Modularized easy-to-clean shell and tube heat exchanger and cleaning method

Abstract

The invention relates to the technical field of heat exchangers, in particular to a modular easy-to-clean shell and tube heat exchanger and a cleaning method.The modular easy-to-clean shell and tube heat exchanger comprises an outer shell, four sets of fan-shaped conduction assemblies detachably installed in the outer shell, and four sets of fan-shaped conduction assemblies detachably installed in the outer shell; the four sets of fan-shaped conduction structures can form a cylindrical structure, and the end face of the cylindrical structure is attached to an annular abutting part arranged on the end cover in a sealed mode. The fan-shaped conduction assembly comprises a first support, a second support and a plurality of flow guide pipes, the first support and the second support are matched with each other to form a connecting frame structure, the flow guide pipes are connected with the connecting frame structure, and when the first support is separated from the second support, every two adjacent flow guide pipes can be separated; and the loading mechanism is arranged between the fan-shaped conduction assembly and the outer shell, the loading mechanism can lock the fan-shaped conduction assembly arranged in the outer shell, and the cleaning difficulty is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and specifically to a modular and easily cleanable shell-and-tube heat exchanger and a cleaning method thereof. Background Art

[0002] As a common heat exchange device, a shell-and-tube heat exchanger mainly consists of a shell, a tube bundle, tube sheets, and tube heads. During operation, one fluid flows inside the tubes, and the other fluid flows between the shell and the tube bundle, and heat exchange occurs through the tube walls. With advantages such as a compact structure, high heat transfer efficiency, and strong adaptability, it is widely used in industries such as petroleum, chemical engineering, and refrigeration.

[0003] However, during long-term operation of a shell-and-tube heat exchanger, a certain amount of attachments will gradually accumulate on the inner and outer walls of the tube bundle, such as scale, oil stains, and microbial deposits. These attachments will significantly reduce the heat exchange efficiency, increase energy consumption, and may even cause equipment failures. Therefore, in order to ensure the heat exchange effect and the long-term stable operation of the equipment, it is essential to regularly clean these attachments.

[0004] For the attachments inside the tube bundle, mechanical cleaning is usually carried out using a special brush rod of a predetermined length. The operator needs to insert the brush rod into the tube bundle and make the brush fully contact the tube wall by repeatedly pushing and pulling or rotating, so as to scrape off the internal dirt. Although this method is relatively cumbersome to operate and requires a certain amount of time and manpower, it can penetrate into the tube bundle to thoroughly remove the attachments, achieve a good cleaning effect, and ensure the smooth flow of the tube-side fluid and the recovery of heat exchange efficiency.

[0005] For the cleaning of the outside of the tube bundle, due to the relatively dense distribution of the tube bundle in the shell, physical cleaning methods are often difficult to fully cover all areas. Traditional physical cleaning means, such as high-pressure water flushing and mechanical brushing, may have many cleaning dead zones due to the too-small gaps between the tubes and the obstruction of components such as baffles. The attachments in these dead zones cannot be effectively removed, which affects the cleaning effect of the entire heat exchanger and thus reduces its subsequent service performance. Summary of the Invention

[0006] The purpose of the present invention is to provide a modular and easily cleanable shell-and-tube heat exchanger and a cleaning method thereof to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A modular and easily cleanable shell-and-tube heat exchanger includes an outer shell, and end caps are detachably installed at both ends of the outer shell. It further includes:

[0009] The sector conduction component is provided with four groups and is detachably installed in the housing body. The four groups of the sector conduction structures can form a cylindrical structure, and the end face of the cylindrical structure is hermetically fitted with an annular abutting portion provided on the end cover.

[0010] The sector conduction component includes a first bracket, a second bracket that cooperate with each other to form a connecting rod structure, and multiple groups of diversion pipes connecting the connecting rod structure. When the first bracket and the second bracket are separated, adjacent two groups of the diversion pipes can be separated.

[0011] As a further scheme of the present invention: a coaxial component is provided between the sector conduction component and the housing body. The coaxial component includes a guiding structure and a coaxial structure that can respectively cooperate with the four groups of the sector conduction components, guide the sector conduction components into the housing body, and make the cylindrical structure coaxial with the housing body.

