Leakage detection device and leakage detection method

Abstract

The invention provides a leakage detection device and a leakage detection method, and is used for performing leakage detection on a heat exchange core. The leakage detection device comprises a gas releaser, a gas sensor and a controller. The gas releaser and the gas sensor are both in communication connection with the controller. The gas releaser is used for providing tracer gas for the first flow channel of the heat exchange core. The gas sensor is used for detecting the tracer gas concentration of the second flow channel of the heat exchange core and feeding back the tracer gas concentration to the controller. The controller is used for comparing the tracer gas concentration detected by the gas sensor with a concentration threshold value, and if the tracer gas concentration is larger than the concentration threshold value, the controller determines that leakage points exist in the heat exchange core. Tracer gas is actively released in the first flow channel through the gas releaser, the concentration of the tracer gas in the second flow channel is automatically monitored through the gas sensor, the leakage detection device can still conduct leakage detection on the heat exchange core in the installation site of the heat exchange core, and leakage detection of the heat exchange core is greatly facilitated.

Description

technical field [0001] The present application relates to the technical field of heat exchange core leakage detection, and in particular to a leakage detection device and a leakage detection method. Background technique [0002] The heat exchange core is the core component of the indirect evaporative cooling system. Hot air and cold air pass through different channels inside the heat exchange core to complete heat exchange. Since the different flow channels are isolated from each other, the hot air and the cold air do not contact during the heat exchange process to obtain high heat exchange efficiency. Before the heat exchange core leaves the factory, it is generally used to detect whether there is water leakage in one flow channel (such as a hot runner that circulates hot air) and observe whether there is water leakage in the other flow channel (such as a cold flow channel that circulates cold air) to detect the heat and cold of the heat exchange core. Whether the runners...

AI Technical Summary

Problems solved by technology

Due to collisions or other reasons that are likely to occur during transportation and installation, the heat exchange core has a leak point

However, after the heat exchange core is installed at the site of use, it is inconvenient to detect water injection

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