Tube array heat exchange device

Abstract

The invention discloses a tube nest heat exchange device which comprises a shell, a fixed tube plate, a movable module, a partition plate and a plurality of heat exchange pipelines, the shell is provided with a liquid inlet and a liquid outlet, the fixed tube plate is fixedly connected to the inner side of the shell, the movable module is opposite to the fixed tube plate, a liquid inlet cavity and a liquid outlet cavity are formed in the two sides of the partition plate respectively, the liquid inlet cavity is communicated with the liquid outlet cavity, and the liquid inlet cavity is communicated with the liquid outlet cavity. Fluid enters the liquid inlet cavity from the liquid inlet, then enters the liquid outlet cavity and finally flows out from the liquid outlet, the heat exchange pipelines are located in the liquid inlet cavity and the liquid outlet cavity, heat exchange media are introduced into the heat exchange pipelines, heat exchange can be conducted between the heat exchange pipelines and the fluid flowing in the liquid inlet cavity and the liquid outlet cavity, and the heat exchange function of the heat exchanger is achieved. The two ends of the heat exchange pipeline are fixed to the fixed pipe plate and the movable module respectively, and the movable module is in sliding connection with the shell, so that when the heat exchange pipeline stretches out and draws back due to thermal expansion and cold contraction, the movable module can be driven to slide synchronously, and the heat exchange pipeline can be prevented from being bent and damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange equipment, and particularly relates to a shell-and-tube heat exchange device. Background Art

[0002] A shell-and-tube heat exchanger is an energy-saving device that realizes heat transfer between materials among two or more fluids at different temperatures, which makes heat transfer from a fluid with a higher temperature to a fluid with a lower temperature, so that the temperature of the fluid reaches the specified index of the process. It mainly conducts heat exchange through the heat exchange between the fluid inside the tube and the fluid inside the cavity.

[0003] For example, the shell-and-tube heat exchanger disclosed in the patent document with the publication number CN118912980B includes a shell, a spiral partition plate assembly and a heat exchange tube assembly. The shell is provided with a first inlet, a first outlet, a second inlet and a second outlet; the spiral partition plate assembly encloses a connected spiral-in cavity and a spiral-out cavity. The spiral-in cavity is communicated with the second inlet, and the spiral-out cavity is communicated with the second outlet; the heat exchange tube assembly includes a plurality of heat exchange tubes penetrating through the spiral-in cavity and the spiral-out cavity, and is communicated with the first inlet and the first outlet. The fluid with a higher temperature enters the heat exchange tube and exchanges heat with the fluid with a lower temperature in the spiral-in cavity and the spiral-out cavity through the heat conduction of the heat exchange tube wall. And this shell-and-tube heat exchanger eliminates the heat exchange dead angle and improves the heat exchange efficiency by installing a spiral partition plate assembly in the shell to form a connected spiral-in cavity and a spiral-out cavity.

[0004] Although the above shell-and-tube heat exchanger can conduct heat exchange through the fluid inside the heat exchange tube and the fluid inside the cavity, due to the different temperatures of the fluid inside the tube and the fluid inside the cavity before and after heat exchange, affected by thermal expansion and contraction, the heat exchange tube is prone to deformation and even breakage during the heat exchange process, thus reducing the service life of the heat exchanger. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and provide a shell-and-tube heat exchange device to solve the technical problem that the heat exchange tubes of the shell-and-tube heat exchange device in the prior art are prone to deformation and damage during the heat exchange process.

[0006] To achieve the above technical purpose, the present invention adopts the following technical solutions: The present invention provides a shell-and-tube heat exchange device, including: A shell, provided with a liquid inlet and a liquid outlet; A fixed tube sheet, fixedly connected to the shell; A movable module, opposite to the fixed tube sheet and slidably connected to the shell; A spacer plate, fixed to the fixed tube sheet and extending towards the movable module. An inlet liquid cavity and an outlet liquid cavity are respectively formed on both sides of the spacer plate. The inlet liquid cavity and the outlet liquid cavity are communicated, and the liquid inlet and the liquid outlet are respectively communicated with the inlet liquid cavity and the outlet liquid cavity; A number of heat exchange pipes are respectively located in the liquid inlet chamber and the liquid outlet chamber. One end of each heat exchange pipe is fixed to the fixed tube sheet, and the other end of each heat exchange pipe is fixedly connected to the movable module.

