Sealing structure between heat exchanger and shell

Abstract

The utility model relates to the field of heat exchangers, in particular to a sealing structure between a heat exchanger and a shell, which comprises an upper cover plate, an outer shell, an internal thread female head, an internal butt joint pipe, an internal heat exchanger core, an external thread male head, an external thread male head sealing ring and an internal butt joint pipe sealing ring. The sealing performance is enhanced by adopting a mode of combining the threads and the sealing rings, liquid stored in the shell can be effectively prevented from leaking, the thread sealing mode is more convenient to assemble, the anti-fatigue performance during repeated disassembly and assembly can be improved, overhaul and maintenance are convenient, compared with traditional one-time welding sealing, overhaul and observation can be more convenient, and the sealing performance is improved. And the welding penetration leakage risk can also be avoided. The combination mode of the threads and the sealing rings can be used for sealing occasions between different types of shells and pipelines, and the sealing performance of the heat exchanger can be effectively improved. Through the design, a new thought is provided for improving and optimizing the sealing performance of the heat exchanger.

Description

Technical Field

[0001] This utility model relates to the field of heat exchangers, specifically to a sealing structure between a heat exchanger and its shell. Background Technology

[0002] Heat exchangers are widely used components in refrigeration, heat transfer, and other applications, effectively converting heat between different substances to achieve multiple functions such as cooling and heating. Sealing is a crucial factor affecting the overall performance of a heat exchanger; good sealing ensures long-term stable and effective operation. In current heat exchanger designs, the sealing structure between the heat exchanger and the shell often uses welded seals. This method has high labor and repair costs and is prone to problems such as incomplete sealing and leakage, which significantly affects heat exchange efficiency and may lead to environmental pollution and safety accidents. Especially in the application of cold storage heat exchangers in vehicle refrigerators, there is currently no highly reliable sealing structure that can ensure the heat exchanger piping extends out of the shell while preventing the refrigerant inside the shell from leaking. Therefore, designing a highly efficient sealing structure suitable for heat exchangers, effectively improving sealing performance, reducing leakage risks, and featuring easy disassembly and assembly for convenient maintenance and repair, while reducing the labor and material costs of brazing, would greatly contribute to improving and optimizing the sealing performance of heat exchangers. Summary of the Invention

[0003] The purpose of this invention is to provide a sealing structure between a heat exchanger and its shell. Through the combination of threads and a sealing ring, it effectively prevents leakage of liquid stored inside the shell. Furthermore, the threaded sealing method is more convenient to assemble, improves fatigue resistance during repeated disassembly and assembly, and facilitates inspection and maintenance. Compared with traditional one-time welded seals, it is easier to inspect and observe, and avoids the risk of leakage due to weld penetration. The threaded and sealing ring combination can be used for sealing between different types of shells and pipelines, effectively improving the sealing performance of the heat exchanger.

[0004] To achieve the above objectives, one embodiment of the present invention provides a sealing structure between a heat exchanger and a shell, including an upper cover plate, a shell body, an internal threaded female end, an internal connecting pipe, an internal heat exchanger core, an external threaded male end, an external threaded male end sealing ring, and an internal connecting pipe sealing ring.

[0005] The internal threaded female end includes a first internal threaded female end and a second internal threaded female end;

[0006] The internal connection pipe includes a first internal connection pipe and a second internal connection pipe;

[0007] The external thread male connector includes a first external thread male connector and a second external thread male connector;

[0008] The external thread male connector sealing ring includes a first external thread male connector sealing ring and a second external thread male connector sealing ring;

[0009] The internal connecting pipe sealing ring includes a first internal connecting pipe sealing ring and a second internal connecting pipe sealing ring;

[0010] The top cover is set on the top of the outer casing and fitted together.

[0011] The internal heat exchanger core is installed inside the outer casing;

[0012] One end of the first external thread male and the second external thread male are respectively connected to the pipes on the internal heat exchanger core, and the first external thread male sealing ring and the second external thread male sealing ring are respectively fitted at the connection.

[0013] The other ends of the first external thread male and the second external thread male are respectively connected to the first internal connecting pipe and the second internal connecting pipe, and the first internal thread female and the second internal thread female are respectively fitted at the connection point;

[0014] The first internal connecting pipe sealing ring is fitted onto the front end of the first internal connecting pipe, which is the end where the first internal connecting pipe connects to the first external threaded male connector.

[0015] The second internal connecting pipe sealing ring is fitted onto the front end of the second internal connecting pipe, which is the end where the second internal connecting pipe connects to the second external threaded male connector.

[0016] Preferably, the sealing structure is achieved by combining threads with a sealing ring.

[0017] Preferably, the internally threaded female end is a hexagonal nut.

[0018] Preferably, one end of the internal connecting pipe has a small bolt assembly structure, which is the location where the internal connecting pipe connects to the corresponding external threaded male connector.

[0019] Preferably, the sealing ring of the internal connecting pipe is fitted onto the threaded end of the internal connecting pipe.

