Gas test blowout recovery device

The utility model provides a gas test blowout recovery device which comprises a sand setting tank, a gas-liquid separator and a natural gas purifier, a gas inlet pipeline of the sand setting tank is provided with a first control valve, the bottom of the sand setting tank is communicated with an oil discharge pipeline, the oil discharge pipeline is communicated with an inlet of the gas-liquid separator, and the natural gas purifier is communicated with the oil discharge pipeline. The top of the sand setting tank is communicated with a first exhaust pipeline, the first exhaust pipeline is communicated with an inlet of a natural gas purification pipeline, an outlet of the gas-liquid separator is communicated with a second exhaust pipeline, and the second exhaust pipeline is communicated with the first exhaust pipeline; a third exhaust pipeline is arranged at a fuel gas outlet of the natural gas purifier, and blow-off pipelines are arranged at the bottoms of the sand setting tank, the gas-liquid separator and the