Nuclear power is with pneumatic diaphragm valve structure with anti -seismic performance

The utility model discloses a nuclear power is with pneumatic diaphragm valve structure with anti -seismic performance, including valve body, diaphragm, valve gap, nut and bolt, valve body and valve gap pass through the screw bolt and nut fastening connection, and the flange face rigid connection of valve body and valve gap, the edge of valve gap has the structure of containing groove, and the edge of diaphragm contains completely and is containing the structure inslot. The utility model discloses an improve pneumatic diaphragm valve anti -seismic performance's structure, valve body and valve gap dead contact to compress tightly through the bolt pretightning force, under the earthquake load operating mode, difficultly produce skew displacement, very big reduction valve body and valve cover connection bolt load, can effectively improve the whole anti -seismic performance of valve, provide the maintenance logistics for adapting to homemade and introduction nuclear power three generations technique to earthquake acceleration's requirement.