JPS5821195A - Control rod drive mechanism for reactor - Google Patents
Control rod drive mechanism for reactorInfo
- Publication number
- JPS5821195A JPS5821195A JP56117724A JP11772481A JPS5821195A JP S5821195 A JPS5821195 A JP S5821195A JP 56117724 A JP56117724 A JP 56117724A JP 11772481 A JP11772481 A JP 11772481A JP S5821195 A JPS5821195 A JP S5821195A
- Authority
- JP
- Japan
- Prior art keywords
- control rod
- drive mechanism
- piston
- collet
- rod drive
- 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
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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は原子炉制御棒駆動機構に係り、特に、ｉ！１１
）騰水型原子炉の水圧式制御棒駆動機構に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a nuclear reactor control rod drive mechanism, and more particularly, to an i! 11
) Concerning the hydraulic control rod drive mechanism of a rising water reactor.
従来の水圧式制御棒駆動機構は制御棒引抜側圧力水穴が
引抜駆動空間とコレットピストン作動空間が連通されて
いるためストップピストンのシールが破損、あるいは異
常摩耗等により摺減っだ時にはシール部よりの漏水量が
犬となり、コレットピストンの作動圧確保が不可能とな
りコレットピストンが作動せず、コレットピストンに設
けられたコレットフィンガが開かず、制御棒、駆動機構
の引抜作動が出来なくなる欠点があった。In conventional hydraulic control rod drive mechanisms, the pressure water hole on the control rod extraction side communicates with the extraction drive space and the collet piston operating space, so if the stop piston seal is damaged or worn down due to abnormal wear, the pressure water hole on the control rod extraction side communicates with the collet piston operation space. The problem is that the amount of water leaking becomes large, making it impossible to secure the operating pressure of the collet piston, causing the collet piston to not operate, and the collet fingers provided on the collet piston to not open, making it impossible to pull out the control rod and drive mechanism. Ta.
本発明は、ストップピストンシールが破損、するいは摺
減ってシール部よりの漏水量が犬となっても、コレット
ピストンの作動水圧が確保できる制御棒１′枢動機構を
提供することにある。An object of the present invention is to provide a control rod 1' pivoting mechanism that can ensure the operating water pressure of the collet piston even if the stop piston seal is damaged or worn out and the amount of water leaking from the seal becomes large. .
本発明は、制御棒駆動機構の連通されている、引抜１駆
動圧空間側に挿入自在に進退可能なシール用ロンドを設
けることにより、コレットピストン作動空間のみに圧力
水を供給しコレットピストンの不動作を防止することに
ある。The present invention supplies pressurized water only to the collet piston operating space by providing a sealing rod that can be freely inserted and moved back and forth on the extraction 1 drive pressure space side that communicates with the control rod drive mechanism. The purpose is to prevent movement.
以下、本発明の実施例を図によって説明する。Embodiments of the present invention will be described below with reference to the drawings.
第１図は制御棒１が任意位置に保持された状態を示す、
制御棒１はスパッドカップリング２を介してインデック
スチューブ３に連結される、インデックスチューブ３は
アウターチューブ４に着座したコレットピストン５と一
体構造となっているコレットフィンガー６にインデック
スチューブ３のノツチ部７が乗ることによりセットされ
る。FIG. 1 shows a state in which the control rod 1 is held at an arbitrary position.
The control rod 1 is connected to an index tube 3 via a spud coupling 2. The index tube 3 has a collet finger 6 integrally constructed with a collet piston 5 seated on an outer tube 4, and a notch 7 of the index tube 3. It is set by riding.
第２図は制御棒駆動機構１ａの引抜作動前状態を示し、
水路８ｆ：通った圧力水がインデックスチューブ３を押
し上げ、インデックスチューブ３のノツチ部７より円筒
部９にコレットフィンガー６が位置される。FIG. 2 shows the state before the withdrawal operation of the control rod drive mechanism 1a,
Water channel 8f: The pressure water passing through pushes up the index tube 3, and the collet finger 6 is positioned in the cylindrical portion 9 from the notch portion 7 of the index tube 3.
第３図は開側１棒駆動機構１ａの引抜作動状態を示す、
引抜作動は水路１０よシ圧力水が供給され、圧力水は空
間１１全通シインナーシール１２とストップピストン１
３にて形成される空間１４に流れ込みインデックスチュ
ーブ３を引抜１’ｌ１１に押し下げる、と同時に圧力水
が流路１５を通りコレットピストン５の下部に加わるこ
とにより、コレットピストン５、コレットフィンガー６
全押し上げる押し上げられたコレットフィンガー６の先
端１５はガイドキャップ１６のテーパ部１７にそって押
し開かれる。前記動作によりインデックスチューブ３の
ノツチ部７はコレットフィンガー６に干渉することなく
インデックスチューブ３は自由に引抜かれる。FIG. 3 shows the pulling operation state of the open side one-rod drive mechanism 1a.
For the drawing operation, pressure water is supplied from the waterway 10, and the pressure water is supplied to the space 11, the inner seal 12, and the stop piston 1.
3 flows into the space 14 formed by the index tube 3 and pushes the index tube 3 down to the drawing position 1'l11, and at the same time pressurized water passes through the flow path 15 and is applied to the lower part of the collet piston 5, so that the collet piston 5 and the collet finger 6 are
The tip 15 of the collet finger 6 that is pushed up completely is pushed open along the tapered portion 17 of the guide cap 16. By the above operation, the index tube 3 is freely pulled out without the notch portion 7 of the index tube 3 interfering with the collet finger 6.
しかしながら空間１１と流路１５は連通されているため
、ストップピストンシール１３が破損、あるいは異常摩
耗した場合には、空間１４より圧力水が空間１８に漏洩
流出する。However, since the space 11 and the flow path 15 are in communication with each other, if the stop piston seal 13 is damaged or abnormally worn, pressure water leaks from the space 14 into the space 18 .
圧力水が漏洩流出するとインデックスチューブ３および
コレットピストン５の駆動圧確保が不可能となり、引抜
作動不可となる可能性大である。If the pressure water leaks out, it will be impossible to secure the driving pressure for the index tube 3 and the collet piston 5, and there is a high possibility that the extraction operation will not be possible.
以下、この発明の詳、１ａについて説明する。The details of this invention, 1a, will be explained below.
第４図は制御棒駆動機構１ａの組み込み状態を示す。FIG. 4 shows the installed state of the control rod drive mechanism 1a.
制御棒駆動機構１ａの構造は第１図に示した従来のもの
と同じである。The structure of the control rod drive mechanism 1a is the same as the conventional one shown in FIG.
制ｉｌｌ ’ＩＩ駆動機構１ａのフランジ部１９にはネ
ジ２０、穴２１が設けられており、シール２２゜２３お
よびネジ部を有するロッド２４が挿入される。The flange portion 19 of the control ill' II drive mechanism 1a is provided with a screw 20 and a hole 21, into which a seal 22, 23 and a rod 24 having a threaded portion are inserted.
ストップピストンシール１３が正常に機能している場合
には圧力水は水路１０より空間１１、流路１５に供給さ
ｎインデックスチューブ３の引抜駆動が可能である。When the stop piston seal 13 is functioning normally, pressure water is supplied from the water channel 10 to the space 11 and the flow path 15, and the n-index tube 3 can be pulled out and driven.
圧力水がストップピストンシール１３部より漏洩流出大
となり引抜駆動圧確保が無尽となった場合には、原子炉
停止時に第５図に示す如くロッド２４を回転挿入し、水
路１０より空間１１に流れる圧力水をシール２２により
仕切る、圧力水は流路１５を通りコレットピストン５、
コレットフィンガー６を押し上げ、コレットフィンガー
６の先端１５がガイドキャップ１６のテーパ部１７にそ
って強性的に押し開く。When the pressure water leaks out from the stop piston seal 13 in a large amount and the extraction drive pressure becomes inexhaustible, the rod 24 is rotated and inserted as shown in FIG. The pressure water is partitioned by a seal 22, and the pressure water passes through a flow path 15 to a collet piston 5,
The collet finger 6 is pushed up, and the tip 15 of the collet finger 6 is forcefully pushed open along the tapered portion 17 of the guide cap 16.
前記動作によりインデックスチューブ３のノツチ部７よ
りコレットフィンガー６の先端が外れ、制御棒１と連結
したインデックスチューブ３が自由落下により引抜かれ
る。By the above operation, the tip of the collet finger 6 comes off from the notch part 7 of the index tube 3, and the index tube 3 connected to the control rod 1 is pulled out by free fall.
第６図は本発明の他の実施例を示すものである。FIG. 6 shows another embodiment of the invention.
ピストンチューブ２５の頭部２６に穴２７を塞ぐことが
可能なピッチのシール２８．２９を設ける。The head 26 of the piston tube 25 is provided with a pitched seal 28, 29 capable of closing the hole 27.
流路１５側のみ圧力水供給時にはピストンチューブナツ
ト３０を取外しピストンチューブプ２５、頭部２６を押
し上げ穴２７をシール２８．２９により塞ぐ、本発明に
よれば前記発明より構造が簡単になり原価低減がはかれ
るが、ピストンチューブ２５を押し上げねばならず、作
業性が若干容易でない。When pressurized water is supplied only to the flow path 15 side, the piston tube nut 30 is removed, the piston tube 25 and the head 26 are pushed up, and the holes 27 are closed with seals 28 and 29.According to the present invention, the structure is simpler than the previous invention, and the cost is reduced. However, the piston tube 25 must be pushed up, making the work somewhat difficult.
本発明によればストップピストンシールより駆動圧力水
が異常に漏洩しても、原子炉停止時には制御棒駆動機構
の引抜作動が可能となる。制御棒駆動機構が、制御棒全
挿入位置で引抜不可能となった場合には、制御棒駆動機
構が７・ウジングよシ取外し不可能となり大きな問題と
なるが、本発明によれはコレットピストンの駆動圧が単
独にて確保出来る効果がある。According to the present invention, even if drive pressure water abnormally leaks from the stop piston seal, the control rod drive mechanism can be pulled out when the reactor is shut down. If the control rod drive mechanism cannot be pulled out when the control rod is fully inserted, it becomes impossible to remove the control rod drive mechanism from the housing 7, which poses a major problem. However, according to the present invention, the collet piston This has the effect of ensuring the driving pressure independently.
【図面の簡単な説明】
第１図は制御棒駆動機構の全体を示す、第２図は制御棒
駆動機構の引抜作動前状態を示す、第３図は制御棒駆動
機構の引抜動作を示す、第４図は本発明のコレットピス
トン駆動圧確保機構の作動前状態を示す、第５図は本発
明のコレットピストン駆動圧確保機構の作動状態を示す
、第６図は応用変形例を示し作動前を示す、第７図は応
用変形例を示し作動図を示す。
１・・・制御棒、１ａ・・・制御棒駆動機構、２２．２
３・・・シール、２４・・・ロッド、２８，２９・・・
シール。−第 Ｚ 閃
ｉ柵昭５８−２ｉ１９５ （４）
茅３閑
茅／１図
茅 ５図
穿ろ目
穿 ゴ図[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 shows the entire control rod drive mechanism, Fig. 2 shows the state before the control rod drive mechanism is pulled out, and Fig. 3 shows the control rod drive mechanism in its drawing operation. FIG. 4 shows the collet piston drive pressure ensuring mechanism of the present invention in its operating state, FIG. 5 shows the collet piston drive pressure ensuring mechanism of the present invention in its operating state, and FIG. 6 shows an applied modification example before its operation. FIG. 7 shows an applied modification and shows an operation diagram. 1... Control rod, 1a... Control rod drive mechanism, 22.2
3... Seal, 24... Rod, 28, 29...
sticker. -Z.
Claims (1)
力水穴に挿入自在に進退可能なシール用ロッド全設ける
ことにより、制御棒駆動機構内のコレットピストンの単
独作動を可能とすることを特徴とする制御棒、駆動機構
。 ２、前記匍］御棹駆動機のピストンチューブ頭部にシー
ルを設け、ピストンチューブ頭部を移動させることによ
り、コレットピストンの単独作動を特徴とする特許請求
の範囲第１項記載の制御棒駆動機構。[Scope of Claims] (1) In the hydraulically driven control rod 1 drive mechanism, the collet piston in the control rod drive mechanism can be operated independently by providing all the sealing rods that can be freely inserted into the pressure water hole on the extraction side and moved back and forth. A control rod and drive mechanism characterized by enabling. 2. Control rod drive according to claim 1, characterized in that the collet piston is operated independently by providing a seal at the head of the piston tube of the rod drive machine and moving the head of the piston tube. mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56117724A JPS5821195A (en) | 1981-07-29 | 1981-07-29 | Control rod drive mechanism for reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56117724A JPS5821195A (en) | 1981-07-29 | 1981-07-29 | Control rod drive mechanism for reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5821195A true JPS5821195A (en) | 1983-02-07 |
Family
ID=14718712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56117724A Pending JPS5821195A (en) | 1981-07-29 | 1981-07-29 | Control rod drive mechanism for reactor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5821195A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04169790A (en) * | 1990-10-31 | 1992-06-17 | Tokyo Gas Co Ltd | Open rack type vaporizer |
-
1981
- 1981-07-29 JP JP56117724A patent/JPS5821195A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04169790A (en) * | 1990-10-31 | 1992-06-17 | Tokyo Gas Co Ltd | Open rack type vaporizer |
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