A thermal efficiency device and control method for a coal-fired thermal power generator set

Abstract

The invention discloses a thermal efficiency device and control method for a coal-fired thermal power generator set, which includes a combustion furnace, a gas turbine and a compressor; the input end of the combustion furnace is connected to the compressor, and the output end is connected to the gas turbine through a perforated plate group; the output end of the gas turbine is connected to the first input end of the waste heat boiler; the second input end of the waste heat boiler is connected to the output end of the feed water pump; the output end of the waste heat boiler is connected to the input end of the steam turbine; the output end of the steam turbine is connected to the input end of the feed water pump; the gas turbine and the steam turbine are both connected to the generator; and a plurality of porous refractory bricks are attached to the inner wall of the combustion furnace. The technical problem that the overall combustion efficiency of the existing system is improved by less than 5% is solved. The invention reduces the temperature of the water vapor after passing through, increases the speed, and increases the proportion of directional kinetic energy by adding a perforated plate group between the combustion furnace and the gas turbine, thereby facilitating the work of water vapor and improving the thermal efficiency of the generator set.

Description

Technical Field

[0001] The invention relates to the technical field of coal-fired thermal power generators, and in particular to a thermal efficiency device and a control method for a coal-fired thermal power generator set. Background Art

[0002] At present, the global economic growth has led to a rapid increase in the demand for fossil energy, which is followed by a large amount of greenhouse gas emissions, especially CO2. The intensification of the greenhouse effect will inevitably lead to global warming, which will greatly affect human survival and development. It is urgent to effectively control greenhouse gas emissions and respond to global climate change. However, coal-fired power plants, also known as thermal power plants, are factories that use coal as fuel to produce electricity and use a large amount of primary energy. Therefore, energy conservation in thermal power plants is of great significance to energy conservation, and effectively improving the thermal efficiency of thermal power plants means improving the efficiency of energy use.

[0003] Therefore, the existing coal-fired power generating units improve their thermal efficiency by adding a first-stage adjustable heat recovery extraction steam heater and a high-pressure steam cooler, and by increasing the boiler feed water temperature, thereby improving the heat recovery economy of the unit. The turbine flow area is optimized by the input and removal of the added first-stage adjustable heat recovery extraction steam, and the steam intake volume of the THA condition and the TRL condition are both VWO conditions, eliminating the valve throttling loss and the partial steam intake loss of the regulating stage under the THA condition under the original design conditions, and reducing the boiler margin loss caused by conventional flow efficiency improvement without capacity increase. On the basis of improving the heat recovery economy of the unit, the efficiency of the high-pressure cylinder is improved by about 2 percentage points. However, the system has a complex structure and needs to add a large number of auxiliary combustion equipment, and the overall combustion efficiency is improved by less than 5%, which has great limitations. Summary of the invention

[0004] The present invention provides a thermal efficiency device and control method for a coal-fired thermal power generation unit, which solves the technical problems that the existing system has a complex structure, needs to add a large number of auxiliary combustion equipment, and the overall combustion efficiency is improved by less than 5%, which has great limitations.

[0005] A first aspect of the present invention provides a thermal efficiency device for a coal-fired thermal power generator set, the device comprising a combustion furnace, a gas turbine and a compressor;

[0006] The input end of the combustion furnace is connected to the compressor, and the output end is connected to the gas turbine through a perforated plate group;

[0007] The output end of the gas turbine is connected to the first input end of the waste heat boiler;

[0008] The second input end of the waste heat boiler is connected to the output end of the feed water pump;

[0009] The output end of the waste heat boiler is connected to the input end of the steam turbine;

[0010] The output end of the steam turbine is connected to the input end of the feed water pump;

[0011] The gas turbine and the steam turbine are both connected to a generator;

[0012] A plurality of porous refractory bricks are attached to the inner wall of the combustion furnace.

[0013] Optionally, each of the porous refractory bricks has a plurality of interconnected channels formed inside;

[0014] The pores penetrate through the upper and lower surfaces of the porous refractory bricks.

