KR101746986B1

KR101746986B1 - Cooling apparatus

Info

Publication number: KR101746986B1
Application number: KR1020150184751A
Authority: KR
Inventors: 민관식; 이필종; 강종훈; 권휘섭
Original assignee: 주식회사 포스코
Priority date: 2015-12-23
Filing date: 2015-12-23
Publication date: 2017-06-14

Abstract

The present invention relates to a cooling device capable of controlling the flow rate of cooling water supplied in the width direction on a zone-by-region basis, the cooling device comprising: a base frame connected to an external cooling fluid supply line; And a plurality of group nozzles which are provided in a plurality of rows and arranged in the longitudinal direction of the housing and in which a certain number of the nozzles form a group for jetting the cooling fluid to a predetermined region, And a nozzle opening / closing means provided for opening / closing the nozzle. With this configuration, it is possible to control the flow rate of the cooling water supplied in the width direction of the workpiece to be varied, thereby minimizing the temperature deviation in the width direction of the high temperature workpiece.

Description

COOLING APPARATUS

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cooling device, and more particularly, to a cooling device capable of controlling a flow rate of cooling water supplied in a width direction.

1 is a schematic view of a general thick plate process line. 1, the workpiece is taken out to a high-temperature state in the heating furnace 10, passed through the roughing mill 20 and the longitudinal mill 30, pre-calibrated in the preliminary calibrating machine 40, (50). Then, the accelerated cooling material passes through the hot straightener 60 and is shape-corrected, and then cooled in the cooling stand 70. [

Here, as shown in Fig. 2, the conventional cooling device 50 is configured to inject a certain amount of cooling water in the width direction of the work. However, if a certain amount of cooling water is sprayed in the width direction of the material, the cooling effect is lowered due to the smaller contact area of the cooling water compared to the volume of the material, and the cooling effect is increased due to the wider contact area of the cooling water. There is a problem that a temperature deviation occurs.

Further, in order to reduce the temperature deviation with respect to the longitudinal direction of the workpiece, the tip end (a), the central portion (b), and the end portion (c) of the work are moved in accordance with the indicated flow rate profile with respect to time shown in Fig. And a technology for controlling the supplied flow rate was performed. This traces the position of the moving material and adjusts the flow rate at that position to the valve.

However, the amount of water supplied to cool the material is several tons, so it takes about 3 seconds to control the flow rate with the valve, and it takes about 10 seconds or longer to stabilize the supplied flow rate have. As a result, the flow rate of the material sprayed on the workpiece can not secure a time for accurately following the indicated flow rate profile, and as shown in FIG. 3, the deviation of the flow rate actually supplied from the tip end portion (a) And as a result, there is a problem of causing a temperature deviation in the material.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to minimize the temperature deviation in the width direction of a high-temperature material and to vary the flow rate of cooling water supplied in the width direction so as to supply cooling water corresponding to the width of the material The present invention has been made in view of the above problems.

It is another object of the present invention to provide a cooling device capable of minimizing the time required for supplying and blocking the flow rate so as to follow the indicated flow rate profile in order to minimize a temperature deviation occurring in the longitudinal direction of the high- have.

According to an aspect of the present invention, there is provided a cooling apparatus including: a base frame connected to an external cooling fluid supply line; A housing disposed in the base frame and supplied with a cooling fluid, the nozzle having a plurality of rows and columns; And nozzle opening / closing means provided in a plurality of the nozzle openings and arranged in the longitudinal direction of the housing, the nozzle opening / closing means individually opening and closing a plurality of group nozzles in which a predetermined number of the nozzles are grouped so as to jet a cooling fluid to a predetermined region.

The base frame includes: a support frame provided on the housing; A storage pipe disposed in the support frame and connected to the cooling fluid supply line to store a cooling fluid; And a supply pipe connecting the housing and the storage pipe to supply the cooling fluid to the housing.

Wherein the nozzle opening and closing means includes a mask disposed inside the housing to slide in the width direction of the housing and having a plurality of communication holes at positions corresponding to the nozzles; A movable part which is provided in the housing and opens or closes the nozzle by moving the mask such that a communication hole of the mask is located above the nozzle or a closed surface of the mask is located above the nozzle; A mask support provided in the housing and supporting the mask to move horizontally; And a pressing portion provided in the housing and pressing the mask toward the nozzle when the mask is moved and disposed at a position closing the nozzle.

Wherein the mask comprises: a base plate having a plurality of flow holes through which a cooling fluid can flow, the plate being formed at regular intervals; And an elastic pad disposed on one side of the base plate and having a hole formed at a position corresponding to the flow hole of the base plate and sealing the nozzle when the nozzle is closed.

The mask supporting unit may include: a fixing member protruding from a lower surface of the housing; One end of which is inserted into the fixing member and linearly moved, and the other end of the support member supporting the lower surface of the mask; And an elastic member provided between the fixing member and the supporting member and applying an elastic force in a direction in which the supporting member protrudes.

The pressing portion includes a pressing member which is disposed on the top of the mask and has a protrusion formed on one side thereof so as to press the mask; And an actuator disposed in the housing and connected to the other side of the pressing member to move the pressing member in the up and down direction.

The pressing portion may include: a support plate disposed on the mask; A pressing member disposed on the support plate and configured to expand toward the mask side when air is introduced into the mask to press the mask; And an air flow line provided in the housing and communicating with the pressing member to introduce or discharge air into the pressing member.

Wherein the nozzle opening and closing means includes a mask disposed inside the housing to move in a width direction of the housing and having a plurality of communication holes at positions corresponding to the nozzles; A link member connecting both side ends of the mask positioned in the width direction of the housing and a lower side of the housing; And a control unit which is provided in the housing and rotates the link member such that a communication hole of the mask is located on the upper part of the nozzle or a closed surface of the mask is located on the upper part of the nozzle, And a moving part.

The cooling device according to the embodiment of the present invention is characterized in that the housing is disposed on the upper side of the workpiece and the longitudinal direction thereof is arranged in the width direction of the workpiece, and the nozzle opening / closing means opens / closes the plurality of group nozzles individually, The cooling fluid may be selectively injected into the specific region.

According to the cooling device of the present invention, it is possible to control the flow rate of the cooling water supplied in the width direction of the workpiece to be variable, and to minimize the temperature deviation in the width direction of the high temperature workpiece.

According to the present invention, since the nozzle opening / closing means is provided, the nozzle opening / closing response speed can be improved, and the cooling water can be injected simultaneously through the plurality of nozzles, the cooling water injection flow rate can be quickly stabilized, The effect can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of a general thick plate process line,
2 is a schematic view schematically showing a cooling apparatus applied to a conventional thick plate process line,
3 is a graph comparing the indicated flow rate profile and the actual flow rate using the conventional cooling device,
4 is a perspective view schematically showing a cooling device according to an embodiment of the present invention,
5 is a perspective view schematically showing a plurality of group nozzles in a cooling apparatus according to an embodiment of the present invention,
6 is a front view schematically showing an operation state of a cooling apparatus according to an embodiment of the present invention,
7 is a perspective view schematically showing an enlarged view of a part of a cooling apparatus according to an embodiment of the present invention,
8 is a perspective view schematically showing a mask of a cooling device according to an embodiment of the present invention,
9 is a cross-sectional view schematically showing a state in which a nozzle is closed in a cooling device according to an embodiment of the present invention;
10 is a cross-sectional view schematically showing a state in which a nozzle is opened in a cooling device according to an embodiment of the present invention,
11 is a cross-sectional view schematically showing a state in which a nozzle is closed in a cooling apparatus according to another embodiment of the present invention,
12 is a cross-sectional view schematically showing a state in which a nozzle is opened in a cooling apparatus according to another embodiment of the present invention;
13 is a cross-sectional view schematically showing a state in which a nozzle is closed in a cooling device according to another embodiment of the present invention;
FIG. 14 is a cross-sectional view schematically illustrating a state in which a nozzle is opened in a cooling apparatus according to another embodiment of the present invention.

In order to facilitate understanding of the features of the present invention, a cooling apparatus according to an embodiment of the present invention will be described in detail below.

It should be noted that, in order to facilitate understanding of the embodiments described below, reference numerals are added to the components of the accompanying drawings, so that the same components are denoted by the same reference numerals even though they are shown in different drawings . In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Hereinafter, a specific embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 4 is a perspective view schematically showing a cooling device according to an embodiment of the present invention, and FIG. 5 is a perspective view schematically showing a plurality of group nozzles in a cooling device according to an embodiment of the present invention. 6 is a front view schematically showing the operation state of the cooling device. FIG. 7 is a perspective view schematically showing an enlarged part of a part of the cooling device, and FIG. 8 is a perspective view schematically showing the mask of the cooling device. FIGS. 9 and 10 are cross-sectional views schematically showing a state in which the nozzle is closed and opened in the cooling device.

4 to 10, a cooling apparatus 100 according to an embodiment of the present invention includes a base frame 200 connected to an external cooling fluid supply line 10, A housing 300 in which a plurality of nozzles 310 are provided in a row and a row and a plurality of nozzles 310 are disposed in the longitudinal direction of the housing 300 and are arranged in the longitudinal direction of the housing 300, 310) are provided to individually open and close the plurality of group nozzles forming the group.

The housing 300 is disposed in the base frame 200 and is supplied with a cooling fluid. The nozzle 310 is provided in a plurality of rows and columns. A predetermined number of the nozzles 310 forms a group, And the nozzle opening / closing means 400 is configured to open / close the group nozzle G to inject the cooling fluid into a predetermined region.

That is, a plurality of the nozzles 310 are provided, and a predetermined number of the nozzles 310 are simultaneously opened by using a predetermined number of the nozzles 310 as the group nozzles G, The supplied flow rate can be stabilized in a comparatively short time, and the indicated flow rate profile can be stably followed. Here, the cooling fluid is provided as cooling water, and may be provided to cool down to the high-temperature material by free fall due to the weight of the cooling fluid when the nozzle 310 is opened.

The nozzle opening / closing means 400 is provided to open at least one of the group nozzles G of the plurality of group nozzles G to selectively discharge the cooling fluid to the specific region Z.

For example, as shown in FIG. 6, when 10 group nozzles are arranged, the group nozzles 2, 4, 7, and 9 are closed on the left side in the drawing, The 5th, 6th, 8th, and 10th group nozzles are operable to open and inject the cooling fluid.

With this configuration, the cooling fluid can be selectively injected into a specific region in the width direction of the high-temperature material (M), so that the temperature deviation in the width direction can be minimized. That is, in a region where a large amount of cooling fluid needs to be injected from the high-temperature material M to a high-temperature region, two or three group nozzles corresponding to the region are opened to allow a large amount of cooling fluid to be injected And the relatively low temperature region can open one group nozzle to inject a relatively small amount of cooling fluid or close the group nozzle to operate the cooling fluid so as not to spray, thereby minimizing the temperature deviation in the width direction.

Further, in order to prevent the occurrence of the water hammer phenomenon in the area where the cooling fluid is stored and supplied, the cooling apparatus is operated so that a certain amount of cooling fluid is discharged from the nozzle groups 1 and 10 located at both ends of the plurality of group nozzles It is preferable to be always open.

The base frame 200 includes a support frame 210 on which the housing 300 is installed and a storage pipe 210 disposed on the support frame 210 and connected to the cooling fluid supply line 10, And a supply pipe 230 connecting the housing 300 and the storage pipe 220 to supply the cooling fluid to the housing 300.

That is, the storage pipe 220 is connected to the cooling fluid supply line 10 to receive the cooling fluid, and the cooling fluid stored in the housing 300 for smooth supply of the cooling fluid to the housing 300 It is preferable to be formed so as to preliminarily store an amount of the cooling fluid in advance. The supply pipe 230 is provided with a valve (not shown) to supply the cooling fluid when the amount of the cooling fluid stored in the housing 300 is less than a predetermined amount.

The housing 300 is provided with a hollow portion to store a predetermined amount or more of a cooling fluid therein, and a lower side is horizontally provided to form a plurality of the nozzles 310.

In addition, the housing 300 may be formed long so that the group nozzles are arranged in a row. In this case, the housing 300 may be arranged in the width direction of the high-temperature material to selectively open the plurality of group nozzles to supply the cooling fluid to a specific region in the width direction.

The nozzle 310 is provided in the housing 300 in a plurality of rows and columns to inject a cooling fluid into a predetermined region. The nozzle 310 is formed to protrude from the lower side of the housing 300 to the inside of the housing 300 and has a through hole formed in the longitudinal direction so as to inject the cooling fluid to the outside. That is, when the mask 410 closes the nozzle 310, the end of the protruded nozzle 310 can be pressed and closed. Thus, leakage of the cooling fluid can be prevented more effectively. Of course, the shape of the nozzle 310 is not limited thereto, and any shape capable of simultaneously spraying the cooling fluid may be provided in a certain region.

The plurality of nozzles 310 may be divided into a plurality of group nozzles by forming a predetermined number of nozzles in a group. For example, when the nozzle 310 is formed in eight rows and eighty columns in the housing 300, eight groups of eight nozzles 310 are divided into one group nozzle. At this time, the mask 410 is provided to simultaneously open and close the one group nozzle, that is, 8 vertical nozzles and 8 horizontal nozzles 310.

The nozzle opening and closing means 400 is disposed inside the housing 300 so as to slide in the width direction of the housing 300 and has a plurality of communication holes h formed at positions corresponding to the nozzles 310, Wherein the mask 410 is provided on the housing 300 and the communication hole h of the mask 410 is located above the nozzle 310 or the closing surface of the mask 410 is located on the nozzle 310. [ A movable part 420 for opening and closing the nozzle 310 by moving the mask 410 so as to be positioned at an upper part of the housing 300 and a mask supporting part 430 provided in the housing 300 for supporting the mask 410 to horizontally move, And a pressing unit 440 provided in the housing 300 to press the mask 410 toward the nozzle 310 when the mask 410 is moved to close the nozzle 310, .

The mask 410 is disposed inside the housing 300 and linearly moves in the width direction of the housing 300 and has a plurality of nozzles 310 protruding into the housing 300, And simultaneously ejects or blocks the cooling fluid through the plurality of nozzles 310. At this time, the mask 410 is slid by the driving of the movable part 420 disposed in the housing 300. At this time, when the nozzle 310 is opened by moving the mask 410 while the nozzle 310 is closed, the flow rate of the cooling fluid can be controlled by adjusting the movement distance of the mask 410 . That is, when the mask 410 is moved, the overlapped area between the flow hole h of the mask 410 and the nozzle 310 is changed, so that it is possible to control the flow rate of the cooling fluid to be injected.

The mask 410 includes a base plate 411 having a plurality of flow holes h through which a cooling fluid can flow and one end of which is fastened to the movable part 420, A hole is formed at a position corresponding to the flow hole h of the base plate 411 and an elastic pad 412 disposed on the lower side to seal the nozzle 310 when the nozzle 310 is closed do.

In addition, a connection member 421 for connecting the base plate 411 of the mask 410 and the movable unit 420 may be further included. The connecting member 421 is coupled to the base plate 411 and the movable unit 420, respectively. That is, when the pressing force is released by the pressing unit 440, the mask 410 is moved upward by the support member 432 of the mask supporting unit 430, which is described below, The connection member 421 is provided to eliminate the interference with the movable part 420.

The mask support part 430 includes a fixing member 431 protruding from the lower side of the housing 300 and a fixing part 431 having one end inserted into the fixing part 431 and linearly moved, And an elastic pad 412 provided between the fixing member 431 and the supporting member 432 to apply an elastic force in a direction in which the supporting member 432 protrudes, . A roller 433 is provided at the other end of the support member 432 to minimize the frictional force with the mask 410.

The mask support 430 is disposed at both ends of the mask 410 to support the mask 410 and no flow holes are formed at both sides of the mask 410.

The pressing portion 440 is positioned at a position where the mask 410 is moved to close the nozzle 310 so that the flow hole h of the mask 410 is separated from the nozzle 310, Is disposed on the upper side of the nozzle 310, the mask 410 is pressed toward the nozzle 310 to seal the nozzle 310. [

The pressing portion 440 includes a pressing member 441 disposed on the upper portion of the mask 410 and having a protrusion 443 formed on one side thereof to press the mask 410, And an actuator 442 connected to the other side of the pressing member 441 to move the pressing member 441 in the vertical direction.

The actuator 442 of the pressing portion 440 moves the pressing member 441 upward to release the pressing force of the mask 410. When the mask 410 is rotated, The supporting member 432 of the mask supporting part 430 is spaced apart from the nozzle 310 by a force projected by the elastic force of the elastic pad 412 so as to have a predetermined gap, The nozzle 410 may be horizontally moved so that the flow hole h of the mask 410 is positioned above the nozzle 310 to spray the cooling fluid.

FIG. 11 is a cross-sectional view schematically showing a state in which a nozzle is closed in a cooling device according to another embodiment of the present invention, and FIG. 12 is a sectional view schematically showing a state in which a nozzle is opened in the cooling device.

11 and 12, the cooling device 110 according to another embodiment of the present invention has the same configuration as the cooling device 100 according to the embodiment of the present invention shown in FIG. 9, (450).

The pressing unit 450 includes a supporting plate 451 disposed on the upper side of the mask 410 and a supporting plate 451 disposed on the supporting plate 451 and expanding toward the mask 410 when air flows therein, And an air flow line 453 which is provided in the housing 300 and communicates with the pressure member 452 so as to introduce or discharge air into the pressure member 452. [ ).

That is, the pressing member 452 is provided in an accordion shape. When the air is introduced through the air flow line 453, the pressing member 452 expands and presses the mask 410. Through the air flow line 453, And is configured to be spaced apart from the mask 410 to remove the pressing force.

With this configuration, when the cooling fluid needs to be injected, the air inside the pressing member 452, which is disposed on the support plate 450 of the pressing portion 450 and presses the mask 410, is discharged to the outside, The support member 432 of the mask support member 430 is pressed against the support member 432 by the force that the elastic force of the elastic pad 412 protrudes due to the elastic force of the elastic pad 412 The movable part 420 moves the mask 410 in the horizontal direction so that the flow hole h of the mask 410 moves the nozzle 310 in the horizontal direction, So that the cooling fluid can be injected.

FIG. 13 is a cross-sectional view schematically showing a state in which a nozzle is closed in a cooling device according to another embodiment of the present invention, and FIG. 14 is a sectional view schematically showing a state in which a nozzle is opened in the cooling device.

13 and 14, the cooling device 120 according to another embodiment of the present invention has all the same configurations in the cooling device 100 according to the embodiment of the present invention shown in FIG. 9, Only the constitution of the opening and closing means 500 is different.

The nozzle opening and closing means 500 includes a mask 300 having a plurality of communication holes h disposed in the housing 300 to move in the width direction of the housing 300 and corresponding to the nozzles 310 A link member 530 connecting both side ends of the mask 510 positioned in the width direction of the housing 300 and a lower side of the housing 300; The link member 530 is rotated so that the communication hole h of the mask 510 is positioned above the nozzle 310 or the closed surface of the mask 510 is positioned above the nozzle 310, And a movable part 520 for horizontally moving the mask 510 to open and close the nozzle.

The link member 530 is coupled to both ends of the mask 510 so that the link member 530 is rotated. When the link member 530 is rotated, the mask 510 linearly moves in the forward and backward directions and moves in the vertical direction.

For example, as shown in FIG. 13, when the link member 530 is rotated to the left with reference to the drawing, the mask 510 is disposed to close the nozzle 310. [ 14, when the link member 530 is rotated to a vertical position, the mask 510 moves linearly to the right with reference to the drawing while being spaced apart from the nozzle 310, The flow hole h of the nozzle 510 may be disposed above the nozzle 310 to smoothly discharge the cooling fluid to the outside.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

100, 110, 120: cooling device 200: base frame
210: support frame 220: storage pipe
230: Supply piping 300: Housing
310: nozzle 400: nozzle opening / closing means
410: mask 411: base plate
412: elastic pad 420: movable part
430: mask supporting portion 431: fixing member
432: support member 433: roller
434: elastic member 440:
441: pressure member 442: actuator
450: pressing portion 451:
452: pressure member 453: air flow line
500: nozzle opening / closing means 510: mask
520: moving part 530: link member

Claims

A base frame connected to an external cooling fluid supply line;
A housing disposed in the base frame and supplied with a cooling fluid, the nozzle having a plurality of rows and columns; And
Nozzle opening / closing means individually provided to open / close a plurality of group nozzles which are provided in a plurality of groups and are arranged in the longitudinal direction of the housing and in which a predetermined number of the nozzles are grouped so as to inject a cooling fluid into a predetermined region;
/ RTI >
The nozzle opening /
A mask disposed inside the housing to slide in the width direction of the housing and having a plurality of communication holes at positions corresponding to the nozzles;
A movable part which is provided in the housing and opens or closes the nozzle by moving the mask such that a communication hole of the mask is located above the nozzle or a closed surface of the mask is located above the nozzle;
A mask support provided in the housing and supporting the mask to move horizontally; And
A pressing portion provided in the housing and pressing the mask toward the nozzle when the mask is moved and disposed at a position closing the nozzle;
And a cooling device.

The method according to claim 1,
The base frame includes:
A support frame provided on the housing;
A storage pipe disposed in the support frame and connected to the cooling fluid supply line to store a cooling fluid; And
A supply pipe connecting the housing and the storage pipe to supply a cooling fluid to the housing;
And the cooling device.

delete

The method according to claim 1,
Wherein,
A base plate having a plurality of flow holes through which cooling fluid can flow, the base plate being formed at regular intervals; And
An elastic pad disposed on one side of the base plate and having a hole at a position corresponding to the flow hole of the base plate and sealing the nozzle when the nozzle is closed;
And a cooling device.

The method according to claim 1,
The mask support portion
A fixing member protruding from a lower surface of the housing;
One end of which is inserted into the fixing member and linearly moved, and the other end of the support member supporting the lower surface of the mask; And
An elastic member provided between the fixing member and the supporting member and applying an elastic force in a direction in which the supporting member protrudes;
And a cooling device.

The method according to claim 1,
The pressing portion
A pressing member disposed on the mask and having a protrusion formed on one side thereof so as to press the mask; And
An actuator disposed in the housing and connected to the other side of the pressing member to move the pressing member in a vertical direction;
And a cooling device.

The method according to claim 1,
The pressing portion
A support plate disposed above the mask;
A pressing member disposed on the support plate and configured to expand toward the mask side when air is introduced into the mask to press the mask; And
An air flow line provided in the housing and communicating with the pressing member to introduce or discharge air into the pressing member;
And the cooling device.

A base frame connected to an external cooling fluid supply line;
A housing disposed in the base frame and supplied with a cooling fluid, the nozzle having a plurality of rows and columns; And
Nozzle opening / closing means individually provided to open / close a plurality of group nozzles which are provided in a plurality of groups and are arranged in the longitudinal direction of the housing and in which a predetermined number of the nozzles are grouped so as to inject a cooling fluid into a predetermined region;
/ RTI >
The nozzle opening /
A mask disposed inside the housing to move in a width direction of the housing and having a plurality of communication holes at positions corresponding to the nozzles;
A link member connecting both side ends of the mask positioned in the width direction of the housing and a lower side of the housing; And
Wherein the mask is horizontally moved by rotating the link member so that the communication hole of the mask is located on the upper portion of the nozzle or the closed surface of the mask is located on the upper portion of the nozzle, ;
And a cooling device.

The method according to claim 1 or 8,
The housing is disposed on the upper portion of the workpiece, the longitudinal direction thereof is disposed in the width direction of the workpiece,
Wherein the nozzle opening / closing means individually opens and closes a plurality of the group nozzles to selectively eject a cooling fluid to a specific region in the width direction of the work.