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35 results about "Bernoulli's principle" patented technology
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In fluid dynamics, Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy. The principle is named after Daniel Bernoulli who published it in his book Hydrodynamica in 1738. Although Bernoulli deduced that pressure decreases when the flow speed increases, it was Leonhard Euler who derived Bernoulli's equation in its usual form in 1752. The principle is only applicable for isentropic flows: when the effects of irreversible processes (like turbulence) and non-adiabatic processes (e.g. heat radiation) are small and can be neglected.
Downburst maximum horizontal wind speed diagnosis method and system
PendingCN121302668ADesign optimisation/simulationComplex mathematical operationsBernoulli's principleClassical mechanics
The invention provides a downburst maximum horizontal wind speed diagnosis method and system. The method comprises the steps that the vertical speed and the jet radius of downburst vertical jet airflow in a high-voltage transmission corridor area are obtained; constructing a downburst impingement jet model based on the Bernoulli principle, and obtaining a static pressure difference parameter; establishing a momentum equation based on a momentum conservation law and the static pressure difference parameter; a mass conservation equation is established based on the jet radius and the mass conservation law, and the horizontal flow thickness is obtained; obtaining a diagnosis model formula of the maximum horizontal wind speed according to the horizontal flow thickness and the momentum equation; and determining an efficiency coefficient according to the turbulence energy loss, correcting the diagnosis model formula based on the efficiency coefficient, and obtaining a corrected diagnosis formula of the maximum horizontal wind speed, thereby realizing accurate estimation of the downburst maximum horizontal wind speed, and providing key dynamic support for disaster prevention and reduction of power grid facilities.
Owner:CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD +2
Toroidal, modular, amplified wind power generation system utilizing bernoulli passive wind amplification surfaces and coupled-vortex component positioning of multiple adjustable standalone VAWT turbines and vanes on a passively yawable track
A large-scale, modular, wind power generating structure and system involving a toroidal or ovoidal shaped wind amplification structure / module that can be stacked vertically to form a tower that passively accelerates a wind flow that moves around each of the modules due to the Bernoulli Principle. Each amplification level includes a plurality of vertical axis wind turbine and generator assemblies, fairings, and vanes that form a synergistic system wherein the efficiency of the vertical axis turbine and generator assemblies and the amount of energy that can be produced per module are substantially improved compared to the turbine assemblies operating outside the integrated and amplified wind system.
Owner:V3 TECH
Pharmaceutical container sorting device and production system
PendingCN122343184Aachieve separationReduced sealing requirementsBernoulli's principleStructural engineering
The application discloses a kind of pharmaceutical container sorting device and production system, for sorting pharmaceutical container, including the rotating mechanism of symmetrical distribution, rotating mechanism is synchronous rotation or synchronous stop under working condition, rotating mechanism is evenly distributed with the accommodation structure of circumferential along the periphery, container at sorting station is between the accommodation structure of two rotating mechanisms, rotating mechanism is provided with the gas path connecting structure connected to accommodation structure, pharmaceutical container sorting device further includes the gas supply mechanism of being connected with gas source and being arranged close to rotating mechanism, gas supply mechanism is used to provide compressed gas to accommodation structure through gas path connecting structure selectively.This sorting device realizes container sorting based on Bernoulli principle by compressed air blowing, and the pressure of compressed air can reach four to six atmospheres, so the sealing requirement is lower, even if there is air leakage, there is still enough suction to avoid the problem of broken bottle, and slightly air leakage can greatly reduce the processing and assembly difficulty.
Owner:HUNAN ZHENGZHONG PHARMA MACHINERY
Climate adjusting device based on Bernoulli principle
PendingCN121655044ALighting and heating apparatusWind motor supports/mountsBernoulli's principleThermal energy
The invention relates to the technical field of climate adjusting devices, in particular to a Bernoulli principle climate adjusting device which comprises a base, trusses and an office area are arranged at the top of the base, power generation mechanisms are arranged in the trusses, an iron ball wind damper mechanism is installed between the trusses, and a water spraying mechanism is installed at the top of the base. The power generation mechanism comprises a straight barrel, a stable cross beam is fixedly connected into the inner wall of the straight barrel, and a fan is fixedly connected to the bottom of the stable cross beam. According to the climate adjusting device, by means of the Bernoulli principle, through cooperation of the power generation body mechanism and an iron ball wind resistance device, air flow can be effectively promoted, and peripheral wind power generation equipment is driven to operate; meanwhile, the ground surface temperature is adjusted, heat energy generated by power generation and power utilization is reduced, electric energy is saved, the water spraying mechanism can reduce radiation of sunlight to the ground surface through water spraying, dust can be taken away in the air rising process, and the environment quality is improved.
Owner:赵茂生
3D uniform temperature plate based on Bernoulli principle
The invention discloses a Bernoulli principle-based 3D uniform temperature plate, which comprises a body, a steam cavity is arranged in the body, the steam cavity is divided into a core area and a non-core area, a communication unit is arranged on the body, a steam channel is arranged in the communication unit, and two ends of the steam channel are respectively communicated with the core area and the non-core area of the steam cavity. One end, corresponding to the core area, of the steam channel is venturi-shaped along the main stream direction of steam. The communicating units are arranged between the adjacent steam channels, a local low-pressure area is generated by utilizing the gradually-shrinking-gradually-expanding cross section during transverse migration of steam, a suction / drainage effect is formed on main stream steam, an effective flowing path is shortened, the total steam pressure drop is remarkably reduced, the total thermal resistance of the 3D uniform-temperature plate can be reduced by 20% or above, the in-plane temperature uniformity is improved, and the service life of the 3D uniform-temperature plate is prolonged. The method is suitable for high-heat-flux scenes such as communication equipment and AI computing terminals.
Owner:SHENZHEN FRD SCI & TECH
Pipeline flow speed control structure facilitating filling
ActiveCN223953862UOperating means/releasing devices for valvesPipe elementsRotational axisBernoulli's principle
The utility model discloses a pipeline flow velocity control structure convenient to fill, which relates to the technical field of pipeline flow velocity control and comprises a pipeline, a horn mouth is mounted on the bottom wall of the pipeline in a penetrating manner, an anti-slip connector is mounted at the bottom end of the horn mouth, a valve component is mounted at one end of the pipeline, and a valve is mounted at the other end of the pipeline. The valve assembly comprises a guide pipe installed at one end of the pipeline through a bolt, a rotating shaft is installed on the inner side of the guide pipe, a control motor is installed at the top of the guide pipe, and the output end of the control motor is connected with the top end of the rotating shaft. The trumpet-shaped nozzles are installed at the bottom of the pipeline, the trumpet-shaped nozzles are large in upper portion and small in lower portion, fluid is guided to move, according to the Bernoulli principle, due to the fact that the trumpet-shaped nozzles are large in upper portion and small in lower portion, the flow speed of the upper portion is low, but the flow speed of the fluid is increased after the fluid enters the small-diameter portion. Therefore, the fluid can be quickly output and filled.
Owner:XINJIANG BIOTECHNOLOGY INST OF ACAD OF ANIMAL SCI (CHINA & AUSTRALIA SHEEP BREEDING CENT OF XINJIANG ACAD OF ANIMAL SCI)
Suction unit for suctioning an object according to Bernoulli's principle and suction device including suction unit
Owner:A O FORMAFLON SWISS AG
A multi-functional semiconductor chamber processing apparatus
The application belongs to the technical field of semiconductor and discloses a multifunctional semiconductor cavity type processing equipment, which comprises a bearing mechanism, the bearing mechanism comprises a shell, opposite sides of the shell are fixedly connected with communication ports penetrating through the side walls, a first venturi, a second venturi and a third venturi are fixedly connected in sequence from left to right between the two communication ports, and the throats of the first venturi, the second venturi and the third venturi are fixedly connected with vertical pipelines in communication with the interiors thereof. In the application, when a liquid pump drives the liquid in the first venturi, the second venturi and the third venturi to flow, according to Bernoulli's principle, the liquid levels in the three vertical pipelines will drop by different heights, at this time, the center disc, the first supporting ring and the second supporting ring are arranged in an ascending ladder shape from inside to outside, at this time, wafers of different sizes will fall into supporting areas of different heights, so that the wafers of different sizes are stably supported.
Owner:SUZHOU WINMAX TECH CORP
Teaching toy based on Bernoulli principle
The teaching toy based on the Bernoulli principle comprises a handle, a motor, a power source, a wing wheel and an annular sheet, the motor and the power source are respectively arranged in the handle, the motor is powered by the power source, a power switch is installed on the handle, the output end of the motor is connected with the wing wheel, and a plurality of flow guide grooves are formed in the surface of the wing wheel. The inner diameter of the annular sheet is larger than the outer diameter of the middle of the wing wheel, after the motor is started, the wing wheel drives surrounding air to flow, the air pressure intensity of the periphery of the middle of the wing wheel is minimum, and the annular sheet is suspended on the outer side of the middle of the wing wheel and rotates around the middle of the wing wheel. The teaching toy based on the Bernoulli principle integrates interestingness, scientificity, intuition and heuristic into a whole, the Bernoulli principle can be visually displayed, and students can complete demonstration operation by themselves and feel the Bernoulli principle by themselves.
Owner:丁用才
Fluid measurement experiment device
The utility model belongs to the field of teaching experiment equipment, and particularly relates to a fluid measurement experiment device. Comprising an induced draft fan used for driving air to flow so that the air can obtain the flowing speed; the frequency converter is used for changing the rotating speed of the induced draft fan and further changing the air flowing speed, namely air speed; the ventilation pipeline is used for providing a specified path for flowing air, the two different ventilation pipelines are applied, and the variable-diameter pipeline can obtain different flow speeds under the same flow through measurement according to different circulation sections; and the other pipe is a transparent square pipe, so that students can measure and calculate the wind speed and the flow according to the Bernoulli principle. The pitot tube measurement system is used for being inserted into the ventilation pipeline for parameter measurement, and the reference measurement mechanism is used for verifying measurement data.
Owner:CHINA UNIV OF MINING & TECH YINCHUAN COLLEGE
Double-air-port bending type bladeless fan
The utility model discloses a double-air-port bending type bladeless fan. The fan comprises a base, a main body table, an air inlet, an electric wire, a brushless electric fan, an integrated air channel and other main parts. After being accelerated by the brushless electric fan, airflow enters the streamline air channel and is exhausted through the two air outlets. Due to the contraction design of the streamline flow guide plate and the air channel, different flow speeds are formed when air flow passes through the two air outlets, and therefore the fitting degree of the air flow and an air channel frame is enhanced through the Bernoulli principle and the Coanda principle, air flow disturbance is reduced, and the stability of wind power output is improved. The fan adopts the bladeless design, noise is effectively reduced, potential safety hazards are eliminated, meanwhile, the fan is attractive in appearance due to the integrated air channel design, and the fan is suitable for families, offices and other places and has the high mute effect and safety.
Owner:刘俊熙 +1
Underwater vehicle docking device and docking method
The invention provides an underwater vehicle docking device and docking method, and belongs to the field of underwater equipment.The underwater vehicle docking device comprises a base, a barrel, a locking piece and a liquid medium conveying assembly; a barrel and a liquid medium conveying assembly are arranged on the base; a liquid spraying flat opening is formed in the inner wall of the cylinder body, the liquid spraying flat opening is axially arranged around the cylinder body, the liquid spraying flat opening sprays annular liquid flow in the axial direction of the cylinder body, and the underwater vehicle is guided to enter the cylinder body through the annular liquid flow; the locking piece is used for locking the underwater vehicle entering the cylinder body; the liquid medium conveying assembly is used for conveying water into the barrel wall of the barrel. By utilizing the Coanda effect and the Bernoulli principle, annular liquid flow is jetted through the barrel structure, and a stable flow field can be formed in the barrel and in the surrounding environment under the action of the annular liquid flow, so that the underwater vehicle is not interfered by a disordered flow field in a water body environment when being close to the barrel for butt joint; and under the guide of the annular liquid flow, the liquid enters the cylinder body without deviation and collision.
Owner:CHINA STATE SHIPBUILDING CORP LTD RESEARCH INSTITUTE 719
Gas relays based on flow rate tripping
ActiveCN118942958BElectric switchesElectric component structural associationBernoulli's principleTransformer oil
The present invention provides a gas relay based on flow rate tripping. When a serious fault occurs in a transformer, the transformer oil surges. Since the arc length of the arc-shaped shell is greater than the straight-line length of the elastic wave plate, the oil flow velocity on the upper surface of the flow rate switch structure is greater than the oil flow velocity on its lower surface. According to Bernoulli's principle, the oil flow pressure on the upper surface of the flow rate switch structure is less than the oil flow pressure on its lower surface. The oil flow pressure difference between the upper and lower surfaces of the flow rate switch structure causes the elastic wave plate to deform upward, driving the linear displacement component to move upward to trigger the alarm switch action, sending a trip signal, and shutting down the transformer. The flow rate switch structure does not rely on the preload force of a spring or a magnet, but directly drives the elastic wave plate to deform through the oil flow pressure difference, thereby driving the linear displacement component to move upward to trigger the alarm switch action, avoiding the problem caused by preload force drift, and improving the measurement accuracy and reliability of the gas relay in heavy gas signals.
Owner:LANSO KONLY SHANGHAI INSTR
Guiding type pile foundation scouring protection method and device
The invention discloses a flow guide type pile foundation scouring protection method and device, and relates to the field of ocean engineering and hydraulic engineering. Comprising the following steps: S1, analyzing a flow field to obtain hydrological characteristic data of a sea area; s2, according to hydrological characteristic data, carrying out preliminary design on the key set size of the protection device; the structure comprises a main flow guide plate and a lateral flow guide plate, a flow guide protection device designed according to the Bernoulli principle is utilized, destructive descending water flow is converted into constructive sediment conveying water flow through multi-stage flow field regulation and control, and sediment is induced to deposit in a specific area around a pile while scouring is weakened. The flow separation phenomenon caused by pressure gradient sudden change when water flow flows through the surface of the main flow guide plate can be effectively avoided, the sand-containing water flow can be guided to stably enter and flow out of a protection area, and the conveying direction of sand can be better controlled.
Owner:OCEAN UNIV OF CHINA +1
A high refrigeration performance circulating fan
ActiveCN224396712Uorderly flowavoid interferencePump componentsPump installationsBernoulli's principleThermal dilatation
The utility model provides a kind of high refrigeration performance's circulating fan, air duct uses the design of different cross-sectional area of air inlet end, air outlet end and wind passing section, combine the shell of hyperbolic structure and outer wall surface smooth transition, air inlet end large cross-sectional area makes air mass enter, wind passing section small cross-sectional area accelerates airflow, according to Bernoulli's principle, flow rate accelerates and causes pressure to reduce, temperature drops, and gas is similar to adiabatic expansion in flow, work to outside makes internal energy decrease.Air outlet grille area is less than air inlet grille, and air outlet grille strip is located between adjacent air inlet grille strip, avoid airflow interference, ensure air orderly flow, air outlet grille towards the sharp corner structure of air inlet end, not only strengthen air outlet directional property, make airflow concentrated blow out, expand refrigeration coverage, it is also possible to airflow produce cutting and disturbance, promote heat exchange, improve refrigeration performance, the refrigeration performance and circulation performance of the fan are used with air conditioner, and good energy-saving effect can be achieved.
Owner:ZIBO HANCHEN ENVIRONMENTAL PROTECTION TECH CO LTD
Bernoulli principle fan
1. The name of this design product: Bernoulli principle fan. 2. Purpose of this design product: This design is a Bernoulli principle blower used to blow air into a Bernoulli levitation balloon to suspend the Bernoulli levitation balloon in mid-air using the Bernoulli principle. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the key points of the design: Design 1 Stereoscopic Drawing 1. 5. Designate Design 1 as the base design.
Owner:FOSHAN QIJIA CULTURE COMMUNICATION CO LTD
Suction unit and suction device
A suction unit 10 suitable for attracting an object P according to Bernoulli's principle comprises a deflection unit 12 having a deflection head 121 and a peg-shaped mounting element 122 adjacent to the deflection head 121, and a suction body 16, wherein the suction body 16 has a suction plate 11 with a front side facing away from the suction body 16, and the suction body 16 has an inlet passage 130 extending through the suction body 16 to the front side of the suction plate 11, the peg-shaped mounting element 122 is inserted into the inlet passage 130 from the front side of the suction plate 11, and the suction body 16 has a plurality of distribution passages 13 branching from the inlet passage 130, and a gaseous medium can be introduced into the deflection passage 110 from the inlet passage 130 through the distribution passages 13 to the front side of the suction plate 11, and the deflection passage 110 is bounded on one side by the front side of the suction plate 11 and on the other side by the deflection head 121 of the deflection unit 12. According to the present invention, along the flow channel segment 1300 of the inlet flow channel 130, each distribution flow channel 13 is connected to the inlet flow channel 130 by a connecting flow channel 133. The connecting flow channel 133 is closed by an inserted peg-shaped mounting element 122 or closing member 1200 along a part of the flow channel segment 1300, starting from the front side of the suction plate 11, and is open to the inlet flow channel 130 above the peg-shaped mounting element 122. Furthermore, a suction device 1 having a plurality of suction units 10 is disclosed.
Owner:アー オー フォルマフロン スイス アクチェンゲゼルシャフト
Vacuum pump pressure reducing device and pressure reducing vacuum pump
ActiveCN112628139BRotary/oscillating piston combinations for elastic fluidsRotary piston pumpsBernoulli's principlePressure difference
The present application relates to a kind of vacuum pump pressure reducing device and pressure reducing vacuum pump, and the vacuum pump pressure reducing device is equipped with air inlet passage end, exhaust passage end and pressure reducing cavity, by setting gas acceleration module in pressure reducing cavity, the gas flow rate in gas acceleration area is greater than the gas flow rate in gas inflow area, according to Bernoulli principle (the greater the gas flow rate, the smaller the pressure), by velocity change, the air inlet passage end and exhaust passage end that originally have similar pressure difference are generated, the pressure difference generated in two ends drives the gas flow rate of air inlet passage end to be larger.Thus, the exhaust resistance of air inlet passage end is relieved, the rotation rate of vacuum pump rotor is reduced, thereby preventing the excessive wear of vacuum pump, and prolonging the service life of vacuum pump.
Owner:CHANGXIN MEMORY TECH INC
Self-suction oxygenation impeller
The utility model relates to a self-suction type oxygenation impeller which comprises a connecting part and a plurality of first blades located on the connecting part, and the first blades are of unequal-thickness structures. The connecting part comprises a connecting column, a connecting cylinder and a plurality of second blades, the second blades are fixed to the inner circumferential face of the connecting cylinder and the outer circumferential face of the connecting column, the first blades are fixed to the outer circumferential face of the connecting cylinder, the first blades and the second blades are obliquely arranged, and the connecting column is connected with an output shaft of the driving motor; the driving motor drives the first blade and the second blade to rotate synchronously; the second blade is of an unequal-thickness structure; and the inclination angle of the second blade is different from that of the first blade. Compared with the prior art, the first blade and the second blade are of unequal-thickness structures conforming to the Bernoulli principle, so that water can be disturbed to flow upwards, the self-suction capacity can be greatly enhanced, more water can be disturbed, sprayed water spots are increased, the working efficiency is greatly improved, and the oxygenation effect is improved.
Owner:TAIZHOU YINGSHENG MECHANICAL & ELECTRICAL CO LTD
Wind speed identification line pipe unblocking and blocking device
The invention relates to a wind speed identification line pipe unblocking device. The device comprises an airflow generation unit; the first end of the main ventilation pipeline is communicated with the output port of the airflow generation unit; the line pipe connector is arranged at the second end of the main ventilation pipeline and is used for being in sealed connection with a to-be-detected line pipe opening; the lower end of the detection branch pipe is communicated with the main ventilation pipeline; the light floating ball is accommodated in the detection branch pipe and can freely move up and down in the detection branch pipe; and the wind speed detection unit comprises a wind speed sensor arranged in the detection branch pipe and a display electrically connected with the wind speed sensor. By using the Bernoulli principle and the airflow path selection characteristic, the unobstructed, partially blocked and completely blocked states of the line pipe are directly converted into the motion state of the floating ball in the detection branch pipe and the difference of wind speed readings, and the accuracy and reliability of the detection result are remarkably improved. The device is simple in structure and convenient to operate, and the detection efficiency is remarkably improved compared with a traditional method.
Owner:CHINA MCC20 GRP CORP LTD +1
Ventilation equipment for coal mine operation
The invention relates to the technical field of ventilation for coal mine operation, and discloses ventilation equipment for coal mine operation, which comprises a frame body, an axial flow fan, a corrugated pipe arranged in the axial flow fan, a spraying mechanism, and an adjusting mechanism arranged on the axial flow fan and used for performing relative treatment on harmful gases in a mine tunnel in a working state, the adjusting mechanism is arranged in the spraying mechanism and used for increasing or decreasing the flow speed of wind based on the working state of the spraying mechanism, the coupling mechanism and the adjusting mechanism are matched, the semi-arc ring drives the pushing cloth to narrow the ventilation section of the axial flow fan by 30%-50%, and according to the Bernoulli principle, the flow speed of the wind is increased or decreased. Meanwhile, the air supply angle is corrected, targeted air supply is carried out aiming at a dangerous area, the air speed is increased, the wind power is concentrated, harmful gas in an air inlet system or a coal seam crack permeation area which is difficult to install at a roadway turning is rapidly sent out, and the influence on personnel due to too long ventilation time is reduced.
