Leak detection device

The invention belongs to the technical field of nuclear magnetic resonance equipment, and discloses a leak detection device which comprises a corrugated neck pipe, an upper cover, a lower cover and a supporting rod. The corrugated neck pipe comprises a corrugated pipe body, an upper flange and a connecting pipe, the upper flange is arranged on the outer side of the end of the corrugated pipe body in a sleeving mode, a first welding groove is formed in the upper flange, and the groove side wall, close to the corrugated pipe body, of the first welding groove can be welded to the end of the corrugated pipe body in a self-melting mode; the connecting pipe is connected and communicated with one end, far away from the upper flange, of the corrugated pipe body; the upper cover abuts against and is connected to the side, away from the corrugated pipe body, of the upper flange. The lower cover blocks the end, away from the corrugated pipe body, of the connecting pipe. The supporting rod is fixedly connected to the low