Tubular silicon carbide heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, and discloses a tubular silicon carbide heat exchanger which comprises a tube shell, first connecting rings are fixedly connected to the peripheries of the two ends of the tube shell, second connecting rings are attached to the far-away sides of the two first connecting rings, and the far-away ends of connecting strips on the two sides are rotationally connected with two-way screws. One end of each bidirectional screw rod penetrates into the connecting strip, the two ends of each bidirectional screw rod are in threaded connection with moving plates, the ends, close to each other, of the moving plates on the front side and the rear side are fixedly connected with arc plates, and the sides, close to each other, of the arc plates are fixedly connected with a plurality of mounting rods; and the plurality of mounting rods are respectively clamped in the connecting ring I and the connecting ring II. According to the utility model, the two-way screw rod is rotated to drive the arc plate and the correspondingly connected mounting rod to be respectively inserted into the connecting ring I and the connecting ring II, so that the end shell and the tube shell can be fixed, and the effect of conveniently assembling and disassembling the end shell and the tube shell is further achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a shell-and-tube silicon carbide heat exchanger. Background Art

[0002] A heat exchanger is a device used to transfer heat. It can transfer heat from one fluid to another, or from one medium to another, and the two mediums are isolated from each other during the process. The main purpose of a heat exchanger is to achieve the transfer of thermal energy between different fluids, usually to heat or cool the fluid, or to control the temperature during the process.

[0003] After searching, the Chinese patent announcement number: CN212870852U discloses a silicon carbide shell-and-tube heat exchanger, including a heat exchanger barrel, a first tube sheet, a head, a silicon carbide heat exchange tube and a first sealing assembly; the first tube sheet is tightly arranged between the heat exchanger barrel and the head; any silicon carbide heat exchange tube is tightly connected between the first tube sheets through the first sealing assembly; the first tube sheet is a steel-lined injection-molded PFA structure; the head is a PFA-lined structure. The utility model adopts a heat exchange tube made of silicon carbide, which has high thermal conductivity, small thermal expansion coefficient, high thermal shock resistance, and strong corrosion resistance, thereby greatly improving the adaptability of the heat exchanger to highly corrosive high-temperature working conditions; and each silicon carbide heat exchange tube is an independent sealing structure, which makes the maintenance of the heat exchange tube more convenient. In addition, the first tube sheet with a steel-lined injection-molded PFA structure and the head with an inner PFA lined structure make the first tube sheet and the head have better corrosion resistance, and the overall structure is more stable and reliable; however, the connection between the head and the cylinder of the heat exchanger in this application is tightened and fixed by multiple bolts, which results in the need to tighten multiple bolts when installing and disassembling the head of the heat exchanger, which is more troublesome. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a shell-and-tube silicon carbide heat exchanger, aiming to improve the problem in the prior art that when installing and disassembling the head of the heat exchanger, multiple bolts need to be tightened, which is relatively troublesome.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a shell and tube silicon carbide heat exchanger, including a tube shell, a mounting and disassembly mechanism is arranged on the front side of the tube shell, the outer peripheries of both ends of the tube shell are fixedly connected with a connecting ring 1, the two connecting rings 1 are fitted with connecting rings 2 on the sides away from each other, the inner walls of the two connecting rings 2 are fixedly connected with end shells, the two connecting rings 1 and the connecting rings 2 are provided with connecting strips on the front and back sides, the ends away from each other of the connecting strips on both sides are rotatably connected with bidirectional screws, one end of multiple bidirectional screws penetrates into the connecting strips, both ends of multiple bidirectional screws are threadedly connected with moving plates, the close ends of the moving plates on the front and rear sides are fixedly connected with arc plates, the close sides of multiple groups of arc plates are fixedly connected with multiple mounting rods, and the multiple mounting rods are respectively clamped in the connecting ring 1 and the connecting ring 2.

