JP2001201279A - Hot-water bath type vaporizer - Google Patents
Hot-water bath type vaporizerInfo
- Publication number
- JP2001201279A JP2001201279A JP2000014231A JP2000014231A JP2001201279A JP 2001201279 A JP2001201279 A JP 2001201279A JP 2000014231 A JP2000014231 A JP 2000014231A JP 2000014231 A JP2000014231 A JP 2000014231A JP 2001201279 A JP2001201279 A JP 2001201279A
- Authority
- JP
- Japan
- Prior art keywords
- heat transfer
- hot water
- water bath
- transfer tube
- tube bundle
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0017—Flooded core heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
- F28D7/085—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0061—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications
- F28D2021/0064—Vaporizers, e.g. evaporators
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Details Of Heat-Exchange And Heat-Transfer (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、液化天然ガス（以
下、ＬＮＧと称する。）等の低温気体を温水等の熱源流
体を用いて気化する熱源流体式気化器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat source fluid type vaporizer for vaporizing a low temperature gas such as liquefied natural gas (hereinafter, LNG) using a heat source fluid such as hot water.
【０００２】[0002]
【従来の技術】小規模のＬＮＧ基地において、ＬＮＧ等
の低温液体を連続気化する手段としては、温水バス内に
給排される温水等の熱源流体を用いる温水バス式気化器
が知られている。2. Description of the Related Art In a small-scale LNG terminal, as a means for continuously vaporizing low-temperature liquid such as LNG, a hot water bath type vaporizer using a heat source fluid such as hot water supplied and discharged into a hot water bath is known. .
【０００３】温水バス式気化器の一例を図４及び図５に
示す。図４及び図５はＬＮＧ気化器を示し、この気化器
は、温水バス５１、及び伝熱管束５３を備えている。温
水バス５１は、両端を閉鎖した角シェル５４と、角シェ
ル５４内を仕切る堰板５５とを備えている。温水バス５
１内には、角シェル５４側面の温水入口５６、温水分散
管５７により温水７０が供給される。供給された温水７
０は、堰５５よりオーバーフローし、ダウンカマー５８
に溜まり、温水出口５９からボイラ系の次工程に送出さ
れる。また、角シェル５４は、角構造であるため、強度
的に極めて弱く、多数の補強部材６０で補強されてい
る。さらに、温水バス５１の外表面は、熱放散を防ぐた
め、断熱材６１で覆われている。伝熱管束５３は、角シ
ェル５４内に設けられ、１８０°リターンベンドを有す
る屈曲した多パスの伝熱管５２を多数整列配置して形成
されている。各伝熱管５２は、角シェル５４内の入口ヘ
ッダー６２及び出口ヘッダー６３に接続されている。FIGS. 4 and 5 show an example of a hot water bath type vaporizer. FIGS. 4 and 5 show an LNG vaporizer, which includes a hot water bath 51 and a heat transfer tube bundle 53. The hot water bath 51 includes a square shell 54 having both ends closed, and a weir plate 55 that partitions the inside of the square shell 54. Hot water bath 5
Inside 1, hot water 70 is supplied by a hot water inlet 56 on the side surface of the square shell 54 and a hot water dispersing pipe 57. Hot water supplied 7
0 overflows from the weir 55 and the downcomer 58
And is sent out from the hot water outlet 59 to the next step of the boiler system. Further, since the square shell 54 has a square structure, it is extremely weak in strength and is reinforced by a large number of reinforcing members 60. Further, the outer surface of the hot water bath 51 is covered with a heat insulating material 61 to prevent heat dissipation. The heat transfer tube bundle 53 is provided in a square shell 54, and is formed by arranging a large number of bent multi-pass heat transfer tubes 52 having a 180 ° return bend. Each heat transfer tube 52 is connected to an inlet header 62 and an outlet header 63 in the square shell 54.
