JPH07195063A - Deaeration device for removing underwater dissolved oxygen - Google Patents
Deaeration device for removing underwater dissolved oxygenInfo
- Publication number
- JPH07195063A JPH07195063A JP14007294A JP14007294A JPH07195063A JP H07195063 A JPH07195063 A JP H07195063A JP 14007294 A JP14007294 A JP 14007294A JP 14007294 A JP14007294 A JP 14007294A JP H07195063 A JPH07195063 A JP H07195063A
- Authority
- JP
- Japan
- Prior art keywords
- water
- tank
- state
- deaeration
- degassing
- 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.)
- Granted
Links
Landscapes
- Degasification And Air Bubble Elimination (AREA)
- Physical Water Treatments (AREA)
- Removal Of Specific Substances (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水槽に貯水されている
水道水から溶存酸素を脱気する脱気装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deaerator for deaerating dissolved oxygen from tap water stored in a water tank.
【０００２】[0002]
【従来の技術】一般のビルや集合住宅などで問題となっ
ている水道配管の詰まりや水道水の汚濁などの原因とな
っている配管内面の錆の発生は、種々の要因が考えられ
るが、特に水道水中の溶存酸素が最も大きく影響する。
例えば、溶存酸素を１／２に低下させると、同じ錆の量
が成長するのに要する時間は、略２倍となる。換言すれ
ば溶存酸素と錆の成長は略比例する。従って、この溶存
酸素を除去すれば、錆の発生や成長を大きく抑制するこ
とができる。2. Description of the Related Art There are various factors that can cause rusting on the inner surface of pipes, which is a cause of clogging of water pipes and pollution of tap water, which is a problem in general buildings and apartments. In particular, dissolved oxygen in tap water has the greatest effect.
For example, if the dissolved oxygen is reduced to 1/2, the time required for the same amount of rust to grow grows approximately twice. In other words, the growth of dissolved oxygen and rust are approximately proportional. Therefore, if this dissolved oxygen is removed, the generation and growth of rust can be greatly suppressed.
【０００３】しかるに、一般のビルや集合住宅などで
は、溶存酸素の除去による錆の発生の防止、または抑制
というような方法は採られず、発生してしまった錆を除
去する煩雑な清掃が定期的あるいは必要に応じて行われ
ているのが実情である。However, in a general building or an apartment house, a method of preventing or suppressing the generation of rust by removing dissolved oxygen is not adopted, and a complicated cleaning for removing the generated rust is regularly performed. The reality is that they are being carried out as needed or as needed.
【０００４】ところで、水中から溶存酸素を脱気する装
置としては、エゼクタを利用した真空脱気装置や、真空
ポンプと膜を利用した脱気装置がある。しかしこれらの
脱気装置は、大掛かりな装置であること、またその管理
に比較的高い技術を要するし、運転に多大の電力を消費
しコスト高となることなどから、一般のビルや集合住宅
などに設置することは困難である。By the way, as a device for degassing dissolved oxygen from water, there are a vacuum degassing device using an ejector and a degassing device using a vacuum pump and a membrane. However, these deaerators are large-scale devices, require relatively high technology to manage them, and consume a lot of power to operate, resulting in high costs. It is difficult to install in.
【０００５】[0005]
【発明が解決しようとする課題】本発明はこのような事
情を背景になされたもので、構成が簡単で設置や管理が
し易い、つまり簡易な構造であり、またメンテナンスの
面倒が少なく、しかも消費電力なども少なくて済むよう
な脱気装置の提供を目的としている。The present invention has been made in view of such circumstances, and has a simple structure and is easy to install and manage, that is, has a simple structure, and has less troublesome maintenance. The purpose is to provide a deaerator that consumes less power.
【０００６】[0006]
【課題を解決するための手段】本発明による水中溶存酸
素の脱気装置は、水槽に貯水されている水道水から溶存
酸素を除去するためのもので、気密状態の脱気槽、水槽
からの処理対象水を脱気槽の上部より脱気槽内に噴霧状
態で給水する給水ノズル、脱気槽内から処理対象水を排
水して水槽に循環させるための循環管路、脱気槽内の気
体を外部に排出するために脱気槽内面の上端部に形成さ
れた集気凹部に一端を臨ませた排気管路、及び給水速度
より速い速度で排水するか又は十分に給水した後に給水
を停止した状態で排水するような制御と排水を停止した
状態で給水するか又は排水速度より速い速度で給水する
ような制御とを行えるようにした給・排水制御手段を備
えてなっている。DISCLOSURE OF THE INVENTION The deaerator for dissolved oxygen in water according to the present invention is for removing dissolved oxygen from tap water stored in a water tank. A water supply nozzle that feeds the water to be treated from the top of the degassing tank into the degassing tank in a spray state, a circulation pipe for draining the water to be treated from the degassing tank and circulating it in the water tank, and a degassing tank In order to discharge the gas to the outside, the exhaust pipe line whose one end faces the air collecting recess formed in the upper end of the inner surface of the degassing tank, and the water is drained at a speed faster than the water supply speed or water is supplied after sufficient water supply. There is provided a water supply / drainage control means capable of performing control such that water is drained in a stopped state and control such that water is supplied in a state in which drainage is stopped or water is supplied at a speed faster than the drainage speed.
【０００７】[0007]
【作用】本発明による脱気装置は、脱気槽に対する給水
と排水の関係乃至バランスの調節により、脱気槽内を減
圧状態にして処理対象水からの脱気を行なうと共に、脱
気した気体の排出を行なうようにし、且つこの処理を水
槽内の処理対象水に循環的に繰り返すことにより水槽内
の処理対象水全体に効率的な脱気処理を施すものであ
る。また、このような脱気処理をより一層効率的なもの
とするために、処理対象水を噴霧状態で給水するように
している。それ故に、駆動系としては処理対象水の循環
を行なわせるためのポンプだけで済ませることが可能と
なり、故障要素、特に減圧用ポンプのように故障し易い
要素を用いなくともよい。この結果、長期間の連続運転
を安定的に行なえるし、またその分装置全体のコンパク
ト化を図れ、特にビルなどの高架水槽や受水槽のように
空間的な制約を受ける場所への設置が容易となり、さら
に消費電力の節約にもつながる。In the deaerator according to the present invention, the inside of the deaerator is depressurized by adjusting the relationship between water supply and drainage to the deaerator or the balance, and the degassed gas is degassed. Is performed, and this treatment is cyclically repeated for the water to be treated in the water tank, so that the entire water to be treated in the water tank is efficiently degassed. Further, in order to make such degassing treatment more efficient, the water to be treated is supplied in a spray state. Therefore, it is possible to use only a pump for circulating the water to be treated as a drive system, and it is not necessary to use a failure element, particularly an element that is likely to fail such as a decompression pump. As a result, long-term continuous operation can be performed stably, and the entire device can be made compact accordingly, and it can be installed especially in places such as elevated water tanks and water receiving tanks where space is restricted. It will be easier and will lead to a reduction in power consumption.
【０００８】[0008]
【実施例】以下、本発明の実施例を図に基づいて説明す
る。第１図において、１はビルの屋上などに設置した
「水槽」としての高架水槽であり、本実施例では脱気槽
２は高架水槽１内の底部に設置されている。脱気槽２
は、高架水槽１内の処理対象水をその内部に噴霧状態で
給水する給水ノズル３を備えている。また脱気槽２内の
上部には円錐形状の集気凹部１２が形成され、この集気
凹部１２に脱気槽２の底部を貫通して立ち上げた排気管
１１の一端が臨まされている。集気凹部１２は、その円
錐形状のような先窄まり状の形状により、後述のように
して脱気槽２内の排気を行なうについて、排気管１１の
取入れ口に気体をスムースに集める役目を果たしてい
る。この結果、気体の排出がより効率的になされ、一端
脱気された気体の処理対象水への溶解をできるだけ少な
くすることができる。さらに脱気槽２は、その内部の水
位を感知するための水位感知用センサ９を備えており、
後述するポンプ５を運転するマグネットスイッチ１３と
接続されている。尚、排気管１１は、真空計７及び逆止
弁８を備えており、その他端は大気中に開放されてい
る。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 is an elevated water tank as a “water tank” installed on the roof of a building or the like, and in this embodiment, the deaeration tank 2 is installed at the bottom of the elevated water tank 1. Degassing tank 2
Is provided with a water supply nozzle 3 for supplying the water to be treated in the elevated water tank 1 in a spray state. Further, a conical air-collecting recess 12 is formed in the upper portion of the degassing tank 2, and one end of an exhaust pipe 11 that is erected through the bottom of the degassing tank 2 is exposed to the air-collecting recess 12. . Due to the conical shape such as the conical shape, the air collecting concave portion 12 has a function of smoothly collecting gas in the intake port of the exhaust pipe 11 when exhausting the inside of the degassing tank 2 as described later. Is playing. As a result, the gas is discharged more efficiently, and the gas once degassed can be dissolved as little as possible in the water to be treated. Further, the degassing tank 2 is equipped with a water level sensing sensor 9 for sensing the water level inside thereof.
It is connected to a magnet switch 13 for driving the pump 5 described later. The exhaust pipe 11 is equipped with a vacuum gauge 7 and a check valve 8, and the other end is open to the atmosphere.
【０００９】降水管４はポンプ５と脱気槽２を連通する
配管であり、また、還水管６はポンプ５で排出した水を
高架水槽１に還流させるための配管であり、これらの降
水管４、ポンプ５、および還水管６とにより循環管路Ｐ
が構成されている。The downcomer pipe 4 is a pipe for connecting the pump 5 and the deaeration tank 2, and the return water pipe 6 is a pipe for returning the water discharged by the pump 5 to the elevated water tank 1. 4, the pump 5, and the return water pipe 6 together with the circulation line P
Is configured.
【００１０】さて、本装置の使用にあっては、脱気槽２
に流入する水量とポンプ５により排出する水量の関係を
調節することで脱気が行なわれる。具体的には、先ず給
水ノズル３からの流入水量をポンプ５による排水量より
少なく調整をしておくか、又は十分につまり給水ノズル
３に水位が近接する状態にまで給水した状態で給水を停
止し、それからポンプ５を作動させて排水を行なうよう
にする。この結果、脱気槽２の内部に減圧状態が形成さ
れ、水中の溶存酸素はヘンリーの法則によりガス体とな
って脱気槽２の上部に分離される。それから、排水を停
止した状態で給水するか、又は排水速度より速く給水を
行なう。すると脱気槽２の内部に再び処理対象水が充満
して行き、これに伴って脱気槽２の内部の気体が排気管
１１を介して強制的に外部へ排出する。このようにして
脱気気処を受けた水は、ポンプ５による脱気槽２内から
の排出に伴って還水管６を経由して高架水槽１に還流さ
れる。尚、以上のような給・排水のバランス的制御は図
示せぬコントロールボックスに設けられている制御手段
によりなされるものである。Now, in using this apparatus, the degassing tank 2
Degassing is performed by adjusting the relationship between the amount of water flowing into the tank and the amount of water discharged by the pump 5. Specifically, first, the inflow water amount from the water supply nozzle 3 is adjusted to be smaller than the drainage amount by the pump 5, or the water supply is stopped in a state where the water level is sufficiently close to the water supply nozzle 3. Then, the pump 5 is activated to drain the water. As a result, a decompressed state is formed inside the degassing tank 2, and dissolved oxygen in water becomes a gas body according to Henry's law and is separated into the upper part of the degassing tank 2. Then, water is supplied with the drainage stopped, or water is supplied at a speed faster than the drainage speed. Then, the water to be treated again fills the degassing tank 2 and the gas inside the degassing tank 2 is forcibly discharged to the outside through the exhaust pipe 11. The water thus deaerated is returned to the elevated water tank 1 via the return water pipe 6 as the water is discharged from the deaeration tank 2 by the pump 5. The balanced control of water supply and drainage as described above is performed by the control means provided in a control box (not shown).
【００１１】以上の動作は連続的に繰り返され、これに
応じて高架水槽１の水Ｌは順次脱気処理水と置換され、
溶存酸素の少ない水となって行き、この結果、給水管で
の錆の発生を抑制することができる。The above operation is continuously repeated, and in response to this, the water L in the elevated water tank 1 is sequentially replaced with degassed water,
The water becomes less dissolved oxygen, and as a result, it is possible to suppress the generation of rust in the water supply pipe.
【００１２】ここで、真空計７は、脱気槽２内の減圧度
を視認可能とするものであり、また、ポンプ５をこの真
空計７と連動させて稼働させることにより、脱気槽２内
の減圧度を一定状態に保つのに使用できる。また、高架
水槽１内の水位が給水ノズル３よりも低下して給水ノズ
ル３より空気が脱気槽２内に流入した場合、脱気槽２内
の水位が予め高さを設定した水位感知センサ９の位置ま
で低下すると、水位感知センサ９がその水位を感知して
マグネットスイッチ１３を作動させポンプ５の電源を遮
断し、ポンプ５を停止させ空運転による破損を未然に防
止する。Here, the vacuum gauge 7 makes it possible to visually check the degree of pressure reduction in the degassing tank 2, and by operating the pump 5 in conjunction with the vacuum gauge 7, the degassing tank 2 is operated. It can be used to maintain a constant degree of vacuum. Further, when the water level in the elevated water tank 1 is lower than that in the water supply nozzle 3 and air flows into the deaeration tank 2 from the water supply nozzle 3, a water level detection sensor in which the water level in the deaeration tank 2 is set to a predetermined height When the water level sensor 9 detects the water level, it operates the magnet switch 13 to shut off the power source of the pump 5 to stop the pump 5 and prevent the damage due to the idle operation.
【００１３】以上の実施例は高架水槽内に脱気槽を設置
した例であったが、本発明による装置は、受水槽にも同
様にして用い得ることができるし、また脱気槽を水槽の
外部に設置する構造とすることも必要に応じて可能であ
る。Although the above embodiment is an example in which the deaeration tank is installed in the elevated water tank, the apparatus according to the present invention can be used in the same manner as the water receiving tank, and the deaeration tank is a water tank. It is also possible to adopt a structure to be installed outside the vehicle, if necessary.
【００１４】[0014]
【発明の効果】以上説明した如く本発明による脱気装置
は、減圧用の真空ポンプのように故障し易い要素を用い
なくとも済むので長期間の連続運転を安定的に行なえ、
またその分装置全体がコンパクト化して特にビルなどの
高架水槽や受水槽のように空間的な制約を受ける場所へ
の設置が容易であり、さらに消費電力の節約も図ること
ができるという効果を有する。As described above, the deaerator according to the present invention does not need to use an element that is liable to malfunction like a vacuum pump for depressurization, and therefore can be stably operated for a long period of time.
In addition, the entire device can be made compact by that much, so that it can be easily installed especially in a space-restricted place such as an elevated water tank or a water receiving tank such as a building, and power consumption can be saved. .
【図１】本発明による水中溶存酸素の脱気装置の構成
図。FIG. 1 is a block diagram of a deaerator for dissolved oxygen in water according to the present invention.
１ 高架水槽（水槽） ２ 脱気槽 ３ 給水ノズル ４ 降水管 ５ ポンプ ６ 還水管 １１ 排気管 １２ 集気凹部 Ｐ 循環管路 1 Elevated water tank (water tank) 2 Degassing tank 3 Water supply nozzle 4 Precipitation pipe 5 Pump 6 Return water pipe 11 Exhaust pipe 12 Air intake recess P Circulation pipeline
Claims (1)
素を除去するための脱気装置であって、気密状態の脱気
槽、脱気槽の上部より脱気槽内に処理対象水を噴霧状態
で給水する給水ノズル、脱気槽内から処理対象水を排水
して水槽に循環させるための循環管路、脱気槽内の気体
を外部に排出するために脱気槽内面の上端部に形成され
た集気凹部に一端を臨ませた排気管路、及び給水速度よ
り速い速度で排水するか又は十分に給水した後に給水を
停止した状態で排水するような制御と排水を停止した状
態で給水するか又は排水速度より速い速度で給水するよ
うな制御とを行えるようにした給・排水制御手段を備え
ていることを特徴とする水中溶存空気の脱気装置。1. A degassing device for removing dissolved oxygen from tap water stored in a water tank, wherein degassing tank in an airtight state, and water to be treated is introduced into the degassing tank from above the degassing tank. A water supply nozzle that supplies water in a spray state, a circulation conduit for draining the water to be treated from the degassing tank and circulating it in the water tank, an upper end of the degassing tank inner surface for discharging the gas in the degassing tank to the outside Exhaust pipe with one end facing the air intake recess formed in the section, and drainage at a speed faster than the water supply rate, or control such that drainage was performed after the water was sufficiently supplied and then stopped A deaerator for dissolved air in water, comprising a water supply / drainage control means capable of performing water supply at a state or water supply at a speed faster than the water discharge speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6140072A JP3006997B2 (en) | 1994-06-22 | 1994-06-22 | Deaerator for dissolved oxygen in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6140072A JP3006997B2 (en) | 1994-06-22 | 1994-06-22 | Deaerator for dissolved oxygen in water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07195063A true JPH07195063A (en) | 1995-08-01 |
| JP3006997B2 JP3006997B2 (en) | 2000-02-07 |
Family
ID=15260324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6140072A Expired - Lifetime JP3006997B2 (en) | 1994-06-22 | 1994-06-22 | Deaerator for dissolved oxygen in water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3006997B2 (en) |
-
1994
- 1994-06-22 JP JP6140072A patent/JP3006997B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP3006997B2 (en) | 2000-02-07 |
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