Energy-saving titanium alloy heat exchanger and mounting method thereof

Abstract

The invention relates to the technical field of heat exchangers, and discloses an energy-saving titanium alloy heat exchanger and an installation method thereof.The titanium alloy heat exchanger comprises a tubular heat exchanger, the tubular heat exchanger comprises a heat exchanger shell, tube plates are installed on the two sides of the interior of the heat exchanger shell, and a plurality of heat exchange tubes are arranged between the tube plates; and the unblocking unit comprises multiple sets of unblocking cutters arranged in each set of heat exchange tubes, and the unblocking cutters are distributed in the radial direction with the axes of the heat exchange tubes as the center. According to the invention, by arranging the rotary unblocking cutter and the connecting shaft in each heat exchange tube, the inner walls of the heat exchange tubes are continuously scraped and cleaned in the operation process of the heat exchanger, the formation and accumulation of dirt are effectively prevented, the defects of traditional shutdown cleaning are avoided, the long-term heat exchange efficiency and the operation stability of the heat exchanger are remarkably improved, and the service life of the heat exchanger is prolonged. The energy consumption and the maintenance cost are reduced, and the purpose of saving energy is achieved.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, and more specifically, to an energy-saving titanium alloy heat exchanger and its installation method. Background Technology

[0002] Heat exchangers are key pieces of equipment widely used in industries such as chemical, petroleum, power, and metallurgy. They are used to transfer heat between fluids at different temperatures, achieving efficient energy utilization and conversion. Among them, tubular heat exchangers dominate due to their simple structure, reliable operation, and wide applicability. When handling highly corrosive media, titanium alloys with excellent corrosion resistance are often used as the main material for heat exchangers to ensure the service life and operational stability of the equipment.

[0003] However, in actual operation, existing titanium alloy tube heat exchangers are prone to fouling due to impurities and scaling substances in the fluid, or physical and chemical changes under high temperature and high pressure conditions. This scaling layer significantly reduces the heat transfer efficiency of the heat exchange tubes, increases fluid flow resistance, leads to higher energy consumption, and may even clog the tubes, affecting the normal operation of the heat exchanger. Traditional descaling methods often require shutdown and disassembly for manual or mechanical cleaning, which is time-consuming, labor-intensive, and carries the risk of secondary pollution. Additionally, some online cleaning methods, such as chemical cleaning, are environmentally unfriendly and may corrode the titanium alloy material.

[0004] Secondly, for the shell-side fluid, i.e., the fluid flowing outside the heat exchanger shell, traditional tubular heat exchangers typically use arc-shaped baffles to enhance the turbulence of the shell-side fluid and improve the heat transfer coefficient. However, these arc-shaped baffles can create stagnant or dead zones in certain areas of the shell-side fluid, leading to uneven fluid distribution and underutilization of some heat transfer surfaces. Within these dead zones, the fluid velocity is low, resulting in low heat transfer efficiency and making it prone to localized scaling or accelerated corrosion, further affecting the overall performance and service life of the heat exchanger. Summary of the Invention

[0005] This invention provides an energy-saving titanium alloy heat exchanger and its installation method, solving the technical problems of easy scaling inside the heat exchange tubes, inconvenient scaling removal, and dead zones in the shell-side fluid in existing energy-saving titanium alloy heat exchangers as pointed out in related technologies.

[0006] The first aspect of this invention provides an energy-saving titanium alloy heat exchanger, comprising a tubular heat exchanger, wherein the tubular heat exchanger includes a heat exchanger shell, a first tube box and a second tube box are respectively installed at both ends of the heat exchanger shell, a fluid B inlet pipe and a fluid B outlet pipe are installed on both sides of the first tube box, tube sheets are installed on both sides inside the heat exchanger shell, and a plurality of heat exchange tubes are arranged between the tube sheets; a cleaning unit, the cleaning unit including a plurality of cleaning cutters disposed inside each group of heat exchange tubes, the cleaning cutters being radially distributed with the axis of the heat exchange tube as the center, a connecting shaft being arranged inside the heat exchange tube along the axial direction, the connecting shaft being fixedly connected to the cleaning cutters; a fixing frame is disposed inside the second tube box, the fixing frame being fixedly connected to a corresponding group of tube sheets, and the connecting shaft being rotatably connected to the fixing frame through a bearing.

[0007] As a further optimization of the present invention, the unblocking cutters are distributed in a ring inside the heat exchange tube, and multiple sets of the unblocking cutters are arranged at equal intervals along the axial direction of the connecting shaft.

