Plate heat exchanger and method for dismounting the same

Abstract

This invention discloses a plate heat exchanger and its assembly / disassembly method. The plate heat exchanger includes a fixed clamping plate, a movable clamping plate, a plate bundle composed of padded plates, an upper guide rod, a lower guide rod, and detachable upper and lower process guide rods. The upper process guide rod is connected to the wall via a triangular bracket and a bracket base plate. The lower process guide rod is connected to the channel via a second support frame and a support base plate. A first support frame is provided below the lower guide rod and connected to the equipment foundation platform. The assembly / disassembly method includes a plate bundle loosening and disassembly process and a plate bundle reassembly process. Extended assembly / disassembly space is created through steps such as splicing process guide rods, removing columns, and replacing process tie rods. This invention solves the problem of difficult assembly / disassembly of padded plates due to insufficient space between the plate bundle and columns in situations with limited factory space and equipment foundation platform dimensions, enabling plate assembly / disassembly or upgrades without expanding the factory.

Description

Technical Field

[0001] This invention relates to the field of heat exchange equipment technology, specifically a plate heat exchanger and its assembly / disassembly method. Background Technology

[0002] Detachable plate heat exchangers are widely used in industries such as military, nuclear power, and petrochemicals due to their high heat exchange efficiency and ease of maintenance. Conventional detachable plate heat exchangers typically have a long, unused space between the clamped plate bundles and the rear column to ensure sufficient space for the installation and removal of the internal heat exchange plates (plate bundles). This space is only used when the plate bundles are loosened for installation and removal; it remains idle during normal operation. This structural design necessitates a long installation length during the plant and foundation design phase, which is detrimental to the efficient use of plant space and may reduce the width of the maintenance access behind the column.

[0003] Furthermore, with increasing demands for heat exchanger processing capacity and particle throughput in the industrial sector, large-format plate heat exchangers with more plates or deeper corrugations are becoming increasingly widely used. When upgrading existing equipment, new plates often require more space for clamping and disassembly. However, how to replace and install new, large-format plates while maintaining the existing plant space and foundation platform dimensions has become a pressing technical challenge.

[0004] Therefore, there is a need for a plate heat exchanger and its disassembly and assembly method that can create sufficient space for the disassembly and assembly of equipment plate bundles in the case of limited factory space, by utilizing the factory walls, passages and other building structures, and without the need for columns, so as to ensure the smooth disassembly, assembly or replacement of the padded plates. Summary of the Invention

[0005] The purpose of this invention is to provide a plate heat exchanger that can utilize factory buildings to splice guide rods and its disassembly and assembly method, in order to solve the technical problem in the prior art that the limited space for disassembling and assembling plate bundles of plate heat exchangers is due to the limited space of factory buildings and the size of equipment foundation platforms.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A plate heat exchanger includes a fixed clamping plate, a movable clamping plate, a plate bundle clamped between the fixed and movable clamping plates, and a support structure for supporting the plate bundle. The plate bundle is composed of multiple padded plates stacked sequentially. The support structure includes an upper guide rod and a lower guide rod. The upper guide rod extends along the assembly / disassembly direction of the plate bundle. The movable clamping plate is provided with a rolling device that rolls with the upper guide rod. The lower guide rod extends along the assembly / disassembly direction of the plate bundle and is parallel to the upper guide rod, serving to support the plate bundle.

[0007] The upper guide rod of the equipment is detachably connected to a process upper guide rod at the end opposite to the fixed clamping plate. The end of the process upper guide rod away from the upper guide rod is connected to a bracket base plate for fixing to the wall via a triangular bracket. The lower guide rod of the equipment is detachably connected to a process lower guide rod at the end opposite to the fixed clamping plate. A second support frame is provided below the process lower guide rod to support it. The bottom of the second support frame is connected to a support base plate for fixing to the channel. A first support frame is provided below the lower guide rod near the end of the process lower guide rod. The bottom of the first support frame is used to fix to the equipment foundation platform.

[0008] Preferably, the end of the process guide rod connected to the guide rod on the equipment is provided with a first tenon and a second tenon and a second tenon and a second tenon and a third tenon to limit the straightness of the splicing between the process guide rod and the guide rod on the equipment. A reinforcing rib is also provided on the outer side of the splicing area between the process guide rod and the guide rod on the equipment to ensure the strength of the splicing end and allow the movable pressing plate rolling device to pass smoothly through the splicing point.

[0009] Preferably, the connection between the guide rod and the triangular bracket, and the connection between the triangular bracket and the bracket base plate, are both provided with a first and a second alignment riveting hole in the form of an elongated oval hole, to adjust the installation position of the guide rod. By adjusting the position of the connecting fasteners in each alignment riveting hole, it can be ensured that the installation dimensions and dimensional deviations of the spliced ​​guide rod meet the requirements.

[0010] Preferably, the first support frame includes a first support column and a first leveling screw. The lower end of the first support column is used to connect to the column base plate on the equipment foundation platform, and the first leveling screw is connected between the top end of the first support column and the bottom surface of the lower guide rod of the equipment to adjust the height of the lower guide rod. The leveling and alignment of the lower guide rod of the equipment can be achieved by adjusting the fasteners on the first leveling screw.

[0011] Preferably, the end of the process guide rod connected to the equipment guide rod is provided with a third tenon and mortise limiting structure to limit the straightness of the splicing between the process guide rod and the equipment guide rod.

[0012] Preferably, the lower guide rod has a riveting sliding hole at its end near the second support frame for connection with the second support frame via fasteners, and the riveting sliding hole extends along the assembly / disassembly direction of the plate bundle. By adjusting the position of the fasteners in the riveting sliding hole, installation errors in the length direction of the spliced ​​lower guide rod can be compensated.

[0013] Preferably, the second support frame includes a second support column and a second leveling screw. The lower end of the second support column is used to connect to the support base plate, and the second leveling screw is connected between the top end of the second support column and the bottom surface of the lower process guide rod to adjust the height of the lower process guide rod. The leveling and alignment of the lower process guide rod can be achieved by adjusting the fasteners on the second leveling screw.

[0014] The present invention also provides a method for disassembling and assembling the above-mentioned plate heat exchanger, which includes a plate bundle loosening and disassembly process and a plate bundle reassembly process.

[0015] The process of loosening and disassembling the plate bundle includes the following steps: Step 1, Upper Guide Rod Assembly: Fix the bracket base plate to the wall, and connect the triangular bracket to the bracket base plate; assemble the first end of the process upper guide rod to the end of the guide rod on the equipment that is away from the fixed clamping plate, and connect the second end of the process upper guide rod to the triangular bracket; Step 2, Lower Guide Rod Support: Install the first support frame below the end of the lower guide rod of the equipment near the column, fix the bottom of the first support frame to the column base plate on the equipment foundation platform, and support the lower guide rod of the equipment through the first support frame; Step 3: Column Removal: Remove the column connecting the guide rod on the equipment and the tail end of the lower guide rod. Step 4, Replacement of Tie Rod: Replace the equipment tie rod connecting the fixed pressure plate and the movable pressure plate with the first process tie rod and the second process tie rod. The lengths of the first process tie rod and the second process tie rod are greater than the length of the equipment tie rod. Step 5, Lower Guide Rod Assembly: Fix the support base plate to the channel, connect the lower end of the second support frame to the support base plate; assemble the first end of the process lower guide rod to the end of the equipment lower guide rod away from the fixed clamping plate, and connect the second end of the process lower guide rod to the upper end of the second support frame; Step 6, loosen the plate bundle: Move the movable clamping plate away from the fixed clamping plate along the guide rod on the equipment and the process guide rod to loosen the plate bundle clamped between the fixed clamping plate and the movable clamping plate.

[0016] The plate bundle reassembly process includes the following steps: Step 1, Clamping the plate bundle: In the loosened state formed during the disassembly and loosening process of the plate bundle, hang the pad plate and move the movable clamping plate towards the fixed clamping plate to clamp the plate bundle. Step 3, Reset the tie rod: Replace the first process tie rod and the second process tie rod with the equipment tie rod; Step 4: Disassembly of the lower guide rod: Remove the lower guide rod, the second support frame, and the support base plate. Step 5: Reinstall the column: Reinstall the column to the end of the guide rod on the equipment and the lower guide rod on the equipment; Step Six: Support Removal: Remove the first support frame; Step 7: Remove the upper guide rod: Remove the upper guide rod, triangular bracket and bracket base plate.

