Conveying pipeline of indirect cooling tower flat bridge pumping water return system

The utility model relates to the technical field of conveying pipelines. The utility model further discloses a conveying pipeline of the flat bridge pumping water return system of the indirect coolingtower. The device comprises a conveying pipeline and a flow meter, a second inner interlayer is arranged on the outer side wall of the conveying pipeline, the second inner interlayer and the conveying pipeline are bonded and fixed, a first inner interlayer is arranged outside the second inner interlayer, and the first inner interlayer is fixedly connected with the second inner interlayer; an inner interlayer II is arranged on the outer side wall of the conveying pipeline; an inner interlayer I is arranged outside the inner interlayer II; a vacuum layer is formed between the two interlayers; no air flows between the inner interlayer I and the outer interlayer II for isolation, the vacuum layer can enable materials in the pipeline not to dissipate heat easily, in this way, the materials canbe prevented from being c