105results about "Combination engines" patented technology

An engine system for an aircraft includes a first turbofan engine and a second turbofan engine. The first turbofan engine includes a first low-pressure shaft, a first fan having a first fan shaft, and a counterclockwise gearbox assembly. The first fan shaft is drivingly coupled to the first low-pressure shaft through the counterclockwise gearbox assembly. The first low-pressure shaft rotates in a counterclockwise direction. The first fan shaft rotates in the counterclockwise direction such that the first fan rotates in the counterclockwise direction. The second turbofan engine includes a second low-pressure shaft, a second fan having a second fan shaft, and a clockwise gearbox assembly. The second fan shaft is drivingly coupled to the second low-pressure shaft through the clockwise gearbox assembly. The second low-pressure shaft rotates in the counterclockwise direction. The second fan shaft rotates in a clockwise direction such that the second fan rotates in the clockwise direction.

The invention discloses a double-turbine power generation device suitable for a thermal power generating unit, relates to the technical field of thermal power generation, and mainly aims to improve the power generation efficiency of the thermal power generating unit. According to the main technical scheme, a boiler system is connected with steam inlet valves of a first steam turbine power generation sub-set and a second steam turbine power generation sub-set through pipelines, and corresponding steam is conveyed to the two sub-sets by adjusting the opening degree of a valve to be matched with a load distribution target. After the two subsets do work, part of steam is fed into a steam extraction heat regeneration system to recover heat and is used for heating boiler feed water; and the residual exhaust steam enters the condenser system to be condensed into water, and the condensed water is conveyed to the steam extraction heat regeneration system to be heated to become boiler feed water, so that circulating power generation is realized.

An air turbine and a power generation device, the air turbine comprising a chamber, a valve and a rotor. The chamber comprises a first opening communicating with the atmosphere; the air pressure in the chamber is adjustable, and the difference between the air pressure in the chamber and the atmospheric pressure comprises a first air pressure difference and a second air pressure difference; the valve is connected with the chamber and is configured to open under the action of the first air pressure difference to form a first air flow by the chamber communicating with the atmosphere through the valve and the first opening respectively, and to close under the action of the second air pressure difference to form a second air flow by the chamber communicating with the atmosphere through the first opening, the directions of the first air pressure difference and the second air pressure difference being opposite; the rotor is configured to rotate under the drive of the second air flow. The air turbine can be used for power generation to convert the kinetic energy of the rotor into electrical energy, for example, the first air pressure difference and the second air pressure difference are obtained by utilizing the fluctuation of waves, and ultimately the wave energy is converted into electrical energy.

The invention discloses a compressed air energy storage multi-stage expansion machine quick starting system and method. The compressed air energy storage multi-stage expansion machine quick starting system comprises multi-stage expansion machines which are sequentially connected in series and a main air inlet pipeline connected to the first-stage expansion machine. The main air inlet module is used for supplying and adjusting air flow to the multi-stage expansion machine in a normal operation mode; the last-stage priority starting module is used for converting a high-pressure gas source into low-pressure large-flow mixed gas flow suitable for being driven by the expansion machine in the initial starting stage, and the converted mixed gas flow bypasses the previous expansion machine and directly drives the last-stage expansion machine to rotate and accelerate; the multi-stage preheating module is used for guiding part of gas to carry out reverse-sequence preheating on the previous-stage expansion machines, reverse airflow serves as starting damping and is further used for assisting in stabilizing the rotating speed, the gas completing the preheating task is exhausted through an exhaust valve, speed increasing and reverse-sequence preheating are carried out in parallel, the starting time is greatly shortened, and the starting efficiency is improved. And the starting time of the unit from the cold state to the grid-connected condition is reduced to the minute level.

A rotor-stator assembly for a rotary engine, compressor or pump, includes a rotor arranged to rotate eccentrically in a stator chamber, the geometry of the rotor being configured to provide a first fluid seal at a region of maximum proximity between the outer peripheral surface of the rotor and the inner peripheral wall of the stator chamber. A second fluid seal is provided by means of a component rotating with the rotor, one end of which is permanently connected to the inner surface of the stator chamber by means of bearings and slides along the inner surface of the stator chamber, and the other end of which is accommodated in a radially movable manner in a receptacle of the rotor, the first and second fluid seals delimiting a first chamber portion and a second chamber portion of the stator chamber.

