JP2002340297A - High-pressure gas feeding equipment - Google Patents
High-pressure gas feeding equipmentInfo
- Publication number
- JP2002340297A JP2002340297A JP2001148939A JP2001148939A JP2002340297A JP 2002340297 A JP2002340297 A JP 2002340297A JP 2001148939 A JP2001148939 A JP 2001148939A JP 2001148939 A JP2001148939 A JP 2001148939A JP 2002340297 A JP2002340297 A JP 2002340297A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- temperature
- heat exchanger
- pump
- steam
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高圧ガス供給設備
に関し、詳しくは、ガス使用設備に大量のガスを供給す
る設備であって、特に、ローリーに搭載した低温液化ガ
スをポンプで昇圧し、蒸発器で気化させて供給するのに
適した高圧ガス供給設備に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-pressure gas supply facility, and more particularly to a facility for supplying a large amount of gas to a gas-using facility. The present invention relates to a high-pressure gas supply facility suitable for being supplied by being vaporized by an evaporator.
【０００２】[0002]
【従来の技術】一般に、ガスを使用する形態として、装
置等に定常的にガスを供給する使用方法と、数日から数
週間にわたってスポット的にガスを供給する非定常的な
使用方法とがある。前者の場合は、ガスの使用量に応じ
た容量の低温液化ガス貯槽と蒸発器とをユーザーの敷地
内に設置し、貯槽内の低温液化ガスを蒸発器で気化させ
て供給する形態が多くとられている。2. Description of the Related Art In general, gas is used in two ways: one is to supply gas constantly to an apparatus or the like, and the other is to use non-steady gas to supply gas in a spot manner over several days to several weeks. . In the former case, a low-temperature liquefied gas storage tank and evaporator with a capacity corresponding to the amount of gas used are installed on the user's premises, and the low-temperature liquefied gas in the storage tank is vaporized by the evaporator and supplied. Have been.
【０００３】一方、後者の場合は、例えば大型可燃性ガ
スタンクのパージや、該ガスタンクの開放検査後の気密
テストを行うときなどが該当するが、この場合、大量の
ガスが短期間に集中して必要になる。このため、低温液
化ガス貯槽を設置することなく、低温液化ガスを搭載し
たローリーがユーザー先に出向くとともに、蒸発器をユ
ーザーのもとに別途搬入し、この蒸発器にローリーから
低温液化ガスを供給し、気化させて前記ガスタンク等の
対象設備にガスを供給するようにしている。この場合、
１台のローリーに搭載した低温液化ガスでは不足するこ
とが多いため、複数のローリーがユーザーのもとに運行
し、連続的にガスを供給することが行われている。On the other hand, the latter case corresponds to, for example, purging a large flammable gas tank or performing an airtight test after an open inspection of the gas tank. In this case, a large amount of gas concentrates in a short period of time. Will be needed. Therefore, without installing a low-temperature liquefied gas storage tank, the lorry equipped with the low-temperature liquefied gas goes to the user, and the evaporator is separately carried in to the user, and the low-temperature liquefied gas is supplied to the evaporator from the lorry. Then, the gas is vaporized and supplied to a target facility such as the gas tank. in this case,
Since a low-temperature liquefied gas mounted on one lorry is often insufficient, a plurality of lorries are operated for a user to continuously supply gas.
【０００４】[0004]
【発明が解決しようとする課題】ガス使用量が少ない設
備にガスを供給する場合や、低い圧力のガスを供給する
場合は、特別な設備を用いずに比較的容易に、また、比
較的短時間でガス供給を行うことが可能である。しか
し、大容量の設備へのガス供給が要求される場合や、高
い圧力のガス供給が要求される場合は、低温液化ガスを
昇圧してから気化させて供給することが行われている。
このとき、ローリーから低温液化ガスを供給する場合
は、ローリーと蒸発器との間に、昇圧用のポンプを別途
設ける必要がある。When gas is supplied to equipment using a small amount of gas, or when gas is supplied at a low pressure, it is relatively easy and relatively short without using special equipment. It is possible to supply gas in time. However, when gas supply to a large-capacity facility is required or when gas supply at a high pressure is required, low-temperature liquefied gas is supplied after being pressurized and then vaporized.
At this time, when supplying the low-temperature liquefied gas from the lorry, it is necessary to separately provide a pressure increasing pump between the lorry and the evaporator.
【０００５】このようなポンプは、ガス供給を行ってい
る間、常時作動させる必要があるが、低温液化ガスによ
ってポンプが徐々に冷却され、大気中の水分が霜となっ
てクランク等の駆動部品に付着したり、潤滑用オイルの
粘性が上昇したりしてポンプの運転に悪影響を及ぼすこ
とがあった。[0005] Such a pump must be constantly operated during gas supply. However, the pump is gradually cooled by the low-temperature liquefied gas, and moisture in the atmosphere becomes frost, and driving parts such as cranks are driven. And the viscosity of the lubricating oil increases, which may adversely affect the operation of the pump.
【０００６】また、供給ガスの用途がガスタンク等の気
密テストの場合、ガスタンクのような設備にガスを所定
の圧力で充填した後、バルブ等で設備を気密状態に維持
し、一定期間放置後に再度圧力を圧力計で確認する。こ
のとき、充填時のガス温度と、放置後のガス温度とが異
なる場合には、ガスの膨張、収縮が起き、温度変化に伴
って圧力指示値が変化するために温度補正を行う必要が
ある。温度補正時の誤差を少なくするためには、充填時
のガス温度を極力大気温度に近くすることが望まれてい
る。[0006] When the supply gas is used for an airtight test of a gas tank or the like, the gas is filled into a facility such as a gas tank at a predetermined pressure, the facility is maintained in a hermetic state by a valve or the like, and after being left for a certain period of time, the facility is left again. Check the pressure with a pressure gauge. At this time, when the gas temperature at the time of filling and the gas temperature after standing are different, the gas expands and contracts, and the pressure indication value changes with the temperature change, so it is necessary to perform temperature correction. . In order to reduce the error at the time of temperature correction, it is desired that the gas temperature at the time of filling be as close as possible to the atmospheric temperature.
