JPS6030878A - Cage valve - Google Patents
Cage valveInfo
- Publication number
- JPS6030878A JPS6030878A JP13707083A JP13707083A JPS6030878A JP S6030878 A JPS6030878 A JP S6030878A JP 13707083 A JP13707083 A JP 13707083A JP 13707083 A JP13707083 A JP 13707083A JP S6030878 A JPS6030878 A JP S6030878A
- Authority
- JP
- Japan
- Prior art keywords
- valve plug
- valve
- cage
- plug
- hole
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Sliding Valves (AREA)
Abstract
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、１は円
筒状のケージで、周壁２に流体通過用窓３が複数個穿設
されておシ、この窓３の上下には口径が異なる弁座４，
５が設けられている。Conventionally, this type of cage valve has been constructed as shown in FIG. There are valve seats 4 with different diameters on the top and bottom of this window 3,
5 is provided.
６は弁軸７によシ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シ、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。これによシ前記流体通過用窓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上部に穿設さ
れておシ、これによって上下両側に生じる圧力差を小さ
くし、前記弁軸Ｔ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。１
１は前記ケージ１内側に開口する現状溝で、ケージ１の
内周面における前記上側の弁座４と窓３間に設けられて
おシ、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部に浸透しないように構成さ
れている。これによシケージ１内における弁プラグ６の
振動を防止している。Reference numeral 6 denotes a valve plug that slides in the vertical direction on the valve shaft 7, and is disposed in the cage 1 so as to be able to move forward and backward, and has seats on the outer peripheral surface that can be seated on both the valve seats 4 and 5, respectively. Sections 8 and 9 are provided. 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 sides of the valve plug 6, and allowing the valve shaft T to communicate with the upper and lower parts of the valve plug 6. This reduces the load on the drive unit (not shown) disposed in the drive unit. 1
Reference numeral 1 denotes a current groove that opens inside the cage 1, and is provided between the upper valve seat 4 and the window 3 on the inner circumferential surface of the cage 1, and is located 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 will not seep into the upper part due to a pressure drop. This prevents the valve plug 6 from vibrating within the cage 1.
しかるに、従来のケージ弁において、弁プラグ６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ｖ
」：その振動を防止することができないという不、都合
がある。However, in the conventional cage valve, although it is possible to prevent vibration of the valve plug 6 when the valve plug 6 is slightly raised at a small opening, when the valve plug 6 is fully opened or when the inner peripheral surface of the cage 1 and the valve plug 6 are When fluid with high differential pressure enters between the outer peripheral surfaces, v
”: There is a disadvantage that the vibration cannot be prevented.
本発明はこのような事情に鑑みなされたもので、弁プラ
グの外周面に設けた環状溝内に貫通する内通孔を弁プラ
グの片側周壁に穿設するというきわめて簡単な構成によ
υ、ケージ内における弁プラグの］辰動を確実に防止で
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って詳細に説明する。The present invention has been made in view of the above circumstances, and has an extremely simple structure in which an internal through hole penetrating an annular groove provided on the outer circumferential surface of the valve plug is bored in one side circumferential wall of the valve plug. To provide a cage valve that can reliably prevent sliding of a 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を示す断面図、第３図は
第２図のＩＩＩ−ＩＩＩ断面図で、これらの図において
第１０と同一の部材については同一の符号を付し、詳細
な説明は詳略する。２１はその溝底２２が前記ケージ１
の周壁２に対向する環状溝で、前記弁プラグ６の外周面
であって、前記上側着座部８の上方に設けられている。FIG. 2 is a sectional view showing a cage valve according to the present invention, and FIG. 3 is a sectional view taken along III-III in FIG. The detailed explanation will be omitted. 21 has a groove bottom 22 that is connected to the cage 1.
An annular groove facing the peripheral wall 2 of the valve plug 6 and provided above the upper seating portion 8 on the outer peripheral surface of the valve plug 6 .
２３はこの環状溝２１円から前記弁プラグ６内に貫通す
る内通孔で、弁プラグ６の片側周壁２４に穿設されてい
る。Reference numeral 23 denotes an internal hole passing through the annular groove 21 into the valve plug 6, and is bored in the peripheral wall 24 of one side of the valve plug 6.
このように構成されたケージ弁において、弁開時すなわ
ち弁座４，５と着座部８，９が離間した時は、流体が窓
３を通過した後、弁座５に着座部９との間を流過して送
出口１ａに至る流れＡと、弁プラグ６の外周面とケージ
１の内周面間の間［；セを通過し、弁座４と着座部８と
の間を流過して弁プラグ６の上方空室２５に侵入し、ｎ
通孔１０を通過して弁プラグ６内に至り流れ八に合流す
る流れＢとに分流する。このとき、貫通孔１０から弁プ
ラグ６内に流入した流れＢの一部は、弁プラグ６内と間
隙２６とに生じる圧力差によって内通孔２３を通過して
間隙２６に流入する。これによシ弁プラグ６の周囲に圧
力差が生じて弁プラグ６を一方向に作用する。In the cage valve configured in this way, when the valve is opened, that is, when the valve seats 4, 5 and the seating parts 8, 9 are separated, after the fluid passes through the window 3, the gap between the valve seat 5 and the seating parts 9 is The flow A flows between the outer circumferential surface of the valve plug 6 and the inner circumferential surface of the cage 1; and enters the upper cavity 25 of the valve plug 6, n
It passes through the through hole 10, enters the valve plug 6, and separates into a flow B which joins the flow 8. At this time, a part of the flow B that has flowed into the valve plug 6 from the through hole 10 passes through the inner through hole 23 and flows into the gap 26 due to the pressure difference generated between the inside of the valve plug 6 and the gap 26 . This creates a pressure difference around the valve plug 6, which acts on the valve plug 6 in one direction.
したがって、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、流体に圧力変動がちつても、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 in which the valve plug 6 is pressed in one direction is almost never released.
以上説明したように本発明によれば、弁プラグの外周面
に環状溝を設けると共に、この溝内からプラグ内へ貫通
する内通孔を弁プラグの片側周壁に穿設したので、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って弁プラグを一方向に作用して
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 is provided on the outer circumferential surface of the valve plug, and an internal through hole penetrating from the groove into the plug is bored in one side circumferential wall of the valve plug. The fluid pressure difference caused by the fluid entering the gap between the outer peripheral surface and the inner peripheral surface of the cage acts on the valve plug in one direction, thereby reliably preventing vibration of the valve plug within the cage.
第１図は従来のケージ弁を示す断面図、第２図は本発明
に係るケージ弁を示す断面図、第３図は第２図のａｔ−
ｍ断面図である。
ｉ ＊＊・・ケージ、２・拳・・周壁、３・・・・流体
通過用窓、４，５・争・・弁座、６−・・・弁プラグ、
８，９・拳・・着座部、２１・・Φ・環状溝、２３・φ
・・内通孔、２４・・ｍ−周壁。FIG. 1 is a sectional view showing a conventional cage valve, FIG. 2 is a sectional view showing a cage valve according to the present invention, and FIG.
FIG. i **...cage, 2...fist...peripheral wall, 3...fluid passage window, 4, 5...valve seat, 6-...valve plug,
8,9・Fist・Seating part, 21・φ・Annular groove, 23・φ
...Inner hole, 24...m-periphery wall.
Claims (1)
けられかつ口径の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、前記弁プラグの外周面であって、前記上
側着座部の上方に環状溝を設けると共に２この溝内から
プラグ内へ貫通する内通孔を前記弁プラグの片側周壁に
穿設したことを特徴とするケージ弁。A fluid passage window bored in 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 movable forward and backward within this cage and can be seated on both of the valve seats, respectively. 2. A cage valve comprising a valve plug having a seating portion, wherein an annular groove is provided on the outer circumferential surface of the valve plug above the upper seating portion, and an internal through hole passing from the inside of the groove to the inside of the plug. A cage valve characterized in that a hole is formed in one side circumferential wall of the valve plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13707083A JPS6030878A (en) | 1983-07-27 | 1983-07-27 | Cage valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13707083A JPS6030878A (en) | 1983-07-27 | 1983-07-27 | Cage valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6030878A true JPS6030878A (en) | 1985-02-16 |
| JPH0218470B2 JPH0218470B2 (en) | 1990-04-25 |
Family
ID=15190194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13707083A Granted JPS6030878A (en) | 1983-07-27 | 1983-07-27 | Cage valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6030878A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100474659B1 (en) * | 2002-01-25 | 2005-03-08 | 주식회사 동강금속 | Valve seat corrosion interruption structure of valve |
-
1983
- 1983-07-27 JP JP13707083A patent/JPS6030878A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100474659B1 (en) * | 2002-01-25 | 2005-03-08 | 주식회사 동강금속 | Valve seat corrosion interruption structure of valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0218470B2 (en) | 1990-04-25 |
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