[0015] Optionally, the materials for preparing the porous refractory bricks include alumina cement, alumina aggregate and solid combustion aid;

[0016] The weight ratio of the alumina cement, the alumina aggregate and the solid combustion aid is 1:5:2.

[0017] Optionally, the gas turbine includes a steam turbine high-pressure cylinder and a steam turbine intermediate-pressure cylinder;

[0018] A reheater is provided at the connection between the high-pressure cylinder of the steam turbine and the intermediate-pressure cylinder of the steam turbine.

[0019] Optionally, the perforated plate group includes multiple groups of perforated plates;

[0020] A plurality of groups of punching plates are arranged in parallel.

[0021] Optionally, a plurality of through holes are arranged on the punching plate at equal intervals;

[0022] The diameter of the through hole is 10 cm to 15 cm.

[0023] Optionally, a heater is provided between the feed water pump and the waste heat boiler;

[0024] A superheater is provided between the waste heat boiler and the steam turbine.

[0025] Optionally, a condenser is provided between the steam turbine and the feed water pump.

[0026] Optionally, a regulating valve is provided between the steam turbine and the generator.

[0027] A second aspect of the present invention provides a control method for a thermal efficiency device of any of the above-mentioned coal-fired thermal power generation units, comprising:

[0028] Air is introduced into the combustion furnace through a compressor, and combustibles are burned through the combustion furnace and porous refractory bricks to generate steam;

[0029] The steam is converted into directional kinetic energy through a perforated plate group and output to a gas turbine, and the directional kinetic energy is converted into electrical energy through the gas turbine for a first generator to generate electricity;

[0030] Obtaining the residual heat energy corresponding to the gas turbine and outputting it to the waste heat boiler and the steam turbine in sequence;

[0031] The residual heat energy is converted into electrical energy by the steam turbine and supplied to the second generator for generating electricity.

[0032] It can be seen from the above technical solutions that the present invention has the following advantages:

[0033] 1. The present invention adds a perforated plate group between the combustion furnace and the gas turbine, so that the temperature of the water vapor after passing through is reduced, the speed is increased, and the proportion of directional kinetic energy is increased, which is beneficial to the work of water vapor and can improve the thermal efficiency of the generator set.

[0034] 2. The present invention adds porous refractory bricks in the combustion furnace to perform secondary combustion on the incompletely burned combustibles, making the combustion more complete. At the same time, the porous refractory bricks can be used to supplement oxygen into the combustion furnace to optimize the internal combustion, reduce heat loss, further improve thermal efficiency, and better meet production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0036] Figure 1 A schematic diagram of the structure of a thermal efficiency device for a coal-fired thermal power generator set provided in Embodiment 1 of the present invention;

[0037] Figure 2 A schematic diagram of a waste heat recovery structure provided by the third embodiment of the present invention;

[0038] Figure 3 A schematic diagram of the structure of a perforated plate assembly provided in Embodiment 3 of the present invention;

[0039] Figure 4 A flow chart of the steps of a control method for a thermal efficiency device of a coal-fired thermal power generating set provided in Embodiment 4 of the present invention.

[0040] The meanings of the reference numerals are as follows:

[0041] 1. Combustion furnace; 2. Steam turbine; 3. Compressor; 4. Waste heat boiler; 5. Feed water pump; 6. Steam turbine; 7. Generator; 8. Perforated plate group; 9. Heater; 10. Superheater; 11. Condenser; 12. Control valve; 13. Refractory bricks. DETAILED DESCRIPTION

[0042] The embodiment of the present invention provides a thermal efficiency device and control method for a coal-fired thermal power generation unit, which is used to solve the technical problems that the existing system structure is complex, a large number of auxiliary combustion equipment need to be added, and the overall combustion efficiency is improved by less than 5%, which has great limitations.

[0043] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Embodiment 1

[0045] See also Figure 1 , Figure 1 This is a schematic structural diagram of a thermal efficiency device for a coal-fired thermal power generator set provided in Example 1 of the present invention.

