JP3005868B2 - Gas release method and gas release structure of low temperature storage tank safety valve - Google Patents
Gas release method and gas release structure of low temperature storage tank safety valveInfo
- Publication number
- JP3005868B2 JP3005868B2 JP2164146A JP16414690A JP3005868B2 JP 3005868 B2 JP3005868 B2 JP 3005868B2 JP 2164146 A JP2164146 A JP 2164146A JP 16414690 A JP16414690 A JP 16414690A JP 3005868 B2 JP3005868 B2 JP 3005868B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- low
- steam
- pipe
- temperature
- 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 - Fee Related
Links
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は、LPG、LNG、エチレン等の低温液化ガスを
貯蔵する低温貯槽の屋根部に設ける、貯槽内部のガス圧
力が上がった場合に貯槽の破壊事故等を防止するため
に、内部ガスを大気に放散する安全弁からのガス放散方
法とその構造に関するものである。The present invention relates to a low-temperature storage tank for storing low-temperature liquefied gas such as LPG, LNG, ethylene, etc., which is provided on the roof of the storage tank when the gas pressure inside the storage tank increases. The present invention relates to a method and a structure for discharging gas from a safety valve that releases internal gas to the atmosphere in order to prevent a destruction accident or the like.
（従来の技術） 低温液化ガスを貯蔵する低温貯槽は、貯槽内でガス化
したガスを引き抜き圧縮冷却再液化して、又貯槽に戻し
て、常に貯槽内ガス層の圧力が高くならないようにかつ
一定圧力以下に保つように管理されている。しかしなが
ら、このガス層圧力の管理がうまくいかずに貯層内部圧
力が急激に上昇した場合の異常時には、低温貯槽の屋根
を破壊して低温液化ガスを噴出すること等により大きな
災害を引き起すことが考えられる。(Prior art) A low-temperature storage tank for storing a low-temperature liquefied gas draws out gasified gas in the storage tank, compresses and cools it again, and returns it to the storage tank so that the pressure of the gas layer in the storage tank does not always increase. It is managed to keep it below a certain pressure. However, in the event that the internal pressure of the reservoir suddenly rises due to poor management of the gas layer pressure, a large disaster may be caused by destroying the roof of the low-temperature storage tank and ejecting the low-temperature liquefied gas. Can be considered.
そこで、安全対策の一環として、従来から低温貯槽の
屋根には安全弁が取り付けられ、貯槽内部のガス圧が所
定圧力以上になる異常時にはこの安全弁を開放してガス
を大気に放散するようになっている。Therefore, as part of safety measures, a safety valve has conventionally been installed on the roof of the low-temperature storage tank, and when the gas pressure inside the storage tank exceeds a predetermined pressure, this safety valve is opened to release gas to the atmosphere. I have.
従来の低温貯槽安全弁の設置状態の一例を、第５図に
示す。FIG. 5 shows an example of the installation state of a conventional low-temperature storage tank safety valve.
安全弁22は、低温貯槽屋根21の上部に直立するパイプ
の元バルブ23の上に設けられ、パイプの下端は図示省略
したが屋根21を貫通して貯槽内部のガス層に至ってい
る。安全弁22に連繋した導管24は一般的には水平方向か
ら垂直方向そして水平方向にそれぞれ配向するような形
状をしており、その先端のガス出口25が開口している。
従って、安全弁からの噴出ガスはガス出口25から直接大
気中にガスの噴出圧力によって放出されるようになって
いる。The safety valve 22 is provided on an original valve 23 of a pipe which stands upright on the upper part of the low-temperature storage tank roof 21, and a lower end of the pipe penetrates the roof 21 to reach a gas layer inside the storage tank, although not shown. The conduit 24 connected to the safety valve 22 is generally shaped so as to be oriented from a horizontal direction to a vertical direction and a horizontal direction, respectively, and has a gas outlet 25 at the distal end thereof.
Therefore, the gas ejected from the safety valve is released directly from the gas outlet 25 into the atmosphere by the gas ejection pressure.
（発明の解決しようとする課題） 従来の低温貯槽安全弁は、貯槽内圧力が上昇してガス
が噴出した場合、導管のガス出口から放出されるガスの
大気中への拡散が充分でなく、導管のガス出口から大気
中に放出されたガスは貯槽周辺に滞留して、火災の危険
や人体への安全面からも危険となる心配があった。ま
た、大気より冷たく重い噴出低温ガスを大気中に遠くに
広く放散させ、充分に拡散希釈して無害化させることが
難しいという問題があった。また、この噴出して急激に
膨張するガスは、低温貯槽の屋根部に設けた安全弁に連
繋する導管出口の周囲や貯槽の付近を冷却して、大気中
の湿気や水分の凝結、雨水等を凍結させるため、安全弁
の弁作動を阻害するおそれや、凍結災害を発生させる心
配があった。(Problems to be Solved by the Invention) In the conventional low-temperature storage tank safety valve, when the pressure in the storage tank rises and gas is ejected, the gas discharged from the gas outlet of the conduit is not sufficiently diffused into the atmosphere, and the conduit The gas discharged from the gas outlet into the atmosphere stays in the vicinity of the storage tank, and there is a concern that it may be dangerous from the viewpoint of fire hazard and human safety. Further, there is a problem that it is difficult to diffuse a low-temperature gas ejected, which is colder and heavier than the atmosphere, far and widely into the atmosphere and sufficiently diffuse and dilute it to make the gas harmless. In addition, the gas that gushes and expands rapidly cools around the outlet of the conduit connected to the safety valve provided on the roof of the low-temperature storage tank and the vicinity of the storage tank, and condenses moisture and moisture in the atmosphere, rainwater, etc. Because of the freezing, there was a risk that the valve operation of the safety valve would be hindered, and there was a fear that a freezing disaster would occur.
この発明は、上述の問題点を解決するためになされた
もので、その目的とするところは、低温貯槽の屋根部に
設けた安全弁より噴出した低温ガスを、安全弁の周囲や
貯槽付近に滞留させることなく大気中高く遠くに効率良
く放散させ充分拡散希釈させて、無害化するとともに、
安全弁の作動に障害を生じないようにするものである。The present invention has been made in order to solve the above-described problems, and an object thereof is to cause low-temperature gas ejected from a safety valve provided on a roof portion of a low-temperature storage tank to stay around the safety valve and near the storage tank. Efficiently radiate high and far into the atmosphere without dissolving and sufficiently diffusing and diluting, making it harmless,
This prevents the operation of the safety valve from being disturbed.
（課題を解決するための手段） 本発明に係る低温貯槽安全弁のガス放散方法は、低温
貯槽の屋根部に設けた安全弁に連繋する導管の端部にガ
ス放散管を設け、該ガス放散管内に高温高圧のスチーム
を導入して、前記安全弁から噴出した低温ガスを上記ガ
ス放散管内でスチームと混合したのち圧送して大気中高
く遠くへ放散させるか、あるいは、低温貯槽の屋根部に
設けた安全弁に連繋する導管の端部にガス放散管を設け
ることなく、該導管の出口付近の周囲にスチーム管の出
口を噴出低温ガスと同一方向に向けて高温高圧のスチー
ムを導入し、スチームの噴出圧力により噴出低温ガスを
吸引加速してスチームと噴出低温ガスを混合しながら圧
送して大気中高く遠くへ放散させるものである。(Means for Solving the Problems) The gas dissipating method for a low-temperature storage tank safety valve according to the present invention includes the steps of: providing a gas-dissipating pipe at an end of a conduit connected to a safety valve provided on the roof of the low-temperature storage tank; A high-temperature and high-pressure steam is introduced, and the low-temperature gas ejected from the safety valve is mixed with steam in the gas-dissipating pipe, and then pressure-fed and diffused high and far into the atmosphere, or a safety valve provided on the roof of a low-temperature storage tank. Without providing a gas-dissipating tube at the end of the conduit connecting to the outlet, the outlet of the steam pipe is ejected around the outlet of the conduit, and high-temperature and high-pressure steam is introduced in the same direction as the low-temperature gas to introduce the steam ejection pressure. In this method, the low-temperature gas ejected is sucked and accelerated, and the steam and the low-temperature gas ejected are mixed with each other to be pumped while being mixed, thereby dispersing the gas to the atmosphere at a high distance.
また、本発明に係る低温貯槽安全弁のガス放散構造
は、低温貯槽の屋根部に設けた安全弁に連繋する導管の
端部にガス放散管を遊嵌して設け、該ガス放散管内で低
温ガスと高温高圧のスチームを混合したのち圧送して大
気中高く遠くへ放散させるためのスチーム管を、前記ガ
ス放散管に配設したものである。Further, in the gas diffusion structure of the low-temperature storage tank safety valve according to the present invention, the low-temperature storage tank is provided with a gas release pipe loosely fitted to an end of a conduit connected to the safety valve provided on the roof of the low-temperature storage tank, and a low-temperature gas is provided in the gas release pipe. A steam pipe for mixing high-temperature and high-pressure steam and then sending it under pressure to dissipate it in the atmosphere at a high distance is provided in the gas-dissipating pipe.
また、上記ガス放散管に配設するスチーム管は、導管
の端部上方に配置し、かつそのスチーム管の出口側をガ
ス放散管の出口付近の噴出ガス内に延出形成したもので
ある。In addition, the steam pipe provided in the gas-dissipating pipe is disposed above the end of the pipe, and the outlet side of the steam pipe is formed so as to extend into the jet gas near the outlet of the gas-dissipating pipe.
さらにまた、上記ガス放散管に配設するスチーム管
は、ガス放散管内の導管を直接的に加熱するようにスチ
ーム管の出口をガス放散管の入口付近に形成するか、あ
るいは、ガス放散管内の導管を間接的に加熱するように
スチーム管を導管に当接して形成したものである。Still further, in the steam pipe provided in the gas stripping pipe, an outlet of the steam pipe is formed near the inlet of the gas stripping pipe so as to directly heat the conduit in the gas stripping pipe, or the steam pipe in the gas stripping pipe is provided. A steam tube is formed in contact with the conduit so as to indirectly heat the conduit.
また、本発明に係る低温貯槽安全弁のガス放散構造
は、高温高圧のスチームの噴出圧力により噴出低温ガス
を吸引加速してスチームと噴出低温ガスを混合しながら
圧送して大気中高く遠くへ放散させるように、低温貯槽
の屋根部に設けた安全弁に連繋する導管の出口付近の周
囲に、スチームの出口を噴出低温ガスと同一方向に向け
たスチーム管を形成したものである。Further, the gas diffusion structure of the low-temperature storage tank safety valve according to the present invention is characterized in that the high-pressure and high-pressure steam discharge pressure accelerates suction of the discharged low-temperature gas, mixes the steam with the discharged low-temperature gas, pumps the mixed gas, and discharges it to the atmosphere at a high distance. As described above, a steam pipe is formed around the vicinity of the outlet of the conduit connected to the safety valve provided on the roof of the low-temperature storage tank, in which the outlet of the steam is directed in the same direction as the jetted low-temperature gas.
