EP0828985B2 - Water jet blower and method of operating the water jet blower - Google Patents

Description

The present invention relates to a water lance blower according to the preamble of the claim 1 and a procedure for its operation. Such one Water lance blowers are known from WO-A-93/12398.

The cleaning of heating systems, in particular of the fireboxes of steam boilers of great performance among other things during operation also with the help of water lance blowers that bundle one Water jet through the firebox on the Deliver the opposite wall. As a result of the occurring Thermal shocks, the kinetic water jet energy and the sudden evaporation of in pores the deposits of water that has entered Chipping of soot from soot, slag and causes ashes. Typical arrangements and that Environment of such water lance blowers are, for example in DD 276 335 A1, DD 281 452 A5 and the DD 281 468 A5.

The water jet from water lance blowers generally follows a certain given one Path on the surface to be cleaned, also called blow figure, this path generally meandering or spiral and possibly obstacles, Cut out openings or other sensitive zones.

The cleaning parameters are known from DD 239 656 A1 using a water lance blower of temperature measurements on the surface to be cleaned to control.

In addition to controlling the drive system through a template that is absolutely specific Two-axis controls were mainly produced placed on a frame with control axes lying at right angles to one another, in particular one horizontal and one vertical Axis, particularly easy around meandering paths to be able to control. That was the way it used to be always possible, certain meandering blow figures through pure time control or control from a minimum stop to a maximum stop of the individual final drives.

However, this type of control made it necessary to align the drives as precisely as possible, like this B. is described in DD 234 479 A1. At least two actuating elements act there the water lance, these two actuators arranged at an angle of 90 ° on a frame are, in addition the attachment points the actuators on the frame in one plane with a horizontally and vertically movable joint the water lance must lie, which is the point of movement there the water lance forms.

Another two-axis control is also known from WO 93/12398, which the water lance by means of two spindle drives running perpendicular to each other controls precisely, which in turn by means of a Guide frame are supported.

With the water lance blower from WO 93/12398, the blowing lance is guided by mechanics and central drives, whereby in the space around the Blowing guides drive and bearing elements in one Frame structure are stored and arranged, the occupy a large space. The often great length the lance and the water supply lead to great leverage and forces, which in turn correspond Guides, drives and frames require.

In addition, not in the area of every hatch, which any opening can advantageously be a water lance blower should be arranged, sufficient Space is available. Numerous internals, such as steam pipes, control cabinets, work platforms etc. hinder the attachment of large rectangular frames.

The object of the present invention is therefore the creation of a drive system for a water lance blower, which is flexible even under confined spaces Space can be arranged and also the free choice of any blow figures and any Permits movement speeds. Object of the invention is also creating an appropriate process to operate such water lance blowers.

These tasks are solved by one Water lance blower according to claim 1 or a Method according to claim 19. Advantageous embodiments and configurations are in each dependent claims specified.

The water lance blower according to the invention for cleaning heating systems is by at least a moving element that is movable at one end with the water lance blower and with the other end is directly connected to the heating system. additionally is the drive system with displacement sensors for precise Determination of the position of the water lance equipped, whereby a regulated driving style is realized leaves.

With such a construction pursues new concept with which a water lance blower is to be carried out independently of a framework.

This enables flexible placement of the Water lance blower using the available space on the heating system. One end of the manipulator arm is on the Heat system preferably attachable so that the water lance blower in terms of maintenance and inspection is easily accessible without the space of a work platform is unnecessarily restricted. The manipulator arm itself can be designed freely, in one embodiment the movement element itself is the manipulator arm. The arrangement of the ends of one or more each Movement elements in a plane that is perpendicular to a vertical plane through the point of movement the water lance runs, allows this Movement point far forward into the hatch or relocate the heating system, which means larger ones Swiveling ranges and more favorable leverage ratios result in the drive system. Is the water lance blower in horizontal ceilings or floors Heating system built in, is below the vertical level a corresponding horizontal through the point of movement to understand. Will only be a moving element used, this is preferred in its Length and changeable in its direction and thus fulfills the functions of a manipulator arm. Are two Movement elements available, so they only need Longitudinal drives to own the water lance to move on any path.

However, there can be two movement elements occur that they are almost in alignment Take position, which drives the water lance is no longer possible or is very difficult. For such arrangements, a third moving element is which can then support the drive very important. Depending on the accuracy requirements the movement and stability of the system can also used more than three movement elements become.

Common to all described arrangements, that, for example, to perform a meandering Blow figure very complex, not linear Movements of the movement element or elements required are, so that easy control, in particular no timing for such arrangements more comes into consideration.

For this reason, the drive system Position transducer for the exact determination of the position the water lance, so that now no pure Control, but a regulated control along a target movement line is possible. The displacement sensors allow precise control of the blow figure, so that the movement elements regulated accordingly can be. The drive system also allows certain parts of the blow figure at a first speed and other parts of the blow figure, for example non-contaminated or sensitive areas; to drive at a second speed. in principle are any blow figures and any speed profiles programmable or by recording Can be saved on site.

The transducers can either be in the Movement elements themselves can be arranged as typical Displacement or angle sensors, or they can be on arranged one or more transducer arms his. It is important that they know the exact position of the Water lance with respect to a reference position, the if necessary, set before the start of the blowing process will be able to measure. Suitable as a displacement sensor capacitive, inductive or magnetic sensors, as well as digital pedometers and the like.

The control takes place in a common Control electronics that measure the measured values of the displacement transducers receives, with the target values of the given blow figure compares and the movement elements accordingly controls. This way, even at any Arrangement of the movement elements in the room Blow figures regarding route and speed can be repeated exactly. Depending on the space available it may also be beneficial to use the moving elements Levers, cables, chains, swivel joints and the like to adapt to the spatial conditions.

The availability of the system and the positioning accuracy and reproducibility of a blow figure to improve, it is possible to at least one To provide transducers more than in principle for determination the position is required. Through error compensation calculation can then inaccuracies of Transducers are reduced or the operation remains the system possible, even if a displacement sensor should fail.

There is a method of operating the system in that the system is built on site and then the blow figure using a template or visual Observed the water jet for the first time and the associated measured values of the displacement transducers get saved. Also a calculation of the Setpoints for the displacement transducers for any blowing figure is possible after the measured values of the certain reference points have been determined are.

The invention allows almost any Arrangement of one or more movement elements depending on local conditions, taking the scheme of the movement element or elements by displacement sensors despite the necessary complicated coordinate transformations the exact follow-up given Blow figures with predefined speed profiles allows.

Fig. 1

eine Ansicht von außen auf einen Wasserlanzenbläser in einer Luke einer Wärmeanlage,

Fig. 2

einen horizontalen Schnitt durch die Wand der Wärmeanlage in der Ebene des Wasserlanzenbläsers,

Fig. 3

schematisch die Wirkungsweise eines Wasserlanzenbläsers in einer Wärmeanlage,

Fig. 4

die Ansicht von Fig. 1 mit eingezeichneten Bewegungsachsen zur Erläuterung der Bewegungsabläufe,

Fig. 5

die Ansicht aus Fig. 2 mit eingezeichneten Bewegungsachsen,

Fig. 6

die Ansicht von hinten auf eine verkürzte Wasserlanze mit Ausgleichsvolumen,

Fig. 7

einen Längsschnitt durch die verkürzte Wasserlanze,

Fig. 8

eine Ansicht von hinten auf eine verkürzte Wasserlanze mit drei Bewegungsarmen,

Fig. 9

einen Längsschnitt durch Fig. 8,

Fig. 10 und 11

weitere Ausführungsbeispiele für Antriebssysteme von Wasserlanzen,

Fig. 12 und 13

eine Wasserlanze mit Kasten für Sperr- und Spülmedium in der Ansicht von hinten und im Längsschnitt.

The environment of the present invention and various examples to explain it are described with reference to the following drawing. Show

Fig. 1

a view from the outside of a water lance blower in a hatch of a heating system,

Fig. 2

a horizontal section through the wall of the heating system in the plane of the water lance blower,

Fig. 3

schematically the mode of operation of a water lance blower in a heating system,

Fig. 4

1 with the axes of movement drawn in to explain the movement sequences,

Fig. 5

2 with the axes of movement shown,

Fig. 6

the rear view of a shortened water lance with compensation volume,

Fig. 7

a longitudinal section through the shortened water lance,

Fig. 8

a rear view of a shortened water lance with three arms,

Fig. 9

8 shows a longitudinal section through FIG. 8,

10 and 11

further exemplary embodiments for drive systems of water lances,

12 and 13

a water lance with box for locking and flushing medium in the view from behind and in longitudinal section.

To illustrate the situation at Water lance blowers serve first of all Examples of FIGS. 1 to 5. In the wall 1 of a heating system there is a hatch 2 with offsets inside 3 and outside 4. In hatch 2 there is the movement point 5 of the water lance 6 in the form of a Swivel bearing or ball joint for the in his Center fixed water lance 6. The Water lance 6 has fastening points at the rear end 7.1, 7.2, 7.3 in which the lance-side ends of the movement elements 8.1, 8.2, 8.3 rotatable (but not slidable 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. Ball joints, involved. The entry of water into the lance 6 takes place via a connection 10 and a water supply 11 in the form of a pressure-resistant flexible hose.

The heating system is under realistic conditions of numerous, an installation of water lance blowers obstructing components. So are e.g. above hatch 2 on a first beam 12 a steam pipe 13 and the fixed bearing 9.1 attached. In a short distance away, to the right of hatch 2 is a second one Carrier 14 arranged. This ends on the right Light grille serving as a working platform 15. The second Beam 14 also limits the railings 16 and 17 as well the walking and working platform 15 and holds a control cabinet 18th

The lance end is by means of its moving elements 8.1, 8.2, 8.3 in the swivel range S vertical from top "o" to bottom "u" and in its horizontal Range can be swiveled from left "1" to right "r".

Because of the obstacles would be in this area a frame arrangement is not possible. Because of the small distance between steam pipe 13 and The outer skin 19 of the wall 1, the space is strong restricted, which is large in the work area "S" vertical paths from the upper "o" to the lower "u" Lance position allowed, but in the horizontal direction between outer skin 19 and steam pipe 13 only minimal Paths allowed. Because of the obstacle control cabinet 18 can the fixed bearing 9.3 only above it be attached and must because of the necessary large, almost horizontal paths in the work area S bottom right ("r" / "u") bottom left ("l" / "u") or top left ("l" / "o") on the extreme right edge the carrier 14 are attached, which also a long movement element 8.3 is required. At given controlled distances between the Points 9.1-7.1 and 9.3-7.3 is common with the front one Swivel bearing of the lance every position of the lance clearly fixed. Only in the work area of "r" / "o" obtuse angles occur with increased forces. According to the invention becomes a third but short movement element 8.2 installed between points 7.2 and 9.2, which is controlled simultaneously with its distances and a vibratory and jerky movement the lance 6 and the water jet prevented.

The movement elements 8.1 to 8.3 work in the upper and outer right edge of the work platform, do not hinder the inspection of the Stage and leave enough space down and left to the water connection 10 immediately behind the very short required for the blast jet quality Set lance length with an elbow 20 and arrange the water supply 11 to the left near the wall. Firstly, this means that the flexible swiveling path is small Hose possible and secondly the inspection the stage 15 to the blower even during the blowing operation possible without disability.

Located on the movement elements 8.1 to 8.3 themselves in Fig. 1 controls the lengths the movement elements depending on the given Blow figure and the measured values shown Position sensor 44 the position of the water lance to adjust. In every working position of the lance, every Movement element 8.1-8.3 one of the spatial Geometry of the distances, angular relationships and the geometric location of the brackets 7.1-7.3 and Fixed bearing 9.1-9.3 dependent length change and length change speed perform which among themselves matched the lance movement and the Execute guidance of the water jet. To do this on one side of the carrier 14 means 45 for registration and to control the movement of the moving elements. The location of the control equipment however, is not on the immediate vicinity instructed to the water lance blower. About suitable Data transmission paths 46 connected to the lance blower, can the control means also in one Wait to be attached to access them quickly to be able to.

In one embodiment, after Assembling the water lance blower between the geometry Movement point 5, attachment points on the Water lance 7.1-7.3 and fixed bearings 9.1-9.3 measured, the results are entered into a computer program and there the change for given blow figures each movement element depends on the blowing location and / or blowing time saved and over during operation transfer the controls to the motion elements.

In another embodiment the distances during the adjustment phase of the work areas of the movement elements over the primary movement the lance or a lock, not shown on the lance end, which with an adjusting device the blowing path is mechanically coupled, adjustable. With every movement of the adjusting device and locking resulting changes in length of the individual movement elements are via the displacement transducer registered and saved. So over the setting device predefined any blow figures become. After removing the adjustment device and the commissioning of control and water blowers the saved movements are executed.

The following is an example of the solution are explained in more detail:

1 after assembly with a centered lance position axially in the movement point 5, subsequent geometric dimensions for the position of the movement elements 8.1-8.3, their fixed bearings 9.1-9.3 and attachment points 7.1-7.3 on the water lance 6 relative to the central pivot point of the pivoting device 5, which is set as geometric point 0, have (FIGS. 4 and 5): Pivotal point of part no. geometric point X Y Z 5 0 0 0 7.1 X _7.1 Y _7.1 Z _7.1 7.2 X _7.2 Y _7.2 Z _7.2 7.3 X _7.3 Y _7.3 Z _7.3 9.1 X _9.1 Y _9.1 Z _9.1 9.2 X _9.2 X _9.2 Z _9.2 9.3 X _9.3 X _9.3 Z _9.3

Of course, those in FIGS. 4 and 5 apply and coordinates given in the table above only point-like pivot points, e.g. in the form of a ball joint. In the simplified drawn in Fig. 1, 2 and 4, 5 Solution with eye and ring-shaped connecting elements are still possible in the pivot Make corrections. But these are about the Testing decided because of all mechanical movements the necessary elements of movement Tolerance range is present.

About the pivot point with the coordinates X; Y; Z = 0, the movement point 5, the coordinates the wall areas to be cleaned and their limits determined by the fact that the geometric straight line (if necessary after ballistic correction for long distances) of the water jet of the lance 6 on the Wall surfaces of the heating system (each lance position assigned) geometric point on the wall certainly.

The geometry of a combustion chamber part is recorded in FIG. 3. In the lower part there are 6 burner openings B, in the upper part 6 flue gas return openings R. The installation state of a water lance 6 according to FIGS. 4, 5 is shown with its movement point 5 as a geometric point 0. For the plane Y = 0 there are the blowing limits from G _r on the combustion chamber walls, over the horizontal blowing area S to G _l , for the plane X = 0 there is the limit point G _u from G _o to S (top, right, .. etc. is logically arranged in mirror image to Fig. 4, 5). A coordinate of the lance position can be geometrically assigned to any other 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.

In an alternative embodiment, using on-site measurements characteristic points of the Combustion chamber walls, e.g. about the lance position replacing laser beams which are at a standstill of the boiler (this must of course the longitudinal and transverse expansion of the wall surfaces be taken into account when operating the boiler) or other suitable measuring devices also in continuous operation.

In an analogous way, they become geometric blowways on a mathematical or metrological way intended for surface areas to be cleaned and entered in the control of the movement elements. An example of this is the blow figure shown in FIG. 3 for cleaning the slag whiskers below some Flue gas back suction R and above one Rauchgasrücksaugung. The cleaning program begins at A and ends at E. The way it works is that after programming the associated path-time diagrams, e.g. in the computer or data storage of the Block control technology, after entering the appropriate Cleaning command the water lance blower into position A moves (Fig. 3) and with the water supply open the path-time program of the movement elements 8.1-8.3 is driven to point E and there the Water supply closes again.

6 and 7 show another embodiment a shortened, and therefore special easily movable water lance blower with 2 angle arms and control device. In the wall 1 of the heating system hatch 2 is located behind with offsets inside 3 and outside 4. In hatch 2 is the point of movement 5 of the water lance 6 permanently installed and as the front Swivel bearing for the one fixed in the center Water lance 6 formed. The lance 6 has at the rear End of attachment points 7.1, 7.2, in which the lance-side ends of the movement elements 8.1, 8.2 are rotatably attached. The rear end of the movement elements 8.1, 8.2 can be rotated into the fixed bearing 9.1, 9.2 included. Water entering lance 6 takes place via a connection 10 and a water supply 11 in the form of a pressure-resistant flexible hose. The Movement elements are attached to a frame, so that the water lance blower can be easily mounted can. Depending on the installation location, the frame can also be omitted become.

The lance 6 and the water connection 10 are incorporated into a ball container 20, the calming volume for the water flowing in from the side serves. The movement elements 8.1 and 8.2 settle together from one upper arm 21.1 u. 21.2 and one matched to the spherical shape of 20 curved ones Forearm 22.1 u. 22.2; which with turntables 23.1 u. 23.2 are connected.

The turntables have drives 25.1 and 25.2, which via flexible cable connections 26.1 and 26.2 open into the control cabinet 18. control cabinet 18 and fixed bearings 9.1 and 9.2 are in a frame 27 attached, which is arranged on the wall 1. At this Execution of the water lance blower can only with a quarter frame and 2 movement elements 8.1 u. 8.2 the overall construction in one area be attached on one side above the hatch, so that the floor area and the left side for inspection fully available by a worker 28. In particular can create existing frame fragments can be used cheaply on the heating system, around a defined position of the water lance blower to achieve.

The extremely short lance 6 has at its end a ball container 20, which the inflow conditions the water supply 11 calms down and for a uniform over the cross section of the lance Water supply to the water nozzle ensures. With this arrangement the movement elements 8.1 u. 8.2, the brackets 7.1 u. 7.2 with the small design are the leverage ratios low and the stability of the lance guide sufficient with 2 movement elements. Despite the minor Dimensions is with the kinked outwards Lever system the spatial classification of the Drives 25.1 u. 25.2 and the control cabinet inside of the frame 26 possible. Special spatial Minimization is due to the small distances between the movement point 5 as the fulcrum and the brackets 7.1 and 7.2 with the then small Control movements of arms 8.1, 8.2 and cable connections 26.1, 26.2.

Another solution presents stability problems the lance guidance via only 2 length-controlled Movement elements by additional 1-2 not controlled movement elements loaded on train, which e.g. as ropes with counterweight run over rollers (see also Fig. 10 and 11: Pos. 8.2, 9.2, 29) fixed. The procedure is as in the 1st example for Fig. 1-4 described.

8 and 9 show another embodiment for training and driving a shortened water lance blower with 3 symmetrically arranged Angle arms as movement elements. In the wall 1 of the heating system is the hatch 2 with bevels on the inside 3 and outside 4. In the Luke 2, the movement point 5 is permanently installed and as front swivel bearing for the one fixed in the center Water lance 6 formed. Lance 6 has at the rear end fastening points 7.1, 7.2, 7.3, in which the lance-side ends of the movement elements 8.1, 8.2, 8.3 are rotatably attached. The back Ends of the movement elements 8.1, 8.2, 8.3 are rotatably integrated into the fixed bearings 9.1, 9.2, 9.3. The Water enters lance 6 via a connection 10 and a water supply 11 in the form of a pressure-resistant flexible hose. The movement elements 8.1-8.3 consist of one each Upper arm 21.1-21.3, forearm 22.1-22.3 and one each Turntable 23.1-23.3, which with not shown Angle adjustment devices are equipped. The Water lance 6 ends at the rear end in a 180 ° deflection 24, which connects to a manifold 20. This solution has the advantage that by the kink of the upper arm and forearm construction the attachment points 7.1-7.3 close to as a movement point 5 shown pivot point 0 of the Swiveling device still inside the outer offset 4 work and the path lengths from 7.1-7.3 in Working area S and thus the angle of rotation of the turntables 23.1-23.3 can be minimized.

