JPH05324094A - Liquid pressure controller - Google Patents
Liquid pressure controllerInfo
- Publication number
- JPH05324094A JPH05324094A JP14835492A JP14835492A JPH05324094A JP H05324094 A JPH05324094 A JP H05324094A JP 14835492 A JP14835492 A JP 14835492A JP 14835492 A JP14835492 A JP 14835492A JP H05324094 A JPH05324094 A JP H05324094A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- valve
- steam
- fluid
- setting
- 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.)
- Pending
Links
Landscapes
- Control Of Fluid Pressure (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、蒸気、ガス、液体等の
各種流体を使用する流体使用機器の圧力を所望範囲に制
御する流体圧力制御装置に関する。具体的には、水蒸気
の保有熱量を利用して加熱や乾燥等を行う蒸気使用機
器、一定圧力のガスを貯溜するガス貯溜装置等の流体圧
力を所望圧力に制御する装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid pressure control device for controlling the pressure of a fluid-using device using various fluids such as steam, gas and liquid to a desired range. More specifically, the present invention relates to a device that controls the fluid pressure to a desired pressure, such as a steam-using device that uses the amount of heat of water vapor to heat or dry, or a gas storage device that stores gas at a constant pressure.
【０００２】[0002]
【従来の技術】従来の蒸気使用機器における流体圧力制
御装置としては、蒸気使用機器に所定圧力の蒸気を供給
するための蒸気圧力調節弁を機器の入口側に設け、蒸気
使用機器に所定圧力以上の蒸気を放出する安全逃し弁を
取付けたものがある。これは、圧力調節弁から所望圧力
蒸気を供給して機器で使用し、機器内の圧力が何等かの
原因により昇圧すると安全逃し弁が開弁して機器から昇
圧蒸気を放出することによって、機器内を所望の圧力範
囲に維持制御するものである。2. Description of the Related Art As a conventional fluid pressure control device for a steam-using device, a steam pressure control valve for supplying steam having a predetermined pressure to the steam-using device is provided on the inlet side of the device so that the steam-using device has a predetermined pressure or more. Some are equipped with a safety relief valve that releases the steam of. This is because the desired pressure steam is supplied from the pressure control valve to be used in the equipment, and when the pressure inside the equipment rises due to some cause, the safety relief valve opens and the pressurized steam is released from the equipment. The inside is maintained and controlled within a desired pressure range.
【０００３】[0003]
【発明が解決しようとする課題】上記従来のものでは、
使用蒸気圧力を頻繁に変更する場合に、圧力調節弁と同
時に安全逃し弁の設定圧力をも変更しなければならず繁
雑であると共に、変更に時間を要してしまう問題があっ
た。特に蒸気使用機器内で加熱等を行う被加熱物が食品
や医薬品や化学物質である場合には、僅かな温度変化に
より被加熱物が劣化したり熱損傷を受けたりするため
に、蒸気温度すなわち蒸気圧力は精度良く且つ時間遅れ
なく速やかに制御しなければならないのである。SUMMARY OF THE INVENTION In the above conventional one,
When the steam pressure to be used is changed frequently, the set pressure of the safety relief valve must be changed at the same time as the pressure control valve, which is complicated and requires a long time to change. Especially when the object to be heated, which is heated in the equipment using steam, is food, medicine or chemical substance, the temperature of the steam is The steam pressure must be controlled accurately and quickly without delay.
【０００４】従って本発明の技術的課題は、流体の供給
弁と、放出または吸引弁手段とを同時に駆動設定できる
ようにすることにより、設定圧力変更時の繁雑さをなく
し且つ変更に時間遅れを生じることのない流体圧力制御
装置を得ることである。Therefore, a technical problem of the present invention is that the fluid supply valve and the discharge or suction valve means can be driven and set at the same time, thereby eliminating the complexity of changing the set pressure and delaying the change. To obtain a fluid pressure control device that does not occur.
【０００５】[0005]
【課題を解決するための手段】上記の技術的課題を解決
するために講じた本発明の技術的手段は、流体使用機器
に流体を供給する流体供給管を接続し、該供給管に流体
圧力を調節する圧力調節弁を取付け、流体使用機器に該
機器内の圧力を放出または機器内へ吸引する弁手段を連
通し、上記圧力調節弁と弁手段に所望圧力を設定する圧
力設定駆動部を取付け、該圧力設定駆動部に駆動信号を
発する制御部を接続し、該制御部に圧力調節弁と弁手段
の所望圧力を入力する圧力入力部を接続したものであ
る。Means for Solving the Problems The technical means of the present invention taken to solve the above technical problem is to connect a fluid supply pipe for supplying a fluid to a device using fluid, and to connect the fluid pressure to the supply pipe. A pressure setting valve for adjusting the pressure, a valve means for releasing the pressure in the equipment or sucking the pressure in the equipment is connected to the equipment using fluid, and a pressure setting drive unit for setting a desired pressure in the pressure control valve and the valve means. It is mounted, and a control unit for issuing a drive signal is connected to the pressure setting drive unit, and a pressure input unit for inputting a desired pressure of the pressure control valve and the valve means is connected to the control unit.
【０００６】[0006]
【作用】上記の技術的手段の作用は下記の通りである。
圧力調節弁と弁手段に圧力設定駆動部を介して制御部と
圧力入力部を接続したことにより、圧力入力部から所望
流体圧力を入力することにより、制御部から圧力設定駆
動部に駆動信号が送られ、圧力調節弁及び弁手段の設定
圧力が同時に且つ時間遅れなく設定される。The operation of the above technical means is as follows.
By connecting the control unit and the pressure input unit to the pressure control valve and the valve means via the pressure setting drive unit, by inputting a desired fluid pressure from the pressure input unit, a drive signal is sent from the control unit to the pressure setting drive unit. Then, the set pressures of the pressure control valve and the valve means are set simultaneously and without delay.
【０００７】圧力調節弁に自力式圧力調節弁としての減
圧弁を用いた場合は、減圧弁の圧力調節バネのバネ力を
調節する圧力調節ネジに、圧力設定駆動部としてのモ―
タ等を接続することにより、モ―タを入力圧力に応じた
回転数だけ回転させて圧力調節バネのバネ力を調節する
ことにより、減圧弁の設定圧力を任意に設定することが
できる。また同様に、弁手段としてバネ式の安全逃し弁
を用いた場合は、この圧力調節バネのバネ力をモ―タで
調節することにより、安全逃し弁の設定圧力を任意に且
つ時間遅れなく設定することができる。When a pressure reducing valve as a self-operated pressure adjusting valve is used as the pressure adjusting valve, a pressure adjusting screw for adjusting the spring force of the pressure adjusting spring of the pressure reducing valve is attached to a pressure adjusting drive unit.
By connecting a motor or the like, the motor is rotated by the number of rotations corresponding to the input pressure to adjust the spring force of the pressure adjusting spring, so that the set pressure of the pressure reducing valve can be arbitrarily set. Similarly, when a spring type safety relief valve is used as the valve means, the pressure of the safety relief valve can be set arbitrarily and without time delay by adjusting the spring force of this pressure adjusting spring with a motor. can do.
