JP2013123723A - Continuous coil cooling system - Google Patents

Abstract

The present invention provides a continuous cooling device that does not require a large-scale temperature management system and can reduce maintenance costs.
SOLUTION: A plurality of fixed skids 3 arranged along a row direction in a water tank 1 and capable of holding the coil 2 in a dipped state, and a coil at a carry-in position outside the water tank 1 in one side of the row direction. 2, a carry-in skid 5 that can hold 2, a carry-out skid 7 that can hold the coil 2 at the carry-out position outside the water tank 1 on the other side in the row direction, and a row along the row direction. A plurality of movable bodies that can advance and retreat, and a movable skid 11 that can move up and down while being supported by each of the movable bodies and can hold the coil 2 are provided. Then, by moving the movable body forward and backward and raising and lowering the movable skid 11, one side in the row direction between the carry-in skid 5 and the fixed skid 3, between the fixed skids 3, and between the fixed skid 3 and the carry-out skid 7. The coil 2 is moved sequentially from one to the other.
[Selection] Figure 1

Description

  The present invention relates to a continuous coil cooling apparatus for cooling a coil wound up after hot rolling.

The coil that is hot-rolled and wound up needs to be cooled to near room temperature before shipment or the next process. Generally, it is air-cooled in a coil yard attached to a hot rolling factory, but may be water-cooled to shorten the lead time to the next process or customer. The following methods are known for water cooling of the coil.
First, there is a method in which a nozzle is provided for each coil yard skid, and cooling water is sprayed or injected from the nozzle to the coil (see Patent Documents 1 and 2). There is also a method of immersing the coil in a water tank in which cooling water is stored (see Patent Document 3).

JP 63-20417 A Japanese Patent Application Laid-Open No. 5-177240 JP 56-116834 A

In the method of spraying or spraying cooling water on the coil or immersing the coil in the water tank, a crane is used to transport the coil before and after cooling, but such cooling equipment is filled with water vapor. Therefore, the crane is easily corroded, and the cost of maintenance becomes high. Also, the equipment itself is prone to aging.
Furthermore, if the coil is randomly placed in a vacant address in the yard for cooling, the cooling time must be measured for each coil, so that the temperature management system becomes large.
An object of the present invention is to provide a continuous cooling device that does not require a large-scale temperature management system and that can suppress maintenance costs.

  In the continuous coil cooling apparatus according to one aspect of the present invention, the cooling water is stored, and a water tank capable of immersing a plurality of coils along a preset arrangement direction in a horizontal plane, and a water tank along the arrangement direction. A plurality of fixed skids that can be held in a state where the coils are immersed, and a carry-in skid that can hold the coil before being carried into the water tank at a carry-in position on one side in the arrangement direction and outside the water tank And at the carry-out position on the other side in the row direction and outside the water tank, a carry-out skid capable of holding the coil after being carried out from the water tank, and at least outside the cooling water stored in the water tank, in the row direction. And a movable skid that can be moved up and down and can hold a coil while being supported by each of the movable bodies. Back and forth, and moving skids up and down More, between the carry-skid and the fixed skid, between the stationary skids each other, and between the fixed skid and unloading skid, characterized in that to turn move the coil toward the other from one row arrangement direction.

In the continuous coil cooling device according to one aspect of the present invention, the fixed skid, the carry-in skid, and the carry-out skid hold the center in the axial direction of the coil, and the movable skid holds both ends of the coil in the axial direction. It is characterized by.
In the continuous coil cooling apparatus according to one aspect of the present invention, the carry-in skid is mounted on a carry-in carriage that carries the coil to the carry-in position, and the carry-out skid is loaded on the carry-out carriage that carries the coil from the carry-out position. Features.
In the continuous coil cooling apparatus according to one aspect of the present invention, the movable skid is configured to be movable up and down in the vertical direction by expansion and contraction of an expansion and contraction mechanism interposed between the movable body and the expansion and contraction mechanism at least in the water tank. It is arranged outside the stored cooling water.

  According to the continuous coil cooling device concerning one mode of the present invention, since the crane equipment for putting a coil on a skid becomes unnecessary, the cost of maintenance can be controlled. Further, since the coil is moved in order from the carry-in side to the carry-out side, the coil temperature after cooling is determined by the immersion time in the water tank, so that a large temperature management system is not required.

