KR20220111840A - Opening and closing apparatus of vitrification cold crucible - Google Patents

Abstract

Provided is a melting furnace switch gear of vitrification equipment. The melting furnace switch gear of the vitrification equipment may comprise: a mounting unit located at an upper part of a melting furnace; and a rod unit installed on the mounting unit and opening and closing an outlet inside the melting furnace through up-and-down flow. The rod unit may include: an upper part rod body positioned outside the melting furnace; and a lower part rod body located inside the melting furnace and opening and closing the outlet inside the melting furnace. According to the melting furnace switch gear of the vitrification equipment, abnormal or non-periodic discharge of a molten material can be prevented.

Description

OPENING AND CLOSING APPARATUS OF VITRIFICATION COLD CRUCIBLE

The present invention relates to an opening and closing device for a melting furnace of a vitrification facility.

It is necessary to more stably process, store and manage radioactive waste from nuclear power generation. Among the methods of processing and storing hazardous waste, low-temperature melting furnace vitrification technology has been developed.

Low-temperature melting furnace vitrification technology uses an induction heating-type low-temperature melting furnace to burn hazardous waste, melt heavy metals to form a solidified glass together with glass, and isolate it by locking it in the glass structure and preventing leaching into the surrounding environment.

In such a low-temperature melting furnace, the high-temperature melt is completely discharged when the melt is discharged through an induction heating type discharge device. That is, the hot melt is continuously discharged even after the induction heating type discharge device is stopped. In addition, a situation in which discharge is impossible may occur due to the melt bridge phenomenon at the top of the induction heating type discharge device inside the melting furnace.

Korean Patent Laid-Open No. 10-1999-0074869

The problem to be solved by the present invention is to prevent abnormal or non-periodic discharge of melt by opening and closing the outlet with a water-cooled physical discharge means based on driving (eg, pneumatic, hydraulic, electric method, etc.) to a low-temperature melting furnace during operation of a vitrification facility. , to provide a melting furnace switchgear of a vitrification facility.

In addition, it is to provide a melting furnace opening/closing device of a vitrification facility capable of securing a flow path for normal discharge of the melt as a physical discharge means during a high-temperature melt discharge operation.

In addition, it is possible to periodically discharge the melt of the low-temperature melting furnace of the vitrification facility (eg, discharge the level of the internal melt by melting, etc.) to provide a melting furnace opening/closing device of the vitrification facility capable of long-term and continuous operation of the melting furnace.

In addition, it is to provide a melting furnace opening/closing device of a vitrification facility capable of securing safety in operation of the vitrification facility by responding to the melt bridge phenomenon around the outlet inside the low-temperature melting furnace during operation of the vitrification facility by physical means.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

A melting furnace opening/closing device of a vitrification facility according to an aspect of the present invention for achieving the above object includes: a holding unit located at the upper part of the melting furnace; and a rod unit installed on the holding unit and configured to open and close the outlet inside the melting furnace through vertical flow, wherein the rod unit includes an upper rod body positioned outside the melting furnace, and the inside of the melting furnace And, it may include a lower rod body for opening and closing the inner outlet of the melting furnace.

In addition, the lower rod body may include a bent portion bent in a diagonal direction, the bent portion extends downward toward the outlet, and an extension portion for opening and closing the outlet.

In addition, the rod unit opens and closes the discharge port with the end of the lower rod body, by contacting the end of the lower rod body with the discharge port, it is possible to block the discharge port.

In addition, the rod unit may open and close the outlet to the end of the lower rod body, and block the outlet through the solidified melt attached to the outside of the end of the lower rod body.

In addition, the holding unit is connected to the mounting body, the driving module provided on the mounting body, and the upper rod body, through an interlocking bar installed on the upper part of the driving module, the driving module can vertically flow. and a moving module provided to do so, and the load unit may be moved up and down based on the flow of the moving module.

In addition, the upper rod body may have a metal corrugated tube extrapolated along the height direction.

In addition, the metal corrugated tube may be contracted or relaxed in response to the vertical flow of the upper rod body.

In addition, the load unit may have a cooling passage based on the injection and discharge of the coolant is formed therein.

According to the melting furnace opening and closing device of the vitrification facility of the present invention as described above, there are one or more of the following effects.

According to the present invention, by closing the operation of the vitrification facility or opening and closing the outlet with a water-cooled physical discharge means based on driving (eg, pneumatic, hydraulic, electric method, etc.) to a low-temperature melting furnace in operation, abnormal or aperiodic melt discharge can be prevented. can

In addition, during the high-temperature melt discharge operation, it is possible to secure a flow path for the normal discharge of the melt as a physical discharge means.

