JP3282006B2 - Steam heating device - Google Patents

Steam heating device

Info

Publication number
JP3282006B2
JP3282006B2 JP33394194A JP33394194A JP3282006B2 JP 3282006 B2 JP3282006 B2 JP 3282006B2 JP 33394194 A JP33394194 A JP 33394194A JP 33394194 A JP33394194 A JP 33394194A JP 3282006 B2 JP3282006 B2 JP 3282006B2
Authority
JP
Japan
Prior art keywords
heating
condensate
steam
heat exchanger
receiver
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
Application number
JP33394194A
Other languages
Japanese (ja)
Other versions
JPH08170887A (en
Inventor
高之 森井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tlv Co Ltd
Original Assignee
Tlv Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tlv Co Ltd filed Critical Tlv Co Ltd
Priority to JP33394194A priority Critical patent/JP3282006B2/en
Publication of JPH08170887A publication Critical patent/JPH08170887A/en
Application granted granted Critical
Publication of JP3282006B2 publication Critical patent/JP3282006B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【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、上記立下がり部に開
閉操作可能な大気開放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 reservoir via a falling portion having a desired length, and the receiver and the condensate reservoir are communicated via a circulating pump. It is equipped with an atmosphere opening valve that can be opened and closed.

【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】立下がり部に大気開放弁を取り付けたこと
により、大気開放弁を開弁操作することによってその大
気開放弁の下部の立下がり部の水頭を無くすことができ
て、立下がり部の水頭高さを変更することができ、従っ
て、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。
Since the air release valve is attached to the falling portion, the head of the falling portion below the air release valve can be eliminated by opening the air opening valve, and the water head of the falling portion can be eliminated. The height can be changed, so that the degree of vacuum in the condensate reservoir and thus in 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】立下がり部8に管路22,23,24を介
して大気開放弁25,26,27を取り付ける。大気開
放弁25,26,27は一般的な開閉弁を用いることが
できる。本実施例においては、大気開放弁25,26が
閉弁した状態であり、大気開放弁27のみが開弁した状
態を示し、立下がり部8の高さは管路24から上の長さ
となり、大気開放弁27が閉弁状態の場合よりも真空度
はわずかに低いものとなる。本実施例においては大気開
放弁をほぼ等間隔に3個取り付けた例を示したが、被加
熱物の状態によっては1個だけでも良い。
Atmospheric release valves 25, 26, 27 are attached to the falling portion 8 via conduits 22, 23, 24. As the atmosphere release valves 25, 26, and 27, general on-off valves can be used. In this embodiment, the air release valves 25 and 26 are closed, and only the air release valve 27 is open. The height of the falling portion 8 is the length above the pipeline 24. The degree of vacuum is slightly lower than when the atmosphere release valve 27 is in the closed state. In this embodiment, an example is shown in which three atmospheric release valves are attached at substantially equal intervals, but only one may be provided depending on the state of the object to be heated.

【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】それぞれの真空圧力は、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。
Each vacuum pressure 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 internal pressure must be lower than that of the condensate to flow down, for example, set to 290 millimeters of mercury. It is desirable that the length of the falling portion 8 is generally about 10 meters.

【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】大気開放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変更することがで
き、多様な被加熱物であっても加熱温度を変更して加熱
ムラを防止することができる。
Since the air release valve is attached, the degree of vacuum in the heat exchanger can be changed according to the object to be heated. Can be prevented.

【図面の簡単な説明】[Brief description of the drawings]

【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.

【符号の説明】[Explanation of symbols]

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 25,26,27 大気開放弁 DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Steam supply pipe 4 Steam trap 7 Condensate sump 8 Falling part 11 Receiver 15 Circulation pump 25,26,27 Atmospheric release valve

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 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、上記立下がり部に開閉操作可能な大気開放弁を
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 device, characterized in that an air release valve that is open and closed is connected to the falling portion and is connected to the falling portion.
JP33394194A 1994-12-15 1994-12-15 Steam heating device Expired - Fee Related JP3282006B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33394194A JP3282006B2 (en) 1994-12-15 1994-12-15 Steam heating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33394194A JP3282006B2 (en) 1994-12-15 1994-12-15 Steam heating device

Publications (2)

Publication Number Publication Date
JPH08170887A JPH08170887A (en) 1996-07-02
JP3282006B2 true JP3282006B2 (en) 2002-05-13

Family

ID=18271694

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33394194A Expired - Fee Related JP3282006B2 (en) 1994-12-15 1994-12-15 Steam heating device

Country Status (1)

Country Link
JP (1) JP3282006B2 (en)

Also Published As

Publication number Publication date
JPH08170887A (en) 1996-07-02

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