Rotating speed determination method and device, storage medium and electronic device

Abstract

The invention discloses a rotating speed determination method and device, a storage medium and an electronic device. The rotating speed determination method comprises the steps that the predicted heat load of a target area is determined, and the temperature difference between the water supply temperature and the water return temperature of the target area is determined; according to the predicted thermal load and the temperature difference, target water flow to be conveyed to the target area by a circulating pump is determined; the target pressure difference of the target area is determined according to the target water flow, the target rotating speed of the circulating pump is determined according to the target pressure difference, and the target pressure difference is the difference value of the water supply pressure and the water return pressure of the target area. By the adoption of the technical scheme, the problem that in the related technology, the rotating speed of the circulating pump in the heat supply system cannot be accurately controlled is solved.

Description

Technical Field

[0001] The present application relates to the field of heating, and in particular to a method and device for determining a rotation speed, a storage medium and an electronic device. Background Art

[0002] In traditional heating systems, the speed of the circulating pump is usually controlled by a fixed frequency or based on a simple schedule, which has significant limitations. Since the heating demand changes with the season, time and even user habits, the fixed speed is difficult to adapt to the needs under different working conditions, resulting in energy waste and low heating efficiency. Especially in large-scale heating networks, the heat demand of each user end varies significantly, and traditional control methods are difficult to achieve accurate matching, which often leads to hydraulic imbalance problems such as overheating at the near end and insufficient at the far end, seriously affecting the overall performance of the heating system and user experience.

[0003] In addition, the traditional heating system is slow to respond to sudden changes in demand or system failures, and the control accuracy is insufficient, which not only increases the operating cost of the system, but may also cause poor heating or equipment damage due to untimely adjustment, reducing the safety and reliability of the system. Therefore, how to accurately control the speed of the circulation pump to adapt to the ever-changing heat demand in the heating system has become a technical problem that needs to be solved urgently.

[0004] With regard to the problem in the related art that the rotation speed of the circulation pump in the heating system cannot be accurately controlled, no effective solution has been proposed so far.

[0005] Therefore, it is necessary to improve the related technology to overcome the above-mentioned defects in the related technology. Summary of the invention

[0006] The embodiments of the present application provide a method and device for determining a rotation speed, a storage medium, and an electronic device to at least solve the problem in the related art that the rotation speed of a circulation pump in a heating system cannot be accurately controlled.

[0007] According to one aspect of an embodiment of the present application, a method for determining a rotational speed is provided, comprising: determining a predicted heat load of a target area, and determining a temperature difference between a water supply temperature and a return water temperature of the target area; determining a target water flow rate to be delivered by a circulating pump to the target area according to the predicted heat load and the temperature difference; determining a target pressure difference of the target area according to the target water flow rate, and determining a target rotational speed of the circulating pump according to the target pressure difference, wherein the target pressure difference is a difference between a water supply pressure and a return water pressure of the target area.

[0008] In an exemplary embodiment, determining a predicted heat load of a target area includes: obtaining first historical data of the target area, wherein the first historical data includes: environmental data, and a heat load corresponding to the environmental data; establishing a prediction model based on the historical data; obtaining current environmental data of the target area, and inputting the current environmental data into the prediction model so that the prediction model outputs the predicted heat load.

[0009] In an exemplary embodiment, the target pressure difference of the target area is determined according to the target water flow, including: obtaining a set of historical water flow rates delivered by the circulation pump to the target area, and a historical pressure difference corresponding to each historical water flow rate in the set of historical water flow rates through a flow meter, wherein the pressure difference is the difference between a historical water supply pressure and a historical return water pressure of the target area; determining a functional relationship between water flow rate and pressure difference according to each historical water flow rate and a historical pressure difference corresponding to each historical water flow rate; and determining the target pressure difference corresponding to the target water flow rate according to the functional relationship.

[0010] In an exemplary embodiment, the target speed of the circulation pump is determined according to the target pressure difference, including: obtaining the current pressure difference of the target area through a pressure difference sensor, wherein the current pressure difference is the difference between the current water supply pressure and the current return water pressure of the target area; determining the target error between the target pressure difference and the current pressure difference; calculating the proportional term, differential term and integral term corresponding to the target error according to a closed-loop control algorithm; and determining the target speed of the circulation pump according to the proportional term, differential term and integral term.

