Modular waste heat boiler

Abstract

The application relates to a modular waste heat boiler, which is located between a waste gas pipe and an air outlet pipe. The waste heat boiler comprises a superheater module, an evaporator module, an economizer module and a steam drum. The superheater module comprises a plurality of shields. The corresponding pipeline and header tank of the superheater are installed in the space surrounded by the plurality of shields. The shield structure of the evaporator module and the economizer module is the same as that of the superheater module. The space surrounded by the corresponding shield of the superheater module is communicated with the waste gas pipe. The space surrounded by the corresponding shield of the economizer module is communicated with the air outlet pipe. The space surrounded by the corresponding shield of the evaporator module is communicated with the space surrounded by the corresponding shield of the economizer module and the space surrounded by the corresponding shield of the superheater module. The working medium side pipelines of the superheater module, the evaporator module and the economizer module are communicated with the steam drum. The application has the effect of shortening the time required for installing the waste heat boiler.

Description

Technical Field

[0001] This application relates to the field of waste heat boilers, and more particularly to a modular waste heat boiler. Background Technology

[0002] A waste heat boiler is a boiler that uses the waste heat from waste gas or waste liquid in various industrial processes, as well as the heat generated from the combustion of combustible substances, to heat water to a certain temperature. A waste heat boiler mainly consists of components such as a superheater, evaporator, economizer, and steam drum. The superheater, evaporator, and economizer are all installed in a closed space enclosed by multiple protective plates. The steam drum is installed on the top protective plate. The protective plate near the superheater is connected to the waste gas pipe via a flange, and the sliding plate near the economizer is connected to the outlet pipe via a flange. The waste gas flows sequentially through the superheater, evaporator, and economizer within the space enclosed by the protective plates.

[0003] Common superheaters, evaporators, and economizers are all composed of several pipes and headers. The working fluid side pipes of the superheater, evaporator, and economizer are all connected to the steam drum. The working fluid side feedwater flows through the economizer, steam drum, evaporator, steam drum, and superheater in sequence. Finally, the working fluid side feedwater is heated into steam for industrial production.

[0004] The waste heat boiler consists of several pipes and headers that are shipped in bulk. After the pipes and headers arrive at the site, the operators need to locate, assemble and weld them on-site. The process of installing the waste heat boiler is time-consuming. Summary of the Invention

[0005] To shorten the time required to install a waste heat boiler, this application provides a modular waste heat boiler.

[0006] The modular waste heat boiler provided in this application adopts the following technical solution:

[0007] A modular waste heat boiler is located between an exhaust pipe and an outlet pipe. The waste heat boiler includes a superheater module, an evaporator module, an economizer module, and a steam drum. The superheater module includes multiple protective plates. The pipes and headers corresponding to the superheater are installed within the space enclosed by the multiple protective plates. The protective plates of the evaporator module and the economizer module have the same structure as those of the superheater module. The pipes and headers corresponding to the evaporator are installed within the space enclosed by the corresponding protective plates, and the pipes and headers corresponding to the economizer are also installed within the space enclosed by the corresponding protective plates. The space enclosed by the protective plates of the superheater module is connected to the exhaust pipe. The space enclosed by the protective plates of the economizer module is connected to the outlet pipe. The space enclosed by the protective plates of the evaporator module, the economizer module, and the superheater module are all connected. The working fluid side pipes of the superheater module, the evaporator module, and the economizer module are all connected to the steam drum.

[0008] By adopting the above technical solution, the superheater module, evaporator module, and economizer module are all manufactured in the factory. When the waste heat boiler is manufactured and delivered to its destination, the operator only needs to position the superheater module, evaporator module, and economizer module when installing the waste heat boiler. Then, connect the superheater module to the exhaust pipe and the economizer module to the outlet pipe. Then, connect the two connected modules. Finally, install the steam drum and connect the medium-side pipelines of the superheater module, evaporator module, and economizer module to the steam drum. This completes the installation of the waste heat boiler, reducing the need for operators to assemble and weld the superheater, evaporator, and economizer pipelines on-site during the installation of the waste heat boiler, and shortening the time required for installation.

[0009] Optionally, a docking flange is fixedly connected to each of the two protective plates of the superheater module. Holes penetrating the protective plates are opened at positions corresponding to the docking flanges. The protective plate structures of the evaporator module and the economizer module are consistent with the protective plate structure of the superheater module, and adjacent docking flanges are connected.

[0010] By adopting the above technical solution, when it is necessary to connect two adjacent modules, the two adjacent mating flanges can be fixed by bolts and nuts.

