Shell-and-tube heat exchanger tube nest with flow guide spiral

Abstract

The utility model provides a shell-and-tube heat exchanger tube nest with flow guide spirals, and relates to the field of heat exchangers. The heat exchanger comprises a tube nest, and a flow guide assembly used for improving the heat exchange efficiency is arranged in the tube nest. The heat exchanger has the effect of improving the heat exchange efficiency.

Description

Technical Field

[0001] The present application relates to the field of heat exchangers, and in particular to a shell and tube heat exchanger tube with a guide spiral. Background Art

[0002] Shell-and-tube heat exchangers, also known as tubular heat exchangers, are a commonly used type of heat exchange equipment. They consist of a bundle of tubes, each secured to a tube sheet. While widely used due to their robust structure, high reliability, adaptability, and ability to withstand high temperatures and high pressures, shell-and-tube heat exchangers also have drawbacks such as low heat transfer efficiency.

[0003] Currently, the traditional approach to improving the heat transfer efficiency of shell-and-tube heat exchangers is to increase the surface area of ​​the tubes or use high-efficiency heat transfer materials. However, while these technologies can improve heat transfer efficiency to a certain extent, they also increase costs, especially when using better heat transfer materials, and the potential for improvement is limited. Utility Model Content

[0004] In order to improve the problems existing in the above-mentioned technology, the present application provides a shell and tube heat exchanger tube with a guide spiral.

[0005] The present application provides a shell and tube heat exchanger tube with a flow guide spiral, which adopts the following technical solution:

[0006] A shell and tube heat exchanger tube with a flow-guiding spiral comprises a tube, wherein a flow-guiding component for improving heat exchange efficiency is arranged inside the tube.

[0007] By adopting the above technical solution, the flow guide component can greatly increase the contact time and area between the fluid and the inner wall of the tube, thereby improving the heat exchange efficiency; and can reduce costs.

[0008] Optionally, the flow guide assembly includes spiral blades, which are fixed in the tube array.

[0009] By adopting the above technical solution, after the fluid enters the tube, it is guided by the guide spiral blades and the flow direction of the fluid will change from the original straight line flow to flow along a spiral path, thereby greatly increasing the contact time and area between the fluid and the inner wall of the tube, thereby improving the heat exchange efficiency.

[0010] Optionally, the pitch of the spiral blade decreases from large to small and then increases from one end of the tube array to the other end.

[0011] By adopting the above technical solution, when the fluid just enters the tube array, the fluid can smoothly enter the spiral flow state due to the large pitch; as the pitch gradually decreases, the contact frequency between the fluid and the tube wall is increased; when the fluid is about to flow out of the tube array, the pitch increases again to reduce the outflow resistance of the fluid.

[0012] Optionally, a plurality of grooves are provided on the spiral leaf, and a plurality of protrusions are provided on the spiral leaf.

[0013] By adopting the above technical solution and utilizing the cooperation between the grooves and the protrusions, tiny eddies can be generated when the fluid flows through the tubes, thereby destroying the laminar flow state of the fluid and enhancing the heat transfer effect.

[0014] Optionally, the flow guide assembly includes: multiple groups of flow guide parts, each of which is composed of a first flow guide plate and a second flow guide plate, and the first flow guide plate and the second flow guide plate are both fixed in the array of tubes.

[0015] By adopting the above technical solution, a serpentine channel can be formed in the tube array by disposing multiple groups of first guide plates and second guide plates of the guide parts, thereby increasing the flow time of the fluid and improving the heat exchange efficiency.

[0016] Optionally, the guide assembly further includes: a connecting piece, which is fixed between each group of the first guide plates and the second guide plates, and a connecting hole is formed through the connecting piece, and the inner diameter of the connecting hole increases from small to large.

[0017] By adopting the above technical solution, since the inner diameter of the communicating hole is continuously reduced, the flow velocity of the fluid will be greatly reduced, thereby improving the heat exchange efficiency.

[0018] Optionally, a mounting assembly is provided between the first guide plate and the second guide plate and the array tubes, and the mounting assembly includes: a mounting plate, a first magnet and a second magnet; a mounting groove is provided on the array tube, the first magnet is fixed in the mounting groove, the mounting plate is provided in the mounting groove, and the first guide plate and the second guide plate are both fixed on the corresponding mounting plates, the second magnet is fixed on the mounting plate, and the first magnet is magnetically attracted to the second magnet.

[0019] By adopting the above technical solution, after the mounting plate is fully inserted into the mounting groove, the first magnetic block and the second magnetic block attract each other, thereby fixing the mounting plate in the mounting groove, so that the first guide plate and the second guide plate are not likely to fall out of the tube array.

[0020] Optionally, the mounting assembly further includes: a locking rod and a locking spring, a receiving hole is provided on the mounting plate, a locking hole is provided through the tube, one end of the locking rod is arranged in the locking hole, and the other end is arranged in the receiving hole, and the locking spring is fixed between the locking rod and the bottom of the receiving hole.

[0021] By adopting the above technical solution, when disassembling, the locking rod is pressed to compress the locking spring until the locking rod is completely pressed into the accommodating hole, and the lock can be released.

[0022] In summary, this application has at least one of the following beneficial effects:

[0023] 1. The flow guide assembly can greatly increase the contact time and area between the fluid and the inner wall of the tube, thereby improving the heat exchange efficiency and reducing costs.

[0024] 2. After the fluid enters the tube, it is guided by the guide spiral blades and the flow direction of the fluid will change from the original straight line flow to flow along a spiral path, thereby greatly increasing the contact time and area between the fluid and the inner wall of the tube, thereby improving the heat exchange efficiency.

[0025] 3. By combining the grooves and protrusions, tiny eddies can be generated when the fluid flows through the tubes, thereby destroying the laminar flow state of the fluid and enhancing the heat transfer effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a structural diagram according to the first embodiment of the present application;

[0027] Figure 2 This is a schematic structural diagram according to the second embodiment of the present application;

[0028] Figure 3 It is along Figure 2 A schematic cross-sectional view taken along the cutting line AA in FIG.

[0029] Figure 4 yes Figure 3 A schematic partial enlarged view of part B;

[0030] Figure 5 This is a structural diagram according to the third embodiment of the present application;

[0031] Figure 6 It is along Figure 5 A schematic cross-sectional view taken along the cutting line CC in FIG.

[0032] Figure 7 yes Figure 6 Schematic partial enlarged view of part D in the figure.

[0033] In the figure: 1. tube array; 11. mounting groove; 12. locking hole; 2. guide assembly; 21. spiral blade; 211. groove; 212. protrusion; 3. guide part; 31. first guide plate; 32. second guide plate; 33. connecting piece; 331. connecting hole; 4. mounting assembly; 41. mounting plate; 411. accommodating hole; 42. magnet block 1; 43. magnet block 2; 44. locking rod; 45. locking spring. DETAILED DESCRIPTION

[0034] The present application provides a shell and tube heat exchanger tube with a guide spiral.

[0035] Example 1:

[0036] See also Figure 1 A shell and tube heat exchanger tube 1 with a guide spiral includes: a tube 1, a guide component 2 is arranged in the tube 1, and the guide component 2 can greatly increase the contact time and area between the fluid and the inner wall of the tube 1, thereby improving the heat exchange efficiency; and can reduce costs.

[0037] See also Figure 1 The flow guide component 2 includes: spiral blades 21, which are fixed in the tube array 1. After the fluid enters the tube array 1, the flow direction of the fluid will change under the guidance of the guide spiral blades 21, from the original straight line flow to flow along a spiral path, thereby greatly increasing the contact time and area between the fluid and the inner wall of the tube array 1, thereby improving the heat exchange efficiency.

[0038] The working principle of the first embodiment is as follows: after the fluid enters the tube array 1, it is guided by the guide spiral blades 21, and the flow direction of the fluid will change from the original straight line flow to flow along a spiral path, thereby greatly increasing the contact time and area between the fluid and the inner wall of the tube array 1, thereby improving the heat exchange efficiency.