[0008] As a further optimization of the present invention, an axial distance is maintained between the two ends of the connecting shaft and the two end faces of the heat exchange tube to form a fluid inlet.

[0009] As a further optimization of the present invention, a gear is installed at one end of the connecting shaft that passes through the fixed frame. The fixed frame is provided with multiple sets of external gear rings, which mesh with the corresponding multiple sets of gears. The fixed frame is also provided with an internal gear ring, which meshes with a set of gears in the middle.

[0010] As a further optimization of the present invention, a connecting frame is installed on the internal gear ring and the external gear ring, and a transmission unit is provided on the connecting frame. The transmission unit is used to drive the connecting frame to rotate around its own axis.

[0011] As a further optimization of the present invention, the connecting frame is provided with multiple sets of turbulence-disrupting blades arranged in a ring. The turbulence-disrupting blades are located inside the second pipe box and are fixedly connected to the connecting frame.

[0012] As a further optimization of the present invention, the transmission unit includes a rotating shaft connected to the inside of the fluid inlet pipe B by a bearing, and multiple sets of transmission blades are distributed in a ring around the outside of the rotating shaft, and the transmission blades are fixedly connected to the rotating shaft.

[0013] As a further optimization of the present invention, a connecting seat is installed on the outside of the heat exchanger shell, and a first drive shaft is connected to the internal bearing of the connecting seat. The first drive shaft is fixedly connected to the rotating shaft. A second drive shaft is installed on the connecting frame. The second drive shaft passes through the second tube box and is connected to the first drive shaft through a belt pulley transmission mechanism.

[0014] As a further optimization of the present invention, a spiral baffle is also provided inside the heat exchanger shell. The spiral baffle has a spiral structure and has channels inside that are adapted to the heat exchange tube.

[0015] A second aspect of the present invention provides an installation method for an energy-saving titanium alloy heat exchanger as described above, comprising the following steps: S1: Install tube sheet and heat exchange tubes inside the heat exchanger shell, and fix both ends of the heat exchange tubes in the holes of the tube sheet; S2: Fix the unblocking tool radially onto the connecting shaft, and install the connecting shaft and the heat exchange tube coaxially, leaving an axial gap at both ends; S3: Fix the fixing bracket to the tube sheet inside the second tube box, and rotatably connect the connecting shaft to the fixing bracket through the bearing; S4: Install a gear at the end of the connecting shaft, and install an internal gear ring and an external gear ring on the fixed frame, which mesh with the corresponding gears respectively; S5: Install connecting brackets on the inner and outer toothed rings, and fix the turbulence blades on the connecting brackets; S6: Install spiral baffles inside the heat exchanger shell and allow the heat exchange tubes to pass through its channels; S7: Install the first tube box and the second tube box at both ends of the heat exchanger shell, and install the A fluid inlet pipe, A fluid outlet pipe, B fluid inlet pipe, and B fluid outlet pipe respectively; S8: Install a rotating shaft with drive blades inside the fluid inlet pipe of fluid B, and fix the first drive shaft to the rotating shaft through a connecting seat; S9: Install the second drive shaft on the connecting frame, so that it passes through the second tube box and is connected to the first drive shaft through the pulley drive mechanism.

[0016] The beneficial effects of this invention are as follows: 1. This invention, by setting a rotating cleaning tool and connecting shaft inside each heat exchange tube, achieves continuous scraping and cleaning of the inner wall of the heat exchange tube during the operation of the heat exchanger, effectively preventing the formation and accumulation of dirt, avoiding the drawbacks of traditional shutdown cleaning, significantly improving the long-term heat exchange efficiency and operational stability of the heat exchanger, reducing energy consumption and maintenance costs, and achieving the goal of energy saving.

[0017] 2. This invention replaces the traditional bow-shaped baffle with a spiral baffle, allowing the shell-side fluid to flow along a spiral path, effectively eliminating the stagnant and dead zones caused by traditional baffles. The spiral baffle enables the shell-side fluid to contact the heat exchange tubes more evenly, increasing the fluid velocity and enhancing turbulence, thereby significantly improving the shell-side heat transfer coefficient and further enhancing the overall heat transfer performance of the heat exchanger.

[0018] 3. This invention utilizes the fluid's own kinetic energy to drive the unblocking cutter's rotation via the unblocking unit, eliminating the need for additional external power. This results in a compact overall structure and high operational reliability. Furthermore, the titanium alloy material ensures the heat exchanger's long service life under highly corrosive media.

[0019] 4. This invention reduces the occurrence of clogging and scaling, lowers the frequency of maintenance and the need for chemical cleaning, not only extending the life of the equipment but also reducing the discharge of chemical waste liquid, resulting in significant economic and environmental benefits. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a partial cross-sectional three-dimensional structural diagram of the present invention. Figure 1 ; Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the present invention. Figure 2 ; Figure 4 This is a three-dimensional structural diagram of the tube sheet, heat exchange tube, and spiral baffle of the present invention. Figure 5 This is a three-dimensional structural diagram of the spiral spoiler of the present invention; Figure 6 This is a three-dimensional structural diagram of the unblocking tool of the present invention; Figure 7 This is a three-dimensional structural diagram of the partially exploded unblocking unit of the present invention; Figure 8 This is a schematic diagram of the planar cross-sectional structure of the present invention; Figure 9 This is the invention Figure 7 Enlarged view of the structure at point A in the middle.

[0021] In the diagram: 100, tubular heat exchanger; 110, heat exchanger shell; 120, fluid A inlet pipe; 130, fluid A outlet pipe; 140, first tube box; 150, fluid B inlet pipe; 160, fluid B outlet pipe; 170, second tube box; 180, tube sheet; 190, heat exchange tube; 200, unblocking unit; 210, unblocking tool; 220, connecting shaft; 230, reinforcing connecting ring; 240, fixing frame; 250, gear; 260, internal gear ring; 270, external gear ring; 280, connecting frame; 290, baffle blade; 300, transmission unit; 310, rotating shaft; 320, transmission blade; 330, connecting seat; 340, first transmission shaft; 350, second transmission shaft; 360, pulley transmission mechanism; 400, spiral baffle. Detailed Implementation

[0022] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0023] According to the appendix Figure 1 To be continued Figure 4 As shown, the present invention provides an energy-saving titanium alloy heat exchanger, including a tubular heat exchanger 100 and a blockage removal unit 200; the tubular heat exchanger 100 includes a heat exchanger shell 110, and A fluid inlet pipe 120 and A fluid outlet pipe 130 are installed opposite to each other on the outer sides of the heat exchanger shell 110 for connecting the inlet and outlet of fluid A, such as cold fluid or hot fluid; a first tube box 140 and a second tube box 170 are respectively installed at both ends of the heat exchanger shell 110, and B fluid inlet pipe 150 and B fluid outlet pipe 160 are installed opposite to each other on the two sides of the first tube box 140 for connecting the inlet and outlet of fluid B, such as hot fluid or cold fluid.

[0024] The first tube box 140 is equipped with a baffle to prevent the B fluid entering through the B fluid inlet pipe 150 from mixing with the B fluid discharged through the B fluid outlet pipe 160.

[0025] Tube sheets 180 are installed on both sides inside the heat exchanger shell 110. These tube sheets 180 separate the shell-side and tube-side fluids and fix the heat exchange tubes 190. A number of heat exchange tubes 190 are arranged between the two tube sheets 180. The heat exchange tubes 190 are the core components for heat exchange between fluid A and fluid B. The tube sheets 180 have holes corresponding to the number of heat exchange tubes 190. Both ends of the heat exchange tubes 190 are fixed within the holes of the tube sheets 180 to ensure a tight connection. To ensure the long service life and durability of the heat exchanger when handling highly corrosive media, the heat exchange tubes 190 are preferably made of titanium alloy.

[0026] According to the appendix Figure 6 To be continued Figure 8 As shown, the unclogging unit 200 is the key to the online self-cleaning of the heat exchange tube 190 in this invention. The unclogging unit 200 includes multiple sets of unclogging cutters 210 disposed inside each set of heat exchange tubes 190. The unclogging cutters 210 are radially distributed with the axis of the heat exchange tube 190 as the center, and their radial outer edges are clearance-fitted with the inner wall of the heat exchange tube 190. This ensures that the unclogging cutters 210 can scrape off the dirt on the inner wall when rotating, without causing wear to the heat exchange tube 190. Two sets of connecting shafts 220 are disposed inside the heat exchange tube 190 along the axial direction. The two sets of connecting shafts 220 are fixedly connected to the two ends of the unclogging cutters 210, and the connecting shafts 220 are coaxially disposed with the heat exchange tube 190. An axial distance is maintained between the two ends of the connecting shafts 220 and the two end faces of the heat exchange tube 190 to form a fluid inlet, ensuring that the fluid B can smoothly enter the interior of the heat exchange tube 190.

