JPH0637941B2 - Spherical valve - Google Patents
Spherical valveInfo
- Publication number
- JPH0637941B2 JPH0637941B2 JP13903687A JP13903687A JPH0637941B2 JP H0637941 B2 JPH0637941 B2 JP H0637941B2 JP 13903687 A JP13903687 A JP 13903687A JP 13903687 A JP13903687 A JP 13903687A JP H0637941 B2 JPH0637941 B2 JP H0637941B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- shaft
- valve body
- valve shaft
- flange
- 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 - Lifetime
Links
Landscapes
- Taps Or Cocks (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は高落差水車用入口弁、揚水発電所用主止め弁等
に好適な球形弁に関する。TECHNICAL FIELD The present invention relates to a spherical valve suitable for an inlet valve for a high head turbine, a main stop valve for a pumped storage power plant, and the like.
（従来の技術） 従来のこの種球形弁の一例が第３図ないし第５図に示さ
れ、第３図は第４図のIII−III線に沿う縦断面図、第４
図は第３図のIV−IV線に沿う横断面図、第５図は第３図
のＶ−Ｖ矢に沿う矢視図である。(Prior Art) An example of a conventional spherical valve of this type is shown in FIGS. 3 to 5, and FIG. 3 is a longitudinal sectional view taken along line III-III of FIG.
The drawing is a transverse sectional view taken along the line IV-IV in FIG. 3, and FIG. 5 is a view taken along the arrow VV in FIG.
第３図ないし第５図において、１は円柱状の流路1aを具
えた弁体で、１対の軸弁軸２、３により弁胴４内に回動
可能に支持されている。In FIGS. 3 to 5, reference numeral 1 denotes a valve body having a cylindrical flow path 1a, which is rotatably supported in the valve body 4 by a pair of shaft valve shafts 2 and 3.
弁軸２、３は弁胴４に溶接された弁軸支持環５を貫通し
て外部に突出せしめられ、そのいずれか一方、即ち、弁
軸２の突出端にはレバー６がキー７によって固定されて
いる。The valve shafts 2 and 3 penetrate the valve shaft support ring 5 welded to the valve body 4 and are projected to the outside. One of them, that is, the protruding end of the valve shaft 2, has a lever 6 fixed by a key 7. Has been done.
弁軸２、３の内端にはフランジ８が設けられ、このフラ
ンジ８の内端面は弁体１の長手方向中央部の外周面に当
接せしめられ、これら内端面と外周面に跨がってキー９
を楔合させた状態で複数のボルト10を弁体１の流体流路
1a側から弁体１を貫通させてフランジ８に螺入すること
により弁軸２、３は弁体１に締結される。A flange 8 is provided on the inner ends of the valve shafts 2 and 3, and the inner end surface of the flange 8 is brought into contact with the outer peripheral surface of the central portion of the valve body 1 in the longitudinal direction, and the flange 8 extends over the inner end surface and the outer peripheral surface. Key 9
The plurality of bolts 10 in the state where the
The valve shafts 2 and 3 are fastened to the valve body 1 by penetrating the valve body 1 from the 1a side and screwing it into the flange 8.
弁軸２、３が弁軸支持環５を貫通する部分には、弁軸
２、３を軸支するためのブッシュ11、漏水を防止するた
めのＯリングとＵパッキンよりなるシール装置12、弁軸
2、3に作用する軸推力を支持するためのオイレススラス
ト軸受13が配設され、これらはパッキン押え14によって
保持されている。In a portion where the valve shafts 2 and 3 penetrate the valve shaft support ring 5, a bush 11 for pivotally supporting the valve shafts 2 and 3, a sealing device 12 including an O ring and U packing for preventing water leakage, a valve axis
An OILES thrust bearing 13 for supporting the axial thrust acting on the second and third units is provided, and these are held by a packing retainer 14.
弁体１のシート部には弾性材からなるパッキン15がパッ
キン押え16によって固定されており、図示の弁閉状態に
おいてこのパッキン15が弁胴4の弁座部4aに密着して流
水を遮断する。A packing 15 made of an elastic material is fixed to the seat portion of the valve body 1 by a packing presser 16. The packing 15 is in close contact with the valve seat portion 4a of the valve body 4 to shut off running water in the valve closed state shown in the drawing. .
レーバ６によって弁軸２を矢印方向90゜回動すると、弁
体２は破線に示す位置を占め、流水は白抜矢印に示す示
すように弁体の円柱状の流路1a内を流過する。When the valve shaft 2 is rotated 90 ° in the direction of the arrow by the lever 6, the valve body 2 occupies the position shown by the broken line, and the flowing water flows through the cylindrical flow passage 1a of the valve body as shown by the white arrow. .
（発明が解決しようとする問題点） 上記従来の球形弁において、弁体１を開閉する際、極め
て大きなトルクが弁軸２に加えられるが、このトルクは
キー９を介して弁体１に伝達されるため、大型のキー９
を要し、このキー９を収容するための大型のキー溝によ
り切り欠き効果によってこの部分の弁軸２及び弁体１の
強度が低下する。また、弁軸２には水圧によって弁胴４
の外側へ向かう約200トン以上の軸推力が作用し、この
軸推力はボルト10で負担されるため、ボルト10の径及び
数を増大しなければならないという問題があった。(Problems to be Solved by the Invention) In the conventional spherical valve described above, an extremely large torque is applied to the valve shaft 2 when the valve body 1 is opened and closed, but this torque is transmitted to the valve body 1 via the key 9. The large key 9
The large key groove for accommodating the key 9 reduces the strength of the valve shaft 2 and the valve body 1 in this portion due to the notch effect. In addition, the valve shaft 2 has a valve body 4 which is hydraulically actuated.
There is a problem that the axial thrust of about 200 tons or more acting toward the outside of the bolt acts and the axial thrust is carried by the bolt 10, so that the diameter and the number of the bolt 10 must be increased.
（問題点を解決するための手段） 本発明は上記問題点に対処するために発明されたもので
あって、その要旨とするところは、円柱状の流路を具え
た弁体が一対の弁軸により弁胴内に回動可能に支持され
た球形弁において、上記弁体に上記弁軸が貫通する軸穴
を設けるとともに上記弁軸の内端にフランジを設け、上
記弁軸を上記弁体の流路側から上記軸穴内に挿入して上
記軸穴と弁軸との接触面を弁軸の軸芯方向に伸びる楔を
介して楔合させたことを特徴とする球形弁にある。(Means for Solving Problems) The present invention has been invented in order to solve the above problems, and the gist of the present invention is that a valve body having a cylindrical flow path has a pair of valves. In a spherical valve rotatably supported in a valve body by a shaft, a shaft hole through which the valve shaft penetrates is provided in the valve body, and a flange is provided at an inner end of the valve shaft. The spherical valve is characterized in that the contact surface between the shaft hole and the valve shaft is wedged through a wedge extending in the axial direction of the valve shaft by being inserted into the shaft hole from the flow path side.
（作用） 本発明においては上記構成を具えているため、弁を開閉
するためのトルクは弁軸から弁軸の軸芯方向に伸びる楔
を介して弁体に伝達され、また、水圧によって弁軸に作
用する弁胴の外側に向かう軸推力はフランジによって負
担される。(Operation) Since the present invention has the above-mentioned configuration, the torque for opening and closing the valve is transmitted to the valve body through the wedge extending from the valve shaft in the axial direction of the valve shaft, and the valve shaft is also hydraulically actuated. Axial thrust acting on the outside of the valve body is carried by the flange.