In addition, since it is possible to periodically discharge the melt from the low-temperature melting furnace of the vitrification facility (eg, discharge the level of the internal melt from the melting furnace, etc.), long-term and continuous operation of the melting furnace is possible.

In addition, it is possible to secure the safety in operation of the vitrification facility by responding to the melt bridge phenomenon around the outlet of the low-temperature melting furnace during operation of the vitrification facility with physical means.

1 is a view showing a state in which the opening and closing device of the melting furnace of the vitrification facility is installed on the melting furnace.
2 to 4 are views showing the opening and closing device of the melting furnace of the vitrification facility installed in FIG. 1 .
Figure 5 is a view showing the inside of the melting of the vitrification plant according to Figure 1;
Figure 6 is a view showing the inside of the melting of the vitrification plant according to Figure 1;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments published below, but may be implemented in various different forms, and only these embodiments allow the publication of the present invention to be complete, and common knowledge in the technical field to which the present invention pertains. It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe a correlation between an element or components and other elements or components. The spatially relative terms should be understood as terms including different orientations of the device during use or operation in addition to the orientation shown in the drawings. For example, if an element shown in the figures is turned over, an element described as "beneath" or "beneath" another element may be placed "above" the other element. Accordingly, the exemplary term “below” may include both directions below and above. The device may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

Although first, second, etc. are used to describe various elements, components, and/or sections, it should be understood that these elements, components, and/or sections are not limited by these terms. These terms are only used to distinguish one element, component, or sections from another. Accordingly, it goes without saying that the first element, the first element, or the first section mentioned below may be the second element, the second element, or the second section within the spirit of the present invention.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural, unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” refers to the presence of one or more other components, steps, operations and/or elements mentioned. or addition is not excluded.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. A description will be omitted.

1 is a view showing a state in which the opening and closing device of the melting furnace 50 of the vitrification facility is installed on the melting furnace.

Referring to FIG. 1 , the opening/closing device for the melting furnace 50 of the vitrification facility (hereinafter, referred to as “the opening/closing device”) may include a holding unit 110 and a load unit 210 . The rod unit 210 may include an upper rod body 211 and a lower rod body 212 . The mounting unit 110 may include a mounting body 116 , a driving module 111 , an interlocking bar 112 , and a moving module 113 .

2 to 3 are views showing the opening and closing device of the melting furnace 50 of the vitrification facility installed in FIG. 1 .

2 to 3 , the mounting unit 110 may be located on the melting furnace 50 . The load unit 210 may be installed on the mounting unit 110 . Specifically, the load unit 210 is provided to be able to flow up and down on the mounting unit 110 , so that it is possible to open and close the outlet (E) inside the melting furnace 50 in a vertical flow manner.

The upper rod body 211 of the rod unit 210 may be located outside the melting furnace 50 . The lower rod body 212 of the rod unit 210 may be located inside the melting furnace 50 . This, the lower rod body 212 may serve to open and close the melting furnace 50, the internal outlet (E) (see FIGS. 6 and 7).

The upper rod body 211 is expressed as a bar-shaped body exposed to the outside in the drawing, but it is also possible to be implemented as a structure built in the inside of the metal corrugated tube 114 without being exposed to the outside.

The lower rod body 212 may be provided with a bent portion 2121 bent in a diagonal direction. And, the lower rod body 212 may be provided with an extension portion 2122 extending downward from the bent portion 2121 toward the outlet (E).

This extension 2122 may serve to open and close the outlet (E). In carrying out such opening and closing, the rod unit 210 may open and close the discharge port E with the end of the lower rod body 212 .

Figure 5 is a view showing the inside of the melting of the vitrification plant according to Figure 1;

Referring to Figure 5, by contacting the end of the lower rod body 212 to the outlet (E), it is possible to block the outlet (E).

Figure 6 is a view showing the inside of the melting of the vitrification plant according to Figure 1;

6, the rod unit 210 is a melt (M) attached to the outside of the end of the lower rod body 212 (eg, a melt in a solidified state, a melt in a viscous state, etc.) through the outlet ( E) can also be blocked.

Therefore, there is an effect that can prevent abnormal or non-periodic discharge of the melt by opening and closing the discharge port (E) with the rod unit 120, which is a water-cooled physical discharge means, at the end of the operation of the vitrification facility or the low-temperature melting furnace in operation.

In addition, as it is located inside the melting furnace of the rod unit 120 and flows up and down, it is possible to secure a flow path for the normal discharge of the melt during the high-temperature melt discharge operation.

In addition, it is possible to periodically discharge the melt inside the vitrification facility low-temperature melting furnace 50 as needed, such as when the water level of the melt inside the low-temperature melting furnace 50 rises, so that a long-term and continuous operation of the melting furnace is possible.

