Boiler workshop of 5# boiler 2# medium voltage reduction is an important pipeline back section conveying steam. Double reduction after steam flow amount in general about 80-110t/h. Safe and steady operation of 2# double reduction relation of whole company steam system produced a smooth and stable process.

Due to the input of a longer service life, and the reduction of regulatory action is frequent, 2# double reduction had leakage of regulating valve. Leak plugging method to early by stuffing scoring sealant, temporarily slow leakage. But as time goes on, the leak sealing surface were worn continuously, 2# double cut again leakage, due to high pressure, wear gap is enlarged, the packing will be injected into the high pressure steam extrusion, unable to realize plugging. Before repair workers seems to have only one solution -- 2# solution column reduction, maintenance. However, this will undoubtedly affect the production and operation, resulting in the production of decrement.

After the power is strong and the smell of boiler workshop repair personnel repeated research, discuss, design several schemes. In order to solve the problem without affecting the production circumstances, after repeated demonstration, the final choice in addition to cover on the stuffing of the periphery of the scheme. This can make the packing will no longer be extrusion, and the realization of plugging. After several hours of fighting, finally succeeded to realize effective plugging in relief situations.

Improved seems a small method, but it has played the huge role. The innovation of the mode of thinking, for the company to other repair work to provide a good reference.