Detailed Design Review Kyle Abbott P14474 Mitch Sedore Brian Brenner Anushka Kalicharan Jake Manley
Agenda ● Valve ● Customer Requirements ○ Coupler ● Engineering ● Pressure Transducers Requirements ● Piping and Fitting ● System Overview ○ Enclosure ● Controller ○ Manifold ● Motor ● Bill of Materials ○ Driver ● Engineering Drawings ○ Encoder ● Schedule ○ Gearbox ○ Motor Mount
System Customer Requirements
System Engineering Requirements
System Overview ● Components: ○ Piping and Fittings ○ Valves ○ Pressure transducers and manifold ○ Motor and motor mount ○ System Controller
Overall Assembly
System Diagram
Ruggedized Data Acquisition Unit with Real Time Operating System
CompactRIO Integrated Systems with Real- Time Controller and Reconfigurable Chassis
Chassis Specifications ● 4 Module Slots ● 400 MHz Processor ● Spartan-6 LX25 FPGA ● 128 MB DRAM ● 256 MB Nonvolatile Storage ● 10/100 BASE-TX Ethernet Port ● RS232 Serial Port
FPGA Specifications ● 24051 Logic Cells ● 38 Multipliers ● 936 KB RAM
Embedded Software Diagram
Analog Input Module NI 9215
Analog Input Module Specifications ● 4 Voltage Inputs ● 100 kS/s per Channel ● Channel Independent Analog to Digital Converters ● 16-bit Resolution ● Built-In Signal Conditioning ● Channel-to-Earth Double Isolation Barrier ● Screw Terminal Connections
Digital Input Module NI 9401
Digital Input Module Specifications ● DSub Connector with Screw Terminal Adapter ● 8 5V/TTL Sinking/Sourcing Bidirectional Digital I/O Ports ● 100 ns Propagation Delay ● 9 MHz Switching Frequency using All 8 Ports as Inputs ● 500 ns Max Input Rise/Fall Time ● ±30 V Max Overprotection on One Channel at a Time
Digital Output Module NI 9472
Digital Output Module Specifications ● 8 Digital Output Channels ● 100 ns Propagation Delay ● 6 to 30V, Current Sourcing Digital Outputs ● Screw Terminal Connections ● 750 mA/Channel
Controller Engineering Requirements
Controller Risk Analysis
Bill of Materials for Rugged DAQ Unit
Motor ● Stepper motor chosen to control valve ○ Requirements: ■ Sufficient torque ■ Water resistant ■ Precise control
Motor: Anaheim Automation NEMA 23Y65 ● IP65 Rated ○ Splash Proof and designed for humid environments ● 175 oz inches max output torque
Torque Requirements ● Based on valve opening torque ○ 10000 PSI = 11 in-lb ■ 176 oz-in ● Taken from manufacturer handbook
Motor: Anaheim Automation NEMA 23
Motor Wiring Diagram
Bipolar Microstep Driver Pack DPY50001
Current Sourcing Driver Pack Wiring
Electrical Specifications
Motor and Control Pin Descriptions
Steps per Revolution Selection Switch Panel Configurations
Output Current Selection via Potentiometer
Gearbox ● 3:1 reducing gearbox added: ○ Finer valve control ■ Standard motor step is 1.8 degrees ● .6 degrees per step with gearbox ● Approximately 4.1 psi/step ○ Increased side loading capability ■ Potential side loading from motor-valve misalignment wears motor bearings ■ Gearbox bearings carry much higher load ○ Increased margin of safety on valve opening torque
Gearbox
Motor Mounting Assembly ● Requirements ○ Support motor weight and torque loads ○ Adjustable installation to accommodate variation in plumbing/valve installation location ○ Ability to transverse along valve stem during opening and closing
Motor Mounting Assembly
Motor Mounting Assembly
Motor Mounting Assembly ● Minimum of ¾ inch freedom in all 3 directions ● Shaft coupler allows for 3 degrees shaft angle misalignment
Motor Mount: Stress Analysis ● Analysis done in Ansys Workbench (V 14.5.7) ● Moment applied to motor flange ● Motor and gearbox weight applied to motor flange ● Fixed supports at linear slide mounts ● Bolt pretensions at support plate ● Material: 6061-T6 aluminum plate ○ 42 KSI Ultimate, 35 KSI Yield
Motor Mount: Stress Analysis Overview
Motor Mount: Stress Analysis Overview
Motor Mount: Stress Analysis Mesh: .050” Element Size
Motor Mount: Stress Analysis Von Mises Stress Results
Motor Mount: Stress Analysis Von Mises Stress Results
