Graphite heat exchanger

Abstract

The utility model discloses a graphite heat exchanger which comprises an upper shell, a lower shell is installed at the bottom end of the upper shell, a plurality of graphite heat exchange blocks are arranged inside the upper shell and the lower shell, polytetrafluoroethylene gaskets are arranged inside the upper shell and the lower shell between the adjacent graphite heat exchange blocks, a graphite upper sealing head is arranged at the top end of the upper shell, and a graphite lower sealing head is arranged at the bottom end of the graphite upper sealing head. A carbon steel upper cover plate is arranged above the graphite upper end socket, a first rubber gasket is installed between the carbon steel upper cover plate and the graphite upper end socket, a lower pressing flange is arranged on the outer wall of the graphite upper end socket, an upper pressing flange is arranged above the lower pressing flange, spring seats are arranged at the edge position of the top end of the carbon steel upper cover plate at equal intervals, and spring covers are arranged above the spring seats. And a first locking bolt is mounted at the top end of the spring cover. According to the graphite heat exchanger, the graphite heat exchanger can be conveniently and regularly cleaned and maintained, the maintenance difficulty and cost of the graphite heat exchanger are reduced, the purpose of easily transferring the graphite heat exchanger is achieved, and the sealing performance of the graphite heat exchanger is improved.

Description

Technical Field

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

[0002] Traditional metal heat exchangers often suffer from short lifespans and high maintenance costs when handling highly corrosive media due to insufficient corrosion resistance of the materials. Graphite materials, with their excellent corrosion resistance, good thermal conductivity, and high mechanical strength, are gradually becoming an ideal choice for solving this problem. Therefore, developing a graphite heat exchanger is of great practical significance.

[0003] A graphite heat exchanger, as described in reference announcement number CN211012580U, includes a shell and several graphite inner tubes. The graphite inner tubes are housed within the shell, and graphite outer tubes are sleeved around their outer sides. A tube sheet (first tube sheet) and a tube sheet (second tube sheet) are sequentially arranged at both ends of each graphite inner tube. These tube sheets are sleeved within the shell. An annular cavity is formed between the tube sheet and the graphite inner tubes, and these annular cavities are interconnected through channels within the tube sheet. The bottom of these channels leads to the outside of the shell via water pipes. Compared to existing technologies, this graphite heat exchanger, by creating an annular cavity between the graphite inner tubes and the tube sheets, and connecting these cavities through channels, allows water droplets evaporated from the graphite tubes to collect and drain through the channels to the water pipes, ultimately exiting the shell. This avoids water droplets accumulating at both ends of the shell. While this graphite heat exchanger can be effectively applied, it is generally inconvenient to disassemble and reassemble the entire graphite heat exchanger, making cleaning and maintenance difficult and presenting certain inconveniences. Utility Model Content

[0004] The purpose of this utility model is to provide a graphite heat exchanger to solve the problem mentioned in the background art that although graphite heat exchangers can be well applied, it is usually inconvenient to disassemble and assemble the graphite heat exchanger as a whole, which makes it difficult to clean and maintain the graphite heat exchanger, and there are certain inconveniences.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A graphite heat exchanger includes an upper shell, a lower shell installed at the bottom of the upper shell, and several graphite heat exchange blocks inside both the upper and lower shells. PTFE gaskets are provided inside both the upper and lower shells between adjacent graphite heat exchange blocks. A graphite upper end cap is provided at the top of the upper shell, and a carbon steel upper cover plate is provided above the graphite upper end cap. A first rubber gasket is installed between the carbon steel upper cover plate and the graphite upper end cap. A lower pressure flange is provided on the outer wall of the graphite upper end cap, and an upper pressure flange is provided above the lower pressure flange. Equally spaced spring seats are provided at the edge of the top of the carbon steel upper cover plate, and the spring seats are positioned above... All are equipped with spring covers, and a first locking bolt is installed at the top of the spring cover. The bottom end of the first locking bolt passes through the spring cover, spring seat, carbon steel upper cover plate, and upper flange and is threaded to the lower flange. A spring element is wound on the outer wall of the first locking bolt between the spring cover and the spring seat. A graphite lower end is provided at the bottom of the lower housing. A carbon steel lower cover plate is provided below the graphite lower end. A second rubber gasket is installed between the carbon steel lower cover plate and the graphite lower end. A positioning seat is provided on the outer wall of the lower end of the graphite lower end. Several second locking bolts are installed at the edge of the bottom end of the carbon steel lower cover plate. The top end of the second locking bolt passes through the carbon steel lower cover plate and is threaded to the positioning seat.

