| 摘要 |
<p>IMPROVED GAS-TYPE CIRCUIT-INTERRUPTERS HAVING ADMIXTURES OF HELIUM WITH SMALL CONCENTRATIONS OF SULFUR-HEXAFLUORIDE (SF6) GAS An improved gas-type circuit-interrupter is provided utilizing a mixture of helium and sulfur-hexafluoride (SF6) gases, with the percentage concentration of sulfurhexafluoride (SF6) gas being 10%, or less, by volume. The improved gas-type circuit-interrupter of the present invention may be utilized to advantage as a "puffertype" circuit-interrupter, in which relative movement between a piston and operating cylinder takes place for forcing the compressed gas to flow through a suitably-located orifice, or nozzle member, and into intimate engagement with the established arc disposed therein to effect its extinction. Another form of the gas-type circuit-interrupter of the present invention may include a pressurized gasreservoir chamber containing the aforesaid admixture of the helium and sulfur-hexafluoride gases in the proper concentration, that is 10%, or less, by volume, of sulfur-hexafluoride (SF6) gas with the remaining being made up substantially entirely of helium.</p> |
