Pump abnormal operation detection methods, intelligent terminals and storage media

Abstract

This invention discloses a method for detecting abnormal pump operation, a smart terminal, and a storage medium. The method includes acquiring real-time current values; determining whether the pump unit is in operation based on the real-time current values; when the pump unit is determined to be in operation, acquiring real-time monitoring data of the pump; determining whether the pump outlet check valve is closed based on the real-time monitoring data; and when the pump outlet check valve is determined to be closed, identifying abnormal pump operation and issuing an early warning. The solution provided by this invention can promptly detect whether the pump has a risk of overheating, and when such a risk is detected, an early warning is issued.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pump state monitoring, and particularly relates to a pump abnormal operation detection method, an intelligent terminal and a storage medium. BACKGROUND

[0002] At present, with the development of science and technology, the state parameters of a pump can be monitored, analyzed and diagnosed, so that equipment abnormalities can be found in time and accurately, and equipment managers can be informed in time through an alarm / alarming mode, so that the occurrence of accidents of key equipment such as a pump can be prevented, energy consumption of equipment operation can be reduced, and carbon emissions can be reduced. At present, a common risk of a pump is a 'burning pot' risk, that is, the pump runs in a state in which an outlet valve of the pump is closed. If the pump runs in this state for a long time, there is a risk of burning. SUMMARY

[0003] To solve the technical problem that the pump runs in a state in which an outlet valve of the pump is closed, embodiments of the present application provide a pump abnormal operation detection method, an intelligent terminal and a storage medium.

[0004] The technical scheme of the embodiments of the present application is implemented as follows:

[0005] The embodiments of the present application provide a pump abnormal operation detection method, and the method comprises the following steps.

[0006] Obtaining a real-time current value, and determining whether a pump unit is in a running state according to the real-time current value;

[0007] When it is determined that the pump unit is in the running state, obtaining real-time monitoring data of the pump;

[0008] Determining whether a pump outlet check valve is in a closed state according to the real-time monitoring data of the pump;

[0009] When it is determined that the pump outlet check valve is in the closed state, determining that the pump is abnormally running, and performing early warning.

[0010] In the above scheme, the determination of whether the pump unit is in the running state according to the real-time current value comprises the following steps.

[0011] When the real-time current value is greater than 0, it is determined that the pump unit is in the running state;

[0012] When the real-time current value is equal to 0, it is determined that the pump unit is in a non-running state.

[0013] In the above scheme, the determination of whether the pump outlet check valve is in the closed state according to the real-time monitoring data of the pump comprises the following steps.

[0014] Obtaining a liquid level value in the real-time monitoring data, and calculating a pump inlet pressure value according to the liquid level value;

[0015] acquiring an outlet pressure value in the real-time monitoring data;

[0016] calculating a real-time pump head according to the inlet pressure value and the outlet pressure value;

[0017] calculating a head at a rated rotating speed according to the real-time head;

[0018] inquiring a pump characteristic curve according to the head at the rated rotating speed to acquire a flow rate, an efficiency and a shaft power at the rated rotating speed;

[0019] converting the flow rate, the efficiency and the shaft power at the rated rotating speed into flow rate, efficiency and shaft power at a real-time rotating speed;

[0020] judging whether the pump outlet check valve is in a closed state by using the flow rate, the efficiency and the shaft power at the real-time rotating speed.

[0021] In the above scheme, the calculation of the pump inlet pressure value according to the liquid level value comprises:

[0022] The pump inlet pressure value is calculated according to the liquid level value by using the following formula (1):

[0023]

[0024] wherein, PrIn represents the pump inlet pressure value, H1 represents the liquid level, ρ represents the medium density, and g represents the gravitational acceleration.

[0025] In the above scheme, the calculation of the real-time pump head according to the inlet pressure value and the outlet pressure value comprises:

[0026] The real-time pump head is calculated according to the inlet pressure value and the outlet pressure value by using the following formula (2):

[0027]

[0028] wherein, Ht represents the real-time head, PrIn represents the pump inlet pressure value, ρ represents the medium density, g represents the gravitational acceleration, P2 represents the outlet pressure, Z2 represents the height difference between the center of the pump and the center of the outlet precision pressure gauge, Z1 represents the height difference between the center of the pump and the center of the inlet precision pressure gauge, V2 represents the average flow rate of the water flow at the outlet pressure taking position, V1 represents the average flow rate of the water flow at the inlet pressure taking position, and h represents the pipe resistance loss between the inlet pressure taking position and the outlet pressure taking position.

