JP2003214777A - Liquefied gas evaporator - Google Patents
Liquefied gas evaporatorInfo
- Publication number
- JP2003214777A JP2003214777A JP2002011170A JP2002011170A JP2003214777A JP 2003214777 A JP2003214777 A JP 2003214777A JP 2002011170 A JP2002011170 A JP 2002011170A JP 2002011170 A JP2002011170 A JP 2002011170A JP 2003214777 A JP2003214777 A JP 2003214777A
- Authority
- JP
- Japan
- Prior art keywords
- liquefied gas
- flow path
- gas flow
- liquefied
- heat medium
- 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.)
- Abandoned
Links
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、液化ガス蒸発装置
に係り、特に、プレート式熱交換器で形成した液化ガス
蒸発装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquefied gas evaporator, and more particularly to a liquefied gas evaporator formed by a plate heat exchanger.
【0002】[0002]
【従来の技術】従来、液化ガス蒸発装置としては、特開
平10−30794号公報や特開平2000−1710
29号公報などのように、液化ガスが通流する熱交換用
管路を熱媒が収容された槽内に配置し、この槽内の熱媒
を加熱することで、熱媒の熱により熱交換用管路内の液
相の液化ガスを加熱して蒸発させ、気相の液化ガスを生
成している。2. Description of the Related Art Hitherto, as a liquefied gas vaporizer, Japanese Patent Laid-Open Nos. 10-30794 and 2000-1710 have been used.
As disclosed in Japanese Patent No. 29, etc., a heat exchange pipe line through which a liquefied gas flows is arranged in a tank containing a heat medium, and the heat medium in this tank is heated to generate heat by the heat of the heat medium. The liquid phase liquefied gas in the exchange pipe is heated and evaporated to generate the gas phase liquefied gas.
【0003】ところで、従来の液化ガス蒸発装置では、
熱媒を収容した槽が必要であるため、この槽によって装
置の大きさが制限されてしまう場合があり、小型化が難
しい。これに対して、本願の発明者らは、一方向に延在
する液化ガス流路を、その延在方向に交わる方向に間隔
をおいて複数配列し、この複数の液化ガス流路間の空間
を熱媒流路とした構成の熱交換器、すなわちプレート形
またはプレート式熱交換器と称される熱交換器によって
液化ガス蒸発装置を形成することで液化ガス蒸発装置を
小型化することを考えている。By the way, in the conventional liquefied gas evaporator,
Since a tank containing the heat medium is required, the size of the device may be limited by this tank, and it is difficult to reduce the size. On the other hand, the inventors of the present application arranged a plurality of liquefied gas flow paths extending in one direction at intervals in a direction intersecting the extending direction, and provided spaces between the plurality of liquefied gas flow paths. Considering the miniaturization of the liquefied gas evaporator by forming the liquefied gas evaporator with a heat exchanger configured as a heat medium flow path, that is, a heat exchanger called a plate type or plate type heat exchanger. ing.
【発明が解決しようとする課題】ここで、プレート式熱
交換器によって形成した液化ガス蒸発装置では、液相の
液化ガスは、気相の液化ガスの消費量と液相の液化ガス
の蒸発量がバランスするまで液化ガス流路に流入する。
したがって、液化ガスの消費量に応じて、複数の液化ガ
ス流路のうち、液相の液化ガスを液化ガス流路に流入さ
せるための流入部が設けられた液化ガス流路だけに液相
の液化ガスが流入している状態や、流入部が設けられた
液化ガス流路以外の液化ガス流路にも液相の液化ガスが
流入していいる状態などが生じる。Here, in the liquefied gas evaporation device formed by the plate heat exchanger, the liquefied gas in the liquid phase is the consumption amount of the liquefied gas in the gas phase and the evaporation amount of the liquefied gas in the liquid phase. Flow into the liquefied gas flow path until they are balanced.
Therefore, depending on the consumption amount of the liquefied gas, among the plurality of liquefied gas flow paths, only the liquefied gas flow path provided with the inflow part for flowing the liquefied gas in the liquid phase into the liquefied gas flow path A state in which the liquefied gas is flowing in, a state in which the liquefied gas in the liquid phase is also flowing into a liquefied gas flow path other than the liquefied gas flow path in which the inflow part is provided, and the like occur.
【0004】液化ガス蒸発装置の液化ガス流路の流入部
と、液化ガスが収容された容器とが、減圧弁が設けられ
ていない液管路を介して連結されている場合、流入部が
設けられた液化ガス流路だけに液相の液化ガスが流入し
ている状態で、液化ガスの消費が停止すると、この液化
ガス流路内の液相の液化ガスが蒸発することにより液化
ガス流路内の圧力が上昇しようとする。このため、流入
部が設けられた液化ガス流路内の液相の液化ガスは、容
器方向に戻される。このとき、液相の液化ガスが、液管
路の液化ガス流路との連結部つまり流入部近傍部分にま
で戻り、液化ガス流路内に液相の液化ガスが無くなる
と、液相の液化ガスの蒸発が無くなる。これにより、液
相の液化ガスを容器方向へ戻す力が無くなり、液相の液
化ガスは、液管路の液化ガス流路との連結部近傍部分に
留まっている。When the inflow part of the liquefied gas flow path of the liquefied gas evaporator and the container containing the liquefied gas are connected via a liquid pipe line not provided with a pressure reducing valve, the inflow part is provided. If the liquefied gas in the liquefied gas stops flowing when the liquefied gas in the liquefied gas flows into the liquefied gas flow path, the liquefied gas in the liquefied gas flow path evaporates. The pressure inside is about to rise. Therefore, the liquefied gas in the liquid phase in the liquefied gas channel provided with the inflow portion is returned toward the container. At this time, the liquefied gas in the liquid phase returns to the connection part of the liquid pipeline with the liquefied gas flow path, that is, in the vicinity of the inflow part, and when there is no liquefied gas in the liquid phase in the liquefied gas flow path, liquefaction of the liquid phase Evaporation of gas disappears. As a result, the force for returning the liquefied gas in the liquid phase to the container is lost, and the liquefied gas in the liquid phase remains in the vicinity of the connecting portion of the liquid pipeline with the liquefied gas flow path.
【0005】一方、流入部が設けられた液化ガス流路以
外の液化ガス流路にも液相の液化ガスが流入している状
態では、液化ガスの消費が停止すると、液化ガス流路の
設置方向や複数の液化ガス流路の連通位置などによって
は、流入部が設けられた液化ガス流路以外の液化ガス流
路内にある液相の液化ガスは、容器方向に戻ることがで
きない場合がある。このとき、流入部が設けられた液化
ガス流路内の液相の液化ガスが容器方向に戻され、流入
部が設けられた液化ガス流路内の液相の液化ガスが無く
なっても、流入部が設けられた液化ガス流路以外の液化
ガス流路内に残っている液相の液化ガスの蒸発により、
液化ガス流路内の圧力が上昇しようとする。このため、
流入部が設けられた液化ガス流路と容器間にある液相の
液化ガスは、液管路の液化ガス流路との連結部近傍部分
に留まらず、容器方向にさらに戻され、場合によって
は、液管路内のほとんどの液相の液化ガスが容器に戻さ
れてしまい、液管路内が気相状態になることもある。On the other hand, when the liquefied gas in the liquid phase is flowing into the liquefied gas passages other than the liquefied gas passage provided with the inflow portion, the liquefied gas passage is installed when the consumption of the liquefied gas is stopped. Depending on the direction and the communication position of a plurality of liquefied gas channels, the liquefied gas in the liquid phase in the liquefied gas channels other than the liquefied gas channel provided with the inflow part may not be able to return to the container direction. is there. At this time, even if the liquid phase liquefied gas in the liquefied gas flow path provided with the inflow part is returned to the container direction and the liquid phase liquefied gas in the liquefied gas flow path provided with the inflow part disappears, By the evaporation of the liquefied gas in the liquid phase remaining in the liquefied gas channel other than the liquefied gas channel in which the section is provided,
The pressure in the liquefied gas channel tends to rise. For this reason,
The liquefied gas in the liquid phase between the container and the liquefied gas flow path provided with the inflow portion does not remain in the vicinity of the connection part of the liquid pipeline with the liquefied gas flow path, and is further returned in the container direction. However, most of the liquefied gas in the liquid pipeline may be returned to the container, and the interior of the liquid pipeline may be in a vapor phase state.
【0006】そして、液管路の液化ガス流路との連結部
近傍部分に留まっていない状態や、液管路内が気相状態
になると、気相の液化ガスの消費が再開された場合に、
液化ガス蒸発装置には管路内の気相の液化ガスが流入し
た後に液相の液化ガスが流入してくることになる。この
ため、液相の液化ガスが流入してくるまでは、液化ガス
流路内での液相の液化ガスの蒸発が無く、液化ガス蒸発
装置から供給される気相の液化ガスの圧力が降下してし
まい、気相の液化ガスの供給安定性が低下してしまう場
合がある。[0006] When the consumption of the liquefied gas in the gas phase is restarted when the liquid pipeline does not remain in the vicinity of the connecting portion with the liquefied gas flow path or when the inside of the liquid pipeline is in the gas phase state. ,
The liquefied gas in the liquid phase will flow into the liquefied gas evaporator after the liquefied gas in the gas phase in the pipeline is introduced. Therefore, until the liquefied gas in the liquid phase flows in, there is no evaporation of the liquefied gas in the liquid phase in the liquefied gas flow path, and the pressure of the liquefied gas in the gas phase supplied from the liquefied gas evaporator decreases. In some cases, the gas phase liquefied gas supply stability is reduced.
