74 results about "Shear flow" patented technology

The invention discloses a jet type micro-droplet generation device and a micro-droplet generation method thereof, and belongs to the technical field of liquid-liquid heterogeneous / homogeneous reaction devices. The device comprises an injection pipe, the injection pipe is used for conveying a first liquid phase, the interior of the injection pipe is of a cavity structure, the injection pipe comprises a feeding section, a mixing section, a diffusion section and a feeding pipe, the feeding section, the mixing section and the diffusion section are sequentially communicated and coaxially arranged, the feeding pipe is used for conveying a second liquid phase, and the feeding pipe penetrates through the side wall of the feeding section and extends into an inner cavity of the injection pipe; a discharging opening of the feeding pipe is formed in the mixing section, and an annular flowing space is formed by the outer wall of the feeding pipe and the inner wall of the mixing section. The feeding pipe extends into the mixing section to form an annular flowing space, and a second liquid phase is dispersed into small liquid drops by fully utilizing the annular space and a strong shear flow field in the mixing section. The method is suitable for a liquid-liquid heterogeneous / homogeneous system, including a liquid-liquid heterogeneous / homogeneous reaction crystallization system generated by solid particles.

The invention discloses a dynamic real-time measurement method and device for the friction coefficient in a rotary shear type granular material, and belongs to the technical field of granular material measurement. The dynamic real-time measurement device for the friction coefficient in the rotary shear type granular material comprises a rotary shear rheological experiment cavity which is connected to a bottom plate through a mounting bracket; the filler is filled with a to-be-detected granular material; the normal load monitoring unit comprises an upper pressure sensor and a lower pressure sensor which are located on the upper portion and the lower portion of the rotary shear rheological experiment cavity, in-situ real-time measurement of the internal friction coefficient of the granular material in the shear flowing process is achieved, and the technical problem that the internal friction characteristic of the granular material is difficult to measure through a traditional method is solved. A cooperative working mechanism of an axial constraint type dynamic loading platform, an annular medium distribution structure and a rotary shear rheological experiment cavity is innovatively designed, shear flow in the granular material is achieved, and the internal friction coefficient of the granular material is measured.

The application relates to a compression-shear composite loading system based on a pulley system multi-point mean loading, and relates to a compression-shear composite loading system. In order to solve the problem that the traditional compression-shear composite loading is prone to uneven shear flow for a large-size composite stiffened wall plate structure, the application applies uniform compression loads to the side end surface loading end of a test piece through compression actuating cylinders and a flat pressing plate; two shear actuating cylinders output leftward shear loads along the upper end surface of the test piece; and the other two shear actuating cylinders output rightward shear loads along the lower end surface of the test piece; the loads are converted in direction through a pulley assembly and finally act on the shear plates on the upper and lower sides of the test piece. The application realizes the test under different compression-shear ratios by simultaneously adjusting the sizes of the compression and shear actuating cylinder forces, and optimizes the problem of uneven shear loading through the multi-point coordinated loading system, so that the shear of the measuring point is uniform, and the strength test of the large-size stiffened wall plate structure can be better satisfied.

The application belongs to the technical field of marine environment monitoring and early warning, and specifically relates to a multi-channel internal wave flow early warning system and an early warning measurement method, which comprises the following steps: a buoy body is fixedly arranged through a fixed anchor, and a marine profile comprehensive detection module synchronously collects multi-dimensional profile data such as flow velocity, temperature and salinity. A main control unit is embedded with a mixed driving early warning model, a phase velocity of an internal wave is solved based on a physical model, a nonlinear correction is performed through a machine learning residual correction module, a high-precision internal wave phase velocity is obtained, and then early warning time, shear flow and displacement amplitude are calculated and an alarm level is determined. Alarm information is redundantly sent to a shore station receiving system through a ground mobile communication link and a satellite communication link of a multi-channel communication module, and the shore station receiving system regularly updates the machine learning model by taking measured data as incremental samples. The application realizes high-precision and low-delay early warning of internal wave flow, has high communication reliability, and is suitable for marine engineering, underwater vehicles and safety guarantee of offshore operations.

