JPH10185458A - Controller for air-cooled high pressure condenser - Google Patents
Controller for air-cooled high pressure condenserInfo
- Publication number
- JPH10185458A JPH10185458A JP8339195A JP33919596A JPH10185458A JP H10185458 A JPH10185458 A JP H10185458A JP 8339195 A JP8339195 A JP 8339195A JP 33919596 A JP33919596 A JP 33919596A JP H10185458 A JPH10185458 A JP H10185458A
- Authority
- JP
- Japan
- Prior art keywords
- condenser
- pressure
- controller
- constant
- control
- 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
Landscapes
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ボイラを有するご
み処理プラントにおける空冷式高圧復水器の制御装置に
関する。The present invention relates to a control device for an air-cooled high-pressure condenser in a waste treatment plant having a boiler.
【０００２】[0002]
【従来の技術】図２に示すように、空冷式高圧復水器
は、ボイラからの蒸気が流入する蒸気分流管１１とこの
管にそれぞれ一端が接続された多数の復水用放熱細管１
２とこの細管の他端がそれぞれ接続された復水集合管１
３で構成されており、復水器冷却用ファン５で空冷する
ことで復水器内の熱エネルギーを奪い蒸気を復水する。2. Description of the Related Art As shown in FIG. 2, an air-cooled high-pressure condenser comprises a steam distribution pipe 11 into which steam from a boiler flows, and a plurality of heat-dissipating radiating tubes 1 each having one end connected to the pipe.
2 and condensate collecting pipe 1 to which the other end of this thin pipe is connected
The cooling water is cooled by a condenser cooling fan 5 to deprive the condenser of heat energy and condense the steam.
【０００３】復水器の制御は、復水器内の蒸気圧を圧力
検出器２１で検出し、その圧力Ｐ1と設定値ＳＶPとの偏
差を制御器６でＰＩＤ演算して復水器出口の調節弁４を
制御することで圧力を一定に制御すると共に、復水温度
を温度検出器２４で検出し、その温度Ｔ1と設定値ＳＶT
との偏差を制御器７でＰＩＤ演算して復水ファン５を制
御することで復水温度を一定に制御している。The condenser is controlled by detecting the steam pressure in the condenser by a pressure detector 21 and calculating the PID of a deviation between the pressure P 1 and a set value SV P by a controller 6 to calculate a condenser ID. The pressure is controlled to be constant by controlling the outlet control valve 4, the condensate temperature is detected by the temperature detector 24, and the temperature T 1 and the set value SV T are detected.
The controller 7 controls the condensing fan 5 by performing PID calculation on the controller 7 to control the condensed water temperature to be constant.
【０００４】[0004]
【発明が解決しようとする課題】ところで、実際のプラ
ントにおける復水器のデータを収集してみると、制御器
のＰＩＤゲインをチューニングした後においても、圧
力，温度共に４０％程度の振動が乗ってしまい、調節弁
の耐久度及び復水ファンのエネルギロス（温度振動によ
る起動・停止エネルギ損失）に問題がある。By the way, when collecting the data of the condenser in the actual plant, even after the PID gain of the controller is tuned, the vibration of about 40% in both pressure and temperature occurs. Therefore, there is a problem in the durability of the control valve and the energy loss of the condensing fan (start / stop energy loss due to temperature vibration).
【０００５】この圧力と温度の振動の主たる原因を考え
ると、以下のようなことが考えられる。圧力制御を行う
場合、基本的に制御対象物の気相分体積（気体分）が一
定であることが安定に制御する上での条件である。高圧
復水器についての気相分体積とは、復水器内における復
水された液面より上部から復水器入口までの蒸気で占め
られている体積のことである。この体積が一定であれば
良いが、温度制御で復水ファンの出力を変化させること
によって、復水器内の液面が上下してしまい、気相分体
積が増減し、圧力制御を安定にすることが不可能であ
る。Considering the main causes of the pressure and temperature oscillations, the following can be considered. In the case of performing pressure control, basically, a condition for stable control is that a gas phase partial volume (gas portion) of a control target is constant. The gas phase volume for a high pressure condenser is the volume occupied by steam from above the condensed liquid level in the condenser to the condenser inlet. It is sufficient if this volume is constant, but by changing the output of the condenser fan by temperature control, the liquid level in the condenser rises and falls, the gas phase volume increases and decreases, and the pressure control stabilizes. It is impossible to do.
【０００６】即ち、この制御装置は、温度制御を起因と
して高圧復水器内部の気相分体積が変動することによ
り、高圧復水器内圧力制御を安定に動作させることが不
可能となる。That is, this control device cannot operate the pressure control inside the high-pressure condenser stably because the gas-phase partial volume inside the high-pressure condenser fluctuates due to the temperature control.
【０００７】本発明は、従来のこのような問題点に鑑み
てなされたものであり、その目的とするところは、復水
器内の圧力変動と温度変動を格段に抑制してエネルギ効
率を向上させることができる空冷式高圧復水器の制御装
置を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and has as its object to improve energy efficiency by remarkably suppressing pressure fluctuations and temperature fluctuations in a condenser. It is an object of the present invention to provide a control device for an air-cooled high-pressure condenser that can be operated.
【０００８】[0008]
【課題を解決するための手段】本発明の空冷式高圧復水
器の制御装置は、第１の制御器で、復水器内の気相圧力
（蒸気圧力）と液相圧力（復水圧力）との圧力差を復水
器の水位と比較して圧力差が一定となるように復水器出
口側調節弁を制御して気相分の体積を一定に保ち、第２
の制御器で復水器内の気相圧力を圧力設定値と比較して
気相圧力が一定となるように復水器冷却ファンを制御し
て圧力制御を掛け、復水器内の圧力変動と温度変動との
抑制を可能としたものである。A control device for an air-cooled high-pressure condenser according to the present invention is a first controller which comprises a gas-phase pressure (steam pressure) and a liquid-phase pressure (condensate pressure) in the condenser. ) Is compared with the water level of the condenser to control the condenser outlet-side regulating valve so that the pressure difference is constant, and the volume of the gas phase is kept constant.
The controller controls the condenser cooling fan so that the gas phase pressure in the condenser is compared with the set pressure value and controls the condenser cooling fan so that the gas phase pressure is constant. And temperature fluctuation can be suppressed.
【０００９】[0009]
【発明の実施の形態】図１に高圧蒸気復水器の制御構成
を示す。同図において、１は高圧復水器、２はボイラか
ら復水器への蒸気導入管、３は復水器から復水タンクへ
の復水導入管、４は復水導出管に設けられた復水調節
弁、５は復水器を空冷する復水器冷却用ファン、６は復
水器上部の気相圧力Ｐ1と復水器下部の液相圧力Ｐ2の差
圧△Ｐ（＝ＰＶ1）と水位設定値ＳＶ2との偏差をＰＩＤ
演算して調節弁４を制御し水位一定に制御する水位制御
器、７は前記気相圧力Ｐ1（＝ＰＶ2）と圧力設定値ＳＶ
Pとの偏差をＰＩＤ演算して冷却用ファン５を制御し、
気相圧力一定に制御する気相圧力制御器、２１は上記気
相圧力を検出する圧力検出器、２２は上記液相圧力を検
出する圧力検出器、２３は上記差圧△Ｐを求める減算器
を示す。FIG. 1 shows a control configuration of a high-pressure steam condenser. In the drawing, 1 is a high-pressure condenser, 2 is a steam introduction pipe from the boiler to the condenser, 3 is a condenser introduction pipe from the condenser to the condenser tank, and 4 is a condenser discharge pipe. condensate regulating valve, the condenser cooling fan for cooling the condenser 5, 6 condenser top of vapor pressure P 1 and the condenser portion of the liquid phase pressure P 2 of the differential pressure △ P (= PV 1 ) and the deviation between the water level set value SV 2 and the PID
A water level controller 7 which calculates and controls the control valve 4 to control the water level to be constant. The gas phase pressure P 1 (= PV 2 ) and the pressure set value SV
PID calculation of the deviation from P to control the cooling fan 5,
A gas phase pressure controller for controlling the gas phase pressure to be constant, 21 is a pressure detector for detecting the gas phase pressure, 22 is a pressure detector for detecting the liquid phase pressure, and 23 is a subtractor for obtaining the differential pressure ΔP. Is shown.
【００１０】以上のように構成されているので、水位制
御器６は、圧力検出器Ｐ1，Ｐ2で検出した圧力Ｐ1，Ｐ2
の圧力差△Ｐ（＝ＰＶ1）一定、即ち復水器内復水水位
が一定となるように調節弁４を制御する。この圧力差△
Ｐは物理的には復水器内部の液面の位置と比例関係とな
るので、復水器内部の水位を一定に保つことができる。
このことは気相分の体積を一定に制御することができる
ということである。With the above configuration, the water level controller 6 controls the pressures P 1 and P 2 detected by the pressure detectors P 1 and P 2.
The control valve 4 is controlled so that the pressure difference ΔP (= PV 1 ) is constant, that is, the condensate water level in the condenser is constant. This pressure difference △
Since P is physically proportional to the position of the liquid level inside the condenser, the water level inside the condenser can be kept constant.
This means that the volume of the gas phase can be controlled to be constant.
【００１１】この気相分体積一定に制御している状態で
圧力制御器７は、気相圧力Ｐ1（＝ＰＶ2）が一定となる
ように冷却用ファン５を制御し気相圧力を制御している
ので、気相圧力を一定に制御できる。したがって、復水
器内の圧力変動と温度変動を格段に制御することが可能
となる。In the state where the gas phase partial volume is controlled to be constant, the pressure controller 7 controls the cooling fan 5 so that the gas phase pressure P 1 (= PV 2 ) becomes constant and controls the gas phase pressure. Therefore, the gas pressure can be controlled to be constant. Therefore, it is possible to remarkably control the pressure fluctuation and the temperature fluctuation in the condenser.
【００１２】[0012]
【発明の効果】本発明は、上述のとおり構成されている
ので、次に記載する効果を奏する。Since the present invention is configured as described above, the following effects can be obtained.
【００１３】（１）復水器内の水位を一定に保ちながら
復水ファンを操作し圧力制御するので、復水器内の圧力
変動と温度変動を格段に抑制することが可能となる。(1) Since the pressure of the condenser is controlled by operating the condenser fan while maintaining the water level in the condenser constant, it is possible to remarkably suppress the pressure fluctuation and the temperature fluctuation in the condenser.
【００１４】（２）そのためエネルギ効率及び調節弁の
耐久度が向上する。(2) Therefore, the energy efficiency and the durability of the control valve are improved.
【図１】本発明にかかる高圧蒸気復水器制御構成図。FIG. 1 is a control configuration diagram of a high-pressure steam condenser according to the present invention.
【図２】従来例にかかる高圧蒸気復水器制御構成図。FIG. 2 is a control configuration diagram of a high-pressure steam condenser according to a conventional example.
１…高圧蒸気復水器 ２…蒸気導入管 ３…復水導入管 ４…復水調節弁 ５…復水器冷却用ファン ６，７…制御器 ２１，２２…圧力検出器 ２４…温度検出器 DESCRIPTION OF SYMBOLS 1 ... High-pressure steam condenser 2 ... Steam introduction pipe 3 ... Condenser introduction pipe 4 ... Condenser control valve 5 ... Condenser cooling fan 6, 7 ... Controller 21, 22 ... Pressure detector 24 ... Temperature detector
Claims (1)
差を復水器水位設定値と比較して圧力差が一定となるよ
うに復水器出口側調節弁を制御する第１の制御器し、 複水器内の気相圧力を圧力設定値と比較して気相圧力が
一定となるように復水器冷却用ファンを制御する第２の
制御器と、 からなることを特徴とする空冷式高圧復水器の制御装
置。1. A condenser outlet side control valve is controlled so that a pressure difference between a gas phase pressure and a liquid phase pressure in the condenser is compared with a condenser water level set value so that the pressure difference becomes constant. A first controller that compares the gas phase pressure in the double condenser with a pressure set value and controls the condenser cooling fan so that the gas phase pressure becomes constant. A control device for an air-cooled high-pressure condenser, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8339195A JPH10185458A (en) | 1996-12-19 | 1996-12-19 | Controller for air-cooled high pressure condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8339195A JPH10185458A (en) | 1996-12-19 | 1996-12-19 | Controller for air-cooled high pressure condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10185458A true JPH10185458A (en) | 1998-07-14 |
Family
ID=18325144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8339195A Pending JPH10185458A (en) | 1996-12-19 | 1996-12-19 | Controller for air-cooled high pressure condenser |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10185458A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001055660A1 (en) * | 2000-01-26 | 2001-08-02 | Honda Giken Kogyo Kabushiki Kaisha | Condenser |
| US7117691B2 (en) | 2003-10-02 | 2006-10-10 | Honda Motor Co., Ltd. | Device for controlling liquid level position within condenser in rankine cycle apparatus |
| US7174732B2 (en) | 2003-10-02 | 2007-02-13 | Honda Motor Co., Ltd. | Cooling control device for condenser |
| JP2011085298A (en) * | 2009-10-14 | 2011-04-28 | Hitachi Ltd | Plant system and method for controlling water supply temperature of the same |
| CN114087888A (en) * | 2021-11-29 | 2022-02-25 | 江南造船(集团)有限责任公司 | Method and system for controlling double constant operation of condenser and two-loop system |
-
1996
- 1996-12-19 JP JP8339195A patent/JPH10185458A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001055660A1 (en) * | 2000-01-26 | 2001-08-02 | Honda Giken Kogyo Kabushiki Kaisha | Condenser |
| US6843309B2 (en) | 2000-01-26 | 2005-01-18 | Honda Giken Kogyo Kabushiki Kaisha | Condenser |
| US7117691B2 (en) | 2003-10-02 | 2006-10-10 | Honda Motor Co., Ltd. | Device for controlling liquid level position within condenser in rankine cycle apparatus |
| US7174732B2 (en) | 2003-10-02 | 2007-02-13 | Honda Motor Co., Ltd. | Cooling control device for condenser |
| JP2011085298A (en) * | 2009-10-14 | 2011-04-28 | Hitachi Ltd | Plant system and method for controlling water supply temperature of the same |
| CN114087888A (en) * | 2021-11-29 | 2022-02-25 | 江南造船(集团)有限责任公司 | Method and system for controlling double constant operation of condenser and two-loop system |
| CN114087888B (en) * | 2021-11-29 | 2024-01-12 | 江南造船(集团)有限责任公司 | Condenser double constant operation control method and system and two-loop system |
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