JPS6145413Y2 - - Google Patents
Info
- Publication number
- JPS6145413Y2 JPS6145413Y2 JP2701883U JP2701883U JPS6145413Y2 JP S6145413 Y2 JPS6145413 Y2 JP S6145413Y2 JP 2701883 U JP2701883 U JP 2701883U JP 2701883 U JP2701883 U JP 2701883U JP S6145413 Y2 JPS6145413 Y2 JP S6145413Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- throat
- outlet
- valve seat
- 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
- 238000005192 partition Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Lift Valve (AREA)
Description
【考案の詳細な説明】
本考案はダブルポート弁の改良に関するもので
ある。[Detailed Description of the Invention] The present invention relates to an improvement of a double port valve.
従来のダブルポート弁を第１図に示す。 A conventional double port valve is shown in FIG.
０１は弁箱、０２は弁入口フランジ、０３は弁
出口フランジ、０４は弁棒、０５および０６はそ
れぞれ弁棒０４に取り付けた上部弁体および下部
弁体、０７および０８はそれぞれ弁箱０１内に設
けた上部弁座および下部弁座、０９は整流用多穴
筒で、弁入口フランジ０２から入つた流れは上下
に分流して上部弁体０５および下部弁体０６を通
り、その後合流して弁出口フランジ０３から流出
する。 01 is the valve box, 02 is the valve inlet flange, 03 is the valve outlet flange, 04 is the valve stem, 05 and 06 are the upper and lower valve bodies attached to the valve stem 04, respectively, and 07 and 08 are inside the valve box 01, respectively. The upper valve seat and lower valve seat 09 provided in the valve are multi-hole cylinders for rectifying flow, and the flow that enters from the valve inlet flange 02 is split up and down, passes through the upper valve body 05 and the lower valve body 06, and then merges. It flows out from the valve outlet flange 03.
弁をダブルポートにするのは弁本部の圧損低減
が目的で、流量を半減して流すものである。 The purpose of making the valve a double port is to reduce the pressure drop in the valve head, and the flow rate is halved.
然し、弁体形状が上下弁同様形状のものは、弁
体と弁座の間で形成されるスロートからの動圧の
圧力損失係数が大きく、また、上下弁体の形状が
異なるものは、上下弁に働くスラストの打消し作
用が少なく、弁棒駆動スラストが大きい等の欠点
があつた。 However, if the shape of the valve body is the same as that of the upper and lower valves, the pressure loss coefficient of the dynamic pressure from the throat formed between the valve body and the valve seat is large. The disadvantages were that there was little countervailing action for the thrust acting on the valve, and the thrust required to drive the valve stem was large.
本考案は上記従来の欠点を除去したもので、一
実施例を第２図に示す。 The present invention eliminates the above-mentioned conventional drawbacks, and one embodiment is shown in FIG.
１は弁箱、２は弁入口フランジ、３は弁出口フ
ランジ、４は上部弁棒、５は下部弁棒、６は内く
びれ状の曲面の弁体で、７および８はそれぞれ弁
体６の上部および下部の上部弁体および下部弁体
である。 1 is a valve body, 2 is a valve inlet flange, 3 is a valve outlet flange, 4 is an upper valve stem, 5 is a lower valve stem, 6 is a valve body with an inner constriction-like curved surface, and 7 and 8 are the valve body 6, respectively. The upper and lower valve bodies are an upper valve body and a lower valve body.
弁体６の最小径をdm／ｄ＞0.5の関係にある。The minimum diameter of the valve body 6 has a relationship of dm/d>0.5.
９は上部弁座、１０は下部弁座、１１および１
２はそれぞれ上部弁座９および下部弁座１０から
流体の流れの方向に延びる上部スロート部および
下部スロート部である。上部スロート部１１およ
び下部スロート部１２を設けることにより上部ス
ロート出口１３および下部スロート出口１４をデ
イフユーザ流路としている。 9 is the upper valve seat, 10 is the lower valve seat, 11 and 1
Reference numerals 2 denote an upper throat portion and a lower throat portion extending in the direction of fluid flow from the upper valve seat 9 and the lower valve seat 10, respectively. By providing the upper throat portion 11 and the lower throat portion 12, the upper throat outlet 13 and the lower throat outlet 14 are made into diffuser flow paths.
弁箱１内の合流部に中央仕切り１５を設ける。１
６は整流用多穴筒である。A central partition 15 is provided at the merging part within the valve box 1. 1
6 is a multi-hole tube for rectification.
本考案はかかる構造であり、上部スロート部１
１と下部スロート部１２の面積をほぼ等値にする
ことにより通過流量が等量配分され、上部スロー
ト出口１３、下部スロート出口１４のデイフユー
ザ形状により圧力損失が減る。 The present invention has such a structure, and the upper throat portion 1
By making the areas of 1 and the lower throat portion 12 almost equal, the passing flow rate is equally distributed, and the differential shape of the upper throat outlet 13 and the lower throat outlet 14 reduces pressure loss.
また弁体６の最小径dmをできる限り大きくし
てズン胴形に近づけることにより流体力が働く上
部弁体７、下部弁体８の環状面積が減り、スラス
トが減る。 Furthermore, by making the minimum diameter dm of the valve body 6 as large as possible to approximate the shape of a barrel, the annular area of the upper valve body 7 and the lower valve body 8 on which fluid force acts is reduced, and the thrust is reduced.
以上述べたように本考案は、上部弁体および下
部弁体間を内くびれ状の曲面の弁体で接続し、上
部弁座および下部弁座に流体の流れ方向に延びる
上部スロート部および下部スロート部を設けるこ
とにより上部スロート出口および下部スロート出
口をデイフユーザ流路とし、かつ弁箱内の合流部
に中央仕切りを設けたダブルポート弁であるの
で、
(1) スロート出口のデイフユーザ流路により弁圧
力損失が低減する。 As described above, the present invention connects an upper valve body and a lower valve body with a valve body having an inwardly constricted curved surface, and connects an upper throat portion and a lower throat portion that extend in the fluid flow direction to the upper valve seat and the lower valve seat. This is a double port valve, with the upper throat outlet and the lower throat outlet serving as a diffuse user flow path, and a central partition provided at the confluence in the valve box. Losses are reduced.
(2) 上下弁でスラスト打消しをさせ、弁棒の駆動
力を低減させる。(2) The upper and lower valves cancel the thrust and reduce the driving force of the valve stem.
(3) 中央仕切り板にて合流による流れの変動を抑
え、スラスト変動を低減する。(3) The central partition plate suppresses flow fluctuations due to merging and reduces thrust fluctuations.
等の効果を有するものである。It has the following effects.
第１図は従来のダブルポート弁の縦断面図、第
２図は本考案の一実施例の縦断面図である。
１：弁箱、４：上部弁棒、５：下部弁棒、６：
弁体、７：上部弁体、８：下部弁体、９：上部弁
座、１０：下部弁座、１１：上部スロート部、１
２：下部スロート部、１３：上部スロート出口、
１４：下部スロート出口、１５：中央仕切り。
FIG. 1 is a longitudinal sectional view of a conventional double port valve, and FIG. 2 is a longitudinal sectional view of an embodiment of the present invention. 1: Valve box, 4: Upper valve stem, 5: Lower valve stem, 6:
Valve body, 7: Upper valve body, 8: Lower valve body, 9: Upper valve seat, 10: Lower valve seat, 11: Upper throat part, 1
2: Lower throat part, 13: Upper throat outlet,
14: Lower throat exit, 15: Center partition.
Claims (1)
の弁体で接続し、上部弁座および下部弁座に流体
の流れ方向に延びる上部スロート部および下部ス
ロート部を設けることにより上部スロート出口お
よび下部スロート出口をデイフユーザ流路とし、
かつ弁箱内の合流部に中央仕切りを設けたことを
特徴とするダブルボート弁。 The upper valve body and the lower valve body are connected by a curved valve body with an inwardly constricted surface, and an upper throat outlet and a lower throat part are provided in the upper valve seat and the lower valve seat to extend in the fluid flow direction. The lower throat outlet is used as a diffuser flow path,
A double boat valve characterized in that a central partition is provided at the merging section within the valve box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2701883U JPS59133870U (en) | 1983-02-28 | 1983-02-28 | double port valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2701883U JPS59133870U (en) | 1983-02-28 | 1983-02-28 | double port valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59133870U JPS59133870U (en) | 1984-09-07 |
| JPS6145413Y2 true JPS6145413Y2 (en) | 1986-12-20 |
Family
ID=30157913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2701883U Granted JPS59133870U (en) | 1983-02-28 | 1983-02-28 | double port valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59133870U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2548429B2 (en) * | 1990-06-22 | 1996-10-30 | 幡豆工業株式会社 | Control valve |
-
1983
- 1983-02-28 JP JP2701883U patent/JPS59133870U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59133870U (en) | 1984-09-07 |