A high-flux tube heat exchanger convenient to adjust

Abstract

The application discloses a high-flux tube heat exchanger convenient to adjust, and belongs to the technical field of heat exchangers, which comprises a shell, a first tube box and a second tube box, two tube plates are arranged in the shell, a plurality of tube bundles with grooves are arranged on the two tube plates, fixed baffles are further arranged in the shell, movable baffle protection mechanisms are arranged on the side of each fixed baffle, and the tube bundles penetrate through the fixed baffles and the movable baffle protection mechanisms. Through the application, the grooves on the surface of the tube bundles can be cleaned, the grooves can be used for different types of groove structures, have universal applicability, the situation that scale is accumulated in the grooves is effectively avoided, the problem that the tube bundles are locally hardened by scale accumulation is prevented, the thermal resistance barrier caused by the scale layer is eliminated, the fluid flow at the groove position is optimized, compared with the traditional periodical cleaning, the application changes from passive cleaning to active protection, the cleaning period is prolonged, and the maintenance frequency and cost are reduced.

Description

Technical Field

[0001] The present invention relates to a heat exchange device, and more specifically to the technical field of heat exchangers, and more particularly to a high-throughput tube heat exchanger that is easy to adjust. Background Technology

[0002] A heat exchanger is a widely used indirect heat exchanger. Its basic structure consists of a shell, tube bundle, tube sheet, end caps, and baffles / support plates. It mainly achieves temperature regulation through the heat transfer between two fluids inside and outside the tube bundle (i.e., the liquids inside the shell and the liquids inside the tubes). It is widely used in many fields such as chemical, power, food, and refrigeration. Its core function is to transfer heat from a high-temperature fluid to a low-temperature fluid through the heat transfer surface without mixing the two fluids, so as to meet the heating, cooling, condensation, evaporation and other requirements in the process.

[0003] High-flux tube heat exchangers are a type of high-efficiency heat exchange equipment based on high-flux tube (tube bundle) technology. They are mainly used to enhance the heat transfer process inside or outside the tubes. Their core advantage lies in the fact that through special tube surface structure design (such as porous layers, grooves, or fins), the heat transfer area is greatly increased and the fluid turbulence is enhanced, thereby significantly improving the heat exchange efficiency. Compared with traditional heat exchangers, they can reduce the equipment volume or increase the heat load.

[0004] Because the surface of high-throughput tubes is composed of grooves, while these grooves improve heat exchange efficiency, their design also significantly increases the probability of fluid stagnation zones. This makes the bottom of the grooves a point of particle trapping, easily leading to scale buildup. Scale buildup in the grooves forms a "thermal resistance layer," causing a decrease in the heat transfer coefficient. Currently, the main method for treating scale buildup in the grooves is through periodic disassembly and cleaning. The industry standard cleaning cycle is generally around 3 months. If it exceeds 3 months, the scale is prone to hardening (such as calcium and magnesium scale crystallization), increasing the cleaning difficulty and requiring increased cleaning agent dosage (e.g., citric acid dosage increased by 40%), which also increases labor costs. At the same time, if the cleaning force is not properly controlled, the hardened areas are also prone to damage. Furthermore, the crevice environment under the scale easily forms "concentration cells" (such as oxygen concentration difference, ion concentration difference), leading to localized corrosion of the tube material (such as pitting corrosion, crevice corrosion), shortening the tube's service life. Especially in some deep groove locations or tube bundles near the inner wall of the shell (where the axial flow velocity of the medium is slow), "dead zones" are easily formed, sometimes shortening the hardening time of the scale, forming thermal resistance barriers, and increasing fluid resistance. Summary of the Invention

[0005] This invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different approach. The heat exchanger described in this invention, belonging to the category of heat exchange devices, primarily offers an easily adjustable high-throughput tube heat exchanger. This addresses the technical problem mentioned in the background section: the surface grooves of high-throughput tubes easily form fluid stagnation zones, causing the bottom of the grooves to become particle trapping points, resulting in fouling. This fouling forms a "thermal resistance layer," leading to a decrease in the heat transfer coefficient.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0007] A high-throughput tube heat exchanger that is easy to adjust includes a shell, a first tube box, and a second tube box. The two tube boxes are located at the openings at both ends of the shell, and the tube boxes and the shell are detachably connected. Two tube sheets are arranged inside the shell, and multiple tube bundles with grooves are arranged on the two tube sheets. Fixed baffles are also arranged inside the shell. The fixed baffles are arranged at equal intervals and staggered around the central axis of the shell. A moving baffle protection mechanism is arranged on one side near each fixed baffle, and the tube bundles pass through the fixed baffles and the moving baffle protection mechanism.

