Self-adaptive control method and system for working state of circulating water pump

Abstract

The invention relates to the technical field of water pump working control, in particular to a self-adaptive control method and system for the working state of a circulating water pump, and the method specifically comprises the steps that motor working data of the circulating water pump and state data of a pipeline connected with the water pump at different moments are collected in real time; acquiring a working state variable of the motor and a working state variable of the pipeline; and establishing a circulating water pump working state monitoring model, evaluating and calculating a working state overall adjustment value of the circulating water pump in real time, and adaptively controlling the working state of the circulating water pump according to the working state adjustment value. The problems that in the prior art, the working state of the circulating water pump is not monitored in place, and the working state is not controlled accurately are solved, fine control and working state monitoring of the circulating water pump are achieved, and the reliability, efficiency and performance of a circulating water pump system are improved.

Description

Technical Field

[0001] The invention relates to the technical field of water pump operation control, and relates to an operating state adaptive control method and system for a circulating water pump. Background Art

[0002] A circulating water pump is a mechanical device used to circulate water or other liquids. It usually consists of a motor, a pump body, an impeller, a shaft, and a sealing device. The circulating water pump is driven by a motor to rotate the impeller, thereby generating centrifugal force, sucking the liquid into the pump body and supplying it to the system that needs to circulate through the outlet pipe. Circulating water pumps are widely used in various fields, such as water supply circulation systems in buildings, industrial process circulation systems, and farmland irrigation systems. They can be used in a variety of application scenarios such as water circulation, heating, cooling, and water supply; achieving refined control and working status monitoring of circulating water pumps, and improving the reliability, efficiency, and performance of circulating water pump systems are important challenges faced by circulating water pump manufacturers.

[0003] In the existing disclosed invention technology, for example, the patent with application publication number CN105179217A discloses a constant temperature automatic control system for a circulating water pump, including: a circulating water pump, a frequency converter connected to a control end of the circulating water pump, a pressure regulator connected to the frequency converter, a temperature regulator connected to the pressure regulator, a pressure sensor arranged at the water outlet of the circulating water pump, a temperature sensor arranged at the water inlet of the circulating water pump, and a temperature signal conversion module connected to the temperature sensor; the pressure sensor is also connected to the pressure regulator, and the temperature signal conversion module is connected to the temperature regulator.

[0004] The above patent uses a single temperature sensor and pressure sensor to obtain the working status parameters of the circulating water pump. However, for complex working conditions, relying solely on the data of a single sensor may not be sufficient to fully understand the working status of the circulating water pump, and there is a problem of incomplete collection of the working data of the circulating water pump. At the same time, in the above patent, when facing different working conditions, the control strategy is mainly regulated by the frequency converter, pressure regulator and temperature regulator. The control strategy is relatively simple, the control accuracy is poor, and it is unable to respond to complex working condition changes with high flexibility. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] The technical problem to be solved by the present invention is aimed at the prior art. The present invention solves the problems in the prior art of inadequate monitoring of the working state of a circulating water pump and inaccurate control of the working state, and proposes a method and system for adaptively controlling the working state of a circulating water pump, which realizes refined control and working state monitoring of the circulating water pump and improves the reliability, efficiency and performance of the circulating water pump system.

[0007] In order to achieve the above object, the technical solution of a method for adaptively controlling the working state of a circulating water pump of the present invention comprises the following steps:

[0008] S1: collect the motor working data of the circulating water pump and the status data of the pipe connected to the water pump in real time at different times through the sensor system;

[0009] S2: Bring the motor working data of the circulating water pump in S1 into the motor state change calculation strategy to obtain the motor working state variable;

[0010] S3: Bring the state data of the pipeline connected to the water pump in S1 into the pipeline state change calculation strategy to obtain the working state variable of the pipeline;

[0011] S4: Establish a circulating water pump working state monitoring model, and import the working state variables of the motor and the working state variables of the pipeline into the model, evaluate and calculate the overall adjustment value of the working state of the circulating water pump in real time, and adaptively control the working state of the circulating water pump according to the working state adjustment value.

[0012] Specifically, in S1, the motor working data includes: collecting the real-time temperature data of the motor through the temperature sensor, and forming the real-time temperature data set of the motor as {T 1,t ,T 2,t ...T n,t ,T N,t}, where T n,t is the temperature data of the motor collected by the nth temperature sensor at the collection time point t, and the motor working data also includes: collecting real-time vibration data of the motor through the vibration sensor, forming the real-time vibration data set of the motor as {F 1,t ,F 2,t ...F m, t ...F M,t}, where F m,t is the vibration data of the motor collected by the mth vibration sensor at the collection time point t; t is the different time points of data collection, and N and M are the total number of sensors used to collect data.

[0013] Specifically, in S1, the state data of the pipeline connected to the water pump includes: real-time pipeline pressure data through the pressure sensor, forming a pressure data set P of the pipeline connected to the water pump i,t = {P 1,t ,P 2,t ,P 3,t}, where P 1,t is the pipeline pressure data of the water inlet pipeline at the collection time point t, T 2,t is the pipeline pressure data of the return pipeline at the collection time point t, T 3,t is the pipeline data of the water supply pipeline at the collection time point t; the state data of the pipeline connected to the water pump also includes: the flow data of the pipeline in real time through the turbine flowmeter, constituting the flow data set L of the pipeline connected to the water pump i,t ={L 1,t ,L 2,t ,L 3,t}, where L 1,t is the pipeline flow data of the water inlet pipeline at the collection time point t, L 2,t is the pipeline pressure data of the return pipeline at the collection time point t, L 3,t It is the pipeline data of the water supply pipeline at the collection time point t.

[0014] Specifically, in S2, the motor state change calculation strategy includes:

[0015] S21: extract the temperature data of the motor collected by N temperature sensors, including the stator temperature data, rotor temperature data and bearing temperature data of the motor, calculate the temperature average of the stator temperature data, rotor temperature data and bearing temperature data of the motor and set it as Calculate the deviation of the temperature data of the stator, rotor and bearing of the motor collected by the nth temperature sensor

[0016] S22: Determine the temperature variable of the motor's working state.

[0017] When Φ T ≥0.85 or Φ T When ≤-0.85, the working temperature variable of the motor is extracted as Φ T ;

[0018] When -0.85<Φ T <0.85, the working temperature variable of the motor at this moment is extracted as Φ T , the temperature variable at this moment is the default temperature variable Φ T =0;

[0019] S23: extracting the vibration data of the motor collected by M vibration sensors, including the stator vibration data, rotor vibration data and bearing vibration data of the motor, calculating the vibration mean of the stator vibration data, rotor vibration data and bearing vibration data of the motor and setting it as Calculate the deviation value of the vibration data of the stator, rotor and bearing of the motor collected by the mth vibration sensor

[0020] S24: Determine the vibration variable of the motor's working state.

[0021] When Φ F ≥2.23 or Φ F ≤-1.76, the vibration variable of the motor working state at this time is extracted as Φ F ;

[0022] When -1.76<Φ F <2.23, the vibration variable of the motor working state at this moment is extracted as Φ F , the vibration variable at this moment is the default vibration variable Φ F =0;

[0023] S25: Calculate and obtain the motor state change Φ1 = α1 × Φ T +α2×Φ F , where α1 and α2 are the influence coefficients of the changes in temperature data and vibration data, respectively.

[0024] Specifically, in S3, the pipeline state change calculation strategy includes:

[0025] S31: The pressure data and flow data of the pipe connected to the water pump are collected in real time through the pressure sensor and the turbine flowmeter. When the collection time is t, the pressure ratio data at the distance h from the water inlet of the water inlet pipe is The pressure ratio data at the distance h from the water inlet of the return pipe is The pressure ratio data at the distance h from the water inlet of the water supply pipe is The pipeline pressure ratio data set is P i, ' t = {P1′ ,t ,P2′ ,t ,P3′ ,t};

[0026] Assume that at the collection time point t, the flow ratio data at a distance h from the water inlet of the water inlet pipe is The flow ratio data at the distance h from the water inlet of the return pipe is The pressure ratio data at the distance h from the water inlet of the water supply pipe is The pipeline pressure ratio data set is Li ' ,t ={L1′ ,t ,L2′ ,t ,L3′ ,t};

[0027] S32: According to the pressure ratio data set of the pipes connected to the water pump, the average pressure ratio of the water inlet pipe, the return pipe and the water supply pipe is calculated and set as Calculate the deviation value of the pressure ratio data of the pipe connected to the water pump at the collection time point t

[0028] S33: Determine the working state pressure ratio variable of the pipe connected to the water pump.

[0029] When Φ P ≥0.66 or Φ P When ≤-0.66, the working state pressure ratio variable of the pipeline at this moment is extracted as Φ P ;

[0030] When -0.66<Φ P <0.66, the working state pressure ratio variable of the pipeline at this moment is extracted as Φ P , the pressure ratio variable at this moment is the default pressure ratio variable Φ P =0;

[0031] S34: Calculate the mean value of the flow ratio of the water inlet pipe, the return pipe and the water supply pipe according to the flow ratio data set of the pipe connected to the water pump, and set it as Calculate the deviation value of the flow rate of the pipe connected to the water pump at the collection time point t

[0032] S35: Determine the flow rate ratio variable of the working state of the pipe connected to the water pump.

