Water pump adjusting system and method for heat supply unit

Abstract

The invention provides a water pump adjusting system and method for a heat supply unit, and belongs to the technical field of heat supply system control, and the water pump adjusting system comprises a model construction module which obtains historical and real-time load data of the heat supply unit, and then constructs a load demand model; the target determining module is used for determining a heat efficiency target in the heat exchange process according to the load demand model and a preset heat efficiency requirement; the state determination module monitors heat exchange data of the heat supply unit in real time so as to determine heat exchange efficiency, and determines the working state of the heat supply unit based on the heat exchange efficiency and a heat efficiency target; the state judgment module measures the water flow of the water pump in real time and determines whether the water flow meets the thermal efficiency target or not by combining the working state of the heat supply unit; and if not, the diameter adjusting module adjusts the impeller diameter of the water pump based on a preset method until the thermal efficiency target is reached. The energy consumption is effectively reduced; and the reliability and stability of the system are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heating system control, and in particular to a water pump regulating system and method for a heating unit. Background Art

[0002] With the continuous increase in heating demand, the efficiency and stability of the heating system are particularly important. The water pump regulation in the heating unit plays a key role in maintaining heating efficiency and reducing energy consumption. By reasonably adjusting the operating parameters of the water pump, the overall performance of the heating system can be effectively improved.

[0003] In the prior art, a fixed flow rate or a simple water pump adjustment method is usually used to control the water flow rate of the heating unit, but this type of adjustment method is difficult to respond to changes in the heating load in real time. In addition, due to the lack of real-time monitoring of heat exchange efficiency, traditional methods are often difficult to accurately match dynamic load requirements, resulting in low thermal efficiency and high energy consumption. Based on the above-mentioned prior art solutions, the prior art is difficult to optimize the thermal efficiency of the heating unit while meeting different load requirements, and lacks a method for dynamically adjusting the diameter of the water pump impeller according to the real-time load conditions, resulting in difficulty in achieving optimal heating efficiency.

[0004] Therefore, the present invention provides a water pump regulating system and method for a heating unit. Summary of the invention

[0005] The present invention provides a water pump regulation system and method for a heating unit, which is used to dynamically adjust the water pump impeller diameter by building a load demand model in real time, accurately matching the changing demand of the heating load, thereby improving the heat exchange efficiency. Based on the real-time monitored heat exchange data and water flow status, it ensures that the water pump flow meets the thermal efficiency target, making the operation of the heating unit more efficient and energy-saving, effectively reducing energy consumption and improving the reliability and stability of the system.

[0006] The present invention provides a water pump regulating system for a heating unit, comprising:

[0007] Model building module: obtain historical and real-time load data of heating units and then build a load demand model;

[0008] Target determination module: Determine the thermal efficiency target of the heat exchange process according to the load demand model and preset thermal efficiency requirements;

[0009] State determination module: monitors the heat exchange data of the heating unit in real time to determine the heat exchange efficiency, and determines the working state of the heating unit based on the heat exchange efficiency and thermal efficiency target;

[0010] State determination module: measures the water flow of the water pump in real time, and determines whether the water flow meets the thermal efficiency target in combination with the working state of the heating unit;

[0011] Diameter adjustment module: If not met, the impeller diameter of the water pump is adjusted based on the preset method until the thermal efficiency target is reached.

[0012] The present invention provides a water pump regulating system for a heating unit, a target determination module, comprising:

[0013] Collect historical load data and real-time load data of heating units based on preset tools;

[0014] Build a load demand model based on historical load data, real-time load data and preset prediction algorithms.

[0015] The present invention provides a water pump regulating system for a heating unit, a target determination module, comprising:

[0016] Curve drawing unit: based on the load demand model and the preset thermal efficiency requirements, draw the relationship curve between load and thermal efficiency;

[0017] Target creation unit: creates a heat exchange efficiency target table based on the relationship curve between load and thermal efficiency;

[0018] Level determination unit: matches the real-time load data with the load demand model to determine the real-time operating load level of the heating unit;

[0019] Target extraction unit: extracts the corresponding heat exchange efficiency target from the heat exchange efficiency target table according to the real-time operating load level.

