168results 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.

The invention relates to a multi-source cooperative steam turbine with all-working-condition efficiency reconstruction and a control method. The multi-source cooperative steam turbine comprises a multi-source cooperative steam turbine high-pressure cylinder, a multi-source cooperative steam turbine intermediate-pressure cylinder, a multi-source cooperative steam turbine intermediate-low pressure combined cylinder and a multi-source cooperative steam turbine low-pressure combined cylinder which are coaxially arranged. The gradient adaptive turbine is arranged on another shaft or coaxially arranged through a clutch, and a steam inlet of a gradient adaptive turbine cylinder is connected with a main steam output pipeline of the boiler and is provided with a gradient adaptive turbine main steam regulating valve; a steam exhaust port of the gradient adaptive turbine cylinder is divided into two paths, one path is connected to the downstream of the high-pressure regulating valve so as to lead to a steam inlet of a high-pressure cylinder of the multi-source cooperative steam turbine, the other path leads to a condenser and is provided with a gradient adaptive turbine ventilation valve, and a gradient adaptive turbine rotor is connected with a turbine generator. The steam turbine can effectively improve the circulating heat efficiency of the steam turbine under variable working conditions, and obviously improves the economy of partial load operation of a coal power unit under a novel electric power system.

The invention discloses a multi-energy complementary system based on compressed air energy storage and biomass energy, so that the advantages of the compressed air energy storage and the biomass energy are fully utilized, natural energy is utilized to the maximum extent by the system, and meanwhile, the problem that the energy utilization efficiency of a single system is low is solved. According to the technical scheme, the system comprises a compressed air energy storage unit used for conducting compressed air energy storage on input electric energy and releasing energy in compressed air through an expansion machine so as to conduct power generation and heat recovery; the biomass energy unit is used for utilizing synthesis gas generated by biomass gasification as fuel and providing electric power output and waste heat recovery through combustion; and the heat supply circulating unit is used for recovering waste heat generated by the compressed air energy storage unit and the biomass energy unit and conveying heat to an external heat user side.

The invention discloses a front-mounted steam turbine suitable for high exhaust steam pressure and a steam turbine system.The inner cylinder of the front-mounted steam turbine comprises a first inner cylinder body and a second inner cylinder body which are formed by a first interface passing through the axis, and the outer cylinder of the front-mounted steam turbine comprises a first outer cylinder body and a second outer cylinder body which are formed by a second interface perpendicular to the axis; the two sides of the cylinder walls of the first inner cylinder body and the second inner cylinder body are respectively sleeved and fixed through circular rings; annular skirt parts are respectively arranged on the inner wall surfaces of the first outer cylinder body and the second outer cylinder body and are respectively matched with the peripheral surface of the circular ring; the two annular skirt parts, the outer wall face of the inner cylinder and the inner wall face of the outer cylinder form a low-pressure cavity, and a pressure balance hole penetrating to the low-pressure cavity is formed in the cylinder wall of the outer cylinder and used for being communicated with a low-pressure area. On the basis of overall structure optimization, the bearing capacity of the outer cylinder can be effectively improved, a pressure isolation mechanism is established on the basis of the low-pressure cavity, the action range of high exhaust steam pressure is greatly reduced, and reliable technical guarantee is provided for improving the exhaust steam pressure of a unit.

The gas heat engine comprises an isobaric compressor (1), which is connected to the shaft of an isothermal compressor (2), and both compressors (1) and (2) are housed in a container (10). The shaft of the isothermal compressor (2) is connected on the other side through a thermal insulation coupling (8) to the shaft of a rotary isothermal engine (4) and a rotary isobaric engine (3), where both engines are housed in a container (10). The output from the isobaric compressor (1) in the container (10) is connected through a recuperator (7) and a regulator valve (6) to the isobaric engine (3) in a container (9), the output from which is connected to the input to the isothermal engine (4) in the container (9), and its output is connected via piping to the recuperator (7), with an input to the isothermal compressor (2) in the container (10), where its output is connected through a check valve (5) to the isobaric compressor (1) in the container (10).

The application discloses a kind of efficient supercritical carbon dioxide high temperature gas cooled reactor systems and its operating method, the system includes pre-cooler, main compressor, re-compressor, high temperature turbine, low temperature regenerator, high temperature regenerator, high temperature helium-supercritical carbon dioxide heat exchanger, low temperature helium-supercritical carbon dioxide heat exchanger and reactor.The application proposes the power generation system of two-stage split supercritical carbon dioxide cycle comprising high-temperature split re-compression cycle loop and low-temperature re-split reheat expansion cycle loop, by arranging high-temperature helium-supercritical carbon dioxide heat exchanger and low-temperature helium-supercritical carbon dioxide heat exchanger in power generation system, ensure the good matching of helium loop heat release temperature window and supercritical carbon dioxide power cycle loop heat absorption temperature window, realize the efficient cascade utilization of high-temperature gas cooled reactor helium loop large-span temperature interval heat.

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.

An energy recovery system 10 for a fluid (for example hydrogen, natural gas, nitrogen, air) network 12 comprises a multi-stage expander 16 having a plurality of expander stages 26a-c. The multi-stage expander has a controllable valve 60 between each adjacent expander stage which includes a valve member 72, a valve seat 70, and a valve actuator for producing a relative movement between the valve member and valve seat to open and close the valve. Expansion cylinders of each expander stage have a larger swept volume in sequence. A power output means 18 for extracting a power output from the multi-stage expander 20 is also provided. There may be an interstage reheater 32 provided between each adjacent expander stage. There may be an interstage scrubber 30 provided between each adjacent expander stage. The energy recovery system may generate electrical power at 50Hz or 60Hz.

