Vertical heat exchanger facilitating internal cleaning

Abstract

The present application relates to heat exchanger technical field, disclose a kind of vertical heat exchanger convenient to internal cleaning.The vertical heat exchanger includes pressure vessel body, heat exchange mechanism, end plate assembly and baffle assembly, pressure vessel body is divided into upper cavity, middle cavity and lower cavity from top to bottom;Heat exchange mechanism is arranged in middle cavity, and heat exchange mechanism includes heat exchange pipe, both ends of heat exchange pipe are sleeved on end plate assembly;End plate assembly includes floating plate and fixed support plate, the matching position of heat exchange pipe and floating plate is sealing state, and the edge of floating plate is provided with insulating rubber ring;Baffle assembly is contacted with vibration generating mechanism.This application is connected by heat exchange mechanism and end plate assembly, using the activity redundancy of floating plate, successfully introduces vibration generating mechanism and ensures that sealing is not damaged, realizes on-line automatic cleaning dust, and does not need to stop during cleaning, by starting vibration regularly, can significantly reduce the frequency of manual stop cleaning.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, and more specifically to a vertical heat exchanger that is easy to clean internally. Background Technology

[0002] A vertical heat exchanger is a device that achieves efficient heat exchange by vertically arranging its core components. Its biggest advantages are saving floor space and facilitating natural circulation. Inside the vertical heat exchanger, multiple heat exchange tubes are distributed to allow heat exchange with the condensate. These heat exchange tubes are located within a heat exchange chamber, into which a heat source gas generated from industrial production is introduced. This heat source gas exchanges heat with the multiple heat exchange tubes within the heat exchange chamber, thereby cooling the heat source gas and heating the liquid inside the heat exchange tubes.

[0003] In industrial waste heat recovery applications, gas-liquid heat exchangers are commonly used to recover heat from high-temperature flue gas or industrial exhaust gas. The heat exchanger tubes contain liquid, while a gas flows through a chamber outside the tubes, and heat exchange occurs between the gas and liquid at the tube walls. Over long-term use, scaling inside the heat exchange tubes and dust accumulation on the outside are extremely common phenomena, representing one of the major challenges in heat exchanger operation. Furthermore, in some factory applications, heat exchangers are used to cool high-temperature flue gas with high dust concentrations. In this scenario, dust accumulates rapidly on the outside of the heat exchange tubes, leading to a significant decrease in heat exchange efficiency. Currently, cleaning heat exchangers is very cumbersome, and there is a lack of effective dust removal equipment.

[0004] Although the prior art CN108120338A discloses "a self-cleaning vertical heat exchanger," in which the scraper assembly moves upward under the impact force generated by the material flow, while the scraper assembly sinks downward due to its own gravity; the instability of the impact force causes the scraper assembly to move up and down continuously, and the scrapers on the scraper assembly continuously clean the inside of the riser, ensuring that the tube layer achieves the purpose of self-cleaning. However, it mainly cleans the inside of the heat exchange tubes and cannot treat the dust accumulated on the outside of the heat exchange tubes; furthermore, the rigid scraping force brought by the scraper assembly, i.e., the scraper assembly in contact with the riser, limits the types of media inside the heat exchange tubes and is prone to frictional damage to the inside of the riser.

[0005] The prior art CN122566580A discloses a "shell-and-tube heat exchanger and its heat exchange method," which involves changing the baffles to a reciprocating type. During this reciprocating motion, the baffles sweep across the flow dead zone within the shell side; their edges can scrape the outer wall of the tube bundle and the inner wall of the shell, achieving online removal of fouling. However, this method mainly relies on the scraping force of the baffles during reciprocating motion, i.e., mechanical friction between the baffles and the tube bundle, which can easily cause frictional damage to the tube bundle.

[0006] Therefore, there is an urgent need for a heat exchange device that can effectively clean the dust accumulated on the outside of the heat exchange tubes while reducing frictional damage to the heat exchange tubes. Summary of the Invention

[0007] To address the issue that existing heat exchangers primarily rely on scraping force to clean the heat exchange tubes, resulting in direct contact between the scraping components and the heat exchange tubes and potential frictional damage, a vertical heat exchanger that facilitates internal cleaning is proposed.

