KR20220128758A - Radioactive material reduction device - Google Patents

Abstract

A radioactive material reduction device is provided. The radioactive material reduction device comprises: a fixed unit capable of moving or fixing a location; and a spray unit installed on the fixed unit and configured to spray a fluid for fire suppression to a fire generating unit. The spray unit comprises: a body of which a length is variable in a forward and backward manner between a front and a rear; and a spray object configured to spray the fluid on one side of the body.

Description

Radioactive material reduction device

The present invention relates to a radioactive material reduction device.

A nuclear power plant should establish a fire protection plan considering decommissioning even after permanent shutdown. Fire prevention and fire suppression are important in the fire protection plan of a decommissioned nuclear power plant. In addition, a fire protection program should be established to minimize the release of radioactive materials even in the event of a fire.

A decommissioned nuclear power plant is to dismantle the existing equipment and eventually restore the site to its original state, and it is accompanied by frequent changes in the structure of the protected area and the demolition of system facilities depending on the decommissioning process. In this case, a mobile fire extinguishing system is more efficient than a fixed fire extinguishing system. In particular, it is necessary to reduce the emission of radioactive material in case of fire because there is a possibility of radioactive material release through incomplete sealing area due to temporary firewall installation.

Korean Patent Registration No. 10-1704700

The problem to be solved by the present invention is to provide a radioactive material reduction device capable of minimizing the emission of radioactive material even if the fire suppression fails among the requirements of the fire protection plan of a decommissioned nuclear power plant.

In addition, it is to provide a radioactive material reduction device that is easier to access to the fire area than the existing manual fire suppression equipment by manpower.

In addition, it is to provide a radioactive material reduction device that can increase the availability and efficiency in operation of the device by replacing the personnel mobilized for fixing the fire hose provided in the radioactive material reduction device.

In addition, it is to provide a radioactive material reduction device capable of minimizing the risk of exposure by minimizing exposure to radioactive materials by enabling effective access to high-rise buildings outside the building in operating the radioactive material reduction device.

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 radioactive material reduction device according to an aspect of the present invention for achieving the above object includes a fixed unit capable of moving or fixing a position; and a spray unit installed on the fixed unit and configured to spray a fluid for fire suppression to the fire generating unit, wherein the spray unit includes a body whose length is variable in a forward and backward manner between a front and a rear, and one side of the body It may include a jetting body for jetting the fluid.

In addition, the injection unit is connected to the supply source of the fluid and the connector on the other side, and receives the fluid from the supply source, and the connector is fixed such that at least a part passes through the fixing unit, the connection by the fluid supply It can prevent body movement.

In addition, the jetting body may be operated in a jetting mode for jetting the fluid, a blocking mode for blocking jetting of the fluid, and a direct water jetting mode for jetting the fluid but directly jetting water.

In addition, the body includes a base body at the rear and a movable body provided in front of the base body, a first rotating body is provided on the base body, and the first rotation body is provided on the movable body via a connecting member A second rotating body interlocked with the whole is provided, the injection body is provided with a third rotating body meshed with the second rotating body in a gear fastening manner, and the third rotating body is provided from the first rotating body. Based on the rotational force applied to the second rotating body, the rotational flow of the jetting body in the circumferential direction, the jetting body may spray or block the fluid based on the rotational flow.

In addition, the body is provided between the base body and the movable body, and includes an intermediate body for moving the movable body forward and backward from the base body, and at least the movable body can be folded from the base body. .

In addition, the fixed unit, the base portion, is provided on both left and right sides on the upper portion of the base portion, and includes a holder for mounting the injection unit therebetween, the injection unit is located between the mounting portions, At least one of the left and right sides of the mounting unit may be shaft-coupled to the mounting unit through a fixing body passing through the mounting unit.

In addition, the injection unit is provided so as to be tiltable at a set angle on the mounting portion, the fixed body, a mounting portion that is rotatably mounted to the injection unit in a forward or reverse rotation manner, and a wing on the outside of the mounting portion It is provided to have a part, and based on the rotational mounting of the fixture, the wing part may include a press-fitting part to press and fix the mounting part to the injection unit side.

