JPH049500Y2 - - Google Patents
Info
- Publication number
- JPH049500Y2 JPH049500Y2 JP14968788U JP14968788U JPH049500Y2 JP H049500 Y2 JPH049500 Y2 JP H049500Y2 JP 14968788 U JP14968788 U JP 14968788U JP 14968788 U JP14968788 U JP 14968788U JP H049500 Y2 JPH049500 Y2 JP H049500Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- spring
- constant flow
- tapered
- inner cylinder
- 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
- 230000008602 contraction Effects 0.000 claims description 10
- 239000000696 magnetic material Substances 0.000 claims description 2
- 239000012780 transparent material Substances 0.000 claims 2
- 239000012530 fluid Substances 0.000 description 17
- 230000007423 decrease Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Safety Valves (AREA)
Description
【考案の詳細な説明】
(産業上の利用分野)
本考案は定流量弁特に流量指示計をその内部に
組込まれている定流量弁に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a constant flow valve, particularly a constant flow valve having a flow indicator incorporated therein.
(従来の技術)
従来、弁体と縮流部との組み合わせによる定流
量弁にあつては、ばねに直接弁体が取り付けられ
ているので流れの変化により弁体の振動が激し
く、またばねが直接流体の流れの中に取り付けら
れているため、ごみ等が付着したり振動が生じた
りして精度上難点があつた。(Prior art) Conventionally, in a constant flow valve that combines a valve body and a flow contraction part, the valve body is attached directly to a spring, so changes in flow cause the valve body to vibrate violently, and the spring also Since it is installed directly in the flow of fluid, it has problems with accuracy due to the adhesion of dirt and vibrations.
そこで本出願人は第4図に示す通りの定流量弁
を実開昭59−116673号で提案した。 Therefore, the present applicant proposed a constant flow valve as shown in FIG. 4 in Japanese Utility Model Application No. 116673/1983.
即ち、内筒6内に弁軸5を貫通させ、内筒6内
に位置する弁軸5にスプリング7を挿通介在せし
め、又弁軸5の一端にダンパーの役目をするスプ
リング受8を固定し、内筒6外に位置する弁軸5
の他端に弁体4を取り付けた内筒6を筒管本体1
に装着し、弁体4の前後面に対する圧力P1,P2
が変化しても、予め定められた一定流量が流れる
ように設計された縮流部3を弁体4に対設して筒
管本体1の流体流出口部に設けた定流量弁であ
る。 That is, the valve shaft 5 is passed through the inner cylinder 6, the spring 7 is inserted through the valve shaft 5 located inside the inner cylinder 6, and a spring receiver 8 which functions as a damper is fixed to one end of the valve shaft 5. , the valve shaft 5 located outside the inner cylinder 6
The inner tube 6 with the valve body 4 attached to the other end is attached to the tube main body 1.
The pressure P 1 , P 2 on the front and rear surfaces of the valve body 4
This is a constant flow valve in which a flow contraction part 3 designed to allow a predetermined constant flow rate to flow even if the flow rate changes is provided at the fluid outlet part of the cylindrical pipe main body 1, with the flow contraction part 3 facing the valve body 4.
(考案が解決しようとする課題)
しかし乍ら所定の一定流量を出口側に供給すべ
く設計製作された定流量弁でありながら供給側或
は排出側における流量の変化、即ち圧力の変動の
影響で充分定流量弁の働きをしなくなる場合があ
り、時として装置全体の事故につながるという事
態も生ずることがある。(Problem that the invention aims to solve) However, although it is a constant flow valve designed and manufactured to supply a predetermined constant flow rate to the outlet side, it is affected by changes in flow rate, that is, pressure fluctuations, on the supply side or discharge side. In some cases, the constant flow valve may no longer function properly, and this can sometimes lead to an accident of the entire device.
このため従来は別に流量計を用いて一次側の流
量の変化を測定してこれを予め把握してその防止
につとめていた。 For this reason, in the past, a separate flow meter was used to measure the change in the flow rate on the primary side to understand this in advance and to prevent it.
本考案はかゝる従来の欠点を解決すべく考案さ
れたものであつて定流量弁に流量の変化を直ちに
測定できる装置を一体として組み込んだところに
あり定流量弁の機能をさらに拡大したものであ
る。 The present invention was devised to solve these conventional drawbacks, and further expands the functions of a constant flow valve by incorporating a device that can immediately measure changes in flow rate into a constant flow valve. It is.
