59 results about "Planar flow" patented technology

A flow display method enabling the state of flows in a plane to be grasped together with inflow into and outflow from that plane. A Doppler method, for example, is used to obtain a velocity profile at each point in a planar area (100) of interest defined in a three-dimensional flow. A flow rate profile in the planar area (100) is found on the basis of the thus obtained velocity profile. From the flow rate profile and the velocity profile there are determined source points (12) representative of inflow into the planar area (100) and sink points (14) representative of outflow therefrom. Contour lines in the flow rate profile then join the source points (12) and the sink points (14) to obtain a display of planar streamlines (10).

The invention relates to an energy-saving peeling air knife based on a wall attachment effect for planar-flow melt spinning. The peeling air knife disclosed by the invention enables the consumption of compressed air to be low, the flow of peripheral air which is several times or several tens of times of the compressed air can be guided on an outer convex arc surface on the basis of the wall attachment effect, and an air pressure is lowered to be less than 0.2MPa from a compressed air pressure of 0.4MPa of a traditional air knife, an air curtain has a high impact force, and is thin and uniform, and a low divergence degree and a low noise are achieved; only a height of the peeling air knife needs to be accurately adjusted in an arc guide groove, and an angle has no need to be adjusted, thus an air blowing direction can be ensured to strictly follow the tangential direction of the excircle of a cooling roll; the peeling air knife can be precisely machined only through two-time wire cutting feeding in spite of a complex geometric structure, a lifting mechanism and a rotation mechanism can be omitted, a low cost is achieved, and maintenance is avoided; and a column of peeling points (lines) of a thin belt in a width direction is almost parallel to the generatrix of the roll surface of the cooling roll, a shear stress in the thin belt is minimized, a belt material is prevented from cracks and edge burrs, the soft magnetic properties of the thin belt cannot be deteriorated, and online winding is benefited.

In a method for hydrodynamic focusing of a laminar and planar sample fluid flow, a system is provided for analysis and/or sorting of microscopic objects in the sample fluid comprising an optical objective for optical inspection of the microscopic objects. Microscopic objects are conveyed in the laminar flow of the sample fluid, and two laminar and planar flow of sheath fluids are provided. The flow of the sample fluid is hydrodynamically focused at an optical inspection zone of the system by the sheath fluids. Focusing of the flow of the sample fluid is controlled such that all of the microscopic objects in the sample fluid are caused to be conveyed in a common flow direction in one single plane at the inspection zone of the system, and the microscopic objects in the fluid are optically inspected through the optical objective.

The present invention is directed to a planar flow field design having an intake manifold and an exhaust manifold which are configured in two offset planes. A relatively short passage extends from the intake manifold through the exhaust manifold and terminates at a reactive face of a membrane electrode assembly (MEA) such that a differential flow distribution is provided from the intake manifold through the passage and across a reactive face of the MEA to the exhaust manifold.

The invention relates to a hydrophilic polyfluortetraethylene microporous membrane folding type filter element which comprises a filtering medium layer, an inner supporting barrel and an outer supporting barrel, wherein the filtering medium layer is folded into fins and then wound on the outer circumference of the inner supporting barrel, the folding line of the filtering medium layer is parallel to the axial direction of the inner supporting barrel, the outer supporting barrel is sleeved at the outer side of a barrel formed by the filtering medium layer, the filtering medium layer is formed by overlapping a layer of long-fiber nonwoven fabric, a layer of thin short-fiber nonwoven fabric, a layer of hydrophilic polyfluortetraethylene microporous filter membrane and a layer of planar flow guide net, wherein the thin short-fiber nonwoven fabric is arranged at the upstream of the filter membrane, the long-fiber nonwoven fabric is arranged at the upstream of the thin short-fiber nonwoven fabric, the planar flow guide net is arranged at the downstream of the filter membrane, and the radial end surfaces of the two arbitrary adjacent fins are respectively in welding connection. The short-fiber nonwoven fabric plays the roles of prefiltering and protecting the filter membrane, and the dirt holding capacity of the filter element is increased; the long-fiber nonwoven fabric enhances the spalling resistance of the folding layer; and the planar flow guide net reduces the fluid resistance, improves the flow of the filter element and also overcomes the problem that the fiber falls off.

A flow distribution system for a multi-phase fluid stream includes an inlet for receiving a multi-phase fluid stream from an inlet pipe, a plurality of outlets each for delivering a portion of the multi-phase fluid stream to a respective outlet pipe, and a hollow housing forming an inner chamber in fluid communication with the inlet and the plurality of outlets, where the housing has a central longitudinal axis. The inner chamber includes a first chamber portion adjacent to the inlet and a second chamber portion adjacent to the plurality of outlets, and the first chamber portion has a cross-sectional area that is less than the cross-sectional area of the second chamber portion. A non-planar flow diverter is positioned within the chamber.

