Pump operation support method and pump operation support device

Abstract

To provide a pump operation support method by which an operation of a pump device can be easily supported without using a flowmeter.SOLUTION: A pump operation support method comprises: a performance characteristic acquisition step for acquiring a flow rate / total lift-head performance curved line and a rated rotational speed as performance characteristics of a support objective device which is specified by a model number of a pump device; an installation situation acquisition step for acquiring an actual lift head as an installation situation of the support objective device; an operation situation acquisition step for acquiring an operation frequency, suction pressure and discharge pressure as operation situations of the support objective device; and a first operation support step for calculating an operation condition at a standard operation when the support objective device is operated in the installation situation and the operation situation. In the first operation support step, a flow rate and a total lift head at the standard operation are calculated on the basis of the performance characteristic, the installation situation and the operation situation.SELECTED DRAWING: Figure 6

Description

[Technical Field]

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

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

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-112440 Summary of the Invention [Problem to be solved by the invention]

[0004] To check the operating point of a pump device using the method disclosed in Patent Document 1, an expensive flow meter must be prepared in advance and installed at the installation site of the pump device. Therefore, a method for easily checking the operating point of a pump device at the installation site of the pump device is desired. In addition, a method for checking the operating point of a pump device not only at the installation site of the pump device but also from a remote management sensor located away from the installation site is desired. In addition, a method for checking the operating point of a pump device not only at the current situation, such as when the pump device was installed, but also when the pump device was operated in the past, for example, is desired.

[0005] In view of the above-mentioned problems, the present invention aims to provide a pump operation assistance method and a pump operation assistance device that enable easy operation assistance of a pump device without using a flow meter. [Means for solving the problem]

[0006] In order to achieve the above object, a pump operation assist method according to one aspect of the present invention includes: A pump operation assistance method for assisting operation of a pump device using a computer, comprising: As the performance characteristics of the support target equipment identified by the model number (Mn) of the pump equipment, the flow rate vs. total head representative performance curve (QH typical (Q)) and rated rotation speed (N rated ) a performance characteristic acquisition step of acquiring the performance characteristic; The actual head (H static ) an installation status acquisition process; The operating frequency (F out ), suction pressure (P suction ) and discharge pressure (P discharge ) a driving situation acquisition step of acquiring the driving situation; a first driving assistance step of performing a first driving assistance process of calculating an operating condition during a reference operation when the assistance target device is operated under the installation condition and the operating condition, The first driving assistance step includes: Based on the performance characteristics, the installation conditions, and the operating conditions, the flow rate (Q now ) and total head (H now ) is calculated. [Effects of the Invention]

[0007] According to the pump operation support method of the present invention, the first operation support step is based on the performance characteristics of the support target device acquired in the performance characteristic 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. , the flow rate (Q now ) and total head (H now ) is calculated. Therefore, operation support for the pump device can be easily performed without using a flow meter.

[0008] Problems, configurations, and effects other than those described above will become apparent from the detailed description of the invention that follows. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is an overall configuration diagram showing an example of a pump operation support system 1. FIG. [Figure 2] FIG. 2 is a block diagram showing an example of a pump operation support device 3. [Figure 3] 3 is a data configuration diagram showing an example of driving support acquired data 321 and a pump database 40. FIG. [Figure 4] FIG. 10 is a data configuration diagram showing an example of driving support internal data 322. [Figure 5] FIG. 9 is a hardware configuration diagram showing an example of a computer 900 that constitutes each device. [Figure 6] 4 is a flowchart showing an example of a pump operation support method performed by the pump operation support device 3. [Figure 7] FIG. 1 is a diagram showing an example of a model number input screen 10. [Figure 8] FIG. 10 is a diagram showing an example of an installation purpose input screen 11. [Figure 9] FIG. 10 is a diagram showing an example of an actual head input screen 12. [Figure 10] FIG. 2 is a diagram showing an example of an operation frequency input screen 13. [Figure 11] FIG. 10 is a diagram showing an example of a pressure input screen 14. [Figure 12] FIG. 10 is a diagram showing an example of a measurement point elevation difference input screen 15. [Figure 13] 10 is a flowchart showing an example of a first driving assistance process (step S200) performed by a first driving assistance unit 303. [Figure 14] 13 is a flowchart (continuation of FIG. 13) showing an example of the first driving assistance process (step S200) by the first driving assistance unit 303. [Figure 15] 1 is a graph showing a flow rate vs. total head performance curve (QHnow(Q)) during standard operation, and an example of calculating the total head (Hnow) during standard operation and the flow rate (Qnow) during standard operation. [Figure 16] 1 is a graph showing an example of calculation of a system curve (CVsys(Q)), a flow rate (Qrated) during rated operation, and a total head (Hrated). [Figure 17] 10 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. [Figure 18] FIG. 2 is a diagram showing an example of a first driving assistance screen 16. [Figure 19] 10 is a flowchart showing an example of a second driving assistance process (step S300) performed by a second driving assistance unit 304. [Figure 20] 20 is a flowchart (continuation of FIG. 19) showing an example of the second driving assistance process (step S300) by the second driving assistance unit 304. [Figure 21] FIG. 10 is a diagram showing an example of a second driving assistance screen 17. [Figure 22] 10 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 the power consumption. [Figure 23] FIG. 10 is a diagram showing an example of a second driving assistance screen 17a after updating. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment for carrying out the present invention will be described with reference to the drawings. The scope necessary for the explanation to achieve the object of the present invention will be schematically shown, and the scope necessary for explaining the relevant parts of the present invention will be mainly explained, and the parts that are omitted from the explanation will be based on publicly known techniques.

[0011] (Embodiment) 1 is an overall configuration diagram showing an example of a pump operation support system 1. When a pump device 2 serving as a support target device is installed, the pump operation support system 1 functions as a system that supports a user of the pump device 2 (such as an owner, manager, installer, inspector, or repair worker of the pump device 2) in setting the operating conditions of the pump device 2.

[0012] Specifically, the pump operation support system 1 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 that manages data relating to the performance characteristics of the pump device 2. Each of the devices 2 to 4 is configured, for example, by a general-purpose or dedicated computer (see FIG. 5 described later), and is configured to be able to transmit and receive various data to and from each other via a network 5. Note that there may be more than one of the devices 2 to 4, and the configuration of the network 5 is not limited to the example shown in FIG. 1.

[0013] The pump device 2 is a rotary machine that transfers liquids such as water (tap water, sewage, fresh water, seawater, industrial water, etc.), chemical liquids, petroleum (crude oil, refined oil), etc. The pump device 2 is used, for example, in water supply facilities such as tap water and sewage systems, and in plant facilities such as oil refineries, power generation, manufacturing, and chemical processes, but is not limited to these examples and may be used in systems that use any liquid. Note that in this embodiment, the description will focus on a case where the pump device 2 that functions as a water supply device that transfers water is applied as the support target device.

