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DE1106336B - Device for regulating the live steam temperature of steam generators - Google Patents

Device for regulating the live steam temperature of steam generators

Info

Publication number
DE1106336B
DE1106336B DES62055A DES0062055A DE1106336B DE 1106336 B DE1106336 B DE 1106336B DE S62055 A DES62055 A DE S62055A DE S0062055 A DES0062055 A DE S0062055A DE 1106336 B DE1106336 B DE 1106336B
Authority
DE
Germany
Prior art keywords
steam
variable
controller
regulating
load
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
Application number
DES62055A
Other languages
German (de)
Inventor
Dipl-Ing Herbert Zwetz
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.)
Siemens Corp
Original Assignee
Siemens Corp
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 Siemens Corp filed Critical Siemens Corp
Priority to DES62055A priority Critical patent/DE1106336B/en
Publication of DE1106336B publication Critical patent/DE1106336B/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G5/00—Controlling superheat temperature
    • F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Description

Einrichtung zur Regelung der Frischdampftemperatur von Dampferzeugern Es ist bereits eine Einrichtung zur Regelung der Frischdampftemperatur von Dampferzeugern mit stark schwankender Belastung mittels Wassereinspritzung vor dem Endüberhitzer oder innerhalb desselben vorgeschlagen worden, bei der der Regler abhängig von der Dampfmenge - oder einer anderen der Last proportionalen Größe - selbsttätig verstellbar ist, um das durch seine Kenngrößen gebildete Zeitverhalten dem sich lastabhängig ändernden Zeitverhalten der Regelstrecke anzupassen. Bei Verwendung eines PI-Reglers (Proportional-integral wirkender Regler) wird dabei vorzugsweise seine Nachstellzeit beeinflußt.Device for regulating the live steam temperature of steam generators It is already a device for regulating the live steam temperature of steam generators with strongly fluctuating load by means of water injection upstream of the final superheater or within the same has been proposed in which the controller depends on the The amount of steam - or another variable proportional to the load - can be adjusted automatically is to the time behavior formed by its parameters which depends on the load to adapt to changing time behavior of the controlled system. When using a PI controller (Proportional-integral acting controller) is preferably its reset time influenced.

Die Erfindung macht von diesem Regelprinzip Gebrauch und besteht darüber hinaus darin, daß zur Regelung der Frischdampftemperatur ein PI-Regler mit getrenntem P- und I-Anteil verwendet wird. Zur Veränderung der Nachstellzeit kann die Eingangsgröße des I-Anteiles verstellt werden. Wenn man die Nachstellzeit verlängern will, so kann man dies dadurch erreichen, daß man die Eingangsgröße des 1-Anteiles verkleinert. Bei Bildung der Eingangsgröße durch eine elektrische Größe kann eine veränderliche Spannungsteileranordnung vorgesehen sein.The invention makes use of this control principle and exists above it in addition, that a PI controller with separate to regulate the live steam temperature P and I component is used. To change the reset time, the input variable of the I component can be adjusted. If you want to extend the reset time, so this can be achieved by reducing the input variable of the 1-component. When the input variable is formed by an electrical variable, a variable Voltage divider arrangement may be provided.

Die Zeichnung stellt ein Ausführungsbeispiel des Gegenstandes der Erfindung dar.The drawing represents an embodiment of the subject matter of Invention.

Der Temperaturimpuls wird von der Frischdampfleitung 9 durch eine Temperaturmeßeinrichtung 8 gewonnen und dieser Meßwert dem Regler 7 zugeleitet. Der Regler 7 beeinflußt über ein Stellglied 6 das Einspritzventil 5.The temperature pulse is from the main steam line 9 through a Temperature measuring device 8 obtained and this measured value fed to the controller 7. The controller 7 influences the injection valve 5 via an actuator 6.

Der Regler 7 ist als PI-Regler ausgebildet und weist einen getrennten P-Anteil P und I-Anteil I auf. Wenn man die Eingangsgröße des I-Teiles halbiert, ergibt sich eine Verdoppelung der Nachstellzeit. Diese Beeinflussung wird mit Hilfe eines Potentiometers 17 vorgenommen, welches die elektrische Eingangsgröße für den I-Anteil zu verändern gestattet. Das Potentiometer 17 kann als Reihenschaltung eines unveränderlichen Vorwiderstandes mit einem veränderlichen Widerstand aufgebaut sein. Ein derartiger, beispielsweise als Ringrohrwiderstand ausgebildeter Widerstand wird durch die Dampfmenge bzw. den Dampfdruck beeinflußt. Eine Meßeinrichtung 14 kann den Widerstand verstellen.The controller 7 is designed as a PI controller and has a separate one P component P and I component I. If you halve the input size of the I part, the reset time doubles. This influencing is with the help a potentiometer 17 made, which is the electrical input for the I-part can be changed. The potentiometer 17 can be a series connection unchangeable series resistor be constructed with a variable resistance. Such a resistor, designed for example as a ring tube resistor, becomes influenced by the amount of steam or the steam pressure. A measuring device 14 can adjust the resistance.

Claims (3)

PATENTANSPRÜCHE: 1. Einrichtung zur Regelung der Frischdampftemperatur von Dampferzeugern mit stark schwankender Belastung mittels Wassereinspritzung vor dem Endüberhitzer oder innerhalb desselben, bei welcher der Regler abhängig von der Dampfmenge - oder einer anderen der Last proportionalen Größe - selbsttätig verstellbar ist, um das durch seine Kenngrößen gebildete Zeitverhalten dem sich lastabhängig ändernden Zeitverhalten der Regelstrecke anzupassen, und bei der durch Verstellung eines PI-Reglers dessen Nachstellzeit beeinflußt wird, gekennzeichnet durch einen PI-Regler mit getrenntem P- und I-Anteil. PATENT CLAIMS: 1. Device for regulating the live steam temperature of steam generators with strongly fluctuating loads by means of water injection the final superheater or within the same, in which the controller depends on the amount of steam - or another variable proportional to the load - automatically is adjustable to the time behavior formed by its parameters adapt the time behavior of the controlled system that changes depending on the load, and with the through Adjustment of a PI controller whose reset time is influenced by a PI controller with separate P and I components. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zur Veränderung der Nachstellzeit die Eingangsgröße des I-Anteiles verstellt wird. 2. Device according to claim 1, characterized in that the input variable to change the reset time of the I component is adjusted. 3. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß bei Bildung der Eingangsgröße durch eine elektrische Größe eine veränderliche Spannungsteileranordnung vorgesehen ist.3. Device according to claim 2, characterized in that that when the input variable is formed by an electrical variable, a variable one Voltage divider arrangement is provided.
DES62055A 1959-03-07 1959-03-07 Device for regulating the live steam temperature of steam generators Pending DE1106336B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES62055A DE1106336B (en) 1959-03-07 1959-03-07 Device for regulating the live steam temperature of steam generators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES62055A DE1106336B (en) 1959-03-07 1959-03-07 Device for regulating the live steam temperature of steam generators

Publications (1)

Publication Number Publication Date
DE1106336B true DE1106336B (en) 1961-05-10

Family

ID=7495314

Family Applications (1)

Application Number Title Priority Date Filing Date
DES62055A Pending DE1106336B (en) 1959-03-07 1959-03-07 Device for regulating the live steam temperature of steam generators

Country Status (1)

Country Link
DE (1) DE1106336B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1164426B (en) * 1962-11-24 1964-03-05 Continental Elektro Ind Ag Device for steam temperature control
DE1172274B (en) * 1963-04-20 1964-06-18 Continental Elektro Ind Ag Device for steam temperature control on superheaters of steam generators

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1164426B (en) * 1962-11-24 1964-03-05 Continental Elektro Ind Ag Device for steam temperature control
DE1172274B (en) * 1963-04-20 1964-06-18 Continental Elektro Ind Ag Device for steam temperature control on superheaters of steam generators

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