CN212847711U - Horizontal middle-open type double-component fuel transportation container - Google Patents
Horizontal middle-open type double-component fuel transportation container Download PDFInfo
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- CN212847711U CN212847711U CN202020514769.6U CN202020514769U CN212847711U CN 212847711 U CN212847711 U CN 212847711U CN 202020514769 U CN202020514769 U CN 202020514769U CN 212847711 U CN212847711 U CN 212847711U
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Abstract
The utility model provides a horizontal middle-open type double-component fuel transportation container, which comprises an outer shell, an inner shell and an inner and outer shell connecting device; the shell is divided into an upper shell part and a lower shell part, a middle split surface is formed between the upper shell part and the lower shell part, and the middle split surfaces of the shells are fixedly connected through bolts; the inner shell is formed by surrounding inner shell door plates, the inner shell door plates are connected through hinges, the end parts of the hinges are provided with quick assembling and disassembling locking devices, neutron absorption plates are arranged on the inner side of the inner shell, and the contact parts of the inner shell and fuel are provided with a plurality of rubber compression blocks; the inner shell and the outer shell are connected by the inner and outer shell coupling means. The transportation container has the functions of protecting a new fuel assembly from being damaged due to vibration and impact, preventing dirt from being polluted, keeping the subcritical state of the fuel assembly, supplying the fuel assembly for vertical loading and unloading and the like in the normal transportation and operation processes.
Description
Technical Field
The utility model relates to a nuclear fuel transport container relates to a new fuel transport container that dual module transported simultaneously.
Background
At present, most of new fuel transport containers used by AP1000 nuclear power plants in China depend on import, the product price is high, and the order period is long. In addition, nuclear power plants of the heap type, such as CAP1400, which are important technical specialties, have no fuel assembly transportation containers available for export. Therefore, there is an urgent need to develop a new fuel transport container to solve the above problems.
The new fuel shipping container is used to protect new fuel assemblies during shipping from a nuclear fuel manufacturing plant to a nuclear power plant. In terms of safety function, the device ensures critical and shielding safety of the new fuel assembly in the event of accident, such as the event of a drop, puncture, flooding, etc. From the use angle, this equipment should avoid producing phenomenons such as colliding with, vibration, aversion in fuel assembly transportation, has advantages such as conveniently loading and unloading fuel, anti rain drenches, conveniently monitors the vibration.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that needs solve provides a nuclear fuel transport container that is used for the dual module to transport simultaneously for new fuel assembly transportation of nuclear power plants such as CAP 1400. The transport container has the functions of protecting the new fuel assemblies from damage caused by vibration and impact, preventing dirt pollution, maintaining the subcritical state of the fuel assemblies, providing for vertical loading and unloading of the fuel assemblies and the like during normal transportation and operation.
A horizontally split two-component fuel transport container comprising an outer shell, an inner shell, and inner and outer shell coupling means;
the shell is divided into an upper shell part and a lower shell part, a middle split surface is formed between the upper shell part and the lower shell part, and the middle split surfaces of the shells are fixedly connected through bolts; polyurethane foam materials are filled in the shell and used for absorbing vibration and absorbing heat under the working conditions of falling and fire accidents; the shell is provided with a plurality of exhaust holes for exhausting after polyurethane is gasified under the condition of burning; a moderator is arranged at the contact position of the outer shell and the inner shell and used for maintaining the goods package and the array thereof in a subcritical state under normal transportation conditions and accident transportation conditions; a layer of ceramic fiber paper board is arranged around the moderator and used for isolating the heat of a fire scene and protecting polyethylene;
the inner shell is formed by surrounding inner shell door plates, the inner shell door plates are connected through hinges, and the end parts of the hinges are provided with quick assembling and disassembling locking devices, so that the cover closing operation in the process of assembling and disassembling the nuclear fuel is facilitated; a neutron absorption plate is arranged on the inner side of the inner shell and used for reducing the dosage rate on the surface and the periphery of the container; a plurality of rubber compression blocks are arranged at the contact part of the inner shell and the fuel; the fuel assembly is absorbed and vibrated in the transportation process, and in order to facilitate vertical lifting of the fuel assembly, the upper part of the inner shell is provided with an L-shaped flip cover and is matched with an inner shell bolt for positioning;
the inner shell and the outer shell are connected by the inner and outer shell coupling means.
