MULTI-POSITION SWITCH FOR FLUID Russian patent published in 2005 - IPC

FIELD: oil industry.

SUBSTANCE: switch is made of plug cock having cylindrical plug mounted inside the hollow housing. The housing is made of cylinder with face lids. The shank of the plug for its rotation passes through one of the lids along the axis of the housing. The housing is provided with radial branch pipes arranged in a single plane. The cylindrical plug is mounted to define two spaces on both sides of the plug. The lids are provided with branch pipes which are shifted from the axis of the housing and used for connecting both of the of the cylindrical plug spaces with the external devices for distributing fluid. The cylindrical plug is provided with grooves-recesses the number of which is equal to the number of branch pipes and which extend up to one of the faces of the cylindrical plug to provide desirable communication of the radial branch pipes with the corresponding space of the housing. The cylindrical plug is protected against movement inside the housing, excluding rotation, with thrust radial bearings made of two sliding pairs. The bearings are arranged on both sides of the cylindrical plug. One of the members of the pair is placed on the corresponding face of the cylindrical plug. The other member is set in the corresponding lid of the housing.

EFFECT: improved structure and enhanced reliability.

2 cl, 2 dwg