51 results about "Porous flow" patented technology

The invention discloses a drying device and method for reducing the loss of active ingredients of American ginseng, and relates to the technical field of drying equipment, the drying device comprises a drying box body, the drying box body is provided with a tray support and an air supply flow equalizing cavity, and the tray support is provided with a tray and a porous flow equalizing plate; the flow guide cover plate is positioned at the upper part in the drying box body; the air supply unit is provided with a centrifugal fan and a circulating air pipeline; the heat pump unit is provided with a heat release side and a heat absorption side; and the atomizing unit is provided with a water storage tank and an atomizer. The drying uniformity is improved, local overheating or insufficient drying is effectively prevented, the problem that the upper layer and the lower layer are dried unevenly due to improper airflow distribution of traditional equipment is solved, active ingredient degradation caused by too high local temperature is avoided, the relative humidity of the drying environment is accurately controlled through atomization humidification in the speed reduction drying period, and the drying efficiency is improved. Hardening and crusting of the surface of the American ginseng due to too fast water loss are prevented, mild drying at a relatively low temperature is realized, and components such as heat-sensitive ginsenoside are protected.

The invention discloses a heat exchange system for achieving overall heat transfer enhancement in a strong wind environment based on porous flow guide. The heat exchange system comprises an air heat exchange device and a porous flow guide plate. The air heat exchange device comprises a ventilation device and an air heat exchanger; the porous guide plate is arranged on the outer side of the air inlet face and is of a plate type structure with porosity partition design, and the total porosity eta is larger than or equal to 0 and smaller than or equal to 70%. The porous flow guide plate can conduct blocking flow guide optimization on the windward side air flow field of the porous flow guide plate, the air flow speed is reduced, and therefore the vertical air inlet amount of the air heat exchange device in the windward side area of the porous flow guide plate is increased. Air jet is formed through the ventilation jet holes of the porous guide plate, transverse vortex on the leeward side of the guide plate is eliminated, the air inlet resistance of the air heat exchange device in the leeward side area of the porous guide plate is reduced, the air inlet amount is increased, and therefore the air inlet uniformity and heat transfer efficiency of the air heat exchange device are integrally improved. And integral heat transfer enhancement of the heat exchange system in a strong wind environment is realized.

The utility model discloses a kind of based on porous flow guide realizes the heat exchange system of overall heat transfer intensification in high wind environment, including air heat exchange device and porous flow guide plate;Air heat exchange device includes ventilator and air heat exchanger;Porous flow guide plate is arranged in the outer side of air inlet face, and it is the plate type structure of porosity partition design, and its total porosity satisfies 0≤η≤70%.Porous flow guide plate can block and guide flow optimization to its windward side air flow field, reduce air flow velocity, to increase the vertical air intake of air heat exchange device in the windward side area of porous flow guide plate;Air jet is formed through the ventilation jet hole of porous flow guide plate, eliminate the transverse vortex of the leeward side of flow guide plate, reduce the air intake resistance of air heat exchange device in the leeward side area of porous flow guide plate, increase air intake, to improve the air intake uniformity and heat transfer efficiency of air heat exchange device as a whole, realize the overall heat transfer intensification of heat exchange system under high wind environment.

Disclosed are flow-through electrode devices and techniques for making flow-through electrodes. In one aspect, a flow through electrode apparatus comprises one or more fiber layers. Each fiber layer comprises a plurality of fibers oriented to be orthogonal to a flow direction of a fluid. The plurality of fibers are configured to cause an inertial flow of the fluid around the plurality of fibers at a first flow rate of the fluid.