[0012] As a further scheme of the present invention: the coaxial structure includes a rotating ring provided in the housing body and coaxial with it. Multiple groups of abutting rollers are installed on the rotating ring at equal circumferential intervals, and the end of the rotating ring is slidably fitted with two groups of embedded rings provided on the inner wall of the housing body.

[0013] As a further scheme of the present invention: the guiding structure includes multiple groups of guiding members provided at equal circumferential intervals on the inner wall of the rotating ring. The guiding members are slidably adapted to guiding members provided on the outer wall of the sector conduction component.

[0014] As a further scheme of the present invention: three of the sector conduction components are connected by an abutting structure, and the abutting structure is composed of a convex projection and a card slot;

[0015] One side of one of the sector conduction components is provided with the card slot, one side of another sector conduction component is provided with the convex projection, and both sides of the sector conduction structure located in the middle are respectively provided with the card slot and the convex projection.

[0016] As a further scheme of the present invention: a loading mechanism is provided between the sector conduction component and the housing body. The loading mechanism can lock the sector conduction component placed in the housing body. The loading mechanism includes an elastic component provided on the inner wall of the housing body and a locking member connected to the sector conduction component. A convex shaft is provided on the elastic component, and the convex shaft cooperates with the locking member to axially lock between the annular conduction component and the housing body.

[0017] As a further solution of the present invention: The elastic component includes a hysteresis part fixedly installed on the inner wall of the housing. A slider is slidably installed in the hysteresis part. The slider is connected to the convex shaft, and a pulling spring is connected between the slider and the inner wall of the hysteresis part;

[0018] The elastic component further includes a pulling ring and a protruding part connected to the slider. The protruding part can slide along a hysteresis groove provided on the side wall of the hysteresis part.

[0019] As a further solution of the present invention: A locking groove is provided in the middle of the locking part. A set of inclined surfaces are provided on both sides of the opening of the locking groove. The inclined surfaces can guide the convex shaft into the locking groove when the sector conduction component rotates.

[0020] As a further solution of the present invention: A through hole is provided at one end of the first bracket, and a placing rod is provided at one end of the second bracket. The placing rod can be inserted into the through hole;

[0021] A sector-shaped partition is provided at the end of the first bracket facing the second bracket. The diversion pipe can penetrate through the sector-shaped partition.

[0022] A method for cleaning the modular easy-to-clean shell-and-tube heat exchanger described above includes:

[0023] Step 1: Remove the end cover on the housing on the side of the loading mechanism;

[0024] Step 2: Remove the four groups of sector conduction components in sequence;

[0025] Step 3: Disassemble the first bracket and the second bracket on each group of sector conduction components;

[0026] Step 4: Clean the disassembled first bracket, second bracket, and the diversion pipe connected to the two;

[0027] Step 5: Reverse the execution of Steps 1 to 3 to install the sector conduction component back into the housing.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] First, when the first bracket is separated from the second bracket, it can separate the adjacent two groups of diversion pipes, so that when cleaning, the distance between the diversion pipes installed on the first bracket or the second bracket is larger, which is convenient for cleaning the outside of the diversion pipes, and avoids the existence of cleaning dead corners due to the too small distance between the diversion pipes, affecting the heat exchange effect during subsequent use;

[0030] Secondly, the entire cylindrical structure can be disassembled and installed. On the one hand, this can modularize the cylindrical structure, facilitating subsequent maintenance and replacement. On the other hand, this modularity also means that when cleaning, there are fewer diversion tubes in each group of sector-shaped conduction components, which also reduces the dead corners to a certain extent during cleaning and improves the cleaning effect.

[0031] At the same time, the convex shaft cooperates with the locking groove. On the one hand, it realizes the axial locking of this group of sector-shaped conduction components. On the other hand, it can apply a certain force towards the inside of the housing to ensure that this group of sector-shaped conduction components can be closely attached to the annular abutting part on one side end cover, avoiding the phenomenon that the sector-shaped conduction components slip out of the housing due to the inclination of the head and tail sections of the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 FIG. is a schematic structural diagram of an embodiment of a modular and easily cleanable shell-and-tube heat exchanger.

[0033] Figure 2 FIG. is an exploded view of the structure of an embodiment of a modular and easily cleanable shell-and-tube heat exchanger.

[0034] Figure 3 FIG. is a sectional view of an embodiment of a modular and easily cleanable shell-and-tube heat exchanger.

[0035] Figure 4 FIG. is a schematic diagram of the internal structure of the housing in an embodiment of a modular and easily cleanable shell-and-tube heat exchanger.

[0036] Figure 5 FIG. is a schematic diagram of the structure of the sector-shaped conduction component and the rotating ring in an embodiment of a modular and easily cleanable shell-and-tube heat exchanger.

[0037] Figure 6 FIG. is an exploded view of the structure of the sector-shaped conduction component and the rotating ring in an embodiment of a modular and easily cleanable shell-and-tube heat exchanger.

[0038] Figure 7 FIG. is a schematic diagram of the structure of the elastic component in an embodiment of a modular and easily cleanable shell-and-tube heat exchanger.

[0039] Figure 8 FIG. is a planar development view of the locking part in an embodiment of a modular and easily cleanable shell-and-tube heat exchanger.

[0040] Figure 9 FIG. is a schematic diagram of the structure of four groups of sector-shaped conduction components in an embodiment of a modular and easily cleanable shell-and-tube heat exchanger.

[0041] Figure 10 FIG. is an exploded view of the structure of the first bracket and the second bracket in an embodiment of a modular and easily cleanable shell-and-tube heat exchanger.

[0042] In the figure: 1. Outer housing; 2. End cover; 201. Annular abutting portion; 3. Embedded ring; 4. Rotating ring; 5. Abutting roller; 6. Guide member; 7. Clamping projection; 8. Guide member; 9. Accommodating portion; 901. Accommodating groove; 10. Tensile spring; 11. Slide block; 1101. Protruding portion; 12. Convex shaft; 13. Tensile ring; 14. Locking member; 1401. Inclined surface; 1402. Locking groove; 15. First bracket; 1501. Through hole; 16. Second bracket; 1601. Insertion rod; 17. Diversion pipe; 18. Sector partition; 19. Card slot. Detailed implementation manner

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0044] In addition, an element in the present invention is referred to as being "fixed to" or "disposed on" another element, which can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0045] Please refer to Figures 1 to 10 , in the embodiment of the present invention, a modular and easily cleanable shell-and-tube heat exchanger includes an outer housing 1, and end covers 2 are detachably installed at both ends of the outer housing 1. It further includes: a sector conduction assembly and a loading mechanism.

[0046] Four groups of the sector conduction assemblies are provided and detachably installed in the outer housing 1. The four groups of the sector conduction structures can form a cylindrical structure. The end face of the cylindrical structure is hermetically attached to the annular abutting portion 201 provided on the end cover 2. Among them, an annular groove is provided at one end of the annular abutting portion 201 away from the end cover 2, and an annular sealing ring is provided in the annular groove. When the end cover 2 is installed on the outer housing 1, the annular sealing ring is located between the end face of the cylindrical structure and the annular abutting portion 201 to ensure the sealing performance. In this way, the fluid flowing through the sector conduction assembly can be prevented from entering the outer housing 1, avoiding mixing with the fluid in the outer housing 1, and further preventing mutual contamination between the fluids.

[0047] The sector conduction component includes a first bracket 15, a second bracket 16 that cooperate with each other to form a connecting rod structure, and multiple groups of diversion tubes 17 that connect the connecting rod structure. When the first bracket 15 and the second bracket 16 are separated, adjacent two groups of the diversion tubes 17 can be separated. When the sector conduction component is removed from the outer housing 1, by manually pulling the first bracket 15 and the second bracket 16 to move in the reverse direction, the first bracket 15 and the second bracket 16 can be separated. At this time, the diversion tube 17 connected to the first bracket 15 can be separated from the diversion tube 17 connected to the second bracket 16, so that adjacent two groups of diversion tubes 17 can be separated from each other, making the gap between the diversion tubes 17 remaining on the first bracket 15 and the second bracket 16 larger, thus facilitating subsequent cleaning of the outside of the diversion tubes 17 and avoiding the existence of cleaning dead corners due to the too small gap between adjacent diversion tubes 17 and unable to achieve a good cleaning effect during cleaning.

