為了更有利于對埋地天然氣管道的長期跟蹤定位管理，需要對示蹤線的性能進行測試，以選擇更合適的示蹤線。因此，我們對燃氣管道中常用的示蹤線進行了測試，從示蹤線電導率、示蹤線接頭防腐處理、示蹤線強度等方面為天然氣管道示蹤線的選擇提供參考。

In order to facilitate the long-term tracking and positioning management of buried natural gas pipelines, it is necessary to test the performance of the tracer line to select a more appropriate tracer line. Therefore, we have tested the commonly used tracer lines in gas pipelines to provide reference for the selection of tracer lines in natural gas pipelines from the aspects of tracer line conductivity, anti-corrosion treatment of tracer line joints, and tracer line strength.

測試概述

Test overview

，將銅包鋼、銅芯線、銅包鋁三根示蹤線埋在同一條PE燃氣管道上方。PE管道全長約717m，然后對接頭的導電性和防腐性進行測試。性能和強度，其次是數據分析，對示蹤劑進行綜合評價。

First, the copper-clad steel, copper core wire and copper-clad aluminum are buried above the same PE gas pipeline. The total length of PE pipe is about 717m, and then the conductivity and corrosion resistance of the joint are tested. Performance and strength, followed by data analysis, comprehensive evaluation of the tracer.

測試項目

Test items

①使用PCM管道電流衰減率法測試評估各種示蹤線對檢測信號的導通情況；

① PCM pipeline current decay rate method is used to test and evaluate the conduction of various trace line pairs;

②對各種示蹤線施工過程中接頭的防腐處理進行測試，評估示蹤線在長期埋藏后是否能保持連接不被腐蝕和斷裂；

② Test the anti-corrosion treatment of joints during the construction of various trace lines, and evaluate whether the trace lines can keep the connection from corrosion and fracture after long-term burial;

③測試評估3條示蹤線是否同時埋設在某段PE燃氣管道上，能否準確定位管道空間位置。

③ Test and evaluate whether the three tracing lines are buried on a PE gas pipeline at the same time, and whether the spatial position of the pipeline can be accurately located.

檢測數據分析

Test data analysis

①檢測數據系統分析表明，銅包鋼、銅芯線、銅包鋁三種示蹤線在相同交叉條件下，檢測電流的信號傳導無明顯差異。截面積。兩條鋁包線的走線傳導信號幾乎一樣，銅芯線的走線傳導信號稍好一些，但沒有顯著差異。

① The systematic analysis of the test data shows that there is no significant difference in the signal conduction of the test current under the same crossing conditions for the three kinds of trace wires: copper-clad steel, copper core wire and copper-clad aluminum. Sectional area. The routing conductive signals of the two aluminum clad wires are almost the same, and the routing conductive signals of the copper core wire are slightly better, but there is no significant difference.

②三種燃氣示蹤線在接頭的防腐處理上有很大的不同。在測試中，這三根示蹤線的接頭處都存在漏電問題，尤其是銅包鋁，漏電接頭較多。這些泄漏點埋藏時間長了，示蹤線就會被腐蝕斷開，失去示蹤對管道的作用。銅芯線示蹤線接頭經過良好的防腐處理，僅發現一處漏電問題，其次是銅包鋼示蹤線。

② There are great differences among the three kinds of fuel gas tracing lines in the anti-corrosion treatment of joints. During the test, there were leakage problems at the joints of the three trace wires, especially the copper-clad aluminum, with many leakage joints. If these leakage points are buried for a long time, the tracing line will be corroded and disconnected, and the tracing effect on the pipeline will be lost. After good anti-corrosion treatment, only one leakage problem was found in the copper core tracer wire joint, followed by the copper-clad steel tracer wire.

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