[0007] In some embodiments, the movable module includes a movable tube sheet and a baffle cover. The movable tube sheet is slidably connected to the housing. The baffle cover is located on the side of the movable tube sheet away from the fixed tube sheet and is fixedly connected to the movable tube sheet. A baffle chamber is formed between the baffle cover and the movable tube sheet. The heat exchange pipes are fixed to the movable tube sheet and communicate with the baffle chamber.

[0008] In some embodiments, the baffle cover fits one side of the movable tube sheet. The movable module further includes a gasket and a locking rod. The gasket fits the other side of the movable tube sheet. The locking rod connects the gasket and the baffle cover to lock the gasket and the baffle cover.

[0009] In some embodiments, the shell-and-tube heat exchange device further includes a first partition plate. The first partition plate is fixed to the side of the fixed tube sheet away from the movable tube sheet. A first cavity and a second cavity are respectively formed on both sides of the movable tube sheet. Some of the heat exchange pipes communicate with the first cavity, and some of the other heat exchange pipes communicate with the second cavity.

[0010] In some embodiments, the movable module further includes a second partition plate. The second partition plate is located in the baffle chamber and is arranged crosswise with the first partition plate. The second partition plate divides the baffle chamber into a first sub-chamber and a second sub-chamber. The heat exchange pipes located in the liquid inlet chamber communicate with the first sub-chamber, and the heat exchange pipes located in the liquid outlet chamber communicate with the second sub-chamber.

[0011] In some embodiments, the shell-and-tube heat exchange device further includes a third partition plate. The third partition plate is located in the first cavity and is arranged crosswise with the first partition plate. A liquid supply chamber and a liquid return chamber are respectively formed on both sides of the third partition plate. The heat exchange pipes communicating with the first cavity communicate with the liquid inlet chamber and the liquid outlet chamber. The heat exchange pipes communicating with the liquid inlet chamber communicate with the first sub-chamber, and the heat exchange pipes communicating with the liquid outlet chamber communicate with the second sub-chamber.

[0012] In some embodiments, the shell-and-tube heat exchange device further includes a number of baffle plates. Each baffle plate is staggeredly arranged in the liquid inlet chamber and the liquid outlet chamber, so that the liquid inlet chamber and the liquid outlet chamber form a continuously curved baffle channel. The liquid inlet and the liquid outlet are respectively communicated with both ends of the baffle channel.

[0013] In some embodiments, the shell-and-tube heat exchange device further includes a pull rod. One end of the pull rod is fixed to the fixed tube sheet, and the other end of the pull rod extends towards the movable module and sequentially penetrates through each baffle plate.

[0014] In some embodiments, a distance sleeve is sleeved on the pull rod, and the distance sleeve is located between adjacent baffle plates and abuts against the baffle plates.

[0015] In some embodiments, the housing includes a shell and a head, and the fixed tube sheet is clamped between the shell and the head.

[0016] Compared with the prior art, the shell-and-tube heat exchange device provided by the present invention is provided with a housing, a fixed tube sheet, a movable module, a spacer plate and a plurality of heat exchange pipes. The housing is provided with a liquid inlet and a liquid outlet. The fixed tube sheet is fixedly connected to the inner side of the housing. The movable module is opposite to the fixed tube sheet. Liquid inlet chambers and liquid outlet chambers are respectively formed on both sides of the spacer plate. The liquid inlet chamber and the liquid outlet chamber are communicated. The liquid inlet and the liquid outlet are respectively communicated with the liquid inlet chamber and the liquid outlet chamber. The fluid enters the liquid inlet chamber from the liquid inlet, then enters the liquid outlet chamber, and finally flows out from the liquid outlet. The heat exchange pipes are located in the liquid inlet chamber and the liquid outlet chamber. By introducing a heat exchange medium, the heat exchange pipes can exchange heat with the fluid flowing in the liquid inlet chamber and the liquid outlet chamber, realizing the heat exchange function of the heat exchanger. Both ends of the heat exchange pipes are respectively fixed to the fixed tube sheet and the movable module, realizing limit fixation. Since the movable module is slidably connected to the housing, when the heat exchange pipes expand and contract due to thermal expansion and contraction, the movable module can be driven to slide synchronously, thereby avoiding bending and damage of the heat exchange pipes. Description of the Drawings