[0006] Preferably, an upper flange is fixed on the outer wall of the lower end of the upper housing, and a lower flange is fixed on the outer wall of the lower housing below the upper flange. The upper and lower flanges are provided to facilitate the assembly and disassembly of the upper and lower housings.

[0007] Preferably, a second lifting lug is provided on one side of the lower shell, and a first lifting lug is provided on both sides of the upper shell. The second and first lifting lugs are used to lift and transport the graphite heat exchanger.

[0008] Preferably, the top of the upper flange is equipped with equally spaced flange connecting bolts, and the bottom end of the flange connecting bolts is connected to the bottom end of the lower flange. The flange connecting bolts are used to lock the upper flange and the lower flange together.

[0009] Preferably, the upper shell outer wall below the first lifting lug is provided with equally spaced support frames, and the included angle between adjacent support frames is ninety degrees. The support frames are provided to allow the graphite heat exchanger to be installed vertically.

[0010] Preferably, a second rubber O-ring is provided between the positioning seat on the outer side of the second rubber gasket and the carbon steel lower cover plate, and a first rubber O-ring is provided at the contact position of the upper and lower pressure flanges. The second and first rubber O-rings are used to seal the positioning seat and the carbon steel lower cover plate and the upper and lower pressure flanges, respectively.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the graphite heat exchanger not only facilitates regular cleaning and maintenance of the graphite heat exchanger, thereby reducing the maintenance difficulty and cost of the graphite heat exchanger, but also achieves the purpose of easy transfer and transportation of the graphite heat exchanger, and improves the sealing performance of the graphite heat exchanger during use.

[0012] (1) By setting up the first locking bolt, the upper flange and the lower flange and other related components, the carbon steel upper cover plate can be disassembled and installed on the top of the graphite upper head. Because of the setting of the second locking bolt and the positioning seat, the carbon steel lower cover plate can be disassembled and installed on the bottom of the graphite lower head. Also, because of the setting of the upper flange, the lower flange and the flange connecting bolt, the upper shell and the lower shell can be disassembled and installed. Thus, the graphite heat exchanger can be designed as a detachable structure, which facilitates the regular cleaning and maintenance of the graphite heat exchanger, thereby reducing the maintenance difficulty and cost of the graphite heat exchanger.

[0013] (2) By setting the first lifting lug and the second lifting lug, the graphite heat exchanger can be vertically lifted and transported by the two first lifting lugs, and the graphite heat exchanger can be horizontally lifted and transported by one first lifting lug and the second lifting lug, thereby achieving the purpose of facilitating the transfer and transportation of the graphite heat exchanger.

[0014] (3) The first rubber gasket is used to seal the connection between the carbon steel upper cover plate and the graphite upper head. The first rubber O-ring is used to seal the contact between the lower flange and the upper flange. The second rubber gasket and the second rubber O-ring are used to seal the connection between the graphite lower head and the carbon steel lower cover plate and the connection between the carbon steel lower cover plate and the positioning seat, thereby improving the sealing performance of the graphite heat exchanger during use. Attached Figure Description

[0015] Figure 1 This is a frontal cross-sectional view of the present invention.

[0016] Figure 2 This is a top view of the structure of this utility model;

[0017] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0018] Figure 4 This utility model Figure 1 Enlarged structural diagram at point B.

[0019] In the diagram: 1. Upper shell; 2. Lower shell; 3. Graphite heat exchange block; 4. PTFE gasket; 5. Carbon steel upper cover plate; 6. Graphite upper end cap; 7. Bearing frame; 8. Upper flange; 9. Lower flange; 10. Flange bolt; 11. Graphite lower end cap; 12. Carbon steel lower cover plate; 13. First lifting lug; 14. Second lifting lug; 15. First rubber gasket; 16. First rubber O-ring; 17. Lower pressure flange; 18. Upper pressure flange; 19. Spring seat; 20. Spring component; 21. Spring cover; 22. First locking bolt; 23. Second rubber O-ring; 24. Second rubber gasket; 25. Positioning seat; 26. Second locking bolt. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figure 1-4 The present invention provides an embodiment of a graphite heat exchanger, comprising an upper shell 1, an upper flange 8 fixed on the outer wall of the lower end of the upper shell 1, and a lower flange 9 fixed on the outer wall of the lower shell 2 below the upper flange 8.

[0022] In use, the upper flange 8 and the lower flange 9 are provided to facilitate the disassembly and assembly of the upper housing 1 and the lower housing 2.

[0023] The top of the upper flange 8 is equipped with equally spaced flange connecting bolts 10, and the bottom end of the flange connecting bolts 10 is connected to the bottom end of the lower flange 9.

[0024] In use, the flange bolt 10 is used to lock the upper flange 8 and the lower flange 9 together.

[0025] The lower shell 2 is installed at the bottom of the upper shell 1. A second lifting lug 14 is provided on one side of the lower shell 2. A first lifting lug 13 is provided on both sides of the upper shell 1.

[0026] In use, the graphite heat exchanger is hoisted and transported by setting the second lifting lug 14 and the first lifting lug 13.

[0027] The outer wall of the upper shell 1 below the first lifting lug 13 is provided with equally spaced support frames 7, and the included angle between adjacent support frames 7 is ninety degrees.

[0028] In use, the support frame 7 is set up to allow the graphite heat exchanger to be installed vertically.

[0029] Both the upper shell 1 and the lower shell 2 have several graphite heat exchange blocks 3 inside. PTFE gaskets 4 are installed inside the upper shell 1 and lower shell 2 between adjacent graphite heat exchange blocks 3. A graphite upper end cap 6 is located at the top of the upper shell 1. A carbon steel upper cover plate 5 is located above the graphite upper end cap 6. A first rubber gasket 15 is installed between the carbon steel upper cover plate 5 and the graphite upper end cap 6. A lower pressure flange 17 is located on the outer wall of the graphite upper end cap 6. An upper pressure flange 18 is located above the lower pressure flange 17. Equally spaced spring seats 19 are located at the edge of the top of the carbon steel upper cover plate 5. A spring cover 21 is located above each spring seat 19. A first locking bolt 22 is installed at the top of each spring cover 21. The bottom end of a locking bolt 22 passes through the spring cover 21, the spring seat 19, the carbon steel upper cover plate 5, and the upper pressure flange 18 and is threadedly connected to the lower pressure flange 17. A spring element 20 is wound on the outer wall of the first locking bolt 22 between the spring cover 21 and the spring seat 19. A graphite lower end cap 11 is provided at the bottom end of the lower housing 2. A carbon steel lower cover plate 12 is provided below the graphite lower end cap 11. A second rubber gasket 24 is installed between the carbon steel lower cover plate 12 and the graphite lower end cap 11. A second rubber O-ring 23 is provided between the positioning seat 25 on the outer side of the second rubber gasket 24 and the carbon steel lower cover plate 12. A first rubber O-ring 16 is provided at the contact position between the upper pressure flange 18 and the lower pressure flange 17.

[0030] In use, the second rubber O-ring 23 and the first rubber O-ring 16 are set to seal the positioning seat 25 and the carbon steel lower cover plate 12, and the upper pressure flange 18 and the lower pressure flange 17, respectively.

[0031] A positioning seat 25 is provided on the outer wall of the lower end of the graphite lower head 11. Several second locking bolts 26 are installed at the edge of the bottom end of the carbon steel lower cover plate 12. The top of the second locking bolts 26 penetrates the carbon steel lower cover plate 12 and is threadedly connected to the positioning seat 25.

[0032] In this embodiment, the graphite heat exchanger is first vertically lifted and transported using two lifting lugs 13 and one lifting lug 14, facilitating its transfer. Then, several graphite heat exchange blocks 3, made of high-density, high-purity graphite material, are installed inside both the upper shell 1 and the lower shell 2. Inlet and outlet ports are provided on the outer walls of both shells, and one end of each graphite upper end cap 6 and lower end cap 11 has an opening. Furthermore, the graphite heat exchange blocks 3 are sealed together using PTFE gaskets 4, forming multiple isolated fluid channels for the flow of hot and cold fluids, facilitating heat exchange. Finally, a first rubber gasket 15 seals the connection between the carbon steel upper cover plate 5 and the graphite upper end cap 6. The installation of a rubber O-ring 16 provides a sealing connection at the contact point between the lower pressure flange 17 and the upper pressure flange 18. Furthermore, the installation of the second rubber gasket 24 and the second rubber O-ring 23 seals the connection points between the graphite lower end cap 11 and the carbon steel lower cover plate 12, as well as between the carbon steel lower cover plate 12 and the positioning seat 25, significantly enhancing the sealing performance of the graphite heat exchanger. Finally, the installation of the first locking bolt 22, the upper pressure flange 18, the lower pressure flange 17, and other related components further enhances the sealing performance. The carbon steel upper cover plate 5 is disassembled and installed on the top of the graphite upper head 6. The second locking bolt 26 and the positioning seat 25 facilitate the disassembly and installation of the carbon steel lower cover plate 12 on the bottom of the graphite lower head 11. The upper flange 8, lower flange 9 and flange connecting bolt 10 facilitate the disassembly and assembly of the upper shell 1 and the lower shell 2. Thus, the graphite heat exchanger can be designed as a detachable structure to facilitate regular cleaning and maintenance of the graphite heat exchanger, thereby completing the use of the graphite heat exchanger.

Claims

1. A graphite heat exchanger, characterized in that: The system includes an upper shell (1), with a lower shell (2) installed at the bottom of the upper shell (1). Both the upper shell (1) and the lower shell (2) contain several graphite heat exchange blocks (3). A PTFE gasket (4) is installed inside each adjacent graphite heat exchange block (3) in both the upper shell (1) and the lower shell (2). A graphite upper end cap (6) is located at the top of the upper shell (1), and a carbon steel upper cover plate (5) is located above the graphite upper end cap (6). A first rubber gasket (15) is installed between the carbon steel upper cover plate (5) and the graphite upper end cap (6). A lower pressure flange (17) is provided on the outer wall of the graphite upper end cap (6), and an upper pressure flange (18) is provided above the lower pressure flange (17). Equally spaced spring seats (19) are provided at the edge of the top of the carbon steel upper cover plate (5). A spring cover (21) is provided above each spring seat (19), and a first lock is installed at the top of the spring cover (21). Tightening bolt (22), the bottom end of the first locking bolt (22) passes through the spring cover (21), spring seat (19), carbon steel upper cover plate (5) and upper pressure flange (18) and is threadedly connected to the lower pressure flange (17). A spring element (20) is wound on the outer wall of the first locking bolt (22) between the spring cover (21) and the spring seat (19). The bottom end of the lower housing (2) is provided with a graphite lower end cap (11). The lower end of the graphite lower end cap (11) has a lower end cap (11). The lower carbon steel cover plate (12) is provided, and a second rubber gasket (24) is installed between the lower carbon steel cover plate (12) and the lower graphite head (11). A positioning seat (25) is provided on the outer wall of the lower end of the lower graphite head (11). Several second locking bolts (26) are installed at the edge of the bottom end of the lower carbon steel cover plate (12). The top end of the second locking bolt (26) passes through the lower carbon steel cover plate (12) and is threadedly connected to the positioning seat (25).

2. A graphite heat exchanger according to claim 1, characterized in that: An upper flange (8) is fixed on the outer wall of the lower end of the upper housing (1), and a lower flange (9) is fixed on the outer wall of the lower housing (2) below the upper flange (8).

3. A graphite heat exchanger according to claim 1, characterized in that: The lower shell (2) has a second lifting lug (14) on one side of its lower outer wall, and the upper shell (1) has a first lifting lug (13) on both sides of its upper outer wall.

4. A graphite heat exchanger according to claim 2, characterized in that: The top of the upper flange (8) is equipped with flange connecting bolts (10) at equal intervals, and the bottom end of the flange connecting bolts (10) is connected to the bottom end of the lower flange (9).

5. A graphite heat exchanger according to claim 3, characterized in that: The outer wall of the upper shell (1) below the first lifting lug (13) is provided with equally spaced support frames (7), and the included angle between adjacent support frames (7) is ninety degrees.

6. A graphite heat exchanger according to claim 1, characterized in that: A second rubber O-ring (23) is provided between the positioning seat (25) on the outer side of the second rubber pad (24) and the carbon steel lower cover plate (12), and a first rubber O-ring (16) is provided at the contact position between the upper pressure flange (18) and the lower pressure flange (17).

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