CN103106938B - A kind of spent fuel transport container with damping, protecting against shock spring assembly - Google Patents
A kind of spent fuel transport container with damping, protecting against shock spring assembly Download PDFInfo
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- CN103106938B CN103106938B CN201310032345.0A CN201310032345A CN103106938B CN 103106938 B CN103106938 B CN 103106938B CN 201310032345 A CN201310032345 A CN 201310032345A CN 103106938 B CN103106938 B CN 103106938B
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- cylindrical shell
- buffer spring
- cylinder body
- stainless steel
- damping
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Abstract
The invention belongs to nuclear power energy technical field of transportation, particularly a kind of spent fuel transport container with damping, protecting against shock spring assembly.This cask is divided into cylindrical shell, cylindrical shell top structure and cylinder body bottom structure three part; Cylindrical shell is as the container holding irradiated fuel assembly, radially be followed successively by outer cylinder body, thermofin, middle cylinder, cylindrical shell lead shield layer, inner sleeve, buffer spring positioning sleeve from outside to inside, and the radial buffer spring of many groups is evenly set between inner sleeve and buffer spring positioning sleeve; Cylindrical shell top structure is made up of stainless steel top cover and upper end; Cylinder body bottom structure by lower end, and is made up of the coated stainless steel back up pad be arranged in order from inside to outside of lower end, bottom lead shield plate, stainless steel steel bottom.The present invention not only ensure that the radioactive shield of spentnuclear fuel, heat insulation effect, also achieves the radial antidetonation of spentnuclear fuel cylindrical shell, shock resistance buffering simultaneously.
Description
Technical field
The invention belongs to nuclear power energy technical field of transportation, particularly a kind of spent fuel transport container with damping, protecting against shock spring assembly.
Background technology
The spentnuclear fuel drawn off in nuclear power plant's reactor has very strong radioactivity, needs other place be transported to beyond nuclear power plant to deal carefully with.In transportation, cask to ensure irradiated fuel assembly not only under normal circumstances structure stand intact bad, and can ensure that under special status the radiomaterial that spentnuclear fuel discharges can not be leaked in environment.
Cask is the key equipment of spentnuclear fuel transport, require that cask has very high security, can radioactive ray be shielded, also need impact resistance simultaneously, prevent spentnuclear fuel vibrations or external force effect under damage, cause a large amount of radiomaterials to be released.
Summary of the invention
The invention provides a kind of spent fuel transport container with damping, protecting against shock spring assembly, there is good radial antidetonation, impact resistance, shielding, temperature resistant capability.
The technical solution used in the present invention is:
This cask is divided into cylindrical shell, cylindrical shell top structure and cylinder body bottom structure three part;
Described cylindrical shell is as the container holding irradiated fuel assembly, radially be followed successively by outer cylinder body, thermofin, middle cylinder, cylindrical shell lead shield layer, inner sleeve, buffer spring positioning sleeve from outside to inside, and the radial buffer spring of many groups is evenly set between inner sleeve and buffer spring positioning sleeve;
Described cylindrical shell top structure is made up of stainless steel top cover and upper end;
Described cylinder body bottom structure by lower end, and is made up of the coated stainless steel back up pad be arranged in order from inside to outside of lower end, bottom lead shield plate, stainless steel steel bottom.
Described radial buffer spring is along the circumferential direction divided into 6-8 group, along drum shaft to being equidistantly divided into some groups.
Described cylinder body bottom position is provided with drainage channel and drain outlet joint, one end of drainage pipeline and the spatial joins between inner sleeve and buffer spring positioning sleeve.
The part that described drainage channel is positioned at cylindrical shell lead shield layer is inverted U passage, is beneficial to radioactive water before discharge, reduces its radioactivity.
Be all by being welded to connect between described cylindrical shell radial structure, cylindrical shell top header and upper end are bolted, conveniently assemble and disassemble material.
Beneficial effect of the present invention is:
Consider irradiated fuel assembly once in the environment long-term work of High Temperature High Pressure, its strength of materials can reduce, in order to realize the integrality of spentnuclear fuel in transportation to greatest extent, in inner barrel by adding buffer spring and corresponding buffer spring positioning sleeve, realize radial antidetonation and shock resistance.Buffer spring positioning sleeve is being axially integrative-structure, and radial local is emptied, and object reduces the quality of cutting ferrule, facilitates the welding of spring to locate.The joint arranged at drain outlet place, by welded top lead shield sheet and stainless steel substrates, realizes the sealing of joint, prevents radioactive leak.
