JPH08108005A - Deaeration device - Google Patents
Deaeration deviceInfo
- Publication number
- JPH08108005A JPH08108005A JP24903994A JP24903994A JPH08108005A JP H08108005 A JPH08108005 A JP H08108005A JP 24903994 A JP24903994 A JP 24903994A JP 24903994 A JP24903994 A JP 24903994A JP H08108005 A JPH08108005 A JP H08108005A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- pipe
- degassed
- nozzle
- degassing tank
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明に係る脱気装置は、酸素
等の水中の溶存気体を除去し、溶存気体量が少ない水を
得る為に利用する。BACKGROUND OF THE INVENTION The deaerator according to the present invention is used to remove dissolved gas in water such as oxygen and to obtain water having a small amount of dissolved gas.
【０００２】[0002]
【従来の技術】例えば溶存酸素が少ない水は、従来から
次の〜の様な用途 目的で必要とされている。 鋼管等の金属配管の内面が腐食するのを防止し、酸
化鉄が水中に混入する事による所謂赤水の発生を防止す
る。 加温水中に気泡が発生する事を防止し、気泡による
送水不良である、所謂エアーロック現象を防止する。 各種食品の製造に使用し、この食品を長持ちさせ
る。 各種部品の洗浄用水、或はリンス用水として使用す
る。 水に触れる状態で使用される金属部品、装置表面の
腐食を防止する。 超音波洗浄装置の洗浄槽内に貯溜する水として使用
し、超音波エネルギの伝播効率を向上させて、洗浄効率
を向上（洗浄時間の短縮並びに省エネルギ）を図る。2. Description of the Related Art For example, water containing little dissolved oxygen has been conventionally required for the following purposes. It prevents corrosion of the inner surface of metal pipes such as steel pipes, and prevents the generation of so-called red water due to the mixing of iron oxide into water. It is possible to prevent bubbles from being generated in the heated water, and prevent a so-called airlock phenomenon, which is a poor water supply due to the bubbles. It is used in the manufacture of various foods, and this food lasts a long time. Used as cleaning water for various parts or rinse water. Prevents corrosion of metal parts and equipment surfaces used in contact with water. It is used as water stored in the cleaning tank of the ultrasonic cleaning device to improve the propagation efficiency of ultrasonic energy and improve the cleaning efficiency (shortening the cleaning time and saving energy).
【０００３】この様な用途、目的で使用される脱気装置
として従来から、気体分離膜を使用したものが広く使用
されている。気体分離膜を使用した脱気装置の場合、溶
存酸素濃度が極く低い水を得られる反面、高価な気体分
離膜（膜モジュール）を交換する必要がある。又、洗剤
や汚れ（ごみを含む）を含む水の脱気を行えない。As a deaerator used for such purposes and purposes, those using a gas separation membrane have been widely used. In the case of a deaerator using a gas separation membrane, water having an extremely low dissolved oxygen concentration can be obtained, but it is necessary to replace an expensive gas separation membrane (membrane module). Also, water containing detergent and dirt (including dust) cannot be deaerated.
【０００４】一方、気体分離膜が不要で、洗剤や汚れを
含む水の脱気を行える装置として従来から、特開昭６０
−６１０１１号公報、同６１−２６８３０５号公報、特
開平６−７１２３９号公報、実開平２−４５１０４号公
報に記載された脱気装置が知られている。このうちの特
開昭６０−６１０１１号公報、特開平６−７１２３９号
公報、実開平２−４５１０４号公報に記載された脱気装
置は、脱気すべき液体を貯溜した脱気槽内を減圧する事
により、この液体を脱気するものである。又、特開昭６
１−２６８３０５号公報に記載された脱気装置は、加圧
された状態で送られてくる温水をシャワー状にして大気
圧に開放する事により、この温水内の溶存気体を脱気す
るものである。On the other hand, as a device that does not require a gas separation membrane and can deaerate water containing detergent and dirt, it has been known in the prior art that the device is disclosed in Japanese Patent Laid-Open No.
The deaerator described in -61011, the same 61-268305, the Unexamined-Japanese-Patent No. 6-71239, and the utility model 2-45104 is known. Among them, the deaerators described in JP-A-60-61011, JP-A-6-71239, and JP-A-2-45104 depressurize the inside of a deaeration tank storing a liquid to be deaerated. By doing so, the liquid is degassed. Also, JP-A-6
The deaerator described in the 1-268305 publication degasses the dissolved gas in the hot water by opening the hot water sent in a pressurized state into a shower and opening to atmospheric pressure. is there.
【０００５】[0005]
【発明が解決しようとする課題】従来の脱気装置の場
合、１台で溶存気体濃度を極く低濃度にする事は難し
く、溶存気体濃度が極く低濃度の液体を得る為には、複
数台の脱気装置を直列に配置し、一度脱気した液体を更
に脱気処理する必要があった。又、溶存気体濃度を調整
する事も難しかった。即ち、溶存気体濃度の調整は、脱
気槽内の圧力を変える事で調整可能ではあるが、溶存気
体濃度が低い液体を得るべく脱気槽内の圧力を極く低く
すると、この液体の蒸発が促進されて、脱気処理済液体
の回収量が少なくなる（歩留が低下する）。本発明はこ
の様な事情に鑑みて、１台で溶存気体濃度が極く低濃度
の液体を得る事が可能で、しかも溶存気体濃度の調整が
容易な脱気装置を提供すべく発明したものである。In the case of the conventional deaerator, it is difficult to make the dissolved gas concentration extremely low by one unit, and in order to obtain a liquid having an extremely low dissolved gas concentration, It was necessary to arrange a plurality of deaerators in series and further deaerate the liquid once deaerated. It was also difficult to adjust the dissolved gas concentration. In other words, the dissolved gas concentration can be adjusted by changing the pressure in the degassing tank, but if the pressure in the degassing tank is made extremely low to obtain a liquid with a low dissolved gas concentration, the evaporation of this liquid will occur. Is promoted, and the recovery amount of the degassed liquid is reduced (the yield is reduced). In view of such circumstances, the present invention has been invented to provide a deaerator capable of obtaining a liquid having an extremely low dissolved gas concentration with a single unit and easily adjusting the dissolved gas concentration. Is.
【０００６】[0006]
【課題を解決するための手段】本発明の脱気装置は、密
閉された脱気槽と、この脱気槽内の気体を排出する為の
真空ポンプと、脱気すべき液体を供給する為の給液管
と、この給液管の下流端に接続されて上記脱気槽の上部
内側に設けられ、多数の小孔から脱気槽内に脱気すべき
液体を噴出する第一のノズルと、上記脱気槽の底部にそ
の上流端を開口させ、途中に送液ポンプを接続した脱気
処理済液体取り出し管と、この脱気処理済液体取り出し
管の途中で上記送液ポンプよりも下流側部分にその上流
端を接続した還流管と、この還流管の下流端に接続され
て上記脱気槽の上部内側に設けられ、多数の小孔から脱
気槽内に脱気すべき液体を噴出する第二のノズルと、上
記還流管の途中に設けられて、この還流管を流れる液体
の量を調整自在な流量調整弁とを備えている。DISCLOSURE OF THE INVENTION The deaerator of the present invention is a closed deaeration tank, a vacuum pump for discharging the gas in the deaeration tank, and a liquid for deaeration. Liquid supply pipe and a first nozzle connected to the downstream end of the liquid supply pipe, provided inside the upper part of the degassing tank, and ejecting the liquid to be degassed into the degassing tank through a large number of small holes. And a degassed liquid take-out pipe having an upstream end opened at the bottom of the degassing tank and connected with a liquid feed pump in the middle, and the degassing-treated liquid take-out pipe in the middle of A reflux pipe whose upstream end is connected to a downstream portion, and a liquid which is connected to the downstream end of the reflux pipe and is provided inside the upper part of the degassing tank and which is to be degassed from a large number of small holes into the degassing tank. A second nozzle for ejecting the liquid, and a flow that is provided in the middle of the reflux pipe and is capable of adjusting the amount of liquid flowing through the reflux pipe. And a regulating valve.
【０００７】[0007]
【作用】上述の様に構成される本発明の脱気装置によ
り、液体の脱気処理を行う際には、真空ポンプにより脱
気槽内を減圧した状態で、給液管を通じて送り込まれる
液体を、第一のノズルを通じて上記脱気槽内に噴出す
る。脱気槽内は減圧されている為、この脱気槽内に送り
込まれた液体中の溶存気体が脱気される。この様な脱気
処理は、第一のノズルからシャワー状乃至は霧状になっ
て脱気槽内に噴出する事により、上記液体の表面積が増
大している為、効率良く行われる。そして、脱気処理済
液体が脱気槽の底部に溜る。With the degassing apparatus of the present invention configured as described above, when degassing a liquid, the liquid pumped through the liquid supply pipe is used while the degassing tank is depressurized by the vacuum pump. , Through the first nozzle into the degassing tank. Since the degassing tank is depressurized, the dissolved gas in the liquid sent into the degassing tank is degassed. Such a deaeration process is efficiently performed because the surface area of the liquid is increased by ejecting it into the deaeration tank in the form of a shower or a mist from the first nozzle. Then, the degassed liquid collects at the bottom of the degassing tank.
【０００８】この脱気処理済液体は、送液ポンプの運転
に伴って、脱気処理済液体取り出し管を通じて取り出さ
れる。又、上記送液ポンプから脱気処理済液体取り出し
管の下流側に送り出された脱気処理済液体の一部は、還
流管を通じて第二のノズルに送られ、この第二のノズル
から上記脱気槽内に、シャワー状乃至は霧状になって噴
出する。この結果、還流管を通じて脱気槽に戻される脱
気処理済液体が更に脱気処理され、溶存気体濃度が更に
低下する。The degassed liquid is taken out through the degassed liquid take-out pipe with the operation of the liquid feed pump. Further, a part of the degassed liquid sent out from the liquid sending pump to the downstream side of the degassed liquid taking-out pipe is sent to the second nozzle through the reflux pipe, and the degassing process is performed from the second nozzle. It spouts into the air chamber in the form of a shower or mist. As a result, the degassed liquid returned to the degassing tank through the reflux pipe is further degassed, and the dissolved gas concentration is further reduced.
【０００９】脱気槽の底部に溜る脱気処理済液体の溶存
気体濃度は、脱気槽内の圧力の他、給液管を通じて脱気
槽に送り込まれる新たな液体の量と、還流管を通じて脱
気槽に戻される脱気処理済液体の量との割合によって変
化する。即ち、還流管を通じて脱気槽に戻される脱気処
理済液体の割合を多くすれば上記溶存気体濃度が低くな
り、この脱気処理済液体の割合を少なくすれば上記溶存
気体濃度が高くなる。そして、この脱気処理済液体の割
合は、還流管の途中に設けた流量調整弁により調整自在
である。従って、上記脱気処理済液体取り出し管を通じ
て取り出せる脱気処理済液体の溶存気体濃度を容易に調
整できる。The dissolved gas concentration of the degassed liquid accumulated at the bottom of the degassing tank depends on the pressure in the degassing tank, the amount of new liquid sent to the degassing tank through the liquid supply pipe, and the reflux pipe. It changes depending on the ratio with the amount of degassed liquid returned to the degassing tank. That is, if the proportion of the degassed liquid returned to the degassing tank through the reflux pipe is increased, the concentration of the dissolved gas is lowered, and if the proportion of the degassed liquid is reduced, the concentration of the dissolved gas is increased. The proportion of the degassed liquid can be adjusted by a flow rate adjusting valve provided in the middle of the reflux pipe. Therefore, the dissolved gas concentration of the degassed liquid that can be taken out through the degassed liquid take-out pipe can be easily adjusted.
【００１０】[0010]
【実施例】図１は本発明の実施例を示している。脱気槽
１は、ステンレス鋼により有底円筒状に造られており、
蓋板２により上端開口部を密閉されている。この蓋板２
の下面には給排気管３の一端を開口させ、この給排気管
３の他端に吸気管４の下流端と排気管５の上流端とを接
続している。このうちの吸気管４の上流端には除塵フィ
ルタ６を、途中には電動式（電磁式）の開閉弁７を、そ
れぞれ設けている。尚、この吸気管４は、清掃作業等の
為に上記蓋板２を開放する際、上記脱気槽１内に清浄空
気を吸引し、この脱気槽１内を大気圧に戻す為に、或は
脱気作業時に脱気槽１内の圧力を調整する為に利用す
る。従って、脱気装置の運転時には、上記開閉弁７は閉
じたままにしておくか、或は脱気槽１内の圧力調整を目
的として開閉を繰り返す。FIG. 1 shows an embodiment of the present invention. The degassing tank 1 is made of stainless steel in a cylindrical shape with a bottom,
The upper end opening is closed by the lid plate 2. This lid plate 2
One end of the supply / exhaust pipe 3 is opened on the lower surface of the intake pipe 4, and the downstream end of the intake pipe 4 and the upstream end of the exhaust pipe 5 are connected to the other end of the supply / exhaust pipe 3. A dust removing filter 6 is provided at the upstream end of the intake pipe 4, and an electric (electromagnetic) on-off valve 7 is provided in the middle thereof. The intake pipe 4 sucks clean air into the deaeration tank 1 when the cover plate 2 is opened for cleaning work or the like, and returns the atmospheric pressure to the deaeration tank 1. Alternatively, it is used to adjust the pressure in the deaerating tank 1 during deaerating work. Therefore, during the operation of the deaerator, the on-off valve 7 is kept closed or is repeatedly opened and closed for the purpose of adjusting the pressure in the deaerator 1.
【００１１】一方、上記排気管５の下流端には、水封式
の真空ポンプ８を設けている。又、この排気管５の途中
には、上流側から順に、電動式の開閉弁９と逆止弁１０
とを設けている。又、上記真空ポンプ８の給水口には給
水管１１の下流端を接続し、この給水管１１の上流端
を、後述する原水供給管１２の途中に接続している。上
記給水管１１の下流寄り部分には、定流量弁１３を設け
ている。更に、上記真空ポンプ８の排水口には、排水管
１４の上流端を接続している。この排水管１４の下流端
は、下水等の排水設備に通じさせている。On the other hand, a water-sealed vacuum pump 8 is provided at the downstream end of the exhaust pipe 5. In addition, in the middle of the exhaust pipe 5, an electric on-off valve 9 and a check valve 10 are sequentially arranged from the upstream side.
And are provided. Further, a downstream end of a water supply pipe 11 is connected to a water supply port of the vacuum pump 8, and an upstream end of the water supply pipe 11 is connected to a raw water supply pipe 12 which will be described later. A constant flow valve 13 is provided in the downstream portion of the water supply pipe 11. Further, the drain end of the vacuum pump 8 is connected to the upstream end of the drain pipe 14. The downstream end of the drain pipe 14 communicates with drainage equipment such as sewage.
【００１２】脱気すべき液体（図示の実施例の場合には
水）を供給する為の給液管１５は、前記脱気槽１の上部
側面を気密に貫通している。そして、この給液管１５の
上流端に、循環水供給管１６の下流端と上記原水供給管
１２の下流端とを、それぞれ接続している。このうちの
原水供給管１２の上流端は上水道設備或は純水製造装置
等の原水供給源に接続し、循環水供給管１６の上流端
は、脱気処理した水を使用する設備の出口管に接続して
いる。即ち、この循環水供給管１６は、脱気処理した水
（後述する脱気処理済液体２２）を循環使用する際に、
使用に伴って溶存気体濃度が増加した水（脱気すべき液
体）を再処理する際に使用する。尚、これら循環水供給
管１６及び原水供給管１２の途中には、それぞれ上流側
から順に、ストレーナ１７ａ、１７ｂと、流量調整弁１
８ａ、１８ｂと、逆止弁１９ａ、１９ｂとを設けてい
る。上記各流量調整弁１８ａ、１８ｂは、流量調整機能
の他、流路を閉鎖する機能も有する。又、上記給液管１
５の途中には、モータ駆動式の開閉弁２０を設けてい
る。又、上記原水供給管１２の途中で、上記ストレーナ
１７ｂと流量調整弁１８ｂとの間部分には、圧力調整弁
２４を設けている。前記給水管１１の上流端は、この圧
力調整弁２４と上記開閉弁１８ｂとの間部分に接続して
いる。A liquid supply pipe 15 for supplying a liquid to be degassed (water in the illustrated embodiment) penetrates the upper side surface of the degassing tank 1 in an airtight manner. The downstream end of the circulating water supply pipe 16 and the downstream end of the raw water supply pipe 12 are connected to the upstream end of the liquid supply pipe 15. The upstream end of the raw water supply pipe 12 is connected to a raw water supply source such as a water supply facility or a pure water production device, and the upstream end of the circulating water supply pipe 16 is an outlet pipe of a facility that uses degassed water. Connected to. That is, this circulating water supply pipe 16 is used when the degassed water (the degassed liquid 22 described later) is circulated and used.
Used when reprocessing water (liquid to be degassed) whose dissolved gas concentration has increased with use. In addition, in the middle of the circulating water supply pipe 16 and the raw water supply pipe 12, strainers 17a and 17b and the flow rate adjusting valve 1 are sequentially arranged from the upstream side.
8a, 18b and check valves 19a, 19b are provided. Each of the flow rate adjusting valves 18a and 18b has a function of closing the flow path, in addition to the function of adjusting the flow rate. Also, the liquid supply pipe 1
A motor-driven on-off valve 20 is provided in the middle of 5. A pressure adjusting valve 24 is provided in the raw water supply pipe 12 between the strainer 17b and the flow rate adjusting valve 18b. The upstream end of the water supply pipe 11 is connected to a portion between the pressure regulating valve 24 and the opening / closing valve 18b.
【００１３】又、上記給液管１５の下流端で前記脱気槽
１の上部内側部分には、第一のノズル２１を接続してい
る。この第一のノズル２１は、上記給液管１５から送り
込まれる脱気すべき液体を、多数の小孔から上記脱気槽
１内に、シャワー状、好ましくは霧状に噴出する機能を
有する。この第一のノズル２１が液体を噴出する角度
は、上記脱気槽１の内径との関係で設計的に定めるが、
溶存気体濃度をより低くする為には、これら噴出角度及
び脱気槽１の内径を大きくし、噴出した液体の粒径を小
さくする事が好ましい。又、第一のノズル２１と、上記
脱気槽１の底部に溜った脱気処理済液体２２の液面との
距離が大きい方が、溶存気体濃度をより低くする為には
好ましい。A first nozzle 21 is connected to the upper inner portion of the degassing tank 1 at the downstream end of the liquid supply pipe 15. The first nozzle 21 has a function of ejecting the liquid to be degassed fed from the liquid supply pipe 15 into the degassing tank 1 from a large number of small holes in a shower shape, preferably a mist shape. The angle at which the first nozzle 21 ejects the liquid is determined by design in relation to the inner diameter of the degassing tank 1,
In order to lower the dissolved gas concentration, it is preferable to increase the ejection angle and the inner diameter of the degassing tank 1 and reduce the particle size of the ejected liquid. Further, it is preferable that the distance between the first nozzle 21 and the liquid surface of the degassed liquid 22 accumulated at the bottom of the degassing tank 1 is large in order to lower the dissolved gas concentration.
【００１４】一方、上記脱気槽１の底部には、脱気処理
済液体取り出し管２３の上流端を開口させている。そし
てこの脱気処理済液体取り出し管２３の途中に上流側か
ら順に、送液ポンプ２５、２５と逆止弁２６と開閉弁２
７とを設けている。尚、図示の実施例では、２台の送液
ポンプ２５、２５を互いに直列に設けている。これは、
内部が陰圧となった脱気槽１内から取り出した脱気処理
済液体２２を、十分に加圧してから下流側に送り出す為
である。従って、１台で十分に加圧可能なポンプを使用
すれば、送液ポンプ２５は１台で足りる。On the other hand, an upstream end of the degassed liquid take-out pipe 23 is opened at the bottom of the degassing tank 1. Then, in the middle of the degassed liquid take-out pipe 23, the liquid feed pumps 25, 25, the check valve 26, and the opening / closing valve 2 are sequentially arranged from the upstream side.
7 and are provided. In the illustrated embodiment, two liquid feed pumps 25, 25 are provided in series with each other. this is,
This is because the degassed liquid 22 taken out from the degassing tank 1 having a negative pressure inside is sent to the downstream side after being sufficiently pressurized. Therefore, if one pump that can sufficiently pressurize is used, one liquid feed pump 25 will suffice.
【００１５】更に、上記脱気処理済液体取り出し管２３
の途中で、上記送液ポンプ２５、２５と逆止弁２６との
間部分には、還流管２８の上流端を接続している。そし
て、この還流管２８の下流端で前記脱気槽１の上部内側
部分に、第二のノズル２９を接続している。この第二の
ノズル２９に関する設計上の留意点は、前記第一のノズ
ル２１と同様である。尚、第一のノズル２１の容量に余
裕があれば、上記還流管２８の下流端を前記給液管１５
の途中に接続する事で、還流管２８内を流れる液体を第
一のノズル２１から噴出自在とし、上記第二のノズル２
９を省略する事もできる。又、上記還流管２８の途中に
は流量調整弁３０を設けて、この還流管２８を流れる液
体の量を調整自在としている。尚、この流量調整弁３０
も、流量調整機能の他、流路を閉鎖する機能を有する。Further, the degassing-treated liquid take-out pipe 23
In the middle of, the upstream end of the reflux pipe 28 is connected to the portion between the liquid feed pumps 25, 25 and the check valve 26. A second nozzle 29 is connected to the inner portion of the upper portion of the degassing tank 1 at the downstream end of the reflux pipe 28. Design considerations regarding the second nozzle 29 are similar to those of the first nozzle 21. If the capacity of the first nozzle 21 is large, the downstream end of the reflux pipe 28 is connected to the liquid supply pipe 15
The liquid flowing in the reflux pipe 28 can be jetted freely from the first nozzle 21 by connecting it in the middle of the second nozzle 2
9 can be omitted. Further, a flow rate adjusting valve 30 is provided in the middle of the reflux pipe 28 so that the amount of liquid flowing through the reflux pipe 28 can be adjusted. The flow rate adjusting valve 30
Also has a function of closing the flow path in addition to the function of adjusting the flow rate.
【００１６】更に、図示の実施例の場合には、上記脱気
処理済液体取り出し管２３の途中で、上記送液ポンプ２
５、２５よりも上流側部分に、第二の排水管３１の上流
端を接続し、この第二の排水管３１の途中に電動式の開
閉弁３２を設けている。この第二の排水管３１の下流端
は、下水等の排水設備に通じさせている。この第二の排
水管３１は、清掃作業等の為に前記脱気槽１内の液体を
排出する為に利用する。従って、脱気装置の運転時に
は、上記開閉弁３２は閉じたままにしておく。Further, in the case of the illustrated embodiment, the liquid feed pump 2 is provided in the middle of the degassed liquid take-out pipe 23.
The upstream end of the second drainage pipe 31 is connected to the upstream side of 5, 25, and an electric on-off valve 32 is provided in the middle of the second drainage pipe 31. The downstream end of the second drainage pipe 31 communicates with drainage equipment such as sewage. The second drainage pipe 31 is used for discharging the liquid in the degassing tank 1 for cleaning work or the like. Therefore, the opening / closing valve 32 is kept closed during the operation of the deaerator.
【００１７】上述の様に構成される本発明の脱気装置に
より、液体（水）の脱気処理を行う際には、圧力調整弁
２４を開放した状態で前記真空ポンプ８を運転する事に
より、脱気槽１内を減圧する。そして、前記給液管１５
を通じて送り込まれる水を、第一のノズル２１を通じて
上記脱気槽１内に噴出する。この際、前記流量調整弁１
８ａ、１８ｂの一方又は双方を開放すると共に、その開
度を調整する。この結果、上記給液管１５に送り込まれ
る脱気すべき液体は、原水供給源から送り込まれる原水
と、脱気処理した水を使用する設備から送り込まれる水
との一方又は双方になる。脱気処理した水を使用する設
備で水を循環使用する場合も、適宜水道水を送り込ん
で、蒸発等による目減り分を補充する。When the liquid (water) is degassed by the degassing apparatus of the present invention constructed as described above, the vacuum pump 8 is operated with the pressure adjusting valve 24 open. The pressure inside the degassing tank 1 is reduced. Then, the liquid supply pipe 15
The water sent through the above is jetted into the degassing tank 1 through the first nozzle 21. At this time, the flow control valve 1
While opening one or both of 8a and 18b, the opening is adjusted. As a result, the liquid to be degassed sent to the liquid supply pipe 15 becomes one or both of the raw water sent from the raw water supply source and the water sent from the equipment using the degassed water. Even when water is circulated in equipment that uses degassed water, tap water should be sent as appropriate to replenish the loss caused by evaporation.
【００１８】何れにしても、上記給液管１５から上記第
一のノズル２１に送り込まれた水（脱気すべき液体）
は、この第一のノズル２１から細かい水滴となって脱気
槽１内に噴出する。この脱気槽１内は減圧されている
為、この脱気槽１内に送り込まれた水中の溶存気体が脱
気される。この様な脱気処理は、第一のノズル２１から
シャワー状乃至は霧状になって脱気槽１内に噴出する事
で、上記水の表面積が増大している為、効率良く行われ
る。そして、脱気された水が、脱気処理済液体２２とし
て脱気槽１の底部に溜る。In any case, water (liquid to be degassed) sent from the liquid supply pipe 15 to the first nozzle 21.
Is ejected into the deaeration tank 1 as fine water droplets from the first nozzle 21. Since the deaeration tank 1 is depressurized, the dissolved gas in the water sent into the deaeration tank 1 is deaerated. Such a deaeration process is efficiently performed because the surface area of the water is increased by ejecting it into the deaeration tank 1 in the form of a shower or a mist from the first nozzle 21. Then, the degassed water is accumulated at the bottom of the degassing tank 1 as the degassed liquid 22.
【００１９】この様に脱気処理を行う際、脱気槽１の中
間部内面に設けたレベルスイッチ３３で上記脱気処理済
液体２２の液面を監視し、上記流量調整弁１８ａ、１８
ｂの開度を調整して、液面位置を一定に保つ。これは、
上記第一のノズル２１と液面との距離が、脱気性能に影
響を及ぼす為である。即ち、第一のノズル２１から減圧
された脱気槽１内に噴出した微小な水滴中の溶存気体
は、圧力低下による溶解度低下に伴って水滴表面から脱
気槽１内に抜け出る。但し、水滴中心部の溶存気体が抜
け出るまでには或る程度時間を要する為、第一のノズル
２１から噴出した水滴が上記液面に達するまでの時間を
確保すべく、上記距離を或る程度大きくする必要があ
る。そこで、上記レベルスイッチ３３により液面を調整
して、この液面が上昇し過ぎる事で、上記距離が短くな
り過ぎるのを防止する。When performing the degassing process in this way, the level switch 33 provided on the inner surface of the intermediate portion of the degassing tank 1 monitors the liquid level of the degassed liquid 22, and the flow rate adjusting valves 18a, 18 are provided.
Adjust the opening of b to keep the liquid surface position constant. this is,
This is because the distance between the first nozzle 21 and the liquid surface affects the degassing performance. That is, the dissolved gas in the minute water droplets jetted from the first nozzle 21 into the deaeration tank 1 whose pressure has been reduced escapes from the surface of the water droplet into the deaeration tank 1 as the solubility decreases due to the pressure decrease. However, since it takes a certain amount of time for the dissolved gas in the central portion of the water droplet to escape, the above distance is set to a certain degree in order to secure the time for the water droplets ejected from the first nozzle 21 to reach the liquid surface. Need to be bigger. Therefore, the liquid level is adjusted by the level switch 33, and the liquid level is prevented from rising too much to prevent the distance from becoming too short.
【００２０】上述の様にして脱気槽１の底部に溜められ
た脱気処理済液体２２は、送液ポンプ２５、２５の運転
に伴って、脱気処理済液体取り出し管２３を通じて取り
出される。又、上記送液ポンプ２５、２５から脱気処理
済液体取り出し管２３の下流側に送り出された脱気処理
済液体２２の一部は、前記還流管２８を通じて第二のノ
ズル２９に送られ、この第二のノズル２９から上記脱気
槽１内に、シャワー状乃至は霧状になって噴出する。こ
の結果、還流管２８を通じて脱気槽１に戻される脱気処
理済液体２２が更に脱気処理され、脱気槽１の底部に溜
められた脱気処理済液体２２の溶存気体濃度が更に低下
する。The degassed liquid 22 stored in the bottom of the degassing tank 1 as described above is taken out through the degassing liquid taking-out pipe 23 as the liquid feed pumps 25, 25 are operated. Further, a part of the degassed liquid 22 sent from the liquid sending pumps 25, 25 to the downstream side of the degassed liquid take-out pipe 23 is sent to the second nozzle 29 through the reflux pipe 28. From the second nozzle 29, it is ejected into the deaeration tank 1 in the form of a shower or a mist. As a result, the degassed liquid 22 returned to the degassing tank 1 through the reflux pipe 28 is further degassed, and the dissolved gas concentration of the degassed liquid 22 stored at the bottom of the degassing tank 1 further decreases. To do.
【００２１】脱気槽１の底部に溜る脱気処理済液体２２
の溶存気体濃度は、脱気槽１内の圧力の他、給液管１５
を通じて脱気槽１に送り込まれる新たな脱気すべき液体
（水）の量と、還流管２８を通じて脱気槽１に戻される
脱気処理済液体２２の量との割合によって変化する。即
ち、還流管２８を通じて脱気槽１に戻される脱気処理済
液体２２の割合を多くすれば上記溶存気体濃度が低くな
り、この脱気処理済液体２２の割合を少なくすれば上記
溶存気体濃度が高くなる。そして、この脱気処理済液体
２２の割合は、上記還流管２８の途中に設けた流量調整
弁３０により調整自在である。従って、上記脱気処理済
液体取り出し管２３を通じて取り出せる脱気処理済液体
２２の溶存気体濃度を容易に調整できる。Degassed liquid 22 accumulated at the bottom of the degassing tank 1.
In addition to the pressure in the degassing tank 1, the dissolved gas concentration of
It changes depending on the ratio between the amount of new liquid (water) to be degassed sent to the degassing tank 1 through the degassing tank 1 and the amount of the degassed liquid 22 returned to the degassing tank 1 through the reflux pipe 28. That is, if the ratio of the degassed liquid 22 returned to the degassing tank 1 through the reflux pipe 28 is increased, the concentration of the dissolved gas is lowered, and if the ratio of the degassed liquid 22 is reduced, the concentration of the dissolved gas is decreased. Becomes higher. The ratio of the degassed liquid 22 can be adjusted by a flow rate adjusting valve 30 provided in the middle of the reflux pipe 28. Therefore, the dissolved gas concentration of the degassed liquid 22 that can be taken out through the degassed liquid take-out pipe 23 can be easily adjusted.
【００２２】更に、特に溶存気体濃度を低くする必要が
ある場合には、上記脱気処理済液体取り出し管２３に設
けた開閉弁２７を閉じ、上記送液ポンプ２５、２５から
吐出される脱気処理済液体２２を、総て脱気槽１に戻
す。そして、この状態で所定時間運転を継続した後、上
記開閉弁２７を開放して、上記脱気処理済液体２２を取
り出す。この際、上記給液管１５を通じての給水は、蒸
発に基づく減少分のみとする。Further, especially when it is necessary to reduce the concentration of dissolved gas, the on-off valve 27 provided in the degassed liquid take-out pipe 23 is closed and the degassing discharged from the liquid feeding pumps 25, 25. All the treated liquid 22 is returned to the degassing tank 1. Then, after continuing the operation for a predetermined time in this state, the on-off valve 27 is opened and the degassed liquid 22 is taken out. At this time, the amount of water supplied through the liquid supply pipe 15 is limited to the amount reduced by evaporation.
【００２３】[0023]
【発明の効果】本発明の脱気装置は、以上に述べた通り
構成され作用するので、１台で溶存気体濃度が極く低濃
度の液体を得る事が可能で、しかも溶存気体濃度の調整
が容易である。この為、所望の溶存気体濃度を有する液
体を容易に得られる。Since the deaerator of the present invention is constructed and operates as described above, it is possible to obtain a liquid having an extremely low dissolved gas concentration with one unit, and to adjust the dissolved gas concentration. Is easy. Therefore, a liquid having a desired dissolved gas concentration can be easily obtained.
【図１】本発明の実施例を示す回路図。FIG. 1 is a circuit diagram showing an embodiment of the present invention.
１ 脱気槽 ２ 蓋板 ３ 給排気管 ４ 吸気管 ５ 排気管 ６ 除塵フィルタ ７ 開閉弁 ８ 真空ポンプ ９ 開閉弁 １０ 逆止弁 １１ 給水管 １２ 原水供給管 １３ 定流量弁 １４ 排水管 １５ 給液管 １６ 循環水供給管 １７ａ、１７ｂ ストレーナ １８ａ、１８ｂ 流量調整弁 １９ａ、１９ｂ 逆止弁 ２０ 開閉弁 ２１ 第一のノズル ２２ 脱気処理済液体 ２３ 脱気処理済液体取り出し管 ２４ 圧力調整弁 ２５ 送液ポンプ ２６ 逆止弁 ２７ 開閉弁 ２８ 還流管 ２９ 第二のノズル ３０ 流量調整弁 ３１ 第二の排水管 ３２ 開閉弁 ３３ レベルスイッチ 1 Deaeration tank 2 Cover plate 3 Supply / exhaust pipe 4 Intake pipe 5 Exhaust pipe 6 Dust filter 7 Open / close valve 8 Vacuum pump 9 Open / close valve 10 Check valve 11 Water supply pipe 12 Raw water supply pipe 13 Constant flow valve 14 Drain pipe 15 Liquid supply Pipe 16 Circulating water supply pipe 17a, 17b Strainer 18a, 18b Flow rate adjusting valve 19a, 19b Check valve 20 Open / close valve 21 First nozzle 22 Degassed liquid 23 Degassing liquid take-out pipe 24 Pressure adjusting valve 25 Sending Liquid pump 26 Check valve 27 Open / close valve 28 Reflux pipe 29 Second nozzle 30 Flow rate adjusting valve 31 Second drainage pipe 32 Open / close valve 33 Level switch
Claims (2)
体を排出する為の真空ポンプと、脱気すべき液体を供給
する為の給液管と、この給液管の下流端に接続されて上
記脱気槽の上部内側に設けられ、多数の小孔から脱気槽
内に脱気すべき液体を噴出する第一のノズルと、上記脱
気槽の底部にその上流端を開口させ、途中に送液ポンプ
を接続した脱気処理済液体取り出し管と、この脱気処理
済液体取り出し管の途中で上記送液ポンプよりも下流側
部分にその上流端を接続した還流管と、この還流管の下
流端に接続されて上記脱気槽の上部内側に設けられ、多
数の小孔から脱気槽内に脱気すべき液体を噴出する第二
のノズルと、上記還流管の途中に設けられて、この還流
管を流れる液体の量を調整自在な流量調整弁とを備えた
脱気装置。1. A sealed degassing tank, a vacuum pump for discharging gas in the degassing tank, a liquid supply pipe for supplying a liquid to be degassed, and a downstream of the liquid supply pipe. A first nozzle connected to the end and provided inside the upper part of the degassing tank, for ejecting the liquid to be degassed into the degassing tank through a large number of small holes, and an upstream end of the nozzle at the bottom of the degassing tank And a degassing-treated liquid take-out pipe connected with a liquid feed pump in the middle, and a reflux pipe having its upstream end connected to a part downstream of the liquid feed pump in the middle of the degassing-treated liquid take-out pipe. A second nozzle connected to the downstream end of the reflux pipe, provided inside the upper part of the degassing tank, for ejecting the liquid to be degassed into the degassing tank through a large number of small holes, and the reflux pipe. A deaerator equipped with a flow rate adjusting valve which is provided in the middle of the flow path and is capable of adjusting the amount of liquid flowing through the reflux pipe.
る事で、還流管内を流れる液体を第一のノズルから噴出
自在とし、第二のノズルを省略した、請求項１に記載し
た脱気装置。2. The method according to claim 1, wherein by connecting the downstream end of the reflux pipe to the middle of the liquid supply pipe, the liquid flowing in the reflux pipe can be jetted freely from the first nozzle, and the second nozzle is omitted. Degassing equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24903994A JPH08108005A (en) | 1994-10-14 | 1994-10-14 | Deaeration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24903994A JPH08108005A (en) | 1994-10-14 | 1994-10-14 | Deaeration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08108005A true JPH08108005A (en) | 1996-04-30 |
Family
ID=17187099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24903994A Pending JPH08108005A (en) | 1994-10-14 | 1994-10-14 | Deaeration device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08108005A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100452396B1 (en) * | 2002-05-24 | 2004-10-12 | 김광학 | Degassing system |
| JP2007216122A (en) * | 2006-02-15 | 2007-08-30 | E's Inc | Degassing apparatus |
| JP2007313413A (en) * | 2006-05-25 | 2007-12-06 | Miura Co Ltd | Deoxidation apparatus |
| KR100925564B1 (en) * | 2008-05-30 | 2009-11-05 | 삼성중공업 주식회사 | Apparatus For Removing Bubbles of Liquid Polymeric Material |
| JP2018079446A (en) * | 2016-11-18 | 2018-05-24 | 三菱重工機械システム株式会社 | Liquid mixer, and liquid mixing method |
| JP2019093346A (en) * | 2017-11-24 | 2019-06-20 | 株式会社Tosei | Cleaning equipment and method for control thereof |
-
1994
- 1994-10-14 JP JP24903994A patent/JPH08108005A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100452396B1 (en) * | 2002-05-24 | 2004-10-12 | 김광학 | Degassing system |
| JP2007216122A (en) * | 2006-02-15 | 2007-08-30 | E's Inc | Degassing apparatus |
| JP4714597B2 (en) * | 2006-02-15 | 2011-06-29 | 株式会社イーズ | Deaerator |
| JP2007313413A (en) * | 2006-05-25 | 2007-12-06 | Miura Co Ltd | Deoxidation apparatus |
| KR100925564B1 (en) * | 2008-05-30 | 2009-11-05 | 삼성중공업 주식회사 | Apparatus For Removing Bubbles of Liquid Polymeric Material |
| JP2018079446A (en) * | 2016-11-18 | 2018-05-24 | 三菱重工機械システム株式会社 | Liquid mixer, and liquid mixing method |
| JP2019093346A (en) * | 2017-11-24 | 2019-06-20 | 株式会社Tosei | Cleaning equipment and method for control thereof |
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