[0008] In this technical solution, the vibration force provided by the vibration generating mechanism is transmitted to the baffle assembly and the end plate assembly through the coordinated arrangement of the heat exchange mechanism, the baffle assembly and the vibration generating mechanism, and then to the heat exchange tube, and makes "flexible" contact with the heat exchange tube, thereby realizing online automatic cleaning of accumulated dust without stopping the machine during cleaning, and avoiding frictional damage to the heat exchange tube and other components during cleaning.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following solution: The purpose of this technical solution is to provide: a vertical heat exchanger that is easy to clean internally, including a pressure vessel body, which is divided into upper, middle and lower cavities. A heat exchange mechanism is provided in the middle cavity. The heat exchange mechanism includes multiple parallel heat exchange tubes and baffle assemblies. The two ends of each heat exchange tube are connected to an end plate assembly. The end plate assembly includes a floating plate and a fixed support plate. The ends of the heat exchange tubes are fixedly connected to the floating plates, and the mating position between the heat exchange tubes and the floating plates is kept sealed. The edge of the floating plates is sealed and isolated from the middle cavity by an insulating rubber ring. The fixed support plate provides axial and circumferential support for the heat exchange mechanism. The baffle assemblies are evenly distributed along the length of the heat exchange tubes, and there are multiple baffles in the baffle assemblies that contact and cooperate with the vibration generating mechanism.

[0010] A floating plate is used as the movable end connector of the heat exchange tubes, combined with an insulating rubber ring to achieve dynamic sealing of the central cavity. This ensures that cooling water does not seep into the central cavity and provides axial expansion and contraction redundancy for the heat exchange tubes, avoiding thermal stress concentration. Meanwhile, the fixed support plate provides reliable support, ensuring the stability of the overall structure. The uniform distribution of the baffle assembly extends the flue gas flow path, improves heat exchange efficiency, and provides a structural basis for vibration cleaning. Utilizing the movable redundancy of the floating plate, a vibration generating mechanism is successfully introduced without compromising the seal, achieving online automatic dust cleaning.

[0011] Preferably, in each end plate assembly, the fixed support plate is located on the side of the floating plate near the central cavity. The fixed support plate has multiple through holes I for the heat exchange tubes to pass through. There is a gap between the inner wall of the through hole I and the heat exchange tube. A stepped groove is formed on the side of the through hole I near the floating plate. An elastic support washer is provided in the stepped groove. The elastic support washer provides flexible support between the floating plate and the fixed support plate in the axial direction of the heat exchange tube and in the circumferential direction of the heat exchange tube.

[0012] Preferably, the floating plate has multiple through holes II for fixing the heat exchange tubes, and the through holes II cooperate with the through holes I. Here, "cooperation" specifically refers to the cooperation in position and number. The cooperation between the through holes I and the through holes II achieves effective fixing and support of the heat exchange tubes, ensuring the stability of the heat exchange tubes during operation (including cleaning dust).

[0013] Preferably, a plurality of first baffles and a plurality of second baffles are evenly arranged in the middle cavity along the length of the heat exchange tube, and the first baffles are in contact with the vibration generating mechanism.

[0014] Preferably, the pressure vessel body includes a top cover, a bottom cover, and a middle tube shell. The top cover and the middle tube shell are detachably connected, and the bottom cover and the middle tube shell are detachably connected. The bottom cover is fixed to the base.

[0015] Preferably, multiple mounting portions are arranged on the middle tube shell along the axial direction of the heat exchange tube, and each mounting portion has a mounting cavity in which the vibration generating mechanism is fixedly installed.

[0016] Preferably, the vibration generating mechanism includes a vibration motor and a vibration transmission shaft. One end of the vibration transmission shaft contacts the first baffle plate, and the other end abuts against the elastic pad. The vibration motor is fixedly sleeved on the vibration transmission shaft, and the vibration direction of the vibration motor is the same as the axial direction of the vibration transmission shaft.

[0017] Preferably, the mounting cavity is connected to the central cavity, and a heat insulation plate is provided between the mounting cavity and the central cavity.

[0018] Preferably, a groove is provided at the center of the end of the first baffle plate, and the outer side of the end of the first baffle plate is attached to the inner wall of the middle cavity through a metal elastic support layer. A through hole III for the flow of heat exchange medium is provided at the center of the first baffle plate; there is no through hole at the center of the second baffle plate, and there is a gap between the outer side of the end of the second baffle plate and the inner wall of the middle cavity.

[0019] Preferably, an air outlet flange for connecting to the air outlet end is fixed at the upper end of the middle tube shell sidewall, and an air inlet flange for connecting to the air inlet end is fixed at the lower end of the middle tube shell sidewall; a water inlet flange is fixed at the top cover sidewall, and a water outlet flange is fixed at the bottom of the bottom cover.

[0020] Preferably, the mounting part includes a flange body and a cover body. The flange body is connected to the central cavity on the side near the central cavity, and the cover body is detachably mounted on the flange body. A sealing gasket is provided between the cover body and the flange body.

[0021] The positional relationships involved in this technical solution, such as "inner", "upper", "lower", "both ends", "above", "between", "axial", "circumferential", "outer", "inner", "edge", "one end", "lower end", "other end", "end", "center position", and "upper end", are defined according to the actual usage conditions and are conventional terms in this technical field, as well as conventional terms used by those skilled in the art in actual use.

[0022] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and 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 this invention based on the specific circumstances.

[0023] The beneficial technical effects of adopting this technical solution are as follows: 1. In this invention, by improving the end structure of the heat exchange mechanism in the heat exchanger, setting a matching baffle assembly, and combining it with a vibration generating mechanism to provide vibration, the dust accumulation in the heat exchange tube can be cleaned periodically, preventing the dust accumulation from affecting heat transfer, etc.

[0024] 2. In this invention, a heat exchange mechanism is connected to an end plate assembly, which includes a floating plate and a fixed support plate. Utilizing the movable redundancy of the floating plate, a vibration generating mechanism is successfully introduced while ensuring the seal is not compromised. This enables online automatic dust removal without requiring machine shutdown. By periodically initiating vibration, the frequency of manual shutdowns for cleaning is significantly reduced, greatly improving the continuous operating time and maintenance convenience of the equipment. The fixed support plate provides reliable support, ensuring the stability of the overall structure.

[0025] 3. In this invention, a baffle assembly is provided within the pressure vessel body, and a vibration generating mechanism is engaged with the baffle assembly. Specifically, a through hole III is provided at the center of the first baffle plate, and a gap exists between the outer end of the second baffle plate and the inner wall of the central cavity. The first and second baffle plates form a specific baffle structure, which on the one hand extends the flue gas flow path and improves heat exchange efficiency; on the other hand, it provides a structural basis for vibration cleaning. For example, the first baffle plate is in contact with each heat exchange tube, so when a vibration generating mechanism is added to one side of the first baffle plate, all heat exchange tubes can vibrate simultaneously. Simultaneously, a flexible support design (end plate assembly) is incorporated at the ends of the heat exchange tubes. While meeting sealing requirements, it can adapt to operating conditions under vibration. This flexible support provides support and absorbs most of the vibration transmitted from the central cavity to the welding position at the end of the heat exchange tube, thus enabling the heat exchanger to clean dust from the outside of the heat exchange tubes without shutting down the system. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a side view of the present invention; Figure 3 for Figure 2 A cross-sectional view along the AA direction; Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 for Figure 3 Enlarged view of point C in the middle; Figure 6 This is a schematic diagram of the arrangement of the heat exchange mechanism and the baffle assembly in this invention; Figure 7 This is a schematic diagram of the baffle assembly in this invention.

[0027] In the figure, 1-pressure vessel body, 101-top cover, 102-middle shell, 103-bottom cover, 2-outlet flange, 3-inlet flange, 4-inlet flange, 5-outlet flange, 6-base, 7-mounting part, 701-flange body, 702-cover body, 8-heat exchange tube, 9-second baffle plate, 10-first baffle plate, 11-vibration transmission shaft, 12-vibration motor, 13-metal elastic support layer, 14-heat insulation plate, 15-elastic pad, 16-floating plate, 17-fixed support plate, 18-elastic support gasket, 19-insulating rubber ring. Detailed Implementation

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1 This embodiment provides: a vertical heat exchanger that is easy to clean internally, such as... Figure 3 As shown, it includes a pressure vessel body 1 and a heat exchange mechanism, end plate assembly and baffle assembly installed inside the pressure vessel body 1. There are two end plate assemblies, which are respectively installed in the upper and lower parts of the pressure vessel body 1. The end plate assembly divides the pressure vessel body 1 into an upper cavity, a middle cavity and a lower cavity. The upper cavity is connected to the inlet of cooling water, the heat exchange mechanism is installed in the middle cavity, and the lower cavity is connected to the outlet of cooling water. The heat exchange mechanism includes heat exchange tubes 8, both ends of which are sleeved on end plate assemblies. The upper cavity and the lower cavity are connected by the heat exchange tubes. Figure 5 As shown, the end plate assembly includes a floating plate 16 and a fixed support plate 17. The floating plate 16 is used to fix (e.g., weld) the end of the heat exchange tube 8, and the fixed support plate 17 is used to support the heat exchange tube 8 axially and circumferentially. The floating plate 16 is located on the outside of the central cavity, and the fixed support plate 17 is located on the inside of the central cavity; the mating position between the heat exchange tube 8 and the floating plate 16 is in a sealed state, and the edge of the floating plate 16 is provided with an insulating rubber ring 19 for sealing and isolating the central cavity; the baffle assembly is evenly distributed along the length direction of the heat exchange tube 8, and the baffle assembly is in contact with a vibration generating mechanism.

[0030] It should be noted that one of the fastest ways to clean accumulated dust is to shake off the dust from the surface of the heat exchange tube 8 using high-frequency vibration. However, the existing heat exchange mechanism has a rigid connection structure between the heat exchange tube 8 and the end plate, which is completed by welding. Forcibly installing a shaking device can easily cause the weld to detach, which will cause the cooling water in the upper and lower cavities to seep into the middle cavity from the detached position, resulting in water accumulation in the middle cavity and seriously affecting the heat exchange between gas and liquid.

[0031] In this embodiment, the heat exchange tubes 8 are connected, supported, and fixed by an end plate assembly. The end plate assembly includes a floating plate 16 with a certain amount of mobility. The floating plate 16 cooperates with the insulating rubber ring 19 to seal and isolate the central cavity. The insulating rubber ring 19 is in direct contact with the cooling water and will not be melted by the high-temperature flue gas. Based on this design, a vibration generating mechanism is added. The vibration generating mechanism contacts the baffle assembly and can drive the baffle assembly to vibrate, thereby driving the multiple heat exchange tubes 8 fixed to the baffle assembly to vibrate. This quickly shakes off the dust accumulated on the baffle assembly and the heat exchange tubes 8. The shaken-off dust is carried out of the central cavity along with the heat exchange airflow. Only periodic activation of the vibration assembly is needed to prevent dust accumulation, without the need for shutdown.

[0032] Example 2 Based on Example 1, this example provides a specific implementation method for the installation of the heat exchange tube 8 on the end plate assembly.

[0033] There are multiple heat exchange tubes (8), which are arranged in parallel along the axial direction. The fixed support plate 17 has multiple through holes I for the heat exchange tube 8 to pass through. There is a gap between the inner wall of the through hole I and the heat exchange tube 8. The through hole I has a stepped groove at one end near the floating plate 16. An elastic support washer 18 is fitted inside the stepped groove. The elastic support washer 18 adopts a non-continuous ring structure. The two ends overlap to form a ring, which is easy to replace. The elastic support washer 18 provides flexible support between the floating plate 16 and the fixed support plate 17 in the axial direction of the heat exchange tube 8. The elastic support washer 18 provides flexible support between the heat exchange tube 8 and the fixed support plate 17 in the circumferential direction of the heat exchange tube 8. In addition, the floating plate 16 has multiple through holes II for fixing the heat exchange tube 8, and the through holes II cooperate with the through holes I.

[0034] Alternatively, elastic beads can be used to replace the elastic support washer 18. Multiple elastic beads distributed in the stepped groove can be replaced in time when aging, without disassembling the heat exchange tube 8 and the floating plate 16. The fixed support plate 17 is detachably fixed at both ends of the middle cavity (middle tube shell 102). When replacing, it is convenient to adjust the distance between the floating plate 16 and the fixed support plate 17, so that the elastic beads can automatically roll into each stepped groove to form an elastic support structure with the same function as the elastic support washer 18 and make it more convenient to replace when aging.

[0035] Example 3 Based on embodiments 1-2, this embodiment provides a folding flow assembly with a specific structure, and further limits its specific installation: like Figure 3 , Figure 6 , Figure 7As shown, the baffle assembly includes multiple first baffles 10 and multiple second baffles 9. The first baffles 10 and second baffles 9 are arranged adjacent to each other, and both the first baffles 10 and second baffles 9 are uniformly distributed along the length of the heat exchange tube 8. The first baffles 10 are in contact with the vibration generating mechanism. By uniformly arranging the first baffles 10 and second baffles 9, a tortuous flue gas channel is formed, which enhances the convective heat transfer effect between the flue gas and the heat exchange tube 8. At the same time, by using the first baffles 10 as the contact point for vibration transmission, the vibration energy can be directly applied to the core heat exchange area, ensuring the efficiency and uniformity of the cleaning effect.

[0036] The first baffle plate 10 has a groove at its end for cooperating with the vibration generating mechanism. Preferably, the groove is located at the center of the end of the first baffle plate 10 (e.g., Figure 4 (As shown). A metal elastic support layer 13 for fitting against the inner wall of the middle cavity is sleeved on the outer side of the end of the first baffle 10. A through hole Ⅲ for the flow of heat exchange medium is provided at the center of the first baffle 10 (as shown). Figure 7 (As shown); there is a gap between the outer end of the second baffle 9 and the inner wall of the middle cavity. By differentiating the structures of the first baffle 10 and the second baffle 9, the flue gas forms a more complex turbulence when it flows through, which significantly enhances the heat exchange effect; the metal elastic support layer 13 of the first baffle 10 can transmit vibration and automatically adapt to vibration deformation, and seal the edge of the first baffle 10 to ensure that the gas flows according to the set zigzag line.

[0037] Example 4 Based on embodiments 1-3, this embodiment provides a vibration generating mechanism with a specific structure: like Figure 4 As shown, the vibration generating mechanism includes a vibration motor 12 and a vibration transmission shaft 11 fixedly sleeved on the vibration motor 12. The vibration direction of the vibration motor 12 is the same as the axial direction of the vibration transmission shaft 11. One end of the vibration transmission shaft 11 contacts the tank body, and the other end abuts against the elastic pad 15. The combination of the vibration motor 12 and the vibration transmission shaft 11 efficiently transmits vibration energy axially to the baffle plate, with a clear direction and concentrated energy. The end of the vibration transmission shaft 11 abuts against the elastic pad 15, which can absorb excess vibration energy and prevent rigid impact, thereby reducing equipment operating noise and mechanical wear.

[0038] Example 5 Based on embodiments 1-4, this embodiment provides a pressure vessel body 1 with a specific structure, and further defines the specific positions of the outlet flange 2, inlet flange 3, water inlet flange 4, and water outlet flange 5 on it: like Figure 1 , Figure 2As shown, the pressure vessel body 1 includes a top cover 101, a bottom cover 103, and a middle tube shell 102. The top cover 101 and the middle tube shell 102 are detachably connected, and the middle tube shell 102 and the bottom cover 103 are also detachably connected. The bottom cover 103 is fixedly mounted on the base 6. This detachable design of the top cover 101, bottom cover 103, and middle tube shell 102 greatly facilitates regular maintenance, replacement of the heat exchange tubes 8, and maintenance of internal components, reducing the difficulty and cost of later operation and maintenance. The bottom cover 103 being fixed to the base 6 ensures the overall installation stability of the unit.