【０００４】このような気化器において、温水７０は、
温水入口５６から温水分散管５７により分散され、温水
バス５１内に均等供給される。一方、気化対象であるＬ
ＮＧは、入口６４から供給され、入口ヘッダー６２によ
り各伝熱管５２に分配される。この各伝熱管５２内のＬ
ＮＧと温水バス５１内の温水７０との熱交換により、そ
の熱を受けてＬＮＧが各伝熱管５２内で気化し、天然ガ
ス（以下、ＮＧと称する。）となる。このＮＧは、温水
７０の熱を受けて各伝熱管５２内で加温され、出口ヘッ
ダー６３に集合し、出口６５より次工程に送出される。
また、供給された温水７０は、ＬＮＧとの熱交換により
温度を下げて、堰板５５よりオーバーフローし、ダウン
カマー５８に溜まり、温水出口５９よりボイラ系の次工
程に送出される。従って、この温水バス式気化器によれ
ば、温水７０の給排を繰り返すことによって、ＬＮＧを
連続的に気化させることができる。[0004] In such a vaporizer, the hot water 70
The hot water is dispersed from a hot water inlet 56 by a hot water dispersing pipe 57 and is uniformly supplied into the hot water bath 51. On the other hand, L to be vaporized
NG is supplied from the inlet 64 and is distributed to each heat transfer tube 52 by the inlet header 62. L in each heat transfer tube 52
Due to the heat exchange between the NG and the hot water 70 in the hot water bath 51, the heat is received and the LNG is vaporized in each heat transfer tube 52 to become natural gas (hereinafter, referred to as NG). The NG is heated in each of the heat transfer tubes 52 by receiving the heat of the hot water 70, collected in the outlet header 63, and sent out from the outlet 65 to the next step.
The supplied hot water 70 has its temperature lowered by heat exchange with LNG, overflows from the weir plate 55, accumulates in the downcomer 58, and is sent from the hot water outlet 59 to the next step of the boiler system. Therefore, according to this hot water bath type vaporizer, LNG can be continuously vaporized by repeatedly supplying and discharging the hot water 70.
【０００５】[0005]
【発明が解決しようとする課題】従来の温水バス式気化
器は、図４及び図５に示す通り、角シェル５４を角構造
とし、各伝熱管５２を１８０°リターンベンドを有する
多パスにして、これを多数整列配置しているので、温水
バス５１を大きなバスサイズとする必要がある。角シェ
ル５４が角構造であるため強度的に弱く、補強部材６０
を多く必要とする。以上のことから、温水バス式気化器
が大型化し、小規模の基地への設置面積及び製品重量も
大きくなる。温水バス５１が大きなバスサイズである
と、温水７０の供給量が多くなり、満水重量が大きく従
って基礎重量も大となる。また、温水バス５１の基地へ
の設置は補強部材６０を据付けて行うので、断熱材６１
の工事は、現地据付け後では角シェル５４の底ができな
いため、製作工場内での施工が必要であった。As shown in FIGS. 4 and 5, the conventional hot-water bath vaporizer has a square shell 54 having a square structure and each heat transfer tube 52 having a multi-pass having a 180 ° return bend. Since a large number of these are arranged, it is necessary to make the hot water bath 51 a large bath size. Since the square shell 54 has a square structure, it is weak in strength and the reinforcing member 60
Need more. From the above, the size of the hot water bath vaporizer increases, and the installation area and product weight on a small-scale base also increase. If the hot water bath 51 has a large bath size, the supply amount of the hot water 70 increases, and the full water weight is large, and accordingly, the basic weight is also large. Since the hot water bus 51 is installed at the base with the reinforcing member 60 installed, the heat insulating material 61 is installed.
In the above construction, since the bottom of the square shell 54 cannot be formed after the installation on site, the construction in the production factory was necessary.
