A shell-and-tube graphite heat exchanger

Abstract

The utility model relates to graphite heat exchanger technical field, and disclose a kind of tubular graphite heat exchanger, including shell, shell bottom is fixedly connected with support pedestal, shell one side output movable joint has maintenance hatch, shell is fixedly connected with cooling assembly away from maintenance hatch one side output, shell bottom is fixedly connected with circulation assembly near support pedestal one side, the utility model structure design compact and reasonable, realize efficient heat exchange by graphite tube bundle, and maintain the stable operation of system by circulation assembly and cooling assembly, its design considers heat exchange efficiency, fluid circulation, maintenance convenience and material corrosion resistance and multiple aspects, ensure the efficient, safe and reliable operation of equipment, solve the problem that tubular graphite heat exchanger heat exchange is low, fluid resistance is big, and not easy to maintain.

Description

Technical Field

[0001] This utility model relates to the field of graphite heat exchanger technology, specifically a shell-and-tube graphite heat exchanger. Background Technology

[0002] In industrial production processes such as petroleum, chemical, light industry, pharmaceuticals, and energy, it is often necessary to heat cryogenic fluids or cool high-temperature fluids, as well as vaporize liquids into steam or condense steam into liquids. These processes all require heat exchangers. Traditional heat exchanger materials often fail to meet the requirements for long-term stable operation in corrosive media. Graphite, due to its excellent chemical stability and high thermal conductivity, has become an ideal choice for manufacturing heat exchangers. Shell-and-tube graphite heat exchangers employ a shell-and-tube structure, which greatly increases the heat transfer area, thereby improving heat transfer efficiency. At the same time, the shell-and-tube structure also results in relatively low flow resistance of the fluid within the heat exchanger, facilitating smooth fluid flow and heat exchange.

[0003] Traditional graphite heat exchangers are difficult to maintain, have unstable structures, and low heat transfer efficiency. To address this, we propose a shell-and-tube graphite heat exchanger. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a shell-and-tube graphite heat exchanger, which solves the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a shell-and-tube graphite heat exchanger, comprising a shell, a support base fixedly connected to the bottom of the shell, a maintenance cover movably connected to one output end of the shell, a cooling component fixedly connected to the output end of the shell away from the maintenance cover, and a circulation component fixedly connected to the bottom of the shell near the support base.

[0008] Preferably, the maintenance hatch includes a hatch cover, a discharge hole, and a handle. The hatch cover is movably connected to one side of the top of the outer shell, and a discharge hole is provided on the outer wall of one end of the discharge hole. A handle is fixedly connected to the outer wall of the hatch cover near the discharge hole.

[0009] Preferably, the cooling assembly includes a tube seat, a second tube seat, a graphite tube bundle, a fixed tube sheet, an isolation plate, a filter box, a water pump, a discharge pipe, a filling chamber, and a filling port. A tube seat is fixedly connected to the inner wall of the outer casing near the maintenance cover. A second tube seat is fixedly connected to the inner wall of the outer casing away from the tube seat. A graphite tube bundle is inserted into one output end of the tube seat, and the output end of the graphite tube bundle away from the tube seat is inserted into the inner wall of one side of the second tube seat. A fixed tube sheet is sleeved on the outer wall of one end of the graphite tube bundle. An isolation plate is fixedly connected to the inner wall of the outer casing near the tube seat. A filter box is fixedly connected to the outer wall of the isolation plate away from the tube seat, and the output end of the filter box passes through the outer wall of one side of the isolation plate. A water pump is fixedly connected to the output end of the filter box away from the isolation plate. A discharge pipe is fixedly connected to the output end of the water pump away from the filter box, and the output end of the discharge pipe passes through the discharge port. A filling chamber is fixedly connected to the output end of the outer casing near the second tube seat, and a filling port is provided at the top of the filling chamber.

[0010] Preferably, a coolant filling port is provided at one end of the top of the outer casing, and the coolant filling port is located directly above the graphite tube bundle.

[0011] Preferably, the circulation assembly includes a water suction pump, a connecting pipe, and a pressurizing pump. The water suction pump is fixedly connected to one side of the bottom of the housing, and the top output end of the water suction pump passes through the inner wall of the bottom of the housing. The connecting pipe is fixedly connected to one output end of the water suction pump, and the pressurizing pump is fixedly connected to the output end of the connecting pipe on the side away from the water suction pump. The top of the pressurizing pump is fixedly connected to the outer wall of the bottom of the housing, and the top output end of the pressurizing pump passes through the bottom of the inner wall of the housing.

[0012] Preferably, the fixed tube sheet is made of stainless steel.

[0013] Preferably, the outer shell is made of carbon steel.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a shell-and-tube graphite heat exchanger, which has the following advantages:

[0016] 1. This shell-and-tube graphite heat exchanger adopts a single-tube sealed structure, allowing each tube to be independently removed and replaced. This design facilitates later maintenance and repair work, and reduces maintenance costs.

