Thermal power plant boiler flue gas waste heat energy-saving system

Abstract

The invention relates to the technical field of flue gas waste heat recovery, and provides a thermal power plant boiler flue gas waste heat energy-saving system which can prevent harmful gas from being discharged, effectively utilize flue gas waste heat, cannot cause waste of water resources, is not easy to increase maintenance cost due to scale production, and is relatively high in practicability and relatively high in practicability. Comprising a smoke exhaust pipe, a heating tank, a filtering assembly, a Y-shaped smoke channel and a first water pump, the filtering assembly is arranged on the smoke exhaust pipe and used for filtering smoke, the Y-shaped smoke channel communicates with the smoke exhaust pipe, a condensation assembly used for condensing the smoke is arranged on the Y-shaped smoke channel, a receiving hopper communicates with the Y-shaped smoke channel, and the heating tank is arranged in the receiving hopper. The receiving hopper is communicated with a temporary storage box through a connecting pipe, the first water pump is communicated with the temporary storage box through a water outlet pipe, the first water pump is communicated with a temperature rising pipe, the temperature rising pipe is arranged on the smoke exhaust pipe, the temperature rising pipe is communicated with a second water pump, the second water pump is communicated with a heat preservation pipe, and the heat preservation pipe is arranged on the heating tank.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas waste heat recovery, and particularly relates to a flue gas waste heat energy-saving system for a thermal power plant boiler. Background Art

[0002] A thermal power plant boiler is an energy converter that uses the heat energy released by fuel combustion or other heat energy to heat working medium water or other fluids to a certain parameter. When in use, a thermal power plant boiler will discharge a large amount of high-temperature gas through a smoke exhaust pipe. The discharged high-temperature gas contains a large amount of harmful substances, which will not only pollute the air, but also cause heat loss when the high-temperature gas is directly discharged.

[0003] In the prior art, there is a flue gas waste heat energy-saving device for a thermal power plant boiler, with the patent publication number CN119163990A. The flue gas generated by boiler combustion enters the annular heat-insulating pipe from the smoke inlet, and the flue gas is shunted from the annular heat-insulating pipe into multiple flue pipes. The multiple flue pipes respectively heat the water bodies in multiple heating tanks. The heated water bodies are centrally discharged into the drainage buffer tank from the water outlet, and then discharged from the drainage port, so that the hot water is utilized, achieving good recovery of flue gas preheating and playing an energy-saving and consumption-reducing effect. After the temperature sensor detects that the water body in the heating tank reaches the preset temperature, the second solenoid valve closes to prevent the flue gas from entering the corresponding flue pipe, and the first solenoid valve opens to discharge the hot water in the heating tank from the water outlet into the drainage buffer tank, so that the water temperature discharged from the drainage port in the drainage buffer tank can reach the preset value.

[0004] The above-mentioned technology and existing technologies generally heat water with high-temperature gas, and then the heated water heats and insulates the heating tank of the boiler. However, this consumes a large amount of water. Although some technologies can achieve water circulation, after long-term use, scale will form in the water pipes, causing water blockage and increasing the cost of maintaining the water pipes. Summary of the Invention

[0005] Aiming at the deficiency of the large water consumption for recovering flue gas waste heat in the prior art, the present invention provides a flue gas waste heat energy-saving system for a thermal power plant boiler.

[0006] To achieve the above object, the present invention provides the following technical solution: An energy-saving device for the waste heat of boiler flue gas in a thermal power plant, comprising a smoke exhaust pipe, a heating tank, a filtering component, a Y-shaped flue gas channel and a first water pump. The filtering component is arranged on the smoke exhaust pipe and is used for filtering the flue gas. The Y-shaped flue gas channel is connected to the smoke exhaust pipe, and a condensing component for condensing the flue gas is arranged on the Y-shaped flue gas channel. A receiving hopper is connected to the Y-shaped flue gas channel, and a temporary storage tank is connected to the receiving hopper through a connecting pipe. The first water pump is connected to the temporary storage tank through a water outlet pipe, and a heating pipe is connected to the first water pump. The heating pipe is arranged on the smoke exhaust pipe, and a second water pump is connected to the heating pipe. A heat preservation pipe is connected to the second water pump, the heat preservation pipe is arranged on the heating tank, and a water storage tank is connected to the heat preservation pipe.

