Patent
Removing device for dynamic pressure
TLDR
In this paper, a dynamic pressure removing device is formed by a duct having a static pressure measuring port 13 in the central part and a plurality of dynamic pressure attenuating bodies arranged in zigzag on both sides of the port.Abstract:
PURPOSE:To enable the measurement of a change in static pressure in a sure and stable manner, by arranging dynamic pressure attenuating bodies in zigzag in a duct so as to suppress the generation of dynamic pressure due to the wind or the like and to enable the measurement of the change in the static pressure alone CONSTITUTION:A dynamic pressure removing device 1 is formed by a duct 11 having a static pressure measuring port 13 in the central part and a plurality of dynamic pressure attenuating bodies 12 arranged in zigzag on both sides of the port The dynamic pressure removing device 1 thus formed is installed on the outside OB of a building and communicated with the inside IB of the building by a pressure conduction piping 2A It is further connected to the high pressure side H of a differential pressure detector 4 via a main detection valve 3, while a pressure conduction piping 2B is connected to the low pressure side L of the detector When a strong wind blows, an air current changes sharply However, the wind 6A and 6B entering the dynamic pressure removing device 1 is attenuated by the dynamic pressure attenuating bodies 12, and thus only a change in pressure at static pressure is applied on the differential pressure detector 4 By this constitution, the measurement of the static pressure can be performed in a stable and accurate mannerread more
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