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Deaeration apparatus

  • US 4,997,464 A
  • Filed: 03/23/1990
  • Issued: 03/05/1991
  • Est. Priority Date: 03/23/1990
  • Status: Expired due to Fees
First Claim
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1. A deaeration apparatus for removing gases from liquids, comprising:

  • an elongated, vertically extending degas vessel of substantially greater height than lateral dimension, having an interior chamber therein, with an upper end and a lower end, said upper end being configured to define an interior volume for collection and venting of gases removed from liquids flowing through the degas vessel, a horizontally aligned inlet port and a horizontally aligned outlet port at a lower portion of the vessel and in flow communication with the interior chamber, and in vertically and laterally spaced-apart relationship to one another, with the inlet port at a higher elevation than the outlet port, and laterally opposite the outlet port, to allow liquid flow through the interior chamber, a vent port communicating with the upper end of said interior chamber, with said interior chamber having a flow director plate mounted therein, extending laterally across the interior chamber, from side-to-side thereof, and vertically upwardly extending in the chamber from the lower end thereof to an upper end at a height above the inlet port, with a first side of the flow director plate facing the inlet port and a second side of the flow director plate facing the outlet port, to provide a liquid flow path therein comprising (i) a substantially 90 degree turn in liquid flow direction of liquid entering the interior chamber, from a horizontal direction to a vertically upward direction, (ii) a substantially 180 degree change in flow direction over the upper end of the flow director plate, from a vertically upward flow on the first side of the flow director plate to a vertically downward flow on the second side of the flow director plate, and (iii) a a substantially 90 degree turn in flow direction from the vertically downward flow on the second side of the flow director plate disengagement of gases from the liquid;

    a vent valve for controlling flow out of the degas vessel through said vent port; and

    means for operating said vent valve to maintain a selected liquid level in said interior chamber, comprising means for sensing liquid level in the interior chamber and generating a signal correlative thereto; and

    means for adjusting the vent valve in response to said signal, such that the vent valve is selectively openable by said vent valve adjusting means in response to said signal, to vent accumulated gas through the vent port and maintain a controlled liquid level in said chamber.

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