[0027] Specifically, the unblocking cutters 210 are arranged in a ring inside the heat exchange tube 190. Multiple sets of unblocking cutters 210 are arranged at equal intervals along the axial direction of the connecting shaft 220, so that the unblocking cutters 210 can fully cover the inner wall of the heat exchange tube 190 and achieve a uniform scraping and cleaning effect.

[0028] To enhance the overall structural strength and stability of the unblocking tool 210, multiple sets of reinforcing connecting rings 230 can be provided between the radially distributed sets of unblocking tools 210, and the reinforcing connecting rings 230 and the unblocking tools 210 are fixedly connected.

[0029] The second tube box 170 is equipped with a fixing frame 240, which is fixedly connected to a corresponding set of tube plates 180 to provide support for the transmission mechanism of the unblocking unit 200. The connecting shaft 220 is rotatably connected to the fixing frame 240 through a bearing to ensure that the connecting shaft 220 can rotate smoothly.

[0030] Among them, a set of connecting shafts 220 far from the fixed frame 240 are connected to a support bracket by a bearing, and the support bracket is fixedly connected to the partition, so that the two ends of the unblocking tool 210 can remain stable.

[0031] To enable the rotation of the unblocking tool 210, a gear 250 is mounted on one end of the connecting shaft 220 that passes through the fixed frame 240. The fixed frame 240 has multiple sets of external gear rings 270, which mesh with corresponding sets of gears 250. Simultaneously, the fixed frame 240 also has an internal gear ring 260, which meshes with a central set of gears 250. By transmitting external rotational power to the connecting shaft 220, the unblocking tool 210 is driven to rotate. Specifically, the interior of the internal gear ring 260 engages with the teeth of the central set of gears 250, thereby driving the gears 250 to rotate.

[0032] To drive the aforementioned gear 250, internal gear ring 260, and external gear ring 270 to rotate, a connecting frame 280 is installed on the internal gear ring 260 and external gear ring 270. A transmission unit 300 is provided on the connecting frame 280, which is used to drive the connecting frame 280 to rotate around its own axis. Through the rotation of the connecting frame 280, the internal gear ring 260 and external gear ring 270 are driven to rotate, which in turn drives the gear 250 and connecting shaft 220 to rotate, ultimately enabling the unblocking cutter 210 to achieve self-rotation cleaning inside the heat exchange tube 190.

[0033] As a further optimization, multiple sets of baffles 290 are arranged in a ring on the connecting frame 280. The baffles 290 are located inside the second pipe box 170 and are fixedly connected to the connecting frame 280. When fluid B flows through the second pipe box 170, the baffles 290 can utilize the kinetic energy of fluid B to generate rotational force through fluid impact, driving the connecting frame 280 to rotate, thereby driving the unblocking unit 200 to work. This achieves online unblocking without additional external power, further highlighting the energy-saving feature.

[0034] To drive the connecting bracket 280 to rotate more precisely, according to the attached... Figure 8 and attached Figure 9 As shown, the present invention also provides a specific transmission unit 300; the transmission unit 300 includes a rotating shaft 310 connected to the inside of the fluid B inlet pipe 150 by a bearing, and multiple sets of transmission blades 320 are distributed in a ring around the outside of the rotating shaft 310, and the transmission blades 320 are fixedly connected to the rotating shaft 310; when fluid B flows into the fluid B inlet pipe 150, it will impact the transmission blades 320 and drive the rotating shaft 310 to rotate.

[0035] A connecting seat 330 is installed on the outside of the heat exchanger shell 110. The first drive shaft 340 is connected to the bearing inside the connecting seat 330. The first drive shaft 340 is fixedly connected to the rotating shaft 310. A second drive shaft 350 is installed on the connecting frame 280. The second drive shaft 350 passes through the second tube box 170 and is connected to the first drive shaft 340 through a belt pulley transmission mechanism 360. The rotating shaft 310 is driven by the flow energy of fluid B, and then the connecting frame 280 and the unblocking unit 200 are rotated through the linkage mechanism, realizing the effective utilization of energy and the high efficiency of transmission.

[0036] To address the issue of dead zones in the shell-side fluid caused by traditional bow-shaped baffles, according to the attached... Figure 5 As shown, a spiral baffle 400 is also provided inside the heat exchanger shell 110.

[0037] The spiral baffle 400 has a spiral structure, and the interior of the spiral baffle 400 has channels adapted to the heat exchange tube 190. The heat exchange tube 190 passes through the channels of the spiral baffle 400. The spiral baffle 400 replaces the traditional bow-shaped or rectangular baffle, forcing fluid A to flow along a spiral path. The spiral flow can effectively avoid fluid stagnation and dead zones in the shell side, making fluid A more evenly distributed in the shell side and with a higher flow velocity. At the same time, it enhances the radial mixing and turbulence of the fluid, significantly improving the heat exchange efficiency of the shell side, thereby improving the energy-saving effect of the entire heat exchanger.

[0038] In summary, the energy-saving titanium alloy heat exchanger of this invention achieves online automatic cleaning of the inner wall of the heat exchange tube 190 by deploying a self-driven anti-clogging unit 200 inside the heat exchange tube 190, preventing scaling and maintaining high-efficiency heat transfer. Simultaneously, the use of a spiral baffle 400 optimizes the shell-side fluid flow, eliminating the heat transfer dead zone in traditional structures and further enhancing the heat transfer effect. Combined with the corrosion-resistant properties of titanium alloy, this invention offers significant advantages in heat exchange applications handling highly corrosive media, including energy saving, high efficiency, long service life, and low maintenance costs.

[0039] According to the appendix Figure 1 To be continued Figure 9 As shown, an installation method for an energy-saving titanium alloy heat exchanger includes the following steps: S1. Install tube sheets 180 on both sides inside the heat exchanger shell 110, and install several heat exchange tubes 190 between the two tube sheets 180, and fix the two ends of the heat exchange tubes 190 into the holes of the tube sheets 180 respectively. S2. Fix the unblocking tool 210 radially around the axis of the heat exchange tube 190 on the connecting shaft 220, so that the connecting shaft 220 and the heat exchange tube 190 are coaxially arranged, and leave an axial gap between the two ends of the connecting shaft 220 and the two end faces of the heat exchange tube 190. Then insert the connecting shaft 220 together with the unblocking tool 210 into the heat exchange tube 190. S3. Install the fixing bracket 240 inside the second tube box 170, and fix the fixing bracket 240 to the tube plate 180 on the corresponding side. Rotate the connecting shaft 220 to the fixing bracket 240 through the bearing. S4. Install a gear 250 at one end of the connecting shaft 220 that passes through the fixed frame 240, install an internal gear ring 260 and an external gear ring 270 on the fixed frame 240, and make the external gear ring 270 mesh with the corresponding multiple sets of gears 250, and the internal gear ring 260 mesh with the middle set of gears 250. S5. Install a connecting frame 280 on the inner toothed ring 260 and the outer toothed ring 270, and install a baffle blade 290 in a ring shape on the connecting frame 280. S6. Install a spiral baffle 400 inside the heat exchanger shell 110 so that the heat exchange tube 190 passes through the hole opened on the spiral baffle 400. S7. Install the first tube box 140 and the second tube box 170 at both ends of the heat exchanger shell 110 respectively, and install the B fluid inlet pipe 150 and the B fluid outlet pipe 160 on both sides of the first tube box 140, and install the A fluid inlet pipe 120 and the A fluid outlet pipe 130 on both sides of the outside of the heat exchanger shell 110. S8. A rotating shaft 310 is installed inside the fluid inlet pipe 150 of fluid B, and a transmission blade 320 is fixed in an annular shape outside the rotating shaft 310. S9. Install a connecting seat 330 on the outside of the heat exchanger shell 110, install a first drive shaft 340 inside the connecting seat 330 via a bearing, and fix the first drive shaft 340 to the rotating shaft 310. S10. Install the second drive shaft 350 on the connecting frame 280, pass the second drive shaft 350 through the second tube box 170 and connect it to the first drive shaft 340 through the pulley transmission mechanism 360.

[0040] The embodiments of this specific implementation have been described above. However, this embodiment is not limited to the specific implementation described above. The specific implementation described above is merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this embodiment, all of which are within the protection scope of this embodiment.

