53 results about "Fluid layer" patented technology

The invention relates to the technical field of physical acoustics, in particular to a saturated porous medium metasurface Portrait wave frequency dispersion relation calculation method and system, and the method comprises the following steps: obtaining expressions of solid skeleton displacement, fluid relative displacement, total stress, solid shear stress and pore pressure under the action of Portrait waves; obtaining an expression of a fluid displacement component and a fluid normal stress; obtaining an expression about the relative motion of the resonator; according to all the expressions, stress and displacement continuity boundary conditions are applied to the interface of the saturated porous medium and the fluid layer, a characteristic equation of frequency dispersion characteristics is obtained and solved, and a frequency dispersion curve is obtained. According to the method, the explicit frequency dispersion relation of the saturated porous medium metasurface portrait waves is provided, the calculation efficiency and prediction precision of complex interface wave propagation are improved, the optimal design of the metasurface resonator array can be guided, and a key theoretical tool and technical support are provided for design of high-performance acoustic functional devices and structures.

A medical pad for exchanging thermal energy between a targeted temperature management (TTM) fluid and a patient is disclosed. The pad can include a fluid containing layer and a fluid conduit attached therewith via rotatable joint where the joint is configured to facilitate rotation of the fluid conduit with respect to the pad. A method of manufacturing the pad can include coupling a first member of the rotatable joint to a fluid delivery line, coupling the second member to the fluid containing layer, and inserting the first member within an opening of the second member to facilitate a snap-fit retention mechanism between first member and the second member. A method of using the pad can include rotating the fluid delivery line relative to the thermal pad via the rotatable joint when initially applying the pad to the patient or when adjusting an orientation of the pad on the patient.

The invention discloses a laminar flow micro-fluidic chip and method for detecting spatial heterogeneous drug distribution influence, the chip comprises a fluid layer and a control layer, the fluid layer comprises a first main inlet and a second main inlet, the fluid layer further comprises a plurality of independent cell culture chambers of an array, the control layer comprises a control valve inlet and a pneumatic valve array, and the control valve inlet is communicated with the pneumatic valve array. The independent cell culture chamber is composed of a concave cavity, the independent cell culture chamber is provided with two semicircular enclosures, a first channel inlet and a second channel inlet are formed in the independent cell culture chamber, and peristaltic pump subunits are arranged on the first channel inlet and the second channel inlet. Laminar flow control is achieved by integrating the pneumatic valve and the peristaltic pump, and chemical gradient generation and cell response monitoring of micron-sized spatial resolution are achieved through automatic control.

The invention relates to a method for wringing a rolled strip (2), the method comprising: - / A / Providing a wringing installation comprising two hydrodynamic pads (6), extending lengthwise over a width of the rolled strip (2), - / B / Advancing said rolled strip (2) between two hydrodynamic pads (6) in a defined direction (V) from upstream to downstream, - / C / Applying pressure to the hydrodynamic pads (6) one towards the other on either side of the rolled strip (2), along a clamping plane transverse to the strip, during the advance of said rolled strip (2), the hydrodynamic pads (6) sliding on the rolled strip (2) by means of a layer of fluid, each of the hydrodynamic pads (6) performing a first wringing operation by blocking at least a portion of a lubricant layer of the strip coming From upstream to downstream, - / D / Aspiration,via a suction orifice (9) located downstream of the hydrodynamic pads (6) of at least part of a residual layer of fluid, thus performing a second wringing operation on the belt. The invention also relates to an associated wringing installation.

