阅读说明：本技术 一种vver反应堆控制棒组件贮存装置 (VVER reactor control rod assembly storage device ) 是由 马旭东 杨晓强 李载鹏 刘敦彬 张健夫 徐舒 陶晗笑 刘健 孙暖 于 2020-06-29 设计创作，主要内容包括：本发明属于机械设计技术领域,具体涉及一种VVER反应堆控制棒组件贮存装置。本发明包括不锈钢支撑板、上有机玻璃板、紧固螺栓、下有机玻璃板、导向管；上有机玻璃板位于不锈钢支撑板上表面的正中位置,下有机玻璃板位于不锈钢支撑板的下方,上有机玻璃板、不锈钢支撑板、下有机玻璃板通过紧固螺栓将三者位置固定,导向管顶部固定在上有机玻璃板上,底部固定在下有机玻璃板上。本发明结构简单、轻便、体积小,用于贮存VVER反应堆控制棒组件,不使用时容易存放,不占用新燃料贮存格架,使用时可放置在新燃料贮存格架上,实现VVER反应堆控制棒组件贮存。(The invention belongs to the technical field of mechanical design, and particularly relates to a VVER reactor control rod assembly storage device. The invention comprises a stainless steel supporting plate, an upper organic glass plate, a fastening bolt, a lower organic glass plate and a guide pipe; go up the organic glass board and be located the centre position of stainless steel backup pad upper surface, lower organic glass board is located the below of stainless steel backup pad, goes up organic glass board, stainless steel backup pad, organic glass board down and passes through fastening bolt with the three rigidity, the stand pipe top is fixed on last organic glass board, the bottom is fixed on organic glass board down. The invention has simple structure, portability and small volume, is used for storing the VVER reactor control rod assembly, is easy to store when not in use, does not occupy a new fuel storage grid frame, and can be placed on the new fuel storage grid frame when in use to realize the storage of the VVER reactor control rod assembly.)

1. A VVER reactor control rod assembly storage device, comprising: comprises a stainless steel support plate (4), an upper organic glass plate (3), a fastening bolt (5), a lower organic glass plate (8) and a guide pipe (9); the upper organic glass plate (3) is located in the center of the upper surface of the stainless steel support plate (4), the lower organic glass plate (8) is located below the stainless steel support plate (4), the upper organic glass plate (3), the stainless steel support plate (4) and the lower organic glass plate (8) are fixed in position through the fastening bolts (5), the top of the guide pipe (9) is fixed to the upper organic glass plate (3), and the bottom of the guide pipe is fixed to the lower organic glass plate (8).

2. The VVER reactor control rod assembly storage device of claim 1, wherein: go up organic glass board (3) and go up and have a plurality of circular perforation and 1 constant head tank (10), constant head tank (10) are used for the final location of control rod assembly spider frame bottom.

3. The VVER reactor control rod assembly storage device of claim 2, wherein: of the plurality of circular through holes, the circular through hole positioned at the outer side is used for the stainless steel fastening bolt (5) to pass through, and the circular through hole at the center is used for fixing the top of the guide tube (9) and guiding and passing through the control rod.

4. The VVER reactor control rod assembly storage device of claim 3, wherein: the central circular perforated structure on the upper organic glass plate (3) is divided into 3 layers, the top of the upper organic glass plate is of a chamfer structure, and the upper organic glass plate plays a role in guiding when an absorption rod passes through the upper organic glass plate; the middle part is a round hole with smaller diameter for the absorption rod to pass through; the bottom is a circular groove with a larger diameter and is used for fixing the top of the guide tube (9).

5. The VVER reactor control rod assembly storage device of claim 4, wherein: the diameter of the round perforation at the central part of the stainless steel support plate (4) is slightly smaller than that of the upper organic glass plate (3) and is used for the guide pipe (9) to pass through and support the upper organic glass plate (3); the round through hole on the outer side corresponds to the round through hole on the outer side of the upper organic glass plate (3) in position and is used for the stainless steel fastening bolt (5) to penetrate through.

