A dual-flow external pressure compensator and its implementation method

Abstract

The invention relates to the technical field of pipeline compensators, and discloses a dual-flow external pressure compensator and its implementation method, comprising an outer pipe connection unit and a corrugated pipe connection unit that is movably plugged and installed at one end of the outer pipe connection unit, and connected to the outer pipe The unit is also equipped with an airbag extrusion adjustment assembly and a variable form shroud assembly. After the bellows sleeve absorbs the thermal expansion of the pipe, it can squeeze the rubber airbag of the airbag extrusion adjustment assembly, so that the gas enters the rubber air ring, and the rubber The air ring expands and squeezes the soft deformed end of the variable form shroud assembly, and the soft deformed end contracts inwardly. When the hot air flowing into the outer protective sleeve passes through the contracted soft deformed end, Squeeze, that is, pressurize the gas, so that the temperature is lowered, and the temperature of the hot air flow flowing into the outer protective sleeve from the shrinking soft deformed end is lowered, thereby reducing the damage to the bellows sleeve caused by high temperature and improving the bellows. The age of the set.

Description

technical field [0001] The invention relates to the technical field of pipeline compensators, in particular to a dual-flow external pressure compensator and an implementation method thereof. Background technique [0002] Pipeline compensators, also known as expanders or expansion joints, expansion joints, are mainly used to compensate for thermal expansion and contraction of pipelines caused by temperature changes. If the pipe is not completely free to expand or contract when the temperature changes, thermal stresses will develop in the pipe. This stress must be considered in the pipeline design, otherwise it may cause the rupture of the pipeline and affect the normal production. As an important part of pipeline engineering, compensators play an important role in ensuring the long-term normal operation of pipelines. [0003] When the existing double-flow external pressure compensator is used, the bellows are pre-compressed first, and the bellows absorb the heat of the pipe...

AI Technical Summary

Problems solved by technology

[0003] When the existing double-flow external pressure compensator is used, the bellows are pre-compressed first, and the bellows absorb the heat of the pipeline in the outer tube to expand, but after long-term use, the expansion of the bellows in a high-temperature environment for a long time will cause damage, reducing the service life, the current dual-flow external pressure compensator has no cooling effect, and there is an urgent need for a dual-flow external pressure compensator that can cool the outer tube

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