[0011] In an exemplary embodiment, after determining the target speed of the circulation pump according to the target pressure difference, the method further includes: obtaining a current heat load of the target area, and determining a first size relationship between the current heat load and the predicted heat load; when the first size relationship indicates that the current heat load is greater than the predicted heat load, reducing the target speed of the circulation pump to a first speed; when the first size relationship indicates that the current heat load is less than the predicted heat load, increasing the target speed of the circulation pump to a second speed.

[0012] In an exemplary embodiment, after determining the target speed of the circulation pump according to the target pressure difference, the method further includes: acquiring the current water supply temperature of the target area, and confirming a second size relationship between the current water supply temperature and a preset water supply temperature; when the second size relationship indicates that the current water supply temperature is greater than the preset water supply temperature, reducing the opening of the regulating valve to reduce the water flow from the heat source to the heat exchanger; when the second size relationship indicates that the current water supply temperature is less than the preset water supply temperature, increasing the opening of the regulating valve to increase the water flow from the heat source to the heat exchanger.

[0013] According to another aspect of an embodiment of the present application, a rotational speed determination device is also provided, including: a first determination module, used to determine the predicted heat load of a target area, and to determine the temperature difference between the supply water temperature and the return water temperature of the target area; a second determination module, used to determine the target water flow rate to be delivered by the circulating pump to the target area according to the predicted heat load and the temperature difference; a third determination module, used to determine the target pressure difference of the target area according to the target water flow rate, and to determine the target rotational speed of the circulating pump according to the target pressure difference, wherein the target pressure difference is the difference between the supply water pressure and the return water pressure of the target area.

[0014] According to another aspect of the embodiments of the present application, a computer-readable storage medium is provided, in which a computer program is stored, wherein the computer program is configured to execute the above-mentioned method for determining the rotation speed when running.

[0015] According to another aspect of the embodiments of the present application, an electronic device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the method for determining the rotational speed through the computer program.

[0016] According to another aspect of the present application, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the steps in any one of the above method embodiments are implemented.

[0017] Through the present application, the predicted heat load of the target area is determined, and the temperature difference between the water supply temperature and the return water temperature of the target area is determined; the target water flow rate to be delivered by the circulating pump to the target area is determined according to the predicted heat load and the temperature difference; the target pressure difference of the target area is determined according to the target water flow rate, and the target speed of the circulating pump is determined according to the target pressure difference, wherein the target pressure difference is the difference between the water supply pressure and the return water pressure of the target area, and in the embodiment of the present application, according to the predicted heat load, the system calculates the supply and return water temperature difference of the target area, based on the predicted heat load and the calculated temperature difference, the system further determines the water flow rate to be delivered by the circulating pump, by analyzing the target water flow rate, the system can determine the pressure difference between the water supply and return water that should be maintained in the target area, and determine the speed of the circulating pump according to the pressure difference value. Thus, the problem that the speed of the circulating pump in the heating system cannot be accurately controlled in the related art is solved, and the speed control accuracy of the speed of the traditional circulating pump is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 It is a hardware structure block diagram of a computer terminal of a method for determining a rotation speed according to an embodiment of the present application;

[0021] Figure 2 is a flow chart of a method for determining a rotation speed according to an embodiment of the present application (I);

[0022] Figure 3 is a flow chart (II) of the heating system control according to an embodiment of the present application;

[0023] Figure 4 It is a structural block diagram of a rotation speed determination device according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] The method embodiments provided in the embodiments of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a computer terminal as an example, Figure 1 FIG. 1 is a hardware structure block diagram of a computer terminal of a method for determining a rotation speed according to an embodiment of the present application. Figure 1 As shown, the computer terminal may include one or more ( Figure 1 Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a microprocessor or a processing device such as a programmable logic device (Field Programmable Gate Array, FPGA)) and a memory 104 for storing data, wherein the above-mentioned computer terminal may also include a transmission device 106 and an input and output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the above-mentioned computer terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations shown.

[0027] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the method for determining the rotational speed in the embodiment of the present application. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, to implement the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the computer terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0028] The transmission device 106 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of a computer terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0029] In this embodiment, a method for determining a rotation speed is provided. Figure 2 is a flow chart of a method for determining a rotation speed according to an embodiment of the present application, such as Figure 2 As shown, the process includes the following steps:

[0030] Step S202: determining a predicted heat load of a target area, and determining a temperature difference between a supply water temperature and a return water temperature of the target area;

[0031] It should be noted that step S202 uses historical data, meteorological information and intelligent algorithms to predict the heat load demand of the target area in the future.

[0032] Step S204: determining a target water flow rate to be transported by a circulation pump to the target area according to the predicted heat load and the temperature difference;

[0033] Based on the predicted heat load and calculated temperature difference, the system further determines the water flow rate to be delivered by the circulation pump, ensuring that the system can provide heat that matches the user's needs, avoiding the situation of "a big horse pulling a small cart" or energy waste, and improving energy efficiency.

[0034] It should be noted that the target water flow rate = predicted heat load / (specific heat capacity * temperature difference).

[0035] Step S206: determining a target pressure difference of the target area according to the target water flow rate, and determining a target speed of the circulation pump according to the target pressure difference, wherein the target pressure difference is the difference between the water supply pressure and the return water pressure of the target area.

[0036] In order to maintain the target water flow, the system needs to determine the target pressure difference in the target area. The pressure difference between the supply water and the return water is calculated based on the target water flow, ensuring hydraulic balance and preventing hydraulic imbalance.

[0037] According to the target pressure difference, the system calculates the target speed of the circulation pump. By accurately adjusting the running speed of the circulation pump, the water flow is finely controlled, ensuring that the heating system can operate efficiently and stably, while reducing energy consumption and improving the economy and environmental protection of the system.

[0038] Through the above steps, the predicted heat load of the target area is determined, and the temperature difference between the water supply temperature and the return water temperature of the target area is determined; the target water flow rate to be transported by the circulating pump to the target area is determined according to the predicted heat load and the temperature difference; the target pressure difference of the target area is determined according to the target water flow rate, and the target speed of the circulating pump is determined according to the target pressure difference, wherein the target pressure difference is the difference between the water supply pressure and the return water pressure of the target area, and in the embodiment of the present application, according to the predicted heat load, the system calculates the supply and return water temperature difference of the target area, and based on the predicted heat load and the calculated temperature difference, the system further determines the water flow rate to be transported by the circulating pump, and by analyzing the target water flow rate, the system can determine the pressure difference between the supply water and the return water that should be maintained in the target area, and determine the speed of the circulating pump according to the pressure difference value. This solves the problem in the related art that the speed of the circulating pump in the heating system cannot be accurately controlled, and improves and significantly improves the control accuracy of the speed of the traditional circulating pump.

[0039] In an exemplary embodiment, determining a predicted heat load of a target area includes: obtaining first historical data of the target area, wherein the first historical data includes: environmental data, and a heat load corresponding to the environmental data; establishing a prediction model based on the historical data; obtaining current environmental data of the target area, and inputting the current environmental data into the prediction model so that the prediction model outputs the predicted heat load.

[0040] First, first historical data related to the target area is extracted from a database or historical records, which usually include environmental data (such as outdoor temperature, humidity, wind speed, etc.) and corresponding heat load data, reflecting the change of heat demand under different environmental conditions.

[0041] Data collection includes but is not limited to: completed through various methods such as IoT sensors, user feedback, weather forecast interfaces, etc. to ensure the accuracy and real-time nature of the data.

[0042] The acquired first historical data is processed and modeled using machine learning or statistical analysis methods, such as regression analysis, neural network, support vector machine, etc.

[0043] The model building process includes but is not limited to data preprocessing (cleaning, normalization), feature selection (identifying key environmental parameters that affect heat load), model training (adjusting algorithm parameters using historical data) and model validation (evaluating the prediction accuracy of the model through the holdout method or cross-validation method).

[0044] Finally, the current environmental data of the target area is obtained in real time or regularly from IoT sensors, weather stations or other data sources, including outdoor temperature, humidity, wind speed, light intensity, etc. The acquisition of current environmental data is achieved through wireless communication, wired connection or direct reading of embedded sensors, ensuring the real-time and reliability of the data.

[0045] The current environmental data is input into the prediction model established earlier. The model will calculate the future heat load forecast value of the target area based on the characteristics of the input data, combined with its trained patterns and parameters. The output predicted heat load can be a forecast of heat demand in the next few hours, a day, or longer. It should be noted that the specific time range depends on the model settings and application requirements.

[0046] In order to improve the accuracy and practicality of the prediction, the prediction model may also include consideration of additional information such as seasonal trends, holiday effects, user behavior patterns, etc., to more comprehensively reflect the changing patterns of heat load.

