Oxygen-blocking thermal insulation pipe

The utility model relates to the field of conveying pipelines, and discloses an oxygen-blocking thermal insulation pipe which comprises a pressure-bearing layer, and a first bonding layer, an oxygen-blocking layer, a second bonding layer, a thermal insulation layer, a third bonding layer and a protective layer which are sequentially arranged on the periphery of the pressure-bearing layer from inside to outside. The utility model has the beneficial effects that the heat preservation layer and the oxygen barrier layer respectively have heat preservation and oxygen barrier functions, the first bonding layer, the second bonding layer and the third bonding layer are respectively arranged between the pressure bearing layer and the oxygen barrier layer, between the oxygen barrier layer and the heat preservation layer and between the heat preservation layer and the protective layer, and the three bonding layers are made of proper materials and have proper thicknesses; the four-layer structure with different functions