Winding pipe type reboiler

Abstract

A winding pipe type reboiler comprises a spherical shell with a hollow interior, the bottom of the spherical shell is provided with a shell pass inlet connecting pipe, and the top of the spherical shell is provided with a shell pass outlet connecting pipe; the first tube plate and the second tube plate are oppositely arranged on the left side and the right side of the spherical shell, a first tube box with a first tube pass connecting tube is arranged on the first tube plate, and a second tube box with a second tube pass connecting tube is arranged on the second tube plate; the first end of the heat exchange tube is supported on the first tube plate and communicates with the first tube pass connecting tube, the heat exchange tube is coiled layer by layer from inside to outside to form multiple annular layers, and the adjacent annular layers are arranged at an included angle, so that the heat exchange tube is integrally spherical; and the second end of the heat exchange tube is supported on the second tube plate and is communicated with the second tube pass connecting tube. The heat exchanger is good in heat exchange effect and capable of reducing steam resistance.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and particularly relates to a wound tube reboiler. Background Art

[0002] A reboiler, also known as a heating kettle or reboiler, is a heating device that vaporizes the liquid being distilled. The liquid expands or even vaporizes due to heat in the reboiler, and its density decreases, thus leaving the reboiler.

[0003] For example, the Chinese utility model patent "A Reboiler" with application number 201721631036.5 and authorization announcement number CN207627965U includes a shell, a medium inlet is provided at the bottom of the shell, a medium outlet is provided at the top, the shell has an inner shell wall and an outer shell wall, the inner shell wall is corrugated from top to bottom, there is a cavity between the inner shell wall and the outer shell wall, a heat conduction pipe is wound in the cavity, the heat conduction pipe is provided with a feed port extending out of the shell at the top of the shell, and a discharge port is provided outside the shell at the bottom of the shell; an upper fixed plate is provided at the top of the shell, and a lower fixed plate is provided at the bottom, and flow holes are provided on the upper fixed plate and the lower fixed plate, and a number of heat exchange tubes are vertically arranged between the upper fixed plate and the lower fixed plate, and the heat exchange tubes are corrugated.

[0004] Another example is the Chinese utility model patent "A high-efficiency reboiler for a distillation device" with application number 201721624304.0 and authorization announcement number CN208177009U. The reboiler is arranged at the bottom of the distillation tower and the reboiler is connected to the distillation tower. The reboiler adopts a spirally wound tube heat exchanger.

[0005] The existing reboiler has the technical problem of how to ensure the heat exchange effect while reducing the steam resistance and facilitating the discharge of the gas phase medium. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a wound tube type reboiler with good heat exchange effect and favorable output of gas phase medium in view of the current status of the existing technology.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: a wound tube reboiler, characterized in that it includes:

[0008] The spherical shell is hollow inside, with a shell-side inlet pipe at the bottom and a shell-side outlet pipe at the top;

[0009] A first tube sheet and a second tube sheet are disposed on the left and right sides of the spherical shell opposite to each other, and the first tube sheet is provided with a first tube box with a first tube-side connecting pipe, and the second tube sheet is provided with a second tube box with a second tube-side connecting pipe;

[0010] The heat exchange tube has a first end supported on the first tube sheet and connected to the first tube-side connecting pipe. The heat exchange tube is coiled layer by layer from the inside to the outside into multiple annular layers, and adjacent annular layers are arranged at an angle so that the heat exchange tube as a whole is spherical. The second end of the heat exchange tube is supported on the second tube sheet and connected to the second tube-side connecting pipe.

[0011] The heat exchange tube may be a single tube or at least two tubes. When there are at least two heat exchange tubes, the heat exchange tubes are arranged side by side and then wound together from the inside to the outside to form a spherical shape.

[0012] During use, the liquid medium input from the shell-side inlet pipe at the bottom of the shell exchanges heat with the heat medium in the heat exchange tube, and the vaporized gas medium flows upward and is output from the shell-side outlet pipe at the top of the shell. Since the shell is spherical, the resistance of the gas medium when flowing upward can be reduced. At the same time, since the heat exchange tube is spherical as a whole and matches the shape of the shell, the heat medium in the heat exchange tube can fully exchange heat with the liquid medium in the shell, and the heat exchange effect is good.

[0013] In order to further improve the heat exchange effect, preferably, adjacent annular layers are arranged at intervals and constrained together by a positioning assembly.

[0014] Preferably, the portions of the heat exchange tube corresponding to adjacent annular layers are respectively referred to as the first portion and the second portion;

[0015] The positioning component includes:

[0016] a first pipe clamp having a first recess for matching with the outer peripheral wall of the first portion of the heat exchange tube;

[0017] a second pipe clamp having a second recess for matching with the outer peripheral wall of the second portion of the heat exchange tube;

[0018] A protrusion and a slot are respectively provided on the outer wall surface of the first recess and the outer wall surface of the second recess. The protrusion is rotatably engaged in the slot, so that the first pipe clamp and the second pipe clamp can be relatively rotatably constrained together.