【０００７】一方、低温液化ガスを気化させる蒸発器と
しては、一般に、空温式蒸発器や温水式蒸発器、スチー
ム式蒸発器が用いられているが、加熱媒体として高温の
スチームを使用するスチーム式蒸発器は、供給ガスの温
度が高くなって大気温度近いガスが得られないので、上
述のような用途にはほとんど使用されることがなく、加
熱媒体として大気を使用する空温式蒸発器や、数十℃程
度の温水を加熱媒体として使用する温水式蒸発器を用い
るようにしていた。しかし、これらの蒸発器は、スチー
ム式蒸発器に比べて大型であることから、ポンプとは別
に運搬して設置する必要があり、ユーザーの敷地内で場
所を取るだけでなく、現地で蒸発器とポンプとを接続し
なければならず、ガス供給を開始するまでに相当の時間
を要するという問題があった。On the other hand, as an evaporator for vaporizing a low-temperature liquefied gas, an air-heated evaporator, a hot-water evaporator or a steam evaporator is generally used, but a steam using a high-temperature steam as a heating medium is used. Since the temperature of the supply gas is high and a gas close to the ambient temperature cannot be obtained, the evaporator is rarely used for the above-mentioned applications, and is an air-temperature evaporator that uses the atmosphere as a heating medium. Alternatively, a hot water evaporator using hot water of about several tens of degrees Celsius as a heating medium is used. However, these evaporators are larger than steam-type evaporators, so they need to be transported and installed separately from pumps. And the pump must be connected, and it takes a considerable time to start gas supply.
【０００８】そこで本発明は、スチーム式蒸発器が小型
で高性能であり、ポンプと一体化した状態で運搬、設置
が可能であるという利点を生かし、ポンプの長時間連続
運転が可能で、さらに、大気温度に近い温度のガスを供
給できる高圧ガス供給設備を提供することを目的として
いる。Therefore, the present invention takes advantage of the fact that the steam type evaporator is small and has high performance, and can be transported and installed in a state integrated with the pump. It is another object of the present invention to provide a high-pressure gas supply facility capable of supplying a gas having a temperature close to the atmospheric temperature.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するた
め、本発明の高圧ガス供給設備は、低温液化ガスを昇圧
するポンプと、該ポンプで昇圧された低温液化ガスを気
化させる蒸発器とを備えた高圧ガス供給設備において、
前記蒸発器は、スチーム、温水等の熱媒体が導入される
熱交換槽内に、前記昇圧後の低温液化ガスを導入して気
化させる熱交換器と、前記ポンプで昇圧した低温液化ガ
スの一部又は該ポンプ内で気化したガスの少なくとも一
部を導入して加温する補助熱交換器とを収納するととも
に、該補助熱交換器で加温されたガスを前記ポンプの凍
結防止用ガスとして供給する経路を備えていることを特
徴としている。In order to achieve the above object, a high-pressure gas supply system according to the present invention comprises a pump for increasing the temperature of a low-temperature liquefied gas, and an evaporator for evaporating the low-temperature liquefied gas pressurized by the pump. Equipped with high-pressure gas supply equipment,
The evaporator includes a heat exchanger that introduces and evaporates the pressurized low-temperature liquefied gas into a heat exchange tank into which a heat medium such as steam or hot water is introduced, and a low-temperature liquefied gas pressurized by the pump. And an auxiliary heat exchanger for introducing and heating at least a part of the gas vaporized in the pump, and using the gas heated by the auxiliary heat exchanger as an antifreezing gas for the pump. It is characterized by having a supply path.
【００１０】特に、本発明の高圧ガス供給設備は、前記
蒸発器が、前記熱交換槽内の熱媒体としてスチーム層及
び温水層の二層を有し、前記熱交換器は、前記温水層内
に配置されて前記昇圧後の低温液化ガスが導入される第
一熱交換器と、前記スチーム層内に配置されて該第一熱
交換器で熱交換後のガスが導入される第二熱交換器と、
前記温水層内に配置されて前記第二熱交換器で熱交換後
のガスが導入される第三熱交換器とを有しており、さら
に、前記第二熱交換器で熱交換後のガスの温度が、該高
圧ガス供給設備から高圧ガス使用設備に供給するガスの
設定温度よりも高く設定され、前記第三熱交換器で熱交
換後のガスの温度が、第二熱交換器で熱交換後のガスの
温度より低く設定されていることを特徴としている。[0010] In particular, in the high-pressure gas supply equipment according to the present invention, the evaporator has two layers, a steam layer and a hot water layer, as a heat medium in the heat exchange tank. A first heat exchanger that is disposed in the steam layer and receives the gas after the heat exchange in the first heat exchanger. Vessels,
A third heat exchanger that is disposed in the hot water layer and into which the gas after heat exchange in the second heat exchanger is introduced, and further includes a gas after heat exchange in the second heat exchanger. Is set higher than the set temperature of the gas supplied from the high-pressure gas supply equipment to the high-pressure gas use equipment, and the temperature of the gas after heat exchange in the third heat exchanger is heat in the second heat exchanger. It is characterized in that the temperature is set lower than the temperature of the gas after replacement.
【００１１】また、前記蒸発器が前記熱交換槽内に熱媒
体としてスチームを供給するボイラーユニットを備えて
いることを特徴とし、前記蒸発器から導出して高圧ガス
使用設備に供給するガスの温度を測定する温度測定手段
と、該温度測定手段で測定したガスの温度に基づいて前
記熱交換槽内に供給するスチーム量を調節するスチーム
供給量調節手段とを備えていることを特徴としている。[0011] The evaporator may further include a boiler unit for supplying steam as a heat medium into the heat exchange tank, wherein a temperature of a gas derived from the evaporator and supplied to a high-pressure gas use facility is provided. And a steam supply amount adjusting means for adjusting the amount of steam supplied into the heat exchange tank based on the gas temperature measured by the temperature measuring means.
