Single type universal hinge type expanding joint with thickness and crack detecting device

Abstract

The invention relates to a single type universal hinge type expanding joint with a thickness and crack detecting device. An expanding joint body, a detecting device and a control device are included;the expanding joint body comprises a left connection pipe, a corrugated pipe and a right connection pipe which are sequentially connected; the corrugated pipe is provided with the detecting device; the detecting device comprises the thickness and crack detecting device; the control device comprises a signal transmission device, a data processing device and a data terminal; the detecting device iselectrically connected with a power source and the signal transmission device; the signal transmission device is electrically connected with the data processing device in a wired or wireless manner; and the data processing device is electrically connected with the data terminal. According to the single type universal hinge type expanding joint with the thickness and crack detecting device, variousdata of the expanding joint are acquired through the detecting device, are sent to the mobile phone of related personnel after processing, and can be looked over any time, and an alarm is given out during leaking of the expanding joint. The single type universal hinge type expanding joint with the thickness and crack detecting device facilitates optimizing the product design, can accurately predict the maintaining, overhauling and replacing time of the expanding joint, and achieves intelligent detecting and monitoring.

Description

technical field [0001] The invention relates to the technical field of pipeline expansion joints, in particular to a single universal hinge type expansion joint provided with thickness and crack detection devices. Background technique [0002] Pipeline compensators are also called expansion joints. They are installed in sections of heating pipelines or gas pipelines to compensate for expansion and contraction of pipelines, especially for long-distance heating pipelines that transport high-temperature and high-pressure media. The wall thickness of expansion joints is relatively thick. Large, high strength, absorbing more axial displacement of the pipeline. Therefore, the reliability requirements for pipeline expansion joints are relatively high. [0003] At present, most of the commonly used bellows expansion joints work in the internal pressure type. After the medium is passed into the pipeline, the medium will enter the inner cavity of the bellows, that is, the inner wall...

AI Technical Summary

Problems solved by technology

When the pipe is stretched or contracted due to thermal expansion and cold contraction, the bellows will be stretched or compressed, plus the pressure on the inner wall of the bellows. During long-term use, due to the large expansion and contraction of the heating pipe, the The number of waves of the pipe is large, and the bellows of the expansion joint are prone to leakage due to fatigue. Once the internal pressure bellows expansion joint leaks, the entire expansion joint will fail

Therefore, regular maintenance or replacement of pipeline expansion joints is required, resulting in a short service life of the expansion joints, a large workload for maintenance and replacement, and high costs

Sometimes due to failure to detect leaks and failed expansion joints in time, it may even lead to production safety accidents, resulting in serious personal injury and economic losses

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