JPH11133179A - Intra-furnace instrumentation tube detaching device - Google Patents
Intra-furnace instrumentation tube detaching deviceInfo
- Publication number
- JPH11133179A JPH11133179A JP9298099A JP29809997A JPH11133179A JP H11133179 A JPH11133179 A JP H11133179A JP 9298099 A JP9298099 A JP 9298099A JP 29809997 A JP29809997 A JP 29809997A JP H11133179 A JPH11133179 A JP H11133179A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- tube
- pair
- frames
- instrumentation tube
- 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
Landscapes
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明の沸騰水型原子力発電
プラントの原子炉圧力容器の炉心内に設置されている炉
内計装管を取外すために使用する炉内計装管取外し装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-core instrumentation tube removing apparatus used for removing an in-core instrumentation tube installed in a core of a reactor pressure vessel of a boiling water nuclear power plant.
【０００２】[0002]
【従来の技術】原子炉の安全性監視、燃料の健全性維持
およびその効率的燃焼を達成するために、炉心内には中
性子源領域モニタ（ＳＲＭ）、中間領域モニタ（ＩＲ
Ｍ）および局部領域出力モニタ（ＬＰＲＭ）といった中
性子計装系の検出器を炉内計装管に納めた形で分散配置
し、炉心各部の出力分布を監視している。2. Description of the Related Art A neutron source region monitor (SRM) and an intermediate region monitor (IR) are provided in a reactor core in order to monitor the safety of a nuclear reactor, maintain fuel integrity, and achieve efficient combustion.
M) and a neutron instrumentation system detector such as a local area power monitor (LPRM) are distributed and arranged in an in-core instrumentation tube to monitor the power distribution of each part of the core.
【０００３】炉内計装管は中性子検出器の寿命、炉内計
装管自体の照射寿命を考慮し、定期検査の際に順次計画
的に交換する。ＳＲＭ，ＩＲＭ，ＬＰＲＭ検出器の交換
は炉内計装管ごとに行うが、従来は炉内計装管交換用の
各種交換装置を使用して交換作業を行い、この装置によ
って大幅な定期点検工程の短縮と作業員の放射線被曝低
減を図っている。[0003] The instrumentation tubes in the furnace are sequentially and systematically replaced at the time of periodic inspection in consideration of the life of the neutron detector and the irradiation life of the instrumentation tubes themselves. The SRM, IRM, and LPRM detectors are replaced for each in-furnace instrumentation pipe. Conventionally, replacement work is performed using various replacement devices for in-furnace instrumentation pipe replacement. To reduce radiation exposure of workers.
【０００４】炉内計装管を炉内の上部格子板から取外す
場合には炉内計装管取外し装置を使用して炉内計装管を
引抜き、移動用つかみ具で移動し、機器貯蔵プールに仮
置する。一方、新しい炉内計装管を取付ける場合には挿
入用計装管取扱装置を使用して炉上部からの炉内計装管
の装荷を行う。In order to remove the in-furnace instrumentation tube from the upper lattice plate in the furnace, the in-furnace instrumentation tube is pulled out by using the in-furnace instrumentation tube removal device, and is moved by a moving grip, and the equipment storage pool is removed. Temporarily. On the other hand, when installing a new instrumentation tube in the furnace, the instrumentation tube handling device for insertion is used to load the instrumentation tube in the furnace from the upper part of the furnace.
【０００５】手順としてはインコア挿入ガイドを原子炉
圧力容器内（以下、炉内と記す）に設置し、天井クレー
ンから吊り下げられたストロングバックで新炉内計装管
を搬入し、挿入ガイドを介して挿入用計装管取扱装置で
新炉内計装管を装荷する。[0005] As a procedure, an in-core insertion guide is installed in a reactor pressure vessel (hereinafter, referred to as a reactor), an instrumentation pipe in a new reactor is carried in by a strong back suspended from an overhead crane, and an insertion guide is inserted. Load the instrumentation pipe in the new furnace with the instrumentation pipe handling device for insertion.
【０００６】炉内計装管取外し装置は炉内計装管を炉内
の上部格子板から取外すのに原子炉上方のオペレーショ
ンフロアを走行する燃料自動交換機と天井クレーンによ
り遠隔操作で容易に装着でき、炉内計装管のプランジャ
部を確実に保持し、取外し作業ができるようになってい
る。[0006] The in-core instrument tube removing device can be easily mounted remotely by an automatic refueling machine running on the operation floor above the reactor and an overhead crane to remove the in-core instrument tube from the upper lattice plate in the reactor. The plunger portion of the in-furnace instrumentation tube is securely held and can be removed.
【０００７】従来の炉内計装管取外し装置は、図５に示
したように構成されている。すなわち、上方に操作ポー
ル１を取着する上部固定板２と、この上部固定板２の下
部に取着された一対のフレーム３と、この一対のフレー
ム３に設けられたエアシリンダ４と、このエアシリンダ
４のピストン５にクランク６を介して取着されたスライ
ド板７と、このスライド板７の先端部に取着され炉内計
装管８を把持するフォーク部９と、前記スライド板７の
下部に設けられた下部固定板10と、前記一対のフレーム
３の下端部を固定する逆三角形状固定部材11とを具備し
ている。[0007] A conventional furnace instrument tube removing device is configured as shown in FIG. That is, an upper fixed plate 2 on which the operation pole 1 is mounted, a pair of frames 3 mounted on a lower portion of the upper fixed plate 2, an air cylinder 4 provided on the pair of frames 3, A slide plate 7 attached to a piston 5 of an air cylinder 4 via a crank 6, a fork portion 9 attached to a tip end of the slide plate 7 and holding a furnace instrumentation tube 8, And a lower fixing plate 10 provided at a lower portion of the frame 3 and an inverted triangular fixing member 11 for fixing lower end portions of the pair of frames 3.
【０００８】なお、図５中符号12は操作ポール取付座、
13は上部格子板14を挟んで炉内計装管取外し装置を固定
するための挟み棒、15はエアシリンダ４等を駆動する電
力供給用信号ケーブルである。操作ポール１はオペレー
ションフロア上から燃料自動交換機により吊り下げ，吊
り上げが行われる。Reference numeral 12 in FIG. 5 denotes an operation pole mounting seat,
Reference numeral 13 denotes a pin bar for fixing the furnace instrument tube removing device with the upper lattice plate 14 interposed therebetween, and reference numeral 15 denotes a power supply signal cable for driving the air cylinder 4 and the like. The operation pole 1 is suspended and lifted from the operation floor by an automatic fuel exchanger.
【０００９】[0009]
【発明が解決しようとする課題】炉内計装管８の取外し
作業において、炉内計装管８が固着した場合、前記炉内
計装管取外し装置に約30Kgの重しを加えて再取外しを行
うが、この場合でも固着が解除できないことがあり、ス
ティックカッタを使用して炉内計装管８を切断してい
る。When the in-furnace instrumentation tube 8 is stuck in the removal operation of the in-furnace instrumentation tube 8, a weight of about 30 Kg is added to the in-furnace instrumentation tube removing device to remove it again. However, even in this case, the sticking may not be released, and the in-core instrumentation tube 8 is cut using a stick cutter.
【００１０】しかしながら、スティックカッタによる切
断作業は準備に時間を要し、かつ炉内での作業自体も難
易度の高い作業であり、重しを加え再作業しても解除で
きないなどの課題がある。However, the cutting operation using the stick cutter requires a long time for preparation, and the operation itself in the furnace is a highly difficult operation. .
【００１１】また、炉内計装管８の上部は内側管８ａと
外側管８ｂの二重管からなっており、内側管８ａは外側
管８ｂ内部のばね（図示せず）により支持され、外力に
より伸縮する構造になっている。The upper part of the in-furnace instrumentation tube 8 is composed of a double tube consisting of an inner tube 8a and an outer tube 8b. The inner tube 8a is supported by a spring (not shown) inside the outer tube 8b, and an external force is applied. The structure expands and contracts.
【００１２】内側管８ａの先端部にはブッシュ８ｃが設
けられており、フォーク部９でブッシュ８をつかみ炉内
計装管取外し装置の重みが内側管８ａに作用し縮むこと
により、上部格子板14から炉内計装管８を取外しできる
ようになっている。A bush 8c is provided at the distal end of the inner tube 8a. The bush 8 is gripped by the fork 9, and the weight of the in-furnace instrument tube removing device acts on the inner tube 8a to reduce the size of the upper grid plate. The in-furnace instrumentation tube 8 can be removed from 14.
