copyright © siemens ag 2006. all rights reserved. design team calvin stewart carl stewart huy lam...
TRANSCRIPT
Copyright © Siemens AG 2006. All rights reserved.
SENIOR DESIGN PROJECT: SIEMENS LP FLOW GUIDE (SIE)
Design Team
Calvin Stewart
Carl Stewart
Huy Lam
Kirtan Patel
Jessica Hanson
PROJECT PURPOSE
Page 3 Feb - 5
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EXISTENCE OF A NEED
A Diffuser is designed to minimize the pressure loss between the last row blades and the condenser.
This flow guide is hard bolted onto the inner casing and can not alter its geometry to suit different operating conditions.
To alleviate this problema design is needed that can Modify the profile of the flowguide to optimize its performance at various back pressures.
Page 4 Feb - 5
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Design Requirements
Original Requirements
Simple Design
Able to increase and decrease the flow guide length, change profile,
and Rfg
Continuous adjustment over a year span
Backup system to prevent shutdown of the steam turbine
Repeatedly attach to the same axial and transverse position
Page 5 Feb - 5
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Design Requirements
Modified Requirements
Only design top center section
Only a 2D design is required
Manufacturing process is not an issue
Cost is not an issue
FBD and Stress Calculations
Design for a safety factor of 2
Use hydro-actuators with compressed water (steam).
Detailed Design Analysis
Page 7 Feb - 5
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2D Summer
The Blue Circle represents the geometry necessary during the summer for
optimized efficiency
Working Model was used as design optimization tool
Page 8 Feb - 5
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2D Winter
The Orange Circle represents the geometry necessary during the winter for
optimized efficiency
Working Model was used to validate conformance to the shape change design requirements
Page 9 Feb - 5
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2D Animated
Demonstration of Conformance to Design Requirements
Page 10 Feb - 5
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Parametric Model
Member Relation
DP1 0.350
DP2 0.700
DP3 1.000
L1 1.000
L2 1.040
FLANGE 1.000
SLIDER 0.900
Rfg 2.4
Member Reduced Extendedθ1 6.000 6.000
θ2 35.156 20.109θ 3 62.360 34.991
φ 14.594 37.837
Page 11 Feb - 5
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FBD
Factor of safety is 2. Therefore, the loads are doubled.
Assume massless rods/links.
Use 2- force members.
Page 12 Feb - 5
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Stress
3 Kilopascal Pressure Conservative value maximum pressure seen on
outside diffuser surface area
Page 13 Feb - 5
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Actuators
An Actuator is a mechanical device that can be use to move or control a mechanism or system.
Hydraulic actuator(6 per section)
Advantages/Disadvantages
Actuator # Actuator extended
Actuator reduced
Difference(stroke)
Actual Length
(max & min)
Actual Stroke
Primary Actuator(68) 0.869 0.419 0.45 .550(max)
.265(min) 0.285
Middle actuator(62) 1.916 1.166 0.75 1.212(max)
0.737(min) 0.474
Bottom actuator(47) 0.498 0.453(original) 0.045 0.315(max)
0.287(min) 0.0285
Page 14 Feb - 5
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Actuators
Three Manufacturershttp://www.eckart-gmbh.de http://www.peninsularcylinders.com/ http://www.parker.com
Hydraulic rotary linear actuators use a pressurized, incompressible fluid and a patented method to convert rotary motion into linear extension.
Page 15 Feb - 5
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Materials
Major ComponentsCarbon Steel Alloy Siemens Proprietary
Friction Reduction Layer (over Diffuser Plates)Fluoroelastomers are fluorinated synthetic polymers designed for harsh environments including aggressive chemical and high temperature applications.
Fluoroelastomers can perform up to 450 F to 500 F.
