JPS6324118Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a protector structure for preventing strip fragments from being caught in a gas blowing cooling device installed in a cooling chamber of a vertical continuous annealing furnace.

(Prior art) A conventional vertical continuous annealing furnace, taking JP-A-56-65935 as an example, has a heating chamber 9 and a soaking chamber 1, as shown in Fig. 4.
0, a cooling chamber 4, an overaging chamber 11, and other independent chambers. The strip 1 is conveyed from the heating chamber 9 to the cooling chamber 4 via the hearth roll 2, where it is subjected to a predetermined heat treatment. In the cooling chamber 4, the strip carried in by the hearth roll 2 is divided into a plurality of vertical columns on both sides. For example, in FIG. Cooling takes place.

(Problems to be Solved by the Invention) A problem with the vertical continuous annealing furnace is strip breakage, and this strip breakage frequently occurs in the cooling chamber 4. The causes of strip breakage vary depending on the shape of the strip being transported, temperature conditions, heat load, etc., and it is extremely difficult to prevent strip breakage. Furthermore, the behavior of the broken pieces in the cooling chamber when the strip breaks is also unknown. Cooling room 4
The broken pieces are located between wind boxes 4-1 and 4-2 and between wind boxes 4-2 and 4-2 shown in FIG.
There was a collision between 1, 4-2 and hearth roll 2. If a strip breaks, the line will be stopped, but as mentioned above, if the strip is jammed, it is not easy to remove the broken pieces from the furnace.

Possible measures to make it easier to remove the fragments include installing a manhole in the cooling chamber shell and pulling out the wind box, but there is no space to install a manhole due to the structure of the cooling chamber. Ducts, dampers, heat exchangers, etc. are crowded around the furnace body, making it impossible to remove the wind box. In addition, it is possible to install a protector between the wind boxes 4-1 and 4-2 to prevent jamming, but due to installation constraints, it is not possible to completely close the gap between the wind box and the protector, and the wind box body It is also impossible to connect a protector considering thermal expansion.

(Means for solving the problem) The present invention is a protector that can be placed between the wind boxes 4-1 to 4-4 provided above and below in the cooling chamber 4 in the vertical continuous annealing furnace shown in FIG. 5, which prevents the strip from getting caught when it breaks.

That is, in the cooling chamber 4 of the vertical continuous annealing furnace, for example, pipes, A protector 5 made of shaped steel or steel plate is arranged. The structure of this protector 5 is as follows:
It is formed into a U-shape with a width smaller than the spacing between the rows of wind boxes 1 and 4-2, and both legs 5-1 thereof have flanges 5-2, forming a square shape. The protector 5 is fixed to the protector support 6, inserted from the side opposite to the gas blowing surfaces of the wind boxes 4-1 and 4-2, and the end face of the protector support 6 is inserted into the support member 7 provided in advance on the cooling chamber furnace shell 3. Fix it with. This fixing is done by attaching the flange part of the protector 5 to the wind box 4-
1, overlap the vertical plane of 4-2.

(Function) As shown in Fig. 1, the present invention is such that the flange portion of the protector 5 is inserted between the wind boxes 4-1 and 4-2 from the opposite side of the gas blowing surface. If the strip breaks, it will not get caught between the wind boxes 4-1 and 4-2, and even if a broken piece of the strip hits the protector 5, it will pass through the protector support 6 to the furnace. The shell can absorb shock. Furthermore, during maintenance, since the protector support 6 is inserted into the support member 7, it can be easily removed.

(Example) FIG. 1 shows a side view of the present invention. Figure 2 is the first
It is an AA arrow view of a figure. In FIGS. 1 and 2, a plurality of window boxes 4-1 and 4-2 are arranged in a row with their gas outlets facing toward the surface of the strip 1 and spaced vertically at a predetermined interval. It is formed into a U-shape with a width smaller than the interval between the wind boxes 4-1 and 4-2, and its legs 5-1 have flanges 5-2 to constitute the protector 5. Attach the support 6 to the
Then, the flange portion 5-2 of the protector 5 is overlapped with the vertical surface of the wind box 4-1, 4-2, and the wind box 4-1, 4- Insert it from the opposite side of the gas blowing surface of 2, and insert it into the cooling chamber furnace shell 3.
By engaging the support member 7 provided in the window, the gap between the window boxes can be completely closed.

In order to make the present invention even more effective, use Hearth Roll 2 and Wind Box 4.
It is preferable to arrange the protector member 8 disposed between -1. FIG. 3 shows this state in a side view. That is, the structure of the protector is formed into a U-shape as shown in FIG. 3, and an inverted L-shaped member 8-1 is fixed to both legs of the protector member 8. It is inserted from the side opposite to the gas blowing surface of -1 and placed between the hearth roll 2 and the wind box 4-1, and is locked to the support member 7 provided on the cooling chamber furnace shell in the same manner as described above. However, the protector 8 may not be provided.

(Effects of the Invention) As described above, by installing the protector of the present invention in the cooling chamber of a vertical continuous annealing furnace, there is no chance of fragments getting caught in the wind box due to a strip breakage, even though the strip breakage occurred. It became. Furthermore, since the strip does not become jammed, industrial effects such as reduction in line stoppage time are extremely large.

[Brief explanation of the drawing]

Fig. 1 is a side view of the protector of the present invention installed between the wind boxes, and Fig. 2 is a side view of the protector of the present invention installed between the wind boxes.
A view taken from arrow A, FIG. 3 is a side view of the protector of the present invention installed between the hearth roll and the wind box, and FIG. 4 is an overall view of a conventional cooling chamber. 1... Strip, 2... Hearth roll, 3...
...Cooling room furnace shell, 4...Cooling room, 4-1 to 4-5...
...Windbox, 5...Protector, 6...
...Protector support, 7...Support member, 8...
...Protector member, 9...Heating chamber, 10... Soaking chamber, 11... Overaging chamber.

Claims (1)

[Claims for Utility Model Registration] A vertical continuous annealing furnace cooling chamber in which a plurality of wind boxes 4-1 and 4-2 are disposed in rows facing the passing strip surface and spaced vertically at a predetermined interval. In this case, the window boxes 4-1 and 4-2 are formed in a U-shape with a width smaller than the interval between the window boxes 4-1 and 4-2.
-1 has a flange 5-2 to form a protector 5, and the flange portion of the protector overlaps the vertical surface of the wind box, and both legs thereof are aligned with the horizontal surface of the wind boxes 4-1 and 4-2. Protector 5 on Wind Box 4-
1 and 4-2, and the protector is locked to a support member 7 provided in the cooling chamber furnace shell 3 via a protector support 6, and the protector 5 prevents the broken strip pieces from getting caught. A protector structure for a cooling chamber of a vertical continuous annealing furnace, characterized in that it is configured as follows.