Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
  • F15B19/005—Fault detection or monitoring
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
  • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
  • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
  • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
  • F04D15/0077—Safety measures
  • F04D15/0083—Protection against sudden pressure change, e.g. check valves
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
  • F04D15/0088—Testing machines
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
  • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
  • F04D15/029—Stopping of pumps, or operating valves, on occurrence of unwanted conditions for pumps operating in parallel
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
  • F15B19/007—Simulation or modelling
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
  • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
  • F17D5/00—Protection or supervision of installations
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2211/00—Circuits for servomotor systems
  • F15B2211/60—Circuit components or control therefor
  • F15B2211/63—Electronic controllers
  • F15B2211/6303—Electronic controllers using input signals
  • F15B2211/6306—Electronic controllers using input signals representing a pressure
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2211/00—Circuits for servomotor systems
  • F15B2211/60—Circuit components or control therefor
  • F15B2211/63—Electronic controllers
  • F15B2211/6303—Electronic controllers using input signals
  • F15B2211/6306—Electronic controllers using input signals representing a pressure
  • F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply pressure
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2211/00—Circuits for servomotor systems
  • F15B2211/60—Circuit components or control therefor
  • F15B2211/63—Electronic controllers
  • F15B2211/6303—Electronic controllers using input signals
  • F15B2211/632—Electronic controllers using input signals representing a flow rate
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2211/00—Circuits for servomotor systems
  • F15B2211/60—Circuit components or control therefor
  • F15B2211/63—Electronic controllers
  • F15B2211/6303—Electronic controllers using input signals
  • F15B2211/6333—Electronic controllers using input signals representing a state of the pressure source, e.g. swash plate angle
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2211/00—Circuits for servomotor systems
  • F15B2211/60—Circuit components or control therefor
  • F15B2211/63—Electronic controllers
  • F15B2211/6303—Electronic controllers using input signals
  • F15B2211/634—Electronic controllers using input signals representing a state of a valve
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2211/00—Circuits for servomotor systems
  • F15B2211/80—Other types of control related to particular problems or conditions
  • F15B2211/857—Monitoring of fluid pressure systems

Definitions

• the invention relates to a method for processing operating data of a flow arrangement, a computer program product and a flow system.
• assemblies are often used that include centrifugal pumps connected in parallel to generate the flow.
• these assemblies similar to those of the other parts of the plant - are only instrumented in such a way that the process goals set for the plants can be achieved.
• Further additional measurement technology for diagnosis or for assessing the operating modes of individual components or individual devices is only available in a few exceptional cases, in particular for reasons of cost. That has to As a result, the operating modes of the individual pumps are largely unknown. This applies in particular to pump assemblies in which pumps of different design and performance are installed, since known models usually require pumps of the same construction and speed.
• a method for processing operating data of a flow arrangement of a plant comprises a first production line, which has a first flow resistance, and a second production line, which has a second flow resistance. Furthermore, the second conveyor line is connected in parallel to the first conveyor line for a fluid flow in the flow arrangement, in particular hydraulically.
• the method includes, in particular in the form of method steps:
• a, preferably structure-free, substitute model for determining a strand-related operating behavior of the flow arrangement, in which a mutual influence of the first conveyor strand, preferably a first operating behavior of the first conveyor strand, and the second conveyor strand, preferably a second operating behavior of the second conveyor strand, depending on the resistance behavior and the joint operating behavior is taken into account, in particular by a model module of the control unit,
• the processing of the operating data can preferably include an analysis of the operation of the flow arrangement.
• the flow arrangement is in particular a hydraulic arrangement.
• the system can thus be a hydraulic system.
• the fluid flow can be a liquid flow, preferably an incompressible liquid such as water.
• the parallel connection of the first and second conveying line for the fluid flow is understood in particular to mean a hydraulic parallel connection.
• the first and second conveying line can each have at least one line section for guiding the fluid flow, in which the first flow resistance or the second flow resistance is arranged.
• the first and second conveying line can thus have a common flow inlet and/or a common flow outlet.
• a flow circuit can have a branching into the first and second conveying line at the flow inlet and a merging of the fluid flow at the flow outlet include the first and second conveyor line.
• the first and/or second flow resistance can be formed by a valve or another constriction. It is conceivable that each of the conveyor lines has a plurality of flow resistances that are hydraulically connected in series or in parallel with one another.
• the first and/or second reference behavior preferably includes in each case at least one reference parameter which characterizes an influence of the first and/or second flow resistance on the fluid flow in the respective conveying line. It is conceivable that the first and/or second reference behavior each includes a reference characteristic curve for characterizing an influence of the first and/or second flow resistance on the fluid flow in the respective conveying line.
• the common operating parameter can include a pressure and/or flow parameter, in particular in the form of a pressure and/or flow ratio, in the flow arrangement, which is influenced by the first conveyor line and the second conveyor line.
• the common operating parameter can be measured and/or specified for a simulation of the current operating situation.
• the resistance behavior and/or the joint operating behavior can be detected virtually and/or using real measured values.
• the resistance behavior and the joint operating behavior can thus be operating data, in particular predetermined and/or recognized operating data.
• the first reference behavior and/or the second reference behavior can each comprise at least one reference parameter, which is recorded in terms of data and/or measurement technology when the resistance behavior is recorded.
• the common operating parameter can be recorded using data technology and/or measurement technology.
• the resistance behavior can be provided by a memory module of the control unit, for example.
• the substitute model can advantageously be implemented as an analytical and/or structure-free computational model, in particular without structural modeling of lines and/or structures of the components.
• the lines and the structures of the components only by parameters and / or Constants are taken into account in the replacement model.
• the replacement model is time-independent and/or is designed to determine the line-related operating behavior in a state of equilibrium of the flow arrangement.
• a time-independent execution of the replacement model can be understood to mean that the current operating situation can be limited to a specific point in time and the replacement model therefore in particular does not include a function over a number of time steps.
• the substitute model is preferably based on the stream thread theory.
• the replacement model can include an analytical system of equations, for example.
• the system of equations and/or a structure of the system of equations can be predetermined.
• values of the resistance behavior and the common operating behavior can be used in the system of equations when determining the substitute model as a function of the resistance behavior and the common operating behavior.
• the system of equations is created when determining the replacement model, in particular as a function of the current operating situation and/or of an embodiment of the flow arrangement. It can be provided, for example, that the system of equations is compiled and/or parameterized, in particular based on the structure.
• the substitute model when determining the substitute model, provision can be made for a number of equations and/or terms of the equations for the substitute model to be determined as a function of the current operating situation and/or of a configuration of the flow arrangement.
• the first and second performance may still be unknown when determining the substitute model.
• the mutual influence of the first and second operating behavior can be expressed, for example, by an equation, a constant and/or an equation term.
• the line-related operating behavior can include, for example, the first operating behavior of the first conveyor line and the second operating behavior of the second conveyor line in the current operating situation.
• the first operating behavior can be calculated for the first conveyor line and the second operating behavior for the second conveyor line be, for example by operating parameters are calculated as a function of the substitute model, which characterize the first operating behavior and the second operating behavior.
• a current configuration of the flow arrangement can be analyzed with knowledge of the resistance behavior and the common operating behavior. For example, individual operating parameters of the flow resistances and/or other components of the conveyor lines can be identified and/or calculated.
• the operating data of the flow arrangement can also be processed if additional measuring technology for diagnosis or for assessing the operating modes of individual components or individual devices in the conveying lines is not provided.
• proof of the current configuration of the flow arrangement can be provided to clarify warranty issues without retrofitting the system.
• Advantageously z. B. be recognized whether the flow arrangement is operated according to design. Furthermore, it is conceivable that the processing of the operating data with the method for designing the flow arrangement is used.
• the first conveyor line has a first turbomachine and the second conveyor line has a second turbomachine, preferably with the first turbomachine being connected in series with the first flow resistance and/or the second turbomachine being connected in series with the second flow resistance.
• the first flow machine is connected in series in front of the first flow resistance in the direction of fluid flow and/or the second flow machine is connected in series in front of the second flow resistance in the direction of fluid flow.
• An exchange of mechanical energy and flow energy of the fluid flow in the conveying lines can take place through the flow machines.
• the flow through the first and second flow machine can be influenced differently in each of the conveyor lines.
• the operating modes of the individual turbomachines are unknown or largely unknown.
• the first and second turbomachine in the form of different machine models and / or with different maximum capabilities are designed.
• the two turbomachines are operated at different operating points.
• Such information about the turbomachines can be obtained through the train-related operating behavior and in particular the associated train-related approach, in particular without the need for additional sensors.
• at least one machine-related operating parameter is calculated when determining the train-related operating behavior.
• the first turbomachine and/or the second turbomachine is designed as a pump, preferably with the first turbomachine and the second turbomachine having different differential pressures in the form of delivery pressures for delivering the fluid flow in the current operating situation.
• the first and/or the second turbomachine can preferably be designed as a centrifugal pump.
• a delivery pressure can be understood to mean a pressure difference generated by the respective turbomachine in the respective delivery line. Due to the parallel connection, however, the pressure ratio in the delivery lines can deviate from the contribution of the respective turbomachine, in particular from the contribution of the turbomachine with a lower delivery capacity.
• the turbomachines can be operated with different delivery rates.
• the method thus makes it possible to determine the train-related operating behavior for pumps that provide an energy contribution to the flow.
• the line-related operating behavior is determined independently of which pumps the assembly consists of or at which speeds the pumps are operated.
• the respective differential pressure on the first turbomachine and/or on the second turbomachine can preferably only be calculated when the joint operating behavior is determined.
• the train-related operating behavior can thus include a train-related mode of operation.
• the first flow resistance and the second flow resistance are each in an open state for allowing a flow, in particular in the respective conveyor line, and a closed state for blocking a flow, in particular in the respective conveyor line, can be brought.
• the first flow resistance or one of the two flow resistances is preferably in the closed state in the current operating situation and the second flow resistance or the other of the two flow resistances is in the open state.
• the first and/or second flow resistance can each be formed by a valve. Taking into account the mutual influence of the first and second operating behavior of the two conveyor lines in the substitute model also enables the line-related operating behavior of the first and second conveyor line to be calculated when the first or second flow resistance is in the closed state. In the closed state, a fluid flow in the respective conveyor line can be completely prevented or limited to a leakage flow.
• the first reference behavior and/or the second reference behavior in particular in each case, includes a minimum reference parameter for characterizing the open state and/or a maximum reference parameter for characterizing the closed state.
• the first and/or second reference behavior can in particular include a characteristic curve of the respective flow resistance, in particular for defining the first and/or second reference behavior by a pressure loss figure compared to a pressure difference prevailing at the respective flow resistance.
• the characteristic curve can have a gradient that lies between the maximum and the minimum reference parameter.
• the maximum reference parameter includes a maximum pressure loss figure and/or the minimum reference parameter includes a minimum pressure loss figure, in particular as a function of the characteristic curve.
• the open state and/or the closed state can be characterized in the substitute model.
• the pressure conditions prevailing in the current operating situation at the flow resistances can be calculated when determining the line-related operating behavior, in particular instead of measuring them in the flow system.
• the first flow resistance and the second flow resistance are each formed by a check valve.
• One of the conveying lines can flow through the non-return valve be completely closed, especially if a pump with a lower capacity is arranged in the respective conveyor line.
• the check valves can be purely mechanical check valves that are switched to the open state in an intended flow direction from a predetermined differential pressure value, in particular an opening pressure inherent in the check valve.
• the check valve remains closed, for example by spring preload. The flow behavior in the closed state can be taken into account by a high pressure loss figure.
• the check valve can be opened.
• the transfer of the respective check valve from the open state to the closed state and vice versa can be taken into account as a continuous process in the substitute model, in particular in which the degree of opening depends on the differential pressure.
• the pressure drop figure remains constant and takes a value of the minimum reference parameter.
• a completely closed conveyor line can also be advantageously taken into account in the substitute model and when determining the line-related operating behavior.
• the flow arrangement has a flow inlet and a flow outlet, the common operating behavior comprising a pressure difference between the flow inlet and the flow outlet and/or a volume flow at the flow inlet and/or at the flow outlet.
• the pressure difference and/or the volume flow can form the common operating parameter. Only one common operating parameter is preferably provided, which is taken into account in the substitute model. For example, it can be sufficient if the volume flow and/or the pressure difference is known in order to calculate the line-related operating behavior.
• the mutual influence of the first conveyor line and the second conveyor line by a respective differential pressure direction at the first flow resistance and at the second Flow resistance is taken into account in the substitute model. Due to the differential pressure direction, a pressure loss and/or a pressure gain of the respective conveying line, in particular at the flow resistance, can be taken into account in the replacement model. It has been recognized within the scope of the present invention that an increase in a lower delivery pressure of one of the delivery lines to a higher delivery pressure of the respective other delivery line can be taken into account on the basis of the differential pressure direction in the substitute model. As a result, the strand-related operating behavior of the flow arrangement can be calculated even with different conveying pressures in the conveying strands.
• the substitute model comprises a system of equations in which a change in sign of a differential pressure in the first conveyor line and/or in the second conveyor line is taken into account.
• the change of sign can be taken into account in the substitute model in the form of a function, in particular a signum function.
• the signum function can be implemented, for example, as a function of the volume flow at the flow inlet and/or at the flow outlet. As a result, for example, a case distinction controlled by a user is not necessary.
• an equation for describing the first and/or second reference behavior, in particular in the substitute model can have a hyperbolic function, preferably in the form of a hyperbolic tangent.
• the operating parameters for each of the conveyor lines can be determined when determining the line-related operating behavior.
• the volume flow is therefore in particular a volume flow of the fluid flow in the respective conveyor line.
• the differential pressure includes in particular a pressure difference of the fluid flow between an inlet and outlet of the respective flow resistance and/or the respective turbomachine.
• the differential pressure at the respective turbomachine can in particular also be referred to as delivery pressure of the turbomachine.
• the line-related delivery head can include, for example, a zero delivery head of the pump arranged in the respective delivery line, in particular based on a ratio of a speed of the pump to a nominal speed of the pump.
• the pressure loss figure at the first and/or second flow resistance relates in particular to the current operating situation. All of the listed operating parameters can preferably be calculated using the substitute model when determining the strand-related operating behavior.
• the determination of the line-related operating behavior takes place iteratively, in particular as a function of a predefined initial condition.
• the substitute model can be non-linear.
• a Gauss-Seidel-Newton method can preferably be carried out for the substitute model in order to iteratively determine the strand-related operating behavior.
• the iterative procedure allows the replacement model to be broken down automatically in order to determine the line-related operating behavior, in particular numerically.
• the flow arrangement has at least a third delivery line with a third flow resistance, which is connected in parallel to the first delivery line and the second delivery line, with a third reference behavior of the third flow resistance being detected when the resistance behavior is detected.
• a third flow machine in particular in the form of a pump, is preferably connected in series with the third flow resistance in the third conveying line.
• the flow arrangement has further conveying strands with further flow resistances, and preferably connected in series thereto Flow machines, which are each connected in parallel to the first conveyor line and second conveyor line, with a further reference behavior of the further flow resistances being detected when detecting the resistance behavior.
• the substitute model can avoid having to make a manual case differentiation of the differential pressure direction for each of the conveying lines.
• the line-related operating behavior of an unknown configuration of the flow arrangement can be determined, in particular in an automated manner.
• the common operating parameter is measured in the system or is provided virtually.
• the common operating parameter can, for example, be a measured value or a default value, which z. B. is specified depending on a user input include.
• an existing flow arrangement of the system can be analyzed, for example.
• the flow arrangement can be simulated, for example, by the method.
• the common operating parameter is provided by a soft sensor system.
• the soft sensor system can be designed as a dependency simulation of representative measured variables for a target variable, and can therefore be independent of sensors that actually exist.
• a reaction process is carried out, in particular by a reaction module of the control unit, depending on the train-related operating behavior, in particular the reaction process being a control of the turbomachines, an output of a service life prognosis for the flow arrangement and/or a display of the strand-related operating behavior on an operating device of the system.
• the method can be carried out, for example, by a control unit which has a data connection to the turbomachines for controlling the turbomachines.
• the service life prognosis can be output and/or the line-related operating behavior can be displayed on the operating device.
• the operating device can be part the system and/or the flow arrangement. For example, the operating device can be integrated into a control station of the system.
• the service life for each of the turbomachines and/or each of the flow resistances can be calculated as a function of the strand-related operating behavior.
• a computer program product comprises instructions which, when executed by a control unit, cause the control unit to carry out a method according to the invention.
• a computer program product thus entails the same advantages as have already been described in detail with reference to a method according to the invention.
• the method can in particular be a computer-implemented method.
• the computer program product can be implemented as computer-readable instruction code.
• the computer program product can be stored on a computer-readable storage medium such as a data disk, a removable drive, a volatile or non-volatile memory, or an integrated memory/processor.
• the computer program product can be made available or made available on a network such as the Internet, from which it can be downloaded by a user or executed online when required.
• the computer program product can be implemented both by means of software and by means of one or more special electronic circuits, i.e. in hardware or in any hybrid form, i.e. by means of software components and hardware components.
• a flow system has a system with a flow arrangement that has a first conveyor line, which has a first flow resistance, and a second conveyor line, which has a second flow resistance and is connected in parallel to the first conveyor line for a fluid flow in the flow arrangement, includes. Furthermore, the flow system has a control unit for carrying out a method according to the invention.
• a flow system according to the invention thus entails the same advantages as have already been described in detail with reference to a method according to the invention and/or a computer program product according to the invention.
• the flow system can also be referred to as a hydraulic system.
• the control unit can be integrated into an external server, in particular into a cloud.
• the system has the control unit.
• the control unit can be integrated into a control station of the system and/or a control unit for the flow machines of the flow arrangement.
• the control unit preferably includes a processor and/or microprocessor for executing the method.
• the control unit can thus also be referred to as a control unit and/or as a regulation unit.
• FIG. 1 shows a flow system according to the invention for carrying out a method according to the invention for processing operating data of a flow arrangement of a plant of the flow system
• 5 shows a schematic representation of method steps of the method
• 6 shows a flow system according to the invention for carrying out the method in a further exemplary embodiment.
• the flow arrangement 2 comprises a first conveyor line 10 which has a first flow resistance 11 and a second conveyor line 20 which has a second flow resistance 21 .
• the first conveyor line 10 and the second conveyor line 20 for the fluid flow 40 are connected in parallel to one another, in particular hydraulically.
• the flow arrangement 2 has a flow inlet 4 and a flow outlet 5 .
• the flow inlet 4 forms a common access for the fluid flow 40 to the first conveyor line 10 and to the second conveyor line 20 of one of the system parts 8.
• the flow outlet 5 forms a common outlet from the first conveyor line 10 and from the second conveyor line 20 to the further system part 8 of the system 3
• the first conveyor line 10 and the second conveyor line 20 have a common operating behavior 200 in which the first conveyor line 10 and the second conveyor line 20 have the same pressure difference between the flow inlet 4 and the flow outlet 5 .
• a volume flow 223 preferably matches at the flow inlet 4 and at the flow outlet 5 and thus also characterizes the joint operating behavior 200.
• the first conveyor line 10 has a first flow machine 12 which is connected in series with the first flow resistance 11 within the first conveyor line 10 .
• the second conveyor line 20 has a second flow machine 22 which is connected in series with the second flow resistance 21 within the second conveyor line 20 .
• the first turbomachine 12 and the second turbomachine 22 are preferably designed as pumps.
• the first flow resistance 11 and the second Flow resistance 21 formed by a check valve. The first flow resistance 11 and the second flow resistance 21 can each be brought into an open state I for allowing a flow in the respective conveyor line and a closed state II for blocking a flow in the respective conveyor line.
• the system also includes a control unit 6 for executing a method 100 according to the invention for processing operating data of a flow arrangement 2 of the system 3.
• the control unit 6 can be part of the system 3 or can be designed separately from the system 3, for example as part of an external server or a cloud.
• a computer program product is preferably provided which comprises instructions which, when executed by the control unit 6, cause the control unit 6 to carry out the method 100.
• the method 100 is shown in a schematic representation of method steps in FIG. 5 .
• a resistance behavior 210 of the flow arrangement 2 is detected 101 with a first reference behavior 211 of the first flow resistance 11 and a second reference behavior 212 of the second flow resistance 21.
• the resistance behavior 210 is shown as an example in FIG second reference behavior 212 with a differential pressure 221.1 compared to a pressure loss number 222 at the first flow resistance 11 or at the second flow resistance 21 is shown.
• the first reference behavior 211 of the first flow resistance 11 and the second reference behavior 212 of the second flow resistance 21 each include a minimum reference parameter 210.1 for characterizing the opening state I and a maximum reference parameter 210.2 for characterizing the closed state II.
• the opening state I can be defined, for example, by the minimum reference parameter 210.1 in the form of a low pressure loss figure 222 and the closed state II can be characterized by the maximum reference parameter 210.2 in the form of a high pressure loss figure 222.
• the method 100 includes a detection 102 of a common operating behavior 200 with at least one common operating parameter 200.1 of the first conveyor line 10 and the second conveyor line 20 depending on a current operating situation.
• the common operating parameter 200.1 can include the pressure difference between the flow inlet 4 and the flow outlet 5 and/or the volume flow 223 at the flow inlet 4 and/or at the flow outlet 5. It is conceivable that only one common operating parameter 200.1 for detecting 102 the common operating behavior 200 is detected or several operating parameters.
• the common operating parameter 200.1 in the system 3 can be measured, in particular by a sensor system 7 of the system 3 and/or the flow arrangement 2, in order to analyze the operation and/or the configuration of the system 3.
• the common operating parameter 200.1 can be provided virtually on the control unit 6 or by the control unit 6, for example in order to simulate the operation and/or the configuration of the system 3.
• a determination 103 of a preferably structure-free substitute model 220 is carried out to determine a branch-related operating behavior 201, 202 of the flow arrangement 2.
• the substitute model 220 takes into account a mutual influence of the first conveyor line 10 and the second conveyor line 20 as a function of the resistance behavior 210 and the common operating behavior 200, in particular for the current operating situation.
• the mutual influence of the first conveyor line 10 and the second conveyor line 20 is taken into account based on a differential pressure direction at the first flow resistance 11 and at the second flow resistance 21 in the equivalent model 220.
• the line-related operating behavior 201, 202 includes in particular a first operating behavior 201 of the first conveyor line 10 and a second operating behavior 202 of the second conveyor line 20.
• the first flow resistance 11 is in the closed state II in the current operating situation and the second flow resistance 21 is in the open state I.
• a differential pressure 221 of the common operating behavior 200 is therefore set for each of the conveyor lines 10, 20 from the respective differential pressure 221.2 at the first and second turbomachine 12, 22 and the respective differential pressure 221.1 at the first and second Flow resistance 11, 21 together.
• the differential pressures 221.1 at the first and second flow resistance 11, 21 have different differential pressure directions here.
• the respective line-related differential pressure 221.1, 221.2 is therefore adapted to the first operating parameter 200.1 in the substitute model 220, in particular in the form of the differential pressure 221 of the common operating behavior
• a lower delivery pressure of the first delivery line 10 can be raised to a higher delivery pressure of the second delivery line 20. Due to the differential pressure direction, a pressure gain in the first delivery line 10, in particular at the first flow resistance 11, and a pressure loss in the second delivery line 20, in particular at the second flow resistance 21, can therefore be taken into account in the substitute model 220, so that the first delivery line 10 and the second delivery line 20 in With respect to the flow inlet 4 and the flow outlet 5 have the same pressure difference.
• 4 shows the equivalent model 220 based on delivery characteristics of the first turbomachine 12 and the second turbomachine 22 with a differential pressure 221 compared to a line-related volume flow 223.1.
• the line-related operating behavior 201, 202 of the flow arrangement 2 is also determined 104 for the current operating situation. This can be done by determining 104 the strand-related operating behavior
• 201 , 202 can be executed iteratively, in particular as a function of a predefined initial condition, by evaluating the substitute model 220 iteratively.
• the line-related operating behavior 201, 202 at least one, preferably several or all, of the following operating parameters of the flow arrangement 2 for the first conveyor line 10 and the second conveyor line 20 of the current operating situation can be calculated.
• a line-related volume flow 223.1 For example, for the first conveyor line 10 and the second conveyor line 20, a line-related volume flow 223.1, a differential pressure 221.1 at the first flow resistance 11 and/or at the second flow resistance 21, a differential pressure 221.2 at the first flow machine 12 and/or at the second flow machine 22, a line-related delivery head and/or a pressure loss factor 222 for the first flow resistance 11 and/or second flow resistance 21 can be calculated.
• a reaction process 105 can also be carried out.
• the reaction process 105 can include, for example, a control of the first turbomachine 12 and the second turbomachine 22, an output of a service life prognosis for the flow arrangement 2 and/or a display of the train-related operating behavior 201, 202 on an operating device 9 of the system 3.
• the method 100 can be used to analyze a current configuration of the flow arrangement 2 with knowledge of the resistance behavior 210 and the common operating behavior 200 and in particular without knowledge of individual strand-related operating parameters. For example, strand-related operating parameters of the flow resistances and/or other components of the conveying strands can be identified and/or calculated. As a result, for example, proof of the current configuration of the flow arrangement 2 can be provided to clarify warranty issues without retrofitting the system 3 .
• the line-related operating behavior 201, 202 of the flow arrangement 2 can also be calculated with different conveying pressures in the conveying lines, in particular without intervening by means of a manual case distinction.
• FIG. 6 shows a flow system 1 according to the invention, which has a system 3 with a flow arrangement 2 for a fluid flow 40 between two system parts 8, in a further exemplary embodiment.
• the flow system 1 also includes a control unit 6 for executing a method 100 according to the invention for processing operating data of a flow arrangement 2 of the plant 3.
• the method 100 and the flow system 1 essentially correspond to the first exemplary embodiment.
• the flow arrangement 2 also has at least one third conveying line 30 with a third flow resistance 31 and a third flow machine 32 .
• the third conveyor line 30 is connected in parallel to the first conveyor line 10 and the second conveyor line 20 . In this case, a third reference behavior of the third flow resistance 31 is also detected when detecting 101 a resistance behavior 210 .

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• General Physics & Mathematics (AREA)
• Testing And Monitoring For Control Systems (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)
• Control Of Positive-Displacement Pumps (AREA)
• Management, Administration, Business Operations System, And Electronic Commerce (AREA)
• Control Of Conveyors (AREA)
• Measuring Fluid Pressure (AREA)
• Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

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• 2021
  • 2021-01-13 DE DE102021100566.3A patent/DE102021100566A1/de active Pending
• 2022
  • 2022-01-12 US US18/261,468 patent/US20240102497A1/en active Pending
  • 2022-01-12 EP EP22700491.8A patent/EP4278099A1/de active Pending
  • 2022-01-12 CN CN202280009547.0A patent/CN117203436A/zh active Pending
  • 2022-01-12 WO PCT/EP2022/050550 patent/WO2022152753A1/de active Application Filing
  • 2022-01-12 CN CN202280010070.8A patent/CN116710661A/zh active Pending
  • 2022-01-12 US US18/261,469 patent/US20240068849A1/en active Pending
  • 2022-01-12 WO PCT/EP2022/050548 patent/WO2022152752A1/de active Application Filing
  • 2022-01-12 BR BR112023014087A patent/BR112023014087A2/pt unknown
  • 2022-01-12 EP EP22700489.2A patent/EP4278098A1/de active Pending
  • 2022-01-12 BR BR112023014095A patent/BR112023014095A2/pt unknown

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