Efficient tubular heat exchanger

Abstract

The utility model discloses an efficient tube type heat exchanger which comprises a fixing frame, the inner walls of the two sides of the fixing frame are both connected with shells in a sliding mode, the two shells are mutually fixed, the two shells are both fixedly connected with a plurality of second baffles, a plurality of branch pipes penetrating through the second baffles are fixedly connected between the second baffles, and the branch pipes penetrate through the second baffles. The top of the shell is fixedly connected with a plurality of connecting pipes communicated with the shell, and the connecting pipes are located at the top of the second baffle, so that the retention time of high-temperature gas in the heat exchanger can be remarkably prolonged through the matched use of the first baffle and the power assembly, and the heat exchanger can be conveniently and rapidly disassembled by designing the two shells. The two shells participate in the heat exchange process at the same time, the heat exchange efficiency is greatly improved, and the heights of the two shells can be flexibly adjusted through the power assembly.

Description

A high-efficiency shell-and-tube heat exchanger Technical Field

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

[0002] Shell and tube heat exchangers are a type of heat exchange equipment widely used in various fields such as chemical, petroleum, and heating. They effectively transfer heat between different fluids through the principle of heat conduction.

[0003] When the existing high-temperature gas enters the heat exchanger, it undergoes heat exchange and is then directly discharged. Since heat exchange takes a certain amount of time, the heat in the high-temperature gas is not fully utilized, resulting in the heat exchanger's heat exchange efficiency not being fully utilized and thus leading to low heat exchange efficiency. Summary of the Invention

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

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

[0006] A high-efficiency shell-and-tube heat exchanger includes a fixed frame, with shells slidably connected to the inner walls of both sides of the fixed frame, and the two shells being fixedly connected to each other. Multiple second baffles are fixedly connected to each of the two shells, and multiple branch pipes penetrating the second baffles are fixedly connected between the multiple second baffles. Multiple connecting pipes communicating with the shells are fixedly connected to the top of each shell, and the connecting pipes are located on top of the second baffles. A first baffle is slidably connected to one side of each of the multiple connecting pipes. Two connecting plates are fixedly connected to the multiple first baffles on one side of one shell and the multiple first baffles on the other side of the other shell. A power assembly is provided at the top of each of the two shells to drive the two connecting plates to move towards each other. Two gas pipes, communicating with and symmetrically arranged on the top of each of the two shells, are fixedly connected to the top of each of the two shells. Connecting assemblies connecting the two shells are provided on both sides of each of the two shells. A drive assembly for adjusting the height of the two shells is provided at the bottom of the fixed frame.

[0007] As a further embodiment of this utility model, the power assembly includes two fixed plates fixedly connected to the top of two housings, and a threaded rod threadedly connected to the two connecting plates is rotatably connected between the two fixed plates via a bearing. A servo motor that drives the threaded rod to rotate axially is fixedly connected to one side of one of the fixed plates.

[0008] As a further embodiment of this utility model, guide frames are fixedly connected to the tops of the two housings, and the guide frames are slidably connected to the two connecting plates.

[0009] As a further embodiment of this utility model, the connecting assembly includes two flow guide shells respectively fixedly connected to one side of the two housings, and a liquid pipe connected to the two flow guide shells is fixedly connected to one side of the two flow guide shells.

[0010] As a further embodiment of this utility model, the drive assembly includes a cylinder fixedly connected to the bottom of the fixed frame, and the piston end of the cylinder passes through the fixed frame and is fixed to the two housings.

[0011] As a further improvement of this utility model, each of the two housings has multiple sliding grooves on one side that are slidably connected to the fixing frame.

[0012] As a further embodiment of this utility model, multiple grooves are provided on one side of both housings, and two connecting frames are fixedly connected to both sides of the fixing frame. Two positioning columns are slidably connected inside the connecting frame. One end of the two positioning columns is fixedly connected to a protrusion that inserts into the groove, and one side of the protrusion is rotatably connected to a threaded rod that is threadedly connected to the connecting frame via a bearing.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. By using the first baffle in conjunction with the power component, this utility model significantly extends the residence time of high-temperature gas in the heat exchanger, so that the heat in the high-temperature gas can be utilized to the maximum extent.

