JPS5856044B2 - Drain recovery device - Google Patents
Drain recovery deviceInfo
- Publication number
- JPS5856044B2 JPS5856044B2 JP53058521A JP5852178A JPS5856044B2 JP S5856044 B2 JPS5856044 B2 JP S5856044B2 JP 53058521 A JP53058521 A JP 53058521A JP 5852178 A JP5852178 A JP 5852178A JP S5856044 B2 JPS5856044 B2 JP S5856044B2
- Authority
- JP
- Japan
- Prior art keywords
- drain
- water
- tank
- water supply
- boiler
- 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
Links
Landscapes
- Jet Pumps And Other Pumps (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Description
【発明の詳細な説明】 本発明はボイラのドレン回収装置に関するものである。[Detailed description of the invention] The present invention relates to a boiler drain recovery device.
従来の一種式のドレン回収装置にち−いては、給水ポン
プによる給水及びドレンをボイラに再補給する工程で、
ドレンタンク内圧が高くなるため、負荷からの戻りドレ
ンが停滞するという不利な点を有してむり、ドレンが停
滞すると必要な蒸気が阻止されるため大きな禁書を起こ
す釦それがあった。Regarding conventional one-type drain recovery equipment, in the process of supplying water with a water supply pump and refilling the boiler with drain,
Since the internal pressure of the drain tank becomes high, it has the disadvantage that the drain returning from the load becomes stagnant, and when the drain stagnates, the necessary steam is blocked, causing a big problem.
これを解決するために中間タンクを用いれば防止できる
が、装置全体の大きさも大きくなり又コストも大幅に上
昇するという欠点があった。Although this problem can be avoided by using an intermediate tank, the problem is that the overall size of the device increases and the cost also increases significantly.
本発明は、ドレン戻り糸路の逆止弁の手前の部分を、さ
らに低圧の部分に連通ずるバイパス系路を設け、ボイラ
への給水並びにドレン再補給時にコノバイパス系路を開
くことにより、従来のものの上記の欠点を除き、ドレン
の停滞を防ぎ、しかも全体がコンパクトで小型となりコ
ストも小なるドレン回収装置を提供することを目的とす
るものである。The present invention provides a bypass system that connects the part of the drain return path in front of the check valve with a low-pressure part, and opens the cono-bypass system when water is supplied to the boiler and drain is resupplied. It is an object of the present invention to provide a drain recovery device that prevents drain stagnation, is compact and small in size, and is low in cost, while eliminating the above-mentioned drawbacks.
本発明は水タンク、給水ポンプ、ドレンタンク、ボイラ
及び下記の（４）、（Ｂ）、（Ｃ）、（Ｄ）及び（Ｅ）
の糸路を備え、前記ドレンタンク内の水を前記給水ポン
プにより前記ボイラに送るようにしたドレン回収装置に
釦いて、下記の（Ｆ″）の糸路を備えたことを特徴とす
るドレン回収装置。The present invention relates to a water tank, a water supply pump, a drain tank, a boiler, and the following (4), (B), (C), (D) and (E).
The drain recovery device is equipped with a thread path (F″) as shown below, and the water in the drain tank is sent to the boiler by the water supply pump. Device.
（Ａ） 前記水タンクから、前記給水ポンプを介して
前記ドレンタンクに水を導く給水ポンプ系路。(A) A water supply pump system that leads water from the water tank to the drain tank via the water supply pump.
（Ｂ） 前記ドレンタンクから逆止弁を介して前記ボ
イラに水を導くドレン再補給系路。(B) A drain replenishment line that leads water from the drain tank to the boiler via a check valve.
（Ｃ） 前記ボイラから負荷に蒸気を導く蒸気系路。(C) A steam line that leads steam from the boiler to the load.
（Ｄ） 前記負荷から逆止弁を介して前記ドレンタン
クに凝縮水を導くドレン戻り系路。(D) A drain return line that guides condensed water from the load to the drain tank via a check valve.
橿）前記ドレンタンクから前記給水ポンプの停止時に開
き、かつ前記ドレンタンク内を所定の最低圧力以上に確
保する弁機構を介して前記水タンクに余剰の蒸気及び／
又は水を導く調整回路。(b) Excess steam and/or water is transferred from the drain tank to the water tank via a valve mechanism that opens when the water supply pump is stopped and ensures a predetermined minimum pressure or higher in the drain tank.
