JPH06347181A - Radiation-type heat exchanger and operating method therefor - Google Patents
Radiation-type heat exchanger and operating method thereforInfo
- Publication number
- JPH06347181A JPH06347181A JP13443993A JP13443993A JPH06347181A JP H06347181 A JPH06347181 A JP H06347181A JP 13443993 A JP13443993 A JP 13443993A JP 13443993 A JP13443993 A JP 13443993A JP H06347181 A JPH06347181 A JP H06347181A
- Authority
- JP
- Japan
- Prior art keywords
- heat transfer
- shaped
- distributor
- fluid
- shaped heat
- 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
- 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
- F28D7/06—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 having a single U-bend
-
- 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
- F28D7/005—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 for only one medium being tubes having bent portions or being assembled from bent tubes or being tubes having a toroidal configuration
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、汚泥などを焼却する焼
却炉等から発生する高温のダスト含有排ガスの熱交換を
行うのに好適な輻射式熱交換器およびその稼働方法に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiation heat exchanger suitable for exchanging heat of high temperature dust-containing exhaust gas generated from an incinerator for incinerating sludge or the like, and a method of operating the same.
【０００２】[0002]
【従来の技術】従来から、伝熱前の被伝熱流体を分配す
る分配器と、伝熱後の被伝熱流体集合排出する集合器と
を、筒状ケーシングの側壁に互いに近接させて並設し、
一端を前記分配器に接続するとともに、他端を前記分配
器に接続させたＵ字状伝熱管を、前記筒状ケーシングの
長手方向と平行かつ放射状に配設した輻射式熱交換器
は、例えば実公昭６２−１５７８号公報において知られ
ている。2. Description of the Related Art Conventionally, a distributor for distributing a heat transfer fluid before heat transfer and a collector for collecting and discharging the heat transfer fluid after heat transfer are arranged close to each other on a side wall of a cylindrical casing. Set up
A radiant heat exchanger in which a U-shaped heat transfer tube having one end connected to the distributor and the other end connected to the distributor is arranged in parallel with the longitudinal direction of the tubular casing and in a radial shape is, for example, It is known from Japanese Utility Model Publication No. 62-1578.
【０００３】上述した構造のＵ字状伝熱管を使用した輻
射式熱交換器では、その各一端が分配器に、他端が集合
器にそれぞれ接続されたものとして放射状に配置してい
るため、熱交換を効率的に行うことができるとともに、
Ｕ字状伝熱管自身あるいはその一端が接続される分配器
や、他端が接続される集合器の各接続部分が、反復する
熱による膨張や収縮によって、破壊したり変形すること
がないという効果を有している。In the radiant heat exchanger using the U-shaped heat transfer tube having the above-mentioned structure, one end of the radiant heat exchanger is radially connected to the distributor and the other end is connected to the collector. Heat can be exchanged efficiently, and
The effect that the U-shaped heat transfer tube itself or a distributor to which one end thereof is connected and each connecting portion of the collector to which the other end is connected are not broken or deformed by repeated expansion and contraction by heat. have.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、近年に
なって、さらに熱効率を上昇させるとともに、装置自体
の大きさをさらにコンパクトにする要望が高くなってき
た。そのため、特に上述した構造のＵ字状伝熱管を使用
した輻射式熱交換器では、筒状ケーシングの中心部やＵ
字状伝熱管のＵ字内部に空間が存在するため、熱交換効
率の点で最良とはいえず、またコンパクト化も十分でな
い問題があった。ここで、交換熱量を大きくするため、
伝熱面積を広げること、すなわち筒状ケーシング内に設
置するＵ字状伝熱管を数を増すことも考えられるが、上
述した構造の従来の熱交換器では、筒状ケーシングの径
が小さい場合は設置可能なＵ字状伝熱管の数を増加させ
ることはできず、また筒状ケーシングの径が大きい場合
は、設置可能なＵ字状伝熱管の数を増加させることがで
きるが、中心の空洞部が大きくなり熱交換効率の点で不
利となるとともに、コンパクト化を達成できない問題が
あった。However, in recent years, there has been an increasing demand for further increasing the thermal efficiency and further reducing the size of the apparatus itself. Therefore, particularly in the radiant heat exchanger using the U-shaped heat transfer tube having the above-described structure, the central portion of the cylindrical casing and the U
Since there is a space inside the U-shape of the U-shaped heat transfer tube, it cannot be said that it is the best in terms of heat exchange efficiency, and there is also a problem that compactness is not sufficient. Here, in order to increase the heat exchange amount,
It is conceivable to increase the heat transfer area, that is, to increase the number of U-shaped heat transfer tubes installed in the cylindrical casing, but in the conventional heat exchanger having the above-described structure, when the diameter of the cylindrical casing is small, The number of U-shaped heat transfer tubes that can be installed cannot be increased, and when the diameter of the tubular casing is large, the number of U-shaped heat transfer tubes that can be installed can be increased, but the central cavity There is a problem in that the size becomes large, which is disadvantageous in terms of heat exchange efficiency, and compactness cannot be achieved.
