JPS5934592B2 - Liquid level fluctuation prevention device for tank contents - Google Patents
Liquid level fluctuation prevention device for tank contentsInfo
- Publication number
- JPS5934592B2 JPS5934592B2 JP55104340A JP10434080A JPS5934592B2 JP S5934592 B2 JPS5934592 B2 JP S5934592B2 JP 55104340 A JP55104340 A JP 55104340A JP 10434080 A JP10434080 A JP 10434080A JP S5934592 B2 JPS5934592 B2 JP S5934592B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid level
- disk
- liquid
- tank
- prevention device
- 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】
本発明はタンク内容液の液面揺動防止装置に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for preventing liquid level fluctuation of liquid in a tank.
従来石油タンク等内容液の液面揺動防止法としては数多
くの提案がなされているが、以下の点のいずれかで満足
のいかぬものであつた。Many proposals have been made in the past as methods for preventing fluctuations in the liquid level of the contents of petroleum tanks, etc., but none of them have been satisfactory due to one of the following points.
すなわち（１）液面のレベルが使用状況により変動する
が、その変動に追随して液面揺動を効果的に防止できる
こと。（２）タンクの側板、底板は比較的厚みが薄く、
液面揺動防止装置は側板、底板とは構造的に無関係であ
ること。That is, (1) although the liquid level fluctuates depending on usage conditions, fluctuations in the liquid level can be effectively prevented by following the fluctuations. (2) The side and bottom plates of the tank are relatively thin;
The liquid level fluctuation prevention device shall be structurally unrelated to the side plates and bottom plate.
（板厚を増す必要が生じるものは不可）（３）液面揺動
のうち最も問題となる一次振動を確実に防ぎ得ること。(Things that require an increase in plate thickness are not allowed.) (3) It must be possible to reliably prevent primary vibration, which is the most problematic among liquid level fluctuations.
（４）液面揺動を完全に防止すると内容液は１００％が
固定水となり、地震時に生ずる全水平力は逆に大きくな
る。(4) If liquid level fluctuations are completely prevented, 100% of the liquid content will be fixed water, and the total horizontal force generated during an earthquake will conversely increase.
全水平力が問題となる場合のために、固定水の割合を調
整できる機構を有すること。本発明は以上の諸条件に照
しても一応すべてクリヤーする新しい液面揺動防止装置
を提案するもので、地震による石油タンク等の液面揺動
を、液面のレベルに無関係に有効に阻止し、これにより
石油等危険物の流失による二次災害を防止しようとする
ものである。There should be a mechanism to adjust the percentage of fixed water in case total horizontal force is a problem. The present invention proposes a new liquid level fluctuation prevention device that satisfies all of the above conditions, and effectively prevents liquid level fluctuations in oil tanks, etc. caused by earthquakes, regardless of the liquid level. The aim is to prevent secondary disasters caused by the spillage of dangerous substances such as oil.
以下添付図面を参照して本発明を詳述する。The present invention will be described in detail below with reference to the accompanying drawings.
第１図および第２図において、１はタンク、２はタンク
１内の液面上に浮かべられた所定形状のドーナツ状中空
円板、３は該円板２の外周側下部に円周方向所定間隔を
おいて取付けられた円板支’承用ロッドで、各ロッド上
端は自在継手４を介して円板下部に鉛直軸に対して一定
の角度θだけ傾けて取付けられると共に各ロッド下端は
タンク底板５上に滑動自在に立設されている。このため
、液面が使用状態により上下に変動す・ ると、浮き円
板２はそれに追随して上下しようとするが、この時、第
２図に示すように矢印の方向に円板２が回転し、これに
よりロッド３の傾斜角度が変化して浮き円板２の液面追
随性を可能にしている。In FIGS. 1 and 2, 1 is a tank, 2 is a donut-shaped hollow disk with a predetermined shape floating on the liquid level in the tank 1, and 3 is a predetermined portion in the circumferential direction at the lower part of the outer circumferential side of the disk 2. The rods for supporting the disk are installed at intervals, and the upper end of each rod is attached to the bottom of the disk via a universal joint 4 at an angle of a certain angle θ with respect to the vertical axis, and the lower end of each rod is attached to the tank. It stands slidably on the bottom plate 5. Therefore, when the liquid level fluctuates up and down depending on the usage condition, the floating disk 2 tries to follow it up and down, but at this time, the disk 2 moves in the direction of the arrow as shown in Figure 2. The rod 3 rotates, thereby changing the angle of inclination of the rod 3, allowing the floating disk 2 to follow the liquid level.
第３図は液面が低下したときの状態を示したものである
。又地震により液面揺動が生じようとすると、この場合
は左右で非対象な液面の上下となるため、浮き円板２は
一定の方向に回転できず、従つてロツド３により強固に
液面を一定に保つよう作用し、非対称液面変動、即ち一
次液面揺動を確実に防止可能である。FIG. 3 shows the situation when the liquid level is lowered. Furthermore, if the liquid level is to fluctuate due to an earthquake, the liquid level will rise and fall asymmetrically on the left and right sides, so the floating disk 2 will not be able to rotate in a fixed direction, so the rod 3 will firmly hold the liquid level. It acts to keep the surface constant, and can reliably prevent asymmetric liquid level fluctuations, that is, primary liquid level fluctuations.
第４図は本発明の他の例を示すもので、ロツド３による
アンカーカをタンク底板に期待できないときに好適に使
用されるものである。FIG. 4 shows another example of the present invention, which is preferably used when the anchor force provided by the rod 3 cannot be expected on the tank bottom plate.
即ち第４図の装置は液表面の浮き同板２と同様な円板２
″をタンク底板５近くに配置し、該円板２″の外周側上
部に各傾斜ロツド３の下端を自在継手４を介して連結し
たもので、液面の上下変動に応じて一体に追随可能であ
ると共に円板２７による拘束効果により地震による液面
揺動をも良好に防止することができる。尚円板２′によ
る拘束効果は、円板とタンク側板８との間隙、円板中央
部の抜穴６の大きさ等により変るので、揺動の速度等を
考慮して円板形状を適切に設計することが望ましい。又
液面揺動を完全に押えるように構成した場合には固定水
増大による水平力が大きくなるため、例えば円板とタン
ク側板との間隙及び円板中央部の抜穴を大きくするが、
或いは第５図に示すごとく円板２，２″の一方又は両方
に液動揺圧力を抜くための抜穴７を設けるか、又はこれ
らを適宜組み合せることにより固定水の増加を少なくし
、液面揺動を多小許容できるように設計することもでき
る。That is, the device shown in FIG.
'' is placed near the tank bottom plate 5, and the lower end of each inclined rod 3 is connected to the upper outer peripheral side of the disk 2'' via a universal joint 4, so that it can integrally follow the vertical fluctuations of the liquid level. In addition, due to the restraining effect of the disk 27, fluctuations in the liquid level due to earthquakes can be effectively prevented. The restraint effect of the disk 2' varies depending on the gap between the disk and the tank side plate 8, the size of the hole 6 in the center of the disk, etc., so the disk shape should be selected appropriately taking into consideration the rocking speed, etc. It is desirable to design the In addition, if the structure is configured to completely suppress liquid level fluctuations, the horizontal force due to the increase in fixed water will increase, so for example, the gap between the disk and the tank side plate and the hole in the center of the disk may be enlarged.
Alternatively, as shown in Fig. 5, by providing a hole 7 in one or both of the disks 2, 2'' to release the liquid agitation pressure, or by appropriately combining these holes, the increase in fixed water can be reduced and the liquid level can be reduced. It can also be designed to allow some degree of rocking.
尚上述実施例では円板２，２″をドーナツ状の中空円板
で形成した例を説明したが、勿論中実状円板を使用でき
ることは云うまでもない。In the above embodiment, the disks 2, 2'' are formed of donut-shaped hollow disks, but it goes without saying that solid disks can also be used.
本発明の上述のごとく構成したので、構造簡単かつ安価
でありながら液面揺動防止装置として必要な前述の４つ
の条件をすべて具備せしめることができ、石油タンク等
の安全性の向上に大きく寄与するものである。Since the present invention is constructed as described above, the structure is simple and inexpensive, and it can satisfy all of the above-mentioned four conditions necessary for a liquid level fluctuation prevention device, which greatly contributes to improving the safety of oil tanks, etc. It is something to do.
第１図は本発明装置の１例を示す概略縦断面図、第２図
は同じく平面図、第３図は液面が低下した状態を示す概
略縦断面図、第４図は本発明装置の他の例を示す概略縦
断面図、第５図は円板の変形例を示す部分平面図である
。
１：タンク、２，２′：円板、３：ロツド、４：自在継
手、５：タンク底板、７：抜穴。FIG. 1 is a schematic vertical sectional view showing an example of the device of the present invention, FIG. 2 is a plan view, FIG. 3 is a schematic vertical sectional view showing a state in which the liquid level is lowered, and FIG. 4 is a schematic longitudinal sectional view of the device of the present invention. FIG. 5 is a schematic vertical sectional view showing another example, and a partial plan view showing a modified example of the disk. 1: Tank, 2, 2': Disc, 3: Rod, 4: Universal joint, 5: Tank bottom plate, 7: Hole.
Claims (1)
きをもつて立設された複数本の支承ロッドと該各ロッド
の上端に自在継手を介して連結された浮円板とからなり
、液面レベルの上下変動には上記円板の回転によるロッ
ドの傾きで追随し、地震による液面の非対称揺動に対し
ては抵抗して揺動を防止するようにしたことを特徴とす
るタンク内容液の液面揺動防止装置。 ２ 浮円板と下部円板とを複数本の傾きをもつたロッド
で各々自在継手を介して連結したことを特徴とするタン
ク内容液の液面揺動防止装置。 ３ 浮円板と下部円板の一方又は面方に液揺動圧力解放
用の液抜穴を設けたことを特徴とする特許請求の範囲第
２項記載のタンク内容液の液面揺動防止装置。[Scope of Claims] 1. A plurality of support rods slidably installed on the tank bottom plate at an angle with respect to the vertical direction, and a floating circle connected to the upper end of each rod via a universal joint. It consists of a plate, and the vertical fluctuation of the liquid level is followed by the inclination of the rod due to the rotation of the disk, and it is designed to resist and prevent asymmetric fluctuations of the liquid level due to earthquakes. A liquid level fluctuation prevention device for the liquid in a tank, which is characterized by: 2. A liquid level fluctuation prevention device for liquid in a tank, characterized in that a floating disk and a lower disk are connected by a plurality of inclined rods via universal joints. 3. Preventing liquid level fluctuation of the liquid in the tank as set forth in claim 2, characterized in that a liquid drain hole for releasing liquid fluctuation pressure is provided on one or the side of the floating disk and the lower disk. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55104340A JPS5934592B2 (en) | 1980-07-31 | 1980-07-31 | Liquid level fluctuation prevention device for tank contents |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55104340A JPS5934592B2 (en) | 1980-07-31 | 1980-07-31 | Liquid level fluctuation prevention device for tank contents |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5737583A JPS5737583A (en) | 1982-03-01 |
| JPS5934592B2 true JPS5934592B2 (en) | 1984-08-23 |
Family
ID=14378183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55104340A Expired JPS5934592B2 (en) | 1980-07-31 | 1980-07-31 | Liquid level fluctuation prevention device for tank contents |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5934592B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007246104A (en) * | 2006-03-14 | 2007-09-27 | Mitsui Eng & Shipbuild Co Ltd | In-tank liquid stabilizing device |
| JP2012171672A (en) * | 2011-02-23 | 2012-09-10 | Toshiba Corp | Sloshing prevention device, and tank for liquid storage |
-
1980
- 1980-07-31 JP JP55104340A patent/JPS5934592B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5737583A (en) | 1982-03-01 |
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