JPH0435749Y2 - - Google Patents
Info
- Publication number
- JPH0435749Y2 JPH0435749Y2 JP1985060281U JP6028185U JPH0435749Y2 JP H0435749 Y2 JPH0435749 Y2 JP H0435749Y2 JP 1985060281 U JP1985060281 U JP 1985060281U JP 6028185 U JP6028185 U JP 6028185U JP H0435749 Y2 JPH0435749 Y2 JP H0435749Y2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- support
- rubber
- drain pot
- stopper assembly
- 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
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は管の途中に設けた蓋状体取付面を有す
る開口部から管内に挿入されて管内を閉塞する管
の閉塞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 tube closing device that is inserted into a tube through an opening provided in the middle of the tube and has a lid-like mounting surface to close the inside of the tube. .
（従来の技術）
加圧水型原子力プラントでは、蒸気発生器にシ
エルアンドドチユーブ型熱交換器が使用されてい
る。このシエルアンドドチユーブ型熱交換器で
は、高温の原子炉１次冷却水が細い多数の伝熱管
中を管内流体として流れる。一方、低温の２次側
水が上記各伝熱管外の２次側水室内を管外流体と
して流れて、同低温の２次側水が上記高温の原子
炉１次冷却水により加熱され、沸騰して、蒸気に
なる。(Prior Art) In a pressurized water nuclear power plant, a shell and detube heat exchanger is used in a steam generator. In this shell-and-tube heat exchanger, high-temperature reactor primary cooling water flows through a large number of thin heat transfer tubes as a fluid inside the tubes. On the other hand, the low-temperature secondary water flows as an extra-tube fluid in the secondary water chamber outside each of the heat transfer tubes, and the low-temperature secondary water is heated by the high-temperature reactor primary cooling water and boils. and turns into steam.
（考案が解決しようとする問題点）
前記シエルアンドチユーブ型熱交換器では、定
期検査時に各伝熱管内及び２次側水室内を水抜き
して、大気に解放し、点検・洗浄等を実施する
が、特に２次側水室内については、長い期間大気
に開放しておくと、空気に触れて酸化、腐食する
ので、好ましくなく、可能な限り大気への開放期
間を短くする必要がある。(Problems to be solved by the invention) In the shell-and-tube heat exchanger, water is drained from inside each heat transfer tube and the secondary water chamber during periodic inspections, and the water is released to the atmosphere for inspection and cleaning. However, especially with respect to the secondary water chamber, if it is left open to the atmosphere for a long period of time, it will be exposed to air and oxidize and corrode, which is undesirable, so it is necessary to shorten the period of opening to the atmosphere as much as possible.
本考案は前記の要求を充足するもので、管の途
中に設けた蓋状体取付面を有する開口部から管内
に挿入されて、管内及びドレンポツト部を閉塞す
る管の閉塞装置において、前記管内に挿入・設置
するレールと、管内閉塞用止栓アツセンブリと、
前記開口部から前記管内に挿入して外端部を前記
蓋状体取付面に着脱自在に固定する支持フレーム
と、同支持フレームを介して上記管内閉塞用止栓
アツセンブリを管内閉塞位置に支持する支持部材
とを有し、上記管内閉塞用止栓アツセンブリを、
管内閉塞用シールゴム受と同シールゴム受の外周
部に取付けたシールゴムとシールゴム押え板と同
シールゴム押え板を介して上記シールゴムを管の
内周面に圧着する押え板用締め付けナツトと上記
レール上を移動する移動支持体とにより構成し、
ドレンポツト部閉塞用止栓アツセンブリを、管の
ドレンポツト部内に挿入する支持プラグと同支持
プラグの周りに配設した支持プラグ用ゴムと上記
支持プラグを介して同支持プラグ用ゴムを上記ド
レンポツト部の内周面に圧着する支持プラグ用締
め付けナツトとにより構成したことを特徴とする
管の閉塞装置に係わり、その目的とする処は、管
内を大気に対し気密的に閉塞できて、管内の酸
化、腐食を防止できる管の閉塞装置を供する点に
ある。 The present invention satisfies the above-mentioned requirements, and is a pipe closing device that is inserted into a pipe through an opening having a lid-like body mounting surface provided in the middle of the pipe to close the pipe and the drain pot. A rail to be inserted and installed, a stopper assembly for occluding the pipe,
A support frame that is inserted into the pipe through the opening and removably fixes the outer end to the lid attachment surface, and supports the pipe closure stopper assembly in the pipe closure position via the support frame. a support member, and the stopper assembly for occluding the pipe;
A sealing rubber receiver for blocking the inside of the pipe, a sealing rubber attached to the outer periphery of the sealing rubber receiver, a sealing rubber holding plate, a tightening nut for the holding plate that presses the sealing rubber to the inner peripheral surface of the pipe via the sealing rubber holding plate, and moving on the above rail. and a moving support body,
The stopper assembly for closing the drain pot section is inserted into the drain pot section of the pipe through a support plug inserted into the drain pot section, a support plug rubber arranged around the support plug, and the support plug rubber placed inside the drain pot section. This relates to a pipe closing device characterized by comprising a support plug tightening nut that is crimped onto the circumferential surface of the pipe. The object of the present invention is to provide a tube occlusion device that can prevent this.
