JPH0624707Y2 - Multi-tube heat exchanger - Google Patents
Multi-tube heat exchangerInfo
- Publication number
- JPH0624707Y2 JPH0624707Y2 JP1987000092U JP9287U JPH0624707Y2 JP H0624707 Y2 JPH0624707 Y2 JP H0624707Y2 JP 1987000092 U JP1987000092 U JP 1987000092U JP 9287 U JP9287 U JP 9287U JP H0624707 Y2 JPH0624707 Y2 JP H0624707Y2
- Authority
- JP
- Japan
- Prior art keywords
- tube plate
- main body
- floating
- floating tube
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Description
【考案の詳細な説明】 〔考案の目的〕 （産業上の利用分野） 本考案は遊動管板を有する多管式熱交換器に係り、特
に、遊動管板の摺動部からの内部流体の外部への漏洩を
防止するのに好適な多管式熱交換器に関する。DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention] (Industrial field of application) The present invention relates to a multi-tube heat exchanger having a floating tube plate, and more particularly, to an internal fluid from a sliding portion of the floating tube plate. The present invention relates to a multi-tube heat exchanger suitable for preventing leakage to the outside.
（従来の技術） 多管式熱交換器は第２図に示されるように、本体胴１、
伝熱管２、管板３及び水室胴４により構成される。本体
胴１と水室胴４とは、管板３により分離されており、本
体胴１内に配設される伝熱管２の表面を介し、本体胴１
内流体と水室胴４内流体が熱交換を行う構造となってい
る。一般的に伝熱管２は熱伝達性能を重視する立場から
銅系統の材料が使用されることが多いのに対し、本体胴
は内圧を考慮し、鉄系統の材料が使用される。又、伝熱
管２内の流体と本体胴１内、即ち伝熱管外の流体温度が
異なるため、伝熱管２と本体胴１の熱膨張差により、管
板３及び伝熱管２に応力が生じる。従来、この応力を軽
減するため、一方の管板を本体に固定し、他方の管板を
本体胴内面に沿って軸方向に滑らせる遊動管板を採用す
ることがある。この遊動管板を有する多管式熱交換器は
第３図に示されるように固定管板５が一方の水室胴４の
本体胴１の結合部に、又遊動管板６が他方の結合部に各
々設けられる。この遊動管板６の外周は第４図に示され
るように本体胴１に内接するように製作されており、本
体胴１及び水室胴４の内周に刻まれた溝７にＯ−リング
８を挿入し、Ｏ−リングが遊動管板６と強く接すること
により本体胴１内流体と水室胴４内流体が摺動部へ漏洩
するのを防止している。(Prior Art) As shown in FIG. 2, the multi-tube heat exchanger has a main body 1,
It is composed of a heat transfer tube 2, a tube plate 3 and a water chamber body 4. The main body cylinder 1 and the water chamber body 4 are separated by a tube sheet 3, and the main body cylinder 1 is inserted through the surface of the heat transfer tube 2 arranged in the main body cylinder 1.
The internal fluid and the fluid in the water chamber body 4 have a structure for heat exchange. In general, the heat transfer tube 2 is often made of a copper-based material from the standpoint of placing importance on heat transfer performance, while the main body barrel is made of an iron-based material in consideration of internal pressure. Further, since the temperature of the fluid inside the heat transfer tube 2 is different from the temperature of the fluid inside the main body cylinder 1, that is, outside the heat transfer tube, a stress is generated in the tube sheet 3 and the heat transfer tube 2 due to the difference in thermal expansion between the heat transfer tube 2 and the main body cylinder 1. Conventionally, in order to reduce this stress, a floating tube sheet may be adopted in which one tube sheet is fixed to the main body and the other tube sheet is slid in the axial direction along the inner surface of the main body. As shown in FIG. 3, in the multi-tube heat exchanger having the floating tube plate, the fixed tube plate 5 is connected to the connecting portion of the main body cylinder 1 of one water chamber cylinder 4, and the floating tube plate 6 is connected to the other. Provided in each section. The outer periphery of the floating tube plate 6 is manufactured so as to be inscribed in the main body cylinder 1 as shown in FIG. 4, and the O-ring is formed in the groove 7 formed in the inner periphery of the main body cylinder 1 and the water chamber cylinder 4. 8 is inserted and the O-ring is in strong contact with the floating tube plate 6 to prevent the fluid in the main body barrel 1 and the fluid in the water chamber barrel 4 from leaking to the sliding portion.
