JPS58124009A - Main steam valve device - Google Patents
Main steam valve deviceInfo
- Publication number
- JPS58124009A JPS58124009A JP677482A JP677482A JPS58124009A JP S58124009 A JPS58124009 A JP S58124009A JP 677482 A JP677482 A JP 677482A JP 677482 A JP677482 A JP 677482A JP S58124009 A JPS58124009 A JP S58124009A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- steam
- main steam
- valve device
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K49/00—Means in or on valves for heating or cooling
- F16K49/005—Circulation means for a separate heat transfer fluid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Control Of Turbines (AREA)
- Details Of Valves (AREA)
Abstract
Description
【発明の詳細な説明】
〈発明の技術分野〉
本発明は、蒸気原動所ｉ二おける蒸気タービンζ：使用
される主蒸気弁装置に関する。DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a main steam valve device used in a steam turbine ζ in a steam power plant.
〈発明の技術的宵景〉
一般に蒸気原勉所（二おいて、例えば、ボイラ等蒸気発
生器から蒸気タービンに連通する生蒸気管には蒸気を瞬
時１ユ蓮断する主蒸気止め弁や蒸気流量な制御する蒸気
加減弁等による主蒸気弁装置が設置さ才ｔている。<Technical Scene of the Invention> In general, a live steam pipe that connects a steam generator such as a boiler to a steam turbine is equipped with a main steam stop valve that instantly shuts off steam, or a steam A main steam valve device, such as a steam control valve, is installed to control the flow rate.
従来、この根の主蒸気弁装＆は、第１図に示されるよう
Ｃ二、蒸気の流入口ｔ＝および流出口答を備えた弁本体
１の中央に、弁孔ｄを形成する弁座８を設け、この弁座
８１＝直上する上記弁本体１の位置に蓋板２をボルト３
で固定し、他方、上記流出口答の近傍の上記弁本体ＩＩ
−ガイド筒体７を植設し、このガイド筒体に図示しない
油筒で作動する弁棒５を指動自在Ｃ二軸装し、との弁棒
５の一端部に弁体６を上記弁座８に肖嫉し得るよう（−
設けられている。したがって、上記弁棒５と一体の弁体
６を油筒で作動して開口することＣ二より、蒸気発生器
からの高温・高圧蒸気を流入口ａがら弁孔ｄおよび流出
口を通して蒸気タービンに導ひかれるようになっている
。Conventionally, this main steam valve device & is provided with a valve seat 8 forming a valve hole d in the center of a valve body 1 provided with a steam inlet t and an outlet, as shown in FIG. The cover plate 2 is attached to the valve body 1 directly above the valve seat 81 by bolts 3.
and on the other hand, the valve body II near the outlet opening.
- A guide cylinder 7 is installed, a valve rod 5 operated by an oil cylinder (not shown) is mounted on the guide cylinder with two movable C shafts, and a valve body 6 is attached to one end of the valve rod 5 of the valve. As if I could be jealous of Za8 (-
It is provided. Therefore, by operating the valve body 6 integrated with the valve stem 5 with an oil cylinder to open it, high-temperature, high-pressure steam from the steam generator is passed from the inlet a to the valve hole d and the outlet to the steam turbine. It is designed to be guided.
〈背景技術の問題点〉
また、近時、蒸気原動所効率を上けるため６ユ、蒸気圧
力、温度を従来、この種のものより上昇させて、熱効率
の向上を図ることが望まれている。<Problems with the background technology> In recent years, in order to increase the efficiency of steam power plants, it has been desired to increase the steam pressure and temperature higher than in conventional systems of this type in order to improve thermal efficiency. .
しかし、使用蒸気が、高温・高圧になった場合。However, if the steam used becomes high temperature and high pressure.
上述した主蒸気弁装（ｌｌ！は、種々な問題を生じる。The main steam valve system (ll!) described above causes various problems.
すなわち、蒸気タービンの冷態起動時、上述した生蒸気
弁装置ＩｔＣ二蒸気発生器からの従来の蒸気よりもかな
り高い高温・高圧蒸気をそのまま供給すると、かり５二
王蒸気弁装置の材質がクロム／モリプ′ デンを添〃口
したものやバナジウムを含む耐熱鋼でりっても、弁本体
か急激に加熱されて、この弁本体の内壁から外壁に向っ
て急激な温度勾配が生じ、やがてｌ−１１ｅ用直二供し
得ないという問題が発生するおそれがある。In other words, when the steam turbine is started in a cold state, if steam with a high temperature and pressure that is considerably higher than the conventional steam from the above-mentioned live steam valve device ItC two-steam generator is directly supplied, the material of the two-way steam valve device is chromium. Even if the valve body is made of heat-resistant steel that contains molypdenum or vanadium, the valve body will heat up rapidly, creating a sharp temperature gradient from the inner wall to the outer wall of the valve body, and eventually the valve body will heat up rapidly. There is a possibility that a problem may arise in which direct two-way connection for -11e is not possible.
