Natural gas pipeline safety monitoring key technology based on acoustic pulse compression
A natural gas pipeline, pulse compression technology, applied in pipeline systems, gas/liquid distribution and storage, mechanical equipment, etc., can solve the problems of noise inundation, signal-to-noise ratio decline of reflected signals, spatial resolution and positioning accuracy, etc. Realize the effect of accurate positioning and high positioning accuracy
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[0057] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:
[0058] figure 1 Shown is the overall data acquisition, processing, and analysis flow chart of the present invention. The specific process is: A. Reference signal acquisition; B. Detection signal acquisition; C. Matching filtering processing of reference signal and detection signal; D. Matching filtering After the reference signal and the detection signal extract the envelope; E. The detection signal and the reference signal are enveloped and subtracted; F. The hydrate blockage or pipeline leakage location is realized.
[0059] according to figure 2 As shown, the chirp transmission signal E propagates axially in the pipeline, and when the gas hydrate is blocked or the pipeline leaks, part of the energy will propagate toward the head end in the form of a reflected signal R.
[0060] image 3 Shown is the composition block diagram of the natural gas pipeli...
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