[0046] The present invention provides a thermal efficiency device for a coal-fired thermal power generator set, which includes a combustion furnace 1, a gas turbine 2 and a compressor 3; the input end of the combustion furnace 1 is connected to the compressor 3, and the output end is connected to the gas turbine 2 through a perforated plate group 8; the output end of the gas turbine 2 is connected to the first input end of the waste heat boiler 4; the second input end of the waste heat boiler 4 is connected to the output end of the feed water pump 5; the output end of the waste heat boiler 4 is connected to the input end of the steam turbine 6; the output end of the steam turbine 6 is connected to the input end of the feed water pump 5; the gas turbine 2 and the steam turbine 6 are both connected to a generator 7; a plurality of porous refractory bricks 13 are attached to the inner wall of the combustion furnace 1.

[0047] It should be noted that, see Figure 1It can be seen that the compressor 3 introduces air into the combustion furnace 1, so that the combustion furnace 1 burns combustibles and generates steam, and porous refractory bricks 13 are added in the combustion furnace 1 to facilitate secondary combustion of incompletely burned combustibles, so that the combustion is more complete. The generated steam is transported to the perforated plate group 8 through the output end of the combustion furnace 1. When passing through the perforated plate group 8, the steam temperature decreases and the speed increases to form directional kinetic energy. The proportion of the directional kinetic energy increases, which is conducive to driving the gas turbine 2 to rotate and generate electrical energy, which can be used for the generator 7 to generate electricity. The remaining waste heat of the gas turbine 2 will enter the waste heat boiler 4 for waste heat recovery, and the waste heat will be transported to the steam turbine 6, and the waste heat will be converted into electrical energy through the steam turbine 6 for another generator 7 to generate electricity.

[0048] The steam generated by the steam turbine 6 can also be delivered to the feed water pump 5, and the steam is delivered to the waste heat boiler 4 through the feed water pump 5, forming a closed loop, thereby improving the utilization rate of combustibles and thus improving the thermal efficiency of the generator set by about 4.1%-6.5%.

[0049] Specifically, 1. The present invention adds a perforated plate group 8 between the combustion furnace 1 and the gas turbine 2, so that the temperature of the steam after passing through is reduced, the speed is increased, and the proportion of directional kinetic energy is increased, which is beneficial to the work of water vapor and can improve the thermal efficiency of the generator set.

[0050] 2. The present invention adds porous refractory bricks 13 in the combustion furnace 1 to perform secondary combustion on the incompletely burned combustibles to make the combustion more complete. At the same time, the porous refractory bricks 13 can be used to supplement oxygen into the combustion furnace 1 to optimize the internal combustion, reduce heat loss, further improve thermal efficiency, and better meet production needs.

[0051] Embodiment 2

[0052] See also Figure 1-3 , Figure 1 This is a schematic structural diagram of a thermal efficiency device for a coal-fired thermal power generating set provided in Embodiment 2 of the present invention.

[0053] The present invention provides a thermal efficiency device for a coal-fired thermal power generation unit, wherein a plurality of mutually connected channels are provided inside each porous refractory brick 13; the channels penetrate the upper surface and the lower surface of the porous refractory brick 13. The materials for preparing the porous refractory brick 13 include alumina cement, alumina aggregate and a solid combustion aid; the weight ratio of alumina cement, alumina aggregate and the solid combustion aid is 1:5:2.

[0054] It should be noted that the porous refractory bricks 13 are provided with a plurality of interconnected channels, which are transverse channels and vertical channels. The transverse channels penetrate the upper and lower surfaces of the porous refractory bricks 13, and the vertical channels also penetrate the upper and lower surfaces of the porous refractory bricks 13.

[0055] Specifically, the porous refractory brick 13 is prepared from alumina cement, alumina aggregate and solid combustion aid in a weight ratio, wherein the weight ratios of alumina cement, alumina aggregate and solid combustion aid are 1:5:2 respectively; the solid combustion aid releases a large amount of heat energy during the combustion process, which can increase the combustion temperature. High-temperature combustion is conducive to the complete combustion of combustibles and the proceeding of the reaction, thereby improving the combustion effect.

[0056] In the specific implementation, the combustion chamber formed in the porous refractory bricks 13 is used to perform secondary combustion on the incompletely burned combustibles to make the combustion more complete. At the same time, the porous refractory bricks 13 can be used to supplement oxygen into the combustion furnace 1. The oxidant in the solid combustion aid can provide additional oxygen to promote the combustion reaction and optimize the internal combustion. The oxygen in the porous refractory bricks can also cause the wind direction of the main ventilation duct of the combustion furnace 1 to form turbulence, thereby extending the residence time of the fuel gas in the combustion furnace 1 and enhancing the heat radiation, which is conducive to complete combustion and improves thermal efficiency.

[0057] Embodiment 3

[0058] See also Figure 1-3 , Figure 1 This is a schematic structural diagram of a thermal efficiency device for a coal-fired thermal power generating set provided in Example 3 of the present invention.

[0059] The present invention provides a thermal efficiency device for a coal-fired thermal power generator set, wherein the gas turbine 2 includes a turbine high-pressure cylinder and a turbine intermediate-pressure cylinder; a reheater is provided at the connection between the turbine high-pressure cylinder and the turbine intermediate-pressure cylinder. The perforated plate group 8 includes multiple groups of perforated plates; the multiple groups of perforated plates are arranged in parallel. Multiple through holes are evenly spaced on the perforated plates; the diameter of the through holes is 10 cm to 15 cm. A heater 9 is provided between the feedwater pump 5 and the waste heat boiler 4; a superheater 10 is provided between the waste heat boiler 4 and the steam turbine 6. A condenser 11 is provided between the steam turbine 6 and the feedwater pump 5. A regulating valve 12 is provided between the steam turbine 6 and the generator 7.

[0060] It should be noted that, see Figure 2 It can be seen that the steam passing through the perforated plate group 8 enters the high-pressure cylinder of the steam turbine 2, and the steam is expanded and worked by the high-pressure pump of the steam turbine to obtain the steam that has expanded and worked. At this time, the temperature and pressure of the steam are reduced, and its pressure is generally 18-22% of the main steam pressure. All the steam that has expanded and worked is drawn out from the steam turbine 2 and transported to the reheater for reheating, specifically heated to the same level of temperature as the new steam, and then drawn back from the reheater to the steam turbine intermediate pressure cylinder of the steam turbine 2 to continue to expand and work, thereby improving the combustion efficiency. Among them, the use of the reheater for intermediate reheating can have the same effect as increasing the inlet steam temperature, and can also reduce the humidity of the exhaust steam.

[0061] It should be noted that, see Figure 3 It can be seen that when passing through the combustion furnace 1, the combustion process continuously heats the enclosed water vapor, and when its pressure reaches a certain value, the water vapor passes through the perforated plate group 8. Because the perforated plate group 8 is composed of multiple groups of perforated plates 8, the temperature of the water vapor is reduced when passing through the multiple groups of perforated plates, and the perforated plates have many through holes and large diameters, so that the flow rate of the water vapor increases when passing through the perforated plates, and multiple throttlings are performed, thereby greatly reducing its temperature, which is beneficial to increase the proportion of directional kinetic energy, thereby facilitating the water vapor to do work, while keeping the kinetic energy of the water vapor after throttling roughly equal to the current situation, and then controlling the firepower to balance the energy supplied to the water vapor by combustion and the directional kinetic energy of the water vapor after throttling.

[0062] It should be noted that, see Figure 3 It can be seen that a heater 9 is provided between the feed water pump 5 and the waste heat boiler 4, and the heater 9 can heat the water vapor output by the feed water pump 5 so that the temperature of the water vapor reaches the same level as the temperature of the new steam. Specifically, the heater 9 and the reheater have the same effect, so that the water vapor reheating can achieve the same effect as the temperature output from the gas turbine 2, and can also reduce the humidity of the exhaust steam.

[0063] It should be noted that, see Figure 3 It can be seen that a superheater 10 is provided between the waste heat boiler 4 and the steam turbine 6 to superheat the water vapor output by the steam turbine 6 so that the temperature of the water vapor input by the steam turbine 6 into the waste heat boiler 4 must reach a certain temperature, and the water vapor output by the steam turbine 6 and the water vapor output by the feed water pump 5 are kept the same after the heating treatment, so as to avoid a large difference in the temperature of the water vapor output from the gas turbine 2 and the feed water pump 5 respectively, which will cause a large difference in the temperature of the water vapor received by the waste heat boiler 4 and cause losses.

[0064] It should be noted that, see Figure 3 It can be seen that a condenser 11 is arranged between the steam turbine 6 and the feed water pump 5. The condenser 11 recovers the heat energy in the steam or gas during the condensation process. By recovering the heat energy, the condenser 11 can improve the energy utilization efficiency, reduce energy consumption and cost. At the same time, in the condenser 11, there may be various impurities in the steam or gas, such as solid particles, droplets or other impure substances. During the condensation process, these impurities will be separated from the liquid and accumulated in the condenser 11, which helps to purify the steam or gas, prevent impurities from entering downstream equipment or systems, and protect the normal operation of the equipment.

[0065] It should be noted that, see Figure 3It can be seen that a regulating valve 12 is provided between the steam turbine 6 and the generator 7. The regulating valve 12 can adjust the flow rate of steam by changing the cross-sectional area of ​​the passage. The load demand of the generator 7 will change continuously, and the steam flow rate generated by the steam turbine 6 needs to be adjusted accordingly to meet the load requirements. The regulating valve 12 controls the flow rate of steam to ensure that the generator 7 can obtain the required amount of steam. At the same time, the regulating valve 12 can also play a role in balancing the pressure in the system. It can automatically adjust the opening according to the pressure changes of the system to maintain a stable pressure level. This helps to prevent the system pressure from being too high or too low and maintain the safe working state of the system.

[0066] In specific implementation, the waste heat recovery is composed of a feed water pump 5, a waste heat boiler 4, a heater 9 and a steam turbine 6, which recovers the excess heat during the main combustion, and performs secondary heating to heat the water in the feed water pump 5 to generate steam, and then drives the steam turbine 6 to rotate for secondary power generation, thereby indirectly improving the combustion efficiency, reducing heat loss by at least 0.77%-2.45%, and improving thermal efficiency by 2.7%-4.4%.

[0067] Embodiment 4

[0068] See also Figure 4 , Figure 4 A flowchart of the steps of a control method for a thermal efficiency device of a coal-fired thermal power generator set applied to any of the above embodiments is provided in Embodiment 4 of the present invention.

[0069] The present invention provides a control method for a thermal efficiency device of a coal-fired power generation unit applied to any of the above embodiments, comprising the following steps:

[0070] Step 101, introducing air into the combustion furnace 1 through the compressor 3, and burning combustibles through the combustion furnace 1 and the porous refractory bricks 13 to generate steam;

[0071] Step 102: convert the steam into directional kinetic energy through the perforated plate group 8 and output it to the gas turbine 2, and convert the directional kinetic energy into electrical energy through the gas turbine 2 for the first generator to generate electricity;

[0072] Step 103, obtaining the residual heat energy corresponding to the gas turbine 2, and outputting it to the waste heat boiler 4 and the steam turbine 6 in sequence;

[0073] Step 104: convert the remaining heat energy into electrical energy through the steam turbine 6 for the second generator to generate electricity.

[0074] It should be noted that the first generator and the second generator may be the same generator 7 , or may be divided into two different generators 7 .

[0075] In the specific implementation, the compressor 3 introduces air into the combustion furnace 1, so that the combustion furnace 1 burns combustibles and generates steam, and porous refractory bricks 13 are added in the combustion furnace 1 to facilitate secondary combustion of incompletely burned combustibles, so that the combustion is more complete, and the generated steam is transported to the perforated plate group 8 through the output end of the combustion furnace 1. When passing through the perforated plate group 8, the steam temperature decreases and the speed increases to form directional kinetic energy. The proportion of the directional kinetic energy increases, which is conducive to driving the gas turbine 2 to rotate and generate electrical energy, which can be used for the generator 7 to generate electricity. And the remaining waste heat of the gas turbine 2 will enter the waste heat boiler 4 for waste heat recovery, and the waste heat will be transported to the steam turbine 6, and the waste heat will be converted into electrical energy through the steam turbine 6, which can be used for another generator 7 or the same generator 7 to generate electricity.

[0076] The steam generated by the steam turbine 6 can also be transported to the feed water pump 5, and the steam is transported to the waste heat boiler 4 through the feed water pump 5. The waste heat recovery system composed of the feed water pump 5, the waste heat boiler 4, the heater 9 and the steam turbine 6 recovers the excess heat during the main combustion, and performs secondary heating to heat the water in the feed water pump 5 to generate steam, which then drives the steam turbine 6 to rotate for secondary power generation, thereby indirectly improving the combustion efficiency.

[0077] Specifically, 1. The present invention adds a perforated plate group 8 between the combustion furnace 1 and the gas turbine 2, so that the temperature of the steam after passing through is reduced, the speed is increased, and the proportion of directional kinetic energy is increased, which is beneficial to the work of water vapor and can improve the thermal efficiency of the generator set.

[0078] 2. The present invention adds porous refractory bricks 13 in the combustion furnace 1 to perform secondary combustion on the incompletely burned combustibles to make the combustion more complete. At the same time, the porous refractory bricks 13 can be used to supplement oxygen into the combustion furnace 1 to optimize the internal combustion, reduce heat loss, further improve thermal efficiency, and better meet production needs.

[0079] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0080] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thermal efficiency device for a coal-fired thermal power generating unit, characterized in that: The device includes a combustion furnace, a gas turbine and a compressor; The input end of the combustion furnace is connected to the compressor, and the output end is connected to the gas turbine through a perforated plate group; The output end of the gas turbine is connected to the first input end of the waste heat boiler; The second input end of the waste heat boiler is connected to the output end of the feed water pump; The output end of the waste heat boiler is connected to the input end of the steam turbine; The output end of the steam turbine is connected to the input end of the feed water pump; The gas turbine and the steam turbine are both connected to a generator; A plurality of porous refractory bricks are attached to the inner wall of the combustion furnace; Each of the porous refractory bricks has a plurality of interconnected channels formed inside; The pores penetrate the upper and lower surfaces of the porous refractory bricks; The gas turbine comprises a steam turbine high pressure cylinder and a steam turbine intermediate pressure cylinder; A reheater is provided at the connection between the high-pressure cylinder of the steam turbine and the intermediate-pressure cylinder of the steam turbine.

2. The thermal efficiency device of a coal-fired power generation unit according to claim 1, characterized in that: The materials for preparing the porous refractory bricks include alumina cement, alumina aggregate and solid combustion aid; The weight ratio of the alumina cement, the alumina aggregate and the solid combustion aid is 1:5:

2.

3. The thermal efficiency device of a coal-fired power generation unit according to claim 1, characterized in that: The perforated plate group includes a plurality of perforated plates; A plurality of groups of punching plates are arranged in parallel.

4. The thermal efficiency device of a coal-fired power generation unit according to claim 3, characterized in that: The punching plate is provided with a plurality of through holes at equal intervals; The diameter of the through hole is 10 cm to 15 cm.

5. The thermal efficiency device of a coal-fired power generation unit according to claim 1, characterized in that: A heater is provided between the feed water pump and the waste heat boiler; A superheater is provided between the waste heat boiler and the steam turbine.

6. The thermal efficiency device of a coal-fired power generation unit according to claim 1, characterized in that: A condenser is arranged between the steam turbine and the feed water pump.

7. The thermal efficiency device of a coal-fired power generation unit according to claim 1, characterized in that: A regulating valve is provided between the steam turbine and the generator.

8. A control method for a thermal efficiency device of a coal-fired power generation unit according to any one of claims 1 to 7, characterized in that: include: Air is introduced into the combustion furnace through a compressor, and combustibles are burned through the combustion furnace and porous refractory bricks to generate steam; The steam is converted into directional kinetic energy through a perforated plate group and output to a gas turbine, and the directional kinetic energy is converted into electrical energy through the gas turbine for a first generator to generate electricity; Obtaining the residual heat energy corresponding to the gas turbine and outputting it to the waste heat boiler and the steam turbine in sequence; The residual heat energy is converted into electrical energy by the steam turbine and supplied to the second generator for generating electricity.

Images