High-efficiency heat pipe heat exchanger

Abstract

The application discloses a kind of high-efficiency heat exchange tube heat exchangers, belong to the technical field of heat exchanger, including shell, first tube box and second tube box, cavity formed by shell and tube box is provided with composite heat exchange tube and baffle, composite heat exchange tube one end is provided with two tube sheets, each composite heat exchange tube includes heat exchange sleeve, first inner lining pipe and second inner lining pipe, filter cartridge is arranged in first inner lining pipe, impurity cleaning mechanism that can linearly move is arranged in filter cartridge, the trigger type collection mechanism is arranged in the end away from second inner lining pipe of first inner lining pipe, by the application, it is realized when fluid heat exchange, timely remove the scale particles that separate in heat exchange tube, avoid its backflow pipe course form scale layer, guarantee heat exchange efficiency, improve tube flow fluid purity simultaneously, reduce subsequent scale separation, extend cleaning interval, reduce the interference to fluid, composite structure increases tube flow fluid path, prolongs heat exchange time to improve efficiency, and shorten equipment length, reduce space occupation.

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-efficiency heat exchange tube heat exchanger. Background Technology

[0002] A heat exchanger is a device that enables heat transfer between fluids at different temperatures through a solid wall. It is widely used in chemical, power, and refrigeration industries, and can perform functions such as fluid heating, cooling, and condensation. Its main components include core heat transfer elements (heat exchange tubes for heat transfer, tube sheets to fix the heat exchange tubes and separate the fluids), fluid guiding and separating components (the shell contains the shell-side fluid, the end caps and tube boxes guide the tube-side fluid, and baffles change the flow direction of the shell-side fluid to enhance heat transfer), and auxiliary components (such as pipes connecting to external pipelines, supports for the equipment, seals to prevent leakage, and expansion joints to absorb thermal expansion and contraction under high temperature and high pressure). These components work together to ensure that the fluid flows along the designed path and efficiently completes heat exchange.

[0003] Heat exchange tubes are the core components of a heat exchanger that enable heat transfer. They are typically hollow tubular structures, and the material is selected based on the properties of the fluid. Their working principle is as follows: two fluids at different temperatures flow inside the tube (tube side) and outside the tube (shell side), respectively. Heat is transferred from the high-temperature fluid to the low-temperature fluid through the tube wall, thus completing the heat exchange. At the same time, the two ends of the heat exchange tubes are fixed to the tube sheet, which not only ensures the separation of the fluid between the tube side and the shell side (avoiding cross-flow), but also provides an efficient path for heat transfer through its own structure.

[0004] After a period of use, dissolved minerals and impurities in the water will precipitate and adhere to the tube wall surface under certain conditions, forming scale. Because scale has extremely low thermal conductivity, it forms a thermal resistance layer on the tube wall, significantly reducing the heat transfer efficiency between the fluid inside and outside the tube. This leads to a decrease in the heat exchanger's heat exchange capacity, making it difficult to achieve the designed heating or cooling effect. For the tube side, although some of the scale formed inside the heat exchange tube can be washed away by the water flow, these scale impurities will flow back into the heat exchange tube after external circulation and continue to accumulate, eventually forming a difficult-to-clean scale layer. To ensure the working efficiency of the heat exchange tube, staff need to clean it regularly: the outer wall of the heat exchange tube can be wiped directly, making cleaning relatively easy, while cleaning the inner wall is very inconvenient, requiring the use of a long-handled brush. Furthermore, the heat exchange equipment must be paused during cleaning, which consumes equipment operating time and reduces overall work efficiency. 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 pertains to heat exchange devices and primarily offers a high-efficiency heat exchange tube heat exchanger. This addresses the technical problem mentioned in the background section where scale formed inside the heat exchange tubes cannot be promptly removed from the tube side, resulting in its accumulation on the inner wall of the heat exchange tubes, forming a difficult-to-clean scale layer that necessitates shutdown for repair.

