267 results about "Steam power" patented technology

The invention relates to the technical field of power generation system transformation, in particular to an energy storage power generation system and method based on thermal power plant transformation. The Carnot battery unit comprises a liquid carbon dioxide storage tank, an electric heater, a compressor, a heat storage transducer heat flow channel and an expansion machine which are connected in sequence, and the liquid carbon dioxide storage tank adopts a boiler drum of a thermal power plant and stores liquid carbon dioxide liquefied by a water chilling unit of the thermal power plant; the heat storage circulating unit exchanges heat with a heat flow channel of the heat storage transducer to store heat; the steam power generation unit adopts a thermal power plant steam generator set and extracts heat stored by the heat storage circulation unit for steam power generation. The thermal power generating unit is transformed into the carbon dioxide Carnot battery energy storage system, the defect that a power grid is unstable in the process that a traditional thermal power plant is gradually converted into new energy is overcome, double stable output electric quantity is achieved, the system efficiency is improved, and meanwhile high economic benefits are achieved.

A gas and steam power generation afterburning type heat-electricity decoupling system and a working mechanism thereof, characterized in that the system comprises a gas turbine power generation system, a power transmission and transformation system, a molten salt heat storage system and a steam power generation system; the gas turbine power generation system is connected with the molten salt heat storage system through a flue gas pipeline; the molten salt heat storage system is connected with the power transmission and transformation system through a cable; the gas turbine power generation system is connected with the power transmission and transformation system through a cable; the molten salt heat storage system is connected with the steam power generation system through a main steam pipeline and a backwater pipeline; and the steam power generation system is connected with the power transmission and transformation system through a cable. The system can realize complete heat-electricity decoupling in a green energy storage system, realize the functions of self-supply of external power, storage of green electricity or heat supply, increase the accommodation capacity of a power grid to green electricity, and enhance the stability, flexibility and safety of a new power system.

The invention provides an industrial wastewater recovery treatment device, and belongs to the technical field of wastewater recovery. Comprising a base, a supporting frame is arranged at the top of the base, a wastewater tank is connected to the inner side of a mounting frame, a mounting box is connected to the bottom of the wastewater tank and communicates with an evaporation treatment tank through a pipeline, and a steam power generation module is connected to one side of the evaporation treatment tank through a pipeline; the industrial wastewater treatment device comprises a mounting box, a collecting tank is arranged below the mounting box, the industrial wastewater treatment device further comprises a filter assembly, the filter assembly is mounted on the inner side of the mounting box, and the filter assembly is used for filtering industrial wastewater. By arranging the filtering assembly, controlling the flow of industrial wastewater through the opening and closing degree of the gate and using the filtering layers with different densities, the situation that when the flow is too large, scrap iron impurities are gathered in one area and block the filtering layers when filtering is conducted only through one filtering layer, and consequently the filtering efficiency is low is avoided.

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 spin-drying device for seaweed for sports injury repair and a working method thereof.The spin-drying device for the seaweed for sports injury repair comprises a suspension type drying frame, a steam power boiler and a dehydration dryer, the steam power boiler generates high-pressure steam by collecting light and heat, the high-pressure steam enters the turbine transmission machine to drive the turbine transmission machine and drive the suspension type drying frame to rotate, and the suspension type drying frame can be unfolded during rotation. During use, after the suspension type drying frame is unfolded, seaweeds are put into the dehydration dryer, the drying frame can scatter the seaweeds and hang the seaweeds on the suspension type drying frame, at the moment, the suspension type drying frame drives the seaweeds to rotate at a high speed, so that water on the surfaces of the seaweeds is thrown away, airflow flow is formed, and meanwhile steam releases heat through the turbine transmission machine; the drying device is used for increasing the temperature in the dehydration dryer, so that seaweed is dried under the combined action of centrifugal force and high-speed airflow.

A steam power cycle thermoelectric decoupling system includes a molten salt heat storage system, a steam accumulator heat storage system, and a preheating system. The steam accumulator heat storage system is taken as a main heat storage component, which solves low heat storage efficiency and high heat storage costs by simply using molten salt. Saturated steam released by the steam accumulator heat storage system is heated to a superheated state by heat stored in the molten salt heat storage system, achieving supplement of the saturated steam released by the steam accumulator heat storage system to the heat supply network, and the preheating system is utilized for solving the problem that the temperature of steam output from the steam accumulator heat storage system is lower than the solidifying point temperature of the molten salt, causing the solidification of molten salt.