This invention relates to the field of polymer material processing and blending technology, and discloses a fiber uniform mixing process in the preparation of bio-based materials. The process includes: controlling the barrel wall temperature of the main dispersion zone of a co-rotating twin-screw extruder to be lower than the intrinsic melting point of the polylactic acid matrix and turning off the external heater; adding jute fiber bundles and the polylactic acid matrix and controlling the screw speed, utilizing the frictional heat balance temperature difference generated by mechanical shearing to maintain the actual melt temperature above the intrinsic melting point; and conveying the mixture to the secondary diffusion zone as the motor drive torque increases, thereby increasing the barrel wall temperature of the secondary diffusion zone and reducing the screw speed to blend the materials. This invention eliminates temperature control lag, maintains a stable shear flow field, avoids a sudden drop in melt viscosity to improve fiber dispersion uniformity, automatically indicates process stage transitions, avoids material thermal degradation, and improves the stability of the mechanical properties of the finished material.

A downhole tool includes a housing, a movable element positioned about the housing, the movable element configured to move between an uphole position and a downhole position, a deployment piston positioned within a deployment piston chamber, the deployment piston shearingly fixed with the movable element via a shear feature. In one or more embodiments, the deployment piston is configured to move the movable element between the uphole position and the downhole position upon receiving a lower actuation fluid pressure on an up hole side or a downhole side thereof. A shear feature having a shear value of 133 Kilonewtons (KN) or less, the shear feature configured to shear and thereby release the movable element from the deployment piston upon receiving a greater shear fluid pressure on the up hole side or the downhole side of the deployment piston.

The presently disclosed subject matter aims to a system and method including a processing circuitry configured to: obtain: (a) a plurality of independent wave measurements of a body of a fluid, obtained over a period of time, wherein each independent wave measurement is acquired at a distinct location of the body of fluid; and (b) a respective ambient shearing current profile, wherein the respective ambient shearing current profile is based on ambient current values and directions, at different locations within the body of the fluid, related to the respective distinct location; based on the wave measurements and ambient shearing currents profile, assess wave directional spectra characterizing flow regime of waves of the body of fluid, while accounting for the effects of the ambient shearing currents during the wave measurements' period of time; and determine, based on the assessed wave directional spectra, one or more design parameters of the maritime infrastructure.

The application provides an alloy solution mechanical and electromagnetic stirring device, and mainly relates to the technical field of die steel smelting. The alloy solution mechanical and electromagnetic stirring device comprises a support frame, a stirring container is fixedly installed on the support frame, a driving motor is fixedly installed on the top of the stirring container, a solution filling hopper is arranged on the top of the stirring container, a support seat is fixedly arranged outside the stirring container, the support seat is fixedly installed on the support frame through bolts, and a buffer pad is arranged between the support seat and the support frame. The application has the beneficial effects that: the application combines mechanical stirring and electromagnetic stirring, can ensure that relative movement between liquid phase and solid phase is generated in different degrees, multi-dimensional shear flow is generated, the breaking, crushing and proliferation of dendrite arms are caused, a large number of dislocations are migrated from grain boundaries to the inside of the crystals, the purpose of refining grains is achieved, the energy consumption requirement in the stirring process can be greatly reduced, and the purposes of energy saving and emission reduction are achieved.

The invention provides a gas-liquid separation device based on stepped bubble breaking. The gas-liquid separation device comprises an outer cavity and a rotating mechanism, the outer cavity comprises an inlet cavity and a liquid bearing cavity; a separation cavity, a bubble breaking element and a transmission shaft are sequentially and coaxially arranged in the liquid bearing cavity from top to bottom, the transmission shaft is fixed below the bubble breaking element and is in transmission connection with the rotating mechanism, and the rotating mechanism drives the bubble breaking element and the separation cavity to rotate synchronously; the top end of the exhaust pipe extends out of the upper end surface of the inlet cavity and exhausts air outwards. According to the invention, a variable super-gravity field is provided, a centrifugal field is dynamically enhanced, bubble breaking and separation processes are coupled, strong breaking of large bubbles and micro bubbles is realized through shear flow-turbulent flow driving, deep separation of membrane liquid drops is enhanced by using a gas-liquid density difference effect, and a high-precision bubble breaking effect is realized.

