A supercritical carbon dioxide cycle power generation apparatus integrated with a coal-fired boiler

Abstract

The application relates to the technical field of circulating power generation, in particular to a supercritical carbon dioxide circulating power generation equipment integrated with a coal-fired boiler, which comprises a power generation equipment main body, a first heat exchanger is fixedly arranged in the interior of the power generation equipment main body, a reactor is fixedly arranged on one side of the first heat exchanger, a preheater is fixedly arranged in the interior of the power generation equipment main body, a pump is fixedly arranged in the interior of the power generation equipment main body, the pump is connected with the first heat exchanger through a pipeline, and a sealing assembly matched with a preheating pipeline is arranged in the interior of the power generation equipment main body. When the steam temperature after twice heat exchange is higher than a set value, the steam with the temperature higher than the set value enters the preheater, the air and the natural gas to be combusted are preheated, the steam with the temperature higher than the set value can be better utilized, the waste of steam heat can be reduced, and the heat utilization rate is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cycle power generation, in particular to a supercritical carbon dioxide cycle power generation equipment integrated with a coal-fired boiler. BACKGROUND

[0002] Ordinary cycle power generation equipment currently uses gas turbines and steam turbines to generate power, and no combination of the two for combined cycle power generation has been found. Using gas turbines or steam turbines alone to generate power has low efficiency, and the medium containing heat after the operation of the gas turbines or steam turbines is directly discharged, causing waste of resources.

[0003] A supercritical carbon dioxide cycle power generation equipment integrated with a coal-fired boiler directly condenses the steam after two heat exchanges, which causes waste of heat and reduces the heat utilization rate of the equipment when the temperature of the steam after two heat exchanges is still high.

[0004] Therefore, a supercritical carbon dioxide cycle power generation equipment integrated with a coal-fired boiler is provided. SUMMARY

[0005] The present application aims to provide a supercritical carbon dioxide cycle power generation equipment integrated with a coal-fired boiler, which solves the problem in the background art by allowing steam with a temperature higher than a set value to enter a preheater when the temperature after two heat exchanges is still high, thereby preheating the air and natural gas to be burned.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The utility model provides an integrated supercritical carbon dioxide cycle power generation equipment of coal -fired boiler, including power generation equipment main part, the inside fixed mounting of power generation equipment main part has first heat exchanger, one side fixed mounting of first heat exchanger has reactor, the side away from first heat exchanger of reactor fixed mounting has gas inlet, and gas inlet extends to the outside of power generation equipment main part, the other side fixed mounting of first heat exchanger has flue gas pipe, the lower end fixed mounting of first heat exchanger near flue gas pipe side has steam turbine, the inside fixed mounting of power generation equipment main part has second heat exchanger, and second heat exchanger is connected through pipeline between steam turbine, the inside fixed mounting of power generation equipment main part has preheater, and preheater is located gas inlet, and second heat exchanger and preheater are connected through preheating pipeline, the inside fixed mounting of power generation equipment main part has condenser, and condenser and preheater are connected through condensing pipeline, the inside fixed mounting of power generation equipment main part has pump, and pump and condenser are connected through pipeline, pump and first heat exchanger are connected through pipeline, and the pipeline passes through the inside of second heat exchanger, the inside installation of power generation equipment main part has sealing assembly with preheating pipeline cooperation.

[0008] Sealing assembly: when the temperature of steam reaches the set value, the sealing assembly will open the pipeline to the preheater.

[0009] When the equipment works, the outside air and natural gas are sucked into the reactor through the gas inlet, then combustion is carried out in the reactor, steam is generated through the first heat exchanger, flue gas is discharged through the flue gas pipe, high-temperature steam enters the steam turbine to generate electricity, then enters the second heat exchanger to preheat the water inside, when the steam comes out of the second heat exchanger, it is transferred to the preheater through the preheating pipeline, then the gas and natural gas inside the preheater are preheated, and then the steam is converted into liquid in the condenser through the condensing pipeline, the liquid is preheated by the second heat exchanger and then transferred to the first heat exchanger by the pump, so that the steam containing heat can be further utilized, the heat utilization rate can be increased, and the air and natural gas can be preheated to the optimal combustion temperature.

[0010] Preferably, the power generation equipment body is internally provided with a power supply, the sealing assembly comprises a first sealing cavity formed in the power generation equipment body, a first electromagnet is fixedly installed in the first sealing cavity, the first electromagnet is electrically connected to the power supply, a first piston is movably installed on the side of the first sealing cavity away from the first electromagnet, a first iron sheet is fixedly installed on the first piston close to the first electromagnet, a first sealing plate is fixedly installed on the side of the first piston away from the first electromagnet and extends into the preheating pipeline, springs are fixedly installed between the first piston and the inner wall of the first sealing cavity, the power generation equipment body is internally provided with a sealing assembly, and the power generation equipment body is internally provided with an opening and closing mechanism for controlling the opening and closing of the first electromagnet.

[0011] When the first electromagnet is powered on, the first iron sheet is attracted to move towards the first electromagnet, the movement of the first iron sheet drives the first piston and the first sealing plate to move, the sealing of the preheating pipeline is then opened, the steam in the preheating pipeline enters the preheater, because the springs are fixedly installed between the first piston and the inner wall of the first sealing cavity, when the first electromagnet is powered off, the first piston moves away from the first electromagnet, the preheating pipeline is then resealed, and the steam in the preheating pipeline is prevented from entering the preheater, so that when the steam temperature out of the second heat exchanger is high, the steam can be further utilized, and the utilization rate of steam heat can be improved.

