CN218310037U

CN218310037U - Device for reducing water flow of hot-rolled laminar flow edge

Info

Publication number: CN218310037U
Application number: CN202221981350.7U
Authority: CN
Inventors: 曲晓东; 于斌; 景鹤; 张守峰; 沈强; 史乃安; 孟凡志; 李向科; 赵博; 宛春辉
Original assignee: Angang Steel Co Ltd
Current assignee: Angang Steel Co Ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2023-01-17
Anticipated expiration: 2032-07-29

Abstract

The utility model relates to a device for reducing the water flow at the edge of hot rolling laminar flow, which comprises a guard plate and a side water spray pipe, wherein the guard plate and the side water spray pipe are arranged oppositely, the guard plate is composed of a plurality of single plates, each single plate is composed of an L-shaped plate and a straight plate, and the L-shaped plate is in arc transition connection with the straight plate; the side water spray pipes are divided into a plurality of groups, and the included angle between the water spray direction of the side water spray pipes and the running direction of the strip steel is 10-80 degrees or 100-170 degrees. The advantages are that: simple structure, the backplate adopts the integrated configuration of a plurality of veneers, can make the cooling water flow away fast by the passageway that forms between the veneer, reduces limit portion and deposits water, prevents steel sheet surface ponding, and in addition, the veneer adopts the curved surface structure, and the cooling water reduces the cooling water along the veneer outflow and rebounds to the water yield on belted steel surface, improves hot rolling belted steel production line width temperature homogeneity, has improved belted steel transverse stress distribution, improves the stability of plate shape control.

Description

Device for reducing water flow of hot-rolled laminar flow edge

Technical Field

The utility model discloses hot rolling belted steel production field especially relates to a reduce device of hot rolling laminar flow limit portion discharge.

Background

During the production process of hot-rolled strip steel, the research on the consistency of the performance and the appearance of the strip steel is focused by laminar cooling, and on the aspect of longitudinal plate shape control, because the difference of upper and lower cooling water quantities is overlarge, the cooling capacity of the lower part of the strip steel is relatively weaker, after the strip steel is discharged from a finish rolling zone and rapidly passes through a laminar cooling zone, the strip steel transversely forms a pot bottom shape buckling defect with a low middle and two high sides, and more water is accumulated in the middle. Referring to fig. 1, the originally designed laminar flow vertical guard plate is easy to store water at the edge, side water spray cannot be blown off at all, or the blown water sprays to the edge of the guard plate and rebounds to the edge of the strip steel, so that the edge of the strip steel is seriously watered, uneven cooling is caused, and especially the edge cooling is more severe, so the buckling of the strip steel is aggravated.

Disclosure of Invention

For overcoming the deficiencies of the prior art, the utility model aims at providing a reduce device of hot rolling laminar flow limit portion discharge reduces the ponding that the side water spray rebounded to belted steel limit portion and causes effectively, increases the traffic flow of cooling water simultaneously, makes the cooling water flow away fast.

In order to achieve the above object, the utility model discloses a following technical scheme realizes:

a device for reducing water flow at the edge of a hot-rolled laminar flow comprises a protective plate and a side water spray pipe, wherein the protective plate and the side water spray pipe are arranged oppositely, the protective plate is composed of a plurality of single plates, each single plate is composed of an L-shaped plate and a straight plate, and the L-shaped plate is in arc transition connection with the straight plate; the side water spray pipes are divided into a plurality of groups, and the included angle between the water spray direction of the side water spray pipes and the running direction of the strip steel is 10-80 degrees or 100-170 degrees.

The side water spray pipes spray in groups.

The L-shaped plate comprises a vertical plate and a horizontal plate, and the L-shaped plate is formed by arc transition from the vertical plate to the horizontal plate.

The single plates are arranged at equal intervals.

The linear plates are arranged in a straight line.

Each group of side water spraying pipes comprises a middle pipe and side pipes, the side pipes are symmetrically arranged by taking the middle pipe as a symmetry axis, an included angle between each side pipe and the middle pipe is an acute angle, and the middle pipe is perpendicular to the running direction of the strip steel.

Compared with the prior art, the beneficial effects of the utility model are that:

reduce device simple structure of hot rolling laminar flow limit portion discharge, the backplate adopts the integrated configuration of a plurality of veneers, can make the cooling water flow away fast by the passageway that forms between the veneer, reduce limit portion and deposit water, prevent steel sheet surface ponding, in addition, the veneer adopts the curved surface structure, the cooling water flows along the veneer and reduces the cooling water and bounce-back to the water yield on belted steel surface, improve hot rolling belted steel production line board width temperature homogeneity, the distribution of belted steel transverse stress has been improved, improve the stability of plate shape control. The utility model discloses alleviate belted steel overall length inhomogeneous problem of stress effectively, solved limit portion buckling problem, improved the flatness of steel sheet.

