阅读说明：本技术 一种核燃料运输容器用减震装置 (Damping device for nuclear fuel transportation container ) 是由 吴明 姚琳 邵睿 王庆 霍嘉杰 郝建生 于 2021-06-25 设计创作，主要内容包括：本发明属于涉及危险品运输技术领域,具体涉及一种核燃料运输容器用减震装置。该减震装置设置在核燃料运输容器上,包括外部减震器(1)和由外部减震器(1)内部延伸出来的内部减震器(2),内部减震器(2)的顶部设置第一连接部件(3),外部减震器(1)的底部设置第二连接部件(4),第一连接部件(3)用于内部减震器(2)与核燃料运输容器的内筒体进行连接,第二连接部件(4)用于外部减震器(1)与核燃料运输容器的壳体进行连接。本发明可实现核燃料组件的有效减震,避免了核燃料运输容器在运输时内筒体与核燃料组件之间的间隙引起核燃料组件加速度超过限值,具有结构简单、效果可靠、易于维护的特点,还可实现安全、快速卸载。(The invention belongs to the technical field of dangerous goods transportation, and particularly relates to a damping device for a nuclear fuel transportation container. This damping device sets up on nuclear fuel transport container, including outside bumper shock absorber (1) and inside bumper shock absorber (2) by outside bumper shock absorber (1) inside extension, the top of inside bumper shock absorber (2) sets up first adapting unit (3), the bottom of outside bumper shock absorber (1) sets up second adapting unit (4), first adapting unit (3) are used for inside bumper shock absorber (2) to be connected with nuclear fuel transport container's interior barrel, second adapting unit (4) are used for outside bumper shock absorber (1) to be connected with nuclear fuel transport container's casing. The invention can realize effective shock absorption of the nuclear fuel assembly, avoids acceleration of the nuclear fuel assembly from exceeding a limit value caused by a gap between the inner cylinder and the nuclear fuel assembly when the nuclear fuel transport container is transported, has the characteristics of simple structure, reliable effect and easy maintenance, and can realize safe and quick unloading.)

1. A damping device for a nuclear fuel transport container is arranged on the nuclear fuel transport container and is characterized in that: including outside bumper shock absorber (1) and by inside bumper shock absorber (2) that outside bumper shock absorber (1) inside extends out, the top of inside bumper shock absorber (2) sets up first connecting part (3), the bottom of outside bumper shock absorber (1) sets up second connecting part (4), first connecting part (3) are used for inside bumper shock absorber (2) with nuclear fuel transport container's interior barrel is connected, second connecting part (4) are used for outside bumper shock absorber (1) with nuclear fuel transport container's casing is connected.

2. A shock-absorbing device for a nuclear fuel transport vessel as set forth in claim 1, wherein: the outer shock absorber (1) is conical, the width of the bottom of the outer shock absorber is larger than that of the top of the outer shock absorber, and the inner shock absorber (2) is located in the center of the outer shock absorber (1).

3. A shock-absorbing device for a nuclear fuel transport vessel as set forth in claim 2, wherein: the space inside the outer shock absorber (1) for accommodating the inner shock absorber (2) can ensure the deformation and rebound of the inner shock absorber (2) under the excitation action.

4. A shock-absorbing device for a nuclear fuel transport vessel as set forth in claim 3, wherein: the stiffness of the outer shock absorber (1) is greater than the stiffness of the inner shock absorber (2).

5. The apparatus for damping vibration for a nuclear fuel transport vessel as set forth in claim 4, wherein: the material of the external shock absorber (1) and the internal shock absorber (2) comprises rubber, polyurethane, metal, wood or a combination form of the materials; the structure of the external shock absorber (1) and the internal shock absorber (2) comprises a block structure, a rope structure or a spring structure.

6. The apparatus for damping vibration for a nuclear fuel transport vessel as set forth in claim 5, wherein: the shock absorber comprises an outer shock absorber (1) and an inner shock absorber (2) which are of an integrated structure, wherein the bottom of the outer shock absorber (1) is connected with the bottom of the inner shock absorber (2) into a whole.

7. The apparatus for damping vibration for a nuclear fuel transport vessel as set forth in claim 5, wherein: the outer shock absorber (1) and the inner shock absorber (2) are of split structures, and the bottom of the outer shock absorber (1) and the bottom of the inner shock absorber (2) are connected to the second connecting component (4).

Technical Field

The invention belongs to the technical field of dangerous goods transportation, and particularly relates to a damping device for a nuclear fuel transportation container.

Background

The nuclear fuel transport container needs to ensure safety in the whole transport process, the nuclear fuel transport container can experience a plurality of transport working conditions such as railways, roads and sea paths in the transport process, links such as unstable hoisting and descending can be experienced in the container loading and unloading process, and the excitation from the road surface and other external factors is transmitted to the new internal assembly through the damping device in the nuclear fuel transport container, so that the acceleration value of the new assembly is increased and even exceeds the limit. Under the above multiple working conditions, in order to ensure that the components are successfully received, it should be ensured that the acceleration of the new component does not exceed the limit requirement.

In transport accident conditions, the damping means in the nuclear fuel transport vessel should ensure that the components are contained within the vessel and do not fall out of the vessel due to excitation under external accident conditions.

Therefore, in the design of the container, the damping effect under the multiple working conditions needs to be considered, and a proper damping device is arranged in the container so as to ensure that the assembly can be safely received.

In the process of realizing the transportation of the nuclear fuel assembly, the inventor finds that at least the following problems exist in the prior art:

the damping device which is specially suitable for the nuclear fuel assembly transportation container and has the advantages of good multi-working-condition universality, simple structure and easy maintenance is lacked.

Disclosure of Invention

The invention aims to provide a damping device for a nuclear fuel transport container, which ensures that the acceleration of a nuclear fuel assembly in the nuclear fuel transport container does not exceed a limit requirement in the whole process of transportation, loading and unloading of the nuclear fuel transport container through the damping effect and ensures that the nuclear fuel assembly does not scatter outside the container under the accident condition of transportation.

In order to achieve the purposes, the technical scheme adopted by the invention is that the damping device for the nuclear fuel transport container is arranged on the nuclear fuel transport container and is characterized in that: including outside bumper shock absorber and by the inside bumper shock absorber that extends out of outside bumper shock absorber, the top of inside bumper shock absorber sets up first adapting unit, the bottom of outside bumper shock absorber sets up second adapting unit, first adapting unit is used for inside bumper shock absorber with nuclear fuel transport container's interior barrel is connected, second adapting unit is used for outside bumper shock absorber with nuclear fuel transport container's casing is connected.

Further, the outer damper is conical, the bottom width is greater than the top width, and the inner damper is located at the center of the outer damper.

Further, the space inside the outer damper for accommodating the inner damper can ensure deformation and rebound of the inner damper under excitation.

Further, the stiffness of the outer damper is greater than the stiffness of the inner damper.

Further, the material of the outer damper and the inner damper comprises rubber, polyurethane, metal, wood or a combination thereof; the structure of the external shock absorber and the internal shock absorber includes a block structure, a rope structure, or a spring structure.

Further, the external damper and the internal damper are of an integrated structure, and the bottom of the external damper and the bottom of the internal damper are connected into a whole.

Further, the external shock absorber and the internal shock absorber are of split structures, and the bottom of the external shock absorber and the bottom of the internal shock absorber are both connected to the second connecting component.

The invention has the beneficial effects that:

1. after the technical scheme is adopted, the nuclear fuel assembly is loaded in the inner cylinder of the nuclear fuel transport container, so that the effective shock absorption of the nuclear fuel assembly can be realized, and the phenomenon that the acceleration of the nuclear fuel assembly exceeds the limit value due to the gap between the inner cylinder and the nuclear fuel assembly when the nuclear fuel transport container is transported is avoided.

2. The invention has simple structure, reliable effect and easy maintenance, and the damping position is arranged at the grid of the nuclear fuel assembly, thereby effectively protecting the nuclear fuel assembly. Meanwhile, the damping function can be quickly relieved, and safe and quick unloading can be realized.

Drawings

Fig. 1 is a schematic view (one-piece structure) of a shock-absorbing device for a nuclear fuel transport vessel according to an embodiment of the present invention;

fig. 2 is a schematic view (split structure) of a shock-absorbing device for a nuclear fuel transport vessel according to an embodiment of the present invention;

in the figure: 1-outer shock absorber, 2-inner shock absorber, 3-first connecting member, 4-second connecting member.

Detailed Description

The invention is further described below with reference to the figures and examples.

As shown in fig. 1 and 2, a shock absorber for a nuclear fuel transport container according to the present invention is provided in a nuclear fuel transport container, and is characterized in that: including outside bumper shock absorber 1 and by the inside bumper shock absorber 2 that extends out of outside bumper shock absorber 1, the top of inside bumper shock absorber 2 sets up first adapting unit 3, and the bottom of outside bumper shock absorber 1 sets up second adapting unit 4, and first adapting unit 3 is used for inside bumper shock absorber 2 to be connected with nuclear fuel transport container's interior barrel, and second adapting unit 4 is used for outside bumper shock absorber 1 to be connected with nuclear fuel transport container's casing.

The outer damper 1 is tapered with a bottom width greater than a top width and the inner damper 2 is located at the center of the outer damper 1.

The space inside the outer shock absorber 1 for accommodating the inner shock absorber 2 can ensure deformation and rebound of the inner shock absorber 2 under the excitation action.

The stiffness of the outer damper 1 is greater than the stiffness of the inner damper 2 and under a smaller excitation, no or less elastic deformation occurs. When a large excitation effect exists, the external shock absorber 1 and the internal shock absorber 2 are elastically deformed together to absorb impact energy, and the acceleration of the nuclear fuel assembly is ensured to meet the limit value requirement.

The materials of the inner shock absorber and the outer shock absorber are preferably selected to meet the shock absorption requirement of the nuclear fuel transport container, and the materials of the outer shock absorber 1 and the inner shock absorber 2 comprise rubber, polyurethane, metal, wood or the combination form of the materials; the structure of the outer absorber 1 and the inner absorber 2 includes a block structure, a rope structure, or a spring structure. For example, the first combination: the outer shock absorber 1 is made of metal rubber with high rigidity, and the inner shock absorber 2 is made of rubber with low rigidity; a second combination of: the outer shock absorber 1 uses a steel wire rope vibration isolator with higher rigidity, and the inner shock absorber 2 uses balsawood with lower rigidity; in a third combination: the outer damper 1 uses a metal block having a relatively high stiffness, and the inner damper 2 uses a spring having a relatively low stiffness. The outer shock absorber 1 is connected to the nuclear fuel transport vessel shell through a connecting member 4, and the inner shock absorber 2 is connected to the inner cylinder of the nuclear fuel transport vessel through a connecting member 3. The external excitation is via the housing, the outer damper 1, the inner damper 2.

When the outer shock absorber 1 and the inner shock absorber 2 may be an integral structure (see fig. 1) or a split structure (see fig. 2), the bottom of the outer shock absorber 1 is integrally connected to the bottom of the inner shock absorber 2 when the outer shock absorber 1 and the inner shock absorber 2 are integral structures.

When the outer shock absorber 1 and the inner shock absorber 2 are of a split type structure, the bottom of the outer shock absorber 1 and the bottom of the inner shock absorber 2 are both connected to the second connecting member 4.

Complete material and component tests are required in the development stage, and mechanical tests simulating transportation tests and rule requirements are required after trial production is successful, so that the rationality of the selected materials and the designed structure is proved.

The damping device provided by the invention is reasonably arranged at a plurality of positions in the nuclear fuel transportation container according to actual needs.

The device according to the present invention is not limited to the embodiments described in the specific embodiments, and those skilled in the art can derive other embodiments according to the technical solutions of the present invention, and also belong to the technical innovation scope of the present invention.