A horizontal corrugated tube heat exchanger

Abstract

A horizontal corrugated tube heat exchanger relates to the technical field of corrugated tube heat exchangers and includes a shell. A front tube box and a rear tube box are respectively provided at both ends of the shell. The rear tube box is detachably connected to the shell. A tube sheet is provided between the front tube box and the shell, and the front tube box, the shell and the tube sheet are detachably connected. A tube pass partition is fixedly provided on the inner wall of the front tube box. A number of U-shaped heat exchange tubes are provided at the end of the tube sheet. Both pipe orifices of the U-shaped heat exchange tubes penetrate through the tube sheet and are detachably and sealingly connected to the tube sheet. The two pipe orifices of the U-shaped heat exchange tubes are respectively located on the upper and lower sides of the tube pass partition. A support assembly for supporting the U-shaped heat exchange tubes is fixedly provided at the end of the tube sheet. Liquid inlet pipes which are connected in a communicating manner are fixedly provided on the outer wall of the upper part of the front tube box and the outer wall of the lower part of the shell. Liquid discharge pipes which are connected in a communicating manner are fixedly provided on the outer wall of the lower part of the front tube box and the outer wall of the upper part of the shell. The present invention solves the problems of low maintenance convenience of the existing horizontal corrugated tube heat exchanger and easy fatigue fracture of the heat exchange tubes.

Description

Technical Field

[0001] The present invention relates to the technical field of corrugated tube heat exchangers, and specifically to a horizontal corrugated tube heat exchanger. Background Art

[0002] A horizontal corrugated tube heat exchanger is a common shell-and-tube heat exchange device, and its core structure consists of components such as a shell, U-shaped heat exchange tube bundles, tube sheets, baffles, and tube heads. The heat exchange tubes are bent into a U shape and fixed at both ends on the same tube sheet to form a tube pass; the shell and the tube sheet form a shell pass, and the cold and hot fluids exchange heat through the tube wall. When the two fluids conduct heat exchange, one fluid enters from the inlet of the tube head into the U-shaped tube bundles, completes a U-shaped flow inside the tubes, and then flows out from the outlet on the same side; the other fluid enters from the inlet on the side of the shell, and under the guidance of the baffle, flushes the outer wall of the tube bundles horizontally or spirally, and finally discharges from the shell outlet. The two fluids achieve countercurrent or cross-flow heat exchange through the tube wall.

[0003] In the process of using the existing horizontal corrugated tube heat exchanger, deficiencies have gradually emerged, which are mainly manifested in the following aspects:

[0004] First, the maintainability is low. Specifically, in a horizontal corrugated tube heat exchanger, the U-shaped heat exchange tubes and the tube sheets are usually fixed by expansion joints or welding. When replacing the U-shaped heat exchange tubes, the original U-shaped heat exchange tubes need to be cut and removed. After replacing the new U-shaped heat exchange tubes, they need to be re-welded or expanded with the tube sheets. The replacement process is complex and will damage the tube sheets. When cleaning the scale on the inner wall of the U-shaped heat exchange tubes, due to the fixed connection between the U-shaped heat exchange tubes and the tube sheets, the cleaning of the scale on the inner wall of the internal U-shaped heat exchange tubes is limited during the cleaning process with high-pressure water jets, resulting in a long scale cleaning cycle and poor cleaning effect.

[0005] Second, the heat exchange tubes are prone to fatigue fracture, affecting the safe operation and service life of the heat exchanger. Specifically, in the design of the heat exchanger, one end of the U-shaped heat exchange tube is fixed to the tube sheet. To prevent interference between the shell-side baffle and the shell during the assembly of the heat exchanger, the shell-side baffle is smaller than the shell diameter. Similarly, to prevent interference between the U-shaped heat exchange tubes and the baffles during the assembly process, a gap is left between the U-shaped heat exchange tubes and the baffles. Therefore, the other end of the U-shaped heat exchange tube is in a free suspended state. This cantilever structure causes the free end of the U-shaped heat exchange tube to lack effective support. Under the continuous impact of the shell-side fluid, it is extremely easy to induce fluid-induced vibration phenomena, causing the free end to swing reciprocally, and ultimately the U-shaped heat exchange tube undergoes fatigue fracture, affecting the safe operation and service life of the heat exchanger.

