P12412: UV Water Treatment Safety Valve

Actual Test Rig

Actual Test Rig Construction

The actual construction was very similar to the preliminary design. The end test rig, when fully assembled, stands approximately 2.5 m long, 1.25 m wide, and 2.5 m high. Two 6 gallon tanks were used as the upper reservoir and were connected by piping. The water will then descend approximately 1.6 m were it will split for each of the chamber assemblies, see Figure 3 and 4. Since the two chambers are not the same dimensions the piping and mounting structures are costume to each side, but as equal as possible. The water ascends approximately 0.4 meters prior to entering each chamber. It is then allowed to flow freely to the exit were it empties in to orange 5 gallon buckets, which are used as the lower reservoir.

In the preliminary design two switches were described, master power switch and a dimmer switch. In the actual design, these switches were combined into a single dimmer switch that also has a push button on/off feature. This is connected to the outlets that can power the UV chambers and control board. The ballasts for each chamber were relatively small and could be mounted right with each chamber. The ballast also came equipped with their own local switch which gives the technician more control over the independence of each chamber assembly.

Many features were added to aid in the setup and tear down of the test stand. The upper reservoir tower and the UV chamber tower both have four legs that come in contact with the base, and at each of these points there is a single ¼ in bolt. At the base of each upper reservoir tank and before and after the valve assembly there are piping quick disconnects which allow them to be separated from the rest of the structure. The electrical connections consist of two types of connections. First the power supplies connect through standard plug and out let connections. The solenoids and photo-diodes are connected through crimped disconnects. All these features allow for the test stand to be assembled and disassembled in approximately 15 minutes.

Actual Test Rig Picture shown below:


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