To provide an instrument which generates a shear flow in a sample and enables NMR lock without affecting the composition of the sample to be measured.SOLUTION: The shear flow generator 10 is an instrument for generating a shear flow in a sample S to be measured in a state of being inserted into a sample introduction hole 91 of a magnetic resonance device 90, and includes a sample tube 1 for storing the sample S to be measured, a stirring tube 2 which is a bottomed tube for storing a reference sample for NMR lock, has a bottomed tip 2a side inserted into the sample tube 1, and applies a shear force to the sample S by rotating around a long axis, and a holding portion 3 for holding both the sample tube 1 and the stirring tube 2.SELECTED DRAWING: Figure 2

The application provides a high-toughness and high-wear-resistance bearing steel as well as a preparation method and application thereof, and belongs to the technical field of high-wear-resistance bearing steel metallurgy.The application realizes the homogenization of the composition in the bearing steel, the small matrix structure and carbide by accurately limiting the chemical composition ratio, adopting a composite shear flow casting technology and a specific heat treatment process, and improves the wear resistance of the bearing steel.The preparation method has strong operability, and the composition is controllable.Compared with a traditional gravity casting process, the composite shear flow casting technology adopted by the application can avoid the composition and matrix structure inhomogeneity caused by the traditional gravity casting, and the heat treatment process can make the matrix structure and carbide small, which is beneficial to simultaneously improving the toughness, hardness and wear resistance, and can be popularized and applied in industry.

The invention discloses a magnetic field-assisted fixed-point polishing device and method for an additive manufacturing fine runner, and the magnetic field-assisted fixed-point polishing device and method are characterized in that a magnetic abrasive flowing through the interior of a workpiece is regulated and controlled through a magnetic field generation device capable of moving and rotating in multiple directions: under the condition of no magnetic field, polishing liquid is driven by high pressure to form a high-shear flow field; uniform cutting of the whole runner is realized through a shear thinning effect; when a specific area needs to be emphatically treated, the permanent magnet is accurately moved and positioned to a target area, magnetic particles can rapidly form a chain structure, liquid is locally solidified, and therefore the shearing force of the liquid is increased, and specific positions such as adhering slag and an under-throwing area of a bent pipe are efficiently and accurately removed; high efficiency and high precision are both considered, flow blockage and thermal runaway risks caused by runner defects can be effectively eliminated, and the reliability and safety of key components in the fields of aerospace, high-energy equipment and the like are remarkably improved.

This invention relates to the field of filtration equipment technology and discloses a multi-channel rapid filtration device based on ceramic filter rods. The device includes a treatment box with a frame at the front center to support the stable entry of wastewater. By adding and setting a filter cake treatment mechanism, when treating wastewater containing suspended solids and colloidal substances, this mechanism, on the one hand, uses a multi-stage filtration design with coarse and fine filter plates to gradually remove suspended impurities of different particle sizes from the wastewater, reducing the total amount of suspended solids entering the ceramic filter rod body and lowering the probability of filter cake formation at the source. Simultaneously, the cleaning door facilitates impurity removal, ensuring long-term smooth operation of the mechanism. On the other hand, the spiral micro-nano guide channels within the ceramic filter rod body guide the water flow to form a shear flow, flushing the inner wall to prevent vertical deposition of suspended solids. Furthermore, the micro-nano rough texture increases the contact gap between the filter cake and the inner wall, reducing filter cake adhesion and effectively preventing filter cake from clogging the filter pores.

