27 results about "Work output" patented technology

The invention discloses an expansion generator set system and method for black start of a compressed air energy storage power station. The expansion generator set system is mainly composed of an air expansion machine, a generator, a starting valve, a hydraulic control valve, an anti-wear hydraulic oil pump, an anti-wear hydraulic oil tank, a speed change gear box and various pipelines. The air expansion machine can selectively and directly drive the generator and the anti-wear hydraulic oil pump, and can output mechanical work to the generator and the anti-wear hydraulic oil pump after speed change of the speed change gear box. Rotor supports of the expansion machine, the generator and the oil pump all adopt rolling bearings, so that lubricating oil station configuration is eliminated or related power consumption is reduced. The rotating speed of the expansion generator set can reach 90% when the starting valve is fully opened in the impulse rotating process, and the hydraulic control valve connected with the expansion generator set in parallel needs to be used for precise and quick response control of the rotating speed and the power required by follow-up grid connection. The black start requirement of compressed air energy storage power stations of 100 MW and higher power levels can be met, and the whole machine is simple in structure, high in reliability and easy to maintain.

The application discloses a kind of active support control method, device and medium of wind turbine, it is related to wind turbine active support control technical field, for the problem that current power grid voltage fault cannot identify power grid parameter, and then active support control effect is not good, provide a kind of active support control method of wind turbine.The voltage and current data of grid-connected point before and after power grid failure are collected to determine the parameter change of power grid before and after voltage failure.Furthermore, the short-circuit point position, short-circuit current and transition resistance value are identified, and the determination of all unknown quantities in the wind turbine grid-connected point voltage model after failure is realized.At this time, all parameters in the wind turbine grid-connected point voltage model after failure are known, the equivalent voltage and equivalent impedance of the power grid after failure can be determined, and the power grid parameter identification during failure is completed.Based on the identified power grid parameters during failure, the active and reactive output current optimal proportion of wind turbine can be redesigned, and better support for power grid voltage recovery effect is brought.

The invention provides a wind turbine generator self-adaptive network construction method and device, and the method comprises the steps: collecting the related operation state data of a wind turbine generator based on the active output power, the reactive output power, the rotor speed and the frequency deviation in real time, and comprehensively and accurately mastering the operation conditions of the wind turbine generator at different moments. A small signal stability analysis model and a mapping relation are determined based on state-space equations of a machine-side converter, a grid-side converter and an energy storage converter of the wind turbine generator, so that the model can more accurately describe dynamic characteristics of the wind turbine generator in different converter working states, and the stability of the wind turbine generator in different operation conditions is evaluated. The virtual inertia correction, the damping coefficient correction and the voltage droop coefficient correction required by network construction are obtained through analysis, then adaptive control parameters and converter modulation signals are determined, the running state and power output of the converter can be adjusted in real time according to the change of the power grid frequency, and virtual inertia, damping and voltage support are provided.

The present invention relates to a relay valve (18) for an electropneumatic control device (1), comprising: a pneumatic control input (20) which is connected to a control chamber (42) of the relay valve (18), a working output (28) which is connected to a working chamber (58) of the relay valve (18), at least a first throttling element (30) that connects the working chamber (58) and the control chamber (42), a supply inlet (16) which is connected to a storage chamber (60) of the relay valve (18), a double seat valve (50, 54) with at least one inlet seat (54) and at least one outlet seat (50), a relay piston (46) for actuating the double seat valve (50, 54), wherein the working chamber (58) is connected to a vent (56) when the outlet seat (50) is open and to the storage chamber (60) when the inlet seat (54) is open, and wherein the relay valve (18) has at least one second throttling element (65, 65', 65'', 65'''', 65'''', 65'''''') which is arranged such that the working chamber (58) and the vent (56) are in throttled flow communication with each other at least in an intermediate position of the relay piston (46) between the vent position and the ventilation position via the at least one second throttling element (65, 65', 65'', 65'''', 65'''', 65'''''') and that the at least one second throttling element (65, 65', 65'', 65'''', 65'''', 65'''''') is completely closed in the ventilation position.

The invention discloses a permanent magnetic doubly-fed generator set multivariable control method for a high-temperature adiabatic compressed air energy storage system, relates to the technical field of power generation technology coordination control, and aims to solve the problems of high input and output variable coupling degree and large system internal disturbance in the energy release control process of the high-temperature adiabatic compressed air energy storage system. According to the technical scheme, the method is characterized in that variable-speed and constant-frequency operation in the energy release process is achieved through the characteristics of a permanent magnetic doubly-fed generator, and a larger turbine rotating speed adjustment feasible region is provided for sliding pressure operation in the energy release process; and meanwhile, decoupling among the rotor winding current frequency in the generator, the turbine valve opening, the output power and the output frequency is realized through a BP neural network inverse model, and the flexibility and the stability of the system are improved.

The invention discloses an energy conversion method and device based on a gravity field gas vertical pressure gradient, and relates to the technical field of gravity field gas thermodynamic cycle and energy conversion. Comprising the steps that a closed circulation channel composed of a gas conveying power unit, a gas conveying expansion unit, an acting output unit and a gas backflow unit is filled with working gas; the working gas at the low position is driven to rise in the vertical direction, adiabatic expansion and acceleration are carried out under the pressure decreasing condition, and gas internal energy and pressure energy are converted into kinetic energy; the high-speed gas is guided into the acting output unit to drive the generator set to generate electricity; and the acting gas naturally settles and is compressed in the backflow channel by virtue of gravity, exchanges heat with the environment in the settling process to recover the initial state, and then enters the power conveying unit again. According to the invention, a closed circulating acting path utilizing the vertical pressure gradient of the gravity field is constructed, and the comprehensive utilization efficiency of low-grade heat energy and gas pressure energy is improved.

The invention discloses a multivariable control method for a two-stage turbine excitation generator set, relates to the technical field of coordination control of power generation technologies, and solves the problems of local linearization of a nonlinear system and strong coupling of input and output variables in an energy release adjustment process of a high-temperature adiabatic compressed air energy storage system. According to the technical scheme, an alternating-current excitation generator set is adopted to widen the adjusting range of the turbine rotating speed, the turbine rotating speed of the high-temperature compressed air energy storage system is variable, and the adjusting capacity in the energy releasing process is improved; meanwhile, decoupling among the rotating speed of a generator rotor, the opening degree of a turbine valve, output work and output frequency is achieved through a TS fuzzy neural network model, the coupling degree of the system and an alternating-current excitation generator set is reduced, more efficient and stable generated power and frequency output are achieved, and therefore the flexibility of the high-temperature adiabatic compressed air energy storage system is improved.

The utility model discloses a dual-output hybrid power device, which relates to the technical field of vehicle power and comprises an engine, a power output component is mounted on the engine, a generator shell is fixedly mounted on the engine and positioned at the power output component, a power generation rotating shaft is rotatably mounted on the generator shell, and a power generation rotating shaft is mounted on the generator shell. One end of the power generation rotating shaft is fixedly connected with the power output component; a plurality of circumferentially arranged stators are mounted in the generator shell, a plurality of rotors are mounted on the power generation rotating shaft, and the stators or the rotors are of excitation structures; an operation output machine shell is fixedly installed on the generator shell, and an operation output shaft connected with the power generation rotating shaft is rotationally installed on the operation output machine shell. The traction and operation requirements can be met at the same time, and power conversion is convenient.

To enable efficient review of work using tag information shared by a plurality of users.SOLUTION: An information processing apparatus 1 includes: an acquisition unit 131 which acquires work information regarding work of a group including a plurality of users; a first generation unit 132 which inputs the work information to a machine learning model to generate first feedback information including evaluation of the work output by the machine learning model; a tag information receiving unit 133 which receives tag information to be shared in the group, the tag information including character strings regarding the work, from each of the users; a second generation unit 134 which inputs the first feedback information and the tag information to the machine learning model to generate second feedback information including evaluation of the tag information output by the machine learning model; and a display control unit 136 which causes information terminals used by the users, respectively, to display the second feedback information.SELECTED DRAWING: Figure 2

The invention relates to a pneumatic position control system for an actuator member, comprising a pneumatic actuator, which comprises the actuator member and a first pressure chamber and a second pressure chamber, and a valve device, which has a first working output pneumatically connected to the first pressure chamber and a second working output pneumatically connected to the second pressure chamber, and is designed to separately adjust respective compressed air mass flows at the working outputs as part of the position control, in order to pneumatically actuate the first pressure chamber and the second pressure chamber and thus position the actuator member, wherein the pneumatic system has a position control device, which is designed to generate a mass flow specification signal underlying the compressed air mass flows, and a mean-pressure control unit which is designed to carry out pressure control of a mean pressure of the first pressure chamber and second pressure chamber as part of the position control.

An electric submersible pump (ESP) assembly. The ESP assembly comprises a centrifugal pump assembly comprising a plurality of pump stages, wherein each pump stage comprises a diffuser and an impeller, wherein the impeller comprises a plurality of impeller vanes, wherein each impeller vane comprises an impeller vane trailing edge that attaches to a shroud of the impeller at a location downstream of a location where the impeller vane trailing edge attaches to a hub of the impeller, and wherein the diffuser comprises a plurality of diffuser vanes, wherein each diffuser vane comprises a diffuser vane leading edge that attaches to a shroud of the diffuser at a location downstream of a location where the diffuser vane leading edge attaches to a hub of the diffuser.

This patent presents a method for instantaneous optimal control of a parallel hybrid power system in aviation. Based on the fact that the parallel hybrid system can operate in either electric or generator mode via an electric motor / generator, it achieves engine operating point shifting and system efficiency optimization. At a certain speed, when the engine power is greater than the propeller's required power, the equivalent fuel consumption rate in the charging state is calculated by dividing the fuel consumption per unit time by the total useful power, considering that the current charging energy will be output as mechanical work in the future. When the engine power is less than the propeller's required power, the electric motor consumes electricity to compensate for the power difference. The equivalent fuel consumption rate in the discharging state is calculated by dividing the current electric motor consumption by the average equivalent fuel consumption in the previous charging state, considering that the current electric motor consumption is the average equivalent fuel consumption in the previous charging state. Considering the generator or generator phases, the system's equivalent fuel consumption rate at the current speed can be obtained. The engine power corresponding to the minimum value in the equivalent fuel consumption rate curve is the optimal engine power for the system's instantaneous efficiency in the current state, thus confirming that the power allocation between the engine and the electric motor / generator is the optimal power allocation for the parallel hybrid system's instantaneous efficiency in the current state.

The dual-motor transmission system comprises a first output shaft, a first input shaft, a second input shaft and a first middle shaft, the first middle shaft comprises a first shaft section and a second shaft section which are coaxially arranged in a disconnected mode, and a planetary gear mechanism is arranged between the first shaft section and the second shaft section; a sun gear and a planet carrier of the planetary gear mechanism are arranged on the first shaft section and the second shaft section respectively, a first gear set in meshing transmission is arranged between one of the first input shaft and the second input shaft and the first shaft section, and the other one of the first input shaft and the second input shaft is in transmission connection with a gear ring of the planetary gear mechanism. And a first gear switching device is arranged between the second shaft section and the first output shaft, so that the working conditions of stable operation output rotating speed and large-traction walking can be met at the same time.

