Flue gas waste heat recovery heat transfer tube bundle

Abstract

The utility model discloses a flue gas waste heat recovery heat transfer tube bundle, and relates to the technical field of heat transfer tube bundles, the flue gas waste heat recovery heat transfer tube bundle comprises an outer shell and a square shell, a square plate is movably arranged on the top inner wall of the outer shell, through holes are formed in the square plate in an array penetrating mode, cleaning brushes are arranged in the through holes, and a spiral ring is fixedly arranged in the middle of the square plate. A screw rod is in threaded connection with the interior of the screw ring, a servo motor is fixedly arranged at the bottom of the square shell, a cleaning brush is arranged, the servo motor is controlled to operate to drive the screw rod to rotate, and the effect that the square plate moves downwards is achieved through threaded connection of the fixedly-arranged screw ring and the screw rod; when the square plate moves downwards, the cleaning brush can clean and scrape off dirt on the heat exchange tube, the cleaning effect on the heat exchange tube is achieved, and the problems that flue gas contains various solid particles and chemical substances, scaling and pollution can be generated on the surface of the tube bundle, and the heat transfer efficiency of the tube bundle is reduced are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat transfer tube bundles, in particular to a flue gas waste heat recovery heat transfer tube bundle. Background Art

[0002] Heat transfer tube bundles refer to equipment that utilizes waste heat from flue gas generated in industrial production and recycles it through heat transfer tube bundles. In the industrial production process, many processes generate a large amount of heat, a large part of which is discharged into the atmosphere in the form of flue gas, causing energy waste and environmental pollution. The main function of the flue gas waste heat recovery heat transfer tube bundle is to transfer the waste heat in the flue gas to another medium, such as water or air, to supply it for heating or other needs in the production process. Flue gas waste heat recovery heat transfer tube bundles are usually used in combination with other systems, such as boiler systems, power generation systems or industrial production systems. By recovering waste heat from flue gas, these systems can significantly reduce energy consumption, reduce production costs, and reduce negative impacts on the environment.

[0003] For example, the application number CN218916013U announces a flue gas waste heat recovery device, including a box body and a heat exchange tube group, the heat exchange tube group is arranged in the box body; the heat exchange tube group includes an upper tube sheet, a heat exchange tube bundle and a lower tube sheet, the upper tube sheet is arranged at the upper end of the heat exchange tube bundle, and the lower tube sheet is arranged at the lower end of the heat exchange tube bundle; the lower end of the box body is provided with a lower head connected to the lower tube sheet, the lower head is provided with a cold water inlet and a hot water outlet, and the upper end of the box body is provided with an upper head connected to the upper tube sheet; the upper part of the box body is provided with a flue gas inlet, and the lower part of the box body is provided with a flue gas outlet and a ash cleaning port; the heat exchange tube bundle is a spiral twisted flat tube bundle. By adopting a spiral twisted flat tube bundle as a heat exchange tube bundle, no baffle is provided in the shell side, the fluid inside and outside the tube is purely countercurrent heat exchange, the heat exchange temperature difference is large, and at the same time, the fluid inside and outside the tube generates a spiral flow to strengthen the medium inside and outside the tube on both sides, thereby increasing the total heat transfer coefficient of the heat exchange equipment, greatly recovering the flue gas waste heat, and reducing the equipment volume and production cost at the same time.

[0004] However, this flue gas waste heat recovery device does not take into account that the flue gas may contain various solid particles and chemical substances, which may cause scaling and contamination on the surface of the heat transfer tube bundle, resulting in a problem of reducing the heat transfer efficiency of the tube bundle.

[0005] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a flue gas waste heat recovery heat transfer tube bundle is proposed. Utility Model Content

[0006] The utility model aims to provide a flue gas waste heat recovery heat transfer tube bundle to solve the problem mentioned in the above background technology that the flue gas contains various solid particles and chemical substances, which will cause scaling and pollution on the surface of the tube bundle, resulting in reduced heat transfer efficiency of the tube bundle.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flue gas waste heat recovery heat transfer tube bundle, comprising an outer shell and a square shell, the bottom of the outer shell is provided with a square shell, a plurality of groups of heat exchange tubes are arranged in an array in the outer shell, a square plate is movably arranged at the top inner wall of the outer shell, through holes are arranged in an array on the square plate, a cleaning brush is arranged in the through hole, a spiral ring is fixedly arranged in the middle part of the square plate, a screw is connected with a screw rod in the inner thread of the spiral ring, a bearing is arranged on the top of the screw rod, and the bearing is engaged with the top inner wall of the outer shell;

[0008] A servo motor is fixedly arranged at the bottom of the square shell, and an output end of the servo motor is connected to the screw rod.

[0009] Furthermore, a smoke inlet is provided at one end of the shell, and a smoke outlet is provided at the other end of the shell.

[0010] Furthermore, a water tank is provided on the shell, and a heat exchange pipe runs through the interior of the water tank.

