EP1198693B1 - Souffleur de lance a eau pour le nettoyage d'echangeurs de chaleur, en particulier d'une surface de chauffe d'une chambre de combustion - Google Patents

Souffleur de lance a eau pour le nettoyage d'echangeurs de chaleur, en particulier d'une surface de chauffe d'une chambre de combustion Download PDF

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Publication number
EP1198693B1
EP1198693B1 EP00954323A EP00954323A EP1198693B1 EP 1198693 B1 EP1198693 B1 EP 1198693B1 EP 00954323 A EP00954323 A EP 00954323A EP 00954323 A EP00954323 A EP 00954323A EP 1198693 B1 EP1198693 B1 EP 1198693B1
Authority
EP
European Patent Office
Prior art keywords
linear unit
water
lance blower
nozzle
way
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 - Lifetime
Application number
EP00954323A
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German (de)
English (en)
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EP1198693A1 (fr
Inventor
Hermann Mangold
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.)
Vattenfall Europe Generation AG and Co KG
Original Assignee
Mehldau & Steinfath Feuerungstechnik GmbH
Mehldau & Steinfath Feuerungst
Mehldau & Steinfath Feuerungstechnik GmbH
Vattenfall Europe Generation AG and Co KG
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
Priority claimed from DE1999132539 external-priority patent/DE19932539C1/de
Priority claimed from DE1999146188 external-priority patent/DE19946188C1/de
Application filed by Mehldau & Steinfath Feuerungstechnik GmbH, Mehldau & Steinfath Feuerungst, Mehldau & Steinfath Feuerungstechnik GmbH, Vattenfall Europe Generation AG and Co KG filed Critical Mehldau & Steinfath Feuerungstechnik GmbH
Publication of EP1198693A1 publication Critical patent/EP1198693A1/fr
Application granted granted Critical
Publication of EP1198693B1 publication Critical patent/EP1198693B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F28G15/00—Details
    • F28G15/02—Supports for cleaning appliances, e.g. frames
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
    • F23J3/023—Cleaning furnace tubes; Cleaning flues or chimneys cleaning the fireside of watertubes in boilers
    • 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
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
    • F28G1/166—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris from external surfaces of heat exchange conduits
    • 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
    • F28G15/00—Details
    • F28G15/04—Feeding and driving arrangements, e.g. power operation

Definitions

  • the invention relates to a water lance blower for cleaning heat exchangers, in particular a combustion chamber heating surface in steam boilers According to the preamble of claim 1.
  • a water lance blower is from DE-A-196 37 700 known.
  • a water lance blower for cleaning heat exchangers is already known, which is attached to the mouth of the blowpipe via a universal joint in a hatch of the combustion chamber wall and in which the rear part of the blowpipe is arranged in a guide which is mounted on a vertical spindle is vertically displaceable, the vertical spindle being horizontally displaceable on a horizontal spindle at the top and bottom.
  • the horizontal spindles are stored at their ends in a box, fastened there and are operatively connected to one another on one side.
  • the guide is formed from a housing that is not rotatably seated on the vertical spindle and carries on the side a fork-shaped holder, in which a gimbal-shaped cage is arranged, which is provided with a sleeve in its inner part and receives the blow tube axially displaceably therein.
  • the horizontal spindles of this water lance blower are surrounded by a bellows to protect the spindles from dirt.
  • Both conventional water lance blowers have two horizontal and one vertical spindles moved by asynchronous motors, the vertical spindle holding the cardan joint for the blowpipe guide via a fork-shaped holder.
  • the control of both blowers is only possible via asynchronous motors by means of incremental encoders after the reference points of the blow pattern have been specified by pulse counting. Due to the cycle times of the programmable logic controller (PLC) and play in the spindle nuts, the process is fraught with inaccuracies.
  • the design of the fan is complex and relatively expensive.
  • the attachment or guidance of the blow pipe over the fork-shaped receptacle is unstable.
  • this blower can only be adapted to a limited extent to various boiler designs, especially in confined spaces.
  • the blowing angle is max. Limited to 60 °. The blower can only be transported as a complete construction.
  • a design of the nozzle head and the nozzle is described in DD 205 976.
  • the integration of an axially displaceable blow pipe for cleaning DD 235 103 shows heat exchangers in the combustion chamber wall.
  • a water lance blower for cleaning heat exchangers, in which the housing of the blower and the receptacle of the gimbal are formed from one part, a feather key, which is T-shaped, in a special way via a flange and a shaft with the housing is connected (DE 42 39 410 A1).
  • the design of this water lance blower is complicated. This results in malfunctions in operation due to contamination and the undesired escape of residual water after the fan is switched off.
  • an arrangement for cooling a water lance blower in which the blower head of the blower is formed from two blowing nozzles which are at an angle to one another (DD 268 759 A1).
  • An expanding jacket tube is arranged around the two angle nozzles, through which cooling air is blown.
  • the expanding cooling air jet causes insufficient cooling of the nozzles.
  • the nozzle center is not exposed to cooling air at all. Deposits cannot be effectively removed with it.
  • a steam nozzle in which the steam is applied Nozzle is cooled by radial air slots by means of air (DE-PS 202 062).
  • the Forming an effective protective veil around the nozzle is with radial slots not possible.
  • the nozzle is also rigid and not movable.
  • the invention has for its object to develop a water lance blower which is easily transportable in individual parts, easy to assemble and to repair, precise control and high repetition accuracy the blow pattern allows without causing increased production costs than contamination of the nozzle head as possible, even under operating conditions to prevent or constant cleaning without complex measures to achieve, so that at no time a reduction in the emerging Nozzle jet occurs through caking and the cooling effect on the To improve nozzle.
  • the linear units are interchangeable in size depending on the boiler and can also be arranged at an angle depending on the space available.
  • the bellows attached to the fittings are connected to the blowpipe.
  • the profile for fastening the linear units to the boiler wall is preferably designed as a U-profile with a flange.
  • Another special feature of the invention is that a targeted use of the pressure difference between the boiler house and the combustion chamber takes place via the recesses of the connecting piece arranged in a circle around the nozzle and its integration into the front universal joint.
  • This pressure difference is used in a particularly advantageous manner via the recessed extension of the connecting piece, that the air flow without significantly changing its direction, on the one hand flows around the nozzle in a veil-like manner and on the other hand via the conically enlarged inlet and the recesses the flow rate of the distributor is increased.
  • This has the consequence that largely no dirt can be deposited in the first place and any existing deposits can be effectively cleaned off without the use of additional media. In this sense, there is no unnecessary turbulence caused by the equalization of the air flow, which would reduce the effect.
  • the nozzle is exposed to considerably less high combustion temperatures of the boiler, since there is a strong cooling due to the veil-like air flow.
  • the distributor ring has circular cutouts.
  • the blower is constructed via the auxiliary frame 1 by means of a U-profile 2 and mounting flange 3 on the boiler wall 4 and via the mounting brackets 5; 6 tied to the wall box 7 (Fig. 1 and 2).
  • the mobility of the blow pipe 8 is on the one hand via a vertical and a horizontal linear unit 9; 10, which are connected to one another via a cross slide 11, and on the other hand via a front and a rear universal joint 12; 13 accomplished. While the front universal joint 12 is used in a round shape with a small gap width, the rear joint 13 is designed as a closed double frame construction 14 with an outer frame 15 and an inner frame 16.
  • the outer frame 15 is over the spacer 17 and ribs 18 and flange 19; 20 connected to the vertical linear unit 9.
  • the inner frame 16 is connected to the outer frame 15 via the recess 21 and spacer 22 with vertical bolts 23.
  • the blowpipe guide 24 (FIG. 4) is held in the center via the horizontal bolt 25 in the inner frame 16.
  • the blow pipe guide 24 has connecting pieces 26 on both sides; 27 for receiving a respective bellows 28; 29, which are connected at their other ends to the blowpipe 8 and thus keep the permanently sliding guide of the blowpipe 8 clean even in the event of heavy dust and dirt accumulation (FIG. 5).
  • Each linear unit 9; 10 is via a servo motor 30; 31 driven.
  • the servomotors 30; 31 are on the resolvers 32; 33 with the respective control unit 34; 35 connected.
  • the nozzle head 36 attached to the blow tube sleeve 24 has the nozzle 37 in its head region (FIG. 6).
  • the connecting piece 40 is fastened / fitted via its ring-shaped thickening 39 in the front universal joint 12 and is characterized by a cylindrical part 46, an adjoining conical extension 38 and an enlarged cylindrical part 49 (FIG. 7).
  • the connecting piece 40 has a distributor ring 42 with recesses 41, which engages in a recess 43 of the nozzle head 36 and is fastened to it.
  • the swirl device 44 arranged in the inlet area of the blow tube sleeve 24 has Installation plates 45 for rectifying the water jet flow (Fig. 9 and 10).
  • the mode of action is as follows:
  • the water lance blower (WLB) is used to remove dirt from heating surfaces in combustion plants.
  • the water introduced suddenly cools the incrustations on the hot tube bundles, causing the slag to flake off.
  • the water is pumped at high pressure through a blow pipe, at the end of which there is a nozzle, not shown.
  • the blow pipe is clamped in the rear part in an axis system, which is able to approach any XY coordinate within the mechanical limits.
  • the water jet can coat a cone / pyramid of up to ⁇ 100 °, based on the axial center of the lance, over the solution according to the invention.
  • the axes are moved by servo drives, which are characterized by their positioning accuracy compared to other systems.
  • all travel commands relating to acceleration, braking, speed and positioning are monitored and controlled via a position measuring system (resolver) integrated in the motor. Deviations from the target position (even after positioning) are automatically tracked. This is called position control.
  • This system suppresses inaccuracies in the movement that z. B. result from mechanical aging.
  • any movement can be programmed - so-called blow figures. These are stored in the control units of the axes. After initiating the program, the WLB works through the blow figure independently. The interdependency of the X and Y axes and the valve for switching the water jet on and off are controlled directly from the program. Commands from higher-level control systems are not required during the blow program. At the end of the program, a ready message is issued.
  • the pressure difference between the boiler house and the combustion chamber through the recesses 41 of the distributor ring 42 leads air 50 around the nozzle 37 in a veil-like manner with a strong increase in their flow speed , In this way, the formation of deposits and caking in the form of dust particles from the combustion chamber is largely avoided without any aids and additional media and, on the other hand, any deposits that may still exist are cleaned. This is done without unnecessarily redirecting the flow direction of the air 50 and without swirling it.
  • the water jet is formed in such a way that it is atomized as a laminar flow in the nozzle 37, so that effective cleaning can take place even in large steam generators with considerable diameters.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Incineration Of Waste (AREA)
  • Air Supply (AREA)
  • Cleaning In General (AREA)
  • Nozzles (AREA)
  • Gas Burners (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Claims (7)

  1. Souffleur à lance à eau pour le nettoyage de caloporteurs, en particulier d'une surface de chauffage d'une chambre de combustion dans des chaudières à vapeur, pouvant être fixé avec l'ouverture du tube de soufflage (8), via une articulation avant à cardan (12), dans une lucarne ou un boítier de mur (7) de la paroi de la chambre de combustion et dont la partie arrière du tube de soufflage (8) est disposée dans un guidage pouvant être réglé verticalement en hauteur et étant fixé horizontalement de façon mobile à une unité linéaire connue via une articulation arrière à cardan (13) qui présente, en tant que partie intérieure, une douille de guidage du tube de soufflage (24) dans laquelle le tube de soufflage (8) est disposé de façon mobile dans le sens axial, le tube de soufflage (8) présentant un gicleur (37) ainsi qu'une tête de gicleur (36),
    caractérisé en ce que
    l'unité linéaire horizontale connue (10), mobile dans le sens horizontal et réglable en hauteur, commandée séparément via des servomoteurs (30 ; 31) avec des revolvers (32; 33), est guidée via un chariot en croix (11) sur une unité linéaire (9) disposée verticalement, pouvant être fixée via un cadre auxiliaire (1) et deux consoles de fixation (5; 6) à la paroi de la chaudière, l'articulation arrière à cardan (13) disposée sur l'unité linéaire verticale (9) étant exécutée en forme de construction fermée à double cadre (14) et dont le cadre extérieur (15) est relié dans sa partie supérieure, via une entretoise (17) à des nervures (18) à l'unité linéaire verticale (9) via deux brides (19 ; 20), la bride (20) présentant un évidemment (21) pour le logement d'un boulon (23), de façon à créer un centre de rotation supérieur et inférieur et à ce que le boulon (23) est fixé, via une autre entretoise (22) au cadre intérieur (16) de la construction à double cadre (14) qui accueille dans son centre, via un boulon transversal (25), la douille de guidage du tube de soufflage (24) qui présente sur les deux côtés des pièces de raccordement (26; 27) accueillant un soufflet d'intercirculation (28; 29) chacune,
    entre la tête de gicleur (36) et l'articulation avant à cardan (12), une pièce de raccordement (40) est disposée qui présente, dans la zone du gicleur (37) installé dans la tête de gicleur (36), un élargissement (38) en forme de cône, dans la zone intérieure de l'articulation avant à cardan (12) un épaississement (39) en forme de couronne installée dans celle-ci et, dans la zone avant de la tête de gicleur (36), une bague de distribution (42) se trouvant sur celle-ci et présentant des évidements (41), reliée de préférence via un filet à la tête de gicleur (36).
  2. Souffleur à lance à eau selon la revendication 1, caractérisé en ce que les unités linéaires (9; 10) sont conçues de façon remplaçable de par leur taille en fonction de la chaudière.
  3. Souffleur à lance à eau selon la revendication 1 ou 2, caractérisé en ce que les unités linéaires (9; 10) sont disposées, divergeant de leur position verticale resp. horizontale, de façon oblique en fonction des conditions de place.
  4. Souffleur à lance à eau selon l'une ou plusieurs des revendications 1 à 3, caractérisé en ce que les soufflets d'intercirculation (28; 29) disposés sur les pièces de raccordement (26; 27) sont reliés au tube de soufflage (8).
  5. Souffleur à lance à eau selon l'une ou plusieurs des revendications 1 à 4, caractérisé en ce qu'un profil (2) est exécuté en forme de U pour la fixation des unités linéaires (9; 10) à la paroi de la chaudière.
  6. Souffleur à lance à eau selon l'une ou plusieurs des revendications 1 à 5, caractérisé en ce que la bague de distribution (42) présente des évidements circulaires (41).
  7. Souffleur à lance à eau selon l'une ou plusieurs des revendications 1 à 6, caractérisé en ce qu'un dispositif de dégyration (44) est disposé dans la zone d'entrée du guidage du tube de soufflage avec des tôles de montage (45).
EP00954323A 1999-07-08 2000-07-07 Souffleur de lance a eau pour le nettoyage d'echangeurs de chaleur, en particulier d'une surface de chauffe d'une chambre de combustion Expired - Lifetime EP1198693B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE1999132539 DE19932539C1 (de) 1999-07-08 1999-07-08 Wasserlanzenbläser zur Reinigung von Wärmeübertragern
DE19932539 1999-07-08
DE19946188 1999-09-21
DE1999146188 DE19946188C1 (de) 1999-09-21 1999-09-21 Wasserlanzenbläser zum Reinigen eines Dampfkessels
PCT/DE2000/002265 WO2001004561A1 (fr) 1999-07-08 2000-07-07 Souffleur de lance a eau pour le nettoyage d'echangeurs de chaleur, en particulier d'une surface de chauffe d'une chambre de combustion

Publications (2)

Publication Number Publication Date
EP1198693A1 EP1198693A1 (fr) 2002-04-24
EP1198693B1 true EP1198693B1 (fr) 2004-03-24

Family

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EP00954323A Expired - Lifetime EP1198693B1 (fr) 1999-07-08 2000-07-07 Souffleur de lance a eau pour le nettoyage d'echangeurs de chaleur, en particulier d'une surface de chauffe d'une chambre de combustion

Country Status (11)

Country Link
EP (1) EP1198693B1 (fr)
CN (1) CN1135361C (fr)
AT (1) ATE262671T1 (fr)
AU (1) AU6683600A (fr)
DE (1) DE50005801D1 (fr)
DK (1) DK1198693T3 (fr)
ES (1) ES2220512T3 (fr)
PL (1) PL352942A1 (fr)
PT (1) PT1198693E (fr)
RU (1) RU2229077C2 (fr)
WO (1) WO2001004561A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
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CN102580508A (zh) * 2012-03-21 2012-07-18 无锡雪浪环境科技股份有限公司 伸缩型喷雾装置
CN102580506A (zh) * 2012-03-09 2012-07-18 山东山大华特环保工程有限公司 用于sncr脱硝工艺的内混式还原剂雾化喷枪

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CN101814801B (zh) * 2010-04-22 2013-06-19 张文军 立式布置空冷发电机组散热器双面内部清洗装置
CN103894371B (zh) * 2014-03-12 2017-01-25 国家电网公司 变压器冷却系统自动冲洗装置
CN104562152B (zh) * 2015-01-27 2016-09-28 浙江水利水电学院 电泳涂装吹水方法和吹水装置
CN108267162A (zh) * 2016-12-30 2018-07-10 核动力运行研究所 一种蒸汽发生器传热管双探头检查定位装置
CA3054943A1 (fr) * 2017-03-20 2018-09-27 Stoneage, Inc. Appareil et systeme de positionnement de lances de nettoyage de tubes flexibles
CN107246821A (zh) * 2017-07-17 2017-10-13 姬鄂豫 回转式空气预热器在线清扫装置及其清扫方法
CN108061306B (zh) * 2018-01-24 2023-07-21 厦门理工学院 一种自动化烟道清灰装置及烟道自动清灰方式
CN108194932A (zh) * 2018-02-27 2018-06-22 浙江开创智库科技有限公司 一种医疗垃圾焚烧专用一体化净化器
CN110186316B (zh) * 2019-05-07 2024-02-20 浙江理工大学 热定型废气余热回收换热器自动清洗装置及自动清洗方法
CN111081406A (zh) * 2019-12-31 2020-04-28 中国核动力研究设计院 放射性工件高压水清洗配套实验设备和清洗要素实验方法

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Publication number Priority date Publication date Assignee Title
DE202062C (fr)
FR381363A (fr) * 1907-08-29 1908-01-10 Ernst Moritz Scheld Appareil à ramoner les tubes de chaudières
DD235103A1 (de) 1985-03-06 1986-04-23 Orgreb Inst Kraftwerke Wasserlanzenblaeser mit einem axial verschiebbaren blasrohr zur reinigung von waermeuebertragern
DD268759A1 (de) 1988-02-09 1989-06-07 Orgreb Inst Kraftwerke Anordnung zur kuehlung eines wasserlanzenblaesers
DE4239410C2 (de) 1991-12-18 1997-07-17 Ver Energiewerke Ag Wasserlanzenbläser zur Reinigung von Wärmeübertragern
DE4142448A1 (de) 1991-12-18 1993-07-08 Ver Energiewerke Ag Wasserlanzenblaeser zur reinigung von waermeuebertragern
DE19637700C2 (de) 1996-09-04 2001-06-07 Ver Energiewerke Ag Wasserlanzenbläser zur Reinigung von Wärmeübertragern

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102580506A (zh) * 2012-03-09 2012-07-18 山东山大华特环保工程有限公司 用于sncr脱硝工艺的内混式还原剂雾化喷枪
CN102580508A (zh) * 2012-03-21 2012-07-18 无锡雪浪环境科技股份有限公司 伸缩型喷雾装置

Also Published As

Publication number Publication date
AU6683600A (en) 2001-01-30
PL352942A1 (en) 2003-09-22
DE50005801D1 (de) 2004-04-29
DK1198693T3 (da) 2004-08-02
ES2220512T3 (es) 2004-12-16
WO2001004561A1 (fr) 2001-01-18
RU2229077C2 (ru) 2004-05-20
CN1135361C (zh) 2004-01-21
EP1198693A1 (fr) 2002-04-24
CN1369054A (zh) 2002-09-11
ATE262671T1 (de) 2004-04-15
PT1198693E (pt) 2004-08-31

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