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Tracer Line Concept
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With the further popularization of PE pipelines in the natural gas and water supply industries, PE pipes are gradually replacing steel pipes and cast iron pipes in gas medium/low pressure pipeline networks; Due to the non conductivity and non magnetism of the PE pipe, it is not possible to trace the PE pipe, which brings inconvenience to future pipeline maintenance. Therefore, tracing lines also appear. The commonly used "tracer wires" in the current market include copper clad steel material tracer wires, thin film steel wire pressed tracer wires, and wire tracer wires.
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Tracer line effect
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The "tracer line" is used for detecting, tracing, and locating PE pipelines;
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The "tracer line" is laid together with the PE pipe; Generally, metal wire cores are used to apply signals to the "metal wire" through detection equipment, and the detection receiver receives the signal to find the accurate position of the tracing line, that is, synchronously tracing to the specific position of the PE gas pipeline; To facilitate the renovation and maintenance of PE pipelines.
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The development of tracer lines has gone through three generations:
1.´úʾ×ÙÏߣºÊÇÓÉÂÁ²­ºÍËÜÁϱ¡Ä¤µÄĸÌå×é³É£¬ÂÁ²­Ö÷ÒªÊÇ´«ÊäÐźÅ£¬Ä¸ÌåÊÇÀο¿ÂÁ²­  ¡£ÕâÖÖʾ×ÙÏßÈõµã£ºÂÁ²­Ç¿¶ÈºÜÊǵÍ£¬×ÝÈ»ÔÚÉú²ú£¬ÔËÊäÀú³ÌÖÐÒ²ºÜÈÝÒ׶ÏÁÑ£¬¸¨ÉèÒ×ËðÉË£¬Í¬Ê±ÂÁ²­µÄµç×èºÜÊÇ´ó£¬ÓÐÓÃ̽²â¾àÀëºÍÉî¶ÈÓÐÏÞ  ¡£
1. First generation tracer line: It is composed of a matrix of aluminum foil and plastic film, with aluminum foil mainly used for signal transmission and the matrix being fixed aluminum foil. The disadvantage of this tracer line is that the strength of aluminum foil is very low, and even during production and transportation, it is easy to break, and the auxiliary equipment is easily damaged. At the same time, the resistance of aluminum foil is very high, and the effective detection distance and depth are limited.
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2.µÚ¶þ´úʾ×ÙÏߣºÊÇÓɸÖË¿ºÍËÜÁϱ¡Ä¤Ñ¹Öƶø³É£¬¸Ãʾ×ÙÏßÓɸÖ˿Ϊµ¼Ì壬µç×è´ó£¬Ì½²â¾àÀëÓÐÏÞ£¬ÄÑÒÔÖª×ãÏÖʵÐèÒª  ¡£
2. Second generation tracer line: It is made by pressing steel wire and plastic film. The tracer line is made of steel wire as the conductor, with high resistance and limited detection distance, making it difficult to meet practical needs.
3.µÚÈý´úʾ×ÙÏߣºÊÇÓÉÍ­°ü¸Ö½ðÊôÏßоºÍPEÍâ±£»¤²ã×é³É£¬Íâ¹Û³ÉÏß×´  ¡£ÒÔÏÂÒÔHX-13IIʾ×ÙÏßΪÀý
3. Third generation tracer wire: It is composed of copper clad steel metal wire core and PE outer protective layer, with a linear appearance. Taking the HX-13II tracer line as an example
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Tracer line structure
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1. PE outer protective layer, insulation, anti-corrosion, waterproof and anti-aging
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2. Copper layer enhances conductivity and improves electrical signal
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3. Steel core to enhance the strength of the wire body
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4. Double line connected structure, which can ensure that two lines are equally and uniformly stressed
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Advantages of tracer lines
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1. Low resistance
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2. High tensile strength
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3. Strong corrosion resistance and aging resistance
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4. Double line advantage
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5. There is a dedicated protective joint connected at the connection point
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Connection method
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The tracer line has a special protective connector for the connection between lines. The connector has a waterproof and anti-corrosion sealed chamber. The exposed wire ends of the tracer line are placed in the sealed chamber, so as to protect the exposed missing wire ends from corrosion. The connector is made of PE material and has corrosion resistance and aging resistance.

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