In addition, each of the holding portions is provided with a first supporting bar and a second supporting bar spaced apart from the first supporting bar to form a spaced space, and the first supporting bar and the second supporting bar are spaced apart from each other in the lower area to fix them. A screw member for fastening or untightening each other in the front-rear direction in the upper region may be provided.

In addition, the mounting portion of the fixture may be installed to pass through the separation space, and the press-fitting portion of the fixture may press the first support bar and the second support bar toward the injection unit.

In addition, the fixture is positioned between the fixture member and the screw member, and the fixture is fixed between the first support bar and the second support bar based on the tightening, and the fixture is the first support bar. By being fixed between the bar and the second support bar, it is possible to suppress the fluctuation of the injection unit.

In addition, the injection unit is provided on one side of the body, and further comprises a radiation sensor for detecting the location of the release of the radioactive material, the radiation sensor is based on the radiation level to output the radiation intensity as signal information. can

In addition, the signal information may be output as a continuous beep that is relatively accelerated according to the intensity of the radioactive material.

In addition, the fixed unit is provided with a movable wheel for moving the position and a plurality of mounting bodies for fixing the position at the lower part, and the mounting body passes through the lower part from the upper part of the fixed unit in a forward rotation or reverse rotation manner. It can be fixed on the base.

In addition, the fixing unit may be provided with a frame-shaped handle for gripping the upper portion of the fixing unit.

According to the radioactive material reduction device of the present invention as described above, there is one or more of the following effects.

According to the present invention, it is possible to provide a radioactive material reduction device capable of minimizing the emission of radioactive material even if fire suppression fails among the requirements of a fire protection plan of a decommissioned nuclear power plant.

In addition, it is possible to provide a radioactive material reduction device with easier access to the fire area than the existing manual fire suppression equipment by manpower.

In addition, it is possible to provide a radioactive material reduction device that can increase the availability and efficiency in operation of the device by replacing the personnel mobilized for fixing the fire hose provided in the radioactive material reduction device.

In addition, it is possible to provide a radioactive material reduction device capable of minimizing the risk of exposure by minimizing exposure to radioactive materials by enabling effective access to high-rise buildings outside the building in operating the radioactive material reduction device.

1 is a diagram schematically showing a radioactive material reduction device according to an embodiment of the present invention.
2 to 3 are partially enlarged views of some components according to FIG. 1 .
FIG. 4 is a view showing a flow state of the radioactive material reduction device according to FIG. 1 .
FIG. 5 is a diagram schematically showing some of the configurations of the radioactive material reduction device according to FIG. 1 .
6 to 8 are views schematically showing some modified examples of the configurations of the radioactive material reduction device according to FIG. 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.

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 diagram schematically showing a radioactive material reduction device according to an embodiment of the present invention.

Referring to FIG. 1 , the apparatus 100 for reducing radioactive materials according to an embodiment of the present invention may include a fixing unit 110 and a spraying unit 120 . The fixing unit 110 may include a base portion 111 , a mounting portion 112 , and a fixing body 113 .

The injection unit 120 may include a body 121 , an injection body 122 , a radiation sensor 123 , and a signal output body 128 . Here, the body 121 may include a base body 1211 , a movable body 1212 , and an intermediate body 1213 .

The fixture 113 may include a mounting part 1131 and a press-fitting part 1132 . Here, the fixing unit 110 may be moved to a set position, or may be provided to be fixed on a set position.

The spray unit 120 may be installed on the fixed unit 110 . The injection unit 120 may inject a fluid (such as fire extinguishing agent extinguishing water, radioactive washing water, etc.) for suppression of a fire to the fire generating unit.

FIG. 4 is a view showing a flow state of the radioactive material reduction device according to FIG. 1 .

Referring to FIG. 4 , the body 121 of the injection unit 120 may have a variable length while moving forward and backward between the front and the rear. The jetting body 122 of the jetting unit 120 may serve to jet the fluid from one side of the body 121 .

The injection unit 120 may be connected to the fluid supply source (S) and the connection body (50) on the other side. The injection unit 120 may receive the fluid from the source (S).

