14 results about "Acoustic Fluid" patented technology

Provided in the present application is a flow detection chip, comprising: a flow channel, wherein a fluid injected therein contains particles; a hypersonic device, which is disposed at the bottom of the flow channel and is used for generating, in the flow channel, an acoustic fluid effect transmitted to the fluid in the flow channel, such that the particles in the fluid are captured to an acoustic fluid tunnel corresponding to the contour of the hypersonic device and move along the acoustic fluid tunnel to a position corresponding to a tail end of the contour of the hypersonic device to be released, wherein the height of the captured particles in the flow channel when released is closer to the bottom of the flow channel where the hypersonic device is located than the height of the particles in the flow channel before being captured; and a detection apparatus, which comprises a detection portion, wherein the detection portion is disposed at the flow channel downstream of the tail end of the hypersonic device, and is used for detecting a change in a detected parameter when the released particles pass through a detection region corresponding to the detection portion. Further provided are a corresponding hypersonic device and a flow detection method. The present application is a low-cost and high-precision microfluidic scheme available for flow detection.

The invention provides a control device for particles with different particle sizes in a runner, comprising: a runner in which a fluid injected contains particles with different particle sizes; the special ultrasonic device is arranged at the bottom of the flow channel and generates an acoustic fluid effect transmitted to the fluid in the flow channel in the flow channel, so that particles with different particle sizes in the fluid are captured to the acoustic fluid tunnel corresponding to the outline of the special ultrasonic device and move to the position corresponding to the tail end of the outline of the special ultrasonic device along the acoustic fluid tunnel to be released, the moving speed of the particles with the larger particle size is lower when the particles are released, the height position of the particles located in the flow channel is farther away from the center of the flow channel when the particles are released, the height position of the particles located in the flow channel is closer to the bottom of the flow channel where the special ultrasonic device is located, and the acceleration during release caused by the dragging force of fluid in the flow channel is smaller. According to the invention, the motion state quantity of the particles with different particle sizes can be stretched, so that the particles with different particle sizes can be distinguished based on detection of the motion state quantity.

The invention relates to the technical field of wind power generation equipment, and discloses an integrated intelligent cooling and lubricating system for a gearbox of a wind generating set, which comprises a main circulating pump set, a heat source distribution subsystem, an adsorption type refrigeration subsystem, a jet flow execution subsystem and an acoustic liquid feedback control subsystem. The main circulating pump set extracts high-temperature lubricating oil, the high-temperature lubricating oil is distributed to the adsorption type refrigeration subsystem through a bistable fluid reversing valve in the heat source distribution subsystem, and refrigeration circulation is driven by oil waste heat. The cooled lubricating oil enters the fluid oscillation nozzle, and the generated pressure pulsation frequency changes along with the viscosity change of the lubricating oil. When the oil temperature rises to enable the pulsation frequency to be matched with the inherent frequency of an acoustic liquid resonance tube in the acoustic liquid feedback control subsystem, the acoustic liquid resonance tube resonates and transmits amplified pressure waves to a control port of the bistable fluid reversing valve, and flow path switching is triggered. The self-adaptive thermal management can be realized without electric control by utilizing the thermal viscosity acoustic liquid coupling characteristic of the fluid.

The invention discloses a dual-chip acoustic fluid platform device for reconfigurable particle control, and the device comprises a radio frequency signal source which is used for generating a radio frequency signal; the power amplifier is used for amplifying the radio frequency signal; the input end of the sound wave device is connected with the output end of the power amplifier, and the sound wave device is used for receiving the amplified radio frequency signal and then generating sound waves; the silicon chip is arranged above the acoustic wave device through a coupling medium and comprises a silicon substrate and a micro-column array arranged on the silicon substrate, and the acoustic waves are coupled to the silicon chip through the coupling medium and spread in the silicon substrate to drive the micro-column array to generate vibration; and secondary acoustic radiation force generated by vibration of the micro-column array is used for capturing and arranging particles. Flexible reconstruction of a sound field and diversified patterning control of particles are achieved through the detachable and replaceable micro-column array on the silicon chip, physical separation of a sound wave device and a sample unit is achieved at the same time, cross contamination is avoided, and the use cost is reduced.