[0015] 2. By designing two shells, this utility model enables both to participate in the heat exchange process simultaneously, which greatly improves the efficiency of heat exchange.

[0016] 3. This utility model can flexibly adjust the height of the two housings through the power component, which makes it easy for operators to connect the two air pipes and two liquid pipes to the external pipeline, greatly simplifying the installation and connection process. Attached Figure Description

[0017] Figure 1 is a three-dimensional structural diagram of a high-efficiency shell-and-tube heat exchanger proposed in this utility model;

[0018] Figure 2 is an enlarged structural diagram of section A of a high-efficiency shell-and-tube heat exchanger proposed in this utility model;

[0019] Figure 3 is a schematic cross-sectional view of the connecting pipe structure of a high-efficiency shell-and-tube heat exchanger proposed in this utility model.

[0020] Figure 4 is a schematic cross-sectional view of the shell structure of a high-efficiency shell-and-tube heat exchanger proposed in this utility model.

[0021] In the diagram: 1. Connecting pipe; 2. Air pipe; 3. Housing; 4. Slide groove; 5. Fixing frame; 6. Cylinder; 7. Liquid pipe; 8. Guide shell; 9. Groove; 10. Protrusion; 11. Connecting frame; 12. Lead screw; 13. First baffle; 14. Threaded rod; 15. Connecting plate; 16. Fixing plate; 17. Guide rod; 18. Second baffle; 19. Branch pipe; 20. Positioning post. Detailed Implementation

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Therefore, all other embodiments of this application described herein, and all embodiments obtained by those skilled in the art without creative effort based on the embodiments in this application, should fall within the scope of protection of this application.

[0023] Referring to Figures 1-4, a high-efficiency shell-and-tube heat exchanger includes a fixed frame 5. The inner walls of both sides of the fixed frame 5 are slidably connected to a shell 3, and the two shells 3 are fixed to each other. The inner walls of the two shells 3 are each fixed with multiple second baffles 18 by bolts. Multiple branch pipes 19 that penetrate the second baffles 18 are welded between the multiple second baffles 18.

[0024] In this invention, both sides of the two housings 3 are provided with connecting components that connect the two housings 3. The connecting components include two guide shells 8 that are respectively fixed to one side of the two housings 3 by bolts. One side of the two guide shells 8 is welded with a liquid pipe 7 that is connected to the two guide shells 8. Cooling liquid enters into one of the two guide shells 8 from one of the liquid pipes 7. The cooling liquid in the two guide shells 8 then enters into multiple branch pipes 19, thus conveniently adding cooling liquid into multiple branch pipes 19 in the two housings 3 at the same time. At the same time, the cooling liquid in the multiple branch pipes 19 enters into the other two guide shells 8. The cooling liquid in the other two guide shells 8 then exits from the other liquid pipe 7, thus conveniently exiting the cooling liquid into the multiple branch pipes 19 in the two housings 3.

[0025] Multiple connecting pipes 1 are welded to the top of the housing 3 and are connected to the housing 3. The connecting pipes 1 are located on the top of the second baffle 18. The first baffle 13 is slidably connected to one side of each of the multiple connecting pipes 1. The same connecting plate 15 is fixed between the multiple first baffles 13 located on the same side by bolts. The top of the two housings 3 is provided with a power assembly that drives the two connecting plates 15 to move.

[0026] The power assembly includes two fixed plates 16 bolted to the top of the two housings 3. A threaded rod 14 threaded to the two connecting plates 15 is rotatably connected between the two fixed plates 16 via a bearing. A servo motor that drives the threaded rod 14 to rotate axially is bolted to one side of one of the fixed plates 16. When the servo motor is started, the output shaft of the servo motor drives the threaded rod 14 to rotate, and the threaded rod 14 drives the two connecting plates 15 to move, thereby controlling the working state of the first baffle 13.

[0027] Two gas pipes 2, which are connected to and symmetrically arranged, are fixed to the top of the two housings 3 by bolts. High-temperature gas is injected into the two housings 3 through one of the gas pipes 2, thereby splitting a stream of high-temperature gas into two streams. Since the housing 3 is equipped with a second baffle 18, it cannot directly contact the walls of all the branch pipes 19. Therefore, the high-temperature gas will flow along the connecting pipe 1.

[0028] During operation, the coolant is drawn from the coolant storage tank using equipment such as a circulating pump and added to multiple branch pipes 19 inside the housing 3 through the connecting component on one side of the liquid pipe 7. The coolant is then discharged from the connecting component on the other side and returns to the coolant storage tank.

[0029] Simultaneously, the power assembly is activated, and the motor rotates forward, driving both connecting plates 15 to move to the right. This causes multiple first baffles 13 on one of the connecting plates 15 to disengage from the inner wall of the connecting pipe 1, allowing the high-temperature gas to flow between the connected connecting pipes 1. During this process, the high-temperature gas will briefly come into contact with the walls of multiple branch pipes 19 and quickly exit from another gas pipe 2. The gas temperature drops relatively little. At the same time, multiple first baffles 13 on the other connecting plate 15 come into contact with the inner wall of the connecting pipe 1, causing the high-temperature gas to stop flowing between the closed connecting pipes 1. The stopped high-temperature gas cannot be quickly discharged and eventually comes into contact with the wall of the branch pipe 19 for a long time, continuously exchanging heat with the cooling liquid inside, resulting in a greater drop in gas temperature.

[0030] Next, the coolant located in the two shells 3 returned to the coolant storage tank. However, due to the different heat exchange rates of the two coolants, there was a temperature difference in the coolant temperature. After mixing, the overall temperature of the coolant was reduced, and the heat dissipation efficiency of the coolant was accelerated.

[0031] Then the power unit is started, the motor reverses, and drives the two connecting plates 15 to move to the left at the same time. The originally connected connecting pipe 1 is closed, and the originally closed connecting pipe 1 is connected. The high temperature gas flows inside according to the above principle. Finally, the two high temperature gases leave the gas pipe 2 with a temperature difference, which has a cooling effect. The high temperature gas leaving the gas pipe 2 will enter the next heat exchanger and continue the above process. This process is repeated, which greatly improves the efficiency of heat exchange.

[0032] In this utility model, the tops of the two housings 3 are fixed with guide frames 17 by bolts, and the guide frames 17 are slidably connected to the two connecting plates 15. The guide frames 17 prevent the connecting plates 15 from shifting during the sliding process, making the sliding of the connecting plates 15 smoother.

[0033] In this utility model, the bottom of the fixing frame 5 is provided with a driving assembly for adjusting the height of the two housings 3. The driving assembly includes a cylinder 6 fixed to the bottom of the fixing frame 5 by bolts, and the piston end of the cylinder 6 passes through the fixing frame 5 and is fixed to the two housings 3. Each side of the two housings 3 is provided with multiple sliding grooves 4 that are slidably connected to the fixing frame 5. The sliding grooves 4 improve the sliding stability of the two housings 3. When the cylinder 6 is activated, the cylinder 6 drives the two housings 3 to move upward, thereby realizing the height adjustment of the two housings 3, which facilitates the connection of the two air pipes 2 and the two liquid pipes 7 to the external pipeline.

[0034] In particular, multiple grooves 9 are provided on one side of both housings 3, and two connecting brackets 11 are fixed to both sides of the fixing frame 5 by bolts. Two positioning pins 20 are slidably connected inside the connecting bracket 11. One end of the two positioning pins 20 is fixed with a protrusion 10 that is inserted into the groove 9 by bolts. One side of the protrusion 10 is rotatably connected to a screw 12 that is threaded to the connecting bracket 11 by a bearing. By rotating the screw 12, the screw 12 drives the protrusion 10 to be inserted into the groove 9, thereby fixing the housing 3 and preventing the housing 3 from moving during use.

[0035] Working principle: When needed, the coolant is drawn from the coolant storage tank using a circulating pump and other equipment, and added to multiple branch pipes 19 inside the housing 3 through the connecting component on one side of the liquid pipe 7. The coolant is then discharged from the liquid pipe 7 on the other side and returns to the coolant storage tank.

[0036] During this process, high-temperature gas is injected into the two housings 3 through one of the gas pipes 2, splitting the gas into two streams. The servo motor rotates forward, and the output shaft of the servo motor drives the threaded rod 14 to rotate. The threaded rod 14 drives the two connecting plates 15 to move to the right simultaneously, so that one set of connecting pipes 1 is closed and the other set of connecting pipes 1 is open.

