High voltage flat aluminium cable accessory with reinforcing structure
By adding a reinforcing structure at the weld, the problem of insufficient welding strength in high-voltage flat aluminum cable accessories was solved, a stable connection at the weld was achieved, and the reliability and safety of the cable accessories were improved.
Patent Information
- Application Number
- CN202521485698.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-15
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-15
AI Technical Summary
Existing high-voltage flat aluminum cable accessories are prone to insufficient strength at the weld joints, leading to weld breakage, affecting sealing and electrical connection, causing a decrease in reliability, and may even cause power outages in high-voltage cable lines.
A reinforcing structure, including multiple reinforcing ribs, is added to the weld joint. By welding it to the flat aluminum sheath and transition piece, the weld strength is improved, forming a stable connection.
It enhances the strength of the weld joint, prevents weld fracture, improves the overall reliability of high-voltage flat aluminum cable accessories, ensures the stability of sealing and electrical connection, and reduces the risk of accidents.
Smart Images
Figure CN224683834U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of high-voltage cable accessories technology, and in particular to a high-voltage flat aluminum cable accessory with a reinforced structure. Background Technology
[0002] In China, corrugated aluminum-sheathed cross-linked polyethylene insulated cables frequently experience buffer layer erosion failures, posing a serious threat to line reliability and power grid safety. Smooth aluminum-sheathed cables, on the other hand, can effectively prevent discharge phenomena caused by poor contact in the internal buffer layer, avoiding the discharge erosion phenomena inside corrugated aluminum-sheathed high-voltage cables, and thus ensuring long-term operational safety. Currently, smooth aluminum-sheathed cables are being gradually promoted in China.
[0003] When manufacturing cable accessories such as terminals and joints for smooth aluminum sheathed cables, to prevent burns to the cable insulation shield and insulation body, an expansion process is often used to change the structure of the smooth aluminum sheath and the buffer layer that are in close contact. The expanded flat aluminum sheath is then lap-welded to the transition piece. The correct welding method for lap welding should be welding on both sides simultaneously. However, since the welding between the flat aluminum and the transition piece cannot meet this requirement, only the outer part can be welded, which often results in insufficient welding strength. In addition, due to the weight of the cable and cable accessories, in actual engineering, the weld joint between the transition piece and the expanded flat aluminum sheath in high-voltage flat aluminum cable accessories often breaks, which affects the sealing and electrical continuity of the high-voltage flat aluminum cable accessories themselves, leading to a decrease in the reliability of the flat aluminum cable accessories. In severe cases, it can cause power outages in high-voltage cable lines, resulting in serious social impact and economic losses. Utility Model Content
[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a high-voltage flat aluminum cable accessory with a reinforced structure, which can enhance overall reliability and avoid welding breakage.
[0005] The high-voltage flat aluminum cable accessory with a reinforced structure according to the first aspect of this application includes:
[0006] A flat aluminum sheath is fitted onto the tail of a high-voltage flat aluminum cable, and one end of the flat aluminum sheath is provided with an enlarged diameter section.
[0007] A transition piece, one end of which is provided with a connecting part, the connecting part being used to engage with the expanded diameter part;
[0008] The weld seam overlaps the flat aluminum sheath and the transition piece, and covers the gap between the enlarged diameter portion and the connecting portion;
[0009] The reinforcing structure is welded at one end to the flat aluminum sheath and at the other end to the transition piece, and is located above the weld.
[0010] According to some embodiments of this application, the reinforcing structure is arranged in close proximity to the flat aluminum sheath, the weld, and the transition piece.
[0011] According to some embodiments of this application, the reinforcing structure is arranged perpendicular to the weld.
[0012] According to some embodiments of this application, the reinforcing structure includes a plurality of reinforcing ribs.
[0013] According to some embodiments of this application, the reinforcing structure includes four reinforcing ribs.
[0014] According to some embodiments of this application, a plurality of the reinforcing ribs are equally spaced on the circumference of the weld.
[0015] According to some embodiments of this application, the reinforcing rib is a reinforcing aluminum sheet.
[0016] According to some embodiments of this application, the flat aluminum sheath includes:
[0017] First circular segment;
[0018] The expanded diameter section is a first conical ring structure, and the first circular ring segment is connected to the end of the first conical ring structure with the smallest inner diameter.
[0019] According to some embodiments of this application, the transition element includes:
[0020] Second circular segment;
[0021] The connecting part is a second conical ring structure, and the second ring segment is connected to the end with the largest inner diameter of the second conical ring structure.
[0022] According to some embodiments of this application, the transition member is an aluminum transition member.
[0023] In this embodiment, by adding a reinforcing structure above the weld that is simultaneously welded to the flat aluminum sheath and the transition piece, the structure at the weld is stabilized and strengthened. The strength of the welded connection between the flat aluminum sheath and the transition piece is improved, which can prevent weld breakage and enhance overall reliability. This ensures the sealing and electrical connection of the high-voltage flat aluminum cable accessories themselves, thereby improving the reliability of the flat aluminum cable accessories and avoiding the accident risks that may be caused by weld breakage.
[0024] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0025] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0026] Figure 1 This is a schematic diagram of the structure of a high-voltage flat aluminum cable accessory with a reinforced structure according to an embodiment of this application;
[0027] Figure 2 This is a structural schematic diagram of a standard high-voltage flat aluminum cable accessory;
[0028] Figure 3 This is a schematic diagram of another high-voltage flat aluminum cable accessory with a reinforced structure according to an embodiment of this application;
[0029] Figure 4 This is a schematic diagram of the structure in an embodiment of this application, showing four reinforcing ribs arranged at equal intervals.
[0030] Figure label:
[0031] Flat aluminum sheath 100
[0032] Transition part 200
[0033] Weld 310, peripheral weld 320,
[0034] Reinforcing rib 410. Detailed Implementation
[0035] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0036] In the description of this application, the use of terms such as "first," "second," etc., is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.
[0037] In the description of this application, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0038] In the description of this application, it should be noted that, unless otherwise explicitly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.
[0039] The technical solution of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this application, not all embodiments.
[0040] Figure 1 This is a schematic diagram of the structure of a high-voltage flat aluminum cable accessory with a reinforced structure according to an embodiment of this application; Figure 2 This is a structural schematic diagram of a standard high-voltage flat aluminum cable accessory; Figure 3 This is a schematic diagram of another high-voltage flat aluminum cable accessory with a reinforced structure according to an embodiment of this application; Figure 4 This is a schematic diagram of a structure in an embodiment of this application where four reinforcing ribs are equally spaced. Refer to the following... Figures 1 to 4 The embodiments of this application will be further described below.
[0041] refer to Figure 1 As shown in the embodiment of this application, a high-voltage flat aluminum cable accessory with a reinforced structure is proposed. The high-voltage flat aluminum cable accessory with a reinforced structure includes a flat aluminum sheath 100, a transition piece 200, a weld 310, and a reinforced structure.
[0042] A flat aluminum sheath 100 is fitted onto the tail of a high-voltage flat aluminum cable, and one end of the flat aluminum sheath 100 is provided with an enlarged diameter section.
[0043] The transition piece 200 has a connecting part at one end, which is used to engage with the expanded diameter part.
[0044] Weld 310 overlaps the flat aluminum sheath 100 and the transition piece 200, and covers the gap between the enlarged diameter part and the connecting part;
[0045] The reinforced structure is welded at one end to the flat aluminum sheath 100 and at the other end to the transition piece 200, and is located above the weld 310.
[0046] In this embodiment, by adding a reinforcing structure above the weld 310 that is simultaneously welded to the flat aluminum sheath 100 and the transition piece 200, the structure at the weld 310 is stabilized and strengthened. The strength of the welded connection between the flat aluminum sheath 100 and the transition piece 200 is improved, which can prevent weld breakage and enhance overall reliability. This ensures the sealing and electrical connection of the high-voltage flat aluminum cable accessory itself, thereby improving the reliability of the flat aluminum cable accessory and avoiding the accident risks that may be caused by weld breakage.
[0047] The aforementioned flat aluminum sheath 100, also known as smooth aluminum sheath, is manufactured during the production of high-voltage flat aluminum cable accessories such as smooth aluminum sheath cable terminals and joints. In order to prevent the cable insulation shield and insulation body from being burned, a diameter expansion process is often used to change the structure of the flat aluminum sheath 100 and the buffer layer that are in close contact. Specifically, a special diameter expansion tool is usually used to expand the smooth aluminum sheath into a flared shape. The aforementioned diameter expansion part is the flared structure.
[0048] The aforementioned transition piece 200 can be a transition piece 200 with a tapered opening and an inner diameter larger than that of the flat aluminum sheath 100. The aforementioned connecting part is the tapered opening. Specifically, the flared expansion part can be sleeved with the tapered connecting part, and then the gap between the expansion part and the connecting part is welded and sealed by welding process, thereby completing the connection between the flat aluminum sheath 100 and the transition piece 200.
[0049] It should be noted that the welding of the expanded flat aluminum sheath 100 to the transition piece 200 is a lap weld. The correct welding method for lap welds is to weld on both sides simultaneously. However, the welding of the flat aluminum sheath 100 to the transition piece 200 cannot meet this requirement, and only the outer part can be welded. This results in insufficient weld strength. In addition, considering the weight of the cable and cable accessories, in actual engineering, if only one weld 310 is welded, such as... Figure 2 As shown, weld fractures frequently occur at the weld between the transition piece 200 and the expanded flat aluminum sheath 100. Therefore, in this embodiment, a reinforcing structure is added to the existing weld 310, such as... Figure 1 As shown, this can improve the strength of the weld and reduce the occurrence of weld breakage.
[0050] like Figure 1 and Figure 2 As shown, the weld 310 overlaps with the flat aluminum sheath 100 and the transition piece 200, thus fixing the flat aluminum sheath 100 and the transition piece 200 together. Figure 1 As shown, the above-mentioned reinforcing structure is located above the weld 310. One end of it is welded to the flat aluminum sheath 100, and the other end is welded to the transition piece 200. It can further fix the flat aluminum sheath 100 and the transition piece 200. By combining the weld 310 with the reinforcing structure, the overall strength of the weld can be improved, and the weld breakage can be avoided.
[0051] In some embodiments, the reinforcing structure is arranged close to the flat aluminum sheath 100, weld 310 and transition piece 200.
[0052] In this embodiment, the reinforcing structure can be shaped by shaping tools or by hand so that the reinforcing structure is in close contact with the flat aluminum sheath 100, the weld 310 and the transition piece 200, which can play a better reinforcing role.
[0053] In some embodiments, when welding the flat aluminum sheath 100 and the transition piece 200 to the reinforcing structure, welding is performed around all four sides of the reinforcing structure to increase its strength. Figure 3 The peripheral weld 320 shown welds the flat aluminum sheath 100, the transition piece 200 and the reinforcing structure together, which can further improve the strength of the connection between the flat aluminum sheath 100 and the transition piece 200.
[0054] In some embodiments, the reinforcing structure is arranged perpendicular to the weld 310. For example... Figure 1 and 3 As shown, the reinforcing structure is long and narrow, with its length direction perpendicular to the circumference of weld 310. This arrangement is beneficial to improving strength.
[0055] In some implementations, such as Figure 3 As shown, the reinforcing structure includes multiple reinforcing ribs 410. The use of multiple reinforcing ribs 410 can effectively strengthen the weld 310.
[0056] In some implementations, the reinforcing structure includes four reinforcing ribs 410. Using four reinforcing ribs 410 can achieve the desired reinforcing effect while also taking cost into consideration, providing a cost-effective reinforcing structure solution.
[0057] In some implementations, such as Figure 4 As shown, multiple reinforcing ribs 410 are equally spaced on the circumference of the weld 310. The equal spacing of multiple reinforcing ribs 410 on the circumference of the weld 310 helps to ensure that the weld 310 is subjected to uniform stress after the reinforcing ribs 410 are installed, and avoids the phenomenon of uneven stress and fracture of the weld 310 caused by unequal spacing of the reinforcing ribs 410.
[0058] In some implementations, such as Figure 3 and Figure 4 As shown, the reinforcing structure includes four reinforcing ribs 410, and the four reinforcing ribs 410 are equally spaced on the circumference of the weld 310.
[0059] In some embodiments, the reinforcing rib 410 is made of a metal material that is easy to shape.
[0060] In some embodiments, the reinforcing rib 410 is a reinforcing rib aluminum sheet. Pure aluminum, as an easily shaped metal, can be used as the material for the reinforcing rib 410.
[0061] In some implementations, such as Figures 1 to 3 As shown, the flat aluminum sheath 100 includes:
[0062] First circular segment;
[0063] The expanded diameter section is a first conical ring structure, and the first circular ring segment is connected to the end of the first conical ring structure with the smallest inner diameter.
[0064] In this embodiment, the first annular segment of the flat aluminum sheath 100 is tightly fitted around the cable. The expanded diameter portion of the flat aluminum sheath 100 is usually made by changing the structure of the flat aluminum sheath 100 and the buffer layer through the diameter expansion process. Specifically, a special diameter expansion tool is usually used to expand the end of the flat aluminum sheath into a flared shape. The aforementioned expanded diameter portion is a flared structure, namely the aforementioned first conical ring structure. Since the first annular segment is connected to the end with the smallest inner diameter of the first conical ring structure, a flared structure is formed.
[0065] In some implementations, such as Figures 1 to 3 As shown, the transition member 200 includes:
[0066] Second circular segment;
[0067] The connecting part is a second conical ring structure, and the second circular ring segment is connected to the end with the largest inner diameter of the second conical ring structure.
[0068] In this embodiment, the second annular segment of the transition member 200 can be used to connect other electrical equipment or cables. The connecting part of the transition member 200 is a second conical ring structure. Since the second annular segment is connected to the end with the largest inner diameter of the second conical ring structure, a structure with a conical opening can be formed. It is understood that the inner diameter of the second annular segment of the transition member 200 is larger than the inner diameter of the first annular segment of the flat aluminum sheath 100.
[0069] In some embodiments, the transition member 200 is an aluminum transition member 200.
[0070] In this embodiment, the aluminum transition part 200 has the advantages of light weight, strong corrosion resistance, good thermal conductivity, excellent electrical performance, good processing performance, low cost, good oxidation resistance and low magnetism. It is widely applicable to a variety of industrial and electrical scenarios, can effectively reduce weight and cost, while ensuring good performance and reliability, and has a high cost performance.
[0071] In some embodiments, the specific manufacturing process of high-voltage flat aluminum cable accessories with reinforced structures is shown below.
[0072] First, a special tool for expanding the diameter is used to expand the smooth aluminum sheath of the flat aluminum cable to obtain a flared expansion section; then, the transition piece 200 is placed on the expanded flat aluminum cable so that the conical surface of the connecting part of the transition piece 200 fits into the flared opening of the expansion section of the flat aluminum sheath 100.
[0073] Secondly, after grinding the oxide layer of the part to be welded, use a laser welding machine to weld a weld 310 on the circumference. The weld 310 overlaps the flat aluminum sheath 100 and the transition piece 200. When welding, pay attention to making the weld 310 full.
[0074] Subsequently, the reinforcing rib 410, i.e. the reinforcing aluminum sheet, is placed on the flat aluminum sheath 100 and the transition piece 200. The reinforcing rib 410 aluminum sheet is shaped using a tool so that the reinforcing rib 410 is tightly attached to the flat aluminum sheath 100 and the transition piece 200, and the reinforcing rib 410 overlaps with the flat aluminum sheath 100 and the transition piece 200.
[0075] Finally, the oxide layer of the area to be welded is ground off. Using a laser welding machine, the reinforcing rib 410 is welded together with the flat aluminum sheath 100 and the transition piece 200. Welding is required around the reinforcing rib 410 to add a perimeter weld 320. After the transition piece 200 and the flat aluminum sheath 100 have cooled to room temperature, following the same steps, three more reinforcing ribs 410 are welded at the remaining three locations on the circumference of the weld 310. A total of four reinforcing ribs 410 are evenly spaced on the circumference of the weld 310. This completes the process, resulting in a high-voltage flat aluminum cable accessory with a reinforced structure. Figure 3 and Figure 4 As shown.
[0076] In this embodiment, by adding reinforcing ribs 410 in four uniform directions around the original weld 310, the strength of the single-sided lap weld is greatly improved. After verification, the weld strength of this process can withstand 130MPa for a long time without breaking, which far exceeds the self-weight of the high-voltage cable accessory itself and the 70MPa pressure brought by the self-weight of the 20m cable, thus meeting the actual use requirements.
[0077] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0078] Although the embodiments of this application have been described in detail above with reference to the accompanying drawings, this application is not limited to the above embodiments. Those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application. The scope of this application is defined by the claims and their equivalents.
Claims
1. A high-voltage flat aluminum cable accessory with a reinforced structure, characterized in that, include: A flat aluminum sheath is fitted onto the tail of a high-voltage flat aluminum cable, and one end of the flat aluminum sheath is provided with an enlarged diameter section. A transition piece, one end of which is provided with a connecting part, the connecting part being used to engage with the expanded diameter part; The weld seam overlaps the flat aluminum sheath and the transition piece, and covers the gap between the enlarged diameter portion and the connecting portion; The reinforcing structure is welded at one end to the flat aluminum sheath and at the other end to the transition piece, and is located above the weld.
2. The high-voltage flat aluminum cable accessory with a reinforced structure according to claim 1, characterized in that, The reinforcing structure is arranged in close proximity to the flat aluminum sheath, the weld, and the transition piece.
3. The high-voltage flat aluminum cable accessory with a reinforced structure according to claim 2, characterized in that, The reinforcing structure is arranged perpendicular to the weld.
4. The high-voltage flat aluminum cable accessory with a reinforced structure according to claim 3, characterized in that, The reinforcing structure includes multiple reinforcing ribs.
5. The high-voltage flat aluminum cable accessory with a reinforced structure according to claim 4, characterized in that, The reinforcing structure includes four reinforcing ribs.
6. The high-voltage flat aluminum cable accessory with a reinforced structure according to claim 4, characterized in that, Multiple reinforcing ribs are equally spaced on the circumference of the weld.
7. The high-voltage flat aluminum cable accessory with a reinforced structure according to any one of claims 4 to 6, characterized in that, The reinforcing rib is a reinforcing aluminum sheet.
8. The high-voltage flat aluminum cable accessory with a reinforced structure according to claim 1, characterized in that, The flat aluminum sheath includes: First circular segment; The expanded diameter section is a first conical ring structure, and the first circular ring segment is connected to the end of the first conical ring structure with the smallest inner diameter.
9. The high-voltage flat aluminum cable accessory with a reinforced structure according to claim 1, characterized in that, The transition component includes: Second circular segment; The connecting part is a second conical ring structure, and the second ring segment is connected to the end with the largest inner diameter of the second conical ring structure.
10. The high-voltage flat aluminum cable accessory with a reinforced structure according to claim 1, 2, or 9, characterized in that, The transition component is an aluminum transition component.