Claims

1. An energy-saving titanium alloy heat exchanger, characterized in that, include: A tubular heat exchanger includes a heat exchanger shell, with an A fluid inlet pipe and an A fluid outlet pipe installed on both sides of the outer side of the heat exchanger shell, a first tube box and a second tube box installed at both ends of the heat exchanger shell, a B fluid inlet pipe and a B fluid outlet pipe installed on both sides of the first tube box, and tube sheets installed on both sides of the inner side of the heat exchanger shell, with a plurality of heat exchange tubes arranged between the tube sheets; The unblocking unit includes multiple sets of unblocking cutters disposed inside each set of heat exchange tubes. The unblocking cutters are radially distributed with the axis of the heat exchange tube as the center. A connecting shaft is disposed inside the heat exchange tube along the axial direction, and the connecting shaft is fixedly connected to the unblocking cutters. The second tube box is equipped with a fixing frame inside, which is fixedly connected to a corresponding set of tube sheets. The connecting shaft is rotatably connected to the fixing frame through a bearing.

2. The energy-saving titanium alloy heat exchanger according to claim 1, characterized in that, The unblocking cutters are arranged in a ring inside the heat exchange tube, and multiple sets of the unblocking cutters are arranged at equal intervals along the axial direction of the connecting shaft.

3. The energy-saving titanium alloy heat exchanger according to claim 1, characterized in that, An axial gap is maintained between the two ends of the connecting shaft and the two end faces of the heat exchange tube to form a fluid inlet.

4. The energy-saving titanium alloy heat exchanger according to claim 1, characterized in that, A gear is installed at one end of the connecting shaft that passes through the fixed frame. The fixed frame is provided with multiple sets of external gear rings, which mesh with the corresponding sets of gears. The fixed frame is also provided with internal gear rings, which mesh with the middle set of gears.

5. An energy-saving titanium alloy heat exchanger according to claim 4, characterized in that, A connecting frame is mounted on the internal gear ring and the external gear ring. A transmission unit is provided on the connecting frame, and the transmission unit is used to drive the connecting frame to rotate around its own axis.

6. An energy-saving titanium alloy heat exchanger according to claim 5, characterized in that, The connecting frame is provided with multiple sets of baffles arranged in a ring. The baffles are located inside the second pipe box and are fixedly connected to the connecting frame.

7. An energy-saving titanium alloy heat exchanger according to claim 5, characterized in that, The transmission unit includes a rotating shaft with bearings connected inside the fluid inlet pipe B. Multiple sets of transmission blades are arranged in a ring around the outside of the rotating shaft, and the transmission blades are fixedly connected to the rotating shaft.

8. An energy-saving titanium alloy heat exchanger according to claim 7, characterized in that, A connecting seat is installed on the outside of the heat exchanger shell. A first drive shaft is connected to the internal bearing of the connecting seat. The first drive shaft is fixedly connected to the rotating shaft. A second drive shaft is installed on the connecting frame. The second drive shaft passes through the second tube box and is connected to the first drive shaft through a belt pulley transmission mechanism.

9. An energy-saving titanium alloy heat exchanger according to claim 1, characterized in that, The heat exchanger shell is also provided with a spiral baffle plate, which has a spiral structure and has channels inside that are adapted to the heat exchange tube.

10. An installation method for an energy-saving titanium alloy heat exchanger as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Install tube sheet and heat exchange tubes inside the heat exchanger shell, and fix both ends of the heat exchange tubes in the holes of the tube sheet; S2: Fix the unblocking tool radially onto the connecting shaft, and install the connecting shaft and the heat exchange tube coaxially, leaving an axial gap at both ends; S3: Fix the fixing bracket to the tube sheet inside the second tube box, and rotatably connect the connecting shaft to the fixing bracket through the bearing; S4: Install a gear at the end of the connecting shaft, and install an internal gear ring and an external gear ring on the fixed frame, which mesh with the corresponding gears respectively; S5: Install connecting brackets on the inner and outer toothed rings, and fix the turbulence blades on the connecting brackets; S6: Install spiral baffles inside the heat exchanger shell and allow the heat exchange tubes to pass through its channels; S7: Install the first tube box and the second tube box at both ends of the heat exchanger shell, and install the A fluid inlet pipe, A fluid outlet pipe, B fluid inlet pipe, and B fluid outlet pipe respectively; S8: Install a rotating shaft with drive blades inside the fluid inlet pipe of fluid B, and fix the first drive shaft to the rotating shaft through a connecting seat; S9: Install the second drive shaft on the connecting frame, so that it passes through the second tube box and is connected to the first drive shaft through the pulley drive mechanism.

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