JPH0325199Y2 - - Google Patents
Info
- Publication number
- JPH0325199Y2 JPH0325199Y2 JP15084985U JP15084985U JPH0325199Y2 JP H0325199 Y2 JPH0325199 Y2 JP H0325199Y2 JP 15084985 U JP15084985 U JP 15084985U JP 15084985 U JP15084985 U JP 15084985U JP H0325199 Y2 JPH0325199 Y2 JP H0325199Y2
- Authority
- JP
- Japan
- Prior art keywords
- nuclear fuel
- fuel assembly
- shearing
- blade
- shearing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Shearing Machines (AREA)
Description
【考案の詳細な説明】
〈産業上の利用分野〉
本考案は、複数の核燃料棒を束ねてなる核燃料
集合体の剪断装置に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a shearing device for a nuclear fuel assembly formed by bundling a plurality of nuclear fuel rods.
〈従来の技術〉
使用済核燃料の再処理工場では、使用済核燃料
を約５cm前後の小片に剪断した後、溶解槽へ送つ
て溶解している。従来、この核燃料を剪断する装
置は、第２図ａに示すように、上下に駆動されて
使用済核燃料棒を複数束ねてなる核燃料集合体１
１を剪断装置本体１２に固定するギヤグ１３と、
そのギヤグ１３に近接して設けられると共に上下
に駆動される可動剪断刃１４と、剪断装置本体１
２に固設置された受刃１５と、核燃料集合体１１
を前方へ送り出すプツシヤ１６とを有している。
剪断作業に当たつては先ず、第２図ｂに示すよう
に、プツシヤ１６で核燃料集合体１１を前方に所
定量押し出す。次に、第２図ｃに示すように、ギ
ヤグ１３を下降させて核燃料集合体１１を押え付
けて固定すると共に、第２図ｄに示すように可動
剪断刃１４を下降させて受刃１５との協働により
核燃料集合体１１の先端部を剪断する。ここで、
剪断された核燃料の小片１１ａはその下方に配置
された溶解槽内へ落下する。その後、第２図ｅに
示すようにギヤグ１３及び可動剪断刃１４を上方
へ退避させ、続いて第２図ｆに示すように、プツ
シヤ１６で核燃料集合体１１を再び所定量を押し
出し、ギヤグ１３で押さえて可動剪断刃１４で剪
断するという動作を繰り返す。<Conventional Technology> At spent nuclear fuel reprocessing plants, spent nuclear fuel is sheared into pieces of about 5 cm and then sent to a melting tank where they are melted. Conventionally, a device for shearing nuclear fuel has been used to shear a nuclear fuel assembly 1 which is driven vertically to bundle a plurality of spent nuclear fuel rods, as shown in Fig. 2a.
1 to the shearing device main body 12;
A movable shearing blade 14 that is provided close to the gear 13 and is driven up and down, and a shearing device main body 1
2 and the receiving blade 15 fixedly installed on the nuclear fuel assembly 11
It has a pusher 16 that sends out the material forward.
In the shearing operation, first, as shown in FIG. 2b, the nuclear fuel assembly 11 is pushed forward by a predetermined amount using the pusher 16. Next, as shown in FIG. 2c, the gear 13 is lowered to press and fix the nuclear fuel assembly 11, and as shown in FIG. The tip of the nuclear fuel assembly 11 is sheared by the cooperation of the two. here,
The sheared small pieces of nuclear fuel 11a fall into the melting tank arranged below. Thereafter, as shown in FIG. 2e, the gear 13 and the movable shearing blade 14 are retracted upward, and then, as shown in FIG. The operation of pressing with the movable shearing blade 14 and shearing with the movable shearing blade 14 is repeated.
〈考案が解決しようとする問題点〉
ところが、従来の剪断装置では第２図ｅ，ｆで
示す状態においては、ギヤグ１３が上方へ退避し
ているため核燃料集合体１１が拘束されていない
フリーの状態となつてしまう。すなわち、従来は
プツシヤ１６を働かせて核燃料集合体１１を前方
へ送り出す時はギヤグ１３を上方へ退避させてお
かなければならず、そのため剪断作業が進行して
核燃料集合体１１の残りの長さが短くなつた場合
にプツシヤ１６で押し出した時に核燃料集合体１
１が剪断される前に長いまま剪断装置から落下し
てしまうという問題点があつた。所定の長さより
長い核燃料棒が落下すると、それが溶解槽までの
径路の途中で詰つたり、あるいは、溶解槽での溶
解速度が低下する等の不具合を生じる。<Problems to be solved by the invention> However, in the conventional shearing device, in the states shown in FIG. It becomes a state. That is, conventionally, when the pusher 16 was operated to send the nuclear fuel assembly 11 forward, the gear 13 had to be retracted upward, so that the shearing work progressed and the remaining length of the nuclear fuel assembly 11 was reduced. When the fuel assembly 1 is pushed out with the pusher 16 when it becomes short,
There was a problem in that the material 1 would fall from the shearing device for a long time before it was sheared. If a nuclear fuel rod longer than a predetermined length falls, it may cause problems such as clogging the path to the melting tank or reducing the melting rate in the melting tank.
〈問題点を解決するための手段〉
本考案は、上述した従来の核燃料集合体の剪断
装置における問題点を解決するものであり、剪断
作業の途中で核燃料集合体がフリーの状態となる
ことを防止し、それによつて最後まで核燃料集合
体の剪断を可能にした核燃料集合体剪断装置を提
供することを目的としている。<Means for Solving the Problems> The present invention solves the above-mentioned problems in the conventional shearing device for nuclear fuel assemblies, and prevents the nuclear fuel assemblies from becoming free during the shearing operation. It is an object of the present invention to provide a nuclear fuel assembly shearing device which prevents the shearing of nuclear fuel assemblies and thereby makes it possible to shear nuclear fuel assemblies to the end.
この目的を達成するための本考案にかかる核燃
料集合体剪断装置の構成は、細長い筒内に核燃料
が詰められた核燃料棒を複数束ねた核燃料集合体
を剪断する装置において、核燃料集合体を受け入
れる空間の入口に臨んで配置され該核燃料集合体
を両側から挾圧して保持すると共に回転して該核
燃料集合体を送り出す一対の掴み歯車と、その掴
み歯車に近接して配置された可動剪断刃及びそれ
と協働する受刃とを具えたことを特徴とするもの
である。 The configuration of the nuclear fuel assembly shearing device according to the present invention for achieving this purpose is that the device shears a nuclear fuel assembly made by bundling a plurality of nuclear fuel rods filled with nuclear fuel in a long and narrow cylinder, and has a space for receiving the nuclear fuel assembly. a pair of gripping gears disposed facing the inlet of the nuclear fuel assembly, which clamps and holds the nuclear fuel assembly from both sides and rotates to send out the nuclear fuel assembly; a movable shearing blade disposed close to the gripping gear; It is characterized by having a cooperating receiving blade.
〈作用〉
一対の掴み歯車は、核燃料集合体を挾持し且つ
その状態で回転することで、核燃料集合体を拘束
したまま前方に送り出す。掴み歯車により所定量
送り出された核燃料集合体は可動剪断刃と受刃に
より剪断される。<Operation> The pair of gripping gears grips the nuclear fuel assembly and rotates in this state, thereby sending the nuclear fuel assembly forward while being restrained. The nuclear fuel assembly delivered by a predetermined amount by the gripping gear is sheared by a movable shearing blade and a receiving blade.
〈実施例〉
以下、本考案の一実施例を図面により説明す
る。第１図は本考案の一実施例にかかる核燃料集
合体剪断装置の概念図である。<Example> An example of the present invention will be described below with reference to the drawings. FIG. 1 is a conceptual diagram of a nuclear fuel assembly shearing device according to an embodiment of the present invention.
第１図に示すように、溶解槽等の核燃料集合体
１１を受け入れる空間の入口に臨んで剪断装置本
体１２には、剪断される核燃料集合体１１を挾ん
で上下に対向して一対の掴み歯車１７ａ，１７ｂ
が配置される。掴み歯車１７ａ，１７ｂは相対的
に接近離反可能に取付けられており、押圧機構１
８により両掴み歯車１７ａ，１７ｂで核燃料集合
体１１を挾圧して保持すると共に図示しない回転
駆動機構により両掴み歯車１７ａ，１７ｂを同時
に互いに反対方向に回転駆動することで挾持した
核燃料集合体１１を前方に送り出したり後方に引
き込んだりできるようになつている。また、それ
ら掴み歯車１７ａ，１７ｂに近接して上下に駆動
される可動剪断刃１４が設けられると共にその可
動剪断刃１４と協働して剪断作用を行う受刃１５
が剪断装置本体１２に固設されている。 As shown in FIG. 1, the shearing device main body 12 facing the entrance of the space that receives the nuclear fuel assemblies 11, such as a melting tank, has a pair of gripping gears that face each other vertically and sandwich the nuclear fuel assemblies 11 to be sheared. 17a, 17b
is placed. The gripping gears 17a and 17b are attached so that they can be approached and separated from each other, and the pressing mechanism 1
8, the nuclear fuel assembly 11 is clamped and held by both gripping gears 17a and 17b, and both gripping gears 17a and 17b are simultaneously driven to rotate in mutually opposite directions by a rotational drive mechanism (not shown), thereby the clamped nuclear fuel assembly 11 is held. It can be sent forward or retracted backwards. Further, a movable shearing blade 14 that is driven up and down is provided close to the gripping gears 17a and 17b, and a receiving blade 15 that performs a shearing action in cooperation with the movable shearing blade 14.
is fixed to the shearing device main body 12.
このような構成を有する本剪断装置では、掴み
歯車１７ａ，１７ｂで核燃料集合体１１を挾持し
且つその状態で掴み歯車１７ａ，１７ｂを回転さ
せることで核燃料集合体を拘束したまま送り出す
ことができ、送り出された核燃料集合体１１は可
動剪断刃１４と受刃１５とにより順次細断され
る。 In this shearing device having such a configuration, the nuclear fuel assembly 11 is held between the gripping gears 17a and 17b, and by rotating the gripping gears 17a and 17b in this state, the nuclear fuel assembly can be sent out while being restrained. The delivered nuclear fuel assembly 11 is sequentially shredded by the movable shearing blade 14 and the receiving blade 15.
〈考案の効果〉
以上、一実施例を挙げて説明したように本考案
によれば、一対の掴み歯車により核燃料集合体を
拘束し且つ拘束したまま送り出すことができるの
で、剪断作業の途中で核燃料集合体がフリー状態
となることが無く、従つて最後まで核燃料集合体
を所定長さで剪断することができ、未剪断長尺燃
料棒の溶解槽への落下が防止できる。<Effects of the Invention> As explained above with reference to an embodiment, according to the present invention, the nuclear fuel assembly can be restrained by a pair of gripping gears and sent out while being restrained, so that the nuclear fuel assembly can be released during shearing work. The assembly does not become free, so the nuclear fuel assembly can be sheared to a predetermined length until the end, and unsheared long fuel rods can be prevented from falling into the melting tank.
第１図は本考案の一実施例にかかる核燃料集合
体剪断装置の概念図、第２図ａ〜ｆは従来の剪断
装置の作用を説明するための概念図である。
図面中、１１は核燃料集合体、１２は剪断装置
本体、１４は可動剪断刃、１５は受刃、１７ａ，
１７ｂは掴み歯車である。
FIG. 1 is a conceptual diagram of a nuclear fuel assembly shearing device according to an embodiment of the present invention, and FIGS. 2 a to 2f are conceptual diagrams for explaining the operation of a conventional shearing device. In the drawing, 11 is a nuclear fuel assembly, 12 is a shearing device main body, 14 is a movable shearing blade, 15 is a receiving blade, 17a,
17b is a gripping gear.
Claims (1)
数束ねた核燃料集合体を剪断する装置において、
核燃料集合体を受け入れる空間の入口に臨んで配
置され該核燃料集合体を両側から挾圧して保持す
ると共に回転して該核燃料集合体を送り出す一対
の掴み歯車と、その掴み歯車に近接して配置され
た可動剪断刃及びそれと協働する受刃とを具えた
ことを特徴とする核燃料集合体剪断装置。 In a device that shears a nuclear fuel assembly, which is a bundle of multiple nuclear fuel rods filled with nuclear fuel in a long and narrow cylinder,
A pair of gripping gears, which are arranged facing the entrance of a space for receiving a nuclear fuel assembly, clamp and hold the nuclear fuel assembly from both sides, and rotate to send out the nuclear fuel assembly; A nuclear fuel assembly shearing device comprising a movable shearing blade and a receiving blade that cooperates with the movable shearing blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15084985U JPH0325199Y2 (en) | 1985-10-03 | 1985-10-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15084985U JPH0325199Y2 (en) | 1985-10-03 | 1985-10-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6259897U JPS6259897U (en) | 1987-04-14 |
| JPH0325199Y2 true JPH0325199Y2 (en) | 1991-05-31 |
Family
ID=31067365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15084985U Expired JPH0325199Y2 (en) | 1985-10-03 | 1985-10-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0325199Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5951335B2 (en) * | 2012-04-17 | 2016-07-13 | 三菱重工業株式会社 | Spent fuel shearing method, handling method and fuel storage container |
-
1985
- 1985-10-03 JP JP15084985U patent/JPH0325199Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6259897U (en) | 1987-04-14 |
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