The invention discloses a power generation system and a power generation method integrating a fourth-generation nuclear reactor and fused salt energy storage, and the power generation system integrating the fourth-generation nuclear reactor and the fused salt energy storage comprises a fused salt energy storage system which comprises a circulating heat storage working medium which is fluoride fused salt; the nuclear energy side power generation system comprises a fourth-generation nuclear reactor, a first power generation device and a second power generation device, supercritical carbon dioxide serves as a heat absorption medium of the fourth-generation nuclear reactor and flows out of a main flow path and a branch flow path, the main flow path supplies the supercritical carbon dioxide into the first power generation device, and the branch flow path supplies the supercritical carbon dioxide into the second power generation device. And supercritical carbon dioxide is introduced into the fused salt energy storage system for heat exchange through the branch flow path. Therefore, the temperature upper limit of a traditional circulating medium can be broken through, the energy conversion efficiency is improved, and meanwhile under the condition that the nuclear energy side power generation system stops running, high-temperature heat stored by the fused salt energy storage system can still maintain running.

This invention provides a segmented cross-bridge steam seal, method, and steam turbine for reducing steam leakage, applicable to steam turbines. The steam turbine includes an intermediate-high pressure outer cylinder, an integral high pressure inner cylinder, an intermediate pressure inner cylinder, a segmented cross-bridge steam seal, and an intermediate-high pressure rotor. The integral high pressure inner cylinder and intermediate pressure inner cylinder are both located within the intermediate-high pressure outer cylinder, and the segmented cross-bridge steam seal is located between the integral high pressure inner cylinder and the intermediate pressure inner cylinder. The segmented cross-bridge steam seal has several cross-bridge steam seal outlet rectifier chambers, and the integral high pressure inner cylinder includes several high pressure cylinder extraction chambers. The several cross-bridge steam seal outlet rectifier chambers are respectively connected to the several high pressure cylinder extraction chambers. In this invention, the main steam leaking from the segmented cross-bridge steam seal enters the integral high pressure inner cylinder through the make-up steam chamber, realizing the reuse of the main steam leaking from the segmented cross-bridge steam seal. This solves the problems of large steam leakage from the cross-bridge steam seal, waste of heat energy in high-quality steam, and high overall heat consumption rate of the turbine.

Propulsion system (1) for an aircraft, comprising - at least one gas turbine (2), - at least one fluid system (4) for providing a heated fluid (6), - comprising an external auxiliary power unit (40) - wherein the at least one gas turbine (2) and the at least one fluid system (4) are coupled and arranged in such a fluid-conducting manner that at least one section (30, 34, 36) of the gas turbine (2) is supplied with the heated fluid (6), - wherein the fluid system (4) comprises a combustion unit (12) designed separately from the auxiliary engine (40), which is configured to produce the heated fluid (6) by burning fuel, - characterized in that a fluid supplied to the combustion unit (12) is bleed air from the auxiliary engine (40).

This invention belongs to the field of energy storage and power generation technology, and particularly relates to an integrated compressed air energy storage system and method that combines gas and thermal storage. The system includes a compression subsystem, an expansion subsystem, and a double-layered air storage tank. The double-layered air storage tank comprises an inner tank and an outer tank nested together, with a sealed interlayer between them. The sealed interlayer is filled with a thermal storage medium. The air inlet of the compression subsystem and the air outlet of the expansion subsystem are both connected to the external atmospheric environment. The air outlet pipeline of the compression subsystem and the air inlet pipeline of the expansion subsystem pass through the outer tank and connect to the inner tank. The outer tank wall is covered with insulation material. This invention has a small footprint, reduces energy loss during compressed air energy storage, and significantly improves the conversion efficiency between electrical energy and the internal energy of compressed air.