This invention relates to an ingate structure for die casting, comprising a gating body, a filtering unit, and a collecting unit, wherein the thickness of the gating body is [missing information]. h 1 = k × w A filtering unit is located at the front end of the gating system to prevent the pre-crystallized structure from flowing to the rear end of the gating system. A collecting unit is located at the front end of the gating system and upstream of the filtering unit to collect the pre-crystallized structure deposited due to the obstruction by the filtering unit. A die-casting method employs the above-mentioned ingate structure and a three-stage injection velocity. This invention can intercept and remove most of the coarse pre-crystallized dendrites; increase flow resistance, generating a high-shear flow field that forcibly mechanically breaks up residual pre-crystallization, achieving secondary homogenization of the structure; significantly reduce defects such as porosity and shrinkage caused by pre-crystallized structure in the casting body, improve the uniformity of the structure, enhance the internal quality and mechanical properties of the casting, increase the casting yield, and reduce production costs.

This invention discloses a microporous fluid control component and fluid processing assembly, relating to the fields of micro / nano fluid control and precision manufacturing technology. It includes a substrate and a flow field control structure. The substrate has a first surface for receiving fluid and interacting with an external shear flow field, and a second surface for discharging fluid. Several main flow channels are disposed on the substrate, penetrating the first and second surfaces. The flow field control structure includes several flow field control subsystems. The solid region of the first surface and / or the inner wall of the main flow channels are provided with flow field control subsystems. Each flow field control subsystem includes multiple micro-fluid interference components with preset three-dimensional geometric shapes. This microporous fluid control component and fluid processing assembly causes shear thinning of the fluid, significantly reducing near-wall viscosity, eliminating stagnant layers, and thus improving the filling efficiency and throughput of the slurry entering the main flow channels.

The invention discloses a raw material stirring device for calcium hydrophosphate production and processing, and relates to the technical field of stirring devices. Comprising a sleeve and a transmission shaft, a first magnetic component and a reciprocating cylinder are sequentially mounted on the sleeve, a second magnetic component is arranged on one side of the reciprocating cylinder, and a first magnetic component and a second magnetic component are arranged on the other side of the reciprocating cylinder. A first stirring blade is rotationally arranged on the other side of the reciprocating barrel. Through vertical movement of the first stirring blades, raw materials at different depths in the tank body can be continuously stirred, a mixing dead zone and a precipitation layer are effectively eliminated, it is ensured that the materials are uniformly distributed in a three-dimensional space, and the device is suitable for a mixing system containing a surfactant. The first stirring blades and the second stirring blades act together to generate efficient turbulent flow and a reverse shear flow field, so that agglomerated particles can be quickly scattered, and the mixing efficiency and the uniformity are further improved, so that the mixing quality and the reaction efficiency are doubly improved.

The present application relates to the turbine disc and compressor disc processing and manufacturing technical field of aero-engine, gas turbine, etc., and discloses a wheel disc mortise broaching force regulation and control method and system, the method comprises the following steps: obtaining broach geometric parameters, broaching process parameters and workpiece material physical properties; based on the broach geometric parameters, the broaching process parameters and the workpiece material physical properties, the shear flow stress on the main shear surface in the cutting process is calculated, and the cutting force considering the strain softening and temperature-strain rate coupling effect is further calculated; based on the broach geometric parameters and the shear flow stress, the edge extrusion force caused by the broach edge roundness radius is calculated; the broaching force and the edge extrusion force are superimposed to obtain the wheel disc mortise broaching force; according to the wheel disc mortise broaching force, the broach geometric parameters and the broaching process parameters are adjusted and controlled, and then the wheel disc mortise broaching force is optimized to meet the actual processing requirements, which provides support for reducing the tool optimization design cost and improving the wheel disc processing quality.

A fluid shear inducer includes a housing defining a primary flow path, a secondary flow path branching from the primary flow path, a return junction connecting the secondary flow path back to the primary flow path, and a fluid accelerator associated with the secondary flow path. A method for shearing fluid includes flowing a fluid into a housing defining a primary flow path and a secondary flow path, branching some of the flowing fluid from the primary flow path into the secondary flow path, accelerating the fluid in the secondary flow path, and impinging the accelerated fluid from the secondary flow path into the fluid in the primary flow path. A fluid system includes a fluid reservoir, a pump operably connected to the reservoir, and a fluid shear inducer fluidly connected to the pump.