[0017] Figure 1 is a schematic structural view of the shell-and-tube heat exchange device provided by an embodiment of the present invention; Figure 2 is a front view of the shell-and-tube heat exchange device provided by an embodiment of the present invention; Figure 3 is along Figure 2 the sectional view taken along line A-A in Figure 4 is a schematic internal structural view of the shell-and-tube heat exchange device provided by an embodiment of the present invention; Figure 5 is a schematic structural view of the movable module of the shell-and-tube heat exchange device provided by an embodiment of the present invention; Figure 6 is a front view of the movable module of the shell-and-tube heat exchange device provided by an embodiment of the present invention; Figure 7 is along Figure 6 the sectional view taken along line A-A in

[0018] Reference numerals in the drawings: 10 - housing 11 - liquid inlet 12 - liquid outlet 13 - liquid inlet chamber 14 - liquid outlet chamber 15 - shell 16 - head 17 - medium inlet 18 - medium outlet 20 - Fixed tube sheet 30 - Movable module 31 - Movable tube sheet 32 - Baffle cover 33 - Baffle chamber 34 - Gasket 35 - Second partition plate 40 - Spacer plate 50 - Heat exchange pipe 60 - First partition plate 61 - First cavity 62 - Second cavity 70 - Third partition plate 80 - Baffle plate 90 - Tie rod 91 - Spacing sleeve 331 - First sub - cavity 332 - Second sub - cavity 611 - Liquid supply cavity 612 - Liquid return cavity. Specific implementation mode

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer and more understandable, the following further details the present invention in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] In order to solve the technical problem that the heat exchange tubes of the tube - type heat exchange device in the prior art are prone to deformation and damage during the heat exchange process, the present invention provides a tube - type heat exchange device, which can realize the free expansion and contraction of one section of the heat exchange pipe, thereby avoiding the bending and damage of the pipe during the heat exchange process.

[0021] An embodiment of the present invention provides a tube - type heat exchange device, as Figures 1-4 shown, including a housing 10, a fixed tube sheet 20, a movable module 30, a spacer plate 40 and a plurality of heat exchange pipes 50. The housing 10 is provided with a liquid inlet 11 and a liquid outlet 12; the fixed tube sheet 20 is fixedly connected to the housing 10; the movable module 30 is opposite to the fixed tube sheet 20 and slidably connected to the housing 10; the spacer plate 40 is fixed to the fixed tube sheet 20 and extends towards the movable module 30. Liquid inlet chambers 13 and liquid outlet chambers 14 are respectively formed on both sides of the spacer plate 40. The liquid inlet chamber 13 and the liquid outlet chamber 14 are communicated, and the liquid inlet 11 and the liquid outlet 12 are respectively communicated with the liquid inlet chamber 13 and the liquid outlet chamber 14; each heat exchange pipe 50 is respectively located in the liquid inlet chamber 13 and the liquid outlet chamber 14, one end of each heat exchange pipe 50 is fixed to the fixed tube sheet 20, and the other end of each heat exchange pipe 50 is fixedly connected to the movable module 30.