[0033] When Φ L ≥4.42 or Φ L ≤-4.42, the working state flow ratio variable of the pipeline at this moment is extracted as Φ P ;

[0034] When -4.42<Φ L <4.42, the working state flow ratio variable of the pipeline at this moment is extracted as Φ P , the flow ratio variable at this moment is the default flow ratio variable Φ P =0;

[0035] S36: Calculate and obtain the working state change of the pipe connected to the water pump Φ2=α3×Φ P +α4×Φ L, where α3 and α4 are the influence coefficients of the changes in pressure data and flow data, respectively.

[0036] Specifically, in S4, the calculation strategy of the overall adjustment value Φ of the working state of the circulating water pump is as follows:

[0037] Φ=β1×Φ1+β2×Φ2;

[0038] Among them, β1 and β2 are the influence coefficients of the working state variables of the motor and the working state variables of the pipeline respectively; β1+β2=1, and β1≤0.5.

[0039] Specifically, in S4, the adaptively controlling the working state of the circulating water pump according to the working state adjustment value includes:

[0040] S41: in the circulating water pump working state monitoring model, extract the overall adjustment value Φ of the working state of the circulating water pump. When Φ=0, return to S1 and continue to perform adaptive monitoring of the working state of the circulating water pump; otherwise, execute step S42;

[0041] S42: extracting real-time data of the overall adjustment value Φ of the working state of the circulating water pump, obtaining the motor state change Φ1 and the working state change Φ2 of the pipe connected to the water pump corresponding to the overall adjustment value Φ of the working state of different circulating water pumps;

[0042] When both Φ1 and Φ2 are not 0, the circulating water pump should be shut down for inspection and cleaned;

[0043] When Φ1≠0 but Φ2=0, execute step S43;

[0044] When Φ1=0 but Φ2≠0, execute step S44;

[0045] S43: Extract the working state temperature variable of the motor corresponding to Φ1 as Φ T And the working state vibration variable of the motor is Φ F ;

[0046] When Φ T When ≠0, reduce the load on the motor or increase the efficiency of the cooling system;

[0047] When Φ F When ≠0, fix the supporting structure of the circulating water pump to achieve dynamic balance in the working state of the circulating water pump;

[0048] S44: Extract the working state pressure ratio variable of the water pump connecting pipe corresponding to Φ2 as Φ P The working state flow ratio variable of the pipe connected to the water pump is Φ L ;

[0049] When ΦP When ≠0, adjust the speed of the circulating water pump to change the pressure in the pipeline;

[0050] When Φ L When ≠0, adjust the opening of the outlet valve of the circulating water pump to change the flow rate of the pipeline.

[0051] In addition, the working state adaptive control system of a circulating water pump of the present invention includes the following modules:

[0052] Data acquisition module, working state variable calculation module, central control module;

[0053] The data acquisition module collects the motor working data of the circulating water pump and the status data of the pipeline connected to the water pump in real time at different times through the sensor system;

[0054] The working state variable calculation module is used to obtain the working state variables of the circulating water pump;

[0055] The central control module is used to establish a circulating water pump working state monitoring model, evaluate and calculate the overall adjustment value of the circulating water pump working state in real time, and adaptively control the working state of the circulating water pump according to the working state adjustment value.

[0056] Specifically, the working state variable calculation module includes a working state variable calculation unit of the motor, a working state variable extraction unit of the motor, and a working state variable calculation unit of the pipeline, and a working state variable extraction unit of the pipeline;

[0057] The motor working state variable calculation unit brings the motor working data of the circulating water pump into the motor state change calculation strategy for calculation;

[0058] The motor working state variable extraction unit is used to obtain the motor working state variable;

[0059] The working state variable calculation unit brings the state data of the pipeline connected to the water pump into the pipeline state change calculation strategy for calculation;

[0060] The pipeline working state variable extraction unit obtains the working state variable of the pipeline;

[0061] The central control module includes: a working status monitoring unit, an overall adjustment value evaluation unit, and an adaptive control unit.

[0062] Compared with the prior art, the technical effects of the present invention are as follows:

[0063] 1. The present invention collects the motor working data and pipeline status data of the circulating water pump in real time through the sensor system, which solves the problem of untimely or inaccurate data acquisition in the traditional method and ensures accurate monitoring of the working status of the circulating water pump.

[0064] 2. The present invention brings the collected data into the state change calculation strategy to calculate, establish a working state monitoring model, and comprehensively evaluate the overall adjustment value of the working state of the circulating water pump. In this way, the working state of the circulating water pump can be more comprehensively understood, rather than relying solely on a single indicator or experience judgment.

