PROCESSING OF OPERATING DATA FROM A PLURALITY OF CONVEYOR LINES CONNECTED IN PARALLEL, WHERE EACH LINE HAS A FLOW RESISTANCE

Abstract

The invention relates to a method (100) for processing operating data of a flow arrangement (2) of an apparatus (3) comprising a first conveying line (10) having a first flow resistor (11) and a second conveying line (20) having a second flow resistor (21) and being connected in parallel to the first conveying line (10) for a fluid flow (40) in the flow arrangement (2). Furthermore, the invention relates to a computer program product, and to a flow system (1).

Claims

1. A method for processing operating data of a flow arrangement of an apparatus with a first conveying line, which has a first flow resistor, and a second conveying line, which has a second flow resistor and is connected in parallel with the first conveying line for a fluid flow in the flow arrangement, wherein the method comprises: detecting a resistance behavior of the flow arrangement with a first reference behavior of the first flow resistor and a second reference behavior of the second flow resistor, detecting a common operating behavior with at least one common operating parameter of the first conveying line and the second conveying line as a function of a current operating situation, determining a substitute model for determining a strand-related operating behavior of the flow arrangement, in which a mutual influence of the first conveying line and the second conveying line is taken into account as a function of the resistance behavior and the common operating behavior, determining the strand-related operating behavior of the flow arrangement for the current operating situation as a function of the substitute model.

2. The method according to claim 1, wherein the first conveying line has a first flow machine and the second conveying line has a second flow machine, at least the first flow machine being connected in series with the first flow resistor or the second flow machine being connected in series with the second flow resistor.

3. The method according to claim 2, wherein at least the first flow machine or the second flow machine is configured as a pump, the first flow machine and the second flow machine having different differential pressures in the form of delivery pressures for delivering the fluid flow in the current operating situation.

4. The method according to claim 1, wherein the first flow resistor and the second flow resistor can each be brought into an opening state for allowing a flow and a closing state for blocking a flow, the first flow resistor being in the closing state in the current operating situation and the second flow resistor being in the opening state.

5. The method according to claim 1, wherein at least the first reference behavior or the second reference behavior each comprises at least a minimum reference parameter for characterizing the opening state or a maximum reference parameter for characterizing the closing state.

6. The method according to claim 1, wherein the first flow resistor and the second flow resistor are each formed by a check valve.

7. The method according to claim 1, wherein the flow arrangement has a flow inlet and a flow outlet, the common operating behavior comprising at least a pressure difference between the flow inlet and the flow outlet or a volume flow at least at the flow inlet or at the flow outlet.

8. The method according to claim 1, wherein the mutual influence of the first conveying line and the second conveying line is taken into account in the substitute model by means of a differential pressure direction at the first flow resistor and at the second flow resistor, respectively.

9. The method according to claim 1, wherein when determining the strand-related operating behavior, at least one of the following operating parameters of the flow arrangement is calculated for the first conveying line and the second conveying line of the current operating situation: strand-related volume flow, differential pressure at least at the first flow resistor or at the second flow resistor, differential pressure at least at the first flow machine or at the second flow machine, strand-related delivery head, pressure drop figure for at least the first flow resistor or the second flow resistor.

10. The method according to claim 1, wherein the determination of the strand-related operating behavior is carried out iteratively.

11. The method according to claim 1, wherein the flow arrangement has at least one third conveying line with a third flow resistor, which is connected in parallel with the first conveying line and second conveying line, a third reference behavior of the third flow resistor being detected when the resistance behavior is detected.

12. The method according to claim 1, wherein the common operating parameter is measured or virtually provided in the apparatus.

13. The method according to claim 1, wherein a reaction process is carried out as a function of the strand-related operating behavior.

14. A computer program product comprising instructions that, when executed by a control device, cause the control device to execute a method according to claim 1.

15. A flow system comprising, an apparatus with a flow arrangement comprising a first conveying line having a first flow resistor and a second conveying line having a second flow resistor and being connected in parallel to the first conveying line for a fluid flow in the flow arrangement, and a control device for carrying out a claim 1.

Description

[0044] Further advantages, features and details of the invention will be apparent from the following description, in which embodiments of the invention are described in detail with reference to the drawings. The features mentioned in the claims and in the description may each be essential to the invention individually or in any combination. It shows schematically:

[0045] FIG. 1A flow system according to the invention for carrying out a method according to the invention for processing operating data of a flow arrangement of an apparatus of the flow system,

[0046] FIG. 2A resistance behavior of the flow arrangement,

[0047] FIG. 3A substitute model for determining a strand-related operating behavior,

[0048] FIG. 4 Characteristic curves of flow machines of the flow arrangement,

[0049] FIG. 5A schematic representation of method steps/stages, and

[0050] FIG. 6A flow system according to the invention for carrying out the method in a further embodiment.

[0051] In the following description of some embodiments of the invention, the identical reference signs are used for the same technical features even in different embodiments.

[0052] FIG. 1 shows a flow system 1 according to the invention, which has an apparatus 3 with a flow arrangement 2 for a fluid flow 40 between two apparatus parts 8. It is conceivable that the apparatus parts 8 are connected and form a fluid cycle with the flow arrangement 2. The flow arrangement 2 comprises a first conveying line 10, which has a first flow resistor 11, and a second conveying line 20, which has a second flow resistor 21. Thereby, the first conveying line 10 and the second conveying line 20 are connected in parallel to each other, in particular hydraulically, for the fluid flow 40. Furthermore, 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 conveying line 10 and to the second conveying line 20 from one of the apparatus parts 8, and the flow outlet 5 forms a common outlet from the first conveying line 10 and from the second conveying line 20 to the further apparatus part 8 of the apparatus 3. As a result, the first conveying line 10 and the second conveying line 20 have a common operating behavior 200, in which the first conveying line 10 and the second conveying line have an equal pressure difference between the flow inlet 4 and the flow outlet 5. Furthermore, a volume flow 223 preferably coincides at the flow inlet 4 and the flow outlet and thus also characterizes the common operating behavior 200.

[0053] The first conveying line 10 has a first flow machine 12 connected in series with the first flow resistor 11 within the first conveying line 10. The second conveying line 20 has a second flow machine 22, which is connected in series with the second flow resistor 21 within the second conveying line 20. Preferably, the first flow machine 12 and the second flow machine 22 are configured as a pump. Furthermore, the first flow resistor 11 and the second flow resistor 21 are each formed by a check valve. In this case, the first flow resistor 11 and the second flow resistor 21 can each be brought into an opening state I for allowing a flow in the respective conveying line and a closing state II for blocking a flow in the respective conveying line.

[0054] Further, the system comprises a control device 6 for executing a method 100 according to the invention for processing operating data of a flow arrangement 2 of the apparatus 3. The control device 6 may be part of the apparatus 3 or may be implemented separately from the apparatus 3, for example as part of an external server or a cloud. Preferably, a computer program product is provided comprising instructions which, when executed by the control device 6, cause the control device 6 to execute the method 100. The method 100 is shown in schematic representation of method steps/stages in FIG. 5.

[0055] In the method 100, a detection 101 of a resistance behavior 210 of the flow arrangement 2 is carried out with a first reference behavior 211 of the first flow resistor 11 and a second reference behavior 212 of the second flow resistor 21. The resistance behavior 210 is exemplarily shown in FIG. 2 on the basis of characteristic curves of the first reference behavior 211 and the second reference behavior 212 with a differential pressure 221.1 compared to a pressure drop FIG. 222 at the first flow resistor 11 and at the second flow resistor 21, respectively. Here, the first reference behavior 211 of the first flow resistor 11 and the second reference behavior 212 of the second flow resistor 21 each comprise a minimum reference parameter 210.1 for characterizing the opening state I and a maximum reference parameter 210.2 for characterizing the closing state II. The opening state I can, for example, be characterized by the minimum reference parameter 210.1 in the form of a low pressure drop FIG. 222 and the closing state II can be characterized by the maximum reference parameter 210.2 in the form of a high pressure drop FIG. 222.

[0056] Furthermore, the method 100 comprises detecting 102 a common operating behavior 200 with at least one common operating parameter 200.1 of the first conveying line 10 and the second conveying line 20 as a function of a current operating situation. The common operating parameter 200.1 may comprise 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 multiple operating parameters.

[0057] Furthermore, the common operating parameter 200.1 may be measured in the apparatus 3, in particular by a sensor system 7 of the apparatus 3 and/or the flow arrangement 2, to analyze the operation and/or configuration of the apparatus 3. Alternatively, the common operating parameter 200.1 may be provided virtually at the control device 6 or by the control device 6, for example to simulate the operation and/or configuration of the apparatus 3.

[0058] Subsequently, in the method 100, a determination 103 of a, preferably structureless, substitute model 220 for determining a strand-related operating behavior 201, 202 of the flow arrangement 2 is carried out. By means of the substitute model 220, a mutual influence of the first conveying line 10 and the second conveying line 20 is taken into account as a function of the resistance behavior 210 and the common operating behavior 200, in particular for the current operating situation. The consideration of the mutual influence of the first conveying line 10 and the second conveying line 20 is thereby carried out on the basis of a respective differential pressure direction at the first flow resistor 11 and at the second flow resistor 21 in the substitute model 220. The strand-related operating behavior 201, 202 thereby comprises in particular a first operating behavior 201 of the first conveying line 10 and a second operating behavior 202 of the second conveying line 20. For example, as shown in FIG. 3, the first flow machine 12 and the second flow machine 22 may have different differential pressures 221.2 in the form of delivery pressures for delivering the fluid flow 40 in the current operating situation. As a result, the first flow resistor 11 is in the closing state II and the second flow resistor 21 is in the opening state I in the current operating situation. A differential pressure 221 of the common operating behavior 200 therefore comprises, for each of the conveying lines 10, 20, the respective differential pressure 221.2 at the first and second flow machines 12, 22 and the respective differential pressure 221.1 at the first and second flow resistors 11, 21. The differential pressures 221.1 at the first and second flow resistors 11, 21 have different differential pressure directions here. Based on the differential pressure direction, an adaptation of the respective strand-related differential pressure 221.1, 221.2 to the first operating parameter 200.1, in particular in the form of the differential pressure 221 of the common operating behavior 200, therefore takes place in the substitute model 220. For this purpose, a raising of a lower delivery pressure of the first conveying line 10 to a higher delivery pressure of the second conveying line 20 can take place. Due to the differential pressure direction, therefore, a pressure gain of the first conveying line 10, in particular at the first flow resistor 11, and a pressure loss at the second conveying line 20, in particular at the second flow resistor 21, can be taken into account in the substitute model 220, so that the first conveying line 10 and the second conveying line have the same pressure difference with respect to the flow inlet 4 and the flow outlet 5. FIG. 4 shows the substitute model 220 based on conveying characteristics of the first flow machine 12 and the second flow machine 22 with a differential pressure 221 with respect to a strand-related volume flow 223.1.

[0059] As a function of the substitute model 220, a determination 104 of the strand-related operating behavior 201, 202 of the flow arrangement 2 for the current operating situation is further performed. For this purpose, the determination 104 of the strand-related operating behavior 201, 202 can be carried out iteratively, in particular as a function of a predefined initial condition, by evaluating the substitute model 220 iteratively. As a result, when determining 104 the strand-related operating behavior 201, 202, at least one, preferably several or all, of the following operating parameters of the flow arrangement 2 can be calculated for the first conveying line 10 and the second conveying line 20 of the current operating situation. For example, a strand-related volume flow 223.1, a differential pressure 221.1 at the first flow resistor 11 and/or at the second flow resistor 21, a differential pressure 221.2 at the first flow machine 12 and/or at the second flow machine 22, a strand-related delivery head and/or a pressure drop FIG. 222 for the first flow resistor 11 and/or second flow resistor 21 can be calculated in each case for the first conveying line 10 and the second conveying line 20.

[0060] As a function of the strand-related operating behavior 201, 202, a reaction process 105 may further be executed. The reaction process 105 may comprise, for example, a control of the first flow machine 12 and the second flow machine 22, an output of a service life forecast for the flow arrangement 2 and/or a display of the strand-related operating behavior 201, 202 at an operating device 9 of the apparatus 3.

[0061] By means of the method 100, a current configuration of the flow arrangement 2 can be analyzed in knowledge of the resistance behavior 210 and the common operating behavior 200 and, in particular, in ignorance of individual strand-related operating parameters. For example, strand-related operating parameters of the flow resistors and/or further components of the conveying lines can be identified and/or calculated in this process. In this way, for example, proof of the current configuration of the flow arrangement 2 can be provided for clarifying warranty issues without having to retrofit the apparatus 3. Since it has also been recognized in the context of the present invention that the differential pressure direction in the substitute model 220 can be used to take into account an increase in a lower delivery pressure of one of the conveying lines to a higher delivery pressure of the respective other conveying line, the strand-related operating behavior 201, 202 of the flow arrangement 2 can also be calculated for different delivery pressures in the conveying lines, in particular without intervening by means of a manual case discrimination.

[0062] FIG. 6 shows a flow system 1 according to the invention, which comprises an apparatus 3 with a flow arrangement 2 for a fluid flow 40 between two apparatus parts 8, in a further embodiment. The flow system 1 further comprises a control device 6 for carrying out a method 100 according to the invention for processing operating data of a flow arrangement 2 of the apparatus 3. The method 100 and the flow system 1 substantially correspond to the first embodiment example. However, in this case, the flow arrangement 2 further comprises at least a third conveying line 30 having a third flow resistor 31 and a third flow machine 32. The third conveying line 30 is connected in parallel with the first conveying line and second conveying line 20. Thereby, a third reference behavior of the third flow resistor 31 is further detected when detecting 101 a resistance behavior 210. Further, a mutual influence of the first conveying line 10, the second conveying line 20, and the third conveying line 30 is considered in determining 103 a substitute model 220.

[0063] The foregoing explanation of the embodiments describes the present invention exclusively in the context of examples. Of course, individual features of the embodiments may be freely combined with one another, provided that this is technically expedient, without departing from the scope of the present invention.

LIST OF REFERENCE SIGNS

[0064] 1 Flow system [0065] 2 Flow arrangement [0066] 3 Apparatus [0067] 4 Flow inlet [0068] 5 Flow outlet [0069] 6 Control device [0070] 7 Sensor system [0071] 8 Apparatus part [0072] 9 Operating device [0073] 10 First conveying line [0074] 11 First flow resistor [0075] 12 First flow machine [0076] 20 Second conveying line [0077] 21 Second flow resistor [0078] 22 Second flow machine [0079] 30 Third conveying line [0080] 31 Third flow resistor [0081] 32 Third flow machine [0082] 40 Fluid flow [0083] 200 Common operating behavior [0084] 200.1 First operating parameter [0085] 201 First operating behavior [0086] 202 Second operating behavior [0087] 210 Resistance behavior [0088] 210.1 Minimum reference parameter [0089] 210.2 Maximum reference parameter [0090] 211 First reference behavior [0091] 212 Second reference behavior [0092] 100 Method [0093] 101 Detection of 210 [0094] 102 Detection of 200 [0095] 103 Determining 220 [0096] 104 Determining 201, 202 [0097] 105 Reaction process [0098] 220 Substitute model [0099] 221 Differential pressure [0100] 221.1 Differential pressure at 11 or 21 [0101] 221.2 Differential pressure at 12 or 22 [0102] 222 Pressure drop FIG. [0103] 223 Volume flow [0104] 223.1 Strand-related volume flow [0105] I Opening state [0106] II Closing state