Expansion joint structure with displacement equipartition and damping effects

Abstract

The invention relates to the technical field of expansion joints, in particular to an expansion joint structure with displacement equipartition and damping effects. The expansion joint structure comprises two outer side connecting pipes, two corrugated pipes, a middle connecting pipe and a connecting rod structure, the two ends of the middle connecting pipe are respectively connected with one corrugated pipe, and the other ends of the two corrugated pipes are respectively connected with one outer side connecting pipe; the connecting rod structure comprises four short connecting rods, two long connecting rods, a connecting rod frame and two U-shaped hinge plates, the connecting rod frame is fixed to the middle of the middle connecting pipe, the two U-shaped hinge plates are rotatably connected to the two outer side connecting pipes respectively, the middles of the two long connecting rods are rotatably connected with the connecting rod frame through first pin shafts, the ends of the two long connecting rods are rotatably connected with the short connecting rods respectively, and the other ends of the two short connecting rods on the same side are rotatably connected with the U-shaped hinge plates on the same side through pin shafts. The problems of structure flexible connection, displacement distribution and the like are solved, a displacement value can be displayed in real time, and on-site monitoring is facilitated.

Description

technical field [0001] The invention relates to the technical field of expansion joints, and specifically provides an expansion joint structure with equal displacement and damping functions. Background technique [0002] In order to meet the operation requirements of the new type of large-scale petrochemical PDH plant high-temperature pipelines, a large number of expansion joints are used in the pipelines, and the expansion joints generally have the problem of large displacement. Currently, most products use single-type products in series to compensate for displacement. The performance of the product at high temperature, the product adopts the method of internal temperature insulation. However, in the course of daily operation, it is found that in long straight pipelines, single-type products are connected in series, and the adjacent expansion joints are likely to cause uneven displacement distribution, which affects the service life of the product, and coking and cracking o...

AI Technical Summary

Problems solved by technology

However, in the course of daily operation, it is found that the single-type products in long straight pipelines are connected in series, and the adjacent expansion joints are likely to cause uneven displacement distribution, which affects the service life of the product, and coking and cracking of the lining in specific pipelines have a great impact on the expansion joints. Adverse effects on safe operation

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