EP1692450B1 - Kompakter russbl ser - Google Patents

Kompakter russbl ser Download PDF

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Publication number
EP1692450B1
EP1692450B1 EP04803482.1A EP04803482A EP1692450B1 EP 1692450 B1 EP1692450 B1 EP 1692450B1 EP 04803482 A EP04803482 A EP 04803482A EP 1692450 B1 EP1692450 B1 EP 1692450B1
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EP
European Patent Office
Prior art keywords
supply line
thermal plant
cleaning
heat
thermal
Prior art date
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Application number
EP04803482.1A
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German (de)
English (en)
French (fr)
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EP1692450A1 (de
Inventor
Volker Kruse
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Bergemann GmbH
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Bergemann GmbH
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    • 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
    • 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
    • F28G15/08—Locating position of cleaning appliances within 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
    • F28G3/00—Rotary appliances
    • F28G3/16—Rotary appliances using jets of fluid for removing debris
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S138/00—Pipes and tubular conduits
    • Y10S138/08—Bent shaped retained

Definitions

  • the invention relates to a thermal system with a device for cleaning heat exchange surfaces comprising at least one supply line for a cleaning fluid and at least one fluid distribution device, which is arranged at one end of the at least one supply line.
  • a device for cleaning heat exchange surfaces comprising at least one supply line for a cleaning fluid and at least one fluid distribution device, which is arranged at one end of the at least one supply line.
  • Such devices are usually used for cleaning boilers or other, acted upon with flue gases, components of thermal systems or incinerators.
  • the present invention relates to a method for carrying out a relative movement between the at least one supply line and a thermal system.
  • a first concept for cleaning such heat exchange surfaces for example, from the WO 01/65179 out.
  • Water lance blowers have a water lance, which is pivotally mounted with its mouth on or in a hatch of the heat system and a water jet can blow through the wall areas which can be reached from the hatch through the thermal installation which is in operation and is supplied with flames and / or flue gases.
  • the water lance blower described therein has at least two drive units for controlling the water lance and a holding device for fastening the water lance blower to the heat system, wherein parts of the water supply system are integrated into the holding device. This ensures that the size of the water lance blower is essentially limited to the pivoting range of the water lance.
  • Such water lances give a bundled jet of water through the firebox to the opposite wall.
  • a spalling of the soot, slag and ash is caused.
  • the impact area of the water jet generated by the water lance blower generally follows a certain predetermined path on the surface to be cleaned, also called blowing figure.
  • an apparatus for online boiler cleaning of waste incineration from the EP 1 256 761 known in which the supply of cleaning agents is realized by means of a vertically hanging from above, heat-resistant, flexible hose.
  • This tube is placed over a feed tube at the top of a draw and is moved in a predetermined manner from top to bottom, at the same time its nozzle distributes the detergent evenly over the circumference.
  • Such a device is particularly suitable where a lateral access to the heat system or the heat exchange surfaces to be cleaned is not possible.
  • the nozzle is preferably designed so that the escaping forces compensate each other when flowing out of the cleaning agent, the nozzle head therefore remains in a stable position.
  • so-called sootblowers are known, such as one example from the EP 0 391 038 evident.
  • the sootblower is also used for cleaning heating surfaces z. B. used in boilers and heat exchangers.
  • the soot blower is a pressurized fluid, for. As air or water or water vapor supplied, which is relaxed in the nozzles to the prevailing in the heat exchanger ambient pressure. The blast jets forming at the exit from the nozzles then serve with their high kinetic energy to remove the undesirable deposits on the heat exchanger surfaces.
  • These nozzles are arranged on a blowpipe, which is moved into the interior of the heat plants for carrying out the cleaning process.
  • sootblowers which in addition to a translational movement relative to the thermal system additionally perform a self-rotation movement. This ensures that the water jets emanating from the blowpipe propagate helically through the interior of the thermal system.
  • a blowpipe also has a considerable length, for example, up to 10 meters. This requires that in the environment of the sootblower After the cleaning process, the blowpipe is also completely driven out of the interior of the heat plant after the cleaning process. Due to this high space requirement, sootblowers, which have a particularly good cleaning effect due to their relative movement to the components in the interior of the thermal plant, can only be used to a very limited extent.
  • the US 4 424 769 A discloses a pressurized water reactor with a cleaning device whose lance has a rectangular cross-section. Although the lance within the pressurized water reactor is self-supporting due to the rectangular cross-section, it can not be bent in a vertical direction outside the pressurized-water reactor. The lance can therefore not be supplied in upper regions of the pressurized water reactor of a storage device in which a maintenance of the lance is more easily possible.
  • the present invention to solve the known in connection with the prior art, technical problems.
  • the device of the thermal system should be suitable to be permanently used even under the conditions prevailing on or in thermal power plants conditions, in particular have a low susceptibility to temperature and contamination.
  • a method is proposed, which on the one hand allows effective cleaning of heat exchange surfaces, but at the same time includes handling of the cleaning device, which allows a space-saving arrangement.
  • a heat plant is proposed with a device for cleaning heat exchange surfaces which is characterized by long operating cycles and a small footprint.
  • the present invention relates to a thermal plant with a device for cleaning heat exchange surfaces.
  • the device comprises at least one supply line for a cleaning fluid and at least one fluid distribution device, which is arranged at one end of the at least one supply line.
  • the device for cleaning the thermal system is now characterized by the fact that the at least one supply line is designed so that it can be inserted on the one hand transversely to the direction of gravity in the heat system and on the other hand its shape can be changed.
  • the at least one supply line is thus bendable in a first direction transverse to an expansion axis and made rigid in at least a second direction transverse to the expansion axis.
  • heat exchange surfaces include in particular all delimitation surfaces of boilers, combustion chambers, heat exchangers, pipe coils, etc. In particular, this means all surfaces that come into contact with the combustion products themselves, or the resulting exhaust gases, particles, etc. Such heat exchange surfaces z. B. can also be seen that accumulate during operation of these heat exchange surfaces soot, slag, ash or similar impurities as products of combustion.
  • a “supply line” is preferably meant a tubular or hose-like structure.
  • the materials of such a feed should be heat resistant and preferably also corrosion resistant.
  • the cross section or the diameter of such a supply line is to be selected in particular depending on the cleaning fluid used.
  • cleaning fluid come gaseous and / or liquid fluids into consideration, for example air, water, steam, etc.
  • it is possible that such a device has a plurality of such leads, for example, to perform a cleaning at different locations simultaneously, without moving the device itself or the supply line ,
  • further supply lines are provided, which are not used for a cleaning fluid but for other functions.
  • a fluid distribution device is arranged at the end of the at least one supply line.
  • end is meant the area of the supply line which is arranged in the vicinity or oriented in the direction of the heat exchange surfaces.
  • the lead usually has an opposite, opposite end, which connected to a stationary water supply system.
  • the supply line has a plurality of fluid distribution devices, but at least one is attached to the end.
  • slits, nozzles or the like are provided, which allow an exit of the cleaning fluid from the supply line. If necessary, these slots, nozzles, etc. can also vary their position or position relative to the end of the supply line.
  • the at least one supply line is designed such that it is bendable transversely to an expansion axis in a first direction and rigid in at least one second direction transverse to the expansion axis.
  • An "expansion axis" is to be understood in particular as the center axis of such a supply line.
  • the supply line can be arranged so that a substantial deformation does not take place solely due to gravity, even with an oblique or horizontal arrangement.
  • a supply line protrude beyond a guide or holding point at least with a certain support section and thereby have a substantially straight course.
  • a lead for example, can be inserted horizontally into the heat system, and formed self-supporting and straight there inside, while the supply line outside the heat system and to some extent near the heat system can be redirected. As a result, a particularly space-saving arrangement of such devices is possible.
  • the arrangement of the supply line is now in such a way that the bending stiffness is realized exactly in the direction in which otherwise due to gravity Bend would take place. This ensures that, for example, in the case of a horizontal arrangement of the at least one supply line, no bending or bending of the supply line takes place downwards.
  • the supply line can also be introduced horizontally into inner regions of the thermal installation via at least one certain support section, without these having to be supported there.
  • the partial bendability of the at least one supply line also enables it to be arranged in a space-saving manner after it leaves the heat installation.
  • the at least one feed line is bendable transversely to an expansion axis in a first direction and rigid at least in a second direction transverse to the expansion axis, wherein the device is arranged such that the second direction substantially corresponds to the direction of gravity.
  • the at least one supply line can be guided through a corresponding feed opening from the outside into inner regions of the heat installation, wherein means are provided for producing a bend upwards of the at least one feed line outside the heat installation.
  • a corresponding feed opening is provided at each point at which a supply line is to be passed through the heat plant.
  • a separate feed opening may be provided for each feed line, but it is also possible that a feed line is moved towards several feed openings, and thus a cleaning of different feed openings takes place successively.
  • the feed openings are preferably reclosable. This ensures that in the period in which the supply line does not extend through the feed opening, no gases or impurities can escape from the interior of the heat system.
  • the means for generating a bend of the at least one feed line are preferably provided directly in the immediate vicinity of the feed opening. This can ensure that the supply line is bent continuously immediately after leaving the feed opening and thus guided along the heat plant in a space-saving manner and can ultimately be stored.
  • As means for generating a bend for example, offer drive units, guides or similar components.
  • the at least one supply line has a substantially straight course within the heat system. This is preferably in a substantially horizontal position. In a corresponding embodiment of the feed opening this straight course can be pivoted. Thus, it is possible to realize not only a 90 ° angle between the direction of gravity and the extension axis of the lead, but preferably also an angular range of 135 ° to 45 °.
  • the at least one supply line has a predeterminable support section, wherein this support section extends at least over 1.5 m, is cantilevered and forms the substantially rectilinear course of the supply line within the thermal system.
  • the at least one supply line comprises at least one heat-resistant, flexible hose.
  • a hose is used, since this brings with regard to the particularly flexible nature of the deformation over the entire length of the feed line further advantages.
  • a heat-resistant hose may be made of metal, for example.
  • a high-temperature-resistant, corrosion-resistant steel offers.
  • the flexibility of the hose is limited at least insofar as there is a bending stiffness in at least the second direction transverse to the expansion axis.
  • This is preferably a hose designed as a corrugated tube, whose corrugation may also be covered by a protective sheath, e.g. a sturdy fabric that is protected against external contamination and / or damage.
  • means which limit the flexibility or the flexibility of the at least one tube towards a second direction.
  • These means can be realized in different ways. It is thus possible to position such means on the outside of the surface of the hose, to provide them on the inside of the hose and / or to provide the hose itself with such a means by a different choice of material or a different design.
  • these agents are themselves high temperature resistant, temperature protected positioned and / or (active / passive) cooled. As a cooling medium, for example, offers the cleaning fluid itself. Then, at least part of the means for restricting the flexibility of the hose in direct contact with the cleaning fluid inside the at least one hose are advantageously lapped by it.
  • the means may at least partially form a thermal bridge, so that a rapid removal of heat from hot spots is ensured (eg by means of materials of high thermal conductivity, etc.)
  • the design of the hose is such that the hose is limited in several directions in terms of its flexibility or flexibility.
  • Particularly preferred are arranged in the interior of the hose chain belts, which are limited pivotally substantially only in one plane.
  • the means comprise at least one component of the following: one-dimensionally pivotable holding members; Bend restrictor.
  • the components mentioned here are preferably mounted outside the supply line or the hose.
  • the "one-dimensionally pivotable holding members" can serve as a kind of receptacle for the hose.
  • the holding members are pivotally connected to each other via a hinge, which have stop edges that limit pivoting. In this case, the limitation of the pivot radius is carried out in such a way that in a stable position, the holding members have a straight course.
  • the holding members are preferably arranged on the side of the feed line or the hose, which is arranged starting from the expansion axis to the second direction.
  • the "curvature limiters" may be positioned on the surface near the first direction.
  • they can be designed so that a separate chain is fixed to two reference points on the surface. In a straight line of the supply line or the hose chains are stretched. Due to the fact that this chain prevents the two reference points from moving farther apart, they at least make the tube rigid in one direction. However, since such a chain does not resist that the two reference points approach each other, such bending or deformation may take place.
  • the at least one tube has at least two sheaths, wherein the cleaning fluid can flow inside the second sheath, and between the first sheath and the second sheath supporting elements are provided, which rigid the at least one lead in at least the second direction do.
  • the support elements which are basically also executable as a one-dimensionally pivotable holding members or curvature limiter, are here protected by the first jacket from external environmental influences.
  • the two shells may also be designed such that they are bendable or deformable in all directions, but the provision of the support elements between them limits the flexibility or flexibility of the entire hose.
  • the first jacket is again made of a heat-resistant and corrosion-resistant material, but the second jacket may be made of plastic or similar material, for example.
  • the at least one fluid distribution device is a nozzle head.
  • a nozzle head relates to a housing having a single or a plurality of nozzles arranged distributed frontally and / or circumferentially.
  • nozzles are for example slots, holes and / or special nozzle housing.
  • the fluid distribution device should be adapted to the desired place of use, in particular be designed so that, if appropriate, a targeted cleaning of predeterminable surfaces takes place.
  • the fluid distribution device is preferably designed or aligned such that only at least one angular region exists in the circumferential direction or in the longitudinal direction of the at least one tube, in particular therefore at least one blind spot region.
  • the at least one fluid distribution device is rotatable relative to the at least one supply line and / or can at the same time distribute cleaning fluid over the entire circumference.
  • the fluid distribution device comprises a drive or is connected to a drive, which allows a rotation relative to the hose.
  • a drive can be operated electrically or else via the cleaning fluid itself.
  • the fluid distribution device may be designed so that over the entire circumference cleaning fluid can be distributed.
  • the fluid distribution device it is possible, for example, for the fluid distribution device to have a type of baffle plate which forms an annular gap with a housing of the fluid distribution device.
  • the cleaning fluid impinging on the baffle plate is now diverted and emerges uniformly over the circumference through the annular gap.
  • At least one storage device is provided for the at least one supply line, wherein this is arranged bent in or on the at least one storage device at least partially bent toward the first direction;
  • the at least one storage device is a device for rolling up the at least one supply line.
  • a “storage device” Such devices are to be understood, which allow an arrangement of the at least one supply line in non-rectilinear course. In the simplest case, this can be a type of container into which the at least one feed line is introduced. According to their inherent flexibility or flexibility, the at least one supply line is stored in the container to save space.
  • a reel or a similar device for winding up the at least one feed line is proposed as storage device.
  • the storage device has drive means.
  • drive means include e.g. Motors, hoists, etc. and preferably support at least a portion of the movements of the supply line.
  • these drive means have the function of rotating the reel so that the lead wound up.
  • the supply line is usually wound only in one layer, ie without further layers of the same supply side by side or substantially in a plane perpendicular to the axis of rotation of the reel.
  • clamping means for example, have the function of ensuring that the supply line is wound on a reel with the same pretensioning, as is described, for example, in US Pat. can be realized with a slip clutch.
  • means are provided for determining the length of the at least one supply line with respect to a predefinable reference point.
  • Such means for determining the length of the at least one supply line with respect to a predefinable reference point allow an exact monitoring of the cleaning process. In particular, it should provide information be provided, up to what length currently the at least one supply line is already led into inner areas of a thermal system. In this way, the impact point of the cleaning medium can be determined. In this way, residence times, import and export speeds and / or other parameters can be matched precisely to the respective environments of the fluid distribution device.
  • at least one end position detection means can be provided, which identifies when the predefinable maximum or minimum length has been reached.
  • the device be provided with means for carrying out a relative movement of the at least one fluid distribution device and a reference point of the device.
  • This means in particular, drive systems which permit a relative movement, in particular the introduction and exit into a thermal installation.
  • the means are designed so that they allow a predeterminable speed of relative movement, wherein the speed is variable.
  • such means comprise at least one drive roller, which is frictionally in contact with the surface of the at least one supply line and is driven by a motor or the like.
  • the embodiment in which abut two pairs of rollers on opposite portions of the feed line, braced against each other and are driven together. The rotation of the drive rollers is converted into a translational movement of the hose or the at least one supply line due to the frictional engagement. This will be explained in more detail below with reference to the figures.
  • means for supplying the device with a cleaning fluid are provided, in particular at least one component of the following: a pump, a fluid flow measuring unit, an evaporator, a valve.
  • the pump is used to feed the cleaning fluid (especially water) in the device or the at least one supply line.
  • a cleaning is to take place, for example, with steam, u. U. additionally integrate an evaporator.
  • a valve may be provided for switching between cleaning fluids of different states of aggregation (for example liquid and vaporous) as required.
  • the mass flow of the cleaning fluid is preferably determined.
  • fluid flow measuring units are used.
  • the at least one supply line outside the heating system extends substantially in the direction of gravity or is arranged in or on at least one storage device.
  • This variant relates in particular to the case that the supply line is essentially bendable only in a first direction, which is essentially directed counter to gravity.
  • the storage device preferably offers a reel, which is attached to or on the heat system.
  • means are provided for sealing the at least one feed opening and / or for cooling the at least one feed line. Due to the fact that the supply port is an open connection between the environment and the interior of the thermal system, at least for the period in which the at least one supply line extends through the supply opening, means for preventing the escape of, in particular harmful, components Sealing provided. These can be used as a separate component or even z. B. be designed as airflow, etc.
  • the means for sealing are preferably attached to the heat system, but they may also be provided, for example, additionally on the device for cleaning.
  • means for cooling the at least one supply line are provided at the same time.
  • the at least one supply line with a kind of shroud air jet, which on the one hand prevents gases and impurities from passing through the feed opening to the outside, but at the same time hugging the one feed line and far into inner regions of the Thermal system ensures cooling of the supply line. It is also possible to provide such a cooling flow in the interior of the supply line itself.
  • means for automatic control of the device are provided. These means for controlling are preferably suitable for initiating, monitoring and / or initiating the drive means for a relative movement of the supply relative to a reference point of the device, the triggering or stopping of the cleaning fluid supply, the control of the supply line to the feed opening, etc. , This is preferably not only a semi-automatic control of the device, but a fully automatic. The control can be both part of the cleaning device and the thermal system.
  • a method for carrying out a relative movement between at least one supply line and a heat installation comprising at least the following steps is proposed: identifying a triggering parameter; Inserting the at least one supply line into the heat system through a corresponding feed opening; Activating a cleaning fluid flow through the at least one supply line in the direction of the thermal system; Identifying an end parameter; Moving the at least one supply line out of the heating system through the feed opening; in which the at least one feed line is deformed during insertion and removal at least partially repeatable.
  • This process is carried out with one of the above-described thermal plant.
  • a semi-automatic or fully automatic implementation of the method is also during operation of the thermal system in the foreground.
  • This "triggering parameter" can be permanently monitored, for example by a controller, but it is also possible that the tripping parameter by an action of the operator is fed into the controller. If such a trigger parameter is identified, the method for cleaning preferably begins automatically.
  • the at least one supply line is subsequently introduced into the thermal system through the corresponding feed opening.
  • a cleaning fluid stream is activated, which propagates through the at least one supply line in the direction of the heat system and finally exits the fluid distribution device.
  • the activation of the cleaning fluid stream can be realized for example via valves and / or pumps, wherein a continuous or a stepped increase of the cleaning fluid stream can be realized.
  • this end parameter is identified by the system and accordingly initiates the passage of the at least one feed line. Again, the fluid flow may continue, but this is not necessarily the case. Ultimately, however, the cleaning fluid flow is deactivated at the latest when the supply line has completely leaked out of the heat system.
  • the lead-out (as well as the insertion) of the at least one feed line can take place with a constant speed or else with a varying speed or holding stops.
  • the at least one feed line is deformed during insertion and execution at least partially repeatable.
  • This deformation includes the bending of the supply line. It is important that this deformation is repeatable. In other words, this is not a deformation which damages or destroys the at least one supply line, but rather a deformation which ensures a transfer of the at least one supply line back into a straight, straight course over and over again.
  • the supply line is preferably passed through a bending device, that is to say that a part of the supply line is bent, while a directly adjoining part extends in a straight line, in particular horizontally. This curved portion of the supply line migrates continuously over the length of the supply line when it is pushed through this bending device or the drive.
  • the repeatable deformation of the at least one supply line opens up the possibility of diverting the at least one supply line immediately after it has been led out, bending it over or the like and thus to save space on the heat installation. At the same time it is possible that the supply line can protrude far into inner areas of the heat system.
  • the length and / or a radius of curvature of the at least one feed line during insertion and removal be varied.
  • a change in the radius of curvature is made especially in the case of the "bendable sootblower".
  • the trigger parameter and / or the end parameter comprise at least one of the following parameters: time, temperature, heat flow, slag amount.
  • the cleaning cycle or the method for carrying out a relative movement between the at least one feed line and the heat installation takes place at regular time intervals (triggering parameters), the length of these time intervals essentially depending on the operating state or the utilization of the heat plant is dependent.
  • the cleaning duration or the beginning of the execution of the at least one supply line also takes place after a predefinable time interval, which is to be selected as a function of the operating state of the thermal system.
  • the cleaning process takes between 3 and 10 minutes, so that after such a period of time (end parameter) should be started with the out driving.
  • the temperature can also be taken as an indication of when to perform a cleaning cycle.
  • certain limit values with regard to the exhaust gas temperature, the temperature of the heat exchange media (cooling liquids, etc.), the temperatures in the walls of the thermal systems, etc. can be used. It is also possible to determine the heat flow through the heat exchange surfaces themselves and, starting from this, to activate the cleaning cycle.
  • methods are also possible, which start a cleaning process depending on the amount of slag, which is detected visually or metrologically. Basically, it should be noted that Any combination of different parameters as a trigger parameter or end parameter is possible.
  • Fig.1 shows schematically and in a partial cross-section, a heat plant 24 with a device for cleaning heat exchange surfaces 1.
  • the illustrated device comprises a supply line 2 for a cleaning fluid 3 and a Fluidverteil sensible 4, which is arranged at one end 5 of the supply line 2.
  • the heat plant 24, which is shown here in section, has a plurality of feed openings 26 arranged one below the other. Through these feed openings 26, the feed line 2 together with the fluid distribution device 4 is introduced into inner regions of the heat plant 24. There, the supply line 2 extends at an angle 27 to the direction of gravity 25 self-supporting, that is, without an additional guide.
  • the angle 27 is preferably in the range of 90 ° (+ - 10%), but under certain circumstances, the feed opening 26 is formed so that the supply line 2 with its straight course near the end 5 pivotally, so that the angle 27 in a range of For example, 45 ° to 135 ° can vary.
  • the pivoting is preferably carried out only in a plane which is defined by the direction of gravity 25 and the position of the corresponding feed opening 26.
  • a frame 31 is provided, on which a storage device 17 is attached to the supply line 2.
  • the storage device 17 is designed here as a reel, on which the supply line 2 is wound.
  • the reel or storage device 17 is rotatable in the direction of movement 30, wherein preferably the winding-up process is supported or ensured by a spring mechanism.
  • This storage device 17 or the (other, second) end of the supply line 2 located there is connected to a device for providing cleaning fluid.
  • This comprises various means for supplying the device, wherein initially a pump 20 is provided, and if necessary via a valve 23, the pumped cleaning fluid 3 via an evaporator 22 or directly to the storage device 17 is passed.
  • a fluid flow measuring unit 21 is additionally provided so that the generated fluid flow can be determined.
  • the valve 23 can also be used to start the cleaning process.
  • a pressure measuring and / or adjusting device for determining the pressure of the cleaning fluid in the at least one tube 2 is provided. This is arranged, for example, near the transition from the at least one hose 2 to a permanently installed (pipe) pipe system. This device monitors and / or regulates the pressure or the amount of cleaning fluid flowing through the hose in order in each case to ensure the desired (in particular constant) pressure at the fluid distribution device 4. In addition, disturbances, wear, soiling, etc. of the fluid distribution device 4 can be detected in this way, so that any necessary repair work can be initiated.
  • a housing 35 is also arranged, which is movably mounted on the housing 31.
  • a translational displacement relative to the frame 31 (as indicated by the direction of movement 30) is ensured.
  • the supply line 2 can be inserted into different feed openings 26.
  • the storage device 17 is simultaneously moved along, so that the supply line 2 between the storage device 17 and the housing 35 is preferably arranged substantially parallel to the direction of gravity 25.
  • a storage device 17 can be provided very simply if, instead of unwinding the supply line on lifting techniques or storage techniques with free / bonded roles is used.
  • An essential function of such a storage device is to arrange the supply line between a fixed (cleaning fluid) port and the Fluidvermaschineinrichung in a space that is not needed for the operation of the thermal system.
  • means for carrying out a relative movement of the at least one fluid distribution device 4 from a predefinable reference point 19 of the device are provided.
  • these means comprise a plurality of roller pairs 41, which are frictionally in contact with the supply line 2.
  • These roller pairs 41 are driven by means of a drive 32, whereby the individual rollers rotate.
  • the frictional engagement with the feed line 2 causes the feed line 2 to be pushed between the roller pairs 41.
  • the fluid distribution device 4 is moved in the illustrated embodiment to the right or left.
  • the roller pairs 41 are designed so that they directly cause a bending or deformation of the supply line 2.
  • a length measuring device 33 is provided near the reference point 19, with which it is possible to determine how far the fluid distribution device 4 has already penetrated into inner regions of the thermal system 24.
  • a cooling / sealing air supply 29 is provided in the housing 35, which preferably provides a kind of jacket jet around the supply line 2 to the feed opening 26. This prevents impurities or flue gases from escaping from inner areas of the thermal system 24 to the outside.
  • the means for providing the cleaning fluid 3, the length measurement 33, the drive 32 and / or the cooling / sealing air supply 29 are preferably connected to a controller 24, the semi-automatic or a fully automatic import or export of Fluidverteil issued 4 with respect to the heat plant 24th guaranteed.
  • Fig. 2 schematically shows a first embodiment of a "bendable Rußbläsers" or its supply 2.
  • the feed 2 which is designed here as a hose 9, has a connection 26 which serves to connect the hose 9 to a stationary water supply system.
  • the hose 9 has an end 5 to which a nozzle head 15 is attached.
  • this has a straight expansion axis 7, which substantially corresponds to a center axis of a round or cylindrical feed line 2.
  • the feed line 2 is bendable in a first direction 6 transversely to the expansion axis 7 and rigid in at least a second direction 8 transverse to the expansion axis 7. This means that a bend of the hose, as shown in dashed lines above, down is not possible. Upwards, a bend can be realized up to a predefinable radius of curvature 28 (eg up to 400 mm or 500 mm).
  • such a hose 9 preferably depends vertically near the heat plant 24 down and is then bent into a horizontal position. Subsequently, a portion of the length 18 of the tube 9 is pushed into inner regions of the heat plant 24.
  • the hose 9 or the supply line 2 is designed to be cantilevered at least over a predefinable support section 37, ie, no guide means for fixing the horizontal position are required via this support section 37.
  • This support section 37 extends at least over 1.5 m, preferably over 2 m, and for special applications over 3 m. If it is intended to introduce the tube 9 with a length 18 of more than about 2 m (eg 8 m or even 12 m), the use of guide means is recommended, for example at predetermined intervals (preferably about 2 m) the tube 9 support.
  • Fig. 3 shows a further embodiment of a bendable supply line 2, which in turn is designed as a hose 9.
  • This hose 9 has two shells 12, 13, wherein in the interior of the second shell 13, the cleaning fluid 3 can flow, and between the first sheath 12 and the second sheath 13 supporting elements 14 are provided which the supply line 2 in at least the second direction 8 rigid do.
  • the second jacket 13 in turn has the expansion axis 7 centrically.
  • the support elements 14 are substantially cup-shaped, so that a flexural rigidity is ensured not only in a second direction 8 parallel to the direction of gravity 25, but also a flexural rigidity in all directions perpendicular thereto.
  • a bending of the tube 9 is possible.
  • the support elements 14 are connected to each other via joints 38, wherein in each case a stop 39 is provided, which causes a limitation of the pivoting angle. In the illustrated embodiment, this means that the support elements 14 near the stop 39 can indeed move apart from each other, but a downwards bending beyond the straight arrangement is not possible due to the stop 39.
  • Fig. 4 shows yet another embodiment of the supply line 2.
  • the supply line 2 on its surface on the one hand curvature limiter 11 and lower holding members 10.
  • a fluid distribution device 4 is provided at the end 5 of the supply line 2. This is designed so that it is at least partially rotatable relative to the supply line 2 and thus at the same time can distribute 16 cleaning fluid 3 over the entire circumference.
  • the rotation of the fluid distribution device 4 is effected in that a paddle wheel 40 is provided in the fluid flow, which causes a rotational movement of the nozzle head 15 due to the Vorbeiströmens of the cleaning fluid.
  • the nozzle head 15 has a plurality of nozzles distributed over the circumference 16, through which the cleaning fluid 3 ultimately exits.
  • Fig. 5 shows another, not belonging to the invention embodiment of the supply line 2, wherein this is telescopic here.
  • the telescopic design of the supply line 2 to the heat system 24 is shown in the state when no cleaning process takes place.
  • the supply line 2 is then provided with a drive 32, which makes it possible for the different segments 42 of the supply line 2 to be displaced relative to one another so that they can extend into inner areas of the heat installation 24, see. dashed line. Also in this way a space-saving sootblower is realized.
  • FIG. 6 discloses yet another embodiment of a cleaning device. Unlike the variant in Fig. 1 Here is also the storage device 17 carried out mobile, so it can be moved together with the housing 35 to the desired feed opening 26 of the heat plant 24. This has the advantage, among other things, that the required length of the supply line can be significantly reduced. Since the storage device is moved directly in front of the feed opening 26, essentially only one feed line 2 with a length 18 has to be provided which corresponds to the desired penetration depth into the heat plant 24.
  • the illustrated device for cleaning heat exchange surfaces 1 comprises a supply line 2 for cleaning fluids and a fluid distribution device 4, which is arranged at one end 5 of the at least one supply line 2. It is the Feed line 2 in a first direction 6 transversely to the expansion axis 7 bendable and executed in a second direction 8 rigid.
  • the housing 35 includes, in addition to the storage device 17, a plurality of other components of the cleaning device with a.
  • a cooling / blocking agent supply 29 can be recognized from the housing 35, by means of which a type of jacket jet of air is generated around the supply line 2 towards the outlet 47.
  • the required blower 48 is also integrated in the housing 35.
  • the pairs of rollers 41 are profiled according to the outer shape of the supply line 2 and are driven synchronously via a motor 49 and gears 50 at predetermined speeds and contact forces. In this case, these roller pairs 41 are arranged so that they simultaneously cause a deflection of the supply line 2 in a different, here horizontal direction.
  • this is designed as a narrow reel, which is designed for a single-layer winding of the feed line 2 designed as a hose. Accordingly, the reel in the direction of the axis of rotation 45 is relatively narrow, in particular only slightly wider than the diameter of the feed line 2, so that a good guide is given during the winding or unwinding.
  • the reel are also associated with drive means 43, which cause a rotation of the reel.
  • a clamping means 44 a slip clutch is interposed here, wherein both the drive means 43 and the clamping means 44 are preferably arranged within the housing 35.
  • This housing 35 with the components contained therein can now be positioned in front of a feed opening 26 and by means of the operating element 46 manually and / or e.g. be activated due to an identified degree of contamination of the heat exchange surfaces to be cleaned 1.
  • the cleaning device can be operated semi or even fully automatic.
  • a plurality of mobile cleaning devices according to the invention are provided for a thermal plant, wherein these can preferably each proceed in a horizontal working area.
  • FIG. 7 schematically shows an embodiment of the supply line as a hose 9 with a Fluidverteil observed 4.
  • the hose 9 is in this case designed with a single jacket 12, in which during the cleaning process and the cleaning fluid is passed.
  • a chain belt 52 is arranged, which is responsible for the flexural rigidity of the hose 9.
  • the links of the chain belt 52 can be pivoted from the position shown only upwards.
  • the chain belt 52 is made of a stainless, heat-resistant material, such as steel or plastic. Advantage of the arrangement of the chain belt 52 with direct contact to the cleaning fluid 3, which is given as an effective cooling, even if the cleaning is performed during operation of the heat plant 24.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning In General (AREA)
EP04803482.1A 2003-12-05 2004-12-03 Kompakter russbl ser Active EP1692450B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10357021A DE10357021A1 (de) 2003-12-05 2003-12-05 Kompakter Rußbläser
PCT/EP2004/013755 WO2005054770A1 (de) 2003-12-05 2004-12-03 Kompakter russbläser

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EP1692450A1 EP1692450A1 (de) 2006-08-23
EP1692450B1 true EP1692450B1 (de) 2018-10-03

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EP (1) EP1692450B1 (ja)
JP (1) JP5127230B2 (ja)
CN (1) CN1890527B (ja)
DE (1) DE10357021A1 (ja)
WO (1) WO2005054770A1 (ja)

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Also Published As

Publication number Publication date
CN1890527B (zh) 2011-06-15
US8157921B2 (en) 2012-04-17
JP2007513312A (ja) 2007-05-24
EP1692450A1 (de) 2006-08-23
DE10357021A1 (de) 2005-07-07
US20060260652A1 (en) 2006-11-23
JP5127230B2 (ja) 2013-01-23
CN1890527A (zh) 2007-01-03
WO2005054770A1 (de) 2005-06-16

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