The invention relates to the field of cooling, and discloses a liquid cooling system and electronic equipment, and the system comprises a cold plate which can accommodate a heat dissipation medium; the liquid supply assembly is used for providing a heat dissipation medium for the cold plate; and the pulse flow adjusting assembly is arranged between the liquid supply assembly and the cold plate and used for enabling the heat dissipation medium to form pulse flow, and the pulse flow enters the cold plate. A cooled surface is directly impacted by a pulse flow, a heat boundary layer on the surface can be instantly damaged and washed away, the heat exchange efficiency can be seriously hindered by the almost static fluid layer with very high temperature, the limitation can be broken by periodic impact brought by the pulse flow, new cold fluid is in direct contact with the heat exchange surface, and the heat exchange efficiency is improved. Therefore, a high instantaneous convective heat transfer coefficient is generated, and the problem that the heat transfer coefficient is difficult to increase due to stable thickening of the heat transfer boundary layer is effectively solved.

The application discloses a kind of crosslinked polyethylene insulated power cables for ocean engineering, including outer covering, armoring layer, inner sheath, filling layer and three conductor structures;Buffer system is also provided at filling layer, buffer system includes fluid layer close to inner sheath, and fluid layer is filled with buffer fluid;Three buffer bodies are set between three conductor structures, buffer body is sequentially set into surface layer, intermediate layer and inner layer from fluid layer towards the direction of cable center, surface layer is in contact with fluid layer, and surface layer and fluid layer are communicated by a plurality of pores, surface layer is filled with polygonal hole structure, and the buffer fluid entering is guided to form laminar flow;Intermediate layer is filled with fractal pore structure, and the buffer fluid entering is guided to travel vortex flow;Inner layer is tubular hole structure, and is communicated with fluid layer, by guiding buffer fluid directional flow when under pressure, avoid local stress concentration, while forming three-dimensional multi-layer pressure distribution, prevent cable from being damaged under high strength pressure.

This invention discloses a skin organ-on-a-chip, relating to the fields of biomedical engineering and microfluidics. The chip includes a drive module integrating a reservoir with a fixed height difference, a culture layer with arrayed independent skin culture units, and a fluid layer separated by a porous membrane. The drive module utilizes the hydrostatic pressure generated by the liquid level difference to drive the culture medium to form a stable laminar flow in an optimized fluid channel network, achieving pump-free perfusion. This invention achieves stable pump-free drive through a reservoir with a fixed height difference; the integrated sealed structure eliminates the risk of contamination and ensures complete isolation between units; the simulation-optimized uniform flow channel network, in synergy with the drive, ensures high consistency in high-throughput parallel culture, enabling the chip to provide a long-term stable biomimetic perfusion microenvironment. A single experiment can efficiently complete multiple replicates and multi-condition transdermal drug screening, toxicity testing, and disease model construction, improving experimental throughput, data reliability, and ease of operation.

The invention provides a temperature prediction method and system for geothermal fluid at an outlet of a geothermal field, and belongs to the technical field of geothermal development. The method for predicting the temperature of the geothermal fluid at the outlet of the geothermal field comprises the following steps: dividing a development target interval to obtain a plurality of thermal storage fluid layers of the development target interval and interpretation data of each thermal storage fluid layer; according to the interpretation data of each thermal storage fluid layer in the development target interval, determining the heat obtained after geothermal fluid in each thermal storage fluid layer reaches a wellhead from the current thermal storage fluid layer in unit time; according to the heat which can be obtained after the geothermal fluid in each thermal storage fluid layer reaches the wellhead from the current thermal storage fluid layer in unit time, the heat which can be obtained after the geothermal fluid in the development target interval reaches the wellhead is determined; and according to the heat obtained after the geothermal fluid in the development target interval reaches the wellhead, the temperature of the geothermal fluid in the development target interval after the geothermal fluid reaches the wellhead is estimated.

To suppress deterioration in the performance of a heat exchanger. [Solution] The heat exchanger comprises a plurality of stacked fluid layers (100) and a partition member (400) arranged between adjacent fluid layers (100) in a stacking direction (V1) of the plurality of fluid layers (100). The multiple fluid layers (100) include a first layer (110) and a second layer (120) adjacent to each other in the stacking direction (V1), the first layer (110) includes a first part (M1) and a second part (M2), the second layer (120) includes a third part (M3) and a fourth part (M4), and when viewed in the stacking direction (V1), the first part (M1) and the third part (M3) have a portion where they overlap each other, and the second part (M2) and the fourth part (M4) have a portion where they overlap each other, and at least a portion of the first gap (S1) and at least a portion of the second gap (S2) are separated from each other.

