JPS6124267B2 - - Google Patents
Info
- Publication number
- JPS6124267B2 JPS6124267B2 JP56142446A JP14244681A JPS6124267B2 JP S6124267 B2 JPS6124267 B2 JP S6124267B2 JP 56142446 A JP56142446 A JP 56142446A JP 14244681 A JP14244681 A JP 14244681A JP S6124267 B2 JPS6124267 B2 JP S6124267B2
- Authority
- JP
- Japan
- Prior art keywords
- tank
- liquid
- suction
- pump
- storage 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.)
- Expired
Links
Description
【発明の詳細な説明】
この発明はオイルタンクの内部に溜つている内
留液を貯留槽の吸引作用により排出除去するよう
にしたことを特徴とするオイルタンクの内留液排
出方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for discharging internal liquid from an oil tank, characterized in that internal liquid accumulated inside the oil tank is discharged and removed by the suction action of the storage tank. be.
オイルタンクの内部に堆積するワツクス状スラ
ツジを除去するには、タンク内に設置した噴射機
から高圧液を噴射させてスラツジを破砕溶解し、
溶解したスラツジによる液と噴射した液をタンク
外に排出する方法が採用されている。この場合、
スラツジによる液及び噴射液、即ちタンクの底部
に溜る液体分はできるだけ速かにタンク外に排出
しなければならない。その理由は、スラツジが液
体に浸つていると高圧液の噴射圧による破砕溶解
効果が軽減され、気体に露呈していると上記効果
が著しく増大するからであつて、タンクに溜る液
体分の排出が緩慢であればスラツジが液に浸され
ることになる。 To remove the wax-like sludge that accumulates inside the oil tank, a high-pressure liquid is injected from an injector installed inside the tank to crush and dissolve the sludge.
A method is adopted in which the liquid from the molten sludge and the injected liquid are discharged to the outside of the tank. in this case,
The liquid from the sludge and the spray liquid, i.e. the liquid that collects at the bottom of the tank, must be drained out of the tank as quickly as possible. The reason for this is that when sludge is immersed in liquid, the crushing and dissolving effect due to the injection pressure of high-pressure liquid is reduced, and when exposed to gas, the above effect increases significantly. If it is slow, the sludge will be immersed in the liquid.
従来は上記液体を排出するため、ポンプに接続
した吸引パイプをマンホールなどからタンクの底
部に臨ませ、該ポンプの駆動でタンク内部の液体
を吸引除去している。しかしこの方法だとポンプ
内にスラツジやタンク底部の錆などの固形物が流
入し、ポンプの効果を減少させるし、極端な場合
にはポンプを破損させることがある。又、液体の
レベルが低くなると吸引パイプの先端がタンクの
気体に開口するのでポンプが該気体を吸込むこと
があり、気体を吸い込むとポンプに呼び液が必要
であつたり、或いは自吸式ポンプであつても液の
再吸引まで長時間を要する等、タンク内留液の吸
引性が低下するためタンクの液除去効果が著しく
低減することになる。本発明は上記に鑑み提案さ
れたもので、吸引口をタンクの内部に臨ませた吸
引パイプを貯留槽に連結し、該貯留槽の負圧によ
る吸引作用でタンク内の液体を排出するようにし
たものである。 以下本発明の方法を図面の実施
例に付いて説明すると、例えば浮屋根式オイルタ
ンク１は、内部に堆積するスラツジａを除去する
場合に浮屋根２を多数本の支柱３…で支えるとと
もに内部の液体ｂをできるだけ抜き取る。そして
浮屋根２からは高圧で液が噴射する噴射機４…を
吊設してタンク内部に位置させ、該噴射機４から
の高圧液をスラツジａに直接噴射して破砕溶解
し、液状にするのである。 Conventionally, in order to discharge the liquid, a suction pipe connected to a pump is exposed to the bottom of the tank through a manhole or the like, and the liquid inside the tank is suctioned and removed by driving the pump. However, this method allows solids such as sludge and rust from the bottom of the tank to enter the pump, reducing its effectiveness and, in extreme cases, damaging the pump. Also, when the liquid level is low, the tip of the suction pipe opens into the gas in the tank, so the pump may suck in the gas, and if it sucks in gas, the pump may need to be primed, or if it is a self-priming pump. Even if this happens, it will take a long time until the liquid is re-suctioned, and the suction ability of the liquid remaining in the tank will be reduced, resulting in a significant reduction in the liquid removal effect of the tank. The present invention has been proposed in view of the above, and includes a system in which a suction pipe with a suction port facing the inside of the tank is connected to a storage tank, and the liquid in the tank is discharged by the suction action of the negative pressure of the storage tank. This is what I did. The method of the present invention will be explained below with reference to the embodiments shown in the drawings. For example, in a floating roof type oil tank 1, when removing sludge a deposited inside, a floating roof 2 is supported by a number of supports 3... Remove as much liquid b as possible. An injector 4 that injects liquid at high pressure is hung from the floating roof 2 and is located inside the tank, and the high-pressure liquid from the injector 4 is directly injected into the sludge a to crush and melt it into a liquid. It is.
本発明によればタンク内部の流体を排出する流
出管５をタンク１のマンホール１′からタンタ内
部に導き、該流出管５の先端に設けた吸引口６を
タンク１の底面内部に臨ませるとか、又はタンク
１に設けられているドレンノズル部７に流出管５
を連結し、流出管５の基端を気密な貯留槽８の上
面に連結してある。該貯留槽８には真空ポンプ９
の吸入管１０を上面に接続し、更に真空ポンプ９
の吐出管１１をマンホール１′やルーフマンホー
ル２′からタンク１の内部に開口させる。又、貯
留槽８には液体の吸入ポンプ１２の吸引側に連結
してある吸引管１３を接続し、該吸引ポンプ１２
の吐出管１４を例えば移送槽（図示せず）に接続
する。 According to the present invention, an outflow pipe 5 for discharging the fluid inside the tank is led from the manhole 1' of the tank 1 into the inside of the tank, and the suction port 6 provided at the tip of the outflow pipe 5 is made to face the inside of the bottom surface of the tank 1. , or the drain pipe 5 is connected to the drain nozzle section 7 provided in the tank 1.
The base end of the outflow pipe 5 is connected to the upper surface of an airtight storage tank 8. A vacuum pump 9 is installed in the storage tank 8.
Connect the suction pipe 10 to the top surface, and also connect the vacuum pump 9
A discharge pipe 11 is opened into the tank 1 from a manhole 1' or a roof manhole 2'. Further, a suction pipe 13 connected to the suction side of a liquid suction pump 12 is connected to the storage tank 8.
The discharge pipe 14 is connected to, for example, a transfer tank (not shown).
そして液槽（図示せず）にパイプで連結された
ポンプ１５の吐出口と噴射機４とを連結管１６に
よつて接続する。 The discharge port of the pump 15 connected to a liquid tank (not shown) by a pipe and the injector 4 are connected by a connecting pipe 16.
したがつて真空ポンプ９を駆動すると貯留槽８
の内部が負圧となり、吸引口６に吸引作用が生じ
るのでタンク１の底部に溜る液体は吸入されて流
出管５から貯留槽８に流入する。そして貯留槽８
内の流体を吸引ポンプ１２の駆動で吸引管１３か
ら排出すると、貯留槽８内には真空ポンプ９の作
用と相俟つて負圧になるので、タンク１内の流体
を連続的に吸引して貯留槽８内に流入することが
できる。 Therefore, when the vacuum pump 9 is driven, the storage tank 8
Since the inside of the tank 1 becomes negative pressure and a suction action is generated at the suction port 6, the liquid accumulated at the bottom of the tank 1 is sucked and flows into the storage tank 8 from the outflow pipe 5. and storage tank 8
When the fluid in the tank 12 is discharged from the suction pipe 13 by driving the suction pump 12, negative pressure is created in the storage tank 8 together with the action of the vacuum pump 9, so the fluid in the tank 1 is continuously sucked out. It can flow into the storage tank 8.
この様に本発明によれば噴射機４から噴射する
高圧液によりタンク１の内部に堆積するスラツジ
を破砕溶解し、スラツジの破砕溶解により生じる
液体及び噴射される液を貯留槽８の負圧により吸
引して該貯留槽に流入させるものであつて、タン
ク１の液体レベルが低くなつて吸引口６からタン
ク内の気体が吸引されても、真空ポンプ９の駆動
で貯留槽内を負圧に維持することができるので液
体の吸引効率を低下させることがない。 As described above, according to the present invention, the sludge deposited inside the tank 1 is crushed and dissolved by the high-pressure liquid injected from the injector 4, and the liquid generated by the crushing and dissolution of the sludge and the injected liquid are used by the negative pressure of the storage tank 8. Even if the liquid level in the tank 1 becomes low and the gas in the tank is sucked out from the suction port 6, the vacuum pump 9 is driven to create a negative pressure in the storage tank. Therefore, the liquid suction efficiency is not reduced.
又、噴射機を使用してタンク１の内部に堆積す
るスラツジを崩壊除去する場合、静電気による爆
発を防止するためタンク１の内部に不活性ガスを
充満して不活性雰囲気としているが、タンク内の
不活性ガスを吸引すると隙間から大気が流入して
酸素濃度の上昇により気体組成が変化し、不活性
雰囲気を維持できないことがある。しかし本発明
の実施例によれば真空ポンプ９の吐出管１１をタ
ンク１の内部に開口してあるので、吸引口６から
気体を吸入しても直ちにタンク１に戻すことにな
つて気体組成に変化を生じないので、タンク１内
の酸素濃度を上昇させることがない。そしてタン
ク内から吸引する排気はすべてタンク内に送気す
ることになるのでタンク内の気体雰囲気を変化さ
せないし、不活性ガスやオイルから発生するガス
がタンク周囲に放散することがなく、臭気及び引
火の危険を防止することができる。又、前記した
吸引ポンプ１２の吐出管１４を移送槽を介してポ
ンプ１５に接続すると、タンク１から吸引した液
を貯留槽８に溜めてポンプ１２，１５により噴射
機４から高圧噴射させることができるので、液の
循環利用が可能である。 In addition, when using an injector to disintegrate and remove the sludge that has accumulated inside the tank 1, the inside of the tank 1 is filled with inert gas to create an inert atmosphere to prevent explosions due to static electricity. When an inert gas is sucked in, air flows in through the gap and the gas composition changes due to an increase in oxygen concentration, making it impossible to maintain an inert atmosphere. However, according to the embodiment of the present invention, the discharge pipe 11 of the vacuum pump 9 is opened inside the tank 1, so even if gas is sucked in from the suction port 6, it is immediately returned to the tank 1, and the gas composition is changed. Since no change occurs, the oxygen concentration within the tank 1 does not increase. All the exhaust air sucked from inside the tank is sent into the tank, so the gas atmosphere inside the tank is not changed, and gases generated from inert gas and oil are not dissipated around the tank, causing odors and The risk of ignition can be prevented. Furthermore, when the discharge pipe 14 of the suction pump 12 described above is connected to the pump 15 via a transfer tank, the liquid sucked from the tank 1 can be stored in the storage tank 8 and then injected at high pressure from the injection device 4 by the pumps 12 and 15. Therefore, the liquid can be recycled.
図面の実施例によれば貯留槽８には圧力計１７
と液面計１８とを臨ませてあり、該圧力計１７を
真空ポンプ９に、液面計１８を吸引ポンプ１２に
各々電気的又は空気的に接続してある。そして圧
力計１７は貯留槽８内が設定した圧力となつたと
きに検知して真空ポンプ９をオン又はオフにする
もので、また液面計１８は貯留槽８の液レベルが
設定したときに吸引ポンプ１２をオン又はオフに
するものである。 According to the embodiment of the drawings, the storage tank 8 is equipped with a pressure gauge 17.
The pressure gauge 17 is electrically or pneumatically connected to the vacuum pump 9 and the liquid level gauge 18 to the suction pump 12. The pressure gauge 17 detects when the pressure in the storage tank 8 reaches a set value and turns the vacuum pump 9 on or off.The liquid level gauge 18 detects when the liquid level in the storage tank 8 reaches the set level This turns the suction pump 12 on or off.
この圧力計１７及び液面計１８により貯留槽８
の内圧及び液量を常にコントロールすることがで
きるので、タンク１の内留液除去作業を自動化す
ることができる。更に貯留槽８の内部は仕切板又
は網材１９により区切つて第１室２０と第２室２
１とを構成し、流出管５からの液を第１室２０に
流入させ、第１室２０の液がオーバーフローした
り網材を通過することにより第２室２１に溜め、
第２室２１の液を吸引ポンプ１２で吸引するよう
にしてある。この様な構成であれば流出管５から
貯留槽８内に流入する液に金属等の固形分が含ま
れていたとしても、該固形分は第１室２０に沈澱
することになるので吸引ポンプ１２に導かれるこ
とがなく、液以外のものが回収されないので吸引
ポンプが詰つたり破損しない。また作業中止時に
ドレーン２２やマンホール２３から第１室２０内
の固形分を排出することができる。 By this pressure gauge 17 and liquid level gauge 18, the storage tank 8
Since the internal pressure and liquid volume of the tank 1 can be constantly controlled, the work of removing the internal distillate from the tank 1 can be automated. Furthermore, the inside of the storage tank 8 is divided by a partition plate or a mesh material 19 into a first chamber 20 and a second chamber 2.
1, the liquid from the outflow pipe 5 flows into the first chamber 20, and the liquid in the first chamber 20 is accumulated in the second chamber 21 by overflowing or passing through the mesh material,
The liquid in the second chamber 21 is sucked by a suction pump 12. With such a configuration, even if the liquid flowing into the storage tank 8 from the outflow pipe 5 contains solids such as metals, the solids will settle in the first chamber 20, so the suction pump 12 and nothing other than liquid is collected, so the suction pump will not be clogged or damaged. Moreover, the solid content in the first chamber 20 can be discharged from the drain 22 or the manhole 23 when the work is stopped.
以上要するに本発明によればオイルタンクの内
留液を直接ポンプによつて排出するのではなく、
貯留槽の負圧による吸引作用により排出するよう
にしたので、排出時に気体が混入しても吸引効率
が抵減することがなく、連続的に内留液を吸引排
出することができる。又、ポンプには固形分が吸
入しないのでポンプの作動を阻害することがな
く、連続して長時間の作業を行うことができ、し
かも吸引除去した液の回収路を固形分が通過しな
いので、回収路の途中にある槽の管理も有利であ
る。 In summary, according to the present invention, the internal liquid in the oil tank is not directly discharged by a pump, but
Since the liquid is discharged by the suction action of the negative pressure of the storage tank, the suction efficiency is not reduced even if gas is mixed in during discharge, and the internal liquid can be continuously suctioned and discharged. In addition, since no solids are sucked into the pump, the operation of the pump is not obstructed and continuous work can be performed for long periods of time.Furthermore, solids do not pass through the collection path for the liquid that has been suctioned and removed. Management of tanks along the recovery path is also advantageous.
更には図面で示すように浮屋根式オイルタンク
のスラツジ除去時に有効であるが、他のオイルタ
ンク、液体タンクの場合にも実施することができ
る。 Furthermore, as shown in the drawings, this method is effective in removing sludge from a floating roof type oil tank, but it can also be carried out in the case of other oil tanks and liquid tanks.
図面は本発明を実施する場合の一実施例を示す
概略図である。
The drawings are schematic diagrams showing an embodiment of the present invention.
Claims (1)
ンクの内部に臨ませ、該貯留槽に気体の吸入ポン
プと液体の吸引ポンプとを接続し、上記吸入ポン
プの作動で貯留槽を負圧にして流出管の吸引口か
らオイルタンクの内留液を吸引するとともに吸引
ポンプで吸引除去するようにしたことを特徴とす
るオイルタンクの内留液排出方法。1. The suction port of the outflow pipe connected to the storage tank faces the inside of the oil tank, and a gas suction pump and a liquid suction pump are connected to the storage tank, and the storage tank is made to have a negative pressure by the operation of the suction pump. A method for discharging internal liquid from an oil tank, characterized in that the internal liquid in the oil tank is suctioned from a suction port of an outflow pipe and removed by suction with a suction pump.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56142446A JPS5852078A (en) | 1981-09-11 | 1981-09-11 | How to drain internal liquid from an oil tank |
| US06/366,319 US4426233A (en) | 1981-09-11 | 1982-04-07 | Method for disposal of sludge in floating roof type oil tank |
| US06/567,881 US4515312A (en) | 1981-09-11 | 1984-01-03 | Apparatus for disposal of sludge in a floating roof type oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56142446A JPS5852078A (en) | 1981-09-11 | 1981-09-11 | How to drain internal liquid from an oil tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5852078A JPS5852078A (en) | 1983-03-28 |
| JPS6124267B2 true JPS6124267B2 (en) | 1986-06-10 |
Family
ID=15315496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56142446A Granted JPS5852078A (en) | 1981-09-11 | 1981-09-11 | How to drain internal liquid from an oil tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5852078A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04154477A (en) * | 1990-10-16 | 1992-05-27 | Konbi Kk | Folding mechanism of stroller |
| JPH04154478A (en) * | 1990-10-16 | 1992-05-27 | Konbi Kk | Seat structure of stroller, etc. |
-
1981
- 1981-09-11 JP JP56142446A patent/JPS5852078A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04154477A (en) * | 1990-10-16 | 1992-05-27 | Konbi Kk | Folding mechanism of stroller |
| JPH04154478A (en) * | 1990-10-16 | 1992-05-27 | Konbi Kk | Seat structure of stroller, etc. |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5852078A (en) | 1983-03-28 |
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