MULTIWAY CHANGE-OVER SHUTOFF DEVICE Russian patent published in 2000 - IPC

FIELD: oil industry; valves. SUBSTANCE: device is designed to change direction of oil flow from pipelines transferring oil from oil wells to device measuring well yield. Device has ring-shaped housing with radially arranged inlet holes closed by covers from ends. Housing accommodates shutoff member with outer spherical surface and outlet channel. Shutoff member is operated by shaft installed coaxially in upper cover channel. Outlet channel communicates with outlet branch pipe. Shutoff member is made in form of truncated ball with number of inlet channel less by one than number of housing inlet holes. Seals fitted in inlet holes of housing are spring-loaded relative to flanges connected to housing and engage with outer surface of shutoff member. Lower part of shutoff member is locked by pivot installed coaxially with controlled shaft in cellular partition of lower cover. Inner space of shaft is connected from one side with outlet channel of shutoff member, and from other side, with outlet branch pipe space by means of radial holes. EFFECT: improved repairability and reliability of device. 2 cl, 2 dwg