[0011] Furthermore, a fixing block is fixedly provided on the outer surface of the shell, and the top of the fixing block is fixedly connected to the water tank.

[0012] Furthermore, a water inlet is provided through one side of the water tank, and a water outlet is provided through the other side of the water tank.

[0013] Furthermore, a conical plate is fixedly arranged in the square shell, and two groups of drawers are movably arranged in the square shell, and the two groups of drawers are movably located on both sides of the conical plate.

[0014] Furthermore, a handle is fixedly provided on one side of the drawer.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model provides a cleaning brush. When the flue gas waste heat recovery heat transfer tube bundle is used, the through hole and the heat exchange tube are symmetrically penetrated, so that the square plate can be movably fitted with the top inner wall of the shell. The bearing is used to provide a smooth rotation of the screw. The screw can be driven to rotate by controlling the operation of the servo motor. The threaded connection between the fixed spiral ring and the screw can form an effect of movable downward movement of the square plate. The cleaning brush in the through hole contacts the outer surface of the heat exchange tube. When the square plate moves downward, the cleaning brush can scrape off the dirt on the heat exchange tube, forming a cleaning effect on the heat exchange tube, effectively solving the problem that various solid particles and chemicals in the flue gas will cause scaling and pollution on the surface of the tube bundle, thereby reducing the heat transfer efficiency of the tube bundle.

[0017] 2. The utility model uses the setting of the drawer, and the scraped dirt will fall into the square shell. Then the conical plate can disperse the dirt to both sides and fall into the inside of the drawer to form a collection effect. Then the staff pulls the handle to pull out the drawer to deal with the scraped dirt, avoiding the problem of dirt accumulation blocking the outer shell and affecting the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body;

[0019] Figure 2 is a schematic diagram of the three-dimensional structure of the shell;

[0020] Figure 3 Schematic diagram of the three-dimensional structure of a square shell;

[0021] Figure 4 for Figure 2 A is an enlarged schematic diagram of the three-dimensional structure;

[0022] Figure 5 for Figure 3 A magnified schematic diagram of the three-dimensional structure of B.

[0023] In the figure: 1. outer shell; 11. smoke inlet; 111. smoke outlet; 112. fixing block; 12. water tank; 121. water inlet; 122. water outlet; 123. heat exchange tube; 2. square shell; 21. conical plate; 211. drawer; 212. handle; 22. servo motor; 3. square plate; 31. through hole; 311. cleaning brush; 312. screw ring; 313. screw; 314. bearing. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a flue gas waste heat recovery heat transfer tube bundle comprises an outer shell 1 and a square shell 2, wherein the square shell 2 is provided through the bottom of the outer shell 1, and a plurality of groups of heat exchange tubes 123 are arranged in an array in the outer shell 1, and a square plate 3 is movably provided at the top inner wall of the outer shell 1, and a through hole 31 is arranged through the square plate 3 in an array, and a cleaning brush 311 is arranged in the through hole 31, and a screw ring 312 is fixedly provided in the middle part of the square plate 3, and a screw rod 313 is connected with the inner thread of the screw ring 312, and a bearing 314 is provided on the top inner wall of the outer shell 1, and the bearing 314 is connected with the top inner wall of the outer shell 1 in an inlaid manner;

[0027] A servo motor 22 is fixedly disposed at the bottom of the square housing 2 , and an output end of the servo motor 22 is connected to the screw rod 313 .

[0028] Furthermore, when the flue gas waste heat recovery heat transfer tube bundle is used, the through hole 31 and the heat exchange tube 123 are symmetrically arranged to penetrate each other, so that the square plate 3 can be movably fitted with the top inner wall of the shell 1, and the bearing 314 is used to provide a smooth rotation of the screw 313. The screw 313 can be driven to rotate by controlling the operation of the servo motor 22. The threaded connection between the fixed screw ring 312 and the screw 313 will form an effect of the square plate 3 moving downward. The cleaning brush 311 in the through hole 31 is in contact with the outer surface of the heat exchange tube 123. When the square plate 3 moves downward, the cleaning brush 311 can scrape off the dirt on the heat exchange tube 123, thereby forming a cleaning effect on the heat exchange tube 123, effectively solving the problem that various solid particles and chemicals in the flue gas will cause scaling and pollution on the surface of the tube bundle, thereby reducing the heat transfer efficiency of the tube bundle.

[0029] Furthermore, a smoke inlet 11 is provided at one end of the shell 1, a smoke outlet 111 is provided at the other end of the shell 1, a water tank 12 is provided on the shell 1, and a heat exchange tube 123 penetrates the interior of the water tank 12, a fixing block 112 is fixedly provided on the outer surface of the shell 1, and the top of the fixing block 112 is fixedly connected to the water tank 12, a water inlet 121 is penetrated on one side of the water tank 12, and a water outlet 122 is penetrated on the other side of the water tank 12, the smoke inlet 11 and the smoke outlet 111 are used for smoke to enter and discharge, the water inlet 121 and the water outlet 122 are used for injecting water into and discharging water from the water tank 12, the heat exchange tube 123 can conduct the heat of the residual heat of the smoke into the water tank 12 to form a heat transfer effect, and the fixing block 112 serves to provide a stable installation effect of the water tank 12.