（問題点を解決するための手段）
本考案の管の閉塞装置は前記のように構成され
ており、支持プラグと支持プラグ用ゴムとをドレ
ンポツト内に挿入して、支持プラグ用締め付けナ
ツトを締め付け、支持プラグ用ゴムをドレンポツ
ト部の内周面に圧着して、同ドレンポツト部を閉
塞し、次いでレールを管内に挿入、設置し、次い
で管内閉塞用止栓アツセンブリを開口部から管内
に吊り卸し、同管内閉塞用止栓アツセンブリの移
動体をレール上に乗せて、同管内閉塞用止栓アツ
センブリを管内閉塞位置まで移動させ、次いで押
え板用締め付けナツトを締め付け、シールゴム押
え板を介してシールゴムを管の内周面に圧着し
て、同シールゴムと管内閉塞用シールゴム受とに
より管内を閉塞し、次いで管内閉塞用止栓アツセ
ンブリを支持フレーム及び支持部材を介して開口
部の蓋状体取付面に固定して、管内及びドレンポ
ツト部の閉塞操作を完了するので、主蒸気管等の
管内が大気に対し気密的に閉塞されて、管内の酸
化、腐食が防止される。(Means for solving the problem) The pipe closing device of the present invention is constructed as described above, and the support plug and the support plug rubber are inserted into the drain pot, and the support plug tightening nut is tightened. , crimping the support plug rubber to the inner peripheral surface of the drain pot portion to close the drain pot portion, then inserting and installing the rail into the pipe, and then suspending the stopper assembly for plugging the inside of the pipe into the pipe from the opening, Place the movable body of the stopper assembly for blocking the inside of the pipe on the rail, move the stopper assembly for closing the inside of the pipe to the inside of the pipe closing position, then tighten the tightening nut for the holding plate, and attach the seal rubber to the pipe through the sealing rubber holding plate. The inside of the pipe is closed using the same sealing rubber and the sealing rubber receiver for sealing the inside of the pipe, and then the stopper assembly for plugging the inside of the pipe is fixed to the lid-shaped body mounting surface of the opening via the support frame and the support member. Then, the operation of closing the inside of the pipe and the drain pot section is completed, so that the inside of the main steam pipe and the like is airtightly closed off from the atmosphere, thereby preventing oxidation and corrosion inside the pipe.
