High-corrosion-resistance heat exchanger flow collecting aluminum pipe welding seam structure
By designing a highly corrosion-resistant weld structure for the heat exchanger manifold aluminum tubes, the appearance and mechanical performance problems caused by traditional manifold aluminum tube joints were solved, achieving high strength and corrosion resistance of the weld and extending its service life.
Patent Information
- Application Number
- CN202423130661.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-18
AI Technical Summary
The joint structure resulting from the traditional aluminum manifold manufacturing process affects the appearance quality and mechanical properties, reduces corrosion resistance, and may pose a threat to the performance and safety of the heat exchanger.
A highly corrosion-resistant heat exchanger manifold aluminum tube weld structure is designed, which adopts a non-linear first and second rolled edge overlap to form a limiting structure and an opening structure, including a beveled section, a rounded corner section, and a vertical section, to ensure sufficient storage and flow of welding fluid and reduce welding defects.
It significantly improves the overall strength and corrosion resistance of the weld, extends the service life of the manifold, increases the welding success rate and product reliability, and reduces the risk of corrosion.
Smart Images
Figure CN223596648U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to aluminium pipe production technical field, concretely relates to a high corrosion -resistant heat exchanger collecting heat aluminium pipe weld structure. BACKGROUND
[0002] As indispensable general equipment in chemical industry, petroleum, food and other numerous industrial fields, heat exchanger occupies the pivotal position in the production process. Its core function lies in realizing the heat transfer between fluids, ensuring that the fluid temperature can accurately reach the heat index required by the process flow, thereby meeting various production needs. In actual industrial application, heat exchanger can flexibly play the roles of condenser, evaporator and other multiple roles, and its wide application range and diversified types fully demonstrate its importance and practicality in the industrial field.
[0003] As a crucial component in heat exchanger, the collecting heat aluminium pipe works cooperatively with other parts to build a complete heat exchanger structure. It undertakes the key task of distributing or collecting heat exchange medium in the heat exchange process, and plays an irreplaceable role in ensuring the normal operation and high efficiency of heat exchanger.
[0004] However, as for the current traditional collecting heat aluminium pipe production process, the method of winding the aluminium strip into a pipe through a pipe winding machine is generally adopted. This production method meets the production needs to a certain extent, but the pipe wall of the collecting heat pipe inevitably leaves a joint. The existence of these joint structures not only affects the appearance quality of the collecting heat pipe, but more importantly, it will cause a series of problems such as the decline of mechanical properties and the weakening of corrosion resistance of the collecting heat pipe. These problems not only reduce the overall performance of the heat exchanger, but also may pose a potential threat to production safety. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a high corrosion -resistant heat exchanger collecting heat aluminium pipe weld structure, which enables the collecting heat aluminium pipe to maintain excellent corrosion resistance in various harsh environments, prolongs the service life and reduces the maintenance cost caused by corrosion.
[0006] To achieve the above-mentioned purpose, the application provides a high corrosion -resistant heat exchanger collecting heat aluminium pipe weld structure, which comprises a strip, the strip has a first crimping edge of non-linear form and a second crimping edge of non-linear form, the first crimping edge and the second crimping edge form a butt joint gap after lapping, and the butt joint gap has a limiting structure and an opening structure connected in communication.
[0007] In one embodiment, the limiting structure comprises a gap bevel segment, a gap fillet segment and a gap vertical segment connected in sequence.
[0008] In one of the embodiments, the first and second edges of the slanting corner section, the rounded corner section and the vertical section are symmetrically arranged.
[0009] In one of the embodiments, the opening structure comprises a first end and a second end, which form a triangular structure with an opening for storing the welding liquid.
[0010] In one of the embodiments, the first end has a first inclined edge or a straight edge, and the second end has a second inclined edge.
[0011] In one of the embodiments, the high end of the slanting corner section is connected to the opening structure, and the low end of the slanting corner section is connected to the rounded corner section.
[0012] In one of the embodiments, the maximum distance between the first and second edges of the slanting corner section, the rounded corner section and the vertical section is 0.1 mm.
[0013] In one of the embodiments, the slanting angle of the slanting corner section is 26±2 degrees.
[0014] In one of the embodiments, the total length of the slanting corner section, the rounded corner section and the vertical section is 1.5±0.2 mm, and the length of the vertical section is less than or equal to 0.5 mm.
[0015] In one of the embodiments, the total length of the limiting structure and the opening structure is 2.1±0.2 mm.
[0016] Compared with the prior art, the above technical scheme has the advantages that: the limiting structure can effectively prevent the generation of butt joint difference, thereby ensuring the perfect and clean appearance of the product. The opening structure design not only provides sufficient space for the storage of the welding liquid, but also significantly improves the one-time welding success rate of the product, greatly enhances the overall structural strength, and thus improves the durability and reliability of the product.
[0017] Due to the improvement of the above structure, the possibility of internal corrosion of the corrosion liquid through the weld is significantly reduced, the corrosion resistance of the product is effectively ensured, and the product can resist various harsh environments. Therefore, the service life of the manifold is significantly prolonged, thereby effectively achieving the purpose of prolonging the overall service life of the condenser. BRIEF DESCRIPTION OF DRAWINGS
[0018] Fig. 1 High-corrosion-resistant heat exchanger manifold aluminum pipe weld structure schematic view;
[0019] Fig. 2 High-corrosion-resistant heat exchanger manifold aluminum pipe weld structure end view;
[0020] Wherein: 1, gap bevel section, 2, gap fillet section, 3, gap vertical section, 4, first end, 5, second end, 11, first hem, 21, second hem. DETAILED DESCRIPTION
[0021] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, and not intended to limit the present application.
