A cooling device for a flue

Abstract

This application discloses a cooling device for a flue, relating to the field of cooling. The cooling device includes an outer pipe, branch pipes, water pipes, a rainwater collection box, and a controller. Multiple branch pipes are disposed inside the outer pipe and arranged parallel to each other along the axial direction of the outer pipe. The rainwater collection box is fixedly disposed at the end of the outer pipe furthest from the high-temperature flue gas outlet. Each branch pipe includes a first inner pipe and a second inner pipe. The first inner pipe is disposed inside the second inner pipe, and a first gap is formed between the outer wall surface of the first inner pipe and the inner wall surface of the second inner pipe. Multiple water pipes are circumferentially disposed on the outer wall of the outer pipe. The water pipes are connected to the rainwater collection box and pass through the outer pipe and the second inner pipe into the first gap; each water pipe corresponds one-to-one with a branch pipe. Multiple temperature sensors are disposed on the inner wall surface of the first inner pipe, and an electromagnetic water valve is disposed on the side of the water pipe closest to the rainwater collection box. Therefore, the cooling device for the flue of this application improves the cooling efficiency of high-temperature flue gas and extends the service life of the flue.

Description

Technical Field

[0001] This application relates to the field of cooling, and more particularly to a cooling device for a flue. Background Technology

[0002] A gas turbine is an internal combustion engine that uses a continuously flowing gas as its working fluid to drive a high-speed rotating impeller, converting the energy of fuel into useful work. It is a type of rotating impeller-type thermal engine. During operation, the exhaust gas from a gas turbine is very hot.

[0003] Currently, water cooling is the primary method for cooling flue gas duct walls. Water cooling involves spraying cooling water onto the outer surface of the flue to achieve temperature reduction. However, with increasing heat load and exhaust temperature from gas turbines, simply spraying cooling water onto the outer surface is insufficient for rapid flue gas cooling. If the flue gas temperature is too high and cooling is not timely, the flue gas duct wall may burn through, posing a safety hazard. Summary of the Invention

[0004] This application provides a cooling device for flues, which solves the technical problem of poor flue cooling effect in the prior art.

[0005] This application provides a cooling device for a flue, including an outer pipe, branch pipes, water pipes, a rainwater collection box, and a controller. Multiple branch pipes are disposed inside the outer pipe and arranged in parallel along the axial direction of the outer pipe. The rainwater collection box is fixedly disposed at the end of the outer pipe away from the high-temperature flue gas outlet. Each branch pipe includes a first inner pipe and a second inner pipe. The first inner pipe is disposed inside the second inner pipe, and a first gap is formed between the outer wall surface of the first inner pipe and the inner wall surface of the second inner pipe. Multiple water pipes are circumferentially disposed on the outer wall of the outer pipe. The water pipes communicate with the rainwater collection box and pass through the outer pipe and the second inner pipe into the first gap. Each water pipe corresponds one-to-one with a branch pipe. Multiple temperature sensors are disposed on the inner wall surface of the first inner pipe. An electromagnetic water valve is disposed on the side of the water pipe closest to the rainwater collection box. The controller is configured to send a first flow rate adjustment command to the electromagnetic water valve by analyzing the relationship between the temperature sensors and a preset temperature.

[0006] In one possible implementation, the water pipe includes a main water pipe and branch water pipes; a plurality of main water pipes are arranged circumferentially on the outer wall of the outer pipe; the end of the main water pipe away from the outlet of the high-temperature flue gas is connected to the rainwater collection box; one end of the plurality of branch water pipes is connected to the main water pipe, and the other end of the plurality of branch water pipes passes through the outer pipe and the second inner pipe and enters the first gap; the electromagnetic water valve is disposed on the side of the main water pipe near the rainwater collection box.

[0007] In one possible implementation, each of the water branch pipes is provided with an electromagnetic water valve on the side closest to the water main pipe; the controller is configured to send a second flow regulation command to the electromagnetic water valve by analyzing the relationship between the temperature sensor and a preset temperature.