[0020] The present invention provides a water pump regulating system for a heating unit, a state determination module, comprising:

[0021] Data monitoring unit: monitors the heat exchange data of the heating unit based on preset monitoring tools;

[0022] Efficiency determination unit: Determine the heat exchange efficiency based on the heat exchange data of the heating unit:

[0023]

[0024] Among them, γ is the heat exchange efficiency of the heat exchanger of the heating unit, T env is the ambient temperature of the heat exchanger of the heating unit, T in is the temperature of the fluid when it enters the heat exchanger, C p is the specific heat capacity of the fluid, U is the heat transfer coefficient of the heat exchanger of the heating unit, A is the surface area of ​​the heat exchanger of the heating unit,

[0025] Where, ΔT im is the temperature difference inside the heat exchanger of the heating unit:

[0026]

[0027] Among them, T out is the temperature of the fluid when it enters the heat exchanger;

[0028] State determination unit: determines the deviation between the heat exchange efficiency and the heat exchange efficiency target, determines the preset deviation range where the deviation is located based on the preset deviation range-state data table, and then determines the working state corresponding to the preset deviation range.

[0029] The present invention provides a water pump regulating system for a heating unit, a state determination module, comprising:

[0030] Flow collection unit: A preset flow monitoring device is installed at a preset location of the heating unit, and real-time flow data is collected to obtain the current flow;

[0031] Flow extraction unit: obtains the real-time working condition of the heating unit based on the preset working condition acquisition device, and obtains the current working condition. At the same time, extracts the expected flow under the current working condition in the load demand model;

[0032] Deviation analysis unit: Determines the deviation between the current flow rate and the expected flow rate, and determines whether the thermal efficiency target is met based on the deviation.

[0033] The present invention provides a water pump regulating system for a heating unit, a deviation analysis unit, comprising

[0034] Deviation determination subunit: if the deviation between the current flow rate and the expected flow rate is less than or equal to the preset deviation, it is determined that the water flow rate meets the thermal efficiency target;

[0035] Index determination subunit: If the deviation between the current flow and the expected flow is greater than the preset deviation, the load matching index is determined based on the current flow and the expected flow:

[0036]

[0037] Among them, γ opt is the load matching index, Q measured is the current water flow, Q exp is the expected water flow, T1 in is the current inlet water temperature, T1 out is the current outlet water temperature, ΔT exp is the expected inlet and outlet temperature difference, δ current is the currently measured heat exchange efficiency, δ0 is the preset target heat exchange efficiency;

[0038] Index determination subunit: If the load matching index is less than or equal to the preset matching threshold, it is determined that the water flow meets the thermal efficiency target, otherwise, it does not meet the target.

[0039] The present invention provides a water pump regulating system for a heating unit, a diameter adjustment module, comprising

[0040] Data acquisition unit: Install a preset pressure sensor on the inlet and outlet pipes of the water pump to obtain the pressure data of the water pump;

[0041] Diameter determination unit: determines the target impeller diameter based on the pressure data of the water pump, the current impeller diameter, and the current flow rate and the expected flow rate;

[0042] Diameter adjustment unit: adjusts the impeller instruction to the target impeller diameter based on a preset method;

[0043] State determination unit: measures the water flow of the water pump after the impeller diameter is adjusted, and determines whether the water flow meets the thermal efficiency target in combination with the working state of the heating unit. If the target is met, the adjustment is stopped;

[0044] Iterative adjustment unit: If the target is not reached, iterative adjustment is performed until the target is reached and then the adjustment is stopped.