[0022] Specifically, the shell-and-tube heat exchange device is provided with a housing 10, a fixed tube sheet 20, a movable module 30, a spacer plate 40 and a plurality of heat exchange pipes 50. The housing 10 is provided with a liquid inlet 11 and a liquid outlet 12. The fixed tube sheet 20 is fixedly connected to the inner side of the housing 10. The movable module 30 faces the fixed tube sheet 20. Both sides of the spacer plate 40 respectively form a liquid inlet chamber 13 and a liquid outlet chamber 14. The liquid inlet chamber 13 and the liquid outlet chamber 14 are communicated. The liquid inlet 11 and the liquid outlet 12 are respectively communicated with the liquid inlet chamber 13 and the liquid outlet chamber 14. The fluid enters the liquid inlet chamber 13 from the liquid inlet 11, then enters the liquid outlet chamber 14, and finally flows out from the liquid outlet 12. The heat exchange pipes 50 are located in the liquid inlet chamber 13 and the liquid outlet chamber 14. By introducing a heat exchange medium, the heat exchange pipes 50 can exchange heat with the fluid flowing in the liquid inlet chamber 13 and the liquid outlet chamber 14, realizing the heat exchange function of the heat exchanger. Both ends of the heat exchange pipes 50 are respectively fixed to the fixed tube sheet 20 and the movable module 30 to achieve limit fixation. Since the movable module 30 is slidably connected to the housing 10, when the heat exchange pipes 50 expand and contract due to thermal expansion and contraction, the movable module 30 can be driven to slide synchronously, thereby avoiding bending and damage of the heat exchange pipes 50.

[0023] In this embodiment, the housing 10 is in a tower-like structure.

[0024] It can be understood that the fixed tube sheet 20 can be welded to the housing 10 or connected to the housing 10 through connection structures such as clamping grooves to achieve fixation with the housing 10.

[0025] In one of the embodiments, as Figures 1-3 shown, the housing 10 includes a tube shell 15 and a head 16. The fixed tube sheet 20 is clamped between the tube shell 15 and the head 16. Specifically, the tube shell 15 and the head 16 can be combined to form the structure of the housing 10. The housing 10 and the head 16 achieve the fixation of the fixed tube sheet 20 through the clamping of the fixed tube sheet 20, and achieve the seal between the fixed tube sheet 20 and the housing 10. And only by disassembling the head 16, the fixed tube sheet 20 and the heat exchange pipes 50 can be taken out, providing convenience for the disassembly and assembly of the heat exchange pipes 50.

[0026] In this embodiment, the tube shell 15 and the head 16 are provided with flange structures. Bolts lock the tube shell 15 and the head 16 by connecting the flange structures of the tube shell 15 and the head 16.

[0027] It can be understood that the movable module 30 can be any structure such as a sliding block or a sliding plate that is slidably connected to the housing 10 and can be connected to the heat exchange pipes 50.

[0028] In one of the embodiments, as Figures 3-7As shown, the movable module 30 includes a movable tube sheet 31 and a baffle cover 32. The movable tube sheet 31 is slidably connected to the housing 10. The baffle cover 32 is located on the side of the movable tube sheet 31 away from the fixed tube sheet 20 and is fixedly connected to the movable tube sheet 31. A baffle chamber 33 is formed between the baffle cover 32 and the movable tube sheet 31. The heat exchange pipes 50 are fixed to the movable tube sheet 31 and communicate with the baffle chamber 33. Specifically, the movable tube sheet 31 fixes each heat supply pipe and realizes the sliding connection with the housing 10. Since the baffle cover 32 and the movable tube sheet 31 form the baffle chamber 33, and the heat exchange pipes 50 communicate with the baffle chamber 33, the heat exchange medium can flow into and enter the baffle chamber 33 from some of the heat exchange pipes 50, and then baffle in the baffle chamber 33 and enter another part of the heat exchange pipes 50. Therefore, the heat exchange medium can be made to baffle back and forth in the housing 10, increasing the residence time of the heat exchange medium in the housing 10, and thus improving the heat utilization rate of the heat exchange medium.

[0029] In this embodiment, as Figure 3 shown, the movable tube sheet 31 is spaced from the inner wall of the housing 10 so that the movable tube sheet 31 can make a small radial movement to improve the error tolerance rate.

[0030] In this embodiment, as Figures 3-7 shown, the baffle cover 32 is an arc-shaped structure to facilitate the baffle of the heat exchange medium.

