Flue sealing device

The utility model discloses a flue sealing device belongs to equipment inspection technical field. The utility model provides a flue sealing device includes closing plate, nut and sealed post, and theclosing plate is fixed to be covered on the floss hole, and nut fixed joint is provided with the test hole on the closing plate on the terminal surface of floss hole is kept away from to the closingplate, the screw hole and the test hole intercommunication of nut, and sealed post is sealed with the test hole with nut and threaded connection. The utility model discloses a set up the closing platein floss hole department and be favorable to sealed floss hole, prevent that the flue gas from leaking, through setting up the nut on the terminal surface of keeping away from the floss hole at the closing plate and can avoiding when the test components of smoke content multiple open and close the closing plate with nut and threaded connection's sealed post, reduced owing to open and close the closing plate damage that lea