[0012] Preferably, the sealing assembly comprises a second sealing cavity formed in the power generation equipment body, a second piston is movably installed in the second sealing cavity, a second sealing plate is fixedly installed on one side of the second piston, and the second sealing cavity and the first sealing cavity are connected through an air pipe.

[0013] When the first piston moves towards the first electromagnet, the gas in the first sealed cavity enters the second sealed cavity through the air pipe, and the gas in the second sealed cavity increases, which pushes the second piston to move towards the second sealing plate, and the movement of the second piston pushes the second sealing plate to move away from the second piston, thereby sealing the communication pipe of the preheating pipe and the condensing pipe to prevent high-temperature steam from directly entering the condensing pipe. When the first piston moves away from the first electromagnet, the gas in the second sealed cavity returns to the first sealed cavity through the air pipe, and the gas in the second sealed cavity decreases, so that the second piston moves away from the second sealing plate, and the second sealing plate moves, and the end of the second sealing plate opens the communication pipe of the preheating pipe and the condensing pipe, so that the steam in the preheating pipe directly enters the condensing pipe. In this way, the high-temperature steam can preheat the air and natural gas in the preheater, and the low-temperature steam can enter the condensing machine through the condensing pipe for condensation, thereby improving the utilization rate of steam temperature.

[0014] Preferably, the opening and closing mechanism comprises a connecting shell fixedly installed inside the preheating pipe and located close to the preheater, a first insulating plate movably installed inside the connecting shell, a first conductive plate fixedly installed inside the first insulating plate, two first electrically connected plates fixedly installed inside the connecting shell and matched with the first conductive plate, and two first electrically connected plates respectively electrically connected to the power supply and the first electromagnet, springs fixedly installed between the first insulating plate and the inner wall of the connecting shell, a one-way valve fixedly installed at one end of the preheating pipe close to the preheater, and a detection assembly fixedly installed inside the preheating pipe and used to control the movement of the first insulating plate.

[0015] When the first insulating plate is pushed to move towards the first electrically connected plate, the circuit of the two first electrically connected plates is connected through the first conductive plate, and the first electromagnet is enabled to work. When the first insulating plate loses the pushing force, the first insulating plate moves away from the first electrically connected plate due to the springs fixedly installed between the first insulating plate and the inner wall of the connecting shell, the connection between the two first electrically connected plates is disconnected, and the first electromagnet is disabled to work. The one-way valve can prevent the steam in the preheater from flowing back to the preheating pipe, so that the steam entering the preheater or the condensing pipe can be controlled in time, and the steam higher than the set value can be better utilized.

[0016] Preferably, the detection assembly comprises a detection groove opened in the inside of the preheating pipeline, alcohol is placed in the inside of the detection groove, a piston push plate is movably installed on one side of the alcohol, a push rod is fixedly installed on the side of the piston push plate away from the piston push plate, and the push rod extends into the connecting shell and is fixedly connected with the first insulating plate.

[0017] When the temperature of the steam reaching the detection groove is high, the alcohol expands greatly and pushes the piston push plate to move away from the alcohol, when the temperature of the steam reaching the detection groove is low, the alcohol shrinks and pushes the first insulating plate to move away from the first electric plate, and the push rod is used to push the piston push plate to move, so that whether the temperature of the steam is suitable for preheating of air and natural gas can be detected in time, and the temperature of the steam can be better utilized.

[0018] Preferably, the bottom end of the preheater is provided with a downspout, a sealing groove is opened in the inside of the preheater, an electrified spring is fixedly installed in the inside of the sealing groove, the electrified spring is electrically connected to the power supply, a first push plate is fixedly installed on one side of the electrified spring, a third sealing plate is fixedly installed on the side of the first push plate away from the electrified spring, the third sealing plate extends into the downspout, and a time delay mechanism for controlling the electrified spring is fixedly installed in the inside of the preheater.

[0019] When the electrified spring is electrified, the electrified spring shrinks and pulls the first push plate to move towards the electrified spring, the movement of the first push plate drives the third sealing plate to move, when the third sealing plate moves towards the electrified spring, the sealing of the downspout is opened, when the electrified spring is disconnected from the power supply, the electrified spring extends and pushes the first push plate to move away from the electrified spring, the movement of the first push plate drives the third sealing plate to move and seals the downspout, so that the steam in the inside of the preheater cannot enter the first heat exchanger through the downspout, and when the water in the inside of the preheater reaches a set value, the water in the inside of the preheater enters the first heat exchanger, so that the circulation power generation can be better performed.

[0020] Preferably, the time delay mechanism comprises a time delay shell fixedly installed in the inside of the preheater, a second electromagnet is fixedly installed in the inside of the time delay shell, a lifting plate is movably installed at the end of the time delay shell away from the second electromagnet, a third iron sheet is fixedly installed on the side of the lifting plate close to the second electromagnet, a third electrically conductive plate is fixedly installed in the inside of the lifting plate, two third electric plates are fixedly installed in the inside of the time delay shell and matched with the third electrically conductive plate, the two third electric plates are electrically connected to the power supply and the electrified spring respectively, and a control assembly for controlling the work of the second electromagnet is fixedly installed in the inside of the preheater.

[0021] When the second electromagnet is powered, it will attract the third iron sheet to move towards the second electromagnet, the movement of the third iron sheet can drive the lifting plate to move, and then the third conductive plate inside the lifting plate is connected to the circuit of the two third electric plates, and the connection of the two third electric plate circuits will make the power spring work. When the second electromagnet stops working, the lifting plate will slowly fall down, and then the time of the two third electric plates is prolonged, so that the water outlet seal can be prevented when the water in the preheater is not completely drained.

[0022] Preferably, the lower end of the water outlet is fixedly installed with a downpipe, the inner wall of the water outlet is symmetrically installed with two guide rods, and the two guide rods are commonly slidably installed with a water floating plate. The two sides of the water floating plate are symmetrically installed with two magnets, and the side of the downpipe close to the first heat exchanger is fixedly installed with a one-way valve.

[0023] When the water in the preheater is too much, the water floating plate will move upwards along the guide rod, and when the water floating plate moves to the set position, the power spring will work, then the seal of the water outlet is opened, so that the water in the water outlet flows into the first heat exchanger through the pipeline. The one-way valve can prevent the water in the first heat exchanger from flowing back into the downpipe, and when the water in the water outlet is completely drained, the water floating plate will return to the bottom end of the water outlet, so that the water in the first heat exchanger can be prevented from entering the preheater, and the preheater can be better preheated.

[0024] Preferably, the control assembly comprises a trigger housing fixedly installed in the preheater, a second insulating plate movably installed in the trigger housing, a second conductive plate fixedly installed in the second insulating plate, two second electric plates fixedly installed in the trigger housing and matched with the second conductive plate, and the two second electric plates are respectively electrically connected to the second electromagnet and the power supply, and the second insulating plate is fixedly installed with a second iron sheet matched with the magnet.

[0025] When the water in the water outlet reaches the set value, the water floating plate will attract the second iron sheet to move towards the water floating plate, then drive the second insulating plate and the second conductive plate to move, and through the movement of the second insulating plate and the second conductive plate, the second conductive plate can connect the circuit of the two second electric plates, and then make the second electromagnet work. When the water in the water outlet is completely drained, the water floating plate will move downwards, and then the second insulating plate will move away from the water floating plate due to the spring fixedly installed between the second insulating plate and the trigger housing, so as to disconnect the circuit of the two second electric plates and make the second electromagnet stop working, so as to prevent the water outlet from being sealed when the water in the water outlet is not completely drained.

[0026] Preferably, the middle of the preheater is fixedly provided with a vertical plate, a plurality of through holes are formed in the bottom end of the vertical plate, the outlet of the preheating pipeline is higher than the through holes, and a one-way valve is fixedly arranged on the side of the condensing pipeline close to the preheater.

[0027] When water accumulates at a higher position in the preheater, the water can flow to a lower position through the through holes, so that the steam entering the preheater can be prevented from directly entering the condensing pipeline before heat exchange, and the one-way valve can prevent steam with a temperature lower than a set value from entering the preheater, so that the waste heat of the steam can be better utilized to preheat the air and natural gas to be combusted.

[0028] Compared with the prior art, the present application has the following beneficial effects:

[0029] 1. When the temperature of the steam after two heat exchanges is higher than a set value, the steam with a temperature higher than the set value can enter the preheater to preheat the air and natural gas to be combusted, so that the steam with a temperature higher than the set value can be better utilized, the waste of steam heat can be reduced, and the heat utilization rate can be improved.

[0030] 2. When the water in the preheater is higher than a set value, the seal of the water outlet is opened, and then the water flows into the first heat exchanger, so that the preheater can better preheat the air and natural gas, and the air and natural gas can be more fully combusted.

[0031] 3. When the water in the water outlet is lower than a set value, the energized spring is de-energized, but the energized spring is provided with a time delay mechanism, which can prolong the working time of the energized spring, so that the water in the water outlet can be dried, and the air and natural gas can be better preheated.

[0032] 4. When the temperature of the steam after two heat exchanges of the first conductive plate is higher than a set value, the preheating pipeline is opened, and then the steam enters the preheater, and when the steam after two heat exchanges is lower than a set value, the steam in the preheating pipeline directly enters the condensing pipeline, and then is directly condensed, so that the sealing and opening of the preheating pipeline can be timely controlled. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a front view of the present application;

[0034] Figure 2 It is a vertical plate of the present application;

[0035] Figure 3 It is a front view of the present application Figure 1 It is an enlarged view of A of the present application;

[0036] Figure 4An enlarged schematic view of B in the present application Figure 3 An enlarged schematic view of B in the present application

[0037] Figure 5 An enlarged schematic view of B in the present application Figure 1 An enlarged schematic view of B in the present application

[0038] Figure 6 An enlarged schematic view of B in the present application Figure 5 An enlarged schematic view of B in the present application

[0039] Figure 7 An enlarged schematic view of B in the present application Figure 1 An enlarged schematic view of B in the present application

[0040] In the figure: 1, power generation equipment main body; 2, reactor; 3, first heat exchanger; 4, flue gas pipe; 5, steam turbine; 6, second heat exchanger; 7, preheating pipe; 8, preheater; 9, condensing pipe; 10, condenser; 11, pump; 12, vertical plate; 13, gas inlet; 14, first sealing cavity; 15, first electromagnet; 16, first piston; 17, first iron sheet; 18, first sealing plate; 19, second sealing cavity; 20, second piston; 21, second sealing plate; 22, detection groove; 23, alcohol; 24, piston push plate; 25, push rod; 26, connecting shell; 27, first insulating plate; 28, first conductive plate; 29, first power connection plate; 30, downpipe; 31, guide rod; 32, water floating plate; 33, magnet; 34, sealing groove; 35, power spring; 36, first push plate; 37, third sealing plate; 38, trigger shell; 39, second insulating plate; 40, second conductive plate; 41, second iron sheet; 42, second power connection plate; 43, delay shell; 44, second electromagnet; 45, lifting plate; 46, third conductive plate; 47, third iron sheet; 48, third power connection plate; 49, through hole. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0042] Please refer to Figures 1 to 7 The present application provides a supercritical carbon dioxide cycle power generation equipment integrated with a coal-fired boiler, and the technical solutions are as follows:

[0043] The utility model provides an integrated supercritical carbon dioxide cycle power generation equipment of coal -fired boiler, including power generation equipment main part 1, the inside fixed mounting of power generation equipment main part 1 has first heat exchanger 3, the side fixed mounting of first heat exchanger 3 has reactor 2, the side fixed mounting of reactor 2 away from first heat exchanger 3 has gas inlet 13, and gas inlet 13 extends to the outside of power generation equipment main part 1, the other side fixed mounting of first heat exchanger 3 has flue gas pipe 4, the lower end fixed mounting of first heat exchanger 3 close to the side of flue gas pipe 4 has steam turbine 5, the inside fixed mounting of power generation equipment main part 1 has second heat exchanger 6, and second heat exchanger 6 is connected through pipeline between steam turbine 5, the inside fixed mounting of power generation equipment main part 1 has preheater 8, and preheater 8 is located on gas inlet 13, and second heat exchanger 6 is connected through preheating pipeline 7 between preheater 8, the inside fixed mounting of power generation equipment main part 1 has condenser 10, and condenser 10 is connected through condensing pipeline 9 between preheater 8, the inside fixed mounting of power generation equipment main part 1 has pump 11, and pump 11 is connected through pipeline between condenser 10, and pump 11 is connected through pipeline between first heat exchanger 3, and pipeline passes through the inside of second heat exchanger 6, and the inside installation of power generation equipment main part 1 has sealing assembly with preheating pipeline 7 cooperation.

[0044] Sealing assembly: when the temperature of steam reaches the set value, the sealing assembly will open the pipeline to the preheater 8.

[0045] When the device works, the outside air and natural gas will be sucked into the reactor 2 through the gas inlet 13, then burned in the reactor 2, steam is generated through the first heat exchanger 3, then the flue gas is discharged through the flue gas pipe 4, the high-temperature steam enters the steam turbine 5 to generate electricity, then enters the second heat exchanger 6 to preheat the water inside, when the steam comes out of the second heat exchanger 6, it is transferred to the preheater 8 through the preheating pipeline 7, then preheats the gas and natural gas inside the preheater 8, and then enters the condenser 10 through the condensing pipeline 9 to convert the steam into liquid, and then the liquid is preheated by the second heat exchanger 6 and transferred to the first heat exchanger 3 by the pump 11, which can further utilize the steam containing heat, increase the utilization rate of heat, and preheat the air and natural gas to the optimal combustion temperature.

[0046] As an embodiment of the utility model, refer to Figure 3The inside of the power generation equipment body 1 is internally provided with a power supply, the sealing assembly comprises a first sealing cavity 14 provided in the inside of the power generation equipment body 1, the first sealing cavity 14 is internally fixedly provided with a first electromagnet 15, the first electromagnet 15 is electrically connected to the power supply, the side of the first sealing cavity 14, away from the first electromagnet 15, is movably provided with a first piston 16, the first piston 16 is fixedly provided with a first iron sheet 17 close to the first electromagnet 15, the side of the first piston 16, away from the first electromagnet 15, is fixedly provided with a first sealing plate 18, and the first sealing plate 18 extends into the preheating pipeline 7, a spring is fixedly arranged between the first piston 16 and the inner wall of the first sealing cavity 14, the inside of the power generation equipment body 1 is fixedly provided with a sealing assembly, and the inside of the power generation equipment body 1 is fixedly provided with an opening and closing mechanism for controlling the opening and closing of the first electromagnet 15.

[0047] When the first electromagnet 15 is powered, the first iron sheet 17 is attracted to move towards the first electromagnet 15, the movement of the first iron sheet 17 drives the first piston 16 and the first sealing plate 18 to move, and then the sealing of the preheating pipeline 7 is opened, so that the steam in the preheating pipeline 7 enters the preheater 8, because the spring is fixedly arranged between the first piston 16 and the inner wall of the first sealing cavity 14, when the first electromagnet 15 is powered off, the first piston 16 moves away from the first electromagnet 15, and then the preheating pipeline 7 is resealed, preventing the steam in the preheating pipeline 7 from entering the preheater 8, so that when the steam temperature from the second heat exchanger 6 is high, the steam can be further utilized, and the utilization rate of steam heat can be improved.

[0048] As an embodiment of the present application, referring to Figure 3 The sealing assembly comprises a second sealing cavity 19 provided in the inside of the power generation equipment body 1, the second sealing cavity 19 is movably provided with a second piston 20, the side of the second piston 20 is fixedly provided with a second sealing plate 21, and the second sealing cavity 19 and the first sealing cavity 14 are connected through an air pipe.

[0049] When the first piston 16 moves closer to the first electromagnet 15, it draws gas from the first sealed cavity 14 into the second sealed cavity 19 through the vent pipe. This increased gas volume in the second sealed cavity 19 pushes the second piston 20 closer to the second sealing plate 21. This movement, in turn, pushes the second sealing plate 21 away from the second piston 20, sealing the connection between the preheating pipe 7 and the condensing pipe 9, preventing high-temperature steam from directly entering the condensing pipe 9. When the first piston 16 moves away from the first electromagnet 15, the gas in the second sealed cavity 19... The gas will then return to the first sealed chamber 14 through the vent pipe. Then, the gas in the second sealed chamber 19 will decrease, and the second piston 20 will move away from the second sealing plate 21. This will cause the second sealing plate 21 to move, opening the connection between the preheating pipe 7 and the condensing pipe 9 through one end of the second sealing plate 21. This allows the steam in the preheating pipe 7 to directly enter the condensing pipe 9. This allows the higher temperature steam to preheat the air and natural gas in the preheater 8, while the lower temperature steam enters the condenser 10 through the condensing pipe 9 for condensation. This improves the utilization rate of steam temperature.

[0050] As one embodiment of the present invention, refer to Figure 4 The opening and closing mechanism includes a connecting housing 26 fixedly installed inside the preheating pipe 7, and the connecting housing 26 is located on the side close to the preheater 8. A first insulating plate 27 is movably installed inside the connecting housing 26. A first conductive plate 28 is fixedly installed inside the first insulating plate 27. Two first electrical contact plates 29 that cooperate with the first conductive plate 28 are fixedly installed inside the connecting housing 26. The two first electrical contact plates 29 are electrically connected to the power supply and the first electromagnet 15, respectively. A spring is fixedly installed between the first insulating plate 27 and the inner wall of the connecting housing 26. A one-way valve is fixedly installed at the end of the preheating pipe 7 near the preheater 8. A detection component for controlling the movement of the first insulating plate 27 is fixedly installed inside the preheating pipe 7.

[0051] When the first insulating plate 27 is pushed, it will move towards the first contact plate 29, and then the circuit of the two first contact plates 29 will be connected by the first conductive plate 28, causing the first electromagnet 15 to work. When the first insulating plate 27 loses its pushing force, because a spring is fixedly installed between the first insulating plate 27 and the inner wall of the connecting shell 26, the first insulating plate 27 will move away from the first contact plate 29, and then the connection between the two first contact plates 29 will be broken, causing the first electromagnet 15 to stop working. The one-way valve can prevent the steam in the preheater 8 from flowing back into the preheating pipe 7, so as to control the steam entering the preheater 8 or entering the condensing pipe 9 in a timely manner, and can better utilize the steam above the set value.

[0052] As one embodiment of the present invention, refer to Figure 4 The detection assembly includes a detection groove 22 inside the preheating pipe 7, alcohol 23 is placed inside the detection groove 22, a piston push plate 24 is movably installed on one side of the alcohol 23, and a push rod 25 is fixedly installed on the side of the piston push plate 24 away from the piston push plate 24. The push rod 25 extends into the connecting housing 26 and is fixedly connected to the first insulating plate 27.

[0053] When the temperature of the steam reaching the detection tank 22 is high, the alcohol 23 will expand significantly, pushing the piston push plate 24 to move away from the alcohol 23. When the temperature of the steam reaching the detection tank 22 is low, the alcohol 23 will contract, moving away from the first insulating plate 27 and the first electrical contact plate 29. At the same time, the piston push plate 24 will be moved by the push rod 25. This allows for timely detection of whether the steam temperature is suitable for preheating the air and natural gas, thus enabling better utilization of the steam temperature.

[0054] As one embodiment of the present invention, refer to Figure 5 The preheater 8 has a drain outlet at its bottom end and a sealing groove 34 inside. An electric spring 35 is fixedly installed inside the sealing groove 34 and is electrically connected to a power source. A first push plate 36 is fixedly installed on one side of the electric spring 35, and a third sealing plate 37 is fixedly installed on the side of the first push plate 36 away from the electric spring 35, extending into the drain outlet. A delay mechanism for controlling the opening and closing of the electric spring 35 is fixedly installed inside the preheater 8.

[0055] When the energized spring 35 is powered on, it contracts, pulling the first push plate 36 closer to it. This movement of the first push plate 36 moves the third sealing plate 37, opening the seal on the drain outlet. When the energized spring 35 is de-energized, it extends, pushing the first push plate 36 away from it. This movement of the first push plate 36 moves the third sealing plate 37, sealing the drain outlet. When the water level inside the preheater 8 reaches a set value (which can be adjusted as needed), the water enters the first heat exchanger 3, facilitating better power generation through circulation.

[0056] As one embodiment of the present invention, refer to Figure 6 The delay mechanism includes a delay housing 43 fixedly installed inside the preheater 8. A second electromagnet 44 is fixedly installed inside the delay housing 43. A lifting plate 45 is movably installed at the end of the delay housing 43 away from the second electromagnet 44. A third iron plate 47 is fixedly installed on the side of the lifting plate 45 close to the second electromagnet 44. A third conductive plate 46 is fixedly installed inside the lifting plate 45. Two third electrical connection plates 48 that cooperate with the third conductive plate 46 are fixedly installed inside the delay housing 43. The two third electrical connection plates 48 are electrically connected to the power supply and the energized spring 35, respectively. A control component for controlling the operation of the second electromagnet 44 is fixedly installed inside the preheater 8.

[0057] When the second electromagnet 44 is energized, it will attract the third iron plate 47 to move closer to the second electromagnet 44. The movement of the third iron plate 47 can drive the lifting plate 45 to move. Then, the third conductive plate 46 inside the lifting plate 45 connects the circuits of the two third electrical plates 48. Through the connection of the circuits of the two third electrical plates 48, the energized spring 35 will work, which can prevent the drain outlet from sealing when the water in the preheater 8 has not completely drained.

[0058] As one embodiment of the present invention, refer to Figure 5 A drain pipe 30 is fixedly installed at the lower end of the drain outlet, and the drain pipe 30 is connected to the first heat exchanger 3. Two guide rods 31 are symmetrically installed on the inner wall of the drain outlet, and a water float 32 is slidably installed on the two guide rods 31. Two magnets 33 are symmetrically installed on both sides of the water float 32. A one-way valve is fixedly installed on the side of the drain pipe 30 near the first heat exchanger 3.

[0059] When there is too much water in the preheater 8, the float plate 32 will move upward along the guide rod 31. After the float plate 32 moves to the set position, the energized spring 35 will work to open the seal of the drain outlet, allowing the water in the drain outlet to flow into the first heat exchanger 3 through the pipe. The one-way valve can prevent the water in the first heat exchanger 3 from flowing back into the drain pipe 30. When the water in the drain outlet is drained, the float plate 32 will return to the bottom of the drain outlet. This can prevent the water in the first heat exchanger 3 from entering the preheater 8, allowing the preheater 8 to preheat better.

[0060] As one embodiment of the present invention, refer to Figure 5 The control assembly includes a trigger housing 38 fixedly installed inside the preheater 8, a second insulating plate 39 movably installed inside the trigger housing 38, a second conductive plate 40 fixedly installed inside the second insulating plate 39, two second grounding plates 42 that cooperate with the second conductive plate 40 fixedly installed inside the trigger housing 38, and the two second grounding plates 42 are electrically connected to the second electromagnet 44 and the power supply respectively, and a second iron piece 41 that cooperates with the magnet 33 is fixedly installed on the second insulating plate 39.

[0061] When the water level in the drain reaches the set value, the magnet 33 on the float plate 32 attracts the second iron plate 41 to move closer to the float plate 32, which in turn moves the second insulating plate 39 and the second conductive plate 40. The movement of the second insulating plate 39 and the second conductive plate 40 connects the circuit of the two second electrical plates 42, causing the second electromagnet 44 to work. When all the water in the drain has flowed out, the float plate 32 moves downward. Because the second insulating plate 39 is fixedly installed with a spring between it and the trigger housing 38, the second insulating plate 39 moves away from the float plate 32, disconnecting the circuit of the two second electrical plates 42 and stopping the second electromagnet 44 from working. This prevents the drain from sealing before all the water has flowed out.

[0062] As one embodiment of the present invention, refer to Figure 1 A vertical plate 12 is fixedly installed in the middle of the preheater 8. Multiple through holes 49 are opened at the bottom of the vertical plate 12. The outlet of the preheating pipe 7 is higher than the through holes 49. A one-way valve is fixedly installed on the side of the condensing pipe 9 near the preheater 8.

[0063] When water accumulates in the higher parts of the preheater 8, it can flow to the lower parts through the through hole 49. At the same time, it prevents the steam that just entered the preheater 8 from directly entering the condenser pipe 9 before it has exchanged heat. The one-way valve can prevent steam with a temperature lower than the set value from entering the preheater 8. This allows for better utilization of the waste heat of the steam to preheat the air and natural gas that are about to be burned.

[0064] Working Principle: When the equipment is working, it draws in outside air and natural gas through gas inlet 13 into reactor 2, where they are combusted. Steam is generated through the first heat exchanger 3, and the flue gas is discharged through flue pipe 4. The high-temperature steam then enters the steam turbine 5 for power generation. The steam then enters the second heat exchanger 6 for preheating with water. When the steam exits the second heat exchanger 6, it is transferred through preheating pipe 7 to preheater 8 for detection. When the steam reaches the detection tank 22 at a high temperature, the alcohol 23 expands significantly, pushing the piston pusher plate 24 away from the alcohol 23. This movement of the piston pusher plate 24... When the first insulating plate 27 moves toward the first contact plate 29, the circuit of the two first contact plates 29 is connected by the first conductive plate 28, causing the first electromagnet 15 to operate. The connection of the two first contact plates 29 energizes the energizing spring 35. When the first electromagnet 15 is energized, it attracts the first iron plate 17 to move closer to the first electromagnet 15. The movement of the first iron plate 17 drives the first piston 16 and the first sealing plate 18 to move, thereby opening the seal on the preheating pipe 7 and allowing the steam in the preheating pipe 7 to enter the preheater 8. When the first piston 16 moves closer to the first electromagnet 15, it also opens the seal on the first sealing cavity 14. Gas enters the second sealed chamber 19 through the vent pipe. As the gas volume increases in the second sealed chamber 19, it pushes the second piston 20 towards the second sealing plate 21. This movement pushes the second sealing plate 21 away from the second piston 20, sealing the connection between the preheating pipe 7 and the condensing pipe 9, preventing high-temperature steam from directly entering the condensing pipe 9. When the steam temperature reaching the detection tank 22 is low, the alcohol 23 contracts, causing the first insulating plate 27 to move away from the first electrical contact plate 29. Simultaneously, the push rod 25 pushes the piston push plate 24, disconnecting the connection between the two first electrical contact plates 29. When connection 29 is disconnected, the first electromagnet 15 will break the circuit. Because a spring is fixedly installed between the first piston 16 and the inner wall of the first sealing cavity 14, when the first electromagnet 15 is de-energized, the first piston 16 will move away from the first electromagnet 15, and then reseal the preheating pipe 7, preventing steam in the preheating pipe 7 from entering the preheater 8. When the first piston 16 moves away from the first electromagnet 15, the gas in the second sealing cavity 19 will return to the first sealing cavity 14 through the vent pipe. Then, the gas in the second sealing cavity 19 will decrease, and the second piston 20 will move away from the second sealing plate 21, thus moving the second sealing plate 21.The connection between the preheating pipe 7 and the condensing pipe 9 is opened through one end of the second sealing plate 21, allowing the steam in the preheating pipe 7 to directly enter the condensing pipe 9. When the first insulating plate 27 loses its thrust, because a spring is fixedly installed between the first insulating plate 27 and the inner wall of the connecting shell 26, the first insulating plate 27 will move away from the first electrical plate 29, thus disconnecting the connection between the two first electrical plates 29. This causes the first electromagnet 15 to stop working. The one-way valve prevents the steam in the preheater 8 from flowing back into the preheating pipe 7, and then preheats the gas and natural gas in the preheater 8. During heat exchange in the preheater 8, the temperature of the steam is reduced, and the steam is converted into... When water accumulates in the higher parts of the preheater 8, it can flow to the lower parts through the through hole 49. When there is too much water in the preheater 8, the water float 32 will move upward along the guide rod 31. After the water float 32 moves to the set position, the magnet 33 on the water float 32 will attract the second iron piece 41 to move closer to the water float 32, which will then drive the second insulating plate 39 and the second conductive plate 40 to move. Through the movement of the second insulating plate 39 and the second conductive plate 40, the circuit of the two second connecting plates 42 can be connected by the second conductive plate 40, which will then make the second electromagnet 44 work. When the second electromagnet 44 is energized, it will attract the third iron piece 47 to move closer to the second electromagnet 44. The movement of the third iron plate 47 drives the lifting plate 45 to move. Then, the third conductive plate 46 inside the lifting plate 45 connects the circuits of the two third electrical plates 48. This connection of the circuits of the two third electrical plates 48 activates the energized spring 35. When the energized spring 35 is energized, it contracts, pulling the first push plate 36 towards the energized spring 35. The movement of the first push plate 36 drives the third sealing plate 37 to move. When the third sealing plate 37 moves towards the energized spring 35, it opens the seal on the drain outlet, allowing water from the drain outlet to flow into the first heat exchanger 3. When all the water in the drain outlet is... When the water flows out, the float plate 32 moves downward. Because a spring is fixedly installed between the second insulating plate 39 and the trigger housing 38, the second insulating plate 39 moves away from the float plate 32, disconnecting the circuit between the two second electrical plates 42 and stopping the second electromagnet 44. When the second electromagnet 44 stops working, the lifting plate 45 slowly falls downward, extending the connection time between the two third electrical plates 48. When the energizing spring 35 disconnects the power, it extends, pushing the first push plate 36 away from the energizing spring 35. The movement of the first push plate 36 moves the third sealing plate 37, sealing the drain outlet.

[0065] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power via transformers. The main controller can be a conventional known device such as a computer for control. The product models provided in this invention are only for use based on the structural features of the product in this technical solution. The product will be adjusted and modified after purchase to better match and conform to the technical solution of this invention. It is an optimal application of this technical solution. The product models can be replaced and modified according to the required technical parameters. This is well known to those skilled in the art. Therefore, those skilled in the art can clearly obtain the corresponding usage effects through the technical solution provided by this invention.

[0066] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A supercritical carbon dioxide cycle power generation device integrating a coal-fired boiler, comprising a main body of the power generation device, characterized in that: A first heat exchanger is fixedly installed inside the main body of the power generation equipment. A reactor is fixedly installed on one side of the first heat exchanger. A gas inlet is fixedly installed on the side of the reactor away from the first heat exchanger and extends to the outside of the main body of the power generation equipment. A flue gas pipe is fixedly installed on the other side of the first heat exchanger. A steam turbine is fixedly installed at the lower end of the first heat exchanger near the flue gas pipe. A second heat exchanger is fixedly installed inside the main body of the power generation equipment and is connected to the steam turbine via a pipe. A preheater is fixedly installed inside the main body of the power generation equipment and is located on the gas inlet. The second heat exchanger is connected to the preheater via a preheating pipe. A condenser is fixedly installed inside the main body of the power generation equipment and is connected to the preheater via a condensing pipe. A pump is fixedly installed inside the main body of the power generation equipment and is connected to the condenser via a pipe. The pump is connected to the first heat exchanger via a pipe, and the pipe passes through the inside of the second heat exchanger. A sealing assembly that cooperates with the preheating pipe is installed inside the main body of the power generation equipment. Sealing component: When the steam temperature exceeds the set value, the sealing component will open the pipe leading to the preheater; The main body of the power generation equipment is equipped with a power source. The sealing assembly includes a first sealing cavity opened inside the main body of the power generation equipment. A first electromagnet is fixedly installed inside the first sealing cavity and electrically connected to the power source. A first piston is movably installed on the side of the first sealing cavity away from the first electromagnet. A first iron plate is fixedly installed on the side of the first piston close to the first electromagnet. A first sealing plate is fixedly installed on the side of the first piston away from the first electromagnet and extends into the preheating pipe. A spring is fixedly installed between the first piston and the inner wall of the first sealing cavity. A sealing assembly is fixedly installed inside the main body of the power generation equipment. An opening and closing mechanism for controlling the opening and closing of the first electromagnet is fixedly installed inside the main body of the power generation equipment. The sealing assembly includes a second sealing cavity opened inside the main body of the power generation equipment, a second piston movably installed inside the second sealing cavity, a second sealing plate fixedly installed on one side of the second piston, and the second sealing cavity and the first sealing cavity connected by a vent pipe. The detection assembly includes a detection tank inside the preheating pipe, alcohol is placed inside the detection tank, a piston push plate is movably installed on one side of the alcohol, and a push rod is fixedly installed on the side of the piston push plate away from the piston push plate. The push rod extends into the connecting housing and is fixedly connected to the first insulating plate. The delay mechanism includes a delay housing fixedly installed inside the preheater. A second electromagnet is fixedly installed inside the delay housing. A lifting plate is movably installed at the end of the delay housing away from the second electromagnet. A third iron plate is fixedly installed on the side of the lifting plate close to the second electromagnet. A third conductive plate is fixedly installed inside the lifting plate. Two third electrical connection plates that cooperate with the third conductive plate are fixedly installed inside the delay housing. The two third electrical connection plates are electrically connected to the power supply and the energized spring, respectively. A control component for controlling the operation of the second electromagnet is fixedly installed inside the preheater. A drain outlet is fixedly installed at the lower end of the drain pipe. Two guide rods are symmetrically installed on the inner wall of the drain outlet. A float plate is slidably installed on the two guide rods. Two magnets are symmetrically installed on both sides of the float plate. A one-way valve is fixedly installed on the side of the drain pipe closest to the first heat exchanger.

2. A supercritical carbon dioxide cycle power generation device for an integrated coal-fired boiler according to claim 1, characterized in that: The opening and closing mechanism includes a connecting shell fixedly installed inside the preheating pipe, with the connecting shell located near the preheater. A first insulating plate is movably installed inside the connecting shell, and a first conductive plate is fixedly installed inside the first insulating plate. Two first electrical contact plates that cooperate with the first conductive plate are fixedly installed inside the connecting shell, and the two first electrical contact plates are electrically connected to a power source and a first electromagnet, respectively. A one-way valve is fixedly installed at the end of the preheating pipe near the preheater, and a detection component for controlling the movement of the first insulating plate is fixedly installed inside the preheating pipe.

3. A supercritical carbon dioxide cycle power generation device for an integrated coal-fired boiler according to claim 1, characterized in that: The preheater has a drain outlet at the bottom and a sealing groove inside. An electric spring is fixedly installed inside the sealing groove and is electrically connected to a power source. A first push plate is fixedly installed on one side of the electric spring, and a third sealing plate is fixedly installed on the side of the first push plate away from the electric spring, extending into the drain outlet. A delay mechanism for controlling the opening and closing of the electric spring is fixedly installed inside the preheater.

4. A supercritical carbon dioxide cycle power generation device for an integrated coal-fired boiler according to claim 1, characterized in that: The control assembly includes a trigger housing fixedly installed inside the preheater. A second insulating plate is movably installed inside the trigger housing. A second conductive plate is fixedly installed inside the second insulating plate. Two second electrical contact plates that cooperate with the second conductive plate are fixedly installed inside the trigger housing. The two second electrical contact plates are electrically connected to the second electromagnet and the power supply, respectively. A second iron plate that cooperates with the magnet is fixedly installed on the second insulating plate.

5. A supercritical carbon dioxide cycle power generation device for an integrated coal-fired boiler according to claim 1, characterized in that: A vertical plate is fixedly installed in the middle of the preheater. Multiple through holes are opened at the bottom of the vertical plate. The outlet of the preheating pipe is higher than the through holes. A one-way valve is fixedly installed on the side of the condensing pipe near the preheater.

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