Equalizing regulation device of boiler coal powder
A balanced adjustment device and pulverized coal technology, which is applied in the direction of block/powdered fuel preparation, combustion method, combustion equipment, etc., can solve the problems such as unsatisfactory adjustment effect of the coal mill distributor and inability to adjust the fineness of coal pulverization
Active Publication Date: 2015-08-26
BEIJING NEW LEAF ENERGY TECH
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Problems solved by technology
The device has achieved certain effects on the pipeline distributor, but the adjustment effect on the coal mill distributor is far from ideal
And the fineness of coal powder cannot be adjusted
Method used
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[0022] The principle structure and specific implementation methods of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0023] figure 1 It is a schematic diagram of the structure of the boiler pulverized coal balance adjustment device and its installation position in the distributor. The device contains a plurality of adjustment units 1, and the plurality of adjustment units are respectively arranged between the outlet pipes 3 of the distributor; each adjustment unit includes The adjustment plate 6, the outer adjustment plate 5, the inner adjustment shaft 8 and the outer adjustment shaft 7; the inner adjustment shaft 8 and the outer adjustment shaft 7 are coaxially arranged, and the two shafts are installed and fixed through the middle support 9 and the end support 4, and the middle The support 9 and the end support 4 are respectively installed on the distributor 2 and the coal drop pipe 11; the inner adjustment plate 6 is...
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An equalizing regulation device of boiler coal powder is used for the direct firing pulverizing system of thermal power plants. The device comprises a plurality of regulating units, wherein the plurality of regulating units are respectively arranged between distributor outlet pipes; each regulating unit comprises an inner regulating plate, an outer regulating plate, an inner regulating spindle and an outer regulating spindle; each inner regulating spindle and the corresponding outer regulating spindle are coaxially arranged; each inner regulating plate is arranged on the corresponding inner regulating spindle; each outer regulating plate is arranged on the corresponding outer regulating spindle; each inner regulating plate comprises an upper part and a lower part which are positioned on the same plane, and each outer regulating plate comprises an upper part and a lower part which are positioned on the same plane; each inner regulating plate and the corresponding outer regulating plate are arranged in zones with different coal powder concentration and fineness and can be used for adjustment independently. By regulating the angles of the two regulating plates, the device can realize the equalizing regulation of coal powder quantity and coal powder fineness, and original air volume regulation cannot be affected during the regulation of coal powder quantity.
Description
technical field [0001] The invention relates to a boiler pulverized coal balance adjustment device, in particular to a pulverized coal balance adjustment device suitable for a direct-blown pulverization system of a thermal power plant. Background technique [0002] Most of the modern large boilers adopt the direct blowing pulverizing system. Usually, each coal mill needs to provide primary air to one burner layer of the boiler, and each burner layer usually has 4, sometimes even 8 burners. The function of the pulverized coal distributor is to evenly distribute the pulverized airflow after the coal mill has been ground to several primary air pipelines and burners. Its performance plays an important role in the safe and economical operation of burners and boilers. [0003] The unbalanced air-to-powder ratio among the various pulverized coal pipelines will cause many problems. When the proportion of wind-coal in the pulverized-coal pipeline is lower than the design value, it w...
Claims
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IPC IPC(8): F23K1/00
Inventor 熊健张潇元
Owner BEIJING NEW LEAF ENERGY TECH