（考案が解決しようとする問題点） しかしながら、本体胴１の内面と遊動管板６の外周の間
には摺動する場合の円滑性を保つうえで一定の間隙があ
るのが普通である。このため、本体胴１内流体及び水室
胴４内流体の圧力がこの間隙部分に作用して流体が外部
へ流れようとする。この流体を溝７に挿入したＯ−リン
グ８を変形させその復元力によってシールするのである
が、溝７及びＯ−リング８の製作交差からＯ−リング８
と遊動管板６の外周の接触圧を計画値通りに設定するこ
とは現状の加工技術では極めて困難である。又、Ｏ−リ
ング８の設定が計画通りにされているか否かを組立後、
確認する方法がないため、実際に本体胴１側と水室胴４
側に流体を導き、圧力を作用させてこの部位からの漏洩
を確認することが必要とされている。一方、Ｏ−リング
８の設定が完全であり、又、漏洩がないことが確認でき
たとしても、使用中にこの部位からの漏洩が検出される
ことがある。Ｏ−リング８は、一般的にゴムを使用し、
溝７の断面積を完全に閉鎖できる直径を有するものを選
定しているが、溝７内での変形の仕方によっては長期間
使用した場合、ゴムの劣化が起こり復元力が弱まってシ
ール機能を維持できなくなることもある。特にこの構造
は油冷却器等の本体胴１側の流体が油で、しかも温度が
高い条件で使用されることが多く、この場合にはゴムの
劣化は更に急激なものとなる。(Problems to be Solved by the Invention) However, there is usually a certain gap between the inner surface of the main body 1 and the outer periphery of the floating tube plate 6 in order to maintain smoothness when sliding. Therefore, the pressures of the fluid in the main body cylinder 1 and the fluid in the water chamber cylinder 4 act on the gap portions, and the fluid tends to flow to the outside. This fluid deforms the O-ring 8 inserted in the groove 7 and seals it by the restoring force.
It is extremely difficult to set the contact pressure on the outer circumference of the floating tube sheet 6 according to the planned value with the current processing technology. Also, after assembling whether the setting of the O-ring 8 is as planned,
Since there is no way to check, the actual body 1 side and the water chamber body 4
It is necessary to direct the fluid to the side and apply pressure to check for leaks from this site. On the other hand, even if it is confirmed that the O-ring 8 is completely set and there is no leakage, leakage from this part may be detected during use. The O-ring 8 generally uses rubber,
We selected a material with a diameter that can completely close the cross-sectional area of the groove 7. However, depending on the deformation inside the groove 7, when used for a long period of time, rubber deteriorates and the restoring force weakens and the sealing function is reduced. It may not be maintained. In particular, this structure is often used under the condition that the fluid on the main body 1 side such as an oil cooler is oil and the temperature is high, and in this case, the deterioration of the rubber becomes more rapid.
又、ゴム自身の劣化に加え遊動管板６が本体胴１と伝熱
管２の熱膨張差により常に運動している。この遊動管板
６運動によりＯ−リング８は接触力を加えられながら移
動することになり、表面の摩耗が著しくなる。摩耗が進
むとＯ−リング８の断面積は計画値と比べて減少し、規
定の接触力を維持することが困難になり、流体の漏洩事
故が発生する。In addition to the deterioration of the rubber itself, the floating tube plate 6 is constantly moving due to the difference in thermal expansion between the main body 1 and the heat transfer tube 2. Due to this motion of the floating tube plate 6, the O-ring 8 moves while being applied with a contact force, and the surface wear becomes remarkable. As the wear progresses, the cross-sectional area of the O-ring 8 decreases as compared with the planned value, and it becomes difficult to maintain the specified contact force, causing a fluid leakage accident.
本考案の目的は長期間の使用においても遊動管板部のシ
ール機能が維持されると共に、外部からの点検修理等が
容易に行えるようにした多管式熱交換器を提供すること
にある。It is an object of the present invention to provide a multi-tube heat exchanger which can maintain the sealing function of the floating tube plate portion even during long-term use and can be easily inspected and repaired from the outside.
（問題点を解決するための手段） 上記目的を達成するために本考案は遊動管板の外側面に
水室胴を水密に結合して遊動管板を水室胴と共に本体胴
のフランジに隣接する内面でしゅう動可能に構成し、さ
らに遊動管板のしゅう動面近傍を密閉域とするように伸
縮自在な継手手段を本体胴のフランジと遊動管板との間
に着脱可能に設けたことを特徴とするものである。(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention is constructed such that a water chamber cylinder is watertightly coupled to an outer surface of a floating tube plate so that the floating tube plate is adjacent to the flange of the main body cylinder together with the water chamber cylinder. The inner surface of the floating tube is slidable, and a flexible joint means is detachably provided between the flange of the body barrel and the floating tube plate so that the vicinity of the sliding surface of the floating tube plate is a closed area. It is characterized by.
（作用） 多管式熱交換器の運転中、本体胴内には加熱流体が導か
れ、一方の水室胴内には被加熱流体が導かれる。被加熱
流体は伝熱管内を流動して他方の水室胴内に導かれる間
に加熱流体によって加熱される。このとき、本体胴と伝
熱管との間には温度差が生じ、また本体胴と伝熱管との
間の熱膨張差により遊動管板が本体胴内面を滑りながら
移動する。(Operation) During the operation of the multi-tube heat exchanger, the heated fluid is introduced into the main body cylinder and the heated fluid is introduced into the one water chamber cylinder. The fluid to be heated is heated by the heating fluid while flowing in the heat transfer tube and being introduced into the other water chamber body. At this time, a temperature difference occurs between the main body cylinder and the heat transfer tube, and the floating tube plate moves while sliding on the inner surface of the main body cylinder due to the difference in thermal expansion between the main body cylinder and the heat transfer tube.
この遊動管板の移動により生じた本体胴との間の変位は
本体胴の縁端と遊動管板の外側面との間に設けた継手手
段に伝えられるが、継手手段が伸縮自在に構成されてい
るためにそこで変位が吸収される。この間、本体胴の内
面と遊動管板の外周との間の隙間から加熱側流体が外に
向かって漏洩するが、継手手段を気密性の高い方法で取
付けておくことにより流体の漏洩が阻止される。The displacement between the body tube and the body tube caused by the movement of the floating tube sheet is transmitted to the joint means provided between the edge of the body tube and the outer surface of the floating tube sheet. Therefore, the displacement is absorbed there. During this time, the heating-side fluid leaks outward from the gap between the inner surface of the body barrel and the outer circumference of the floating tube sheet.However, fluid leakage is prevented by installing the joint means in a highly airtight manner. It
（実施例） 以下、好適な実施例である第１図を参照して本考案をよ
り詳しく説明する。Embodiment Hereinafter, the present invention will be described in more detail with reference to FIG. 1, which is a preferred embodiment.
第１図において、符号11は本体胴を示しており、この本
体胴11の縁端にはフランジ部12が一体に設けられてい
る。また、本体胴11内にはフランジ部12よりも手前に位
置する遊動管板13が軸方向にしゅう動自在に設けられて
いる。この遊動管板13の外側面には水室胴14が溶接によ
り水密に取付けられ、遊動管板13の進退に合わせて動作
するようになっている。In FIG. 1, reference numeral 11 indicates a main body cylinder, and a flange portion 12 is integrally provided at an edge of the main body cylinder 11. In addition, a floating tube plate 13 located in front of the flange portion 12 is provided in the body case 11 so as to be slidable in the axial direction. A water chamber barrel 14 is watertightly attached to the outer surface of the floating tube plate 13 by welding, and operates in accordance with the forward / backward movement of the floating tube plate 13.
一方、遊動管板13の外側に拡がる領域は継手手段、たと
えば軸方向に自在に伸縮するベローズ15によって覆わ
れ、充分な気密性が保たれている。すなわち、本実施例
のベローズ15は一方の端が胴側フランジ16に、他方が管
板側フランジ17にそれぞれ溶接により気密に取付けられ
ている。On the other hand, the region extending outside the floating tube plate 13 is covered with a joint means, for example, a bellows 15 that freely expands and contracts in the axial direction, and sufficient airtightness is maintained. That is, the bellows 15 of this embodiment has one end attached to the body side flange 16 and the other end to the tube sheet side flange 17 by welding in an airtight manner.
なお、符号18は遊動管板13に一端を支持され、他端を図
示しない固定管板に支持された伝熱管を示している。ま
た、符号19，20はシートパッキン、符号21，22は六角ボ
ルトをそれぞれ示している。Reference numeral 18 denotes a heat transfer tube having one end supported by the floating tube plate 13 and the other end supported by a fixed tube plate (not shown). Further, reference numerals 19 and 20 are seat packings, and reference numerals 21 and 22 are hexagon bolts, respectively.