The invention belongs to the field of composition accessories of absorption products, and discloses a porous flow guide absorption composite sheet body. Comprising an outer absorption part and an inner reinforced absorption part which are composed of porous absorption layers, the outer absorption part is formed by folding the edges of the two sides of the rectangular, square, quasi-rectangular and quasi-square porous absorption layers inwards, and a folding opening is formed in the center and the adjacent area; the whole inner reinforced absorption part is in a rectangle shape or a rectangle-like shape with the width of 3-5 cm and the length of 6-15 cm, is composed of a porous absorption layer and water absorption covering layers arranged on the two opposite faces of the porous absorption layer, is wrapped in an interlayer formed after the outer absorption part is turned over, and jacks the part of the outer absorption part towards the top face of the outer absorption part. And at least one convex flow guide part is formed on the top surface of the outer absorption part. According to the invention, the self structural characteristics are fully combined, the diversion and diffusion efficiency of menstrual blood is improved by adopting a local thickening bulge mode, the surface moisture degree of the core body is reduced, and the absorption rate of the core body is improved.

The invention belongs to the technical field of precision machining, and relates to a hemispherical harmonic oscillator porous flow channel device for improving abrasive particle material flow field intensity, which comprises a profiling flow channel module, and the profiling flow channel module is composed of a Gyandroid minimal curved surface porous structure profiling flow channel main body and a flow channel nozzle base, the specific structure is as follows: a Gyandroid minimum curved surface porous structure is a profiling runner main body structure, the porous structure is formed by stacking and connecting Gyandroid minimum curved surface cell elements with uniform density layer by layer, and the porosity of the porous structure can be selected as 30%, 50% and 70% respectively; a flow channel base is machined, the exterior of the flow channel base is of a columnar structure, a conical through hole is formed in the columnar structure, the inner wall of the conical through hole is of a threaded structure, and a profiling module is fixed to the base; geometric parameters of a polishing channel are precisely adjusted, an internal fluid path is improved, stress on the surface of a workpiece is more uniform, and then the polishing efficiency of a polishing material on the surface layer of the workpiece is enhanced.

This invention discloses a porous rectifying structure for the afterburner of a variable cycle engine, comprising a rectifying orifice plate installed in an annular channel between the turbine outlet and the flame stabilizer. The orifice plate is symmetrically arranged along its radial central axis, with the clogging area facing the turbine inflow and axially aligned with the heat shield inlet. The orifice plate height is 2 / 3 of the channel height between the central cone and the heat shield. The plate has uniformly distributed pores with an equivalent diameter of 10-20 mm along the radial direction, with a clogging ratio of 5%-25%. This invention forms a multi-stage mixing interface through the radially gradient porosity pore arrangement, promoting shear mixing of the high-temperature internal combustion gas and the external bypass gas. Simultaneously, the static pressure difference across the orifice plate drives the external bypass gas flow into the heat shield cooling channel, increasing the cooling flow rate, improving the uniformity of the upstream velocity field of the flame stabilizer, eliminating the recirculation zone inside the heat shield, reducing the thermal load on the casing wall, and controlling the total pressure loss to within 3%, achieving high-stability combustion and reliable thermal protection under a wide bypass ratio.

The application is suitable for the field of heat exchangers, and provides a length-variable condensable porous steady flow device heat exchanger, which comprises a mounting plate and further comprises a first supporting frame, a second supporting frame, an outer sleeve, a first end cover, a second end cover, a sliding support, a length adjusting assembly, a heat exchange pipe, a pressure sealing assembly, a first mounting plate and a second mounting plate; the outer sleeve comprises a first outer sleeve and a second outer sleeve, and the heat exchange pipe comprises a first heat exchange pipe and a second heat exchange pipe. Cooling water enters the second outer sleeve from a water inlet, flows out from a water outlet after passing through the first outer sleeve, material enters the second end cover from a material inlet, then enters the first end cover by passing through the first heat exchange pipe and the second heat exchange pipe, the material exchanges heat with the cooling water when passing through the first heat exchange pipe and the second heat exchange pipe, and then is discharged from a material outlet, when the heat exchange stroke is adjusted, the length adjusting assembly changes the length of the outer sleeve and the heat exchange pipe by moving the sliding support.

