KR101566771B1 - Apparatus for protecting nozzle - Google Patents

Abstract

The present invention relates to a nozzle protecting device positioned on a bottom part of a material and protects a lower nozzle, wherein a lower nozzle sprays fluid to the material. The nozzle comprises: a covering unit arranged on a top part of the lower nozzle covering the lower nozzle; and a guide unit arranged at least on one side of the lower nozzle, and a covering unit supporting at least one side providing a moving route of the covering unit. As such, the covering unit completely blocks a foreign substance from the nozzle, and provides an effect of preventing pollution and blocking of the lower nozzle.

Description

[0001] APPARATUS FOR PROTECTING NOZZLE [0002]

The present invention relates to an apparatus for protecting a nozzle, and more particularly, to a nozzle protecting apparatus for preventing a lower cooling water nozzle from being clogged by foreign matter or the like, which is located between transfer rolls of an accelerating cooling facility in a rolling process Field.

In a steel manufacturing process, a slab is rolled and then produced as a thick plate having a desired thickness.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing equipment involved in a rolling process in a steel manufacturing process; FIG.

As shown in Fig. 1, the material 1 referred to as a slab is heated through a heating furnace 10, passed through a rolling mill 20, and made into a thick plate.

The material 1 having passed through the rolling mill 20 passes through the accelerating cooler 30 and is subjected to a cooling process. Thereafter, the material 1 is rolled through a hot-

1 is provided with an upper nozzle 32 and a lower nozzle 31. A low pressure water (3 to 5 kg / cm) quench pipe is connected to the nozzles 31 and 32, The cooling nozzles 31 are arranged between the transfer rolls 2 so as to discharge the cooling fluid from the material 1 to the surface of the passing material 1, So that the lower nozzle 31 is clogged.

FIG. 2 is a conceptual diagram showing that a foreign matter penetrates into a lower nozzle of the accelerator cooler. FIG.

2, the fluid ejected from the lower nozzle 31 falls on the lower surface of the work 1 without collapsing after colliding with the work 1. On the other hand, A large amount of cooling water accumulates on the upper surface of the work 1 and stays there. In this way, the cooling water containing the dust is contained in the cooling water which is present on the upper surface of the work 1, and the cooling water containing the dust is discharged from the rear end to the lower nozzle 31 A phenomenon that a concentrated drop occurred occurred.

2, the clogged lower nozzle 31 has a cooling efficiency different from that of the cooling fluid injected by the upper nozzle 32, so that the upper surface of the material 1 The asymmetry of the cooling efficiency of the lower surface causes a bending phenomenon of the material 1. [

Prior art related to the accelerating cooler related to the rolling process includes "steel plate cooling apparatus (application No. 10-2007-0113289),""spray nozzle clogging prevention apparatus (application No. 10-2000-0072310)" or " (Patent Application No. 10-2010-0020447) "which has a function of preventing the clogging of the injection nozzle.

The nozzle protecting device according to the present invention is devised to solve the above-mentioned problems of the prior art. The nozzle protecting device according to the present invention is a device for preventing foreign substances or other fluids from reaching a nozzle located at a lower portion of a material and causing the lower nozzle to be contaminated and clogged by foreign substances .

The solution of the present invention is not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

The nozzle protection device according to the present invention has the following problem solution for solving the above problem.

The nozzle protection device according to the present invention is a device for protecting a lower nozzle located at a lower portion of a workpiece and spraying a fluid toward a workpiece, the covering device comprising: a covering unit provided on an upper portion of the lower nozzle to cover an upper portion of the lower nozzle; And a guide unit disposed on at least one side of the lower nozzle to support at least one side of the covering unit and to provide a path through which the covering unit is moved.

The covering unit of the nozzle protecting device according to the present invention includes a cover for covering an upper portion of the lower nozzle; And a bridge which is provided on both sides of the cover, supports the cover, and is transported along the guide unit.

The covering unit of the nozzle protecting device according to the present invention may further comprise a plurality of rolls provided on the lower side of the bridge and rolling on the guide unit as the bridge is transported along the guide unit have.

The guide unit of the nozzle protection device according to the present invention is provided with a rail part provided below the covering unit and forming a conveyance path of the covering unit; And a side plate formed along an outer surface of the rail to guide the covering unit to move along the rail portion.

The nozzle protecting apparatus according to the present invention may further comprise a towing unit provided on one side of the covering unit and pulling the covering unit to be transported along the guide unit.