[0045] The present invention provides a water pump regulating method for a heating unit, comprising:

[0046] Step 1: Obtain historical and real-time load data of the heating unit and then build a load demand model;

[0047] Step 2: Determine the thermal efficiency target of the heat exchange process based on the load demand model and the preset thermal efficiency requirements;

[0048] Step 3: Monitor the heat exchange data of the heating unit in real time to determine the heat exchange efficiency, and determine the working state of the heating unit based on the heat exchange efficiency and thermal efficiency target;

[0049] Step 4: Measure the water flow of the water pump in real time, and determine whether the water flow meets the thermal efficiency target in combination with the working status of the heating unit;

[0050] Step 5: If not, adjust the impeller diameter of the water pump based on the preset method until the thermal efficiency target is achieved.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] By building a load demand model in real time and dynamically adjusting the diameter of the water pump impeller, the heat exchange efficiency can be improved. Based on the real-time monitoring of heat exchange data and water flow status, it ensures that the water pump flow meets the thermal efficiency target, making the operation of the heating unit more efficient and energy-saving, effectively reducing energy consumption and improving the reliability and stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 It is a structural schematic diagram of a water pump regulating system for a heating unit provided in an embodiment of the present invention.

[0055] Figure 2 It is a flow chart of a water pump regulating method for a heating unit provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] Example 1

[0058] The embodiment of the present invention provides a water pump regulating system for a heating unit, such as Figure 1 As shown, including:

[0059] A water pump regulating system for a heating unit, characterized by comprising:

[0060] Model building module: obtain historical and real-time load data of heating units and then build a load demand model;

[0061] Target determination module: Determine the thermal efficiency target of the heat exchange process according to the load demand model and preset thermal efficiency requirements;

[0062] State determination module: monitors the heat exchange data of the heating unit in real time to determine the heat exchange efficiency, and determines the working state of the heating unit based on the heat exchange efficiency and thermal efficiency target;

[0063] State determination module: measures the water flow of the water pump in real time, and determines whether the water flow meets the thermal efficiency target in combination with the working state of the heating unit;

[0064] Diameter adjustment module: If not met, the impeller diameter of the water pump is adjusted based on the preset method until the thermal efficiency target is reached.

[0065] In this embodiment, the load demand model is a mathematical model constructed based on the heating demand of the heating unit in different time periods. The model uses historical data (such as past air temperature, heating demand, etc.) and real-time load data (such as current outdoor temperature, building heat load demand, etc.) to comprehensively analyze the load change characteristics under different conditions. Through this model, the system can predict future load demands and guide the adjustment of water pump operation. For example, if the heating unit has a high load demand during the morning peak period (such as 8 am to 10 am) and the load demand is reduced in the evening, the load demand model will output a higher flow rate for the water pump during the morning peak period and reduce the output in the evening to optimize the energy consumption of the water pump.

[0066] In this embodiment, the preset thermal efficiency requirement is the standard value of thermal efficiency that the system expects to achieve during the heat exchange process. It is usually set based on the design parameters and operating conditions of the heating system to ensure that the best energy utilization efficiency is achieved while meeting the heating demand and to reduce unnecessary energy consumption. For example, the preset thermal efficiency requirement of the heating system can be set to 85%, which means that the water pump regulation system is expected to always maintain a thermal efficiency of more than 85% during the heat exchange process. If the thermal efficiency is lower than 85% under certain load conditions, the system will improve the efficiency by adjusting the flow rate or impeller diameter of the water pump;

[0067] In this embodiment, the thermal efficiency target is a specific value dynamically set based on the load demand model and the preset thermal efficiency requirements, and is used to guide the efficiency index of the heating unit in the current state. It is a real-time target value determined by combining dynamic parameters such as current load conditions and environmental factors to ensure that the system can achieve reasonable thermal efficiency under various working conditions. For example, when the outside temperature is low, the system's load demand model may predict a higher heating demand, and the corresponding thermal efficiency target will be increased to 90% to ensure sufficient heating supply.