6. The VVER reactor control rod assembly storage device of claim 5, wherein: the lower organic glass plate (8) is used for fixing the lower part of the guide tube (9), and the position of the circular through hole on the lower organic glass plate (8) corresponds to the position of the circular through hole on the upper organic glass plate (3).

7. The VVER reactor control rod assembly storage device of claim 6, wherein: the central circular perforated structure of the lower organic glass plate (8) is divided into 2 layers, and the top of the lower organic glass plate is provided with a circular groove with a larger diameter for fixing the bottom of the guide pipe (9); the bottom is a round hole with smaller diameter for the absorption rod to pass through.

8. The VVER reactor control rod assembly storage device of claim 7, wherein: the guide tube (9) is used for controlling the control rods of the rod assembly to penetrate through and separating each control rod, and the top of the guide tube (9) is fixed on the upper organic glass plate (3); the bottom of the guide tube (9) is fixed on the lower organic glass plate (8).

9. The VVER reactor control rod assembly storage device of claim 8, wherein: the material hardness of the upper organic glass plate (3), the lower organic glass plate (8) and the guide tube (9) is lower than that of the control rod, so that the control rod is prevented from being damaged.

Technical Field

The invention belongs to the technical field of mechanical design, and particularly relates to a VVER reactor control rod assembly storage device.

Background

The control rod assemblies of a VVER reactor type nuclear power plant are generally inserted into a new fuel assembly or a dedicated storage skeleton for storage before use, and the new fuel assembly or the dedicated storage skeleton is placed in a new fuel storage grid. The fuel assembly, the special storage framework and the new fuel storage framework of the VVER reactor type nuclear power station are all of hexagonal structures.

Except that the power station has enough new fuel assemblies for storing the control rod assemblies when the first furnace is charged, the control rod assemblies need to be replaced in a large batch in the rest time if the service lives of the control rod assemblies in the reactor expire, and if the new fuel assemblies and the frameworks which can be used for storing the control rod assemblies by the power station are insufficient, the phenomenon that part of the control rod assemblies cannot be stored due to insufficient storage positions can occur.

If a large number of new fuel assemblies or dedicated storage frames are purchased at this time, it is expensive and takes up a large amount of inventory.

Disclosure of Invention

The invention aims to provide a storage device for a control rod assembly of a VVER reactor, which has the advantages of simple structure, portability and small volume, is used for storing the control rod assembly of the VVER reactor, is easy to store when not used, does not occupy a new fuel storage grid frame, and can be placed on the new fuel storage grid frame when used, thereby realizing the storage of the control rod assembly of the VVER reactor.

The technical scheme adopted by the invention is as follows:

a VVER reactor control rod assembly storage device comprises a stainless steel support plate, an upper organic glass plate, a fastening bolt, a lower organic glass plate and a guide tube; go up the organic glass board and be located the centre position of stainless steel backup pad upper surface, lower organic glass board is located the below of stainless steel backup pad, goes up organic glass board, stainless steel backup pad, organic glass board down and passes through fastening bolt with the three rigidity, the stand pipe top is fixed on last organic glass board, the bottom is fixed on organic glass board down.

The upper organic glass plate is provided with a plurality of round through holes and 1 positioning groove, and the positioning grooves are used for controlling the final positioning of the bottom of the star frame of the rod assembly.

Of the plurality of circular through holes, the circular through hole positioned at the outer side is used for the stainless steel fastening bolt to pass through, and the circular through hole at the center is used for fixing the top of the guide tube and guiding and passing through the control rod.

The central circular perforated structure on the upper organic glass plate is divided into 3 layers, the top of the upper organic glass plate is of a chamfer structure, and the upper organic glass plate plays a role in guiding when an absorption rod passes through the upper organic glass plate; the middle part is a round hole with smaller diameter for the absorption rod to pass through; the bottom is a circular groove with a larger diameter and is used for fixing the top of the guide tube.

The diameter of the circular through hole at the central part of the stainless steel support plate is slightly smaller than that of the upper organic glass plate, and the circular through hole is used for allowing the guide pipe to pass through and supporting the upper organic glass plate; the round through hole on the outer side corresponds to the round through hole on the outer side of the upper organic glass plate in position and is used for the stainless steel fastening bolt to penetrate through.

The lower organic glass plate is used for fixing the lower part of the guide pipe, and the position of the circular through hole on the lower organic glass plate corresponds to the position of the circular through hole on the upper organic glass plate.

The central circular perforated structure of the lower organic glass plate is divided into 2 layers, and the top of the lower organic glass plate is provided with a circular groove with a larger diameter for fixing the bottom of the guide pipe; the bottom is a round hole with smaller diameter for the absorption rod to pass through.

The guide tube is used for the control rods of the control rod assembly to penetrate through and separate each control rod, and the top of the guide tube is fixed on the upper organic glass plate; the bottom of the guide tube is fixed on the lower organic glass plate.

The material hardness of the upper organic glass plate, the lower organic glass plate and the guide tube is lower than that of the control rod, so that the control rod is prevented from being damaged.

Compared with the prior art, the invention has the beneficial effects that:

(1) the storage device for the control rod assembly of the VVER reactor, which is provided by the invention, has a simple structure, is detachable and is convenient to maintain; for storing a VVER reactor control rod assembly;

(2) the VVER reactor control rod assembly storage device provided by the invention can also be used for storing burnable poison assemblies because the burnable poison assemblies are similar to the control rod assemblies in structure;

(3) the storage device of the control rod assembly of the VVER reactor, which is provided by the invention, is matched with a new fuel storage grid frame for use, and can be placed in the new fuel storage grid frame without a separate storage site and facility;

(4) the storage device for the control rod assembly of the VVER reactor, provided by the invention, comprises the positioning groove and the guide pipe, and can limit the transverse stress and displacement in the storage process of the control rod assembly and the absorption rods, so that the absorption rods of the control rod assembly are mutually isolated and kept in a vertical state;

(5) the storage device for the control rod assembly of the VVER reactor is very light and convenient, can be carried by manpower, and is not limited by hoisting equipment or carrying equipment in movement; the material consumption is less, and the economic efficiency is better.

Drawings

FIG. 1 is a front view of a VVER reactor control rod assembly storage device in accordance with the present invention;

FIG. 2 is a top view of a VVER reactor control rod assembly storage device in accordance with the present invention;

FIG. 3 is a front view of the upper plexiglass plate;

FIG. 4 is a cross-sectional view of the plexiglass plate;

FIG. 5 is a front view of the lower plexiglas plate;

FIG. 6 is a cross-sectional view of the lower plexiglass plate;

in the figure: 1-nut, 2-gasket, 3-go up the organic glass board, 4-stainless steel backup pad, 5-fastening bolt, 6-handle, 7-lath, 8-lower organic glass board, 9-stand pipe, 10-constant head tank.

Detailed Description

The present invention provides a VVER reactor control rod assembly storage device as further described in detail below with reference to the accompanying drawings and the specific embodiments.

As shown in fig. 1 and 2, the storage device for the control rod assembly of the VVER reactor provided by the invention comprises a nut 1, a gasket 2, an upper organic glass plate 3, a stainless steel support plate 4, a fastening bolt 5, a handle 6, a lath 7, a lower organic glass plate 8, a guide tube 9 and a positioning groove 10;

two sides of the upper surface of the stainless steel supporting plate 4 are respectively welded with 1 stainless steel handle 6 for manually moving the storage device; 6 battens 7 are welded at the bottom of the novel fuel storage grid frame and are used for matching with the novel fuel storage grid frame to fix the storage device on the novel fuel storage grid frame; the upper organic glass plate 3 is positioned at the center of the upper surface of the stainless steel support plate 4,

as shown in fig. 3, the upper plexiglass plate 3 has 24 circular perforations and 1 positioning slot 10 for controlling the final positioning of the bottom of the bar assembly spider; the 6 circular through holes at the outer side are used for stainless steel fastening bolts 5 to pass through, and the 18 circular through holes at the center are used for fixing the tops of 18 guide pipes and guiding and passing through 18 absorption rods; as shown in fig. 4, the 18 circular perforated structures are divided into 3 layers, the top of the perforated structures is a chamfer structure, and the perforated structures play a role in guiding when the absorption rods pass through; the middle part is a round hole with smaller diameter for the absorption rod to pass through; the bottom is a circular groove with a larger diameter for fixing the top of the guide tube 9. The hardness of the material of the organic glass plate 3 is lower than that of the control rod, so that the control rod can be prevented from being damaged.

The stainless steel support plate 4 is used for bearing the weight of the control rod assembly and protecting the organic glass plate at the same time, so that the organic glass plate is prevented from being contacted with a new fuel storage grid frame to cause collision and scratch. . The stainless steel support plate 4 is provided with 7 circular through holes, the diameter of the 1 circular through hole at the central part is slightly smaller than that of the upper organic glass plate 3, and the stainless steel support plate is used for 18 guide tubes 9 to pass through and support the upper organic glass plate 3; the 6 circular perforation in the outside correspond with the 6 circular perforation in the last organic glass board 3 outside for stainless steel fastening bolt 5 passes through.

As shown in fig. 5, the lower plexiglas plate 8 is used for the lower fixation of the 18 guide tubes 9. The lower organic glass plate 8 is provided with 24 circular through holes, the positions of the circular through holes correspond to the positions of the 24 circular through holes on the upper organic glass plate 3, and the 6 circular through holes on the outer side are used for the stainless steel fastening bolts 5 to penetrate through; the 18 round through holes close to the center are used for fixing the bottom of 18 guide tubes and passing through 18 absorption rods; as shown in fig. 6, the 18 circular perforated structures are divided into 2 layers, and the top of the perforated structures is a circular groove with a larger diameter for fixing the bottom of the guide tube 9; the bottom is a round hole with smaller diameter for the absorption rod to pass through. The hardness of the lower organic glass plate is lower than that of the control rod, so that the control rod can be prevented from being damaged.

The 18 guide tubes 9 are used for controlling the penetration of the 18 absorber rods of the rod assembly and separating each absorber rod. The top of the guide tube 9 is placed in a circular groove at the bottom of the upper organic glass plate 3, the outer diameter of the guide tube is equivalent to the diameter of the circular groove, the inner diameter of the guide tube is equivalent to the diameter of the circular hole, and the guide tube is fixed on a step formed by the circular groove and the circular hole of the upper organic glass plate 3; the bottom of stand pipe 9 is placed in the circular recess at 8 tops of organic glass board down, and the external diameter is equivalent with the diameter of circular recess, and the internal diameter is equivalent with the round hole diameter, fixes on the step that the circular recess of organic glass board 8 and round hole formed down. The material of stand pipe 9 is organic glass, and the hardness is less than the absorption stick, can avoid haring the absorption stick.

Through using 6 stainless steel fastening bolt 5 to pass 6 round holes in last organic glass board 3, stainless steel backup pad 4, the 8 outsides of organic glass board down to use 12 nuts 1 and 12 2 fixed modes of gasket to fix organic glass board 3, stainless steel backup pad 4, organic glass board 8 down together, form this storage device.

The working principle of the invention is as follows: the device is stably placed on the new fuel storage grid by the handle 6 of the portable storage device. The lath 7 welded at the bottom of the stainless steel supporting plate 4 can be matched with a new fuel storage grid frame so as to fix the device;

moving the control rod assembly to the upper part of the storage device by using a hoisting machine, and aligning the control rod assembly with the storage device by using a positioning groove;

dropping the control rod assembly so that 18 absorber rods pass through the circular perforation of the upper plexiglass plate 3, the guide tube 9, and the circular perforation of the lower plexiglass plate 8 in sequence, while visual inspection of the process is made through the transparent member (plexiglass) of the storage device;

the control rod assembly continues to be dropped until the spider of the control rod assembly is fully seated in the locating groove 10 in the middle of the upper plexiglass plate 3 and the storage of the set of control rod assemblies is complete.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the technical scope of the present invention.