[0007] Preferably, the filtering component includes a fixing frame, a buckle component, a fixing ring, a fixing rod, a sliding sleeve, a supporting net and a separating component. The fixing frame is connected to the smoke exhaust pipe through a disassembly component. The buckle component is arranged on the smoke exhaust pipe and is used for further restricting the position of the fixing frame. A plurality of fixing rings are provided, and the plurality of fixing rings are all fixedly connected to the fixing frame. A plurality of fixing rods are provided, and the plurality of fixing rods are respectively fixedly connected to the plurality of fixing rings. A plurality of sliding sleeves are provided, and the plurality of sliding sleeves are slidably sleeved on the plurality of fixing rods. Two supporting nets are provided, and the supporting nets are fixedly connected to the plurality of sliding sleeves on one side. Activated carbon particles are arranged between the two supporting nets. The separating component is arranged on the fixing frame and is used for driving the two supporting nets to move away from each other.

[0008] Further, the disassembly component includes a mounting plate and mounting bolts. The mounting plate is fixedly connected to the fixing frame. A plurality of mounting bolts are provided, and the mounting bolts are threadedly connected to the mounting plate. Mounting screw grooves matching the mounting bolts are formed on the smoke exhaust pipe.

[0009] Still further, the buckle component includes a sliding cylinder, a sliding rod, a pressing plate, a telescopic spring and a clamping block. The sliding cylinder is fixedly connected to the smoke exhaust pipe. The sliding rod is slidably sleeved on the sliding cylinder. The pressing plate is fixedly connected to the sliding rod. The telescopic spring is sleeved on the sliding cylinder and the sliding rod, and the telescopic spring is connected between the pressing plate and the smoke exhaust pipe. The clamping block is fixedly connected to the pressing plate, and the clamping block is slidably connected to the smoke exhaust pipe. A clamping groove matching the clamping block is formed on the fixing frame.

[0010] Further, the separation component includes a protective cover, an electric push rod, a rotating seat, a rotating plate, a turntable, and a pushing plate. The protective cover is fixedly connected to the fixed frame. The electric push rod is fixedly installed on the fixed frame. The rotating seat is fixedly connected to the output end of the electric push rod. There are two rotating plates, and both of the two rotating plates are rotatably sleeved on the rotating seat. There are two turntables, and the two turntables are respectively rotatably sleeved on the two rotating plates. There are two pushing plates, and the two pushing plates are respectively fixedly connected to the two turntables. The pushing plate penetrates through the protective cover and is fixedly connected to the support net.

[0011] Based on the foregoing solution, preferably, the condensation component includes a condensation box, a refrigerator, a refrigeration pipe, a heat conduction plate, and a water cleaning component. The condensation box is fixedly connected to the Y-shaped flue gas passage. The refrigerator is fixedly installed on the condensation box. The refrigeration pipe is communicated with the refrigerator, and the refrigeration pipe is fixedly connected to the inside of the condensation box through a fixed buckle. The heat conduction plate is fixedly connected to the condensation box. The water cleaning component is arranged on the Y-shaped flue gas passage for cleaning the condensed water into the receiving hopper.

[0012] Based on the foregoing solution, further, a plurality of condensation plates are fixedly connected to the heat conduction plate.

[0013] Based on the foregoing solution, still further, the water cleaning component includes a lifting rod, a lifting plate, a U-shaped water scraping plate, and a lifting component. There are a plurality of lifting rods, and all of the plurality of lifting rods are slidably connected to the Y-shaped flue gas passage. The lifting plate is fixedly connected to the plurality of lifting rods. There are a plurality of U-shaped water scraping plates, and the plurality of U-shaped water scraping plates are respectively fixedly connected to the plurality of lifting rods. The lifting component is arranged on the Y-shaped flue gas passage for driving the lifting plate to move up and down.

[0014] Based on the foregoing solution, further, the lifting component includes a storage box, a rotating screw rod, a threaded plate, and a motor. The storage box is fixedly connected to the Y-shaped flue gas passage. The rotating screw rod is rotatably connected to the storage box. The threaded plate is threadedly sleeved on the rotating screw rod. The threaded plate is slidably connected to the storage box, and the threaded plate is fixedly connected to the lifting plate. The motor is fixedly installed on the storage box. The output end of the motor penetrates through the storage box and is concentrically connected to the rotating screw rod.

