Equipment and method for measuring diffusion velocity of transformer fault characteristic gas

The invention discloses equipment and a method for measuring the diffusion velocity of transformer fault characteristic gas. The equipment comprises a test container, a heating temperature control system, a vacuum degassing dehydration system, a gas injection sealing system and a cylinder, the test container is externally connected with a cylinder; the vacuum degassing and dewatering system is connected with the test container; the device is used for degassing and dehydrating transformer oil. The heating temperature control system is connected with the test container; the gas injection end ofthe test container is externally connected with the gas injection sealing system; the cylinder is communicated with the test container through a circulating pipeline; air cylinder is divided into upper chamber and lower chamber, upper chamber is an air chamber, lower chamber is an oil chamber, the oil chambers are communicated through a circulating pipeline test container; to-be-tested transformeroil subjected to vacuum d