[0011] Optionally, an expansion joint is provided between two adjacent mating flanges. The expansion joint includes two flanges and a bellows disposed between the two flanges. The axial direction of the bellows is consistent with the axial direction of the two flanges. The ends of the bellows are fixedly connected to the corresponding flanges. Both flanges are fixedly connected to the corresponding mating flanges.

[0012] By adopting the above technical solution, after the superheater module, evaporator module and economizer module are positioned, expansion joints are used to connect two adjacent modules. When connecting two adjacent modules, the two flanges are first fixed to the corresponding mating flanges with bolts and nuts. When the protective plates of the two adjacent modules expand and contract with heat, the bellows also deforms, reducing the need to replace some modules of the waste heat boiler due to deformation of the protective plates.

[0013] Optionally, the bellows is provided with a fixing component to improve the connection effect of the expansion joint between the two modules. The fixing component includes multiple mounting rods, uprights, support rods, pressure plates, and drive plates.

[0014] By adopting the above technical solution, the fixing component improves the connection between two adjacent modules and reduces the impact of vibration generated during the flow of exhaust gas on the connection between the two adjacent modules.

[0015] Optionally, multiple mounting rods are fixedly connected to a flange near the exhaust pipe. The mounting rods are located on the side of the exhaust pipe near the bellows, and the multiple mounting rods are distributed circumferentially along the flange. Each end of the upright is fixedly connected to a connecting ring, and the two connecting rings are respectively sleeved on the two mounting rods. The length direction of the support rod is arranged radially along the flange. The support rod is located on the side of the upright near the exhaust pipe. A collar is fixedly connected to the end of the support rod away from the exhaust pipe, and the collar is sleeved on the support rod. A pressure plate is fixedly connected to the end of the support rod near the exhaust pipe. There is an angle between the pressure plate and the support rod. The pressure plate is located on the side of the support rod away from the flange axis. The drive plate is located on the side of the upright near the exhaust pipe and is connected to the upright.

[0016] By adopting the above technical solution, the support rod is located at the bottom of the upright. After both flanges are fixed to their corresponding mating flanges, the operator adjusts the pressure plate so that it is located on the side of the flange closer to the exhaust pipe. The movement of the pressure plate drives the support rod, upright, and drive plate to move. When the flue gas flows through the heat exchanger module, evaporator module, and economizer module in sequence, the flue gas pushes the drive plate to move. The movement of the drive plate drives the upright, support rod, and pressure plate to move into the bellows, thereby causing the pressure plate to push the mating flange closer to the flange. During the flue gas flow, the flue gas makes the connection between the mating flange and the flange of the module closer to the exhaust pipe more stable, improving the effect of the expansion joint connecting two adjacent modules.

[0017] Optionally, there are two support rods, and a fixing block is fixedly connected to the upright rod. The fixing block is located between two collars, and a support spring is provided between the collars and the fixing block. The two ends of the support spring are fixedly connected to the corresponding collars and the fixing block, respectively.

[0018] By adopting the above technical solution, the support spring limits the position of the support rod and the pressure plate, so that the two pressure plates cooperate to fix the docking flange and flange plate near the exhaust pipe, thereby improving the connection effect of the pressure plate between the flange plate and the docking flange.

[0019] Optionally, the collar may also include a reinforcement component to further improve the connection effect of the expansion joint between the two modules.

[0020] By adopting the above technical solution, the connection effect of the expansion joint to two adjacent modules has been further optimized.

[0021] Optionally, the reinforcement component includes a mounting groove on the end face of the mounting rod near the air outlet pipe, the depth direction of the mounting groove is set along the axial direction of the mounting rod, a push rod is slidably inserted in the mounting groove, the end of the push rod away from the connecting rod is fixedly connected to the flange near the air outlet pipe, and a drive plate is located between multiple push rods, and the drive plate is fixedly connected to the push rods.

[0022] By adopting the above technical solution, when the drive plate moves, the drive plate drives the push rod to move, which in turn pushes the flange near the air outlet pipe toward the corresponding mating flange, thereby improving the effect of the expansion joint connecting two adjacent modules.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up superheater modules, evaporator modules, economizer modules, steam drums, and protective plates, the number of pipes that operators need to assemble and weld on-site during the installation of waste heat boilers is reduced, thus shortening the time required for the installation of waste heat boilers.

