Flow metering device and method for paste conveying pipeline

A technology for conveying pipelines and flow measurement, which is applied to measuring devices, measuring flow/mass flow, liquid/fluid solid measurement, etc., achieving the effects of good versatility, high precision, and convenient installation

Pending Publication Date: 2016-10-12
HEBEI UNIV OF ENG
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  • Claims
  • Application Information

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Problems solved by technology

Other flow detection methods are still immature in the experimental research stage, and a f

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  • Flow metering device and method for paste conveying pipeline
  • Flow metering device and method for paste conveying pipeline
  • Flow metering device and method for paste conveying pipeline

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Embodiment Construction

[0040] With the development of science and technology, the backlog of coal in the "three ups and downs" can be mined by using the method of filling coal mining. Accurate measurement of the filling volume is a difficult problem. Through the combination of theoretical research and practice, we have designed a device that uses the Doppler principle to measure the filling flow with high precision.

[0041] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with specific drawings and specific embodiments. It should be pointed out that the description and description sequence of the processing circuit in this section are only illustrations for specific implementation, and should not be regarded as limiting the protection scope of the present invention.

[0042] Such as figure 2 Shown is A coupler 1, D coupler 2, E coupler 3, B transmitting pro

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Abstract

The invention relates to a flow metering device and method for paste conveying pipeline and designs a set of optical fiber Doppler sensing system utilizing a fiber grating as a detecting element. The design comprises light source selection, photoelectric detector design, a demodulating device, a signal separation filtering circuit, a voltage amplifying circuit and a signal processing circuit. According to an optical fiber Doppler flow sensor, the scattering effect of solid particles to light and the optical Doppler effect are utilized, an optical fiber is taken as a transmission medium of light, light signal in the medium is demodulated by virtue of paste in the pipeline, the modulation light signal is converted into an electric parameter by virtue of a photoelectric detector, the electric parameter is finally subjected to spectral analysis by virtue of a voltage circuit amplifying circuit and a low-frequency filter circuit, and a measured flow value is obtained through modulation of a processing system, and therefore, the real-time monitoring on the flow of the paste in a filling pipeline is realized.

Description

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Claims

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Application Information

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Owner HEBEI UNIV OF ENG
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