New Fuel Handlers for Heavy Water Reactors

Abstract

It includes a new fuel handling device for a heavy water reactor. The new fuel handling device for a heavy water reactor includes: a first body unit; a second body unit that moves apart or close to the first body unit in conjunction with the first body unit; a first gripping unit for gripping the first method on the first body unit; and a second gripping unit for gripping the second method on the first body unit.

Description

Technology Field

[0001] The present invention relates to a new fuel handling device for a heavy water reactor. Background Technology

[0002] At heavy water reactor power plants, new fuel transfer is performed by manually moving fuel bundles. During this process, accidents involving the falling of fuel bundles due to human error occur intermittently. Although the procedure is being changed to use lifting tools to move the fuel bundles, fuel-dropping accidents continue to occur due to human error or careless handling of fuel handling equipment. Prior art literature

[0003] Korean Patent Publication No. 10-2015-0090401 The problem to be solved

[0004] The problem that this invention aims to solve is to provide a new fuel bundle handling facility for a heavy water reactor in a nuclear power plant.

[0005] In addition, the invention provides a handling device that prevents falling accidents during the transport of fuel bundles by handling them using a single or combined means.

[0006] For example, the invention provides a handling device capable of stable handling (e.g., securing the grip) when transferring such fuel bundles from a packaging box to a fuel inspection station.

[0007] The problems of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0008] A new fuel handling device for a heavy water reactor according to one aspect of the present invention for achieving the above objective comprises: a first body unit; a second body unit that moves apart or close to the first body unit in conjunction with the first body unit; a first gripping unit for gripping in the first method on the first body unit; and a second gripping unit for gripping in the second method on the first body unit.

[0009] The above-mentioned first gripping unit comprises a guide body positioned on the first body unit, a first contact body that rotates toward the outer surface of the fuel bundle on the guide body, having at least a partially rounded shape, and a second contact body that rotates toward the outer surface of the fuel bundle on the guide body in a direction symmetrical to the first contact body, having at least a partially rounded shape.

[0010] In addition, the first contact body and the second contact body grip the outer surface of the fuel bundle based on the proximity movement.

[0011] The above handling device further includes a linkage body that links the first body unit and the second body unit to enable the close movement and the separated movement.

[0012] In addition, the above-mentioned linkage body includes a left-right connecting body having a protruding pattern formed on its outer surface, with one side entering the interior of the first body unit and the other side entering the interior of the second body unit, and an upper-lower connecting body having one side connected in a gear-like manner to the protruding pattern of the left-right connecting body and the other side connected in a gear-like manner between the first contact body and the second contact body.

[0013] Here, the left and right connecting members are provided to be able to move back and forth on the first body unit or the second body unit by means of a driving means, and the first body unit and the second body unit are moved apart or close to each other based on the back and forth movement of the left and right connecting members.

[0014] In addition, the upper and lower connecting body transmits rotational force to the first contact body and the second contact body in response to the upper and lower movement, and the first contact body and the second contact body rotate based on the rotational force to perform a gripping operation on the fuel bundle.

[0015] These first gripping units are provided spaced apart in multiple numbers along the longitudinal direction on the first body unit.

[0016] In addition, the second type gripping unit comprises a panel-shaped first contact body provided on the first body unit and a panel-shaped second contact body provided on the second body unit, and the first contact body and the second contact body pressurize and fix the fuel bundle between them through the proximity movement.

[0017] Here, the first contactor and the second contactor are respectively inserted, mounted, and fixed at one end and the other end of the fuel bundle.

[0018] In addition, at least one of the first body unit and the second body unit is moved up and down by a lifting means.

[0019] The above fuel bundle is prepared in a sealed state to form a cylindrical shape. Effects of the invention

[0020] According to the present invention as described above, one or more of the following effects are provided.

[0021] First, it can provide a new fuel bundle handling facility for heavy water reactors in nuclear power plants.

[0022] Second, a handling device can be provided that prevents falling accidents during the transfer of fuel bundles by handling them using a single or combined means when handling fuel bundles.

[0023] Third, a handling device capable of stable handling (e.g., securing the fuel) can be provided when moving these fuel bundles from the packaging box to the fuel inspection table. Brief explanation of the drawing

[0024] FIG. 1 is a perspective view illustrating a new fuel handling device for a heavy water reactor according to one embodiment of the present invention. FIG. 2 is a side view illustrating a new fuel handling device of a heavy water reactor according to FIG. 1. Figure 3 is a plan view illustrating a new fuel handling device of a heavy water reactor according to Figure 1. FIG. 4 is a front view illustrating a new fuel handling device of a heavy water reactor according to FIG. 1. FIGS. 5 to 8 are drawings illustrating the configuration for the operation of a new fuel handling device of a heavy water reactor according to FIG. 1. Specific details for implementing the invention

[0025] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. The advantages and features of the present invention, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the attached drawings. However, the present invention is not limited to the embodiments disclosed below but can be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0026] Referring to FIGS. 1 and 2, the new fuel handling device (100) of the heavy water reactor includes a first body unit (110), a second body unit (120), a first gripping unit (130), a second gripping unit, and an interlocking body. The interlocking body includes a left-right connecting body (141) and an up-down connecting body (142).

[0027] Here, the first gripping unit (130) includes a guide body (130), a first contact body (131), and a second contact body (132). The second gripping unit (151, 152) includes a front contact body (151) and a rear contact body (152).

[0028] The first body unit (110) is provided in a predetermined shape. The second body unit (120) is linked to the first body unit (110). The second body unit (120) is moved away from or closer to the first body unit (110).

[0029] In addition, the first gripping unit (130) is intended to perform the first method of gripping on the first body unit (110). The second gripping unit (151, 152) is intended to perform the second method of gripping on the first body unit (110).

