JPS62158996A - Shell and tube type heat exchanger - Google Patents
Shell and tube type heat exchangerInfo
- Publication number
- JPS62158996A JPS62158996A JP29919785A JP29919785A JPS62158996A JP S62158996 A JPS62158996 A JP S62158996A JP 29919785 A JP29919785 A JP 29919785A JP 29919785 A JP29919785 A JP 29919785A JP S62158996 A JPS62158996 A JP S62158996A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- welding
- flow path
- shell
- heat exchanger
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
- F28F9/182—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明はシェルアンドチューブ型熱交換器に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to a shell and tube heat exchanger.
（従来の技術）
シェルアンドチューブ型熱交換器は、そのシェル内に一
対の管板が配設され、内部空間が両管板の内側に位置す
る中央部流路室と、両管板の外側に位置する両側部流路
室とに分割されている。そして上記両管板のそれぞれに
チューブ挿入用の孔が穿設され、これらの孔に上記両側
部の流路室を連通ずるチューブの両端部が接合されてい
る。そして運転時においては熱交換を行う一方の流体は
一例部の流路室から他側部の流路室へと上記チューブを
通して導かれ、他方の流体は中央部の流路室を通される
。これによりチューブを介して両流体の熱交換が行われ
ることになるのである。(Prior art) A shell-and-tube heat exchanger has a pair of tube sheets disposed inside its shell, with a central passage chamber whose internal space is located inside both tube sheets, and a central passage chamber whose internal space is located inside both tube sheets. It is divided into flow passage chambers located on both sides. Holes for tube insertion are formed in each of the tube plates, and both ends of the tubes communicating with the flow passage chambers on both sides are joined to these holes. During operation, one fluid that performs heat exchange is guided through the tube from the channel chamber in one section to the channel chamber in the other side, and the other fluid is passed through the channel chamber in the central section. This allows heat exchange between the two fluids through the tube.
ところでこのようなシェルアンドチューブ型熱交換器に
おいて、管板にチューブを接合したところの構造は第５
図に示すようなものが知られている。すなわち管板３１
にチューブ挿入用の孔３２を穿設すると共に、この孔３
２にチューブ３３の端部を挿入し、側部流路室３４側か
ら管板３１とチューブ３３の突き合せ溶接を行い、中央
部流路室３５側から管板３１とチューブ３３の隅肉溶接
を行っている。図中、３６は突き合せ溶接部、３７は隅
肉溶接部を示している。By the way, in such a shell-and-tube heat exchanger, the structure where the tubes are joined to the tube sheet is the fifth one.
The one shown in the figure is known. That is, the tube sheet 31
A hole 32 for tube insertion is bored in the hole 3.
2, insert the end of the tube 33 into 2, perform butt welding of the tube plate 31 and tube 33 from the side passage chamber 34 side, and fillet weld the tube plate 31 and tube 33 from the central passage chamber 35 side. It is carried out. In the figure, 36 indicates a butt weld, and 37 indicates a fillet weld.
（発明が解決しようとする問題点）
ところで上記のようなシェルアンドチューブ型熱交換器
においては、強度上管板３１の厚みがチューブ３３の厚
みよりかなり厚めに設定されていることから、隅肉溶接
を行うときの溶接熱が主にチューブ３３側に滞るという
現象が生ずる。つまり管板３１は厚みがあるので、溶接
熱が他の部分に拡散してしまうのに対し、チューブ３３
は厚みが薄いので溶接箇所に熱が滞る訳である。したが
ってチューブ３３をあまり溶かさない範囲で溶接を行わ
なければならないことから、隅肉溶接部３７の管板３１
側において融合不良が発生しやすいと欠点があった。そ
して融合不良が生ずると、この部分に次の反応により隙
間腐食が発生することになる。(Problems to be Solved by the Invention) By the way, in the shell-and-tube heat exchanger as described above, the thickness of the tube plate 31 is set to be considerably thicker than the thickness of the tube 33 for strength reasons. A phenomenon occurs in which the welding heat during welding is mainly retained on the tube 33 side. In other words, since the tube sheet 31 is thick, the welding heat will diffuse to other parts, whereas the tube sheet 31
Since it is thin, heat accumulates in the welding area. Therefore, since welding must be performed within a range that does not melt the tube 33 too much, the tube plate 31 at the fillet weld 37 is
The drawback is that poor fusion tends to occur on the sides. If fusion failure occurs, crevice corrosion will occur in this area due to the following reaction.
隙間外 ０２＋ ２１１２０ ＋ ４ ｅ’−→４０
「隙間内 ４ Ｍ−４Ｍ”＋ ４ ｅ−この腐食反応
は一般に酸素濃淡電池と呼ばれているが、結局この隙間
腐食を起点に応力腐食割れが発生することとなる。Outside the gap 02+ 21120 + 4 e'-→40
"Inside crevice 4M-4M"+4e- This corrosion reaction is generally called oxygen concentration cell, but eventually stress corrosion cracking will occur starting from this crevice corrosion.
この発明は上記した従来の欠点を解決するためになされ
たものであって、その目的は、管板の厚みとチューブの
厚みが大幅に異なっていても管板とチューブとの接合を
上記のような融合不良を生ずることなく、良好に行なう
ことのできるシェルアンドチューブ型熱交換器を提供す
ることにある。This invention was made to solve the above-mentioned conventional drawbacks, and its purpose is to connect the tube sheet and tube as described above even if the thickness of the tube sheet and the tube are significantly different. It is an object of the present invention to provide a shell-and-tube heat exchanger that can be operated satisfactorily without causing poor fusion.
（問題点を解決するための手段）
そこでこの発明のシェルアンドチューブ型熱交換器にお
いては、上記のような熱交換器において、管板１のチュ
ーブ挿入用の孔２の内周面に凹溝３を周設し、このチュ
ーブ挿入用の孔２にチューブ７の端部を挿入し、管板１
における上記凹溝３よりも中央部流路室４側の位置にお
いて上記管板１とチューブ７とを接合しである。(Means for solving the problem) Therefore, in the shell-and-tube heat exchanger of the present invention, in the heat exchanger as described above, a concave groove is formed on the inner peripheral surface of the tube insertion hole 2 of the tube sheet 1. 3 is provided around the tube plate 1, and the end of the tube 7 is inserted into the tube insertion hole 2, and the tube plate 1 is inserted.
The tube plate 1 and the tube 7 are joined at a position closer to the central channel chamber 4 than the groove 3.
（作用〉
上記のようにチューブ挿入用の孔２の内周面に凹溝３を
周設しであると、これにより管板１の上記凹溝３よりも
中央部流路室４例の厚みがチューブ７の厚みに近付くこ
とになる。したがって管板１とチューブ７とを接合する
手段として、例えばアーク溶接を用いた場合でも、略同
じ厚みのもの同士を溶接するのと等しい状態となり、融
合不良が発生するようなことはなくなる。(Function) As described above, if the groove 3 is provided around the inner peripheral surface of the tube insertion hole 2, the thickness of the four central passage chambers will be smaller than the groove 3 of the tube plate 1. approaches the thickness of the tube 7. Therefore, even if, for example, arc welding is used as a means of joining the tube sheet 1 and the tube 7, the state will be equivalent to welding two pieces of approximately the same thickness, and fusion will occur. There will be no more defects.
（実施例）
次にこの発明のシェルアンドチューブ型熱交換器の具体
的な実施例について、図面を参照しつつ詳細に説明する
。(Embodiments) Next, specific embodiments of the shell-and-tube heat exchanger of the present invention will be described in detail with reference to the drawings.
第１図は第１実施例を示している。図において、１は管
板、２はこの管板１に穿設されたチューブ挿入用の孔、
３はこの孔２の内周面の中央部流路室４側寄りに周設さ
れた凹溝であって、この凹溝３の内部空間は上記管板１
内に穿設された空気抜孔５によって側部流路室６内に連
通している。そして上記チューブ挿入用の孔２に両側部
の流路室６．６を連通するチューブ７の端部が挿入され
、上記側部流路室６側から管板１と該チューブ７の突き
合せ溶接が行われると共に、管板１における上記凹溝３
よりも中央部流路室４側の位置において管板１とチュー
ブ７との重ね溶接がチューブ７内側から行われている。FIG. 1 shows a first embodiment. In the figure, 1 is a tube plate, 2 is a hole drilled in the tube plate 1 for inserting a tube,
Reference numeral 3 denotes a concave groove provided around the inner peripheral surface of the hole 2 near the central portion of the channel chamber 4, and the internal space of the concave groove 3 is defined by the tube plate 1.
