JP2567071Y2 - Tubular mold with built-in stirrer for electromagnetic stirring - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular mold with a built-in stirrer for electromagnetic stirring used for continuous casting, and more particularly to a structure for cooling a coil of a stirrer for electromagnetic stirring installed in a mold. The present invention relates to a tubular mold with a built-in stirrer for electromagnetic stirring.

[0002]

2. Description of the Related Art Tubular molds with a built-in stirrer for electromagnetic stirring are disclosed in Japanese Patent Publication Nos. 51-8535, 59-13297, and 62-68663, and are well known. .

[0003] The structure of the mold 25 is basically
As shown in the schematic diagram of FIG.
A water chamber 28 is provided in a space between the water chamber 28 and a stirrer 29 for electromagnetic stirring is installed in the water chamber 28, while a cooling water channel 30 of the inner wall 27 of the mold and a water chamber 28
A cooling water supply port 31 and a discharge port 32 are provided.

The cooling water in the mold 25 is used to cool the electromagnetic stirring stirrer 29, particularly the coil 33, and the mold inner wall 27. The flow of the cooling water is as shown by arrows in FIG. After being supplied into the mold 25 from the supply port 31, it is led to a cooling water introduction chamber 34 formed at the lower part of the mold 25,
Thereafter, the cooling water flows from the cooling water introduction chamber 34 through the cooling water passage 30 of the mold inner wall 27 from below to the drain chamber 35 above the mold 25,
In addition, the water chamber 28 of the stirrer 29 for electromagnetic stirring flows down from the drain chamber 35 from above, and is discharged from the discharge port 32.

Although not shown, the flow of the cooling water in the mold is such that after the cooling water is supplied from the supply port 31 into the mold 25, the water chamber 28 of the electromagnetic stirring stirrer 29 is first moved downward from above. And then flow through the cooling water passage 30 of the mold inner wall 27 (Japanese Patent Laid-Open No. 62-68663), or the mold inner wall 27 and the electromagnetic stirring stirrer 29 are cooled by separate flows.

[0006]

In the above-described tubular mold with a built-in stirrer for electromagnetic stirring, the stirrer for electromagnetic stirring 29 generally has a configuration in which a coil 33 is wound around a salient pole 37 of a tubular magnetic iron core 36. Because it is installed in a large space of
When trying to cool the coil 33 of the electromagnetic stirring stirrer 29 by the flow of the cooling water supplied from above or below the water chamber 28, the outer peripheral surface side of the coil 33, particularly the upper and lower ends,
Due to the existence of the upper and lower end surfaces of the tubular magnetic iron core 36, the flow tends to stagnate, and it is difficult to obtain a sufficient cooling capacity, and there is a concern that the coil 33 may be burned out.

The present invention has been made based on the above circumstances, and an object of the present invention is to provide a coil of an electromagnetic stirring stirrer installed in a water chamber, particularly on the outer peripheral side of upper and lower ends of the coil. An object of the present invention is to provide a tubular mold with a built-in stirrer for electromagnetic stirring that can be cooled effectively without causing stagnation.

[0008]

In order to achieve the above object, a tubular mold with a built-in stirrer for electromagnetic stirring according to the present invention is provided with a water chamber in a space between a casing and an inner wall of the mold . To the salient pole protruding inside the tubular magnetic core
In a tubular mold provided with an electromagnetic stirring stirrer wound with a coil , an annular bracket is fixed to the upper and lower surfaces of a tubular magnetic iron core of the electromagnetic stirring stirrer, and at least one side wall of the upper and lower annular brackets The cooling water distribution hole is formed in the casing, and a space formed between the casing , the tubular magnetic iron core and the upper and lower annular brackets is provided as a cooling water distribution chamber. And
The annular bracket may have a C-shaped cross section.

[0009]

In the present invention, since the annular brackets are fixed to the upper and lower surfaces of the tubular magnetic iron core of the electromagnetic stirring stirrer, there is no space that causes stagnation on the outer peripheral surfaces of the upper and lower ends of the coil. The space formed between the tubular magnetic iron core and the upper and lower annular brackets is used as the cooling water distribution chamber, so the salient poles and coils are only stored in the water chamber.
And this allows the spacing between the water chambers to be reduced,
Cooling water stagnates in a narrow space from top to bottom or bottom to top
In this way, the coil can be flowed without any wrinkles, and the outer peripheral surfaces of the upper and lower ends of the coil can be effectively cooled. In this case, as a preferred embodiment, the shape of the annular bracket is preferably a C-shaped cross section. The annular bracket having the C-shaped cross section is provided with the concave portion fixed outward and at least one of the side walls of the upper and lower annular brackets. By supplying the cooling water from the water holes formed in the (bottom wall of the concave portion), the outer peripheral surfaces of the upper and lower ends of the coil can be more effectively cooled.

Further, since the cooling water distribution chamber is formed inside the water chamber and on the outer peripheral surface of the upper and lower ends of the coil, the cooling water distribution chamber is formed as compared with the tubular mold formed above and below the water chamber. The length of the mold in the vertical direction can be reduced, and the whole can be formed into a compact tubular mold.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a longitudinal sectional view of a tubular mold with a built-in stirrer for electromagnetic stirring according to the present invention. In the figure, a water supply side duct 2 and a drain side duct 3 are disposed below a cylindrical casing 1, a cooling water intake 4 and a water supply chamber 5 are provided in the water supply side duct 2, and a water supply side duct 3 is provided in the drain side duct 3. Is provided with a drainage chamber 6 and a discharge port 7 for cooling water.

Further, a stirrer 11 installed at a predetermined interval in a water chamber 12 in which an electromagnetic stirring stirrer 11 formed on the outer periphery of the hollow mold inner wall 8 is installed inside the casing 1.
A cooling water passage 10 is formed by the inner wall 9 of the cooling water passage.

The electromagnetic stirring stirrer 11 includes a tubular magnetic iron core 14 having two or three pairs of opposed salient poles 13 projecting inward, a coil 15 wound around the salient poles 13, and a tubular magnetic iron The recesses fixed on the upper and lower surfaces of the core 14 include annular brackets 16 and 17 each having an outward C-shaped cross section, while the casing 1, the tubular magnetic iron core 14, and the upper and lower annular brackets are provided.
The space defined by the cooling water distribution chambers 18 and 17 is a cooling water distribution chamber 18. In this example, the lower annular bracket 17 side communicates with the water supply chamber 5, and a cooling water flow hole is formed on the side wall of the lower annular bracket 17.
19 are drilled.

The inner wall 8 of the casting mold includes a tuber mold 20 and a jacket 22 provided at a slight interval so as to form a cooling water passage 21 on its outer periphery. The upper end is a drainage channel 23 leading to the drainage chamber 6
The upper end is open to the drainage chamber 24, and the lower end is a cooling water passage.
Open to 10.

The flow of cooling water in the tubular mold with a built-in stirrer for electromagnetic stirring having the above-described structure flows as indicated by arrows in the figure. That is, the cooling water supplied from the intake port 4 of the water supply side duct 2 first flows through the water supply chamber 5 to the cooling water distribution chamber 18, and at the same time, the stirrer flows through the water chamber 12.
The water flows upward from below the lower portion 11 and reaches the upper end side of the cooling water passage 10 while sufficiently cooling the inside of the stirrer 11 at this time. Next, the cooling water that has reached the upper end side of the cooling water passage 10 is
After once flowing down the cooling water channel 10, it flows into the cooling water channel 21 from the lower end side of the cooling water channel 21 of the mold inner wall 8 and flows upward from below, and at this time the tuber mold 20 The molten metal poured into the inside reaches the upper end drainage chamber 24 while cooling, and then flows from the upper end drainage chamber 24 through the drainage channel 23 and the drainage chamber 6 to the discharge port 7 of the drain side duct 3.
From the system.

In the tubular mold with a built-in stirrer for electromagnetic stirring having the above structure, the tubular magnetic iron core of the stirrer 11 for electromagnetic stirring is used.
Since the 14 recess a C-shaped section of the annular brackets 16, 17 on the upper and lower surfaces of the are fixed to the outward, the outer peripheral surface side of the upper and lower ends of the coil 15 is hardly stagnation cooling water without space, tooth since the side wall of the duck under cyclic bracket 17 water passage holes 19 are drilled, cooling water from the water passage hole 19 is directly supplied to the outer peripheral surface side of the lower end portion of the coil 15 Rutotomoni, tubular magnetic iron core 14
And between the annular brackets 16 and 17 and the inner wall 9 of the stirrer 11
Since the flow without causing stagnation from the bottom to the top, the outer peripheral surface side of the upper and lower ends of the coil 15 are effectively cooled. A cooling water distribution chamber 18 formed by the casing 1, the tubular magnetic iron core 14, and the upper and lower annular brackets 16 and 17 is a water chamber.
Since it is formed inside 12 and on the outer peripheral surface of the upper and lower ends of the coil 15, the length of the tubular mold in the vertical direction can be shortened, and the tubular mold as a whole can be configured as a compact.

[0018]

As described above, according to the tubular mold with a built-in stirrer for electromagnetic stirring according to the present invention, the coils of the stirrer for electromagnetic stirring installed in the water chamber can be used especially for the outer peripheral surfaces of the upper and lower ends of the coil. The side can be cooled effectively without causing stagnation. Further, since the cooling water distribution chamber to the electromagnetic stirring stirrer is provided on the outer peripheral surface of the upper and lower ends of the coil in the water chamber, the entire tubular mold can be made compact.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a tubular mold with a built-in stirrer for electromagnetic stirring according to the present invention.

FIG. 2 is a longitudinal sectional view of a conventional tubular mold with a built-in stirrer for electromagnetic stirring.

[Explanation of symbols]

1: Cylindrical casing 2: Water supply side duct 3: Drainage side duct 4: Intake port 5: Water supply chamber 6: Drainage chamber 7: Discharge port 8: Inner wall of mold 9: Inner wall of stirrer for electromagnetic stirring 10: Cooling channel 11: Stirrer for electromagnetic stirring 12: water chamber 13: salient pole 14: tubular magnetic iron core 15: coil 16, 17: section C
-Shaped annular bracket 18: Cooling water distribution chamber 19: Water hole 20: Tuber mold 21: Cooling water channel 22: Jacket 23: Drainage channel 24: Top drainage chamber

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-327351 (JP, A) JP-A-59-45067 (JP, A) Jpn.

Claims (2)

(57) [Scope of request for utility model registration] 1. A water chamber is provided in a space between a casing and an inner wall of a mold , and a protrusion protruding inside a tubular magnetic core is provided in the water chamber.
In a tubular mold in which an electromagnetic stirring stirrer having a coil wound around a pole is installed, an annular bracket is fixed to the upper and lower surfaces of the tubular magnetic iron core of the electromagnetic stirring stirrer, and at least one of the upper and lower annular brackets The cooling water distribution hole is formed in the side wall of the cooling water distribution chamber while the space formed between the casing , the tubular magnetic iron core and the upper and lower annular brackets is provided. Tubular mold with built-in stirrer for electromagnetic stirring. 2. The tubular mold with built-in stirrer for electromagnetic stirring according to claim 1, wherein the annular bracket has a C-shaped cross section.