Supporting structure in high-pressure double-wall pipe

The utility model belongs to the field of double-wall pipe inner support, and particularly relates to a high-pressure double-wall pipe inner support structure which comprises an annular clamp body, the annular clamp body is sleeved outside an inner pipe and fixed with the inner pipe, and the annular clamp body is fixed with the inner wall of an outer pipe or fixed with the outer pipe in an adjustable allowance mode in the axial direction and the radial direction of the outer pipe. The supporting structure is of an annular structure, welding does not need to be conducted at a specific position when the supporting structure is installed and fixed, the problem that in the prior art, the installation efficiency of a supporting structure is low is avoided, and due to the fact that the supporting structure is of a symmetrical structure, high stress caused by the fact that an inner pipe conveys media with high pressure can be resisted. 本实用新型属于双壁管内支撑领域，具体涉及提供一种高压双壁管内支撑结构，包括环形夹体，所述环形夹体套在所述内管外，且与所述内管固定，所述环形夹体与所述外管内壁固定死