The invention relates to a rectifying device of a horizontal oil-gas-water triphase separator, which mainly comprises a separator body and is characterized in that the rectifying device adopts a semicircular structure formed by splicing n ( n is larger than or equal to 1) splicing type pore plates; openings are not formed at the two ends of the spliced semicircular structure, and small holes are densely formed at the middle position between the two ends; and the rectifying device and a separator cavity are connected in a way that each pore plate body of the rectifying device is fixedly connected with a corresponding part of a ring-shaped fixing part on the separator cavity, and after the connection, a semicircular cavity is formed between the upper end part of the rectifying device and a connecting part. With the rectifying device adopting the structure, the complex three-dimension flow at the front of the pore plates can be effectively rectified to the relatively uniform two-dimension planar flow, the flow behavior of the equipment can be remarkably improved, and phenomena of back flow and back mixing can be basically eliminated.

An element of an averaging orifice plate fluid flow meter for measuring the volumetric rate of fluid flow in a conduit having an interior circumference for carrying a flow of fluid comprising, a planar flow impedance plate for disposition transversely across the interior of the conduit and perpendicular to the fluid flow, a plurality of spaced apart orifices disposed in the plate where the profile of each orifice is a segment of a circle on an arc where the arc is coincident with a portion of the interior circumference of the conduit.

The invention relates to a domestic appliance 1 having a first heat exchanger 4 and a second heat exchanger 6, which are arranged one behind the other at a distance from each other in an air flow channel 3 with respect to the flow direction of said air flow channel, and a cleaning apparatus 5 for cleaning the first heat exchanger 4 by means of cleaning liquid W, wherein a flow-guiding structure 13is present in the air flow channel 3 between the first heat exchanger 4 and the second heat exchanger 6, which flow-guiding structure has at least one planar flow-guiding element 14, which is oriented at least approximately horizontally between the first heat exchanger 4 and the second heat exchanger 6, wherein the at least one flow-guiding element 14 is arranged above a bottom 16 of the flow-guiding structure 13. The invention can be applied particularly advantageously to clothes-drying appliances, in particular recirculating-air clothes-drying appliances. The invention can be applied particularly advantageously to domestic appliances having a heat pump.

The invention belongs to the field of bioengineering technology. Based on the common problems in the field of rapid antibody detection at home and abroad, such as poor antigen water solubility, weak detection signal, low sensitivity, and poor specificity, the invention proposes to directly use the overall fusion protein carrying a fusion label to detect the analyte Rapid detection of planar flow type. 1. The main points of the present invention are: constructing the recombinant gene of the fusion protein; expressing and purifying the recombinant fusion protein; preparing detection reagents and capture reagents with the recombinant fusion protein. 2. The present invention shows that the fusion protein has the advantages of good water solubility, easy purification, natural configuration, high activity, and high labeling efficiency, and the rapid detection reagent made from it has high sensitivity and specificity. 3. The rapid detection reagent constructed according to the present invention can detect one or two analytes simultaneously. 4. The present invention has broad application prospects in the field of application and basic research such as disease diagnosis, epidemiological survey, medical identification, new drug development, agriculture, animal husbandry and veterinary medicine.

The invention provides an adjusting and controlling design method for a water-drive oil reservoir planar flow field. The adjusting and controlling design method comprises the steps that 1, oil-water boundary flow field analyzing is conducted, and distributing of a pressure field and a velocity field of single-phase flow under the conditions that a well network is fixed and the amount of injectionproduction is stable is calculated; 2, an oil-water boundary and a production well near well flow boundary are discretized, and the ideal velocity vector and the actual velocity vector for obtaining the discrete position are calculated; 3, an evaluation coefficient is obtained, and the differences between the ideal velocities of a boundary flow field and a single well flow and the actual velocities are calculated correspondingly; 4, whether the adjusted evaluation coefficient meets the expected value or not is judged, and when the evaluation coefficient meets the expected value, the procedureenters into the step 5; and 5, the optimal well network and injection production adjusting and controlling design scheme is obtained according to the result of the evaluation coefficient. According tothe adjusting and controlling design method for the water-drive oil reservoir planar flow field, whether a current flow field meets needs of distributing of an oil reservoir or single-well oil and water or not can be evaluated quickly and quantificationally, and a basis is provided for formulating a reasonable flow field adjusting and controlling strategy.