[0006] As a further description of the above technical solution:

[0007] The assembly and disassembly mechanism includes a connecting shell, which is engaged with the front part of the tube shell, and the upper and lower parts of the front side of the tube shell are fixedly connected with fixing blocks, and the upper and lower walls of the connecting shell are fixedly connected with mounting blocks, and two mounting blocks are engaged with the fixing blocks, and the two fixing blocks are penetrated by pull rods on the far sides, and the close ends of the two pull rods are fixedly connected with connecting plates, and the front and rear parts of the far sides of the two connecting plates are fixedly connected with one end of a spring, and the other ends of multiple springs are fixedly connected to the inner wall of the fixing block, and the close sides of the two connecting plates are fixedly connected with clamping blocks, and the two clamping blocks penetrate into the mounting blocks.

[0008] As a further description of the above technical solution:

[0009] Insert blocks are fixedly connected to the middle parts of the adjacent sides of the front and rear connecting strips, and a plurality of the insert blocks are all engaged in the first connecting ring and the second connecting ring.

[0010] As a further description of the above technical solution:

[0011] The front and rear parts of the two connecting rings that are close to each other are fixedly connected with positioning plates, and the plurality of positioning plates are all clamped in the interior of the connecting ring.

[0012] As a further description of the above technical solution:

[0013] Limiting rods are arranged on the adjacent sides of the bidirectional screw rods at the front and rear sides, and both ends of the limiting rods penetrate the moving plate and are fixedly connected to the inner wall of the connecting strip.

[0014] As a further description of the above technical solution:

[0015] The upper and lower sides of the end shell on one side are respectively connected with a liquid inlet pipe 1 and a liquid discharge pipe 1, the upper side of one end of the tube shell is connected with a liquid inlet pipe 2, and the lower side of the other end of the tube shell is connected with a liquid discharge pipe 2.

[0016] As a further description of the above technical solution:

[0017] A partition plate is fixedly connected to the middle parts of the two end shells.

[0018] As a further description of the above technical solution:

[0019] Guide rods are passed through the front and rear sides of the two connecting plates, and the upper and lower ends of the plurality of guide rods are fixedly connected to the inner wall of the fixing block.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, the connecting ring 2 can be fitted with the connecting ring 1, and then the bidirectional screw can be rotated to drive the arc plate and the correspondingly connected mounting rod to be inserted into the connecting ring 1 and the connecting ring 2 respectively, so that the end shell and the tube shell can be fixed, thereby achieving the effect of facilitating the assembly and disassembly of the end shell and the tube shell.

[0022] 2. In the utility model, the card block can be pulled out from the mounting block by pulling the pull rod, and then the connecting shell can be pulled out and the inside of the tube shell can be inspected. When the inspection is completed, the connecting shell can be inserted into the tube shell, and the mounting block can be inserted into the fixing block, so that the connecting shell can be fixed, thereby achieving the effect of facilitating the assembly and disassembly of the connecting shell to facilitate the inspection and maintenance of the inside of the tube shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of the shell-and-tube silicon carbide heat exchanger proposed by the utility model;

[0024] Figure 2 This is a top partial cross-sectional view of the shell-and-tube silicon carbide heat exchanger proposed by the utility model;

[0025] Figure 3 It is a side partial cross-sectional view of the shell-and-tube silicon carbide heat exchanger proposed by the utility model;

[0026] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0027] Legend:

[0028] 1. Tube shell; 2. Assembly and disassembly mechanism; 201. Connecting shell; 202. Fixing block; 203. Mounting block; 204. Pull rod; 205. Connecting plate; 206. Guide rod; 207. Spring; 208. Block; 3. Connecting ring 1; 4. Connecting ring 2; 5. End shell; 6. Connecting strip; 7. Insert block; 8. Bidirectional screw; 9. Moving plate; 10. Arc plate; 11. Liquid inlet pipe 1; 12. Liquid inlet pipe 2; 13. Liquid discharge pipe 1; 14. Liquid discharge pipe 2; 15. Limit rod; 16. Mounting rod; 17. Positioning plate; 18. Partition. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Reference Figure 1 , Figure 2 and Figure 3 , the utility model provides an embodiment: a shell and tube silicon carbide heat exchanger, comprising a tube shell 1, a mounting and disassembly mechanism 2 is arranged on the front side of the tube shell 1, the outer peripheries of both ends of the tube shell 1 are fixedly connected with connecting rings 1 3, the two connecting rings 1 3 are fitted with connecting rings 2 4 on the far sides, the inner walls of the two connecting rings 2 4 are fixedly connected with end shells 5, the front and rear sides of the two connecting rings 1 3 and the connecting rings 2 4 are provided with connecting strips 6, the far ends of the connecting strips 6 on both sides are rotatably connected with bidirectional screws 8, one end of multiple bidirectional screws 8 penetrates into the connecting strips 6, both ends of multiple bidirectional screws 8 are threadedly connected with moving plates 9, the near ends of the front and rear side moving plates 9 are fixedly connected with arc plates 10, the near sides of multiple groups of arc plates 10 are fixedly connected with multiple mounting rods 16, and the multiple mounting rods 16 are respectively clamped in the connecting rings 1 3 and the connecting rings 2 4; the near sides of the front and rear side bidirectional screws 8 are provided with limiting rods 15, and both ends of the multiple limiting rods 15 penetrate the moving plate 9 and are fixedly connected to the inner wall of the connecting strip 6;

[0031] Specifically, when it is necessary to install and fix the end shell 5, the connecting ring 2 4 fixed on the end shell 5 can be fitted with the connecting ring 1 3 fixed on the tube shell 1, and then the connecting strips 6 are respectively set on the front and rear sides of the connecting ring 1 3 and the connecting ring 2 4, and then the two connected movable plates 9 can be driven to move by rotating the bidirectional screw 8. Since the movable plates 9 are limited by the limiting rods 15, the movable plates 9 cannot rotate with the rotation of the bidirectional screws 8, so that the movable plates 9 will move closer to or farther away from each other with the rotation of the bidirectional screws 8. When the movable plates 9 move, the connected arc plates 10 can be driven to move closer to or farther away from each other at the same time. When the two arc plates 10 are close at the same time, they can drive the respectively fixed installation rods 16 to be inserted into the connecting ring 1 3 and the connecting ring 2 4, so that the connecting ring 1 3 and the connecting ring 2 4 can be limited, so that the end shell 5 and the tube shell 1 can be fixed, thereby achieving the effect of facilitating the assembly and disassembly of the end shell 5 and the tube shell 1.

[0032] Reference Figure 1 , Figure 3 and Figure 4 The assembly and disassembly mechanism 2 includes a connecting shell 201, which is engaged with the front part of the tube shell 1. The upper and lower parts of the front side of the tube shell 1 are fixedly connected with fixed blocks 202. The upper and lower walls of the connecting shell 201 are fixedly connected with mounting blocks 203. The two mounting blocks 203 are engaged in the fixing blocks 202. The two fixing blocks 202 are penetrated by pull rods 204 on the far sides. The two pull rods 204 are fixedly connected with connecting plates 205 at the near ends. The two connecting plates 205 are fixedly connected with one end of springs 207 at the far sides. The other ends of multiple springs 207 are fixedly connected to the inner wall of the fixing block 202. The two connecting plates 205 are fixedly connected with clamping blocks 208 on the near sides. The two clamping blocks 208 penetrate into the mounting blocks 203. The front and rear sides of the two connecting plates 205 are penetrated by guide rods 206. The upper and lower ends of multiple guide rods 206 are fixedly connected to the inner wall of the fixing block 202.

