The invention discloses a
dielectric characteristic test cavity for a
liquid state, a gas state and a gas-liquid mixing state of insulation liquid. The
dielectric characteristic test cavity for the
liquid state, the gas state and the gas-liquid mixing state of the insulation liquid comprises a cavity
barrel, a cavity cover arranged at the top of the cavity
barrel and a supporting frame arranged atthe bottom of the cavity
barrel, a high-
voltage electrode, a testing
electrode, a first insulating block, a second insulating block, a third insulating block and a fourth insulating block are arranged inside the cavity barrel; the testing
electrode sleeves the outer part of the high-
voltage electrode, an annular testing cavity is formed between the testing electrode and the high-
voltage electrode, the inner part of the testing cavity is used for containing a to-be-tested medium, a heating source used for heating the medium is arranged inside the high-voltage electrode, the other parts insidethe cavity barrel are filled with the insulating blocks, a gas state testing hole and a
liquid state testing hole communicating with the testing cavity are formed in the side wall of the cavity barrel, and the top and bottom of the cavity barrel are correspondingly connected with a liquid adjusting
pipe and a gas adjusting
pipe; and according to the
dielectric characteristic test cavity for the liquid state, the gas state and the gas-liquid mixing state of the insulation liquid,
miniaturization of size and comprehensiveness of function of the dielectric characteristic test cavity, largest solution-needing amount of a single experiment reduced are realized, and functions of vacuuming, solution adjusting, pressure testing, pressure adjusting, temperature controlling,
temperature testing, andobservation can be realized.