This invention discloses a mobile thermal management energy storage cabinet, belonging to the field of energy storage cabinets. The mobile thermal management energy storage cabinet includes a cabinet body with a hinged door. It includes a dual airflow control assembly and a condensate self-evaporation exhaust assembly. The dual airflow control assembly includes a heat dissipation duct located on the rear side inside the cabinet body. The heat dissipation duct is laterally divided into two cavities, with a porous flow equalization baffle between the two cavities to achieve uniform pressure distribution of cold air. Cold air generated by an industrial air conditioner installed on the cabinet door enters the heat dissipation duct and is uniformly guided to the battery pack inside the cabinet after pressure equalization. The condensate self-evaporation exhaust assembly includes an exhaust component installed in the lower half of the cabinet door, filled with evaporation filler to solve the problem of large temperature differences in the battery pack caused by direct airflow from the air conditioner; to solve the problem of waste heat from the energy storage converter recirculating and heating the battery pack; and to solve the problem of leakage and short circuits caused by easily damaged condensate pipes.

The utility model relates to the technical field of refrigeration, in particular to a heat dissipation device. In the prior art, aluminum radiating fins are commonly used for heat conduction of a chip cooler, and heat dissipation is carried out by means of air convection of a fan; or the pipeline flows through an embedded or brazed heat conducting plate to form a refrigerant flow channel, and the heat is taken away by the circular flow of the refrigerant; cooling efficiency is low, process is complex, and cost is high. According to the heat dissipation device, at least a first metal heat conduction plate used for transferring heat is embedded in a non-metal base, and a porous cooling plate through which a refrigerant flows is arranged above the base; the porous cooling plate is internally provided with a plurality of through microporous circulation channels, the middle of one end of the porous cooling plate is sealed and separated to divide the porous cooling plate into two independent circulation channels, and the other end of the porous cooling plate forms confluence to form a complete circulation flow channel; the heat of the heating device is taken away through circular flowing of the refrigerant for heat dissipation. The cooling area is greatly increased, namely, the heat exchange efficiency is improved, and the cooling effect is good.

This utility model relates to the field of semiconductor material preparation technology, specifically disclosing a resistance heating epitaxial furnace for growing epitaxial layers on silicon carbide substrates. The furnace includes a furnace body with a heat insulation layer fixedly connected to its inner wall. The heat insulation layer consists of a graphite felt layer, a carbon fiber felt layer, and an alumina ceramic layer, arranged sequentially from the inside out. Sealing flanges are detachably connected to the upper and lower ends of the furnace body via bolts. The heating mechanism includes a multi-layered annular heating structure axially distributed along the inner wall of the furnace. Axial zone temperature control of the multi-layered annular resistance heating element, edge compensation of the auxiliary heating ring, and base rotation reduce the temperature difference on the substrate surface, resulting in a more uniform epitaxial layer thickness. The combination of a spiral guide tube and a porous flow equalizer reduces gas flow velocity deviation. Simultaneously, resistance heating is highly efficient and more energy-saving than induction heating, and eliminates the need for a high-frequency power supply and electromagnetic shielding structure, reducing manufacturing costs. The heat insulation layer also reduces heat loss.

The utility model discloses a gas water heater combustion chamber airflow distribution structure relates to gas water heater combustion system technical field, including the combustion chamber, and the inside bottom plate of combustion chamber is equipped with the reverse buckle type casing, and the casing is surrounded with bottom plate and is formed distribution cavity, the casing upper end surface is equipped with a plurality of integrated gas outlet pipe, and the gas outlet pipe is connected with above fire row one to one correspondence, and distribution cavity is equipped with the gas jet of corresponding gas outlet pipe along the length direction, and the gas jet is connected with the manifold through the gas distribution manifold, and the bottom plate middle part outside is equipped with the fan, and the air outlet of fan communicates distribution cavity, distribution cavity is equipped with trapezoidal shunt flow guide grid, gradient aperture / opening rate's porous flow equalizing plate, longitudinal isolation board and gas outlet pipe pressure compensation ring. The structure realizes airflow even distribution, gas - air full premixing, and promotes the stability of combustion.

The utility model provides an extruder die head, and belongs to the technical field of extruder die head design, the extruder die head comprises a connection section, a core die, a mouth die and a die sleeve which are connected in sequence, the two ends of the connection section are provided with a main runner and a secondary runner respectively, a porous runner communicating the main runner with the secondary runner is arranged in the connection section, and a sprue spreader is arranged in the main runner; the functions of a perforated plate, a connecting section, a splitter plate and the like of a traditional extruder die head are replaced by the connecting section, so that the die head is more convenient to install, the volume of a flow channel in the die head is greatly reduced, the phenomena of material decomposition or superplasticization and the like can be effectively reduced when thin-wall pipes and other pipes with few materials are extruded, and the production cost is reduced. The problem that the appearance and the performance of a thin-wall pipe finished product are affected due to the fact that a polymer material is easy to decompose or superplasticize in a machine head when the polymer material required by the pipe is less in a traditional extruder die head is solved.

The invention relates to the technical field of fluid distributors, and discloses a fluid distributor of an air conditioner heat exchanger, which comprises a distribution cavity, a capillary channel, a liquid discharge pipe, a constant temperature cavity, a pressure stabilizing cavity, a main liquid inlet pipe, a shell, a telescopic pipe and a porous flow slowing plate, the pressure stabilizing cavity is arranged at one end of the shell, and the inlet end of the pressure stabilizing cavity is communicated with the main liquid inlet pipe; the electric air cylinder drives the telescopic pipe to stretch out and draw back, the volume of a cavity formed by the constant-temperature cavity and the telescopic pipe is dynamically adjusted in combination with cooperative control of the stroke sensor and the temperature sensor, and the constant-temperature constant-temperature device adapts to the extreme temperature difference working condition in winter and summer; the residence time of refrigerants is prolonged in winter to guarantee sufficient temperature rise, the cooling period is optimized in summer, the problems of capillary tube shrinkage and blockage caused by insufficient temperature rise of a traditional fixed constant-temperature cavity and capillary tube expansion caused by untimely cooling are effectively solved, the stability of the inner diameter of the capillary tube and flow resistance is maintained, and equal-resistance and equal-flow equal distribution of refrigerants is guaranteed.

The aquatic product cold-chain preservation cabin with temperature and humidity adjustment and the preservation method belong to the technical field of aquatic product cold-chain transportation and preservation, and comprise: the double-layer micro-porous flow guide wall is fixedly connected to the left and right side walls in the cabin body, the flow guide wall is composed of a solid baffle and a punched aluminum plate, and a static pressure cavity is arranged between the solid baffle and the punched aluminum plate; an evaporator is fixedly connected to the top of the cabin body, a variable frequency fan is fixed to the air inlet side of the evaporator, and a condensate water collecting groove is fixed directly below the evaporator, the bottom of the condensate water collecting groove is provided with a flow guide slot; a capillary evaporation net is clamped in the flow guide slot, the upper end of the capillary evaporation net is connected to the liquid water in the groove, and the lower end of the capillary evaporation net is flatly attached to the back of the punched aluminum plate; in addition, a phase change cold storage plate is fixed in the static pressure cavity and is arranged close to the inner side of the solid baffle; and a main control board is responsible for controlling the variable frequency fan and the compressor, the present application prevents the water loss of the aquatic products in the cold chain process, and simultaneously realizes the uniform distribution of the humidified cold air by means of the static pressure cavity and the punched aluminum plate, thereby significantly improving the preservation quality.

The invention relates to the technical field of composite pipes, and discloses a high-sealing-performance polyethylene composite pipe which comprises two polyethylene composite pipe bodies, and a plurality of porous flow dividing holes are formed in the two polyethylene composite pipe bodies. The adaptive sealing mechanism comprises a pipe connector sealing compensation module arranged at the joint of the two polyethylene composite pipe bodies in a sleeving mode and connecting ring sleeves fixedly installed on the two sides of the pipe connector sealing compensation module, and the two connecting ring sleeves are installed on the outer walls of the two polyethylene composite pipe bodies correspondingly. Through the arrangement of the adaptive sealing mechanism, stable support can be provided for the pipe, outer wall breakage caused by too deep tooth form is avoided, sliding pressure relief of the sealing joint after pressurization caused by too shallow tooth form can be prevented, the success rate of static pressure test is effectively guaranteed, and the larger the pressure is, the stronger the sealing effect is; meanwhile, interface gap fluctuation caused by geological changes and temperature changes is dynamically adapted, and the risk of series leakage is eradicated.

