A heat exchange tube surface dirt erasing structure, a tubular heat exchanger and an erasing method thereof

Abstract

This invention relates to the field of heat exchanger cleaning technology, specifically a structure for wiping the surface of heat exchange tubes, a tubular heat exchanger, and a wiping method thereof. Installed within a housing, the structure includes: a collar, disposed on and concentric with the housing, with bristles on its inner wall for wiping the serpentine tubes within the housing; a transverse component, disposed on the housing and connected to the collar, capable of driving the collar to reciprocate along the length of the housing; and a follower component, disposed within the housing and linked to the transverse component, capable of rotating the collar as it reciprocates along the length of the housing. This causes the collar to move in a circular motion relative to the serpentine cooling tubes as it moves along their length, resulting in the bristles within the collar spirally wiping the serpentine cooling tubes, thus improving the wiping effect.

Description

Technical Field

[0001] This invention relates to a heat exchanger cleaning technology, specifically a structure for wiping away dirt from the surface of heat exchange tubes, a tubular heat exchanger, and a method for wiping it. Background Technology

[0002] A heat exchanger is a device used to transfer heat from a hot fluid to a cold fluid to meet specified process requirements; it is an industrial application of convective heat transfer and heat conduction. Heat exchangers can be classified in different ways. Based on their operating process, they can be divided into three main categories: indirect-flow type, mixing type, and regenerative type (or regenerative type); based on the compactness of their surfaces, they can be divided into compact type and non-compact type.

[0003] Because of the heat exchange process within the heat exchanger, there are significant heat changes on the heat exchange tubes, leading to the formation of scale on the outer walls of the tubes. This scale affects the heat exchanger's efficiency, so it is necessary to clean the scale off the heat exchange tubes.

[0004] Currently, the cleaning of fouling on heat exchange tubes is generally still done manually. However, manual operation is slow and ineffective, which is not conducive to the long-term stable operation of the heat exchanger. Summary of the Invention

[0005] The purpose of this invention is to provide a structure for wiping away dirt on the surface of heat exchange tubes, a tubular heat exchanger, and a method for wiping away dirt, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A fouling removal structure for a heat exchange tube surface, installed inside a housing, includes:

[0008] A collar is disposed on the outer casing and concentric with the outer casing, and the inner wall of the collar is provided with bristles for wiping the serpentine tube inside the outer casing.

[0009] A transverse component is disposed on the outer shell and connected to the collar, the transverse component being able to drive the collar to reciprocate along the length direction of the outer shell;

[0010] A follower component is disposed within the housing and is linked to the transverse component. The follower component can drive the collar to rotate when the collar reciprocates along the length direction of the housing.

[0011] As a further aspect of the present invention: the transverse component includes two transmission wheels rotatably mounted in the housing, a transmission belt is sleeved between the two transmission wheels, and a drive device is connected to one of the transmission wheels whose shaft is fixed to the housing.

[0012] The lateral movement assembly also includes a connection structure that is connected to the drive belt and can drive the collar to move along the length direction of the outer casing.

[0013] As a further embodiment of the present invention: the connection structure includes a movable member disposed within the outer casing, the movable member having two sliding connecting parts, and the movable member being connected to the transmission belt via a fitting kit, the sliding connecting parts being able to slide on two crossbars disposed within the outer casing;

[0014] The connection structure further includes an annular groove disposed on the outer circumference of the collar, the annular groove being slidably connected to an arc-shaped component formed on the movable component.

[0015] As a further embodiment of the present invention: the fitting kit includes a pulley rotatably mounted on the transmission belt and a fitting groove provided along the length direction of the moving member, the pulley being able to slide within the fitting groove.

[0016] As a further embodiment of the present invention: the follower component includes a transmission rod rotatably mounted inside the housing, the transmission rod being connected to a bevel gear set disposed outside the housing via a belt, and the bevel gear set being connected to another transmission wheel;

[0017] The follower assembly also includes a meshing structure that is slidably connected to the transmission rod, and the meshing structure is connected to the collar.

[0018] The transmission rod is provided with a limiting groove along its length, and the limiting groove slides in conjunction with a limiting block provided on the meshing structure.

[0019] As a further embodiment of the present invention: the meshing structure includes two side plates symmetrically arranged on the moving part, a gear is rotatably mounted between the two side plates, the gear meshes with the teeth arranged on the collar, and the shaft of the gear is hollow so that the transmission rod can pass through it;

[0020] The limiting block is disposed on the inner wall of the gear shaft.

[0021] A tubular heat exchanger, including the aforementioned fouling removal structure on the surface of the heat exchange tubes, further includes:

[0022] A connecting shaft is fixed inside the outer casing. The interior of the connecting shaft is a hollow structure, and a connecting plate is fixed to one end of the connecting shaft. Two drain plates are rotatably mounted on the connecting plate.

[0023] An adjustment assembly, connecting the connecting shaft and the drain plate, is capable of changing the angle of the drain plate.

[0024] As a further embodiment of the present invention: the adjusting assembly includes a lead screw rotatably mounted on the outer casing and extending into the connecting shaft, the lead screw being provided with a threaded sleeve threadedly connected thereto, the threaded sleeve passing through the connecting shaft and connected to a connecting rod, and the connecting rod having two convex shafts symmetrically arranged at one end away from the threaded sleeve;

[0025] The adjustment assembly also includes a guide member disposed on the drainage plate, the guide member having a groove along its length, and the convex shaft being able to slide within the groove.

[0026] A method for removing dirt from the surface of a heat exchange tube using the aforementioned dirt removal structure includes the following steps:

[0027] Step 1: Connect the two connection ports on the outer casing to the circulating pump device. The circulating pump device contains cleaning agent. Before controlling the movement of the transverse component, the cleaning agent can be pumped into the outer casing using the circulating pump device.

[0028] Step 2: Activate the transverse component. The transverse component will drive the collar to reciprocate along the length of the outer shell to wipe the serpentine cooling pipes inside the outer shell and remove the dirt attached to the serpentine cooling pipes.

[0029] Step 3: When the transverse component moves, it will drive the follower component connected to it to move, causing the collar to make a circular motion. At this time, the collar will move spirally inside the outer shell under the drive of the transverse component and the follower component.

[0030] Step 4: Control the horizontal movement component to reverse its movement and wipe in another direction;

[0031] Step 5: After wiping, pump clean water into the casing to remove the dirt inside.

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] By using the lateral movement component, the moving part can reciprocate along the length of the serpentine cooling tube under the traction of the transmission belt when the drive device is working, thereby wiping away the dirt adhering to the outer surface of the serpentine cooling tube, improving the heat exchange efficiency between the liquid to be cooled and the serpentine cooling tube, enhancing the cooling / heating effect. Moreover, compared with manual cleaning, the mechanical cleaning method is more efficient and reduces labor costs.

[0034] By using a follower component, the collar moves along the length of the serpentine cooling tube, and the collar also moves in a circular motion relative to the serpentine cooling tube, so that the fibers inside the collar can spirally wipe the serpentine cooling tube, thus improving the wiping effect.

[0035] The adjustable components allow the liquid to be cooled to spiral forward under the guidance of the guide plate when it enters the outer casing. This increases the residence time of the liquid in the outer casing, extends the heat exchange time between the liquid and the serpentine cooling pipe, and improves the cooling / heating effect. Furthermore, the tilt angle of the guide plate can be changed by rotating the screw, allowing the residence time of the liquid in the outer casing to be cooled to be adjusted as needed. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of one embodiment of a tubular heat exchanger.

[0037] Figure 2 This is a schematic diagram of the internal structure of the outer shell in one embodiment of a tubular heat exchanger.

[0038] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle.

[0039] Figure 4 This is a schematic diagram of the transverse and follower components in one embodiment of a structure for wiping dirt off the surface of a heat exchange tube.

[0040] Figure 5 A schematic diagram of the transverse component in one embodiment of the structure for wiping dirt off the surface of a heat exchange tube.

[0041] Figure 6 A schematic diagram of the follower component in one embodiment of the structure for wiping dirt off the surface of a heat exchange tube.

[0042] Figure 7 for Figure 2 Enlarged view of the structure at point B in the middle.

[0043] Figure 8 This is a schematic diagram of the regulating component in one embodiment of a tubular heat exchanger.

[0044] In the diagram: 1. Outer shell; 2. Drive unit; 3. Transmission wheel; 4. Transmission belt; 5. Pulley; 6. Moving part; 7. Fitting groove; 8. Sliding connection; 9. Crossbar; 10. Arc-shaped part; 11. Connecting shaft; 12. Collar; 13. Annular groove; 14. Tooth; 15. Gear; 16. Side plate; 17. Limiting block; 18. Transmission rod; 19. Limiting groove; 20. Belt; 21. Bevel gear set; 22. Connecting plate; 23. Drain plate; 24. Guide part; 25. Slide groove; 26. Protruding shaft; 27. Connecting rod; 28. Threaded sleeve; 29. ​​Lead screw. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0047] Please see Figures 1 to 8 In this embodiment of the invention, a dirt removal structure for the surface of a heat exchange tube is installed inside the outer casing 1 and includes: a collar 12, a transverse moving assembly, and a follower assembly.

[0048] The collar 12 is disposed on the outer shell 1 and is concentric with the outer shell 1, and the inner wall of the collar 12 is provided with fluff for wiping the serpentine tube inside the outer shell 1.

[0049] The transverse component is disposed on the outer shell 1 and connected to the collar 12. The transverse component can drive the collar 12 to reciprocate along the length direction of the outer shell 1.

[0050] The lateral movement assembly includes two drive wheels 3 rotatably mounted inside the outer casing 1, a drive belt 4 is sleeved between the two drive wheels 3, and a drive device 2 is connected to one of the drive wheels 3 whose shaft is fixed to the outer casing 1.

[0051] The lateral movement assembly further includes a connecting structure connected to the transmission belt 4 and capable of driving the collar 12 to move along the length direction of the outer shell 1. The connecting structure includes a movable member 6 disposed within the outer shell 1. The movable member 6 is provided with two sliding connecting parts 8, and the movable member 6 is connected to the transmission belt 4 through a fitting kit. The sliding connecting parts 8 can slide on two crossbars 9 disposed within the outer shell 1. The fitting kit includes a pulley 5 rotatably mounted on the transmission belt 4 and a fitting groove 7 disposed along the length direction of the movable member 6. The pulley 5 can slide within the fitting groove 7.

[0052] The connection structure also includes an annular groove 13 disposed on the outer circumference of the collar 12, the annular groove 13 being slidably connected to the arc-shaped member 10 formed on the movable member 6.

[0053] In use, the control drive device 2 operates. When the output shaft of the drive device 2 rotates, it drives one of the transmission wheels 3 to rotate, and causes the transmission belt 4 sleeved on the two transmission wheels 3 to move. The transmission belt 4 can be regarded as being composed of two circumferential segments and two straight segments. As the transmission belt 4 moves continuously, under the action of the pulley 5 and the fitting groove 7, the moving part 6 moves back and forth along the length direction of the crossbar 9, thereby driving the collar 12 to move back and forth along the length direction of the serpentine cooling tube inside the outer shell 1, so as to wipe the serpentine cooling tube and remove the dirt on the serpentine cooling tube.

[0054] Specifically, when the pulley 5 moves to the circumferential section of the transmission belt 4, the pulley 5 will roll in the fitting groove 7, causing the moving part 6 to perform directional movement.

