Safety Relief Valve Test Rig Update
Transcript of Safety Relief Valve Test Rig Update
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Safety Relief Valve Test Rig Update Marc Claas - IRC
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Current Location Basement of Mechanical
Engineering
Rig is anchored to the floor
Secure gas cylinder storage
Possible future air line
Added high speed data acquisition system
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Test Rig Compressed air cylinders with two-stage regulator
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Test Rig
5.9 cubic foot vessel to buffer pop test
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Test Rig
Vessel drain valve
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Test Rig
Inlet connection
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Test Rig
Relief valve undergoing test
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Test Rig
High speed data acquisition
Calibrated Pressure Transducer
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Pressure Transducer Omega PX309-500GI
4-20 mA signal with 9-30V excitation
NIST Traceable Calibration
0.25% Static Accuracy Typical
2% Total Error Band on Most Ranges of Amplified Units
Response time of <1 ms
http://www.omega.com/pptst/Px309.html
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Data Acquisition Hardware National Instruments 9203
8-Channel ±20 mA,
200,000 Samples/Second
16-Bit AI Module
cDAQ-9171
USB to computer
Power
Data
Easy to set up and use
http://sine.ni.com/nips/cds/view/p/lang/en/nid/208805
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Data Acquisition Software LabView Signal Express
Easy set-up for basic logging and data visualization
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Video of Operation
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Test Results Software outputs list of numbers
Can be plotted and manipulated with Excel
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Data Analysis Using pressure
Temperature of the air in the rig can be calculated
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Data Analysis Using pressure
Mass of the air in the rig can be calculated
Time rate change of rig’s air mass allows mass flow to be estimated
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Data Analysis – mass flow rate
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Future Plans
We are continuing to shake test the rig
Possible compressed air line in future
We are considering what additional testing we can perform
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Questions