[0022] It should be noted that when an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0023] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited. The meaning of "several" is one or more, unless otherwise explicitly specified and limited.
[0024] In the description of the present application, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0025] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0026] Please refer to Figs. 1-2The embodiment provides a high-corrosion-resistance welding seam structure of a heat exchanger collecting aluminum pipe, which comprises a strip, the strip having a first non-linear edge and a second non-linear edge, the first non-linear edge and the second non-linear edge being overlapped to form a butt joint gap, the butt joint gap having a limiting structure and an opening structure connected in series, and the cooperation of the two greatly enhances the overall stability and corrosion resistance of the welding seam.
[0027] In the embodiment, the limiting structure comprises a gap bevel segment, a gap round corner segment and a gap vertical segment connected in series, and the first edge and the second edge of the three segments are symmetrically arranged. The limiting structure can effectively prevent the generation of a butt joint gap, and avoid appearance defects caused by the gap.
[0028] In the embodiment, the opening structure comprises a first end and a second end, the first end and the second end form a triangular structure with an opening, the first end has a first inclined edge or a straight edge, and the second end has a second inclined edge; the triangular structure can effectively guide and store the welding liquid during the welding process, thereby ensuring sufficient filling and high-quality completion of the welding seam.
[0029] In the embodiment, the high end of the gap bevel segment is connected with the opening structure, the low end of the gap bevel segment is connected with the gap round corner segment, and the design of the gap bevel segment can gradually slow down the speed of the welding liquid during the flow process, thereby avoiding the direct impact of the welding liquid on the welding seam area, and reducing the generation of welding defects. The design of the gap round corner segment helps to disperse stress when the welding seam is stressed, thereby avoiding the risk of cracking of the welding seam due to stress concentration.
[0030] In the embodiment, the maximum distance between the first edge and the second edge of the gap bevel segment, the gap round corner segment and the gap vertical segment is 0.1 mm. The close butt joint helps to reduce possible defects in the welding process, such as pores, slag inclusion and the like, and also reduces the risk of cracks caused by welding stress, thereby improving the reliability of the welding seam.
[0031] For the collecting pipe, the following welding seam structure parameters are optimal: the total length of the limiting structure and the opening structure is 2.1±0.2 mm; the total length of the gap bevel segment, the gap round corner segment and the gap vertical segment is 1.5±0.2 mm, which ensures the strength and makes the welding process more smooth, thereby reducing the welding time. The length of the gap vertical segment is less than or equal to 0.5 mm, which makes the welding seam more compact in the vertical direction and reduces the stress concentration in the welding seam area. The inclination angle of the gap bevel segment is 26±2 degrees, which helps the welding liquid to flow more smoothly during the welding process, thereby avoiding the accumulation or vortex of the welding liquid in the welding seam area.
[0032] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the same; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A high corrosion resistant heat exchanger header aluminum tube weld structure comprising a strip, characterized by, The strip has a first edge curl in a non-linear shape and a second edge curl in a non-linear shape, the first edge curl and the second edge curl are overlapped to form a butt joint gap, the butt joint gap has a limiting structure and an opening structure connected in sequence.
2. The high corrosion resistant welded joint structure of the heat exchanger manifold aluminum pipe according to claim 1, characterized in that, The limiting structure comprises a gap bevel segment, a gap round corner segment and a gap vertical segment connected in sequence.
3. The high corrosion resistant welded joint structure of the heat exchanger manifold aluminum pipe according to claim 2, characterized in that, The first edge curl and the second edge curl of the gap bevel segment, the gap round corner segment and the gap vertical segment are symmetrically arranged.
4. The high corrosion resistant welded joint structure of the heat exchanger manifold aluminum pipe according to claim 1, characterized in that, The opening structure comprises a first end and a second end, the first end and the second end form a triangular structure with an opening for storing welding liquid.
5. The high corrosion resistant welded joint structure of the heat exchanger manifold aluminum pipe according to claim 4, characterized in that, The first end has a first inclined edge or a straight edge, and the second end has a second inclined edge.
6. The high corrosion resistant welded joint structure of the heat exchanger manifold aluminum pipe according to claim 2, characterized in that, The high end of the gap bevel segment is connected to the opening structure, and the low end of the gap bevel segment is connected to the gap round corner segment.
7. The high corrosion resistant welded joint structure of the heat exchanger manifold aluminum pipe according to claim 2, characterized in that, The maximum distance between the first edge curl and the second edge curl of the gap bevel segment, the gap round corner segment and the gap vertical segment is 0.1 mm.
8. The high corrosion resistant welded joint structure of the heat exchanger manifold aluminum pipe according to claim 2, characterized in that, The inclination angle of the gap bevel segment is 26±2 degrees.
9. The high corrosion resistant welded joint structure of the heat exchanger manifold aluminum pipe according to claim 2, characterized in that, The total length of the gap bevel segment, the gap round corner segment and the gap vertical segment is 1.5±0.2 mm, wherein the length of the gap vertical segment is less than or equal to 0.5 mm.
10. The high corrosion resistant welded joint structure of the heat exchanger manifold aluminum pipe according to claim 1, characterized in that, The total length of the limiting structure and the opening structure is 2.1±0.2 mm.