The application belongs to the technical field of marine resource development, and is a calculation method for vortex-induced vibration of a deep-sea mining riser under the action of internal waves. According to wave parameters such as the wave amplitude and wavelength of the marine internal waves, the velocity and acceleration distribution characteristics of the flow field are determined to provide load input for the calculation of vortex-induced vibration of the deep-sea mining riser. The marine internal wave flow field has significant particularity, which is different from uniform flow and typical shear flow, and is a kind of non-uniform shear flow. Based on the particularity of the marine internal wave flow field, the vortex-induced load distribution on the deep-sea mining riser under the action of the improved traditional wake oscillator model is obtained. In view of the geometric nonlinearity problem caused by the large slenderness ratio of the deep-sea mining super-long riser and the weak constraint characteristics of the deep-sea mining riser, the rigid body displacement and elastic deformation of the riser are separated and calculated by using the co-rotational coordinate method, so as to improve the calculation efficiency to meet the actual engineering requirements, and form the calculation method for vortex-induced vibration of the deep-sea mining riser under the action of the marine internal waves.

The invention discloses liquid medicine matching equipment for sewage treatment and a use method of the liquid medicine matching equipment, and relates to the technical field of sewage treatment equipment. The device comprises a matching barrel, an inner cavity of the matching barrel is provided with a ventilation stirring assembly, the bottom of the matching barrel is fixedly connected with a base, the ventilation stirring assembly comprises a rotating cylinder, and the rotating cylinder is connected with the top of the matching barrel in a penetrating mode. By combining the rotating stirring blades with the design of releasing gas from the exhaust holes in the bottom of the rotating drum, a mixing environment with the synergistic effect of mechanical force and aerodynamic force is formed, strong shear flow generated by the stirring blades can rapidly break initial cakes of powdery medicaments, and a continuously rising fine bubble net penetrates through the materials, so that the powdery medicaments can be quickly crushed. The double-acting mechanism is used for preventing particles from being agglomerated again and promoting the particles to suspend and diffuse in liquid, so that the problems of non-uniform mixing and insufficient powder dissolution of a single stirring mechanism in the prior art are solved, and the mixing efficiency and the homogeneity of liquid medicine are improved.

The utility model discloses a mixture stirring device which is characterized in that a stirring box is fixedly mounted in an annular frame, a mounting cover is mounted at the top of the stirring box, a feeding hole is formed in the top of the mounting cover, and a stirring main shaft is rotationally connected to the center of the bottom of the mounting cover through a bearing; four auxiliary stirring shafts are rotationally connected to the position, located outside the stirring main shaft, of the bottom of the mounting cover, the rotating directions of the four auxiliary stirring shafts are opposite to the rotating direction of the stirring main shaft, an annular rotating cylinder is rotationally connected into the mounting cover through a bearing, and supporting rods are fixedly connected to the end, located in the stirring box, of the annular rotating cylinder at equal intervals; according to the mixed material stirring device, the stirring main shaft and the four stirring auxiliary shafts are of a reverse rotating structure, so that the stirring main shaft and the stirring auxiliary shafts form a bidirectional shear flow field, the mixing uniformity is greatly improved, blades on the supporting rods forcibly crush road asphalt agglomerated materials in the rotating process, and the scraping plate is linked through the annular rotating cylinder, so that the mixing uniformity is greatly improved. The inner wall of the stirring box is synchronously cleaned in the stirring process, material accumulation is prevented, and manual cleaning frequency is reduced.

