Flange structure of heat exchanger

Abstract

The utility model discloses a heat exchanger flange structure which comprises a first connecting pipe, a first flange, a second connecting pipe, a second flange and a sealing structure, the first flange is fixed at one end of the first connecting pipe, the second flange is fixed at one end of the second connecting pipe, and the sealing structure is arranged between the first flange and the second flange. A plurality of fixing holes are formed in the first flange and the second flange in a circular array mode, fixing bolts are arranged on the fixing holes, and protective layers are arranged on the outer wall of the first connecting pipe and the outer wall of the second connecting pipe. The sealing performance is greatly improved, leakage is prevented, the corrosion resistance of the connecting pipe is greatly improved by arranging the waterproof layer, the corrosion-resistant layer and the hard steel plate bending-resistant layer, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger flange technology, and more specifically, to a heat exchanger flange structure. Background Technology

[0002] A heat exchanger is a device that transfers part of the heat from a hot fluid to a cold fluid. A flange, also called a flange plate or flange, is a part used to connect shafts to each other, used for connecting pipe ends; flanges are also used on the inlet and outlet of equipment for connecting two pieces of equipment.

[0003] According to announcement number CN219368508U, a flange structure for easy disassembly of a heat exchanger is disclosed, including an upper tube body and a lower tube body. An upper connecting flange is fixedly installed on the bottom surface of the upper tube body, and a lower connecting flange is fixedly installed on the upper panel of the lower tube body. Connecting devices are provided on the sides of the upper and lower connecting flanges. The connecting devices include a rotating unit and a fixing unit. The rotating unit includes a fixing block, a connecting rod, a compression spring, a pressure rod, and a locking block. The fixing unit includes an "L"-shaped fixing block, two connecting columns, and a fixing plate. This flange structure for easy disassembly of a heat exchanger stabilizes the connection by using the spring force of the compression spring to return the locking block to its fixed position after contact with the fixing plate in the connecting device, making the connection more secure. After the flange connection, the outer sealing ring and the inner sealing ring precisely match and are fixedly connected by the inner wall of the outer sealing ring and the outer surface of the inner sealing ring.

[0004] However, the above-mentioned heat exchanger flange structure has the following drawbacks:

[0005] Using only external and internal sealing rings for sealing results in poor sealing performance, which can easily lead to leakage. Furthermore, the connecting pipe is susceptible to corrosion and damage, reducing its service life.

[0006] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0007] In view of the problems in the related technologies, this utility model proposes a heat exchanger flange structure to overcome the above-mentioned technical problems existing in the existing related technologies.

[0008] Therefore, the specific technical solution adopted by this utility model is as follows:

[0009] A heat exchanger flange structure includes a first connecting pipe, a first flange, a second connecting pipe, a second flange, and a sealing structure. One end of the first connecting pipe is fixed with the first flange, and one end of the second connecting pipe is fixed with the second flange. A sealing structure is provided between the first flange and the second flange. Both the first flange and the second flange are provided with a plurality of fixing holes arranged in a circular array. Fixing bolts are provided in the fixing holes. A protective layer is provided on the outer wall of the first connecting pipe and the second connecting pipe.

[0010] As a further embodiment of this utility model, the interior of the first flange is provided with a placement groove for placing the sealing structure.

[0011] As a further embodiment of this invention, the second flange has a boss inside.

[0012] As a further embodiment of this invention, the length of the boss is greater than the depth of the placement groove.

[0013] As a further embodiment of this utility model, the sealing structure includes a first washer, a first spring washer, a sealing washer, a second spring washer, and a second washer.

[0014] As a further embodiment of this utility model, both the first gasket and the second gasket are made of stainless steel, and the sealing gasket is made of rubber.

[0015] As a further embodiment of this utility model, the protective layer is provided with a waterproof layer, a corrosion-resistant layer and a rigid steel plate anti-bending layer from the outside to the inside.

[0016] The beneficial effects of this utility model are as follows: by setting a placement groove inside the first flange and a boss inside the second flange, and cooperating with the sealing structure of the first gasket, the first spring gasket, the sealing gasket, the second spring gasket and the second gasket, the sealing performance is greatly improved and leakage is prevented. By setting a waterproof layer, a corrosion-resistant layer and a hard steel plate anti-bending layer, the corrosion resistance of the connecting pipe is greatly improved and the service life is extended. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a heat exchanger flange structure according to an embodiment of the present utility model;

[0019] Figure 2This is a side view of a heat exchanger flange structure according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the sealing structure of a heat exchanger flange structure according to an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the protective layer of a heat exchanger flange structure according to an embodiment of the present utility model.

[0022] In the picture:

[0023] 1. First connecting pipe; 2. First flange; 3. Second connecting pipe; 4. Second flange; 5. Sealing structure; 6. Fixing hole; 7. Protective layer; 8. Placement groove; 9. Boss; 10. First gasket; 11. First spring gasket; 12. Sealing gasket; 13. Second spring gasket; 14. Second gasket; 15. Waterproof layer; 16. Corrosion-resistant layer; 17. Hard steel plate bending-resistant layer. Detailed Implementation

[0024] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0025] According to an embodiment of the present invention, a heat exchanger flange structure is provided.

[0026] Please refer to the instruction manual appendix. Figure 1-4 According to an embodiment of the present invention, a heat exchanger flange structure includes a first connecting pipe 1, a first flange 2, a second connecting pipe 3, a second flange 4, and a sealing structure 5. One end of the first connecting pipe 1 is fixed to the first flange 2, and one end of the second connecting pipe 3 is fixed to the second flange 4. A sealing structure 5 is provided between the first flange 2 and the second flange 4. Both the first flange 2 and the second flange 4 are provided with a plurality of fixing holes 6 arranged in a circular array. Fixing bolts are provided on the fixing holes 6. A protective layer 7 is provided on the outer wall of the first connecting pipe 1 and the second connecting pipe 3. The first flange 2 has a placement groove 8 for placing the sealing structure 5. The second flange 4 has a boss 9 inside. The length of the boss 9 is greater than the depth of the placement groove 8. The sealing structure 5 includes a first gasket 10, a first spring gasket 11, a sealing gasket 12, a second spring gasket 13, and a second gasket 14. The first gasket 10 and the second gasket 14 are both made of stainless steel, and the sealing gasket 12 is made of rubber.

[0027] By setting a placement groove 8 inside the first flange 2 and a boss 9 inside the second flange 4, and cooperating with the sealing structure 5 consisting of the first gasket 10, the first spring gasket 11, the sealing gasket 12, the second spring gasket 13, and the second gasket 14, the sealing performance is greatly improved and leakage is prevented.

[0028] In one embodiment, please refer to the appendix to the specification. Figure 1 and 4 As a further embodiment of this utility model, the protective layer 7 is provided with a waterproof layer 15, a corrosion-resistant layer 16 and a rigid steel plate anti-bending layer 17 from the outside to the inside.

[0029] By setting up a waterproof layer 15, a corrosion-resistant layer 16, and a rigid steel plate bending-resistant layer 17, the corrosion resistance of the connecting pipe is greatly improved, and its service life is extended.

[0030] In use, firstly, the first washer 10, the first spring washer 11, the sealing washer 12, the second spring washer 13, and the second washer 14 are fitted onto the boss 9 inside the second flange 4. Then, the second flange 4 is aligned with the first flange 2. At this time, the sealing structure 5 is inside the placement groove 8 of the first flange 2. The inner ring of the sealing structure 5 is tightly fitted with the boss 9, and the outer ring of the sealing structure 5 is tightly fitted with the inner wall of the first flange 2. The excess part of the boss 9 is inserted into the first connecting pipe 1 and is tightly fitted with the inner wall of the first connecting pipe 1. Then, the two flanges are connected and fixed by using a fixing bolt through the fixing hole 6, which greatly improves the sealing performance and prevents leakage. The waterproof layer 15, the corrosion-resistant layer 16, and the hard steel plate bending-resistant layer 17 greatly improve the corrosion resistance of the connecting pipe and increase its service life.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A heat exchanger flange structure comprising a first connecting pipe (1), a first flange (2), a second connecting pipe (3), a second flange (4) and a sealing structure (5), characterized in that: One end of the first connecting pipe (1) is fixed with a first flange (2), one end of the second connecting pipe (3) is fixed with a second flange (4), a sealing structure (5) is arranged between the first flange (2) and the second flange (4), a plurality of fixing holes (6) are arranged in a circular array on the first flange (2) and the second flange (4), a fixing bolt is arranged on the fixing hole (6), and a protective layer (7) is arranged on the outer wall of the first connecting pipe (1) and the second connecting pipe (3).

2. The heat exchanger flange structure according to claim 1, characterized in that: The first flange (2) is internally provided with a placing groove (8) for placing the sealing structure (5).

3. The heat exchanger flange structure according to claim 2, characterized in that: The second flange (4) is internally provided with a boss (9).

4. The heat exchanger flange structure according to claim 3, characterized in that: The length of the boss (9) is greater than the depth of the placing groove (8).

5. The heat exchanger flange structure according to claim 1, characterized in that: The sealing structure (5) comprises a first gasket (10), a first spring washer (11), a sealing gasket (12), a second spring washer (13) and a second gasket (14).

6. The heat exchanger flange structure according to claim 5, characterized in that: The first gasket (10) and the second gasket (14) are made of stainless steel, and the sealing gasket (12) is made of rubber.

7. The heat exchanger flange structure according to claim 1, characterized by: The protective layer (7) is sequentially provided with a waterproof layer (15), a corrosion-resistant layer (16) and a hard steel plate bending-resistant layer (17) from outside to inside.

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