JPH0438319Y2 - - Google Patents
Info
- Publication number
- JPH0438319Y2 JPH0438319Y2 JP7185684U JP7185684U JPH0438319Y2 JP H0438319 Y2 JPH0438319 Y2 JP H0438319Y2 JP 7185684 U JP7185684 U JP 7185684U JP 7185684 U JP7185684 U JP 7185684U JP H0438319 Y2 JPH0438319 Y2 JP H0438319Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- carriage
- tool head
- tube
- exchanger 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.)
- Expired
Links
- 238000012423 maintenance Methods 0.000 claims description 29
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 238000012546 transfer Methods 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 description 4
- 230000001680 brushing effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Manipulator (AREA)
Description
【考案の詳細な説明】
〈産業上の利用分野〉
本考案は、原子力発電プラントの熱交換器にお
ける伝熱管の保守装置に関するものである。Detailed Description of the Invention <Industrial Application Field> The present invention relates to a maintenance device for heat transfer tubes in a heat exchanger of a nuclear power plant.
〈従来の技術〉
一般に、原子力発電プラントの蒸気発生器(熱
交換器)における伝熱管の保守作業項目には、伝
熱管内面のブラツシング作業およびクリーニング
作業があり、管板面から120mmまでの範囲を実施
している。しかしながら、従来の伝熱管保守作業
方式では、第1図に示すように、蒸気発生器1の
水室内に設置された案内装置3により所定の保守
対象伝熱管2のアドレスへ案内装置3に保持され
たガイドチユーブ4の端面を案内し、ガイドチユ
ーブ4内に交換可能なブラシ用またはクリーニン
グ用の工具ヘッド5と、工具ヘツド5を先端部に
装着したトルクケーブル6と、トルクケーブル6
を回転させる工具回転用モータとからなる保守工
具を挿入し、上記保守工具を作業員が保持して工
具回転用モータ7を回転させながら伝熱管2内の
保守作業を行なつている。<Conventional technology> In general, maintenance work for heat transfer tubes in steam generators (heat exchangers) of nuclear power plants includes brushing and cleaning of the inner surfaces of the heat transfer tubes, which cover an area up to 120 mm from the tube sheet surface. It is being implemented. However, in the conventional heat exchanger tube maintenance work method, as shown in FIG. A tool head 5 for brushing or cleaning that is replaceable inside the guide tube 4, a torque cable 6 with the tool head 5 attached to its tip, and a torque cable 6 that guides the end face of the guide tube 4.
A maintenance tool consisting of a tool rotation motor that rotates the heat exchanger tube 2 is inserted, and a worker holds the maintenance tool while rotating the tool rotation motor 7 while performing maintenance work inside the heat exchanger tube 2.
〈考案が解決しようとする課題〉
上述した従来方式による伝熱管保守作業では、
作業員が保守工具の挿入・抜出しを行なうなどの
手作業を行なうため、管軸方向の施工範囲にバラ
ツキが生じ、必要施工範囲以上を実施したりする
等、保守精度や品質が一定しないという欠点があ
る。また、作業員が蒸気発生器のマンホール近傍
で長時間作業するので、被曝量が増大し危険度が
高い等の問題がある。<Problems to be solved by the invention> In the heat exchanger tube maintenance work using the conventional method described above,
As workers perform manual work such as inserting and removing maintenance tools, there are variations in the construction range in the direction of the pipe axis, and maintenance accuracy and quality are inconsistent, such as the work being carried out beyond the required range. There is. Furthermore, since workers work for long periods of time near the manhole of the steam generator, there are problems such as an increased amount of radiation exposure and a high degree of danger.
〈課題を解決するための手段〉
本考案は係る従来の問題点を解決するために提
案されたもので、保守工具による伝熱管内の管軸
方向の保守施工範囲う均一に施工するとともに、
保守施工範囲内で管軸方向を往復繰返し施工する
ことにより、工具ヘツドの交換等以外は作業員が
蒸気発生器のマンホール近傍に近付く必要がな
く、被曝量を大幅に軽減することを目的とした熱
交換器の保守装置を提供せんとするものである。<Means for Solving the Problems> The present invention was proposed in order to solve the conventional problems, and it is possible to uniformly perform maintenance within the tube axis direction within the heat transfer tube using a maintenance tool, and to
By repeatedly performing work back and forth in the direction of the pipe axis within the maintenance work area, workers do not need to approach the vicinity of the steam generator manhole except for replacing tool heads, and the aim is to significantly reduce radiation exposure. The purpose is to provide a maintenance device for heat exchangers.
