JPH0240152B2 - KEEJIBEN - Google Patents
KEEJIBENInfo
- Publication number
- JPH0240152B2 JPH0240152B2 JP15901584A JP15901584A JPH0240152B2 JP H0240152 B2 JPH0240152 B2 JP H0240152B2 JP 15901584 A JP15901584 A JP 15901584A JP 15901584 A JP15901584 A JP 15901584A JP H0240152 B2 JPH0240152 B2 JP H0240152B2
- Authority
- JP
- Japan
- Prior art keywords
- cage
- valve
- valve plug
- fluid passage
- plug
- 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
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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
- Details Of Valves (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、ケージ内を摺動する弁プラグの振動
を防止する機能を備えたケージ弁に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a cage valve having a function of preventing vibration of a valve plug sliding inside the cage.
従来、この種のケージ弁は第１図に示すように
構成されており、これを同図に基づいて概略説明
すると、封号１で示すものは円筒状のケージで、
周壁２に複数の流体通過用窓３が穿設されてお
り、これら窓３の上下には口径が異なる弁座４，
５が設けられている。６は弁軸７により上下方向
に摺動する弁プラグで、前記ケージ１内に進退自
在に配設されており、外周面には前記両弁座４，
５にそれぞれ着座可能な着座部８，９が設けられ
ている。これにより、前記流体通過用窓３の開口
面積を変化させ流量制御が行われる。１０は前記
弁プラグ６の上下を連通する貫通孔で、弁プラグ
６の上部に穿設されており、これにより、上下両
側に生じる圧力差を小さくし、前記弁軸７を介し
て隔絶された位置に配設される駆動部（図示せ
ず）にかかる負荷を減少させている。１１は前記
プラグ側に開口する環状溝で、前記ケージ１内周
面の前記上側弁座４と流体通過用窓３間に設けら
れており、ケージ１の内周面と弁プラグ６の外周
面間に侵入する流体が圧力降下して上方に浸透し
ないように構成されている。これによりケージ１
内における弁プラグ６の振動を防止している。
Conventionally, this type of cage valve has been constructed as shown in FIG.
A plurality of fluid passage windows 3 are bored in the peripheral wall 2, and above and below these windows 3 are valve seats 4 with different diameters,
5 is provided. Reference numeral 6 denotes a valve plug that slides vertically on a valve shaft 7, and is disposed in the cage 1 so as to be able to move forward and backward, and has both valve seats 4,
5 are provided with seating portions 8 and 9 on which the user can sit, respectively. Thereby, the opening area of the fluid passage window 3 is changed to control the flow rate. Reference numeral 10 denotes a through hole that communicates between the upper and lower parts of the valve plug 6, which is bored in the upper part of the valve plug 6, thereby reducing the pressure difference generated on both the upper and lower sides, and separating the two through the valve shaft 7. This reduces the load on a drive unit (not shown) disposed at the location. Reference numeral 11 denotes an annular groove that opens toward the plug, and is provided between the upper valve seat 4 and the fluid passage window 3 on the inner circumferential surface of the cage 1, and is provided between the inner circumferential surface of the cage 1 and the outer circumferential surface of the valve plug 6. The structure is such that the fluid that enters between them does not seep upward due to a pressure drop. This allows cage 1
This prevents the valve plug 6 from vibrating inside.
ところが、従来のケージ弁においては、弁プラ
グが僅かに上昇した小開度時には弁プラグ６の振
動を防止することができても、全開度時あるいは
ケージ１の内周面と弁プラグ６の外周面間に高差
圧の流体が侵入した時には、その振動を防止する
ことができなかつた。 However, in conventional cage valves, although vibration of the valve plug 6 can be prevented when the valve plug is slightly raised at a small opening, when the valve plug is fully opened or when the inner peripheral surface of the cage 1 and the outer periphery of the valve plug 6 When fluid with a high differential pressure entered between the surfaces, it was not possible to prevent the vibration.
〔発明の概要〕
本発明はこのような事情に鑑みなされたもの
で、ケージ内周面または弁プラグ外周面に全周に
わたり深さが同一で溝幅が異なる環状溝を設ける
というきわめて簡単な構成により、ケージ内の弁
プラグの振動を確実に防止できるケージ弁を提供
するものである。以下、その構成等を図に示す実
施例によつて詳細に説明する。[Summary of the Invention] The present invention has been made in view of the above circumstances, and has an extremely simple structure in which an annular groove having the same depth and different groove widths is provided over the entire circumference on the inner peripheral surface of the cage or the outer peripheral surface of the valve plug. This provides a cage valve that can reliably prevent vibration of the valve plug within the cage. Hereinafter, the configuration and the like will be explained in detail with reference to embodiments shown in the drawings.
