JPS6193388A - Downflow type thin film vaporizer - Google Patents
Downflow type thin film vaporizerInfo
- Publication number
- JPS6193388A JPS6193388A JP21436184A JP21436184A JPS6193388A JP S6193388 A JPS6193388 A JP S6193388A JP 21436184 A JP21436184 A JP 21436184A JP 21436184 A JP21436184 A JP 21436184A JP S6193388 A JPS6193388 A JP S6193388A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- heat transmission
- transmission pipes
- cleaning
- plate
- 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
- F28D3/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits
- F28D3/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits with tubular conduits
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
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、流下薄膜蒸発器の改良に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to improvements in falling film evaporators.
省エネ排熱利用機器である蒸気再生設備は、一般に軟水
循環式シェルアンドチューブ方式が多用されているが、
伝熱管内を満水で流すため、熱交換量の割には循環流量
が大きくなり、ポンプや配管等が大型化し、高価なもの
となっている。Steam regeneration equipment, which is an energy-saving waste heat utilization device, generally uses a shell-and-tube system with soft water circulation.
Since the inside of the heat transfer tube is filled with water, the circulation flow rate is large compared to the amount of heat exchanged, making the pumps, piping, etc. large and expensive.
その解決案の１つとして、コストダウンのため、第２図
に示すような伝熱管内を薄い水膜として流下させる方式
のものが開発された。第２図において、（ａ）は装置全
体の概略図、（ｂ）は伝熱管上部斜視図、（Ｃ）は同縦
断面図である。また、図中の各符号は、次の通りである
。As one solution to this problem, a system was developed in which a thin film of water flows down inside the heat transfer tube, as shown in Figure 2, in order to reduce costs. In FIG. 2, (a) is a schematic diagram of the entire apparatus, (b) is a perspective view of the upper part of the heat exchanger tube, and (C) is a longitudinal cross-sectional view of the same. Further, each symbol in the figure is as follows.
２１：蒸発器シェル、２２：管板、 ２６：伝熱管、
２４：邪摩板、２５：二次側配管、２６；ポンプ、２７
：熱水、２８：蒸気配管、２９：タービン、３０：多孔
板
細管内に均一な水展ヲ形成するためには、各管への流量
分配が一様なことと、分配された量が管内で一様な水膜
を形成することの２点が満足されなければならない。し
かしながら、問題点として、工作上細管を取付けろ管板
面が３咽程度のひずみ誤差を持つ場合があり、又据付上
からも、本体の鉛直度の関係から管板のレベル誤差を生
じ、第２図に示す伝熱管上端に■ノンｆを設けた方式で
は、管上端面のレベル差のため各管への流量分配がバラ
ツキ、一様な水膜がＪし成されない場合があった。また
、第２図のものでレエ、上部に多孔板があるため、管板
面の清掃にも５１Ｃ点があった。21: Evaporator shell, 22: Tube plate, 26: Heat exchanger tube,
24: Jam plate, 25: Secondary piping, 26; Pump, 27
: Hot water, 28: Steam piping, 29: Turbine, 30: Perforated plate In order to form a uniform water distribution in the thin tube, it is necessary that the flow rate distribution to each tube is uniform and that the distributed amount is within the tube. Two points must be satisfied: formation of a uniform water film. However, the problem is that the tube plate surface on which the thin tube is attached may have a distortion error of about 3 degrees due to the manufacturing process, and the level error of the tube plate may occur due to the verticality of the main body during installation. In the method shown in Fig. 2 in which a non-f is provided at the upper end of the heat transfer tube, the flow rate distribution to each tube varies due to the difference in the level of the upper end surface of the tube, and a uniform water film may not be formed. In addition, since the one in Figure 2 has a perforated plate on the upper part, there was a point 51C when cleaning the tube plate surface.
〔元■夕ＪがＩＷ決しようとする問題点〕本冗四の目的
Ｃよ、流下薄膜蒸発器のコストダウンと性能向上のため
、各伝熱管に均寺に流量２分配し、一様な水膜２作る手
法の確立にある。[Problems that Yuan J is trying to resolve in IW] Purpose C of this report is to reduce the cost and improve the performance of the falling film evaporator by distributing two flow rates to each heat exchanger tube and uniformly distributing it. The aim is to establish a method for creating water film 2.
〔間：川魚ｋ ＦＪ’ｌ−決づ−るための手段〕本発明
は、熱水を伝熱管内を薄い水ｊ模として流下させるηＬ
下薄膜蒸発器に−１６いて、蒸発器外周乞構成するシェ
ル上部に熱水流入動圧低減用の衝突板を設け、伝熱管上
端に設けたノズルチップの伝熱管挿入部の形状乞テーパ
状とし、さらに該ノズルチップの上端部に伝熱管清掃用
栓を設けたことｔ特徴とする流下薄膜蒸発器に関する。[Meaning: Means for determining river fish k FJ'l-] The present invention is a method for making hot water flow down inside a heat transfer tube as a thin water imitation.
In the lower thin film evaporator, a collision plate for reducing the dynamic pressure of hot water inflow is provided on the upper part of the shell that forms the outer periphery of the evaporator, and the shape of the heat exchanger tube insertion part of the nozzle tip provided at the upper end of the heat exchanger tube is tapered. The present invention further relates to a falling thin film evaporator characterized in that a heat exchanger tube cleaning plug is provided at the upper end of the nozzle tip.
すなわち、本発明装置は、熱水入口に容器に比べ充分小
さい衝突板を設け、管束部水面への衝撃圧を低減させ、
細管への流入量を一様化するとともに、細管上部に適正
な流量を対向壁へ衝突させるような、脱着可能な、清掃
用栓付テーパ状ノズルチップを設けたことを特徴とする
。That is, the device of the present invention provides a collision plate sufficiently smaller than the container at the hot water inlet to reduce the impact pressure on the water surface of the tube bundle.
It is characterized by a removable tapered nozzle tip with a cleaning stopper provided at the top of the capillary to make the flow rate into the capillary uniform and to allow an appropriate flow rate to impinge on the opposing wall.
以下に、本発明装置２第１図に基づき説明する。第１図
におい℃、（ａ）は装置全体の概略図、（ｂ）は伝熱管
上部斜視図、（Ｃ）は同縦断面図である。The present invention apparatus 2 will be explained below based on FIG. 1. 1A is a schematic diagram of the entire apparatus, FIG. 1B is a perspective view of the upper part of the heat exchanger tube, and FIG. 1C is a longitudinal cross-sectional view of the same.
また、図中の各符号は・、次の通りである。Further, each symbol in the figure is as follows.
１：蒸発器シェル、２：管板、′５：伝熱管、４：邪厚
板、５：二次側配管、６：ポンプ、７：熱水、８：蒸気
配管、９：タービン、１０：衝突板、１１：ノズルチッ
プ、１１ａ＝ノズルチップ開口部、１２：清掃用栓
蒸発器シェル１は、本装置の外周を構成し、熱水７は、
最下部より二次側配管５、ポンプ６を経℃蒸発器シェル
１上部の衝突板１０で動圧を低減されて、蒸発器シェル
１内に流入し、管板２と邪摩板４に支えられた伝熱管３
内暑流下する。伝熱管３は、その上端の水没する部分に
ノズルチップ１１が管内径に挿入され、開口部１１ａよ
り熱水が伝熱管５内に流入し、壁面に衝突し、薄膜を形
成流下する。開口部１１ａは、第１図では、１ケ所で真
横に開口されているが、戊数個でも良く、又、角度を設
けても良い。熱水７の一部は蒸発し、蒸気配管８を経て
タービン９へ至る。ノズルチップ１１の伝熱管３への挿
入部は、テーパ状になっており、テーパ都最大径は、伝
熱管３の内径よりやや大きくしである。又、ノズルチッ
プ１１の上端には、伝熱管３内の清掃用として栓１２が
設けである。1: Evaporator shell, 2: Tube plate, '5: Heat transfer tube, 4: Thick plate, 5: Secondary piping, 6: Pump, 7: Hot water, 8: Steam piping, 9: Turbine, 10: Collision plate, 11: Nozzle tip, 11a = nozzle tip opening, 12: Cleaning plug The evaporator shell 1 constitutes the outer periphery of the device, and the hot water 7 is
Dynamic pressure is reduced by the collision plate 10 on the upper part of the evaporator shell 1 of the secondary pipe 5 and the pump 6 from the bottom, and the fluid flows into the evaporator shell 1 and is supported by the tube plate 2 and the jam plate 4. Heat exchanger tube 3
The internal heat is flowing down. A nozzle tip 11 is inserted into the inner diameter of the upper end of the heat exchanger tube 3 to be submerged in water, and hot water flows into the heat exchanger tube 5 through the opening 11a, collides with the wall surface, and flows down forming a thin film. In FIG. 1, the opening 11a is opened at one location right sideways, but there may be several openings, or the opening 11a may be provided at an angle. A portion of the hot water 7 evaporates and reaches the turbine 9 via the steam pipe 8. The insertion portion of the nozzle tip 11 into the heat exchanger tube 3 is tapered, and the maximum diameter of the taper is slightly larger than the inner diameter of the heat exchanger tube 3. Further, a plug 12 is provided at the upper end of the nozzle tip 11 for cleaning the inside of the heat transfer tube 3.
（１）蒸発器シェル１上部に設けられた衝突板１０によ
り、ノズルテンプ１１の水没面への熱水７による流入動
圧が低減され、水没面のレベルの均等化により伝熱管６
内への流入を一様化させる。(1) The collision plate 10 provided on the upper part of the evaporator shell 1 reduces the inflow dynamic pressure caused by the hot water 7 to the submerged surface of the nozzle balance 11, and equalizes the level of the submerged surface, thereby reducing the heat transfer tube 6
Uniforms the inflow into the interior.
（２） ノズルテップ１１の挿入部をテーパ状にする
ことにより、伝熱管３の内径の寸法誤差による装着面で
のり−プが防止でき、伝熱管３への流入を一様化させる
。(2) By making the insertion part of the nozzle tip 11 tapered, it is possible to prevent the fitting surface from sagging due to a dimensional error in the inner diameter of the heat exchanger tube 3, and to make the flow into the heat exchanger tube 3 uniform.
（勾 衝突板１０の小型化及びノズルチップ１１に設け
た清掃用栓１２により、管板２面及び伝熱１＃３内の清
掃が容易に行なえる。(By reducing the size of the collision plate 10 and the cleaning plug 12 provided on the nozzle tip 11, cleaning of the tube plate 2 surface and the inside of the heat transfer 1#3 can be easily performed.
（４） ノズルチップ１１の挿入部をテーパ状にする
こと罠より、伝熱管１１内径の寸法誤差に関係なく固（
装着できる。(4) By making the insertion part of the nozzle tip 11 tapered, it can be made rigid (
Can be installed.
第１図は、本発明の流下薄膜蒸発器の概ｊＡｉ乞示し、
第２図は、従来のものの概要を示す。それぞれの図にお
いて、（ａ）は装置全体の概略図、（ｂ）は伝熱管上部
斜視図、（Ｃ）は同縦断面図である。
復代理人 内 １） 明
復代理人 萩 原 亮 −FIG. 1 schematically shows the falling film evaporator of the present invention,
FIG. 2 shows an outline of the conventional one. In each figure, (a) is a schematic diagram of the entire device, (b) is a perspective view of the upper part of the heat exchanger tube, and (C) is a longitudinal cross-sectional view of the same. Sub-agents 1) Meifuku agent Ryo Hagiwara -
Claims (1)
発器において、蒸発器外周を構成するシェル上部に熱水
流入動圧低減用の衝突板を設け、伝熱管上端に設けたノ
ズルチップの伝熱管挿入部の形状をテーパ状とし、さら
に該ノズルチップの上端部に伝熱管清掃用栓を設けたこ
とを特徴とする流下薄膜蒸発器。In a falling film evaporator that allows hot water to flow down as a thin water film inside a heat transfer tube, a collision plate is installed at the top of the shell that forms the outer periphery of the evaporator to reduce the inflow dynamic pressure of the hot water, and a nozzle tip installed at the top end of the heat transfer tube. A falling thin film evaporator characterized in that the heat exchanger tube insertion portion has a tapered shape, and a heat exchanger tube cleaning plug is provided at the upper end of the nozzle tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21436184A JPS6193388A (en) | 1984-10-15 | 1984-10-15 | Downflow type thin film vaporizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21436184A JPS6193388A (en) | 1984-10-15 | 1984-10-15 | Downflow type thin film vaporizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6193388A true JPS6193388A (en) | 1986-05-12 |
Family
ID=16654510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21436184A Pending JPS6193388A (en) | 1984-10-15 | 1984-10-15 | Downflow type thin film vaporizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6193388A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019041557A (en) * | 2017-08-29 | 2019-03-14 | 東芝三菱電機産業システム株式会社 | Cooling pipe protective structure and totally enclosed fan cooled type rotary electric machine |
-
1984
- 1984-10-15 JP JP21436184A patent/JPS6193388A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019041557A (en) * | 2017-08-29 | 2019-03-14 | 東芝三菱電機産業システム株式会社 | Cooling pipe protective structure and totally enclosed fan cooled type rotary electric machine |
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