〈実施例〉
以下、本考案に係る伝熱管保守装置を図面に示
した実施例に基づいて詳細に説明する。 第2図
は本考案に係る伝熱管保守装置を示す概略構成
図、第3図は第2図の要部を示す上面図であつ
て、1は蒸気発生器、2は伝熱管、3は蒸気発生
器1の水室内に設置された案内装置、4は案内装
置3に保持されたガイドチユーブ、5はブラシ用
またはクリーニング用に交換可能な工具ヘツド、
6は先端部に工具ヘツド5を装着したトルクケー
ブル、7はトルクケーブル6を回転させる工具回
転用モータである。工具ヘツド5は、トルクケー
ブル6を介して工具回転用モータ7により回転さ
せられるとともに、工具ヘツド5を電熱管2内に
挿入したり引抜いたりする送り装置は、工具ヘツ
ド5をトルクケーブル6とともに伝熱管2内へ挿
入または引抜く挿入・引抜きシリンダ8と、この
シリンダ8を保持してガイドするキヤリツジ10
と、キヤリツジ10を案内するガイド軸11と、
伝熱管2内での往復繰返し動作を行なうために工
具ヘツド5の下限位置を定めるストツパシリンダ
9およびストリツプリンク13と、全体を保持す
るケーシング12とから構成されている。<Example> Hereinafter, a heat exchanger tube maintenance device according to the present invention will be described in detail based on an example shown in the drawings. Fig. 2 is a schematic configuration diagram showing a heat exchanger tube maintenance device according to the present invention, and Fig. 3 is a top view showing the main parts of Fig. 2, in which 1 is a steam generator, 2 is a heat exchanger tube, and 3 is a steam generator. A guide device installed in the water chamber of the generator 1; 4 a guide tube held in the guide device 3; 5 a replaceable tool head for brushing or cleaning;
6 is a torque cable with a tool head 5 attached to its tip, and 7 is a tool rotation motor for rotating the torque cable 6. The tool head 5 is rotated by a tool rotation motor 7 via a torque cable 6, and a feeding device that inserts and pulls the tool head 5 into and out of the heating tube 2 transmits power to the tool head 5 together with the torque cable 6. An insertion/extraction cylinder 8 that is inserted into or pulled out of the heat tube 2, and a carriage 10 that holds and guides this cylinder 8.
and a guide shaft 11 for guiding the carriage 10.
It is comprised of a stopper cylinder 9 and a strip link 13 that define the lower limit position of the tool head 5 for repeated reciprocation within the heat exchanger tube 2, and a casing 12 that holds the entire tool.
このように構成された伝管保守装置による保守
作業は、下記の手順で行なわれる。 Maintenance work using the conduit maintenance device configured as described above is performed in the following steps.
すなわち、まず本考案に係る伝熱管保守装置は
蒸気発生器1のマンホール近傍に据付けられ、案
内装置3により所定のアドレスへ案内された後に
使用されるものであり、新内装置3の移動中や保
守作業後は、伝熱管2より工具ヘツド5がガイド
チユーブ4内に引抜かれており、案内装置3の移
動に支障のない位置に保持されている。そこで所
定の保守対象伝熱管2の保守作業を施工する時に
は、工具回転用モータ7を回転操作した状態でス
トツパシリンダ9のピストンロツドを収縮させた
解除状態にするとともに、挿入・引抜きシリンダ
8のピストンロツドを収縮させた挿入操作をさ
せ、工具ヘツド5を伝熱管2内へ挿入して管内上
下施工位置に工具ヘツド5が設定される。 That is, first, the heat exchanger tube maintenance device according to the present invention is installed near the manhole of the steam generator 1, and is used after being guided to a predetermined address by the guide device 3, and is used while the new internal device 3 is being moved. After the maintenance work, the tool head 5 is pulled out from the heat exchanger tube 2 into the guide tube 4, and is held in a position where movement of the guide device 3 is not hindered. Therefore, when carrying out maintenance work on the heat exchanger tube 2 to be maintained, the piston rod of the stopper cylinder 9 is brought into the contracted and released state while the tool rotation motor 7 is rotated, and the piston rod of the insertion/extraction cylinder 8 is The tool head 5 is inserted into the heat transfer tube 2 by an insertion operation in which the heat exchanger tube 2 is contracted, and the tool head 5 is set at the upper and lower working positions within the tube.
つづいて、ストツパシリンダ9のピストンロツ
ドを伸長してストツプ操作することにより、スト
ツプリンク13が作動してストツパとなる。この
状態で、挿入・引抜きシリンダ8のピストンロツ
ドを伸長させて引抜き操作すると、シリンダ8の
ピストンロツド部に固定されたキヤリツジ10が
ストツプリンク13に当接する位置まで引抜き動
作を行なうことにより、管内下限施工位置に工具
ヘツド5が設定される。したがって、挿入・引抜
きシリンダ8のピストンロツドが収縮した挿入動
作位置とピストンロツドが伸長してキヤリツジ1
0がストツプリンク13に当り停止する位置間と
を往復繰返し移動することによつてサイクル施工
作業ができる。 Subsequently, by extending the piston rod of the stopper cylinder 9 and performing a stop operation, the stop link 13 is actuated to become a stopper. In this state, when the piston rod of the insertion/extraction cylinder 8 is extended and pulled out, the carriage 10 fixed to the piston rod portion of the cylinder 8 is pulled out to a position where it abuts the stop link 13, thereby removing the lower limit of the pipe. The tool head 5 is set at the position. Therefore, the piston rod of the insertion/extraction cylinder 8 is in the insertion operation position where it is contracted, and the piston rod is extended and the carriage 1 is
Cyclic construction work can be performed by repeatedly moving back and forth between the positions where the 0 hits the stop link 13 and stops.
サイクル施工作業の完了後はストツパシリンダ
9のピストンロツドを収縮させて解除操作するこ
とともに、挿入・引抜きシリンダ8のピストンロ
ツドを伸長させた引抜き操作を行なうことによ
り、所定の伝熱管保守施工が終る。 After the cycle construction work is completed, the piston rod of the stopper cylinder 9 is contracted and released, and the piston rod of the insertion/extraction cylinder 8 is extended and pulled out, thereby completing the prescribed heat transfer tube maintenance work.
なお、本考案の実施例では工具ヘツド5が工具
回転用モータ7によりトルクケーブル6を介して
回転させながら伝熱管2内に挿入する場合を説明
しているが、予め伝熱管2内の管内上限施工位置
まで全ストロークだけ工具ヘツド5を挿入した後
回転操作するようにしても良い。 In the embodiment of the present invention, a case is explained in which the tool head 5 is inserted into the heat exchanger tube 2 while being rotated by the tool rotation motor 7 via the torque cable 6. The rotation operation may be performed after the tool head 5 is inserted through the entire stroke to the construction position.
〈考案の効果〉
以上、図面に示した実施例にもとずいて詳細に
説明したように本考案に係る熱交換器の伝熱管保
守装置によれば、工具ヘツドを伝熱管内の管軸方
向における所定の保守装置へ容易に挿入または引
抜き動作が行なえるとともに、伝熱管内での工具
ヘツドを、所定の上限および下限位置間で往復繰
返し動作を行なうことができるものであり、シリ
ンダ等の汎用性のある部品類から構成された簡単
な構成で取扱性も良く、工具ヘツド交換時を除け
ば作業員に負担がかからず自動化が可能である。<Effect of the invention> As described above in detail based on the embodiment shown in the drawings, according to the heat exchanger tube maintenance device of the present invention, the tool head is moved in the tube axis direction within the heat exchanger tube. It can be easily inserted into or pulled out from the specified maintenance equipment in the heat exchanger tube, and the tool head can be repeatedly moved back and forth between the specified upper and lower limit positions in the heat transfer tube. It has a simple structure made up of flexible parts and is easy to handle, and can be automated without placing any burden on the operator, except when replacing the tool head.