It is a general view of a continuous coil cooling device. It is sectional drawing of a water tank. It is a figure explaining operation | movement of a moving body and the cylinder for raising / lowering.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall view of a continuous coil cooling apparatus.
FIG. 2 is a cross-sectional view of the water tank.
Cooling water is stored in the water tank 1, and the water tank 1 has a depth and width sufficient to immerse the plurality of coils 2 along a preset arrangement direction in a horizontal plane. A plurality of fixed skids 3 that can be held in a state in which the coil 2 is immersed are fixed to the bottom surface in the water tank 1 along the line-up direction. In addition, one side of the arrangement direction is defined as the carry-in side, the other is defined as the carry-out side, and a direction orthogonal to the arrangement direction on the horizontal plane is defined as the width direction.

  A substantially V-shaped groove is formed on the upper surface of the fixed skid 3 when viewed from the width direction, and the coil 2 is placed in the groove of the fixed skid 3 with the axial direction of the coil 2 aligned with the width direction. it can. Among the plurality of fixed skids 3, those positioned at both ends in the arrangement direction are set to a height that holds the coil 2 near the water surface, and the others are immersed in the entire coil 2 in water. It is set to the height to hold it.

The fixed skid 3 is fixed at the approximate center in the width direction of the water tank 1. The length in the width direction of the fixed skid 3 is set to be shorter than the length in the axial direction of the coil 2, and the fixed skid 3 holds the center in the axial direction of the coil 2.
On the carry-in side in the row direction, outside the water tank 1, the carry-in cart 4 travels along a predetermined track. A loading skid 5 capable of holding the coil 2 is mounted on the loading carriage 4, and the coil 2 before cooling is placed on the loading skid 5 and loaded to a preset loading position. The carry-in position is a position where the carry-in skid 5 is in the same row as the fixed skid 3 described above.

A substantially V-shaped groove is formed on the upper surface of the carry-in skid 5 when viewed from the width direction, and the coil 2 is placed in the groove of the carry-in skid 5 with the axial direction of the coil 2 aligned with the width direction. it can. The holding position of the coil 2 in the carry-in skid 5 is the same as that of the fixed skid 3 that is located closest to the carry-in side in the row direction. That is, the height is set to hold the coil 2 in the vicinity of the water level of the cooling water stored in the water tank 1.
The width in the width direction of the carry-in skid 5 is set shorter than the length in the axial direction of the coil 2, and the carry-in skid 5 holds the center in the axial direction of the coil 2.

  On the carry-out side in the line-up direction and outside the water tank 1, the carry-out carriage 6 travels along a predetermined track. A carry-out skid 7 that can hold the coil 2 is mounted on the carry-out carriage 6, and the cooled coil 2 is placed on the carry-out skid 7 and carried out from a preset carry-out position. This unloading position is a position where the unloading skid 7 is in the same row as the fixed skid 3 described above.

A substantially V-shaped groove is formed on the upper surface of the carry-out skid 7 when viewed from the width direction, and the coil 2 is placed in the groove of the carry-out skid 7 with the axial direction of the coil 2 aligned with the width direction. it can. The holding position of the coil 2 in the carry-out skid 7 is the same as that of the fixed skid 3 that is located closest to the carry-out side in the row direction. That is, the height is set to hold the coil 2 in the vicinity of the water level of the cooling water stored in the water tank 1.
The length in the width direction of the carry-out skid 7 is set to be shorter than the length in the axial direction of the coil 2, and the carry-out skid 7 holds the center in the axial direction of the coil 2.

A pair of rails 8 extending along the row direction are laid on the upper surface of the side walls at both ends in the width direction constituting the water tank 1, and a plurality of moving bodies 9 advance and retreat along the pair of rails 8. The rail 8 has a length in the row direction longer than the length of the water tank 1, the carry-in side extends at least above the carry-in skid 5 at the carry-in position, and the carry-out side is carried out at least at the carry-out position. It extends to above the skid 7.
The moving bodies 9 are opposed to each other in the width direction across the cooling water stored in the water tank 1, that is, the moving bodies 9 located on the opposite shore form a pair, and advance and retreat synchronously.