This heat exchanger comprises: a plurality of stacked fluid layers (100); and a partition wall member (400) disposed between the fluid layers (100) adjacent to each other in the stacking direction (V1) of the plurality of fluid layers (100). The plurality of fluid layers (100) include a first layer (110) and a second layer (120) adjacent to each other in the stacking direction (V1). The first layer (110) includes a first component (M1) and a second component (M2), and the second layer (120) includes a third component (M3) and a fourth component (M4). When viewed in the stacking direction (V1), the first component (M1) and the third component (M3) have locations overlapping each other, the second component (M2) and the fourth component (M4) have locations overlapping each other, and at least a portion of the first gap (S1) and at least a portion of the second gap (S2) are separated from each other.

The invention relates to a jacketing machine for a heat exchange component of a soil cold and heat storage system. The jacketing machine is characterized by comprising a winch, a protective pipe with a turnover anti-drag chassis, a water supply pipe, a water supply source and a control system. The turnable anti-drag chassis comprises a plurality of chassis fragments which are equally divided according to the 360-degree circumferential angle, and the chassis fragments are connected with the bottom end of the protective pipe through a one-dimensional rotating pair mechanism. The bottom surface of the turnable anti-drag chassis is an anti-drag surface and comprises a plurality of outlet holes; the outlet holes are communicated with a water supply source through a water supply network and a water supply pipe. The sling is put down the protection pipe, water flows out of the outlet holes, the soil on the drag reduction surface is slurried through water outflow, and a fluid thin layer is formed between the soil boundary and the drag reduction surface; the resistance of the fluid thin layer to the protective pipe is extremely weak, and the protective pipe is formed under the action of the gravity of the protective pipe and conveys the heat insulation sleeve to a designated position; then the outlet hole stops discharging water, so that the winch is paused; and the heat insulation sleeve is fixedly connected with the heat exchange component, and finally the winch pulls up the protection pipe to return.

Instrument for performing a diagnostic test on a fluidic cartridge A cartridge reader is for carrying out a diagnostic test on a sample contained in a fluidic cartridge inserted into the reader. The fluidic cartridge comprises a fluidic layer comprising at least one sample processing region, at least one collapsible blister containing a liquid reagent, a pneumatic interface, an electrical interface and at least one mechanical valve. The reader comprises a housing; an upper clamp occupying a fixed position relative to the reader, and a lower clamp, movable relative to the first clamp, wherein the upper clamp and the lower clamp define a cartridge receiving region therebetween. The reader comprises a thermal module comprised in the lower clamp, wherein the thermal module comprises at least one thermal stack for heating the at least one sample processing region of the cartridge inserted into the reader. The reader comprises at least one mechanical actuator for actuating the mechanical valve comprised in the cartridge inserted into the reader.

The invention discloses a three-dimensional observation device for conversion between laminar flow and turbulent flow of fluid, and belongs to the technical field of liquid state observation, the three-dimensional observation device comprises a flow monitoring unit, and the lower side of the flow monitoring unit is provided with an installation unit for installation. One side of the flow monitoring unit is provided with a backflow unit which is used for repeatedly utilizing water in the flow monitoring unit, and the lower side of the backflow unit is provided with a rotating unit which is used for selectively installing and rotating the flow monitoring unit. The fluid flow state change is converted into visual mechanical displacement indication, the conversion node from laminar flow to turbulent flow can be accurately captured, the flow state change does not need to be subjectively judged by human naked eyes, observation errors are effectively avoided, and the accuracy of fluid laminar flow and turbulent flow conversion observation is greatly improved; meanwhile, the transmission process is stable and smooth due to the limiting matching design of all the transmission parts, and the timeliness and accuracy of flow state indication are guaranteed.

