JPH0222595A - Control rod for high temperature gas furnace - Google Patents
Control rod for high temperature gas furnaceInfo
- Publication number
- JPH0222595A JPH0222595A JP63172319A JP17231988A JPH0222595A JP H0222595 A JPH0222595 A JP H0222595A JP 63172319 A JP63172319 A JP 63172319A JP 17231988 A JP17231988 A JP 17231988A JP H0222595 A JPH0222595 A JP H0222595A
- Authority
- JP
- Japan
- Prior art keywords
- spine
- control rod
- wire rope
- reactor
- elements
- 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.)
- Pending
Links
- 230000003139 buffering effect Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 8
- 239000006096 absorbing agent Substances 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 241000239290 Araneae Species 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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
Landscapes
- Supports For Pipes And Cables (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、ヘリウムガス等を冷却材とする原子炉に用い
られる高温ガス炉用制御棒に関する。Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to a control rod for a high-temperature gas reactor used in a nuclear reactor using helium gas or the like as a coolant.
（従来の技術）
一般にこの種のガス冷却型原子炉は、第３図に示すよう
に複数個の制御棒要素１・・・を軸線方向に連結したス
パイン２を連結金具３を介してワイヤロープ４で吊持し
、このワイヤロープ４で制御棒要素１・・・を制御棒案
内管５を介して炉心６の制御棒挿入孔７内へ昇降させて
炉心６の核反応度を制御している。(Prior Art) In general, this type of gas-cooled nuclear reactor is constructed by connecting a spine 2, which connects a plurality of control rod elements 1 in the axial direction, to a wire rope via a connecting fitting 3, as shown in FIG. 4, and the control rod elements 1 are lifted and lowered by the wire ropes 4 into the control rod insertion holes 7 of the reactor core 6 through the control rod guide tubes 5 to control the nuclear reactivity of the reactor core 6. There is.
上記制御棒要素１・・・は、第４図に示すように二重円
筒状をなす被覆管８内に中性子吸収体９を収容して構成
されており、被覆管８の内側に設けられたスパイダー１
０を介して前記スパイン２に固定されている。また、ス
パイン２には制御棒要素１の浮き上りを防止する浮き上
り防止板１１および制御棒要素１の横揺れを防止するガ
イドリング１２が取付けられている。The control rod elements 1 are constructed by housing a neutron absorber 9 in a double cylindrical cladding tube 8, as shown in FIG. spider 1
0 to the spine 2. Further, an uplift prevention plate 11 for preventing the control rod element 1 from floating up and a guide ring 12 for preventing the control rod element 1 from rolling are attached to the spine 2 .
一方、前記ワイヤロープ４は、第３図に示すように図示
しない原子炉容器の上方に回転可能に設けられたドラム
１３の外周に巻回されている。このドラム１３は駆動モ
ータ１４により歯車機構１５を介して駆動され、これに
よりワイヤロープ４の巻き取り及び繰り出しがなされる
ようになっている。なお、図中１６は上部支持板、１７
はスパイン２の下端に取付けられたショックアブソーバ
である。On the other hand, as shown in FIG. 3, the wire rope 4 is wound around the outer periphery of a drum 13 that is rotatably provided above the reactor vessel (not shown). This drum 13 is driven by a drive motor 14 via a gear mechanism 15, whereby the wire rope 4 is wound up and let out. In addition, 16 in the figure is an upper support plate, 17
is a shock absorber attached to the lower end of the spine 2.
ところで、このような制御棒は制御棒自身に可撓性が付
与されているため、制御棒案内管５の曲りや制御棒挿入
孔７のミスアライメントに対して挿入自由度が大きいと
いう利点があるが、原子炉を緊急停止させる場合にはド
ラム１３からワイヤロー１４を繰り出して制御棒要素１
・・・を自重によって炉心６内へ落下させ、制御棒要素
１・・・が所定位置に達したところでワイヤロープ４の
繰り出しを停止して原子炉を緊急停止させている。この
ため、制御棒要素１・・・の落下が停止したときにワイ
ヤロープ４やスパイン２等に衝撃力が加わり、制御棒の
健全性が損われる可能性があった。By the way, such a control rod has flexibility in itself, so it has the advantage of having a large degree of freedom in insertion against bending of the control rod guide tube 5 or misalignment of the control rod insertion hole 7. However, in case of emergency shutdown of the reactor, the wire row 14 is paid out from the drum 13 and the control rod element 1 is
... are caused to fall into the reactor core 6 by their own weight, and when the control rod elements 1 ... reach a predetermined position, the wire ropes 4 are stopped from being fed out, and the reactor is brought to an emergency shutdown. Therefore, when the control rod elements 1 stop falling, an impact force is applied to the wire rope 4, the spine 2, etc., and there is a possibility that the integrity of the control rods may be impaired.
（発明が解決しようとする課題）
上述のように、従来では原子炉を緊急停止トさせるため
に制御棒要素を炉心内へ落下させた際、ワイヤロープや
スパイン等に衝撃力が加わるという問題があった。(Problems to be Solved by the Invention) As mentioned above, in the past, when control rod elements were dropped into the reactor core in order to make an emergency shutdown of a nuclear reactor, there was a problem in that impact force was applied to wire ropes, spines, etc. there were.
本発明は、このような問題点に鑑みてなされたもので、
原子炉の緊急停止時にワイヤロープおよびスパイン等に
作用する衝撃力を低減できる高温ガス炉用制御棒を提供
することを目的とするものである。The present invention was made in view of these problems, and
The object of the present invention is to provide a control rod for a high-temperature gas reactor that can reduce the impact force acting on wire ropes, spines, etc. during emergency shutdown of a nuclear reactor.
［発明の構成コ
（課題を解決するための手段）
上記目的を達成するために本発明は、！夏数個の１；！
ｌ ？ＭＪ棒要素をその中心部を貫通するスパインで軸
線方向に連結し、上記スパインの上端をワイヤロープで
吊持してなる高温ガス炉用制御棒において、前記ワイヤ
ロープとスパインとの間に緩衡機構を設けたことを特徴
とする。[Configuration of the Invention (Means for Solving the Problems) To achieve the above object, the present invention has the following features! Summer several 1;!
l? In a control rod for a high temperature gas reactor, in which MJ rod elements are connected in the axial direction by a spine passing through the center thereof, and the upper end of the spine is suspended by a wire rope, there is a buffer between the wire rope and the spine. It is characterized by the provision of a mechanism.
（作 用）
本発明では、ワイヤロープとスパインとの間に緩衡機構
を設けることにより、原子炉の緊急停止時にワイヤロー
プおよびスパイン等に作用する衝撃力を緩衡機構によっ
て弱めることができる。(Function) In the present invention, by providing a buffer mechanism between the wire rope and the spine, the shock force acting on the wire rope, spine, etc. during an emergency shutdown of a nuclear reactor can be weakened by the buffer mechanism.
（実施例）
以下、本発明の実施例を第１図および第２図を参照して
説明する。なお、第３図および第４図と同一部分には同
一符号を付して説明する。(Example) Hereinafter, an example of the present invention will be described with reference to FIGS. 1 and 2. Note that the same parts as in FIGS. 3 and 4 will be described with the same reference numerals.
第１図は本発明の第１実施例を示し、この高温ガス炉用
制御棒は、複数個の制御棒要素１・・・をその中心部を
貫通するスパイン２で軸線方向に連結し、上記スパイン
２の上端を連結金具３およびスプリング１８を介してワ
イヤロープ４で吊持した構成となっている。上記制御棒
要素１・・・は、二重円筒状をなす被覆管８内に中性子
吸収体９を収容して構成されており、被覆管８の内側に
設けられたスパイダー１０を介して前記スパイン２に固
定されている。また、スパイン２には制御棒要素１の浮
き上りを防止するメグき上り防止板１１および制御棒要
素１の溝揺れを防止するガイドリング１２が取付けられ
ている。FIG. 1 shows a first embodiment of the present invention, and this control rod for a high-temperature gas reactor has a plurality of control rod elements 1 connected in the axial direction by a spine 2 penetrating through the center thereof. The upper end of the spine 2 is suspended by a wire rope 4 via a connecting fitting 3 and a spring 18. The control rod elements 1 are constructed by accommodating a neutron absorber 9 in a double cylindrical cladding tube 8, and the spine It is fixed at 2. Further, the spine 2 is attached with a meg lift prevention plate 11 that prevents the control rod element 1 from lifting up, and a guide ring 12 that prevents the control rod element 1 from swinging in the groove.
上記のような構成において、原子炉を緊急停止させる場
合は図示しないドラムからワイヤロープ４を繰り出して
制御棒要素１・・・を炉心内へ落下させ、制御棒要素１
・・・が所定位置に達したところでワイヤロープ４の繰
り出しを停止する。このとき、ワイヤロープ４およびス
パイン２等には約５ｇ程度の衝撃力が加わるが、ワイヤ
ロープ４とスパイン２との間にはスプリング１８が設け
られているため、このスプリング１８によってワイヤロ
ープ４およびスパイン２等に作用する衝撃力を弱めるこ
とができる。In the above configuration, when the reactor is to be stopped urgently, the wire rope 4 is let out from a drum (not shown) to drop the control rod elements 1 into the reactor core, and the control rod elements 1 are
... stops feeding out the wire rope 4 when it reaches a predetermined position. At this time, an impact force of approximately 5 g is applied to the wire rope 4 and the spine 2, but since a spring 18 is provided between the wire rope 4 and the spine 2, this spring 18 acts on the wire rope 4 and the spine 2. The impact force acting on the spine 2 etc. can be weakened.
このように、ワイヤロープ４とスパイン２との間にスプ
リング］８を設けることにより、原子炉の緊急停止時に
ワイヤロープ４およびスパイン２等に作用する衝撃力を
スプリング１８によって低減できるため、制御棒の健全
性を維持てきると共に原子炉の安全性を向上させること
ができる。In this way, by providing the spring 8 between the wire rope 4 and the spine 2, the spring 18 can reduce the impact force that acts on the wire rope 4, spine 2, etc. during an emergency shutdown of the reactor. It is possible to maintain the integrity of the reactor and improve the safety of the reactor.
なお、本発明は上記実施例に限定されるものではない。Note that the present invention is not limited to the above embodiments.
たとえば、上記実施例ではワイヤロープ４とスパイン２
との間にスプリング１８を設けたが、第２図に示すよう
にワイヤロープ４とスパイン２との間にベローズ１つを
設け、このベローズ１９のダンパ作用によってワイヤロ
ープ４およびスパイン２等に作用する衝撃力を弱めるよ
うにしてもよい。For example, in the above embodiment, the wire rope 4 and the spine 2
However, as shown in FIG. 2, one bellows is provided between the wire rope 4 and the spine 2, and the damper action of this bellows 19 acts on the wire rope 4, the spine 2, etc. The impact force applied may be weakened.
［発明の効果］
以上説明したように本発明は、ワイヤロープとスパイン
との間にスプリング、ベローズ等の緩衡機構を設けたの
で、原子炉の緊急停止時にワイヤロープおよびスパイン
等に作用する衝撃力・を低減でき、制御棒の健全性を維
持できると共に原子炉の安全性を向上させることができ
る。[Effects of the Invention] As explained above, the present invention provides a buffering mechanism such as a spring or bellows between the wire rope and the spine, so that the impact acting on the wire rope, spine, etc. during an emergency shutdown of a nuclear reactor is reduced. It is possible to reduce the amount of force required, maintain the integrity of the control rods, and improve the safety of the reactor.
第１図は本発明の第１実施例を示す高温ガス炉用制御棒
の縦断面図、第２図は本発明の第２実施例を示す高温ガ
ス炉用制御棒の縦断面図、第３図は従来の高温ガス炉用
制御棒とその駆動機構を示す図、第４図はその一部を示
す縦断面図である。
１・・・制御棒要素、２・・・スパイン、３・・・連結
金具、４・・・ワイヤロープ、５・・・制御棒案内管、
６・・・炉心、７・・・制御棒挿入孔、８・・・被覆管
、９・・・中性子吸収体、１０・・・スパイダー １１
・・・浮き上り防止板、１２・・・ガイドリング、１３
・・・ドラム、１４・・・駆動モータ、１５・・・ギヤ
機構、１８・・・スプリング、１９・・・ベローズ。
出願人代理人 弁理士 鈴江武彦
ｌＥ２図
ｔＪ３図
第４図FIG. 1 is a longitudinal cross-sectional view of a control rod for a high-temperature gas reactor showing a first embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view of a control rod for a high-temperature gas reactor showing a second embodiment of the present invention, and FIG. The figure shows a conventional high-temperature gas reactor control rod and its drive mechanism, and FIG. 4 is a longitudinal cross-sectional view of a part thereof. DESCRIPTION OF SYMBOLS 1... Control rod element, 2... Spine, 3... Connecting fitting, 4... Wire rope, 5... Control rod guide tube,
6... Core, 7... Control rod insertion hole, 8... Cladding tube, 9... Neutron absorber, 10... Spider 11
... Lifting prevention plate, 12 ... Guide ring, 13
... Drum, 14... Drive motor, 15... Gear mechanism, 18... Spring, 19... Bellows. Applicant's representative Patent attorney Takehiko Suzue Figure 4
Claims (1)
軸線方向に連結し、上記スパインの上端をワイヤロープ
で吊持してなる高温ガス炉用制御棒において、前記ワイ
ヤロープとスパインとの間に緩衡機構を設けたことを特
徴とする高温ガス炉用制御棒。In a control rod for a high-temperature gas reactor, in which a plurality of control rod elements are connected in the axial direction by a spine passing through the center thereof, and the upper end of the spine is suspended by a wire rope, there is provided a control rod between the wire rope and the spine. A control rod for a high-temperature gas reactor, characterized in that a buffering mechanism is provided in the control rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63172319A JPH0222595A (en) | 1988-07-11 | 1988-07-11 | Control rod for high temperature gas furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63172319A JPH0222595A (en) | 1988-07-11 | 1988-07-11 | Control rod for high temperature gas furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0222595A true JPH0222595A (en) | 1990-01-25 |
Family
ID=15939708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63172319A Pending JPH0222595A (en) | 1988-07-11 | 1988-07-11 | Control rod for high temperature gas furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0222595A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016529521A (en) * | 2013-09-03 | 2016-09-23 | チングア ユニバーシティー | Reactive control method and telescope type control rod of pebble bed high temperature gas cooling furnace |
-
1988
- 1988-07-11 JP JP63172319A patent/JPH0222595A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016529521A (en) * | 2013-09-03 | 2016-09-23 | チングア ユニバーシティー | Reactive control method and telescope type control rod of pebble bed high temperature gas cooling furnace |
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