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).

The invention provides a full-load adjustable state reconstruction type steam turbine set, a design method and an operation method thereof. The full-load adjustable state reconstruction type steam turbine set comprises a first low-pressure cylinder and a second low-pressure cylinder which are arranged in series, and a steam exhaust port of the first low-pressure cylinder communicates with a steam inlet of the second low-pressure cylinder; the dynamic rotating speed adjusting system is configured to adjust the rotating speed of the second low-pressure cylinder in real time according to the unit operation state, so that the rotating speed of the second low-pressure cylinder is independent of the rated rotating speed of the first low-pressure cylinder; the load matching mechanism is connected with the output end of the second low-pressure cylinder and used for transmitting mechanical work under the variable rotating speed. By dynamically adjusting the rotating speed of the second low-pressure cylinder, the blade linear speed tracks the change of the steam flow speed in real time, the stability of the speed ratio is reconstructed, under the low-load working condition, the rotating speed is synchronously reduced when the steam flow speed is reduced, and the speed ratio is forced to return to a design efficient area; a sectional rotating speed control strategy is adopted, steady-state operation is maintained in a rotating speed interval, the dynamic process duration is shortened by discretization rotating speed switching, and the alternating stress cycle number is restrained.

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 utility model provides a diesel generating set sharing a heat dissipation mechanism, which comprises a first power unit and a second power unit which are backup for each other, and further comprises a heat exchanger, and the heat exchanger comprises a first heat exchange piece; the first heat exchange part is provided with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is connected with a first flow dividing pipe, the first flow dividing pipe is connected with a first water valve and a first standby water valve, the liquid outlet pipe is connected with a second flow dividing pipe, and the second flow dividing pipe is connected with a second water valve and a second standby water valve. The first water valve and the second water valve are connected to the first power unit through pipelines respectively, and the first standby water valve and the second standby water valve are connected to the second power unit through pipelines respectively. The device has the advantages that the equipment cost is reduced, and the occupied space is reduced.

The invention discloses a 20MW axial steam exhaust low-vacuum heat supply steam turbine, and relates to the technical field of steam turbines. The problems that an existing thermal power generating unit supplies heat in a certain-stage steam extraction temperature and pressure reduction mode, the operation cost can be increased in the temperature and pressure reduction process, and the heat supply economical efficiency is poor are solved. The system comprises a main steam turbine and a small steam turbine, the main steam turbine is provided with a steam exhaust port and a steam extraction port, a steam guide pipe is connected to a steam inlet of the small steam turbine, a high-pressure main steam valve and a high-pressure adjusting valve are sequentially arranged on the steam guide pipe, the high-pressure main steam valve is located on the side away from the small steam turbine, and main steam in the main steam turbine enters the small steam turbine to do work; the steam temperature and the steam pressure after acting are both reduced, the steam of the small steam turbine is discharged to a heat supply system to heat circulating water of a heat supply network to achieve the heat supply function, the temperature and pressure of the steam do not need to be deliberately reduced, the small steam turbine can generate electricity when working, deep utilization of medium-pressure exhaust steam of the main steam turbine is achieved, meanwhile, the station service power consumption rate is reduced, and the heat supply economical efficiency is better.

The present invention discloses a multi-purpose oil pump sharing system and method of use. Multiple engines share two oil pumps, one for use and one for backup, achieving oil pump redundancy while reducing the number of engine-related pumps, their pipelines, and control devices. The control device is equipped with three self-resetting switches for lubricating oil pre-supply, waste oil discharge, and oil pan refueling, enabling switching and control of lubricating oil pre-supply, waste oil discharge, and oil pan refueling. The control device is equipped with a set of switches corresponding to each engine. Through the switch, the oil pump group can be used not only as a pre-supply pump for multiple engines, but also as a waste oil discharge pump and an oil pan refueling pump, thus achieving the multi-purpose use of the shared oil pump.

The invention belongs to the field of buoyancy power machines, and provides a liquid buoyancy power machine and a compressed gas liquid buoyancy power machine, the liquid buoyancy power machine comprises a water tank A and a water tank B, guide rails are arranged in the water tank A and the water tank B, and the two guide rails are arranged in the water tank A and the water tank B; and a buoy A is arranged between the two guide rails in the water tank A. Water in the water tank A is fed into the water tank B through the first booster pump, along with the rising of the water level in the water tank B, a buoy B drives a first rack B to move upwards under the action of buoyancy, a first flywheel B is driven by the first rack B to rotate clockwise and output power outwards, and water in the water tank B can be pumped into the water tank A through the first booster pump; the water level of the water tank A rises to drive the buoy A and the first rack A to rise, the first flywheel A is driven by the first rack A to rotate in the clockwise direction, circulation is conducted, and the output shaft continuously outputs power outwards.

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).

This method of assisting propulsion by detecting a failure of a turbine engine of an aircraft operating in a nominal mode, the aircraft comprising a deactivated assistance engine, comprises a step (2) of comparing operating parameters of the turbine engine with the equivalent parameters of a model representative of a healthy turbine engine, a step (4) of detecting a failure of the turbine engine by detecting an anomaly of at least one operating parameter of the turbine engine, a step (6) of choosing an activation mode of the assistance engine as a function of the operating parameters of the turbine engine and / or flight parameters of the aircraft, and a step (8) of activating the assistance engine with the chosen activation mode. Figure for the abstract: Fig. 1

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.