Flow Conditioner Field Updates for CPA 50E Flow Conditionernew.cpacl.com/pdf/Dallas 2001...

Flow Conditioner Field Updates for CPA 50E Flow Conditioner

Blaine D. Sawchuk P. Eng.The Spring 2001 AGA Operations

Conference

TOPICS for DISCUSSIONTOPICS for DISCUSSION

CPA 50 E Description CPA 50 E Description Ultrasonic Meter LearningsUltrasonic Meter Learnings

Orifice Meter ReviewOrifice Meter ReviewFlow Conditioner Secondary Flow Flow Conditioner Secondary Flow

MeasurementMeasurementConclusionsConclusionsQuestionsQuestions

CPA 50 E Description

CPA 50E Description

“ONLY ONE DESIGN”1/8/16 Configuration

49 % Porosity∆P = ½ρKv² k = 1.5 to 1.7

Holes as per listedThickness 15 % of pipe

diameterStainless Steel, Carbon, etc.

Flanged, Wafer (shown), pinned, welded

CPA 50E Description

Technical Validity of CPA 50E:The plate is only a piece of steel with holes

without the technical backup.

CPA 50E Description

● R&D at NOVA 1985 to 1994 – CPA 50E● Testing validation at NOVA, SwRI, K-Lab, PTB

Germany, etc.– 1996 to present – CPA 50E● API April 2000 AGA – 3 compliance – CPA 50E

presented at AGA Denver ● Ultrasonic meter testing – 1999 SwRI – CPA 50 E● Canadian Government Approval – 1997 – CPA 50E

CPA 50E Description

Ultrasonic Meter Learnings


Why a flow conditioner?Follow these thought

exercises:








Two papers essential:Terry Grimley SwRI – Ultrasonic Meter

Installation Configuration Testing AGA 2000 Operations Conference, Denver

Yeh and Mattingly NIST– Computer Simulations of Ultrasonic Flow Meter Performance in Ideal and Non-Ideal Pipe Flows ASME 1997 summer meeting EDSM97-3012


Recommendations:1. Put thought into upstream meter station

piping to minimize loading on flow conditioner.

2. Meter tube roughness, roundness, length and overall fab quality important.

3. Work closely with meter, fab shop and flow conditioner vendors.

4. Calibrate5. If at all possible leave the meter tube

assembly bolted together.


Continued:● Keep internal pipe roughness the

same through out assembly.

Orifice Meter Orifice Meter -- ReviewReview

Review of AGA 3 and Flow Conditioners

Type Approval Test – Appendix 2D

Compliance - Type Approval Test #1


Taken from GRI Report No. GRI-97/0207

Prepared by Dr. T.B. Morrow

For GRI

At

SouthWest Research Institute

December 1997



CPA 50E - Good Flow Conditions

-1.4-1.2

-1-0.8-0.6-0.4-0.2

00.2

0 10 20 30 40 50 60

Distance from exit of Flow Conditioner to Orifice Plate Pipe Diameters

% d

evia

tion

in C

d fro

m

Bas

elin

e

0.4 Beta Tap #10.4 Beta Tap #20.6 Beta Tap #10.6 Beta Tap #20.67 Beta Tap #10.67 Beta Tap #20.75 Beta Tap #10.75 Beta Tap #2



CPA 50E - 50% Gate Valve

-2.5

-2

-1.5

-1

-0.5

0

0.5

0 10 20 30 40 50

Distance from exit of Flow Conditioner to Orifice Plate - Pipe Diameters

% d

evia

tion

in C

d fr

om

Base

line

0.4 Beta Tap #1 17D

0.4 Beta Tap #2 17D

0.6 Beta Tap #1 17D

0.6 Beta Tap #2 17D

0.67 Beta Tap #1 17D




0.4 Beta Tap #1 29D

0.4 Beta Tap #2 29D

0.6 Beta Tap #1 29D

0.6 Beta Tap #2 29D






0.4 Beta Tap #2 45D

0.6 Beta Tap #1 45D

0.6 Beta Tap #2 45D







CPA 50E - Chevron Swirl Generator

-2

-1.5

-1

-0.5

0

0.5

0 10 20 30 40

Distance from exit of Flow Conditioner to Orifice Plate - Pipe Diameters

% d

evia

tion

in C

d fro

m B

asel

ine

0.4 Beta Tap #1 17D

0.4 Beta Tap #2 17D

0.6 Beta Tap #1 17D

0.6 Beta Tap #2 17D





0.4 Beta Tap #1 45D

0.4 Beta Tap #2 45D

0.6 Beta Tap #1 45D

0.6 Beta Tap #2 45D







CPA 50E - Two Elbows out of Plane

-2

-1.5

-1

-0.5

0

0.5

0 10 20 30 40 50

Distance from exit of Flow Conditioner to Orifice Plate

% d

evia

tion

in C

d fr

om B

asel

ine

0.4 Beta Tap #1 17D

0.4 Beta Tap #2 17D

0.6 Beta Tap #1 17D

0.6 Beta Tap #2 17D





0.4 Beta Tap #1 29D

0.4 Beta Tap #2 29D

0.6 Beta Tap #1 29D

0.6 Beta Tap #2 29D






0.4 Beta Tap #2 45D

0.6 Beta Tap #1 45D

0.6 Beta Tap #2 45D








CPA 50E - Scalibility Test

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

0 5 10 15 20 25Distance from flow conditioner to orifice plate - Pipe

Diameters

Dev

iatio

n fr

om B

asel

ine

Cd

B 0.31B 0.41B 0.50B 0.60B 0.67B 0.75



● As previous results, NPS 4” Pipe, Beta = 0.67, Re = 2.7 x 106, and…

NPS 4” Pipe, Beta = 0.68, Re as listed.

Conclusions

CPA 50E Performance at Beta 0.7517D Meter Run

Results from GRI Report No. 97/0207 "Development of a Flow Conditioner Performance Test"

-2.50%

-2.00%

-1.50%

-1.00%

-0.50%

0.00%

0.50%

1.00%

1.50%

2.00%

2.50%

1 2 3 4 5 6 7 8 9 10 11 12 13

Distance from CPA 50E Outlet to Orifice Plate (Pipe Diameters)

Deva

ition

Fro

m B

asel

ine

Cd

Good Flow Condit ions Ta p 1


High S wir l Ta p 1

High S wir l Ta p 2

P a r t ly Close d Va lve Tap 1

P a r t ly Close d Va lve Tap 2

2 Elbows out of P la ne Ta p 1


Conclusions

Tube Bundle Performance at Beta 0.7517D Meter Run

Results from GRI Report No. 97/0207 "Development of a Flow Conditioner Performance Test"

-2.50%

-2.00%

-1.50%

-1.00%

-0.50%

0.00%

0.50%

1.00%

1.50%

2.00%

2.50%

1 2 3 4 5 6 7 8 9 10 11 12 13

Distance From Tube Bundle Outlet to Orifice Plate (Pipe Diameters)

Devi

atio

n Fr

om B

asel

ine

Cd



High S wirl Ta p 1

High S wirl Ta p 2

P a rt ly Close d Va lve Ta p 1

P a rt ly Close d Va lve Ta p 2



Flow Conditioner Secondary Flow Flow Conditioner Secondary Flow MeasurementMeasurement

You will reduce the measurement uncertainty of the metering system by approximately 30% by using the flow

conditioner as a check meter.





Papers:Laws and Quazzane – Integrated Flow

Conditioning and Flow Metering, FED vol 211, Fluid Measurement and Instrumentation ASME 1995

Questions

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