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103 results about "Wave pressure" patented technology

Definition of pressure wave. : a wave (such as a sound wave) in which the propagated disturbance is a variation of pressure in a material medium. — called also P-wave.

Ship cabin indoor explosion structure damage evaluation method based on equivalent scale model

The invention discloses a ship cabin indoor explosion structure damage evaluation method based on an equivalent scale model. The ship cabin indoor explosion structure damage evaluation method comprises the following steps: obtaining an impact wave pressure curve and a quasi-static pressure curve of explosion of equivalent filling in a scale cabin by adopting a pressure sensor; processing test data to obtain a pressure peak value and corresponding pressure impulse; determining a damage rule of the explosion in the equivalent cabin according to the positive pressure acting time of pressure born by the cabin wall and the natural vibration period of the cabin; dividing damage grades and determining a structure damage threshold value of the equivalent cabin; and evaluating damage effects of a ship cabin structure by taking the structure damage threshold value as the basis. The invention provides the ship cabin indoor explosion structure damage evaluation method based on the equivalent scale model by taking a ship cabin indoor explosion effect scale equivalent model as a test carrier, so that the testing cost can be reduced, the researching period is shortened, and the development and application of anti-ship weapons are effectively supported.
Owner:XIAN MODERN CHEM RES INST

Oscillating water column wave energy converter incorporated into caisson breakwater

A caisson breakwater provided with vertical duct 2″, room 3″, air-duct 4″, self-rectifying turbine 5″. Under the fluctuations of wave pressure on the outer opening 6, the water, alternately, enters and exits, so that the air in room 3″, alternately, is compressed and expands, and an alternate air flow is produced in the air-duct 4″. The vertical duct 2″ and the room 3′, form a U-conduit, and the air in the room 3″ acts as a spring. The eigenperiod of oscillations in said U-conduit grows as the width of the vertical duct 2″ is reduced and / or the length of said vertical duct is increased, and / or the width and height of the room 3″ is increased. The eigenperiod is fixed close to the wave period of the waves which convey the largest amount of wave energy in a year, so as to absorb a very large quantity of wave energy.
Owner:BOCCOTTI PAOLO

Manganin pressure sensor and device for measuring underwater explosion near-field impact wave pressure

The invention provides a manganin pressure sensor and a device for measuring underwater explosion near-field impact wave pressure and belongs to the technical field of underwater explosive impact measuring. A sensitive element is clamped between two copper-coated thin plates, so that integral structural strength of the sensor is improved, and service life of the sensor is prolonged. The manganin pressure sensor has high anti-interference capability and can resist interference caused to near field measuring by products caused by explosive blasting, residual electric field in water and outside electromagnetic field, and probability is provided for realizing accurate measuring of underwater explosion near-field impact wave pressure.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Air wave pressure therapeutic apparatus

The invention discloses an air wave pressure therapeutic apparatus. The air wave pressure therapeutic apparatus comprises a host machine, multi-cavity air bags and air connecting pipes for connecting the hose machine with the multi-cavity air bags. The host machine is connected with the multi-cavity air bags through the air connecting pipes into a whole. An air wave control circuit, an input module, an output module, a displaying module and a power module are arranged in the host machine. The input module, the output module, the displaying module and the power module are connected with the air wave control circuit. A power indicator lamp, a displaying device, an adjustment knob, mode selecting buttons, an external connection power input jack and a power switch are arranged on the front face of the host machine. According to the air wave pressure therapeutic apparatus, due to sequential repeated inflating and deflating of the multi-cavity air bags, the circulating pressure on limbs and tissues is formed, even and sequential pressing is carried out on the portions from the far ends of the limbs to the near ends of the limbs, the effects of promoting flowing of blood and lymph and improving microcirculation are achieved, thrombi are easily prevented, limb edema is prevented, and multiple diseases related to blood and lymph circulation can be directly or indirectly treated.
Owner:LIANYUNGANG FUYUAN MEDICAL INSTR