[0030] The guide body (130) of the first gripping unit (130) is positioned on the first body unit (110). The first contact body (131) of the first gripping unit (130) is provided in a shape in which at least a portion is rounded.

[0031] Here, the first gripping unit (130) is rotated on the guide body (130) toward the outer surface of the fuel bundle (1). The second contact body (132) of the first gripping unit (130) is provided in a shape in which at least a portion is rounded.

[0032] The second contact member (132) is rotated on the guide body (130) toward the outer surface of the fuel bundle (1) in a direction symmetrical to the first contact member (131). The first contact member (131) and the second contact member (132) grip the outer surface of the fuel bundle (1) based on the proximity movement.

[0033] In addition, the interlocking body of the handling device (100) serves to interlock the first body unit (110) and the second body unit (120) so that the close movement and the distance movement are possible.

[0034] The left and right connecting members (141) of the above linkage body have a protruding pattern (1411) formed on their outer surface. The left and right connecting members (141) are configured so that one side enters the interior of the first body unit (110) and the other side enters the interior of the second body unit (120).

[0035] Meanwhile, one side of the upper and lower connecting member (142) of the above connecting body is connected in a gear-like manner to the protruding pattern (1411) of the left and right connecting member (141). The other side of the above connecting body is connected in a gear-like manner between the first contact member (131) and the second contact member (132).

[0036] The above left and right connecting members (141) are provided to be able to move back and forth on the first body unit (110) or the second body unit (120) by means of a driving means. The first body unit (110) and the second body unit (120) can move apart or close to each other based on the back and forth movement of the left and right connecting members (141).

[0037] The upper and lower connecting body (142) transmits rotational force to the first contact body (131) and the second contact body (132) in response to the upper and lower movement. Based on the rotational force, the first contact body (131) and the second contact body (132) are each rotated to perform a gripping operation on the fuel bundle (1).

[0038] In addition, the first gripping unit (130) is provided spaced apart in multiple places along the longitudinal direction on the first body unit (110). The front contact member (151) of the second gripping unit is provided on the first body unit (110).

[0039] The rear contact member (152) of the second type gripping unit is provided in the form of a panel on the second body unit (120). The front contact member (151) and the rear contact member (152) pressurize and fix the fuel bundle (1) between them through the close movement.

[0040] In addition, the front contact member (151) and the rear contact member (152) can be inserted and mounted to one end and the other end of the fuel bundle (1), respectively, and fixed. At least one of the first body unit (110) and the second body unit (120) is moved up and down by a lifting means. The fuel bundle (1) is prepared in a sealed state so as to form a cylindrical shape.

[0041] Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention may be implemented in other specific forms without changing its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. Explanation of the symbols

[0042] 1: Fuel bundle 100: Handling device 110: 1st Body Unit 120: Second body unit 130: Graft unit 141: Left and right connector 142: Upper and lower connector

Claims

Claim 1 A new fuel handling device for a heavy water reactor, comprising: a first body unit; a second body unit that moves apart or close together in conjunction with the first body unit; a first gripping unit for a first gripping method on the first body unit; and a second gripping unit for a second gripping method on the first body unit, wherein the first gripping unit comprises a guide body positioned on the first body unit, a first contact body that rotates toward the outer surface of a fuel bundle on the guide body having at least a partially rounded shape, and a second contact body that rotates toward the outer surface of a fuel bundle on the guide body in a direction symmetrical to the first contact body having at least a partially rounded shape. Claim 2 delete Claim 3 A new fuel handling device for a heavy water reactor according to claim 1, wherein the first contact body and the second contact body grip the outer surface of the fuel bundle based on the proximity movement. Claim 4 A new fuel handling device for a heavy water reactor according to claim 3, wherein the handling device further comprises a linkage body that links the first body unit and the second body unit to enable the close movement and the separated movement. Claim 5 In claim 4, the interlocking body comprises a left-right connecting body having a protruding pattern formed on its outer surface, with one side entering the interior of the first body unit and the other side entering the interior of the second body unit, and an upper-lower connecting body having one side connected in a gear-like manner to the protruding pattern of the left-right connecting body and the other side connected in a gear-like manner between the first contact body and the second contact body, thereby forming a new fuel handling device for a heavy water reactor. Claim 6 A new fuel handling device for a heavy water reactor according to claim 5, wherein the left and right connecting members are configured to be able to move back and forth on the first body unit or the second body unit by means of a driving means, and the first body unit and the second body unit are moved apart or close to each other based on the back and forth movement of the left and right connecting members. Claim 7 A new fuel handling device for a heavy water reactor according to claim 6, wherein the upper and lower connecting members transmit rotational force to the first contact member and the second contact member in response to the upper and lower movement, and the first contact member and the second contact member rotate based on the rotational force to perform a gripping operation on the fuel bundle. Claim 8 In claim 7, the first type gripping unit is provided spaced apart in multiple numbers along the longitudinal direction on the first body unit, a new fuel handling device for a heavy water reactor. Claim 9 In claim 6, the second type gripping unit comprises a panel-shaped first contact body provided on the first body unit and a panel-shaped second contact body provided on the second body unit, and the first contact body and the second contact body pressurize and fix the fuel bundle between them through the close movement, a new fuel handling device for a heavy water reactor. Claim 10 A new fuel handling device for a heavy water reactor according to claim 1, wherein the first contact body and the second contact body are each inserted, mounted, and fixed at one end and the other end of the fuel bundle, respectively. Claim 11 A new fuel handling device for a heavy water reactor according to claim 1, wherein at least one of the first body unit and the second body unit is moved up and down by a lifting means. Claim 12 A new fuel handling device for a heavy water reactor according to claim 1, wherein the fuel bundle is prepared in a sealed state to form a cylindrical shape.

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