Core body structure of winding pipe type heat exchanger and winding pipe type heat exchanger

Abstract

The utility model discloses a core body structure of a winding pipe type heat exchanger and the winding pipe type heat exchanger. The heat exchange tube extends along the axial direction of the central cylinder and is spirally wound on the periphery of the central cylinder layer by layer from inside to outside to form a multi-layer spiral tube; the peripheral wall of the annular sound absorption cylinder is enclosed to form a sound absorption cavity with two open ends, and the peripheral wall of the annular sound absorption cylinder is arranged between two adjacent layers of spiral pipes in the circumferential direction. During heat exchange, the sound absorption barrel can absorb noise generated during heat exchange of the inner surrounding core body structure, and the noise reduction effect is achieved; meanwhile, due to the fact that the two ends of the sound absorption cylinder are open, a shell pass medium for heat exchange can enter and exit from the sound absorption cylinder for heat exchange, and normal heat exchange work of the core structure is not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and in particular relates to a core structure of a wound tube heat exchanger and a wound tube heat exchanger. Background Art

[0002] As a new type of high-efficiency heat exchanger, the wound tube heat exchanger has the characteristics of compact structure, high heat transfer coefficient, good thermal compensation and basically no heat transfer dead zone. It is widely used in low-temperature methanol washing, air separation, oil refining and other fields.

[0003] Existing wound tube heat exchanger structures, such as the Chinese invention patent "A wound tube heat exchanger for gas absorption" with patent number 201910358285.9 and authorization announcement number CN109999619B, and the Chinese utility model patent "Wound tube heat exchanger with cleaning structure" with patent number 202223107689.7 and authorization announcement number CN218846956U, when in use, the shell-side medium in the shell-side cylinder and the tube-side medium in the heat exchange tube perform heat exchange.

[0004] However, during heat exchange, the flow of the heat exchange medium will generate noise, and when the overall size of the heat exchanger increases, the noise will also increase, affecting the user experience. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide a core structure of a wound tube heat exchanger in view of the current status of the prior art, so as to reduce the noise during heat exchange.

[0006] The second technical problem to be solved by the utility model is to provide a wound tube heat exchanger with the core structure mentioned above.

[0007] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: a core structure of a wound tube heat exchanger, including:

[0008] Center tube;

[0009] The heat exchange tubes extend along the axial direction of the central tube and are spirally wound layer by layer from the inside to the outside on the outer periphery of the central tube to form a multi-layer spiral tube;

[0010] It is characterized by also including:

[0011] The annular sound-absorbing tube has a peripheral wall enclosing a sound-absorbing cavity with two open ends, and the peripheral wall is arranged between two adjacent layers of spiral tubes along the circumferential direction.

[0012] In this way, during heat exchange, the sound-absorbing tube of the utility model can absorb the noise generated by the heat exchange of its inner surrounding core structure, thereby achieving a noise reduction effect; at the same time, since both ends of the sound-absorbing tube are open, the shell-side medium used for heat exchange can enter and exit the sound-absorbing tube for heat exchange without affecting the normal heat exchange work of the core structure.

[0013] Preferably, there are at least two sound-absorbing tubes, which are arranged along the axial direction of the central tube.

[0014] Preferably, the inner diameters of two adjacent sound-absorbing tubes in the axial direction are different, so that the two are arranged between two corresponding adjacent layers of spiral tubes, one inside and one outside, so as to ensure that the shell-side medium for heat exchange enters and exits each sound-absorbing tube.

[0015] Furthermore, the adjacent ends of two adjacent sound-absorbing tubes in the axial direction overlap each other to form an annular gap. In this way, the noise reduction effect can be improved without affecting the

[0016] Heat exchange.

[0017] Furthermore, there are at least three sound-absorbing tubes, and the first sound-absorbing tubes with large inner diameters and the second sound-absorbing tubes with small inner diameters are alternately arranged in sequence along the axial direction of the central tube.

[0018] In the above schemes, preferably, the wall thickness of the peripheral wall of the sound absorbing tube is smaller than the distance between the adjacent layers of spiral tubes in which it is located.

[0019] Furthermore, two adjacent layers of spiral tubes are separated by axially extending gaskets, and the sound-absorbing tubes are bound together with the corresponding gaskets, thereby constraining the sound-absorbing tubes and the heat exchange tubes together, thereby improving the stability of the overall structure.

[0020] The technical solution adopted by the utility model to solve the above-mentioned second technical problem is: a wound tube heat exchanger, including a shell-side cylinder and a core structure arranged in the shell-side cylinder, characterized in that the core structure adopts the core structure as described above.

[0021] Compared with the prior art, the utility model has the advantages that: by setting an annular sound-absorbing tube, during heat exchange, the sound-absorbing tube can absorb the noise generated by the inner surrounding core structure during heat exchange, thereby achieving a noise reduction effect; at the same time, since both ends of the sound-absorbing tube are open, the shell-side medium used for heat exchange can enter and exit the sound-absorbing tube for heat exchange, without affecting the normal heat exchange work of the core structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] like Figure 1 As shown, a core structure of a wound tube heat exchanger and a preferred embodiment of the wound tube heat exchanger of the utility model are shown, and the core structure includes a central tube 1, a heat exchange tube 2 and a sound absorbing tube 3.

[0025] The central tube 1 is arranged vertically.

[0026] The heat exchange tube 2 extends along the axial direction of the central tube 1, and is spirally wound layer by layer from the inside to the outside on the outer periphery of the central tube 1 to form a multi-layer spiral tube 20. Two adjacent layers of spiral tubes 20 are separated by axially extending gaskets, and the gaskets and the connection structure between the gaskets and the heat exchange tubes are the same as the prior art (such as the Chinese utility model patent "A gasket for a wound tube heat exchanger" with patent number 202120502424.3 and authorization announcement number CN214842720U, and the Chinese utility model patent "A connection structure of heat exchange tubes of a wound tube heat exchanger" with patent number 202120502461.4 and authorization announcement number CN214842721U), which will not be repeated here.

[0027] The above-mentioned sound-absorbing tube 3 is annular, and its peripheral wall encloses a sound-absorbing cavity with open ends, and its peripheral wall is arranged between two adjacent layers of spiral tubes 20 along the circumferential direction, and the wall thickness of the peripheral wall of the sound-absorbing tube 3 is less than the spacing between the adjacent layers of spiral tubes 20, and the sound-absorbing tube 3 is constrained together with the corresponding pads. In this embodiment, there are four sound-absorbing tubes 3, which are arranged along the axial direction of the central tube 1. The inner diameters of the two adjacent sound-absorbing tubes 3 in the axial direction are different. The first sound-absorbing tube with a large inner diameter and the second sound-absorbing tube with a small inner diameter are alternately arranged along the axial direction of the central tube 1 in sequence, so that each sound-absorbing tube 3 is distributed between different layers of spiral tubes 20. At the same time, the adjacent ends of the two adjacent sound-absorbing tubes 3 in the axial direction overlap one inside and one outside to form an annular gap 31.

[0028] The wound tube heat exchanger of this embodiment includes a shell cylinder 4, a tube sheet 5 and the core structure described above. The shell cylinder 4 is arranged vertically, and the tube sheets 5 are arranged at both the upper and lower ends. The core structure is arranged in the shell cylinder 4, and the two ends of the heat exchange tube 2 are supported on the corresponding tube sheets. The peripheral wall of the sound absorbing tube 3 is spaced apart from the annular wall of the shell cylinder 4.

[0029] During heat exchange, the sound absorbing tube 3 can absorb the noise generated by the heat exchange of the inner surrounding core structure, thereby achieving a noise reduction effect; at the same time, since both ends of the sound absorbing tube 3 are open, the shell-side medium used for heat exchange can enter and exit the sound absorbing tube for heat exchange without affecting the normal heat exchange work of the core structure.

Claims

1. A core structure of a wound tube heat exchanger, comprising: Central tube (1); The heat exchange tube (2) extends along the axial direction of the central tube (1) and is spirally wound layer by layer from the inside to the outside on the outer periphery of the central tube (1) to form a multi-layer spiral tube (20); Features Also included are: The annular sound-absorbing cylinder (3) has a peripheral wall enclosing a sound-absorbing cavity with two open ends, and the peripheral wall is arranged between two adjacent layers of spiral tubes (20) along the circumferential direction.

2. The core structure according to claim 1, characterized in that: There are at least two sound-absorbing tubes (3), which are arranged along the axial direction of the central tube (1).

3. The core structure according to claim 2, characterized in that: The inner diameters of two adjacent sound-absorbing tubes (3) in the axial direction are different, so that the two are arranged, one inside and one outside, between the two corresponding adjacent layers of spiral tubes (20).

4. The core structure according to claim 3, characterized in that: Adjacent ends of two adjacent sound-absorbing tubes (3) in the axial direction overlap one inside and one outside to form an annular gap (31).

5. The core structure according to claim 4, characterized in that: There are at least three sound-absorbing tubes (3), and first sound-absorbing tubes with large inner diameters and second sound-absorbing tubes with small inner diameters are alternately arranged in sequence along the axial direction of the central tube (1).

6. The core structure according to any one of claims 1 to 5, characterized in that: The thickness of the peripheral wall of the sound-absorbing tube (3) is smaller than the distance between the adjacent layers of spiral tubes (20) where the sound-absorbing tube (3) is located.

7. The core structure according to claim 6, characterized in that: Two adjacent layers of spiral tubes (20) are separated by axially extending gasket strips, and the sound-absorbing tube (3) is constrained together with the corresponding gasket strips.

8. A wound tube heat exchanger, comprising a shell-side cylinder (4) and a core structure arranged in the shell-side cylinder (4), characterized in that The core structure adopts the core structure as claimed in any one of claims 1 to 7.

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