Socket installation structure of refractory article

Patent metadata

Field	Value
Publication number	US-11213886-B2
Application number	US-201816647960-A
Country	US
Kind code	B2
Filing date	Sep 12, 2018
Priority date	Sep 28, 2017
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

A socket installation structure of a refractory article is designed to prevent gas leakage therein. A first flange is provided between an outward end and an inward end of a socket, and a face of the first flange on the side of an inward end thereof is bonded to an article body of the refractory article through a sealing material. Further, a face of the first flange on the side of an outward end thereof faces a metal plate disposed around the outward end or a second flange provided on the side of the outward end, through a low thermally-conductive material layer made of a low thermally-conductive material having a thermal conductivity at room temperature of 40 (W/(m·K)) or less.

First claim

The invention claimed is:

1. A socket installation structure of a refractory article having an article body, comprising:
a socket internally provided with a gas introduction through-hole for introducing gas to an inside of the article body and configured to allow a gas supply pipe to be connected to the gas introduction through-hole; and
a metal plate disposed to surround a part or an entirety of the article body and lie around one end of the socket or the gas introduction through-hole on an outward side of the article body (this end will hereinafter be referred to simply as “outward end”),
wherein the socket has a first flange at a position between the outward end and the other end of the socket or the gas introduction through-hole on an inward side of the article body (this end will hereinafter be referred to simply as “inward end”),
and wherein a face of the first flange on the side of the inward end is bonded to the article body through a sealing material, and a face of the first flange on the side of the outward end faces the metal plate or a second flange provided to the socket on the side of the outward end with respect to the first flange, through a layer made of a low thermally-conductive material having a thermal conductivity of 40 (W/(m·K)) or less at room temperature,
and wherein the metal plate and a part or an entirety of an outer periphery of the socket are joined together.

2. The socket installation structure as claimed in claim 1 , wherein the structure satisfies the following formula 1:
λ≤0.1359 L 2 −0.7849 L+ 1.4793  Formula 1

where L denotes a thickness (mm) of the layer, and λ denotes a thermal conductivity (W/(m·K)) at room temperature of the low thermally-conductive material.

3. The socket installation structure as claimed in claim 2 , wherein the thickness L (mm) of the layer satisfying the formula 1 is a length including a socket axis directional length variation ΔL (mm) which is determined according to an angle θ (degree) of the face of the first flange located on the side of the inward end and in contact with the article body through the sealing material, with respect to an axis direction of the socket, and a length variation Δt (mm) of a thickness of the sealing material between the face of the first flange on the side of the inward end and the article body, in a direction perpendicular to the face of the first flange on the side of the inward end.

4. The socket installation structure as claimed in claim 3 , wherein the ΔL satisfies the following formula 2:
Δ L≤ 5.76×Δ t /sin θ  Formula 2.

5. The socket installation structure as claimed in claim 3 , wherein the ΔL is 23 mm or less, and the L is 43 mm or less.

6. The socket installation structure as claimed in claim 1 , wherein the low thermally-conductive material is a material having a thermal conductivity at room temperature of 2.5 (W/(m·K)) or less.

7. The socket installation structure as claimed in claim 1 , wherein the low thermally-conductive material is a material having a thermal conductivity at room temperature of 0.5 (W/(m·K)) or less.

8. The socket installation structure as claimed in claim 1 , wherein the low thermally-conductive material is air.

9. The socket installation structure as claimed in claim 1 , wherein each of the face of the first flange on the side of the inward end, and a face of the article body in contact with the face of the first flange through the sealing material, has a conical shape which extends from its starting point on an inward side toward an outward side of the gas induction through-hole, at an angle of greater than 0 degree to less than 90 degrees with respect to a central axis of the gas introduction through-hole.

Assignees

• Krosakiharima Corp

Inventors

• Uchida Yuuya
• Itou Hirotaka
• Igawa Yuuji
• Nakamura Hitoshi

Classifications

• B22D41/58 Primary

  with gas injecting means · CPC title

• C21C7/072

  Treatment with gases (C21C7/06, C21C7/064, C21C7/068 take precedence) · CPC title

• B22D1/005 Primary

  Injection assemblies therefor (features relating to gas injection, provided on closures of the sliding gate type B22D41/42; provided on pouring nozzles B22D41/58; provided on closures of the stopper-rod type B22D41/186) · CPC title

• C21C5/48

  Bottoms or tuyéres of converters · CPC title

• B22D11/117

  by treating with gases (B22D11/118, B22D11/119 take precedence) · CPC title