| 摘要 |
A fluid flow measuring device comprising a hollow cylindrical housing having a plurality of recessed areas extending about a portion of the interior surface of the housing and through only a portion of the thickness of the housing; fluid flow straightening means having a plurality of recessed areas in the exterior surface of the fluid flow straightening means; a plurality of fastening means, each fastening means having a portion inserted in the area formed when a recessed area in the housing and a recessed area in the fluid flow straightening means are aligned while the remaining portion of the fastening means substantially conforms to the exterior surface of the fluid flow straightening means thereby fastening the fluid flow straightening means to the housing; and means for measuring the flow of fluid through the housing. Alternately, the housing may have a continuous recess about the interior surface in place of the plurality of recessed areas.
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