A fouling-resistant shell-and-tube heat exchange assembly

Abstract

The utility model relates to the field of tubular heat exchanger discloses a kind of anti-fouling type shell-and-tube heat exchange components, including shell, the left and right ends of shell are provided with tube cover, two The tube cover is symmetrically arranged, the middle part of shell is provided with scale prevention mechanism, the scale prevention mechanism includes drive assembly, the drive assembly includes piston plate, the piston plate is connected with the tube cover piston located in right side, the middle part of piston plate is penetrated and is slidably connected with guide rod, the right end of guide rod is fixedly connected with the inner wall of the tube cover located in right side.In the utility model, by setting drive assembly on the side away from water inlet end, the normal flow of heat exchanger liquid can be effectively guaranteed, and by setting the cooperation between air inlet pipe, exhaust pipe and piston plate and scale removal component, the heat exchanger can be controlled by fluid, so that the scale removal component reciprocates, thereby ensuring scale removal effect and being more practical.

Description

Technical Field

[0001] This utility model relates to the field of tubular heat exchangers, and in particular to an anti-fouling shell-and-tube heat exchange assembly. Background Technology

[0002] Shell-and-tube heat exchangers are a common type of heat exchange equipment widely used in chemical, petroleum, and power industries. They achieve heat exchange through the transfer of heat between different fluids in the tube side and shell side.

[0003] In actual use, the fluid inside some traditional shell-and-tube heat exchangers often contains various impurities, ions, and other substances. During the heat exchange process, these substances are prone to deposit and crystallize on the surface of the heat exchange tubes, forming fouling.

[0004] A search revealed Chinese Patent Publication No. CN222733402U, which discloses a multi-pass tubular heat exchanger. The heat exchanger includes a shell, a tube sheet dividing the shell into a first chamber and a second chamber, and several heat exchange tubes connected to the tube sheet. The heat exchange tubes are located in the second chamber, and an anti-scaling mechanism for cleaning the inner wall of the heat exchange tubes is connected to the first chamber. The anti-scaling mechanism includes a spring, one end of which is fixedly connected to the tube sheet, and the other end is fixedly connected to a mounting plate. Several wiping components are evenly spaced along the length of the mounting plate, and these wiping components cooperate with the heat exchange tubes. This invention utilizes the impact of introduced wastewater on the mounting plate, which compresses the spring. The compressed spring generates elastic force, which resets the mounting plate. The mounting plate, via a fixed rod, moves the wiping components, which clean the inner wall of the heat exchange tubes, preventing scale from adhering to the inner wall and thus maintaining the heat exchange efficiency of the heat exchange tubes.

[0005] The aforementioned device, although it uses the interaction between components such as the mounting plate and springs to clean the inner wall of the heat exchange tubes through the wiping assembly, has several drawbacks. The mounting plate's location at the water inlet affects the efficiency of water flow into the heat exchange tubes. Furthermore, once the water enters the heat exchanger, it continuously pushes the mounting plate, making it difficult for the springs to drive the mounting plate to reciprocate and thus effectively clean the inner wall of the heat exchange tubes. This results in poor scale prevention and limited practicality. Therefore, a scale-resistant shell-and-tube heat exchange assembly is proposed to address these issues. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides an anti-scaling shell-and-tube heat exchange assembly, which aims to improve the existing technology where the mounting plate at the water inlet affects the efficiency of water flow into the heat exchange tube, and the water flow continuously pushes the mounting plate after entering the heat exchanger, making it difficult for the spring to push the mounting plate to reciprocate and thus clean the inner wall of the heat exchange tube by the wiping assembly, resulting in poor anti-scaling effect.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an anti-scaling shell-and-tube heat exchange assembly, comprising a shell, wherein a tube cover is provided at both the left and right ends of the shell, the two tube covers are symmetrically arranged, an anti-scaling mechanism is provided in the middle of the shell, the anti-scaling mechanism includes a driving assembly, the driving assembly includes a piston plate, the piston plate is piston-connected to the tube cover located on the right side, a guide rod is slidably connected through the middle of the piston plate, the right end of the guide rod is fixedly connected to the inner wall of the tube cover located on the right side, two mounting seats are fixedly connected to the front side of the piston plate, multiple mounting rods are fixedly connected to the left side of the mounting seats, an air inlet pipe is slidably connected through the upper right side of the tube cover located on the right side, and an exhaust pipe is slidably connected through the lower right side of the tube cover located on the right side.

