61 results about "Planar flow" patented technology

A pressure activated valve for medical applications comprises a housing having a lumen extending therethrough from a proximal end to a distal end thereof and a flow control membrane extending across the lumen to control flow therethrough, the flow control membrane including a mounting portion at which the flow control membrane is coupled to the housing and a lumen occluding portion having a slit extending therethrough so that, when the lumen occluding portion is subjected to a pressure of at least a predetermined threshold level, the lumen occluding portion moves from a closed configuration in which flow through the lumen is prevented to an open configuration in which flow is permitted and wherein a thickness of the mounting portion is greater than a thickness of the lumen occluding portion. A method of forming a membrane for a pressure activated valve, comprises the steps of forming a substantially planar flow control membrane dimensioned to fit in a housing of the pressure activated valve, wherein a mounting portion of the flow control membrane is adapted to engage the housing, and forming at least one slit in the flow control membrane, the slit being openable by pressure of a fluid in the pressure activated valve of at least a predetermined threshold level in combination with the steps of forming an annular base membrane dimensioned to substantially overlie the mounting portion of the flow control membrane and stacking the base membrane on the mounting portion of the flow control membrane.

A process flow device that includes a self-averaging orifice plate type of primary flow element for measuring, by a differential pressure process, the volumetric rate of fluid flow at a point in a fluid carrying conduit where the velocity profile of the fluid is asymmetric with respect to the longitudinal axis of the conduit. The improved flow element comprises a planar flow-impeding plate disposed transversely across the interior of the conduit and perpendicular to the longitudinal axis thereof. The plate includes at least three circular apertures eccentrically disposed with respect to the longitudinal axis of the conduit to create static pressure averaging on the downstream side of the plate. Upstream and downstream static pressure sensing ports are respectively provided on opposite sides of the flow impeding plate.

The invention relates to a Fe-based amorphous alloy. The percentage content of Fe atoms in the Fe-based amorphous alloy ranges from 81.8 to 84.3, and the Fe-based amorphous alloy has a saturation magnetic induction intensity being larger than or equal to 1.61 T, and / or a coercive force being less than or equal to 5 A / m. The formula of the Fe-based amorphous alloy is FeSiB<c>P<d>C<e>M<f>, wherein M is one or more inevitable impurity elements in the raw materials; a, b, c, d, e and f respectively represent the atom percentage contents of all the corresponding components; and the sum of a, b, c, d, e and f is 100. The Fe-based amorphous alloy has the advantages of high saturation magnetic induction intensity and other good magnetic properties on the premise of meeting the requirement of strong amorphous forming ability for preparation of wide-width strips through planar flow casting and rapid quenching. The maximal thickness of an alloy wide-width strip sample reaches 81 [mu]m. In addition, the alloy does not contain nonmagnetic metallic elements, is suitable for being produced by industrial-purity raw materials, is simple in preparation method, and has the advantage of low manufacturing cost. The alloy strip sample has very good ductility before and after heat treatment, and can be folded by 180 degrees without fracture when reaching the optimal magnetic property.

An economical and compact air handler specially configured for use in agricultural applications is provided. The agricultural air handler includes a shroud formed to surround a rotating shaft having a propeller attached to each end of the shaft. The propellers draw air through an air inlet located proximate the top of the shroud. Each propeller blows the air out of an end of the shroud. A shaft drive rotates the shaft. The shaft drive can be powered by a source outside the shroud, or a source contained within the shroud. The power source can include a hydraulic pump driven by the power take-off of a tractor. An air stream is blown from the shroud. The air stream is directed in an approximately vertically planar flow pattern to remove water ponded within the stem cup of a agricultural crop, such as cherries. The air handler can be used as a freeze protecting heat exchanger or for the application of liquid or dust formulations of agri-chemicals. The agricultural air handling device can also be utilized for atmosphere modification of an enclosed area containing a crop or orchard.

The method discloses a horizontal well transient pressure rapid calculation model establishing method capable of improving the near-wellbore pressure drop. The method comprises steps as follows: S1, calculating the Laplace space solution of a horizontal well under the infinite oil reservoir and uniform flow rate distribution condition; S2 decomposing the Laplace space solution of the horizontal well under the infinite oil reservoir and uniform flow rate distribution condition into a planar flow part of a stratum and a mirror superposition part of a top and bottom closed boundary effect; S3, calculating the near-wellbore flow pressure drop of the horizontal well; S4, replacing the mirror superposition part of the top and bottom closed boundary effect in the Laplace space solution of the horizontal well under the infinite oil reservoir and uniform flow rate distribution condition with the near-wellbore flow pressure drop of the horizontal well to obtain a shaft pressure calculation model of the horizontal well. The pressure drop response composition of the horizontal well is decomposed, the near-wellbore flow pressure drop of the horizontal well is reasonably described by using a near-wellbore radial flow mechanism, and effects of vertical permeability, shaft position, positive and negative skins and shaft radius are reflected truly.

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.

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.

A flow distribution system for a multi-phase fluid stream is described. The system comprises: 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, the housing having a central longitudinal axis. The inner chamber has 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 so as to define a flow channel of varying cross-sectional area as measured in a plane orthogonal to the central longitudinal axis of the housing, for varying the flow rate of the multi-phase fluid stream as it passes through the flow channel whereby turbulent mixing of the multi-phase fluid stream in the inner chamber is encouraged.

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 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.

A conformal filter is disclosed having a plurality of sorbent beds oriented perpendicular to an inner side surface of the filter which conforms to an adjacent surface, such as a wearer's face when attached to a respirator. The inner side of the filter may approximate the curved shape of an interfacing surface. Because the sorbent beds are oriented perpendicular to the inner side surface, a conformal configuration can be achieved without bending the sorbent beds and while keeping constant bed residence time throughout the entire cross-sectional area of the air flow, thus enforcing even air distribution. Reduced bed depth is also achieved through this configuration which consequently reduces the overall pressure drop through the filter. Other embodiments are described and claimed.

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.

An apparatus for disinfecting fluids comprises a thin flow channel 12 which extends between a pair of parallel discs 16,18. The fluid to be treated flows radially of the discs 16,18 through the flow channel 12 where it is irradiated axially of the discs by ultra-violet light emitted by one or more lamps 14. At least one of the discs 16,18 is rotated to cause relative movement therebetween. The relative rotation of the discs 16,18 creates a turbulent flow of fluid within the flow channel 12 to ensure that the fluid circulates and swirls close to the opposed surfaces of the discs, thereby ensuring that all parts of the fluid are exposed to an intense dose of ultra-violet radiation. The thin planar flow channel 12 enables a relatively large volume of fluid to be efficiently disinfected since the ultra-violet radiation can pass axially of the discs 16,18 through the thin fluid layer over the large surface area of the discs 16,18 without suffering from significant UV absorption.

The invention discloses a slide-plate-method slag-stopping tapping slide plate brick for a converter. The slide-plate-method slag-stopping tapping slide plate brick comprises an inner nozzle brick, anouter nozzle brick, an inner slide plate brick and an outer slide plate brick, wherein the upper end and the lower end of the inner nozzle brick are both provided with first tenons; the upper end ofthe outer nozzle brick is provided with a second tenon; the structures of the inner slide plate brick and the outer slide plate brick are coincident; the inner slide plate brick and the outer slide plate brick both comprise slide plate brick bodies and blind mortises; the slide plate brick bodies are octagons; certain end surfaces of the slide plate brick bodies are provided with the blind mortises; the other end surfaces of the slide plate brick bodies are planes; a steel flowing hole is formed in the upper end surface of the inner nozzle brick; the steel flowing hole penetrates into the lower end surface of the outer nozzle brick. The slide-plate-method slag-stopping tapping slide plate brick, compared with a current conventional sliding plate brick, is greatly prolonged in service life;as the service life of the slide plate brick is prolonged, the replacement frequency is decreased in a use process; further, the work efficiency of the converter is improved and the slide-plate-method slag-stopping tapping slide plate brick has a wide industrial application prospect.

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.

A planar flow reactor includes a straight planar process channel, a flow generator, and a plurality of static mixing elements disposed within the process channel. The flow generator is configured to generate a pulsatile flow within the process channel, and the static mixing elements are configured to locally split and recombine the flow. The straight planar process channel enables the generation of a flow pattern that is largely independent of the width of the process channel, meaning that the throughput may be increased by increasing the width without significantly affecting the residence time distribution or the flow behavior. Furthermore, by creating a pulsatile flow within the process channel, turbulence and / or chaotic fluid flows may be generated even at low net flow rates, i.e. low net Reynolds numbers.

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.

A packing has a plurality of sheet materials spaced and arranged in parallel, and liquid flows along the flat surface thereof in a standing use state. Each sheet material has at least one member group including a plurality of support members arranged such that the upper end of the uppermost support member corresponds to the upper end of the sheet material and the lower end of the lowermost support member corresponds to the lower end of the sheet material. Each support member has a pair of support walls parallel to the liquid flow direction and perpendicular to the sheet material surface, and a bridging part connecting the support walls. A sandwiching structure is formed that one sheet material is held by at least one support member attached thereto and at least one support member attached to an adjacent sheet material, and it extends linearly through the plurality of sheet materials.

The invention discloses a preliminary gas distributor for a fluidized bed reactor. The upper half part of the preliminary gas distributor is in a cylindrical structure, and the lower half part of the preliminary gas distributor is in a tapered structure; the cylindrical structure is provided with a gas inlet; and the gas inlet is arranged in the middle of the cylindrical structure and is arranged along the tangential direction of the side wall of the cylindrical structure. According to the preliminary gas distributor for the fluidized bed reactor disclosed by the invention, the gas inlet is arranged along the tangential direction of the preliminary gas distributor, and when gas is input, a spiral-flow-type planar flow field is formed below a distribution plate, so that the flow field of the gas is changed, the entrance effect of fluid is alleviated, the gas cannot directly impact the distribution plate to cause uneven distribution of gas flow, and the uniformity and stability of gas flow distribution in the fluidized bed can be improved. The preliminary gas distributor does not need a guide plate and is simple in structure and convenient for processing.

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.