Marine fuel gas conveying double-wall pipe

Abstract

The invention discloses a marine fuel gas conveying double-wall pipe. The marine fuel gas conveying double-wall pipe comprises an inner pipe and an outer pipe which are coaxially arranged in a complete set mode, wherein supporting assemblies are arranged between the inner pipe and the outer pipe in the length direction of the double-wall pipe at intervals, each supporting assembly comprises at least three supporting structural parts, the at least three supporting structural parts are evenly distributed in the annular direction of the inner pipe so that even supporting can be formed between the inner pipe and the outer pipe, and each supporting structural part is composed of a hard guide pipe and an inner supporting part. The guide pipes are perpendicularly and fixedly connected with the inner pipe so that the structural stability of the inner pipe can be guaranteed, and the inner supporting parts are elastically connected with the outer pipe, so that the inner pipe has a certain buffering capability while ensuring that the inner pipe has enough stability. The double-wall pipe is simple in structure, convenient to manufacture and higher in structural stability, and the manufacturing and mounting cost can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of pipe fittings, in particular to a double-wall pipe for marine gas transmission. Background technique [0002] With the increasing pressure on environmental protection and the increasing requirements for emission reduction in international emission policies, the trend of ships using clean energy to meet the latest environmental protection requirements is becoming more and more obvious. At present, the use of such as LNG (methane), ethane, propane and other combustible gases as clean fuels on ships is gradually increasing. For ships using combustible gas as fuel, the gas pipeline in the engine room shall adopt the form of double wall pipe according to the requirements of the regulations. [0003] The double-wall pipe is a special pipe fitting that uses the inner pipe to transport gas and ventilates between the inner pipe and the outer pipe. At present, in the design of some existing double-walled pipes, d...

AI Technical Summary

Problems solved by technology

At present, in the design of some existing double-walled pipes, due to the complex design of the supporting structure between the inner pipe and the outer pipe, the manufacturing process of the supporting structure itself is complicated and difficult to produce, which increases the difficulty of manufacturing and installation; At the same time, it also makes the diameter of the outer pipe larger, so that the double-wall pipe consumes more materials as a whole, which increases the material cost and the overall weight of the double-wall pipe

In addition, the buffer capacity of the existing support structure is insufficient, which is not conducive to improving the safety of double-wall pipes for long-term use

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