Retractable, electric arc-ignited gas pilot for igniting flare stacks
US5803726A · kind A · utility
Inventor
Key dates
| Filing date | Oct 4, 1996 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Oct 4, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D2900/00014
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A retractable, electric arc-ignited, gas pilot for igniting flare stacks is comprised of an upper support and guide assembly fixed to the upper end of said flare stack. Two guide cables and a pulley are fixed to the upper support and guide assembly. The two guide cables are fixed to a tension beam. The tension beam and a winch are fixed to a winch foundation plate. The winch foundation plate is fixed near the lower end of the flare stack. A draw cable is fixed to the drum of the winch and the draw cable extends to the pulley and is disposed around the pulley wherein the draw cable is fixed to a pilot carriage assembly. The pilot carriage assembly is guided on the guide cables and is raised by the winch and draw cable and is lowered by gravity. The pilot carriage assembly supports a gas line charged with combustible gas and an ignition system comprised of a coil, a high voltage wire, a spark plug and a thermocouple. During normal operating conditions, the pilot carriage assembly remains at the top of the flare stack. Combustible gas is always flowing through the gas nozzle where it is ignited by a spark plug. An ignition coil is energized by the control system every two (2) seconds,…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.