Heat exchanger for cooling high-temperature fermentation liquor

Abstract

The application discloses a heat exchanger for cooling high-temperature fermentation liquid, relates to the technical field of the double-pipe heat exchanger, and comprises a base, a plurality of double pipes are vertically arranged on the top of the base, the double pipe comprises an outer pipe and an inner pipe in the outer pipe, the inner pipe is fixedly penetrated through the outer pipe at both ends, the lowermost outer pipe is fixedly arranged, the rest outer pipes are vertically movably arranged, the upper outer wall and the lower outer wall of the outer pipe are provided with a liquid inlet pipe and a liquid outlet pipe, outer pipe communication components for adjusting the communication mode of the outer pipes are arranged between two adjacent outer pipes, and two inner pipe communication components for adjusting the communication mode of the inner pipes are arranged on the top of the base; the outer pipe communication component comprises a movable frame which is vertically movably arranged, an adjusting block is horizontally slidably arranged on the inner wall of the movable frame, an outer pipe series connection groove is penetratingly arranged on the top of the adjusting block, outer pipe parallel connection grooves are arranged on the top and the bottom of the adjusting block, and the outer pipe parallel connection grooves are communicated with an external circulating cold water source. The application solves the problem of poor flexibility of the multi-section double-pipe series-parallel connection switching of the existing double-pipe heat exchanger.

Description

Technical Field

[0001] This invention relates to the field of shell-and-tube heat exchanger technology, specifically a heat exchanger for cooling high-temperature fermentation broth. Background Technology

[0002] In fermentation process engineering, in order to ensure the high stability of the bioreaction system, guarantee the activity and yield of the target product, strictly control process safety, and meet the specific requirements of downstream processing units, it is necessary to cool and regulate the high-temperature fermentation broth through heat exchange equipment. This step is the core means to overcome the exothermic effect of the fermentation process, maintain the optimal metabolic environment for microorganisms, prevent the thermal degradation of products, and avoid contamination by miscellaneous bacteria. It is also one of the key technical guarantees for achieving large-scale industrial production.

[0003] The high viscosity of the fermentation broth and its inherent viscosity can easily lead to poor flow in the heat exchanger channels and pipe blockage. Therefore, when cooling the fermentation broth, a shell-and-tube heat exchanger with a wide flow channel is usually selected. Its unique large-diameter pipe design significantly reduces flow resistance and the probability of blockage, thereby ensuring the long-term continuity and stability of the heat exchange process.

[0004] Existing shell-and-tube heat exchangers have gradually revealed their shortcomings during use, mainly in the following aspects:

[0005] Multi-segment shell-and-tube heat exchangers suffer from poor flexibility in switching between series and parallel configurations, requiring disassembly and reconfiguration of the piping. Specifically, shell-and-tube heat exchangers consist of multiple segments, each composed of concentrically stacked inner and outer tubes forming two independent fluid channels. The series-to-parallel connection method for these segments must be selected based on the characteristics of the fermentation process: for temperature-sensitive processes requiring gradual heat exchange, a series connection is typically used to enhance precise temperature control and thermal efficiency; while for handling large-flow, high-viscosity, or shear-sensitive fermentation broths, a parallel connection is used to optimize flow distribution and protect the fluid. However, in existing shell-and-tube heat exchangers, the connection of multiple segments generally relies on rigid connecting components such as U-bends and flanges, necessitating disassembly and reconfiguration of the piping when switching between series and parallel modes. This process is cumbersome, time-consuming, and labor-intensive, severely impacting the practicality and adaptability of the heat exchanger.

[0006] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the present invention aims to provide a heat exchanger for cooling high-temperature fermentation broth. This heat exchanger allows for rapid switching of the connection mode between its multiple tube segments according to process requirements, enabling quick switching between series and parallel modes without disassembling and reassembling pipeline components. This significantly simplifies the switching process and greatly improves the practicality and adaptability of the heat exchanger.

[0008] To address the above problems, the present invention provides the following technical solution:

[0009] A heat exchanger for cooling high-temperature fermentation broth includes a base. Several sleeves are vertically arranged on the top of the base. Each sleeve includes an outer tube and an inner tube. Both ends of the inner tube are fixedly inserted through the outer tube. The lowest outer tube is fixedly installed, while the remaining outer tubes are vertically movable. The upper and lower outer walls of the outer tubes are respectively provided with an inlet pipe and an outlet pipe. An outer tube connection assembly for adjusting the connection mode between two adjacent outer tubes is provided. The top of the base is provided with two inner tube connection assemblies for adjusting the connection mode of the inner tubes.

[0010] The external pipe connection assembly includes a vertically movable frame, an adjusting block that slides horizontally on the inner wall of the movable frame, an external pipe series groove that runs through the top of the adjusting block, and external pipe parallel grooves that are connected to an external circulating cold water source at both the top and bottom of the adjusting block.

[0011] As an optimized solution, the inner tube connection assembly includes a horizontally sliding bracket, an adjusting plate horizontally sliding at the end of the sliding bracket, and an inner tube parallel groove and several inner tube series grooves inside the adjusting plate;

[0012] The inner tubes of the two regulating plates are arranged in an alternating pattern, and a liquid passage groove is provided through the lower end of one regulating plate and the upper end of the other regulating plate.

[0013] As an optimized solution, one of the regulating plates has two liquid inlet pipes at its lower end, which are respectively connected to the liquid passage groove and the inner tube parallel groove inside the regulating plate. The other regulating plate has two liquid outlet pipes at its upper end, which are respectively connected to the liquid passage groove and the inner tube parallel groove inside the regulating plate. Both the liquid inlet pipes and the liquid outlet pipes pass through the sliding support and avoid it.

[0014] As an optimized solution, a drive telescopic cylinder is fixedly provided at the end of the sliding bracket, and the telescopic end of the drive telescopic cylinder is fixedly connected to the adjusting plate.

[0015] As an optimized solution, two fixed supports are fixedly provided on the top of the base, and several control telescopic cylinders are fixedly provided at the ends of the fixed supports. The telescopic ends of the control telescopic cylinders are fixedly connected to the sliding supports.

[0016] As an optimized solution, fixed cylinders are provided on both sides of the movable frame, and the fixed cylinders are fixedly connected to the outer tube below them. Connecting rods are fixedly provided at opposite ends of the movable frame. The bottom end of the connecting rod extends into the fixed cylinder and is slidably connected to it. A compression spring is provided inside the fixed cylinder, and the two ends of the compression spring abut against the connecting rod and the fixed cylinder respectively.

[0017] As an optimized solution, two liquid-passing pipes are fixedly provided at the end of the adjusting block. The two liquid-passing pipes are connected to two parallel grooves of the outer pipes. The liquid-passing pipes pass through the movable frame and avoid it. The liquid-passing pipes are connected to the external circulating cold water source through a metal corrugated hose.

[0018] As an optimized solution, an adjustable telescopic cylinder is fixedly provided at the end of the movable frame, and the telescopic end of the adjustable telescopic cylinder is fixedly connected to the adjusting block.

[0019] As an optimized solution, a support frame is fixedly provided on the top of the base, and two sliding plates are fixedly fitted on the outer wall of the vertically moving outer tube. The sliding plates are slidably connected to the support frame. Two moving plates are horizontally slidably provided at the end of the support frame. Several through guide grooves are arranged vertically at the end of the moving plates. The vertical length of the guide grooves increases sequentially from bottom to top. A rotating rolling wheel is fitted on the outer wall of the vertically moving inner tube. The rolling wheel is located in the guide groove and rolls in contact with it.