【０００８】[0008]
【実施例】上記の技術的手段の具体例を示す実施例を説
明する（図１乃至図３参照）。本実施例においては、流
体使用機器として蒸気使用機器を用いた例を示す。蒸気
使用機器１に蒸気を供給する蒸気供給管２を接続し、こ
の蒸気供給管２に開閉弁３と圧力調節弁としての自動設
定減圧弁４を取付ける。蒸気使用機器１の上部には圧力
放出または吸引弁手段としての自動設定安全逃し弁５を
取付ける。蒸気使用機器１の下部には機器１内で熱交換
した蒸気のうち復水化した凝縮水のみを排出するスチ―
ムトラップ６を接続する。自動設定減圧弁４と自動設定
安全逃し弁５及び蒸気開閉弁３は、制御部７と接続し、
制御部７には圧力入力部８を接続する。蒸気使用機器１
内の圧力を検出する圧力センサ―９を取付けて制御部７
と接続する。EXAMPLES Examples showing specific examples of the above technical means will be described (see FIGS. 1 to 3). In this embodiment, an example in which a steam-using device is used as the fluid-using device is shown. A steam supply pipe 2 for supplying steam is connected to the steam using device 1, and an opening / closing valve 3 and an automatic setting pressure reducing valve 4 as a pressure control valve are attached to the steam supply pipe 2. An automatic setting safety relief valve 5 as pressure release or suction valve means is attached to the upper part of the steam using device 1. In the lower part of the steam-using device 1, a steam that discharges only condensed water of the steam that has undergone heat exchange in the device 1
Connect the trap 6. The automatic setting pressure reducing valve 4, the automatic setting safety relief valve 5 and the steam opening / closing valve 3 are connected to the control unit 7,
The pressure input unit 8 is connected to the control unit 7. Steam-using equipment 1
Attach a pressure sensor-9 to detect the internal pressure
Connect with.
【０００９】自動設定減圧弁４は図２に詳細を示すよう
に、減圧弁部１０に圧力設定駆動部としてのアクチュエ
―タ部１１を取付けたもので、減圧弁部１０に蒸気入口
１２と出口１３を有する。蒸気入口１２を蒸気供給管２
と接続し、出口１３を蒸気使用機器１に接続する。図２
に示す減圧弁はパイロット式減圧弁と呼ばれるもので、
入口１２と出口１３を連通遮断する主弁口１４と弁体１
５、弁体１５と協働するピストン１６、ピストン１６上
部に形成したピストン室１７、ピストン室１７に入口１
２側蒸気を通路１８，１９を介して供給遮断するパイロ
ット弁２０、パイロット弁２０と協働する円板状のダイ
ヤフラム２１、ダイヤフラム２１の下部に形成したダイ
ヤフラム室２２、ダイヤフラム室２２と出口１３側を連
通する連通路２３、ダイヤフラム２１の上面に取付けた
圧力調節バネ２４、この圧力調節バネ２４のバネ荷重を
変化させる圧力調節ネジ２５、圧力調節ネジ２５を回転
しながら上下動させるモ―タ出力軸２６、モ―タ出力軸
２６を減速器２７を介して回転させるモ―タ２８にて構
成される。出口１３側圧力が、圧力調節ネジ２５の締め
込み量に応じた圧力調節バネ２４のバネ荷重よりも低下
すると、ダイヤフラム２１が下方に変位してパイロット
弁２０を開弁し、入口１２側の高圧蒸気が通路１８，１
９を通ってピストン室１７に流入することにより、ピス
トン１６が下方に変位して弁体１５も下方へ開弁し、入
口１２側の高圧蒸気が出口１３側に供給されて出口１３
側の圧力が上昇する。出口１３側の圧力が上昇するとダ
イヤフラム室２２の圧力も上昇してダイヤフラム２１が
圧力調節バネ２４のバネ力に打ち勝って上方に変位する
ことによって、パイロット弁２０が閉弁し、ピストン室
１７への蒸気の供給が絶たれることにより、ピストン１
６と弁体１５が閉弁して出口１３側への蒸気の供給を停
止することによって、出口１３側は所定圧力に維持され
るものである。As shown in detail in FIG. 2, the automatic setting pressure reducing valve 4 is formed by attaching an actuator portion 11 as a pressure setting driving portion to the pressure reducing valve portion 10, and the pressure reducing valve portion 10 has a steam inlet 12 and an outlet. Have 13. The steam inlet 12 is connected to the steam supply pipe 2
And the outlet 13 is connected to the steam using device 1. Figure 2
The pressure reducing valve shown in is called a pilot type pressure reducing valve.
Main valve opening 14 and valve body 1 for shutting off communication between the inlet 12 and the outlet 13
5, a piston 16 that cooperates with the valve body 15, a piston chamber 17 formed in the upper portion of the piston 16, and an inlet 1 to the piston chamber 17.
A pilot valve 20 for shutting off the supply of steam on the second side through the passages 18 and 19, a disk-shaped diaphragm 21 cooperating with the pilot valve 20, a diaphragm chamber 22 formed under the diaphragm 21, a diaphragm chamber 22 and an outlet 13 side. A communication passage 23 communicating with the pressure adjusting spring 24 attached to the upper surface of the diaphragm 21, a pressure adjusting screw 25 for changing the spring load of the pressure adjusting spring 24, and a motor output for vertically moving the pressure adjusting screw 25 while rotating. It is composed of a shaft 26 and a motor 28 that rotates the motor output shaft 26 via a speed reducer 27. When the pressure on the outlet 13 side becomes lower than the spring load of the pressure adjusting spring 24 according to the tightening amount of the pressure adjusting screw 25, the diaphragm 21 is displaced downward and the pilot valve 20 is opened, and the high pressure on the inlet 12 side is increased. Steam passages 18,1
By flowing into the piston chamber 17 through 9, the piston 16 is displaced downward, the valve body 15 is also opened downward, and the high pressure steam on the inlet 12 side is supplied to the outlet 13 side and the outlet 13 side is supplied.
Side pressure rises. When the pressure on the outlet 13 side rises, the pressure in the diaphragm chamber 22 also rises and the diaphragm 21 overcomes the spring force of the pressure adjusting spring 24 and is displaced upward, whereby the pilot valve 20 is closed and the piston chamber 17 is closed. When the supply of steam is cut off, the piston 1
By closing the valve 6 and the valve body 15 and stopping the supply of steam to the outlet 13 side, the outlet 13 side is maintained at a predetermined pressure.
【００１０】自動設定安全逃し弁５は図３に詳細を示す
ように、安全逃し弁部３０に圧力設定駆動部としてのア
クチュエ―タ３１を取付けたもので、安全逃し弁部３０
に入口３２と出口３３を設ける。入口３２を蒸気使用機
器１の上部と接続し、出口３３は大気に開放状態で配置
する。安全逃し弁部３０に入口３２と出口３３を連通遮
断する安全逃し弁口３４と弁体３５を配置し、弁体３５
に弁軸３６の一端を挿入し、弁軸３６下部に段部を形成
してバネ受け板３７を取付け、バネ受け板３７の上部に
圧力調節バネとしてのコイルバネ３８を配置しバネ３８
の上端にバネ押え板３９を介して圧力調節ネジ４０を取
付ける。圧力調節ネジ４０の内部空間に弁軸３６の上部
を隙間を介して配置する。圧力調節ネジ４０の上部はモ
―タ４１の出力軸４２とモ―タ減速器４２を介して接続
する。モ―タ４１の回転により圧力調節ネジ４０が回転
上下しバネ押え板３９が上下することにより、コイルバ
ネ３８の圧縮量が変化してバネ荷重が変化し、弁体３５
の弁口３４への着座力が調節されることによって安全逃
し弁部３０の吹出し圧力が所望値に設定されるものであ
る。As shown in detail in FIG. 3, the automatic setting safety relief valve 5 is a safety relief valve section 30 to which an actuator 31 as a pressure setting drive section is attached.
Is provided with an inlet 32 and an outlet 33. The inlet 32 is connected to the upper part of the steam-using device 1, and the outlet 33 is arranged open to the atmosphere. The safety relief valve portion 30 is provided with a safety relief valve opening 34 and a valve body 35 that cut off communication between the inlet 32 and the outlet 33.
One end of the valve shaft 36 is inserted into the valve shaft 36, a step portion is formed below the valve shaft 36, and a spring receiving plate 37 is attached to the spring receiving plate 37. A coil spring 38 as a pressure adjusting spring is arranged above the spring receiving plate 37.
A pressure adjusting screw 40 is attached to the upper end of the via a spring pressing plate 39. The upper portion of the valve shaft 36 is arranged in the internal space of the pressure adjusting screw 40 with a gap. The upper portion of the pressure adjusting screw 40 is connected to the output shaft 42 of the motor 41 via the motor decelerator 42. The rotation of the motor 41 causes the pressure adjusting screw 40 to rotate up and down and the spring retainer plate 39 to move up and down, thereby changing the compression amount of the coil spring 38 and changing the spring load.
The blowing pressure of the safety relief valve portion 30 is set to a desired value by adjusting the seating force of the valve seat 34 on the valve opening 34.
【００１１】自動設定減圧弁４と自動設定安全逃し弁５
には、共に図示はしていないがバネ２４，３８のたわみ
量を検出するためのポテンショメ―タ等を取付けると共
に、モ―タ２８，４１を駆動制御するための電気回路基
板等を取付ける。Automatic setting pressure reducing valve 4 and automatic setting safety relief valve 5
Although not shown in the figure, a potentiometer and the like for detecting the amount of deflection of the springs 24 and 38 are attached, and an electric circuit board and the like for driving and controlling the motors 28 and 41 are attached.
【００１２】次に作用を説明する。開閉弁３を開弁状態
とすることにより蒸気供給管２から蒸気が自動設定減圧
弁４に至り、所望値に減圧設定された圧力となって蒸気
使用機器１内に供給され図示しない被加熱物を加熱す
る。被加熱物を加熱して復水化した凝縮水はスチ―ムト
ラップ６から系外に排出される。自動設定減圧弁４の故
障等によって蒸気使用機器１内の圧力が異常昇圧し、自
動設定安全逃し弁５の設定圧力を越えると自動設定安全
逃し弁５が開弁して機器１内の蒸気圧力を大気に放出す
ることにより、蒸気使用機器１内の昇圧が解消され所定
圧力範囲に復帰する。Next, the operation will be described. By opening the on-off valve 3, the steam reaches the automatic setting pressure reducing valve 4 from the steam supply pipe 2, and the pressure is reduced to a desired value, and the pressure is supplied into the steam using device 1 to be heated (not shown). To heat. Condensed water obtained by heating and condensing the object to be heated is discharged from the steam trap 6 to the outside of the system. When the pressure inside the steam-using device 1 is abnormally increased due to a failure of the automatic setting pressure reducing valve 4 and exceeds the setting pressure of the automatic setting safety relief valve 5, the automatic setting safety relief valve 5 opens and the steam pressure in the equipment 1 Is released to the atmosphere, the pressure increase in the steam using device 1 is canceled and the pressure returns to a predetermined pressure range.
【００１３】蒸気使用機器１内の蒸気圧力を変更する場
合、圧力入力部８から所望圧力値を入力することにより
制御部７を経て、自動設定減圧弁４と自動設定安全逃し
弁５のそれぞれのモ―タ２８，４１が所定量回転して両
者の圧力が同時に且つ時間遅れを生じることなく設定さ
れる。自動設定安全逃し弁５の設定圧力は、例えば自動
設定減圧弁４の設定圧力の１．５倍とか２倍とかあるい
は０．３キロの圧力を加えた値等適宜選定するものとす
る。When changing the steam pressure in the steam-using device 1, by inputting a desired pressure value from the pressure input unit 8, the automatic setting pressure reducing valve 4 and the automatic setting safety relief valve 5 are passed through the control unit 7. The motors 28 and 41 rotate by a predetermined amount so that the pressures of both motors are set simultaneously and without any time delay. The set pressure of the automatic setting safety relief valve 5 is appropriately selected, for example, 1.5 times or 2 times the setting pressure of the automatic setting pressure reducing valve 4, or a value obtained by applying a pressure of 0.3 kg.
【００１４】圧力センサ―９からの検出圧力に応じて自
動設定減圧弁４の設定圧力を自動設定することもでき
る。また本実施例においては、蒸気供給管２から正圧す
なわち大気圧以上の蒸気を供給加熱する例を示したが、
自動設定減圧弁４と自動設定安全逃し弁５のバネ２４，
３８の荷重方向を逆、すなわち本実施例においては圧縮
バネの例であるが引張りバネとすることにより、大気圧
以下の負圧下の蒸気圧力であっても、機器内の圧力が低
下し過ぎた場合に大気圧を自動設定安全逃し弁５から吸
引することによって用いることができる。The set pressure of the automatic setting pressure reducing valve 4 can also be automatically set according to the pressure detected by the pressure sensor 9. Further, in the present embodiment, an example has been shown in which positive pressure, that is, atmospheric pressure or higher, is supplied from the steam supply pipe 2 and heated.
