High-strength aeration cone

Abstract

The invention relates to a high-strength aeration cone. An integral profile is a truncated cone shape, the inner part of the aeration cone is hollow, the upper end and the lower end are opened, the wall thickness is uniform, angles of an upper cone segment, a middle cone segment and a lower cone segment are consistent, the middle segment is a sintering metal powder cellular material, a reinforcing rib capable of sintering and moulding with the sintering metal powder micropore segment is arranged on the outer wall, the sintering metal powder segment and an upper compacting segment and a lower compacting segment are subjected to cold isostatic compaction, and an integral body is directly sintered through high temperature, and the compacting segment is welded with an externally-connected metal structural member according to the requirement. A layer of metal wire is attached on the inner wall of the sintering metal powder micropore segment, the high-strength aeration cone can avoid the uneven stress and decreased intensity due to direct welding of the sintering metal powder micropore segment and the compacting segment, bearing and fatigue loading-resistant capability of the high-strength aeration cone can be greatly increased, once the sintering metal powder micropore segment is damaged, the fragment cannot be introduced into the high-strength aeration cone for obstructing a pipeline and a nozzle, the production efficiency is increased, production cost is reduced, and the operation stability of the high-strength aeration cone is increased.

Description

technical field [0001] The invention relates to a high-strength ventilation cone, which is used in the coal gasification industry to pressurize the bottom of a cone-shaped pulverized coal conveying device and fluidize the pulverized coal to prevent flow channel from being blocked. Background technique [0002] At present, in the ventilation cone used in the coal gasification industry, the microporous section of the sintered metal powder is directly welded to the dense cone section on both sides, and there is no overall reinforcing rib and internal wire mesh, and the gas passes through the sintering cone from the outside of the ventilation cone. The capillary pores inside the metal microporous material enter the inside of the cone, and when the inflatable cone alternately inflates and deflates, the position of the weld bead between the microporous part and the dense part will crack due to uneven stress, thus Break the ventilation cone, and the broken sintered metal powder mic...

AI Technical Summary

Problems solved by technology

[0002] At present, in the ventilation cone used in the coal gasification industry, the microporous section of the sintered metal powder is directly welded to the dense cone section on both sides, and there is no overall reinforcing rib and internal wire mesh, and the gas passes through the sintering cone from the outside of the ventilation cone. The capillary pores inside the metal microporous material enter the inside of the cone, and when the inflatable cone alternately inflates and deflates, the position of the weld bead between the microporous part and the dense part will crack due to uneven stress, thus Break the ventilation cone, and the broken sintered metal powder microporous material fragments will fall into the flow channel, which will block the pulverized coal pipeline and nozzle, resulting in device failure and failure to operate

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