JPH08337780A - Oven door frame of coke oven - Google Patents

Abstract

PURPOSE: To produce and oven door frame for a coke oven having a simple structure and resistant to deformation caused by thermal strain. CONSTITUTION: Metallic rods 4 having a thermal expansion coefficient larger than that of the oven door frame are inserted or embedded in the outer half part of both longitudinal side parts 2a, 2b constituting the oven door frame 1 to prevent the thermal strain deformation of both longitudinal side parts of the frame.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coke oven furnace lid frame,
More specifically, it relates to a furnace lid frame having a structure for preventing thermal strain deformation.

[0002]

2. Description of the Related Art A cast iron furnace lid frame is fitted on the extrusion side and fire extinguishing side of each furnace chamber of a coke oven. The inside of the furnace lid frame facing the furnace chamber is exposed to the outside by the heat inside the furnace. Since the temperature becomes significantly higher than that of the other side, the longitudinal portions on both sides are deformed due to thermal distortion in the front view X shape as shown by the chain line in FIG. In addition, since the problem is that the bar lid of the furnace lid is not hooked to the latch of the furnace lid frame, an anti-expansion metal that pulls laterally outward is attached to the middle of the vertically long parts on both sides, or the furnace lid frame is Attempts have been made to prevent thermal strain deformation by making hollow and reducing the temperature difference between the high-temperature side and the low-temperature side of the furnace lid frame by alternating the internal fluid.

[0003]

However, in the method of pulling the intermediate portions of the vertically long portions on both sides of the furnace lid frame outward by the anti-expansion metal product, a large burden is applied to the anti-expansion metal product, causing fatigue and frequent replacement. However, there is a problem that the brick surface of the coke oven is damaged, and the method of making the temperature difference between the high temperature side and the low temperature side by the exchange of the internal fluid as small as possible is troublesome, but the deformation prevention effect is so great. There was a problem that it did not go up.

[0004]

According to the present invention, metal columns having a larger thermal expansion coefficient than the furnace lid frame are fitted or embedded integrally in the longitudinal direction of the outer half of the vertically long parts on both sides constituting the furnace lid frame. , Is to solve such problems.

[0005]

According to the present invention, when the furnace lid frame receives high heat in the furnace chamber and heats up, the metal columns having a large coefficient of thermal expansion, which are fitted or embedded in the outer half portions of the vertically long portions on both sides, have a high inner temperature half. Since the outer half part is pulled in the vertical direction by thermal expansion and expansion to the same extent as the part, thermal strain deformation of the vertically long parts on both sides of the furnace lid frame is prevented.

[0006]

An embodiment will be described below with reference to the drawings.

FIGS. 1 and 2 show a first embodiment in which the vertically long portions 2a and 2b on both sides of the furnace lid frame 1 are square grooves 3a and
3b is provided, and vertically elongated quadrangular metal pillars 4a, 4b formed in the same shape as the rectangular grooves 3a, 3b are fitted and integrated. Metal pillar 4a,
4b is formed of a stainless steel material having a larger thermal expansion coefficient than the cast iron material (FC material) forming the furnace lid frame 1. In addition, 6 is a retaining hole provided at intervals on the inner bottom surfaces of the square grooves 3a and 3b.
Is fitted into the retaining groove 8 provided in the rectangular groove 3a, 3b and the metal pillar 4a,
Make sure that the 4b is fitted and the metal columns 4a and 4b are vertically long.
The inside of 2a and 2b is prevented from sliding.

FIG. 3 shows a second embodiment in which the square grooves 3a and 3b are formed with the upper and lower end portions left, and the metal pillars 4a and 4b are fitted and integrated, and FIG. The metal columns 4a and 4b having a large coefficient of thermal expansion are vertically inserted in the mold, and the furnace lid frame 1
A third embodiment is shown in which the metal columns 4a and 4b are embedded and integrated at predetermined positions in the outer half portions of the vertically long portions 2a and 2b by casting. If projections are provided on the outer surfaces of the metal pillars 4a, 4b to be embedded, or if the surface is formed in a concavo-convex shape, it will be more reliably engaged and integrated with the furnace lid frame 1 formed by casting.

[0009]

As described above, the metal columns 4a and 4b having a coefficient of thermal expansion larger than that of the cast iron material forming the furnace lid frame 1 are fitted to the outer half portions of the vertically long portions 2a and 2b on both sides of the furnace lid frame 1. Since the furnace lid frame 1 faces the furnace chamber 5, the outer half portion of the furnace lid frame 1 having a lower temperature than the inner half portion having a high temperature is pulled vertically by thermal expansion of the metal columns 4a and 4b. As a result, the length of both longitudinal portions is prevented from being distorted and deformed into an X shape when viewed from the front because the inner half portion has substantially the same extension, facilitating the attachment of the furnace lid and eliminating the bar tacks. The effect is that the situation can be prevented.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view showing a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken along the line II-II of FIG.

FIG. 3 is a partially enlarged vertical sectional front view showing a second embodiment.

FIG. 4 is a cross-sectional plan view showing a third embodiment.

FIG. 5 is a diagram illustrating a conventional example.

[Explanation of symbols]

 1 is a furnace lid frame 2a, 2b is a vertically long portion 3a, 3b is a square groove portion 4a, 4b Metal column 5 is a furnace chamber 6 is a latch hole 7 is a latch member 7a is a protrusion 8 is a latch groove

Claims (3)

[Claims] 1. A thermal distortion of the vertically elongated parts on both sides of the furnace lid frame is integrally formed by inserting metal columns having a larger thermal expansion coefficient than the furnace lid frame in the longitudinal direction of the outer half of the vertically elongated parts on both sides. A furnace lid for a coke oven, characterized in that it is prevented from being deformed. 2. A metal pillar having a thermal expansion coefficient larger than that of the furnace lid frame is embedded in the outer half of the vertically elongated parts on both sides of the furnace lid frame so as to be integrated, and thermal strain deformation of the vertically elongated parts on both sides. A furnace lid frame for a coke oven, which is characterized in that 3. A coke oven furnace according to claim 1, further comprising engaging means provided between the vertically long portions on both sides and the metal column having a large coefficient of thermal expansion to prevent sliding movement in the vertically long direction. Lid frame.