Improved dual-layer metal hose for petrochemical engineering

Abstract

The invention discloses an improved dual-layer metal hose for petrochemical engineering. The improved dual-layer metal hose comprises a metal bellow and a net cover, the net cover fixedly sleeves thesurface of the metal bellow, end rings are fixedly installed at the two ends of the metal bellow and fixedly connected with one end of a jointing pipe, a connecting flange is fixedly installed at theother end of the jointing pipe, and four installing holes are fixedly formed in the surface of the connecting flange. According to the improved dual-layer metal hose for petrochemical engineering, through the arrangement of the dual-layer structures of the metal bellow and the net cover, the net cover can share static loads of the metal hose in the axial direction and the radial direction, and itcan also be guaranteed that the metal hose safely and reliably works on the condition that fluid flows along a pipeline and generates a pulsation effect; meanwhile, the net cover can guarantee that the corrugated part of the hose does not directly suffer from mechanical damage in the aspects of relative friction, impact and the like, and the strength of the metal hose is improved; through the arrangement of a pressure resistance ring, the pressure resistance effect can be well achieved, and the situation that the use of the metal hose is influenced when the metal hose is pressurized and deformed.

Description

technical field [0001] The invention relates to a metal hose, in particular to an improved double-layer metal hose for petrochemical industry, which belongs to the technical field of petrochemical industry. Background technique [0002] Metal hose is an important component in the connection pipeline of modern industrial equipment. Metal hoses are used as wire and cable protection tubes for wires, cables, automated instrument signals, and civil shower hoses. The specifications range from 3mm to 150mm. Metal hoses are widely used in petrochemical and other fields, but the current metal hoses are mostly single-layer The bellows structure is easy to be corroded during use, and has low compressive performance, which reduces the service life; and it has no heat preservation effect. When there is a large temperature gradient inside and outside the metal hose, it will accelerate the fatigue of the material. Contents of the invention [0003] The purpose of the present invention i...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an improved double-layer metal hose for petrochemical industry, so as to solve the problems of being easily corroded and having low pressure resistance during use in the above-mentioned background technology

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