JPS6121121Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooling device for high-temperature steel that can obtain a uniform curtain film-like cooling water flow and adjust the flow rate of the cooling water.

Cooling high-temperature steel materials to a predetermined temperature is important for improving product quality, and various cooling devices have been used heretofore.

Conventional cooling devices for high-temperature steel materials include, for example,
There is a type of cooling device as shown in FIGS. 1 and 2. In this cooling device, cooling water supplied from a water supply pipe a to a tank b flows out from a nozzle c and flows down to a high-temperature steel material e.

However, in the case of the cooling device, the water supply pipe a
Since the liquid level of the cooling water supplied from the tank B to the tank B fluctuates, the liquid level fluctuates and the amount of cooling water flowing out from the nozzle C changes, making the curtain film uneven.
Also, since it is impossible to adjust the nozzle gap d,
It is not possible to perform optimal cooling according to the type and temperature of high-temperature steel materials.

The present invention has been made with the object of eliminating the above-mentioned drawbacks of the conventional means, making it possible to obtain a uniform curtain film-like cooling water flow, and making it possible to adjust the cooling water flow rate. It is.

Embodiments of the present invention will be described below with reference to the drawings.

Figures 3 to 5 show an embodiment of the present invention, in which rectifying plates 3 and 4 are provided inside a tank 2 extending in the longitudinal direction of a high-temperature steel material 1 in a direction perpendicular to the cross section of the tank 2.
A shim seat 5 is fixed to the front surface of the rectifying plate 4 with a required gap, and a tank side plate 7 is removably attached to the front surface of the shim seat 5 with a bolt 8 via a gap adjustment shim 6. The tank bottom plate tip 9 is bent downward substantially vertically, and the bottom plate tip 9 and the tank side plate 7 form a slit nozzle 10 which has a rectangular cross section and has substantially the same gap at each position in the height direction. The upper part of the baffle plate 3 is lower than the upper end of the side plate of the tank 2 so that the cooling water can overflow,
A flow path 11 through which cooling water flows is provided at the lower end of the current plate 3. Further, a flow path 12 through which cooling water flows is provided at the lower part of the rectifier plate 4. The bottom plate of the tank 2 is arranged on a downward slope toward the slit nozzle 10 side.
This is to prevent water from remaining on the bottom plate when the tank 2 is emptied.

A water supply pipe 13 parallel to the tank 2 is disposed at a required position outside the tank 2, and the water supply pipe 13 and the bottom plate of the tank 2 are communicated with each other through a plurality of nozzles 14, so that cooling water can be supplied from the water supply pipe 13 to the tank 2. do it like this. The water supply pipe 13 can be installed anywhere on the outside of the tank 2, but the water supply pipe 13 is installed at the bottom of the bottom plate of the tank 2.
This is to make the whole compact.

In the figure, 15 is an air vent provided at the top of the tank 2, and 19 is a tank support.

Next, the operation of the present invention will be explained.

The cooling water fed into the tank 2 from the water supply pipe 13 through the nozzle 14 is rectified by the rectifier plate 3, and when the liquid level is lower than the rectifier plate 3, it passes through the flow path 11 and the liquid level is lower than the rectifier plate 3. If the height is higher, some of the current plate 3
A part of the water overflows and passes through the channel 11, is rectified by the rectifier plate 4, passes through the channel 12, and flows down from the slit nozzle 10 as a uniform curtain film of cooling water. The high temperature steel material 1 moving in the direction is cooled to a predetermined temperature.

If the type or temperature of the high-temperature steel material 1 changes and you want to adjust the cooling water flow rate at the same liquid level in the tank, remove the tank side plate 7 from the shim seat 5, change the thickness of the gap adjustment shim 6, and then adjust the flow rate again. Place the tank side plate 7 on the shim seat 5
The gap between the slit nozzle 10 is adjusted to be approximately equal between the upper and lower sides. Therefore, the water flow rectified by the rectifying plate 3 is not disturbed at the slit nozzle 10, and a curtain film-like water flow can be obtained at an optimal flow rate depending on the conditions.

FIGS. 6 and 7 show other embodiments of the present invention. In this embodiment, there is an overflow pipe at the top of the tank 2.
6 is provided, and a gate valve 18 that is opened and closed by a cylinder 17 is provided at the lower end of the slit nozzle 10. With such a configuration, when the cooling water level in the tank 2 falls, the pressure inside the tank 2 becomes negative, so the flow of the cooling water is less likely to be disturbed due to the pressure difference with the atmospheric pressure, and therefore the water level in the tank 2 decreases. Even when the water flow is lowered, a uniform curtain film-like water flow can be obtained. Moreover, when the high temperature steel material 1 is not cooled,
Since the gate valve 18 can be closed by the cylinder 17, wasteful consumption of cooling water can be eliminated. 3rd in the diagram
- Components with the same symbols as those shown in FIG. 5 indicate the same components.

In addition, in the embodiment of the present invention, the case where the high-temperature steel material to be cooled is a pipe has been described, but it can also be used to cool plate materials, the nozzle that connects the water supply pipe and the tank can also be a slit nozzle, and other aspects. Of course, various changes may be made without departing from the gist of the present invention.

According to the cooling device for high-temperature steel materials of the present invention, the cooling water is rectified by the rectifying plate, so there is no ripples on the tank liquid surface, and the rectified cooling water is not disturbed by the slit nozzle, resulting in a uniform curtain film-like water flow. can be obtained.

By changing the gap between the slit nozzles,
It is possible to adjust the amount of cooling water when the liquid level in the tank remains the same. Therefore, optimal cooling can be performed depending on the type and temperature of the high-temperature steel material.

Since water can be uniformly supplied to the tank from the water supply pipe, ripples in the cooling water can be better prevented.

Various excellent effects can be achieved.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of a conventional cooling device for high-temperature steel materials.
FIG. 2 is a view taken in the - direction of FIG. 1, and FIG. 3 is an explanatory diagram of an embodiment of the cooling device for high-temperature steel materials of the present invention.
4 is a view taken in the -direction arrow of FIG. 3, FIG. 5 is a view taken in the -direction arrow of FIG. 4, and FIG. FIG. 7 is a view taken along the - direction arrow in FIG. In the figure, 1 is a high-temperature steel material, 2 is a tank, 3 and 4 are rectifying plates, 6 is a gap adjustment shim, 7 is a tank side plate, 10
11 and 12 are channels, 13 is a water supply pipe, and 14 is a nozzle.

Claims (1)

[Scope of utility model registration request] A slit nozzle having a rectangular cross section and substantially equal gaps at each position in the height direction is formed by a plate connected to the tank side plate and the tank bottom plate to cool the high-temperature steel material by causing a curtain film of cooling water to flow down. A shim is interposed between the tank side plate to be formed and a seat fixed at a predetermined position in the tank for attaching the tank side plate, and the shim is arranged to adjust the gap between the slit nozzles to approximately the same size vertically, and extends vertically into the tank chamber. A cooling device for high-temperature steel, characterized in that a rectifier plate is provided substantially parallel to the longitudinal direction of the slit nozzle.