[0048] A through hole 1501 is provided at one end of the first bracket 15, and a placement rod 1601 is provided at one end of the second bracket 16. The placement rod 1601 can be inserted into the through hole 1501, so that the first bracket 15 and the second bracket 16 can have better torsional resistance, avoiding bending due to the excessive lengths of the two and the diversion tubes 17 and affecting the installation of the sector conduction component into the outer housing 1. Further, through grooves are provided along the length direction of the first bracket 15 and the second bracket 16. Since the first bracket 15 and the second bracket 16 are arranged in a sector shape, by providing the through grooves, the fluid entering the inside of the outer housing 1 from the side of the outer housing 1 can enter the inside of the first bracket 15 and the second bracket 16, and thus come into contact with the diversion tubes 17 and perform heat exchange.

[0049] It should be noted that sealing gaskets are provided on two perpendicular side surfaces of the end faces of the first bracket 15 and the second bracket 16. When the sector conduction component is installed into the outer housing 1, the sealing gaskets can make the end faces of the cylindrical structures formed by multiple groups of sector conduction components form a sealed state.

[0050] A sector partition plate 18 is provided at one end of the first bracket 15 facing the second bracket 16. The diversion tube 17 can penetrate through the sector partition plate 18. Specifically, the sector partition plate 18 is connected to the first bracket 15, and multiple groups of holes for the diversion tubes 17 to penetrate are provided on the sector partition plate 18. On the one hand, these holes can support the diversion tubes 17 connected to the first bracket 15, making it more convenient for these diversion tubes 17 to be inserted into the second bracket 16. On the other hand, before the diversion tubes 17 on the second bracket 16 are inserted into the first bracket 15, they can first be inserted into the holes on the sector partition plate 18, which has a guiding effect on these diversion tubes 17 and makes it more convenient for them to be inserted into the first bracket 15.

[0051] In the present application, a total of four groups of fan-shaped conduction components are provided. These four groups of conduction components can be grouped in pairs and have opposite installation directions during installation. Specifically, the four groups of fan-shaped conduction components are numbered as the first fan-shaped conduction component, the second fan-shaped conduction component, the third fan-shaped conduction component and the fourth fan-shaped conduction component. During installation, the first fan-shaped conduction component and the second fan-shaped conduction component are installed in the forward direction, and the third fan-shaped conduction component and the fourth fan-shaped conduction component are installed in the reverse direction, so that the two groups of fan-shaped baffles 18 on the first fan-shaped conduction component and the second fan-shaped conduction component are staggered with the two groups of fan-shaped baffles 18 on the third fan-shaped conduction component and the fourth fan-shaped conduction component in the outer shell 1. The distribution can play a certain guiding effect on the fluid entering the outer shell 1, so that the fluid flows in the outer shell 1 in an "S" shape, thereby increasing the flow path length of the fluid in the outer shell 1 and improving the heat exchange efficiency and heat exchange effect.

[0052] Based on the above arrangement, when the first bracket 15 is separated from the second bracket 16, the two adjacent groups of guide tubes 17 can be separated, so that when cleaning, the distance between the guide tubes 17 installed on the first bracket 15 or the second bracket 16 is larger, thereby facilitating the cleaning of the outside of the guide tubes 17 and avoiding the existence of cleaning dead corners due to the small distance between the guide tubes 17, which affects the heat exchange effect during subsequent use.

