CN212967144U - PWR reactor control rod assembly storage device - Google Patents
PWR reactor control rod assembly storage device Download PDFInfo
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- CN212967144U CN212967144U CN202021233201.3U CN202021233201U CN212967144U CN 212967144 U CN212967144 U CN 212967144U CN 202021233201 U CN202021233201 U CN 202021233201U CN 212967144 U CN212967144 U CN 212967144U
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- organic glass
- glass plate
- control rod
- stainless steel
- storage device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model belongs to the technical field of mechanical design, concretely relates to PWR reactor control rod subassembly storage device. The utility model comprises a stainless steel supporting plate, an upper organic glass plate, a fastening bolt, a guide pipe and a lower organic glass plate; 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 utility model discloses simple structure, light, small for store PWR reactor control stick subassembly, deposit easily when not using, do not occupy new fuel storage framework, can place on new fuel storage framework during the use, realize PWR reactor control stick subassembly and store.
Description
Technical Field
The utility model belongs to the technical field of mechanical design, concretely relates to PWR reactor control rod subassembly storage device.
Background
The control rod assemblies of PWR nuclear power plants are typically inserted into new fuel assemblies for storage prior to use, and the new fuel assemblies are placed in new fuel storage racks. The fuel assembly and the new fuel grillwork of the PWR reactor type nuclear power station are of quadrilateral structures.
Except for the fact that the power station has enough new fuel assemblies for storing the control rod assemblies when the furnace is charged firstly, the control rod assemblies need to be replaced in large batch in the rest time if the service life of the control rod assemblies in the reactor expires, and if the new fuel assemblies which can be used for storing the control rod assemblies by the power station are insufficient, part of the control rod assemblies cannot be stored due to insufficient storage positions.
If a large number of new fuel assemblies are purchased at this time, it is expensive and takes up a large amount of inventory.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a PWR reactor control rod subassembly storage device, simple structure, light, small for store PWR reactor control rod subassembly, deposit easily when not using, do not occupy new fuel and store the grillwork, can place on new fuel stores the grillwork during the use, realize that PWR reactor control rod subassembly stores.
The utility model adopts the technical proposal that:
a PWR reactor control rod assembly storage device comprises a stainless steel support plate, an upper organic glass plate, a fastening bolt, a guide tube and a lower organic glass plate; 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 storage device further comprises a handle fixedly arranged on the stainless steel supporting plate and used for manually moving the storage device.
And a plurality of battens are welded at the bottom of the stainless steel supporting plate and are used for matching with the new fuel storage grillwork to fix the storage device on the new fuel storage grillwork.
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 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 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 beneficial effects of the utility model reside in that:
(1) the utility model provides a PWR reactor control rod assembly storage device, which has simple structure, can be disassembled, is convenient to maintain and is used for storing PWR reactor control rod assemblies;
(2) the utility model provides a PWR reactor control rod subassembly storage device, because the structure of neutron source subassembly, choked flow stopper subassembly is similar with the control rod subassembly, also can be used to the storage of neutron source subassembly, choked flow stopper subassembly;
(3) the PWR reactor control rod assembly storage device provided by the utility model is matched with a new fuel storage grid frame for use, and can be placed in the new fuel storage grid frame without separate storage sites and facilities;
(4) the utility model provides a PWR reactor control rod assembly storage device, a positioning groove and a guide tube can limit the transverse stress and displacement of the control rod assembly and the control rod in the storage process, and ensure that the control rods of the control rod assembly are mutually isolated and keep a vertical state;
(5) the utility model provides a PWR reactor control rod assembly storage device, very light, the manual work can carry, the removal is not restricted by hoisting equipment or handling equipment; the material consumption is less, and the economic efficiency is better.
Drawings
FIG. 1 is a front view of a PWR reactor control rod assembly storage apparatus provided by the present invention;
FIG. 2 is a top plan view of a PWR reactor control rod assembly storage device provided by the present invention;
FIG. 3 is a front view of the upper plexiglass plate;
FIG. 4 is a cross-sectional view of the upper 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-handle, 2-stainless steel backup pad, 3-lath, 4-go up organic glass board, 5-nut, 6-gasket, 7-fastening bolt, 8-stand pipe, 9-lower organic glass board, 10-constant head tank.
Detailed Description
The present invention provides a PWR reactor control rod assembly storage device, which will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the present invention provides a PWR reactor control rod assembly storage device, which comprises a handle 1, a stainless steel support plate 2, a lath 3, an upper organic glass plate 4, a nut 5, a gasket 6, a fastening bolt 7, a guide tube 8, a lower organic glass plate 9, and a positioning groove 10;
two sides of the upper surface of the stainless steel supporting plate 2 are respectively welded with 1 stainless steel handle 1 for manually moving the storage device; the bottom of the novel fuel storage grid is welded with 4 battens 3 which are used for matching with the novel fuel storage grid to fix the storage device on the novel fuel storage grid; the upper organic glass plate 4 is positioned at the center of the upper surface of the stainless steel support plate 2, as shown in fig. 3, 28 circular through holes and 1 positioning groove 10 are formed in the upper organic glass plate 4, and the positioning groove 10 is used for controlling the final positioning of the bottom of the bar component star frame; the outer 4 circular through holes are used for stainless steel fastening bolts 7 to pass through, and the central 24 circular through holes are used for top fixing of 24 guide tubes 8 and guiding and passing of 24 control rods; as shown in fig. 4, the 24 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 control rods pass through; the middle part is a round hole with smaller diameter for the control rod to pass through; the bottom is a circular groove with a larger diameter for fixing the top of the guide tube 8. The hardness of the material of the organic glass plate 4 is lower than that of the control rod, so that the control rod can be prevented from being damaged.