[0008] In one possible implementation, the water pipe further includes a water softener; multiple water softeners are disposed on the water main pipe and located between the electromagnetic water valve and the rainwater collection box.

[0009] In one possible implementation, the inner wall and outer wall of the first inner tube are respectively provided with a first water ripple track and a second water ripple track.

[0010] In one possible implementation, the cooling device for the flue also includes air ducts; a plurality of air ducts are arranged circumferentially on the outer wall of the outer pipe; the air ducts pass through the outer pipe and the second inner pipe into the first gap, and each air duct corresponds one-to-one with the branch pipe; a cooler is provided at the end of the air duct away from the high-temperature flue gas outlet, and an electromagnetic valve is provided on the side of the air duct near the cooler; the controller is further configured to send a third flow rate adjustment command to the cooler and the electromagnetic valve by analyzing the relationship between the temperature sensor and the preset temperature.

[0011] In one possible implementation, the duct includes a main duct and branch ducts; the main duct is circumferentially disposed on the outer wall of the outer duct; one end of a plurality of branch ducts is connected to the side wall of the main duct, and the other ends of the plurality of branch ducts away from the main duct pass through the outer duct and the second inner duct into the first gap; the air cooler is disposed at the end of the main duct away from the high-temperature flue gas outlet; and the electromagnetic air valve is disposed on the side of the main duct near the air cooler.

[0012] In one possible implementation, an electromagnetic air distribution valve is provided on the side of the branch duct near the main duct; the controller is also configured to send a fourth flow regulation command to the electromagnetic air distribution valve by analyzing the relationship between the temperature sensor and a preset temperature.

[0013] In one possible implementation, the cooling device for the flue also includes a phase change material; the space formed by the inner wall of the outer pipe and the outer wall of the branch pipe is a second gap, and the phase change material is embedded in the second gap.

[0014] In one possible implementation, the cooling device for the flue also includes dovetail guide vanes; multiple dovetail guide vanes are provided on the inner wall surface of the outer tube and the outer wall surface of the branch tube, and each dovetail guide vane is distributed along the same circumferential direction.

[0015] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0016] This application embodiment provides a flue cooling device including an outer pipe, branch pipes, water pipes, a rainwater collection box, and a controller. High-temperature flue gas is introduced into each branch pipe for dispersed cooling, improving the cooling efficiency. The rainwater collection box collects rainwater and introduces it into a first gap through the water pipes, forming a liquid film on the outer wall of the first inner pipe. This enhances heat exchange with the inner pipe wall, absorbing and transferring the temperature of the high-temperature flue gas, thus improving the cooling effect. The controller analyzes the relationship between the temperature sensor and a preset temperature and sends a first flow rate adjustment command to the electromagnetic water valve. The controller can adjust the water flow through the electromagnetic water valve, avoiding resource waste. Therefore, the flue cooling device of this application embodiment utilizes multi-pipe pressurization to ensure the safety of the cooling system during operation, improves the cooling efficiency of the flue, has low cooling costs, and extends the service life of the flue. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A perspective structural diagram of a cooling device for a flue provided in an embodiment of this application;

[0019] Figure 2a This is a schematic diagram of the structure without phase change material provided in the embodiments of this application;

[0020] Figure 2b This is a schematic diagram of a structure configured with phase change material provided in an embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the structure of the rainwater collection box provided in the embodiments of this application;

[0022] Figure 4 for Figure 1 A magnified view of a portion at point A;

[0023] Figure 5 This is a schematic diagram of the structure of a water pipe provided in an embodiment of this application;

[0024] Figure 6 This is a schematic diagram of the structure of the air duct provided in the embodiments of this application;

[0025] Figure 7 The control principle diagram of the controller provided in the embodiment of this application.

