QUALIFICATION OF FLOW CONDTIONING DEVICES ACCORDING …€¦ · API Type Approval RequirementsAPI...

Measurement & Control

QUALIFICATION OF FLOW CONDTIONING DEVICES ACCORDING TO

THE NEW API 14.3 PART 2 PROCEDURE.

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 BundleOld Tube Bundle1. a/D < 1/4

2. L/a > 10

3. A < 1/16(π D2 /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 axiallyA

D

a


New Tube BundleNew Tube Bundle

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 > 0.95 D

• t < 2.5 % of D

Tube wall thickness = t

Tube bundle OD


API Type Approval RequirementsAPI Type Approval Requirements

l Baseline Calibration, evaluating performance of test facility

l To prove that the mechanical baseline configuration is valid, the baseline CD values should lie within the 95% confidence interval for the RG equation.

l Standard does not demand an “accredited facility”


Disturbance TestsDisturbance Tests

l Good Flow Conditions - test evaluating impact of flow conditioner on fully developed velocity profile.

l Two 900 Elbows in Perpendicular Planes - testing of flow conditioner performance in handling combination of a modest swirl and a non-symmetrical velocity profile.

l Gate Valve 50% Closed - test evaluating flow conditioner performance in strongly non-symmetrical velocity profile.

l High Swirl - test assessing flow conditioner performance in flows with high swirl angle (over 250).


Additional TestsAdditional Tests

l Orifice ββ ratio: Check swirl test at β=0.40 and β=0.67

l Reynolds Number Sensitivity: Test at two ranges 104 < Re <5 x 105 and Re > 106

with approximately a 7:1 ratio.

l Scaling: Test at two sizes selected from D < 4” and D > 8”


Zanker Plate DesignZanker Plate Design

l Zanker straightener 1959 at BHRA, NEL conference in 1960, was included in ISO 5167 in 1980

l Mitsubishi in 1973 US patent 3840051

l Elizabeth Laws in 1992

l Modified Zanker: Thick plate, no honeycomb


Flow Straightener


Zanker PlateZanker Plate


Good Flow Conditions

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 2 4 6 8 10 12 14 16 18

Zanker Plate Distance in Pipe Diameters from the Orifice Plate

% D

evia

tion

of A

ctua

l CD

from

Bas

elin

e C

D

3 O'Clock 12 O'Clock 9 O'Clock

.67ββ :


-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 2 4 6 8 10 12 14 16 18


% D

evia

tion

of A

ctua

l CD

from

Bas

elin

e C

D

3 O'Clock 12 O'Clock 9 O'Clock Error Band

67ββ : Two 90° Elbows in Perpendicular Planes 17 D Meter Tube


-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 5 10 15 20 25 30 35


% D

evia

tion

of

Act

ual

CD

fro

m B

asel

ine

CD


.67ββ : Two 90° Elbows in Perpendicular Planes 29D Meter Tube


-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 5 10 15 20 25 30 35 40 45 50


% D

evia

tion

of

Act

ual

CD

fro

m B

asel

ine

CD


.67ββ : Two 90° Elbows in Perpendicular Planes 45D Meter Tube


-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 2 4 6 8 10 12 14 16 18


% D

evia

tio

n o

f A

ctu

al C

D f

rom

Bas

elin

e C

D


.67ββ : 50% Closed Gate Valve 17D Meter Tube


-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 5 10 15 20 25 30 35


% D

evia

tion

of A

ctua

l CD

fro

m B

asel

ine

CD




-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 5 10 15 20 25 30 35 40 45 50


% D

evia

tio

n o

f A

ctu

al C

D f

rom

Bas

elin

e C

D




Swirl Producing VaneSwirl Producing Vane


Swirl produced

0

5

10

15

20

25

30

35

0 0.5 1 1.5 2

Distance from pipe wall (in)

Sw

irl a

ng

le (

deg

rees

)


.67β β : 17 D Meter Tube : 32° swirl

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 2 4 6 8 10 12 14 16 18

Distance of Zanker Plate in Pipe Diameters from the Orifice

% D

evia

tio

n o

f Act

ual

CD f

rom

Bas

elin

e C

D



.67ββ : 32º Swirl : 29D Meter Tube

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 5 10 15 20 25 30


% D

evia

tio

n o

f A

ctu

al C D

fro

m B

asel

ine

C D



.67ββ : 32º Swirl : 45D Meter Tube

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 5 10 15 20 25 30 35 40 45

Zanker Plate Distance in Pipe Diameters from the Orifice Plate% D

evia

tio

n o

f A

ctu

al C

D f

rom

Bas

elin

e C

D



.40 ββ : 17 D Meter Tube : 32° swirl

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 2 4 6 8 10 12 14 16 18


% D

evia

tio

n o

f A

ctu

al C

D f

rom

Bas

elin

e C

D




-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 5 10 15 20 25 30 35


% D

evia

tio

n o

f Act

ual

CD fr

om

Bas

elin

e C

D




-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 5 10 15 20 25 30 35


% D

evia

tio

n o

f A

ctu

al C

D f

rom

Bas

elin

e C

D



.67 ββ : 4" OFU: High Reynolds Number: Good Flow Condition

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 5 10 15 20 25 30 35


% D

evia

tion

of

Act

ual

CD f

rom

Bas

elin

e C

D

3 O'Clock 9 O'Clock Error Band


.67 ββ : 8" OFU : Good Flow Condition

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 5 10 15 20 25 30 35


% D

evia

tion

of

Act

ual

CD f

rom

Bas

elin

e C

D



4' OFU : .67b :Ceesi & Daniel Baselines

0.6

0.602

0.604

0.606

0.608

0.61

0.612

0.614

0.0E+00 5.0E+05 1.0E+06 1.5E+06 2.0E+06 2.5E+06 3.0E+06 3.5E+06

Pipe Reynolds Number

CD

CEESI Daniel RG Equa. +Uncert. -Uncert


Good Flow Conditions : 4" Hi RD & Low RD : 8 inch

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 5 10 15 20 25 30 35

Distance of Zanker Plate from the Orifice Plate in Pipe Diameters

Dev

iati

on

of

Act

ula

CD

fro

m B

asel

ine

CD

Lo Rd Hi Rd +.23% -.23% 8 inch


.67 ββ : 8" OFU : 50% Closed Gate Valve : 17D Meter Tube

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 5 10 15 20 25 30 35


% D

evia

tio

n o

f A

ctu

al C

D f

rom

Bas

elin

e C

D




-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

0 5 10 15 20 25 30 35


% D

evia

tio

n o

f A

ctu

al C

D f

rom

Bas

elin

e C

D



ConclusionsConclusions

l The three pairs of taps are not always all in tolerance

l The high swirl test requires better definition

l The Zanker Flow Conditioner has passed all the type approval tests

l This makes a reasonably priced non-proprietary flow conditioner available to the industry


ConclusionsConclusions

l Recommendation: - use 17D meter tube with conditioner 7.5D from the orifice plate, as this arrangement passed all tests

l The conditioner can be used as follows:l Beta up to 0.67

l with any disturbance

l in any pipe size

l with no upper limit on Reynolds Number

QUALIFICATION OF FLOW CONDTIONING DEVICES ACCORDING …€¦ · API Type Approval RequirementsAPI...

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Transcript of QUALIFICATION OF FLOW CONDTIONING DEVICES ACCORDING …€¦ · API Type Approval RequirementsAPI...