[0053] See also Figure 1 , Figure 6 , Figure 9 A coaxial component is arranged between the fan-shaped conducting component and the outer shell 1, and the coaxial component includes a guiding structure and a coaxial structure which can cooperate with the four groups of the fan-shaped conducting components respectively to guide the fan-shaped conducting components into the outer shell 1 and make the cylindrical structure coaxial with the outer shell 1. Specifically, the coaxial structure includes a rotating ring 4 arranged in the outer shell 1 and coaxial therewith, and a plurality of groups of abutment rollers 5 are circumferentially equidistantly installed on the rotating ring 4, and the ends of the rotating ring 4 are slidably fitted with two groups of embedded rings 3 arranged on the inner wall of the outer shell 1, wherein the abutment rollers 5 are arranged to reduce the rotational resistance of the rotating ring 4 when it rotates relative to the outer shell 1, and the embedded rings 3 are arranged to ensure the stability of the rotating ring 4 in the outer shell 1, and avoid the movement of the rotating ring 4 in the outer shell 1.

[0054] The guide structure includes a plurality of guide members 6 equidistantly arranged on the inner wall of the rotating ring 4 circumferentially, and the guide members 6 are slidably matched with the guide members 8 arranged on the outer wall of the fan-shaped conducting assembly.

[0055] During use, the guide members 8 on multiple sets of sector-shaped conduction components can cooperate with the guide member 6 to guide the sector-shaped conduction components during the installation process into the housing 1, ensuring that the length direction of the sector-shaped conduction components is parallel to the length direction of the housing 1. When multiple sets of sector-shaped conduction components are installed into the rotating ring 4, they can be coaxial with the housing 1, that is, the flow guide tubes 17 can be evenly distributed within the housing 1, ensuring that the fluid within the housing 1 can exchange heat more evenly with the flow guide tubes 17.

[0056] It should also be noted that since multiple sets of sector-shaped conduction components are all installed on the rotating ring 4, when one set of sector-shaped conduction components is locked by the loading mechanism, the remaining sector-shaped conduction components can also be locked, making the sector-shaped conduction components installed in the rotating ring 4 have better stability.

[0057] Furthermore, the installation method for installing the sector-shaped conduction components is a magazine-style installation method. Specifically, first install the first set of sector-shaped conduction components, and then rotate this set of sector-shaped conduction components. When this set of sector-shaped conduction components and the rotating ring 4 rotate 45°, under the action of the loading mechanism, this set of sector-shaped conduction components can be locked. Subsequently, install the second set of sector-shaped conduction components and rotate this second set of sector-shaped conduction components again, so that the first set of sector-shaped conduction components and the second set of sector-shaped conduction components rotate 45° again, and then under the action of the loading mechanism, lock them again. Finally, install the third set and the fourth set of sector-shaped conduction components according to the above method. Based on this installation method, the entire cylindrical structure can be disassembled and installed. On the one hand, this can make the cylindrical structure modular, facilitating subsequent maintenance and replacement. On the other hand, this modularity also makes the number of flow guide tubes 17 in each set of sector-shaped conduction components less during cleaning, and to a certain extent, reduces the dead corners during cleaning and improves the cleaning effect.

[0058] Please refer to Figures 4 to 10 , furthermore, three of the sets of sector-shaped conduction components are connected by an abutting structure, and the abutting structure is composed of a clamping protrusion 7 and a clamping groove 19;

[0059] One side of one set of sector-shaped conduction components is provided with the clamping groove 19, one side of another set of sector-shaped conduction components is provided with the clamping protrusion 7, and both sides of the sector-shaped conduction structure in the middle are respectively provided with the clamping groove 19 and the clamping protrusion 7.

[0060] In this embodiment, after the first set of sector conduction components is installed, a card slot 19 is provided on the side of the first set of sector conduction components facing away from its rotation direction. This enables the card convex 7 on the second set of sector conduction components to be embedded into the card slot 19 on the first set of sector conduction components when the second set of sector conduction components with the card convex 7 on one side is installed. At this time, the second set of sector conduction components forms a stop effect on the first set of sector conduction components. Thus, when the loading mechanism locks the second set of sector conduction components, the first set of sector conduction components will not tend to slide out of the rotating ring 4 due to the inclination of the head and tail ends of the outer housing 1, improving the stability of the sector conduction components already installed in the rotating ring 4.

