SSLB500型高压电缆铝护套立式双轴连续包覆机的研制  

Development of SSLB500 Continuous Extrusion Machine for High⁃Voltage Cable Aluminum Sheathing

作　　者：樊志新[1] 高晓钰 裴久杨[1] 刘元文[1] 闫志勇 宋宝韫[1,2] FAN Zhixin;GAO Xiaoyu;PEI Jiuyang;LIU Yuanwen;YAN Zhiyong;SONG Baoyun(ERC of Continuous Extrusion Ministry of Education,Dalian Jiaotong University,Dalian 116028,China;Dalian Konform Co.,Ltd.,Lushun 116050,China)

机构地区：[1]大连交通大学连续挤压教育部工程研究中心,辽宁大连116028 [2]大连康丰科技有限公司,辽宁旅顺116050

出　　处：《电线电缆》2021年第1期39-42,46,共5页Wire & Cable

基　　金：国家自然科学基金项目(51705062,51505056);大连市科技之星项目(2017RQ139)。

摘　　要：金属护套是交联聚乙烯绝缘高压电缆的重要组成部分,介绍了高压电缆铝护套现有生产工艺及设备的特点;基于四通道连续包覆工艺,开发了SSLB500型高压电缆铝护套立式双轴连续包覆机,检测了挤出铝护套的尺寸和性能,分析了生产数据。研制结果表明:基于数值模拟优化结果设计的工模具结构合理,铝护套成型圆度达到99%,厚度偏差在±5%之内,焊合区域结合强度达到78.8 MPa,延伸率达到33.3%,与非焊合区性能相同;设备长时间运行稳定可靠,主轴转速在6~7.5 r/min时,平均产量达到738 kg/h,平均能耗440 k Wh/t,溢料率小于7%。综合数据表明,所开发的四通道连续包覆工艺及设备具有产品质量好、生产效率高、运行成本低的优点,满足电缆制造企业提质增效的需求。Metal sheath is an important part of XLPE high-voltage cable,the characteristics of existing process and equipment for cable aluminum sheath were introduced. SSLB500 continuous extrusion machine was developed which is in the vertical model and with double shafts. The size and performance of extruded aluminum sheath were tested,the production data was analyzed. The results show that the structure of the die is reasonable which is designed based on the optimization results of numerical simulation,the roundness of extruded aluminum sheath reaches 99%,the thickness deviation is within ± 5%. The bonding strength in the welding area is 78. 8 MPa and the elongation is33. 3%,the same performance as the welded free zone. The machine can run steadily and reliably for a long time,the average output is 738 kg/h when the main shafts run between 6 ~ 7. 5 r/min,the average energy consumption is440 k Wh/t,the flash rate is less than 7%. All the data show that the process and equipment have the advantages of good product quality,high production efficiency and low running cost,which can meet the requirements of quality and efficiency improvement in cable manufacturing enterprises.

关 键 词：XLPE电力电缆 铝护套 连续挤压 四通道连续包覆 

分 类 号：TG375[金属学及工艺—金属压力加工]