天然气管道过流焊接辅助装置设计研究
Design and research of auxiliary device for natural gas pipe welding
浏览(1068) 下载(25)
- 引用格式:
-
张圣兵,王帅,卿勇,赵小彬,韩传军.天然气管道过流焊接辅助装置设计研究[J].天然气与石油,2022,40(3):22-27.doi:10.3969/j.issn.1006-5539.2022.03.004
ZHANG Shengbing, WANG Shuai, QING Yong, ZHAO Xiaobin, HAN Chuanjun.Design and research of auxiliary device for natural gas pipe welding[J].Natural Gas and Oil,2022,40(3):22-27.doi:10.3969/j.issn.1006-5539.2022.03.004
- DOI:
- 10.3969/j.issn.1006-5539.2022.03.004
- 作者:
- 张圣兵1 王帅1 卿勇1 赵小彬1 韩传军2
ZHANG Shengbing1, WANG Shuai1, QING Yong1, ZHAO Xiaobin1, HAN Chuanjun2
- 作者单位:
- 1. 中国石油天然气股份有限公司西南油气田分公司, 四川 成都 610041; 2. 西南石油大学机电工程学院, 四川 成都 610500
1. PetroChina Southwest Oil & Gas Field Company, Chengdu, Sichuan, 610041, China; 2. Mechanical and Electrical College, Southwest Petroleum University, Chengdu, Sichuan, 610500, China
- 关键词:
- 天然气管道;隔离;引流;焊接质量
Natural gas pipeline; Isolation; Drainage; Welding quality
- 摘要:
- 天然气管道或输气站场设备设施抢维修改造时,常需要进行焊接动火作业,但因阀门内漏或管网窜气,易造成焊缝位置可燃气体溢出或空气吸入,焊接质量难以保证,且动火作业风险大。设计了一种天然气管道过流焊接辅助装置,装置具有独立驱动单元,可双向遥控移动,导流管两端安装有密封气胎,可自动充放气,在导流同时密封隔绝焊缝两端管路,不但能够防止可燃性气体泄漏引发失火或爆炸危险,而且可以消除气体流动影响,提高焊接质量。天然气管道过流焊接辅助装置适用于直径 200 mm 直管或不小于90°的弯管管道,现场测试表明该装置响应迅速、动作灵敏、定位准确,较好地实现了密封引流效果,可有效提高存在气流情况下的管道焊接安全性和焊接质量。
When urgent repair or modification of natural gas pipeline or gas transmission station equipment and facilities are required, it is often necessary to carry out welding and hot work. However, due to internal leakage of valves or gas channeling in the pipe network, it is easy to result in flammable gas release or air ingress at the weld position. Hence it is difficult to guarantee the welding quality. Moreover, the risk of hot work is high. For the above reasons, an auxiliary device was designed for natural gas pipeline welding, which has an independent driver element and can be moved remotely in two directions. The two ends of the draft tube are equipped with air-tight pneumatic tires, which can automatically inflate and deflate. In addition to preventing the risk of fire or explosion caused by the leakage of flammable gas, the positively isolating both sides of the weld inside the pipeline can also eliminate the influence of gas flow and improve the welding quality. The device is suitable for straight pipes with a diameter of 200 mm or elbows with a bend greater than 90°. Field tests have shown that the device responds quickly, is agile, and positions accurately. It achieves a better sealing and drainage effect and can effectively improve welding safety and welding quality in the presence of gas flow.
