Wellhead valve high-pressure air-tight seal detection device

The utility model relates to the technical field of air-tight sealing detection devices, in particular to a wellhead valve high-pressure air-tight sealing detection device which comprises a wellhead valve high-pressure air-tight sealing detection device body, an LCD screen is arranged on the surface of the wellhead valve high-pressure air-tight sealing detection device body, and a scraper is connected to the surface of the LCD screen in a sliding mode. A hanging rope is fixed to the bottom end of the scraping piece, a hanging rope rod is arranged under the hanging rope and fixed to the surface of the wellhead valve high-pressure air-tight sealing detection device body, dustproof cloth is fixed to the top end of the scraping piece, the other end of the dustproof cloth is movably connected to the surface of a dustproof cloth rotating shaft, and a quick disassembly and assembly assembly is arranged between the dustproof cloth rotating shaft and the dustproof cloth. One end of the dustproof cloth rotating shaft i