[0039] Example 2:

[0040] See also Figure 2 and Figure 3 The difference between this embodiment and the first embodiment is that the pitch of the spiral blade 21 decreases from large to small and then increases from one end of the tube array 1 to the other end. When the fluid just enters the tube array 1, the pitch is large, so the fluid can smoothly enter the spiral flow state; as the pitch gradually decreases, the contact frequency between the fluid and the tube wall is increased; when the fluid is about to flow out of the tube array 1, the pitch increases again to reduce the outflow resistance of the fluid.

[0041] See also Figure 4 Furthermore, a plurality of grooves 211 are provided on the spiral leaf 21 and along the length direction of the spiral leaf 21; and a plurality of protrusions 212 are provided on the spiral leaf 21 and along the length direction of the spiral leaf 21. By utilizing the cooperation of the grooves 211 and the protrusions 212, tiny vortices can be generated when the fluid flows through the tube array 1, thereby destroying the laminar flow state of the fluid and enhancing the heat transfer effect.

[0042] The working principle of the second embodiment is as follows: when the fluid just enters the tube array 1, the pitch is large, so the fluid can smoothly enter the spiral flow state; as the pitch gradually decreases, the contact frequency between the fluid and the tube wall is increased; when the fluid is about to flow out of the tube array 1, the pitch increases again to reduce the outflow resistance of the fluid.

[0043] Example 3:

[0044] See also Figure 5 and Figure 6 This embodiment differs from the first embodiment in that the flow guide assembly 2 includes: multiple groups of flow guides 3, multiple groups of flow guide plates fixed within the tube array 1, and evenly distributed along the length of the tube array 1. The flow guides 3 of this embodiment of the present application are composed of a first flow guide plate 31 and a second flow guide plate 32. The first flow guide plate 31 and the second flow guide plate 32 are both fixed within the tube array 1. The first flow guide plate 31 and the second flow guide plate 32 are opposite and staggered. The arrangement of the multiple groups of first flow guide plates 31 and second flow guide plates 32 of the flow guides 3 forms a serpentine channel within the tube array 1, thereby increasing the flow time of the fluid and improving the heat exchange efficiency.

[0045] See also Figure 6 Furthermore, an installation component 4 is provided between the first guide plate 31 and the second guide plate 32 and the tube array 1. The installation component 4 is used to quickly install and disassemble the first guide plate 31 and the second guide plate 32, thereby facilitating regular cleaning of the first guide plate 31 and the second guide plate 32 to reduce dust on the first guide plate 31 and the second guide plate 32, thereby improving heat exchange efficiency.

[0046] See also Figure 6 The mounting assembly 4 includes: a mounting plate 41, a magnetic block 1 42 and a magnetic block 2 43. A mounting groove 11 is opened on the end wall of the array tube 1 and along the length direction of the array tube 1. In the embodiment of the present application, the mounting groove 11 is in a "convex" shape. The mounting plate 41 is arranged in the mounting groove 11. The first guide plate 31 is fixed on the corresponding mounting plate 41, and the second guide plate 32 is fixed on the corresponding mounting plate 41. In the embodiment of the present application, all the first guide plates 31 correspond to one mounting plate 41, and all the second guide plates 32 correspond to one mounting plate 41. During installation, the mounting plate 41 is inserted into the mounting groove 11, and the first guide plate 31 and the second guide plate 32 can be installed in the array tube 1.

[0047] See also Figure 6 , magnetic block 1 42 is fixed in the mounting groove 11; magnetic block 2 43 is fixed on the mounting plate 41, and magnetic block 1 42 and magnetic block 2 43 are magnetically attracted to each other. After the mounting plate 41 is fully inserted into the mounting groove 11, magnetic block 1 42 and magnetic block 2 43 are attracted to each other, thereby fixing the mounting plate 41 in the mounting groove 11, so that the first guide plate 31 and the second guide plate 32 are not easy to fall out of the tube array 1.

[0048] See also Figure 7Furthermore, the mounting assembly 4 also includes: a locking rod 44 and a locking spring 45. The side wall of the mounting plate 41 is provided with a receiving hole 411, and the side wall of the tube 1 is penetrated by a locking hole 12; one end of the locking rod 44 is arranged in the locking hole 12, and the other end is arranged in the receiving hole 411. The locking rod 44 can further lock the mounting plate 41, so that the mounting plate 41 is less likely to fall off from the mounting groove 11.

[0049] See also Figure 7 One end of the locking spring 45 is fixed to the locking rod 44, and the other end is fixed to the bottom of the accommodating hole 411. The locking spring 45 is used to push the locking rod 44 into the locking hole 12; and when disassembling, press the locking rod 44 to compress the locking spring 45 until the locking rod 44 is completely pressed into the accommodating hole 411 to release the lock.

[0050] See also Figure 6 Furthermore, the flow guide assembly 2 also includes a connecting piece 33, which is fixed between each set of first flow guide plates 31 and second flow guide plates 32. The connecting piece 33 connects the first flow guide plates 31 and the second flow guide plates 32 to form a whole, thereby improving the strength of the tube array 1. The connecting piece 33 is penetrated by a plurality of communication holes 331, and the inner diameter of the communication holes 331 decreases from top to bottom. As the inner diameter of the communication holes 331 decreases, the fluid flow rate is greatly reduced, thereby improving heat exchange efficiency.

[0051] The working principle of the third embodiment is as follows: during installation, the installation plate 41 is inserted into the installation groove 11 , and the first guide plate 31 and the second guide plate 32 can be installed in the tube array 1 .

[0052] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A shell and tube heat exchanger tube with a guide spiral, characterized in that: include: A tube array (1), wherein a flow guide component (2) for improving heat exchange efficiency is provided in the tube array (1); The flow guide assembly (2) comprises: a spiral blade (21), wherein the spiral blade (21) is fixed in the tube array (1); The pitch of the spiral blade (21) decreases from one end of the tube array (1) to the other end and then increases; The spiral leaf (21) is provided with a plurality of grooves (211), and the spiral leaf (21) is provided with a plurality of protrusions (212); The flow guide assembly (2) comprises: a plurality of flow guide parts (3), wherein the flow guide parts (3) are composed of a first flow guide plate (31) and a second flow guide plate (32), and the first flow guide plate (31) and the second flow guide plate (32) are both fixed in the tube array (1); The guide assembly (2) further comprises: a connecting piece (33), the connecting piece (33) being fixed between each group of the first guide plates (31) and the second guide plates (32), the connecting piece (33) being provided with a connecting hole (331) extending through the connecting piece (33), and the inner diameter of the connecting hole (331) being gradually reduced.

2. The shell and tube heat exchanger with flow-guiding spirals according to claim 1, characterized in that: A mounting assembly (4) is provided between the first guide plate (31) and the second guide plate (32) and the tube array (1). The mounting assembly (4) comprises: a mounting plate (41), a first magnetic block (42) and a second magnetic block (43). A mounting groove (11) is provided on the tube array (1). The first magnetic block (42) is fixed in the mounting groove (11). The mounting plate (41) is arranged in the mounting groove (11). The first guide plate (31) and the second guide plate (32) are both fixed on the corresponding mounting plate (41). The second magnetic block (43) is fixed on the mounting plate (41). The first magnetic block (42) and the second magnetic block (43) are magnetically attracted to each other.

3. The shell and tube heat exchanger with flow-guiding spirals according to claim 2, characterized in that: The mounting assembly (4) further comprises: a locking rod (44) and a locking spring (45); a receiving hole (411) is provided on the mounting plate (41); a locking hole (12) is provided through the tube array (1); one end of the locking rod (44) is arranged in the locking hole (12) and the other end is arranged in the receiving hole (411); and the locking spring (45) is fixed between the locking rod (44) and the bottom of the receiving hole (411).

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