Energy-saving heat exchanger for heat exchange device

Abstract

The application relates to the technical field of heat exchange, in particular to a jacketed heat exchanger for an energy-saving heat exchange device, which comprises a base, a plurality of supporting rods fixedly connected with the base, a top base fixedly and jointly installed at the top of the supporting rods, a jacket assembly fixedly installed on the base and a driving assembly installed on the top base; the driving assembly is connected with the jacket assembly through a connecting assembly; the driving assembly drives the jacket assembly to make reciprocating extension and contraction motion through the connecting assembly; the jacket assembly comprises an inner jacket and an outer jacket with an elliptical cross section; the laminar boundary layer is directly torn by multidimensional dynamic disturbance, the heat transfer coefficient is greatly improved, mechanical shearing force is generated by periodical pipe diameter change, scale and dead water area are effectively stripped and cleaned, static optimization of the baffle ring, the turbulent flow groove and the elliptical pipe is combined, the pump power consumption is obviously reduced, high-efficiency energy saving and long-term stable operation of dynamic and static cooperation are realized.

Description

Technical Field

[0001] This invention relates to the field of heat exchange technology, specifically to a shell-and-tube heat exchanger for an energy-saving heat exchange device. Background Technology

[0002] Shell-and-tube heat exchangers, as a compact and efficient heat exchange device, are widely used in energy, chemical, refrigeration and geothermal energy utilization fields. However, existing shell-and-tube heat exchangers still have several technical bottlenecks in practical applications. Their basic structure is that the inner and outer tubes are coaxially nested, and the two fluids flow in the inner and outer tubes respectively, exchanging heat through the tube walls. This restricts their overall energy-saving effect and service life. Traditional shell-and-tube heat exchangers mostly rely on setting static turbulence components to enhance heat transfer. Static structures are prone to creating flow dead zones, making it difficult to fundamentally solve the problem of uneven utilization of heat exchange area.

[0003] CN111595183B discloses a shell-and-tube heat exchanger, which includes a water tank body, a refrigerant assembly, and a water pipe assembly. The refrigerant assembly and the water pipe assembly are located inside the water tank body. The refrigerant assembly includes a straight refrigerant pipe and a bent refrigerant pipe, which are connected. The water pipe assembly includes a straight water pipe and a bent water pipe, which are connected. The straight water pipe is located inside the straight refrigerant pipe. The bent refrigerant pipe includes an inner refrigerant pipe and an outer refrigerant pipe, which are located between the inner and outer refrigerant pipes. The bent water pipe covers the entire inner refrigerant pipe, and the outer refrigerant pipe is wrapped around the outside of the bent water pipe.

[0004] Firstly, the aforementioned shell-and-tube heat exchanger mainly relies on static pipe arrangement to increase the heat exchange area. However, when the fluid flows inside the pipe, a laminar boundary layer is still formed. This almost static fluid layer represents the greatest thermal resistance, and it is difficult to completely destroy it using only a static structure, thus limiting further improvement in the heat transfer coefficient. Secondly, because the pipe is in a static state, impurities and calcium and magnesium ions in the water are prone to deposit and form scale on the heat exchange surface. Scale has extremely poor thermal conductivity, and once formed, it will severely reduce the heat exchange efficiency. Furthermore, the patented solution lacks an effective dynamic flushing mechanism to prevent scale adhesion. In addition, its heat exchange efficiency is greatly affected by the medium flow rate. When the flow rate fluctuates, it may not be able to maintain stable heat exchange performance, and the overall process lacks intelligent active adjustment.

[0005] Based on this, a shell-and-tube heat exchanger for an energy-saving heat exchange device is provided, which can eliminate the drawbacks of existing devices. Summary of the Invention

[0006] The purpose of this invention is to provide a shell-and-tube heat exchanger for an energy-saving heat exchange device, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a shell-and-tube heat exchanger for an energy-saving heat exchange device, comprising a base, a plurality of support rods fixedly connected to the base, and a top seat fixedly mounted on the top of the plurality of support rods, and further comprising a shell assembly fixedly mounted on the base and a drive assembly mounted on the top seat; The drive component and the sleeve component are connected by a connecting component, and the drive component drives the sleeve component to perform reciprocating telescopic motion through the connecting component; The sleeve assembly includes an inner sleeve and an outer sleeve with an elliptical cross-section. Both ends of the outer sleeve are fixedly connected to a first external connector, and both ends of the inner sleeve are fixedly connected to a second external connector via corner joints. The inner sleeve consists of two side tube walls distributed on the left and right and two elastic tube walls distributed on the top and bottom. The side tube walls are fixedly connected to the two adjacent elastic tube walls. Multiple sets of vibration mechanisms are installed between the two elastic tube walls and the outer sleeve.

[0008] The drive assembly includes two limiting slide rods and two connecting slide rods slidably mounted on the top seat. A connecting plate is fixedly installed between the two connecting slide rods and the two limiting slide rods. A motor is fixedly mounted on the top seat. A cam that cooperates with the connecting plate is fixedly installed on the drive end of the motor. The two connecting slide rods are connected to the connecting assembly. A first tension spring and a second tension spring are fixedly installed between the connecting plate and the top seat.

[0009] A metal wear-resistant plate that mates with the cam is fixedly installed at the bottom of the connecting plate.

[0010] The top seat has multiple circular holes, and each circular hole has a sliding sleeve that cooperates with the corresponding connecting slide rod or limiting slide rod.

[0011] The thickness of the first tension spring is greater than that of the second tension spring.

[0012] The connecting assembly consists of a first clamping plate and a second clamping plate. The first clamping plate and the second clamping plate clamp and lock the outer tube. The first clamping plate and the second clamping plate are fixed together by bolts. The two connecting slide rods are fixedly connected to the first clamping plate.

[0013] The vibration mechanism includes two vertical elastic arch plates, and multiple elastic arch segments symmetrically distributed vertically are fixedly installed between the two elastic arch plates.

[0014] Multiple semi-circular baffles are fixedly installed on the inner wall of the outer sleeve. The spacing between each baffle is equal, and the cross-sectional shape of each baffle is trapezoidal.

[0015] Each of the aforementioned baffle rings has multiple turbulence grooves to generate turbulence.

[0016] The outer tube and side tube walls are made of highly elastic metal material and have high corrosion resistance.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes a motor-driven cam to drive the outer sleeve to perform axial extension and contraction vibration, and uses the time delay between the inner and outer sleeves to excite the elastic arch plate inside the inner sleeve to produce horizontal vibration and the elastic arch plate to produce vertical vibration. The multi-dimensional mechanical disturbances superimposed on each other can directly tear and destroy the static laminar boundary layer formed by the fluid at the pipe wall, forcing the fluid to transform into violent turbulence, fundamentally and greatly improving the convective heat transfer coefficient, and the heat dissipation efficiency is far higher than that of static structures.

[0018] 2. This invention utilizes the compression and pulling of the inner sleeve by the elastic arch plate to drive the elastic tube wall to undergo periodic outward or inward deformation, causing frequent changes in the flow cross-sectional area inside the tube, forming a piston-like push-pull effect. The change in tube diameter not only effectively cleans up stagnant water areas, but more importantly, the continuous mechanical shearing force generated by the dynamic deformation can directly peel off and inhibit the adhesion and growth of scale on the tube wall surface, greatly reducing the thermal resistance caused by scale buildup, thereby ensuring that the equipment maintains efficient heat exchange even under long-term high-load operation.

[0019] 3. This invention perfectly combines dynamic vibration technology with static structural optimization. The baffle ring and turbulence channel inside the outer tube force the water flow to generate spiral motion, breaking the boundary layer in advance. Combined with the outer tube with an elliptical cross-section design, it effectively reduces the frictional resistance of the fluid and the pump power consumption, and enhances the self-cleaning ability. The composite mechanism of static pre-disturbance + dynamic strong disturbance ensures ultra-high heat exchange efficiency while significantly reducing operating energy consumption and maintenance costs, achieving true energy saving and environmental protection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 for Figure 1 A schematic diagram of the structure after rotation at a certain angle.

[0022] Figure 3 for Figure 2 A schematic diagram of the planar structure along one of the angles.

[0023] Figure 4 for Figure 2 A schematic diagram of the structure after removing the sleeve assembly and rotating it at a certain angle.

[0024] Figure 5 for Figure 4 A magnified structural diagram of the connecting component.

[0025] Figure 6 for Figure 1 An enlarged structural diagram of the drive component after it has rotated a certain angle.

[0026] Figure 7 for Figure 1 Enlarged structural diagram of the middle sleeve assembly.

[0027] Figure 8 for Figure 7 A schematic diagram of the structure after removing the upper first external connector and the inspection port.

[0028] Figure 9 for Figure 8 A schematic diagram of the planar structure along one of the angles.

[0029] Figure 10 for Figure 8 A schematic diagram of the structure after cutting open the upper section of the outer sleeve.

[0030] Figure 11 for Figure 10 A schematic diagram of the structure after removing the corner joint.

[0031] Figure 12 for Figure 11 An enlarged structural diagram showing a section of the outer sleeve and the inner sleeve cut out from the middle.

[0032] Figure 13 for Figure 12 A schematic diagram of the planar structure along one of the angles.

[0033] Figure 14 for Figure 12 A magnified schematic diagram of the intermediate baffle ring.

[0034] Figure 15 for Figure 11 A schematic diagram of the structure after cutting out a section of the inner sleeve and multiple sets of vibration mechanisms that cooperate with the inner sleeve.

[0035] Figure 16 for Figure 15 An enlarged schematic diagram of one of the vibration mechanisms.

[0036] In the diagram: 1. Base; 2. Support rod; 3. Top seat; 4. Sleeve assembly; 5. Drive assembly; 6. Connecting assembly; 7. First clamping plate; 8. Second clamping plate; 9. Motor; 10. Cam; 11. Connecting plate; 12. Connecting slide rod; 13. Limiting slide rod; 14. First tension spring; 15. Outer sleeve; 16. First external connector; 17. Inspection port; 18. Second external connector; 19. Corner joint; 20. Inner sleeve; 21. Side tube wall; 22. Baffle ring; 23. Elastic tube wall; 24. Vibration mechanism; 25. Turbulence channel; 26. Elastic bow plate; 27. Elastic bow sheet; 28. Second tension spring. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0038] Example 1, Reference Figures 1-12 , Figure 14 A shell-and-tube heat exchanger for an energy-saving heat exchange device includes a base 1, a plurality of support rods 2 fixedly connected to the base 1, and a top seat 3 fixedly installed on the top of the plurality of support rods 2. It also includes a shell assembly 4 fixedly installed on the base 1 and a drive assembly 5 installed on the top seat 3. Select support rods of different lengths as needed to ensure that the drive assembly 5 and the top seat are completely separated from the material being heat-exchanged.

[0039] The drive assembly 5 and the sleeve assembly 4 are connected by the connecting assembly 6. The drive assembly 5 drives the sleeve assembly 4 to perform reciprocating telescopic motion through the connecting assembly 6. The sleeve assembly 4 includes an inner sleeve 20 and an outer sleeve 15 with an elliptical cross-section. Both ends of the outer sleeve 15 are fixedly connected to a first external connector 16. Both ends of the inner sleeve 20 are fixedly connected to a second external connector 18 through a corner joint 19. An inspection port 17 is fixedly connected to the first external connector 16 for observing the flow status of the cooling water in the external connector 16 and performing venting operation in time when air bubbles appear. The drive assembly 5 includes two limiting slide rods 13 and two connecting slide rods 12 that are slidably mounted on the top seat 3. A connecting plate 11 is fixedly mounted between the two connecting slide rods 12 and the two limiting slide rods 13. A motor 9 is fixedly mounted on the top seat 3. A cam 10 that cooperates with the connecting plate 11 is fixedly mounted on the drive end of the motor 9. The two connecting slide rods 12 are connected to the connecting assembly 6. A first tension spring 14 and a second tension spring 28 are fixedly mounted between the connecting plate 11 and the top seat 3. The rotation of motor 9 drives cam 10 to rotate. The eccentric contour of cam 10 periodically presses against the wear-resistant plate at the bottom of connecting plate 11, causing connecting plate 11 to rise. Then, the distal end of cam 10 rotates, and connecting plate 11 quickly falls back under the tension of the first tension spring 14 and the second tension spring 28, thus forming a high-frequency up-and-down reciprocating motion. The high-speed rotation of motor 9 is cleverly converted into linear high-frequency linear vibration. A metal wear-resistant plate that mates with the cam 10 is fixedly installed at the bottom of the connecting plate 11. The wear-resistant plate is designed to prevent the cam 10 from directly wearing down the connecting plate 11, thus extending its service life. The kinetic energy is transferred to the sleeve assembly 4 by connecting the slide bar 12, which causes the spiral tube to expand and contract. The energy consumption is extremely low, but it can generate high-frequency and controllable mechanical vibration, which solves the problem of high energy consumption caused by relying on a high-power water pump to forcibly increase the flow rate to destroy the boundary layer.

[0040] The top seat 3 has multiple circular holes, each containing a fixed sleeve that mates with the corresponding connecting slide rod 12 or limiting slide rod 13. The sleeve on the top seat 3 acts as a guide bearing, providing a linear guide channel for the connecting slide rod 12 and the limiting slide rod 13. Its design strictly limits the freedom of movement of the slide rods, ensuring they can only move vertically up and down, preventing bending and deformation due to eccentric forces. Simultaneously, the tight fit between the sleeve and the connecting slide rod 12 and the limiting slide rod 13 also serves as a guide and dustproof mechanism, preventing external impurities from entering. This ensures smooth and accurate power transmission, significantly reducing the occurrence of mechanical jamming and solving the technical problem of mechanism failure caused by violent swinging or deflection of the transmission rod under flexible vibration conditions.

[0041] The first tension spring 14 is thicker than the second tension spring 28. The thicker first tension spring 14 provides a strong primary restoring force, while the thinner second tension spring 28 provides auxiliary weak balancing and damping forces. This differentiated design breaks the single symmetrical restoring force and eliminates linear resonance points. Furthermore, since the lower end of the connecting slide rod 12 is connected to the outer sleeve 15, the stretching of the outer sleeve 15 exerts a downward pulling force on the connecting slide rod 12. Therefore, the downward pressure on the connecting slide rod 12 is not only due to the tension of the second tension spring 28 but also the deformation elastic force of the outer sleeve 15. If the elastic forces of the first tension spring 14 and the second tension spring 28 were the same, an uneven downward pressure load would occur on the connecting plate 11, inevitably causing the connecting plate 11 to tilt. The uneven wear, jamming, or even bending of the connecting slide rod 12, the limiting slide rod 13, and the sliding sleeve can be eliminated by artificially introducing asymmetrical elastic stiffness to maintain the horizontal linear movement of the connecting plate 11. The combination of the thick first tension spring 14 near the limiting end and the thin second tension spring 28 near the power transmission end can accurately balance the additional tension of the outer sleeve 15 by utilizing the strong restoring force of the thick first tension spring 14, preventing the connecting plate 11 from shifting downward pressure. This effectively eliminates the mechanical wear of the transmission pair, greatly reduces system resonance and noise under high-frequency vibration, ensures the smoothness and accuracy of power transmission, and significantly improves the fatigue strength and overall service life of the transmission mechanism under extreme stress conditions. Under the high-frequency drive of the cam 10, the violent disturbance of the fluid will generate a reaction force. Through the combination of a strong and a weak first tension spring 14 and a second tension spring 28, the impact energy brought by the high-frequency vibration can be effectively absorbed, making the return action of the connecting plate 11 more crisp and powerful, and able to smoothly adapt to the resistance changes under different fluid loads. This solves the technical problem that a single spring is prone to system resonance at a specific frequency, which can lead to mechanical fatigue fracture or excessive noise.

[0042] The connecting assembly 6 consists of a first clamping plate 7 and a second clamping plate 8. The first clamping plate 7 and the second clamping plate 8 clamp and lock the outer sleeve 15. The first clamping plate 7 and the second clamping plate 8 are fixed together by bolts. The two connecting slide rods 12 are fixedly connected to the first clamping plate 7. The first clamping plate 7 and the second clamping plate 8 form a clamp-like structure that tightly clamps the spiral outer tube 15. Its design function is to use friction to lock the outer tube 15 in a specific position, so that when the connecting slide rod 12 pulls the first clamping plate 7 up and down, the entire spiral tube is forcibly pushed. Due to the adoption of a split clamping design, it is easy to adjust the clamping preload, ensuring absolute synchronization of power transmission and avoiding ineffective expansion and contraction due to slippage. At the same time, this modular clamping structure facilitates on-site installation and disassembly, solving the technical problem in the existing technology where the heat exchanger pipeline and power source are connected by welding, resulting in local stress concentration and inflexible disassembly and maintenance.

[0043] Multiple semi-circular baffle rings 22 are fixedly installed on the inner wall of the outer tube 15. The spacing between each baffle ring 22 is equal, and the cross-sectional shape of each baffle ring 22 is trapezoidal. The baffle rings 22 are designed as semi-circles and are evenly distributed in an alternating pattern. They use physical obstruction to forcibly change the direction of water flow, forcing the water flow to bypass the baffle rings. The trapezoidal cross-section design makes the force-bearing area gradually decrease when the water flow hits the baffle rings, generating a strong local acceleration effect, which in turn generates strong turbulence. This greatly increases the degree of water flow disturbance, allowing heat to be conducted from the inner tube wall to the main body of the water flow with extremely high efficiency. This effectively solves the problem that the water flow inside the casing is prone to forming a wall-hugging flow and cannot efficiently remove heat. At the same time, the uniform spacing ensures efficient utilization of the entire length of the heat exchange tube and avoids local heat accumulation.

[0044] Each baffle ring 22 has multiple turbulence grooves 25 to generate turbulence. The turbulence grooves 25 are recessed into the surface of the baffle ring 22. When the water flows at a high speed and impacts the baffle ring 22, the water will be diverted into these tiny turbulence grooves 25. The flow velocity of the water in the turbulence grooves 25 is extremely fast, and due to the friction of the groove walls, a large number of tiny vortices will be generated in the turbulence grooves 25. Its function is to act as a secondary turbulence generator, which, on the basis of the flow passing through the baffle ring 22, adds micro-scale turbulence disturbance, which greatly improves the local convective heat transfer coefficient. Especially for liquids with high viscosity, it can effectively prevent the boundary layer dead zone from being re-established, and solve the technical problem that high viscosity fluids are prone to re-form laminar flow after the baffle, resulting in a decrease in the overall heat transfer effect.

[0045] Example 2 differs from Example 1 in that: (Refer to...) Figures 10-13 , Figures 15-16 The inner sleeve 20 is composed of two side tube walls 21 distributed on the left and right and two elastic tube walls 23 distributed on the top and bottom. The side tube walls 21 are fixedly connected to the two adjacent elastic tube walls 23. Multiple sets of vibration mechanisms 24 are installed between the two elastic tube walls 23 and the outer sleeve 15. The inner sleeve 20 differs from the traditional rigid round tube in that it adopts a combination design of side rigidity and top flexibility. The side tube walls 21 on the left and right sides are responsible for providing the main support rigidity, while the elastic tube walls 23 in the vertical direction have excellent deformation capacity. The purpose of this structure design is to provide a physical basis for the internal coolant flow channel to actively change the cross-sectional area. When subjected to external force, the upper and lower elastic tube walls 23 can deform outward or inward, achieving dynamic diameter change of the flow channel without damaging the overall sealing of the inner sleeve 20. This forces the coolant to undergo periodic volume compression and expansion inside, similar to artificially creating a breathing effect for the fluid, thereby greatly enhancing the heat exchange efficiency inside the fluid and between the fluid and the tube wall, and solving the technical bottleneck that rigid inner tubes cannot dynamically adjust the local fluid disturbance state.

[0046] The vibration mechanism 24 includes two vertical elastic arch plates 26, and a plurality of elastic arch pieces 27 symmetrically distributed vertically are fixedly installed between the two elastic arch plates 26. The vibration mechanism 24 acts as a bridge linking the inner and outer layers. Two elastic arch plates 26 are vertically arranged, with their ends acting on the upper and lower elastic tube walls 23 of the inner sleeve 20, respectively. When the outer sleeve 15 mechanically expands or contracts, the relative displacement between the outer sleeve 15 and the inner sleeve 20 is caused by the movement delay. The elastic arch plate 26 is the first to be stressed and deformed, which in turn causes the elastic bow plate 27 to deform. The deformation of the elastic arch plate 26 causes the fluid to generate violent horizontal agitation, while the vibration of the elastic bow plate 27 causes the fluid to generate violent vertical agitation. This transforms the single axial vibration of the outer sleeve 15 into a multi-dimensional composite disturbance. The multi-directional composite vibration can more thoroughly destroy the static boundary layer formed by the fluid at the tube wall, significantly improving the convective heat transfer coefficient. At the same time, this elastic linkage mechanism does not require an additional power source and is a purely mechanical passive response. It solves the technical problem that single axial vibration cannot effectively disturb the fluid center layer, resulting in the existence of heat exchange dead zones and a sharp increase in energy consumption with pumping pressure.

[0047] The outer tube 15 and the side tube wall 21 are both made of highly elastic metal material and have high corrosion resistance. The outer tube 15 and the side tube wall 21 are made of highly elastic and corrosion-resistant special alloy material (such as titanium alloy or stainless steel spring steel), which can adapt to the harsh working conditions of high frequency expansion and contraction vibration and periodic deformation of the inner tube wall. High elasticity ensures that the outer tube 15 will not experience fatigue fracture or plastic deformation during repeated spring-like expansion and contraction, and will always maintain good recovery ability; corrosion resistance ensures that it is not prone to rust and scale formation under the dual chemical corrosion of water flow and refrigerant. It greatly extends the service life of the equipment in harsh heat exchange environments and solves the technical problem that traditional heat exchangers are prone to metal pipe wall cracking and leakage due to material fatigue and corrosion after the introduction of mechanical vibration to enhance heat transfer, which could lead to major safety accidents.

[0048] The specific operating steps of this device are as follows: Select the first external inlet 16 for water inlet / outlet (flow from top to bottom or bottom to top) according to the requirements, and then introduce coolant through the second external inlet 18 (also select the second external inlet 18, coolant flows from top to bottom or bottom to top). When the cooling water flows inside the outer sleeve 15, it will be blocked by the baffle ring 22, and the water flow will be forced to generate rotation and spiral motion. This forced rotation makes the water flow fully mixed, completely breaking the static boundary layer. The violent disturbance of the water flow makes the heat transfer from the pipe wall to the main body of the water flow extremely efficient, and under the action of the turbulence channel 25, the cooling water generates stronger turbulence, further improving the heat dissipation efficiency. The outer casing 15 adopts an elliptical design. The irregular shape of the elliptical outer casing 15 will cause the water flow to generate secondary eddies in the cross section. These eddies not only disrupt the boundary layer, but also make the direction of the velocity field and the temperature field more consistent, thereby greatly improving the heat transfer efficiency. The elliptical outer casing 15 reduces the water flow inertia under the same flow area through its flattened design, thus significantly reducing fluid friction and deformation resistance, and reducing the operating cost of the entire system. The major and minor axis characteristics of the elliptical outer casing 15 make it easier for the water flow to flush away the attached substances. Combined with the high flow velocity, it can effectively inhibit the growth of scale on the pipe wall. Structurally, the streamlined elliptical cross section has a more uniform stress distribution when subjected to internal pressure, which can prevent the pipe wall from being deformed and damaged due to excessive pressure. During the heat exchange process, the motor 9 is started. The cam 10 at the drive end of the motor 9 rotates and presses against the connecting plate 11, causing the connecting plate 11 to move upward. Under the combined action of the first tension spring 14 and the second tension spring 28, the connecting plate 11 moves up and down reciprocally. The connecting plate 11 drives the outer sleeve 15 to move up and down through the connecting slide rod 12 and the connecting assembly 6. Since the outer sleeve 15 is spiral, it will perform a spring-like extension and retraction motion. At this time, the outer sleeve 15 will vibrate up and down. When the spiral outer sleeve 15 extends and retracts up and down, the tube wall will generate a strong shearing and scraping effect on the coolant that is in close contact, directly tearing and destroying this static boundary layer, causing the coolant to quickly become turbulent near the tube wall, which greatly improves the convective heat transfer coefficient. Because there is a movement delay between the inner sleeve 20 and the outer sleeve 15, the inner sleeve 20 will have a relative displacement with the outer sleeve 15, causing the elastic bow plate 26 to deform. The elastic bow plate 26 will in turn cause the elastic bow piece 27 to deform. Thus, the deformation of the elastic bow plate 26 will produce horizontal vibration, and the elastic bow piece 27 will produce vertical vibration. The vibration will agitate the surrounding fluid extremely violently, directly destroying the laminar boundary layer near the pipe wall, greatly improving the convective heat transfer coefficient, and allowing heat to be transferred from the pipe wall to the center of the fluid more quickly. Due to the tension and compression of the elastic arch plate 26, the elastic tube wall 23 will deform (bulge outward or concave inward). The forces on the upper and lower elastic tube walls 23 are in different directions (when the upper elastic tube wall 23 is concave, the lower elastic tube wall 23 is bulging outward). Because of the different deformation directions, the internal space of the inner sleeve 20 will change frequently and periodically, which will also cause the internal space of the outer sleeve 15 to change. This periodic change in tube diameter is like an invisible piston inside the pipe pushing and pulling the fluid back and forth, which completely destroys the laminar boundary layer that is close to the tube wall and can effectively improve the heat exchange efficiency.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shell-and-tube heat exchanger for an energy-saving heat exchange device, comprising a base (1), a plurality of support rods (2) fixedly connected to the base (1), and a top seat (3) fixedly mounted on the top of the plurality of support rods (2), characterized in that: It also includes a sleeve assembly (4) fixedly mounted on the base (1) and a drive assembly (5) mounted on the top seat (3); The drive component (5) and the sleeve component (4) are connected by a connecting component (6), and the drive component (5) drives the sleeve component (4) to perform reciprocating telescopic motion through the connecting component (6); The sleeve assembly (4) includes an inner sleeve (20) and an outer sleeve (15) with an elliptical cross-section. Both ends of the outer sleeve (15) are fixedly connected to a first external connector (16), and both ends of the inner sleeve (20) are fixedly connected to a second external connector (18) through a corner joint (19). The inner sleeve (20) consists of two side tube walls (21) distributed on the left and right and two elastic tube walls (23) distributed on the top and bottom. The side tube walls (21) are fixedly connected to the two adjacent elastic tube walls (23). Multiple sets of vibration mechanisms (24) are installed between the two elastic tube walls (23) and the outer sleeve (15).

2. The shell-and-tube heat exchanger for the energy-saving heat exchange device according to claim 1, characterized in that: The drive assembly (5) includes two limiting slide rods (13) and two connecting slide rods (12) slidably mounted on the top seat (3). A connecting plate (11) is fixedly mounted between the two connecting slide rods (12) and the two limiting slide rods (13). A motor (9) is fixedly mounted on the top seat (3). A cam (10) that cooperates with the connecting plate (11) is fixedly mounted on the drive end of the motor (9). The two connecting slide rods (12) are connected to the connecting assembly (6). A first tension spring (14) and a second tension spring (28) are fixedly mounted between the connecting plate (11) and the top seat (3).

3. The shell-and-tube heat exchanger for the energy-saving heat exchange device according to claim 2, characterized in that: The bottom of the connecting plate (11) is fixedly installed with a metal wear-resistant plate that cooperates with the cam (10).

4. The shell-and-tube heat exchanger for the energy-saving heat exchange device according to claim 2, characterized in that: The top seat (3) has multiple round holes, and each round hole has a fixed sleeve that cooperates with the corresponding connecting slide rod (12) or limiting slide rod (13).

5. The shell-and-tube heat exchanger for the energy-saving heat exchange device according to claim 2, characterized in that: The thickness of the first tension spring (14) is greater than that of the second tension spring (28).

6. The shell-and-tube heat exchanger for the energy-saving heat exchange device according to claim 2, characterized in that: The connecting assembly (6) consists of a first clamping plate (7) and a second clamping plate (8). The first clamping plate (7) and the second clamping plate (8) clamp and lock the outer tube (15). The first clamping plate (7) and the second clamping plate (8) are fixed together by bolts. The two connecting slide rods (12) are fixedly connected to the first clamping plate (7).

7. The shell-and-tube heat exchanger for the energy-saving heat exchange device according to claim 1, characterized in that: The vibration mechanism (24) includes two vertical elastic arch plates (26), and a plurality of elastic arch pieces (27) symmetrically distributed vertically are fixedly installed between the two elastic arch plates (26).

8. The shell-and-tube heat exchanger for the energy-saving heat exchange device according to claim 1, characterized in that: Multiple semi-circular baffle rings (22) are fixedly installed on the inner wall of the outer tube (15). The spacing between each baffle ring (22) is equal, and the cross-sectional shape of each baffle ring (22) is trapezoidal.

9. The shell-and-tube heat exchanger for the energy-saving heat exchange device according to claim 8, characterized in that: Each of the baffle rings (22) has multiple turbulence grooves (25) for generating turbulence.

10. The shell-and-tube heat exchanger for the energy-saving heat exchange device according to claim 8, characterized in that: The outer tube (15) and the side tube wall (21) are both made of highly elastic metal material and have high corrosion resistance.

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