Fluoroelastomer are resistant to • oils• lubricants• fuels• high temperature steam
Page 16 Feb - 5
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Pin Sub-Assembly
Individual Designs Design optimization and safety
Page 17 Feb - 5
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Pin Sub-Assembly
Pin Parts Male Holder Female Holder Rod Bolts
Page 18 Feb - 5
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Slider Sub-Assembly
Individual Designs Design optimization and safety
Page 19 Feb - 5
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Slider Sub-Assembly
Slider Parts Cover Holder Base Holder Inset Ball Bearings
Page 20 Feb - 5
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Final Assembly
Image of Assembly
Video rotating around Assembly
Page 21 Feb - 5
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Documentation of Design Records
Page 22 Feb - 5
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Drawings
Page 23 Feb - 5
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Bill of Materials
A Bill of material is a list of parts going from assembly to sub-assembly to individual parts. The type of
BOM we will use is an indented one. With the finished product at the head.
Part Name Level Part Number Revision Quantity Make/BuyFlange 1 001-001 A 1 NoneDP1 2 002-001 A 1 MakeDP2 2 002-002 A 1 MakeDP3 2 002-003 A 1 MakeSlider 3 003-001 A 1 MakeL1 4 004-001 A 2 MakeL2 4 004-002 A 2 MakeA1 5 005-001 A 2 BuyA2 5 005-002 A 2 BuyA3 5 005-003 A 2 BuyPin1 6 006-001 A 2 MakePin2 6 006-002 A 4 MakeMaterial 7 007-001 A N/A Buy
Page 24 Feb - 5
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Operation of Mechanism
In order for the system to function according to the requirements (over a yearly cycle) its important to have a feedback control system which will automatically adjust the mechanism based on recordable stimuli
Possible Sampling Sources Cooling Water
Thermocouple Back Pressure
Pressure coupleSample
Activate Actuators
Start FBC at Steady State
SCHEDULE & ASSIGNMENTS
Page 26 Feb - 5
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GANTT CHARTGroup Tasks 8-Jan 15-Jan 22-Jan 29-Jan 5-Feb 12-Feb 19-Feb 26-Feb 4-Mar 11-Mar 18-Mar 25-Mar 1-Apr 8-Apr 15-Apr
Detailed Design Siemens Approval Report Sections Introductory Material Redefinition of Design Reqs X Bill of Materials Conclusion Material Research Projects X Actuator Study X Pinning Study X Slider Study X Brief on Fouroelastomers Calculations X Free Body Diagrams X MathCAD Code X Stress Calculations CAD X Pro Engineer Modeling X Pro Engineer Animation X Pro Engineer Drawings X Presentation of Detailed Design Written Detailed Design Report Manufacturing Determine Prototype Style Funding Proposal Building Testing Documentation Final Presentation Final Report
Page 27 Feb - 5
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Individual Tasks
Individual Tasks 8-Jan 15-Jan 22-Jan 29-Jan 5-Feb 12-Feb Jessica Hanson X Free Body Diagrams X MathCAD Code Huy Lam Introductory Material X Actuator Study Kirtan Patel X Pro Engineer Modeling X Pro Engineer Animation X Pro Engineer Drawings Calvin Stewart Conclusion Material X Pinning Study X Slider Study X Stress Calculations Carl Stewart Redefinition of Design Reqs X Bill of Materials X Brief on Fouroelastomers
Jessica HansonReport Organizer and CAD Modeler
Huy Lam
Presentation Organizer and Mechanism Design Researcher
Kirtan Patel
Data Organizer, Materials Researcher, and CAD Modeler
Calvin Stewart
Team Organizer, Mechanism Design Researcher, and Finite Element Analyzer
Carl Stewart
Communicator, Materials Researcher, and CAD Modeler
Page 28 Feb - 5
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CONTACT INFORMATION
Advisors
Jeffrey R. CheskiSteam Turbine EngineeringP11A12, COE Manager(407) 736-4743
Matt Johnston Steam Turbine EngineeringP11A13, Engineer
Lewis Gray Steam Turbine EngineeringP11A13, Fellow Engineer
Project Details
Calvin M Stewart, Steam Turbine EngineeringP11A12, COE Intern(407) 736-4289
Page 29 Feb - 5
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QUESTIONS ?