Flue corrosion prevention compensator

Abstract

The invention discloses a flue corrosion prevention compensator used for a flue gas desulphurization system. The flue corrosion prevention compensator comprises a single-layer soft rubber pipe with a thick wall and a nickel-based alloy steel connecting pipe which are vulcanized. The middle section of the axial cross section of the soft pipe shrinks, and the left and right pipe ends are round straight pipes. The connecting pipe is a round straight pipe of a nested structure, the unilateral axial cross section presents a horizontal rectangular groove, and the width of the opening of the groove is equal to the thickness of two end walls of the soft pipe. During assembling, the left and right pipe ends of the soft pipe are respectively sheathed with a connecting pipe, 2-4 grooves are annularly pressed at intervals from the axial middle section of the outer wall of the connecting pipe to the open groove end, and the staggered grooves form a structure connecting with the soft pipe and the connecting pipe in a compact mode. According to the flue corrosion prevention compensator, the strength of the soft pipe is enhanced by the sheathing of the connecting pipe, and the problem that liquid accumulates in the middle section of the soft pipe during the horizontal installation can be avoided. The connecting pipe is made of nickel-based alloy steel, and the connecting pipe is connected with a flue by welding during the installation, and a formed connector has the advantages of high strength, favorable tightness, and reliable and flexible bearing stress compensation or absorption action.

Description

technical field [0001] The invention relates to a pipeline compensator, in particular to a compensator installed in a flue gas desulfurization system, which belongs to the technical field of pipeline safety devices. Background technique [0002] The flue gas transported by the flue gas desulfurization system has a certain temperature. As the temperature of the flue gas transported changes, the flue will inevitably produce corresponding axial displacement or radial displacement and thrust. For the safe operation of the flue gas desulfurization system in the project, it must be A compensator is arranged in the flue to absorb or compensate for deformation caused by internal stress. The flue compensator in the prior art uses double-layered rubber pipe sleeves as compensation elements, and the two ends of the inner and outer sleeves are respectively fitted with metal joints. When installing, the metal joints at both ends are welded into one body with the flue. This structure Sim...

AI Technical Summary

Problems solved by technology

However, there are still two major problems in the application of the flue compensator in the prior art. First, the layered structure of the rubber sleeve has low strength, and the middle section is concave when installed horizontally. The long-term accumulation of fluid in the concave part accelerates the aging of the rubber; secondly. The connection strength between the rubber pipe socket end and the metal pipe socket is not high, and the joint is prone to failure

Due to the objective existence of the above two major problems, the flue compensator that constitutes the prior art has a short service life in the project, and this practical problem greatly increases the supporting cost of the user

Images