274 results about "Mechanical energy" patented technology

The invention discloses a blade-free wind power generation device based on vortex-induced vibration and dynamic regulation and control and a regulation and control method. The blade-free wind power generation device comprises an energy capturing mechanism, a support, a dynamic regulation and control system and a power generation mechanism. The energy capturing mechanism, the power generation mechanism and the dynamic regulation and control system are all installed on the support. The energy capturing mechanism is arranged outside the support and is blown by wind to vibrate so that wind energy can be converted into mechanical energy. The power generation mechanism is arranged in the middle of the support and converts mechanical energy into electric energy. And the dynamic regulation and control system is used for regulating and controlling the vibration amplitude of the energy capturing mechanism at different wind speeds, so that the generated power of the energy capturing mechanism is kept stable. Compared with the prior art, the blade-free wind power generation method has the advantages that more stable electric energy output is realized by dynamically regulating and controlling the tightness of the mooring rope, the efficient, stable and environment-friendly blade-free wind power generation device is provided, and the maintenance cost is lower.

The invention relates to a vehicle static tire pressure monitoring method and device and a self-powered system thereof.The method comprises the steps that vehicle state information is obtained, and whether a vehicle enters a static state or not is judged according to the vehicle state information; after it is judged that the vehicle enters the static state, the tire pressure monitoring mode is switched to a static mode from a dynamic mode, tire pressure and temperature data are collected in the static mode, and the sampling frequency of the static mode is higher than that of the dynamic mode; energy support is provided for data acquisition in a static mode through a self-power supply system, and the self-power supply system at least partially converts mechanical energy generated during tire deformation into electric energy; according to the tire pressure and temperature data, the actual air leakage rate of the tire is determined through a temperature compensation algorithm; and triggering early warning information of a corresponding level according to the actual gas leakage rate.

The invention provides an offshore wind power foundation anti-scour device which comprises a pile foundation, a conical base is fixedly connected to the position, close to the bottom, of the pile foundation, four sets of supports are fixedly connected to the bottom of the conical base, the ends, away from the conical base, of the supports are each of an arc design, and a connecting ring is installed above the conical base. The connecting ring is rotationally connected to the outer end of the pile foundation, and a protective shell is installed at one end above the connecting ring. Dual protection is formed by combining rotation kinetic energy conversion and a mechanical buffering mechanism, the arc-shaped blades rotate to drive the protective sleeve to be in linkage, the arc-shaped protruding blocks periodically extrude the spherical bodies, and impact energy is absorbed through the buffering springs; the spring assembly adopts corrosion-resistant alloy and sealing lubrication design, buffering reliability is ensured, water flow impact is converted into controllable mechanical energy consumption through the structure, the structure and blade flow guide are in synergistic effect, direct scouring force is weakened, stress concentration is avoided, the overall anti-scouring stability of the pile foundation is remarkably improved, and the service life of the pile foundation is remarkably prolonged.

The utility model relates to the related technical field of motors of electric motorcycles, in particular to a motor of an electric vehicle, which comprises a motor shaft, first magnetic steel is fixedly connected to the inner side surface of an iron ring, and second magnetic steel is fixedly connected to the inner side surface of the iron ring. According to the electric vehicle motor, through the arrangement of the first magnetic steel and the second magnetic steel, when current enters the winding of the stator 11, the winding of the stator 11 can generate a rotating magnetic field according to the law of electromagnetic induction, and under the interaction of the magnetic field, generated electromagnetic force can drive the motor shaft 1 to rotate, so that electric energy is more effectively converted into mechanical energy; the double-row magnetic steel mode improves the strength of single magnetic steel, the double-magnetic-circuit mode is adopted, the two pieces of short magnetic steel are easy to machine, the manufacturing cost is low, the product cost is reduced, and the cost performance is improved.

The invention provides a passive shock-absorbing and energy-absorbing protective tool capable of detecting impact, which comprises a shock-absorbing and energy-absorbing layer which comprises an upper fixing plate, a lower fixing plate and a plurality of buffer units arranged in an array between the two fixing plates, and the shock-absorbing and energy-absorbing layer disperses external force impact and absorbs impact energy through the buffer units; the plurality of frictional electricity energy acquisition units are arranged on the stress surface of the shock absorption and energy absorption layer in an array, and are used for converting mechanical energy generated by external force impact into electric energy through a frictional electricity effect and storing the electric energy when being impacted by the external force, and further providing the electric energy for an electric signal acquisition device; and the electric signal acquisition device is electrically connected with the frictional electricity acquisition device and is used for acquiring a frictional electric signal on the surface of the frictional electricity acquisition device and transmitting the acquired frictional electric signal to a data processing system for analysis so as to realize real-time detection and feedback of a current impact force parameter. The shock absorption and energy absorption protector can realize self-power supply and has impact detection and feedback functions.