A car having: at least one electric motor connected to the two drive wheels; a first generation assembly having a first electric generator and a first internal combustion engine, which is mechanically connected only to the electric generator and, therefore, is mechanically independent of the drive wheels; a second generation assembly having a second electric generator, which is mechanically independent of the first electric generator, and a second internal combustion engine, which is mechanically connected only to the electric generator and, therefore, is mechanically independent of the drive wheels; and one single common outlet pipe, which ends with an emission opening, through which exhaust gases are released into an external environment and which receives exhaust gases from both exhaust ducts of the two internal combustion engines.

The application discloses a supercritical carbon dioxide cycle power generation system and a working method and a solar thermal power generation system, and relates to the technical field of power generation. The supercritical carbon dioxide cycle power generation system comprises a compressor, a cooler, a first regenerator, a heat exchanger, a first turbine, a second regenerator, a second turbine and a third turbine; the compressor is connected with the low-temperature side inlet of the first regenerator; the low-temperature side outlet of the first regenerator is connected with the low-temperature side inlet of the heat exchanger; a part of carbon dioxide working medium flowing out of the low-temperature side outlet of the heat exchanger flows through the first turbine, the low-temperature side of the second regenerator and the third turbine; another part of the carbon dioxide working medium flows through the high-temperature side of the second regenerator and the second turbine; the carbon dioxide working medium flowing through the third turbine and the carbon dioxide working medium flowing through the second turbine are combined and then enter the high-temperature side of the first regenerator; the high-temperature side of the first regenerator is connected with the high-temperature side of the cooler; and the high-temperature side of the cooler is connected with the compressor. The application improves the supercritical carbon dioxide cycle power generation efficiency, does not increase the heat storage cost and improves the heat storage temperature difference.

The invention belongs to the technical field of energy storage and power generation, and particularly relates to an air storage and heat storage integrated compressed air energy storage system and method. The system comprises a compression subsystem, an expansion subsystem and a double-layer gas storage tank, the double-layer gas storage tank comprises an inner tank and an outer tank which are nested inside and outside, and a sealing interlayer is formed between the inner tank and the outer tank; the sealing interlayer is filled with a heat storage medium; an air inlet of the compression subsystem and an air outlet of the expansion subsystem are both communicated with the external atmospheric environment; an air outlet pipeline of the compression subsystem and an air inlet pipeline of the expansion subsystem penetrate through the outer tank and are communicated with the inner tank; and the tank wall of the outer tank is coated with a thermal insulation material. The compressed air energy storage device is small in occupied area, energy loss in the compressed air energy storage process is reduced, and the conversion efficiency between electric energy and compressed air internal energy is greatly improved.

The invention relates to the field of machinery, in particular to pneumatic technology. The pipeline type power generation system with the built-in generator is characterized by comprising a circulation channel, the circulating channel is provided with an air inlet and an air outlet; a valve is arranged between the air inlet and the air outlet; after the valve is closed, air flow of the air inlet is prevented from flowing to the air outlet, and the valve is used for controlling air circulation. The movable device is arranged in the circulating channel and circularly moves along the circulating channel; the movable device is provided with a structure for blocking air flow from circulating in the circulating channel; and an energy output mechanism for outputting the energy of the movable device out of the circulating channel is arranged in the shape of the opening of the valve in the conducting state in a manner of allowing the movable device to pass through.

The utility model discloses a double-unit regenerative turboset, and relates to the technical field of turbines. The problems that the irreversible loss is increased and the manufacturing cost is increased when a regenerative system extracts steam along with the increase of steam parameters in the prior art are solved. The system comprises a main steam turbine and a small steam turbine, the main steam turbine comprises an ultrahigh-pressure cylinder, a steam inlet of the small steam turbine is connected with a high-pressure steam guide pipe, an inlet of the high-pressure steam guide pipe is connected with a main steam adjusting valve, a steam inlet of the main steam adjusting valve is communicated with a steam outlet of the ultrahigh-pressure cylinder, and a steam outlet of the main steam adjusting valve is communicated with a steam outlet of the ultrahigh-pressure cylinder. The small steam turbine is used for driving the feed pump to operate, steam firstly enters the ultrahigh-pressure cylinder to do work, part of steam discharged from the ultrahigh-pressure cylinder is used for driving the small steam turbine and driving the feed pump to supply water to the boiler, and meanwhile extracted steam and exhausted steam of the small steam turbine serve as regenerative extracted steam and return to a regenerative system of the main steam turbine to heat condensed water and feed water. The steam temperature after acting of the small steam turbine is lower, loss can be reduced, and the overall heat efficiency of the unit is improved.

A machine system having a positive displacement, centric rotary reciprocating type of machine, the system comprising: a non-rotatable process housing (101) which surrounds a pair of first and second mutually movable, co-axial rotary parts (102; 103) movable in a continuous, uninterrupted mode along a curved surface (104) and two planar end wall (105; 106) of the housing; and fluid inlet(s) (105') and fluid outlet(s) (106') on the housing. Each rotary part (102; 103) is coupled to a power device (108; 109) controlled from a power device operation unit (110; 111). Each power device (108; 109) receives assigned timing and angular position controlled electrical power signals from its power device operation unit (110; 111), the signals related to cyclically instantaneous mutually different angular positions (θoutRotorA; θoutRotorB) of the rotary parts. The power device operation units (110; 111) are controlled from a common electronic control unit (112) connected to a Human-Machine- Interface (113).

The present application relates to an internal combustion engine operating on the rotary principle, wherein at least one piston rotates on a circular piston path within an annular cylinder chamber bounded by a cylinder wall, passing through various zones of the cylinder chamber. On one full revolution of the internal combustion engine, corresponding to a complete rotation of the piston on its piston path (360°), an air-fuel mixture is ignited behind the piston in a combustion zone of the cylinder chamber. Later, during the same revolution, air located in front of the piston is compressed by the piston in a compression zone of the cylinder chamber. The compressed air is drawn into the piston and transported by the piston along its path into the combustion zone. There, the compressed air is discharged from the piston into the combustion zone and used to form the air-fuel mixture.

The present application relates to the technical field of energy storage, and particularly relates to a compressed air energy storage operation system and an energy storage method, the compressed air energy storage operation system comprising a preheater, an air inlet of the preheater being in communication with the atmosphere; a compressor set, a first control valve being arranged between the compressor set and the preheater; a gas storage device, the gas storage device being in communication with the compressor set and being used for storing compressed air; a heat exchange assembly, comprising a heat exchanger group, a heat storage medium cold tank and a heat storage medium hot tank which are arranged in series, a second control valve being arranged on a pipeline through which the heat storage medium cold tank is in communication with a heat storage medium inlet of the preheater; and a generator set, the generator set being in communication with the gas storage device. The present application can maintain stable operation of the compressed air energy storage operation system and improve energy storage efficiency.

The invention belongs to the technical field of oil and gas development, and provides a wellhead expansion machine type selection method and system, a storage medium and electronic equipment.The method comprises the steps that on the basis of parameters of a gas well wellhead, the volume flow of gas produced by the wellhead is calculated, and the total available isentropic specific enthalpy drop under the two conditions of wellhead pressure and gas collection pressure is obtained; determining the well mouth parallel connection number and the expansion machine configuration mode; the isentropic specific enthalpy drop of the expansion machine is calculated based on the configuration mode of the expansion machine, the impeller diameter of the expansion machine and the rated volume flow; based on the isentropic specific enthalpy drop of the expansion machine and the total available isentropic specific enthalpy drop under the two conditions of wellhead pressure and gas collection pressure, the number of stages of the expansion machine is calculated; based on the rated rotating speed and the isentropic specific enthalpy drop of the expansion machine, the rotating speed and the isentropic specific enthalpy drop of the expansion machine are calculated and adjusted, and the final rotating speed and the final isentropic specific enthalpy drop of the expansion machine are obtained; and calculating the power of the expansion machine. The pressure energy recycling rate is increased, electric heating and use of an anti-freezing agent are reduced, and the cost is saved.

