鐘鳴 吳明


摘 要:對聚乙烯管道關鍵部位和高風險段監測方法的研究對管道安全運行和管道周邊人身安全有重要意義。對國內外管道檢測技術進行匯總并根據其特點進行分類,將檢測方法分為:電磁檢測、聲波檢測、光波檢測、壓力檢測、管道機器人和直接評價。并對各自優缺點進行簡要分析,并根據城鎮聚乙烯燃氣管網的特點,建立了城鎮聚乙烯燃氣管道關鍵部位及高風險段檢測體系,以期為降低城鎮燃氣管網事故發生概率提供一定的理論基礎。
關 鍵 詞:聚乙烯管道;檢測技術;關鍵部位;高風險段
中圖分類號:TQ 352 文獻標識碼: A 文章編號: 1671-0460(2015)10-2381-03
Detection Methods of Key Parts and High-risk
Segments of City Gas Polyethylene Pipes
ZHONG Ming,WU Ming
(College of Petroleum and Natural Gas Engineering, Liaoning Shihua University, Liaoning Fushun 113001,China)
Abstract: Research on safety monitoring methods of key parts and high-risk segments of city gas polyethylene pipe has great significance to safe running of the pipe and personal safety. In this paper, pipeline inspection technologies at home and abroad were summarized and classified according to their characteristics. The detection methods were divided into electromagnetic testing, acoustic detection, lightwave detection, pressure detection, pipeline robot and direct evaluation. And their advantages and disadvantages were analyzed. According to the characteristics of urban polyethylene gas pipe network, the detection system of key parts and high-risk segment of town polyethylene gas pipeline was established, which could provide a theoretical basis for reducing the urban gas pipeline accident probability.
Key words: Polyethylene pipe;Detection technology;Key parts;High risk period
近年來,我國城鎮燃氣管道迅猛發展,并且聚乙烯管道以其價格低廉、材料來源廣泛、質量輕便、易施工、耐腐蝕等特點,在中低壓端城市燃氣管網中逐步取代了傳統的鑄鐵管和鋼管,成為了城鎮燃氣管網中重要的組成部分。但受外界因素、應力破壞等一系列因素的影響,聚乙烯燃氣管道易發生泄漏、爆炸等安全事故,由于城鎮人口、建筑密集,人員活動頻繁,燃氣管道一旦發生事故,所造成的人身、財產及環境危害相對于野外長距離輸送管道事故危害更大。管道檢測技術可及時的發現管道在運行過程中存在的問題及安全隱患,及時的修補維護會降低管道事故造成的損失,現行管道檢測技術方法呈多元化發展,各自特點、用途均存在一定的差異性。因此,尋找科學、合理、適用于城鎮聚乙烯燃氣管道的檢測方法和檢測體系,對城鎮燃氣管道安全運行,保護人身及財產的安全具有重要的意義。……