[0014] The pump device 2 includes a pump section 20, a motor 21 that serves as a drive source for the pump device 2, and a pump control panel 22 that controls the operation of the pump device 2. The pump section 20 is composed of, for example, an impeller, a rotating shaft, bearings, a mechanical seal, a gland packing, a casing, and piping. The pump control panel 22 is composed of, for example, an inverter, a power supply circuit, a communication circuit, and an operation display unit. The pump control panel 22 controls the rotational operation of the motor 21 based on, for example, a command frequency set as an operating condition and detection values of sensors (not shown) provided in various parts, and controls communication operations when transmitting and receiving various information between the pump operation support device 3 and the pump database device 4. The motor 21 may be composed of a motor unit that incorporates at least one of an inverter and a power supply circuit.

[0015] There are multiple types of pump devices 2 with different performance characteristics, and the performance characteristics are identified by a model number. Examples of the performance characteristics include, but are not limited to, a representative performance curve of flow rate vs. total head during rated operation, a representative performance curve of flow rate vs. power consumption, a rated rotation speed, and the number of motor poles. The model number may be expressed, for example, as a string of alphanumeric characters, and may identify not only the performance characteristics of the pump device 2 but also various specifications of the pump device 2 (structure, material, bore, etc.).

[0016] The pump operation support device 3 is configured, for example, as a stationary computer or a portable computer, and is used by a user of the pump device 2. Programs such as applications and browsers are installed in the pump operation support device 3, and the pump operation support device 3 accepts various input operations and outputs various information (screen information, etc.) via a display screen or voice. In this embodiment, the pump operation support device 3 will be described mainly as being configured as a smartphone, as an example of a portable computer, as shown in FIG. 1.

[0017] The pump database device 4 is configured, for example, by a server-type computer or a cloud-type computer. The pump database device 4 has a pump database 40 (see FIG. 3 described later) in which performance characteristic data indicating the performance characteristics of each pump device 2 can be registered for each model number of the pump device 2. When the pump database device 4 receives a data transmission request including the model number of the pump device 2 from the pump operation support device 3, it reads out the performance characteristic data corresponding to the model number from the pump database 40 and transmits it to the pump operation support device 3 that sent the data transmission request.

[0018] Network 5 is configured using wired or wireless communication, or a combination of wired and wireless communication, according to any communication standard. Specifically, for example, a standardized communication network such as the Internet, a communication network managed within a building such as a local network, or a combination of these communication networks can be used. Furthermore, international standards are typically used as communication standards for wireless communication. Examples of international standard communication methods include IEEE802.15.4, IEEE802.15.1, IEEE802.15.11a, 11b, 11g, 11n, 11ac, 11ad, ISO / IEC14513-3-10, and IEEE802.15.4g. Other possible communication methods include Bluetooth (registered trademark), Bluetooth Low Energy, Wi-Fi, ZigBee (registered trademark), Sub-GHz, EnOcean (registered trademark), and LTE.

[0019] 2 is a block diagram showing an example of the pump operation support device 3. The pump operation support device 3 includes, as its main components, a control unit 30, a communication unit 31, a storage unit 32, an input unit 33, and an output unit 34.

[0020] The control unit 30 executes, for example, a pump operation assistance program 320 stored in the storage unit 32, thereby functioning as a performance characteristic acquisition unit 300, an installation status acquisition unit 301, an operation status acquisition unit 302, a first operation assistance unit 303, and a second operation assistance unit 304. That is, each of the units 300 to 304 of the control unit 30 functions as a main body that executes each step (performance characteristic acquisition step, installation status acquisition step, operation status acquisition step, first operation assistance step, and second operation assistance step) in the pump operation assistance method.

[0021] The communication unit 31 is connected to the network 5 and functions as a communication interface for transmitting and receiving various types of data to and from, for example, the pump device 2 or the pump database device 4. The storage unit 32 stores various programs (such as an operating system and a pump operation assistance program 320) and data (such as driving assistance acquisition data 321 and driving assistance internal data 322) used in the operation of the pump operation assistance device 3. The input unit 33 accepts various input operations, and the output unit 34 functions as a user interface by outputting various types of information via a display screen or voice.

[0022] 3 is a data configuration diagram showing an example of the driving support acquired data 321 and the pump database 40. FIG. 4 is a data configuration diagram showing an example of the driving support internal data 322.

[0023] The pump database 40 stores the performance characteristics of each pump device 2 (in the example of FIG. 3, a flow rate vs. total head representative performance curve (QH typical (Q)), flow rate / power consumption representative performance curve (QW typical (Q)), rated rotation speed (N rated The pump database 40 is updated as needed by adding, modifying, deleting, etc., model numbers and performance characteristics based on information provided by, for example, the manufacturer of the pump device 2.

[0024] The operation assistance acquisition data 321 stores performance characteristic data acquired by the performance characteristic acquisition unit 300, installation condition data acquired by the installation condition acquisition unit 301, and operation condition data acquired by the operation condition acquisition unit 302 when the pump operation assistance device 3 is operating. The operation assistance internal data 322 stores data on the processing results (intermediate calculation results, final calculation results, etc.) when the first operation assistance unit 303 and the second operation assistance unit 304 perform operation assistance processing when the pump operation assistance device 3 is operating. Note that methods for acquiring and calculating the various data stored in the operation assistance acquisition data 321 and the operation assistance internal data 322 will be described later.

[0025] The performance characteristic acquisition unit 300 acquires at least a representative performance curve of flow rate vs. total head (QH typical (Q)) and rated rotation speed (N rated ) and also obtain the typical performance curve of flow rate and power consumption during rated operation (QW typical The performance characteristic acquisition unit 300 may acquire the motor pole number (PoleCount) and the motor speed (Speed) (Q) and the motor pole number (PoleCount). For example, the performance characteristic acquisition unit 300 generates model number input screen information that allows the input of a model number (Mn), and acquires the performance characteristics based on the model number (Mn) input on a model number input screen (see FIG. 7 described later) based on the model number input screen information. Specifically, the performance characteristic acquisition unit 300 may transmit a data transmission request including the model number (Mn) to the pump database device 4, and acquire the performance characteristics of the support target device from the pump database device 4 in response. Furthermore, if the pump database 40 is stored in the storage unit 32, the performance characteristics of the support target device may be acquired by referencing the pump database 40 based on the model number. Note that if performance characteristic data of the support target device is stored in the pump control panel 22 of the support target device, the performance characteristic acquisition unit 300 may transmit a performance characteristic data transmission request to the pump device 2, which is the support target device, and acquire the performance characteristics of the support target device from the pump device 2 in response. In this case, the user input of the model number may be omitted.

[0026] The installation status acquisition unit 301 acquires at least the actual head (H static) and may further acquire the installation purpose (Use). For example, the installation status acquisition unit 301 generates installation status input screen information that allows the installation status of the pump device 2 as the support target device to be input, and acquires the installation status of the support target device by accepting user input via an installation status input screen (see FIGS. 8 and 9 described later) based on the installation status input screen information. Note that, if the installation status data of the support target device is stored in the pump control panel 22 of the support target device itself, the installation status acquisition unit 301 may transmit an installation status data transmission request to the pump device 2 as the support target device, and acquire the installation status of the support target device from the pump device 2 in response to the request. Also, if the installation status data of the support target device is stored in the storage unit 32 or an external storage device or storage medium, the installation status acquisition unit 301 may acquire the installation status of the support target device by referring to the data.

[0027] The operating condition acquisition unit 302 acquires at least the operating frequency (F out ), suction pressure (P suction ) and discharge pressure (P discharge ) and then the measurement point elevation difference (H diff ) may be acquired. For example, the operating status acquisition unit 302 generates operating status input screen information that allows input of the operating status of the pump device 2 as the support target device, and acquires the operating status of the support target device by accepting user input via an operating status input screen (see FIGS. 10 to 12 described later) based on the operating status input screen information. Note that, if the operating status data of the support target device is stored in the pump control panel 22 of the support target device itself, the operating status acquisition unit 302 may transmit an operating status data transmission request to the pump device 2 as the support target device, and acquire the operating status of the support target device from the pump device 2 in response to the request. Also, if the operating status data of the support target device is stored in the storage unit 32 or an external storage device or storage medium, the operating status acquisition unit 302 may acquire the operating status of the support target device by referring to the data.

[0028] The first operation support unit 303 performs a first operation support process to calculate the operating conditions during standard operation when the support target device is operated under the installation and operating conditions. At that time, the first operation support unit 303 calculates the operating conditions during standard operation based on the performance characteristics, the installation conditions, and the operating conditions, and stores the calculation results of various data as operation support internal data 322. The operating conditions during standard operation include, for example, the flow rate (Q now ), total head (H now ) and energy saving rate (ESR now ) The reference operating time corresponds to the time when the support target device was operated under the installation and operating conditions, but may be the present time or a past time. The reference operating time may also be, for example, the time when a test run was performed upon installation, inspection, repair, etc. of the pump device 2, or the time when normal operation was performed.

[0029] Furthermore, the first driving support unit 303 functions as a user interface for the first driving support process. For example, the first driving support unit 303 generates first driving support screen information that displays the calculation results of the operating conditions during reference flow rate operation calculated by the first driving support process, and displays a first driving support screen (see FIG. 18 described later) based on the first driving support screen information.

[0030] The second operation support unit 304 sets a set flow rate (Q set ) input is received, a second operation support process is performed to calculate the operating conditions for the set flow rate operation when the support target device is operating at the installation status and set flow rate, and the calculation results of various data are stored as operation support internal data 322. The operating conditions for the set flow rate operation include, for example, the command frequency (F cmdset ), total head during set flow rate operation (H set ) and energy saving rate (ESR set ) etc.

[0031] The second driving support unit 304 also functions as a user interface for the second driving support process. For example, the second driving support unit 304 may input a set flow rate (Qset ) can be input into the set flow rate input section, and the set flow rate (Q set a second calculation result display unit that displays the calculation results of the operating conditions during the set flow rate operation calculated by the second operation support process based on the calculated operating conditions during the set flow rate operation, and a command frequency (F cmdset The second driving assistance screen information is generated, and the second driving assistance screen information has a command frequency setting instruction unit that can input a setting instruction to set the command frequency setting instruction to the assistance target device, and a second driving assistance screen (see Figures 21 and 23 described below) based on the second driving assistance screen information is displayed.

[0032] FIG. 5 is a hardware configuration diagram showing an example of a computer 900 that constitutes each device.

[0033] Each of the pump device 2, the pump operation assistance device 3, and the pump database device 4 is configured by a general-purpose or dedicated computer 900. As shown in Fig. 3, 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 / output) device I / F unit 926, and a media input / output unit 928. Note that the above components may be omitted as appropriate depending on the application of the computer 900.

[0034] The processor 912 is composed of one or more arithmetic processing devices (such as a central processing unit (CPU), a micro-processing unit (MPU), a digital signal processor (DSP), or a graphics processing unit (GPU)), and operates as a control unit that controls the entire computer 900. The memory 914 stores various data and programs 930, and is composed of, for example, a volatile memory (such as a DRAM or SRAM) that functions as a main memory, a non-volatile memory (ROM), a flash memory, etc.

[0035] 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 sound (audio) 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 may be integrated into one device, such as 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 executing the operating system and the program 930.

[0036] The communication I / F unit 922 is connected to a network 940 (which may be the same as network 5 in FIG. 1 ) such as the Internet or an intranet via a wired or wireless connection, and functions as a communication unit that transmits and receives data to and from other computers in accordance with a predetermined communication protocol. The external device I / F unit 924 is connected to an external device 950 (such as a camera, printer, scanner, or reader / writer) via a wired or wireless connection, and functions as a communication unit that transmits and receives data to and from the external device 950 in accordance with a predetermined communication protocol. The I / O device I / F unit 926 is connected to an I / O device 960 (such as various sensors and actuators), and functions as a communication unit that transmits and receives various signals and data, such as detection signals from sensors and control signals to actuators, to and from the I / O device 960. The media input / output unit 928 is composed of a drive device (such as a DVD (Digital Versatile Disc) drive or a CD (Compact Disc) drive), a memory card slot, and a USB connector, and reads and writes data from and to media (non-transitory storage media) 970 (such as a DVD, CD, memory card, or USB memory).

[0037] In the computer 900 having the above configuration, the processor 912 loads a program 930 stored in the storage device 920 into the memory 914, executes the program, and controls each unit of the computer 900 via the bus 910. The program 930 may be stored in the memory 914 instead of the storage device 920. The program 930 may be recorded on the medium 970 in an installable file format or an executable file format and provided to the computer 900 via the media input / output unit 928. The program 930 may be provided to the computer 900 by being downloaded via the communication I / F unit 922 over the network 940. Furthermore, the computer 900 may implement various functions realized by the processor 912 executing the program 930 using hardware such as an FPGA (field-programmable gate array) or an ASIC (application specific integrated circuit).

[0038] The computer 900 is an electronic device of any type, such as a desktop computer or a portable computer, and may be a client computer, a server computer, or a cloud computer.

[0039] (Pump operation support method) 6 is a flowchart showing an example of a pump operation support method by the pump operation support device 3. The following describes a case where an installer (user) of a pump device 2, which is a support target device, starts a pump operation support program 320 (smartphone application) installed on a smartphone functioning as the pump operation support device 3 in order to check and set the operating conditions of the pump device 2 when the installer (user) performs a test run of the pump device 2 after installation.

[0040] First, in step S100, the performance characteristic acquisition unit 300 generates model number input screen information in response to the start of the pump operation support program 320, and displays the model number input screen 10 on the output unit 34 based on the model number input screen information.

[0041] FIG. 7 is a diagram showing an example of a model number input screen 10. The model number input screen 10 displays, for example, the model numbers (Mn) of the pump device 2 in a list format and has a model number input section 100 that can accept input of the model number (Mn) by the user. The list of model numbers (Mn) displayed on the model number input section 100 may be provided by, for example, the pump database device 4 or may be stored in the storage section 32. The model number input section 100 may also be capable of accepting input of a character string. In FIG. 7, "P001-AAA-03" is selected as the model number (Mn) of the pump device 2. The case where the selection is made by a selection box 100a is shown.

[0042] Then, in step S101, when the performance characteristic acquisition unit 300 receives a user input of the model number (Mn) of the support target device (here, "P001-AAA-03") on the model number input screen 10, it transmits a data transmission request including the model number (Mn) to the pump database device 4, and in response, acquires the performance characteristics of the support target device identified by the model number (Mn). Here, the performance characteristic acquisition unit 300 acquires a representative performance curve of flow rate vs. total head during rated operation (QH typical (Q)), flow rate / power consumption representative performance curve (QW typical (Q)), rated rotation speed (N rated ) and the number of motor poles (PoleCount).

[0043] Next, 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.

[0044] Fig. 8 is a diagram showing an example of the installation use input screen 11. The installation use input screen 11 has an installation use input unit 110 that displays, for example, the installation use of the pump device 2 in a schematic diagram and can accept input of the installation use by the user. In Fig. 8, four installation uses of the pump device 2 are shown as examples: "suction," "push," "closed circuit," and "circulation," but installation uses other than these may also be included. Fig. 8 shows a case where "push" is selected in a selection frame 110a as the installation use of the pump device 2.

[0045] Then, in step S111, the installation status acquisition unit 301 receives a user input of the installation use (Use) (here, "push") on the installation use input screen 11, thereby acquiring the installation use (Use) of the support target device.

[0046] Next, in step S112, the installation status acquisition unit 301 generates actual head input screen information according to the installation use (Use) of the support target device, and displays the actual head input screen 12 on the output unit 34 based on the actual head input screen information.

[0047] 9 is a diagram showing an example of the actual head input screen 12. The actual head input screen 12 includes, for example, an installation use display section 120 that displays the installation use (Use) of the pump device 2 (here, "push"), and an actual head (H static 9, the actual head input unit 121 can receive the input of the actual head (H static ) is shown as "2.5".

[0048] Then, in step S113, the installation status acquisition unit 301 inputs the actual head (H static ) user input, the actual head (H static ) to get the

[0049] Next, in step S120, the operating condition 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.

[0050] 10 is a diagram showing an example of the operation frequency input screen 13. The operation frequency input screen 13 includes, for example, an installation use display section 130 that displays the installation use (Use) of the pump device 2 (here, "push"), and an operation frequency (F out ) when generating the operation frequency input screen information. out ) data transmission request to the support target device (test run In response, the operating frequency (F out ) (here, "150.0") is acquired, and the result is input as a default value of the operation frequency input unit 131, and displayed on the operation frequency input screen 13. Note that the operation frequency input unit 131 may be capable of accepting input (change) of a numerical value.

[0051] Then, in step S121, the operating condition acquisition unit 302 inputs the operating frequency (F out ) (here, "150.0" received from the support target device) is received, the operating frequency (F out ) to get the

[0052] Next, in step S122, the driving condition 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.

[0053] 11 is a diagram showing an example of the pressure input screen 14. The pressure input screen 14 includes, for example, an installation use display section 140 that displays the installation use (Use) of the pump device 2 (here, "push"), and a suction pressure (P suction ) and discharge pressure (P discharge11, the suction pressure (P suction ) and discharge pressure (P discharge ) are input as "0.026" and "0.064," respectively. Here, the results of the user visually reading the pressure values indicated by the suction-side pressure gauge and the discharge-side pressure gauge when the pump device 2 is actually operating during a test run are input.

[0054] Then, in step S123, the operating condition acquisition unit 302 inputs the suction pressure (P suction ) and discharge pressure (P discharge ) input by the user, the suction pressure (P suction ) and discharge pressure (P discharge ) to get the

[0055] Next, in step S124, the driving condition acquisition unit 302 generates measurement point elevation difference input screen information, and displays the measurement point elevation difference input screen 15 on the output unit 34 based on the measurement point elevation difference input screen information.

[0056] 12 is a diagram showing an example of the measurement point elevation difference input screen 15. The measurement point elevation difference input screen 15 includes, for example, an installation use display section 150 that displays the installation use (Use) of the pump device 2 (here, "push-in"), and a measurement point elevation difference (H diff ) can be input. diff ) and "0.86" are entered.

[0057] Then, in step S125, the driving status acquisition unit 302 inputs the measurement point elevation difference (H diff ) user input, the measurement point elevation difference (H diff The operation status acquisition unit 302 acquires the suction side instrument height (GH suction ) and discharge side meter height (GH discharge) user input, the measurement point elevation difference (H diff ) may be calculated.

[0058] [Number 1] H diff =GH suction -GH discharge …(1)

[0059] Next, in step S200, the first driving assistance unit 303 performs a first driving assistance process based on the performance characteristics acquired in steps S100 to S101, the installation status acquired in steps S110 to S113, and the driving status acquired in steps S120 to S125. Based on this, the driving conditions during the reference driving are calculated by performing the steps shown in Fig. 13 and Fig. 14. The first driving support process will be described in detail below.

[0060] 13 and 14 are flowcharts showing an example of the first driving assistance process (step S200) by the first driving assistance unit 303.

[0061] First, in step S210, the first driving support unit 303 calculates the rated rotation speed (N rated ) and the number of motor poles (PoleCount), the rated rotation speed (N rated ) according to the rated operating frequency (F rated ) is calculated.

[0062] [Number 2] F rated =N rated ·PoleCount / 120 …(2)

[0063] Next, in step S211, the operating frequency during the reference operation (F out ) and the number of motor poles (PoleCount), the operating frequency (F out ) according to the operating rotation speed (N now ) is calculated.

[0064] [Number 3] N now =120°F out / PoleCount …(3)

[0065] Next, in step S212, the operating rotation speed (N now ) and rated rotation speed (N rated ) based on the following equation (4), the rotation speed ratio (N ratio ) is calculated.

[0066] [Number 4] N ratio =N now / N rated …(4)

[0067] Next, in step S220, the suction pressure (P suction ), discharge pressure (P discharge ) and measurement point height difference (H diff ) based on the total head (H now ) is calculated.

[0068] [Number 5] H now =k·(P suction -P discharge )+H diff …(5) Here, k is a coefficient (≒102) used to convert the unit of pressure [MPa] to the unit of head "m".

[0069] Next, in step S230, the flow rate vs. total head representative performance curve (QH typical (Q)) to calculate the operating rotation speed during standard operation (N now ) and rated rotation speed (N rated ) and rotational speed ratio (N ratio ) based on the flow rate vs. total head performance curve (QH now For example, the flow rate vs. total head representative performance curve (QH typical (Q)) is converted into the following equation (7), and the coefficient (a hh , b hh , c hh) is calculated to obtain the flow rate vs. total head performance curve (QH now (Q) is calculated.

[0070] [Number 6] QH typical (Q)=a ht Q 2 +b ht Q+c ht …(6) [Number 7] QH now (Q)=a ht Q 2 N ratio +b ht Q+c ht· N ratio 2 =a hh Q 2 +b hh Q+c hh …(7)

[0071] Then, in step S231, the flow rate vs. total head performance curve (QH now (Q)) and the total head (H now ) is satisfied, the flow rate during standard operation (Q now ) to identify the

[0072] Figure 15 shows the flow rate vs. 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 graph showing an example of calculation of the flow rate vs. total head performance curve (QH now (Q)) is calculated in step S230 by the flow rate vs. total head representative performance curve (QH typical (Q)) during standard operation. now ) is calculated in step S231 by the flow rate vs. total head performance curve (QH now (Q)) is the total head (H now ) is used to identify the

[0073] Next, in step S240, in the relationship between the flow rate and the total head (see FIG. 16 described later), the actual head (H static ) static ) and the flow rate during standard operation (Q now ) and total head (H now ) is specified by the reference operating point (OP now ) and the system curve (CV sys (Q)) Create a system curve (CV sys (Q) is approximated as a quadratic curve by the following equation (8), for example.

[0074] [Number 8] CV sys (Q)=a s Q 2 ·b s …(8)

[0075] Next, in step S241, the system curve (CV sys (Q)) and flow rate / total head representative performance curve (QH typical Based on the intersection with the flow rate (Q rated ) and total head (H rated ) at the rated operating point (OP rated ) to identify it.

[0076] Figure 16 shows the system curve (CV sys (Q)) and the flow rate at rated operation (Q rated ) and total head (H rated ) is a graph showing an example of calculation of the system curve (CV sys (Q)) is set to the point (OP static ) and reference operating point (OP now ) and is created as a quadratic curve passing through the rated operating point (OP rated ) is calculated as the system curve (CV sys (Q)) and flow rate / total head representative performance curve (QH typical (Q)).

[0077] Next, in step S242, in the relationship between the flow rate and the total head (see FIG. 17 described later), the point (OP0) specified by the flow rate being 0 and the total head being 0 and the reference operating point (OP now ) and the virtual system curve (CV) vsys Create (Q).

[0078] Next, in step S243, a virtual system curve (CV vsys (Q)) and flow rate / total head representative performance curve (QH typical Based on the intersection with the flow rate (Q rated0 ) and total head (H rated0 ) to the first virtual rated operating point (OP rated0 ) to identify it.

[0079] Next, in step S244, the flow rate vs. power consumption representative performance curve (QW typical (Q)) at rated operation rated ) is satisfied, the power consumption during rated operation (W rated ) and the flow rate (Q rated0 ) is satisfied, the power consumption (W rated0 ) to identify the

[0080] Next, in step S245, the power consumption (W rated0 )mosquito Then, the operating rotation speed during standard operation (N now ) and rated rotation speed (N rated ) and rotational speed ratio (N ratio ) based on the following equation (9), the power consumption during standard operation (W now ) is calculated.

[0081] [Number 9] W now =W rated0 ·(N ratio ) 3 …(9)

[0082] Next, in step S246, the power consumption during rated operation (W rated ) to the power consumption during standard operation (W now ) is subtracted to calculate the energy-saving power (ESW) during standard operation. now ) and calculate the power consumption during rated operation (W rated ) during standard operation (ESW) now ) based on the ratio of the energy saving rate (ESR) during standard operation now ) is calculated.

[0083] [Number 10] ESW now =W rated -W now …(10) [Number 11] ESR now =(ESW now / W rated )·100 …(11)

[0084] FIG. 17 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. vsys (Q)) is the point (OP0) and the reference operating point (OP now ) and the first virtual rated operating point (OP rated0 ) is calculated by the virtual system curve (CV vsys (Q)) and flow rate / total head representative performance curve (QH typical (Q)) and the power consumption at rated operation (W rated ) and power consumption during the first hypothetical rated operation (W rated0 ) is calculated in step S244 by the flow rate vs. power consumption representative performance curve (QW typical (Q)) to the flow rate at rated operation (Q rated ) and the first hypothetical rated operation flow rate (Q rated0 ) can be determined by substituting the values for the standard operation. now ) is calculated in step S245 as the power consumption (W rated0 ) and rotational speed ratio (Nratio ) and the cube of the flow rate vs. power consumption performance curve (QW now (Q)) is not calculated as a quadratic curve, but is shown for reference.

[0085] Then, in step S250, the first driving assistance unit 303 generates first driving assistance screen information that displays the calculation results of the driving conditions during standard driving as a result of performing the first driving assistance processing as described above, and displays the first driving assistance screen 16 on the output unit 34 based on the first driving assistance screen information.

[0086] FIG. 18 is a diagram showing an example of the first driving assistance screen 16. The first driving assistance screen 16 has, for example, an input content display section 160 that displays the input content entered on each screen 10 to 15, a first calculation result display section 161 that displays the calculation results when the operating conditions during reference operation are calculated by the first driving assistance process, and a flow rate setting button 162 that can be used to input a display instruction for the second driving assistance screen 17 (see FIGS. 21 and 23 described later) for setting the flow rate of the assistance target device. The first calculation result display section 161 displays, for example, a flow rate (Q now ), total head (H now ), energy saving rate (ESR now ), operating rotation speed (N now ) is displayed. Note that the first calculation result display unit 161 may be configured to display other data as long as it is data that has been stored in the driving assistance internal data 322 by the first driving assistance process.

[0087] As described above, the pump operation support device 3 and the pump operation support method according to this embodiment For example, by performing the first operation assistance process, the flow rate (Q now ) and total head (H now ) can be calculated (estimated), so that operation support for the pump device 2 can be easily performed without using a flow meter for the support target device.now ) is calculated, so that the specific operating frequency (F out ) and the energy-saving effect when operating at this speed can be confirmed.

[0088] Next, returning to FIG. 6, in step S300, the second driving assistance unit 304 displays the second driving assistance screen 17 (see FIGS. 21 and 23 described later) in response to pressing of the flow rate setting button 162 on the first driving assistance screen 16, and displays a set flow rate (Q set ) is input, and the operating conditions for set flow rate operation are calculated by performing the steps shown in Fig. 19 and Fig. 20 as second operating support processing. The second operating support processing will be described in detail below.

[0089] 19 and 20 are flowcharts showing an example of the second driving assistance process (step S300) by the second driving assistance unit 304.

[0090] First, in step S310, the second driving assistance unit 304 generates second driving assistance screen information in response to pressing of the flow rate setting button 162 on the first driving assistance screen 16, and displays the second driving assistance screen 17 on the output unit 34 based on the second driving assistance screen information.

[0091] FIG. 21 is a diagram showing an example of the second driving support screen 17. The second driving support screen 17 displays a set flow rate (Q set ) can be changed stepwise or continuously and input, and the set flow rate (Q set ), a second calculation result display unit 172 that displays the calculation results when the operating conditions for the set flow rate operation are calculated by the second operation support process, and a command frequency (F cmdset) to the support target device.

[0092] The set flow rate input section 170 allows the user to input a set flow rate (Q set ) is input. In Figure 23, the flow rate (Q now 21, the second operation support process has not yet been executed, so the second calculation result display unit 172 does not display the calculation results, and the command frequency setting button 173 is displayed in a state where it cannot be pressed (grayed out). Also, the operation condition calculation button 171 may be omitted, and in that case, the second operation support unit 304 inputs the set flow rate (Q set ) is input, the operating conditions for the set flow rate operation may be calculated.

[0093] Then, in step S311, the second driving support unit 304 calculates the set flow rate (Q set ) (here, "0.940") is accepted as user input.

[0094] Next, in step S320, the flow rate (Q rated ) to the set flow rate (Q set ) ratio and the rated rotation speed (N rated ) according to the rated operating frequency (F rated ) and the command frequency (F cmdset At this time, the second driving support unit 304 calculates the same as the first driving support unit 303. Similarly, the rated operating frequency (F rated ) calculation, system curve (CV sys (Q)) and the flow rate at rated operation (Q rated) may be specified, or the driving support internal data 322 stored as a calculation result by the first driving support unit 303 may be referenced.

[0095] [Number 12] F cmdset =(Q set / Q rated )·F rated …(12)

[0096] Next, in step S321, the command frequency (F cmdset ) and the number of motor poles (PoleCount), the command frequency (F cmdset ) according to the operating rotation speed (N set ) is calculated.

[0097] [Number 13] N set =120°F out / PoleCount …(13)

[0098] Next, in step S322, the operating rotation speed (N set ) and rated rotation speed (N rated ) based on the following equation (14), the rotation speed ratio (N ratioset ) is calculated.

[0099] [Number 14] N ratioset =N set / N rated …(14)

[0100] Next, in step S323, the system curve (CV sys (Q) set ) is satisfied, the total head (H set ) to identify the

[0101] Next, in step S330, in the relationship between the flow rate and the total head (see FIG. 22 described later), the point (OP0) where the flow rate is 0 and the total head is 0 and the set flow rate (Qset ) and total head during set flow rate operation (H set ) is specified by the set flow rate operating point (OP set ) and the virtual system curve (CV) when operating at a set flow rate. vsysset Create (Q).

[0102] Next, in step S331, a virtual system curve (CV vsysset (Q)) and flow rate / total head representative performance curve (QH typical Based on the intersection with the flow rate (Q (Q)), the flow rate (Q rated0set ) and total head (H rated0set ) to the second virtual rated operating point (OP rated0set ) to identify it.

[0103] Next, in step S332, the flow rate vs. power consumption representative performance curve (QW typical (Q)) at rated operation rated ) is satisfied, the power consumption during rated operation (W rated ) and the second hypothetical rated operation flow rate (Q rated0set ) is satisfied, the power consumption (W rated0set ) to identify the

[0104] Next, in step S333, the power consumption (W rated0set ) to calculate the operating rotation speed (N set ) and rated rotation speed (N rated ) and rotational speed ratio (N ratioset ) based on the following equation (15), the power consumption during set flow rate operation (W set ) is calculated.

[0105] [Number 15] W set =W rated0set ·(N ratioset ) 3 …(15)

[0106] Next, in step S334, the power consumption during rated operation (W rated ) to the power consumption (W) during set flow rate operation set ) to reduce energy consumption during set flow rate operation (ESW set ) and calculate the power consumption during rated operation (W rated Energy-saving power consumption (ESW) during set flow rate operation set ) based on the ratio of the energy saving rate (ESR) during set flow rate operation set ) is calculated.

[0107] [Number 16] ESW set =W rated -W set …(16) [Number 17] ESR set =(ESW set / W rated )·100 …(17)

[0108] FIG. 22 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 the power consumption. vsysset (Q)) is the point (OP0) and the set flow rate operating point (OP set ) and the second virtual rated operating point (OP rated0set ) is calculated in step S331 by calculating the virtual system curve (CV vsysset (Q)) and flow rate / total head representative performance curve (QH typical (Q)) and the power consumption at rated operation (W rated ) and the second hypothetical rated power consumption (W rated0set ) is calculated in step S332 by the flow rate vs. power consumption representative performance curve (QW typical (Q)) to the flow rate at rated operation (Q rated ) and the second hypothetical rated operation flow rate (Q rated0set ) can be determined by substituting the values for the power consumption during set flow rate operation (W set ) is calculated as the power consumption (Wrated0set ) and rotational speed ratio (N ratioset ) and the cube of the power consumption curve (QW set (Q)) is not calculated as a quadratic curve, but is shown for reference.

[0109] Then, in step S340, the second driving assistance unit 304 generates second driving assistance screen information that displays the calculation results of the operating conditions during set flow rate operation as a result of performing the second driving assistance processing as described above, and updates the second driving assistance screen 17 based on the second driving assistance screen information.

[0110] 23 is a diagram showing an example of the second driving support screen 17a after updating. The second driving support screen 17a after updating has the same configuration as the second driving support screen 17 shown in FIG. 21, and the second calculation result display section 172a displays, for example, a command frequency (F cmdset ), total head (H set ), energy saving rate (ESR set ), operating rotation speed (N set ) is displayed. Note that the second calculation result display unit 172a may be configured to display other data as long as it is data that has been stored in the driving assistance internal data 322 by the second driving assistance process.

[0111] Then, in step S350, the second driving support unit 304 sets the command frequency (F cmdset ) to the support target device (here, the pump device 2 that has undergone a test run), the operating frequency (F out ) is the command frequency (F cmdset ) (here, "135.0") is set (changed). As a result, the support target device out) to control the rotational operation of the motor 21. It should be noted that, for example, a new set flow rate (Q set ) is set and the operation condition calculation button 171 is pressed, the second operation support unit 304 calculates the new set flow rate (Q set ) user input is accepted, The processing from step S320 onward may be carried out in the same manner.

[0112] As described above, according to the pump operation assistance device 3 and the pump operation assistance method of this embodiment, by performing the second operation assistance process, the assistance target device that has specific performance characteristics and is installed in a specific installation situation can achieve the user's target set flow rate (Q set ) to operate at the command frequency (F cmdset ) is calculated, the operation support of the pump device 2 can be easily performed without using a flow meter for the support target device. set ) is calculated, so that the set flow rate (Q set ) and the energy-saving effect when operating at this speed can be confirmed.

[0113] (Other embodiments) The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention, all of which are included in the technical concept of the present invention.

[0114] In the above embodiment, the pump operation support device 3 has the function of executing the pump operation support method, but some of the functions of the pump operation support device 3 (particularly the functions of the control unit 30) may be incorporated into the pump device 2 or the pump database device 4. Furthermore, the pump operation support device 3 may function as a stand-alone 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 device, or the like, and may provide various types of screen information to a client-type device that can accept various input operations.

[0115] In the above embodiment, the pump operation support device 3 operates according to the flowcharts shown in Figures 6, 13, 14, 19, and 20. However, the order in which the steps are executed may be changed as appropriate, or some steps may be omitted. For example, the pump operation support device 3 may change the order of steps S100 to S125 for displaying screens 10 to 17 as appropriate, or some steps among steps S100 to S125 for displaying screens 10 to 17 may be omitted. Furthermore, 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).

[0116] In the above embodiment, the pump operation support device 3 displays the calculation results of the operating conditions during standard operation and the calculation results of the operating conditions during set flow rate operation on a screen. However, these calculation results may be stored in an external storage device or storage medium, or may be transmitted to any external device via the network 5.

[0117] In the above embodiment, the screens 10 to 17 are displayed when the pump operation assistance device 3 executes the pump operation assistance method, but the display content, display form, display layout, input method, etc. of the screens 10 to 17 may be changed as appropriate. Furthermore, the screens 10 to 17 may be displayed as multiple screens. For example, the second operation assistance screens 17, 17a may be displayed as separate screens, with the second operation assistance screen 17 having a set flow rate input section 170 and an operating condition calculation button 171 and the second operation assistance screen 17a having a second calculation result display section 172 and a command frequency setting button 173. [Explanation of symbols]

[0118] 1... Pump operation support system, 2... Pump device, 3... Pump operation support device, 4...Pump database device, 5...Network, 10...Model number input screen, 11...Installation purpose input screen, 12...Actual head input screen, 13...Operating frequency input screen, 14...Pressure input screen, 15...Measurement point elevation difference input screen, 16...first driving assistance screen, 17, 17a...second driving assistance screen, 20... pump section, 21... motor, 22... pump control panel, 30...control unit, 31...communication unit, 32...storage unit, 33...input unit, 34...output unit, 40... Pump database, 100...Model number input section, 110...Installation purpose input section, 120...Installation use display unit, 121...Actual head input unit, 130...Installation purpose display unit, 131...Operation frequency input unit, 140...Installation use display unit, 141...Pressure input unit, 150...Installation purpose display section, 151...Measuring point height difference input section, 160...input content display section, 161...first calculation result display section, 162...flow rate setting button, 170...set flow rate input section, 171...operating condition calculation button, 172, 172a...second calculation result display unit, 173, 173a...Command frequency setting button (command frequency setting indicator) 300... performance characteristic acquisition unit, 301... installation status acquisition unit, 302... operation status acquisition unit, 303...first driving support unit, 304...second driving support unit, 320... Pump operation support program, 321... Operation support acquisition data, 322...Driver assistance internal data

Claims

1. A pump operation assistance method for assisting operation of a pump device using a computer, comprising: As the performance characteristics of the support target equipment identified by the model number (Mn) of the pump equipment, the flow rate and total head representative performance curve (QH ｔｙｐｉｃａｌ (Q)) and rated rotation speed (N ｒａｔｅｄ a performance characteristic acquisition step of acquiring the performance characteristic; The actual head (H ｓｔａｔｉｃ an installation status acquisition process for acquiring the information; The operating frequency (F ｏｕｔ ), suction pressure (P ｓｕｃｔｉｏｎ ) and discharge pressure (P ｄｉｓｃｈａｒｇｅ a driving status acquisition step of acquiring the driving status; a first driving assistance process for performing a first driving assistance process for calculating an operating condition during a reference operation when the assistance target device is operated under the installation condition and the operating condition; a second operation support process for performing a second operation support process that, when receiving an input of a set flow rate (Q set ) as a flow rate when the support target device is operating in the installation situation, calculates an operation condition for a set flow rate operation when the support target device is operating in the installation situation and at the set flow rate (Q set ); The first driving assistance step includes: Based on the performance characteristics, the installation status, and the operating status, the flow rate (Q ｎｏｗ ) and total head (H ｎｏｗ ) is calculated, The second driving assistance step includes: In the relationship between the flow rate and the total head, a system curve (CV sys (Q)) is created that passes through a point specified by the actual head (H static ) and a reference operating point specified by the flow rate (Q now ) and the total head (H now ) during the reference operation; Based on the intersection of the system curve (CV sys (Q)) and the flow rate / total head typical performance curve (QH typical (Q)), the flow rate (Q rated ) and total head (H rated ) during the rated operation are identified as rated operation points; calculating a command frequency (F cmdset ) during operation at the set flow rate based on a ratio of the set flow rate (Q set ) to the flow rate (Q rated ) during rated operation and a rated operation frequency (F rated ) corresponding to the rated rotation speed (N rated ); Pump operation support method.

2. The driving status acquisition step includes: As the operating conditions, the measurement point elevation difference (H ｄｉｆｆ ) and get more The first driving assistance step includes: The suction pressure (P ｓｕｃｔｉｏｎ ), the discharge pressure (P ｄｉｓｃｈａｒｇｅ ) and measurement point height difference (H ｄｉｆｆ ) based on the total head (H ｎｏｗ ) is calculated, The above flow rate / total head representative performance curve (QH ｔｙｐｉｃａｌ (Q)), the operating frequency (F ｏｕｔ ) according to the operating rotation speed (N ｎｏｗ ) and the rated rotation speed (N ｒａｔｅｄ ) and the rotational speed ratio (N ｒａｔｉｏ ) based on the flow rate and total head performance curve (QH ｎｏｗ (Q)) is calculated, On the flow rate / total head performance curve during the standard operation, the total head (H ｎｏｗ ) is satisfied, the flow rate (Q ｎｏｗ ) to identify The pump operation support method according to claim 1 .

3. The performance characteristic acquisition step includes: As the performance characteristics, the flow rate and power consumption representative performance curve (QW ｔｙｐｉｃａｌ (Q)) is further obtained, The first driving assistance step includes: In the relationship between the flow rate and the total head, the actual head (H ｓｔａｔｉｃ ) and the flow rate (Q ｎｏｗ ) and total head (H ｎｏｗ ) and the reference operating point specified by ｓｙｓ (Q)) is created, The system curve (CV ｓｙｓ (Q)) and the flow rate / total head representative performance curve (QH ｔｙｐｉｃａｌ Based on the intersection with the flow rate (Q ｒａｔｅｄ ) and total head (H ｒａｔｅｄ ) is identified as the rated operating point, In the relationship between the flow rate and the total head, a virtual system curve (CV) during the reference operation that passes through the point where the flow rate is 0 and the total head is 0 and the reference operating point. ｖｓｙｓ (Q)) is created, The virtual system curve (CV) ｖｓｙｓ (Q)) and the flow rate / total head representative performance curve (QH ｔｙｐｉｃａｌ Based on the intersection with the flow rate (Q (Q)) during the first virtual rated operation, which corresponds to the rated operation in a virtual state in which the actual head during the reference operation is set to 0, ｒａｔｅｄ０ ) and total head (H ｒａｔｅｄ０ ) and On the flow rate / power consumption representative performance curve, the flow rate (Q ｒａｔｅｄ ) is satisfied, the power consumption during rated operation (W ｒａｔｅｄ ) and the flow rate (Q ｒａｔｅｄ０ ) is satisfied, the power consumption (W ｒａｔｅｄ０ ) and The power consumption during the first virtual rated operation (W ｒａｔｅｄ０ ) from the operating frequency (F ｏｕｔ ) according to the operating rotation speed (N ｎｏｗ ) and the rated rotation speed (N ｒａｔｅｄ ) and the rotational speed ratio (N ｒａｔｉｏ ) based on the power consumption (W ｎｏｗ ) is calculated, Power consumption during rated operation (W ｒａｔｅｄ ) to the power consumption during the standard operation (W ｎｏｗ ) is subtracted to calculate the energy-saving power during the standard operation, and the power consumption during the rated operation (W ｒａｔｅｄ Calculating an energy saving rate (ESR) during the standard operation based on the ratio of energy saving power during the standard operation to the energy saving power during the standard operation. The pump operation support method according to claim 1 .

4. The performance characteristic acquisition step includes: generating model number input screen information on which the model number (Mn) can be input, and acquiring the performance characteristics based on the model number (Mn) input on the model number input screen based on the model number input screen information; The installation status acquisition step includes: generating installation status input screen information on which the installation status can be input, and acquiring the installation status via an installation status input screen based on the installation status input screen information; The driving status acquisition step includes: generating driving situation input screen information that allows the driving situation to be input, and acquiring the driving situation via a driving situation input screen based on the driving situation input screen information; The first driving assistance step includes: generating first driving assistance screen information that displays the calculation results of the driving conditions during the reference driving calculated by the first driving assistance processing; The pump operation support method according to any one of claims 1 to 3.

5. The performance characteristic acquisition step includes: As the performance characteristics, the flow rate and power consumption representative performance curve (QW ｔｙｐｉｃａｌ (Q)) is further obtained, The second driving assistance step includes: On the system curve, the set flow rate (Q ｓｅｔ ) is satisfied, the total head (H ｓｅｔ ) and In the relationship between the flow rate and the total head, the point where the flow rate is 0 and the total head is 0, and the set flow rate (Q ｓｅｔ ) and the total head (H ｓｅｔ ) and a virtual system curve (CV) during the set flow rate operation passing through the set flow rate operating point specified by ｖｓｙｓｓｅｔ (Q)) is created, The virtual system curve (CV) during the set flow rate operation ｖｓｙｓｓｅｔ (Q)) and the flow rate / total head representative performance curve (QH ｔｙｐｉｃａｌ Based on the intersection with the flow rate (Q (Q)) at the time of the second virtual rated operation, which corresponds to the time of the rated operation in a virtual state in which the actual head at the time of the set flow rate operation is set to 0, ｒａｔｅｄ０ｓｅｔ ) and total head (H ｒａｔｅｄ０ｓｅｔ ) and On the flow rate / power consumption representative performance curve, the power consumption (W ｒａｔｅｄ ) is specified, and the power consumption (W) during the second virtual rated operation is determined by satisfying the flow rate during the second virtual rated operation. ｒａｔｅｄ０ｓｅｔ ) and The power consumption during the second virtual rated operation (W ｒａｔｅｄ０ｓｅｔ ) to obtain the command frequency (F ｃｍｄｓｅｔ ) according to the operating rotation speed (N ｓｅｔ ) and the rated rotation speed (N ｒａｔｅｄ ) and the power consumption (W ｓｅｔ ) is calculated, Power consumption during rated operation (W ｒａｔｅｄ ) to the power consumption (W ｓｅｔ ) to calculate the energy saving power during the set flow rate operation, and based on the ratio of the energy saving power during the set flow rate operation to the power consumption during the rated operation, calculate the energy saving rate (ESR ｓｅｔ ) to calculate The pump operation support method according to claim 1 .

6. The second driving assistance step includes: The set flow rate (Q ｓｅｔ a set flow rate input unit capable of inputting the set flow rate (Q ｓｅｔ a second calculation result display unit that displays a calculation result of the operating conditions during the set flow rate operation calculated by the second driving support processing based on a command frequency (F ｃｍｄｓｅｔ and a command frequency setting instruction unit capable of inputting a setting instruction to set the command frequency to the assistance target device. The pump operation support method according to claim 1 or 5.

7. The performance characteristics of the support target equipment identified by the pump equipment model number (Mn) are shown in the flow rate and total head representative performance curve (QH ｔｙｐｉｃａｌ (Q)) and rated rotation speed (N ｒａｔｅｄ a performance characteristic acquisition unit that acquires the performance characteristic; The actual head (H ｓｔａｔｉｃ an installation status acquisition unit that acquires the installation status; The operating frequency (F ｏｕｔ ), suction pressure (P ｓｕｃｔｉｏｎ ) and discharge pressure (P ｄｉｓｃｈａｒｇｅ a driving situation acquisition unit that acquires the driving situation information; a first driving assistance unit that performs a first driving assistance process to calculate an operating condition during a reference operation when the assistance target device is operated under the installation condition and the operating condition; a second operation support unit that performs a second operation support process that, when receiving an input of a set flow rate (Q set ) as a flow rate when the support target device is operating in the installation situation, calculates an operation condition for a set flow rate operation when the support target device is operating in the installation situation and at the set flow rate (Q set ); The first driving assistance unit Based on the performance characteristics, the installation status, and the operating status, the flow rate (Q ｎｏｗ ) and total head (H ｎｏｗ ) is calculated, The second driving assistance unit In the relationship between the flow rate and the total head, a system curve (CV sys (Q)) is created that passes through a point specified by the actual head (H static ) and a reference operating point specified by the flow rate (Q now ) and the total head (H now ) during the reference operation; Based on the intersection of the system curve (CV sys (Q)) and the flow rate / total head typical performance curve (QH typical (Q)), the flow rate (Q rated ) and total head (H rated ) during the rated operation are identified as rated operation points; calculating a command frequency (F cmdset ) during operation at the set flow rate based on a ratio of the set flow rate (Q set ) to the flow rate (Q rated ) during rated operation and a rated operation frequency (F rated ) corresponding to the rated rotation speed (N rated ); Pump operation support device.

Images