[0017] Preferably, there are multiple equipment tie rods, with the first process tie rod and the second process tie rod replacing two of the equipment tie rods respectively, and the replacement positions are symmetrical about the axis of the plate bundle to ensure uniform force during the clamping and loosening of the plate bundle.

[0018] Compared with the prior art, the present invention has the following advantages: (1) This invention detachably splices the upper and lower process guide rods at the ends of the guide rods on the equipment and the lower guide rod away from the fixed clamping plate, respectively. The upper process guide rod is connected to the wall through a triangular bracket and a bracket base plate, and the lower process guide rod is connected to the passage through a second support frame and a support base plate. At the same time, the lower guide rod is temporarily supported by the first support frame. After the columns are removed, an extended guide rod support system extending along the disassembly and assembly direction of the plate bundle is constructed. This structure makes full use of the existing walls and passages of the factory building without the need to add fixed columns, providing sufficient space for the loosening and movement of the movable clamping plate and plate bundle. This allows for the smooth completion of the disassembly and assembly of the pad plate even under limited factory space conditions, significantly improving space utilization and equipment maintenance adaptability.

[0019] (2) When upgrading existing plate heat exchangers, such as adding more plates or replacing them with deep corrugated plates, this invention only requires installing detachable splicing guide rods and support components on the existing equipment foundation platform. It achieves a greater plate bundle assembly / disassembly length without requiring expansion or large-scale modification of the plant building and equipment foundation. This method avoids the high costs of replacing the entire unit or undertaking extensive civil engineering work due to insufficient space for modification, exhibiting outstanding economic efficiency and ease of implementation. It is particularly suitable for situations such as nuclear power plants where changes to the foundation structure are strictly limited.

[0020] (3) During normal operation of the equipment, the process guide rods and related supporting components are removed, and the equipment is restored to a compact state supported only by the upper guide rod, the lower guide rod, and the column. The guide rods are relatively short, which helps to reduce the deflection deformation of the guide rods under their own weight and plate bundle load, and improves the structural stability and reliability of the whole machine during operation. The splicing guide rods and the equipment guide rods adopt a tenon and mortise limiting structure and reinforcing ribs. The lower process guide rod is equipped with riveting sliding holes, and each support frame is equipped with leveling screws to ensure the straightness and installation accuracy after splicing. At the same time, all splicing components are fastener connections or riveting structures, making disassembly and assembly simple and efficient, and facilitating maintenance personnel to quickly switch the equipment status. Attached Figure Description

[0021] Figure 1 This is an assembly diagram of the plate heat exchanger of the present invention in a spliced ​​state. Figure 1 ; Figure 2 This is an assembly diagram of the plate heat exchanger in the splicing state in this invention. Figure 2 ; Figure 3 This is a schematic diagram of the plate heat exchanger in operation according to the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the plate heat exchanger in operation according to the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the assembly and disassembly of the plate bundle in the plate heat exchanger of the present invention. Figure 1 ; Figure 6 This is a schematic diagram of the assembly and disassembly of the plate bundle in the plate heat exchanger of the present invention. Figure 2 ; Figure 7 This is a schematic diagram illustrating the connection between the guide rod, the triangular bracket, and the wall in this invention. Figure 1 ; Figure 8 This is a schematic diagram illustrating the connection between the guide rod, the triangular bracket, and the wall in this invention. Figure 2 ; Figure 9 This is a schematic diagram illustrating the connection between the lower guide rod and the support frame, foundation platform, and channel in this invention. Figure 1 ; Figure 10 This is a schematic diagram illustrating the connection between the lower guide rod and the support frame, foundation platform, and channel in this invention. Figure 2 ; Figure 11 This is a schematic diagram illustrating the connection between the lower guide rod and the support frame, foundation platform, and channel in this invention. Figure 3 ; In the diagram: 1. Plate with pad; 2. Movable clamping plate; 3. Equipment tie rod; 4. Wall; 5. Passageway; 6. Equipment foundation platform; 7. Equipment guide rod; 8. Upper process guide rod; 9. Bracket base plate; 10. Triangular bracket; 11. Lower process guide rod; 12. Support base plate; 13. Second support frame; 14. Lower equipment guide rod; 15. Column base plate; 16. First support frame; 17. Column; 18. First process tie rod; 19. Second process tie rod; 20. Movable clamping plate rolling device; 21. First tenon and mortise limiting structure; 22. Second tenon and mortise limiting structure; 23. Reinforcing rib plate; 24. First alignment riveting hole; 25. Second alignment riveting hole; 26. First leveling screw; 27. First support column; 28. Third tenon and mortise limiting structure; 29. ​​Riveting sliding hole; 30. Second support column; 31. Second leveling screw. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to specific embodiments.

[0023] like Figure 1-11 As shown, a plate heat exchanger has a detachable structure. Its main heat exchange, pressure bearing, and sealing elements are gasketed plates 1. The gasketed plates 1 are clamped by a fixed clamping plate and a movable clamping plate 2 via a pull rod 3. The upper guide rod 7, the lower guide rod 14, and the column 17 are the main supporting components for the operation of the equipment. The column 17 is connected to the ends of the upper guide rod 7 and the lower guide rod 14 by fasteners. The equipment is arranged on a foundation platform 6, and a wall 4 and a passageway 5 are provided behind the column 17 in the plant.

[0024] like Figure 3 As shown, under normal operating conditions, the plate bundle is clamped between the fixed clamping plate and the movable clamping plate 2. At this time, the tails of the upper guide rod 7 and the lower guide rod 14 are supported by the column 17. In this state, the space between the clamped plate bundle and the column 17 is insufficient to complete the loosening and disassembly operations of the plate bundle. Therefore, an extended disassembly space needs to be constructed in the following way.

[0025] To enable the assembly and disassembly of the plate bundle, the following modifications to the equipment are required: First, assemble the guide rod section. Pre-rive the bracket base plate 9 to the factory wall 4 using expansion bolts and other fasteners. Then, rivet the triangular bracket 10 to the bracket base plate 9 using fasteners. Finally, assemble the end of the guide rod 7 on the equipment to the end of the guide rod 8 in the process using fasteners. For example... Figure 4 As shown, the splice uses a first tenon-and-mortise limiting structure 21 and a second tenon-and-mortise limiting structure 22 to ensure the straightness of the two guide rods after splicing. Simultaneously, a reinforcing rib 23 is provided on the outer side of the splice area to enhance the strength of the connecting end and ensure that the movable pressing plate rolling device 20 on the movable pressing plate 2 can smoothly pass through the splice seam. Finally, the tail of the process guide rod 8 is connected to the triangular bracket 10 with fasteners. By adjusting the triangular bracket 10, the bracket base plate 9, and the first and second alignment riveting holes 24 and 25 in the form of elongated holes at the tail of the process guide rod 8, the installation dimensions and dimensional deviations of the entire spliced ​​guide rod can be precisely adjusted.

[0026] Next, install the auxiliary support for the lower guide rod 14 and remove the column 17. The lower guide rod 14 has rivet holes near the column 17 for mounting with the first support frame 16, and corresponding threaded holes on the column base plate 15 below it for matching the first support frame 16. The first support frame 16 includes a first support column 27 and a first leveling screw 26. First, rivet the first support column 27 to the threaded holes on the column base plate 15 using fasteners, and then connect it to the lower guide rod 14 using the fasteners on the first leveling screw 26. By tightening the fasteners on the first leveling screw 26, the height of the lower guide rod 14 can be adjusted to achieve leveling and alignment. After the first support frame 16 is installed and provides effective support for the lower guide rod 14, the connecting fasteners between the column 17 and the column base plate 15, and the upper guide rod 7, can be removed, thus removing the column 17. At this point, the weight of the equipment is supported by the splicing upper guide rod, the lower guide rod 14 of the equipment, and the first support frame 16, which are connected to the wall 4 and the equipment foundation platform 6, thus realizing a column-free structure.

[0027] Next, the lower guide rod is assembled. The support base plate 12 is riveted to the channel 5 using expansion bolts. Then, the second support column 30 of the second support frame 13 is connected and fixed to the threaded hole on the support base plate 12 using fasteners. The end of the equipment lower guide rod 14 is assembled with the end of the process lower guide rod 11. A third tenon-and-mortise limiting structure 28 is provided at the assembly point to ensure the straightness of the lower guide rod during assembly. The tail of the process lower guide rod 11 is provided with a riveting sliding hole 29 extending along the disassembly and assembly direction of the plate bundle. The riveting sliding hole 29 is connected to the second leveling screw 31 of the second support frame 13 using fasteners. By adjusting the fasteners on the second leveling screw 31, the process lower guide rod 11 can be leveled and aligned. By adjusting the position of the fasteners in the riveting sliding hole 29, the length direction of the assembled lower guide rod can be ensured to meet the installation requirements.