This is another cut, not shown the water lance length 6 but also the reduction of the forearm-upper arm system 22-23-21 possible that the fixed bearing 9.1-9.3 immediately on Edge of the outer edge of the outer offset 4 attached can be and the overall construction the hatch dimensions only slightly exceed and the necessary movements of the flexible hose the water supply is further reduced. The setting the work areas are carried out in the same way as previously described. A change in path is caused by a change in the angle of rotation Δ Alpha of the turntables 23.1-23.3 replaced.

10 and 11 show exemplary embodiments for water lance blowers with 2 tangentially attached Movement elements and a hydraulic cylinder.

The rope-shaped movement elements 8.1 and 8.3 are with their fixed bearings 9.1 and 9.3 and retractors 42 are arranged approximately horizontally but in contrast to the previous solutions with their Brackets 7.1 and 7.3 on the tangential outer wall area an outer tube 35 of the water lance 6 attached within the overhang 4. The movement element 8.2 is a hydraulic cylinder with its Fixed bearing 9.2 on the support of the light grid 15 and on the lance with its attachment point 7.2 arranged in the vicinity of the air supply 38. Air 38 and Water 11 ports are axially backward with bends run together upwards in one direction. The air supply not only serves as Sealing and purge air, but also because of its Management as a cooling medium.

• kleine Wege der Bewegungselemente 8.1 und 8.3, damit nur geringe Drehwinkel der Rollen 42.
• verbesserte Kraftwirkung durch tangentiale Halterung 7.1 und 7.3 insbesondere bei großem Durchmesser des Außenrohres 35 bei Luftkühlung (Luftzufuhr).
• vereinfachte mit Schelle 43 verbundene gemeinsame Medienzufuhr Wasser/Luft bei geringstem Raumbedarf.
• sichere Führung trotz Seilzugwirkung 8.1 und 8.3 und durch HydraulikZylinder 8.2.

This arrangement has the following advantages:

• small paths of the movement elements 8.1 and 8.3, so that only small angles of rotation of the rollers 42.
• Improved force effect through tangential brackets 7.1 and 7.3, especially with a large diameter of the outer tube 35 with air cooling (air supply).
• Simplified joint water / air media supply connected with clamp 43 with minimum space requirement.
• safe guidance despite cable pulling effects 8.1 and 8.3 and by hydraulic cylinder 8.2.

The embodiment shown in FIGS. 12 and 13 shows schematically how water lance blowers by means of a protective sleeve with sealing and purge air protected and cooled and e.g. of three rope-like Movement elements can be moved. A shortened design of the water lance with in particular roughly wall-parallel supply of water can be completely well with a housing relatively well encapsulate, which protects all drive elements from contamination can be protected. Only the water supply and measuring and control lines must pass through the housing is moved to the outside. Various Flow guides, as shown in the drawing can be explained in more detail, so that at the same time cooling, protection against contamination (Flushing) and preventing an uncontrolled Gas exchange achieved through the hatch (blocking) can be. To especially the exit area protect against contamination and aggressive gases, can this of the flushing medium in the manner of a Flow around the jacket jet.

In an important additional aspect that is also independent from the invention to systems according to the State of the art can be realized here further improve the supply of blocking and Rinsing medium can be reached. This happens because that the supply of locking and flushing medium is not is set constantly, but for each water lance blower is regulated individually. This can be both a central supply of several housings suitable valves take place, as well as with an individual supply by appropriate regulation of the supply units.

GeeigneteMeß-undRegelgrößefürdieSperrfunktion of the medium is in particular the differential pressure between the interior of the heating system and the interior of the housing. If this value is kept constant, gas can never come in from the heating system the case flow and the flow of barrier medium in the heating system remains constant at an acceptable low level.

Suitable measurement and control variable for the rinsing function (or cooling function) of the medium is special the temperature at one or more measuring points in the front area of the water lance or nearby of the movement point. This point becomes constant held, the amount of cooling medium varies in Dependence on the operating conditions, however only to the extent absolutely necessary for the flushing function.

Both regulations can also be combined can be used, for example, by first the Differential pressure is kept constant, but when exceeded a limit temperature on a temperature control is switched.

In the wall 1 of the heating system is hatch 2 with bevels inside 3 and outside 4. The movement point 5 is permanently installed in hatch 2 and as a front pivot bearing for those in the center attached water lance 6 formed. The lance 6 has fastening points 7.1, 7.2 at the rear end, 7.3, in which the lance-side ends of the movement elements 8.1, 8.2, 8.3 are rotatably attached. The rear ends of the moving elements are rotatably integrated into the fixed bearings 9.1, 9.2, 9.3. The Water enters lance 6 via a connection 10 and a water supply 11 in the form of a pressure-resistant flexible hose. The not shown, non-rotatable but flexible bendable brackets 7.1-7.3 hold stable but flexible ropes, which act as movement elements 8.1-8.3. The ropes run or become fixed at the fixed positions 9.1-9.3 wound up / unwound on these rolls. Another Execution is at the end of the rope from Movement elements 8.2 a counterweight 29 (dotted ) Shown. The rollers have drives 25.1-25.3 with their consoles. The hatch 2 is through a junction box 30 limited. The outer edge of the junction box is connected to the lance 6 via a housing 31 sealed and forms an air-filled free interior 32. The lance 6 with its nozzle 33 has End of an inlet 34. The lance is through an outer tube 35 envelops. The outer tube has a separating ring 36, which has an air jacket 37 in the front region with air supply 38 and a water deflection in the rear part 39 forms, which in the water connection 10th empties.

Locking and flushing fluid, preferably air, from the air jacket 37 into the nozzle head the lance 6 and via openings 41 in the interior 32 stream. With this solution, the 3 movement elements 8.1-8.3 only controlled via tensile forces. Twisting forces due to the spatial movement of the movement elements be especially with a rope compensated, this is with reel 42 on Fixed bearing 9.3 shown. Role and rope are in one other solution replaced by chain and sprocket. With this solution, as shown at fixed bearing 9.1, hang the chain freely at the free end.

In another solution, a moving element, as shown here in dashed lines for 8.2, equipped without drive and the necessary tension generated via a roller 9.2 and counterweight 29.

With these solutions, air and water can be supplied be housed in a casing tube, the air and water supply hanging freely, in a vertical Level can be arranged without the Swivel positions motion elements and air or water supply obstruct. Through narrow ropes as movement elements, which are only small brackets 7.1-7.3 require is at max. inclination the lance also has enough space between them Housing 31 and lance -Outer tube35- if the brackets from design requirements to the outside Swivel in indentation 4. In this case the lance can be shortened further.

The outer tube 35 with the final Hemisphere as deflection 39 brings uniform inflow conditions of the water in the lance and secures Despite a short lance, a swirl-free water jet with a low Fan-out.

Of course, all listed technical solutions coupled as desired , in particular this concerns the selection and Combination of the technique of the movement element (s) and their effect on tension and / or pressure and arranging the brackets at different Distances to the movement point 5 of the lance, the Variation as ball joint, bracket, ring eyes, joint, Universal joint or rigid connection with flexible Transition, the variable choice of different lengths of moving elements and variable locations for the fixed bearings. Another advantage is the possibility of Retrofitting individual components such as the movement elements, the short water lance or the displacement sensor with control or the complete Water lance blower on a heating system. An example of an advantageous retrofit is one already known type of water lance blower, as in WO 93/12398 is described below become. In a wall, for example in the area of a light grating, there is a hatch with an interior and external overturning. The water lance chopped there is guided through a ball joint in the hatch. On a frame, which on the inner overhang attached to the wall are located at the top and bottom in a frame-mounted spindles that act as movement elements serve the water lance. The upper spindle is powered by a drive with a Path change / angle of rotation system rotated. On the spindles there are in turn bearings that are vertical Guide the moving element in the form of a spindle. This vertical spindle also has a drive with a path change / rotation angle change system. There is a on the vertical spindle Attachment point for the water lance. Through the connection the water lance on the ball joint in the hatch and at the attachment point of the vertical movement element is the jet direction of the water lance blower changeable. This water lance blower is now convertible; it becomes instead of the long water lance a shortened, curved built-in, which additionally one Has calming volume in the form of a ball. Furthermore, the water lance blower with a housing covered dust and splash proof. The movement elements are provided with displacement sensors, which in turn in connection with a controller stand. The drives of the movement elements are again guided by this control. The spatial Shortening of the water lance blower and its housing cover lead to a protected from accidents Accessibility of the light grid. A changeable drive in connection with the displacement transducers and the control enables the execution of any Blowing patterns.

Also the choice of the control method the blow figures and their programming can be any between the experimental metrological and mathematical programming solution with each other be coupled. So can measure or experimentally about the beam geometry of the lance guide extended into the heating system, geometric Key points, e.g. Maximum up / down, right / left etc., determines this in a mathematical program can be entered and then the others Path points for the blow figure can be calculated.

Another variation is that of others Solutions that have not yet been implemented in blow molding with different web speeds, so that heavily slagged spots preprogrammed longer are blown and / or realized that instead of Switching the water supply valves on / off with large Speed without interrupting the blowing operation from end point E to start point A of the next Blow figure is driven (see Fig. 3).

a. Das Verfahren sichert die variable Ausführung beliebiger Blasfiguren, es ist nicht vorrangig an die Geometrie der herkömmlichen Bewegungselemente mit um 90° wechselnden waagerechten und/oder senkrechten Bewegungen, Kreis- oder Evolventenbewegungen gekoppelt. Richtung, Umlenkung und Geschwindigkeit kann beliebig variiert und den Reinigungsforderungen individuell angepaßt werden.

b. Es bestehen keine Einschränkungen hinsichtlich der Einbauorte des Wasserlanzenbläser. Verbaute Luken, fehlendes Raumangebot und andere räumliche Hindernisse können durch die Variation der Anordnung und Länge der Bewegungselemente mit individueller Wahl der Festpunkte und Halterungen an der Lanze trotzdem für den Einbau angepaßter Wasserlanzenbläser genutzt werden. Damit kann für die Anordnung der Wasserlanzenbläser in der Wärmeanlage eine optimale Auswahl getroffen und die Anzahl der Wasserlanzenbläser an der Anlage minimiert werden.

c. Materialeinsatz, Platzbedarf und Gewicht des Wasserlanzenbläser werden minimiert. Insbesondere entfallen die in einem stabilen großen Rahmen untergebrachten Lager und Antriebe und die Spindeln, Ketten und Führungen der bisherigen Lösungen. Die Montage wird vereinfacht.

d. Die Materialbeschaffung wird erheblich flexibler, da keine Anforderungen an feststehende Abmessungen von Konstruktionselementen gestellt werden. Das Angebot am Markt für Bewegungselemente-Lösungen, Festlager und Steuerelemente kann beliebig genutzt werden.

e. Bei Defekten können konstruktive Abweichungen bei Ersatz von Bauelementen zugelassen werden, wenn die Einstellung der Blasfiguren angepaßt wird.

f. Die Abmessungen der Wasserlanzenbläser, insbesondere nach hinten und zur Seite, wird verringert. Damit ist die Begehung und der Einbau auch an schmalen Bühnen möglich.

g. Die Wasserzuführung wird vereinfacht und weniger störanfällig durch geringere Schwenkwege und Wegfall von Krümmungen.

As a result, the following advantages occur:

a. The process ensures the variable execution of any blow figures, it is not primarily linked to the geometry of the conventional movement elements with horizontal and / or vertical movements, circular or involute movements changing by 90 °. Direction, deflection and speed can be varied as required and individually adapted to the cleaning requirements.

b. There are no restrictions regarding the installation locations of the water lance blower. Built hatches, lack of space and other spatial obstacles can still be used for the installation of adapted water lance blowers by varying the arrangement and length of the movement elements with an individual choice of fixed points and brackets on the lance. This means that an optimal selection can be made for the arrangement of the water lance blowers in the heating system and the number of water lance blowers on the system can be minimized.

c. Material usage, space requirements and weight of the water lance blower are minimized. In particular, the bearings and drives housed in a stable, large frame and the spindles, chains and guides of the previous solutions are no longer required. The assembly is simplified.

d. Material procurement becomes considerably more flexible, since there are no requirements for fixed dimensions of construction elements. The offer on the market for motion element solutions, fixed bearings and control elements can be used as desired.

e. In the event of defects, design deviations when replacing components can be permitted if the setting of the blow figures is adjusted.

f. The dimensions of the water lance blowers, especially to the rear and to the side, are reduced. This means that it can be walked on and installed even on narrow stages.

G. The water supply is simplified and less susceptible to faults due to shorter swivel paths and elimination of bends.

LIST OF REFERENCE NUMBERS

1

wall

2

hatch

3

internal overhang

4

external offset

5

Movement point, ball joint

6

water lance

7.1-7.3

Attachment points on the water lance

8.1-8.3

movement elements

9.1-9.3

Attachment points on the heating system

10

mains water supply

11

water supply

12

first carrier

13

steam pipe

14

second carrier

15

Light grid

16, 17

railing

18

Control cabinet, control cabinet

19

Outer skin of the heating system

20

Ball volume, water flow

21.1-21.3

upper arm

22.1-22.3

forearm

23.1-23.3

turntable

24

Deflection, curvature

25.1-25.2

drives

26.1-26.2

cable connections

27

frame

28

worker

29

counterweight

30

junction box

31

casing

32

Housing interior

33

jet

34

enema

35

outer tube

36

separating ring

37

air jacket

38

air supply

39

water diversion

40, 41

openings

42

retractor

43

clamp

44

transducer

45

Control and / or registration means

46

data transmission

Δ alpha

Rotation angle change

.DELTA.L

path change

A

Beginning

e

The End

s

Workspace

r

right

l

Left

O

above

u

below

X, Y, Z

coordinates

G

border points

B

burner opening

R

Flue gas recycling eye opening

Claims (21)

1. A water lance blower for cleaning a heating installation being in operation and submitted to a flow of flames and/or combustion gases, with wall areas (A-E) and a hatch (2), said water lance blower comprising a water lance (6) with a mouth, at least one movement element and path sensors (44), wherein the water lance (6) is movable by means of the at least one movement element and movably (5) arranged with its mouth at or in the hatch (2), the path sensors (44) being provided for the exact determination of the position of the water lance (6) for realizing a controlled operating mode with any blow figures and the water lance (6) is capable of blowing a water jet through the heating installation onto wall areas (A-E) which can be reached from the hatch, characterized in that the at least one movement element is connectable at its one end to the water lance (6) and with the other end directly to the heating installation, wherein the movement element is a manipulator arm.
2. A water lance blower according to claim 1, characterized in that through the ends of the at least one movement element (8.1, 8.2, 8.3) a plane is defined which is not perpendicular to a vertical plane through the point of movement (5) of the water lance (6) at the heating installation.
3. A water lance blower according to claim 1 or 2, characterized in that there are at least two, preferably three movement elements (8.1, 8.2, 8.3) the fixing points (9.1, 9.2, 9.3) of which and the point of movement (5) of the water lance (6) respectively form angles of preferably about 80° to 140°.
4. A water lance blower according to claim 3, characterized in that the movement elements (8.1, 8.2, 8.3) themselves comprise path sensors which measure their exact length and/or angular position with respect to a reference position.
5. A water lance blower according to one of the preceding claims, characterized in that the water lance blower comprises at least one additional path sensor arm which has path sensors for determining the exact position of the water lance (6).
6. A water lance blower according to one of the preceding claims, characterized in that said water lance blower has means (45) for controlling or registering the movement of at least the water lance (6).
7. A water lance blower according to one of the preceding claims 3-6, characterized in that the movement elements (8.1, 8.2, 8.3) and the path sensors are connected to a shared electronic control system which calculates the exact position of the water lance (6) from the measured values of the path sensors and provides control commands to the movement elements (8.1, 8.2, 8.3), wherein in particular given pre-calculated and/or previously memorized courses of movement of the water lance (6) are exactly repeatable relative to the path of travel and the speed.
8. A water lance blower according to one of the preceding claims 3-7, characterized in that the movement elements (8.1, 8.2, 8.3) are hydraulic or pneumatic lifting cylinders, which are respectively hinged at one end (9.1, 9.2, 9.3) to a fixed point of the heating installation and hinged with the other end (7.1, 7.2, 7.3) to the part of said water lance (6) outside the heating installation.
9. A water lance blower according to one of claims 3 to 7, characterized in that the movement elements (8.1, 8.2, 8.3) are spindle drives or rack and pinion drives, which are respectively hinged with one end (9.1, 9.2, 9.3) to a fixed point of the heating installation and hinged with the other end (7.1, 7.2, 7.3) to the part of the water lance (6) outside the heating installation.
10. A water lance blower according to one of claims 3 to 7, characterized in that the movement elements (8.1, 8.2, 8.3) are electric or magnetic drives.
11. A water lance blower according to one of claims 3 to 7, characterized in that the movement elements (8.1, 8.2, 8.3) comprise levers, cable pulls, chains, rotary joints or the same (42).
12. A water lance blower according to one of the preceding claims, characterized in that additional passive stabilizing elements are provided for reliable fixing of the water lance (6), preferably concerning pressure or tension pre-stressed stabilizing elements.
13. A water lance blower according to one of the preceding claims, characterized in that the path sensors are angle and/or length sensors.
14. A water lance blower according to one of the preceding claims, characterized in that at least one more path sensor is provided than is necessary for determining the position, in order to increase the precision of positioning and availability.
15. A water lance blower according to one of the preceding claims, characterized in that at least one part of the water lance (6) can be cooled by appropriate means (45).
16. A water lance blower according to one of the preceding claims, characterized in that de water lance blower comprises a casing (31) that is sealed at least in the region of the hatch (2), that can be exposed to a sealing and cleaning medium.
17. A water lance blower according to one of the preceding claims, characterized in that the water lance (6) is formed to be shortened by providing the water supply (10, 11) to be angled once or multifold at a total of more than 70°, preferably more than 90° (20, 24; 39).
18. A water lance blower according to one of the preceding claims, characterized in that an extended settlement volume (20; 39) for the added water is provided in the end of the water lance (6) outside the heating installation, in particular an approximately spherical volume (20).
19. A method for operating a water lance blower according to one of claims 1 to 18, characterized in that the movement element is guided along given pre-calculated or previously memorized lines of movement with pre-calculated or previously memorized, in particular position depending variable speeds.
20. A method according to claim 19, characterized in that the respective current position of the water lance (6) is exactly determined relative to a reference position by means of length sensors and/or angle sensors, that are arranged on the movement elements (8.1, 8.2, 8.3) and/or on at least one separate path sensor arm, and said current position of the water lance (6) is used on-line for further control of the course of movement.
21. A method according to claim 20, characterized in that at least one more measured value of a path sensor than necessary for determining the position is measured and processed in order to increase the measuring accuracy and the availability when a measuring sensor fails.

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