Gaseous wave pressure regulator and its energy recovery system

This invention provides a gas wave pressure regulation method and apparatus, gaseous wave pressure regulator (GWPR), associated with a pressure energy recovery system which can be used in the processes of petrochemical and liquid natural gas (LNG) industries to recover the lost energy in a regulating process where a pressure regulation is needed to reduce the pressure level fitting the operating conditions, but the spontaneous temperature is undesirable. The said method and apparatus employ a mechanism creating a unsteady periodic flow by means of gaseous wave resonant interactions to convert the energy between the pressure drop into the form of heat without using any moving parts. The said heat is reused inside the GWPR to eliminate or diminish the temperature drop associated with the pressure regulation. The said pressure energy recovery system comprises a primary GWPR followed by a primary heat exchanger, and a secondary GWPR linked by a secondary heat exchanger operated in series. The GWPR in the present invention consists of a flow rate controlling unit, a flow induction unit, and a pressure energy converting unit. The operation of the GWPR is based on gaseous wave interactions between shock wave in high speed jets and longitudinal oscillation of gas column in resonant tubes by which the pulsating flow production can recover the pressure energy lost in the regulating process.
Owner:HU ZHIMIN

Reverse arc-shaped bulwark and computing method for total horizontal wave force of bulwark

The invention discloses a reverse arc-shaped bulwark. The bulwark comprises a front wall and a square caisson structure, wherein the front wall is of a continuous semicircular-cylinder-shaped arc-shaped wave-ward surface structure, and the square caisson structure is arranged behind the front wall. According to a computing method for total horizontal wave force of the reverse arc-shaped bulwark, computing is performed through the following formulas that P=KPPZ, and the correction factor KP=0.91. The reverse arc-shaped bulwark has the advantages that the reverse arc-shaped bulwark is similar to a straight wall type bulwark in vertical pressure distribution, the position nearby the static water level belongs to triangular distribution, and the position below the static water level belongs to parabolic distribution; according to annular pressure distribution of the reverse arc-shaped bulwark, when a wave crest acts, the wave pressure intensity of central section of each arc is the maximum and decreases with the increase of the angle of each arc; when a wave trough acts, the wave pressure intensities are basically equal and are evenly distributed. A revised Goda formula should be adopted for computing the total horizontal wave force of the bulwark, and computing and analysis show that the total horizontal wave force of the reverse arc-shaped bulwark is about 10% smaller than the wave force of the straight wall type bulwark of the same size.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

In-field calibration device of pendulum type impact wave pressure sensor

In the application, a stepping motor is connected with a worm rod shaft; a worm wheel is mounted on a worm wheel shaft; an electromagnetic clutch is arranged on a rear bearing seat of the worm wheel shaft and is connected with the worm wheel shaft and a pendulum rod shaft; a rotary encoder is arranged on a front bearing seat of the pendulum rod shaft; the rotary encoder and the pendulum rod shaft are mounted together; a pendulum rod is mounted at the tail end of the pendulum rod shaft; a brake block is arranged on the rotary encoder and is mounted at one end of a brake pendulum rod; an eccentric wheel slide block is arranged at the other end of the brake pendulum rod; an eccentric wheel is arranged under the eccentric wheel slide block; one side of the eccentric wheel is connected with an eccentric wheel handle; the brake block is provided with a cam; a cam slide block is mounted on a cam slide block base; the brake pendulum rod is provided with a crank; the crank is connected with a connecting rod; a slide block is mounted at the other end of the connecting rod and is also mounted on a slide block guide rod; and a pressure production oil cylinder is arranged at the other end of the pendulum rod. According to a calibration device provided by the invention, the pressure production oil cylinder is impacted through a pendulum to generate half-sine pressure pulse with a peak value range of 0.1MPa-10MPa, so that in-field calibration of an impact wave pressure sensor is realized.
Owner:南京卓砾智测控技术有限公司

Effect target device for shock wave pressure measurement of target of moving explosive field

InactiveCN107966227ASolve the measurement problem of large shock wave pressure variation rangeLarge rangeMeasurement of explosion forceShock waveWave pressure
The invention discloses an effect target device for shock wave pressure measurement of a target of a moving explosive field. The effect target device is characterized by comprising a base, an intermediate body, a response diaphragm, a cover plate, a sealing hole, a pressure leading hole, compression bolt holes, compression bolts, an auxiliary hole, and an auxiliary plate. When an external shock wave is applied to the effect target device, the wave is applied to five working areas of the response diaphragm through the pressure leading hole of the cover plate to cause plastic deformation and recession into the sealing hole below; a maximum deflection value is measured; and according to a dose-effect relationship between diaphragm deformation and an impact shock effect, an impact wave pressure peak value is obtained. According to the invention, the effect target device has the following advantages: the effect target device with the light weight is easy to arrange; the sealing performanceis good; the interference of the shock wave diffraction is eliminated; the effective range is wide; the pressure range capable of damaging the target is covered basically; a measurement problem of a large shock wave pressure changing range of the target of the moving explosive field is solved; the precision and reliability of the target pressure measurement in the moving explosive field are improved; and the need of the shock wave pressure measurement of the target of the moving explosive field is met.
Owner:XIAN MODERN CHEM RES INST

Pressure testing device

The invention belongs to testing devices and discloses a pressure testing device. The pressure testing device comprises a pressure induction piece, an inductor outer shell support, an induction spring, an inductor outer shell, a piezoelectric type pressure sensor, a charge amplifier, an electric potential display instrument, a pressure display instrument and wires, and the inductor outer shell is made of explosion-proof material. By the adoption of the design that the inductor outer shell is made of the explosion-proof material, the pressure testing device can perform precise tests on kinds of pressure including overpressure and impact wave pressure, and precision of the pressure tests is ensured through reasonable combination of the piezoelectric type pressure sensor, the charge amplifier, the electric potential display instrument, the pressure display instrument and other instruments.
Owner:张丹丹

Effect target structure for measuring peak value of impact wave pressure of movable target, and testing method

The invention discloses an effect target structure for measuring a peak value of an impact wave pressure of a movable target and a testing method, and belongs to the field of impact wave pressure testing. Specifically, the structure can be used for measuring the impact wave pressure of a blast field of the movable target. The structure mainly comprises a pressure response membrane installation substrate (1), a central body (2), a pressure response membrane (3), a cover plate (4), a pressure response membrane sealing groove (5), a pressure response membrane pressure leading hole (6), a bolt installation hole (7), a compression bolt (8), and a fastening connection hole (9). The invention also discloses a method for measuring the impact wave pressure and mean load of the movable target. According to the invention, the effect target structure is installed on the movable target for measuring the impact wave pressure in a target region, and obtains the impact pressure and mean load of six points in a 500mm*126mm region according to a deformation value of the pressure response membrane (3).
Owner:XIAN MODERN CHEM RES INST

Device for testing combustion performance of power battery

The invention relates to the technical field of battery experimental facilities, and in particular relates to a device for testing the combustion performance of a power battery. The device is characterized in that after a battery is fixed on a test platform, the combustion testing is carried out through a double-way combustion hole, the gas flow can be controlled through a gas valve, further, the flame intensity is controlled, and thus the comparison test requirement on different batteries is met. Meanwhile, explosion impact wave pressure sensors are arranged on two sides of the batteries and in the direction of an anti-explosion valve, so that the sizes of impact waves generated in different directions when the batteries explode are tested, and the combustion performances of the batteries are compared quantitatively. The device can be used for quantitatively comparing the combustion performances of the different batteries; meanwhile, double-way combustion can enhance the testing speed, and increase the efficiency. During the testing process, the batteries can be charged and discharged, and the process that during use of the batteries on a vehicle, some batteries are on fire so as to cause influences on the safety performances of the other batteries under charge and discharge is simulated.
Owner:HEFEI GUOXUAN HIGH TECH POWER ENERGY

Wave pressure based method for measuring wave parameters and tide level of sea-spanning bridge construction sea area

The invention discloses a wave pressure based method for measuring wave parameters and tide level of a sea-spanning bridge construction sea area. The method comprises specific steps as follows: step 1, a test point is selected in the construction sea area, a plurality of wave pressure sensors are annularly arranged on the outer surface of a steel pipe pile located in the test point at intervals, and the wave pressure sensors are located in the position 2-4 m lower than a mean water level of the low tide level; step 2, a wave pressure time travel curve corresponding to each wave pressure sensor is generated according to wave pressure values collected by the wave pressure sensor; step 3, one wave pressure sensor with the maximum wave pressure value in a certain time period is selected as a reference wave pressure sensor, and the wave pressure time-travel curve of the reference wave pressure sensor is taken as a reference wave pressure time-travel curve; step 4, the wave parameters and the tide level are calculated according to the reference wave pressure time-travel curve. The structure is simple, and the method is used for comprehensively measuring the wave parameters and the tide level.
Owner:CHINA RAILWAY BRIDGE SCI RES INST LTD +1

Metal crack repair method

The present invention relates to the field of laser processing, particularly to a metal crack repair method. According to the present invention, mainly based on metal device surface cracks, a microcapsule adhesive is used to fill the crack, and then a laser shocking peening method is used to repair the metal surface crack, wherein a repair agent microcapsule and a curing agent microcapsule are completely mixed according to a volume ratio of 15:2 to prepare the microcapsule adhesive; when the laser shocking peening is performed on the metal crack filled with the microcapsule adhesive and the surrounding area, the capsule wall of the microcapsule adhesive is broken under the effect of the laser shocking wave pressure and the repair agent and the curing agent outflow so as to adhere the crack and achieve the ideal adhesion effect; with the laser shocking effect, the crack and the surrounding area are strengthened, the surface layer structure is compact, and the mechanical property is significantly improved so as to effectively prevent the crack diffusion and the generation of the new crack; and the dual effect is provided.
Owner:JIANGSU UNIV

Multiple array copper-manganese thin film super high pressure transducer and method for making same

This invention provides an array copper-manganese thin film super-high pressure sensor and its process method and its characters are that it comprises N pressure sensitive parts of array structure and thin film copper-manganese 2 and inorganic material sealed film 4 and the sensor adopts all thin film process. The sensor in this invention eliminates seal material high pressure sideway effect, which can make the sensor measurement accuracy at three to five percents and respond time reduces to twenty to forty ns. The sensor in this invention is mainly used to measure strong impact wave pressure such as in the measurement of armor or nuclear weapon explode impact wave pressure.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Surfboard horizontal fin

1. The Horizontal Fin is a marine vessel mechanism. It manufactures propulsion without the use of an engine, moving parts, or fuel. This assistance reduces human paddling labor.2. The Horizontal Fin is also a marine vessel stabilizing mechanism. It accumulates equalizing water pressure to resist equal amounts of side to side wave pressures. Rough water and waves have mercilessly challenged the ability of the surfer to stand or fall. This will significantly “tip” the odds in favor of a successful ride.
Owner:ROUMAN SHERMAN DALE

Parameter optimization method for air wave pressure massager based on deep learning algorithm

The invention relates to a parameter optimization method for an air wave pressure massager based on a deep learning algorithm, relates to parameter optimization methods for air wave pressure massagers, and solves the problems of low accuracy and high retraining cost which are caused by the fact that existing deep learning is only trained once. The parameter optimization method for the air wave pressure massager based on the deep learning algorithm comprises the steps that 1, blood pressure and pulse data of a user is collected; 2, a deep learning structure model is established on a server; 3,a trained deep learning structure model is obtained; 4, the blood pressure and pulse data of the user is collected and input into the trained deep learning structure model, and massage intensity, massage frequency and massage positions of the air wave pressure massager are adjusted according to the output parameters of the air wave pressure massager; 5, the obtained trained deep learning structuremodel is trained through time T to obtain a new model; the deep learning structure model trained in step 4 is replaced with the new model, and step 4 is repeated. The parameter optimization method for the air wave pressure massager based on the deep learning algorithm is applied to the technical field of medical treatment.
Owner:HARBIN INST OF TECH

Dynamic phase demodulation and calibration method for high-reflectance optical fiber F-P chamber hydrophone

InactiveCN103575468ASolving the problem of inability to detect linearlyEliminate demodulation errorsFluid pressure measurementShock waveLinear relationship
The invention provides a high-reflectance optical fiber F-P chamber transient speed variation phase high-speed linear demodulation method which comprises the following steps: measuring a relationship curve between high-reflectance multi-light optical fiber F-P chamber reversed detection interference output and scanning wavelength by using a wavelength scanning method; acquiring the primary physical chamber length of the F-P chamber; selecting central wavelength of three laser light sources according to the relationship curve between the F-P chamber reversed detection interference output and the scanning wavelength; exciting the F-P chamber through the three laser light sources; adjusting the output power of each laser light source; designing and manufacturing a static pressure experimental clamp with a laser wave pressure senor of the F-P chamber, making a static pressure loading experiment, and drawing corresponding relationship curves between the interference output and external static pressure under the excitation of the laser light sources; making a static characteristic calibration experiment by using a demodulator so as to obtain interference output variation phase of the F-P chamber and a linear relationship curve between the external static pressure and the interference output, and furthermore achieve linear calibration on the interference output variation phase of the F-P chamber.
Owner:WUHAN UNIV OF TECH