[0029] In the above scheme, the calculation of the head at the rated rotating speed according to the real-time head comprises:

[0030] The head at the rated rotating speed is calculated according to the real-time head by using the following formula (3):

[0031]

[0032] Wherein, Hn represents the head at rated speed, Ht represents the real-time head, n represents the real-time speed, and N represents the rated speed.

[0033] In the scheme, the conversion of the flow, efficiency and shaft power at the rated speed into the flow, efficiency and shaft power at the real-time speed comprises:

[0034] The conversion of the flow, efficiency and shaft power at the rated speed into the flow, efficiency and shaft power at the real-time speed is performed by using the following formula (4):

[0035]

[0036]

[0037] E t =En

[0038] Wherein, n represents the real-time speed, N represents the rated speed, Qn represents the flow at the rated speed, En represents the efficiency at the rated speed, Pn represents the shaft power at the rated speed, Qt represents the flow at the real-time speed, Et represents the efficiency at the real-time speed, and Pt represents the shaft power at the real-time speed.

[0039] In the scheme, the determination of whether the pump outlet check valve is in the closed state by using the flow, efficiency and shaft power at the real-time speed comprises:

[0040] The determination of whether the pump check valve is in the closed state is performed according to whether the value of the shaft power at the real-time speed divided by the motor efficiency is greater than the motor power.

[0041] When the value of the shaft power at the real-time speed divided by the motor efficiency is greater than the motor power, the pump outlet check valve is in the closed state.

[0042] When the value of the shaft power at the real-time speed divided by the motor efficiency is less than the motor power, the pump outlet check valve is in the open state.

[0043] The embodiment of the application further provides an intelligent terminal, comprising: a processor and a memory for storing a computer program capable of running on the processor; wherein,

[0044] The processor is used to run the computer program, and execute the steps of any of the methods.

[0045] The embodiment of the application further provides a storage medium, and the storage medium stores a computer program. When the computer program is executed by a processor, the steps of any of the methods are implemented.

[0046] The pump abnormal operation detection method, the pump and the storage medium provided by the embodiment of the present application, obtain a real-time current value, judge whether the pump unit is in an operation state according to the real-time current value, obtain real-time monitoring data of the pump when judging that the pump unit is in the operation state, judge whether a pump outlet check valve is in a closed state according to the real-time monitoring data of the pump, determine that the pump is in abnormal operation and give a warning when judging that the pump outlet check valve is in the closed state. The scheme provided by the present application can detect whether the pump has a risk of "boiling" in time, and give a warning in time when detecting that the pump has the risk of "boiling". BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 A flowchart of the pump abnormal operation detection method of the embodiment of the present application is shown in the figure.

[0048] Figure 2 A structural diagram of the pump abnormal operation detection device of the embodiment of the present application is shown in the figure.

[0049] Figure 3 An internal structure diagram of the computer device of the embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0050] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0051] The embodiment of the present application provides a pump abnormal operation detection method, as shown in the figure, the method comprises the following steps. Figure 1

[0052] Step 101: obtaining a real-time current value, judging whether the pump unit is in an operation state according to the real-time current value.

[0053] Step 102: obtaining real-time monitoring data of the pump when judging that the pump unit is in the operation state.

[0054] Step 103: judging whether a pump outlet check valve is in a closed state according to the real-time monitoring data of the pump.

[0055] Step 104: determining that the pump is in abnormal operation and giving a warning when judging that the pump outlet check valve is in the closed state.

[0056] The embodiment can monitor the health state parameters (such as vibration, temperature, etc.), the process state parameters (such as flow, pressure, water level, etc.) and the energy efficiency state parameters (such as efficiency, power, current, voltage, power factor, etc.) of the pump in real time. Specifically, the embodiment monitors the process parameters (such as flow, pressure, water level, etc.) of the water pump, the health state parameters (such as unit vibration, bearing temperature, etc.) of the pump and the energy efficiency state parameters (such as power, running efficiency, current, voltage, power factor, etc.).

[0057] ​In actual application, the data can be acquired in a synchronous sampling mode. For example, the pump start-stop state, real-time rotating speed, real-time frequency, etc. are synchronized through real-time OPC communication OPC-DA2.0 protocol; the pump outlet pressure value is synchronized through VT6000 real-time network communication (TCP-RS485); and the pump current power is synchronized through real-time network communication (TCP-RS485) of an electric energy meter.

[0058] In the embodiment, the process flow, pressure, rotating speed, current, frequency, etc. of the pump set are collected, and whether the pump set is in a running state is determined according to the collected data. If the pump set is in a running state, whether the pump is in a "boiling state" (the pump is running in a state that the outlet valve of the pump is closed, which cannot be run for a long time (generally less than 5 minutes in some cases), and if the pump is run for a long time, the pump has a hidden danger of burning) is determined. The acquired data and the determination result are uploaded to a cloud platform for display and alarm.

[0059] In an embodiment, the determining whether the pump set is in a running state according to the real-time current value comprises:

[0060] When the real-time current value is greater than 0, it is determined that the pump set is in a running state.

[0061] When the real-time current value is equal to 0, it is determined that the pump set is in a non-running state.

[0062] In actual application, whether the pump set is in a running state can be determined according to the current value. If the current value is not 0, the pump set is in a running state. If the current value is 0, the pump set is in a non-running state.

[0063] In an embodiment, the determining whether the pump outlet check valve is in a closed state according to the real-time monitoring data of the pump comprises:

[0064] acquiring a liquid level value in the real-time monitoring data, and calculating a pump inlet pressure value according to the liquid level value;

[0065] calculating a real-time head of the pump according to the inlet pressure value;

[0066] calculating a head under a rated rotating speed according to the real-time head;

[0067] querying a pump characteristic curve according to the head under the rated rotating speed to acquire a flow rate, an efficiency and a shaft power under the rated rotating speed;

[0068] converting the flow rate, the efficiency and the shaft power under the rated rotating speed into a flow rate, an efficiency and a shaft power under a real-time rotating speed;

[0069] determining whether the pump check valve is in a closed state by using the flow rate, the efficiency and the shaft power under the real-time rotating speed.

[0070] Here, since the flow rate cannot be measured in real time on site, the embodiment uses the pump real-time flow rate data obtained by inversely searching the pump characteristic curve according to the pressure, and judges whether the pump is in the "boiling state" according to the electric parameters.

[0071] In an embodiment, the calculating the pump inlet pressure value according to the liquid level value comprises:

[0072] The pump inlet pressure value is calculated according to the liquid level value by using the following formula (1):

[0073]

[0074] Wherein, PrIn represents the pump inlet pressure value, H1 represents the liquid level, p represents the medium density, and g represents the gravity acceleration.

[0075] In an embodiment, the calculating the pump real-time head according to the inlet pressure value comprises:

[0076] The pump real-time head is calculated according to the inlet pressure value by using the following formula (2):

[0077]

[0078] Wherein, Ht represents the real-time head, PrIn represents the pump inlet pressure value, p represents the medium density, g represents the gravity acceleration, P2 represents the outlet pressure, Z2 represents the height difference between the pump center and the center of the outlet precision pressure gauge, Z1 represents the height difference between the pump center and the center of the inlet precision pressure gauge, V2 represents the average flow rate of the water flow at the outlet pressure taking position, V1 represents the average flow rate of the water flow at the inlet pressure taking position, and h represents the pipeline resistance loss between the inlet pressure taking position and the outlet pressure taking position.

[0079] In an embodiment, the calculating the head at the rated speed according to the real-time head comprises:

[0080] The head at the rated speed is calculated according to the real-time head by using the following formula (3):

[0081]

[0082] Wherein, Hn represents the head at the rated speed, Ht represents the real-time head, n represents the real-time speed, and N represents the rated speed.