（実施例） 本発明の１実施例が第１図及び第２図に示されている。
弁体１には弁軸２が貫通する軸穴20が穿設され、弁軸２
の内端にはフランジ21が設けられている。弁軸は弁体１
の流路1a側から軸穴20に挿入され、弁軸支持環５を貫通
して外部に突出する。この状態において、弁軸２の内端
に形成されたフランジ21は弁体１の流路1a壁に刻設され
た凹所22内に嵌合し、このフランジ21を貫通する複数の
ボルト23を弁軸２に螺入することによって弁体１と弁軸
２は相互に締結される。次いで、軸穴20の内周面及びこ
れに接触する弁軸２の外周面に跨がって弁軸２の軸芯方
向に伸びる複数（図には４個）のテーパピン24が挿着さ
れる。(Embodiment) One embodiment of the present invention is shown in FIG. 1 and FIG.
The valve body 1 is provided with a shaft hole 20 through which the valve shaft 2 penetrates.
A flange 21 is provided at the inner end of the. The valve stem is the valve body 1
Is inserted into the shaft hole 20 from the side of the flow path 1a, penetrates the valve shaft support ring 5, and projects to the outside. In this state, the flange 21 formed on the inner end of the valve shaft 2 is fitted into the recess 22 formed in the wall of the flow passage 1a of the valve body 1, and the plurality of bolts 23 penetrating the flange 21 are inserted. The valve body 1 and the valve shaft 2 are fastened to each other by being screwed into the valve shaft 2. Next, a plurality of (four in the figure) taper pins 24 extending in the axial direction of the valve shaft 2 are inserted and attached across the inner peripheral surface of the shaft hole 20 and the outer peripheral surface of the valve shaft 2 that is in contact therewith. .
他の構成は第３図ないし第５図に示す従来の球形弁と同
様であり、対応する部材には同じ符号が付されている。The other structure is similar to that of the conventional spherical valve shown in FIGS. 3 to 5, and corresponding members are designated by the same reference numerals.
なお、非駆動側の弁軸３は上記と同様の構造で弁体１に
結合することができるが、大きなトルクが作用しないの
でテーパピン２４の数は少なくても足りる。また、非駆
動側の弁軸３は第３図ないし第５図に示す従来のものと
同じ構造で弁体１に結合しても良い。The non-driving side valve shaft 3 can be coupled to the valve body 1 with the same structure as described above, but since a large torque does not act, the number of taper pins 24 may be small. Further, the valve shaft 3 on the non-driving side may be connected to the valve body 1 by the same structure as the conventional one shown in FIGS. 3 to 5.
しかして、弁の開閉するための大きなトルクはレバー６
から弁軸２に与えられるが、このトルクは複数のテーパ
ピン24を介して弁体１に伝達される。テーパピン24は弁
軸２の軸芯方向に伸びているため、このトルクの伝達に
与るテーパピン24の断面積が大きく、従って、テーパピ
ン24に作用する剪断力を極めて小さくすることができ
る。水圧によって弁軸２に作用する弁胴４の外側に向か
う軸推力はフランジ21によって負担され、ボルト23には
この軸推力が作用することはないので、ボルト23の数を
減らし又はその径を小さくすることができる。なお、上
記実施例においてはテーパピン24が用いられているが、
これに代えて弁軸２の軸芯方向に伸びるキー又はスプラ
イン等の楔を用いることができる。Therefore, the large torque for opening and closing the valve is the lever 6
The torque is transmitted to the valve body 1 through the plurality of taper pins 24. Since the taper pin 24 extends in the axial direction of the valve shaft 2, the taper pin 24 has a large cross-sectional area that contributes to the transmission of this torque. Therefore, the shearing force acting on the taper pin 24 can be made extremely small. The axial thrust force acting on the valve shaft 2 toward the outside of the valve body 4 due to the water pressure is borne by the flange 21, and this axial thrust force does not act on the bolts 23. Therefore, the number of the bolts 23 is reduced or the diameter thereof is reduced. can do. Although the taper pin 24 is used in the above embodiment,
Instead of this, a wedge such as a key or a spline extending in the axial direction of the valve shaft 2 can be used.
（発明の効果） 本発明においては弁体に上記弁軸が貫通する軸穴を設け
るとともに上記弁軸の内端にフランジを設け、上記弁軸
を上記弁体の流路側から上記軸穴内に挿入して上記軸穴
と弁軸との接触面を弁軸の軸芯方向に伸びる楔を介して
楔合させたため、弁を開閉するためのトルクは弁軸から
楔を介して弁体に伝達され、また、水圧によって弁軸に
作用する弁胴の外側に向かう軸推力はフランジによって
負担される。(Effects of the Invention) In the present invention, a valve body is provided with a shaft hole through which the valve shaft passes, and a flange is provided at the inner end of the valve shaft, and the valve shaft is inserted into the shaft hole from the flow passage side of the valve body. Since the contact surface between the shaft hole and the valve shaft is wedged via the wedge extending in the axial direction of the valve shaft, the torque for opening and closing the valve is transmitted from the valve shaft to the valve body via the wedge. Also, the axial thrust toward the outside of the valve body that acts on the valve shaft by water pressure is carried by the flange.
従って、弁軸と弁体の結合部の信頼性が向上するのみな
らずこの結合部の加工費及び組立費が減少するので、球
形弁のコストを低減することができる。Therefore, not only the reliability of the joint between the valve shaft and the valve body is improved, but also the processing cost and the assembly cost of this joint are reduced, so that the cost of the spherical valve can be reduced.
第１図及び第２図は本発明の１実施例を示し、第１図は
本発明の要部を示す部分的縦断面図、第２図は第１図の
II−II線に沿う矢視図である。第３図ないし第５図は従
来の球形弁の１例を示し、第３図は第４図のIII−III線
に沿う縦断面図、第４図は第３図のIV−IV線に沿う横断
面図、第５図は第３図のＶ−Ｖ線に沿う矢視図である。 弁体……１、流路……1a、弁軸……２、弁胴……４、軸
穴……２０、フランジ……21、楔……241 and 2 show one embodiment of the present invention, FIG. 1 is a partial vertical sectional view showing an essential part of the present invention, and FIG.
It is an arrow line view which follows the II-II line. 3 to 5 show an example of a conventional spherical valve, FIG. 3 is a longitudinal sectional view taken along line III-III in FIG. 4, and FIG. 4 is taken along line IV-IV in FIG. FIG. 5 is a cross-sectional view, and FIG. 5 is a view taken along the line VV of FIG. Valve body …… 1, flow path …… 1a, valve shaft …… 2, valve body …… 4, shaft hole …… 20, flange …… 21, wedge …… 24
Claims (1)
より弁胴内に回動可能に支持された球形弁において、上
記弁体に上記弁軸が貫通する軸穴を設けるとともに上記
弁軸の内端にフランジを設け、上記弁軸を上記弁体の流
路側から上記軸穴内に挿入して上記軸穴と弁軸との接触
面を弁軸の軸芯方向に伸びる楔を介して楔合させたこと
を特徴とする球形弁。1. A spherical valve in which a valve body having a cylindrical flow path is rotatably supported in a valve body by a pair of valve shafts, and a shaft hole through which the valve shaft passes is provided in the valve body. A flange is provided at the inner end of the valve shaft, and the valve shaft is inserted into the shaft hole from the flow path side of the valve body so that the contact surface between the shaft hole and the valve shaft extends in the axial direction of the valve shaft. A spherical valve characterized by being wedged together through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13903687A JPH0637941B2 (en) | 1987-06-04 | 1987-06-04 | Spherical valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13903687A JPH0637941B2 (en) | 1987-06-04 | 1987-06-04 | Spherical valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63303275A JPS63303275A (en) | 1988-12-09 |
| JPH0637941B2 true JPH0637941B2 (en) | 1994-05-18 |
Family
ID=15235960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13903687A Expired - Lifetime JPH0637941B2 (en) | 1987-06-04 | 1987-06-04 | Spherical valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0637941B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0456272U (en) * | 1990-09-25 | 1992-05-14 |
-
1987
- 1987-06-04 JP JP13903687A patent/JPH0637941B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63303275A (en) | 1988-12-09 |
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