An efficient and energy-saving shell-and-tube heat exchanger

Abstract

The utility model discloses a kind of high-efficiency energy-saving tube and shell heat exchangers, including shell, the inner wall of the shell is fixedly provided with several positioning plates, the positioning plate is provided with several fixed slots, the surface of the positioning plate is fixedly provided with several partition plates, the inner wall of the shell is engaged and is provided with several heat exchange pipes, the surface of the heat exchange pipe is fixedly provided with several spoiler, the both sides of the shell are fixedly provided with connecting flange, the connecting flange one side is fixedly provided with porous tube plate;Heat exchange pipe adopts oval shape, compared with conventional round tube, this unique cross-section design can reduce the resistance when fluid flows outside pipe, while enhancing fluid disturbance, effectively improve shell pass heat exchange efficiency.Hexagonal star-shaped partition plate staggered in shell, cooperate with its surface staggered and non-parallel disturbance port, so that fluid changes flow direction constantly in shell, form complex turbulent flow channel, significantly reduce heat transfer dead angle, substantially improve heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of shell-and-tube heat exchanger technology, and in particular to a high-efficiency and energy-saving shell-and-tube heat exchanger. Background Technology

[0002] In many industrial sectors such as chemical engineering, energy, and refrigeration and air conditioning, shell-and-tube heat exchangers play a crucial role as the core equipment for heat exchange. However, with the continuous expansion of industrial production scale and increasingly stringent requirements for energy efficiency, traditional heat exchangers have gradually revealed problems such as poor heat transfer efficiency, high energy consumption, and difficulty in adapting to complex operating conditions.

[0003] To overcome the shortcomings of traditional heat exchangers, this new device is designed with high-efficiency heat transfer, energy saving, compact structure, and stable reliability in mind. By optimizing the flow channel structure and fluid control methods, the heat transfer performance of the heat exchanger is enhanced while reducing fluid flow resistance and pump power consumption. Precise control of multiple fluid streams ensures efficient heat exchange under various operating conditions, thereby improving energy utilization, reducing production costs, and enhancing the adaptability and reliability of the equipment in complex industrial environments. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a highly efficient and energy-saving shell-and-tube heat exchanger.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-efficiency and energy-saving shell-and-tube heat exchanger includes a shell, a plurality of positioning plates fixedly disposed on the inner wall of the shell, a plurality of fixing grooves formed on the positioning plates, a plurality of dividing plates fixedly disposed on the surface of the positioning plates, a plurality of heat exchange tubes engaged with the inner wall of the shell, a plurality of interference vanes fixedly disposed on the surface of the heat exchange tubes, connecting flanges fixedly disposed on both sides of the shell, and a perforated tube sheet fixedly disposed on one side of the connecting flange.

[0007] As a further improvement of this utility model: the heat exchange tube is elliptical in side view, and the turbulence-distributing vanes are evenly distributed on the surface of the heat exchange tube and are cross-shaped in side view.

[0008] As a further improvement of this utility model: the side view of the fixed groove is consistent with the overall shape of the heat exchange tube and the baffle, and the side view of the distribution of the dividing plates is hexagonal star-shaped and they are arranged in an interlaced manner.

[0009] As a further improvement of this utility model: the surface of the dividing plate is provided with several interference flow ports, and the interference flow ports of adjacent dividing plates are staggered and not parallel.

[0010] As a further embodiment of this utility model: the inner side of the porous tube sheet is engaged and fixed with the heat exchange tube, and a main liquid inlet pipe is provided in the center of the porous tube sheet.

[0011] As a further improvement of this utility model: the outer side of the porous tube sheet is provided with a number of auxiliary liquid ports, the number of which corresponds to the number of heat exchange tubes.

[0012] As a further embodiment of this utility model: the surface of the porous tube sheet is provided with connecting threads, and the surface of the porous tube sheet is provided with an auxiliary feeding device, the inner side of which engages with the auxiliary liquid outlet.

[0013] As a further improvement of this utility model: the main liquid inlet pipe passes through and engages with the auxiliary liquid feeding device, and a secondary liquid inlet pipe is provided on the outside of the auxiliary liquid feeding device.

[0014] Compared with the prior art, this utility model provides a highly efficient and energy-saving shell-and-tube heat exchanger, which has the following beneficial effects:

[0015] 1. In this invention, the heat exchange tube adopts an elliptical shape. Compared with conventional circular tubes, this unique cross-sectional design reduces the resistance of fluid flow outside the tube while enhancing fluid turbulence, effectively improving the heat exchange efficiency of the shell side. The uniformly arranged cross-shaped baffles on the surface of the heat exchange tube effectively disrupt the fluid boundary layer, further enhancing the turbulence effect. The staggered hexagonal star-shaped baffles inside the shell, combined with the staggered and non-parallel baffles on their surfaces, cause the fluid to continuously change direction within the shell, forming a complex turbulent flow channel, significantly reducing heat transfer dead zones and greatly improving heat exchange efficiency.

[0016] 2. In this invention, the main inlet pipe at the center of the porous tube sheet is responsible for the input of the main fluid, and the auxiliary inlets on the outer side correspond one-to-one with the heat exchange tubes. With the aid of an auxiliary feeding device, auxiliary fluid can be introduced from the auxiliary inlet pipe and injected into the heat exchange tubes. Through this design, the flow rate and temperature of the main and auxiliary fluids can be independently adjusted, meeting the requirements for precise fluid mixing and heat exchange in different process scenarios, effectively avoiding energy loss caused by large temperature difference heat transfer, optimizing thermodynamic efficiency, and readily handling various complex operating conditions.

[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency and energy-saving shell-and-tube heat exchanger proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of a porous tube sheet structure for a high-efficiency and energy-saving shell-and-tube heat exchanger proposed in this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of the heat exchange tube of a high-efficiency and energy-saving shell-and-tube heat exchanger proposed in this utility model.

[0021] Figure 4 This is a side view sectional view of the positioning plate of a high-efficiency and energy-saving shell-and-tube heat exchanger proposed in this utility model.

[0022] Figure 5 A three-dimensional structural diagram of the positioning plate for a high-efficiency and energy-saving shell-and-tube heat exchanger proposed in this utility model.

[0023] In the diagram: 1. Shell; 2. Positioning plate; 3. Fixing groove; 4. Dividing plate; 5. Turbulence port; 6. Heat exchange tube; 7. Turbulence vane; 8. Connecting flange; 9. Perforated tube sheet; 10. Main liquid inlet pipe; 11. Auxiliary liquid inlet; 12. Connecting thread; 13. Auxiliary liquid feeding device; 14. Auxiliary liquid inlet pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Example: A high-efficiency and energy-saving shell-and-tube heat exchanger, such as Figures 1-4 As shown, the device includes a shell 1. Several positioning plates 2 are fixedly installed on the inner wall of the shell 1. Several fixing grooves 3 are opened on the positioning plates 2. Several dividing plates 4 are fixedly installed on the surface of the positioning plates 2. Several heat exchange tubes 6 are engaged with the inner wall of the shell 1. Several turbulence plates 7 are fixedly installed on the surface of the heat exchange tubes 6. Connecting flanges 8 are fixedly installed on both sides of the shell 1. A perforated tube sheet 9 is fixedly installed on one side of the connecting flanges 8. The heat exchange tubes 6 are elliptical in side view. The turbulence plates 7 are evenly distributed on the surface of the heat exchange tubes 6 and are cross-shaped in side view. The heat exchange tubes 6 are precisely engaged with the positioning plates 2 and fixing grooves 3 inside the shell 1 to ensure stable tube arrangement, reduce vibration caused by fluid impact, and improve the reliability of equipment operation. The heat exchange tubes 6 adopt an elliptical cross section, breaking the traditional circular structure, reducing fluid resistance while enhancing external fluid disturbance and optimizing shell-side heat exchange performance.

[0027] like Figures 1-4 As shown, the fixed groove 3 has the same overall shape as the heat exchange tube 6 and the baffle 7 when viewed from the side, and the partition plates 4 are distributed in a hexagonal star shape when viewed from the side, and are arranged in an interlaced manner.

[0028] The surface of the dividing plate 4 is provided with several interference ports 5. The interference ports 5 of adjacent dividing plates 4 are staggered and not parallel. The hexagonal star-shaped dividing plates 4 are staggered and, together with the staggered and non-parallel interference ports 5 on the surface, force the fluid to turn multiple times, forming a complex turbulent flow channel and reducing heat transfer dead angles.

[0029] like Figures 1-3 As shown, the inner side of the porous tube sheet is engaged and fixed with the heat exchange tube 6. A main liquid inlet pipe 10 is opened in the center of the porous tube sheet, and several auxiliary liquid ports 11 are opened on the outer side of the porous tube sheet. The number of auxiliary liquid ports 11 corresponds to the number of heat exchange tubes 6. The design of the main liquid inlet pipe 10 and auxiliary liquid ports 11 of the porous tube sheet 9 realizes the separate input of the main fluid and the auxiliary fluid, laying the foundation for the coordinated heat exchange of the main and auxiliary fluids.

[0030] like Figures 1-2 As shown, the porous tube sheet has connecting threads 12 on its surface, and an auxiliary feeding device 13 is provided on the surface threads of the porous tube sheet. The inner side of the auxiliary feeding device 13 engages with the auxiliary liquid port 11. The main liquid inlet pipe 10 passes through the auxiliary feeding device 13 and engages with it. The outer side of the auxiliary feeding device 13 has an auxiliary liquid inlet pipe 14. The auxiliary feeding device 13 is connected to the porous tube sheet 9 by threads and can independently adjust the auxiliary fluid flow rate to accurately adapt to the multi-fluid mixing heat exchange requirements under different working conditions. The overall synergistic advantages are: the design of each component works together, from flow channel optimization to precise fluid control, comprehensively improving the heat transfer efficiency of the heat exchanger, reducing energy consumption, and adapting to complex industrial application scenarios.

[0031] Working Principle: During operation, the shell-side fluid enters from one side of the shell 1. Guided by the staggered hexagonal star-shaped dividing plates 4, the fluid changes direction multiple times due to the special layout of the turbulence inlets 5, forming a strong turbulent state. Simultaneously, the cross-shaped turbulence-disrupting plates 7 on the surface of the heat exchange tubes 6 further disrupt the fluid boundary layer outside the tubes, enhancing heat transfer outside the tubes. In the tube-side, the main fluid enters through the main inlet pipe 10 and is evenly distributed to each heat exchange tube 6 through the porous tube sheet 9; the auxiliary fluid enters the auxiliary feeding device 13 through the secondary inlet pipe 14, and then is injected into the corresponding heat exchange tube 6 through the secondary inlet 11, mixing with or flowing parallel to the main fluid. The elliptical shape of the heat exchange tubes 6 also increases the fluid turbulence within the tube side, improving the tube-side heat transfer effect. Ultimately, the shell-side and tube-side fluids achieve efficient heat exchange through the heat exchange tubes 6, completing the heat transfer process.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency and energy-saving shell-and-tube heat exchanger, comprising a shell (1), characterized in that: The inner wall of the shell (1) is fixedly provided with several positioning plates (2), the positioning plates (2) are provided with several fixing grooves (3), the surface of the positioning plates (2) is fixedly provided with several dividing plates (4), the inner wall of the shell (1) is fitted with several heat exchange tubes (6), the surface of the heat exchange tubes (6) is fixedly provided with several interference flow plates (7), the two sides of the shell (1) are fixedly provided with connecting flanges (8), and a perforated tube sheet (9) is fixedly provided on one side of the connecting flange (8).

2. The high-efficiency and energy-saving shell-and-tube heat exchanger according to claim 1, characterized in that: The heat exchange tube (6) is elliptical in side view, and the baffles (7) are evenly distributed on the surface of the heat exchange tube (6) and are cross-shaped in side view.

3. The high-efficiency and energy-saving shell-and-tube heat exchanger according to claim 1, characterized in that: The fixed groove (3) has the same shape as the heat exchange tube (6) and the baffle (7) when viewed from the side. The dividing plates (4) are distributed in a hexagonal star shape when viewed from the side and are arranged in an alternating manner.

4. A high-efficiency and energy-saving shell-and-tube heat exchanger according to claim 3, characterized in that: The surface of the dividing plate (4) is provided with several interference flow ports (5), and the interference flow ports (5) of the dividing plate (4) are staggered and not parallel.

5. A high-efficiency and energy-saving shell-and-tube heat exchanger according to claim 4, characterized in that: The porous tube sheet (9) is engaged and fixed to the heat exchange tube (6) on the inner side, and a main liquid inlet pipe (10) is provided in the center of the porous tube sheet (9).

6. A high-efficiency and energy-saving shell-and-tube heat exchanger according to claim 5, characterized in that: The porous tube sheet (9) has several auxiliary liquid ports (11) on its outer side, and the number of auxiliary liquid ports (11) corresponds to the number of heat exchange tubes (6).

7. A high-efficiency and energy-saving shell-and-tube heat exchanger according to claim 6, characterized in that: The porous tube sheet (9) has a connecting thread (12) on its surface, and an auxiliary feeding device (13) is provided on the surface thread of the porous tube sheet (9). The inner side of the auxiliary feeding device (13) engages with the auxiliary liquid port (11).

8. A high-efficiency and energy-saving shell-and-tube heat exchanger according to claim 6, characterized in that: The main inlet pipe (10) passes through and engages with the auxiliary feeding device (13), and a secondary inlet pipe (14) is provided on the outside of the auxiliary feeding device (13).

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