Auxiliary gas injection device for oil chromatography test

The invention discloses an auxiliary gas injection device for an oil chromatography test. The device comprises a nitrogen pipeline, a valve port, a box body and a fixing frame, wherein the valve portis embedded on a side wall of the nitrogen pipeline and is communicated with the nitrogen pipeline, the box body is arranged on one side of the valve port, a gas injection port is formed at a side wall of the box body, the fixing frame is arranged on one side of the box body, and a rotating frame is arranged in the box body. The device is advantaged in that a sealed glass injector which draws a certain amount of insulating oil is placed in the placing rack in the box body, an air injection hole is formed on a side wall of the box body, the fixing frame is arranged on one side of the box body,an automatic gas injection mechanism is arranged on the fixing frame, the automatic gas injection mechanism can automatically extract nitrogen from a connecting valve port in the nitrogen pipeline andinject the nitrogen into g