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EP 2 422 156 B1 |
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EUROPEAN PATENT SPECIFICATION |
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Mention of the grant of the patent: |
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14.08.2019 Bulletin 2019/33 |
(22) |
Date of filing: 21.04.2010 |
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(51) |
International Patent Classification (IPC):
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International application number: |
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PCT/EP2010/055263 |
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International publication number: |
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WO 2010/122054 (28.10.2010 Gazette 2010/43) |
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(54) |
DEVICE AND CLEANING INSTALLATION FOR REMOVING SOOT OR THE LIKE
Vorrichtung und Reinigungsanlage zum Entfernen von Ruß oder dergleichen
Dispositif et installation de nettoyage pour l'élimination de suie ou similaires
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Designated Contracting States: |
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AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO
PL PT RO SE SI SK SM TR |
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Priority: |
21.04.2009 EP 09158305
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Date of publication of application: |
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29.02.2012 Bulletin 2012/09 |
(73) |
Proprietor: Aerovit A/S |
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8751 Gedved (DK) |
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Inventor: |
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- HANSEN, Knud Sundgaard
DK-8660 Skanderborg (DK)
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(74) |
Representative: Høiberg P/S |
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Adelgade 12 1304 Copenhagen K 1304 Copenhagen K (DK) |
(56) |
References cited: :
WO-A1-2005/054770 GB-A- 1 282 392 US-A- 2 155 205 US-A- 5 745 950 US-A1- 2008 250 598
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DE-B- 1 262 496 JP-A- 57 157 927 US-A- 5 509 607 US-A1- 2001 014 992
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Note: Within nine months from the publication of the mention of the grant of the European
patent, any person may give notice to the European Patent Office of opposition to
the European patent
granted. Notice of opposition shall be filed in a written reasoned statement. It shall
not be deemed to
have been filed until the opposition fee has been paid. (Art. 99(1) European Patent
Convention).
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[0001] The present invention relates to a device and cleaning installation for removing
soot or similar inside deposits on the inside of a processing system such as a boiler,
heat exchanger, flue gas filter or the like, by intermittently blasting a gaseous
medium into the processing system. A cleaning installation according to the preamble
of claim 1 is known from
EP 1 134 537 A2.
[0002] Boiler installation sediments of soot or the like often occur on the inside of heat
surfaces that are in contact with flue gasses. This seriously reduces the thermal
conductivity and thereby also the efficiency of the boiler if not removed.
[0003] For removal of these deposits, methods are known, such as mechanical cleaning or
blast cleaning using steam, water or air as cleaning means for the removal of soot.
Some of these cleaning methods require shut-down of the boiler installation whilst
other methods allow for the boiler to remain in operation at a reduced level of efficiency.
[0004] The cleaning equipment is subjected to a heat and corrosive impact from the gasses
inside the boiler installation. Due to the aggressive environment in the flue gasses,
the cleaning equipment is often mounted on the outside of the gas chamber of the boiler.
Permanent mounting of the blasting tubes in the boiler wall may cause a deterioration
of the components in the soot removal equipment exposed to the gasses inside the boiler
and in particular to valve and membrane components.
[0005] The components are in particular subject to corrosion due to the hot, aggressive
flue gasses during the off-cycles, i.e. when no air is blasted through the valve assembly,
the associated tube passage and into the boiler. When there is no forced airflow in
the valve assembly, flue gas will escape from the main gas stream in the boiler and
fill the passage space. This causes mechanical wear and corrosion of the exposed components
of the cleaning equipment which, in turn, reduces the cleaning efficiency and again
causes a drop in the efficiency of the boiler installation.
[0006] The cleaning equipment typically comprises a pressure vessel from which pressurized
air is fed to a number of diaphragm valves. The valves are controlled by control means.
[0007] The control means activates the valves in a pre-programmed sequence and the pipes
in the boiler governed by the associated valve are blasted with the pressurized air.
[0008] The air is blasted for 0.1-1 second at an interval of approx. 2-10 minutes. This
cleaning cycle, i.e. the duration and the frequency, can be adjusted according to
requirements, such as the type of fuel, the amount of fouling and the boiler output.
The pressure vessel is usually operated at about 7-11 bars. However, these parameters
may be adjusted in accordance with the actual needs of the boiler installation.
[0009] There are many different types of boilers in power plants. Particularly municipal
waste burning plants, bio-mass fuelled plants and waste heat recovery installations
generate corrosive flue gasses during the burning process.
[0010] A cleaning installation for removing soot is known from
EP 1 134 537 A2, wherein is disclosed a device for use in a cleaning installation for removing soot
or similar inside deposits in a flow channel in a processing system such as a boiler,
heat exchanger, flue gas filter or the like, by intermittently blasting a fluid or
gaseous medium into the processing system, said device comprising a flow passage,
between associated valve means and the flow channel, which is provided with an inlet
allowing for a continuous flow of protective gas around the flow passage into the
flow channel in the processing system.
[0011] It is an object of the invention to provide a device and a cleaning installation
for reducing soot or similar inside deposits on the inside of a cleaning installation.
[0012] The object is achieved by a device according to claim 1.
[0013] By using this device it is now possible to efficiently remove soot or other deposits
inside a cleaning installation. By having two valves and two flow passages arranged
in the described manner gives the possibility to blast at more than one position and
a better control of the supply of the gaseous medium to the processing system. This
greatly enhances the versatility of the device.
[0014] Preferably the flow passages comprise at least one direction means for directing
the gaseous medium. By directing the blast in a specific direction which can be adapted
to fit the characteristics of the processing system or the device itself one can enhance
the soot removing ability of the device and/or the durability of the device.
[0015] According to the invention, the device comprises rotation means for rotatably mounting
for rotatably mounting of the flow passage. The processing system may comprise a mounting,
such as a base, for rotational engagement with the device. Preferably, the mounting
comprises an engagement member having an opening with a circular cross section, which
may be adapted for engagement with a cylinder member, which engagement may comprise
ball bearings. Rotation of the flow passages allows for blasting in different directions
which improves the versatility and effectiveness of the device. A rotatably mounting
of flow passage is also interpreted as rotatably mounting of the device as when the
entire device is rotating so is the flow passages. Further one could rotate only the
directing means which in this case would then be interpreted as the flow passage.
[0016] In a second preferred embodiment of the invention, the rotating means comprises an
electric motor, which may engage with the device by means of gears. The rotation means
allows for easy rotation of the device, which is advantageous for cleaning otherwise
non-accessible or difficult available inside areas, components and the like of the
processing system.
[0017] In one embodiment of the invention, a gaseous medium and/or a fluid medium is used
in the blasting procedure, which may be advantageous for cleaning heavily soiled surfaces
or for cleaning where a fluid is needed for dissolving solids, liquids, gaseous solutes
and the like.
[0018] In a preferred embodiment of the invention, the device and/or at least one flow passage
is retractably mounted to the processing system. By a retractable mounting, the device
may easily be taken out of the processing system for cleaning and in operation; the
device may be retracted and deployed for blasting a larger range of inside areas of
the processing system. In one embodiment, the device is slidably mounted.
[0019] In another preferred embodiment of the invention, at least one flow passage and/or
at least one directing means comprises at least one tubular member. The tubular member
may have a circular cross section and may be a pipe, which is often advantageous when
delivering or conveying pressurized air or the like.
[0020] In another preferred embodiment of the invention, at least one directing means comprises
a tubular member having a curved shape. A tubular member with a smooth curved form
may be used for directing the blasts with minimal resistance for the pressurized air
moving or blasted through the tubular member. In one embodiment, the flow passage
and the directing means comprise tubular members which allow low resistance transmission
of pressurized air and the like. Low resistance transmission may provide more blast
power delivered against soot and the like by the pressurized air compared to transmission
involving considerable or large resistance.
[0021] In another preferred embodiment of the invention, at least one flow passage comprises
a tubular member, with a tubular member axis, and a directing means extending from
the end of the tubular member, said directing means having at least one outlet defining
an outlet flow direction with an axis having an angle with respect to the tubular
member axis. The angle may advantageous take a value from 0-90 degrees. Preferably,
the angle is less than 90 degrees, such as 60 degrees since the blasting effect may
decline with large angles. When a blast is produced, the recoil force may be balanced
out by other forces, such as forces from another blast produced at the same time and
forces related to structure reinforcements.
[0022] In another preferred embodiment of the invention, the device comprises a plurality
of flow passages mounted in pairs wherein each pair comprises: a first and a second
tubular member defining a common tubular member axis, and a first and second direction
means having a first and second outlet defining first and second outlet flow directions
with first and second axes having first and second angles with respect to the common
tubular member axis, preferably the first and second angles are equal in magnitude.
The first and second tubular members may have different lengths, whereby a larger
span of reachable cleaning area or cleaning space is achieved. In one embodiment of
the invention, the flow passages are mounted in combinations other than pairs, such
as in groups of odd numbers or in groups of even numbers larger than two.
[0023] In another preferred embodiment, the common tubular axis of a first and a second
tubular member in a pair, and the first and the second axes lie substantially in the
same plane, such that the first and second outlets are substantially oppositely directed,
whereby the forces, from the recoil produced by intermittently blasting through a
pair of flow passages, are substantially equal and oppositely directed. The forces
or components of the forces from the recoil may substantially cancel or cancel to
a large degree or to some degree. In addition, if the flow passages are of different
length, by which the device may reach different areas or space for blasting, the forces
or components of the forces may still substantially cancel or cancel to a large degree
or to some degree.
[0024] In another preferred embodiment of the invention, a plurality of flow passages comprises
a plurality of reinforcement members. The reinforcement members may serve for stability
and, in addition, the reinforcement members may strengthen the device in relation
to recoil forces.
[0025] In an embodiment of the invention, the device comprises a first connection member
and a second connection member for at least one flow passage, said first connection
member having a first flange with at least one first hole, said first flange adapted
for a plurality of engagements with a second flange of the second connection member,
said second flange having at least one second hole, preferably a curved elongated
hole, such that the first flange is adapted for a plurality of rotationally defined
engagements with the second flange, by which at least one first hole is connected
to a second hole. Preferably, the first and second flanges have a circular shape.
More preferably, a first hole is only connected to one second hole and vice versa.
Preferably, the second hole has an area larger than the area of the first hole, whereby
there is a large overlap area between the first and second holes when the first and
second flanges are engaged. This is advantageous, because it is easier to align the
first and second flange so that holes overlap and the risk of pressure build up due
to misalignment of the flanges is lesser. Preferably, the rotationally defined engagements
are discrete, such as one engagement per 15 degrees of rotation. Preferably, the first
and second flanges share a common axis passing through the center of each flange.
In one embodiment, one first hole and one second hole are provided per flow passage.
[0026] In one embodiment of the invention, at least one flow passage is provided with an
inlet allowing for a continuous flow of a protective gas around the flow passage into
the flow channel in the processing system. The flow passage may comprise an annular
space between an inner tubular and an outer tubular member, where the outer tubular
member is provided with an inlet providing a continuous gas flow around the flow passage
into the flow channel in the processing system. Corrosion is reduced since a cushion
of air is generated at the end of the flow passage during the off-cycles of the cleaning
operation, as air is constantly drawn or forced in through the inlet. This means that
the components are covered by this cushion and protected against the corrosive gasses
in the heat exchanger or the like. Hereby, the valve means are protected from corrosion
and tests have shown that durability of the exposed components facing the inside of
the boiler or the like has been improved significantly. This also means that the components,
such as the valve housing, may be produced in a cheap material such as cast iron without
compromising the durability of the valve means.
[0027] Preferably the device comprising a valve assembly, said valve assembly comprising
a diaphragm valve including a first and second chamber, said first chamber receiving
pressurized air from an air supply, and said second chamber being provided with valve
control means and an outlet for release of air in the chamber when activating the
diaphragm valve, and a valve outlet connected to the device, wherein flow communication
means is provided between the outlet of the second chamber and an inlet of a flow
passage of the device.
[0028] In a second aspect of the invention, there is provided a cleaning installation comprising
a device in one of the embodiments described above.
[0029] A third aspect of the invention is a device for use in a cleaning installation for
removing soot or similar inside deposits on the inside of a processing system such
as a boiler, heat exchanger, flue gas filter, flow channel or the like, by intermittently
blasting a gaseous medium into the processing system, said device comprising a valve
means, at least one flow passage extending from associated valve means into the processing
system, wherein the flow passage is provided with an inlet allowing for a continuous
flow of a protective gas around the flow passage into the flow passage in the processing
system, wherein said at least one flow passage comprises at least one direction means
for directing the gaseous medium.
[0030] By directing the blast in a specific direction which depends on the characteristics
of the processing system or the device itself one can enhance the soot removing ability
of the device and/or the durability of the device.
[0031] Preferably the third aspect of the invention could also have any of the features
of any on of the embodiments described above for the first aspect of the invention.
Brief description of the drawings
[0032] The invention is disclosed in more detail with reference to the accompanying drawings,
in which:
- Fig. 1
- is a schematic view of a cleaning installation according to one embodiment of the
invention,
- Fig. 2
- is a perspective view of the device according to one embodiment of the invention,
- Fig. 3
- is another perspective view of the device in Fig. 2,
- Fig. 4
- is a perspective view of the device according to another embodiment of the invention,
- Fig. 5
- is a perspective close up view of the device in Fig. 4, and
- Fig. 6
- is a perspective close up cut-away view of the device in Fig. 4.
Detailed description of the drawings
[0033] A skilled person would appreciate that for clarity purposes; in different figures,
same numerals are used to indicate the same component in the apparatus.
[0034] Fig. 1 shows a cleaning installation for pressurised air blast cleaning for removal
of sediments inside a heat exchanger, boiler or similar preferably tubular installation.
The installation comprises a number of valve assemblies 1 connected to a vessel 2
of pressurised air. The vessel 2 is in communication with the individual devices 1
through a main line 3 and associated supply lines 4, which lines may comprise a manifold.
The devices comprise valves 10 controlled by a control system 11 by which the operating
cycle of the individual devices 1 and the cleaning cycle as a whole is commanded.
The air blasts are conveyed by flow passages 5 and direction means 21.
[0035] One of the advantages of the cleaning installation of the present invention is that
it can be permanently installed in a processing system 9 in the way where only the
flow passage 5 is inside the processing system 9 and the control mechanisms such as
the gear 24 the motor 23 and the control means 11 are positioned outside the processing
system 9, this is beneficial due to the normally rather harsh environment inside the
processing system 9. The device is mounted via a flange that secures that no gas from
the inside of the processing system 9 can escape.
[0036] With reference to Fig. 2 and Fig. 3, according to one embodiment of the device, there
is provided a valve assembly 1 comprising a flow passage 5 having a tubular member
with an end portion having a curved shape 21 for directing the blast, said flow passage
5 extending from a valve 10 being connected to an associated supply line opening 4'
for pressurized air and being connected to a control means 11 through a connecting
chamber for controlling the valve 10. The valve assembly 1 is rotatably mounted in
housing members 22 along with an electric motor 23 provided as a rotation means for
rotating the valve assembly 1 by engagement of a gears 24.
[0037] The valve 10 comprises a first and a second chamber separated by a diaphragm or a
membrane (not shown). When the valve 10 is activated by moving the diaphragm, pressurized
air flows from the first chamber to the valve outlet and into the flow passage 5.
The diaphragm is provided with a small aperture through which the pressurized air
flows into the second chamber and fills this chamber with air, so that equal pressures
are established on both sides of the membrane/diaphragm. The pressure in the second
chamber is applied to the entire surface of the membrane whereas only a minor portion
of the membrane is subjected to the pressure in the first chamber. This presses the
membrane against the valve exit and keeps the valve shut.
[0038] The second chamber is in communication with atmospheric pressure through a ventilation
opening in the control valve. In its resting position, a piston of the control valve
will keep the ventilation opening shut by retaining pressure in the second chamber
and thereby keep the valve shut between the blast-cleaning shuts. When the control
valve is activated, the piston is retracted and the pressurized retention air of the
second chamber is quickly released out through the ventilation opening 18. The opening
18 is provided with an air flow tube 16 connected to the inlet 8 of the flow passage
device 5 at the opposite end. Hereby, an explosion-like sound is avoided from the
quick release of air when the valve is activated. Instead, the air is led into the
flow passage, whereby the blasting effect of the valve may even be slightly enhanced.
[0039] The tubular pipe 16 is provided with an external supply of cool air through a conduit
17. When the valve is shut and no air is released through the flexible tube 16, external
air may still be sucked into or blown into the flow passage through the inlet 8. The
external air may either be atmospheric air or any other gaseous air supply.
[0040] Referring now to Fig. 4-6, a second embodiment of the device is shown, wherein the
valve assembly 1 has four flow passages 5 with different lengths and associated tubular
end portions having a curved shape 21. By intermittently blasting through a pair of
flow passages 5 with opposite directed end portions 21, the forces from the recoil
are substantially equal and oppositely directed, by which the forces may substantially
cancel or cancel to some degree. The flow passages 5 are connected to connecting members
25 comprising circular flanges. Circular reinforcement members 26 connect the flow
passages 5. In Fig. 5, four flow passages 5 are shown connected to a first circular
flange 27. As shown in Fig. 6, the first circular flange 27 having four circular holes
28, only two shown, is connected to a second circular flange 29 having four curved
elongated holes 30, only two shown, such that an overlap between the circular holes
28 and the elongated holes 30 is easily achieved and such that the first and second
circular flange 27, 29 may be aligned in several rotational positions against each
other while the four elongated holes 30 are still connected to the four circular holes
28. The flow passage is conveyed from the four curved elongated holes 30 by elongated
curved adaption members 31 towards the valves 10. Thus when rotating the flow passages
5 a intermittently blasting through each of the flow passages 5 are achieved.
[0041] In one embodiment, four adaption members are simply provided as four separate quarter
annular chambers in a housing having an annulus formed cross section.
[0042] While specific and preferred embodiments of the invention have been shown and described
in detail above to illustrate the inventive principles, it will be understood that
variants to these embodiments may be provided without departing from the scope of
the invention as set forth in the accompanying claims. For instance, the device may
be used for removing other substances than soot.
1. A device for use in a cleaning installation for removing soot or similar inside deposits
on the inside of a processing system (9) such as a boiler, heat exchanger, flue gas
filter, flow channel or the like, by intermittently blasting a gaseous medium into
the processing system (9), characterised in that said device comprises a first valve (10) and a second valve (10) and two flow passages
(5) wherein, the device is adapted such that the first valve (10) can be fluidly connected
to the processing system (9) via one of the flow passages (5) and the second valve
(10) can be fluidly connected to the processing system (9) via the other flow passage
(5), simultaneously, and rotation means for rotatably mounting of the flow passages
(5) and wherein the flow passages (5) each comprise a tubular member having a curved
shape (21), characterised in that the curved shape (21) is configured such that rotation of the flow passages allows
for blasting in different directions.
2. A device according to claim 1, wherein the flow passages (5) comprise at least one
direction means for directing the gaseous medium.
3. A device according to claim 1 or 2, wherein the rotating means comprises an electric
motor (23).
4. A device according to any of the preceding claims, wherein at least one of the flow
passages (5) is retractably mounted to the processing system (9).
5. A device according to any of the preceding claims, wherein each tubular member having
a tubular member axis, and directing means extending from the end of the tubular member,
said directing means having at least one outlet defining an outlet flow direction
with an axis having an angle with respect to the tubular member axis, preferably the
angle is 0 - 90 degrees.
6. A device according to claim 1, wherein the device comprises a plurality of flow passages
(5) mounted in pairs wherein each pair comprises a first and a second tubular member
defining a common tubular member axis, and
a first and second direction means having a first and second outlet defining first
and second outlet flow directions with first and second axes having first and second
angles with respect to the common tubular member axis, preferably the first and second
angles are equal.
7. A device according to claim 6, wherein the common tubular axis, and the first and
the second axes lie substantially in the same plane, whereby the forces, from the
recoil produced by intermittently blasting through a pair of flow passages, are substantially
equal and oppositely directed.
8. A device according to claims 6 or 7, wherein a plurality of flow passages comprises
a plurality of reinforcement members, preferably one first hole and one second hole
are provided per flow passage.
9. A device according to any of the preceding claims, comprising a first connection member
and a second connection member for at least one flow passage (5), said first connection
member having a first flange (27) with at least one first hole (28), said first flange
(27) adapted for a plurality of engagements with a second flange (29) of the second
connection member, said second flange (29) having at least one second hole (30), preferably
a curved elongated hole, such that the first flange (27) is adapted for a plurality
of rotationally defined engagements with the second flange (29), by which at least
one first hole (28) is connected to a second hole (30).
10. A device according to any of the preceding claims, wherein at least one flow passage
(5) is provided with an inlet (8) allowing for a continuous flow of a protective gas
around the flow passage (5) into the flow channel in the processing system (9).
11. A device according to any of the preceding claims, comprising a valve assembly (1),
said valve assembly (1) comprising a diaphragm valve including a first and second
chamber, said first chamber receiving pressurized air from an air supply, and said
second chamber being provided with valve control means and an outlet for release of
air in the chamber when activating the diaphragm valve, and a valve outlet connected
to the device, wherein flow communication means is provided between the outlet of
the second chamber and an inlet of a flow passage of the device.
12. A cleaning installation comprising a device according to any of the preceding claims.
1. Vorrichtung zur Verwendung in einer Reinigungsanlage zum Entfernen von Ruß oder ähnlichen
inneren Ablagerungen auf der Innenseite eines Verarbeitungssystems (9), wie beispielsweise
eines Boilers, Wärmetauschers, Abgasfilters, Strömungskanals oder dergleichen, durch
intermittierendes Strahlen eines gasförmigen Mediums in das Verarbeitungssystem (9),
dadurch gekennzeichnet, dass die Vorrichtung ein erstes Ventil (10) und ein zweites Ventil (10) und zwei Strömungskanäle
(5) wobei die Vorrichtung so angepasst ist, dass das erste Ventil (10) über einen
der Strömungskanäle (5) fluidisch mit dem Verarbeitungssystem (9) verbunden werden
kann und das zweite Ventil (10) gleichzeitig über den anderen Strömungskanal (5) fluidisch
mit dem Verarbeitungssystem (9) verbunden werden kann, und Rotationsmittel zur rotierbaren
Befestigung der Strömungskanäle (5) umfasst und wobei die Strömungskanäle (5) jeweils
ein Rohrelement mit einer gekrümmten Form (21) umfassen, dadurch gekennzeichnet, dass die gekrümmte Form (21) so konfiguriert ist, dass die Rotation der Strömungskanäle
ein Strahlen in verschiedene Richtungen ermöglicht.
2. Vorrichtung nach Anspruch 1, wobei die Strömungskanäle (5) zumindest ein Richtungsmittel
zum Leiten des gasförmigen Mediums umfassen.
3. Vorrichtung nach Anspruch 1 oder 2, wobei das Rotationsmittel einen Elektromotor (23)
umfasst.
4. Vorrichtung nach einem der vorstehenden Ansprüche, wobei zumindest einer der Strömungskanäle
(5) einziehbar an dem Verarbeitungssystem (9) befestigt ist.
5. Vorrichtung nach einem der vorstehenden Ansprüche, wobei jedes rohrförmige Element
eine Achse des rohrförmigen Elements und Leitmittel aufweist, die sich vom Ende des
rohrförmigen Elements erstrecken, wobei die Leitmittel zumindest einen Auslass aufweisen,
der eine Auslassströmungsrichtung mit einer Achse, die einen Winkel in Bezug auf die
Achse des rohrförmigen Elements aufweist, definiert, wobei der Winkel vorzugsweise
0-90 Grad ist.
6. Vorrichtung nach Anspruch 1, wobei die Vorrichtung eine Vielzahl von Strömungskanälen
(5) umfasst, die paarweise angebracht sind, wobei jedes Paar
ein erstes und ein zweites rohrförmiges Element umfasst, das eine gemeinsame Achse
rohrförmiger Elemente definiert, und ein erstes und zweites Richtungsmittel, das einen
ersten und zweiten Auslass aufweist, der eine erste und zweite Auslassströmungsrichtung
mit ersten und zweiten Achsen, die erste und zweite Winkel in Bezug auf die gemeinsame
Achse rohrförmiger Elemente aufweisen, definiert, wobei vorzugsweise der erste und
zweite Winkel gleich sind.
7. Vorrichtung nach Anspruch 6, wobei die gemeinsame rohrförmige Achse und die erste
und die zweite Achse im Wesentlichen in der gleichen Ebene liegen, wodurch die Kräfte
aus dem Rückstoß, die durch intermittierendes Strahlen durch ein Paar von Strömungskanälen
erzeugt werden, im Wesentlichen gleich und entgegengesetzt gerichtet sind.
8. Vorrichtung nach Anspruch 6 oder 7, wobei eine Vielzahl von Strömungskanälen eine
Vielzahl von Verstärkungselementen umfasst, wobei vorzugsweise ein erstes Loch und
ein zweites Loch pro Strömungskanal vorgesehen sind.
9. Vorrichtung nach einem der vorstehenden Ansprüche, umfassend ein erstes Verbindungselement
und ein zweites Verbindungselement für zumindest einen Strömungskanal (5), wobei das
erste Verbindungselement einen ersten Flansch (27) mit zumindest einem ersten Loch
(28) aufweist, wobei der erste Flansch (27) für eine Vielzahl von Eingriffen mit einem
zweiten Flansch (29) des zweiten Verbindungselements ausgelegt ist, wobei der zweite
Flansch (29) zumindest ein zweites Loch (30), vorzugsweise ein gekrümmtes längliches
Loch, aufweist, sodass der erste Flansch (27) für eine Vielzahl von rotierend definierten
Eingriffen mit dem zweiten Flansch (29) ausgelegt ist, durch die zumindest ein erstes
Loch (28) mit einem zweiten Loch (30) verbunden ist.
10. Vorrichtung nach einem der vorstehenden Ansprüche, wobei zumindest ein Strömungskanal
(5) mit einem Einlass (8) vorgesehen ist, der einen kontinuierlichen Strom eines Schutzgases
um den Strömungskanal (5) herum in den Strömungskanal im Verarbeitungssystem (9) ermöglicht.
11. Vorrichtung nach einem der vorstehenden Ansprüche, umfassend eine Ventilanordnung
(1), wobei die Ventilanordnung (1) ein Membranventil einschließlich einer ersten und
zweiten Kammer umfasst, wobei die erste Kammer Druckluft aus einer Luftzufuhr aufnimmt
und die zweite Kammer mit Ventilsteuermitteln und einem Auslass zur Freisetzung von
Luft in der Kammer beim Aktivieren des Membranventils und einem mit der Vorrichtung
verbundenen Ventilauslass vorgesehen ist, wobei ein Strömungsverbindungsmittel zwischen
dem Auslass der zweiten Kammer und einem Einlass eines Strömungskanals der Vorrichtung
vorgesehen ist.
12. Reinigungsanlage, umfassend eine Vorrichtung nach einem der vorstehenden Ansprüche.
1. Dispositif destiné à être utilisé dans une installation de nettoyage pour l'élimination
de la suie ou similaires à l'intérieur de dépôts sur la partie intérieure d'un système
de traitement (9) tel qu'une chaudière, un échangeur de chaleur, un filtre de gaz
de combustion, un canal d'écoulement ou analogues, par la projection de manière intermittente
d'un milieu gazeux à l'intérieur du système de traitement (9), caractérisé en ce que ledit dispositif comprend une première soupape (10) et une seconde soupape (10) et
deux passages d'écoulement (5), le dispositif étant conçu de sorte que la première
soupape (10) peut être en communication fluidique avec le système de traitement (9)
par l'intermédiaire d'un des passages d'écoulement (5) et que la seconde soupape (10)
peut être en communication fluidique avec le système de traitement (9) par l'intermédiaire
de l'autre passage d'écoulement (5), simultanément, et des moyens de rotation pour
le montage en rotation des passages d'écoulement (5) et les passages d'écoulement
(5) comprenant chacun un élément tubulaire ayant une forme incurvée (21), caractérisé en ce que la forme incurvée (21) est conçue de sorte que la rotation des passages d'écoulement
permet de réaliser la projection dans différentes directions.
2. Dispositif selon la revendication 1, dans lequel les passages d'écoulement (5) comprennent
au moins un moyen de direction permettant de diriger le milieu gazeux.
3. Dispositif selon la revendication 1 ou 2, dans lequel le moyen de rotation comprend
un moteur électrique (23).
4. Dispositif selon l'une quelconque des revendications précédentes, dans lequel au moins
un des passages d'écoulement (5) est monté de manière rétractable sur le système de
traitement (9).
5. Dispositif selon l'une quelconque des revendications précédentes, dans lequel chaque
élément tubulaire présente un axe d'élément tubulaire, et des moyens de direction
s'étendant à partir de l'extrémité de l'élément tubulaire, lesdits moyens de direction
ayant au moins une sortie définissant une direction d'écoulement de sortie présentant
un axe formant un angle par rapport à l'axe de l'élément tubulaire, l'angle étant
de préférence compris entre 0 et 90 degrés.
6. Dispositif selon la revendication 1, le dispositif comprenant une pluralité de passages
d'écoulement (5) montés sous forme de paires, chaque paire comprenant un premier et
un second élément tubulaire définissant un axe commun d'éléments tubulaires, et
un premier et un second moyen de direction ayant une première et une seconde sortie
définissant des première et seconde directions d'écoulement de sortie présentant des
premier et second axes formant des premier et second angles par rapport à l'axe commun
d'éléments tubulaires, les premier et second angles étant de préférence égaux.
7. Dispositif selon la revendication 6, dans lequel l'axe commun d'éléments tubulaires,
et les premier et second axes se trouvent sensiblement dans le même plan, moyennant
quoi les forces, résultant du recul produit par la projection de manière intermittente
à travers une paire de passages d'écoulement, sont sensiblement égales et de directions
opposées.
8. Dispositif selon les revendications 6 ou 7, dans lequel une pluralité des passages
d'écoulement comprend une pluralité d'éléments de renforcement, un premier trou et
un second trou étant de préférence ménagés par passage d'écoulement.
9. Dispositif selon l'une quelconque des revendications précédentes, comprenant un premier
élément de liaison et un second élément de liaison pour au moins un passage d'écoulement
(5), ledit premier élément de liaison ayant une première bride (27) avec au moins
un premier trou (28), ladite première bride (27) étant conçue pour une pluralité d'entrées
en prise avec une seconde bride (29) du second élément de liaison, ladite seconde
bride (29) présentant au moins un second trou (30), de préférence un trou allongé
incurvé, de sorte que la première bride (27) est conçue pour une pluralité d'entrées
en prise définies en rotation avec la seconde bride (29), moyennant quoi au moins
un premier trou (28) est relié au second trou (30).
10. Dispositif selon l'une quelconque des revendications précédentes, dans lequel au moins
un passage d'écoulement (5) comprend une entrée (8) permettant l'entrée d'un écoulement
continu d'un gaz protecteur autour du passage d'écoulement (5) à l'intérieur du canal
d'écoulement dans le système de traitement (9).
11. Dispositif selon l'une quelconque des revendications précédentes, comprenant un ensemble
soupape (1), ledit ensemble soupape (1) comprenant une soupape à diaphragme comprenant
une première et une seconde chambre, ladite première chambre recevant de l'air sous
pression en provenance d'une alimentation en air, et ladite seconde chambre étant
pourvue de moyens de commande de soupape et d'une sortie pour la libération de l'air
dans la chambre lors de l'activation de la soupape à diaphragme, et d'une sortie de
soupape reliée au dispositif, des moyens de communication fluidique étant ménagés
entre la sortie de la seconde chambre et une entrée d'un passage d'écoulement du dispositif.
12. Installation de nettoyage comprenant un dispositif selon l'une quelconque des revendications
précédentes.
REFERENCES CITED IN THE DESCRIPTION
This list of references cited by the applicant is for the reader's convenience only.
It does not form part of the European patent document. Even though great care has
been taken in compiling the references, errors or omissions cannot be excluded and
the EPO disclaims all liability in this regard.
Patent documents cited in the description