〈発明の目的〉
そこで、本発明＋７上記の事情にもとすき、蒸気ＩＭ動
動態熱効率向上対策上、弁本体の肉厚を厚くし、なくと
も、高温・高圧の蒸気（ユ耐え得るよう１ユＩ７た主蒸
気弁装置を提供することを目的とする。<Purpose of the Invention> Therefore, the present invention +7 In view of the above-mentioned circumstances, in order to improve the dynamic thermal efficiency of the steam IM, the wall thickness of the valve body is made thicker, and at least 1. The object of the present invention is to provide a main steam valve device that has a U.I.
〈発明の振散〉
上記目的は弁本体の内壁にしや熱体を微積すること（二
よって達成される。<Distribution of the Invention> The above object is achieved by depositing a small amount of heat-generating material on the inner wall of the valve body.
〈発明の実施例〉 以下、本発明の実施例について説明する。<Embodiments of the invention> Examples of the present invention will be described below.
第２図において、符号１は高温・高圧蒸気の流入口４お
よび流出口ｋを備えた弁本体であって、この弁本体１の
中央には、弁孔ｃｔを形成する弁座８が設けられている
。また、上記流出口６の近傍の上記弁本体ＩＩ−はガイ
ド筒体７が植設されており、このガイド筒体７ Ｃは、
例えば油筒シリンダで作動する弁棒５が摺動自在に軸装
されている。In FIG. 2, reference numeral 1 denotes a valve body equipped with an inlet 4 and an outlet k for high-temperature, high-pressure steam, and a valve seat 8 forming a valve hole ct is provided in the center of the valve body 1. ing. Further, a guide cylinder 7 is implanted in the valve main body II- near the outlet 6, and this guide cylinder 7C is
For example, a valve rod 5 operated by an oil cylinder is slidably mounted.
また、との弁棒５の一端部には弁体６が弁Ｍ８に尚接し
得るようにして設けられており、上記弁体６ｆｉ弁ｅ５
と共に昇降すること（二より、弁孔ｄを開閉し得るよう
になっている。Further, a valve body 6 is provided at one end of the valve stem 5 so that it can still come into contact with the valve M8, and the valve body 6fi valve e5
(Secondly, the valve hole d can be opened and closed.)
他方、上記弁本体１および蓋体２の内周板には、第４図
シニ示すような、しや熱体１００が周設されており、こ
のしや熱体１００は１示のようＣ二補強を兼ねたリブｔ
ｏｏａ、 １００”を有し、その内部が空間番を形成す
るためにチャンネル構造Ｃ二なっている。また、上記弁
本体１および蓋体２ｆ″−は第３図に示すように各連通
孔２００．２０１が上記しゃ熱体１００の空間番に連通
するようにして穿設されている。On the other hand, a heat sink 100 as shown in FIG. Rib t that also serves as reinforcement
ooa. .201 is bored so as to communicate with the space number of the heat shield 100.
しかして上記構成の主蒸気弁装置において、弁体６ｔｉ
油簡シリンダで作動する弁＄ ５１−よって開口し、こ
れ１二よって蒸気発生器からの高温・高圧蒸気が流入口
Ｏを通して弁本体１を加熱する。この間、大気から各遅
過孔２００．２０１を通して取り入れた冷気に、空間番
を縦横に走り、これによってしや熱体１００および弁本
体１を冷却するとと≦二なるから、弁本体Ｉ Ｃ過度な
熱応力を与えることがなくなる。However, in the main steam valve device having the above configuration, the valve body 6ti
A valve 51 operated by an oil cylinder is opened, and high-temperature, high-pressure steam from the steam generator passes through the inlet O and heats the valve body 1. During this time, the cold air taken in from the atmosphere through each delay hole 200, 201 travels across the space number and thereby cools the heating element 100 and the valve body 1. Since ≦2, the valve body IC is excessive. No thermal stress is applied.
このよう６二、弁本体１や蓋体２が肉厚にしなくとも、
急激な温度勾配の発生になくなり、これ６二よって蒸気
タービンは蒸気゛圧力・温度を上昇させて熱効率の向上
を図ることができる。In this way, even if the valve body 1 and lid body 2 are not thick,
This eliminates the occurrence of a sharp temperature gradient, and as a result, the steam turbine can increase the steam pressure and temperature to improve thermal efficiency.
第５図は本発明の他の実施例を示すものであって、弁本
体Ｉに連通孔２０２を穿設し、その内部に連通孔２０２
を基さぐ曲板状のしゃ断体２０３を設けたものであり、
このように手段も上記の実施例とト等の効果を奏する。FIG. 5 shows another embodiment of the present invention, in which a communication hole 202 is bored in the valve body I, and the communication hole 202 is provided inside the valve body I.
A curved plate-shaped breaker 203 is provided,
In this manner, the means also exhibits the same effects as those of the above embodiments.
〈発明の効果〉
以上説明したように、本発明によれば、弁本体寂よび蓋
体の内周壁Ｃ二沿ってしや熱体を周設し、このしや熱体
の空間に連通する遅過孔を上記弁本体感−穿設したので
、蒸気圧力・温度が上昇し、弁本体が極度に加熱されて
も、連通孔を通してしや熱体および弁本体を冷却するか
ら、弁本体は過度な熱応力が発生しないし、１だ弁本体
の肉厚を厚くしなくとも高温・高圧の蒸気に１えること
ができるすぐれた効果を奏する。<Effects of the Invention> As explained above, according to the present invention, a heat sink is provided around the valve body and along the inner circumferential wall C2 of the lid body, and a slow heating element is provided that communicates with the space of the heat sink. Since the through hole is provided in the valve body, even if the steam pressure and temperature rise and the valve body becomes extremely heated, the valve body will cool down through the communication hole, and the valve body will not be overheated. No significant thermal stress is generated, and the valve body has the excellent effect of being able to handle high-temperature, high-pressure steam without increasing the wall thickness of the valve body.
第１図は従来の主蒸気弁装置の実施？＋４を示す縦断面
図、第２図は不発明の主蒸気弁装置の実施例を示す縦断
面図、第３図は第２図の１１１矢視方向切断の＠ｌ！Ｊ
Ｔ面図、第４図は本発明のしゃ熱体の斜視図、第５図は
本発明の他の実施例を示す図である。
１・・・弁本体 ２・・・蓋体５・・・弁＃ｔ
＃６・・・弁体
７・・・ガイド筒体 １００・・・しや熱体ｘｏｏ
ａ、 １００４’−・・リプ ２００．２０１ ・＝
Ｍ通孔第１ＩＢ
第２図
第３図
ろ
第 ４１％ＩFigure 1 shows the implementation of a conventional main steam valve system? +4, FIG. 2 is a vertical cross-sectional view showing an embodiment of the main steam valve device according to the invention, and FIG. 3 is a cross-sectional view taken in the direction of arrow 111 in FIG. J
A T-side view, FIG. 4 is a perspective view of the heat insulator of the present invention, and FIG. 5 is a diagram showing another embodiment of the present invention. 1... Valve body 2... Lid body 5... Valve #t
#6...Valve body 7...Guide cylinder body 100...Shiya heating element xoo
a, 1004'--Rep 200.201 ・=
M hole No. 1 IB Fig. 2 Fig. 3 No. 41% I
Claims (2)
沿ってしや熱体を周設し、このしや熱体Ｃ二連通する連
通孔を上記弁本体に穿設したことを％徴とする主蒸気弁
装置。(1) A heat sink is provided along the inner circumferential wall 62 of the valve body having an inlet and an outlet, and a communication hole is bored in the valve body to communicate with the heat sink C2. Main steam valve device with % sign.
部に空間を有するよう形成したことを特徴とする％計Ｗ
％Ｉ不の範囲第１項記載の主蒸気弁装置０(2) The heating element has both end portions C integrally formed and is formed so as to have a space inside the rib.
Main steam valve device described in item 1, range of %I 0
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP677482A JPS58124009A (en) | 1982-01-21 | 1982-01-21 | Main steam valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP677482A JPS58124009A (en) | 1982-01-21 | 1982-01-21 | Main steam valve device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58124009A true JPS58124009A (en) | 1983-07-23 |
Family
ID=11647515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP677482A Pending JPS58124009A (en) | 1982-01-21 | 1982-01-21 | Main steam valve device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58124009A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007192168A (en) * | 2006-01-20 | 2007-08-02 | Toshiba Corp | Control valve for steam turbine and steam turbine electrical power plant |
| JP2011149474A (en) * | 2010-01-20 | 2011-08-04 | Fuji Koki Corp | Multiway selector valve and heat pump device using the same |
| JP2012141013A (en) * | 2010-12-28 | 2012-07-26 | Mitsubishi Heavy Ind Ltd | Valve chamber casing |
| JP2016183608A (en) * | 2015-03-26 | 2016-10-20 | 三菱日立パワーシステムズ株式会社 | Steam valve device |
-
1982
- 1982-01-21 JP JP677482A patent/JPS58124009A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007192168A (en) * | 2006-01-20 | 2007-08-02 | Toshiba Corp | Control valve for steam turbine and steam turbine electrical power plant |
| JP4619958B2 (en) * | 2006-01-20 | 2011-01-26 | 株式会社東芝 | Steam turbine control valve and steam turbine power plant |
| JP2011149474A (en) * | 2010-01-20 | 2011-08-04 | Fuji Koki Corp | Multiway selector valve and heat pump device using the same |
| JP2012141013A (en) * | 2010-12-28 | 2012-07-26 | Mitsubishi Heavy Ind Ltd | Valve chamber casing |
| JP2016183608A (en) * | 2015-03-26 | 2016-10-20 | 三菱日立パワーシステムズ株式会社 | Steam valve device |
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