Elastic supporting structure for LNG double-wall pipes

Abstract

The invention discloses an elastic supporting structure for LNG double-wall pipes. The elastic supporting structure comprises outer clamping rings, inner pipe clamping ring pieces and spring pieces, wherein the outer clamping rings are symmetrically arranged and matched with each other, the inner pipe clamping ring pieces and the outer clamping rings are coaxially arranged, one ends of the spring pieces are welded to the inner pipe clamping ring pieces, and the other ends of the spring pieces are connected with the outer clamping rings through bolts and nuts. According to the elastic supporting structure, the spring pieces are arranged between the outer clamping rings and inner clamping rings, and therefore the elastic supporting structure can be applied to the LNG double-wall pipe with the inner pipe diameter and the outer pipe diameter having certain deviation and can also be applied to the LNG double-wall pipe with the supporting space in the double-wall pipe changed due to thermal expansion and cold contraction, the application range and conditions of the elastic supporting structure are expanded, and the market competitiveness of the elastic supporting structure is improved. Secondly, when the elastic supporting structure is used in the LNG double-wall pipes, the problem that the LNG double-wall pipes vibrate during gas supply work of the LNG double-wall pipes can be solved. Finally, only damaged parts need to be replaced during maintenance, and therefore the reutilization rate of the parts is increased, and the operation cost of the LNG double-wall pipes is reduced.

Description

technical field [0001] The invention relates to a support frame, in particular to an elastic support structure for LNG double-wall pipes. Background technique [0002] The LNG double-wall pipes on the market include inner pipes and outer pipes. Most of the LNG double-wall pipes currently on the market mainly use welding to fix the inner pipes and outer pipes. Although this method makes the LNG double-wall pipes The structure becomes simple, but there are two problems: [0003] (1) There is a large potential safety hazard; because the LNG double-wall pipe has a large pipeline vibration during gas supply work, and long-term vibration will cause fracture and failure of the welding part of the inner tube and the outer tube in the LNG double-wall tube. [0004] (2) It is not easy to disassemble and repair, and the reutilization rate of spare parts is low. If the double-wall pipe needs to be disassembled during installation or use, the problematic section of the pipe can only be...

AI Technical Summary

Problems solved by technology

[0003] (1) There is a large potential safety hazard; because the LNG double-wall pipe has a large pipeline vibration during gas supply work, and long-term vibration will cause the welding part of the inner and outer pipes in the LNG double-wall pipe to break and fail

[0004] (2) It is not easy to disassemble and repair, and the reuse rate of spare parts is low

If the double-wall pipe needs to be disassembled during installation or use, the problematic section of the pipe can only be cut off and scrapped directly

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