Heat exchange device

Abstract

The utility model provides a heat exchange device which comprises an outer shell and a plurality of annular pipe shells, the annular pipe shells are arranged in the outer shell, a first flow channel used for circulating a first heat exchange medium is formed in each annular pipe shell, and the annular pipe shells are arranged in the outer shell at intervals from inside to outside. And the annular tube shell on the outer side of the two adjacent annular tube shells surrounds the annular tube shell on the inner side, so that a second flow channel for circulating a second heat exchange medium is formed between the two adjacent annular tube shells, and the first heat exchange medium and the second heat exchange medium exchange heat through the tube walls of the annular tube shells. Due to the fact that the annular pipe shell forms the first flow channel and then is installed in the outer shell, strict sealing measures do not need to be conducted on the annular pipe shell and the inner wall of the outer shell, only the sealing performance of the annular pipe shell needs to be guaranteed, sealing work is relatively less and simpler, and the process difficulty is smaller.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange, and in particular to a heat exchange device. Background Art

[0002] In the industrial production process, some gas-liquid reactions require a high-temperature environment, thus generating high-temperature liquids or high-temperature gases. To improve energy utilization efficiency, a heat exchange device is usually used to recover the heat carried by the high-temperature liquid or high-temperature gas. Among them, a common heat exchange device is a plate heat exchanger. Generally speaking, a plate heat exchanger uses plate members to partition two flow channels in a heat exchange container for two heat exchange media to flow respectively, so as to realize the heat exchange between the two heat exchange media.

[0003] However, a plate heat exchanger usually needs to weld the periphery of the plate member to the inner wall of the heat exchange container. To ensure a good sealing effect, the operation difficulty is relatively high. Summary of the Utility Model

[0004] An object of the utility model is to provide a heat exchange device that can solve any of the above problems.

[0005] In particular, the utility model provides a heat exchange device, comprising:

[0006] A housing; and

[0007] A plurality of annular tube shells, the plurality of annular tube shells are arranged in the housing, and a first flow channel for flowing a first heat exchange medium is formed inside each annular tube shell. The plurality of annular tube shells are spaced apart from the inside to the outside in the housing, so that the outermost annular tube shell among adjacent two annular tube shells surrounds the inner annular tube shell, thereby forming a second flow channel for flowing a second heat exchange medium between the adjacent two annular tube shells, so that the first heat exchange medium and the second heat exchange medium exchange heat through the tube wall of the annular tube shell.

[0008] Optionally, the plurality of annular tube shells are coaxially arranged.

[0009] Optionally, the heat exchange device is provided with an input pipe, the input pipe extends from the outside of the housing into the inside of the housing and is located at the end of the plurality of annular tube shells, and the input pipe is communicated with each first flow channel through a shunt pipe, so that the first heat exchange medium in the input pipe flows into the corresponding first flow channel through the shunt pipe.

[0010] Optionally, the input pipe extends from one end of the housing to the opposite end along the radial direction of the plurality of annular tube shells, and the input pipe is communicated with each first flow channel through two shunt pipes that are centrosymmetric along the axis center of the corresponding annular tube shell.

[0011] Optionally, a heat conducting member is provided between two adjacent annular housings to improve the heat exchange efficiency.

[0012] Optionally, the outer surface of the heat conducting member is spherical.

[0013] Optionally, the heat conducting member is an arc-shaped sheet, and a plurality of arc-shaped sheets are provided between two adjacent annular housings, and the plurality of arc-shaped sheets are distributed along the axial extension direction of the annular housing.

[0014] Optionally, two adjacent arc-shaped sheets partially overlap in the distribution direction.

[0015] Optionally, reinforcing ribs are provided inside the annular housing, and the reinforcing ribs are connected to the two annular inner walls of the annular housing.

[0016] Optionally, the heat exchange device further includes a circular housing, the circular housing is surrounded by the innermost annular housing, and the inside of the circular housing is used for flowing a first heat exchange medium.