（作用） 本発明に係る低温貯槽安全弁のガス放散方法は、低温
貯槽の内部ガス圧力が上昇し、低温貯槽の屋根部に設け
た安全弁に連繋する導管のガス出口より低温ガスが噴出
した場合、高温高圧のスチームが導管の端部に設けたガ
ス放散管内に噴出し、該ガス放散管内でスチームと混合
したのち圧送して大気中高く遠くへ放散させるか、ある
いは、導管の端部にガス放散管を設けることなく、該導
管の出口付近の周囲にスチーム管出口を噴出低温ガスと
同一方向に向けて高温高圧のスチームを導入し、スチー
ムの噴出圧力により噴出低温ガスを吸引加速してスチー
ムと噴出低温ガスを混合しながら圧送して大気中高く遠
くへ放散させるので、安全弁の導管出口から噴出する高
圧の低温ガスが噴出時に膨張して更に低温化し、かつ安
全弁及び貯槽の周囲付近を冷却しようとしても、あらか
じめ混合したスチームの熱、あるいは混合しながら放出
するスチームの熱が噴出低温ガスを温めるとともに、安
全弁及び導管周囲も加温しながら、低温ガスを圧送して
大気中高く遠くに効率良く放散させる。従って、噴出し
た低温ガスが貯槽周囲の地表面に降下することが防止で
き、また大気中の湿気や水分の凝結、雨水などの凍結に
よる安全弁の作動障害が生じることもない。(Operation) The gas diffusion method of the low-temperature storage tank safety valve according to the present invention is characterized in that, when the internal gas pressure of the low-temperature storage tank rises and low-temperature gas is ejected from the gas outlet of the conduit connected to the safety valve provided on the roof of the low-temperature storage tank, High-temperature and high-pressure steam blows out into a gas emission pipe provided at the end of the conduit, and is mixed with steam in the gas emission pipe and then pumped to be radiated high and far into the atmosphere, or gas is released to the end of the conduit. Without providing a pipe, a high-temperature and high-pressure steam is introduced around the outlet of the conduit around the outlet of the steam pipe in the same direction as the low-temperature gas to be injected, and the low-pressure gas is sucked and accelerated by the pressure of the steam to accelerate the steam. The high-pressure low-temperature gas ejected from the outlet of the safety valve expands at the time of ejection and cools down further, and the safety valve and the storage are stored. Even if the surroundings of the tank are to be cooled, the heat of the steam that has been mixed in advance or the heat of the steam that is released while mixing warms the low-temperature gas, and pumps the low-temperature gas while heating the safety valve and around the conduit. Efficiently disperses high and far in the atmosphere. Therefore, the jetted low-temperature gas can be prevented from dropping to the ground surface around the storage tank, and the safety valve does not fail to operate due to condensation of moisture and moisture in the atmosphere and freezing of rainwater.
また、本発明に係る低温貯槽安全弁のガス放散構造
は、低温貯槽の屋根部に設けた安全弁に連繋する導管の
端部にガス放散管を遊嵌して設け、該ガス放散管内で低
温ガスと高温高圧のスチームを混合したのち圧送して大
気中高く遠くへ放散させるためのスチーム管を、前記ガ
ス放散管に配設したので、安全弁から噴出する低温ガス
はガス放散管内で効率良く高温高圧のスチームと混合さ
れるため、少量スチームでの加温特性に優れ、かつガス
放散管内の導管及び近くの安全弁の加温性も良い。Further, in the gas diffusion structure of the low-temperature storage tank safety valve according to the present invention, the low-temperature storage tank is provided with a gas release pipe loosely fitted to an end of a conduit connected to the safety valve provided on the roof of the low-temperature storage tank, and a low-temperature gas is provided in the gas release pipe. Since a steam pipe for mixing high-temperature and high-pressure steam and then sending it to the atmosphere and dissipating it in the atmosphere at a high distance is arranged in the gas-dissipating pipe, the low-temperature gas ejected from the safety valve is efficiently supplied to the gas-dissipating pipe at a high-temperature and high-pressure. Since it is mixed with steam, it has excellent heating characteristics with a small amount of steam, and also has good heating properties of the conduit in the gas diffusion tube and the nearby safety valve.
また、ガス放散管内に貫通してスチーム管を導管の端
部上方に位置させ、かつそのスチーム管の出口側をガス
放散管の出口付近のガス噴出ガス内に延出形成した場合
には、ガス放散管内に溜ったガスをスチームの噴出圧力
により吸引してスチームと混合し加速して勢い良く所定
方向に高く遠くへ放散させる。In the case where the steam pipe penetrates into the gas diffusion pipe and is located above the end of the conduit, and the outlet side of the steam pipe is formed to extend into the gas ejection gas near the outlet of the gas diffusion pipe, The gas accumulated in the diffusion tube is sucked by the jet pressure of the steam, mixed with the steam, accelerated, and rapidly vigorously diffused in a predetermined direction.
