System and method for supplying fluids to a plasma arc torch
US8283594B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 25, 2010 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | Apr 13, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/3489
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system for supplying fluids to a plasma arc torch includes a single-gas power supply for regulating supply of electrical power to the plasma arc torch and for regulating supply of a first fluid to the plasma arc torch, a flow regulator for regulating supply of a second fluid to the plasma arc torch, and a first pressure-actuated valve disposed between the flow regulator and the plasma arc torch. The pressure-actuated valve shuts off supply of the second fluid to the torch when the first pressure-actuated valve is closed and allows the second fluid to be supplied to the torch when the first pressure-actuated valve is open. The first pressure-actuated valve is structured and arranged to be opened by pressure of the first fluid being supplied to the torch and to be closed when the first fluid is not being supplied to the torch. The system can also include a second pressure-actuated valve in the supply line for the first fluid, which is opened by pressure of the second fluid being supplied to the torch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.