Preferably, the upper part of the shell is provided with a supporting lifting lug for bearing and positioning during hoisting and stacking of the containers up and down; and 3 reinforcing ribs are welded on the upper part of the shell and used for reinforcing the integral structure.
Preferably, two bottom supports are symmetrically welded on two sides of the lower part of the shell and used for horizontally placing a bearing; two fork frames are welded in the middle of the bottom of the shell, so that the container is convenient to fork and take.
Preferably, two circles of rubber sealing strips are arranged on the middle section of the shell.
Preferably, the shell material is 06Cr19Ni10 stainless steel, and is used for structural support and corrosion prevention.
Preferably, the inner casing is arranged side by side with the containment spaces of two fuel assemblies between which the moderator is arranged.
Preferably, the neutron absorption plate is provided with a cork rubber plate at the position of the contact assembly, so that the assembly is prevented from being scratched during assembly, disassembly and transportation.
Preferably, an accelerometer is arranged at the end part of the inner shell, so that the acceleration peak condition in the fuel loading and unloading and transportation processes is conveniently monitored.
Preferably, the inner shell is made of 6000 series aluminum alloy as the main material for structurally supporting and containing the fuel assembly.
The horizontal split-center double-component new fuel transport container has the following characteristics:
1) the device can be used for synchronously transporting two fuel assemblies, reduces assembly and disassembly operations compared with a single-assembly container, and improves the working efficiency;
2) the shell is made of 06Cr19Ni10 stainless steel serving as a main material and is connected in a welding mode, so that the corrosion resistance and the durability of the container are improved;
3) the shell is filled with polyurethane foam with two densities, and the material has strong vibration absorption capacity, can be gasified and absorb heat at high temperature, and improves the vibration absorption and heat resistance of the container;
4) the inner shell is made of 6000 series aluminum alloy as a main material and is connected in a hinge connection mode, so that the disassembly is convenient and the overall quality of the container is reduced;
5) two circles of rubber sealing strips are arranged on the middle section of the outer shell and used for sealing the outer shell and preventing water and other impurities from entering the inner shell;
drawings
FIG. 1 is a schematic view of a horizontally split two-component new fuel shipping container;
wherein, 1, lifting lugs and a positioning device; 2, reinforcing ribs; 3, the upper part of the shell; 4, a bolt connecting piece; 5 an inner shell assembly; 6, a vibration absorbing device; 7, bottom support; 8 bottom neutron moderator; 9, the lower part of the shell; 10 a forklift frame; 11 inner and outer shell coupling means.
FIG. 2 is a schematic cross-sectional view of a horizontal mid-open dual-component new fuel transport container;
wherein, 3 the upper housing; 8 neutron moderator; 9 a lower housing; 11 inner and outer shell coupling means; 12 inner shell side door panels; 13 polyurethane shock-absorbing material; 14 an inner shell upper door panel; 15 a neutron absorbing plate; 16 a fuel assembly; 17 cork rubber;
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
The patent proposes an embodiment of a horizontal split double-module new fuel transport container, the external dimensions of which are 5850mm × 1100mm × 900mm (length × width × height), the mass of the empty container (outer shell + inner shell) is 2.3t, and the total mass of the container filled with two fuel modules is about 4.1 t. Has good shock resistance, impact resistance, shielding property and heat resistance. The use environment of the container is as follows:
design temperature: 40 ℃ below zero to 70 DEG C
Designing pressure: atmospheric pressure
Relative humidity: 5 to 100 percent
The use environment is as follows: outdoor/indoor
The transportation mode is as follows: railway, road, transmission and transportation
The transport container is composed of an upper outer shell, an inner shell assembly, an outer shell lower portion and accessories. During the design of the container, various works such as structural design, drop analysis, thermal calculation, critical calculation, shielding calculation and the like are carried out, and the design structure is shown as attached figures 1 and 2.
