JPH0926107A - Cleaning device of steam generator - Google Patents
Cleaning device of steam generatorInfo
- Publication number
- JPH0926107A JPH0926107A JP17604495A JP17604495A JPH0926107A JP H0926107 A JPH0926107 A JP H0926107A JP 17604495 A JP17604495 A JP 17604495A JP 17604495 A JP17604495 A JP 17604495A JP H0926107 A JPH0926107 A JP H0926107A
- Authority
- JP
- Japan
- Prior art keywords
- guide mechanism
- cleaning device
- steam generator
- heat transfer
- cleaning
- 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.)
- Granted
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
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/483—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers specially adapted for nuclear steam generators
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、原子プラント等に
使用される蒸気発生器の伝熱管及び伝熱管支持板の洗浄
に利用される洗浄装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device used for cleaning a heat transfer tube and a heat transfer tube supporting plate of a steam generator used in an atomic plant or the like.
【０００２】[0002]
【従来の技術】図５に示すように、原子プラントに於け
る蒸気発生器２内の伝熱管支持板４の管支持部には隙間
（ＢＥＣ穴）がある。そのため、その隙間に塵埃２７が
滞留し、長期間放置することにより伝熱管３を損傷させ
る原因になる恐れがある。2. Description of the Related Art As shown in FIG. 5, there is a gap (BEC hole) in a tube support portion of a heat transfer tube support plate 4 in a steam generator 2 in an atomic plant. Therefore, the dust 27 may remain in the gap and may cause damage to the heat transfer tube 3 if left for a long time.
【０００３】又、伝熱管３表面の塵埃（スケール）２７
が伝熱効率の低下をもたらすため、塵埃２７を除去する
必要があるが、現在まで除去されておらず対応策が求め
られている。In addition, dust (scale) 27 on the surface of the heat transfer tube 3
However, the dust 27 needs to be removed because it reduces the heat transfer efficiency, but it has not been removed until now, and a countermeasure is required.
【０００４】[0004]
【発明が解決しようとする課題】蒸気発生器内の伝熱管
支持板の管支持部及び伝熱管蒸気発生器の塵埃除去に
は、次のような問題点がある。 （１）蒸気発生器内部の作業であるため、作業員が放射
線を受けないようにするという管理上の制限がある。 （２）蒸気発生器内の伝熱管支持板は、一定の間隔で多
数配置されていること、および、伝熱管は約３４００本
あり、１０ｍ前後の長さのＵ字管である為、相当広い範
囲を洗浄する必要がある。 （３）洗浄装置を挿入するためのハンドホール（検査用
穴）の大きさは、穴の直径で１１３ｍｍが限度である。 （４）洗浄状態が確認できない。 などの問題がある。本発明はこれらの問題を解決するこ
とができる装置を提供することを目的とする。DISCLOSURE OF THE INVENTION Problems to be solved in removing dust from the heat transfer tube steam generator and the tube support portion of the heat transfer tube support plate in the steam generator. (1) Since it is the work inside the steam generator, there is a management limitation that the worker is not exposed to radiation. (2) A large number of heat transfer tube support plates in the steam generator are arranged at regular intervals, and about 3400 heat transfer tubes are U-shaped tubes with a length of about 10 m, so they are considerably wide. The area needs to be washed. (3) The size of the handhole (inspection hole) for inserting the cleaning device is 113 mm in diameter of the hole. (4) The cleaning state cannot be confirmed. There is such a problem. An object of the present invention is to provide a device that can solve these problems.
【０００５】[0005]
［第１の手段］本発明に係る蒸気発生器の洗浄装置は、
蒸気発生器の伝熱管及び管支持部の洗浄装置において、
（Ａ）洗浄装置は、挿入機構と案内機構を具備し、
（Ｂ）前記挿入機構は、手前側に駆動装置を有するとと
もに、先端側に固定板を有し、第２ジャッキの作動で固
定するとともに、手前側と先端側の中間に受け板及び第
１ジャッキを設けて、前記案内機構を上方へ９０度方向
転換させる機構とし、（Ｃ）前記案内機構は、曲面が移
動できるように分割され、各案内機構には、伝熱管をガ
イドするレバーを設け、（Ｄ）前記レバーは、前後に転
倒する機能を備え、（Ｅ）前記案内機構の背面には、高
圧ホース及び電線ケーブルを取り付け可能とし、（Ｆ）
前記案内機構の先端部には、モータとウォームギアとウ
ォームホイールと噴射ノズルを有する洗浄部本体を設
け、（Ｇ）前記噴射ノズルは、１８０度回転できる機構
とし、（Ｈ）前記洗浄装置は、蒸気発生器のハンドホー
ルから挿入されることを特徴とする。 ［第２の手段］本発明に係る蒸気発生器の洗浄装置は、
第１の手段において、案内機構の先端部に設けた洗浄部
本体には、位置確認用ビデオプローブと噴射状況確認用
ビデオプローブを具備することを特徴とする。 ［第３の手段］本発明に係る蒸気発生器の洗浄装置は、
第１または第２の手段において、挿入機構及び案内機構
の作動は遠隔操作できることを特徴とする。[First Means] A steam generator cleaning device according to the present invention comprises:
In the cleaning device for heat transfer tubes and tube supports of steam generators,
(A) The cleaning device includes an insertion mechanism and a guide mechanism,
(B) The insertion mechanism has a drive device on the front side and a fixing plate on the front end side, which is fixed by the operation of the second jack, and the receiving plate and the first jack are provided between the front side and the front end side. Is provided to make the guide mechanism turn 90 degrees upward, and (C) the guide mechanism is divided so that the curved surface can move, and each guide mechanism is provided with a lever for guiding the heat transfer tube, (D) The lever has a function of tipping back and forth, (E) a high pressure hose and an electric wire cable can be attached to the back surface of the guide mechanism, and (F)
A cleaning unit body having a motor, a worm gear, a worm wheel, and an injection nozzle is provided at the tip of the guide mechanism, (G) the injection nozzle is a mechanism capable of rotating 180 degrees, and (H) the cleaning device is a steam generator. It is characterized in that it is inserted from the handhole of the generator. [Second Means] A cleaning device for a steam generator according to the present invention comprises:
In the first means, the cleaning unit main body provided at the tip of the guide mechanism is equipped with a position confirmation video probe and an injection status confirmation video probe. [Third Means] A cleaning device for a steam generator according to the present invention comprises:
In the first or second means, the operation of the insertion mechanism and the guide mechanism can be remotely controlled.
【０００６】従って、次のように作用する。本装置は、
限定されたハンドホール（検査用穴）から挿入し、挿入
機構は下部のフロースロット穴に固定し、案内機構は駆
動装置から送り出され、９０度上方へ方向転換され、伝
熱管をガイドとして上・下に移動することができる。Accordingly, the following operation is performed. This device is
It is inserted from a limited hand hole (hole for inspection), the insertion mechanism is fixed to the lower flow slot hole, the guide mechanism is sent out from the drive device, turned 90 degrees upward, and the heat transfer tube is used as a guide You can move down.
【０００７】そして、案内機構に取付けられ高圧ホース
及び電線ケーブルは、先端部の噴射ノズルにより洗浄状
況をビデオロープで確認しながら、高圧水を噴射させ、
伝熱管及び、伝熱管支持板を洗浄することができる。そ
してこれらの操作は、すべて遠隔操作で行なうことがで
きる。Then, the high-pressure hose and the electric wire cable attached to the guide mechanism jet high-pressure water while confirming the washing condition with a video rope by the jet nozzle at the tip end,
The heat transfer tube and the heat transfer tube support plate can be washed. And all of these operations can be performed remotely.
