Anti-corrosion corrugated pipe for natural gas conveying

Abstract

The invention belongs to the technical field of corrugated pipes, and particularly relates to an anti-corrosion corrugated pipe for natural gas conveying. Joints are connected to the positions, located at the two ends of a long pipe, of the outer surface of the long pipe in a sleeving manner. The long pipe comprises an elastic hose. The elastic hose is made of an anti-corrosion material. Evenly-arranged arc blocks are fixedly connected to the outer surface of the elastic hose and are attached to one another to form a round pipe. A first sliding groove is formed in the end face of one side of each arc block. A first sliding block is fixedly connected to the end face of the other side of each arc block, and the first sliding blocks are arranged in the first sliding grooves and are in slidingconnection with the first sliding grooves. The anti-corrosion corrugated pipe is mainly used for solving the problems that in existing corrugated pipes, structures are single, most corrugated pipes adopt single-layer corrugated pipe structures, the defects of poor anti-corrosion performance, poor anti-pressure ability, easy wear and the like exist in the corrugated pipes of this kind, during use,cracks or wear or corrosion is prone to being generated, damage is prone to being caused, and consequently the service life is shortened.

Description

technical field [0001] The invention belongs to the technical field of bellows, in particular to an anti-corrosion bellows for natural gas transportation. Background technique [0002] Bellows refers to a tubular elastic sensitive element connected by foldable corrugated sheets along the direction of folding and stretching. Bellows are widely used in instruments and meters, and their main purpose is as a measuring element of a pressure measuring instrument to convert pressure into displacement or force. The bellows has a thinner wall and higher sensitivity, and the measurement range is tens of Pa to tens of MPa. Its open end is fixed, and the sealed end is in a free state, and the auxiliary coil spring or reed is used to increase the elasticity. When working, under the action of internal pressure, it is elongated along the length of the pipe, so that the movable end produces a displacement that has a certain relationship with the pressure. The movable end drives the point...

AI Technical Summary

Problems solved by technology

[0005] In order to make up for the deficiencies in the prior art, the present invention proposes an anti-corrosion corrugated pipe for natural gas transportation. The present invention is mainly used to solve the problem that the existing corrugated pipe has a single structure, and most of the corrugated pipes adopt a single-layer corrugated pipe structure. , this kind of bellows has many shortcomings such as poor corrosion resistance, poor compressive resistance, and easy wear.

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