Pump operation support method and pump operation support device

Abstract

The invention relates to a pump operation support method and a pump operation support device. The pump operation support method comprises: a performance characteristic acquisition step for acquiring a flow rate / total lift representative performance curve and a rated rotational speed during rated operation as performance characteristics of a device to be supported, the performance characteristics being determined by the model of a pump device; an installation condition acquisition step for acquiring the actual lift as the installation condition of the device to be supported; an operation status acquisition step for acquiring the operation frequency, the suction pressure, and the discharge pressure as the operation status of the device to be supported; and a first operation support step for calculating an operation condition during a reference operation when the device to be supported is operated in accordance with the installation condition and the operation condition, the first operation support step for calculating a flow rate and a total lift during the reference operation on the basis of the performance characteristics, the installation condition, and the operation condition.

Description

Technical Field

[0001] The present invention relates to a pump operation support method and a pump operation support device. Background Art

[0002] Conventionally, when a pump device is operated under a predetermined environment, an actual flow rate is measured using a flow meter to confirm the operating point of the pump device (see, for example, Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 9-112440 Summary of the invention

[0006] When confirming the operating point of a pump device by the method disclosed in Patent Document 1, it is necessary to prepare an expensive flow meter in advance, and it is also necessary to install the flow meter at the installation site of the pump device. Therefore, a method for simply confirming the operating point of a pump device at the installation site of the pump device is also desired. In addition, a method is also desired that can confirm the operating point of a pump device not only at the installation site of the pump device but also at a remote management center far from the installation site, and a method is also desired that can confirm not only the current status of the pump device when it is installed, but also the operating point of the pump device when it was operated in the past.

[0007] In view of the above-mentioned problems, an object of the present invention is to provide a pump operation support method and a pump operation support device that can easily support the operation of a pump device without using a flow meter.

[0008] In order to achieve the above-mentioned object, a pump operation support method according to one embodiment of the present invention supports the operation of a pump device using a computer.

[0009] The pump operation support method includes the following steps:

[0010] The performance characteristics acquisition process is to obtain the flow rate and total head representative performance curve (QH typical (Q)) and rated rotation speed (N rated ), as a performance characteristic of the supported device determined by the model (Mn) of the pump device;

[0011] Set up a status acquisition process to obtain the actual lift (H static ), as a setting condition when setting the support target device;

[0012] The operation status acquisition process acquires the operation frequency (F out ), suction pressure (P suction ) and discharge pressure (P discharge), as the operating condition of the support target device when it operates according to the setting condition; and

[0013] a first operation support step of performing a first operation support process, wherein the first operation support process is to calculate an operation condition when the support target device is operated according to the installation condition and the reference operation condition;

[0014] The first operation support step calculates the flow rate (Q) during the reference operation based on the performance characteristics, the installation status, and the operation status. now ) and total head (H now ).

[0015] Effects of the Invention

[0016] According to the pump operation support method of the present invention, the first operation support step calculates the flow rate (Q) during the reference operation based on the performance characteristics of the support target device acquired in the performance characteristics acquisition step, the installation status of the support target device acquired in the installation status acquisition step, and the operating status of the support target device acquired in the operating status acquisition step. now ) and total head (H now ) is used as the operating condition when the supported device is operated according to its installation status and its operating status. Therefore, the operation support of the pump device can be easily performed without using a flow meter.

[0017] Other problems, structures, and effects than those described above will become apparent from the modes for carrying out the invention described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 1 is a diagram showing an overall configuration of an example of the pump operation support system 1 .

[0019] Figure 2 It is a block diagram showing an example of the pump operation support device 3 .

[0020] Figure 3 3 is a data structure diagram showing an example of the operation support acquisition data 321 and the pump database 40 .

[0021] Figure 4 This is a data structure diagram showing an example of the operation support internal data 322 .

[0022] Figure 5 It is a diagram showing an example of the hardware configuration of a computer 900 constituting each device.

[0023] Figure 6 This is a flowchart showing an example of a pump operation support method implemented by the pump operation support device 3 .

[0024] Figure 7 1 is a diagram showing an example of the model number input screen 10 .

[0025] Figure 8 1 is a diagram showing an example of the setting purpose input screen 11 .

[0026] Fig. 9 1 is a diagram showing an example of the actual lift input screen 12 .

[0027] Fig.10 1 is a diagram showing an example of the operating frequency input screen 13 .

[0028] Fig.11 It is a diagram showing an example of the pressure input screen 14 .

[0029] Fig.12 1 is a diagram showing an example of the measurement point height difference input screen 15 .

[0030] Fig.13 This is a flowchart showing an example of the first operation support process (step S200 ) performed by the first operation support unit 303 .

[0031] Fig.14 1 is a flowchart showing an example of the first operation support process (step S200) performed by the first operation support unit 303. Fig.13 (Continuation).

[0032] Fig.15 It is the flow rate and total head performance curve (QH now (Q)), and the total head during standard operation (H now ) and the flow rate during standard operation (Q now ) is a diagram of a calculation example.

[0033] Fig.16 Is the system curve (CV sys (Q)), and the flow rate during rated operation (Q rated ) and total head (H rated ) is a diagram of a calculation example.

[0034] Fig.17 This is a graph showing the relationship between the flow rate and the total head during standard operation, and the relationship between the flow rate and the power consumption.

[0035] Fig.18 This is a diagram showing an example of the first operation support screen 16 .

[0036] Fig.19 This is a flowchart showing an example of the second operation support process (step S300 ) performed by the second operation support unit 304 .

[0037] Fig. 20 1 is a flowchart showing an example of the second operation support process (step S300) performed by the second operation support unit 304. Fig.19 (Continuation).

[0038] Fig.21 This is a diagram showing an example of the second operation support screen 17 .

[0039] Fig. 22 This is a graph showing the relationship between the flow rate and the total head during set flow rate operation, and the relationship between the flow rate and power consumption.

[0040] Fig.23 It is a diagram showing an example of the updated second operation support screen 17 a . DETAILED DESCRIPTION

[0041] Hereinafter, embodiments for implementing the present invention will be described with reference to the accompanying drawings. Hereinafter, the necessary scope will be schematically indicated in the description for achieving the purpose of the present invention, and the necessary scope will be mainly described in the description of this part of the present invention, and any omitted description will be regarded as a known technology.

[0042] (Implementation Method)

[0043] Figure 1 1 is an overall configuration diagram showing an example of a pump operation support system 1. The pump operation support system 1 functions as a system that supports a user of the pump device 2 (the owner, manager, installer, inspector, and repair operator of the pump device 2, etc.) in setting operating conditions of the pump device 2 when the pump device 2 is installed as a support target device.

[0044] The pump operation support system 1 specifically includes: a pump device 2 as a support target device; a pump operation support device 3 used by a user of the pump device 2; and a pump database device 4 for managing data related to performance characteristics of the pump device 2. Each device 2 to 4 is, for example, a general-purpose or dedicated computer (see the following). Figure 5 ) and are configured to be able to mutually transmit and receive various data via the network 5. In addition, the number of each device 2 to 4 may be multiple, and the configuration of the network 5 is not limited to Figure 1 Example.

[0045] The pump device 2 is a rotary machine that transports liquids such as water (drinking water, sewage, fresh water, seawater, industrial water, etc.), chemical liquids, and petroleum (crude oil and refined oil). The pump device 2 is used, for example, in water supply equipment such as water supply and sewerage, and factory equipment such as petroleum refining, power generation, manufacturing, and chemical processing, but is not limited to these examples and can also be used in systems that utilize any liquid. In addition, in this embodiment, the pump device 2 that functions as a water supply device for transporting water is mainly described as a case where it is applied as a support target device.

[0046] The pump device 2 includes: a pump unit 20; a motor 21 that is a driving source of the pump device 2; and a pump control panel 22 that controls the operation of the pump device 2. The pump unit 20 is composed of, for example, an impeller, a rotating shaft, a bearing, a mechanical seal, a gland gasket, a housing, a pipe, etc. The pump control panel 22 is composed of, for example, a converter, a power supply circuit, a communication circuit, an operation display unit, etc. The pump control panel 22 controls the rotation operation of the motor 21 based on, for example, a command frequency set as an operating condition and a detection value of a sensor type (not shown) provided in each part, or controls the communication operation when various information is sent and received between the pump operation support device 3 and the pump database device 4. In addition, the motor 21 may also be composed of a motor unit having at least one of a converter and a power supply circuit built in.

[0047] There are many types of pump devices 2 with different performance characteristics, and the performance characteristics are determined according to the model. As performance characteristics, for example, flow rate·total head representative performance curve during rated operation, flow rate·power consumption representative performance curve, rated rotation speed, number of motor poles, etc. can be cited, but it is not limited to these. The model is represented by a string of alphanumeric characters, for example, and can determine not only the performance characteristics of the pump device 2, but also various specifications of the pump device 2 (structure, material, caliber, etc.).

[0048] The pump operation support device 3 is composed of, for example, a fixed computer and a portable computer, and is used by the user of the pump device 2. The pump operation support device 3 is installed with programs such as an application and a browser, receives various input operations, and outputs various information (screen information, etc.) via a display screen and sound. In this embodiment, the pump operation support device 3 is an example of a portable computer, such as Figure 1 As shown, the case where the device is mainly composed of a smart phone is described.

[0049] The pump database device 4 is composed of, for example, a server computer and a cloud computer. The pump database device 4 has a pump database 40, which can register performance characteristic data indicating the performance characteristics of each pump device 2 for each model of the pump device 2 (see the following description). Figure 3 When the pump database device 4 receives a data transmission request including the model of the pump device 2 from the pump operation support device 3, it reads the performance characteristic data corresponding to the model from the pump database 40 and transmits it to the pump operation support device 3 which is the transmission source of the data transmission request.

[0050] The network 5 is composed of wired communication or wireless communication, or a combination of wired communication and wireless communication according to an arbitrary communication standard. Specifically, for example, a standardized communication network such as the Internet, or a communication network managed in a building such as a local network, or a combination of these communication networks can be used. In addition, as a communication standard for wireless communication, an international standard is typically used. As communication methods of international standards, there are methods such as IEEE802.15.4, IEEE802.15.1, IEEE802.15.11a, 11b, 11g, 11n, 11ac, 11ad, ISO / IEC14513-3-10, and IEEE802.15.4g. In addition, methods such as Bluetooth (registered trademark), Bluetooth Low Energy, Wi-Fi, ZigBee (registered trademark), Sub-GHz, EnOcean (registered trademark), and LTE can also be used.

[0051] Figure 2 2 is a block diagram showing an example of the pump operation support device 3. The pump operation support device 3 includes a control unit 30, a communication unit 31, a storage unit 32, an input unit 33, and an output unit 34 as main components.

[0052] The control unit 30 functions as a performance characteristic acquisition unit 300, an installation status acquisition unit 301, an operation status acquisition unit 302, a first operation support unit 303, and a second operation support unit 304 by, for example, executing a pump operation support program 320 stored in the storage unit 32. That is, each unit 300 to 304 of the control unit 30 functions as a main body for executing each step (performance characteristic acquisition step, installation status acquisition step, operation status acquisition step, first operation support step, and second operation support step) in the pump operation support method.

[0053] The communication unit 31 is connected to the network 5, and functions as a communication interface for sending and receiving various data between the pump device 2 and the pump database device 4, for example. The storage unit 32 stores various programs (operating system and pump operation support program 320, etc.) and data (operation support acquisition data 321 and operation support internal data 322, etc.) used by the operation of the pump operation support device 3. The input unit 33 accepts various input operations, and the output unit 34 outputs various information via a display screen and sound, thereby functioning as a user interface.

[0054] Figure 3 3 is a data structure diagram showing an example of the operation support acquisition data 321 and the pump database 40 . Figure 4 This is a data structure diagram showing an example of the operation support internal data 322 .

[0055] In the pump database 40, for each model of the pump device 2, data indicating the performance characteristics ( Figure 3 In the example, the flow rate and total head representative performance curve (QH typical (Q)), flow rate and power consumption representative performance curve (QW typical (Q)), rated rotation speed (N rated The pump database 40 is updated appropriately by adding, correcting, deleting, etc. the model and performance characteristics based on information provided by the manufacturer of the pump device 2, for example.

[0056] The operation support acquisition data 321 stores data of performance characteristics acquired by the performance characteristics acquisition unit 300 when the pump operation support device 3 is in operation, data of the installation status acquired by the installation status acquisition unit 301, and data of the operation status acquired by the operation status acquisition unit 302. The operation support internal data 322 stores data of processing results (interim calculation results and final calculation results, etc.) when the first operation support unit 303 and the second operation support unit 304 perform operation support processing when the pump operation support device 3 is in operation. In addition, the acquisition method and calculation method of various data stored in the operation support acquisition data 321 and the operation support internal data 322 will be described later.

[0057] The performance characteristic acquisition unit 300 acquires at least a flow rate and a total head representative performance curve (QH typical (Q)) and rated rotation speed (N rated ), as the performance characteristics of the support target device determined according to the model (Mn) of the pump device 2, and the flow rate and power consumption representative performance curve (QW) during rated operation can also be obtained. typical (Q)) and the number of motor poles (PoleCount). For example, the performance characteristic acquisition unit 300 generates model input screen information that allows the input of a model (Mn), based on the model input screen information inputted to the model input screen (see below). Figure 7) in the pump database device 4, and obtains the performance characteristics of the supported device from the pump database device 4 as a response. In addition, in the case where the pump database 40 is stored in the storage unit 32, the performance characteristics of the supported device may be obtained by referring to the pump database 40 based on its model. In addition, in the case where the data of the performance characteristics of the supported device is stored in the pump control panel 22 of the present device, the performance characteristics acquisition unit 300 may also send a data transmission request for the performance characteristics to the pump device 2 as the supported device, and obtain the performance characteristics of the supported device from the pump device 2 as a response. In this case, the user input of the model may be omitted.

[0058] The installation status acquisition unit 301 may at least acquire the actual lift (H static ), and further obtains the setting purpose (Use) as the setting status when setting the support target device. For example, the setting status acquisition unit 301 generates setting status input screen information that can input the setting status of the pump device 2 as the support target device, and uses the setting status input screen (refer to the later-described setting status input screen information) based on the setting status input screen information. Figure 8 as well as Fig. 9 ) accepts user input, thereby acquiring the setting status of the supported device. In addition, when the data of the setting status of the supported device is stored in the pump control panel 22 of the device, the setting status acquisition unit 301 may send a setting status data transmission request to the pump device 2 as the supported device, and acquire the setting status of the supported device from the pump device 2 as a response. In addition, when the data of the setting status of the supported device is stored in the storage unit 32 or an external storage device and storage medium, the setting status acquisition unit 301 may acquire the setting status of the supported device by referring to the data.