[0047] Through the above steps, the intelligent heating system can establish and use a prediction model to accurately predict future heat load demand based on the environmental conditions and historical heat load data of the target area. This prediction capability provides a basis for the dynamic regulation of the system, enabling the system to adjust the heating strategy in advance, including the water flow and speed control of the circulation pump, to meet user needs in a more efficient and energy-saving way, avoiding the problems of delayed response and overheating, and significantly improving the operating efficiency of the heating system and user satisfaction.

[0048] In an exemplary embodiment, the target pressure difference of the target area is determined according to the target water flow, including: obtaining a set of historical water flow rates delivered by the circulation pump to the target area, and a historical pressure difference corresponding to each historical water flow rate in the set of historical water flow rates through a flow meter, wherein the pressure difference is the difference between a historical water supply pressure and a historical return water pressure of the target area; determining a functional relationship between water flow rate and pressure difference according to each historical water flow rate and a historical pressure difference corresponding to each historical water flow rate; and determining the target pressure difference corresponding to the target water flow rate according to the functional relationship.

[0049] The actual water flow data delivered by the circulation pump to the target area in the past period of time is extracted from the storage records of the flow meter. These historical water flow data constitute a set, which reflects the working status of the circulation pump and the changes in water demand in the target area in a certain historical period.

[0050] At the same time, historical differential pressure information corresponding to the above historical water flow data is collected. The differential pressure is the difference between the water supply pressure and the return water pressure. The historical differential pressure data can be obtained through the records of the differential pressure sensor, or calculated based on the historical water supply pressure and return water pressure data. The historical differential pressure information is used together with the historical water flow data to analyze the relationship between water flow and differential pressure.

[0051] After collecting historical water flow and historical pressure difference data, the system uses data processing and statistical analysis methods, such as linear regression, nonlinear fitting, machine learning algorithms (such as support vector machines, neural networks), etc., to determine the functional relationship between water flow and pressure difference. The process of establishing this relationship includes but is not limited to: data cleaning, feature selection, model training and verification steps to ensure that the established function can accurately reflect the dynamic change law between the two. The established functional relationship can be expressed as a curve or a set of mathematical expressions to predict the target pressure difference value that the circulation pump should maintain under a given water flow.

[0052] When the functional relationship between the water flow rate and the pressure difference is determined, the functional relationship is input according to the target water flow rate currently calculated to calculate the target pressure difference.

[0053] Through the above steps, the system can accurately analyze and predict the pressure difference that the circulation pump should maintain under a specific water flow rate based on the historical operation data of the target area, thereby achieving precise control of the circulation pump. This process not only improves the operating efficiency of the heating system, but also ensures that the circulation pump can avoid unnecessary energy consumption and hydraulic imbalance while meeting the target water flow demand, providing strong support for the stable operation of the heating system and energy conservation and emission reduction.

[0054] In an exemplary embodiment, the target speed of the circulation pump is determined according to the target pressure difference, including: obtaining the current pressure difference of the target area through a pressure difference sensor, wherein the current pressure difference is the difference between the current water supply pressure and the current return water pressure of the target area; determining the target error between the target pressure difference and the current pressure difference; calculating the proportional term, differential term and integral term corresponding to the target error according to a closed-loop control algorithm; and determining the target speed of the circulation pump according to the proportional term, differential term and integral term.

[0055] The pressure difference sensor monitors the pipe network pressure in the target area in real time to obtain the current supply pressure and return pressure measurement values. Based on these two measurement values, the system calculates the current pressure difference, that is, the real-time difference between the supply pressure and the return pressure.

[0056] The target pressure difference calculated based on the prediction model is compared with the current pressure difference obtained by the pressure difference sensor, and the difference between the two is calculated, that is, the target error. The target error reflects the deviation between the current state of the system and the expected target state.

[0057] Closed-loop control algorithms, such as the PID (Proportional-Integral-Derivative) control algorithm, use the target error to calculate the values ​​of the proportional term (P), the integral term (I), and the differential term (D). The proportional term (P) is directly proportional to the target error and reflects the immediate impact of the error; the integral term (I) accumulates the change of the target error over time and is used to eliminate steady-state errors; the differential term (D) reflects the rate of change of the target error, which helps predict future trends and reduce overshoot during dynamic response.

[0058] The proportional, differential, and integral values ​​calculated by the PID algorithm are weighted and summed to form a control signal. This signal is used to adjust the speed of the circulation pump to minimize the target error. The control signal will pass through the inverter to adjust the power supply frequency of the circulation pump motor, thereby changing the speed of the pump. The adjusted circulation pump speed will directly affect the water supply flow and pressure, and then affect the pressure difference of the entire heating system. Through this closed-loop control mechanism, the system can adjust the operating status of the circulation pump in real time to ensure that the pressure difference of the pipe network is stable near the target value, and maintain the efficient and stable operation of the heating system even when user demand or environmental conditions change.

[0059] In an exemplary embodiment, after determining the target speed of the circulation pump according to the target pressure difference, the method further includes: obtaining a current heat load of the target area, and determining a first size relationship between the current heat load and the predicted heat load; when the first size relationship indicates that the current heat load is greater than the predicted heat load, reducing the target speed of the circulation pump to a first speed; when the first size relationship indicates that the current heat load is less than the predicted heat load, increasing the target speed of the circulation pump to a second speed.

[0060] In the embodiment of the present application, the current heat load information of the target area is obtained in real time from data sources such as heat metering equipment, temperature sensors, and user feedback systems. The current heat load is the actual amount of heat consumed by the user, reflecting the heating demand of the system at the current moment.

[0061] The current heat load obtained in real time is compared with the predicted heat load based on historical data and environmental prediction models to determine the size relationship between the two. The comparison result indicates whether the current heat load demand of the system is consistent with the predicted value, and the specific deviation direction of the demand.

[0062] If the system detects that the current heat load is greater than the predicted value, it means that the system's heat supply exceeds demand, or there is local overheating. To avoid energy waste and overheating problems, the system will automatically adjust the target speed of the circulation pump, reduce the supply and return water flow by reducing the speed to the first speed, thereby reducing the heat transfer and making the system run in a more economical and more in line with actual needs. This adjustment process usually has a delay, for example, after 5 minutes, to prevent frequent small fluctuations from causing unnecessary adjustments.

[0063] If the current heat load is less than the predicted value, it means that the system is not providing enough heat and needs to increase the heat supply to meet user needs. The system will increase the target speed of the circulation pump to the second speed, increase the supply and return water flow, and increase heat transfer, thereby improving the heating efficiency. Similarly, this adjustment also has a delay mechanism to avoid unnecessary impact on the system.

[0064] Through this feedback regulation mechanism, the heating system can intelligently adjust the speed of the circulation pump according to the comparison between the real-time heat load and the predicted heat load, ensuring that the system can achieve efficient use of energy while meeting user needs. This process reflects the heating system's ability to respond to dynamic demand changes, and improves the system's operating efficiency and user satisfaction through intelligent control technology.

[0065] In an exemplary embodiment, after determining the target speed of the circulation pump according to the target pressure difference, the method further includes: acquiring the current water supply temperature of the target area, and confirming a second size relationship between the current water supply temperature and a preset water supply temperature; when the second size relationship indicates that the current water supply temperature is greater than the preset water supply temperature, reducing the opening of the regulating valve to reduce the water flow from the heat source to the heat exchanger; when the second size relationship indicates that the current water supply temperature is less than the preset water supply temperature, increasing the opening of the regulating valve to increase the water flow from the heat source to the heat exchanger.

[0066] In the embodiment of the present application, the water supply temperature of the target area is monitored in real time by temperature sensors installed in the pipe network. These sensors can provide continuous temperature data to reflect the real-time status of the heating system. The current water supply temperature obtained from the sensor is compared with the preset water supply temperature to determine the size relationship between the two. The preset water supply temperature is an ideal water supply temperature pre-set based on user needs, environmental conditions and other factors. The goal of the system is to make the actual water supply temperature as close to the preset value as possible through intelligent control.

[0067] If the current water supply temperature is detected to be higher than the preset value, it means that the heating intensity is too high and exceeds the actual demand of the target area. In order to reduce the water supply temperature, the system will automatically reduce the opening of the regulating valve and reduce the water flow from the heat source to the heat exchanger. Reducing the water flow can reduce the transmission of heat energy and help reduce the water supply temperature to return it to the preset range.

[0068] If the current water supply temperature is lower than the preset value, it means that the heating intensity is insufficient and the heat supply needs to be increased. The system will increase the opening of the regulating valve, increase the water flow from the heat source to the heat exchanger, and improve the efficiency of heat energy transmission, thereby increasing the water supply temperature to ensure that it reaches or is close to the preset value. This process also needs to take into account the stability and response speed of the system to avoid over-adjustment.

