Steel-sleeve steel steam insulation pipe elbow and rolling supporting mechanisms at end part and middle part thereof

Abstract

The invention relates to a steel-sleeve steel steam insulation pipe elbow and rolling supporting mechanisms at the end part and the middle part thereof. The rolling supporting mechanism at the end part comprises an upper steel hoop, a lower steel hoop, one upper idler wheel and one lower idler wheel, wherein the lower idler wheel and the inner wall of an outer sleeve steel are contacted in a rolling friction way, and an upper idler wheel vertical plate and a lower idler wheel vertical plate are in a clearance fit with the upper idler wheel and the lower idler wheel. The rolling supporting mechanism at the middle part comprises an upper steel hoop, a lower steel hoop and one lower idler wheel arranged at the right center of the lower steel hoop, wherein the lower idler wheel and the inner wall of an outer sleeve steel are contacted in a rolling friction way, and a lower idler wheel vertical plate is in a clearance fit with the lower idler wheel. The steel-sleeve steel steam insulation pipe elbow comprises an outer sleeve steel pipe, an inner sleeve steel pipe, two rolling supporting mechanisms at the end part, the rolling supporting mechanism at the middle part, insulation material,and erosion resistant coating. Gaps exist between the lower idler wheels and the lower idler wheels of the rolling supporting mechanisms respectively at the end part and the middle part, thereby solving the problem of side displacement of the inner sleeve steel pipe, which is caused by the right angle.

Description

technical field [0001] The invention relates to a heat-insulated steam delivery pipeline, and further relates to a steel-sheathed steel steam insulation pipeline elbow and a rolling support mechanism at its end and middle. Background technique [0002] Steel-sheathed steel steam insulation pipeline is a new technology developed in recent years, which is used to transport high-temperature steam (250-350°C). Its structure basically includes an inner steel pipe and an outer steel pipe, and some insulation materials are filled in the middle. Due to the high steam temperature, the deformation of the inner steel pipe is relatively large, which causes the inner steel pipe to move axially or drift left and right in the outer steel pipe. At the turning, the axial movement of the inner steel pipe and the outer steel pipe will cause the lateral movement of the inner steel pipe. Therefore be badly in need of designing a kind of new steel sheath steel insulation pipe elbow and its end ...

AI Technical Summary

Problems solved by technology

Due to the high steam temperature, the deformation of the inner steel pipe is relatively large, which causes the inner steel pipe to move axially or drift left and right in the outer steel pipe

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