The invention relates to the technical field of high-rise building elevators, and provides a high-rise elevator emergency air pressure slow descending device which comprises an elevator car, first wedge-shaped blocks fixed to the two sides of the elevator car, a plurality of slow descending mechanisms embedded in the two sides of an elevator shaft in a gradient mode and an air pressure bottom sinking mechanism arranged at the bottom of the elevator shaft. The multi-layer buffering mechanism combining non-Newtonian fluid damping, pneumatic pressurization and elastic supporting has the synergistic effect, the shear thickening effect of non-Newtonian fluid in the box body is activated through the stirring components (the spiral pressing pieces and the stirring blades), the fluid viscosity is greatly improved instantly when the lift car descends suddenly, dynamic damping force is formed, and the dynamic damping effect is achieved. The first air cylinder is used for compressing air to drive the air bag to expand, the reverse thrust assembly (the second air cylinder and the lower pressing plate) is combined to achieve conversion from air pressure energy to mechanical energy, secondary buffering is formed, non-linear and self-adaptive energy absorption is achieved through coupling of fluid mechanics (non-Newtonian fluid) and gas dynamics, and the device is particularly suitable for high-speed falling scenes.

This invention discloses a vibration-damping pile foundation for offshore wind power equipment installation, relating to the field of wind power equipment technology. The invention includes a platform base, with a stabilizing column installed at the bottom and a reinforcing column installed at the top. A base column is positioned at the top of the reinforcing column, and a connecting assembly is positioned at the bottom of the base column. Through the cooperation of the structural damper in the connecting assembly and the telescopic column and piston rod in the damping assembly, this invention can adaptively adjust the buffering direction when the pile foundation is subjected to multi-directional vibrations, significantly improving the response accuracy and reliability of the vibration damping system. Through the synergistic action of the turbine blades, shaft, gear set, and generator in the kinetic energy transmission assembly, the hydraulic energy of the flowing oil is converted into mechanical energy and ultimately used for power generation and recovery, achieving efficient utilization of vibration energy. Simultaneously, the oil flow resistance and the generator electromagnetic resistance together constitute a damping effect, simultaneously enhancing the vibration damping effect during power generation, thus balancing structural stability and energy reuse.

The invention provides a safety protection transport vehicle special for art paint, belongs to the field of art paint transportation, and solves the problems that existing art paint violently shakes in a tank body during transportation, the tank body cannot be automatically cleaned after transportation and the like. Comprising a transport vehicle body and three cleaning mechanisms, an anti-collision mechanism is arranged on the rear side of the upper end of the transport vehicle body, a transport tank mechanism and a folding sunshade mechanism are arranged on the anti-collision mechanism, two guide wave-proof mechanisms and three wave suppression mechanisms are arranged in the transport tank mechanism, and three turbulent flow sets are arranged between the wave suppression mechanisms and the transport tank mechanism. The device can relieve impact damage, safely transport art paint, control the temperature of the tank body, ensure the transportation environment of the tank body, convert kinetic energy of shaking of the art paint into mechanical energy, effectively inhibit shaking of the art paint, disturb the flowing direction of the art paint, weaken shaking of the art paint, spray a diaphragm agent on the tank body and form a diaphragm layer, and can be used for spraying the art paint on the tank body. And the tank body can be cleaned in all directions, so that the device is clean, environment-friendly, efficient and convenient.

The invention relates to the technical field of crossing of mechanical engineering and thermodynamics, in particular to novel intermittent piston equipment. The device is characterized by comprising a gas-liquid cylinder system, a piston system, a feeding system, a discharging system and a cooling system, wherein the gas-liquid cylinder system comprises a plurality of partition plates with holes and can further comprise a plurality of monitoring control assemblies, and the piston system comprises a plurality of piston push plates with holes and a plurality of piston driving mechanisms and can further comprise a plurality of monitoring control assemblies. The cooling system comprises a plurality of thermal contact modules, a plurality of heat transfer modules and a plurality of heat dissipation terminals, and can further comprise a plurality of monitoring control assemblies. A perforated partition plate, a perforated piston push plate and a monitoring control assembly are additionally arranged in an existing piston equipment technology, meanwhile, piston pushing and cooling system cooling integrated intermittent operation is adopted, the position of a piston and fluid pressure are monitored in real time, a driving signal is dynamically adjusted, and the working efficiency is improved. Efficient conversion between mechanical energy and gas pressure energy, hydraulic energy or fluid heat energy and precise control over the fluid temperature are achieved, the compression, expansion and mass transfer and heat transfer efficiency of fluid in equipment is greatly improved, the technical application scene is wide, and the technical application value is high.

The invention discloses air conditioning equipment and a motor parameter correction method, and relates to the technical field of air conditioners, and the air conditioning equipment comprises a motor which is configured to operate based on values currently corresponding to motor parameters so as to convert electric energy into mechanical energy and complete a refrigeration working condition or a heating working condition; the controller is configured to control the rotating speed of the motor to reach a preset rotating speed when the working state of the motor is in a closed-loop state; for the to-be-corrected motor parameters, calculating a steady-state current error between the standard working current corresponding to the motor parameters and the actual current; the steady-state current error is used for representing operation deviation of motor parameters when the motor operates in a steady state; based on the steady-state current error and the standard maximum current, correcting the initial value of the motor parameter to obtain a target value; the standard maximum current is the maximum current borne by the motor when a press in the air conditioning equipment runs. By adopting the air conditioning equipment, the parameters of the motor can be corrected on line, so that the corrected target value fits the actual value when the motor runs.

The invention discloses a high-efficiency energy-saving motor, and belongs to the technical field of motors, the high-efficiency energy-saving motor comprises a casing and an operation mechanism arranged in the casing, and a main shaft penetrating through the inner walls of the two ends of the casing is arranged in the operation mechanism; the rotating mechanism is arranged on the two sides of the operating mechanism and comprises two bearings installed on the outer wall of the main shaft in a sleeving mode, two positioning rings are fixedly installed on the outer wall of the main shaft located between the two bearings, the positioning rings and the blades are arranged on the outer wall of the main shaft, and I-shaped wheels are rotatably installed in movable grooves of the outer rings of the blades and embedded into the rails; lateral stress borne by the bearing can be effectively dispersed, bearing dislocation is avoided, and the problem that friction force is increased due to dislocation is solved; meanwhile, a lubricating mechanism is arranged, a main channel on the inner wall of the main shaft is connected with branch channels among all parts, and under centrifugal fit during rotation of the main shaft, a bearing, an I-shaped wheel and the like can be continuously lubricated, the situation that friction force is increased due to lack of maintenance is reduced, then mechanical energy loss is reduced, heat generation is reduced, and energy conservation and consumption reduction are achieved.

The invention relates to the technical field of fan blade hubs, in particular to an axial flow fan blade gradient porosity lightweight hub structure. Comprising a hub body and axial flow fan blades, the hub body comprises an annular wall, and arc-shaped grooves are formed in the annular wall in the circumferential direction; the arc-shaped groove comprises a mounting groove for mounting the axial-flow fan blade and a noise reduction groove without the axial-flow fan blade; grid-shaped connecting ribs are arranged at openings of the noise reduction grooves. The elastic pieces are arranged in the back cavities of the noise reduction grooves, the wave-shaped elastic pieces are arranged in the back cavities of the noise reduction grooves, captured vibration mechanical energy is converted into heat energy to be dissipated through the structural damping effect of the elastic pieces, and noise is restrained from the source; meanwhile, the elastic sheet is excited through the side face of the micro jet flow generated by modulating the airflow through the connecting rib grid, and the elastic sheet and the Helmholtz resonator composed of the back cavity volume and the rectangular hole opening act synergistically, specific aerodynamic noise is actively absorbed and offset, and therefore on the premise that the structural strength is guaranteed, the purposes of broadband noise reduction and light weight are achieved synergistically.

The invention discloses a generator set and a vehicle, the output end of an engine is connected with the input end of a generator, the output end of the generator is connected with the speed increasing input end of a gear speed increasing device, and the speed increasing output end of the gear speed increasing device is connected with a flywheel of a flywheel mechanism. Power of the engine can be transmitted to a flywheel of the flywheel mechanism through the generator and the gear speed increasing device, and the power is converted into rotation mechanical energy of the flywheel to be stored. The working rotating speed of the speed increasing output end of the gear speed increasing device is larger than that of the speed increasing input end, and the rotating speed of the flywheel and the stored energy are improved. The mechanical energy which can be stored by the flywheel is greatly increased so as to meet the energy supply requirement of a high-power vehicle, the space occupied by the gear speed increasing device and the flywheel is small, and the integration level of the vehicle can be improved while the energy supply requirement of the high-power vehicle is met. The technical problem that the vehicle integration degree is difficult to improve while the energy supply effect on the vehicle is guaranteed is solved to a certain extent.

The invention discloses a dynamic management and control system and method for energy of a power transmission system of a heavy commercial vehicle, and belongs to the technical field of energy recovery of heavy trucks, and the dynamic management and control system comprises a power takeoff which is used for extracting rotary power from a gear train of a transmission as required and providing mechanical energy input for a generator; the electromagnetic valve is used for receiving the electric signal instruction of the control unit and driving the clutch action of the power takeoff by controlling a gas circuit, so that the power takeoff is connected with or separated from a power output gear of the transmission; the generator converts the mechanical energy input by the power takeoff into electric energy and sends the electric energy to the energy storage device; and the control unit is used for acquiring state parameters of the heavy commercial vehicle in real time, judging the current operation condition of the vehicle and the intention of a driver based on the state parameters, and generating a decision instruction based on the operation condition and the intention of the driver. The defects that in the prior art, the energy recovery function and the auxiliary braking function are separated, efficiency is not high, and control is not precise are successfully overcome.

The present application relates to the field of engineering machinery, and discloses a hydraulic walking system, a control method of the hydraulic walking system and a hydrostatic loader, the system comprising: a plunger pump, a front axle motor, a rear axle motor and a shunt collector valve; the plunger pump is used for forward movement or reverse movement based on hydraulic oil; the shunt collector valve is connected with the plunger pump and is used for adjusting the flow direction of the hydraulic oil, so that the hydraulic oil flows into the front axle motor and the rear axle motor in parallel or in series; the front axle motor and the rear axle motor are connected with the shunt collector valve and are used for converting the hydraulic energy of the hydraulic oil into mechanical energy. The present application can realize the forward and reverse rotation of the hydraulic walking and the series and parallel connection of the motor, flexibly adjust the flow direction of the hydraulic oil, thereby providing different walking speeds and tractive forces, so that the small hydrostatic loader can normally operate under different working conditions.

The invention discloses a pressure reducing device for reducing downhole annulus pressure, which comprises a shell coaxially arranged in a shaft, the shell is of a hollow structure with an accommodating cavity, a fluid inlet and a fluid outlet of the shell are respectively communicated with an inlet and an outlet of the shaft, and fluid can flow along the axial direction of the shell; the sealing piece is arranged outside the shell to seal an annular space between the shaft and the shell, so that fluid can only flow through the fluid inlet of the shell; the screw motor is arranged in the shell, and the screw motor is configured to convert pressure energy of the fluid into mechanical energy and output torque and rotating speed; and the spiral blade is arranged in the shell at the downstream of the screw motor, and the spiral blade is in transmission connection with the screw motor. The method has remarkable advantages in the aspects of reducing the ECD, expanding the safety density window, prolonging the drilling depth, simplifying underground control, improving the operation reliability and the like, and a brand-new technical solution is provided for economical and efficient drilling of deep wells, ultra-deep wells and narrow-density window stratums.

The utility model discloses a hard alloy cutting device, which belongs to the technical field of hard alloy and comprises a water tank, semi-closed guide plates are fixedly connected to the front end and the rear end of the right side of the top of the water tank, an alloy body is placed on the inner sides of the two semi-closed guide plates, and an electric telescopic rod is fixedly connected to the inner side of the water tank. One end of the electric telescopic rod is fixedly connected with a connecting column, and one end of the connecting column is fixedly connected with a connecting plate. The motor is started, electric energy is converted into mechanical energy through the motor, the cutting blade is driven to rotate, when the alloy body makes contact with the cutting blade, the alloy body is cut through the cutting blade, meanwhile, the water pump is started, water in the inner cavity of the water tank is sucked through the water pump, and the water is conveyed to the second pipeline; and water is conveyed to the spraying cover through the second pipeline, and is sprayed to the cutting position through the spraying cover, so that the cutting position is cooled, and the cutting quality is improved.

This invention relates to the field of robotics, and discloses a method and system for adaptive torque control of robot transmission components. The method includes: acquiring input electrical parameters and motion state parameters; determining energy characterization values ​​and mechanical energy changes; calculating the energy balance deviation between the energy characterization values ​​and mechanical energy changes; accumulating the energy balance deviation to obtain a cumulative deviation value; identifying the evolution characteristics of the cumulative deviation value to determine the current state of the actuator; and adjusting the output torque control parameters of the actuator based on the evolution characteristics only when the current state is determined to be an external load change state, to compensate for the influence of the external load on the actuator. This invention intelligently distinguishes between external load changes and internal vibration / dissipation by monitoring the "imbalance" of energy flow, and performs torque compensation only when an external load change is confirmed, thereby achieving more precise and robust adaptive control.

The utility model discloses an efficient sealing oil hydraulic cylinder, and relates to the technical field of oil hydraulic cylinders, the efficient sealing oil hydraulic cylinder comprises a cylinder body, a cylinder cover and a plug rod, the plug rod used for outputting mechanical energy is installed in the cylinder body, a piston head is installed on one side of the plug rod, and the cylinder cover is arranged at the joint of the plug rod and the cylinder body; a sealing structure is arranged at the communication position of the cylinder cover and the piston rod, a lower rubber layer is arranged at the contact position of the sealing device and the piston rod, an inner lip is arranged above the lower rubber layer, a supporting layer is arranged on the side, away from the piston head, of the inner lip, and an upper rubber layer is arranged below the cylinder cover. An outer lip connected with the supporting layer is arranged below the upper rubber layer, and an oil filling layer for buffering oil pressure is arranged between the inner lip and the outer lip. By means of double sealing of the inner lip and the outer lip and the design of the double-layer rubber ring, hydraulic oil leakage is effectively prevented, and the sealing performance is improved.

The invention provides a rail vehicle front end energy absorption protection system, which belongs to the technical field of rail vehicles, and is characterized in that various modules are integrated at the front end of a rail vehicle, a multi-source sensing module is started, and information such as front obstacles, vehicle vibration and rail magnetic field signals is collected; the intelligent control module performs cross validation on the multi-source signal, calculates a collision probability and estimated collision time, and outputs a corresponding collision level; during low-load collision, the bionic energy absorption unit is unlocked; during medium load collision, the electromagnetic hydraulic buffer and the particle damping module are started; during high-load collision, the anti-climbing device and the shape memory alloy restraint layer are overlapped and started; the energy recovery module converts hydraulic energy into mechanical energy. According to the front-end energy absorption protection system for the railway vehicle, different load requirements are met through graded energy absorption, the high-risk protection effect is enhanced through auxiliary protection, economical efficiency and practicability are improved through energy recovery and automatic reset, and the reliability of collision protection is remarkably improved.

The present application relates to a kind of multi-stage gravity potential energy driven water tunnel test device, belong to water tunnel test technical field.The multi-stage gravity potential energy driven water tunnel test device is divided into main drive flow channel and auxiliary energy release flow channel from the water body of high-level reservoir;Water body that flows through auxiliary energy release flow channel drives the mechanical energy generated by energy extraction mechanism, is transmitted to energy injection mechanism by transmission mechanism, and is converted into the propulsion work to the water body in main drive flow channel, to realize the gravity potential energy of auxiliary energy release flow channel water body is transferred and superimposed to the water body in main drive flow channel, finally from test pipeline obtains the flow velocity higher than single gravity potential energy driven can reach.The device by the gravity potential energy of auxiliary energy release flow channel water body is transferred and superimposed to main drive flow channel, additionally increases the kinetic energy for the water body in main drive flow channel, to make test pipeline obtain the flow velocity higher than only by single gravity potential energy driven can reach, overcome the flow velocity of traditional gravity type water tunnel limited bottleneck.