This invention discloses an underwater sound-absorbing metamaterial based on synergistic coupling resonance and its applications. It comprises M×M subunits arranged periodically along a plane, each subunit consisting of N×N unit cells of uniform geometric dimensions. Each unit cell includes an upper matrix layer, a lower matrix layer, and a coupled resonance intermediate layer embedded between the upper and lower matrix layers. The coupled resonance intermediate layer is symmetrically fastened to the center of an intermediate insert with upper and lower dual harmonic oscillators, respectively, and is embedded between the upper and lower matrix layers. A fluid layer and a backing are sequentially distributed below the lower matrix layer. This underwater sound-absorbing metamaterial can synergistically couple the multi-displacement modes of the intermediate layer, as well as the synergistic coupling resonance excited together with the fluid layer and the backing, thereby forcing the upper and lower matrix layers to dissipate the wave energy in the structure to a great extent using their high loss factors.

A method for drying a rolled strip is disclosed comprising: supplying a drying facility comprising two hydrodynamic pads, respectively extending in length over a width of the rolled strip, advancing rolled strip between two hydrodynamic pads in an advancement direction defined from upstream to downstream, applying pressure of the hydrodynamic pads, one towards the other, on either side of the rolled strip, following a clamping plane transverse to the strip, during the advancement of rolled strip, the hydrodynamic pads sliding on the rolled strip by means of a layer of fluid, each of the hydrodynamic pads carrying out a first drying operation by blocking at least one portion of a lubricating layer of the strip coming from upstream towards downstream, and sucking in, via a suction orifice located downstream of hydrodynamic pads, at least a portion of a residual fluid layer, thus performing a second drying operation of the strip.

This invention relates to the field of mixing equipment technology, and in particular to a mixing device for a selective catalyst fluid generator, comprising: a mixing cylinder having a mixing chamber, an air outlet channel formed on the right end face of the mixing cylinder, and an air inlet channel formed on the left end face of the mixing cylinder; a scraper fixed on a first feed pipe, and mixing blades installed on a second feed pipe; and a purification mechanism for removing impurities from the fluid. The purification mechanism is arranged in the air outlet channel. The rotation of the second feed pipe drives the spirally arranged mixing blades to generate a strong stirring effect. The spiral arrangement not only increases the flow path of the fluid in the mixing cylinder, but also promotes the exchange and mixing between different fluid layers. The L-shaped scraper can scrape the inner wall of the mixing cylinder, effectively preventing the fluid from depositing or scaling during the mixing process. Through the design of the purification mechanism, impurities in the fluid can be removed, improving the cleanliness of the reaction product.

The application discloses a heat dissipation structure applied to a high-power light emitting device, which comprises the following parts: a light emitting device emitting high-power laser light, wherein the light emitting device is a thin-layer type light emitting device, one side of the light emitting device is a light emitting surface, the other side is a cooling surface, the thickness of the light emitting device is A, the diameter of the light emitting area of the light emitting device is B, and A is less than B / 5; a cooling fluid layer flowing fast, which is arranged below the cooling surface and is used for absorbing and conducting the heat of the light emitting device, and the minimum distance between the cooling fluid layer and the cooling surface is C, and C is less than B / 5; and a supporting lens arranged on the light emitting surface and used for supporting and conducting light of the light emitting device, wherein the thickness of the supporting lens is D, and D is greater than 5A. The heat dissipation capacity of the high-power light emitting device can be improved, so that the power of the light emitting device is improved.

A method for manufacturing a substrate of a carrier plate, a bearing structure is formed in a mold, a plurality of columns are inserted, a fluid layer is formed on the bearing structure, a molten glass is covered on the fluid layer and covers the plurality of columns, after the molten glass is cooled to solidify into a glass substrate, the fluid layer, the mold, the bearing structure and the plurality of columns are sequentially removed to form a plurality of through holes on the glass substrate, so that the plurality of columns are removed to form the through holes, which is not only simple in process, but also short in process time, thus facilitating mass production.