A rotor-stator assembly for a rotary engine, compressor or pump, comprises a rotor (3, 4) arranged to rotate eccentrically in a stator chamber (1, 2), the geometry of the rotor (3, 4) being configured to provide a first fluid seal at a region of maximum proximity between the outer peripheral surface of the rotor (3, 4) and the inner peripheral wall of the stator chamber (1, 2), whereby a second fluid seal is provided by means of a component (15) rotating with the rotor, one end of which is permanently connected to the inner surface of the stator chamber (1, 2) by means of bearings and slides along the inner surface of the stator chamber (1, 2), and the other end of which is accommodated in a radially movable manner in a receptacle of the rotor (3, 4), the first and second fluid seals delimiting a first chamber portion and a second chamber portion of the stator chamber (1, 2).

The utility model relates to a compressed air energy storage system in the technical field of compressed air energy storage. The compressed air energy storage system comprises a compression unit, an energy storage unit, an expansion unit and an energy supplementing unit, the compression unit is a cascade type compression mechanism, the expansion unit is a cascade type expansion mechanism, the number of the compressors is the same as that of the expansion machines, and the energy storage unit receives compressed air output by the last-stage compressor and outputs the compressed air into the primary expansion machine; the energy complementing unit comprises energy complementing assemblies formed by connecting an air storage tank and a third heat exchanger in series, each stage of compressor located before the last stage communicates with each stage of expansion machine located after the first stage through one set of energy complementing assemblies, and part of compressed air output by the compressors is input into the air storage tank through branch pipelines. The compressed air in the air storage tank is mixed with the compressed air output by the self-expansion machine after being subjected to heat exchange through the third heat exchanger, and the temperature of the compressed air output by the third heat exchanger is higher than that of the compressed air output by the self-expansion machine. According to the utility model, the electricity-electricity conversion efficiency of the system can be effectively improved.

Vane turbine machine with a vane machine (A1,C,E) and a turbine machine (C,R,S) mounted on the same rotor (C) for rotation therewith in the casing (F) and arranged in sequence, such that a flow of working fluid expands in the vane machine (A1,C,E) and subsequently further expands in the turbine stage (C,R,S) to produce mechanical power.

A car (1) having: at least one electric motor (6) connected to the two drive wheels (4); a first generation assembly (7) having a first electric generator (9) and a first internal combustion engine (8), which is mechanically connected only to the electric generator (9) and, therefore, is mechanically independent of the drive wheels (4); a second generation assembly (7) having a second electric generator (9), which is mechanically independent of the first electric generator (9), and a second internal combustion engine (8), which is mechanically connected only to the electric generator (9) and, therefore, is mechanically independent of the drive wheels (4); and two interconnection ducts (29), which establish a hydraulic communication between a first lubrication circuit (28) of the first internal combustion engine (8) and a second lubrication circuit (28) of the second internal combustion engine (8), so that part of the lubricating oil flowing in the first lubrication circuit (28) can flow to the second lubrication circuit (28) and vice versa.

A self-propelled ground processing machine has a machine frame, which accommodates a work device for ground processing, at least one functional device different from the work device on the machine frame, a drive assembly, which provides work drive power for the work device and functional drive power for the at least one functional device, a work transmission mechanism between the drive assembly and the work device, and a functional transmission mechanism between the drive assembly and the at least one functional device. The drive assembly includes first and second engines, each of which is connected to the work device via the work transmission mechanism such that the work device can be driven to perform a prescribed ground processing only by the first engine or only by the second engine. The work transmission mechanism connects the first engine to the work device at a first transmission ratio and the second engine to the work device at a second transmission ratio different from the first transmission ratio.

A gas turbine intake (16) has a swirl housing (42) having a tangential inlet (58) fluidly connecting an exhaust conduit, an annular outlet (52) defined around a central axis (36) and fluidly connecting a turbine gas path (34), a swirl path (44) extending circumferentially around the central axis (36) from the tangential inlet (58), and a plurality of vanes (56) located in the swirl housing (42), the vanes (56) circumferentially interspaced from one another relative the central axis (36), each vane (56) having a twisted and flat body having a length extending from a leading end (60) to a trailing end (62), the leading end (60) being oriented mainly circumferentially and axially at the swirl path (44), the trailing end (62) being oriented mainly axially and radially at the annular outlet (52), the twisted and flat body twisting between the leading end (60) and the trailing end (62) around the central axis (36), around a radial axis (70) perpendicular to the central axis (36), and around a tangential axis (68) perpendicular to both the central axis (36) and the radial axis (70).

A self-propelled earth working machine includes a machine frame, a working apparatus, at least one function apparatus, a drive system including first and second motors, a function transmission and a working transmission. The working transmission is configured to transmit torque between the drive system and the working apparatus. The working transmission connects the first motor and the second motor to the working apparatus for the transmission of torque such that the working apparatus may be driven to perform the earth working movement solely by the first motor or solely by the second motor or jointly by the first and second motors, wherein the working transmission connects the first motor to the working apparatus at a first transmission ratio and connects the second motor to the working apparatus at a second transmission ratio different from the first transmission ratio.

According to the wide-load efficient turboset provided with the double-flow middle balance piston type intermediate-pressure cylinder and the operation method of the wide-load efficient turboset, on the basis that the arrangement mode of the turboset and a steam extraction system of the turboset is not changed, the unique double-flow middle balance piston type intermediate-pressure cylinder is designed, and a steam extraction heat regeneration system is adaptively designed; two operation modes of a conventional mode and pressure-building cylinder switching are provided, the temperature field change of a high-temperature metal part of the turboset before and after mode switching is small, safety and reliability are high, the metal service life of the set is not affected, and meanwhile the problem of blade flutter caused by insufficient steam exhaust flow of a low-load cylinder of the set under the low-load working condition is solved. Compared with a conventional mode that two steam inlet valves of the medium-pressure cylinder are combined for pressure building heat supply, the throttling loss of the medium-pressure cylinder and the steam exhaust loss of the low-pressure cylinder can be reduced, the efficiency of the medium-pressure cylinder and the low-pressure cylinder is greatly improved, and the wide-load and high-efficiency unit is achieved.

The present invention proposes an air compression system with coupled heat for coupled energy storage, a power supply system, and an air compression method for energy storage, and relates to the field of energy storage technology. The air compression system with coupled heat for coupled energy storage comprises a compressor system, a coupled gas storage device, and an air expansion system, wherein a common heat exchange device is arranged between the compressor system and the air expansion system. During energy storage, the common heat exchange device recovers heat from the compression and cools the air, while during energy release, the common heat exchange device recovers the cooling effect of the expansion and heats the air. The coupled gas storage device comprises a first gas storage device and / or a second gas storage device.The first gas storage device comprises a tower casing of the wind turbine. The second gas storage device is designed to be underground, underwater, or suspended in water. The invention can solve the following problems of existing compressed air energy storage technology: that onshore gas storage devices are limited by geographical conditions, that offshore gas storage devices occupy coastal space, and that the costs for constructing gas storage devices and heat exchangers are high. It offers the following benefits: a flexible arrangement of gas storage devices for multiple application scenarios, the shared use of common heat exchange devices, cost reduction, and so on.

The invention discloses an intelligent regulation and control method and system for natural gas differential pressure power generation, and belongs to the technical field of artificial intelligence automation, and specifically, the regulation and control method comprises the steps that a main control system determines a preliminary distribution scheme according to a gain instruction and preset static parameters of all power generation branches; each secondary controller generates a state vector representing a self operation state according to the preliminary distribution scheme and operation data obtained from the interior of the power generation branch, and reports the state vector to the main control system; and the main control system corrects the preliminary distribution scheme based on all the received state vectors to generate a final distribution scheme, and controls the plurality of power generation branches according to the final distribution scheme.

The present application relates to a kind of steam accumulator-based thermal power unit peak shaving system and peak shaving method, including steam turbine, the boiler of steam to steam turbine delivery, and the feedwater assembly of water to boiler to form steam;The boiler includes main steam pipe and reheat steam pipe;The feedwater assembly includes water supply component and heating component, and the heating component is used to heat the water of water supply component inside delivery using the steam extraction of the steam turbine;The thermal power unit peak shaving system further includes steam storage system, and the steam storage system includes steam accumulator, and the steam input end of the steam accumulator is connected with the main steam pipe, and the steam output end of the steam accumulator is connected with at least the heating component, and specifically meet the advantage of unit rapid peak shaving.