Coated layer structure of corrugated hose for fuel gas and mounting method of coated layer structure

Abstract

The invention relates to a metal hose coated sleeve mounting structure and a mounting method thereof.The structure comprises a metal hose and a coated sleeve, the metal hose is sleeved with the coated sleeve, the coated sleeve is fixed to metal joints at the two ends of the metal hose, the metal joints at the two ends are each provided with an annular groove in the circumferential direction, and the two ends of the coated sleeve form outwards-turned curled parts; the outwards-turned curled parts are wound to be annular and matched with annular grooves of the corresponding metal connectors at the two ends of the metal hose respectively, the metal connectors are sleeved with clamping rings respectively to clamp the outwards-turned curled parts in the annular grooves, and the clamping rings are pressed by radial external force to be limited in the annular grooves and press the outwards-turned curled parts. And the two ends of the coated sleeve are fixed with the corresponding metal joints. According to the structure, the end portion of the coated sleeve is curled to form the annular outwards-turned curled portion, then the annular outwards-turned curled portion is pressed and limited through the clamping ring, connection is convenient and firm, even if the clamping ring is slightly loosened, due to the fact that the outwards-turned curled portion has curled tension, the clamping ring is not prone to loosening, and connection reliability is guaranteed.

Description

technical field [0001] The invention relates to the field of pipe fittings, in particular to a coating layer structure of a corrugated hose for gas and an installation method thereof. Background technique [0002] Metal hose is a commonly used pipe fitting, which is widely used. For example, it is also widely used in the field of gas pipe fittings. Common ones, such as corrugated metal hose, are usually used for gas transmission. The corrugated metal hose mainly includes metal joints, corrugated pipes, and covered sleeves, that is, the two ends of the corrugated pipe are connected to the metal joints, and a covering sleeve is sleeved outside the corrugated pipe. to effective protection. In the prior art, the covering sleeve is usually a mesh sleeve structure, and the connection between its two ends and the metal joint is usually by welding or clamping ring, such as the authorization announcement CN204611125U published in the Chinese patent literature, the authorization anno...

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