The invention belongs to the technical field of waste heat recovery, and relates to a smelting flue gas waste heat power generation system based on modular heat storage and a control method thereof.The system comprises a smelting kiln and a flue gas system thereof, and the smelting kiln and the flue gas system comprise the smelting kiln, a cooling flue, a flue, a high-temperature dust remover, a high-temperature induced draft fan, a chimney, a quench cooler and a waste heat boiler; the modular heat storage system comprises modular heat storage units, and each modular heat storage unit comprises a first-stage modular heat storage unit group and a second-stage modular heat storage unit group which are connected in series; the steam power generation system comprises a steam-water pipeline, a steam pocket, a steam heat accumulator, a steam turbine, a condenser, a deaerator and a circulating pump. The modular heat storage unit is used for recycling and storing part of flue gas waste heat in a stepped mode, most of the remaining flue gas still enters a conventional waste heat boiler to release heat, smoothness of steam generation fluctuation of the steam heat accumulator and overheating of all saturated steam are achieved, and the technical bottleneck of stable overheating steam power generation of smelting flue gas waste heat is broken through.

The invention relates to the field of power generation, and provides a wind, light and heat storage flexible adjustment power generation system which comprises a grid-connected controller and a Carnot battery system which are connected, and the Carnot battery system comprises a first heat pump, a heat exchanger and at least two heat storage tanks; the wind and light power generation system is electrically connected with the grid-connected controller, and the grid-connected controller is used for splitting total fluctuation electric energy generated by the wind and light power generation system into a reference electric energy component and a fluctuation electric energy component; the input end of the electric heater is connected with the grid-connected controller, and the electric heater is used for heating the heat storage tank by utilizing the fluctuation electric energy component; the steam power generation system comprises a steam turbine; the at least two heat storage tanks comprise a low-temperature tank and a high-temperature tank, the first heat pump is used for conveying heat in the low-temperature tank to the high-temperature tank, the heat in the high-temperature tank is introduced into the heat exchanger to heat condensate water into superheated steam, and the superheated steam is used for pushing the steam turbine to generate power. Through a grid-connected controller and a Carnot cell, flexible and stable power supply of wind-solar heat storage and efficient utilization of electric energy are realized.

The invention discloses a solar energy-biomass collaborative conversion distributed energy system based on calcium-based thermochemical heat storage driving biomass gasification. The solar energy-biomass collaborative conversion distributed energy system comprises a heat storage system, a biomass gasification system, a solid oxide fuel cell combined gas turbine power generation system, a Rankine cycle power generation system, a hot water supply system and pipelines for connecting all the systems. According to the heat storage system, heat energy is stored in the form of chemical energy through the concentrating solar energy technology and the calcium-based thermochemical heat storage technology, and continuous operation of the system is guaranteed. According to the biomass gasification system, heat released in the calcium oxide carbonation process is used for providing heat for the biomass gasification furnace, and biomass materials are converted into high-temperature synthesis gas. And then the high-temperature synthesis gas passes through a high-temperature purification device and then enters a solid oxide fuel cell-gas turbine system of top layer circulation to generate electric power. And finally, the waste heat flue gas provides heat energy for a steam power Rankine cycle and a hot water supply system.

A liquid blast furnace slag granulation and waste heat recovery system and method, which comprises a cyclone heat exchange device, a granulation device, a waste heat recovery device and a steam power generation device. Compressed air and water are mixed in the granulation device injector cavity to form a high-speed jet, which shears the molten blast furnace slag from the flow guide cover, and the molten slag is broken and solidified into solid particles; the granulated blast furnace slag enters the cyclone heat exchanger with high-temperature air and water vapor to achieve rapid separation, the deoxygenated water is transported into the spiral pipe bundle and exchanges heat with the high-temperature gas outside the pipe to obtain saturated or superheated steam, which is transported to the second heat exchanger of the waste heat recovery device; the high-temperature slag separated from the gas enters the first heat exchanger of the waste heat recovery device, and the cooling water flowing therein rapidly absorbs the heat of the high-temperature slag to change into water vapor; the saturated or superheated water vapor generated by the steam drum, the first and second heat exchangers of the cyclone heat exchange device enters the steam turbine to drive the power generation device, and finally the thermal energy is converted into electric energy which is supplied to users through the power transmission and distribution device.