Power module containing special power terminal

The invention discloses a power module containing a special power terminal, comprising a chip, an insulating substrate, a heat dissipation plate, a power terminal and a shell, wherein the power terminal is welded on the insulating substrate in the manner of soldering or ultrasonic wave pressure welding. Because the power module comprises the power terminal in a special structure, the rigidity and the resistance of the power terminal can be balanced very well, and the reliability of a welding point is increased.
Owner:嘉兴斯达微电子有限公司

Simulation experiment device and method for impact of landslide surges on piers

The invention discloses a simulation experiment device and a simulation experiment method for impact of landslide surges on piers. The simulation experiment device and the simulation experiment methodrelate to the technical field of pier wave pressure impact simulation experiments. The simulation experiment device for impact of landslide surges on piers comprises a water tank, piers, a sliding groove, a side bridge, a high-speed camera, pressure sensors and wave height sensors, wherein bank slopes are arranged on the inner walls of the water tank, the piers and the sliding groove are fixed onthe bank slopes, the side bridge is arranged between the piers and the sliding groove, the plurality of pressure sensors are arranged on the piers, the pressure sensors transmit acquired informationto a PC terminal by means of a multifunctional signal acquisition device, the wave height sensors and the high-speed camera are arranged on the side bridge, the wave height sensors detect the wave heights of surges, and the high-speed camera shoots the climbing of the surges on the piers and the change conditions of waves. By changing the positions of the piers, the simulation experiment device and the simulation experiment method can precisely simulate the geographical environment and distance of a landslide occurred in reality, and can simulate the similarities and differences of landslide impact pressure on the piers in various shapes in reality more flexibly.
Owner:CHONGQING JIAOTONG UNIVERSITY

Ultrasonic wave pressure transducer and air pressure monitoring device

The invention relates to an ultrasonic pressure sensor and an atmospheric pressure monitoring device using the ultrasonic pressure sensor. The ultrasonic pressure sensor comprises a pipe body provided with an air inlet, an ultrasonic transmitter arranged at one end of the pipe body and used for transmitting ultrasonic waves, an ultrasonic receiver arranged at the other end of the pipe body, and an outer shell which contains the pipe body, the ultrasonic transmitter and the ultrasonic receiver. The ultrasonic receiver receives an ultrasonic wave transmitted through air in the pipe body, and according to the received ultrasonic wave, outputs sinusoidal voltage, the amplitude of which is in proportion with the atmospheric pressure in the pipe body. The atmospheric pressure monitoring device can effectively detect barometric fluctuation with the amplitude ranging from 0.1Pa to 50Pa and the frequency ranging from 0.02Hz to 2Hz, and display in various direct-viewing manners the barometric fluctuation with negative impacts on the human body.
Owner:拉尔夫·克林伯格

Water permeability concrete barrier board and preparation method thereof

ActiveCN104402390AImprove permeabilityIncreased permeability coefficientMagnesium phosphateMagnesium orthophosphate
The present invention discloses a water permeability concrete barrier board and a preparation method thereof, and belongs to the field of hydraulic engineering and marine engineering. According to the water permeability concrete barrier board, the large doping amount fly ash cementing material or composite cementing material is adopted as the substrate, the nanometer bentonite modified potassium magnesium phosphate cement protection reinforcing steel bar or FRP bar is adopted as the reinforcement material, the reinforcing steel bar matching and protection surface parameter is calculated according to the used environment, and the water permeability concrete edge beam, the concrete floor protection plate and the water permeability concrete grid are subjected to cast-in-site and partial or whole precast so as to obtain the water permeability concrete barrier board, wherein the surface roughness is increased, and the water permeability effects of the communication hole between the edge beam and the internal of the grid is provided, such that the levee protection surface structure can be endowed with the water permeability energy dissipation, the maximum forward direction wave pressure intensity can be weakened, and the wave climb performance can be limited; and the 28 day compressive strength of the water permeability concrete of the water permeability concrete barrier board is more than 40 MPa, the levee top wave overtopping of the water permeability concrete barrier board is reduced by 15-25% compared with the ordinary barrier board, and the water permeability concrete barrier board can be used for the protection surface structure of the river bank, the sea bank and the training jetty of the sea bank, wherein the integrated precast barrier board can be reused.
Owner:HOHAI UNIV

Integrated device for air wave pressure therapy and dynamic monitoring of pulse and blood pressure