【０００６】本発明は、かかる事情に鑑み、軽量、小型
化を図ることでき、しかも安価な温水バス式気化器を提
供することを目的とする。The present invention has been made in view of the above circumstances, and has as its object to provide an inexpensive hot water bath carburetor that can be reduced in weight and size.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
の手段として、本発明は、温水バスを形成するシェル本
体内に、温水と熱交換して液化ガスを蒸発させる伝熱管
束を設け、この伝熱管束を、端部に複数の１８０°リタ
ーンベンドを有する多パスの伝熱管を多数列並べて形成
してなる温水バス式気化器において、前記シェル本体を
水平円筒型にし、前記円筒の軸方向から見て、前記伝熱
管束の前記伝熱管が円筒断面内に有効に配置できるよう
に前記リターンヘッドを斜めを含む配置にしたものであ
る。この構成によれば、シェル本体を水平円筒型にする
ことにより、角シェルのような補強部材が必要なくな
り、製品重量の低減を図ることができる。伝熱管束の伝
熱管は、リターンベンドを斜めを含む配置にすることに
より、シェル本体の円筒断面内に有効配置できる。ま
た、据付け現場では、シェル本体の円周を支持するだけ
で据付けられ、断熱材工事も据付けた後でもシェル本体
の円周に施工できる。As a means for solving the above-mentioned problems, the present invention provides a heat transfer tube bundle for exchanging heat with hot water to evaporate a liquefied gas in a shell body forming a hot water bath, In a hot water bath type vaporizer in which this heat transfer tube bundle is formed by arranging a large number of multi-pass heat transfer tubes having a plurality of 180 ° return bends at ends, the shell main body is formed into a horizontal cylindrical shape, and a shaft of the cylinder is formed. When viewed from the direction, the return head is obliquely arranged so that the heat transfer tubes of the heat transfer tube bundle can be effectively arranged in a cylindrical cross section. According to this configuration, by making the shell body a horizontal cylindrical type, a reinforcing member such as a square shell is not required, and the weight of the product can be reduced. The heat transfer tubes of the heat transfer tube bundle can be effectively arranged within the cylindrical cross section of the shell body by arranging the return bend so as to include the slant. In addition, at the installation site, the installation is performed only by supporting the circumference of the shell main body, and the installation can be performed on the circumference of the shell main body even after the installation of the heat insulating material.
【０００８】また、リターンベンドにより多パスの伝熱
管の各列が上下に配置されて前記伝熱管束が形成され、
前記水平円筒の両側面に一対の整流板が設けられるもの
である。水平円筒の両側面に一対の整流板を設けること
により、伝熱管束とシェル本体の内周との間で温水がバ
イパスするスペースをなくすことができる。さらに、前
記一対の整流板の少なくとも一方が前記温水の堰板と兼
用することが好ましい。これにより、伝熱管束の伝熱管
に対する温水の流動分布を良くすることができる。[0008] Further, the heat transfer tube bundle is formed by arranging the rows of multi-pass heat transfer tubes vertically by return bending.
A pair of rectifying plates are provided on both side surfaces of the horizontal cylinder. By providing a pair of straightening plates on both side surfaces of the horizontal cylinder, it is possible to eliminate a space in which hot water bypasses between the heat transfer tube bundle and the inner periphery of the shell main body. Furthermore, it is preferable that at least one of the pair of straightening plates also serves as the hot water weir plate. Thereby, the flow distribution of the hot water with respect to the heat transfer tubes of the heat transfer tube bundle can be improved.
【０００９】[0009]
【発明の実施の形態】以下、本発明の好ましい実施の形
態を図１〜図３に基づいて説明する。図１は、本発明の
実施形態に係る温水バス式気化器を示す断面正面図であ
り、図２は、図１のＡ−Ａ断面図であり、図３は、図１
及び図２における伝熱管束の伝熱管の配置態様を示す拡
大斜視図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a sectional front view showing a hot water bath type vaporizer according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG.
3 is an enlarged perspective view showing an arrangement of heat transfer tubes of the heat transfer tube bundle in FIG. 2. FIG.
【００１０】図１及び図２に示す温水バス式気化器は、
小規模な基地に適したものであって、この気化器は、温
水バス１を形成するシェル本体２と、このシェル本体２
内に設けられる伝熱管束３と、一対の整流板１５，１６
を備えてなる。The hot water bath type vaporizer shown in FIG. 1 and FIG.