[0015] A system of a waste heat energy-saving device for a thermal power plant boiler includes the above-mentioned waste heat energy-saving device for a thermal power plant boiler, and further includes the following steps:

[0016] S1. High-temperature flue gas is discharged through the exhaust pipe. The flue gas first passes through the activated carbon particles to absorb harmful substances in the flue gas. Then the high-temperature gas enters the Y-shaped flue gas channel. The refrigerator cools through the refrigeration pipe. The high-temperature gas encounters the temperature guide plate and condenses into water droplets.

[0017] S2. The output end of the motor drives the rotating screw to rotate, and the rotating screw drives the threaded plate to slide up and down, and the threaded plate drives the lifting plate to move up and down. The lifting plate drives the U-shaped scraper plate to move up and down through the lifting rod, so that the water droplets on the condensation plate and the temperature guide plate can be scraped off and concentrated into the receiving bucket, and then the water droplets enter the temporary storage box through the connecting pipe;

[0018] S3, the first water pump transports the water in the temporary storage box to the heating pipe through the water outlet pipe, the high-temperature gas in the exhaust pipe raises the temperature of the water in the heating pipe, and the second water pump transports the heated water to the insulation pipe to heat and insulate the heating tank, and finally the water enters the water storage tank;

[0019] S4. When replacing the activated carbon particles, turn the mounting bolts to disengage the mounting bolts from the mounting screw grooves, pull the pressing plate to drive the card block to disengage from the card grooves, and move the fixed frame out of the smoke exhaust pipe. Then the electric push rod drives the rotating seat to move upward, and the rotating plate rotates between the rotating seat and the turntable, driving the push plate to move, thereby driving the two supporting nets to move away from each other, and the activated carbon particles can be replaced.

[0020] Compared with the prior art, the present invention provides a thermal power plant boiler flue gas waste heat energy saving system, which has the following beneficial effects:

[0021] In the present invention, high-temperature flue gas is discharged through the flue gas exhaust pipe, and the flue gas is filtered through the filtering component. Then the high-temperature gas enters the Y-shaped flue gas channel. The flue gas is condensed into water droplets through the condensing component and the water droplets enter the receiving bucket. Then the water droplets enter the temporary storage box through the connecting pipe. The first water pump transports the water in the temporary storage box to the heating pipe through the water outlet pipe. The high-temperature gas in the flue gas exhaust pipe increases the temperature of the water in the heating pipe. The second water pump transports the heated water to the insulation pipe to heat and insulate the heating tank. Finally, the water enters the water storage tank. Therefore, the boiler flue gas waste heat energy-saving device of the thermal power plant can prevent the discharge of harmful gases, and effectively utilize the flue gas waste heat. It will not cause waste of water resources, and it is not easy to increase maintenance costs due to scale generation. It is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 It is a three-dimensional structure diagram of the whole of the present invention;

[0024] Figure 2 It is a three-dimensional structure diagram of the partial cross-section of the cooperation of the fixing frame, support net and mounting plate of the present invention;

[0025] Figure 3 It is a three-dimensional structure diagram of the cooperation of the pressing plate, telescopic spring and clamping block of the present invention;

[0026] Figure 4 It is a disassembled three-dimensional structure diagram of the cooperation of the sliding cylinder, sliding rod and pressing plate of the present invention;

[0027] Figure 5 It is a three-dimensional structure diagram of the cooperation of the support net, mounting plate and mounting bolts of the present invention;

[0028] Figure 6 It is a disassembled partial cross-sectional three-dimensional structure diagram of the cooperation of the sliding sleeve, support net and protective cover of the present invention;

[0029] Figure 7 For the present invention Figure 6 The partial enlarged structure diagram at position A in;

[0030] Figure 8 It is a partial cross-sectional three-dimensional structure diagram of the cooperation of the protective cover, electric push rod and rotating base of the present invention;

[0031] Figure 9 It is a three-dimensional structure diagram of the cooperation of the rotating plate, turntable and pushing plate of the present invention;

[0032] Figure 10 It is a partial cross-sectional three-dimensional structure diagram of the cooperation of the condensation box, refrigerator and refrigeration pipe of the present invention;

[0033] Figure 11 It is a three-dimensional structure diagram of the cooperation of the Y-shaped flue gas channel, receiving hopper and connecting pipe of the present invention;

