JPH05281391A - Camera device for inspecting foreign material in steam generator water room - Google Patents
Camera device for inspecting foreign material in steam generator water roomInfo
- Publication number
- JPH05281391A JPH05281391A JP4074343A JP7434392A JPH05281391A JP H05281391 A JPH05281391 A JP H05281391A JP 4074343 A JP4074343 A JP 4074343A JP 7434392 A JP7434392 A JP 7434392A JP H05281391 A JPH05281391 A JP H05281391A
- Authority
- JP
- Japan
- Prior art keywords
- camera
- steam generator
- water chamber
- camera device
- support base
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/002—Component parts or details of steam boilers specially adapted for nuclear steam generators, e.g. maintenance, repairing or inspecting equipment not otherwise provided for
- F22B37/003—Maintenance, repairing or inspecting equipment positioned in or via the headers
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は原子力プラントに使用さ
れている蒸気発生器の水室内異物を点検する為に適用さ
れるカメラ装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera device applied to inspect foreign matters in a water chamber of a steam generator used in a nuclear power plant.
【０００２】[0002]
【従来の技術】原子力プラントでは、定期検査のため、
プラント停止後未だ高温多湿状態で、蒸気発生器のマン
ホール蓋を取外し、水室内部に作業員が入り目視により
異物確認作業を行なっている。2. Description of the Related Art In a nuclear power plant, for periodic inspection,
After the plant was stopped, the manhole cover of the steam generator was removed, and the worker entered the inside of the water chamber to visually check for foreign substances in a hot and humid condition.
【０００３】[0003]
【発明が解決しようとする課題】前述の従来技術には次
のような問題点がある。 （１）蒸気発生器水室内は、高温多湿で１次冷却水側の
ため放射線量も高い。従って、水室内で点検を行う作業
員の作業時間に制限があり、作業員の放射線被曝線量当
量も多い。 （２）水室内は高温多湿のため作業員が着用しているエ
アラインマスク（防護カスク）のガラスに水滴や曇りが
発生し、充分な確認作業が行えない。 （３）通常のカメラで点検する場合でも、上記（２）と
同様に、水滴や曇りが発生し、十分な確認作業が行えな
い。The above-mentioned prior art has the following problems. (1) Since the steam generator water chamber is hot and humid and the primary cooling water side, the radiation dose is high. Therefore, there is a limit to the working time of the worker who inspects in the water chamber, and the radiation exposure dose equivalent of the worker is also large. (2) Due to the high temperature and humidity inside the water chamber, water drops and cloudiness occur on the glass of the airline mask (protective cask) worn by workers, and sufficient confirmation work cannot be performed. (3) Even when inspecting with a normal camera, as in the case of (2) above, water droplets and cloudiness occur and sufficient confirmation work cannot be performed.
【０００４】本発明は上記の従来技術における問題点を
解消し、遠隔自動操作で蒸気発生器の水室内を点検する
ことのできる蒸気発生器水室内異物点検用カメラ装置を
提供することを目的とするものである。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems in the prior art and to provide a camera device for inspecting foreign matter in a steam generator water chamber, which can inspect the water chamber of the steam generator by remote automatic operation. To do.
【０００５】[0005]
（１）水室上部の管板下面中央部にパンチルト部を有す
るカメラの支持台を、水室外より操作棒で取付ける。 （２）パンチルト部には、カメラのパンニング、チルチ
ング機構及び照明装置を設ける。 （３）カメラには、エアブローによるカメラレンズの水
滴除去機構や曇り止め機構を設ける。(1) Attach a camera support having a pan-tilt portion at the center of the lower surface of the tube plate above the water chamber with an operating rod from outside the water chamber. (2) The pan / tilt unit is provided with a panning / tilting mechanism for the camera and a lighting device. (3) The camera is provided with a water drop removing mechanism for the camera lens by air blow and an anti-fog mechanism.
【０００６】[0006]
【作用】蒸気発生器水室のマンホールより、操作棒を用
いて水室内にカメラ装置を挿入し、水室上部の管板にカ
メラの支持板を固定する。カメラを遠隔操作でパンニン
グ、チルチングすることにより、付属の照明装置を使用
して水室内全域及びノズル部分の異物、疵等を遠隔、自
動操作で点検する。The camera device is inserted into the water chamber from the manhole of the water chamber of the steam generator, and the camera support plate is fixed to the tube plate above the water chamber. By remotely panning and tilting the camera, the attached lighting device is used to remotely and automatically check foreign matters, flaws, etc. in the entire water chamber and nozzle.
【０００７】[0007]
【実施例】本発明の実施例を図１乃至図８について説明
する。本発明による異物点検用カメラ装置は、図１に示
すように、カメラユニット１、支持台２、コントローラ
ユニット３、モニタテレビ４及び操作棒５で構成され、
カメラユニット１の電源遠隔操作及びデータの伝達は、
ケーブル６により行われ、また水滴除去及び曇り止め機
構２０ａ用のエアはエアライン２０ｃにより供給され
る。コントローラユニット３及びモニタテレビ４は蒸気
発生器の水室７の外部に設置され、カメラユニット１の
パンニング、チルチングの遠隔操作及び水室７及びノズ
ル８ｂの内部映像を表示する。パンニング角度αは３６
０°、チルチング角度βは略１３０°可能である。支持
台２はカメラユニット１を取付けた状態で、操作棒５の
先端に取付けられ、マンホール８から水室７内に挿入さ
れ、管板９のほぼ、中央部に固定される。従ってパンニ
ングとチルチングとの組合せにより、管板９を含め水室
７及びノズル８ｂの内部全域が点検出来る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the foreign matter inspection camera device according to the present invention comprises a camera unit 1, a support base 2, a controller unit 3, a monitor TV 4, and an operating rod 5.
Remote power control of the camera unit 1 and data transmission are
Air for the water drop removing and anti-fog mechanism 20a is supplied by the air line 20c. The controller unit 3 and the monitor television 4 are installed outside the water chamber 7 of the steam generator, and display the panning and tilting of the camera unit 1 by remote control and the internal images of the water chamber 7 and the nozzle 8b. Panning angle α is 36
The tilting angle β can be 0 ° and the tilting angle β can be approximately 130 °. The support base 2 is attached to the tip of the operation rod 5 with the camera unit 1 attached, inserted into the water chamber 7 from the manhole 8, and fixed to almost the center of the tube sheet 9. Therefore, by combining the panning and the tilting, the entire inside of the water chamber 7 and the nozzle 8b including the tube sheet 9 can be inspected.
【０００８】支持台２は図２に示すように、支持板１
０、クランプ機構１１及び逆止弁機構１２で構成され、
カメラユニット１を取付ける様になっている。クランプ
機構１１は、従来から水室７内の作業用工具用に使用さ
れているものと同じ構造である。管板９には熱交換用の
伝熱管１３が多数あり、クランプ機構１１の間隔は、伝
熱管１３の取付けピッチに合せた長さにする。クランプ
機構１１は、テーパ軸１４を有するピストン軸１５を空
気圧で操作し、円周方向に等分割されたコッタ１６を伝
熱管１３内面に押付けて、固定する機構であり、固定解
除時はＯリング１６ａの弾性によりコッタ１６を引っ込
める。操作用空気圧を導入する逆止弁機構１２も従来か
ら使用されている構造で、逆止弁１７は操作棒５接続時
以外はバネ１８で常に閉じられている。As shown in FIG. 2, the support base 2 includes a support plate 1
0, a clamp mechanism 11 and a check valve mechanism 12,
The camera unit 1 is attached. The clamp mechanism 11 has the same structure as that conventionally used for a working tool in the water chamber 7. The tube sheet 9 has a large number of heat transfer tubes 13 for heat exchange, and the interval between the clamp mechanisms 11 is set to a length according to the mounting pitch of the heat transfer tubes 13. The clamp mechanism 11 is a mechanism for operating a piston shaft 15 having a taper shaft 14 by air pressure and pressing a cotter 16 equally divided in the circumferential direction against the inner surface of the heat transfer tube 13 to fix the cotter 16, and when releasing the fixation, an O-ring. The elasticity of 16a retracts the cotter 16. The check valve mechanism 12 for introducing the operating air pressure has a structure that has been conventionally used, and the check valve 17 is always closed by the spring 18 except when the operation rod 5 is connected.
【０００９】カメラユニット１は、パンチルト部１９及
びカメラ２０及び照明部（図示していない）を備えてお
り、パンニング角度αは３６０°、チルチング角度βは
略１３０°調節し得る。このカメラユニット１のパンチ
ルト部１９はパン用、チルト用のモータを内蔵したもの
である。カメラ２０内部に照明部を備えており、チルチ
ング角度βが最大位置（点線）ではカメラヘッドは斜め
上になり、パンニング角度αと組合せることにより、水
室７内及びノズル８ｂ部分が全域点検出来る。The camera unit 1 includes a pan-tilt portion 19, a camera 20 and an illumination portion (not shown), and the panning angle α can be adjusted to 360 ° and the tilting angle β can be adjusted to approximately 130 °. The pan / tilt portion 19 of the camera unit 1 has a built-in pan / tilt motor. The camera 20 is provided with an illuminating section, the camera head is diagonally upward at the position where the tilting angle β is the maximum (dotted line), and by combining with the panning angle α, the entire inside of the water chamber 7 and the nozzle 8b can be inspected. ..
【００１０】カメラ２０の前方レンズ部２０ｂには、エ
アブローによる水滴除去及び曇り止め機構２０ａが設け
られており、高温多湿の蒸気発生器水室内に本装置を搬
入した際に、レンズ２０ｂ表面に付着する水滴及び曇り
を外部からのエアライン２０ｃで供給されるエアーを吹
きつけることにより、除去し、カメラ２０の鮮明な視界
を確保する。A front lens portion 20b of the camera 20 is provided with a water drop removing and fog-preventing mechanism 20a by air blow, and adheres to the surface of the lens 20b when the apparatus is carried into a high temperature and high humidity steam generator water chamber. The water droplets and cloudiness that occur are removed by blowing air supplied from the outside through the air line 20c, and a clear view of the camera 20 is secured.
【００１１】操作棒５を逆止弁機構１２に接続した状態
を図３，図４に示す。操作棒５の先端には空気ノズル２
１が設けてある。２１ａはクランプ機構１１の固定用空
気圧ノズル、２１ｂは固定解除用ノズルである。空気ノ
ズル２１には、ホース２２により水室７の外部から圧縮
空気が供給される。図３，４の様に、空気ノズル２１を
逆止弁機構１２に挿入すると逆止弁１７が押され、クラ
ンプ機構１１のピストン軸１５への空気通路が開放され
る。操作棒５の手元には、ホース２２ａ，２２ｂに夫々
切換弁（図示していない）があり、これら切換弁の操作
でピストン軸１５が移動し、固定又は固定解除が行われ
る。クランプした後は、操作棒５は本装置を水室内に残
したまま、作業員により引抜かれるが、引抜かれると、
図２の様に、逆止弁１７がバネ１８により閉じられ、固
定状態が維持される。The state where the operating rod 5 is connected to the check valve mechanism 12 is shown in FIGS. The air nozzle 2 is provided at the tip of the operating rod 5.
1 is provided. Reference numeral 21a is a fixing pneumatic nozzle of the clamp mechanism 11, and 21b is a fixing releasing nozzle. Compressed air is supplied to the air nozzle 21 from the outside of the water chamber 7 by a hose 22. As shown in FIGS. 3 and 4, when the air nozzle 21 is inserted into the check valve mechanism 12, the check valve 17 is pushed and the air passage to the piston shaft 15 of the clamp mechanism 11 is opened. At the hands of the operating rod 5, there are switching valves (not shown) on the hoses 22a and 22b, respectively, and the piston shaft 15 is moved by the operation of these switching valves to fix or release the fixing. After being clamped, the operating rod 5 is pulled out by an operator with the device left in the water chamber.
As shown in FIG. 2, the check valve 17 is closed by the spring 18, and the fixed state is maintained.
【００１２】上記異物点検用カメラ装置の操作要領を図
５〜図８に示す。図５は、支持台２を操作棒５に取付け
てマンホール８から挿入する所である。この時は、図
３，４で説明した逆止弁１７には解除用に空気圧が作用
させてある。図６は、管板９に支持台２を図２の様に装
着し、固定側逆止弁１７に空気圧を作用させて支持台２
を管板９に固定した所である。The operating procedure of the foreign matter inspection camera device is shown in FIGS. In FIG. 5, the support base 2 is attached to the operation rod 5 and inserted through the manhole 8. At this time, air pressure is applied to the check valve 17 described in FIGS. 3 and 4 for releasing. In FIG. 6, the support base 2 is mounted on the tube sheet 9 as shown in FIG. 2, and the fixed side check valve 17 is acted on by air pressure to support the support base 2.
Is fixed to the tube sheet 9.
【００１３】図７は、操作棒５を引抜き、カメラ２０に
より水室７及びノズル部８ｂの内面を観察している所
で、カメラ２０にはパンニング角α、チルチング角βが
与えられて点検する方向が変えられる。図８は、点検作
業の終了後に支持台２を外す所で、図６の状態に操作棒
５を取付け、図３，４の固定逆止弁側の空気圧を抜き、
解除用逆止弁側に空気圧を作用させて支持台２を取外し
マンホール８から搬出する。In FIG. 7, the operation rod 5 is pulled out, and the camera 20 is observing the inner surfaces of the water chamber 7 and the nozzle portion 8b. The camera 20 is given a panning angle α and a tilting angle β for inspection. The direction can be changed. FIG. 8 shows a place where the support base 2 is removed after the inspection work is completed, and the operation rod 5 is attached to the state shown in FIG. 6 to release the air pressure on the fixed check valve side of FIGS.
Air pressure is applied to the release check valve side to remove the support base 2 and carry it out from the manhole 8.
【００１４】[0014]
【発明の効果】本発明による蒸気発生器水室内異物点検
用カメラ装置は、蒸気発生器水室の管板に着脱可能に固
定される支持台と、前記支持台にパンニング及びチルチ
ング可能に取付けられた照明付きカメラと、前記カメラ
のレンズに対する水滴除去及び曇り止め機構と、前記支
持台に着脱可能に接続され且つ同支持台の管板に対する
着脱を操作する操作棒とを具えたことにより、次の効果
を有する。 （１）操作棒を使用して、管板下面にカメラ装置を遠隔
操作により取付けることができる。 （２）上記（１）の状態で、カメラを旋回させて、水室
及びノズル内部を点検することができる。 （３）カメラには、水滴除去及び曇り止め機構を有する
ので、高温多湿、高放射線雰囲気内で水室内の点検がで
き、作業員の労力の軽減、放射線被曝線量当量の低減が
図れる。The camera device for inspecting foreign matter in the steam generator water chamber according to the present invention is provided with a support base detachably fixed to the tube plate of the steam generator water chamber and a panning and tilting attachment to the support base. By providing a camera with illumination, a mechanism for removing water droplets on the lens of the camera and an anti-fog mechanism, and an operation rod detachably connected to the support base and operating attachment / detachment with respect to the tube plate of the support base, Have the effect of. (1) The camera device can be remotely mounted on the lower surface of the tube sheet by using the operation rod. (2) In the state of (1) above, the camera can be rotated to inspect the inside of the water chamber and the nozzle. (3) Since the camera has a water drop removing and anti-fog mechanism, the inside of the water chamber can be inspected in a high temperature, high humidity and high radiation atmosphere, and the labor of the worker and the radiation dose equivalent can be reduced.
【図１】本発明の実施例の全体を示す正面図である。FIG. 1 is a front view showing an entire embodiment of the present invention.
【図２】支持台及びカメラユニットの管板への取付け状
態を示す図である。FIG. 2 is a diagram showing a mounting state of a support base and a camera unit on a tube plate.
【図３】逆止弁機構と操作棒の接続状態を示す図であ
る。FIG. 3 is a view showing a connection state of a check valve mechanism and an operating rod.
【図４】図３のＰ−Ｐ矢視図である。FIG. 4 is a view taken along the line P-P in FIG.
【図５】本発明によるカメラ装置を蒸気発生器水室内に
挿入する状態を示す図である。FIG. 5 is a view showing a state in which the camera device according to the present invention is inserted into a steam generator water chamber.
【図６】カメラ装置を管板に取付けた状態を示す図であ
る。FIG. 6 is a view showing a state in which the camera device is attached to the tube sheet.
【図７】カメラ装置から操作棒を取外し、点検を開始し
た状態を示す図である。FIG. 7 is a diagram showing a state in which an operating rod is removed from the camera device and inspection is started.
【図８】点検を終了し、カメラ装置を蒸気発生器水室か
ら取出す状態を示す図である。FIG. 8 is a view showing a state in which the camera device is taken out of the steam generator water chamber after the inspection is completed.
１ カメラユニット ２ 支持台 ５ 操作棒 ７ 水室 ９ 管板 1 camera unit 2 support 5 operating rod 7 water chamber 9 tube plate
Claims (1)
される支持台と、前記支持台にパンニング及びチルチン
グ可能に取付けられた照明付きカメラと、前記カメラの
レンズに対する水滴除去及び曇り止め機構と、前記支持
台に着脱可能に接続され且つ同支持台の管板に対する着
脱を操作する操作棒とを具えたことを特徴とする蒸気発
生器水室内異物点検用カメラ装置。1. A support base removably fixed to a tube plate of a steam generator water chamber, an illuminated camera mounted on the support base so as to be capable of panning and tilting, and water drop removal and fog on the lens of the camera. A camera device for inspecting foreign matters in a steam generator water chamber, comprising: a stop mechanism; and an operation rod detachably connected to the support base and operated to attach and detach the support base to a tube plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4074343A JPH05281391A (en) | 1992-03-30 | 1992-03-30 | Camera device for inspecting foreign material in steam generator water room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4074343A JPH05281391A (en) | 1992-03-30 | 1992-03-30 | Camera device for inspecting foreign material in steam generator water room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05281391A true JPH05281391A (en) | 1993-10-29 |
Family
ID=13544386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4074343A Withdrawn JPH05281391A (en) | 1992-03-30 | 1992-03-30 | Camera device for inspecting foreign material in steam generator water room |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05281391A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100450064B1 (en) * | 2002-04-08 | 2004-09-24 | 한국수력원자력 주식회사 | Visual inspection and radiation dose measurement method of steam generator using miniature CCD camera system |
-
1992
- 1992-03-30 JP JP4074343A patent/JPH05281391A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100450064B1 (en) * | 2002-04-08 | 2004-09-24 | 한국수력원자력 주식회사 | Visual inspection and radiation dose measurement method of steam generator using miniature CCD camera system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990608 |