4843 results about "Power apparatus" patented technology

An automotive emergency start power supply with an inflation function includes: an inflation pump, an internal power supply, and a first circuit board. The inflation pump is provided with a first power device, a detection assembly, and a first check valve; the first power device includes a first driving assembly and a first inflation assembly including a first transmission assembly, first cylinder assembly and connecting pipe; the first driving assembly is configured to provide power to the first inflation assembly, and the first inflation assembly is configured to provide first airflow to the first air outlet portion; the detection assembly is configured to detect air pressure information; and the first check valve is disposed in a first accommodating space formed by the first cylinder assembly and the connecting pipe, and is configured to allow the first power device to provide the first airflow to the first air outlet portion.

The invention belongs to the cross technical field of the fusion graph attention network and the ship resistance field, and discloses a ship resistance intelligent forecasting method and system, and the method comprises the steps: constructing nodes and edges in a graph attention network, and carrying out the preprocessing of data; designing and improving a loss function; a dynamic weight multi-attention mechanism is established, and attention weights are automatically distributed according to different ship type features; applying a training strategy of an Adam and SGD combined optimizer to obtain a graph attention network model; and carrying out ship resistance prediction evaluation through the dynamic weight map attention network model. By introducing the ship resistance intelligent forecasting method based on the dynamic weight map attention network and the physical constraint, the ship resistance intelligent forecasting method has the advantages of simple structure and clear algorithm, is specially designed for forecasting resistance under different ship types and solving the matching problem of propellers and power devices, shows remarkable innovativeness and practical value, and is suitable for popularization and application. Powerful support is provided for optimization design, energy conservation and emission reduction and safe navigation of the ship.

The invention relates to the technical field of hydrogen energy aviation, and discloses a hydrogen energy aviation fuel storage-supply system and method based on solid hydrogen storage, and the hydrogen energy aviation fuel storage-supply system and method based on solid hydrogen storage are characterized in that the hydrogen release amount adjusting range of a hydrogen storage material is matched with the hydrogen fuel demand adjusting range of a power device by adjusting the hydrogen release catalytic reaction environment temperature of the solid hydrogen storage material; by adopting the pressure stabilizing device, the problem of flow and pressure fluctuation caused by hysteresis of hydrogen release adjustment is solved, and hydrogen release flow adjustment and engine throttling control can be carried out through the thrust rod.

The invention relates to the technical field of electric vehicle power devices and energy management, in particular to an electric vehicle-mounted direct-current two-way charging and discharging control method which comprises the steps that 1, multi-source parameters are collected in real time, and scenes are recognized; step 2, battery stress adaptive modeling: calculating a dynamic stress factor reflecting the ion migration rate in the battery based on the electrolyte temperature gradient value and the single internal resistance change value; determining the maximum allowable current change slope according to the dynamic stress factor and the battery health state; step 3, scene differentiation charging and discharging control; 4, cooperative execution and safety protection: uploading the power plan of the vehicle to a cloud end, receiving a cooperative correction factor, and calculating final execution power in combination with a temperature attenuation coefficient; and controlling the charging and discharging process according to the final execution power and the current change slope, and starting balance control when the voltage difference of the single batteries exceeds the limit. Scene adaptability, battery protection and multi-vehicle cooperative control in the charging and discharging process of the electric vehicle are systematically optimized.

The invention provides a marine power device fault diagnosis method based on multi-modal information fusion, and relates to the technical field of intelligent fault diagnosis. Comprising the steps that operation state data of equipment to be tested are collected, and the operation state data comprise vibration signals and infrared images; preprocessing the running state data to obtain preprocessed running state data; the preprocessed operation state data are input into a fault diagnosis model, a diagnosis result is obtained, and the fault diagnosis model comprises an input module, a feature extractor, a feature enhancement module and a classifier which are connected in sequence; the problems that in the prior art, multi-modal data fusion is difficult, and the fault diagnosis accuracy of the marine power device is low are solved.

