Online leakage detection corrugated pipe compensator applied to high-temperature occasions and leakage detection method

Abstract

The invention belongs to the technical field of intelligent industrial pipelines, and particularly relates to an online leakage detection corrugated pipe compensator applied to high-temperature occasions and a leakage detection method. The compensator comprises a corrugated pipe, a length-variable external thermal insulation structure, at least two temperature sensors, a data processing device anda terminal display device, wherein the corrugated pipe is connected to a detection pipeline, the external thermal insulation structure is arranged on the outer side of the corrugated pipe, the detection pipeline, the outer wall of the corrugated pipe and the external thermal insulation structure form a circumferential thermal insulation cavity, a probe of the at least one temperature sensor extends into the thermal insulation cavity, a probe of the at least one temperature sensor extends into the detection pipeline, the temperature sensors are connected with data processing device, and the data processing device is connected with the terminal display device. According to the online leakage detection corrugated pipe compensator, whether the corrugated pipe compensator leaks or not is monitored in real time from a system pressure test to a long-term working state after a pipe network is installed, safe operation can be continued after leakage is reported on line, and sufficient decisionand maintenance time is provided for a pipe network manager.

Description

technical field [0001] The invention belongs to the technical field of intelligent industrial pipelines, and in particular relates to an online leak detection bellows compensator and a leak detection method applied to high temperature occasions. Background technique [0002] As a common flexible element in pipeline design, the bellows compensator mainly compensates for the displacement of the pipeline due to temperature changes. In the case of high-temperature medium, the temperature difference is large, and the thermal expansion and contraction of the pipeline is obvious. The bellows compensator plays a crucial role, so it is widely used, such as the hot blast furnace pipeline of the steel plant (the medium temperature is about 1300 ℃) or the regeneration of the petrochemical industry. Inclined pipe and flue gas energy recovery system (medium temperature around 700°C) and other fields. In high-temperature occasions, once the working medium in the pipe leaks, it may cause e...

AI Technical Summary

Problems solved by technology

There are often a large number of bellows compensators on the high-temperature pipelines of complex systems, and the equipment does not stop. The uninterrupted inspection of the bellows compensators on the complex high-temperature pipelines can neither find the bellows compensators in the leaking place in time, but also improve The labor intensity of operation and maintenance personnel increases safety hazards and needs to be resolved

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