Visual high-pressure rock core spontaneous imbibition device and application thereof

The invention discloses a visual high-pressure rock core spontaneous imbibition device and application thereof. The visible part of the rock core holder body is arranged by adopting a transparent pressure-resistant barrel and a transparent rubber sleeve; one end of the core holder body is connected with one end of the liquid supplementing container; the other end of the liquid supplementing container is connected with a constant-speed constant-pressure pump for pressurizing the interior of the liquid supplementing container and providing liquid supplementing power; the other end of the core holder body is respectively connected with one end of the annular pressure tracking pump and one end of the pressure regulating system through pipelines; the other end of the pressure regulating system is connected with one end of the gas pressurizing system; the other end of the gas pressurization system is connected with a gas source for providing gas; a buffer container for temporarily storing gas and playing a role in