また、ガス放散管に遊嵌する導管部分の周囲を直接的
に加熱するようにスチーム管の出口をガス放散管の入口
付近に形成するか、あるいは、ガス放散管内の導管を間
接的に加熱するようにスチーム管を導管に当接して配設
した場合には、安全弁から噴出した低温ガスはあらかじ
め導管内で導管周囲からの高温スチームの熱によって直
接又は間接的に十分予熱加温した後、スチームと混合希
釈して所定方向に高く遠くへ拡散させる。In addition, the outlet of the steam pipe is formed near the inlet of the gas diffusion pipe so as to directly heat the periphery of the pipe section that fits loosely into the gas diffusion pipe, or the pipe in the gas diffusion pipe is heated indirectly. When the steam pipe is placed in contact with the conduit as described above, the low-temperature gas ejected from the safety valve is sufficiently preheated in the conduit directly or indirectly by the heat of the high-temperature steam from around the conduit, and then steamed. And then diffuse the mixture to a high distance in a predetermined direction.
また、本発明に係る低温貯槽安全弁のガス放散構造
は、ガス放散管を設けることなく、高温高圧のスチーム
の噴出圧力により噴出低温ガスを吸引加速してスチーム
と噴出低温ガスを混合しながら圧送して大気中高く遠く
へ放散させるように、低温貯槽の屋根部に設けた安全弁
に連繋する導管の出口付近の周囲に、スチームの出口を
噴出低温ガスと同一方向に向けたスチーム管を形成した
場合には、噴出したガスはガス出口で直ちにスチームに
周囲から包み込まれるように効率良く混合し、スチーム
に加温希釈されながら高く遠くへ放散される。In addition, the gas release structure of the low-temperature storage tank safety valve according to the present invention, without providing a gas release tube, sucks and accelerates the ejected low-temperature gas by the ejection pressure of the high-temperature and high-pressure steam and mixes the steam and the ejected low-temperature gas to feed the mixture. When a steam pipe is formed around the outlet near the conduit connected to the safety valve provided on the roof of the low-temperature storage tank so that the steam outlet is directed in the same direction as the low-temperature gas that is ejected, so that the high-temperature gas is released far into the atmosphere. In the meantime, the jetted gas is mixed efficiently at the gas outlet so as to be immediately wrapped in the steam from the surroundings, and is diffused to a high distance while being heated and diluted by the steam.
（実施例） この発明を実施例の図に基づいて詳細に説明する。(Example) The present invention will be described in detail with reference to the drawings of an example.
第１図は、この発明に係る第１の実施例のスチーム管
を低温貯槽の安全弁に連繋する導管を介して設けたガス
放散管に設けた状態を示す側面説明図である。１は低温
液化ガスを貯蔵する低温貯槽屋根、２は貯槽内部のガス
層から直立するパイプの元バルブ３の上に設けられた安
全弁である。安全弁２の先で連繋する導管４はＬ字型に
水平方向から下方に向かって屈曲して延出し、導管４の
先端は大口径のＬ字状のガス放散管６に遊嵌しており、
安全弁２より噴出した低温ガスは、導管４を通ってガス
出口５よりガス放散管６に入り、放散口７より大気に放
散される。FIG. 1 is an explanatory side view showing a state in which a steam pipe according to a first embodiment of the present invention is provided on a gas diffusion pipe provided via a conduit connected to a safety valve of a low-temperature storage tank. 1 is a roof of a low-temperature storage tank for storing low-temperature liquefied gas, and 2 is a safety valve provided on a base valve 3 of a pipe standing upright from a gas layer inside the storage tank. The conduit 4 connected at the end of the safety valve 2 is bent downward from a horizontal direction in an L-shape and extends, and the distal end of the conduit 4 is loosely fitted to a large-diameter L-shaped gas diffusion tube 6.
The low-temperature gas ejected from the safety valve 2 passes through the conduit 4, enters the gas emission pipe 6 from the gas outlet 5, and is emitted to the atmosphere from the emission port 7.
この発明に係るスチーム管８は、ガス放散管６内に貫
通して水平方向に延出しており、ガス出口５より噴出す
るガスの流れ方向と直交して設けられる。また、スチー
ム管８のスチーム出口９は、ガスの放散口７の先端部付
近まで延出して設けられ、スチームのドレン水が排出さ
れても放散口７より外部へ流出して、ガス放散管６の内
部やガスの導管４内部へは流入しないように形成する。The steam pipe 8 according to the present invention penetrates into the gas diffusion pipe 6 and extends in the horizontal direction, and is provided orthogonal to the flow direction of the gas ejected from the gas outlet 5. The steam outlet 9 of the steam pipe 8 is provided so as to extend to near the tip of the gas discharge port 7. Even if the drain water of the steam is discharged, it flows out from the discharge port 7 to the outside, and the gas discharge pipe 6. So that the gas does not flow into the inside of the pipe or the inside of the conduit 4.
第２図Ａは、この発明に係る第２の実施例のスチーム
管を低温貯槽の安全弁に設けた状態を示す側面説明図で
ある。FIG. 2A is an explanatory side view showing a state in which a steam pipe according to a second embodiment of the present invention is provided on a safety valve of a low-temperature storage tank.
スチーム管18Aは、ガス放散管６の側壁部に配管され
ており、ガス放散管６の下部を延長して形成したジャケ
ット部10の側壁下部にスチーム出口19Aを開口して設け
る。The steam pipe 18A is provided on the side wall of the gas release pipe 6, and a steam outlet 19A is provided at the lower part of the side wall of the jacket 10 formed by extending the lower part of the gas discharge pipe 6.
また、導管４は、ジャケット部10の内部を鉛直上方に
延出してガスの放散口７の水平下端部より上部にガス出
口５が位置するように形成する。The conduit 4 is formed so as to extend vertically inside the jacket portion 10 so that the gas outlet 5 is located above the horizontal lower end of the gas outlet 7.
また、図示していないがさらに導管４の先端部を放散
口７に向けて水平方向に曲折して形成してもよい。Although not shown, the distal end of the conduit 4 may be further bent in the horizontal direction toward the emission port 7.
また、ジャケット部10の下部にはドレン抜き11を設け
る。In addition, a drain vent 11 is provided below the jacket portion 10.
従って、スチーム管18Aより送られたスチームは、ジ
ャケット部10において導管４を周囲より直接加熱して導
管内の低温ガスを加温して放散口７よりガスと混合して
大気中高く遠くへ放散する。Therefore, the steam sent from the steam pipe 18A directly heats the conduit 4 from the surroundings in the jacket portion 10, heats the low-temperature gas in the conduit, mixes the gas with the gas from the discharge port 7, and radiates the gas to the atmosphere. I do.
また、スチームのドレン水は、ドレン抜き11より排出
され、例えドレン水がジャケット部に溜っても、ガス出
口５がガス放散口７の下端より上部に位置しているた
め、ドレン水はガス出口５から導管４内部へ侵入するこ
とはなく、放散口７より外部に排出される。Also, the drain water of the steam is discharged from the drain vent 11, and even if the drain water accumulates in the jacket portion, since the gas outlet 5 is located above the lower end of the gas discharge port 7, the drain water is discharged from the gas outlet 11. 5 does not enter the inside of the conduit 4, but is discharged outside through the emission port 7.
第２図Ｂは、この発明に係る第３の実施例のスチーム
管を設けた状態を示す一部を欠除した側面説明図であ
る。FIG. 2B is an explanatory side view of a third embodiment according to the present invention, in which a steam pipe is provided, with a part thereof being omitted.
スチーム管18Bは、ガス放散管６の下部を延長して形
成したジャケット部10の下部よりガス放散管６の内壁面
に沿って複数本鉛直に設ける。また、ジャケット部10の
下部は開口してドレン出口12に形成する。A plurality of steam pipes 18B are provided vertically from the lower part of the jacket portion 10 formed by extending the lower part of the gas emission pipe 6 along the inner wall surface of the gas emission pipe 6. The lower part of the jacket part 10 is opened to form a drain outlet 12.
ガスの導管４は、ジャケット部10の内部を延出してガ
スの放散口７の近部まで至るように設ける。The gas conduit 4 is provided so as to extend inside the jacket portion 10 and reach the vicinity of the gas outlet 7.
スチーム出口19Bより噴出したスチームは、ジャケッ
ト部10で導管４を周囲より直接加熱して低温ガスを加温
した後、ガスと混合して放散口７より放散される。ま
た、スチームのドレン水は、ジャケット部10下部の開口
したドレン出口12より流出する。The steam spouted from the steam outlet 19B is heated directly from the surroundings of the conduit 4 by the jacket portion 10 to heat the low-temperature gas, and then mixed with the gas and emitted from the emission port 7. In addition, the drain water of the steam flows out from a drain outlet 12 opened at a lower portion of the jacket portion 10.
第３図は、この発明に係る第４の実施例のスチーム管
を設けた状態を示す一部を欠除した側面説明図である。FIG. 3 is an explanatory side view of a fourth embodiment according to the present invention, showing a state in which a steam pipe is provided, with a part removed.
スチーム管28は、ガス放散管６の下部を延長して形成
したジャケット部10の下部より入り、導管４の外周に螺
旋状に配設する。The steam pipe 28 enters from the lower part of the jacket 10 formed by extending the lower part of the gas diffusion pipe 6 and is spirally disposed on the outer periphery of the conduit 4.
スチームは、ジャケット部10内でスチーム管28と導管
４の管壁を伝熱によって周囲より間接的に低温ガスを加
熱した後、スチーム出口29より噴出し低温ガスを放散口
７より放散させる。The steam indirectly heats the low-temperature gas from the surroundings of the steam pipe 28 and the tube wall of the conduit 4 by heat transfer in the jacket portion 10, and then jets out from the steam outlet 29 to diffuse the low-temperature gas from the emission port 7.
また、スチームのドレン水は、ジャケット部10の下部
に開口したドレン出口22より外部に流出する。Further, the drain water of the steam flows out through a drain outlet 22 opened at a lower portion of the jacket portion 10.
第４図Ａ及び第４図Ｂは、この発明に係る第５の実施
例のスチーム管38A,38Bをガスの導管４のガス出口５の
周囲にリング状に設けた状態を示す一部を欠除した側面
説明図である。FIGS. 4A and 4B are partially omitted views showing a state in which the steam pipes 38A and 38B of the fifth embodiment according to the present invention are provided in a ring shape around the gas outlet 5 of the gas conduit 4. It is the side explanatory drawing which removed.
スチーム管38A、38Bは、ガス放散管を設けることなく
導管４のガス出口５の外周にリング状に設け、複数個の
孔よりなるスチーム出口39A,39Bは噴出低温ガスと同一
方向の鉛直方向もしくは水平方向に向けて形成し、高温
高圧のスチームの噴出圧力により噴出低温ガスを吸引加
速して、スチームと噴出低温ガスを混合しながら圧送し
て大気中高く遠くへ放散させる。The steam pipes 38A and 38B are provided in a ring shape on the outer periphery of the gas outlet 5 of the conduit 4 without providing a gas release pipe, and the steam outlets 39A and 39B comprising a plurality of holes are provided in a vertical direction or the same direction as the jetted cold gas. It is formed in the horizontal direction, sucks and accelerates the jetted low-temperature gas by the jet pressure of the high-temperature, high-pressure steam, and pumps the steam and the jetted low-temperature gas while mixing them, and disperses them in the atmosphere at high distance.
（効果） 本発明に係る低温貯槽安全弁のガス放散方法は、低温
貯槽の内部ガス圧力が上昇し、低温貯槽の屋根部に設け
た安全弁に連繋する導管のガス出口より低温ガスが噴出
した場合、高温高圧のスチームが導管の端部に設けたガ
ス放散管内に噴出し、該ガス放散管内でスチームと混合
したのち圧送して大気中高く遠くへ放散させるか、ある
いは、導管の端部にガス放散管を設けることなく、該導
管の出口付近の周囲にスチーム管出口を噴出低温ガスと
同一方向に向けて高温高圧のスチームを導入し、スチー
ムの噴出圧力により噴出低温ガスを吸引加速してスチー
ムと噴出低温ガスを混合しながら圧送して大気中高く遠
くへ放散させるので、安全弁の導管出口から噴出する高
圧の低温ガスが噴出時に膨張して更に低温化し、かつ安
全弁及び貯槽の周囲付近を冷却しようとしても、あらか
じめ混合したスチームの熱、あるいは混合しながら放出
するスチームの熱が噴出低温ガスを温めるとともに、安
全弁及び導管周囲も加温するため、大気中の湿気や水分
の凝結、雨水などの凍結による安全弁の作動障害は生じ
ず、更に低温貯槽の屋根部に設けた安全弁から噴出した
低温ガスは貯槽周囲の地表面へは降下することなくスチ
ームで希釈され、またスチームの圧力により圧送され
て、貯槽周囲に滞留することなく大気中高く遠くへ安全
に拡散することができる。従って、安全弁から噴出した
低温ガスは貯槽の付近に滞留して火災の危険や人体への
危害を及ぼすことがなく、地表面に滞留して低温ガスに
よる凍結災害も発生させることがない。(Effect) In the gas diffusion method of the low-temperature storage tank safety valve according to the present invention, when the internal gas pressure of the low-temperature storage tank rises and low-temperature gas is ejected from the gas outlet of the conduit connected to the safety valve provided on the roof of the low-temperature storage tank, High-temperature and high-pressure steam blows out into a gas emission pipe provided at the end of the conduit, and is mixed with steam in the gas emission pipe and then pumped to be radiated high and far into the atmosphere, or gas is released to the end of the conduit. Without providing a pipe, a high temperature and high pressure steam is introduced around the outlet of the conduit around the outlet of the steam pipe in the same direction as the low-temperature gas to be jetted, and the low-temperature gas is sucked and accelerated by the jet pressure of the steam to form a steam. The high-pressure low-temperature gas ejected from the outlet of the safety valve expands at the time of ejection and cools down further, and the safety valve and the storage are stored. Even if the surroundings of the tank are to be cooled, the heat of the steam that has been mixed in advance or the heat of the steam that is released while mixing warms the low-temperature gas that is jetted out, and also heats the surroundings of the safety valve and conduit, so that the humidity and moisture in the atmosphere There is no malfunction of the safety valve due to condensation of water and freezing of rainwater, etc.Moreover, the low-temperature gas ejected from the safety valve provided on the roof of the low-temperature storage tank is diluted with steam without descending to the ground surface around the storage tank, And can be safely diffused high and far into the atmosphere without staying around the storage tank. Therefore, the low-temperature gas ejected from the safety valve does not stay near the storage tank to cause a danger of fire or harm to the human body, and the low-temperature gas stays on the ground surface to prevent freezing disaster caused by the low-temperature gas.
また、本発明に係る低温貯槽安全弁のガス放散構造
は、低温貯槽の屋根部に設けた安全弁に連繋する導管の
端部にガス放散管を遊嵌して設け、該ガス放散管内で低
温ガスと高温高圧のスチームを混合したのち圧送して大
気中高く遠くへ放散させるためのスチーム管を、前記ガ
ス放散管に配設したので、安全弁から噴出する低温ガス
はガス放散管内で効率良く高温高圧のスチームと混合さ
れるため、少量スチームでの加温特性に優れ、かつガス
放散管内の導管及び近くの安全弁の加温性も良い。Further, in the gas diffusion structure of the low-temperature storage tank safety valve according to the present invention, the low-temperature storage tank is provided with a gas release pipe loosely fitted to an end of a conduit connected to the safety valve provided on the roof of the low-temperature storage tank, and a low-temperature gas is provided in the gas release pipe. Since a steam pipe for mixing high-temperature and high-pressure steam and then sending it to the atmosphere and dissipating it in the atmosphere at a high distance is arranged in the gas-dissipating pipe, the low-temperature gas ejected from the safety valve is efficiently supplied to the gas-dissipating pipe at a high-temperature and high-pressure. Since it is mixed with steam, it has excellent heating characteristics with a small amount of steam, and also has good heating properties of the conduit in the gas diffusion tube and the nearby safety valve.
また、ガス放散管内に貫通してスチーム管を導管の端
部上方に位置させ、かつそのスチーム管の出口側をガス
放散管の出口付近のガス噴出ガス内に延出形成した場合
には、ガス放散管内に溜ったガスをスチームの噴出圧力
により吸引して混合し、加速して勢い良く高く遠くへ放
散することができる。In the case where the steam pipe penetrates into the gas diffusion pipe and is located above the end of the conduit, and the outlet side of the steam pipe is formed to extend into the gas ejection gas near the outlet of the gas diffusion pipe, The gas accumulated in the diffusion tube is sucked and mixed by the jet pressure of steam, accelerated, and can be quickly and vigorously diffused far away.