【０００８】[0008]
【発明の実施の形態】本発明の第１の実施の形態を図１
〜図４に示す。 （伝熱管支持板の洗浄装置）図１は伝熱管の支持板洗浄
装置の蒸気発生器への設置図、図２は伝熱管の伝熱管の
支持板の洗浄装置の斜視図、図３は本発明装置の方向変
換部の詳細図、図４は本発明装置の先端部詳細図を示
す。FIG. 1 shows a first embodiment of the present invention.
4 to FIG. (Cleaning Device for Heat Transfer Tube Support Plate) FIG. 1 is an installation view of the cleaning plate for the heat transfer tube on the steam generator, FIG. 2 is a perspective view of the cleaning device for the support plate for the heat transfer tube, and FIG. FIG. 4 is a detailed view of the direction changing portion of the invention device, and FIG. 4 is a detailed view of the tip portion of the invention device.
【０００９】図１において、伝熱管及び支持板の洗浄装
置１は、蒸気発生器２のハンドホール（検査用穴）５か
ら挿入し、上方へ９０度方向転換させて、伝熱管３をガ
イドにして、上・下に移動できる。In FIG. 1, a cleaning device 1 for a heat transfer tube and a supporting plate is inserted through a handhole (inspection hole) 5 of a steam generator 2 and turned upward by 90 degrees so that the heat transfer tube 3 serves as a guide. You can move up and down.
【００１０】そして蒸気発生器２内において、一定の間
隔で配置された伝熱管の支持板４を、本発明装置の背面
にある高圧ホースの先端の噴射ノズルから高圧水を噴射
させ、伝熱管の支持板４の管支持板を洗浄する。Then, in the steam generator 2, the support plates 4 of the heat transfer tubes arranged at regular intervals are used to inject high-pressure water from the injection nozzle at the tip of the high-pressure hose on the rear surface of the device of the present invention. The tube support plate of the support plate 4 is washed.
【００１１】伝熱管及び支持板の洗浄装置１は、挿入機
構１１と案内機構１０から構成される。図２及び図３に
示すように、挿入機構１１は、手前側に駆動装置６を設
けるとともに、先端側に固定板１２を設け、第２ジャッ
キ１９の作動で固定させる。The heat transfer tube and support plate cleaning apparatus 1 comprises an insertion mechanism 11 and a guide mechanism 10. As shown in FIGS. 2 and 3, the insertion mechanism 11 is provided with the drive device 6 on the front side and the fixing plate 12 on the distal end side, and is fixed by the operation of the second jack 19.
【００１２】そして、中間には、受け板１３及び第１ジ
ャッキ１４を設け、第１ジャッキ１４の作動で受け板１
３を上方に９０度方向変換させる構造にしている。案内
機構１０は、曲面が移動できるように、短冊型に分割さ
れている。A receiving plate 13 and a first jack 14 are provided in the middle, and the receiving plate 1 is operated by the operation of the first jack 14.
3 has a structure in which the direction is changed upward by 90 degrees. The guide mechanism 10 is divided into strips so that the curved surface can move.
【００１３】そして、各々の分割板には両側に伝熱管を
挟んで上・下できるレバー１５を設け、該レバー１５の
前後に圧縮バネ１６を取付け、前後に転倒可能にしてい
る。そして案内機構１０の背面には、高圧ホース及び電
線ケーブル８を取付け、押え板９により固定される構造
にしている。Each division plate is provided with a lever 15 which can be moved up and down by sandwiching a heat transfer tube on both sides, and compression springs 16 are attached to the front and rear of the lever 15 so as to be able to fall back and forth. A high-pressure hose and an electric wire cable 8 are attached to the back surface of the guide mechanism 10 and fixed by a holding plate 9.
【００１４】図４において、挿入機構１１の先端部には
減速機付モータ２１とウォームギヤ２２とウォームホイ
ール２３と噴射ノズル２４から成り立った洗浄部本体２
０を設け、モータ２１の作動により噴射ノズル２４が１
８０度回転できる機構にしている。In FIG. 4, the cleaning unit main body 2 is composed of a motor 21 with a reduction gear, a worm gear 22, a worm wheel 23 and an injection nozzle 24 at the tip of the insertion mechanism 11.