The vaporizer is suitable for a small base, and comprises a shell body 2 forming a hot water bath 1 and a shell body 2
Heat transfer tube bundle 3 provided in the inside, and a pair of rectifying plates 15 and 16
Is provided.
【００１１】シェル本体２は、水平円筒型に形成され、
両端を蓋板４，５で閉鎖することにより温水バス１を形
成する。シェル本体２は、水平円筒型であるため、強度
的に強く、補強部材を必要としない。シェル本体２内に
は、入口ベッダー６と、出口ヘッダー７と、温水分散管
８とを備えている。入口ヘッダー６及び出口ヘッダー７
は、蓋板４側で円筒断面の上下に配置され、温水分散管
８は円筒断面の下側に配置されている。また、シェル本
体２の側面には温水入口９及び温水出口１３が設けら
れ、シェル本体２の上面には２つのマンホール１０が設
けられている。温水２５は、温水入口９に供給され、温
水分散管８により温水バス１内に均等供給される。The shell body 2 is formed in a horizontal cylindrical shape,
The hot water bath 1 is formed by closing both ends with the lid plates 4 and 5. Since the shell body 2 is of a horizontal cylindrical type, it is strong in strength and does not require a reinforcing member. The shell main body 2 includes an inlet bed 6, an outlet header 7, and a hot water dispersion pipe 8. Inlet header 6 and outlet header 7
Are arranged above and below the cylindrical section on the side of the cover plate 4, and the hot water dispersion pipe 8 is arranged below the cylindrical section. A hot water inlet 9 and a hot water outlet 13 are provided on the side surface of the shell body 2, and two manholes 10 are provided on the upper surface of the shell body 2. The hot water 25 is supplied to the hot water inlet 9 and is evenly supplied into the hot water bath 1 by the hot water distribution pipe 8.
【００１２】伝熱管束３は、温水２５と熱交換してＬＮ
Ｇを蒸発させるもので、図２に明瞭に示されるように、
伝熱管１１を多数列並べて形成されており、各伝熱管１
１の各列が各ヘッダー６，７間の上下に配置されてな
る。各伝熱管１１は、１８０°リターンベンド１２を有
して屈曲しており、シェル本体２内に水平に延びて多数
回パスされる。また、各伝熱管１１の始端及び終端は、
各ヘッダー６，７内に接続されている。図２及び図３に
明瞭に示されるように、シェル本体２の内周の軸方向か
ら見て、各伝熱管１１は、複数のリターンベンド１２を
水平方向に対して並行、又は斜めに配置することによ
り、シェル本体２の内周に向けて広がるジグザグ状に配
置される。伝熱管１１の各リターンベンド１２は、上記
並行、斜め配置を選択・組合わせることにより、伝熱管
１１の各列間に隙間をあけ、シェル本体２の内周に広が
るようにしている。この伝熱管束３は、伝熱管１１の各
リターンベンド１２を並行、又は斜め配置するため、各
伝熱管１１をシェル本体２の円筒断面内に有効に配置で
きる。具体的には、図２に明瞭に示されるように、伝熱
管束３の両側にある伝熱管１１Ａ，１１Ｂであって、各
ヘッダー６，７側に最も近いリターンベンド１２Ａ，１
２Ｂを、各ヘッダー６，７又は水平方向に対して並行配
置する。各リターンベンド１２Ａ，１２Ｂの間にある他
のリターンベンド１２は、前記のように水平方向に対し
て斜め配置する。また、伝熱管１１Ａ，１１Ｂの間にあ
る他の伝熱管１１は、リターンベンド１２を前記のよう
に水平方向に対して並行、又は斜め配置し、伝熱管１１
の各列間に隙間をあけるようにジグザグ状に配置する。
これで、伝熱管束３は、水平方向と直交する側から押し
つぶした状態で、水平方向に長くなるように各伝熱管１
１を配置することになり、シェル本体２の円筒断面内に
有効に配置できる。なお、水平方向とは、各ヘッダー
６，７が延在して形成される方向である。The heat transfer tube bundle 3 exchanges heat with hot water 25 to make LN
G is evaporated, as clearly shown in FIG.
The heat transfer tubes 11 are formed by arranging a number of rows.
1 is arranged above and below each of the headers 6 and 7. Each heat transfer tube 11 is bent with a 180 ° return bend 12, extends horizontally in the shell body 2, and is passed many times. In addition, the start and end of each heat transfer tube 11 are
It is connected in each header 6,7. As clearly shown in FIGS. 2 and 3, when viewed from the axial direction of the inner periphery of the shell body 2, each heat transfer tube 11 arranges a plurality of return bends 12 in parallel or obliquely to the horizontal direction. Thereby, it is arranged in a zigzag shape that spreads toward the inner periphery of the shell main body 2. The return bends 12 of the heat transfer tubes 11 are formed by selecting and combining the above-described parallel and oblique arrangements so that a gap is provided between each row of the heat transfer tubes 11 so as to spread over the inner periphery of the shell main body 2. In the heat transfer tube bundle 3, the return bends 12 of the heat transfer tubes 11 are arranged in parallel or obliquely, so that each heat transfer tube 11 can be effectively arranged in the cylindrical cross section of the shell main body 2. Specifically, as clearly shown in FIG. 2, the heat transfer tubes 11A and 11B on both sides of the heat transfer tube bundle 3 and the return bends 12A and 1 closest to the respective headers 6 and 7 side.
2B is arranged in parallel with each header 6, 7 or the horizontal direction. The other return bends 12 between the return bends 12A and 12B are arranged obliquely with respect to the horizontal direction as described above. In the other heat transfer tubes 11 between the heat transfer tubes 11A and 11B, the return bends 12 are arranged in parallel or obliquely to the horizontal direction as described above.
Are arranged in a zigzag so as to leave a gap between the rows.
With this, the heat transfer tube bundle 3 is crushed from the side orthogonal to the horizontal direction, and each heat transfer tube 1 is elongated in the horizontal direction.
1 can be effectively arranged in the cylindrical cross section of the shell body 2. The horizontal direction is a direction in which each of the headers 6 and 7 extends.
【００１３】一対の整流板１５，１６は、シェル本体２
内の水平円筒の両側面に設けられている。図２に明瞭に
示されるように、各整流板１５，１６は、伝熱管束３の
両側に接近して配置されるため、伝熱管束３とシェル本
体２の内周との間で温水２５がバイパスするスペースを
なくすことができる。整流板１６は、出口ヘッダー７側
で傾けられており、供給される温水２５を堰止める堰板
と兼用されている。供給された温水２５は、整流板１６
よりオーバーフローし、ダウンカマー１８に溜まり、温
水出口１３からボイラ系の次工程に送出される。The pair of rectifying plates 15 and 16 are connected to the shell body 2.
It is provided on both sides of the horizontal cylinder inside. As is clearly shown in FIG. 2, since each of the flow straightening plates 15 and 16 is arranged close to both sides of the heat transfer tube bundle 3, the hot water 25 flows between the heat transfer tube bundle 3 and the inner periphery of the shell main body 2. Can eliminate the space for bypassing. The current plate 16 is inclined on the outlet header 7 side, and is also used as a dam plate for damping the supplied hot water 25. The supplied hot water 25 is supplied to the current plate 16.
It overflows more, accumulates in the downcomer 18, and is sent out from the hot water outlet 13 to the next step of the boiler system.
【００１４】前記温水バス式気化器において、温水２５
は、温水入口９から温水分散管８により分散され、温水
バス１内に均等供給される。一方、気化対象であるＬＮ
Ｇは、入口１７から供給され、入口ヘッダー６により伝
熱管束３の各伝熱管１１に分配される。この各伝熱管１
１内のＬＮＧと温水２５との熱交換により、その熱を受
けてＬＮＧが各伝熱管１１内で蒸発し、ＮＧとなる。こ
のＮＧは、温水２５の熱を受けて各伝熱管１１内で加温
され、出口ヘッダー７に集合し、出口１８より次工程に
送出される。In the hot water bath type vaporizer, the hot water 25
Are dispersed from the hot water inlet 9 by the hot water dispersing pipe 8 and are evenly supplied into the hot water bath 1. On the other hand, LN
G is supplied from the inlet 17 and is distributed by the inlet header 6 to each heat transfer tube 11 of the heat transfer tube bundle 3. Each of these heat transfer tubes 1
Due to the heat exchange between the LNG in 1 and the hot water 25, the LNG receives the heat and evaporates in each heat transfer tube 11 to become NG. The NG is heated in each heat transfer tube 11 by receiving the heat of the hot water 25, collected in the outlet header 7, and sent out from the outlet 18 to the next step.