The invention provides a design method and device for an aviation airborne porous system complex flow channel shell part, and belongs to the field of aviation hydraulic pressure. The method comprises the following steps: generating an arrangement scheme of internal interfaces; on the basis of the arrangement scheme, a flow channel space path and corresponding geometric parameters are generated through a path planning algorithm; the runner space path is processed on the basis of a geometric processing rule corresponding to the manufacturing process type, and an initial hole system structure blank is formed through a feature modeling algorithm on the basis of the geometric parameters and the processed path; performing performance prediction, manufacturability rule examination and geometric envelope analysis on the initial hole structure blank to obtain evaluation data; based on the evaluation data, generating an adjustment suggestion for the arrangement scheme of the internal interface through a second artificial intelligence model; updating the arrangement scheme of the internal interfaces according to the adjustment suggestion to obtain a convergent hole system structure blank; and outputting a shell part design result. According to the method and device provided by the invention, intelligent optimization design of the aviation porous runner shell can be realized.

The invention provides a PE raw material particle drying device which comprises a drying cylinder, the axis of the drying cylinder is vertical, a tapered air inlet cavity is formed in the bottom of the drying cylinder, and a porous flow dividing cone is arranged in the air inlet cavity; the dehumidification bed module comprises a honeycomb dehumidification bed and an annular vibration mechanism, the honeycomb dehumidification bed is arranged above the porous diversion cone, the annular vibration mechanism is fixed to the inner wall of the drying cylinder, and the honeycomb dehumidification bed is connected with the vibration mechanism and driven by the vibration mechanism to vibrate; and the rotary material shifting mechanism comprises a power assembly fixed to the top of the drying cylinder and a material shifting plate assembly which is in transmission connection with the power assembly and is arranged close to the surface of the honeycomb dehumidification bed. Materials can be in full contact with hot air flow, and drying of the materials is accelerated.

The invention provides a porous pressure stretching forming die with heat preservation runners. The porous pressure stretching forming die is characterized in that a first porous runner array which is arranged in the radial direction is arranged in a die main body; the porous runner layer is installed on the mold body, a second porous runner array is arranged in the porous runner layer in the radial direction, and inlets of second porous runners communicate with outlets of the first porous runners in a one-to-one correspondence mode; the heat preservation runner layer is installed between the mold body and the porous runner layer and comprises a plurality of heat preservation areas, each heat preservation area is composed of a plurality of heat preservation runners communicating with one another, and the heat preservation runners surround the periphery of the corresponding first porous runner and the periphery of the corresponding second porous runner. The heat preservation flow channels are filled with heat preservation fluid and connected with an external temperature control system, and the temperature of each heat preservation area is independently controlled. Efficient temperature control of a melt flowing area is achieved, the overall temperature difference of the melt area is reduced, the discharging speed difference is reduced, the low-temperature gelation phenomenon is reduced, and the pore channel blocking rate is reduced.

The waste heat utilization energy-saving heat exchanger comprises a shell-and-tube heat exchanger, a shell pass fluid inlet pipe is fixedly installed at the top end of one side of the shell-and-tube heat exchanger, and a shell pass fluid outlet pipe is fixedly installed at the bottom end of the other side of the shell-and-tube heat exchanger. According to the energy-saving heat exchanger for waste heat utilization, the porous flow equalizing hemispheres in the inlet pipe are used for dispersing and mixing cold fluid and hot fluid so as to eliminate thermal stratification; a downstream first-stage turning plate structure is matched to change the overflowing sectional area to roughly adjust the flow, and a second-stage conical valve structure is matched to finely adjust the sectional area of a reducing channel, so that the graded control of the flow speed is realized; and meanwhile, a spring buffer assembly in the secondary structure is combined to absorb fluid impact energy and prevent the valve element from shaking, so that the temperature uniformity and the flow velocity stability of fluid entering the heat exchanger tube bundle are ensured, and the heat exchange efficiency and the service life of equipment are improved.