[0068] In this embodiment, the heat exchange efficiency refers to the efficiency of the heating unit in converting the heat source into usable heat, which reflects the effectiveness of the system's thermal energy utilization. The heat exchange efficiency is affected by factors such as the water pump flow rate and the heating temperature difference. It is an important indicator for evaluating the performance of the heating unit. For example, at a certain moment, the heat exchange efficiency of the heating unit is 80%, indicating that the heat energy transferred by the unit to the heating system accounts for 80% of the total input heat energy. If the heat exchange efficiency is lower than the thermal efficiency target, it indicates that the system may have an unsatisfactory heat exchange efficiency problem, and the operating status of the water pump needs to be further optimized;

[0069] In this embodiment, the working state of the heating unit is a comprehensive evaluation of the current operating conditions by the system based on the real-time heat exchange efficiency and the thermal efficiency target. The working state can be divided into "normal", "need to adjust", "overload" and other states to determine whether the system is in the optimal state of heating efficiency and flow coordination. For example, if the real-time heat exchange efficiency is lower than the thermal efficiency target and the water flow is insufficient, the working state of the system will be displayed as "need to adjust", prompting the water pump regulation system to optimize the operating parameters to meet the thermal efficiency requirements.

[0070] In this embodiment, the preset method refers to a strategy for adjusting the diameter of the water pump impeller when the heat exchange efficiency does not meet the thermal efficiency target. The method may include a specific adjustment step size and adjustment frequency of the impeller diameter, so as to more efficiently achieve the thermal efficiency target under different load conditions. For example, when the heating load demand increases, the preset method may set the impeller diameter adjustment step size to 0.5 mm, and detect the efficiency change every 10 minutes, and gradually increase the diameter until the heat exchange efficiency meets the current thermal efficiency target.

[0071] The beneficial effects of the above technical solution are: by building a load demand model in real time, dynamically adjusting the diameter of the water pump impeller, accurately matching the changing demand of the heating load, and thus improving the heat exchange efficiency. Based on the real-time monitoring of heat exchange data and water flow status, it ensures that the water pump flow meets the thermal efficiency target, making the operation of the heating unit more efficient and energy-saving, effectively reducing energy consumption and improving the reliability and stability of the system.

[0072] Example 2

[0073] The embodiment of the present invention provides a water pump regulation system for a heating unit, a target determination module, including:

[0074] Collect historical load data and real-time load data of heating units based on preset tools;

[0075] Build a load demand model based on historical load data, real-time load data and preset prediction algorithms.

[0076] In this embodiment, the preset tool refers to the hardware and software equipment or software module for data collection, analysis, processing and modeling prepared and designed in advance by the developer or engineer during the system development and deployment stage. It can be an automated data collection system, sensor equipment, monitoring system, or a software toolkit, library or algorithm module for processing and analyzing data. Assuming that there is a set of heating units, multiple devices for real-time monitoring and data collection are usually configured. For example: Hardware tools: Temperature sensor: used to monitor the temperature change of hot water supply. Pressure sensor: used to collect real-time pressure data of the water pump system. Flow meter: used to monitor the flow of hot water supply. Software tools: Data acquisition system: a real-time monitoring system for summarizing and recording data from sensors. Data analysis tools: such as Pandas and Numpy libraries in Python, used for data preprocessing and analysis. Database systems: such as MySQL and MongoDB, used to store historical load data and real-time load data. These tools are pre-configured and set during system design to ensure that the required data can be collected in a timely and accurate manner, providing basic data support for subsequent model construction and prediction.

