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37results about How to "Reduce transmission efficiency" patented technology

Oil pipeline simulation analysis system

The invention discloses an oil pipeline simulation analysis system, relates to the technical field of oil pipelines, and provides accurate data support for subsequent dynamic monitoring and pipeline cleaning decision by constructing a three-dimensional visual model and identifying wax precipitation temperature and deposition risk in time. Through the risk identification module, the system can analyze and calculate the wax precipitation temperature based on the oil product attribute data obtained in real time, and timely judge whether the deposition risk exists in the oil pipeline or not. After receiving a dynamic tracking instruction, the dynamic analysis module can obtain the deposition thickness of each position in a pipeline in real time and analyze the influence of oil temperature and flow velocity changes on deposition distribution, the analysis provides important input data for the pipe cleaning module, the deposition thickness and a heat loss coefficient are fitted through a deep learning technology, and the deposition thickness and the heat loss coefficient are matched with each other. The system may automatically calculate a delivery stability score. When the conveying stability score exceeds a set threshold value, the system can automatically start a pigging measure execution mechanism.
Owner:SHANDONG UNITED ENERGY PIPELINE TRANSMISSION CO LTD

Electric C-shaped nail gun

The invention provides an electric C-shaped nail gun which comprises a machine shell, a driver, a transmission module, a driving screw and two clamping pieces, the driver is arranged in the machine shell and can be powered to move, the transmission module is connected with the driver, the driving screw is provided with external threads and is screwed with the transmission module, the external threads are trapezoidal threads, the clamping pieces are arranged on the machine shell in a pivoted mode, and the clamping pieces are connected with the driving module. The driver can drive the guide screw rod through transmission of the transmission module, the guide screw rod moves linearly, the abutting assembly abuts against the two clamping pieces to rotate relative to the machine shell, and therefore the clamping parts of the two clamping pieces get close to each other, and the C-shaped nail is formed in a clamping and pressing mode. According to the C-type nail gun, the torque provided by the driver is converted into linear movement of the guide screw through the trapezoidal threads, the transmission efficiency can be improved, and the overall power density of the C-type nail gun is increased.
Owner:MAINPACK INDAL

Semi-cured adhesive insulating film, preparation method, application and use method thereof

The invention discloses a semi-cured adhesive insulating film, a preparation method, application and a use method thereof. The semi-cured adhesive insulating film comprises an upper organic silica gel layer, a lower organic silica gel layer and a middle polyimide film, wherein the upper organic silica gel layer and the lower organic silica gel layer are filled with heat-conducting filler; the organic silica gel layer is prepared from the following components in parts by weight: 6 to 8 parts of high-viscosity liquid organic silicon rubber, 2 to 3 parts of low-viscosity liquid organic silicon rubber, 0.5 to 0.8 part of hydrogen-containing silicone oil, 0.1 to 0.5 part of an inhibitor, 0.1 to 0.2 part of a platinum catalyst, 0.1 to 0.3 part of a silane coupling agent, 0.1 to 0.3 part of an organic silicon tackifier and 10 to 20 parts of nano spherical boron nitride powder; and 20-40 parts of aluminum nitride powder. The semi-cured insulating adhesive film is prepared by compositely filling the organic silica gel layers of the heat-conducting filler on the two surfaces of the polyimide film, and is small in occupied space, simple in assembly process, high in insulating reliability and low in use cost.
Owner:SHENZHEN UNION TENDA TECH CO LTD

Atomization gas recovery device and atomization device

The atomized gas recovery device comprises a shell and a filter membrane in the shell, the shell comprises a rear shell and a front shell, and the atomized gas recovery device is characterized in that the front shell comprises a front shell cover and a suction component, a front shell positioning opening is formed in the front shell cover, a gas outlet and a rear shell mounting positioning opening are formed in the rear shell, the filter membrane is an annular piece, and the suction component is arranged in the annular piece. And the suction component penetrates through the front shell positioning opening, the filtering membrane and the rear shell mounting positioning opening. An expiration port and an expiration one-way valve are arranged in the middle of a tube body of the inhalation component, a mist inlet located in the shell and at one end of the tube body of the inhalation component is used for being connected with a mist outlet of an atomization device, and the portion, between the expiration port and the mist inlet, of the inhalation component is sleeved with the filter membrane, so that expired gas pushes away the expiration one-way valve after coming out of the expiration port, and the atomization device is used for atomization. And after being filtered by the filter membrane, the air overflows from the air outlet on the rear shell. A mist outlet of the atomization device is connected with a mist inlet of the suction component. And the structure design is reasonable, simple and compact, the aerosol transmission efficiency is high, recovery of exhaled gas is facilitated, and operation and use are convenient.
Owner:QINGDAO FUTURE MEDICAL TECH CO LTD

