Exhaust gas condensate closed sampling device

The utility model relates to the technical field of sampling devices, in particular to a closed sampling device for waste gas condensate. Comprising a condensate tank and a delivery pump, the condensate tank is provided with a liquid outlet pipe and a liquid inlet pipe, the liquid outlet pipe is connected with an inlet of the delivery pump, the liquid inlet pipe is connected with an outlet of the delivery pump, the sampling bottle is provided with a bottle inlet valve and a bottle outlet valve, the bottle inlet valve is connected with the outlet of the delivery pump through a sampling inlet pipe, and the bottle outlet valve is connected with the inlet of the delivery pump through a circulating outlet pipe; the device further comprises a striding pipe connected with the sampling bottle in parallel, the two ends of the striding pipe are connected with the liquid inlet end of the bottle inlet valve and the liquid outlet end of the bottle outlet valve respectively, the end, connected with the bottle inlet valve,