[0020] As an optimized solution, a number of guide columns are fixedly provided at the end of the support frame. The guide columns pass through the movable plate and are slidably connected to it. A number of electrically controlled telescopic cylinders are fixedly provided at the end of the support frame. The telescopic ends of the electrically controlled telescopic cylinders pass through the support frame and are fixedly connected to the movable plate.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. When the heat exchanger's multi-section sleeves are connected in series, the liquid outlet and inlet pipes between two adjacent outer tubes are inserted into the outer tube series groove of the same regulating block and pressed tightly to seal. The pipe opening of the inner tube is inserted into the inner tube series groove or liquid passage groove inside the regulating plate and pressed tightly to seal. In this connection state (e.g. Figure 11As shown), all inner tubes and all outer tubes are in series. When the multi-segment sleeve is adjusted to a parallel state, the sliding support slides horizontally until the inner tube separates from the adjusting plate. The moving plate slides towards the support frame, thereby driving all movable outer tubes to slide upward until the outlet pipe and inlet pipe separate from the adjusting block. The adjusting block slides horizontally to the preset position, and the outlet pipe and inlet pipe are respectively directly opposite the two parallel slots of the outer tubes on the adjusting block. The adjusting plate slides horizontally to the preset position, and the inner tube is directly opposite the parallel slot of the inner tube on the adjusting plate. The moving plate resets, and the outlet pipe and inlet pipe between two adjacent outer tubes are respectively inserted into the two parallel slots of the outer tubes on the adjusting block and pressed tightly to seal. The sliding support resets, and the pipe opening of the inner tube is inserted into the parallel slot of the inner tube inside the adjusting plate and pressed tightly to seal. In this connection state (as shown), Figure 12 As shown), all inner tubes and all outer tubes are connected in parallel. The connection method between the multi-section tubes of this heat exchanger can be quickly switched according to process requirements, realizing the rapid switching between series and parallel modes between the multi-section tubes without disassembling and reassembling the pipeline components, which greatly simplifies the switching process and significantly improves the practicality and adaptability of the heat exchanger.

[0023] 2. The vertical length of the guide groove increases from bottom to top. The higher the outer tube, the greater its vertical movement distance. This ensures that the longitudinal movement distance required by each outer tube is met when the outlet and inlet tubes of two adjacent outer tubes are completely separated from the adjusting block.

[0024] 3. When the outlet pipe and inlet pipe are inserted into the adjusting block, the outer pipe moves downward. The outlet pipe is inserted into the adjusting block first, which drives the adjusting block and the moving frame to move downward. The compression spring is compressed until the inlet pipe is inserted into the adjusting block. When the outlet pipe and inlet pipe are separated from the adjusting block, the outer pipe moves upward. With the cooperation of the compression spring, the inlet pipe is separated from the adjusting block first until the moving frame and adjusting block are reset. The outer pipe continues to move upward until the outlet pipe is separated from the adjusting block. The vertically moving outer pipe, in cooperation with the compression spring, can realize the rapid connection and separation of the outlet pipe and inlet pipe from the adjusting block.

[0025] 4. The rolling wheels enable the inner tube to contact the guide groove through rolling friction, reducing wear on the inner tube and improving the service life of the equipment. The longitudinal section of some inlet and outlet pipes, as well as all inner tubes, is a frustum-shaped structure, which facilitates insertion into the tank. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the sleeve of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of the outer tube connection component of the present invention;

[0030] Figure 4 This is a schematic diagram of the internal structure of the adjusting block of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the end of the adjusting plate of the present invention;

[0032] Figure 6 This is a schematic diagram of the parallel groove structure of the inner tube of the present invention;

[0033] Figure 7 This is a schematic diagram of the internal tube series groove of the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of the end of the sliding bracket of the present invention;

[0035] Figure 9 This is a schematic diagram of the structure of the end of the movable frame of the present invention;

[0036] Figure 10 This is a schematic diagram of the structure of the movable plate of the present invention;

[0037] Figure 11 This is a schematic diagram illustrating the flow of different fluids when multiple sleeves are connected in series according to the present invention;

[0038] Figure 12 This is a schematic diagram illustrating the flow of different fluids when multiple sleeves are connected in parallel according to the present invention.