Drawings

Fig. 1 is a schematic structural diagram of an original laminar flow roller way protection plate.

FIG. 2 is a schematic view showing the structure of an apparatus for reducing water flow at the edge of a hot rolled laminar flow.

In the figure: 1-original guard plate 2-side spray pipe 3-L type plate 4-straight plate 5-middle pipe 6-side pipe.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.

Referring to fig. 2, the device for reducing the water flow at the edge of the hot-rolled laminar flow comprises a protective plate and a side water spray pipe, wherein the protective plate and the side water spray pipe are arranged oppositely, the protective plate is composed of a plurality of single plates, each single plate is composed of an L-shaped plate 3 and a straight plate 4, and the L-shaped plate 3 is in arc transition connection with the straight plate 4; l template 3 includes vertical board, horizontal plate, and L template 3 is formed to the circular arc transition of horizontal plate by vertical board, makes things convenient for the smooth outflow of cooling water, avoids the cooling water bounce-back.

The side water spray pipes are divided into a plurality of groups and adopt an oblique jet type, the included angle between the water spray direction of the side water spray pipes and the running direction of the strip steel is 10-80 degrees or 100-170 degrees, and the arrangement structure has wider spray angle, large range and no dead angle. Each group of side water spraying pipes comprises a middle pipe 5 and side pipes 6, the side pipes 6 are symmetrically arranged by taking the middle pipe 5 as a symmetry axis, the included angle between each side pipe 6 and the middle pipe 5 is an acute angle, and the middle pipe 5 is vertical to the running direction of the strip steel.

Side water spraying pipes control spraying in groups, and side water spraying is set in front of and behind a collecting pipe for laminar flow set water spraying; the side spray pipe spray switch depends on whether the laminar flow header is flowing.

Wherein the linear plates 4 are arranged in a line. Further, the single plates may be arranged equidistantly.

Examples

Reduce device of hot rolling laminar flow limit portion discharge, including backplate, side spray pipe, the backplate sets up with side spray pipe relatively, and the backplate comprises a plurality of veneers, and the veneer comprises L template 3, a word board 4, and the interval between a word board 4 is 60mm, and backplate structure and size are seen in figure 1 and table 1.

TABLE 1 Allocation of parameters

Determining the opening number of side water spray pipes according to the input number of each group of laminar flow watering collecting pipes above the corresponding strip steel, and formulating the following control scheme:

1. when the thickness of the strip steel is less than or equal to 5.0 mm:

1) The side water spray pipes are sequentially provided with 1# -15# groups along the running direction of the strip steel, and according to the input number of each group of laminar flow watering collecting pipes, if the number of feedback water valve opening arranged on the transmission side of each group of laminar flow watering collecting pipes is less than or equal to 3 rows, the front side water spray pipe and the rear side water spray pipe automatically open the 2# groups;

2) When the feedback water valve opening number is more than 3 rows in the closing state of the reverse water injection, the front and rear water injection automatically opens the 1# and 3# groups.

2. When the thickness of the strip steel is more than 5.0 mm:

1) According to the input number of each group of laminar flow watering collecting pipes, if the number of feedback water opening valves is less than or equal to 3 rows, the front side and the rear side are sprayed with water to automatically open the 1# group and the 3# group;

2) Under the state that the reverse water injection is closed, if the feedback water valve opening number is more than 3 rows, the front side water injection and the rear side water injection automatically open the 1#, 2#, and 3# groups.

Claims

1. A device for reducing water flow at the edge of a hot-rolled laminar flow is characterized by comprising a protective plate and a side water spray pipe, wherein the protective plate and the side water spray pipe are arranged oppositely, the protective plate is composed of a plurality of single plates, each single plate is composed of an L-shaped plate and a straight plate, and the L-shaped plate is in arc transition connection with the straight plate; the side water spray pipes are divided into a plurality of groups, and the included angle between the water spray direction of the side water spray pipes and the running direction of the strip steel is 10-80 degrees or 100-170 degrees.

2. The apparatus as claimed in claim 1, wherein the side water spray pipes spray in groups.

3. The apparatus of claim 1, wherein the L-shaped plates comprise vertical plates and horizontal plates, and the L-shaped plates are formed by arc transition from the vertical plates to the horizontal plates.

4. The apparatus according to claim 1, wherein the plates are equidistantly spaced.

5. The apparatus as claimed in claim 1, wherein the linear plates are arranged in a straight line.

6. The device for reducing the water flow at the edge of the hot rolled laminar flow according to claim 1, wherein each group of side water spraying pipes comprises a middle pipe and side pipes, the side pipes are symmetrically arranged by taking the middle pipe as a symmetry axis, an included angle between each side pipe and the middle pipe is an acute angle, and the middle pipe is perpendicular to the running direction of the strip steel.