JP5584526B2 - Electromagnetic damping device for molten metal plating equipment - Google Patents

Description

  The present invention relates to an electromagnet damping device for correcting the shape and damping of the strip in a molten metal plating facility for performing metal plating on a strip of magnetic material.

  In a molten metal plating facility, a strip of magnetic material (a strip such as a steel plate) is continuously immersed in molten metal such as molten zinc or molten aluminum stored in a pot, and the molten metal is applied to the surface of the strip. After depositing, the strip is pulled up from the molten metal in the pot. Then, the wiping gas is blown from the wiping nozzle to the strip in the ascending process, thereby removing the excess amount of the molten metal adhering to the surface of the strip and adjusting the amount of adhesion of the molten metal.

  However, the strip may be warped or vibrated due to the action of pulling up the strip from the molten metal in the pot or the tension acting on the strip. When such warpage or vibration occurs in the strip, the distance between the strip and the wiping nozzle changes, and the blasting state of the wiping gas on the strip does not become uniform, and the amount of molten metal adhering to the strip may become uneven. There is.

  For this reason, it is common for a molten metal plating facility to be equipped with an electromagnet damping device. This electromagnet damping device is used to correct the strip warpage (shape correction) and to suppress vibration during the ascending process. It is like that.

  FIG. 21 is a cross-sectional view of an electromagnet damping device of a conventional molten metal plating facility. As shown in the figure, the electromagnet vibration damping device 1 has a configuration in which an electromagnet 3 and a position sensor 4 are installed inside a rectangular parallelepiped housing 2. The position sensor 4 detects the position of the strip 6. The electromagnet 3 includes an iron core 3a and a coil 3b wound around the iron core 3a. Therefore, the electromagnet 3 generates an electromagnetic force when a current is supplied to the coil 3b by power feeding from a power feeding device (not shown), and the shape of the strip 6 is corrected and damped by this electromagnetic force.

  At this time, in order to prevent the temperature of the electromagnet 3 from rising above the allowable temperature, the electromagnet vibration damping device 1 has a water jacket 5 attached to the back plate 2a of the housing 2 and is cooled. The electromagnet 3 is cooled by the cooling water 7 supplied into the water jacket 5 from a water supply device (not shown). The coil 3b is covered with an insulating material, and is molded with a resin molding material. Since these insulating material and molding material are relatively vulnerable to heat, it is necessary to cool the electromagnet 3.

In addition to the water cooling method as described above, although not shown in the drawings, an electromagnet vibration damping device that employs an air cooling method has been conventionally known.
As prior art documents disclosing electromagnet damping devices, for example, there are the following.

JP 2009-179834 A

  However, since the conventional electromagnetic damping device 1 adopting the water cooling system requires installation of a water jacket 5 and a water supply / drainage pipe, the configuration of the apparatus is complicated and the scale of the apparatus is increased. In the case of leakage, the leaked water may be scattered to the molten metal in the pot, resulting in the occurrence of a disaster.

  On the other hand, if the air cooling method is adopted, problems of the water cooling method such as cooling water leakage do not occur. However, in the conventional air cooling method, the cooling air flow path has not been devised, and the configuration is such that the cooling air is simply introduced into the housing, so that sufficient cooling performance may not be obtained for the electromagnet. there were.

  Therefore, in view of the above circumstances, the present invention adopts a gas cooling method such as an air cooling method to solve the problems of the water cooling method as described above, and can exhibit sufficient cooling performance for the electromagnet. An object is to provide an electromagnet damping device for a molten metal plating facility.

An electromagnet damping device for a molten metal plating facility according to a first aspect of the present invention that solves the above-described problem is provided in a molten metal plating facility that applies metal plating to a strip of magnetic material, and an electromagnetic force works in a direction perpendicular to the strip. in as a by electromagnetic force of the electromagnet which is provided in the housing, an electromagnet vibration damping device for performing straightening and damping of the strip,
A cooling gas nozzle configured using a part of the surface of the electromagnet;
A guide plate for guiding the cooling gas ejected from the cooling gas nozzle so as to flow along the periphery of the electromagnet;
A cooling gas discharge port for discharging the cooling gas guided by the guide plate;
I have a,
The cooling gas nozzle includes any one of the four side surfaces of the electromagnet, and a nozzle member provided along the one side surface, and the cooling gas inlet is the electromagnet. The cooling gas outlet is located on the front side, which is the surface facing the band plate side of the electromagnet, in the direction toward the band plate. On the other hand, the cooling gas is jetted in three directions, ie, a front direction and a bilateral direction.
The guide plate has a first guide plate, a second guide plate, and a third guide plate,
The first guide plate guides the cooling gas ejected in the forward direction from the cooling gas ejection port so as to flow along the front surface of the electromagnet,
The second guide plate guides the cooling gas ejected from the cooling gas ejection port in the both side directions so as to flow along the other two side surfaces of the side surfaces of the electromagnet,
The third guide plate transmits the cooling gas guided by the first guide plate and the cooling gas guided by the second guide plate to another one of the side surfaces of the electromagnet. It is a structure that guides to flow along,
The cooling gas discharge port is provided on the back side of the electromagnet, and is configured to discharge the cooling gas guided by the third guide plate .

Moreover, the electromagnet damping device of the molten metal plating facility of the second invention is the electromagnet damping device of the molten metal plating facility of the first invention.
The first guide plate is a front plate of the housing;
The third guide plate is a side plate of the housing;
It is characterized by.

The electromagnet damping device for the molten metal plating facility of the third invention is the electromagnet damping device for the molten metal plating facility of the first or second invention,
A fourth guide plate is provided for guiding the cooling gas discharged from the cooling gas discharge port so as to flow along the back plate of the housing at a position corresponding to the electromagnet.

Moreover, the electromagnet damping device of the molten metal plating facility of the fourth invention is the electromagnet damping device of any one of the first to third inventions of the molten metal plating facility,
A position sensor for measuring the position of the strip is provided in the housing.
A configuration in which a part of the cooling gas ejected from the cooling gas ejection port flows into a space in which the position sensor is provided through a gap between the cooling gas ejection port and the first guide plate It is characterized by being.

An electromagnet damping device for a molten metal plating facility according to a fifth aspect of the invention is the electromagnet damping device for any one of the first to fourth inventions,
An exhaust temperature sensor for detecting the temperature of the cooling gas discharged from the cooling gas discharge port;
Based on the temperature detection information of the exhaust gas temperature sensor, the flow rate adjustment of the cooling gas flowing to the cooling gas nozzle, the current flow to the electromagnet, or the flow adjustment of the cooling gas and the current adjustment It is characterized by that.

An electromagnet damping device for a molten metal plating facility according to a sixth aspect of the present invention is the electromagnet damping device for any one of the first to fifth inventions,
A surface temperature sensor for detecting the temperature of the surface of the electromagnet;
Based on temperature detection information of the surface temperature sensor, adjustment of the flow rate of the cooling gas flowing to the cooling gas nozzle, adjustment of the current flowing to the electromagnet, or adjustment of the flow rate of the cooling gas and adjustment of the current; It is characterized by that.

According to the electromagnet damping device of the molten metal plating facility of the first aspect of the present invention, the apparatus is installed in a molten metal plating facility that applies metal plating to the strip of magnetic material so that the electromagnetic force acts in a direction perpendicular to the strip. a manner by electromagnetic force of the electromagnet which is provided in the housing, the electromagnetic damping device for performing straightening and damping of the strip, and cooling gas nozzle configured by using a part of the surface of said electromagnet, said cooling It has a guide plate that guides the cooling gas ejected from the gas nozzle so as to flow along the periphery of the electromagnet, and a cooling gas discharge port that discharges the cooling gas guided by the guide plate. Therefore, by implementing a gas cooling method using a cooling gas nozzle that uses a part of the surface of the electromagnet, it is possible to simplify the cooling gas piping equipment and reduce equipment costs, and By cooling gas is guided to flow along the periphery of the electromagnet by id plate can exhibit a sufficient cooling performance for the electromagnet. And since it is a gas cooling system, the occurrence of a disaster due to the leakage of cooling water can be avoided by preventing the occurrence of leakage of cooling water, and the safety is improved.

Further, according to the electromagnet damping apparatus for molten metal plating equipment of the first aspect of the invention, before Symbol cooling gas nozzle, and any one side of the four sides of the electromagnets, disposed along the one side And a cooling gas inflow port is located on the back side of the electromagnet facing away from the band plate , and a cooling gas outlet is located on the band plate of the electromagnet. The first guide plate is the first guide plate as the guide plate, and is located on the front side, which is a surface facing the side, and is configured to eject cooling gas in three directions of the front direction and the two side directions that are directed to the strip plate. , A second guide plate and a third guide plate, and the first guide plate flows the cooling gas ejected forward from the cooling gas ejection port along the front surface of the electromagnet. The second guide plate is guided by the cooling gas jet The cooling gas ejected from the mouth in the both side directions is guided so as to flow along the other two side surfaces of the side surfaces of the electromagnet, and the third guide plate is guided by the first guide plate. The cooling gas that has been guided and the cooling gas that has been guided by the second guide plate are guided so as to flow along the other one of the side surfaces of the electromagnet, and the cooling gas Since the discharge port is provided on the back side of the electromagnet and discharges the cooling gas guided by the third guide plate, the discharge port is formed by a cooling gas nozzle using one side of the electromagnet. By implementing the gas cooling system, it is possible to simplify the cooling gas piping equipment and reduce the equipment cost, and the first guide plate, the second guide plate, and the third guide plate can reduce the cooling cost. There by guiding to flow along the periphery of the electromagnet, it is possible to exhibit a sufficient cooling performance for the electromagnet. And since it is a gas cooling system, the occurrence of a disaster due to the leakage of cooling water can be avoided by preventing the occurrence of leakage of cooling water, and the safety is improved.

According to the electromagnet damping device of the molten metal plating facility of the second invention, in the electromagnet damping device of the molten metal plating facility of the first invention, the first guide plate is a front plate of the casing, Since the third guide plate is a side plate of the housing, the same effect as the first invention can be obtained, and the front plate of the housing is used as the first guide plate, By using the side plate of the housing as the third guide plate, the device configuration can be further simplified.

According to the electromagnet damping device of the molten metal plating facility of the third invention, in the electromagnet damping device of the molten metal plating facility of the first or second invention, the cooling gas discharged from the cooling gas discharge port is transferred to the electromagnet. Is provided with a fourth guide plate that guides the gas flow along the back plate of the housing, and the back side of the electromagnet is also cooled by the cooling gas guided by the fourth guide plate. Cooling performance can be further improved.

According to the electromagnet damping device of the molten metal plating facility of the fourth aspect of the invention, in the electromagnet damping device of the molten metal plating facility of any one of the first to third inventions, the position of the strip is located in the casing. A position sensor for measurement is provided, and a part of the cooling gas ejected from the cooling gas ejection port passes through a gap between the cooling gas ejection port and the first guide plate, and the position sensor The position sensor can be cooled simultaneously with the cooling of the electromagnet.

According to the electromagnet damping device of the molten metal plating facility of the fifth invention, in the electromagnet damping device of any one of the first to fourth inventions, the cooling gas discharged from the cooling gas discharge port An exhaust temperature sensor for detecting the temperature of the exhaust gas, and based on temperature detection information of the exhaust gas temperature sensor, adjustment of the flow rate of the cooling gas flowing to the cooling gas nozzle, adjustment of the current flowing to the electromagnet, or the cooling gas Therefore, it is possible to more reliably maintain the electromagnet below the allowable temperature and prevent the electromagnet from being damaged due to excessive temperature rise. In addition, compared to the case where the cooling gas is supplied in a fixed amount, there is no possibility of causing excessive cooling or insufficient cooling, so that more reliable and energy-saving cooling is possible.

According to the electromagnet damping device of the molten metal plating facility of the sixth aspect of the invention, in the electromagnet damping device of any one of the first to fifth inventions, the surface temperature for detecting the surface temperature of the electromagnet A sensor, and based on temperature detection information of the surface temperature sensor, adjustment of the flow rate of the cooling gas flowing to the cooling gas nozzle, adjustment of the current flowing to the electromagnet, or adjustment of the flow rate of the cooling gas and the current Since it is characterized in that the adjustment is made, the temperature adjustment accuracy of the electromagnet is improved by adjusting the flow rate and current of the cooling gas based on the temperature detection information of the surface temperature sensor, and the amount of cooling gas is further increased. It can also be reduced.

1 is a schematic diagram of a molten metal plating facility to which an electromagnet vibration damping device according to Embodiment 1 of the present invention is applied. It is sectional drawing (AA arrow sectional drawing of FIG. 3) of the front side of the said electromagnet damping device. It is sectional drawing by the side of the said electromagnet damping device (BB sectional view taken on the line in FIG. 2). It is sectional drawing by the side of the said electromagnet damping device (CC sectional view taken on the line of CC in FIG. 2). It is sectional drawing (DD sectional view taken on the line of FIG. 2) of the side surface side of the said electromagnet damping device. It is sectional drawing by the side of the said electromagnet damping device (cross-sectional view along the EE line of FIG. 2). FIG. 5 is a cross-sectional view (a cross-sectional view taken along line FF in FIG. 2) on the side surface side of the electromagnet vibration damping device. It is a reverse view (G direction arrow line view of FIG. 2) of the said electromagnet damping device. It is sectional drawing of the side surface side of the electromagnet damping device which concerns on Example 2 of Embodiment of this invention. It is a block diagram of the electromagnet damping device which concerns on Example 3 of Embodiment of this invention. It is a graph which shows the relationship between the cooling gas flow rate and each part temperature rise amount in the said electromagnet damping device. It is a block diagram of the electromagnet damping device which concerns on Example 4 of Embodiment of this invention. It is a graph which shows the relationship between the cooling gas flow rate and each part temperature rise amount in the said electromagnet damping device. It is sectional drawing (HH arrow directional cross-sectional view of FIG. 15) of the front side of the electromagnet damping device which concerns on Example 5 of this invention. It is sectional drawing by the side of the said electromagnet damping device (II sectional view taken on the line of FIG. 14). It is sectional drawing by the side of the said electromagnet damping device (JJ arrow directional cross-sectional view of FIG. 14). It is sectional drawing by the side surface side of the said electromagnet damping device (sectional view taken on line KK of FIG. 14). It is sectional drawing by the side of the said electromagnet damping device (LL sectional view taken on the line of FIG. 14). It is sectional drawing by the side of the said electromagnet damping device (MM sectional view taken on the line of FIG. 14). It is a back view (N direction arrow view of FIG. 15) of the said electromagnet damping device. It is sectional drawing by the side of the conventional electromagnet damping device.

  Embodiments of the present invention will be described below in detail with reference to the drawings.

<Embodiment 1>
As shown in FIG. 1, the molten metal plating facility 10 includes a pot 12, a sink roll 13, a support roll 14, a wiping nozzle 15, and the like, and further includes an electromagnet damping device 16 according to Embodiment 1 of the present invention. ing.

  In the pot 12, a molten metal 11 such as molten zinc or molten aluminum kept at a high temperature is stored. A strip of magnetic material (a strip plate such as a steel plate) 17 is conveyed obliquely downward and continuously immersed in the molten metal 11 in the pot 12. The sink roll 13 is disposed in the pot 12, and a strip 17 immersed in the molten metal 11 in the pot 12 is sprinkled thereon, and the strip 17 is turned vertically upward. The strip 17 whose direction has been changed by the sink roll 13 is supported by a support roll 14 disposed in the pot 12 and pulled up vertically from the molten metal 11 in the pot 12. The wiping nozzle 15 is disposed above the pot 12, and by blowing wiping gas to the strip 17 in the ascending process, the excess of the molten metal 11 adhering to the surface of the strip 17 is removed, The adhesion amount of the molten metal 11 is adjusted.

  The electromagnet damping device 16 is disposed above the wiping nozzle 15 and corrects the warp (shape correction) and vibrations of the strip 17 during the ascending process. As a result, the distance between the strip 17 and the wiping nozzle 15 is constant, and the spraying state of the wiping gas onto the strip 17 becomes uniform, so that the amount of the molten metal 11 attached to the strip 17 becomes uniform.

  Hereinafter, the configuration of the electromagnet vibration damping device 16 will be described with reference to FIGS.

  As shown in FIGS. 2 to 8, the electromagnet vibration damping device 16 has a configuration in which an electromagnet 22 and a position sensor 29 are installed inside a rectangular parallelepiped housing 21. The position sensor 29 is fixed to the back plate 21c of the housing 21, and detects the position of the front strip 17 (FIG. 3).

  The electromagnet 22 includes an iron core 22 a and a coil 22 b, and is fixed to the back plate 21 c of the housing 21 with bolts 26. The iron core 22a is formed of a silicon steel plate, and protrudes along the rear portion 22a-1 along the vertical direction of the housing 21 and the front-rear direction of the housing 21 (the left-right direction in FIG. 2) from the rear portion 22a-1. The projections 22a-2, 22a-3, and 22a-4 are formed, and the shape of the side view (FIG. 3) is E-shaped. The coil 22b is wound around the central convex portion 22a-3 of the iron core 22a and is fitted between the convex portions 22a-2 and 22a-3 and between the convex portions 22a-3 and 22a-4. Therefore, the electromagnet 22 generates an electromagnetic force by causing a current to flow through the coil 22b by power feeding from a power feeding device (not shown), and the electromagnetic force corrects the shape of the strip 17 and suppresses vibration.

  At this time, the electromagnet 22 generates heat, but the coil 22b is covered with an insulating material, and is molded with a resin molding material. Since these insulating material and molding material are relatively weak against heat, the electromagnet It is necessary to cool 22.

  Therefore, in order to prevent the temperature of the electromagnet 22 from rising above the allowable temperature (heat-resistant temperature of the insulating material or the mold material), the electromagnet damping device 16 cools the electromagnet 22 by a gas cooling method (air cooling method). . Although the water cooling method has a higher cooling capacity, the water cooling method has the above-mentioned problems. Therefore, the air cooling method is adopted in the present invention, and the gas cooling method (air cooling method) exhibits a sufficient cooling capacity. In order to be able to do this, the following devices have been devised.

  In other words, the electromagnet vibration damping device 16 uses a part of the surface of the electromagnet 22 as a cooling gas nozzle 23 and the cooling gas (cooling air) ejected from the cooling gas nozzle 23 around the electromagnet 22 (surface). The first to third guide plates 21a, 24, 21b that guide the gas so as to flow along, and the cooling gas discharge port 25 that discharges the cooling gas guided by the guide plates 21a, 24, 21b. ing. The first guide plate 21 a is a front plate of the housing 21, and the third guide plate 21 b is a side plate of the housing 21.

  The cooling gas nozzle 23 includes one of the four side surfaces 22c, 22d, 22e, and 22f of the electromagnet 22 and nozzle members 27a and 27b provided along the one side surface 22c. It is. The side surface 22c is a side surface of the iron core 22a (convex portion 22a-4). The side surfaces 22d and 22e are the left and right surfaces of the electromagnet 22, that is, the left and right surfaces of the coil 22b. The side surface 22f is a side surface of the iron core 22a (convex portion 22a-2).

  The nozzle member 27a has a flat plate shape, and is disposed horizontally in parallel with the side surface 22c of the electromagnet 22. The rear end is fixed to the back plate 21c of the housing 21, while the tip 27a-1 is the first. 1 guide plate (front plate of the casing 21) 21a. A gap 28 having a width δ is provided between the tip 27a-1 of the nozzle member 27a and the first guide plate (front plate of the housing 21) 21a. The pair of nozzle members 27b are elongated plate-shaped, interposed between the side surface 22c of the electromagnet 22 and the nozzle member 27a, and have an interval in the width direction of the casing 21 (left and right direction in FIG. 1). doing. Therefore, the nozzle member 27a, 27b and the side surface 22c of the electromagnet 22 form a cooling gas nozzle 23 having a channel having a rectangular cross-sectional shape.

  The cooling gas inlet 23 a of the cooling gas nozzle 23 is formed on the back plate 21 c of the housing 21 and is located on the back side of the electromagnet 22.

  2, 3, 4, and 6, the flow of the cooling gas in each part of the electromagnet damping device 16 is indicated by dotted arrows.

  A cooling gas (cooling air) supplied from a cooling gas supply device (not shown) flows into the cooling gas nozzle 23 from the cooling gas inlet 23 a and flows through the cooling gas nozzle 23 along the side surface 22 c of the electromagnet 22.

  On the other hand, the cooling gas outlet 23b of the cooling gas nozzle 23 is positioned on the front side of the electromagnet 22, and the cooling gas flowing through the cooling gas nozzle 23 is jetted in three directions, the front direction and the both side directions. It has become. More specifically, the tip 27b-1 of the nozzle member 27b is located in front of the tip 27a-1 of the nozzle member 27a by a distance l. Therefore, the cooling gas nozzle 23b of the cooling gas nozzle 23 is not only opened in the forward direction (the direction of the first guide plate 21a), but also in the left and right side directions (the direction of the left and right second guide plates 24). In addition, the cooling gas is blown out not only in the forward direction but also in both directions. In addition, the ratio of the ejection amount of the front direction and the both sides can be adjusted by adjusting the length of the distance l.

  The first guide plate (the front plate of the casing 21) 21a causes the cooling gas ejected forward from the cooling gas outlet 23b of the cooling gas nozzle 23 along the front face 22g of the electromagnet 22 (front face of the coil 22b). Guide it to flow. At this time, the front 22g side of the electromagnet 22 is cooled by the cooling gas guided by the first guide plate 21a.

  Each of the pair of second guide plates 24 is curved in accordance with the curved side surfaces 22d and 22e of the electromagnet 22 (coil 22b), and the ends are fixed to both ends of the nozzle member 27a. Has been. Then, the second guide plate 24 is configured so that the cooling gas jetted from the cooling gas outlet 23b of the cooling gas nozzle 23 in both directions is respectively left and right side surfaces (the left and right side surfaces of the coil 22b) 22d and 22e. Guide to flow along. At this time, the both side surfaces 22 d and 22 e of the electromagnet 22 are cooled by the cooling gas guided by the second guide plate 24.

  The third guide plate (side plate of the housing 21) 21 b is cooled by the cooling gas guided by the first guide plate (front plate of the housing 21) 21 a and the cooling guided by the second guide plate 24. The gas is guided so as to flow along the side surface 22f of the electromagnet 22, that is, the side surface 22f of the iron core 22a (convex portion 22a-2). At this time, the side 22f side of the electromagnet 22 is cooled by the cooling gas guided by the third guide plate 21b.

  The cooling gas discharge port 25 is formed in the back plate 21 c of the housing 21 and is located on the back side of the electromagnet 22. The cooling gas guided by the third guide plate (side plate of the casing 21) 21b is discharged from the cooling gas discharge port 25 to the outside of the casing 21 and released into the atmosphere.

  In addition, a part of the cooling gas ejected from the cooling gas nozzle 23b of the cooling gas nozzle 23 includes a cooling gas nozzle 23b (tip of the cooling gas nozzle 23), a first guide plate (front plate of the casing 21) 21a, Through the gap 28 between them, and flows into the space 30 in which the position sensor 29 is provided. Therefore, the position sensor 29 is cooled by the cooling gas flowing into the space 30. Thereafter, the cooling gas flows out of the space 30 through the gap 28 again.

  As described above, according to the electromagnet vibration damping device 16 of the first embodiment, the cooling gas nozzle 23 configured using a part of the surface (side surface 22c) of the electromagnet 22 and the cooling gas nozzle 23 are ejected. The first to third guide plates 21a, 24, 21b for guiding the cooling gas to flow along the periphery of the electromagnet 22, and the cooling gas guided by these guide plates 21a, 24, 21b are discharged. Since the cooling gas discharge port 25 is used, the cooling gas piping facility can be simplified and the facility cost can be reduced by implementing the gas cooling method by the cooling gas nozzle 23 using a part of the surface of the electromagnet 22. The electromagnet 2 is made possible by guiding the cooling gas to flow along the periphery of the electromagnet 22 by the first to third guide plates 21a, 24, and 21b. It is possible to exhibit a sufficient cooling performance for. And since it is a gas cooling system, the occurrence of a disaster due to the leakage of cooling water can be avoided by preventing the occurrence of leakage of cooling water, and the safety is improved.

  In addition, by using the front plate of the housing 21 as the first guide plate 21a and the side plate of the housing 21 as the third guide plate 21b, the apparatus configuration can be further simplified.

  Further, a part of the cooling gas ejected from the cooling gas ejection port 23b of the cooling gas nozzle 23 passes through the gap 28 between the cooling gas ejection port 23b and the first guide plate 21a, and a position sensor 29 is provided. Therefore, the position sensor 29 can be cooled simultaneously with the cooling of the electromagnet 22.

<Embodiment 2>
Based on FIG. 9, the electromagnet damping device 41 of the molten metal plating facility according to the second embodiment of the present invention will be described. In FIG. 9, the same parts as those of the electromagnet vibration damping device 16 of the first embodiment are given the same reference numerals, and the detailed description thereof is omitted. Further, the configuration of the molten metal plating facility is the same as that in FIG. 1, and the electromagnet damping device 41 is installed instead of the electromagnet damping device 16.

  As shown in FIG. 9, the electromagnet vibration damping device 41 of the second embodiment has a fourth guide plate 42 that is fixed to the back plate 21 c of the housing 21. The fourth guide plate 42 has a box shape, is provided along the back plate 21c of the housing 21 at a position corresponding to the electromagnet 22, covers the cooling gas discharge port 25, and has a cooling gas discharge port at the end. 42a is formed.

  Accordingly, the fourth guide plate 42 causes the cooling gas (cooling air) discharged from the cooling gas discharge port 25 of the housing 21 to flow along the back plate 21 c of the housing 21 at a position corresponding to the electromagnet 22. And discharged from the cooling gas discharge port 42a. At this time, the back side of the electromagnet 22 is cooled by the cooling gas guided by the fourth guide plate 42.

  The other configuration of the electromagnetic damping device 41 of the second embodiment is the same as that of the electromagnetic damping device 16 of the first embodiment.

  As described above, according to the electromagnet vibration damping device 41 of the second embodiment, the cooling gas discharged from the cooling gas discharge port 25 is moved along the back plate 21c of the housing 21 at a position corresponding to the electromagnet 22. The fourth guide plate 42 is provided to guide the flow so that the back side of the electromagnet 22 can be cooled by the cooling gas guided by the fourth guide plate 42. improves.

<Embodiment 3>
Based on FIG.10 and FIG.11, the electromagnet damping device 51 of the molten metal plating equipment based on Embodiment 3 of this invention is demonstrated. In FIG. 10, the same parts as those of the electromagnet vibration damping device 16 of the first embodiment are denoted by the same reference numerals, and the detailed description thereof is omitted. Further, the configuration of the molten metal plating facility is the same as that in FIG. 1, and the electromagnet damping device 51 is installed instead of the electromagnet damping device 16.

  As shown in FIG. 10, in the electromagnet damping device 51 of the third embodiment, an electromagnetic force is generated by a current flowing through the coil 22 b of the electromagnet 22 by the power feeding from the power feeding device 54, and the strip is generated by this electromagnetic force. 17 shape correction and vibration suppression.

  Further, cooling gas (cooling air) is supplied from the cooling gas supply device 55 to the cooling gas nozzle 23. The cooling gas supply device 55 includes a cooling gas supply tank 56, a cooling gas supply line 57, and a flow rate adjustment valve 58 provided in the cooling gas supply line 57. The cooling gas supply tank 56 stores high-pressure cooling gas (cooling air) compressed by a compressor (not shown), and this cooling gas is supplied to the cooling gas nozzle 23 via the cooling gas supply line 57 to cool the cooling gas. It flows into the cooling gas nozzle 23 from the gas inlet 23a. At this time, the flow rate of the cooling gas flowing to the cooling gas nozzle 23 is adjusted by the flow rate adjusting valve 58.

  In order to control the power feeding device 54 and the cooling gas supply device 55, the electromagnet vibration damping device 51 of the third embodiment has an exhaust temperature sensor 52 such as a thermocouple installed at the cooling gas discharge port 25. And a controller 53.

  The exhaust gas temperature sensor 52 detects the temperature Tg of the cooling gas (cooling air) discharged from the cooling gas discharge port 25, and uses the detection signal of this cooling gas temperature (discharge port gas temperature) Tg as temperature detection information. To 53. The controller 53 controls the flow rate of the cooling gas flowing to the cooling gas nozzle 23 by controlling the power supply device 54 and the flow rate adjustment valve 58 of the cooling gas supply device 55 based on the temperature detection information of the exhaust temperature sensor 52. Adjustment of the current flowing through the electromagnet 22 (coil 22b) is performed.

More specifically, for example, when the current value i flowing through the electromagnet 22 (coil 22b) is i = 3.5 (A), the cooling gas flow rate Q (m ³ / min) flowing through the cooling gas nozzle 23, and the electromagnet damping device The relationship with the temperature rise amount ΔT (° C.) of each part 51 is as illustrated in FIG. FIG. 11 shows one per electromagnet.
FIG. 11 shows a change in the allowable electromagnet temperature increase ΔTmax according to the cooling gas flow rate Q and a change in the exhaust gas temperature increase ΔTg. The electromagnet allowable temperature increase amount ΔTmax is a difference (Tmax−Ta) between the electromagnet allowable temperature Tmax and the temperature Ta around the electromagnet damping device 51. The exhaust gas temperature increase amount ΔTg is a difference (Tg−Ta) between the exhaust gas temperature Tg and the ambient temperature Ta.

Both the electromagnet allowable temperature rise amount ΔTmax and the discharge port gas temperature rise amount ΔTg are proportional to the square i ² of the current value i and also to the cooling gas flow rate Q. Therefore, tests and simulation calculations are performed in advance to grasp the relationship between the cooling gas flow rate Q at each current value i and the temperature rise amount ΔT of each part. Then, by adjusting the cooling gas flow rate Q and the current value i based on the relationship between the cooling gas flow rate Q and the temperature increase ΔT at each current value i thus grasped, the electromagnet 22 can be reduced to the allowable temperature increase ΔTmax or less. Adjust so that

  In the example of FIG. 11, for example, when the electromagnet allowable temperature rise ΔTmax is ΔTmax1 (300 ° C.), the current value i and the cooling gas flow rate Q are adjusted so that the exhaust gas temperature rise ΔTg is equal to or less than ΔTg1 (50 ° C.). do it.

  Therefore, in the controller 53, for example, the value of the exhaust gas temperature corresponding to the exhaust gas temperature increase ΔTg1 (50 ° C.) is set as the target temperature, and the detected value of the exhaust gas temperature Tg by the exhaust gas temperature sensor 52 is the target temperature. Thus, the maximum value of the current value i flowing through the electromagnet 22 (coil 22b) is limited. That is, when it is determined that the detected value of the outlet gas temperature Tg is higher than the target temperature based on the temperature detection information from the exhaust temperature sensor 54, the maximum current value i flowing from the power supply device 54 to the electromagnet 22 is determined. Decrease the value. When it is determined that the detected value of the detected outlet gas temperature Tg is lower than the target temperature based on the temperature detection information, the maximum value of the current value i flowing from the power feeding device 54 to the electromagnet 22 is increased.

  Further, the controller 53 adjusts the cooling gas flow rate Q by controlling the opening degree of the flow rate adjusting valve 58 so that the detected value of the exhaust gas temperature Tg by the exhaust temperature sensor 52 becomes the target temperature. That is, when it is determined that the detected value of the exhaust gas temperature Tg is higher than the target temperature based on the temperature detection information from the exhaust temperature sensor 52, the valve opening degree of the flow rate adjusting valve 58 is increased. If the control value is adjusted to increase the cooling gas flow rate Q and the detected value of the detected outlet gas temperature Tg is determined to be lower than the target temperature based on the temperature detection information, the flow rate adjustment valve The valve opening of 58 is controlled to be small, and the cooling gas flow rate Q is adjusted to decrease.

  In the case where cooling gas (cooling air) is supplied to the cooling gas nozzle 23 by a blower such as a cooling blower, the cooling gas nozzle 23 is controlled by controlling the output of the blower based on the temperature detection information of the exhaust temperature sensor 52. What is necessary is just to adjust the flow rate of the cooling gas to flow into.

  Other configurations of the electromagnetic damping device 51 of the third embodiment are the same as those of the electromagnetic damping device 16 of the first embodiment.

  As described above, according to the electromagnet vibration damping device 51 of the third embodiment, the exhaust gas temperature sensor 52 that detects the temperature of the cooling gas discharged from the cooling gas discharge port 25 is provided. Based on the detected temperature information, the flow rate of the cooling gas flowing to the cooling gas nozzle 23 and the current flowing to the electromagnet 22 are adjusted. It is possible to prevent the electromagnet 22 from being damaged due to excessive temperature rise. In addition, compared to the case where the cooling gas is supplied in a fixed amount, there is no possibility of causing excessive cooling or insufficient cooling, so that more reliable and energy-saving cooling is possible.

<Embodiment 4>
Based on FIG.12 and FIG.13, the electromagnet damping device 61 of the molten metal plating equipment based on Embodiment 4 of this invention is demonstrated. In FIG. 12, the same parts as those of the electromagnet damping devices 16 and 51 of the first and third embodiments are denoted by the same reference numerals, and the detailed description thereof is omitted. The power supply device 54 and the cooling gas supply device 55 are the same as those in the third embodiment. The configuration of the molten metal plating facility is the same as that in FIG. 1, and an electromagnet damping device 61 is installed instead of the electromagnet damping device 16.

  As shown in FIG. 12, the electromagnet damping device 61 of the fourth embodiment is provided with not only the exhaust temperature sensor 52 but also a surface temperature sensor 62 such as a thermocouple. The surface temperature sensor 62 is installed on the surface of the electromagnet 22 (in the illustrated example, the surface of the coil 22b), detects the surface temperature of the electromagnet 22, and outputs a detection signal of the surface temperature Tn to the controller 53 as temperature detection information. To do.

  The controller 53 controls the power supply device 54 and the flow rate adjustment valve 58 of the cooling gas supply device 55 based on the temperature detection information of the exhaust temperature sensor 52 and the surface temperature sensor 62, thereby allowing the cooling gas to flow to the cooling gas nozzle 23. The flow rate is adjusted, and the current flowing through the electromagnet 22 (coil 22b) is adjusted.

