Download presentation
Presentation is loading. Please wait.
Published byElmer Watkins Modified over 9 years ago
1
Austin Frazer Eileen Kobal Ana Maria Maldonado Marie Rohrbaugh Moog Gas Evacuation Systems Design Review
2
The Team Austin Frazer Role: Lead Engineer - Analysis Major: Mechanical Engineering Eileen Kobal Role: Lead Engineer – Mixtures of Gas Fluids Major: Chemical Engineering Ana Maria Maldonado Role: Team Manager Major: Industrial Engineering Marie Rohrbaugh Role: Project Manager Major: Mechanical Engineering
3
Problem Statement To mass spectrometer UUT High pressure helium Fixturing/leakage similar to other side Fixtures interface between AGT can and UUT Fixture leakage UUT leakage
4
Current Procedure Our process needs to minimize leakage from fixtures Oring Leakage Diagram
5
VOC to VOE customer rating Mate with the current software system No extra procedure is required to make the system run The system starts when the test starts Nitrogen moves when the system is told to start <5 sec between start of test and equilibrium Reduce the leakage into the can to 1% of original value No adjustment made to original design <100scc/min of Nitrogen used Maintenance plans provided Training materials provided cost of system is <$10,000 time between maintenance cycles is >30 days FMEA performed training takes <30 min provide accurate test data 10 *** Preserve Vacuum 1 * Reduce delay caused by false failures 7 * * minimize increased cycle time 8 ***** * user safety 12 ** operator understands process 3 * ** system is controlled transparently by the existing software 9 ** minimize cost by balancing initial cost, maintenance cost, and consumable materials 6 ***** * sturdy and robust system 11 ** maximize time between maintenance cycles 4 ** maintenance plans 5 * maintenance can be accomplished with minimal money and time 2 * **
6
Voice of the Engineer
7
Design Constraints Safety Contamination Class 10,000 clean room. All products should comply to a strict cleanliness certification Existing Fixture Cannot modify inside of can Must be attachable to can Gas Flow Nitrogen gas at 120psia available Vacuum at 1psia available
8
Function Tree
9
Concept Generation
10
Pugh Diagram- Move/ Evacuate the Gas Comparison Concept ABCD small centrifugal pump to draw out test gas heating / cooling a reservoir of inert gas to draw out test gas additional mass spectrometer at the vent draws out test gas small vacuum pump alternating drawing down the test gas and pumping with a flush gas Criteria Weight Application elsewhere at Moog10100 Availability of resources70-7 00 Contamination possibility900000 Cost80-8 0 Durability (everyday use)70-7000 Effectiveness90-9999 Fits timeline100-10000 Long term benefits500000 Maintainable50-5000 Meets space limitations800000 Safety1000000 Works transparently with current system900-900 0-47-1491
11
Pugh Diagram- Access the Gas Comparison ConceptABC larger cavity for gas collection modify vent geometry fill vent with a viscous fluid to prevent He from entering have a different o-ring material so that the He doesn't go through CriteriaWeight Application elsewhere at Moog1001 Availability of resources700-7 Contamination possibility900-9 Cost70-77 Durability (everyday use)700-70 Effectiveness909-90 Fits timeline100000 Long term benefits500-50 Maintainable500-55 Meets space limitations80088 Safety1000 0 Works transparently with current system900-99 02-270
12
Block Diagram
13
Flexline to Nitrogen Source Flexline to Vacuum Source To vent To large o-ring X2 Relief Valve AN Fitting 2-way 2-position solonoid valve
14
Flexline to Nitrogen Source Flexline to Vacuum Source To vent To large o-ring X2 Relief Valve 3-way 2-position solonoid valve AN Fitting 2-way 2-position solonoid valve
15
Analysis Performed – Simscape Model
16
Case 1)
17
Analysis Performed – Simscape Model Case 2)
18
Analysis Performed – Simscape Parameters Model Orings as Orifices 1 2
19
Diffusion Diffusion Coefficient for 2 gasses Diffusion Flux: Movement due to Diffusion across an area
20
Gantt Diagram
21
Risk Assessment
22
Questions??
Similar presentations
© 2024 SlidePlayer.com. Inc.
All rights reserved.