A heat exchanger anti-impact structure
Through the structural design of brackets, support rods, and guide plates, the impact force of the fluid is dispersed, which solves the problems of deformation and uneven flow of the heat transfer tubes under high-velocity fluid, and achieves safety protection and efficient heat transfer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG DAQO NEW ENERGY CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-30
AI Technical Summary
When fluid enters at high flow rates, existing heat exchangers are prone to heat transfer tube deformation, increased vibration, tube wall fatigue damage, and uneven flow, resulting in reduced heat transfer efficiency and liquid stagnation due to insufficient heat exchange.
The structure employs a bracket, support rod, first guide plate, and second guide plate. Through the design of guide cones and guide holes, the fluid impact force is gradually dispersed to ensure uniform fluid distribution and good flow characteristics.
It effectively protects the heat exchanger tube bundle, improves heat transfer efficiency, avoids eddies and dead zones, and ensures uniform fluid distribution and good flow.
Smart Images
Figure CN224435163U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat exchange equipment technology, and in particular to a heat exchanger anti-impact structure. Background Technology
[0002] In industrial and civilian applications, heat exchangers are widely used for heat transfer, fluid cooling, and heating. Their core components typically include the shell, tube bundle (heat transfer tubes), and end caps. When liquid containing impurities enters the heat exchanger at a high flow rate, especially near the inlet, there is a risk of direct impact on the tube bundle. This impact can cause deformation, increased vibration, or even breakage of the heat transfer tubes. Simultaneously, the impact can accelerate fatigue damage at the connection between the tube wall and the shell; furthermore, direct impact can disrupt normal laminar or turbulent flow, leading to uneven flow, eddies, and dead zones. This not only reduces heat transfer efficiency but can also cause insufficiently transferred liquid to stagnate, affecting overall performance.
[0003] To address the aforementioned problems, various anti-fluid flow structures have been proposed in existing technologies. One common approach is to install a baffle perpendicular to the main flow direction inside the heat exchanger shell near the inlet. While this structure can provide some dispersion, its effect is limited and singular; a single baffle often only guides the fluid to change direction within a specific plane, making it prone to adhering to the walls or forming large backflow areas. Furthermore, vortices easily form behind the baffle, and flow around the baffle edge tends to occur, leading to reduced heat exchange efficiency. Another method is to install an anti-fluid flow plate with multiple small holes at the inlet; although this provides some obstruction to the fluid, its effect on fluid diffusion is poor. Utility Model Content
[0004] In view of this, the present invention provides a heat exchanger anti-impact structure, the main purpose of which is to disperse the impact force of the fluid and protect the safety of the heat exchanger tube bundle; at the same time, it ensures uniform fluid distribution and good flow characteristics.
[0005] To achieve the above objectives, this utility model mainly provides the following technical solutions:
[0006] An embodiment of this utility model provides a heat exchanger anti-impact structure, including: a bracket, a support rod, a first guide plate, and a second guide plate;
[0007] The bracket includes: a support sleeve and a support plate;
[0008] The support sleeve is a circular tubular structure; the support sleeve is coaxially distributed with the liquid inlet of the heat exchanger;
[0009] One end of the support plate is fixedly mounted on the support sleeve, and the other end is fixedly mounted on the inner wall of the heat exchanger; the support plate extends radially along the support sleeve.
[0010] The support rod is cylindrical; one end of the support rod is provided with a guide cone; the diameter of the bottom of the guide cone is larger than the outer diameter of the support sleeve; the support rod is inserted into the support sleeve; the guide cone is located on one side of the support sleeve; the bottom of the guide cone is restricted by one end of the support sleeve.
[0011] The first guide plate has a disc-shaped structure; the top of the first guide plate is a guide surface one; the guide surface one gradually slopes from the middle to the edge towards the bottom of the first guide plate;
[0012] The first guide plate is provided with a guide hole; the extension direction of the guide hole is parallel to the axis of the first guide plate; there are multiple guide holes; the multiple guide holes are arranged in an array with the axis of the first guide plate as the center.
[0013] The first guide plate is provided with a second guide hole; the second guide hole is inclined outward from the top to the bottom of the first guide plate; there are multiple second guide holes; the multiple second guide holes are arranged in an array with the axis of the first guide plate as the center; the second guide hole is located outside the first guide hole.
[0014] The first guide plate is fitted onto the support rod and is coaxially distributed with the support rod; the first guide plate is located on the other side of the support sleeve.
