EP0622586A1 - Procédé de fonctionnement d'un pipe-line - Google Patents

Procédé de fonctionnement d'un pipe-line Download PDF

Info

Publication number: EP0622586A1
Authority: EP; European Patent Office
Prior art keywords: flow; actuator; bypass line; flow resistance; pipeline
Prior art date: 1993-04-30
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.): Granted

Application number

EP94106367A

Other languages

German (de)

English (en)

Other versions

EP0622586B1 (fr

Inventor

Velimir Bakran

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.)

ABB Patent GmbH

Original Assignee

ABB Patent GmbH

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.)

1993-04-30

Filing date

1994-04-23

Publication date

1994-11-02

1994-04-23 Application filed by ABB Patent GmbH filed Critical ABB Patent GmbH

1994-11-02 Publication of EP0622586A1 publication Critical patent/EP0622586A1/fr

1998-09-09 Application granted granted Critical

1998-09-09 Publication of EP0622586B1 publication Critical patent/EP0622586B1/fr

2014-04-23 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/003—Feed-water heater systems

Definitions

the invention relates to a method for operating a pipeline for flowing media, preferably for water, deionized water or condensate, which media, at least in the partial flow, is arranged in the pipeline and provided with a bypass line, for. B. heat exchanger, flow, and a device for performing the method.
the problem described above can also occur if, due to an accident-related interruption of the volume flow, for. B. due to pump failure or malfunction of a pipe shut-off in the previous pipe section, the promotion of the medium temporarily fails.
the medium located in the heat exchanger may have evaporated for the reasons described above, with the result that the vapor bubbles in the heat exchanger make the flow resistance so great that the flow comes to a standstill.
the flow resistance of the arrangement of the heat exchanger with bypass line in the pipeline is lower. It can happen that a circuit arrangement that operates stably at a high total current is now unstable, i. H. that the effects described above occur.
the characterizing features of claim 1 serve to achieve the object. According to this, it is provided that a change in the division of the partial flows takes place when the reduction in the total volume flow of the medium, eg. B. at partial load, to an increase in flow resistance leads in the apparatus.
the flow resistance in the bypass line can be variably adjusted so that it is always the same as the flow resistance of the apparatus. This ensures that the apparatus is sufficiently supplied with flow medium so that undesirable partial or full evaporation, which increases the flow resistance of the apparatus, is avoided or at least overcome.
the partial flow through the bypass line is interrupted as soon as an increased flow resistance occurs in the apparatus.
This variant requires only a small amount of circuitry, measurement and control technology and is therefore simple and inexpensive to implement.
a pipe for carrying out the method mentioned at the outset has an apparatus, preferably a heat exchanger, which is provided with a bypass line in which an orifice is arranged.
a solution to the problem underlying the invention is characterized according to the invention by the features of the characterizing part of claim 4. Thereafter it is provided that an actuator is arranged in the bypass line in addition or instead of the diaphragm.
the actuator is designed as a control valve. This allows a continuous adjustment of the flow cross section of the bypass line and thus its flow resistance.
the actuator it can be expedient to design the actuator as a gate valve.
the actuator in a further embodiment of the invention, it can be advantageous to design the actuator as being operable by hand.
a preferred embodiment of the invention provides that the actuator can be operated remotely.
the actuator is provided with an actuator which can be manually operated remotely as required or is integrated into a measuring and control system which operates it.
the sole figure shows a circuit arrangement according to the invention.
a circuit arrangement 10 which has a pipeline 12, in which an apparatus 14 designed as a heat exchanger is arranged, which is provided with a bypass line 16.
an actuator 18 is arranged according to the invention, which is shown in the example shown as a motor-operated shut-off valve and can be designed as a slide valve, throttle valve or control valve in concrete use.
the total volume flow is divided according to the setting of actuator 18 in the same ratio as in full load. This can lead to instabilities in the flow, since the apparatus 14 used to heat the flowing medium is initially fed unchanged with heating medium, the amount of heat of which, however, is matched to the volume flow flowing through at full load. Because of this excess supply of heat, the flowing medium in the apparatus 14 heats up rapidly and ultimately evaporates.
the vapor bubbles located in the heat exchanger tubes of the apparatus 14 form a resistance to the flow or closure which is greatly increased compared to normal operation, so that the flowing medium can come to a standstill as long as the bypass line 16 is open, the flow resistance of which in this case is lower than that
the invention begins by increasing the flow resistance in the bypass line by adjusting the actuator 18 to such an extent that it exceeds the flow resistance in the apparatus 14 so that the current flow pressure drives out the vapor bubbles in the apparatus 14 and trouble-free part-load operation is possible. To ensure the latter, it may be necessary to change the setting of the actuator 18 again.
the procedure according to the invention is also used here in that the flow resistance in the bypass line 16 is increased by changing the setting of the actuator 18 to such an extent that it exceeds the flow resistance prevailing in the apparatus 14 due to the formation of vapor bubbles. It is hereby achieved that the flowing medium now displaces the vapor bubbles from the apparatus 14 due to the pressure present and thereby brings its flow resistance back to the initial value. As soon as this has happened, the setting value of the actuator 18 is changed again and set to these operating conditions.

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Thermal Sciences (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Pipeline Systems (AREA)
Flow Control (AREA)
Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Air Transport Of Granular Materials (AREA)
Treatment Of Water By Ion Exchange (AREA)

EP94106367A 1993-04-30 1994-04-23 Procédé de fonctionnement d'une conduite et dispositif pour effectuer le procédé Expired - Lifetime EP0622586B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4314390A DE4314390C2 (de)	1993-04-30	1993-04-30	Verfahren zum Betreiben eines hydraulischen Systems
DE4314390		1993-04-30

Publications (2)

Publication Number	Publication Date
EP0622586A1 true EP0622586A1 (fr)	1994-11-02
EP0622586B1 EP0622586B1 (fr)	1998-09-09

Family

ID=6486902

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP94106367A Expired - Lifetime EP0622586B1 (fr)	1993-04-30	1994-04-23	Procédé de fonctionnement d'une conduite et dispositif pour effectuer le procédé

Country Status (3)

Country	Link
EP (1)	EP0622586B1 (fr)
AT (1)	ATE170966T1 (fr)
DE (2)	DE4314390C2 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE498511C (de) *	1928-04-13	1930-06-02	Escher Wyss Maschf Ag	Sicherheitsvorrichtung fuer Waermeaustauschvorrichtungen
US2823650A (en) *	1951-02-06	1958-02-18	Svenska Maskinverken Ab	Method and means for heat exchange between flowing media, preferably for remote heating systems
DE1117602B (de) *	1958-05-12	1961-11-23	Sulzer Ag	Anordnung zur Speisewasservorwaermung mittels Dampf
DE1163866B (de) *	1960-12-03	1964-02-27	Sempell Rhein Armaturen	Waermeaustauscher-Absicherung durch Schnellschlussventile
FR2551181A1 (fr) *	1983-08-26	1985-03-01	Gen Electric	Centrale a cycle mixte et deux combustibles
US4653524A (en) *	1985-12-16	1987-03-31	Wilson Warren M	Control valve assembly
DE4031207A1 (de) *	1990-10-04	1992-04-09	Grohe Armaturen Friedrich	Wassermischventil

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1985808U (de) *	1968-03-01	1968-05-22	Fischer Ag Georg	Drosselstueck fuer rohrleitungen, insbesondere leitungsverzweigungen.
DE6812627U (de) *	1968-12-20	1969-04-24	Moehrlin Ges Mit Berschraenkte	Rohrstueck mit drosselstelle zum einbau in fluessigkeitsdurchstroemte leitungen
DE2244314A1 (de) *	1972-09-09	1974-03-14	Alexei Dipl Ing Andjulovici	Einrichtung zum konstanthalten des hydraulischen widerstandes in einem fluessigkeitsnetz
DE3539621A1 (de) *	1985-04-03	1986-10-16	Heinz 2300 Kiel Behrens	Zweiwegregelung eines gasfoermigen mediums in rohrleitungen mit einem reaktionsraum
DE4112057A1 (de) *	1991-04-12	1992-10-15	Oventrop Sohn Kg F W	Thermostatisch gesteuertes dreiwegeventil fuer einrohrheizungsanlagen

1993
- 1993-04-30 DE DE4314390A patent/DE4314390C2/de not_active Expired - Fee Related
1994
- 1994-04-23 EP EP94106367A patent/EP0622586B1/fr not_active Expired - Lifetime
- 1994-04-23 AT AT94106367T patent/ATE170966T1/de not_active IP Right Cessation
- 1994-04-23 DE DE59406860T patent/DE59406860D1/de not_active Expired - Fee Related

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE498511C (de) *	1928-04-13	1930-06-02	Escher Wyss Maschf Ag	Sicherheitsvorrichtung fuer Waermeaustauschvorrichtungen
US2823650A (en) *	1951-02-06	1958-02-18	Svenska Maskinverken Ab	Method and means for heat exchange between flowing media, preferably for remote heating systems
DE1117602B (de) *	1958-05-12	1961-11-23	Sulzer Ag	Anordnung zur Speisewasservorwaermung mittels Dampf
DE1163866B (de) *	1960-12-03	1964-02-27	Sempell Rhein Armaturen	Waermeaustauscher-Absicherung durch Schnellschlussventile
FR2551181A1 (fr) *	1983-08-26	1985-03-01	Gen Electric	Centrale a cycle mixte et deux combustibles
US4653524A (en) *	1985-12-16	1987-03-31	Wilson Warren M	Control valve assembly
DE4031207A1 (de) *	1990-10-04	1992-04-09	Grohe Armaturen Friedrich	Wassermischventil

Also Published As

Publication number	Publication date
DE4314390C2 (de)	1997-01-30
DE4314390A1 (de)	1994-11-03
DE59406860D1 (de)	1998-10-15
ATE170966T1 (de)	1998-09-15
EP0622586B1 (fr)	1998-09-09

Publication	Publication Date	Title
EP0275439B1 (fr)	1992-03-11	Dispositif de régulation de puissance de générateurs de chaleur à carburant
CH658493A5 (de)	1986-11-14	Dampfturbinenkraftwerk sowie ein verfahren zu dessen betrieb.
DE102009001006A1 (de)	2009-08-20	Komplexkraftwerk und Kraftwerksteuerverfahren
DE2363270A1 (de)	1974-06-27	Verfahren und vorrichtung zur regelung eines dampferzeugers
DE2544799C3 (de)	1979-03-15	Gasbeheizter Dampferzeuger
DE2423002A1 (de)	1974-12-05	Foerderleitung fuer unter druck stehende, vorzugsweise gasfoermige medien, mit einem druckminderer und mindestens einem absperrventil
EP0622586B1 (fr)	1998-09-09	Procédé de fonctionnement d'une conduite et dispositif pour effectuer le procédé
EP0544615B1 (fr)	1996-05-08	Méthode de fonctionnement d'un générateur de vapeur à passage unique et à recirculation à faible charge
DE3030173C2 (fr)	1992-05-27
EP3472514B1 (fr)	2021-02-24	Procédé de fonctionnement d'un générateur de vapeur à récupération de chaleur
EP0065033A2 (fr)	1982-11-24	Installation de chauffage pour chauffage urbain
EP0565853B1 (fr)	1997-05-28	Procédé et dispositif de régulation de la température aller d'un système de chauffage et dispositif de commande par la mise en oeuvre du procédé
EP3460207B1 (fr)	2020-11-04	Unité formant générateur de vapeur pourvue d'une fonction d'électrothermie
AT527058B1 (de)	2024-10-15	Heizvorrichtung und Heizverfahren
DE4418298A1 (de)	1995-11-30	Verfahren und Einrichtung zur Steuerung und Regelung der Leistung eines Dampfkraftwerksblocks
DE4336237C2 (de)	1998-09-17	Verfahren zur Zu- und Ableitung von Kondensat und Wasser-Dampf-Kreislauf
DE489649C (de)	1930-01-20	Verfahren zur Regelung von hintereinandergeschalteten Dampfmaschinen, insbesondere Normaldruckturbinen mit Vorschaltturbinen
DE3620623C1 (de)	1988-02-18	Verfahren und Vorrichtung zum abwechselnden Heizen und Kuehlen eines Waeremtauschers
DE804391C (de)	1951-04-23	Verfahren zur Regelung der Waermezufuhr in einer Waermekraftanlage und Waermekraftanlage zur Ausfuehrung dieses Verfahrens
AT524304A1 (de)	2022-04-15	Verdampfervorrichtung für ein Brennstoffzellensystem
DE136838C (fr)
DD290587A5 (de)	1991-06-06	Destillationsapparatur mit reduziertem kuehlwasserdurchlauf
DE565043C (de)	1932-11-25	Regelung der Speisung von Fluessigkeitserhitzern mit Zwangsumlauf des Arbeitsmittels
DE849041C (de)	1952-09-11	Gasturbinenanlage mit mindestens zwei vom Arbeitsmittel parallel durchstroemten Turbinen
DD224905A1 (de)	1985-07-17	Verfahren und anordnung zum bauteilschonenden anfahren eines kraftwerksblockes

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