Double-layer corrugated pipe supporting device

Abstract

The invention relates to the technical field of corrugated pipe fittings, in particular to a double-layer corrugated pipe supporting device which is characterized in that an inner-layer steel ring and an outer-layer steel ring are both C-shaped steel rings with openings, the openings of the inner-layer steel ring and the outer-layer steel ring are arranged in a back-to-back mode, and the two ends of a first supporting structure are connected with the inner-layer steel ring and the outer-layer steel ring correspondingly; the inner-layer steel ring and the outer-layer steel ring are coaxially positioned through a first supporting structure, hoop steel sheets are installed on the inner ring face of the inner-layer steel ring and the outer ring face of the outer-layer steel ring correspondingly, a supporting device is mounted between an inner-layer pipe and an outer-layer pipe of a double-layer corrugated pipe, and through matching of the inner-layer steel ring and the outer-layer steel ring, the inner steel ring fastens the inner-layer pipe from the outer side, and the outer steel ring supports the outer-layer pipe from the inner side. The inner-layer pipe and the outer-layer pipe can be coaxially supported when the supporting device is installed in the middle of the double-layer corrugated pipe, and supporting device can be matched with a double-layer sleeve to complete butt joint of the ends of the corrugated pipe when the supporting device is mounted at the end part of the double-layer corrugated pipe.

Description

technical field [0001] The invention relates to the technical field of bellows fittings, in particular to a double-layer bellows supporting device. Background technique [0002] At present, welded bellows, as a key component, are widely used in high-end industries such as semiconductor equipment, vacuum equipment, pharmaceutical equipment, nuclear industry facilities, aerospace, photovoltaic industry, and accelerators. In addition to being used as a measuring element, it can also be used as a vacuum seal, vacuum connection, axial compensation, isolation element, etc. Its tensile rate can reach 30%, compression rate is 70%, and its materials are mainly 316, 316L, etc.; its own characteristics are: its service life ranges from hundreds of thousands of times to as many as millions of times; It is corrosion-resistant and can be used in harsh environments. It has been widely used in many fields and has a very broad prospect. [0003] In the prior art, when the double-layer corr...

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Problems solved by technology

[0003] In the prior art, when the double-layer corrugated pipes are docked, due to the lack of suitable support structure between the double-layer corrugated pipes, it is difficult to realize the butt joint of the double-layer corrugated pipes

In addition, because the bellows itself has a certain degree of elasticity, in the case of a large span, the middle part of the bellows is deformed due to its own weight, and the inner wall of the bellows and the outer wall of the bellows are attached, making it difficult to maintain coaxiality.

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