Claims
- 1. An apparatus for collecting thermal decomposition products given off into a dynamoelectric machine gas coolant comprising:
- a gas inlet and a gas outlet interconnected by a conduit having a collector disposed therein; said conduit having an inlet solenoid valve upstream from said collector and an outlet solenoid valve downstream from said collector;
- an inlet purge line interconnecting the upstream side of the inlet valve with the downstream side of the outlet valve; said line having a purge solenoid valve therein;
- a collector purge inlet line connected on the downstream side of said inlet valve; and,
- a bypass line having an inlet end connected to the upstream side of said outlet valve and an outlet end connected to the gas outlet;
- an electrical circuit including first and second time delay switches; said first switch normally closed being connected to said purge solenoid valve; and,
- a timer included in said electrical circuit for actuating said inlet solenoid valve and said outlet solenoid valve, said timer being connected to said second switch which is normally open whereby energization of said electrical circuit causes the purge solenoid valve to open immediately and then close after a time delay whereas the normally closed inlet solenoid valve and the outlet solenoid valve are opened after the time delay for a time period set in the timer.
- 2. An apparatus for taking samples of a gas flow comprising:
- a cabinet having a gas inlet and a gas outlet;
- a piping system enclosed within said cabinet for connecting the gas inlet to the gas outlet through a multimedia collector, said collector comprising a manifold having an inlet port and an outlet port;
- a cartridge holder removably mounted in said manifold for retaining a plurality of cartridges which may each have a distinct collecting media, said cartridges being mounted in a parallel relation with respect to the gas flow from the inlet port to the outlet port; said cartridge holder being removable from the manifold without disconnecting the manifold from the piping system;
- an inlet solenoid valve and an outlet valve for collecting the gas sample flow through the collector;
- a purge line connected upstream from said inlet solenoid valve and including a purge solenoid valve; and,
- an electrical circuit connected to said inlet solenoid valve and to said purge solenoid valve including means for sequentially opening and closing said purge solenoid prior to opening and closing said inlet solenoid for sampling.
- 3. A sampling apparatus adapted for connection to a gas-cooled dynamoelectric machine, said sampling apparatus adapted for collecting thermal decomposition products in a gas sample from said dynamoelectric machine, said sampling apparatus comprising:
- a piping system adapted to be connected at an inlet end to said dynamoelectric machine;
- a collector connected in said piping system for receiving a portion of said machine gas coolant, said collector including at least one collector cartridge which may be removed from said collector without disconnecting the collector from said piping system;
- an inlet solenoid valve for controlling the flow of the gas sample to the collector;
- a purge bypass connected upstream from said inlet solenoid valve and including a purge solenoid valve; and,
- an electrical circuit connected to said inlet solenoid valve and to said purge solenoid valve including means for sequentially opening and closing said purge solenoid prior to opening and closing said inlet solenoid valve for sampling.
- 4. The sampling apparatus of claim 3 further including an outlet solenoid valve for controlling the flow of the gas sample out of the collector.
- 5. The sampling apparatus of claim 4 wherein said collector further includes at least one cartridge adapted to collect particulate pyrolysates from the gas coolant and at least one cartridge adapted to collect gaseous pyrolysates from the gas coolant.
- 6. An apparatus for collecting products of thermal decomposition of a dynamoelectric machine from a gas coolant exposed to said products comprising:
- a collector having an inlet port and an outlet port;
- a gas inlet conduit connected to said inlet port, said inlet conduit having an inlet valve therein;
- a gas outlet conduit connected to said outlet port, said outlet conduit having an outlet valve therein;
- purge means for purging the portion of said gas inlet conduit upstream of said inlet valve; and,
- a control circuit for automatically operating said inlet valve and said purge means, said control circuit including a timer connected to said inlet valve, and a time delay relay having a first time delay switch connected to said purge means and a second time delay switch connected to said timer;
- said control circuit when energized providing a sequence of operation such that the first time delay switch causes said purge means to operate for a first preset time interval and then said second time delay switch and said timer cause said inlet valve to open for a second time interval set in said timer.
Parent Case Info
This is a continuation, of application Ser. No. 639,438, filed Dec. 10, 1975 now abandoned.
US Referenced Citations (8)
Continuations (1)
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Number |
Date |
Country |
Parent |
639438 |
Dec 1975 |
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