A downhole acoustic tool includes a tool body comprising a plurality of mass bodies connected via one or more spring bodies for forming an acoustic body. A plurality of acoustic receivers are positioned around the tool body on at least some of the plurality of mass bodies. The downhole acoustic tool includes an enclosure surrounding the tool body and the plurality of acoustic receivers, and an acoustic fluid contained within the enclosure, at least some of the acoustic fluid being positioned between an inner surface of the enclosure and the plurality of acoustic receivers.

The application relates to a particle sorting device and method, which comprises a microfluidic channel, a bulk acoustic wave device, two first surface acoustic wave resonators located outside the microfluidic channel for generating a standing wave with two nodes in the microfluidic channel, the two nodes being located at the same positions as the acoustic fluid tunnels of the two side edges of the bulk acoustic wave device to enhance the effect of the acoustic fluid tunnels of the two side edges on capturing particles; two second surface acoustic wave resonators located outside the microfluidic channel downstream of the bulk acoustic wave device for generating a standing wave with one node in the microfluidic channel to move part of the particles released at the end of the bulk acoustic wave device to the node position; the particles released at the end of the bulk acoustic wave device and not moved to the node position generated by the two second surface acoustic wave resonators flow to a first sub-channel, and the particles released at the end of the bulk acoustic wave device and moved to the node position generated by the two second surface acoustic wave resonators flow to a second sub-channel. The application can improve the sorting performance of particles.

The invention discloses an ultrasonic probe, an ultrasonic probe control method and an ultrasonic imaging device.The ultrasonic probe comprises a shell, an ultrasonic transducer and at least one suction and injection assembly, the shell comprises a first containing space and a second containing space which are isolated from each other, and sound transmission liquid is arranged in the first containing space; the shell further comprises an acoustic window located on the side, away from the second containing space, of the first containing space. The ultrasonic transducer is used for mutually converting an ultrasonic signal and an electric signal, and the ultrasonic transducer is arranged in the first accommodating space; and the at least one suction and injection assembly is arranged in the second containing space, communicates with the first containing space and is used for alternately sucking the sound transmission liquid in the first containing space and injecting the sound transmission liquid into the first containing space. According to the embodiment of the invention, the suction and injection assembly alternately sucks the sound transmission liquid in the first accommodating space and injects the sound transmission liquid into the first accommodating space, so that the sound transmission liquid in the first accommodating space can flow to cool the ultrasonic transducer and the acoustic window.

The invention relates to a water turbine mechanical simulation method and device based on fluid additional mass and a medium, belongs to the technical field of water conservancy and hydropower engineering, and provides a technical scheme for solving the problem that a traditional flow-induced vibration algorithm based on an acoustic fluid unit is low in calculation efficiency. A steady-state flow velocity field in the flow channel and a steady-state flow velocity field pressure mean value are obtained through calculation; calculating the dry mode of the runner in the air to obtain generalized fluid additional mass, and calculating the inherent frequency and vibration mode of the runner in the fluid; performing Fourier spectrum analysis to screen out a main frequency, projecting the main frequency to a dry modal basis, solving a runner vibration generalized displacement equation, and calculating runner dynamic stress through modal superposition and transformation to a time domain; and solving the runner displacement and static stress. According to the method, the frequency domain of the steady-state dynamic response of the runner is calculated in the dry modal space of the runner based on the fluid additional mass, and the degree of freedom of the model is greatly reduced and the number of solving times of the dynamic equation is reduced in combination with Fourier frequency screening.

Examples devices and systems are provided herein for mounting a transducer within a hull of a watercraft. Such devices and systems include a housing that defines an interior volume, a biasing mechanism, and a retractable portion disposed at least partially within the interior volume and connected to the biasing mechanism. The retractable portion includes an acoustic element and an acoustic fluid. The retractable portion is biased to a first position from a second position. When the retractable portion is in the first position, the acoustic element is at least partially positioned outside of the hull of the watercraft and aimed in a facing direction to capture sonar return data corresponding to a portion of an underwater environment. When the retractable portion is in the second position, the acoustic element is positioned fully inside the hull of the watercraft so as to protect the device from external elements.

The present application relates to the field of mine gas prevention and treatment, and discloses a sound-liquid synergistic integrated permeability increasing drill rod, which comprises an outer pipe and an inner pipe arranged in the outer pipe, the two ends of the outer pipe are fixedly connected with a male head and a female head respectively, and the female head is connected with a composite drill bit; the pipe wall of the outer pipe is provided with a through hole area, and the through hole area is provided with a plurality of through holes penetrating through; a cavity with a ring-shaped cross section is opened in the pipe wall, an electric telescopic rod and a hatch with a ring-shaped cross section are arranged in the cavity, and the hatch moves up and down in the cavity; one end of the inner pipe is located in the through hole area and is sealingly connected with an ultrasonic transducer, the other end is provided with a cable connector, and the cable connector is connected with a cable core; the cable of the ultrasonic transducer is electrically connected with the cable connector through the cavity of the inner pipe; the present application can realize sound-liquid synergistic permeability increasing of the coal seam, the advantages of the permeability increasing measures are complementary, the two can synergistically increase the flow, the permeability of the coal seam is increased, the gas extraction rate of the coal seam is improved, and the drill rod does not need to be repeatedly connected and disconnected during the permeability increasing drilling process, the operation is simple and efficient during the construction process.

This invention proposes an acoustic-fluidic microfluidic chip and system, and their applications. The acoustic-fluidic microfluidic chip includes a microporous array chip, a microfluidic channel layer, and a bulk acoustic resonator array chip stacked sequentially along the thickness direction. The acoustic-fluidic microfluidic chip of this invention utilizes acoustic fluid manipulation of micro-objects such as cells or cell secretions, enabling precise capture of micro-objects, in-situ cell culture, and selective recovery. It has advantages such as simple structure, low cost, high throughput, and high integration, and has high application value.

The invention discloses an ultrasonic probe, an ultrasonic probe control method and an ultrasonic imaging device.The ultrasonic probe comprises a shell, an ultrasonic transducer and a circulating assembly, the shell comprises a first containing space and a second containing space which are isolated from each other, and sound transmission liquid is arranged in the first containing space; the shell further comprises an acoustic window located on the side, away from the second containing space, of the first containing space. The ultrasonic transducer is used for mutually converting an ultrasonic signal and an electric signal, and the ultrasonic transducer is arranged in the first accommodating space; the circulating assembly comprises a circulating pipeline and a driver which are arranged in the second containing space, an inlet and an outlet of the circulating pipeline communicate with the first containing space, and the driver is connected with the circulating pipeline and used for driving the sound transmission liquid in the circulating pipeline to flow. The ultrasonic transducer and the sound transmission liquid are arranged in the first containing cavity of the shell, and the circulating assembly is arranged in the second containing cavity, so that the sound transmission liquid flows in the first containing space, and the heat dissipation efficiency of the ultrasonic transducer and the sound window can be improved.

An acoustic fluid-mediated bottom-up bioprinting device for functional organs with an ultrahigh cell density and a printing method are provided, the acoustic fluid-mediated bottom-up bioprinting device includes an array SAW chip, a printing container, a printing platform and a curing light source; the printing container is used for containing a printing ink; the printing platform is able to move upward and downward in the printing ink; the array SAW chip includes a plurality of interdigital electrodes; a central axis of each interdigital electrode deflects from a direction towards a center of the circle; the array SAW chip is in contact with the printing ink and is able to form a focused acoustic flow to aggregate the cells in the printing ink; the curing light source is able to expose a projection into the printing ink above the printing platform and cure the printing ink above the printing platform.

The application discloses a kind of composite hull cap type stiffened laminate panel acoustic vibration prediction model modeling methods, comprising the following steps: obtaining and combing composite hull cap type stiffened laminate panel structure modeling parameter;Laminate panel part is modeled using conventional shell element;Equivalent shell element is used to model large cap profile part;Equivalent beam element is used to model small cap profile part;Cap stiffened laminate panel structure in the transverse and longitudinal cap profile intersection area ignores transition connection;Composite cap stiffened laminate panel structure structural loss factor parameter acquisition;Based on cap stiffened laminate panel equivalent parameter and wave theory, the model is meshed;Acoustic fluid domain grid is established, and acoustic infinite element far field boundary and fluid-structure coupling boundary are defined.The problem that the modeling of cap stiffened laminate panel, a complex composite structure in ship structure, is difficult to effectively solve is solved, the modeling cost is effectively reduced, and the calculation efficiency is improved.