[0031] In one of the embodiments, as Figures 3-7 shown, the baffle cover 32 is attached to one side of the movable tube sheet 31. The movable module 30 further includes a gasket 34 and a locking rod. The gasket 34 is attached to the other side of the movable tube sheet 31. The locking rod connects the gasket 34 and the baffle cover 32 to lock the gasket 34 and the baffle cover 32. Specifically, through the clamping action of the gasket 34 and the baffle cover 32 on the movable tube sheet 31, while fixing the baffle cover 32 and the movable tube sheet 31, the seal between the baffle cover 32 and the movable tube sheet 31 can be realized, effectively preventing the heat exchange medium from leaking out through the gap between the movable tube sheet 31 and the baffle cover 32.

[0032] In this embodiment, the locking rod is a screw rod.

[0033] In this embodiment, the heat exchange pipes 50 fill the liquid inlet chamber 13 and the liquid outlet chamber 14 (only part of the heat exchange pipes 50 are shown in the figure).

[0034] In one of the embodiments, as Figures 3-4As shown, the shell-and-tube heat exchange device further includes a first partition plate 60, which is fixed to the side of the fixed tube sheet 20 away from the movable tube sheet 31. A first cavity 61 and a second cavity 62 are respectively formed on both sides of the movable tube sheet 31. Part of the heat exchange pipes 50 communicate with the first cavity 61, and the other part of the heat exchange pipes 50 communicate with the second cavity 62. Specifically, after the heat exchange medium enters the first cavity 61, it enters the heat exchange pipes 50 communicating with the first cavity 61, then enters the baffle cavity 33 from the heat exchange pipes 50, and then flows through the other part of the heat exchange pipes 50 to the second cavity 62. Through this setting, the first cavity 61 can be used as the inlet cavity of the heat exchange medium, and the second cavity 62 can be used as the outlet cavity of the medium, so as to facilitate the supply and output of the medium.

[0035] In this embodiment, as Figures 3-4 shown, the first partition plate 60 is vertically arranged inside the head 16. One end of the first partition plate 60 is hermetically attached to the fixed tube sheet 20, and the other end of the first partition plate 60 is hermetically attached to the inner wall of the head 16.

[0036] In another embodiment, as Figure 3 and 7 shown, the movable module 30 further includes a second partition plate 35, which is located in the baffle cavity 33 and intersects with the first partition plate 60. The second partition plate 35 divides the baffle cavity 33 into a first sub-cavity 331 and a second sub-cavity 332. The heat exchange pipes 50 located in the liquid inlet cavity 13 communicate with the first sub-cavity 331, and the heat exchange pipes 50 located in the liquid outlet cavity 14 communicate with the second sub-cavity 332. Specifically, the third divides the baffle cavity 33 into a first sub-cavity 331 and a second sub-cavity 332, so that after the heat exchange medium in the first cavity 61 enters part of the heat exchange pipes 50, it will enter the first sub-cavity 331 and the second sub-cavity 332 respectively through the heat exchange pipes 50, and then flow through the other part of the baffle pipes connecting the first sub-cavity 331 and the second sub-cavity 332 and finally enter the second cavity 62; through the division of the baffle cavity 33 by the second partition plate 35, the formation of turbulence of the heat exchange medium in the baffle cavity 33 can be avoided, so that after the heat exchange medium enters the baffle cavity 33, it can flow out of the baffle cavity 33 in time to ensure uniform heat exchange.

[0037] In this embodiment, the second partition plate 35 is horizontally arranged inside the baffle cover 32. One end of the second partition plate 35 is hermetically attached to the movable tube sheet 31, and the other end of the first partition plate 60 is hermetically attached to the inner wall of the baffle cover 32.

[0038] In another embodiment, as Figures 3-4As shown in the figure, the shell-and-tube heat exchange device further includes a third partition plate 70. The third partition plate 70 is located in the first cavity 61 and is arranged crosswise with the first partition plate 60. A liquid supply cavity 611 and a liquid return cavity 612 are respectively formed on both sides of the third partition plate 70. The heat exchange pipes 50 communicating with the first cavity 61 are communicated with the liquid inlet cavity 13 and the liquid outlet cavity 14. The heat exchange pipes 50 communicating with the liquid inlet cavity 13 are communicated with the first sub-cavity 331, and the heat exchange pipes 50 communicating with the liquid outlet cavity 14 are communicated with the second sub-cavity 332.