(課題を解決するための手段)
本考案は筒管本体1の縮流部3に臨ませた弁体
4の弁軸5を内筒6内に延長し、この弁軸5の内
筒6内の延長部にスプリング7を嵌挿すると共に
その端部にスプリング受8を設けた定流量弁にお
いて、内筒6の外径を下流側に縮小して筒管本体
1との間をテーパ管とし、このテーパ管内に受圧
板10とスプリング11を設け、かつ筒管本体1
の外部に目盛を付すか、又は筒管本体1と内筒6
の間にオリフイス14を設けると共にオリフイス
14前後の筒管本体1に開孔部を穿設してテーパ
管15の入口16、出口17となし、一方テーパ
管15内に受圧板10、スプリング11及びテー
パ管15の出口側に制限***18を設け、又テー
パ管15の外部に目盛を付したことを特徴とする
定流量弁である。(Means for Solving the Problems) The present invention extends the valve stem 5 of the valve body 4 facing the flow contraction part 3 of the tube main body 1 into the inner cylinder 6, and extends the valve stem 5 into the inner cylinder 6. In a constant flow valve in which a spring 7 is inserted into an extension of the spring 7 and a spring receiver 8 is provided at the end thereof, the outer diameter of the inner cylinder 6 is reduced downstream to form a tapered pipe between the inner cylinder 6 and the cylinder main body 1. , a pressure receiving plate 10 and a spring 11 are provided in this tapered pipe, and a cylindrical pipe main body 1 is provided.
Either attach a scale to the outside of the tube body 1 and the inner tube 6.
An orifice 14 is provided in between, and openings are made in the cylindrical tube body 1 before and after the orifice 14 to serve as an inlet 16 and an outlet 17 of the tapered tube 15, while a pressure receiving plate 10, a spring 11, and a This constant flow valve is characterized in that a small restricting hole 18 is provided on the outlet side of the tapered pipe 15, and a scale is provided on the outside of the tapered pipe 15.
本考案において、内管6の外径を下流側に縮小
して筒管本体1との間をテーパ管とし、このテー
パ管を流れる流体によつて、受圧板10がスプリ
ング11に抗して移動するため、面積流量計の原
理により流量の変化を目盛により読みとることが
できる。 In the present invention, the outer diameter of the inner tube 6 is reduced downstream to form a tapered tube between it and the cylindrical tube body 1, and the pressure receiving plate 10 is moved against the spring 11 by the fluid flowing through the tapered tube. Therefore, changes in flow rate can be read on a scale based on the principle of an area flowmeter.
又筒管本体1と内筒6の間にオリフイス14を
設け、その前後からテーパ管15内に流体をバイ
パスさせテーパ管15内の受圧板10をスプリン
グ11に抗して移動させるため、面積流量計の原
理により流量の変化を目盛により読みとることが
できる。 In addition, an orifice 14 is provided between the cylindrical tube body 1 and the inner tube 6, and in order to bypass the fluid into the tapered tube 15 from the front and back of the orifice and move the pressure receiving plate 10 in the tapered tube 15 against the spring 11, the areal flow rate is reduced. Based on the principle of the meter, changes in flow rate can be read on the scale.
なおテーパ管15の出口側の制限***18はオ
リフイス14の按分比率としたのでバイパスを流
れる流量は筒管本体を流れる量の按分量となり受
圧板10の指示は筒管本体1の流量と同一量とす
ることができる。 Note that the restriction small hole 18 on the outlet side of the tapered pipe 15 has a proportionate ratio of the orifice 14, so the flow rate flowing through the bypass is a proportionate amount of the amount flowing through the tube body, and the indication on the pressure receiving plate 10 is the same amount as the flow rate in the tube body 1. It can be done.
又ニードルバルブ19をバイパス流路に設け
て、流量の調節を可能にしたので按分比率をより
細分化することができる。 Further, since the needle valve 19 is provided in the bypass flow path to enable adjustment of the flow rate, the proportioning ratio can be further divided.
(実施例)
実施例 1
第1図において1は筒管本体で入口2から流体
が流入する。3は筒管本体1の下流側に設けた縮
流部3でその曲面は弁体4と協働して一定流量が
流れるように設計してある。6は内筒で外壁は下
流側に縮小して筒管本体1との間にテーパ管を形
成し、筒管本体1の内部に装着される内筒6の内
部には弁軸5に嵌挿したスプリング7、及び弁軸
5の一端に固定したスプリング受8があり、又内
筒外部には弁軸5の他端に弁体4が固定されてい
る。流体が筒管本体1の縮流部3を経て排出され
るとき弁体4はスプリング受8のダンパー作用に
よりハンチングが防止される。9はストレーナ、
13は目盛板である。(Embodiments) Embodiment 1 In FIG. 1, numeral 1 denotes a cylindrical tube main body, into which fluid flows in from an inlet 2. Reference numeral 3 denotes a flow contraction section 3 provided on the downstream side of the tube main body 1, and its curved surface is designed to cooperate with the valve body 4 to allow a constant flow rate to flow. Reference numeral 6 denotes an inner cylinder whose outer wall is reduced toward the downstream side to form a tapered pipe between it and the cylinder main body 1.The inner cylinder 6 is installed inside the cylinder main body 1, and the valve shaft 5 is inserted into the inner cylinder 6. There are a spring 7 and a spring receiver 8 fixed to one end of the valve shaft 5, and a valve body 4 is fixed to the other end of the valve shaft 5 outside the inner cylinder. When the fluid is discharged through the contraction section 3 of the tube main body 1, hunting of the valve body 4 is prevented by the damper action of the spring receiver 8. 9 is a strainer,
13 is a scale plate.
ここで、筒管本体1の両端に流入管及び流出管
を連結し、圧力のある流体を流入すると流体は流
入管から内筒6と筒管本体1との間の通路を流
れ、さらに縮流部3を通過して流出管から排出さ
れる。 Here, an inflow pipe and an outflow pipe are connected to both ends of the cylindrical pipe body 1, and when a pressurized fluid flows in, the fluid flows from the inflow pipe through the passage between the inner cylinder 6 and the cylindrical pipe main body 1, and further condenses. It passes through section 3 and is discharged from the outflow pipe.
このとき圧力流体は弁体4と縮流部3との間で
縮流され、弁体4の前後部に圧力差を生ずる。従
つて弁体4は差圧によつて生ずる力を受け、スプ
リング7を圧縮して下流側へ進み縮流部3との間
に所要のオリフイス穴面積を形成して平衡する。 At this time, the pressure fluid is contracted between the valve body 4 and the flow contraction section 3, creating a pressure difference between the front and rear portions of the valve body 4. Therefore, the valve body 4 receives the force generated by the differential pressure, compresses the spring 7, moves downstream, forms a required orifice hole area between it and the contracting portion 3, and is balanced.
いまより高い圧力流体が流入するか、或は流出
側の流体の圧力が低下すると弁体4前後の差圧が
増大するため、弁体4は弁軸5、スプリング受8
と共に内筒6に内蔵されたスプリング7を圧縮し
乍ら下流側に移動し縮流部3との間のオリフイス
穴面積を縮小して平衡する。逆に流入する流体の
圧力が低下するか、流出側の流体の圧力が上昇し
た場合弁体4の前後の差圧が減少するためスプリ
ング7は伸張し、弁体4は弁軸5、スプリング受
8と共に上流側に移動しオリフイス穴面積を拡大
して平衡する。 When a higher pressure fluid flows in or the pressure of the fluid on the outflow side decreases, the differential pressure across the valve body 4 increases, so the valve body 4 is forced to move between the valve shaft 5 and the spring bearing 8.
At the same time, the spring 7 built in the inner cylinder 6 is compressed and moved downstream to reduce the area of the orifice hole between it and the contracted flow section 3 to achieve equilibrium. Conversely, when the pressure of the inflowing fluid decreases or the pressure of the fluid on the outflow side increases, the differential pressure across the valve body 4 decreases, causing the spring 7 to expand, causing the valve body 4 to move between the valve shaft 5 and the spring bearing. 8 and moves upstream to expand the orifice hole area and achieve equilibrium.
このように流体の圧力の変化に応じて弁体4、
弁軸5並びにスプリング受8も移動し、この時ス
プリング7は内筒6の内壁並びに閉そく端とスプ
リング受8との間に拘束されながら伸縮する。縮
流部3は、弁体4との組合わせで流体が一定流量
となるような曲面によつて形成されているため流
入側や流出側の圧力変化に対応して常に一定の流
量を排出管から得ることができる。 In this way, the valve body 4,
The valve stem 5 and the spring receiver 8 also move, and at this time the spring 7 expands and contracts while being restrained between the inner wall and the closed end of the inner cylinder 6 and the spring receiver 8. The flow contraction part 3 is formed by a curved surface that maintains a constant flow rate of fluid in combination with the valve body 4, so that the flow rate always remains constant in response to pressure changes on the inflow and outflow sides of the discharge pipe. can be obtained from.
ところで斯る定流量弁において今流れている流
量を知りたい場合、従来は別に流量計などを用い
て測定していた。 By the way, if you want to know the current flow rate in such a constant flow valve, conventionally you have measured it separately using a flow meter or the like.
本案は第1図に示す如く、筒管本体1と内筒6
との間の〓間にスプリング11と受圧板10を介
在させ、筒管本体1と内筒6の〓間を流れる流体
が所定以上流れた場合スプリング11の作用によ
り受圧板10がこの〓間を移動させるようにし
た。 As shown in FIG.
A spring 11 and a pressure receiving plate 10 are interposed between the cylindrical pipe body 1 and the inner cylinder 6, and when the fluid flowing between the cylindrical pipe body 1 and the inner cylinder 6 exceeds a predetermined value, the pressure receiving plate 10 moves between the cylindrical tube body 1 and the inner cylinder 6 by the action of the spring 11. I tried to move it.
しかし筒管本体1と内筒6の間の〓間はテーパ
流路となつているため面積流量計の原理により受
圧板10は流量計の指針となりスプリング11の
強さにより適宜移動し移動量を把握することによ
り流量が読み取れる。又筒管本体1の外部に目盛
板13をつけておけば流量計として使用すること
ができ、さらに受圧板10を磁性材料製としてお
けば、筒管本体が不透明材料製でも移動量が把握
できる。 However, since the space between the tube main body 1 and the inner tube 6 is a tapered flow path, the pressure receiving plate 10 acts as a guide for the flowmeter according to the principle of an area flowmeter, and is moved appropriately by the strength of the spring 11 to control the amount of movement. By understanding this, you can read the flow rate. Furthermore, if a scale plate 13 is attached to the outside of the tube body 1, it can be used as a flowmeter, and if the pressure receiving plate 10 is made of a magnetic material, the amount of movement can be grasped even if the tube body is made of an opaque material. .
実施例 2
第2図において筒管本体1と内筒6との間の〓
間にオリフイス14を設け、かつオリフイス14
の前後に開孔部を穿設してテーパ管15の入口1
6、出口17となし、テーパ管15の中にスプリ
ング11と受圧板10を収納し、テーパ管15の
外部に目盛板13を、又テーパ管15の出口側に
制限小孔18を設けたものである。オリフイス1
4と制限***18との大きさを流量の按分比率で
定めればテーパ管15内の受圧板10の移動量が
流量計として機能する。その他は第1図と同様で
ある。Embodiment 2 In FIG.
An orifice 14 is provided in between, and the orifice 14
The entrance 1 of the tapered pipe 15 is
6. With an outlet 17, a spring 11 and a pressure receiving plate 10 are housed in a tapered tube 15, a scale plate 13 is provided on the outside of the tapered tube 15, and a small restriction hole 18 is provided on the outlet side of the tapered tube 15. It is. Orifice 1
If the sizes of the pressure receiving plate 10 and the restricting hole 18 are determined by the proportion of the flow rate, the amount of movement of the pressure receiving plate 10 within the tapered pipe 15 functions as a flow meter. Other details are the same as in FIG.
実施例 3
第3図に示す如く、第2図の制限***18にニー
ドルバルブ19を設置することにより流量の制御
範囲をより拡大可能である。Embodiment 3 As shown in FIG. 3, by installing a needle valve 19 in the restriction small hole 18 in FIG. 2, the control range of the flow rate can be further expanded.
なおニードルバルブ19を第3図では制限***
18に設けたがバイパス流路のテーパ管部分以外
であれば何処に設けてもその機能は同一である。 Although the needle valve 19 is provided in the restriction hole 18 in FIG. 3, its function is the same even if it is provided anywhere other than the tapered pipe portion of the bypass flow path.
(考案の効果)
本考案によれば流量計が定流量弁内に組込まれ
ているため、定流量が流れていることを確認する
ためいちいち別に流量計で測定する繋雑さをさけ
ることができる。また自由な方向に取り付けられ
るので配管が容易になり、コストの低減にも大い
に貢献するところ大である。(Effects of the invention) According to the invention, since the flow meter is built into the constant flow valve, it is possible to avoid the trouble of having to measure each time with a flow meter to confirm that a constant flow is flowing. . Furthermore, since it can be installed in any direction, piping is easy, which greatly contributes to cost reduction.
第1図、第2図、第3図は本考案の一実施例の
説明図、第4図は従来の定流量弁の説明図であ
る。
1……筒管本体、2……入口、3……縮流部、
4……弁体、5……弁軸、6……内筒、7……ス
プリング、8……スプリング受、9……ストレー
ナー、10……受圧板、11……スプリング、1
3……目盛板、14……オリフイス、15……テ
ーパ管、16……流体入口、17……流体出口、
18……制限***、19……ニードルバルブ。
FIGS. 1, 2, and 3 are explanatory diagrams of an embodiment of the present invention, and FIG. 4 is an explanatory diagram of a conventional constant flow valve. 1...tube main body, 2...inlet, 3...contractor section,
4... Valve body, 5... Valve stem, 6... Inner cylinder, 7... Spring, 8... Spring receiver, 9... Strainer, 10... Pressure receiving plate, 11... Spring, 1
3... Scale plate, 14... Orifice, 15... Tapered pipe, 16... Fluid inlet, 17... Fluid outlet,
18...Restriction small hole, 19...Needle valve.
Claims (1)
軸5を内筒6内に延長し、この弁軸5の内筒6
内の延長部にスプリング7を嵌挿すると共にそ
の端部にスプリング受8を設けた定流量弁にお
いて、内筒6の外径を下流側に縮小して筒管本
体1との間をテーパ管とし、このテーパ管内に
受圧板10とスプリング11を設け、かつ筒管
本体1の外部に目盛を付したことを特徴とする
定流量弁。 2 筒管本体1の縮流部3に臨ませた弁体4の弁
軸5を内筒6内に延長し、この弁軸5の内筒6
内の延長部にスプリング7を嵌挿すると共にそ
の端部にスプリング受8を設けた定流量弁にお
いて、筒管本体1と内管6の間にオリフイス1
4をもうけると共にオリフイス14前後の筒管
本体1に開孔部を穿設して、テーパ管15の入
口16、出口17となし、一方テーパ管15内
に受圧板10、スプリング11、及びテーパ管
15の出口側に制限***18を設け、又テーパ
管15外部に目盛を付したことを特徴とする定
流量弁 3 バイパス流路内にニードルバルブ19を設け
た請求項2記載の定流量弁 4 筒管本体1を透視材料製にした請求項1記載
の定流量弁 5 テーパ管15を透視材料製にした請求項2記
載の定流量弁 6 受圧板10を磁性材料製にした請求項1又は
2記載の定流量弁。[Claims for Utility Model Registration] 1. The valve stem 5 of the valve body 4 facing the flow contraction part 3 of the cylinder pipe body 1 is extended into the inner cylinder 6, and the inner cylinder 6 of the valve stem 5 is extended into the inner cylinder 6.
In a constant flow valve in which a spring 7 is inserted into the inner extension part and a spring receiver 8 is provided at the end thereof, the outer diameter of the inner cylinder 6 is reduced downstream and a tapered pipe is formed between the inner cylinder 6 and the cylinder main body 1. A constant flow valve characterized in that a pressure receiving plate 10 and a spring 11 are provided inside the tapered pipe, and a scale is provided on the outside of the cylindrical pipe body 1. 2. Extend the valve stem 5 of the valve body 4 facing the contraction part 3 of the cylindrical pipe body 1 into the inner cylinder 6, and
In a constant flow valve in which a spring 7 is inserted into the inner extension part and a spring receiver 8 is provided at the end thereof, an orifice 1 is provided between the cylindrical pipe body 1 and the inner pipe 6.
4, and openings are made in the cylindrical tube body 1 before and after the orifice 14 to serve as an inlet 16 and an outlet 17 of the tapered tube 15, while a pressure receiving plate 10, a spring 11, and a tapered tube are installed inside the tapered tube 15. Constant flow valve 3 characterized in that a restriction small hole 18 is provided on the outlet side of the tapered pipe 15 and a scale is provided on the outside of the tapered pipe 15.The constant flow valve 4 according to claim 2, further comprising a needle valve 19 provided in the bypass flow path. The constant flow valve 5 according to claim 1, wherein the cylindrical pipe body 1 is made of a transparent material. The constant flow valve 6 according to claim 2, wherein the tapered pipe 15 is made from a transparent material. The pressure receiving plate 10 is made from a magnetic material. Constant flow valve according to 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14968788U JPH049500Y2 (en) | 1988-11-18 | 1988-11-18 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14968788U JPH049500Y2 (en) | 1988-11-18 | 1988-11-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0271181U JPH0271181U (en) | 1990-05-30 |
JPH049500Y2 true JPH049500Y2 (en) | 1992-03-10 |
Family
ID=31422148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14968788U Expired JPH049500Y2 (en) | 1988-11-18 | 1988-11-18 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH049500Y2 (en) |
-
1988
- 1988-11-18 JP JP14968788U patent/JPH049500Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPH0271181U (en) | 1990-05-30 |
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