[0028] At this point, the extended guide rod support system, which extends along the disassembly and assembly direction of the plate bundle, is assembled, providing space for the long-distance movement of the movable clamping plate 2.

[0029] A method for disassembling and assembling the above-mentioned plate heat exchanger includes a plate bundle loosening and disassembly process and a plate bundle reassembly process.

[0030] The process of loosening and disassembling the plate bundle includes the following steps: Step 1: Assembling the upper guide rod The bracket base plate 9 is riveted and fixed to the wall 4 using expansion bolts. Then, the triangular bracket 10 is riveted to the bracket base plate 9 using fasteners. The ends of the guide rod 7 on the equipment and the guide rod 8 on the process are riveted together using fasteners. The connection ends of the process guide rod 8 and the guide rod 7 on the equipment use a first tenon and mortise limiting structure 21 and a second tenon and mortise limiting structure 22 to ensure the straightness of the splice. At the same time, a reinforcing rib plate 23 is provided to ensure the strength of the splice end. The splice structure connection can ensure that the movable pressure plate rolling device 20 can pass smoothly on the upper guide rod. Then, the tail of the process guide rod 8 is riveted to the triangular bracket 10 using fasteners. The positions of each connecting fastener are adjusted through the first alignment riveting hole 24 and the second alignment riveting hole 25 in the form of elongated holes in the tail of the process guide rod 8, the triangular bracket 10, and the bracket base plate 9 to ensure that the installation dimensions and dimensional deviations of the spliced ​​upper guide rod meet the requirements.

[0031] Step 2: Lower guide rod support A first support frame 16 is installed below the end of the lower guide rod 14 near the column 17. The first support column 27 of the first support frame 16 is riveted to the threaded hole of the column base plate 15 with fasteners, and then connected to the lower guide rod 14 of the equipment with the fasteners on the first leveling screw 26. The leveling and alignment of the lower guide rod 14 of the equipment is achieved by adjusting the fasteners on the first leveling screw 26.

[0032] Step 3: Removal of the pillars After the first support frame 16, which is matched with the upper guide rod and the lower guide rod 14, is installed, the fasteners connecting the column 17 to the column base plate 15 and the upper guide rod 7 are removed, thereby removing the column 17. At this time, the weight of the equipment is supported by the first support frame 16, which is matched with the upper guide rod and the lower guide rod 14, through its connection with the wall 4 and the equipment foundation platform 6, thus realizing a column-free structure.

[0033] Step 4: Replace the pull rod Replace the original equipment tie rod 3 with a first process tie rod 18 and a second process tie rod 19. The lengths of the first process tie rod 18 and the second process tie rod 19 are greater than the length of the equipment tie rod 3 to ensure that the tie rod length meets the dimensional requirements for subsequent plate bundle relaxation. There are usually multiple equipment tie rods 3. The first process tie rod 18 and the second process tie rod 19 replace two of the equipment tie rods 3 respectively. The replacement positions are symmetrical about the axis of the plate bundle to ensure uniform force distribution.

[0034] Step 5: Lower guide rod splicing The support base plate 12 is riveted to the channel 5 using expansion bolts. Then, the second support column 30 of the second support frame 13 is connected and fixed to the threaded hole of the support base plate 12 using fasteners. The lower guide rod 14 of the equipment is spliced ​​with the lower guide rod 11 of the process. The splicing position is connected at the end using fasteners, and the connection end uses a third tenon-and-mortise limiting structure 28 to ensure the straightness of the splice. The riveting sliding hole 29 of the lower guide rod 11 is connected to the second leveling screw 31 of the second support frame 13 using fasteners. The lower guide rod 11 of the process is leveled and aligned by adjusting the fasteners of the second leveling screw 31. Simultaneously, the position of the connecting fasteners is adjusted using the riveting sliding hole 29 to ensure that the length direction of the spliced ​​lower guide rod meets the installation requirements.

