JP3282005B2 - Steam heating device - Google Patents
Steam heating deviceInfo
- Publication number
- JP3282005B2 JP3282005B2 JP33394094A JP33394094A JP3282005B2 JP 3282005 B2 JP3282005 B2 JP 3282005B2 JP 33394094 A JP33394094 A JP 33394094A JP 33394094 A JP33394094 A JP 33394094A JP 3282005 B2 JP3282005 B2 JP 3282005B2
- Authority
- JP
- Japan
- Prior art keywords
- condensate
- heating
- steam
- heat exchanger
- section
- 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 - Fee Related
Links
Landscapes
- Physical Or Chemical Processes And Apparatus (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は熱交換器内の被加熱物を
蒸気で加熱するものに関し、特にその加熱温度が１００
度Ｃ程度の比較的低温の場合に適した蒸気加熱装置に関
する。具体的には重合反応等に用いられる各種反応釜や
食品の蒸溜装置、濃縮装置、あるいは殺菌装置等の蒸気
加熱に用いるものである。これらの場合の被加熱物は、
少しの温度上昇によって熱損傷を生じてしまう場合が多
く、加熱温度を精度良く維持する必要がある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for heating an object to be heated in a heat exchanger with steam.
The present invention relates to a steam heating device suitable for a relatively low temperature of about C. Specifically, it is used for steam heating of various reaction vessels used for a polymerization reaction or the like, a distilling apparatus, a concentrating apparatus, or a sterilizing apparatus for food. The heated object in these cases is
In many cases, a slight temperature rise causes thermal damage, and it is necessary to accurately maintain the heating temperature.
【０００２】[0002]
【従来の技術】従来の蒸気加熱装置は例えば図２に示す
ようなものが用いられていた。これは、熱交換器１を加
熱するもので、熱交換器１に加熱用の蒸気供給管２を接
続すると共に、加熱により生じた復水を排出する立下げ
部３とスチ―ムトラップ４とで復水排出装置５を構成し
たもので、蒸気供給管２から比較的低圧力すなわち低温
度の蒸気を熱交換器１へ供給することにより、熱交換器
１内の被加熱物を加熱するものである。熱交換器１内へ
供給された蒸気が加熱により凝縮して熱交換器１内を大
気圧以下程度の低圧力状態に維持することにより、１０
０度Ｃあるいは１００度Ｃ以下の比較的低温度で蒸気加
熱することができるものである。2. Description of the Related Art A conventional steam heating apparatus, for example, as shown in FIG. 2 has been used. This is for heating the heat exchanger 1, connecting a steam supply pipe 2 for heating to the heat exchanger 1, and using a falling part 3 for discharging condensate generated by heating and a steam trap 4. The condensate discharge device 5 is configured to supply a relatively low-pressure, that is, low-temperature steam from the steam supply pipe 2 to the heat exchanger 1, thereby heating an object to be heated in the heat exchanger 1. is there. The steam supplied into the heat exchanger 1 is condensed by heating, and the inside of the heat exchanger 1 is maintained at a low pressure of about atmospheric pressure or less.
Steam heating can be performed at a relatively low temperature of 0 ° C. or 100 ° C. or less.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の蒸気加熱装
置では、加熱用の蒸気に混入している不凝縮ガス例えば
空気等を熱交換器内から排除することができずに、加熱
温度ムラを生じて加熱温度を精度良く維持することがで
きない問題があった。In the above-mentioned conventional steam heating apparatus, non-condensable gas such as air mixed in the heating steam cannot be removed from the heat exchanger, so that unevenness in the heating temperature is reduced. There was a problem that the heating temperature could not be accurately maintained.
【０００４】加熱用の蒸気は少なからず幾らかの空気を
混入しているのであるが、上記従来の蒸気加熱装置で
は、復水排出装置５を立下げ部３とスチ―ムトラップ４
とで構成しているために、復水は立下げ部３に溜った水
頭圧によりスチ―ムトラップ４を通過して排出されるの
であるが、空気等の不凝縮ガスは立下げ部３に溜ること
がなく器外へ排除されないのである。The steam for heating contains some air, but in the above-mentioned conventional steam heating device, the condensate discharge device 5 is connected to the falling part 3 and the steam trap 4.
The condensed water is discharged through the steam trap 4 due to the head pressure accumulated in the falling section 3, but non-condensable gas such as air is accumulated in the falling section 3. It is not eliminated outside the vessel.
【０００５】従って本発明の技術的課題は、熱交換器内
に混入した空気等の不凝縮ガスを排除することができ、
加熱温度を精度良く維持することのできる蒸気加熱装置
を提供することである。Accordingly, a technical object of the present invention is to eliminate non-condensable gas such as air mixed in a heat exchanger,
An object of the present invention is to provide a steam heating device capable of accurately maintaining a heating temperature.
【０００６】[0006]
【課題を解決するための手段】上記の技術的課題を解決
するために講じた本発明の技術的手段は、熱交換器に加
熱部を形成して加熱用の蒸気供給管を接続すると共に、
加熱により生じた復水を排出する復水排出装置を接続し
たものにおいて、復水排出装置に復水溜部を接続して、
当該復水溜部に所望の長さを有する立下がり部を介して
レシ―バ―を接続すると共に、当該レシ―バ―と復水溜
部とを循環ポンプを介して連通し、上記復水溜部または
立下がり部に真空度調節弁を取り付けたものである。Means for Solving the Problems The technical means of the present invention taken to solve the above technical problem is to form a heating section in a heat exchanger and connect a steam supply pipe for heating,
In the case of connecting the condensate discharge device that discharges the condensate generated by heating, connect the condensate reservoir to the condensate discharge device,
A receiver is connected to the condensate section via a falling portion having a desired length, and the receiver and the condensate section are communicated via a circulation pump. A falling degree control valve is attached to the falling part.
【０００７】[0007]
【作用】上記の技術的手段の作用は下記の通りである。
熱交換器へ供給された加熱用の蒸気は被加熱物を加熱す
ることにより凝縮して復水となり復水溜部に至る。復水
溜部と立下がり部とレシ―バ―に溜った復水を循環ポン
プで強制的に再度復水溜部へ循環させることにより、復
水溜部に流下してきた空気等の不凝縮ガスは復水の循環
流に混入してレシ―バ―に至る。The operation of the above technical means is as follows.
The heating steam supplied to the heat exchanger is condensed by heating the object to be heated and becomes condensed water to reach the condensate reservoir. Non-condensable gas such as air flowing down to the condensate reservoir is condensed by forcibly circulating the condensate collected in the condensate reservoir, falling portion, and receiver to the condensate reservoir again by the circulation pump. Mixed into the circulating flow of water to reach the receiver.
【０００８】レシ―バ―内の不凝縮ガスは、ガスの発生
量が少ない場合はレシ―バ―内に溜め置き、加熱工程が
完了後に手動で外部に排除したり、あるいは、不凝縮ガ
スの存在をフロ―ト等で検知して弁口から不凝縮ガスだ
けを自動的に排出するエア―ベント等をレシ―バ―に取
り付けることにより外部に排除することができる。When the amount of generated gas is small, the non-condensable gas in the receiver is stored in the receiver, and after the heating process is completed, the non-condensable gas is manually removed to the outside, or the non-condensable gas is removed. An air vent or the like that detects the presence by a float or the like and automatically discharges only the non-condensable gas from the valve port can be removed to the outside by attaching the receiver to a receiver.
【０００９】復水溜部または立下がり部に真空度調節弁
を取り付けたことにより、真空度調節弁を適宜操作して
真空度を調節することによって、立下がり部や復水溜部
ひいては熱交換器内の真空度を任意に調節することがで
き、加熱用蒸気の温度を被加熱物に応じて変更すること
ができる。By installing a vacuum control valve in the condensate or falling section, the degree of vacuum is adjusted by appropriately operating the vacuum control valve, so that the fall section, the condensate section, and the heat exchanger Can be arbitrarily adjusted, and the temperature of the heating steam can be changed according to the object to be heated.
【００１０】[0010]
【実施例】上記の技術的手段の具体例を示す実施例を図
１に基き説明する。本実施例において従来技術と同一部
材には同一符号を付す。蒸気加熱装置としての熱交換器
１に蒸気供給管２を圧力調整弁６を介して接続する。熱
交換器１の下部には復水排出装置としてのスチ―ムトラ
ップ４を取り付ける。スチ―ムトラップ４の下部に復水
溜部７を接続する。復水溜部７は断面円筒状でその側部
に所定の長さを有する立下がり部８を取り付ける。立下
がり部８の上部には開閉弁９を取り付けると共に、その
下端１０をレシ―バ―１１内に開口して配置する。レシ
―バ―１１も円筒状のタンクとして上部にエア―ベント
１２と開閉弁１３を取り付け、下部には水を補給するた
めの補給水管１４を接続すると共に、循環ポンプ１５の
吸込口１６を接続する。循環ポンプ１５の吐出口１７は
管路１８を介して復水溜部７の下端と接続する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment showing a specific example of the above technical means will be described with reference to FIG. In this embodiment, the same members as those of the prior art are denoted by the same reference numerals. A steam supply pipe 2 is connected to a heat exchanger 1 as a steam heating device via a pressure regulating valve 6. A steam trap 4 as a condensate discharge device is attached to a lower portion of the heat exchanger 1. The condensate reservoir 7 is connected to the lower part of the steam trap 4. The condensate reservoir 7 has a falling section 8 having a cylindrical shape in cross section and a predetermined length attached to a side portion thereof. An on-off valve 9 is attached to the upper part of the falling part 8, and a lower end 10 of the falling part 8 is arranged to be opened in the receiver 11. The receiver 11 is also a cylindrical tank with an air vent 12 and an on-off valve 13 mounted on the upper part, a replenishing water pipe 14 for replenishing water is connected on the lower part, and a suction port 16 of a circulation pump 15 is connected. I do. The discharge port 17 of the circulation pump 15 is connected to the lower end of the condensate reservoir 7 via a pipe 18.
【００１１】復水溜部７と立下がり部８の間の連通路２
２に管路２３と開閉弁２４を介して真空度調節弁２５を
取り付ける。真空度調節弁２５は周知の自力式圧力調節
弁を用いることができ、管路２３側の圧力が設定圧力よ
りも低下するとその主弁が開口して入口２６側から大気
を吸引して復水溜部７及び立下がり部８へ供給すること
により、復水溜部７内ひいては熱交換器１内を所定の真
空圧力に維持するものである。真空度調節弁２５として
本実施例においては自力式圧力調節弁を用いた例を示し
たが、その他周知の圧力センサ―と他力式圧力調節弁と
を組み合わせて用いることもできる。A communication passage 2 between the condensate reservoir 7 and the falling portion 8
2 is provided with a vacuum control valve 25 via a pipe 23 and an on-off valve 24. As the degree of vacuum control valve 25, a well-known self-acting pressure control valve can be used. When the pressure on the pipe line 23 becomes lower than the set pressure, the main valve is opened and the air is sucked from the inlet 26 to return the condensate. By supplying it to the section 7 and the falling section 8, the inside of the condensate sump 7 and thus the inside of the heat exchanger 1 is maintained at a predetermined vacuum pressure. In the present embodiment, an example in which a self-powered pressure control valve is used as the vacuum degree control valve 25 has been described. However, other well-known pressure sensors and other power type pressure control valves can be used in combination.
【００１２】復水溜部７の上部には管路２０と開閉弁２
１を取り付ける。開閉弁２１を開弁状態とすることによ
り復水溜部７内を大気と連通状態とし、閉弁状態とする
ことにより大気と遮断状態とするものである。A conduit 20 and an on-off valve 2 are provided above the condensate reservoir 7.
Attach 1. When the on-off valve 21 is opened, the inside of the condensate reservoir 7 is in communication with the atmosphere, and when the valve is closed, the inside of the condensate reservoir 7 is in a state of being cut off from the atmosphere.
【００１３】真空度調節弁２５の設定圧力は、復水溜部
７内の圧力が熱交換器１内で必要とする圧力よりもわず
かに低くなるように設定する。例えば、熱交換器１内で
３６０ミリメ―トル水銀柱の圧力が必要である場合、復
水溜部７内の圧力は復水等が流下するためにはそれより
低い値でなければならず、例えば、２９０ミリメ―トル
水銀柱に設定する。立下がり部８の長さは通常１０メ―
トル程度の長さとするのが望ましい。The set pressure of the vacuum control valve 25 is set so that the pressure in the condensate reservoir 7 is slightly lower than the pressure required in the heat exchanger 1. For example, if a pressure of 360 millimeters of mercury is required in the heat exchanger 1, the pressure in the condensate sump 7 must be lower than that in order for condensate to flow down. Set to 290 millimeters of mercury. The length of the falling part 8 is usually 10 meters
It is desirable that the length be on the order of torr.
【００１４】次に作用を説明する。熱交換器１で加熱を
行う前に復水溜部７内の残存空気を除去しておく必要が
ある場合は、まず開閉弁２１を開弁状態として、循環ポ
ンプ１５を駆動してレシ―バ―１１内の水を復水溜部７
に供給し、開閉弁２１から残存空気を除去した後開閉弁
２１を閉弁状態にし水がレシ―バ―１１内へ自重で流下
することにより、復水溜部７の上部に所定の真空圧力域
を形成してから加熱を行う。加熱の前に残存空気の除去
が必要でない場合は上記操作は必要無い。Next, the operation will be described. If it is necessary to remove the residual air in the condensate reservoir 7 before heating in the heat exchanger 1, the on-off valve 21 is first opened and the circulating pump 15 is driven to drive the receiver. Condensate reservoir 7
After the residual air is removed from the on-off valve 21, the on-off valve 21 is closed and the water flows into the receiver 11 by its own weight, so that a predetermined vacuum pressure range is formed above the condensate reservoir 7. Is formed and then heated. If the removal of residual air is not necessary before heating, the above operation is not necessary.
【００１５】蒸気供給管２から圧力調整弁６を経て供給
された低圧の加熱用蒸気は、熱交換器１内で図示しない
被加熱物を加熱することにより凝縮して復水となり、ス
チ―ムトラップ４から復水溜部７内へ流下する。復水溜
部７内に溜った復水は循環ポンプ１５から供給されたレ
シ―バ―１１内の循環流体の一部と共に立下がり部８を
流下してレシ―バ―１１内へ至る。この場合、加熱用の
蒸気に混入してきた空気等の不凝縮ガスは、復水と共に
復水溜部７内に至り、循環流体に巻込まれて立下がり部
８を流下してレシ―バ―１１の上部に溜り、エア―ベン
ト１２または開閉弁１３を経て外部に排除される。The low-pressure heating steam supplied from the steam supply pipe 2 via the pressure regulating valve 6 is condensed by heating an unillustrated object to be heated in the heat exchanger 1 to become condensed water and form a steam trap. 4 flows down into the condensate reservoir 7. The condensate collected in the condensate reservoir 7 flows down the falling part 8 together with a part of the circulating fluid in the receiver 11 supplied from the circulation pump 15 and reaches the receiver 11. In this case, the non-condensable gas such as air mixed into the heating steam reaches the condensate reservoir 7 together with the condensed water, is caught by the circulating fluid, flows down the falling portion 8, and flows into the receiver 11. It accumulates at the upper part and is discharged outside through the air vent 12 or the on-off valve 13.
【００１６】レシ―バ―１１内の復水の量が所定以上に
達すると図示しない排出管から外部へ排出したり、循環
ポンプ１５の吐出口１７を分岐した同じく図示しない分
岐管から外部へ排出する。また、循環流体の温度が所定
以上に達して循環ポンプ１５に悪影響を及ぼす可能性が
生じた場合は、補給水管１４から冷却水を供給して所望
温度とすることができる。When the amount of condensed water in the receiver 11 reaches a predetermined value or more, the condensate is discharged from a discharge pipe (not shown) to the outside, or discharged from a branch pipe (not shown) branched from the discharge port 17 of the circulation pump 15. I do. If the temperature of the circulating fluid reaches a predetermined temperature or more and adversely affects the circulating pump 15, cooling water can be supplied from the makeup water pipe 14 to a desired temperature.
【００１７】[0017]
【発明の効果】上記のように本発明によれば、熱交換器
に復水溜部と立下がり部とレシ―バ―と循環ポンプを順
次接続して復水溜部の復水を強制的に循環することによ
り、復水と共に空気等の不凝縮ガスもレシ―バ―まで流
下させることができ、従って、熱交換器内の不凝縮ガス
を循環流で排除して、熱交換器内で加熱ムラを生じるこ
とがない。As described above, according to the present invention, the condensate section, the falling section, the receiver and the circulation pump are sequentially connected to the heat exchanger to forcibly circulate the condensate in the condensate section. By doing so, non-condensable gas such as air can flow down to the receiver together with the condensate.Therefore, the non-condensable gas in the heat exchanger is eliminated by the circulating flow, and uneven heating in the heat exchanger. Does not occur.
【００１８】真空度調節弁を取り付けたことにより、熱
交換器内の真空度を被加熱物に応じて任意に設定するこ
とができ、多種多様な被加熱物であっても任意に加熱温
度を設定して加熱ムラを防止することができる。Since the degree of vacuum control valve is attached, the degree of vacuum in the heat exchanger can be set arbitrarily according to the object to be heated. Setting can prevent uneven heating.
【図１】本発明の蒸気加熱装置の実施例の構成図であ
る。FIG. 1 is a configuration diagram of an embodiment of a steam heating device of the present invention.
【図２】蒸気加熱装置の従来例を示す構成図である。FIG. 2 is a configuration diagram showing a conventional example of a steam heating device.
１ 熱交換器 ２ 蒸気供給管 ４ スチ―ムトラップ ７ 復水溜部 ８ 立下がり部 １１ レシ―バ― １５ 循環ポンプ ２５ 真空度調節弁 DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Steam supply pipe 4 Steam trap 7 Condensate sump 8 Falling part 11 Receiver 15 Circulation pump 25 Vacuum control valve
Claims (1)
気供給管を接続すると共に、加熱により生じた復水を排
出する復水排出装置を接続したものにおいて、復水排出
装置に復水溜部を接続して、当該復水溜部に所望の長さ
を有する立下がり部を介してレシ―バ―を接続すると共
に、当該レシ―バ―と復水溜部とを循環ポンプを介して
連通し、上記復水溜部または立下がり部に真空度調節弁
を取り付けたことを特徴とする蒸気加熱装置。1. A condensate discharge device for discharging a condensate generated by heating while connecting a steam supply pipe for heating and forming a heating section to the heat exchanger. The condensate section is connected, a receiver is connected to the condensate section via a falling section having a desired length, and the receiver and the condensate section are connected via a circulation pump. A steam heating apparatus, wherein a vacuum control valve is attached to the condensate reservoir or the falling portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33394094A JP3282005B2 (en) | 1994-12-15 | 1994-12-15 | Steam heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33394094A JP3282005B2 (en) | 1994-12-15 | 1994-12-15 | Steam heating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08170886A JPH08170886A (en) | 1996-07-02 |
| JP3282005B2 true JP3282005B2 (en) | 2002-05-13 |
Family
ID=18271682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33394094A Expired - Fee Related JP3282005B2 (en) | 1994-12-15 | 1994-12-15 | Steam heating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3282005B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101161677B1 (en) * | 2010-12-28 | 2012-07-02 | 임주혁 | Steam generator for automatic water supply which uses vapor pressure |
| JP5925619B2 (en) * | 2012-06-28 | 2016-05-25 | 株式会社テイエルブイ | Condensate re-evaporation system |
-
1994
- 1994-12-15 JP JP33394094A patent/JP3282005B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08170886A (en) | 1996-07-02 |
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