20090320947 | Multi-way valve with fan-shaped flow channel sealing pair - The present utility model relates to an oil and gas collection and transmission system for petroleum, chemical industry and so on. A multi-way valve with fan-shaped flow channel sealing pair measures in turn the production of an individual well to obtain the dynamic production data of an oil well. The multi-way valve with fan-shaped flow channel sealing pair is characterized in that: a floating gating ring that is applied with contact specific pressure by an elastic component and an upper porous plane body form a gating plane sealing pair; a plurality of fan-shaped flow channel oil inlet holes are annularly and uniformly distributed on a mating surface of the upper porous plane body; the floating gating ring is configured such that it changes gradually from the upper fan-shaped flow channel to the lower round-shaped flow channel; and the inner part of the middle rotary spool is used as a public flow-guide passage. In order to realize the rotary gating for measurement, the inner public flow-guide metering passage of the middle rotary spool is in communication with a certain fan-shaped flow channel oil inlet hole located in the mating surface of the upper porous plane body when the middle rotary spool is rotated by electrical power or manual power to a certain angle. The floating gating ring is pre-exerted by an elastic force to make the sealing face self-sealed under a contact specific pressure. The present utility model has a compact structure. The flow channels are formed by casting. The sands carried in the fluid can not enter into the sealing face easily when the fluid flows down from the top to the bottom. The precise processing can be executed in the planar mechanism easily, thereby enabling a lower machining cost, reliable sealing and a longer working life. | 12-31-2009 |