[0055] With the above configuration, when the drive device 2 is working, the moving part 6 can reciprocate along the length of the serpentine cooling tube under the traction of the transmission belt 4, thereby wiping away the dirt adhering to the outer surface of the serpentine cooling tube, improving the heat exchange efficiency between the liquid to be cooled and the serpentine cooling tube, enhancing the cooling / heating effect. Moreover, compared with manual cleaning, the mechanical cleaning method is more efficient and reduces labor costs.

[0056] Please see Figure 3 , Figure 4 , Figure 6 The follower component is disposed inside the outer shell 1 and is linked with the transverse component. When the collar 12 reciprocates along the length direction of the outer shell 1, the follower component can drive the collar 12 to rotate.

[0057] The follower assembly includes a transmission rod 18 rotatably mounted inside the housing 1. The transmission rod 18 is connected to a bevel gear set 21 disposed outside the housing 1 via a belt 20. The bevel gear set 21 is connected to another transmission wheel 3.

[0058] The follower assembly also includes a meshing structure that is slidably connected to the transmission rod 18. The meshing structure is connected to the collar 12. The transmission rod 18 is provided with a limiting groove 19 along its length direction. The limiting groove 19 is slidably engaged with a limiting block 17 provided on the meshing structure.

[0059] The bevel gear set 21 includes a first bevel gear and a second bevel gear that are rotatably mounted on the outer casing 1 and mesh with each other. The first bevel gear is connected to the belt 20, and the second bevel gear is connected to the transmission wheel 3.

[0060] The meshing structure includes two side plates 16 symmetrically arranged on the moving part 6, and a gear 15 is rotatably mounted between the two side plates 16. The gear 15 meshes with the teeth 14 arranged on the collar 12, and the shaft of the gear 15 is hollow so that the transmission rod 18 can pass through it. The limiting block 17 is arranged on the inner wall of the shaft of the gear 15.

[0061] When the drive device 2 is working, it will drive one of the transmission wheels 3 to rotate. A transmission belt 4 is sleeved between the two transmission wheels 3, so that the other transmission wheel 3 will rotate accordingly. Under the action of the bevel gear set 21 and the belt 20, the transmission rod 18 will rotate. A gear 15 is slidably sleeved on the transmission rod 18, and the limiting block 17 on the inner wall of the shaft of the gear 15 slides with the limiting groove 19 on the transmission rod 18, so that the gear 15 can rotate with the transmission rod 18. Since the gear 15 rotates between the two side plates 16, when the moving part 6 moves, it will drive the gear 15 to move along the length direction of the transmission rod 18. At the same time, the gear 15 is meshed with the teeth 14 on the collar 12, so that the gear 15 can drive the collar 12 to rotate. That is, when the moving part 6 drives the collar 12 to reciprocate along the length direction of the serpentine cooling pipe, the collar 12 will also make a circular motion relative to the serpentine cooling pipe, and use the fur on the inside of the collar 12 to wipe the serpentine cooling pipe.

[0062] With the above settings, as the collar 12 moves along the length of the serpentine cooling tube, the collar 12 will also make a circular motion relative to the serpentine cooling tube, so that the fibers inside the collar 12 can spirally wipe the serpentine cooling tube, thereby improving the wiping effect.

[0063] It should be noted that the aforementioned fluff should be made of thin, long rubber rods that are relatively hard and elastic.

[0064] Please see Figures 7-8 As an embodiment of the present invention, a tubular heat exchanger is also proposed, including the aforementioned heat exchange tube surface fouling removal structure, and further including: a connecting shaft 11 and an adjustment assembly;

[0065] The connecting shaft 11 is fixed inside the outer shell 1. The interior of the connecting shaft 11 is a hollow structure, and a connecting plate 22 is fixed at one end of the connecting shaft 11. Two diversion plates 23 are rotatably mounted on the connecting plate 22.

[0066] The adjusting assembly connects the connecting shaft 11 and the diversion plate 23. The adjusting assembly can change the angle of the diversion plate 23. The adjusting assembly includes a lead screw 29 rotatably mounted on the outer shell 1 and extending into the connecting shaft 11. A threaded sleeve 28 is provided on the lead screw 29 and threadedly connected thereto. The threaded sleeve 28 passes through the connecting shaft 11 and is connected to a connecting rod 27. Two convex shafts 26 are symmetrically arranged at the end of the connecting rod 27 away from the threaded sleeve 28.

[0067] The adjustment assembly also includes a guide 24 disposed on the diversion plate 23, the guide 24 having a groove 25 disposed along its length, and the convex shaft 26 being able to slide within the groove 25.

[0068] When the heat exchanger is in use, the liquid that needs to be cooled enters through the inlet of the outer casing 1 and exchanges heat with the serpentine cooling tube, and then flows out through the outlet on the outer casing 1. During this process, by rotating the lead screw 29, the threaded sleeve 28 fitted on the lead screw 29 can move along the length of the lead screw 29. Specifically, when the threaded sleeve 28 moves close to the connecting plate 22, the connecting rod 27 will move toward the guide plate 23 to deflect the guide plate 23. As the displacement of the threaded sleeve 28 increases, the deflection angle of the guide plate 23 will increase.

[0069] With the above settings, when the liquid to be cooled enters the outer casing 1, it can move forward in a spiral under the guidance of the guide plate 23, thereby increasing the residence time of the liquid to be cooled in the outer casing 1, increasing the heat exchange time between the liquid to be cooled and the serpentine cooling pipe, and improving the cooling / heating effect. Furthermore, by rotating the lead screw 29, the tilt angle of the guide plate 23 can be changed, so that the residence time of the liquid to be cooled in the outer casing 1 can be adjusted as needed.

[0070] As another embodiment of the present invention, a method for removing dirt from the surface of a heat exchange tube using the aforementioned dirt removal structure is also proposed, comprising the following steps:

[0071] Step 1: Connect the two connection ports on the outer casing 1 to the circulating pump device. The circulating pump device contains cleaning agent. Before controlling the movement of the transverse component, the cleaning agent can be pumped into the outer casing 1 using the circulating pump device.

[0072] Step 2: Activate the transverse component. The transverse component will drive the collar 12 to reciprocate along the length of the outer shell 1 to wipe the serpentine cooling pipe inside the outer shell 1 and remove the dirt attached to the serpentine cooling pipe.

[0073] Step 3: When the transverse component moves, it will drive the follower component connected to it to move, causing the collar 12 to make a circular motion. At this time, the collar 12 will move spirally inside the outer shell 1 under the drive of the transverse component and the follower component.

[0074] Step 4: Control the horizontal movement component to reverse its movement and wipe in another direction;

[0075] Step 5: After wiping, pump clean water into the outer casing 1 to remove the dirt inside the outer casing 1.

[0076] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0077] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A structure for wiping away dirt from the surface of a heat exchange tube, installed inside a housing (1), characterized in that, include: A collar (12) is disposed on the outer shell (1) and concentric with the outer shell (1), and the inner wall of the collar (12) is provided with fluff for wiping the serpentine tube inside the outer shell (1); A transverse component is disposed on the outer shell (1) and connected to the collar (12). The transverse component can drive the collar (12) to reciprocate along the length direction of the outer shell (1). A follower component is disposed inside the outer shell (1) and is linked with the transverse component. The follower component can drive the collar (12) to rotate when the collar (12) reciprocates along the length direction of the outer shell (1). The transverse assembly includes two drive wheels (3) rotatably mounted inside the outer shell (1), a drive belt (4) is sleeved between the two drive wheels (3), and a drive device (2) is connected to one of the drive wheels (3) whose shaft is fixed on the outer shell (1). The transverse assembly also includes a connection structure that is connected to the transmission belt (4) and can drive the collar (12) to move along the length direction of the outer shell (1); The connection structure includes a movable part (6) disposed inside the outer shell (1), the movable part (6) is provided with two sliding connecting parts (8), and the movable part (6) is connected to the transmission belt (4) through a fitting kit. The sliding connecting parts (8) can slide on two crossbars (9) disposed inside the outer shell (1). The connection structure further includes an annular groove (13) provided on the outer circumference of the collar (12), and the annular groove (13) is slidably connected to the arc-shaped member (10) formed on the moving member (6); The fitting kit includes a pulley (5) rotatably mounted on the transmission belt (4) and a fitting groove (7) provided along the length direction of the moving part (6), the pulley (5) being able to slide within the fitting groove (7); The follower assembly includes a transmission rod (18) rotatably mounted inside the housing (1), the transmission rod (18) being connected via a belt (20) to a bevel gear set (21) disposed outside the housing (1), and the bevel gear set (21) being connected to another transmission wheel (3); The follower assembly also includes a meshing structure that is slidably connected to the transmission rod (18), and the meshing structure is connected to the collar (12). The transmission rod (18) is provided with a limiting groove (19) along its length direction, and the limiting groove (19) slides with the limiting block (17) provided on the meshing structure; The meshing structure includes two side plates (16) symmetrically arranged on the moving part (6), and a gear (15) is rotatably installed between the two side plates (16). The gear (15) meshes with the teeth (14) arranged on the collar (12), and the shaft of the gear (15) is hollow so that the transmission rod (18) can pass through it. The limiting block (17) is disposed on the inner wall of the shaft of the gear (15).

2. A tubular heat exchanger, characterized in that, The heat exchange tube surface decontamination removal structure as described in claim 1 further includes: A connecting shaft (11) is fixed inside the outer shell (1). The inside of the connecting shaft (11) is a hollow structure, and a connecting plate (22) is fixed at one end of the connecting shaft (11). Two drain plates (23) are rotatably installed on the connecting plate (22). An adjustment component is connected to the connecting shaft (11) and the drain plate (23), and the adjustment component is capable of changing the angle of the drain plate (23).

3. A tubular heat exchanger according to claim 2, characterized in that, The adjustment assembly includes a lead screw (29) rotatably mounted on the outer casing (1) and extending into the connecting shaft (11). A threaded sleeve (28) is provided on the lead screw (29) and threadedly connected thereto. The threaded sleeve (28) passes through the connecting shaft (11) and is connected to a connecting rod (27). Two convex shafts (26) are symmetrically provided at the end of the connecting rod (27) away from the threaded sleeve (28). The adjustment assembly also includes a guide (24) disposed on the diversion plate (23), the guide (24) having a groove (25) along its length, and the convex shaft (26) being able to slide within the groove (25).

4. A method for removing dirt from the surface of a heat exchange tube using the dirt removal structure as described in claim 1, characterized in that, Includes the following steps: Step 1: Connect the two connection ports on the outer shell (1) to the circulating pump device. The circulating pump device contains cleaning agent. Before controlling the movement of the transverse component, the cleaning agent can be pumped into the outer shell (1) using the circulating pump device. Step 2: Start the transverse component. The transverse component will drive the collar (12) to move back and forth along the length of the outer shell (1) to wipe the serpentine cooling pipe inside the outer shell (1) and remove the dirt attached to the serpentine cooling pipe. Step 3: When the transverse component moves, it will drive the follower component connected to it to move, causing the collar (12) to make a circular motion. At this time, the collar (12) will move spirally inside the outer shell (1) under the drive of the transverse component and the follower component. Step 4: Control the horizontal movement component to reverse its movement and wipe in another direction; Step 5: After wiping, pump clean water into the outer shell (1) to remove the dirt inside the outer shell (1).

Images