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Method and apparatus for leak detection and pipeline temperature modelling method and apparatus

  • US 5,343,737 A
  • Filed: 09/22/1992
  • Issued: 09/06/1994
  • Est. Priority Date: 09/22/1992
  • Status: Expired due to Term
First Claim
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1. Apparatus for detecting a leak in an elongated fluid conducting pipe, said apparatus comprising at least first and second flowmeter means for measuring an amount of fluid per unit time flowing within said pipe;

  • said first and second flowmeter means coupled to said pipe at axially spaced locations with said second flowmeter means being downstream of said first flowmeter means;

    measurement means for determining a total amount of fluid flowing through said pipe at each of said locations for equivalent periods of time;

    comparison means coupled to said measurement means for comparing the total flow amounts at said first and second locations for said equivalent periods of time and for producing a volume difference value; and

    output means operable in response to a predetermined volume difference value from said comparison means, and further comprising means for determining the temperature of fluid at said first and second flowmeter means, and means for correcting the flow amount determined at said second location to compensate said difference value for effects of temperature on the entire pipeline.

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