Energy conservation high-pressure-resistant nonmetal expansion joint

Abstract

The invention discloses an energy conservation high-pressure-resistant nonmetal expansion joint which comprises a right flange, a left flange, skin and a guide cylinder. The two ends of the skin are turned outwards and are fixedly connected with the left end face of the right flange and the right end face of the left flange correspondingly, and a compensation structure is formed; the guide cylinder is arranged in a skin inner hole and comprises a straight cylinder and an outwards-turning flange at the left end, the left end outwards-turning flange of the guide cylinder is clamped between the right end face of the left flange and the left end turning edge of the skin, the straight cylinder penetrates the skin in the axial direction, the right end extends out of the right end face of the right flange, and the extending length is not smaller than the compensation amount; and the further improvement is that a plurality of ribbed plates are fixedly connected between the outer wall of the straight cylinder of the guide cylinder and the right end face of the outwards-turning flange and are evenly arranged on the outer side of the straight cylinder of the guide cylinder, a heat-resisting layer is arranged on the outer wall of the straight cylinder of the guide cylinder, and a steel wire net is arranged on the inner wall of the skin. The energy conservation high-pressure-resistant nonmetal expansion joint is high-temperature resistant and high-pressure resistant, impurities and dust are prevented from falling into a cavity between the guide cylinder and the skin in the using process, the heat loss is small, and the energy-saving effect is obvious.

Description

technical field [0001] The invention relates to a pipeline compensation device, in particular to a non-metallic expansion joint. Background technique [0002] Non-metallic expansion joints are widely used in high-temperature flue gas discharge pipes such as thermal power plants, steel plants, and smelters. Non-metallic expansion joints are equipped with skins between the flanges at both ends to achieve soft connections. The skins are equipped with guide tubes . The main defect of the existing non-metallic expansion joints is that: the guide tube is welded in the inner hole of the connecting pipe or the flange, which is easy to cause welding deformation; on the other hand, because the guide tube cannot axially cover the entire skin, acrobatics 1. Dust is easy to fall into the cavity between the guide tube and the skin, and long-term accumulation will seriously affect the life of the skin and affect the compensation function of the soft connection. Contents of the invention...

AI Technical Summary

Problems solved by technology

The main defect of the existing non-metallic expansion joints is that: the guide tube is welded in the inner hole of the pipe or the flange, which is easy to cause welding deformation; on the other hand, because the guide tube cannot axially cover the entire skin, the acrobatic 1. Dust is easy to fall into the cavity between the guide tube and the skin, and long-term accumulation will seriously affect the life of the skin and affect the compensation function of the soft connection

Images