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Molten iron flow velocity detection device based on polarization characteristics

A technology of flow velocity detection and polarization characteristics, which can be used in measuring devices, fluid velocity measurement, velocity/acceleration/impact measurement, etc., and can solve the problem of low detection accuracy of molten iron flow velocity.

Active Publication Date: 2020-07-14
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The molten iron flow velocity detection device based on polarization characteristics provided by the present invention solves the existing technical problem that the accuracy of the flow velocity detection of molten iron flow with high temperature, high speed, and high light is not high

Method used

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  • Molten iron flow velocity detection device based on polarization characteristics
  • Molten iron flow velocity detection device based on polarization characteristics
  • Molten iron flow velocity detection device based on polarization characteristics

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Embodiment 1

[0072] refer to figure 1 The molten iron flow rate detection device based on polarization characteristics provided by Embodiment 1 of the present invention includes a high-speed camera video capture unit 10, a video acquisition unit 20 sequentially connected to the high-speed camera video capture unit 10, a video preprocessing unit 30, and an extremely high light characteristic Displacement field calculation unit 40 and molten iron flow velocity detection unit 50, wherein:

[0073] A high-speed camera video capture unit 10, used to collect high frame rate video stream information of the molten iron flow at the blast furnace taphole;

[0074] The video acquisition unit 20 is used to perform analog-to-digital conversion, storage and compression on the high frame rate video stream information, thereby obtaining a compressed video stream;

[0075] A video preprocessing unit 30, configured to decompose the compressed video stream into time-ordered frame image groups, and extract t...

Embodiment 2

[0120] The molten iron flow rate detection device based on polarization characteristics provided by Embodiment 2 of the present invention includes a high-speed camera video capture unit 10, a video acquisition unit 20 sequentially connected to the high-speed camera video capture unit 10, an integrated video preprocessing unit 30 and a pole The FPGA (Field-Programmable Gate Array Programmable Gate Array) hardware platform of the highlight feature displacement field calculation unit 40 and the multi-DSP hardware platform for integrating the molten iron flow velocity detection unit 50, wherein,

[0121] A high-speed camera video capture unit 10, used to collect high frame rate video stream information of the molten iron flow at the blast furnace taphole;

[0122] The video acquisition unit 20 is used to perform analog-to-digital conversion, storage and compression on the high frame rate video stream information, thereby obtaining a compressed video stream;

[0123] The FPGA hardw...

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Abstract

The invention discloses a molten iron flow velocity detection device based on polarization characteristics. The device comprises a high-speed camera video capture unit; a video acquisition unit, a video preprocessing unit, an extremely highlight characteristic displacement field calculation unit and a molten iron flow velocity detection unit which are sequentially connected with the high-speed camera video capture unit; the video preprocessing unit extracts the extremely highlight features of frame images in the frame image group. The extremely highlight characteristic displacement field calculation unit is used for obtaining a sub-pixel-level displacement field according to extremely high light characteristics. The molten iron flow velocity detection unit is used for obtaining flow rate of molten iron flow according to the sub-pixel-level displacement field, thereby solving the technical problem that the existing detection precision of the flow velocity of the molten iron flow with high temperature, high speed and high light is not high. The invention provides the molten iron flow velocity detection device which can detect the flow velocity of the ultrahigh-temperature, high-speedand high-light molten iron in a severe detection environment, and the molten iron flow velocity detection device is convenient to install and simple and flexible to operate, can adapt to a more severe environment, and has a wide application range of detection objects.

Description

technical field [0001] The invention mainly relates to the technical field of molten iron flow velocity detection, in particular to a molten iron flow velocity detection device based on polarization characteristics. Background technique [0002] In the iron and steel industry, metallic iron is extracted from ores or concentrates by pyrometallurgy under high temperature conditions, and the molten metallic iron and slag flow out from the high-temperature closed blast furnace at high speed. The flow rate of the molten fluid at the blast furnace outlet is an important indicator to characterize the pressure inside the blast furnace and whether it runs smoothly. However, due to the harsh environment inside the blast furnace and the typical "black box" system, it is difficult to measure the pressure change in the furnace by direct detection means. Detecting the flow rate of molten iron at the outlet of the blast furnace can represent the internal pressure of the blast furnace, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P5/22H04N19/85
CPCG01P5/22H04N19/85
Inventor 蒋朝辉周昊徐勇何磊桂卫华李端发刘强肖鹏
Owner CENT SOUTH UNIV
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