第２図は本発明に係るケージ弁のケージを示す
断面図、第３図は第２図の−断面図である。
同図以下において第１図と同一の部材については
同一の符号を付し、詳細な説明は省略する。同図
において、２１は前記プラグ側に開口する環状溝
で、前記ケージ１の内周面であつて流体通過用窓
３と上側の弁座４間に設けられている。この環状
溝２１は全周にわたり同一の深さで異なる溝幅を
有しており、例えば前記弁プラグ６の片側外周面
に対向する部分の溝幅w1はその反対側外周面に
対向する部分の溝幅w2より大きく設定されてい
る。
FIG. 2 is a cross-sectional view showing the cage of the cage valve according to the present invention, and FIG. 3 is a cross-sectional view taken from FIG.
In the following figures, the same members as in FIG. 1 are denoted by the same reference numerals, and detailed explanations will be omitted. In the figure, reference numeral 21 denotes an annular groove that opens toward the plug and is provided on the inner circumferential surface of the cage 1 between the fluid passage window 3 and the upper valve seat 4. This annular groove 21 has the same depth and different groove widths over the entire circumference. For example, the groove width w 1 of the portion facing the outer peripheral surface on one side of the valve plug 6 is different from the groove width w 1 of the portion facing the outer peripheral surface of the opposite side. The groove width w is set larger than 2 .
このように構成されたケージ弁においては、弁
開時すなわち弁座４，５と着座部８，９が離間し
た時に、流体が流体用通過窓３を通過した後、弁
座５と着座部９との間を通過して送出口１ａに致
る流ねＡと、弁プラグ６の外周面とケージ１の内
周面間の間隙を通過し、弁座４と着座部８との間
を流過して弁プラグ６の上方に侵入し、弁プラグ
６内に至り流れＡに合流するＢとに分流する。こ
のとき、大きい溝幅w1をもつ環状溝２１内を含
を弁プラグ６とケージ１との間を多くの流体が流
過するため、弁プラグ６の周囲に圧力差を生じ、
この圧力差によつて弁プラグ６を一方向に押圧す
る。すなわち、流体による単位面積当たりの押圧
力が同じでも溝幅の大きい部分の全押圧力が高く
なるからである。 In the cage valve configured in this way, when the valve is opened, that is, when the valve seats 4, 5 and the seating portions 8, 9 are separated, after the fluid passes through the fluid passage window 3, the valve seat 5 and the seating portion 9 are separated. Flow A passes between the valve plug 6 and the inner circumferential surface of the cage 1, and flows between the valve seat 4 and the seat 8. The flow enters the upper part of the valve plug 6, reaches inside the valve plug 6, and is divided into flow B, which joins flow A. At this time, a large amount of fluid flows between the valve plug 6 and the cage 1, including in the annular groove 21 having a large groove width w1 , so a pressure difference is generated around the valve plug 6.
This pressure difference pushes the valve plug 6 in one direction. That is, even if the pressing force per unit area by the fluid is the same, the total pressing force is higher in the portion where the groove width is larger.
したがつて、流体が弁プラグ６とケージ１間の
間隙を流過している間は、流体に圧力変動があつ
ても弁プラグ６を一方向に押圧する状態が解除さ
れることはほとんどない。 Therefore, while the fluid is flowing through the gap between the valve plug 6 and the cage 1, even if there is a pressure fluctuation in the fluid, the state of pressing the valve plug 6 in one direction is almost never released. .
なお、本実施例においては、環状溝２１が全周
にわたり同一の深さで形成されているため、ケー
ジ１の肉厚に負担をかけず製作を容易に行える効
果を有する。 In addition, in this embodiment, since the annular groove 21 is formed to have the same depth over the entire circumference, there is an effect that the cage 1 can be manufactured easily without imposing a burden on the wall thickness.
