EP0828986A1 - Procede de nettoyage de surfaces pouvant etre predeterminees et soufflante pour lance a eau associee - Google Patents

Procede de nettoyage de surfaces pouvant etre predeterminees et soufflante pour lance a eau associee

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Publication number
EP0828986A1
EP0828986A1 EP96917467A EP96917467A EP0828986A1 EP 0828986 A1 EP0828986 A1 EP 0828986A1 EP 96917467 A EP96917467 A EP 96917467A EP 96917467 A EP96917467 A EP 96917467A EP 0828986 A1 EP0828986 A1 EP 0828986A1
Authority
EP
European Patent Office
Prior art keywords
interior
cleaning
cleaning medium
cleaned
lance blower
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.)
Granted
Application number
EP96917467A
Other languages
German (de)
English (en)
Other versions
EP0828986B1 (fr
Inventor
Friedrich Bude
Karl Albers
Stephan Simon
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
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Application filed by Bergemann GmbH filed Critical Bergemann GmbH
Publication of EP0828986A1 publication Critical patent/EP0828986A1/fr
Application granted granted Critical
Publication of EP0828986B1 publication Critical patent/EP0828986B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • 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
    • 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
    • F28G3/166—Rotary appliances using jets of fluid for removing debris from external surfaces of heat exchange conduits

Definitions

  • the present invention relates to methods for cleaning predeterminable surfaces of a heatable interior, preferably a furnace, in which deposits are deposited.
  • the invention further relates to a lance blower which can be used for these processes.
  • a main area of application of the invention is the cleaning of power plant boilers.
  • water lance blowers For the start-up cleaning of slagged or soiled heating surfaces in fireboxes, water lance blowers are used, which, arranged at an opening, blow a compact water jet through the flame and the firebox onto the walls opposite or to the side and the walls due to the shock effect of the water clean.
  • Such water lance blowers are disclosed in DD 145 476 and DD 155 857.
  • the water lance executes a blow figure that can take on a wide variety of geometries: eg spirals (DD 145 476) or meandering bands (DD 155 857).
  • the water jet emerging from the water lance blower then executes a cleaning figure on the wall, which the water jet hits.
  • the blowing path is controlled by control devices for the movement of the water lance, which are mounted in their front areas at a fixed point at the combustion chamber opening and are guided on their rear bearing via a path and / or time control of the lance guide.
  • a control is disclosed in such a way that a fixed reference point or location is approached with each work step and thus always the same local starting position of the water lance for executing the blow figure is ensured. Possible tolerances that occur in the control system are thereby leveled, so that no path changes occur.
  • Different blow figures which also have openings from Z. B. omit burners and flue gas re-aspiration, assign a lance blower for a wide variety of surface areas and sizes of the wall surface to be blasted and cleaned and optionally called up for blowing operation.
  • DE 195 19 748.8 AI, DE 195 19 780.1 AI and DE 195 19 790.1 AI geometrically assign conditions of the geometry of the wall surfaces to the coordinates of the water lance positions on site.
  • a lance blower coordinate is assigned to each point on the wall surface that the lance blower hits as a geometric beam.
  • DD 281 448, DD 281 452 and DD 281 468 disclose methods for controlling water lance blowers and for determining slagging areas on heating surfaces in combustion chambers of coal dust furnaces.
  • DD 281 448 describes a method for controlling a water lance blower for cleaning heating surfaces, reference images being generated by means of an optical probe which is coupled to a camera and a measuring system. These are divided into fields by coordinates of the measuring system and marked with signals. Real images are generated during combustion chamber operation and compared with the reference images.
  • a slagging area is determined from the comparison and a command signal is generated from coordinates of known blow figures of the water lance blower, which commands the water lance blower to clean the slagging area.
  • a known blow figure can be determined by any hand-controlled method of the water lance blower while observing the water jet on a screen.
  • DD 281 452 discloses a method in which, after a slagging area has been determined from known, stored coordinates from blow figures of a water lance blower which is driven to the determined slagging area. This is intended to limit the area to be cleaned in terms of area and circumference.
  • the selection of the operation of the water lance blower is concentrated on selected cleaning areas according to the degree of soiling. Registration, summation and subsequent evaluation of the cleaning result are provided. All of these processes assume a geometrically defined jet of water.
  • the emissivity of cleaned or clean and soiled or dirty fire walls is measured in emission measuring devices in DE 41 39 838, compared with target values and commands for the blowing rhythm and the blowing intensity with regard to the blowing jet speed of a water lance blower are derived therefrom .
  • This solution is used for coals with thin, white, shiny or radiating ashes or deposits.
  • DE 41 39 718 AI and US-A 4,539,588 an infrared video image is generated to use this method, which simultaneously compares the local radiation intensity of predetermined soiled and clean combustion chamber measuring surfaces. This comparison is based on measurement results from photodetectors installed at preferred locations in the combustion chamber wall, which measure the local radiation intensities and display them on the monitor.
  • Known devices and methods for cleaning heating surfaces usually use the position of the water lance blower when moving its blow figure to create a connection between the surface to be cleaned and the water jet. This connection is based on geometric considerations, with the assumption being made that the geometrically derivable target point of the water lance blower on the cleaning surface coincides with the impact point of the water jet. An attempt is made, such as B. in DD 281 468 discloses to save a blow figure by observation of a water jet and to use it later.
  • the object of the present invention is to provide methods which can be used for a targeted, scheduled cleaning of a predeterminable surface of an interior in various conditions in the interior. Furthermore, it is an object of the present invention to provide a lance blower that enables effective, scheduled cleaning of a predeterminable surface of an interior in different conditions in the interior.
  • the invention provides a method for determining a positioning of a controllable lance blower for cleaning a predeterminable surface of a heatable interior, preferably a furnace, in which deposits are deposited, with at least one spot of a cleaning medium of the lance blower on a surface of the interior to be cleaned and - at least one
  • the position of at least part of the lance blower, by means of which the direction of discharge of the cleaning medium from the lance blower can be determined, is determined and registered, and a correlation is established between at least the impact spot and the position, including at least one parameter that is related to the interior , the correlation being able to determine the positioning of the lance blower for cleaning the predeterminable surface for the respective state in the interior.
  • the invention provides a method for cleaning a heatable interior, preferably a furnace, in which deposits are deposited, with a controllable lance blower, the cleaning medium of which is intended to impinge on a predefinable surface of the interior to be cleaned, with a predetermined control of the lance blower the correlation associated with the state in the interior and / or the state of the cleaning medium is superimposed in such a way that the predeterminable surface to be cleaned is hit as planned by the cleaning medium in every state in the interior.
  • a controllable lance blower is created for cleaning a heatable interior, in particular a combustion chamber, in which deposits are deposited, the cleaning medium of which strikes a surface of the interior to be cleaned, with a programmable control of the lance blower and means for storing at least one correlation for the scheduled cleaning of the surface to be cleaned depending on the condition in the interior.
  • the correlation for cleaning is preferably based on the observation of at least one impact spot of the cleaning medium on a surface of the interior in certain conditions in the interior and at least one known position of at least part of the lance blower, by means of which the outflow direction of the cleaning medium from the lance blower can be determined, on.
  • a simple equation of the jet geometry of the lance direction and the target point thus found on the surface to be cleaned, in particular a wall surface, with the impact spot does not reflect reality.
  • the lance blower it is therefore expedient for at least a part of the lance blower to be positioned and / or for a value, such as a pressure, a volume flow or a flow rate, which characterizes the cleaning medium, to be controlled or regulated in such a way that the predefinable surface to be cleaned, is hit by the cleaning medium.
  • a value such as a pressure, a volume flow or a flow rate, which characterizes the cleaning medium
  • the impact spot can be determined by means of suitable perception means, sensors in the walls to be cleaned or optical devices preferably being used.
  • An advantageous embodiment of a method according to the invention provides that one or more sensors are located in the walls to be cleaned. These are hit by the cleaning medium, which the sensors pick up and pass on.
  • the operating state of the interior to be cleaned parameters such as the impact spot, the position of a part of the lance blower, by means of which the outflow direction of the cleaning medium is determined, and a characteristic parameter, e.g. B. the load state of the boiler, then registrable.
  • a further embodiment of the invention provides that the impact spot is determined by means of a physical and / or chemical effect of the impacting cleaning agent.
  • shock effects due to the temperature differences of the cleaning agent and the area of the interior to be cleaned can be localized.
  • visual or optical observations such as photography, film or other light / laser / thermal radiation processes, are also suitable for clearly assigning wall points of the surface to be cleaned to impact spots of the cleaning medium.
  • suitable means for determining sound or vibrations due to the impact of the cleaning medium on the surface to be cleaned are present or that the impact of the cleaning medium on a viewing hatch or on an open hatch is determined and so that the impact spot is located and registered.
  • suitable sensors can advantageously also be be installed outside the surface to be cleaned. You do not need to be exposed to the prevailing ambient temperatures in fire rooms.
  • a change in the local temperature due to the low temperature of the cleaning medium and its impact spot compared to the ambient temperature can also be determined by means of emission measurement.
  • the impact spot, its center, its dimensions and the jet pressure are scanned when a sensor, for example a punctiform sensor, is scanned and used for the correlation.
  • An advantage of the invention is that the method for determining the positioning of a controllable lance blower and the method for cleaning the heated interior do not necessarily have to be carried out together with a controllable lance blower.
  • This makes it possible to borrow corresponding measurements for determining the positioning for a known interior and to establish one or more correlations on the basis of the measurements so that the lance blower can be positioned.
  • the correlations achieved for the interior of a furnace for example, can then be used directly in a cleaning process.
  • a corresponding method for cleaning this interior can then be adapted according to the existing geometries, flow conditions in the boiler or installation geometries of the lance blower by means of the correlations.
  • the fictitious impact spot from preferably at least three values of impact spot and position of the lance blower each in the form of coupled vector fields. Since the geometries of the interior are known, a mathematical model, which preferably also characterizes the state of the interior, can be obtained from this in a further development of the methods for controlling the impact spot. If the interior is operated under defined conditions, corresponding parameters can be determined and registered while simultaneously determining an impact spot and an associated position of the lance blower. The same applies to a condition of the cleaning medium to be registered, which can also be determined by means of a mathematical model. In this way, cleaning figures can be created which, depending on the density of the specific impact spots, can be driven down extremely precisely.
  • a further development of the invention checks whether a correlation with the impact spot on a predetermined surface of the cleaning medium to be cleaned according to plan coincides sufficiently. If the deviation is too large, the correlation or the positioning is otherwise corrected.
  • An advantageous embodiment of the invention also provides that the lance blower is moved via a suitable search mode of the control in such a way that defined impact spots for positioning are found and registered.
  • the at least one parameter related to the interior which relates to a state in the interior, gives the possibility of including the conditions prevailing in the correlation.
  • the condition of the cleaning medium in turn allows, for example, a mass accumulation control of a connected pump, which is responsible for the pressure build-up of the cleaning medium, to meet the predefinable surface to be cleaned as planned.
  • an embodiment of the lance blower according to the invention has suitable means for detecting the parameter or parameters.
  • an operating state of at least a part of a connected system in the correlation is also advantageous to include an operating state of at least a part of a connected system in the correlation as a parameter relating to a state in the interior.
  • an internal state can be determined, for example, by the load driven or the type of mill switching. Also taking into account the aging condition of the surfaces to be cleaned and thus of shifts compared to a former one The established reference state is an important, considerable parameter for the correlation.
  • the cleaning medium itself must also be taken into account according to the invention.
  • Parameters such as the exit pressure, the volume flow or the exit speed from the lance blower are important for the calculation or determination of the impact spot.
  • these parameters can also be controlled or even regulated by means of suitable devices, for example using a corresponding control loop which regulates the correlation for the positioning of the lance blower.
  • the composition of the cleaning medium can also be adapted to the surfaces to be cleaned using suitable means.
  • the lance blower itself also has an influence on the blow figure to be executed and the cleaning figure on the surface to be cleaned due to its structural geometry.
  • the dimensioning of the nozzle plays an important role in how the expelled cleaning medium behaves in the interior to be cleaned.
  • the nozzle geometry can therefore be adapted in a further development. This can be done by exchanging the nozzle or using suitable attachments.
  • a favorable embodiment of the invention provides that a scheduled cleaning figure is specified and the cleaning medium executes this on the surface to be cleaned in the interior via a suitable correlation.
  • FIG. 1 shows a controllable water lance blower in a side view
  • FIG. 2 shows the controllable water lance blower from FIG. 1 in a further side view
  • FIG. 3 shows the water lance blower from FIG. 1 with a corresponding coordinate system
  • FIG. 4 shows a geometry of a heatable interior in the configuration of a combustion chamber part
  • FIG. 5 shows a principle of a correction - Procedure of a control on the
  • Combustion chamber part of Figure 4 is a coordinate detection of the water lance position in Figure 5 and Figure 7 shows an operation of a correction method.
  • FIG. 1 is used for illustration and shows a controllable water lance blower in a side view.
  • a hatch 2 with bevels 3 and 4 inwards.
  • the movement point 5 of the water lance 6 in the form of a pivot bearing or ball joint for the water lance 6 which is fixed in its center 6 has fastening points 7.1, 7.2, 7.3 at the rear end, in which the lance-side ends of the movement elements 8.1, 8.2, 8.3 are rotatably fastened, but cannot be displaced on the lance.
  • the rear ends of the movement elements 8.1, 8.2, 8.3 can be rotated into the fixed bearings 9.1, 9.2, 9.3, e.g. Kugelgelen ⁇ ke, involved.
  • the water enters the lance 6 via a connection 10 and a water supply 11 as a water guide 20 in the form of a pressure-resistant flexible hose.
  • the water lance blower is surrounded by numerous components, some of which hinder the installation.
  • a steam pipe 13 and the fixed bearing 9.1 are attached to a first support 12 above the hatch 2.
  • a second support 14 is arranged at a short distance, to the right of hatch 2.
  • a light grating 15 serving as a working platform ends on the right.
  • the second support 14 also delimits the railings 16 and 17 and the walking and working platform 15 and holds a control cabinet 18.
  • the distance between the steam pipe 13 and the outer skin 19 of the Wall 1 is severely restricted.
  • the lance end can be pivoted by means of its movement elements 8.1, 8.2, 8.3 vertically in the swivel range S from above “o” to the bottom “u” and in its horizontal region (not shown) from the left “1” to the right “r”. With predetermined controlled distances between points 9.1-7.1 and 9.3-7.3, each position of the lance is clearly fixed together with the front pivot bearing 5 of the lance 6.
  • each movement element 8.1-8.3 will perform a change in length and speed of change depending on the spatial geometry of the distances, angular relationships and the geometric location of the brackets 7.1-7.3 and fixed bearings 9.1-9.3, which will coordinate the lance movement and the guidance of the water ⁇ execute beam.
  • means 45 for registering and for controlling the movement of the movement elements are located on one side of the second carrier 14. However, the location of the control means is not dependent on the immediate proximity to the water lance blower. Connected to the lance blower via suitable data transmission paths 46, the control means can also be installed in a control room so that they can be accessed quickly.
  • the geometry between movement point 5, attachment points on the water lance 7.1-7.3 and fixed bearings 9.1-9.3 is measured, the results are entered into a computer program and the change of each movement element is given for given blow figures. and / or stored depending on the blowing time and transmitted to the movement elements via the control elements during operation.
  • the distances of the movement elements can be adjusted during the setting phase of the working areas via the primary movement of the lance or a locking device (not shown) on the end of the lance, which is mechanically coupled to an adjustment device for the blowing paths.
  • FIG. 4 The geometry of a combustion chamber part is recorded in FIG. 4.
  • a coordinate of the lance position can be geometrically assigned to any further wall point in the combustion chamber. In a preferred embodiment, this is done geometrically using the existing combustion chamber dimensions, for example using a mathematical program.
  • characteristic points of the combustion chamber walls are determined by means of on-site measurements, e.g. Laser beams replacing the lance position, which are used when the boiler is at a standstill, the longitudinal and transverse expansion of the wall surfaces during boiler operation must of course be taken into account, or other suitable measuring devices also in continuous operation.
  • blow paths for surface areas to be cleaned are then determined geometrically in a mathematical or measuring way and entered into the control of the movement elements 8.1-8.3.
  • An example of this is the blow figure shown in FIG. 4 for cleaning the slag whiskers below a few smoke gas suction devices R and above a smoke gas suction device.
  • the theoretical cleaning program begins at A and ends at E.
  • the theoretical mode of operation is such that after programming the associated theoretical path-time diagrams, e.g. in the computer or data memory of the block control system, after entering the corresponding cleaning command of the water lance blower moves to the theoretical position A (Fig. 4) and with the opening of the water supply the path-time program of the movement elements 8.1-8.3 to point E is shut down and the water supply closes again there,
  • a combustion chamber is delimited by the walls W a (1) , W b , W c and W d to be cleaned.
  • the burner openings B j to B 6 are in the lower part of the walls, and the flue gas return openings R j to R 6 are in the upper part.
  • the hatch L a is arranged centrally in the wall W a
  • the hatch L c is arranged in the wall W c .
  • the points A and C are intended to arrange a horizontal geometric plane E which meets the walls W b and W d in the center in the geometric points B and D.
  • an operating state Z j of the combustion chamber as shown in FIG. 5, the burners B 1 5 B 2 , B 3 and B 6 are in operation.
  • L load level
  • an air ratio lambda in an operating state Zi
  • a predetermined amount of gas mill feed gas and hot air
  • a flow profile is established in the combustion chamber, which generally differs from other operating conditions.
  • the speed profile P (AC) and P (BD) of the flame / flue gas mixture at the level of the plane W along the lines AC and BD are dash-dot-shaped in the vertical plane for the operating state Z x and the speed centers W j , W 7 , W 3 and W 6 of the associated flame beams as they pass through the plane W are shown in dashed lines.
  • This velocity profile shows a concentration of the flame flow in the area of the C and B wall-side cross-sections with considerable speed increase compared to wall areas A and D.
  • Water lance 6 is installed in hatch 2.
  • the gravity effect of the jet would result in a parabolic jet path when the boiler is not in operation, which, drawn as a thin dotted line, hits the wall W c at the point C s .
  • the lance is now shifted from the initial position L (0,0) in a sample operation Z such that the true point of impact C ⁇ of the jet is reliably determined and thus " true "is also met.
  • This is achieved, for example, by determining the position L (x 0 , y 0 ) of the lance when the hatch L c is open, in which the water jet striking the wall W c blows clearly through the open hatch into the boiler house.
  • the clearly defined “true” meeting point of point C is open the wall W c with the theoretical guide coordinate F (0,0) is assigned the "true” lance position L (X 0 , y 0 ) in the control of the fan.
  • FIG. 6 illustrates a coordinate-based detection of the water lance position from FIG. 5.
  • each lance position with its lengths or coordinates of the movement elements 8.1-8.3 is assigned a coordinate F (Y, X). Since in the example of FIG.
  • this plane F is at an angle of 90 ° to the combustion chamber walls W b , W d and from 0 ° to the combustion chamber wall W c , simplified mathematical relationships of the geometry between the lance jet direction F (Y; X) and the result theoretical point of impact of the beam on the walls mentioned above. If the true point of impact C w is known and the operating state Z ⁇ is known, a corresponding coordinate assignment is carried out.
  • FIG. 7 explains the mode of operation of a correction method from the theoretical to the "true" contact surface of the water lance blower for the example described.
  • 4, 5 has the combustion chamber wall W c , which is shown in Fig. 7.
  • the wall W c also has the large hatches a to g and the small hatches i to m, furthermore the suction openings R 4 and R 5 , the burner openings B 4 and B 5 .
  • the theoretical limit coordinates G ⁇ are calculated using a mathematical program for the wall W c and a control program F p assigned to the coordinate plane F of the water lance blower.
  • the field delimited by the G th lines is analogously calculated and assigned to the entire area using individual coordinates.
  • the water lance blower control receives a search program in which the surroundings of a search coordinate are scanned step by step. A theoretical blow figure "see below" the search program is drawn in for all search coordinates for search coordinate 1 of hatch 1.
  • the theoretical coordinate 1 (x., Y.) Of the water lance blower on the guide level F (Fig. 4, 5) for the theoretical point of impact 1 is entered in the search program. Hatch 1 opens.
  • the blow program su j is started. Starting from theoretical coordinate 1, the water jet gradually blows off the search program below. If the blow figure reaches a coordinate at which the water jet blows clearly or maximally through hatch 1, the program is stopped or the coordinate of the water lance blower is registered on the guide level F and these "true" hit coordinates 1 '(x. ⁇ y, ') saved under 1'. For the example of FIG. 7, this takes place on the wall W c at the location of the theoretical coordinate 1 '.
  • the stop time 7 F of the program below on the management level F and the meeting time ⁇ Wc, l on the wall W ' P c at location 1 do not match.
  • Runtime r of the jet from the nozzle outlet until it hits 1 must also be taken into account. It is experimentally or mathematically in
  • each coordinate on the wall W c is assigned a "true" lance position via the program F p 'in such a way that for the operating state Zi each wall coordinate is met with accuracy using the true water lance coordinates and the theoretical blow ⁇ limits Gfl j really can be reached as "true" limits.
  • blow figure AE From FIG. 4.
  • F p Its theoretical blow coordinates are stored as a subroutine in the program F p , which takes over the geometric coordinate conversion, coordinates of the movement elements 8.1-8.3 in coordinates of the control plane and geometric coordinates of the Impact points of a straight line
  • the program F p ' is entered by entering operating state parameters, eg. B. Z,, the program F p '(Z ⁇ ) is activated and the theoretical coordinates of the blow figure AE are converted into "true" coordinates
  • the true hit locations a to m are determined by the same method, but also by different sensor or display technologies on a combustion chamber or combustion chamber wall 1st to 3rd determined. Such technologies have already been described in detail above.
  • control cabinet 18 control cabinet, control cabinet

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Incineration Of Waste (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Nozzles (AREA)

Abstract

Le procédé décrit sert à déterminer la position d'une soufflante de lance réglable utilisée pour nettoyer une surface pouvant être prédéterminée d'une chambre intérieure pouvant être chauffée, de préférence une chambre de combustion dans laquelle se forment des incrustations. On détermine et on enregistre au moins un point d'impact d'une substance de nettoyage projetée par la soufflante sur une surface à nettoyer de la chambre intérieure et la position d'au moins une partie de la soufflante, ce qui permet de déterminer le sens d'écoulement de la substance de nettoyage projetée par la soufflante. On établit ensuite une corrélation entre le ou les points d'impact et la position de la soufflante, en tenant compte d'au moins un paramètre relatif aux conditions régnant dans la chambre intérieure. Cette corrélation permet de déterminer la position que doit prendre la soufflante pour nettoyer une surface pouvant être prédéterminée. L'invention concerne également un procédé et un dispositif de nettoyage d'une chambre intérieure pouvant être chauffée, de préférence une chambre de combustion, dans laquelle se forment des incrustations, au moyen d'une soufflante réglable qui doit projeter une substance de nettoyage sur une surface pouvant être prédéterminée à nettoyer de la chambre intérieure. A cet effet, on superpose à une commande prédéterminée de la soufflante une corrélation associée aux conditions régnant dans la chambre intérieure et/ou à l'état de la substance de nettoyage, de sorte que la substance de nettoyage soit projetée comme prévu sur la surface à nettoyer quelles que soient les conditions régnant dans la chambre intérieure. On peut ainsi compenser des déplacements indésirables du jet de nettoyage d'une soufflante causés par les différentes conditions de fonctionnement à l'intérieur de la chambre.
EP96917467A 1995-05-30 1996-05-30 Procede de nettoyage de surfaces pouvant etre predeterminees et soufflante pour lance a eau associee Expired - Lifetime EP0828986B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19519780 1995-05-30
DE19519780 1995-05-30
PCT/EP1996/002323 WO1996038701A1 (fr) 1995-05-30 1996-05-30 Procede de nettoyage de surfaces pouvant etre predeterminees et soufflante pour lance a eau associee

Publications (2)

Publication Number Publication Date
EP0828986A1 true EP0828986A1 (fr) 1998-03-18
EP0828986B1 EP0828986B1 (fr) 2002-03-06

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP96917467A Expired - Lifetime EP0828986B1 (fr) 1995-05-30 1996-05-30 Procede de nettoyage de surfaces pouvant etre predeterminees et soufflante pour lance a eau associee
EP96916172A Expired - Lifetime EP0828985B2 (fr) 1995-05-30 1996-05-30 Soufflante pour lance a eau et procede pour operer la soufflante pour lance a eau

Family Applications After (1)

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EP96916172A Expired - Lifetime EP0828985B2 (fr) 1995-05-30 1996-05-30 Soufflante pour lance a eau et procede pour operer la soufflante pour lance a eau

Country Status (5)

Country Link
EP (2) EP0828986B1 (fr)
CN (2) CN1124469C (fr)
AU (2) AU5902596A (fr)
DE (2) DE59608453D1 (fr)
WO (2) WO1996038701A1 (fr)

Cited By (1)

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CN1186548A (zh) 1998-07-01
EP0828985B2 (fr) 2004-10-06
WO1996038703A1 (fr) 1996-12-05
EP0828986B1 (fr) 2002-03-06
CN1131992C (zh) 2003-12-24
AU6003396A (en) 1996-12-18
DE59608453D1 (de) 2002-01-24
AU5902596A (en) 1996-12-18
CN1186547A (zh) 1998-07-01
WO1996038701A1 (fr) 1996-12-05
EP0828985B1 (fr) 2001-12-12
CN1124469C (zh) 2003-10-15
DE59608847D1 (de) 2002-04-11
EP0828985A1 (fr) 1998-03-18

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