EP0148997B1 - Echangeur de chaleur avec une pluralité de souffleurs de suie - Google Patents

Echangeur de chaleur avec une pluralité de souffleurs de suie Download PDF

Info

Publication number
EP0148997B1
EP0148997B1 EP84110433A EP84110433A EP0148997B1 EP 0148997 B1 EP0148997 B1 EP 0148997B1 EP 84110433 A EP84110433 A EP 84110433A EP 84110433 A EP84110433 A EP 84110433A EP 0148997 B1 EP0148997 B1 EP 0148997B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
compressor
sootblower
exchanger according
valve
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
Application number
EP84110433A
Other languages
German (de)
English (en)
Other versions
EP0148997A1 (fr
Inventor
Karl Albers
Hans Schwade
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.)
Bergemann GmbH
Original Assignee
Bergemann 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.)
Filing date
Publication date
Application filed by Bergemann GmbH filed Critical Bergemann GmbH
Priority to AT84110433T priority Critical patent/ATE23630T1/de
Publication of EP0148997A1 publication Critical patent/EP0148997A1/fr
Application granted granted Critical
Publication of EP0148997B1 publication Critical patent/EP0148997B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G3/00—Rotary appliances
    • F28G3/16—Rotary appliances using jets of fluid for removing debris

Definitions

  • the invention relates to a soot blower for cleaning heating surfaces in a heat exchanger with the features of the preamble of claim 1.
  • the smoke gases in the heat exchanger which are produced when solid, liquid or gaseous fuels are burned, are connected to the lance tube of the sootblower via the nozzles and can penetrate them.
  • the mostly aggressive and hot gases cause damage due to corrosion or pollution.
  • a harmless, gaseous flushing medium for example air
  • a barrier medium for example air
  • FR-A-1 132985 is blown into the wall box surrounding the entry stele at the entry of the lance tube into the heat exchanger
  • the purge air and sealing air are removed from a central blower in heat exchangers, in particular in power plant boilers which are equipped with a large number of sootblowers, and distributed to the individual sootblowers.
  • This requires a complex piping system. Because of the usually low pressure level of the central blowers used, relatively large line cross sections are often required to keep the friction losses low.
  • a separate control device is required in front of each soot blower in order to ensure the most uniform possible distribution of the required air quantities despite the different friction losses due to the pipe lengths not being equal to the individual soot blowers.
  • the connections on the sootblower valve and / or on the wall box must be made flexible because of the thermal expansion of the heat exchanger and the movement of the sootblower caused thereby.
  • a procedural requirement of many manufacturers and operators of heat exchangers is, moreover, that the amount of air introduced per soot blower should remain as small as possible and should not exceed a maximum value even in the case of frequently occurring pressure fluctuations on the flue gas side.
  • the central blower and the complex air distribution system can be dispensed with, since the flushing and sealing air can be generated on each soot blower by a separate compressor.
  • This compressor and the distribution pipes on the soot blower are designed so that each soot blower always receives the required amount of purge air and sealing air. The necessary rough adjustment can be made at the manufacturer.
  • the soot blower shown has a lance tube 1 which is provided with nozzles 2 at its front end.
  • the lance tube 1 is connected to a gear carriage 4 driven by a motor 3, which can be moved together with the lance tube 1 on a stationary mounting rail 5.
  • the motor 3 also sets the lance tube 1 in a rotational movement, so that the nozzles 2 perform a helical movement overall.
  • the end points of the travel path of the lance tube 1 are each determined by a fixed limit switch.
  • the lance tube 1 can be moved through an inlet opening into a heat exchanger, the wall of which is indicated by a wall tube 6.
  • the inlet opening is surrounded by a wall box 7 for sealing against the outside atmosphere.
  • the lance tube 1 with the nozzles 2 is located inside the wall box 7.
  • the displaceable lance tube 1 surrounds a stationary inner tube 8, the rear end of which has a connection for a blowing medium, for example steam.
  • the amount of the blowing medium is regulated via a sootblower valve 9 arranged on the sootblower.
  • the inner tube 8 is provided with a connection 10 for a flushing medium, for example air.
  • the Purge air connection 10 is arranged above the valve seat of the soot blower valve 9, ie behind the soot blower valve 9 in the direction of flow of the blowing medium.
  • the lance tube 1 is supplied with purge air which emerges from the nozzles 2.
  • a check valve 12 is arranged in a scavenging air line 11 leading to the scavenging air connection 10 and is set such that the blowing medium cannot penetrate through the scavenging air line 11 after the soot blower valve 9 has been opened.
  • the wall box 7 is provided with a connection 13 for a barrier medium, for example air.
  • the sealing air connection 13 is connected via a flexible line 14 to a sealing air line 15 laid on the soot blower.
  • the pressure of the purge air and the sealing air is above the gas pressure prevailing in the heat exchanger.
  • the purge air and the sealing air are generated by a device specific to each soot blower, which is formed by a compressor 16 which is attached to the soot blower.
  • the compressor 16 is connected to the soot blower in the workshop to form a unit.
  • the electrical connection cables for driving the compressor 16 and for the motor 3 of the soot blower drive are also routed to a central terminal box and are electrically protected there.
  • the compressor 16 is arranged in the vicinity of the soot blower valve 9.
  • An air line 17, which leads to an elbow 18, is connected to the outlet of the compressor 16.
  • the sealing air line 15 branches off to the sealing air connection 13 on the wall box 7 and the purge air line 11 branches off to the purge air connection 10.
  • a safety valve 19 is provided in the air line 17, the response pressure of which corresponds to the design pressure of the compressor 16.
  • the compressor 16 is preferably an embodiment which has a delivery volume that is largely independent of the level of the flue gas-side back pressure. Compressors operating according to the displacement principle, such as piston and rotary piston compressors, can be used.
  • a side channel compressor which can work largely independently of the back pressure in the pressure range of 0.99 to 1.02 bar, which is of interest to the sootblower, but is considerably lower in cost than the previously mentioned types of compressor.
  • these compressor designs it can be ensured that the delivery volume does not increase, or increases only insignificantly, even when the counterpressure on the flue gas side is lower than the design point of the compressor 16. This is a clear advantage over the radial blowers used for the known central air systems, the operating point of which is very much dependent on the prevailing back pressure.
  • the sealing air connection 13 on the wall box 7 can be omitted.
  • This solution is so advantageous because the flexible lines 14 required due to the movement of the heat exchanger wall can be omitted.
  • this version can only be selected if the flue gas-side overpressure is low, so that it can be accepted that no sealing air is emitted during the blowing operation of the soot blower.
  • the check valve 12 is namely closed and the compressor 16 is switched off or blows off via the safety valve 1, 9.
  • separate purge air connections 10 and sealing air connections 13 must be provided, as shown.
  • the compressor 16 is arranged directly on the wall box 7.
  • the sealing air connection 13 is rigidly connected to the wall box 7.
  • the air blown into the wall box 7 can simultaneously serve as sealing air and purge air and ensure that the flue gases cannot escape from the heat exchanger into the open or penetrate into the soot blower.
  • the control of the compressor 16 can be operated in such a way that the compressor 16 runs continuously, that is to say also during the soot blower operation with the soot blower valve 9 open and the check valve 12 closed. Any excess pressure which builds up is discharged via the safety valve 19.
  • the control is preferably carried out in such a way that the compressor 16 in the case of soot blows operation is issued.
  • the switch-on and switch-off pulses for the electrical drive of the compressor 16 are picked up by the contactors of the sootblower control, which are controlled by the limit switches of the sootblower.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (11)

