Apparatus and method for measuring unsteady pressures within a large diameter pipe
First Claim
1. An apparatus for measuring at least one parameter of a fluid flowing within a pipe, comprising:
- a spatial array of at least two sensors, disposed at different axial locations along the pipe, and each sensor measuring a parameter within the pipe at each corresponding axial location, each of said sensors providing a signal indicative of a parameter within the pipe at said axial location of a corresponding one of said sensors, each sensor including at least two sensing elements dispose circumferentially at said corresponding axial location; and
a signal processor, responsive to said signals, which provides a signal indicative of the at least one parameter of the fluid in the pipe.
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Accused Products
Abstract
An apparatus 10 is provided that includes a spatial array of at least two unsteady pressure sensors 18-21 placed at predetermined axial locations x1-xN disposed axially along a pipe 14 for measuring at least one parameter of a fluid 12 flowing in the pipe 14. The pressure sensors 18-21 comprise a plurality of pressure sensing elements such as piezoelectric film sensors 23 for measuring unsteady pressures associated with acoustical pressures and/or vortical disturbances. The sensing elements are disposed circumferentially around the pipe and spaced a predetermined distance. The pressure signals P1(t)-PN(t) provided by the pressure sensors 18-21 are processed by a processing unit to provide an output signal indicative of a parameter of the fluid.
193 Citations
40 Claims
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1. An apparatus for measuring at least one parameter of a fluid flowing within a pipe, comprising:
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a spatial array of at least two sensors, disposed at different axial locations along the pipe, and each sensor measuring a parameter within the pipe at each corresponding axial location, each of said sensors providing a signal indicative of a parameter within the pipe at said axial location of a corresponding one of said sensors, each sensor including at least two sensing elements dispose circumferentially at said corresponding axial location; and
a signal processor, responsive to said signals, which provides a signal indicative of the at least one parameter of the fluid in the pipe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An apparatus for determining internal pressure changes of a medium flowing in a pipe, comprising:
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at least one sensor for coupling to an outer surface of a pipe by a coupling arrangement, responsive to radial expansion and contraction of the pipe caused by internal pressure changes of a medium flowing therein, for providing a sensor signal containing information about the radial expansion and contraction of the pipe;
a processor module, responsive to the sensor signal, for providing a processor module signal containing information about the internal pressure changes of the medium flowing in the pipe. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification