دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: an orifice meter fitting having two chambers. The orifice plate is rolled from one chamber to another;the lower chamber is isolated from the upper chamber so that the gas flow can continue unimpeded while the plate is removed. Compare single-chamber fitting.

n: in a flanged orifice fitting. a threaded hole on each side of the orifice plate into which are screwed lines that connect the fitting with the flow recorder.

n: a device that holds an orifice plate centred in the line in which a fluid is flowing. It consists of two pieces that are joined by placing them together and tightening bolts and nuts. The orifice plate fits between the two pieces. To remove or inspect the orifice plate in a flanged fitting. the line must be bled and the flow of fluid rerouted so that no pressure exists on the fitting.

n pi: small-diameter pipes leading from an orifice fitting to a bellows in a flow recorder. They allow gas pressure to be exerted on the bellows so that the pressure drop across the orifice plate can be recorded.

n: in gas measurement, the orifice plate, orifice fitting, manifold, and flow recorder. Also called a meter run, meter station, orifice meter installation.

n: an opening of a measured diameter that is used for measuring the flow of fluid through a pipe or for delivering a given amount of fluid through a fuel nozzle. In measuring the flow of fluid through a pipe. the orifice must be of smaller diameter than the pipe diameter. It is drilled into an orifice plate held by an orifice fining.

n: the hole that measures the diameter, it express the circulation rate through the tube.

n: a device specifically designed to hold an orifice plate in a meter installation. Several types are available. including the flange, junior, simplex, and senior.

n: a sheet of metal, usually circular, in which a hole of specific size is made for use in an orifice fitting.

n: a part of orifice meter, it is circular metal disc.

part of a orifice metering system. A plate with a hole through which a single phase flow produces a pressure drop.

n: the pressure differential that occurs across an orifice plate.

n: the drop of pressure that the fluid flows through the orifice.

n: on a flanged fining, the threaded holes on either side of the orifice plate. Small pipes are screwed into the taps to connect die fining to a flow recorder. Taps are used so pressure differential on either side of the plate can be measured and recorded. See orifice meter.