A Method for Observing Coal Injection in Blast Furnace
A blast furnace coal injection and blast furnace technology, applied in blast furnaces, blast furnace details, furnaces, etc., can solve problems such as large interference, unfavorable installation and use of active cameras, and short service life of active cameras.
Active Publication Date: 2021-05-28
XINXING DUCTILE IRON PIPES CO LTD
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Problems solved by technology
Its disadvantages are: due to the small peeping aperture of blast furnace tuyere, high ambient temperature and large interference, it is not conducive to the installation and use of active cameras, and the tuyere is a vulnerable part in ironmaking, and frequent maintenance, resulting in short service life of active cameras. limited use value
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[0014] Below in conjunction with embodiment the present invention is described in further detail:
[0015] Such as figure 1 and figure 2 Shown, a kind of method of observing blast furnace coal injection situation, described method comprises:
[0016] In step a, an imaging plate facing the peephole of the tuyere of the blast furnace is set up outside the peephole of the tuyere of the blast furnace;
[0017] In step b, the camera module and the imaging board are arranged at an angle between the peep hole of the blast furnace tuyere and the imaging board, and the camera module records the image on the imaging board, and transmits the image to the image acquisition module; in step c, the image acquisition module converts the image is a grayscale image; step d converts the grayscale image into a coal injection image by binarizing the grayscale image, the coal mass in the coal injection image is represented by black, and the rest is represented by white; step e calculates the rat...
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The invention discloses a method for observing blast furnace coal injection, which belongs to the technical field of state monitoring of blast furnace coal injection devices. The method includes: setting up an imaging board facing the blast furnace tuyere peephole outside the blast furnace tuyere peephole; a camera module and The imaging plate is arranged at an angle between the peephole of the blast furnace tuyere and the imaging plate, and the camera module records the image on the imaging plate and transmits the image to the image acquisition module; the image acquisition module converts the image into a grayscale image; The coal injection image is converted into a coal injection image by binarization processing. The coal mass in the coal injection image is represented by black, and the rest is represented by white; calculate the ratio N of the black area to the white area. When N is less than or equal to the set value, the coal gun is blocked. , the present invention distances the camera module from the blast furnace, saves the cooling device of the camera module, reduces the cost, and can judge the state of the coal gun by processing the image on the imaging board, without hindering manual observation of the coal gun in the furnace working condition.
Description
technical field [0001] The invention relates to a method for observing the coal injection situation of a blast furnace, and belongs to the technical field of state monitoring of a blast furnace coal injection device. Background technique [0002] In the actual production of the blast furnace, the water coal workers of the blast furnace often find that the tuyere is blocked, and the coal gun needs to be purged in time to ensure normal coal injection. The analysis found that there are two reasons for the blocked gun: (1) The volatile content of the pulverized coal is too high, and the colloid is layered with black coke, which sticks to the tuyeres and causes the blocked gun; (2) The ash melting point of the pulverized coal is too low, and after the ash is melted, Part of it sticks to the tuyere coal gun, showing off-white slag. If coal gun blockage at the tuyeres cannot be detected and dealt with in time, the actual amount of coal injection at other tuyeres that are not block...
Claims
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IPC IPC(8): C21B5/00C21B7/24
CPCC21B5/003C21B7/24
Inventor 杨广洲金保兰
Owner XINXING DUCTILE IRON PIPES CO LTD