[0008] As a further description of the above technical solution: The piston plate has inclined ring surfaces on both the left and right sides.

[0009] As a further description of the above technical solution: The anti-scaling mechanism also includes multiple scale-removing components, each comprising multiple cleaning parts, and multiple connecting rods are provided between the multiple cleaning parts.

[0010] As a further description of the above technical solution: The right ends of the multiple connecting rods are all fixedly connected to a fixing block, and the fixing block is fixedly connected to the mounting rod.

[0011] As a further description of the above technical solution: The cleaning component includes a support ring, with inclined rings on both the left and right sides of the support ring, and the connecting rod passes through and is fixedly connected to the support ring.

[0012] As a further description of the above technical solution: A rubber sleeve is fixedly connected to the outer wall of the support ring.

[0013] As a further description of the above technical solution: Mounting plates are fixedly connected to the left and right ends of the inner wall of the outer shell. A heat exchange tube runs through and is fixedly connected to the two mounting plates. The descaling component is located inside the heat exchange tube.

[0014] As a further description of the above technical solution: A partition is fixedly connected to the middle of the inner wall of the tube cap located on the left side, and an inlet pipe and an outlet pipe are arranged sequentially from top to bottom on the left side of the tube cap.

[0015] This utility model has the following beneficial effects: 1. In this utility model, by setting the drive component on the side away from the water inlet, the normal flow of liquid in the heat exchanger can be effectively guaranteed. At the same time, by setting the cooperation between the air inlet pipe, the exhaust pipe, the piston plate, and the descaling component, the heat exchanger can control the fluid to make the descaling component move back and forth, thereby ensuring the descaling effect and making it more practical.

[0016] 2. In this utility model, by providing inclined rings on both the left and right sides of the support ring, the left and right sides of the cleaning component can better fit against the inner wall of the heat exchange tube, so that the descaling component can better clean the inner wall of the heat exchange tube when it moves back and forth. The outer wall of the support ring is fixed with a rubber sleeve, so that the descaling component can prevent damage to the inner wall of the heat exchange tube when cleaning it, making it more practical. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the left side of an anti-scaling shell-and-tube heat exchange assembly proposed in this utility model; Figure 2 This is a three-dimensional structural diagram of the right side of an anti-scaling shell-and-tube heat exchange assembly proposed in this utility model. Figure 3 This is a three-dimensional cross-sectional structural diagram of the shell and tube cover of an anti-scaling shell-and-tube heat exchange assembly proposed in this utility model. Figure 4 This is a partial three-dimensional structural diagram of the descaling component on the left side of an anti-scaling shell-and-tube heat exchange assembly proposed in this utility model. Figure 5 This is a partial three-dimensional structural diagram of the descaling component on the right side of an anti-scaling shell-and-tube heat exchange assembly proposed in this utility model. Figure 6 This is a partial three-dimensional cross-sectional view of the descaling component of an anti-scaling shell-and-tube heat exchange assembly proposed in this utility model. Figure 7 This is a three-dimensional structural diagram of the drive component of an anti-scaling shell-and-tube heat exchange assembly proposed in this utility model.

[0018] Legend: 1. Outer shell; 2. Pipe cap; 3. Drive assembly; 4. Descaling assembly; 21. Air inlet pipe; 22. Baffle plate; 23. Liquid inlet pipe; 24. Liquid outlet pipe; 25. Exhaust pipe; 11. Mounting plate; 12. Heat exchanger tube; 31. Piston plate; 32. Guide rod; 33. Mounting base; 311. Angled annular surface; 331. Mounting rod; 41. Cleaning component; 42. Connecting rod; 43. Fixing block; 411. Support ring; 412. Rubber sleeve. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Reference Figures 1-3 This utility model provides an embodiment of an anti-scaling shell-and-tube heat exchange assembly, comprising a shell 1, with tube caps 2 at both ends of the shell 1. The shell 1 and tube caps 2 together form the shell of a shell-and-tube heat exchanger. The shell 1 and tube caps 2 can be connected by flanges. The two tube caps 2 are symmetrically arranged. An anti-scaling mechanism is provided in the middle of the shell 1 to prevent scale formation inside the heat exchange tubes 12. The anti-scaling mechanism includes a drive assembly 3, which is used to drive multiple descaling assemblies 4 to clean the inside of the heat exchange tubes 12. Mounting plates 11 are fixedly connected to the left and right ends of the inner wall of the shell 1, which are used to connect the heat exchange tubes 12. The two mounting plates 11 are connected through and fixedly connected to the heat exchange tubes 12 to complete heat exchange. There are multiple heat exchange tubes 12, and the descaling assemblies 4 are arranged inside the heat exchange tubes 12.

[0021] like Figure 3 and Figure 7 As shown, the drive assembly 3 includes a piston plate 31, which can be pushed by liquid on the left or gas on the right. A guide rod 32 is slidably connected through the middle of the piston plate 31. A seal is provided between the guide rod 32 and the piston plate 31 to block the liquid and gas. The piston plate 31 is piston-connected to the pipe cap 2 located on the right. The right end of the guide rod 32 is fixedly connected to the inner wall of the pipe cap 2 located on the right. Two mounting seats 33 are fixedly connected to the front side of the piston plate 31 for connecting with the mounting rod 331. Multiple mounting rods 331 are fixedly connected to the left side of the mounting seat 33 for installing with the descaling assembly 4. Inclined annular surfaces 311 are provided on both the left and right sides of the piston plate 31, which allows the left and right sides of the piston plate 31 to better fit against the inner wall of the pipe cap 2 when close to the edge of the pipe cap 2.

[0022] Please see Figures 4-6An air inlet pipe 21 is fixedly connected to the upper right side of the right-side cover 2, which is used to input gas into the right-side cover 2. An exhaust pipe 25 is fixedly connected to the lower right side of the right-side cover 2, which is used to discharge the gas in the right-side cover 2. This is used to cooperate with the left and right movement of the piston plate 31, thereby cooperating with the descaling component 4 to clean the inner wall of the heat exchange tube 12. When the cold liquid equipment is not in use, the left and right movement of the piston plate 31 can be controlled by the inlet and outlet of the gas. Valves are installed in both the air inlet pipe 21 and the exhaust pipe 25. A baffle 22 is fixedly connected to the middle of the inner wall of the left-side cover 2, which is used to separate the fluid before and after heat exchange. From top to bottom, the left side of the cover 2 is provided with an inlet pipe 23 and an outlet pipe 24, which are used to cooperate with the inlet and outlet of liquid.

[0023] Furthermore, the anti-scaling mechanism also includes multiple descaling components 4, which are used to clean the inner wall of the heat exchange tube 12. The descaling components 4 have a high moving frequency and include multiple cleaning elements 41 arranged in a ring shape. Liquid can flow through the middle of the cleaning elements 41 in the heat exchange tube 12. Multiple connecting rods 42 are provided between the multiple cleaning elements 41 to connect them. The multiple cleaning elements 41 are equidistant. The right ends of the multiple connecting rods 42 are fixedly connected to a fixing block 43. The cleaning component 41 is used to cooperate with the installation of the descaling component 4. The fixing block 43 is fixedly connected to the mounting rod 331. The cleaning component 41 includes a support ring 411, which is used to cooperate with cleaning. The left and right sides of the support ring 411 are provided with inclined rings so that the left and right sides of the cleaning component 41 can better fit the inner wall of the heat exchange tube 12, thereby enabling better cleaning. The connecting rod 42 passes through and is fixedly connected to the support ring 411. The outer wall of the support ring 411 is fixedly connected with a rubber sleeve 412, which is used to prevent damage to the inner wall of the heat exchange tube 12. The support ring 411 can provide stable support for it.

[0024] Working principle: During use, liquid enters the upper part of the left-side tube cover 2 through the inlet pipe 23, and then enters the multiple heat exchange tubes 12 located in the upper part through the tube cover 2. When the liquid flows into the right-side tube cover 2, the liquid will push the piston plate 31 to move to the right, thereby causing the piston plate 31 to drive the descaling component 4 connected to it via the mounting rod 331 to move to the right. At this time, the cleaning component 41 will move to the right and clean the inner wall of the heat exchange tube 12. At the same time, air can also be supplied to the right-side tube cover 2 through the air inlet pipe 21, causing the gas to push the piston plate 31 to move to the left, thereby causing the piston plate 31 to drive the cleaning component 41 to move to the left. This causes the connecting rod 42 to move the cleaning component 41 to the left, allowing the cleaning component 41 to clean the heat exchange tube 12 again. Then, the valve of the air inlet pipe 21 can be closed, allowing the gas to be discharged through the exhaust pipe 25. At this time, the liquid can push the piston plate 31 to the right again. When the piston plate 31 moves to the rear, the valve of the exhaust pipe 25 can be closed, and air can be introduced again through the air inlet pipe 21, thereby pushing the piston plate 31 to the left again. This process is repeated to complete the cleaning of the inner wall of the heat exchange tube 12, achieving the purpose of preventing scale. The liquid will eventually be sent back to the tube cover 2 on the left side through the lower half of the heat exchange tube 12 and discharged through the liquid outlet pipe 24.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A shell-and-tube heat exchange assembly with anti-scaling properties, comprising a shell (1), characterized in that: The outer shell (1) is provided with a pipe cover (2) at both the left and right ends. The two pipe covers (2) are symmetrically arranged. The outer shell (1) is provided with an anti-scaling mechanism in the middle. The anti-scaling mechanism includes a drive component (3). The drive assembly (3) includes a piston plate (31), which is connected to the piston of the tube cap (2) located on the right side. A guide rod (32) is slidably connected through the middle of the piston plate (31). The right end of the guide rod (32) is fixedly connected to the inner wall of the tube cap (2) located on the right side. Two mounting seats (33) are fixedly connected to the front side of the piston plate (31). Multiple mounting rods (331) are fixedly connected to the left side of the mounting seats (33). An air intake pipe (21) is connected through and fixedly connected to the upper right side of the pipe cover (2) located on the right side, and an exhaust pipe (25) is connected through and fixedly connected to the lower right side of the pipe cover (2) located on the right side.

2. The anti-scaling shell-and-tube heat exchange assembly according to claim 1, characterized in that: The piston plate (31) is provided with inclined annular surfaces (311) on both the left and right sides.

3. The anti-scaling shell-and-tube heat exchange assembly according to claim 1, characterized in that: The anti-scaling mechanism also includes a number of scale removal components (4), each of which includes a number of cleaning parts (41), and a number of connecting rods (42) are provided between the multiple cleaning parts (41).

4. The anti-scaling shell-and-tube heat exchange assembly according to claim 3, characterized in that: The right ends of the multiple connecting rods (42) are fixedly connected to a fixing block (43), and the fixing block (43) is fixedly connected to the mounting rod (331).

5. The anti-scaling shell-and-tube heat exchange assembly according to claim 4, characterized in that: The cleaning component (41) includes a support ring (411), with inclined rings on both the left and right sides of the support ring (411), and the connecting rod (42) passes through and is fixedly connected to the support ring (411).

6. The anti-scaling shell-and-tube heat exchange assembly according to claim 5, characterized in that: A rubber sleeve (412) is fixedly connected to the outer wall of the support ring (411).

7. The anti-scaling shell-and-tube heat exchange assembly according to claim 3, characterized in that: The inner wall of the outer shell (1) is fixedly connected to the left and right ends of the mounting plate (11), and the two mounting plates (11) are connected to a heat exchange tube (12) through and fixedly connected to each other. The descaling component (4) is located inside the heat exchange tube (12).

8. The anti-scaling shell-and-tube heat exchange assembly according to claim 1, characterized in that: A partition (22) is fixedly connected to the middle of the inner wall of the tube cap (2) located on the left side. An inlet pipe (23) and an outlet pipe (24) are arranged sequentially from top to bottom on the left side of the tube cap (2).

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