目前，市场上有多种示踪线。哪种示踪线较好，更有利于对埋地天然气管道的长期跟踪定位管理。需要测试示踪线的性能以选择更合适的示踪剂。金属丝。

At present, there are many kinds of trace lines on the market. Which kind of tracing line is better, which is more conducive to 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 suitable tracer. Wire.

铜包钢是由钢芯线和紧紧包裹在其周围的铜层组成的金属芯。外侧为PE防腐层。铜起传导微弱电信号的作用，钢丝起支撑作用。

Copper clad steel is a metal core composed of steel core wire and copper layer tightly wrapped around it. The outer side is PE anticorrosive coating. Copper plays the role of conducting weak electrical signals, and steel wire plays the role of support.

铜芯线一般由内层铜芯线、中间层绝缘护套和外层保护套组成。铜包铝由铝芯线和将其紧紧包裹形成金属芯的铜层组成，外层为PE防腐层。

Copper core wire is generally composed of inner copper core wire, intermediate insulating sheath and outer protective sheath. Copper clad aluminum is composed of aluminum core wire and copper layer tightly wrapped to form metal core, and the outer layer is PE anticorrosive coating.

由于钢制燃气管道外层防腐层为塑料层或具有绝缘防腐性能的涂层，其结构类似于铜包钢、铜芯线、铜包铝和其他外层，它们也是具有绝缘和防腐性能的塑料层。因此，我们采用两个等效物，采用PCM管道电流衰减率法来测试示踪线防腐层的平均绝缘质量。

As the outer anti-corrosion layer of steel gas pipeline is plastic layer or coating with insulation and anti-corrosion performance, its structure is similar to copper-clad steel, copper core wire, copper-clad aluminum and other outer layers, which are also plastic layers with insulation and anti-corrosion performance. Therefore, we use two equivalents and PCM pipeline current decay rate method to test the average insulation quality of the anti-corrosion coating of the tracer line.

燃气示踪线厂家认为检测原理是向示踪剂施加一定频率的电流信号，电流从示踪剂传到远处会逐渐衰减。其衰减与示踪剂塑料层的绝缘电阻率有关。示踪剂塑料层的平均绝缘电阻率越高，电流衰减越慢，反之亦然。

The manufacturer of gas tracing line believes that the detection principle is to apply a certain frequency of current signal to the tracer, and the current will gradually decay when it is transmitted from the tracer to a distance. Its attenuation is related to the insulation resistivity of the tracer plastic layer. The higher the average insulation resistivity of the tracer plastic layer, the slower the current attenuation, and vice versa.

铜包钢、铜芯线、铜包铝三根示踪线埋设在同一条PE燃气管道上方。PE管道总长约717m，然后测试了三根示踪线的导电性和防腐性。和强度，然后进行数据分析，以对示踪剂进行评估。

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 three tracer wires are tested. And intensity, and then conduct data analysis to comprehensively evaluate the tracer.

铜包钢示踪线在强度方面优势明显。在传导探测信号时也能满足探测和示踪的需要，施工也更加方便。如果能做好接头的防腐处理，示踪线是划算的。

Copper clad steel tracer wire has obvious advantages in strength. It can also meet the needs of detection and tracing when conducting detection signals, and the construction is more convenient. If the anti-corrosion treatment of the joint can be done well, the tracer line is cost-effective.

铜芯线示踪线对检测信号的传导性优良，但接头部位的防腐方法比较简单，接头部位的防腐质量不能保证，强度稍差。因此，铜芯线不宜用作地埋燃气管道的示踪线。

The copper core trace line has excellent conductivity to the detection signal, but the anti-corrosion method of the joint is relatively simple, the anti-corrosion quality of the joint can not be guaranteed, and the strength is slightly poor. Therefore, copper core wire should not be used as a tracer wire for buried gas pipelines.

铜包铝示踪线在强度和信号传导方面没有优势。如果接头防腐处理不好，1-2a内就会完全腐蚀断裂。因此，不适用于埋地燃气管道的示踪剂。

Copper clad aluminum tracer wire has no advantage in strength and signal transmission. If the anti-corrosion treatment of the joint is not good, it will be completely corroded and broken within 1-2a. Therefore, it is not suitable for tracer of buried gas pipeline.

因此，我们对以上三种常用的示踪线进行了测试，从示踪线电导率、示踪线接头防腐处理、示踪线强度等方面为PE输气管道示踪线的选择提供了参考。为您提供帮助，请关注我们http://www.binzhouhengtong.com了解更多！

Therefore, we have tested the above three commonly used tracer lines, which provides a reference for the selection of PE gas transmission pipeline from the aspects of tracer line conductivity, anti-corrosion treatment of tracer line joints, and tracer line strength. To help you, please follow us http://www.binzhouhengtong.com Learn more!