The invention relates to the field of nuclear energy comprehensive utilization, in particular to an operation control method of a nuclear energy industry steam supply system. The method comprises the following steps: step 1, setting a total load value of a secondary circuit; the total load value of the secondary loop comprises a steam turbine generator load and a nuclear energy steam supply load; the reactor power is maintained at a full power level to reduce the total load fluctuation of the secondary loop to the greatest extent; 2, nuclear energy steam supply steam flow is obtained, the nuclear energy steam supply steam flow is multiplied by a coefficient K, and a nuclear energy steam supply load is obtained through calculation; the coefficient K is obtained according to the ratio of the unit main steam power generation degree to the electric power of the original steam turbine generator; 3, according to the total load value of the secondary circuit and the nuclear energy steam supply load, the load upper limit value of the steam turbine generator is calculated; and step 4, adjusting an electric power set value according to the upper limit value of the load of the steam turbine generator. According to the invention, safe operation of the main steam supply system of the nuclear reactor in an industrial steam supply mode is realized.

The utility model relates to the technical field of steam power generation turbines, in particular to a mixed flow type saturated steam power generation turbine which comprises a cylinder, the cylinder comprises a vertical inlet cavity and a horizontal outlet cavity which are communicated, and reinforcing ribs are arranged at the positions, corresponding to the joint of the two cavities, of the inner wall of the cylinder. A protruding structure at the bottom of the side, away from the horizontal outlet cavity, of the outer wall of the air cylinder is fixedly connected with a gearbox. The stationary blade assembly comprises a first-stage radial flow stationary blade fixedly arranged on the inner wall of the vertical inlet cavity and a second-stage axial flow stationary blade fixedly arranged on the reinforcing ribs; the rotor assembly comprises a rotating part connected with the high-speed shaft of the gear box, a first-stage radial flow vane impeller and a second-stage axial flow vane impeller, wherein the periphery of the rotating part is sleeved with the first-stage radial flow vane impeller and the second-stage axial flow vane impeller. The radial flow turbine and the axial flow turbine are combined to form the mixed-flow turbine, so that the working capacity of a single cylinder is improved, the power generation efficiency is improved, the cost is saved, and the unit size is reduced.

The present invention provides a coaxial wind and steam complementary power generation device, which relates to the technical field of wind turbines, comprising a base, a generator being installed on the top of the front end of the base, and a bracket being fixed on the top of the generator, a fan being installed on the top of the bracket, a transmission rod being rotatably installed on the tail end of the gear box of the fan, and the transmission rod being coaxially connected to the fan, a transmission assembly being provided at the rear end of the transmission rod, and a steam engine being fixed at the rear end of the base. Compared with the prior art, the reciprocating propulsion motion of the piston plate and the piston rod is pulled by a pull rope, thereby increasing the flow of air in the combustion furnace inside the steam engine, accelerating the coal combustion efficiency, and improving the heating speed of the steam engine. In an environment without wind, the steam engine switches the connection, and part of the heat is blown out from the air outlet to drive the fan blades to rotate, thereby relying on the work of the steam engine to drive the fan to continue to rotate, thereby achieving that steam power generation and wind power generation can still be carried out synchronously in an environment without wind.

The application discloses a generator set shared peak regulation system and a working method thereof. The system comprises a steam generator, a steam power generation device, a heat recovery device, a generator, an energy storage switch, a water taking shutoff valve, a backwater regulating valve, a molten salt cold tank, a cold molten salt pump, a molten salt electric heater, a hot molten salt tank, a hot molten salt pump, a feedwater heater inlet shutoff valve, a feedwater heater, a feedwater heater outlet shutoff valve, a heat network water heater inlet shutoff valve, a heat network water heater, a heat network water heater outlet regulating valve and a heat network water taking shutoff valve. The application realizes the peak regulation of two or more generators by one peak regulation system, is a shared energy storage system, uses a heat storage medium such as molten salt to realize large-capacity, long-time and high-quality energy storage, realizes the deep peak regulation of the unit, and the heat energy has diversified uses. The application can realize the flexible transformation of the whole plant through single investment, and has high equipment utilization.