[0026] Reference numerals: 100-Outer pipe; 200-Branch pipe; 210-First inner pipe; 211-First water ripple track; 212-Second water ripple track; 220-Second inner pipe; 221-Third water ripple track; 230-First gap; 240-Temperature sensor; 300-Water pipe; 310-Water main pipe; 320-Water branch pipe; 330-Water softener; 340-Solenoid water valve; 350-Solenoid water valve; 400-Air duct; 410-Air main pipe; 420-Air branch pipe; 430-Air cooler; 440-Solenoid air valve; 450-Solenoid air branch valve; 500-Rainwater collection box; 600-Phase change material; 700-Second gap; 800-Controller; 900-Dovetail guide plate. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0029] The cooling device for the flue gas duct provided in this application embodiment is as follows: Figures 1 to 7 As shown. Figure 1 This is a perspective structural diagram of the cooling device for the flue provided in an embodiment of this application. Figure 2a This is a schematic diagram of a structure without phase change material provided in an embodiment of this application. Figure 2b This is a schematic diagram of a structure configured with phase change material provided in an embodiment of this application. Figure 3 This is a schematic diagram of the structure of the rainwater collection box provided in an embodiment of this application. Figure 4 for Figure 1 A magnified view of a portion at point A. Figure 5 This is a schematic diagram of the water pipe structure provided in an embodiment of this application. Figure 6 This is a schematic diagram of the structure of the air duct provided in the embodiment of this application. Figure 7 The control principle diagram of the controller provided in the embodiment of this application.

[0030] like Figure 1 As shown, the flue cooling device provided in this embodiment includes an outer pipe 100, branch pipes 200, water pipes 300, a rainwater collection box 500, and a controller 800. Multiple branch pipes 200 are disposed inside the outer pipe 100 and arranged in parallel along the axial direction of the outer pipe 100. This embodiment introduces high-temperature flue gas into each branch pipe 200, which can disperse the cooling and enhance the cooling effect of the high-temperature flue gas.

[0031] Continue to refer to Figure 1 As shown, the rainwater collection box 500 is fixedly installed at the end of the outer pipe 100 away from the high-temperature flue gas outlet. This embodiment of the application improves energy efficiency and carbon reduction by using the rainwater collection box to collect rainwater for cooling the high-temperature flue gas.

[0032] Specifically, long-distance flues require a relatively large amount of water, and the rainwater collection box 500 is connected to a water pump to supply sufficient water to ensure the normal operation of the equipment.

[0033] like Figure 4 As shown, the branch pipe 200 includes a first inner pipe 210 and a second inner pipe 220. The first inner pipe 210 is disposed inside the second inner pipe 220, and a first gap 230 is formed between the outer wall surface of the first inner pipe 210 and the inner wall surface of the second inner pipe 220. A plurality of water pipes 300 are circumferentially disposed on the outer wall of the outer pipe 100. The water pipes 300 are connected to the rainwater collection box 500, and the water pipes 300 pass through the outer pipe 100 and the second inner pipe 220 into the first gap 230. Each water pipe 300 corresponds one-to-one with the branch pipe 200. For example, Figure 1 and Figure 2b The outer pipe 100 has five branch pipes 200 inside, and each branch pipe 200 is equipped with a water pipe 300. The five water pipes 300 supply water to the five branch pipes 200, enhancing their cooling effect. Of course, this application is not limited to five branch pipes 200; the number of branch pipes 200 can be set according to needs, such as four or six. The more branch pipes 200 there are, the more water pipes 300 there will be, and the cooling efficiency of the high-temperature flue gas will also increase. Rainwater is introduced into the first gap 230 through the rainwater collection box 500. The rainwater forms a liquid film on the outer wall surface of the first inner pipe 210, thereby absorbing and transferring the temperature of the high-temperature flue gas.

[0034] Furthermore, the first inner tube 210 and the second inner tube 220 are concentric cylinders, which can ensure uniform heat exchange on the wall of the first inner tube 210.