1. Echangeur thermique équipé d'une pluralité de souffleurs de ramonage des suies pour le nettoyage de ses surfaces de chauffe, chaque souffleur de ramonage présentant une lance (1) traversant la paroi de l'échangeur par une ouverture isolée de.l'extérieur par un caisson d'étanchéité (7), la lance (1) étant dotée à son extrémité avant de tuyères (2), se raccordant à son extrémité arrière, par l'intermédiaire d'un clapet (9) de souffleur, à un système d'alimentation en fluide de soufflage, cette lance (1) étant pourvue d'un raccord (10) pour un fluide de ramonage ou le caisson d'étanchéité (7) pourvu d'un raccord (13) pour un fluide de blocage, un clapet anti-retour (12) étant de plus monté entre le clapet (9) du souffleur et le raccord (10) de fluide de ramonage, caractérisé en ce que chaque souffleur de ramonage des suies est équipé de son propre système de production et de distribution du fluide de ramonage et du fluide de blocage.
2. Echangeur thermique selon la revendication 1, caractérisé en ce que le système de production et de distribution du fluide consiste en un compresseur (16)..
3. Echangeur thermique selon la revendication 2, caractérisé en ce que le compresseur (16) est un compresseur à canal latéral.
4. Echangeur thermique selon la revendication 2 ou 3, caractérisé en ce qu'une soupape de sûreté (19) tarée sur la pression théorique de fonctionnement du compresseur (16) est prévue entre le compresseur (16) et les raccords (10, 13) pour fluide de ramonage et fluide de blocage.
5. Echangeur thermique selon l'une ou plusieurs des revendications 2 à 4, caractérisé en ce que le compresseur (16) est monté sur le souffleur de ramonage des suies et forme avec celui-ci une unité autonome.
6. Echangeur thermique selon la revendication 5, caractérisé en ce que le compresseur (16) est disposé à proximité du clapet (9) du souffleur.
7. Echangeur thermique selon la revendication 6, caractérisé en ce que l'introduction du fluide de ramonage et de blocage s'effectue exclusivement au-dessus du siège du clapet (9) du souffleur.
8. Echangeur thermique selon la revendication 5, caractérisé en ce que le compresseur (16) est disposé à proximité du caisson d'étanchéité (7).
9. Echangeur thermique selon la revendication 8, caractérisé en ce que l'introduction du fluide de blocage et de ramonage s'effectue exclusivement sur le caisson pneumatique (7).
10. Echangeur thermique selon l'une ou plusieurs des revendications 2 à 9, caractérisé en ce que les câbles électriques destinés au branchement du souffleur de ramonage des suies et du compresseur (16) sont raccordés à un bornier central.
11. Echangeur thermique selon l'une ou plusieurs des revendications 2 à 10, caractérisé en ce que le compresseur (16) est à l'arrêt durant le fonctionnement du souffleur et qu'il est piloté par les impulsions d'enclenchement et d'arrêt délivrées par les capteurs de fin de course du souffleur.
EP84110433A 1983-12-06 1984-09-01 Echangeur de chaleur avec une pluralité de souffleurs de suie Expired EP0148997B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84110433T ATE23630T1 (de) 1983-12-06 1984-09-01 Waermetauscher mit einer vielzahl von russblaesern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833343992 DE3343992A1 (de) 1983-12-06 1983-12-06 Russblaeser
DE3343992 1983-12-06

Publications (2)

Publication Number Publication Date
EP0148997A1 EP0148997A1 (fr) 1985-07-24
EP0148997B1 true EP0148997B1 (fr) 1986-11-12

Family

ID=6216125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84110433A Expired EP0148997B1 (fr) 1983-12-06 1984-09-01 Echangeur de chaleur avec une pluralité de souffleurs de suie

Country Status (7)

Country Link
EP (1) EP0148997B1 (fr)
JP (1) JPH0686927B2 (fr)
AT (1) ATE23630T1 (fr)
CA (1) CA1259002A (fr)
DE (2) DE3343992A1 (fr)
IN (1) IN163540B (fr)
WO (1) WO1985002673A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2774107B2 (ja) * 1988-08-09 1998-07-09 バブコツク日立株式会社 短抜差型スートブロワの運転方法
DE3910616A1 (de) * 1989-04-01 1990-10-04 Bergemann Gmbh Russblaeser
US5925193A (en) * 1995-05-30 1999-07-20 Clyde Bergemann Gmbh Method for cleaning pre-determinable surfaces of a heatable internal chamber and associated water lance blower
AU6189196A (en) * 1995-05-30 1996-12-18 Clyde Bergemann Gmbh Water jet blast with shortened water lance
DE59608799D1 (de) * 1995-05-30 2002-04-04 Clyde Bergemann Gmbh Antriebssystem für wasserlanzenbläser mit gehäuse für sperr- und spülmedium und verfahren zum betrieb
US6035811A (en) * 1995-05-30 2000-03-14 Clyde Bergemann Gmbh Water lance blower positioning system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE543593C (de) * 1928-10-25 1932-02-08 Henry Thomas Weis Russabblasevorrichtung
GB362450A (en) * 1930-09-04 1931-12-04 Allan Murray Wilson Improvements in or relating to the cooling of apparatus for cleaning boiler tubes
GB382109A (en) * 1931-12-03 1932-10-20 Whittemore Hulbert Whittemore Improvements in boiler cleaners
FR1132985A (fr) * 1954-06-25 1957-03-19 Babcock & Wilcox France Perfectionnements aux appareils échangeurs de chaleur
DE1176785B (de) * 1957-04-20 1964-08-27 Babcock & Wilcox Dampfkessel Russblaeser-Abdichtung
US3385605A (en) * 1966-04-04 1968-05-28 Diamond Power Speciality Wall box seal assembly
JPS4948751A (fr) * 1972-09-11 1974-05-11
JPS5655155A (en) * 1979-10-11 1981-05-15 Ikeda Touka Kogyo Kk Chewing gum
JPS5658155A (en) * 1979-10-15 1981-05-21 Toshiba Corp Control circuit of tape recorder
JPS57189662A (en) * 1981-05-18 1982-11-22 San Ei Chem Ind Ltd Improvement of sweeteness of thaumatin

Also Published As

Publication number Publication date
IN163540B (fr) 1988-10-08
DE3461338D1 (en) 1987-01-02
JPS61500628A (ja) 1986-04-03
JPH0686927B2 (ja) 1994-11-02
EP0148997A1 (fr) 1985-07-24
DE3343992C2 (fr) 1988-09-29
WO1985002673A1 (fr) 1985-06-20
DE3343992A1 (de) 1985-06-20
CA1259002A (fr) 1989-09-05
ATE23630T1 (de) 1986-11-15

Similar Documents

Publication Publication Date Title
EP0358866A1 (fr) Dispositif à l'arrière d'une turbine à gaz
DE2358097A1 (de) Verfahren und einrichtung zur reinigung der abluft eines ofens
DE2922841C2 (de) Blasrohr für eine mit Flüssigkeit arbeitende Vorrichtung zum Reinigen von Kesselheizflächen o.dgl.
DE3406516C2 (fr)
DE4014415A1 (de) Vorrichtung zur katalytischen oxidation der schaedlichen bestandteile in einem abgekuehlten traegergas eines verfahrenstechnischen prozesses
DE69220548T2 (de) System zum Abtransport der Heizflüssigkeit aus einer Anti-Vereisung-Vorrichtung in die Luftzuführung eines Turbostrahltriebwerkes bei niedrigem Druck und mit einem hohen Mischgrad
EP0148997B1 (fr) Echangeur de chaleur avec une pluralité de souffleurs de suie
EP0391038B1 (fr) Souffleur de suie
DE8915095U1 (de) Heißwasserbereiter
DE3544466A1 (de) Ventilsystem, insbesondere fuer abgas-verbrennungssysteme
DE69607917T2 (de) Gerät zum Absaugen eines Gases aus einer Leitung um es abzuführen
EP2312255A2 (fr) Procédé et dispositif de nettoyage de surfaces de chauffage alimentées en gaz de fumée d'un échangeur thermique dans une installation de combustion lors de son fonctionnement
DE2927434C2 (de) Vorrichtung zum Kühlen heißer Abgase, insbesondere aus Industrieöfen
DE3312599A1 (de) Russblaeser zum beseitigen von ablagerungen in gasdurchstroemten raeumen, wie waermetauschern, reaktionsraeumen und dergleichen
DE1105895B (de) Verfahren und Vorrichtung zum Reinigen der Kuehlwasserrohre von Waermeaustauschern durch Zufuehrung von Druckgas waehrend des Betriebes
DE2724532A1 (de) Brennervorrichtung fuer oel und/oder gas
DE2548067C3 (de) Einrichtung zur Absaugung und Verwertung brennbarer Gase aus Hüttenöfen, insbesondere Konvertern
DE19725415C2 (de) Verfahren und Anordnung zum Suaberhalten der Innenseite eines an einem Behälter oder Rohr befestigten Schauglases
DE102006037607B4 (de) Luftheizeinrichtung für Tieftemperatureinsatz
DE1298228B (de) Vorrichtung zur Entschlackung von mit Rohren verkleideten Brennkammerwaenden
DE69527995T2 (de) Verfahren und vorrichtung zur energierückgewinnung aus brennbare bestandteile enthaltenden medien auch bei niedrigen konzentrationen
DE69803157T2 (de) Ofen mit einer schnellen Kühlung für Metallbänder
DE1918265A1 (de) Arbeitsmittelfilter
DD289804A5 (de) Heizanlage
DE19533071C2 (de) Vorrichtung zur Reinigung von Einbauten in wärme- und/oder verfahrenstechnischen Apparaten

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19850807

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 23630

Country of ref document: AT

Date of ref document: 19861115

Kind code of ref document: T

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3461338

Country of ref document: DE

Date of ref document: 19870102

ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EPTA Lu: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19940901

Year of fee payment: 11

EAL Se: european patent in force in sweden

Ref document number: 84110433.4

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19950901

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19950914

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19960830

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19960906

Year of fee payment: 13

Ref country code: NL

Payment date: 19960906

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19960930

Ref country code: CH

Effective date: 19960930

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970902

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19970923

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970930

BERE Be: lapsed

Owner name: BERGEMANN G.M.B.H.

Effective date: 19970930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980401

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19980401

EUG Se: european patent has lapsed

Ref document number: 84110433.4

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980901

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030910

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20030916

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20030919

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20040831

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20