The application relates to an IGCC system coupled with biomass and near-zero emission high-purity CO2 capture and a working method thereof, and belongs to the field of coal gasification combined cycle power generation coupled with biomass, in particular to an IGCC system coupled with biomass and near-zero emission high-purity CO2 capture and a working method thereof. The application is used for solving the problems that the existing IGCC system has low CO2 capture rate, high energy consumption, low power generation efficiency, and a large amount of nitrogen generated in the oxygen taking process and difficult to effectively utilize. The application comprises an air separation device, a gasification furnace, a sensible heat recovery device, a purification device, a gas power generation unit, a waste heat recovery unit, a steam power generation unit, a biomass fermentation device, a methane reforming unit, an adsorption separation unit and an ammonia synthesis tower. The application is based on the overall coal gasification combined cycle power generation system of post-combustion CO2 capture and oxygen-enriched combustion technology, introduces a biomass ammonia synthesis process, generates H2 and CO through biomass fermentation and reforming, utilizes N2, and improves the system efficiency.

To provide a control device, a control method and a control program for a steam power generation plant which allows separation of some steam generators while maintaining a stable operation state.SOLUTION: At least one of steam supply systems in a composite cycle power generation plant comprises: a first steam generator; a first passage in which steam generated by the first steam generator flows; a second steam generator; a second passage in which steam generated by the second steam generator flows; a third passage connecting a merging part of the first passage and the second passage and a steam turbine; and a bypass passage branching from the first passage. A first cutoff valve and a second cutoff valve are arranged in the first passage and the second passage, and a bypass valve is arranged in the bypass passage. In such a plant, an opening operation from a full-closed state of the bypass valve is started at a separation start timing of starting a closing operation from a full-open state of the first cutoff valve with the second cutoff valve fully opened.SELECTED DRAWING: Figure 2

High-temperature and high-pressure gas is generated according to an internal combustion engine steam engine basic principle using method to drive piston motion, and the motion is converted into mechanical motion. The design principle of the hydrogen water vapor power internal combustion steam engine is based on the principle. According to the characteristic that the combustion temperature of hydrogen is high, the characteristic that water can be electrolyzed into hydrogen and oxygen, and the characteristic that the boiling point of the water under conventional atmospheric pressure is 100 DEG C, the hydrogen water vapor power internal combustion steam engine is integrated to obtain a result.

The invention relates to the technical field of energy power, and particularly discloses a power generation device for generating water vapor energy through an internal combustion engine set. The device comprises a compression starting system, a heat energy exchange system, a steam power system, a residual pressure and circulation system and an intelligent management system. A compression system is started to compress air to generate high-temperature and high-pressure gas; the heat energy exchange system uses the gas to heat water into high-pressure steam; the steam power system is driven by steam to generate electricity; the residual pressure and circulating system recycles dead steam residual pressure to drive air inlet pressurization, heat preservation is conducted through waste heat, and steam is condensed into water to be recycled; and the intelligent management system performs cooperative control. Water vapor autonomous power generation is achieved through physical compression and countercurrent flow heat exchange, energy gradient utilization and working medium closed-loop circulation are achieved, and the device has the advantages of being efficient, clean and capable of running continuously.

The utility model discloses a device for monitoring flue gas data on line. The device comprises a base; the smoke discharging cylinder is arranged on one side of the top end of the base; the mounting bracket is fixedly arranged on one side of the smoke exhaust cylinder; the first smoke storage box is fixedly arranged at the top end of the mounting bracket; the second smoke storage box is fixedly arranged at the top end of the base; the steam power generation mechanism is arranged in an inner cavity of the first smoke storage box; the smoke cooling assembly is arranged at the top end of the second smoke storage box; and the flue gas monitor is fixedly arranged on the other side of the top end of the base. According to the flue gas on-line data monitoring equipment, the steam power generation mechanism is arranged to heat the heating water tank through heat generated by high-temperature flue gas, so that water in the heating water tank is boiled to generate steam, the steam is transmitted into the steam power generator through the steam pipe to generate power, energy conversion and utilization are achieved, energy is saved, and the energy utilization rate is increased. Monitoring equipment damage caused by high-temperature flue gas is avoided, and the accuracy of monitoring data is improved.

The utility model relates to the field of waste heat utilization, in particular to a waste heat utilization device for a cement kiln, which comprises a bottom plate and a heat exchange mechanism, and steam power generation equipment is mounted at one end of the bottom plate. After the device works for a long time, if more dust adheres to the surfaces of the heat collecting pieces located in the heat collecting box and affects heat exchange, the rotating rod is rotationally connected with the heat collecting box, a rotating handle at the upper end of the rotating rod is held and rotated by a half circle, and therefore the heat collecting pieces originally located outside the heat collecting box are rotated into the heat collecting box for heat exchange; and then the heat collecting pieces with the surfaces adsorbed with a large amount of dust are cleaned, and therefore continuous operation can be achieved, and loss of high-temperature waste gas can be reduced to the maximum extent.

The invention relates to the technical field of saturated steam power generation, in particular to a saturated steam power generation system for waste heat steam gradient utilization, and aims to improve waste heat recovery efficiency and system stability. The input end of the main steam-water separator is connected with a middle-high pressure waste heat steam source through a main steam inlet pipeline; the input end of the steam supplementing steam-water separator is connected with a low-pressure waste heat steam source through a steam supplementing inlet pipeline; the steam turbine comprises a high-pressure cylinder and a low-pressure cylinder; the high-pressure cylinder is connected with the output end of the main steam-water separator through a main steam pipeline, and the low-pressure cylinder is connected with the output end of the steam supplementing steam-water separator through a steam supplementing steam pipeline. The generator is connected with the steam turbine; a steam inlet of the condenser is connected with a steam exhaust port of the steam turbine through a steam exhaust pipeline, and a condensed water outlet is connected to a user point through a water return pipeline. And gradient utilization and collaborative operation are adopted in the system, and maximum utilization of steam energy is achieved.

The present invention provides an electrically coupled wind and steam complementary power generation device, which relates to the technical field of wind power generation devices. The device comprises a steam box, a heating chamber is provided inside the steam box, and a combustion chamber is provided at the bottom of the heating chamber. A heat transfer component is provided on the top of the steam box, and the heat transfer component comprises a water tank, a water storage layer is provided inside the water tank, and two vertical pipes are connected to the bottom of the water storage layer. The bottoms of the vertical pipes are inserted into the heating chamber, and serpentine pipes are fixed to the bottoms of the two vertical pipes. Through the cooperation of the heat transfer component, the transmission component and the drive component, during wind power generation, part of the kinetic energy is transferred to the water tank for frictional heating, and the heat is transferred to the heating chamber to preheat the water to a certain extent. During steam power generation, the temperature in the heating chamber is transferred to the water tank for pre-storage, thereby reducing the time spent on heating water to generate steam next time. The two power generation methods cooperate with each other to improve power generation efficiency and reduce energy consumption.

The present application relates to carbonization equipment technical field, specifically to a kind of carbonization system, the bottom of carbonization furnace is provided with smoke exhaust groove and cracking groove, respectively cover heat exchange plate and heat conducting plate, smoke flue is arranged in the bottom of carbonization furnace, so that the design of downward smoke exhaust can avoid to a certain extent in the carbonization process smoke emission outside. Heat conducting plate is used to the tar in the smoke gas passing in cracking groove for secondary cracking, it is convenient to burn steam power generation device and the combustible material such as cracking tar in water gas and smoke gas is burned to generate electricity, reduce the consumption of external electric energy to burn power generation. And the heat exchange tube passing in heat exchange plate can heat the water in the combustion steam power generation device and vaporization spray pipe, improve the energy utilization of biomass. High-temperature carbon discharged by carbonization furnace is received by cooling stack carbon chamber, and high-temperature water mist is sprayed by vaporization spray pipe, so that water gas can be prepared in addition to cooling high-temperature carbon, and one can achieve two goals.

The invention provides a dual-power coupling type wind and steam complementary power generation device, and relates to the technical field of wind power generation devices, the dual-power coupling type wind and steam complementary power generation device comprises a generator set, the top of the generator set is provided with a wind power generation device, the wind power generation device comprises a mounting rod, the top of the mounting rod is fixedly provided with a gear box, and the two ends of the gear box are provided with connecting shafts; a first fan blade is arranged at the front end of the gearbox, a second fan blade is arranged at the rear end of the gearbox, sleeve frames are fixed to the positions, corresponding to the connecting shaft, of the first fan blade and the second fan blade, the connecting shaft is sleeved with the sleeve frames, and openings are formed in the upper ends of the sleeve frames. One group is disassembled through the disassembly assembly and then sent down for maintenance, and the other group is replaced for use, so that continuous operation of the wind power generation device is kept, high-temperature compressed gas is fed into the steam power generation device through the compression assembly, fuel consumption is reduced, and power generation is completed jointly.