The utility model discloses a damping plate double-sided gluing device, which belongs to the technical field of damping plate production and comprises a base box and a dispensing head, vertical plates are fixedly connected to two sides of the top of the base box, a motor is fixedly mounted on the top of the base box and located on the outer side of the left vertical plate, and the output end of the motor is fixedly connected with a concave frame. The inner wall of the top of the concave frame is in threaded connection with a pressing plate, the bottom of the pressing plate is movably connected with a second bearing, the bottom of the second bearing is fixedly connected with a fastening bolt, and the concave frame on the inner side of the vertical plate on the right side of the top of the base box is movably connected with a first bearing through a rotating rod. Electric energy is converted into mechanical energy through the motor, the concave frame is driven to rotate, the damping plate is driven to rotate through the concave frame until the other face of the damping plate is turned over and then stops moving, the other face of the damping plate can be glued again, limiting of the damping plate does not need to be relieved, the damping plate can be turned over, and the production efficiency is improved. And the working efficiency is improved.

The invention provides a gas turbine power generation and propulsion integrated system based on hydrogen and oxygen preparation and combustion, and belongs to the technical field of power supply devices. The device comprises an oxyhydrogen storage part, a fuel gas generator, a turbine part and a motor part which are connected in sequence, hydrogen and oxygen fuel stored in the hydrogen and oxygen storage part is supplied to the fuel gas generator for combustion, generated gas is conveyed to the turbine part to push turbine blades in the turbine part to rotate to generate mechanical energy, the turbine blades rotate to drive a motor rotor of the motor part to rotate, the mechanical energy is converted into electric energy through electromagnetic induction, and power generation is achieved. According to the invention, a turbine power generation system formed by the hydrogen and oxygen storage part, the gas generator, the turbine part and the motor part is used for generating power, and the generated power is used for supplying power to satellite airborne equipment, so that the power can be efficiently generated at high speed and high power, and the power can be efficiently and quickly supplied to satellite airborne high-power electric equipment when a target needs to be attacked.

A horizontal axis rotational force generator is introduced, utilizing fluid flow to drive motion. The system includes one or more rotating mechanisms, each with multiple blades positioned at equal phase angle intervals. These blades revolve around a horizontal shaft while simultaneously rotating around parallel sub-shafts when exposed to fluid pressure, producing torque on the main shaft. A support structure holds the shaft and allows stable axial rotation at designated heights. A gear interlocking unit adjusts angular velocities, shifting blade revolution speeds to half their value in the opposite direction, and transfers the result to the main shaft. As blades pass vertically above the shaft, their orientation is controlled so that surfaces align horizontally or vertically relative to the shaft. This ensures blades consistently generate maximum rotational force on the horizontal plane, efficiently converting fluid flow into usable mechanical energy.

The invention relates to the technical field of part polishing, in particular to a precision mechanical part machining polishing machine which comprises a base and a rotating base arranged in the center of the base, and four clamping assemblies are connected to the outer side of the rotating base; the clamping assembly comprises a driving seat connected with the rotating base, and a left clamping plate and a right clamping plate which can move oppositely to clamp a workpiece are arranged on the driving seat. Through cooperation of the rotary base and the four-station design, continuous automatic production of feeding, polishing, detecting and discharging is achieved, and the production efficiency is improved; through the speed reduction transmission device structure, the polishing roller can be synchronously driven to rotate at a high speed and indirectly drive a workpiece to rotate at a low speed only through a single driving motor, efficient polishing is achieved through the rotating speed difference, the number of power sources is reduced, and the equipment manufacturing cost is reduced; through mechanical cooperation of the energy storage assembly and the arc-shaped sliding rail, mechanical energy in the polishing process is stored and released in the detection stage, and a workpiece is driven to rotate at a constant speed so as to complete high-quality detection.

The invention discloses a combined type self-adaptive variable-diameter supporting wheel mechanism for pipeline detection. The combined type self-adaptive variable-diameter supporting wheel mechanism comprises a base, an elastic assembly, a fork rod and an odometer wheel, the fork rod and the base are arranged in a relative sliding mode and connected through an elastic assembly. The odometer wheel is arranged at one end of the fork rod away from the base. A complex electric control system is abandoned, the pure mechanical passive self-adaption principle is adopted for the first time, the core driving force of the mechanism directly comes from interaction force between the inner wall of the pipeline and the supporting wheels, and through the spring which is a simple elastic element, the self-adaption function is achieved. The mechanical energy of pipe diameter change and obstacle impact is directly converted into the adaptability and obstacle crossing action of the mechanism, the crossing from the need of intelligent control to the natural mechanical intelligence is realized, the structure is fundamentally simplified, the control delay is eliminated, and the stability under severe working conditions is greatly improved.

