DE19630875A1 - Safety arrangement for a burner - Google Patents

Safety arrangement for a burner

Info

Publication number
DE19630875A1
DE19630875A1 DE19630875A DE19630875A DE19630875A1 DE 19630875 A1 DE19630875 A1 DE 19630875A1 DE 19630875 A DE19630875 A DE 19630875A DE 19630875 A DE19630875 A DE 19630875A DE 19630875 A1 DE19630875 A1 DE 19630875A1
Authority
DE
Germany
Prior art keywords
burner
fuel
test unit
pressure sensor
valves
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.)
Ceased
Application number
DE19630875A
Other languages
German (de)
Inventor
Hartmut Henrich
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.)
Elster Kromschroeder GmbH
Original Assignee
G Kromschroeder AG
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 G Kromschroeder AG filed Critical G Kromschroeder AG
Priority to DE19630875A priority Critical patent/DE19630875A1/en
Priority to DE29724487U priority patent/DE29724487U1/en
Priority to EP97113092A priority patent/EP0822376A3/en
Publication of DE19630875A1 publication Critical patent/DE19630875A1/en
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/04—Measuring pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/18—Detecting fluid leaks

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Feeding And Controlling Fuel (AREA)

Description

Die Erfindung betrifft eine Sicherheitsanordnung für einen Brenner, der an eine Brenn­ stoffleitung angeschlossen ist und der mittels einer Brennersteuerung gesteuert wird, mit zwei hintereinander in der Brennstoffleitung angeordneten Ventilen, die mit Stell­ gliedern versehen sind, einem Drucksensor zum Erfassen des Druckes zwischen den Ventilen, mindestens einer Dichtheit-Prüfeinrichtung, die an den Drucksensor und an die Stellglieder für die Ventile angeschlossen ist und mindestens eine Brennstoff-Prüf­ einheit, die an die Brennersteuerung und an das in Strömungsrichtung stromauf lie­ gende Ventil angeschlossen ist.The invention relates to a safety arrangement for a burner connected to a burner is connected and which is controlled by a burner control, with two valves arranged one behind the other in the fuel line, which are connected to Stell are provided, a pressure sensor for detecting the pressure between the Valves, at least one leak test device connected to the pressure sensor and the actuators for the valves are connected and at least one fuel test unit which is connected to the burner control and to the upstream in the flow direction valve is connected.

Die Dichtheit-Prüfeinheit und die Brennstoff-Prüfeinheit sind Schaltungen, die den An­ forderungen der DIN-Normen an die Fehlersicherheit genügen.The leak test unit and the fuel test unit are circuits that the An requirements of the DIN standards for fail safety are sufficient.

Die Dichtheit-Prüfeinheit dient dazu, den Dichtsitz der beiden Ventile zu prüfen. Ein geeigneter Programmablauf überprüft den Dichtsitz der Ventile mittels der Zeitmessung des Druckabfalls bzw. Anstieges innerhalb bestimmter Prüfzeiten nach kurzzeitigem Öffnen einzelner Ventile und der Errechnung und Überprüfung der maximalen zulässi­ gen Leckrate an diesen Ventilen. Ein derartiges Verfahren ist in der DE 37 08 471 be­ schrieben.The leak test unit is used to check the tightness of the two valves. A A suitable program sequence checks the tightness of the valves by means of time measurement the pressure drop or increase within certain test times after a short period Open individual valves and calculate and check the maximum permissible leak rate at these valves. Such a method is in DE 37 08 471 wrote.

Die Brennstoff-Prüfeinheit dient dazu, in der Brennersteuerung bei einer Wärmeanfor­ derung den Programmablauf zum Start des Brenners erst dann freizugeben, wenn ein Sensor das Vorhandensein von Brennstoff meldet. Außerdem bewirkt die Brennstoff- Prüfeinheit eine Abschaltung des Brenners, wenn während des Betriebes das Signal des Sensors ausfällt. Bei Wiedervorhandensein des Brennstoffes wird ein automati­ sches Wiederanlaufen des Brenners ermöglicht. Außerdem wird bei nicht ausreichen­ dem Brennstoffdruck eine dann mögliche schadstoffreiche Verbrennung verhindert.The fuel test unit is used in the burner control when there is a heat request change the program sequence at the start of the burner only when a Sensor reports the presence of fuel. In addition, the fuel Test unit shuts down the burner if the signal during operation of the sensor fails. If the fuel is present, an automatic enables the burner to restart. In addition, will not be enough the fuel pressure prevents possible pollutant-rich combustion.

Bei den bisher bekannten Brennstoffmangel-Prüfverfahren ist es üblich, der Brennstoff- Prüfeinheit einen gesonderten Drucksensor zuzuordnen, der stromauf der Ventile an­ geordnet ist. Dies bedingte einen erheblichen apparativen Aufwand, verbunden mit ei­ nem erhöhten Verdrahtungsaufwand, wodurch zusätzliche Kosten entstehen.In the previously known fuel shortage test methods, it is common to use the fuel Test unit to assign a separate pressure sensor that upstream of the valves is ordered. This required a considerable amount of equipment, associated with egg nem increased wiring effort, which creates additional costs.

Der Erfindung liegt daher die Aufgabe zugrunde, eine einfachere und kostengünstigere Sicherheitsanordnung zu schaffen. The invention is therefore based on the object of simpler and less expensive To create security arrangement.  

Zur Lösung dieser Aufgabe ist die eingangs genannte Sicherheitsanordnung erfin­ dungsgemäß dadurch gekennzeichnet, daß die Brennstoff-Prüfeinheit an den Druck­ sensor der Dichtheits-Prüfeinheit angeschlossen ist.The safety arrangement mentioned at the beginning is invented to solve this problem appropriately characterized in that the fuel test unit to the pressure sensor of the leak test unit is connected.

Das Ausgangssignal des Drucksensors wird also mehrfach ausgenutzt, indem es nicht nur für die Dichtheit-Prüfeinheit, sondern auch für die Brennstoff-Prüfeinheit genutzt wird, wobei die diesbezüglichen Anforderungen der DIN-Normen erfüllt werden.The output signal of the pressure sensor is therefore used several times by not only used for the leak test unit, but also for the fuel test unit the relevant requirements of the DIN standards are met.

Der Verzicht auf mindestens einen zusätzlichen Drucksensor und den zugehörigen Verdrahtungsaufwand führt zu einer beträchtlichen Kostensenkung.Dispensing with at least one additional pressure sensor and the associated one Wiring costs lead to a considerable reduction in costs.

Die Erfindung wird im folgenden anhand eines bevorzugten Ausführungsbeispiels im Zusammenhang mit der beiliegenden Zeichnung näher erläutert. Die Zeichnung zeigt in schematischer Darstellung die Sicherheitsanordnung.The invention is described below with reference to a preferred embodiment Connection with the accompanying drawing explained. The drawing shows the safety arrangement in a schematic representation.

Eine Brenngasleitung 1 führt zu einem Gasbrenner 2, der von einer Brennersteue­ rung 3 gesteuert wird. Aus Sicherheitsgründen sind in der Brenngasleitung hinterein­ ander zwei Ventile 4 angeordnet, die jeweils ein Stellglied 5 aufweisen. Zwischen den beiden Ventilen 4 befindet sich ein Drucksensor 6, der den Druck in der Brenngaslei­ tung 1 erfaßt.A fuel gas line 1 leads to a gas burner 2 , which is controlled by a burner control system 3 . For safety reasons, two valves 4 are arranged one behind the other in the fuel gas line, each having an actuator 5 . Between the two valves 4 there is a pressure sensor 6 which detects the pressure in the fuel gas line 1 .

Der Drucksensor 6 ist mit einer Dicht-Prüfeinheit 7 verbunden, die wiederum an die Stellglieder 5 für die Ventile 4 angeschlossen ist.The pressure sensor 6 is connected to a sealing test unit 7 , which in turn is connected to the actuators 5 for the valves 4 .

Die Sicherheitsanordnung umfaßt ferner eine Brennstoff-Prüfeinheit 8, die an die Bren­ nersteuerung 3 sowie an den Drucksensor 6 angeschlossen ist.The safety arrangement further comprises a fuel test unit 8 , which is connected to the burner control unit 3 and to the pressure sensor 6 .

Das Signal des Drucksensors 6 wird also mehrfach ausgenutzt, und zwar bei verschie­ denen Betriebszuständen.The signal of the pressure sensor 6 is thus used several times, in different operating conditions.

Beim Start des Brenners 2 wird zunächst das Vorhandensein von Brennstoff geprüft. Falls der Drucksensor 6 schon ein Signal meldet, wird in der Brennersteuerung 3 ein Inbetriebsetzungsprogramm fortgesetzt. Falls der Drucksensor 6 kein Signal meldet, wird das eingangsseitige Ventil 4 für eine kurze Zeit geöffnet, um den Brennstoffdruck an den Sensor zu leiten. Falls der Drucksensor 6 immer noch kein Signal meldet, wird das eingangsseitige Ventil 4 wieder geschlossen und die elektrische Brennersteuerung startet eine geeignete Zeitverzögerung, um diesen Programmschnitt nach Ablauf dieser Zeit zyklisch zu wiederholen. When the burner 2 starts, the presence of fuel is first checked. If the pressure sensor 6 already reports a signal, a commissioning program is continued in the burner control unit 3 . If the pressure sensor 6 does not report a signal, the inlet-side valve 4 is opened for a short time in order to direct the fuel pressure to the sensor. If the pressure sensor 6 still does not report a signal, the valve 4 on the input side is closed again and the electrical burner control starts a suitable time delay in order to repeat this program section cyclically after this time has expired.

Fällt im laufenden Brennerbetrieb das Signal des Drucksensors 6 aus, schaltet die Brennstoff-Prüfeinheit 8 den Brenner 2 sofort aus. Danach läuft das Verfahren wie un­ ter Brennerstart beschrieben ab.If the signal from the pressure sensor 6 fails during burner operation, the fuel test unit 8 switches the burner 2 off immediately. The procedure then proceeds as described under burner start.

Die Dichtheit-Prüfeinheit 8 kann nach der Brennstoffmangelüberprüfung vor dem Bren­ nerstart oder auch nach dem Brennerlauf in Funktion gesetzt werden.The tightness test unit 8 can be started after the fuel shortage check before starting the burner or after the burner run.

Im Rahmen der Erfindung sind durchaus Abwandlungsmöglichkeiten gegeben. So kann der Drucksensor auch als Druckwächter ausgebildet sein. Die Steuerung des Gas­ brenners sowie die Prüfungen auf Dichtheit und auf Vorhandensein von Brennstoff kann von einer einzigen Steuereinheit in Form eines Mikroprozessors mit den dazuge­ hörigen Schaltkreisen durchgeführt werden.In the context of the invention, there are quite a number of possible modifications. So can the pressure sensor can also be designed as a pressure switch. Control of the gas burner and the tests for leaks and for the presence of fuel can be from a single control unit in the form of a microprocessor with the circuitry.

Claims (2)

Sicherheitsanordnung für einen Brenner (2), der an eine Brennstoffleitung (1) angeschlossen ist und der mittels einer Brennersteuerung (3) gesteuert wird, mit
  • - zwei hintereinander in der Brennstoffleitung angeordneten Ventilen (4), die mit Stellgliedern (5) versehen sind,
  • - einem Drucksensor (6) zum Erfassen des Druckes zwischen den Venti­ len (4),
  • - mindestens einer Dichtheit-Prüfeinheit (7), die an den Drucksensor und an die Stellglieder für die Ventile angeschlossen ist und
  • - mindestens eine Brennstoff-Prüfeinheit (8), die an die Brennersteue­ rung (3) und an das in Strömungsrichtung stromauf liegende Ventil ange­ schlossen ist,
Safety arrangement for a burner ( 2 ) which is connected to a fuel line ( 1 ) and which is controlled by means of a burner control ( 3 )
  • two valves ( 4 ) arranged one behind the other in the fuel line and provided with actuators ( 5 ),
  • - A pressure sensor ( 6 ) for detecting the pressure between the valves len ( 4 ),
  • - At least one leak test unit ( 7 ) which is connected to the pressure sensor and to the actuators for the valves and
  • - At least one fuel test unit ( 8 ), which is connected to the burner control unit ( 3 ) and to the upstream valve in the flow direction,
dadurch gekennzeichnet, daß die Brennstoff-Prüfeinheit (8) an den Drucksensor (6) der Dichtheits-Prüf­ einheit (7) angeschlossen ist. characterized in that the fuel test unit ( 8 ) is connected to the pressure sensor ( 6 ) of the leak test unit ( 7 ).
DE19630875A 1996-07-31 1996-07-31 Safety arrangement for a burner Ceased DE19630875A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19630875A DE19630875A1 (en) 1996-07-31 1996-07-31 Safety arrangement for a burner
DE29724487U DE29724487U1 (en) 1996-07-31 1997-07-30 Safety arrangement for a burner
EP97113092A EP0822376A3 (en) 1996-07-31 1997-07-30 Safety device for a burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19630875A DE19630875A1 (en) 1996-07-31 1996-07-31 Safety arrangement for a burner

Publications (1)

Publication Number Publication Date
DE19630875A1 true DE19630875A1 (en) 1998-02-05

Family

ID=7801362

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19630875A Ceased DE19630875A1 (en) 1996-07-31 1996-07-31 Safety arrangement for a burner

Country Status (2)

Country Link
EP (1) EP0822376A3 (en)
DE (1) DE19630875A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19819339A1 (en) * 1998-04-30 1999-12-09 Lactec Gmbh Method for leak-testing valve in color changer, for series processing of different types of varnishes
DE19831067A1 (en) * 1998-07-10 2000-01-20 Honeywell Bv Procedure for leak testing of gas valves
DE19905667A1 (en) * 1999-02-11 2000-09-07 Abb Patent Gmbh Tightness test of gas lines testing by flushing over monitored line section by test gas over bypass and measuring pressure drop measurement and then closing bypass again and reconnecting back that partial line section
EP2476955A2 (en) 2011-01-13 2012-07-18 Karl Dungs GmbH & Co.KG Valve combination with improved test routine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005033611B3 (en) * 2005-07-14 2006-10-19 Honeywell Technologies S.A.R.L. Safe control of gas burner operation, blocks ignition when leakage is detected at a point between control valve and safety shut-off valve
US9851103B2 (en) 2011-12-15 2017-12-26 Honeywell International Inc. Gas valve with overpressure diagnostics
US9835265B2 (en) 2011-12-15 2017-12-05 Honeywell International Inc. Valve with actuator diagnostics
US9846440B2 (en) 2011-12-15 2017-12-19 Honeywell International Inc. Valve controller configured to estimate fuel comsumption
US8947242B2 (en) 2011-12-15 2015-02-03 Honeywell International Inc. Gas valve with valve leakage test
US9074770B2 (en) 2011-12-15 2015-07-07 Honeywell International Inc. Gas valve with electronic valve proving system
US8905063B2 (en) 2011-12-15 2014-12-09 Honeywell International Inc. Gas valve with fuel rate monitor
US8899264B2 (en) 2011-12-15 2014-12-02 Honeywell International Inc. Gas valve with electronic proof of closure system
US9995486B2 (en) 2011-12-15 2018-06-12 Honeywell International Inc. Gas valve with high/low gas pressure detection
US9557059B2 (en) 2011-12-15 2017-01-31 Honeywell International Inc Gas valve with communication link
US8839815B2 (en) 2011-12-15 2014-09-23 Honeywell International Inc. Gas valve with electronic cycle counter
US10422531B2 (en) 2012-09-15 2019-09-24 Honeywell International Inc. System and approach for controlling a combustion chamber
US9234661B2 (en) 2012-09-15 2016-01-12 Honeywell International Inc. Burner control system
JP6120540B2 (en) * 2012-11-30 2017-04-26 アズビル株式会社 Valve leak detection method and combustion equipment
EP2868970B1 (en) 2013-10-29 2020-04-22 Honeywell Technologies Sarl Regulating device
US10024439B2 (en) 2013-12-16 2018-07-17 Honeywell International Inc. Valve over-travel mechanism
US9841122B2 (en) 2014-09-09 2017-12-12 Honeywell International Inc. Gas valve with electronic valve proving system
US9645584B2 (en) 2014-09-17 2017-05-09 Honeywell International Inc. Gas valve with electronic health monitoring
US10503181B2 (en) 2016-01-13 2019-12-10 Honeywell International Inc. Pressure regulator
US10564062B2 (en) 2016-10-19 2020-02-18 Honeywell International Inc. Human-machine interface for gas valve
US11073281B2 (en) 2017-12-29 2021-07-27 Honeywell International Inc. Closed-loop programming and control of a combustion appliance
US10697815B2 (en) 2018-06-09 2020-06-30 Honeywell International Inc. System and methods for mitigating condensation in a sensor module

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DE1930875A1 (en) * 1968-06-18 1970-10-15 Steirische Gussstahlwerke feather
DE3445281A1 (en) * 1984-12-12 1986-06-19 Klöckner-Humboldt-Deutz AG, 5000 Köln METHOD AND DEVICE FOR TIGHTNESS TESTING TWO SHUT-OFF VALVES IN A GAS-FLOWED PIPE
DE4425225A1 (en) * 1994-07-16 1996-01-18 Dungs Karl Gmbh & Co Valve sealing integrity testing device
DE4211681C2 (en) * 1991-04-09 1996-06-05 Kawasaki Heavy Ind Ltd Method for controlling the burning of a fuel gas

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GB2099158B (en) * 1981-04-14 1985-02-27 Stelrad Group Ltd Gas flow control apparatus
US4706881A (en) * 1985-11-26 1987-11-17 Carrier Corporation Self-correcting microprocessor control system and method for a furnace
DE3708471A1 (en) 1987-03-16 1988-09-29 Kromschroeder Ag G METHOD AND DEVICE FOR TIGHTNESS CONTROL OF TWO VALVES ARRANGED IN A FLUID PIPE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1930875A1 (en) * 1968-06-18 1970-10-15 Steirische Gussstahlwerke feather
DE3445281A1 (en) * 1984-12-12 1986-06-19 Klöckner-Humboldt-Deutz AG, 5000 Köln METHOD AND DEVICE FOR TIGHTNESS TESTING TWO SHUT-OFF VALVES IN A GAS-FLOWED PIPE
DE4211681C2 (en) * 1991-04-09 1996-06-05 Kawasaki Heavy Ind Ltd Method for controlling the burning of a fuel gas
DE4425225A1 (en) * 1994-07-16 1996-01-18 Dungs Karl Gmbh & Co Valve sealing integrity testing device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Dichtkontrolle aller gasführenden Teile bei einer Flammen-Sicherung der Fa. Georg Hegwein, Stuttgart *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19819339A1 (en) * 1998-04-30 1999-12-09 Lactec Gmbh Method for leak-testing valve in color changer, for series processing of different types of varnishes
DE19831067A1 (en) * 1998-07-10 2000-01-20 Honeywell Bv Procedure for leak testing of gas valves
DE19831067C2 (en) * 1998-07-10 2000-05-31 Honeywell Bv Procedure for leak testing of gas valves
DE19905667A1 (en) * 1999-02-11 2000-09-07 Abb Patent Gmbh Tightness test of gas lines testing by flushing over monitored line section by test gas over bypass and measuring pressure drop measurement and then closing bypass again and reconnecting back that partial line section
EP2476955A2 (en) 2011-01-13 2012-07-18 Karl Dungs GmbH & Co.KG Valve combination with improved test routine
DE102011000113A1 (en) 2011-01-13 2012-07-19 Karl Dungs Gmbh & Co. Kg Valve combination with improved test routine

Also Published As

Publication number Publication date
EP0822376A3 (en) 1999-02-24
EP0822376A2 (en) 1998-02-04

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