Flow rate measurement apparatus
First Claim
1. An apparatus for measuring fluid flow of a fluid containing solid particles, comprising:
- a fluid flow measurement unit disposed extending parallel to a radial cross sectional section of a main duct,a plurality of pressure measurement ports provided on said fluid flow measurement unit to face an upstream direction at the centers of a number of annular areas equally dividing the area of said radial cross section of the main duct,hydrostatic pressure ports provided to face in a downstream direction at positions dividing the area of said cross section of the main duct into equal areas,a total pressure measurement conduit vertically disposed within the fluid flow measurement unit and having measurement ports communicated with said pressure measurement ports respectively,a hydrostatic pressure measurement conduit vertically provided within said fluid flow measurement unit and having measurement ports communicated with said hydrostatic pressure measurement ports,means isolating the interior of said measurement unit from the interior of said total pressure conduit, from the interior of said hydrostatic measurement conduit and from the exterior of said measurement unit,means for introducing and withdrawing a coolant into said isolated interior of said measurement unit for cooling said total pressure conduit and said hydrostatic measurement conduit, andmeans for removing solid particles from said total pressure conduit and said hydrostatic measurement conduit by gravity to the exterior of said measurement unit.
1 Assignment
0 Petitions
Accused Products
Abstract
A flow rate measurement apparatus is comprised of a generally cylindrical tubular main body introduced transversely of the main duct through which flows a fluid whose flow rate is to be measured. A first conduit for measuring the total pressure and a second conduit for measuring the static pressure are introduced along the upstream and downstream sides of the interior of the tubular main body, respectively, while coolant water inlet and outlet pipes are also introduced into the mid portion of the interior of the main body for circulation and cooling. Dust and dirt entrained in the fluid and introduced into the first and second conduits descends by gravity so as to be collected in associated dust boxes for removal.
17 Citations
4 Claims
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1. An apparatus for measuring fluid flow of a fluid containing solid particles, comprising:
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a fluid flow measurement unit disposed extending parallel to a radial cross sectional section of a main duct, a plurality of pressure measurement ports provided on said fluid flow measurement unit to face an upstream direction at the centers of a number of annular areas equally dividing the area of said radial cross section of the main duct, hydrostatic pressure ports provided to face in a downstream direction at positions dividing the area of said cross section of the main duct into equal areas, a total pressure measurement conduit vertically disposed within the fluid flow measurement unit and having measurement ports communicated with said pressure measurement ports respectively, a hydrostatic pressure measurement conduit vertically provided within said fluid flow measurement unit and having measurement ports communicated with said hydrostatic pressure measurement ports, means isolating the interior of said measurement unit from the interior of said total pressure conduit, from the interior of said hydrostatic measurement conduit and from the exterior of said measurement unit, means for introducing and withdrawing a coolant into said isolated interior of said measurement unit for cooling said total pressure conduit and said hydrostatic measurement conduit, and means for removing solid particles from said total pressure conduit and said hydrostatic measurement conduit by gravity to the exterior of said measurement unit. - View Dependent Claims (2, 3, 4)
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Specification