489 results about "Turbo generator" patented technology

A power generation system and method providing an engine configured to produce hydrogen rich reformate to feed a solid oxide fuel cell includes an engine having an intake and an exhaust; an air supply in fluid communication with the engine intake; a fuel supply in fluid communication with the engine intake; at least one solid oxide fuel cell having an air intake in fluid communication with an air supply, a fuel intake in fluid communication with the engine exhaust, a solid oxide fuel cell effluent and an air effluent. Engines include a free piston gas generator with rich homogenous charge compression, a rich internal combustion engine cylinder system with an oxygen generator, and a rich inlet turbo-generator system with exhaust heat recovery. Oxygen enrichment devices to enhance production of hydrogen rich engine exhaust include pressure swing absorption with oxygen selective materials, and oxygen separators such as an solid oxide fuel cell oxygen separator and a ceramic membrane oxygen separator.

Prior battery-powered electric locomotives have used multiple diesel engines to charge the batteries and have not been commercially accepted. The present invention provides a yard switcher which combines battery storage with a gas microturbine generator to provide an effective fuel-efficient and environmentally friendly locomotive. locomotive.

An integrated expansion turbine/electrical generator assembly (collectively referred to as a “turbo-generator”) suitable for use in waste heat recovery and similar applications. The turbo-generator uses a common shaft mounting a one or more stage expansion turbine and a homopolar electrical generator. Magnetic levitating axial and thrust bearings are used to hold the common shaft in its proper position with a fixed housing. The magnetic bearings minimize frictional losses, allowing the common shaft to spin at a very high rotational velocity. Sensor rings continually monitor the common shaft's position. This information is used by control electronics to regulate the magnetic bearings in order to hold the rotating shaft's position. Electrical energy is extracted from the rotating shaft in the form of a direct current. Preferably integrated power-switching electronics are used to generate single or three-phase AC power, which can be phase-matched to an existing power grid or other application.

A hydroelectric power generating method and/or apparatus provides one or more inlet pipes perpendicular to a flow of water in a stream or river. The inlet pipes have a length and plural apertures along the length of the at least one inlet pipe. A feedline and a turbine generator combination are interconnected with the inlet pipes. One or more outlet pipes are interconnected with the feedline and the turbine generator combination. The outlet pipes have an elevation lower than the inlet pipe. A flow of water passes through the inlet pipes, the feedline, the turbine generator combination, and the outlet pipes, and generates electricity from the flow of water passing through the turbine generator combination. The hydroelectric power generating method also provides a pressure dissipation device that causes a reduction in the pressure of the water so that the water can be released safely back into the stream or river.

A piston compression system converts energy from a conventional combustion cycle engine driving a piston to displace a working gas for flow through a turbine for output power. The working gas is derived by diverting a portion of the charge during combustion at near peak combustion pressure (PCP) into a closed working volume. The working gas is maintained at high pressure within the working volume. The working volume has a first displacement compartment and a second displacement compartment, a supply manifold connected for receiving pressurized working gas alternately from the first and second compartments and connected to an inlet of the turbine, and a return manifold connected to an outlet of the turbine and alternately returning working gas to the second and first compartments. The engine is configured with first and second pistons housed in first and second combustion cylinders respectively powering a first displacing surface for displacement of working gas in the first compartment and a second displacing surface for displacement of working gas in the second compartment.

The invention discloses an ultra-supercritical air energy storage/release system, which is a novel large-scale energy storage system and relates to an energy storage technology, namely, air is compressed into an ultra-supercritical state by using off-peak electricity of a power station, heat is compression is stored simultaneously, air is cooled by using an expansion engine and simultaneously expansion work is recovered to improve the efficiency, and the ultra-supercritical air is cooled, liquefied and stored by using stored cold energy; and liquid air is pressurized and absorbs heat to reach an ultra-supercritical state at the power utilization peak and further absorb heat of compression for power generation by a turbo-generator. The ultra-supercritical air energy storage/release system disclosed by the invention has the advantages of high energy density, high efficiency, no limitation by energy storage cycle and geological conditions, suitability for various power stations, environmental friendliness, capability of recovering intermediate-temperature and low-temperature waste heat and the like.

The present invention discloses precise investing process of super long low pressure partition guide blade of stainless steel for turbine. Crankled stainless steel guide blade with length up to 960 mm and weight up to 42 kg may be manufactured through investing process. The present invention adopts pre-deforming profiling design and improved investing process and the produced guide blade for 600 KW steam turbo generator has high performance. The investing process includes making wax mold, making shell, smelting and casting, and heat treatment.

A method for generating power, comprising the steps of: a) providing a Rankine Cycle device that includes a plurality of turbo-generators, each including a turbine coupled with an electrical generator, and at least one of each of an evaporator, a condenser, and a refrigerant feed pump; b) disposing the one or more evaporators within an exhaust duct of a power plant of a marine vessel; c) operating the power plant; and d) selectively pumping refrigerant through the Rankine Cycle device.

A wave energy converter with air compression (WECWAC) includes a cylinder and a piston located within the cylinder dividing the cylinder into an upper chamber and a lower chamber. The cylinder is fixedly attached to a spar whose up/down (heave) motion is restrained. The piston is fixedly attached to, and driven by, a float which moves generally in phase with the waves. Under typical wave conditions the piston functions to compress air within the upper chamber on its up stroke and within the lower chamber on its down stroke, i. e., the system is thus double-acting. In still water, the spar and cylinder combination is designed to drift down into the body of water relative to the piston whereby the size/volume of the upper chamber is decreased (while that of the lower chamber is increased). For small amplitude waves the piston continues to compress air in the upper chamber and this asymmetrical compression continues until the waves reach a predetermine level when “double-action” is resumed. Controlling the position of the cylinder relative to the piston enables the WECWAC to automatically regulate its compression ‘stroke’ to suit varying wave conditions. The pressurized air from a WECWAC may be stored and/or processed to drive a turbo-generator or it may be combined with the outputs of other WECWACs to drive a single large and highly efficient turbo-generator.

A device which utilizes the solar energy to carry out chimney generating and seawater desalting relates to the technical field of utilizing the solar energy to carry out generating and seawater desalting. The invention includes a solar chimney, a transparent heat collecting shed, a solar distilling pool and a turbine generator set. The transparent heat collecting shed is covered on a supporting group; the turbine generator set is arranged in the solar chimney arranged at the connection location of the solar chimney and the transparent heat collecting shed; the solar distilling pool and a rock heat accumulating layer are arranged at the lower side of the transparent heat collecting shed; a transparent cover plate is obliquely arranged at the upper end of the solar distilling pool; the lower end of the solar distilling pool is respectively connected with a seawater input pipe, a brine output pipe and a fresh water output pipe. The device of the invention improves the comprehensive operating factor of the solar energy, improves the comprehensive operating factor of land resource and simultaneously reduces the cost of each product such as power, heat accumulating amount, fresh water in another way.

The invention is applied in the field of nuclear power control, and provides a method for controlling the starting and stopping of a turbo generator set of a nuclear power plant, a device for controlling the starting and stopping of the turbo generator set of the nuclear power plant, and a digital control system (DCS). The method comprises the following steps of: detecting the running state and running parameters of the turbo generator set, the running state and running parameters of an auxiliary system of the turbo generator set, and fault information in the running of the turbo generator set; displaying the detected information on the same function tracking interface in a centralized way; and directly controlling the starting and stopping of the turbo generator set according to the information displayed on the function tracking interface. The method provided by the embodiment of the invention can make an operator directly and rapidly discover the anomaly of the turbo generator set, rapidly and accurately obtain key parameters and judge reasons, so that the operator can directly, rapidly and accurately control and intervene the starting and stopping of the turbo generator set of the nuclear power plant to ensure the security of the turbo generator set of the nuclear power plant.

The invention provides an adjustable feed water heat regenerative system for a turbo generator unit, which comprises a high pressure cylinder of a steam turbine, a final-stage extraction opening, a final-stage feed water heater, a steam extraction pipe and a regulating valve, wherein the final-stage extraction opening is additionally arranged on the high pressure cylinder; the steam extraction pressure of the final-stage extraction opening is much higher than the common highest extraction pressure; additionally extracted steam is used as a heat source of the final-stage feed water heater; the steam extraction pipe is connected with the final-stage extraction opening and the final-stage feed water heater; and the regulating valve is arranged on the steam extraction pipe. Part of steam which does work is guided to the feed water heater through the final-stage steam extraction pipe so as to further heat feed water of a boiler. The heat regenerative system provided by the invention is an elastic heat regenerative system. The temperature of the feed water can be maintained or changed under the variable load condition of the unit, so that the environmental friendliness, the economy and the safety of the unit are improved and the frequency modulation characteristic is perfected.

