Gas permeability testing device for solid detection material and testing method thereof

The invention relates to the technical field of gas detection devices, and discloses a gas permeability testing device for a solid detection material in the first aspect. Comprising a constant-temperature box, a permeable gas conveying part used for conveying test gas, a carrier gas conveying part used for conveying carrier gas, a gas content measuring instrument used for detecting the concentration of the test gas and a heat exchanger used for adjusting the gas temperature, and a clamping tool used for clamping a hollow cylinder of a detection material is arranged in the constant-temperature box; the permeable gas conveying part, the carrier gas conveying part and the gas content measuring instrument are all arranged outside the constant-temperature box. In the second aspect, the invention discloses a testing method based on the gas permeability testing device for the solid detection material. According to the gas permeability testing device of the solid detection material and the testing method of the gas p