The upper shell is mainly made of 06Cr19Ni10 stainless steel and is used for structural support and corrosion prevention. Polyurethane foam material is filled in the shell and is used for absorbing vibration and absorbing heat under the working conditions of falling and fire accidents. The shell is provided with a plurality of exhaust holes for exhausting after the polyurethane is gasified under the fire working condition. And the contact positions of the outer shell and the inner shell are provided with a plurality of ultra-high molecular weight polyethylene plates for maintaining the goods package and the array thereof in a subcritical state under normal transportation conditions and accident transportation conditions. A layer of ceramic fiber paper board is arranged around the polyethylene moderator and used for isolating heat of a fire scene and protecting polyethylene. The upper part of the shell is provided with a supporting lifting lug for bearing and positioning during hoisting and stacking of the container. The upper part of the shell is also welded with 3 reinforcing ribs for reinforcing the integral structure.
The inner shell is made of 6000 series aluminum alloy and is used for structurally supporting and containing the fuel assembly. The inner shell adopts a side-by-side arrangement mode, a containing space of two fuel assemblies is designed, and an ultrahigh molecular weight polyethylene plate is arranged between the two assemblies. The door plates of the inner shell are connected through a hinge, and the end part of the hinge is provided with a quick assembling and disassembling locking device, so that the cover closing operation in the process of assembling and disassembling the nuclear fuel is facilitated. And a boron-aluminum alloy neutron absorption plate is arranged on the inner side of the inner shell and used for reducing the dosage rate on the surface and the periphery of the container. A cork rubber plate is arranged between the neutron absorption plate and the component, so that the component is prevented from being scratched during assembly, disassembly and transportation. The contact part of the inner shell and the fuel assembly is also designed with a plurality of rubber compression blocks to absorb the vibration generated by the fuel assembly in the transportation process, and the upper part of the inner shell is designed with an L-shaped flip cover and matched with a bolt for positioning in order to conveniently and vertically hoist the fuel assembly. An accelerometer is designed at the end part of the inner shell, so that the acceleration peak condition in the fuel loading and unloading and transportation processes is conveniently monitored.
The main material of the lower part of the shell is 06Cr19Ni10 stainless steel material which is used for structural support and corrosion prevention. Polyurethane foam material is filled in the lower part of the shell and is used for absorbing vibration and absorbing heat under the working conditions of falling and fire accidents. The shell is provided with a plurality of exhaust holes for exhausting after the polyurethane is gasified under the fire working condition. And the contact positions of the outer shell and the inner shell are provided with a plurality of ultra-high molecular weight polyethylene plates for maintaining the goods package and the array thereof in a subcritical state under normal transportation conditions and accident transportation conditions. A layer of ceramic fiber paper board is arranged around the polyethylene moderator and used for isolating heat of a fire scene and protecting polyethylene. And a polyurethane vibration buffering and absorbing device is arranged in the lower part of the shell. Two bottom supports are symmetrically welded on two sides of the lower portion of the shell and used for horizontally placing bearing. Two fork frames are welded in the middle of the bottom of the shell, so that the container is convenient to fork and take.
The accessory design mainly comprises: the device comprises an accelerometer support, a lead sealing block, an assembly axial positioning support rod, an inner shell locking device, an inner shell and outer shell connecting device and the like.
The embodiment of the utility model provides a design and new fuel assembly loading, transportation and dismantlement method are still provided.
1. Nuclear fuel loading
As shown in fig. 1, before loading fuel, the split bolt 4 is first removed from the housing, and the lifting lug and positioning device 1 is lifted off the upper housing 3 as a whole. The inner shell assembly 5 and the lower part of the outer shell are tilted together into a vertical position by means of a container tilting device.
And opening the bolt of the inner shell and opening the flip cover at the upper part. And placing the locking devices of the inner shells at the opening positions to push the door plates of the inner shells open.
Lifting and placing the fuel assembly on the bottom plate of the inner shell, closing the door plate of the inner shell, and placing the locking device of the inner shell in a closed state. The upper flip cover is closed, and the bolt of the inner shell is inserted.