[0037] Inside the closed connecting pipe 1, the high-temperature gas cannot be discharged quickly and eventually comes into prolonged contact with the pipe wall of the branch pipe 19, continuously exchanging heat with the cooling liquid inside, resulting in a significant drop in gas temperature.

[0038] Inside the connected pipe 1, the high-temperature gas will briefly come into contact with the walls of multiple branch pipes 19 and quickly exit from another gas pipe 2, with a relatively low degree of gas temperature drop.

[0039] The servo motor reverses, driving the two connecting plates 15 to move to the left simultaneously. The previously connected connecting pipe 1 is closed, and the previously closed connecting pipe 1 is opened. The high-temperature gas flows inside according to the above principle. Finally, the two streams of high-temperature gas leave the gas pipe 2 and re-merge into one. Due to the large temperature difference, the overall temperature of the gas decreases, thus achieving a cooling effect. The high-temperature gas leaving the gas pipe 2 will enter the next heat exchanger, and the above process will continue. This process is repeated, thereby greatly improving the efficiency of heat exchange.

[0040] This utility model has been described through the above embodiments. Those skilled in the art will understand that this utility model is not limited to the above embodiments. Many more modifications can be made based on the teachings of this utility model, and all such modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency shell-and-tube heat exchanger, comprising a fixed frame (5), wherein shells (3) are slidably connected to the inner walls of both sides of the fixed frame (5), and the two shells (3) are fixed to each other, characterized in that, Multiple second baffles (18) are fixedly connected to both housings (3). Multiple branch pipes (19) passing through the second baffles (18) are fixedly connected between the multiple second baffles (18). Multiple connecting pipes (1) communicating with the housing (3) are fixedly connected to the top of the housing (3), and the connecting pipes (1) are located on the top of the second baffles (18). A first baffle (13) is slidably connected to one side of each of the multiple connecting pipes (1). The multiple first baffles (13) located on one side of the housing (3) are fixedly connected to the same connecting plate (15). A power assembly is provided on the top of the two housings (3) to drive the two connecting plates (15) to move towards each other. Two air pipes (2) communicating with and symmetrically arranged are fixedly connected to the top of the two housings (3). Connecting components connecting the two housings (3) are provided on both sides of the two housings (3). A drive assembly for adjusting the height of the two housings (3) is provided at the bottom of the fixing frame (5).

2. The high-efficiency shell-and-tube heat exchanger according to claim 1, characterized in that, The power assembly includes two fixed plates (16) fixedly connected to the top of the two housings (3), and a threaded rod (14) threadedly connected to the two connecting plates (15) is rotatably connected between the two fixed plates (16) via a bearing. A servo motor that drives the threaded rod (14) to rotate axially is fixedly connected to one side of one of the fixed plates (16).

3. A high-efficiency shell-and-tube heat exchanger according to claim 2, characterized in that, Guide frames (17) are fixedly connected to the top of the two housings (3), and the guide frames (17) are slidably connected to the two connecting plates (15).

4. A high-efficiency shell-and-tube heat exchanger according to claim 1, characterized in that, The connecting assembly includes two flow guide shells (8) fixedly connected to one side of the two housings (3), and a liquid pipe (7) connected to the two flow guide shells (8) is fixedly connected to one side of the two flow guide shells (8).

5. A high-efficiency shell-and-tube heat exchanger according to claim 1, characterized in that, The drive assembly includes a cylinder (6) fixedly connected to the bottom of the mounting bracket (5), and the piston end of the cylinder (6) passes through the mounting bracket (5) and is fixed to the two housings (3).

6. A high-efficiency shell-and-tube heat exchanger according to claim 5, characterized in that, Each of the two housings (3) has multiple sliding grooves (4) on one side that are slidably connected to the fixing frame (5).

7. A high-efficiency shell-and-tube heat exchanger according to claim 1, characterized in that, Multiple grooves (9) are provided on one side of each of the two housings (3). Two connecting frames (11) are fixedly connected to both sides of the fixing frame (5). Two positioning columns (20) are slidably connected inside the connecting frame (11). One end of the two positioning columns (20) is fixedly connected to a protrusion (10) that is inserted into the groove (9). One side of the protrusion (10) is rotatably connected to a screw (12) that is threadedly connected to the connecting frame (11) via a bearing.

Images