[0030] Embodiment 2

[0031] like Figure 1 , Figure 2 and Figure 3As shown, a flue gas waste heat recovery heat transfer tube bundle proposed by the utility model is another implementation mode of the utility model compared to the first embodiment. A conical plate 21 is fixedly arranged in the square shell 2, and two groups of drawers 211 are movably arranged in the square shell 2. The two groups of drawers 211 are movably located on both sides of the conical plate 21, and a handle 212 is fixedly arranged on one side of the drawer 211.

[0032] Furthermore, when the flue gas waste heat recovery heat transfer tube bundle is used, the scraped dirt will fall into the square shell 2, and then the conical plate 21 can disperse the dirt to both sides and drop it into the inside of the drawer 211 to form a collection effect. Then, the personnel pull the handle 212 to pull out the drawer 211 to handle the scraped dirt, thereby avoiding the problem of dirt accumulation blocking the outer shell 1 and affecting its operation.

[0033] Working principle: When using this flue gas waste heat recovery heat transfer tube bundle, first, the through hole 31 and the heat exchange tube 123 are symmetrically arranged to penetrate each other, so that the square plate 3 can be movably fitted with the top inner wall of the shell 1, and the bearing 314 is used to provide a smooth rotation of the screw 313. By controlling the operation of the servo motor 22, the screw 313 will be driven to rotate. The threaded connection between the fixed screw ring 312 and the screw 313 will form an effect of the square plate 3 moving downward. The cleaning brush 311 in the through hole 31 is in contact with the outer surface of the heat exchange tube 123. When the square plate 3 moves downward, the cleaning brush 311 can scrape off the dirt on the heat exchange tube 123, forming a cleaning effect on the heat exchange tube 123, effectively solving the problem that various solid particles and chemicals in the flue gas will cause scaling and pollution on the surface of the tube bundle, resulting in reduced heat transfer efficiency of the tube bundle.

[0034] Finally, the scraped dirt will fall into the square shell 2, and then the conical plate 21 can disperse the dirt to both sides and drop it into the inside of the drawer 211 to form a collection effect. Then the personnel pulls the handle 212 to pull out the drawer 211 to deal with the scraped dirt, avoiding the problem of dirt accumulation blocking the outer shell 1 and affecting its operation.

[0035] This is the working principle of the flue gas waste heat recovery heat transfer tube bundle.

[0036] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A flue gas waste heat recovery heat transfer tube bundle, comprising an outer shell (1) and a square shell (2), wherein the bottom of the outer shell (1) is provided with a square shell (2) penetrating therethrough, characterized in that: A plurality of groups of heat exchange tubes (123) are arranged in an array inside the shell (1); a square plate (3) is movably arranged at the top inner wall of the shell (1); through holes (31) are arranged in an array on the square plate (3); a cleaning brush (311) is arranged in the through hole (31); a screw ring (312) is fixedly arranged in the middle of the square plate (3); a screw rod (313) is connected to the screw ring (312) through a thread; a bearing (314) is arranged at the top of the screw rod (313); and the bearing (314) is engaged with the top inner wall of the shell (1); A servo motor (22) is fixedly arranged at the bottom of the square shell (2), and the output end of the servo motor (22) is connected to the screw rod (313).

2. The flue gas waste heat recovery heat transfer tube bundle according to claim 1, characterized in that: A smoke inlet (11) is provided at one end of the shell (1), and a smoke outlet (111) is provided at the other end of the shell (1).

3. The flue gas waste heat recovery heat transfer tube bundle according to claim 2, characterized in that: A water tank (12) is provided on the outer shell (1), and a heat exchange pipe (123) passes through the interior of the water tank (12).

4. The flue gas waste heat recovery heat transfer tube bundle according to claim 2, characterized in that: A fixing block (112) is fixedly arranged on the outer surface of the housing (1), and the top of the fixing block (112) is fixedly connected to the water tank (12).

5. The flue gas waste heat recovery heat transfer tube bundle according to claim 3, characterized in that: A water inlet (121) is provided through one side of the water tank (12), and a water outlet (122) is provided through the other side of the water tank (12).

6. The flue gas waste heat recovery heat transfer tube bundle according to claim 1, characterized in that: A conical plate (21) is fixedly arranged in the square shell (2), and two groups of drawers (211) are movably arranged in the square shell (2), and the two groups of drawers (211) are movably located on both sides of the conical plate (21).

7. The flue gas waste heat recovery heat transfer tube bundle according to claim 6, characterized in that: A handle (212) is fixedly provided on one side of the drawer (211).

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