【０００５】本発明の目的は上述した課題を解消して、
高い熱交換効率および装置のコンパクト化を達成できる
輻射式熱交換器およびその稼働方法を提供しようとする
ものである。The object of the present invention is to solve the above problems,
An object of the present invention is to provide a radiant heat exchanger and a method of operating the same that can achieve high heat exchange efficiency and compactness of the device.
【０００６】[0006]
【課題を解決するための手段】本発明の輻射式熱交換器
は、伝熱前の被伝熱流体を分配する分配器と、伝熱後の
被伝熱流体集合排出する集合器とを、筒状ケーシングの
側壁に互いに近接させて並設し、一端を前記分配器に接
続するとともに、他端を前記集合器に接続させたＵ字状
伝熱管を、前記筒状ケーシングの長手方向と平行かつ放
射状に配設した輻射式熱交換器において、前記Ｕ字状伝
熱管に重ねて、一端を前記分配器に接続するとともに、
他端を前記集合器に接続させたＵ字状伝熱管を少なくと
も１本設けたことを特徴とするものである。A radiant heat exchanger according to the present invention comprises a distributor for distributing a heat transfer fluid before heat transfer and a collector for collecting and discharging the heat transfer fluid after heat transfer. A U-shaped heat transfer tube, which is arranged in parallel with each other on the side wall of the tubular casing and has one end connected to the distributor and the other end connected to the collector, is parallel to the longitudinal direction of the tubular casing. And in the radiant heat exchanger arranged radially, while overlapping the U-shaped heat transfer tube and connecting one end to the distributor,
At least one U-shaped heat transfer tube having the other end connected to the collector is provided.
【０００７】また、本発明の輻射式熱交換器の稼働方法
は、上記構造の本発明の輻射式熱交換器において、筒状
ケーシング内の側壁に固定された多数本のＵ字状伝熱管
のＵ字側から固定側に向かって伝熱流体を流入させて、
伝熱前の被伝熱流体と伝熱流体とを向流させて熱交換す
ることを特徴とするものである。Further, the operation method of the radiant heat exchanger of the present invention is the radiant heat exchanger of the present invention having the above-mentioned structure, in which a large number of U-shaped heat transfer tubes fixed to the side wall inside the tubular casing. The heat transfer fluid is made to flow from the U-shaped side toward the fixed side,
It is characterized in that the heat-transferred fluid and the heat-transfer fluid before heat transfer are caused to flow countercurrently to exchange heat.
【０００８】[0008]
【作用】上述した構成において、Ｕ字状伝熱管を筒状ケ
ーシングの長手方向に２重またはそれ以上重ねているた
め、従来とほぼ同じスペースでほぼ２倍またはそれ以上
の熱交換量を達成できるとともに、従来と同じ能力の熱
交換器を従来と比較して小さな装置で達成でき、装置の
コンパクト化も達成できる。In the above structure, since the U-shaped heat transfer tubes are doubled or more in the longitudinal direction of the cylindrical casing, the heat exchange amount can be almost doubled or more in the same space as the conventional one. At the same time, a heat exchanger having the same capacity as the conventional one can be achieved with a smaller device than the conventional one, and the device can be made compact.
