دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. a partial restriction, generally a plate, placed to change the direction, guide the flow, or promote mixing within a tank or vessel. 2. a device that is seated on the bit pin, in a tool joint, or in a drill pipe float, to centralize the lower end of a go-devil while permitting the bypass of drilling fluid.

n: A replaceable metal ring inserted in the BHA (q.v.) to act as a landing collar for a survey tool.

n: See baffle plate.

plates in a separator on which the flow impinges and breaks out gas.

n: a device installed on an engine to quiet the barking sound produced by exhaust gases exiting through the exhaust pipe of the engine. One type of mufflers is a steel cylinder with baffle plates. The baffle plates, flat steel sheets welded inside the cylindrical body of the muffler, change the direc- tion of exhaust gas flow. Changing the direction of flow allows the gases to expand gradually, rather than all at once. Gradual expansion is quieter than rapid expansion. Sometimes called an exhaust silencer.