A two-way butt-piercing detection device for long pipelines

Abstract

The invention discloses a long-pipe bidirectional butt-joint through-pipe detection apparatus. The apparatus comprises a first through-pipe device and a second through-pipe device. An end portion of the first through-pipe device is provided with a first magnetic guiding butt joint. An end portion of the second through-pipe device is provided with a second magnetic guiding butt joint. On the first through-pipe device, a tracer probe is installed on a rear portion of the first magnetic guiding butt joint. The first through-pipe device and the second through-pipe device are oppositely penetrated from two ends of a long pipe. Through mutual attraction between the first magnetic guiding butt joint and the second magnetic guiding butt joint, a butt joint state is realized. The invention provides the long-pipe bidirectional butt-joint through-pipe detection apparatus. The apparatus can simultaneously receive a tracer line signal and a tracer detection signal. Detection reliability is increased. Simultaneously, magnetic butt joint is adopted for a super long pipe so that tracer line through connection is realized and detection of a super deep pipe is solved.

Description

technical field [0001] The invention relates to a pipeline detection device, in particular to a long pipeline two-way butt joint penetration detection device. Background technique [0002] At present, underground pipeline detection mainly uses pipeline detectors to apply signals to metal pipelines for positioning and depth determination. For non-metallic pipelines, pipeline detectors cannot be used for direct detection, and the following methods need to be used. [0003] Pipe tracer line method: use a pipe threader to carry the tracer wire (metal wire) into the pipe from one end, or pass it out from one end of the pipe, and pull the tracer wire back into the pipe. Use the transmitter of the pipeline detector to directly connect the tracer line to apply the signal, so that the receiver can be used for pipeline location detection. The disadvantage of this method is: the pipe threader carries the tracer line at the same time, which increases the difficulty of threading the pip...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is: the pipe threader carries the tracer line at the same time, which increases the difficulty of threading the pipe, and the tracer line is easy to be knotted and blocked during operation, and the method of threading and pulling back is cumbersome, time-consuming and labor-intensive

Disadvantages: It is a single-point signal and cannot perform linear tracking of the signal

[0005] Geological radar method: using geological radar for detection, burying shallow and large-diameter pipelines has a good effect, but it cannot be solved for large buried deep pipes, and the instrument is expensive and the cost of use is high

[0006] Inertial gyroscope method: It has high positioning accuracy, but it has high requirements for the patency of the pipeline, and the instrument is expensive and the cost of use is high

[0007] Existing non-metallic pipe detection methods have defects such as high cost, single function, and lack of verification

Images