Tube bundle supporting structure of shell-and-tube heat exchanger
By welding vortex guide plates and conical protrusions onto the bow-shaped baffle plate, the problem of dead flow angles in shell-and-tube heat exchangers is solved, achieving effective fluid mixing and improved heat transfer efficiency.
Patent Information
- Application Number
- CN202520359024.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-04
AI Technical Summary
In existing shell-and-tube heat exchangers, fluid flow is prone to dead zones, the heat transfer area cannot be fully utilized, and the heat transfer efficiency is low.
A vortex guide plate and a conical protrusion are welded onto the bow-shaped baffle plate. The vortex guide plate guides the fluid to the outside of the bow-shaped baffle plate, and the conical protrusion is used for flow diversion and diffusion to avoid dead flow angles and achieve mixing and heat exchange between the fluid in the middle and the fluid on the outside.
It effectively avoids dead zones in the flow, improves the mixing and heat exchange of fluids, and enhances heat transfer efficiency.
Smart Images
Figure CN223954712U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of shell and tube heat exchanger, specifically a kind of tube bundle support structure of shell and tube heat exchanger. BACKGROUND
[0002] Shell and tube heat exchanger is also called tube heat exchanger, it is wall surface of tube bundle enclosed in shell as heat transfer surface, shell and tube heat exchanger is composed of shell, heat transfer tube bundle, tube sheet, baffle (baffle) and pipe box and other components, shell is mostly cylindrical, internally equipped with tube bundle, tube bundle is fixed on tube sheet at both ends, baffle is plate for changing the direction of fluid, flow plate is arranged in shell, it can improve heat transfer effect, and also play the role of supporting tube bundle.
[0003] The arch baffle in the prior art is usually made of steel plate, which is used as a component for supporting the heat exchange tube, and is in the shape of an arch. The arch is formed by cutting 1 / 4 to 1 / 3 of a circle. Fluid passes through the gap. A tube hole is provided on the arch baffle for the heat exchange tube to pass through, thereby supporting the heat exchange tube. A plurality of baffles are arranged at equal intervals along the axial direction. The gap directions of adjacent two baffles are opposite. The fluid in the shell flows alternately through the upper and lower gaps or the left and right gaps, forming an "S" shape. However, such a flow pattern is prone to flow dead angles, and the heat transfer area cannot be fully utilized. Therefore, a tube bundle support structure for a shell and tube heat exchanger is provided. SUMMARY
[0004] The utility model aims at: in order to solve the problem in the above background, provide a kind of tube bundle support structure of shell and tube heat exchanger.
[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of tube bundle support structure of shell and tube heat exchanger, including the arch baffle for providing support to heat transfer tube bundle, the surface welding of vortex guide vane is carried out to one end of the arch baffle close to fluid coming direction, the vortex guide vane is provided with multiple, multiple vortex guide vanes are evenly distributed in ring with the center of the arch baffle as center;
[0006] When fluid flow impacts on the end surface of the arch baffle, the vortex guide vanes are used to guide the fluid close to the center of the arch baffle to the outer side of the arch baffle, to realize flow disturbance at the welding position of the arch baffle and the heat exchanger shell, and to avoid flow dead angles.
[0007] As a further scheme of the utility model: the center position of one end of the arch baffle close to fluid coming direction is welded and fixed with conical lug, multiple vortex guide vanes are intersected and fixed with conical lug, and the conical lug is used to distribute and diffuse the fluid impacting the center of the arch baffle.
[0008] As a further scheme of the utility model: the end face of the vortex guide plate and the segmental baffle is inclined distribution, the track of the end of the vortex guide plate far from the segmental baffle is greater than the track of the end of the vortex guide plate close to the segmental baffle.
[0009] As a further scheme of the utility model: the segmental baffle is provided with a plurality of mounting holes of matrix uniform distribution at one end, the mounting hole completely penetrates the other end of the segmental baffle and the vortex guide plate, the conical boss;
[0010] The mounting hole is used for providing mounting hole position for the heat transfer tube bundle.
[0011] As a further scheme of the utility model: the vortex guide plate is synchronously cut at the cutting position of the segmental baffle, the conical boss is hollow structure, and the mounting hole on the segmental baffle, the vortex guide plate and the conical boss is formed by laser cutting process.
[0012] Compared with the prior art, the utility model has the beneficial effects that:
[0013] By setting the vortex guide plate and the conical boss, the fluid impacting the middle part of the segmental baffle can be guided to the outside direction of the segmental baffle, thereby forming the flow disturbance effect on the fluid at the welding position of the segmental baffle and the heat exchanger shell, not only can avoid the flow dead angle situation, at the same time, by guiding the flow in the middle part to the outside, the mutual mixing and heat exchange of the middle fluid and the outside fluid can be realized, and the heat exchange efficiency can be further improved. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 It is the structural schematic diagram of the utility model;
[0015] Fig. 2 It is the structural distribution diagram of multiple segmental baffles of the utility model;
[0016] Fig. 3 It is the structural schematic diagram of a single segmental baffle of the utility model;
[0017] Fig. 4 It is another perspective view of the segmental baffle of the utility model.
[0018] In the drawing: 1, segmental baffle;2, vortex guide plate;3, conical boss;4, mounting hole;5, heat transfer tube bundle. DETAILED DESCRIPTION
[0019] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.
[0020] Please refer to Figs. 1-4 In the embodiments of the present application, a tube bundle support structure of a shell-and-tube heat exchanger comprises arc baffle plates 1 for providing support to heat transfer tube bundles 5, and vortex flow guides 2 are welded to the surface of one end of the arc baffle plates 1 close to the fluid direction, and the vortex flow guides 2 are arranged in multiple and are evenly distributed in a ring shape with the center of the arc baffle plate 1 as the center.
