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US 11,311,887 B2Granted
System, method and apparatus for controlling the flow distribution of solid particles
AssigneeGeneral Electric Technology GmbH
InventorsJoseph David Bianca, Paul John Chapman
Life of this patent
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Abstract
A turret includes a generally frusto-conical shaped body and a plurality of static straightening vanes arranged interior to the body, the vanes dividing the body into a plurality of substantially equal sections. The vanes are configured to straighten a swirling flow of solid particles as they enter the body, and to divide the swirling flow into a plurality of straightened flows that are communicated to a plurality of coal outlet pipes.
Claims11
A method for controlling the output of coal in a plurality of coal outlet pipes in a coal pulverizer, the method comprising:
- modifying, or retrofitting, a portion of the coal pulverizer with a turret, the turret comprising:
- a frusto-conical shaped body;
- and
- a plurality of static straightening vanes arranged interior to the frusto-conical shaped body, the vanes dividing the frusto-conical shaped body into a plurality of sections, with each section in fluid communication with one of the plurality of coal outlet pipes;
- extending a feed pipe through the frusto-conical shaped body of the turret, wherein the feed pipe and the frusto-conical shaped body are concentric, and wherein each of the plurality of straightening vanes extends radially from the feed pipe to an inner peripheral wall of the frusto-conical shaped body;
- utilizing the coal pulverizer to grind a supply of raw coal into pulverized coal of a desired fineness that is outputted from the plurality of coal outlet pipes and provided to a boiler;
- and
- controlling the output of coal between each of the plurality of coal outlet pipes with the turret.
5 more elements
A coal pulverizer, comprising:
- a feed pipe configured to receive a supply of raw coal;
- a grinding mechanism configured to transform the raw coal into pulverized coal;
- a classifier configured to receive the pulverized coal from the grinding mechanism and to generate a swirling flow of coal, the classifier being further configured to reject coarse particles of the pulverized coal from the swirling flow;
- a turret arranged above the classifier, the turret having a frusto-conical body and a plurality of static straightening vanes arranged interior to the body, the straightening vanes dividing the frusto-conical body into a plurality of sections, wherein the feed pipe extends through the frusto-conical body, wherein the feed pipe and the frusto-conical shaped body are concentric, and wherein each of the plurality of straightening vanes extends radially from the feed pipe to an inner peripheral wall of the frusto-conical shaped body;
- and
- a plurality of coal outlet pipes in fluid communication with the interior of the turret;
- wherein the plurality of straightening vanes within the turret are in fluid communication with the plurality of coal outlet pipes, wherein the plurality of straightening vanes are configured to straighten the swirling flow of coal as it enters the turret, and to divide the swirling flow of coal into a plurality of straightened flows of coal that are communicated to the coal outlet pipes.
4 more elements
Dependencies are inferred from the claim text.