[0039] The upper end of the side wall of the middle tube shell 102 is provided with an outlet flange 2 for connecting to the outlet end, and the lower end of the side wall of the middle tube shell 102 is provided with an inlet flange 3 for connecting to the inlet end; the side wall of the top cover 101 is provided with a water inlet flange 4, and the bottom of the bottom cover 103 is provided with a water outlet flange 5. The flue gas adopts a bottom-in, top-out flow direction, which forms a counter-current heat exchange with the cooling water flowing from top to bottom, effectively improving the logarithmic mean temperature difference and improving the heat exchange efficiency; the flange interfaces are reasonably arranged, which facilitates on-site pipeline connection and layout installation.

[0040] Example 6 Based on embodiments 1-5, this embodiment provides a specific installation method for the vibration generating mechanism: like Figures 3-4 As shown, multiple mounting parts 7 are arranged along the axial direction of the heat exchange tube 8 on the central tube shell 102. The mounting parts 7 are provided with mounting cavities for fixing and installing the vibration generating mechanism. By arranging the vibration generating mechanism in an independent mounting cavity outside the central cavity, the vibration generating mechanism is not directly exposed to the high-temperature flue gas, thus extending its service life. It also facilitates the external inspection and replacement of the vibration generating mechanism without opening the pressure vessel body 1, making the operation convenient and safe.

[0041] The mounting cavity is connected to the middle cavity, and a heat insulation plate 14 is provided between the mounting cavity and the middle cavity. The heat insulation plate 14 between the mounting cavity and the middle cavity effectively blocks the heat radiation of the high-temperature flue gas in the middle cavity, protects the precision components such as the vibration motor 12 in the mounting cavity, prevents them from failing due to overheating, and improves the reliability of equipment operation. Furthermore, the mounting section 7 includes a flange body 701 and a cover body 702. The flange body 701 communicates with the central cavity, and the cover body 702 is detachably mounted on the flange body 701. A sealing gasket is provided between the cover body 702 and the flange body 701. The mounting section 7 adopts a detachable structure of the flange body 701 and the cover body 702, and together with the sealing gasket, ensures the airtightness of the central cavity and prevents flue gas leakage. When maintenance or replacement of the vibration generating mechanism is required, only the cover body 702 needs to be removed for operation, without disassembling the entire machine, thus improving the convenience and efficiency of maintenance.

[0042] The working principles involved include: During heat exchange, cooling water is introduced into the upper cavity and flows into the lower cavity through multiple heat exchange tubes 8. When the cooling water enters the heat exchange tubes 8, it exchanges heat with the high-temperature gas entering the middle cavity. The high-temperature gas enters the middle cavity from the bottom inlet flange 3 and passes through the center of the first baffle 10 in the middle cavity, and then passes through the edge of the second baffle 9, forming a bent gas path. After a certain period of use and dust accumulation, the vibration motor 12 is started. The vibration motor 12 drives the first baffle 10 to vibrate, and the first baffle 10 further drives the multiple heat exchange tubes 8 to vibrate, thereby shaking off the accumulated dust. Only by starting the vibration motor 12 periodically can the dust accumulation outside the heat exchange tubes 8 be prevented from affecting heat exchange, thus ensuring heat exchange efficiency.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Based on the technical essence of the present invention, any simple modifications, equivalent substitutions, and improvements made to the above embodiments within the spirit and principles of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A vertical heat exchanger that is easy to clean internally, characterized in that, It includes a pressure vessel body (1) and a heat exchange mechanism, an end plate assembly and a baffle assembly disposed within the pressure vessel body (1). There are two end plate assemblies, which are respectively disposed in the upper part and the lower part of the pressure vessel body (1). The end plate assembly divides the pressure vessel body (1) into an upper cavity, a middle cavity and a lower cavity. The heat exchange mechanism is disposed in the middle cavity. The heat exchange mechanism includes a heat exchange tube (8). Both ends of the heat exchange tube (8) are sleeved on the end plate assembly. The end plate assembly includes a floating plate (16) for fixing the end of the heat exchange tube (8) and a fixed support plate (17) for axial and circumferential support of the heat exchange tube (8). The floating plate (16) is located on the outside of the middle cavity, and the fixed support plate (17) is located on the inside of the middle cavity. The mating position between the heat exchange tube (8) and the floating plate (16) is in a sealed state. The edge of the floating plate (16) is provided with an insulating rubber ring (19) for sealing and isolating the middle cavity. The baffle assembly is evenly distributed along the length of the heat exchange tube (8), and the baffle assembly is fitted with a vibration generating mechanism.

2. The vertical heat exchanger for easy internal cleaning according to claim 1, characterized in that, The heat exchange tubes are multiple and arranged in parallel along the axial direction; The fixed support plate (17) has multiple through holes I for the heat exchange tube (8) to pass through. There is a gap between the inner wall of the through hole I and the heat exchange tube (8). The through hole I has a stepped groove at one end near the floating plate (16). An elastic support washer (18) is fitted inside the stepped groove. The elastic support washer (18) provides flexible support between the floating plate (16) and the fixed support plate (17) in the axial direction of the heat exchange tube (8). The elastic support washer (18) provides flexible support between the heat exchange tube (8) and the fixed support plate (17) in the circumferential direction of the heat exchange tube (8).

3. The vertical heat exchanger for easy internal cleaning according to claim 2, characterized in that, The floating plate (16) has multiple through holes II for fixing the heat exchange tube (8), and the through holes II are matched with the through holes I.

4. The vertical heat exchanger for easy internal cleaning according to claim 1, characterized in that, The baffle assembly includes multiple first baffles (10) and multiple second baffles (9). The first baffles (10) and the second baffles (9) are arranged adjacent to each other, and the first baffles (10) and the second baffles (9) are evenly distributed along the length of the heat exchange tube (8). The first baffles (10) are in contact with the vibration generating mechanism.

5. The vertical heat exchanger for easy internal cleaning according to claim 4, characterized in that, The first baffle (10) has a groove at its end for cooperating with the vibration generating mechanism, and a metal elastic support layer (13) for fitting against the inner wall of the middle cavity is sleeved on the outer side of the end of the first baffle (10). A through hole III for the flow of heat exchange medium is provided at the center of the first baffle (10); there is a gap between the outer side of the end of the second baffle (9) and the inner wall of the middle cavity.

6. The vertical heat exchanger for easy internal cleaning according to claim 5, characterized in that, The trough is located at the center of the end of the first baffle (10).

7. The vertical heat exchanger for easy internal cleaning according to claim 6, characterized in that, The vibration generating mechanism includes a vibration motor (12) and a vibration transmission shaft (11) fixedly sleeved on the vibration motor (12). The vibration direction of the vibration motor (12) is the same as the axial direction of the vibration transmission shaft (11). One end of the vibration transmission shaft (11) is in contact with the groove, and the other end abuts against the elastic pad (15).

8. The vertical heat exchanger for easy internal cleaning according to any one of claims 1-7, characterized in that, The pressure vessel body (1) includes a top cover (101), a bottom cover (103) and a middle tube shell (102). The top cover (101) and the middle tube shell (102) are detachably connected, and the middle tube shell (102) and the bottom cover (103) are detachably connected. The bottom cover (103) is fixedly mounted on the base (6). The upper end of the side wall of the middle tube shell (102) is provided with an air outlet flange (2) for connecting to the air outlet end, and the lower end of the side wall of the middle tube shell (102) is provided with an air inlet flange (3) for connecting to the air inlet end; the side wall of the top cover (101) is provided with a water inlet flange (4), and the bottom of the bottom cover (103) is provided with a water outlet flange (5).

9. The vertical heat exchanger for easy internal cleaning according to claim 8, characterized in that, On the middle shell (102), a plurality of mounting parts (7) are arranged along the axial direction of the heat exchange tube (8). The mounting part (7) is provided with a mounting cavity for fixing the vibration generating mechanism. The mounting cavity is connected to the middle cavity. A heat insulation plate (14) is provided between the mounting cavity and the middle cavity.

10. The vertical heat exchanger for easy internal cleaning according to claim 9, characterized in that, The mounting part (7) includes a flange body (701) and a cover body (702). The flange body (701) is connected to the central cavity. The cover body (702) is detachably mounted on the flange body (701). A sealing gasket is provided between the cover body (702) and the flange body (701).

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