The invention relates to a steam power system fault determination method and device, computer equipment, a readable storage medium and a program product. The method comprises the following steps: inputting real-time monitoring data of a target measurement point into a first residual attention module in a plurality of residual attention modules, sequentially processing the real-time monitoring data by the plurality of residual attention modules, and obtaining a full-connection network based on an output feature obtained by processing the last residual attention module in the plurality of residual attention modules and the full-connection network; and obtaining the fault type of the steam power system. The fault type of the steam power system is determined through sequential processing of the multiple residual attention modules, and the accuracy of the obtained fault type can be improved.

The invention discloses a heat supply and power generation system coupled with molten salt heat storage to improve the flexibility of a thermoelectric load and an operation method. The heat supply and power generation system comprises a multi-source heat source module, a molten salt heat storage and release module, a steam power generation module, a graded heat supply module, a multi-medium heat exchange module and an intelligent regulation and control module. The multi-source heat source module comprises a pulverized coal boiler of a main heat source unit and a solar trough heat collector array and a biomass circulating fluidized bed boiler of an auxiliary heat source unit; the molten salt heat storage and release module comprises a high-temperature heat storage tank, a low-temperature heat storage tank, a molten salt circulating pump, a molten salt make-up pump, a molten salt heater and a molten salt cooler. Through the collaborative design of the multi-source heat source module, the molten salt heat storage and release module, the steam power generation module, the graded heat supply module, the multi-medium heat exchange module and the intelligent regulation and control module, the thermoelectric coupling rigidity is broken through, and the load regulation flexibility is remarkably improved.

An organic working medium and steam combined geothermal power generation system comprises a steam power generation system, and the steam power generation system comprises an evaporator, a steam turbine, a mixed condenser and a first recharge pump which are connected in sequence; comprising an organic working medium power generation system, the organic working medium power generation system comprises an organic working medium evaporator, an organic working medium turbine, a surface type condenser and an organic working medium pump which are sequentially connected, the steam power generation system and the organic working medium power generation system are communicated through a valve, and the steam power generation system takes water from a geothermal exploitation well. Compared with the prior art, by means of gradient utilization of high-temperature geothermal water, geothermal resources are utilized to the maximum extent, the power generation capacity per ton of water is improved, and meanwhile the power generation efficiency and the power generation capacity of the system are improved.

The invention relates to a combined heat and power supply system, a combined heat and power supply control method and device and computer equipment, the system comprises a fuel cell power generation subsystem and a waste heat boiler which are connected, and a steam power generation heat supply subsystem and a heat storage subsystem which are connected with the waste heat boiler, the waste heat boiler heats water through smoke and inputs generated steam into a steam turbine of the steam power generation and heat supply subsystem, the steam turbine uses part of the steam for driving a power generator to supply power and pumps part of the steam into a heat supply network heater to supply heat, and the waste heat boiler further heats a heat storage medium conveyed by a first heat storage device through the smoke. And the heated heat storage medium is input into the second heat storage device, and the second heat storage device conveys the heated heat storage medium into the supplementary heating network heater for heat supply. By the adoption of the system, the thermal load requirement can be better met.

The present application discloses a waste heat recovery device, which relates to the field of boiler steam power generation, and includes: a condenser, which has a steam inlet and a condensate discharge pipe; a steam pipe, whose first end is connected to the steam inlet and whose second end is used to connect to the steam turbine; a return pipe, whose first end is connected to the condensate discharge pipe and whose second end is used to connect to the water inlet pipe of the boiler; a heat exchange pipe, whose first end is connected to the condensate discharge pipe and whose second end is connected to the return pipe after passing through the steam pipe, and the heat exchange pipe has a heat exchange section located inside the steam pipe; a flow control structure is provided at the joint between the heat exchange pipe and the condensate discharge pipe, and the flow control structure includes: a stopper, which is fixed on the side wall of the heat exchange pipe; a rotating baffle, whose one end is rotatably arranged on the stopper or the side wall of the heat exchange pipe, and the rotating baffle has an initial state and a top open state. The present application can effectively utilize the steam tail gas of the steam turbine and reasonably heat the condensate.