[0059] The operating status acquisition unit 302 may also acquire at least the operating frequency (F out ), suction pressure (P suction ) and discharge pressure (P discharge ), and further obtain the height difference of the measuring point (H diff ), as the operating status of the supported device when it is operating according to the set status. For example, the operating status acquisition unit 302 generates operating status input screen information that can input the operating status of the pump device 2 as the supported device, and the operating status input screen based on the operating status input screen information (see the later-described Figures 10 to 12) accepts user input, thereby acquiring the operating status of the supported device. In addition, when the data on the operating status of the supported device is stored in the pump control panel 22 of the device, the operating status acquisition unit 302 may send a data transmission request for the operating status to the pump device 2 as the supported device, and acquire the operating status of the supported device from the pump device 2 as a response. In addition, when the data on the operating status of the supported device is stored in the storage unit 32 or an external storage device and storage medium, the operating status acquisition unit 302 may acquire the operating status of the supported device by referring to the data.

[0060] The first operation support unit 303 performs a first operation support process, which is to calculate the operating conditions of the reference operation when the supported device is operated according to the installation status and the operating status. At this time, the first operation support unit 303 calculates the operating conditions of the reference operation based on the performance characteristics, the installation status and the operating status, and stores the calculation results of various data as the operation support internal data 322. The operating conditions of the reference operation include, for example, the flow rate (Q now ), total head (H now ) and Energy Saving Rate (ESR now ) etc. The reference operation time corresponds to the time point when the supported device is operating according to the setting condition and the operating condition, but it can also be the present time point or the past time point. In addition, the reference operation time can also be the condition of the pump device 2 during the installation, inspection, repair, etc., or the condition during normal operation.

[0061] In addition, the first operation support unit 303 functions as a user interface for the first operation support process. For example, the first operation support unit 303 generates first operation support screen information that displays the calculation result of the operation condition during the reference flow operation calculated by the first operation support process, and displays the first operation support screen based on the first operation support screen information (see the following description). Fig.18 ).

[0062] The second operation support unit 304 performs a second operation support process in which a set flow rate (Q) is received as a flow rate when the support target device is operated according to the setting condition. set ), the second operation support unit 304 calculates the operation conditions of the supported device according to the setting status and the set flow rate operation, and stores the calculation results of various data as the operation support internal data 322. The operating conditions of the set flow rate operation include, for example, the command frequency (F cmdset ), total head when setting flow rate (H set ) and Energy Saving Rate (ESRset )wait.

[0063] In addition, the second operation support unit 304 functions as a user interface for the second operation support process. For example, the second operation support unit 304 generates second operation support screen information and displays a second operation support screen based on the second operation support screen information (see the following description). Fig.21 as well as Fig.23 ), wherein the second operation support screen information comprises: a set flow input unit, which can input a set flow (Q set ); a second calculation result display unit, which displays the set flow rate (Q set ) the calculation result of the operating condition when the flow rate is set and calculated by the second operation support processing; and the command frequency setting instruction unit, which can input the command frequency (F) when the flow rate is set and operated cmdset ) is set in a setting instruction of the supported device as an operating condition during operation at a set flow rate calculated by the second operation support processing.

[0064] Figure 5 It is a diagram showing an example of the hardware configuration of a computer 900 constituting each device.

[0065] The pump device 2, the pump operation support device 3, and the pump database device 4 are each composed of a general-purpose or dedicated computer 900. Figure 3 As shown, the computer 900 includes, as its main components, a bus 910, a processor 912, a memory 914, an input device 916, an output device 917, a display device 918, a storage device 920, a communication I / F (interface) unit 922, an external device I / F unit 924, an I / O (input and output) device I / F unit 926, and a media input and output unit 928. In addition, the above-mentioned components may be omitted as appropriate depending on the use of the computer 900.

[0066] The processor 912 is composed of one or more arithmetic processing devices (CPU (Central Processing Unit), MPU (Micro-processing unit), DSP (digital signal processor), GPU (Graphics Processing Unit) etc.), and acts as a control unit that coordinates the entire computer 900. The memory 914 stores various data and programs 930, and is composed of, for example, a volatile memory (DRAM, SRAM etc.) that functions as a main memory, a non-volatile memory (ROM), a flash memory etc.

[0067] The input device 916 is composed of, for example, a keyboard, a mouse, a numeric keypad, an electronic pen, etc., and functions as an input unit. The output device 917 is composed of, for example, a voice (sound) output device, a vibration device, etc., and functions as an output unit. The display device 918 is composed of, for example, a liquid crystal display, an organic EL display, electronic paper, a projector, etc., and functions as an output unit. The input device 916 and the display device 918 can also be integrally formed like a touch panel display. The storage device 920 is composed of, for example, an HDD, an SSD, etc., and functions as a storage unit. The storage device 920 stores various data necessary for the execution of the operating system and the program 930.

[0068] The communication I / F unit 922 communicates with a network 940 (which may also communicate with the Internet or an enterprise network) via wired or wireless communication. Figure 1 The external device I / F unit 924 is connected to an external device 950 such as a camera, printer, scanner, reader / writer, etc. by wire or wirelessly, and functions as a communication unit that transmits and receives data between external devices 950 according to the prescribed communication specifications. The I / O device I / F unit 926 is connected to various I / O devices 960 such as sensors and actuators, and functions as a communication unit that transmits and receives various signals and data such as detection signals obtained by sensors and control signals for actuators between I / O devices 960. The media input / output unit 928 is composed of a drive device such as a DVD (Digital Versatile Disc) drive and a CD (Compact Disc) drive, a memory card slot, and a USB connector, and reads and writes data relative to a medium (non-temporary storage medium) 970 such as a DVD, CD, memory card, and USB memory.

[0069] In the computer 900 having the above-mentioned structure, the processor 912 calls the program 930 stored in the storage device 920 to the memory 914 and executes it, and controls each part of the computer 900 via the bus 910. In addition, the program 930 can also be stored in the memory 914 instead of the storage device 920. The program 930 can also be recorded in the medium 970 in the form of an installable file or an executable file, and provided to the computer 900 via the media input and output unit 928. The program 930 can also be downloaded via the communication I / F unit 922 and via the network 940, and thus provided to the computer 900. In addition, the computer 900 can also realize various functions realized by the execution of the program 930 by the processor 912 by hardware such as FPGA (field-programmable gate array) and ASIC (application specific integrated circuit).

[0070] The computer 900 is an electronic device of any form, such as a fixed computer or a portable computer. The computer 900 may be a client computer, a server computer, or a cloud computer.

[0071] (Pump operation support method)

[0072] Figure 6 This is a flowchart showing an example of a pump operation support method based on the pump operation support device 3. The following describes a case where, when a setup operator (user) of the pump device 2 that is the support target device performs a test run after the setup of the pump device 2, a pump operation support program 320 (application for a smart phone) installed in a smart phone that functions as the pump operation support device 3 is started in order to confirm and set the operating conditions of the pump device 2.

[0073] First, in step S100 , the performance characteristic acquisition unit 300 generates model input screen information in response to activation of the pump operation support program 320 , and displays the model input screen 10 on the output unit 34 based on the model input screen information.

[0074] Figure 7 1 is a diagram showing an example of a model input screen 10. The model input screen 10 displays the model (Mn) of the pump device 2 in a table format, for example, and has a model input unit 100 that can accept the input of the model (Mn) by the user. The table of models (Mn) displayed in the model input unit 100 can be provided from the pump database device 4, for example, or can be stored in the storage unit 32. In addition, the model input unit 100 can also be capable of accepting the input of a string. Figure 7 2 shows a case where “P001-AAA-03” is selected as the model number (Mn) of the pump device 2 in the selection box 100 a .

[0075] Furthermore, in step S101, when the performance characteristic acquisition unit 300 receives the user input of the model (Mn) (here, "P001-AAA-03") of the support target device through the model input screen 10, it sends a data transmission request including the model (Mn) to the pump database device 4, and acquires the performance characteristics of the support target device determined by the model (Mn) as a response. Here, the performance characteristic acquisition unit 300 acquires the flow rate and total head representative performance curve (QH typical (Q)), flow rate and power consumption representative performance curve (QW typical (Q)), rated rotation speed (N rated ) and the number of motor poles (PoleCount) as performance characteristics of the supported device.

[0076] Then, in step S110 , the installation status acquisition unit 301 generates installation purpose input screen information, and displays the installation purpose input screen 11 on the output unit 34 based on the installation purpose input screen information.

[0077] Figure 8 1 is a diagram showing an example of the installation purpose input screen 11. The installation purpose input screen 11 displays the installation purpose (Use) of the pump device 2 in a schematic diagram, for example, and includes an installation purpose input unit 110 capable of accepting input of the installation purpose (Use) by the user. Figure 8 In the specification, four uses of "suction", "pressing", "closed circuit" and "circulation" are cited as the use of the pump device 2, but other uses may also be included. Figure 8 2 shows a case where “pressing” is selected as the installation purpose (Use) of the pump device 2 in the selection box 110 a .

[0078] Then, in step S111 , the installation status acquisition unit 301 receives a user input of a setting purpose (Use) (here, “press”) through the setting purpose input screen 11 , thereby acquiring the setting purpose (Use) of the support target device.

[0079] Then, in step S112 , the installation status acquisition unit 301 generates actual lift input screen information according to the installation purpose (Use) of the support target device, and displays the actual lift input screen 12 on the output unit 34 based on the actual lift input screen information.

[0080] Fig. 9 1 is a diagram showing an example of the actual head input screen 12. The actual head input screen 12 includes, for example, a setting purpose display section 120 for displaying the setting purpose (Use) (here, "press") of the pump device 2, and a setting position display section 120 for receiving the actual head (H) input by the user. static ) is input into the actual lift input section 121. Fig. 9 In the figure, the actual head (H static ) and "2.5" was entered.

[0081] Then, in step S113, the installation status acquisition unit 301 receives the actual lift (H static ) is input by the user, thereby obtaining the actual head (H) of the support target device static ).

[0082] Then, in step S120 , the operating status acquisition unit 302 generates operating frequency input screen information, and displays the operating frequency input screen 13 on the output unit 34 based on the operating frequency input screen information.

[0083] Fig.10 1 is a diagram showing an example of the operating frequency input screen 13. The operating frequency input screen 13 includes, for example, a setting purpose display section 130 for displaying the setting purpose (Use) (here, "press") of the pump device 2, and an operating frequency (F out ) is inputted by the operating frequency input unit 131. Here, the following case is described: when the operating status acquisition unit 302 generates the operating frequency input screen information, it sends the operating frequency (F) to the supported device (the pump device 2 that is performing the test operation). out ) data transmission request, and obtain the operating frequency (F out ) (here, "150.0") is given as a reply, and the result is input as a preset value of the operating frequency input unit 131, which is displayed on the operating frequency input screen 13. In addition, the operating frequency input unit 131 may be capable of accepting input (change) of a numerical value.

[0084] Then, in step S121, the operating status acquisition unit 302 receives the operating frequency (F) through the operating frequency input screen 13. out ) (here, "150.0" received from the supported device) is input by the user, thereby obtaining the operating frequency (F) of the supported device. out ).

[0085] Then, in step S122 , the operating status acquisition unit 302 generates pressure input screen information, and displays the pressure input screen 14 on the output unit 34 based on the pressure input screen information.

[0086] Fig.11 1 is a diagram showing an example of the pressure input screen 14. The pressure input screen 14 includes, for example, a setting purpose display section 140 for displaying the setting purpose (Use) of the pump device 2 (here, "pressurization"), and a suction pressure (P suction ) and discharge pressure (P discharge ) is input into a pressure input section 141. Fig.11 The figure shows the suction pressure (P suction ) and discharge pressure (P discharge ) and input "0.026" and "0.064" respectively. Here, when the pump device 2 is actually operated after the trial run, the user inputs the results when visually reading the pressure value shown by the pressure gauge on the suction side and the pressure value shown by the pressure gauge on the discharge side.

[0087] Then, in step S123, the operating status acquisition unit 302 receives the suction pressure (P suction ) and discharge pressure (Pdischarge ) is input by the user, thereby obtaining the suction pressure (P suction ) and discharge pressure (P discharge ).

[0088] Then, in step S124 , the operating status acquisition unit 302 generates measurement point height difference input screen information, and displays the measurement point height difference input screen 15 on the output unit 34 based on the measurement point height difference input screen information.

[0089] Fig.12 1 is a diagram showing an example of the measurement point height difference input screen 15. The measurement point height difference input screen 15 includes, for example, a setting purpose display section 150 for displaying the setting purpose (Use) of the pump device 2 (here, "pressing"), and a measurement point height difference (H) input screen 150 for receiving the user's setting purpose (Use) of the pump device 2. diff ) is input into the measuring point height difference input unit 151. In addition, Fig.12 The figure shows the height difference (H diff ) were entered as “0.86”.

[0090] Then, in step S125, the operating status acquisition unit 302 receives the measuring point height difference (H) through the measuring point height difference input screen 15. diff ) is input by the user, thereby obtaining the height difference (H) of the measuring point of the support target device. diff In addition, the operating status acquisition unit 302 may also receive the height of the suction side measuring instrument (GH) through the measuring point height difference input screen 15. suction ) and the discharge side measuring instrument height (GH discharge ) is input by the user, and the height difference (H) of the measuring point is calculated by the following formula (1): diff ).

[0091] [Formula 1]

[0092] H diff =GH suction -GH discharge …(1)

[0093] Then, in step S200, the first operation support unit 303 performs the first operation support processing by performing the following steps based on the performance characteristics acquired in steps S100 to S101, the installation status acquired in steps S110 to S113, and the operation status acquired in steps S120 to S125. Fig.13 as well as Fig.14 The operation conditions during the reference operation are calculated by performing the steps shown in the figure. The following describes the details of the first operation support process.

[0094] Fig.13 as well as Fig.14This is a flowchart showing an example of the first operation support process (step S200 ) performed by the first operation support unit 303 .

[0095] First, in step S210, the first operation support unit 303 calculates the rotation speed based on the rated rotation speed (N rated ) and the number of motor poles (PoleCount), and the rated rotation speed (N rated ) Corresponding rated rotation frequency (F rated ).

[0096] [Formula 2]

[0097] F rated =N rated ·PoleCount / 120…(2)

[0098] Then, in step S211, based on the operating frequency (F out ) and the number of motor poles (PoleCount), and calculate the operating frequency (F) during the reference operation using the following formula (3): out ) Corresponding operating speed (N now ).

[0099] [Formula 3]

[0100] N now =120·F out / PoleCount…(3)

[0101] Then, in step S212, based on the operating rotation speed (N now ) and rated rotation speed (N rated ), the rotation speed ratio (N) during the reference operation is calculated by the following formula (4): ratio ).

[0102] [Formula 4]

[0103] N ratio =N now / N rated …(4)

[0104] Then, in step S220, based on the suction pressure (P suction ), discharge pressure (P discharge ) and the height difference of the measuring point (H diff ), calculate the total head (H) during the standard operation by the following formula (5): now ).

[0105] [Formula 5]

[0106] Hnow = k·(P suction -P discharge )+H diff …(5)

[0107] Here, k is a coefficient (≈102) for converting the unit of pressure [MPa] into the unit of head "m".

[0108] Then, in step S230, the flow rate and total head representative performance curve (QH typical (Q)), based on the operating speed during the reference operation (N now ) and rated rotation speed (N rated ) between the rotation speed ratio (N ratio ), calculate the flow rate and total head performance curve (QH now (Q)). For example, the flow rate and total head represented by the following formula (6) is used to represent the performance curve (QH typical (Q)) is converted into the following formula (7), and the coefficient (a hh , b hh 、c hh ), and the flow rate and total head performance curve (QH now (Q)).

[0109] [Formula 6]

[0110] QH typical (Q) = a ht Q 2 +b ht Q+c ht …(6)

[0111] [Formula 7]

[0112] QH now (Q) = a ht Q 2 ·N ratio +b ht Q+c ht ··N ratio 2

[0113] =a hh Q 2 +b hh Q+c hh …(7)

[0114] Then, in step S231, the flow rate and total head performance curve (QH now (Q)) by satisfying the total head (H now) point to determine the flow rate (Q now ).

[0115] Fig.15 It is the flow rate and total head performance curve (QH now (Q)), and the total head during standard operation (H now ) and the flow rate during standard operation (Q now ) calculation example. Flow rate and total head performance curve (QH now (Q)) In step S230, the flow rate and total head representative performance curve (QH typical In step S231, the flow rate and total head performance curve (QH now (Q)) is substituted into the total head (H) during the reference operation calculated in step S220. now ), and the flow rate (Q now ).

[0116] Then, in step S240, the relationship between the flow rate and the total head (described later) is Fig.16 Reference), make it according to the actual head (H static ) and determine the point (OP static ) and the flow rate during standard operation (Q now ) and total head (H now ) and the reference operating point (OP now ) through the system curve (CV sys (Q)). System curve (CV sys (Q)) is approximated as a quadratic curve by, for example, the following formula (8).

[0117] [Formula 8]

[0118] CV sys (Q) = a s Q 2 b s …(8)

[0119] Then, in step S241, based on the system curve (CV sys (Q)) and flow rate and total head representative performance curve (QH typical (Q)) to determine the flow rate (Q rated ) and total head (H rated ) and as the rated operating point (OP rated ).

[0120] Fig.16 Is the system curve (CV sys(Q)), and the flow rate during rated operation (Q rated ) and total head (H rated ) is a diagram of a calculation example of . In step S240, as the starting point (OP static ) and the reference operating point (OP now ) through the quadratic curve to create a system curve (CV sys (Q)). In addition, in step S241, as the system curve (CV sys (Q)) and flow rate and total head representative performance curve (QH typical The rated operating point (OP) is determined by the intersection of rated ).

[0121] Then, in step S242, the relationship between the flow rate and the total head (described later) is Fig.17 Reference), create a point (OP0) determined by a flow rate of 0 and a total head of 0, and a reference operating point (OP now ) through the hypothetical system curve (CV vsys (Q)).

[0122] Then, in step S243, based on the virtual system curve (CV vsys (Q)), and flow rate and total head representative performance curve (QH typical The intersection point between the actual head during the reference operation and the flow rate during the first hypothetical rated operation (Q rated0 ) and total head (H rated0 ) and as the first hypothetical rated operating point (OP rated0 ).

[0123] Then, in step S244, the flow rate and power consumption representative performance curve (QW typical (Q)) by satisfying the flow rate (Q rated ) point to determine the power consumption during rated operation (W rated ), and by satisfying the flow rate during the first hypothetical rated operation (Q rated0 ) point to determine the power consumption (W) during the first hypothetical rated operation rated0 ).

[0124] Then, in step S245, the power consumption during the first assumed rated operation (W rated0 ), based on the operating speed during the reference operation (N now ) and rated rotation speed (N rated ) between the rotation speed ratio (N ratio), the power consumption during the reference operation (W) is calculated by the following formula (9): now ).

[0125] [Formula 9]

[0126] W now =W rated0 ·(N ratio ) 3 …(9)

[0127] Then, in step S246, the power consumption during rated operation (W rated ) minus the power consumption during standard operation (W now ) is used to calculate the energy-saving power (ESW) during the standard operation. now ), and the energy-saving power (ESW) during the reference operation is calculated by the following formula (11): now ) relative to the power consumption during rated operation (W rated ) ratio, calculate the energy saving rate (ESR) during the standard operation now ).

[0128] [Formula 10]

[0129] ESW now =W rated -W now …(10)

[0130] [Formula 11]

[0131] ESR now =(ESW now / W rated )·100…(11)

[0132] Fig.17 is a graph showing the relationship between the flow rate and the total head during the reference operation and the relationship between the flow rate and the power consumption. now ) to create a hypothetical system curve (CV) during the reference operation by using the quadratic curve vsys (Q)). In step S243, the virtual system curve (CV vsys (Q)) and flow rate and total head representative performance curve (QH typical The first virtual rated operating point (OP rated0 In step S244, the flow rate and power consumption representative performance curve (QW typical (Q)) are substituted into the flow rate (Q rated ) and the flow rate during the first assumed rated operation (Q rated0), and the power consumption during rated operation (W rated ) and the power consumption during the first assumed rated operation (W rated0 In step S245, the power consumption during the first assumed rated operation (W rated0 ) and the rotation speed ratio (N ratio ) cubed to calculate the power consumption during the reference operation (W now ). In addition, Fig.17 The flow rate and power consumption performance curve (QW) during the reference operation is shown by the dotted line. now (Q)) is not calculated as a quadratic curve but is illustrated for reference.

[0133] Then, in step S250 , the first operation support unit 303 generates first operation support screen information that displays the calculation results of the operation conditions during the reference operation as a result of performing the first operation support processing as described above, and displays the first operation support screen 16 on the output unit 34 based on the first operation support screen information.

[0134] Fig.18 1 is a diagram showing an example of the first operation support screen 16. The first operation support screen 16 includes, for example, an input content display unit 160 for displaying input content input through each screen 10 to 15, a first calculation result display unit 161 for displaying the calculation result when the operation condition during the reference operation is calculated by the first operation support processing, and a second operation support screen 17 (described later) for inputting the flow rate for setting the support target device. Fig.21 as well as Fig.23 The first calculation result display unit 161 displays, as the operating conditions during the reference operation, the flow rate (Q now ), total head (H now ), Energy Saving Rate (ESR now ), operating speed (N now ). In addition, other data may be displayed on the first calculation result display unit 161 as long as it is data stored in the operation support internal data 322 through the first operation support processing.