Hollow-core-to-hollow or solid-core-to-hollow optical fiber connection jumper wire and preparation method thereof

The invention provides a hollow-core-to-hollow or solid-core-to-hollow optical fiber connection jumper wire and a preparation method thereof. The jumper wire comprises a transmission fiber and connectors connected to the two ends of the transmission fiber. The transmission fiber is a hollow-core optical fiber, the connector comprises an optical fiber fixing device and an integrated welding structure fixed in the optical fiber fixing device, the integrated welding structure comprises a transmission fiber, a coating film and a transition fiber which are fixedly connected in sequence, the coating film performs anti-reflection on a set wavelength, the transition fiber is a solid-core optical fiber, and the outer side end of the transition fiber serves as the output end of the connector; and the output ends of different connectors are oppositely arranged so as to realize transmission connection between different jumpers. Pluggable, stable and reliable connection between the hollow-core optical fibers or between the hollow-core optical fibers and the solid-core optical fibers is achieved.
Owner:YANGTZE OPTICAL FIBRE & CABLE CO LTD +1

Liquid suction assembly, transmission, power assembly and vehicle

ActiveCN222141921UPrevent failure to lubricatereduce transmission efficiencyGear lubrication/coolingControl engineeringMechanical engineering
The utility model discloses a liquid suction assembly, a transmission, a power assembly and a vehicle. A first channel is defined by the liquid suction assembly, one end of the first channel is a first opening suitable for being connected with a pump body, and the first channel is used for introducing liquid; a first plug body is accommodated in the first channel and can move in the first channel; the liquid suction assembly has a first blocking state, and in the first blocking state, the first plug body moves to the first opening and blocks the first opening. The first plug body is arranged, the first plug body can block the first opening, when the liquid level is lower than the first opening and air suction occurs, the liquid suction assembly can be switched to the first blocking state at the moment, and the situation that a gearbox cannot be lubricated due to air suction of the liquid suction assembly, oil stirring losses are caused, and the gear shaft transmission efficiency is reduced can be prevented.
Owner:BYD CO LTD

Depth camera assembly simulation system and method for robot joint simulation

PendingCN119653253AImprove acquisition efficiencyreduce transmission efficiencyData acquisitionEngineering
The invention discloses a depth camera assembly simulation system and method for robot joint simulation, a depth camera sensor is packaged into a sensor assembly in a UE engine to be used in an ROS2 platform, and the sensor assembly comprises an interaction layer, a communication layer, a data layer and a texture capture layer; the texture capture layer obtains and stores a scene depth map; a depth data acquisition module in the data layer acquires a depth value of each pixel in the scene depth map and converts the depth value into a general image format in opencv, and the converted image is packaged through a data format packaging module; a Fastdds communication module is integrated in the communication layer so as to acquire and publish the packaged image; a picture transmission parameter configuration module and a camera parameter configuration module are arranged in the interaction layer to configure camera parameters and picture transmission parameters, and a configuration file is stored; according to the depth camera assembly simulation system and method, the depth image acquisition efficiency is improved.
Owner:江淮前沿技术协同创新中心

Multi-functional steam ice cream stick

The utility model relates to a multifunctional steam milk bar, including the tubular body, one end connects the steam source, and the other end sets up the blast hole, sleeve, sleeve sets up on the tubular body, the sleeve and the tubular body form the air cavity between, and the sleeve sets up the inflation hole intercommunication air cavity on, around the inflation hole, the surface of sleeve sets up the adjusting cylinder, adjusting sleeve, set up in the adjusting cylinder, adjusting sleeve sets up the air inlet groove A on, the air inlet groove A intercommunication inflation hole, adjusting head, extends into the adjusting cylinder, adjusting head sets up the air inlet groove B on, wherein, the sleeve opening sets up close to the blast hole one end, and the other end of sleeve and tubular body between seal connection, around the axis of rotation adjusting head adjusting head, the air inlet groove A and the air inlet groove B intercommunication or break off, the utility model discloses through the adjusting head on the sleeve, can intercommunication or break off the air inlet groove A and the air inlet groove B, realize the quick switching of multifunctional steam milk bar's work mode, and the switching mode is simple and quick, and the use efficiency of multifunctional steam milk bar is improved.
Owner:BEAR ELECTRICAL APPLIANCE CO LTD +1

Welding positioning device for pressure vessel

According to the technical scheme, the pressure vessel welding positioning device comprises a base, main wheel frames are arranged at the front end and the rear end of the upper end of the right side of the base, driving wheels are arranged in the middles of the main wheel frames, a motor is arranged at the front end of the right side of the base, and a main belt wheel is arranged in the middle of the rear end of a motor shaft; an auxiliary connecting shaft is arranged in the driving wheel, a key pin is arranged on the surface of the upper end of the middle of the auxiliary connecting shaft, auxiliary wheel frames are arranged at the front end and the rear end of the upper end of the left side of the base, a driven wheel is arranged in the middle of each auxiliary wheel frame, and a main connecting shaft is arranged in each driven wheel. A hydraulic rod is arranged in the middle of the right side of the connecting block, a hydraulic cylinder is arranged in the middle of the right side of the hydraulic rod, a guide rail is arranged at the lower end of the sliding block, a clamping groove column is arranged at the lower end of the guide rail, and stopping blocks are arranged on the left side surface of the base and the left side surface of the auxiliary wheel frame.
Owner:NINGXIA HENGTAI CHEM EQUIP CO LTD

Stable refractory material brick-shaped structure

PendingCN119436851Astable structurereduce transmission efficiencyFurnace componentsBrickRefractory
The invention relates to a refractory material brick-shaped structure stable in structure. The section of the refractory material brick-shaped structure is of an arc-shaped blocky structure. A notch I is formed in one end of the inner side wall surface of the arc-shaped blocky structure; a notch II is formed in one end of the outer side wall surface of the arc-shaped blocky structure; the notch I and the notch II are positioned at different ends of the arc-shaped blocky structure; a groove I which is concave towards the outer diameter surface is formed in the bottom surface of the notch I, and the groove I is formed in one side close to the notch II; a groove II which is concave towards the inner diameter surface is formed in the bottom surface of the notch II, and the groove II is formed in one side close to the notch I; the intersection points of the two end surfaces and the outer diameter surface of the arc-shaped blocky structure are A and F respectively; the intersection points of the two end surfaces and the inner diameter surface of the block-shaped structure are L and G respectively; according to the invention, a stable straight wall body structure or a cylindrical structure can be built by a single brick type.
Owner:SINOSTEEL LUOYANG INSTITUTE OF REFRACTORIES RESEARCH CO LTD

An active continuous telescopic space robot arm joint for on-orbit assembly tasks

An active continuous telescopic space robot arm joint for on-orbit assembly tasks relates to the field of space robot technology. The small arm rod housing, the middle arm rod housing and the large arm rod housing are nested step by step from the inside to the outside, and the electromechanical interface is installed at the top of the small arm rod housing and the bottom of the large arm rod housing. The small arm rod housing and the middle arm rod housing are fixed with a locking system at the bottom, and multiple locking petals are radially expanded or contracted to achieve locking or unlocking. The transmission system adopts an active rotary joint transmission screw. The threaded section of the screw cooperates with multiple small arm rod nut assemblies and is evenly fixed inside the small arm rod housing. The cylindrical section of the screw is sleeved with a middle arm rod nut assembly and fixed at the bottom of the middle arm rod housing. The introduction of an active continuous telescopic mechanism allows the robot arm joint to independently and continuously adjust its length within the entire travel range, and can be firmly locked at any position to meet the needs of different on-orbit assembly tasks.
Owner:HARBIN INST OF TECH

A cube corner anti-offset wireless charging device and method

ActiveCN121770195BBreaking through the limitations of magnetic field coverageRealize magnetic field energy radiationCircuit arrangementsVehicular energy storageTransmitter coilSpatial structure
This invention discloses a three-dimensional angle-resistant wireless charging device and method, belonging to the field of wireless charging technology. The device includes first to sixth transmitting coils and first to third receiving coils. The six transmitting coils form a cubic spatial structure, with the first and second transmitting coils facing each other and serving as the front and back faces of the cubic space; the third and fourth transmitting coils facing each other and serving as the left and right faces of the cubic space; and the fifth and sixth transmitting coils facing each other and serving as the top and bottom faces of the cubic space. The three receiving coils form a sphere located at the center of the cubic space. This invention achieves omnidirectional, dead-angle-free magnetic field energy radiation.
Owner:SUZHOU UNIV

Ball screw for a brake system

The utility model discloses a ball screw for a braking system, which comprises a thread sleeve and a screw, the thread sleeve and the screw are respectively provided with a threaded channel, a plurality of balls are rotatably arranged in the threaded channels, the thread sleeve is rotatably connected, a reverser is arranged on the thread sleeve corresponding to the positions of the balls, and the reverser is connected with the screw. The threaded sleeve is provided with a flange in the length direction of the lead screw, a connecting spline is arranged on the flange, the lead screw is arranged in a hollow mode to form a connecting through hole, the reverser is provided with a guide groove used for being communicated with an adjacent threaded channel, the position, corresponding to the guide groove, of the reverser is provided with a lubricating window, and a grease storage device is inserted into the lubricating window. The structure is simple, the using effect is guaranteed, meanwhile, the balls are convenient to lubricate, and the good using effect is achieved.
Owner:C&U CO LTD +2

Semi-open all-dielectric barrier discharge low-temperature plasma ionization source device

ActiveCN119517727AGuaranteed stabilityreduce transmission efficiencyIon sources/gunsJet flowLow temperature plasma
The invention relates to the technical field of low-temperature plasmas, in particular to a semi-open all-dielectric barrier discharge low-temperature plasma ionization source device which comprises a sample tube, a jet tube and an ion area, one end of the sample tube is provided with a sample input end, the other end of the sample tube is a closed end, and the jet tube penetrates through the closed end. A receiving opening is formed in the end, located on the inner side of the cavity of the sample pipe, of the jet pipe, and the other end of the jet pipe is connected with an ion area arranged on the outer side of the jet pipe through an output opening; according to the in-situ ionization device, the technical means of a semi-open structure, filling of a cavity with low-temperature plasma, bidirectional jet flow, directional jet flow paths and the like are combined, and the in-situ ionization device is suitable for in-situ ionization of irregular, low-concentration and difficult-to-volatilize solids; and the ionization efficiency, the signal intensity and the detection sensitivity are obviously improved.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Infrared video storage method and device

PendingCN119127815AEnsure acceptable qualitymaintain acceptable qualityTelevision system detailsDigital data information retrievalVideo storageData pack
The invention belongs to the technical field of infrared video processing, and particularly relates to an infrared video storage method and device, and the method comprises the steps: obtaining file information data which comprises equipment parameters, infrared parameters and OSD parameters; acquiring infrared video data, wherein the infrared video data comprises infrared audio and video data, visible light data, RAW data and temperature data; based on a first compression algorithm, compressing and storing the infrared audio and video data and the visible light data; and performing compression storage on the RAW data and the temperature data based on a second compression algorithm. According to the method, the infrared audio and video data and the visible light data are compressed and stored based on the first compression algorithm, the acceptable quality of the part of data in vision is kept while the data volume is reduced, and the storage space is saved and the transmission efficiency is improved. The RAW data and the temperature data are compressed and stored based on a second compression algorithm, and it is ensured that key information and precision are reserved to the maximum extent in the compression process.
Owner:UNI TREND TECH (CHINA) CO LTD