【００１５】この温水バス式気化器は、シェル本体２を
水平円筒型にするため、角シェルのような補強部材が必
要なくなり、製品重量の低減を図ることができ、コスト
ダウンが図れる。また、伝熱管束３の各伝熱管１１は、
複数のリターンベンド１２を各ヘッダー６，７又は水平
方向に対して並行、又は斜め配置することにより、シェ
ル本体２の円筒断面内に有効配置でき、シェル本体２等
を含む気化器の小型化を図れる。また、気化器の小型化
を図ることにより、設置面積を少なくでき、満水重量を
少なくして基礎重量も小さくできる。また、据付け現場
では、図１に明瞭に示されるように、シェル本体２の円
周をサドル１９で支持するだけで据付けられ、断熱材２
０の工事も据付け後でもシェル本体２の円周に施工で
き、現地工事性及びメンテナンス性が向上する。In this hot water bath type vaporizer, since the shell body 2 is of a horizontal cylindrical type, a reinforcing member such as a square shell is not required, the weight of the product can be reduced, and the cost can be reduced. Each heat transfer tube 11 of the heat transfer tube bundle 3 is
By arranging the plurality of return bends 12 in parallel or obliquely with respect to each of the headers 6 and 7 or the horizontal direction, the return bends 12 can be effectively arranged within the cylindrical cross section of the shell main body 2, and the vaporizer including the shell main body 2 and the like can be reduced in size. I can do it. In addition, by reducing the size of the vaporizer, the installation area can be reduced, the full water weight can be reduced, and the basic weight can be reduced. Also, at the installation site, as is clearly shown in FIG. 1, the shell body 2 is installed only by supporting the circumference of the shell body 2 with the saddle 19, and the heat insulating material 2 is provided.
The work of No. 0 can be carried out around the shell body 2 even after the installation, and the workability on site and the maintainability are improved.
【００１６】一対の整流板１５，１６を設けることによ
り、伝熱管束３とシェル本体２の内周との間で温水２５
がバイパスするスペースをなくすことができ、温水２５
の伝熱管束３への循環が良くなり、温水２５とＬＮＧと
の熱交換を高めて、ＬＮＧの気化性能を向上することが
可能となる。。また、整流板１６を堰板と兼用すること
により、伝熱管束３の伝熱管１１に対する温２５水の流
動分布が良くなり、ＬＮＧの気化性能を向上することが
できる。By providing a pair of rectifying plates 15, 16, hot water 25 is supplied between the heat transfer tube bundle 3 and the inner periphery of the shell body 2.
Can eliminate the space for bypassing the hot water 25
The circulation of heat to the heat transfer tube bundle 3 is improved, and the heat exchange between the hot water 25 and LNG is enhanced, so that the vaporization performance of LNG can be improved. . In addition, by using the flow regulating plate 16 also as a weir plate, the flow distribution of the hot 25 water to the heat transfer tubes 11 of the heat transfer tube bundle 3 is improved, and the vaporization performance of LNG can be improved.
【００１７】さらに、伝熱管束３をシェル本体２から抜
き出せる構造とすることにより、蓋材４をシェル本体２
から取り外して行う伝熱管束３の検査及び保守が容易に
行うことができる。また、簡単な検査及び保守では、伝
熱管束３を抜き出すことなく、マンホール１０からオペ
レータがシェル本体２内に入って行うことも可能であ
る。Further, by providing a structure in which the heat transfer tube bundle 3 can be extracted from the shell main body 2, the cover member 4
The inspection and maintenance of the heat transfer tube bundle 3 which is detached from the tube can be easily performed. Further, in simple inspection and maintenance, it is possible for an operator to enter the shell main body 2 from the manhole 10 without extracting the heat transfer tube bundle 3.