[0061] Similarly, when the third set of sector conduction components is installed, the card convex 7 on its side can cooperate with the card slot 19 on the side of the second set of sector conduction components to stop the second set of sector conduction components. And after the third set of sector conduction components is locked by the loading mechanism, the third set of sector conduction components can form an axial locking state among the second set of sector conduction components, the first set of sector conduction components and the outer housing 1, ensuring the stability of these three sets of sector conduction components.

[0062] The loading mechanism is arranged between the sector conduction components and the outer housing 1. The loading mechanism can lock the sector conduction components placed in the outer housing 1. The loading mechanism includes an elastic component arranged on the inner wall of the outer housing 1 and a locking member 14 connected to the sector conduction components. A convex shaft 12 is arranged on the elastic component. The convex shaft 12 cooperates with the locking member 14 to axially lock the annular conduction component and the outer housing 1.

[0063] The elastic component includes a retention part 9 fixedly installed on the inner wall of the outer housing 1. A slider 11 is slidably installed in the retention part 9. The slider 11 is connected to the convex shaft 12, and the slider 11 is connected to the inner wall of the retention part 9 through a tension spring 10.

[0064] The elastic component further includes a tension ring 13 and a protruding part 1101 connected to the slider 11. The protruding part 1101 can slide along a retention groove 901 arranged on the side wall of the retention part 9. A locking groove 1402 is arranged in the middle of the locking member 14. A set of inclined surfaces 1401 are arranged on both sides of the opening of the locking groove 1402. The inclined surfaces 1401 can guide the convex shaft 12 into the locking groove 1402 when the sector conduction components rotate.

[0065] During use, when the first set of sector conduction components is installed in the rotating ring 4 and this set of sector conduction components is rotated, the inclined surface 1401 on the locking member 14 connected to this set of sector conduction components can be abutted against the convex shaft 12. At this time, the convex shaft 12 can drive the slider 11 to move away from the pulling spring 10, causing the pulling spring 10 to be further stretched. When this set of sector conduction components is rotated by 45°, the locking groove 1402 is just at the same height as the convex shaft 12. At this time, the pulling spring 10 pulls the slider 11 to move in the reverse direction and pulls the convex shaft 12 into the locking groove 1402, so as to, on the one hand, achieve axial locking of this set of sector conduction components, and on the other hand, apply a certain force towards the inside of the outer housing 1 to this set of sector conduction components, ensuring that this set of sector conduction components can be closely attached to the annular abutting portion 201 on one side end cover 2, and avoiding the phenomenon that the sector conduction components slide out of the outer housing 1 due to the inclination of the head and tail sections of the outer housing 1.

[0066] When installing the second set of sector conduction components, it is necessary to first separate the convex shaft 12 from the locking groove 1402 through the pulling ring 13, and then rotate this set of sector conduction components. And after this set of sector conduction components is rotated into place, the convex shaft 12 can enter the locking groove 1402 again, thereby realizing the locking of the first set of sector conduction components and the second set of sector conduction components, to a certain extent simplifying the number of times of operating the pulling ring 13 and reducing the installation difficulty.

[0067] As an embodiment of the present invention, a method for cleaning the modular and easily cleanable shell-and-tube heat exchanger is also proposed, including:

[0068] Step 1: Remove the end cover 2 on the outer housing 1 on the side of the loading mechanism;

[0069] Step 2: Remove the four sets of sector conduction components in sequence;

[0070] Step 3: Disassemble the first bracket 15 and the second bracket 16 on each set of sector conduction components;

[0071] Step 4: Clean the disassembled first bracket 15, second bracket 16 and the flow guide pipe 17 connected to the two;

[0072] Step 5: Reverse the implementation of Step 1 to Step 3 to install the sector conduction components back into the outer housing 1.

[0073] It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Accordingly, all changes that fall within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0074] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard 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 modular and easy-to-clean shell and tube heat exchanger, comprising an outer shell, with end covers detachably mounted at both ends of the outer shell, characterized in that: Also includes: The fan-shaped conducting assembly is provided with four groups and is detachably installed in the outer shell, and the four groups of the fan-shaped conducting structures can form a cylindrical structure, and the end surface of the cylindrical structure is sealed and fitted with the annular abutment portion provided on the end cover; The fan-shaped conducting assembly includes a first bracket and a second bracket that cooperate with each other to form a connecting structure, and a plurality of groups of guide tubes connecting the connecting structure. When the first bracket is separated from the second bracket, two adjacent groups of guide tubes can be separated.

