P17453: Dresser-Rand Valve Test Bench
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Subsystem Build & Test

Table of Contents

February 7th - February 23rd, 2017

Team Vision for Subsystem Level Build & Test Phase

For this phase we plan to have ordered our safety relief valve and our pressure regulator. We also plan to place our MSC, McMaster and 8020 orders so we can begin to test and build. All our parts should be ordered with a possible exception of our isolation pad. We also plan to have completed all our machined parts. We plan to have started working with the DAQ and Signal Express to figure out how to run our solenoid valves. We plan to do a computer-generated input test as well as a depressurized test of opening and closing the valves. As our parts arrive, we plan to begin our subsystem level assembly.

So far, we have figured out how to control the solenoid valves using the hardware and software. We have successfully completed a solenoid relay test using both the function generator and the Signal Express and DAQ. We also pressurized our discharge tank to 90psi as a test. The L brackets were machined to mount the solenoid valves. Our solenoid coil wiring diagram was updated and we created a youtube channel to display our progress videos of testing. We received orders from 8020 and MSC Direct and updated problem tracking. We assembled the 8020 frame with the discharge tank and are working on stability issues. We made progress machining our three major components (via CNC). We tightened our plugs and hose fittings in the discharge tank with Teflon tape.

Discharge Tank

Discharge Tank

Valve Seat Block

Valve Seat Block

Back Pressure Collector

Back Pressure Collector

Test Results Summary

Many of the testing procedures put in place require the use of our poppet valve manifold assembly. We are waiting on the studs that bolt it together, so some of the tests could not be started. We have performed a few of the testing procedures that we were able to do.

Test Procedure for Engineering Requirement 1

Test Procedure for Engineering Requirement 1

We were not able to test the poppet valve pressure tank, but we confirmed that the back pressure tank can hold pressures well above the needed 40 PSI.
Test Procedure for Engineering Requirement 7

Test Procedure for Engineering Requirement 7

The pressure gauge on the wall in the shop read at about 100 PSI. It is higher than we expected, so we may be able to create a 0 - 40 PSI pressure cycle faster than 1 Hz.

Risk and Problem Tracking

Risk Management Revision E

Risk Management Revision E

A working document of our risk management may be found here.
Problem Tracking Revision E

Problem Tracking Revision E

A working document of our problem tracking may be found here.

Functional Demo Materials

A YouTube channel used to display additional testing can be found here.

Weekly progress reports between February 7th and February 23rd can be found here.

Plans for next phase

The primary goal for next phase is to complete the test procedures developed during the design phases of the project. This includes tests to validate the mathematical model of airflow through the system, verify the construction of the poppet valve assembly, and determine how to use the control and data acquisition system using SignalExpress. Additionally, we plan to continuously develop the mounting assembly in order to fit everything in a compact space on the 8020 frame.


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