[0065] 3. The present invention realizes adaptive control of the circulating water pump according to the calculated working state adjustment value, and can dynamically adjust the working state of the circulating water pump to adapt to different working conditions and requirements. This adaptability can improve the stability and efficiency of the system and achieve better working state control under different circumstances. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0067] in:

[0068] Figure 1 It is a schematic flow chart of a method for adaptively controlling the working state of a circulating water pump according to the present invention;

[0069] Figure 2 It is a structural schematic diagram of a working state adaptive control system of a circulating water pump of the present invention; DETAILED DESCRIPTION

[0070] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0071] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0072] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0073] Embodiment 1:

[0074] like Figure 1 As shown, a method for adaptively controlling the working state of a circulating water pump according to an embodiment of the present invention is as follows: Figure 1 As shown, the specific steps include:

[0075] S1: collect the motor working data of the circulating water pump and the status data of the pipe connected to the water pump in real time at different times through the sensor system;

[0076] In S1, the motor working data includes: collecting the real-time temperature data of the motor through the temperature sensor, forming the real-time temperature data set of the motor:

[0077] {T 1,t ,T 2,t ...T n,t ,T N,t}, where T n,t is the temperature data of the motor collected by the nth temperature sensor at the collection time point t, and the motor working data also includes: collecting real-time vibration data of the motor through the vibration sensor, forming the real-time vibration data set of the motor as {F 1,t ,F 2,t ...F m,t ...F M,t}, where F m,t is the vibration data of the motor collected by the mth vibration sensor at the collection time point t; t is the different time points of data collection, and N and M are the total number of sensors used to collect data.

[0078] In S1, the state data of the pipeline connected to the water pump includes: real-time pipeline pressure data through the pressure sensor, forming a pressure data set P of the pipeline connected to the water pump i,t = {P 1,t ,P 2,t ,P 3,t}, where P 1,t is the pipeline pressure data of the water inlet pipeline at the collection time point t, T 2,t is the pipeline pressure data of the return pipeline at the collection time point t, T 3,tis the pipeline data of the water supply pipeline at the collection time point t; the state data of the pipeline connected to the water pump also includes: the flow data of the pipeline in real time through the turbine flowmeter, constituting the flow data set L of the pipeline connected to the water pump i,t ={L 1,t ,L 2,t ,L 3,t}, where L 1,t is the pipeline flow data of the water inlet pipeline at the collection time point t, L 2,t is the pipeline pressure data of the return pipeline at the collection time point t, L 3,t It is the pipeline data of the water supply pipeline at the collection time point t.

[0079] S2: Bring the motor working data of the circulating water pump in S1 into the motor state change calculation strategy to obtain the motor working state variable;

[0080] In S2, the motor state change calculation strategy includes:

[0081] S21: extract the temperature data of the motor collected by N temperature sensors, including the stator temperature data, rotor temperature data and bearing temperature data of the motor, calculate the temperature average of the stator temperature data, rotor temperature data and bearing temperature data of the motor and set it as Calculate the deviation of the temperature data of the stator, rotor and bearing of the motor collected by the nth temperature sensor

[0082] S22: Determine the temperature variable of the motor's working state.

[0083] When Φ T ≥0.85 or Φ T When ≤-0.85, the working temperature variable of the motor is extracted as Φ T ;

[0084] When -0.85<Φ T <0.85, the working temperature variable of the motor at this moment is extracted as Φ T , the temperature variable at this moment is the default temperature variable Φ T =0;

[0085] S23: extracting the vibration data of the motor collected by M vibration sensors, including the stator vibration data, rotor vibration data and bearing vibration data of the motor, calculating the vibration mean of the stator vibration data, rotor vibration data and bearing vibration data of the motor and setting it as Calculate the deviation value of the vibration data of the stator, rotor and bearing of the motor collected by the mth vibration sensor

[0086] S24: Determine the vibration variable of the motor's working state.

[0087] When Φ F ≥2.23 or Φ F ≤-1.76, the vibration variable of the motor working state at this time is extracted as Φ F ;

[0088] When -1.76<Φ F <2.23, the vibration variable of the motor working state at this moment is extracted as Φ F , the vibration variable at this moment is the default vibration variable Φ F =0;

[0089] S25: Calculate and obtain the motor state change Φ1 = α1 × Φ T +α2×Φ F , where α1 and α2 are the influence coefficients of the changes in temperature data and vibration data, respectively.

[0090] S3: Bring the state data of the pipeline connected to the water pump in S1 into the pipeline state change calculation strategy to obtain the working state variable of the pipeline;

[0091] In S3, the pipeline state change calculation strategy includes:

[0092] S31: The pressure data and flow data of the pipe connected to the water pump are collected in real time through the pressure sensor and the turbine flowmeter. When the collection time is t, the pressure ratio data at the distance h from the water inlet of the water inlet pipe is The pressure ratio data at the distance h from the water inlet of the return pipe is The pressure ratio data at the distance h from the water inlet of the water supply pipe is The pipeline pressure ratio data set is P i, ' t = {P1′ ,t ,P2′ ,t ,P3′ ,t};

[0093] Assume that at the collection time point t, the flow ratio data at a distance h from the water inlet of the water inlet pipe is The flow ratio data at the distance h from the water inlet of the return pipe is The pressure ratio data at the distance h from the water inlet of the water supply pipe is The pipeline pressure ratio data set is L i ' ,t ={L1′ ,t ,L2′ ,t ,L3′ ,t};

[0094] S32: According to the pressure ratio data set of the pipes connected to the water pump, the average pressure ratio of the water inlet pipe, the return pipe and the water supply pipe is calculated and set as Calculate the deviation value of the pressure ratio data of the pipe connected to the water pump at the collection time point t

[0095] S33: Determine the working state pressure ratio variable of the pipe connected to the water pump.

[0096] When Φ P ≥0.66 or Φ P When ≤-0.66, the working state pressure ratio variable of the pipeline at this moment is extracted as Φ P ;

[0097] When -0.66<Φ P <0.66, the working state pressure ratio variable of the pipeline at this moment is extracted as Φ P , the pressure ratio variable at this moment is the default pressure ratio variable Φ P =0;

[0098] S34: Calculate the mean value of the flow ratio of the water inlet pipe, the return pipe and the water supply pipe according to the flow ratio data set of the pipe connected to the water pump, and set it as Calculate the deviation value of the flow rate of the pipe connected to the water pump at the collection time point t

[0099] S35: Determine the flow rate ratio variable of the working state of the pipe connected to the water pump.

[0100] When Φ L ≥4.42 or Φ L ≤-4.42, the working state flow ratio variable of the pipeline at this moment is extracted as Φ P ;

[0101] When -4.42<Φ L <4.42, the working state flow ratio variable of the pipeline at this moment is extracted as Φ P , the flow ratio variable at this moment is the default flow ratio variable Φ P =0;

[0102] S36: Calculate and obtain the working state change of the pipe connected to the water pump Φ2=α3×Φ P +α4×Φ L , where α3 and α4 are the influence coefficients of the changes in pressure data and flow data, respectively.

[0103] S4: Establish a circulating water pump working state monitoring model, and import the working state variables of the motor and the working state variables of the pipeline into the model, evaluate and calculate the overall adjustment value of the working state of the circulating water pump in real time, and adaptively control the working state of the circulating water pump according to the working state adjustment value.

[0104] In S4, the calculation strategy of the overall adjustment value Φ of the working state of the circulating water pump is as follows:

[0105] Φ=β1×Φ1+β2×Φ2;

[0106] Among them, β1 and β2 are the influence coefficients of the working state variables of the motor and the working state variables of the pipeline respectively; β1+β2=1, and β1≤0.5.

[0107] In S4, the adaptively controlling the working state of the circulating water pump according to the working state adjustment value includes:

[0108] S41: in the circulating water pump working state monitoring model, extract the overall adjustment value Φ of the working state of the circulating water pump. When Φ=0, return to S1 and continue to perform adaptive monitoring of the working state of the circulating water pump; otherwise, execute step S42;

[0109] S42: extracting real-time data of the overall adjustment value Φ of the working state of the circulating water pump, obtaining the motor state change Φ1 and the working state change Φ2 of the pipe connected to the water pump corresponding to the overall adjustment value Φ of the working state of different circulating water pumps;

[0110] When both Φ1 and Φ2 are not 0, the circulating water pump should be shut down for inspection and cleaned;

[0111] When Φ1≠0 but Φ2=0, execute step S43;

[0112] When Φ1=0 but Φ2≠0, execute step S44;

[0113] S43: Extract the working state temperature variable of the motor corresponding to Φ1 as Φ T And the working state vibration variable of the motor is Φ F ;

[0114] When Φ T When ≠0, reduce the load on the motor or increase the efficiency of the cooling system;

[0115] When Φ F When ≠0, fix the supporting structure of the circulating water pump to achieve dynamic balance in the working state of the circulating water pump;

[0116] S44: Extract the working state pressure ratio variable of the water pump connecting pipe corresponding to Φ2 as Φ PThe working state flow ratio variable of the pipe connected to the water pump is Φ L ;

[0117] When Φ P When ≠0, adjust the speed of the circulating water pump to change the pressure in the pipeline;

[0118] When Φ L When ≠0, adjust the opening of the outlet valve of the circulating water pump to change the flow rate of the pipeline.

