DE478957C - Device for automatic regulation of the fuel supply in furnaces, especially for steam boiler systems - Google Patents
Device for automatic regulation of the fuel supply in furnaces, especially for steam boiler systemsInfo
- Publication number
- DE478957C DE478957C DES80674D DES0080674D DE478957C DE 478957 C DE478957 C DE 478957C DE S80674 D DES80674 D DE S80674D DE S0080674 D DES0080674 D DE S0080674D DE 478957 C DE478957 C DE 478957C
- Authority
- DE
- Germany
- Prior art keywords
- furnaces
- fuel supply
- steam boiler
- boiler systems
- automatic regulation
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Screw Conveyors (AREA)
Description
Einrichtung zur 'selpsttätigen Regelung der Brennstoffzufuhr bei Feuerungen, insbesondere für Dampfkesselanlagen Es sind Einrichtungen bekannt, bei denen die der Feuerung eines Dampfkessels zugeführte Brennstoffmenge (Kohle, Kohlenstaub usw.) selbsttätig in Abhängigkeit von der Kesselbelastung gesteuert wird. Für hydraulische Regelung hat man z. B. eine von der Dampfmenge einstellbare Membran durch eine zweite Membran ausgewogen, die von einem Ventilator aus beeinflußt wird. Dieser Ventilator ist bei Kohlenstaubfeuerungen mit der Zuführungsschnecke verbunden und bei Kohlefeuerungen unter Anwendung von Wanderrosten mit dem Antriebsmotor des Wanderrostes gekuppelt. Bei elektrischen Regelanordnungen ist vorgeschlagen worden, - eine sogenannte Tourendynamomaschine statt des Ventilators zu verwenden. Die von der Tourendynamomaschine erzeugte Spannung,- die von der Drehzahl abhängig ist, wird dabei kompensiert mit einer anderen Spannung, die durch Regelung eines Widerstandes in Abhängigkeit von einem Dampfmengen- oder Dampfdruckmesser erzeugt wird. Ein Nachteil der erwähnten elektrischen Regelung besteht darin, daß diese durch Spannungsschwankungen in der Stromversorgung beeinflußbar ist.Device for the automatic regulation of the fuel supply in furnaces, in particular for steam boiler systems There are facilities known in which the Amount of fuel supplied to the furnace of a steam boiler (coal, coal dust, etc.) is controlled automatically depending on the boiler load. For hydraulic One has z. B. a membrane adjustable by the amount of steam through a second Membrane balanced, which is influenced by a fan. This fan is connected to the feed screw in the case of pulverized coal furnaces and in the case of coal furnaces coupled using traveling grids with the drive motor of the traveling grate. In electrical control arrangements it has been proposed - a so-called touring dynamo machine instead of using the fan. The tension generated by the touring dynamo machine, which depends on the speed is compensated with a different voltage, by regulating a resistance as a function of a steam quantity or Steam pressure meter is generated. A disadvantage of the aforementioned electrical regulation is that this can be influenced by voltage fluctuations in the power supply is.
Nach der Erfindung wird deshalb durch die Meßeinrichtung zur Bestimmung der Fördergeschwindigkeit der Beschickungsvorrichtung selbsttätig ein elektrischer, als Rückmeldeglied dienender Widerstand geregelt, der in den einen Zweig der von der Kesselbelastung beeinflußten, die Beschickungsvorrichtung steuernden Wheatstoneschen Brücke eingeschaltet ist.According to the invention, therefore, is determined by the measuring device the conveying speed of the loading device automatically an electrical, Resistance that serves as a feedback element is regulated in one branch of the the boiler loading influenced the Wheatstone ash that controls the charging device Bridge is on.
In der- Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Ein an die Dampfsammelleitung angeschlossenes Kolbenmeßgerät i verstellt in bekannter Weise über ein Getriebe 2 einen Regelwiderstand 3, der in einer Brückenschaltung q. liegt. Das in dem mittleren Zweig der Brücke liegende Relais 5 steuert einen Motor 6, der die Förderschnecke 7 antreibt. Diese führt den Brennstoff aus dem Kohlenbunker 8 in das Rohr 9, das zu den Brennern führt.In the drawing, an embodiment of the invention is shown. A piston measuring device i connected to the steam manifold adjusts in a known manner Way via a transmission 2 a variable resistor 3, which is in a bridge circuit q. lies. The relay 5 located in the middle branch of the bridge controls one Motor 6 that drives the screw conveyor 7. This leads the fuel from the coal bunker 8 into the pipe 9 that leads to the burners.
Die Beeinflussung des Motors 6 durch das Gerät 5 erfolgt beispielsweise mittels eines Umschaltrelais 15, das einen Hilfsmotor 16 für Rechts- un4l Linkslauf steuert. Der Hilfsmotör 16 regelt dementsprechend einen Widerstand 17, der in dem Strombeis der Feldwicklung 18 des Motors 6 liegt.The motor 6 is influenced by the device 5, for example by means of a changeover relay 15, which has an auxiliary motor 16 for clockwise and counterclockwise rotation controls. The auxiliary motor 16 accordingly regulates a resistor 17, which is in the Strombeis the field winding 18 of the motor 6 is located.
Gemäß der Erfindung stellt nun die Förderschnecke 7 über beliebige mechanische Glieder io eine Meßvorrichtung 1i - ein, die beispielsweise nach Art eines Zentrifugalregulators gebaut ist. Der Zeiger 12 der Vorrichtung spielt über einer Skala 13 und regelt gleichzeitig einen elektrischen Widerstand 1q., der der Brückenschältung q. angehört. Die Regelung des Widerstandes 14 erfolgt so lange, bis das durch die Wirkung des Kolbenmeßgerätes gestörte Gleichgewicht in der Brücke wiederhergestellt ist.According to the invention, the screw conveyor 7 now provides any mechanical links io a measuring device 1i - a, for example, according to Art a centrifugal regulator is built. The pointer 12 of the device plays over A scale 13 and at the same time controls an electrical resistance 1q., which the Bridge peeling q. listened to. The regulation of the resistor 14 takes place as long as until the balance in the bridge, which is disturbed by the action of the piston measuring device is restored.
Als Regelwiderstände 3 und 1q. werden zweckmäßig sogenannte Quecksilberrohrwiderstände verwendet. Diese enthalten einen Widerstandsdraht, der in einen Hohlring aus Isolierstoff eingesetzt ist. Außerdem enthält der Hohlring; der drehbar gelagert ist, noch eine Quecksilbermenge.As variable resistors 3 and 1q. so-called mercury tube resistors are expedient used. These contain a resistance wire that is inserted into a hollow ring made of insulating material is used. In addition, the hollow ring contains; which is rotatably mounted, another one Amount of mercury.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES80674D DE478957C (en) | Device for automatic regulation of the fuel supply in furnaces, especially for steam boiler systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES80674D DE478957C (en) | Device for automatic regulation of the fuel supply in furnaces, especially for steam boiler systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE478957C true DE478957C (en) | 1929-07-05 |
Family
ID=7509033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES80674D Expired DE478957C (en) | Device for automatic regulation of the fuel supply in furnaces, especially for steam boiler systems |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE478957C (en) |
-
0
- DE DES80674D patent/DE478957C/en not_active Expired
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