96 results about "Fluid layer" patented technology

The utility model discloses a processing device of a material belt for a conical bearing retainer, the processing device comprises a coiling machine and a leveling machine through which the material belt passes in sequence, the coiling machine comprises a coiling turntable wound with the material belt and a bracket for supporting the coiling turntable, and the material belt positioned at the coiling turntable is conveyed to the leveling machine; the leveling machine forms a leveling channel allowing a material belt to move, the leveling machine comprises a leveling part located on the upper side of the leveling channel, a spraying protection part and a wiping part, the spraying protection part and the wiping part are located on the front side and the rear side of the leveling part respectively, and the spraying protection part is used for forming a fluid layer located between the material belt and the leveling part on the surface of the material belt. The leveling part can move towards the material belt located at the leveling channel so as to extrude the material belt located at the leveling channel, and the wiping part is used for removing a fluid layer on the surface of the material belt passing through the leveling channel. The fluid layer is arranged on the side, facing the leveling piece, of the material belt, and after the material belt enters the leveling channel, the fluid layer can protect the surface of the material belt and prevent the surface of the material belt from being scratched.

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.

The invention relates to a micro-fluidic chip integrated with a pneumatic micro valve, a preparation method and a use method. The micro-fluidic chip comprises an interface gas layer, a thin film layer and a fluid layer, the film layer is arranged between the interface gas layer and the fluid layer; the thin film layer is provided with a plurality of concentration gradient control channels, each concentration gradient control channel comprises a dilution inlet, a pneumatic micro-valve array, an observation area and an outlet which are connected in sequence, liquid enters the concentration gradient control channels through the dilution inlets, enters the flow channels provided with the pneumatic micro-valve arrays through the fishbone-shaped mixing micro-channels, and enters the flow channels through the fishbone-shaped mixing micro-channels; pneumatic micro valves in the pneumatic micro valve array are controlled through the interface gas layer so as to realize dynamic regulation and control of concentration gradients, and the fluid layer is used for accommodating dilution liquids with different concentration gradients; the observation area is used for observing diluted liquid in the fluid layer. The technical problem of real-time reconstruction of the concentration gradient of the micro-fluidic chip in the experiment process is solved, and the dynamic experiment requirements of scenes such as cell migration observation and drug time-varying response are met.

The invention relates to a thermal device with a heat storage unit (105) for storing and releasing thermal energy, comprising at least one storage block (110) having a longitudinal axis (111) and made of heat-storing material, which is penetrated by at least one fluid guide channel (131), and with a heating device for heating the storage block (110), wherein the thermal device further comprises a heat dissipation device with a conveying device for passing a thermofluid through the at least one fluid guide channel (131) in order to transfer thermal energy from the storage block (110) to the thermofluid and to transport it out of the storage block (110) via the thermofluid in order to supply the thermal energy to a heat consumer.

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 utility model relates to a drying facility which comprises two hydrodynamic pads which are arranged on the two sides of a strip in a face-to-face mode, the strip is configured to advance between the two hydrodynamic pads in the limited advancing direction from upstream to downstream, the length of each hydrodynamic pad extends in the width direction of the strip, and the width of each hydrodynamic pad is larger than the width of the strip. The fluid dynamic pad is configured to follow a clamping plane transverse to the strip during advancing of the rolled strip to be applied with mutually facing pressure on both sides of the rolled strip, the fluid dynamic pad is configured to slide on the rolled strip through a fluid layer, and the fluid dynamic pad is configured to slide on the rolled strip along with the clamping plane transverse to the strip. The utility model relates to a device for drying a strip, comprising:-at least one hydrodynamic pad, each configured to perform a first drying operation by blocking at least a portion of a lubricating layer of the strip from upstream to downstream,-at least one suction hole, downstream of said hydrodynamic pad, configured to suck in at least a portion of a residual lubricating layer, thereby performing a second drying operation on said strip.

A system suitable for collecting and transporting urine away from the body of a person or animal may include an assembly having a fluid impermeable casing having a fluid reservoir at a first end, a fluid outlet at a second end, and a longitudinally extending fluid impermeable layer coupled to the fluid reservoir and the fluid outlet and defining a longitudinally elongated opening between the reservoir and the outlet. The assembly can further include a fluid permeable support disposed within the casing with a portion extending across the elongated opening, and a fluid permeable membrane disposed on the support and covering at least the portion of the support that extends across the elongated opening, so that the membrane is supported on the support and disposed across the elongated opening. The assembly can further include a tube having a first end disposed in the reservoir and a second, fluid discharge end.

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 technical field of mixing equipment, in particular to a mixing device for a fluid generator of a selective catalytic converter, comprising: a mixing cylinder having a mixing cavity, 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 scraping plate is fixed on the first material pipe, and a mixing blade is mounted on the second material pipe; the purifying mechanism is used for removing impurities in the fluid, the purifying mechanism is arranged in the air outlet channel, the second material pipe rotates to drive the mixing blades which are spirally arranged to generate a strong stirring effect, the flowing path of the fluid in the mixing barrel is increased through spiral arrangement, exchange and mixing between different fluid layers are promoted, and the mixing effect of the fluid is improved. The L-shaped scraping plate can scrape the inner wall of the mixing barrel, so that the fluid is effectively prevented from depositing or scaling in the mixing process; and through the design of the purification mechanism, impurities in the fluid can be removed, and the cleanliness of the product after the reaction is improved.