[0017] 2. This shell-and-tube graphite heat exchanger, through its efficient heat exchange and circulating cooling system, can significantly reduce energy consumption and pollutant emissions, meeting the requirements of environmental protection and energy conservation.

[0018] 3. The unique tube structure and fluid channel design of this shell-and-tube graphite heat exchanger result in relatively low flow resistance of the fluid within the heat exchanger, which is conducive to smooth fluid flow and heat exchange. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the maintenance hatch cover of this utility model;

[0021] Figure 3 This is a cross-sectional schematic diagram of the cooling component of this utility model;

[0022] Figure 4 This is a schematic diagram of the circulation component of this utility model.

[0023] In the diagram: 1. Outer shell; 2. Support base; 3. Maintenance compartment cover; 4. Cooling assembly; 5. Circulation assembly; 6. Compartment cover; 7. Discharge port; 8. Handle; 9. Tube seat; 10. Second tube seat; 11. Graphite tube bundle; 12. Fixed tube sheet; 13. Isolation plate; 14. Filter box; 15. Water pump; 16. Discharge pipe; 17. Injection chamber; 18. Injection port; 19. Coolant filling port; 20. Water suction pump; 21. Connecting pipe; 22. Pressure pump. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 A shell-and-tube graphite heat exchanger includes a shell 1, a support base 2 fixedly connected to the bottom of the shell 1, a maintenance cover 3 movably connected to one output end of the shell 1, a cooling component 4 fixedly connected to the output end of the shell 1 away from the maintenance cover 3, and a circulation component 5 fixedly connected to the bottom of the shell 1 near the support base 2.

[0026] Furthermore, the maintenance cover 3 includes a cover 6, a discharge hole 7, and a handle 8. The cover 6 is movably connected to one side of the top of the outer shell 1. The discharge hole 7 is provided on the outer wall of one end of the discharge hole 7. The handle 8 is fixedly connected to the outer wall of the cover 6 near the discharge hole 7.

[0027] Furthermore, the cooling assembly 4 includes a tube seat 9, a second tube seat 10, a graphite tube bundle 11, a fixed tube sheet 12, an isolation plate 13, a filter box 14, a water pump 15, a discharge pipe 16, a filling chamber 17, and a filling port 18. The tube seat 9 is fixedly connected to the inner wall of the outer shell 1 near the maintenance cover 3, and the second tube seat 10 is fixedly connected to the inner wall of the outer shell 1 away from the tube seat 9. The graphite tube bundle 11 is inserted into the output end of the tube seat 9, and the output end of the graphite tube bundle 11 away from the tube seat 9 is inserted into the inner wall of the second tube seat 10. A fixed tube sheet is sleeved on the outer wall of one end of the graphite tube bundle 11. 12. An isolation plate 13 is fixedly connected to the inner wall of the outer shell 1 near the tube seat 9. A filter box 14 is fixedly connected to the outer wall of the isolation plate 13 away from the tube seat 9. The output end of the filter box 14 passes through the outer wall of the isolation plate 13. A water pump 15 is fixedly connected to the output end of the filter box 14 away from the isolation plate 13. A discharge pipe 16 is fixedly connected to the output end of the water pump 15 away from the filter box 14. The output end of the discharge pipe 16 passes through the discharge hole 7. A material injection chamber 17 is fixedly connected to the output end of the outer shell 1 near the second tube seat 10. A material injection port 18 is provided on the top of the material injection chamber 17.

[0028] Furthermore, a coolant filling port 19 is provided at one end of the top of the outer casing 1, and the coolant filling port 19 is located directly above the graphite tube bundle 11.

[0029] Furthermore, the circulation component 5 includes a water suction pump 20, a connecting pipe 21, and a booster pump 22. The water suction pump 20 is fixedly connected to one side of the bottom of the housing 1, and the top output end of the water suction pump 20 passes through the inner wall of the bottom of the housing 1. The connecting pipe 21 is fixedly connected to one side of the output end of the water suction pump 20. The booster pump 22 is fixedly connected to the output end of the connecting pipe 21 away from the water suction pump 20. The top of the booster pump 22 is fixedly connected to the outer wall of the bottom of the housing 1, and the top output end of the booster pump 22 passes through the bottom of the inner wall of the housing 1.

[0030] Furthermore, the fixed tube sheet 12 is made of stainless steel.

[0031] Furthermore, the outer shell 1 is made of carbon steel.

