Pressure Testing the ROV

Le Wed 01 June 2016

I was finally able to test the ROV in New Zealand Diving and Salvage's decompression chamber. Dissapointingly the ROV leaked at pressure and so there is a need for some redesign for some of this. This page describes the pressure test and presents the results.

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Par Hamish Trolove, Catégorie : Tech Projects

Tags : ROV / Pressure / Seals /

Autres articles

A More Refined Wire Sealing Technique

Le Thu 27 August 2015

I am the first to admit the method for making wire bundle seals for the ROV that I described earlier was pretty ugly. Having made and tested several more seals based on the wax cast epoxy resin plug method, I have refined the technique a little to be a little easier and somewhat more tidy.

Par Hamish Trolove, Catégorie : Tech Projects

Tags : ROV / Pressure / Seals /

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Investigations into Wire Sealing Methods

Le Fri 17 July 2015

I am pleased to say that I have finally managed to come up with a method of getting the bundles of wires through a large cable gland without the water getting through as well. This method has been tested with a 5 bar pressure difference across it to simulate a depth of 50m. The test method is described on the “Pressure Testing Rig for ROV Seals” page. The various test pieces used in this development were all subjected to 5bar pressure and held at that pressure for a minimum of 30 minutes. The successful method makes use of an epoxy resin plug which encapsulates the wires.

Par Hamish Trolove, Catégorie : Tech Projects

Tags : ROV / Pressure / Seals /

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Pressure Testing Rig for ROV Seals

Le Mon 15 June 2015

In order to get the wires from outside the ROv to the inside without the water getting in as well, I am intending to use a proven industrial technique which makes use of Cable glands. The one's I have to hand are rated to 50m, but 100m ones are available too. The challenge is that I intend to run the punches of small wires through an outer sheath that the cable gland will be acting on. I have built the pressure test rig described here to simulate the effect of depths of 50m on the methods I use to seal the smaller wires into the sheath.

Par Hamish Trolove, Catégorie : Tech Projects

Tags : ROV / Pressure / Seals /

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ROV Seals

Le Sat 20 September 2014

One of the signficant challenges in ROVs is making a reliable seal. For this ROV Static Face seals have been designed that will ensure the seal becomes stronger as more external pressure is applied. This page provide the dimensions of the gland on the main shell and the seal size.

Par Hamish Trolove, Catégorie : Tech Projects

Tags : ROV / Pressure / Seals /

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