[0006] In summary, it is obvious that the existing technology has inconveniences and defects in actual use, so it is necessary to make improvements. Summary of the Invention

[0007] Aiming at the defects in the prior art, the technical problem to be solved by the present invention is to provide a horizontal corrugated tube heat exchanger, in which the U-shaped heat exchange tubes and the tube sheet are detachably connected, so that the U-shaped heat exchange tubes can be replaced quickly and the scale can be cleaned thoroughly, greatly improving the convenience of equipment maintenance and the service life of the equipment.

[0008] The heat exchanger is provided with a U-shaped heat exchange tube support structure, which can effectively suppress the vibration caused by fluid impact, prevent fatigue fracture, and at the same time does not affect the overall assembly of the heat exchanger, taking into account both stability and maintenance convenience, and improving the service life of the equipment.

[0009] To solve the above problems, the present invention provides the following technical solutions:

[0010] A horizontal corrugated tube heat exchanger includes a shell, with a front tube box and a rear tube box respectively provided at both ends of the shell. The rear tube box is detachably connected to the shell. There is a tube sheet between the front tube box and the shell, and the front tube box, the shell and the tube sheet are detachably connected. A tube-side partition is fixedly provided on the inner wall of the front tube box. A number of U-shaped heat exchange tubes are provided at the end of the tube sheet. Both pipe orifices of the U-shaped heat exchange tubes penetrate through the tube sheet and are detachably and hermetically connected to the tube sheet. The two pipe orifices of the U-shaped heat exchange tubes are respectively located on the upper and lower sides of the tube-side partition. A support assembly for supporting the U-shaped heat exchange tubes is fixedly provided at the end of the tube sheet. Liquid inlet pipes that are connected in communication are fixedly provided on the outer wall of the upper part of the front tube box and the outer wall of the lower part of the shell. Liquid discharge pipes that are connected in communication are fixedly provided on the outer wall of the lower part of the front tube box and the outer wall of the upper part of the shell.

[0011] As an optimized scheme, a number of first positioning grooves and second positioning grooves are respectively provided at the opposite end portions of the tube sheet. There is an insertion hole between the first positioning groove and the second positioning groove, and both ends of the insertion hole extend into the first positioning groove and the second positioning groove respectively. Two fixing circular plates are fixedly connected to the outer wall of the U-shaped heat exchange tube. Threaded sections are provided at the pipe orifices of the U-shaped heat exchange tubes. Positioning columns are provided at the pipe orifices of the U-shaped heat exchange tubes. One end of each positioning column is a hexagonal prism structure, and a threaded hole that matches the threaded section of the U-shaped heat exchange tube is provided through the end of the positioning column.

[0012] As an optimized scheme, annular grooves are provided at the ends of the positioning columns and the fixing circular plates, and sealing gaskets are laid in the annular grooves.

[0013] As an optimized solution, the support assembly includes a shell-side partition plate fixedly connected to the end of the tube sheet. Rectangular grooves are provided at opposite ends of the shell-side partition plate. A sliding plate is horizontally slidably arranged in the rectangular groove. One end of the sliding plate is of a trapezoidal structure. Two support grooves are provided on the inner wall of the shell, and the support grooves are shaped to fit the trapezoidal ends of the sliding plates. A plurality of staggered baffle plates are fixedly connected to the top and bottom of the shell-side partition plate. A plurality of avoidance holes are provided through the ends of the baffle plates, and the U-shaped heat exchange tubes are located in the avoidance holes. Two detachably arranged arc-shaped positioning plates are evenly distributed along the circumferences of the avoidance holes at the ends of the baffle plates. The two arc-shaped positioning plates are pieced together to form a complete circular structure and are fitted with the U-shaped heat exchange tubes.

[0014] As an optimized solution, a moving plate is horizontally slidably arranged on the inner wall of the rectangular groove. An avoidance groove is provided at the end of the sliding plate, and one end of the moving plate extends into the avoidance groove. A plurality of arc-shaped guiding grooves are provided through the top of the moving plate, and fixing rods are arranged in the arc-shaped guiding grooves. Both ends of the fixing rods are fixedly connected to the sliding plate.

[0015] As an optimized solution, an adjusting plate is detachably arranged on the side wall of the shell-side partition plate. One end of the moving plate passes through the shell-side partition plate and extends to the outside and is fixedly connected to the adjusting plate. Two pull rings are fixedly arranged at the end of the adjusting plate, and the adjusting plate is detachably connected to the shell-side partition plate through a stop bolt.

[0016] As an optimized solution, the arc-shaped positioning plate is detachably connected to the baffle plate through a limit screw.

[0017] As an optimized solution, one end of the tube-side partition plate is of a trapezoidal structure. A slot is provided at the end of the tube sheet, and the slot is shaped to fit the trapezoidal end of the tube-side partition plate.

[0018] As an optimized solution, the front tube sheet, the shell and the tube sheet are detachably connected by bolts and nuts, and the rear tube sheet and the shell are detachably connected by bolts and nuts.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. When the equipment is running, one of the fluids enters through the liquid inlet pipe on the shell. Under the cooperation of the shell-side baffle and the baffle plate, this fluid moves horizontally and reciprocally in the shell and finally is discharged through the liquid discharge pipe on the shell. At the same time, the other fluid enters the front tube sheet through the liquid inlet pipe on the front tube sheet, passes through the U-shaped heat exchange tubes and is discharged through the liquid discharge pipe on the front tube sheet. The two fluids achieve heat exchange through the heat conduction of the U-shaped heat exchange tubes. When disassembling the U-shaped heat exchange tubes, first disassemble the arc-shaped positioning plate to release the restriction of the arc-shaped positioning plate on the U-shaped heat exchange tubes. Then use tools such as a wrench to turn the positioning column until the positioning column is completely separated from the U-shaped heat exchange tubes. Drag the U-shaped heat exchange tubes to separate them from the tube sheet and then extract them through the avoidance hole. Thus, the disassembly of the U-shaped heat exchange tubes is completed. Similarly, when installing the U-shaped heat exchange tubes, repeat the above operations in reverse order. The U-shaped heat exchange tubes of this heat exchanger are detachably connected to the tube sheet, making the replacement of the U-shaped heat exchange tubes fast and the scale cleaning thorough, greatly improving the equipment maintenance convenience and the service life of the equipment;

[0021] 2. When assembling the heat exchanger, first assemble the U-shaped heat exchange tubes and the tube sheet and the U-shaped heat exchange tubes and the baffle plate. Then insert the U-shaped heat exchange tubes and the shell-side baffle into the shell. Then fix the tube sheet, the front tube sheet and the shell with bolts and nuts. During this process, the sliding plate does not extend out, so the shell-side baffle and the shell do not interfere with each other. Turn the stop bolt to make the adjusting plate move towards the shell-side baffle, thereby driving the moving plate to slide horizontally. Under the cooperation of the arc-shaped guiding groove and the fixed rod, the sliding plate slides outwards until the trapezoidal end of the sliding plate enters the support groove and abuts against the shell, thereby supporting the shell-side baffle. Similarly, the arc-shaped positioning plate can support the U-shaped heat exchange tubes. Finally, fix the rear tube sheet and the shell with bolts and nuts. Thus, the assembly of the heat exchanger is completed. This heat exchanger is provided with a U-shaped heat exchange tube support structure, which can effectively suppress the vibration caused by fluid impact, prevent fatigue fracture, and at the same time does not affect the overall assembly of the heat exchanger, taking into account both stability and maintenance convenience and improving the service life of the equipment;

