EP3473949B1 - Anlage zur entschlammung für einen heisswasser-heizkreis - Google Patents

Anlage zur entschlammung für einen heisswasser-heizkreis Download PDF

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Publication number
EP3473949B1
EP3473949B1 EP18290010.0A EP18290010A EP3473949B1 EP 3473949 B1 EP3473949 B1 EP 3473949B1 EP 18290010 A EP18290010 A EP 18290010A EP 3473949 B1 EP3473949 B1 EP 3473949B1
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EP
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Prior art keywords
heating circuit
desludging
pressure
cleaning water
air
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EP18290010.0A
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English (en)
French (fr)
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EP3473949A1 (de
EP3473949C0 (de
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Valéry Bogos
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/0042—Cleaning arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/0092—Devices for preventing or removing corrosion, slime or scale
    • 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
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents

Definitions

  • the present invention relates to a sludge removal installation for a hot water heating circuit of a building, as well as a method of operating this sludge removal installation.
  • the hot water heating circuits of any building whose interior temperature should be regulated generally comprise a closed water circuit comprising a boiler, a circulation pump and radiators which, placed in different rooms of said building, receive the flow of hot water distributed by the boiler to dissipate calories.
  • Various means of regulation make it possible to adjust the flow rates in each radiator according to the heating required in the rooms.
  • a known type of heating circuit cleaning machine presented in particular by the document EP-A1-1099488 published May 16, 2001 , comprises on a carriage a reservoir of product sludge removal, a water propulsion pump containing such a product and two three-way valves with simultaneous control.
  • the pump By connecting the cleaning machine to the heating circuit, the pump propels the cleaning water containing the sludge removal product throughout the circuit.
  • the two three-way valves with simultaneous control make it possible to easily reverse, with a single control, the direction of circulation of the cleaning water, which makes it possible to act more effectively on deposits found in certain places. of the circuit, to dissolve them and carry them away.
  • the cleaning machine in question can also comprise a sludge pot, which then receives the passage of the cleaning water in order to allow the sludge to settle inside and to be able to recover, for example with magnets, the metal particles. circulating in this fluid.
  • Rinsing water is then circulated to eliminate traces of the sludge removal product.
  • This type of machine equipped with two three-way valves makes it possible to carry out, after a single connection on the heating circuit, the two directions of circulation of the fluid as well as the rinsing, and this without having to disconnect and reconnect pipes, this which would have the inconvenience of requiring time and would risk causing drips and soiling in the work space.
  • Another known process for cleaning a heating circuit uses a cleaning machine comprising a pump, propelling cleaning water in one direction, then after various inversion maneuvers, in the other direction, and an injection system of air which continuously or jerkily adds pressurized air to the fluid.
  • the air bubbles moving in the heating circuit create mechanical stresses which help the detachment and suspension of deposits in this circuit.
  • the machines can make it possible to control the flow rate of the fluid in the heating circuit, in particular by adjusting the speed of the pump.
  • this equipment does not provide for the use of non-return valves allowing it to operate in reverse flow of fluids by immediate and simple switching.
  • the manometers used in said installation are all used in accordance with their usual destination, to measure the pressure of the fluid in a specific place, namely the point where they are installed, they are never used to measure between them a possible difference in pressure likely to then lead the user to modify the flow rate of the cleaning water.
  • the object of the present invention is in particular to avoid these drawbacks of the prior art.
  • An advantage of this sludge removal installation is that the pressure gauges make it possible to constantly check the pressure applied in the heating circuit, for circulation in one direction or the other, which makes it possible to adjust this pressure in particular by adjusting the pressure delivered by a circulation pump or by the air injection system, in order to avoid incidents due to overpressure.
  • the non-return valve on each control system allows, without the intervention of an operator, in particular when reversing the direction of circulation in the heating circuit, to inject air without the risk of causing a return of fluid in the means of circulation of cleaning water, or in other sources of supply such as the boiler of the heating circuit.
  • the sludge removal installation according to the invention may also comprise one or more of the following characteristics, which may be combined with each other.
  • each control system comprises an air injection valve for injecting air into the cleaning water, said injection valve being arranged between the non-return valve and the pressure gauge.
  • the means for injecting air into the cleaning water are integrated into the means for controlling the circulation of the cleaning water.
  • the pressure gauges can include a means for automatically detecting a pressure threshold.
  • each control system comprises an isolation valve for supplying both the blocking valve and the non-return valve.
  • each control system comprises, for each end of the heating circuit, a safety valve.
  • said installation comprises an air compressor capable of injecting air alternately towards one or the other of the two ends of the heating circuit.
  • the installation according to the invention comprises an inversion block connected on the one hand to the two control systems, and on the other hand to an outlet delivering pressurized water to the heating circuit, and to a return receiving the water of this circuit of this heating, comprising means making it possible to reverse the connection of the output and the return.
  • the reversal unit comprises four flow reversal valves, each arranged between a pipe on the one hand, and the outlet or return on the other.
  • the installation according to the invention may comprise a pump delivering the cleaning water under pressure to the outlet and receiving this water by the return.
  • the invention also relates to a method of operating a sludge removal installation according to claim 10.
  • said method will provide for alternating the direction of circulation of the cleaning water in the heating circuit.
  • the method according to the invention will provide for performing an injection of air in a jerky manner.
  • the process will consist of closing the blocking valve of the control system arranged downstream of the heating circuit to be cleared as well as the injection valve of the another control system and, conversely, to open the blocking valve of the aforementioned second control system as well as the injection valve of the aforementioned first control system.
  • FIG. 1 presents a heating circuit for a building 2 to be cleared of sludge, comprising radiators arranged in series between an upstream connection end 6, receiving hot water from a boiler, and a downstream connection end 8 at the outlet, these ends representing the flow and return of this heating circuit.
  • radiators 4 of the heating circuit 2 to be cleared are represented, this circuit therefore possibly, among other things, comprising a boiler or other equipment connected to the upstream 6 and downstream 8 ends. .
  • the sludge removal installation comprises a propulsion pump 10 connected to a closed circuit comprising in series: a first conduit 12, a first control system 14, the heating circuit 2 entering via the upstream end 6 and exiting via the end downstream 8, a second control system 16, and finally a second conduit 18 returning to the pump.
  • the pump 10 can control a circulation of cleaning or rinsing water in both directions of the closed circuit.
  • the pump 10 may optionally include a sludge removal pot 38, with an automatic means of connection to the return pipe from the closed circuit arriving at this pump, in order to recover the sludge coming from the heating circuit 2 during cleaning.
  • the sludge removal pot 38 can be arranged outside the pump 10, with valves automatically reversing the connections on this pump according to the direction of circulation, in order to place this pot systematically on the return pipe of the circuit.
  • each control system 14, 16 comprises, coming from the first conduit 12 or the second conduit 18, an isolation valve 20, then a first three-way connector 30 which supplies a non-return valve 22 passing only the flow coming from the isolation valve, and blocking the other direction, and in parallel a blocking valve 24.
  • the non-return valve 22 and the blocking valve 24 are then connected to a second three-way connector 32 which supplies the upstream end 6, or respectively the downstream end 8, of the heating circuit 2.
  • Each control system 14, 16 is further provided with a pressure gauge 26 and a safety valve 28.
  • a pressure gauge 26 comprising a display dial in the example shown
  • a safety valve 28 calibrated at three bars is arranged in series, respectively between each second three-way connector 32 and the connection end 6 or, depending, 8 of the heating circuit 2.
  • the two safety valves 28 of the two control systems 14, 16 constitute with their calibration pressure a safety adapted to the mechanical resistance of the heating circuit 2, in order to evacuate the fluid in the event of overpressure towards a low evacuation conduit pressure 34 which is advantageously connected to a sewer 64.
  • pressure gauges 26 it should be understood here that, under the term "pressure gauges", it is meant for the entire description of the present application that it is generally a matter of devices allowing the measurement of a pressure , mechanical or electronic, such as simple pressure gauges, pressure sensors, pressure transmitters, pressure transducers, etc ... some of which convert the measured pressure into an analog or digital output signal. In the latter cases, it is conceivable that the measuring device concerned would also be able to send a control signal to the isolation valve 20 to close it in the event that the pressure measured by said device becomes greater than three bars. .
  • the pump 10 also includes a connection 36 to the discharge duct 34, in order to be able, if necessary, to drain cleaning or rinsing water after its use in the entire circuit.
  • An air compressor 40 supplies an air injection valve 42 located on each control system 14, 16, between the non-return valve 22 and the second three-way connection 32, in order to inject air under pressure in the cleaning water, upstream side following the direction of circulation in the heating circuit 2, in order to accompany this water through this circuit.
  • the blocking valve 24 of the first control system 14 is closed, and that of the second control system 16 is opened.
  • Operation of the pump 10 supplying the first conduit 12 circulates the fluid successively in the non-return valve 22 of the first control system 14, then in the heating circuit 2, and then in the blocking valve 24 of the second control system. control 16.
  • the non-return valve 22 of the second control system 16 is then operational, that is to say closed for this direction of circulation.
  • the fluid then returns through the second conduit 18 to the pump 10, passing through the sludge trap 38.
  • compressed air is injected by the compressor 40 at the inlet of the heating circuit 2, by opening the air injection valve 42 of the first control system 14, possibly jerkily , in order to cause mechanical shocks which help the detachment and circulation of the sludge.
  • the direction of circulation is reversed.
  • the blocking valve 24 of the second control system 16 is closed, the valve of the first control system 14 is opened, and the pump 10 is controlled to deliver the flow of water in the opposite direction to the previous one. that is to say on the second conduit 18.
  • Air is injected by opening the air injection valve 42 of the second control system 16.
  • the closed sludge removal circuit makes it possible to recycle the cleaning water for a certain number of circulations, and thus to limit its consumption.
  • the pressure gauges 26 make it possible to constantly monitor the rise in pressure in the heating circuit 2, to reduce or stop if necessary the pressure delivered by the pump 10.
  • the successive alternating circulations in the heating circuit 2 can take off suddenly large quantities of material which could quickly obstruct ducts or radiator outlets by causing the pressure to rise. This ensures safety.
  • manometers 26 can comprise an electrical threshold detection sending a signal, for example audible or visual, to indicate an overpressure.
  • the two pressure gauges 26 make it possible to monitor the maximum pressure on both sides of the heating circuit 2 during the sludge removal operations in order to avoid any accident.
  • an automatic stoppage of the pressure rise can be performed in the case of a manometer with electrical threshold detection.
  • Circuits comprising plastic pipes of the cross-linked high-density polyethylene “PER” type, which have a lower resistance to pressure, are thus protected in particular.
  • the pressure difference between the inlet and the outlet of the heating circuit 2, indicated by the difference between the two pressure gauges 26, can constitute a means of measuring the resistance to the circulation of the flow in this circuit, and therefore an indicator of the level of sludge in the circuit.
  • the manometer 26 arranged on the side of the outlet of the heating circuit 2 makes it possible in particular to detect a leak or a tear in this heating circuit, by measuring a sudden and significant drop in pressure.
  • each control system 14, 16 makes it possible to automatically avoid during a rise in pressure in the circuit, in particular during the injection of air, a rise of fluids towards the inlet pipe of water coming from the pump 10. It is thus possible to reverse the direction of circulation coming from the pump 10, with the valve of the other control system 14, 16 which then operates automatically without manual intervention, to protect the other inlet from 'water.
  • figure 2 presents as a variant a similar sludge removal installation, which differs from the installation of the figure 1 in that it does not include an external air compressor, nor an air injection valve 42 on each control system 14, 16.
  • the pump 10 in this case comprises an integrated air compressor 50, which injects air continuously or in jerks into the conduit 12, 18 constituting the departure of the cleaning water. In this way, the pump 10 automatically manages the air injection side following the departure of the cleaning water, through the pipe 12, 18, without having to intervene on this air circuit.
  • FIG. 3 presents a second variant of the sludge removal installation presented at the figure 1 , comprising an external water supply 62 directly connected to the first conduit 12, the second conduit 18 being connected to a sewer 64 via the sludge trap 38.
  • Water is circulated from the external supply 62, using the pressure of this supply network for propulsion.
  • the water after serving a only once in the heating circuit 2, is discharged into the sewer 64 after recovery of the sludge.
  • the inversion of the direction of circulation of the cleaning water in the heating circuit 2 is done in this case after a manual inversion of the connections on the external water supply 62 and on the sewer 64.
  • the air compressor 40 can be replaced by a commercial device, traditional, combining a pump to propel the water and an air compressor.
  • FIG 4 presents a third variant of the sludge removal installation presented at the figure 1 , comprising an inversion block 60 connected to the pressurized water outlet 72 and to the return of this pressurized water 74 from the pump 10.
  • Each conduit 12, 18 is connected both to the outlet 72 and to the return 74, each time by a flow reversal valve 70.
  • Each flow reversal valve 70 can be manually controlled or automated.
  • the pump 10 is also connected to an inlet coming from an external water supply 62, and to an outlet 36 going to the low pressure evacuation conduit 34 connected to a sewer 64.
  • the sludge trap 38 is installed on the exit before the sewer 64. Alternatively the sludge pot 38 can be installed on one of the two conduits 12 or 18.
  • the reversal block 60 makes it possible to alternate the connections of the outlet of the pump 72 and its return 74, by opening two opposite flow reversal valves 70 and by closing the other two, and alternately by reversing this operation, which is done quickly by a simple manual or automatic control, without disconnecting the connection.
  • the inversion block 60 can be integrated into the pump 10. Furthermore, if the pressure of the external supply circuit 62 is sufficient, a pressure pump 10 can be dispensed with.
  • the air compressor 40 supplies each air injection valve 42 via a motorized air injection valve 76, making it possible to automatically perform a jerky flow of air according to a predefined program.
  • the pressure gauges 26 ensure safety in a simple and effective manner.
  • the The method according to the invention could be used for cleaning devices having two ends which allow between them the circulation of the cleaning fluid in one direction, in the other direction, or in the two respectively alternate directions of the device to be cleaned.
  • Vehicle exhaust pipes could constitute universal cleaning solutions using the method according to the invention.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Treatment Of Sludge (AREA)
  • Cleaning In General (AREA)

Claims (12)

  1. Anlage zur Entschlammung, vorgesehen für die Verbindung mit beiden Enden (6, 8) eines Heißwasser-Heizkreislaufs (2), mit einer Steuereinrichtung der Zirkulation eines Reinigungsfluids zwischen diesen beiden Enden (6, 8), was eine Umkehrung der Zirkulationsrichtung in den beiden Rohren (12, 18) des Heizkreislaufs (2) ermöglicht, mit einem Lufteinblassystem (40, 50) in das Reinigungswasser, und mit zwei Steuersystemen (14, 16) von denen jedes an einem entsprechenden Ende (6, 8) des Heizkreislaufs (2) angeordnet ist, dadurch gekennzeichnet, dass jedes Steuersystem (14, 16) einen Schließhahn (20), sodann einen Drei-Wege-Anschluss (30), von dem einer der Wege das Rohr (12, 18) verlängert, und einen zweiten Drei-Wege-Anschluss (32) aufweist, von dem einer der Wege ein Ende (6, 8) des Heizkreislaufs (2) speist, wobei die anderen beiden Wege parallel die beiden Anschlüsse (30, 32) verbinden, wobei einer ein Rückschlagventil (22) aufweist, das ausschließlich den Fluss, der vom Schließhahn (20) kommt, hindurch fließen lässt, und die andere Richtung blockiert, und der andere einen Sperrhahn (24) aufweist, dass der Weg des zweiten Anschlusses (32) eines jeden Steuersystems (14, 16), der ein Ende (6, 8) des Heizkreislaufs speist, darüber hinaus mit einem Druckmesser (26) und einem Sicherheitsventil (28) versehen ist, und dass die Einrichtungen (42, 50), die ermöglichen, Luft in das Reinigungswasser einzublasen, an einem Punkt stromauf des Druckmessers (26) angeordnet sind, gemäß der Zirkulationsrichtung in dem Heizkreislauf (2) und Luft auf kontinuierliche Weise oder stoßweise einblasen.
  2. Entschlammungsanlage nach Anspruch 1, dadurch gekennzeichnet, dass ein jedes Steuersystem (14, 16) einen Lufteinblashahn (42) aufweist zum Einblasen von Luft in das Reinigungswasser, wobei der Einblashahn (42) zwischen dem Rückschlagventil (22) und dem zweiten Drei-Wege-Anschluss (32) angeordnet ist.
  3. Entschlammungsanlage nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sie einen Luftkompressor (40, 50) aufweist, der Luft abwechselnd in das eine oder das andere der beiden Rohre (12, 18) des Heizkreislaufs (2) einblasen kann.
  4. Entschlammungsanlage nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Steuereinrichtung der Zirkulation des Reinigungsfluids zwischen den Enden (6, 8) der Anlage eine Vortriebspumpe (10) ist, die in der Lage ist, die Zirkulationsrichtung des Reinigungswassers umzukehren.
  5. Entschlammungsanlage nach Anspruch 4, dadurch gekennzeichnet, dass die Pumpe (10) den Luftkompressor (50) umfasst, wobei der Kompressor Luft auf kontinuierliche Weise oder stoßweise in das Rohr (12, 18) einbläst.
  6. Entschlammungsanlage nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Druckmesser (26) eine Einrichtung zum automatischen Erfassen einer Druckschwelle aufweisen.
  7. Entschlammungsanlage nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass sie einen Inversionsblock (60) aufweist, der einerseits mit den zwei Steuerungssystemen (14, 16) und andererseits mit einem Ausgang (72) verbunden ist, der dem Heizkreislauf (2) Druckwasser liefert, und eine Rückführung (74) aufweist, die das Wasser des Heizkreislaufs (2) aufnimmt, die Einrichtungen aufweist, die ermöglichen, den Anschluss des Austritts (72) und der Rückführung (74) umzudrehen.
  8. Entschlammungsanlage nach Anspruch 7, dadurch gekennzeichnet, dass der Inversionsblock (60) vier Mengenumschaltventile (70) aufweist, die jeweils zwischen einerseits einem Rohr (12, 18) und andererseits dem Ausgang (72) oder der Rückführung (74) angeordnet sind.
  9. Entschlammungsanlage nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass sie eine Pumpe (10) aufweist die das Reinigungswasser unter Druck zu dem Ausgang (72) liefert und dieses Wasser durch die Rückführung (74) aufnimmt.
  10. Verfahren zum Betrieb einer Entschlammungsanlage nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass es darin besteht, den Druck, der von einem jeden der beiden Druckmesser angegeben wird, und folglich die Differenz zwischen den so angegebenen Drücken zwischen dem Eingang und dem Ausgang des Heizkreislaufs zu überwachen, wobei die Druckdifferenz ein Mittel zum Messen des Widerstands bei der Zirkulation des Stromes in dem Kreislauf und somit einen Indikator bezüglich des Niveaus der Verschlammung bildet.
  11. Betriebsverfahren nach Anspruch 10, dadurch gekennzeichnet, dass es die Zirkulationsrichtung des Reinigungswassers in dem Heizkreislauf (2) abwechselt.
  12. Betriebsverfahren nach Anspruch 11, dadurch gekennzeichnet, dass für jede Umkehr der Zirkulationsrichtung des Reinigungswassers es ein Lufteinblasen auf getaktete Weise durchführt.
EP18290010.0A 2017-02-01 2018-02-01 Anlage zur entschlammung für einen heisswasser-heizkreis Active EP3473949B1 (de)

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FR1700102A FR3062466B1 (fr) 2017-02-01 2017-02-01 Installation de desembouage pour un circuit de chauffage par eau chaude

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EP3473949A1 EP3473949A1 (de) 2019-04-24
EP3473949B1 true EP3473949B1 (de) 2023-08-30
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GB2576943B (en) * 2018-09-07 2021-01-13 Adey Holdings 2008 Ltd Flushing machine
EP3782742A1 (de) * 2019-08-23 2021-02-24 wattec GmbH Reinigungsvorrichtung und reinigungsverfahren

Citations (1)

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DE3902366C2 (de) * 1989-01-27 1999-05-12 Jens Pannenborg Verfahren zum Betreiben von Verbraucherrohrsystemen oder Kreislaufsystemen sowie Vorrichtung zur Durchführung dieses Verfahrens

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WO1988003065A1 (en) * 1986-10-23 1988-05-05 Sundholm Goeran An apparatus for flushing small-diameter hydraulic pipe systems and the like
US4919154A (en) * 1988-02-29 1990-04-24 Engle Thomas B Pipe purging assembly and method therefor
FR2752614B1 (fr) * 1996-08-26 1998-10-09 Gendre Francis Dispositif destine au nettoyage des installations et equipements de production et de transport de chaleur ou de froid utilisant un fluide caloporteur liquide
FR2800647B1 (fr) * 1999-11-10 2002-01-18 Progalva Net Et 9 Machine de nettoyage de canalisations
US8628628B1 (en) * 2009-08-03 2014-01-14 Michael R. Bonner Auto-clean heat exchanger deep cleaning station
RU112360U1 (ru) * 2011-08-12 2012-01-10 Сергей Борисович Епископосян Универсальный конденсационный блок-модуль для отопления и горячего водоснабжения

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
DE3902366C2 (de) * 1989-01-27 1999-05-12 Jens Pannenborg Verfahren zum Betreiben von Verbraucherrohrsystemen oder Kreislaufsystemen sowie Vorrichtung zur Durchführung dieses Verfahrens

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FR3062466A1 (fr) 2018-08-03
RU2763237C2 (ru) 2021-12-28
EP3473949A1 (de) 2019-04-24
RU2018102563A3 (de) 2021-06-28
RU2018102563A (ru) 2019-07-23
FR3062466B1 (fr) 2020-06-26
EP3473949C0 (de) 2023-08-30

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