On the other hand, it is possible to prevent the melt discharge from being suppressed by resolving the melt bridge phenomenon around the upper portion of the outlet inside the low temperature melting furnace 50 during the operation of the vitrification facility.

Mounting unit 110, the mounting body 116 is seated on the upper portion of the low-temperature melting furnace 50, the rod unit 210 is inserted may be provided in a flowable structure. The size of the mounting body 116 may be provided to correspond to that of the rod unit 210 .

On the other hand, the mounting unit 110 is provided with a predetermined mounting structure 51 at the lower portion and may be installed in the melting furnace 50, of course, it can be installed in the melting furnace 50 without such a mounting structure 51. .

The driving module 111 of the mounting body 116 may be provided with a single or plural number of pneumatic, hydraulic, or electric-based cylinder driving means. The moving module 113 of the mounting unit 110 may be connected to the upper rod body 211 .

More specifically, the upper rod body 211 is provided with a fixed structure 115 having a predetermined shape, for example, a plate shape. The moving module 113 may be installed on both sides of the fixed structure 115 .

Therefore, based on the flow of the moving module 113, the fixed structure 115 pulls the upper rod body 211 downward. Here, the upper rod body 211 of the rod unit 210 is hidden by being located inside the metal corrugated tube 114 described above. In accordance with the flow of the upper rod body 211, the lower rod body 212 at the lower part is capable of ascending and descending flow.

On the other hand, the moving module 113 may be provided to be movable up and down from the driving module 111 through the interlocking bar 112 installed on the upper portion of the driving module 111 . Here, the moving module 113 may be coupled to both sides of the upper rod body 211 (eg, bolting, welding, etc.).

That is, the load unit 210 may be vertically flowed by the flow of the upper rod body 211 based on the flow of the moving module 113 . In the upper rod body 211, the metal corrugated pipe 114 may be extrapolated to a predetermined length along the height direction.

Here, the metal corrugated pipe 114 may be contracted or relaxed in response to the vertical flow of the upper rod body 211 . For example, the metal corrugated pipe 114 may be provided between the upper rod body 211 and the mounting unit 110 under the upper rod body 211 .

The metal corrugated pipe 114 is bound to the upper rod body 211 in the upper part, and is bound to the lower rod body 212 in the lower part, so that it is possible to contract and relax in the upper and lower directions.

The load unit 210 may have a cooling passage I based on injection and discharge of cooling water formed therein. A cooling water injection unit for injecting cooling water and a cooling water discharge unit for discharging cooling water may be respectively provided on the upper rod body 211 of the rod unit 210 .

Although the embodiments of the present invention have been described with reference to the above and the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can practice the present invention in other specific forms without changing its technical spirit or essential features. You will understand that there is Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

50: melting furnace
110: mounting unit
111: drive module
112: interlocking bar
113: mobile module
114: metal corrugated tube
210: load unit
211: upper rod body
212: lower rod body
2121: bend
2122: extension
M: solidified melt
E: outlet
I: cooling path

Claims (7)

a holding unit located on the upper part of the melting furnace; and
It is installed on the mounting unit and includes a rod unit for opening and closing the outlet inside the melting furnace through vertical flow,
The load unit is
An upper rod body positioned outside the melting furnace, and a lower rod body positioned inside the melting furnace to open and close the outlet inside the melting furnace. According to claim 1,
The lower rod body is
A bent part bent in the diagonal direction,
A melting furnace opening/closing device of a vitrification facility, which extends downward from the bent portion toward the outlet, and is provided with an extension for opening and closing the outlet. According to claim 1,
The rod unit opens and closes the outlet with the end of the lower rod body,
By bringing the end of the lower rod body into contact with the outlet to block the outlet, the melting furnace opening and closing device of the vitrification facility. According to claim 1,
The rod unit opens and closes the outlet with the end of the lower rod body,
A melting furnace opening and closing device of a vitrification facility that blocks the outlet through a solidified melt attached to the outside of the end of the lower rod body. According to claim 1,
The holding unit is
stand body,
a driving module adjacent to the mounting body;
It is connected to the upper rod body and includes a moving module provided to be movable up and down from the drive module through an interlocking bar installed on the upper part of the drive module,
The load unit moves up and down based on the flow of the moving module, the melting furnace opening and closing device of the vitrification facility. 6. The method of claim 5,
In the upper rod body, a metal corrugated tube is extrapolated and bound along the height direction, and a melting furnace opening and closing device of a vitrification facility. 7. The method of claim 6,
The metal corrugated tube is contracted or relaxed in response to the vertical flow of the upper rod body, the melting furnace opening and closing device of the vitrification facility.

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