[0019] In this way, the present invention can rotate the first tube clamp and the second tube clamp according to the winding angle between the first portion and the second portion of the adjacent annular layers of the heat exchange tube to constrain the first heat exchange tube and the second heat exchange tube together.

[0020] To facilitate assembly of the pipe clamp and the heat exchange tube, preferably, the first recess and the second recess are both C-shaped, and the C-shaped openings of the first recess and the second recess are respectively for the first part and the second part of the corresponding heat exchange tube to be clamped in.

[0021] During assembly, the heat exchange tube can be inserted into the tube clamp through the C-shaped opening, which is convenient for operation. The tube clamp can better restrain the heat exchange tube to prevent the heat exchange tube from accidentally detaching.

[0022] Furthermore, the C-shaped opening of the first recess is oriented downward;

[0023] The second pipe hoop is located on the upper side of the first pipe hoop, and the C-shaped opening of the second recess faces upward;

[0024] The protrusion and the groove are respectively located at the top of the first pipe hoop and the bottom of the second pipe hoop.

[0025] In order to be able to adjust the angle, preferably, the protrusion is spherical, and correspondingly, the groove is a ball socket, so that the first pipe hoop and the second pipe hoop are connected in a ball joint.

[0026] Compared with the prior art, the advantages of the present invention are: when in use, the liquid medium input from the shell-side inlet pipe at the bottom of the shell exchanges heat with the heat medium in the heat exchange tube, and the vaporized gas medium flows upward and is output from the shell-side outlet pipe at the top of the shell. Moreover, since the shell is spherical, the resistance of the gas medium when flowing upward can be reduced. At the same time, since the heat exchange tube is spherical as a whole and matches the shape of the shell, the heat medium in the heat exchange tube can fully exchange heat with the liquid medium in the shell, and the heat exchange effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0028] Figure 2 This is a cross-sectional view of the positioning assembly in the embodiment of the present utility model when in use;

[0029] Figure 3 for Figure 2 Enlarged view of part A in the middle. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0031] like Figures 1 to 3 FIG. 1 shows a preferred embodiment of a wound tube reboiler of the present invention. The wound tube reboiler includes a shell 4, a first tube sheet 5, a second tube sheet 6, a heat exchange tube 3 and a positioning assembly.

[0032] The shell 4 is in the shape of a sphere with a hollow interior. A shell-side inlet pipe 41 is provided at the bottom of the shell 4 , and a shell-side outlet pipe 42 is provided at the top.

[0033] The first tube sheet 5 and the second tube sheet 6 are arranged on the left and right sides of the spherical shell 4 opposite to each other, and the first tube sheet 5 is provided with a first tube box 52 with a first tube-side connecting pipe 51, and the second tube sheet 6 is provided with a second tube box 62 with a second tube-side connecting pipe 61.

[0034] The first end of the heat exchange tube 3 is supported by the first tube sheet 5 and connected to the first tube-side connecting pipe 51. The heat exchange tube 3 is wound layer by layer from the inside out into multiple annular layers, with adjacent annular layers arranged at an angle, giving the heat exchange tube 3 an overall spherical shape. The second end of the heat exchange tube 3 is supported by the second tube sheet 6 and connected to the second tube-side connecting pipe 61. After winding one circle of the inner annular layer, the direction is changed and the outer annular layer is wound one circle, until the outermost annular layer is wound. The winding method is similar to that of a ball of yarn.

[0035] At the same time, adjacent annular layers are spaced apart and are constrained together by a positioning assembly. The portions of the heat exchange tube 3 corresponding to adjacent annular layers are respectively referred to as the first portion 31 and the second portion 32. The positioning assembly includes a first pipe clamp 1 and a second pipe clamp 2.

[0036] The first pipe clamp 1 has a first recess 10 for matching with the outer peripheral wall of the first portion 31 of the heat exchange tube 3. The first recess 10 is C-shaped, and the C-shaped opening is for the first portion 31 of the heat exchange tube 3 to be inserted into the first recess 10. In this embodiment, Figure 2 As shown, the C-shaped opening of the first recess 10 faces downward.

[0037] The second pipe clamp 2 is located on the upper side of the first pipe clamp 1, and the second pipe clamp 2 has a second recess 20 for matching with the outer peripheral wall of the second portion 32 of the heat exchange tube 3. The second recess 20 is C-shaped, with the C-shaped opening facing upward and allowing the corresponding second portion 32 of the heat exchange tube 3 to be inserted into the second recess 20.

[0038] At the same time, if Figure 3 As shown, a protrusion 11 is provided on the top of the outer wall of the first recess 10, and the protrusion 11 is spherical. A slot 21 is provided on the bottom of the outer wall of the second recess 20, and the slot 21 is a ball socket adapted to the protrusion 11. The protrusion 11 is clamped in the slot 21 in a manner that allows it to rotate freely in multiple directions, thereby making the first pipe hoop 1 and the second pipe hoop 2 connected by a spherical hinge so that the axial directions of the two are arranged at an angle, as shown in FIG. Figure 2 As shown, the first and second parts of the heat exchange tubes constrained on the first and second tube clamps are also arranged at an angle. Figure 2 The first heat exchange tube 31 extends left and right, and the second heat exchange tube 32 extends front and back, and the two are perpendicular to each other.

[0039] In this way, the positioning assembly of this embodiment can be used to position the first and second parts of the adjacent inner and outer layers of the heat exchange tube, and the first pipe clamp 1 and the second pipe clamp 2 can be rotated according to the winding angle between the first and second parts of the adjacent heat exchange tubes to constrain the first and second parts of the heat exchange tube together.

[0040] At the same time, the vertical distance H between the bottom of the inner wall of the second recess 20 and the top of the inner wall of the first recess 10 is the interlayer distance between the first and second parts of the adjacent heat exchange tubes. Figure 3 .

[0041] At the same time, in order to facilitate winding, the heat exchange tube of this embodiment is required to have good flexibility and a small diameter.

[0042] In the specification and claims of the present invention, directional terms such as "front," "back," "up," "down," "left," "right," "side," "top," and "bottom" are used to describe various exemplary structural parts and components of the present invention. However, these terms are used herein for convenience of description only and are based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different orientations, these directional terms are intended for illustrative purposes only and should not be construed as limiting. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A wound tube reboiler, characterized in that Includes: A spherical shell (4) with a hollow interior has a shell-side inlet pipe (41) at its bottom and a shell-side outlet pipe (42) at its top; The first tube sheet (5) and the second tube sheet (6) are arranged on the left and right sides of the spherical shell (4) opposite to each other, and the first tube sheet (5) is provided with a first tube box (52) with a first tube-side connecting pipe (51), and the second tube sheet (6) is provided with a second tube box (62) with a second tube-side connecting pipe (61); A heat exchange tube (3) having a first end supported on the first tube sheet (5) and connected to the first tube-side connecting pipe (51); the heat exchange tube (3) is wound layer by layer from the inside to the outside into multiple annular layers, and adjacent annular layers are arranged at an angle so that the heat exchange tube (3) is spherical as a whole; and a second end of the heat exchange tube (3) is supported on the second tube sheet (6) and connected to the second tube-side connecting pipe (61).

2. The wound tube reboiler according to claim 1, characterized in that: Adjacent annular layers are arranged at intervals and are constrained together by positioning components.

3. The wound tube reboiler according to claim 2, characterized in that: The portions of the heat exchange tube (3) corresponding to adjacent annular layers are respectively referred to as the first portion (31) and the second portion (32); The positioning component includes: A first pipe hoop (1) having a first recess (10) for matching with the outer peripheral wall of the first portion (31) of the heat exchange tube (3); A second pipe clamp (2) having a second recess (20) for matching with the outer peripheral wall of the second portion (32) of the heat exchange tube (3); A protrusion (11) and a clamping groove (21) are respectively provided on the outer wall surface of the first recess (10) and the outer wall surface of the second recess (20); the protrusion (11) is rotatably clamped in the clamping groove (21), so that the first pipe hoop (1) and the second pipe hoop (2) can be constrained together in relative rotation.

4. The wound tube reboiler according to claim 3, characterized in that: The first recess (10) and the second recess (20) are both C-shaped, and the C-shaped openings of the first recess (10) and the second recess (20) are respectively provided for the first part (31) and the second part (32) of the corresponding heat exchange tube (3) to be inserted.

5. The wound tube reboiler according to claim 4, characterized in that: The C-shaped opening of the first recess (10) is oriented downward; The second pipe hoop (2) is located on the upper side of the first pipe hoop (1), and the C-shaped opening of the second recess (20) faces upward; The protrusion (11) and the clamping groove (21) are respectively located at the top of the first pipe hoop (1) and the bottom of the second pipe hoop (2).

6. The wound tube reboiler according to any one of claims 3 to 5, characterized in that: The protrusion (11) is spherical, and correspondingly, the clamping groove (21) is a ball socket, thereby enabling a spherical joint connection between the first pipe hoop (1) and the second pipe hoop (2).

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