JP2550313Y2 - Fluid pressure control device - Google Patents
Fluid pressure control deviceInfo
- Publication number
- JP2550313Y2 JP2550313Y2 JP1990401895U JP40189590U JP2550313Y2 JP 2550313 Y2 JP2550313 Y2 JP 2550313Y2 JP 1990401895 U JP1990401895 U JP 1990401895U JP 40189590 U JP40189590 U JP 40189590U JP 2550313 Y2 JP2550313 Y2 JP 2550313Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- fluid pressure
- pressure
- chamber
- way control
- 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 - Lifetime
Links
Landscapes
- Control Of Fluid Pressure (AREA)
Description
【0001】[0001]
【産業上の利用分野】この考案は圧力変動の大きい流体
供給源と流体消費部の間に設けて圧力変動を一定巾にお
さえる流体圧力制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid pressure control device which is provided between a fluid supply source having a large pressure fluctuation and a fluid consuming section to keep the pressure fluctuation constant.
【0002】[0002]
【従来の技術】図6は従来装置を示すもので、1はサー
ジタンクを示し、このタンク1の一端にはLPガスなど
の燃料用ガスや、その他の原料用ガスなどの流体圧力源
に通じる流入管2を連結し、他端には消費設備に通じる
流出管3を連結する。上記流入管2には電磁弁4を設
け、タンク1上に上限設定用圧力スイッチ5、下限設定
用圧力スイッチ6を設ける。2. Description of the Related Art FIG. 6 shows a conventional apparatus, in which 1 indicates a surge tank, and one end of the tank 1 is connected to a fluid pressure source such as a fuel gas such as LP gas or other raw material gas. The inflow pipe 2 is connected, and the other end is connected to the outflow pipe 3 leading to the consuming equipment. An electromagnetic valve 4 is provided in the inflow pipe 2, and an upper limit setting pressure switch 5 and a lower limit setting pressure switch 6 are provided on the tank 1.
【0003】上記圧力スイッチ5、6の電源回路は電源
7に接続し、同圧力スイッチ5、6の出力回路は電磁弁
4に接続して、サージタンク1内の圧力変動に応じて上
記電磁弁4を開閉する。A power supply circuit of the pressure switches 5 and 6 is connected to a power supply 7, and an output circuit of the pressure switches 5 and 6 is connected to a solenoid valve 4. Open and close 4.
【0004】すなわち、タンク1内の圧力が上限に達す
ると、圧力スイッチ5からの信号が電磁弁4へ出力され
て電磁弁4が閉じるか絞られてタンク1内へのガスの供
給が停止されるか絞られてタンク1内の圧力が低下す
る。That is, when the pressure in the tank 1 reaches the upper limit, a signal from the pressure switch 5 is output to the solenoid valve 4, and the solenoid valve 4 is closed or throttled to stop the supply of gas into the tank 1. The pressure in the tank 1 is reduced.
【0005】また、タンク1内の圧力が下限まで下る
と、圧力スイッチ6からの信号が電磁弁4に出力され、
同電磁弁4が開放されて流体がタンク1内に供給され
る。いま一つの従来技術として、特開昭52−2212
7号公報に「自力式減圧弁用調圧器」が提案されてい
る。 これは、一次圧と二次圧との圧力差によって生ずる
ダイヤフラム中心の連通孔からの流体流出量の連続変化
により、連続的に制御するものである。 When the pressure in the tank 1 drops to the lower limit, a signal from the pressure switch 6 is output to the solenoid valve 4,
The fluid is supplied into the tank 1 by opening the solenoid valve 4. Another prior art is disclosed in Japanese Patent Application Laid-Open No. 52-2212.
No. 7 proposes a "pressure regulator for self-acting pressure reducing valve".
You. This is caused by the pressure difference between the primary pressure and the secondary pressure
Continuous change of fluid outflow from the communication hole at the center of the diaphragm
Is controlled continuously.
【0006】[0006]
【考案が解決しようとする課題】上記の従来装置の場
合、電磁弁4や圧力スイッチ5、6を作用させるための
電力を供給する電気設備が必要であるため、可燃性ガス
を使用する現場などに設ける場合、その電気設備を防爆
構造にする必要がある。このため、設備コストが高くな
るなどの問題が生じる。また、後者の調圧器は、一見構
造が簡単なように見られるが外気温の変化等環境の変化
により制御レベルが変動し、又機構中に異物が侵入する
と動作不能の状態になる恐れがあって、実使上調整が極
めて困難であることがうかがえる。 In the case of the above-mentioned conventional apparatus, electric facilities for supplying electric power for operating the solenoid valve 4 and the pressure switches 5 and 6 are required. , It is necessary to make the electrical equipment explosion-proof. For this reason, problems such as an increase in equipment costs occur. Also, the latter pressure regulator is seemingly
It seems that the structure is simple, but changes in the environment such as changes in outside temperature
Causes the control level to fluctuate, and foreign matter enters the mechanism
Operation may not be possible,
It seems that it is difficult.
【0007】この考案の課題は、上記の問題を解決する
ために、電力を全く用いることなく流体圧力を一定範囲
に保持する流体圧力調整装置を提供することである。[0007] An object of the present invention is to provide a fluid pressure adjusting device which maintains a fluid pressure within a certain range without using any electric power in order to solve the above-mentioned problem.
【0008】[0008]
【課題を解決するための手段】上記の課題を解決するた
めに、この考案は、操作部に加えられる流体圧力の高低
で流体圧力源側と流体消費設備側とを連通または遮断さ
せる開閉弁と、同じく流体圧力の高低で流路を切り替え
る三方制御弁とからなり、上記三方制御弁の一方を、開
閉弁の開閉設定圧力より高い流体圧力源側に、他方を、
開閉弁の開閉設定圧力より低い流体圧力の感知部に、残
りの一方を、開閉弁の操作部に接続して、上記三方制御
弁が感知部の流体圧力を感知して、上記開閉弁の操作部
と流体圧力源のみを導通させて上記開閉弁を閉じる場合
と、上記操作部と上記感知部のみを導通させて上記開閉
弁を開く場合とに切り替えられるようにした流体圧力制
御装置において、 上記三方制御弁を、スプリングにより
付勢されたダイヤフラムを配置したダイヤフラム室と、
ギャップ形成のための空間を有する下部弁体とスプリン
グおよび上部弁体を同軸に積み上げ、これら三個の部材
を上記ダイヤフラムの中心から垂下した弁棒下端の凸部
によって上記空間により上下方向の遊びをもって吊り下
げられ、上記弁棒の上部突起が上側弁体の上部に位置す
るように内装した三方切り替え弁室とから構成したので
ある。 In order to solve the above problems BRIEF SUMMARY OF THE INVENTION This invention is communicating or blocking of a fluid pressure source side and the fluid consuming equipment-side at the level of the fluid pressure that is applied to the operating unit
Off valve to, likewise consists of a <br/> Ru way control valve instead disconnect the flow path in the high and low fluid pressure, one of the three-way control valve, the high fluid pressure source side of the opening and closing the set pressure of the on-off valve and the other,
The sensing portion of the lower fluid pressure than the opening set pressure of the on-off valve, the remaining one, connected to the operating portion of the opening and closing valves, the three-way control valve senses the fluid pressure of the sensing portion, the operation of the on-off valve and if the parts and is made conductive only source of fluid pressure by closing the on-off valve, the opening and closing by conducting only the operation unit and the sensing unit
A fluid pressure control apparatus that is replaced Ri switch to and when to open the valve, the three-way control valve, by a spring
A diaphragm chamber in which the biased diaphragm is arranged;
Lower valve body and spring with space for gap formation
And the upper valve body are stacked coaxially, and these three members
The convex part of the lower end of the valve stem that hangs down from the center of the diaphragm
Suspended with play in the vertical direction by the above space
The upper projection of the valve stem is located on the upper part of the upper valve body.
And a three-way switching valve room
is there.
【0009】[0009]
【作用】この考案は上記の構成であるから、感知部の流
体圧力が三方制御弁の設定圧力より下ると、この三方制
御弁が切替えられて、開閉弁の操作部が作用して開閉弁
が開き圧力流体を消費設備側のチャンバーなどに流入さ
せる。According to the present invention, when the fluid pressure of the sensing portion falls below the set pressure of the three-way control valve, the three-way control valve is switched, and the operating portion of the on-off valve operates to open the on-off valve. The opening pressure fluid flows into a chamber or the like on the side of the consuming equipment.
【0010】また、感知部の流体圧力が三方制御弁の設
定圧力より高くなると、同三方制御弁が切替えられて開
閉弁の操作部が作用し、開閉弁が閉じる。When the fluid pressure of the sensing section becomes higher than the set pressure of the three-way control valve, the three-way control valve is switched, the operation section of the on-off valve operates, and the on-off valve is closed.
【0011】[0011]
【実施例】図1および図2に示す第1の実施例におい
て、11はチャンバーを示し、その一端に流体圧力源に
通じる流入管12、他端に消費設備に通じる流出管13
を連通させる。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the first embodiment shown in FIGS. 1 and 2, reference numeral 11 denotes a chamber, one end of which has an inflow pipe 12 which leads to a fluid pressure source, and the other end of which has an outflow pipe 13 which leads to a consuming facility.
Communication.
【0012】上記流入管12には操作部16のダイヤフ
ラム14により開閉される弁体10を有する開閉弁15
を設け、この弁15よりも流体圧力源寄りの流入管12
の一部に連通路24を介してダイヤフラム17により作
動する三方制御弁20を接続する。An on-off valve 15 having a valve element 10 which is opened and closed by a diaphragm 14 of an operation section 16 is provided in the inflow pipe 12.
And the inflow pipe 12 closer to the fluid pressure source than the valve 15
A three-way control valve 20 operated by the diaphragm 17 is connected to a part of the valve through a communication path 24.
【0013】前記開閉弁15のダイヤフラム室21の下
室と上記三方制御弁20の弁室19の中間部とを連通路
22で連通させ、ダイヤフラム室21の上室は大気に通
じるとともに、ダイヤフラム14を押下するばね23を
設ける。The lower chamber of the diaphragm chamber 21 of the on-off valve 15 communicates with the intermediate portion of the valve chamber 19 of the three-way control valve 20 through a communication passage 22. The upper chamber of the diaphragm chamber 21 communicates with the atmosphere and the diaphragm 14 Is provided.
【0014】上記三方制御弁20の弁室19の下端には
前記連通路24に通じる下部弁口を設け、この下部弁口
を開閉する下部弁体25を弁室19内下部に設ける。2
6は上記ダイヤフラム17に上端を連結した弁棒で、そ
の下端は上記下部弁体25に一定の範囲の上下方向の遊
びを有する状態で連結する。At the lower end of the valve chamber 19 of the three-way control valve 20, a lower valve port communicating with the communication passage 24 is provided, and a lower valve body 25 for opening and closing the lower valve port is provided at a lower portion inside the valve chamber 19. 2
Reference numeral 6 denotes a valve stem having an upper end connected to the diaphragm 17 and a lower end connected to the lower valve body 25 with a certain range of vertical play.
【0015】また、上記弁棒26の中間部には、上部弁
体27を昇降自在に装着し、下部弁体25と上部弁体2
7間に押ばね30を介在させ、弁棒26の上部寄りの突
部31により上部弁体27を押下し得るようにする。An upper valve body 27 is mounted at an intermediate portion of the valve rod 26 so as to be movable up and down.
A pressing spring 30 is interposed between the upper and lower portions 7 so that the upper valve body 27 can be pressed down by the protrusion 31 near the upper portion of the valve rod 26.
【0016】32は三方制御弁20のダイヤフラム室
で、その下室に連通する連通路33は前記チャンバー1
1に設けた圧力感知部34に連通させる。また、前記ダ
イヤフラム室32の下室と弁室19の間には前記上部弁
体27で開閉される上部弁口を設ける。さらに、ダイヤ
フラム室32の上室は大気に通じるとともにダイヤフラ
ム17を押下するばね35を設ける。Reference numeral 32 denotes a diaphragm chamber of the three-way control valve 20, and a communication passage 33 communicating with a lower chamber of the three-way control valve 20 is provided in the chamber 1
1 and is communicated with the pressure sensing unit 34 provided in the unit 1. An upper valve opening which is opened and closed by the upper valve body 27 is provided between the lower chamber of the diaphragm chamber 32 and the valve chamber 19. Further, the upper chamber of the diaphragm chamber 32 is provided with a spring 35 that communicates with the atmosphere and presses down the diaphragm 17.
【0017】図1はチャンバー11内の圧力、すなわ
ち、圧力感知部34がばね35による三方制御弁20の
設定圧力より低い場合で、三方制御弁20のダイヤフラ
ム17がばね35の力で下り、弁棒26の突部31で上
部弁体27が押し下げられてダイヤフラム室32の下室
と弁室19が通じ、下部弁体25は下部弁口を閉じて連
通路24と弁室19を遮断している。従って弁室19は
圧力感知部34と同圧になるので、開閉弁15のダイヤ
フラム14もばね23で押し下げられ弁体10が開閉弁
15の弁口を開く(圧力感知部34の圧力は開閉弁15
のばね23による設定圧力より低い)。消費設備におけ
る流体の使用量が減少するなどの理由により圧力感知部
34の圧力が三方制御弁20の設定圧力より高くなる
と、図2のようにダイヤフラム17が上り、上部弁体2
7がまず上部弁口を閉じ、続いて弁棒26に設けた凸部
31と上・下弁体25・27とのギャップによって生ず
るタイムラグをもって、弁棒26が下部弁体25を吊り
上げて下部弁口を開くのでダイヤフラム室21の下室に
流体圧力源の圧力が入り、ダイヤフラム14を押し上げ
て弁体10で開閉弁15の弁口を閉じる。従ってチャン
バー11内への流体の供給が止る。FIG. 1 shows the case where the pressure in the chamber 11, that is, the pressure sensing unit 34 is lower than the set pressure of the three-way control valve 20 by the spring 35, and the diaphragm 17 of the three-way control valve 20 is lowered by the force of the spring 35, The upper valve body 27 is pushed down by the projection 31 of the rod 26, and the lower chamber of the diaphragm chamber 32 communicates with the valve chamber 19, and the lower valve body 25 closes the lower valve port to shut off the communication passage 24 and the valve chamber 19. I have. Accordingly, the valve chamber 19 has the same pressure as that of the pressure sensor 34, so that the diaphragm 14 of the on-off valve 15 is also pushed down by the spring 23, and the valve body 10 opens the valve port of the on-off valve 15 (the pressure of the pressure sensor 34 is reduced Fifteen
Lower than the pressure set by the spring 23). When the pressure of the pressure sensing unit 34 becomes higher than the set pressure of the three-way control valve 20 due to a decrease in the amount of fluid used in the consuming equipment, the diaphragm 17 moves up as shown in FIG.
Reference numeral 7 first closes the upper valve port, and then the convex portion provided on the valve stem 26
Not created due to the gap between the upper and lower valve bodies 25 and 27
With a time lag , the valve stem 26 lifts the lower valve body 25 and opens the lower valve port, so that the pressure of the fluid pressure source enters the lower chamber of the diaphragm chamber 21, pushes up the diaphragm 14 and raises the valve of the on-off valve 15 with the valve body 10. Close your mouth. Therefore, the supply of the fluid into the chamber 11 stops.
【0018】つぎに、また、圧力感知部34の圧力が下
ってくると、三方制御弁20のダイヤフラム17が下
り、まず下部弁体25が下部弁口を閉じる。続いて上部
弁体27が上部弁口を開き、ダイヤフラム室21の下室
の圧力が下り、ばね23によりダイヤフラム14が下っ
て弁体10が開閉弁15の弁口を開き、チャンバー11
へ流体を供給する。Next, when the pressure of the pressure sensing portion 34 decreases, the diaphragm 17 of the three-way control valve 20 descends, and the lower valve body 25 first closes the lower valve port. Subsequently, the upper valve body 27 opens the upper valve port, the pressure in the lower chamber of the diaphragm chamber 21 decreases, the diaphragm 14 is lowered by the spring 23, the valve element 10 opens the valve port of the on-off valve 15, and the chamber 11 opens.
Supply fluid to
【0019】図3は上記実施例1のフローシートを示す
もので、図4の実施例2は上記フローシートのチャンバ
ー11のかわりに空気入口37を有するベンチューリー
ミキサー36を設け流出管13に圧力感知部34を設け
たものであり、その他は図1ないし図3の実施例1と同
じであり、作用も同じである。FIG. 3 shows the flow sheet of the first embodiment. In the second embodiment of FIG. 4, a venturi mixer 36 having an air inlet 37 is provided instead of the chamber 11 of the flow sheet, and a pressure is applied to the outflow pipe 13. This embodiment is provided with a sensing unit 34, and the other components are the same as those of the first embodiment shown in FIGS. 1 to 3, and the operation is the same.
【0020】図5は開閉弁15と三方制御弁20をそれ
ぞれ二組設けたもので、チャンバー11は大型とし、各
開閉弁15の出口はチャンバー11に連通させ、チャン
バー11に消費設備に流体を送る配管40を連結する。
この実施例3の場合も実施例1と同じ作用を有してい
る。FIG. 5 shows two sets of on-off valves 15 and three-way control valves 20, each having a large chamber 11. The outlet of each on-off valve 15 is communicated with the chamber 11, and the chamber 11 is used to supply fluid to consuming equipment. The feed pipe 40 is connected.
The third embodiment also has the same operation as the first embodiment.
【0021】[0021]
【効果】この考案は上記のように操作部に加える流体圧
力の高低で流体圧力源と流体消費設備とを連通または遮
断する弁を開閉させる開閉弁と、同じく流体圧力の高低
で流路を切替える三方制御弁を設け、感知部に加わる流
体圧力の高低により開閉弁を自動的に開閉して消費設備
に送る流体圧力を制御するものであるから、従来装置の
ような制御用の電力は全く不要となる。従って可燃性ガ
スを用いるような危険な場所にも、特別な防爆構造を施
すことなく使用できるので設備に要するコストを下げる
ことができる。According to the present invention, as described above, an opening / closing valve for opening and closing a valve for communicating or shutting off a fluid pressure source and a fluid consuming facility according to the level of the fluid pressure applied to the operation unit, and switching the flow path also according to the level of the fluid pressure. A three-way control valve is provided to automatically open and close the on-off valve according to the level of fluid pressure applied to the sensing unit to control the fluid pressure sent to the consuming equipment. Becomes Therefore, it can be used in a dangerous place where a combustible gas is used without providing a special explosion-proof structure, so that the cost required for the equipment can be reduced.
【図1】実施例1の開閉弁開放時の断面図FIG. 1 is a cross-sectional view of a first embodiment when an on-off valve is opened.
【図2】実施例1の開閉弁閉鎖時の断面図FIG. 2 is a cross-sectional view of the first embodiment when the on-off valve is closed.
【図3】実施例1のフローシートFIG. 3 is a flow sheet of Example 1.
【図4】実施例2のフローシートFIG. 4 is a flow sheet of Example 2.
【図5】実施例3のフローシートFIG. 5 is a flow sheet of Example 3.
【図6】従来例のフローシートFIG. 6 is a conventional flow sheet.
15 開閉弁 16 操作部 19 弁室 20 三方制御弁 34 感知部 15 On-off valve 16 Operation part 19 Valve room 20 Three-way control valve 34 Sensing part
Claims (1)
体圧力源側と流体消費設備側とを連通または遮断させる
開閉弁と、同じく流体圧力の高低で流路を切り替える三
方制御弁とからなり、上記三方制御弁の一方を、開閉弁
の開閉設定圧力より高い流体圧力源側に、他方を、開閉
弁の開閉設定圧力より低い流体圧力の感知部に、残りの
一方を、開閉弁の操作部に接続して、上記三方制御弁が
感知部の流体圧力を感知して、上記開閉弁の操作部と流
体圧力源のみを導通させて上記開閉弁を閉じる場合と、
上記操作部と上記感知部のみを導通させて上記開閉弁を
開く場合とに切り替えられるようにした流体圧力制御装
置において、 上記三方制御弁を、スプリングにより付勢されたダイヤ
フラムを配置したダイヤフラム室と、ギャップ形成のた
めの空間を有する下部弁体とスプリングおよび上部弁体
を同軸に積み上げ、これら三個の部材を上記ダイヤフラ
ムの中心から垂下した弁棒下端の凸部によって上記空間
により上下方向の遊びをもって吊り下げられ、上記弁棒
の上部突起が上側弁体の上部に位置するように内装した
三方切り替え弁室とから構成してなることを特徴とする
流体圧力制御装置。1. A fluid pressure source side and the fluid consuming equipment-side at the level of the fluid pressure that is applied to the operating element and the communicating or blocking causes <br/> off valve, turn off the flow path also in high and low fluid pressure consists of a changing three-way control valve, one of the three-way control valve, the high fluid pressure source side of the opening and closing the set pressure of the on-off valve, the other, the sensing portion of the lower opening and closing the set pressure of the on-off valve fluid pressure, the remaining one, connected to the operating portion of the opening and closing valves, the three-way control valve senses the fluid pressure of the sensing portion, and if allowed to conduct only the operation unit and the fluid pressure source of the on-off valve closes the on-off valve ,
A fluid pressure control apparatus that is replaced Ri switch to the case where by conducting only the operation unit and the sensing unit opens the closing valve, the three-way control valve, which is biased by a spring diamond
The diaphragm chamber in which the
, Lower valve body and spring with upper space
Are stacked coaxially, and these three members are
The space at the lower end of the valve stem that hangs from the center of the
The valve stem is suspended with play in the vertical direction.
The upper projection is located above the upper valve body.
A fluid pressure control device comprising a three-way switching valve chamber .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990401895U JP2550313Y2 (en) | 1990-12-26 | 1990-12-26 | Fluid pressure control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990401895U JP2550313Y2 (en) | 1990-12-26 | 1990-12-26 | Fluid pressure control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0493306U JPH0493306U (en) | 1992-08-13 |
JP2550313Y2 true JP2550313Y2 (en) | 1997-10-08 |
Family
ID=31879915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1990401895U Expired - Lifetime JP2550313Y2 (en) | 1990-12-26 | 1990-12-26 | Fluid pressure control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2550313Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5744476B2 (en) * | 2010-11-04 | 2015-07-08 | 東京瓦斯株式会社 | Decompressor |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5222127A (en) * | 1975-08-13 | 1977-02-19 | Osaka Gas Co Ltd | Pressure controller for self pressure reducing valve |
-
1990
- 1990-12-26 JP JP1990401895U patent/JP2550313Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0493306U (en) | 1992-08-13 |
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