Motor Mount: Stress Analysis Von Mises Stress Results
Motor Mount: Stress Analysis Von Mises Stress Results
Motor Mount Stress Analysis ● Results: ○ Majority of part well over F.O.S. of 2 (17.5 KSI) ○ Max stress exceeds F.O.S. of 2 allowable but is in compression ■ Mostly caused by bolt pretension and not component loading
Encoder: ENC-A3I Single-Ended High Resolution w/ Index Channel
Encoder: Engineering Requirements
Encoder: FMEA
Encoder- BOM Part Unit Tax & Company Part Quantity Subtotal Total Number Price Shipping ENC-A3I Single- ENC-A3I- Anaheim Ended High 0400-984- 1 $96 $96 $96 Automation Resolution w/ H-T Index Channel
Valve ● Swagelok IPT series high pressure needle valve ○ 4-5 turns to open ○ 10000 PSIG operating pressure ○ CV value of 5.1 ■ High flow, low pressure drop ● Lowers minimum test enclosure pressure
Valve ● Pressure drop across valve: ○ a ■ Q (gpm), ΔP (psi) ● 11.1 psi pressure drop ○ At 17 gpm max flow
Valve & Motor Requirements
Valve and Motor FMEA
Coupler Selection ● Flex Coupling - 3 degrees ● Clamp on type - provides freedom in mounting and adequate torque
Pressure Transducer Specs ● NIST Certified ● 0-5Vdc ● Stainless Steel ● Life of 10 million cycles ● Accuracy ○ 10,000psi= +/- 0.25% ○ 5,000psi and 1,000psi= +/-0.8% ● Response time of less than 1 millisecond ● 5ft 3 conductor cable ● 5 Point NIST traceable included
Pressure Transducer Sensitivity Calculations ● 0 - 10,000 psi Transducer ○ 1 volt = 2000 psi ○ Accuracy = ± 25 psi ○ Step Voltage = 12.5 mV per 25 psi ● 0 - 5,000 psi Transducer ○ 1 volt = 1000 psi ○ Accuracy = ± 4 psi ○ Step Voltage = 4mV per 4 psi ● 0 - 1,000 psi Transducer ○ 1 volt = 200 psi ○ Accuracy = ± 0.8 psi ○ Step Voltage = 4mV per 0.8 psi
Pressure Transducers- Eng. Reqmts
Pressure Transducer Risk Analysis
Pressure Transducer BOM Unit Tax & Company Part Part Number Quantity Price Subtotal Shipping Total 10,000psi pressure Omega transducer w/ 5' cable PX309-10KG5V 1 $225.00 $225.00 $225 5,000psi pressure transducer Omega w/ 5' cable PX309-5KG5V 1 $225.00 $225.00 $225 1,000psi pressure transducer Omega w/ 5' cable PX309-1KG5V 1 $225.00 $225.00 $225
Piping and Fittings ● 1” XXH Black Pipe ○ Working Pressure ~ 24,000 psi ● Class 6000 Fittings ○ Equivalent to XXH piping ○ x3 Elbows ○ x3 Tees
Working Pressure Calculation Using the following equation: The maximum working pressures were found for various materials. The safety factor used is 2.5, determined by ASME Power Piping code B31.3.
Working Pressure Calculation
Calculations Pressure drop calculations through drain pipe
Piping and Fittings- Eng. Reqmts
Piping and Fittings Risk Analysis
Manifold ● Mounts 3 Pressure Transducers and 1 Digital Pressure Gauge ● 2 Shut-off Valves to Protect Low Pressure Transducers ○ No valve needed for 10,000 psi Transducer
Manifold FMEA and Risk Analysis
Manifold: Stress Analysis ● Analysis done in Ansys Workbench (V 14.5.7) ● 10000 PSI on all wetted surfaces ● Blow-out loads on all threaded joints ● Supports at 1” pipe joints ● Material: 7075-T6 aluminum ○ 70 KSI Ultimate, 59 KSI Yield
Manifold: Stress Analysis ● Setup
Manifold Stress Analysis ● Mesh
Manifold: Stress Analysis Von Mises Stress Results
Manifold: Stress Analysis Stress Peak
Manifold: Stress Analysis ● Results: ○ Majority of part well over F.O.S. of 2 (29.5 KSI) ○ Max stress represents 1.27 F.O.S. ● Recommend development part in 7075 aluminum ○ Ease of machining ○ Cost ● Recommend production part in 15-5 PH stainless steel or equivalent strength stainless alloy ○ Heat treated to ~100 KSI tensile yield or better
Enclosure: Overview ● Protect components from water spray and test part failure ○ Vulnerable components include: ■ Motor ■ Encoder ■ Pressure Transducers
Enclosure FMEA and Risk Analysis
Enclosure: Geometry
Enclosure: Geometry ● Hinged door to allow quick access to transducer shut-off valves
Bill of Materials
Bill of Materials cont.
Bill of Materials cont.
P14474_101
P14474_103
P14474_105
P14474_107
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