[0119] Embodiment 2:

[0120] like Figure 2 As shown, an adaptive control system for the working state of a circulating water pump according to an embodiment of the present invention is as follows: Figure 2 As shown, it includes the following modules:

[0121] Data acquisition module, working state variable calculation module, central control module;

[0122] The data acquisition module collects the motor working data of the circulating water pump and the status data of the pipeline connected to the water pump in real time at different times through the sensor system;

[0123] The working state variable calculation module is used to obtain the working state variables of the circulating water pump;

[0124] The central control module is used to establish a circulating water pump working state monitoring model, evaluate and calculate the overall adjustment value of the circulating water pump working state in real time, and adaptively control the working state of the circulating water pump according to the working state adjustment value.

[0125] The working state variable calculation module includes a working state variable calculation unit for the motor, a working state variable extraction unit for the motor, and a working state variable calculation unit for the pipeline, and a working state variable extraction unit for the pipeline;

[0126] The motor working state variable calculation unit brings the motor working data of the circulating water pump into the motor state change calculation strategy for calculation;

[0127] The motor working state variable extraction unit is used to obtain the motor working state variable;

[0128] The working state variable calculation unit brings the state data of the pipeline connected to the water pump into the pipeline state change calculation strategy for calculation;

[0129] The pipeline working state variable extraction unit obtains the working state variable of the pipeline;

[0130] The central control module includes: a working status monitoring unit, an overall adjustment value evaluation unit, and an adaptive control unit.

[0131] Embodiment three:

[0132] This embodiment provides an electronic device, including: a processor and a memory, wherein the memory stores a computer program that can be called by the processor;

[0133] The processor executes the above-mentioned method for adaptively controlling the working state of a circulating water pump by calling a computer program stored in the memory.

[0134] The electronic device may have relatively large differences due to different configurations or performances, and may include one or more processors (Central Processing Units, CPU) and one or more memories, wherein the memory stores at least one computer program, which is loaded and executed by the processor to implement a method for adaptively controlling the working state of a circulating water pump provided in the above method embodiment. The electronic device may also include other components for implementing the functions of the device, for example, the electronic device may also have components such as a wired or wireless network interface and an input / output interface, so as to input and output data. This embodiment will not be described in detail here.

[0135] Embodiment 4:

[0136] This embodiment provides a computer-readable storage medium having a rewritable computer program stored thereon;

[0137] When the computer program runs on a computer device, the computer device executes the above-mentioned method for adaptively controlling the working state of a circulating water pump.

[0138] For example, the computer readable storage medium can be a read-only memory (ROM), a random access memory (RAM), a compact disc (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, etc.

[0139] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0140] It should be understood that determining B based on A does not mean determining B only based on A. B can also be determined based on A and / or other information.

[0141] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When a computer instruction or computer program is loaded or executed on a computer, a process or function according to an embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. Computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center through a wired network or / and a wireless network. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0142] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in the present invention can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0143] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0144] In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only one, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0145] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0146] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0147] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0148] In summary, compared with the prior art, the technical effects of the present invention are as follows:

[0149] 1. The present invention collects the motor working data and pipeline status data of the circulating water pump in real time through the sensor system, which solves the problem of untimely or inaccurate data acquisition in the traditional method and ensures accurate monitoring of the working status of the circulating water pump.

[0150] 2. The present invention brings the collected data into the state change calculation strategy to calculate, establish a working state monitoring model, and comprehensively evaluate the overall adjustment value of the working state of the circulating water pump. In this way, the working state of the circulating water pump can be more comprehensively understood, rather than relying solely on a single indicator or experience judgment.

[0151] 3. The present invention realizes adaptive control of the circulating water pump according to the calculated working state adjustment value, and can dynamically adjust the working state of the circulating water pump to adapt to different working conditions and requirements. This adaptability can improve the stability and efficiency of the system and achieve better working state control under different circumstances.

[0152] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for adaptively controlling the working state of a circulating water pump, characterized in that: The method comprises the following specific steps: S1: collect the motor working data of the circulating water pump and the status data of the pipe connected to the water pump in real time at different times through the sensor system; S2: Bring the motor working data of the circulating water pump in S1 into the motor state change calculation strategy to obtain the motor working state variable; S3: Bring the state data of the pipeline connected to the water pump in S1 into the pipeline state change calculation strategy to obtain the working state variable of the pipeline; S4: Establish a circulating water pump working state monitoring model, and import the working state variables of the motor and the working state variables of the pipeline into the model, evaluate and calculate the overall adjustment value of the working state of the circulating water pump in real time, and adaptively control the working state of the circulating water pump according to the working state adjustment value.