[0015] The second guide plate has a disc-shaped structure; the top of the second guide plate is the second guide surface; the second guide surface gradually slopes from the middle to the edge towards the bottom of the second guide plate;
[0016] The second guide plate is mounted on the support rod and is coaxially distributed with the support rod; the second guide plate is spaced at a predetermined distance from the first guide plate;
[0017] The second guide plate is provided with three guide holes; the three guide holes are inclined inward from the top to the bottom of the second guide plate; there are multiple three guide holes; the multiple three guide holes are arranged in an array with the axis of the second guide plate as the center;
[0018] The distance between the inlet end of the third guide hole and the support rod is greater than the distance between the first guide hole and the support rod;
[0019] The second guide plate is provided with a fourth guide hole; the extension direction of the fourth guide hole is parallel to the axis of the second guide plate; there are multiple fourth guide holes; the multiple fourth guide holes are arranged in an array with the axis of the second guide plate as the center; the fourth guide hole is located outside the third guide hole.
[0020] The distance between the fourth guide hole and the support rod is greater than the distance between the outlet end of the second guide hole and the support rod.
[0021] Furthermore, the fourth guide hole and the second guide hole are staggered in the circumferential direction.
[0022] Furthermore, the axial projection of the inlet end of the third guide hole partially overlaps with the axial projection of the first guide hole.
[0023] Furthermore, the flow guide hole is a circular hole or a slot;
[0024] The second guide hole is a round hole or a slotted hole;
[0025] The guide hole three is a round hole or a slotted hole;
[0026] The four guide holes are either round holes or slots.
[0027] Furthermore, the extension direction of the second guide hole forms an angle of 30° to 70° with the axis of the first guide plate;
[0028] The extension direction of the third guide hole forms an angle of 30° to 70° with the axis of the second guide disk.
[0029] Furthermore, the other end of the support rod is a frustum structure.
[0030] Furthermore, there are three support plates; the three support plates are arranged in an array with the axis of the support sleeve as the center.
[0031] By employing the above technical solution, the anti-impact structure of the heat exchanger of this utility model has at least the following advantages:
[0032] It can disperse the impact force of the fluid and protect the heat exchanger tube bundle; at the same time, it ensures uniform fluid distribution and good flow characteristics.
[0033] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0034] Figure 1 This is a schematic diagram of a heat exchanger anti-impact structure provided for an embodiment of the present utility model.
[0035] As shown in the figure:
[0036] 1 is the bracket, 1-1 is the support plate, 1-2 is the support sleeve, 2 is the guide cone, 3 is the first guide plate, 3-1 is the first guide hole, 3-2 is the second guide hole, 4 is the second guide plate, 4-1 is the third guide hole, 4-2 is the fourth guide hole, 5 is the support rod, and 6 is the liquid inlet. Detailed Implementation
[0037] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods, structures, features, and effects according to this utility model application are described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.
[0038] like Figure 1 As shown, an embodiment of this utility model proposes a heat exchanger anti-impact structure, including: a bracket 1, a support rod 5, a first guide plate 3, and a second guide plate 4; the bracket 1 includes: a support sleeve 1-2 and a support plate 1-1; the support sleeve 1-2 is a circular tubular structure; the support sleeve 1-2 is coaxially distributed with the liquid inlet 6 of the heat exchanger; one end of the support plate 1-1 is fixedly mounted on the support sleeve 1-2, preferably by welding. The other end of the support plate 1-1 is fixedly mounted on the inner wall of the heat exchanger, preferably by welding; the support plate 1-1 extends radially along the support sleeve 1-2; in this embodiment, preferably, there are three support plates 1-1; the three support plates 1-1 are arranged in an array around the axis of the support sleeve 1-2 to form a stable support for the support sleeve 1-2.
[0039] The support rod 5 is cylindrical; one end of the support rod 5 is equipped with a guide cone 2 to divert the fluid entering the heat exchanger; the diameter of the bottom of the guide cone 2 is larger than the outer diameter of the support sleeve 1-2; the support rod 5 is inserted into the support sleeve 1-2; the support rod 5 and the support sleeve 1-2 can be fixed by welding, which is a reliable structure; it can also be fixed by setting a spacer or gasket between the support sleeve 1-2 and the guide cone 2; it can also be fixed by setting a spacer or gasket between the support sleeve 1-2 and the first guide plate 3; it can also be set in both positions simultaneously; the position of the guide cone 2 can be set according to the required location. The guide cone 2 is located on one side of the support sleeve 1-2; the bottom of the guide cone 2 is restricted by one end of the support sleeve 1-2, forming a stable support for the support rod 5.