Immersed liquid cooling server cabinet

The invention discloses an immersion liquid-cooled server cabinet, which relates to the field of server cabinets and comprises a cabinet body, a power connector being installed on the rear wall of the cabinet body, a cabinet door being hinged on the side wall of the cabinet body, and a compressor being installed on the side wall of the cabinet body, an air intake pipe being connected between the input end of the compressor and the cabinet body, and one end of a shrink tube being fixedly connected to the output end of the compressor, and a liquid guide tube being fixedly connected to the other end of the shrink tube. The advantages of the invention are that the temperature of the coolant in the cabinet body is balanced, so that the cooling effect of electrical components in the server is the same, while the gradual reduction of the coolant is avoided, so that the server is cooled, the cost is reduced, the environment is protected, and the condensation efficiency and stirring efficiency of the coolant can be automatically adjusted according to the content of the coolant in the cabinet body. The synergistic effect of the three does not require the participation of sensors, reduces the probability of device damage, and reduces the difficulty of wiring, installation and use.
Owner:SHEN ZHEN KELLY FEIYA TRADING CO LTD +1

Immersed liquid cooling server cabinet

The invention discloses an immersed liquid-cooled server cabinet, and relates to the field of server cabinets, the immersed liquid-cooled server cabinet comprises a cabinet body, a power connector is mounted on the rear wall of the cabinet body, a cabinet door is hinged to the side wall of the cabinet body, a compressor is mounted on the side wall of the cabinet body, an air suction pipe is communicated between the input end of the compressor and the cabinet body, and the input end of the compressor is connected with the air suction pipe. The server cooling cabinet has the advantages that the temperature of cooling liquid in the cabinet body is balanced, the cooling effects of electrical components in a server are the same, meanwhile, the cooling liquid is prevented from being gradually reduced, cooling of the server is guaranteed, meanwhile, cost is reduced, and the server cooling cabinet is suitable for popularization and application. The environment is protected, the condensation efficiency and stirring efficiency of the cooling liquid can be automatically adjusted according to the content of the cooling liquid in the cabinet body, the synergistic effect of the three parts does not need a sensor, the damage probability of the device is reduced, and the wire arrangement and installation and use difficulty is also reduced.
Owner:SHEN ZHEN KELLY FEIYA TRADING CO LTD +1

Lithium-philic porous interface functional layer and preparation method and application thereof

The invention discloses a lithium-loving porous interface functional layer as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving a binder in a non-polar solvent to form a solution A; adding a lithium-loving porous framework material and an electronic conductor into the solution A through a water bath synthesis method, and stirring and reacting to form a solution B; adding a small amount of ionic conductor into the solution B for multiple times to form a solution C; and coating a current collector with the solution C, and drying to form the lithium-loving porous interface functional layer on the current collector. The invention also discloses a lithium-loving porous interface functional layer prepared by the preparation method, and a lithium negative electrode containing the functional layer. The lithium-loving porous interface functional layer comprises the lithium-loving framework, the hole wall of the lithium-loving framework comprises the electronic conductor, and the hole internally comprises the ionic conductor, so that the infinite volume expansion of lithium can be limited, the lithium ion flow is homogenized, the effective current density on the surface is reduced, and the growth of lithium dendrites is inhibited; and the high-capacity and long-cycle performance of the all-solid-state lithium metal battery is realized.
Owner:SHANGHAI FIRM LITHIUM NEW ENERGY TECH CO LTD

Low-dimensional co-occupying perovskite single crystal and preparation method thereof

The invention discloses a low-dimensional co-occupying perovskite single crystal and a preparation method thereof, belongs to the field of photoelectrons, and is a novel photoelectric material in which bismuth and antimony trivalent ions jointly occupy the position of a central cation of a perovskite octahedron. The chemical formula of the novel single crystal is (4AP) SbmBi1-mI5. Wherein A is 4-formamidinopyridine, B is SbmBi (1-m), and X is I; 4-formamidinopyridine has richer hydrogen bond donors than amino groups and has lower acidity and polarity than amino cations of the same type, and meanwhile, due to a special bimetal co-occupation structure, the crystal has more comprehensive performance than a single metal-based perovskite single crystal. Therefore, when the perovskite material is formed, compared with other metal halide perovskite materials with a single metal base or amido and the like, the single crystal prepared in the invention shows a lower ion migration phenomenon and more excellent photoelectric properties.
Owner:SHAANXI NORMAL UNIV

