A pre-condensation heat recovery device for a carbon dioxide energy storage system

Abstract

The present invention relates to the technical field of heat energy recovery, and specifically relates to a pre-condensation heat energy recovery device for a carbon dioxide energy storage system, which includes a heat exchange pipeline. Inner and outer annular grooves are respectively provided on the inner and outer sides of the heat exchange pipeline; a cleaning mechanism for recovering the heat energy of liquid carbon dioxide. The cleaning mechanism includes an inner scraping ring, which is slidably connected to the inner annular groove through a plurality of reset members. A circular ring is rotatably connected to the lower end of the inner scraping ring. An annular groove is provided at the upper end of the circular ring. A plurality of fan blades are installed inside the circular ring. A plurality of inner baffles are rotatably connected to the inner side of the inner scraping ring. A pull rope is connected to the lower end of the inner baffle, and the pull rope penetrates through the side wall of the inner scraping ring and is connected to the annular groove. An outer scraping ring is sleeved on the outer annular groove. Compared with the prior art, the present invention can clean both sides of the heat exchange pipeline to maintain the heat exchange efficiency, and can adjust the flow rate of carbon dioxide before and after heat exchange to maintain the heat exchange efficiency of carbon dioxide, and has a good heat exchange effect on carbon dioxide.

Description

Technical Field

[0001] The present invention relates to the technical field of heat energy recovery, and particularly to a pre-condensation heat energy recovery device for a carbon dioxide energy storage system. Background Art

[0002] Carbon dioxide energy storage refers to a new energy storage technology that uses carbon dioxide as an energy storage medium to convert excess electrical energy into the form of compressed gas, so that the gas can be released when needed and converted into electrical energy through a reverse generator. In a carbon dioxide energy storage system, the compressed carbon dioxide gas is liquefied through a condenser, and then the liquefied carbon dioxide is stored in a liquid storage tank. When carbon dioxide is compressed into a liquid under high pressure, due to the decrease in the intermolecular distance and the increase in the intermolecular interaction force, its movement becomes intense, generating a large amount of heat. If the carbon dioxide is directly condensed, it will increase the energy consumption of the condenser and cause energy waste. Therefore, it is necessary to recover the heat energy of carbon dioxide before condensation to reduce the temperature of carbon dioxide and save energy.

[0003] However, in the process of heat energy recovery by existing heat energy recovery devices, due to the possible presence of impurities in the heat exchange medium and carbon dioxide, over time, scale will form on both sides of the heat exchange pipeline, reducing the heat exchange efficiency. Moreover, before and after heat exchange of carbon dioxide, as the temperature of carbon dioxide decreases, the resistance of carbon dioxide in the heat exchange pipeline becomes larger, and the flow rate of carbon dioxide before and after heat exchange shows a difference, resulting in local overcooling or overheating in the heat exchange pipeline, uneven heat distribution, and affecting the heat exchange efficiency.

[0004] Therefore, based on the above problems, we have invented a pre-condensation heat energy recovery device for a carbon dioxide energy storage system. Summary of the Invention

[0005] The purpose of the present invention is to provide a carbon dioxide accumulator to solve the problems raised in the above background art.

[0006] In view of the deficiencies of the prior art, the present invention provides a pre-condensation heat energy recovery device for a carbon dioxide energy storage system to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A pre-condensation heat energy recovery device for a carbon dioxide energy storage system, including a heat exchange pipeline, and an inner annular groove and an outer annular groove are respectively arranged on the inner and outer sides of the heat exchange pipeline;

[0008] A cleaning mechanism is used to recover heat energy from liquid carbon dioxide, the cleaning mechanism comprising an inner scraper ring, the inner scraper ring is slidably connected to the inner annular groove through a plurality of reset members, the lower end of the inner scraper ring is rotatably connected to a circular ring, the upper end of the circular ring is provided with an annular groove, a plurality of fan blades are installed on the inner side of the circular ring, a plurality of inner baffles are rotatably connected to the inner side of the inner scraper ring, the lower end of the inner baffle is connected with a pull rope, the pull rope passes through the side wall of the inner scraper ring and is connected to the annular groove, an outer scraper ring is sleeved on the outer annular groove, the outer scraper ring is slidably connected to the outer annular groove through a plurality of reset members, the outer scraper ring is rotatably connected to the outer baffle outside, a buffer mechanism for buffering the outer baffle is provided on the outer scraper ring, a heat exchange box is fixedly sleeved on the outside of the heat exchange pipeline, and a discharge pipe and a feed pipe are installed on the heat exchange box.

[0009] Furthermore, the plurality of blades are distributed in a circular ring in an annular array.

[0010] Furthermore, the lower end of the heat exchange pipe is connected to a shunt pipe, the lower end of the shunt pipe is connected to multiple regulating pipes, the shunt pipe is provided with an regulating mechanism for limiting the flow of the regulating pipe, the regulating mechanism includes an regulating plate fixedly connected to the bottom of the shunt pipe, the regulating plate is provided with a cavity, multiple threaded rods are rotatably connected in the cavity, a threaded block is rotatably sleeved on the outside of the threaded rod, the threaded block is fixedly connected to the inner wall of the cavity, a fixed plate is slidably connected to the inner wall of the cavity, the lower end of the fixed plate is fixedly connected to a limiting plate, the limiting plate slides through the regulating plate, the shunt pipe is rotatably penetrated by a rotating rod, the lower end of the rotating rod is coaxially fixedly connected to a rotating handle, and the upper end of the rotating rod is connected to the multiple threaded rods through a bevel gear set.

[0011] Furthermore, the bevel gear set includes a first bevel gear and a plurality of second bevel gears meshing with each other, the first bevel gear is coaxially fixedly connected to the rotating rod, and the plurality of second bevel gears are coaxially fixedly connected to a plurality of threaded rods.

[0012] Furthermore, the reset member comprises a round tube, a slide is slidably connected inside the round tube, a reset spring is installed at the lower end of the slide, a traction rope is connected to the upper end of the slide, and the traction rope slides through the round tube at one end away from the slide.

[0013] Furthermore, the plurality of inner baffles are arranged rotationally symmetrically, the inner baffle is narrower on one side close to the central axis of the inner scraper ring, and the portion where the inner baffle is connected to the inner wall of the inner scraper ring is wider.

[0014] Further, the buffer mechanism includes a buffer groove provided on the outer scraping ring. A limiting rod is fixedly connected inside the buffer groove. A buffer block and a buffer spring are sleeved outside the limiting rod. Two ends of the buffer spring are respectively fixedly connected with the inner wall of the buffer groove and the buffer block. The buffer block is slidably connected with the limiting rod and the buffer groove. A deflecting plate is rotatably connected to the outside of the buffer block. One end of the deflecting plate away from the buffer block is rotatably connected to the lower end of the outer baffle.

[0015] Further, multiple said threaded rods are distributed in a circular array.

[0016] Further, the inner scraping ring and the outer scraping ring are arranged correspondingly.

[0017] Further, a valve is provided on the regulating pipe.

[0018] Compared with the prior art, the present invention provides a pre-condensation heat energy recovery device for a carbon dioxide energy storage system, having the following beneficial effects:

[0019] 1. For the pre-condensation heat energy recovery device for a carbon dioxide energy storage system, a cleaning mechanism is provided. The inner scraping ring moves under the action of the pressure difference of carbon dioxide to clean the inner side of the heat exchange pipe, and the outer scraping ring moves under the action of the pressure difference of the heat exchange medium to clean the outer side of the heat exchange pipe, ensuring the heat exchange efficiency of the heat exchange pipe.

[0020] 2. For the pre-condensation heat energy recovery device for a carbon dioxide energy storage system, a regulating mechanism is provided. The flow rate of carbon dioxide after heat exchange is regulated through the valve to keep the flow rate of carbon dioxide the same before and after heat exchange, maintaining the heat exchange efficiency. When there is a difference in the flow rate of carbon dioxide before and after, it indicates that the temperature difference of carbon dioxide before and after heat exchange has changed, that is, the heat exchange efficiency has decreased. At this time, it can be judged that scaling may occur on both sides of the heat exchange pipe. At this time, the pressure difference inside the heat exchange pipe is temporarily changed through the valve, so that the inner scraping ring cleans the inner wall of the heat exchange pipe, and the same operation is performed on the heat exchange medium, so that the outer scraping ring cleans the outer wall of the heat exchange pipe, thereby improving the heat exchange efficiency of carbon dioxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a front structural schematic diagram of the present invention;

[0022] Figure 2 is a side structural perspective view of the present invention;

[0023] Figure 3 is Figure 2 an enlarged view of part A in

[0024] Figure 4 is an internal structural perspective view of the heat exchange pipe in the present invention;

[0025] Figure 5It is a structural perspective view of the heat exchange pipeline in the present invention;

[0026] Figure 6 It is a schematic internal structure view of the heat exchange pipeline in the present invention;

[0027] Figure 7 It is a structural perspective view of the reset member in the present invention;

[0028] Figure 8 It is a structural perspective view of the adjustment mechanism in the present invention;

[0029] Figure 9 is Figure 8 the enlarged view of part B in

[0030] Figure 10 It is a top structural perspective view of the present invention;

[0031] Figure 11 It is a schematic connection structure view of the inner baffle and the circular ring in the present invention.

[0032] In the figure: 1. Heat exchange pipeline; 2. Inner annular groove; 3. Outer annular groove; 4. Reset member; 5. Inner scraping ring; 6. Inner baffle; 7. Circular tube; 8. Traction rope; 9. Circular ring; 10. Fan blade; 11. Pulling rope; 12. Annular groove; 13. Slide piece; 14. Reset spring; 15. Heat exchange box; 16. Discharge pipe; 17. Feed pipe; 18. Outer baffle; 19. Outer scraping ring; 20. Buffer block; 21. Limit rod; 22. Buffer spring; 23. Deflection plate; 24. Diverging pipe; 25. Adjustment pipeline; 26. Adjustment plate; 27. Buffer mechanism; 28. Threaded rod; 29. Fixed plate; 30. Threaded block; 31. Rotating rod; 32. Rotating handle; 33. Bevel gear set; 34. First bevel gear; 35. Second bevel gear; 36. Flow limiting plate; 37. Cavity; 38. Valve; 39. Adjustment mechanism; 40. Buffer groove; 41. Cleaning mechanism. Detailed implementation manners

[0033] 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.

[0034] As introduced in the background art, there are deficiencies in the prior art. To solve the above technical problems, the present application proposes a pre-condensation heat energy recovery device for a carbon dioxide energy storage system.

[0035] Such as Figure 1-11As shown in the figure, a pre-condensation heat recovery device for a carbon dioxide energy storage system includes a heat exchange pipe 1, with an inner annular groove 2 and an outer annular groove 3 provided on the inner and outer sides of the heat exchange pipe 1 respectively;

[0036] In order to maintain efficient heat exchange with carbon dioxide, a cleaning mechanism 41 is provided for recovering the heat energy of liquid carbon dioxide. The cleaning mechanism 41 includes an inner scraping ring 5, and the inner scraping ring 5 is slidably connected to the inner annular groove 2 through a plurality of reset components 4. It should be noted that one end of the traction rope 8 in the reset component 4 away from the sliding piece 13 is fixedly connected to the upper end of the inner scraping ring 5. The two ends of the circular tube 7 in the reset component 4 are respectively fixedly connected to the upper and lower sides of the inner annular groove 2. The lower end of the inner scraping ring 5 is rotatably connected to a circular ring 9. An annular groove 12 is provided at the upper end of the circular ring 9. A plurality of fan blades 10 are installed inside the circular ring 9. It should be noted that the plurality of fan blades 10 are arranged in an annular array inside the circular ring 9. A plurality of inner baffles 6 are rotatably connected to the inner side of the inner scraping ring 5. It should be noted that the plurality of inner baffles 6 are rotationally symmetrically arranged. The side of the inner baffle 6 close to the central axis of the inner scraping ring 5 is narrower, and the part of the inner baffle 6 connected to the inner wall of the inner scraping ring 5 is wider. The lower end of the inner baffle 6 is connected to a pull rope 11, and the pull rope 11 passes through the side wall of the inner scraping ring 5 and is connected to the annular groove 12. An outer scraping ring 19 is sleeved on the outer annular groove 3. It should be noted that the inner scraping ring 5 and the outer scraping ring 19 are correspondingly arranged. The outer scraping ring 19 is slidably connected to the outer annular groove 3 through a plurality of reset components 4. It should be noted that one end of the traction rope 8 in the reset component 4 away from the sliding piece 13 is fixedly connected to the upper end of the outer scraping ring 19. The two ends of the circular tube 7 in the reset component 4 are respectively fixedly connected to the upper and lower sides of the outer annular groove 3.

[0037] In the present invention, an outer baffle 18 is rotatably connected to the outside of the outer scraping ring 19, and a buffer mechanism 27 for buffering the outer baffle 18 is provided on the outer scraping ring 19. It should be noted that the buffer mechanism 27 includes a buffer groove 40 provided on the outer scraping ring 19. A limiting rod 21 is fixedly connected inside the buffer groove 40. A buffer block 20 and a buffer spring 22 are sleeved on the outside of the limiting rod 21. The two ends of the buffer spring 22 are respectively fixedly connected to the inner wall of the buffer groove 40 and the buffer block 20. The buffer block 20 is slidably connected to the limiting rod 21 and the buffer groove 40. A deflecting plate 23 is rotatably connected to the outside of the buffer block 20. One end of the deflecting plate 23 away from the buffer block 20 is rotatably connected to the lower end of the outer baffle 18. A heat exchange box 15 is fixedly sleeved on the outside of the heat exchange pipe 1. A discharge pipe 16 and a feed pipe 17 are installed on the heat exchange box 15.

[0038] In the present invention, the reset component 4 includes a circular tube 7. A sliding piece 13 is slidably connected inside the circular tube 7. A reset spring 14 is installed at the lower end of the sliding piece 13. One end of a traction rope 8 is connected to the upper end of the sliding piece 13, and the end of the traction rope 8 away from the sliding piece 13 slides through the circular tube 7.

[0039] In the present invention, when the carbon dioxide just flows from top to bottom, the carbon dioxide will impact the inner baffle plate 6, causing the inner baffle plate 6 to be subjected to a large pressure. On the one hand, the current pressure will drive the inner scraper ring 5 to move downward, and the inner side of the inner annular groove 2 can be scraped during the downward movement of the inner scraper ring 5, thereby cleaning the inner side of the heat exchange pipe 1. On the other hand, after the carbon dioxide flows downward through the center position of the multiple inner baffle plates 6, it will push the fan blades 10, and the fan blades 10 will drive the ring 9 to rotate. The ring 9 pulls the pull rope 11, and the pull rope 11 can retract the inner baffle plate 6 to increase the carbon dioxide flow until the pressure on the fan blade 10 reaches equilibrium. At this time, the pressure on the inner scraper ring 5 is The outer scraper ring 19 is pressed against the outer baffle plate 18 and the outer scraper ring 19 is pressed against the outer scraper ring 19. The outer scraper ring 19 is pressed against the outer scraper ring 18 and the outer scraper ring 19 is pressed against the outer scraper ring 19. The outer scraper ring 19 is pressed against the outer scraper ring 18 and the outer scraper ring 19 is pressed against the outer scraper ring 19. The outer scraper ring 19 is pressed against the outer scraper ring 18 and the outer scraper ring 19 is pressed against the outer scraper ring 19.

[0040] In the present invention, the lower end of the heat exchange pipe 1 is connected to a shunt pipe 24, and the lower end of the shunt pipe 24 is connected to a plurality of regulating pipes 25. Further, a valve 38 is provided on the regulating pipe 25, and a regulating mechanism 39 for limiting the flow of the regulating pipe 25 is provided in the shunt pipe 24. The regulating mechanism 39 includes an adjusting plate 26 fixedly connected to the bottom of the shunt pipe 24, and a cavity 37 is provided in the adjusting plate 26. A plurality of threaded rods 28 are rotatably connected in the cavity 37. The plurality of threaded rods 28 are distributed in a ring array, and a threaded block 30 is rotatably sleeved on the outside of the threaded rod 28. The threaded block 30 is fixedly connected to the inner wall of the cavity 37, and the threaded sleeve on the outside of the threaded rod 28 A fixed plate 29 is provided, which is slidably connected to the inner wall of the cavity 37, and the lower end of the fixed plate 29 is fixedly connected to a limiting plate 36, which slides through the adjustment plate 26. The shunt pipe 24 rotates through a rotating rod 31, and the lower end of the rotating rod 31 is coaxially fixedly connected to a rotating handle 32. The upper end of the rotating rod 31 is transmission-connected to the multiple threaded rods 28 through a bevel gear set 33. It should be noted that the bevel gear set 33 includes a first bevel gear 34 and a plurality of second bevel gears 35 that are meshed with each other. The first bevel gear 34 is coaxially fixedly connected to the rotating rod 31, and the plurality of second bevel gears 35 are coaxially fixedly connected to the multiple threaded rods 28.

[0041] By opening the valve 38 and rotating the handle 32, the handle 32 drives the rotating rod 31 to rotate. The rotating rod 31 drives multiple threaded rods 28 to rotate. The threaded rods 28 drive multiple fixing plates 29 to move. The fixing plates 29 drive the flow-limiting plate 36 to move. The flow-limiting plate 36 can adjust the width of the pipe orifice of the adjusting pipe 25, and thus adjust the flow rate of carbon dioxide after heat exchange, so that the flow rate of carbon dioxide before and after heat exchange is the same, thereby maintaining the heat exchange efficiency. When there is a difference in the carbon dioxide flow rate before and after, it indicates that the temperature difference of carbon dioxide before and after heat exchange has changed, that is, the heat exchange efficiency has decreased. At this time, it can be judged that scaling may occur on both sides of the heat exchange pipe 1. And by temporarily changing the pressure difference inside the heat exchange pipe 1 through the valve 38, the inner scraping ring 5 can clean the inner wall of the heat exchange pipe 1. The same operation can be carried out for the heat exchange medium, so that the outer scraping ring 19 can clean the outer wall of the heat exchange pipe 1, thereby improving the heat exchange efficiency of carbon dioxide.

[0042] Working principle:

[0043] When adjusting the carbon dioxide flow rate: By opening the valve 38 and rotating the handle 32, the handle 32 drives the rotating rod 31 to rotate. The rotating rod 31 drives multiple threaded rods 28 to rotate. The threaded rods 28 drive multiple fixing plates 29 to move. The fixing plates 29 drive the flow-limiting plate 36 to move. The flow-limiting plate 36 can adjust the width of the pipe orifice of the adjusting pipe 25, and thus adjust the flow rate of carbon dioxide after heat exchange, so that the flow rate of carbon dioxide before and after heat exchange is the same, so as to maintain the heat exchange efficiency. When there is a difference in the carbon dioxide flow rate before and after, it indicates that the temperature difference of carbon dioxide before and after heat exchange has changed, that is, the heat exchange efficiency has decreased. At this time, it can be judged that scaling may occur on both sides of the heat exchange pipe 1. At this time, by temporarily changing the pressure difference inside the heat exchange pipe 1 through the valve 38, the inner scraping ring 5 can clean the inner wall of the heat exchange pipe 1. The same operation can be carried out for the heat exchange medium, so that the outer scraping ring 19 can clean the outer wall of the heat exchange pipe 1;

[0044] The process of cleaning the heat exchange pipe 1 is as follows: When carbon dioxide just flows from top to bottom, the carbon dioxide will impact the inner baffle 6, causing the inner baffle 6 to receive a large pressure. On the one hand, the current pressure will drive the inner scraping ring 5 to move downward. During the downward movement of the inner scraping ring 5, it can scrape the inner side of the inner annular groove 2, thereby cleaning the inner side of the heat exchange pipe 1. On the other hand, after the carbon dioxide flows downward through the central positions of multiple inner baffles 6, it will push the fan blades 10. The fan blades 10 drive the circular ring 9 to rotate. The circular ring 9 pulls the pull rope 11, and the pull rope 11 can retract the inner baffle 6 to increase the carbon dioxide flow rate until the pressure received by the fan blades 10 reaches equilibrium. At this time, the pressure received by the inner scraping ring 5 becomes smaller, and it resets under the elastic force of the return spring 14, thus completing the cleaning of the inner wall of the heat exchange pipe 1;

[0045] When the heat exchange medium just flows upstream, the heat exchange medium impacts the outer baffle 18, causing the outer baffle 18 to be subjected to a relatively large pressure. On the one hand, the current pressure will drive the outer scraping ring 19 to move upward. During the upward movement of the outer scraping ring 19, the inner wall of the outer annular groove 3 can be scraped, thereby cleaning the outer side of the heat exchange pipe 1. On the other hand, the outer baffle 18 will deflect under the impact of the heat exchange medium until the pressure is balanced. At this time, the outer scraping ring 19 is reset under the elastic force of the return spring 14, thus completing the cleaning of the outer wall of the heat exchange pipe 1.

[0046] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-condensation heat recovery device for a carbon dioxide energy storage system, characterized in that: It comprises a heat exchange pipe (1), wherein the inner and outer sides of the heat exchange pipe (1) are respectively provided with an inner annular groove (2) and an outer annular groove (3); A cleaning mechanism (41) is used for recovering heat energy from liquid carbon dioxide, the cleaning mechanism (41) comprising an inner scraper ring (5), the inner scraper ring (5) being slidably connected to an inner annular groove (2) via a plurality of reset members (4), the lower end of the inner scraper ring (5) being rotatably connected to a circular ring (9), the upper end of the circular ring (9) being provided with an annular groove (12), a plurality of blades (10) being mounted on the inner side of the circular ring (9), a plurality of inner baffles (6) being rotatably connected to the inner side of the inner scraper ring (5), the lower end of the inner baffle (6) being connected to a pull rope (11), the pull rope (11) ) penetrates the side wall of the inner scraper ring (5) and is connected to the annular groove (12); an outer scraper ring (19) is sleeved on the outer annular groove (3); the outer scraper ring (19) is slidably connected to the outer annular groove (3) through a plurality of reset members (4); the outer scraper ring (19) is rotatably connected to an outer baffle plate (18) on the outside; a buffer mechanism (27) for buffering the outer baffle plate (18) is provided on the outer scraper ring (19); a heat exchange box (15) is fixedly sleeved on the outside of the heat exchange pipe (1); a discharge pipe (16) and a feed pipe (17) are installed on the heat exchange box (15).

2. A pre-condensation heat recovery device for a carbon dioxide energy storage system according to claim 1, characterized in that: The plurality of fan blades (10) are distributed in the circular ring (9) in an annular array.

3. The pre-condensation heat recovery device for a carbon dioxide energy storage system according to claim 1, characterized in that: The lower end of the heat exchange pipe (1) is connected to a flow divider (24), the lower end of the flow divider (24) is connected to a plurality of regulating pipes (25), the flow divider (24) is provided with a regulating mechanism (39) for limiting the flow of the regulating pipe (25), the regulating mechanism (39) comprising an regulating plate (26) fixedly connected to the bottom of the flow divider (24), the regulating plate (26) being provided with a cavity (37), the cavity (37) being rotatably connected to a plurality of threaded rods (28), the threaded rods (28) being rotatably sleeved with a threaded block (30) on the outside, the threaded block (30) ) is fixedly connected to the inner wall of the cavity (37); the threaded rod (28) is externally threadedly sleeved with a fixing plate (29); the fixing plate (29) is slidably connected to the inner wall of the cavity (37); the lower end of the fixing plate (29) is fixedly connected to a limiting plate (36); the limiting plate (36) is slidably penetrated through the adjustment plate (26); the flow dividing pipe (24) is rotatably penetrated through a rotating rod (31); the lower end of the rotating rod (31) is coaxially fixedly connected to a rotating handle (32); the upper end of the rotating rod (31) is transmission-connected to the plurality of threaded rods (28) via a bevel gear set (33).

4. The pre-condensation heat recovery device for a carbon dioxide energy storage system according to claim 3, characterized in that: The bevel gear set (33) comprises a first bevel gear (34) and a plurality of second bevel gears (35) meshing with each other, the first bevel gear (34) being coaxially fixedly connected to the rotating rod (31), and the plurality of second bevel gears (35) being coaxially fixedly connected to the plurality of threaded rods (28).

5. The pre-condensation heat recovery device for a carbon dioxide energy storage system according to claim 1, characterized in that: The reset member (4) comprises a round tube (7), a slide plate (13) is slidably connected inside the round tube (7), a reset spring (14) is installed at the lower end of the slide plate (13), a traction rope (8) is connected to the upper end of the slide plate (13), and the traction rope (8) is slidably penetrated through the round tube (7) at one end away from the slide plate (13).

6. The pre-condensation heat recovery device for a carbon dioxide energy storage system according to claim 1, characterized in that: The plurality of inner baffles (6) are arranged rotationally symmetrically; the inner baffle (6) is narrower on a side close to the central axis of the inner scraper ring (5), and the portion where the inner baffle (6) is connected to the inner wall of the inner scraper ring (5) is wider.

7. The pre-condensation heat recovery device for a carbon dioxide energy storage system according to claim 1, characterized in that: The buffer mechanism (27) comprises a buffer groove (40) arranged on the outer scraper ring (19), a limit rod (21) being fixedly connected inside the buffer groove (40), a buffer block (20) and a buffer spring (22) being sleeved outside the limit rod (21), two ends of the buffer spring (22) being respectively fixedly connected to the inner wall of the buffer groove (40) and the buffer block (20), the buffer block (20) being slidably connected to the limit rod (21) and the buffer groove (40), a deflection plate (23) being rotatably connected outside the buffer block (20), and an end of the deflection plate (23) away from the buffer block (20) being rotatably connected to the lower end of the outer baffle plate (18).

8. The pre-condensation heat recovery device for a carbon dioxide energy storage system according to claim 3, characterized in that: The plurality of threaded rods (28) are distributed in a ring array.

9. The pre-condensation heat recovery device for a carbon dioxide energy storage system according to claim 1, characterized in that: The inner scraper ring (5) and the outer scraper ring (19) are arranged correspondingly.

10. The pre-condensation heat energy recovery device for a carbon dioxide energy storage system according to claim 3, characterized in that: The regulating pipeline (25) is provided with a valve (38).

Images