Silicon carbide heat exchanger with self-locking sealing structure

Abstract

The utility model discloses a silicon carbide heat exchanger with a self-locking sealing structure, which relates to the technical field of silicon carbide heat exchangers and comprises a shell of the heat exchanger and tube boxes respectively mounted at two ends of the shell through bolts. Sealing pieces are installed at the two ends of the tube box and the two ends of the shell correspondingly, fixing grooves are formed in one side of the tube box and the two ends of the shell correspondingly, pushing pieces used for extruding the sealing pieces are installed on the inner sides of the fixing grooves, and self-locking pieces used for increasing the attaching degree are installed between the sealing pieces. The gap between the tube box and the shell is sealed through the sealing piece, the pushing piece in the fixing groove can extrude the sealing piece to be tightly attached, meanwhile, the contact position of the sealing piece is locked and fixed through the sealing piece, the attaching degree of the sealing piece is increased, and the phenomenon that the sealing piece is deformed due to thermal expansion and cold contraction to generate the gap is avoided.

Description

Technical Field

[0001] This utility model relates to the field of silicon carbide heat exchanger technology, specifically to a silicon carbide heat exchanger with a self-locking sealing structure. Background Technology

[0002] Silicon carbide heat exchangers are a new type of heat exchanger that uses silicon carbide ceramic materials as the heat transfer medium. Due to the excellent properties of silicon carbide ceramics, such as corrosion resistance, high temperature resistance, high thermal conductivity, high hardness, and wear resistance, silicon carbide ceramic heat exchangers are suitable for use in high-temperature and corrosion-resistant environments.

[0003] Currently, when the gasket is used for sealing, it can ensure that the medium does not leak and can ensure normal operation. However, once the gasket is damaged and needs to be replaced, the long-term tightening makes it difficult to disassemble the parts, which leads to disassembly difficulties and may damage other parts during the disassembly process.

[0004] The prior art proposes a Chinese patent with publication number CN218155723U to solve the above-mentioned technical problems. The technical solution disclosed in this patent document is as follows: a sealing structure for a heat exchanger, wherein an arc-shaped block is fixedly connected to the outer surface of the tube body, and equidistantly arranged cylindrical blocks are fixedly connected to the outer surface of the tube body. A fixing block is fixedly connected to the outer surface of the cylindrical blocks, a first screw hole is opened on the outer surface of the fixing block, and a water inlet hole is opened on the outer surface of the cylindrical blocks. The sealing structure adopted by this utility model can fix and seal the position of the cold water inlet and outlet of the heat exchanger, perfectly blocking the gap at the interface of the heat exchanger, thereby achieving a seal for the heat exchanger. Furthermore, by setting a fixing mechanism, the heat exchanger can be connected and fixed to the water pipe, and the heat exchanger can be quickly disassembled.

[0005] However, there are still cases where the seal is not tight enough, resulting in poor sealing effect. Furthermore, the spliced ​​sealing structure cannot be self-locking and fixed. Uneven heating of the sealing structure creates gaps, causing leakage at the splice points at both ends of the heat exchanger, which affects the sealing effect and normal use of the heat exchanger. Utility Model Content

[0006] The purpose of this invention is to provide a silicon carbide heat exchanger with a self-locking sealing structure to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A silicon carbide heat exchanger with a self-locking sealing structure includes a heat exchanger shell and tube boxes that are bolted to both ends of the shell. Sealing elements are installed on both ends of the tube boxes and the shell. Fixing grooves are provided on one side of the tube boxes and both ends of the shell. Pushing elements for squeezing the sealing elements are installed inside the fixing grooves. Self-locking elements for increasing the fit are installed between the sealing elements.

[0009] In the above technical solution, the gaps between the two ends of the shell and the two pipe boxes are sealed by multiple sealing components, and the cross section of the fixing groove is U-shaped.

[0010] A further improvement of the present invention is that the sealing element includes a first sealing gasket respectively attached to both ends of the housing, a second sealing gasket attached to one side of the tube box, a sealing ring placed between the first sealing gasket and the second sealing gasket, the first sealing gasket having a plurality of uniformly arranged grooves, and the second sealing gasket having a plurality of uniformly arranged protrusions extending from one side.

[0011] In the above technical solution, both the first and second sealing gaskets are annular, with the sealing ring embedded between the first and second sealing gaskets. The cross-sections of the protrusion and the groove are both isosceles trapezoids.