The invention discloses a steam extraction and condensation type steam turbine stable in operation, and belongs to the field of steam turbines.The steam extraction and condensation type steam turbine stable in operation comprises a base, a bearing shell is fixedly connected to one side of the top of the base, a steam input pipe is fixedly connected to the top of the bearing shell, a bearing seat is fixedly connected to one side of the bearing shell, and a rotating shaft is rotationally connected to the interior of the bearing seat; a stabilizing assembly used for reducing vibration of the steam turbine is fixedly connected between the top of the base and the bearing shell and comprises a plurality of fixing columns fixedly connected into the stabilizing assembly at equal intervals. A pure mechanical stable assembly composed of a fixing column, a sliding balance weight sleeve, a damping ring and a spring is arranged and is in linkage with a rotating shaft or a bearing shell through a connecting arm, a reciprocating plate and the like, harmful vibration needing to be dissipated in a traditional design is converted into reciprocating mechanical energy capable of being utilized, an external power source or complex control is not needed, and the energy consumption is reduced. Therefore, the real-time and self-adaptive suppression of the vibration of the rotor can be realized.

The application discloses an intelligent load matching electro-hydrostatic actuator and a control method thereof. The device comprises a controller, a variable speed motor, a constant displacement pump, an oil supply module, an actuator module, and a liquid control check valve, an electric control throttle valve and a pressure sensor symmetrically arranged on two load oil paths. The core is that the controller can judge the working condition of the actuating cylinder in the forward load or reverse load according to the pressure signal difference detected by the two pressure sensors, and independently control the opening of the two electric control throttle valves. In the forward load working condition, the mechanical energy of the load is converted into the heat energy of the hydraulic oil to be discharged by adjusting the opening of the non-driving side throttle valve. The application effectively solves the problems of large volume and difficult heat dissipation of the controller caused by the built-in discharge resistor, reduces the volume and size of the controller of the electro-hydrostatic actuator, and realizes the miniaturization and intelligentization of the device.

A rotating electric machine (100) in an internal rotor design for converting mechanical energy into electrical energy or vice versa, comprising: - a stator (2), - a rotor (4) inside the machine (100) which is enclosed by the stator (2) and is or can be arranged non-rotatably on or attached to a rotatably mounted drive / output shaft (5) such that the drive / output shaft (5) including the rotor is rotatable about an axis of rotation R, and - a rotor cooling device designed to guide cooling medium along at least a part of the inner surface and / or through at least a part of the interior of the rotor (4) for heat dissipation mainly by thermal convection or to bring it close to the inner surface of the rotor (4) for heat dissipation by thermal radiation, wherein the drive / output shaft (5) has a free shaft end (5a) and the rotor (4) is or can be fitted onto the free shaft end (5a) and the rotor (4) is cup-shaped.wherein the rotor cooling device further comprises a stationary hollow cooling nozzle (3) extending in the direction of the rotational axis R of the rotor (4) from the open side of the cup-shaped rotor (4) into the interior of the cup and having, at its end (3a) facing away from the rotor (4), connected or connectable to a cooling medium source for supplying cooling medium, and having a cooling medium outlet (19) for discharging the cooling medium to the outside of the machine, wherein the end (3b) of the cooling nozzle (3) facing the rotor (4) is open and rib- or blade-like projections (7) and a vane (8) for forced cooling are located on the outside (3c) of the cooling nozzle (3).

A turbine unit (674) captures energy from a fluid flow (244). It includes at least one turbine (100) arranged along a turbine stack axis (454), each turbine (100) having a central portion (102) and blades (104) extending radially and rotating about the central portion (102). Each blade (104) includes at least one airfoil (116) movable between open and closed configurations; in the closed configuration, the airfoil forms a surface oblique to the fluid flow (244) to convert kinetic energy into rotation. A gearbox assembly (979) coupled to the turbine (100) converts rotation into mechanical power and includes an input shaft, gears responsive to a first control signal to vary gear ratio, and an output shaft. At least one sensor (983) generates operational data used by a control system (981). A fluid-flow control element (666) near the turbine (100) regulates fluid flow (244) in response to a second control signal.