Sample fluid stream probe

摘要

A sample fluid stream in a probe apparatus may be redirected in a redirection area, and a flowing gas sheet may be directed into the redirection area. Additionally, a conduit downstream of a probe nozzle may define a reverse taper (where the conduit is wider downstream), a lip for collecting droplets that have collected on conduit walls, and/or re-entraining gas directed at collected droplets. Focusing gas may focus the sample fluid stream away from the walls of the conduit. Such focusing gas may be at different temperatures for different sections of the conduit. For example, the focusing gas may be a lower temperature near the probe inlet, and may be at a higher temperature to act as drying gas farther downstream.

主权项

1. A method comprising:
receiving a sample fluid stream from a main fluid stream through a nozzle of a probe apparatus located at least partially in the main fluid stream, the sample fluid stream traveling into the nozzle in a first fluid stream direction; redirecting the sample fluid stream from the first fluid stream direction to a second fluid stream direction in a redirection area; and directing a flowing gas sheet into the sample fluid stream in the redirection area, the gas sheet traveling in a sheet direction that is different from the first direction; and focusing the sample fluid stream by directing focusing gas at the sample fluid stream from multiple different sides of the sample fluid stream.