[0034] Figure 12 It is a three-dimensional structure diagram of the cooperation of the lifting rod, lifting plate and storage box of the present invention;

[0035] Figure 13 For the present invention Figure 12Schematic diagram of the partially enlarged structure at position B in the [Chinese description];

[0036] Figure 14 Schematic three-dimensional structure diagram of the partial section view of the cooperation of the rotating screw, threaded plate, motor, etc. of the present invention;

[0037] Figure 15 Schematic three-dimensional structure diagram of the cooperation of the temporary storage box, first water pump, water outlet pipe, etc. of the present invention.

[0038] In the figure: 1, smoke exhaust pipe; 2, heating tank; 3, Y-shaped flue gas channel; 4, receiving hopper; 5, connecting pipe; 6, temporary storage box; 7, first water pump; 8, water outlet pipe; 9, heating pipe; 10, second water pump; 11, heat preservation pipe; 12, water storage tank; 13, fixed frame; 14, fixed ring; 15, fixed rod; 16, sliding sleeve; 17, support net; 18, mounting plate; 19, mounting bolt; 20, sliding cylinder; 21, sliding rod; 22, pressing plate; 23, telescopic spring; 24, clamping block; 25, protective cover; 26, electric push rod; 27, rotating seat; 28, rotating plate; 29, turntable; 30, pushing plate; 31, condensation box; 32, refrigerator; 33, refrigeration pipe; 34, heat conduction plate; 35, condensation plate; 36, lifting rod; 37, lifting plate; 38, U-shaped wiper; 39, storage box; 40, rotating screw; 41, threaded plate; 42, motor. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] Embodiment 1

[0041] Please refer to Figures 1 to 15, a waste heat energy-saving device for the boiler flue gas of a thermal power plant, comprising a smoke exhaust pipe 1, a heating tank 2, a filtering assembly, a Y-shaped flue gas passage 3 and a first water pump 7. The filtering assembly is arranged on the smoke exhaust pipe 1 and is used for filtering the flue gas. The filtering assembly includes a fixing frame 13, a clamping component, a fixing ring 14, a fixing rod 15, a sliding sleeve 16, a support net 17 and a separating component. The fixing frame 13 is connected to the smoke exhaust pipe 1 through a dismounting component. The dismounting component includes a mounting plate 18 and mounting bolts 19. The mounting plate 18 is fixedly connected to the fixing frame 13. There are multiple mounting bolts 19, and the mounting bolts 19 are threadedly connected to the mounting plate 18. And mounting screw grooves matching with the mounting bolts 19 are formed on the smoke exhaust pipe 1. Rotating the mounting bolts 19 to make the mounting bolts 19 enter the mounting screw grooves is convenient for restricting the positions of the mounting plate 18 and the fixing frame 13. The clamping component is arranged on the smoke exhaust pipe 1 and is used for further restricting the position of the fixing frame 13. The clamping component includes a sliding cylinder 20, a sliding rod 21, a pressing plate 22, a telescopic spring 23 and a clamping block 24. The sliding cylinder 20 is fixedly connected to the smoke exhaust pipe 1. The sliding rod 21 is slidably sleeved on the sliding cylinder 20. The pressing plate 22 is fixedly connected to the sliding rod 21. The telescopic spring 23 is sleeved on the sliding cylinder 20 and the sliding rod 21, and the telescopic spring 23 is connected between the pressing plate 22 and the smoke exhaust pipe 1. The clamping block 24 is fixedly connected to the pressing plate 22, and the clamping block 24 is slidably connected to the smoke exhaust pipe 1. A clamping groove matching with the clamping block 24 is formed on the fixing frame 13. The upper side of the clamping block 24 is arc-shaped, which is convenient for the fixing frame 13 to enter the smoke exhaust pipe 1 downward, while the lower side of the clamping block 24 is right-angled, which is convenient for the clamping block 24 to be stuck in the clamping groove to prevent the fixing frame 13 from displacing. When the fixing frame 13 moves downward into the smoke exhaust pipe 1, driven by the telescopic spring 23, the pressing plate 22 moves towards the smoke exhaust pipe 1, driving the clamping block 24 to enter the clamping groove. There are multiple fixing rings 14, and multiple fixing rings 14 are all fixedly connected to the fixing frame 13. There are multiple fixing rods 15, and multiple fixing rods 15 are respectively fixedly connected to multiple fixing rings 14. There are multiple sliding sleeves 16, and multiple sliding sleeves 16 are slidably sleeved on multiple fixing rods 15. There are two support nets 17, and the support nets 17 are fixedly connected to multiple sliding sleeves 16 on one side. And there are activated carbon particles between the two support nets 17. The activated carbon particles are convenient for adsorbing harmful substances in the flue gas. The separating component is arranged on the fixing frame 13 and is used for driving the two support nets 17 to move away from each other. The separating component includes a protective cover 25, an electric push rod 26, a rotating seat 27, a rotating plate 28, a rotating table 29 and a pushing plate 30. The protective cover 25 is fixedly connected to the fixing frame 13. The electric push rod 26 is fixedly installed on the fixing frame 13. The rotating seat 27 is fixedly connected to the output end of the electric push rod 26. There are two rotating plates 28, and the two rotating plates 28 are both rotatably sleeved on the rotating seat 27. There are two rotating tables 29, and the two rotating tables 29 are respectively rotatably sleeved on the two rotating plates 28. There are two pushing plates 30,The two push plates 30 are respectively fixedly connected to the two turntables 29. The push plates 30 penetrate through the protective cover 25 and are fixedly connected to the support net 17. The electric push rod 26 drives the turntable 27 to move upward. The rotating plate 28 rotates between the turntable 27 and the turntable 29, driving the push plate 30 to move, thereby driving the two support nets 17 to move away from each other, facilitating the replacement of the activated carbon particles. A sensor for detecting the gas flow rate can be installed on one side of the exhaust pipe 1 close to the Y-shaped flue gas passage 3. When too many impurities block the support net 17, the air flow rate will decrease, and the sensor detects it and gives an alarm, thereby reminding the worker to clean the support net 17 and replace the activated carbon particles at the same time.,

