A lead-out wiring structure and wiring method of tracer lines inside buried PE pipes

Abstract

The invention discloses a lead-out connection structure and method for a trace line in a buried PE pipe. The connection method comprises the steps that a through hole is formed in the lead-out position of the PE pipe, and a metal screw rod penetrating through the through hole is installed in the through hole; a sealing rubber ring is installed at the joint between the metal screw rod and the PE pipe, and the metal screw rod is fixed to the PE pipe through a fastening nut; the trace line in the PE pipe is fixed to the lower end of the metal screw rod through a fixing screw, the fastening nut is sleeved with a plastic sealing cover, and a trace line outside the PE pipe is fixed to the upper end of the metal screw rod through a fixing screw; and the plastic sealing cover is filled with anti-corrosion sealing materials, the plastic sealing cover is clamped to the metal screw rod, and therefore lead-out connection of the trace line in the PE pipe can be completed. According to the lead-out connection structure and method, the concept is ingenious, the structure is simple, possibility is provided for outward leading of the trace line in the PE pipe at any position, the tracing difficulty is effectively lowered, and the extremely good waterproof anti-corrosion property and the high connection tensile strength are achieved.

Description

technical field [0001] The invention belongs to the technical field of PE pipe tracer wire detection, and in particular relates to a lead-out wiring structure and a wiring method of tracer wires inside buried PE pipes. Background technique [0002] PE pipe has been widely used in the construction of urban buried gas pipeline network in recent years due to its advantages of convenient construction, lower engineering cost than steel pipe (less than DN300), no corrosion leakage, and less pollution to transported substances. Although PE pipes have many advantages, their low strength is their biggest weakness. In the past municipal construction, because the exact location of the pipes was not very clear, it was very common for them to be cut off and leaked by construction machinery. Gas explosion accidents also occur from time to time; in addition, due to the application of trenchless technology, various types of deep-buried pipelines have been produced, which makes it even more ...

AI Technical Summary

Problems solved by technology

Generally, tracer lines are laid outside the pipeline, but when laying PE pipelines in non-excavation construction (directional drilling through construction), the tracer lines outside the pipeline will be pulled off in most cases and can no longer be used to apply signals Detect the position and buried depth of the pipeline without losing the role of tracer line

In the prior art, the lead-out of the metal tracer wire inside the buried PE pipeline mainly uses the steel-plastic conversion joint of the pipeline. The position of the steel-plastic conversion joint is not designed and the metal tracer wire cannot be led out, resulting in the tracer of the buried PE pipeline. There are breakpoints and incompleteness in the line, which brings difficulties to the subsequent pipeline detection and positioning

[0004] In the Chinese patent with the application number "CN201520856229.5", a utility model patent titled "Tracing device and pipeline device with the same" is disclosed, wherein the tracing device includes: a protective tube and at least one tracer trace assembly, each trace assembly includes a first trace wire and a second trace wire, the first end of the first trace wire is connected with the first end of the second trace wire, the first trace wire The second end of the second end of the tracer line and the second end of the second tracer line are both free ends. When the pipeline needs to be detected, the free end of the tracer line assembly is connected to the transmitter. Since the transmitter and the tracer line assembly form a closed loop, the emission The signal transmitted by the transmitter flows back to the transmitter through the tracer wire assembly, but the tracer wire is very thin, generally only 1.5-2.5 mm 2 , in the process of laying, as long as there is a little bit of broken bricks, tiles, and weathered stones, the tracer line will be broken. The disadvantage of this tracer device is that once the tracer line has breakpoints, incompleteness, etc., it will not be able to Determining the exact position of the pipeline with the tracer line tracking device

In this case, how to lead out the tracer line inside the pipeline to apply the detection signal without causing gas pipeline leakage has become an urgent problem to be solved, which brings certain difficulties to the detection work of the tracer line

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