All-solid-state supercapacitor based on CuCo2O4-PDMT composite electrode and preparation method

PendingCN121812379Areduce transmission efficiencyImprove electrode electronic conductionHybrid capacitor electrolytesHybrid capacitor electrodesCapacitancePolyethylene glycol
The invention belongs to the technical field of supercapacitor electrode materials, and relates to an all-solid-state supercapacitor based on a CuCo2O4-PDMT composite electrode and a preparation method thereof.The preparation method comprises the steps that copper nitrate and cobalt nitrate serve as metal sources, and a CuCo2O4 bottom layer is prepared through constant-potential electro-deposition-muffle furnace annealing; 2, 5-dimethylthiophene (DMT) is used as a monomer, a PDMT top layer is prepared through cyclic voltammetry electropolymerization, and a CuCo2O4-PDMT composite electrode is formed; polyethylene glycol (PEG) is used as a gel matrix, lithium perchlorate (LiClO4) is used as an ion source, nano TiO2 is used as a reinforcing agent, and the composite gel electrolyte is prepared through'microwave dissolution-ultraviolet curing '. The composite electrode and the gel electrolyte are assembled into the all-solid-state symmetrical supercapacitor, so that the defects of high electrode electron transmission impedance, low gel electrolyte ion conductivity and insufficient cycling stability of the existing all-solid-state supercapacitor are overcome, and the collaborative construction of the composite electrode conductive network and the gel electrolyte ion channel is realized; and the performance limitation of traditional single component optimization is broken through.
Owner:XIAN THERMAL POWER RES INST CO LTD +1

A magnetic integrated roller press drive system

The present invention provides a magnetic integration roller press drive system, which belongs to the field of mechatronic transmission technology, including a high-efficiency, low-speed, high-torque direct-drive permanent magnet motor, a magnetic coupling damper, a universal joint, a damper control system, a high-voltage frequency converter and a coupling, wherein the high-voltage frequency converter drives the high-efficiency, low-speed, high-torque direct-drive permanent magnet motor to generate torque and speed, the magnetic coupling damper is fixed to the motor shaft extension end through a support assembly, the universal joint is connected to the high-efficiency, low-speed, high-torque direct-drive permanent magnet motor shaft extension end and the roller press grinding roller through a coupling, and the magnetic coupling damper is controlled by a damper control system. The system of the present invention has a simple structure, a small volume, high efficiency, and low noise, and can greatly improve the transmission efficiency of the system, improve the reliability and stability of the system, reduce the maintenance cost of the transmission system, and ensure the safety of production.
Owner:NANYANG ZHIQU EXPLOSION PROOF ELECTRIC CO LTD +1

A protection device for a gantry double-drive synchronous motion system with adjustable margin

ActiveCN224373515Ureduce mistakesEnsure proper tensionGearingMetal working apparatus
This utility model relates to the field of mechanical engineering, and more particularly to a protection device for a gantry dual-drive synchronous motion system with adjustable margin. The dual-drive synchronous mechanism consists of two transmission mechanisms, each containing a dual-axis motor, lead screw, pulley, and belt, providing power to the crossbeam. The crossbeam moving mechanism includes a crossbeam and a base, with lead screws connected to both ends of the crossbeam. Position sensors are installed on the crossbeam to detect the relative height of the two ends to ensure synchronization. The protection mechanism includes a limiting component and a tensioning component. The tensioning component is used to adjust the tension of the transmission belt, achieving adjustable margin to adapt to different working conditions. The limiting component not only restricts the movement range of the synchronous pulley, but its limiting position is also adjustable, thereby setting the allowable working range margin of the synchronous pulley. This invention ensures the motion synchronization of the gantry system through position sensor feedback and dual margin adjustment, and improves the reliability and adaptability of the system by protecting key components through limiting.
Owner:TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI

A coupling mechanism for a worm gear box

The utility model relates to a technical field of joint mechanism, especially a joint mechanism of worm wheel box, including: box, the worm wheel and worm structure is included in the box, and the worm end part is equipped with the shaft coupling, the shaft coupling includes: first half coupling, first half coupling is installed in the worm end part, second half coupling, second half coupling is connected on first half coupling through intermediate element, intermediate element, intermediate element includes disc body, and the both sides of disc body are equipped with the boss that is perpendicular to each other, installation layer, installation layer is covered in the boss, and is equipped with a plurality of even distribution rollable ball on the installation layer, the boss cooperation is installed in the recess of half coupling, and the installation layer is between half coupling and intermediate element, the utility model reduces the motion resistance and component wear and tear obviously, promotes transmission efficiency, and whole structure is composed of half coupling, intermediate element and installation layer simultaneously, and the number of parts is few, and the assembly relation is simple, effectively simplifies the installation process, and reduces the assembly difficulty.
Owner:ZHEJIANG CHENGDA VALVE DRIVE CO LTD

DAB Converter

ActiveCN113726168Breduce transmission efficiencyEfficient power electronics conversionDc-dc conversion
The present invention provides a DAB converter capable of suppressing a decrease in power transmission efficiency due to individual differences in inductance. A DAB converter comprising: a transformer having a primary winding and a secondary winding; a first full-bridge circuit; a second full-bridge circuit; a first capacitor; a second capacitor; and a control unit, wherein the primary winding is connected between an eleventh midpoint and a twelfth midpoint of the first full-bridge circuit, the secondary winding is connected between a twenty-first midpoint and a twenty-second midpoint of the second full-bridge circuit, the first capacitor is connected between two input / output terminals of the first full-bridge circuit, and the second capacitor is connected between two input / output terminals of the second full-bridge circuit, and the control unit adjusts a phase difference between a switch of the first full-bridge circuit and a switch of the second full-bridge circuit based on an estimated value of the inductance of the DAB converter.
Owner:TDK CORP

Model-free predictive control method for dual active bridge converters considering current stress

The present invention discloses a model-free predictive control method for a dual active bridge converter considering current stress, which belongs to the field of power electronic control. Firstly, a voltage prediction hyperlocal model of the dual active bridge converter under extended phase-shift modulation is constructed, which effectively reduces the dependence on model parameters. Secondly, an adaptive linear extended state observer is designed, the observer gain is adjusted in real time, and the dynamic part of the voltage prediction hyperlocal model is compensated in advance by adaptively following the observation error, a cost function is constructed, and the functional relationship between the optimal control inner and outer shift ratios (#imgabs0#) is solved online. Finally, a Lagrange multiplier method under extended phase-shift modulation is proposed to solve the optimal inner shift ratio when the optimal current stress is obtained, and the optimal inner and outer shift ratios are obtained, so as to realize the model-free predictive voltage control of the dual active bridge converter, which not only reduces the inductor current stress, but also ensures the excellent dynamics and robustness of the system.
Owner:QUANZHOU INST OF EQUIP MFG +1

Data transmission method, device, electronic device and storage medium

The present disclosure discloses a data transmission method, device, electronic device and storage medium, the method comprising: obtaining a data transmission instruction, the data transmission instruction comprising a source address and a destination address of target data; in response to the data transmission instruction, determining an adapted target interface machine according to the destination address; generating configuration information according to the source address and the destination address of the target data; sending the configuration information to the target interface machine, and controlling the target interface machine to transmit the target data. The data transmission method provided by the embodiment of the present disclosure can determine an adapted target interface machine according to the destination address of the target data, generate configuration information according to the source address and the destination address of the target data, and send the configuration information to the target interface machine so that the target interface machine transmits the target data, realizes dynamic selection of the target interface machine according to the source address and the destination address of the target data, uses the target interface machine applicable to the current network status to transmit the target data, and improves the transmission efficiency of the target data.
Owner:GUANGZHOU HUYA TECH CO LTD

Energy capturer based on micro vibration of metro floating slab track

The invention discloses an energy capturer based on micro vibration of a metro floating slab track, and relates to the field of vibration energy capture. The energy capturer comprises a rack system, a transmission shaft system, a reversing device, a generator system, a mounting bottom plate, a rigid support and the like, when a subway train passes, the floating slab track generates tiny vibration; the device is installed in an observation hole of a metro floating slab track, and a rack system is anchored to the side wall of the observation hole and used for inputting track vibration into an energy capturer. The one-way transmission mechanism converts two-way vertical motion of the floating slab track into one-way rotating motion and transmits the one-way rotating motion to the three-phase alternating-current generator, and the output performance and the structural strength of the device are improved. The metro floating slab track vibration energy conversion device can convert metro floating slab track vibration energy into usable electric energy, does not affect normal work of track facilities, can be widely applied to metro floating slab tracks, and achieves self-power supply of a metro sensor network.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Waste lead-acid storage battery disassembling device

The invention discloses a waste lead-acid storage battery disassembling device, and relates to the technical field of waste lead-acid storage batteries, the waste lead-acid storage battery disassembling device comprises a machine body, a disassembling chamber is fixedly installed at the top of the right end of the machine body, a motor is fixedly installed on the outer wall of the machine body, a rotating roller is fixedly installed at the output end of the motor, and a conveying belt is fixedly installed on the outer wall of the rotating roller; through cooperation of the pretreatment chamber, a tray, a placement frame, a connecting plate, a liquid receiving hopper, a drainage pipe, a recovery box, a linkage rod, a first hook-shaped toothed bar and a second hook-shaped toothed bar, liquid flows from the liquid receiving hopper to the recovery box through the drainage pipe to be recovered, through arrangement of the recovery box, the liquid can be recycled, and the recycling efficiency is improved. According to the waste storage battery liquid collecting device, residual liquid in waste storage batteries can be effectively collected, environmental pollution caused by liquid leakage is prevented, meanwhile, centralized treatment and recycling of harmful substances are facilitated, the treatment cost is reduced, and the resource utilization rate is increased.
Owner:NANTONG QUIMO POWER CO LTD

Epoxy reinforced production conveying frame

The application provides an epoxy steel bar production conveying frame, which comprises multiple groups of support wheel groups arranged along the conveying direction of the steel bar, each group of support wheel groups comprises two support wheels arranged in parallel, and the two support wheels rotate synchronously around their own axes; an included angle is arranged between the axial direction of the support wheel and the conveying direction of the steel bar, so that the projection of the two support wheels in the conveying direction of the steel bar is V-shaped, and when the steel bar is placed on the two support wheels of the same support wheel group, the friction force of one side surface of the steel bar is upward, and the friction force of the other side surface of the steel bar is downward. The application adopts the mode that the steel bar is placed on multiple groups of support wheels arranged in parallel, so that the two sides of the steel bar are in contact with the support wheels respectively, a deflection force is formed, the steel bar can rotate around its own axis, and meanwhile, due to the inclined arrangement of the support wheels and the fact that the steel bar is placed in the same side half circle of the support wheel, the steel bar is subjected to a component force along the movement direction, so that the steel bar rotates while moving forward, so that the shot blasting and the coating can be distributed more uniformly on the surface of the steel bar.
Owner:NO 5 ENGINEERING COMPANY LTD OF CCCC FIRST HARBOR ENGINEERING COMPANY LTD

Fermentation equipment based on pig feed processing

The utility model discloses fermentation equipment based on pig feed processing, which belongs to the technical field of feed processing equipment and comprises a device body, a motor box is arranged on the upper surface of the device body, a transmission device is arranged in the motor box, and a connecting rod is fixedly connected outside the transmission device. And the other end of the connecting rod is fixedly connected with a stirring device. According to the feed fermentation device, the motor box, the transmission device and the stirring device are arranged, when feed needs to be fermented, a first sealing cover is opened, a leavening agent is put into the stirring rod, then the stirring device is driven by the transmission device to rotate, and in the stirring process, the leavening agent in the stirring rod can be stirred through centrifugal force generated by the stirring device in the rotating process; and the leavening agent is thrown out from the one-way valve nozzle, so that the leavening agent in the feed is more uniformly filled, manual addition is not needed, and the fermentation efficiency is higher.
Owner:王亚楠 +3