次に、上記構成によるところの作用について説明する。Next, the operation of the above configuration will be described.
加熱側流体が本体胴11内に、一方被加熱側流体が水室胴
14内にそれぞれ導かれると、本体胴11が加熱されて温度
が上昇する。このとき、伝熱管18側では被加熱流体が内
部を流れるために温度上昇は本体胴11と比べて少ない。
この温度上昇の相違と構成材料の相違とにより遊動管板
13は本体胴11の内面を滑りながら移動する。この移動量
は管板側フランジ17を介してベローズ15に伝達される。
ベローズ15はこの移動量に相等する変位を生じるが、薄
板を曲げて製作されたベローズ15自身が変形するために
遊動管板13の移動を拘束することはない。又、遊動管板
13の外周と本体胴11の間隙から漏洩した流体はベローズ
15内に流入するが、胴側フランジ16及び管板側フランジ
17がシートパッキン19，20を介してフランジ部12及び遊
動管板13に押えつけられているために外部へは流出しな
い。The fluid on the heating side is inside the main body 11, while the fluid on the heated side is inside the water chamber
When each is introduced into 14, the main body 11 is heated and the temperature rises. At this time, on the heat transfer tube 18 side, the temperature rise is smaller than that of the main body cylinder 11 because the fluid to be heated flows inside.
Due to the difference in temperature rise and the difference in constituent materials, the floating tube plate
13 moves while sliding on the inner surface of the main body 11. This amount of movement is transmitted to the bellows 15 via the tube plate side flange 17.
Although the bellows 15 causes a displacement equal to this movement amount, the bellows 15 itself manufactured by bending a thin plate does not restrict the movement of the floating tube sheet 13 because the bellows 15 itself deforms. Also, a floating tube plate
The fluid leaked from the gap between the outer circumference of 13 and the body cylinder 11 is a bellows.
It flows into the inside, but the trunk side flange 16 and the tube plate side flange
Since 17 is pressed against the flange portion 12 and the floating tube plate 13 via the sheet packings 19 and 20, it does not flow out to the outside.
上記実施例のベローズ15は強度の大きい金属であるため
にゴム製のＯ−リングと比べて経年的な劣化がなく、遊
動管板13の移動による伸縮が繰り返されても簡単には損
傷が生じない。又、ベローズ15、胴側フランジ16及び管
板側フランジ17が外から見えるところにあるので、シー
ル機能が損なわれる危険性のある箇所の点検、さらには
異常が見つけられた場合の修理等が容易である。Since the bellows 15 of the above-described embodiment is a metal having high strength, it does not deteriorate over time as compared with a rubber O-ring, and is easily damaged even if the floating tube plate 13 repeatedly expands and contracts. Absent. Also, since the bellows 15, the body side flange 16 and the tube plate side flange 17 are visible from the outside, it is easy to inspect locations where there is a risk of impairing the sealing function, and to repair if an abnormality is found. Is.
更に、別の効果として伝熱管18等の交換時に管束を引き
抜く必要が生じた場合、六角ボルト22を取外すことによ
り簡単に管束を引き抜くことができる。Further, as another effect, when it becomes necessary to pull out the tube bundle when replacing the heat transfer tubes 18 and the like, the tube bundle can be easily pulled out by removing the hexagon bolt 22.
又、伸縮量に応じてベローズ15の形状を変えることは容
易であり、使用条件が変更になった場合においてもベロ
ーズ15とこれに付随する胴側フランジ16及び管板側フラ
ンジ17を交換することにより簡単に対応することが可能
である。Moreover, it is easy to change the shape of the bellows 15 according to the amount of expansion and contraction, and even if the usage conditions change, the bellows 15 and the accompanying body side flange 16 and tube plate side flange 17 must be replaced. Can be dealt with easily.
以上の説明から明らかなように、本考案は遊動管板を水
室胴と共に本体胴のフランジに隣接する内面でしゅう動
可能に構成し、この遊動管板のしゅう動面近傍を密閉域
とするように伸縮自在な継手手段を本体胴のフランジと
遊動管板との間に着脱可能に設けているので、長時間に
わたる使用においても遊動管板部での良好なシール機能
が保たれ、加熱流体が被加熱流体中に混入するなどの事
故をなくすことができる。As is apparent from the above description, the present invention is configured such that the floating tube plate can slide together with the water chamber barrel on the inner surface adjacent to the flange of the main body barrel, and the vicinity of the sliding surface of the floating tube plate is a sealed area. Since the expandable joint means is detachably installed between the flange of the body barrel and the floating tube plate, the good sealing function of the floating tube plate is maintained even when used for a long time, and the heating fluid It is possible to eliminate accidents such as that mixed in the fluid to be heated.
