Pipeline annular self-traveling guide apparatus and method

A pipeline annular self-guiding apparatus, comprising an inner annular groove and an outer annular groove, the inner annular groove and the outer annular groove being coaxially configured, wherein

• a cutout of the outer annular groove is facing radially inward, a cutout of the inner annular groove is facing radially outward, the cutout of the outer annular groove is opposite to the cutout of the inner annular groove;
• the inner annular groove is configured with a first pipeline fixing part, the outer annular groove is configured with a second pipeline fixing part, the first pipeline fixing part is configured with a pipeline inlet hole communicated with the inner annular groove, and the second pipeline fixing part is configured with a pipeline outlet hole communicated with the outer annular groove;
• and
• between the inner annular groove and the outer annular groove an annular bracket configured to freely rotate along a circumferential direction is correspondingly configured, a pipeline supporting roller group is configured on the annular bracket, the pipeline supporting roller group comprises a plurality of pipeline supporting rollers configured at intervals along a circumferential direction and is configured to rotate freely by themselves, central axes of the pipeline supporting rollers are parallel to central axes of the inner annular groove and the outer annular groove, and gaps for laying pipelines are reserved between a circumferential surface of the pipeline supporting roller and the groove inner bottom surfaces of the inner annular groove and the outer annular groove.