Leakage detection and water sealing device and method for boiler drain recovery condenser valve

The invention relates to a leakage detection and water seal device and method for a boiler drain recovery condenser valve, the device is installed on a drain pipeline behind a drain recovery condenser stop valve, and the device comprises a water injection pipeline which is connected to the drain pipeline behind the drain recovery condenser stop valve in a bypass mode. And the water injection pipeline is provided with a leakage detection pressure gauge and a leakage detection isolation door and is connected with a vacuum pump water replenishing port. And one end of the drainage pipeline behind the drain recovery condenser stop valve is connected with a drain recovery condenser pipeline, and the other end of the drainage pipeline behind the drain recovery condenser stop valve is of an open structure. Compared with the prior art, the device has the advantages of being reliable, stable, convenient to overhaul, small in influence on a system, good in sealing performance, convenient to check and the like. 本发明涉及一种用于