[0135] As described above, according to the pump operation support device 3 and the pump operation support method of the present embodiment, by performing the first operation support process, the support target device having specific performance characteristics can calculate (estimate) the flow rate (Q) when operating according to the specific installation condition and operation condition. now ) and total head (H now ), so there is no need to use a flow meter for the supported device, and the operation support of the pump device 2 can be easily performed. In addition, the energy saving rate (ESR) at this time is calculated.now ), so it is possible to confirm the operation of the supported device at a specific operating frequency (F out )Energy saving effect during operation.

[0136] Then, return Figure 6 In step S300, the second operation support unit 304 displays the second operation support screen 17 (see below) in response to the flow rate setting button 162 of the first operation support screen 16 being pressed. Fig.21 as well as Fig.23 ), and accept the setting flow rate (Q set ) as the flow rate when the support target device is operating according to the setting condition, and as the second operation support processing, by performing the following Fig.19 as well as Fig. 20 The operation conditions for the set flow rate operation are calculated by following the steps shown. The details of the second operation support process are described below.

[0137] Fig.19 as well as Fig. 20 This is a flowchart showing an example of the second operation support process (step S300 ) performed by the second operation support unit 304 .

[0138] First, in step S310 , the second operation support unit 304 generates second operation support screen information in response to the flow rate setting button 162 of the first operation support screen 16 being pressed, and displays the second operation support screen 17 on the output unit 34 based on the second operation support screen information.

[0139] Fig.21 17 is a diagram showing an example of the second operation support screen 17. The second operation support screen 17 has a set flow rate input unit 170 that can input a set flow rate (Q set ) stepwise or continuous change input; operating condition calculation button 171, which can input the set flow rate (Q based on the set flow rate input unit 170) set ) and an instruction to execute the second operation support process for calculating the operating conditions for the set flow rate operation; a second calculation result display unit 172, which displays the calculation result when the operating conditions for the set flow rate operation are calculated by the second operation support process; and an instruction frequency setting button 173, which can input the instruction frequency (F) for the set flow rate operation. cmdset ) is set in a setting instruction of the supported device as an operating condition during operation at a set flow rate calculated by the second operation support processing.

[0140] The set flow rate input unit 170 inputs a set flow rate (Q) by sliding the indicator 170b along the arc 170a. set ). Fig.23 In the flow rate (Q now ) is changed to "1.010", and as shown in flow rate 170c, the diagram shows the case where "0.940" is input. In addition, Fig.21 In the example, since the second operation support process is before execution, the calculation result is not displayed in the second calculation result display unit 172, and the command frequency setting button 173 is displayed in a state that cannot be pressed (gray). In addition, the operation condition calculation button 171 may be omitted. In this case, the second operation support unit 304 may also be based on the set flow rate (Q) input by the set flow rate input unit 170. set ) and calculate the operating conditions when the flow rate is set.

[0141] Then, in step S311, the second operation support unit 304 receives the set flow rate (Q) set by the set flow rate input unit 170 in response to the pressing of the operation condition calculation button 171 on the second operation support screen 17. set ) (here "0.940").

[0142] Then, in step S320, based on the set flow rate (Q set ) relative to the flow rate during rated operation (Q rated ) and the ratio of the rated rotation speed (N rated ) Corresponding rated rotation frequency (F rated ), calculate the command frequency (F) during the set flow operation by the following formula (12): cmdset At this time, the second operation support unit 304 may also be configured to operate at a rated rotation frequency (F rated ) calculation, system curve (CV sys (Q)) production, rated flow rate (Q rated ), or may be determined by referring to the stored operation support internal data 322 as a calculation result based on the first operation support unit 303.

[0143] [Formula 12]

[0144] F cmdset =(Q set / Q rated )·F rated …(12)

[0145] Then, in step S321, based on the command frequency (F cmdset ) and the number of motor poles (PoleCount), the command frequency (F) during flow operation is calculated and set by the following formula (13): cmdset ) Corresponding operating speed (Nset ).

[0146] [Formula 13]

[0147] N set =120·F out / PoleCount…(13)

[0148] Then, in step S322, the rotation speed (N set ) and rated rotation speed (N rated ), the rotation speed ratio (N) during the set flow rate operation is calculated by the following formula (14): ratioset ).

[0149] [Formula 14]

[0150] N ratioset =N set / N rated …(14)

[0151] Then, in step S323, the system curve (CV sys (Q)) by satisfying the set flow rate (Q set ) point to determine the total head (H) when the set flow rate is running set ).

[0152] Then, in step S330, the relationship between the flow rate and the total head (see below) is Fig. 22 ), a point (OP0) determined by a flow rate of 0 and a total head of 0, and a point (Q set ) and the total head (H set ) and determine the set flow operating point (OP set ) is the hypothetical system curve (CV vsysset (Q)).

[0153] Then, in step S331, based on the virtual system curve (CV vsysset (Q)) and flow rate and total head representative performance curve (QH typical The intersection point between the two is determined as the flow rate (Q) of the second hypothetical rated operation, which corresponds to the rated operation under the hypothetical state in which the actual head during the set flow operation is set to 0. rated0set ) and total head (H rated0set ) and as the second hypothetical rated operating point (OP rated0set ).

[0154] Then, in step S332, the flow rate and power consumption representative performance curve (QW typical(Q)) by satisfying the flow rate (Q rated ) point to determine the power consumption during rated operation (W rated ), and by satisfying the flow rate during the second hypothetical rated operation (Q rated0set ) point to determine the power consumption (W) during the second hypothetical rated operation rated0set ).

[0155] Then, in step S333, the power consumption during the second assumed rated operation (W rated0set ), based on the operating speed (N) when the set flow rate is running set ) and rated rotation speed (N rated ) between the rotation speed ratio (N ratioset ), calculate the power consumption (W) during the set flow rate operation by the following formula (15): set ).

[0156] [Formula 15]

[0157] W set =W rated0set ·(N ratioset ) 3 …(15)

[0158] Then, in step S334, the power consumption (W rated ) minus the power consumption during operation with the set flow rate (W set ) and calculate the energy saving power (ESW) when the set flow rate is running set ), and the energy-saving power (ESW) during operation based on the set flow rate is calculated by the following formula (17): set ) relative to the power consumption during rated operation (W rated ) ratio, calculate the energy saving rate (ESR) when the set flow rate is running set ).

[0159] [Formula 16]

[0160] ESW set =W rated -W set …(16)

[0161] [Formula 17]

[0162] ESR set =(ESW set / W rated )·100…(17)

[0163] Fig. 22is a graph showing the relationship between the flow rate and the total head during the set flow rate operation, and the relationship between the flow rate and the power consumption. In step S330, as the slave point (OP0) and the set flow rate operation point (OP set ) is used to create a hypothetical system curve (CV vsysset (Q)). In step S331, a virtual system curve (CV vsysset (Q)) and flow rate and total head representative performance curve (QH typical The second virtual rated operating point (OP rated0set In step S332, the flow rate and power consumption representative performance curve (QW typical (Q)) are substituted into the flow rate (Q rated ) and the flow rate during the second assumed rated operation (Q rated0set ), and the power consumption during rated operation (W rated ) and the power consumption during the second assumed rated operation (W rated0set In step S333, the power consumption during the second assumed rated operation (W rated0set ) and the rotation speed ratio (N ratioset ) to calculate the power consumption (W) during the set flow rate operation set ). In addition, Fig. 22 The flow rate and power consumption performance curve (QW) during the set flow rate operation is shown by the dotted line set (Q)) is not calculated as a quadratic curve but is illustrated for reference.