しかも、継手手段が着脱可能であるから、外部から点
検、修理等を施すことが容易であり、高温の熱機器の安
全を保持することが可能である。Moreover, since the joint means can be attached and detached, it is easy to carry out inspections and repairs from the outside, and it is possible to maintain the safety of high-temperature heat equipment.
第１図は本考案による多管式熱交換器の要部を示す断面
図、第２図は従来の多管式熱交換器を示す構成図、第３
図は従来の遊動管板を有する多管式熱交換器の一例を示
す構成図、第４図は遊動管板取付部の詳細を示す断面図
である。 11……本体胴、13……遊動管板 14……水室胴、15……ベローズ 16……胴側フランジ、17……管板側フランジ 18……伝熱管、19，20……シートパッキンFIG. 1 is a sectional view showing an essential part of a multitubular heat exchanger according to the present invention, FIG. 2 is a configuration diagram showing a conventional multitubular heat exchanger, and FIG.
FIG. 4 is a configuration diagram showing an example of a conventional multi-tube heat exchanger having a floating tube plate, and FIG. 4 is a sectional view showing details of a floating tube plate mounting portion. 11 …… Main body cylinder, 13 …… Floating tube plate 14 …… Water chamber cylinder, 15 …… Bellows 16 …… Cylinder side flange, 17 …… Tube plate side flange 18 …… Heat transfer tube, 19,20 …… Seat packing
Claims (2)
う動する遊動管板を有する多管式熱交換器において、前
記遊動管板の外側面に水室胴を水密に結合して該遊動管
板を該水室胴と共に前記本体胴のフランジに隣接する内
面でしゅう動可能に構成し、さらに該遊動管板のしゅう
動面近傍を密閉域とするように伸縮自在な継手手段を前
記本体胴のフランジと前記遊動管板との間に着脱可能に
設けたことを特徴とする多管式熱交換器。1. A multi-tube heat exchanger having a floating tube plate that freely slides along the inner surface of a cylindrical main body cylinder, wherein a water chamber cylinder is watertightly coupled to the outer surface of the floating tube plate. The floating tube plate is configured to be slidable on the inner surface adjacent to the flange of the main body cylinder together with the water chamber barrel, and a joint means that is expandable and contractable so that the vicinity of the sliding surface of the floating tube sheet is a sealed area. A multi-tube heat exchanger, which is detachably provided between the flange of the main body barrel and the floating tube plate.
される胴側フランジと、前記遊動管板の外側面に結合さ
れる管板側フランジとの間に装着されるベローズである
ことを特徴とする実用新案登録請求の範囲第１項記載の
多管式熱交換器。2. The bellows, wherein the joint means is mounted between a body side flange connected to a flange portion of the main body body and a tube plate side flange connected to an outer surface of the floating tube plate. A multi-tube heat exchanger according to claim 1, characterized in that the utility model is registered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987000092U JPH0624707Y2 (en) | 1987-01-06 | 1987-01-06 | Multi-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987000092U JPH0624707Y2 (en) | 1987-01-06 | 1987-01-06 | Multi-tube heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63109888U JPS63109888U (en) | 1988-07-15 |
| JPH0624707Y2 true JPH0624707Y2 (en) | 1994-06-29 |
Family
ID=30776767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987000092U Expired - Lifetime JPH0624707Y2 (en) | 1987-01-06 | 1987-01-06 | Multi-tube heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0624707Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE518089C2 (en) | 1999-10-26 | 2002-08-27 | Tetra Laval Holdings & Finance | Device at a tube heat exchanger |
| US9127895B2 (en) | 2006-01-23 | 2015-09-08 | MAHLE Behr GmbH & Co. KG | Heat exchanger |
| WO2007082774A2 (en) * | 2006-01-23 | 2007-07-26 | Behr Gmbh & Co. Kg | Heat exchanger |
| EP2220351A1 (en) * | 2007-11-12 | 2010-08-25 | Behr GmbH & Co. KG | Exhaust gas cooler for a motor vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6218593U (en) * | 1985-07-18 | 1987-02-04 |
-
1987
- 1987-01-06 JP JP1987000092U patent/JPH0624707Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63109888U (en) | 1988-07-15 |
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