KR-102963817-B1 - DISPOSAL CONTAINER LAYING DEVICE FOR DEEP BOREHOLE DISPOSAL

KR102963817B1KR 102963817 B1KR102963817 B1KR 102963817B1KR-102963817-B1

Abstract

The present invention relates to a disposal container settling device for deep borehole disposal, comprising: a support housing disposed on the upper portion of a connector fixed to the upper portion of the disposal container; a connector holder having a plurality of locking means supported by the support housing and capable of being coupled to the connector; a control rod formed through the support housing and capable of coupling or uncoupling the locking means to the connector through a lifting movement; a lifting rod formed extending vertically upward while penetrating the support housing and supporting the locking means in a state coupled to the connector through a lifting movement to maintain the coupled state of the locking means to the connector; and a lifting force transmission unit connected to the upper portion of the lifting rod and providing a lifting force to the lifting rod.

Inventors

김문오
정덕운
조동건
이창수
박경우
최승범
이종호
명제삼

Assignees

(주) 코네스코퍼레이션

Dates

Publication Date: 20260512
Application Date: 20231226

Claims (11)

A deep borehole disposal container settling device for lifting a connector fixed to the upper part of a disposal container containing high-level waste and settling it together with said disposal container in a borehole, A support housing positioned on the upper side of the connector during lifting, and a connector holder having a plurality of locking means that are rotatably supported on the lower side of the support housing and can enter into the interior of the connector to be coupled with the connector; A control rod formed through the support housing and connecting or disconnecting the locking means to the connector through a lifting movement; A lifting rod that extends vertically upward while penetrating the support housing and supports the locking means in a state coupled to the connector through a lifting movement, thereby maintaining the coupled state of the locking means to the connector; It includes a lifting force transmission unit connected to the upper part of the lifting rod and providing lifting force to the lifting rod, The above control rod is; A hollow rod that extends vertically and has a guide passage at the central axis, and Having an inclined ring provided at the lower end of the above hollow rod and having a radially downward inclined surface, A spring is installed around the hollow rod on the upper part of the support housing, and The above hollow rod is provided with an elastic receiver formed to be elastically biased upward by the spring at the upper part of the support housing, and when the elastic receiver is raised by the spring, the upper part of the locking means arranged to surround the control rod is formed to spread outward by the inclined ring of the rising control rod, and the lower part of the locking means is formed to gather towards the center. A disposal container settling device for deep borehole disposal.
In paragraph 1, The above connector is, It provides a joint space open to the top and has a locking part on the inner surface, The above locking means is, A plurality of hooks rotatably mounted on the lower side of the support housing via a link pin, having a jaw capable of engaging with the locking part, and arranged to surround the control rod, A disposal container settling device for deep borehole disposal.
In paragraph 2, At the upper part of the above hook, a pushing portion is formed that corresponds to the above inclined ring and causes the jaw to be gathered towards the center by being pushed by the above inclined ring when the control rod rises. A disposal container settling device for deep borehole disposal.
In paragraph 3, When the elastic receiver is raised by the spring, the inclined ring is formed to push the pushing part. A disposal container settling device for deep borehole disposal.
In paragraph 4, At the upper part of the above hollow rod, A top plate further provided that receives a force applied from the outside and causes the control rod to compress the spring and descend, A disposal container settling device for deep borehole disposal.
In paragraph 5, The above lifting rod is; A vertical extension bar that is received in the guide passage of the above hollow rod and is capable of being raised and lowered, and A hook spreader provided at the lower end of the vertical extension bar and entering between the hooks to maintain the state in which the jaw is caught on the catch, and A top locking plate formed integrally with the upper end of the vertical extension bar and secured to the lifting force transmission part, A disposal container settling device for deep borehole disposal.
In paragraph 6, The above lifting force transmission unit is; A guide connected to ground lifting equipment, and A weight detachably mounted on the lower part of the above guide and accommodating the upper locking plate, A disposal container settling device for deep borehole disposal.
In Paragraph 7, Inside the above weight, Open to the lower side through the extension bar passage, and having a restraining space formed to accommodate the upper locking plate, A disposal container settling device for deep borehole disposal.
In paragraph 8, The above-mentioned constraint space is, With the above hook spreader in close contact with the bottom surface of the coupling space of the connector, having a height capable of accepting the rise of the vertical extension bar when the control rod is lowered by the weight, A disposal container settling device for deep borehole disposal.
In Paragraph 7, The above guide is; A body having a plurality of mounting grooves on the outer periphery, and A plurality of wings fitted into each mounting groove and protruding from the outer surface of the body, A disposal container settling device for deep borehole disposal.
In Paragraph 10, An elastic support member installed between the body and the wing, which elastically supports the wing in the radial direction of the body, and A separation prevention means comprising preventing the wing from being separated from the mounting groove, A disposal container settling device for deep borehole disposal.

Description

DISSPOSAL CONTAINER LAYING DEVICE FOR DEEP BOREHOLE DISPOSAL The present invention relates to a disposal container settling device for placing a high-level radioactive waste disposal container in a settling area within a deep borehole, and more specifically, to a disposal container settling device for deep borehole disposal that operates solely by mechanical operation by its own weight without using electrical control or power, thereby preventing failures in the harsh deep environment and having good operating efficiency. High-level radioactive waste refers to waste with high radiation intensity generated from spent nuclear fuel or the reprocessing of nuclear fuel. Due to the high intensity of radiation emissions, the transportation and disposal of such high-level waste present significant challenges compared to low-level waste. For example, because spent nuclear fuel contains residual fissile material and continues to emit large amounts of radiation and high temperatures, it is difficult to transport or dispose of immediately; consequently, it is temporarily cooled and stored in underwater storage pools for decades. Excluding reprocessing for recycling, the final disposal methods for spent nuclear fuel include deep disposal, in which sealed containers containing spent fuel are disposed of at depths of several hundred meters underground, and Deep Borehole Disposal (DBD), in which fuel is permanently disposed of in very deep bedrock layers several kilometers underground. Among these, the deep borehole disposal method is a disposal method that does not require a large site area and can be expected to provide long-term structural safety by utilizing the ground of deep crystalline bedrock. However, since the deep borehole disposal method is a process carried out in a deep, confined space, there are difficulties in controlling the settling and retrieval of disposal containers, and research to improve this is ongoing. In this regard, research is also being conducted on the connection and disconnection methods of disposal containers for equipment used for deep borehole disposal, and the jetted J-slot method is known as one such method. The jetted J-slot method releases the connection by pressing and breaking the fixing pin connecting the disposal container and the J-slot using a downward force. In addition to the above joining/unlocking method, a fastening method using a wedge coupling structure is proposed in Patent Document 1 as a fastening method for a disposal container for a deep borehole disposal equipment. The fastening device for a disposal container for a deep disposal borehole disclosed in Patent Document 1 comprises: a first wedge part in which the lower side is coupled to a high-level waste disposal container and a first wedge is formed protrudingly on the upper side; a descender in which a piston movement space is formed on the lower side and a control rod is formed protruding into the piston movement space; and a fastening part in which a piston part is formed on the upper side facing the descender, and a second wedge part is formed by hinge coupling to the lower side to form a piston movement space, and a second wedge part is formed to be coupled to the first wedge. The device is characterized by releasing the fastened second wedge part and the first wedge part through the control rod. FIG. 1 is a perspective view illustrating a disposal container set device according to one embodiment of the present invention together with a connector and a disposal container. FIG. 2 is a front view illustrating a stationary device according to one embodiment of the present invention coupled to a connector. FIG. 3 is a cross-sectional view for explaining the internal configuration of the stationary device illustrated in FIG. 1. Figure 4 is an exploded perspective view of the stationary device of Figure 1. Figure 5 is a separate drawing of the connector holder shown in Figure 4. FIG. 6 is a partially exploded perspective view illustrating a modified example of the guide shown in FIG. 1. FIG. 7 is a cross-sectional view of a stationary device including the guide of FIG. 6. FIGS. 8 and 9 are drawings for explaining the operation of a disposal container settling device according to an embodiment of the present invention. Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In order to explain the present invention simply and clearly in the drawings, parts unrelated to the explanation have been omitted, and the same reference numerals have been used for identical or similar components throughout the specification. Furthermore, embodiments of the present invention are described with a focus on the main components, and descriptions of known devices or similar configurations are omitted. The disposal container settling device (