【0007】本発明の第1の課題は、液化ガス蒸発装置
を小型化し、かつ気相の液化ガスの供給安定性の低下を
抑えることにある。A first object of the present invention is to reduce the size of the liquefied gas vaporizer and to prevent the deterioration of the supply stability of liquefied gas in the gas phase.
【0008】また、減圧弁が設けられた液管路を介して
液化ガス蒸発装置と液化ガスが収容された容器とが連結
された場合、気相の液化ガスの消費が停止したとき、減
圧弁が抵抗となり、液化ガス流路内の液相の液化ガスが
容器の方向に戻り難い。また、プレート式熱交換器は、
従来の液化ガス蒸発装置の熱交換用管路などに比べて液
化ガス流路の内容積が少ない。このため、液化ガス流路
内にある液相の液化ガスの量によっては、液化ガス流路
内の圧力が上昇し、例えば、気相の液化ガスを供給する
ためのガス管路や液化ガス蒸発装置の液化ガス流路内の
圧力が予め設定した圧力以上に上昇するのを防ぐために
設けられた安全弁などが作動してしまう場合がある。Further, when the liquefied gas vaporizer and the container containing the liquefied gas are connected via a liquid pipe provided with the pressure reducing valve, when the consumption of the liquefied gas in the gas phase is stopped, the pressure reducing valve Becomes resistance, and it is difficult for the liquefied gas in the liquid phase in the liquefied gas channel to return toward the container. In addition, the plate heat exchanger is
The internal volume of the liquefied gas passage is smaller than that of the heat exchange pipe of the conventional liquefied gas evaporator. Therefore, depending on the amount of the liquefied gas in the liquefied gas in the liquefied gas channel, the pressure in the liquefied gas channel rises, and for example, a gas pipeline for supplying the liquefied gas in the vapor phase or liquefied gas evaporation. In some cases, a safety valve or the like provided to prevent the pressure in the liquefied gas passage of the device from rising above a preset pressure may be activated.
【0009】ここで、液化ガス蒸発装置で液相の液化ガ
スの蒸発を開始した状態、つまり液化ガス蒸発装置の運
転の初期状態では、液化ガスと、液化ガス蒸発装置の液
化ガス流路の液化ガスとの接触面の表面温度との温度差
が、膜沸騰となるような温度差となる場合がある。膜沸
騰は、核沸騰よりも熱交換効率が低く、液化ガスの蒸発
量が少ない。このため、液化ガス蒸発装置の運転初期で
膜沸騰状態のときには、液化ガス流路内にある液相の液
化ガスの量が核沸騰状態のときに比べて多くなる。この
ように、液化ガス蒸発装置の運転を開始してからある程
度の時間が経過して、液化ガス流路の内面つまり伝熱面
の温度が下がって核沸騰状態になれば、気相の液化ガス
の消費が停止しても液化ガス流路内の圧力が上昇し、安
全弁などが作動してしまうような状態になり難い。しか
し、膜沸騰状態のときに気相の液化ガスの消費が停止す
ると、液化ガス流路の設置方向や複数の液化ガス流路の
連通位置などによっては、液化ガス流路内に残留する液
相の液化ガスの量が核沸騰状態のときよりも多く、液化
ガス流路内の圧力が上昇し、安全弁などが作動してしま
う場合がある。Here, in a state where the liquefied gas vaporizer starts to vaporize the liquefied gas in the liquid phase, that is, in the initial state of operation of the liquefied gas vaporizer, the liquefied gas and the liquefied gas flow passage of the liquefied gas vaporizer are liquefied. The temperature difference from the surface temperature of the contact surface with the gas may be a temperature difference that causes film boiling. Film boiling has a lower heat exchange efficiency than nucleate boiling and a smaller amount of liquefied gas is evaporated. For this reason, in the film boiling state in the initial operation of the liquefied gas evaporator, the amount of the liquefied gas in the liquid phase in the liquefied gas flow path is larger than that in the nucleate boiling state. In this way, if a certain amount of time elapses after the operation of the liquefied gas evaporator is started and the temperature of the inner surface of the liquefied gas flow path, that is, the heat transfer surface is lowered to the nucleate boiling state, the gas phase liquefied gas Even if the consumption of gas is stopped, the pressure in the liquefied gas flow channel rises, and it is difficult for the safety valve to operate. However, when the consumption of the liquefied gas in the vapor phase is stopped during the film boiling state, the liquid phase remaining in the liquefied gas flow channel may be changed depending on the installation direction of the liquefied gas flow channel and the communication position of the plurality of liquefied gas flow channels. The amount of the liquefied gas is larger than that in the nucleate boiling state, and the pressure in the liquefied gas passage increases, and the safety valve or the like may be activated.
【0010】これに対して、気相の液化ガスの消費が停
止したときの液化ガス流路内の圧力の上昇を低減するた
めに、アキュムレータを設けることが考えられる。しか
し、液化ガス蒸発装置にアキュムレータを設けると、ア
キュムレータによって液化ガス蒸発装置の大きさが制限
され、液化ガス蒸発装置の小型化ができなくなる。On the other hand, it is conceivable to provide an accumulator in order to reduce the increase in the pressure in the liquefied gas passage when the consumption of the gas phase liquefied gas is stopped. However, when the liquefied gas vaporizer is provided with an accumulator, the size of the liquefied gas vaporizer is limited by the accumulator, and the liquefied gas vaporizer cannot be downsized.
【0011】本発明の第2の課題は、液化ガス蒸発装置
を小型化し、かつ気相の液化ガスの消費が停止したとき
の液化ガス流路内の圧力の上昇を低減することにある。A second object of the present invention is to reduce the size of the liquefied gas evaporator and reduce the increase in the pressure in the liquefied gas flow channel when the consumption of the vaporized liquefied gas is stopped.
【0012】[0012]
【課題を解決するための手段】本発明の液化ガス蒸発装
置は、縦方向に延在する液化ガス流路を横方向に間隔を
おいて複数配列し、この複数の液化ガス流路間の空間を
熱媒流路とし、この熱媒流路を通流する加熱された熱媒
で液化ガス流路内を通流する液化ガスを加熱するもので
あり、隣り合う液化ガス流路は、この液化ガス流路の上
側端部と下側端部の両方で互いに連通しており、液化ガ
ス流路へ液化ガスが流入する流入部は、液化ガス流路の
下側端部に設けられ、前記液化ガス流路から液化ガスが
流出する流出部は、前記液化ガス流路の上側端部に設け
られている構成とすることにより上記第1の課題を解決
する。In the liquefied gas evaporation apparatus of the present invention, a plurality of liquefied gas passages extending in the vertical direction are arranged at intervals in the lateral direction, and spaces between the plurality of liquefied gas passages are arranged. Is used as a heat medium flow path, and the liquefied gas flowing through the liquefied gas flow path is heated by the heated heat medium flowing through this heat medium flow path. The inflow part, which communicates with each other at both the upper end and the lower end of the gas flow passage, and through which the liquefied gas flows into the liquefied gas flow passage, is provided at the lower end of the liquefied gas flow passage, The first problem can be solved by providing the outflow portion, through which the liquefied gas flows out from the gas passage, at the upper end of the liquefied gas passage.
【0013】容器に収容された液相の液化ガスを液化ガ
ス蒸発装置に導く液管路に減圧弁が設けられていない場
合は、このような構成の液化ガス蒸発装置とする。この
ような構成の液化ガス蒸発装置とすれば、縦方向つまり
上下方向に延在する液化ガス流路が横方向に間隔をおい
て複数配列されており、隣り合う液化ガス流路が上側端
部と下側端部で連通されているため、複数の液化ガス流
路を並列に連結したような状態となっている。When the pressure reducing valve is not provided in the liquid pipe for guiding the liquefied gas in the liquid phase stored in the container to the liquefied gas evaporator, the liquefied gas evaporator having such a structure is used. According to the liquefied gas evaporation device having such a configuration, a plurality of liquefied gas flow channels extending in the vertical direction, that is, the vertical direction are arranged at intervals in the horizontal direction, and adjacent liquefied gas flow channels are located at the upper end portion. Since it is communicated with the lower end portion, a plurality of liquefied gas flow paths are connected in parallel.
【0014】このため、気相の液化ガスの消費が停止し
た場合、流入部が設けられた液化ガス流路以外の液化ガ
ス流路に液相の液化ガスが流入していても、液相の液化
ガスの蒸発によって液化ガス流路内の圧力が上昇しよう
とすると、流入部が設けられた液化ガス流路以外の液化
ガス流路内にある液相の液化ガスは、下側端部の連通部
分を介して、流入部が設けられた液化ガス流路側に戻さ
れる。そして、流入部が設けられた液化ガス流路内にあ
る液相の液化ガスが、液管路の液化ガス流路との連結部
近傍部分つまり流入部近傍部分まで戻り、各液化ガス流
路内に液相の液化ガスが無くなると、液相の液化ガスの
蒸発が無くなる。したがって、プレート式熱交換器で液
化ガス蒸発装置を形成しても、気相の液化ガスの供給安
定性が低下し難く、液化ガス蒸発装置を小型化でき、か
つ気相の液化ガスの供給安定性の低下を抑えることがで
きる。Therefore, when the consumption of the liquefied gas in the gas phase is stopped, even if the liquefied gas in the liquid phase is flowing into the liquefied gas passages other than the liquefied gas passage provided with the inflow portion, When the pressure in the liquefied gas flow channel rises due to the evaporation of the liquefied gas, the liquefied gas in the liquid phase in the liquefied gas flow channels other than the liquefied gas flow channel in which the inflow part is provided is connected to the lower end portion. Through the portion, it is returned to the liquefied gas flow path side where the inflow portion is provided. Then, the liquefied gas in the liquid phase in the liquefied gas flow path provided with the inflow part returns to the portion near the connection part of the liquid pipeline with the liquefied gas flow path, that is, the part near the inflow part, and in each liquefied gas flow path When the liquefied gas in the liquid phase disappears, the evaporation of the liquefied gas in the liquid phase disappears. Therefore, even if the liquefied gas evaporation device is formed by the plate heat exchanger, the supply stability of the liquefied gas in the gas phase does not easily deteriorate, the liquefied gas evaporation device can be downsized, and the supply of the liquefied gas in the gas phase is stable. It is possible to suppress deterioration of sex.