[0077] In this embodiment, the preset prediction algorithm refers to an algorithm model selected and designed in advance during the system design phase for analyzing load data and predicting future load demand. The preset prediction algorithm is usually based on historical load data and real-time load data. By analyzing these data, the future load demand of the heating unit is predicted, thereby optimizing the regulation and control of the water pump. For example, the time series prediction algorithm, the machine learning algorithm, and the deep learning model assume that the historical load data of the heating unit show that the heating demand in winter is high and fluctuates significantly in the morning and evening, and the demand in summer is low. By using the SARIMA model for prediction, the load demand trend in the next few days can be discovered, and the output power of the water pump can be adjusted in advance, thereby ensuring the stability of heating and saving energy. If the LSTM model is used, the subtle changes and sudden demands in the heating load demand can be further captured, so as to more accurately adjust the working state of the water pump.

[0078] The beneficial effects of the above technical solution are: through the fusion of historical and real-time load data and the use of prediction algorithms, the load demand model is accurately constructed, and the intelligent prediction and adjustment of the heating unit are realized. Combined with data-driven and algorithm optimization, the heating process is made more flexible and accurate and the overall operating efficiency and energy-saving effect are effectively improved.

[0079] Example 3

[0080] The embodiment of the present invention provides a water pump regulation system for a heating unit, a target determination module, including:

[0081] Curve drawing unit: based on the load demand model and the preset thermal efficiency requirements, draw the relationship curve between load and thermal efficiency;

[0082] Target creation unit: creates a heat exchange efficiency target table based on the relationship curve between load and thermal efficiency;

[0083] Level determination unit: matches the real-time load data with the load demand model to determine the real-time operating load level of the heating unit;

[0084] Target extraction unit: extracts the corresponding heat exchange efficiency target from the heat exchange efficiency target table according to the real-time operating load level.

[0085] In this embodiment, the relationship curve between load and thermal efficiency is a curve drawn according to the load demand of the heating unit and the preset thermal efficiency requirement. It is used to describe the thermal efficiency performance of the heating unit under different load levels, and help determine the optimal efficiency that the system can achieve under different working conditions, assuming that the load demand range of a heating system is between 50% and 100%. Through testing and historical data, a relationship curve between load and thermal efficiency can be drawn. This curve may show that when the load is 70%, the thermal efficiency of the system reaches the highest, which is 90%; when the load is lower than 60% or higher than 90%, the thermal efficiency gradually decreases. This relationship curve can guide the adjustment of the water pump so that the system operates in the optimal load range.

[0086] In this embodiment, the heat exchange efficiency target table is a reference table created based on the load and thermal efficiency relationship curve, which lists the heat exchange efficiency targets expected to be achieved at different load levels. The target table is used to guide how the system optimizes operation under different loads to achieve the preset heat exchange efficiency. For example, in a heat exchange efficiency target table, the following data may be included: when the load is 50%, the target heat exchange efficiency is 80%, when the load is 70%, the target heat exchange efficiency is 90%, and when the load is 100%, the target heat exchange efficiency is 85%. Through this table, the system can determine the thermal efficiency that should be achieved at different load levels, thereby guiding the water pump adjustment action to achieve efficient heating.

[0087] In this embodiment, the load level of the unit at the current moment. This level is obtained by matching the real-time load data with the load demand model, and is used to evaluate the operating conditions of the current system, so as to adjust system parameters such as the water pump according to the heat exchange efficiency target table to ensure that the system operates within the appropriate load range. Assume that the current detected real-time load is 75%. According to the load demand model, it can be determined that the real-time operating load level at this time is "medium-high load state". The system will match the target heat exchange efficiency in the heat exchange efficiency target table according to this state, and make relevant adjustments to ensure that the best efficiency is achieved.

[0088] In this embodiment, extracting the corresponding heat exchange efficiency target from the heat exchange efficiency target table means finding the corresponding heat exchange efficiency target value from the preset heat exchange efficiency target table according to the real-time operating load level. The system guides the water pump adjustment according to the target value to ensure that the heat exchange system reaches the target efficiency. If the real-time operating load level is determined to be 70%, the system will look up the corresponding target heat exchange efficiency in the heat exchange efficiency target table, such as 90%. Then, the system will adjust the water pump output to ensure that the thermal efficiency is as close to 90% as possible under the current load conditions.

[0089] The beneficial effects of the above technical solution are: by establishing a load and thermal efficiency relationship model and dynamically adjusting the operating efficiency of the water pump of the heating unit, the system can intelligently adjust the operating level according to the real-time load, realize precise heating and energy efficiency optimization, and through real-time matching and target extraction, link the load changes with the heat exchange efficiency targets, significantly improving the adaptability and energy-saving effect of the heating process, and realizing intelligent and efficient heating regulation.

[0090] Example 4

[0091] The embodiment of the present invention provides a water pump regulating system for a heating unit, a state determination module, including:

[0092] Data monitoring unit: monitors the heat exchange data of the heating unit based on preset monitoring tools;

[0093] Efficiency determination unit: Determine the heat exchange efficiency based on the heat exchange data of the heating unit:

[0094]

[0095] Among them, γ is the heat exchange efficiency of the heat exchanger of the heating unit, T env is the ambient temperature of the heat exchanger of the heating unit, T in is the temperature of the fluid when it enters the heat exchanger, C p is the specific heat capacity of the fluid, U is the heat transfer coefficient of the heat exchanger of the heating unit, A is the surface area of ​​the heat exchanger of the heating unit,

[0096] Where, ΔT im is the temperature difference inside the heat exchanger of the heating unit:

[0097]

[0098] Among them, T out is the temperature of the fluid when it enters the heat exchanger;

[0099] State determination unit: determines the deviation between the heat exchange efficiency and the heat exchange efficiency target, determines the preset deviation range where the deviation is located based on the preset deviation range-state data table, and then determines the working state corresponding to the preset deviation range.

[0100] In this embodiment, heat exchange data refers to various parameter data related to the heat exchange process collected in real time during the operation of the heat exchanger of the heating unit, including the temperature of the fluid entering the heat exchanger, the specific heat capacity of the fluid, the flow rate, the ambient temperature, the surface area of ​​the heat exchanger, the heat transfer coefficient, etc., for the purpose of calculating and analyzing the actual heat exchange efficiency of the heat exchanger. These data are the basis for calculating the heat exchange efficiency and are helpful for evaluating the performance and working status of the current heat exchanger.

[0101] In this embodiment, the preset deviation range refers to the range interval that is preset when the system is designed and is used to measure the gap between the actual heat exchange efficiency and the target heat exchange efficiency. According to the deviation between the actual heat exchange efficiency and the target heat exchange efficiency, the system can determine which interval the current working state belongs to (such as normal, warning, emergency), and take corresponding adjustment or alarm measures. Assume that the preset deviation range-status data table of a heating unit is as follows: when the deviation is less than 2%, the state is "normal"; when the deviation is between 2%-5%, the state is "mild deviation", and monitoring is recommended; when the deviation is between 5%-10%, the state is "moderate deviation" and adjustment is required; when the deviation is greater than 10%, the state is "serious deviation", and immediate adjustment or shutdown inspection is required. Suppose the actual heat exchange efficiency currently measured is 88%, and the target heat exchange efficiency is 90%. The deviation is: 2.22%. In this case, the deviation belongs to the "mild deviation" range, and the system will enter the monitoring state, but will not be adjusted immediately.

[0102] The beneficial effects of the above technical solution are: by monitoring the real-time data of the heat exchanger of the heating unit, dynamically evaluating its heat exchange efficiency, and combining the environment and fluid parameters, intelligently adjusting the operating state of the water pump. By matching the preset deviation range with the state, the optimal balance between efficiency and energy consumption is achieved, and the overall heat exchange efficiency and system stability are improved. It not only improves the response speed of the heating unit, but also reduces energy waste, realizes intelligent and precise thermal regulation and control, and is suitable for optimized operation under a variety of complex working conditions.