The invention relates to a model used for carrying out primary frequency modulation analysis coordination control on a boiler, a steam turbine and a power grid and particularly relates to a boiler, steam turbine and power grid three-party coordination control supercritical and super-supercritical set coordination control model used for carrying out primary frequency modulation analysis. Control focus of machine-network coordination and machine-furnace coordination in the prior art is a turbo generator set and a power grid, only negative feedback control strategies of grid frequency difference are reflected in a primary frequency modulation control loop, influence on the boiler is not considered, so a hidden safety trouble exists. The method for problem solution is characterized by comprising steps that 1, a DC boiler mechanism model in a supercritical and super supercritical set is established; 2, a supercritical and super supercritical DC boiler controller model is established; 3, a steam turbine primary frequency modulation model is established; 4, an electric power system frequency modulation model including different types of sets is established; and 5, a steam turbine power given signal is corrected. The model is advantaged in that the model is applicable to the boiler, steam turbine and power grid coordination control field.

The invention discloses a subsynchronous damping control system, and belongs to the power system stabilization and control technology field. The system includes a rotate speed testing and preposing processor, a combined mode filter, a combined proportion phase shifter, a mode control signal synthesizer and a nonlinear transformer. The system solves the problem of multimode subsynchronous resonance and oscillation of a power system, improves the subsynchronous stability of the power system, and reduces the shafting torsional oscillation fatigue loss of a large-size steam turbo generator.

The invention relates to an online detecting method and device for air leakage quantity of a vacuum system of a turbo generator unit. The device and method can be used for measuring the amount of the air leaked from a condenser which is vacuumized by using a water-ring vacuum pump, on line. The method comprises the following specific steps of: additionally arranging a temperature sensor, a pressure sensor, a gas flow rate sensor and an absolute humidity sensor behind the water-ring vacuum pump, determining the mass flow of the water vapor in a pump-out pipeline in certain particular working condition through parameters measured by the sensors, and calculating to obtain the mass flow of the pumped-out air by using a thermodynamic formula, wherein the mass flow of the pumped-out air is the sum of air leak-in rates of all negative pressure parts of the whole vacuum system. The invention has the advantages of clear and accurate measuring principle, simple measuring mechanism, convenience for installation and capabilities of measuring air leakage amount of the condenser on line and providing a reliable parameter basis for the vacuum system of the turbo generator unit to maintain a higher vacuum level and a guarantee for the safe and economic production of a power plant.

The invention discloses a real-time random vibration fault diagnosis method for a turbo generator set, relates to the automatic on-line vibration state monitoring of the turbo generator set, and belongs to the fields of vibration state monitoring and fault diagnosis of large rotating machinery. The method comprises the following steps: acquiring bearing pedestal bush vibration signals and shaft vibration signals of a shaft system of the turbo generator set; performing necessary data preprocessing on the vibration data such as calibration conversion, abnormal point elimination and the like; adopting the Fast Fourier Transform (FFT) spectrum analysis method to perform relevance analysis between the bush vibration low frequency vibration and the shaft vibration on the vibration data, and further performing real-time quantitative computation and analysis on the bearing pedestal bush vibration data such as condition verification of low frequency vibration amplitude, the condition verification of the main frequency for the low frequency vibration, the dispersibility verification of low frequency vibration frequency components and the like, and automatically diagnosing in real time whether the random vibration fault occurs in the set by combining various verification results based on the real-time quantitative computation and analysis.

The invention discloses a real-time diagnosis method of a rotor original quality imbalance fault of a turbo generator set at a working rotation speed, which belongs to the field of fault diagnosis and comprises the following steps of: carrying out necessary computation, analysis and judgment on vibration data through collecting a vibration signal of a turboset rotor shaft, computing and storing an amplitude and a phase value of shaft relative vibration power frequency vibration at both sides of a rotor in real time, verifying the amplitude of the shaft vibration power frequency vibration in real time and judging whether the amplitude of the shaft vibration power frequency vibration at any side of the rotor is larger than a threshold value of the vibration amplitude; carrying out real-time quantitative computation and analysis including the amplitude trend stability verification of the shaft vibration power frequency vibration at the working rotation speed, the phase trend stability verification of the shaft vibration power frequency vibration at the working rotation speed and the like on shaft vibration power frequency vibration data by combining a least square method; and automatically real-time on-line diagnosing whether the rotor original quality imbalance fault at the working rotation speed of the turbo generator set occurs by combining each verification result. The real-time diagnosis method has the advantages of scientific method, reliable conclusion and the automatic real-time on-line monitoring and diagnosis of faults, and the like.