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US 3,934,454 AGranted
Gas conditioner and analyzer
AssigneeAllis-Chalmers Corporation
InventorStephen G. Simo
Life of this patent
Estimating the term…
Abstract
A portable unit to maintain the dielectric integrity of the sulfur hexafluoride gas of a gas insulated metal-clad substation system without taking the substation out of service. The gas conditioner and analyzer provides the means for achieving the required control of the insulating gas by providing means for measuring the gas temperature, moisture and pressure, removal of moisture and products of decomposition from the gas, and, if necessary, replenishment of the gas.
Claims7
A portable gas conditioner and analyzer for gas insulated substations comprising:
- a two wheeled cart having handle means for facilitating the handling of the gas conditioner and analyzer by a single operator;
- a cabinet mounted on said cart;
- a gas circulator having an inlet side and an outlet side mounted within said cabinet;
- an inlet gas circuit means connected to the inlet side of said gas circulator, said inlet gas circuit means being connectable to the gas insulated substation to provide a gas flow circuit between the substation and said circulator;
- an outlet gas circuit means connected to the outlet side of said circulator, said outlet gas circuit means being connectable to the gas insulated substation to complete a closed gas circuit;
- a first electronic sensor connected to said inlet gas circuit means operable to monitor the moisture content and the temperature of the gas as it flows from the gas insulated substation to said circulator;
- a second electronic sensor connected to said outlet gas circuit means operable to monitor the moisture content and the temperature of the gas as it flows from said circulator to the gas insulated substation;
- a first gas filter in the inlet gas circuit means, said first gas filter being operably disposed to filter the gas prior to said gas flowing to said circulator and after said gas is monitored by said first monitoring means;
- a second gas filter in the outlet gas circuit means, said second gas filter being operably disposed to filter gas directly after the gas leaves said circulator;
- a hygrometer-thermometer supported in said cabinet and having a moisture indicating scale and a temperature indicating scale including a switch normally positioned to connect said hygrometer-thermometer to indicate on one of said scales, said switch being operable when actuated to another position to connect said hygrometer-thermometer to indicate on the other of its scales;
- and,
- individual means operably connecting said first and second electronic sensors to said hygrometer-thermometer.
9 more elements
A portable gas conditioner and analyzer for gas insulated substations comprising:
- a wheeled cart;
- a cabinet mounted on said cart;
- a gas circulator having an inlet side and an outlet side mounted within said cabinet;
- an inlet gas circuit means connected to the inlet side of said gas circulator, said inlet gas circuit means being connectable to the gas insulated substation to provide a gas flow circuit between the substation and said circulator;
- an outlet gas circuit means connected to the outlet side of said circulator, said outlet gas circuit means being connectable to the gas insulated substation to complete a closed gas circuit;
- an inlet solenoid valve connected in said inlet gas circuit means and normally operable to permit gas flow therethrough, said inlet solenoid valve being operable when actuated to block the flow of gas therethrough;
- an outlet solenoid valve connected in said outlet gas circuit means and normally operable to permit the gas flow therethrough, said outlet solenoid valve being operable when actuated to block the flow of gas therethrough;
- a low pressure cutoff pressure switch operably connected in said outlet gas circuit means to sense the pressure of the gas flowing in said outlet gas circuit means, said low pressure cutoff pressure switch being operably connected to said inlet and outlet solenoid valves to automatically actuate said inlet and outlet solenoid valves to block the flow of gas when the pressure of the gas is below a predetermined value;
- a high pressure cutoff pressure switch operably connected in said outlet gas circuit means to sense the pressure of the gas flowing in said outlet gas circuit means, said high pressure cutoff pressure switch being operably connected to said inlet and outlet solenoid valves to automatically actuate said valves when the pressure of the gas flowing in said outlet gas circuit means exceeds a predetermined value;
- a first electronic sensor connected to said inlet gas circuit means operable to monitor the moisture content and the temperature of the gas as it flows from the gas insulated substation to said circulator;
- a second electronic sensor connected to said outlet gas circuit means operable to monitor the moisture content and the temperature of the gas as it flows from said circulator to the gas insulated substation;
- a first gas filter in the inlet gas circuit means, said first gas filter being operably disposed to filter the gas prior to said gas flowing to said circulator and after said gas is monitored by said first electronic sensor;
- a second gas filter in the outlet gas circuit means, said second gas filter being operably disposed to filter gas directly after the gas leaves said circulator;
- a hygrometer-thermometer supported in said cabinet and having a moisture indicating scale and a temperature indicating scale including a switch normally biased to connect said hygrometer-thermometer to indicate on one of its scales, said switch being selectively actuatable to connect said hygrometer-thermometer to indicate on the other of its scales;
- and,
- individual means operably electrically connecting said first and second electronic sensors to said hygrometer-thermometer.
13 more elements
Dependencies are inferred from the claim text.