【0015】また、本発明の液化ガス蒸発装置は、横方
向に延在する液化ガス流路を縦方向に間隔をおいて複数
配列し、この複数の液化ガス流路間の空間を熱媒流路と
し、この熱媒流路を通流する加熱された熱媒で液化ガス
流路内を通流する液化ガスを加熱してなり、液化ガス流
路へ液化ガスが流入する流入部には、減圧弁が設けられ
た管路が連結されるものであり、複数の液化ガス流路
は、これら各液化ガス流路の端部で互いに連通し、直列
に連結されて蛇行状の流路を形成し、液化ガス流路へ液
化ガスが流入する流入部及び液化ガス流路から液化ガス
が流出する流出部は、液化ガス流路の隣り合う液化ガス
流路と連通していない側の端部に各々設けられ、かつ液
化ガス流路へ液化ガスが流入する流入部は、上側に位置
する液化ガス流路に、液化ガス流路から液化ガスが流出
する流出部は、下側に位置する液化ガス流路に設けられ
ている構成とすることにより上記第2の課題を解決す
る。Further, in the liquefied gas evaporation apparatus of the present invention, a plurality of liquefied gas passages extending in the lateral direction are arranged at intervals in the vertical direction, and a space between the plurality of liquefied gas passages is used as a heat transfer medium. As a passage, the liquefied gas flowing in the liquefied gas channel is heated by the heated heat medium flowing in the heat medium channel, and the inflow part where the liquefied gas flows into the liquefied gas channel is A pipe provided with a pressure reducing valve is connected, and a plurality of liquefied gas flow paths communicate with each other at the ends of these liquefied gas flow paths and are connected in series to form a meandering flow path. However, the inflow part where the liquefied gas flows into the liquefied gas flow path and the outflow part where the liquefied gas flows out from the liquefied gas flow path are located at the ends of the liquefied gas flow paths that are not in communication with the adjacent liquefied gas flow paths. The inflow parts, which are respectively provided and through which the liquefied gas flows into the liquefied gas channel, are connected to the liquefied gas channel located on the upper side. Outflow portion liquefied gas flows out of the liquefied gas flow path, which achieves the second object by a structure that is provided in the liquefied gas channel located on the lower side.
【0016】容器に収容された液相の液化ガスを液化ガ
ス蒸発装置に導く液管路に減圧弁が設けられている場合
は、このような構成の液化ガス蒸発装置とする。このよ
うな構成の液化ガス蒸発装置とすれば、横方向に延在す
る複数の液化ガス流路を縦方向に積層して蛇行する流路
を形成した状態となっている。さらに、流入部は、上側
に位置する液化ガス流路に、流出部は、下側に位置する
液化ガス流路に設けられている。In the case where a pressure reducing valve is provided in the liquid pipe for guiding the liquefied gas in the liquid phase contained in the container to the liquefied gas evaporator, the liquefied gas evaporator has such a structure. According to the liquefied gas evaporation device having such a configuration, a plurality of liquefied gas flow channels extending in the horizontal direction are vertically stacked to form a meandering flow channel. Furthermore, the inflow part is provided in the liquefied gas flow path located on the upper side, and the outflow part is provided in the liquefied gas flow path located in the lower side.
【0017】このため、液化ガス流路内の膜沸騰状態に
ある液化ガスは、液化ガス流路の下側の内面上を一方の
端部から他方の端部に向かって滑りながら流れる。さら
に、この過程で液相の液化ガスが蒸発していなくても、
液化ガスが通流する流路は上下方向に蛇行状に配置てい
るため、液相の液化ガスは次の段の液化ガス流路に流入
し、この液化ガス流路の下側の内面上を一方の端部から
他方の端部に向かって滑りながら流れる。したがって、
液化ガスが液化ガス流路の内面つまり伝熱面に接触する
機会が増大するため、熱交換効率が向上し、蒸発量を増
大できる。したがって、気相の液化ガスの消費が停止し
たときに、液化ガス流路内に残留している液相の液化ガ
スの量を低減できるため、液相の液化ガスの蒸発量を低
減し液化ガス流路内の圧力の上昇を低減できる。これに
より、プレート式熱交換器で液化ガス蒸発装置を形成し
ても、気相の液化ガスの消費が停止したときの液化ガス
流路内の圧力の上昇を低減できるため、液化ガス蒸発装
置を小型化でき、かつ気相の液化ガスの消費が停止した
ときの液化ガス流路内の圧力の上昇を低減できる。Therefore, the liquefied gas in the film boiling state in the liquefied gas channel flows while sliding on the lower inner surface of the liquefied gas channel from one end to the other end. Furthermore, even if the liquefied gas in the liquid phase is not evaporated in this process,
Since the flow path through which the liquefied gas flows is arranged in a meandering pattern in the vertical direction, the liquefied gas in the liquid phase flows into the liquefied gas flow path of the next stage, It flows while sliding from one end to the other. Therefore,
Since the chances of the liquefied gas coming into contact with the inner surface of the liquefied gas flow path, that is, the heat transfer surface are increased, the heat exchange efficiency is improved and the evaporation amount can be increased. Therefore, when the consumption of the liquefied gas in the gas phase is stopped, the amount of the liquefied gas in the liquid phase remaining in the liquefied gas flow channel can be reduced, so that the evaporation amount of the liquefied gas in the liquid phase can be reduced. It is possible to reduce the rise in pressure in the flow path. As a result, even if the liquefied gas evaporator is formed by the plate heat exchanger, it is possible to reduce the increase in the pressure in the liquefied gas flow channel when the consumption of the vaporized liquefied gas is stopped. It is possible to reduce the size and reduce an increase in the pressure in the liquefied gas flow channel when the consumption of the vaporized liquefied gas is stopped.
【0018】[0018]
【発明の実施の形態】(第1の実施形態)以下、本発明
を適用してなる液化ガス蒸発装置の第1の実施形態につ
いて図1及び図2を参照して説明する。図1は、本発明
を適用してなる液化ガス蒸発装置の概略構成を及び動作
を模式的に示す断面図である。図2は、本発明を適用し
てなる液化ガス蒸発装置の設置例と動作を示すブロック
図である。なお、図1では、プレート形またはプレート
式熱交換器と称されるもので形成された液化ガス蒸発装
置を模式的に示しているが、本発明の液化ガス蒸発装置
を形成するためのプレート式熱交換器としては、例え
ば、周縁部を水密にシールした状態で複数の伝熱板を重
ね合わせ、この伝熱板間の空間を交互に熱媒が通流する
熱媒流路及び液化ガスが通流する液化ガス流路としたも
の、また、中空のプレートによって形成された液化ガス
流路を複数連結し、その周囲をシェル内に納めたものな
ど様々な構成のプレート式熱交換器を用いることができ
る。BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) A first embodiment of a liquefied gas evaporation apparatus to which the present invention is applied will be described below with reference to FIGS. 1 and 2. FIG. 1 is a sectional view schematically showing the schematic configuration and operation of a liquefied gas evaporation device to which the present invention is applied. FIG. 2 is a block diagram showing an installation example and operation of a liquefied gas evaporation device to which the present invention is applied. In addition, in FIG. 1, a liquefied gas evaporation device formed by what is called a plate type or a plate type heat exchanger is schematically shown, but a plate type for forming the liquefied gas evaporation device of the present invention is shown. As the heat exchanger, for example, a plurality of heat transfer plates are overlapped in a state where a peripheral portion is watertightly sealed, and a heat medium flow path and a liquefied gas in which a heat medium alternately flows through a space between the heat transfer plates. Uses a plate heat exchanger with various configurations such as a liquefied gas flow path that flows through, or a structure in which multiple liquefied gas flow paths formed by hollow plates are connected and the surroundings are housed in a shell be able to.
【0019】本実施形態の液化ガス蒸発装置1は、図1
に示すように、液化ガス、例えば液化石油ガス(LP
G)や液化天然ガス(LNG)などが通流する液化ガス
流路3、そして熱媒が通流する熱媒流路5などで形成さ
れている。液化ガス流路3は、例えば間隔をおいて2枚
の伝熱板を、周縁部をシールした状態で重ね合わせるこ
とで形成された2枚の伝熱板間の空間によって形成され
ている。そして、液化ガス流路3は、伝熱板を縦方向に
配置した状態、つまり縦方向に延在する状態で、横方向
に間隔をおいて複数配列されている。隣り合う液化ガス
流路3は、液化ガス流路3の上側端部と下側端部の両方
で各々連結流路7a、7bを介して互いに連通してい
る。The liquefied gas evaporation apparatus 1 of this embodiment is shown in FIG.
Liquefied gas, such as liquefied petroleum gas (LP
G), liquefied natural gas (LNG), and the like, and a liquefied gas channel 3 and a heat medium channel 5 through which a heat medium flows. The liquefied gas flow path 3 is formed by, for example, a space between two heat transfer plates, which is formed by stacking two heat transfer plates with a space therebetween at a peripheral edge portion in a sealed state. A plurality of liquefied gas flow paths 3 are arranged at intervals in the horizontal direction with the heat transfer plates arranged in the vertical direction, that is, in a state of extending in the vertical direction. The adjacent liquefied gas flow paths 3 communicate with each other at both the upper end and the lower end of the liquefied gas flow paths 3 via connecting flow paths 7a and 7b, respectively.
【0020】また、両端に位置する液化ガス流路3のう
ち、一方の液化ガス流路3には、液化ガス流路3へ液化
ガスが流入する流入部9が設けられ、他方の液化ガス流
路3には、液化ガス流路3から液化ガスが流出する流出
部11が設けられている。流入部9は、流入部9が設け
られた液化ガス流路3の下側端部に設けられており、流
入部9には、液相の液化ガスを液化ガス蒸発装置1の液
化ガス流路3に導くための液管路13が連結されてい
る。流出部11は、流出部11が設けられた液化ガス流
路3の上側端部に設けられており、流出部11には、液
化ガス流路3内で生成された気相の液化ガスが通流する
ガス管路15が連結されている。熱媒流路5は、複数の
液化ガス流路3間の空間、つまり隣り合う液化ガス流路
3を形成している対向する伝熱板の外面間の空間によっ
て形成されている。熱媒流路5の上側端部には、加熱さ
れた熱媒を熱媒流路5に供給する熱媒供給管路17が、
熱媒流路5の下側端部には、熱媒流路5から熱媒を排出
するための熱媒排出管路19が連結されている。Further, of the liquefied gas flow paths 3 located at both ends, one liquefied gas flow path 3 is provided with an inflow portion 9 through which the liquefied gas flows, and the other liquefied gas flow path 3 is provided. The passage 3 is provided with an outflow portion 11 through which the liquefied gas flows out from the liquefied gas passage 3. The inflow part 9 is provided at the lower end of the liquefied gas flow path 3 in which the inflow part 9 is provided, and the inflow part 9 supplies the liquefied gas in the liquid phase to the liquefied gas flow path of the liquefied gas evaporator 1. A liquid pipe line 13 for leading to 3 is connected. The outflow part 11 is provided at the upper end of the liquefied gas flow path 3 in which the outflow part 11 is provided, and the outflow part 11 is passed through by the gas phase liquefied gas generated in the liquefied gas flow path 3. The flowing gas line 15 is connected. The heat medium passage 5 is formed by a space between the plurality of liquefied gas passages 3, that is, a space between the outer surfaces of the heat transfer plates facing each other forming the adjacent liquefied gas passages 3. At the upper end of the heat medium flow path 5, a heat medium supply pipeline 17 for supplying the heated heat medium to the heat medium flow path 5,
A heat medium discharge conduit 19 for discharging the heat medium from the heat medium flow path 5 is connected to the lower end of the heat medium flow path 5.
【0021】このように液化ガス蒸発装置1は、プレー
ト式熱交換器によって形成されており、熱媒流路5を流
れる加熱された熱媒の熱が、伝熱板を介して液化ガス流
路3内の液相の液化ガスに伝わることにより液相の液化
ガスを加熱して蒸発させ、気相の液化ガスを生成するも
のである。なお、本実施形態では、液化ガス蒸発装置1
に連結された液管路13には、減圧弁は設けられていな
い。As described above, the liquefied gas evaporation device 1 is formed by the plate heat exchanger, and the heat of the heated heat medium flowing through the heat medium flow path 5 passes through the heat transfer plate to the liquefied gas flow path. The liquefied gas in the liquid phase in 3 is heated and evaporated by being transmitted to the liquefied gas in the liquid phase to generate the liquefied gas in the gas phase. In the present embodiment, the liquefied gas evaporation device 1
A pressure reducing valve is not provided in the liquid pipe line 13 connected to.
【0022】液化ガス蒸発装置1の液化ガス流路3に設
けられた流入部9に連結された液管路13は、液相の液
化ガス20が収容された容器21の底部に端部の開口が
位置する状態に容器21内に挿通された状態になってい
る。液化ガス蒸発装置1の液化ガス流路3に設けられた
流出部11に連結されたガス管路15の他端は、気相の
液化ガスを燃料などとして利用する装置や機器類または
設備などの液化ガス消費部23に連結されている。ガス
管路15には、液化ガス消費部23が要求する圧力に気
相の液化ガスの圧力を調整するための圧力調整器24が
設けられている。The liquid conduit 13 connected to the inflow portion 9 provided in the liquefied gas flow path 3 of the liquefied gas evaporator 1 has an end opening at the bottom of the container 21 in which the liquefied gas 20 in the liquid phase is contained. Is in a state of being inserted into the container 21. The other end of the gas pipeline 15 connected to the outflow portion 11 provided in the liquefied gas flow path 3 of the liquefied gas vaporizer 1 is connected to a device, equipment, equipment, or the like that uses liquefied gas in the gas phase as fuel. It is connected to the liquefied gas consumption unit 23. The gas pipe 15 is provided with a pressure regulator 24 for adjusting the pressure of the vaporized liquefied gas to the pressure required by the liquefied gas consuming unit 23.
【0023】熱媒供給管路17と熱媒排出管路19は、
共に熱源機25に連結されている。本実施形態では、熱
源機25として、ポンプ27やバーナー29などを内蔵
した給湯器などを用いており、このため熱媒としては、
水が用いられている。そして、熱媒排出管路19は、熱
源機25内のバーナー29に連結されており、熱媒供給
管路17は、バーナー29よりも熱媒の流れに対して下
流側に設けられたポンプ27に連結されている。熱源機
25内のポンプ27により、熱源機25内のバーナー2
9で加熱された熱媒が、熱媒供給管路17を介して液化
ガス蒸発装置1の熱媒流路5に供給され、液化ガス蒸発
装置1内で液化ガス流路3内の液化ガスと熱交換を行っ
た熱媒流路5内の熱媒は、熱媒排出管路19に排出さ
れ、熱媒排出管路19を介して熱源機25に戻る。The heat medium supply line 17 and the heat medium discharge line 19 are
Both are connected to the heat source device 25. In the present embodiment, a water heater having a pump 27, a burner 29, etc. built therein is used as the heat source device 25. Therefore, as the heat medium,
Water is used. The heat medium discharge pipe line 19 is connected to a burner 29 in the heat source device 25, and the heat medium supply pipe line 17 is a pump 27 provided downstream of the burner 29 with respect to the flow of the heat medium. Are linked to. By the pump 27 in the heat source device 25, the burner 2 in the heat source device 25
The heat medium heated in 9 is supplied to the heat medium flow path 5 of the liquefied gas evaporation device 1 via the heat medium supply pipe 17, and the liquefied gas in the liquefied gas flow path 3 in the liquefied gas evaporation device 1 The heat medium in the heat medium flow path 5 that has undergone heat exchange is discharged to the heat medium discharge pipeline 19, and returns to the heat source device 25 via the heat medium discharge pipeline 19.
【0024】なお、本実施形態では、熱媒を加熱する熱
媒加熱手段、そして熱媒を送液するための熱媒送液手段
として熱源機25を用いているが、熱媒加熱手段そして
熱媒送液手段として熱源機25を用いる必要はない。例
えば、熱媒加熱手段と熱媒送液手段とを別個に設けるこ
ともでき、さらに、熱媒加熱手段そして熱媒送液手段と
して様々な構成のものを用いることができる。また、熱
媒は水に限らず、熱媒となる様々な流体を用いることが
できる。In the present embodiment, the heat source device 25 is used as the heating medium heating means for heating the heating medium and the heating medium feeding means for feeding the heating medium. It is not necessary to use the heat source device 25 as the medium feeding means. For example, the heat medium heating means and the heat medium liquid feeding means can be provided separately, and further various configurations can be used as the heat medium heating means and the heat medium liquid feeding means. Further, the heat medium is not limited to water, and various fluids serving as the heat medium can be used.
【0025】このような構成の液化ガス蒸発装置の動作
と本発明の特徴部について説明する。熱源機25は、図
2に示すように、熱媒となる水を加熱し、例えば70℃
程度の温水として、液化ガス蒸発装置1の熱媒流路5に
供給する。この状態で液化ガス消費部23で液化ガスの
消費が開始されると、液管路13及び液化ガス蒸発装置
1の液化ガス流路3に設けられた流入部9を介して、容
器21内の液相の液化ガスが液化ガス蒸発装置1の液化
ガス流路3内に流入し、熱媒流路5を通流する加熱され
た熱媒の熱により加熱され蒸発する。このとき、液化ガ
ス蒸発装置1の液化ガス流路3への液相の液化ガスの流
入量は、気相の液化ガスの消費量と液化ガス流路3での
液相の液化ガスの蒸発量とに応じて決まる。つまり、液
相の液化ガスは、気相の液化ガスの消費量と液化ガス流
路3での液相の液化ガスの蒸発量とがバランスするまで
流入する。The operation of the liquefied gas evaporator having such a structure and the features of the present invention will be described. As shown in FIG. 2, the heat source device 25 heats water serving as a heat medium to, for example, 70 ° C.
