JP2930538B2 - Steam generator cleaning equipment - Google Patents
Steam generator cleaning equipmentInfo
- Publication number
- JP2930538B2 JP2930538B2 JP7176044A JP17604495A JP2930538B2 JP 2930538 B2 JP2930538 B2 JP 2930538B2 JP 7176044 A JP7176044 A JP 7176044A JP 17604495 A JP17604495 A JP 17604495A JP 2930538 B2 JP2930538 B2 JP 2930538B2
- Authority
- JP
- Japan
- Prior art keywords
- steam generator
- guide mechanism
- heat transfer
- transfer tube
- 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.)
- Expired - Fee Related
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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning In General (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
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 apparatus used for cleaning a heat transfer tube and a heat transfer tube support plate of a steam generator used in a nuclear 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 a nuclear plant. Therefore, the dust 27 may stay in the gap, and may cause the heat transfer tube 3 to be damaged 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。The dust (scale) 27 on the surface of the heat transfer tube 3
However, it is necessary to remove the dust 27 because the heat transfer efficiency is reduced.
【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。There are the following problems in removing the dust from the tube support of the heat transfer tube support plate in the steam generator and the heat transfer tube steam generator. (1) Since the work is performed inside the steam generator, there is a management restriction that the worker should not receive radiation. (2) Since a large number of heat transfer tube support plates in the steam generator are arranged at regular intervals, and the number of heat transfer tubes is about 3400 and a U-shaped tube having a length of about 10 m, it is considerably wide. The area needs to be cleaned. (3) The size of the handhole (inspection hole) for inserting the cleaning device is limited to 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 apparatus according to the present invention comprises:
In a steam generator heat transfer tube and tube support cleaning device,
(A) The cleaning device includes an insertion mechanism and a guide mechanism,
(B) The insertion mechanism has a driving device on the near side, a fixing plate on the front end side, and is fixed by the operation of the second jack, and a receiving plate and a first jack are provided between the front side and the front end side. (C) the guide mechanism is divided so that a curved surface can be moved, and each guide mechanism is provided with a lever for guiding a heat transfer tube; (D) the lever has a function of tipping back and forth, (E) a high-pressure hose and an electric cable can be attached to the back of the guide mechanism, and (F)
A cleaning unit main body having a motor, a worm gear, a worm wheel, and an injection nozzle is provided at a distal end of the guide mechanism. (G) The injection nozzle is a mechanism that can be rotated by 180 degrees. It is characterized in that it is inserted from the handhole of the generator. [Second Means] A steam generator cleaning apparatus according to the present invention comprises:
The first means is characterized in that the cleaning unit main body provided at the distal end of the guide mechanism includes a video probe for position confirmation and a video probe for ejection status confirmation. [Third Means] A steam generator cleaning apparatus 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
Inserted from a limited hand hole (inspection hole), the insertion mechanism is fixed to the lower flow slot hole, the guide mechanism is sent out from the driving device, turned 90 degrees upward, using the heat transfer tube 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。The high-pressure hose and the electric cable attached to the guide mechanism are sprayed with high-pressure water while checking the washing condition with a video rope using a jet nozzle at the tip end.
The heat transfer tube and the heat transfer tube support plate can be cleaned. All of these operations can be performed by remote control.
【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 a view showing the installation of the heat transfer tube support plate cleaning device on the steam generator, FIG. 2 is a perspective view of the heat transfer tube support plate cleaning device for the heat transfer tube, and FIG. FIG. 4 is a detailed view of the direction changing unit of the apparatus of the present invention, and FIG.
【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 heat transfer tube and a support plate cleaning device 1 is inserted through a hand hole (inspection hole) 5 of a steam generator 2 and turned upward by 90 degrees to use the heat transfer tube 3 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。In the steam generator 2, high pressure water is jetted from a jet nozzle at the tip of a high pressure hose at the back of the apparatus of the present invention, by using a support plate 4 of the heat exchanger tubes arranged at regular intervals. 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 includes an insertion mechanism 11 and a guide mechanism 10. As shown in FIGS. 2 and 3, the insertion mechanism 11 has the driving device 6 provided on the near side and the fixed plate 12 provided on the tip 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 is turned upward by 90 degrees. The guide mechanism 10 is divided into strips so that a curved surface can be moved.
【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 split plate is provided on both sides with a lever 15 which can be moved up and down with a heat transfer tube interposed therebetween, and a compression spring 16 is 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 cable 8 are attached to the back of the guide mechanism 10, and are 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, a cleaning unit main body 2 comprising a motor 21 with a speed reducer, a worm gear 22, a worm wheel 23, and an injection nozzle 24 is provided at the tip of the insertion mechanism 11.
0, and the injection nozzle 24 is set to 1 by the operation of the motor 21.
The mechanism can be rotated by 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 performed remotely. Then, video probes 25 and 26 for checking the cleaning position and the cleaning status are provided. (Washing of Heat Transfer Tube) The scale (dust) 27 on the surface of the heat transfer tube is washed by injecting high-pressure water from an 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 configured 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 cable is attached to the guide mechanism of the present device, and the gap (BEC hole) of the tube support portion of the heat transfer tube support plate in the steam generator and the heat transfer tube are provided. Dust staying on the surface can be cleaned. (2) Therefore, corrosion of the heat transfer tube can be prevented, and generation of radiation can be prevented. Further, 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 an apparatus 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 unit 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 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.
【符号の説明】 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 Signs] 1 ... Cleaning device for heat transfer tube and support plate, 2 ... Steam generator, 3 ... Heat transfer tube, 4 ... Heat transfer tube support plate, 5 ... Handhole, 6 ... Drive device, 7 ... Flow slot, 8 ... wire cable, 9 ... holding plate, 10 ... guide mechanism, 11 ... insertion mechanism, 12 ... fixing plate, 13 ... receiving plate, 14 ... first jack, 15 ... lever, 16 ... front compression spring, 17 ... rear compression spring , 18 ... Nozzle, 19 ... Second jack, 20 ... Washing unit body, 21 ... Reducer motor, 22 ... Worm gear, 23 ... Warm wheel, 24 ... Nozzle, 25 ... Video probe for position confirmation, 26 ... Video probe, 27 ... dust.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F22B 37/48 F28G 15/04 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) F22B 37/48 F28G 15/04
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) a cleaning device (1) includes an insertion mechanism (1).
1) and a guide mechanism (10). (B) The insertion mechanism (11) has a driving device (6) on the near side, a fixing plate (12) on the tip side, and a second jack. (1
In addition to fixing by the operation of 9), a receiving plate (13) and a first jack (14) are provided between the near side and the distal side,
(C) The guide mechanism (10) is divided so that a curved surface can move, and each guide mechanism guides the heat transfer tube (3). (D) The lever (15) has a function of tipping back and forth, and (E) a high-pressure hose and an electric cable (8) are attached to the back of the guide mechanism (10). (F) the guide mechanism (1)
0), the motor (21) and the worm gear (2)
2), worm wheel (23) and injection nozzle (24)
(G) the jet nozzle (24) has a mechanism capable of rotating by 180 degrees, and (H)
The cleaning device (1) is inserted through a handhole (5) of a steam generator (2).
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 video probe (2) for position confirmation is provided on a cleaning unit body (20) provided at a distal end portion of a guide mechanism (10).
5. The apparatus for cleaning a steam generator according to claim 1, further comprising 5) and a video probe for checking an 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 apparatus according to claim 1, wherein the operation of the steam generator 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 JPH0926107A (en) | 1997-01-28 |
| JP2930538B2 true 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) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5564371A (en) | 1994-05-06 | 1996-10-15 | Foster Miller, Inc. | Upper bundle steam generator cleaning system and method |
| 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 |
| JP3986172B2 (en) | 1998-08-06 | 2007-10-03 | 三菱重工業株式会社 | Descaler for steam generator |
| CN1130545C (en) * | 2000-02-03 | 2003-12-10 | 三菱重工业株式会社 | 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 |
| 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 |
| JP7360990B2 (en) * | 2020-04-24 | 2023-10-13 | 三菱重工業株式会社 | Steam generator inspection device and steam generator inspection method |
-
1995
- 1995-07-12 JP JP7176044A patent/JP2930538B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0926107A (en) | 1997-01-28 |
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