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Impeller capable of preventing ash sticking of converter primary fan

A technology of fan impeller and secondary fan, applied in mechanical equipment, machine/engine, liquid fuel engine, etc., can solve the problems of re-spraying, surface wear, sticking ash, etc.

Inactive Publication Date: 2012-07-04
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] There is another method, which is to spray the anti-sticking ash coating on the whole blade usually. The anti-sticking ash coating generally uses nano-spraying materials, which is expensive, and the method of spraying the whole blade is expensive; the fan impeller not only faces the problem of sticking ash, but also At the same time, it will be accompanied by the problem of blade wear, especially in the areas with high flow velocity such as the windward side of the blade. Surface wear is the main problem.
The whole blade spraying method will immediately encounter the peeling off of the sprayed coating after a period of use, resulting in the problem of re-spraying

Method used

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  • Impeller capable of preventing ash sticking of converter primary fan
  • Impeller capable of preventing ash sticking of converter primary fan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] like figure 1 As shown, a converter primary fan impeller with anti-adhesive dust, the surface of the fan impeller is coated with nano-dust-proof coating 2, and the nano-dust-proof coating 2 is coated on the middle and back section of the leeward side of the blade 1. The middle plate of the impeller 1 is provided with rectifying guide vanes 3 near the inlet of the blades.

[0015] Through the rectifying guide vanes 3, part of the airflow at the air inlet passes through the diversion effect of the small blades to accelerate the flow velocity at the back of the blade 1, so that the airflow rectified by the rectifying guide vanes 3 directly scours the leeward front section of the blade 1, so that the blade 1 is leeward. The front section is not easy to accumulate dust.

[0016] According to the same boundary conditions, the airflow effect of the small blade is recalculated, and the calculation results show that the flow velocity of the leeward front section of the blade is...

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Abstract

The invention relates to a converter primary fan, and particularly relates to an impeller of a converter primary fan. The impeller capable of preventing ash sticking of the converter primary fan is characterized in that the surface of the fan impeller is coated with a nano dust-proof coating, and a straightening vane is arranged near the blade inlet position of a central disc of the impeller. According to the invention, the fan impeller design is optimized, the airflow direction is changed, the airflow speed is increased and the ash sticking amount is reduced.

Description

technical field [0001] The invention relates to a converter primary fan, in particular to an impeller of a converter primary fan. Background technique [0002] The converter primary fan is the key power equipment in the OG method steelmaking system (Oxygen Converter Gas Recovery (Oxygen Converter Gas Recovery) for short OG method), the shutdown of the converter primary fan will lead to the suspension of the entire steelmaking process, so its operating status The quality of the steelmaking system is an important factor affecting the stability, reliability and number of operating cycles of the steelmaking system. [0003] Restricted by the characteristics of the system (wet dust removal), the primary fan of the converter is subjected to severe high-speed gas-liquid-solid phase erosion wear, acid chemical corrosion and reactive solid particle bonding during operation, resulting in corrosion, wear and stickiness of the impeller. Ash. (as shown on the right) [0004] Among the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/28
Inventor 沈聪
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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