An inspection method is provided during which a piezoelectric device is arranged with a specimen component of a powerplant. The arranging includes abutting the piezoelectric device against a surface of the specimen component. An electrical current is provided to the piezoelectric device at a (e.g., fixed) electrical voltage. The providing of the electrical current to the piezoelectric device energizes the piezoelectric device and induces vibrations in the component across a frequency range. The electrical current provided to the piezoelectric device during the energizing of the piezoelectric device and the inducing of the vibrations in the specimen component is monitored to determine a plurality of measured resonant frequencies of the specimen component within the frequency range. A measured resonance signature for the specimen component is determined based on the measured resonant frequencies of the specimen component.

The invention relates to the technical field of casting equipment, and discloses energy-saving furnace roller automatic cooling mold opening casting equipment which comprises an upper mold, a lower mold, an upper locking assembly, a lower locking assembly and a jacking assembly. After casting is completed, cooling liquid is continuously input into the water inlet, the outlet of the lower die cooling cavity is blocked by the sealing column, the cooling liquid is gradually accumulated in the closed lower die cooling cavity, the liquid pressure is gradually increased in a stable and controllable trend, and along with continuous increase of the pressure, the sealing plate is subjected to thrust from bottom to top, so that the sealing effect is improved. When the sealing column moves to the limiting plate, the sealing column is pushed to move upwards, in the process, the liquid pressure is not instantly exploded but is gradually increased, damage of impact force to the mold is effectively avoided, after the sealing column moves to the limiting plate, the rising pressure can push the upper mold to stably rise, and automatic mold opening is achieved. According to the mode that the liquid pressure gradually rises to complete mold opening, an additional power device is not needed, the maintenance difficulty is lowered, and meanwhile a large amount of energy consumption is saved.

The invention discloses a hydrogen energy park planning method and system based on a heuristic algorithm, and relates to the technical field of smart energy management, and the method comprises the steps: constructing a mathematical model of a park comprehensive energy system which is composed of a renewable energy power generation unit, an energy conversion device, a carbon capture and gas power device and a multi-type energy storage unit; based on the mathematical model, with the minimum annual comprehensive cost of the park comprehensive energy system as a target, establishing a cost target function, setting constraint conditions, and formulating an energy management strategy; and according to an energy management strategy, solving according to an improved taboo horse racing optimization algorithm THRO, and planning the hydrogen energy park according to a solving result. According to the invention, not only is the interior of the exterior of the environment realized, but also the maximization of economic benefits is realized.

The invention discloses a power device for posture adjustment and butt joint of large-size composite components, and particularly relates to the technical field of aircraft production, the power device comprises an adjustment driving assembly and an adsorption fixing assembly, the adsorption fixing assembly is installed at the output end of the adjustment driving assembly, the adsorption fixing assembly comprises a grabbing frame and a suction cup base, and the suction cup base is installed on the grabbing frame; a flexible adsorption ring is installed at the bottom of the suction cup base, a vacuum adsorption space is formed between the flexible adsorption ring and the suction cup base, and a back supporting positioning column is further installed in the suction cup base in a sliding mode and installed at the output end of the pushing driver. According to the invention, downward reverse support is formed on the surface of the component by means of the reverse support positioning column, so that the component cannot extrude the flexible adsorption ring due to motion inertia under the support of the reverse support positioning column in the process of adjusting the posture of the component, and the component is not easy to generate micro vibration; and therefore, the stability and the safety of adjusting the part are improved.

The invention discloses an electric power pipe cutting device for electric power construction, and relates to the technical field of electric power construction. The device comprises a rack, the rack comprises a base, a first support and second supports located on the two sides of the first support are installed on the base, a driving mechanism, a cutting mechanism, a power device and an accelerating device are arranged on the first support, the cutting mechanism comprises a plurality of cutting knives, and fixing devices are arranged on the second supports. The cutting mechanism is driven by the driving mechanism, and the cutting knife is driven to perform revolution and centripetal feeding movement around the axis of the electric power tube; and meanwhile, the power device drives the cutting knife to rotate by means of revolution of the cutting knife, the rotation speed of the cutting knife is increased through the acceleration device, and the cutting knife cuts the electric power pipe through revolution surrounding, centripetal feeding and rotation cutting movement, so that the device can enhance the cutting effect on the premise that energy consumption is not increased.

The utility model discloses an automatic product screw and nut assembling device which comprises a working table, a vibration feeding disc, a feeding track, a feeding positioning assembly, a nut assembling assembly and an assembling positioning assembly, the vibration feeding disc is fixedly installed on the working table, a discharging port of the vibration feeding disc is connected with the feeding track, a discharging port of the feeding track is connected with the feeding positioning assembly, and a discharging port of the nut assembling assembly is connected with the assembling positioning assembly. A nut assembling assembly is erected above the feeding positioning assembly, an assembling positioning assembly is arranged in the moving stroke coverage range of the nut assembling assembly, the assembling positioning assembly comprises a rotating power device, a rotating table, a clamping air cylinder and an assembling jig, and the rotating output end of the rotating power device is fixedly connected with the rotating table; two opposite clamping air cylinders are fixedly installed at the center of the upper end face of the rotating table, cylinder heads of the clamping air cylinders are connected with an assembling jig, the assembling jig is fixedly installed on the rotating table, the nut and screw assembling machine is simple in structure, two nuts and two screws can be assembled at the same time, and working efficiency is improved.

The invention discloses a tunnel digging and changing multi-head water drill and splitting rod loading and unloading device and a construction method thereof.The device comprises a splitting rod loading and unloading device body, and the splitting rod loading and unloading device body comprises a mounting frame, a splitting rod loading and unloading actuator, a splitting rod loading and unloading actuator movement driving device and a multifunctional groove; the cleavage rod loading and unloading actuator is driven by the cleavage rod loading and unloading actuator movement driving device to be movably arranged on the multifunctional groove in the first direction; the first support arm is driven by a first power device to rotate, and the second support arm is driven by a second power device mounted on the first gear cylinder to rotate; a first water milling drill actuator is installed on the side, away from the supporting rod, of the first support arm, and a second water milling drill actuator is installed on the side, away from the supporting rod, of the second support arm. According to the invention, the combined operation of drilling and splitting rod loading and unloading is realized, and the construction efficiency is improved.

An inspection method is provided during which a head of an inspection scope is inserted into an interior of a powerplant. The head of the inspection scope includes an actuator. The powerplant includes a component located within the interior of the powerplant. The head of the inspection scope is abutted against a surface of the component within the interior of the powerplant. The head of the inspection scope is preloaded against the surface of the component using a preload device located outside of the interior of the powerplant. Vibrations are induced in the component using the actuator. A vibratory response in the component excited by the vibrations is measured using a sensor to provide sensor data.

The invention belongs to but not limited to the technical field of interception nets, and particularly relates to a multi-point traction type interception net launching device which comprises a base, a power device, a launcher and an interception net. The base can be adjusted and positioned at multiple angles, the borne impact force is at least not less than 15 KN, the base is designed into a folding structure, the packaging size is reduced, and transportation and storage are facilitated; the power device adopts compressed air as a power source, an air storage chamber is filled with high-pressure air, when a switch is turned on, energy of the high-pressure air is released instantly, and huge aerodynamic force acts on the pressed area of an object, so that the object moves in an accelerated mode from a static state and is thrown out. The power device body is composed of a launching tube, an air chamber, a valve element assembly, a firing device, a trigger, a carbon fiber air cylinder, a shell and the like, the launching tube, the carbon fiber air cylinder and the shell are distributed on the two sides of the air chamber, the firing device is arranged above the air chamber, and the trigger is pressed on the firing device; the launcher is in a horn shape, and four cylindrical storage bins connected with the launching tube are arranged on the edge of the launcher.

The invention discloses a propeller hub assembly, a propeller and an aircraft, and relates to the technical field of propellers, the propeller hub assembly comprises a mounting seat, a propeller hub and a flapping hinge, the mounting seat is in driving connection with the output end of a power device, the propeller hub is used for mounting blades of the propeller, and the flapping hinge comprises an elastic bearing; and the propeller hub is rotationally connected to the mounting seat through the elastic bearing. According to the technical scheme, the maintenance difficulty and the maintenance cost of the propeller can be reduced.

The invention relates to the technical field of composite material mechanical property detection, in particular to a composite material plate compression test clamping device, which comprises a fixed seat, and a clamping mechanism, a power device and a loading assembly which are arranged on the fixed seat, the clamping mechanism comprises a first clamping assembly and a second clamping assembly which are oppositely arranged, the first clamping assembly is driven by a power device to move towards the second clamping assembly, the sample plate is clamped and fixed from the two sides of the sample plate, and the stability of uniform clamping of the sample plate is ensured. The first movable clamping plate and the second movable clamping plate are connected with the loading assembly and are driven by the loading assembly to move towards the first fixed clamping plate and the second fixed clamping plate respectively. A clamped and fixed sample plate is vertically loaded by independently controlling a loading assembly, the loading assembly comprises a downward pressing seat and a loading rod arranged on the downward pressing seat, a ball head part of the loading rod is rotationally connected with the downward pressing seat, a ball joint can compensate the installation angle deviation of the sample, and it is ensured that a compression load acts on the center of the sample plate in the vertical direction all the time.

The invention relates to a water spraying mechanism used in cooperation with an unmanned aerial vehicle. The water spraying mechanism comprises a swinging device, a liquid storage tank, a soft spraying pipe and a spraying head, the swinging device is composed of a swinging frame and a power device driving the swinging frame to swing back and forth, the swinging frame is arranged below a rack of the unmanned aerial vehicle, the liquid storage tank is used for storing liquid, a water outlet is formed in the liquid storage tank, and an electric control valve is arranged at the water outlet and used for controlling whether the water outlet discharges water or not. One end of the soft spray pipe is connected with the water outlet, the other end of the soft spray pipe is provided with a nozzle, the soft spray pipe is movably fixed to the swing frame, the water spray angle of the nozzle is controlled through swing of the swing frame, and the water spray mechanism is controlled by an unmanned aerial vehicle main control board. After the structure is adopted, the swing frame is driven by the power device to swing, so that the angle of the spray head on the swing frame is controlled to be adjusted, and the spraying effect can be the most ideal according to the use requirement.

The utility model discloses a high-precision cylindrical grinder for a lead frame. The high-precision cylindrical grinder comprises a lathe bed, and a power device, a grinding wheel assembly, a diamond grinding wheel repairing cutter, a cooling assembly, an air pump, a negative pressure pump, a dust removal box, a main shaft and a driven shaft which are arranged in the lathe bed. In the grinding wheel trimming process, compressed air generated by the air pump enters the air blowing cavity along the pipeline and the air pipe connector and then enters the blowing groove through the communicating groove, airflow is blown out after the flow speed is increased through the closing opening in the tail end of the blowing groove, and a complete annular air curtain is formed on the outer wall of a part located between the chuck and the ejector pin; high-speed moving sand particles generated during grinding wheel repairing can be effectively prevented from falling on the surface of a part, the product machining quality is improved, and then smooth production of a lead frame is guaranteed.

The utility model discloses an electric flip driver, which comprises a shell, a power device, a transmission device and an output shaft, the power device and the transmission device are arranged in the shell, the output shaft is connected with the transmission device, the shell comprises a middle shell, a front end cover and a rear end cover, and the front end cover and the rear end cover are arranged at two ends of the middle shell. A partition plate is arranged in the middle shell and divides the middle shell into two independent functional chambers, namely a power unit mounting chamber and a transmission device mounting chamber; a motor is installed in the power unit installation chamber, and the output end of the motor is connected with a reversing transmission pair capable of changing the power transmission direction of an output shaft of the motor. And the transmission device mounting chamber is used for mounting a transmission device for speed reduction and a power output shaft. In conclusion, by means of the compact structural design, the high-strength shell, the efficient transmission device, the overload protection mechanism and the accurate angle detection and feedback technology, the electric cover turning driver achieves the purpose that powerful torque is output in the small size, and the stability of the automatic cover turning function of the intelligent closestool is ensured.

An apparatus for an aircraft powerplant includes an impeller rotor and a seal runner. The impeller rotor includes a plurality of fluid circuits. Each of the fluid circuits includes a first outlet passage, a second outlet passage and an inlet passage fluidly coupled to the first outlet passage and the second outlet passage in parallel. The seal runner includes a bore, an inner guide surface and an outer land surface. The seal runner extends circumferentially about the axis and radially between the inner guide surface and the outer land surface. The bore is fluidly coupled to the first outlet passage of each fluid circuit. The inner guide surface forms a radial outer peripheral boundary of the bore. The inner guide surface radially diverges away from the axis as the inner guide surface extends axially away from the impeller rotor and to a distal end of the seal runner.

The invention relates to the technical field of ABS gear ring inner hole machining, and discloses a gear ring fixing device for ABS gear ring inner hole machining. The gear ring fixing device comprises a bottom plate, a supporting frame is fixedly connected to the top of the bottom plate, a machining table is fixedly connected to the top of the supporting frame, a gear ring inner hole machining device is installed on the surface of the supporting frame, and a limiting groove is formed in the inner wall of the machining table; a clamping part is arranged above the bottom plate; the clamping part comprises a power device, and the top of the power device is fixedly connected with the bottom of the supporting frame. The rotating disc drives the arc-shaped frame to rotate when rotating, the arc-shaped frame pushes the rolling rods to slide in the arc-shaped frame when rotating, the four rolling rods pull the sliding plate to extrude the elastic telescopic rod when moving, the elastic telescopic rod is used for limiting the sliding plate, and the stability of the sliding plate during moving is improved; when the sliding plate moves, the clamping plate is pushed to move towards the top of the machining table through the bent rod, and the ABS gear ring is clamped and fixed through the clamping plate.

A method for controlling a hybrid power plant of a vehicle provided with a heat engine and at least one electrical unit comprising an electric machine, an electrical energy source, and a power management unit, the heat engine and the at least one electric machine being mechanically connected to input shafts of a gearbox. After acquiring parameters of the at least one electrical unit, and receiving a mechanical power requirement of the vehicle, a usable electrical power that can be used by the electrical unit and at least one operating setpoint of the electrical unit are determined as a function of the parameters and the mechanical power requirement. Finally, the heat engine and the electrical unit are controlled as a function of the at least one operating setpoint in order to meet the mechanical power requirement.

The utility model relates to the technical field of material unwinding, in particular to a motor-free unwinding mechanism which comprises a mounting plate and an unwinding drum rotationally connected to the mounting plate to unwind a film material, the mounting plate is hinged to a tensioning swing arm through a first hinge shaft, and one end of the tensioning swing arm is provided with a tensioning roller located in front of the unwinding drum; the axial direction of the tensioning roller is parallel to the axial direction of the unwinding drum, the starting end of a film material is wound on the upper circumferential wall of the tensioning roller and extends downwards to be discharged, the starting end of the film material is pulled by a power device to be discharged, and the other end of the tensioning swing arm is provided with a brake part which abuts against the unwinding drum to conduct braking. The mounting plate is provided with a first elastic piece which forces the tensioning swing arm to swing till the brake piece abuts against the unwinding drum in a normal state. The unwinding mechanism has the effect of reducing the maintenance cost of the unwinding mechanism.

Methods and systems for detecting a torque transmission failure in an aircraft power plant are provided. The system comprises a hydrostatic transmission for transmitting torque between a first shaft and a second shaft using hydraulic fluid, an a failure detector including a sensor configured to detect a pressure change in the hydraulic fluid. The failure detector is configured to generate an output indicative of the torque transmission failure in response to the pressure change having crossed a threshold.

The invention relates to an electric engine, a power device and an aircraft, and belongs to the technical field of aircraft power equipment.The electric engine comprises a power motor and a liquid cooling flow path arranged in the power motor and comprises a stator support; the heat dissipation system comprises a fan, a radiator and a heat dissipation motor, an outlet of the radiator is connected with an inlet of the liquid cooling flow path, an inlet of the radiator is communicated with an outlet of the liquid cooling flow path, and the fan is used for cooling the radiator and / or the power motor; the motor rear cover is fixedly connected with the stator bracket; and the two direct-current converters are both mounted on the motor rear cover and are both electrically connected with the heat dissipation motor. The two direct-current converters convert high-voltage direct current accessed by the electric engine into low-voltage direct current capable of being used by the heat dissipation motor, and the electricity utilization requirement of the heat dissipation motor is met. Due to the redundancy design of the two direct-current converters, when one path of low-voltage power supply breaks down, the other path of low-voltage power supply can still supply power to the heat dissipation motor in a low-voltage mode, and enough fault handling time can be provided for the whole power supply system.

