JPS5941065B2 - non-return valve - Google Patents
non-return valveInfo
- Publication number
- JPS5941065B2 JPS5941065B2 JP6664077A JP6664077A JPS5941065B2 JP S5941065 B2 JPS5941065 B2 JP S5941065B2 JP 6664077 A JP6664077 A JP 6664077A JP 6664077 A JP6664077 A JP 6664077A JP S5941065 B2 JPS5941065 B2 JP S5941065B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- support plate
- spindle support
- seat
- 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
Landscapes
- Check Valves (AREA)
Description
【発明の詳細な説明】
本発明は、原子炉緊急冷却系統等に使用するのに好適な
スイング式の逆止弁に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a swing type check valve suitable for use in a nuclear reactor emergency cooling system or the like.
第１図は従来の逆止弁を示し、弁体１の入口側９には上
流側配管９Ａを溶接し出口側１０には下流側配管１０Ａ
を溶接している。FIG. 1 shows a conventional check valve, in which an upstream pipe 9A is welded to the inlet side 9 of the valve body 1, and a downstream pipe 10A is welded to the outlet side 10.
are welded.
入口側９と出口側１０とを結ぶ直線方向に対し直角方向
にはスピンドル支持板４を取付けるスピンドル支持板取
付部１Ｂを設けている。A spindle support plate attachment portion 1B for attaching the spindle support plate 4 is provided in a direction perpendicular to the straight line connecting the inlet side 9 and the outlet side 10.
スピンドル支持板４には入口側９の弁座２を開閉する弁
体６をスピンドル３を介し回動自在に取付けている。A valve body 6 for opening and closing the valve seat 2 on the inlet side 9 is rotatably attached to the spindle support plate 4 via the spindle 3.
スピンドル支持板４は、スピンドル支持板取付部１Ｂに
押しピン８を介し位置決めされ、支持板押えリング７を
介し背後より押圧されボンネット５を弁箱１にボルト（
図示せず）等を介し固定することにより固着支持される
。The spindle support plate 4 is positioned at the spindle support plate mounting portion 1B via a push pin 8, and is pressed from behind via a support plate press ring 7 to bolt the bonnet 5 to the valve box 1 (
(not shown) or the like.
また、弁箱１のボンネット５取付側も外部に対し密閉さ
れる。Further, the side of the valve box 1 where the bonnet 5 is attached is also sealed from the outside.
６Ａは弁体アームである。6A is a valve body arm.
通常、流体は入口側９から出口側１０に向って流れ、流
体によって弁体６は押開かれストッパー座１Ａに接して
停止し、出口側１０から入口側９へ流れる流体が生じた
場合は弁体６が弁座２に密着して流れを阻止する。Normally, fluid flows from the inlet side 9 to the outlet side 10, and the valve body 6 is pushed open by the fluid and stops in contact with the stopper seat 1A. If fluid flows from the outlet side 10 to the inlet side 9, the valve body 6 The body 6 comes into close contact with the valve seat 2 and blocks the flow.
上記の如く、逆止弁は配管系において一方向の流れを許
し逆方向の流れを制限する場合に使用し、原子炉へ向う
流れのみを必要とする原子炉緊急冷却系統の原子炉近傍
にも設置されている。As mentioned above, check valves are used in piping systems to allow flow in one direction and restrict flow in the opposite direction, and are also used near the reactor in emergency reactor cooling systems that only require flow toward the reactor. is set up.
そして、原子炉及び原子炉緊急冷却系統等の配管系統の
据付が完了すると、運転に入る前に系統のフラッシング
（洗浄）を行い、据付時系統内に混入した異物（錆、溶
接スラグ等）を除去する。After the installation of the reactor and piping systems such as the reactor emergency cooling system is completed, the system is flushed (cleaned) before starting operation to remove any foreign matter (rust, welding slag, etc.) that may have entered the system during installation. Remove.
このフラッシング時、原子炉緊急冷却系統の異物を原子
炉へ流入させないために、原子炉側の下流側配管１０Ａ
を取外すか、あるいは下流側配管１０Ａを未施工にして
おき、弁箱１の弁体６の取付部側の洗浄用下流側出口１
６にフラッシング用仮配管を接続してフラッシングを行
う。During this flushing, in order to prevent foreign matter from the reactor emergency cooling system from flowing into the reactor, the downstream piping 10A on the reactor side
Either remove it or leave the downstream piping 10A uninstalled, and connect the downstream outlet 1 for cleaning on the side where the valve body 6 of the valve box 1 is attached.
Connect temporary piping for flushing to 6 and perform flushing.
このような方法によらないと、出口側に洗浄用配管を取
付け、フラッシング後洗浄用配管を取外し後に本設配管
の溶接作業を行う必要が生じ配管作業自体が二度手間と
なり工程的に不益となるため、本逆止弁を利用してフラ
ッシングを行うのが有利であると考えられる。If this method is not used, it will be necessary to install the cleaning piping on the outlet side, remove the cleaning piping after flushing, and then weld the main piping, which will make the piping work itself twice and be disadvantageous in terms of the process. Therefore, it is considered advantageous to perform flushing using this check valve.
第３図により従来のフラッシング作業を説明する。A conventional flushing operation will be explained with reference to FIG.
第１図の逆止弁のボンネット５を外し、支持板押えリン
グ７、押しピン８、スピンドル３、スピンドル支持板４
、弁体６等すべて取り出した状態で、弁箱１の出口側内
面に盲治具１２を装着する。Remove the bonnet 5 of the check valve shown in FIG.
, with the valve body 6 etc. all taken out, a blind jig 12 is attached to the inner surface of the outlet side of the valve box 1.
盲治具１２は弁箱１の出口側内面形状にあわせて製作し
、更にパツキン２０によりシールする。The blind jig 12 is manufactured according to the shape of the inner surface on the outlet side of the valve box 1, and is further sealed with a packing 20.
また、弁座２に接触する金具１３とねじ棒１４のねじ２
１を調節し確実に固定する。In addition, the metal fitting 13 that contacts the valve seat 2 and the screw 2 of the threaded rod 14
1 and securely fix it.
このようにして、フラッシング水を上流側配管９Ａより
流し、弁箱１の仮設配管１１より排出することにより系
統のフラッシングを行う。In this way, flushing water is caused to flow through the upstream pipe 9A and discharged from the temporary pipe 11 of the valve box 1, thereby flushing the system.
しかし、通常逆止弁は盲治具１２の装着を考慮した構造
となっていないため、弁の口径が大きくフラッシング水
の圧力が高くなると、盲治具１２と弁箱１との隙間（シ
ール面）よりフラッシング水が下流側配管１０Ａへ漏洩
する危険があること及び盲治具１２そのものの流出等が
問題となる。However, check valves are usually not structured to take into account the installation of the blind jig 12, so when the valve diameter is large and the pressure of the flushing water increases, the gap between the blind jig 12 and the valve body 1 (sealing surface ), there is a risk that the flushing water will leak into the downstream piping 10A, and the blind jig 12 itself will leak out, which poses problems.
本発明の目的は、系統配管のフラッシング作業時の流路
の形成及び取外し作業が簡単容易で、弁箱出口側の盲装
置を確実に行うことができる逆止弁を提供することにあ
る。SUMMARY OF THE INVENTION An object of the present invention is to provide a check valve in which the formation and removal of a flow path during system piping flushing work is simple and easy, and the blind device on the valve box outlet side can be reliably installed.
本発明は、弁箱の入口側の弁座にスピンドル支持板に支
持される弁体を開閉可能に取付け、上記人口側及び出口
側を結ぶ直線方向に対し直角方向の弁体を支持するスピ
ンドル支持板取付部側にも洗浄用下流側出口を形成し、
出口側に弁体着座用の盲装置取付用座を設け、ストッパ
ー座に弁体アーム回動用の切欠溝を設け、上記スピンド
ル支持板取付部に弁体を取付けたスピンドル支持板を１
０００回転し取付けて盲装置取付用、牢を弁体を介し閉
鎖可能に形成したものである。The present invention provides a spindle support that is capable of opening and closing a valve body supported by a spindle support plate on a valve seat on the inlet side of a valve box, and supporting the valve body in a direction perpendicular to a straight line connecting the above-mentioned population side and outlet side. A downstream outlet for cleaning is also formed on the plate attachment side,
A seat for mounting a blind device for seating the valve body is provided on the outlet side, a cutout groove for rotating the valve body arm is provided on the stopper seat, and a spindle support plate with the valve body attached to the above-mentioned spindle support plate mounting portion is installed at 1.
000 rotations and is used to attach a blind device, and the cell is formed so that it can be closed via a valve body.
以下本発明の逆止弁の一実施例を、従来と同部品は同符
号により、第５図、第６図（こより説明する。An embodiment of the check valve of the present invention will be described below with reference to FIGS. 5 and 6, where the same parts as those of the conventional one are designated by the same reference numerals.
通常の逆止弁として使用する場合は第１図の構成と同様
に構成することは勿論である。When used as a normal check valve, it goes without saying that the structure is similar to that shown in FIG.
出口側１０に入口側９の弁座２と対称位置に盲装置取付
用座１５を取付け、また、ストッパー座１Ａに弁体アー
ム６Ａが回動可能に支障のないように切欠１７を設けて
いる。A blind device mounting seat 15 is installed on the outlet side 10 at a position symmetrical to the valve seat 2 on the inlet side 9, and a notch 17 is provided in the stopper seat 1A so that the valve body arm 6A can rotate without any problem. .
次に系統配管のフラッシングを行う場合には、ボンネッ
ト５、支持板押えリング７、押しピン８を取外し、スピ
ンドル支持板取付部１Ｂにて、スピンドル３及び弁体６
を組込んだままのスピンドル支持板４を１０００回転し
、押しピン８、支持板押えリング７を取付け、ボンネッ
ト５の取付位置に仮配管１１を固定すれば、弁体６は第
５図の如く盲装置となりフラッシング可能な状態となる
。Next, when flushing the system piping, remove the bonnet 5, support plate holding ring 7, and push pin 8, and attach the spindle 3 and valve body 6 to the spindle support plate attachment part 1B.
Rotate the spindle support plate 4 with it installed 1000 times, attach the push pin 8 and the support plate holding ring 7, and fix the temporary pipe 11 at the mounting position of the bonnet 5, the valve body 6 will be as shown in Fig. 5. It becomes a blind device and becomes ready for flushing.
即ち、フラッシング水は上流側配管９Ａより弁箱１に流
れ込むが、フラッシング水の流れにより弁体６は盲装置
取付用座１５に密着し、下流側配管１０Ａに漏洩流入す
ることなく仮配管１１側・・＼流れ去る。That is, the flushing water flows into the valve box 1 from the upstream piping 9A, but the flow of the flushing water causes the valve body 6 to come into close contact with the blind device mounting seat 15, so that it does not leak into the downstream piping 10A and flows into the temporary piping 11 side. ...＼Flows away.
上記のように、弁箱の出口側近傍に盲装置取付用座を設
け、系統配管のフラッシング作業時には逆止弁の弁体の
取付位置を変更するだけでそのまま弁箱出口側の盲装置
として使用出来る。As shown above, a seat for mounting a blind device is provided near the outlet side of the valve box, and when flushing the system piping, simply change the mounting position of the valve body of the check valve and use it as a blind device on the outlet side of the valve box. I can do it.
従って、フラッシング作業時の流路形成及び取外しがき
わめて簡単で容易である。Therefore, forming and removing the flow path during flushing work is extremely simple and easy.
また、出口側配管・＼の漏洩流入することや治工具の流
出を未然に防止出来る。In addition, it is possible to prevent leakage and inflow of the outlet side piping and outflow of jigs and tools.
以上記述した如く本発明の逆止弁は、フラッシング作業
時の流路の形成及び取外し作業が簡単容易で作業工数を
低減し、弁箱出口側の盲装置を確実に行うことができる
効果を有するものである。As described above, the check valve of the present invention has the effect that forming and removing a flow path during flushing work is simple and easy, reduces the number of work steps, and can reliably perform the blind device on the outlet side of the valve box. It is something.
第１図は従来の逆止弁の断面図、第２図は第１図の弁体
及びスピンドルの正面図、第３図は第１図の逆止弁の従
来のフラッシング時の断面図、第４図は第３図の盲治具
、金具の正面図、第５図は本発明の逆止弁の一実施例を
示すフラッシング時の断面図、第６図は第５図のＶｌ−
Ｖｌ矢視部側面図である。
１・・・・・・弁箱、１Ａ・・・・・・ストッパー座、
１Ｂ・・・・・・スピンドル支持板取付部、４・・・・
・・スピンドル支持板、６・・・・・・弁体、６Ａ・・
・・・・弁体アーム、９・・・・・・入口側、１０・・
・・・・出口側、１５・・・・・・盲装置取付用座、１
６・・・・・・洗浄用下流側出口、１７・・・・・・切
欠溝。Figure 1 is a sectional view of a conventional check valve, Figure 2 is a front view of the valve body and spindle in Figure 1, Figure 3 is a sectional view of the check valve in Figure 1 during conventional flushing, and Figure 3 is a sectional view of the check valve in Figure 1 during conventional flushing. 4 is a front view of the blind jig and metal fittings shown in FIG. 3, FIG. 5 is a cross-sectional view of an embodiment of the check valve of the present invention during flushing, and FIG. 6 is a front view of the blind jig and metal fittings shown in FIG.
It is a side view of a section seen from the Vl arrow. 1... Valve box, 1A... Stopper seat,
1B...Spindle support plate mounting part, 4...
... Spindle support plate, 6... Valve body, 6A...
...Valve arm, 9...Inlet side, 10...
...Exit side, 15...Blind device mounting seat, 1
6...Downstream outlet for cleaning, 17...Notch groove.
Claims (1)
る弁体を開閉可能に取付け、上記入口側及び出口側を結
ぶ直線方向に対し直角方向のスピンドル支持板取付部側
に洗浄用下流側出口を形成するようにした逆止弁におい
て、上記出口側に盲装置用取付座を設け、ストッパー座
に弁体アーム回動用の切欠溝を設け、上記スピンドル支
持板取付部に弁体を取付けたスピンドル支持板を１８０
°回転し取付けて盲装置取付用座が弁体を介し閉鎖可能
に形成されたことを特徴とする逆止弁。1. A valve body supported by a spindle support plate is attached to the valve seat on the inlet side of the valve box so that it can be opened and closed, and a cleaning downstream valve is installed on the spindle support plate mounting part side in a direction perpendicular to the straight line connecting the inlet side and outlet side. In the check valve configured to form a side outlet, a mounting seat for a blind device is provided on the outlet side, a notch groove for rotating the valve body arm is provided on the stopper seat, and a valve body is attached to the spindle support plate mounting portion. 180mm spindle support plate
A check valve characterized in that the blind device mounting seat is formed so that it can be rotated and closed via a valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6664077A JPS5941065B2 (en) | 1977-06-08 | 1977-06-08 | non-return valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6664077A JPS5941065B2 (en) | 1977-06-08 | 1977-06-08 | non-return valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS542516A JPS542516A (en) | 1979-01-10 |
| JPS5941065B2 true JPS5941065B2 (en) | 1984-10-04 |
Family
ID=13321690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6664077A Expired JPS5941065B2 (en) | 1977-06-08 | 1977-06-08 | non-return valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5941065B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10964299B1 (en) | 2019-10-15 | 2021-03-30 | Shutterstock, Inc. | Method of and system for automatically generating digital performances of music compositions using notes selected from virtual musical instruments based on the music-theoretic states of the music compositions |
| US11011144B2 (en) | 2015-09-29 | 2021-05-18 | Shutterstock, Inc. | Automated music composition and generation system supporting automated generation of musical kernels for use in replicating future music compositions and production environments |
| US11024275B2 (en) | 2019-10-15 | 2021-06-01 | Shutterstock, Inc. | Method of digitally performing a music composition using virtual musical instruments having performance logic executing within a virtual musical instrument (VMI) library management system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59182801U (en) * | 1983-05-25 | 1984-12-05 | 株式会社 大協器械製作所 | Ceiling-mounted surgical light |
-
1977
- 1977-06-08 JP JP6664077A patent/JPS5941065B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11011144B2 (en) | 2015-09-29 | 2021-05-18 | Shutterstock, Inc. | Automated music composition and generation system supporting automated generation of musical kernels for use in replicating future music compositions and production environments |
| US10964299B1 (en) | 2019-10-15 | 2021-03-30 | Shutterstock, Inc. | Method of and system for automatically generating digital performances of music compositions using notes selected from virtual musical instruments based on the music-theoretic states of the music compositions |
| US11024275B2 (en) | 2019-10-15 | 2021-06-01 | Shutterstock, Inc. | Method of digitally performing a music composition using virtual musical instruments having performance logic executing within a virtual musical instrument (VMI) library management system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS542516A (en) | 1979-01-10 |
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