Connecting pipe assembly structure of waste heat recovery plate heat exchanger

Abstract

The utility model relates to the technical field of plate heat exchangers, discloses a connecting pipe assembly structure of a waste heat recovery plate heat exchanger, and solves the problem that the connecting pipe of the plate heat exchanger is insufficient in sealing performance. Through the installation ring A, the installation ring B, the spring A, the spring B and the limiting block, the fixing block is pulled towards the direction of the heat exchanger body, the spring A extends accordingly, then the installation ring B on the outer surface of the outer connecting pipe is aligned with the installation ring A on the outer surface of the water inlet pipe, the fixing block is loosened, the spring A resets, and therefore the water inlet pipe and the outer connecting pipe can be rapidly installed together. A spring B and a limiting block are arranged on the outer surface of the mounting ring B, so that when the fixing block moves, the spring B is firstly extruded, then the limiting block is embedded and connected into a limiting groove, rapid locking is achieved, the mounting stability is further improved, and meanwhile, the sealing performance and firmness of the assembly component are improved due to the fact that the limiting block has the thermal expansion performance.

Description

Technical Field

[0001] The utility model relates to the technical field of plate heat exchangers, in particular to a pipe assembly structure of a waste heat recovery plate heat exchanger. Background Art

[0002] A plate heat exchanger is a highly efficient heat exchanger composed of a series of stacked, corrugated metal sheets. Thin rectangular channels are formed between the plates, through which heat is exchanged. Furthermore, this waste heat recovery plate heat exchanger is often used to recover and utilize waste heat generated in industrial processes, thereby improving energy efficiency and reducing energy consumption.

[0003] Existing waste heat recovery plate heat exchangers are usually connected to external pipes through flanges. However, since the plate collector is exposed to high-temperature exhaust gas waste heat for a long time, and the heat resistance of traditional flange connections is limited, the gaskets at the flange connections are prone to aging or deformation, resulting in a decrease in sealing performance. In addition, due to the thermal expansion and contraction effects, small gaps may appear at the flange connections, causing leakage. Utility Model Content

[0004] The purpose of the utility model is to provide a pipe assembly structure for a waste heat recovery plate heat exchanger. The device is used to work, thereby solving the problem of insufficient sealing of the pipes of the existing plate heat exchanger.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a pipe assembly structure for a waste heat recovery plate heat exchanger, comprising a heat exchanger body, wherein the heat exchanger body comprises an inlet pipe and an outlet pipe, wherein one end of the inlet pipe and the outlet pipe are respectively provided with an external pipe, and an assembly component for increasing the sealing performance of the connection is provided between the inlet pipe and the outlet pipe and the external pipe;

[0006] The assembly component includes a mounting ring A fixedly mounted on the outer surface of the water inlet pipe, and a mounting ring B fixedly mounted on the outer surface of the external pipe. A groove A is provided on one side of the mounting ring A, a spring A is fixedly mounted on the inner wall of the groove A, a connecting block is fixedly mounted on the upper end of the spring A, a fixed block is fixedly mounted on one side of the connecting block, the inner side of the fixed block is in contact with the outer surfaces of the mounting ring A and the mounting ring B, a groove B is provided on the outer surface of the mounting ring B, a spring B is fixedly mounted on the inner wall of the groove B, a limit block is fixedly mounted on the inner wall of the spring B, a limit groove is provided on the inner side of the fixed block, the limit block is engaged with the inside of the limit groove, and the limit block is a component made of thermoplastic polyurethane.

[0007] Furthermore, a movable rod is provided inside the limiting groove, and pressure blocks are provided at both ends of the movable rod. One group of the pressure blocks is located inside the limiting groove, and the bottom of the pressure blocks in this group is in contact with the upper surface of the limiting block. The bottom of the other group of pressure blocks is provided with a spring C, and one end of the spring C is fixedly connected to the outer surface of the fixed block.

[0008] Furthermore, the inner wall of the fixing block is provided with a sealing layer, which is a component made of silicone rubber.

[0009] Furthermore, a waterproof layer is provided on the outer surface of the sealing layer, and the waterproof layer is a component made of polytetrafluoroethylene.

[0010] Furthermore, the outer surface of the waterproof layer is provided with a high temperature resistant layer, and the high temperature resistant layer is a component made of ceramic fiber.

[0011] Furthermore, one side of the mounting ring A and the mounting ring B is provided with an annular groove, the inner wall of the annular groove is provided with a magnetic ring, and the mounting ring A and the mounting ring B are magnetically connected.

[0012] Furthermore, a sealing gasket is provided on one side of the mounting ring A and the mounting ring B.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] The utility model proposes a pipe assembly structure for a waste heat recovery plate heat exchanger. The sealing performance of the pipes of the plate heat exchanger in the prior art is insufficient. However, the utility model uses the mounting ring A, mounting ring B, spring A, spring B and limit block to first pull the fixed block toward the direction of the heat exchanger body, and the spring A is then extended. Then the mounting ring B on the outer surface of the external pipe is aligned with the mounting ring A on the outer surface of the water inlet pipe, and then the fixing block is released, and the spring A is reset, so that the water inlet pipe and the external pipe can be quickly installed together. Because the outer surface of the mounting ring B is provided with a spring B and a limit block, the fixed block will first squeeze the spring B when moving, and then the limit block will be engaged and connected to the limit groove to achieve rapid locking, further increasing the stability of the installation. At the same time, because the limit block has the performance of thermal expansion, the sealing and firmness of the assembly component are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the assembly components of the present utility model;

[0017] Figure 3 This is a cross-sectional view of the connection between the external pipe and the mounting ring B of the utility model;

[0018] Figure 4This is a cross-sectional view of the connection between the water inlet pipe and the mounting ring A of the present invention;

[0019] Figure 5 This is a cross-sectional view of the fixing block of the present utility model.

[0020] In the figure: 1. Heat exchanger body; 11. Water inlet pipe; 12. Water outlet pipe; 2. External pipe; 3. Assembly component; 31. Mounting ring A; 32. Mounting ring B; 33. Groove A; 34. Spring A; 35. Connecting block; 36. Fixing block; 361. Limiting groove; 37. Groove B; 38. Spring B; 39. Limiting block; 4. Movable rod; 41. Pressing block; 42. Spring C; 5. Sealing layer; 6. Waterproof layer; 7. High temperature resistant layer; 8. Magnetic ring; 9. Sealing gasket. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0023] Combine Figure 1 A pipe assembly structure of a waste heat recovery plate heat exchanger includes a heat exchanger body 1, which includes an inlet pipe 11 and an outlet pipe 12. An external pipe 2 is provided at one end of the inlet pipe 11 and the outlet pipe 12, and an assembly component 3 for increasing the connection sealing is provided between the inlet pipe 11 and the outlet pipe 12 and the external pipe 2.

[0024] The present invention will be further described below with reference to the embodiments.

[0025] Example 1:

[0026] See also Figure 1-Figure 5The assembly component 3 includes a mounting ring A31 fixedly mounted on the outer surface of the water inlet pipe 11, and a mounting ring B32 fixedly mounted on the outer surface of the external pipe 2. A groove A33 is provided on one side of the mounting ring A31, and a spring A34 is fixedly mounted on the inner wall of the groove A33. A connecting block 35 is fixedly mounted on the upper end of the spring A34. A fixing block 36 is fixedly mounted on one side of the connecting block 35. The inner side of the fixing block 36 contacts the outer surfaces of the mounting ring A31 and the mounting ring B32. A groove B37 is provided on the outer surface of the mounting ring B32, and a spring B38 is fixedly mounted on the inner wall of the groove B37. A limiting block 39 is fixedly mounted on the inner wall of the spring B38. A limiting groove 361 is provided on the inner side of the fixing block 36. The limiting block 39 is engaged with the inner part of the limiting groove 361. The limiting block 39 is a component made of thermoplastic polyurethane, which can achieve quick installation and locking and has high sealing performance.

[0027] A movable rod 4 is provided inside the limiting groove 361, and pressure blocks 41 are provided at both ends of the movable rod 4. One group of pressure blocks 41 is located inside the limiting groove 361, and the bottom of this group of pressure blocks 41 contacts the upper surface of the limiting block 39. A spring C42 is provided at the bottom of the other group of pressure blocks 41, and one end of the spring C42 is fixedly connected to the outer surface of the fixed block 36. By pressing the pressure block 41 on the outer surface of the fixed block 36, the limiting block 39 is pushed out of the limiting groove 361, thereby facilitating quick unlocking.

[0028] The inner wall of the fixing block 36 is provided with a sealing layer 5 . The sealing layer 5 is a component made of silicone rubber. The silicone rubber also has the property of expanding when heated, thereby improving the sealing performance of the fixing block 36 .

[0029] The outer surface of the sealing layer 5 is provided with a waterproof layer 6, which is a component made of polytetrafluoroethylene, so that it has good waterproof performance and is not easy to age and deteriorate.

[0030] The outer surface of the waterproof layer 6 is provided with a high temperature resistant layer 7, which is a component made of ceramic fiber to avoid deformation caused by high temperature.

[0031] An annular groove is provided on one side of the mounting ring A31 and the mounting ring B32, and a magnetic ring 8 is provided on the inner wall of the annular groove. The mounting ring A31 is magnetically connected to the mounting ring B32, which increases the connection stability between the water inlet pipe 11 and the water outlet pipe 12 and the external pipe 2 respectively, and can achieve quick installation.

[0032] A sealing gasket 9 is provided on one side of the mounting ring A31 and the mounting ring B32 to increase the sealing performance between the water inlet pipe 11 and the water outlet pipe 12 and the external pipe 2 respectively.

[0033] Specifically, taking the connection method between the water inlet pipe 11 and the external pipe 2 as an example, the connection method between the water outlet pipe 12 and the external pipe 2 is the same. Therefore, the fixing block 36 is first pulled toward the direction of the heat exchanger body 1, and the spring A34 is extended accordingly. Then, the mounting ring B32 on the outer surface of the external pipe 2 is aligned with the mounting ring A31 on the outer surface of the water inlet pipe 11, and the mounting ring A31 is magnetically connected to the mounting ring B32. Then, the fixing block 36 is released, and the spring A34 is reset, so that the water inlet pipe 11 and the external pipe 2 can be quickly installed together. Because a sealing gasket 9 is provided on one side of the mounting ring A31 and the mounting ring B32, the sealing between the water inlet pipe 11 and the external pipe 2 can be increased. Because the outer surface of the mounting ring B32 is provided with a spring B38 and a limit block 39, when the fixing block 36 moves, it will first squeeze the spring B38, and then the limit The block 39 is embedded in the limit groove 361 to achieve quick locking, further increasing the stability of the installation. At the same time, because the limit block 39 is a component made of thermoplastic polyurethane, the limit block 39 will expand when the temperature at the connection rises, thereby improving the sealing performance by filling the limit groove 361, and maintaining good resilience to ensure that the limit block 39 can still return to its original shape after cooling. In addition, since the inner wall of the fixed block 36 is provided with a sealing layer 5 made of silicone rubber, the outer surface of the sealing layer 5 is provided with a waterproof layer 6 made of polytetrafluoroethylene, and the outer surface of the waterproof layer 6 is provided with a high-temperature resistant layer 7 made of ceramic fiber, it can be ensured that the innermost layer has the best high-temperature resistance when directly in contact with the high-temperature fluid, and the outermost layer provides a good sealing effect, thereby extending the service life of the fixed block 36.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe assembly structure for a waste heat recovery plate heat exchanger, comprising a heat exchanger body (1), characterized in that: The heat exchanger body (1) comprises a water inlet pipe (11) and a water outlet pipe (12), one end of the water inlet pipe (11) and the water outlet pipe (12) are respectively provided with an external pipe (2), and an assembly component (3) for increasing the sealing performance of the connection is respectively provided between the water inlet pipe (11) and the water outlet pipe (12) and the external pipe (2); The assembly component (3) includes a mounting ring A (31) fixedly mounted on the outer surface of the water inlet pipe (11), and a mounting ring B (32) fixedly mounted on the outer surface of the external pipe (2). A groove A (33) is provided on one side of the mounting ring A (31). A spring A (34) is fixedly mounted on the inner wall of the groove A (33). A connecting block (35) is fixedly mounted on the upper end of the spring A (34). A fixing block (36) is fixedly mounted on one side of the connecting block (35). The inner side of the fixing block (36) is fixedly mounted. The mounting ring (36) is in contact with the outer surfaces of the mounting ring A (31) and the mounting ring B (32). The outer surface of the mounting ring B (32) is provided with a groove B (37). The inner wall of the groove B (37) is fixedly installed with a spring B (38). The inner wall of the spring B (38) is fixedly installed with a limit block (39). The inner side of the fixed block (36) is provided with a limit groove (361). The limit block (39) is engaged with the inner part of the limit groove (361). The limit block (39) is a component made of thermoplastic polyurethane.

2. The pipe assembly structure of a waste heat recovery plate heat exchanger according to claim 1, characterized in that: A movable rod (4) is provided inside the limiting groove (361), and pressure blocks (41) are provided at both ends of the movable rod (4). One group of the pressure blocks (41) is located inside the limiting groove (361), and the bottom of the pressure blocks (41) of this group is in contact with the upper surface of the limiting block (39). A spring C (42) is provided at the bottom of the other group of the pressure blocks (41), and one end of the spring C (42) is fixedly connected to the outer surface of the fixed block (36).

3. The pipe assembly structure of a waste heat recovery plate heat exchanger according to claim 1, characterized in that: The inner wall of the fixing block (36) is provided with a sealing layer (5), and the sealing layer (5) is a component made of silicone rubber.

4. The pipe assembly structure of the waste heat recovery plate heat exchanger according to claim 3, characterized in that: The outer surface of the sealing layer (5) is provided with a waterproof layer (6), and the waterproof layer (6) is a component made of polytetrafluoroethylene.

5. The pipe assembly structure of the waste heat recovery plate heat exchanger according to claim 4, characterized in that: The outer surface of the waterproof layer (6) is provided with a high-temperature resistant layer (7), and the high-temperature resistant layer (7) is a component made of ceramic fiber.

6. The pipe assembly structure of a waste heat recovery plate heat exchanger according to claim 1, characterized in that: An annular groove is provided on one side of the mounting ring A (31) and the mounting ring B (32), and a magnetic ring (8) is provided on the inner wall of the annular groove. The mounting ring A (31) is magnetically connected to the mounting ring B (32).

7. The pipe assembly structure of a waste heat recovery plate heat exchanger according to claim 1, characterized in that: A sealing gasket (9) is provided on one side of each of the mounting ring A (31) and the mounting ring B (32).

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