Measuring and testing – Sampler – sample handling – etc. – Flow divider – deflector – or interceptor
Patent
1989-08-16
1991-05-21
Noland, Tom
Measuring and testing
Sampler, sample handling, etc.
Flow divider, deflector, or interceptor
7386303, 137100, G01N 122
Patent
active
050164821
ABSTRACT:
Disclosed is a method for taking a constantly proportional flowing sample of gas flowing through a line and which is part of measuring and determining the total energy flow, that is, BTUs per minute, of combustible gas flowing through a line such as a pipeline. One method includes taking a continuous sample of the gas flowing through the line which sample is a constant proportion of the gas flowing through the line, and burning the sample in equipment which supplies air to the sample in an amount which maximizes its burning temperature. The flow rate of air which produces the maximum burning temperature of the sample is a flow rate which is directly proportional to the rate of energy flow in the main pipeline. Alternately, the flow rate of air which produces a stoichiometric mixture is directly proportional to the rate of energy flow in the main pipeline. Still further, if an excess of air is flowed to the flame, the amount of excess unconsumed oxygen is also a function of the rate of energy flow in the main pipeline. One or another of these parameters is measured.
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"Orifice Metering of Natural Gas"; American Gas Association (AGA) Report No. 3 (ANSI/API 2530); Mar. 1978; pp. 1-88.
Clingman, Jr. William H.
Kennedy Lyn R.
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