[0033] Specifically, by pulling the pull rod 204, the connecting plate 205 can be driven to move so that the block 208 can be pulled out from the mounting block 203, so that the limit of the mounting block 203 can be cancelled, and then the connecting shell 201 can be pulled out, so that the staff can inspect and maintain the inside of the tube shell 1 from the position where the connecting plate 205 is installed. When the inspection and maintenance is completed, the staff can insert the connecting shell 201 into the tube shell 1. At this time, the mounting block 203 will be inserted into the fixed block 202 and squeeze the block 208 in the fixed block 202. When the block 208 is pressed, it will move toward the fixed block 20 2, when the fixing block 202 moves, the connecting plate 205 is driven to move, and the spring 207 can be compressed by the connecting plate 205. When the spring 207 is compressed, it provides an opposite force. Therefore, after the mounting block 203 is completely inserted into the fixing block 202, the connecting plate 205 can be pushed to reset under the action of the spring 207, and the clamping block 208 can be inserted into the mounting block 203 for limiting, so that the connecting shell 201 can be fixed, thereby achieving the effect of facilitating the assembly and disassembly of the connecting shell 201 and facilitating the inspection and maintenance of the interior of the tube shell 1.

[0034] Reference Figure 1 , Figure 2 and Figure 4 , the middle parts of the front and rear connecting strips 6 near the sides are fixedly connected with plug blocks 7, and multiple plug blocks 7 are all engaged in the connecting ring 1 3 and the connecting ring 2 4; the front and rear parts of the two connecting rings 2 4 near the sides are fixedly connected with positioning plates 17, and multiple positioning plates 17 are all engaged in the inside of the connecting ring 1 3;

[0035] Specifically, the provision of the insert block 7 can facilitate the workers to install the connecting strip 6, so that the workers can position the connecting strip 6 when installing the connecting strip 6; the provision of the positioning plate 17 can facilitate the workers to position the connecting ring 1 3 and the connecting ring 2 4 when fitting the connecting ring 1 3 with the connecting ring 2 4.

[0036] Reference Figure 2 and Figure 3 The upper and lower sides of one end shell 5 are connected with a liquid inlet pipe 11 and a liquid discharge pipe 13 respectively, the upper side of one end of the tube shell 1 is connected with a liquid inlet pipe 2 12, and the lower side of the other end of the tube shell 1 is connected with a liquid discharge pipe 2 14; the middle part of the two end shells 5 is fixedly connected with a partition plate 18;

[0037] Specifically, the partition 18 can separate the incoming liquid and the outgoing liquid, the liquid to be cooled can be injected through the inlet pipe 11, and the cooled liquid will be discharged through the discharge pipe 13, the liquid for cooling can be injected through the inlet pipe 2 12, and the liquid after heat exchange will be discharged through the discharge pipe 2 14.

[0038] Working principle: In actual use, the connecting ring 2 4 fixed on the end shell 5 can be fitted with the connecting ring 1 3, and the arc plate 10 can be driven to approach or move away at the same time through the two connected moving plates 9 by rotating the bidirectional screw 8. When the two arc plates 10 are close to each other at the same time, the installation rod 16 can be driven to be inserted into the connecting ring 1 3 and the connecting ring 2 4 respectively, so that the end shell 5 and the tube shell 1 can be fixed, thereby achieving the effect of facilitating the assembly and disassembly of the end shell 5 and the tube shell 1; in addition, by pulling the pull rod 204, the connecting plate 205 can be driven to move and the spring 207 can be compressed. The clamping block 208 can be retracted so that the clamping block 208 can be pulled out from the mounting block 203, and then the connecting shell 201 can be pulled out, so that the staff can inspect the inside of the tube shell 1. When the inspection is completed, the connecting shell 201 can be clamped on the tube shell 1. At this time, the mounting block 203 will be clamped in the fixing block 202, and under the action of the spring 207, the clamping block 208 can be clamped in the mounting block 203 for limiting, so that the connecting shell 201 can be fixed, thereby achieving the effect of facilitating the assembly and disassembly of the connecting shell 201 to facilitate the inspection and maintenance of the inside of the tube shell 1.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shell and tube type silicon carbide heat exchanger comprising a shell and tube (1), Features: The front side of the tube shell (1) is provided with an assembly and disassembly mechanism (2); the outer peripheries of both ends of the tube shell (1) are fixedly connected with a connection ring 1 (3); the two connecting rings 1 (3) are attached to the opposite sides thereof; the inner walls of the two connecting rings 2 (4) are fixedly connected with an end shell (5); the front and rear sides of the two connecting rings 1 (3) and the connecting ring 2 (4) are provided with connection bars (6); the ends of the connecting bars (6) on both sides are rotatably connected with bidirectional screws (8); one end of a plurality of bidirectional screws (8) penetrates into the connecting bars (6); the two ends of the plurality of bidirectional screws (8) are threadedly connected with a movable plate (9); the adjacent ends of the movable plates (9) on the front and rear sides are fixedly connected with an arc plate (10); the adjacent sides of the plurality of groups of arc plates (10) are fixedly connected with a plurality of mounting rods (16); the plurality of mounting rods (16) are respectively engaged in the connection ring 1 (3) and the connection ring 2 (4).

2. The shell-and-tube silicon carbide heat exchanger according to claim 1, Features: The assembly and disassembly mechanism (2) comprises a connecting shell (201), the connecting shell (201) being engaged with the front part of the tube shell (1), the upper and lower parts of the front side of the tube shell (1) being fixedly connected with fixing blocks (202), the upper and lower walls of the connecting shell (201) being fixedly connected with mounting blocks (203), the two mounting blocks (203) being engaged with the fixing blocks (202), the two fixing blocks (202) having their respective sides extending away from each other being penetrated by pull rods (204), the two pulling rods (204) having their respective ends fixedly connected with connecting plates (205), the front and rear parts of the two connecting plates (205) having their respective ends extending away from each other being fixedly connected with one end of a spring (207), the other ends of the plurality of springs (207) being fixedly connected to the inner wall of the fixing block (202), the two connecting plates (205) having their respective sides extending away from each other being fixedly connected with clamping blocks (208), the two clamping blocks (208) being penetrated into the mounting blocks (203).

3. The shell-and-tube silicon carbide heat exchanger according to claim 1, Features: Insert blocks (7) are fixedly connected to the middle parts of the adjacent sides of the front and rear connecting strips (6), and a plurality of the insert blocks (7) are all engaged in the first connecting ring (3) and the second connecting ring (4).

4. The shell-and-tube silicon carbide heat exchanger according to claim 1, Features: The front and rear parts of the adjacent sides of the two connecting rings 2 (4) are fixedly connected with positioning plates (17), and the plurality of positioning plates (17) are all engaged inside the connecting ring 1 (3).

5. The shell-and-tube silicon carbide heat exchanger according to claim 1, Features: Limit rods (15) are provided on the adjacent sides of the front and rear bidirectional screw rods (8), and both ends of the plurality of limit rods (15) penetrate the movable plate (9) and are fixedly connected to the inner wall of the connecting strip (6).

6. The shell-and-tube silicon carbide heat exchanger according to claim 1, Features: The upper and lower sides of the end shell (5) on one side are respectively connected to a liquid inlet pipe 1 (11) and a liquid discharge pipe 1 (13); the upper side of one end of the tube shell (1) is connected to a liquid inlet pipe 2 (12); and the lower side of the other end of the tube shell (1) is connected to a liquid discharge pipe 2 (14).

7. The shell-and-tube silicon carbide heat exchanger according to claim 1, Features: A partition plate (18) is fixedly connected to the middle of each of the two end shells (5).

8. The shell-and-tube silicon carbide heat exchanger according to claim 2, Features: Guide rods (206) are passed through the front and rear sides of the two connecting plates (205), and the upper and lower ends of the plurality of guide rods (206) are fixedly connected to the inner wall of the fixing block (202).

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