The connecting body 50 may be fixed such that at least a part passes through the fixing unit 110 . The connecting body 50 may be oscillated in all directions by the supply hydraulic pressure of the fluid. In order to prevent the shaking, the connecting body 50 is fixed to the fixing unit 110 .

Here, the connecting body 50 may be provided so as to pass through the handle portion H of the fixing unit 110 to be described later. Through this, it is possible to further strengthen the prevention of shaking of the connecting body 50 .

FIG. 5 is a diagram schematically showing some of the configurations of the radioactive material reduction device according to FIG. 1 .

Referring to FIG. 5 , the jetting body 122 may be operated in, for example, a jetting mode, a blocking mode, and a direct jetting mode. In the injection mode, the fluid is injected, and in the blocking mode, the injection of the fluid is blocked. In the direct water injection mode, the fluid may be sprayed, but limited to direct water.

Meanwhile, the base body 1211 of the body 121 may be located at the rear. The movable body 1212 of the body 121 may be provided in front of the base body 1211 .

Here, on the base body 1211, a first rotating body 124 that rotates forward or reversely may be provided. A second rotating body 126 interlocking with the first rotating body 124 through a connecting member (eg, a chain member, etc.) 125 may be provided on the moving body 1212 .

On the other hand, the first rotating body 124 may be provided with a gripping body (G) so that the circumferential rotation of the first rotating body 124 can be performed more quickly and stably.

The jetting body 122 may be provided with a third rotating body 127 in the shape of a toothed wheel that is engaged with the second rotating body 126 in a gear fastening method. Here, the meshing may include a known technique or a method based thereon as rotation by engagement between serrated structures.

Here, the third rotating body 127 may rotate the jetting body 122 in a circumferential direction based on the rotational force applied from the first rotating body 124 to the second rotating body 126 . .

The jetting body 122 may jet or block the fluid based on the rotational flow. The body 121 may be provided between the base body 1211 and the movable body 1212 .

1 and 4 , the intermediate body 1213 is for moving the movable body 1212 forward and backward from the base body 1211 . At least the movable body 1212 of the body 121 may move forward and backward from the base body 1211 in a retractable manner.

When the fluid is supplied into the base body 1211 , the intermediate body 1213 is advanced forward in the base body 1211 based on the fluid supply to the base body 1211 .

When the fluid is supplied to the inside of the intermediate body 1213 , the movable body 1212 is advanced forward inside the intermediate body 1213 based on the fluid supply to the intermediate body 1213 .

Through this, it is possible to operate the radioactive material reduction device to more quickly and stably reach an area that is difficult to access.

In addition, the base body 1211 may be provided with a first front end bent portion (M11) bent toward the inside at the front end. The intermediate body 1213 may be provided with a first rear-end bent portion M21 bent toward the outside at the rear end portion.

As the intermediate body 1213 flows forward and backward from the base body 1211, the first rear-end bent portion M21 is engaged with the first front-end bent portion M11 to limit the richness of the forward and backward flow, can be made to be fixed.

Referring to FIG. 3 , a first packing member P1 is provided between the first front-end bent part M11 and the first rear-end bent part M21 to prevent leakage of fluid.

In addition, a second front-end bending part M12 bent toward the inside may be provided at the front end of the intermediate body 1213 . The movable body 1212 may be provided with a second rear-end bent portion M22 bent toward the outside at the rear end portion.

In the moving body 1212 moving forward and backward from the intermediate body 1213, the second rear-end bent portion M22 is engaged with the second front-end bent portion M12 to limit the richness of the forward and backward flow. can be made to be fixed.

Referring to FIG. 4 , a second packing member P2 is provided between the second front-end bent part M12 and the second rear-end bent part M22 to prevent leakage of fluid.

The base portion 111 of the fixing unit 110 may be formed of a structure having a predetermined shape constituting the base. The mounting portion 112 of the fixing unit 110 may be provided on both left and right sides of the upper portion of the base portion 111 .

The mounting portion 112 may be provided as a pair, for example, to be mounted with the injection unit 120 interposed therebetween. That is, the injection unit 120 may be positioned between the mounting parts 112 .