The invention discloses a microjet interaction cavity and a homogenizer, and belongs to the technical field of carbon materials. The microjet interaction cavity comprises a shell and a sliding body, the shell is provided with a high-pressure inlet runner and a low-pressure outlet runner, the sliding body is arranged on the shell in a sliding mode, the sliding body is provided with a first impact cavity, a second impact cavity and a plurality of first shearing runners, the first ends of the first shearing runners are connected with the first impact cavity, and the second ends of the first shearing runners are connected with the second impact cavity. The sliding body is provided with a plurality of second shearing flow channels, the first ends of the second shearing flow channels are connected with the second impact cavities, two flow dividing channels are formed at the tail end of the high-pressure inlet flow channel, the sliding body is provided with a connecting channel, and the connecting channel is communicated with the first impact cavity and the second impact cavity and is communicated with the low-pressure outlet flow channel at the same time. According to the micro-jet interaction cavity and the homogenizer, the problem that the production efficiency is affected due to the fact that materials block a shearing runner of the micro-jet interaction cavity can be effectively solved.

The invention discloses a raw material mixing device for carbon fiber rope processing. The raw material mixing device comprises a rack, a cavity is formed in the cylinder wall of the mixing cylinder to form a temperature control jacket; the main stirring mechanism comprises a main stirring shaft rotationally connected to the central axis of the mixing barrel and a plurality of main stirring assemblies detachably installed on the main stirring shaft, and each main stirring assembly comprises a first sleeve and a plurality of main stirring blades fixed to the first sleeve; the auxiliary stirring mechanism comprises an auxiliary stirring shaft rotationally connected into the mixing barrel and a plurality of auxiliary stirring assemblies arranged on the auxiliary stirring shaft in a sleeving mode, and each auxiliary stirring assembly comprises a second sleeve and a plurality of flexible carding pieces fixed to the second sleeve; the driving mechanism is used for driving the main stirring shaft and the auxiliary stirring shaft to rotate in opposite directions. By arranging the main stirring mechanism and the auxiliary stirring mechanism which rotate reversely, a strong convection and shear flow field is formed in the mixing cylinder, the problems of fiber huddling and mixing dead angles are effectively solved, and the mixing uniformity is remarkably improved.

The invention provides a construction monitoring method and system for a corrugated plate steel and concrete combined arch bridge, and relates to the technical field of arch bridge construction monitoring. Introducing a concrete time-varying constitutive model to obtain a time-varying stiffness parameter so as to construct a shear flow theoretical distribution model to deduce a theoretical shear stress form vector, and eliminating monitoring reference deviation caused by stiffness evolution in a concrete hardening process; performing weighted projection operation on an actually measured shear stress distribution vector and a theoretical shear stress form vector by using a local weighting matrix, extracting an orthogonal residual vector and calculating a form variation modulus, and realizing elimination of numerical drift caused by overall load increase and capture of weak local form distortion; and an instability risk index is calculated in combination with theoretical nominal shear stress and geometric parameters of the corrugated web and is compared with a preset instability threshold interval, and the engineering problem that the early buckling precursor is difficult to recognize under the strong background load is solved.

The invention discloses a high shear-vortex cooperative flash flotation machine and a flotation method, and relates to the technical field of mineral processing engineering. According to the flotation machine, a high-shear generating device and a controllable vortex generating device are arranged in a flotation tank, the high-shear generating device generates a strong-shear flow field, and the controllable vortex generating device forms an upward rotating vortex field with adjustable strength; and the rotating speed of the high-shear generating device, the angle of a guide plate of the controllable vortex generating device and the inflation pressure of the bubble generating system are dynamically adjusted based on an AI decision model according to the ore feeding condition. According to the corresponding flotation method, the ore pulp sequentially passes through the high-shear flow field and the stable vortex field through real-time detection and regulation according to the system. The method can adapt to changes of ore feeding conditions, the mineralization stability of coarse-grained minerals is enhanced while the recovery rate of micro-fine-grained minerals is increased, and therefore the flotation efficiency and the stability of production indexes are integrally improved.

This invention discloses an experimental apparatus for separating and purifying biomass pyrolysis oil, belonging to the technical field of pyrolysis oil purification experiments. The apparatus includes a support frame, with the waste inlet located at the crest of a wavy surface. An oscillating tensile peeling component is installed inside the support frame to provide periodic shear force, causing velocity differences and stratification tendencies in biomass pyrolysis oil components with varying flow rates. By employing an oscillating tensile peeling component combined with the wavy curved surface structure of the tank's inner wall, this invention achieves a composite output of rotation and axial reciprocating motion under a single drive source. It constructs a dynamically variable gap high-frequency shear flow field and a periodic tensile peeling force field inside the tank, enabling efficient and continuous separation of light and heavy components in biomass pyrolysis oil without additional auxiliary devices. This effectively solves the problems of low separation efficiency, poor purification effect, high energy consumption, or secondary pollution associated with traditional separation methods.

The invention discloses a low-rate cooling control preparation device for mupirocin ointment, and relates to the technical field of ointment preparation. According to the scheme, the stirring device comprises a support and a tank body which is horizontally arranged on the support and provided with a jacket, the tank body comprises a movable section and fixed sections for rotationally sealing the two ends of the movable section, and the movable section can rotate around the axis of the movable section; comprising a fixed shaft, a stirring sleeve rotationally arranged outside the fixed shaft in a sleeving manner, and a plurality of blades mounted on the stirring sleeve; the driving mechanism is mounted on the bracket and is used for driving the movable section to rotate; and the synchronizing assembly is used for transmitting the rotary motion of the movable section to the stirring sleeve, so that the stirring sleeve and the movable section rotate in opposite directions. A strong two-way shear flow field is formed through autorotation of the tank body and reverse rotation of the stirrer in the tank body, so that the mixing efficiency is improved.

The present application relates to the technical field of oil and gas development, and provides an experimental apparatus and method for simulating long-distance transportation in a deepwater field. The experimental apparatus comprises: a formation oil displacement simulation unit, a wellbore oil production simulation unit, and a subsea gathering and transportation simulation unit, wherein the three units can be communicated with each other by means of piping. The formation oil displacement simulation unit comprises a first core oil holder, a second core oil holder, a gas injection apparatus, and a water injection apparatus, wherein both oil holders can be connected to the gas injection apparatus and the water injection apparatus. The experimental apparatus provided in the present application can realistically simulate the conditions of wellbore oil production and surface gathering and transportation, and can also simulate two production modes, i.e., oil displacement by gas injection and oil displacement by water injection, and two drive modes, i.e., single-pressurization pump drive and pump-free shear circulation drive, thereby solving the problems in conventional apparatuses that a circulation pump repeatedly shears a fluid, destroys the internal structure of the fluid, and affects flow parameters.

The application relates to a preparation method of high-carbon damping vibration reduction steel and a melting and casting device thereof, and belongs to the field of structure-function integrated engineering materials. The application adopts a combined casting mode of vacuum induction melting and centrifugal casting, utilizes a composite shear flow technology, combines subsequent controlled rolling and controlled cooling and heat treatment technologies, and shortens the heat treatment time of the high-carbon damping vibration reduction steel. The application comprises a composite shear flow casting-rolling-heat treatment process. The application can greatly shorten the subsequent graphitization heat treatment time of the vibration reduction steel, optimizes the performance, and saves the cost. The application has important significance for the popularization and application of the high-carbon damping vibration reduction steel.

This invention discloses a multi-stage dynamic composite excitation solid waste roadbed filler treatment device and method, relating to the field of solid waste resource utilization technology. The device includes a pretreatment unit, a metering unit, a mixing unit, and a control unit. The pretreatment unit processes carbide slag, silica fume, excavated soil, and EPS particles, addressing issues such as incomplete agglomeration, incomplete removal of oversized particles, and ungraded EPS particles. In the mixing unit, a first and second stirring shaft are vertically distributed to form a three-dimensional shear flow field, and the material lifting device forms a vertical convection circulation, effectively solving the problem of uneven mixing caused by the low density and easy floating of EPS particles. The control unit enables coordinated control of all units. This device and method can improve the mixing uniformity of solid waste roadbed filler, reduce strength fluctuations, meet the quality requirements of engineering for roadbed filler, and promote the resource utilization of solid waste.