The invention provides an integrated device for air wave pressure therapy and dynamic monitoring of pulse and blood pressure, relates to the field of medical equipment and aims to solve the problem that the function of an existing air wave pressure therapy instrument is monotonous, an electronic sphygmomanometer has difficulty in dynamic measurement of pulse and blood pressure. The inner side of afirst cuff is provided with a first airbag and a second airbag which are parallel, an air outlet passage of a micro air pump is divided into two channels, the two channels are connected with the first airbag and the second airbag through three-way control valves, and an air pressure sensor is arranged on the air outlet passage and used for measuring air pressure in the first airbag or the secondairbag; a main controller is used for controlling the three-way control valve to make the airbags communicate with the micro air pump or the external atmosphere, inflating or deflating of the airbagsis achieved, and the main controller also is used for receiving a pressure signal, calculating the pulse number and blood pressure according to the pressure signal and sending the pulse number and blood pressure to the outside. According to the device, air wave pressure therapy and pulse and blood pressure measurement are combined, and the device is used for massage therapy and dynamic monitoringof health data.
Owner:HARBIN INST OF TECH

Simulation method for pore pressure response of sediment under wave action

Disclosed is a simulation method for the pore pressure response of the sediment under the wave action. Included is a simulation device. The process of the simulation test comprises a preparation stepand a test step. The preparation step is to firstly, determine hydrodynamic parameters and a sediment type according to the requirements of working conditions of the simulation test and then completethe preparation and laying of a sediment sample, equipment installation and connection, the hydrodynamic parameters including the simulated water depth, wave type and wave parameters; and secondly, pre-load a water body in a chamber, turn on a stirring mechanism, pour the sediment sample for the simulation test into the chamber while stirring, add water into the chamber, seal the chamber, and thenstatically consolidate the sediment. The test step includes simulation of the working conditions and data acquisition. The simulation method of the invention improves the accuracy of the water tank test and reduces the error caused by scaling down; and simplifies the complicated wave motion process into the change in the volume of water to control the change in the wave pressure on the surface ofthe seabed, thereby greatly reducing the volume and cost of the traditional water tank.
Owner:THE FIRST INST OF OCEANOGRAPHY SOA +1

Air wave pressure device

InactiveCN108324534AImproving the effect of remote ischemic preconditioningEasy to assemblePhysical therapyWave pressureMassage
The invention provides an air wave pressure device comprising multiple airbag bags; the airbag bag is provided with an air storage chamber on the side close to the human body, and the airbag bag is provided with a flexible air pipe on the other side away from the human body, and an inner wall of the air storage chamber is provided with an interface; one end of the flexible air pipe is provided with an air connecting pipe, wherein an air pipe of one of the airbag bags is detachably inserted into the interface of the other airbag bag; a one-way pressure valve connecting the flexible gas pipe andthe gas storage chamber is installed in the middle of the flexible gas pipe; the airbag bag covering the foot area has the highest gas pressure, and the gas pressure covering the calf area, the kneearea, and the thigh area is sequentially reduced; the airbag bag is also provided with a gas flow valve. The invention realizes the massage effect of inflating and pressing the foot to the calf region, the knee region and the thigh region in order to form a pressure difference, thereby improving the effect of the remote ischemic preconditioning caused by the air wave pressure device.
Owner:浙江健智元生物科技有限公司

Wave power plant

An improved wave energy collecting apparatus comprising a frame (1) including at least one hinged (2) vertically tilting or rotating surface (3), such as a barrier in the form of a panel or a sail, for collecting energy from passing wave pressure fronts via a tilting or rotating motion within the frame (1), wherein the hinge (2) is positioned below the surface of the fluid at the trough of the passing waves, said barrier (3) being connected to a device capable of transforming the tilting or rotating motion into different types of energy, wherein the apparatus is located at a depth such that the tilting or rotating barrier (3) breaks the surface of passing waves at the crest of the waves. Such an apparatus may also include vertically positioned side walls (4) for directing the pressure fronts from passing waves towards the tilting barrier (3).
Owner:LANGLEE WAVE POWER

Centrifugal model test wave cyclic loading simulating device and testing method thereof