0, the injection nozzle 24 is set to 1 by the operation of the motor 21.
It has a mechanism that can rotate 80 degrees.
【００１５】これらはすべて遠隔操作で行なわれる。そ
して、洗浄位置及び洗浄状況を確認できるビデオプロー
ブ２５、２６を設けている。 （伝熱管の洗浄）複数の伝熱管支持板部の途中で、噴射
ノズルから高圧水を噴射させることにより、伝熱管表面
のスケール（塵埃）２７を洗浄する。All of these are done remotely. In addition, video probes 25 and 26 that can confirm the cleaning position and the cleaning status are provided. (Washing of the heat transfer tube) The scale (dust) 27 on the surface of the heat transfer tube is washed by injecting high-pressure water from the injection nozzle in the middle of the plurality of heat transfer tube support plate portions.
【００１６】[0016]
【発明の効果】本発明は前述のように構成されているの
で、以下に記載するような効果を奏する。 （１）本発明に係る洗浄装置によれば、本装置の案内機
構に、高圧ホースや電線ケーブルを取付け、蒸気発生器
内の伝熱管支持板の管支持部の隙間（ＢＥＣ穴）及び伝
熱管表面に滞留する塵埃を洗浄することができる。 （２）そのため、伝熱管の腐食を防止でき、放射線の発
生を未然の防ぐことができる。又、伝熱効率向上を図る
ことができる。Since the present invention is constructed as described above, it has the following effects. (1) According to the cleaning device of the present invention, a high-pressure hose or an electric wire cable is attached to the guide mechanism of the present device, and a gap (BEC hole) in a tube support portion of a heat transfer tube support plate in a steam generator and a heat transfer tube. Dust accumulated on the surface can be washed. (2) Therefore, it is possible to prevent corrosion of the heat transfer tube and prevent radiation from occurring. Also, the heat transfer efficiency can be improved.
【図１】本発明に係る装置の装着図。FIG. 1 is a mounting view of a device according to the present invention.
【図２】本発明に係る装置の斜視図。FIG. 2 is a perspective view of a device according to the present invention.
【図３】本発明に係る装置の方向変換部の詳細図。FIG. 3 is a detailed view of a direction changing portion of the device according to the present invention.
【図４】本発明に係る装置の先端部の詳細図。FIG. 4 is a detailed view of the tip of the device according to the present invention.
【図５】本発明に係る装置の伝熱管支持板の拡大図。FIG. 5 is an enlarged view of a heat transfer tube support plate of the device according to the present invention.
１…伝熱管及び支持板の洗浄装置、 ２…蒸気発生器、 ３…伝熱管、 ４…伝熱管支持板、 ５…ハンドホール、 ６…駆動装置、 ７…フロースロット、 ８…電線ケーブル、 ９…押え板、 １０…案内機構、 １１…挿入機構、 １２…固定板、 １３…受け板、 １４…第１ジャッキ、 １５…レバー、 １６…前圧縮バネ、 １７…後圧縮バネ、 １８…ノズル、 １９…第２ジャッキ、 ２０…洗浄部本体、 ２１…減速機モータ、 ２２…ウォームギヤ、 ２３…ウォームホイール、 ２４…ノズル、 ２５…位置確認用ビデオプローブ、 ２６…噴射状況確認用ビデオプローブ、 ２７…塵埃。 DESCRIPTION OF SYMBOLS 1 ... Heat transfer pipe and support plate cleaning device, 2 ... Steam generator, 3 ... Heat transfer pipe, 4 ... Heat transfer pipe support plate, 5 ... Hand hole, 6 ... Drive device, 7 ... Flow slot, 8 ... Electric wire cable, 9 ... presser plate, 10 ... guide mechanism, 11 ... insertion mechanism, 12 ... fixed plate, 13 ... receiving plate, 14 ... first jack, 15 ... lever, 16 ... front compression spring, 17 ... rear compression spring, 18 ... nozzle, 19 ... 2nd jack, 20 ... Cleaning part main body, 21 ... Reducer motor, 22 ... Worm gear, 23 ... Worm wheel, 24 ... Nozzle, 25 ... Position confirmation video probe, 26 ... Injection condition confirmation video probe, 27 ... Dust.
Claims (3)
装置において、（Ａ）洗浄装置（１）は、挿入機構（１
１）と案内機構（１０）を具備し、（Ｂ）前記挿入機構
（１１）は、手前側に駆動装置（６）を有するととも
に、先端側に固定板（１２）を有し、第２ジャッキ（１
９）の作動で固定するとともに、手前側と先端側の中間
に受け板（１３）及び第１ジャッキ（１４）を設けて、
前記案内機構（１０）を上方へ９０度方向転換させる機
構とし、（Ｃ）前記案内機構（１０）は、曲面が移動で
きるように分割され、各案内機構には、伝熱管（３）を
ガイドするレバー（１５）を設け、（Ｄ）前記レバー
（１５）は、前後に転倒する機能を備え、（Ｅ）前記案
内機構（１０）の背面には、高圧ホース及び電線ケーブ
ル（８）を取り付け可能とし、（Ｆ）前記案内機構（１
０）の先端部には、モータ（２１）とウォームギア（２
２）とウォームホイール（２３）と噴射ノズル（２４）
を有する洗浄部本体（２０）を設け、（Ｇ）前記噴射ノ
ズル（２４）は、１８０度回転できる機構とし、（Ｈ）
前記洗浄装置（１）は、蒸気発生器（２）のハンドホー
ル（５）から挿入されることを特徴とする蒸気発生器ま
洗浄装置。1. A cleaning device for a heat transfer tube and a tube supporting portion of a steam generator, wherein (A) the cleaning device (1) comprises an insertion mechanism (1).
1) and a guide mechanism (10), (B) the insertion mechanism (11) has a drive device (6) on the front side and a fixing plate (12) on the tip side, and a second jack. (1
9) is fixed by the operation, the receiving plate (13) and the first jack (14) are provided between the front side and the tip side,
(C) The guide mechanism (10) is divided so that the curved surface can move, and the heat transfer tube (3) is guided to each guide mechanism. (D) The lever (15) has a function of tipping back and forth, and (E) a high pressure hose and an electric wire cable (8) are attached to the back surface of the guide mechanism (10). (F) The guide mechanism (1
0) has a motor (21) and a worm gear (2
2), worm wheel (23) and injection nozzle (24)
(G) The jet nozzle (24) has a mechanism capable of rotating 180 degrees, and (H)
The said cleaning device (1) is inserted from the handhole (5) of a steam generator (2), The steam generator or cleaning device characterized by the above-mentioned.
部本体（２０）には、位置確認用ビデオプローブ（２
５）と噴射状況確認用ビデオプローブ（２６）を具備す
ることを特徴とする請求項１記載の蒸気発生器の洗浄装
置。2. A position confirmation video probe (2) is attached to a cleaning unit main body (20) provided at the tip of the guide mechanism (10).
5. The steam generator cleaning apparatus according to claim 1, further comprising: 5) and a video probe (26) for confirming the injection state.
の作動は、遠隔操作できることを特徴とする請求項１ま
たは請求項２記載の蒸気発生器の洗浄装置。3. An insertion mechanism (11) and a guide mechanism (10).
3. The steam generator cleaning device according to claim 1 or 2, wherein the operation can be remotely controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7176044A JP2930538B2 (en) | 1995-07-12 | 1995-07-12 | Steam generator cleaning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7176044A JP2930538B2 (en) | 1995-07-12 | 1995-07-12 | Steam generator cleaning equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0926107A true JPH0926107A (en) | 1997-01-28 |
| JP2930538B2 JP2930538B2 (en) | 1999-08-03 |
Family
ID=16006745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7176044A Expired - Fee Related JP2930538B2 (en) | 1995-07-12 | 1995-07-12 | Steam generator cleaning equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2930538B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1021693A2 (en) * | 1996-10-11 | 2000-07-26 | Foster-Miller, Inc. | An upper bundle steam generator cleaning, inspection, and repair system |
| WO2001057462A1 (en) * | 1998-08-06 | 2001-08-09 | Mitsubishi Heavy Industries, Ltd. | Descaling device for steam generator |
| US6513462B1 (en) | 1998-08-06 | 2003-02-04 | Mitsubishi Heavy Industries, Ltd. | Descaling device for steam generator |
| US6543392B1 (en) | 1994-05-06 | 2003-04-08 | Foster-Miller, Inc. | Deployment system for an upper bundle steam generator cleaning/inspection device |
| US6672257B1 (en) | 1994-05-06 | 2004-01-06 | Foster-Miller, Inc. | Upper bundle steam generator cleaning system and method |
| KR100597533B1 (en) * | 2003-12-24 | 2006-07-05 | 한전기공주식회사 | 2td pipe inspection of steam generator |
| KR100829264B1 (en) * | 2006-08-14 | 2008-05-13 | 한전케이피에스 주식회사 | A tube support plate of the steam generator and tube washing system. |
| KR101238948B1 (en) * | 2010-09-29 | 2013-03-04 | 한국수력원자력 주식회사 | Ultrasonic waveguide device approaching to narrow space |
| CN109540908A (en) * | 2018-12-21 | 2019-03-29 | 核动力运行研究所 | Steam generator the first support plate video check steering tool and video check method |
-
1995
- 1995-07-12 JP JP7176044A patent/JP2930538B2/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE38542E1 (en) | 1994-05-06 | 2004-07-06 | Foster-Miller, Inc. | Upper bundle steam generator cleaning system and method |
| US6820575B2 (en) | 1994-05-06 | 2004-11-23 | Foster-Miller, Inc. | Upper bundle steam generator cleaning, inspection, and repair system |
| US6543392B1 (en) | 1994-05-06 | 2003-04-08 | Foster-Miller, Inc. | Deployment system for an upper bundle steam generator cleaning/inspection device |
| US6672257B1 (en) | 1994-05-06 | 2004-01-06 | Foster-Miller, Inc. | Upper bundle steam generator cleaning system and method |
| EP1021693A4 (en) * | 1996-10-11 | 2002-07-10 | Foster Miller Inc | An upper bundle steam generator cleaning, inspection, and repair system |
| EP1021693A2 (en) * | 1996-10-11 | 2000-07-26 | Foster-Miller, Inc. | An upper bundle steam generator cleaning, inspection, and repair system |
| US6513462B1 (en) | 1998-08-06 | 2003-02-04 | Mitsubishi Heavy Industries, Ltd. | Descaling device for steam generator |
| WO2001057462A1 (en) * | 1998-08-06 | 2001-08-09 | Mitsubishi Heavy Industries, Ltd. | Descaling device for steam generator |
| KR100597533B1 (en) * | 2003-12-24 | 2006-07-05 | 한전기공주식회사 | 2td pipe inspection of steam generator |
| KR100829264B1 (en) * | 2006-08-14 | 2008-05-13 | 한전케이피에스 주식회사 | A tube support plate of the steam generator and tube washing system. |
| KR101238948B1 (en) * | 2010-09-29 | 2013-03-04 | 한국수력원자력 주식회사 | Ultrasonic waveguide device approaching to narrow space |
| CN109540908A (en) * | 2018-12-21 | 2019-03-29 | 核动力运行研究所 | Steam generator the first support plate video check steering tool and video check method |
| CN109540908B (en) * | 2018-12-21 | 2024-03-19 | 核动力运行研究所 | Video inspection guiding tool and video inspection method for first supporting plate of steam generator |
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| Publication number | Publication date |
|---|---|
| JP2930538B2 (en) | 1999-08-03 |
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