A spiral tube bundle heat exchanger

Abstract

The utility model provides a kind of helical pipe bundle heat exchanger, it includes the shell of cylindrical structure, helical pipe bundle is fixedly arranged from one end to the other end in shell, and still fixedly connected with the first inlet pipe and the first outlet pipe respectively with the both ends of helical pipe bundle are communicated on shell, still self-rotating setting has mounting shaft in shell and helical pipe bundle encircles in mounting shaft outer, still fixedly encircles with helical blade on mounting shaft;Second inlet pipe and second outlet pipe located at both ends are still fixedly connected on shell.The utility model solves the problem that the overall heat exchange efficiency cannot be improved due to the low efficiency of shell-side material flow in the prior art.

Description

Technical Field

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

[0002] Helical tube bundles are widely used and generally consist of a cylindrical shell and a helical tube bundle arranged from one end to the other within it. The shell has a first inlet and a first outlet pipe connected to both ends of the helical tube bundle, and a second inlet and a second outlet pipe connected to the interior of the shell. The second inlet and the second outlet pipe introduce and exit the heat exchange medium into and out of the shell, while the first inlet and the first outlet pipe introduce and exit the material into and out of the helical tube bundle. This allows for indirect contact between the material and the heat exchange medium within the shell to achieve heat exchange (or alternatively, the material enters the shell and the heat exchange medium enters the helical tube bundle). In actual operation, the material flow efficiency in the shell side (i.e., inside the shell and outside the helical tube bundle) is relatively slow, resulting in relatively low contact efficiency with the helical tube bundle, and thus the overall heat exchange efficiency is not improved. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a spiral tube bundle heat exchanger, which solves the problem that the low shell-side material flow efficiency in existing technologies leads to the failure to improve the overall heat exchange efficiency.

[0004] According to an embodiment of this utility model, a spiral tube bundle heat exchanger includes a cylindrical shell. A spiral tube bundle is fixedly arranged from one end to the other inside the shell. A first inlet pipe and a first outlet pipe, respectively connected to both ends of the spiral tube bundle, are fixedly connected to the shell. An installation shaft is also rotatably arranged inside the shell, with the spiral tube bundle surrounding the installation shaft. Spiral blades are fixedly arranged around the installation shaft. A second inlet pipe and a second outlet pipe are also fixedly connected to both ends of the shell. In this design, the spiral blades rotating with the installation shaft are arranged inside the spiral tube bundle (i.e., the spiral tube bundle surrounds the spiral blades). This allows the shell-side material to not only experience axial movement, generating axial flow, but also radial vortex flow. The interaction between the axial flow and radial vortex flow forms severe turbulence, resulting in more complete heat exchange and significantly improving heat exchange efficiency. This solves the problem in the prior art where low shell-side material flow efficiency leads to insufficient overall heat exchange efficiency.

[0005] Furthermore, multiple support rods arranged along its axial direction are fixedly connected to the inner wall of the shell, and the helical tube bundle is fixedly connected to the multiple support rods.

[0006] Furthermore, the helical tube bundle includes two sets coaxially surrounding the mounting shaft, and the two ends of the two sets of helical tube bundles are respectively connected to two first inlet tubes and two first outlet tubes.

[0007] Furthermore, both ends of the support rod are fixedly connected to the inner wall of the housing via connecting rods.

[0008] Furthermore, support frames are fixedly connected to both ends of the housing, and rotating sleeves that are rotatably mounted on the support frames are fixedly connected to the support frames.

[0009] Furthermore, the helical blade is located between the two rotating sleeves.

[0010] Furthermore, a support base is fixedly connected to the outer wall of the middle section of the shell.

[0011] Furthermore, a driver is also provided outside the housing to drive the mounting shaft to rotate.

