JPH0136799Y2 - - Google Patents
Info
- Publication number
- JPH0136799Y2 JPH0136799Y2 JP8107485U JP8107485U JPH0136799Y2 JP H0136799 Y2 JPH0136799 Y2 JP H0136799Y2 JP 8107485 U JP8107485 U JP 8107485U JP 8107485 U JP8107485 U JP 8107485U JP H0136799 Y2 JPH0136799 Y2 JP H0136799Y2
- Authority
- JP
- Japan
- Prior art keywords
- floating roof
- storage tank
- center
- frame
- sloshing
- 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
- 239000007788 liquid Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案は、原油類その他の液体を貯蔵する大
型の浮屋根式貯槽におけるスロツシング防止装置
の改良に関するものである。[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to an improvement of a sloshing prevention device in a large floating roof type storage tank for storing crude oil and other liquids.
（従来の技術）
原油類を貯蔵する浮屋根式の貯槽においては、
地震や台風などに直面した場合、液面上の浮屋根
が、自由液面の揺動に共振する。そして、場合に
よつては、第３図で示すように貯液を溢出させた
り、さらには浮屋根自体を貯槽上端口縁に衝突さ
せ、貯槽自体の損壊を引き起こす原因ともなりか
ねない。(Prior art) In floating roof storage tanks for storing crude oil,
When faced with an earthquake or typhoon, the floating roof above the liquid level resonates with the fluctuations of the free liquid level. In some cases, the stored liquid may overflow as shown in FIG. 3, or the floating roof itself may collide with the upper edge of the tank, causing damage to the tank itself.
すなわち、スロツシングによる貯槽液の溢出と
貯槽本体の損壊である。 That is, the storage tank liquid overflows due to sloshing and the storage tank body is damaged.
（考案が解決しようとする問題点）
そこで、このような危険を回避するため、従来
は、貯槽本体の周壁高さをより高くとり、スロツ
シングによる溢流を防止するとか、浮屋根下面の
自由液面を小さく分割し、自由液面の揺動を拘束
するとか、さらには制水板を浮屋根下面に組み付
けて、液面揺動のエネルギーを分散させるとか、
いろいろな工夫がなされている。(Problem that the invention aims to solve) Therefore, in order to avoid such a danger, conventional methods have been to increase the height of the peripheral wall of the storage tank body to prevent overflow due to sloshing, or to prevent free liquid from under the floating roof. We can divide the surface into smaller parts to restrain the fluctuation of the free liquid level, or even install a water control plate on the underside of the floating roof to disperse the energy of the fluctuation of the liquid level.
Various efforts have been made.
しかし、残念ながら確立された技術手段はまだ
ない。 However, unfortunately, there are no established technical means yet.
（問題点を解決するための手段）
本考案は、液面揺動のエネルギーを貯槽内の旋
回流に変換し、すなわち従来のように分散や拘束
によらずして、スロツシング現象を抑制すること
を狙つたものである。(Means for solving the problem) The present invention converts the energy of liquid level fluctuation into a swirling flow in the storage tank, that is, suppresses the sloshing phenomenon without dispersion or restraint as in the past. It was aimed at
その考案の要旨とするところは、浮屋根の下面
に、その浮屋根の中心を軸として回転できるフレ
ームを取り付け、さらにそのフレームに浮屋根の
中心を軸とする旋回羽根を複数枚、組み付けたも
のである。 The gist of the idea is that a frame that can rotate around the center of the floating roof is attached to the underside of the floating roof, and multiple swing blades that are centered around the center of the floating roof are attached to the frame. It is.
（作用）
本考案は、以上のような構成となつているか
ら、地震や台風により浮屋根が揺動し、浮屋根直
下の自由液面に波動が生じると、その波動は、浮
屋根の中心を軸とした旋回羽根に当たる。そし
て、その波動エネルギーは、貯槽本体を中心とし
た旋回流となり、いわゆる水平波動として浮屋根
との共振増幅現象、すなわちスロツシング現象が
抑制される。(Function) Since the present invention has the above-described configuration, when the floating roof shakes due to an earthquake or typhoon and waves are generated on the free liquid surface directly below the floating roof, the waves will be transmitted to the center of the floating roof. It corresponds to a swirling blade centered on . The wave energy becomes a swirling flow around the storage tank body, and the resonance amplification phenomenon with the floating roof, that is, the sloshing phenomenon, is suppressed as a so-called horizontal wave motion.
とくに本考案装置においては、旋回羽根を取り
付けた円形のフレームが浮屋根の中心を軸として
回転可能となつているので、水平波動が旋回羽根
に当つた場合のエネルギーの方向変換がなだらか
に行なわれる。 In particular, in the device of the present invention, the circular frame to which the swirling vanes are attached is rotatable around the center of the floating roof, so that when a horizontal wave hits the swirling vanes, the direction of energy changes smoothly. .
すなわち、液面揺動における液動圧の変化がな
だらかで、しかし、貯蔵液の溢出はもちろん液動
圧の負荷による貯槽本体周壁の座屈をともなう損
壊等は防止される。 That is, the change in liquid dynamic pressure due to liquid level fluctuation is gradual, but not only overflow of the stored liquid but also damage caused by buckling of the peripheral wall of the storage tank body due to the load of liquid dynamic pressure is prevented.
いずれにしても本考案による装置は、従来の制
水板による波動エネルギーの拘束や抑制方法に比
較し、地震や台風などによつて生じる波動エネル
ギーを旋回流になだらかに方向変換させることが
できるもので、スロツシング防止装置として、き
わめて合理的な構成をなすものである。 In any case, the device according to the present invention can gently change the direction of wave energy generated by earthquakes, typhoons, etc. into swirling flow, compared to the conventional method of restraining and suppressing wave energy using water control plates. This is an extremely rational structure as an anti-sloshing device.
（実施例）
図に基づいて説明すると、第３図は、いわゆる
スロツシング現象による浮屋根の揺動を示し、１
は貯槽本体、２は浮屋根である。(Example) To explain based on the figures, Fig. 3 shows the shaking of a floating roof due to the so-called sloshing phenomenon,
2 is the storage tank body, and 2 is the floating roof.
第１図および第２図が本考案の実施例で、まず
第１図は、浮屋根２の平面図で、３は浮屋根２を
構成するデツキプレート、４はポンツーンであ
る。 1 and 2 show an embodiment of the present invention. First, FIG. 1 is a plan view of a floating roof 2, 3 is a deck plate constituting the floating roof 2, and 4 is a pontoon.
５は浮屋根２の下面に、浮屋根２の中心を軸と
して回転できるように組み付けたフレームであ
る。 A frame 5 is attached to the lower surface of the floating roof 2 so as to be rotatable around the center of the floating roof 2.
６は、このフレーム５に取り付けた旋回羽根
で、浮屋根２の中心を軸として同一旋回方向……
時計回わり方向に中心部と外周部との二重構造で
取り付けてある。なお、７は、前記フレーム５の
外周と浮屋根２下面外周との間を連係し、前記フ
レーム５の回転時におけるガイドの役割を果すガ
イドリングである。 Reference numeral 6 denotes a rotating blade attached to this frame 5, which rotates in the same direction around the center of the floating roof 2...
It is installed in a clockwise direction with a double structure consisting of a center part and an outer part. Reference numeral 7 denotes a guide ring that links the outer periphery of the frame 5 and the outer periphery of the lower surface of the floating roof 2, and serves as a guide when the frame 5 rotates.
（考案の効果）
以上のような装置構成であるため、従来の区画
板ないし制水板方式に比較し、スロツシングの防
止効果が高く、また急激な加振による波動に対し
ても、きわめてなめらかに対応できる効果をも
つ。(Effects of the invention) Because of the device configuration described above, it is more effective in preventing sloshing than conventional partition plate or water control plate systems, and is extremely smooth against waves caused by sudden vibrations. It has corresponding effects.
第１図は本考案に係るスロツシング防止装置を
組み付けた浮屋根の平面図、第２図は同じく側面
図、第３図はスロツシング現象を示す浮屋根式貯
槽の断面図である。
１……浮子屋根式貯槽本体、２……浮屋根、３
……デツキプレート、４……ポンツーン、５……
フレーム、６……旋回羽根、７……ガイドリン
グ。
FIG. 1 is a plan view of a floating roof equipped with a sloshing prevention device according to the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a sectional view of a floating roof type storage tank showing the sloshing phenomenon. 1... Floating roof type storage tank body, 2... Floating roof, 3
...Deck plate, 4...Pontoon, 5...
Frame, 6...Swivel vane, 7...Guide ring.
Claims (1)
できる円形のフレームを取り付け、このフレーム
に同じく浮屋根の中心を軸とする旋回羽根の複数
枚を組み付けたことを要旨とする浮屋根式貯槽に
おけるスロツシング防止装置。 A floating roof type storage tank in which a circular frame that can rotate around the center of the floating roof is attached to the underside of the floating roof, and a plurality of rotating blades that also rotate around the center of the floating roof are attached to this frame. Anti-sloshing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8107485U JPH0136799Y2 (en) | 1985-05-31 | 1985-05-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8107485U JPH0136799Y2 (en) | 1985-05-31 | 1985-05-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61196996U JPS61196996U (en) | 1986-12-09 |
| JPH0136799Y2 true JPH0136799Y2 (en) | 1989-11-08 |
Family
ID=30627520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8107485U Expired JPH0136799Y2 (en) | 1985-05-31 | 1985-05-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0136799Y2 (en) |
-
1985
- 1985-05-31 JP JP8107485U patent/JPH0136799Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61196996U (en) | 1986-12-09 |
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