quantitation control of the partial flow fields; when in the quantitation control of the partial flow fields, the rotating angles of the flat plates, and the shape and the size of the wedges are changed to adjust the average wind profile of a boundary layer, so that the turbulence intensity can be reduced as height increases; meanwhile, the defect that the turbulence intensity is reduced excessively fast as the height increases can be improved, and as a result, the local flow fields intercoordinate to enable the flow field quality to meet the experiment requirement.

The present invention relates to a method and apparatus of protecting magnetically sensitive devices with a shield, including: a non-superconducting metal or lower transition temperature (Tc) material compared to a higher transition temperature material, disposed in a magnetic field; means for creating a spatially varying order parameter's |Ψ(r, T)|2 in a non-superconducting metal or a lower transition temperature material; wherein a spatially varying order parameter is created by a proximity effect, such that the non-superconducting metal or the lower transition temperature material becomes superconductive as a temperature is lowered, creating a flux-free Meissner state at a center thereof, in order to sweep magnetic flux lines to the periphery.

The invention provides a three-dimensional space homing method for the speed in two-dimensional seismic data. The method includes the following steps: calculating a layer speed control point of a given layer according to stacking speed on a horizontal stacked section of the two-dimensional seismic data; conducting interpolation, surface fitting and blocking disposing on the layer data on the horizontal stacked section to build a three-dimensional geological model of the layer with a fault; utilizing a ground common midpoint that the layer speed control point of the given layer corresponds to as a stimulating point, adopting a self-stimulating self-receiving ray tracking algorithm to calculate a self-stimulating self-receiving ray reflection point on the given layer of the ground common midpoint and a homing point for the reflection point as the layer speed control point of the given layer; offsetting the layer speed of the given layer to the homing point of the layer speed control point of the given level to finish three-dimensional space homing of the layer speed control point of the given layer. By means of the method, the layer speed position can be found more accurately, and the method provides accurate initial speed for follow-up use of the speed.

The invention relates to a self-adjusting rotor used for conveying blood or conveying shear sensitive fluid. The rotor rotates in a pump body so that the pressure of the fluid is increased and the fluid flows out along the circumferential direction relative to the flowing direction of a medium, the flowing direction comprises an incident flow face (3) and a back flow face (4), and an upper end face and a lower end face of the rotor are an upper oblique plane and a lower oblique plane; if the rotor is cut along a central axis, an included angle formed by an intersecting line of the upper oblique plane and a section and a rotary horizontal plane is an upper top angle beta, and the beta is more than 0 degree; an included angle formed by an intersecting line of the lower oblique plane and thesection and the rotary horizontal plane is a lower bottom angle alpha, and the alpha is more than or equal to 0 degree; the number of the rotors is even, and the rotors are symmetrically distributed along a rotating shaft; and rotor clearances are formed between the upper end face and the lower end face of the rotor and the pump body, the rotor clearances are the distances from each point on the upper end face and the lower end face to the inner surface of the corresponding pump body, and the rotor clearances from the incident flow face to the back flow face are reduced progressively. The self-adjusting rotor has extremely high self-balancing and self-adjusting properties. When the self-adjusting rotor is applied to an artificial heart, the rotor can reduce the damage to blood corpuscles,improve the compatibility with the blood, and lower the manufacturing cost.

Loading device (10) for densification via chemical infiltration in steam phase in directed flow, in a reaction chamber of an infiltration oven, of three-dimensional porous substrates (20) extending primarily in a longitudinal direction, said device comprising an annular loading level (11) formed by first and second annular vertical units (110, 111) distributed concentrically in relation to one another and delimiting between one another annular loading area (13) for the porous substrates to be densified. First and second plates (112, 113) respectively cover the lower element and the upper element of the annular loading area (13). The first and second annular vertical units (110, 111) each comprise supporting members (1100, 1110) distributed in the annular loading area (13) in such a manner as to define between them unit loading cells (14), each unit loading cell being intended for receiving a substrate to be densified. The device additionally comprises gas supply orifices (1102) and gas evacuation orifices (1112) in the vicinity of each unit loading cell (14).

The invention discloses a light stream vortex array based material distributed control platform and a control method. An optothermal heat source on the surface of a microfluid is excited to produce Marangoni convection, the Marangoni convection comprises four vortexes, each vortex rotates in a certain direction, and the speed at the center is the lowest. The center of each vortex provides a stable potential barrier used for capturing a material. Once the material is captured to the center of the vortex, the rotation flow direction of the vortex provides a torque to drive the material to rotate (clockwise or anticlockwise). The vortex array moves along with the movement of micro-nano waveguide in a chip, so that a target is controlled to move directionally in the microfluid. On the basis that particles are captured and rotated through the vortex, the various particles, biological cells and the like, which are originally scattered in the microfluid and are not mutually contacted, are captured in the same vortex through attraction, the rotation of the various materials in the vortex promotes the mutual actions of the materials, so that the materials are induced to achieve the functions of automated assembly, etc.

The invention discloses equipment for measuring diffusion of metal melts based on a thin-layer diffusion model and application of the equipment. The equipment is characterized in that a frame is arranged in a vacuum chamber, and a diffusion table made of graphite is fixedly arranged in the frame; the diffusion table is a vertically fixed cylindrical body, and a heating device composed of tungsten sticks is arranged on the periphery of the diffusion table; the diffusion table is a component which comprises a fixing base, a plurality of layers of graphite sheets with consistent thickness, a stainless steel stick and a C-shaped frame; a first sample cylinder chamber and a second sample cylinder chamber are respectively formed in the diffusion table, the first sample cylinder chamber is positioned in the center of the diffusion table, and the second sample cylinder chamber is positioned below the left side of the first sample cylinder chamber; the diffusion table has a preheating status bit, a welding status bit and a cooling status bit. The equipment realizes precision measurement of diffusion coefficients of the metal melts based on the thin-layer diffusion model and provides a reliable basis for relative metal research and casting.