▎ 摘　　要

NOVELTY - The device has a communication pipe (1) whose right end is screwed with a connecting pipe (2). The communication pipe and an outer surface of the connecting pipe are fixedly connected with two symmetrical fixing seats (3). A sealing shell (4) is fixedly connected between two symmetrical fixing seats. A connecting rod (5) is placed into a right end of the communication pipe. An upper end of a fixing groove is formed into a capillary pipe. A baffle plate is fixedly connected at a central rotating shaft of a fixing block. An outer side of a fixed box is connected with a movable bar. A bushing is fixedly connected with a fixing plate. USE - Color transformation utilizing graphene air tightness detecting device. ADVANTAGE - The device can shake out powdery phenolphthalein in the fixing box through a cooperation of a fixing strip, the fixing box, the movable strip, a leakage plate and the fixing plate, so that air in the pipe is expanded along with high temperature emitted by graphene in the connecting pipe and a communicating pipe and molecular movement in air is accelerated so as to conveniently detect air tightness between the communicating pipe and the connecting pipe by people. DESCRIPTION OF DRAWING(S) - The drawing shows a front view of a color transformation utilizing graphene air tightness detecting device. Communication pipe (1) Connecting pipe (2) Symmetrical fixing seats (3) Sealing shell (4) Connecting rod (5)