Methods and systems related to power generation and thermal management for combined cycle architectures. In particular, methods and apparatus for cooling a surface on an aircraft and generating power are provided, the methods and apparatus including propelling the aircraft at a speed of at least 3 Mach causing the surface to heat up aerodynamically. A first working fluid is circulated through a first fluid circuit, the circulation heating the first working fluid by a heat-absorbing section that is thermally coupled to the surface, and the first working fluid is expanded in a first heat engine to generate a first work output. A second fluid circuit has a second working fluid that receives heat from the first working fluid, and a second heat engine that generates a second work output. The first and second work outputs are operatively coupled to first and second power generators, respectively, to power primary or auxiliary systems on the aircraft.

The utility model discloses a rail sliding type transfer trolley and belongs to the technical field of the packaging industry. The utility model solves the problems that the existing reciprocating type mobile equipment for the packaging industry can turn on one side when unbalance loading occurs, and large potential safety hazards exist in the production process. A driving belt wheel and a driven belt wheel are arranged at the two ends of a rack respectively, the executing end of a motor is connected with the driving belt wheel, the driving belt wheel and the driven belt wheel are connected through a synchronous belt, the synchronous belt is connected with a working output end, the working output end is connected with a grooved wheel set, and the grooved wheel set is arranged on the rack through a guide rail on the rack. The working output end is connected with an anti-rollover wheel set, and the anti-rollover wheel set makes contact with the bottom of the machine frame. According to the working output end of the rail sliding type transfer trolley, the stability of the working output end in the moving process is ensured through the cooperation of the grooved wheel set on the upper portion and the guide rail and the anti-rollover wheel set at the bottom, and the dangerous situation of rollover caused by unbalance loading is avoided.

The application discloses a three-position mechanism with a quick opening function, comprising a rack, a closing device, an opening device, a grounding device, an opening tripping device, an energy storage device, a motor driving module and a main shaft device arranged on the rack, the motor driving module is detachably arranged on the rack, a transmission mechanism is arranged between the closing device and the energy storage device, the transmission mechanism comprises a double cam, the energy storage device releases energy to drive the closing device to close through the double cam, the opening device is linked with the opening tripping device, the opening tripping device is linked with the closing device, the closing device and the grounding device are respectively linked with the main shaft device, and the main shaft device outputs closing and opening torque and grounding torque to a load switch, the traditional component design mode is changed, the three-position mechanism is light and beautiful under the condition of meeting the functional requirements, the closing power output efficiency is improved, and the artificial operation force is reduced.

The application discloses a novel multi-mode variable cycle two-stroke piston engine, which is used for an aviation compound power system of shaft power and gas output modes and belongs to the technical field of aero-engines. The novel multi-mode variable cycle two-stroke piston engine comprises a spark plug, a cylinder, a scavenging port, a piston, a crankcase, a crankcase exhaust port, a crankcase exhaust electric control one-way valve, an air inlet, a main exhaust port, a supplementary combustion chamber, a supplementary combustion agent inlet, a cylinder top exhaust port and a cylinder top exhaust electric control one-way valve. The novel multi-mode variable cycle two-stroke piston engine is provided with an exhaust pipe provided with an electric control one-way valve at the top of the cylinder and the crankcase based on a conventional two-stroke engine. In the shaft power output mode, the cylinder top exhaust port and the crankcase exhaust port are closed, the original two-stroke piston engine shaft power output working mode and performance are retained, in the gas output mode, the electric control one-way valve opens all the exhaust ports, high-pressure gas is basically discharged during the up-and-down movement of the piston, and the engine becomes a gas generator at this time, which can be used for wing tip jet power or an APU of an aero-engine.

This utility model discloses a brake operating device and a winch drum brake device, relating to the field of winch drum brake technology. It includes a pneumatic combined pressure regulating valve and at least one self-locking cylinder. The pneumatic combined pressure regulating valve has a pressure regulating valve handle, a first working output port communicating with the rod chamber of each locking cylinder, and a second working output port communicating with the rodless chamber of each locking cylinder. The control gas pressure increases as the pressure regulating valve handle is pushed up or pulled down at an increased angle. The self-locking cylinder is fixedly mounted on one side of the brake shaft, and a connecting bracket is rotatably mounted on the piston rod end of the self-locking cylinder. The connecting bracket is fixed to the brake shaft. When the control gas is disconnected, each locking cylinder is in a self-locking state; and in the self-locking state, the current extension length of the piston rod of each locking cylinder remains unchanged. The structure is simple, occupies little space, requires no prolonged holding, and is easy and convenient to operate.

This invention discloses a computer apparatus whose instructions describe a process which greatly improves the analysis of system entropy flows, irreversible losses and Carnot Reversibilities associated with heat exchangers used in all thermal engines. Irreversible losses include those from shell and tube heat exchangers, as a component, and those from the shell-side of heat exchangers such as condensers. The understanding of any thermal engine lies with either understanding its inputs and useful power output, and / or understanding system losses. This disclosure focuses on entropy flows and system losses. It results in revision to the classic Carnot Engine resulting in an Exergetic Engine. Although Exergetic Engine's roots are embedded in Carnot's device, its invention is uniquely created by recognizing true thermodynamic irreversibility associated with any heat exchanger is determined by the summation of its internal exergy flows. This leads to a correction of Sadi Carnot's THot. For the nuclear engine, his TCold is also redefined as a Fixed TRef dependent on neutronic constants and the core's coolant properties. Correcting his 200 year-old teachings produce a highly accurate irreversible loss, and thus a highly accurate Carnot Reversibility which improves the thermodynamic understanding of all thermal engines. With such improved understanding, the system operator has actionable intelligence which can protect the public, and corrects degradations within the power plant which improve operations.

This motor diagnostic device includes: a rate-of-change kinetic energy calculation section for calculating, based on the actual rotational speed of a motor, a value relating to the rate of change of total kinetic energy obtained by summing the kinetic energy of the motor and any device driven by the motor; a total work calculation section configured to calculate a total work value that is the sum of a value relating to the rate of change of total kinetic energy calculated by the rate-of-change kinetic energy calculation section and a value relating to the actual power output of the motor;a theoretical work calculation section configured to calculate a theoretical work value, which is a theoretical value of the engine's work output, based on a fuel flow rate command value; and an engine diagnostic section configured to diagnose an engine abnormality based on the total work output calculated by the total work calculation section and the theoretical work output calculated by the theoretical work calculation section.

The application discloses a kind of permanent magnetization double-fed generator set multivariable control methods for high-temperature adiabatic compressed air energy storage system, it is related to power generation technology coordinated control technical field, to solve the problem of high input-output variable coupling degree and large system internal disturbance in the energy release control process of high-temperature adiabatic compressed air energy storage system, its technical scheme key points are to realize the variable-speed constant-frequency operation of energy release process by using the characteristics of permanent magnetization double-fed generator, to provide a larger turbine speed adjustment feasible region for the sliding pressure operation of energy release process, and to realize the decoupling between the generator internal rotor winding current frequency, turbine valve opening and output power, output frequency by BP neural network inverse model, to improve the flexibility and stability of the system.

The invention provides a wind power plant single-machine equivalent modeling method based on aggregation control. The wind power plant single-machine equivalent modeling method comprises the steps that a fault transient process is divided into five stages of fault detection delay, an uncontrollable process, a balance process, a recovery initial moment and a recovery process; according to the method, power distribution and active control characteristics are analyzed, and an instruction is compensated to eliminate output deviation; calculating a group power recovery time for the recovery process; integrating to obtain an active control instruction during a fault period, and combining reactive power control characteristic analysis to establish correlation between terminal voltage and reactive power output; and constructing a single-machine aggregation model integral structure comprising a wind turbine, a converter, a control system and the like, calculating active and reactive power control instructions of each stage, and finally forming a complete control structure. Based on five-stage fault division, an active / reactive power control mechanism is analyzed in stages, accurate equivalence of dynamic characteristics of the wind power plant is realized through an instruction compensation and controller aggregation principle, and errors caused by power / voltage distribution influence of a traditional model are eliminated.