[0069] Through this feedback regulation mechanism, the heating system can intelligently adjust the opening of the regulating valve according to the comparison between the real-time water supply temperature and the preset value, and control the water flow from the heat source to the heat exchanger, thereby achieving precise control of the water supply temperature. This temperature control not only ensures the heating quality of users, but also optimizes energy utilization through intelligent technology, avoids overheating or underheating, and improves the economy and environmental protection of system operation.

[0070] Obviously, the embodiments described above are only some embodiments of the present application, not all embodiments. In order to better understand the above method, the above process is described below in conjunction with the embodiments, but it is not intended to limit the technical solutions of the embodiments of the present application, specifically:

[0071] The embodiment of the present application provides a heating system control scheme, which aims to achieve both high efficiency and energy saving and user comfort through intelligent and dynamic flow and temperature control. The embodiment of the present application effectively controls the flow of the primary network by accurately adjusting the opening of the primary regulating valve, and then fine-tunes the water supply temperature of the secondary network to ensure on-demand distribution of heat. Using advanced load forecasting models, combined with historical data and real-time meteorological information, the system can predictably adjust the supply and return water temperature difference, achieve accurate heat supply, avoid energy waste, and achieve the goal of efficient utilization.

[0072] like Figure 3 As shown in the figure, frequency converters and circulating pumps are introduced into the heating system of each building. According to the specific heat demand of the building, the frequency converter dynamically adjusts the speed of the circulating pump, thereby intelligently controlling the flow and pressure to ensure accurate and balanced heat supply, eliminating the common hydraulic imbalance problem in traditional heating systems. The seamless connection between the front-end and terminal control systems, with the help of wireless communication technology, realizes the centralized monitoring and decentralized adjustment of heating equipment in multiple buildings.

[0073] Combining historical operation data with advanced intelligent algorithms, the system can accurately predict the heating load of the building. Based on this, the system continuously monitors changes in key parameters through the pressure difference sensors, temperature sensors and flow meters installed in the heating systems of each building. Once the deviation of pressure difference, temperature or flow is detected, the intelligent control system will respond immediately and automatically adjust the speed of the variable frequency circulation pump to maintain the pressure difference and flow balance between buildings and the entire heating network, ensuring the efficient and stable operation of the system.

[0074] In the circulating water system, a differential pressure sensor is installed in the circulating water system to monitor the pressure difference changes of the system in real time. The most unfavorable circuit is set as the lower limit, and the safety differential pressure is set as the upper limit. A reasonable differential pressure is set. When the monitored differential pressure exceeds the set range, the speed of the circulating pump is automatically adjusted. A flow meter is installed in the building pipeline to determine the linear relationship between differential pressure and flow.

[0075] The constant temperature difference control of the secondary water supply further improves the intelligence level of the heating system. The system sets the constant temperature target of the secondary water supply according to the heat load and total flow predicted by the heat exchange station. Once the water supply temperature deviates from the set value, the system will quickly adjust the opening of the primary side electric regulating valve to ensure the stability of the secondary water supply temperature. When there is a deviation between the actual heat load and the predicted heat load, the system uses a delay mechanism to intelligently adjust the pressure difference set value of the building to maintain the balance and stability of the heating supply and avoid energy loss caused by excessive adjustment.

[0076] For example, when the actual heat load of a building is less than the predicted heat load, the pressure difference setting value of the building will be automatically adjusted to increase after a delay of 5 minutes; when the actual heat load of a building is greater than the predicted heat load, the pressure difference setting value of the building will be automatically adjusted to decrease after a delay of 5 minutes.

[0077] The embodiment of this application constructs a double closed-loop heating control system, which uses the predicted heat load as the cornerstone of feedforward control, supplemented by precise pressure difference control and temperature difference control, to achieve intelligent regulation of the two-network distributed variable frequency heating system. It not only significantly improves energy utilization efficiency, but also greatly optimizes the user's heating experience, setting a new benchmark for the design and management of modern urban heating systems.

[0078] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of each embodiment of the present application.

[0079] In this embodiment, a device for determining a rotation speed is also provided, and the device is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made are not repeated here. As used below, the term "module" can implement a combination of software and / or hardware of a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0080] Figure 4 is a structural block diagram of a device for determining a rotation speed according to an embodiment of the present application, the device comprising:

[0081] A first determination module 42 is used to determine the predicted heat load of the target area and the temperature difference between the supply water temperature and the return water temperature of the target area;

[0082] A second determination module 44 is used to determine a target water flow rate to be transported by a circulation pump to the target area according to the predicted heat load and the temperature difference;

[0083] The third determination module 46 is used to determine the target pressure difference of the target area according to the target water flow rate, and determine the target speed of the circulation pump according to the target pressure difference, wherein the target pressure difference is the difference between the water supply pressure and the return water pressure of the target area.

