JPS6038599B2 - Device to prevent pressure rise between the inner and outer tanks of low-temperature tanks - Google Patents
Device to prevent pressure rise between the inner and outer tanks of low-temperature tanksInfo
- Publication number
- JPS6038599B2 JPS6038599B2 JP2899578A JP2899578A JPS6038599B2 JP S6038599 B2 JPS6038599 B2 JP S6038599B2 JP 2899578 A JP2899578 A JP 2899578A JP 2899578 A JP2899578 A JP 2899578A JP S6038599 B2 JPS6038599 B2 JP S6038599B2
- Authority
- JP
- Japan
- Prior art keywords
- side wall
- tanks
- diaphragm plate
- tank side
- gas passage
- 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
- 239000011491 glass wool Substances 0.000 claims description 7
- 235000019362 perlite Nutrition 0.000 claims description 6
- 239000010451 perlite Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims 1
- 230000035699 permeability Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
【発明の詳細な説明】
本発明は低温タンクの内外槽間圧力上昇防止装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for preventing a pressure rise between an inner and outer tank of a low temperature tank.
ＬＮＧ等の低温タンクは、安全性確保の見地から内槽と
外槽とを有する二重層になっているが、ＬＮＧ等の液が
内槽から内糟と外槽との間に漏洩しここで蒸発すると内
外槽間の圧力は異常に上昇し、外槽が破壊してしまうお
それがあり、そこで外槽に多数の安全弁を設置し圧力を
大気へ逃がすことも考えられるが、内外槽間に充填され
た保冷材たる／・ぐ−ライトが安全弁作動時にガスと一
緒に大気中へ飛散するおそれがあって実現には種々解決
すべき点があった。Low-temperature tanks for LNG, etc., are double-layered with an inner tank and an outer tank to ensure safety, but liquid such as LNG leaks from the inner tank between the inner tank and the outer tank. If evaporation occurs, the pressure between the inner and outer tanks will rise abnormally and there is a risk that the outer tank will be destroyed.Therefore, it is possible to install multiple safety valves in the outer tank to release the pressure to the atmosphere, but if the pressure is not filled between the inner and outer tanks, When the safety valve is activated, there is a risk that the cool insulating material, G-light, will be scattered into the atmosphere along with the gas, and there were various issues that needed to be resolved in order to realize this.
本発明は上述の観点に鑑みなしたもので、その要旨とす
るところは、内槽側壁と外槽側壁との間に内槽側壁を包
囲するようダイヤフラムプレートを配設すると共に外槽
側壁とダイヤフラムプレートとの間に保冷用のパーラィ
トを充填せしめ、前記ダイヤフラムプレートと内槽側壁
との間にガス通路を形成し、ダイヤフラムプレートを円
周方向に所要間隔で分割し、分割面にグラスウールを挟
んで該ダイヤフラムプレートを連結し、前記ガス通路の
上端に安全弁を取付けたことを特徴とするものである。The present invention has been made in view of the above-mentioned viewpoints, and its gist is that a diaphragm plate is disposed between the inner tank side wall and the outer tank side wall so as to surround the inner tank side wall, and the outer tank side wall and the diaphragm plate are disposed between the inner tank side wall and the outer tank side wall. Perlite for cold insulation is filled between the diaphragm plate and the inner tank side wall, a gas passage is formed between the diaphragm plate and the inner tank side wall, the diaphragm plate is divided at required intervals in the circumferential direction, and glass wool is sandwiched between the divided surfaces. The diaphragm plates are connected to each other, and a safety valve is attached to the upper end of the gas passage.
以下本発明の実施例を図面に基いて説明する。図中１は
内槽側壁、２は外槽側壁であり、該側壁１と２で形成さ
れた空間部には、ダイヤフラムプレート３が内槽側壁１
を包囲するように取付けられ、ダイヤフラムプレート３
と内槽側壁１との間にガス通路４が形成されている。ダ
イヤフラムプレート３は完全な密閉状態ではなく、第２
図に示すごとく円周方向に所要間隔で分割されており、
分割面は通気性のよいグラスウール５を介して相互に連
結されている。Embodiments of the present invention will be described below based on the drawings. In the figure, 1 is the inner tank side wall, 2 is the outer tank side wall, and in the space formed by the side walls 1 and 2, a diaphragm plate 3 is installed on the inner tank side wall.
diaphragm plate 3.
A gas passage 4 is formed between the inner tank side wall 1 and the inner tank side wall 1 . The diaphragm plate 3 is not completely sealed, and the second
As shown in the figure, it is divided at required intervals in the circumferential direction.
The divided surfaces are interconnected via glass wool 5 with good air permeability.
又ダイヤフラムプレート３の上部に設けたガス通路６に
は、通気性のよいグラスウール７が充填されており、該
ガス通路７の外槽天井より突出した部分には、安全弁８
が取付けられている。なお図中９は外槽側壁２とダイヤ
フラムプレート３との間に充填した保袷用のパーライト
である。内槽から漏洩したＬＮＧ等が内槽側壁１と外槽
側壁２との間に流入しここで蒸発すると、その一部はダ
イヤフラムプレート３と内槽側壁１との間のガス通路４
を通ってガス通路６に入る。A gas passage 6 provided at the upper part of the diaphragm plate 3 is filled with glass wool 7 with good air permeability, and a safety valve 8 is installed in the part of the gas passage 7 that protrudes from the ceiling of the outer tank.
is installed. In addition, 9 in the figure is perlite for protection filled between the outer tank side wall 2 and the diaphragm plate 3. When LNG, etc. leaked from the inner tank flows between the inner tank side wall 1 and the outer tank side wall 2 and evaporates there, a part of it flows into the gas passage 4 between the diaphragm plate 3 and the inner tank side wall 1.
through which it enters the gas passage 6.
一方外槽側壁２とダイヤフラムプレート３との間に入っ
たＬＮＧ等が蒸発すると、そのガスは保冷用のパーラィ
ト９の間を通って上昇しようとするが、抵抗が大きいた
めなかなか上昇し得ず、抵抗の小さいグラスウール５の
部分からガス通路４内に入り、ガス通路６へ流入する。
ガス通路４，６内の圧力が安全弁８の設定圧力以上にな
れば安全弁８が開き、ガスは外部へ排出されるから、内
外槽間の圧力を常に低く押えることができる。On the other hand, when the LNG etc. that have entered between the outer tank side wall 2 and the diaphragm plate 3 evaporate, the gas tries to rise through the space between the perlite 9 for cooling, but it cannot rise easily because of the large resistance. The glass wool 5 enters the gas passage 4 from the portion of the glass wool 5 with low resistance and flows into the gas passage 6.
When the pressure inside the gas passages 4 and 6 exceeds the set pressure of the safety valve 8, the safety valve 8 opens and the gas is discharged to the outside, so that the pressure between the inner and outer tanks can be kept low at all times.
又グラスウ−ル５，７を設け、フィルターのような役割
をさせているため、安全弁８の作動時にパーラィト９が
外部へ噴出することはない。なお本発明は上述の実施例
に限定されるものではなく、本発明の要旨を逸脱しない
範囲内で種々変更を加え得ること、等は勿論である。Furthermore, since the glass wools 5 and 7 are provided to act as filters, the perlite 9 will not be spewed out to the outside when the safety valve 8 is activated. Note that the present invention is not limited to the above-described embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.
本発明の低温タンクの内外槽間圧力上昇防止装置は、上
述のごとき構成であるから、内外槽間にＬＮＧ等が漏洩
しても蒸発ガスを容易に外部へ排出することができ、従
って安全性が著しく上昇する。Since the device for preventing pressure rise between the inner and outer tanks of a low-temperature tank of the present invention has the above-described configuration, even if LNG or the like leaks between the inner and outer tanks, the evaporated gas can be easily discharged to the outside, thereby improving safety. increases significantly.
第１図は本発明の実施例の説明図、第２図は第１図のＵ
−０方向矢視図である。
図中１は内槽側壁、２は外槽側壁、３はダイヤフラムプ
レート、４，６はガス通路、５，７はグラスウール、８
は安全弁、９は保冷用のパーラィトを示す。
第１図
第２図Fig. 1 is an explanatory diagram of an embodiment of the present invention, and Fig. 2 is an illustration of the U of Fig. 1.
-0 direction arrow view. In the figure, 1 is the inner tank side wall, 2 is the outer tank side wall, 3 is the diaphragm plate, 4 and 6 are gas passages, 5 and 7 are glass wool, and 8
9 indicates a safety valve, and 9 indicates perlite for cold storage. Figure 1 Figure 2
Claims (1)
うダイヤフラムプレートを配設すると共に外槽側壁とダ
イヤフラムプレートとの間に保冷用のパーライトを充填
せしめ、前記ダイヤフラムプレートと内槽側壁との間に
ガス通路を形成し、ダイヤフラムプレートを円周方向に
所要間隔で分割し、分割面にグラスウールを挟んで該ダ
イヤフラムプレートを連結し、前記ガス通路の上端に安
全弁を取付けたことを特徴とする低温タンクの内外槽間
圧力上昇防止装置。1. A diaphragm plate is disposed between the inner tank side wall and the outer tank side wall so as to surround the inner tank side wall, and perlite for cooling is filled between the outer tank side wall and the diaphragm plate, and the diaphragm plate and the inner tank are A gas passage is formed between the gas passage and the side wall, the diaphragm plate is divided at required intervals in the circumferential direction, the diaphragm plate is connected with glass wool sandwiched between the divided surfaces, and a safety valve is attached to the upper end of the gas passage. Features: A pressure rise prevention device between the inner and outer tanks of low-temperature tanks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2899578A JPS6038599B2 (en) | 1978-03-14 | 1978-03-14 | Device to prevent pressure rise between the inner and outer tanks of low-temperature tanks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2899578A JPS6038599B2 (en) | 1978-03-14 | 1978-03-14 | Device to prevent pressure rise between the inner and outer tanks of low-temperature tanks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54121416A JPS54121416A (en) | 1979-09-20 |
| JPS6038599B2 true JPS6038599B2 (en) | 1985-09-02 |
Family
ID=12263985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2899578A Expired JPS6038599B2 (en) | 1978-03-14 | 1978-03-14 | Device to prevent pressure rise between the inner and outer tanks of low-temperature tanks |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6038599B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4938549B2 (en) * | 2007-05-15 | 2012-05-23 | 株式会社クボタ | Work vehicle grill mounting structure |
-
1978
- 1978-03-14 JP JP2899578A patent/JPS6038599B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54121416A (en) | 1979-09-20 |
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