[0022] 3. Turning the positioning column can adjust the fitting degree between the positioning column and the tube sheet and between the fixed circular plate and the tube sheet, thereby ensuring the sealing performance at both ends of the tube sheet. Brief Description of the Drawings

[0023] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally marked with similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2Schematic diagram of the internal structure of the housing of the present invention;

[0026] Figure 3 Side sectional view of the tube sheet of the present invention;

[0027] Figure 4 Schematic diagram of the structure of the U-shaped heat exchange tube of the present invention;

[0028] Figure 5 Schematic diagram of the structure of the positioning column and the fixing circular plate of the present invention;

[0029] Figure 6 Schematic diagram of the structure of the end of the positioning column of the present invention;

[0030] Figure 7 Schematic diagram of the structures at both ends of the tube sheet of the present invention;

[0031] Figure 8 Schematic diagram of the structure of the second positioning groove and the insertion hole of the present invention;

[0032] Figure 9 Schematic diagram of the structure of the shell-side baffle of the present invention;

[0033] Figure 10 Schematic diagram of the structure of the support groove of the present invention;

[0034] Figure 11 Schematic diagram of the structure of the baffle of the present invention;

[0035] Figure 12 Schematic diagram of the internal structure of the shell-side baffle of the present invention;

[0036] Figure 13 Schematic diagram of the structure of the avoidance groove of the present invention;

[0037] Figure 14 Schematic diagram of the structure of the moving plate and the sliding plate of the present invention;

[0038] Figure 15 Schematic diagram of the structure when the sliding plate is inserted into the support groove of the present invention.

[0039] In the figure: 1 - drain pipe; 2 - front tube sheet; 3 - tube plate; 4 - liquid inlet pipe; 5 - shell; 6 - rear tube sheet; 7 - tube pass partition; 8 - U-shaped heat exchange tube; 9 - baffle plate; 10 - shell pass partition; 11 - support assembly; 12 - slot; 13 - threaded section; 14 - jack; 15 - first positioning groove; 16 - second positioning groove; 17 - threaded hole; 18 - positioning post; 19 - fixed circular plate; 20 - annular groove; 21 - gasket; 22 - limit screw; 23 - arc-shaped positioning plate; 24 - avoidance hole; 25 - sliding plate; 26 - rectangular groove; 27 - adjusting plate; 28 - pull ring; 29 - stop bolt; 30 - arc-shaped guiding groove; 31 - moving plate; 32 - fixed rod; 33 - avoidance groove; 34 - support groove. Detailed implementation manner

[0040] The embodiments of the technical solution of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0041] As Figures 1 to 15 shown, a horizontal corrugated tube heat exchanger includes a shell 5. A front tube sheet 2 and a rear tube sheet 6 are respectively provided at both ends of the shell 5. The rear tube sheet 6 is detachably connected to the shell 5. A tube plate 3 is provided between the front tube sheet 2 and the shell 5. The front tube sheet 2, the shell 5 and the tube plate 3 are detachably connected. A tube pass partition 7 is fixedly provided on the inner wall of the front tube sheet 2. A number of U-shaped heat exchange tubes 8 are provided at the end of the tube plate 3. Both pipe orifices of the U-shaped heat exchange tube 8 penetrate through the tube plate 3 and are detachably and hermetically connected to the tube plate 3. The two pipe orifices of the U-shaped heat exchange tube 8 are respectively located on the upper and lower sides of the tube pass partition 7. A support assembly 11 for supporting the U-shaped heat exchange tube 8 is fixedly provided at the end of the tube plate 3. A liquid inlet pipe 4 which is communicated is fixedly provided on the outer wall of the upper part of the front tube sheet 2 and the outer wall of the lower part of the shell 5. A drain pipe 1 which is communicated is fixedly provided on the outer wall of the lower part of the front tube sheet 2 and the outer wall of the upper part of the shell 5.

[0042] A number of first positioning grooves 15 and second positioning grooves 16 are respectively provided at the opposite end parts of the tube plate 3. A jack 14 is provided between the first positioning groove 15 and the second positioning groove 16. Both ends of the jack 14 extend into the first positioning groove 15 and the second positioning groove 16 respectively. Two fixed circular plates 19 are fixedly connected to the outer wall of the U-shaped heat exchange tube 8. Threaded sections 13 are provided at both pipe orifices of the U-shaped heat exchange tube 8. Positioning posts 18 are provided at both pipe orifices of the U-shaped heat exchange tube 8. One end of the positioning post 18 is a hexagonal prism structure. A threaded hole 17 which is matched with the threaded section 13 of the U-shaped heat exchange tube 8 is provided through the end of the positioning post 18.

[0043] Annular grooves 20 are provided at the ends of both the positioning post 18 and the fixed circular plate 19. Gaskets 21 are laid in the annular grooves 20.

[0044] The support component 11 includes a shell-side partition plate 10 fixedly connected to the end of the tube sheet 3. Rectangular grooves 26 are provided at opposite ends of the shell-side partition plate 10. A sliding plate 25 is horizontally slidably arranged in the rectangular groove 26. One end of the sliding plate 25 is of a trapezoidal structure. Two support grooves 34 are provided on the inner wall of the shell 5. The support grooves 34 are shaped to conform to the trapezoidal ends of the sliding plates 25. A plurality of staggered baffle plates 9 are fixedly connected to the top and bottom of the shell-side partition plate 10. A plurality of avoidance holes 24 are provided through the ends of the baffle plates 9. The U-shaped heat exchange tubes 8 are located in the avoidance holes 24. Two detachably arranged arc-shaped positioning plates 23 are evenly distributed along the circumferences of the avoidance holes 24 at the ends of the baffle plates 9. The two arc-shaped positioning plates 23 are pieced together to form a complete circular structure and fit with the U-shaped heat exchange tubes 8.

[0045] A moving plate 31 is horizontally slidably arranged on the inner wall of the rectangular groove 26. An avoidance groove 33 is provided at the end of the sliding plate 25. One end of the moving plate 31 extends into the avoidance groove 33. A plurality of arc-shaped guiding grooves 30 are provided through the top of the moving plate 31. A fixing rod 32 is arranged in the arc-shaped guiding grooves 30. Both ends of the fixing rod 32 are fixedly connected to the sliding plate 25.

[0046] An adjusting plate 27 is detachably arranged on the side wall of the shell-side partition plate 10. One end of the moving plate 31 passes through the shell-side partition plate 10 and extends to the outside and is fixedly connected to the adjusting plate 27. Two pull rings 28 are fixedly arranged at the end of the adjusting plate 27. The adjusting plate 27 is detachably connected to the shell-side partition plate 10 through a stop bolt 29.

[0047] The arc-shaped positioning plate 23 is detachably connected to the baffle plate 9 through a limit screw 22.

[0048] One end of the tube-side partition plate 7 is of a trapezoidal structure. A slot 12 is provided at the end of the tube sheet 3. The slot 12 is shaped to conform to the trapezoidal end of the tube-side partition plate 7.

[0049] The front tube sheet 2, the shell 5 and the tube sheet 3 are detachably connected by bolts and nuts. The rear tube sheet 6 and the shell 5 are detachably connected by bolts and nuts.

[0050] The working principle of this device is as follows:

[0051] When the device is running, one of the fluids enters through the liquid inlet pipe 4 on the housing 5. Under the cooperation of the shell-side partition plate 10 and the baffle plate 9, the fluid moves horizontally and reciprocally within the housing 5 and finally is discharged from the liquid discharge pipe 1 on the housing 5. At the same time, the other fluid enters the front tube sheet 2 through the liquid inlet pipe 4 on the front tube sheet 2, passes through the U-shaped heat exchange tube 8 and is then discharged from the liquid discharge pipe 1 on the front tube sheet 2. The two fluids achieve heat exchange through the heat conduction of the U-shaped heat exchange tube 8. When disassembling the U-shaped heat exchange tube 8, first disassemble the arc-shaped positioning plate 23 to release the restriction of the arc-shaped positioning plate 23 on the U-shaped heat exchange tube 8. Then use tools such as a wrench to turn the positioning column 18 until the positioning column 18 is completely separated from the U-shaped heat exchange tube 8. Drag the U-shaped heat exchange tube 8 to separate it from the tube sheet 3 and then extract it through the avoidance hole 24. Thus, the disassembly of the U-shaped heat exchange tube 8 is completed. Similarly, when installing the U-shaped heat exchange tube 8, repeat the above operations in reverse order. The U-shaped heat exchange tube 8 and the tube sheet 3 of this heat exchanger adopt a detachable connection, making the replacement of the U-shaped heat exchange tube 8 fast and the scale cleaning thorough, greatly improving the equipment maintenance convenience and the service life of the equipment;

[0052] When assembling the heat exchanger, first assemble the U-shaped heat exchange tube 8 and the tube sheet 3 and the U-shaped heat exchange tube 8 and the baffle plate 9. Then insert the U-shaped heat exchange tube 8 and the shell-side partition plate 10 into the housing 5. Then fix the tube sheet 3, the front tube sheet 2 and the housing 5 with bolts and nuts. During this process, the sliding plate 25 does not extend out, so the shell-side partition plate 10 and the housing 5 do not interfere with each other. Turn the stop bolt 29 to make the adjusting plate 27 move towards the shell-side partition plate 10, thereby driving the moving plate 31 to slide horizontally. Under the cooperation of the arc-shaped guide groove 30 and the fixed rod 32, the sliding plate 25 slides outwards until the trapezoidal end of the sliding plate 25 enters the support groove 34 and abuts against the housing 5, thereby supporting the shell-side partition plate 10. Similarly, the arc-shaped positioning plate 23 can support the U-shaped heat exchange tube 8. Finally, fix the rear tube sheet 6 and the housing 5 with bolts and nuts. Thus, the assembly of the heat exchanger is completed. This heat exchanger is provided with a U-shaped heat exchange tube 8 support structure, which can effectively suppress the vibration caused by fluid impact, prevent fatigue fracture, and at the same time does not affect the overall assembly of the heat exchanger, taking into account both stability and maintenance convenience and improving the service life of the equipment.

[0053] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A horizontal corrugated tube heat exchanger, characterized in that: It includes a housing (5), with a front tube sheet (2) and a rear tube sheet (6) provided at both ends of the housing (5) respectively. The rear tube sheet (6) is detachably connected to the housing (5). A tube sheet (3) is provided between the front tube sheet (2) and the housing (5). The front tube sheet (2), the housing (5) and the tube sheet (3) are detachably connected. A tube pass partition plate (7) is fixedly provided on the inner wall of the front tube sheet (2). A number of U-shaped heat exchange tubes (8) are provided at the end of the tube sheet (3). Both pipe orifices of the U-shaped heat exchange tube (8) penetrate through the tube sheet (3) and are detachably and sealingly connected to the tube sheet (3). The two pipe orifices of the U-shaped heat exchange tube (8) are respectively located on the upper and lower sides of the tube pass partition plate (7). A support assembly (11) for supporting the U-shaped heat exchange tube (8) is fixedly provided at the end of the tube sheet (3). Liquid inlet pipes (4) which are connected in a communicating manner are fixedly provided on the outer wall of the upper part of the front tube sheet (2) and the outer wall of the lower part of the housing (5). Liquid discharge pipes (1) which are connected in a communicating manner are fixedly provided on the outer wall of the lower part of the front tube sheet (2) and the outer wall of the upper part of the housing (5). The support assembly (11) includes a shell pass partition plate (10) fixedly connected to the end of the tube sheet (3). Rectangular grooves (26) are provided at the opposite ends of the shell pass partition plate (10). A sliding plate (25) is horizontally slidably provided in the rectangular groove (26). One end of the sliding plate (25) is of a trapezoidal structure. Two support grooves (34) are provided on the inner wall of the housing (5). The support grooves (34) are shaped to match the trapezoidal end of the sliding plate (25). A number of staggered baffle plates (9) are fixedly connected to the top and bottom of the shell pass partition plate (10). A number of avoidance holes (24) are provided through the end of the baffle plate (9). The U-shaped heat exchange tube (8) is located in the avoidance holes (24). Two detachably provided arc-shaped positioning plates (23) are evenly distributed along the circumferential direction of the avoidance holes (24) at the end of the baffle plate (9). The two arc-shaped positioning plates (23) are pieced together to form a complete circular structure and are fitted to the U-shaped heat exchange tube (8). A moving plate (31) is horizontally slidably provided on the inner wall of the rectangular groove (26). An avoidance groove (33) is provided at the end of the sliding plate (25). One end of the moving plate (31) extends into the avoidance groove (33). A number of arc-shaped guiding grooves (30) are provided through the top of the moving plate (31). Fixing rods (32) are provided in the arc-shaped guiding grooves (30). Both ends of the fixing rod (32) are fixedly connected to the sliding plate (25).

2. The horizontal corrugated tube heat exchanger according to claim 1, characterized in that: The opposite end portions of the tube sheet (3) are respectively provided with a plurality of first positioning grooves (15) and second positioning grooves (16). An insertion hole (14) is provided between the first positioning groove (15) and the second positioning groove (16). Both ends of the insertion hole (14) extend into the first positioning groove (15) and the second positioning groove (16) respectively. Two fixing circular plates (19) are fixedly connected to the outer wall of the U-shaped heat exchange tube (8). Threaded sections (13) are provided at the pipe orifices of the U-shaped heat exchange tube (8). Positioning columns (18) are provided at the pipe orifices of the U-shaped heat exchange tube (8). One end of the positioning column (18) is of a hexagonal prism structure. A threaded hole (17) matching the threaded section (13) of the U-shaped heat exchange tube (8) is provided through the end of the positioning column (18).

3. The horizontal corrugated tube heat exchanger according to claim 2, characterized in that: Annular grooves (20) are provided at the ends of the positioning column (18) and the fixing circular plate (19). Sealing gaskets (21) are laid in the annular grooves (20).

4. A horizontal corrugated tube heat exchanger according to claim 1, characterized in that: An adjusting plate (27) is detachably provided on the side wall of the shell-side baffle (10). One end of the moving plate (31) passes through the shell-side baffle (10) and extends to the outside and is fixedly connected to the adjusting plate (27). Two pull rings (28) are fixedly provided at the end of the adjusting plate (27). The adjusting plate (27) is detachably connected to the shell-side baffle (10) through a stop bolt (29).

5. A horizontal corrugated tube heat exchanger according to claim 1, characterized in that: The arc-shaped positioning plate (23) is detachably connected to the baffle plate (9) through a limit screw (22).

6. The horizontal corrugated tube heat exchanger according to claim 1, wherein: One end of the tube-side baffle (7) is of a trapezoidal structure. A slot (12) is provided at the end of the tube sheet (3). The slot (12) is shaped to conform to the trapezoidal end of the tube-side baffle (7).

7. The horizontal corrugated tube heat exchanger according to claim 1, characterized in that: The front tube sheet (2), the shell (5) and the tube sheet (3) are detachably connected by bolts and nuts. The rear tube sheet (6) and the shell (5) are detachably connected by bolts and nuts.

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