JPH0688503A - Coupling of main steam stop valve - Google Patents
Coupling of main steam stop valveInfo
- Publication number
- JPH0688503A JPH0688503A JP26426792A JP26426792A JPH0688503A JP H0688503 A JPH0688503 A JP H0688503A JP 26426792 A JP26426792 A JP 26426792A JP 26426792 A JP26426792 A JP 26426792A JP H0688503 A JPH0688503 A JP H0688503A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- connecting rod
- valve rod
- rod
- main steam
- 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
Landscapes
- Control Of Turbines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、火力，原子力発電タ
ービンの入口に設置され、ボイラからの蒸気の供給と遮
断の役目をする主蒸気止め弁のカップリングに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main steam stop valve coupling which is installed at an inlet of a thermal power and nuclear power generation turbine and serves to supply and shut off steam from a boiler.
【０００２】[0002]
【従来の技術】従来、蒸気タービンの主蒸気止め弁と蒸
気加減弁は同一のケーシングに組み込まれ、この複合弁
ケーシングは袋ナットで高圧タービンに接続されてい
る。主蒸気止め弁の機能は、タービンの過速度トリップ
またはその他の保安装置が作動した危急の場合に、ター
ビンへ流入する蒸気を瞬時に遮断することにある。ボイ
ラから導かれた主蒸気は、複合弁ケーシングに流入し、
主蒸気止め弁を経て蒸気加減弁に流入する。弁ケーシン
グに内蔵する弁座に弁体を押し付けまたは分離すること
により、主蒸気止め弁を開閉している。弁体には弁棒が
取り付けられ、この弁棒と連結棒とをカップリングで結
合させている。圧縮ばねにより連結棒に取り付けたばね
座を押し付け、弁棒に固定された弁体を押し付けて弁を
閉じ、連結棒の端部に取り付けたＥＨアクチュエータに
より弁棒を引っ張ることにより、弁体を移動させ主蒸気
止め弁を開く。2. Description of the Related Art Conventionally, a main steam stop valve and a steam control valve of a steam turbine are incorporated in the same casing, and this composite valve casing is connected to a high pressure turbine with a cap nut. The function of the main steam stop valve is to instantaneously shut off the steam entering the turbine in the event of a turbine overspeed trip or in the event of an emergency when a safety device is activated. The main steam introduced from the boiler flows into the composite valve casing,
It flows into the steam control valve through the main steam stop valve. The main steam stop valve is opened and closed by pressing or separating the valve body against the valve seat built in the valve casing. A valve rod is attached to the valve body, and the valve rod and the connecting rod are coupled by a coupling. The spring seat attached to the connecting rod is pressed by the compression spring, the valve body fixed to the valve rod is pressed to close the valve, and the valve rod is moved by pulling the valve rod by the EH actuator attached to the end of the connecting rod. Open the main steam stop valve.
【０００３】図３は従来の主蒸気止め弁のカップリング
の断面図である。図３において、連結棒１の端部には図
示しないＥＨアクチュエータを備える。ＥＨアクチュエ
ータは電気信号を油圧に変換するコンバータと配圧弁と
からなり、電気出力信号をコンバータにより油圧に変換
し、圧油をサーボモータに送り、連結棒を移動させるこ
とにより主蒸気止め弁を開閉する。カップリングの組立
は以下の順序で行う。先ず弁棒４にしめボルト２を嵌
め、弁棒４にナット３を取り付ける。次いで連結棒１を
弁棒４の外側に挿入し連結棒１の内径側としめボルト２
の外径側とをねじで結合させ、さらに連結棒１にふた５
を取り付ける。連結棒１を引っ張るときしめボルト２は
ナット３に当たり、弁棒４を引っ張って図示しない弁体
を開くことができる。連結棒１を押付けると弁棒４に取
り付けた弁体が移動して主蒸気止め弁を閉じる。FIG. 3 is a sectional view of a coupling of a conventional main steam stop valve. In FIG. 3, an EH actuator (not shown) is provided at the end of the connecting rod 1. The EH actuator consists of a converter that converts electric signals into hydraulic pressure and a pressure distribution valve. The electric output signal is converted into hydraulic pressure by the converter, pressure oil is sent to the servomotor, and the connecting rod is moved to open and close the main steam stop valve. To do. The coupling is assembled in the following order. First, the valve rod 4 is fitted with the bolt 2 and the valve rod 4 is fitted with the nut 3. Next, the connecting rod 1 is inserted into the outside of the valve rod 4, and the inner diameter side of the connecting rod 1 and the bolt 2
The outer diameter side of the is connected with a screw, and the connecting rod 1 is covered.
Attach. When the connecting rod 1 is pulled, the tightening bolt 2 hits the nut 3, and the valve rod 4 can be pulled to open the valve body (not shown). When the connecting rod 1 is pressed, the valve element attached to the valve rod 4 moves to close the main steam stop valve.
【０００４】[0004]
【発明が解決しようとする課題】従来は、連結棒の端面
１ａと弁棒４に取り付けられたナットの端面３ａとは平
面であった。このため主蒸気止め弁の組立時のカップリ
ングの芯出しにおいては、弁本体側の弁棒４とアクチュ
エータ側の連結棒１とを平面同志で接触させて同一芯を
得る必要があり、極めて精密な作業が必要であった。Conventionally, the end surface 1a of the connecting rod and the end surface 3a of the nut attached to the valve rod 4 were flat. Therefore, in centering the coupling when assembling the main steam stop valve, it is necessary to bring the valve rod 4 on the valve body side and the connecting rod 1 on the actuator side into contact with each other in a plane to obtain the same core. Necessary work.
【０００５】この発明は、主蒸気止め弁のカップリング
の芯出し作業を簡略化し、かつアクチュエータから弁棒
に作用する力を常に均一にするカップリングを提供する
ことを目的とする。An object of the present invention is to provide a coupling which simplifies the centering work of the coupling of the main steam stop valve and makes the force acting from the actuator on the valve rod always uniform.
【０００６】[0006]
【課題を解決するための手段】蒸気タービンの入口に配
置される主蒸気止め弁の弁棒と連結棒とを結合するカッ
プリングにおいて、前記連結棒にねじ込まれ胴部の外径
側にねじが刻まれたユニオンソケットと、前記弁棒に挿
入され胴部の内径側にねじが刻まれたユニオンナット
と、前記弁棒の端部に取り付けられるナットとからな
り、前記連結棒の端面と前記弁棒の端面とのいずれか一
方を球面となし、他方を平面となし、前記ユニオンソケ
ットとユニオンナットとを互いにねじで結合させ、前記
連結棒の端面と前記弁棒の端面とを接触させたことによ
って、上記目的を達成する。In a coupling for connecting a valve rod of a main steam stop valve arranged at an inlet of a steam turbine and a connecting rod, a screw is screwed into the connecting rod and a screw is provided on an outer diameter side of a body portion. It consists of a carved union socket, a union nut inserted into the valve rod and screwed on the inner diameter side of the body, and a nut attached to the end of the valve rod. One of the end surfaces of the rod is a spherical surface, the other is a flat surface, the union socket and the union nut are screwed together, and the end surface of the connecting rod and the end surface of the valve rod are in contact with each other. By the above, the above object is achieved.
【０００７】また、連結棒の端面を球面となし弁棒の端
面を平面とすれば、芯出し作業を簡略化する上に好適で
ある。If the end surface of the connecting rod is made spherical and the end surface of the valve rod is made flat, it is suitable for simplifying the centering work.
【０００８】さらに、連結棒の端面を平面となし弁棒の
端面を球面とすれば、芯出し作業を簡略化する上に好適
である。Further, if the end face of the connecting rod is flat and the end face of the valve rod is spherical, it is suitable for simplifying the centering work.
【０００９】[0009]
【作用】この発明においては、連結棒または弁棒の端面
を球面となし、互いに端面を接触させユニオンソケット
及びユニオンナットで結合させたので、カップリングの
芯出し作業が簡略化される。また、連結棒を介して弁棒
に作用するばね力を常に均一に弁棒に伝達させることが
できる。In the present invention, since the end faces of the connecting rod or the valve rod are spherical, and the end faces are brought into contact with each other and joined by the union socket and the union nut, the centering work of the coupling is simplified. Further, the spring force acting on the valve rod via the connecting rod can be always uniformly transmitted to the valve rod.
【００１０】[0010]
【実施例】実施例１ 図１はこの発明の連結棒の端面を球面とした実施例によ
る主蒸気止め弁のカップリングの断面である。図１にお
いて図３と同じ部位は同じ符号を付してある。この発明
によるカップリングは、端面１ａが球面の連結棒１にね
じ込まれ、胴部の外周部にねじが刻まれたユニオンソケ
ット６と、その端面４ａが平面の弁棒４に挿入され胴部
の外径側にねじが刻まれたユニオンナット７と、弁棒４
の端部に取り付けられるナット８とからなる。組立は次
の順序で行う。弁棒４にユニオンナット７を挿入し、次
いでナット８を弁棒４に締め付ける。さらに連結棒１に
ユニオンソケット６をねじ込み、ユニオンナット７のね
じとユニオンソケット６のねじとを噛み合わせ、連結棒
の端面１ａを弁棒の端面４ａと接触させる。このように
して、アクチュエータに結合された連結棒１と弁棒４と
の芯のずれは、球面である連結棒の端面１ａで自動的に
吸収される。Embodiment 1 FIG. 1 is a cross section of a coupling of a main steam stop valve according to an embodiment in which the end surface of a connecting rod of the present invention is spherical. 1, the same parts as those in FIG. 3 are designated by the same reference numerals. The coupling according to the present invention includes a union socket 6 in which the end face 1a is screwed into the spherical connecting rod 1 and the outer periphery of the body is threaded, and the end face 4a of the union socket 6 is inserted into the flat valve rod 4 to form the body part. Union nut 7 with threads on the outer diameter side and valve rod 4
And a nut 8 attached to the end of the. Assemble in the following order. Insert the union nut 7 into the valve stem 4 and then tighten the nut 8 onto the valve stem 4. Further, the union socket 6 is screwed into the connecting rod 1, and the screw of the union nut 7 and the screw of the union socket 6 are engaged with each other to bring the end face 1a of the connecting rod into contact with the end face 4a of the valve rod. In this way, the misalignment of the core between the connecting rod 1 and the valve rod 4 coupled to the actuator is automatically absorbed by the end surface 1a of the connecting rod, which is a spherical surface.
【００１１】実施例２ 図２はこの発明の弁棒の端面を球面とした実施例による
主蒸気止め弁のカップリングの断面である。図２におい
て図３と同じ部位は同じ符号を付してある。この発明に
よるカップリングは、端面１ａが平面の連結棒１にねじ
込まれ、胴部の外周部にねじが刻まれたユニオンソケッ
ト６と、その端面４ａが球面の弁棒４に挿入され胴部の
外径側にねじが刻まれたユニオンナット７と、弁棒４の
端部に取り付けられるナット８とからなる。組立は図１
と同様に行うので説明を省略する。このようにして、ア
クチュエータに結合された連結棒１と弁棒４との芯のず
れは、球面である弁棒の端面４ａ自動 に吸収される。 Embodiment 2 FIG. 2 is a sectional view of a coupling of a main steam stop valve according to an embodiment in which the end surface of the valve rod of the present invention is spherical. 2, the same parts as those in FIG. 3 are designated by the same reference numerals. In the coupling according to the present invention, the end face 1a is screwed into the flat connecting rod 1 and the union socket 6 in which the outer periphery of the body is threaded, and the end face 4a of the union socket 6 are inserted into the spherical valve rod 4 to form the body. It is composed of a union nut 7 having a thread on the outer diameter side and a nut 8 attached to the end of the valve rod 4. Assembly is Figure 1
The description is omitted because it is performed in the same manner as. In this way, the misalignment of the core between the connecting rod 1 and the valve rod 4 coupled to the actuator is automatically absorbed by the spherical end face 4a of the valve rod.
【００１２】[0012]
【発明の効果】この発明においては、主蒸気止め弁の弁
棒とアクチュエータ側の連結棒とをユニオンソケットと
ユニオンナットで結合させ、かつ連結棒または弁棒の端
面を球面としたので、両者の芯ずれは自動的に球面で吸
収されるので、カップリングの芯出しが簡略化され、か
つアクチュエータ側の連結棒を介して弁棒に作用する力
は常に均一となり、主蒸気止め弁の遮断性能を高める。According to the present invention, since the valve rod of the main steam stop valve and the connecting rod on the actuator side are connected by the union socket and the union nut, and the end face of the connecting rod or valve rod is made spherical, both of them are connected. Since the misalignment is automatically absorbed by the spherical surface, the centering of the coupling is simplified, and the force acting on the valve rod via the connecting rod on the actuator side is always uniform, and the shutoff performance of the main steam stop valve is improved. Increase.
【図１】この発明の第１の実施例による主蒸気止め弁の
カップリングの断面図である。FIG. 1 is a sectional view of a coupling of a main steam stop valve according to a first embodiment of the present invention.
【図２】この発明の第２の実施例による主蒸気止め弁の
カップリングの断面図である。FIG. 2 is a sectional view of a main steam stop valve coupling according to a second embodiment of the present invention.
【図３】従来の主蒸気止め弁のカップリングの断面図で
ある。FIG. 3 is a cross-sectional view of a conventional main steam stop valve coupling.
１ 連結棒 １ａ 連結棒の端面 ４ 弁棒 ４ａ 弁棒の端面 ６ ユニオンソケット ７ ユニオンナット ８ ナット 1 connecting rod 1a end face of connecting rod 4 valve rod 4a end face of valve rod 6 union socket 7 union nut 8 nut
Claims (3)
め弁の弁棒と連結棒とを結合するカップリングにおい
て、前記連結棒にねじ込まれ胴部の外径側にねじが刻ま
れたユニオンソケットと、前記弁棒に挿入され胴部の内
径側にねじが刻まれたユニオンナットと、前記弁棒の端
部に取り付けられるナットとからなり、前記連結棒の端
面と前記弁棒の端面とのいずれか一方を球面となし、他
方を平面となし、前記ユニオンソケットとユニオンナッ
トとを互いにねじで結合させ、前記連結棒の端面と前記
弁棒の端面とを接触させたことを特徴とする主蒸気止め
弁のカップリング。1. A coupling for connecting a valve rod of a main steam stop valve arranged at an inlet of a steam turbine and a connecting rod, the union being screwed into the connecting rod and having a thread cut on an outer diameter side of a body portion. A socket, a union nut inserted into the valve rod and having a thread engraved on the inner diameter side of the body, and a nut attached to the end of the valve rod, and the end face of the connecting rod and the end face of the valve rod. One of the two is a spherical surface and the other is a flat surface, the union socket and the union nut are screwed together, and the end surface of the connecting rod and the end surface of the valve rod are brought into contact with each other. Main steam stop valve coupling.
グにおいて、連結棒の端面を球面となし、弁棒の端面を
平面としたことを特徴とする主蒸気止め弁のカップリン
グ。2. The main steam stop valve coupling according to claim 1, wherein the connecting rod has a spherical end surface and the valve rod has a flat end surface.
グにおいて、連結棒の端面を平面となし、弁棒の端面を
球面としたことを特徴とする主蒸気止め弁のカップリン
グ。3. The main steam stop valve coupling according to claim 1, wherein the connecting rod has a flat end surface and the valve rod has a spherical end surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4264267A JP3018780B2 (en) | 1992-09-07 | 1992-09-07 | Main steam stop valve coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4264267A JP3018780B2 (en) | 1992-09-07 | 1992-09-07 | Main steam stop valve coupling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0688503A true JPH0688503A (en) | 1994-03-29 |
| JP3018780B2 JP3018780B2 (en) | 2000-03-13 |
Family
ID=17400799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4264267A Expired - Fee Related JP3018780B2 (en) | 1992-09-07 | 1992-09-07 | Main steam stop valve coupling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3018780B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017145365A1 (en) * | 2016-02-26 | 2017-08-31 | 三菱重工コンプレッサ株式会社 | Closure valve and vapor turbine |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8363016B2 (en) | 2003-08-18 | 2013-01-29 | Gunze Limited | Transparent touch panel and electronic apparatus |
| TWI390438B (en) | 2007-08-30 | 2013-03-21 | Kyocera Corp | Touch panel and touch panel display device |
| KR102122067B1 (en) * | 2018-08-17 | 2020-06-11 | 동우 화인켐 주식회사 | Touch sensor module and display device including the same |
-
1992
- 1992-09-07 JP JP4264267A patent/JP3018780B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017145365A1 (en) * | 2016-02-26 | 2017-08-31 | 三菱重工コンプレッサ株式会社 | Closure valve and vapor turbine |
| US10677085B2 (en) | 2016-02-26 | 2020-06-09 | Mitsubishi Heavy Industries Compressor Corporation | Stop valve and steam turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3018780B2 (en) | 2000-03-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |