Automatic gas sample reserving device

The utility model belongs to the technical field of gas monitoring. The utility model provides an automatic gas sample reserving device. The automatic gas sample reserving device comprises an automatic sampling control module and a gas sample reserving device execution module, the automatic sampling control module and the gas sample reserving device execution module are connected in a wireless or wired manner and realize mutual data transmission; the gas sample reserving device execution module comprises a diaphragm pump, an electromagnetic valve and a gas sampling barrel; the diaphragm pump is connected with the gas sampling barrel through a pipeline; the electromagnetic valve is located on the pipeline and controls opening and closing of the pipeline. The gas sampling barrel comprises a stainless steel barrel, a sampling bag and a barrel cover; the sampling bag is positioned in the stainless steel barrel and is communicated with the electromagnetic valve and a reserved sample air inlet pipeline through the