Petroleum pipeline leak detection device

The utility model relates to the technical field of petroleum pipeline leakage detection, in particular to a petroleum pipeline leakage detection device which comprises a lantern ring, a plurality of first groove holes are formed in the lantern ring, the inner wall of each first groove hole is slidably connected with a first connecting rod, and the outer surface of each first connecting rod is sleeved with a first spring. The end, close to the central axis of the lantern ring, of each first connecting rod is fixedly connected with a fixing block, a plurality of rolling wheels are arranged in the lantern ring, and the outer surface of each rolling wheel is rotationally connected with the corresponding fixing block. According to the petroleum pipeline clamping device, a petroleum pipeline is put into a lantern ring, so that a rolling wheel is in close contact with the petroleum pipeline, at the moment, the petroleum pipeline pushes the rolling wheel, and a first spring is compressed under the action of a fixing