[0012] Furthermore, mounting plates are fixedly connected to both the first inlet pipe and the first outlet pipe, and the spiral tube bundle includes multiple spiral heat exchange tubes whose two ends are fixedly connected to the two mounting plates respectively.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] By setting a helical blade that rotates with the mounting shaft inside the helical tube bundle (i.e., the helical tube bundle surrounds the helical blade) within the shell, the shell-side material can not only have axial movement, generating axial flow, but also radial vortex flow. The interaction between the axial flow and the radial vortex flow forms severe turbulence, making heat exchange more complete and thus greatly improving the heat exchange efficiency. This solves the problem in the prior art where the low shell-side material flow efficiency leads to the failure to improve the overall heat exchange efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of another embodiment of the present utility model;

[0017] Figure 3 This is a partially enlarged schematic diagram of the connection structure between the support rod and the inner wall of the housing in an embodiment of this utility model;

[0018] Figure 4 This is a top view of the support frame structure according to an embodiment of the present utility model;

[0019] Figure 5 This is a schematic diagram of the connection structure between the first outlet tube and the spiral tube bundle in an embodiment of the present utility model;

[0020] In the above attached figures:

[0021] 1. Shell; 2. Spiral tube bundle; 3. First inlet tube; 4. First outlet tube; 5. Mounting shaft; 6. Spiral blade; 7. Second inlet tube; 8. Second outlet tube; 9. Driver; 10. Support base; 11. Support rod; 12. Connecting rod; 13. Support frame; 14. Rotating sleeve; 15. Mounting plate; 16. Spiral heat exchange tube. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] In an exemplary implementation, such as Figure 1-3 As shown, this embodiment provides a spiral tube bundle heat exchanger, which includes a cylindrical shell 1. The shell 1 may be vertically arranged. A spiral tube bundle 2 is fixedly arranged inside the shell 1 from one end to the other. A first inlet pipe 3 and a first outlet pipe 4, respectively communicating with the two ends of the spiral tube bundle 2, are also fixedly connected to the shell 1. In one embodiment ( Figure 1 As shown), the two ends of the housing 1 are hemispherical structures. The first outlet pipe 4 can be located on the upper side of the housing 1, the first inlet pipe 3 can be located on the lower side of the housing 1, the second inlet pipe 7 can be located on the lower end side of the housing 1, and the second outlet pipe 8 can be located on the upper end side of the housing 1. In another embodiment ( Figure 2As shown, the two ends of the housing 1 are flat plate structures. The first outlet pipe 4 can be located at the top of the upper end of the housing 1, the first inlet pipe 3 can be located at the bottom of the lower end of the housing 1, the second inlet pipe 7 can be located on the side of the lower end of the housing 1, and the second outlet pipe 8 can be located on the side of the upper end of the housing 1. A mounting shaft 5 is also rotatably mounted inside the housing 1, and a spiral tube bundle 2 surrounds the mounting shaft 5. A spiral blade 6 is also fixedly mounted around the mounting shaft 5. The housing 1 is also fixedly connected to the second inlet pipe 7 and the second outlet pipe 8 located at its two ends. In both of these embodiments, a spiral tube bundle 2 (i.e., the spiral tube bundle 2 surrounds the spiral blade 6) is provided inside the spiral tube bundle 2. The spiral blades 6 that rotate with the mounting shaft 5 enable the shell-side material to not only move axially, generating axial flow, but also to have radial vortex flow. The interaction between the axial flow and the radial vortex flow creates severe turbulence, making heat exchange more thorough and thus greatly improving heat exchange efficiency. This solves the problem in the prior art where the low shell-side material flow efficiency leads to the failure to improve the overall heat exchange efficiency. Furthermore, the spiral tube bundles 2 can be multiple sets, such as two sets coaxially surrounding the mounting shaft 5, with the two ends of the two sets of spiral tube bundles 2 connected to the two first inlet pipes 3 and the two first outlet pipes 4, respectively, so that multiple sets of heat exchange can occur simultaneously.