[0025] 2. By setting up mounting rods, uprights, connecting rings, collars, support rods, and pressure plates, the flue gas makes the connection between the module and the flange near the exhaust pipe more stable during the flue gas flow, and the connection between the flange and the flange plate is improved, thus enhancing the effect of the expansion joint in connecting two adjacent modules.

[0026] 3. By setting up mounting slots and push rods, the expansion joint can better connect two adjacent modules. Attached Figure Description

[0027] Figure 1 This is a schematic diagram illustrating the overall structure of the modular waste heat boiler in Embodiment 1 of this application.

[0028] Figure 2 This is a schematic diagram illustrating the overall structure of the expansion joint in Embodiment 1 of this application.

[0029] Figure 3 This is a cross-sectional view of the overall structure of the modular waste heat boiler as shown in Embodiment 2 of this application.

[0030] Figure 4 This is a cross-sectional view of the overall structure of the fixed component in Embodiment 2 of this application.

[0031] Figure 5 This is a cross-sectional view of the overall structure of the reinforcement component as shown in Embodiment 2 of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Superheater module; 11. Protective plate; 12. Connecting flange; 2. Evaporator module; 3. Economizer module; 4. Steam drum; 5. Exhaust pipe; 6. Outlet pipe; 7. Expansion joint; 71. Flange; 72. Bellows; 8. Fixing assembly; 81. Connecting rod; 82. Mounting rod; 83. Vertical pole; 831. Connecting ring; 832. Fixing block; 84. Collar; 85. Support rod; 86. Pressure plate; 87. Support spring; 88. Fixing rod; 89. Drive plate; 891. Through hole; 9. Reinforcing assembly; 91. Mounting groove; 92. Push rod. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0034] This application discloses a modular waste heat boiler.

[0035] Example 1

[0036] Reference Figure 1 The modular waste heat boiler includes a superheater module 1, an evaporator module 2, an economizer module 3, and a steam drum 4. The superheater module 1 includes several protective plates 11, which form a closed space. The pipes and headers corresponding to the superheater are fixed in the space enclosed by the protective plates 11. A docking flange 12 is fixedly connected to each of the two opposite side protective plates 11. The two docking flanges 12 have the same axial direction. Through holes 891 are opened at the positions corresponding to the protective plates 11 and the docking flanges 12, so that the space enclosed by the protective plates 11 is connected to the outside. The protective plate 11 structures of the evaporator module 2 and the economizer module 3 are the same as those of the protective plate 11 of the superheater module 1. The pipes and headers corresponding to the evaporator and the economizer are fixedly connected in the space enclosed by the corresponding protective plates 11.

[0037] The superheater module 1, evaporator module 2, and economizer module 3 are arranged sequentially from the exhaust pipe 5 toward the outlet pipe 6. The protective plate 11 of one of the connecting flanges 12 of the superheater module 1 corresponds to the protective plate 11 of one of the connecting flanges 12 of the evaporator module 2, and the protective plate 11 of the other connecting flange 12 of the evaporator module 2 corresponds to the protective plate 11 of one of the connecting flanges 12 of the economizer module 3. An expansion joint 7 is provided between two adjacent connecting flanges 12. The space enclosed by the protective plates 11 of the superheater module 1 and the space enclosed by the protective plates 11 of the evaporator module 2 are connected through the expansion joint 7, and the space enclosed by the protective plates 11 of the evaporator module 2 and the space enclosed by the protective plates 11 of the economizer module 3 are also connected through the expansion joint 7.

[0038] Reference Figure 1 and Figure 2 The expansion joint 7 includes two flanges 71 corresponding to the docking flanges 12 and a bellows 72 disposed between the two flanges 71. The two flanges 71 correspond to two adjacent docking flanges 12 respectively, and the flanges 71 and the corresponding docking flanges 12 are coaxial. The ends of the bellows 72 are fixedly connected to the corresponding flanges 71.

[0039] Superheater module 1, evaporator module 2, and economizer module 3 are all manufactured in the factory. When superheater module 1, evaporator module 2, and economizer module 3 are delivered to their destination, the operator positions them and fixes the flange 12 of superheater module 1 away from evaporator module 2 to the flange on the exhaust pipe 5 with bolts and nuts. Then, an expansion joint 7 is taken and its two flanges 71 are fixed to the corresponding flanges 12 with bolts and nuts.