【０００９】また、本発明の輻射式熱交換器を稼働する
際には、伝熱流体をＵ字状伝熱管のＵ字側から固定側に
流すことにより、Ｕ字状伝熱管と筒状ケーシングの接続
部である分配器および集合器近傍の温度を高温腐食域以
下と低くでき、これらの部分の腐食や亀裂を防止でき
る。そのため、特に伝熱流体が高腐食性のガスである場
合に、その効果が顕著となる。Further, when operating the radiant heat exchanger of the present invention, the heat transfer fluid is caused to flow from the U-shaped side of the U-shaped heat transfer tube to the fixed side, whereby the U-shaped heat transfer tube and the cylindrical casing. The temperature in the vicinity of the distributor and the collector, which is the connection part of, can be lowered to a temperature equal to or lower than the high temperature corrosion region, and corrosion and cracks in these parts can be prevented. Therefore, the effect becomes remarkable especially when the heat transfer fluid is a highly corrosive gas.
【００１０】さらに、筒状ケーシング内のＵ字状伝熱管
の存在しない中心部に筒状の整流管を設けた場合は、伝
熱流体を効果的にＵ字状伝熱管と接触させることがで
き、さらに熱交換効率を向上できるため好ましい。さら
に、Ｕ字状伝熱管の内外面に凹凸を設けた場合は、上記
整流管の場合と同様に熱交換効率を高めることができる
ため好ましい。Further, when the tubular straightening tube is provided in the central portion of the tubular casing where the U-shaped heat transfer tube does not exist, the heat transfer fluid can be effectively brought into contact with the U-shaped heat transfer tube. It is preferable because the heat exchange efficiency can be further improved. Furthermore, it is preferable to provide the U-shaped heat transfer tube with irregularities on the inner and outer surfaces thereof, because the heat exchange efficiency can be increased as in the case of the rectifying tube.
【００１１】[0011]
【実施例】図１は本発明の輻射式熱交換器の一例の構成
を示す図であり、図１（ａ）は部分断面で示す正面図
を、図１（ｂ）は底面図をそれぞれ示している。図１に
示す実施例において、１は筒状ケーシングであり、この
筒状ケーシング１の上部に伝熱流体入口１ａを設けると
ともに、下部には伝熱流体出口１ｂを設けている。ま
た、筒状ケーシング１の上部外周側壁には、被伝熱流体
を供給するための分配器３と伝熱後の被伝熱流体を集合
排出する集合器４とを近接して設けている。２は筒状ケ
ーシング１内にその長手方向と平行かつ放射状に多数配
設されるＵ字状伝熱管で、その一端を分配器３と接続す
るとともに、その他端を集合器４と接続している。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing the structure of an example of a radiation heat exchanger of the present invention, FIG. 1 (a) is a front view showing a partial cross section, and FIG. 1 (b) is a bottom view. ing. In the embodiment shown in FIG. 1, reference numeral 1 is a cylindrical casing, and a heat transfer fluid inlet 1a is provided at an upper portion of the cylindrical casing 1 and a heat transfer fluid outlet 1b is provided at a lower portion thereof. Further, a distributor 3 for supplying the heat-transferred fluid and a collector 4 for collecting and discharging the heat-transferred fluid after heat transfer are provided close to each other on the upper outer peripheral side wall of the cylindrical casing 1. Reference numeral 2 denotes a U-shaped heat transfer tube that is arranged in the cylindrical casing 1 in parallel with the longitudinal direction thereof in a radial pattern, and has one end connected to the distributor 3 and the other end connected to the collector 4. .
【００１２】本実施例の特徴は、筒状ケーシング１内に
多数本放射状に配置された各Ｕ字状伝熱管２を、多重
（本実施例では２重）に重ねて構成した点である。すな
わち、各Ｕ字状伝熱管２の内部空間に、一端を分配器３
に接続するとともに他端を集合器４に接続したＵ字状伝
熱管２を設けている。このように構成することにより、
反復する熱による膨張や収縮に対しても破壊や変形がな
いばかりでなく、装置全体の形状を大きくすることな
く、Ｕ字状伝熱管２の収納数をＵ字状伝熱管２が各１本
の場合と比べて２倍あるいはそれ以上にすることがで
き、高い熱交換量とコンパクト化を達成することができ
る。The feature of the present embodiment is that a large number of U-shaped heat transfer tubes 2 radially arranged in the cylindrical casing 1 are superposed (doubled in this embodiment). That is, one end of the U-shaped heat transfer tube 2 is placed in the inner space of the distributor 3
And a U-shaped heat transfer tube 2 connected to the collector 4 at the other end. By configuring in this way,
Not only does it not break or deform even when repeatedly expanded or contracted by heat, but the number of U-shaped heat transfer tubes 2 stored is one for each U-shaped heat transfer tube 2 without increasing the overall size of the device. It can be doubled or more than in the case of 1, and a high heat exchange amount and compactness can be achieved.
【００１３】上述した本発明の輻射式熱交換器では、伝
熱流体入口１ａからダスト含有排ガス等の高温の伝熱流
体を筒状ケーシング１内に供給して伝熱流体出口１ｂか
ら排出すると同時に、被伝熱流体を分配器３を介してＵ
字状伝熱管２に供給して集合器４から排出することによ
り、Ｕ字状伝熱管２を通過する被伝熱流体を伝熱流体で
加熱でき、加熱された被伝熱流体を集合器４から取り出
すことができる。これにより、高温の伝熱流体と被伝熱
流体との間で熱交換を行っている。In the radiant heat exchanger of the present invention described above, a high temperature heat transfer fluid such as exhaust gas containing dust is supplied from the heat transfer fluid inlet 1a into the cylindrical casing 1 and discharged from the heat transfer fluid outlet 1b. , The heat transfer fluid is passed through the distributor 3 to U
By supplying the heat transfer fluid to the V-shaped heat transfer tube 2 and discharging it from the collector 4, the heat transfer fluid passing through the U-shaped heat transfer tube 2 can be heated by the heat transfer fluid, and the heated heat transfer fluid is collected. Can be taken from. Thereby, heat is exchanged between the high temperature heat transfer fluid and the heat transfer target fluid.
【００１４】図２は本発明の輻射式熱交換器の他の例の
構成を示す図である。図２において、図１に示す部材と
同一の部材には同一の符号を付し、その説明を省略す
る。図２に示す実施例において、図１に示す例と異なる
のは、筒状ケーシング１内のＵ字状伝熱管２の存在しな
い中心部に、筒状の整流管５を設置し、伝熱流体入口１
ａから供給される高温の伝熱流体を、Ｕ字状伝熱管２に
向かって拡散させるよう構成した点である。整流管５の
設置は、筒状ケーシング１内に支持部６を設け、この支
持部６の先端と整流管５の側面に設けた受け部７とを係
合させ、自重で設置して取り外しができるよう構成する
と好ましい。これは、非常に腐食状態の高い雰囲気内に
整流管５を設置するため、腐食した場合でも整流管５を
容易に交換可能な構造とするためである。なお、整流管
５の効果は、筒状ケーシング１の内径が１５００ｍｍ以
上で中心を吹き抜ける伝熱流体の量が多い大型の熱交換
器に使用すると、顕著である。FIG. 2 is a diagram showing the configuration of another example of the radiant heat exchanger of the present invention. 2, the same members as those shown in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted. The embodiment shown in FIG. 2 is different from the embodiment shown in FIG. 1 in that a tubular straightening tube 5 is installed in the central portion of the tubular casing 1 where the U-shaped heat transfer tube 2 does not exist. Entrance 1
The point is that the high temperature heat transfer fluid supplied from a is diffused toward the U-shaped heat transfer tube 2. The rectifying pipe 5 is installed by providing a supporting portion 6 in the tubular casing 1, engaging the tip of the supporting portion 6 with a receiving portion 7 provided on the side surface of the rectifying pipe 5, and installing the rectifying pipe 5 by its own weight to remove the rectifying pipe 5. It is preferable to configure so that it is possible. This is because the rectifying pipe 5 is installed in an atmosphere having a very high corrosive state, so that the rectifying pipe 5 can be easily replaced even if it is corroded. The effect of the rectifying tube 5 is remarkable when used in a large heat exchanger in which the inner diameter of the cylindrical casing 1 is 1500 mm or more and the amount of heat transfer fluid that blows through the center is large.
【００１５】このように構成した図２に示す実施例で
は、図１に示す例と比べて、伝熱流体がＵ字状伝熱管２
により多く接触するため、熱交換効率を高くすることが
できる。また、本発明において、熱交換器の稼働時の伝
熱流体を流す方向については特に限定するものでない
が、図２に示すようにＵ字状伝熱管２のＵ字側から固定
側に向かって伝熱流体を流入した方が、図１に示す例の
ようにＵ字状伝熱管２の固定側からＵ字側に向かって伝
熱流体を流入した場合と比べて、腐食を防止できるため
好ましい。これは、Ｕ字状伝熱管２と筒状ケーシング１
の接続部である分配器３および集合器４近傍に６００℃
程度の高温の伝熱流体が最初に接触せず、これらの部分
の温度を高温腐食の少ない領域の５００℃以下と低くで
きるため、これらの部分の腐食やそれによる亀裂を防止
できるためである。In the embodiment shown in FIG. 2 configured as described above, the heat transfer fluid is U-shaped heat transfer tube 2 as compared with the example shown in FIG.
Since more contact occurs, heat exchange efficiency can be increased. Further, in the present invention, the direction in which the heat transfer fluid flows when the heat exchanger is in operation is not particularly limited, but as shown in FIG. 2, from the U-shaped side of the U-shaped heat transfer tube 2 toward the fixed side. Inflow of the heat transfer fluid is preferable because it can prevent corrosion as compared with the case where the heat transfer fluid flows in from the fixed side of the U-shaped heat transfer tube 2 toward the U-shaped side as in the example shown in FIG. . This is a U-shaped heat transfer tube 2 and a tubular casing 1.
600 ° C near the distributor 3 and the collector 4 which are the connection parts of
This is because a heat transfer fluid having a relatively high temperature does not come into contact first and the temperature of these portions can be lowered to 500 ° C. or less in a region where there is little high temperature corrosion, so that corrosion of these portions and cracks due to them can be prevented.
【００１６】上述した図１および図２に示した実施例に
おいて、使用するＵ字状伝熱管２については、熱交換器
の仕様等に応じて変わるため形状等を特に限定するもの
でないが、口径４０ｍｍ程度、肉厚３ｍｍ程度のステン
レスチューブを使用すると好ましい。肉厚については、
薄いほど内部に熱が良く伝わるが腐食した場合に穴があ
きやすいため、腐食代および伝熱率等を考慮して３ｍｍ
程度が好ましい。In the embodiment shown in FIGS. 1 and 2 described above, the U-shaped heat transfer tube 2 to be used is not particularly limited in shape and the like because it changes depending on the specifications of the heat exchanger, etc. It is preferable to use a stainless tube having a thickness of about 40 mm and a thickness of about 3 mm. For wall thickness,
The thinner the heat, the better the heat is transferred to the inside, but holes are likely to be created when corroded. Considering the corrosion allowance and heat transfer rate, etc., 3 mm
A degree is preferable.
【００１７】さらに、Ｕ字状伝熱管２を多重に重ねた場
合のＵ字状伝熱管２間のクリアランスについては、クリ
アランスが大きければ伝熱流体は通りやすくなるが熱交
換効率は悪化し、クリアランスが小さければ熱により膨
張した場合Ｕ字状伝熱管２同志が接してしまうため、こ
れらのバランスを考えると６〜１０ｍｍ程度にすると好
ましい。さらにまた、図３に示すように、Ｕ字状伝熱管
２の内外表面に凹凸８を設けると、管壁面の流体剥離作
用等により高い熱交換効率を達成できるため好ましい。
この場合は、凹凸８を設けない場合と比べて、Ｕ字状伝
熱管２の全長を短くすることができ、それにより熱交換
器の大きさをコンパクトにすることもできる。Further, regarding the clearance between the U-shaped heat transfer tubes 2 when the U-shaped heat transfer tubes 2 are superposed, if the clearance is large, the heat transfer fluid can easily pass through but the heat exchange efficiency is deteriorated and the clearance is increased. If it is small, the U-shaped heat transfer tubes 2 come into contact with each other when expanded by heat. Therefore, considering these balances, it is preferable to set it to about 6 to 10 mm. Furthermore, as shown in FIG. 3, it is preferable to provide unevenness 8 on the inner and outer surfaces of the U-shaped heat transfer tube 2 because high heat exchange efficiency can be achieved due to the fluid separating action of the tube wall surface.
In this case, the total length of the U-shaped heat transfer tube 2 can be shortened as compared with the case where the unevenness 8 is not provided, and thereby the size of the heat exchanger can be made compact.
【００１８】また、上述した図２に示す例で使用する整
流管５についても、熱交換器の仕様などに応じて変わる
ため、その材質、形状等を特に限定するものではない
が、肉厚４〜６ｍｍ程度の中空円筒形状でステンレス鋼
からなると好ましい。中実のものでは、重量が増加して
整流管５の取り外しが容易でなくなるとともに、材料費
が高くなるため、中空形状のものが好ましい。板厚につ
いては、製品の加工性、腐食代、重量等を考慮して４〜
６ｍｍ程度にすることが好ましい。The rectifying tube 5 used in the above-mentioned example shown in FIG. 2 also varies depending on the specifications of the heat exchanger, and therefore its material, shape, etc. are not particularly limited, but the wall thickness 4 It is preferable that the hollow cylindrical shape is about 6 mm and is made of stainless steel. The solid shape is preferable because the weight is increased and the rectifying tube 5 is not easily removed and the material cost is increased. About the plate thickness, considering the workability of the product, corrosion allowance, weight, etc.
It is preferably about 6 mm.
【００１９】さらに、整流管５の形状は、伝熱流体の流
れ方向に対し先端が突出した突出部９を有する形状であ
ると好ましく、図２に示すように両先端が突出したもの
でも、図４に示すように伝熱流体の流れ方向のみ突出し
たものでも良い。ただし、図２に示すように両先端を塞
いだ形状では、内部気体を抜くための空気穴を側面に設
けた方が好ましく、また図４に示すように一端にのみ突
出部９がある場合は、突出部９のない側は開口とすると
好ましい。さらにまた、突出部９の突出端の角度は４５
度以下が好ましい。Further, it is preferable that the rectifying tube 5 has a shape having a projecting portion 9 whose tip projects in the flow direction of the heat transfer fluid. Even if the both tips project as shown in FIG. As shown in FIG. 4, the heat transfer fluid may be projected only in the flow direction. However, as shown in FIG. 2, in the shape in which both ends are closed, it is preferable to provide an air hole for venting the internal gas on the side surface, and as shown in FIG. It is preferable that the side without the protrusion 9 is an opening. Furthermore, the angle of the protruding end of the protruding portion 9 is 45
A degree of less than or equal to is preferable.
【００２０】整流管５の取付位置も、伝熱流体を均一に
Ｕ字状伝熱管２側へ拡散させるため、Ｕ字状伝熱管２の
中央部で、しかも筒状ケーシング１の同心円上が好まし
い。また、整流管５の筒状ケーシング１の長手方向の取
付位置は、突出部９以外の整流管５の上部とＵ字状伝熱
管２の上面とが一致するとともに、整流管５の下部とＵ
字状伝熱管２の下面とが一致すると、Ｕ字状伝熱管２の
全長にわたって伝熱流体を整流できるため好ましい。実
際には、伝熱流体側の圧力損失等を考慮した大きさとす
ると好ましい。As for the mounting position of the rectifying tube 5, the heat transfer fluid is evenly diffused to the U-shaped heat transfer tube 2 side, so that it is preferable that it is at the center of the U-shaped heat transfer tube 2 and on the concentric circle of the cylindrical casing 1. . Further, at the mounting position of the straightening tube 5 in the longitudinal direction of the tubular casing 1, the upper portion of the straightening tube 5 other than the projecting portion 9 and the upper surface of the U-shaped heat transfer tube 2 coincide with each other, and the lower portion of the straightening tube 5 and the U
It is preferable that the lower surface of the U-shaped heat transfer tube 2 is aligned, because the heat transfer fluid can be rectified over the entire length of the U-shaped heat transfer tube 2. In practice, it is preferable to set the size in consideration of the pressure loss on the heat transfer fluid side.
【００２１】[0021]
【発明の効果】以上の説明から明かなように、本発明に
よれば、Ｕ字状伝熱管を筒状ケーシングの長手方向に２
重またはそれ以上重ねているため、従来とほぼ同じスペ
ースでほぼ２倍またはそれ以上の熱交換量を達成できる
とともに、従来と同じ能力の熱交換器を従来と比較して
小さな装置で達成でき、装置のコンパクト化も達成でき
る。As is apparent from the above description, according to the present invention, the U-shaped heat transfer tube is arranged in the longitudinal direction of the tubular casing.
Since they are stacked one on top of the other, they can achieve almost double or more heat exchange in the same space as before, and a heat exchanger of the same capacity as before can be achieved with a smaller device than before. A compact device can also be achieved.
【００２２】また、本発明の輻射式熱交換器を稼働する
際には、伝熱流体をＵ字状伝熱管のＵ字側から固定側に
流すことにより、Ｕ字状伝熱管と筒状ケーシングの接続
部である分配器および集合器近傍の温度を高温腐食域以
下と低くでき、これらの部分の腐食や亀裂を防止でき
る。そのため、特に伝熱流体が高腐食性のガスである場
合に、その効果が顕著となる。Further, when operating the radiant heat exchanger of the present invention, the heat transfer fluid is caused to flow from the U-shaped side of the U-shaped heat transfer tube to the fixed side, whereby the U-shaped heat transfer tube and the tubular casing. The temperature in the vicinity of the distributor and the collector, which is the connection part of, can be lowered to a temperature equal to or lower than the high temperature corrosion region, and corrosion and cracks in these parts can be prevented. Therefore, the effect becomes remarkable especially when the heat transfer fluid is a highly corrosive gas.
【図１】本発明の輻射式熱交換器の一例の構成を示す図
である。FIG. 1 is a diagram showing a configuration of an example of a radiant heat exchanger of the present invention.
【図２】本発明の輻射式熱交換器の他の例の構成を示す
図である。FIG. 2 is a diagram showing the configuration of another example of the radiant heat exchanger of the present invention.
【図３】本発明で使用するＵ字状伝熱管の他の例の構成
を示す図である。FIG. 3 is a diagram showing the configuration of another example of the U-shaped heat transfer tube used in the present invention.
【図４】本発明で使用する整流管の形状の一例を説明す
るための図である。FIG. 4 is a diagram for explaining an example of the shape of a rectifying tube used in the present invention.
１ 筒状ケーシング ２ Ｕ字状伝熱管 ３ 分配器 ４ 集合器 ５ 整流管 ６ 支持部 ７ 受け部 ８ 溝 ９ 突出部 DESCRIPTION OF SYMBOLS 1 Cylindrical casing 2 U-shaped heat transfer tube 3 Distributor 4 Aggregator 5 Rectifying tube 6 Support part 7 Receiving part 8 Groove 9 Projecting part
Claims (3)
と、伝熱後の被伝熱流体集合排出する集合器とを、筒状
ケーシングの側壁に互いに近接させて並設し、一端を前
記分配器に接続するとともに、他端を前記集合器に接続
させたＵ字状伝熱管を、前記筒状ケーシングの長手方向
と平行かつ放射状に配設した輻射式熱交換器において、
前記Ｕ字状伝熱管に重ねて、一端を前記分配器に接続す
るとともに、他端を前記集合器に接続させたＵ字状伝熱
管を少なくとも１本設けたことを特徴とする輻射式熱交
換器。1. A distributor for distributing the heat-transferred fluid before heat transfer and a collector for collecting and discharging the heat-transferred fluid after heat transfer are arranged side by side close to each other on a side wall of a cylindrical casing, A radiant heat exchanger in which a U-shaped heat transfer tube having one end connected to the distributor and the other end connected to the collector is arranged radially in parallel with the longitudinal direction of the tubular casing,
Radiant heat exchange, characterized in that at least one U-shaped heat transfer tube is provided which is superposed on the U-shaped heat transfer tube and has one end connected to the distributor and the other end connected to the collector. vessel.
と、伝熱後の被伝熱流体集合排出する集合器とを、筒状
ケーシングの側壁に互いに近接させて並設し、一端を前
記分配器に接続するとともに、他端を前記集合器に接続
させたＵ字状伝熱管を、前記筒状ケーシングの長手方向
と平行かつ放射状に配設した輻射式熱交換器において、
前記筒状ケーシング内の前記Ｕ字状伝熱管の存在しない
中心部に、側壁に固定された多数本のＵ字状伝熱管に向
かって伝熱流体を拡散する筒状の整流管を配設したこと
を特徴とする輻射式熱交換器。2. A distributor for distributing the heat-transferred fluid before heat transfer and a collector for collecting and discharging the heat-transferred fluid after heat transfer are arranged side by side close to each other on the side wall of the tubular casing, A radiant heat exchanger in which a U-shaped heat transfer tube having one end connected to the distributor and the other end connected to the collector is arranged radially in parallel with the longitudinal direction of the tubular casing,
In the central portion of the tubular casing where the U-shaped heat transfer tubes do not exist, a tubular straightening tube for diffusing the heat transfer fluid toward a large number of U-shaped heat transfer tubes fixed to the side wall is provided. A radiant heat exchanger characterized in that
交換器において、筒状ケーシング内の側壁に固定された
多数本のＵ字状伝熱管のＵ字側から固定側に向かって伝
熱流体を流入させて、伝熱前の被伝熱流体と伝熱流体と
を向流させて熱交換することを特徴とする輻射式熱交換
器の稼働方法。3. The radiant heat exchanger according to claim 1 or 2, wherein a large number of U-shaped heat transfer tubes fixed to the side wall in the tubular casing are transferred from the U-shaped side to the fixed side. A method for operating a radiant heat exchanger, characterized in that a heat fluid is flown in and the heat transfer fluid before heat transfer and the heat transfer fluid are counter-currently exchanged with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13443993A JPH06347181A (en) | 1993-06-04 | 1993-06-04 | Radiation-type heat exchanger and operating method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13443993A JPH06347181A (en) | 1993-06-04 | 1993-06-04 | Radiation-type heat exchanger and operating method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06347181A true JPH06347181A (en) | 1994-12-20 |
Family
ID=15128391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13443993A Pending JPH06347181A (en) | 1993-06-04 | 1993-06-04 | Radiation-type heat exchanger and operating method therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06347181A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014167382A (en) * | 2013-01-31 | 2014-09-11 | Metawater Co Ltd | Waste treatment facility |
| CN116558328A (en) * | 2023-07-10 | 2023-08-08 | 中国核动力研究设计院 | Microchannel heat exchanger and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS621578U (en) * | 1985-06-20 | 1987-01-07 | ||
| JPS62162802A (en) * | 1986-01-13 | 1987-07-18 | 三菱重工業株式会社 | Steam generator |
-
1993
- 1993-06-04 JP JP13443993A patent/JPH06347181A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS621578U (en) * | 1985-06-20 | 1987-01-07 | ||
| JPS62162802A (en) * | 1986-01-13 | 1987-07-18 | 三菱重工業株式会社 | Steam generator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014167382A (en) * | 2013-01-31 | 2014-09-11 | Metawater Co Ltd | Waste treatment facility |
| CN116558328A (en) * | 2023-07-10 | 2023-08-08 | 中国核动力研究设计院 | Microchannel heat exchanger and manufacturing method thereof |
| CN116558328B (en) * | 2023-07-10 | 2023-09-01 | 中国核动力研究设计院 | Microchannel heat exchanger and manufacturing method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
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