JPH0535846U - Convector plate - Google Patents

Abstract

(57) [Summary] [Constitution] A convector plate 20 having a disk-shaped appearance having a central hole 21, wherein a top surface side is open and a bottom surface 24 is a flat surface in contact with the top surface of the lower coil 2. The grooves 22 and the grooves 23, which are open on the lower surface side and whose upper surface 25 is a flat surface in contact with the bottom surface of the upper coil 2, are alternately formed in the circumferential direction via the partition walls 27. The groove serves as a flow path for the atmospheric gas. It is preferable to form a large number of holes on the bottom surface and the top surface of the groove. [Effect] Since the bottom surface and the top surface of the groove are in surface contact with the end surface of the coil, respectively, a sufficient contact area for the coil is secured and seizure is prevented. Further, since the atmospheric gas passing through the groove comes into direct contact with the upper surface and the bottom surface of the coil, excellent heating and cooling efficiency can be obtained.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a convector plate used in a coil annealing furnace for annealing a long steel sheet wound in a coil shape.

[0002]

[Prior Art]

 FIG. 4 shows a state in which processing is performed by a conventional general coil annealing furnace. The coil annealing furnace shown in FIG. 4 is a so-called bell type batch type furnace. Reference numeral 1 is a base, 2 is a coil to be treated, 3 is a convector plate, 4 is an inner case, and 5 is an inner case. The outer case, 6 is a blower for heating and cooling the coil by forcedly circulating atmospheric gas.

The above-mentioned convector plate 3 is interposed as a spacer between the two coils 2 and 2 in order to stack them, and the convector plate 3 is provided on the upper surface of the lower coil 2 or It is also used for heating and cooling the bottom surface of the upper coil 2.

That is, the convector plate 3 is formed into a disk shape having a central hole 7, and the inside gas of the convector plate 3 is radiated in the radial direction as shown by an arrow in FIG. The atmosphere gas passing through the convector plate 3 is brought into contact with the upper surface and the bottom surface of the coil 2 to enhance the heating and cooling efficiency. As shown in FIGS. 5 and 6, such a convector plate 3 has ribs 9 attached to the upper surface and the lower surface of a disk 8 having a central hole 7, respectively. It is most common to form a large number of spiral grooves 10 which serve as a flow passage for atmospheric gas by 9 and the disk 8.

[0005]

By the way, in the conventional convector plate 3 described above, since the bottom surface and the top surface of the coil 2 are only in line contact with the ribs 9, a large pressure is applied to their contact portions. As a result, the rib 9 may be seized on the top or bottom of the coil 2.

Therefore, as shown in FIG. 7, a convector plate 12 in which a closed flow passage 11 for atmospheric gas is formed by providing ribs 9 between three discs 8 and as shown in FIG. Further, a convector plate 13 in which a closed flow passage 11 is formed by a rib 9 between two discs 8 is also used. In these convector plates 12 and 13, the disk 8 and the coil 2 are in surface contact with each other, so that the contact surface pressure is reduced and seizure is prevented. There is a problem that sufficient heating and cooling efficiency cannot be obtained because the coil 2 does not come into direct contact with the top surface or the bottom surface and is only indirectly heated and cooled through the disk 8. ing.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a convector plate that can prevent seizure on a coil and can also obtain excellent heating and cooling efficiency.

[0008]

[Means for Solving the Problems]

 The present invention is a convector plate that is used between coils that are stacked vertically when annealing is performed by a coil annealing furnace in the state where coils of long steel plates are stacked vertically. It has a disk-shaped appearance with a central hole, and the top side is open and the bottom side is a flat surface that contacts the top side of the lower coil, and the bottom side is open and the top side is the top side. Grooves that are flat surfaces in contact with the bottom surface of the coil are alternately formed in the circumferential direction through the partition walls, and the outer and inner circumferential sides of these grooves are opened respectively, and these grooves are filled with the atmosphere gas. It is characterized by being used as a flow passage. In this case, it is preferable to form a large number of holes on the bottom surface and the top surface of the groove.

[0009]

[Action]

 Since the bottom surface or the top surface of each groove serving as a gas flow path comes into surface contact with the end surface of the coil, a sufficient contact area with the end surface of the coil is secured and seizure is prevented. Further, since the upper surface side or the lower surface side of each groove is open, the atmosphere gas passing through the groove directly contacts the bottom surface or the upper surface of the coil, and the coil is efficiently heated and cooled.

[0010]

【Example】

 Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing the outer appearance of a convector plate 20 of this embodiment, FIG. 2 is a plan view thereof, and FIG. 3 is an enlarged sectional view of a portion thereof. As shown in these figures, the convector plate 20 of this embodiment has a disk-shaped appearance having a central hole 21 like the conventional one, but has a radial shape with an open upper surface. Grooves 22 and radial grooves 23 whose lower surface is open are alternately formed in the circumferential direction via partition walls 27. The grooves 22 and 23 are also open on the outer peripheral side and the inner peripheral side, and both of these grooves 22 and 23 are gas flow passages through which atmospheric gas can flow. The bottom surface 24 of the groove 22 whose upper surface is open is a flat surface that contacts the upper surface of the lower coil 2, and the upper surface 25 of the groove 23 whose lower surface is open is the bottom surface of the upper coil 2. The grooves 22 and 23 have a flat surface in contact therewith, and a large number of holes 26 are formed in the bottom surface 24 and the upper surface 25 of each of the grooves 22 and 23.

In the convector plate 20 having the above structure, the bottom surface 24 and the top surface 25 of the grooves 22 and 23 are in surface contact with the top surface and the bottom surface of the coil 2, respectively, so that the contact area with the coil 2 is sufficient. Therefore, it is possible to reliably prevent the convector plate 3 from sticking to the coil 2 as in the case of using the conventional convector plate 3 shown in FIG.

In the convector plate 20 of the above embodiment, the groove 22 is open on the upper surface side, so that the atmospheric gas passing through the groove 22 directly contacts the bottom surface of the upper coil 2. Similarly, since the bottom surface side of the groove 23 is open, the atmospheric gas passing through the groove 23 directly contacts the upper surface of the coil 2 on the lower side, and moreover, the bottom surface 24 of the groove 22 and the upper surface of the groove 23. Since a large number of holes 26 are formed in the coil 26 and the atmospheric gas contacts the coil 2 through the holes 26, the convector plate 20 of the present embodiment can perform only indirect heating and cooling. The heating and cooling efficiency is sufficiently higher than that of the conventional one shown in FIG.

The convector plate 20 of the above embodiment can be manufactured, for example, by bending a heat-resistant metal. However, the members constituting the bottom surface 24, the upper surface 25, and the partition wall 27 are individually manufactured and the They may be assembled together or may be cast. Further, although the grooves 22 and 23 are radially provided in the above embodiment, the grooves 22 and 23 may be formed in a spiral shape as in the conventional one shown in FIG. Further, the size and the number of the holes 26 may be set appropriately, but the holes 26 may be omitted if unnecessary.

[0014]

[Effect of the device]

 As described in detail above, in the convector plate of the present invention, the upper surface side is open and the bottom surface is a flat surface that contacts the upper surface of the lower coil, and the lower surface side is open. In addition, a groove whose upper surface is a flat surface in contact with the bottom surface of the upper coil is alternately formed in the circumferential direction via a partition wall, and each groove serves as an atmosphere gas flow passage. Therefore, since the bottom surface and the top surface of each groove are in surface contact with the end surface of the coil, the contact area with respect to the coil is sufficiently ensured, and it is certainly prevented that the coil is seized. In other words, the atmospheric gas passing through the groove directly contacts the top surface and the bottom surface of the coil, so that excellent heating and cooling efficiency can be obtained. If holes are formed in the upper surface of the groove in contact with the bottom surface of the coil or the bottom surface of the groove in contact with the upper surface of the coil, the atmospheric gas contacts the coil through these holes, so that the heating and cooling efficiency can be further improved. There is an advantage that.

[Brief description of drawings]

FIG. 1 is a perspective view showing an appearance of a convector plate which is an embodiment of the present invention.

FIG. 2 is a plan view of the convector plate.

FIG. 3 is a partially enlarged sectional view of the convector plate.

FIG. 4 is a diagram showing a state where processing is performed by a conventional general coil annealing furnace.

FIG. 5 is a plan view showing an example of a conventional convector plate.

FIG. 6 is a partially enlarged sectional view of the convector plate.

FIG. 7 is a partially enlarged sectional view showing another conventional convector plate.

FIG. 8 is a partial enlarged sectional view showing still another conventional convector plate.

[Explanation of symbols]

 2 coil 20 convector plate 21 center hole 22 groove 23 groove 24 groove bottom surface 25 groove upper surface 26 hole 27 partition wall.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Toru Iura, Toru Iura 3-15-15 Toyosu, Koto-ku, Tokyo Ishikawajima Harima Heavy Industries, Ltd. Toni Technical Center (72) Hirotoshi Ishikawa 2 Hinodemachi, Iwakuni, Yamaguchi Prefecture No. 1 in Iwakuni Manufacturing Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. A convector plate that is used by being interposed between coils that are vertically stacked when an annealing process is performed in a coil annealing furnace in a state where coils of long steel plates are vertically stacked. It has a disk-shaped appearance with a central hole, and the top surface is open and the bottom surface is a flat surface that contacts the top surface of the lower coil, and the bottom surface is open and the top surface is the top A flat surface groove in contact with the bottom surface of the coil is alternately formed in the circumferential direction via a partition wall, and the outer peripheral side and the inner peripheral side of the groove are opened to form the groove as a flow path for the atmospheric gas. A convector plate characterized by what is done. 2. The convector plate according to claim 1, wherein a large number of holes are formed on each of the bottom surface and the top surface of the groove.