Boiler flue bypass flue gas baffle shaft dustproof device
A technology of flue gas baffle and dustproof device, applied in exhaust gas device, valve device, shaft seal, etc., can solve problems such as equipment failure, heavier bypass baffle, and bypass baffle shaft stuck and unable to rotate. , to achieve the effect of reducing operating costs and reducing margins
Inactive Publication Date: 2016-03-23
大唐双鸭山热电有限公司
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- Abstract
- Description
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- Application Information
AI Technical Summary
Problems solved by technology
The most direct manifestation in use is that as the proportion of low-quality coal burned in thermal power plants continues to increase, the ash accumulation on the bypass baffle is gradually aggravated, which eventually leads to the shaft of the bypass baffle being stuck and unable to rotate, which directly affects the baffle. switch, resulting in a series of equipment failures and production accidents
Method used
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Embodiment Construction
[0015] The specific embodiment of the present invention includes a baffle shaft, a protective cover, a dust-proof felt ring, a baffle side bracket, and a dust-proof felt strip. figure 1 , figure 2 , image 3 , the middle part of the baffle shaft 3 is welded to the baffle blade 4, refer to Figure 4 , Figure 5 , the rear end of the protective cover 6 is welded to the baffle blade 4, half of the opening at the front end of the protective cover 6 has wire holes 11, 12, and the other half has light holes 7, 13, and the opening at the front end of the protective cover 6 is fastened with bolts. There is a dust-proof felt ring 5 between the protective cover 6 and the shaft head of the baffle shaft 3, and the outer diameter of the protective cover 6 is fixed with the inner ring of the bearing on the side bracket 8 of the baffle. Refer to figure 1 , Figure 6 , Figure 7 , the two baffle side brackets 8 have the same structure. Take one as an example. The inner diameter of the ...
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A boiler flue bypass flue gas baffle shaft dust preventing device comprises a baffle shaft, a protecting cover, a dustproof felt collar, a baffle lateral support and dustproof felt strips. The middle of the baffle shaft is fixedly welded with a baffle vane. The front end of the protecting cover is provided with an opening. The rear end of the protecting cover is fixedly welded with the baffle vane. Half of the opening is threaded, and the other haft thereof is unthreaded. The opening is fastened through bolts. The dustproof felt ring is disposed between the protecting cover and the head of the baffle shaft. The outer diameter of the protecting cover is matched and fixed with the bearing inner ring of the baffle lateral support. The baffle lateral support is matched and fixed with a bypass flue wall and provided with four bearing holes disposed at equal interval. A bearing outer ring is matched with the inner diameter of each bearing hole of the baffle lateral support. Two sides of the baffle lateral support are provided with grooves matched with the dustproof felt strips. By the dust preventing device, blocking and unsmoothness of a bypass flue gas baffle vane shaft are avoided, part of desulfurized flue gas is effectively prevented from being sucked in a flue gas desulfurizing system or original flue gas is prevented from directly being discharged into a chimney, allowance of the capacity of a booster fan can be reduced, and operation cost of the booster fan is lowered.
Description
technical field [0001] The invention relates to a boiler tail flue desulfurization technology, in particular to a boiler flue bypass flue gas baffle shaft dust-proof device. Background technique [0002] At present, the flue gas baffle door of the tail flue of the coal-fired power plant is an important equipment for entering and exiting the operation of the desulfurization device. and bypass flue gas baffle. [0003] When the desulfurization system is running normally, the flue gas from the tail of the boiler electrostatic precipitator passes through the inlet baffle door of the flue gas desulfurization system to the booster fan, and then is cooled by the flue gas heat exchanger and enters the absorption tower. The flue gas is heated to about 80°C by the flue gas heat exchanger, and enters the chimney through the flue gas baffle door at the flue gas desulfurization outlet. The flue gas desulfurization system is equipped with a bypass flue with a bypass baffle door inside. ...
Claims
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IPC IPC(8): F16K1/226F16K41/10F23J13/08
CPCF16K1/224F16K1/2268F23J13/08
Inventor 王宇
Owner 大唐双鸭山热电有限公司