It is supplied to the heat medium flow path 5 of the liquefied gas evaporation device 1 as warm water of a certain degree. When the consumption of the liquefied gas in the liquefied gas consuming portion 23 is started in this state, the inside of the container 21 inside the container 21 is passed through the liquid pipeline 13 and the inflow portion 9 provided in the liquefied gas flow path 3 of the liquefied gas evaporator 1. The liquefied gas in the liquid phase flows into the liquefied gas channel 3 of the liquefied gas evaporator 1, and is heated and evaporated by the heat of the heated heating medium flowing through the heating medium channel 5. At this time, the inflow amount of the liquefied gas in the liquid phase into the liquefied gas flow path 3 of the liquefied gas evaporator 1 depends on the consumption amount of the liquefied gas in the gas phase and the evaporation amount of the liquefied gas in the liquefied gas in the liquefied gas flow path 3. It depends on and. That is, the liquefied gas in the liquid phase flows in until the consumption amount of the liquefied gas in the gas phase and the evaporation amount of the liquefied gas in the liquid phase in the liquefied gas channel 3 are balanced.
【0026】したがって、図1に示すように、各液化ガ
ス流路3に流入した液相の液化ガス20の液面は、液相
の液化ガスの流入量、つまり気相の液化ガスの消費量に
よって決まる。気相の液化ガスの消費量が少なくなる
と、液相の液化ガスの流入量が少なくなるため、各液化
ガス流路3内にある液相の液化ガス20の液面は低下す
る。一方、気相の液化ガスの消費量が多くなると、液相
の液化ガスの流入量が多くなるため、各液化ガス流路3
内にある液相の液化ガス20の液面は上昇する。Therefore, as shown in FIG. 1, the liquid level of the liquefied gas 20 in the liquid phase flowing into each liquefied gas flow path 3 is the inflow amount of the liquefied gas in the liquid phase, that is, the consumption amount of the liquefied gas in the gas phase. Depends on When the consumption amount of the liquefied gas in the gas phase decreases, the inflow amount of the liquefied gas in the liquid phase decreases, so that the liquid level of the liquefied gas 20 in the liquefied gas in each liquefied gas channel 3 decreases. On the other hand, when the consumption amount of the liquefied gas in the gas phase increases, the inflow amount of the liquefied gas in the liquid phase increases, so that each liquefied gas flow path 3
The liquid level of the liquefied gas 20 in the liquid phase inside rises.
【0027】ここで、気相の液化ガスの消費が停止する
と、各液化ガス流路3内にある液相の液化ガス20が熱
媒の熱で加熱されて蒸発することにより、各液化ガス流
路3内の圧力が上昇しようとするとする。これにより、
流入部9が設けられた液化ガス流路3以外の液化ガス流
路3内にある液相の液化ガス20は、各液化ガス流路3
の下側端部に設けられた連結流路7bを介して、流入部
9が設けられた液化ガス流路3方向に戻される。つま
り、流入部9が設けられた液化ガス流路3以外の液化ガ
ス流路3内にある液相の液化ガス20は、図1における
破線で示した矢印方向に流れる。また、流入部9が設け
られた液化ガス流路3にある液相の液化ガス20は、液
管路13方向つまり容器21方向に戻され、やはり図1
における破線で示した矢印方向に流れる。Here, when the consumption of the vaporized liquid gas is stopped, the liquid gas 20 in the liquid gas channels 3 is heated by the heat of the heat medium and evaporated, so that the flow of each liquid gas is increased. Suppose the pressure in the path 3 tries to rise. This allows
The liquefied gas 20 in the liquid phase in the liquefied gas channel 3 other than the liquefied gas channel 3 provided with the inflow portion 9 is
It is returned to the direction of the liquefied gas flow path 3 in which the inflow part 9 is provided via the connection flow path 7b provided in the lower end part. That is, the liquefied gas 20 in the liquid phase in the liquefied gas channel 3 other than the liquefied gas channel 3 in which the inflow portion 9 is provided flows in the direction of the arrow shown by the broken line in FIG. Further, the liquid phase liquefied gas 20 in the liquefied gas flow path 3 provided with the inflow portion 9 is returned to the liquid pipe line 13 direction, that is, the container 21 direction, and as shown in FIG.
Flows in the direction of the arrow indicated by the broken line in FIG.
【0028】流入部9が設けられた液化ガス流路3以外
の液化ガス流路3内にある液相の液化ガス20が、流入
部9が設けられた液化ガス流路3方向に戻され、流入部
9が設けられた液化ガス流路3にある液相の液化ガス2
0が、液管路13の液化ガス流路3との連結部近傍部分
つまり流入部9近傍部分まで戻り、各液化ガス流路3内
に液相の液化ガス20が無くなると、液相の液化ガス2
0の蒸発が無くなる。液相の液化ガス20の蒸発が無く
なると、液化ガス流路3内の圧力が上昇しようとしない
ため、液管路13内の液相の液化ガス20を容器21方
向に戻す力が生じず、液管路13内の液相の液化ガス2
0は、液管路13の液化ガス流路3との連結部近傍部分
に留まっている。The liquid phase liquefied gas 20 in the liquefied gas channel 3 other than the liquefied gas channel 3 provided with the inflow portion 9 is returned to the liquefied gas channel 3 provided with the inflow portion 9, Liquid phase liquefied gas 2 in liquefied gas channel 3 provided with inflow part 9
0 returns to a portion near the connecting portion of the liquid pipeline 13 with the liquefied gas flow passage 3, that is, a portion near the inflow portion 9, and when the liquefied gas 20 in the liquid phase disappears in each liquefied gas flow passage 3, the liquid phase is liquefied. Gas 2
Evaporation of 0 disappears. When the evaporation of the liquefied gas 20 in the liquid phase is stopped, the pressure in the liquefied gas flow path 3 does not rise, so that the force for returning the liquefied gas 20 in the liquid phase in the liquid conduit 13 to the container 21 direction does not occur, Liquid phase liquefied gas 2 in the liquid conduit 13
0 remains in the vicinity of the connecting portion of the liquid pipe 13 with the liquefied gas flow path 3.
【0029】このように本実施形態の液化ガス蒸発装置
1では、液化ガス流路3を縦置きにし、さらに、複数の
液化ガス流路3を上側端部と下側端部の両方で連通させ
て複数の液化ガス流路3を並列に連結したような状態と
なっている。このため、気相の液化ガスの消費が停止し
たとき、流入部9が設けられた液化ガス流路3以外の液
化ガス流路3に液相の液化ガス20が流入していても、
液相の液化ガス20の蒸発によって液化ガス流路3内の
圧力が上昇しようとすると、流入部9が設けられた液化
ガス流路3以外の液化ガス流路3内にある液相の液化ガ
ス20は、下側端部に設けられた連結流路7bを介し
て、流入部9が設けられた液化ガス流路3側に戻され
る。そして、流入部9が設けられた液化ガス流路3内の
液相の液化ガス20が液管路13の液化ガス流路3との
連結部近傍部分まで戻り、液化ガス流路3内に液相の液
化ガス20が無くなると、液相の液化ガスの蒸発が無く
なる。As described above, in the liquefied gas vaporizer 1 of the present embodiment, the liquefied gas flow path 3 is placed vertically, and the plurality of liquefied gas flow paths 3 are connected to each other at both the upper end and the lower end. And a plurality of liquefied gas flow paths 3 are connected in parallel. Therefore, when the consumption of the gas phase liquefied gas is stopped, even if the liquid phase liquefied gas 20 is flowing into the liquefied gas channel 3 other than the liquefied gas channel 3 provided with the inflow portion 9,
When the pressure in the liquefied gas passage 3 is attempted to rise due to the evaporation of the liquefied gas 20 in the liquid phase, the liquefied gas in the liquefied gas in the liquefied gas passages 3 other than the liquefied gas passage 3 in which the inflow portion 9 is provided. 20 is returned to the liquefied gas flow path 3 side in which the inflow part 9 is provided via the connection flow path 7b provided in the lower end part. Then, the liquefied gas 20 in the liquid phase in the liquefied gas flow path 3 provided with the inflow portion 9 returns to the vicinity of the connecting portion of the liquid pipeline 13 with the liquefied gas flow path 3, and the liquefied gas flow path 3 is liquefied. When the liquefied gas 20 in the phase disappears, the liquefied gas in the liquid phase does not evaporate.
【0030】したがって、液管路13内の液相の液化ガ
ス20は、液管路13の液化ガス流路3との連結部近傍
部分に留まっており、液相の液化ガス20が液管路13
の液化ガス流路3との連結部近傍から容器21方向にさ
らに戻されたり、液管路13内が気相状態になることが
なく、気相の液化ガスの消費が再開されたときの気相の
液化ガスの圧力降下を抑制できる。すなわち、本実施形
態の液化ガス蒸発装置1は、プレート式熱交換器で形成
されているが、気相の液化ガスの供給安定性が低下し難
く、液化ガス蒸発装置を小型化でき、かつ気相の液化ガ
スの供給安定性の低下を抑えることができる。Therefore, the liquid phase liquefied gas 20 in the liquid conduit 13 remains in the vicinity of the connection portion of the liquid conduit 13 with the liquefied gas flow path 3, and the liquid phase liquefied gas 20 is Thirteen
When the consumption of the vaporized liquefied gas is resumed without further returning from the vicinity of the connection portion with the liquefied gas flow path 3 in the direction of the container 21 or the inside of the liquid pipeline 13 being in the vapor phase state. The pressure drop of the liquefied gas in the phase can be suppressed. That is, the liquefied gas evaporator 1 of the present embodiment is formed of a plate heat exchanger, but the supply stability of the gas phase liquefied gas is less likely to decrease, and the liquefied gas evaporator can be downsized and It is possible to suppress a decrease in the supply stability of the liquefied gas in the phase.
【0031】さらに、液化ガス流路の設置方向や複数の
液化ガス流路の連通位置などによっては、液化ガス流路
3内に溜まったドレーンを排出し難く、ドレーンを排出
できないと、液化ガス流路内に溜まったドレーンによっ
て気相の液化ガスの通流が妨げられ、場合によっては、
気相の液化ガスの供給が停止する場合もある。しかし、
本実施形態の液化ガス蒸発装置1では、各液化ガス流路
3の下側端部が連結流路7bによって連通しているた
め、各液化ガス流路3内に溜まったドレーンを容易に排
出することができる。Further, depending on the installation direction of the liquefied gas flow path or the communication position of the plurality of liquefied gas flow paths, it is difficult to drain the drain accumulated in the liquefied gas flow path 3, and if the drain cannot be discharged, the liquefied gas flow The drain accumulated in the passage hinders the flow of the gas phase liquefied gas, and in some cases,
The supply of the vapor phase liquefied gas may be stopped. But,
In the liquefied gas vaporization device 1 of the present embodiment, since the lower end of each liquefied gas flow path 3 is communicated with the connection flow path 7b, the drain accumulated in each liquefied gas flow path 3 is easily discharged. be able to.
【0032】加えて、一般にプレート式熱交換器では、
流路の通過面積を大きくし難く、圧力損失を低減し難
い。しかし、本実施形態の液化ガス蒸発装置1では、各
液化ガス流路3が並列連結されたような状態になってい
るため、通過面積を増大でき、これにより圧力損失を低
減できる。In addition, generally in the plate type heat exchanger,
It is difficult to increase the passage area of the flow path and reduce pressure loss. However, in the liquefied gas vaporization device 1 of the present embodiment, since the liquefied gas flow paths 3 are connected in parallel, the passage area can be increased, and thus the pressure loss can be reduced.
【0033】(第2の実施形態)以下、本発明を適用し
てなる液化ガス蒸発装置の第2の実施形態について図3
及び図4を参照して説明する。図3は、本発明を適用し
てなる液化ガス蒸発装置の概略構成を及び動作を模式的
に示す断面図である。図4は、本発明を適用してなる液
化ガス蒸発装置の設置例と動作を示すブロック図であ
る。なお、本実施形態では、第1の実施形態と同一のも
の及び動作などには同じ符号を付して説明を省略し、第
1の実施形態と相違する構成及び特徴部などについて説
明する。また、図3では、プレート形またはプレート式
熱交換器と称されるもので形成された液化ガス蒸発装置
を模式的に示しているが、本発明の液化ガス蒸発装置を
形成するためのプレート式熱交換器として様々な構成の
プレート式熱交換器を用いることができる点は第1の実
施形態と同様である。(Second Embodiment) A second embodiment of the liquefied gas evaporation apparatus to which the present invention is applied will be described below with reference to FIG.
And FIG. 4 will be described. FIG. 3 is a cross-sectional view schematically showing the schematic configuration and operation of a liquefied gas evaporation device to which the present invention is applied. FIG. 4 is a block diagram showing an installation example and operation of a liquefied gas evaporation device to which the present invention is applied. In the present embodiment, the same components and operations as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. The configuration and the characteristic portion different from those in the first embodiment will be described. Further, although FIG. 3 schematically shows a liquefied gas evaporation device formed by what is called a plate type or plate type heat exchanger, a plate type for forming the liquefied gas evaporation device of the present invention is shown. As in the first embodiment, plate heat exchangers having various configurations can be used as the heat exchanger.
【0034】本実施形態の液化ガス蒸発装置が第1の実
施形態と相違する点は、減圧弁が設けられた液管路に連
結されていること、そして、液化ガス流路を横置きに
し、複数の液化ガス流路を直列に連結したことにある。
すなわち、本実施形態の液化ガス蒸発装置31は、図3
に示すように、液化ガス流路3は、伝熱板を横方向に配
置した状態、つまり横方向に延在する状態で、縦方向つ
まり上下方向に間隔をおいて複数配列されている。複数
の液化ガス流路3のうち、上端に位置する液化ガス流路
3には、一方の端部の上面に流入部9が、他方の端部に
は流入部9とは反対方向に連結流路7が設けられてい
る。一方、下端に位置する液化ガス流路3には、一方の
端部の下面に流出部11が、他方の端部に流出部11と
は反対方向に連結流路7が設けられている。The liquefied gas evaporation device of this embodiment is different from that of the first embodiment in that it is connected to a liquid pipe line provided with a pressure reducing valve, and the liquefied gas flow path is set horizontally. This is because a plurality of liquefied gas flow paths were connected in series.
That is, the liquefied gas evaporation device 31 of the present embodiment is shown in FIG.
As shown in FIG. 5, the liquefied gas flow paths 3 are arranged in the vertical direction, that is, in the vertical direction at intervals with the heat transfer plates arranged in the horizontal direction, that is, in the state of extending in the horizontal direction. In the liquefied gas flow passage 3 located at the upper end of the plurality of liquefied gas flow passages 3, an inflow portion 9 is formed on the upper surface of one end portion and a connecting flow is formed in the other end portion in a direction opposite to the inflow portion 9. A path 7 is provided. On the other hand, in the liquefied gas channel 3 located at the lower end, the outflow portion 11 is provided on the lower surface of one end portion, and the connection passage 7 is provided at the other end portion in the direction opposite to the outflow portion 11.
【0035】複数の液化ガス流路3のうち、中間に位置
する液化ガス流路3の両側の端部には、各々、互いに反
対方向に設けられた連結流路7を介して上下に隣り合う
液化ガス流路3の対応する端部と連結されている。つま
り、連結流路7は、複数の液化ガス流路3の両側の端部
に交互に設けられており、複数の液化ガス流路3は、直
列に連結されて、蛇行状の流路を形成している。なお、
流入部9に連結された液管路13には、減圧弁33が設
けられている。また、熱媒流路5の一方の側端部には、
下側部分に加熱された熱媒を熱媒流路5に供給する熱媒
供給管路17が、熱媒流路5の他方の側端部には、上側
部分に熱媒流路5から熱媒を排出するための熱媒排出管
路19が連結されている。Of the plurality of liquefied gas flow paths 3, the end portions on both sides of the liquefied gas flow path 3 located in the middle are vertically adjacent to each other via connection flow paths 7 provided in mutually opposite directions. It is connected to the corresponding end of the liquefied gas channel 3. That is, the connection flow paths 7 are alternately provided at both ends of the plurality of liquefied gas flow paths 3, and the plurality of liquefied gas flow paths 3 are connected in series to form a meandering flow path. is doing. In addition,
A pressure reducing valve 33 is provided in the liquid conduit 13 connected to the inflow portion 9. In addition, at one side end of the heat medium channel 5,
The heat medium supply pipe 17 for supplying the heat medium heated to the lower side portion to the heat medium flow passage 5 is provided at the other side end portion of the heat medium flow passage 5 from the heat medium flow passage 5 to the upper side portion. A heat medium discharge conduit 19 for discharging the medium is connected.
【0036】このように本実施形態の液化ガス蒸発装置
31も、第1の実施形態と同様に、プレート式熱交換器
によって形成されており、熱媒流路5を流れる加熱され
た熱媒の熱が、伝熱板を介して液化ガス流路3内の液相
の液化ガスに伝わることにより液相の液化ガスを加熱し
て蒸発させ、気相の液化ガスを生成するものである。As described above, the liquefied gas evaporator 31 of the present embodiment is also formed by the plate heat exchanger as in the first embodiment, and the heated heat medium flowing through the heat medium passage 5 is The heat is transferred to the liquefied gas in the liquefied gas in the liquefied gas flow path 3 through the heat transfer plate to heat and evaporate the liquefied gas in the liquid phase to generate the liquefied gas in the gas phase.
【0037】なお、本実施形態の液管路13に設けられ
た減圧弁33は、図4に示すように、ガス管路15内の
圧力を減圧弁33に伝える圧力検知管35を備えてい
る。そして、減圧弁33は、圧力検知管35を介して検
出したガス管路15内の圧力が、予め設定された圧力に
なるように、容器21から導かれてきた液相の液化ガス
20の流量を調整することで減圧して、気液混合状態の
液化ガスを液化ガス蒸発装置31に送り込む。例えば、
法的な規制によって、定められた圧力以上の液相の液化
ガスを直接液化ガス蒸発装置に導くと、高圧ガスの製造
となるため、このような場合、減圧弁が用いられる。減
圧弁によって定められた圧力以下に減圧した液化ガスを
液化ガス蒸発装置に導けば消費型蒸発器となり、高圧ガ
スの製造許可などが不要となる。As shown in FIG. 4, the pressure reducing valve 33 provided in the liquid conduit 13 of the present embodiment is provided with a pressure detecting pipe 35 for transmitting the pressure in the gas conduit 15 to the pressure reducing valve 33. . Then, the pressure reducing valve 33 causes the flow rate of the liquid phase liquefied gas 20 introduced from the container 21 such that the pressure in the gas pipeline 15 detected through the pressure detection pipe 35 becomes a preset pressure. Is adjusted to reduce the pressure, and the liquefied gas in a gas-liquid mixed state is sent to the liquefied gas evaporator 31. For example,
If a liquefied gas in a liquid phase having a pressure equal to or higher than a predetermined pressure is directly introduced into the liquefied gas evaporator by legal regulation, high pressure gas is produced. Therefore, in such a case, a pressure reducing valve is used. If the liquefied gas depressurized below the pressure determined by the pressure reducing valve is introduced into the liquefied gas evaporation device, it becomes a consumable evaporator, and the production permission of the high pressure gas becomes unnecessary.
【0038】このような構成の液化ガス蒸発装置の動作
と本発明の特徴部について説明する。熱源機25は、図
4に示すように、熱媒となる水を加熱し、例えば70℃
程度の温水として、液化ガス蒸発装置1の熱媒流路5に
供給する。この状態で液化ガス消費部23で液化ガスの
消費が開始されると、液管路13及び液化ガス蒸発装置
1の液化ガス流路3に設けられた流入部9を介して、容
器21内の液相の液化ガスが液化ガス蒸発装置1の液化
ガス流路3内に流入し、熱媒流路5を通流する加熱され
た熱媒の熱により加熱され蒸発する。このとき、液管路
13内を通流する液相の液化ガス20は、減圧弁33に
よって例えば0.2MPa程度に減圧された後、流入部
9から液化ガス流路3に流入する。減圧弁33によって
減圧された液相の液化ガス20は、断熱膨張して温度が
低下し、例えば−15℃程度の温度の気液混合状態の液
化ガスとなっている。The operation of the liquefied gas evaporator having such a configuration and the features of the present invention will be described. As shown in FIG. 4, the heat source device 25 heats water serving as a heat medium to, for example, 70 ° C.
It is supplied to the heat medium flow path 5 of the liquefied gas evaporation device 1 as warm water of a certain degree. When the consumption of the liquefied gas in the liquefied gas consuming portion 23 is started in this state, the inside of the container 21 inside the container 21 is passed through the liquid pipeline 13 and the inflow portion 9 provided in the liquefied gas flow path 3 of the liquefied gas evaporator 1. The liquefied gas in the liquid phase flows into the liquefied gas channel 3 of the liquefied gas evaporator 1, and is heated and evaporated by the heat of the heated heating medium flowing through the heating medium channel 5. At this time, the liquid-phase liquefied gas 20 flowing through the liquid conduit 13 is depressurized by the decompression valve 33 to, for example, about 0.2 MPa, and then flows into the liquefied gas flow path 3 from the inflow portion 9. The liquid phase liquefied gas 20 decompressed by the decompression valve 33 is adiabatically expanded and its temperature is lowered, and becomes a liquefied gas in a gas-liquid mixed state at a temperature of, for example, about −15 ° C.
【0039】このように、液化ガス蒸発装置31で液相
の液化ガスの蒸発を開始した状態、つまり液化ガス蒸発
装置31の運転の初期状態では、液化ガスと、液化ガス
蒸発装置31の液化ガス流路3の液化ガスとの接触面の
表面温度との温度差が、膜沸騰となるような温度差、例
えば温度差ΔT=85℃となる。本実施形態では、図3
に示すように、液化ガス流路3が横方向に延在している
ため、膜沸騰状態となっている気液混合状態の液化ガス
が、液化ガス流路3の下側部分の内面上を流入部9が設
けられた側の端部から連結流路7が設けられた側の端部
に向かって滑って行く。さらに、複数の液化ガス流路3
が上下方向に積層され、蛇行状に直列に連結された状態
になっているため、連結流路7が設けられた側の端部に
滑って行った気液混合状態の液化ガスがまだある場合に
は、この気液混合状態の液化ガスは連結流路7から次の
段の液化ガス流路3に落下し、前述のように、液化ガス
流路3の一方の端部から他方の端部へと液化ガス流路3
の内面と接触した状態で滑って行く。In this way, in the state where the liquefied gas vaporizer 31 has started to vaporize the liquefied gas in the liquid phase, that is, in the initial state of operation of the liquefied gas vaporizer 31, the liquefied gas and the liquefied gas vaporizer 31 The temperature difference from the surface temperature of the contact surface of the flow path 3 with the liquefied gas is a temperature difference that causes film boiling, for example, the temperature difference ΔT = 85 ° C. In the present embodiment, FIG.
As shown in FIG. 3, since the liquefied gas flow path 3 extends in the lateral direction, the liquefied gas in a gas-liquid mixed state, which is in the film boiling state, flows on the inner surface of the lower part of the liquefied gas flow path 3. It slides from the end on the side where the inflow portion 9 is provided toward the end on the side where the connecting flow path 7 is provided. Furthermore, a plurality of liquefied gas flow paths 3
When the liquefied gas is still in a gas-liquid mixed state, which has been slid to the end portion on the side where the connection flow path 7 is provided, since there is still a state in which they are vertically stacked and connected in a meandering series. In this case, the liquefied gas in the gas-liquid mixed state falls from the connecting flow path 7 to the liquefied gas flow path 3 of the next stage, and as described above, from one end to the other end of the liquefied gas flow path 3. Liquid gas flow path 3
Slide in contact with the inner surface of.
【0040】したがって、膜沸騰状態となっている気液
混合状態の液化ガスと液化ガス流路3の内面との接触の
機会を増大でき、熱交換効率を向上できるため、液化ガ
ス蒸発装置31の運転の初期で膜沸騰状態のときに気相
の液化ガスの消費が停止したときの、各液化ガス流路3
内に残留する液相の液化ガスの量を低減できる。これに
より、気相の液化ガスの消費が停止した後の、液相の液
化ガスの蒸発量が低減されるため、液化ガス流路3内の
圧力の上昇が低減される。また、液化ガス蒸発装置31
の運転の初期で膜沸騰状態のときに気相の液化ガスの消
費が停止せず、液化ガス流路への液化ガスの流入と蒸発
が続き、液化ガス流路の内面の温度が低下してくると、
液化ガスの沸騰状態は、膜沸騰よりも熱交換効率が高い
核沸騰となる。Therefore, it is possible to increase the chances of contact between the liquefied gas in the gas-liquid mixed state in the film boiling state and the inner surface of the liquefied gas flow path 3 and improve the heat exchange efficiency. Each liquefied gas flow path 3 when the consumption of the liquefied gas in the gas phase is stopped in the film boiling state at the beginning of operation
The amount of liquefied gas in the liquid phase remaining inside can be reduced. As a result, the evaporation amount of the liquefied gas in the liquid phase after the consumption of the liquefied gas in the gas phase is stopped is reduced, so that the rise in the pressure in the liquefied gas flow path 3 is reduced. In addition, the liquefied gas evaporator 31
In the initial stage of the operation, the consumption of the liquefied gas in the gas phase did not stop when the film was in a boiling state, the liquefied gas continued to flow into the liquefied gas channel and vaporized, and the temperature of the inner surface of the liquefied gas channel decreased. When you come
The boiling state of the liquefied gas is nucleate boiling having higher heat exchange efficiency than film boiling.
【0041】このように本実施形態の液化ガス蒸発装置
31では、液化ガス流路3を横置きにし、さらに、複数
の液化ガス流路3を蛇行状に直列に連結した状態となっ
ている。このため、液化ガス蒸発装置31の運転の初期
で膜沸騰状態の液化ガスは、液化ガス流路3内を滑りな
がら移動し、1段の液化ガス流路3で蒸発できなかった
膜沸騰状態の液化ガスは、次の段の液化ガス流路3に流
入する。したがって、膜沸騰状態の液化ガスと、液化ガ
ス流路3の内面つまり伝熱面との接触の機会が増大する
ため、熱交換効率を向上できる。熱交換効率が向上する
ことにより、膜沸騰状態のときに気相の液化ガスの消費
が停止したときの、各液化ガス流路3内にある液相の液
化ガスの量を低減でき、このときの液化ガスの蒸発量が
低減されるため、液化ガス流路3内の圧力の上昇が低減
される。したがって、本実施形態の液化ガス蒸発装置3
1は、プレート式熱交換器で形成されているが、気相の
液化ガスの消費が停止したときの液化ガス流路内の圧力
の上昇を低減することができる。すなわち、液化ガス蒸
発装置を小型化でき、かつ気相の液化ガスの消費が停止
したときの液化ガス流路内の圧力の上昇を低減できる。As described above, in the liquefied gas vaporizer 31 of the present embodiment, the liquefied gas flow path 3 is placed horizontally and a plurality of liquefied gas flow paths 3 are connected in a meandering manner in series. Therefore, the liquefied gas in the film boiling state in the initial stage of the operation of the liquefied gas vaporizer 31 moves while sliding in the liquefied gas flow path 3 and is in the film boiling state that could not be evaporated in the liquefied gas flow path 3 of one stage. The liquefied gas flows into the liquefied gas channel 3 in the next stage. Therefore, the chances of contact between the liquefied gas in the film boiling state and the inner surface of the liquefied gas flow path 3, that is, the heat transfer surface are increased, so that the heat exchange efficiency can be improved. By improving the heat exchange efficiency, it is possible to reduce the amount of the liquid phase liquefied gas in each liquefied gas channel 3 when the consumption of the gas phase liquefied gas is stopped in the film boiling state. Since the evaporation amount of the liquefied gas is reduced, the increase in the pressure in the liquefied gas flow path 3 is reduced. Therefore, the liquefied gas evaporation device 3 of the present embodiment
Although No. 1 is formed of a plate heat exchanger, it is possible to reduce an increase in the pressure in the liquefied gas flow channel when the consumption of the gas phase liquefied gas is stopped. That is, the liquefied gas evaporation device can be downsized, and the rise in the pressure in the liquefied gas flow path when the consumption of the vaporized liquefied gas is stopped can be reduced.
【0042】さらに、液化ガスと液化ガス流路の伝熱面
との接触の機会が増大し、熱交換効率が向上するため、
液化ガス蒸発装置をさらに小型化できる。Furthermore, since the chances of contact between the liquefied gas and the heat transfer surface of the liquefied gas channel are increased and the heat exchange efficiency is improved,
The liquefied gas evaporator can be further downsized.
【0043】加えて、液化ガス流路3内に生じたドレー
ンは、最下段の液化ガス流路3に流下するため、液化ガ
ス流路3の流出部11などにドレーン抜き手段などを設
ければ、ドレーンを容易に排出することができる。した
がって、液化ガス流路内に溜まったドレーンによって気
相の液化ガスの通流が妨げられ、場合によっては、気相
の液化ガスの供給が停止することがない。In addition, since the drain generated in the liquefied gas flow path 3 flows down to the liquefied gas flow path 3 in the lowermost stage, a drain removing means or the like may be provided in the outflow portion 11 of the liquefied gas flow path 3. , The drain can be easily discharged. Therefore, the drain accumulated in the liquefied gas flow passage prevents the flow of the liquefied gas in the gas phase, and in some cases, the supply of the liquefied gas in the gas phase does not stop.
【0044】[0044]
【発明の効果】本発明によれば、液化ガス蒸発装置を小
型化でき、かつ気相の液化ガスの供給安定性の低下を抑
えることができる。According to the present invention, the liquefied gas vaporizer can be downsized and the deterioration of the supply stability of the liquefied gas in the vapor phase can be suppressed.
【0045】また、本発明によれば、液化ガス蒸発装置
を小型化でき、かつ気相の液化ガスの消費停止したとき
の液化ガス流路内の圧力の上昇を低減できる。Further, according to the present invention, the liquefied gas evaporation device can be downsized, and the rise in the pressure in the liquefied gas flow channel when the consumption of the vaporized liquefied gas is stopped can be reduced.
【図1】本発明を適用してなる液化ガス蒸発装置の第1
の実施形態の概略構成を及び動作を模式的に示す断面図
である。FIG. 1 is a first liquefied gas evaporator according to the present invention.
3 is a cross-sectional view schematically showing the schematic configuration and operation of the embodiment of FIG.
【図2】本発明を適用してなる第1の実施形態の液化ガ
ス蒸発装置の設置例と動作を示すブロック図である。FIG. 2 is a block diagram showing an installation example and operation of the liquefied gas evaporation device of the first embodiment to which the present invention is applied.
【図3】本発明を適用してなる液化ガス蒸発装置の第2
の実施形態の概略構成を及び動作を模式的に示す断面図
である。FIG. 3 is a second liquefied gas evaporation device to which the present invention is applied.
3 is a cross-sectional view schematically showing the schematic configuration and operation of the embodiment of FIG.
【図4】本発明を適用してなる第2の実施形態の液化ガ
ス蒸発装置の設置例と動作を示すブロック図である。FIG. 4 is a block diagram showing an installation example and operation of a liquefied gas evaporation device according to a second embodiment to which the present invention is applied.
1 液化ガス蒸発装置 3 液化ガス流路 5 熱媒流路 7 連結流路 9 流入部 11 流出部 1 Liquefied gas evaporator 3 Liquefied gas flow path 5 Heat medium flow path 7 connection channels 9 Inflow section 11 Outflow part
───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 3E073 DB04 DC07 DC13 DC31 3L103 AA05 BB30 CC02 CC12 CC18 DD15 DD55 DD62 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 3E073 DB04 DC07 DC13 DC31 3L103 AA05 BB30 CC02 CC12 CC18 DD15 DD55 DD62
Claims (2)
に間隔をおいて複数配列し、該複数の液化ガス流路間の
空間を熱媒流路とし、該熱媒流路を通流する加熱された
熱媒で前記液化ガス流路内を通流する液化ガスを加熱し
てなる液化ガス蒸発装置であり、 隣り合う前記液化ガス流路は、該液化ガス流路の上側端
部と下側端部の両方で互いに連通しており、前記液化ガ
ス流路へ液化ガスが流入する流入部は、前記液化ガス流
路の下側端部に設けられ、前記液化ガス流路から液化ガ
スが流出する流出部は、前記液化ガス流路の上側端部に
設けられていることを特徴とする液化ガス蒸発装置。1. A plurality of liquefied gas passages extending in the longitudinal direction are arranged at intervals in the lateral direction, and a space between the plurality of liquefied gas passages is used as a heat medium passage, and the heat medium passage is It is a liquefied gas vaporization device formed by heating a liquefied gas flowing in the liquefied gas channel with a heated heating medium flowing through, and the adjacent liquefied gas channels are the upper end of the liquefied gas channel. Part and the lower end part are in communication with each other, the inflow part where the liquefied gas flows into the liquefied gas flow path is provided at the lower end part of the liquefied gas flow path, and from the liquefied gas flow path. The liquefied gas evaporation device is characterized in that an outflow portion through which the liquefied gas flows out is provided at an upper end portion of the liquefied gas flow path.
に間隔をおいて複数配列し、該複数の液化ガス流路間の
空間を熱媒流路とし、該熱媒流路を通流する加熱された
熱媒で前記液化ガス流路内を通流する液化ガスを加熱し
てなり、前記液化ガス流路へ液化ガスが流入する流入部
には、減圧弁が設けられた液相の液化ガスが通流する管
路が連結される液化ガス蒸発装置であり、 前記複数の液化ガス流路は、該各液化ガス流路の端部で
互いに連通し、直列に連結されて蛇行状の流路を形成
し、前記液化ガス流路へ液化ガスが流入する流入部及び
前記液化ガス流路から液化ガスが流出する流出部は、前
記液化ガス流路の隣り合う前記液化ガス流路と連通して
いない側の端部に各々設けられ、かつ前記液化ガス流路
へ液化ガスが流入する流入部は、上側に位置する前記液
化ガス流路に、前記液化ガス流路から液化ガスが流出す
る流出部は、下側に位置する前記液化ガス流路に設けら
れていることを特徴とする液化ガス蒸発装置。2. A plurality of liquefied gas passages extending in the lateral direction are arranged at intervals in the vertical direction, and a space between the plurality of liquefied gas passages is used as a heat medium passage, and the heat medium passage is A liquid provided with a pressure reducing valve at the inflow portion where the liquefied gas flowing in the liquefied gas flow channel is heated by the heated heating medium flowing therethrough, and the liquefied gas flows into the liquefied gas flow channel. A liquefied gas evaporation device in which pipes through which liquefied gas of a phase flows is connected, wherein the plurality of liquefied gas flow paths communicate with each other at the end of each liquefied gas flow path and are connected in series to meander. -Shaped flow paths are formed, and an inflow part where the liquefied gas flows into the liquefied gas flow path and an outflow part where the liquefied gas flows out from the liquefied gas flow path are adjacent to the liquefied gas flow paths. The inflow portion, which is respectively provided at the end portion on the side not communicating with, and through which the liquefied gas flows into the liquefied gas channel, A liquefied gas evaporation device, characterized in that the liquefied gas passage located on the side of the liquefied gas passage has an outflow portion through which liquefied gas flows out of the liquefied gas passage. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002011170A JP2003214777A (en) | 2002-01-21 | 2002-01-21 | Liquefied gas evaporator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002011170A JP2003214777A (en) | 2002-01-21 | 2002-01-21 | Liquefied gas evaporator |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2003214777A true JP2003214777A (en) | 2003-07-30 |
Family
ID=27648712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002011170A Abandoned JP2003214777A (en) | 2002-01-21 | 2002-01-21 | Liquefied gas evaporator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2003214777A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012072051A1 (en) * | 2010-12-03 | 2012-06-07 | 新地能源工程技术有限公司 | Water-bath type vaporizer |
JP2017120125A (en) * | 2015-12-28 | 2017-07-06 | 株式会社神戸製鋼所 | Intermediate medium type carburetor |
WO2017115723A1 (en) * | 2015-12-28 | 2017-07-06 | 株式会社神戸製鋼所 | Intermediate medium carburetor |
JP2018132298A (en) * | 2017-01-13 | 2018-08-23 | ダイキン工業株式会社 | Water heat exchanger |
-
2002
- 2002-01-21 JP JP2002011170A patent/JP2003214777A/en not_active Abandoned
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012072051A1 (en) * | 2010-12-03 | 2012-06-07 | 新地能源工程技术有限公司 | Water-bath type vaporizer |
JP2017120125A (en) * | 2015-12-28 | 2017-07-06 | 株式会社神戸製鋼所 | Intermediate medium type carburetor |
WO2017115723A1 (en) * | 2015-12-28 | 2017-07-06 | 株式会社神戸製鋼所 | Intermediate medium carburetor |
JP2018132298A (en) * | 2017-01-13 | 2018-08-23 | ダイキン工業株式会社 | Water heat exchanger |
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