【００１２】[0012]
【発明の実施の形態】図１は本発明の高圧ガス供給設備
の一形態例を示す系統図である。この高圧ガス供給設備
は、低温液化ガス貯槽としてのローリー１０に搭載した
低温液化ガスを所定圧力に昇圧した後、気化して高圧ガ
ス使用設備に供給するものであって、低温液化ガスを昇
圧するポンプ２０と、該ポンプ２０で昇圧された低温液
化ガスを気化させる蒸発器３０と、該蒸発器３０に加熱
媒体としてのスチームを供給するボイラーユニット４０
とを有している。FIG. 1 is a system diagram showing one embodiment of a high-pressure gas supply system according to the present invention. This high-pressure gas supply equipment is to raise the low-temperature liquefied gas mounted on the lorry 10 as a low-temperature liquefied gas storage tank to a predetermined pressure, and then to vaporize and supply the low-pressure liquefied gas to the high-pressure gas use equipment, and to increase the low-temperature liquefied gas A pump 20, an evaporator 30 for evaporating the low-temperature liquefied gas pressurized by the pump 20, and a boiler unit 40 for supplying steam to the evaporator 30 as a heating medium
And
【００１３】蒸発器３０は、スチーム層３１及び温水層
３２の二層を有する気液共存状態の熱交換槽３３と、該
熱交換槽３３内の温水層３２部分に収納された第一熱交
換器３４と、スチーム層３１部分に収納された第二熱交
換器３５と、温水層３２部分に収納された第三熱交換器
３６と、スチーム層３１部分に収納された補助熱交換器
３７とからなるものであって、第一熱交換器３４、第二
熱交換器３５及び第三熱交換器３６は、供給ガスの流れ
方向に対して直列に接続されている。The evaporator 30 includes a gas-liquid coexisting heat exchange tank 33 having two layers, a steam layer 31 and a hot water layer 32, and a first heat exchange tank housed in the hot water layer 32 in the heat exchange tank 33. A heat exchanger 34, a second heat exchanger 35 housed in the steam layer 31, a third heat exchanger 36 housed in the hot water layer 32, and an auxiliary heat exchanger 37 housed in the steam layer 31. The first heat exchanger 34, the second heat exchanger 35, and the third heat exchanger 36 are connected in series in the flow direction of the supply gas.
【００１４】熱交換槽３３には、ボイラーユニット４０
で発生したスチームをスチーム層３１に供給する第一ス
チーム管４１と、温水層３２内にスチームを供給する第
二スチーム管４２とが設けられており、各スチーム管４
１，４２には、スチーム供給量を調節するため手段とし
て第一調節弁４３及び第二調節弁４４がそれぞれ設けら
れている。また、槽底部には、ドレン水をボイラーユニ
ット４０に戻すためのドレン４５が設けられている。The heat exchange tank 33 includes a boiler unit 40.
A first steam pipe 41 for supplying the steam generated in the above to the steam layer 31 and a second steam pipe 42 for supplying the steam into the hot water layer 32 are provided.
A first control valve 43 and a second control valve 44 are provided in the first and second 42 as means for adjusting the steam supply amount. A drain 45 for returning drain water to the boiler unit 40 is provided at the bottom of the tank.
【００１５】ポンプ２０は、駆動部２１と圧縮部２２と
からなるものであって、駆動部２１でモーターの回転運
動をクランク機構によって往復運動に変換し、圧縮部２
２でシリンダー内のピストンを往復運動させることによ
って低温液化ガスを昇圧するように形成されている。前
記圧縮部２２には、低温液化ガスを吸入する吸入管２３
と、昇圧した低温液化ガスを吐出する吐出管２４と、圧
縮操作中にシリンダー内で気化したガスを貯槽内に戻す
ための返送管２５とが設けられている。また、駆動部２
１のクランク機構は、冷却（着霜、氷結）防止や円滑な
作動を図るためのオイルが満たされたケース内に配置さ
れている。さらに、この駆動部２１には、該駆動部２１
を加温するための加温ガスが供給される加温管２６が設
けられている。The pump 20 is composed of a driving section 21 and a compression section 22. The driving section 21 converts the rotational motion of the motor into a reciprocating motion by a crank mechanism.
The pressure in the low-temperature liquefied gas is increased by reciprocating the piston in the cylinder in 2. The compression section 22 has a suction pipe 23 for sucking low-temperature liquefied gas.
And a discharge pipe 24 for discharging the pressurized low-temperature liquefied gas, and a return pipe 25 for returning the gas vaporized in the cylinder during the compression operation to the storage tank. The driving unit 2
The first crank mechanism is disposed in a case filled with oil for preventing cooling (frost formation and icing) and smooth operation. Further, the driving unit 21 includes the driving unit 21.
There is provided a heating pipe 26 to which a heating gas for heating the gas is supplied.
【００１６】ポンプ２０の前記返送管２５からは、シリ
ンダー内で気化したガスの一部をポンプ２０の凍結防止
用ガスとして取出す分岐管２７が分岐している。この分
岐管２７は、弁２８を介して前記補助熱交換器３７の入
口側に接続しており、該補助熱交換器３７の出口側に前
記加温管２６が接続している。From the return pipe 25 of the pump 20, a branch pipe 27 for extracting a part of the gas vaporized in the cylinder as a freezing prevention gas of the pump 20 is branched. The branch pipe 27 is connected to the inlet side of the auxiliary heat exchanger 37 via a valve 28, and the heating pipe 26 is connected to the outlet side of the auxiliary heat exchanger 37.
【００１７】また、蒸発器３０で気化したガスをガス使
用設備に供給するガス供給管５１には、供給ガスの温度
を測定するための手段である温度指示調節計５２が設け
られており、該温度指示調節計５２の測定値（指示値）
に基づいて前記第一調節弁４３を開閉し、第一スチーム
管４１からスチーム層３１に供給するスチーム量を調節
してスチーム層３１の温度を制御するようにしている。The gas supply pipe 51 for supplying the gas vaporized by the evaporator 30 to the gas-using equipment is provided with a temperature indicating controller 52 as a means for measuring the temperature of the supplied gas. Measured value (indicated value) of the temperature indicating controller 52
The first control valve 43 is opened and closed based on the above, and the amount of steam supplied from the first steam pipe 41 to the steam layer 31 is adjusted to control the temperature of the steam layer 31.
【００１８】さらに、ガス供給管５１には、供給ガスの
流量を測定する手段である流量指示調節計５３が設けら
れており、該流量指示調節計５３の測定値と前記温度指
示調節計５２の測定値とを演算器５４に入力して第一調
節弁４３の開度を補正することにより、円滑で的確な温
度制御を行えるようにしている。また、前記熱交換槽３
３には、温水層３２の温度を測定する手段である温度指
示調節計５５が設けられており、この温度指示調節計５
５の測定値によって前記第二調節弁４４の開度を調節
し、第二スチーム管４２から温水層３２に供給するスチ
ーム量を調節して温水層３２の温度を制御するようにし
ている。Further, the gas supply pipe 51 is provided with a flow rate indicator controller 53 which is a means for measuring the flow rate of the supply gas, and the measured value of the flow rate indicator controller 53 and the temperature indicator controller 52 are measured. By inputting the measured value to the calculator 54 and correcting the opening of the first control valve 43, smooth and accurate temperature control can be performed. In addition, the heat exchange tank 3
3 is provided with a temperature indicating controller 55 which is a means for measuring the temperature of the hot water layer 32.