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 present application relates to a thinning device and method. The thinning device includes: a polishing platen for carrying a wafer, the polishing platen being rotatable about an axis; a grinding wheel disposed above the polishing platen, the grinding wheel being used for vertically feeding to act on the wafer to grind the wafer; and a magnetorheological fluid layer located below the polishing platen and connected to the polishing platen; establishing a damage function model of wafer damage; based on the collected vibration acceleration signals and the damage function model, determining the grinding wheel rotation speed, the grinding fluid flow rate, the grinding fluid supply flow rate, the grinding fluid injection angle, the grinding wheel feeding pressure, the polishing platen rotation speed, the magnetorheological fluid regulation pressure, and the magnetorheological fluid support stiffness, and applying them to the next wafer processing. By adjusting the parameters, the wafer damage layer is reduced and the wafer quality is improved.

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.

The utility model discloses a noise reduction fan current collector, which relates to the technical field of centrifugal fans, and comprises a volute, an impeller is arranged in the volute, an air inlet is arranged on the volute, a current collector is arranged in the air inlet, and the impeller, the air inlet and the current collector are coaxially arranged. The flow collector comprises a mounting seat and a hollow flow guide cylinder arranged on the mounting seat; an annular flow guide groove is formed in the outer wall of the flow guide cylinder, an annular step groove is formed in the inner wall of the flow guide cylinder, a noise reduction layer is arranged in an interlayer of the flow guide cylinder, and honeycomb holes are formed in the noise reduction layer; the flow guide grooves can disturb airflow entering the flow collector, a laminar fluid layer attached to the surface of the flow collector is damaged and changed into turbulent flow, the purpose of flow separation in advance is achieved, large vortexes are avoided, meanwhile, the noise reduction layer is arranged in the interlayer of the flow guide cylinder, honeycomb holes are formed in the noise reduction layer and can reduce the penetrating power of noise, and the noise reduction effect is improved. Aerodynamic noise can be reduced, and the tone of air inlet noise is reduced.

The invention relates to a thinning device and method, and the device comprises a grinding disc which is used for bearing a wafer, and the grinding disc can rotate around a shaft; the grinding wheel is arranged above the grinding disc and is used for feeding and acting on the wafer in the vertical direction so as to grind the wafer; the magnetic fluid layer is positioned below the grinding disc and is connected to the grinding disc; establishing a damage function model of wafer damage; and based on the collected vibration acceleration signal a (t) and the damage function model, the rotating speed w of the grinding wheel, the flow velocity vt of the grinding fluid, the supply flow Qt of the grinding fluid, the spraying angle theta j of the grinding fluid, the feeding pressure Pg of the grinding wheel, the rotating speed wcarrier of the grinding disc, the adjusting pressure Pm of the magnetic fluid and the supporting rigidity Km of the magnetic fluid are determined and applied to next wafer machining. The wafer damage layer is reduced by adjusting parameters, and the wafer quality is improved.

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.

The invention relates to the technical field of flexible connecting pipelines, and discloses a fluid supporting hose which comprises a corrugated pipe, the corrugated pipe is a thin-wall shell, the two ends of the corrugated pipe 1 are fixedly connected with connecting pipes respectively, the outer side of the corrugated pipe is coated with a fluid layer, and the fluid layer 3 is fixedly connected with the connecting pipes. The fluid layer is connected with a pressure balancing device, the fluid layer is communicated with one end of the pressure balancing device, the other end of the pressure balancing device is communicated with the corrugated pipe, the outer side of the fluid layer is coated with a woven layer, and the two ends of the woven layer are fixedly connected with the connecting pipe; the flexible pipe has a smaller bending radius, the bending fatigue life is effectively prolonged, the braided layer is prevented from being separated from a pressure-bearing state, and the flexible pipe still has good pressure-bearing capacity in an extremely-small bending state.

The present invention proposes a PD-FEM-FVM efficient simulation and analysis method and system for engineering rock mass stress-seepage coupling, comprising: establishing corresponding size models for the solid layer and the fluid layer respectively according to actual engineering; applying initial boundary conditions to the entire established model; calculating the solid layer and the fluid layer respectively based on the applied initial boundary conditions, judging whether the bonds of the material points meet the failure conditions according to the displacement of the near-field dynamic material points in the solid layer, recording the local damage, and then describing the fracture of the rock mass; and obtaining the flow field distribution of the entire model according to the pressure of the FVM control body in the fluid layer, thereby performing efficient engineering-scale simulation of rock mass stress-seepage coupling.

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.

The phase-changed second fluid flows in the second fluid layer (30). The second fluid passage (31) is divided into at least a first flow passage section (R1) and a second flow passage section (R2) different from the first flow passage section (R1) by at least one fold-back structure. The first flow path section (R1) is located on the condensation outlet side or the evaporation inlet side. The flow path cross-sectional area of the first flow path section (R1) is smaller than the flow path cross-sectional area of the second flow path section (R2).

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.

The invention discloses a non-contact ultrasonic hardness testing device for alloy steel materials, and relates to the technical field of alloy steel material testing, the non-contact ultrasonic hardness testing device comprises a support, the support is rotatably connected with two rotating rollers through bearings, the outer sides of the rotating rollers are sleeved with a transmission belt, and the two rotating rollers are in transmission connection through the transmission belt; the upper surface of the support is fixedly connected with a fixing frame, the fixing frame is provided with a detection mechanism, and the right side of the detection mechanism is provided with a collection mechanism. The device is provided with a feeding pipe, so that a coupling agent forms a uniform fluid layer on the surface of a steel material, the fluidity is improved through heating of a heating pipe, and it is guaranteed that the coupling agent uniformly covers the surface of the steel material; meanwhile, detection errors caused by uneven coupling agents are reduced, the operation process is simplified, frequent manual movement of the steel is avoided, and the ultrasonic detection device has the advantages of being high in practicability and capable of continuously conducting ultrasonic detection on the alloy steel.