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Leak detection system

  • US 8,332,130 B2
  • Filed: 09/25/2009
  • Issued: 12/11/2012
  • Est. Priority Date: 09/30/2008
  • Status: Expired due to Fees
First Claim
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1. An injection system comprising:

  • an injector including a first injector outlet including an injection orifice, an injector inlet, and a second injector outlet;

    a check valve in communication with the second injector outlet, the check valve including a closed position for at least partially stopping fluid flow from the second injector outlet;

    a second valve in communication with the injector inlet through a pressure line, the second valve including a closed position for at least partially stopping fluid flow to the injector inlet;

    a pressure sensing device configured for sensing variations in pressure within the pressure line; and

    a controller configured to compare a rate of pressure decrease measured by the pressure sensing device and a predetermined value and determine whether a leak is present on the basis thereof;

    wherein the controller is configured to make the rate of pressure decrease used in the comparison to be a rate measured over a period of time during which the check valve and the second valve are closed.

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