Or a regulating circuit that directs water.
（Ｆ′）前記ドレン戻り系路に釦いて、前記負荷と前記
逆止弁との間に設けた分岐点から、該分岐点よりも低圧
の部分に接続し、かつ途中に前記給水ポンプの運転時に
開となる弁を備えているバイパス系路である。(F') A button is pressed on the drain return line, and a branch point provided between the load and the check valve is connected to a part with a lower pressure than the branch point, and the water supply pump is operated on the way. This is a bypass system equipped with a valve that is sometimes open.
本発明を実施例につき図面を用いて説明すれば、第１図
において１は給水ポンプ、２はドレンタンク、３はボイ
ラ、４は負荷、５は軟水タンクである。The present invention will be described with reference to the drawings. In FIG. 1, 1 is a water supply pump, 2 is a drain tank, 3 is a boiler, 4 is a load, and 5 is a soft water tank.
吸入管６、配管７，８、逆止弁９により給水ポンプ系路
が形成され、配管１０，１１．逆止弁１２によって給水
兼ドレン再補給系路が形成され、配管１３，１４、弁１
５により蒸気系路が形成され、配管１６，１７，１８、
スチームトラップ１９、逆止弁２０によりドレン戻り系
路が形成され、配管２１，２２，２３、及び弁として備
えられている電磁弁２４と圧力調整弁２５の二つの弁に
より調整系路としての圧力調整系路が形成されている。A water supply pump system is formed by the suction pipe 6, piping 7, 8, and check valve 9, and piping 10, 11 . A water supply/drain replenishment system is formed by the check valve 12, and the pipes 13, 14 and the valve 1
A steam system path is formed by 5, and piping 16, 17, 18,
A drain return system is formed by the steam trap 19 and the check valve 20, and the pressure is adjusted as a pressure adjustment system by the pipes 21, 22, 23, and two valves, a solenoid valve 24 and a pressure adjustment valve 25. A regulatory pathway is formed.
２６はドレンタンク２内の圧力を検出する圧力検出器、
２７はボイラの水位を検出する水位検出器である。26 is a pressure detector that detects the pressure inside the drain tank 2;
27 is a water level detector that detects the water level of the boiler.
水位検出器２７によって最高設定水位と最低設定水位に
対する水位を検出し、最低設定水位以下になろうとすれ
ば給水ポンプ１を起動せしめ最高設定水位を超えようと
すれば給水ポンプ１を停止せしめる信号を出すようにな
っている。The water level detector 27 detects the water level relative to the maximum set water level and the minimum set water level, and sends a signal to start the water supply pump 1 if the water level falls below the minimum set water level, and to stop the water supply pump 1 if the water level attempts to exceed the maximum set water level. It's about to come out.
スチームトラップ１９と逆止弁２０との間のドレン戻り
系路の一部に設けられた分岐点２８から、配管２９．３
０及び電磁弁３１により形成されるバイパス系路が分岐
し、電磁弁２４と圧力調整弁２５との間の圧力調整系路
に接続している。A pipe 29.3 is connected from a branch point 28 provided in a part of the drain return line between the steam trap 19 and the check valve 20.
A bypass line formed by the electromagnetic valve 24 and the solenoid valve 31 branches off and is connected to a pressure regulation line between the electromagnetic valve 24 and the pressure regulation valve 25.
このバイパス系路の終端は軟水タンク５に開放してもよ
く、また、ドレン再補給時に、分岐点２８より低圧にな
る部分に接続してもよい。The terminal end of this bypass system may be open to the soft water tank 5, or may be connected to a portion where the pressure is lower than the branch point 28 when refilling the drain.
第２図に示すように、給水ポンプ１が停止している間は
、電磁弁２４は開、電磁弁３１は閉となるようになって
いる。As shown in FIG. 2, while the water supply pump 1 is stopped, the solenoid valve 24 is open and the solenoid valve 31 is closed.
圧力調整弁２５は所定の最低圧力（高温のドレンを得る
ためには最低圧力としてばなるべく高い方がよいが、あ
１り高いと負荷４からドレンがドレンタンク２に戻らな
くなるので限度がある）がドレンタンク２内に確保され
るように設定されている。The pressure regulating valve 25 has a predetermined minimum pressure (in order to obtain high-temperature drain, it is better to set the minimum pressure as high as possible, but if it is too high, the drain from the load 4 will not return to the drain tank 2, so there is a limit) is secured in the drain tank 2.
電磁弁２４と圧力調整弁２５とにより、給水ポンプ１の
停止時に開き、かつドレンタンク２内を所定の最低圧力
以上に確保する弁機構が形成されている。The electromagnetic valve 24 and the pressure regulating valve 25 form a valve mechanism that opens when the water supply pump 1 is stopped and maintains the inside of the drain tank 2 at a predetermined minimum pressure or higher.
ボイラ３の定常運転に際しては水位は最高と最低の間に
あり、給水ポンプ１は停止しており、従って電磁弁２４
が開放かつ電磁弁３１は閉鎖されていて、ドレンタンク
２内の圧力は圧力調整弁２５によシ設定されている最低
圧力（大気圧より高い）となりドレンはスチームトラッ
プ１９を通りドレンタンク２内に流入する。During steady operation of the boiler 3, the water level is between the highest and lowest levels, the feed pump 1 is stopped, and therefore the solenoid valve 24
is open and the solenoid valve 31 is closed, and the pressure in the drain tank 2 becomes the lowest pressure (higher than atmospheric pressure) set by the pressure regulating valve 25, and the drain passes through the steam trap 19 and flows into the drain tank 2. flows into.
ドレンと既にドレンタンク２内に入っている温水とが熱
交換を行ないドレンタンク２内の水は設定圧力の飽和温
度となる。The drain and the hot water already in the drain tank 2 exchange heat, and the water in the drain tank 2 reaches the saturation temperature of the set pressure.
この時生ずる余剰蒸気又は余剰温水或いはその両者は電
磁弁２４と圧力調整弁２５を経て軟水タンク５に戻され
る。Excess steam and/or surplus hot water generated at this time is returned to the soft water tank 5 via the electromagnetic valve 24 and the pressure regulating valve 25.
この軟水タンク５でも余剰蒸気、温水と既に入っている
水とが熱交換を行なうが、大気に開放されているため１
００℃以下の温水となる。This soft water tank 5 also exchanges heat between the excess steam, hot water, and the water already in it, but since it is open to the atmosphere, 1
The water will be hot below 00℃.
この状態でバイパス系路にはドレンは流れない。In this state, no drain flows into the bypass system.
ボイラ３の運転が続けられボイラ３内の水位が最低設定
水位よりも下がろうとすると水位検出器２７が信号を発
し給水ポンプ１を起動せしめ、シーケンスに従って電磁
弁２４は閉じ、給水ポンプ１の吐出圧により、ドレンタ
ンク２内にあった設定圧力における飽和水はドレンタン
ク２より押し出されてボイラ３の鐘体に入る。When the boiler 3 continues to operate and the water level in the boiler 3 is about to drop below the minimum set water level, the water level detector 27 issues a signal to start the feed water pump 1, the solenoid valve 24 closes according to the sequence, and the water pump 1 discharges. Due to the pressure, the saturated water at the set pressure in the drain tank 2 is forced out of the drain tank 2 and enters the bell body of the boiler 3.
この時、給水ポンプ１の起動と同時に電磁弁３１が開き
バイパス系路が通り、負荷より戻るドレンはスチームト
ラップ１９よりバイパス系路に入り電磁弁３１．圧力調
整弁２５を経て軟水タンク５に流れる。At this time, at the same time as the water supply pump 1 is started, the solenoid valve 31 opens and a bypass path passes through, and the drain returning from the load enters the bypass path from the steam trap 19 through the solenoid valve 31. The water flows through the pressure regulating valve 25 to the soft water tank 5.
従ってこの工程に釦いてもドレンが停滞することはない
。Therefore, even if this process is turned on, the drain will not become stagnant.
ボイラ３内の水位が最高設定水位に達したら水位検出器
２７の信号により給水ポンプ１が停止し、電磁弁２４が
開き、電磁弁３１は閉じ前述の状態となりサイクルが繰
り返される。When the water level in the boiler 3 reaches the highest set water level, the feed pump 1 is stopped by a signal from the water level detector 27, the solenoid valve 24 is opened, and the solenoid valve 31 is closed, and the cycle is repeated.
第３図は別の実施例におけるシーケンスを示し、ドレン
タンク２に設けられた圧力検出器２６によリドクンタン
ク２内の圧力をある最低設定圧力以下にならないよう最
低圧力保持をするもので、給水ポンプ１の起動・停止は
前述の例の如く水位検出器２７の信号による。FIG. 3 shows a sequence in another embodiment, in which a pressure detector 26 provided in the drain tank 2 is used to maintain the minimum pressure so that the pressure in the drain tank 2 does not fall below a certain minimum set pressure, and the water supply pump 1 is started and stopped by the signal from the water level detector 27 as in the above example.
この場合圧力調整弁２５の代りに可変又は固定のオリフ
ィスを用いてもよい。In this case, a variable or fixed orifice may be used instead of the pressure regulating valve 25.
以上の実施例においては、上述の横取により、給水並び
にドレン再補給時に釦いても戻りドレンが停滞すること
なく運転が円滑となるほか、ドレンをボイラ３に再補給
するのに給水ポンプ１の吐出圧を用いているので、ドレ
ンタンク２をボイラ３より高所に置く必要がなく装置全
体が小型となり取付作業も容易となる。In the embodiment described above, the above-mentioned interception allows smooth operation without stagnation of returning drain even if the button is pressed during water supply and drain refilling. Since the discharge pressure is used, there is no need to place the drain tank 2 higher than the boiler 3, and the entire device becomes smaller and the installation work becomes easier.
會たドレンタンク２の圧力が大気圧に開放されずある圧
力を保つので、高温ドレンの熱の無駄な損失を防ぐこと
ができる。Since the pressure of the drain tank 2 is maintained at a certain pressure without being released to atmospheric pressure, wasteful loss of heat from the high-temperature drain can be prevented.
また、調整回路の弁として、圧力調整弁２５を用いず、
電磁弁２４のみを備えるようにしてもよい。Moreover, the pressure regulating valve 25 is not used as a valve of the regulating circuit,
Only the solenoid valve 24 may be provided.
この場合でも、ドレンをボイラ３に戻すのに給水ポンプ
１の吐出圧を用しることができ、ドレンタンク２を高所
に置かずに済む。Even in this case, the discharge pressure of the water supply pump 1 can be used to return the drain to the boiler 3, and the drain tank 2 does not need to be placed at a high place.
さらに、ドレンタンク２の中では設定圧の下でフラッシ
ングし、水の中の溶存酸素もフラッシングして気化して
蒸気と共に電磁弁２４を経て軟水タンク５に排除され、
これは給水ポンプ１の停止時に行なわれるので、酸素が
再びボイラ３には送られないので、脱気効果をもたらす
ことができる。Furthermore, the drain tank 2 is flushed under a set pressure, and the dissolved oxygen in the water is also flushed and vaporized, which is then discharged along with the steam to the soft water tank 5 via the solenoid valve 24.
Since this is done when the feed water pump 1 is stopped, oxygen is not sent to the boiler 3 again, so that a deaeration effect can be achieved.
本発明により、どの工程においてもドレン戻り糸路はド
レンの戻り圧力よりも低い圧力の部分に通じてしるので
、ドレンは常に流れて停滞することなく、停滞による禁
書を除くことができるドレン回収装置を提供することが
でき実用上極めて犬なる効果を有するものである。According to the present invention, in any process, the drain return line is connected to a part of the pressure lower than the return pressure of the drain, so the drain always flows and does not stagnate, and it is possible to remove prohibited documents due to stagnation.Drain recovery It is possible to provide a device that is extremely effective in practical terms.
図面は本発明の実施例を示し、第１図はフロー図、第２
図はシーケンス図の一部、第３図は別の実施例のシーケ
ンス図の一部である。
１・・・給水ポンプ、２・・・ドレンタンク、３・・・
ボイラ、４・・・負荷、５・・・軟水タンク、６・・・
吸入管、７・・・配管、８・・・配管、９・・・逆止弁
、１０・・・配管、１１・・・配管、１２・・・逆止弁
、１３・・・配管、１４・・・配管、１５・・・弁、１
６・・・配管、１７・・・配管、１８・・・配管、１９
・・・スチームトラップ、２０・・・逆止弁、２１・・
・配管、２２・・・配管、２３・・・配管、２４・・・
電磁弁、２５・・・圧力調整弁、２６・・・圧力検出器
、２７・・・水位検出器、２８・・・分岐点、２９．３
０・・・配管、３１・・・電磁弁。The drawings show embodiments of the invention, with FIG. 1 being a flow diagram and FIG.
The figure is a part of a sequence diagram, and FIG. 3 is a part of a sequence diagram of another embodiment. 1... Water supply pump, 2... Drain tank, 3...
Boiler, 4...Load, 5...Soft water tank, 6...
Suction pipe, 7... Piping, 8... Piping, 9... Check valve, 10... Piping, 11... Piping, 12... Check valve, 13... Piping, 14 ...Piping, 15...Valve, 1
6... Piping, 17... Piping, 18... Piping, 19
...Steam trap, 20...Check valve, 21...
・Piping, 22...Piping, 23...Piping, 24...
Solenoid valve, 25... Pressure adjustment valve, 26... Pressure detector, 27... Water level detector, 28... Branch point, 29.3
0... Piping, 31... Solenoid valve.
Claims (1)
下記の（４）、（Ｂ）、Ｃ）、０及び橿）の糸路を備え
、前記ドレンタンク内の水を前記給水ポンプにより前記
ボイラに送るようにしたドレン回収装置においで、下記
の（Ｆ）の糸路を備えたことを特徴とするドレン回収装
置。 （４）前記水タンクから、前記給水ポンプを介して前記
ドレンタンクに水を導く給水ポンプ系路。 ＣＢ） 前記ドレンタンクから逆止弁を介して前記ボ
イラに水を導くドレン再補給系路。 （Ｃ） 前記ボイラから負荷に蒸気を導く蒸気系路。 （Ｄ） 前記負荷から逆止弁を介して前記ドレンタン
クに凝縮水を導くドレン戻り糸路。 矧 前記ドレンタンクから前記給水ポンプの停止時に開
き、かつ前記ドレンタンク内を所定の最低圧力以上に確
保する弁機構を介して前記水タンクに余剰の蒸気及び／
又は水を導く調整回路。 （Ｆ） 前記ドレン戻り糸路にトいて、前記負荷と前
記逆止弁との間に設けた分岐点から、該分岐点よりも低
圧の部分に接続し、かつ途中に前記給水ポンプの運転時
に開となる弁を備えているバイパス系路。[Scope of Claims] 1. A water tank, a water supply pump, a drain tank, a boiler, and the following yarn paths (4), (B), C), 0 and 1) are provided, and the water in the drain tank is transferred to the water supply. A drain recovery device configured to send drain to the boiler by a pump, characterized in that the drain recovery device includes a thread path as shown in (F) below. (4) A water supply pump line that leads water from the water tank to the drain tank via the water supply pump. CB) A drain replenishment line that leads water from the drain tank to the boiler via a check valve. (C) A steam line that leads steam from the boiler to the load. (D) A drain return path that leads condensed water from the load to the drain tank via a check valve. Excess steam and/or water is transferred from the drain tank to the water tank via a valve mechanism that opens when the water supply pump is stopped and ensures that the inside of the drain tank is at a predetermined minimum pressure or higher.
Or a regulating circuit that directs water. (F) The drain return line is connected from a branch point provided between the load and the check valve to a portion having a lower pressure than the branch point, and on the way, when the water supply pump is operating, A bypass line equipped with a valve that opens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53058521A JPS5856044B2 (en) | 1978-05-17 | 1978-05-17 | Drain recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53058521A JPS5856044B2 (en) | 1978-05-17 | 1978-05-17 | Drain recovery device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54150502A JPS54150502A (en) | 1979-11-26 |
| JPS5856044B2 true JPS5856044B2 (en) | 1983-12-13 |
Family
ID=13086721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53058521A Expired JPS5856044B2 (en) | 1978-05-17 | 1978-05-17 | Drain recovery device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5856044B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS636175Y2 (en) * | 1983-05-19 | 1988-02-22 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5924012B2 (en) * | 2012-02-10 | 2016-05-25 | 三浦工業株式会社 | Drain collection system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5340562Y2 (en) * | 1976-05-06 | 1978-09-30 |
-
1978
- 1978-05-17 JP JP53058521A patent/JPS5856044B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS636175Y2 (en) * | 1983-05-19 | 1988-02-22 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54150502A (en) | 1979-11-26 |
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