• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a turbocharger cleaning device for automatically cleaning an interior of a turbocharger (1) during operation of the turbocharger (1) and an associated cleaning method, wherein the turbocharger cleaning device comprises a controller (30) which is connected to the turbocharger (1) to turbocharger parameters and is configured to automatically clean the turbocharger by controlling at least one valve based on turbocharger parameters obtained from the turbocharger (1) and to automatically control the volume flow of a fluid through the piping system (10).
    公开号:CH714984A2
    申请号:CH4412019
    申请日:2019-04-02
    公开日:2019-11-15
    发明作者:Schatzinger Andreas；Beer Dietmar
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    Description: The invention relates to an automatic turbocharger cleaning device for cleaning a turbocharger in operation, an associated method for cleaning the turbocharger and a system comprising a turbocharger and turbocharger cleaning device.
    When operating a turbocharger, contamination of an interior of the turbocharger occurs both on a turbine side and on a compressor side of the turbocharger. In order to guarantee efficient and economical operation of the turbocharger, it is necessary that the dirt is removed regularly by cleaning.
    In particular for turbochargers of a certain size, for example for ship engines, but generally also for turbochargers that are in permanent operation, it is usually not possible to switch the turbocharger off for cleaning or to disassemble it.
    Various cleaning devices and cleaning methods are already known from the prior art, but these must be carried out manually. To carry out the cleaning, the cleaning personnel must approach the turbocharger from a safe distance, from a safety area and enter the danger area near the turbocharger. In the event of a malfunction of the turbocharger, situations can arise in the danger area in which the cleaning personnel are at risk. In addition, such manual cleaning is expensive.
    The invention is therefore based on the object to overcome the aforementioned disadvantages and to provide a turbocharger cleaning device for automatically cleaning an interior of a turbocharger in operation and an associated method with which the interior of the turbocharger is automatically cleaned, in particular without having to enter the danger zone can be.
    This object is achieved by the combination of features according to patent claims 1, 10 and 11.
    According to the invention, a turbocharger cleaning device for automatically cleaning an interior of a turbocharger during operation is proposed. The turbocharger cleaning device includes a piping system, a detergent source and an electronic control. The pipeline system connects a connecting piece of the turbocharger, which leads into the interior of the turbocharger to be cleaned, to the cleaning agent source, so that a fluid or cleaning agent or cleaning agent can flow from the cleaning agent source through the piping system to the connecting piece and into the interior. The piping system is also designed to guide a cleaning agent from the cleaning agent source through the connecting piece into the interior. The pipe system also comprises at least one valve for controlling a volume flow of a fluid or at least one cleaning agent from the cleaning agent source through the pipe system. The controller is connected to the turbocharger in order to receive turbocharger parameters, so that the controller can at least receive data from the turbocharger or a controller of the turbocharger or a measuring device on the turbocharger. The controller is designed to automatically clean the turbocharger or the interior, preferably by electrically actuating the at least one valve, based on turbocharger parameters obtained from the turbocharger, and in addition to automatically control the volume flow of a fluid through the piping system.
    Alternatively, the turbocharger cleaning device comprises the connecting piece, the turbocharger then having an opening receiving the connecting piece to the interior to be cleaned.
    In an advantageous embodiment of the turbocharger cleaning device, the pipeline system has a temperature measuring device. The temperature measuring device is designed to measure a temperature in the pipeline system at the connecting piece. As an alternative, the temperature can also be measured in a section of the pipeline system which is directly adjacent to the connecting piece but at a distance from it. If the temperature measured by the temperature measuring device exceeds a predetermined temperature threshold value of preferably 70 ° C., it is assumed that exhaust gases from the turbocharger have entered the piping system. The penetrated exhaust gases lead to corrosion of the piping of the piping system, so that they are subject to increased wear. The temperature measuring device is connected to the control. If the temperature measured by the temperature measuring device exceeds the temperature threshold value, the control unit initiates countermeasures in order to convey the exhaust gases from the pipeline system back into the turbocharger.
    A further advantageous embodiment variant provides that the turbocharger cleaning device comprises a sealing air source and the piping system a sealing air valve. The pipe system connects the sealing air source to the connection piece via the sealing air valve, so that a fluid or the sealing air can flow through the pipe system from the sealing air source to the sealing air valve, from the sealing air valve to the connection piece and into the interior to be cleaned. The sealing air valve is arranged in the piping system between the sealing air source and the connecting piece and is designed to control a volume flow of sealing air from the sealing air source through the connecting piece into the interior. The controller is connected to and controls the air purge valve so that the air purge valve is in an open position when the turbocharger is not being cleaned or is not undergoing a cleaning cycle, and the air purge valve is in a blocking position when the turbocharger is being cleaned or is undergoing a cleaning cycle. If the sealing air valve is in its open position, the sealing air flows in from the sealing air source
    CH 714 984 A2 the connecting piece. The sealing air preferably has a temperature of approximately 40 ° C. and a pressure that corresponds to at least one pressure of the exhaust gases in the turbocharger. The pressure of the sealing air is lower than a pressure of compressed air, which is preferably between 6 and 60 bar. Due to the pressure of the sealing air, it is designed to push exhaust gases present in the piping system back into the turbocharger through the connecting piece. The sealing air thereby seals the turbocharger cleaning device against exhaust gas entering from the turbocharger.
    In order to prevent damage to the turbocharger cleaning device by exhaust gas entering from the turbocharger, an advantageous embodiment provides that the turbocharger cleaning device comprises an emergency sealing air source and the piping system comprises an emergency sealing air valve. The piping system connects the emergency sealing air source to the connection piece via the emergency sealing air valve, so that a fluid or the emergency sealing air through the pipe system from the emergency sealing air source to the emergency sealing air valve, from the emergency sealing air valve to the connecting piece and into the can flow to the interior to be cleaned. The emergency sealing air valve is arranged in the pipeline system between the emergency sealing air source and the connecting piece and is designed to control a volume flow of emergency sealing air from the emergency sealing air source through the connecting piece into the interior. The controller is connected to and controls the emergency air purge valve so that the emergency air purge valve is in a passage position if the turbocharger is not cleaned or does not go through a cleaning cycle and exhaust gas has penetrated the piping system and the emergency air purge valve is in a blocking position, when the turbocharger is cleaned or undergoes a cleaning cycle. The temperature measuring device preferably determines that exhaust gas has entered the pipeline system, since in this case it measures a temperature above the temperature threshold. If the emergency sealing air valve is in its open position, the emergency sealing air flows from the emergency sealing air source to the connecting piece. The emergency sealing air is preferably compressed air with a static pressure between 6 and 60 bar. Due to the pressure of the emergency sealing air, it is designed to push exhaust gases present in the piping system back into the turbocharger through the connecting piece. The emergency sealing air thereby seals the turbocharger cleaning device against exhaust gas entering from the turbocharger. The emergency sealing air valve is controlled by the control system so that if the sealing of the piping system by the sealing air fails, the sealing air valve is brought into the blocking position by the control system so that the emergency sealing air does not lead to the Sealing air source can flow.
    In order to control the cleaning agent, an advantageous development provides that the pipeline system comprises a cleaning agent valve. The cleaning agent valve is arranged in the pipeline system between the cleaning agent source and the connecting piece, so that the cleaning agent can flow from the cleaning agent source through the cleaning agent valve to the connecting piece into the interior. The cleaning agent valve is designed to control a volume flow of the cleaning agent from the cleaning agent source through the connecting piece into the interior.
    In an advantageous embodiment, the turbocharger cleaning device comprises a control air source and the piping system a control valve. The pipe system connects the control air source to the cleaning agent valve via the control valve, so that a fluid or the control air can flow through the pipe system from the control air source to the control valve and from the control valve to the cleaning agent valve. The cleaning agent valve is designed as a pinch valve and the control valve is arranged in the piping system between the control air source and the cleaning agent valve. The control valve is designed to control a volume flow of control air from the control air source through a control connection of the pinch valve into a control chamber of the pinch valve. The control valve is connected to the controller that controls the control valve. If the control valve is in a passage position, the control air flows into the control chamber of the cleaning agent valve, builds up pressure in the control room and thereby narrows the passage cross section of the cleaning agent valve, so that less or no cleaning agent can pass through. If the control valve is in its blocking position, no control air flows into the control room but escapes from the control room, so that the pressure in the control room drops and the passage cross section of the cleaning agent valve increases. This allows the detergent valve to pass (more) detergent.
    In a further advantageous embodiment of the turbocharger cleaning device, the control air source and the emergency sealing air source are a common compressed air source from which compressed air flows as control air and emergency sealing air into the piping system.
    In particular, in the event that a granulate is used as the cleaning agent, an advantageous embodiment of the turbocharger cleaning device provides that the cleaning agent source comprises a cleaning agent container. An atmospheric pressure prevails in the detergent container, which corresponds to the average ambient pressure in a room in which the turbocharger is arranged. The detergent container also has a volume that corresponds to a multiple of a volume of the detergent that is consumed in a cleaning cycle as intended when the interior is cleaned. Due to the volume of the detergent container, it is not necessary to replace or refill the detergent container after each cleaning cycle, so that no manual work has to be carried out on the turbocharger cleaning device over a longer period of time.
    If the cleaning agent is a granulate and the cleaning to be carried out with it is dry cleaning, a conveying means is required with which the granulate can flow through the piping system into the interior. An advantageous development therefore provides that the turbocharger cleaning device comprises a source of conveyance and the piping system comprises a conveyance valve and a Venturi nozzle. The pipe system connects the source of funding via the Venturi nozzle and the cleaning agent valve to the connecting piece, so that the funding, if there is
    CH 714 984 A2 the conveyor valve is in its open position, flows through the conveyor valve into the Venturi nozzle, in which it carries the cleaning agent with it. The mixture of conveying agent and cleaning agent then flows out of the Venturi nozzle through the cleaning agent valve through the connecting piece into the interior. The conveyor valve is arranged in the pipeline system between the conveyor source and the Venturi nozzle and is designed to control a volume flow of a conveyor from the conveyor source through the Venturi nozzle, the cleaning agent valve and the connecting piece into the interior. The Venturi nozzle is designed to generate a vacuum with the flowing through conveying means, which transports the cleaning agent from the cleaning agent container into the conveying agent, so that the cleaning agent, mixed with the conveying agent or as a mixture of conveying agent and cleaning agent, can be conveyed into the interior of the turbocharger , The conveying means is preferably compressed air, the conveying means source, the control air source and the emergency sealing air source also preferably being a common compressed air source.
    According to the invention, a system comprising a turbocharger and a turbocharger cleaning device is also proposed. The interior of the turbocharger to be cleaned is a turbine side of the turbocharger or a compressor side of the turbocharger.
    According to the invention, a cleaning method for cleaning a turbocharger with a turbocharger cleaning device is also proposed during operation of the turbocharger. The only turbocharger parameter that the control of the turbocharger cleaning device receives from the turbocharger or the engine is exclusively a turbocharger speed. The controller compares the turbocharger speed with a target speed at predetermined intervals. When the desired speed is reached by the turbocharger speed, the control controls the at least one valve of the pipeline, so that cleaning agent is conducted through the pipeline system into the interior of the turbocharger. The cleaning agent is passed into the interior for a predetermined time, after which the control brings the valve from its open position into its blocking position. During this time, a predetermined volume of the cleaning agent is thereby fed into the interior during the cleaning process. A cycle of a cleaning process corresponds to a cleaning cycle. The cleaning process is preferably carried out automatically at predetermined intervals e.g. Repeated days or weeks. Alternatively or additionally, the command for cleaning can come from an external signal source.
    The cleaning process for cleaning the turbocharger is a dry cleaning process or a wet cleaning process. In the dry cleaning process, the cleaning agent is a granulate, preferably a nutshell granulate or an activated carbon granulate with an average diameter of 1.5 mm. In the wet cleaning process, the cleaning agent is a liquid, preferably fresh water, which can optionally be mixed with additives for cleaning. If the cleaning agent is a liquid, the cleaning agent source is preferably a tank or a pipe network, such as water pipes, which provides the liquid to the turbocharger cleaning device.
    In the cleaning method, the target speed in an advantageous embodiment is a full load speed of the turbocharger, at which the turbocharger is operated at its maximum continuous load. Alternatively, the target speed is between 20 and 40% of the full load speed of the turbocharger. In the case of dry cleaning or the dry cleaning method in particular, the target speed is the full load speed. In the case of wet cleaning or the wet cleaning method, the target speed can be the full load speed, but is preferably between 20 and 40% of the full load speed, so that the turbocharger is exposed to a lower thermal load and there are smaller temperature differences when the liquid is introduced into the interior the fluid and the turbocharger, so that exposure to thermal shock is minimized.
    An advantage of this is also an embodiment of the cleaning method, in which the control only actuates the valve after a waiting time after reaching the target speed. The waiting time serves to thermally adapt the turbocharger so that it can cool down within the waiting time. This results in lower loads on the turbocharger as a result of temperature differences or as a result of a thermal shock, that is to say a sudden temperature change, in particular when the liquid is introduced in the wet cleaning process.
    Also proposed is an advantageous development of the cleaning method, in which the controller controls the sealing air valve, so that it is in a passage position when no cleaning agent is passed through the pipe system from the cleaning agent source through the connecting piece into the interior, so that sealing air from the sealing air source is led into the interior. Furthermore, the sealing air valve is controlled by the controller in such a way that it is in a blocking position when cleaning agent is conducted into the interior, so that the cleaning agent cannot flow to the sealing air source. The emergency sealing air valve, if present, is also controlled in such a way that it is in a blocking position during a cleaning process, so that the cleaning agent does not flow to the emergency sealing air source.
    To protect the piping system, a further development of the cleaning method is advantageous, in which the control activates the emergency sealing air valve, so that it is in an open position when the temperature measuring device in the piping system measures an actual temperature that is above a target temperature , so that emergency sealing air is conducted from the emergency sealing air source into the interior. Exhaust gas in the pipeline, which causes the actual temperature to rise above the setpoint temperature, is conveyed or pressed by the emergency sealing air out of the piping system into the turbocharger.
    CH 714 984 A2 Preferably, the turbine side of the turbocharger can be cleaned using the dry cleaning method or the wet cleaning method and the compressor side of the turbocharger using the wet cleaning method.
    The turbocharger cleaning device can also be integrated or attached to existing turbochargers, so that it can be retrofitted.
    In the wet cleaning method, the liquid can also be mixed with cleaning additives in the pipeline system by means of a mixing device.
    The features disclosed above can be combined as desired, insofar as this is technically possible and they do not contradict each other.
    Other advantageous developments of the invention are characterized in the dependent claims or are shown below together with the description of the preferred embodiment of the invention with reference to the figures. It shows:
    1 shows a turbocharger cleaning device for dry cleaning a turbocharger;
    Fig. 2 shows a turbocharger cleaning device for wet cleaning a turbocharger.
    The figures are exemplary schematic. The same reference symbols in the figures indicate the same functional and / or structural features.
    1 shows a turbocharger cleaning device for dry cleaning a turbocharger 1 or the turbine side of the turbocharger 1. For this purpose, the turbocharger cleaning device comprises a pipeline system 10, a sealing air source Q1, a compressed air source Q2 and a detergent container Q3 '. A shut-off valve 13 is provided in the pipeline system 10 after the sealing air source Q1 and the compressed air source Q2 and before the connecting piece of the turbocharger 1, in order to be able to switch the pipeline system 10 or at least parts thereof free of pressure for maintenance purposes. The controller 30 is connected to the turbocharger 1 and receives from it the actual speed of the turbocharger 1 or the turbocharger turbine. In addition, the controller 30 is connected to the valves V1 to V4 or the control coils of the valves V1 to V4 in order to be able to move the valves V1 to V4 into a blocking position or a passage position by actuation. The connection of the valves V1 to V4 and the turbocharger 1 with the controller 30 is shown in the figures by dashed lines. The controller 30 is also connected to the temperature measuring device 11 and the pressure switches 14, which is not shown. The pressure switches 14 transmit to the controller 30 the current pressure or at least the falling below or exceeding a predetermined pressure in the respective section of the pipeline system 10 in which they are arranged.
    If the turbocharger 1 is not cleaned, the controller 30 switches the sealing air valve V1 into its open position so that sealing air is conducted from the sealing air source Q1 into the turbocharger and the exhaust gases of the turbocharger are not able to penetrate into the piping system 10. If exhaust gases nevertheless penetrate into the pipeline system 10, for example because the sealing air source Q1 does not supply sealing air or does not supply enough sealing air, the elevated temperature is measured by the temperature measuring device 11, which determines the actual temperature at regular intervals and transmits it to the control. If the temperature measuring device 11 reports to the controller 30 an actual temperature that is higher than a target temperature, the controller 30 switches the sealing air valve V1 into its blocking position and the emergency sealing air valve V2 into its open position. Compressed air can flow with the emergency sealing air valve V2 in the open position from the compressed air source Q2 via the connection piece (not shown) into the turbocharger 1 and thus presses exhaust gas that has penetrated into the piping system 10 back into the turbocharger 1. The control valve V3 controls the pinch valve V5. If the turbocharger 1 is not cleaned, the control valve V3 is in the open position, so that compressed air can flow into a control chamber of the pinch valve V5 and thus cut off the flow from the Venturi nozzle 12 to the turbocharger 1. To clean the turbocharger 1, the control switches the sealing air valve V1, the emergency sealing air valve V2 and the control valve V3 into the respective blocking position and the conveying valve V4 into the open position for a predetermined time. The compressed air flows from the compressed air source Q2 through the conveying valve into the Venturi nozzle 12. In the Venturi nozzle 12, the compressed air flowing past tears granules out of the cleaning agent container Q3 ', so that the granules mix with the compressed air. The compressed air with the granulate flows out of the Venturi nozzle through the pinch valve V5 and through the connection piece into the interior of the turbocharger 1 on the turbine side. The granulate acts as a cleaning agent in the interior for cleaning the turbocharger. The controller 30 initiates the cleaning process in the exemplary embodiment shown at regular intervals of 7 days as soon as the turbocharger speed transmitted to the controller corresponds to a target speed stored in the controller 30, which is the full-load speed.
    2 also shows a turbocharger cleaning device for cleaning a turbocharger 1 or the turbine side of the turbocharger 1. However, the turbocharger cleaning device is designed for wet cleaning of the turbocharger 1. The components each have the same function, but in the embodiment shown in FIG. 2 the delivery valve V4 and the Venturi nozzle are omitted, since the liquid does not require any additional delivery. The liquid is provided by a liquid source Q3, so that during a cleaning process the liquid flows into the turbocharger 1 through the pressure provided by the liquid source Q3.
    CH 714 984 A2 The embodiment of the invention is not limited to the preferred exemplary embodiments specified above. Rather, a number of variants are conceivable which make use of the solution shown, even in the case of fundamentally different types. For example, the turbocharger cleaning device can provide a switch unit by means of which two cleaning agent containers can be connected to the connecting piece via the pipeline system, so that both a dry and a wet cleaning process can be carried out by the turbocharger cleaning device.
    LIST OF REFERENCE NUMBERS
    [0033] 1 turbocharger 10 Piping 11 Temperature measuring device 12 venturi 13 shut-off valve 14 pressure switch 30 control V1 Sealing air valve V2 Emergency sealing air valve V3 control valve V4 funding valve V5 pinch Q1 Sealing air source Q2 Compressed air source Q3 ' Detergent tank Q3 liquid source
    权利要求:
    Claims (16)
    [1]
    claims
    1. turbocharger cleaning device for the automatic cleaning of an interior of a turbocharger (1) in operation, comprising a piping system (10), a cleaning agent source and an electronic control (30), the piping system (10) having a connecting piece of the turbocharger (1) which is in the leads to the interior of the turbocharger (1) to be cleaned, connects to the source of cleaning agent and is designed to guide a cleaning agent from the source of cleaning agent into the interior through the connecting piece, the piping system (10) has at least one valve for controlling (30) a volume flow of at least one cleaning agent by the piping system (10), and the controller (30) is connected to the turbocharger (1) in order to receive turbocharger parameters and is designed to control the turbocharger by actuating the at least one valve based on turbocharger parameters obtained from the turbocharger (1) , automatically clean and the volume flow of a fluid to be controlled automatically by the piping system (10).
    [2]
    2. Turbocharger cleaning device according to claim 1, wherein the pipeline system (10) has a temperature measuring device (11) which is designed to measure a temperature in the pipeline system (10) at the connecting piece.
    [3]
    3. Turbocharger cleaning device according to one of the preceding claims, wherein the turbocharger cleaning device comprises a sealing air source (Q1) and the pipe system (10) comprises a sealing air valve (V1) and the pipe system (10) connects the sealing air source (Q1) to the connecting piece, the sealing air valve (VI ) is arranged in the piping system (10) between the sealing air source (Q1) and the connecting piece and is designed to control a volume flow of sealing air from the sealing air source (Q1) through the connecting piece into the interior.
    [4]
    4. Turbocharger cleaning device according to one of the preceding claims, wherein
    CH 714 984 A2 the turbocharger cleaning device comprises an emergency sealing air source and the piping system (10) comprises an emergency sealing air valve (V2) and the piping system (10) connects the emergency sealing air source to the connecting piece, the emergency sealing air valve (V2) in the piping system (10) is arranged between the emergency sealing air source and the connecting piece and is designed to control a volume flow of emergency sealing air from the emergency sealing air source through the connecting piece into the interior.
    [5]
    Turbocharger cleaning device according to one of the preceding claims, wherein the pipeline system (10) comprises a detergent valve, the detergent valve is arranged in the pipeline system (10) between the detergent source and the connecting piece and is designed to flow a volume of the detergent from the detergent source through the connecting piece into the Control interior.
    [6]
    6. Turbocharger cleaning device according to the preceding claim, wherein the turbocharger cleaning device comprises a control air source and the pipe system (10) comprises a control valve (V3) and the pipe system (10) connects the control air source to the detergent valve, the detergent valve being designed as a pinch valve (V5) and the control valve (V3) is arranged in the pipeline system (10) between the control air source and the cleaning agent valve and is designed to control a volume flow of control air from the control air source through a control connection of the pinch valve (V5) into a control chamber of the pinch valve (V5).
    [7]
    7. Turbocharger cleaning device according to claims 4 to 6, characterized in that the control air source and the emergency sealing air source are a common compressed air source (Q2).
    [8]
    Turbocharger cleaning device according to one of the preceding claims, wherein the detergent source comprises a detergent container (Q3 '), in which there is an atmospheric pressure and which has a volume which corresponds to a multiple of a volume of the detergent, which is used during an intended cleaning cycle when cleaning the interior is consumed.
    [9]
    9. turbocharger cleaning device according to at least the preceding claims 5 and 8, wherein the turbocharger cleaning device comprises a funding source and the piping system (10) comprises a funding valve (V4) and a Venturi nozzle (12) and the piping system (10) the funding source via the Venturi nozzle (12) and connects the detergent valve to the connecting piece, the conveying valve (V4) being arranged in the piping system (10) between the conveying source and the Venturi nozzle (12) and being designed, a volume flow of a conveying medium from the conveying source through the Venturi nozzle (12), the detergent valve and to control the connecting piece into the interior, the Venturi nozzle (12) being designed to generate a vacuum with the flowing through conveying means, which transports the detergent from the detergent container (Q3 ') into the conveying means, so that the detergent mixes t the funding, can be conveyed into the interior of the turbocharger (1).
    [10]
    10. System comprising a turbocharger (1) and a turbocharger cleaning device according to at least one of the preceding claims, wherein the interior to be cleaned is a turbine side of the turbocharger (1) or a compressor side of the turbocharger (1).
    [11]
    11. Cleaning method for cleaning a turbocharger (1) with a turbocharger cleaning device according to at least one of the preceding claims 1 to 9, characterized in that the only turbocharger parameter is exclusively a turbocharger speed, the controller (30) compares the turbocharger speed with a target speed and the controller (30) when the target speed is reached by the turbocharger speed, the at least one valve of the pipeline is actuated, so that cleaning agent is conducted through the piping system (10) into the interior of the turbocharger (1), the cleaning agent conducted into the interior having a predetermined volume ,
    [12]
    12. Cleaning method according to the preceding claim, characterized in that the cleaning method is a dry cleaning method in which the cleaning agent is a granulate, or the cleaning method is a wet cleaning method in which the cleaning agent is a liquid.
    [13]
    13. Cleaning method according to one of the preceding claims 11 or 12, wherein the target speed is a full load speed of the turbocharger (1) or between 20 and 40% of the full load speed of the turbocharger (1).
    [14]
    14. Cleaning method according to one of the preceding claims 11 to 13, wherein the controller (30) controls the valve only after a waiting time after reaching the target speed.
    [15]
    15. Cleaning method according to at least one of the preceding claims 11 to 14 and at least claim 3, wherein the controller (30) controls the sealing air valve (V1), so that it is in a passage position when no cleaning agent through the pipe system (10) from the cleaning agent source the connection piece is led into the interior so that sealing air is led into the interior from the sealing air source (Q1).
    [16]
    Cleaning method according to at least one of the preceding claims 11 to 15 and at least claims 2 and 4, wherein the controller (30) controls the emergency sealing air valve (V2), so that it is in an open position when the temperature measuring device in the piping system (10) measures an actual temperature above a target temperature so that emergency sealing air is conducted from the emergency sealing air source into the interior.
    CH 714 984 A2

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    同族专利:
    公开号 | 公开日
    JP2019194473A|2019-11-07|
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    KR20190127552A|2019-11-13|
    CN110439685A|2019-11-12|
    US20190338667A1|2019-11-07|
    RU2019113063A|2020-11-02|
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    申请号 | 申请日 | 专利标题
    DE102018110567.3A|DE102018110567A1|2018-05-03|2018-05-03|Automatic turbocharger cleaning device|
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