  The pair of moving bodies 9 in the width direction are arranged in the row direction by a number larger by one set than the number of the fixed skids 3. Therefore, when the pair of moving bodies 9 are arranged at the positions corresponding to the carry-in skid 5 and the fixed skids 3, respectively, only the position corresponding to the carry-out skid 7 is in an empty state without the pair of moving bodies 9. A state in which the moving bodies 9 paired in the width direction are brought to the carry-in side corresponding to the carry-in skid 5 and the fixed skids 3 is referred to as a coil receiving state. On the other hand, when the pair of moving bodies 9 are arranged at the positions corresponding to the fixed skids 3 and the carry-out skids 7, respectively, the vehicle is in an empty state without the pair of moving bodies 9 only at the positions corresponding to the carry-in skids 5. A state in which the moving bodies 9 that are paired in the width direction are brought to the carry-in side in association with the fixed skids 3 and the carry-out skids 7 is referred to as a coil delivery state.

The moving body 9 has a front wheel axle and a rear wheel axle that are separated in the forward / backward direction, and is grounded to the rail 8 via a total of four wheels. In addition, the moving body 9 is provided with lifting cylinders 10 that can be expanded and contracted in two directions at two locations separated in the advancing and retracting direction.
A movable skid 11 capable of holding the coil 2 is provided at the upper end of the elevating cylinder 10 as it elevates as the elevating cylinder 10 (extension mechanism) expands and contracts.
The movable skid 11 is fixed to the upper end of the elevating cylinder 10 and extends to the inner side in the width direction of the water tank 1, the vertical frame 13 extending downward from the inner side in the width direction of the horizontal frame 12, and the lower end of the vertical frame 13. And a skid frame 14 extending inward in the width direction.
Note that the pair of moving bodies 9 in the width direction may connect the horizontal frames 12 to each other, which increases the structural strength.

  The pair of vertical frames 13 facing each other in the width direction are such that the distance between the inner peripheral surfaces in the width direction is larger than the length in the axial direction of the coil 2, and the distance between the outer peripheral surfaces in the width direction is the side wall constituting the water tank 1. It is set to be smaller than the distance between them. Thereby, at one end side in the width direction of the water tank 1, the vertical frame 13 has a gap between the coil 2 placed on the fixed skid 3 and the side wall constituting the water tank 1 on the side wall constituting the coil 2 and the water tank 1. It is possible to move in the line-up direction and the vertical direction without contact (interference).

The pair of skid frames 14 facing each other in the width direction are set such that the distance between the tips facing inward in the width direction is larger than the width of the fixed skid 3. As a result, the skid frame 14 can move in the row direction and the vertical direction without contacting (interfering) with the fixed skid 3.
The pair of skid frames 14 facing each other in the width direction is set such that the distance between the tips facing inward in the width direction is smaller than the axial length of the coil 2. A substantially V-shaped groove is formed when viewed from the width direction. Thereby, the axial direction both sides of the coil 2 can be mounted in the groove | channel of a pair of skid frame 14 which opposes in the width direction in the state which match | combined the axial direction of the coil 2 with the width direction.
The rail 8, the moving body 9, the elevating cylinder 10, etc. are arranged at least outside the cooling water stored in the water tank 1. Thereby, waterproof processing of the rail 8, the moving body 9, the raising / lowering cylinder 10, etc. can be omitted.

On the other hand, since the fixed skid 3, the skid frame 14, and the like are immersed in the cooling water stored in the water tank 1, a waterproof treatment and a rust prevention treatment are required.
Advancing / retreating of each moving body 9 and expansion / contraction of the lifting cylinder 10 are controlled by a control device (not shown).
The controller is arranged between the carry-in skid 5 and the fixed skid 3 positioned closest to the carry-in side, between the adjacent fixed skids 3, and between the fixed skid 3 positioned closest to the carry-out side and the carry-out skid 7. The coil 2 is moved in order from the carry-in side to the carry-out side in the installation direction.

Here, the operation will be described.
FIG. 3 is a diagram illustrating the operation of the moving body 9 and the lifting cylinder 10.
In (a) in the figure, the coil 2 is placed on the fixed skid 3, and the movable body 9 is on the carry-in side in the row direction with respect to the fixed skid 3. Further, the elevating cylinder 10 is contracted so that the upper surface of the skid frame 14 is below the lower portion of the coil 2. From this state, the moving body 9 is advanced along the rail 8 to the carry-out side. At this time, the vertical frame 13 and the skid frame 14 do not contact (interfere) with the coil 2 and the fixed skid 3.