The spring 24 of the automatic setting pressure reducing valve 4 and the automatic setting safety relief valve 5,
Since the load direction of 38 is reversed, that is, a compression spring is used as an example in the present embodiment, a tension spring is used, so that the pressure in the device is too low even if the steam pressure is a negative pressure below atmospheric pressure. In this case, the atmospheric pressure can be used by sucking it from the automatically set safety relief valve 5.
【００１５】[0015]
【発明の効果】上記のように本発明によれば、流体供給
弁の圧力調節弁と、流体放出または吸引弁の弁手段と
を、圧力入力部からの信号によって同時に設定駆動する
ことができ、従来のように別々に設定する繁雑さがなく
なると共に、両者の設定に時間遅れを生じないために圧
力精度が向上する。As described above, according to the present invention, the pressure control valve of the fluid supply valve and the valve means of the fluid discharge or suction valve can be simultaneously set and driven by the signal from the pressure input section. Unlike the conventional case, the complexity of separately setting is eliminated, and since there is no time delay in setting both, pressure accuracy is improved.
【図１】本発明の流体圧力制御装置の実施例を示す構成
図である。FIG. 1 is a configuration diagram showing an embodiment of a fluid pressure control device of the present invention.
【図２】図１における自動設定減圧弁の断面図である。FIG. 2 is a sectional view of the automatic setting pressure reducing valve in FIG.
【図３】図１における自動設定安全逃し弁の断面図であ
る。FIG. 3 is a sectional view of the automatic setting safety relief valve in FIG.
１ 蒸気使用機器 ２ 蒸気供給管 ４ 自動設定減圧弁 ５ 自動設定安全逃し弁 ７ 制御部 ８ 圧力入力部 1 Steam-using equipment 2 Steam supply pipe 4 Automatic setting pressure reducing valve 5 Automatic setting safety relief valve 7 Control section 8 Pressure input section
Claims (1)
管を接続し、該供給管に流体圧力を調節する圧力調節弁
を取付け、流体使用機器に該機器内の圧力を放出または
機器内へ圧力を吸引する弁手段を連通し、上記圧力調節
弁と弁手段に所望圧力を設定する圧力設定駆動部を取付
け、該圧力設定駆動部に駆動信号を発する制御部を接続
し、該制御部に圧力調節弁と弁手段の所望圧力を入力す
る圧力入力部を接続した流体圧力制御装置。1. A fluid supply pipe for supplying a fluid to a device using fluid is connected to the supply pipe, and a pressure control valve for adjusting fluid pressure is attached to the device using fluid to release the pressure in the device or into the device. A pressure setting drive unit that sets a desired pressure is attached to the pressure control valve and the valve unit by communicating with a valve unit that sucks pressure, and a control unit that issues a drive signal is connected to the pressure setting drive unit. A fluid pressure control device in which a pressure control valve and a pressure input section for inputting a desired pressure of a valve means are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14835492A JPH05324094A (en) | 1992-05-15 | 1992-05-15 | Liquid pressure controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14835492A JPH05324094A (en) | 1992-05-15 | 1992-05-15 | Liquid pressure controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05324094A true JPH05324094A (en) | 1993-12-07 |
Family
ID=15450886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14835492A Pending JPH05324094A (en) | 1992-05-15 | 1992-05-15 | Liquid pressure controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05324094A (en) |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4517518Y1 (en) * | 1966-01-18 | 1970-07-17 |
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1992
- 1992-05-15 JP JP14835492A patent/JPH05324094A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4517518Y1 (en) * | 1966-01-18 | 1970-07-17 |
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