また、本実施例においては、環状溝２１がケー
ジ１の内周面であつて流体通過用窓３と上側弁座
４間に設けられている例を示したが、本発明はこ
れに限定されるものではなく、第４図および第５
図に示すように環状溝２２を弁プラグ６の外周面
であつて両着座部８，９間に設けても実施例と同
様の効果を奏する。この場合、環状溝２２は全周
にわたり異なる溝幅を有し深さが同一に形成され
ていることは言うまでもない。 Furthermore, in this embodiment, an example is shown in which the annular groove 21 is provided on the inner peripheral surface of the cage 1 and between the fluid passage window 3 and the upper valve seat 4, but the present invention is not limited to this. Figures 4 and 5.
As shown in the figure, even if an annular groove 22 is provided on the outer circumferential surface of the valve plug 6 between the seating portions 8 and 9, the same effect as in the embodiment can be obtained. In this case, it goes without saying that the annular groove 22 is formed to have different groove widths and the same depth over the entire circumference.
以上説明したように本発明によれば、ケージ内
周面の流体通過用窓と上側弁座間または弁プラグ
外周面の両着座部間に全周にわたり深さが同一で
溝幅が異なる環状溝を設けたので、弁プラグの外
周面とケージの内周面間の間隙に侵入する流体に
よる流体圧力差によつて弁プラグを一方向に押圧
してケージ内における弁プラグの振動を確実に防
止することができる。
As explained above, according to the present invention, an annular groove having the same depth and different groove widths is formed over the entire circumference between the fluid passage window on the inner circumferential surface of the cage and the upper valve seat or between both seating portions on the outer circumferential surface of the valve plug. Since this is provided, the valve plug is pushed in one direction by the fluid pressure difference caused by the fluid that enters the gap between the outer circumferential surface of the valve plug and the inner circumferential surface of the cage, thereby reliably preventing vibration of the valve plug within the cage. be able to.
第１図は従来のケージ弁を示す断面図、第２図
は本発明に係るケージ弁のケージを示す断面図、
第３図は第２図の−断面図、第４図は他の実
施例を示す断面図、第５図は第４図の−断面
図である。
１……ケージ、２……周壁、３……流体通過用
窓、４，５……弁座、６……弁プラグ、８，９…
…着座部、２１……環状溝。
FIG. 1 is a sectional view showing a conventional cage valve, FIG. 2 is a sectional view showing a cage of a cage valve according to the present invention,
FIG. 3 is a cross-sectional view along the line shown in FIG. 2, FIG. 4 is a cross-sectional view showing another embodiment, and FIG. 5 is a cross-sectional view along the line shown in FIG. DESCRIPTION OF SYMBOLS 1... Cage, 2... Peripheral wall, 3... Fluid passage window, 4, 5... Valve seat, 6... Valve plug, 8, 9...
...Seating portion, 21...Annular groove.
Claims (1)
の上下に設けられかつ口径が異なる弁座を有する
円筒状のケージと、このケージ内に進退自在に配
設され前記両弁座にそれぞれ着座可能な着座部を
有する弁プラグとを備えたケージ弁において、前
記ケージ内周面の流体通過用窓と上側弁座間また
は前記弁プラグ外周面の両着座部間に全周にわた
り深さが同一で溝幅が異なる環状溝を設けたこと
を特徴とするケージ弁。1. A fluid passage window provided on the peripheral wall, a cylindrical cage provided above and below this window and having valve seats of different diameters, and a cylindrical cage that is arranged to move forward and backward within this cage and can be seated on both of the valve seats, respectively. In the cage valve, a groove having the same depth over the entire circumference between the fluid passage window and the upper valve seat on the inner peripheral surface of the cage or between both seating parts on the outer peripheral surface of the valve plug is provided. A cage valve characterized by having annular grooves with different widths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15901584A JPH0240152B2 (en) | 1984-07-31 | 1984-07-31 | KEEJIBEN |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15901584A JPH0240152B2 (en) | 1984-07-31 | 1984-07-31 | KEEJIBEN |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6138272A JPS6138272A (en) | 1986-02-24 |
| JPH0240152B2 true JPH0240152B2 (en) | 1990-09-10 |
Family
ID=15684381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15901584A Expired - Lifetime JPH0240152B2 (en) | 1984-07-31 | 1984-07-31 | KEEJIBEN |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0240152B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1004216C2 (en) * | 1996-10-07 | 1997-08-28 | Hovap Int Bv | Stop valve. |
| US7055548B2 (en) | 2003-05-30 | 2006-06-06 | Fisher Controls International Llc | Control valve trim and seat design for valve trim with minimal unbalanced area |
-
1984
- 1984-07-31 JP JP15901584A patent/JPH0240152B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6138272A (en) | 1986-02-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |