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US 4,413,533 AGranted
Sampling device for isokinetic sampling
AssigneeExxon Research & Engineering Co.
InventorHans A. Diesel
Life of this patent
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AssigneeExxon Research & Engineering Co.
InventorHans A. Diesel
Estimating the term…
A sampling device for isokinetic sampling of a flowable substance passing through a conduit comprises a plurality of relatively narrow tubes (27) of substantially equal length each open at one end and terminating in a metering valve (30) at the other end. The tubes (27) are sealed within an externally smooth sheath (28) and the open ends protrude different distances from the sheath, substantially along a straight line parallel to the axis of the sheath (28). The end portions of the tubes (27) are parallel to each other and perpendicular to the sheath's axis so as to be substantially parallel to the axis of the conduit, when disposed for use. The open ends of the tubes (27) are substantially in a common plane perpendicular to the lengths of the end portions. The other ends of the tubes are connected to the metering valves which are calibratable for isokinetic sampling by means of calibration indicators (31), and the metering valves (30) are each connected to discharge valves (32) which are ganged together so as to be opened and shut simultaneously by the movement of a hinged operating bar (37). When the metering valves (30) are correctly set, movement of the operating bar (37) enables flowable substance to pass isokinetically through respective tubes (27) and discharge valves (32) when the latter are opened to provide a corresponding number of simultaneous isokinetic samples of flowable substance. A sample homogenization device (FIG. 7) provides for mixing of collected samples (usually about 1 liter samples) prior to laboratory analysis.
A sampling device for isokinetic sampling of a flowable substance passing through a conduit comprising a plurality of tubes fixedly located relative to each other, each tube including an inlet end having an inlet opening, a discharge end having a discharge opening, an adjustable metering valve means for regulating the flow rate through each tube and an operating valve for permitting and preventing flow through each tube, the volume contained in each tube between the inlet opening and the valve being substantially equal to the corresponding volume of each of the other tubes, the inlet openings of the tubes being spaced apart substantially in a common plane and facing in the same direction, and the sampling device being so constructed and arranged for a part thereof including said inlet openings to be received in leak-proof fashion through an orifice in the wall of the conduit, operating plate means connected to each said operating valve for opening and closing all said operating valves simultaneously when each said separate metering valve means has been set to substantially equalize the flow rate through each tube, and a plurality of individual containers located adjacent each said tube discharge end to receive a plurality of individual samples therein upon opening of each said operating valve means.
Dependencies are inferred from the claim text.