[0035] In one implementation of this application, multiple temperature sensors 240 are provided on the inner wall of the first inner pipe 210, and an electromagnetic water valve 340 is provided on the side of the water pipe 300 near the rainwater collection box 500. The controller 800 is configured to send a first flow regulation command to the electromagnetic water valve 340 by analyzing the relationship between the temperature sensors 240 and a preset temperature. Both the temperature sensors 240 and the electromagnetic water valve 340 are electrically connected to the controller 800. Multiple temperature sensors 240 are disposed in the first inner pipe 210 of multiple branch pipes 200. The temperature sensors 240 measure the temperature of the high-temperature flue gas in the first inner pipe 210 in real time and transmit the current temperature to the controller 800. The controller 800 calculates the current required water volume and sends the first flow regulation command to the electromagnetic water valve 340, thereby controlling the opening degree of the electromagnetic water valve 340. This ensures the cooling effect while avoiding resource waste and achieving energy conservation and environmental protection.

[0036] Exemplary, embodiments of this application in Figure 2a and Figure 5 The document provides a specific structural form of the water pipe 300. The water pipe 300 includes a main water pipe 310 and branch water pipes 320. Multiple main water pipes 310 are circumferentially arranged on the outer wall of the outer pipe 100. The end of the main water pipe 310 away from the outlet of the high-temperature flue gas is connected to the rainwater collection box 500. One end of each branch water pipe 320 is connected to the main water pipe 310, and the other end of each branch water pipe 320 passes through the outer pipe 100 and the second inner pipe 220 into the first gap 230. An electromagnetic water valve 340 is located on the side of the main water pipe 310 near the rainwater collection box 500. Specifically, the main water pipe 310 and branch water pipes 320 can be made of steel and galvanized to improve their corrosion resistance. The outer surfaces of the main water pipe 310 and branch water pipes 320 should be free from defects such as cracks, flattening, and severe rust. The connection between the water main pipe 310 and the water branch pipe 320 is achieved through expansion jointing. This expansion jointing primarily reduces the mutual influence between the water main pipe 310 and the water branch pipe 320, and reduces or eliminates the effects of various stresses. However, the connection between the water main pipe 310 and the water branch pipe 320 is not limited to expansion jointing; they can also be connected by expansion welding. Using a combination of expansion and welding not only improves the fatigue resistance of the connection but also eliminates stress corrosion and crevice corrosion, thus extending their service life.

[0037] like Figure 5As shown, each water branch pipe 320 is equipped with an electromagnetic water valve 350 on the side near the water main pipe 310. The controller 800 is configured to send a second flow regulation command to the electromagnetic water valve 350 by analyzing the relationship between the temperature sensor 240 and a preset temperature. The electromagnetic water valve 350 is electrically connected to the controller 800. The temperature sensor 240 measures the temperature of the flue gas in the first inner pipe 210 in real time and transmits the current temperature to the controller 800. The controller 800 calculates the current required water volume and sends the second flow regulation command to the electromagnetic water valve 350, thereby controlling the opening degree of the electromagnetic water valve 350. When the temperature of the flue gas in the first inner pipe 210 is not very high, the controller 800 can partially open the electromagnetic water valve 350. This embodiment of the application can avoid resource waste and enhance the cooling effect of high-temperature flue gas.

[0038] like Figure 1 As shown, the water pipe 300 also includes a water softener 330. Multiple water softeners 330 are installed in the water main pipe 310, located between the electromagnetic water valve 340 and the rainwater collection box 500. Each water main pipe 310 is equipped with a water softener 330. Water hardness is mainly composed of calcium and magnesium ions. When hard water passes through the resin layer of the water softener 330, the calcium and magnesium ions in the water are adsorbed by the resin, while sodium ions are released, resulting in softened water from the water softener 330, which has had hardness ions removed. Softened water fundamentally eliminates limescale, preventing scale and blockage in the water pipe 300, ensuring safe operation of the equipment, and saving costs. Simultaneously, the water softener 330 in this embodiment can prevent scale formation on the outer walls of the multiple first inner pipes 210 and the inner walls of the multiple second inner pipes 220, thereby extending the service life of the flue pipe.

[0039] like Figure 4 As shown, the inner and outer walls of the first inner pipe 210 are respectively provided with a first water ripple track 211 and a second water ripple track 212. The first water ripple track 211 can guide the high-temperature flue gas to form a swirling flow, promoting the cooling efficiency of the high-temperature flue gas. At the same time, the spiral progression of the flue gas temperature is uniform, which can effectively improve the cooling effect and protect the flue pipe, preventing pipe bursting and damage. The second water ripple track 212 allows rainwater to stay in the first gap 230 for a longer time, promoting sufficient heat exchange between the water flow and the pipe wall of the first inner pipe 210, enhancing the cooling effect of the wall surface and the high-temperature flue gas.

[0040] like Figure 1As shown, the cooling device for the flue also includes air ducts 400. Multiple air ducts 400 are arranged circumferentially on the outer wall of the outer pipe 100. The air ducts 400 pass through the outer pipe 100 and the second inner pipe 220 into the first gap 230, and each air duct 400 corresponds one-to-one with a branch pipe 200. In this embodiment, there are five branch pipes 200, and each of the five branch pipes 200 is equipped with one of the five air ducts 400. Each air duct 400 is connected to a branch pipe 200 that delivers cold air, enhancing the cooling effect of the flue.

[0041] like Figure 6 As shown, a cooler 430 is installed at the end of the duct 400 furthest from the high-temperature flue gas outlet. The cooler 430 injects cool air into the first gap 230 through the duct 400, increasing the cooling effect on the high-temperature flue gas. In this embodiment, the power of the cooler 430 is reduced by utilizing multiple inlets, and the cooling effect facilitates the dissipation of heat.

[0042] An electromagnetic damper 440 is installed on the side of the duct 400 near the air cooler 430. The controller 800 is also configured to send a third flow rate adjustment command to the air cooler 430 and the electromagnetic damper 440 by analyzing the relationship between the temperature sensor 240 and the preset temperature. Both the air cooler 430 and the electromagnetic damper 440 are electrically connected to the controller 800. The temperature sensor 240 measures the temperature of the high-temperature flue gas in the first inner duct 210 in real time and transmits the current temperature to the controller 800. The controller 800 calculates the required airflow and sends a third flow rate command to the electromagnetic damper 440 and the air cooler 430, thereby controlling the speed of the air cooler 430 and the opening degree of the electromagnetic damper 440, avoiding resource waste and achieving energy saving and environmental protection.

[0043] Furthermore, a third water-ripple track 221 is provided on the inner wall surface of the second inner tube 220. The third water-ripple track 221 promotes the internal swirling motion of the cold airflow, thereby carrying away more heat from the high-temperature flue gas.

[0044] Exemplary, embodiments of this application in Figure 2a and Figure 6 The document provides a specific structural form of the duct 400. The duct 400 includes a main duct 410 and branch ducts 420. The main duct 410 is circumferentially disposed on the outer wall of the outer duct 100. One end of each branch duct 420 is connected to the side wall of the main duct 410, and the other ends of each branch duct 420, away from the main duct 410, pass through the outer duct 100 and the second inner duct 220 and enter the first gap 230. A cooler 430 is disposed at the end of the main duct 410 away from the high-temperature flue gas outlet, and an electromagnetic damper 440 is disposed on the side of the main duct 410 near the cooler 430.

[0045] Specifically, the main duct 410 and branch duct 420 can be made of steel and galvanized to improve their corrosion resistance. The outer surfaces of the main duct 410 and branch duct 420 should be free from defects such as cracks, flattening, and severe rust. The connection between the main duct 410 and branch duct 420 is achieved through expansion jointing. Expansion jointing primarily reduces the mutual influence between the main duct 410 and branch duct 420, reducing or eliminating the effects of various stresses. However, the connection between the main duct 410 and branch duct 420 is not limited to expansion jointing; expansion welding can also be used. Using a combination of expansion welding and expansion welding not only improves the fatigue resistance of the connection but also eliminates stress corrosion and crevice corrosion, extending their service life.

[0046] like Figure 6 As shown, an electromagnetic air distribution valve 450 is installed on the side of the branch duct 420 near the main duct 410. The controller 800 is also configured to send a fourth flow rate adjustment command to the electromagnetic air distribution valve 450 by analyzing the relationship between the temperature sensor 240 and a preset temperature. The electromagnetic air distribution valve 450 is electrically connected to the controller 800. The temperature sensor 240 measures the temperature of the flue gas in the first inner duct 210 in real time and transmits the current temperature to the controller 800. The controller 800 calculates the required airflow and sends the fourth flow rate command to the electromagnetic air distribution valve 450, thereby controlling the opening degree of the electromagnetic air distribution valve 450. When the flue gas temperature in the first inner duct 210 is not very high, the controller 800 can partially open the electromagnetic air distribution valve 450, saving power and promoting environmental friendliness.

[0047] In one implementation of this application, the branch pipe 420 is an annular pipe, and the outer wall of the outer pipe 100 is provided with multiple annular pipes. The annular pipes are concentric with the outer pipe 100 and are arranged on the outer pipe 100 at fixed intervals. Each annular pipe passes through the outer pipe 100 and the second inner pipe 220 and enters the first gap 230. One end of the drying pipe 410 is connected to the air cooler 430, and the other end of the drying pipe 410 is embedded from the end face of each annular pipe, delivering cold airflow to the first gap 230. The drying pipe 410 obliquely cuts the cold airflow along a spiral line into the first gap 230 through the external environment and air pressure difference, supplementing the power and cooling capacity of the high-temperature flue gas and promoting its swirling stroke.

[0048] like Figure 2bAs shown, the cooling device for the flue also includes a phase change material 600. The space formed by the inner wall of the outer pipe 100 and the outer wall of the branch pipe 200 is a second gap 700, in which the phase change material 600 is embedded. The phase change material 600 fills the second gap 700 as a backup plan. If the flue heats up rapidly or the water pipe 300 malfunctions, resulting in untimely cooling, the phase change material 600 will melt and automatically absorb the heat dissipated by the high-temperature flue gas, preventing the flue from bursting and being damaged, and also reserving sufficient alarm and repair time in case of emergency.

[0049] Specifically, the phase change material 600 is a honeycomb metal foam phase change capsule. The honeycomb metal foam phase change capsule has high cooling efficiency, can store energy while ensuring system safety in case of accidents, and provides buffer time and continuous operation.

[0050] like Figure 2a and Figure 2b As shown, the flue cooling device also includes dovetail guide vanes 900. Multiple dovetail guide vanes 900 are provided on the inner wall of the outer pipe 100 and the outer wall of the branch pipe 200, with each dovetail guide vane 900 distributed along the same circumferential direction. The dovetail guide vanes 900 on the outer wall of the second inner pipe 220 and the inner wall of the outer pipe 100 facilitate the timely transfer of heat to the phase change material 600 in the event of an accident in the water pipe 300 or a rapid increase in flue temperature, ensuring the safe operation of the flue cooling device.

[0051] In one implementation of this application, the rainwater collection box 500 is a gradually expanding circular ring, which can collect more rainwater and is environmentally friendly and energy-saving.

[0052] This application fully utilizes multi-tube pressurization to accelerate the movement of high-temperature gas. Simultaneously, the spiral-progressive flue gas temperature is uniform, effectively improving the cooling effect of the flue and protecting the flue pipe. Liquid film cooling combined with air blowing cooling, utilizing the flue gas swirling in the first inner pipe 210 and the cold air swirling in the second inner pipe 220, accelerates the rapid heat exchange between the inner wall of the first inner pipe 210 and the liquid film adhering to its outer wall, promoting rapid cooling, optimizing the cooling strategy distribution, and improving the cooling efficiency of the high-temperature flue gas. This application is applicable to various cooling channels.