[0039] Specifically, through the partitioning of the first cavity 61 by the third partition plate 70, when the heat exchange medium flows into the liquid supply cavity 611 of the first cavity 61, it will enter each heat exchange pipe 50 communicated with the liquid supply cavity 611, then enter the first sub-cavity 331 of the baffle cavity 33, and make a U-turn at the first sub-cavity 331, enter other heat exchange pipes 50 connected to the first sub-cavity 331, then enter the second cavity 62, make an upward U-turn in the second cavity 62, enter other heat exchange pipes 50 communicated with the second cavity 62, then enter the second sub-cavity 332 through the heat exchange pipes 50, make a U-turn in the second sub-cavity 332 and enter other heat exchange pipes 50 communicated with the second sub-cavity 332, then flow out from the heat exchange pipes 50 into the liquid return cavity 612, and finally flow out from the liquid return cavity 612, forming two round trips of the heat exchange medium with a simple structure and without forming turbulence during the round trip process, so as to make full use of the heat of the heat exchange medium and improve the heat exchange efficiency.

[0040] In this embodiment, the second partition plate 35, the spacer plate 40 and the third partition plate 70 are flush.

[0041] In this embodiment, through the partitioning of the inside of the head 16 by the first partition plate 60 and the third partition plate 70, the inside of the head 16 can be partitioned into three cavities: the second cavity 62, the liquid inlet cavity 13 and the liquid return cavity 612. The liquid inlet cavity 13 and the liquid return cavity 612 are responsible for the inlet and outlet of the heat exchange medium, and the second cavity 62 is responsible for the U-turn of the heat exchange medium.

[0042] In this embodiment, as Figures 1-4 shown, the housing 10 is further provided with a medium inlet 17 and a medium outlet 18. The medium inlet 17 is communicated with the liquid supply cavity 611, and the medium outlet 18 is communicated with the liquid return cavity 612. The heat exchange medium enters the liquid inlet cavity 13 from the medium inlet 17, makes two U-turns at the heat exchange pipes 50 and then enters the liquid return cavity 612, and finally discharges from the medium outlet 18.

[0043] In one of the embodiments, as Figures 3-4As shown, the tube-in-tube heat exchange device further includes a plurality of baffles 80, each of which is staggeredly arranged at the liquid inlet cavity 13 and the liquid outlet cavity 14, so that the liquid inlet cavity 13 and the liquid outlet cavity 14 form a continuously curved baffle channel, and the liquid inlet 11 and the liquid outlet 12 are respectively connected to the two ends of the baffle channel. Specifically, the baffles 80 can disturb the fluid so that it can fully contact with the heat exchange pipe 50, reduce the fluid flow rate, increase the flow path, and then fully exchange heat with the medium of the heat exchange pipe 50, thereby improving the heat utilization rate and heat exchange efficiency of the heat exchange medium.

[0044] In this embodiment, by combining the double return of the heat exchange medium and the deflection of the fluid, it is possible to fully utilize the heat of the heat exchange medium and improve the heat exchange efficiency of the heat exchanger. Through sufficient heat exchange, the temperature difference before and after the heat exchange medium enters and is discharged is large, and the sliding connection setting of the movable tube sheet 31 can better adapt to the deformation of the heat exchange pipe 50, effectively avoiding bending and damage of the heat exchange pipe 50.

[0045] In one embodiment, if Figures 3-4 As shown, the tube-in-tube heat exchange device further includes a tie rod 90, one end of which is fixed to the fixed tube sheet 20, and the other end of which extends toward the movable module 30 and sequentially penetrates each baffle 80. Specifically, the tie rod 90 can connect each baffle 80, thereby improving the stability of the baffle 80.

[0046] In one embodiment, if Figures 3-4 As shown, the pull rod 90 is sleeved with a distance sleeve 91, which is located between each adjacent baffle 80 and abuts against the baffle 80. Specifically, the distance sleeve 91 can limit the movement of the baffle 80 by abutting against the baffle 80, so that each baffle 80 can maintain a relatively stable distance, thereby promoting the fluid to flow in a regular path and avoiding the formation of turbulence inside the housing 10.

