SUPERCRITICAL HIGH-TEMPERATURE HIGH-PRESSURE DOUBLE-FLANGED BUTTERFLY SEALING RING CLAMPED CHECK VALVE

摘要

A supercritical high-temperature high-pressure double-flanged butterfly sealing ring clamped check valve, comprising a valve body (9), valve flanges (8), a spring (7), a positioning pin (6), a pin shaft (5), a fixing base (4), a fixing block (3), a limiting block (2), and a screw bolt (1), the valve flanges (8) being arranged in the middle of the valve body (9), the two half pairs of valve flanges being rotatably mounted in the valve body (9) by means of the pin shaft (5), the limiting block (2) being mounted in the middle of the outlet side of the valve body (9) by means of the positioning pin (6), the spring being mounted in the middle of the pin shaft (5), the two ends of the pin shaft (5) being mounted in the fixing base (4) and being secured by means of the screw bolt (1), a baffle (10) being respectively designed at the rear side of the two half pairs of valve flanges, one end of the spring (7) being supported on the right side of the upper baffle, a sealing ring groove (11) being designed on the sealing surfaces at the front and rear ends of the valve body (9), a plurality of screw bolt holes (12) being designed around the perimeter of the valve body (9); the half pairs of valve flanges are mounted on the pin shaft (5) by means of the fixing blocks (3) on the rear side of said valve flanges. The present check valve has improved erosion resistance and abrasion resistance, and has a long service life.