587 results about "Combined cycle" patented technology

The invention provides a one-key start-stop operation monitoring method and system for a gas-steam combined cycle unit, and relates to the technical field of equipment state monitoring, and the method comprises the steps: obtaining operation data, carrying out the data cleaning, noise reduction and standardization, and extracting the performance characteristics of the unit; constructing a component correlation model based on the spatial-temporal characteristics, and optimizing operation efficiency parameters; and performing fault diagnosis by using a multi-modal feature enhancement network, constructing a layered optimization control system, and performing control strategy optimization to obtain an optimal control strategy. According to the invention, intelligent monitoring, fault diagnosis and optimal control of the gas-steam combined cycle unit can be realized, the operation efficiency and reliability of the unit are improved, the fault risk is reduced, and the service life of equipment is prolonged.

The invention relates to the technical field of energy, in particular to a dynamic self-adaptive control method and system for a gas-steam combined cycle unit, and the method comprises the steps: constructing a multi-modal model library comprising a plurality of operation modes; operating parameters and environment parameters of the unit are collected in real time, and multi-source data fusion and system state evaluation are carried out; carrying out multi-time scale prediction on the load demand, fuel characteristics and environmental parameters of the unit based on a deep learning model; dynamically selecting model precision according to a prediction result, and implementing a multi-mode collaborative optimization decision to generate a control instruction; and executing the control instruction and monitoring an execution effect, and carrying out adaptive adjustment on model parameters and strategies according to feedback. According to the method, the unit can maintain efficient and stable operation under the scenes of power grid peak regulation, rapid load fluctuation, complex environment change and the like, meanwhile, pollutant emission is reduced, and the service life of key equipment is prolonged.

The invention discloses a gas-steam combined cycle unit power plant load prediction and optimal scheduling method and system based on artificial intelligence, and relates to the technical field of artificial intelligence. Load data and unit output of a gas-steam combined cycle unit power plant are recorded in real time; load fluctuation characteristics are extracted based on the load data, prediction error feedback is obtained, an adaptive time window mechanism is introduced, and the time window length of next prediction is adjusted according to the current load fluctuation characteristics and the prediction error feedback; extracting a multi-time scale fusion feature of the load data of each time step in the time window according to the updated time window length; constructing a load prediction model, and predicting future load data based on the multi-time scale fusion features of each time step; based on the current unit output, the future load data and the self-adaptive time window mechanism, constructing a reinforcement learning model to optimize the unit output adjustment value of the gas-steam combined cycle unit power plant; and the self-adaptability of load prediction and optimal scheduling is realized.

According to the thermal power generating unit emission prediction method based on machine learning, a thermal power generating unit comprises a gas turbine combined cycle power generation system, and the thermal power generating unit emission prediction method is characterized by comprising the following steps that time sequence data of each time step t of the thermal power generating unit are collected in real time, and the time sequence data comprise combustion parameters and mechanical state parameters of a gas turbine; obtaining input data of an input layer according to the combustion parameters and the mechanical state parameters; the transient condition of each time step t of the thermal power generating unit is obtained; generating an event marking sequence mt according to the transient working condition; and inputting the input data into an input layer of the LSTM model, and inputting the event marking sequence mt into an attention layer of the LSTM model to obtain an output predicted emission amount. According to the method, the transient working condition is directly input into the attention layer of the LSTM model as independent input, different transient working conditions can be accurately adapted, and the emission prediction capacity under complex scenes such as variable loads and start and stop is remarkably improved.

A thermal energy storage (TES) system converts variable renewable electricity (VRE) to continuous heat at over 900° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. The delivered heat which may be used for processes including power generation and cogeneration. Configurations of simple cycle systems and combined cycle power plants using thermal energy storage units can provide even greater efficiency and responsiveness.

The invention discloses a gas turbine air inlet temperature coordinated regulation and control system based on waste heat multi-stage utilization and an operation method, and relates to the technical field of combined cycle unit energy conservation, the system comprises a waste heat recovery module, an air inlet temperature regulation and control module, an energy conversion module and a control module; high-temperature exhaust smoke of the waste heat boiler is used as a heat source to heat a flue gas heat exchanger at the tail of the waste heat boiler of the combined cycle unit to generate hot water, and the hot water is used for directly heating inlet air of a gas turbine, driving an absorption heat pump to generate cold water to cool the inlet air of the gas turbine or driving an organic Rankine cycle module to generate power to be connected into auxiliary power, so that multipurpose utilization of waste heat of the unit is realized; in addition, the invention provides an operation method for synergistically improving the efficiency of the system and the combined cycle unit, the wide-load operation capacity and the partial-load energy utilization capacity of the unit can be effectively improved, meanwhile, the waste heat recovery capacity under the high-temperature condition is guaranteed, and the energy consumption efficiency of the unit is comprehensively improved.