The invention discloses a horizontal well fracturing method for promoting fracture height extension through two times of acid injection and inter-cluster temporary plugging. The horizontal well fracturing method comprises the following steps that planar flow-limiting perforation operation is conducted; variable-displacement acid pretreatment operation is conducted; a main fracture is built by adopting a high-viscosity glue solution, and the fracture is expanded by adopting low-viscosity slickwater; fracturing fluid carrying calcium carbonate particles is injected; fracturing fluid carrying theacid-resistant hollow temporary plugging ball is injected; low-viscosity slickwater is injected; acid liquor is injected to dissolve the calcium carbonate particles; the fracturing fluid is continuously injected; displacement operation is conducted; a bridge plug is lowered; and the steps are repeated until all sections are constructed, and plug drilling, flowback, testing and production solvingafter fracturing are conducted. According to the horizontal well fracturing method, planar flow-limiting perforation, calcium carbonate particle temporary plugging and acid-resistant hollow temporaryplugging ball temporary plugging processes are adopted, the single-cluster displacement is increased, the extension length of fractures in the height direction is effectively increased, uniform fracture initiation and extension of multiple clusters of fractures are promoted, finally, the longitudinal use degree of a shale gas reservoir is finally increased, the reservoir transformation size is increased, and finally, the efficient development of the shale gas reservoir is realized.

A drill bit for drilling a bore, the drill bit comprising: an outer housing; a primary cutting structure defining a cutting plane of a first diameter; a flow path arranged to let drilling fluid flow through the drill bit; and a deployable blade assembly at least partially located within the outer housing, the deployable blade assembly comprising a cutting structure and being arranged to be axially movable from a first position, in which the deployable cutting structure is recessed with respect to the primary cutting structure, towards the cutting plane, to a second position; wherein when the deployable blade assembly is in the second position, the deployable cutting structure defines a cutting diameter which is less than or equal to the first diameter.

The invention discloses a flow uniformizing piece, a process chamber, atomic layer deposition equipment and a deposition method. The flow uniformizing piece comprises a plurality of first flow uniformizing holes and second flow uniformizing holes which are formed at intervals, and air outlets of the first flow uniformizing holes and air outlets of the second flow uniformizing holes are located indifferent planes. Compared with the structure of a traditional flow uniformizing piece, the flow uniformizing piece of the invention has the advantage that unexpected reaction caused by mixing a firstprecursor and a second precursor on the surface of a planar flow uniformizing piece can be effectively reduced. Even if a small amount of the first precursor is adsorbed on the surface of the flow uniformizing piece, the possibility of unexpected reaction is reduced due to the fact that the first precursor and the second precursor are not on the same plane such that the thickness uniformity of afilm and the process repeatability can be effectively improved, the particle level in a cavity body can be effectively improved, and the quality and the performance of the film are improved.

The invention relates to an amorphous nanocrystalline alloy strip and a preparation method thereof. The amorphous nanocrystalline alloy strip is manufactured by adopting a plane flow technology, the surface temperature of the outer circumference of a cooling roller is controlled to be 70-150 DEG C in the preparation process, and the stripping temperature range of the strip when the strip is stripped from the surface of the cooling roller is controlled to be 120-200 DEG C. According to the amorphous nanocrystalline alloy strip prepared through the method, the toughness value is not larger than 3.0 in the areas, accounting for 30% of the wide band, of the two sides of the wide band; and the toughness value in other areas is not greater than 1.5. The broadband is longitudinally cut into narrow strips with the width of 10 mm, and the relative deviation of the specific total loss of the narrow strips is not larger than +/-15%. According to the preparation technology, the toughness and the magnetic performance of the strip can be guaranteed, and especially the transverse toughness and the magnetic performance are consistent; the device can ensure that the strip cannot be broken due to shrinkage stress in the manufacturing process, ensure that the coiling process is not interrupted, and also ensure that the strip cannot be broken in the subsequent processing process.

The invention discloses a production process for a reactive powder concrete sleeper structural member. The production process specifically comprises the following steps of inspection, assembly, tensioning, mixing, distribution, vibration, steam curing, releasing, form removal and the like. The production process adopts a planar assembly line operation method, has the advantages of easiness in implementation, simplicity and convenience in operation, high production efficiency and the like and solves the process bottleneck restricting large-scale industrial production of reactive powder concreteproducts, and is suitable for production of various reactive powder concrete products, especially for production of reactive powder concrete sleeper structural members adopting prestress structural design.

The invention relates to a three-dimensional ocean current Lagrange coherent structure analysis algorithm and provides a flow field omnibearing analysis method. Different from planar flow field structure analysis in the prior art, the three-dimensional ocean current Lagrange coherent structure analysis algorithm can more comprehensively and objectively present the flow field structure. For most ocean flows in the sea, principal axes with fastest speeds are below the sea level, sea surface results are taken as main flow field characteristics in the prior art, and the results are not accurate. The three-dimensional ocean current Lagrange coherent structure analysis algorithm utilizes a three-dimensional curved surface to express the flow field structure, and more comprehensive and accurate results can be realized.