[0084] Through the above device, the predicted heat load of the target area is determined, and the temperature difference between the water supply temperature and the return water temperature of the target area is determined; the target water flow rate to be transported by the circulating pump to the target area is determined according to the predicted heat load and the temperature difference; the target pressure difference of the target area is determined according to the target water flow rate, and the target speed of the circulating pump is determined according to the target pressure difference, wherein the target pressure difference is the difference between the water supply pressure and the return water pressure of the target area, and in the embodiment of the present application, according to the predicted heat load, the system calculates the supply and return water temperature difference of the target area, based on the predicted heat load and the calculated temperature difference, the system further determines the water flow rate to be transported by the circulating pump, by analyzing the target water flow rate, the system can determine the pressure difference between the supply water and the return water that should be maintained in the target area, and determine the speed of the circulating pump according to the pressure difference value. Thus, the problem that the speed of the circulating pump in the heating system cannot be accurately controlled in the related art is solved, and the speed control accuracy of the speed of the traditional circulating pump is significantly improved.

[0085] In an exemplary embodiment, the first determination module 42 is used to obtain first historical data of the target area, wherein the first historical data includes: environmental data, and a heat load corresponding to the environmental data; establishing a prediction model based on the historical data; obtaining current environmental data of the target area, and inputting the current environmental data into the prediction model so that the prediction model outputs the predicted heat load.

[0086] In an exemplary embodiment, the third determination module 46 is used to obtain, through a flow meter, a set of historical water flow rates delivered by the circulation pump to the target area, and a historical pressure difference corresponding to each historical water flow rate in the set of historical water flow rates, wherein the pressure difference is the difference between a historical water supply pressure and a historical return water pressure of the target area; determine a functional relationship between water flow rate and pressure difference based on each historical water flow rate and a historical pressure difference corresponding to each historical water flow rate; and determine a target pressure difference corresponding to the target water flow rate based on the functional relationship.

[0087] In an exemplary embodiment, the third determination module 46 is used to obtain the current pressure difference of the target area through a pressure difference sensor, wherein the current pressure difference is the difference between the current water supply pressure and the current return water pressure of the target area; determine the target error between the target pressure difference and the current pressure difference; calculate the proportional term, differential term and integral term corresponding to the target error according to a closed-loop control algorithm; and determine the target speed of the circulation pump according to the proportional term, differential term and integral term.

[0088] In an exemplary embodiment, the above-mentioned device also includes: an adjustment module, which is used to obtain the current heat load of the target area, and determine a first size relationship between the current heat load and the predicted heat load; when the first size relationship indicates that the current heat load is greater than the predicted heat load, reduce the target speed of the circulation pump to a first speed; when the first size relationship indicates that the current heat load is less than the predicted heat load, increase the target speed of the circulation pump to a second speed.

[0089] In an exemplary embodiment, a regulating module is used to obtain the current water supply temperature of the target area and confirm a second size relationship between the current water supply temperature and a preset water supply temperature; when the second size relationship indicates that the current water supply temperature is greater than the preset water supply temperature, the opening of the regulating valve is reduced to reduce the water flow from the heat source to the heat exchanger; when the second size relationship indicates that the current water supply temperature is less than the preset water supply temperature, the opening of the regulating valve is increased to increase the water flow from the heat source to the heat exchanger.

[0090] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above method embodiments when running.

[0091] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0092] S1, determining a predicted heat load of a target area, and determining a temperature difference between a supply water temperature and a return water temperature of the target area;

[0093] S2, determining a target water flow rate to be transported by a circulation pump to the target area according to the predicted heat load and the temperature difference;

[0094] S3, determining a target pressure difference of the target area according to the target water flow, and determining a target speed of the circulation pump according to the target pressure difference, wherein the target pressure difference is a difference between a water supply pressure and a return water pressure of the target area.

[0095] In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to, various media that can store computer programs, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0096] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail herein.

[0097] An embodiment of the present application further provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0098] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program:

[0099] S1, determining a predicted heat load of a target area, and determining a temperature difference between a supply water temperature and a return water temperature of the target area;

[0100] S2, determining a target water flow rate to be transported by a circulation pump to the target area according to the predicted heat load and the temperature difference;

[0101] S3, determining a target pressure difference of the target area according to the target water flow, and determining a target speed of the circulation pump according to the target pressure difference, wherein the target pressure difference is a difference between a water supply pressure and a return water pressure of the target area.

[0102] In an exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0103] An embodiment of the present application further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps in any one of the above method embodiments are implemented.

[0104] An embodiment of the present application further provides another computer program product, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0105] An embodiment of the present application also provides a computer program, which includes computer instructions, which are stored in a computer-readable storage medium; a processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the steps in any one of the above method embodiments.

[0106] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail herein.

[0107] Obviously, those skilled in the art should understand that the above modules or steps of the present application can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order from that herein, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.

[0108] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for determining a rotation speed, characterized in that: include: Determining a predicted heat load of a target area, and determining a temperature difference between a supply water temperature and a return water temperature of the target area; Determining a target water flow rate to be delivered by a circulation pump to the target area according to the predicted heat load and the temperature difference; The target pressure difference of the target area is determined according to the target water flow rate, and the target speed of the circulation pump is determined according to the target pressure difference, wherein the target pressure difference is the difference between the water supply pressure and the return water pressure of the target area.

2. The method according to claim 1, characterized in that Determine the predicted heat load for the target area, including: Acquire first historical data of the target area, wherein the first historical data includes: environmental data, and a heat load corresponding to the environmental data; Establishing a prediction model based on the historical data; The current environmental data of the target area is acquired, and the current environmental data is input into the prediction model so that the prediction model outputs the predicted heat load.

3. The method according to claim 1, characterized in that Determining a target pressure difference of the target area according to the target water flow rate includes: Obtaining, by means of a flow meter, a historical water flow set delivered by the circulation pump to the target area, and a historical pressure difference corresponding to each historical water flow in the historical water flow set, wherein the pressure difference is a difference between a historical water supply pressure and a historical return water pressure of the target area; Determine a functional relationship between water flow and pressure difference according to each historical water flow and a historical pressure difference corresponding to each historical water flow; The target pressure difference corresponding to the target water flow is determined according to the functional relationship.

4. The method according to claim 1, characterized in that: Determining a target speed of the circulating pump according to the target pressure difference includes: Acquire the current pressure difference of the target area through a pressure difference sensor, wherein the current pressure difference is the difference between the current water supply pressure and the current return water pressure of the target area; determining a target error between the target pressure difference and the current pressure difference; Calculate the proportional term, differential term and integral term corresponding to the target error according to a closed-loop control algorithm; The target rotation speed of the circulation pump is determined according to the proportional term, the differential term and the integral term.

5. The method according to claim 1, characterized in that After determining the target speed of the circulation pump according to the target pressure difference, the method further includes: Acquiring a current heat load of the target area, and determining a first magnitude relationship between the current heat load and the predicted heat load; When the first magnitude relationship indicates that the current heat load is greater than the predicted heat load, reducing the target speed of the circulation pump to a first speed; When the first magnitude relationship indicates that the current heat load is less than the predicted heat load, the target speed of the circulation pump is increased to a second speed.

6. The method according to claim 1, characterized in that After determining the target speed of the circulation pump according to the target pressure difference, the method further includes: Acquiring a current water supply temperature of the target area, and confirming a second magnitude relationship between the current water supply temperature and a preset water supply temperature; When the second magnitude relationship indicates that the current water supply temperature is greater than the preset water supply temperature, reducing the opening of the regulating valve to reduce the water flow from the heat source to the heat exchanger; When the second magnitude relationship indicates that the current water supply temperature is lower than the preset water supply temperature, the opening of the regulating valve is increased to increase the water flow from the heat source to the heat exchanger.

7. A device for determining a rotation speed, characterized in that: include: A first determination module is used to determine the predicted heat load of the target area and determine the temperature difference between the supply water temperature and the return water temperature of the target area; A second determination module is used to determine a target water flow rate to be transported by a circulation pump to the target area according to the predicted heat load and the temperature difference; The third determination module is used to determine the target pressure difference of the target area according to the target water flow rate, and determine the target speed of the circulation pump according to the target pressure difference, wherein the target pressure difference is the difference between the water supply pressure and the return water pressure of the target area.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein the program executes the method according to any one of claims 1 to 6 when executed.

9. An electronic device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to execute the method according to any one of claims 1 to 6 through the computer program.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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