[0040] After two adjacent connecting flanges 12 are connected through expansion joints 7, the connecting flange 12 of the economizer module 3 away from the evaporator module 2 is fixed to the flange on the outlet pipe 6 with bolts and nuts; at this time, the space enclosed by the corresponding protective plates 11 of the superheater module 1, evaporator module 2 and economizer module 3 is connected, and the flue gas in the outlet pipe 6 flows through the superheater module 1, evaporator module 2 and economizer module 3 in sequence, and then the flue gas is discharged along the outlet pipe 6.

[0041] After the superheater module 1, evaporator module 2, and economizer module 3 are installed, the steam drum 4 is fixed to the top cover plate 11. Then, the working fluid side pipelines in the superheater module 1, evaporator module 2, and economizer module 3 are connected to the steam drum 4. At this point, the installation of the waste heat boiler is completed. This reduces the need for operators to weld a large number of pipelines on-site during the installation of the waste heat boiler, thereby shortening the installation time. During the use of the waste heat boiler, when the cover plate 11 undergoes thermal expansion and contraction, causing changes in the gap between two adjacent modules, the corrugated pipe 72 also deforms accordingly, reducing the need to replace some parts of the waste heat boiler due to deformation of the cover plate 11.

[0042] The implementation principle of Embodiment 1 of this application is as follows: When installing the waste heat boiler, the operator first places the superheater module 1, the evaporator module 2 and the economizer module 3 in the predetermined positions. Then, the connecting flange 12 on the superheater module 1 near the exhaust pipe 5 is fixed to the flange on the exhaust pipe 5. Then, two adjacent connecting flanges 12 are fixed to two flanges 71 on an expansion joint 7 respectively. The connecting flange 12 of the economizer module 3 near the exhaust pipe 6 is fixed to the exhaust pipe 6. Finally, the steam drum 4 is fixed to the top protective plate 11, and the working fluid side pipelines of the superheater module 1, the evaporator module 2 and the economizer module 3 are fixedly connected to the steam drum 4.

[0043] Example 2

[0044] Reference Figure 3 and Figure 4 The airflow generated by the flue gas may cause the flange 71 and the corresponding mating flange 12 to vibrate, which may cause the mating flange 12 to lose contact with the flange 71, thus adversely affecting the connection effect of the expansion joint 7 to the two adjacent modules. In order to improve the above problem, this embodiment provides a fixing component 8 based on embodiment 1. The fixing component 8 is located in the bellows 72. The fixing component 8 includes two connecting rods 81 that are vertically fixedly connected to the flange 71 near the exhaust pipe 5. The connecting rods 81 are fixedly connected to the side of the flange 71 near the bellows 72. The length direction of the two connecting rods 81 is arranged along the axial direction of the flange 71, and the two connecting rods 81 are arranged in a vertical direction. A mounting rod 82 is fixedly connected to the end of the connecting rod 81 away from the exhaust pipe 5. The mounting rod 82 is arranged coaxially with the connecting rod 81, and the diameter of the mounting rod 82 is larger than the diameter of the connecting rod 81.

[0045] A vertical pole 83 is provided between the two mounting rods 82. The vertical pole 83 is set vertically, and the projection of the axis of the flange 71 along the axial direction of the flange 71 is located on the vertical pole 83. A connecting ring 831 is fixedly connected to both ends of the vertical pole 83. The inner diameter of the two connecting rings 831 is larger than the diameter of the mounting rod 82. The two connecting rings 831 are respectively sleeved on the two mounting rods 82, and the connecting rings 831 slide along the axial direction of the mounting rod 82.

[0046] Two collars 84 are fitted on the upright 83. The two collars 84 are distributed along the axial direction of the upright 83. The axial direction of the collars 84 is set along the axial direction of the upright 83. A support rod 85 is vertically fixedly connected to the side wall of the collar 84. The axis of the support rod 85 is perpendicular to the axis of the upright 83. A pressure plate 86 is vertically fixedly connected to the end of the support rod 85 away from the collar 84. The upper pressure plate 86 is located above the corresponding support rod 85, and the lower pressure plate 86 is located below the corresponding support rod 85.

[0047] A fixing block 832 is fixedly connected to the upright 83. The fixing block 832 is located in the middle of the upright 83, and the upright 83 passes through the fixing block 832. The fixing block 832 is located between two collars 84. A support spring 87 is fixedly connected to the end face of the collar 84 near the fixing block 832. The support spring 87 is sleeved on the upright 83, and the lower end of the support spring 87 is fixedly connected to the fixing block 832. A fixing rod 88 is also vertically fixedly connected to the side wall of the collar 84. The fixing rod 88 is coaxially arranged with the support rod 85. A drive plate 89 is provided on the side of the fixing rod 88 away from the upright 83. The drive plate 89 is perpendicular to the fixing rod 88. Each fixing rod 88 is fixedly connected to the drive plate 89. A through hole 891 is opened on the drive plate 89, so that the flue gas can pass through the through hole 891 to the next module.

[0048] When both flanges 71 are fixed to their corresponding mating flanges 12, the operator pushes the support rod 85 towards the fixing block 832. The movement of the support rod 85 causes the corresponding pressure plate 86 and collar 84 to move. As the collar 84 moves, it compresses the support spring 87. When the distance between the surfaces of the two pressure plates 86 is less than the inner diameter of the flange 71, the push plate, support rod 85, and upright rod 83 are pulled. When the push plate is located on the side of the mating flange 12 away from the flange 71, the two support rods 85 are released. At this time, the support spring 87 returns to its original shape and pushes the support rod 85 and push plate to move. When the support rod 85 moves to abut against the inner wall of the flange 71, the support spring 87 is still in a compressed state, and the support spring 87 fixes the height of the support rod 85.

[0049] After the waste heat boiler is installed, the flue gas flows into the superheater module 1 through the exhaust pipe 5, then flows through the evaporator module 2 and the economizer module 3 in sequence, and finally exits the waste heat boiler through the exhaust pipe 6. When the flue gas flows, it pushes the drive plate 89 to move away from the mounting rod 82. The movement of the drive plate 89 drives the fixed rod 88, collar 84, upright 83, support rod 85 and pressure plate 86 to move. When the pressure plate 86 contacts the docking flange 12, as the drive plate 89 continues to move, the pressure plate 86 pushes the docking flange 12 to move closer to the flange 71, thereby improving the docking effect between the docking flange 12 and the flange 71, reducing the possibility of the docking flange 12 and the flange 71 losing contact, and optimizing the connection effect of the expansion joint 7 to the two adjacent modules.

[0050] Reference Figure 4 and Figure 5 To further improve the connection effect of the expansion joint 7 to the two adjacent modules, the bellows 72 is also provided with a reinforcing component 9. The reinforcing component 9 includes an installation groove 91 opened at the end of the mounting rod 82 away from the connecting rod 81. The depth direction of the installation groove 91 is set along the axial direction of the mounting rod 82. A push rod 92 is slidably inserted into the installation groove 91. The push rod 92 is set coaxially with the mounting rod 82. The end of the push rod 92 away from the connecting rod 81 is fixedly connected to the flange 71 on the side of the push plate away from the connecting rod 81. The longitudinal section of the drive plate 89 is circular. The drive plate 89 is located between the two push rods 92, and the side wall of the drive plate 89 is fixedly connected to the push rods 92.

[0051] As the flue gas pushes the drive plate 89 to move, the drive plate 89 moves and drives the push rod 92 to move out of the mounting groove 91. The push rod 92 moves and pushes the flange 71 to move closer to the corresponding docking flange 12, so that the flange 71 abuts against the corresponding docking flange 12. This reduces the situation where the airflow generated during flue gas flow causes the flange 71, which is far away from the exhaust pipe 5, to separate from the corresponding docking flange 12, and further improves the connection effect of the expansion joint 7 to the two adjacent modules.

[0052] The implementation principle of Embodiment 2 of this application is as follows: When both flanges 71 of the expansion joint 7 are fixed to the corresponding docking flanges 12, the two support rods 85 are pushed in the direction of mutual approach. The movement of the support rods 85 drives the pressure plate 86 and the collar 84 to move. At the same time, the collar 84 compresses the support spring 87, and then pulls the pressure plate 86. The movement of the pressure plate 86 drives the upright 83, the drive plate 89 and the push rod 92 to move. When the pressure plate 86 is located on the side of the docking flange 12 near the exhaust pipe 5 away from the corresponding flange 71, the operator releases the two push plates. At this time, the support spring 87 restores its deformation and pushes the collar 84 and the support rod 85 to move upward until the support rod 85 abuts against the inner wall of the flange 71.