[0025] In further proposals, such as Figure 1 , 2 As shown, a driver 9 is also provided outside the housing 1 to drive the mounting shaft 5 to rotate. The driver 9 can be a drive motor, which is fixedly installed at the top of the housing 1. When the drive motor runs, it drives the mounting shaft 5 to rotate. A support base 10 is also fixedly connected to the outer wall of the middle section of the housing 1. The support base 10 can be a pair or more, so as to facilitate connection with the mounting base (such as a mounting frame), thereby enabling the housing 1 to achieve stable vertical installation.

[0026] like Figure 1 , 2 As shown in Figure 3, in order to improve the stability of the helical tube bundle 2, multiple support rods 11 arranged along its axial direction are fixedly connected to the inner wall of the shell 1. The helical tube bundle 2 is fixedly connected to the multiple support rods 11, and the two ends of the support rods 11 can be fixed to the inner wall of the shell 1 through the connecting rods 12. In this way, the support rods 11 can provide stable support for the helical tube bundle 2 and improve the stability of the helical tube bundle 2.

[0027] like Figure 1 , 2 As shown in Figure 4, in order to improve the running stability of the mounting shaft 5, support frames 13 are fixedly connected to both ends of the housing 1, and rotating sleeves 14 are fixedly connected to the support frames 13. The rotating sleeves 14 are located outside the mounting shaft 5, and the spiral blade 6 is located between the two rotating sleeves 14. In this way, the two support frames 13 provide rotational support for the mounting shaft 5 at the upper and lower ends, so that the mounting shaft 5 can rotate more smoothly.

[0028] like Figure 1 , 2 As shown in Figure 5, in a more detailed scheme, the spiral tube bundle 2 includes multiple spiral heat exchange tubes 16. That is, mounting plates 15 are fixedly connected to both the first inlet pipe 3 and the first outlet pipe 4. The spiral tube bundle 2 includes multiple spiral heat exchange tubes 16 that are fixedly connected to the two mounting plates 15 at both ends, and each spiral heat exchange tube 16 can be fixedly connected to the support rod 11 for stability.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A spiral tube bundle heat exchanger, characterized by, The device includes a cylindrical shell, inside which a helical tube bundle is fixedly installed from one end to the other. A first inlet pipe and a first outlet pipe, respectively connected to the two ends of the helical tube bundle, are also fixedly connected to the shell. An installation shaft is also installed inside the shell and the helical tube bundle is wrapped around the installation shaft. A helical blade is also fixedly wrapped around the installation shaft. A second inlet pipe and a second outlet pipe located at both ends of the shell are also fixedly connected to the shell.

2. The spiral wound heat exchanger of claim 1, wherein, Multiple support rods arranged along its axial direction are also fixedly connected to the inner wall of the shell, and the helical tube bundle is fixedly connected to the multiple support rods.

3. The spiral tube bundle heat exchanger as described in claim 2, characterized in that, The helical tube bundle includes two sets coaxially surrounding the mounting shaft, and the two ends of the two sets of helical tube bundles are respectively connected to two first inlet tubes and two first outlet tubes.

4. The spiral tube bundle heat exchanger as described in claim 3, characterized in that, Both ends of the support rod are fixedly connected to the inner wall of the housing via connecting rods.

5. The spiral tube bundle heat exchanger as described in claim 1, characterized in that, Support frames are fixedly connected to both ends of the housing, and rotating sleeves that are rotatably mounted on the support frames are fixedly connected to the mounting shaft.

6. The spiral tube bundle heat exchanger as described in claim 5, characterized in that, The spiral blade is located between the two rotating sleeves.

7. The spiral tube bundle heat exchanger as described in any one of claims 1-6, characterized in that, A support base is fixedly connected to the outer wall of the middle section of the shell.

8. The spiral tube bundle heat exchanger as described in claim 7, characterized in that, A drive unit is also installed outside the housing to drive the mounting shaft to rotate.

9. The spiral tube bundle heat exchanger as described in claim 1, characterized in that, The first inlet tube and the first outlet tube are each fixedly connected to an installation plate. The spiral tube bundle includes multiple spiral heat exchange tubes that are fixedly connected to the two installation plates at both ends.

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