14 results about "Spiral wave" patented technology

The present application relates to a kind of exhaust duct and integrated air conditioner.The present application provides a kind of exhaust duct, comprising: flexible tube can be compressed or stretched, the flexible tube is spirally wound along the compression or stretching direction to form multiple turns of wave crest and multiple turns of wave trough, reinforcing rib is formed at least one of the multiple turns of wave crest in wave crest portion.The present application forms reinforcing rib structure on the outer surface of one or more turns of wave crest in multiple turns of spiral wave crest portion, so that the exhaust duct greatly reduces steel wire structure or does not need steel wire structure, under the premise of meeting original stretching, bending, compression performance, mold is simple, cost is lower, improve the compression ratio of exhaust duct, the length of the same exhaust duct after stretching is shorter after compression, reduce packing space.

The invention relates to an air-breathing electric propulsion system ground test system and method, and belongs to the field of ultra-low orbit space electric propulsion, and the system comprises a spiral wave plasma source, an incoming flow parameter measurement device, a tested air-breathing electric propulsion system, a micro-thrust frame, a vacuum system, a gas cylinder and a micro-thrust frame measurement system. A gas cylinder is used as a gas source to generate simulated incoming flow through a spiral wave plasma source, the simulated incoming flow enters a tested air-breathing electric propulsion system, the thrust of the tested air-breathing electric propulsion system is calculated by measuring net thrust, and then specific impulse is calculated. The spiral wave plasma source is used for generating rarefied gas plasma incoming flow equivalent to neutral gas incoming flow, incoming flow with different track heights and different component contents can be simulated by adjusting flow, power, magnetic field intensity and the like, and performance verification of the air suction type electric propulsion system is achieved by measuring net thrust.

This application provides a linear phase modulation method and system based on a linear receiving array, aiming to solve the problems of traditional underwater acoustic imaging systems being complex, having low resolution, and being unable to image moving targets in real time. The method uses an angular domain bandpass filter to filter and linearly phase-modulate the echo signal of a uniform acoustic wave with the same wavefront phase as the transmitted wavefront from the transmitting transducer at the receiving array. Then, through linear superposition, it modulates the wave into a spiral wave with a linear phase to the incident angle of the plane wave in each direction. The system includes a transmitting transducer for transmitting pulses, a linear receiving transducer array for receiving echoes, and an array signal processor for executing the above modulation method. This invention requires only a single sound source and only one transmission and reception cycle to perform real-time high-resolution underwater acoustic imaging of both stationary and moving targets, significantly simplifying the system while generating spiral waves of a much higher order than existing technologies, thereby constructing high-resolution underwater acoustic images.

The invention relates to the technical field of food processing equipment and food processing, in particular to a rapid tissue dehydration device and method based on ultrasonic spiral wave recovery enhancement, the rapid tissue dehydration device comprises a frame and a dehydration tank body arranged on the frame, one side of the frame is provided with an opening and closing door, the opening and closing door is provided with an observation window, and the frame is arranged on supporting legs; a water outlet is formed in the bottom of the dewatering tank body, and a flow guide groove is formed in the side wall of the dewatering tank body and used for guiding dewatering liquid to the water outlet; a guide rod is arranged in the dehydration tank body, and the guide rod penetrates through a through hole in the pressing plate to guide the pressing plate so as to apply downward pressing constraint to food in the dehydration tank body; a communicating pipe is arranged at the top of the frame, the communicating pipe is communicated with a cleaning ball head through a connecting pipe, and the cleaning ball head is arranged at the upper part in the dehydration tank body; a spiral wave sound field is formed through phase difference driving of the multiple ultrasonic transducers, a recovery enhancement control strategy is adopted, migration and discharge of liquid in tissue are promoted, and the dehydration efficiency and uniformity are improved.

The invention relates to the technical field of miniature power generation, in particular to an integrated miniature permanent magnet direct drive generator which comprises an air duct shell, a turbine, a permanent magnet power generation part, a flow field monitoring module and a control unit. The inner wall of the air duct is designed into the composite curved surface with the specific spiral waveform and the axial shrinkage, and key shape parameters of the air duct are accurately matched with pneumatic design points of the turbine, so that airflow is accelerated by the Venturi effect when passing through the air duct; the controllable spiral upheaval structure continuously endows tangential momentum consistent with the rotating direction of the turbine, meanwhile, the optimal pneumatic matching state is dynamically maintained based on real-time monitoring and load closed-loop control of the outlet rotational flow strength, in addition, early warning of performance degradation of the air duct is achieved through monitoring of characteristic pressure distribution, and the performance of the air duct is improved. The problem that the power generation efficiency is reduced due to mutual interference of airflow caused by the adoption of a plurality of independent flow guide mechanisms connected in parallel is effectively solved.

The invention relates to a high-power spiral wave plasma source device, and belongs to the technical field of plasma sources. According to the device, water-cooling flanges with different designs are combined with inner and outer quartz tubes to form three water-cooling passages which can be independent or connected in series, and a water-cooling spiral wave antenna is adopted. The interior of the inner quartz tube can be tightly connected with a high-vacuum device connected with the device, working medium gas conveying is completed, and the problem that the vacuum degree is reduced due to overheating of the connecting position is solved; the quartz tube is broken due to overheating; ohm heating is serious, so that the temperature of the antenna rises, and high-power long-time steady-state operation of the spiral wave source is difficult to achieve. Meanwhile, the supporting component is arranged to ensure safety and stability of the quartz tube. The device can support long-time hour steady-state discharge of different gases under the conditions of low air pressure (10 <-1 > Pa) and high power (20 kW), and provides a reliable high-density plasma generation source for research on interaction between plasma and wall materials.

The invention relates to the technical field of electromagnetic communication, and provides a plasma optical fiber system based on bright core mode spiral wave discharge. The plasma optical fiber system uses bright core mode spiral wave plasma as a waveguide medium, is free of solid materials, and can resist high temperature, vacuum and strong cosmic radiation; meanwhile, the gradient-controllable plasma density profile can cover wide frequency bands such as radio frequency, microwave and even terahertz; by adjusting the radio frequency power, the magnetic field intensity and the gas flow on line, transmission windows can be switched in real time, the guided wave mode can be controlled, the waveguide path can be reconstructed, the dynamic adjustability is extremely high, and an innovative, efficient and highly-integrated solution is provided for aerospace communication, remote energy transmission and multifunctional waveguide application in an extreme environment.

The invention relates to an acoustic online detection device and nondestructive detection method for hidden cracks on the surface of an egg based on helical ripple multi-dimensional excitation, and the device comprises an excitation sound production mechanism which is configured to push the egg to contact and collide so as to excite and generate sound waves, comprising a poultry egg pushing mechanism used for pushing poultry eggs to roll and a corrugated array mechanism used for making contact and colliding with the poultry eggs, the poultry egg pushing mechanism pushes the poultry eggs to make contact and collide with the corrugated array mechanism, and an included angle is formed between the direction of the contact track of the corrugated array mechanism and the poultry eggs and the moving direction of the poultry eggs; the sound wave collection mechanism is configured to collect sound waves excited by the poultry eggs and the ripple array mechanism; and the signal processing equipment is configured to receive the sound wave information acquired by the sound wave acquisition mechanism and detect and determine whether cracks exist on the surfaces of the poultry eggs or not according to the acquired sound wave information. The device can perform recessive crack detection on the three-dimensional surface of the eggshell of the poultry egg, the distribution of excitation points shows a remarkable spatio-temporal evolution characteristic, and along with the increase of a rolling period, contact points dynamically migrate and expand towards two poles (sharp ends and blunt ends) of the poultry egg along a spiral track, so that the detection accuracy is improved. The method fundamentally relieves the problem of detection blind areas caused by limited areas for detecting the hidden cracks, so that the hidden cracks on the surfaces of eggshells on the two sides of the sharp end and the blunt end of the poultry egg can be detected, the detection rate of poultry egg crack detection is improved, misjudgment is avoided, and the method shows relatively high adaptability in the actual application process and is suitable for popularization and application. The method can be used for egg quality detection and grade evaluation.

This application discloses an integrated tachycardia diagnosis and treatment device. This device integrates three-dimensional imaging and high-intensity focused ultrasound therapy on the same platform through a dual-mode phased array ultrasound transducer. Then, based on the Jacobian determinant vector method of topological current theory, it achieves high robustness, high precision positioning and direction identification of the three-dimensional spiral wave singularity. Next, it constructs a ring-shaped focused sound field around the singularity through the iterative angular spectrum method to compensate for the sound field distortion caused by rib obstruction. Combined with the real-time motion trajectory of the spiral wave, it achieves full-dimensional adaptive planning of the treatment path. Finally, the control module realizes the closed-loop collaborative work of each module. It achieves non-invasive diagnosis and treatment of tachycardia through non-invasive ultrasound technology, avoiding the safety risks of invasive operation and implantable devices. At the same time, through precise positioning, adaptive focusing and closed-loop control, it significantly improves the accuracy, effectiveness and safety of tachycardia treatment.

The application discloses a disc-shaped double helical wave manipulation dynamic vibration absorbing structure and belongs to the technical field of equipment vibration reduction. The disc-shaped double helical wave manipulation dynamic vibration absorbing structure is designed in a variable thickness mode. The propagation speed of elastic waves gradually decreases with the decrease of the thickness. The vibration amplitude is concentrated at the position where the thickness of the variable thickness region of the disc-shaped double helical wave manipulation dynamic vibration absorbing structure is the thinnest. A small amount of viscoelastic damping material is combined at the edge position, so that the vibration energy is dissipated as heat energy, thereby achieving the purpose of vibration reduction. In addition, due to the disc-shaped double helical wave manipulation dynamic vibration absorbing structure, the full-band resonance peak of the controlled structure is efficiently suppressed, and the weight of the vibration reduction structure is reduced, and the installation space of the structure is compressed. The dynamic vibration absorbing effect and the overall loss factor of the structure are increased by improving the modal density and the loss factor density, so as to provide a novel vibration reduction structure for efficiently reducing the vibration of the covering structure in the full-band high, medium and low frequency range.

The invention provides a three-dimensional sound source positioning imaging method, device and equipment based on a two-dimensional convex array and a medium, and the method comprises the steps: obtaining a time domain signal p (r, phi, y, t) passively received by a two-dimensional convex array ultrasonic transducer in a sound velocity non-uniform medium, the array elements of the two-dimensional convex array ultrasonic transducer are distributed on a cylindrical surface, and a cylindrical coordinate reference system is (r, phi, y, t); r is the extrapolation radius of the probe of the two-dimensional convex array ultrasonic transducer, and R is the distribution surface where the array elements of the convex array ultrasonic transducer are located; according to the time domain signal p (r, phi, y, t), determining the sound velocity distribution of a propagation medium, and generating an aligned sound velocity diagram to determine the slowness u (r, phi, y) of the medium; the time domain signal p (r, phi, y, t) is converted in the time t, the circumferential direction phi and the longitudinal direction y, a spiral wave spectrum Pn (r, ky, omega) is generated, omega represents the time angular frequency, n is the circumferential wavelength, and ky is the longitudinal wavelength; and according to the spiral wave spectrum Pn (r, ky, omega) and the medium slowness u (r, phi, y), determining a frequency domain sound field of a next layer, and according to the frequency domain sound field, generating a passive sound image I (r, phi, y). The scheme can accurately position the sound source.

1. The name of the design product: flat spiral wave spring. 2. The use of the design product: the design product is a spring that supports and buffers. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

This invention discloses a processing method for a planar spiral wave spring, comprising: a rounding adjustment mechanism including a rounding channel and an adjustment component, the adjustment component controlling the rounding radius to process the raw material into a spiral wave structure; a wave forming mechanism including a first driving source and a forming component, the forming component being used to form the peaks and troughs of the spiral wave structure; a cutting mechanism including a cutting blade, the cutting blade performing cut-off; and a control mechanism controlling the processing steps of the rounding adjustment mechanism, the wave forming mechanism, and the cutting mechanism through an algorithm; the planar spiral wave spring includes a starting end and a ending end, the radius of the starting end and the radius of the ending end are not equal, the planar spiral wave spring has at least one coil, and the peaks or troughs corresponding to two adjacent coils of the planar spiral wave spring are located in the same radial direction; the planar spiral wave spring has high material rigidity and uniform forming stress distribution, and is mainly used in application scenarios with small axial space, large radial space, high stiffness, short stroke, and large axial force.

The invention belongs to the technical field of cutting steel wire production equipment, and particularly relates to a three-dimensional waveform cutting steel wire production system and method. The production system comprises a pay-off assembly, a take-up assembly and a driving assembly, and a steel wire is wound on the take-up assembly after being sequentially processed by the straightener and the deformation assembly. The deformation assembly is composed of mutually-meshed deformation gears, the rotating assembly drives the deformation assembly to rotate around the axis of a steel wire to form a three-dimensional spiral waveform, and the driving assembly achieves synchronous driving through gear and belt transmission. According to the production method, independent control over the spiral radius and the thread pitch of the finished steel wire is achieved by adjusting the distance between the deformed gears and the tooth number of the gears, the parameter adjusting process is more accurate, and finished steel wire structures of different specifications can be flexibly customized according to machining requirements; therefore, the problems that an existing plane waveform cutting steel wire structure is fixed in parameter and difficult to meet diversified cutting performance requirements are effectively solved.