JP2000240600A - Vacuum liquid pumping device - Google Patents
Vacuum liquid pumping deviceInfo
- Publication number
- JP2000240600A JP2000240600A JP11042151A JP4215199A JP2000240600A JP 2000240600 A JP2000240600 A JP 2000240600A JP 11042151 A JP11042151 A JP 11042151A JP 4215199 A JP4215199 A JP 4215199A JP 2000240600 A JP2000240600 A JP 2000240600A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- gas
- pipe
- pumping
- supply pipe
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 144
- 238000005086 pumping Methods 0.000 title claims description 88
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 230000000630 rising effect Effects 0.000 claims description 7
- 230000006837 decompression Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 64
- 239000002893 slag Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000220317 Rosa Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、低位にある液体
を真空ポンプなどの減圧装置を利用して高位に吸い上げ
る揚液装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid pumping device for pumping a liquid at a low level to a high level by using a pressure reducing device such as a vacuum pump.
【０００２】[0002]
【従来の技術】水などの液体を汲み上げるためのシステ
ムでは、従来より簡易な真空ポンプが広く用いられてい
る。図４に示すように、例えば地下などに溜まった水３
０を真空ポンプ１４で汲み上げる場合、真空ポンプ１４
に連通された揚液管５０の吸引口を地下の水中に挿入し
て、真空ポンプ１４を駆動する。これにより揚液管５０
の吸引口から吸い上げられた水３０が、地上に設置した
タンク１６などに汲み上げられる。2. Description of the Related Art In a system for pumping a liquid such as water, a simple vacuum pump has been widely used. As shown in FIG.
0 is pumped by the vacuum pump 14,
Is inserted into the underground water, and the vacuum pump 14 is driven. This allows the pump 50
The water 30 sucked up from the suction port is pumped to the tank 16 installed on the ground.
【０００３】[0003]
【発明が解決しようとする課題】しかし、真空ポンプ１
４を用いた場合、汲み上げ可能な揚程Ｈｄは、水の場合
に約１０ｍが限界である。真空ポンプ１４によって吸揚
管５０内を完全に真空にできたとしても、大気圧下（標
準大気圧：７６０ｍｍＨｇ＝１０１３．２５ｈＰａ≒１
０．３３ｔｆ／ｍ2）において、水面Ｈ０から真空揚液
管内に押し上げられる水柱の高さＨｃが約１０ｍだから
である。従って、揚程Ｈｄが１０ｍ以上となる場合に
は、真空ポンプ１４だけで揚液を行うことはできない。
このため、１０ｍを超える深所から液体を汲み上げる場
合には、吸引部付近の深所に渦巻きポンプや往復ポン
プ、ジェットポンプなどを設置して液体を汲み上げる必
要があり、装置が大がかりになり、また高価な装置が必
要となるという問題があった。However, the vacuum pump 1
When using No. 4, the pumpable head Hd is limited to about 10 m in the case of water. Even if the inside of the suction tube 50 can be completely evacuated by the vacuum pump 14, even under the atmospheric pressure (standard atmospheric pressure: 760 mmHg = 1013.25 hPaｈ1)
At 0.33 tf / m 2 ), the height Hc of the water column pushed up from the water surface H0 into the vacuum pumping tube is about 10 m. Therefore, when the head Hd is 10 m or more, the liquid cannot be pumped by the vacuum pump 14 alone.
For this reason, when pumping liquid from a depth exceeding 10 m, it is necessary to install a vortex pump, a reciprocating pump, a jet pump, etc. in the depth near the suction part to pump the liquid. There is a problem that an expensive device is required.
【０００４】上記課題を解決するために、本発明は真空
ポンプのような減圧手段を用いて長い揚程の揚液を可能
とする揚液装置を実現することを目的とする。[0004] In order to solve the above-mentioned problems, an object of the present invention is to realize a liquid pumping apparatus which enables liquid pumping with a long head using a pressure reducing means such as a vacuum pump.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に本発明は、以下のような特徴を有する。To achieve the above object, the present invention has the following features.
【０００６】まず、本発明は、低位にある液体源から、
該液体源中に吸引口が挿入された揚液管を介し、高位に
向けて液体を汲み上げる装置であり、前記揚液管内を減
圧する減圧手段と、前記液体源の液面より高くかつ減圧
下の揚液管内での液体柱自然高さより低い位置において
前記揚液管内へ正圧のガスを間欠的に導入するガス導入
手段と、を備える。そして、前記揚液管内に導入したガ
スにより前記揚液管内の液体柱を分断し、前記揚液管内
を上昇するガス泡により、分断した上側の液体柱を前記
液体柱自然高さより高位に汲み上げることを特徴とす
る。[0006] First, the present invention is based on a low level liquid source.
A pump for pumping liquid to a higher level through a liquid pump having a suction port inserted into the liquid source, a pressure reducing means for reducing the pressure in the liquid pump, and a pressure lower than the liquid level of the liquid source. And a gas introducing means for intermittently introducing a positive-pressure gas into the liquid lifting pipe at a position lower than the natural height of the liquid column in the liquid lifting pipe. Then, the liquid column in the pumping tube is divided by the gas introduced into the liquid pumping tube, and the separated upper liquid column is pumped to a higher level than the natural height of the liquid column by gas bubbles rising in the liquid pumping tube. It is characterized by.
【０００７】また、本発明の他の特徴は、上記減圧揚液
装置のガス導入手段が、前記揚液管内の途中まで挿入さ
れ、そのガス吐出口が、前記液体源の液面より高く前記
液体柱自然高さより低い位置になるように位置決めさ
れ、前記揚液管内へ該ガス吐出口からガスを吐出可能な
送気管と、前記送気管へのガス供給を間欠的に制御する
開閉バルブと、を備えることである。Another feature of the present invention is that the gas introducing means of the vacuum pumping device is inserted halfway into the pumping pipe, and the gas discharge port thereof is higher than the liquid level of the liquid source. An air supply pipe positioned so as to be lower than the natural height of the column and capable of discharging gas from the gas discharge port into the liquid supply pipe, and an opening / closing valve for intermittently controlling gas supply to the air supply pipe, It is to prepare.
【０００８】ここで、正圧のガスとは、減圧手段によっ
て減圧された揚液管内の圧力より高い圧力のガスであれ
ばよい。例えば、揚液管内に導入されるガスが空気、窒
素などの場合に、正圧とは、具体的には大気圧又は大気
圧以上が適用される。Here, the positive pressure gas may be a gas having a pressure higher than the pressure in the liquid pumping pipe reduced by the pressure reducing means. For example, when the gas introduced into the pumping pipe is air, nitrogen, or the like, the positive pressure specifically refers to an atmospheric pressure or a pressure higher than the atmospheric pressure.
【０００９】減圧された揚液管内に正圧のガスを導入す
ることで、揚液管内を上昇するガス泡が大きくなって揚
液管の内径を占めるようになると、揚液管内の液体柱が
分断される。このため、分断された液体柱の上側の液体
がガス泡によって押し上げられて、高位、つまり減圧揚
液管内での液体柱自然高さ以上にまで液体を汲み上げる
ことが可能となる。[0009] By introducing a positive pressure gas into the depressurized pumping pipe, the gas bubbles rising in the pumping pipe become large and occupy the inner diameter of the pumping pipe. Be divided. For this reason, the liquid above the divided liquid column is pushed up by the gas bubbles, and it becomes possible to pump the liquid to a higher position, that is, higher than the natural height of the liquid column in the vacuum pumping pipe.
【００１０】[0010]
【発明の実施の形態】以下、図面を用いてこの発明の好
適な実施の形態（以下実施形態という）について説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention (hereinafter, referred to as embodiments) will be described below with reference to the drawings.
【００１１】図１は、この発明に係る減圧揚液装置の構
成を概念的に示している。この装置の特徴は、真空ポン
プなどの減圧手段を用い、揚程Ｈｄが真空（減圧）揚液
管内での液体柱の自然高さＨｃを超える条件の揚液を実
行することである。FIG. 1 conceptually shows the structure of a vacuum pumping apparatus according to the present invention. The feature of this apparatus is that the liquid is pumped under the condition that the head Hd exceeds the natural height Hc of the liquid column in the vacuum (depressurized) liquid pumping pipe by using a pressure reducing means such as a vacuum pump.
【００１２】この装置は、減圧手段である真空ポンプ１
４と、この真空ポンプ１４に連通され、その下端の吸引
口１０ａが例えば地下に溜まった水等の液体源３０中に
挿入される揚液管１０を備える。また、揚液管１０に
は、液面Ｈ０と真空揚液管内の液体柱の自然高さＨｃ
（ｃ点）との間の位置ｘ（高さＨｘ）に、空気などのガ
スを導入するガス導入手段２０として給気バルブが取り
付けられている。This apparatus has a vacuum pump 1 as a pressure reducing means.
And a pumping pipe 10 connected to the vacuum pump 14 and having a suction port 10a at the lower end inserted into a liquid source 30 such as water collected underground. Further, the pumping pipe 10 has a liquid surface H0 and a natural height Hc of the liquid column in the vacuum pumping pipe.
At a position x (height Hx) between (point c), an air supply valve is attached as gas introduction means 20 for introducing gas such as air.
【００１３】液体源３０に揚液管１０の吸引口１０ａを
挿入し、真空ポンプ１４を駆動すると、この真空ポンプ
１４に連通された水封式のタンク１６内と揚液管１０内
の空気が排気されて減圧される。管内が減圧されて所定
の負圧となると、管内の液面が上昇し、高さＨｃ（液体
が水の場合に約１０ｍ）付近まで到達する。When the suction port 10a of the pumping tube 10 is inserted into the liquid source 30 and the vacuum pump 14 is driven, the air in the water-sealed tank 16 and the pumping tube 10 communicated with the vacuum pump 14 are discharged. It is evacuated and decompressed. When the pressure in the pipe is reduced to a predetermined negative pressure, the liquid level in the pipe rises and reaches a height Hc (about 10 m when the liquid is water).
【００１４】ここで、給気バルブを短期間だけ開放し
て、ｘ点で揚液管１０内に正圧ガスとして例えば大気圧
の空気を導入すると、導入されたガス泡によって揚液管
１０内の高さＨｃの液体柱が、高さＨｘ付近で上下に分
断される。高さＨｘにおける揚液管内の圧力とその位置
でのガス泡の圧力との圧力差と、ガス泡の受ける浮力に
よって、ガス泡が管内を上昇するため、一旦ガス泡によ
って液体柱が分断されると、その上側のＨｃ未満の長さ
の液体柱はガス泡によって上方に向けて勢い良く押し上
げられ、液体が高さＨｃ（真空管内での自然液面ｃ）を
超える高さＨｄまで汲み上げられ、タンク１６内に溜ま
ることとなる。Here, when the air supply valve is opened for a short period of time and, for example, atmospheric pressure air is introduced as a positive pressure gas into the liquid pumping pipe 10 at the point x, the introduced gas bubbles cause the liquid in the liquid pumping pipe 10 to be opened. The liquid column having the height Hc is vertically divided near the height Hx. Since the gas bubble rises in the tube due to the pressure difference between the pressure in the pumping tube at the height Hx and the pressure of the gas bubble at that position and the buoyancy received by the gas bubble, the liquid column is once broken by the gas bubble. The liquid column having a length of less than Hc above the liquid column is vigorously pushed upward by gas bubbles, and the liquid is pumped up to a height Hd exceeding the height Hc (natural liquid level c in the vacuum tube), It will accumulate in the tank 16.