More specifically, for example, when the current value i flowing through the electromagnet 22 (coil 22b) is i = 3.5 (A), the cooling gas flow rate Q (m ³ / min) flowing through the cooling gas nozzle 23, and the electromagnet damping device The relationship between the temperature increase amount ΔT (° C.) of each part 51 is as illustrated in FIG. FIG. 13 shows one per electromagnet.
FIG. 13 shows the change of the allowable temperature increase ΔTmax of the electromagnet according to the cooling gas flow rate Q and the change of the discharge gas temperature increase ΔTg according to the cooling gas flow rate Q, and further the electromagnet according to the cooling gas flow rate Q. The change in the surface temperature rise amount ΔTn is also shown. The electromagnet surface temperature increase amount ΔTn is a difference (Tn−Ta) between the electromagnet surface temperature Tn and the ambient temperature Ta.

The allowable electromagnet temperature rise ΔTmax, the electromagnet surface temperature rise ΔTn, and the exhaust gas temperature rise ΔTg are all proportional to the square i ² of the current value i and also to the cooling gas flow rate Q. Therefore, tests and simulation calculations are performed in advance to grasp the relationship between the cooling gas flow rate Q at each current value i and the temperature rise amount ΔT of each part. Then, by adjusting the cooling gas flow rate Q and the current value i based on the relationship between the cooling gas flow rate Q and the temperature increase ΔT at each current value i thus grasped, the electromagnet 22 can be reduced to the allowable temperature increase ΔTmax or less. Adjust so that

  In the example of FIG. 13, for example, when the allowable electromagnet temperature rise ΔTmax is ΔTmax1 (300 ° C.), the electromagnet surface temperature rise ΔTn is equal to or less than ΔTn1 (200 ° C.), and the exhaust gas temperature rise ΔTg is ΔTg1 (50 ° C.). What is necessary is just to adjust the electric current value i and the cooling gas flow rate Q so that it may become below.

  Therefore, in the controller 53, for example, the value of the exhaust gas temperature corresponding to the exhaust gas temperature increase ΔTg1 (50 ° C.) is set as the target temperature, and the detected value of the exhaust gas temperature Tg by the exhaust gas temperature sensor 52 is the target temperature. Thus, the maximum value of the current value i flowing through the electromagnet 22 (coil 22b) is limited. That is, when it is determined that the detected value of the outlet gas temperature Tg is higher than the target temperature based on the temperature detection information from the exhaust temperature sensor 52, the maximum current value i flowing from the power supply device 54 to the electromagnet 22 is determined. When the value is decreased and the detected value of the detected outlet gas temperature Tg is determined to be lower than the target temperature based on the temperature detection information, the maximum value of the current value i flowing from the power supply device 54 to the electromagnet 22 Increase

  Further, the controller 53 adjusts the cooling gas flow rate Q by controlling the opening degree of the flow rate adjusting valve 58 so that the detected value of the exhaust gas temperature Tg by the exhaust temperature sensor 52 becomes the target temperature. That is, when it is determined that the detected value of the exhaust gas temperature Tg is higher than the target temperature based on the temperature detection information from the exhaust temperature sensor 52, the valve opening degree of the flow rate adjusting valve 58 is increased. If the control value is adjusted to increase the cooling gas flow rate Q and the detected value of the detected outlet gas temperature Tg is determined to be lower than the target temperature based on the temperature detection information, the flow rate adjustment valve The valve opening of 58 is controlled to be small, and the cooling gas flow rate Q is adjusted to decrease.

  Further, in the controller 53, for example, the value of the electromagnet surface temperature Tn corresponding to the electromagnet surface temperature increase ΔTn1 (200 ° C.) is set as the target temperature, and the detected value of the electromagnet surface temperature Tn by the surface temperature sensor 62 becomes the target temperature. Thus, the maximum value of the current value i flowing through the electromagnet 22 (coil 22b) is limited. That is, when it is determined that the detected value of the electromagnet surface temperature Tn is higher than the target temperature based on the temperature detection information from the surface temperature sensor 62, the maximum value of the current value i flowing from the power feeding device 54 to the electromagnet 22 is determined. When the detected value of the electromagnet surface temperature Tn is determined to be lower than the target temperature based on the temperature detection information, the maximum value of the current value i flowing from the power feeding device 54 to the electromagnet 22 is increased. .

  The controller 53 adjusts the cooling gas flow rate Q by controlling the opening of the flow rate adjustment valve 58 so that the detected value of the electromagnet surface temperature Tn by the surface temperature sensor 62 becomes the target temperature. That is, when it is determined that the detected value of the electromagnet surface temperature Tn is higher than the target temperature based on the temperature detection information from the surface temperature sensor 62, control is performed to increase the valve opening degree of the flow rate adjusting valve 58. Then, the cooling gas flow rate Q is adjusted so as to increase, and if it is determined that the detected value of the electromagnet surface temperature Tn is lower than the target temperature based on the temperature detection information, the valve of the flow rate adjustment valve 58 Control is performed to reduce the opening, and the cooling gas flow rate Q is adjusted to decrease.

  In addition, when supplying cooling gas (cooling air) to the cooling gas nozzle 23 by a blower such as a cooling blower, the output of the blower is controlled based on temperature detection information of the exhaust temperature sensor 52 and the surface temperature sensor 62. Thus, the flow rate of the cooling gas flowing to the cooling gas nozzle 23 may be adjusted.

  Further, when the adjustment value of the current value i and the cooling gas flow rate Q based on the temperature detection information of the exhaust temperature sensor 52 is different from the adjustment value of the current value i and the cooling gas flow rate Q based on the temperature detection information of the surface temperature sensor 62. For this, an adjustment amount for decreasing the current value i and an adjustment amount for increasing the cooling gas flow rate Q are selected. Or, for example, the average of the adjustment value of the current value i and the cooling gas flow rate Q based on the temperature detection information of the exhaust temperature sensor 52 and the adjustment value of the current value i and the cooling gas flow rate Q based on the temperature detection information of the surface temperature sensor 62. The value may be an adjustment amount of the actual cooling gas flow rate Q.

  Further, the current value i and the cooling gas flow rate Q are adjusted based not only on the temperature detection information of both the exhaust temperature sensor 52 and the surface temperature sensor 62 but only on the temperature detection information of the surface temperature sensor 62. May be.

  Other configurations of the electromagnet damping device 61 of the fourth embodiment are the same as those of the electromagnet damping devices 16 and 51 of the first and third embodiments.

  As described above, according to the electromagnet vibration damping device 61 of the fourth embodiment, not only the exhaust temperature sensor 52 but also the surface temperature sensor 62 for detecting the surface temperature of the electromagnet 22 is provided. Based on the temperature detection information of the temperature sensor 62, the flow rate of the cooling gas flowing to the cooling gas nozzle 23 and the current flowing to the electromagnet 22 are adjusted. By adjusting the flow rate and current of the cooling gas based on the information, the temperature adjustment accuracy of the electromagnet 22 is improved, and the amount of cooling gas can be further reduced.

<Embodiment 5>
Based on FIGS. 14-20, the electromagnet damping device 71 of the molten metal plating equipment based on Embodiment 5 of this invention is demonstrated. The fifth embodiment shows an example where the electromagnet and the position sensor are housed in separate housings. In this case, the position sensor is cooled by a cooling gas system separate from the electromagnet. The configuration of the molten metal plating facility is the same as that shown in FIG. 1, and an electromagnet damping device 71 is installed in place of the electromagnet damping device 16.

  As shown in FIGS. 14 to 20, the electromagnet damping device 71 has a configuration in which an electromagnet 73 is installed inside a rectangular parallelepiped casing 72.

  The electromagnet 73 includes an iron core 73 a and a coil 73 b, and is fixed to the back plate 72 a of the housing 72 with bolts 74. The iron core 73a is formed of a silicon steel plate, and protrudes along the rear part 73a-1 along the vertical direction of the casing 72 and the front-rear direction of the casing 72 (the horizontal direction in FIG. 15) from the rear part 73a-1. It has convex part 73a-2, 73a-3, 73a-4 which has the shape of a side view (FIG. 15) E-shape. The coil 73b is wound around the central convex portion 73a-3 of the iron core 73a, and is fitted between the convex portions 73a-2 and 73a-3 and between the convex portions 73a-3 and 73a-4. Therefore, the electromagnet 73 generates an electromagnetic force by causing a current to flow through the coil 73b by power feeding from a power feeding device (not shown), and the electromagnetic force corrects the shape of the strip 17 (FIG. 15) and controls vibration.

  At this time, the electromagnet 73 generates heat, but the coil 73b is covered with an insulating material, and is molded with a resin molding material. Since these insulating material and molding material are relatively weak against heat, the electromagnet It is necessary to cool 73.

  Therefore, in order to prevent the temperature of the electromagnet 73 from rising above the allowable temperature (heat-resistant temperature of the insulating material or the mold material), the electromagnet damping device 71 cools the electromagnet 73 by a gas cooling method (air cooling method). . Although the water cooling method has a higher cooling capacity, the water cooling method has the above-mentioned problems. Therefore, the air cooling method is adopted in the present invention, and the gas cooling method (air cooling method) exhibits a sufficient cooling capacity. In order to be able to do this, the following devices have been devised.

  That is, the electromagnet vibration damping device 71 uses a cooling gas nozzle 75 configured using a part of the surface of the electromagnet 73 and the cooling gas (cooling air) ejected from the cooling gas nozzle 75 around the electromagnet 73 (surface). First to third guide plates 72b, 76a, and 76b that guide the gas to flow along a cooling gas, and a cooling gas discharge port 77 that discharges the cooling gas guided by the guide plates 72b, 76a, and 76b. ing. The first guide plate 72 b is a front plate of the housing 72. The second guide plate 76a and the third guide plate 76b are integrated.

  The cooling gas nozzle 75 includes one side surface 73c of the four side surfaces 73c, 73d, 73e, and 73f of the electromagnet 73 and nozzle members 78a and 78b provided along the one side surface 73c. It is. The side surface 73c is a side surface of the iron core 73a (convex portion 73a-4). The side surfaces 73d and 73e are the left and right sides of the electromagnet 73, that is, the left and right sides of the coil 73b. The side surface 73f is a side surface of the iron core 73a (convex portion 73a-2).

  The nozzle member 78a has a flat plate shape, is disposed horizontally in parallel with the side surface 73c of the electromagnet 73, and the rear end portion is fixed to the back plate 72a of the housing 72 via the support member 79. The tip 27a-1 is located in the vicinity of the first guide plate (front plate of the housing 21) 21a. The pair of nozzle members 78b are elongated plate-like, fixed to the iron core 73a (convex portion 73a-4) of the electromagnet 73 and the nozzle member 73a, and the width direction of the casing 72 (left-right direction in FIG. 1). Have an interval. Therefore, the nozzle member 73a, 73b and the side surface 73c of the electromagnet 73 form a cooling gas nozzle 75 having a channel having a rectangular cross section.

  The cooling gas inlet 75 a of the cooling gas nozzle 75 is formed on the back plate 72 a of the housing 72 and is located on the back side of the electromagnet 73.

  In FIG. 14, FIG. 5, FIG. 16 and FIG. 18, the flow of the cooling gas in each part of the electromagnet damping device 71 is indicated by dotted arrows.

  A cooling gas (cooling air) supplied from a cooling gas supply device (not shown) flows into the cooling gas nozzle 75 from the cooling gas inlet 75 a and flows through the cooling gas nozzle 75 along the side surface 73 c of the electromagnet 73.

  On the other hand, the cooling gas nozzle 75b of the cooling gas nozzle 75 is located on the front side of the electromagnet 73, and the cooling gas flowing through the cooling gas nozzle 75 is jetted in three directions, the front direction and the both side directions. It has become. More specifically, the tip 78b-1 of the nozzle member 78b is located at a distance l from the tip 78a-1 of the nozzle member 78a. Accordingly, the cooling gas nozzle 75b of the cooling gas nozzle 75 is not only opened in the forward direction (the direction of the first guide plate 72b), but also on the left and right sides (the direction of the left and right second guide plates 76a). In addition, the cooling gas is blown out not only in the forward direction but also in both directions. In addition, the ratio of the ejection amount of the front direction and the both sides can be adjusted by adjusting the length of the distance l.

  The first guide plate (the front plate of the casing 72) 72b allows the cooling gas jetted forward from the cooling gas outlet 75b of the cooling gas nozzle 75 along the front surface 73g of the electromagnet 73 (front surface of the coil 73b). Guide it to flow. At this time, the front 73g side of the electromagnet 73 is cooled by the cooling gas guided by the first guide plate 72b.

  Each of the pair of second guide plates 76a is a curved portion in accordance with the curved side surfaces 73d and 73e of the electromagnet 73 (coil 73b), and the end portions are both end portions of the nozzle member 78a. It is fixed to each. Then, the second guide plate 76a has cooling gas jetted from the cooling gas outlet 75b of the cooling gas nozzle 75 in both directions, respectively, on the two left and right side surfaces (the left and right side surfaces of the coil 22b) 73d, 73e. Guide to flow along. At this time, the side surfaces 73d and 73e of the electromagnet 73 are cooled by the cooling gas guided by the second guide plate 76a.

  The third guide plate 76b is a flat plate portion parallel to the side surface (side surface of the iron core 73a) 73f of the electromagnet 73, and the cooling gas guided by the first guide plate (front plate of the casing 72) 72b. The cooling gas guided by the second guide plate 76 a is guided so as to flow along the side surface 73 f of the electromagnet 73. At this time, the side 22f side of the electromagnet 73 is cooled by the cooling gas guided by the third guide plate 76b.

  The cooling gas discharge port 77 is formed in the back plate 72 a of the casing 72 and is located on the back side of the electromagnet 73. The cooling gas guided by the third guide plate 76b is discharged from the cooling gas discharge port 77 to the outside of the casing 72 and released into the atmosphere.

  As described above, according to the electromagnet vibration damping device 71 of the fifth embodiment, the cooling gas nozzle 75 configured by using a part of the surface (side surface 73c) of the electromagnet 73 and the cooling gas nozzle 75 are ejected. The first to third guide plates 72b, 76a, and 76b for guiding the cooling gas to flow along the periphery of the electromagnet 73, and the cooling gas guided by the guide plates 72b, 76a, and 76b are discharged. Since it has a feature of having a cooling gas discharge port 77, the implementation of the gas cooling method by the cooling gas nozzle 75 using a part of the surface of the electromagnet 73 can simplify the cooling gas piping equipment and reduce the equipment cost. This is possible, and the first to third guide plates 72b, 76a, and 76b guide the cooling gas so that it flows along the periphery of the electromagnet 73. It is possible to exhibit a sufficient cooling performance for the stone 73. And since it is a gas cooling system, the occurrence of a disaster due to the leakage of cooling water can be avoided by preventing the occurrence of leakage of cooling water, and the safety is improved.

  Further, by using the front plate of the casing 72 as the first guide plate 72b, the apparatus configuration can be further simplified.

  In addition, you may combine suitably the structure of the said Embodiment 1-5. That is, for example, the third, fourth, and fifth embodiments may be configured to include the fourth guide plate as in the second embodiment. In the fifth embodiment, as in the third embodiment. A cooling gas flow rate and current adjustment mechanism or a cooling gas flow rate and current adjustment mechanism as in the fourth embodiment may be employed.

  In the first to fifth embodiments, an example in which one electromagnet is provided in the casing is shown. However, the present invention is not limited to this, and the present invention includes a plurality of electromagnets arranged in parallel in the casing. It can also be applied when

  The present invention relates to an electromagnet damping device for a molten metal plating facility, and is useful when applied to cooling an electromagnet of the electromagnet damping device with a cooling gas such as cooling air.

DESCRIPTION OF SYMBOLS 10 Molten metal plating equipment 11 Molten metal 12 Pot 13 Sink roll 14 Support roll 15 Wiping nozzle 16 Electromagnetic damping device 17 Strip (band)
21 Housing 21a First guide plate (front plate of housing)
21b Third guide plate (side plate of casing)
21c Back plate of housing 22 Electromagnet 22a Iron core of electromagnet 22a-1 Rear portion of iron core 22a-2, 22a-3, 22a-4 Convex portion of iron core 22b Electromagnetic coil 22c, 22d, 22e, 22f Electromagnet side surface 22g Electromagnet side Front face 23 Cooling gas nozzle 23a Cooling gas inlet 23b Cooling gas outlet 24 Second guide plate 25 Cooling gas outlet 26 Bolts 27a, 27b Nozzle members 27a-1, 27b-1 Nozzle member tip 28 Clearance 20 Position sensor 30 Space 41 Electromagnet Damping Device 42 Fourth Guide Plate 42a Cooling Gas Discharge Port 51 Electromagnet Damping Device 52 Exhaust Temperature Sensor 53 Controller 54 Power Feed Device 55 Cooling Gas Supply Device 56 Cooling Gas Supply Tank 57 Cooling Gas Supply Line 58 Flow Rate Adjustment Valve 61 Electromagnet damping device 62 Surface temperature sensor 71 Electromagnet damping device 72 Housing 72a Back plate 72b First guide plate (front plate of housing)
73 Electromagnet 73a Electromagnetic iron core 73a-1 Iron core rear 73a-2, 73a-3, 73a-4 Iron core convex 73b Electromagnet coil 73c, 73d, 73e, 73f Electromagnet side 73g Electromagnet front 74 Bolt 75 Cooling gas nozzle 75a Cooling gas inlet port 75b Cooling gas jet port 76a Second guide plate 76b Third guide plate 77 Cooling gas outlet port 78a, 78b Nozzle member 78a-1, 78b-1 Tip of nozzle member 79 Support member

Claims (6)

Is equipped in the molten metal plating equipment applying a metal plating to strip of magnetic material, the electromagnetic force of the electromagnet electromagnetic force is provided in the housing so as to be a direction that acts perpendicular to the strip, the strip In an electromagnetic damping device that corrects and suppresses the shape of
A cooling gas nozzle configured using a part of the surface of the electromagnet;
A guide plate for guiding the cooling gas ejected from the cooling gas nozzle so as to flow along the periphery of the electromagnet;
A cooling gas discharge port for discharging the cooling gas guided by the guide plate;
I have a,
The cooling gas nozzle includes any one of the four side surfaces of the electromagnet, and a nozzle member provided along the one side surface, and the cooling gas inlet is the electromagnet. The cooling gas outlet is located on the front side, which is the surface facing the band plate side of the electromagnet, in the direction toward the band plate. On the other hand, the cooling gas is jetted in three directions, ie, a front direction and a bilateral direction.
The guide plate has a first guide plate, a second guide plate, and a third guide plate,
The first guide plate guides the cooling gas ejected in the forward direction from the cooling gas ejection port so as to flow along the front surface of the electromagnet,
The second guide plate guides the cooling gas ejected from the cooling gas ejection port in the both side directions so as to flow along the other two side surfaces of the side surfaces of the electromagnet,
The third guide plate transmits the cooling gas guided by the first guide plate and the cooling gas guided by the second guide plate to another one of the side surfaces of the electromagnet. It is a structure that guides to flow along,
An electromagnet damping device for a molten metal plating facility, wherein the cooling gas discharge port is provided on the back side of the electromagnet and discharges the cooling gas guided by the third guide plate . In the electromagnet damping device of the molten metal plating facility according to claim 1 ,
The first guide plate is a front plate of the housing;
The third guide plate is a side plate of the housing;
Electromagnetic damping device for molten metal plating equipment. In the electromagnet damping device of the molten metal plating facility according to claim 1 or 2 ,
A molten metal plating comprising a fourth guide plate for guiding the cooling gas discharged from the cooling gas discharge port so as to flow along the back plate of the housing at a position corresponding to the electromagnet. Electromagnetic damping device for equipment. In the electromagnet damping device for a molten metal plating facility according to any one of claims 1 to 3 ,
A position sensor for measuring the position of the strip is provided in the housing.
A configuration in which a part of the cooling gas ejected from the cooling gas ejection port flows into a space in which the position sensor is provided through a gap between the cooling gas ejection port and the first guide plate An electromagnet vibration damping device for a molten metal plating facility. In the electromagnet damping device for a molten metal plating facility according to any one of claims 1 to 4 ,
An exhaust temperature sensor for detecting the temperature of the cooling gas discharged from the cooling gas discharge port;
Based on the temperature detection information of the exhaust gas temperature sensor, the flow rate adjustment of the cooling gas flowing to the cooling gas nozzle, the current flow to the electromagnet, or the flow adjustment of the cooling gas and the current adjustment An electromagnet damping device for a molten metal plating facility. In the electromagnet damping device for a molten metal plating facility according to any one of claims 1 to 5 ,
A surface temperature sensor for detecting the temperature of the surface of the electromagnet;
Based on temperature detection information of the surface temperature sensor, adjustment of the flow rate of the cooling gas flowing to the cooling gas nozzle, adjustment of the current flowing to the electromagnet, or adjustment of the flow rate of the cooling gas and adjustment of the current; An electromagnet damping device for a molten metal plating facility.

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