Cylinder body bottom structure comprises by welding realization sealing, and such overlaying structure can prevent radiomaterial from bottom leakage simultaneously.
Accompanying drawing explanation
Fig. 1 is that D-D face diameter in Fig. 2 is to sectional view;
Fig. 2 is the A-A face axial section in Fig. 1;
Fig. 3 is that C-C face diameter in Fig. 2 is to sectional view;
Fig. 4 is the B-B face axial section in Fig. 1.
Number in the figure:
1-cylindrical shell lead shield layer, 2-middle layer, 3-thermofin, 4-outer cylinder body, 5-buffer spring positioning sleeve, the radial buffer spring of 6-, 7-irradiated fuel assembly, 8-inner sleeve, 9-upper end, 10-stainless steel top cover, 11-lower end, 12-stainless steel back up pad, lead shield layer bottom 13-, 14-stainless steel bottom, 15-drainage pipeline, 16-drain outlet joint.
Embodiment
The invention provides a kind of spent fuel transport container with damping, protecting against shock spring assembly, below in conjunction with the drawings and specific embodiments, the present invention will be further described.
The structure of this container as Figure 1-Figure 4, is divided into cylindrical shell, cylindrical shell top structure and cylinder body bottom structure three part.
Cylindrical shell is as the container holding irradiated fuel assembly, radially be followed successively by outer cylinder body 4, thermofin 3, middle cylinder 2, cylindrical shell lead shield layer 1, inner sleeve 8, buffer spring positioning sleeve 5 from outside to inside, by being welded to connect between each several part, to realize the sealing of cylindrical shell.8 groups of radial buffer springs 6 are evenly set between inner sleeve 8 and buffer spring positioning sleeve 5, and radial buffer spring 6 is along drum shaft to equidistant distribution.
Cylindrical shell top structure is made up of stainless steel top cover 10 and upper end 9, is bolted between the two.With outer cylinder body 4, thermofin 3, middle layer 2, cylindrical shell lead shield layer 1, inner sleeve 8 welded top while of upper end 9.
Cylinder body bottom structure by lower end 11, and is made up of the coated stainless steel back up pad 12 be arranged in order from inside to outside of lower end 11, bottom lead shield plate 13, stainless steel steel bottom 14, makes cylinder body bottom obtain good sealing, prevents radioactive leakage.Lower end 11 inside is welded with stainless steel back up pad 12, lead shield plate 13 and stainless steel bottom 14 outward flange.
Cylinder body bottom position is provided with drainage channel 15 and drain outlet joint 16, one end of drainage pipeline 15 and the spatial joins between inner sleeve 8 and buffer spring positioning sleeve 5.The part that drainage channel 15 is positioned at cylindrical shell lead shield layer 1 is inverted U passage, is beneficial to radioactive water before discharge, reduces its radioactivity.
Claims (4)
1. with a spent fuel transport container for damping, protecting against shock spring assembly, it is characterized in that, be divided into cylindrical shell, cylindrical shell top structure and cylinder body bottom structure three part;
Described cylindrical shell is as the container holding irradiated fuel assembly, radially be followed successively by outer cylinder body (4), thermofin (3), middle cylinder (2), cylindrical shell lead shield layer (1), inner sleeve (8), buffer spring positioning sleeve (5) from outside to inside, and the radial buffer spring of many groups (6) are evenly set between inner sleeve (8) and buffer spring positioning sleeve (5); Described buffer spring positioning sleeve (5) is being axially integrative-structure, and radial local is emptied;
Described cylindrical shell top structure is made up of stainless steel top cover (10) and upper end (9); With outer cylinder body (4), thermofin (3), middle layer (2), cylindrical shell lead shield layer (1), inner sleeve (8) welded top the while of described upper end (9);
Described cylinder body bottom structure by lower end (11), and is made up of the coated stainless steel back up pad (12) be arranged in order from inside to outside of lower end (11), bottom lead shield plate (13), stainless steel steel bottom (14).
2. a kind of spent fuel transport container with damping, protecting against shock spring assembly according to claim 1, is characterized in that, described radial buffer spring (6) is along the circumferential direction divided into 6-8 group, along drum shaft to being equidistantly divided into some groups.
3. a kind of spent fuel transport container with damping, protecting against shock spring assembly according to claim 1, it is characterized in that, described cylinder body bottom position is provided with drainage channel (15) and drain outlet joint (16), one end of drainage pipeline (15) and the spatial joins between inner sleeve (8) and buffer spring positioning sleeve (5).
4. a kind of spent fuel transport container with damping, protecting against shock spring assembly according to claim 3, it is characterized in that, the part that described drainage channel (15) is positioned at cylindrical shell lead shield layer (1) is inverted U passage, is beneficial to radioactive water before discharge, reduces its radioactivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310032345.0A CN103106938B (en) | 2013-01-28 | 2013-01-28 | A kind of spent fuel transport container with damping, protecting against shock spring assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310032345.0A CN103106938B (en) | 2013-01-28 | 2013-01-28 | A kind of spent fuel transport container with damping, protecting against shock spring assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103106938A CN103106938A (en) | 2013-05-15 |
| CN103106938B true CN103106938B (en) | 2015-10-21 |
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| CN201310032345.0A Expired - Fee Related CN103106938B (en) | 2013-01-28 | 2013-01-28 | A kind of spent fuel transport container with damping, protecting against shock spring assembly |
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| CN (1) | CN103106938B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3006098B1 (en) * | 2013-05-22 | 2015-06-26 | Tn Int | IRRADIE FUEL STORAGE PACKAGE INCLUDING AMORTIZED CASE GUIDANCE RAILS |
| CN104517660A (en) * | 2013-09-29 | 2015-04-15 | 大连宝原核设备有限公司 | Spent fuel transportation container |
| CN104733066A (en) * | 2013-12-20 | 2015-06-24 | 中核建中核燃料元件有限公司 | Fixed tying method for conveying fuel subassemblies |
| CN104952505A (en) * | 2015-06-12 | 2015-09-30 | 中国核电工程有限公司 | Container cover for transporting container for transporting spherical nuclear fuel elements |
| WO2018162768A1 (en) * | 2017-03-08 | 2018-09-13 | Equipos Nucleares, S.A. , S.M.E. | Impact limiter for containers for transporting spent nuclear fuel |
| CN107221357B (en) * | 2017-05-24 | 2019-04-09 | 安徽科创智慧知识产权服务有限公司 | Heat exchanging chamber in integral vibration damping type reactor evaporator |
| CN108648844B (en) * | 2018-05-17 | 2021-07-02 | 江苏中海华核环保有限公司 | Novel spent fuel transportation equipment |
| ES2737840B2 (en) * | 2018-07-15 | 2021-06-07 | Equipos Nucleares S A S M E | RADIOLOGICAL, THERMAL AND STRUCTURAL PROTECTION SYSTEM OF STORAGE SYSTEMS FOR RADIOACTIVE MATERIALS. |
| CN111108568B (en) * | 2018-11-26 | 2023-08-25 | 中广核研究院有限公司 | Fuel assembly transport container and cushioning member thereof |
| CN111430057B (en) * | 2020-03-18 | 2021-06-08 | 张云逢 | High radioactive nuclear waste container |
| CN112820435A (en) * | 2021-01-07 | 2021-05-18 | 上海核工程研究设计院有限公司 | Storage sealing device with pressing component |
| CN113223742B (en) * | 2021-04-19 | 2022-09-23 | 中广核工程有限公司 | Radiation shielding and insulating device |
| CN113878773B (en) * | 2021-10-22 | 2022-08-09 | 中国原子能科学研究院 | Resin-based neutron shielding material and preparation method thereof |
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| CN201126724Y (en) * | 2007-12-11 | 2008-10-01 | 核工业第二研究设计院 | Transportation container for researching stack spent fuel |
| CN101625907A (en) * | 2009-07-22 | 2010-01-13 | 中国广东核电集团有限公司 | Shielding cover for preventing radiation of spent fuel |
| CN203026182U (en) * | 2013-01-28 | 2013-06-26 | 华北电力大学 | Spent fuel transporting container with damping and impact-preventing spring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10153695A (en) * | 1996-11-21 | 1998-06-09 | Ishikawajima Harima Heavy Ind Co Ltd | Storage structure of radioactive solid waste |
| JPH11316297A (en) * | 1998-05-01 | 1999-11-16 | Mitsubishi Heavy Ind Ltd | Spent fuel transportation container and transportation method therefor |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201126724Y (en) * | 2007-12-11 | 2008-10-01 | 核工业第二研究设计院 | Transportation container for researching stack spent fuel |
| CN101625907A (en) * | 2009-07-22 | 2010-01-13 | 中国广东核电集团有限公司 | Shielding cover for preventing radiation of spent fuel |
| CN203026182U (en) * | 2013-01-28 | 2013-06-26 | 华北电力大学 | Spent fuel transporting container with damping and impact-preventing spring device |
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| CN103106938A (en) | 2013-05-15 |
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