[0053] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0054] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A cooling device for a flue, characterized in that, Includes an outer pipe (100), a branch pipe (200), a water pipe (300), a rainwater collection box (500), and a controller (800); Multiple branch pipes (200) are disposed inside the outer pipe (100) and arranged in parallel along the axial direction of the outer pipe (100); the rainwater collection box (500) is fixedly disposed at the end of the outer pipe (100) away from the high-temperature flue gas outlet; The branch tube (200) includes a first inner tube (210) and a second inner tube (220); The first inner tube (210) is disposed inside the second inner tube (220), and a first gap (230) is formed between the outer wall surface of the first inner tube (210) and the inner wall surface of the second inner tube (220). Multiple water pipes (300) are arranged circumferentially on the outer wall of the outer pipe (100); the water pipes (300) are connected to the rainwater collection box (500), and the water pipes (300) pass through the outer pipe (100) and the second inner pipe (220) to enter the first gap (230), and each water pipe (300) corresponds to a branch pipe (200); The inner wall of the first inner tube (210) is provided with a plurality of temperature sensors (240), and an electromagnetic water valve (340) is provided on the side of the water pipe (300) near the rainwater collection box (500). The controller (800) is configured to send a first flow rate adjustment command to the electromagnetic water valve (340) by analyzing the relationship between the temperature sensors (240) and the preset temperature. The water pipe (300) includes a main water pipe (310) and a branch water pipe (320); Multiple water mains (310) are arranged circumferentially on the outer wall of the outer pipe (100); the end of the water main (310) away from the outlet of the high-temperature flue gas is connected to the rainwater collection box (500). One end of each of the multiple water branch pipes (320) is connected to the water main pipe (310), and the other end of each of the multiple water branch pipes (320) passes through the outer pipe (100) and the second inner pipe (220) and enters the first gap (230). The electromagnetic water valve (340) is located on the side of the water main pipe (310) near the rainwater collection box (500); Each of the water branch pipes (320) is provided with an electromagnetic water valve (350) on the side near the water main pipe (310). The controller (800) is configured to send a second flow regulation command to the electromagnetic water valve (350) by analyzing the relationship between the temperature sensor (240) and a preset temperature. The inner wall and outer wall of the first inner tube (210) are respectively provided with a first water ripple track (211) and a second water ripple track (212). It also includes a swallowtail guide sheet (900); The inner wall surface of the outer tube (100) and the outer wall surface of the branch tube (200) are provided with a plurality of dovetail guide plates (900), and each dovetail guide plate (900) is distributed along the same circumferential direction; It also includes air ducts (400); Multiple air ducts (400) are arranged circumferentially on the outer wall of the outer pipe (100); the air duct (400) passes through the outer pipe (100) and the second inner pipe (220) and enters the first gap (230); each air duct (400) corresponds to each branch pipe (200); A cooler (430) is provided at the end of the duct (400) away from the high-temperature flue gas outlet, and an electromagnetic valve (440) is provided on the side of the duct (400) near the cooler (430). The controller (800) is also configured to send a third flow rate adjustment command to the cooler (430) and the electromagnetic valve (440) by analyzing the relationship between the temperature sensor (240) and the preset temperature. The air duct (400) includes a main air duct (410) and a branch air duct (420). The air drying pipe (410) is circumferentially disposed on the outer wall of the outer pipe (100); One end of each of the multiple branch pipes (420) is connected to the side wall of the main pipe (410), and the other end of each of the multiple branch pipes (420) away from the main pipe (410) passes through the outer pipe (100) and the second inner pipe (220) and enters the first gap (230). The air cooler is located at the end of the air drying pipe (410) away from the high-temperature flue gas outlet; The electromagnetic air valve is located on the side of the air duct (410) near the air cooler (430); It also includes phase change materials (600); The space formed by the inner wall of the outer tube (100) and the outer wall of the branch tube (200) is a second gap (700), and the phase change material (600) is embedded in the second gap (700).

2. The cooling device for the flue according to claim 1, characterized in that, The water pipe (300) also includes a water softener (330); Multiple water softeners (330) are installed on the water main (310) and located between the electromagnetic water valve (340) and the rainwater collection box (500).

3. The cooling device for the flue according to claim 1, characterized in that, An electromagnetic air distribution valve (450) is provided on the side of the air branch pipe (420) near the air main pipe (410). The controller (800) is also configured to send a fourth flow regulation command to the electromagnetic air distribution valve (450) by analyzing the relationship between the temperature sensor (240) and a preset temperature.

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