[0039] In the diagram: 1-Base; 2-Inner pipe connection assembly; 3-Sleeve; 4-Outer pipe connection assembly; 5-Support frame; 6-Control telescopic cylinder; 7-Fixed bracket; 8-Moving frame; 9-Outlet pipe; 10-Inner pipe; 11-Outer pipe; 12-Pipe flange; 13-Sliding plate; 14-Inlet pipe; 15-Adjusting telescopic cylinder; 16-Fixed plate; 17-Adjusting block; 18-Connecting rod; 19-Compression spring; 20-Fixed cylinder ; 21-Sealing gasket; 22-Outer tube series groove; 23-Outer tube parallel groove; 24-Metal corrugated hose; 25-Liquid inlet pipe; 26-Adjusting plate; 27-Sliding bracket; 28-Drain pipe; 29-Inner tube series groove; 30-Liquid inlet groove; 31-Liquid inlet pipe; 32-Inner tube parallel groove; 33-Drive telescopic cylinder; 34-Rolling wheel; 35-Guide column; 36-Moving plate; 37-Guide groove; 38-Electrically controlled telescopic cylinder. Detailed Implementation

[0040] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0041] like Figures 1 to 12 As shown, a heat exchanger for cooling high-temperature fermentation broth includes a base 1. Several sleeves 3 are arranged vertically on the top of the base 1. Each sleeve 3 includes an outer tube 11 and an inner tube 10 inside it. Both ends of the inner tube 10 are fixedly inserted through the outer tube 11. The lowest outer tube 11 is fixedly installed, while the remaining outer tubes 11 are vertically movable. The upper and lower outer walls of the outer tube 11 are respectively provided with an inlet pipe 14 and an outlet pipe 9. An outer tube connection component 4 for adjusting the connection mode of the outer tube 11 is provided between two adjacent outer tubes 11. Two inner tube connection components 2 for adjusting the connection mode of the inner tube 10 are provided on the top of the base 1.

[0042] The external pipe connection component 4 includes a vertically movable frame 8, an adjusting block 17 that slides horizontally on the inner wall of the movable frame 8, an external pipe series groove 22 that runs through the top of the adjusting block 17, and external pipe parallel grooves 23 that are provided at the top and bottom of the adjusting block 17. The external pipe parallel grooves 23 are connected to an external circulating cold water source.

[0043] The inner tube connection component 2 includes a horizontally sliding bracket 27, an adjustment plate 26 is horizontally sliding at the end of the sliding bracket 27, and the adjustment plate 26 has an inner tube parallel groove 32 and a number of inner tube series grooves 29 inside the adjustment plate 26.

[0044] The inner tubes 29 inside the two regulating plates 26 are arranged in an alternating manner, and the lower end of one regulating plate 26 and the upper end of the other regulating plate 26 are both provided with a liquid passage groove 30.

[0045] One of the adjusting plates 26 has two liquid inlet pipes 31 at its lower end, which are connected to the liquid passage groove 30 and the inner tube parallel groove 32 inside the adjusting plate 26, respectively. The other adjusting plate 26 has two liquid outlet pipes 28 at its upper end, which are connected to the liquid passage groove 30 and the inner tube parallel groove 32 inside the adjusting plate 26, respectively. Both the liquid inlet pipes 31 and the liquid outlet pipes 28 pass through the sliding bracket 27 and avoid it.

[0046] A drive telescopic cylinder 33 is fixedly provided at the end of the sliding bracket 27, and the telescopic end of the drive telescopic cylinder 33 is fixedly connected to the adjusting plate 26.

[0047] Two fixed brackets 7 are fixedly provided on the top of the base 1, and several control telescopic cylinders 6 are fixedly provided at the ends of the fixed brackets 7. The telescopic ends of the control telescopic cylinders 6 are fixedly connected to the sliding bracket 27.

[0048] The movable frame 8 is provided with fixed cylinders 20 on both sides. The fixed cylinders 20 are fixedly connected to the outer tube 11 below them. The opposite ends of the movable frame 8 are fixedly provided with connecting rods 18. The bottom end of the connecting rods 18 extends into the fixed cylinders 20 and is slidably connected to them. The fixed cylinders 20 are provided with compression springs 19. The two ends of the compression springs 19 abut against the connecting rods 18 and the fixed cylinders 20 respectively.

[0049] Two liquid passage pipes 25 are fixedly provided at the end of the adjusting block 17. The two liquid passage pipes 25 are connected to the two external pipe parallel grooves 23 respectively. The liquid passage pipes 25 pass through the movable frame 8 and avoid it. The liquid passage pipes 25 are connected to the external circulating cold water source through the metal corrugated hose 24.

[0050] An adjusting telescopic cylinder 15 is fixedly provided at the end of the movable frame 8, and the telescopic end of the adjusting telescopic cylinder 15 is fixedly connected to the adjusting block 17.

[0051] A support frame 5 is fixedly installed on the top of the base 1. Two sliding plates 13 are fixedly installed on the outer wall of the vertically moving outer tube 11. The sliding plates 13 are slidably connected to the support frame 5. Two moving plates 36 are horizontally slidably installed at the end of the support frame 5. Several through guide grooves 37 are arranged vertically at the end of the moving plates 36. The vertical length of the guide grooves 37 increases sequentially from bottom to top. A rotating rolling wheel 34 is installed on the outer wall of the vertically moving inner tube 10. The rolling wheel 34 is located in the guide groove 37 and rolls in contact with it.

[0052] Several guide posts 35 are fixedly provided at the end of the support frame 5. The guide posts 35 pass through the movable plate 36 and are slidably connected to it. Several electrically controlled telescopic cylinders 38 are fixedly provided at the end of the support frame 5. The telescopic ends of the electrically controlled telescopic cylinders 38 pass through the support frame 5 and are fixedly connected to the movable plate 36.

[0053] The uppermost inlet pipe 14 and the lowermost outlet pipe 9 are both equipped with pipe flanges 12. The longitudinal sections of the remaining inlet pipes 14, outlet pipes 9, and inner pipe 10 are all frustum-shaped structures. The uppermost inlet pipe 14 and the lowermost outlet pipe 9 are both connected to an external circulating cold water source.

[0054] Sealing gaskets 21 are laid inside the outer pipe series groove 22, the outer pipe parallel groove 23, the inner pipe series groove 29, the inner pipe parallel groove 32 and the liquid passage groove 30.

[0055] The bottom outer tube 11 is fixedly connected to the base 1 via a fixing plate 16.

[0056] A1 is the flow path of the fermentation broth in series mode, B1 is the flow path of the cooling water in series mode, A2 is the flow path of the fermentation broth in parallel mode, and B2 is the flow path of the cooling water in parallel mode.

[0057] The working principle of this device is as follows:

[0058] When the multi-section sleeves 3 of the heat exchanger are connected in series, the liquid outlet pipe 9 and liquid inlet pipe 14 between two adjacent outer tubes 11 are inserted into the outer tube series groove 22 of the same regulating block 17 and pressed tightly to seal. The pipe opening of the inner tube 10 is inserted into the inner tube series groove 29 or liquid passage groove 30 inside the regulating plate 26 and pressed tightly to seal. In this connection state (e.g. Figure 11 As shown), all inner tubes 10 and all outer tubes 11 are in series. When the multi-segment sleeve 3 is adjusted to a parallel state, the sliding bracket 27 slides horizontally until the inner tube 10 separates from the adjusting plate 26. The moving plate 36 slides towards the support frame 5, thereby driving all movable outer tubes 11 to slide upward until the outlet pipe 9 and inlet pipe 14 separate from the adjusting block 17. The adjusting block 17 slides horizontally to the preset position, and the outlet pipe 9 and inlet pipe 14 are respectively directly opposite the two outer tube parallel slots 23 on the adjusting block 17. The adjusting plate 26 slides horizontally to the preset position, and the inner tube 10 is directly opposite the inner tube parallel slot 32 on the adjusting plate 26. The moving plate 36 resets, and the outlet pipe 9 and inlet pipe 14 between two adjacent outer tubes 11 are respectively inserted into the two outer tube parallel slots 23 on the adjusting block 17 and pressed tightly to seal. The sliding bracket 27 resets, and the pipe opening of the inner tube 10 is inserted into the inner tube parallel slot 32 inside the adjusting plate 26 and pressed tightly to seal. In this connection state (as shown), Figure 12 As shown), all inner tubes 10 and all outer tubes 11 are in parallel mode. The connection mode between the multi-section sleeves 3 of the heat exchanger can be quickly switched according to process requirements, realizing the rapid switching between series-parallel mode between the multi-section sleeves 3 without disassembling and reassembling pipeline components, greatly simplifying the switching process and significantly improving the practicality and adaptability of the heat exchanger.

[0059] The vertical length of the guide groove 37 increases from bottom to top. The higher the outer tube 11, the greater the vertical movement distance. This allows the longitudinal movement distance required by each outer tube 11 when the outlet pipe 9 and inlet pipe 14 between two adjacent outer tubes 11 are completely separated from the adjusting block 17.

[0060] When the outlet pipe 9 and the inlet pipe 14 are inserted into the adjusting block 17, the outer pipe 11 moves downward. The outlet pipe 9 is inserted into the adjusting block 17 first, which drives the adjusting block 17 and the moving frame 8 to move downward. The compression spring 19 is compressed until the inlet pipe 14 is inserted into the adjusting block 17. When the outlet pipe 9 and the inlet pipe 14 are separated from the adjusting block 17, the outer pipe 11 moves upward. With the cooperation of the compression spring 19, the inlet pipe 14 is separated from the adjusting block 17 first until the moving frame 8 and the adjusting block 17 are reset. The outer pipe 11 continues to move upward until the outlet pipe 9 is separated from the adjusting block 17. The vertically moving outer pipe 11, in cooperation with the compression spring 19, can realize the rapid connection and separation of the outlet pipe 9 and the inlet pipe 14 from the adjusting block 17.