It communicates with the inside of the side passage chamber 6 through an air vent hole 5 bored therein. Then, the ends of the tubes 7 communicating with the channel chambers 6.6 on both sides are inserted into the tube insertion holes 2, and the tube plate 1 and the tubes 7 are butt-welded from the side channel chambers 6 side. is carried out, and the groove 3 in the tube sheet 1 is
Lap welding of the tube plate 1 and the tube 7 is performed from inside the tube 7 at a position closer to the central flow path chamber 4 than the above.
溶接は何れもＴＩＧ熔接で行われているが、上記重ね溶
接部においては、チューブ７の裏面外周部に、隅肉状の
裏波ビード９ａが形成されるようにしておくのが好まし
い。この場合管板１とチューブ７の構成部材としては、
Ｃｒ−Ｍｏ鋼、ステンレス鋼、Ｎｉ基合金、黄銅等が適
当である。なお図中、８は突き合せ溶接部、９は重ね溶
接部を示している。All of the welding is performed by TIG welding, but it is preferable that a fillet-like uranami bead 9a be formed on the outer periphery of the back surface of the tube 7 in the overlap welding section. In this case, the constituent members of the tube plate 1 and tubes 7 are:
Cr-Mo steel, stainless steel, Ni-based alloy, brass, etc. are suitable. In the figure, 8 indicates a butt weld, and 9 indicates an overlap weld.
上記のようにチューブ挿入用の孔２の内周面に凹溝３が
周設されていると、管板１の上記凹溝３よりも中央部流
路室４側での熱拡散量が減少し、これにより融合不良が
発生するようなことはなくなる。つまり上記裏波ビード
９ａの形成が容易となり、これによりチューブ挿入用の
孔２とチューブ７外周面との間に融合不良に起因する隙
間が形成されるのを防止し得る。When the groove 3 is provided around the inner peripheral surface of the tube insertion hole 2 as described above, the amount of heat diffusion on the side of the central channel chamber 4 is reduced compared to the groove 3 of the tube plate 1. However, this prevents fusion failure from occurring. In other words, the formation of the above-mentioned Uranami bead 9a becomes easy, and thereby it is possible to prevent a gap from being formed between the tube insertion hole 2 and the outer circumferential surface of the tube 7 due to poor fusion.
第２図は第２実施例を示している。本実施例においては
、管板１における凹溝３よりも中央部流路室４例の位置
において管板１とデユープ７の抵抗シーム溶接が行われ
ている。なお、突き合せ溶接やシーム溶接に代えて管板
１にチューブ７を面相接合するようにしてもよい。これ
は管板１あるいはチューブ７にアルミ合金等を用いる場
合に特に有効である。FIG. 2 shows a second embodiment. In this embodiment, the resistance seam welding between the tube sheet 1 and the duplex 7 is performed at the position of the four central passage chambers, rather than the groove 3 in the tube sheet 1. Note that instead of butt welding or seam welding, the tube 7 may be joined to the tube sheet 1 in a face-to-face manner. This is particularly effective when aluminum alloy or the like is used for the tube plate 1 or tube 7.
第３図は第３実施例を示している。本実施例においても
、管板１における凹溝３よりも中央部流路室４側の位置
において管板１とチューブ７の隅肉溶接が行われている
が、上記第１実施例と異なり、隅肉溶接が中央部流路室
４側から行われている。つまりチューブ挿入用の孔２の
内周面に凹溝３が周設されていれば、隅肉溶接をチュー
ブ７の外側から行なう場合でも溶接不良を発生させるよ
うなことがなくて済むということである。なお、本実施
例においても突き合せ溶接及び隅肉溶接はＴＩＧ溶接で
行われている。FIG. 3 shows a third embodiment. In this embodiment as well, the tube plate 1 and the tubes 7 are fillet welded at a position closer to the central channel chamber 4 than the concave groove 3 in the tube plate 1, but unlike the first embodiment, Fillet welding is performed from the central channel chamber 4 side. In other words, if the groove 3 is provided around the inner peripheral surface of the tube insertion hole 2, there will be no welding defects even when fillet welding is performed from the outside of the tube 7. be. In this embodiment as well, butt welding and fillet welding are performed by TIG welding.
第４図は第４実施例を示している。本実施例は上記第３
実施例における管板１のチューブ挿入用の孔２の中央部
流路室４側の開口縁に開先１１を形成したものであって
、その他の構成は第３実施例と変らない。このように管
板１に開先１１を積極的に形成することにより、より強
固な接合が可能となる。FIG. 4 shows a fourth embodiment. This example is based on the third
A groove 11 is formed at the opening edge of the tube insertion hole 2 of the tube plate 1 in the embodiment on the side of the central passage chamber 4, and other configurations are the same as in the third embodiment. By proactively forming the grooves 11 in the tube sheet 1 in this way, stronger joining becomes possible.
なおこの発明の熱交換器には、通常の熱交換機能を目的
とする機器はもちろんのこと、反応塔等のように熱交換
機能を伴なう機器も包含されるものである。Note that the heat exchanger of the present invention includes not only equipment intended for a normal heat exchange function but also equipment with a heat exchange function such as a reaction tower.
（発明の効果）
この発明のシェルアンドチューブ型熱交換器においては
、上記のようにチューブ挿入用の孔の内周面に凹溝を周
設し、管板の上記凹溝よりも中央部流路室側の厚みがチ
ューブの厚みに近付くようにしであるので、管板とチュ
ーブとを接合する手段として例えば溶接による場合でも
融合不良が発生するのを防止でき、両者を良好に接合す
ることができる。したがって隙間腐食及びこれに起因す
る応力腐食割れ等を根本的に解決することができる。(Effects of the Invention) In the shell-and-tube heat exchanger of the present invention, a groove is provided around the inner circumferential surface of the hole for inserting the tube as described above, and the central part of the tube sheet is flowed more than the groove. Since the thickness on the side of the tube is close to the thickness of the tube, it is possible to prevent poor fusion from occurring even when welding is used as a means of joining the tube sheet and the tube, and it is possible to properly join the two. can. Therefore, crevice corrosion and stress corrosion cracking caused by this can be fundamentally solved.
第１図はこの発明の第１実施例を示すシェルアンドチュ
ーブ型熱交換器の要部縦断面図、第２図はこの発明の第
２実施例の要部縦断面図、第３図はこの発明の第３実施
例の要部縦断面図、第４図はこの発明の第４実施例の要
部縦断面図、第５図は従来例の要部縦断面図である。
１・・・管板、２・・・チューブ挿入用の孔、３・・・
凹溝、４・・・中央部流路室、６・・・側部流路室、７
・・・チューブ。FIG. 1 is a vertical cross-sectional view of a main part of a shell-and-tube heat exchanger showing a first embodiment of the invention, FIG. 2 is a longitudinal cross-sectional view of a main part of a second embodiment of the invention, and FIG. FIG. 4 is a longitudinal cross-sectional view of a main part of a third embodiment of the invention, FIG. 4 is a longitudinal cross-sectional view of a main part of a fourth embodiment of the invention, and FIG. 5 is a longitudinal cross-sectional view of a main part of a conventional example. 1... Tube plate, 2... Hole for tube insertion, 3...
Concave groove, 4... Central channel chamber, 6... Side channel chamber, 7
···tube.