[0012] A further improvement of the present invention is that the self-locking component includes an extension ring fixedly connected to one side of the second sealing gasket, and the outer surface of the extension ring is fixedly connected with a plurality of evenly arranged locking teeth, and the inner ring of the first sealing gasket is provided with a plurality of evenly arranged anti-reverse grooves.

[0013] In the above technical solution, both the locking teeth and the support groove have right-angled triangular cross sections.

[0014] A further improvement of the present invention is that the pushing member includes an elastic frame fixedly connected to the inner wall of the fixed groove, and a pushing ring is fixedly connected to the other side of the elastic frame. The pushing ring is slidably connected to the fixed groove and does not detach.

[0015] In the above technical solution, the cross-section of the push ring is convex, and the fixing groove limits the push ring to prevent it from detaching from the fixing groove.

[0016] A further improvement of this utility model is that: the other side of the first sealing gasket and the other side of the second sealing gasket both extend into an interlocking portion, and multiple circumferentially arranged fixing strips are fixedly connected to both ends of the housing and one side of the tube box, and the fixing strips are inserted into the interlocking portion.

[0017] The above technical solution has an I-shaped cross-section for the fixing strip, and a space is provided on one side of the fitting part to allow the fixing strip to enter, thereby increasing the contact area between the fitting part and the fixing strip.

[0018] A further improvement of the present invention is that: a sealing portion extends from the inner edge of the first sealing gasket, and an adhesive portion extends from the inner edge of the second sealing gasket, wherein the adhesive portion and the sealing portion are misaligned and spliced.

[0019] In the above technical solution, the sealing part is inserted between the fitting part and the second sealing gasket.

[0020] A further improvement of this utility model is that: a plurality of uniformly arranged support rings are fixedly connected to the inner side of the elastic frame, and the support rings include two arc-shaped plates.

[0021] In the above technical solution, the two arc-shaped plates are fixedly connected, and the two arc-shaped plates are fixedly connected to the support ring.

[0022] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0023] 1. This utility model provides a silicon carbide heat exchanger with a self-locking sealing structure. The tube box and the shell are installed and fixed at both ends by multiple bolts. The gap between the tube box and the shell is sealed by a sealing element. The pusher in the fixing groove can squeeze the sealing element to fit tightly. At the same time, the contact position of the sealing element is locked and fixed by the sealing element, which increases the degree of sealing fit and avoids the sealing element from deforming and causing gaps due to thermal expansion and contraction.

[0024] 2. This utility model provides a silicon carbide heat exchanger with a self-locking sealing structure. When the tube box and the shell are spliced ​​and installed, the first sealing gasket and the second sealing gasket are pressed and tightly fitted. At the same time, the protrusion is embedded in the groove to increase the contact area between the first sealing gasket and the second sealing gasket. The sealing ring can seal the gap between the first sealing gasket and the second sealing gasket again. The sealing ring can undergo a certain degree of deformation, which effectively avoids the gap caused by the deformation of the first sealing gasket and the second sealing gasket, thus preventing the sealing effect from decreasing.

[0025] 3. This utility model provides a silicon carbide heat exchanger with a self-locking sealing structure. When the second sealing gasket is attached to the first sealing gasket, the extension ring is inserted into the inner side of the first sealing gasket. At the same time, multiple locking teeth on the outer surface of the extension ring are inserted into the anti-reverse groove to lock and fix the first sealing gasket and the second sealing gasket. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0028] Figure 2This is a three-dimensional sectional view of the left side of this utility model;

[0029] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0030] Figure 4 For the present utility model Figure 3 Enlarged view at point B in the middle;

[0031] Figure 5 For the present utility model Figure 3 Enlarged view at point C;

[0032] Figure 6 This is a structural schematic diagram of the central tube box, fixing groove, and fixing strip of this utility model;

[0033] Figure 7 This is a schematic diagram of the structure of the first sealing gasket, the second sealing gasket, the sealing ring, and the fitting part in this utility model;

[0034] In the figure: 1. Shell; 2. Tube box; 3. Fixing groove; 4. First sealing gasket; 5. Second sealing gasket; 6. Sealing ring; 7. Groove; 8. Protrusion; 9. Extension ring; 10. Locking tooth; 11. Anti-reverse groove; 12. Elastic frame; 13. Pushing ring; 14. Fitting part; 15. Fixing strip; 16. Sealing part; 17. Fitting part; 18. Support ring. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to embodiments:

[0036] Example 1

[0037] like Figure 1-7 As shown, this utility model provides a silicon carbide heat exchanger with a self-locking sealing structure, including a heat exchanger shell 1 and tube boxes 2 which are respectively installed at both ends of the shell 1 by bolts; sealing elements are respectively installed at both ends of the tube boxes 2 and the shell 1, and fixing grooves 3 are provided on one side of the tube boxes 2 and both ends of the shell 1. Pushing elements for squeezing the sealing elements are installed inside the fixing grooves 3, and self-locking elements for increasing the fit are installed between the sealing elements.

[0038] In this embodiment, the pipe box 2 and the housing 1 are installed and fixed at both ends by multiple bolts. The gap between the pipe box 2 and the housing 1 is sealed by a sealing element. The pusher in the fixing groove 3 can squeeze the sealing element to fit tightly. At the same time, the contact position of the sealing element is locked and fixed by the sealing element, which increases the degree of sealing fit and avoids the sealing element from deforming and causing gaps due to thermal expansion and contraction.

[0039] Example 2

[0040] like Figure 1-7As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the sealing element includes a first sealing gasket 4 respectively attached to both ends of the housing 1, a second sealing gasket 5 attached to one side of the tube box 2, a sealing ring 6 placed between the first sealing gasket 4 and the second sealing gasket 5, the first sealing gasket 4 having a plurality of uniformly arranged grooves 7, the second sealing gasket 5 having a plurality of uniformly arranged protrusions 8 extending from one side, and fitting portions 14 extending from the other side of both the first sealing gasket 4 and the second sealing gasket 5, and a plurality of circumferentially arranged fixing strips 15 fixedly connected to both ends of the housing 1 and one side of the tube box 2, the fixing strips 15 being inserted into and engaged with the fitting portions 14, a sealing portion 16 extending from the inner edge of the first sealing gasket 4, and a fitting portion 17 extending from the inner edge of the second sealing gasket 5, the fitting portion 17 and the sealing portion 16 being misaligned and spliced.

[0041] In this embodiment, when the pipe box 2 is spliced ​​and installed with the shell 1, the first sealing gasket 4 and the second sealing gasket 5 are pressed and tightly fitted together. At the same time, the protrusion 8 is embedded in the groove 7 to increase the contact area between the first sealing gasket 4 and the second sealing gasket 5. The sealing ring 6 can seal the gap between the first sealing gasket 4 and the second sealing gasket 5 again. The sealing ring 6 can undergo a certain degree of deformation, which effectively avoids the gap caused by the deformation of the first sealing gasket 4 and the second sealing gasket 5, resulting in a decrease in the sealing effect.

[0042] As should be added, the fixing strip 15 is inserted into the fitting part 14 to limit and fix the first sealing gasket 4 and the second sealing gasket 5, thereby increasing the contact area and tightness of the first sealing gasket 4 and the second sealing gasket 5 with the ends of the housing 1 and the tube box 2 respectively, and preventing the fitting part 14 from loosening and affecting the sealing effect.

[0043] Furthermore, when the sealing part 16 is inserted into the fitting part 17, it can seal the gap between the first sealing gasket 4 and the second sealing gasket 5. The fitting part 17 can clamp and fix the sealing part 16 to prevent the sealing part 16 from shifting or falling off.

[0044] Example 3

[0045] like Figure 1-7 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, the self-locking component includes an extension ring 9 fixedly connected to one side of the second sealing gasket 5, and a plurality of evenly arranged locking teeth 10 are fixedly connected to the outer surface of the extension ring 9, and a plurality of evenly arranged anti-reverse grooves 11 are opened in the inner ring of the first sealing gasket 4.

[0046] In this embodiment, when the second sealing gasket 5 is attached to the first sealing gasket 4, the extension ring 9 is inserted into the inner side of the first sealing gasket 4, and at the same time, the multiple locking teeth 10 on the outer surface of the extension ring 9 are inserted into the anti-reverse groove 11 to lock and fix the first sealing gasket 4 and the second sealing gasket 5.

[0047] Example 4

[0048] like Figure 1-7 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, the pushing member includes an elastic frame 12 fixedly connected to the inner wall of the fixed groove 3, a pushing ring 13 fixedly connected to the other side of the elastic frame 12, and a plurality of evenly arranged support rings 18 fixedly connected to the inner side of the elastic frame 12. The support ring 18 includes two arc-shaped plates, and the pushing ring 13 is slidably connected to the fixed groove 3 without detaching.

[0049] In this embodiment, the elastic frame 12 in the fixing groove 3 can support the pushing ring 13, while the support ring 18 supports the elastic frame 12. Then, the two pushing rings 13 respectively squeeze and push the first sealing gasket 4 and the second sealing gasket 5, so that the first sealing gasket 4 and the second sealing gasket 5 can fit tightly together.

[0050] The working principle of this silicon carbide heat exchanger with a self-locking sealing structure will be explained in detail below.

[0051] like Figure 1-7 As shown, firstly, the first sealing gasket 4 and the second sealing gasket 5 are placed at both ends of the housing 1 and one side of the tube box 2, respectively. At the same time, the fixing strip 15 is inserted into the fitting part 14, and the first sealing gasket 4 and the second sealing gasket 5 are spliced ​​and fitted together. Then, the sealing ring 6 is inserted between the first sealing gasket 4 and the second sealing gasket 5. Then, the sealing part 16 is inserted into the inside of the fitting part 17, and at the same time, the extension ring 9 is inserted into the inside of the first sealing gasket 4. At the same time, the multiple locking teeth 10 on the outer surface of the extension ring 9 are inserted into the anti-reverse groove 11 to lock and fix the first sealing gasket 4 and the second sealing gasket 5. Then, the housing 1 and the tube box 2 are spliced ​​and clamped together by bolts. At the same time, the elastic frame 12 in the fixing groove 3 supports the pushing ring 13. Then, the support ring 18 supports the elastic frame 12. Then, the two pushing rings 13 respectively squeeze and push the first sealing gasket 4 and the second sealing gasket 5.

[0052] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A silicon carbide heat exchanger with self-locking sealing structure, comprising a heat exchanger shell (1) and tube boxes (2) mounted on both ends of the shell (1) by bolts respectively; characterized in that: The pipe box (2) and the shell (1) are respectively equipped with sealing elements at both ends. The pipe box (2) and the shell (1) are provided with fixing grooves (3) on one side and at both ends. The fixing grooves (3) are equipped with pushers for squeezing the sealing elements. The sealing elements are equipped with self-locking elements to increase the fit.

2. The silicon carbide heat exchanger with self-locking sealing structure according to claim 1, characterized in that: The sealing element includes a first sealing gasket (4) respectively attached to both ends of the housing (1), a second sealing gasket (5) attached to one side of the tube box (2), a sealing ring (6) placed between the first sealing gasket (4) and the second sealing gasket (5), the first sealing gasket (4) having a plurality of evenly arranged grooves (7), and the second sealing gasket (5) having a plurality of evenly arranged protrusions (8) extending from one side.

3. The silicon carbide heat exchanger with self-locking sealing structure according to claim 2, characterized in that: The self-locking component includes an extension ring (9) fixedly connected to one side of the second sealing gasket (5). The outer surface of the extension ring (9) is fixedly connected with a plurality of evenly arranged locking teeth (10). The inner ring of the first sealing gasket (4) is provided with a plurality of evenly arranged anti-reverse grooves (11).

4. The silicon carbide heat exchanger having a self-locking sealing structure according to claim 3, characterized in that: The pusher includes an elastic frame (12) fixedly connected to the inner wall of the fixed groove (3), and a push ring (13) fixedly connected to the other side of the elastic frame (12). The push ring (13) is slidably connected to the fixed groove (3) and does not detach.

5. The silicon carbide heat exchanger having a self-sealing structure according to claim 4, characterized in that: The first sealing gasket (4) and the second sealing gasket (5) both have an interlocking part (14) extending from the other side. Both ends of the housing (1) and one side of the tube box (2) are fixedly connected with a plurality of circumferentially arranged fixing strips (15). The fixing strips (15) are inserted into the interlocking part (14).

6. The silicon carbide heat exchanger having a self-sealing structure according to claim 3, characterized in that: The first sealing gasket (4) has a sealing part (16) extending from the inner edge of the inner ring, and the second sealing gasket (5) has a fitting part (17) extending from the inner edge of the inner ring. The fitting part (17) and the sealing part (16) are misaligned and spliced ​​together.

7. The silicon carbide heat exchanger having a self-sealing structure according to claim 5, characterized in that: The elastic frame (12) has a plurality of uniformly arranged support rings (18) fixedly connected to its inner side, and the support rings (18) include two arc-shaped plates.

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