Cart (10) for precision equipment, wherein the cart (10) comprises: a frame (20) having a plurality of supports or beams (30) to support or carry the precision equipment at a plurality of points; a plurality of fluid floaters (40) attached at several respective positions on the frame (20); and a drive element (50; 52, 54); wherein: the drive element (50; 52, 54) can be freely raised and lowered in relation to the frame (20), the majority of fluid floaters (40) float the frame (20) together with the precision equipment and are configured to be able to form a fluid layer between the frame (20) and a ground surface, and the drive element (50; 52, 54) is configured such that in a state in which the frame (20) floats, the drive element (50; 52, 54) is lowered by an elevator (26) and can be pressed against the floor surface.

This invention provides an effective structure for maintaining a suitable temperature in a robot. The robot (100) includes: a frame (500); a skin (502) covering the frame (500); a heat source for heating a fluid; and a pressurizing unit that pressurizes a space (504) surrounded by the frame (500) to allow the heated fluid to flow out of the space (504), thereby forming a fluid layer (506) between the skin (502) covering the frame (500) and the frame (500). The pressurizing unit draws in external air from the interior of the frame (500) to pressurize the space (504).

TITLE: WRINGING METHOD AND WRINGING INSTALLATION The invention relates to a method for wringing a rolled strip, the method comprising: / A / Providing a wringing installation comprising two hydrodynamic pads, extending lengthwise over a width of the rolled strip, / B / Advancing said rolled strip between two hydrodynamic pads in a defined direction of advance from upstream to downstream, / C / Applying pressure to the hydrodynamic pads, one towards the other, on either side of the rolled strip, along a clamping plane transverse to the strip, during the advance of said rolled strip, the hydrodynamic pads sliding on the rolled strip by means of a layer of fluid, each of the hydrodynamic pads performing a first wringing operation by blocking at least a part of a lubricant layer of the strip coming from upstream to downstream, / D / Aspiration,through a suction orifice located downstream of the hydrodynamic pads, at least part of a residual layer of fluid is removed, thus performing a second wringing operation on the belt. The invention also relates to an associated wringing installation. Figure 3,

A method for measuring flow-induced vibration of plate fuel includes the following steps: arranging an electrode matrix on the fuel assembly to be measured; providing a flow field environment and energizing the electrode matrix; calculating the fluid layer thickness between opposing pairs of electrodes based on the excitation signal received by the electrodes, obtaining a thickness-time function; and calculating the overall flow-induced vibration state of the plate fuel assembly based on the thickness-time function of each pair of electrodes. This method enables accurate measurement of multi-point flow-induced vibration behavior even in situations with narrow gaps between plate fuel assemblies, improving the accuracy and reliability of flow-induced vibration measurement and contributing to enhanced safety design and management of reactors using plate fuel. This invention also provides a plate fuel flow-induced vibration measurement device.

The utility model discloses a microreactor and a production device of poly-alpha-olefin base oil. The microreactor comprises a first fluid layer (1), a diffusion layer (2), a reaction layer (3) and a heat exchange layer (4) which are sequentially arranged, wherein the first fluid layer is communicated with the reaction layer through the diffusion layer, the reaction layer is not communicated with the heat exchange layer, the first fluid layer is provided with a first fluid inlet (6), and two ends of the reaction layer are respectively provided with a second fluid inlet (7) and a product outlet (12); a heat exchange medium inlet (8) and a heat exchange medium outlet (9) are formed in the two ends of the heat exchange layer respectively. The micro-reactor disclosed by the utility model is used for the mixed reaction process of gas-liquid, gas-liquid-liquid and other multi-phase fluids, the reaction system is good in mixing effect, and the conversion rate and the target product selectivity are increased. The production device of the poly-alpha-olefin base oil is suitable for producing the poly-alpha-olefin base oil through continuous reaction of synthesis gas.

The invention discloses a plate-fin type phase-change heat storage device based on coupling of stepped fins and stepped phase-change materials. The plate-fin type phase-change heat storage device comprises an inlet part, a heat storage part and an outlet part. The heat storage part internally comprises a plurality of thermal fluid layers and phase change heat storage layers which are arranged at intervals; the phase change heat storage layer is of a stepped fin and stepped phase change material coupling structure, at least three stages of stepped fins and stepped phase change materials are arranged in the flow direction, and the stepped fins and the stepped phase change materials are correspondingly coupled at each stage; the width intervals of the step fins are gradually reduced along with the flow direction, and the melting point of the step phase change material is gradually reduced along with the flow direction. More sufficient heat exchange can be realized between the phase change material and the fluid, so that the temperature of the fluid at the outlet is effectively reduced.

A variable-stiffness spring member may be integrated into a deformable optical element, such as a fluid lens. An example fluid lens may include a substrate, an actuator, a fluid layer disposed between the substrate and the actuator, and a spring member disposed between the substrate and the actuator. The spring member may include a flexure that at least partially surrounds the fluid layer and a spring stiffness of the flexure may differ at each of at least two peripheral locations around the fluid layer. Various other devices, systems, and methods are also disclosed.

The present application relates to a kind of mineralization behavior detection device of floating particle and bubble, belong to mineral flotation technical field, solve the problem that the actual flotation environment does not conform to the problem caused by less test factors in the test equipment in prior art.The present application includes test system, water circulation system and shooting system;Test system includes top cover drive shelter, connecting channel and fluidized tank, and the lower end of top cover drive shelter is connected with the top of fluidized tank by connecting channel;Water circulation system is communicated with top cover drive shelter, and shooting system is used to shoot the mineralization behavior of particle and bubble in top cover drive shelter.The present application applies flowing fluid in the top of top cover drive shelter, due to the influence of boundary condition, fluid layer close to top cover will first move, then this movement is transmitted to the fluid layer below by viscous effect, with the development of flow, one or more eddies with different rotation directions will be formed in the chamber, and different flow field structure and intensity can be simulated.

The present application relates to the technical field of physical acoustics, in particular to a saturated porous medium metasurface Scholte wave dispersion relation calculation method and system, the method comprises the following steps: obtaining the expression of solid skeleton displacement, fluid relative displacement, total stress, solid shear stress and pore pressure under the action of Scholte wave; obtaining the expression of fluid displacement component and fluid normal stress; obtaining the expression about the relative motion of resonator; according to all expressions, stress and displacement continuity boundary conditions are applied at the interface between saturated porous medium and fluid layer to obtain the characteristic equation of dispersion characteristics, and the characteristic equation is solved to obtain the dispersion curve. The present application provides the explicit dispersion relation of saturated porous medium metasurface Scholte wave, improves the calculation efficiency and prediction accuracy of complex interface wave propagation, can guide the optimization design of metasurface resonator array, and provides key theoretical tools and technical support for the design of high-performance acoustic functional devices and structures.

The utility model provides a micro-channel structure and a micro-fluidic chip comprising the same, the micro-channel structure comprises a plurality of liquid inlet channels arranged in parallel and a front-end main channel, one ends of the plurality of liquid inlet channels are used for liquid inlet, and the other ends of the plurality of liquid inlet channels intersect and are communicated with the front-end main channel; the micro-channel structure further comprises a mixing channel composed of a plurality of omega-shaped structure channels connected in sequence, one end of the mixing channel is communicated with the end, away from the liquid inlet channel, of the front-end main channel, the other end of the mixing channel is communicated with a liquid outlet channel, and the cross section area of the front-end main channel is not larger than that of the single liquid inlet channel. The mixing channel adopts an omega-shaped structure channel, so that when fluid passes through each curve of the omega-shaped structure channel, the speed difference between fluid layers can generate shearing force, and the interaction between different fluid layers is enhanced; the bending part of the omega-shaped channel forms a vortex, so that the layering phenomenon of the fluid is further broken, the mixing is promoted, and the mixing efficiency is favorably improved.