Airtight combustion device for gas well blowout

The utility model relates to the oil gas well equipment, in particular to an airtight combustion device for a gas well blowout. The airtight combustion device for the gas well blowout is used for burning test gas. The airtight combustion device for the gas well blowout comprises an airtight combustion system, an external facility and an assistant facility which are matched with the airtight combustion system. The airtight combustion system comprises a pressure-relieving device, a three-phase separator, a buffer and a vertical-type burning furnace, wherein the pressure-relieving device, the three-phase separator, the buffer and the vertical-type burning furnace are sequentially arranged in the output direction of the test gas. An internal wall of the vertical-type burning furnace is composed of heat-resisting deadening materials and a tube nest is arranged in the vertical-type burning furnace. The external facility comprises an air blower communicated with the vertical-type burning furnace and an ignition controlling box. The assistant facility comprises a hot water circulation system and an ammonium hydroxide configuration system. The hot water circulation system is arranged between the vertical-type burning furnace and the pressure-relieving device. The ammonium hydroxide configuration system is connected with the vertical-type burning furnace. The airtight combustion device for the gas well blowout carries out the burning of the test gas in the airtight device, noise generated during the burning is absorbed by the vertical-type burning furnace, the vertical-type burning furnace is capable of absorbing a large amount of heat source through air blower cooling; the heat exchange is achieved through the hot water circulation system, and the exhaust gas can be washed through the ammonium hydroxide configuration system.