プリズム形インサートによる既設コールバンカーの閉塞防止

綱川 浩

doi:10.4164/sptj.26.328

書誌事項

タイトル別名

The use of a prism-shaped insert to prevent bridges in existing coal bunkers.

説明

A method is described for the design of a prism-shaped insert which is equipped in a rectangular converging hopper over its outlet in order to prevent the formation of a static stable arch in a cohesive powder. The critical span of the static arch is estimated from Jenike's procedure that is modified on the basis of static stresses developed during the initial fill of the hopper, using with results of a fixed volume direct shear test.<br>Safety factors are considered in regard to the size of the hopper outlet and the span of the wedge-type channel constructed around the prism-shaped insert. When the values of the safety factors are given, the optimum dimensions of the prism-shaped insert are determined.<br>A prism-shaped insert of 700mm in width and 2180mm in length is designed in order to initiate the discharge of wet coals from existing rectangular bunkers with a capacity of 640m³ and a hopper outlet of 615mm in diameter. It did so with complete success.

収録刊行物

粉体工学会誌

粉体工学会誌 26 (5), 328-333, 1989

一般社団法人粉体工学会

キーワード

詳細情報詳細情報について

CRID: 1390282679489779712

NII論文ID: 130003951942

DOI: 10.4164/sptj.26.328

ISSN: 18837239; 03866157

本文言語コード: ja

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