a cylinder body, having an opening, wherein an internal space of the cylinder body is configured to store the gas, the gas forms the internal pressure in the internal space of the cylinder body, and the internal pressure is smaller than an atmospheric pressure and is less than 760 Torr;

a pipeline structure, arranged inside the cylinder body, wherein the pipeline structure is communicated with the opening and comprises a first pipeline and a second pipeline; wherein the second pipeline has an end away from the opening and directly leading to the internal space, and there is a pressure in the second pipeline between the end and the second check valve the same as the internal pressure;

a first check valve, arranged in the first pipeline and having a first check valve opening pressure, wherein the first check valve opening pressure is greater than the atmospheric pressure, and an external filling gas enters the cylinder body via the first pipeline and the first check valve when a pressure of the external filling gas is greater than the first check valve opening pressure and the internal pressure;

a second check valve, arranged in the second pipeline and having a second check valve opening pressure of less than 760 Torr, wherein a sum of the internal pressure and the second check valve opening pressure is less than the atmospheric pressure, and the gas stored in the cylinder body flows out of the cylinder body via the second pipeline and the second check valve when the internal pressure is greater than or equal to the second check valve opening pressure and an external environmental pressure of the cylinder body; and

an adsorbent, arranged in the cylinder body to absorb the gas stored in the cylinder body.