SECTIONED CRYOGENIC PIPELINE Russian patent published in 2023 - IPC F16L9/18 F16L9/22 

FIELD: gas processing industry.

SUBSTANCE: invention can be used in the gas processing industry, in the system of sea and river transport and other industries. The partitioned cryogenic pipeline for pumping liquefied gases includes metal rigid linear sections and metal deformable sections, the ground part, the underwater part, the floating pontoon part. Each of the metal rigid linear sections contains a rigid linear inner product pipe coaxially placed in a cylindrical rigid casing with a lens and/or bellows compensator. The cylindrical rigid casing at the ends is hermetically coupled to the outer surface of a rigid linear inner product pipe with a lens and/or bellows compensator using rings. Each of the metal deformable sections contains a corrugated deformable inner product pipe with a smooth transition at the ends, coaxially placed in a corrugated casing, which at the ends is hermetically coupled to the outer surface of the smooth transitions at the ends of the corrugated deformable inner product pipe using rings. Sections are connected between each other by means of flanges fixed at the inlet and outlet ends of the product pipes. The space of metal rigid linear sections between the outer surface of a rigid linear inner product pipe and a cylindrical rigid casing, bounded by rings, forms a vacuum insulation zone. The space of metal deformable sections between the outer surface of the corrugated deformable inner product pipe and the deformable casing, bounded by rings, is filled with an elastic heat-insulating substance and forms a thermal insulation zone using materials with low thermal conductivity. The space between the outer the surface of two product pipes connected by means of flanges of two adjacent sections, bounded on both sides by rings, is filled with an elastic heat-insulating substance and covered with semi-cylindrical overlapping plates fixed by detachable fastening clamps.

EFFECT: claimed invention simultaneously provides high thermal insulation qualities, variability of the pipeline profile, cost reduction during its laying and its adaptation to the effects of external and internal dynamic forces arising during the operation of the pipeline.

18 cl, 7 dwg,17