QUALIFICATION OF FLOW CONDTIONING DEVICES ACCORDING TO THE NEW API 14.3 PART 2 PROCEDURE. Klaus J. Zanker and Dale Goodson Daniel Industries, Inc.
Old Tube Bundle A D a 1. a/d < 1/4 2. L/a > 1 3. A < 1/16(π D 2 /4) 4. Tubes any size - symmetrical 5. Tubes any shape 6.Tubes mounted into end rings 7. Tubes welded together 8. Tubes thin walled 9. All tubes mounted axially
New Tube Bundle Tube bundle OD Items 1, 2, 3, 4, 5, & 6 no longer apply, only 19 tube uniform concentric tube bundle allowed All tubes must touch one another Tubes must be welded together OD >.95 D t < 2.5 % of D Tube wall thickness = t
API Type Approval Requirements Baseline Calibration, evaluating performance of test facility To prove that the mechanical baseline configuration is valid, the baseline CD values should lie within the 95% confidence interval for the RG equation. Standard does not demand an accredited facility
Disturbance Tests Good Flow Conditions - test evaluating impact of flow conditioner on fully developed velocity profile. Two 9 Elbows in Perpendicular Planes - testing of flow conditioner performance in handling combination of a modest swirl and a non-symmetrical velocity profile. Gate Valve 5% Closed - test evaluating flow conditioner performance in strongly non-symmetrical velocity profile. High Swirl - test assessing flow conditioner performance in flows with high swirl angle (over 25 ).
Additional Tests Orifice b ratio: Check swirl test at β=.4 and β=7 Reynolds Number Sensitivity: Test at two ranges 1 4 < Re <5 x 1 5 and Re > 1 6 with approximately a 7:1 ratio. Scaling: Test at two sizes selected from D < 4 and D > 8
Zanker Plate Design Zanker straightener 1959 at BHRA, NEL conference in 196, was included in ISO 5167 in 198 Mitsubishi in 1973 US patent 38451 Elizabeth Laws in 1992 Modified Zanker: Thick plate, no honeycomb
Flow Straightener
Zanker Plate
.67b : Good Flow Conditions.8 % Deviation of Actual CD from Baseline CD.4.2 -.2 -.4 - -.8 2 4 6 8 1 12 14 16 18 Zanker Plate Distance in Pipe Diameters from the Orifice Plate 3 O'Clock 12 O'Clock 9 O'Clock
67b : Two 9 Elbows in Perpendicular Planes 17 D Meter Tube.8 % Deviation of Actual CD from Baseline CD.4.2 -.2 -.4 - -.8 2 4 6 8 1 12 14 16 18 Zanker Plate Distance in Pipe Diameters from the Orifice Plate 3 O'Clock 12 O'Clock 9 O'Clock Error Band
.67b : Two 9 Elbows in Perpendicular Planes 29D Meter Tube.8 % Deviation of Actual CD from Baseline CD.4.2 -.2 -.4 - -.8 5 1 15 2 25 3 35 Zanker Plate Distance in Pipe Diameters from the Orifice Plate 3 O'Clock 12 O'Clock 9 O'Clock Error Band
.67b : Two 9 Elbows in Perpendicular Planes 45D Meter Tube.8 % Deviation of Actual CD from Baseline CD.4.2 -.2 -.4 - -.8 5 1 15 2 25 3 35 4 45 5 Zanker Plate Distance in Pipe Diameters from the Orifice Plate 3 O'Clock 12 O'Clock 9 O'Clock Error Band
.67b : 5% Closed Gate Valve 17D Meter Tube.8 % Deviation of Actual CD from Baseline CD.4.2 -.2 -.4 - -.8 2 4 6 8 1 12 14 16 18 Zanker Plate Distance in Pipe Diameters from the Orifice Plate 3 O'Clock 12 O'Clock 9 O'Clock Error Band
.67b : 5% Closed Gate Valve 29D Meter Tube.8 % Deviation of Actual CD from Baseline CD.4.2 -.2 -.4 - -.8 5 1 15 2 25 3 35 Zanker Plate Distance in Pipe Diameters from the Orifice Plate 3 O'Clock 12 O'Clock 9 O'Clock Error Band
.67b : 5% Closed Gate Valve 45D Meter Tube.8 % Deviation of Actual CD from Baseline CD.4.2 -.2 -.4 - -.8 5 1 15 2 25 3 35 4 45 5 Zanker Plate Distance in Pipe Diameters from the Orifice Plate 3 O'Clock 12 O'Clock 9 O'Clock Error Band
Swirl Producing Vane
Swirl produced 35 3 Swirl angle (degrees) 25 2 15 1 5.5 1 1.5 2 Distance from pipe wall (in)
.67b : 17 D Meter Tube : 32 swirl.8 % Deviation of Actual C D from Baseline CD.4.2 -.2 -.4 - -.8 2 4 6 8 1 12 14 16 18 Distance of Zanker Plate in Pipe Diameters from the Orifice 3 O'Clock 12 O'Clock 9 O'Clock Error Band
.67b : 32º Swirl : 29D Meter Tube % Deviation of Actual CD from Baseline CD.8.4.2 -.2 -.4 - -.8 5 1 15 2 25 3 Zanker Plate Distance in Pipe Diameters from the Orifice Plate 3 O'Clock 12 O'Clock 9 O'Clock Error Band
.67b : 32º Swirl : 45D Meter Tube % Deviation of Actual CD from Baseline CD.8.4.2 -.2 -.4 - -.8 5 1 15 2 25 3 35 4 45 Zanker Plate Distance in Pipe Diameters from the Orifice Plate 3 O'Clock 12 O'Clock 9 O'Clock Error Band
.4 b : 17 D Meter Tube : 32 swirl.8 % Deviation of Actual CD from Baseline C D.4.2 -.2 -.4 - -.8 2 4 6 8 1 12 14 16 18 Distance of Zanker Plate in Pipe Diameters from the Orifice 3 O'Clock 12 O'Clock 9 O'Clock Error Band
.4 b : 29 D Meter Tube : 32 swirl % Deviation of Actual CD from Baseline CD.8.4.2 -.2 -.4 - -.8 5 1 15 2 25 3 35 Distance of Zanker Plate in Pipe Diameters from the Orifice 3 O'Clock 12 O'Clock 9 O'Clock Error Band
.4 b : 45 D Meter Tube : 32 swirl.8 % Deviation of Actual CD from Baseline CD.4.2 -.2 -.4 - -.8 5 1 15 2 25 3 35 Distance of Zanker Plate in Pipe Diameters from the Orifice 3 O'Clock 12 O'Clock 9 O'Clock Error Band
.67 b : 4" OFU: High Reynolds Number: Good Flow Condition.8 % Deviation of Actual CD from Baseline CD.4.2 -.2 -.4 - -.8 5 1 15 2 25 3 35 Distance of Zanker Plate in Pipe Diameters from the Orifice 3 O'Clock 9 O'Clock Error Band
.67 b : 8" OFU : Good Flow Condition.8 % Deviation of Actual CD from Baseline CD.4.2 -.2 -.4 - -.8 5 1 15 2 25 3 35 Distance of Zanker Plate in Pipe Diameters from the Orifice 3 O'Clock 9 O'Clock Error Band
4' OFU :.67b :Ceesi & Daniel Baselines 14 12 1 CD 8 6 4 2.E+ 5.E+5 1.E+6 1.5E+6 2.E+6 2.5E+6 3.E+6 3.5E+6 Pipe Reynolds Number CEESI Daniel RG Equa. +Uncert. -Uncert
Good Flow Conditions : 4" Hi R D & Low R D : 8 inch Deviation of Actula C D from Baseline C D.8.4.2 -.2 -.4 - -.8 5 1 15 2 25 3 35 Distance of Zanker Plate from the Orifice Plate in Pipe Diameters Lo Rd Hi Rd +.23% -.23% 8 inch
.67 b : 8" OFU : 5% Closed Gate Valve : 17D Meter Tube.8 % Deviation of Actual C D from Baseline C D.4.2 -.2 -.4 - -.8 5 1 15 2 25 3 35 Distance of Zanker Plate in Pipe Diameters from the Orifice 12 O'Clock 6 O'Clock Error Band
.67 b : 8" OFU : 5% Closed Gate Valve : 29D Meter Tube.8 % Deviation of Actual CD from Baseline CD.4.2 -.2 -.4 - -.8 5 1 15 2 25 3 35 Distance of Zanker Plate in Pipe Diameters from the Orifice 12 O'Clock 6 O'Clock Error Band
.67 b : 8" OFU : 5% Closed Gate Valve : 45D Meter Tube.8 % Deviation of Actual CD from Baseline CD.4.2 -.2 -.4 - -.8 5 1 15 2 25 3 35 Distance of Zanker Plate in Pipe Diameters from the Orifice 12 O'Clock 6 O'Clock Error Band
Conclusions The three pairs of taps are not always all in tolerance The high swirl test requires better definition The Zanker Flow Conditioner has passed all the type approval tests This makes a reasonably priced nonproprietary flow conditioner available to the industry
Conclusions Recommendation: - use 17D meter tube with conditioner 7.5D from the orifice plate, as this arrangement passed all tests The conditioner can be used as follows: Beta up to 7 with any disturbance in any pipe size with no upper limit on Reynolds Number