【００１３】しかしながら、内側管８ａと外側管８ｂの
隙間にスラッジや水垢が付着して内側管８ａと外側管８
ｂが固着し、これらを伸縮することができないので、上
部格子板14から炉内計装管８を取外すことができない課
題がある。However, sludge or scale adheres to the gap between the inner pipe 8a and the outer pipe 8b, and
Since b is fixed and cannot be expanded or contracted, there is a problem that the in-furnace instrumentation tube 8 cannot be removed from the upper lattice plate 14.
【００１４】本発明は上記課題を解決するためになされ
たもので、炉内計装管８の内側管８ａと外側管８ｂとの
隙間に堆積しているスラッジや水垢を破砕ないしは分
解，除去して内側管８ａと外側管８ｂとの固着を解除
し、炉内計装管の切断作業を行う必要がなく、作業工数
削減とともに炉水の清浄度向上にも寄与し、もって、炉
内計装管を上部格子板から容易に取外すことができる作
業性のすぐれた炉内計装管取外し装置を提供することに
ある。The present invention has been made to solve the above-mentioned problem, and crushes, decomposes, and removes sludge and water scale deposited in a gap between an inner tube 8a and an outer tube 8b of a furnace instrumentation tube 8. This eliminates the need for cutting the inner tube 8a and the outer tube 8b and cutting the instrumentation tube inside the furnace, thereby reducing the number of man-hours and improving the cleanliness of the furnace water. It is an object of the present invention to provide an in-furnace instrumentation tube removing apparatus with excellent workability in which a tube can be easily removed from an upper lattice plate.
【００１５】[0015]
【課題を解決するための手段】請求項１に係る発明は、
上方に操作ポールを取着する上部固定板と、この上部固
定板の下部に取着された一対のフレームと、この一対の
フレーム内に設けられたエアシリンダと、このエアシリ
ンダのピストンにクランクを介して取着されたスライド
板と、このスライド板に取着され炉内計装管を把持する
フォーク部と、前記スライド板の下部に設けられた下部
固定板とを具備した炉内計装管取外し装置において、前
記一対のフレームに振動発生装置を設置してなることを
特徴とする。The invention according to claim 1 is
An upper fixing plate to which an operation pole is attached above, a pair of frames attached to a lower portion of the upper fixing plate, an air cylinder provided in the pair of frames, and a crank for a piston of the air cylinder. An in-furnace instrument tube comprising: a slide plate attached via a vial; a fork attached to the slide plate to hold the in-furnace instrumentation tube; and a lower fixed plate provided below the slide plate. The removal device is characterized in that a vibration generator is installed on the pair of frames.
【００１６】請求項２に係る発明は、前記振動発生装置
は複数の超音波発信器からなり、この複数の超音波発信
装置は少なくとも前記一つのフレームおよび前記炉内計
装管に取着してなることを特徴とする。According to a second aspect of the present invention, the vibration generator includes a plurality of ultrasonic transmitters, and the plurality of ultrasonic transmitters are attached to at least the one frame and the in-furnace instrumentation tube. It is characterized by becoming.
【００１７】請求項３に係る発明は、前記振動発生装置
は高圧水発生装置またはアイスブラスト発生装置からな
り、前記下部固定板の下方で前記一対のフレームの下端
部にノズルを設け、このノズルにノズルホースの一端を
接続し、前記ノズルホースの他端を前記高圧水発生装置
またはアイスブラスト発生装置に接続してなることを特
徴とする。According to a third aspect of the present invention, the vibration generator includes a high-pressure water generator or an ice blast generator, and a nozzle is provided at a lower end portion of the pair of frames below the lower fixing plate. One end of a nozzle hose is connected, and the other end of the nozzle hose is connected to the high-pressure water generator or the ice blast generator.
【００１８】請求項４に係る発明は、前記一対の操作ポ
ール取付座内にモータを取着し、このモータに減速機を
取着し、この減速機の回転軸を前記エアシリンダのピス
トンに接続してなることを特徴とする。According to a fourth aspect of the present invention, a motor is mounted in the pair of operation pole mounting seats, a speed reducer is mounted on the motor, and a rotation shaft of the speed reducer is connected to a piston of the air cylinder. It is characterized by becoming.
【００１９】[0019]
【発明の実施の形態】図１を参照しながら請求項１の発
明に対応する炉内計装管取外し装置の第１の実施の形態
を説明する。なお、図１中、図５と同一部分には同一符
号を付して重複する部分の説明は省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of an in-furnace instrument tube removing apparatus according to the present invention will be described with reference to FIG. In FIG. 1, the same portions as those in FIG. 5 are denoted by the same reference numerals, and the description of the overlapping portions will be omitted.
【００２０】本実施の形態が図５に示す従来例と異なる
点は前記下部固定板10から下方の前記一対のフレーム３
に振動発生装置16を設置したことにある。その他の部分
は図５に示す構成と同様である。振動発生装置16として
は電動または空気作動によって振動が発生し、この振動
を前記一対のフレームを通して炉内計装管８に付与する
ものである。The present embodiment is different from the conventional example shown in FIG. 5 in that the pair of frames 3 below the lower fixing plate 10 are provided.
That is, the vibration generator 16 is installed in the vehicle. The other parts are the same as the configuration shown in FIG. The vibration generator 16 generates vibration by electric or pneumatic operation, and applies the vibration to the in-furnace instrumentation tube 8 through the pair of frames.
【００２１】本実施の形態によれば、炉内計装管８の取
外し作業時に振動発生装置16から一対のフレーム３を通
して炉内計装管８に強力な振動を加えることによって、
内側管８ａと外側管８ｂの隙間に付着しているスラッジ
や水垢を分解，除去または粉砕することができる。According to the present embodiment, a strong vibration is applied to the in-furnace instrumentation tube 8 from the vibration generator 16 through the pair of frames 3 at the time of removing the in-furnace instrumentation tube 8.
Sludge and scale attached to the gap between the inner pipe 8a and the outer pipe 8b can be decomposed, removed or crushed.
【００２２】したがって、スラッジや水垢を分解，除去
または粉砕することによって内側管８ａと外側管８ｂと
の固着を解除し、上部格子板14から炉内計装管８の取外
し作業が容易となる。また、従来例のように内側管８ａ
と外側管８ｂが固着した炉内計装管８をスティックカッ
タで切断する切断作業を行う必要がなく、この切断作業
に伴う切断層の発生がないので、炉水の清浄度向上につ
ながる効果がある。Accordingly, the fixation between the inner pipe 8a and the outer pipe 8b is released by decomposing, removing or pulverizing sludge and scale, and the work of removing the in-furnace instrumentation pipe 8 from the upper lattice plate 14 becomes easy. Also, as in the conventional example, the inner tube 8a
There is no need to perform a cutting operation for cutting the in-core instrumentation tube 8 to which the outer tube 8b is fixed with a stick cutter, and there is no generation of a cutting layer due to this cutting operation, so that the effect of improving cleanliness of the reactor water is obtained. is there.
【００２３】次に図２により請求項２の発明に対応する
第２の実施の形態を説明する。本実施の形態は第１の実
施の形態において、振動発生器16として複数の超音波発
信器17を使用したことにある。この超音波発信器17は一
対のフレーム３の下部のほかに炉内計装管８にも着脱自
在に取着している。なお、一対のフレーム３および炉内
計装管８以外の個所にも取着することができる。Next, a second embodiment of the present invention will be described with reference to FIG. In the present embodiment, a plurality of ultrasonic transmitters 17 are used as the vibration generator 16 in the first embodiment. The ultrasonic transmitter 17 is detachably attached not only to the lower portions of the pair of frames 3 but also to the instrumentation tube 8 in the furnace. In addition, it can be attached to places other than the pair of frames 3 and the instrumentation tube 8 in the furnace.
【００２４】本実施の形態によれば、第１の実施の形態
における作用効果のほかに炉内計装管８にも直接振動を
付与できるため、一対のフレーム３との相乗効果によっ
てスラッジや水垢の除去を速やかに行うことができ、作
業性が向上する。According to the present embodiment, in addition to the operation and effect of the first embodiment, vibration can be directly applied to the in-furnace instrumentation tube 8, so that the sludge and the scale are synergistic with the pair of frames 3. Can be promptly removed, and workability is improved.
【００２５】つぎに、請求項３の発明に対応する第３の
実施の形態を説明する。本実施の形態は第１の実施の形
態において、振動発生器16として高圧水またはアイスブ
ラスト発生装置18を使用し、この高圧水またはアイスブ
ラスト発生装置18にホース19の一端を接続し、ホース19
の他端にノズル20を取着し、このノズル20を下部固定板
10と固定部材11の間の一対のフレーム３に取着したこと
にある。ノズル20の吐出口は炉内計装管８に近接して設
けられる。高圧水またはアイスブラスト発生装置18は操
作ポール１の操作場所と同様のオペレーションフロア上
に設置されている。Next, a third embodiment corresponding to the third aspect of the present invention will be described. In this embodiment, a high pressure water or ice blast generator 18 is used as the vibration generator 16 in the first embodiment, and one end of a hose 19 is connected to the high pressure water or ice blast generator 18.
Attach the nozzle 20 to the other end of the
That is, it is attached to a pair of frames 3 between 10 and the fixing member 11. The discharge port of the nozzle 20 is provided near the in-core instrumentation tube 8. The high-pressure water or ice blast generator 18 is installed on the same operation floor as the operation place of the operation pole 1.
【００２６】本実施の形態によれば、高圧水またはアイ
スブラスト発生装置18で発生した高圧水またはアイスブ
ラストをホース19を通してノズル20に送り、ノズル20か
ら高圧水またはアイスブラストをジェット水流として直
接、炉心計装管８に噴射すると、炉心計装管に振動が付
与される。According to the present embodiment, high-pressure water or ice blast generated by the high-pressure water or ice blast generator 18 is sent to the nozzle 20 through the hose 19, and the high-pressure water or ice blast is directly sent from the nozzle 20 as a jet water stream. When injected into the core instrumentation tube 8, vibration is applied to the core instrumentation tube.
【００２７】これにより、内側管８ａと外側管８ｂとの
隙間に付着しているスラッジや水垢を分解，除去または
粉砕して炉内計装管８を上部格子板14から容易に取外す
ことができる。この実施の形態において高圧水またはア
イスブラストを噴射するため、炉水の汚染を防止でき
る。その他の作用効果は第１の実施の形態と同様なの
で、それらの説明は省略する。Thus, the in-furnace instrumentation tube 8 can be easily removed from the upper lattice plate 14 by decomposing, removing or pulverizing sludge and scale attached to the gap between the inner tube 8a and the outer tube 8b. . In this embodiment, since high-pressure water or ice blast is injected, contamination of reactor water can be prevented. Other functions and effects are the same as those of the first embodiment, and therefore, description thereof will be omitted.
【００２８】つぎに、図４により請求項４に対応する第
４の実施の形態を説明する。本実施の形態は、操作ポー
ル取付座12の下面にモータ21を逆さ吊りに取着し、この
モータ21に減速機22を取着し、この減速機22の回転軸23
を前記エアシリンダ４のピストン５に接続して炉内計装
管８に曲げ荷重を生じさせるように構成したことにあ
る。Next, a fourth embodiment of the present invention will be described with reference to FIG. In the present embodiment, a motor 21 is mounted on the lower surface of the operation pole mounting seat 12 in an upside-down manner, a speed reducer 22 is mounted on the motor 21, and a rotation shaft 23 of the speed reducer 22 is mounted.
Is connected to the piston 5 of the air cylinder 4 to generate a bending load on the in-core instrumentation tube 8.
【００２９】本実施の形態によれば、モータ21の駆動に
より回転軸23はピストン５にひねり回転を与えることに
よって炉内計装管８に曲げ荷重を生じさせ内側管８ａと
外側管８ｂにひねり振動を付与することにより、内側管
８ａと外側管８ｂとの隙間に付着したスラッジや水垢を
分解，除去または粉砕する。これにより、炉内計装管８
の内側管８ａに装置の重みが作用し、縮むことにより炉
内計装管８を上部格子板14から取外すことができる。According to this embodiment, the rotating shaft 23 twists the piston 5 by driving the motor 21 to generate a bending load on the in-furnace instrumentation tube 8 and twist the inner tube 8a and the outer tube 8b. By applying the vibration, sludge or scale attached to the gap between the inner pipe 8a and the outer pipe 8b is decomposed, removed or crushed. Thereby, the instrumentation pipe 8 in the furnace
The weight of the apparatus acts on the inner tube 8a of the furnace, and the instrumentation tube 8 in the furnace can be removed from the upper lattice plate 14 by contraction.
【００３０】なお、本発明の実施の形態では、炉内計装
管取外し装置に加振発生装置，超音波発信器またはジェ
ット水流噴射装置が個々に内蔵または外部に設けられて
いる例で説明したが、これらを複合して設けることがで
きる。また、炉心計装管を把持するフォーク部に動力に
よって炉内計装管に曲げ荷重を付与する機構を連結する
こともでき、この曲げ荷重付与機構と前記振動発生装置
を複合して設けることもできる。In the embodiment of the present invention, an example has been described in which a vibration generator, an ultrasonic transmitter, or a jet water jet device are individually provided inside or outside the furnace instrumentation tube removing device. However, these can be provided in combination. Further, a mechanism for applying a bending load to the in-core instrumentation tube by power can also be connected to a fork portion that grips the core instrumentation tube, and the bending load applying mechanism and the vibration generator can be provided in combination. it can.
【００３１】[0031]
【発明の効果】本発明によれば、炉内計装管に振動ない
しは曲げ荷重を付与することにより、炉内計装管の内側
管と外側管の隙間に堆積しているスラッジや水垢を分
解，除去または粉砕して内側管と外側管との固着を解除
して炉内計装管を上部格子板から容易に取外すことがで
きる。また、従来例のようにスティックカッタによる切
断作業を行うことの必要がなく、作業工数削減ととも
に、炉水の清浄度向上に寄与する。よって、炉内計装管
の取外し作業を容易にする作業性のすぐれた炉内計装管
取外し装置を提供できる。According to the present invention, by applying a vibration or a bending load to a furnace instrumentation pipe, sludge and scale deposited in a gap between an inner pipe and an outer pipe of the furnace instrumentation pipe are decomposed. By removing or crushing the inner tube and the outer tube, the in-furnace instrumentation tube can be easily removed from the upper lattice plate by releasing the adhesion between the inner tube and the outer tube. Further, there is no need to perform a cutting operation using a stick cutter as in the conventional example, which contributes to a reduction in the number of working steps and an improvement in the cleanliness of the reactor water. Therefore, it is possible to provide an in-furnace instrumentation tube removing apparatus with excellent workability that facilitates the in-furnace instrumentation tube removal operation.
【図１】本発明に係る炉内計装管取外し装置の第１の実
施例を示す立面図。FIG. 1 is an elevation view showing a first embodiment of an in-furnace instrument tube removal apparatus according to the present invention.
【図２】本発明に係る炉内計装管取外し装置の第２の実
施例を示す立面図。FIG. 2 is an elevational view showing a second embodiment of the in-furnace instrument tube removing apparatus according to the present invention.
【図３】本発明に係る炉内計装管取外し装置の第３の実
施例を示す立面図。FIG. 3 is an elevation view showing a third embodiment of the in-furnace instrument tube removing apparatus according to the present invention.
【図４】本発明に係る炉内計装管取外し装置の第４の実
施例を示す立面図。FIG. 4 is an elevational view showing a fourth embodiment of the in-furnace instrument tube removal apparatus according to the present invention.
【図５】従来の炉内計装管取外し装置を示す立面図。FIG. 5 is an elevational view showing a conventional instrumentation tube removal device in a furnace.
１…操作ポール、２…上部固定板、３…一対のフレー
ム、４…エアシリンダ、５…ピストン、６…クランク、
７…スライド板、８…炉内計装管、８ａ…内側管、８ｂ
…外側管、８ｃ…ブッシュ、９…フォーク部、10…下部
固定板、11…固定部材、12…操作ポール取付座、13…挟
み棒、14…上部格子板、15…信号ケーブル、16…振動発
生装置、17…超音波発信器、18…高圧水またはアイスブ
ラスト発生装置、19…ホース、20…ノズル、21…モー
タ、22…減速機、23…回転軸。DESCRIPTION OF SYMBOLS 1 ... Operation pole, 2 ... Upper fixed plate, 3 ... Pair of frames, 4 ... Air cylinder, 5 ... Piston, 6 ... Crank,
7: slide plate, 8: furnace instrumentation tube, 8a: inner tube, 8b
... outer tube, 8c ... bush, 9 ... fork, 10 ... lower fixing plate, 11 ... fixing member, 12 ... operation pole mounting seat, 13 ... pinching rod, 14 ... upper lattice plate, 15 ... signal cable, 16 ... vibration Generator: 17 Ultrasonic transmitter, 18: High pressure water or ice blast generator, 19: Hose, 20: Nozzle, 21: Motor, 22: Reduction gear, 23: Rotating shaft.
Claims (4)
と、この上部固定板の下部に取着された一対のフレーム
と、この一対のフレーム内に設けられたエアシリンダ
と、このエアシリンダのピストンにクランクを介して取
着されたスライド板と、このスライド板に取着され炉内
計装管を把持するフォーク部と、前記スライド板の下部
に設けられた下部固定板とを具備した炉内計装管取外し
装置において、前記一対のフレームに振動発生装置を設
置してなることを特徴とする炉内計装管取外し装置。An upper fixed plate on which an operation pole is mounted, a pair of frames mounted below the upper fixed plate, an air cylinder provided in the pair of frames, and an air cylinder provided in the pair of frames. A slide plate attached to the piston through a crank, a fork portion attached to the slide plate and holding the in-furnace instrumentation tube, and a lower fixed plate provided below the slide plate. A device for removing instrumentation pipes in a furnace, wherein a vibration generator is installed on the pair of frames.
からなり、この複数の超音波発信装置は少なくとも前記
一つのフレームおよび前記炉内計装管に取着してなるこ
とを特徴とする請求項１記載の炉内計装管取外し装置。2. The vibration generating device comprises a plurality of ultrasonic transmitters, and the plurality of ultrasonic transmitters are attached to at least the one frame and the in-furnace instrumentation tube. The instrumentation pipe removal device according to claim 1.
はアイスブラスト発生装置からなり、前記下部固定板の
下方で前記一対のフレームの下端部にノズルを設け、こ
のノズルにノズルホースの一端を接続し、前記ノズルホ
ースの他端を前記高圧水発生装置またはアイスブラスト
発生装置に接続してなることを特徴とする請求項１記載
の炉内計装管取外し装置。3. The vibration generator comprises a high-pressure water generator or an ice blast generator. A nozzle is provided at a lower end of the pair of frames below the lower fixing plate, and one end of a nozzle hose is connected to the nozzle. The in-furnace instrument tube removal device according to claim 1, wherein the other end of the nozzle hose is connected to the high-pressure water generator or the ice blast generator.
を取着し、このモータに減速機を取着し、この減速機の
回転軸を前記エアシリンダのピストンに接続してなるこ
とを特徴とする請求項１記載の炉内計装管取外し装置。4. A motor is mounted in the pair of operation pole mounting seats, a speed reducer is mounted on the motor, and a rotation shaft of the speed reducer is connected to a piston of the air cylinder. The in-furnace instrument tube removing device according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9298099A JPH11133179A (en) | 1997-10-30 | 1997-10-30 | Intra-furnace instrumentation tube detaching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9298099A JPH11133179A (en) | 1997-10-30 | 1997-10-30 | Intra-furnace instrumentation tube detaching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11133179A true JPH11133179A (en) | 1999-05-21 |
Family
ID=17855151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9298099A Pending JPH11133179A (en) | 1997-10-30 | 1997-10-30 | Intra-furnace instrumentation tube detaching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11133179A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2242059A3 (en) * | 2009-04-14 | 2012-05-23 | GE-Hitachi Nuclear Energy Americas LLC | Apparatus and method for removing a dry tube assembly from a nuclear reactor pressure vessel |
| EP3333855A1 (en) * | 2016-12-09 | 2018-06-13 | GE-Hitachi Nuclear Energy Americas LLC | Systems and methods for nuclear reactor dry tube assembly removal and installation |
-
1997
- 1997-10-30 JP JP9298099A patent/JPH11133179A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2242059A3 (en) * | 2009-04-14 | 2012-05-23 | GE-Hitachi Nuclear Energy Americas LLC | Apparatus and method for removing a dry tube assembly from a nuclear reactor pressure vessel |
| US8631563B2 (en) | 2009-04-14 | 2014-01-21 | Ge-Hitachi Nuclear Energy Americas Llc | Apparatus and method for removing a dry tube assembly from a nuclear reactor pressure vessel |
| EP3333855A1 (en) * | 2016-12-09 | 2018-06-13 | GE-Hitachi Nuclear Energy Americas LLC | Systems and methods for nuclear reactor dry tube assembly removal and installation |
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