[0021] When the fluid flow impacts on the end surface of the arc baffle plate 1, the multiple vortex flow guides 2 are used to guide the fluid close to the center of the arc baffle plate 1 to the outer side of the arc baffle plate 1, so as to realize flow disturbance at the welding position of the arc baffle plate 1 and the heat exchanger shell, and avoid the occurrence of flow dead angle.
[0022] The conical protrusions 3 are welded and fixed at the center position of one end of the arc baffle plate 1 close to the fluid direction, the multiple vortex flow guides 2 are fixed with the conical protrusions 3, and the conical protrusions 3 are used to split and diffuse the fluid impacting the center of the arc baffle plate 1.
[0023] In the present embodiment: when the arc baffle plate 1 is used, the directions of the notches of the multiple arc baffle plates 1 are opposite, the fluid in the heat exchanger shell flows through the upper and lower notches or the left and right notches alternately, and the fluid flows in an "S" shape;
[0024] In this process, when the fluid flow is close to the arc baffle plate 1, the fluid will form an impact with the end surface of the arc baffle plate 1, at this time, the flow impacting the vortex flow guide 2 will flow along the track of the vortex flow guide 2 to the outside of the arc baffle plate 1, in this way, the fluid at the welding position of the arc baffle plate 1 and the heat exchanger shell will form a flow disturbance effect, which can not only avoid the occurrence of flow dead angle, but also guide the flow in the middle part to the outside, so as to realize the mutual mixing and heat exchange of the fluid in the middle part and the fluid outside, and further improve the heat exchange efficiency;
[0025] At the same time, the fluid impacting the conical protrusion 3 will flow along the conical surface of the conical protrusion 3 to diffuse outward, so as to better contact the vortex flow guide 2 and increase the mixing effect.
[0026] Please refer to Figs. 2-4, the vortex guide plate 2 is inclined to the end surface of the arc baffle 1, and the track of the end of the vortex guide plate 2 away from the arc baffle 1 is greater than the track of the end of the vortex guide plate 2 close to the arc baffle 1.
[0027] In the embodiment: the vortex guide plate 2 is inclined, so that the vortex guide plate 2 is similar to a horn structure towards the fluid direction, can better accept the impact of the fluid, and guide the flow to change direction, to achieve good flow diffusion effect.
[0028] Please refer to Figs. 1-4 , the arc baffle 1 has a plurality of mounting holes 4 which are evenly distributed in a matrix and are completely penetrated through the other end of the arc baffle 1 and the vortex guide plate 2 and the conical protrusion 3;
[0029] The mounting hole 4 is used for providing a mounting hole for the heat pipe bundle 5;
[0030] The vortex guide plate 2 is synchronously cut at the cutting position of the arc baffle 1, the conical protrusion 3 is a hollow structure, and the mounting hole 4 on the arc baffle 1, the vortex guide plate 2 and the conical protrusion 3 is formed by a laser cutting process.
[0031] In the embodiment: the corresponding mounting hole 4 is provided on the vortex guide plate 2 and the conical protrusion 3, so that the heat pipe bundle 5 is smoothly installed, and the vortex guide plate 2, the conical protrusion 3 and the heat pipe bundle 5 are attached, so that the support stress surface of the heat pipe bundle 5 is larger, and the support stability of the heat pipe bundle 5 is further improved.
[0032] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.
Claims
1. A tube bundle support structure for a shell-and-tube heat exchanger, comprising an arcuate baffle (1) for providing support for the heat transfer tube bundle (5), characterized in that, The bow-shaped baffle (1) has a vortex guide plate (2) welded to the surface of one end near the direction of fluid flow. Multiple vortex guide plates (2) are provided, and the multiple vortex guide plates (2) are evenly distributed in a ring with the center of the bow-shaped baffle (1) as the center. When the fluid flow impacts the end face of the bow-shaped baffle (1), multiple vortex guide plates (2) are used to guide the fluid near the center of the bow-shaped baffle (1) to the outer part of the bow-shaped baffle (1), so as to achieve flow disturbance at the welding position between the bow-shaped baffle (1) and the heat exchanger shell and avoid the occurrence of flow dead angle.
2. The tube bundle support structure for a shell-and-tube heat exchanger according to claim 1, characterized in that, A conical protrusion (3) is welded and fixed at the center of one end of the bow-shaped baffle (1) near the direction of fluid flow. Multiple vortex guide plates (2) are intersected and fixed with the conical protrusion (3). The conical protrusion (3) is used to divert and diffuse the fluid impacting the center of the bow-shaped baffle (1).
3. The tube bundle support structure for a shell-and-tube heat exchanger according to claim 1, characterized in that, The end faces of the vortex guide plate (2) and the bow-shaped deflector plate (1) are inclined, and the trajectory of the end of the vortex guide plate (2) away from the bow-shaped deflector plate (1) is greater than the trajectory of the end of the vortex guide plate (2) close to the bow-shaped deflector plate (1).
4. The tube bundle support structure for a shell-and-tube heat exchanger according to claim 1, characterized in that, One end of the bow-shaped baffle (1) is provided with a number of evenly distributed mounting holes (4), and the mounting holes (4) completely penetrate the other end of the bow-shaped baffle (1), the vortex guide plate (2), and the conical protrusion (3); The mounting hole (4) is used to provide mounting positions for the heat transfer tube bundle (5).
5. The tube bundle support structure for a shell-and-tube heat exchanger according to claim 4, characterized in that, The vortex guide plate (2) is cut synchronously at the cutting position of the bow-shaped baffle plate (1), the conical protrusion (3) has a hollow structure, and the mounting holes (4) on the bow-shaped baffle plate (1), the vortex guide plate (2), and the conical protrusion (3) are formed by laser cutting process.