Device for detecting flow noise of gas pipeline

The invention discloses a device for detecting flow noise of a gas pipeline, and relates to the technical field of gas pipeline detection. The device comprises a box body of a concave structure, a telescopic sliding detection mechanism is arranged in the box body, the detection mechanism is used for detecting flow noise of the buried gas pipeline, and telescopic supporting mechanisms are arranged on the two sides of the box body. According to the device, through supporting rods on the two sides, it is guaranteed that the situation that a detection result is affected by uneven ground in a long-time detection process is avoided, telescopic rods drive a limiting plate to move in a limiting groove to slidably adjust a sound sensor, and when the sound sensor is not used, the sound sensor is retracted to be protected so as to be prevented from being damaged; and flow noise data collected in real time is provided by means of the sound sensor and a data collector, analysis, processing, feature extraction and recognit