  In (b) in the figure, the fixed skid 3 and the moving body 9 are in the same position in the line-up direction because the moving body 9 has moved forward along the rail 8 toward the carry-out side. That is, the skid frame 14 is located directly under the coil 2 placed on the fixed skid 3. From this state, the lifting cylinder 10 is extended. At this time, the vertical frame 13 and the skid frame 14 do not contact (interfere) with the fixed skid 3, but the upper surface of the skid frame 14 contacts the lower part of the coil 2. Therefore, the coil 2 is switched from the state where it is placed on the fixed skid 3 to the state where it is placed on the skid frame 14.

  In (c) in the figure, the coil 2 is lifted as the skid frame 14 is lifted by extending the lifting cylinder 10. At this time, the coil 2 is not exposed from the water surface of the cooling water, is maintained in a state immersed in the cooling water, and the lower portion of the coil 2 is above the upper surface of the fixed skid 3. From this state, the moving body 9 is advanced along the rail 8 to the carry-out side. At this time, the vertical frame 13 and the skid frame 14 do not contact (interfere) with the coil 2 and the fixed skid 3, and the coil 2 does not contact (interfere) with the fixed skid 3.

  Then, the movable body 9 is moved forward along the rail 8 to the carry-out side, and the adjacent fixed skid 3 and the movable body 9 on the carry-out side are set to the same position in the row direction. That is, the skid frame 14 is disposed directly above the fixed skid 3 on which the coil 2 is not placed. From this state, the lifting cylinder 10 is contracted. At this time, the vertical frame 13 and the skid frame 14 do not contact (interfere) with the fixed skid 3, but the lower portion of the coil 2 contacts the upper surface of the fixed skid 3. Therefore, the coil 2 is switched from the state where it is placed on the skid frame 14 to the state where it is placed on the fixed skid 3. From this state, the moving body 9 is moved back along the rail 8 toward the carry-in side. At this time, the vertical frame 13 and the skid frame 14 do not contact (interfere) with the coil 2 and the fixed skid 3.

Here, the operation of moving the coil 2 between the adjacent fixed skids 3, that is, in water, toward the carry-out side has been described, but between the carry-in skid 5 and the fixed skid 3 positioned closest to the carry-in side, and The same procedure is performed for the operation of moving the coil 2 toward the carry-out side between the fixed skid 3 and the carry-out skid 7 that are located on the most carry-out side.
In addition, when moving the coil 2 toward the carry-out side in water, the position where the upper surface of the skid frame 14 is below the lower portion of the coil 2 is the lowest position, and the coil 2 is exposed from the water surface of the cooling water. The position where the lower part of the coil 2 is above the upper surface of the fixed skid 3 is the highest. In order to satisfy these conditions, the vertical length of the vertical frame 13, the stroke amount of the lifting cylinder 10, the height of the fixed skid 3, the vertical thickness of the skid frame 14, the water tank 1, taking into account the diameter of the coil 2. It is necessary to set the depth of the water and the water level of the cooling water.

  Further, between the fixed skid 3 positioned closest to the carry-in side and the fixed skid 3 positioned next to the carry-in side, and the fixed skid 3 positioned closest to the carry-out side and fixed skid 3 positioned next to the carry-out side Between the position where the coil 2 is held near the water surface and the position where the coil 2 is entirely immersed in water. It is necessary to raise and lower the frame 14. Therefore, it is necessary to secure the stroke amount of the lifting cylinder 10 as compared with the case where the coil 2 is moved toward the carry-out side in water.

  Further, when the coil 2 is moved toward the carry-out side between the carry-in skid 5 and the fixed skid 3 positioned closest to the carry-in side and between the fixed skid 3 located closest to the carry-out side and the carry-out skid 7. Must pass through the side walls at both ends of the water tank 1 in the row direction. Therefore, it is necessary to set the stroke amount of the elevating cylinder 10 according to the heights of the side walls at both ends in the row direction constituting the water tank 1.