A heat engine is provided. The heat engine includes a chassis, a work output member, and an operating mechanism for operating the work output member. The chassis supports one or more heat engine components, including the work output member. The work output member is adapted to generate and output mechanical power to an electric power generation system for generating electrical power. The operating mechanism includes a first actuator band array and a second actuator band array connected to displace the work output member in a first direction and a second direction, respectively, in response to heat exposure. A heat switching mechanism is operable to cyclically expose each of the first and second actuator band array to heat to cause cyclic displacement of the work output member in the first and second direction for generating the mechanical power.

An energy conversion device transforms kinetic and thermal energies of gas flows into usable work. It features a duct with an inlet and outlet for the gas flow and a cascade of at least two turbines located in distinct zones of the duct. A post-turbine gas cooling system, associated with the first turbine, includes an injector of evaporating liquid regulated by a controller using real-time data from pressure and temperature gauges. The first turbine's performance is enhanced by pressure and temperature differentials created by the cooling system. The second turbine prevents ambient air intrusion and further converts residual kinetic energy. Both turbines can be coupled either to electric generators or to mechanical devices or both for converting the turbines work output either to electricity or to mechanical work or to both.

The invention relates to the field of engineering machinery control, in particular to an advancing speed control method and device, engineering machinery and a medium. And the actual power of the current control period (the first control period) is compared with the actual power of the previous control period (the second control period) to generate a target control signal and send the target control signal to the advancing device, so that the advancing device controls the whole machine to advance according to the target advancing speed indicated by the target control signal. Therefore, real-time coupling adjustment of the working state of the working motor and the running speed of the whole machine can be realized, so that the sending probability of various working problems of the working device caused by mismatching of the running speed and the working state of the working device is effectively reduced, the reliability of the whole machine is improved, and the overall working output is optimized.

The utility model relates to the technical field of gear box dies, in particular to a gear box die which comprises a shell and a gear box lower die, the top of the shell is fixedly connected with the bottom of the gear box lower die, the inner wall of the shell is connected with a control structure, and a gear box upper die is attached to the top of the gear box lower die. The top of the gearbox upper die is connected with an opening and closing structure. In a control structure, a motor is connected with a power supply, a working output shaft of the motor drives a straight rod to rotate, the rotating straight rod drives a first gear to rotate, the first gear drives a second gear to rotate, the rotating second gear drives a screw rod to rotate, the screw rod drives a vertical cylinder to move upwards, and the moving vertical cylinder is matched with a top plate to drive a gear box upper die to move upwards; the upper die and the lower die are separated, two-way simultaneous lifting is achieved, the upper die is prevented from being stuck when moving, normal use of the gearbox die is guaranteed, and the model forming rate of the gearbox die is guaranteed.

The utility model relates to the technical field of magnetic transmission, and discloses a new energy motor magnetic transmission device which comprises an outer shell, the lower end of the outer shell is fixedly connected with a motor output end, an outer permanent magnet is installed on the inner circumference of the outer shell, and an end face bearing and an end face fixing seat are installed at the inner bottom of the outer shell. An internal mounting seat is arranged in the external shell, an internal permanent magnet is mounted on the inner circumference of the internal mounting seat, and an end face adaptive shaft is fixedly connected to the bottom of the internal mounting seat. According to the utility model, through the arrangement of the mounting sleeve, the working output end and the mounting part, when the working output end is damaged, the working output end can be detached from the connecting shaft, so that the internal mounting seat part is prevented from being integrally replaced, and the use cost is saved; and the end face adaptive shaft, the end face balls and the upper bearing are arranged, so that axial and radial friction force can be reduced, and the transmission efficiency is higher.