[0061] The rolling wheel 34 enables the inner tube 10 to contact the guide groove 37 through rolling friction, which reduces the wear of the inner tube 10 and improves the service life of the equipment. The longitudinal section of the inlet pipe 14, the outlet pipe 9, and all the inner tubes 10 are frustum-shaped structures, which facilitates insertion into the tank.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A heat exchanger for cooling high-temperature fermentation broth, characterized in that: The base (1) includes a base (1), and several sleeves (3) are arranged vertically on the top of the base (1). Each sleeve (3) includes an outer tube (11) and an inner tube (10) inside it. Both ends of the inner tube (10) are fixedly inserted through the outer tube (11). The lowest outer tube (11) is fixedly installed, and the remaining outer tubes (11) are vertically movable. The upper outer wall and lower outer wall of the outer tube (11) are respectively provided with an inlet pipe (14) and an outlet pipe (9). An outer tube connection component (4) for adjusting the connection mode of the outer tube (11) is provided between two adjacent outer tubes (11). The top of the base (1) is provided with two inner tube connection components (2) for adjusting the connection mode of the inner tube (10). The external pipe connection assembly (4) includes a vertically movable frame (8), an adjusting block (17) is horizontally slidably provided on the inner wall of the movable frame (8), an external pipe series groove (22) is provided through the top of the adjusting block (17), and external pipe parallel grooves (23) are provided at the top and bottom of the adjusting block (17), and the external pipe parallel grooves (23) are connected to an external circulating cold water source. The inner tube connecting assembly (2) includes a horizontally sliding bracket (27), and an adjusting plate (26) is horizontally sliding at the end of the sliding bracket (27). The adjusting plate (26) has an inner tube parallel groove (32) and several inner tube series grooves (29) inside. The inner tubes of the two regulating plates (26) are arranged in an alternating manner, and the lower end of one regulating plate (26) and the upper end of the other regulating plate (26) are provided with a liquid passage groove (30). The movable frame (8) is provided with fixed cylinders (20) on both sides. The fixed cylinders (20) are fixedly connected to the outer tube (11) below them. The movable frame (8) is provided with connecting rods (18) at opposite ends. The bottom end of the connecting rods (18) extends into the fixed cylinders (20) and is slidably connected to them. The fixed cylinders (20) are provided with compression springs (19). The two ends of the compression springs (19) abut against the connecting rods (18) and the fixed cylinders (20) respectively. The end of the regulating block (17) is fixed with two liquid pipes (25). The two liquid pipes (25) are connected to the two parallel grooves (23) of the outer pipes. The liquid pipes (25) pass through the movable frame (8) and avoid it. The liquid pipes (25) are connected to the external circulating cold water source through the metal corrugated hose (24). The movable frame (8) is fixedly provided with an adjusting telescopic cylinder (15) at its end, and the telescopic end of the adjusting telescopic cylinder (15) is fixedly connected to the adjusting block (17). The base (1) is fixedly provided with a support frame (5) at the top. The outer wall of the vertically moving outer tube (11) is fixedly fitted with two sliding plates (13). The sliding plates (13) are slidably connected to the support frame (5). The end of the support frame (5) is provided with two moving plates (36) that slide horizontally. The end of the moving plates (36) is provided with several through guide grooves (37) arranged vertically. The vertical length of the guide grooves (37) increases sequentially from bottom to top. The outer wall of the vertically moving inner tube (10) is fitted with a rotating rolling wheel (34). The rolling wheel (34) is located in the guide groove (37) and rolls in contact with it. The support frame (5) is fixedly provided with several guide posts (35) at its end. The guide posts (35) pass through the movable plate (36) and are slidably connected to it. The support frame (5) is fixedly provided with several electrically controlled telescopic cylinders (38) at its end. The telescopic end of the electrically controlled telescopic cylinders (38) passes through the support frame (5) and is fixedly connected to the movable plate (36).

2. The heat exchanger for cooling high-temperature fermentation broth according to claim 1, characterized in that: One of the regulating plates (26) has two liquid inlet pipes (31) at its lower end. The two liquid inlet pipes (31) are respectively connected to the liquid passage groove (30) and the inner tube parallel groove (32) inside the regulating plate (26). The other regulating plate (26) has two liquid outlet pipes (28) at its upper end. The two liquid outlet pipes (28) are respectively connected to the liquid passage groove (30) and the inner tube parallel groove (32) inside the regulating plate (26). The liquid inlet pipes (31) and the liquid outlet pipes (28) both pass through the sliding bracket (27) and avoid it.

3. The heat exchanger for cooling high-temperature fermentation broth according to claim 1, characterized in that: The sliding bracket (27) is fixedly provided with a drive telescopic cylinder (33) at its end, and the telescopic end of the drive telescopic cylinder (33) is fixedly connected to the adjusting plate (26).

4. A heat exchanger for cooling high-temperature fermentation broth according to claim 1, characterized in that: The base (1) is fixedly provided with two fixed brackets (7) at the top, and a number of control telescopic cylinders (6) are fixedly provided at the ends of the fixed brackets (7). The telescopic ends of the control telescopic cylinders (6) are fixedly connected to the sliding brackets (27).

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