JPS5918587B2 - Control valve - Google Patents
Control valveInfo
- Publication number
- JPS5918587B2 JPS5918587B2 JP55076017A JP7601780A JPS5918587B2 JP S5918587 B2 JPS5918587 B2 JP S5918587B2 JP 55076017 A JP55076017 A JP 55076017A JP 7601780 A JP7601780 A JP 7601780A JP S5918587 B2 JPS5918587 B2 JP S5918587B2
- Authority
- JP
- Japan
- Prior art keywords
- plug
- seat
- control valve
- inner hole
- control
- 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
- Lift Valve (AREA)
Description
【発明の詳細な説明】
本発明は、剛性と締切性とに優れ、流体の流量を制御す
る調節弁に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control valve that has excellent rigidity and shutoff performance and controls the flow rate of fluid.
一般に、流体による浸食や摩耗が激しい箇所に使用され
る調節弁のプラグとシートリングには、耐摩耗性材料と
してのセラミックや超硬合金などが使用されており、第
１図は従来におけるこの種の調節弁のシート部を示す断
面図であって、図中１はプラグ、２はシートリングであ
る。In general, wear-resistant materials such as ceramics and cemented carbide are used for the plugs and seat rings of control valves, which are used in areas subject to severe erosion and wear due to fluids. FIG. 2 is a cross-sectional view showing the seat portion of the control valve, in which 1 is a plug and 2 is a seat ring.
ところで、このような従来の調節弁においては、シート
面での締切性を良くするために、プラグ１とシートリン
グ２とのシート部が図中符号ａおよびｂで示すように横
断面が急激に変化する形状となっている。By the way, in such a conventional control valve, in order to improve the sealing performance at the seat surface, the seat portion of the plug 1 and the seat ring 2 has a cross section that is sharply curved as shown by symbols a and b in the figure. It has a changing shape.
したがって、制御中において、プラグＩＫ外力が働いた
り熱応力がかかった場合には、その部分に応力集中が起
り、プラグ１がシート部ａの近傍で折損するという事故
が多く発生していた。Therefore, when an external force or thermal stress is applied to the plug IK during control, stress concentration occurs in that portion, and many accidents occur in which the plug 1 breaks near the seat portion a.
本発明は以上のような点に鑑みなされたもので、シート
リング内孔の開口端に形成した円弧状座面に１これより
も小さな円弧部にて先端のテーパ状制御部と連設された
プラグのテーパ状接座部を対接させて締切りを行なうよ
うに構成することにより、締切性態を失なうことなく、
シかもシート部への応力集中を緩和して耐用度の向上を
図った調節弁を提供するものである。The present invention has been made in view of the above points, and includes an arcuate seat formed at the open end of the inner hole of the seat ring, in which a smaller arcuate portion is connected to the tapered control portion at the tip. By configuring the plug so that the tapered seating portions face each other for closure, the plug does not lose its closure properties.
Moreover, the present invention provides a control valve whose durability is improved by alleviating stress concentration on the seat portion.
以下、本発明を図面に示した実施例を用いて詳細に説明
する。Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.
第２図は本発明に係る調節弁のシート部を示す断面図、
第３図はその要部とする座面と接圧部の拡大断面図であ
る。FIG. 2 is a sectional view showing the seat portion of the control valve according to the present invention;
FIG. 3 is an enlarged cross-sectional view of the main parts of the seat, namely the seat surface and the contact area.
これらの図において、調節弁１１はプラグ１２とシート
リング１３とを備えており、このうちのプラグ１２は、
先端へ向って小径となるテーパ加工が施された制御部１
２ａと、その基部に連設されかつ制御部１２ａから遠ざ
かるにしたがって大径となるテーパ加工が施された接圧
部１２ｂとを備えている。In these figures, the control valve 11 includes a plug 12 and a seat ring 13, of which the plug 12 is
Control part 1 is tapered to become smaller in diameter toward the tip.
2a, and a pressure contact portion 12b which is connected to the base thereof and is tapered to have a larger diameter as it moves away from the control portion 12a.
一方、シートリング１３は、段部を有する円筒状に形成
されていて、プラグ１２先端の制御部１２ａが挿抜され
る内孔１３ａを備えており、この内孔１３ａの径は、プ
ラグ１２０制御部１２ａの基部の直径りとほぼ同径に形
成されている。On the other hand, the seat ring 13 is formed in a cylindrical shape with a step, and includes an inner hole 13a into which the control section 12a at the tip of the plug 12 is inserted and removed. It is formed to have approximately the same diameter as the diameter of the base of 12a.
そして、この内孔１３ａの開口端には、図中符号ｒ２で
示す半径を有する円弧が与えられて座面１３ｂが形成さ
れている。The opening end of this inner hole 13a is provided with a circular arc having a radius indicated by reference numeral r2 in the figure, thereby forming a seat surface 13b.
また、プラグ１２０制御部１２ａと接圧部１２ｂとを形
成する各直線は図中符号ｒ１で示す半径を有する円弧で
滑らかに連続しており、この円弧の半径ｒ１はシートリ
ング１３側の円弧の半径ｒ２よりも小さく設定されてい
る。Further, each straight line forming the plug 120 control part 12a and the pressure contact part 12b is a smoothly continuous circular arc having a radius indicated by the symbol r1 in the figure, and the radius r1 of this circular arc is the same as that of the circular arc on the seat ring 13 side. The radius is set smaller than the radius r2.
以上のごとく構成された調節弁１１において、プラグ１
２０制御部１２ａをシートリング１３の内孔１３ａへ挿
入すると、プラグ１２とシー） ＩＪソング３とは図中
符号Ｐで示す箇所で当接して流体の締切りが行なわれる
。In the control valve 11 configured as described above, the plug 1
When the 20 control unit 12a is inserted into the inner hole 13a of the seat ring 13, the plug 12 and the IJ song 3 come into contact at a location indicated by the symbol P in the figure, thereby shutting off the fluid.
特に、本発明においては、ｒｌをｒ２よりも小さく設定
したので、シートリング１３の座面１３ｂがプラグ１２
の円弧部に当接することなく正しく直線接座部１２ｂに
線接触する。In particular, in the present invention, since rl is set smaller than r2, the seating surface 13b of the seat ring 13 is
Correctly makes line contact with the linear contact portion 12b without coming into contact with the circular arc portion.
そして、この接触部Ｐは、プラグ１２の外径寸法が急激
に変わる部分すなわち外力や熱応力による応力集中の最
も生じ易いプラグ１２の円弧部を避けて接圧部１２ｂの
大径方向へ片寄っているので、プラグ１２が折損するこ
とがない。The contact portion P is biased toward the larger diameter of the pressure contact portion 12b, avoiding the portion where the outside diameter of the plug 12 changes rapidly, that is, the arcuate portion of the plug 12 where stress concentration due to external force or thermal stress is most likely to occur. Therefore, the plug 12 will not break.
さらに、プラグ１２側のｒｌを小さくすることにより、
制御部１２ａが線接触部Ｐを過ぎると内孔１３ａの壁面
へ急激に近寄るので、流体の流量制御も、従来通り高い
精度で行なうことができる。Furthermore, by reducing rl on the plug 12 side,
Since the control part 12a rapidly approaches the wall surface of the inner hole 13a after passing the line contact part P, the flow rate of the fluid can be controlled with high precision as before.
なお、本実施例においては、Ｉ）＝６ｍｍｓｒｌ−”１
、５ｍｍ、 ｒ ２ ＝ ３ ｍｍとして実験を行なっ
たがきわめて良好な結果が得られた。In addition, in this embodiment, I)=6mmsrl−”1
, 5 mm, and r 2 = 3 mm, very good results were obtained.
また、シートリング１３の内孔１３ａの径を多少変更す
る場合でも、ｒ１ｔｒ２の値は上記寸法のま＼で充分で
ある。Further, even if the diameter of the inner hole 13a of the seat ring 13 is slightly changed, it is sufficient that the value of r1tr2 remains the same as described above.
以上の説明により明らかなように、本発明によれば、流
体の流量を制御する調節弁において、シートリング内孔
の開口端に円弧を与えて座面を形成するとともに、これ
に挿抜されるプラグのテーパ状制御部とその基部に連設
されるテーパ状接座部との交わる箇所にシートリング側
の円弧よりも小さい円弧を与えることにより、プラグと
シートリングとが応力集中点を避けて線接触するのでプ
ラグを折損させることがなく弁の耐用度を大幅に向上さ
せることができるとともに、プラグの制御部の外径もシ
ートリングの内孔と略等しく保てるから、流体の制御性
を損うこともない。As is clear from the above description, according to the present invention, in a control valve that controls the flow rate of fluid, an arc is given to the open end of the seat ring inner hole to form a seat surface, and a plug is inserted into and removed from the seat surface. By providing an arc smaller than the arc on the seat ring side at the intersection of the tapered control part and the tapered contact part connected to its base, the plug and seat ring are aligned in a straight line avoiding stress concentration points. Since they are in contact with each other, the durability of the valve can be greatly improved without causing the plug to break, and the outer diameter of the plug's control part can also be kept approximately equal to the inner hole of the seat ring, which prevents fluid controllability from being impaired. Not at all.
第１図は従来における調節弁のシート部を示す断面図、
第２図および第３図は本発明に係る調節弁を示し、第２
図はそのシート部を示す断面図、第３図はその要部とす
る座面と接圧部の拡大断面図である。
１１−０．・・・調節弁、１２・・・・・・プラグ、１
２ａ・・山・制御部、１２ｂ・・・・・・接圧部、１３
・・・・・・シー） ＩＪング、１３ａ・・・・・・内
孔、１３ｂ・・・・・・座面、ｒｌ、ｒ２・・・・・・
円弧の半径。FIG. 1 is a sectional view showing the seat part of a conventional control valve;
2 and 3 show a control valve according to the present invention, and a second
The figure is a cross-sectional view showing the seat part, and FIG. 3 is an enlarged cross-sectional view of the main parts of the seat surface and the contact pressure part. 11-0. ...Control valve, 12...Plug, 1
2a... Mountain/control part, 12b... Pressure contact part, 13
... Sea) IJ ring, 13a... Inner hole, 13b... Seating surface, rl, r2...
radius of the arc.
Claims (1)
ートリングと、前記内孔とほぼ等径の基部を有しその延
長部が円孔に挿抜されるテーパ状の制御部を備えたプラ
グとからなり、前記プラグ先端の制御部とその基部に連
設されたテーパ状の接圧部とを形成する各直線が前記円
弧よりも小さい円弧を介して滑らかに連続するようにし
たことを特徴とする調節弁。1. A seat ring having a seat surface formed in an arc at the open end of the inner hole, and a tapered control portion having a base portion having approximately the same diameter as the inner hole, and an extension portion of which is inserted into and extracted from the circular hole. The straight line forming the control part at the tip of the plug and the tapered contact pressure part connected to the base thereof is smoothly continuous through an arc smaller than the circular arc. A control valve featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55076017A JPS5918587B2 (en) | 1980-06-05 | 1980-06-05 | Control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55076017A JPS5918587B2 (en) | 1980-06-05 | 1980-06-05 | Control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS571868A JPS571868A (en) | 1982-01-07 |
| JPS5918587B2 true JPS5918587B2 (en) | 1984-04-27 |
Family
ID=13593056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55076017A Expired JPS5918587B2 (en) | 1980-06-05 | 1980-06-05 | Control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5918587B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7926745B2 (en) | 2006-11-27 | 2011-04-19 | Mitsubishi Electric Corporation | Fuel injection valve |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19727785B4 (en) * | 1997-06-30 | 2006-04-13 | Robert Bosch Gmbh | Flow control valve for controlling liquids |
-
1980
- 1980-06-05 JP JP55076017A patent/JPS5918587B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7926745B2 (en) | 2006-11-27 | 2011-04-19 | Mitsubishi Electric Corporation | Fuel injection valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS571868A (en) | 1982-01-07 |
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