JPH0243957B2 - CHIKASHIKITEIONCHOSONOTSURIDETSUKISHIJIHOHO - Google Patents
CHIKASHIKITEIONCHOSONOTSURIDETSUKISHIJIHOHOInfo
- Publication number
- JPH0243957B2 JPH0243957B2 JP4309685A JP4309685A JPH0243957B2 JP H0243957 B2 JPH0243957 B2 JP H0243957B2 JP 4309685 A JP4309685 A JP 4309685A JP 4309685 A JP4309685 A JP 4309685A JP H0243957 B2 JPH0243957 B2 JP H0243957B2
- Authority
- JP
- Japan
- Prior art keywords
- hanging
- deck
- hanging deck
- negative pressure
- roof
- 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 - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 8
- 239000000725 suspension Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 4
- 230000008439 repair process Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/022—Land-based bulk storage containers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0119—Shape cylindrical with flat end-piece
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/052—Size large (>1000 m3)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/01—Reinforcing or suspension means
- F17C2203/014—Suspension means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0142—Applications for fluid transport or storage placed underground
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、地下式低温貯槽の吊りデツキ支持方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for supporting a hanging deck for an underground low temperature storage tank.
第４，５図は地下式低温貯槽の吊りデツキを支
持する方法の一般的な例を示すもので、タンク側
壁１上に側胴板２を介して支持された屋根３に対
し、半径方向及び周方向に多数垂直に配した吊り
ロツド４を介して吊りデツキ５を吊り下げ支持す
るようにしている。又、前記各吊りロツド４は、
吊りデツキ５の荷重を支え且つ地震時等における
衝撃的な変動荷重に対しても耐え得る十分な強度
を備えている。
Figures 4 and 5 show a general example of a method for supporting a hanging deck of an underground low-temperature storage tank. A hanging deck 5 is suspended and supported via a large number of hanging rods 4 arranged vertically in the circumferential direction. Moreover, each of the above-mentioned hanging rods 4 is
It has sufficient strength to support the load of the hanging deck 5 and to withstand shocking fluctuation loads during earthquakes and the like.
しかし、上記したような貯槽においては、地震
発生時における低温液体６のスロツジングによつ
て吊りデツキ５の外周下面所要範囲に低温液体６
が押し上げるように接し、続いて接していた低温
液体６が下降しようとする際に吊りデツキ５下面
に負圧状態を形成することにより大きな力Ｆで屋
根３を下方に引張ることになり、よつて第５図に
示すように屋根３が座屈してしまうような危険が
あつた。また、上記したように屋根３が座屈した
ような場合、その補修は非常に大変となるばかり
でなく、屋根３に取付けて支持されているトツプ
フイードノズル等の損傷及びそれに伴う屋根３の
シール機能の喪失等といつた問題を生じる危険を
有していた。
However, in the above-mentioned storage tank, the low temperature liquid 6 is deposited in a required range on the lower surface of the hanging deck 5 due to sloshing of the low temperature liquid 6 when an earthquake occurs.
When the low-temperature liquid 6 that was in contact with the lower surface of the hanging deck 5 tries to descend, a negative pressure is formed on the lower surface of the hanging deck 5, and the roof 3 is pulled downward by a large force F. As shown in FIG. 5, there was a risk that the roof 3 would buckle. In addition, if the roof 3 buckles as described above, it will not only be very difficult to repair it, but it will also cause damage to the top feed nozzle, etc. that is attached and supported by the roof 3, and the resulting damage to the roof 3. There was a risk of problems such as loss of sealing function.
本発明は、こうした従来の問題点に着目してな
したもので、低温液体のスロツジングによつて吊
りデツキの変形によつてそれに対処するようにし
て屋根の健全性を確保することを目的としてい
る。 The present invention was made in view of these conventional problems, and aims to ensure the soundness of the roof by deforming the hanging deck through sloshing of low-temperature liquid. .
本発明は、上記技術的課題を解決しようとした
もので、地下式低温貯槽の屋根に、吊りロツドに
より吊りデツキを下げて支持する吊りデツキの支
持方法において、低温液体のスロツジングによる
負圧発生時に吊りデツキの外周部に作用する所要
の負圧引張り力によつて破断する強度の吊りロツ
ドを介して吊りデツキの外周部の所要範囲を吊り
下げ、且つ前記吊りデツキの内側を前記負圧発生
時にも吊りデツキの重量を支持できる強度の吊り
ロツドにより吊り下げることを特徴とする地下式
低温貯槽の吊りデツキ支持方法、に係るものであ
る。
The present invention is an attempt to solve the above-mentioned technical problem, and is a method for supporting a hanging deck in which the hanging deck is lowered and supported by a hanging rod on the roof of an underground low-temperature storage tank. A required range of the outer periphery of the hanging deck is suspended via a hanging rod strong enough to break due to a required negative pressure tensile force acting on the outer periphery of the hanging deck, and the inside of the hanging deck is suspended when the negative pressure is generated. This invention also relates to a method for supporting a hanging deck for an underground low-temperature storage tank, which is characterized in that the hanging deck is suspended by a hanging rod strong enough to support the weight of the hanging deck.
従つて、本発明では、吊りデツキをを支持する
吊りロツドの強度を外側と内側で変えており、低
温液体のスロツジングによる負圧発生時に外側の
吊りロツドが破断して吊りデツキ外周部が変形す
る。
Therefore, in the present invention, the strength of the hanging rods supporting the hanging deck is different on the outside and inside, and when negative pressure is generated due to sloshing of low-temperature liquid, the outside hanging rod breaks and the outer peripheral part of the hanging deck is deformed. .
以下本発明の実施例を図面を参照して説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.
第１図は、吊りデツキ５の平面を示したもの
で、通常の貯液量をもつ地下式低温貯槽におい
て、地震等によつて低温液体６のスロツジングが
発生した場合、低温液体６が吊りデツキ５の底面
に接して負圧を発生する範囲７（斜線を付した部
分）は、吊りデツキ５の外周縁で、しかも吊りデ
ツキ５の直径γに対して約1/2γ前後の範囲であ
ることが判明した。 FIG. 1 shows the plane of the hanging deck 5. In an underground cryogenic storage tank with a normal storage volume, if sloshing of the cryogenic liquid 6 occurs due to an earthquake or the like, the cryogenic liquid 6 will flow onto the hanging deck. The area 7 (shaded area) where negative pressure is generated in contact with the bottom of the hanging deck 5 is the outer periphery of the hanging deck 5, and should be approximately 1/2 γ of the diameter γ of the hanging deck 5. There was found.
このため、前記負圧発生範囲７における吊りロ
ツド４ａとそれ以外の内側の吊りロツド４ｂの強
度に差を持たせ、前記負圧発生範囲７の吊りロツ
ド４ａは低温液体６のスロツジングによつて吊り
デツキ５に或る大きさ以上の負圧引張り力が作用
した場合に切断されるようにする。 For this reason, a difference is made in strength between the suspension rod 4a in the negative pressure generation range 7 and the other inner suspension rod 4b, and the suspension rod 4a in the negative pressure generation range 7 is suspended by slodging the low temperature liquid 6. The deck 5 is cut when a negative pressure tensile force of a certain magnitude or more is applied.
第３図は吊りロツド４の一例を示すもので、上
端を取付けボルト８，９により屋根３に取付けた
上部ロツド１０と、下端を取付けボルト１１によ
り吊りデツキ５に取付け且つターンバツクル１２
を有した下部ロツド１３とを連結ボルト１４によ
り中間部で連結した構成を有している。 FIG. 3 shows an example of the hanging rod 4. The upper rod 10 has its upper end attached to the roof 3 with attachment bolts 8 and 9, and the lower end is attached to the suspension deck 5 with attachment bolts 11 and a turnbuckle 12.
It has a structure in which a lower rod 13 having a diameter is connected to the lower rod 13 at an intermediate portion by a connecting bolt 14.
上記構成において、吊りデツキ５に屋根３を座
屈させてしまうような過度の下方への引張り力Ｆ
が作用した場合にその荷重によつてその部分にお
ける吊りロツド４ａにおける前記連結ボルト１４
が剪断破壊を起こすように、該連結ボルト１４の
材質、太さを選定する。 In the above configuration, an excessive downward tensile force F that causes the roof 3 to buckle on the hanging deck 5
When a
The material and thickness of the connecting bolt 14 are selected so that shear failure occurs.
又、残りの範囲の内側の吊りロツド４ｂは、前
記外側の吊りロツド４ａのすべてが破断して屋根
３と吊りデツキ５の連結が断たれても、吊りデツ
キ５の重量を充分に支持できる強度を備えてい
る。尚、図示の場合、着液によつて吊りデツキを
介して主に負圧力が作用するのは外周の３列の吊
りロツドであるので、この３列のみを強度的に弱
い構造としている。 In addition, the inner suspension rods 4b in the remaining range have sufficient strength to support the weight of the suspension deck 5 even if all of the outer suspension rods 4a break and the connection between the roof 3 and the suspension deck 5 is severed. It is equipped with In the illustrated case, it is the three rows of hanging rods on the outer periphery that are mainly subjected to negative pressure through the hanging deck due to the liquid, so only these three rows have a weak structure in terms of strength.
上記において、地震による低温液体６のスロツ
ジングにより、前記第４図に示すように、吊りデ
ツキ５に負圧力による下方への大きな引張り力Ｆ
が作用すると、その部分の吊りロツド４ａの連結
ボルト１４が剪断破壊され、更に吊りデツキ５
は、上記引張り力Ｆにより第２図に示すように変
形される。これにより屋根３は変形を生じること
なく保護される。又、上記吊りロツド４ａの剪断
が生じても、大きな強度をもつ内側の吊りロツド
４ｂによつて吊りデツキ５は安全に支持される。 In the above, due to the sloshing of the low-temperature liquid 6 due to the earthquake, a large downward tensile force F due to negative pressure is applied to the hanging deck 5, as shown in FIG.
When this occurs, the connecting bolt 14 of the hanging rod 4a in that area is sheared and broken, and the hanging deck 5 is further damaged.
is deformed by the tensile force F as shown in FIG. This protects the roof 3 without causing deformation. Furthermore, even if the suspension rod 4a is sheared, the suspension deck 5 is safely supported by the inner suspension rod 4b, which has great strength.
尚、本発明は上記実施例にのみ限定されるもの
ではなく、吊りロツドを破断させる個所は種々選
定し得ること、その他本発明の要旨を逸脱しない
範囲内において種々変更を加え得ること、等は勿
論である。 It should be noted that the present invention is not limited to the above-mentioned embodiments, and that the location at which the suspension rod is broken may be selected from various locations, and that various other changes may be made without departing from the gist of the present invention. Of course.
上記したように、本発明の地下式低温貯槽の吊
りデツキ支持方法によれば、吊りデツキを吊り下
げて支持する吊りロツドの強度を外側と内側とで
変え、低温液体のスロツジングによる負圧発生時
に外側の吊りロツドを破断させて吊りデツキを変
形させることにより、屋根の健全性を確保して、
安全性の向上、補修の容易化を図れる優れた効果
を奏し得る。
As described above, according to the method for supporting a hanging deck for an underground low-temperature storage tank of the present invention, the strength of the hanging rod that suspends and supports the hanging deck is changed between the outside and the inside, so that when negative pressure is generated due to slodging of low-temperature liquid, By breaking the outside hanging rods and deforming the hanging deck, we ensure the soundness of the roof.
It can have excellent effects of improving safety and making repairs easier.
第１図は本発明を実施する地下式低温貯槽にお
ける吊りデツキの平面図、第２図は本発明の作用
を示す切断側面図、第３図は吊りロツドの構成例
を示す詳細図、第４図は吊りデツキ支持方法の一
般例を示す切断側面図、第５図は従来の方法にお
ける問題点を明瞭にするための説明図である。
１はタンク側壁、３は屋根、４ａは外側吊りロ
ツド、４ｂは内側吊りロツド、５は吊りデツキ、
６は低温液体、７は負圧発生範囲、１４は連結ボ
ルトを示す。
Fig. 1 is a plan view of a hanging deck in an underground low temperature storage tank in which the present invention is implemented, Fig. 2 is a cutaway side view showing the effect of the present invention, Fig. 3 is a detailed view showing an example of the structure of the hanging rod, and Fig. 4 The figure is a cutaway side view showing a general example of a hanging deck support method, and FIG. 5 is an explanatory diagram for clarifying problems in the conventional method. 1 is the tank side wall, 3 is the roof, 4a is the outside hanging rod, 4b is the inside hanging rod, 5 is the hanging deck,
Reference numeral 6 indicates a low temperature liquid, 7 indicates a negative pressure generation range, and 14 indicates a connecting bolt.
Claims (1)
吊りデツキを吊り下げて支持する吊りデツキの支
持方法において、低温液体のスロツジングによる
負圧発生時に吊りデツキの外周部に作用する所要
の負圧引張り力によつて破断する強度の吊りロツ
ドを介して吊りデツキの外周部の所要範囲を吊り
下げ、且つ前記吊りデツキの内側を前記負圧発生
時にも吊りデツキの重量を支持できる強度の吊り
ロツドにより吊り下げることを特徴とする地下式
低温貯槽の吊りデツキ支持方法。1. In a method of supporting a hanging deck in which the hanging deck is suspended and supported by hanging rods on the roof of an underground cryogenic storage tank, the required negative pressure tensile force that acts on the outer periphery of the hanging deck when negative pressure is generated due to slodging of low-temperature liquid. The necessary range of the outer circumference of the hanging deck is suspended through a hanging rod strong enough to break when the deck is broken, and the inside of the hanging deck is suspended by a hanging rod strong enough to support the weight of the hanging deck even when the negative pressure is generated. A method for supporting a hanging deck for an underground low-temperature storage tank, characterized by lowering the deck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4309685A JPH0243957B2 (en) | 1985-03-05 | 1985-03-05 | CHIKASHIKITEIONCHOSONOTSURIDETSUKISHIJIHOHO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4309685A JPH0243957B2 (en) | 1985-03-05 | 1985-03-05 | CHIKASHIKITEIONCHOSONOTSURIDETSUKISHIJIHOHO |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61201995A JPS61201995A (en) | 1986-09-06 |
| JPH0243957B2 true JPH0243957B2 (en) | 1990-10-02 |
Family
ID=12654301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4309685A Expired - Lifetime JPH0243957B2 (en) | 1985-03-05 | 1985-03-05 | CHIKASHIKITEIONCHOSONOTSURIDETSUKISHIJIHOHO |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0243957B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0668658U (en) * | 1993-03-10 | 1994-09-27 | 信之 小畑 | Vacuum cleaner pipes and nozzles |
-
1985
- 1985-03-05 JP JP4309685A patent/JPH0243957B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0668658U (en) * | 1993-03-10 | 1994-09-27 | 信之 小畑 | Vacuum cleaner pipes and nozzles |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61201995A (en) | 1986-09-06 |
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