The temperature of the hot water layer 32 is controlled by adjusting the opening of the second control valve 44 based on the measurement value of 5, and adjusting the amount of steam supplied from the second steam pipe 42 to the hot water layer 32.
【００１９】なお、ローリー１０は、低温液化ガス搬送
用として通常用いられている一般的なローリーであっ
て、ローリーには、前記吸入管２３に弁１１を介して接
続する低温液化ガス取出管１２と、前記返送管２５に弁
１３を介して接続するバランス管１４と、低温液化ガス
取出し時にローリー貯槽内の圧力を昇圧するための加圧
蒸発器（図示せず）とが設けられている。また、前記ボ
イラーユニット４０も、通常用いられている各種形式の
ボイラーを用いることができ、構造や加熱源は特に限定
されるものではない。The lorry 10 is a general lorry usually used for conveying cryogenic liquefied gas. The lorry has a cryogenic liquefied gas outlet pipe 12 connected to the suction pipe 23 via a valve 11. A balance pipe 14 connected to the return pipe 25 via the valve 13; and a pressurized evaporator (not shown) for increasing the pressure in the lorry storage tank when the low-temperature liquefied gas is taken out. Also, the boiler unit 40 can use various types of boilers that are commonly used, and the structure and the heating source are not particularly limited.
【００２０】このように形成した高圧ガス供給設備にお
いて、ローリー１０に搭載された低温液化ガスは、低温
液化ガス取出管１２、弁１１、吸入管２３を通ってポン
プ２０に吸入され、該ポンプ２０によって所定圧力に昇
圧される。昇圧後の低温液化ガスは、吐出管２４を通っ
て蒸発器３０に導入され、最初に、温水層３２内に設置
された第一熱交換器３４に導入される。この第一熱交換
器３４では、温水層３２の温水と熱交換を行って所定温
度まで加温され、低温液化ガスが気化して低温高圧ガス
となる。In the high-pressure gas supply equipment thus formed, the low-temperature liquefied gas mounted on the lorry 10 is sucked into the pump 20 through the low-temperature liquefied gas discharge pipe 12, the valve 11, and the suction pipe 23, and To a predetermined pressure. The pressurized low-temperature liquefied gas is introduced into the evaporator 30 through the discharge pipe 24, and is first introduced into the first heat exchanger 34 installed in the hot water layer 32. In the first heat exchanger 34, heat exchange is performed with the hot water in the hot water layer 32 to be heated to a predetermined temperature, and the low-temperature liquefied gas is vaporized to become a low-temperature high-pressure gas.
【００２１】気化した低温高圧ガスは、続いて第二熱交
換器３５に導入され、ここでスチーム層３１の高温のス
チームと熱交換を行い、供給ガス温度よりも高い温度に
加温されて高温高圧ガスとなる。この高温高圧ガスは、
第三熱交換器３６に導入され、温水層３２の温水と熱交
換を行って冷却され、所定の供給ガス温度に調節され
る。The vaporized low-temperature and high-pressure gas is subsequently introduced into the second heat exchanger 35, where it exchanges heat with the high-temperature steam of the steam layer 31, and is heated to a temperature higher than the supply gas temperature to produce a high-temperature gas. It becomes high pressure gas. This high temperature and high pressure gas is
The gas is introduced into the third heat exchanger 36, exchanges heat with the hot water in the hot water layer 32, is cooled, and is adjusted to a predetermined supply gas temperature.
【００２２】第三熱交換器３６で温度調節されたガス
は、蒸発器３０からガス供給管５１に導出され、所定圧
力、所定温度の供給ガスとなってユーザーの高圧ガス使
用設備に供給される。このとき、前記温度指示調節計５
２及び流量指示調節計５３の測定値に基づいて第一調節
弁４３が開閉制御され、スチーム層３１に供給するスチ
ーム量が調節されるとともに、温度指示調節計５５の測
定値に基づいて温水層３２に供給するスチーム量が調節
され、これによってガス供給管５１から供給される供給
ガスの温度が所定温度に制御される。The gas whose temperature has been adjusted by the third heat exchanger 36 is led out of the evaporator 30 to a gas supply pipe 51, and is supplied as a supply gas at a predetermined pressure and a predetermined temperature to a user's high-pressure gas use facility. . At this time, the temperature indicating controller 5
2 and the first control valve 43 is controlled to open and close based on the measurement values of the flow rate indicating controller 53, the amount of steam supplied to the steam layer 31 is adjusted, and based on the measurement values of the temperature indicating controller 55. The amount of steam supplied to 32 is adjusted, and thereby the temperature of the supply gas supplied from gas supply pipe 51 is controlled to a predetermined temperature.
【００２３】一方、ポンプ２０のシリンダー内で気化し
たガスは、前記返送管２５から弁１３、バランス管１４
を通ってローリー貯槽内に戻される。また、バランス管
１４からのガスだけではローリー貯槽内の圧力を所定圧
力に保つことができない場合は、前記加圧蒸発器が必要
に応じて作動し、ローリー貯槽内を所定圧力に昇圧す
る。On the other hand, the gas vaporized in the cylinder of the pump 20 flows from the return pipe 25 through the valve 13 and the balance pipe 14.
Through the lorry storage tank. Further, when the pressure in the lorry storage tank cannot be maintained at the predetermined pressure only by the gas from the balance pipe 14, the pressurized evaporator operates as necessary to increase the pressure in the lorry storage tank to the predetermined pressure.
【００２４】そして、ポンプ２０の連続運転に伴ってピ
ストンが低温液化ガスにより冷却され、熱伝導によって
クランク等の駆動部２１が徐々に冷却されてくるので、
前記分岐管２７の弁２８を開いて返送管２５のガスの一
部を分岐管２７に取出し、補助熱交換器３７でスチーム
により加温して加温管２６から駆動部２１に供給する。The piston is cooled by the low-temperature liquefied gas with the continuous operation of the pump 20, and the drive unit 21 such as a crank is gradually cooled by heat conduction.
By opening the valve 28 of the branch pipe 27, a part of the gas of the return pipe 25 is taken out to the branch pipe 27, heated by steam in the auxiliary heat exchanger 37, and supplied to the drive unit 21 from the heating pipe 26.