[0164] Then, in step S340, the second operation support unit 304 generates second operation support screen information displaying the calculation result of the operation condition during the set flow rate operation as a result of performing the second operation support process as described above, and updates the second operation support screen 17 based on the second operation support screen information.

[0165] Fig.23 17a is a diagram showing an example of the updated second operation support screen 17a. The updated second operation support screen 17a has Fig.21 The second operation support screen 17 shown in FIG. 1 is similar in structure to the second calculation result display section 172a. As the operation conditions for the set flow rate operation, for example, the command frequency (F cmdset ), total head (H set ), Energy Saving Rate (ESR set ), operating speed (N set). In addition, other data may be displayed in the second calculation result display unit 172a as long as it is data stored in the operation support internal data 322 through the second operation support processing.

[0166] Then, in step S350, the second operation support unit 304 sends a command frequency (F) including the set flow rate operation to the support target device (here, the pump device 2 performing the test operation) in response to the command frequency setting button 173a of the second operation support screen 17a being pressed. cmdset ) frequency setting request, thereby the operating frequency (F out ) is set (changed) to the command frequency during the set flow rate operation (F cmdset )(here, "135.0"). As a result, the supported device is based on the operating frequency (F out ) controls the rotation of the motor 21. In addition, the command frequency setting button 173a is not pressed, for example, a new set flow rate (Q) is set by the set flow input unit 170. set ) and the operation condition calculation button 171 is pressed. In this case, the second operation support unit 304 only needs to perform the same processing after step S320 in step S311 as to accept the new set flow rate (Q set ) user input.

[0167] As described above, according to the pump operation support device 3 and the pump operation support method of the present embodiment, by performing the second operation support process, a set flow rate (Q) is calculated for causing the support target device having specific performance characteristics and installed in a specific installation condition to be set to the user's target. set ) Operation command frequency (F cmdset ), so there is no need to use a flow meter for the supported device, and the operation support of the pump device 2 can be easily performed. In addition, the energy saving rate (ESR) at this time is calculated. set ), so it is possible to confirm that the set flow rate (Q set )Energy saving effect during operation.

[0168] (Other embodiments)

[0169] The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention. All of these modifications are included in the technical concept of the present invention.

[0170] In the above embodiment, the pump operation support device 3 has a function of executing the pump operation support method, but a part of the function of the pump operation support device 3 (especially the function of the control unit 30) may be incorporated into the pump device 2 or the pump database device 4. In addition, the pump operation support device 3 may function as an independent device by storing necessary data (for example, the pump database 40) in the storage unit 32, or may function as a server type, cloud type, central monitoring center type, etc., and provide various screen information to a client type device that can accept various input operations.

[0171] In the above embodiment, the pump operation support device 3 is described as follows Figure 6 , Fig.13 , Fig.14 , Fig.19 as well as Fig. 20 The operation of the flowchart shown in the figure may be performed in the same manner as described above, but the execution order of each step may be appropriately changed, or some steps may be omitted. For example, the pump operation support device 3 may appropriately replace the order of steps S100 to S125 for displaying each screen 10 to 17, or may omit some steps in steps S100 to S125 for displaying each screen 10 to 17. In addition, the pump operation support device 3 may omit the second operation support process (step S300) and perform only the first operation support process (step S200), or may omit the first operation support process (step S200) and perform only the second operation support process (step S300).

[0172] In the above embodiment, the pump operation support device 3 displays the calculation results of the operating conditions during baseline operation and the calculation results of the operating conditions during set flow operation on the screen, but these calculation results can also be stored in an external storage device and storage medium, etc., or can be sent to any external device via the network 5.

[0173] In the above embodiment, the screens 10 to 17 displayed by the pump operation support device 3 when the pump operation support method is executed are described, but the display content, display mode, display layout, input method, etc. of each screen 10 to 17 may be appropriately changed. In addition, each screen 10 to 17 may be displayed as a plurality of screens, for example, the second operation support screen 17, 17a may be displayed as a second operation support screen 17 having a set flow input section 170 and an operation condition calculation button 171 and a second operation support screen 17a having a second calculation result display section 172 and a command frequency setting button 173 as independent screens.

[0174] Industrial Applicability

[0175] The present invention can be utilized in a pump operation support method and a pump operation support device.

[0176] Description of Reference Numerals

[0177] 1…Pump operation support system, 2…Pump device, 3…Pump operation support device,

[0178] 4...Pump database device, 5...Network,

[0179] 10…Model input screen, 11…Setting purpose input screen, 12…Actual head input screen,

[0180] 13…operating frequency input screen, 14…pressure input screen, 15…measuring point height difference input screen,

[0181] 16…1st operation support screen, 17, 17a…2nd operation support screen,

[0182] 20... pump unit, 21... motor, 22... pump control panel,

[0183] 30 ... control unit, 31 ... communication unit, 32 ... storage unit, 33 ... input unit, 34 ... output unit,

[0184] 40...Pump Database,

[0185] 100…Model input section, 110…Purpose input section,

[0186] 120…Setting purpose display part, 121…Actual head input part,

[0187] 130 ... setting purpose display part, 131 ... operation frequency input part,

[0188] 140 ... a setting purpose display portion, 141 ... a pressure input portion,

[0189] 150… Setting purpose display part, 151… Measurement point height difference input part,

[0190] 160 ... input content display portion, 161 ... first calculation result display portion, 162 ... flow rate setting button,

[0191] 170… flow rate setting input section, 171… operation condition calculation button,

[0192] 172, 172a ... a second calculation result display unit,

[0193] 173, 173a ... command frequency setting button (command frequency setting indication unit)

[0194] 300 ... performance characteristics acquisition unit, 301 ... installation status acquisition unit, 302 ... operation status acquisition unit,

[0195] 303…1st Operation Support Unit, 304…2nd Operation Support Unit,

[0196] 320…Pump operation support program, 321…Operation support acquisition data,

[0197] 322…operation support internal data.

Claims

1. A method for supporting pump operation, using a computer to support the operation of a pump device, wherein: The pump operation support method comprises the following steps: The performance characteristics acquisition process is to obtain the flow rate and total head representative performance curve (QH typical (Q)) and rated rotation speed (N rated ), as a performance characteristic of the supported device determined by the model (Mn) of the pump device; Set up a status acquisition process to obtain the actual lift (H static ), as a setting condition when setting the support target device; The operation status acquisition process acquires the operation frequency (F out ), suction pressure (P suction ) and discharge pressure (P discharge ), as the operating condition of the supported device when it operates according to the setting condition; and a first operation support step of performing a first operation support process, wherein the first operation support process is to calculate an operation condition when the support target device is operated according to the installation condition and the reference operation condition; The first operation support step calculates the flow rate (Q) during the reference operation based on the performance characteristics, the installation status, and the operation status. now ) and total head (H now ).

2. The pump operation support method according to claim 1, wherein: The operation status acquisition step further acquires the height difference (H diff ), as the operating condition, The first operation support step is based on the suction pressure (P suction ), the discharge pressure (P discharge ) and the height difference of the measuring point (H diff ), calculate the total head (H now ), From the flow rate and total head representative performance curve (QH typical (Q)), based on the operating frequency (F out ) Corresponding operating speed (N now ) and the rated rotation speed (N rated ) between the rotation speed ratio (N ratio ), calculate the flow rate and total head performance curve (QH now (Q)), On the flow rate and total head performance curve during the reference operation, by satisfying the total head (H now ) point to determine the flow rate (Q) during the reference operation now ).

3. The pump operation support method according to claim 1, wherein: The performance characteristic acquisition step further acquires a flow rate and power consumption representative performance curve (QW) during the rated operation. typical (Q)), as the performance characteristic, The first operation support step is: In the relationship between flow rate and total head, the actual head (H static ) and the flow rate (Q now ) and total head (H now ) The reference operating point determined by the system curve (CV sys (Q)), Based on the system curve (CV sys (Q)) and the flow rate and total head representative performance curve (QH typical The intersection point between the rated flow rate (Q rated ) and total head (H rated ) and used as the rated operating point, In the relationship between the flow rate and the total head, a hypothetical system curve (CV) during the reference operation is prepared, which passes through a point determined by the flow rate being 0 and the total head being 0 and the reference operation point. vsys (Q)), Based on the hypothetical system curve (CV vsys (Q)) and the flow rate and total head representative performance curve (QH typical The intersection point between the actual head during the reference operation and the flow rate during the first hypothetical rated operation (Q) is determined, which corresponds to the rated operation under the hypothetical state in which the actual head during the reference operation is set to 0. rated0 ) and total head (H rated0 ), On the flow rate and power consumption representative performance curve, according to the flow rate (Q rated ) point to determine the power consumption (W) during the rated operation rated ), and according to the flow rate (Q rated0 ) and determine the power consumption (W) during the first assumed rated operation rated0 ), From the power consumption (W) during the first assumed rated operation rated0 ), based on the operating frequency (F out ) Corresponding operating speed (N now ) and the rated rotation speed (N rated ) between the rotation speed ratio (N ratio ), calculate the power consumption (W) during the reference operation now ), By considering the power consumption during rated operation (W rated ) minus the power consumption during the reference operation (W now ) to calculate the energy-saving power during the reference operation, based on the energy-saving power during the reference operation relative to the power consumption during the rated operation (W rated ) ratio, and calculate the energy saving rate (ESR) during the reference operation.

4. The pump operation support method according to any one of claims 1 to 3, wherein: The performance characteristic acquisition step generates model input screen information for inputting the model (Mn), and acquires the performance characteristic based on the model (Mn) input into the model input screen based on the model input screen information. The installation status acquisition step generates installation status input screen information for inputting the installation status, and acquires the installation status via the installation status input screen based on the installation status input screen information. The operating status acquisition step generates operating status input screen information for inputting the operating status, and acquires the operating status via the operating status input screen based on the operating status input screen information. The first operation support step generates first operation support screen information that displays a calculation result of the operation condition during the reference operation calculated by the first operation support processing.

5. The pump operation support method according to claim 1, wherein: The system further comprises a second operation support step of performing a second operation support process, wherein the second operation support process is to receive a set flow rate (Q) as a flow rate when the support target device is operated according to the installation condition. set ) is input, the supported device is calculated according to the installation status and the set flow rate (Q set ) The set flow rate during operation and the operating conditions during operation, The second operation support step is: In the relationship between flow rate and total head, the actual head (H static ) and the flow rate (Q now ) and total head (H now ) The reference operating point determined by the system curve (CV sys (Q)), Based on the system curve (CV sys (Q)) and the flow rate and total head representative performance curve (QH typical The intersection point between the rated flow rate (Q rated ) and total head (H rated ), as the rated operating point, Based on the set flow rate (Q set ) relative to the rated flow rate (Q rated ) and the ratio of the rated rotation speed (N rated ) Corresponding rated rotation frequency (F rated ), calculate the command frequency (F cmdset ).

6. The pump operation support method according to claim 5, wherein: The performance characteristic acquisition step further acquires a flow rate and power consumption representative performance curve (QW) during the rated operation. typical (Q)), as the performance characteristic, The second operation support step is: On the system curve, according to satisfying the set flow rate (Q set ) point to determine the total head (H) when the set flow rate is running set ), In the relationship between the flow rate and the total head, a point determined by the flow rate being 0 and the total head being 0 and a point determined by the set flow rate (Q set ) and the total head (H set ) and the set flow rate operation point determined by the virtual system curve (CV vsysset (Q)), Based on the hypothetical system curve (CV vsysset (Q)) and the flow rate and total head representative performance curve (QH typical The intersection point between the two is determined as follows: the flow rate (Q) of the second hypothetical rated operation corresponding to the rated operation under the hypothetical state in which the actual head during the set flow rate operation is set to 0. rated0set ) and total head (H rated0set ), The power consumption during the rated operation (W) is determined based on the point on the flow rate / power consumption representative performance curve that satisfies the flow rate during the rated operation. rated ), and the power consumption (W) during the second hypothetical rated operation is determined based on the point that satisfies the flow rate during the second hypothetical rated operation. rated0set ), From the power consumption during the second assumed rated operation (W rated0set ), based on the command frequency (F cmdset ) Corresponding operating speed (N set ) and the rated rotation speed (N rated ) between the rotation speed ratio, calculate the power consumption (W) during the operation at the set flow rate set ), By considering the power consumption during rated operation (W rated ) minus the power consumption during the operation at the set flow rate (W set ) to calculate the energy-saving power during the set flow operation, and based on the ratio of the energy-saving power during the set flow operation to the power consumption during the rated operation, calculate the energy-saving rate (ESR) during the set flow operation set ).

7. The pump operation support method according to claim 5 or 6, wherein: The second operation support step generates second operation support screen information, the second operation support screen information having a set flow input unit capable of inputting the set flow rate (Q set ); a second calculation result display unit, which displays the set flow rate (Q set ) a calculation result of the operating condition during the set flow rate operation calculated by the second operation support processing; and a command frequency setting indicating unit, which can input a command frequency (F cmdset ) is set in a setting instruction of the support target device as an operating condition during the operation at the set flow rate calculated by the second operation support processing.

8. A pump operation support device, wherein: have: The performance characteristic acquisition unit acquires the flow rate and total head representative performance curve (QH typical (Q)) and rated rotation speed (N rated ), as the performance characteristics of the supported device determined according to the model (Mn) of the pump device; A status acquisition unit is provided to acquire the actual lift (H static ), as a setting condition when setting the support target device; The operation status acquisition unit acquires the operation frequency (F out ), suction pressure (P suction ) and discharge pressure (P discharge ), as the operating condition of the supported device when it operates according to the setting condition; and a first operation support unit for performing a first operation support process of calculating an operation condition when the support target device is operated according to the installation condition and a reference operation condition; The first operation support unit calculates the flow rate (Q) during the reference operation based on the performance characteristics, the installation status, and the operation status. now ) and total head (H now ).

Images