2. A modular and easy-to-clean shell and tube heat exchanger according to claim 1, characterized in that: A coaxial component is arranged between the fan-shaped conductive component and the outer shell, and the coaxial component includes a guiding structure and a coaxial structure that can cooperate with the four groups of fan-shaped conductive components respectively to guide the fan-shaped conductive components into the outer shell and make the cylindrical structure coaxial with the outer shell.

3. A modular and easy-to-clean shell and tube heat exchanger according to claim 2, characterized in that: The coaxial structure comprises a rotating ring disposed inside the outer shell and coaxial therewith, a plurality of groups of abutting rollers are equidistantly mounted on the rotating ring in a circumferential manner, and the ends of the rotating ring are slidably fitted with two groups of embedded rings disposed on the inner wall of the outer shell.

4. A modular and easy-to-clean shell and tube heat exchanger according to claim 3, characterized in that: The guide structure comprises a plurality of guide members which are equidistantly arranged on the inner wall of the rotating ring in a circumferential manner, and the guide members are slidably matched with the guide members arranged on the outer wall of the fan-shaped conducting assembly.

5. The modular and easy-to-clean shell and tube heat exchanger according to claim 1, characterized in that: The three groups of the fan-shaped conductive components are connected by abutment structures, and the abutment structures are composed of a clamping protrusion and a clamping groove; One side of one group of the fan-shaped conductive components is provided with the card slot, and one side of another group of the fan-shaped conductive components is provided with the card protrusion. The card slot and the card protrusion are respectively provided on both sides of the fan-shaped conductive structure located in the middle.

6. A modular and easy-to-clean shell and tube heat exchanger according to claim 1, characterized in that: A loading mechanism is arranged between the fan-shaped conducting assembly and the outer shell, and the loading mechanism can lock the fan-shaped conducting assembly placed in the outer shell. The loading mechanism includes an elastic assembly arranged on the inner wall of the outer shell and a locking member connected to the fan-shaped conducting assembly. The elastic assembly is provided with a convex shaft, and the convex shaft cooperates with the locking member to enable axial locking between the annular conducting assembly and the outer shell.

7. A modular and easy-to-clean shell and tube heat exchanger according to claim 6, characterized in that: The elastic component comprises a hysteresis portion fixedly mounted on the inner wall of the outer shell, a slider is slidably mounted in the hysteresis portion, the slider is connected to the convex shaft, and the slider is connected to the inner wall of the hysteresis portion via a tension spring; The elastic component further comprises a pulling ring and a protrusion connected to the slider, and the protrusion can slide along a hysteresis groove arranged on the side wall of the hysteresis portion.

8. A modular and easy-to-clean shell and tube heat exchanger according to claim 6, characterized in that: A locking groove is arranged in the middle of the locking member, and a group of inclined surfaces are arranged on both sides of the opening of the locking groove. The inclined surfaces can guide the convex shaft to enter the locking groove when the fan-shaped conducting assembly rotates.

9. A modular and easy-to-clean shell and tube heat exchanger according to claim 1, characterized in that: A through hole is provided at one end of the first bracket, and an insertion rod is provided at one end of the second bracket, and the insertion rod can be inserted into the through hole; A fan-shaped partition is provided at one end of the first bracket facing the second bracket, and the flow guide pipe can pass through the fan-shaped partition.

10. A method for cleaning the modular easy-to-clean shell and tube heat exchanger according to any one of claims 1 to 9, characterized in that: include: Step 1: Remove the end cover on the outer shell on the side of the loading mechanism; Step 2: Remove the four sets of fan-shaped conduction components one by one; Step 3: Disassemble the first bracket and the second bracket on each group of fan-shaped conductive components; Step 4: Clean the disassembled first bracket, second bracket and the guide pipe connected to the two brackets; Step 5: Reverse steps 1 to 3 to install the fan-shaped conduction assembly back into the housing.

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