GATE OF RAISED PRESSURE TIGHTNESS AND VIBRATION RESISTANCE WITH INCREASED STOPPING AND RELIEF CIRCULAR RING FOR VESSELS AND UNITS OPERATING UNDER INTERNAL OR EXTERNAL PRESSURE Russian patent published in 2011 - IPC F16J13/00 

FIELD: machine building.

SUBSTANCE: on cover and case gate has flange portions directed into opposite sides. An X-shape packing and flap catches uniformly arranged around circumference are positioned between them. In the structure of the gate there is implemented the relief circular ring isolated from the case of the vessel with a circular elastic padding. Due to its proper rigidity the ring releases the case of the vessel from bending forces directed from the receiving load catches. Central position of master plates increases width of catches; a roller of the master plate is fixed by concept of two-support beam; the master-plates are made out of rods of round and cross section with ends flattened and bent in hot condition. They are fixed with bolts screwed into a flange in a recess of a power ring. Incorrectness of assembly can be adjusted by means of catches fasteners; it facilitates rotation around a fastening bolt at certain angle; if necessary, this bolt can be tightened; for this purpose the padding is taken off, the bolt is unscrewed, a L-shape lug under the padding is moved to the right ensuring access for bolt tightening.

EFFECT: raised reliability.

4 dwg