[0103] Example 5

[0104] The embodiment of the present invention provides a water pump regulating system for a heating unit, a state determination module, including:

[0105] Flow collection unit: A preset flow monitoring device is installed at a preset location of the heating unit, and real-time flow data is collected to obtain the current flow;

[0106] Flow extraction unit: obtains the real-time working condition of the heating unit based on the preset working condition acquisition device, and obtains the current working condition. At the same time, extracts the expected flow under the current working condition in the load demand model;

[0107] Deviation analysis unit: Determines the deviation between the current flow rate and the expected flow rate, and determines whether the thermal efficiency target is met based on the deviation.

[0108] In this embodiment, the preset locations refer to the locations in the heating unit system where flow monitoring devices are pre-selected and installed. These locations are usually key fluid flow nodes that can accurately reflect changes in system flow. By installing monitoring devices at these preset locations, the flow information of the system can be obtained in real time, and the accuracy and representativeness of the monitoring data can be ensured. For example, typical preset locations may include: the main water supply pipe before entering the heat exchanger: the water flow entering the heat exchanger can be monitored here to help determine the water supply status of the system, the water outlet pipe: monitor the flow leaving the heat exchanger to understand whether the system has achieved the expected heat exchange effect. It is assumed that a flow monitoring device is set up on the main water supply pipe to detect the water flow entering the heat exchanger so that the system can adjust the flow rate of the water pump according to these data to achieve the target efficiency;

[0109] In this embodiment, the preset flow monitoring device refers to a device installed at a preset position of the heating unit for collecting flow data in real time. The device can record the current flow of the fluid and transmit the data to the system for deviation analysis and flow regulation. Commonly used flow monitoring devices include ultrasonic flow meters, electromagnetic flow meters, etc. The specific selection depends on system requirements and fluid characteristics. For example, in a water pump regulation system of a heating unit, an ultrasonic flow meter may be installed as a preset flow monitoring device because it can measure the water flow in real time without destroying the pipeline structure. The flow monitoring device collects the flow data entering the heat exchanger in real time and transmits it to the control system to compare the actual flow with the expected flow.

[0110] In this embodiment, the preset working condition acquisition device refers to a device or sensor group used to monitor and record the real-time operating conditions of the heating unit. These devices can collect working condition parameters such as temperature, pressure, load, etc. that are closely related to the operating conditions of the heating unit, and provide basic data for the system's working condition analysis, thereby ensuring that the system can operate efficiently under different load conditions. For example, a heating unit may be installed with a temperature sensor and a pressure sensor as preset working condition acquisition devices, which are used to monitor the fluid temperature and pressure in the heat exchanger, respectively. These data help determine the current system load and flow conditions to match the corresponding flow requirements, thereby optimizing the water pump regulation strategy;

[0111] In this embodiment, the current operating condition refers to the actual operating state of the heating unit at a specific moment, including key parameters such as the current load level, fluid temperature, and pressure. The current operating condition reflects the real-time load demand and operating environment of the heating unit. Based on the current operating condition, the system can extract the corresponding expected flow value in the load demand model for deviation analysis to ensure that the flow regulation meets the target efficiency requirements. Assume that the current system detects the following operating conditions: load level: 70%, fluid inlet temperature: 65°C, pipeline pressure: 0.5MPa. Under such current operating conditions, the system will look for the expected flow under 70% load conditions in the load demand model, assuming it is 1500L / h, and then compare the actual flow with the expected flow to determine whether the target thermal efficiency requirements are met. If the deviation is large, the system will adjust the water pump flow to ensure the thermal efficiency target.

[0112] The beneficial effects of the above technical solution are: through the flow collection and extraction of the state judgment module, the intelligent monitoring and analysis of the real-time working conditions of the heating unit can be realized. Through the deviation analysis unit, it is dynamically judged whether the deviation between the current flow and the expected flow meets the thermal efficiency target, which effectively improves the system's response accuracy to load demand, reduces energy waste while ensuring heating efficiency, improves the intelligence and automation of the system, and enhances the overall stability and energy saving of the heating unit.

