Sampling device for analyzing gas with high dust content
AssigneeNGK Insulators, Ltd.
InventorNaoe Izumi
Life of this patent
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Abstract
The disclosed sampling device has a gas suction tube through which gas with a high content of dust is sucked into the sampling device so as to cleanse the gas with water in the sampling device before analyzing the gas. At least one air nozzle is provided in the gas suction tube in such a manner that the air nozzle faces the inside surface of the gas suction tube wall and is directed toward the inlet opening of the gas suction tube, so that dust and other deposits sedimented on the inside surface of the gas suction tube is cleansed by air jets ejected from the air nozzle.
Claims5
A sampling device for analyzing gas with a high dust content, comprising a generally closed housing (2), a gas suction tube (3) of a large diameter connected to an upper portion of the housing so as to lead the gas with the high dust content into the inside of the housing, an air-jet nozzle (4) disposed in said gas suction tube (3) in the proximity of joint between said tube (3) and said housing (2), said nozzle (4) facing tube wall (6) of said gas suction tube (3) and being directed toward inlet opening (5) thereof, a water supply conduit (7) connected to a top portion of said housing (2) so as to supply water for washing the gas with the high dust content led into the housing (2), a screen (9) disposed at a lower portion of said housing (2), a water sump (11) connected to a bottom portion of said housing (2) through a pipe (10), and a washed-gas passage (12) having one end thereof connected to said pipe (10) and an opposite end thereof communicated with outside of the sampling device.
Dependencies are inferred from the claim text.