Sealed environment-friendly boundary area pipeline purging device

The utility model provides a sealed and environment-friendly boundary area pipeline purging device which comprises a collecting pipe, a water cooler and a ground entering tank. A plurality of inlet valves are connected to the side wall of the collecting pipe, the other end of each inlet valve is connected with an outlet of a purging boundary area pipeline through a pipeline, and one end of the collecting pipe is connected with an outlet valve through a pipeline; an inlet of the water cooler is connected with the outlet valve through a pipeline, and a circulating water pipeline is arranged in the water cooler. And an inlet of the ground inlet tank is connected with an outlet of the water cooler through a pipeline. According to the sealed and environment-friendly boundary area pipeline purging device, sealed purging of the boundary area pipeline can be effectively achieved, and environment pollution is avoided; purging media and purging steam can be effectively cooled and recycled, and overtemperature and overp