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Vaulted roof construction

A vault and structure technology, applied in manufacturing tools, furnace crowns/roofs, glass manufacturing equipment, etc., can solve the problems of inability to obtain energy-saving effects, shortened life of thermal insulation bricks, increased radiant heat, etc., to prevent gas leakage in the furnace, Excellent thermal insulation properties and improved airtightness

Active Publication Date: 2016-03-09
旭硝子セラミックス株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In this way, when the gas in the furnace leaks out of the furnace, the following problems arise: the insulation bricks and ceramic fibers are corroded due to contact with the gas and the life is shortened; the energy saving effect cannot be obtained due to the increase in radiant heat; the environmental load is increased, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0033] As described above, the large vault roof structure of the present invention has: a corrosion-resistant layer formed by arranging a plurality of refractory modules in a dome-shaped manner on the inner side of the glass melting furnace; and an air leakage blocking layer. It has a dense material monolithic refractory material provided on the outer surface of the above-mentioned corrosion-resistant layer so as to cover at least the seam of the above-mentioned refractory module. Specifically, as Figure 1A as well as Figure 1B As shown, the large vault roof structure 1 of the present invention is composed of a corrosion-resistant layer 2 formed in a dome shape and an air leakage blocking layer 3 provided on the outer surface of the corrosion-resistant layer 2 .

[0034]Here, the dome shape refers to a shape formed by pushing the arch shape in the horizontal direction, that is, a so-called semi-conical shape. In this specification, the direction forming the arch (arc) in t...

no. 2 Embodiment approach

[0068] Next, a second embodiment of the present invention will be described. overall structure and Figure 1A and Figure 1B The structure described is the same. Here, refer to Figure 3A and Figure 3B Description has a different Figure 2A and Figure 2B Embodiment of the gas leakage blocking layer 13 with the structure of the gas leakage blocking layer 3 shown. here, Figure 3A and Figure 3B are locally enlarged representations Figure 1A and Figure 1B Cutaway view of the top of the large vaulted roof Construct 1. here, Figure 3A is a cross-sectional view viewed from the longitudinal direction, Figure 3B is a cross-sectional view viewed from the circumferential direction.

[0069] This embodiment differs from the first embodiment in that a layer made of a dense amorphous refractory material 13b is formed on the entire outer surface of the refractory module 2a. In this way, if the entire surface is covered with the dense monolithic refractory material 13b, ...

example 1

[0082] First, the furnace shape of the glass melting furnace and the dome structure are implemented with the following sizes.

[0083] Furnace length about 10m

[0084] Furnace width about 6m

[0085] The radius of the big arch is about 6m

[0086] arch angle 60 degrees

[0087] like Figure 1A and Figure 1B As shown, first, on the inner surface side of the furnace, an electroformed brick module made of alumina (Al 2 o 3 95% by mass) The corrosion-resistant layer 2 was constructed in a dome shape under the above conditions so that 21 refractory modules 2 a were provided in the circumferential direction and 16 in the longitudinal direction. Here, as the electroformed brick module, the planar shape of the outer surface viewed from above was a rectangle with a length of about 600 mm in the longitudinal direction, a length of about 320 mm in the circumferential direction, and a module with a thickness of 250 mm. In addition, since this electroformed brick module is used to...

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Abstract

The present invention provides a crown structure suitable for a glass melting furnace capable of effectively preventing leakage of in-furnace gas also at the glass melting furnace whose in-furnace temperature becomes around 1650°C. A crown structure 1 includes: a corrosion resistant layer 2 aligning and disposing plural pieces of refractory blocks 2a to be a vault shape at a furnace inner side of the glass melting furnace; and a gas leakage blocking layer 3 including plural pieces of heat-insulating blocks 3a disposed at an upper layer of the refractory blocks 2a of the corrosion resistant layer 2, a dense castable refractory 3b provided to cover at least joints of the refractory blocks 2a, and a lightweight heat-insulating castable refractory 3c stacked on the dense castable refractory 3b and provided to embed a space formed by the heat-insulating blocks and the dense castable refractory.

Description

technical field [0001] The present invention relates to a large-vaulted roof structure used in glass melting furnaces, and more particularly to a vault-shaped large-vaulted roof structure in which an air leakage blocking layer including a thermal insulation module is provided on an upper layer of a refractory module. Background technique [0002] Since the glass melting furnace needs to melt glass, the temperature in the furnace is very high. The inner surface side of the furnace wall, ceiling, etc. is made of refractory bricks that are resistant to the temperature in the furnace. Insulated structure prevents the heat inside the furnace from escaping to the outside. [0003] For example, the large arch structure of the following glass kiln is known (for example, refer to Patent Document 1), that is, the upper structure of the melting layer is constructed into a large arch shape with silica bricks of dense material in a conical shape. In order to prevent air leakage, As an a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B5/42F27D1/04
CPCC03B5/42F27D1/0006F27D1/02F27D1/022F27D1/025F27D1/10
Inventor 小野泰史北野正巳难波正一渡边宪加藤田一平
Owner 旭硝子セラミックス株式会社
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