JPS643886Y2 - - Google Patents
Info
- Publication number
- JPS643886Y2 JPS643886Y2 JP8486082U JP8486082U JPS643886Y2 JP S643886 Y2 JPS643886 Y2 JP S643886Y2 JP 8486082 U JP8486082 U JP 8486082U JP 8486082 U JP8486082 U JP 8486082U JP S643886 Y2 JPS643886 Y2 JP S643886Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- chamber
- hydraulic cylinder
- liquid
- liquid chamber
- 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
- 239000007788 liquid Substances 0.000 claims description 42
- 239000012530 fluid Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Fluid-Driven Valves (AREA)
- Magnetically Actuated Valves (AREA)
Description
【考案の詳細な説明】
本考案は弁の開度を任意に設定できる液圧作動
制御弁に関し、更に詳細には必要流量に比例した
弁開度を保持するとともに緊急時に直ちに閉弁で
きるようにした、特にガス、燃料油、薬液等高価
な液体の流れを制御するのに適した液圧作動制御
弁に関する。[Detailed description of the invention] The present invention relates to a hydraulically operated control valve that can set the opening degree of the valve arbitrarily. The present invention relates to a hydraulically operated control valve which is particularly suitable for controlling the flow of expensive liquids such as gas, fuel oil, and chemical liquids.
従来においては、流体の比例制御と緊急遮断を
行なうためには、それぞれ別個につくられた比例
制御弁と緊急遮断弁とを直列に配管接続していた
ため大きな取付けスペースを必要とするだけでな
く高価となる問題があつた。また従来使用されて
いた緊急遮断弁はソレノイドにより駆動する形式
のものであつたため、閉弁が急激に行なわれてウ
オータハンマ現象（扱う流体が液体の場合）を誘
発させて配管或は流体機器の破損を招くだけでな
く、消費電力が大きくなるという欠点がある。 Conventionally, in order to perform proportional control and emergency shut-off of fluid, a proportional control valve and an emergency shut-off valve, each manufactured separately, were connected in series via piping, which not only required a large installation space but also was expensive. There was a problem. In addition, conventionally used emergency shutoff valves were driven by solenoids, which caused the valves to close suddenly, inducing a water hammer phenomenon (when the fluid being handled was liquid) and damaging piping or fluid equipment. This has the disadvantage of not only causing damage but also increasing power consumption.
本考案はかかる従来の問題に鑑みなされたもの
であつて、その目的とするところは、一つの制御
弁に比例制御弁の機能と緊急遮断弁の機能を持た
せることにより、取付けスペースを小さくさせる
とともにコストダウンを図ることにある。 The present invention was devised in view of such conventional problems, and its purpose is to reduce the installation space by providing a single control valve with the functions of a proportional control valve and an emergency shutoff valve. At the same time, the aim is to reduce costs.
本考案は、入口、出口及び該入口と出口とを連
通する弁孔が形成された本体と、該弁孔を開閉制
御する弁体と、ピストンロツドが該弁体と連結さ
れた液圧シリンダとを備え、該液圧シリンダによ
り該弁体を動かす液圧作動制御弁において、該本
体の上部には液室を設けて該液圧シリンダを該液
室内に入れ、該液圧シリンダのピストン室と該液
室との間を三つの並列回路で連通し、該回路の一
つには該液室から該ピストン室内に液体を供給す
るポンプを設け、他の一つの回路には非通電時に
回路を開いている緊急用電磁弁を設け、更に他の
一つの回路には非通電時に回路を閉じている比例
制御用電磁弁を設け、該ポンプ及び該両電磁弁を
該液室内に封入して構成されている。 The present invention comprises a main body in which an inlet, an outlet, and a valve hole communicating between the inlet and the outlet are formed, a valve body that controls opening and closing of the valve hole, and a hydraulic cylinder with a piston rod connected to the valve body. In the hydraulically operated control valve, the valve body is moved by the hydraulic cylinder, a liquid chamber is provided in the upper part of the main body, the hydraulic cylinder is inserted into the liquid chamber, and the piston chamber of the hydraulic cylinder and the hydraulic cylinder are connected to each other. Three parallel circuits communicate with the liquid chamber, one of the circuits is provided with a pump that supplies liquid from the liquid chamber into the piston chamber, and the other circuit is opened when the current is not applied. An emergency solenoid valve is provided in the other circuit, and a proportional control solenoid valve that closes the circuit when the current is not energized is provided in another circuit, and the pump and both the solenoid valves are enclosed in the liquid chamber. ing.
上記構成において、緊急用電磁弁に通電して閉
じかつポンプを動作させて液圧シリンダのピスト
ン室内に液体を送つて弁体を開弁動作させる。弁
孔を通る流体の流量を変えるときは比例制御用電
磁弁を動作させて該ピストン室内の液体を必要量
排出させて弁体の位置を変える。そして緊急に弁
孔を閉じるときは緊急用電磁弁への通電をとめて
ピストン室内の液体を液室内に戻す。 In the above configuration, the emergency solenoid valve is energized and closed, the pump is operated to send liquid into the piston chamber of the hydraulic cylinder, and the valve body is operated to open the valve. When changing the flow rate of fluid passing through the valve hole, the proportional control solenoid valve is operated to discharge the required amount of liquid in the piston chamber and change the position of the valve body. When the valve hole is to be closed in an emergency, the power supply to the emergency solenoid valve is stopped and the liquid in the piston chamber is returned to the liquid chamber.
以下図面を参照して本考案による液圧作動制御
弁の一実施例について説明する。 An embodiment of the hydraulically operated control valve according to the present invention will be described below with reference to the drawings.
第１図において本実施例の液圧作動制御弁が示
されている。同図において、１は入口１１、出口
１２、入口１１と出口１２とを連通する弁孔１３
および弁座１４が形成された本体、２は本体１内
に弁座１４と係合可能に配置され本体のカバー１
５との間に設けられたばね３により弁座側に弾圧
された弁体である。 In FIG. 1, a hydraulically operated control valve of this embodiment is shown. In the figure, 1 indicates an inlet 11, an outlet 12, and a valve hole 13 that communicates the inlet 11 and the outlet 12.
and a main body in which a valve seat 14 is formed; 2 is disposed within the main body 1 so as to be engageable with the valve seat 14;
The valve body is pressed toward the valve seat by a spring 3 provided between the valve body and the valve body.
本体の上部には、外部から密閉された液室C1
とスイツチ室C2とを上下に隔てて画定するケー
ス４が取り付けられている。 At the top of the main body, there is a liquid chamber C1 that is sealed from the outside.
A case 4 is attached which vertically separates and defines a switch chamber C2 and a switch chamber C2 .
液室C1内には弁体駆動用の液圧シリンダ５が
封入されている。液圧シリンダ５のシリンダチユ
ーブ５１は弁孔１３と同軸にして上端がケース４
の内面に固定され、その下端はマニフオルド５２
により閉じられて液室C1と仕切られている。シ
リンダチユーブ５１内で移動可能なピストン５３
はカバー１５を貫通して伸びる長いピストンロツ
ド５４により弁体２と連結されている。 A hydraulic cylinder 5 for driving a valve body is enclosed within the liquid chamber C1 . The cylinder tube 51 of the hydraulic cylinder 5 is coaxial with the valve hole 13 and its upper end is connected to the case 4.
is fixed to the inner surface of the manifold 52, and its lower end is fixed to the inner surface of the manifold 52.
It is closed and separated from the liquid chamber C1 . Piston 53 movable within cylinder tube 51
is connected to the valve body 2 by a long piston rod 54 extending through the cover 15.
マニホルド５２には液室C1内の液体を液圧シ
リンダ５のピストン室５５に供給する電磁ポンプ
６と、ピストン室５５内の液体を液室C1内に戻
す緊急用電磁弁（以下緊急弁と呼ぶ）７ａおよび
比例制御用電磁弁（以下電磁弁と呼ぶ……第２
図）７ｂとが取り付けられている。 The manifold 52 includes an electromagnetic pump 6 that supplies the liquid in the liquid chamber C1 to the piston chamber 55 of the hydraulic cylinder 5, and an emergency solenoid valve (hereinafter referred to as an emergency valve) that returns the liquid in the piston chamber 55 to the liquid chamber C1 . ) 7a and a proportional control solenoid valve (hereinafter referred to as solenoid valve...second
Figure) 7b is attached.
電磁ポンプ６はコイルへの通電により液室C1
内の液体を入口６１から取り入れて出口６２およ
びマニホルドに形成された通路５２ａを介してピ
ストン室５５内に送る公知の構造のポンプであ
る。緊急弁７ａはコイル（図示せず）への非通電
時にマニホルド５２の通路５２ｂを介して液室
C1とピストン室５５とを連通していて、通電時
にそれらの連通を断つ公知の構造のノルマルオー
プン型開閉弁である。更に電磁弁７ｂはコイル
（図示せず）への非通電時は閉じていて通電した
ときのみマニホルド５２に形成された通路（図示
せず）を介してピストン室５５と液室とを通じる
公知の構造のノルマルクローズ型電磁弁である。 The electromagnetic pump 6 opens the liquid chamber C 1 by energizing the coil.
This is a pump of a known structure that takes in liquid from an inlet 61 and sends it into the piston chamber 55 through an outlet 62 and a passage 52a formed in the manifold. The emergency valve 7a is connected to the liquid chamber through the passage 52b of the manifold 52 when the coil (not shown) is de-energized.
This is a normally open on-off valve with a known structure that communicates C1 with the piston chamber 55 and cuts off the communication when energized. Further, the solenoid valve 7b is closed when the coil (not shown) is not energized, and only when energized is connected to the piston chamber 55 and the liquid chamber through a passage (not shown) formed in the manifold 52. This is a normally closed type solenoid valve.
スイツチ室C2内には電磁ポンプ停止用マイク
ロスイツチ８１、シーケンス用全閉マイクロスイ
ツチ８２およびパイロツト用マイクロスイツチ８
３が第２図に図示のような位置関係で取り付けら
れている。これらのマイクロスイツチはピストン
ロツド５４に取り付けられた制御板８４により切
換制御される。 Inside the switch chamber C2, there is a micro switch 81 for stopping the electromagnetic pump, a fully closed micro switch 82 for the sequence, and a micro switch 8 for the pilot.
3 are attached in the positional relationship shown in FIG. These micro switches are controlled by a control plate 84 attached to the piston rod 54.
次に上記液圧作動制御弁の動作について説明す
る。 Next, the operation of the hydraulically operated control valve will be explained.
弁体２を弁座から離して制御弁を開弁させると
き、電磁ポンプ６に通電して液室C1内の液体Ｌ
をピストン室５５内に供給するとともに緊急弁７
ａに通電してピストン室５５と液室C1との連通
を断つ。するとピストン５３はピストン室内の液
圧により上昇し、これにより弁体２を弁座１４か
ら離して開弁する。開弁により流体が入口１１か
ら出口に流れ、その流量が所定の値（設定量）に
なつたことを、例えば下流側に設けた流量センサ
により直接的に或は濃度センサ又は温度センサ等
により間接的に検出すると制御弁用の制御回路
（図示せず）を介して電磁ポンプへの通電が断た
れ、ピストン室５５への液体Ｌの供給は停止す
る。しかもピストン室５５と液室C1との連通は
断たれているのでピストン５３および弁体２はそ
の位置に止まり開弁状態を保つている。 When the valve body 2 is released from the valve seat to open the control valve, the electromagnetic pump 6 is energized to pump the liquid L in the liquid chamber C1 .
is supplied into the piston chamber 55 and the emergency valve 7
A is energized to cut off communication between the piston chamber 55 and the liquid chamber C1 . Then, the piston 53 rises due to the hydraulic pressure in the piston chamber, thereby separating the valve body 2 from the valve seat 14 and opening the valve. When the valve is opened, fluid flows from the inlet 11 to the outlet, and the fact that the flow rate has reached a predetermined value (set amount) can be detected, for example, directly by a flow rate sensor installed on the downstream side or indirectly by a concentration sensor or temperature sensor, etc. When this is detected, power to the electromagnetic pump is cut off via a control circuit (not shown) for the control valve, and the supply of liquid L to the piston chamber 55 is stopped. Moreover, since the communication between the piston chamber 55 and the liquid chamber C1 is cut off, the piston 53 and the valve body 2 remain at that position and maintain the valve open state.
次に流体の流量を少なくするために弁の開度を
少なくするとき、制御回路から電磁弁７ｂに通電
されてその電磁弁が開弁し、ピストン室の液体は
液室C1に流され得るようになる。このためピス
トン５３および弁体２はばね３の作用により降下
して弁の開度は少なくなり、入口から出口に流れ
る流体の流量は少なくなる。そして流量が所望の
値まで少なくなると電磁弁への通電が断たれて閉
弁する。したがつてピストン５３および弁体２は
その位置で停止し、所望の流量が確保される。 Next, when reducing the opening degree of the valve in order to reduce the flow rate of fluid, the control circuit energizes the solenoid valve 7b and opens the solenoid valve, allowing the liquid in the piston chamber to flow into the liquid chamber C1 . It becomes like this. Therefore, the piston 53 and the valve body 2 are lowered by the action of the spring 3, and the degree of opening of the valve is reduced, and the flow rate of fluid flowing from the inlet to the outlet is reduced. When the flow rate decreases to a desired value, the electromagnetic valve is de-energized and closed. Therefore, the piston 53 and the valve body 2 stop at that position, and the desired flow rate is ensured.
制御弁を閉弁するとき、緊急弁７ａへの通電を
断つてその緊急弁を開弁させればピストン室の液
体は液室C1に流れ、弁体２はばね３の作用によ
り弁座１４と係合し閉弁する。このとき制御板８
４がシーケンス用閉マイクロスイツチを操作して
制御回路全体の動作を停止させる。 When closing the control valve, if the power to the emergency valve 7a is cut off and the emergency valve is opened, the liquid in the piston chamber will flow to the liquid chamber C1 , and the valve body 2 will be moved to the valve seat 14 by the action of the spring 3. and closes the valve. At this time, the control board 8
4 operates the sequence closing microswitch to stop the operation of the entire control circuit.
制御弁の開弁時に電磁ポンプに通電されて動作
され、弁体２が全開位置になるまでピストンを上
昇させても電磁ポンプへの通電が止まらない場合
（例えば要求する流量が全開時の流量でもまだ不
足している場合）、制御板８４が電磁弁停止用マ
イクロスイツチを動作させて電磁ポンプへの通電
を断つ。したがつて制御弁は全開状態で電磁ポン
プは停止する。 When the electromagnetic pump is energized and operated when the control valve is opened, and the energization to the electromagnetic pump does not stop even if the piston is raised until the valve body 2 is in the fully open position (for example, even if the requested flow rate is the flow rate when fully opened) If the amount is still insufficient), the control board 84 operates a micro switch for stopping the solenoid valve to cut off the power to the solenoid pump. Therefore, the control valve is fully open and the electromagnetic pump is stopped.
なお、本制御弁を燃料ガスの流量制御に使用し
てパイロツトバーナを常時燃焼させておくのに必
要な最小流量を制御弁を介して常に流す場合等に
は、制御板８４が所定位置まで降下したとき（こ
のとき弁体２は弁座１４と係合せず最小流量を流
すために必要なだけ離れている。）、その制御板に
よりパイロツト用マイクロスイツチ８３を動作さ
せて電磁弁７ｂに通電されないようにすればよ
い。 Note that when this control valve is used to control the flow rate of fuel gas and the minimum flow rate required to keep the pilot burner constantly combusting is constantly supplied through the control valve, the control plate 84 is lowered to a predetermined position. (At this time, the valve body 2 does not engage with the valve seat 14 and is separated from the valve seat 14 by the necessary distance to allow the minimum flow rate to flow.), the control board operates the pilot micro switch 83 to de-energize the solenoid valve 7b. Just do it like this.
また電磁ポンプを一旦停止させた後更に流量を
増加したい場合、或はピストン室からの液体の漏
により弁の開度が小さくなつて流量が設定値より
大幅に（例えば５％以上）減少した場合には、制
御回路から電磁ポンプに通電されてピストン室内
に液体が補給される。 Also, if you want to further increase the flow rate after stopping the electromagnetic pump, or if the valve opening becomes smaller due to liquid leakage from the piston chamber, and the flow rate decreases significantly (for example, 5% or more) from the set value. At this time, the electromagnetic pump is energized by the control circuit to replenish liquid into the piston chamber.
以上のように本考案の液圧作動制御弁では一つ
の弁に流量制御および緊急遮断の両方の機能を持
たせたので別個の弁を二つ取り付けるよりもコス
トダウンを図ることができるとともに取付けスペ
ースも少さくて済む。また緊急遮断をピストン室
から液体を排出させて行なうのでその排出を絞り
で調節することによりウオータハンマ現象を防止
できる。 As described above, in the hydraulically operated control valve of the present invention, one valve has both the functions of flow control and emergency shutoff, so it is possible to reduce costs compared to installing two separate valves, and it also requires less installation space. It also needs to be smaller. Furthermore, since the emergency shutdown is performed by discharging the liquid from the piston chamber, the water hammer phenomenon can be prevented by adjusting the discharge with a throttle.
第１図は本考案による液圧作動制御弁の一実施
例の断面図、第２図は第１図の線−に沿つて
見た断面図である。
１：本体、１１：入口、１２：出口、１３：弁
孔、２：弁体、３：ばね、５：液圧シリンダ、５
３：ピストン、５４：ピストンロツド、６：ポン
プ、７ａ，７ｂ：電磁弁。
FIG. 1 is a sectional view of an embodiment of a hydraulically operated control valve according to the present invention, and FIG. 2 is a sectional view taken along the line - in FIG. 1: Main body, 11: Inlet, 12: Outlet, 13: Valve hole, 2: Valve body, 3: Spring, 5: Hydraulic cylinder, 5
3: Piston, 54: Piston rod, 6: Pump, 7a, 7b: Solenoid valve.
Claims (1)
が形成された本体と、該弁孔を開閉制御する弁体
と、ピストンロツドが該弁体と連結された液圧シ
リンダとを備え、該液圧シリンダにより該弁体を
動かす液圧作動制御弁において、 該本体の上部には液室を設けて該液圧シリンダ
を該液室内に入れ、該液圧シリンダのピストン室
と該液室との間を三つの並列回路で連通し、該回
路の一つには該液室から該ピストン室内に液体を
供給するポンプを設け、他の一つの回路には非通
電時に回路を開いている緊急用電磁弁を設け、更
に他の一つの回路には非通電時に回路を閉じてい
る比例制御用電磁弁を設け、該ポンプ及び該両電
磁弁を該液室内に封入したことを特徴とする液圧
作動制御弁。[Claims for Utility Model Registration] A main body having an inlet, an outlet, and a valve hole communicating between the inlet and the outlet, a valve body that controls opening and closing of the valve hole, and a piston rod connected to the valve body. A hydraulically operated control valve is provided with a hydraulic cylinder and moves the valve body by the hydraulic cylinder, a liquid chamber is provided in the upper part of the main body, the hydraulic cylinder is inserted into the liquid chamber, and the hydraulic cylinder is moved by the hydraulic cylinder. Three parallel circuits communicate between the piston chamber and the liquid chamber, one of the circuits is provided with a pump that supplies liquid from the liquid chamber into the piston chamber, and the other circuit is not energized. An emergency solenoid valve is provided that opens the circuit when the current is off, and a proportional control solenoid valve that closes the circuit when the current is not energized is provided in the other circuit, and the pump and both of the solenoid valves are enclosed within the liquid chamber. A hydraulically operated control valve characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8486082U JPS58187673U (en) | 1982-06-08 | 1982-06-08 | hydraulic actuated control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8486082U JPS58187673U (en) | 1982-06-08 | 1982-06-08 | hydraulic actuated control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58187673U JPS58187673U (en) | 1983-12-13 |
| JPS643886Y2 true JPS643886Y2 (en) | 1989-02-01 |
Family
ID=30093782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8486082U Granted JPS58187673U (en) | 1982-06-08 | 1982-06-08 | hydraulic actuated control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58187673U (en) |
-
1982
- 1982-06-08 JP JP8486082U patent/JPS58187673U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58187673U (en) | 1983-12-13 |
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