In the present embodiment, the pair of moving bodies 9 in the width direction are arranged in a line in the row direction by a number larger by one set than the number of the fixed skids 3. Therefore, the moving bodies 9 that are paired in the width direction are alternately moved forward and backward between the coil receiving state brought close to the carry-in side and the coil delivery state brought close to the carry-in side. The coil 2 can be moved sequentially from the side toward the carry-out side.
Thus, the need for a large cooling coil yard facility as in the prior art and a crane facility for placing the coil 2 on the skid become unnecessary, leading to a reduction in maintenance costs.

In addition, since the coil 2 is immersed in the water tank 1 filled with cooling water, the cooling water is sprayed or sprayed on the coil 2 as in the past by keeping the cooling water at an appropriate temperature with a heat exchanger or the like. Compared with the method, the time required for cooling to the coil temperature that can be processed in the next process is shortened, so that the delivery time to the customer can also be shortened.
In addition, since the coil 2 is continuously cooled in this facility, the coil temperature after cooling can be obtained by calculation based on the coil temperature at the start of cooling and the residence time in the water tank 1, so that it is conventional. It is not necessary to construct a large-scale temperature management system in a large coil yard.

Further, if the entire aquarium 1 including the moving body 9, the lifting cylinder 10, the movable skid 11 and the like is covered, it is possible to prevent the water vapor from filling the equipment environment. However, the corrosion of the building itself can be minimized as compared with the conventional case. Therefore, the repair cost of a building can be suppressed more than before.
In this embodiment, the coil 2 before cooling is carried in to the carry-in position by the carry-in carriage 4 and the coil 2 after cooling is carried out to the carry-out position by the carry-out carriage 6. However, the present invention is not limited to this. That is, if the carry-in position or the carry-out position is not an environment filled with water vapor, a crane may be used for carrying in to the carry-in position or carrying out from the carry-out position.

Moreover, in this embodiment, although the rail 8 is laid on the side wall upper surface of the width direction both ends which comprise the water tank 1, it is not limited to this. In short, since the moving bodies 9 need only be able to advance and retreat along the row direction, the rails 8 may be laid on a structure other than the water tank 1, such as an indoor floor surface.
In addition, the quantity, size, shape, and the like of each component can be arbitrarily changed without departing from the spirit of the present embodiment.

DESCRIPTION OF SYMBOLS 1 Water tank 2 Coil 3 Fixed skid 4 Carry-in cart 5 Carry-in skid 6 Carry-out cart 7 Carry-out skid 8 Rail 9 Moving body 10 Lifting cylinder 11 Movable skid 12 Horizontal frame 13 Vertical frame 14 Skid frame

Claims (4)

A water tank that stores cooling water and is capable of immersing a plurality of coils along a predetermined arrangement direction in a horizontal plane;
A plurality of fixed skids disposed in the water tank along the row direction and capable of being held in a state in which the coil is immersed;
A carry-in skid capable of holding the coil before being carried into the water tank at a carry-in position outside the water tank on one side in the row direction;
An unloading skid capable of holding the coil after unloading from the water tank at the unloading position on the other side of the row direction and outside the water tank;
Outside the cooling water stored in at least the water tank, a plurality of moving bodies arranged along the row direction and capable of moving back and forth along the row direction,
A movable skid capable of moving up and down and holding the coil in a state supported by each of the moving bodies,
By moving the movable body forward and backward, and raising and lowering the movable skid, between the loading skid and the fixed skid, between the fixed skids, and between the fixed skid and the unloading skid, A continuous coil cooling apparatus, wherein the coil is moved in order from one to the other. The fixed skid, the carry-in skid, and the carry-out skid hold an axial center of the coil,
The continuous coil cooling apparatus according to claim 1, wherein the movable skid holds both ends of the coil in the axial direction. The carry-in skid is mounted on a carry-in carriage that carries the coil into the carry-in position,
The continuous coil cooling apparatus according to claim 1 or 2, wherein the carry-out skid is mounted on a carry-out carriage that carries out the coil from the carry-out position. The movable skid is configured to be vertically movable by expansion and contraction of an expansion / contraction mechanism interposed between the movable body,
The continuous coil cooling device according to any one of claims 1 to 3, wherein the expansion and contraction mechanism is disposed at least outside the cooling water stored in the water tank.

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