On the other hand, the fixing body 113 is a structure that is installed so as to pass through the holding unit 112 to at least one of the left and right sides of the base holder (112). The injection unit 120 may be shaft-coupled on the mounting part 112 through the fixing body 113 .

The injection unit 120 may be provided to be tiltable at a set angle on the mounting unit 112 . The mounting part 1131 of the fixed body 113 may be rotatably mounted to the injection unit 120 in a forward rotation or reverse rotation manner.

The press-fitting part 1132 of the fixing body 113 may be provided in the form of a wing on the outside of the mounting part 1131 . The press-fitting part 1132 may press and fix the mounting part 112 toward the injection unit 120 side based on the rotational mounting of the fixing body 113 .

Meanwhile, each of the holding units 112 may include a first supporting bar 1121 and a second supporting bar 1122 spaced apart from the first supporting bar 1121 to form a spaced space. The first support bar 1121 and the second support bar 1122 may be provided with a fixing member 114 for fixing the spaced apart from each other in the lower region.

In addition, the first support bar 1121 and the second support bar 1122 may be provided with a fastening member 115 for tightening or untightening each other in the front-rear direction in the upper region.

The fixture 113 may be positioned between the fixture member 114 and the tightening member 115 . The fixing body 113 may be fixed between the first supporting bar 1121 and the second supporting bar 1122 based on the tightening.

Here, the fixing body 113 is fixed between the first support bar 1121 and the second support bar 1122 , thereby suppressing the fluctuation of the spray unit 120 . Therefore, it is possible to easily handle the radioactive material reduction device 100 even without a large number of personnel.

The radiation sensing body 123 of the injection unit 120 may be provided on one side of the body 121 . The radiation sensor 123 may detect a location where the radioactive material is emitted.

The beep output unit 128 of the injection unit 120 may output the radiation intensity as signal information based on the radiation level with respect to the detected radioactive material.

The beep output unit 128 may output the signal information as a continuous beep that is relatively accelerated according to the intensity of the radioactive material. Accordingly, it is possible to visually and intuitively determine the intensity of the radioactive material.

On the other hand, the fixed unit 110 may be provided with a movable wheel (R1, R2, R3, R4) for the position movement at the lower portion, and a plurality of mounting bodies (L1, L2, L3, L4) for the position fixing. have.

The mounting bodies L1 , L2 , L3 , and L4 may be fixed on the base by passing through the upper to the lower portion of the fixing unit 110 in a forward or reverse rotation manner.

In addition, the fixing unit 110 may be provided with a frame-shaped handle portion (H) on the fixing unit (110). It is possible to enable various interlocking such as gripping, hooking, and insertion of an operator or equipment through the handle portion.

6 to 8 are views schematically showing some modified examples of the configurations of the radioactive material reduction device according to FIG. 1 .

6 to 8 , the jetting body 122 may include a first rotating plate 1221 . The first rotating plate 1221 can rotate in the circumferential direction. The first rotating plate 1221 is provided with a plurality of injection area parts (L11) and a plurality of through-hole area parts (L12).

The spray body 122 may have a shape bent in a bow shape. Through such a shape, a portion for a radius and an angle at which the fluid is sprayed may be adjusted.

The spray body 122 may be provided with a second rotating plate 1222 . The first rotation plate 1221 is relatively rotatable on the second rotation plate 1222 corresponding to the first rotation plate 1221 .

That is, the first rotation plate 1221 may be rotated based on the second rotation plate 1222 . The second rotating plate 1222 includes a base through-hole area portion L22 corresponding to the through-hole area portion L12 and a blocking area portion L21 corresponding to the injection area portion L11.

When the injection area part L11 of the first rotary plate 1221 is positioned to correspond to the base aperture area part L22 of the second rotary plate 1222, the fluid flows into the base aperture area part L22 and the It may be sprayed through the spray area part L11.

In addition, when the through-hole area part L12 of the first rotary plate 1221 is positioned to correspond to the base through-hole area part L22 of the second rotary plate 1222, the fluid flows through the base through-hole area part L22 and It may be sprayed through the through-hole area part L12.

When the injection area portion L11 and the through-hole area portion L12 of the first rotation plate are positioned to correspond to the blocked area portion L21 of the second rotation plate 1222, the injection of the fluid may be restricted. .

Meanwhile, a mounting protrusion T may be provided on the rear surface of the first rotating plate 1221 . A mounting hole LH to which the mounting protrusion T is mounted may be formed in the second rotating plate 1222 .

The first rotating plate 1221 may be capable of relative rotation of the first rotating plate 1221 by mounting the mounting protrusion T to the mounting hole LH of the second rotating plate 1222 .

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: connection body 110: fixed unit
111: base portion 112: mounting portion
113: fixed body 1131: mounting portion
1132: pressure unit 120: injection unit
121: body 1211: base body
1212: movable body 1213: intermediate body
122: jetting body

Claims (10)

a fixed unit capable of moving or fixing a position; and
It is installed on the fixed unit and includes a spray unit for spraying a fluid for extinguishing a fire to a fire generating unit,
The spray unit is
A body whose length is variable in a forward and backward manner between the front and the rear,
A radioactive material reduction device comprising an injector for ejecting the fluid from one side of the body. According to claim 1,
The injection unit is connected to the supply source of the fluid and the connector on the other side, and receives the fluid from the supply source,
The connection body is fixed so that at least a part passes through the fixing unit, so as to prevent fluctuation of the connection body by the supply hydraulic pressure of the fluid, a radioactive material reduction device. 3. The method of claim 2,
The spray is
an injection mode for spraying the fluid;
a blocking mode for blocking the injection of the fluid;
A radioactive material reduction device that sprays the fluid, but operates in a direct water injection mode of direct injection. 3. The method of claim 2,
The body is
It includes a base body at the rear, and a movable body provided in front of the base body,
A first rotating body is provided on the base body, and a second rotating body interlocking with the first rotating body via a chain member is provided on the movable body,
The jetting body is provided with a third rotating body in the shape of a gear that is engaged with the second rotating body in a gear fastening method,
The third rotating body,
Based on the rotational force applied from the first rotating body to the second rotating body, the injection body is rotated in the circumferential direction,
The injection body sprays or blocks the fluid based on the rotational flow, a radioactive material reduction device. 5. The method of claim 4,
The body is
It is provided between the base body and the movable body, and includes an intermediate body for moving the movable body forward and backward from the base body,
At least the mobile body moves forward and backward from the base body in a retractable manner, a radioactive material reduction device. 3. The method of claim 2,
The fixed unit is
base and
It is provided on both left and right sides on the upper part of the base part, and includes a cradle for mounting the spray unit therebetween,
The spray unit is
The radioactive material reduction device, which is located between the mounting parts, and is shaft-coupled to the mounting part through a fixture passing through the mounting part to at least one of the left and right sides of the mounting part. 7. The method of claim 6,
The injection unit is provided to be tiltable at a set angle on the mounting part,
The fixture is
a mounting part which is rotationally mounted to the injection unit in a forward rotation or reverse rotation method;
Provided in the form of a wing on the outside of the mounting portion, based on the rotational mounting of the fixture, comprising a press-fitting portion for pressurizing and fixing the mounting portion to the injection unit side, a radioactive material reduction device. 7. The method of claim 6,
Each of the holding portions is provided with a first supporting bar and a second supporting bar spaced apart from the first supporting bar to form a spaced apart space,
The first support bar and the second support bar,
A fixture member for fixing the spaced apart from each other in the lower region;
A radioactive material reduction device provided with a tightening member for tightening or untightening each other in the front and rear directions in the upper region. 9. The method of claim 8,
The mounting portion of the fixture is installed to pass through the separation space, and the press-fitting portion of the fixture presses the first support bar and the second support bar toward the injection unit. 10. The method of claim 9,
The fixture is
Positioned between the fixture member and the tightening member, and fixed between the first support bar and the second support bar based on the tightening, to suppress the fluctuation of the injection unit, a radioactive material reduction device.

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