The invention discloses a digital control integrated system for an auxiliary workshop of a power plant, and relates to the field of digital control, which comprises the steps of configuring sensor layout and measuring points, acquiring operating parameters based on sensors, acquiring processing parameters based on sensors, acquiring noise data based on sensors, and acquiring parameters of a heat supply system based on sensors. A multi-level sensor arrangement and operation parameter acquisition module, an industrial Ethernet control and multi-protocol interconnection communication module, a dynamic threshold comparison and combined cycle working condition analysis module and a cooperative control and multi-system synchronous scheduling module are configured in a power plant auxiliary workshop. The closed-loop monitoring and secondary correction control module and the historical database archiving and optimization learning module realize unified acquisition, centralized control and intelligent optimization of a gas turbine control system, a steam turbine control system, a waste heat boiler control system, a chemical water treatment control module, an environmental protection monitoring system and a heat supply system adjusting device.

The invention discloses a gas turbine exhaust temperature control method and system, and relates to the technical field of gas turbines.The method comprises the steps that operation data of a gas turbine unit are collected, and the generating efficiency of the unit is calculated in real time; according to the starting condition of IGV temperature control reference correction, whether the unit load triggers IGV temperature control reference correction logic or not is judged; and based on IGV temperature control reference correction logic, the IGV temperature control reference is dynamically adjusted, and the turbine exhaust temperature is controlled. According to the method, the generating efficiency of the unit is calculated in real time and compared with a historical efficiency value, the IGV temperature control reference correction is dynamically adjusted, so that the turbine exhaust temperature is always close to the optimal value within a safe range, the output matching degree of a gas turbine and a steam turbine is improved, and therefore the overall efficiency of the combined cycle unit is improved; and by setting a manual switching mechanism, an operator can disable a correction function at any time, a traditional control mode is recovered, and safe operation of the unit is prevented from being influenced when algorithm abnormity or extreme working conditions occur.

The invention relates to a coal-electricity coupling hydrogen production system and method in an electric power spot market environment, and the system is used for determining load output data of a coal-fired generator set according to a market price signal and a scheduling instruction through a coal machine power generation module. And the water electrolysis hydrogen production module is used for receiving the load output provided by the coal machine power generation module and supplying power to the alkaline electrolytic bath and the proton exchange membrane electrolytic bath through power conversion equipment to prepare hydrogen. And the hydrogen storage module is used for receiving the hydrogen of the water electrolysis hydrogen production module, purifying the hydrogen and storing the hydrogen in a hydrogen storage tank area. And the gas turbine hydrogen doping module is used for conveying hydrogen to the gas mixing station and the combustion-steam combined cycle unit through a pipeline according to the hydrogen storage amount of the hydrogen storage module and the load requirement of the gas turbine. The energy utilization efficiency of the coal-electricity coupling hydrogen production system is improved, and the problem that the coal-electricity coupling hydrogen production system is low in resource utilization rate and further low in economic benefit when power is supplied beyond the selling negative electricity price in the related technology is solved.

The invention discloses a supercharged SOFC / GT combined cycle system and a starting method, and relates to an SOFC / GT combined cycle system and a starting method. The invention aims to solve the problem that the requirements of short starting time and high energy utilization rate cannot be met in the prior art. The system comprises a gas compressor, the gas compressor is coaxially connected with a turbine and a permanent magnet synchronous motor, an outlet of the gas compressor is connected with an inlet of a first flow divider, one outlet of the first flow divider is connected with a first battery assembly, and the other outlet of the first flow divider is connected with an inlet of a second flow divider; one outlet of the second shunt is connected with a heat exchanger assembly, the other outlet of the second shunt is connected with a combustion chamber, an outlet of the combustion chamber is connected with a turbine, an outlet of the turbine is connected with a heat exchange assembly, the heat exchange assembly is connected with the combustion chamber, the permanent magnet synchronous motor is connected with a power grid bus, and the power grid bus is connected with a second battery assembly. The first battery assembly is connected with the power grid bus. The invention belongs to the technical field of energy power equipment.

The invention relates to the technical field of artificial intelligence and thermal power plant automation, in particular to a self-adaptive analysis method and related equipment for performance degradation of a combined cycle unit, and the method comprises the steps: obtaining historical and real-time operation data of the combined cycle unit, and determining related parameters of target parameters based on the historical data. And inputting the correlation parameters into corresponding prediction models, predicting to obtain an optimal value, and obtaining a target parameter prediction value according to the optimal value. Then, according to the predicted value and the real-time data, the degradation amount is calculated, the degradation amount reflects the abrupt change condition of the target parameter under the unit operation working condition, and if the degradation amount exceeds a preset threshold value, contribution degree analysis is conducted on relevant parameters of target parameter degradation of the abnormal time node; and finally, in combination with an analysis result and the fault knowledge graph, determining a fault reason, and giving a recommended maintenance scheme.

The invention relates to the technical field of gas turbine combined cycle systems, in particular to a load prediction method and system for a gas turbine combined cycle system based on a nonlinear regression model.The method comprises the steps that historical data of the cycle system are obtained, and the historical data comprise operation parameters, heat efficiency and system loads; based on the thermodynamic equation and the operation parameters, calculating to obtain the theoretical efficiency of the circulating system; using the operation parameters, the thermal efficiency and the theoretical efficiency to form a historical feature set; and predicting the load of the gas turbine combined cycle system. According to the method, a feature set containing real-time state monitoring, actual performance evaluation and physical limit constraint is constructed, irreversible loss in system operation is quantified, physical constraint conditions are provided for prediction, overfitting or working condition extrapolation failure caused by lack of physical significance of a pure data driving model is avoided, and prediction accuracy is improved.

The invention relates to the technical field of energy consumption optimization, and provides a heater energy consumption optimization method and system based on gas-steam combined cycle. The method comprises the steps that gas turbine exhaust, waste heat boiler steam and heater operation parameters are collected in real time, and a dynamic energy consumption data set is constructed; training a load prediction model based on the historical load curve and the meteorological data, and outputting future load distribution; performing multi-working-condition energy consumption simulation according to the data set and the predicted load, and generating an energy consumption characteristic topological graph and a thermal efficiency fluctuation graph; and based on the atlas, optimizing heater control parameters by taking energy consumption minimization as a target, generating an optimal control set, and regulating and controlling the running state of the heater. The technical problems that in an existing gas-steam combined cycle system, heater energy consumption control is not accurate, and efficiency fluctuation is large are solved, and the technical effects that through combination of real-time data collection and a prediction model, heater energy efficiency optimization and control parameter dynamic adjustment are achieved, and therefore energy consumption is reduced to the maximum extent, and heat efficiency is improved are achieved.

The invention relates to a zero-emission technology for producing power in a thermal plant using natural gas (NG) or liquefied natural gas (LNG), followed by capturing carbon dioxide (CO2) and converting it into green Dimethyl Ether (DME). The process integrates a gas-based combined cycle power plant with CO2 capture through Pressure Swing Adsorption (PSA) (106) and Monoethanolamine (MEA) purification. Captured CO2 undergoes a Reverse Water Gas Shift (RWGS) (306) reaction at temperatures above 900°C to form CO, which, along with syngas from steam methane reforming (308a, 308) at 525°C to 900°C and 25 ATA pressure, is converted into DME using a Cu / ZnO / Al2O3 catalyst at 250-300°C and 25-40 ATA. The process achieves an energy efficiency factor of 93.04%, producing 92 kg of DME per 48 kg of LNG, with a 94% greenhouse gas abatement, contributing to net-zero emissions (NZE) while generating bulk thermal power.

The invention discloses an integrated heat storage gas-steam combined cycle power generation system and an operation method thereof. The integrated heat storage gas-steam combined cycle power generation system comprises a gas turbine power generation unit, a fused salt heat storage unit and a waste heat boiler steam power generation unit. When sunlight is sufficient, the gas turbine power generation unit is switched to a low-load operation mode, the fused salt heat storage unit heats to generate reheated steam, inlet feed water of the waste heat boiler is preheated, and the peak regulation depth of gas-steam combined cycle is increased; and when sunlight is insufficient, the fused salt heat storage unit continuously releases heat storage capacity to maintain the stability of main steam parameters and quits operation until the heat storage capacity reaches a critical threshold value, at the moment, the gas turbine power generation unit is improved to the reference load to operate, and stable power supply of a power grid is ensured. The novel hybrid power generation system is constructed by fully utilizing the heat storage characteristic of the fused salt and combining the flexible scheduling capability of the gas turbine unit, so that the operation flexibility is improved, the fuel consumption is reduced, and the energy utilization efficiency is improved.

The invention discloses a fuel gas and steam combined cycle power generation system coupling fused salt heat storage and biomass energy storage, which comprises a fuel gas and steam combined cycle power generation subsystem, a fused salt heat storage and release subsystem and a biomass energy storage system, an outlet of the gas-steam combined cycle power generation subsystem is connected with the fused salt heat storage and release subsystem and the biomass energy storage system, and a smoke outlet of the biomass energy storage system is connected with the gas-steam combined cycle power generation subsystem. And the utilization efficiency of energy and the economical efficiency of the system are improved.

A power plant is configured to output power to a grid power system and comprises a hydrogen generation system configured to produce hydrogen, a gas turbine combined cycle power plant comprising a gas turbine engine configured to combust hydrogen from the hydrogen generation system to generate a gas stream that can be used to rotate a turbine shaft and a heat recovery steam generator (HRSG) configured to generate steam with the gas stream of the gas turbine engine to rotate a steam turbine, a storage system configured to store hydrogen produced by the hydrogen generation system, and a controller configured to operate the hydrogen generation system with electricity from the grid power system when the grid power system has excess energy and balance active and reactive loads on the grid power system using at least one of the hydrogen generation system and the gas turbine combined cycle power plant.

An air breathing engine system has an engine inlet configured to receive a flow of air. A combustor is in fluid communication with the engine inlet. A rocket ejector is positioned between the engine inlet and combustor. The rocket ejector is connected to the combustor with a mixing tube. The rocket ejector adjustably outputs high-temperature gas into air in the mixing tube. The high-temperature gas changes a pressure and thermal energy of the air within the mixing tube, which can be used to optimize combustor operation, such as based on a trajectory, flight condition, or speed of an aircraft propelled by the air breathing engine system.

An adjusting device for a water system of a combined cycle unit comprises a controller, the combined cycle unit, a cooling water tank, a sedimentation filter tank, a medicament reaction tank, a scale inhibitor water tank, a corrosion inhibitor water tank, a sterilization algicide water tank, a diverter pump, a cooling tower, a standby water storage tower, a confluence water pump and a temperature measurement and control device. According to the device, all the parts are connected through the water conveying pipeline, cyclic utilization and dosing treatment of cooling water are achieved, water scale is reduced, the metal corrosion speed is slowed down, and microorganism growth is inhibited. When the temperature of the combined cycle unit exceeds a set threshold value, the temperature measurement and control device can send an electric signal to the controller, the controller controls the standby cooling tower to be started and pumps cooling water into the standby water storage tower to be cooled, and the cooling water is pumped into the combined cycle unit to be cooled after being cooled. And finally, cooling water is pumped back to the cooling water pool through a water pump, and a circulation period is completed.

The invention provides a gas turbine and solid oxide fuel cell combined cycle system. The gas turbine and solid oxide fuel cell combined cycle system comprises a gas turbine engine mainly composed of a gas compressor, a main combustion chamber, a turbine, a fuel tank and the like; a heat exchange system is mainly composed of liquid ammonia storage equipment, an integrated heat exchanger and a cracking device, the integrated heat exchanger comprises an air-air heat exchanger and an ammonia-air heat exchanger, the air-air heat exchanger is communicated with an outer culvert air entraining and gas compressor, and the ammonia-air heat exchanger is communicated with the liquid ammonia storage equipment, the cracking device and a turbine. The air-air heat exchanger is communicated with the ammonia-air heat exchanger in the integrated heat exchanger; the cracking device is communicated with the main combustion chamber; the airborne equipment power supply system is mainly composed of a solid oxide fuel cell, a cell and an electric power system, the solid oxide fuel cell is connected with the air-air heat exchanger and the ammonia-air heat exchanger of the integrated heat exchanger and used for generating electric energy, and the cell and the electric power system are connected with the solid oxide fuel cell and used for conducting electric energy storage and electric power control.

The utility model discloses a novel combined cycle unit flue gas waste heat utilization seawater desalination system which comprises a waste heat boiler hot water system, a material water supply system, a cooling water system, a saline water system, a finished product water system and a vacuum system, the waste heat boiler hot water system comprises a waste heat boiler, a steam-water separator, an evaporator and a condenser which are connected in sequence, and the steam output end of the steam-water separator is connected with the evaporator; the hot water output end of the steam-water separator is connected with the waste heat boiler through a hot water return pipeline; a hot water booster pump is arranged on the hot water return pipeline; the evaporators are multi-effect evaporators and have eight effects, and the condensed water output end of the first-effect evaporator of the evaporators is connected with the hot water return pipeline. According to the scheme, the tail heating surface is additionally arranged on the basis of an original boiler, the exhaust gas temperature of the waste heat boiler is reduced, the recycled heat is increased, and the external hot water supply amount is increased under the condition that the power generation output of an original unit is not affected.

A thermal energy storage (TES) system converts variable renewable electricity (VRE) to continuous heat at over 900° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. The delivered heat which may be used for processes including power generation and cogeneration. Configurations of simple cycle systems and combined cycle power plants using thermal energy storage units can provide even greater efficiency and responsiveness.

The invention belongs to the technical field of gas turbine cooling, and particularly relates to a gas turbine cooling air multi-energy combined supply system. Comprising a multi-energy combined supply system, a gas turbine system and a transcritical Rankine cycle system, the gas turbine system and the transcritical Rankine cycle system are coupled through a TCA, cooling air in the multi-energy combined supply system is cooled through the TCA and then enters a gas turbine, and a medium in the transcritical Rankine cycle system absorbs heat in the TCA and then enters a turbine to expand and do work. Cooling water outside the system absorbs heat through a condenser in the transcritical Rankine cycle system to form high-temperature water, the high-temperature water supplies heat to a bromine cooling unit in the multi-energy combined supply system, and low-temperature water generated by the bromine cooling unit is atomized and then mixed with inlet air of an air compressor so as to reduce the inlet air temperature. According to the system, the combined cycle power generation efficiency can be improved, multi-energy combined supply and stable energy recovery of gas turbine cooling air can be achieved, and safe operation of a gas turbine cooling system is fundamentally guaranteed.

The invention relates to the technical field of engines, and discloses a turbine-based combined cycle engine operation method and a turbine-based combined cycle engine, and the turbine-based combined cycle engine operation method comprises the steps that a pulse detonation combustion mode is adopted in a pure turbine mode; a rotary detonation combustion mode is adopted in a pure stamping mode; a pulse detonation combustion mode is adopted in the transition mode, and meanwhile, a rotary detonation combustion mode is adopted. By utilizing the advantages of self-pressurization and high unit thrust of pulse detonation combustion, the high-speed performance is improved, and the working Mach number upper limit of a pure turbine mode is widened; by utilizing the advantages of high combustion speed, high combustion efficiency, simple structure and short length of rotary detonation combustion, the lower limit of the working Mach number of a pure stamping mode is widened. And in the transition mode, the characteristics of a pure turbine mode and a pure stamping mode are achieved at the same time, and enough thrust is provided for the aircraft.

The present application relates to a kind of photovoltaic direct-drive air source injection-compression combined cycle heat pump cogeneration system, the system includes refrigerant system, hot water system, power generation / power supply system, by compressor, check valve, hot water heat exchanger, two-phase ejector, gas-liquid separator, electronic expansion valve, intermediate cooler, finned heat exchanger, water pump, photovoltaic array, direct-current converter, AC / DC inverter is formed, system can realize cogeneration.The present application introduces injection refrigeration technology into air source heat pump technology, to reduce the throttling loss and overheating loss of traditional vapor compression cycle process, improve system performance;While using the method of low injection rate to supercool finned heat exchanger inlet refrigerant, the uniformity of finned heat exchanger refrigerant distribution is guaranteed, and its heat exchange efficiency is improved.The present application makes full use of renewable energy solar energy and air energy, realizes electric energy self-production, energy saving, efficient, green, low carbon.

The invention discloses a hydrogen fuel SOFC actual combined cycle power generation system based on gas turbine pressurization, and belongs to the technical field of energy power equipment. In the starting stage, air is compressed by a gas compressor and then enters a combustion chamber to be combusted with hydrogen, exhausted gas is introduced into a turbine to do work, electric energy is provided for temperature rise before SOFC reaction through a motor, and turbine exhausted gas sequentially heats hydrogen and air at an inlet of the combustion chamber. Under the stable operation working condition, air sequentially passes through a gas compressor, a flow divider and a heat exchanger to be introduced into an SOFC cathode, hydrogen is heated through the heat exchanger and enters an SOFC anode to be subjected to an oxidation reaction, cathode and anode tail gas and supplemented gas enter a combustion chamber to be combusted, exhaust gas enters a turbine to do work and then is exhausted, and turbine exhaust gas sequentially heats hydrogen of SOFC anode inlet gas and air of cathode inlet gas; wherein the SOFC anode tail gas heats hydrogen supplemented by the combustion chamber through the heat exchanger, and the SOFC cathode tail gas heats air supplemented by the combustion chamber through the heat exchanger.

The invention relates to a gas-steam combined cycle and compressed air energy storage integrated power generation system. The system comprises a gas turbine power generation subsystem, a steam turbine power generation subsystem, a compressed air energy storage subsystem and a synchronous self-gear-shifting clutch. The gas turbine power generation subsystem comprises at least one gas turbine generator set, and the gas turbine generator set comprises a gas compressor; the steam turbine power generation subsystem comprises a steam turbine and a waste heat boiler; the compressed air energy storage subsystem comprises a compression unit, an expansion unit and an air storage unit; the steam turbine is connected with the compression unit through the synchronous self-gear-shifting clutch. The waste heat boiler is connected with the gas turbine generator set and the expansion unit. The gas compressor is connected with the gas storage unit. By adopting the system, the operation flexibility of gas-steam combined cycle power generation can be improved.

The invention discloses a gas turbine combined cycle cooling, heating, power and hydrogen combined supply system coupling high-temperature heat storage and phase change cold storage and an operation control method thereof, the system is composed of a power plant inner side subsystem and an outer side subsystem, the power plant inner side subsystem comprises a gas turbine combined cycle unit, a high-temperature heat storage unit and a steam collector, the split-flow heat storage of high-temperature exhaust smoke heat and the flexible allocation of high-temperature steam are realized; the system comprises a hydrogen production unit and a heat and cold supply pipe network, and is combined with a steam turbine, an absorption refrigeration device, a mechanical refrigeration device and a phase change cold storage device, so that efficient supply and gradient utilization in a multi-energy form are realized. The operation control method provided by the invention comprises the steps of parameter acquisition and demand prediction, steam distribution regulation and control, heat storage and heat release management, hydrogen production load regulation and waste heat coupling utilization, cold and heat energy regulation, cold storage balance and the like, and is assisted by layered optimization control of an energy management platform; and multi-energy cooperative supply and flexible peak regulation of electric power, heat energy, cold energy and hydrogen energy can be achieved.

The invention discloses a blowback monitoring and alarming method and system for a bag filter, and belongs to the field of coal gasification combined cycle power generation, and the method comprises the steps: obtaining first change data of an electromagnetic valve through a PLC of the bag filter; a pressure transmitter is connected to the PLC, and second change data of the nitrogen mother pipe are obtained through the first change data; setting a pressure drop threshold value according to the second change data, associating the pressure drop threshold value with a blowback air inflow, and carrying out a blowback action; when the pressure drop is lower than a threshold value, the PLC gives an abnormal alarm; and the abnormal electromagnetic valve is positioned according to the second change data point giving the alarm. The defects of equipment installation of an original filtering system are overcome, an alarm can be given out in time for tiny abnormity of the blowback system, and a reliable basis is provided for operation and maintenance of the equipment. Meanwhile, each action of each blowback pulse valve can be monitored, and normal and stable work of the pulse valves is guaranteed. And the device has a very high popularization value for optimization and improvement of a bag type dust filtering system.

The invention discloses a thermal power generating unit, supercritical carbon dioxide and compressed air combined cycle energy storage system and an operation method, and belongs to the technical field of peak and frequency regulation and waste heat utilization of energy systems. The system comprises a compressed air energy storage subsystem, a supercritical CO2 Brayton cycle subsystem, a thermal power collaborative heat exchange subsystem, a coupling heat exchange device and an intelligent control system. In the energy storage stage, efficient compression is achieved through multi-stage compression and intermediate cooling, and air and CO2 are stored separately; in the energy release stage, compressed air drives an air expansion machine to generate power after being subjected to steam extraction and flue gas preheating of the thermal power plant, and meanwhile supercritical CO2 circularly utilizes waste heat of boiler tail gas of the thermal power plant and system tail gas to be preheated and expanded to serve as a second heat source channel to improve the output power. The intelligent control system coordinates the operation conditions of all the subsystems, and flexible switching of the system under various load and heat source boundaries is achieved. The system has high energy efficiency, high response speed and high integration level, and the peak regulation capacity and the clean operation level of the thermal power generating unit are remarkably improved.