Spiral heat exchanger

Abstract

The utility model discloses a spiral heat exchanger which comprises a shell, a heat exchanger, a heat exchanger, a heat exchanger, a heat exchanger and a heat exchanger, wherein the shell is provided with a liquid inlet pipe and a liquid outlet pipe; a spiral heat exchange tube is arranged in the shell, and spiral fins are arranged on the spiral heat exchange tube; the shell comprises an outer shell, a first end cover and a second end cover, the first end cover and the second end cover are connected to the two ends of the outer shell in a sleeving mode respectively and are welded and fixed, the liquid inlet end of the spiral heat exchange pipe penetrates out of the first end cover and is welded and fixed, and the liquid outlet end of the spiral heat exchange pipe penetrates out of the second end cover and is welded and fixed. The split type heat exchanger is novel in structure, high in heat exchange efficiency, convenient to manufacture separately and low in manufacturing requirement due to the split type design.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, and in particular relates to a spiral heat exchanger. Background Technology

[0002] The function of a heat exchanger is to transfer heat from a hot fluid to a cold fluid; it is the core equipment in a heat exchange system.

[0003] In existing heat exchangers, the heat fluid flows in straight heat exchange tubes, resulting in a small heat exchange area and low heat exchange efficiency. To increase the heat exchange area, it is usually necessary to increase the length of the straight heat exchange tubes, which leads to an increase in the length of the outer shell and thus increases the cost.

[0004] Existing patent document (publication number: CN206387292U) discloses "a heat exchanger assembly", which also has the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art and to provide a spiral heat exchanger with a novel structure, high heat exchange efficiency, and a split design that is easy to manufacture separately with low manufacturing requirements.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A spiral heat exchanger includes: a shell, with an inlet pipe and an outlet pipe respectively disposed on the shell; characterized in that: a spiral heat exchange tube is disposed inside the shell, and the spiral heat exchange tube is provided with spiral fins; the shell includes an outer shell, a first end cap, and a second end cap, the first end cap and the second end cap being respectively fitted onto the two ends of the outer shell and welded and fixed, the inlet end of the spiral heat exchange tube passing through the first end cap and welded and fixed, and the outlet end of the spiral heat exchange tube passing through the second end cap and welded and fixed. This heat exchanger has a novel structure, high heat exchange efficiency, and adopts a split design, which is convenient for separate manufacturing and has low manufacturing requirements.

[0008] Furthermore, the outer shell comprises a first shell segment, a second shell segment, and a central shell segment, with the central shell segment welded and fixed between the first and second shell segments. The outer shell adopts a segmented design, allowing for the selection and combination of shell segments of different lengths according to actual needs, thus enhancing its adaptability.

[0009] Furthermore, the first shell segment has a first inner groove on its end face, the second shell segment has a second inner groove on its end face, and the two ends of the central shell segment have a first convex ring and a second convex ring respectively. The first convex ring corresponds to the first inner groove, and the second convex ring corresponds to the second inner groove, which reduces the difficulty of docking the central shell segment with the first shell segment and the second shell segment. After docking, a tortuous sealing path can be formed, thereby improving the sealing performance of the connection.

[0010] Further, the shell is provided with a first sheath and a second sheath, the first sheath covers the gap at the connection between the first shell segment and the center shell segment, and blocks the gap to prevent leakage at the gap; the second sheath covers the gap at the connection between the center shell segment and the second shell segment, and blocks the gap to prevent leakage at the gap.

[0011] Further, the shell is provided with a pipe joint, and the pipe joint is provided with positioning steps corresponding to the liquid inlet pipe and the liquid outlet pipe, so that the pipe joint can be accurately connected with the liquid inlet pipe and the liquid outlet pipe, the installation difficulty of the liquid inlet pipe and the liquid outlet pipe is reduced.

[0012] Further, the first end cover is provided with a first sealing interface matched with the liquid inlet end of the spiral heat exchange pipe, which can increase the contact area with the spiral heat exchange pipe, improve the installation strength of the spiral heat exchange pipe, and improve the sealing performance of the connection between the liquid inlet end of the spiral heat exchange pipe and the first end cover.

[0013] Further, the second end cover is provided with a second sealing interface matched with the liquid outlet end of the spiral heat exchange pipe, which can increase the contact area with the spiral heat exchange pipe, improve the installation strength of the spiral heat exchange pipe, and improve the sealing performance of the connection between the liquid outlet end of the spiral heat exchange pipe and the second end cover.

[0014] The utility model discloses a heat exchanger, which has the following beneficial effects due to the adoption of the above technical solutions:

[0015] 1. The spiral fin not only increases the heat exchange area, but also facilitates the full and uniform contact between different media, thereby improving the heat exchange efficiency.

[0016] 2. The shell is designed in a segmented manner, and different lengths of shell segments can be selected for combination according to actual needs, which has higher adaptability. When the shell segments are combined, the first convex ring is embedded into the first inner groove, and the second convex ring is embedded into the second inner groove, so that accurate butt joint is realized, the difficulty of butt joint of the center shell segment with the first shell segment and the second shell segment is reduced, and then the connection between the first shell segment and the center shell segment and the connection between the second shell segment and the center shell segment are welded and fixed. The first shell segment and the center shell segment and the second shell segment and the center shell segment can form a zigzag sealing path, thereby improving the sealing performance of the connections.

[0017] 3. The first sheath covers the gap at the connection between the first shell segment and the center shell segment, and the second sheath covers the gap at the connection between the center shell segment and the second shell segment, so as to block the two gaps and prevent leakage at the two gaps. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further described below with reference to the drawings:

[0019] Figure 1Structure schematic view of the embodiment one of the utility model;

[0020] Figure 2 Structure schematic view of the spiral heat exchange pipe in the embodiment one;

[0021] Figure 3 Structure schematic view of the liquid outlet pipe and the shell butt joint in the embodiment one;

[0022] Figure 4 Structure schematic view of the embodiment two of the utility model;

[0023] Figure 5 Structure schematic view of the first shell segment and the center shell segment butt joint in the embodiment two.

[0024] In the drawing: 1 - shell; 2 - liquid inlet pipe; 3 - liquid outlet pipe; 4 - spiral heat exchange pipe; 5 - spiral fin; 6 - outer shell; 7 - first end cover; 8 - second end cover; 9 - first sealing interface; 10 - second sealing interface; 11 - pipe joint; 12 - positioning step groove; 13 - first shell segment; 14 - second shell segment; 15 - center shell segment; 16 - first inner groove; 17 - first convex ring; 18 - first sheath; 19 - second sheath. DETAILED DESCRIPTION

[0025] As Figures 1 to 3 shown, it is the embodiment one of the utility model

[0026] A spiral heat exchanger, comprising: a shell 1, the shell 1 is respectively provided with liquid inlet pipe 2 and liquid outlet pipe 3, the shell 1 is provided with spiral heat exchange pipe 4, the liquid inlet end, liquid outlet end of spiral heat exchange pipe 4 all are fixed out of shell 1, and the both ends of spiral heat exchange pipe 4 are fixed, so that the installation strength of spiral heat exchange pipe 4 is improved.

[0027] When using, medium one enters the shell 1 through liquid inlet pipe 2, medium two enters from the liquid inlet end of spiral heat exchange pipe 4 and flows out from the liquid outlet end, medium one contacts with the wall surface of spiral heat exchange pipe 4, and heat exchange is realized between medium one and medium two in spiral heat exchange pipe 4, the flow path of medium two is long, and heat exchange is more sufficient, the length of spiral heat exchange pipe 4 is lengthened, and the length of shell 1 does not need to be lengthened, so that the structure is compact.

[0028] Spiral fin 5 is arranged on spiral heat exchange pipe 4, not only the heat exchange area is increased, but also the contact surface between different media is fully and uniformly contacted, so that the heat exchange efficiency is improved.

[0029] The shell 1 comprises outer shell 6, first end cover 7 and second end cover 8, the first end cover 7 and the second end cover 8 are respectively sleeved on the both ends of outer shell 6 and are welded and fixed, the shell 1 adopts split type design, is convenient for separate manufacture, and the manufacturing requirement is reduced.

[0030] The first end cover 7 is provided with a first sealing interface 9 matched with the liquid inlet end of the spiral heat exchange pipe 4, the liquid inlet end of the spiral heat exchange pipe 4 penetrates out of the first sealing interface 9 and is welded and fixed, which on the one hand increases the contact area with the spiral heat exchange pipe 4, thereby improving the installation strength of the spiral heat exchange pipe 4, and on the other hand improves the sealing performance of the connection between the liquid inlet end of the spiral heat exchange pipe 4, thereby preventing leakage and having good sealing performance.

[0031] The second end cover 8 is provided with a second sealing interface 10 matched with the liquid outlet end of the spiral heat exchange pipe 4, the liquid outlet end of the spiral heat exchange pipe 4 penetrates out of the second end cover 8 and is welded and fixed, which on the one hand increases the contact area with the spiral heat exchange pipe 4, thereby improving the installation strength of the spiral heat exchange pipe 4, and on the other hand improves the sealing performance of the connection between the liquid outlet end of the spiral heat exchange pipe 4, thereby preventing leakage and having good sealing performance.

[0032] The shell 6 is provided with a pipe joint 11, the pipe joint 11 is provided with a positioning step groove 12 corresponding to the liquid inlet pipe 2 and the liquid outlet pipe 3, so that the pipe joint 11 can be accurately connected with the liquid inlet pipe 2 and the liquid outlet pipe 3, the installation position is guaranteed, and the installation difficulty of the liquid inlet pipe 2 and the liquid outlet pipe 3 is reduced.

[0033] As shown in Figure 4 and Figure 5 , it is an embodiment two of the utility model

[0034] Based on the technical scheme of the embodiment one, the shell 6 comprises a first shell segment 13, a second shell segment 14 and a center shell segment 15, the center shell segment 15 is welded and fixed between the first shell segment 13 and the second shell segment 14, the first end cover 7 is sleeved with the first shell segment 13 and welded and fixed, and the second end cover 8 is sleeved with the second shell segment 14 and welded and fixed.

[0035] The shell 6 adopts a segmented design, different lengths of shell segments can be selected for combination according to actual requirements, and the adaptability is stronger.

[0036] The end face of the first shell segment 13 is provided with a first inner groove 16, the end face of the second shell segment 14 is provided with a second inner groove, and the two ends of the center shell segment 15 are respectively provided with a first convex ring 17 and a second convex ring, the first convex ring 17 corresponds to the first inner groove 16, and the second convex ring corresponds to the second inner groove.

[0037] When being combined, the first convex ring 17 is embedded into the first inner groove 16, and the second convex ring is embedded into the second inner groove, accurate connection is realized, the difficulty of connecting the center shell segment 15 with the first shell segment 13 and the second shell segment 14 is reduced, then the connection between the first shell segment 13 and the center shell segment 15 and the connection between the second shell segment 14 and the center shell segment 15 are welded and fixed, and a zigzag sealing path can be formed between the first shell segment 13 and the center shell segment 15 and between the second shell segment 14 and the center shell segment 15, thereby improving the sealing performance of the connections.

[0038] The first sheath 18 and the second sheath 19 are welded and fixed on the shell 6, the first sheath 18 covers the gap at the joint of the first shell segment 13 and the center shell segment 15, and seals the gap to prevent leakage at the gap; the second sheath 19 covers the gap at the joint of the center shell segment 15 and the second shell segment 14, and seals the gap to prevent leakage at the gap.

[0039] The above is only a specific embodiment of the present application, but the technical features of the present application are not limited to this. Any simple change, equivalent replacement or modification made on the basis of the present application to solve the same technical problem and achieve the same technical effect is included in the protection scope of the present application.

Claims

1. A spiral heat exchanger, comprising: a housing, the housing being provided with an inlet pipe and an outlet pipe respectively; characterized in that: a spiral heat exchange pipe is arranged in the housing, the spiral heat exchange pipe being provided with spiral fins; the housing comprises an outer shell, a first end cover and a second end cover, the first end cover and the second end cover being respectively sleeved on both ends of the outer shell and being welded and fixed, the inlet end of the spiral heat exchange pipe penetrating out of the first end cover and being welded and fixed, and the outlet end of the spiral heat exchange pipe penetrating out of the second end cover and being welded and fixed.

2. A spiral heat exchanger according to claim 1, characterised in that: the outer shell comprises a first shell segment, a second shell segment and a center shell segment, the center shell segment being welded and fixed between the first shell segment and the second shell segment.

3. A spiral heat exchanger according to claim 2, wherein: a first inner groove is arranged on the end face of the first shell segment, a second inner groove is arranged on the end face of the second shell segment, and the two ends of the center shell segment are respectively provided with a first convex ring and a second convex ring, the first convex ring corresponding to the first inner groove, and the second convex ring corresponding to the second inner groove.

4. A spiral heat exchanger according to claim 2, wherein: a first sheath and a second sheath are arranged on the outer shell, the first sheath covering the gap at the connection between the first shell segment and the center shell segment, and the second sheath covering the gap at the connection between the center shell segment and the second shell segment.

5. A spiral heat exchanger according to claim 1, wherein: a pipe joint is arranged on the outer shell, the pipe joint being provided with a positioning step groove corresponding to the inlet pipe and the outlet pipe.

6. A spiral heat exchanger according to claim 1, wherein: a first sealing interface adapted to the inlet end of the spiral heat exchange pipe is arranged on the first end cover.

7. A spiral heat exchanger according to claim 1, wherein: a second sealing interface adapted to the outlet end of the spiral heat exchange pipe is arranged on the second end cover.

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