[0035] Step Six: Loosen the plate bundle After the lower guide rod is installed, move the movable clamping plate 2 away from the fixed clamping plate along the guide rod 7 on the equipment and the process guide rod 8 to loosen the plate bundle clamped between the fixed clamping plate and the movable clamping plate 2. After the plate bundle is completely loosened, the disassembly of the pad plate 1 can be carried out smoothly.

[0036] The plate bundle reassembly process includes the following steps: Step 1: Clamping the plate bundle During the process of loosening and disassembling the plate bundle, the pad plate 1 is hung in the loosened state, and the movable clamping plate 2 is moved towards the fixed clamping plate to clamp the plate bundle.

[0037] Step 2: Reset the pull rod After the plate bundle is clamped, replace the first process tie rod 18 and the second process tie rod 19 with the original equipment tie rod 3 to ensure that the tie rod does not occupy the passage space when the equipment is running normally.

[0038] Step 3: Disassembly of the lower guide rod Remove the lower guide rod 11, the second support frame 13, and the support base plate 12.

[0039] Step 4: Reinstalling the columns Reinstall the column 17 onto the tail end of the guide rod 7 on the equipment and the lower guide rod 14 on the equipment, and fix it to the column base plate 15 and the guide rod 7 on the equipment with fasteners.

[0040] Step 5: Removal of supports Remove the first support frame.

[0041] Step 6: Remove the upper guide rod The process involves dismantling guide rod 8, triangular bracket 10, and bracket base plate 9, restoring the equipment to its original state. Figure 3 The normal operating status is shown.

[0042] By following the steps above, even with limited factory space, the disassembly and assembly of plate heat exchanger plates with pads, the addition of plates, and the replacement of deep corrugated plates can be successfully completed.

[0043] The above are merely preferred embodiments of the present invention. It should be noted that, for those skilled in the art, based on the technical teachings provided by the present invention and as common knowledge in the field, other equivalent modifications and improvements can be made, and these should also be considered within the scope of protection of the present invention.

Claims

1. A plate heat exchanger, comprising a fixed clamping plate, a movable clamping plate (2), a plate bundle clamped between the fixed clamping plate and the movable clamping plate (2), and a support structure for supporting the plate bundle, wherein the plate bundle is composed of a plurality of padded plates (1) stacked sequentially, characterized in that, The support structure includes an upper guide rod (7) and a lower guide rod (14). The upper guide rod (7) extends along the disassembly and assembly direction of the plate bundle. The movable clamping plate (2) is provided with a movable clamping plate rolling device (20) that rolls with the upper guide rod (7). The lower guide rod (14) of the equipment extends along the disassembly and assembly direction of the plate bundle and is set parallel to the upper guide rod (7) to support the plate bundle; The guide rod (7) on the equipment is detachably spliced ​​with a process guide rod (8) at one end away from the fixed clamping plate. The end of the process guide rod (8) away from the guide rod (7) on the equipment is connected to the bracket base plate (9) for fixing to the wall (4) through a triangular bracket (10). The lower guide rod (14) of the equipment is detachably spliced ​​with a process lower guide rod (11) at one end away from the fixed clamping plate. A second support frame (13) for supporting the process lower guide rod (11) is provided below the process lower guide rod (11). A support base plate (12) for fixing to the channel (5) is connected to the bottom of the second support frame (13). The lower guide rod (14) of the equipment is provided with a first support frame (16) at one end near the lower guide rod (11) of the process. The bottom of the first support frame (16) is used to fix it to the equipment base platform (6).

2. A plate heat exchanger according to claim 1, characterized in that: The process guide rod (8) is provided with a first tenon and mortise limiting structure (21) and a second tenon and mortise limiting structure (22) at the end where it connects to the guide rod (7) on the equipment, so as to limit the straightness of the splicing between the process guide rod (8) and the guide rod (7) on the equipment.

3. A plate heat exchanger according to claim 2, characterized in that: A reinforcing rib plate (23) is also provided on the outside of the splicing part between the guide rod (8) on the process and the guide rod (7) on the equipment.

4. A plate heat exchanger according to claim 3, characterized in that: The connection between the process guide rod (8) and the triangular bracket (10), and the connection between the triangular bracket (10) and the bracket base plate (9) are provided with a first alignment riveting hole (24) and a second alignment riveting hole (25) in the form of an elongated hole, so as to adjust the installation position of the process guide rod (8).

