JPS6259621B2 - - Google Patents
Info
- Publication number
- JPS6259621B2 JPS6259621B2 JP56152582A JP15258281A JPS6259621B2 JP S6259621 B2 JPS6259621 B2 JP S6259621B2 JP 56152582 A JP56152582 A JP 56152582A JP 15258281 A JP15258281 A JP 15258281A JP S6259621 B2 JPS6259621 B2 JP S6259621B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- valve
- pressure
- flow rate
- mixer
- 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
- 239000000872 buffer Substances 0.000 claims description 18
- 239000007789 gas Substances 0.000 description 63
- 230000001105 regulatory effect Effects 0.000 description 19
- 238000010586 diagram Methods 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/10—Mixing gases with gases
- B01F23/19—Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Feeding And Controlling Fuel (AREA)
- Accessories For Mixers (AREA)
Description
【発明の詳細な説明】
この発明は、複数の異なつたガスを混合するた
めの比較的安価なガス混合器において、混合ガス
の使用量の変動に左右されることなく混合精度を
向上したガス混合装置に関する。Detailed Description of the Invention The present invention provides a gas mixer that improves mixing accuracy without being affected by fluctuations in the amount of mixed gas used in a relatively inexpensive gas mixer for mixing a plurality of different gases. Regarding equipment.
従来、混合精度が厳密に要求されることのない
比較的安価なガス混合器としては一般に第１図に
示すものが使用されている。 Conventionally, the one shown in FIG. 1 has generally been used as a relatively inexpensive gas mixer for which mixing accuracy is not strictly required.
第１図は２種類のガスを混合するための一般的
な系統図である。今ＡガスとＢガスをある比率Ｘ
で混合する場合、ボンベ等の気蓄設備より導かれ
たＡガスは減圧弁１により一定圧力に調整され、
流量計２を通り、流量調整弁４により流量を調整
してミキサー９に至る。一方Ｂガスも同様に減圧
弁５によりＡガスと同圧に調整され、流量計６を
通り、流量調整弁８により混合比率Ｘになるよう
に流量を調整してミキサー９に至る。ミキサー９
で混合された混合ガスは電磁弁１２を通りバツフ
アタンク１１に供給される。このバツフアタンク
１１は混合ガスの使用量変動を緩衝するものであ
り、流量が変動した場合バツフアタンクに付設し
た圧力スイツチにより電磁弁１２を開閉して流量
を制御するのである。 FIG. 1 is a general system diagram for mixing two gases. Now the ratio of A gas and B gas is X
When mixing with gas, the A gas led from the gas storage equipment such as a cylinder is adjusted to a constant pressure by the pressure reducing valve 1,
It passes through a flow meter 2, the flow rate is adjusted by a flow rate regulating valve 4, and reaches a mixer 9. On the other hand, B gas is similarly adjusted to the same pressure as A gas by a pressure reducing valve 5, passes through a flow meter 6, and reaches a mixer 9 where the flow rate is adjusted to a mixing ratio X by a flow rate adjustment valve 8. mixer 9
The mixed gas is supplied to the buffer tank 11 through the electromagnetic valve 12. This buffer tank 11 buffers fluctuations in the usage amount of the mixed gas, and when the flow rate fluctuates, a pressure switch attached to the buffer tank opens and closes the electromagnetic valve 12 to control the flow rate.
しかし、以上の操作系において、ある混合圧力
の仕様点の混合比がＸになるよう流量調整弁４，
８を調整した場合、混合ガスの使用量が増減し混
合圧力が変動した際には混合比率Ｘが設定値より
ずれる。これは、主にＡガスの減圧弁１から流量
調整弁４の流路抵抗と、Ｂガスの減圧弁５から流
量調整弁８の間の流路抵抗にずれが起ることに起
因するのである。又ガス流量の制御を行う際電磁
弁１２は瞬間的に開閉するため（第４図の破線を
参照）、電磁弁の上流側に急激な圧力変動が生
じ、機器の寿命に悪影響を与え、又電磁弁の構造
上弁が均一に押圧されず、漏れを生じやすく、そ
のためガス濃度が変動しやすい。 However, in the above operation system, the flow rate regulating valve 4,
8, the mixing ratio X will deviate from the set value when the amount of mixed gas used increases or decreases and the mixing pressure fluctuates. This is mainly due to a difference in the flow path resistance between the A gas pressure reducing valve 1 and the flow rate adjustment valve 4 and the B gas path resistance between the pressure reduction valve 5 and the flow rate adjustment valve 8. . In addition, since the solenoid valve 12 opens and closes instantaneously when controlling the gas flow rate (see the broken line in Figure 4), rapid pressure fluctuations occur on the upstream side of the solenoid valve, which adversely affects the life of the equipment. Due to the structure of electromagnetic valves, the valve is not pressed uniformly, which tends to cause leakage, and therefore the gas concentration tends to fluctuate.
この発明は、かかる欠点を除くため、Ａガスと
Ｂガスの減圧弁と流量調整弁の間における流路抵
抗のずれを差圧調整弁で調整制御して混合精度を
向上させたガス混合装置を提案するものである。 In order to eliminate this drawback, the present invention provides a gas mixing device in which the difference in flow path resistance between the pressure reducing valve and the flow rate regulating valve for A gas and B gas is adjusted and controlled by a differential pressure regulating valve to improve mixing accuracy. This is a proposal.
すなわち、この発明は、減圧弁、流量計、差圧
調整弁、流量調整弁を有する配管の複数を並列し
てミキサーの入側に接続し、バツフアタンクの混
合ガス圧あるいは入側の任意のガス圧等を動力源
とするスピードコントロール付弁を介してバツフ
アタンクをミキサーの出側に接続したことを要旨
とする。 That is, this invention connects a plurality of piping having a pressure reducing valve, a flow meter, a differential pressure regulating valve, and a flow regulating valve in parallel to the inlet side of a mixer, and adjusts the mixed gas pressure of the buffer tank or any gas pressure on the inlet side. The main point is that the buffer tank is connected to the output side of the mixer via a speed control valve powered by a motor.
次に、この発明の実施例として、ＡガスとＢガ
スの２つを混合する場合の装置を図面について説
明する。 Next, as an embodiment of the present invention, an apparatus for mixing two gases, A gas and B gas, will be described with reference to the drawings.
第２図に示すように、ボンベ等の気蓄設備より
導かれるＡガスは減圧弁１、流量計２、差圧調整
弁３、流量調整弁４を有する配管で、又Ｂガスは
減圧弁５、流量計６、差圧調整弁７、流量調整弁
８を有する配管で送るようにし、それぞれの下流
側管端をミキサー９の入側に接続する。そしてミ
キサー９の出側にスピードコントロール付弁１０
を介してバツフアタンク１１を接続する。 As shown in Figure 2, A gas led from gas storage equipment such as a cylinder is piped with a pressure reducing valve 1, a flow meter 2, a differential pressure regulating valve 3, and a flow regulating valve 4, and B gas is guided through a pressure reducing valve 5. , a flow meter 6, a differential pressure regulating valve 7, and a flow regulating valve 8, and the downstream end of each pipe is connected to the inlet side of the mixer 9. And a valve 10 with speed control is placed on the outlet side of the mixer 9.
The buffer tank 11 is connected through.
上記差圧調整弁３，７は、第２図に図示するよ
うに流量調整弁４，８と同一構造の例えばニード
ル弁を使用し、ＡガスとＢガスの減圧弁と流量調
整弁の間における流路抵抗のずれを調整するもの
である。 The differential pressure regulating valves 3 and 7 are, for example, needle valves having the same structure as the flow regulating valves 4 and 8, as shown in FIG. This is to adjust the deviation in flow path resistance.
すなわち、ＡガスとＢガスは、それぞれ減圧弁
１，５により減圧弁下流側の圧力が同一圧力とな
るように調整される。しかし、流量調整弁４，８
の上流側の圧力は流量計、配管等の固有の流路抵
抗により同圧とはならず、ずれを生じる。そこ
で、Ａガス通路又はＢガス通路のうち流路抵抗の
小さい側、すなわち流量調整弁４又は８の上流側
圧力が高い側の差圧調整弁３又は７を操作して流
路抵抗を増加せしめ流路調整弁４，８の上流側圧
力を同一に調整する。 That is, A gas and B gas are adjusted by the pressure reducing valves 1 and 5, respectively, so that the pressures on the downstream side of the pressure reducing valves are the same pressure. However, the flow rate adjustment valves 4 and 8
The pressure on the upstream side of the flowmeter is not the same due to the inherent flow path resistance of the flow meter, piping, etc., and a deviation occurs. Therefore, the flow path resistance is increased by operating the differential pressure regulating valve 3 or 7 on the side of the A gas passage or the B gas passage where the flow passage resistance is low, that is, the side where the upstream pressure of the flow rate regulating valve 4 or 8 is high. The upstream pressures of the flow path regulating valves 4 and 8 are adjusted to be the same.
又、上記スピードコントロール付弁１０はバツ
フアタンク１１の混合ガス圧あるいは入側の任意
のガス圧を動力源として、バツフアタンク１１か
らの混合ガス流出量の変動に伴つて開閉するもの
でボール弁等を使用する。 The speed control valve 10 is powered by the mixed gas pressure in the buffer tank 11 or any gas pressure on the inlet side, and opens and closes according to fluctuations in the amount of mixed gas flowing out from the buffer tank 11, and uses a ball valve or the like. do.
そのスピードコントロール付弁の一例を第３図
に示す。この弁はバツフアタンク１１に付設した
圧力スイツチよりの開閉信号により作動する５孔
の電磁弁１３と２つの絞り弁１４―１，１４―２
からなるコントロール部とシリンダ１５で開閉操
作されるボール弁１６からなる。そして、圧力ス
イツチから開信号を受けた状態では、動力源ガス
は通路ａから通路ｂを通りシリンダ１５のＢ室に
入り、ピストンを押動しアーム１６―１を回動し
てボール弁１６を開く。この際、Ａ室にあるガス
は通路ｃから通路ｄを通り絞り弁１４―１を経て
系外へゆつくり放出される。又、圧力信号から閉
信号を受けると、電磁弁１３は図において右行し
通路ａと通路ｃ及び通路ｂと通路ｅがそれぞれ連
通し、動力源ガスはＡ室に入りピストンは逆に押
動されボール弁１６は閉じる。 An example of such a valve with speed control is shown in Fig. 3. This valve consists of a 5-hole solenoid valve 13 and two throttle valves 14-1 and 14-2, which are operated by an open/close signal from a pressure switch attached to the buffer tank 11.
It consists of a control section consisting of a ball valve 16 which is opened and closed by a cylinder 15. When an open signal is received from the pressure switch, the power source gas passes from passage a to passage b and enters chamber B of cylinder 15, pushes the piston, rotates arm 16-1, and opens ball valve 16. open. At this time, the gas in the A chamber is slowly discharged from the passage c to the passage d to the outside of the system via the throttle valve 14-1. When a closing signal is received from the pressure signal, the solenoid valve 13 moves to the right in the figure, and passages a and c and passages b and e are communicated with each other, and the power source gas enters chamber A and the piston is pushed in the opposite direction. and the ball valve 16 is closed.
上記ボール弁１６の開閉動作はシリンダからの
ガス排出が絞り弁１４―１，１４―２を経て緩慢
に行われ、弁開閉時のガス流量は第４図に実線で
示すように、緩慢に変化させることができる。 In the opening and closing operation of the ball valve 16, gas is discharged from the cylinder slowly through the throttle valves 14-1 and 14-2, and the gas flow rate when the valve is opened and closed changes slowly, as shown by the solid line in Fig. 4. can be done.
今、ＡガスとＢガス混合比率Ｘで混合する場合
の操作について説明する。Ａガスは減圧弁１によ
り一定圧力に調整され、流量計２、差圧調整弁３
を通り、流量調整弁４により流量を調整してミキ
サー９に至る。一方Ｂガスも同様に減圧弁５によ
りＡガスの圧力と同圧に調整され、流量計６、差
圧調整弁７を通り、流量調整弁８により混合比率
Ｘとなように流量調整してミキサー９に至る。ミ
キサー９では両ガスを混合し、スピードコントロ
ール付弁１０を通りバツフアタンク１１に供給さ
れる。バツフアタンクは混合ガスの使用量の変動
を緩衝するものであり、流量が少なくなればバツ
フアタンク内の混合ガス圧の変動に伴いバツフア
タンクに設けた圧力スイツチが作動して前記のご
とくスピードコントロール付弁１０を開閉して混
合ガス流量を制御する。 Now, the operation for mixing A gas and B gas at a mixing ratio of X will be explained. A gas is regulated to a constant pressure by a pressure reducing valve 1, a flow meter 2, and a differential pressure regulating valve 3.
The flow rate is adjusted by the flow rate regulating valve 4 and reaches the mixer 9. On the other hand, B gas is similarly adjusted to the same pressure as A gas by the pressure reducing valve 5, passes through the flow meter 6 and the differential pressure adjustment valve 7, and the flow rate is adjusted to the mixing ratio X by the flow adjustment valve 8, and the mixer It reaches 9. A mixer 9 mixes both gases, and the mixture is supplied to a buffer tank 11 through a speed control valve 10. The buffer tank buffers fluctuations in the amount of mixed gas used, and when the flow rate decreases, the pressure switch installed in the buffer tank operates as the mixed gas pressure in the buffer tank changes, and the speed control valve 10 is activated as described above. Open and close to control the mixed gas flow rate.
混合ガス圧力と混合ガス流量との関係につい
て、第１図に示す従来装置及び第２図に示す発明
装置を使つて試験した。その結果は第５図に示す
ように、両者の間には差異は認められなかつた。 The relationship between the mixed gas pressure and the mixed gas flow rate was tested using the conventional device shown in FIG. 1 and the inventive device shown in FIG. 2. As shown in FIG. 5, no difference was observed between the two.
又、混合ガス圧力と混合精度との関係について
試験した結果を第６図に示す。従来装置を使つた
場合には、破線で示すように、混合ガス圧力が設
定点より変動すると混合比率が変化し、混合精度
が８〜10％低下して悪くなり、発明装置を使つた
場合にには、実線で示すように、混合ガス圧力が
変動しても混合比率の変化が小さく混合精度は１
〜２％程度の変化に押えられていることがわか
る。 Further, FIG. 6 shows the results of a test regarding the relationship between mixed gas pressure and mixing accuracy. When using the conventional device, as shown by the broken line, when the mixed gas pressure fluctuates from the set point, the mixing ratio changes and the mixing accuracy deteriorates by 8 to 10%, whereas when using the inventive device, As shown by the solid line, even if the mixed gas pressure fluctuates, the change in the mixing ratio is small and the mixing accuracy is 1.
It can be seen that the change has been suppressed to about 2%.
この発明は、上記のごとく、配管中に差圧調整
弁を設けたことにより流路抵抗のずれに伴う混合
比率設定値のずれを防ぎ常に良好な混合精度に維
持できると共に、スピードコントロール付弁には
ボール弁を使用することができ電磁弁にみられる
ようなガス漏れを生じることがなく、又弁開閉が
緩慢に行われ、急激な圧力変動の発生を阻止でき
る。 As described above, by providing a differential pressure regulating valve in the piping, this invention prevents deviations in the mixing ratio set value due to deviations in flow path resistance, making it possible to always maintain good mixing accuracy. Since a ball valve can be used, there is no gas leakage as seen with electromagnetic valves, and the valve opens and closes slowly, preventing sudden pressure fluctuations.
第１図は従来の一般的なガス混合装置の配管
図、第２図はこの発明の一実施例の配管図、第３
図はこの発明の一実施例におけるスピードコント
ロール付弁を示す説明図、第４図はスピードコン
トロール付弁（実線）と電磁弁（破線）の弁開閉
時のガス流量の変化を示すグラフ、第５図は従来
装置（破線）とこの発明装置（実線）の混合ガス
圧力と混合ガス流量の関係を示すグラフ、第６図
は同じく混合ガス圧力と混合精度の関係を示すグ
ラフである。
１，５……減圧弁、２，６……流量計、３，７
……差圧調整弁、４，８……流量調整弁、９……
ミキサー、１０……スピードコントロール付弁、
１１……バツフアタンク、１２……電磁弁、１３
……電磁弁、１４―１，１４―２……絞り弁、１
５……シリンダ、１６……ボール弁。
Fig. 1 is a piping diagram of a conventional general gas mixing device, Fig. 2 is a piping diagram of an embodiment of the present invention, and Fig. 3 is a piping diagram of a conventional general gas mixing device.
The figure is an explanatory diagram showing a speed control valve according to an embodiment of the present invention, FIG. The figure is a graph showing the relationship between the mixed gas pressure and the mixed gas flow rate for the conventional device (broken line) and the device of the present invention (solid line), and FIG. 6 is a graph similarly showing the relationship between the mixed gas pressure and mixing accuracy. 1, 5...Reducing valve, 2,6...Flowmeter, 3,7
... Differential pressure adjustment valve, 4, 8 ... Flow rate adjustment valve, 9 ...
Mixer, 10... Valve with speed control,
11... Buffer tank, 12... Solenoid valve, 13
... Solenoid valve, 14-1, 14-2 ... Throttle valve, 1
5...Cylinder, 16...Ball valve.
Claims (1)
有する配管の複数を並列してミキサーの入側に接
続し、バツフアタンクの混合ガス圧あるいは入側
の任意のガス圧等を動力源とするスピードコント
ロール付弁を介してバツフアタンクをミキサーの
出側に接続したガス混合装置。1 Connect multiple pipes with pressure reducing valves, flowmeters, differential pressure adjustment valves, and flow rate adjustment valves in parallel to the input side of the mixer, and use the mixed gas pressure of the buffer tank or any gas pressure on the input side as the power source. A gas mixing device in which a buffer tank is connected to the output side of the mixer via a speed control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56152582A JPS5855033A (en) | 1981-09-26 | 1981-09-26 | Gas mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56152582A JPS5855033A (en) | 1981-09-26 | 1981-09-26 | Gas mixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5855033A JPS5855033A (en) | 1983-04-01 |
| JPS6259621B2 true JPS6259621B2 (en) | 1987-12-11 |
Family
ID=15543611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56152582A Granted JPS5855033A (en) | 1981-09-26 | 1981-09-26 | Gas mixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5855033A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9486749B2 (en) | 2011-12-06 | 2016-11-08 | Nissan Tanaka Corporation | Method for producing mixed gas and gas mixing device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0618624B2 (en) * | 1985-03-28 | 1994-03-16 | コスモエンジニアリング株式会社 | Gas mixture transfer method |
| FR2632211A1 (en) * | 1988-06-06 | 1989-12-08 | Sardou Max | Process for producing a gas mixture and device enabling the process to be used |
| CN103223317A (en) * | 2013-04-12 | 2013-07-31 | 苏州亚和保鲜科技有限公司 | Gas proportional mixer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5287889A (en) * | 1975-11-27 | 1977-07-22 | Draegerwerk Ag | Respiration protective* diving* medical and experimental gas mixer |
-
1981
- 1981-09-26 JP JP56152582A patent/JPS5855033A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5287889A (en) * | 1975-11-27 | 1977-07-22 | Draegerwerk Ag | Respiration protective* diving* medical and experimental gas mixer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9486749B2 (en) | 2011-12-06 | 2016-11-08 | Nissan Tanaka Corporation | Method for producing mixed gas and gas mixing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5855033A (en) | 1983-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5950675A (en) | Backflow prevention apparatus for feeding a mixture of gases | |
| US8019481B2 (en) | Flow rate ratio control device | |
| TWI245113B (en) | Differential pressure type flowmeter and differential pressure type flowmeter controller | |
| CN101180527B (en) | Wide range continuous diluter | |
| US3853144A (en) | Flowmeter | |
| US4938256A (en) | Apparatus for the production of particular concentrations of gaseous materials as well as for mixing various gaseous materials in a specified ratio | |
| JP3865813B2 (en) | Fluid mixing device | |
| JPS5944271A (en) | Gas destributor for medical apparatus | |
| US5804695A (en) | Gas dividing method and apparatus | |
| US5245977A (en) | Flow proportioning mixer for gaseous fuel and air and internal combustion engine gas fuel mixer system | |
| JPS6259621B2 (en) | ||
| JPS6285161A (en) | Exhaust gas recycling control device for engine | |
| JP3701065B2 (en) | Heterogeneous fluid mixing device | |
| US2074882A (en) | Proportioning control apparatus and method of controlling the operation thereof | |
| US4023709A (en) | Apparatus for dosing a constant quantity of fluid into an analysis device | |
| GB1094137A (en) | Fluid flow meter | |
| JPS6142326A (en) | Apparatus for continuous proportional mixing of fluid | |
| US3621866A (en) | Fluid-mixing system | |
| US4863691A (en) | Gas-passage change-over apparatus | |
| CN1474244A (en) | Precision gas proportioning device | |
| JPS618127A (en) | Gas blending apparatus | |
| US6074176A (en) | Proportional product injection circuit with two diaphragm valves | |
| JPS61146329A (en) | Mixing device | |
| JP2794366B2 (en) | Flowmeter | |
| JPH08101176A (en) | Gas chromatograph |