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

[0007] A high-efficiency heat exchanger tube includes a shell, a first tube box, and a second tube box. The shell and the tube boxes are detachably connected. Multiple composite heat exchange tubes and baffles are arranged within the cavity formed by the shell and the tube boxes, with the baffles staggered along the length of the composite heat exchange tubes. Two parallel tube sheets are provided at one end of each composite heat exchange tube. Each composite heat exchange tube includes a heat exchange sleeve, a first inner liner tube, and a second inner liner tube. The heat exchange sleeve and the first inner liner tube are connected at one end by bolts, forming a space for fluid medium flow between the heat exchange sleeve and the two inner liner tubes. A filter cartridge with open ends is provided inside the first inner liner tube, and a linearly movable impurity cleaning mechanism is provided inside the filter cartridge. A trigger-type collection mechanism is provided at the end of the first inner liner tube away from the second inner liner tube, allowing impurity particles precipitated in the fluid to be promptly sent to the trigger-type collection mechanism.

[0008] Preferably, a connecting plate is provided between the first inner liner tube and the second inner liner tube, and a cylinder is provided on the connecting plate. The output end of the cylinder is connected to the impurity cleaning mechanism. A sealing cover is provided outside the cylinder, and the sealing cover and the connecting plate are connected by threads.

[0009] Preferably, the first inner liner tube has a plurality of through holes arranged at equal intervals around it, and a first return spring and a spiral plate are sleeved on the outer wall of the first inner liner tube. One end of the first return spring is connected to the spiral plate, and the other end of the first return spring is connected to the folded edge of the outer wall of the first inner liner tube. The inner edge and outer edge of the spiral plate are respectively attached to the outer wall of the inner liner tube and the inner wall of the heat exchange sleeve.

[0010] Preferably, the connecting plate is provided with a plurality of water inlet holes at equal intervals, and the water inlet holes are located in the gap between the sealing cover and the second inner liner tube.

[0011] Preferably, the impurity cleaning mechanism includes a movable block with a concave shape on one side forming a frustum. A rotating ring is provided at the central axis of the movable block. Spiral blades and cleaning components are respectively provided on both sides of the rotating ring. The cleaning component includes a rotating frame and multiple spaced brushes. The brushes contact the inner wall of the filter cylinder. A sliding bearing is provided on the inner wall of the rotating ring. A connecting block is provided on the inner wall of the sliding bearing. An interface on one side of the connecting block is connected to the cylinder output end. A push rod is provided on the other side of the connecting block.

[0012] Preferably, the inner recess of the movable block is provided with a plurality of filter holes at equal intervals, each groove on the outer wall of the movable block is provided with a ball bearing module, and the length of the movable block is greater than the length of the through hole.

[0013] Preferably, the trigger-type collection mechanism includes a collection box with a cross-sectional radius equal to that of the tube sheet. The collection box has multiple mounting ports, and each mounting port contains a trigger component. The trigger component includes a first cylinder and a second cylinder, which are detachably connected. The first cylinder has a trigger hole and multiple drain holes, which are connected to each other. A plug is movably connected to the trigger hole, and a second return spring is mounted on the plug. The second return spring is located in a groove in the second cylinder.

[0014] Preferably, a shaft seal is provided between the second cylinder and the mounting port, and multiple discharge holes are provided on the second cylinder. The discharge holes connect the cavity formed by the two cylinders to the collection box. A sewage pipe is provided on the collection box, and the sewage pipe passes through the second pipe box.

[0015] Preferably, a first water inlet and a first water outlet are respectively provided on the upper and lower sides of the shell.

[0016] Preferably, the second tube box is provided with a second inlet and a second outlet, with the second outlet located between the two tube sheets.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] (1) By setting up a heat exchange sleeve, a first inner liner tube, a through hole, a second inner liner tube, a connecting plate and a water inlet, the present invention increases the flow path of the fluid in the tube, so that the fluid flows back and forth in the heat exchange tube, thereby extending the residence time of the fluid in the tube, providing more time for heat exchange, increasing the heat exchange per unit time, and substantially improving the heat exchange efficiency. In addition, under the premise of ensuring the heat exchange effect, the coaxial nested design of the tube in this structure can also effectively shorten the overall length of the equipment, reduce the occupation of installation space, and provide convenience for the compact layout and space utilization of the equipment, especially suitable for industrial scenarios with limited space.

[0019] Furthermore, the interaction between the first return spring, the spiral plate, the sealing cover, and the cylinder allows the fluid to flow in a spiral direction during the return stroke, further increasing the flow path and improving heat exchange efficiency. The centrifugal force generated by the spiral motion of the fluid in the gap between the heat exchange sleeve and the inner liner tube can continuously scour the pipe wall, reducing the adhesion of scale particles. At the same time, the turbulent state of the spiral flow can carry away the newly precipitated micro-impurities, reducing the probability of scale formation. In addition, the spiral plate periodically sways along the pipe direction (axial vibration), causing the scale on the connection between the spiral plate and the heat exchange sleeve and the inner liner tube (dead corners, areas prone to scaling) to break down and be discharged with the fluid, avoiding accumulation. This dynamic cleaning does not require machine shutdown, which reduces the frequency of manual cleaning and avoids the interference of traditional disassembly and cleaning on equipment operation.

[0020] (2) By setting up a moving block, rotating ring, cleaning component, sliding bearing, connecting block, top rod, spiral blade, ball bearing module and cylinder, the present invention enables the filter cartridge to intercept the scale impurities precipitated in the fluid after the first inner liner tube, and can clean them in time so that they can be directly removed from the tube side. This blocks the path of scale back to the heat exchange tube from the source, avoids the problem of scale accumulating on the inner wall of the heat exchange tube to form a stubborn scale layer, ensures the high efficiency of heat transfer, and ensures that the filter cartridge always maintains a good permeability state, so that the fluid flow between the heat exchange sleeve and the inner liner tube is smooth, and the heat exchange efficiency is always stable at the design level. In addition, it also greatly improves the purity of the fluid medium in the tube side. With the continuous use of the circulation, the mineral impurities that can be precipitated in the fluid are continuously reduced, and the amount of scale generated is gradually reduced, so that the time interval of cleaning operation is significantly extended, effectively reducing the interference of the cleaning process on the normal flow of the fluid medium and reducing the impact of equipment shutdown maintenance on production continuity.

[0021] (3) The present invention achieves centralized collection of the cleaned impurities by setting up a collection box, a drain pipe, a first cylinder, a trigger hole, a drain hole, a second cylinder, a discharge hole, a shaft seal, a plug and a second reset spring, so as to avoid the impurities remaining or flowing back in the pipe. When the impurity cleaning mechanism moves to the end of the first inner liner tube, it will trigger the drain hole to open, and use water pressure to quickly flush the impurity particles into the collection box, ensuring that the impurities can leave the heat exchange process in time. It can also collect the impurities of multiple heat exchange tubes at the same time, meet the large-scale processing of impurity collection, improve the overall efficiency of impurity removal, further ensure the purity of the fluid in each heat exchange tube, and maintain the stability of the heat exchange effect.

[0022] Furthermore, this design significantly improves the ease of system maintenance and reduces overall operating costs. After unified collection of scale and impurities, they can be discharged centrally, eliminating the need to clean each heat exchanger tube individually. This reduces the complexity of maintenance operations. Moreover, the entire collection process is automatically completed based on the movement trigger of the impurity cleaning mechanism and combined with water pressure, without the need for frequent shutdowns and manual intervention. This ensures the continuous and stable operation of the heat exchange system, making it particularly suitable for large heat exchange equipment with multiple heat exchanger tubes working in tandem. While improving equipment operating efficiency, it significantly reduces the workload of maintenance personnel.

[0023] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is an exploded view of the overall structure of the present invention;

[0026] Figure 3 This is a schematic diagram showing the connection between the composite heat exchange tube and the trigger-type collection mechanism of the present invention;

[0027] Figure 4 This is a schematic diagram showing the connection between the heat exchange sleeve and the inner liner tube of the present invention;

[0028] Figure 5 This is an exploded view of the composite heat exchanger tube of the present invention;

[0029] Figure 6 This is a schematic diagram of the connecting disk structure of the present invention;

[0030] Figure 7 This is an exploded view of the impurity cleaning mechanism of the present invention;

[0031] Figure 8 This is a schematic cross-sectional view of the internal structure of the movable block of the present invention;

[0032] Figure 9 This is an exploded view of the trigger-type collection mechanism of the present invention;

[0033] Figure 10 This is a schematic diagram of the internal structure of the two cylindrical bodies of the present invention;

[0034] Figure 11 This is a schematic diagram of the first and second cylindrical bodies of the present invention.

[0035] In the diagram: 1. Shell; 11. First inlet; 12. First outlet;

[0036] 2. First pipe box; 21. Second inlet; 22. Second outlet;

[0037] 3. Second pipe box;

[0038] 4. Tube sheet;

[0039] 5. Baffles;

[0040] 6. Composite heat exchange tube; 61. Heat exchange sleeve; 62. First inner liner tube; 621. Through hole; 63. Second inner liner tube; 64. Connecting plate; 641. Water inlet; 65. Filter cylinder; 66. First return spring; 67. Spiral plate; 68. Sealing cover; 69. Cylinder;

[0041] 7. Trigger-activated collection mechanism; 71. Collection box; 711. Mounting port; 712. Sewage pipe; 72. First cylinder; 721. Trigger hole; 722. Sewage discharge hole; 73. Second cylinder; 731. Discharge hole; 74. Shaft seal; 75. Plug; 76. Second return spring;

[0042] 8. Impurity cleaning mechanism; 81. Moving block; 811. Filter hole; 82. Rotating ring; 83. Cleaning component; 831. Rotating frame; 832. Brush; 84. Sliding bearing; 85. Connecting block; 851. Top rod; 86. Spiral blade; 87. Ball bearing module. Detailed Implementation

[0043] 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.

[0044] 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.

[0045] 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.

[0046] Example 1, please refer to the appendix for details. Figure 1-11As shown, a high-efficiency heat exchanger tube includes a shell 1, a first tube box 2, and a second tube box 3. The shell 1 and the tube boxes are detachably connected. Multiple composite heat exchange tubes 6 and baffles 5 are arranged in the cavity formed by the shell 1 and the tube boxes. The baffles 5 are staggered along the length of the composite heat exchange tubes 6. Two parallel tube sheets 4 are arranged at one end of each composite heat exchange tube 6. Each composite heat exchange tube 6 includes a heat exchange sleeve 61, a first inner liner tube 62, and a second inner liner tube 63. The heat exchange sleeve 61 and the first inner liner tube 62 are connected at one end by bolts. A space for fluid medium to flow is formed between the heat exchange sleeve 61 and the two inner liner tubes. A filter cylinder 65 with open ends is arranged in the first inner liner tube 62. A linearly movable impurity cleaning mechanism 8 is arranged in the filter cylinder 65. A trigger-type collection mechanism 7 is arranged at the end of the first inner liner tube 62 away from the second inner liner tube 63. The impurity cleaning mechanism 8 can promptly send impurity particles precipitated in the fluid into the trigger-type collection mechanism 7.

[0047] The above structure effectively removes precipitated scale particles from the heat exchange tubes during fluid heat exchange, preventing them from flowing back into the tubes and forming a scale layer on the inner wall of the tubes. This ensures efficient heat transfer and significantly improves the purity of the fluid medium within the tubes. In subsequent cycles, less scale will precipitate, and the intervals between cleanings will become longer, reducing interference with the fluid medium. Furthermore, the composite structure of the heat exchange tubes increases the flow path of the fluid within the tubes, thereby extending the heat exchange time and further improving heat exchange efficiency. At the same time, it shortens the overall length of the equipment, reducing space occupation.

[0048] The specific operation is as follows: First, the liquid in the shell side is connected. The liquid enters the shell 1 from the first inlet 11, that is, between the collection box 71 and the tube sheet 4 located in the shell 1. Then, it flows out from the first outlet 12 after passing through the baffle plate 5. Then, the liquid in the tube side is connected. The liquid flows into the space formed by the second tube box 3 and the tube sheet 4 located in the second tube box 3 from the second inlet 21. Then, the liquid enters between the second inner liner tube 63 and the sealing cover 68. Then, it enters the first inner liner tube 62 from the inlet hole 641. Then, it passes through the filter hole 811 and the filter cylinder 65, and flows into the heat exchange sleeve 61 from the through hole 621. Then, it flows spirally along the direction of the spiral plate 67. Then, it flows out from the opening at one end of the heat exchange sleeve 61, that is, between the two tube sheets 4. Then, it flows out from the second outlet 22.

[0049] When scale and impurities appear in the first inner liner tube 62, the cylinder 69 pushes the moving block 81 to move along the pipe direction. At the same time, under the action of water pressure, the spiral blade 86 rotates, which in turn drives the cleaning component 83 to rotate. The brush 832 cleans out the impurity particles embedded in the filter cartridge 65. Due to the concave design of the moving block 81, it is easy to "catch" the cleaned impurities. As the moving block 81 moves towards the end of the first inner liner tube 62, when it passes through the through hole 621, because the length of the moving block 81 is greater than the through hole 621, the liquid flow will be temporarily cut off. Because the liquid flowing between the heat exchange sleeve 61 and the inner liner tube will exert an axial force on the spiral plate 67, causing the spiral plate 67 to move closer to the tube sheet 4. At this time, the first return spring 66 is stretched and in dynamic equilibrium. During the process, without water pressure, the first reset spring 66 pulls the spiral plate 67 to reset, allowing the spiral plate 67 to float axially briefly during each cleaning operation, preventing scale buildup in dead corners. When the push rod 851 on the moving block 81 is inserted into the trigger hole 721, it pushes the plug 75, and at the same time, the second reset spring 76 is compressed, causing the plug 75 to pass over the drain hole 722, opening the drain hole 722. Due to water pressure, some fluid will carry the previously "caught" impurities into the collection box 71 through the drain hole 722, and then be discharged through the discharge hole 731 and the drain pipe 712. If scale particles precipitate in the heat exchange sleeve 61, they will flow back to the first inner liner tube 62 after passing through the outer circulation of the tube side and be intercepted by the filter cartridge 65 for subsequent cleaning.

[0050] Example 2, please refer to the appendix for details. Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, a connecting plate 64 is provided between the first inner liner tube 62 and the second inner liner tube 63. A cylinder 69 is provided on the connecting plate 64, and the output end of the cylinder 69 is connected to the impurity cleaning mechanism 8. A sealing cover 68 is provided outside the cylinder 69, and the sealing cover 68 and the connecting plate 64 are connected by threads. The cylinder 69 provides driving force for the linear back-and-forth movement of the impurity cleaning mechanism 8. A plurality of through holes 621 are equally spaced around the first inner liner tube 62. A first return spring 66 and a spiral plate 67 are sleeved on the outer wall of the first inner liner tube 62. One end of the first return spring 66 is connected to the spiral plate 67. Then, the other end of the first return spring 66 is connected to the folded edge of the outer wall of the first inner liner tube 62. The inner and outer edges of the spiral plate 67 are respectively attached to the outer wall of the inner liner tube and the inner wall of the heat exchange sleeve 61. Through the cooperation between the first return spring 66 and the spiral plate 67, the spiral plate 67 can float slightly along the axial direction of the inner liner tube under the premise of water pressure. Multiple water inlet holes 641 are equally spaced around the connecting plate 64. The water inlet holes 641 are located in the gap between the sealing cover 68 and the second inner liner tube 63. Through the water inlet holes 641, liquid can be poured into the first inner liner tube 62.

[0051] Example 3, please refer to the appendix for details. Figure 5 , 7 As shown in Figure 8, the impurity cleaning mechanism 8 includes a movable block 81 with a concave shape on one side, which is a frustum structure. The concave design facilitates the accumulation of impurities. A rotating ring 82 is located at the central axis of the movable block 81. Spiral blades 86 and cleaning components 83 are respectively arranged on both sides of the rotating ring 82. The cleaning component 83 includes a rotating frame 831 and multiple spaced brushes 832. The brushes 832 contact the inner wall of the filter cylinder 65. The spiral blades 86 can rotate using the force of water flow, thereby driving the cleaning component 83 to rotate and clean. A sliding bearing 84 is provided on the inner wall of the rotating ring 82. A connecting block 85 is provided on the inner wall of the sliding bearing 84. The interface on one side of the 5 is connected to the output end of the cylinder 69. The other side of the connecting block 85 is provided with a push rod 851. Through the impurity cleaning mechanism 8, the impurities on the filter cylinder 65 are cleaned out and gradually collected at the end of the first inner liner tube 62. The inner recess of the moving block 81 is provided with multiple filter holes 811 at equal intervals. Each groove on the outer wall of the moving block 81 is provided with a ball bearing module 87. Rolling friction is used instead of sliding friction to reduce frictional resistance. The length of the moving block 81 is greater than the length of the through hole 621, so that the moving block 81 can completely cover the through hole 621 during the movement process to achieve the purpose of cutting off the water flow.

[0052] Example 4, please refer to the appendix for details. Figure 2 , Figure 9 , Figure 10 and Figure 11 As shown, the trigger-type collection mechanism 7 includes a collection box 71 with a cross-sectional radius equal to that of the tube sheet 4. The collection box 71 has multiple mounting ports 711, each containing a trigger assembly. Each trigger assembly includes a first cylinder 72 and a second cylinder 73, which are detachably connected. The first cylinder 72 has a trigger hole 721 and multiple drain holes 722, which communicate with the trigger hole 721. A plug 75 is movably connected within the trigger hole 721, and a second return spring 76 is mounted on the plug 75. The second return spring 76 is located within a groove in the second cylinder 73. Through the trigger-type collection mechanism 7, impurities in multiple heat exchange tubes can be collected simultaneously, improving collection efficiency. The second cylinder 73 and the mounting ports 721... A shaft seal 74 is provided between the two cylinders 11. The second cylinder 73 is provided with multiple discharge holes 731. The discharge holes 731 connect the cavity formed by the two cylinders to the collection box 71. The collection box 71 is provided with a sewage pipe 712, which passes through the second tube box 3. Through the cooperation between the collection box 71 and the sewage pipe 712, the impurities are stored for a short period of time so that they can be discharged in a concentrated manner later. The upper and lower sides of the shell 1 are respectively provided with a first water inlet 11 and a first water outlet 12. The first water inlet 11 and the first water outlet 12 are used to introduce and export shell side liquid. The second tube box 3 is provided with a second water inlet 21 and a second water outlet 22. The second water outlet 22 is located between the two tube sheets 4. The second water inlet 21 and the second water outlet 22 are used to export tube side liquid.

[0053] The present invention has been described by way of example in conjunction with the accompanying drawings. 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-efficiency heat exchanger tube heat exchanger, comprising a shell (1), a first tube box (2), and a second tube box (3), wherein the shell (1) and the tube box are detachably connected, and a plurality of composite heat exchange tubes (6) and baffles (5) are arranged in the cavity formed by the shell (1) and the tube box, and the baffles (5) are staggered along the length direction of the composite heat exchange tubes (6), and two parallel tube sheets (4) are arranged at one end of the composite heat exchange tubes (6), characterized in that... Each of the composite heat exchange tubes (6) includes a heat exchange sleeve (61), a first inner liner tube (62), and a second inner liner tube (63). The heat exchange sleeve (61) and the first inner liner tube (62) are connected at one end by bolts. A space for fluid medium to flow is formed between the heat exchange sleeve (61) and the two inner liner tubes. A filter tube (65) with open ends is provided inside the first inner liner tube (62). A linearly movable impurity cleaning mechanism (8) is provided inside the filter tube (65). A trigger-type collection mechanism (7) is provided at the end of the first inner liner tube (62) away from the second inner liner tube (63). The impurity cleaning mechanism (8) can send the impurity particles precipitated in the fluid into the trigger-type collection mechanism (7) in a timely manner. The first inner liner tube (62) is provided with a plurality of through holes (621) at equal intervals. The outer wall of the first inner liner tube (62) is fitted with a first return spring (66) and a spiral plate (67). One end of the first return spring (66) is connected to the spiral plate (67), and the other end of the first return spring (66) is connected to the folded edge of the outer wall of the first inner liner tube (62). The inner edge and outer edge of the spiral plate (67) are respectively attached to the outer wall of the inner liner tube and the inner wall of the heat exchange sleeve (61). The impurity cleaning mechanism (8) includes a movable block (81) with a concave shape on one side forming a frustum structure. A rotating ring (82) is provided at the central axis of the movable block (81). Spiral blades (86) and cleaning components (83) are respectively provided on both sides of the rotating ring (82). The cleaning component (83) includes a rotating frame (831) and multiple spaced brushes (832). The brushes (832) are in contact with the inner wall of the filter cylinder (65). A sliding bearing (84) is provided on the inner wall of the rotating ring (82). A connecting block (85) is provided on the inner wall of the sliding bearing (84). The interface on one side of the connecting block (85) is connected to the output end of the cylinder (69). A push rod (851) is provided on the other side of the connecting block (85). The trigger-type collection mechanism (7) includes a collection box (71), the cross-sectional radius of the collection box (71) is equal to the radius of the tube sheet (4), the collection box (71) is provided with a plurality of installation ports (711), each installation port (711) is provided with a trigger component, the trigger component includes a first cylinder (72) and a second cylinder (73), and the two cylinders are detachably connected, the first cylinder (72) is provided with a trigger hole (721) and a plurality of drain holes (722), the drain holes (722) and the trigger hole (721) are connected, a plug (75) is movably connected in the trigger hole (721), the plug (75) is provided with a second return spring (76), the second return spring (76) is located in the groove of the second cylinder (73); A shaft seal (74) is provided between the second cylinder (73) and the mounting port (711). The second cylinder (73) is provided with multiple discharge holes (731). The discharge holes (731) connect the cavity formed by the two cylinders to the collection box (71). The collection box (71) is provided with a sewage pipe (712). The sewage pipe (712) passes through the second pipe box (3).

2. The high-efficiency heat exchanger tube according to claim 1, characterized in that, A connecting plate (64) is provided between the first inner liner tube (62) and the second inner liner tube (63). A cylinder (69) is provided on the connecting plate (64). The output end of the cylinder (69) is connected to the impurity cleaning mechanism (8). A sealing cover (68) is provided outside the cylinder (69). The sealing cover (68) and the connecting plate (64) are connected by threads.

3. The high-efficiency heat exchanger tube according to claim 2, characterized in that, The connecting plate (64) is provided with multiple water inlet holes (641) at equal intervals around it. The water inlet holes (641) are located in the gap between the sealing cover (68) and the second inner liner tube (63).

4. The high-efficiency heat exchanger tube according to claim 1, characterized in that, The inner recess of the movable block (81) is provided with a plurality of filter holes (811) at equal intervals. Each groove on the outer wall of the movable block (81) is provided with a ball bearing module (87), and the length of the movable block (81) is greater than the length of the through hole (621).

5. A high-efficiency heat exchanger tube according to claim 1, characterized in that, The upper and lower sides of the shell (1) are respectively provided with a first water inlet (11) and a first water outlet (12).

6. The high-efficiency heat exchanger tube according to claim 1, characterized in that, The second pipe box (3) is provided with a second inlet (21) and a second outlet (22), and the second outlet (22) is located between the two pipe sheets (4).

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