【００１５】このように真空ポンプ１４を駆動した状態
で、給気バルブの開閉を繰り返せば、負圧となった揚液
管１０内に間欠的にガス泡が導入され、これにより管内
で高さＨｃの液体柱が順次分断され、Ｈｃを超える高さ
にまで液体が汲み上げられ、揚程Ｈｄが真空管内の液体
柱自然高さＨｃを超える揚液装置となる。If the air supply valve is repeatedly opened and closed while the vacuum pump 14 is driven in this manner, gas bubbles are intermittently introduced into the liquid pumping tube 10 which has become a negative pressure. The liquid column of Hc is sequentially divided, the liquid is pumped up to a height exceeding Hc, and a pump Hd whose head Hd exceeds the natural height Hc of the liquid column in the vacuum tube is obtained.
【００１６】図２は、本発明に係る減圧揚液装置の他の
構成を示している。図１と同様に、揚液管１０には真空
ポンプ１４が連通されており、揚液管１０の吸引口１０
ａは低位にある液体源３０内に挿入可能となっている。
図１と異なる点は、揚液管１０の液体源水位Ｈ０から真
空管内での液体柱自然高さＨｃまでの間の位置にガスを
導入するガス導入手段２０の構成である。FIG. 2 shows another configuration of the vacuum pumping apparatus according to the present invention. As in FIG. 1, a vacuum pump 14 is connected to the liquid pump 10 and a suction port 10 of the liquid pump 10 is provided.
a can be inserted into the lower liquid source 30.
The difference from FIG. 1 lies in the configuration of the gas introducing means 20 for introducing gas into a position between the liquid source water level H0 of the pumping tube 10 and the liquid column natural height Hc in the vacuum tube.
【００１７】図２において、ガス導入手段２０は、揚液
管１０の途中まで挿入された送気管２２と、この送気管
２２から揚液管内へガスを間欠的に吐出するために、ｏ
ｎ−ｏｆｆタイマ２６によって動作タイミングが制御さ
れる開閉バルブ２４を備える。揚液管１０内に挿入され
た送気管２２の下端はガス吐出口を構成するが、この吐
出口が、液体源３０の液面Ｈ０より高く、真空管内での
液体柱の高さＨｃより低い位置ａになるように揚液管１
０に対して送気管２２が位置決め固定されている。な
お、図２の構成において、送気管２２は揚液管１０内に
一本挿入されているが、複数本挿入されていてもよく、
また一本の送気管２２に複数のガス吐出口が設けられて
いる構成も採用可能である。いずれの場合にも、送気管
２２のガス吐出口は、水面Ｈ０より高く、真空管内での
液体柱自然高さＨｃより低い位置に設定する必要があ
る。In FIG. 2, a gas introducing means 20 includes an air supply pipe 22 inserted halfway through the liquid pumping pipe 10 and an air supply pipe 22 for intermittently discharging gas from the gas supply pipe 22 into the liquid pumping pipe.
An opening / closing valve 24 whose operation timing is controlled by an n-off timer 26 is provided. The lower end of the air supply pipe 22 inserted into the liquid supply pipe 10 constitutes a gas discharge port, which is higher than the liquid level H0 of the liquid source 30 and lower than the height Hc of the liquid column in the vacuum tube. Pumping pipe 1 so that it is at position a
The air supply pipe 22 is positioned and fixed with respect to 0. In addition, in the structure of FIG. 2, although one gas supply pipe 22 is inserted into the liquid pumping pipe 10, a plurality of gas supply pipes may be inserted.
Also, a configuration in which a plurality of gas discharge ports are provided in one air supply pipe 22 can be adopted. In any case, the gas discharge port of the air supply pipe 22 needs to be set at a position higher than the water surface H0 and lower than the natural height Hc of the liquid column in the vacuum tube.
【００１８】揚液管１０と真空ポンプ１４との間には、
真空ポンプ１４に連通されている水封式のタンク１６が
設けられており、このタンク１６と揚液管１０との間の
管路に、管路の開閉を行う管路バルブ１２が設けられて
いる。なお、このバルブ１２は減圧下での自然液体面以
上への揚液を実行するために不可欠な部材ではなく、省
略する事もできる。Between the liquid pump 10 and the vacuum pump 14,
A water-sealed tank 16 communicating with the vacuum pump 14 is provided, and a pipe line between the tank 16 and the liquid pumping pipe 10 is provided with a pipe valve 12 for opening and closing the pipe. I have. Note that this valve 12 is not an indispensable member for performing liquid pumping above the natural liquid surface under reduced pressure, and may be omitted.
【００１９】次に、動作について説明する。まず、図１
と同様に揚液管１０の吸引口１０ａを低位にある液体源
３０中に挿入し、管路バルブ１２及び開閉バルブ２４を
閉じて真空ポンプ１４を駆動する。タンク１６内の空気
が排気されて圧力が低下し、所定の負圧で一定になった
後、管路バルブ１２を開放する。すると、揚液管１０
は、急速に液体源３０から液体を吸い上げ、揚液管１０
内に揚水された液体柱の高さが、負圧（真空）管内での
液体柱の自然高さに相当するＨｃ程度となる。なお、管
路バルブ１２を開放した際、揚液管１０が瞬時に揚液を
行うため、送気管２２内は、そのガス吐出口付近までガ
ス（例えば空気）で満たされている。Next, the operation will be described. First, FIG.
Similarly, the suction port 10a of the liquid pumping tube 10 is inserted into the liquid source 30 at a lower position, the pipe valve 12 and the open / close valve 24 are closed, and the vacuum pump 14 is driven. After the air in the tank 16 is exhausted and the pressure is reduced and becomes constant at a predetermined negative pressure, the pipeline valve 12 is opened. Then, the pumping tube 10
Quickly draws up liquid from the liquid source 30 and pumps
The height of the liquid column pumped into the inside is about Hc corresponding to the natural height of the liquid column in the negative pressure (vacuum) tube. When the pipe valve 12 is opened, the pumping pipe 10 instantaneously pumps liquid. Therefore, the inside of the air supply pipe 22 is filled with gas (for example, air) up to the vicinity of the gas discharge port.
【００２０】次に、ｏｎ−ｏｆｆタイマ２６を作動さ
せ、間欠的に開閉バルブ２４を開ける（例えば開放時間
０．６３ｓｅｃ、閉鎖期間１０．０１ｓｅｃ）。開閉バ
ルブ２４が開放されると、送気管２２のガス吐出口から
ガス泡３２が吹き出す。開閉バルブ２４は、短期間しか
開放されず、また真空ポンプ１４が動作し続けているた
め、正圧のガス泡３２が吹き出すことで、一旦上昇した
管内の圧力は、開閉バルブ２４が閉鎖するとすぐ所定の
負圧に戻る。Next, the on-off timer 26 is operated to open the opening / closing valve 24 intermittently (for example, the opening time is 0.63 sec and the closing time is 10.01 sec). When the open / close valve 24 is opened, gas bubbles 32 blow out from the gas discharge port of the air supply pipe 22. Since the open / close valve 24 is opened only for a short period of time and the vacuum pump 14 continues to operate, the pressure in the pipe that has once risen by the blowing of the positive pressure gas bubbles 32 increases as soon as the open / close valve 24 closes. It returns to the predetermined negative pressure.
【００２１】吹き出されたガス泡３２は、一旦ａ点から
下降するが、ガス泡３２の圧力（正圧）と管内ａ点付近
の圧力（負圧）とで圧力差が存在すること、ガス泡３２
が浮力を受けること、及びガス泡３２が液体（水）より
軽いことから、その後揚液管内を上昇し始める。The blown-out gas bubbles 32 once descend from the point a. However, there is a pressure difference between the pressure (positive pressure) of the gas bubbles 32 and the pressure (negative pressure) near the point a in the pipe. 32
Is subjected to buoyancy and the gas bubbles 32 are lighter than the liquid (water), after which they begin to rise in the pumping tube.
【００２２】揚液管内を上昇するにつれガス泡３２は膨
張し、また、間欠的に吐出された複数のガス泡３２が上
昇に従って集合することで、やがて揚液管１０の内径を
占めるような砲弾型のガス泡（スラグ流）を形成し、こ
のスラグ流が揚液管内を上昇することとなる。The gas bubbles 32 expand as they ascend in the pumping tube, and a plurality of intermittently discharged gas bubbles 32 gather as they ascend to form a shell that eventually occupies the inner diameter of the pumping tube 10. A gas bubble (slag flow) of a mold is formed, and this slag flow rises in the pumping pipe.
【００２３】図３は、形成されたスラグ流３４のｂ点付
近での状態を示している。このようなスラグ流３４が形
成されることで、ガス泡３２が吐出される前に高さＨｃ
であった液体柱は、発生したスラグ流３４によって上下
に分断される。FIG. 3 shows a state of the formed slug flow 34 near point b. By forming such a slug flow 34, the height Hc before the gas bubbles 32 are discharged.
Is separated vertically by the generated slag flow 34.
【００２４】減圧状態で管内における液体柱の採りうる
最大の高さがほぼＨｃであり、上記スラグ流３４によっ
てこの液体柱が途中で分断されるため、分断された液体
柱の上側の長さは、例えばｂ点でスラグ流３４が発生し
たとすると、”Ｈｃ−Ｈｂ”となる。従って、この”Ｈ
ｃ−Ｈｂ”の長さの水柱は、負圧状態の揚液管内を上昇
することが可能となる。さらに、揚液管１０内は上に行
くほど真空ポンプ１４に近づき圧力が低くなるため、ス
ラグ流３４は管内を上昇するにつれ、膨張すると共にそ
の上端における上昇速度が速くなる。The maximum possible height of the liquid column in the tube under reduced pressure is approximately Hc, and this liquid column is divided on the way by the slag flow 34. Therefore, the upper length of the divided liquid column is For example, if the slag flow 34 is generated at the point b, “Hc−Hb” is obtained. Therefore, this "H"
The water column having a length of c-Hb "can rise in the liquid pumping tube in a negative pressure state. Further, the pressure in the liquid pumping tube 10 becomes lower as it goes closer to the vacuum pump 14 as it goes upward. As the slug flow 34 rises in the pipe, it expands and the rising speed at its upper end increases.
【００２５】このため、一旦スラグ流３４が形成されて
管内の液体柱が分断されると、分断された上側の液体
は、スラグ流３４によって上方に勢い良く押し上げられ
ることとなる。For this reason, once the slug flow 34 is formed and the liquid column in the pipe is divided, the separated upper liquid is pushed up vigorously by the slug flow 34.
