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Bending-resistant metal hose with connector protection device

A protection device and metal hose technology, which is applied in the direction of hose connection devices, pipes/pipe joints/fittings, hoses, etc., can solve the problems of large local stress of hoses, tearing of net sleeves, damage to metal hoses, etc. Achieve the effect of eliminating potential safety hazards, avoiding excessive local stress, and prolonging service life

Pending Publication Date: 2021-06-29
JIANGSU HENGFENG BELLOWS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the use of the metal hose, sometimes due to the limited conditions of the use site or unreasonable installation, the joint of the metal hose will bend along the root, which will cause excessive local stress on the hose, which is undoubtedly extremely serious. Potential safety hazards, and even serious damage to the metal hose, causing tearing of the mesh sleeve or rupture and leakage of the bellows, resulting in production safety accidents

Method used

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  • Bending-resistant metal hose with connector protection device
  • Bending-resistant metal hose with connector protection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The joint protection device in this embodiment is mainly a flexible ring embedded in the trough of the bellows 5, the flexible ring is a rubber ring 4, and the flexible rubber ring 4 is nested in the trough of the bellows 5 near the end of the short connection pipe 2, nested The number of troughs with rubber rings is usually 3 to 6. The mesh sleeve 6 on the outer surface of the bellows 5 is a metal braided mesh sleeve, and the two ends of the metal mesh sleeve 6 are welded and fixed to the short connection pipe 2 and the long connection pipe 7 through the metal sheath 3 respectively.

Embodiment 2

[0024] The joint protection device of this embodiment is mainly a spring (not shown in the drawings) wound on the outer surface of the mesh sleeve 6. The mesh sleeve 6 on the outer surface of the bellows 5 is a metal braided mesh sleeve, and the two ends of the metal mesh sleeve 6 The short connection pipe 2 and the long connection pipe 7 are welded and fixed through the metal sheath 3 respectively. The spring is wound on the net sleeve 6 close to the fixed flange 1, the metal sheath 3 is welded and fixed with one end of the spring, and the other end of the spring is a free end, and the length of the spring is greater than that between two adjacent bellows crests the distance.

Embodiment 3

[0026] The joint protection device of this embodiment is mainly a flexible sheath wrapped on the outer surface of the mesh sleeve 6 (not shown in the drawings), the mesh sleeve 6 on the outer surface of the bellows 5 is a metal braided mesh sleeve, The ends are welded and fixed to the short connection pipe 2 and the long connection pipe 7 through the metal sheath 3 respectively. The outer surface of the net sleeve 6 close to the short connection pipe 2 is wrapped with a flexible sheath, the flexible sheath includes a non-metallic hose, one end of the flexible sheath is connected and fixed to the outer surface of the short connection pipe 2 through a metal hoop, and the other end of the flexible sheath For free ends, the length of the flexible sheath is greater than the distance between two adjacent corrugated pipe crests.

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Abstract

The invention relates to a bending-resistant metal hose with a connector protection device. The bending-resistant metal hose comprises a corrugated pipe, a net sleeve and connectors, wherein the net sleeve wraps the outer surface of the corrugated pipe, the connectors are arranged at the two ends of the corrugated pipe, each connector comprises a fixed flange and a loose flange, one end of the corrugated pipe is welded to the fixed flange through a short connecting pipe, and the other end of the corrugated pipe is connected with a welding ring through a long connecting pipe; and the bending-resistant flexible connector protection device is arranged at an end of the corrugated pipe, and the protection device comprises a flexible ring embedded in the wave trough of the corrugated pipe, a spring wound on the outer surface of the net sleeve, and a flexible sheath wrapping the outer surface of the net sleeve. According to the bending-resistant metal hose, the protection device is arranged at the connector of the metal hose, so that the circumstance that the hose is bent along the root is avoided, the stress condition of the root of the hose is dispersed, the local stress is prevented from being too large, and the metal hose is effectively protected; and meanwhile, the corrugated pipe has the bending resistance, the service life of the metal hose is prolonged, and potential safety hazards possibly occurring in the using process are eliminated.

Description

technical field [0001] The invention relates to the technical field of metal hoses, in particular to a flexure-resistant metal hose provided with a joint protection device. Background technique [0002] Metal hose is an important component of the connecting pipeline of modern industrial equipment. It not only has the same flexibility as the rubber hose, but also has the properties of high temperature resistance, low temperature resistance, aging resistance and corrosion resistance. The metal hose is generally composed of three parts: bellows, net sleeve and joint. The bellows is the body of the metal hose and plays a flexible role; the net sleeve plays the role of reinforcement and shielding; the joint plays the role of connection. Bellows rely on the elastic deformation of the corrugated side walls to maintain a certain compressibility or stretchability while ensuring a reliable seal. At present, the outer surface of the bellows is also covered with materials such as rubbe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L33/26F16L33/28F16L35/00F16L11/15F16L11/02
CPCF16L33/26F16L33/28F16L35/00F16L35/005F16L11/15F16L11/02
Inventor 吉慧萍
Owner JIANGSU HENGFENG BELLOWS
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