The invention discloses a Hall thruster and a Hall thruster regulation and control method, and relates to the technical field of power devices, and the Hall thruster comprises a hollow cathode and a Hall accelerator. The hollow cathode is used for emitting electrons, the Hall accelerator comprises an anode, a first magnet exciting coil, a second magnet exciting coil, a discharge channel and a regulation coil, the first magnet exciting coil and the second magnet exciting coil are used for generating a first magnetic field, and the first magnetic field is at least distributed in a discharge area defined by the discharge channel; the anode is used for attracting electrons emitted by the hollow cathode into a magnetic field of a discharge area for ionization and generating discharge current, and under the condition that the oscillation amplitude of the discharge current is not lower than the target amplitude, the regulation and control coil is used for generating a second magnetic field which is used for adjusting magnetic field distribution in the discharge area. The oscillation amplitude of the discharge current is lower than the target amplitude, and the excitation power supplies of the excitation coil and the regulation coil are different. The Hall thruster has a good low-frequency oscillation suppression effect.

An inspection method is provided during which a head of an inspection scope is inserted into an interior of a powerplant. The head of the inspection scope includes an actuator and a sensor. The powerplant includes a component within the interior of the powerplant. The head of the inspection scope is abutted against a surface of the component. Vibrations in the component are induced using the actuator. A vibratory response excited by the vibrations is measured using the sensor to provide measurement data. The measurement data is filtered to provide filtered data, and the filtering includes detrending the measurement data.

The invention relates to an air system for an aircraft, that includes air consumers; air sources and a network of ducts and associated control valves controlled by a control unit. The air system is characterized in that: the network of ducts and associated valves includes at least one isolation valve, arranged between an air bleed device and an air duct connecting an air conditioning pack and an auxiliary power unit; the control unit is configured to be able to determine an ideal configuration of the control valves according to the identified requirements of each consumer and a degraded configuration that makes it possible to supply air to predetermined air consumers from the available air sources when the ideal configuration is not attainable.

The application discloses an integrated intelligent grouting system, which comprises a container body, a power device, a pulp preparation device, a grouting device, a monitoring sensor device, a control analysis device and a display processing device arranged in the container body, wherein the power device is electrically connected with the pulp preparation device, the grouting device, the monitoring sensor device, the control analysis device and the display processing device; the pulp preparation device is used for preparing grouting liquid; the pulp preparation device is connected with the grouting device through a pipeline to convey the prepared grouting liquid to the grouting device; the monitoring sensor device is communicatively connected with the control analysis device and is arranged at the pulp preparation device and the grouting device; the monitoring sensor device is used for receiving a control signal sent by the control analysis device, monitoring pulp preparation data of the pulp preparation device and grouting parameter data of the grouting device in real time, and transmitting the pulp preparation data and the grouting parameter data to the control analysis device in real time; and the display processing device is communicatively connected with the control analysis device to display data information of the control analysis device.

The invention relates to a foldable tilting four-rotor aircraft concept scheme design method based on task requirements. According to the method, task demand indexes such as voyage, cruising speed, task load, cruising height and hovering height are used as input, and the total design weight, power device parameters, rotor wing geometric parameters and fuselage and wing parameters of the aircraft are determined in sequence; and performance indexes such as hovering lift limit, level flight speed, climbing performance, practical lift limit, voyage and endurance in a helicopter mode and a fixed wing mode are calculated and analyzed respectively. And performing matching judgment on a performance calculation result and a task requirement, and performing iterative adjustment on key parameters such as a paddle disc load when the task requirement is not met, so as to form a closed-loop concept design process driven by the task requirement. According to the method, the vertical take-off and landing capacity and the fixed wing cruising performance can be systematically considered in the conceptual design stage, and systematicness, repeatability and engineering feasibility of scheme design of the folding type tilting four-rotor aircraft are improved.