[0040] The first guide plate 3 has a disc-shaped structure; the top of the first guide plate 3 is a guide surface; the guide surface gradually slopes from the center to the edge towards the bottom of the first guide plate 3 to block and divert the fluid impacting the guide surface; the guide surface is preferably spherical, which can better disperse the fluid impacting the guide surface. The first guide plate 3 is provided with a guide hole 3-1; the extension direction of the guide hole 3-1 is parallel to the axis of the first guide plate 3; there are multiple guide holes 3-1; the multiple guide holes 3-1 are arrayed with the axis of the first guide plate 3 as the center; the guide holes 3-1 guide the fluid to the second guide plate 4.
[0041] The first guide plate 3 is provided with a second guide hole 3-2; the second guide hole 3-2 is inclined outward from the top to the bottom of the first guide plate 3; there are multiple second guide holes 3-2; the multiple second guide holes 3-2 are arranged in an array with the axis of the first guide plate 3 as the center; the second guide hole 3-2 is located outside the first guide hole 3-1. In this embodiment, preferably, the extension direction of the second guide hole 3-2 makes an angle of 30° to 70° with the axis of the first guide plate 3, and a suitable angle can be selected as needed. The larger the angle, the greater the angle of fluid dispersion. The first guide plate 3 is fitted on the support rod 5 and is coaxially distributed with the support rod 5; the first guide plate 3 is located on the other side of the support sleeve 1-2; the first guide plate 3 is welded and fixed to the support rod 5.
[0042] The second guide plate 4 has a disc-shaped structure; the top of the second guide plate 4 is a guide surface two; the guide surface two gradually slopes from the middle to the edge towards the bottom of the second guide plate 4 to block and divert the fluid impacting the guide surface two. The guide surface two is preferably a conical surface to disperse the fluid impacting the guide surface two to the surrounding area. The second guide plate 4 is mounted on the support rod 5 and is coaxially distributed with the support rod 5; the second guide plate 4 is spaced at a predetermined distance from the first guide plate 3 to block and divert some of the fluid passing through the first guide plate 3 again.
[0043] The second guide plate 4 is provided with guide holes 3-1; the guide holes 3-1 are inclined inward from the top to the bottom of the second guide plate 4; there are multiple guide holes 3-1; the multiple guide holes 3-1 are arranged in an array around the axis of the second guide plate 4; in this embodiment, preferably, the angle between the extension direction of the guide holes 3-1 and the axis of the second guide plate 4 is 30° to 70°, and a suitable angle can be selected as needed. The guide holes 3-1 can prevent vortices from appearing at the bottom of the second guide plate 4. The distance between the inlet end of guide hole 3-1 and the support rod 5 is greater than the distance between guide hole 1-3-1 and the support rod 5; this allows the second guide plate 4 to block the fluid flowing out of guide hole 1-3-1. Preferably, in this embodiment, the axial projection of the inlet end of guide hole 3-1 partially overlaps with the axial projection of guide hole 1-3-1, guiding a portion of the fluid output from guide hole 1-3-1 through guide hole 3-1 to the bottom of the second guide plate 4. The overlapping area does not exceed half the area of guide hole 3-1 to reduce fluid flow and minimize impact.
[0044] The second guide plate 4 is provided with guide holes 4-2; the extension direction of guide holes 4-2 is parallel to the axis of the second guide plate 4; there are multiple guide holes 4-2; the multiple guide holes 4-2 are arranged in an array with the axis of the second guide plate 4 as the center; the guide holes 4-2 are located outside of guide holes 4-1; the distance between guide holes 4-2 and support rod 5 is greater than the distance between the outlet end of guide hole 3-2 and support rod 5. In this embodiment, preferably, guide holes 4-2 and guide holes 3-2 are staggered in the circumferential direction so that the second guide plate 4 can partially block the fluid passing through guide holes 3-2 and guide it through guide holes 4-2. The diameter of the second guide plate 4 is larger than the diameter of the first guide plate 3 and not smaller than the inner diameter of the heat exchanger inlet 6, so as to gradually divert the fluid.
[0045] An embodiment of this utility model proposes a heat exchanger anti-impact structure that gradually disperses and guides the fluid through multiple passes of the guide cone 2, the first guide plate 3, and the second guide plate 4. This disperses the impact force of the fluid and protects the heat exchanger tube bundle, while ensuring uniform fluid distribution and good flow characteristics.
[0046] As a preferred embodiment of the above, the first guide hole 3-1 is a round hole or a slot; the second guide hole 3-2 is a round hole or a slot; the third guide hole 4-1 is a round hole or a slot; and the fourth guide hole 4-2 is a round hole or a slot, which can be selected for use.
[0047] As a preferred embodiment of the above, the other end of the support rod 5 is a frustum structure to avoid affecting the fluid guided by the guide hole 3 4-1 and to avoid the formation of vortices at the bottom of the support rod 5.
[0048] To further clarify, while the terms "first," "second," etc., may be used herein to describe various elements, these terms should not limit the elements. These terms are used only to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element; these terms are used only to distinguish one element from another. This does not depart from the scope of the exemplary embodiments. Similarly, "element one," "element two," and so on do not represent the order of elements; these terms are used only to distinguish one element from another. As used herein, the term "and / or" includes any and all combinations of one or more associated listed items.
[0049] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0050] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0051] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.
Claims
1. A heat exchanger anti-impingement structure, characterized by, Includes: bracket, support rod, first guide plate and second guide plate; The bracket includes: a support sleeve and a support plate; The support sleeve is a circular tubular structure; the support sleeve is coaxially distributed with the liquid inlet of the heat exchanger; One end of the support plate is fixedly mounted on the support sleeve, and the other end is fixedly mounted on the inner wall of the heat exchanger; the support plate extends radially along the support sleeve. The support rod is cylindrical; one end of the support rod is provided with a guide cone; the diameter of the bottom of the guide cone is larger than the outer diameter of the support sleeve; the support rod is inserted into the support sleeve; the guide cone is located on one side of the support sleeve; the bottom of the guide cone is restricted by one end of the support sleeve. The first guide plate has a disc-shaped structure; the top of the first guide plate is a guide surface one; the guide surface one gradually slopes from the middle to the edge towards the bottom of the first guide plate; The first guide plate is provided with a guide hole; the extension direction of the guide hole is parallel to the axis of the first guide plate; there are multiple guide holes; the multiple guide holes are arranged in an array with the axis of the first guide plate as the center. The first guide plate is provided with a second guide hole; the second guide hole is inclined outward from the top to the bottom of the first guide plate; there are multiple second guide holes; the multiple second guide holes are arranged in an array with the axis of the first guide plate as the center; the second guide hole is located outside the first guide hole. The first guide plate is fitted onto the support rod and is coaxially distributed with the support rod; the first guide plate is located on the other side of the support sleeve. The second guide plate has a disc-shaped structure; the top of the second guide plate is the second guide surface; the second guide surface gradually slopes from the middle to the edge towards the bottom of the second guide plate; The second guide plate is mounted on the support rod and is coaxially distributed with the support rod; the second guide plate is spaced at a predetermined distance from the first guide plate; The second guide plate is provided with three guide holes; the three guide holes are inclined inward from the top to the bottom of the second guide plate; there are multiple three guide holes; the multiple three guide holes are arranged in an array with the axis of the second guide plate as the center; The distance between the inlet end of the third guide hole and the support rod is greater than the distance between the first guide hole and the support rod; The second guide plate is provided with a fourth guide hole; the extension direction of the fourth guide hole is parallel to the axis of the second guide plate; there are multiple fourth guide holes; the multiple fourth guide holes are arranged in an array with the axis of the second guide plate as the center; the fourth guide hole is located outside the third guide hole. The distance between the fourth guide hole and the support rod is greater than the distance between the outlet end of the second guide hole and the support rod.
2. The heat exchanger anti-impact structure according to claim 1, characterized in that, The fourth guide hole and the second guide hole are staggered in the circumferential direction.
3. The heat exchanger anti-impact structure according to claim 1, characterized in that, The axial projection of the inlet end of the third guide hole partially overlaps with the axial projection of the first guide hole.
4. The heat exchanger anti-impact structure according to claim 1, characterized in that, The flow guide hole is either a round hole or a slotted hole; The second guide hole is a round hole or a slot; The guide hole three is a round hole or a slotted hole; The four guide holes are either round holes or slots.
5. The heat exchanger anti-impact structure according to claim 4, characterized in that, The extension direction of the second guide hole forms an angle of 30° to 70° with the axis of the first guide plate; The extension direction of the third guide hole forms an angle of 30° to 70° with the axis of the second guide disk.
6. The heat exchanger anti-impact structure according to claim 1, characterized in that, The other end of the support rod is a frustum structure.
7. The heat exchanger anti-impact structure according to claim 1, characterized in that, There are three support plates; the three support plates are arranged in an array with the axis of the support sleeve as the center.