[0008] The dynamic baffle protection mechanism includes a first plate and a second plate, which are connected by screws. The cavity formed by the first plate and the second plate is provided with multiple flow channels. Each flow channel is provided with multiple limiting holes with raised edges. The tube bundle passes through the limiting holes. Each limiting hole is provided with an annular cleaning component, which can clean the scale layer in the groove.

[0009] Preferably, the grooves on the outer wall of the tube bundle are spiral grooves;

[0010] And / or, the grooves on the outer wall of the tube bundle are circular grooves of varying sizes;

[0011] And / or, the grooves on the outer wall of the tube bundle are strip-shaped grooves formed by the gaps between the fins.

[0012] Preferably, the annular cleaning assembly includes a base, a rotating cover, and an annular top frame. The round rod portion of the annular top frame passes through a round hole in the base. Multiple blades are evenly spaced around the outer wall of the rotating cover. A first annular brush, a second annular brush, and a third annular brush are sequentially arranged inside the base. The bristles of the first annular brush are conical and are used to clean tube bundles with spiral grooves. The bristles of the second annular brush are hook-shaped and are used to clean tube bundles with circular grooves of varying sizes. The bristles of the third annular brush are sheet-like and are used to clean tube bundles with strip grooves.

[0013] Preferably, the outer walls of the first, second, and third annular brushes are provided with locking blocks, and each locking block is engaged with a locking groove, which is located on the annular inner wall of the base.

[0014] Preferably, the outer wall of the base is provided with an annular opening and multiple limiting grooves. The limiting grooves are distributed around the base at equal intervals. One end of each limiting groove is connected to the annular opening. The limiting grooves are slidably connected to limiting blocks, and the limiting blocks are located at the lower edge of the inner wall of the rotating cover. Multiple combing rods are arranged around the upper edge of the inner wall of the rotating cover at equal intervals. The combing rods pass through the bristles of three annular brushes. A return spring is sleeved at the annular opening. When the limiting block moves to the annular opening, it can compress the return spring.

[0015] Preferably, a flow guide is provided between each two adjacent annular cleaning components. The flow guide is located in the flow channel of the first plate. Multiple drainage holes are provided at the edge of the first plate, and the cross-section of the drainage holes is a frustum structure with a large inner radius and a small outer radius.

[0016] Preferably, each of the moving deflector protection mechanisms on the same side is provided with a connecting rod, and the connecting rod passes through the corresponding fixed deflector.

[0017] Preferably, a sealing plate is provided inside the first tube box, and a pusher is movably connected to each of the two through holes on the sealing plate. Both pushers are connected to the interfaces on the corresponding dynamic baffle protection mechanisms. A cylinder is provided on one side of the outer wall of the first tube box, and a movable frame is provided at the output end of the cylinder. The interface on the movable frame is connected to one end of the two pushers.

[0018] Preferably, the first pipe box and the second pipe box are respectively provided with a first water inlet and a first water outlet.

[0019] Preferably, a second water inlet and a second water outlet are respectively provided on both sides of the outer wall of the shell.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] (1) This invention, through the set shell, tube bundle, tube box, tube sheet, fixed baffle, moving baffle protection mechanism, annular cleaning component, connecting rod, sealing plate, push frame, cylinder and moving frame, realizes the cleaning of the grooves on the surface of the tube bundle, effectively avoids the accumulation of scale in the grooves, thereby preventing the problem of local scale hardening in the tube bundle. It eliminates the need for workers to forcibly clean the hardened parts during the subsequent cleaning process, reduces labor intensity, and avoids damage to the tube bundle caused by cleaning the hardened parts. At the same time, it eliminates the thermal resistance barrier caused by scale, optimizes the fluid flow in the groove, enhances the fluid turbulence, increases the Reynolds number, further enhances the heat transfer capacity, indirectly reduces the power consumption in the shell side, prevents fluid blockage in the groove caused by scale, and prevents the external power equipment from increasing the head and energy consumption. It also avoids the problem of local corrosion of the tube material caused by the formation of "concentration cells" in the gap environment under the scale. Compared with the traditional periodic cleaning method, it changes from "passive cleaning" to "active protection", extends the cleaning cycle, reduces the maintenance frequency, and greatly improves the service life of the tube material.

[0022] (2) The invention, through the first plate, second plate, flow channel, limiting hole, guide part, drain hole, base, rotating cover and blade, realizes that during the flow of liquid medium along the shell side (i.e. "S-shaped" flow mode), the water inlet side of the flow channel in each dynamic baffle protection mechanism can well bear the force of the liquid deflection each time, providing driving force for the rotation of the annular cleaning assembly, so that the annular cleaning assembly rotates around the corresponding tube bundle for cleaning, so as to utilize the force provided by the liquid medium, improve the energy efficiency and save costs. Moreover, due to the function of the guide part, the liquid in each flow channel washes the blades on different bases one after another, reducing the interference between different annular cleaning assemblies, ensuring the stable rotation of each annular cleaning assembly, and ensuring the cleaning effect.

[0023] Furthermore, the conical bristles of the first annular brush dynamically fit the spiral angle of the spiral groove when cleaning it. During rotation, they can scrape along the axial and radial directions of the groove simultaneously, using the generated axial thrust to remove impurities from the spiral groove. The hook-shaped bristles of the second annular brush can use the centrifugal force during rotation to hook out stubborn scale (such as calcium sulfate crystals) in deep holes when cleaning circular grooves, solving the problem of traditional straight bristles "reaching but not scraping off". Moreover, the conical bristles and hook-shaped bristles work together to "loosen and then hook out" the scale, further improving the cleaning effect of the groove. The sheet-like bristles of the third annular brush can better fit the strip grooves formed by the gaps between the fins. During rotation, they cut into the gaps like a comb, peeling off the thin layer of dust or biofilm on the surface of the fins. Compared with circular bristles, the cleaning effect is better, with less residue in the gaps. It can be used for different types of groove structures and has universal applicability.

[0024] (3) The present invention, through the base, limiting groove, annular opening, rotating cover, limiting block, combing rod, blade, annular top frame and spring, realizes that when the moving baffle protection mechanism finishes each reciprocating linear movement (i.e. each time it returns to the corresponding fixed baffle position), the limiting block will disengage from the limiting groove and enter the annular opening, so that the bristles on the base no longer rotate, only the rotating cover rotates by itself, and the combing rod on the rotating cover will simultaneously agitate and comb the bristles of the three annular brushes, cleaning out the scale and impurity particles in the bristles, avoiding the problem of "secondary pollution" caused by these residual dirt being carried back into the tube bundle groove with the next reciprocating movement of the bristles, thereby further improving the cleaning efficiency, and has a good combing effect on the fiber entanglement or local knotting between the bristles, which is conducive to maintaining the bristle shape and extending the service life, avoiding the decrease in bristle elasticity and irregular shape caused by long-term entanglement and knotting, affecting the adhesion to the inner wall of the tube bundle groove, and causing the inability to reach the bottom of the groove for cleaning, eliminating the need for staff to clean the bristles regularly, reducing maintenance costs.

[0025] (4) By setting up a first plate, a second plate, a connecting rod, a pusher, a cylinder and a moving frame, the present invention enables the moving baffle protection mechanism to move to the side of the corresponding fixed baffle when the grooves on the tube bundle are not cleaned, so that the baffle protection mechanism and the fixed baffle are closely attached and overlapped, which will not interfere with the flow direction of the liquid medium in the shell side, so that the fluid medium can maintain the original "S-shaped" flow pattern, effectively reducing the impact of the moving baffle protection mechanism on the water flow disturbance, and ensuring the heat exchange efficiency to a certain extent.

[0026] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is an exploded view of the overall structure of the present invention;

[0029] Figure 3 This is a schematic diagram showing the connection relationship between the connecting rod, the pushing rod, the tube bundle, and the fixed baffle plate of the present invention;

[0030] Figure 4 This is a schematic diagram of the dynamic baffle protection mechanism of the present invention;

[0031] Figure 5 This is an exploded view of the dynamic baffle protection mechanism of the present invention;

[0032] Figure 6 This is an exploded view of the annular cleaning component of the present invention;

[0033] Figure 7 This is a schematic diagram of the rotating cover structure of the present invention;

[0034] Figure 8 This is a schematic diagram of the base structure of the present invention;

[0035] Figure 9 These are schematic diagrams of different groove structures on the surface of the tube bundle according to the present invention;

[0036] Figure 10 This is a schematic diagram of the annular brush structure with different bristles according to the present invention;

[0037] Figure 11 This is a schematic diagram of the shell-side liquid flow direction of the present invention.

[0038] In the diagram: 1. Shell; 11. Tube bundle; 12. First tube box; 121. First inlet; 13. Second tube box; 131. First outlet; 14. Second inlet; 15. Second outlet; 16. Tube sheet; 17. Fixed baffle; 2. Moving baffle protection mechanism; 21. First plate; 22. Second plate; 23. Flow channel; 24. Limiting hole; 25. Flow guide; 26. Drain hole; 3. Annular cleaning... Components; 31, base; 311, slot; 312, limiting slot; 313, annular opening; 32, rotating cover; 321, limiting block; 322, combing rod; 33, blade; 34, first annular brush; 35, second annular brush; 36, third annular brush; 37, locking block; 38, annular top frame; 39, return spring; 4, connecting rod; 5, sealing plate; 51, pushing frame; 52, moving frame; 6, cylinder. Detailed Implementation

[0039] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] Example 1, please refer to the appendix for details. Figure 1-11 As shown, a high-throughput tube heat exchanger that is easy to adjust includes a shell 1, a first tube box 12, and a second tube box 13. The two tube boxes are located at the openings at both ends of the shell 1, and the tube boxes and the shell 1 are detachably connected. Two tube sheets 16 are arranged inside the shell 1, and multiple tube bundles 11 with grooves are arranged on the two tube sheets 16. Fixed baffles 17 are also arranged inside the shell 1. The fixed baffles 17 are arranged at equal intervals and staggered around the central axis of the shell 1. A moving baffle protection mechanism 2 is provided on one side near each fixed baffle 17. The tube bundle 11 passes through the fixed baffle 17 and the moving baffle protection mechanism 2; the moving baffle protection mechanism 2 includes a first plate 21 and a second plate 22, which are connected by screws. The cavity formed by the first plate 21 and the second plate 22 is provided with a plurality of flow channels 23, and each flow channel 23 is provided with a plurality of limiting holes 24 with protruding edges. The tube bundle 11 passes through the limiting holes 24, and each limiting hole 24 is provided with an annular cleaning component 3, which can clean the scale layer in the groove.

[0043] The above structure enables the cleaning of the grooves on the surface of the tube bundle 11 and can be used for different types of groove structures, exhibiting universal applicability. It effectively avoids scale buildup in the grooves, thereby preventing local scale hardening in the tube bundle 11, eliminating thermal resistance barriers caused by scale, optimizing fluid flow in the groove location, enhancing fluid turbulence, further strengthening heat transfer capacity, indirectly reducing power consumption in the shell side, and preventing pumps (such as circulating water pumps) from increasing head and energy consumption due to fluid blockage in the grooves caused by scale buildup. Compared with traditional periodic cleaning, it shifts from "passive cleaning" to "active protection," extending the cleaning cycle, reducing maintenance frequency, and reducing the likelihood of localized corrosion (such as pitting corrosion and crevice corrosion) in the pipe due to the easily formed "concentration cells" (such as oxygen concentration difference and ion concentration difference) in the crevice environment under scale, thus shortening the pipe's service life.

[0044] Example 2, please refer to the appendix for details. Figure 1 , 2As shown in Figure 3, connecting rods 4 are provided between the moving baffle protection mechanisms 2 on the same side, and the connecting rods 4 pass through the corresponding fixed baffles 17. Through the connecting rods 4, the moving baffle protection mechanisms 2 can move synchronously. A sealing plate 5 is provided inside the first tube box 12. A pusher 51 is movably connected to each of the two through holes on the sealing plate 5, and the two pushers 51 are connected to the interfaces on the corresponding moving baffle protection mechanisms 2. A cylinder 6 is provided on one side of the outer wall of the first tube box 12. A moving frame 52 is provided at the output end of the cylinder 6. The interface on the moving frame 52 is connected to one end of the two pushers 51. Through the cylinder 6, the moving frame 52 and the pusher 51, the moving baffle protection mechanism 2 can move synchronously. The cooperation between the two provides a driving force for the linear movement of the dynamic baffle protection mechanism 2. The first tube box 12 and the second tube box 13 are respectively provided with a first inlet 121 and a first outlet 131. The liquid medium in the tube side will enter between the sealing plate 5 and the tube sheet 16 from the first inlet 121, and then flow into the tube bundle 11, and then flow out from the first outlet 131. The outer walls of the shell 1 are respectively provided with a second inlet 14 and a second outlet 15. The liquid medium in the shell side flows into the shell 1 from the second inlet 14, and under the action of the fixed baffle 17, it flows in an S-shape, and then flows out from the second outlet 15.

[0045] Example 3, please refer to the appendix for details. Figure 4 , 5 As shown in Figure 9, a flow guide 25 is provided between each pair of adjacent annular cleaning components 3. The flow guide 25 is located in the flow channel 23 of the first plate 21. Through the flow guide 25, the flow direction of the liquid medium is controlled, so that the liquid successively washes different annular cleaning components 3 in the same flow channel 23. Multiple drainage holes 26 are provided at the edge of the first plate 21, and the cross-section of the drainage hole 26 is a frustum structure with a large inner radius and a small outer radius. Through the frustum structure design of the drainage hole 26, the surface tension and viscous resistance of water significantly hinder the flow at the narrow opening, thereby reducing the inflow of water from the narrow opening side and avoiding interference with the rotation of the annular brush. The groove on the outer wall of the tube bundle 11 is a spiral groove; and / or, the groove on the outer wall of the tube bundle 11 is a circular groove of different sizes; and / or, the groove on the outer wall of the tube bundle 11 is a strip groove formed by the gap between the fins.

[0046] Example 4, please refer to the appendix for details. Figure 6 , 7As shown in Figures 8 and 10, the annular cleaning assembly 3 includes a base 31, a rotating cover 32, and an annular top frame 38. The round rod portion of the annular top frame 38 passes through a round hole on the base 31. Multiple blades 33 are evenly spaced around the outer wall of the rotating cover 32. These blades 33 receive the force of the water flow, thus driving the annular cleaning assembly 3 to rotate as a whole. A first annular brush 34, a second annular brush 35, and a third annular brush 36 are sequentially arranged inside the base 31. The bristles of the first annular brush 34 have a conical structure and are used to clean the tube bundle 11 with spiral grooves. The bristles of the second annular brush 35 have a hook structure and are used to clean the tube bundle 11 with circular grooves of varying sizes. The bristles of the third annular brush 36... The brush has a sheet-like structure and is used to clean tube bundles 11 with strip grooves. Different types of bristles can be used for different types of groove structures, improving its versatility. The bristles of different structures have a certain synergistic mechanism, which can further improve the cleaning effect through mutual cooperation. The outer walls of the first annular brush 34, the second annular brush 35 and the third annular brush 36 are all provided with locking blocks 37. Each locking block 37 is engaged with a locking groove 311. The locking groove 311 is set on the annular inner wall of the base 31. Through the mutual cooperation between the locking blocks 37 and the locking grooves 311, a detachable connection between the annular brush and the base 31 is realized, while ensuring that the annular brush rotates synchronously when the base 31 rotates.

