JPH01317615A - Spray header - Google Patents

Abstract

PURPOSE:To obtain an arbitrary spray pattern in the plate width direction by constituting the title header so that a cross sectional area of each overlapping part of an orifice group of a moving plate and an orifice group of a fixed plate can be changed from the first cross sectional area to zero by moving suitably the moving plate. CONSTITUTION:As for a header body 1 being a hollow body, plural nozzles 7 are arranged at a prescribed pitch. In this state, as for a fixed plate 2, the inside of the body is partitioned by a partition member 4 along the longitudinal direction, and also, the first orifice group 21 having a prescribed cross section area, respectively is provided at a prescribed pitch. Also, as for a moving plate 3, it is brought into contact and engaged so as to be freely slidable along the longitudinal direction of the fixed plate 2, and also, the second orifice group 31 having a prescribed cross sectional area, respectively is provided at a prescribed pitch. Moreover, a driving apparatus 6 is connected to one end of the moving plate 3, and the moving plate 3 can be moved by a prescribed distance along its longitudinal direction. By using a spray header of said constitution, a material and a shape in the width direction of a rolling material can be homogenized, the yield is improved, and also, a cooling liquid can be curtailed.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a cooling water spray header that can provide an arbitrary cooling water spray pattern.

(b) Conventional technology In hot rolling lines for copper strips, controlled cooling is applied to the copper strips after hot rolling in order to make the material of the steel strips uniform and improve the quality of the strips after rolling. .

Generally, variations in material quality and poor shape in the width direction of the copper strip are greater than in the longitudinal direction. This is due to the fact that the controlled cooling of the copper strip is non-uniform in the width direction.

Moreover, when the plate width of the rolled material is changed, cooling according to the plate width is preferable in terms of energy saving.

Various methods have been proposed to adjust the water film width of cooling water spray headers in accordance with the board width. For example, masking trays may be placed near both ends of the swab header to block both sides of the water film. This method requires space for the masking tray and also wastes cooling water.

A method of separately controlling the opening and closing of each nozzle of a spray header has also been proposed. However, this method is not practical because it requires a large number of expensive solenoid valves.

Another method has been proposed in which a partition plate is slidably provided inside the spray header and the amount of water entering the nozzle is restricted by moving the partition plate. This method requires a large amount of space in the width direction of the partition plates in order to move them.

Further, a device has been proposed in which each nozzle of a spray header is provided with a nozzle opening/closing spool, one end of the spool protrudes outside the header, and the nozzles are opened and closed by moving a striker along the header ( (Japanese Unexamined Patent Publication No. 62-6714). This device has M& of each nozzle.
The coffin is complicated, and the construction of the entire header is complicated.

All of the above-mentioned methods and devices only change the spray width of the cooling water, but cannot obtain a desired spray pattern in the strip width direction. Therefore, it is difficult to deal with complex material non-uniformity and shape defects of the steel strip. Can not.

(c) Problems to be Solved by the Invention The problems to be solved by the present invention are to provide a spray header that can obtain an arbitrary spray pattern in the width direction of the plate, thereby saving energy and improving the quality of rolled materials. It's about trying.

(d) Means for Solving the Problems The spray header of the present invention includes a header body in which a plurality of nozzles are arranged at a predetermined pitch, and the inside of the header body is partitioned along the longitudinal direction and has a predetermined cross-sectional area. a fixed plate provided with first orifice groups at a predetermined pitch;
a movable plate provided with a second group of orifices at a predetermined pitch and slidably engaged with each other along the longitudinal direction of the fixed plate and each having a predetermined cross-sectional area; and one side with the fixed plate and the movable plate in between. a member forming compartments in the main body on one side that communicate with each nozzle independently and separately, and a member forming a common chamber in the main body on the other side that communicates with each nozzle in common; It consists of a fluid supply system that supplies fluid and a driving device that moves the moving plate a predetermined distance along the longitudinal direction, and the first and second orifice groups are superimposed on each other so that each nozzle can spray a predetermined spray.・The above problem is solved by providing a pattern.

A plurality of moving plates can also be provided.

The six moving plates, which can be divided into two by cutting the moving plate in the middle and each of which can be connected to a driving device separately, can also serve as a shielding plate that opens and closes the orifice group of the fixed plate.

The first and second orifice groups may have any combination of shapes among circular, rectangular, oval, triangular, and polygonal.

(d) Action By appropriately moving the movable plate, the cross-sectional area of each overlapping portion of the orifice group of the movable plate and the orifice group of the fixed plate changes from the initial cross-sectional area to zero. By varying the cross-sectional area of the overlap of the orifice groups for each position in the nozzle group, a variable spray pattern across the board can be obtained.

(E) Embodiment An embodiment of the cooling water spray header of the present invention will be described with reference to the drawings. First, as shown in FIGS. 1 and 2, the spray header of the present invention includes a header body 1, a fixed plate 2, a movable plate 3, a partition N4, a fluid supply system 5, a driving device 6, and a nozzle 7. is made of.

The header body 1 has a plurality of nozzles 7 arranged at a predetermined pitch. The header body 1 is a hollow body.

In the illustrated embodiment, it is a cylindrical body. The fixed plate 2 is
The inside of the header body 1 is partitioned along the longitudinal direction, and first orifice groups 21 each having a predetermined cross-sectional area are provided at a predetermined pitch.

The movable plate 3 is provided with a second orifice group 31 at a predetermined pitch along the longitudinal direction of the fixed plate 2 so as to be slidably in contact with the second orifice group 31 and each having a predetermined cross-sectional area. The driving device 6 is connected to one end of the movable plate 3 and moves the movable plate 3 a predetermined distance along its longitudinal direction. In the illustrated embodiment, the drive device 6 is a hydraulic cylinder.

In the embodiment shown in FIG. 2A, the orifices 31 of the movable plate 3 overlap the orifices 21 of the fixed plate 2 to change the spray pattern as described below.

On the other hand, in the embodiment shown in FIG. 2(B), the movable plate 3
Since the orifice group 31 of is considerably larger than the orifice group 21 of the fixed plate 2, the movable plate 3
Functions as an opening/closing shield plate.

The partition member 4 forms a compartment 27 that communicates with each nozzle 7 independently and separately in the header body 1 on one side with the fixed plate 2 and the movable plate 3 in between, and in the header body 1 on the other side. A common chamber 17 that communicates with each nozzle is formed therein.

The partition member 4 is preferably connected to the fixed plate 3 from the viewpoint of watertight function. However, due to structural constraints (for example, when there are multiple movable plates 3 as described later), the partition member 4 is preferably connected to the fixed plate 3. The member 4 may be in sliding engagement with the moving plate 3.

The common chamber 17 communicates with each compartment 27 through the overlapping portion of each orifice group 2 and 31. The fluid supply system 5 supplies fluid (eg, cooling water) to the common chamber 17 .

There may be a plurality of moving plates 3. For example, in the example shown in FIG. 7, two movable plates 3 are provided sandwiching the fixed plate 2 from above and below. The movable plate 3 may be cut in the middle to be divided into two parts, and the drive devices 6 may be connected to each part separately (not shown).

The first orifice group 21 and the second orifice group 31, as shown in FIG. L+
, L2 may be different rectangular cross sections (FIG. (B)), or may be oval (C), triangular (D), polygonal (E), or other cross sections.

Hereinafter, for convenience of explanation, the orifice group 21.31 will be described as having a rectangular cross section.

In the example shown in FIG. 4, the orifice group 21 of the fixed plate 2 has a rectangular cross section with a width b, a length a, and a pitch P.

In the orifice group 31 of the moving plate 3, the width b and the length a
, 2a, 3a, 4a are rectangular cross sections with pitch P. The lengths are a, 2a, 3a, 4a, . . . na for nozzles N01.2.3.4, . . . n. however,
When the nozzle NO reaches the center, it is gradually decreased.

In the example shown in FIG. 5, the orifice group 21 of the fixed plate 2 has a width b, a length a, 2a, 3a, 4a, 5a, and 6a.
(Nozzle Nol, 2.3.4.5.6), which has a rectangular cross section with pitch P. The orifice group 31 of the moving plate 3 has a rectangular cross section with width b, length a, 2a, 3a, 4a, 5a, 7a (nozzle NOI, 2.3.4.5.6) and pitch P.

In the example of the shape and arrangement of the orifice groups 2 and 31 shown in FIG. 4, when the movable dragon δ of the movable plate 3 is 0, the length of the overlapping portion of each nozzle is a.

When the moving reed δ=a, the nozzle NOI is completely closed. When δ=2a, nozzle Not,2 is closed. Thereafter, the nozzles are closed one after another (FIG. 8).

In the case of Figure 5, when δ=0, the lengths of the overlapping parts are a, 2a, 3
a, 4a, 5a, and 6a. When δ=a, 0. a,
2a, 3a, 4a, 5a, and so on.

Thereafter, the nozzles are closed one after another (FIG. 9).

In the case of FIG. 6, rectangular orifice groups 21.31 of the same dimensions (b, 4a) are arranged at a pitch PI.

Set R2, R3, Ps to a, 2a, 3a, 4a respectively
They are arranged so as to be shifted from each other (Figure (A)).

When the moving nest δ=O ((Figure A1), the lengths of the overlapping portions are a, 2a, 3a, and 4a, respectively.

When δ=a (Figure (B)), the lengths of the overlapping portions are 0, a, 2a, and 3a, respectively. When δ=2a, ((
C) Figure), the lengths of the overlapped parts are 0.0, a, and 2, respectively.
Become a. This is illustrated in FIG. 9.

In the example shown in FIG. 7, movable plates 3 are stacked one on top of the other with a fixed plate 2 in between.

Moving reed δ electric = 0, δ2 = O (δ is the upper moving plate, δ2
is the lower moving plate), and the lengths of the overlapping parts are a, 2a, 3a, and 4a, respectively. δ+=+
When 4a (+ indicates movement to the right) and δ2=-3a (- indicates movement to the left) (Figure (B)), the lengths of the overlapping portions change to 4a, 3a, 2a, and a, respectively. If such a tendency is illustrated, it will be as shown in FIG. 10.

To summarize the above, by appropriately selecting and combining the cross-sectional shape, dimensions, arrangement pitch, and movable structure of each orifice group 21 and 31 of the fixed plate 2 and movable plate 3, the overlapping cross-sectional area of each orifice group can be arbitrarily set. I can decide. Furthermore, this can be arbitrarily determined for each nozzle position. In this way, the spray pattern for each nozzle can be arbitrarily selected.

For example, as shown in Fig. 11, the spray range of the nozzle in the width direction of the plate can be expanded or contracted depending on the width of the rolled material, or the flow rate of the fluid at both edges of the plate can be adjusted (Fig. 11). )
On the other hand, it is also possible to locally or intermittently limit the spray range in the board width direction (Figure (B)).Going further, the degree of opening and closing of each nozzle can be adjusted to arbitrarily change the amount of water in the board width direction. It is also possible (Figure (C)).

FIG. 12 shows the actual measurement results of the winding temperature of the edge portion of the rolled material when the cooling water spray header of the present invention was installed in a hot rolling line. This shows that the temperature at the edge can be adjusted arbitrarily.

(to) Effect According to the present invention, the following effects can be obtained.

i. The material quality and shape of the rolled material in the width direction can be made uniform.

11. Yield can be improved.

iii. Unnecessary cooling fluid can be saved, resulting in labor savings.

Vi, it is possible to correct complex shape defects in pressure materials.

The spray header of the present invention is applicable not only to a cooling water header, but also for other similar purposes (changing the width direction spray slam) (for example, as a descaling nozzle, etc.).

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of the spray header of the present invention, Fig. 2 is a vertical sectional view of Fig. 1, Fig. 3 is a plan view showing the types of orifices, and Figs. 4 and 5 are orifices. Explanatory diagrams showing the dimensional relationship of the groups, FIGS. 6 and 7, show the orifice 11! , 71 action diagram. 8 to 10-1 are graphs showing the relationship between the overlapping lengths of each nozzle and orifice, FIG. 11 is an explanatory diagram of the spray pattern of the header, and FIG. 12 is an example of the effects of the present invention. Class 7゜1: Header body 2: Fixed plate 3: Moving plate 4: Partition member 5: Fluid supply system 6: Drive device 7: Nozzle 17: Common room 21.31 Niorifice group 27: Compartment room δ: Moving brush a: Length b Double Width p: Pitch Patent Applicant Sumitomo Metal Industries, Ltd. (4 others) Figure 3 (A) (B) (C) (D) (E) Figure 11 + O1 ”a Width M
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Claims (1)

[Claims] 1. A header body in which a plurality of nozzles are arranged at a predetermined pitch, and a first group of orifices that partition the inside of the header body along the longitudinal direction and each have a predetermined cross-sectional area. a fixed plate provided at a pitch; a movable plate provided with a second group of orifices each having a predetermined cross-sectional area at a predetermined pitch; A compartment chamber that communicates with each nozzle independently is formed in the main body on one side with the plate and a moving plate in between, and a common chamber that communicates with each nozzle in common is formed in the main body on the other side. a fluid supply system that supplies fluid to the shared chamber, and a drive device that moves the movable plate a predetermined distance along the longitudinal direction;
and a second group of orifices overlapping each other to provide each nozzle with a predetermined spray pattern. 2. The header according to claim 1, wherein a plurality of said moving plates are provided. 3. The header according to claim 1, wherein the movable plate is cut in the middle and divided into two parts, each of which is connected to a separate driving device. 4. The header according to claim 1, wherein the first and second orifice groups have a combination of shapes selected from circular, rectangular, oval, triangular, and polygonal shapes. 5. The header according to claim 1, wherein the movable plate is a shielding plate that opens and closes the orifice group of the fixed plate.