JPS58141310A - Supporting device of structure in top part of blast furnace - Google Patents

Abstract

PURPOSE:To provide high aseismatic property and reduction in weight by fixing a charging device in a furnace top part together with riser pipes erecting at the furnace top to the frame placed or fixed directly on a 4-column tower or on the charging floor fixed thereto. CONSTITUTION:A frame 4 is placed and fixed on a charging floor 3 secured onto a 4-column tower 2, and riser pipes 5 are fixed and supported on the frame 4. The lower hopper 9 of a charging device is fixed and supported thereto. An upper hopper 8 is fixed to the beams 7 which are fixed among the pipes 5. Since the pipes 5 are supported not by themselves but by the frame, there is no need for firm supporing frame bodies, and the reduction in the weight of the pipes 5 is made possible, whereby the entire part of the structure at the furnace top is reduced in weight and the excellent aseismatic structure is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a support device for a top structure of a blast furnace, and aims to provide excellent earthquake resistance and weight reduction.

Conventionally, as supporting devices for the top structure of a blast furnace, there are devices as shown in FIG. 1, FIG. 2, and FIG. 3.

In Fig. 1, a frame d is installed and fixed on a charging floor 3 fixedly installed on a single tower 2, and an upper hopper l and a lower hopper 9 of the charging device are fixedly supported on this frame e. The riser pipe S standing upright at the top is fixedly supported by a strong frame t fixed on the charging bed 3.

Further, an expandable tube lθ at the lower part of the riser tube that absorbs expansion and contraction of the furnace body l due to thermal changes in the blast furnace is built into this frame body B.

In addition, in FIG.
The upper hopper l and the lower hopper 9 of the charging device are fixedly supported on a beam 7 fixedly installed between the riser pipes 5. The telescopic pipe 10 at the bottom of the rising pipe! /Same as the figure.

In any of the above-mentioned devices, a large blast furnace has a length of 50 m.
The riser pipe, which is also nearby, is a self-supporting structure, and in order to stably support it, the riser pipe structure needs to be strong, including the support frame, which increases the weight of the furnace top structure. Therefore, it becomes seismically unstable. In addition, the space above the charging floor is narrow, making it difficult to perform daily inspections of the expandable pipes and to replace Jl12.

The present invention solves these problems and achieves excellent earthquake resistance and weight reduction.

That is, in the present invention, a frame is mounted and fixed directly on the v-shaped turret or on a charging floor that is fixedly installed, and this frame has a rising pipe that stands upright on the top of the furnace, and a charging device that is installed on the top of the furnace. This is a support device for a top structure of a blast furnace, characterized in that it is fixedly installed.

FIG. J, FIG. 6, and FIG. 7 show embodiments according to the present invention. These will be explained in detail below with reference to the drawings.

In Fig. 3, a framework is placed and fixed on a charging floor 3 fixed on the main turret 2, and a rising pipe j is fixedly supported on this framework, and a lower hopper 9 of the charging device is installed. Fixed support. The upper hopper l is fixedly supported on a beam 7 fixedly installed between the riser pipes 5.

In addition, in Fig. 7, the charging bed 3 fixedly installed on the main turret λ
Place and fix the frame on top, and attach the rising pipe to this frame! It also fixedly supports the upper hopper l and lower hopper 9 of the charging device.

As mentioned above, according to the present invention, the riser pipe is not supported independently but has a frame support structure, so there is no need for a strong support frame, and the weight of the riser pipe can be reduced, resulting in a reduction in the weight of the entire furnace top structure. It has a structure with excellent earthquake resistance. In addition, the space on the charging floor has become wider, and the lower expansion and contraction of the riser pipe is not covered, making daily inspection and replacement of the furnace top equipment extremely easy.
Combined with the former effect, cost reduction can be achieved.

[Brief explanation of drawings]

Figures 1 to 3 show a conventional supporting device for a top structure of a blast furnace. The front view of the conventional example, Figure 3A is
- A plan view as viewed from A, FIGS. 3 to 7 show an embodiment according to the present invention, FIG. 3 is a front view, FIG. FIG. 3 is a front view of the embodiment. L... Blast furnace main body, K... Sanmoto turret, 3... Charging floor,
q...frame! ... Ascending pipe, t... Frame body, 7...
- Beam, l...Charging device (upper hopper), 9...Charging device (lower hopper), 10...Rising pipe lower expansion pipe. 1lS1 Figure Section 3 Figure 1, 41-, I. Figure 5 A; 71〈

Claims (1)

[Claims] A frame is mounted and fixed directly on the main turret or on a charging floor that is fixedly installed, and a riser pipe that stands upright at the top of the furnace is fixed to this frame, and a charging device installed at the top of the furnace is installed. A support device for a top structure of a blast furnace, characterized in that it is fixedly installed.