【００１８】なお、本発明の実施形態は、図示のもに限
られず、例えば次のような形態をとることができる。 （１）伝熱管１１のリターンベンド１２の配置は、各ヘ
ッダー６，７に対して並行、斜めの他に、直交するもの
を選択・組合わせることで、伝熱管１１をジグザグ状に
配置できる。 （２）液化ガスとして液化天然ガスを気化することにつ
いて説明したが、これに限定されるものでなく、例え
ば、液化エチレン、ＬＯ2 （液化酸素）、ＬＮ2（液化
窒素）等を気化するものにも適用できる。 （３）各ヘッダー６，７は、シェル本体２の一端である
蓋板４側に配置するものに限られず、両側にそれぞれ配
置することもできる。 （４）各ヘッダー６，７は、管で形成する他、両端を閉
鎖した筒体内を仕切り板で仕切ることで形成することも
できる。The embodiments of the present invention are not limited to those shown in the drawings, and may take the following forms, for example. (1) The heat transfer tubes 11 can be arranged in a zigzag manner by selecting / combining the return bends 12 of the heat transfer tubes 11 by selecting and combining the headers 6 and 7 in parallel or obliquely, as well as orthogonally. (2) Although the description has been given of the case where liquefied natural gas is vaporized as the liquefied gas, the present invention is not limited to this. For example, liquefied ethylene, LO 2 (liquefied oxygen), LN 2 (liquefied nitrogen), etc. Also applicable to (3) The headers 6 and 7 are not limited to those arranged on the side of the cover plate 4 which is one end of the shell main body 2, but may be arranged on both sides. (4) Each of the headers 6 and 7 can be formed by partitioning a cylindrical body having both ends closed with a partition plate, in addition to being formed of a tube.
【００１９】[0019]
【発明の効果】以上のように本発明は、シェル本体を水
平円筒型に形成するため、角シェルのような補強部材が
必要なくなり、製品重量の低減を図ることができ、コス
トダウンが図れる。また、伝熱管束の各伝熱管は、リタ
ーンベンドを斜めを含む配置にすることにより、シェル
本体の円筒断面内に有効配置でき、シェル本体を含む気
化器の小型化を図れる。これにより、温水バス式気化器
の設置面積を少なくでき、満水重量を少なくして基礎重
量も小さくできる。さらに、シェル本体の円周を支持す
るだけで据付けられ、断熱材の工事も据付け後でもシェ
ル本体に施工でき、現地工事性及びメンテナンス性が向
上する。As described above, according to the present invention, since the shell body is formed in a horizontal cylindrical shape, a reinforcing member such as a square shell is not required, the product weight can be reduced, and the cost can be reduced. In addition, the heat transfer tubes of the heat transfer tube bundle can be effectively arranged in the cylindrical cross section of the shell main body by arranging the return bend so as to include the slant, and the vaporizer including the shell main body can be downsized. As a result, the installation area of the hot water bath type vaporizer can be reduced, the full water weight can be reduced, and the basic weight can be reduced. Furthermore, it is installed only by supporting the circumference of the shell main body, and the work of the heat insulating material can be performed on the shell main body even after the installation, so that the on-site workability and maintainability are improved.
【図１】本発明の実施形態に係る温水バス式気化器を示
す断面正面図である。FIG. 1 is a sectional front view showing a hot water bath type vaporizer according to an embodiment of the present invention.
【図２】図１のＡ−Ａ断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】図１、図２における伝熱管束の伝熱管の配置態
様を示す拡大斜視図である。FIG. 3 is an enlarged perspective view showing an arrangement of heat transfer tubes in the heat transfer tube bundle in FIGS. 1 and 2;
【図４】従来の温水バス式気化器を示す断面正面図であ
る。FIG. 4 is a sectional front view showing a conventional hot water bath type vaporizer.
【図５】図４のＢ−Ｂ断面図である。FIG. 5 is a sectional view taken along line BB of FIG. 4;
１ 温水バス ２ シェル本体 ３ 伝熱管束 １１ 伝熱管 １２ リターンベンド １５ 整流板 １６ 整流板 DESCRIPTION OF SYMBOLS 1 Hot water bath 2 Shell main body 3 Heat transfer tube bundle 11 Heat transfer tube 12 Return bend 15 Rectifier plate 16 Rectifier plate
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3E073 DC11 DC32 3L065 DA04 3L103 AA03 AA05 AA11 AA31 BB30 CC02 CC12 DD06 DD18 DD42 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E073 DC11 DC32 3L065 DA04 3L103 AA03 AA05 AA11 AA31 BB30 CC02 CC12 DD06 DD18 DD42
Claims (3)
水と熱交換して液化ガスを蒸発させる伝熱管束を設け、
この伝熱管束を、端部に複数の１８０°リターンベンド
を有する多パスの伝熱管を多数列並べて形成してなる温
水バス式気化器において、前記シェル本体を水平円筒型
にし、前記円筒の軸方向から見て、前記伝熱管束の前記
伝熱管が円筒断面内に有効に配置できるように前記リタ
ーンヘッドを斜めを含む配置にしたことを特徴とする温
水バス式気化器。1. A heat transfer tube bundle for exchanging heat with hot water and evaporating a liquefied gas is provided in a shell main body forming a hot water bath,
In a hot water bath type vaporizer in which this heat transfer tube bundle is formed by arranging a large number of multi-pass heat transfer tubes having a plurality of 180 ° return bends at ends, the shell main body is formed into a horizontal cylindrical shape, and a shaft of the cylinder is formed. A hot-water bath type vaporizer, wherein the return head is obliquely arranged so that the heat transfer tubes of the heat transfer tube bundle can be effectively arranged in a cylindrical cross section when viewed from a direction.
各列が上下に配置されて前記伝熱管束が形成され、前記
水平円筒の両側面に一対の整流板が設けられることを特
徴とする請求項１に記載の温水バス式気化器。2. The heat transfer tube bundle is formed by arranging a plurality of rows of heat transfer tubes in a multi-pass manner by return bend, and a pair of straightening plates is provided on both side surfaces of the horizontal cylinder. Item 2. A hot water bath type vaporizer according to item 1.
記温水の堰板と兼用されていることを特徴とする請求項
２に記載の温水バス式気化器。3. The hot water bath vaporizer according to claim 2, wherein at least one of the pair of straightening plates is also used as the hot water dam plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000014231A JP3965012B2 (en) | 2000-01-20 | 2000-01-20 | Hot water bath vaporizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000014231A JP3965012B2 (en) | 2000-01-20 | 2000-01-20 | Hot water bath vaporizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001201279A true JP2001201279A (en) | 2001-07-27 |
| JP3965012B2 JP3965012B2 (en) | 2007-08-22 |
Family
ID=18541715
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000014231A Expired - Lifetime JP3965012B2 (en) | 2000-01-20 | 2000-01-20 | Hot water bath vaporizer |
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| Country | Link |
|---|---|
| JP (1) | JP3965012B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010038330A (en) * | 2008-08-07 | 2010-02-18 | Kobe Steel Ltd | Hot water bath type vaporizer |
| JP2021101118A (en) * | 2019-12-24 | 2021-07-08 | 株式会社神戸製鋼所 | Liquefied gas vaporizer |
-
2000
- 2000-01-20 JP JP2000014231A patent/JP3965012B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010038330A (en) * | 2008-08-07 | 2010-02-18 | Kobe Steel Ltd | Hot water bath type vaporizer |
| JP2021101118A (en) * | 2019-12-24 | 2021-07-08 | 株式会社神戸製鋼所 | Liquefied gas vaporizer |
| JP7214619B2 (en) | 2019-12-24 | 2023-01-30 | 株式会社神戸製鋼所 | liquefied gas vaporizer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3965012B2 (en) | 2007-08-22 |
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