[0047] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A shell and tube heat exchange device, characterized in that: include: A shell body, provided with a liquid inlet and a liquid outlet communicated with the interior of the shell body; A fixed tube sheet fixedly connected to the shell; A movable module, opposite to the fixed tube sheet and slidably connected to the shell; a partition plate fixed to the fixed tube plate and extending toward the movable module, wherein the partition plate divides the interior of the shell into a liquid inlet cavity and a liquid outlet cavity, wherein the liquid inlet cavity and the liquid outlet cavity are in communication with each other, and the liquid inlet cavity and the liquid outlet cavity are in communication with the liquid inlet port and the liquid outlet port, respectively; A plurality of heat exchange pipes are located in the liquid inlet cavity and the liquid outlet cavity, one end of each of the heat exchange pipes is fixed to the fixed tube sheet, and the other end of each of the heat exchange pipes is fixedly connected to the movable module.

2. The shell and tube heat exchange device according to claim 1, characterized in that: The movable module includes a movable tube plate and a baffle, the movable tube plate is slidably connected to the shell, the baffle is connected to the movable tube plate, a baffle cavity is formed between the baffle and the movable tube plate, and the heat exchange pipe is fixed to the movable tube plate and communicated with the baffle cavity.

3. The shell and tube heat exchange device according to claim 2, characterized in that: The deflector is fitted with one side of the movable tube plate, and the movable module further comprises a gasket and a locking rod. The gasket is fitted with the other side of the movable tube plate, and the locking rod connects the gasket and the deflector.

4. The shell and tube heat exchange device according to claim 2, characterized in that: The shell-and-tube heat exchange device also includes a first partition, which is fixed to a side of the fixed tube sheet away from the movable tube sheet. The two sides of the movable tube sheet respectively form a first cavity and a second cavity. Part of the heat exchange pipe is connected to the first cavity, and the other part of the heat exchange pipe is connected to the second cavity.

5. The shell and tube heat exchange device according to claim 4, characterized in that: The active module also includes a second partition, which is located in the deflection chamber and cross-arranged with the first partition. The second partition divides the deflection chamber into a first sub-chamber and a second sub-chamber. The heat exchange pipe located in the liquid inlet chamber is connected to the first sub-chamber, and the heat exchange pipe located in the liquid outlet chamber is connected to the second sub-chamber.

6. The shell and tube heat exchange device according to claim 5, characterized in that: The shell and tube heat exchange device also includes a third partition, which is located in the first cavity and cross-arranged with the first partition, and the two sides of the third partition respectively form a liquid supply cavity and a liquid return cavity, the heat exchange pipe connected to the first cavity is connected to the liquid inlet cavity and the liquid outlet cavity, the heat exchange pipe connected to the liquid inlet cavity is connected to the first sub-cavity, and the heat exchange pipe connected to the liquid outlet cavity is connected to the second sub-cavity.

7. The shell and tube heat exchange device according to any one of claims 1 to 6, characterized in that: The shell and tube heat exchange device also includes a plurality of baffles, each of which is staggeredly arranged in the liquid inlet cavity and the liquid outlet cavity so that the liquid inlet cavity and the liquid outlet cavity form a continuously curved baffle channel, and the liquid inlet and the liquid outlet are respectively connected to the two ends of the baffle channel.

8. The shell and tube heat exchange device according to claim 7, characterized in that: The tube-in-tube heat exchange device further comprises a tie rod, one end of which is fixed to the fixed tube sheet, and the other end of which extends toward the movable module and passes through each of the baffles in sequence.

9. The shell and tube heat exchange device according to claim 8, characterized in that: The pull rod sleeve is provided with a distance sleeve, and the distance sleeve is located between each adjacent baffle and abuts against the baffle.

10. The shell and tube heat exchange device according to any one of claims 1 to 6, characterized in that: The shell comprises a tube shell and a head, and the fixed tube sheet is clamped between the tube shell and the head.

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