The flow equalizing device comprises a first flow equalizing element, a second flow equalizing element and a porous flow equalizing element, the second flow equalizing element is installed at the position, located at an air inlet, in a layer air box, the first flow equalizing element is installed at the position, close to the second flow equalizing element, in the layer air box, and the porous flow equalizing element is installed at the position, located at the air inlet, in the layer air box. The second flow equalizing element is perpendicular to the first flow equalizing element; the porous flow equalizing element is installed in the layer air box and located on the windward side of the secondary air volume measuring element, and the porous flow equalizing element is adjacent to the first flow equalizing element. According to the layer secondary air channel flow equalizing device, the second flow equalizing element, the first flow equalizing element and the porous flow equalizing element are sequentially arranged at the air inlet and the secondary air volume measuring element in the layer air box, so that secondary air reaching the secondary air volume measuring element flows uniformly, and the air speed distribution uniformity in a layer secondary channel is improved; the error of data measured by the secondary air volume measuring element is small, and actual air volume data are provided for operators.

The invention relates to the technical field of electrolytic bath structures, in particular to a three-dimensional porous flow field plate electrolytic bath structure. Linkage rods are inserted into the inner sides of limiting grooves and are in sliding connection with the limiting grooves, so that the limiting grooves can relatively limit the linkage rods, it is ensured that the limiting grooves accurately control the movement track of the linkage rods, and the positioning precision is ensured; the ratchet wheel at the bottom of the shifting disc is meshed with the pawl on the inner side of the bottom plate, and the locking state is kept under the action of the second spring. According to the design, the shifting disc can only rotate in one direction and is prevented from returning after positioning, when repositioning is needed, the pawl is separated from the ratchet wheel by pulling the pull rod, the shifting disc can freely rotate at the moment, the position of an electric pile is convenient to adjust, the alignment work of manually aligning the multi-layer three-dimensional porous flow field plate can be reduced through the abutting rod on the outer side, and the working efficiency is improved. And the edge of the three-dimensional porous flow field plate is tidier during installation, so that the influence on subsequent electrolytic cell work caused by deviation is avoided.

The invention discloses a water injection performance testing device for a screw vacuum pump, and relates to the technical field of production and detection of screw vacuum pumps. Flow coverage of three orders of magnitude is achieved through the three branch pipes (0.1-1 L / min, 1-10 L / min and 10-100 L / min) which are connected in parallel, and the test requirement from minimal quantity lubrication to large-flow cooling is met; the float flowmeter with the adjusting needle valve supports manual / automatic flow calibration with the precision of + / -0.5%, and the problems that a traditional single pipeline is narrow in adjusting range and large in error are solved; meanwhile, the pressure reducing valves A / B / C on the branch pipes can independently control the water pressure, and the 30-degree inclined porous splitter plate in the pressure buffer tank is matched to restrain the water flow pulsation within + / -2%, so that the water injection stability is ensured.

The utility model relates to the technical field of new energy automobile cooling systems, in particular to a uniform flow type efficient power battery liquid cooling plate which comprises a water inlet pipe, a water outlet pipe, a water inlet collecting pipe, a water outlet collecting pipe, a porous runner plate and a uniform flow partition plate, the porous runner plate is provided with a plurality of small holes, and the small holes are round holes, square holes or special-shaped holes. The uniform flow partition plate is arranged in the water inlet collecting pipe, the porous flow channel plates are arranged in parallel, the two ends of each porous flow channel plate are connected to the water inlet collecting pipe and the water outlet collecting pipe respectively, the water inlet pipe and the water outlet pipe are connected to an external pipeline through flanges respectively, and all the components are integrated through brazing. The utility model has the advantages that the temperature difference between the battery cells of the power battery pack can be reduced, the temperature uniformity is improved, and the service life of the battery is prolonged.