[0083] In an embodiment, the converting the flow rate, efficiency and shaft power at the rated speed into the flow rate, efficiency and shaft power at the real-time speed comprises:

[0084] The flow rate, efficiency and shaft power at the rated speed are converted into the flow rate, efficiency and shaft power at the real-time speed by using the following formula (4):

[0085]

[0086] Wherein, n represents real-time speed, N represents rated speed, Qn represents flow under rated speed, En represents efficiency under rated speed, Pn represents shaft power under rated speed, Qt represents flow under real-time speed, Et represents efficiency under real-time speed, and Pt represents shaft power under real-time speed.

[0087] In an embodiment, the judging whether the pump outlet check valve is in a closed state according to the flow, efficiency and shaft power under the real-time speed comprises:

[0088] The judging whether the pump check valve is in a closed state according to whether the value of the shaft power under the real-time speed divided by the motor efficiency is greater than the motor power;

[0089] When the value of the shaft power under the real-time speed divided by the motor efficiency is greater than the motor power, the pump outlet check valve is in a closed state.

[0090] When the value of the shaft power under the real-time speed divided by the motor efficiency is less than the motor power, the pump outlet check valve is in an open state.

[0091] In the embodiment, when the pump operation abnormality is monitored, the monitoring data and the judging result can be uploaded to a system. For example, when it is judged that the check valve is in an open state, the head, flow, efficiency and shaft power under the real-time speed can be uploaded; when it is judged that the check valve is in a closed state, the flow can be set to zero, the curve is queried to obtain the head, flow, efficiency and shaft power under the rated speed corresponding to zero flow under the rated speed, the head, flow, efficiency and shaft power under the rated speed corresponding to zero flow under the rated speed are converted into the head, flow, efficiency and shaft power under the rated speed corresponding to zero flow under the rated speed under the actual speed, and the converted head, flow, efficiency and shaft power are reported. In actual application, the reporting can be performed through a private protocol or VT6000 real-time network communication.

[0092] The pump abnormal operation detection method provided in the embodiment of the application acquires a real-time current value, judges whether a pump unit is in an operation state according to the real-time current value, acquires real-time monitoring data of the pump when it is judged that the pump unit is in the operation state, judges whether a pump outlet check valve is in a closed state according to the real-time monitoring data of the pump, and determines that the pump is in abnormal operation and performs early warning when it is judged that the pump outlet check valve is in the closed state. The scheme provided in the application can timely detect whether the pump has a risk of burning, and timely performs early warning when it is detected that the pump has the risk of burning.

[0093] The application will be described in detail below with reference to application examples.

[0094] The specific process of the embodiment can be as follows:

[0095] Thread 1 execution: Real-time acquisition of pump group start-stop, speed, frequency data through OPC communication;

[0096] Thread 2 execution: Real-time acquisition of pressure signal input VT600 (VT6000 is an Internet of Things intelligent terminal) and uploading through TCP-RS485 signal;

[0097] Thread 3 execution: Real-time current data acquisition and uploading through TCP-RS485 signal;

[0098] Thread 4 execution: Thread 1, Thread 2, Thread 3 data synchronization;

[0099] Thread 5 execution:

[0100] Step 1, calculate the inlet pressure PrIn according to the liquid level using formula (1);

[0101] Step 2, determine whether the pump is running according to the collected data (current): current > 0, running; current = 0, not running;

[0102] Step 3, when current > 0, calculate the real-time head Ht according to the inlet and outlet pressures using formula (2);

[0103] Step 4, calculate the head Hn at rated speed N according to the real-time head Ht, real-time speed n, and rated speed N using formula (3);

[0104] Step 5, find the flow rate Qn, efficiency En, and shaft power Pn at rated speed N by searching the pump characteristic curve;

[0105] Step 6, convert the flow rate Qt, efficiency Et, and shaft power Pt at real-time speed n according to the real-time speed n, rated speed N, using formula (4);

[0106] Step 7, determine according to Pt / motor efficiency and motor power comparison:

[0107] Pt / motor efficiency > motor power: check valve closed;

[0108] Pt / motor efficiency < motor power: check valve open;

[0109] Step 8, if Pt / motor efficiency > motor power, then the flow rate is zero, and steps 5 and 6 are executed;

[0110] Step 9, if Pt / motor efficiency < motor power, then real-time display;

[0111] Step 10, real-time display of data at real-time speed;

[0112] Step 11, current = 0, real-time display;

[0113] Step 12, calculate cumulative data;

[0114] Step 13, upload all data to cloud platform (cloud display) ;

[0115] Step 14, flow, head data to VT6000 terminal (local display).

[0116] In order to realize the method of the embodiment of the application, the embodiment of the application further provides a pump abnormal operation detection device. Figure 2 As shown in the figure, the pump abnormal operation detection device 200 comprises: a real-time current value acquisition module 201, an operation state judgment module 202, a check valve state judgment module 203 and a pre-warning module 204; wherein,

[0117] The real-time current value acquisition module 201 is configured to acquire a real-time current value, and judge whether the pump unit is in an operation state according to the real-time current value.

[0118] The operation state judgment module 202 is configured to acquire real-time monitoring data of the pump when judging that the pump unit is in the operation state.

[0119] The check valve state judgment module 203 is configured to judge whether the pump check valve is in a closed state according to the real-time monitoring data of the pump.

[0120] The pre-warning module 204 is configured to determine that the pump is in abnormal operation and pre-warn when judging that the pump check valve is in the closed state.

[0121] In actual application, the real-time current value acquisition module 201, the operation state judgment module 202, the check valve state judgment module 203 and the pre-warning module 204 can be realized by a processor in the pump abnormal operation detection device.

[0122] It should be noted that: the above device provided by the above embodiment is executed, and only the above-mentioned each program module is divided and exemplified, and in actual application, the above-mentioned processing can be distributed by different program modules according to the needs, that is, the internal structure of the terminal is divided into different program modules to complete all or part of the above-mentioned processing. In addition, the above-mentioned device and the above-mentioned method embodiment provided by the above-mentioned embodiment belong to the same concept, and the specific implementation process is shown in the method embodiment, which will not be repeated here.

[0123] In order to realize the method of the embodiment of the application, the embodiment of the application further provides a computer program product, which comprises computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions, so that the computer device executes the steps of the above-mentioned method.

[0124] Based on the hardware implementation of the above-described program modules, and in order to implement the method of this embodiment of the invention, this embodiment also provides an electronic device (computer device). Specifically, in one embodiment, the computer device may be a terminal, and its internal structure diagram may be as follows: Figure 3 As shown. The computer device includes a processor A01, a network interface A02, a display screen A04, an input device A05, and a memory (not shown) connected via a system bus. The processor A01 provides computing and control capabilities. The memory includes internal memory A03 and a non-volatile storage medium A06. The non-volatile storage medium A06 stores an operating system B01 and a computer program B02. The internal memory A03 provides an environment for the operation of the operating system B01 and the computer program B02 stored in the non-volatile storage medium A06. The network interface A02 is used for communication with external terminals via a network connection. When the computer program is executed by the processor A01, it implements the method of any of the above embodiments. The display screen A04 can be a liquid crystal display or an electronic ink display. The input device A05 can be a touch layer covering the display screen, a button, trackball, or touchpad mounted on the computer device casing, or an external keyboard, touchpad, or mouse.

[0125] Those skilled in the art will understand that Figure 3 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0126] The device provided in the embodiments of the present invention includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it implements the method of any of the above embodiments.

[0127] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0128] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0129] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0130] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0131] In one typical configuration, the computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0132] The memory can include non-persistent memory and / or volatile memory, such as a random access memory (RAM) including a cache area for the temporary storage of data. The memory can also include non-volatile memory, such as read only memory (ROM) for storing structural information and / or instruction data. Access and control of memory can be facilitated by a Memory Controller. Note that the software can be downloaded to the computer in electronic form over a network, for example, or it can be supplied

[0133] Computer-readable media includes permanent and non-permanent, moveable and non- moveable media that can be implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, without limitation, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disks (DVDs) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information for access by a computing device. According to the definitions herein, computer-readable media does not include transitory media, such as modulated data signals and carrier waves.

[0134] It can be understood that the memory of the embodiments of the present application can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a ferromagnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM). The magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example but not limitation, many forms of RAM can be used, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), sync link dynamic random access memory (SLDRAM), and direct rambus random access memory (DRRAM).The memory described in the embodiments of the present application is intended to include, but not be limited to, the memory of these and any other suitable type of memory.

