JPH0715767U - Furnace body structure - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the installation of the furnace lid and improve the working efficiency. In a furnace body structure in which a furnace lid is attached to a furnace body side opening of a furnace top of a vertical continuous annealing furnace, a furnace is inclined toward the inside of the furnace at a predetermined angle A around the furnace body opening, and The inclination angle A is provided around the lid at a predetermined angle B toward the inside of the furnace, and the inclination angle A is provided around the opening of the furnace body and the angle B is provided around the furnace lid.
And A are A <B or A> B.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a furnace body structure in which a furnace lid is attached to a furnace top opening of a vertical continuous annealing furnace.

[0002]

[Prior art]

 In the vertical continuous annealing furnace, the upper part of the furnace body is provided with a predetermined opening for inspecting the inside of the furnace and inspecting the rolls. During normal operation, this opening is fitted with a furnace cover called a top cover, which is sealed so that the gas inside the furnace does not blow out of the furnace. As this sealing method, as shown in Japanese Utility Model Application Laid-Open No. 60-52957, the lining on the furnace body side is formed in an L-shape, and the lining on the furnace lid side is formed into an inverted L-shape. It has been proposed that the inverted L-shaped portion on the side is placed and a sealing device installed around the outside of the furnace body seals the gas in the furnace.

[0003]

[Problems to be solved by the device]

 When trying to place the inverted L shape of the furnace lid side on the L shape of the furnace body side, the furnace lid interferes with the furnace body opening due to thermal deformation of the furnace body side and thermal deformation of the furnace lid side, and it becomes impossible to mount it. Occasionally it happened. In addition, the refractory lined in the furnace to improve the thermal efficiency of the continuous annealing furnace is changed from conventional brick to fiber, and a metal plate is placed on the surface of the fiber to protect the fiber. It's coming. For this reason, the metal plate placed inside the furnace at the opening of the furnace body and the metal plate placed on the inside surface of the furnace lid caused thermal deformation more than ever before, making it more difficult to mount. .

[0004]

[Means for Solving the Problems]

 The present invention forms an inclined surface at a predetermined angle A with the periphery facing the inside of the furnace at the furnace top opening of a vertical continuous annealing furnace, and the periphery of the furnace lid attached to the opening is the inclination of the furnace body opening. An inclined surface is formed at a predetermined angle B so as to face the surface, and the inclination A provided in the opening of the furnace body and the inclination B provided around the furnace lid are placed in contact with each other, and It is characterized in that the relationship between the inclination angle A on the body side and the inclination angle B on the furnace lid side is A <B or A> B.

[0005]

[Action]

 At the furnace top opening of the vertical continuous annealing furnace, the periphery of the furnace body side is inclined at a predetermined angle A. Next, the periphery of the furnace lid placed in the opening is also inclined at a predetermined angle B. This inclination angle is set to A <B or A> B, and the furnace lid is placed on the furnace body opening so that the furnace body inclined portion and the furnace lid inclined portion come into contact with each other. As a result, the contact between the opening of the furnace body and the furnace lid becomes a line contact, and the metal plate on the furnace body side and the metal plate on the furnace lid side can be easily mounted even if they are thermally deformed.

[0006]

【Example】

 FIG. 1 is a side view showing an embodiment of the present invention, FIG. 2 shows an inclined portion of a furnace lid, and FIG. 3 shows an inclined portion of a furnace body side. In FIG. 1, on the furnace body side of the furnace top opening, a fiber 6 lined in a furnace shell 12 and a metal plate 11 are arranged on the surface of the fiber 6 to protect the fiber 6. The upper surface of the furnace body is inclined at a predetermined angle A.

Next, in the furnace lid to be attached to the opening of the furnace body, the fiber 4 is arranged on the lower surface of the furnace lid iron shell 5, and the metal plate 3 for protecting the fiber 4 is arranged on the surface of the fiber 4. ing. Then, the portion mounted on the inclined portion provided in the furnace body around the furnace lid is tilted at a predetermined angle B. At this time, the inclination angle A provided on the furnace body side and the inclination angle B provided on the furnace lid side are defined as A <B or A> B. As a result, the mounting portion of the furnace lid comes into line contact, and the metal plates 3, 11 on the furnace body side and the furnace lid side can be easily mounted even if they are thermally deformed.

[0008]

[Effect of device]

 Conventionally, it took a long time to remove and attach the furnace lid due to the thermal deformation of the furnace body and the furnace lid and the thermal deformation of the metal plate, but this invention makes it possible to easily remove and attach the furnace lid, and to perform maintenance of the furnace body. The work efficiency is greatly improved and the effect is very large.

[Brief description of drawings]

FIG. 1 is a side view of the present invention.

FIG. 2 is a partial detailed view of a furnace lid.

FIG. 3 is a partial detailed view around the opening on the furnace body side.

[Explanation of symbols]

 1 Furnace lid 2 Furnace body 3 Metal plate 4 Fiber 5 Furnace lid iron skin 6 Furnace body fiber 7 Sealing device 8 Sealing material 9 Seal receiving 10 Seal bar 11 Metal plate 12 Furnace body iron skin

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Takeshi Kusue 5-3 Tokai-cho, Tokai-shi Nippon Steel Corporation Nagoya Steel Works

Claims (1)

[Scope of utility model registration request] 1. In a furnace body structure in which a furnace lid is attached to an opening at a furnace top of a vertical continuous annealing furnace, an inclined surface is formed around the furnace body opening at a predetermined angle A toward the inside of the furnace. ,on the other hand,
Around the furnace lid, an inclined surface is formed toward the inside of the furnace at a predetermined angle B so as to face the inclined surface of the furnace body opening, and the inclination angle A on the furnace body side and the inclination angle B on the furnace lid side are formed. A furnace body structure characterized in that the relationship between A and B is A <B or A> B.