また、本考案に係る装置を使用することにより
従来人手に頼つていた伝熱管保守作業の一部が手
動より遠隔操作が可能になり、人力作業が不要に
なるとともに、それに伴なつて作業員の被曝量が
著しく軽減されるので、安全性の面からも極めて
有用であり、しかも、保守精度や品質を一層向上
させることができる。 In addition, by using the device according to the present invention, some of the heat exchanger tube maintenance work that conventionally relied on human hands can be performed remotely rather than manually, eliminating the need for manual work and reducing the number of workers. Since the amount of radiation exposure is significantly reduced, it is extremely useful from the standpoint of safety, and furthermore, maintenance accuracy and quality can be further improved.
第1図は従来の伝熱管保守作業方式の概略説明
図、第2図は本考案に係る熱交換器の伝熱管保守
装置を示す概略構成図、第3図は第2図の要部を
示す上面図である。
図面中、1は蒸気発生管、2は伝熱管、3は案
内装置、4はガイドチユーブ、5は工具ヘツド、
6はトルクケーブル、7は工具回転用モータ、8
は挿入・引抜きシリンダ、9はストツパシリン
ダ、10はキヤリツジ、11はガイド軸、12は
ケーシング、13はストツプリンク。
Fig. 1 is a schematic explanatory diagram of a conventional heat exchanger tube maintenance work method, Fig. 2 is a schematic configuration diagram showing a heat exchanger tube maintenance device for a heat exchanger according to the present invention, and Fig. 3 shows the main parts of Fig. 2. FIG. In the drawing, 1 is a steam generation tube, 2 is a heat exchanger tube, 3 is a guide device, 4 is a guide tube, 5 is a tool head,
6 is a torque cable, 7 is a tool rotation motor, 8
1 is an insertion/extraction cylinder, 9 is a stopper cylinder, 10 is a carriage, 11 is a guide shaft, 12 is a casing, and 13 is a stop link.
Claims (1)
トルクケーブルを介して回転させる工具回転用モ
ータと、同モータを支持するキヤリツジと、同キ
ヤリツジに摺動自在に嵌合したガイド軸を具えた
台車と、同台車と前記キヤリツジとの間に介装さ
れ同キヤリツジの往復動を介して前記工具ヘツド
を前記伝熱管の管軸方向に往復動させる挿入・引
抜きシリンダと、前記台車に設けられたストツパ
シリンダ及び同ストツパシリンダに連結され前記
キヤリツジの移動経路上に出没して前記工具ヘツ
ドの下限停止位置を定めるストツプリンクを有し
てなることを特徴とする熱交換器の伝熱管保守装
置。 A tool rotation motor that rotates a tool head that performs surface maintenance work inside a heat exchanger tube via a torque cable, a carriage that supports the motor, and a trolley equipped with a guide shaft that is slidably fitted to the carriage. , an insertion/extraction cylinder interposed between the dolly and the carriage and reciprocating the tool head in the tube axis direction of the heat transfer tube through the reciprocating motion of the carriage; and a stock cylinder provided on the dolly. A heat exchanger tube maintenance device for a heat exchanger, comprising a stopper cylinder and a stoplink connected to the stopper cylinder and retracted onto the movement path of the carriage to determine a lower limit stop position of the tool head. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7185684U JPS60185300U (en) | 1984-05-18 | 1984-05-18 | Heat exchanger heat exchanger tube maintenance equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7185684U JPS60185300U (en) | 1984-05-18 | 1984-05-18 | Heat exchanger heat exchanger tube maintenance equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60185300U JPS60185300U (en) | 1985-12-09 |
JPH0438319Y2 true JPH0438319Y2 (en) | 1992-09-08 |
Family
ID=30609720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7185684U Granted JPS60185300U (en) | 1984-05-18 | 1984-05-18 | Heat exchanger heat exchanger tube maintenance equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60185300U (en) |
-
1984
- 1984-05-18 JP JP7185684U patent/JPS60185300U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS60185300U (en) | 1985-12-09 |
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