また、ガス放散管に遊嵌する導管部分の周囲を直接的
に加熱するようにスチーム管の出口をガス放散管の入口
付近に形成するか、あるいは、ガス放散管内の導管を間
接的に加熱するようにスチーム管を導管に当接して配設
した場合には、安全弁から噴出した低温ガスはあらかじ
め導管内で導管周囲からの高温スチームの熱によって直
接又は間接的に十分に予熱加温された後、スチームと混
合希釈されるので一層効率的で安全に高く遠くへ放散す
ることができる。特にスチーム管を間接的に配管した場
合、予熱加温が効率的になされ、途中での熱損失も少な
く熱効率上有効である。In addition, the outlet of the steam pipe is formed near the inlet of the gas diffusion pipe so as to directly heat the periphery of the pipe section that fits loosely into the gas diffusion pipe, or the pipe in the gas diffusion pipe is heated indirectly. When the steam pipe is placed in contact with the conduit as described above, the low-temperature gas ejected from the safety valve is sufficiently preheated in the conduit directly or indirectly by the heat of the high-temperature steam from around the conduit. Since it is mixed and diluted with steam, it can be more efficiently, safely dissipated to a higher distance. In particular, when a steam pipe is indirectly piped, preheating is efficiently performed, heat loss on the way is small, and heat efficiency is effective.
また、本発明に係る低温貯槽安全弁のガス放散構造
は、ガス放散管を設けることなく、高温高圧のスチーム
圧力によって噴出低温ガスを吸引し加速してスチームと
噴出低温ガスを混合しながら圧送して大気中高く遠くへ
放散させるように、低温貯槽の屋根部に設けた安全弁に
連繋する導管の出口付近の周囲に、スチームの出口を噴
出ガスと同一方向に向けたスチーム管を形成した場合に
は、噴出したガスはガス出口でスチームに直ちに周囲か
ら包み込まれるように混合されながら吸引加速されるた
め、効率良く加温希釈されながら、安全に高く遠くへ放
散することができる。また、構造が簡単であるため、製
作及び取り付けが容易に安価にできる。Further, the gas diffusion structure of the low-temperature storage tank safety valve according to the present invention, without providing a gas-dissipating pipe, sucks and accelerates the ejected low-temperature gas by high-temperature and high-pressure steam pressure, and performs pressure-feed while mixing steam and the ejected low-temperature gas. When a steam pipe is formed around the outlet of the conduit connected to the safety valve provided on the roof of the low-temperature storage tank so that the steam outlet is directed in the same direction as the gas to be discharged, so that it can be diffused far into the atmosphere. Since the jetted gas is sucked and accelerated while being mixed with the steam at the gas outlet so as to be immediately wrapped from the surroundings, the gas can be efficiently dissipated to a high distance while being heated and diluted efficiently. Further, since the structure is simple, it can be easily manufactured and mounted at low cost.
第１図は、この発明に係る第１の実施例のスチーム管を
低温貯槽の安全弁に連繋する導管を介して設けたガス放
散管に設けた状態を示す側面説明図、第２図Ａは、この
発明に係る第２の実施例のスチーム管を低温貯槽の安全
弁に設けた状態を示す側面説明図、第２図Ｂは、この発
明に係る第３の実施例のスチーム管を設けた状態を示す
一部を欠除した側面説明図、第３図は、この発明に係る
第４の実施例のスチーム管を設けた状態を示す一部を欠
除した側面説明図、第４図Ａ及び第４図Ｂは、この発明
に係る第５の実施例のスチーム管を設けた状態を示す一
部を欠除した側面説明図、第５図は、従来の低温貯槽安
全弁の設置状態の一例を示す側面説明図である。 １……屋根、２……安全弁 ４……導管、５……ガス出口 ６……ガス放散管、７……放散口 8,18A,18B,28,38A,38B……スチーム管 9,19A,19B,29,39A,39B……スチーム出口FIG. 1 is a side explanatory view showing a state in which a steam pipe of a first embodiment according to the present invention is provided on a gas diffusion pipe provided via a conduit connected to a safety valve of a low-temperature storage tank, and FIG. FIG. 2B is an explanatory side view showing a state in which the steam pipe of the second embodiment according to the present invention is provided in the safety valve of the low-temperature storage tank. FIG. 2B is a view showing a state in which the steam pipe of the third embodiment according to the present invention is provided. FIG. 3 is a partially cutaway side view showing a state in which a steam pipe according to a fourth embodiment of the present invention is provided, and FIG. FIG. 4B is a side view of the fifth embodiment according to the present invention in which a steam pipe is provided and a part of the steam pipe is omitted, and FIG. 5 shows an example of an installation state of a conventional low-temperature storage tank safety valve. It is an explanatory side view. 1 roof 2 safety valve 4 conduit 5 gas outlet 6 gas discharge pipe 7 discharge port 8,18A, 18B, 28,38A, 38B steam pipe 9,19A, 19B, 29,39A, 39B …… Steam exit
Claims (5)
る導管の端部にガス放散管を設け、該ガス放散管内に高
温高圧のスチームを導入して、前記安全弁から噴出した
低温ガスを上記ガス放散管内でスチームと混合したのち
圧送して大気中高く遠くへ放散させるか、あるいは、低
温貯槽の屋根部に設けた安全弁に連繋する導管の端部に
ガス放散管を設けることなく、該導管の出口付近の周囲
にスチーム管の出口を噴出低温ガスと同一方向に向けて
高温高圧のスチームを導入し、スチームの噴出圧力によ
り噴出低温ガスを吸引加速してスチームと噴出低温ガス
を混合しながら圧送して大気中高く遠くへ放散させるこ
とを特徴とする低温貯槽安全弁のガス放散方法。1. A gas release pipe is provided at an end of a conduit connected to a safety valve provided on a roof of a low-temperature storage tank, and high-temperature and high-pressure steam is introduced into the gas release pipe so that low-temperature gas ejected from the safety valve is released. The gas is mixed with steam in the gas diffusion tube and then pumped to be radiated to the atmosphere at a high distance, or the gas diffusion tube is not provided at an end of a conduit connected to a safety valve provided on the roof of the low-temperature storage tank. A high-temperature and high-pressure steam is introduced around the outlet of the steam pipe around the outlet of the steam tube in the same direction as the low-temperature gas to be ejected, and the low-pressure gas is sucked and accelerated by the pressure of the steam to mix the low-temperature gas with the low-pressure gas. A gas discharge method for a low-temperature storage tank safety valve, characterized in that the gas is pumped while being released to the air at a high distance.