[0135] It should also be noted that the terms "comprising", "comprises", "including", "includes" or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0136] The above only describes the embodiments of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A pump abnormal operation detection method characterized by, The method comprises: acquiring a real-time current value, and determining whether a pump unit is in a running state according to the real-time current value; when it is determined that the pump unit is in the running state, acquiring real-time monitoring data of the pump; determining whether a pump outlet check valve is in a closed state according to the real-time monitoring data of the pump; when it is determined that the pump outlet check valve is in the closed state, determining that the pump is abnormally running, and performing a warning; wherein the determining whether the pump outlet check valve is in the closed state according to the real-time monitoring data of the pump comprises: acquiring a liquid level value in the real-time monitoring data, and calculating a pump inlet pressure value according to the liquid level value; acquiring an outlet pressure value in the real-time monitoring data; calculating a pump real-time lift according to the inlet pressure value and the outlet pressure value; calculating a lift under a rated rotating speed according to the real-time lift; inquiring a pump characteristic curve according to the lift under the rated rotating speed to acquire a flow rate, an efficiency and a shaft power under the rated rotating speed; converting the flow rate, the efficiency and the shaft power under the rated rotating speed into a flow rate, an efficiency and a shaft power under a real-time rotating speed; determining whether the pump outlet check valve is in the closed state by using the flow rate, the efficiency and the shaft power under the real-time rotating speed.

2. The method of claim 1, wherein, The determining whether the pump unit is in the running state according to the real-time current value comprises: when the real-time current value is greater than 0, determining that the pump unit is in the running state; when the real-time current value is equal to 0, determining that the pump unit is in a non-running state.

3. The method of claim 1, wherein, The calculating the pump inlet pressure value according to the liquid level value comprises: calculating the pump inlet pressure value according to the liquid level value by using the following formula (1): wherein PrIn represents the pump inlet pressure value, H1 represents the liquid level, ρ represents a medium density, and g represents a gravitational acceleration.

4. The method of claim 1, wherein, The calculating the pump real-time lift according to the inlet pressure value and the outlet pressure value comprises: The pump real-time head is calculated according to the import pressure value and the export pressure value by using the following formula (2): wherein Ht represents the real-time lift, PrIn represents the pump inlet pressure value, ρ represents the medium density, g represents the gravitational acceleration, P2 represents the outlet pressure, Z2 represents a height difference between a pump center and a center of an outlet precision pressure gauge, Z1 represents a height difference between the pump center and a center of an inlet precision pressure gauge, V2 represents an average flow rate of water flow at a water outlet pressure pressure position, V1 represents an average flow rate of water flow at a water inlet pressure pressure position, and h represents a pipeline resistance loss between the water inlet pressure pressure position and the water outlet pressure pressure position.

5. The method of claim 1, wherein, The calculating the lift under the rated rotating speed according to the real-time lift comprises: The real-time head is calculated by using the following formula (3) to calculate the head at the rated rotating speed: wherein Hn represents the lift under the rated rotating speed, Ht represents the real-time lift, n represents the real-time rotating speed, and N represents the rated rotating speed.

6. The method of claim 1, wherein, The converting the flow rate, the efficiency and the shaft power under the rated rotating speed into the flow rate, the efficiency and the shaft power under the real-time rotating speed comprises: converting the flow rate, the efficiency and the shaft power under the rated rotating speed into the flow rate, the efficiency and the shaft power under the real-time rotating speed by using the following formula (4): E t = En wherein n represents the real-time rotating speed, N represents the rated rotating speed, Qn represents the flow rate under the rated rotating speed, En represents the efficiency under the rated rotating speed, Pn represents the shaft power under the rated rotating speed, Qt represents the flow rate under the real-time rotating speed, Et represents the efficiency under the real-time rotating speed, and Pt represents the shaft power under the real-time rotating speed.

7. The method of claim 1, wherein, The method comprises: The method comprises: The method comprises: The method comprises:

8. A smart terminal, characterized by The method comprises: The method comprises:

9. A storage medium having stored therein a computer program, characterized in that The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method comprises: The method

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