[0047] The outer wall of the base 31 is provided with an annular opening 313 and multiple limiting grooves 312. The limiting grooves 312 are evenly spaced and arranged around the perimeter. One end of each limiting groove 312 is connected to the annular opening 313. The limiting grooves 312 are slidably connected to limiting blocks 321, and the limiting blocks 321 are located at the lower edge of the inner wall of the rotating cover 32. Multiple combing rods 322 are evenly spaced around the upper edge of the inner wall of the rotating cover 32, and the combing rods 322 penetrate the bristles of three annular brushes. Through the mutual cooperation between the annular top frame 38, the limiting blocks 321, the limiting grooves 312 and the annular opening 313, it is achieved that in the initial position (i.e., when the moving baffle protection mechanism 2 is in close contact with the corresponding fixed baffle 17), one side of the annular top frame 38 is in close contact with the fixed baffle 17, and the other side is... This causes the limiting block 321 on the rotating cover 32 to disengage from the limiting groove 312 and move into the annular opening 313. At this time, the annular brush does not rotate, and the rotating cover 32 rotates on its own under the action of water flow. The combing rod 322 cleans the bristles of the three annular brushes, removing impurities, scale, or clumps from the bristles to prevent them from re-entering the grooves of the high-throughput heat exchange tube. A reset spring 39 is sleeved at the annular opening 313. When the limiting block 321 moves to the annular opening 313, it can squeeze the reset spring 39. Through the reset spring 39, when the moving baffle protection mechanism 2 leaves the corresponding fixed baffle 17, the reset spring 39 will push the limiting block 321 back into the limiting groove 312, so that the rotating cover 32 drives the three annular brushes on the base 31 to rotate synchronously.

[0048] The specific operation is as follows: The liquid medium enters the housing 1 through the second inlet 14. Under the action of the fixed baffle 17, the liquid medium flows in an S-shaped pattern and then flows out through the second outlet 15. Subsequently, the water flow enters through the flow channel 23 of the moving baffle protection mechanism 2. Under the action of the guide section 25, it sequentially washes the annular cleaning components 3. Due to the action of the blades 33, the rotating cover 32 can drive the annular brush on the base 31 to rotate synchronously through the cooperation between the limiting block 321 and the limiting groove 312, achieving the purpose of rotating the annular cleaning component 3 on the limiting hole 24. The bristles of the annular brush will contact the grooves on the tube bundle 11, rotating and cleaning. Simultaneously, the cylinder 6 is opened. Under the action of the moving frame 52, the pushing frame 51, and the connecting rod 4, the moving baffle protection mechanisms 2 located on both sides inside the housing 1 move synchronously and linearly, providing an axial force to the annular brush. This allows each moving baffle protection mechanism 2 to reciprocate linearly along the direction of the tube bundle 11, and each time it moves to the initial position... When positioned, i.e., on one side of the corresponding fixed baffle 17, the annular top frame 38 will first contact one side of the fixed baffle 17, and then the other side will push the rotating cover 32, causing the limiting block 321 on the rotating cover 32 to disengage from the limiting groove 312 and enter the annular opening 313. The limiting block 321 compresses the return spring 39. Since the limiting block 321 and the limiting groove 312 are separated, the rotating cover 32 will no longer drive the annular brush on the base 31 to rotate. The rotating cover 32 rotates on its own, and the combing rod 3 on the rotating cover 32 will rotate accordingly. 22 will agitate and comb the bristles to remove scale and impurities embedded in them, preventing them from re-entering the grooves of the tube bundle 11. When the moving baffle protection mechanism 2 performs the next cleaning, the annular top frame 38 will move away from the corresponding fixed baffle 17, and the return spring 39 will deform and reset, pushing the limit block 321 back into the limit groove 312. Then, the rotating cover 32 will drive the annular brush on the base 31 to clean, so that the bristles can be cleaned at the end of each reciprocating cleaning cycle.

[0049] The present invention has been described by way of example. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A high-throughput tube heat exchanger that is easy to adjust, comprising a shell (1), a first tube box (12), and a second tube box (13), the two tube boxes being located at the openings at both ends of the shell (1), and the tube boxes and the shell (1) being detachably connected, wherein two tube sheets (16) are provided inside the shell (1), characterized in that Multiple tube bundles (11) with grooves are provided on both tube sheets (16). A fixed baffle (17) is also provided inside the shell (1). The fixed baffles (17) are arranged at equal intervals based on the central axis of the shell (1). A moving baffle protection mechanism (2) is provided on the side close to each fixed baffle (17). The tube bundles (11) pass through the fixed baffles (17) and the moving baffle protection mechanism (2). The dynamic baffle protection mechanism (2) includes a first plate (21) and a second plate (22). The first plate (21) and the second plate (22) are connected by screws. The cavity formed by the first plate (21) and the second plate (22) is provided with multiple flow channels (23). Each flow channel (23) is provided with multiple limiting holes (24) with raised edges. The tube bundle (11) passes through the limiting holes (24). Each limiting hole (24) is provided with an annular cleaning component (3). The annular cleaning component (3) can clean the scale layer in the groove. The annular cleaning assembly (3) includes a base (31), a rotating cover (32), and an annular top frame (38). The round rod portion of the annular top frame (38) passes through the round hole on the base (31). Multiple blades (33) are arranged around the outer wall of the rotating cover (32) at equal intervals. A first annular brush (34), a second annular brush (35), and a third annular brush (36) are arranged sequentially inside the base (31). The bristles of the first annular brush (34) are conical and are used to clean tube bundles (11) with spiral grooves. The bristles of the second annular brush (35) are hook-shaped and are used to clean tube bundles (11) with circular grooves of different sizes. The bristles of the third annular brush (36) are sheet-like and are used to clean tube bundles (11) with strip grooves. The outer wall of the base (31) is provided with an annular opening (313) and multiple limiting grooves (312). The limiting grooves (312) are distributed around the annular opening (313) at equal intervals. One end of each limiting groove (312) is connected to the annular opening (313). The limiting grooves (312) are slidably connected to limiting blocks (321), and the limiting blocks (321) are located at the lower edge of the inner wall of the rotating cover (32). Multiple combing rods (322) are arranged around the upper edge of the inner wall of the rotating cover (32) at equal intervals. The combing rods (322) penetrate the bristles of the three annular brushes. A return spring (39) is sleeved at the annular opening (313). When the limiting block (321) moves to the annular opening (313), it can squeeze the return spring (39). A guide section (25) is provided between each two adjacent annular cleaning components (3). The guide section (25) is located in the flow channel (23) of the first plate (21). Multiple drainage holes (26) are provided at the edge of the first plate (21), and the cross section of the drainage hole (26) is a frustum structure with a large inner radius and a small outer radius. The first tube box (12) is provided with a sealing plate (5). The two through holes on the sealing plate (5) are movably connected to push frames (51), and the two push frames (51) are connected to the interface on the corresponding dynamic baffle protection mechanism (2). A cylinder (6) is provided on one side of the outer wall of the first tube box (12). A moving frame (52) is provided at the output end of the cylinder (6). The interface on the moving frame (52) is connected to one end of the two push frames (51).

2. The easily adjustable high-throughput tube heat exchanger according to claim 1, characterized in that, The grooves on the outer wall of the tube bundle (11) are spiral grooves; And / or, the grooves on the outer wall of the tube bundle (11) are circular grooves of varying sizes; And / or, the grooves on the outer wall of the tube bundle (11) are strip-shaped grooves formed by the gaps between the fins.

3. The easily adjustable high-throughput tube heat exchanger according to claim 1, characterized in that, The outer walls of the first annular brush (34), the second annular brush (35) and the third annular brush (36) are provided with locking blocks (37), and each locking block (37) is engaged with a locking groove (311), which is provided on the annular inner wall of the base (31).

4. A high-throughput tube heat exchanger that is easy to adjust according to claim 1, characterized in that, A connecting rod (4) is provided between the moving baffle protection mechanisms (2) on the same side, and the connecting rod (4) passes through the corresponding fixed baffle (17).

5. A high-throughput tube heat exchanger that is easy to adjust according to claim 1, characterized in that, The first pipe box (12) and the second pipe box (13) are respectively provided with a first water inlet (121) and a first water outlet (131).

6. A high-throughput tube heat exchanger that is easy to adjust according to claim 1, characterized in that, The outer wall of the shell (1) is provided with a second water inlet (14) and a second water outlet (15) on both sides.

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