る導管の端部にガス放散管を遊嵌して設け、該ガス放散
管内で低温ガスと高温高圧のスチームを混合したのち圧
送して大気中高く遠くへ放散させるためのスチーム管
を、前記ガス放散管に配設したことを特徴とする低温貯
槽安全弁のガス放散構造。2. A gas release tube is loosely fitted at an end of a conduit connected to a safety valve provided on a roof of a low-temperature storage tank, and a low-temperature gas and a high-temperature, high-pressure steam are mixed in the gas release tube and then fed under pressure. A gas discharge structure for a low-temperature storage tank safety valve, wherein a steam pipe for dissipating the gas to the atmosphere at a high distance is disposed on the gas discharge pipe.
導管の端部上方に配置し、かつそのスチーム管の出口側
をガス放散管の出口付近の噴出ガス内に延出形成したこ
とを特徴とする請求項２記載の低温貯槽安全弁のガス放
散構造。3. A steam pipe disposed on the gas diffusion pipe,
3. The gas diffusion structure for a low-temperature storage tank safety valve according to claim 2, wherein the gas discharge structure is disposed above the end of the conduit, and the outlet side of the steam pipe is formed so as to extend into the jet gas near the outlet of the gas diffusion pipe.
ガス放散管内の導管を直接的に加熱するようにスチーム
管の出口をガス放散管の入口付近に形成するか、あるい
は、ガス放散管内の導管を間接的に加熱するようにスチ
ーム管を導管に当接して形成したことを特徴とする請求
項２記載の低温貯槽安全弁のガス放散構造。4. A steam pipe disposed on the gas diffusion pipe,
An outlet of the steam pipe is formed near the inlet of the gas strip to directly heat the pipe in the gas strip, or the steam pipe is applied to the pipe so as to heat the pipe in the gas strip indirectly. The gas diffusion structure of a low-temperature storage tank safety valve according to claim 2, wherein the gas diffusion structure is formed in contact with the low-temperature storage tank safety valve.
低温ガスを吸引加速してスチームと噴出低温ガスを混合
しながら圧送して大気中高く遠くへ放散させるように、
低温貯槽の屋根部に設けた安全弁に連繋する導管の出口
付近の周囲に、スチームの出口を噴出低温ガスと同一方
向に向けたスチーム管を形成したことを特徴とする低温
貯槽安全弁のガス放散構造。5. A method of sucking and accelerating a low-temperature gas ejected by a high-pressure and high-pressure steam ejection pressure to pump and mix the steam and the ejected low-temperature gas to emit high and far into the atmosphere.
A gas discharge structure for a low-temperature storage tank safety valve, characterized in that a steam pipe is formed around the outlet of a conduit connected to a safety valve provided on the roof of the low-temperature storage tank so that the steam outlet is directed in the same direction as the low-temperature gas ejected. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2164146A JP3005868B2 (en) | 1990-06-25 | 1990-06-25 | Gas release method and gas release structure of low temperature storage tank safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2164146A JP3005868B2 (en) | 1990-06-25 | 1990-06-25 | Gas release method and gas release structure of low temperature storage tank safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0454399A JPH0454399A (en) | 1992-02-21 |
| JP3005868B2 true JP3005868B2 (en) | 2000-02-07 |
Family
ID=15787624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2164146A Expired - Fee Related JP3005868B2 (en) | 1990-06-25 | 1990-06-25 | Gas release method and gas release structure of low temperature storage tank safety valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3005868B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3982032A1 (en) * | 2020-10-08 | 2022-04-13 | Volvo Truck Corporation | A hydrogen storage system including a safety device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2760952B2 (en) * | 1994-12-27 | 1998-06-04 | インターナショナル・ビジネス・マシーンズ・コーポレイション | Circuit board manufacturing method |
| JP4847052B2 (en) * | 2005-06-13 | 2011-12-28 | 本田技研工業株式会社 | Gas-liquid separation method and apparatus |
| CN103335213B (en) * | 2013-06-28 | 2015-01-07 | 谢宝院 | Low-temperature container gas-liquid conversion depressurization device |
-
1990
- 1990-06-25 JP JP2164146A patent/JP3005868B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3982032A1 (en) * | 2020-10-08 | 2022-04-13 | Volvo Truck Corporation | A hydrogen storage system including a safety device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0454399A (en) | 1992-02-21 |
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