| abstract |
A rock core fidelity cabin, comprising an inner core taking cylinder (8) and an outer core taking cylinder (6), the outer core taking cylinder (6) is sleeved on the inner core taking cylinder (8), an upper end of the inner core taking cylinder (8) is sealed, the inner core taking cylinder (8) is provided with a piston (7), the piston (7) radially separates the inner core taking cylinder (8), the upper end of the inner core taking cylinder (8) is connected with one end of a pipeline, the other end of the pipeline is connected with a liquid nitrogen storage tank (25), a valve (26) is disposed on the pipeline, the liquid nitrogen storage tank (25) is located in the outer core taking cylinder (6), and the outer core taking cylinder (6) is provided with a flap valve (3). The pressure in the rock core fidelity cabin can be adjusted such that the rock core (1) is maintained at a state in the in-situ environment. |