[0042] Please refer to Figures 1 to 15, the Y-shaped flue gas channel 3 is connected to the exhaust pipe 1. The Y-shaped flue gas channel 3 is set mainly to separate the flue gas and improve the efficiency of flue gas condensation. And a condensation component for condensing the flue gas is provided on the Y-shaped flue gas channel 3. The condensation component includes a condensation box 31, a refrigerator 32, a refrigeration pipe 33, a heat conduction plate 34 and a clear water component. The condensation box 31 is fixedly connected to the Y-shaped flue gas channel 3. The refrigerator 32 is fixedly installed on the condensation box 31. The refrigeration pipe 33 is connected to the refrigerator 32, and the refrigeration pipe 33 is fixedly connected to the inside of the condensation box 31 through a fixed buckle. The heat conduction plate 34 is fixedly connected to the condensation box 31. The clear water component is arranged on the Y-shaped flue gas channel 3 and is used to clean the condensed water into the receiving hopper 4. A plurality of condensation plates 35 are fixedly connected to the heat conduction plate 34 to facilitate increasing the area of flue gas condensation. The clear water component includes a lifting rod 36, a lifting plate 37, a U-shaped water scraping plate 38 and a lifting component. A plurality of lifting rods 36 are provided. The plurality of lifting rods 36 are all slidably connected to the Y-shaped flue gas channel 3. The lifting plate 37 is fixedly connected to the plurality of lifting rods 36. A plurality of U-shaped water scraping plates 38 are provided. The plurality of U-shaped water scraping plates 38 are respectively fixedly connected to the plurality of lifting rods 36. The lifting component is arranged on the Y-shaped flue gas channel 3 and is used to drive the lifting plate 37 to move up and down. The lifting component includes a storage box 39, a rotating screw rod 40, a threaded plate 41 and a motor 42. The storage box 39 is fixedly connected to the Y-shaped flue gas channel 3. The rotating screw rod 40 is rotatably connected to the storage box 39. The threaded plate 41 is threadedly sleeved on the rotating screw rod 40. The threaded plate 41 is slidably connected to the storage box 39, and the threaded plate 41 is fixedly connected to the lifting plate 37. The motor 42 is fixedly installed on the storage box 39. The output end of the motor 42 penetrates through the storage box 39 and is concentrically connected to the rotating screw rod 40. The output end of the motor 42 drives the rotating screw rod 40 to rotate. The rotation of the rotating screw rod 40 drives the threaded plate 41 to slide up and down. The threaded plate 41 drives the lifting plate 37 to move up and down. The lifting plate 37 drives the U-shaped water scraping plate 38 to move up and down through the lifting rod 36, so as to scrape the water droplets on the condensation plate 35 and the heat conduction plate 34 and concentrate them into the receiving hopper 4. A receiving hopper 4 is connected to the Y-shaped flue gas channel 3. A temporary storage box 6 is connected to the receiving hopper 4 through a connecting pipe 5. The first water pump 7 is connected to the temporary storage box 6 through a water outlet pipe 8. And a temperature-raising pipe 9 is connected to the first water pump 7. The temperature-raising pipe 9 is arranged on the exhaust pipe 1. And a second water pump 10 is connected to the temperature-raising pipe 9. A heat preservation pipe 11 is connected to the second water pump 10. The heat preservation pipe 11 is arranged on the heating tank 2. And a water storage pool 12 is connected to the heat preservation pipe 11. The high-temperature flue gas is discharged through the exhaust pipe 1. The flue gas first adsorbs harmful substances in the flue gas through activated carbon particles. Then the high-temperature gas enters the Y-shaped flue gas channel 3. Because the refrigerator 32 cools through the refrigeration pipe 33, once the high-temperature gas encounters the heat conduction plate 34, it will condense into water droplets. Then the water droplets enter the temporary storage box 6 through the receiving hopper 4 and the connecting pipe 5. The first water pump 7 transports the water in the temporary storage box 6 to the temperature-raising pipe 9 through the water outlet pipe 8.Since the heating pipe 9 is wound around the exhaust pipe 1, the high temperature gas in the exhaust pipe 1 will increase the temperature of the water in the heating pipe 9, and the second water pump 10 will then transport the heated water to the insulation pipe 11 to heat and insulate the heating tank 2. Finally, the water will enter the water tank 12, and the water in the water tank 12 can be used as cleaning water or for watering plants, thereby avoiding waste.

[0043] Example 2

[0044] In summary, when the thermal power plant boiler flue gas waste heat energy-saving device is in use, the high-temperature flue gas is discharged through the flue gas exhaust pipe 1, and the flue gas first absorbs harmful substances in the flue gas through the activated carbon particles, and then the high-temperature gas enters the Y-shaped flue gas channel 3, and the refrigerator 32 is cooled through the refrigeration pipe 33. The high-temperature gas encounters the temperature guide plate 34 and condenses water droplets. The output end of the motor 42 drives the rotating screw 40 to rotate, and the rotating screw 40 rotates to drive the threaded plate 41 to slide up and down, and the threaded plate 41 drives the lifting plate 37 to move up and down. The lifting plate 37 drives the U-shaped scraper plate 38 to move up and down through the lifting rod 36, so that the water drops on the condensation plate 35 and the heat conduction plate 34 can be scraped off and concentrated in the receiving bucket 4, and then the water drops enter the temporary storage box 6 through the connecting pipe 5. The first water pump 7 transports the water in the temporary storage box 6 to the heating pipe 9 through the outlet pipe 8. The high-temperature gas in the exhaust pipe 1 increases the temperature of the water in the heating pipe 9. The second water pump 10 then transports the heated water to the insulation pipe 11 to heat and keep the heating tank 2 warm. Finally, the water enters the water storage tank 12;

[0045] When the activated carbon particles are to be replaced, the mounting bolts 19 are rotated to disengage the mounting screw grooves, and the pressing plate 22 is pulled to drive the clamping block 24 to disengage the clamping grooves, so that the fixed frame 13 can be moved out of the smoke exhaust pipe 1, and then the electric push rod 26 drives the rotating seat 27 to move upward, and the rotating plate 28 rotates between the rotating seat 27 and the turntable 29, driving the push plate 30 to move, thereby driving the two supporting nets 17 away from each other, and the activated carbon particles can be replaced.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thermal power plant boiler flue gas waste heat energy saving device, comprising a flue gas exhaust pipe (1) and a heating tank (2), characterized in that: Also includes: A filter assembly, the filter assembly being arranged on the smoke exhaust pipe (1) and being used for filtering smoke; A Y-shaped smoke channel (3), the Y-shaped smoke channel (3) being connected to the smoke exhaust pipe (1), and the Y-shaped smoke channel (3) being provided with a condensation assembly for condensing smoke, the Y-shaped smoke channel (3) being connected to a receiving bucket (4), and the receiving bucket (4) being connected to a temporary storage box (6) via a connecting pipe (5); A first water pump (7), the first water pump (7) is connected to the temporary storage box (6) through a water outlet pipe (8), and the first water pump (7) is connected to a heating pipe (9), the heating pipe (9) is arranged on the smoke exhaust pipe (1), and the heating pipe (9) is connected to a second water pump (10), the second water pump (10) is connected to a heat preservation pipe (11), the heat preservation pipe (11) is arranged on the heating tank (2), and the heat preservation pipe (11) is connected to a water storage tank (12).

2. A thermal power plant boiler flue gas waste heat energy saving device according to claim 1, characterized in that: The filter assembly comprises: A fixing frame (13), the fixing frame (13) being connected to the smoke exhaust pipe (1) via a disassembly assembly; A buckle assembly, the buckle assembly being arranged on the smoke exhaust pipe (1) and being used to further restrict the position of the fixing frame (13); A fixing ring (14), wherein a plurality of the fixing rings (14) are provided, and the plurality of fixing rings (14) are all fixedly connected to the fixing frame (13); A fixing rod (15), wherein a plurality of the fixing rods (15) are provided, and the plurality of the fixing rods (15) are respectively fixedly connected to the plurality of the fixing rings (14); A sliding sleeve (16), wherein a plurality of the sliding sleeves (16) are provided, and the plurality of the sliding sleeves (16) are slidingly sleeved on the plurality of the fixing rods (15); A support net (17), wherein two support nets (17) are provided, the support nets (17) are fixedly connected to a plurality of the sliding sleeves (16) located on one side, and activated carbon particles are provided between the two support nets (17); A separation component is arranged on the fixing frame (13) and is used for driving the two supporting nets (17) to move away from each other.

3. A thermal power plant boiler flue gas waste heat energy saving device according to claim 2, characterized in that: The disassembly assembly comprises: A mounting plate (18), wherein the mounting plate (18) is fixedly connected to the fixing frame (13); Mounting bolts (19), a plurality of mounting bolts (19) are provided, the mounting bolts (19) are threadedly connected to the mounting plate (18), and the smoke exhaust pipe (1) is provided with mounting screw grooves matching the mounting bolts (19).

4. A thermal power plant boiler flue gas waste heat energy saving device according to claim 3, characterized in that: The buckle assembly comprises: A slide cylinder (20), wherein the slide cylinder (20) is fixedly connected to the smoke exhaust pipe (1); A sliding rod (21), wherein the sliding rod (21) is slidably sleeved on the sliding cylinder (20); A pressing plate (22), wherein the pressing plate (22) is fixedly connected to the sliding rod (21); a telescopic spring (23), wherein the telescopic spring (23) is sleeved on the slide cylinder (20) and the slide rod (21), and the telescopic spring (23) is connected between the pressing plate (22) and the smoke exhaust pipe (1); A card block (24), the card block (24) is fixedly connected to the pressing plate (22), and the card block (24) is slidably connected to the smoke exhaust pipe (1), and a card slot matching the card block (24) is provided on the fixing frame (13).

5. A thermal power plant boiler flue gas waste heat energy saving device according to claim 4, characterized in that: The separation component comprises: A protective cover (25), wherein the protective cover (25) is fixedly connected to the fixing frame (13); An electric push rod (26), wherein the electric push rod (26) is fixedly mounted on the fixed frame (13); A rotating seat (27), wherein the rotating seat (27) is fixedly connected to the output end of the electric push rod (26); A rotating plate (28), wherein two rotating plates (28) are provided, and both rotating plates (28) are rotatably sleeved on the rotating seat (27); A turntable (29), wherein two turntables (29) are provided, and the two turntables (29) are respectively rotatably sleeved on the two rotating plates (28); A push plate (30), wherein two push plates (30) are provided, and the two push plates (30) are respectively fixedly connected to the two turntables (29), and the push plates (30) penetrate the protective cover (25) and are fixedly connected to the support net (17).

6. A thermal power plant boiler flue gas waste heat energy saving device according to claim 5, characterized in that: The condensing assembly comprises: A condensation box (31), wherein the condensation box (31) is fixedly connected to the Y-shaped flue gas channel (3); A refrigerator (32), wherein the refrigerator (32) is fixedly mounted on the condensing tank (31); A refrigeration pipe (33), the refrigeration pipe (33) being connected to the refrigerator (32), and the refrigeration pipe (33) being fixedly connected to the condensation box (31) via a fixing buckle; a heat conduction plate (34), the heat conduction plate (34) being fixedly connected to the condensation box (31); A clean water component is arranged on the Y-shaped smoke channel (3) and is used to clean the condensed water into the receiving bucket (4).

7. A thermal power plant boiler flue gas waste heat energy saving device according to claim 6, characterized in that: A plurality of condensation plates (35) are fixedly connected to the temperature conducting plate (34).

8. The thermal power plant boiler flue gas waste heat energy saving device according to claim 7, characterized in that: The clean water component comprises: A lifting rod (36), wherein a plurality of the lifting rods (36) are provided, and the plurality of lifting rods (36) are all slidably connected to the Y-shaped smoke channel (3); A lifting plate (37), wherein the lifting plate (37) is fixedly connected to the plurality of lifting rods (36); A U-shaped wiper blade (38), wherein a plurality of the U-shaped wiper blades (38) are provided, and the plurality of the U-shaped wiper blades (38) are respectively fixedly connected to the plurality of lifting rods (36); A lifting component, wherein the lifting component is arranged on the Y-shaped smoke channel (3) and is used to drive the lifting plate (37) to move up and down.

9. A thermal power plant boiler flue gas waste heat energy saving device according to claim 8, characterized in that: The lifting assembly comprises: A storage box (39), the storage box (39) being fixedly connected to the Y-shaped smoke channel (3); A rotating screw (40), wherein the rotating screw (40) is rotatably connected to the storage box (39); A threaded plate (41), wherein the threaded plate (41) is threadably sleeved on the rotating screw (40), the threaded plate (41) is slidably connected to the storage box (39), and the threaded plate (41) is fixedly connected to the lifting plate (37); A motor (42) is fixedly mounted on the storage box (39), and an output end of the motor (42) passes through the storage box (39) and is coaxially connected to the rotating screw (40).

10. A system of a flue gas waste heat energy saving device for a thermal power plant boiler, characterized in that: A thermal power plant boiler flue gas waste heat energy-saving device according to any one of claims 1 to 9 is used, comprising the following steps: S1. High-temperature flue gas is discharged through the exhaust pipe (1). The flue gas first passes through the activated carbon particles to absorb harmful substances in the flue gas. Then, the high-temperature gas enters the Y-shaped flue gas channel (3). The refrigerator (32) performs cooling through the cooling pipe (33). The high-temperature gas encounters the heat conduction plate (34) and condenses to form water droplets. S2, the output end of the motor (42) drives the rotating screw (40) to rotate, the rotating screw (40) drives the threaded plate (41) to slide up and down, the threaded plate (41) drives the lifting plate (37) to move up and down, the lifting plate (37) drives the U-shaped scraper plate (38) to move up and down through the lifting rod (36), so that the water drops on the condensation plate (35) and the temperature conduction plate (34) can be scraped off and concentrated into the receiving bucket (4), and then the water drops enter the temporary storage box (6) through the connecting pipe (5); S3, the first water pump (7) transports the water in the temporary storage box (6) to the heating pipe (9) through the water outlet pipe (8), the high-temperature gas in the smoke exhaust pipe (1) raises the temperature of the water in the heating pipe (9), and the second water pump (10) transports the heated water to the insulation pipe (11), heats and insulates the heating tank (2), and finally the water enters the water storage tank (12); S4. When the activated carbon particles are to be replaced, the mounting bolt (19) is rotated to disengage the mounting bolt (19) from the mounting screw groove, and the pressing plate (22) is pulled to drive the clamping block (24) to disengage from the clamping groove, so that the fixing frame (13) can be moved out of the smoke exhaust pipe (1), and then the electric push rod (26) drives the rotating seat (27) to move upward, and the rotating plate (28) rotates between the rotating seat (27) and the turntable (29), driving the push plate (30) to move, thereby driving the two supporting nets (17) to move away from each other, and the activated carbon particles can be replaced.

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