（実施例）
次に本考案の管の閉塞装置を第１，２，３図に
示す一実施例により説明すると、Ａがシエルアン
ドチユーブ型熱交換器の２次側水室に連通した主
蒸気管、Ｂが同主蒸気管Ａの途中に設けた開口
部、B1が同開口部Ｂの蓋状体取付面、Ｃが上記
主蒸気管Ａの底部に設けたドレンポツト、１がシ
ールゴム受、２がシールゴム、３がシールゴム押
え板、４が同押え板３の締め付けナツト、５が移
動支持体、６が支持部材、７が支持フレーム、８
が支持プラグ、９が支持プラグ用ゴム、１０が支
持プラグ圧縮リング、１１が上記支持プラグ８の
締め付けナツト、１２がレール取り付けナツト、
１３が移動支持体用固定ナツト、１４がレール、
１５がレール受、１６が支持フレーム固定用ボル
ト、１７がン支持フレーム固定用アングルで、管
内閉塞用止栓アツセンブリがシールゴム受１とシ
ールゴム２とシールゴム押え板３と押え板用締め
付けナツト４と移動支持体５とにより構成されて
いる。また同管内閉塞用止栓を支持する支持機構
が支持部材６と支持フレーム７と支持プラグ８と
支持プラグ用ゴム９と支持プラグ圧縮リング１０
と支持プラグ用締め付けナツト１１とレール取り
付けナツト１２と移動支持体用固定ナツト１３と
レール１４とレール受１５と支持フレーム固定用
ボルト１６と支持フレーム固定用アングル１７と
により構成されている。(Example) Next, the pipe closing device of the present invention will be explained using an example shown in Figs. 1, 2, and 3. A pipe, B is an opening provided in the middle of the main steam pipe A, B 1 is the lid-like body mounting surface of the opening B, C is a drain pot provided at the bottom of the main steam pipe A, 1 is a seal rubber receiver, 2 is a seal rubber, 3 is a seal rubber presser plate, 4 is a tightening nut for the presser plate 3, 5 is a movable support, 6 is a support member, 7 is a support frame, 8
is a support plug, 9 is a support plug rubber, 10 is a support plug compression ring, 11 is a tightening nut for the support plug 8, 12 is a rail mounting nut,
13 is a fixing nut for the moving support body, 14 is a rail,
15 is a rail receiver, 16 is a bolt for fixing the support frame, 17 is an angle for fixing the support frame, and the stopper assembly for blocking the pipe moves with the seal rubber receiver 1, the seal rubber 2, the seal rubber holding plate 3, and the holding plate tightening nut 4. It is constituted by a support body 5. In addition, the support mechanism that supports the stopper for occluding the inside of the pipe includes a support member 6, a support frame 7, a support plug 8, a support plug rubber 9, and a support plug compression ring 10.
, a support plug tightening nut 11, a rail attachment nut 12, a moving support fixing nut 13, a rail 14, a rail receiver 15, a support frame fixing bolt 16, and a support frame fixing angle 17.
（作用）
次に前記管の閉塞装置の作用を説明する、支持
プラグ８と支持プラグ用ゴム９と支持プラグ圧縮
リング１０とをドレンポツトＣに挿入して、支持
プラグ用締め付けナツト１１を締め付け、支持プ
ラグ用ゴム９を圧縮して、外側へ膨らますことに
より、同支持プラグ用ゴム９を主蒸気管Ａ内に固
定し、レール取り付けナツト１２を締め付けるこ
とにより、レール１４を同支持プラグ用ゴム９に
固定する。次いで予め仮り組みしておいた管内閉
塞用止栓アツセンブリ、即ち、シールゴム受１と
シールゴム２とシールゴム押え板３と押え板用締
め付けナツト４と移動支持体５とが上記レール１
４上に吊り卸され、移動支持体５がレール１４上
を移動し、所定位置に達すると、停止して、移動
支持体用固定ナツト１３により固定される。次い
で管内閉塞用止栓アツセンブリのシールゴム受１
及びシールゴム２部分が90°回転して、主蒸気管
Ａ内の閉塞位置にセツトされる。次いで押え板用
締め付けナツト４が締め付けられて、シールゴム
押え板３を介しシールゴム２が主蒸気管Ａの内面
に圧着され、次いで支持フレーム７を支持フレー
ム固定用ボルト１６により開口部Ｂの蓋状体取付
面B1に固定し、移動支持体５を支持部材６によ
り支持フレーム７に固定して、主蒸気管Ａ内の閉
塞を完了する。なおシールゴム受１及びシールゴ
ム２部分を上記のように支持したのは同シールゴ
ム受け１及びシールゴム２部分に相当大きな面圧
がかかり、シールゴム２と主蒸気管Ａ内面との間
の摩擦力だけでは、同面圧を支えきれないからで
ある。(Function) Next, the function of the pipe closing device will be explained.The support plug 8, the support plug rubber 9, and the support plug compression ring 10 are inserted into the drain pot C, and the support plug tightening nut 11 is tightened to support the pipe. By compressing the plug rubber 9 and expanding it outward, the support plug rubber 9 is fixed in the main steam pipe A, and by tightening the rail attachment nut 12, the rail 14 is attached to the support plug rubber 9. Fix it. Next, the stopper assembly for blocking the pipe that has been temporarily assembled in advance, that is, the seal rubber receiver 1, the seal rubber 2, the seal rubber holding plate 3, the holding plate tightening nut 4, and the movable support 5 are attached to the rail 1.
The movable support 5 moves on the rail 14, and when it reaches a predetermined position, it stops and is fixed by the movable support fixing nut 13. Next, seal rubber receiver 1 of the stopper assembly for occluding the pipe
Then, the seal rubber 2 portion is rotated 90 degrees and set in the closed position in the main steam pipe A. Next, the retainer plate tightening nuts 4 are tightened, and the seal rubber 2 is crimped onto the inner surface of the main steam pipe A via the seal rubber retainer plate 3. Then, the support frame 7 is secured to the lid-like body of the opening B by the support frame fixing bolts 16. The movable support 5 is fixed to the mounting surface B 1 and fixed to the support frame 7 by the support member 6 to complete the blockage of the main steam pipe A. The reason why the seal rubber receiver 1 and seal rubber 2 portions are supported as described above is that a considerably large surface pressure is applied to the seal rubber receiver 1 and seal rubber 2 portions, and the frictional force between the seal rubber 2 and the inner surface of the main steam pipe A alone is insufficient. This is because it cannot support the same surface pressure.
（考案の効果）
本考案の管の閉塞装置は前記のように支持プラ
グと支持プラグ用ゴムとをドレンポツト内に挿入
して、支持プラグ用締め付けナツトを締め付け、
支持プラグ用ゴムをドレンポツト部の内周面に圧
着して、同ドレンポツト部を閉塞し、次いでレー
ルを管内に挿入、設置し、次いで管内閉塞用止栓
アツセンブリを開口部から管内に吊り卸し、同管
内閉塞用止栓アツセンブリの移動体をレール上に
乗せて、同管内閉塞用止栓アツセンブリを管内閉
塞位置まで移動させ、次いで押え板用締め付けナ
ツトを締め付け、シールゴム押え板を介してシー
ルゴムを管の内周面に圧着して、同シールゴムと
管内閉塞用シールゴム受とにより管内を閉塞し、
次いで管内閉塞用止栓アツセンブリを支持フレー
ム及び支持部材を介して開口部の蓋状体取付面に
固定して、管内及びドレンポツト部の閉塞操作を
完了するので、主蒸気管等の管内を大気に対し気
密的に閉塞できて、管内の酸化、腐食を防止でき
る効果がある。(Effects of the invention) The pipe closing device of the invention inserts the support plug and the support plug rubber into the drain pot as described above, tightens the support plug tightening nut,
The support plug rubber is crimped onto the inner peripheral surface of the drain pot to close the drain pot, then the rail is inserted and installed into the pipe, and the stopper assembly for plugging the pipe is suspended from the opening into the pipe. Place the movable body of the stopper assembly for closing the pipe on the rail, move the stopper assembly for closing the pipe to the pipe closing position, then tighten the holding plate tightening nut, and tighten the seal rubber of the pipe via the seal rubber holding plate. It is crimped onto the inner peripheral surface and the inside of the pipe is closed using the same sealing rubber and a sealing rubber holder for closing the inside of the pipe.
Next, the stopper assembly for blocking the inside of the pipe is fixed to the lid mounting surface of the opening via the support frame and the support member, and the operation of closing the inside of the pipe and the drain pot part is completed, so that the inside of the pipe such as the main steam pipe is exposed to the atmosphere. On the other hand, it can be closed airtight and has the effect of preventing oxidation and corrosion inside the pipe.
第１図は本考案に係わる管の閉塞装置の一実施
例を示す縦断側面図、第２図は第１図の矢印部
分の拡大縦断側面図、第３図は同閉塞装置の作用
説明図である。
Ａ……管、Ｂ……開口部、B1……蓋状体取付
面、Ｃ……ドレンポツト、１……シールゴム受、
２……シールゴム、３……シールゴム押え板、５
……移動支持体、６……支持部材、７……支持フ
レーム、８……支持プラグ、９……支持プラグ用
ゴム、１１……支持プラグ用締め付けナツト、１
４……レール。
FIG. 1 is a vertical side view showing an embodiment of the tube closure device according to the present invention, FIG. 2 is an enlarged vertical side view of the arrowed area in FIG. 1, and FIG. be. A...Pipe, B...Opening, B1 ...Lid mounting surface, C...Drain pot, 1...Seal rubber receiver,
2... Seal rubber, 3... Seal rubber presser plate, 5
...Moving support body, 6... Support member, 7... Support frame, 8... Support plug, 9... Rubber for support plug, 11... Tightening nut for support plug, 1
4...Rail.
Claims (1)
から管内に挿入されて、管内及びドレンポツト部
を閉塞する管の閉塞装置において、前記管内に挿
入・設置するレールと、管内閉塞用止栓アツセン
ブリと、前記開口部から前記管内に挿入して外端
部を前記蓋状体取付面に着脱自在に固定する支持
フレームと、同支持フレームを介して上記管内閉
塞用止栓アツセンブリを管内閉塞位置に支持する
支持部材とを有し、上記管内閉塞用止栓アツセン
ブリを、管内閉塞用シールゴム受と同シールゴム
受の外周部に取付けたシールゴムとシールゴム押
え板と同シールゴム押え板を介して上記シールゴ
ムを管の内周面に圧着する押え板用締め付けナツ
トと上記レール上を移動する移動支持体とにより
構成し、ドレンポツト部閉塞用止栓アツセンブリ
を、管のドレンポツト部内に挿入する支持プラグ
と同支持プラグの周りに配設した支持プラグ用ゴ
ムと上記支持プラグを介して同支持プラグ用ゴム
を上記ドレンポツト部の内周面に圧着する支持プ
ラグ用締め付けナツトとにより構成したことを特
徴とする管の閉塞装置。 A pipe closing device that is inserted into a pipe through an opening having a lid-like body mounting surface provided in the middle of the pipe to close the pipe and a drain pot, comprising: a rail to be inserted and installed in the pipe; and a stopper for blocking the pipe. an assembly, a support frame that is inserted into the pipe through the opening and removably fixes the outer end to the lid mounting surface; and a stopper assembly for occluding the pipe through the support frame, and the stopper assembly is moved to the pipe occlusion position through the support frame. The stopper assembly for plugging the inside of the pipe is connected to the sealing rubber through the sealing rubber support plate, the seal rubber attached to the outer periphery of the seal rubber supporter, and the sealing rubber holding plate. A support plug for inserting a stopper assembly for closing a drain pot portion into a drain pot portion of a tube, which is composed of a clamping nut for a presser plate that is crimped onto the inner peripheral surface of a pipe, and a movable support that moves on the above-mentioned rail. and a support plug tightening nut that presses the support plug rubber to the inner peripheral surface of the drain pot portion via the support plug. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985060281U JPH0435749Y2 (en) | 1985-04-24 | 1985-04-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985060281U JPH0435749Y2 (en) | 1985-04-24 | 1985-04-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61181990U JPS61181990U (en) | 1986-11-13 |
| JPH0435749Y2 true JPH0435749Y2 (en) | 1992-08-24 |
Family
ID=30587478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985060281U Expired JPH0435749Y2 (en) | 1985-04-24 | 1985-04-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0435749Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5370461U (en) * | 1976-11-17 | 1978-06-13 | ||
| JPS53102250U (en) * | 1977-01-22 | 1978-08-17 |
-
1985
- 1985-04-24 JP JP1985060281U patent/JPH0435749Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61181990U (en) | 1986-11-13 |
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