[0032] Working principle: First, the fluid to be cooled or heated enters the graphite tube bundle 11 through the injection chamber 17 and injection port 18. Due to its high thermal conductivity, the graphite tube bundle 11 can quickly transfer the heat of the fluid to the external medium. At the same time, coolant (such as water or other cooling medium) is added into the outer shell 1 through the coolant filling port 19 and flows around the graphite tube bundle 11. Due to the temperature difference between the fluid inside the graphite tube bundle 11 and the external coolant, heat is transferred from the internal fluid to the external coolant through the tube wall of the graphite tube bundle 11, realizing heat exchange. The isolation plate 13 separates the flow area of ​​the graphite tube bundle 11 from the coolant to ensure the safety and efficiency of the heat exchange process. The filter box 14 is used to filter impurities in the coolant to ensure the cleanliness and efficient operation of the cooling system. The suction pump 20 draws the heated coolant from the bottom of the outer shell 1 and delivers it to the pressurization pump 22 through the connecting pipe 21. The pressurization pump 22 pressurizes the coolant and then re-injects it into the bottom of the outer shell 1 to form a circulation flow. This circulation process ensures continuous heat exchange between the coolant and the graphite tube bundle 11, thereby maintaining the system's cooling effect. The water pump 15 draws the filtered coolant from the filter box 14 and discharges it out of the system or for further processing through the discharge pipe 16 and discharge port 7. This process helps maintain the cleanliness of the coolant and the stability of the system. The design of the maintenance cover 3 allows users to easily open the cover 6 and perform cleaning, maintenance, or inspection operations through the discharge port 7. The handle 8 provides a convenient opening method. The fixed tube sheet 12 is made of stainless steel, which has good corrosion resistance and strength, ensuring the stable fixation and long-term use of the graphite tube bundle 11. The outer shell 1 is made of carbon steel, ensuring both structural strength and corrosion resistance, making it suitable as the outer shell material for the heat exchanger.

[0033] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shell-and-tube graphite heat exchanger, comprising a shell (1), characterized in that: The bottom of the outer shell (1) is fixedly connected to a support base (2), and a maintenance cover (3) is movably connected to one side of the outer shell (1). A cooling component (4) is fixedly connected to the output end of the outer shell (1) away from the maintenance cover (3). A circulation component (5) is fixedly connected to the bottom of the outer shell (1) near the support base (2). The cooling assembly (4) includes a tube seat (9), a second tube seat (10), a graphite tube bundle (11), and a fixed tube plate (12). The inner wall of the outer shell (1) near the maintenance cover (3) is fixedly connected to the tube seat (9), and the inner wall of the outer shell (1) away from the tube seat (9) is fixedly connected to the second tube seat (10). One end of the graphite tube bundle (11) is inserted into the output end of the tube seat (9), and the other end is inserted into the inner wall of the second tube seat (10). The fixed tube plate (12) is sleeved on the outer wall of one end of the graphite tube bundle (11).

2. A shell-and-tube graphite heat exchanger according to claim 1, characterized in that: The maintenance cover (3) includes a cover (6), a discharge hole (7), and a handle (8). The cover (6) is movably connected to one side of the top of the outer shell (1). The discharge hole (7) is provided on the outer wall of one end of the discharge hole (7). The handle (8) is fixedly connected to the outer wall of the cover (6) near the discharge hole (7).

3. A shell-and-tube graphite heat exchanger according to claim 1, characterized in that: The cooling assembly (4) also includes an isolation plate (13), a filter box (14), a water pump (15), a discharge pipe (16), a filling chamber (17), and a filling port (18). The inner wall of the outer shell (1) near the pipe seat (9) is fixedly connected to the isolation plate (13). The outer wall of the isolation plate (13) away from the pipe seat (9) is fixedly connected to the filter box (14), and the output end of the filter box (14) passes through the outer wall of the isolation plate (13). The output end of the filter box (14) away from the isolation plate (13) is fixedly connected to the water pump (15). The output end of the water pump (15) away from the filter box (14) is fixedly connected to the discharge pipe (16), and the output end of the discharge pipe (16) passes through the discharge hole (7). The output end of the outer shell (1) near the second pipe seat (10) is fixedly connected to the filling chamber (17), and the top of the filling chamber (17) is provided with a filling port (18).

4. A shell-and-tube graphite heat exchanger according to claim 3, characterized in that: The top end of the outer shell (1) is provided with a coolant filling port (19), and the coolant filling port (19) is located directly above the graphite tube bundle (11).

5. A shell-and-tube graphite heat exchanger according to claim 1, characterized in that: The circulation component (5) includes a water pump (20), a connecting pipe (21), and a booster pump (22). The water pump (20) is fixedly connected to one side of the bottom of the housing (1), and the top output end of the water pump (20) passes through the bottom inner wall of the housing (1). The connecting pipe (21) is fixedly connected to one side of the output end of the water pump (20). The booster pump (22) is fixedly connected to the output end of the connecting pipe (21) away from the water pump (20). The top of the booster pump (22) is fixedly connected to the bottom outer wall of the housing (1), and the top output end of the booster pump (22) passes through the bottom of the inner wall of the housing (1).

6. A shell-and-tube graphite heat exchanger according to claim 3, characterized in that: The fixed tube sheet (12) is made of stainless steel.

7. A shell-and-tube graphite heat exchanger according to claim 1, characterized in that: The outer shell (1) is made of carbon steel.

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