And (3) turning the container to be in a horizontal state by using container turning equipment, reinstalling the upper shell, reinstalling the split bolt in the shell, and installing a lead seal.
2. Nuclear fuel transport
The fuel transport container is hoisted into the fuel transport container by a special hoist, is bound by a specified method, and the fuel assembly is transported to a nuclear power plant by a fuel transport vehicle with air shock absorption.
3. Nuclear fuel disassembly
As shown in fig. 1, before fuel is removed, the split bolt 4 in the housing is removed, and the lifting lug and positioning device 1 integrally lifts the upper part 3 of the housing. The inner shell assembly 5 and the lower part of the outer shell are tilted together into a vertical position by means of a container tilting device.
And opening the bolt of the inner shell and opening the flip cover at the upper part. The fuel assembly is temporarily suspended using a crane. And placing the locking devices of the inner shells at the opening positions to push the door plates of the inner shells open.
And lifting the fuel assembly integrally. And closing the door plate of the inner shell and placing the locking device of the inner shell in a closed state. The upper flip cover is closed, and the bolt of the inner shell is inserted.
And (3) turning the container to be in a horizontal state by using container turning equipment, reinstalling the upper shell, reinstalling the split bolt in the shell, and installing a lead seal.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. A horizontally split two-component fuel transport container comprising an outer shell, an inner shell, and inner and outer shell coupling means;
the shell is divided into an upper shell part and a lower shell part, a middle split surface is formed between the upper shell part and the lower shell part, and the middle split surfaces of the shells are fixedly connected through bolts; polyurethane foam material is filled in the outer shell, a plurality of exhaust holes are formed in the outer shell, a moderator is installed at the contact position of the outer shell and the inner shell, and a layer of ceramic fiber paperboard is arranged on the periphery of the moderator;
the inner shell is formed by surrounding inner shell door plates, the inner shell door plates are connected through hinges, the end parts of the hinges are provided with quick assembling and disassembling locking devices, neutron absorption plates are arranged on the inner side of the inner shell, and the contact parts of the inner shell and fuel are provided with a plurality of rubber compression blocks; the upper part of the inner shell is provided with an L-shaped flip cover and is matched with an inner shell bolt for positioning;
the inner shell and the outer shell are connected by the inner and outer shell coupling means.
2. The horizontally split dual module fuel transport vessel of claim 1, wherein the upper portion of the shell is fitted with supporting lugs and 3 reinforcing bars are welded to the upper portion of the shell.
3. The horizontally split double unit fuel transport vessel of claim 1 wherein two bottom supports are symmetrically welded to the lower portion of the shell on both sides, and two fork carriages are welded to the middle of the bottom of the shell.
4. A horizontally split dual module fuel shipping container according to claim 1 wherein the outer shell mid-section is provided with two rubber seals.
5. The horizontally split dual component fuel transport vessel of claim 1, wherein said outer shell material is 06Cr19Ni10 stainless steel.
6. A horizontally split dual module fuel transport container as claimed in claim 1 wherein said inner shell is arranged side by side with the containment spaces of two fuel modules with moderator disposed between them.
7. A horizontally split dual component fuel transport vessel as claimed in claim 1 wherein the neutron absorbing sheet is arranged with a cork rubber sheet at the contact component location.
8. A horizontally split dual module fuel transport container as claimed in claim 1 wherein said inner shell end is provided with an accelerometer.
9. A horizontally split, two-component fuel transport container as claimed in claim 1 wherein said inner shell is made of 6000 series aluminum alloy as the primary material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020514769.6U CN212847711U (en) | 2020-04-09 | 2020-04-09 | Horizontal middle-open type double-component fuel transportation container |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020514769.6U CN212847711U (en) | 2020-04-09 | 2020-04-09 | Horizontal middle-open type double-component fuel transportation container |
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| CN212847711U true CN212847711U (en) | 2021-03-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021204265A1 (en) * | 2020-04-09 | 2021-10-14 | 上海核工程研究设计院有限公司 | Nuclear fuel transport container |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021204265A1 (en) * | 2020-04-09 | 2021-10-14 | 上海核工程研究设计院有限公司 | Nuclear fuel transport container |
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Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |