High-vacuum multilayer pipeline

The utility model discloses a high vacuum multilayer pipeline, which relates to the pipe fitting field, and comprises a first pipe body communicated with the indoor, one end of the first pipe body close to the outdoor is communicated with a second pipe body, the second pipe body is provided with a through hole for the first pipe body to pass through, the second pipe body is sleeved with a sleeve, and the inside of the sleeve is vacuum. Through the arrangement of the heat preservation layer and the vacuum pipe sleeve, when the temperature change of liquid flowing in the pipe fitting is large, and the temperature difference is large, the pipe fitting exposed outdoors is not prone to being affected and deforming. 本实用新型公开了一种高真空多层管道，涉及管件领域，包括与室内连通的第一管体，所述第一管体靠近室外的一端连通有第二管体，所述第二管体开设有供所述第一管体穿过的通孔，所述第二管体外部套设有套管，所述套管内部真空。本申请通过设置保温层和真空管套，当管件内流通液体的温度变化较多，温差较大时，裸露在室外的管件不容易受到影响产生变形。