The invention relates to the technical field of conveying belts, in particular to a mechatronics conveying device and an adsorption state diagnosis method thereof. The device comprises a rack, a conveying belt face, a vacuum cavity, a vacuum generating device and a core airflow management assembly. The airflow management assembly is formed by stacking a porous flow equalizing layer and a flow channel base plate, and a plurality of self-adaptive nonlinear flow channels are arranged in the flow channel base plate. According to the structure of the flow channel, when the suction holes are not covered by materials, a flow separation area is formed in the flow channel, and flow resistance is remarkably increased; and when the suction holes are covered by materials, the flow channel keeps low flow resistance, so that negative pressure can be preferentially distributed to an effective adsorption area without additional control, and passive negative pressure intelligent distribution of high resistance of the air leakage holes and low resistance of the adsorption holes is realized. According to the design, invalid leakage is remarkably reduced, power consumption is reduced while the vacuum pump keeps the target vacuum degree, and therefore the adsorption capacity and conveying efficiency of an effective adsorption area are improved.

The invention relates to the technical field of proton exchange membrane water electrolysis hydrogen production, and provides a method for predicting the gas holdup of a porous microstructure flow PEM hydrogen production device, which comprises the following steps: acquiring basic parameters of a porous flow field; establishing a two-dimensional gas holdup prediction mathematical model for describing the change of gas phase and liquid phase mass flow in unit width of the porous flow field along the flow direction; determining boundary conditions of a flow field inlet and a side wall of the porous flow field to construct a complete two-dimensional boundary value problem; establishing a function relationship between the local gas holdup and the basic parameters; and on the basis of the function relationship and the two-dimensional boundary value problem, carrying out on-way solving calculation so as to output the gas holdup at each differential position in the fluid flowing direction as a two-dimensional gas holdup distribution prediction result of the porous flow field in the length and width directions. The gas holdup prediction method can give consideration to both calculation efficiency and prediction precision, and is easy to couple electrochemical variables.

Analytic fluid device (1) comprising: a substrate (2); a channel negative layer (3) printed onto the substrate (2) and forming at least partially a capillary channel (4) that is configured to guide a fluid (9) along a path (5) that is at least partially defined by the capillary channel (4); and at least one porous fluid reservoir (6) coupled to the capillary channel (4) and configured to receive at least a portion of the fluid (9) after being guided along the path (5) and / or provide at least a portion of the fluid (9) before being guided along the path (5).

The utility model discloses an intelligent flow control type waste water delivery pump which comprises a delivery pump body, a water inlet pipe opening and a water outlet pipe opening are formed in the two sides of the operation end of the delivery pump body respectively, the outer end of the water inlet pipe opening is fixedly connected with an overflowing pipe cabin, and the interior of the overflowing pipe cabin is divided into a water inlet chamber on the left side and a water outlet chamber on the right side. The water outlet chamber is communicated with the outer end of the water inlet pipe opening, the second flow guide holes in the second flow disc and the first flow guide holes in the first flow disc are overlapped in a shearing mode, the smaller the overlapping amplitude is, the smaller the unit flow flowing into the water outlet chamber from the water inlet chamber is, the smaller the water pressure and the erosive wear brought to the water inlet pipe opening and the pump body are, and vice versa. The sewage can enter the pump body more linearly and smoothly due to the output of the uniform porous flow disc; the problems that operation power consumption is increased and flow output is not linear and smooth enough when an existing waste water conveying pump faces a high water pressure condition are effectively solved.

A system for adjusting planar porous flow, speed and concentration based on gas-solid coupling characteristics belongs to the field of instruments and meters, is applied to conveying of gas-solid two-phase flow, and monitors and feeds back to an adjusting valve in real time according to the detection principle of static electricity and capacitance. The flow and speed of gas-solid two-phase flow flowing in the conveying pipeline and the concentration of solid-phase particles are adjusted through the adjusting valve, the adjusting speed is high, and the adjusting effect is good.

Disclosed are flow-through electrode devices and techniques for making flow-through electrodes. In one aspect, a flow through electrode apparatus comprises one or more fiber layers. Each fiber layer comprises a plurality of fibers oriented to be orthogonal to a flow direction of a fluid. The plurality of fibers are configured to cause an inertial flow of the fluid around the plurality of fibers at a first flow rate of the fluid.