[0017] The heat exchange device of the present utility model forms a first flow channel for flowing a first heat exchange medium by using an annular housing, and arranges a plurality of annular housings in a surrounding manner inside the outer housing, so that the internal space of the outer housing between two adjacent annular housings can be used as a second flow channel for flowing a second heat exchange medium, so that the first heat exchange medium flowing in the first flow channel and the second heat exchange medium flowing in the second flow channel at the same time can realize heat exchange through the housing wall of the annular housing.

[0018] According to the following detailed description of specific embodiments of the present utility model in conjunction with the drawings, those skilled in the art will more clearly understand the above and other objects, advantages and features of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Some specific embodiments of the present utility model will be described in detail hereinafter with reference to the drawings in an exemplary but not restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0020] Figure 1 is a schematic diagram of a heat exchange device according to an embodiment of the present utility model;

[0021] Figure 2 is a schematic cross-sectional view of a heat exchange device according to an embodiment of the present utility model;

[0022] Figure 3 is a partial schematic cross-sectional view of a heat exchange device according to an embodiment of the present utility model;

[0023] Figure 4Schematic diagram of the interior of the heat exchange device housing according to an embodiment of the present utility model;

[0024] Figure 5 Schematic diagram of two annular shells in the heat exchange device according to another embodiment of the present utility model;

[0025] Figure 6 Schematic diagram of two annular shells in the heat exchange device according to yet another embodiment of the present utility model. Detailed implementation manners

[0026] Those skilled in the art should understand that the embodiments described below are only a part of the embodiments of the present utility model, rather than all embodiments of the present utility model. This part of the embodiments is intended to explain the technical principle of the present utility model, rather than to limit the protection scope of the present utility model. Based on the embodiments provided by the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts should still fall within the protection scope of the present utility model.

[0027] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0028] Furthermore, it should be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can also be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] Such as Figures 1 to 3As shown, in one embodiment, the heat exchange device 100 includes a housing 110 and a plurality of annular tube shells 120. The plurality of annular tube shells 120 are disposed within the housing 110. A first flow channel 101 for circulating a first heat exchange medium is formed inside each annular tube shell 120. The plurality of annular tube shells 120 are spaced apart from the inside to the outside within the housing 110, such that the outermost annular tube shell 120 among two adjacent annular tube shells 120 surrounds the inner annular tube shell 120, thereby forming a second flow channel 102 for circulating a second heat exchange medium between two adjacent annular tube shells 120, so that the first heat exchange medium and the second heat exchange medium exchange heat through the tube wall of the annular tube shell 120.

[0030] Referring to Figures 1 to 3 As shown, specifically, the housing 110 has a cylindrical structure and forms a cylindrical space inside. The annular tube shell 120 is circular, and the inside is the first flow channel 101. The sizes of the plurality of annular tube shells 120 are all different. Among any two annular tube shells 120, the inner diameter of one must be greater than the outer diameter of the other. The plurality of annular tube shells 120 are arranged in sequence around the center of the housing 110 within the housing 110, that is, the outermost annular tube shell 120 among two adjacent annular tube shells 120 surrounds the inner annular tube shell 120. In this way, an annular second flow channel 102 is formed between the inner ring surface of the outer annular tube shell 120 and the outer ring surface of the inner annular tube shell 120 of two adjacent annular tube shells 120. Moreover, the plurality of annular tube shells 120 are coaxially arranged, so that the radial dimensions of each part of the second flow channel 102 between two adjacent annular tube shells 120 are kept consistent.

[0031] Referring to Figures 1 to 3 As shown, the first flow channel 101 in the plurality of annular tube shells 120 is for circulating the first heat exchange medium. Referring to Figure 3 As shown by the solid vertical arrow, the first heat exchange medium flows into the first flow channel 101 from the end of each annular tube shell 120 and flows along the axial extension direction of the annular tube shell 120 in the first flow channel 101. Referring to Figure 2 In terms of the plane shown in Figure 3 that is, it flows longitudinally. The second flow channel 102 between adjacent annular tube shells 120 is for circulating the second heat exchange medium. Referring to Figure 2If it is the plane shown, it also flows longitudinally. The first heat exchange medium flows in the first flow channel 101, and at the same time, the second heat exchange medium flows in the second flow channel 102. The first heat exchange medium and the second heat exchange medium can exchange heat through the shell wall of the annular shell 120.

[0032] In the solution of this embodiment, by using the annular shell 120 to form the first flow channel 101 for the first heat exchange medium to flow through, and arranging a plurality of annular shells 120 in a surrounding manner within the outer shell 110, the internal space of the outer shell 110 between two adjacent annular shells 120 can be used as the second flow channel 102 for the second heat exchange medium to flow through, so that the first heat exchange medium flowing in the first flow channel 101 and the second heat exchange medium flowing in the second flow channel 102 at the same time can exchange heat through the shell wall of the annular shell 120. Since the first flow channel 101 is formed by the annular shell 120 and then installed in the outer shell 110, there is no need for strict sealing measures between the annular shell 120 and the inner wall of the outer shell 110. Only the sealing performance of the annular shell 120 needs to be ensured, and the sealing work is relatively less and simpler. Therefore, compared with the plate heat exchanger where the plate needs to be welded and sealed with the inner wall of the outer shell, the heat exchange device 100 of this embodiment has a lower process difficulty during production, which helps to improve production efficiency. In addition, the annular shell 120 also helps to improve the structural strength.

[0033] By coaxially arranging a plurality of annular shells 120, the radial dimensions at various parts of the second flow channel 102 are made consistent, so that the heat exchange effect between the first heat exchange medium and the second heat exchange medium is more uniform, and the heat exchange efficiency is improved.

[0034] It should be noted that in some other embodiments, a plurality of annular shells may not be coaxially arranged, that is, the radial dimensions at various parts of the second flow channel can be different.

[0035] As Figures 1 to 3 shown, in one embodiment, the heat exchange device 100 is provided with an input pipe 130. The input pipe 130 extends from the outside of the outer shell 110 into the inside of the outer shell 110 and is located at the end of a plurality of annular shells 120. The input pipe 130 is communicated with each first flow channel 101 through a shunt pipe 131, so that the first heat exchange medium in the input pipe 130 flows into the corresponding first flow channel 101 through the shunt pipe 131.

[0036] Referring to Figures 1 to 3 shown, the input pipe 130 extends in a direction perpendicular to the axis of the annular shell 120 and is located at one end of a plurality of annular shells 120. Referring to Figure 2As shown, the axis of the annular shell 120 extends longitudinally, and the end portions of the annular shell 120 are the top end and the bottom end respectively. The input pipe 130 extends transversely from the outside of the outer shell 110 into the inside of the outer shell 110 and is located at the top end of the annular shell 120. On the plane perpendicular to the axis of the annular shell 120, the projection of the input pipe 130 overlaps with a plurality of annular shells 120, so that the input pipe 130 can communicate with each annular shell 120 via the longitudinally extending shunt pipe 131.

[0037] Referring to Figure 3 As shown by the solid horizontal arrow and the solid vertical arrow in, the first heat exchange medium enters the inside of the outer shell 110 through the input pipe 130, and then flows to the corresponding first flow channel 101 via each shunt pipe 131.

[0038] In the solution of this embodiment, by making the input pipe 130 communicate with the first flow channels 101 formed by each annular shell 120 via a plurality of shunt pipes 131 inside the outer shell 110, on the basis that the first heat exchange medium can flow to the first flow channels 101 formed by each annular shell 120, only one pipe passes through the outer shell 110, which helps to simplify the structure and reduce the sealing requirements of the outer shell 110.

[0039] It should be noted that in some other embodiments, it may also be that the first heat exchange medium is respectively transported to a plurality of first flow channels through a plurality of infusion pipes passing through the outer shell.

[0040] As Figures 1 to 4 shown, the input pipe 130 extends from one end of the outer shell 110 to the opposite end along the radial direction of a plurality of annular shells 120, and the input pipe 130 communicates with each first flow channel 101 through two shunt pipes 131 that are centrosymmetric along the axis of the corresponding annular shell 120. Specifically, that is to say, the input pipe 130 passes through the common axis of a plurality of annular shells 120, so that on the plane perpendicular to the axis of the annular shell 120, the projection of the input pipe 130 has two overlapping portions that are centrosymmetric along the axis of the annular shell 120 with a plurality of annular shells 120, so that the input pipe 130 can communicate with the first flow channel 101 via two shunt pipes 131 that are centrosymmetric along the axis of the corresponding annular shell 120.

[0041] Those skilled in the art can understand that by making the input pipe 130 communicate with each first flow channel 101 through two shunt pipes 131 that are centrosymmetric along the axis of the corresponding annular shell 120, it helps to more evenly transport the first heat exchange medium to the first flow channel 101, make the temperature of the first heat exchange medium in the first flow channel 101 more uniform, and thus improve the heat exchange effect.

[0042] Referring to Figure 1 and Figure 2As shown, further, the heat exchange device 100 is further provided with an output pipe 140. The output pipe 140 is arranged at the other end of the plurality of annular pipe shells 120 opposite to the input pipe 130, and is used to discharge the first heat exchange medium that has undergone heat exchange in the first flow channel 101 to the outside. The connection manner of the output pipe 140 to the annular pipe shell 120 refers to the output pipe 130.

[0043] As Figures 2 to 4 shown, a heat conduction member 150 is arranged between two adjacent annular pipe shells 120 to improve the heat exchange efficiency. The outer surface of the heat conduction member 150 is spherical. Specifically, a plurality of spherical heat conduction members 150 are arranged between two adjacent annular pipe shells 120, and the spherical heat conduction members 150 are in contact with the annular walls of the two annular pipe shells 120. That is, a plurality of heat conduction members 150 are arranged in the second flow channel 102.

[0044] In the solution of this embodiment, by arranging the heat conduction member 150 between two adjacent annular pipe shells 120, that is, arranging the heat conduction member 150 in the second flow channel 102, the heat exchange area between the first heat exchange medium and the second heat exchange medium can be increased, and the heat conduction member 150 can also play a guiding role for the second heat exchange medium at the same time, and to a certain extent, the flow time of the second heat exchange medium in the second flow channel 102 is extended, that is, the heat exchange time is increased, thereby improving the heat exchange effect.

[0045] In addition, the spherical heat conduction member 150 helps to guide and disperse the second heat exchange medium in multiple directions, improving the uniformity of the heat exchange effect.

[0046] As Figure 5 shown, in some other embodiments, the heat conduction member 150 is an arc-shaped piece, and a plurality of arc-shaped pieces are arranged between two adjacent annular pipe shells 120, and the plurality of arc-shaped pieces are distributed along the axial extension direction of the annular pipe shell 120. The structure of the arc-shaped piece is relatively simple and the cost is low.

[0047] As Figure 5 shown, further, two adjacent arc-shaped pieces partially overlap along the distribution direction. Specifically, referring to Figure 5 the shaded area in, that is, it schematically shows the area where the heat conduction members 150 of two arc-shaped pieces overlap along the axial direction of the annular pipe shell 120. By making two adjacent arc-shaped pieces partially overlap along the distribution direction, a tortuous flow path is constructed by the arc-shaped pieces in the second flow channel 102, thereby increasing the flow time of the second heat exchange medium in the second flow channel 102, and further increasing the heat exchange time between the second heat exchange medium and the first heat exchange medium, and improving the heat exchange effect.

[0048] As Figure 6As shown, in some other embodiments, the heat conducting member 150 is a ring-shaped corrugated plate structure. Specifically, the heat conducting member 150 surrounds the inner ring-shaped shell 120, and the corrugation extends circumferentially. The peaks and valleys of the corrugation are in contact with the outer ring-shaped shell 120 and the inner ring-shaped shell 120 respectively.

[0049] It should be noted that, in some other embodiments, the heat conducting member can be in various feasible structural forms such as sheet-shaped, block-shaped, rod-shaped, irregular shape, etc., as long as the heat conducting member is in contact with the tube wall of the ring-shaped shell.

[0050] As Figure 2 and Figure 3 As shown, reinforcing ribs 121 are provided inside the ring-shaped shell 120, and the reinforcing ribs 121 are connected to the two ring-shaped inner walls of the ring-shaped shell 120. By providing the reinforcing ribs 121, it helps to improve the structural stability of the ring-shaped shell 120, enabling the ring-shaped shell 120 to withstand greater pressure and avoiding deformation problems in special cases. At the same time, the reinforcing ribs 121 can also play a role in heat conduction and flow guiding, thereby improving the heat conduction efficiency of the first heat exchange medium to the tube wall of the ring-shaped shell 120 and helping to improve the heat exchange efficiency.

[0051] As Figure 2 As shown, in one embodiment, the heat exchange device 100 further includes a circular tube shell 160. The circular tube shell 160 is surrounded by the innermost ring-shaped shell 120, and the inside of the circular tube shell 160 is used for the first heat exchange medium to flow through. By providing the circular tube shell 160, the heat exchange area between the first heat exchange medium and the second heat exchange medium can be increased, thereby improving the heat exchange effect.

[0052] At this point, those skilled in the art should recognize that although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and determined to cover all these other variations or modifications.

Claims

1. A heat exchange device, characterized in that, Comprising: A housing; And A plurality of annular shells, the plurality of annular shells being disposed within the housing, a first flow path for flowing a first heat exchange medium being formed inside each of the annular shells, and the plurality of annular shells being spaced apart from each other inside the housing from the inside to the outside, such that the outermost annular shell of two adjacent annular shells surrounds the inner annular shell, thereby forming a second flow path for flowing a second heat exchange medium between two adjacent annular shells, so that the first heat exchange medium and the second heat exchange medium exchange heat through the tube walls of the annular shells.

2. The heat exchange device according to claim 1, wherein: The plurality of annular shells are coaxially arranged.

3. The heat exchange device according to claim 2, wherein: The heat exchange device is provided with an input pipe, the input pipe extending from outside the housing into the housing and being located at the ends of the plurality of annular shells, and the input pipe is communicated with each of the first flow paths through a shunt pipe, so that the first heat exchange medium in the input pipe flows into the corresponding first flow path through the shunt pipe.

4. The heat exchange device according to claim 3, wherein: The input pipe extends from one end of the housing to the opposite end along the radial direction of the plurality of annular shells, and the input pipe is communicated with each of the first flow paths through two shunt pipes that are centrosymmetric along the axis of the corresponding annular shell.

5. The heat exchange device according to claim 1, wherein: A heat conducting member is provided between two adjacent annular shells to improve the heat exchange efficiency.

6. The heat exchange device according to claim 5, wherein: The outer surface of the heat conducting member is spherical.

7. The heat exchange device according to claim 5, wherein: The heat conducting member is an arc-shaped piece, and a plurality of the arc-shaped pieces are provided between two adjacent annular shells, and the plurality of arc-shaped pieces are distributed along the axial extension direction of the annular shell.

8. The heat exchange device according to claim 7, wherein: Two adjacent arc-shaped pieces partially overlap along the distribution direction.

9. The heat exchange device according to claim 1, wherein: Reinforcing ribs are provided inside the annular shell, and the reinforcing ribs are connected to the two annular inner walls of the annular shell.

10. The heat exchange device according to claim 1, wherein: The heat exchange device further includes a circular shell, the circular shell being surrounded by the innermost annular shell, and the inside of the circular shell is used for flowing a first heat exchange medium.

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