The stainless steel support plate 2 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 supporting plate 2 is provided with 5 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 4, and the 24 guide tubes 8 are used for passing through and supporting the upper organic glass plate 4; the 4 circular perforation in the outside correspond with 4 circular perforation positions in the last organic glass board 4 outsides for stainless steel fastening bolt 7 passes through.
As shown in fig. 5, the lower plexiglas plate 9 is used for the lower fixation of the 24 guide tubes 8. The lower organic glass plate 9 is provided with 28 circular through holes, the positions of the circular through holes correspond to the positions of the 28 circular through holes on the upper organic glass plate 4, and the 4 circular through holes on the outer side are used for the stainless steel fastening bolts 7 to pass through; the center 24 circular through holes are used for fixing the bottoms of the 24 guide tubes and allowing 24 control rods to penetrate through the guide tubes;
as shown in fig. 6, the 24 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 8; the bottom is a round hole with smaller diameter for the control rod to pass through. The hardness of the lower organic glass plate 9 is lower than that of the control rod, so that the control rod can be prevented from being damaged.
The 24 guide tubes 8 are used for the passage of the 24 control rods of the control rod assembly and separate each control rod. The top of the guide tube 8 is placed in a circular groove at the bottom of the upper organic glass plate 4, 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 4; the bottom of the guide tube 8 is placed in a circular groove at the top of the lower organic glass plate 9, 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 lower organic glass plate 9. The material of the guide tube 8 is organic glass, the hardness is lower than that of the control rod, and the control rod can be prevented from being damaged.
Through 4 round holes that use 4 stainless steel fastening bolt 7 to pass last organic glass board 4, stainless steel backup pad 2, the organic glass board 9 outside down to use 8 nuts 5 and 8 fixed modes of gasket 6 to fix organic glass board 4, stainless steel backup pad 2, organic glass board 9 down together, form this storage device.
The utility model discloses a theory of operation does:
the device is stably placed on the new fuel storage rack by the handle 1 of the portable storage device. The laths 3 welded at the bottom of the stainless steel supporting plate 2 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 24 control rods pass through the circular perforation of the upper plexiglass plate 4, the guide tube 8, and the circular perforation of the lower plexiglass plate 9 in sequence, while visually inspecting this process 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 4 and the storage of the set of control rod assemblies is complete.
The above description is only the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept thereof equally within the technical scope disclosed in the present invention, and all the modifications should be covered within the protection scope of the present invention.
Claims (7)
1. A PWR reactor control rod assembly storage device, characterized by: comprises a stainless steel support plate (2), an upper organic glass plate (4), a fastening bolt (7), a guide pipe (8) and a lower organic glass plate (9); the upper organic glass plate (4) is located in the center of the upper surface of the stainless steel support plate (2), the lower organic glass plate (9) is located below the stainless steel support plate (2), the upper organic glass plate (4), the stainless steel support plate (2) and the lower organic glass plate (9) are fixed in position through fastening bolts (7), the top of the guide pipe (8) is fixed on the upper organic glass plate (4), and the bottom of the guide pipe is fixed on the lower organic glass plate (9);
the storage device is characterized by also comprising a handle (1), wherein the handle (1) is fixedly arranged on the stainless steel supporting plate (2) and is used for manually moving the storage device;
and a plurality of battens (3) are welded at the bottom of the stainless steel support plate (2) and are used for being matched with a new fuel storage grid frame to fix the storage device on the new fuel storage grid frame.
2. A PWR reactor control rod assembly storage device as defined in claim 1, wherein: the upper organic glass plate (4) is provided with a plurality of round through holes and 1 positioning groove (10), and the positioning groove (10) is used for final positioning of the bottom of the control rod assembly star frame.
3. A PWR reactor control rod assembly storage device as defined in 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 (7) to pass through, and the circular through hole at the center is used for fixing the top of the guide pipe (8) and guiding and passing through the control rod.
4. A PWR reactor control rod assembly storage device as defined in claim 3, wherein: the diameter of the round perforation at the central part of the stainless steel support plate (2) is slightly smaller than that of the upper organic glass plate (4) and is used for the guide pipe (8) to pass through and support the upper organic glass plate (4); the round through hole on the outer side corresponds to the round through hole on the outer side of the upper organic glass plate (4) in position and is used for the stainless steel fastening bolt (7) to penetrate through.
5. A PWR reactor control rod assembly storage device as set forth in claim 4, wherein: the lower organic glass plate (9) is used for fixing the lower part of the guide tube (8), and the position of the circular through hole on the lower organic glass plate (9) corresponds to the position of the circular through hole on the upper organic glass plate (4).
6. A PWR reactor control rod assembly storage device as set forth in claim 5, wherein: the guide tube (8) 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 (8) is fixed on the upper organic glass plate (4); the bottom of the guide tube (8) is fixed on the lower organic glass plate (9).
7. A PWR reactor control rod assembly storage device as defined in claim 6, wherein: the material hardness of the upper organic glass plate (4), the lower organic glass plate (9) and the guide tube (8) is lower than that of the control rod, so that the control rod is prevented from being damaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021233201.3U CN212967144U (en) | 2020-06-29 | 2020-06-29 | PWR reactor control rod assembly storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021233201.3U CN212967144U (en) | 2020-06-29 | 2020-06-29 | PWR reactor control rod assembly storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212967144U true CN212967144U (en) | 2021-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021233201.3U Active CN212967144U (en) | 2020-06-29 | 2020-06-29 | PWR reactor control rod assembly storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212967144U (en) |
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2020
- 2020-06-29 CN CN202021233201.3U patent/CN212967144U/en active Active
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