Owner:HUAIBEI MINING CO LTD +1
Bernoulli principle fan, air outlet nozzle and external member
The utility model discloses a Bernoulli principle fan which comprises an air outlet nozzle and an external member. The Bernoulli principle fan air outlet nozzle comprises a nozzle shell and an air outlet pipe. A shell cavity is formed in the nozzle shell and comprises an air outlet cavity and a pipe cavity; the upper air outlet end of the air outlet cavity is communicated with the lower air inlet end of the pipe cavity; the inner diameter of the air outlet cavity is reduced from the lower air inlet end to the upper air outlet end in the height direction; the pipe cavity extends in an inclined mode, and the air outlet pipe is installed in the pipe cavity so that the air outlet pipe can be kept in the inclined direction; the inclination angle of the air outlet pipe relative to the horizontal plane is 70-85 degrees. According to the scheme, the problems that the Bernoulli principle is presented mainly by holding an air blowing cylinder, the angle is unstable, and the angle needs to be adjusted frequently are solved.
Owner:FOSHAN QIJIA CULTURE COMMUNICATION CO LTD
Bernoulli principle visual demonstration teaching aid
The utility model discloses a Bernoulli principle visualization demonstration teaching aid, comprising an air supply assembly having an air outlet, the air speed at the air outlet of the air supply assembly being adjustable; the bending sensor is arranged on one side, in the first direction, of the air supply assembly and is arranged on the downstream of the air outlet in the airflow direction, the first direction is perpendicular to the airflow direction, and the bending sensor bends towards the side close to the air supply assembly under the action of the airflow; and the acquisition module is connected with the bending sensor and is used for acquiring the resistance of the bending sensor, the Bernoulli principle visual demonstration teaching aid provides airflow with different flow speeds through the air supply assembly, and the Bernoulli principle visual demonstration is realized by using different resistance values of the bending sensor under different bending conditions.
Owner:杨佳潼
V-cone low-temperature oxidation denitration reactor
The utility model discloses a V-cone low-temperature oxidation denitration reactor and relates to the technical field of flue gas treatment. Comprising a shell, a support, an inner wall fixedly arranged on the shell, a V-shaped cone, a top fixedly arranged on the outer wall of the support and a plurality of groups of injection mechanisms, each group of injection mechanisms are arranged on the shell at equal intervals in the circumferential direction, and the cross section of the shell is in a circular ring shape. According to the V-cone low-temperature oxidation denitration reactor, by utilizing the Bernoulli principle and the special V-cone structure design, a denitration agent and flue gas are fully mixed in the reactor to form a fierce turbulent flow area, so that the mixing effect is greatly improved, the length of a reaction area can be shortened, and waste of the denitration agent is avoided; the reactor composed of the shell, the V-shaped cone on the support and the double-fluid atomization spray gun is simple in structure, free of movable parts, capable of avoiding complex daily maintenance and equipment management, easy to build and install, capable of being placed and installed in any mode and low in manufacturing cost.
Owner:SHANDONG SHANGWEI ENVIRONMENTAL PROTECTION MACHINERY CO LTD
Pressurized hydrofoil counterweight device based on Bernoulli principle and application of pressurized hydrofoil counterweight device
PendingCN121461210ACable installations on groundUnderwater equipmentBernoulli's principleMarine engineering
The invention discloses a pressurized hydrofoil counterweight device based on the Bernoulli principle and application of the pressurized hydrofoil counterweight device in underwater engineering. By optimizing the structure and the connection mode of the counterweight device, the performance and the stability of the counterweight device can be improved, the cable can reach the set underwater depth more easily, meanwhile, the deviation of the cable in the horizontal direction is reduced, the precision and the stability of the device are improved, and therefore the requirements of ocean engineering are better met.
Owner:HAINAN ZHIHAO TECH CO LTD
Wind generating set and turbulence intensity control method
The invention relates to the technical field of wind power generation, and discloses a wind generating set and a turbulence intensity control method. The rectifying part is arranged on the downstream side of the upstream impeller, so that the inner wall of the rectifying part and the outer wall of the cabin are enclosed to form the duct, and the circulation sectional area of the duct is gradually reduced in the airflow direction. According to a continuity equation and a Bernoulli principle, air flow can be gradually accelerated in the process of flowing through the duct, high-speed jet flow is formed in the tail area of the duct, and an acceleration area is formed. When the phases of the velocity gradient tensor and the Reynolds stress tensor in the acceleration region meet specific conditions, for example, the velocity gradient direction is opposite to the Reynolds stress direction, the turbulent energy generation item is presented as a negative value, the turbulent pulsation kinetic energy can be converted into the average flow kinetic energy, reverse energy transmission of the turbulent energy is triggered, and the turbulent energy generation efficiency is improved. And the scale splitting process of the turbulence vortex can be weakened, the turbulence pulsation intensity can be reduced, stable and ordered airflow can be conveyed to the downstream, and therefore the capture efficiency of downstream side wind energy is improved.
Owner:CHINA THREE GORGES CORPORATION
A new negative pressure thermal oxygen-removing water preparation device
The utility model relates to oxygen -removing water preparation technical field, especially disclose a novel negative pressure heat oxygen -removing water preparation device, including oxygen -removing device, circulating water injection system and circulating water pump, circulating water injection system utilizes Bernoulli's principle, and when high -speed fluid enters the inside of injection system through the nozzle and expansion chamber and forms the negative pressure area, steam vent and expansion negative pressure area are linked together, thereby steam is attracted to the injection system. Use circulating water as power source, and circulating water forms low pressure zone when passing through the nozzle in the inside of injection system, and the vent steam of oxygen -removing device is sucked to circulating water through pipeline connection and is fully mixed with circulating water and is condensed into water by cooling, thereby realizing the supplement to circulating water system, and when the suction effect of circulating water injection system reduces the absolute pressure of oxygen -removing device from 120kPa to 90kpa, the boiling point of water also reduces from 104 DEG C to 96 DEG C, and a large amount of water consumption and steam energy consumption are saved.
Owner:HEBEI XINHAI CHEM GRP CO LTD
Underwater transformer with pressure compensation structure
PendingCN120656816ATransformers/inductances coolingTransformers/inductances casingsBernoulli's principleTransformer
The underwater transformer with the pressure compensation structure is applied to the field of transformers, a flow guide shell and a water pump driving device are arranged outside the underwater transformer, the water flow speed outside the transformer is periodically increased, and the external static pressure of the transformer is reduced in a short time by means of the Bernoulli principle; the pressure compensator is actively triggered to generate deformation response, the state that the pressure compensator is located at a static deformation position for a long time is broken, fatigue aging, bonding and performance degradation of the corrugated pipe are prevented, the dynamic response capacity of the corrugated pipe is improved, and the service life of the corrugated pipe is prolonged; and a lifting piston, an upper touch switch and a lower touch switch are introduced to realize real-time monitoring and intelligent intervention on the deformation frequency of the corrugated pipe: when the natural water pressure change frequency is insufficient, a water pump is automatically started to disturb the water pressure, the dynamic change is simulated, and the activity of a pressure compensator is kept.
Owner:JIANGSU HENGTE GRP VALTTE ELECTRIC
Anti-spalling porcelain insulator
The utility model relates to the technical field of electric porcelain insulators, and discloses an anti-spalling porcelain insulator, which comprises an insulator body, and a cooling assembly is arranged in the insulator body. According to the anti-spalling porcelain insulator, when air flows to the vicinity of the blade, the blade rotates, so that the air enters the air inlet pipe through the air inlet according to the Bernoulli principle, takes away heat in the insulator body, and then discharges the heat out of the insulator body through the air outlet, thereby greatly reducing the temperature change in the insulator body, reducing the thermal expansion stress, and improving the anti-spalling performance of the insulator. The airflow passes through the narrowed convex ring, the flow speed of the airflow is increased, the air obtains more kinetic energy in the air inlet pipe, the heat transfer is more efficient due to the increase of the flow speed of the airflow, the heat in the insulator body can be more effectively taken away by the air at a high flow speed, and the cooling efficiency is improved; and expansion and fracture of the porcelain insulator caused by heat accumulation are avoided.
Owner:PINGXIANG QINGHUA ELECTRIC PORCELAIN CO LTD
Suction unit and suction device
Owner:A O FORMAFLON SWISS AG