2. The method for adaptively controlling the working state of a circulating water pump according to claim 1, characterized in that: In S1, the motor working data includes: collecting the real-time temperature data of the motor through the temperature sensor, and forming the real-time temperature data set of the motor as {T 1,t ,T 2,t ...T n,t ,T N,t }, where T n,t is the temperature data of the motor collected by the nth temperature sensor at the collection time point t, and the motor working data also includes: collecting real-time vibration data of the motor through the vibration sensor, forming the real-time vibration data set of the motor as {F 1,t ,F 2,t ...F m,t ...F M,t }, where F m,t is the vibration data of the motor collected by the mth vibration sensor at the collection time point t; t is the different time points of data collection, and N and M are the total number of sensors used to collect data.

3. The method for adaptively controlling the working state of a circulating water pump according to claim 1, characterized in that: In S1, the state data of the pipeline connected to the water pump includes: real-time pipeline pressure data through the pressure sensor, forming a pressure data set P of the pipeline connected to the water pump i,t = {P 1,t ,P 2,t ,P 3,t }, where P 1,t is the pipeline pressure data of the water inlet pipeline at the collection time point t, T 2,t is the pipeline pressure data of the return pipeline at the collection time point t, T 3,t is the pipeline data of the water supply pipeline at the collection time point t; the state data of the pipeline connected to the water pump also includes: the flow data of the pipeline in real time through the turbine flowmeter, constituting the flow data set L of the pipeline connected to the water pump i,t ={L 1,t ,L 2,t ,L 3,t }, where L 1,t is the pipeline flow data of the water inlet pipeline at the collection time point t, L 2,t is the pipeline pressure data of the return pipeline at the collection time point t, L 3,t It is the pipeline data of the water supply pipeline at the collection time point t.

4. The method for adaptively controlling the working state of a circulating water pump according to claim 3, characterized in that: In S2, the motor state change calculation strategy includes: S21: extract the temperature data of the motor collected by N temperature sensors, including the stator temperature data, rotor temperature data and bearing temperature data of the motor, calculate the temperature average of the stator temperature data, rotor temperature data and bearing temperature data of the motor and set it as Calculate the deviation of the temperature data of the stator, rotor and bearing of the motor collected by the nth temperature sensor S22: Determine the temperature variable of the motor's working state. When Φ T ≥0.85 or Φ T When ≤-0.85, the working temperature variable of the motor is extracted as Φ T ; When -0.85<Φ T <0.85, the working temperature variable of the motor at this moment is extracted as Φ T , the temperature variable at this moment is the default temperature variable Φ T =0; S23: extracting the vibration data of the motor collected by M vibration sensors, including the stator vibration data, rotor vibration data and bearing vibration data of the motor, calculating the vibration mean of the stator vibration data, rotor vibration data and bearing vibration data of the motor and setting it as Calculate the deviation value of the vibration data of the stator, rotor and bearing of the motor collected by the mth vibration sensor S24: Determine the vibration variable of the motor's working state. When Φ F ≥2.23 or Φ F ≤-1.76, the vibration variable of the motor working state at this time is extracted as Φ F ; When -1.76<Φ F <2.23, the vibration variable of the motor working state at this moment is extracted as Φ F , the vibration variable at this moment is the default vibration variable Φ F =0; S25: Calculate and obtain the motor state change Φ1 = α1 × Φ T +α2×Φ F , where α1 and α2 are the influence coefficients of the changes in temperature data and vibration data, respectively.

5. The method for adaptively controlling the working state of a circulating water pump according to claim 4, characterized in that: In S3, the pipeline state change calculation strategy includes: S31: The pressure data and flow data of the pipe connected to the water pump are collected in real time through the pressure sensor and the turbine flowmeter. When the collection time is t, the pressure ratio data at the distance h from the water inlet of the water inlet pipe is The pressure ratio data at the distance h from the water inlet of the return pipe is The pressure ratio data at the distance h from the water inlet of the water supply pipe is The pipeline pressure ratio data set is P′ i,t = {P′ 1,t ,P′ 2,t ,P′ 3,t }; Assume that at the collection time point t, the flow ratio data at a distance h from the water inlet of the water inlet pipe is The flow ratio data at the distance h from the water inlet of the return pipe is The pressure ratio data at the distance h from the water inlet of the water supply pipe is The pipeline pressure ratio data set is L′ i,t = {L′ 1,t ,L′ 2,t ,L′ 3,t }; S32: According to the pressure ratio data set of the pipes connected to the water pump, the average pressure ratio of the water inlet pipe, the return pipe and the water supply pipe is calculated and set as Calculate the deviation value of the pressure ratio data of the pipe connected to the water pump at the collection time point t S33: Determine the working state pressure ratio variable of the pipe connected to the water pump. When Φ P ≥0.66 or Φ P When ≤-0.66, the working state pressure ratio variable of the pipeline at this moment is extracted as Φ P ; When -0.66<Φ P <0.66, the working state pressure ratio variable of the pipeline at this moment is extracted as Φ P , the pressure ratio variable at this moment is the default pressure ratio variable Φ P =0; S34: Calculate the mean value of the flow ratio of the water inlet pipe, the return pipe and the water supply pipe according to the flow ratio data set of the pipe connected to the water pump, and set it as Calculate the deviation value of the flow rate of the pipe connected to the water pump at the collection time point t S35: Determine the flow rate ratio variable of the working state of the pipe connected to the water pump. When Φ L ≥4.42 or Φ L ≤-4.42, the working state flow ratio variable of the pipeline at this moment is extracted as Φ P ; When -4.42<Φ L <4.42, the working state flow ratio variable of the pipeline at this moment is extracted as Φ P , the flow ratio variable at this moment is the default flow ratio variable Φ P =0; S36: Calculate and obtain the working state change of the pipe connected to the water pump Φ2=α3×Φ P +α4×Φ L , where α3 and α4 are the influence coefficients of the changes in pressure data and flow data, respectively.

6. The method for adaptively controlling the working state of a circulating water pump according to claim 5, characterized in that: In S4, the calculation strategy of the overall adjustment value Φ of the working state of the circulating water pump is as follows: Φ=β1×Φ1+β2×Φ2; Among them, β1 and β2 are the influence coefficients of the working state variables of the motor and the working state variables of the pipeline respectively; β1+β2=1, and β1≤0.

5.

7. The method for adaptively controlling the working state of a circulating water pump according to claim 6, characterized in that: In S4, the adaptively controlling the working state of the circulating water pump according to the working state adjustment value includes: S41: in the circulating water pump working state monitoring model, extract the overall adjustment value Φ of the working state of the circulating water pump. When Φ=0, return to S1 and continue to perform adaptive monitoring of the working state of the circulating water pump; otherwise, execute step S42; S42: extracting real-time data of the overall adjustment value Φ of the working state of the circulating water pump, obtaining the motor state change Φ1 and the working state change Φ2 of the pipe connected to the water pump corresponding to the overall adjustment value Φ of the working state of different circulating water pumps; When both Φ1 and Φ2 are not 0, the circulating water pump should be shut down for inspection and cleaned; When Φ1≠0 but Φ2=0, execute step S43; When Φ1=0 but Φ2≠0, execute step S44; S43: Extract the working state temperature variable of the motor corresponding to Φ1 as Φ T And the working state vibration variable of the motor is Φ F ; When Φ T When ≠0, reduce the load on the motor or increase the efficiency of the cooling system; When Φ F When ≠0, fix the supporting structure of the circulating water pump to achieve dynamic balance in the working state of the circulating water pump; S44: Extract the working state pressure ratio variable of the water pump connecting pipe corresponding to Φ2 as Φ P The working state flow ratio variable of the pipe connected to the water pump is Φ L ; When Φ P When ≠0, adjust the speed of the circulating water pump to change the pressure in the pipeline; When Φ L When ≠0, adjust the opening of the outlet valve of the circulating water pump to change the flow rate of the pipeline.

8. A method system for adaptively controlling the working state of a circulating water pump, which is implemented based on the method for adaptively controlling the working state of a circulating water pump according to any one of claims 1 to 7, characterized in that: The system includes the following modules: Data acquisition module, working state variable calculation module, central control module; The data acquisition module collects the motor working data of the circulating water pump and the status data of the pipeline connected to the water pump in real time at different times through the sensor system; The working state variable calculation module is used to obtain the working state variables of the circulating water pump; The central control module is used to establish a circulating water pump working state monitoring model, evaluate and calculate the overall adjustment value of the circulating water pump working state in real time, and adaptively control the working state of the circulating water pump according to the working state adjustment value.

9. The working state adaptive control system of a circulating water pump according to claim 8, characterized in that: The working state variable calculation module includes a working state variable calculation unit for the motor, a working state variable extraction unit for the motor, and a working state variable calculation unit for the pipeline, and a working state variable extraction unit for the pipeline; The motor working state variable calculation unit brings the motor working data of the circulating water pump into the motor state change calculation strategy for calculation; The motor working state variable extraction unit is used to obtain the motor working state variable; The working state variable calculation unit brings the state data of the pipeline connected to the water pump into the pipeline state change calculation strategy for calculation; The pipeline working state variable extraction unit obtains the working state variable of the pipeline; The central control module includes: a working status monitoring unit, an overall adjustment value evaluation unit, and an adaptive control unit.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for adaptively controlling the working state of a circulating water pump as described in any one of claims 1 to 7 is implemented.

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