Integral loop metal flexible pipe and assembling method thereof

Abstract

The invention is a one-piece type loop metal hose and the assembling method which relate to a metal hose, wherein the hose includes a corrugated pipe, a straight tube, a wire netting case, the straight tube connected with the corrugated pipe is one-piece, the design point is that the straight tube, the wire netting case, the metal grid are one-piece to pass through the loop joint, and exposed on the side of the loop joint in the single flanging. The assembling method is that two sides of the single flanging or the two-side flanging are connected with the corresponding matched loop joint. The invention solves the technical problems of the hose joint connection, and the assembling method is feasible, which has strong applicability, long service life, fast assemble. The invention has the characteristic of high efficiency, low cost, suitable for mass production, which is the ideal matching piece connected between the installed device and the part.

Description

technical field [0001] The invention relates to a metal hose. Background technique [0002] At present, metal hose is one of the main parts for equipment installation and connection between components. It has the characteristics of good flexibility, high temperature resistance, corrosion resistance and high pressure bearing. Therefore, it is widely used in aerospace, machinery manufacturing, petrochemical, electric power, metallurgy, construction, etc. Metal hoses are generally composed of stainless steel bellows, mesh sleeves, retaining rings, connecting pipes, welding rings, joints and other parts. The joints include threaded joints and flange joints, which are fixed and loose. The existing metal hose production process generally adopts the integral welding of corrugated pipe, network pipe and retaining ring, and then welds with the connecting pipe or joint. Another connection method is to weld the two ends of the bellows to the connecting pipe first, then put the mesh c...

AI Technical Summary

Problems solved by technology

[0003] The production methods of the above-mentioned metal hoses can only be realized by multi-pass welding. Due to the large amount of heat generated by welding, coupled with the differences in wall thickness and material of each part, the shape of the welding part changes and the concentration of thermal stress results in the structure of the metal material. produce changes that reduce the mechanical strength of the product

Therefore, the existing metal hose has short service life, complicated welding process, low production efficiency and high cost, and is not suitable for mass production

[0004] The patent number ZL 200520102168.X disclosed in the Chinese patent literature, the date of authorization announcement was July 5, 2006, and the name of the utility model is "metal hose with net cover". Although this patent proposes a new solution to the known similar products , but there are still some deficiencies in the design of this scheme, especially the connection of the hose joint is not ideal

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