5. A plate heat exchanger according to claim 4, characterized in that: The first support frame (16) includes a first support column (27) and a first leveling screw (26); the lower end of the first support column (27) is used to connect with the column base plate (15) on the equipment foundation platform (6); the first leveling screw (26) is connected between the top of the first support column (27) and the bottom surface of the equipment lower guide rod (14) to adjust the height of the equipment lower guide rod (14).

6. A plate heat exchanger according to claim 5, characterized in that: The end of the process guide rod (11) connected to the equipment guide rod (14) is provided with a third tenon and mortise limiting structure (28) to limit the straightness of the splicing between the process guide rod (11) and the equipment guide rod (14).

7. A plate heat exchanger according to claim 6, characterized in that: The lower guide rod (11) of the process is provided with a riveting slide hole (29) at the end near the second support frame (13). The riveting slide hole (29) is used to connect with the second support frame (13) by fasteners, and the riveting slide hole (29) extends along the disassembly and assembly direction of the plate bundle.

8. A plate heat exchanger according to claim 7, characterized in that: The second support frame (13) includes a second support column (30) and a second leveling screw (31); the lower end of the second support column (30) is used to connect with the support base plate (12), and the second leveling screw (31) is connected between the top of the second support column (30) and the bottom surface of the process lower guide rod (11) to adjust the height of the process lower guide rod (11).

9. A method for disassembling and assembling a plate heat exchanger according to any one of claims 1 to 8, characterized in that, This includes the process of loosening and disassembling the plate bundle and the process of reassembling the plate bundle; The process of loosening and disassembling the plate bundle includes the following steps: Step 1, upper guide rod splicing: fix the bracket base plate (9) to the wall (4), connect the triangular bracket (10) to the bracket base plate (9); splice the first end of the process upper guide rod (8) to the end of the guide rod (7) on the equipment away from the fixed clamping plate, and connect the second end of the process upper guide rod (8) to the triangular bracket (10); Step 2, Lower guide rod support: Install a first support frame (16) below the end of the lower guide rod (14) of the equipment near the column (17), fix the bottom of the first support frame (16) to the column base plate (15) on the equipment foundation platform (6), and support the lower guide rod (14) of the equipment through the first support frame (16). Step 3: Column removal: Remove the column (17) that connects the guide rod (7) on the equipment and the tail end of the lower guide rod (14) on the equipment. Step 4, Replacement of tie rod: Replace the equipment tie rod (3) that connects the fixed clamping plate and the movable clamping plate (2) with the first process tie rod (18) and the second process tie rod (19). The lengths of the first process tie rod (18) and the second process tie rod (19) are greater than the length of the equipment tie rod (3). Step 5, lower guide rod splicing: Fix the support base plate (12) to the channel (5), connect the lower end of the second support frame (13) to the support base plate (12); splice the first end of the process lower guide rod (11) to the end of the equipment lower guide rod (14) away from the fixed clamping plate, and connect the second end of the process lower guide rod (11) to the upper end of the second support frame (13); Step 6, loosen the plate bundle: move the movable clamping plate (2) away from the fixed clamping plate along the guide rod (7) on the equipment and the process guide rod (8) to loosen the plate bundle clamped between the fixed clamping plate and the movable clamping plate (2); The plate bundle reassembly process includes the following steps: Step 1, Clamping the plate bundle: Hang the padded plate (1) in the loosened state formed during the loosening and disassembly process of the plate bundle, and move the movable clamping plate (2) towards the fixed clamping plate to clamp the plate bundle; Step 2, Reset the pull rod: Replace the first process pull rod (18) and the second process pull rod (19) with the equipment pull rod (3); Step 3: Disassembly of the lower guide rod: Remove the lower process guide rod (11), the second support frame (13), and the support base plate (12). Step 4: Reinstall the column: Reinstall the column (17) back to the tail end of the guide rod (7) on the equipment and the lower guide rod (14) on the equipment; Step 5, Support Removal: Remove the first support frame (16); Step 6: Remove the upper guide rod: Remove the upper guide rod (8), triangular bracket (10) and bracket base plate (9) mentioned above.

10. The method for disassembling and assembling the plate heat exchanger according to claim 9, characterized in that: The number of the equipment tie rods (3) is multiple. The first process tie rod (18) and the second process tie rod (19) replace two of the equipment tie rods (3) respectively, and the replacement positions are symmetrical about the axis of the plate bundle.

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