[0020] This invention designs a sealing structure between a heat exchanger and its shell, combining threads and a sealing ring to effectively prevent leakage of liquid stored in the shell. The threaded seal is easier to assemble, improves fatigue resistance during repeated disassembly and assembly, and facilitates maintenance. Compared to traditional one-time welded seals, it allows for easier inspection and observation, and avoids the risk of weld-through leakage. The threaded and sealing ring combination can be used for sealing different types of shells and pipelines, effectively improving the sealing performance of the heat exchanger. This invention provides a new approach to improving and optimizing the sealing performance of heat exchangers. Attached Figure Description

[0021] Figure 1This is a three-dimensional schematic diagram of the sealing structure between a heat exchanger and a shell according to the present invention.

[0022] Figure 2 5-Internal heat exchanger core is a three-dimensional schematic diagram of a sealing structure between a heat exchanger and a shell according to this utility model.

[0023] Figure 3 This is a schematic diagram of the assembly of the external threaded male end of a sealing structure between a heat exchanger and its shell according to this utility model.

[0024] Figure 4 This is a schematic diagram of the shell assembly of a sealing structure between a heat exchanger and a shell according to the present invention.

[0025] Figure 5 This is a schematic diagram of the internal connecting pipe assembly of a sealing structure between a heat exchanger and its shell according to this utility model.

[0026] Figure 6 This is a schematic diagram of the assembly of the internal threaded female head of the sealing structure between the heat exchanger and the shell according to this utility model.

[0027] Figure 7 This is a schematic diagram of the first type of internal connecting pipe of the sealing structure between the heat exchanger and the shell according to the present invention.

[0028] Figure 8 This is a schematic diagram of the second type of internal connecting pipe of the sealing structure between the heat exchanger and the shell according to the present invention.

[0029] Components labeled in the diagram: 1-Top cover plate, 2-Outer shell, 3.1-First internal thread female connector, 3.2-Second internal thread female connector, 4.1-First internal connecting pipe, 4.2-Second internal connecting pipe, 5-Internal heat exchanger core, 6.1-First external thread male connector, 6.2-Second external thread male connector, 7.1-First external thread male connector sealing ring, 7.2-Second external thread male connector sealing ring, 8.1-First internal connecting pipe sealing ring and 8.2-Second internal connecting pipe sealing ring. Detailed Implementation

[0030] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings and specific examples.

[0031] like Figure 1 The image shown is an overall perspective view of a sealing structure between a heat exchanger and a shell, provided in one embodiment of this utility model; as shown... Figure 2 As shown, this is a perspective view of the sealing structure between the heat exchanger and the shell according to an embodiment of the present invention; 5-Internal heat exchanger core. Figure 3 As shown, this utility model provides an assembly diagram of the external threaded male connector of a sealing structure between a heat exchanger and its shell according to one embodiment; as shown... Figure 4As shown, this utility model provides a shell assembly diagram of a sealing structure between a heat exchanger and a shell according to one embodiment; as shown... Figure 5 As shown, this utility model provides an embodiment of an internal connecting pipe assembly diagram of a sealing structure between a heat exchanger and a shell; as shown... Figure 6 As shown, this utility model provides an assembly diagram of an internal threaded female end for a sealing structure between a heat exchanger and its shell, according to one embodiment. Figure 7 As shown, this utility model provides a first type of internal connecting pipe diagram of a sealing structure between a heat exchanger and a shell according to an embodiment of the present invention; as shown... Figure 8 The figure shows a second type of internal connecting pipe diagram of a sealing structure between a heat exchanger and a shell according to an embodiment of the present invention; the figure includes the following components: upper cover plate 1, outer shell 2, first internal thread female head 3.1, second internal thread female head 3.2, first internal connecting pipe 4.1, second internal connecting pipe 4.2, internal heat exchanger core 5, first external thread male head 6.1, second external thread male head 6.2, first external thread male head sealing ring 7.1, second external thread male head sealing ring 7.2, first internal connecting pipe sealing ring 8.1 and second internal connecting pipe sealing ring 8.2.

[0032] In the discussion of this embodiment, unless otherwise specified, when viewing this utility model from the perspective of the main viewpoint, the left is described as left and the right is described as right.

[0033] The top cover 1 has a grid-like mesh structure and is installed on the top of the outer shell 2.

[0034] The internal heat exchanger core 5 is installed inside the outer casing 2;

[0035] One end of the first external thread male connector 6.1 is connected to the pipeline on the internal heat exchanger core 5 (near the front of the internal heat exchanger core 5, located on the right side), and the first external thread male connector sealing ring 7.1 is fitted at the connection.

[0036] The other end of the first external thread male connector 6.1 is connected to the front end of the first internal connecting pipe 4.1, and the first internal thread female connector 3.1 is fitted onto the connection point;

[0037] One end of the second external thread male connector 6.2 is connected to the pipeline on the internal heat exchanger core 5 (near the back of the internal heat exchanger core 5, located on the right side), and the second external thread male connector sealing ring 7.2 is fitted at the connection.

[0038] The other end of the second external thread male connector 6.2 is connected to the front end of the second internal connecting pipe 4.2, and the second internal thread female connector 3.2 is fitted onto the connection point;

[0039] The front end of the first internal connecting pipe 4.1 has a small bolt assembly structure, and the sealing ring 8.1 of the first internal connecting pipe is fitted at this structure;

[0040] The front end of the second internal connecting pipe 4.2 has a small bolt assembly structure, and the sealing ring 8.2 of the second internal connecting pipe is fitted at this structure.

[0041] The top cover 1 is used to seal the top of the outer casing 2.

[0042] The first internal thread female end 3.1 and the second internal thread female end 3.2 are hexagonal nuts.

[0043] The sealing structure is achieved by combining threads with a sealing ring.

[0044] There are two types of sealing structures: outer textured inner ring and inner textured outer ring.

[0045] The outer thread inner ring form exists at the pipeline of the internal heat exchanger core 5. First, the first external thread male head 6.1 and the second external thread male head 6.2 respectively form a first layer of seal with the corresponding pipeline of the internal heat exchanger core 5 through threads. Then, the threaded seal is sealed again by the first external thread male head sealing ring 7.1 and the second external thread male head sealing ring 7.2, forming a double layer of seal and realizing the enhancement of sealing performance.

[0046] The inner thread outer ring is present at the position where the first inner connecting pipe 4.1 and the second inner connecting pipe 4.2 extend out of the sealing outer shell 2. First, the first inner connecting pipe sealing ring 8.1 and the second inner connecting pipe sealing ring 8.2 respectively perform the first layer of sealing on the first inner connecting pipe 4.1 and the second inner connecting pipe 4.2. Then, the first internal thread female head 3.1 and the second internal thread female head 3.2 seal again to form a double layer of sealing and enhance the sealing performance.

[0047] The advantages of the outer textured inner ring design are easy disassembly and assembly, the sealing ring is not easily damaged by compression, and its regular shape helps to save internal space and reduce maintenance difficulty when applied inside equipment while enhancing sealing performance.

[0048] The inner-patterned outer ring design provides a stronger seal due to the rotational compression deformation of the sealing ring, but it requires more maintenance space than the outer-patterned inner ring design, making it suitable for external equipment.

[0049] The sealing structure, which combines an outer-patterned inner ring with an inner-patterned outer ring, effectively prevents leakage of liquid stored inside the casing and avoids the risk of leakage due to weld burn-through.

[0050] The above embodiments are merely illustrative of the design principles and uses of this utility model, and are not intended to limit this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A sealing structure between a heat exchanger and its shell, characterized in that: The sealing structure between the heat exchanger and the shell includes an upper cover plate, an outer shell, an internal threaded female head, an internal connecting pipe, an internal heat exchanger core, an external threaded male head, an external threaded male head sealing ring, and an internal connecting pipe sealing ring. The internal threaded female end includes a first internal threaded female end and a second internal threaded female end; The internal connection pipe includes a first internal connection pipe and a second internal connection pipe; The external thread male connector includes a first external thread male connector and a second external thread male connector; The external thread male connector sealing ring includes a first external thread male connector sealing ring and a second external thread male connector sealing ring; The internal connecting pipe sealing ring includes a first internal connecting pipe sealing ring and a second internal connecting pipe sealing ring; The top cover is set on the top of the outer casing and fitted together. The internal heat exchanger core is installed inside the outer casing; One end of the first external thread male and the second external thread male are respectively connected to the pipes on the internal heat exchanger core, and the first external thread male sealing ring and the second external thread male sealing ring are respectively fitted at the connection. The other ends of the first external thread male and the second external thread male are respectively connected to the first internal connecting pipe and the second internal connecting pipe, and the first internal thread female and the second internal thread female are respectively fitted at the connection point; The first internal connecting pipe sealing ring is fitted onto the front end of the first internal connecting pipe, which is the end where the first internal connecting pipe connects to the first external threaded male connector. The second internal connecting pipe sealing ring is fitted onto the front end of the second internal connecting pipe, which is the end where the second internal connecting pipe connects to the second external threaded male connector.

2. The sealing structure between the heat exchanger and the shell according to claim 1, characterized in that: The sealing structure is achieved by combining threads with a sealing ring.

3. The sealing structure between the heat exchanger and the shell according to claim 1, characterized in that: The internal thread female end is a hexagonal nut.

4. The sealing structure between the heat exchanger and the shell according to claim 1, characterized in that: One end of the internal connecting pipe has a small bolt assembly structure, which is the location where the internal connecting pipe connects to the corresponding external threaded male connector.

5. The sealing structure between the heat exchanger and the shell according to claim 1, characterized in that: The sealing ring of the internal connecting pipe is fitted on the threaded end of the internal connecting pipe.

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