[0053] When the flue gas flows in the waste heat boiler, the flue gas pushes the drive plate 89 to move closer to the exhaust pipe 6. The movement of the drive plate 89 pulls the fixed rod 88, the support rod 85 and the pressure plate 86 to move, so that the pressure plate 86 pushes the docking flange 12 close to the exhaust pipe 5 to abut against the corresponding flange 71. At the same time, the drive plate 89 pushes the push rod 92 and the flange 71 away from the exhaust pipe 5 to move, so that the flange 71 away from the exhaust pipe 5 abuts against the corresponding docking flange 12.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A modular waste heat boiler, wherein the waste heat boiler is located between the exhaust pipe (5) and the outlet pipe (6), characterized in that: The waste heat boiler includes a superheater module (1), an evaporator module (2), an economizer module (3), and a steam drum (4). The superheater module (1) includes multiple protective plates (11). The pipes and headers corresponding to the superheater are installed in the space enclosed by the multiple protective plates (11). The structures of the protective plates (11) of the evaporator module (2) and the economizer module (3) are the same as those of the protective plates (11) of the superheater module (1). The pipes and headers corresponding to the evaporator are installed in the space enclosed by the corresponding protective plates (11). The pipes and headers corresponding to the economizer are also installed in the space enclosed by the corresponding protective plates (11). 11) In the enclosed space, the space enclosed by the protective plate (11) corresponding to the superheater module (1) is connected to the exhaust pipe (5), the space enclosed by the protective plate (11) corresponding to the economizer module (3) is connected to the outlet pipe (6), the space enclosed by the protective plate (11) corresponding to the evaporator module (2), the space enclosed by the protective plate (11) corresponding to the economizer module (3), and the space enclosed by the protective plate (11) corresponding to the superheater module (1) are all connected, and the working fluid side pipes of the superheater module (1), evaporator module (2), and economizer module (3) are all connected to the steam drum (4); Two of the guard plates (11) of the superheater module (1) are fixedly connected to a docking flange (12). Holes are opened on the guard plates (11) at positions corresponding to the docking flanges (12). The guard plate (11) structures of the evaporator module (2) and the economizer module (3) are the same as those of the guard plate (11) of the superheater module (1). Two adjacent docking flanges (12) are connected. An expansion joint (7) is provided between two adjacent mating flanges (12). The expansion joint (7) includes two flanges (71) and a bellows (72) disposed between the two flanges (71). The axial direction of the bellows (72) is consistent with the axial direction of the two flanges (71). The ends of the bellows (72) are fixedly connected to the corresponding flanges (71). The two flanges (71) are fixedly connected to the corresponding mating flanges (12). The bellows (72) is provided with a fixing component (8) to improve the connection effect of the expansion joint (7) to the two modules. The fixing component (8) includes multiple mounting rods (82), uprights (83), support rods (85), pressure plates (86) and drive plates (89). Multiple mounting rods (82) are fixedly connected to a flange (71) near the exhaust pipe (5). The mounting rods (82) are located on the side of the exhaust pipe (5) near the bellows (72). The multiple mounting rods (82) are distributed circumferentially along the flange (71). A connecting ring (831) is fixedly connected to both ends of the upright (83). The two connecting rings (831) are respectively sleeved on the two mounting rods (82). The length direction of the support rod (85) is arranged radially along the flange (71). The support rod (85) is located near the upright (83). On one side of the exhaust pipe (5), a collar (84) is fixedly connected to the end of the support rod (85) away from the exhaust pipe (5). The collar (84) is sleeved on the support rod (85). A pressure plate (86) is fixedly connected to the end of the support rod (85) near the exhaust pipe (5). There is an angle between the pressure plate (86) and the support rod (85). The pressure plate (86) is located on the side of the support rod (85) away from the axis of the flange (71). The drive plate (89) is located on the side of the upright (83) near the exhaust pipe (6). The drive plate (89) is connected to the upright (83).

2. The modular waste heat boiler according to claim 1, characterized in that: There are two support rods (85). A fixing block (832) is fixedly connected to the upright (83). The fixing block (832) is located between two collars (84). A support spring (87) is provided between the collar (84) and the fixing block (832). The two ends of the support spring (87) are fixedly connected to the corresponding collar (84) and the fixing block (832) respectively.

3. A modular waste heat boiler according to claim 1, characterized in that: The collar (84) is also provided with a reinforcement component (9) to further improve the connection effect of the expansion joint (7) between the two modules.

4. A modular waste heat boiler according to claim 3, characterized in that: The reinforcement component (9) includes a mounting groove (91) opened on the end face of the mounting rod (82) near the air outlet pipe (6). The depth direction of the mounting groove (91) is set along the axial direction of the mounting rod (82). A push rod (92) is slidably inserted in the mounting groove (91). The end of the push rod (92) away from the connecting rod (81) is fixedly connected to the flange (71) near the air outlet pipe (6). The drive plate (89) is located between multiple push rods (92). The drive plate (89) is fixedly connected to the push rods (92).

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