【００２６】従って、結果として、低位にある液体源３
０から高さＨｃより高い位置Ｈｄまで液体を汲み上げ
て、タンク１６に貯めることが可能となり、真空ポンプ
１４を用い、揚程Ｈｄ（＞Ｈｃ）の液体の間欠的な汲み
上げが行われる。なお、本実施形態の装置において、汲
み上げる液体に固体が混ざっている場合にも適用可能で
ある。Therefore, as a result, the lower liquid source 3
The liquid can be pumped from 0 to a position Hd higher than the height Hc and stored in the tank 16, and intermittent pumping of the liquid with a head Hd (> Hc) is performed using the vacuum pump 14. Note that, in the apparatus of the present embodiment, the present invention is also applicable to a case where a solid is mixed in a liquid to be pumped.
【００２７】[0027]
【実施例】図２に示す装置を用いて行った揚水実験の結
果を以下実施例として示す。本実施例において、汲み上
げたのは水であり、揚程Ｈｄは１１．３ｍ、減圧揚液管
内での液体柱自然高さＨｃは９．８２ｍである。また、
送気管２２のガス吐出口の高さＨａは、水面Ｈ０に対し
て２．５ｍに設定した。揚液管１０には、内径φ1＝２
４．６ｍｍ、外径φ2＝２９．７ｍｍの硬質のサクショ
ンパイプを用い、送気管２２には内径φ1＝９．４ｍ
ｍ、外径φ2＝１１．２ｍｍの軟質ビニルパイプを用い
た。但し、硬質のパイプを用いてもよい。EXAMPLE The results of a pumping experiment performed using the apparatus shown in FIG. 2 are shown below as examples. In the present embodiment, water was pumped up, the head Hd was 11.3 m, and the natural height Hc of the liquid column in the vacuum pump was 9.82 m. Also,
The height Ha of the gas discharge port of the air supply pipe 22 was set to 2.5 m with respect to the water surface H0. The pumping pipe 10 has an inner diameter φ 1 = 2
4.6 mm, using a rigid suction pipe having an outer diameter phi 2 = 29.7 mm, the flue 22 is an inner diameter phi 1 = 9.4 m
m, a soft vinyl pipe having an outer diameter φ 2 = 11.2 mm was used. However, a hard pipe may be used.
【００２８】送気管２２の開閉バルブ２４には、電磁バ
ルブを用い、この電磁バルブをｏｎ−ｏｆｆタイマ２６
によって自動的に開閉制御した。また、電磁バルブの開
放時間は、０．６３ｓｅｃ、閉鎖時間は１０．０１ｓｅ
ｃに設定した。An electromagnetic valve is used as the opening / closing valve 24 of the air supply pipe 22, and the electromagnetic valve is turned on / off by a timer 26.
Opening and closing control automatically. The opening time of the electromagnetic valve is 0.63 sec, and the closing time is 10.01 sec.
c.
【００２９】真空ポンプ１４としては、送気量５０リッ
トル／ｍｉｎ、達成圧力７．５×１０-4ｍｍＨｇ（１ｍ
ｍＨｇ≒１３３ｋＰａ）、消費電力２００Ｗの装置を用
いた。なお、タンク１６には、硬質のサクションパイプ
（内径φ1＝１００．６ｍｍ、外径φ2＝１１３．２ｍ
ｍ）を用いた。但し、これには限られない。The vacuum pump 14 has an air supply rate of 50 liter / min and an achieved pressure of 7.5 × 10 −4 mmHg (1 m
mHg ≒ 133 kPa) and an apparatus with a power consumption of 200 W were used. The tank 16 has a hard suction pipe (inner diameter φ 1 = 100.6 mm, outer diameter φ 2 = 113.2 m).
m) was used. However, it is not limited to this.
【００３０】低位に配置された水源３０に揚液管１０の
吸引口１０ａを挿入し、管路バルブ１２及び送気管２２
の開閉バルブ２４を閉鎖した状態で真空ポンプ１４を駆
動し、タンク１６内の圧力がＰｏ＝−９．９３ｔｆ／ｍ
2（−９７．３１ｋＰａ：１ｔｆ／ｍ2＝９．８ｋＰａ）
と一定になった後、管路バルブ１２を開放する。これに
より揚液管１０内の高さＨｃまで瞬時に水面が上昇す
る。なお、瞬時揚水のため、送気管２２は、ａ点付近ま
で空気で満たされている。この後、ｏｎ−ｏｆｆタイマ
２６を動作させて、揚液管１０内に空気を間欠的に導入
し、気泡の挙動とタンク１６に蓄えられた揚水量を測定
した。なお、揚水実験時、気圧は９７７．６ｈＰａ、気
温４．９℃、水温１３．３℃であった。The suction port 10a of the pumping pipe 10 is inserted into the water source 30 arranged at a lower position, and the pipe valve 12 and the air supply pipe 22 are inserted.
The vacuum pump 14 is driven in a state where the opening / closing valve 24 is closed, and the pressure in the tank 16 is Po = −9.93 tf / m.
2 (−97.31 kPa: 1 tf / m 2 = 9.8 kPa)
After that, the pipeline valve 12 is opened. As a result, the water level rises instantaneously to the height Hc in the liquid pumping pipe 10. Note that, for instantaneous pumping, the air supply pipe 22 is filled with air up to near point a. Thereafter, the on-off timer 26 was operated to intermittently introduce air into the liquid pumping tube 10 to measure the behavior of bubbles and the amount of pumped water stored in the tank 16. At the time of the pumping experiment, the pressure was 977.6 hPa, the temperature was 4.9 ° C., and the water temperature was 13.3 ° C.
【００３１】送気管２２の開閉バルブ（電磁バルブ）２
４の開閉の繰り返し（開放時間０．６３ｓｅｃ、閉鎖期
間１０．０１ｓｅｃ）に伴って、タンク１６内の圧力は
初期値Ｐｏ＝−９．９３ｔｆ／ｍ2から、開閉回数Ｎ＝
２０回（経過時間ｔ＝３．５５ｍｉｎ）では、Ｐｏ＝−
９．５５ｔｆ／ｍ2に、開閉回数Ｎ＝４０回（経過時間
ｔ＝７．１ｍｉｎ）では、Ｐｏ＝−９．４０ｔｆ／ｍ2
となり、真空度は多少低下したが、その後はＰｏ＝−
９．４０ｔｆ／ｍ2となり、この値が維持された。Opening / closing valve (electromagnetic valve) 2 for air supply pipe 22
With the repetition of opening and closing (opening time 0.63 sec, closing period 10.01 sec), the pressure in the tank 16 changes from the initial value Po = −9.93 tf / m 2 to the number of opening / closing N =
At 20 times (elapsed time t = 3.55 min), Po = −
The 9.55tf / m 2, the opening and closing times N = 40 times (elapsed time t = 7.1min), Po = -9.40tf / m 2
, And the degree of vacuum slightly decreased, but thereafter Po = −
It was 9.40 tf / m 2 , and this value was maintained.
【００３２】一回の送気管開閉バルブ２４の開放によ
り、送気管２２から吹き出された気泡３２は、ａ点（高
さ２．５ｍ地点）から高さ１．７ｍ〜２．１ｍ程度の地
点まで約５０ｃｍ程度下降したが、その後、揚液管１０
を上昇した。また、上昇時に気泡３２は膨張し、かつ複
数の気泡３２が集合して図３のようなスラグ流３４を形
成し、これにより揚液管１０内の高さＨｃの水柱がＨｃ
より短い長さに分断され、スラグ流３４は、分断した上
側の水を押し上げながら揚液管１０内を上昇した。By opening the air supply pipe opening / closing valve 24 once, the air bubbles 32 blown out from the air supply pipe 22 move from the point a (point 2.5 m in height) to a point about 1.7 m to 2.1 m in height. Although it descended about 50 cm, the pumping pipe 10
Rose. In addition, the bubbles 32 expand when rising, and the plurality of bubbles 32 gather to form a slag flow 34 as shown in FIG. 3, whereby the water column having a height Hc in the pumping pipe 10 becomes Hc.
The slag flow 34 was divided into shorter lengths, and rose in the liquid pumping tube 10 while pushing up the divided upper water.
【００３３】スラグ流３４の先端の速度は、水面Ｈ０か
らの高さが３．０ｍ〜５．５ｍ区間において、Ｖ１＝
０．５〜０．６ｍ／ｓｅｃ程度、５．５〜９ｍ付近の区
間において、Ｖ２＝０．８〜１．１ｍ／ｓｅｃ程度であ
った。揚水管１０内の負圧が大きくなるにつれて、この
上昇速度は速くなる。図２の装置では、上述したように
揚液管１０の上にいくにつれ真空ポンプ１４に近づいて
負圧が大きくなるため、スラグ流３４は上昇するにつれ
てその上昇速度が速くなる。また、スラグ流３４の末端
が水面Ｈ０から５．５ｍ（図２のｂ点）を通過するとき
のスラグ流の長さＬは、２．８ｍ〜４．０ｍ程度とかな
り長くなっていた。The speed at the tip of the slug flow 34 is such that V1 = V1 = 3.0 m to 5.5 m from the water surface H0.
In a section around 0.5 to 0.6 m / sec and around 5.5 to 9 m, V2 was about 0.8 to 1.1 m / sec. As the negative pressure in the pumping pipe 10 increases, the rising speed increases. In the apparatus of FIG. 2, as described above, the negative pressure increases toward the vacuum pump 14 as it goes above the liquid supply pipe 10, so that the rising speed of the slag flow 34 increases as it rises. In addition, the length L of the slag flow when the end of the slag flow 34 passes 5.5 m from the water surface H0 (point b in FIG. 2) was as long as about 2.8 m to 4.0 m.
【００３４】以上のような条件で、開閉バルブ２４の開
閉回数Ｎ＝７０回（経過時間ｔ＝１２．４１ｍｉｎ）の
時点で、高さＨｄ＝１１．３ｍまで上昇し、タンク１６
内に溜まった水は、６３．４リットル（５．１１リット
ル／ｍｉｎ）となった。Under the above conditions, the height Hd rises to 11.3 m when the opening / closing frequency N of the opening / closing valve 24 = 70 (elapsed time t = 12.41 min), and the tank 16
The amount of water accumulated in the inside was 63.4 liters (5.11 liters / min).
【００３５】以上のように、図２のような揚水装置を用
いて１１．３ｍの揚程で、５．１リットル／ｍｉｎの揚
水を真空ポンプ１４と送気管によるガス導入によって実
現できた。As described above, pumping at 5.1 liter / min was achieved at a lift of 11.3 m by using the pumping apparatus as shown in FIG. 2 by introducing gas through the vacuum pump 14 and the air supply pipe.
【００３６】上記実施例に示した条件の中で、例えば揚
液管１０及び送気管２２の断面積、開閉バルブ２４の開
閉時間（開放時間及び閉鎖時間）、揚液管１０への送気
管２２の挿入長さ（ガス吐出口１０ａの水面Ｈ０からの
高さ）等は、揚水条件に応じて調整、変更すればよい。
なお、これらの条件は、揚液管１０内で図３に示すよう
なスラグ流３４が形成されるのに十分な条件を満たして
いればよい。このような調整や変更で条件に応じた適切
なパワー及び揚液能力を有する減圧揚液装置を実現でき
る。Under the conditions shown in the above embodiment, for example, the cross-sectional areas of the liquid supply pipe 10 and the air supply pipe 22, the opening / closing time of the opening / closing valve 24 (opening time and closing time), the air supply pipe 22 May be adjusted or changed in accordance with the pumping conditions, etc. (the height of the gas discharge port 10a from the water surface H0).
Note that these conditions only need to satisfy the conditions sufficient for the formation of the slag flow 34 as shown in FIG. With such adjustments and changes, it is possible to realize a reduced-pressure pumping apparatus having appropriate power and pumping capacity according to conditions.
【００３７】[0037]
【発明の効果】以上説明したように、この発明において
は、減圧手段によって揚液管内を減圧すると共に、管内
において、低位の水面より高く真空管内での液体柱自然
高さより低い位置に、正圧（例えば、大気圧以上）のガ
ス（例えば空気）を間欠的に導入することで、揚液管内
で液体柱を汲み上げ可能な長さに分断する。As described above, in the present invention, the pressure in the pumping pipe is reduced by the pressure reducing means, and the positive pressure is set in the pipe at a position higher than the lower water surface and lower than the natural height of the liquid column in the vacuum pipe. By intermittently introducing a gas (for example, air) having a pressure of, for example, atmospheric pressure or more, the liquid column is divided into a length that can be pumped up in the pumping pipe.
【００３８】従って、減圧手段とガス導入手段という簡
易な構成によって、真空管内での液体柱の自然高さ以上
の揚程において液体を低位から高位に汲み上げることが
可能となる。Therefore, with a simple structure of the decompression means and the gas introduction means, it becomes possible to pump liquid from a low level to a high level at a head higher than the natural height of the liquid column in the vacuum tube.
【００３９】また、揚液管内に送気管を挿入し、この送
気管への給気を制御するバルブを設けることでガス導入
手段を構成すれば、揚液管内にガス導入手段の大半が収
納されていることになり装置の持ち運びに便利であると
ともに、ガス導入手段の破損の可能性が低くなる。さら
に揚液管は地下などに延下されて用いられるため十分な
強度が要求されるが、送気管は、揚液管内に配置される
ため決められた位置でガス吐出ができれば、特別高い強
度は要求されず、材料の選択幅が広くなる。従って、減
圧揚液装置の製造コスト低減に非常に有利となる。If the gas supply means is constituted by inserting an air supply pipe into the liquid supply pipe and providing a valve for controlling the supply of air to the gas supply pipe, most of the gas introduction means is accommodated in the liquid supply pipe. As a result, the apparatus is convenient to carry, and the possibility of damage to the gas introduction means is reduced. Furthermore, since the pumping pipe is used by extending it underground, sufficient strength is required, but the air supply pipe is located inside the pumping pipe, so if gas can be discharged at a predetermined position, extra high strength is required. It is not required, and the range of material selection is wide. Therefore, it is very advantageous to reduce the manufacturing cost of the vacuum pumping device.
【００４０】さらに、本発明では、揚液管の下端である
吸引口を低位の液体源中に挿入し、揚液管の途中にガス
を導入すれば良いため、減圧手段を高位に配置でき、ガ
ス導入手段についても比較的高い位置に配置すれば良い
ため、狭く深い場所からも揚液管の先端を挿入して揚液
を行うことができる。特に、送気管を揚液管内に挿入し
揚液管内に送気管からガスを吐出する構成では揚液管が
挿入可能な場所であれば非常に狭い場所であってもそこ
から液体の汲み上げを行うことが可能である。Further, in the present invention, the suction port, which is the lower end of the pumping tube, may be inserted into a lower liquid source and gas may be introduced in the middle of the pumping tube. Since the gas introducing means may be arranged at a relatively high position, the liquid can be pumped by inserting the tip of the liquid pumping pipe even from a narrow and deep place. In particular, in a configuration in which the gas supply pipe is inserted into the liquid supply pipe and gas is discharged from the gas supply pipe into the liquid supply pipe, the liquid is pumped up from a very narrow place where the liquid supply pipe can be inserted. It is possible.
【図１】 本発明の実施形態に係る減圧揚液装置の構成
を示す概念的な図である。FIG. 1 is a conceptual diagram showing a configuration of a vacuum pumping device according to an embodiment of the present invention.
【図２】 本発明の実施形態に係る減圧揚液装置の他の
構成を示す図である。FIG. 2 is a diagram showing another configuration of the vacuum pumping device according to the embodiment of the present invention.
【図３】 本発明の減圧揚液装置の揚液管内で発生する
スラグ流を示す図である。FIG. 3 is a diagram showing a slag flow generated in a pumping pipe of the vacuum pumping device of the present invention.
【図４】 真空ポンプを用いた一般的な揚液装置の構成
を示す図である。FIG. 4 is a diagram showing a configuration of a general liquid pumping device using a vacuum pump.
１０ 揚液管、１０ａ 吸引口、１２ 管路バルブ、１
４ 真空ポンプ（減圧手段）、１６ タンク、２０ ガ
ス導入手段、２２ 送気管、２４ 開閉バルブ（電磁バ
ルブ）、２６ ｏｎ−ｏｆｆタイマ、３０ 液体（水）
源、３２ ガス泡、３４ スラグ流。10 pumping pipe, 10a suction port, 12 pipe valve, 1
4 vacuum pump (decompression means), 16 tanks, 20 gas introduction means, 22 air supply pipe, 24 opening / closing valve (electromagnetic valve), 26 on-off timer, 30 liquid (water)
Source, 32 gas bubbles, 34 slug flow.
Claims (2)
引口が挿入された揚液管を介し、高位に向けて液体を汲
み上げる装置であり、 前記揚液管内を減圧する減圧手段と、 前記液体源の液面より高くかつ減圧下の揚液管内での液
体柱自然高さより低い位置において前記揚液管内へ正圧
のガスを間欠的に導入するガス導入手段と、を備え、 前記揚液管内に導入したガス泡により前記揚液管内の液
体柱を分断し、前記揚液管内を上昇する該ガス泡によ
り、分断した上側の液体柱を押し上げ、前記液体柱自然
高さより高位に液体を汲み上げることを特徴とする減圧
揚液装置。1. A device for pumping liquid from a lower liquid source to a higher position via a liquid pump tube having a suction port inserted into the liquid source, and a decompression means for depressurizing the liquid inside the liquid pump tube. Gas introduction means for intermittently introducing a gas at a positive pressure into the pumping pipe at a position higher than the liquid level of the liquid source and lower than the natural height of the liquid column in the pumping pipe under reduced pressure, The liquid column in the liquid supply pipe is divided by the gas bubbles introduced into the liquid supply pipe, and the gas bubbles rising in the liquid supply pipe push up the separated liquid column on the upper side, so that the liquid is higher than the natural height of the liquid column. Vacuum pumping device characterized by pumping water.
て、 前記ガス導入手段は、 前記揚液管内の途中まで挿入され、そのガス吐出口が、
前記液体源の液面より高く前記液体柱自然高さより低い
位置になるように位置決めされ、前記揚液管内へ該ガス
吐出口からガスを吐出可能な送気管と、 前記送気管へのガス供給を間欠的に制御する開閉バルブ
と、を備えることを特徴とする減圧揚液装置。2. The vacuum pumping device according to claim 1, wherein the gas introducing means is inserted halfway into the pumping pipe, and the gas discharge port thereof is
An air supply pipe positioned so as to be higher than the liquid level of the liquid source and lower than the natural height of the liquid column, and capable of discharging gas from the gas discharge port into the liquid pumping pipe; and supplying gas to the air supply pipe. A decompression pumping device, comprising: an open / close valve that is intermittently controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04215199A JP3805920B2 (en) | 1999-02-19 | 1999-02-19 | Vacuum pumping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04215199A JP3805920B2 (en) | 1999-02-19 | 1999-02-19 | Vacuum pumping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000240600A true JP2000240600A (en) | 2000-09-05 |
| JP3805920B2 JP3805920B2 (en) | 2006-08-09 |
Family
ID=12627953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04215199A Expired - Fee Related JP3805920B2 (en) | 1999-02-19 | 1999-02-19 | Vacuum pumping device |
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| Country | Link |
|---|---|
| JP (1) | JP3805920B2 (en) |
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| JP2008030021A (en) * | 2006-07-05 | 2008-02-14 | Ebara Corp | Pumping sand transport device and pumping sand transport method |
| GB2470070A (en) * | 2009-05-08 | 2010-11-10 | Transvac Systems Ltd | Gas lift fluid pump apparatus and method |
| CN104211009A (en) * | 2014-09-03 | 2014-12-17 | 蒋伟民 | Self-sucking residue-free pump unit liquid material conveying machine |
| US9512857B2 (en) | 2013-01-18 | 2016-12-06 | Murata Manufacturing Co., Ltd. | Liquid lifting device and liquid lifting method |
| US9902630B2 (en) | 2011-12-22 | 2018-02-27 | Coldharbour Marine Limited | Apparatus and method for liquid pumping |
| CN110907223A (en) * | 2019-10-23 | 2020-03-24 | 核工业北京化工冶金研究院 | Ultra-deep sampling device for critical liquid level high turbidity water and use method thereof |
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| US10765988B2 (en) | 2013-10-14 | 2020-09-08 | Coldharbour Marine Limited | Apparatus and method for treating gas in a liquid medium with ultrasonic energy for chemical reaction |
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1999
- 1999-02-19 JP JP04215199A patent/JP3805920B2/en not_active Expired - Fee Related
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| JP2008030021A (en) * | 2006-07-05 | 2008-02-14 | Ebara Corp | Pumping sand transport device and pumping sand transport method |
| GB2470070A (en) * | 2009-05-08 | 2010-11-10 | Transvac Systems Ltd | Gas lift fluid pump apparatus and method |
| GB2470070B (en) * | 2009-05-08 | 2012-05-16 | Coldharbour Marine Ltd | Liquid pump apparatus and method |
| AU2010244230B2 (en) * | 2009-05-08 | 2014-09-18 | Coldharbour Marine Limited | Liquid pump apparatus and method |
| US8998585B2 (en) | 2009-05-08 | 2015-04-07 | Coldharbour Marine Limited | Liquid pump apparatus and method |
| US10711807B2 (en) | 2010-06-29 | 2020-07-14 | Coldharbour Marine Limited | Gas lift pump apparatus with ultrasonic energy generator and method |
| US9902630B2 (en) | 2011-12-22 | 2018-02-27 | Coldharbour Marine Limited | Apparatus and method for liquid pumping |
| US9512857B2 (en) | 2013-01-18 | 2016-12-06 | Murata Manufacturing Co., Ltd. | Liquid lifting device and liquid lifting method |
| US10765988B2 (en) | 2013-10-14 | 2020-09-08 | Coldharbour Marine Limited | Apparatus and method for treating gas in a liquid medium with ultrasonic energy for chemical reaction |
| CN104211009A (en) * | 2014-09-03 | 2014-12-17 | 蒋伟民 | Self-sucking residue-free pump unit liquid material conveying machine |
| CN110907223A (en) * | 2019-10-23 | 2020-03-24 | 核工业北京化工冶金研究院 | Ultra-deep sampling device for critical liquid level high turbidity water and use method thereof |
| CN110907223B (en) * | 2019-10-23 | 2022-04-05 | 核工业北京化工冶金研究院 | Ultra-deep sampling device for critical liquid level high turbidity water and use method thereof |
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