【００２５】このように、補助熱交換器３７で加温した
ガスを駆動部２１に供給することにより、駆動部２１を
所定温度以上に加温することができ、クランク機構の作
動を円滑に保ち、ポンプ２０を安定した状態で連続運転
することが可能となる。このとき、加温ガスを分岐させ
て取出すための弁２８は、常時開状態にしておいてもよ
く、駆動部２１の温度をセンサーで感知し、駆動部２１
の温度に応じて弁２８の開閉制御を自動的に行うように
してもよい。As described above, by supplying the gas heated by the auxiliary heat exchanger 37 to the drive unit 21, the drive unit 21 can be heated to a predetermined temperature or higher, and the operation of the crank mechanism can be kept smooth. , The pump 20 can be continuously operated in a stable state. At this time, the valve 28 for branching and taking out the warming gas may be kept open at all times.
The opening and closing control of the valve 28 may be automatically performed according to the temperature of the valve.
【００２６】したがって、本形態例に示す高圧ガス供給
設備においては、昇圧後の低温液化ガスを気化させるた
めの蒸発器３０に補助熱交換器３７を設置するととも
に、この補助熱交換器３７にポンプ２０で気化したガス
の一部又は全部を導入し、高温のスチームと熱交換させ
て加温した後、ポンプ２０の凍結防止用ガスとして供給
する経路である加温管２６を設けているので、低温での
作動不良が懸念されるクランク機構を収納した駆動部２
１を加温し、内部に充填されたオイルを所定温度以上に
保つことができる。これにより、オイルの潤滑作用が失
われることがなく、クランク機構の円滑な作動が維持さ
れ、ポンプ２０の昇圧性能を損なうことなく長時間の連
続運転が可能となる。Therefore, in the high-pressure gas supply equipment shown in this embodiment, an auxiliary heat exchanger 37 is installed in the evaporator 30 for evaporating the low-temperature liquefied gas after the pressure increase, and a pump is provided in the auxiliary heat exchanger 37. Since a part or all of the gas vaporized in 20 is introduced, heat is exchanged with high-temperature steam and heated, and then a heating pipe 26 is provided as a path for supplying as a freezing prevention gas of the pump 20. A drive unit 2 containing a crank mechanism that may cause malfunction at low temperatures
1 can be heated to keep the oil filled therein at a predetermined temperature or higher. As a result, the lubricating action of the oil is not lost, the smooth operation of the crank mechanism is maintained, and the continuous operation can be performed for a long time without impairing the boosting performance of the pump 20.
【００２７】また、本形態例に示す蒸発器３０において
は、温水層３２に設置した第一熱交換器３４で熱容量の
大きな温水と熱交換させて低温液化ガスを気化させた
後、スチーム層３１に設置した第二熱交換器３５で高温
のスチームと熱交換させてガスを加温するので、小型の
第二熱交換器３５で十分な加温性能を得ることができ、
蒸発器全体の小型を図れる。さらに、第二熱交換器３５
で供給ガスの設定温度以上にガスを加温した後、最後に
温水層３２に設置した第三熱交換器３６で熱容量の大き
な温水と熱交換させて所定の供給ガス温度に調節するよ
うにしているので、蒸発器３０から導出した供給ガス温
度の安定化が図れる。In the evaporator 30 shown in this embodiment, the low-temperature liquefied gas is vaporized by exchanging heat with hot water having a large heat capacity in the first heat exchanger 34 installed in the hot water layer 32, and then the steam layer 31 is formed. Since the gas is heated by exchanging heat with the high-temperature steam in the second heat exchanger 35 installed in the apparatus, sufficient heating performance can be obtained with the small second heat exchanger 35,
The entire evaporator can be reduced in size. Further, the second heat exchanger 35
After the gas is heated to a temperature equal to or higher than the set temperature of the supply gas, the third heat exchanger 36 installed in the hot water layer 32 finally exchanges heat with hot water having a large heat capacity to adjust the temperature to a predetermined supply gas. Therefore, the temperature of the supply gas derived from the evaporator 30 can be stabilized.
【００２８】さらに、スチーム加熱を併用して蒸発器３
０を小型化することにより、ポンプ２０と蒸発器３０と
を一つの設備ユニットとして一体化しても、トラック等
で運搬可能な大きさに納めることができるので、現地へ
の搬送や据付けが容易になり、ガス供給を迅速に開始す
ることができる。Further, the evaporator 3 is used in combination with steam heating.
By reducing the size of the pump unit 0, even if the pump 20 and the evaporator 30 are integrated as one equipment unit, the pump 20 and the evaporator 30 can be stored in a size that can be transported by truck or the like. Thus, gas supply can be started quickly.
【００２９】また、第二熱交換器３５でスチームと熱交
換後のガスの温度を供給ガスの設定温度よりも高く設定
し、第三熱交換器３６で熱交換後のガスの温度を第二熱
交換器３５で熱交換後のガスの温度より低く設定してお
くことにより、スチームと温水との熱容量の差及び温度
差を有効に利用して効率よく安定した温度調節を行うこ
とができる。The temperature of the gas after the heat exchange with the steam is set higher than the set temperature of the supply gas in the second heat exchanger 35, and the temperature of the gas after the heat exchange in the third heat exchanger 36 is set to the second temperature. By setting the temperature of the gas after the heat exchange in the heat exchanger 35 to be lower than that of the gas after the heat exchange, the temperature difference between the steam and the hot water and the temperature difference can be effectively used to perform the stable temperature control efficiently and efficiently.
【００３０】なお、本形態例では、補助熱交換器３７を
高温のスチーム層３１内に設置したが、温水層３２内に
設置するようにしてもよく、蒸発器２０の構造に応じて
任意の位置に設置することができる。例えば、スチーム
層３１と温水層３２とを別の熱交換槽に分けて形成した
蒸発器の場合は、スチーム層用熱交換槽と温水層用熱交
換槽のいずれに収納させるようにしてもよい。また、加
温ガスとしてポンプでの気化ガスを使用したが、ポンプ
で昇圧した後の低温液化ガスの一部あるいは気化ガスの
一部を利用することも可能である。In this embodiment, the auxiliary heat exchanger 37 is provided in the high-temperature steam layer 31. However, the auxiliary heat exchanger 37 may be provided in the hot water layer 32. Can be installed at a location. For example, in the case of an evaporator in which the steam layer 31 and the hot water layer 32 are formed separately in different heat exchange tanks, the evaporator may be stored in either the steam layer heat exchange tank or the hot water layer heat exchange tank. . Although the vaporized gas from the pump is used as the heating gas, a part of the low-temperature liquefied gas or a part of the vaporized gas after the pressure has been increased by the pump can be used.
【００３１】また、低温液化ガス供給源としてローリー
１０を使用したが、ユーザーが低温液化ガス貯槽を保有
している場合は、該貯槽の低温液化ガス取出管及びバラ
ンス管に前記吸入管２３及び前記返送管２５をそれぞれ
接続すればよい。さらに、吸入管２３や返送管２５を適
当な弁を介して分岐させておくことにより、複数のロー
リー、貯槽からの低温液化ガスを切換えて使用すること
ができる。また、熱交換槽３３を断熱構造に形成してお
くことにより、制御効率や熱交換効率の向上が図れる。Although the lorry 10 is used as a low-temperature liquefied gas supply source, if the user has a low-temperature liquefied gas storage tank, the low-temperature liquefied gas discharge pipe and the balance pipe of the storage tank are connected to the suction pipe 23 and the balance pipe. The return pipes 25 may be connected respectively. Further, by branching the suction pipe 23 and the return pipe 25 through appropriate valves, a plurality of lorries and low-temperature liquefied gas from the storage tank can be switched and used. Further, by forming the heat exchange tank 33 in a heat insulating structure, control efficiency and heat exchange efficiency can be improved.
【００３２】[0032]
【実施例】ローリー１０に搭載した０．３ＭＰａ、−１
９６℃の液体窒素をポンプ２０で１ＭＰａに昇圧し、蒸
発器３０で気化させて約２０℃で供給する実験を行っ
た。熱交換槽３３におけるスチーム層３１は約２．７ｍ
３、温水層３２は約２ｍ３とし、スチームは１３０℃、
０．３ＭＰａで供給した。温水層３１にスチームを供給
する第二スチーム管４２の第二調節弁４４は、温度指示
調節計５５で測定した温水の温度が１５℃を超えたら閉
じ、１５℃未満になったら開くように設定した。また、
スチーム層３１にスチームを供給する第一スチーム管４
１の第一調節弁４３は、温度指示調節計５２で測定した
供給ガスの温度が２０℃を超えたら閉じ、２０℃未満に
なったら開くように設定した。[Example] 0.3 MPa, -1 mounted on a lorry 10
An experiment was conducted in which liquid nitrogen at 96 ° C. was boosted to 1 MPa by the pump 20, vaporized by the evaporator 30, and supplied at about 20 ° C. The steam layer 31 in the heat exchange tank 33 is about 2.7 m.
3, the hot water layer 32 was about 2m 3, steam 130 ° C.,
It was supplied at 0.3 MPa. The second control valve 44 of the second steam pipe 42 for supplying steam to the hot water layer 31 is set to close when the temperature of the hot water measured by the temperature indicating controller 55 exceeds 15 ° C. and to open when the temperature of the hot water falls below 15 ° C. did. Also,
First steam pipe 4 for supplying steam to steam layer 31
The first first control valve 43 was set to close when the temperature of the supply gas measured by the temperature indicating controller 52 exceeded 20 ° C., and to open when the temperature became lower than 20 ° C.
【００３３】各熱交換器３４，３５，３６，３７の容量
は、第一熱交換器３４で気化した窒素ガスの温度が約０
℃、第二熱交換器３５で加温された窒素ガスの温度が約
３５℃、第三熱交換器３６で冷却された窒素ガスの温度
が約２０℃になるように設定している。また、補助熱交
換器３７は、ポンプ２０からの気化ガス（−１００℃）
が約５００ｍ３／ｈで流れたときに、加温ガスの温度が
約３０℃になるように設定した。The capacity of each of the heat exchangers 34, 35, 36, and 37 is such that the temperature of the nitrogen gas vaporized in the first heat exchanger 34 is about 0.
° C, the temperature of the nitrogen gas heated in the second heat exchanger 35 is set to about 35 ° C, and the temperature of the nitrogen gas cooled in the third heat exchanger 36 is set to about 20 ° C. Further, the auxiliary heat exchanger 37 is provided with a vaporized gas (−100 ° C.) from the pump 20.
Was set so that the temperature of the heating gas became about 30 ° C. when the gas flowed at about 500 m 3 / h.
【００３４】このときの熱交換槽３３の大きさは、直径
約１．２ｍ、外径約２．２ｍであり、ポンプ１０を一体
化したときの大きさは、幅約６．８ｍ、奥行き約２．３
ｍ、最大高さ約２．６ｍであり、空体重量は８５００ｋ
ｇであった。したがって、１０ｔ積トラックにて運搬可
能であり、トラックに付設したクレーンで積み卸しが可
能である。また、ボイラーユニット４０は、幅２．７
ｍ、奥行き２．１ｍ、高さ２．７ｍ、空体重量３０００
ｋｇであった。The size of the heat exchange tank 33 at this time is about 1.2 m in diameter and about 2.2 m in outer diameter, and the size when the pump 10 is integrated is about 6.8 m in width and about 6.8 m in depth. 2.3
m, the maximum height is about 2.6m, and the body weight is 8500k
g. Therefore, it can be transported by a 10t truck, and can be unloaded and loaded by a crane attached to the truck. The boiler unit 40 has a width of 2.7.
m, depth 2.1m, height 2.7m, body weight 3000
kg.
【００３５】このような条件で、ガス使用設備に１ＭＰ
ａ、約２０℃の窒素ガスを５０００ｍ３／ｈで連続供給
した。その結果、供給ガスにおける圧力の変動はほとん
どなく、供給ガスの平均温度は２０．３℃であった。そ
して、１６０時間連続して運転を行ったが、ポンプ２０
は、凍結したり、オイルの粘性が高くなったりすること
なく、安定した昇圧運転を継続することができた。Under these conditions, the gas-using equipment must be
a, Nitrogen gas at about 20 ° C. was continuously supplied at 5000 m 3 / h. As a result, there was almost no change in pressure in the supply gas, and the average temperature of the supply gas was 20.3 ° C. Then, the operation was continuously performed for 160 hours.
As a result, it was possible to continue a stable pressure increasing operation without freezing or increasing the viscosity of the oil.