The invention provides a centrifugal model test wave cyclic loading simulating device and a testing method thereof. The simulating device is composed of a control part, a drive part and a force output part. An industrial personal computer of the control part is connected with a signal conditioning part through a data collecting card and is connected with a drive power amplifier through an adaptor. A drive power source of the drive part is connected with two exciters through the drive power amplifier. The two exciters of the force output part generates a wave acting force which is exerted to a research target in a non-contact mode through an armature hung on the center of the lower portion of a top cover of a model casing. The two exciters are provided with a horizontal displacement laser displacement sensor and a settling laser displacement sensor respectively. A force sensor is mounted in each exciter, and the output ends of all the sensors are connected with the industrial personal computer. The simulating device can simulate waves which are large in force amplitude and have the waveform being a sine wave (half-wave), can simulate wave pressures and wave suction forces with any proportion, and is long in duration; wave force can be conveniently regulated and controlled, arrangement of geotechnical centrifugal models is facilitated, operation is safe, and precise control is achieved.
Owner:NANJING HYDRAULIC RES INST

Breakwater model with variable slope angle and experimental system of breakwater model

PendingCN109736256AEasy to study stressConvenient research locationHydraulic modelsWave pressureSlope angle
The invention provides a breakwater model with a variable slope angle and an experimental system of the breakwater model. The breakwater model comprises a bottom supporting structure, a stress slope hinged to one end of the bottom structure, a top plate arranged at the other end of the stress slope, and a lead screw, one end of the lead screw is hinged to the stress slope, the other end of the lead screw is fixed to the bottom supporting structure, a through hole is formed in the top plate, and the lead screw penetrates through the through hole. During an experiment, the slope surface can be conveniently subjected to continuous adjustment of any angle from 20 degrees to 90 degrees through the lead screw so as to facilitate researching on the influence of angle change on the wave pressure distribution law, the wave pressure maximum value and the action position of the wave pressure maximum value, meanwhile, the climbing and crushing effects of waves on slopes of different angles can beobserved, and a foundation is provided for breakwater design.
Owner:HARBIN ENG UNIV

Annular slit non-shaped-charge-cover type air gap energy concentration blast charging method based on detonation wave waveform modulation

The invention discloses an annular slit non-shaped-charge-cover type air gap energy concentration blast charging method based on detonation wave waveform modulation. In order to overcome the limitation that a conventional annular energy concentration device needs to be provided with a shaped charge cover and can only be used for special blasting, on the basis of the annular slit detonation wave waveform modulation technology, during common industrial explosive column charge detonation, an annular slit air gap energy concentration mechanism with the unlimited ring number is constructed, column waves different from waves formed by conventional columns charging detonation are generated, multi-stage annular detonation wave air gap energy concentration jet flow is formed along the charge axis, complex impact wave waveforms are generated in rock soil, the impact wave pressure and pulling(shearing) effect is remarkably enhanced so as to enhance the explosive detonation local damage capability, the charge annular explosive energy concentration degree and the adjacent blast hole charge explosive impact wave mutual effect are improved, and the purposes of improving the rock soil breaking effect and increasing the explosive energy utilization rate (or the blast hole utilization rate) are achieved.
Owner:CHINA RAILWAY 18TH BUREAU GRP CO LTD

Liftable type breakwater with power generating function

ActiveCN108179726AIncrease power generationRealize controllable liftingBreakwatersQuaysWater storageWave pressure
The invention discloses a liftable type breakwater with a power generating function. The liftable type breakwater comprises a frame body, a transverse plate, a front wall, a power generating mechanism, a wave pressure sensor, a gas inlet valve, a water valve and a controller, wherein the front wall is fixedly connected with the front end of the frame body; the front wall is of a water permeable structure; the wave pressure sensor is fixedly arranged on the front wall from top to bottom; the transverse plate is transversely and fixedly connected in the frame body for dividing the frame body into an upper chamber and a water storage chamber; the power generating mechanism is fixedly arranged in the upper chamber; the front side wall of the upper chamber is of a gas permeable structure; the gas inlet valve is fixedly arranged in the upper chamber; a gas outlet of the gas inlet valve extends into the water storage chamber; the water valve is fixedly arranged on the water storage chamber; the water valve communicates with the inner part of the water storage chamber; and the controller is separately connected with the power generating mechanism, the wave pressure sensor, the gas inlet valve and the water valve. The liftable type breakwater has the advantages of being simple in structure, high in energy conversion rate and great in power generation amount, and can realize controllabletype lifting of breakwater to regulate elevation of a gas chamber, so that the breakwater reaches relatively high generating capacity to adapt to use under different wave conditions.
Owner:HOHAI UNIV
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