The towing unit of the nozzle protection device according to the present invention may include: a towing bar connected to one side of the covering unit; And a cylinder connected to the towing bar and generating a power to be supplied for conveying the covering unit by elongation and contraction of the length.

The nozzle protection apparatus according to the present invention may further include a buffering unit provided on a lower surface of the cover to protect the cover from the fluid sprayed by the lower nozzle.

The buffering unit of the nozzle protection device according to the present invention may include a material for sucking the fluid.

The nozzle protection device according to the present invention includes: a material detection sensor disposed at one side of a material to detect the material; And a control unit for receiving the detection of the material from the material detection sensor and for controlling the towing unit according to the presence of the material.

The control unit of the nozzle protection apparatus according to the present invention may control the towing unit so that the covering unit covers the lower nozzle when the member of the material is recognized.

The guide unit of the nozzle protection device according to the present invention is formed to have a length corresponding to the length of the lower nozzle and the covering unit is divided into two sections, And a plurality

The one point of the nozzle protection device according to the present invention is a center portion from both ends of the guide unit, and the covering unit is arranged so that, when the covering unit opens the lower nozzle, And when the covering unit closes the lower nozzle, the cover unit moves in mutually opposite directions from both ends of the guide unit, and is in contact with each other at the center of the guide unit.

The nozzle protection device according to the present invention having the above-described configuration has the following effects.

First, the covering unit protects the nozzle from exposure to foreign matter, thereby providing the effect of preventing contamination and clogging of the lower nozzle.

Second, the material detection sensor shows the operation timing of the towing unit, so that the covering unit protects the lower nozzle in a timely manner.

Third, through the buffering unit, it is possible to prevent the covering unit from being broken by the fluid injection force of the lower nozzle.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing equipment involved in a rolling process in a steel manufacturing process; FIG.
FIG. 2 is a conceptual diagram showing that a foreign matter penetrates into a lower nozzle of the accelerator cooler. FIG.
Figures 3 and 4 illustrate a preferred use of the nozzle protection device according to the invention.
5 is an exploded perspective view showing a nozzle protecting apparatus according to the present invention.

The nozzle protection device according to the present invention may have various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the description. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Hereinafter, a nozzle protection apparatus according to the present invention will be described in detail with reference to the drawings.

Figures 3 and 4 illustrate a preferred use of the nozzle protection device according to the invention. 5 is an exploded perspective view showing a nozzle protecting apparatus according to the present invention.

The present invention is an apparatus for protecting a lower nozzle (31) which is located below a work (1) and ejects a fluid, for example, cooling water, toward a work (1), comprising: a covering unit (120); And a guide unit (110).

As described above, the lower nozzle 31 is a nozzle disposed between the transport rolls 2 for transporting the work 1. The lower nozzle 31 is moved in a direction in which the work 1 The foreign matter accumulated on the upper surface is contaminated by the lower nozzle 31 and is frequently contaminated.

Accordingly, the present invention provides the covering unit 120 on the upper part of the lower nozzle 31 to cover the upper part of the lower nozzle 31.

3 and 4, the covering unit 120 is configured to open and close the upper part of the lower nozzle 31. The upper part of the lower nozzle 31 is horizontally disposed parallel to the direction of the lower nozzle 31, And the lower nozzle 31 can be opened and closed while being moved.

Preferably, the covering unit 120 is made of a material such as stainless steel which is resistant to corrosion, which is exposed by the cooling water injected from the lower nozzle 31. The covering unit 120 should have mechanical strength so as not to be damaged by the cooling water injection force And it should have heat resistance so as not to be damaged by the heat of the material 1 to be transported.

The guide unit 110 is disposed on at least one side of the lower nozzle 31, preferably on both sides of the lower nozzle 31. [ In addition, the guide unit 110 should be provided substantially parallel to the longitudinal direction of the lower nozzle 31, and substantially the same as the length of the lower nozzle 31.

The guide unit 110 is provided to guide the horizontal movement path of the covering unit 120 when the covering unit 120 is horizontally moved and to prevent the covering unit 120 from deviating from the horizontal movement path provided by the guide unit 110 desirable.

First, the covering unit 120 will be described in more detail. As shown in FIG. 5, a cover 121; And a bridge 122.

The cover 121 directly covers the upper portion of the lower nozzle 31 and is configured to cover the entire upper surface of the lower nozzle 31. In FIG. 5, a flat plate shape is used. However, it is not necessarily limited to such a shape, but it may be formed in a convex shape and so on.

As described above, the cover 121 is preferably made of a material such as stainless steel which is resistant to corrosion and is directly exposed to the cooling water sprayed from the lower nozzle 31. In order to prevent the cover 121 from being damaged by the cooling water spraying force It must have a mechanical strength and be exposed to the heat of the material (1) to be conveyed, so that it has heat resistance.

The bridge 122 is formed along both sides of the cover 121 to support the cover 121.

The bridge 122 slides directly or indirectly along the guide unit 110 to move the supporting cover 121 horizontally.

The covering unit 120 may further include a plurality of rolls 123 as shown in Figure 5 wherein the presence of the rolls 123 causes the bridge 122 to move indirectly along the guide unit 110 The cover 121 is slid and moved horizontally.

The roll 123 is provided on the lower side of the bridge 122 to roll itself as the bridge 122 is conveyed along the guide unit 110 to minimize the friction between the bridge 122 and the guide unit 110 do.

As shown in FIG. 5, the guide unit 110 includes a rail part 111; And a side plate 112.

The rail part 111 is provided on the lower side of the covering unit 120, as the name suggests, to provide a path through which the covering unit 120 is transported.

Since the rail part 111 can be applied by applying a commonly used H beam or applying a shape such as a train rail, a detailed description thereof will be omitted.

The side plates 112 are respectively disposed on the outer side surfaces of the side surfaces of the rail portion 111 so as to guide the movement path so as not to leave the rail portion 111 when the covering unit 120 is moved along the rail portion 111. [ .

The side plate 112 protrudes upward from the outer surface of the rail portion 111. The height of the side plate 112 preferably protrudes beyond the radius of the roll 123, Is preferably formed to be wider than the width of the bridge 122 described above.

The side plate 112 should be connected to the rail portion 111 through welding or the like so as to withstand a weight of 80% or more of the weight of the covering unit 120 as the side plate 112 should guide the conveying path of the covering unit 120.

The nozzle protecting apparatus 100 according to the present invention may further include a towing unit 130. [

The towing unit 130 is provided on one side of the covering unit 120, as shown in FIG. 5, to transfer the covering unit 120.

The towing unit 130 includes a towing bar 132; And a cylinder 131.

One side of the towing bar 132 is connected to the covering unit 120 and the other side is connected to the cylinder 131.

The toying bar 132 does not have its own power and constitutes a rod-shaped frame for towing the covering unit 120 in accordance with the expansion and contraction of the cylinder 131.

The cylinder 131 is constructed of a hydraulic cylinder or the like and is controllable through other devices or devices or human machine interfaces (HMI). The cylinder 131 is configured to transport the covering unit 120 by expansion or contraction.

The cylinder 131 transports and traverses the covering unit 120 via the towing bar 132. The provision of the power must provide power sufficiently in excess of the weight and frictional force of the covering unit 120 Of course.

The nozzle protection apparatus 100 according to the present invention may further include a buffering unit 140. [

The buffering unit 140 performs a buffering function for protecting the cover 121 from the cooling water injected by the lower nozzle 31. [

Is provided on the lower surface of the buffering unit 121 to protect the cover 121 from the cooling water sprayed by the lower nozzle 31, as shown in Fig.

The buffering unit 140 may be generally made of rubber or styrofoam. However, it is preferable that the buffering unit 140 is composed of a sponge or the like capable of temporarily absorbing the fluid sprayed from the lower nozzle 31, that is, the cooling water.

The nozzle protection device 100 according to the present invention includes a material detection sensor 150; And a control unit 160. [0027]

The material detecting sensor 150 is disposed on one side of the material, preferably on the side or bottom surface of the material, and detects the presence or absence of the material 1.

As shown in FIG. 5, the material detecting sensor 150 can detect the presence or absence of a signal, a laser or the like, which is emitted from the material 1, And senses the presence of the material (1).

The material sensing sensor 150 senses the presence of the material 1 and transmits the sensing result to the control unit 160. When the control unit 160 receives the sensing of the material 1 from the material sensing sensor 150, The controlling unit controls the towing unit 130 according to the presence or absence of the user.

More specifically, the control unit 160 controls the towing unit 130 so that the covering unit 120 opens the lower nozzle 31 when the work 1 is present on the upper part of the lower nozzle 31, The covering unit 120 controls the towing unit 130 so that the lower nozzle 31 is closed when the upper nozzle 1 is not present on the upper part of the lower nozzle 31. [

When the material detecting sensor 150 recognizes that the work 1 exists, it controls the towing unit 130 to open the lower nozzle 31. Thereafter, when it is recognized that the material 1 does not exist, the material 1 passes through the lower nozzle 31, so that the foreign matter present on the upper surface of the material 1 is not poured into the lower nozzle 31, The control unit 160 controls the towing unit 130 so that the covering unit 120 covers the lower nozzle 31. [

5, the guide unit 120 is preferably arranged in a length corresponding to the length of the lower nozzle 31, whereas the covering unit 140 is divided into a plurality of sections, preferably two sections .

When the covering unit 140 is divided into two compartments, the covering unit 140 has a movement in a mutually facing direction with respect to a point on the guide unit 120.

When the covering unit 140 is divided into two compartments, it is preferable that the covering unit 140 is partitioned into the same size and length, and the above-mentioned one point is preferably the center of the guide unit 120.

In this case, in order for the covering unit 120 to open the lower nozzle 31, the guide units 110 are moved in the mutually facing directions from each other to be mutually spaced, The covering units 120 which are opened at both ends of the guide unit 110 are moved so as to face each other from opposite ends of the guide unit 110, So that they are in mutual contact.

The movement of the covering unit 120 may be performed manually or by the above-described towing unit 130, and the towing unit 130 may also be controlled by the control unit 160, as described above.

The scope of the present invention is defined by the claims, the parentheses used in the claims are not used for optional limitation but are used for the definite components and the description in parentheses is also interpreted as an essential component .

1: Material
10: heating furnace
20: Rolling mill
30: accelerated cooler
31: Lower nozzle
32: upper nozzle
40: Hot straightener
100: According to the present invention,
110: Guide unit
111: Le Mans
112: side plate
120: Covering unit
121: cover
122: Bridge
123: roll
130: Towing unit
131: Cylinder
132: Towing bar
140: buffering unit
150: Material detection sensor
160:

Claims (11)

An apparatus for protecting a lower nozzle located at a lower portion of a workpiece and spraying a fluid toward a workpiece,
A covering unit provided on an upper portion of the lower nozzle to cover an upper portion of the lower nozzle;
A guide unit disposed on at least one side of the lower nozzle for supporting at least one side of the covering unit and providing a path through which the covering unit is moved;
A towing unit provided at one side of the covering unit to pull the covering unit to be traversed along the guide unit;
A material detecting sensor disposed at one side of the material to detect the material; And
And a controller for receiving the detection of the material from the material detection sensor and selectively controlling the covering unit to cover the lower nozzle according to the presence or absence of the material.
The apparatus of claim 1, wherein the covering unit comprises:
A cover covering an upper portion of the lower nozzle; And
And a bridge provided on both sides of the cover to support the cover and to be transported along the guide unit.
The apparatus according to claim 2, wherein the covering unit comprises:
Further comprising a plurality of rolls provided on the lower side of the bridge and rolling on the guide unit as the bridge is conveyed along the guide unit.
The apparatus according to claim 1,
A rail part provided below the covering unit and forming a conveying path of the covering unit; And
And a side plate formed along an outer surface of the rail portion and guiding the covering unit to move along the rail portion.
delete [2] The apparatus of claim 1,
A towing bar connected to one side of the covering unit; And
And a cylinder connected to the towing bar and generating power to be supplied to the covering unit by expansion and contraction of the length thereof.
3. The apparatus according to claim 2,
Further comprising a buffering unit provided on a lower surface of the cover to protect the cover from fluid ejected by the lower nozzle.
8. The apparatus of claim 7, wherein the buffering unit comprises:
And a material for sucking the fluid.
delete delete An apparatus for protecting a lower nozzle located at a lower portion of a workpiece and spraying a fluid toward a workpiece,
A covering unit provided on an upper portion of the lower nozzle to cover an upper portion of the lower nozzle; And
And a guide unit disposed on at least one side of the lower nozzle for supporting at least one side of the covering unit and providing a path through which the covering unit is moved,
The guide unit includes:
A lower nozzle having a length corresponding to the length of the lower nozzle,
The covering unit includes:
Wherein the guide unit is divided into two sections, having a mutual symmetry movement at one point on the guide unit,
The one-
A center portion from both ends of the guide unit,
The covering unit includes:
When the covering unit opens the lower nozzle,
Wherein the guide unit moves in a direction in which the guide units face each other,
When the covering unit closes the lower nozzle,
Wherein the guide units move in mutually opposite directions from both ends of the guide unit, and are in contact with each other at the center of the guide unit.

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