【００３６】[0036]
【発明の効果】以上説明したように、本発明の高圧ガス
供給設備によれば、蒸発器で加温したガスを、ポンプの
凍結防止用ガスとしてポンプに供給することにより、運
転時のポンプを所定温度に加温することができるので、
長時間連続運転を行ってもポンプが冷却されて運転不能
に陥ることがない。As described above, according to the high-pressure gas supply equipment of the present invention, the gas heated by the evaporator is supplied to the pump as a gas for preventing freezing of the pump, so that the pump during operation can be operated. Since it can be heated to a predetermined temperature,
Even if the pump is operated continuously for a long time, the pump is not cooled and the pump cannot be operated.
【００３７】また、高温高圧のスチームを使用すること
によって蒸発器の小型化が図れ、大量のガスを供給する
設備であっても、ポンプやボイラーユニットと蒸発器と
を、トラック等で容易に運搬可能な大きさ及び重量の範
囲内でユニット化することが可能となる。さらに、熱媒
体としてスチームと温水とを組合わせることにより、供
給ガスの温度調節を容易にかつ確実に行うことが可能と
なり、所定温度のガスを安定して供給することができ
る。Further, by using high-temperature and high-pressure steam, the size of the evaporator can be reduced, and even if the equipment supplies a large amount of gas, the pump, the boiler unit and the evaporator can be easily transported by truck or the like. It is possible to unitize within the range of possible size and weight. Further, by combining steam and hot water as the heat medium, the temperature of the supply gas can be easily and reliably adjusted, and the gas at a predetermined temperature can be supplied stably.
【図１】 本発明の高圧ガス供給設備の一形態例を示す
系統図である。FIG. 1 is a system diagram showing one embodiment of a high-pressure gas supply facility of the present invention.
１０…ローリー、１１…弁、１２…低温液化ガス取出
管、１３…弁、１４…バランス管、２０…ポンプ、２１
…駆動部、２２…圧縮部、２３…吸入管、２４…吐出
管、２５…返送管、２６…加温管、２７…分岐管、２８
…弁、３０…蒸発器、３１…スチーム層、３２…温水
層、３３…熱交換槽、３４…第一熱交換器、３５…第二
熱交換器、３６…第三熱交換器、３７…補助熱交換器、
４０…ボイラーユニット、４１…第一スチーム管、４２
…第二スチーム管、４３…第一調節弁、４４…第二調節
弁、４５…ドレン、５１…ガス供給管、５２…温度指示
調節計、５３…流量指示調節計、５４…演算器、５５…
温度指示調節計Reference numeral 10: lorry, 11: valve, 12: low-temperature liquefied gas outlet pipe, 13: valve, 14: balance pipe, 20: pump, 21
... Drive unit 22, compression unit 23, suction pipe 24, discharge pipe 25, return pipe 26, heating pipe 27, branch pipe 28
... Valve, 30 ... Evaporator, 31 ... Steam layer, 32 ... Hot water layer, 33 ... Heat exchange tank, 34 ... First heat exchanger, 35 ... Second heat exchanger, 36 ... Third heat exchanger, 37 ... Auxiliary heat exchanger,
40 ... boiler unit, 41 ... first steam pipe, 42
... second steam pipe, 43 ... first control valve, 44 ... second control valve, 45 ... drain, 51 ... gas supply pipe, 52 ... temperature indication controller, 53 ... flow indication controller, 54 ... calculator, 55 …
Temperature indicating controller
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 忠史 東京都港区西新橋１−16−７ 日本酸素株 式会社内 (72)発明者 高橋 伸之 東京都港区西新橋１−16−７ 日本酸素株 式会社内 (72)発明者 石川 直良 神奈川県横浜市鶴見区矢向１−15−１ 日 酸工業株式会社内 (72)発明者 高橋 利行 神奈川県横浜市鶴見区矢向１−15−１ 日 酸工業株式会社内 Ｆターム(参考） 3E073 AA01 DB04 DC11 3K068 AA02 AB22 AB23 BB01 BB02 BB03 BB23 BB24 BB25 CA01 CA15 CA27 CA28 CB01 EA03 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tadashi Sato 1-16-7 Nishi-Shimbashi, Minato-ku, Tokyo Nippon Sanso Corporation (72) Inventor Nobuyuki Takahashi 1-16-7, Nishi-Shimbashi, Minato-ku, Tokyo Japan Within Oxygen Co., Ltd. (72) Inventor Naora Ishikawa, 1-15-1 Yamu, Tsurumi-ku, Yokohama, Kanagawa Prefecture Inside Acid Industry Co., Ltd. (72) Toshiyuki Takahashi 1-15-1, Yamu, Tsurumi-ku, Yokohama, Kanagawa, Japan F term (reference) in Acid Industry Co., Ltd. 3E073 AA01 DB04 DC11 3K068 AA02 AB22 AB23 BB01 BB02 BB03 BB23 BB24 BB25 CA01 CA15 CA27 CA28 CB01 EA03
Claims (5)
ンプで昇圧された低温液化ガスを気化させる蒸発器とを
備えた高圧ガス供給設備において、前記蒸発器は、スチ
ーム、温水等の熱媒体が導入される熱交換槽内に、前記
昇圧後の低温液化ガスを導入して気化させる熱交換器
と、前記ポンプで昇圧した低温液化ガスの一部又は該ポ
ンプ内で気化したガスの少なくとも一部を導入して加温
する補助熱交換器とを収納するとともに、該補助熱交換
器で加温されたガスを前記ポンプの凍結防止用ガスとし
て供給する経路を備えていることを特徴とする高圧ガス
供給設備。1. A high-pressure gas supply system comprising: a pump for pressurizing a low-temperature liquefied gas; and an evaporator for vaporizing the low-temperature liquefied gas pressurized by the pump, wherein the evaporator is a heat medium such as steam or hot water. A heat exchanger for introducing and vaporizing the pressurized low-temperature liquefied gas into a heat exchange tank into which is introduced, and a part of the low-temperature liquefied gas pressurized by the pump or at least one of the gas vaporized in the pump. And a path for supplying a gas heated by the auxiliary heat exchanger as an antifreezing gas for the pump. High pressure gas supply equipment.
としてスチーム層及び温水層の二層を有し、前記熱交換
器は、前記温水層内に配置されて前記昇圧後の低温液化
ガスが導入される第一熱交換器と、前記スチーム層内に
配置されて該第一熱交換器で熱交換後のガスが導入され
る第二熱交換器と、前記温水層内に配置されて前記第二
熱交換器で熱交換後のガスが導入される第三熱交換器と
を有していることを特徴とする請求項１記載の高圧ガス
供給設備。2. The evaporator has two layers of a steam layer and a hot water layer as a heat medium in the heat exchange tank, and the heat exchanger is disposed in the hot water layer and has a low temperature after the pressure increase. A first heat exchanger into which a liquefied gas is introduced, a second heat exchanger which is arranged in the steam layer and into which gas after heat exchange is introduced in the first heat exchanger, and which is arranged in the hot water layer The high-pressure gas supply equipment according to claim 1, further comprising a third heat exchanger that is supplied with the gas after the heat exchange in the second heat exchanger.
度が、該高圧ガス供給設備から高圧ガス使用設備に供給
するガスの設定温度よりも高く設定され、前記第三熱交
換器で熱交換後のガスの温度が、第二熱交換器で熱交換
後のガスの温度より低く設定されていることを特徴とす
る請求項２記載の高圧ガス供給設備。3. The temperature of the gas after heat exchange in the second heat exchanger is set higher than a set temperature of gas supplied from the high-pressure gas supply facility to the high-pressure gas use facility, and the third heat exchanger 3. The high-pressure gas supply equipment according to claim 2, wherein the temperature of the gas after heat exchange is set lower than the temperature of the gas after heat exchange in the second heat exchanger.
としてスチームを供給するボイラーユニットを備えてい
ることを特徴とする請求項１記載の高圧ガス供給設備。4. The high-pressure gas supply equipment according to claim 1, wherein the evaporator includes a boiler unit that supplies steam as a heat medium into the heat exchange tank.
備に供給するガスの温度を測定する温度測定手段と、該
温度測定手段で測定したガスの温度に基づいて前記熱交
換槽内に供給するスチーム量を調節するスチーム供給量
調節手段とを備えていることを特徴とする請求項５記載
の高圧ガス供給設備。5. A temperature measuring means for measuring a temperature of a gas supplied from the evaporator and supplied to a high-pressure gas use facility, and supplied to the heat exchange tank based on the temperature of the gas measured by the temperature measuring means. The high-pressure gas supply equipment according to claim 5, further comprising steam supply amount adjusting means for adjusting the amount of steam to be supplied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001148939A JP4731042B2 (en) | 2001-05-18 | 2001-05-18 | High pressure gas supply equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001148939A JP4731042B2 (en) | 2001-05-18 | 2001-05-18 | High pressure gas supply equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002340297A true JP2002340297A (en) | 2002-11-27 |
| JP4731042B2 JP4731042B2 (en) | 2011-07-20 |
Family
ID=18994176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001148939A Expired - Fee Related JP4731042B2 (en) | 2001-05-18 | 2001-05-18 | High pressure gas supply equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4731042B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005291324A (en) * | 2004-03-31 | 2005-10-20 | Taiyo Nippon Sanso Corp | Operation method for liquefied gas vaporizing device |
| JP2015158225A (en) * | 2014-02-24 | 2015-09-03 | 帝人エンジニアリング株式会社 | liquefied hydrogen vaporization system |
| KR20180029793A (en) * | 2016-09-13 | 2018-03-21 | 이상선 | Hybrid Heating Vaporizer |
| CN114183687A (en) * | 2021-11-29 | 2022-03-15 | 江苏国富氢能技术装备股份有限公司 | Liquid hydrogen discharging device of liquid hydrogen refueling station and liquid discharging method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101563856B1 (en) * | 2013-11-29 | 2015-10-29 | 삼성중공업 주식회사 | System for supplying fuel gas in ships |
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| JPS6412200A (en) * | 1987-07-07 | 1989-01-17 | Tokyo Gas Co Ltd | Heating system of underground tank for low temperature liquefied gas |
| JPH05280696A (en) * | 1992-03-31 | 1993-10-26 | Osaka Gas Co Ltd | Method and apparatus for liquefying and gasifying town gas |
| JPH06117599A (en) * | 1992-10-01 | 1994-04-26 | Ishikawajima Harima Heavy Ind Co Ltd | Device for feeding gas from lng terminal |
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|---|---|---|---|---|
| JP2587908Y2 (en) * | 1993-06-14 | 1998-12-24 | 東陶機器株式会社 | Pump with heater for freezing prevention |
| NO180426C (en) * | 1995-03-16 | 1997-04-16 | Kvaerner Moss Tech As | Device for heat exchangers |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6412200A (en) * | 1987-07-07 | 1989-01-17 | Tokyo Gas Co Ltd | Heating system of underground tank for low temperature liquefied gas |
| JPH05280696A (en) * | 1992-03-31 | 1993-10-26 | Osaka Gas Co Ltd | Method and apparatus for liquefying and gasifying town gas |
| JPH06117599A (en) * | 1992-10-01 | 1994-04-26 | Ishikawajima Harima Heavy Ind Co Ltd | Device for feeding gas from lng terminal |
| JPH06185696A (en) * | 1992-12-21 | 1994-07-08 | Tokyo Gas Co Ltd | Evaporating device for low temperature liquefied gas |
| JP2002340484A (en) * | 2001-05-15 | 2002-11-27 | Nippon Sanso Corp | Evaporator |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005291324A (en) * | 2004-03-31 | 2005-10-20 | Taiyo Nippon Sanso Corp | Operation method for liquefied gas vaporizing device |
| JP4567358B2 (en) * | 2004-03-31 | 2010-10-20 | 大陽日酸株式会社 | Operation method of liquefied gas vaporizer |
| JP2015158225A (en) * | 2014-02-24 | 2015-09-03 | 帝人エンジニアリング株式会社 | liquefied hydrogen vaporization system |
| KR20180029793A (en) * | 2016-09-13 | 2018-03-21 | 이상선 | Hybrid Heating Vaporizer |
| KR101917349B1 (en) | 2016-09-13 | 2018-11-09 | 주식회사 베스트 | Hybrid Heating Vaporizer |
| CN114183687A (en) * | 2021-11-29 | 2022-03-15 | 江苏国富氢能技术装备股份有限公司 | Liquid hydrogen discharging device of liquid hydrogen refueling station and liquid discharging method thereof |
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| Publication number | Publication date |
|---|---|
| JP4731042B2 (en) | 2011-07-20 |
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