Claims (1)
置する中央部流路室と、両管板の外側に位置する両側部
流路室とに分割し、上記両管板にチューブ挿入用の孔を
穿設し、この両管板のチューブ挿入用の孔に上記両側部
の流路室を連通するチューブの両端部を接合して成るシ
ェルアンドチューブ型熱交換器において、上記管板のチ
ューブ挿入用の孔の内周面に凹溝を周設し、このチュー
ブ挿入用の孔にチューブの端部を挿入し、管板における
上記凹溝よりも中央部流路室側の位置において上記管板
とチューブとを接合してあることを特徴とするシェルア
ンドチューブ型熱交換器。1. A pair of tube sheets is arranged inside the shell, and the tube is divided into a central passage chamber located inside both tube sheets and a flow passage chamber located on both sides located outside both tube sheets. In a shell-and-tube heat exchanger, in which holes for tube insertion are bored in the plate, and both ends of tubes communicating with the flow passage chambers on both sides are joined to the holes for tube insertion in both tube sheets. , a concave groove is provided around the inner peripheral surface of the tube insertion hole of the tube sheet, and the end of the tube is inserted into the tube insertion hole, so that the central flow path chamber A shell-and-tube heat exchanger, characterized in that the tube sheet and tube are joined at a side position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29919785A JPS62158996A (en) | 1985-12-28 | 1985-12-28 | Shell and tube type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29919785A JPS62158996A (en) | 1985-12-28 | 1985-12-28 | Shell and tube type heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62158996A true JPS62158996A (en) | 1987-07-14 |
Family
ID=17869395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29919785A Pending JPS62158996A (en) | 1985-12-28 | 1985-12-28 | Shell and tube type heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62158996A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006090626A1 (en) * | 2005-02-23 | 2006-08-31 | Izumi Food Machinery Co., Ltd. | Multitubular heat exchanger |
| WO2007082515A1 (en) * | 2006-01-23 | 2007-07-26 | Alstom Technology Ltd. | Tube bundle heat exchanger |
| JP2010117121A (en) * | 2008-10-14 | 2010-05-27 | Iwai Kikai Kogyo Co Ltd | Method for manufacturing shell-and-tube heat exchanger, shell-and-tube heat exchanger welded and fixed by the method, and manufacturing device for the same |
| CN101799253A (en) * | 2010-03-18 | 2010-08-11 | 王子异 | Heat exchanger with sealed cover plate structure |
| JP2012533722A (en) * | 2009-07-16 | 2012-12-27 | ロッキード マーティン コーポレーション | Spiral tube bundle assembly device for heat exchanger |
| US9388798B2 (en) | 2010-10-01 | 2016-07-12 | Lockheed Martin Corporation | Modular heat-exchange apparatus |
| US9670911B2 (en) | 2010-10-01 | 2017-06-06 | Lockheed Martin Corporation | Manifolding arrangement for a modular heat-exchange apparatus |
| US9777971B2 (en) | 2009-10-06 | 2017-10-03 | Lockheed Martin Corporation | Modular heat exchanger |
| US10094626B2 (en) | 2015-10-07 | 2018-10-09 | Arvos Ljungstrom Llc | Alternating notch configuration for spacing heat transfer sheets |
| US10175006B2 (en) | 2013-11-25 | 2019-01-08 | Arvos Ljungstrom Llc | Heat transfer elements for a closed channel rotary regenerative air preheater |
| US10197337B2 (en) | 2009-05-08 | 2019-02-05 | Arvos Ljungstrom Llc | Heat transfer sheet for rotary regenerative heat exchanger |
| US10209015B2 (en) | 2009-07-17 | 2019-02-19 | Lockheed Martin Corporation | Heat exchanger and method for making |
| US10378829B2 (en) | 2012-08-23 | 2019-08-13 | Arvos Ljungstrom Llc | Heat transfer assembly for rotary regenerative preheater |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5727398A (en) * | 1980-07-28 | 1982-02-13 | Hitachi Ltd | Digital signal-synchro signal reproducing circuit |
-
1985
- 1985-12-28 JP JP29919785A patent/JPS62158996A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5727398A (en) * | 1980-07-28 | 1982-02-13 | Hitachi Ltd | Digital signal-synchro signal reproducing circuit |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006090626A1 (en) * | 2005-02-23 | 2006-08-31 | Izumi Food Machinery Co., Ltd. | Multitubular heat exchanger |
| US9534850B2 (en) | 2006-01-23 | 2017-01-03 | Arvos Technology Limited | Tube bundle heat exchanger |
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