[0113] Example 6

[0114] The embodiment of the present invention provides a water pump regulation system for a heating unit, a deviation analysis unit, comprising:

[0115] Deviation determination subunit: if the deviation between the current flow rate and the expected flow rate is less than or equal to the preset deviation, it is determined that the water flow rate meets the thermal efficiency target;

[0116] Index determination subunit: If the deviation between the current flow and the expected flow is greater than the preset deviation, the load matching index is determined based on the current flow and the expected flow:

[0117]

[0118] Among them, γ opt is the load matching index, Q measured is the current water flow, Q exp is the expected water flow, T1 in is the current inlet water temperature, T1 out is the current outlet water temperature, ΔT exp is the expected inlet and outlet temperature difference, δ current is the currently measured heat exchange efficiency, δ0 is the preset target heat exchange efficiency;

[0119] Index determination subunit: If the load matching index is less than or equal to the preset matching threshold, it is determined that the water flow meets the thermal efficiency target, otherwise, it does not meet the target.

[0120] In this embodiment, the load matching index is a comprehensive indicator for evaluating whether the current water flow rate matches the system load demand, and is calculated based on multiple factors such as the actual flow rate and the expected flow rate, the inlet and outlet temperature difference, and the current and target heat exchange efficiency. The role of the load matching index is to determine whether the current system operating state meets the requirements of heating efficiency, thereby guiding the water pump adjustment to optimize system performance.

[0121] In this embodiment, the preset matching threshold refers to a reference value set for the load matching index when the system is designed, which is used to evaluate whether the current water flow rate meets the thermal efficiency requirements. If the load matching index is less than or equal to this threshold, the system determines that the water flow rate meets the thermal efficiency target; otherwise, it indicates that the current water flow rate does not match the load demand and the water pump operating parameters need to be adjusted. Assuming that the system preset matching threshold is 1.0, according to the calculated load matching index of 0.9917, the system will determine that the current water flow rate meets the thermal efficiency target, which means that the current water pump operating parameters do not need to be adjusted, and the system can continue to operate in the current state. If the load matching index exceeds the preset threshold, the system will consider that the water flow rate does not meet the thermal efficiency requirements, and the system will trigger an adjustment process (such as increasing the water pump output or changing the flow setting) to optimize the heating efficiency.

[0122] The beneficial effects of the above technical solution are: the water pump flow rate is automatically matched and adjusted through the deviation analysis unit, thereby improving the thermal efficiency of the heating unit. When the flow rate deviation exceeds the set value, the flow rate is accurately adjusted based on the load matching index to ensure that the system energy utilization is highly matched with the heat demand. This effectively avoids unnecessary energy consumption, maintains the best heat exchange effect, ensures the stability and energy saving of the system operation, and thus achieves the purpose of improving the overall efficiency of the heating system.

[0123] Example 7

[0124] The embodiment of the present invention provides a water pump regulating system for a heating unit, a diameter adjustment module, comprising:

[0125] Data acquisition unit: Install a preset pressure sensor on the inlet and outlet pipes of the water pump to obtain the pressure data of the water pump;

[0126] Diameter determination unit: determines the target impeller diameter based on the pressure data of the water pump, the current impeller diameter, and the current flow rate and the expected flow rate;

[0127] Diameter adjustment unit: adjusts the impeller instruction to the target impeller diameter based on a preset method;

[0128] State determination unit: measures the water flow of the water pump after the impeller diameter is adjusted, and determines whether the water flow meets the thermal efficiency target in combination with the working state of the heating unit. If the target is met, the adjustment is stopped;

[0129] Iterative adjustment unit: If the target is not reached, iterative adjustment is performed until the target is reached and then the adjustment is stopped.

[0130] In this embodiment, the target impeller diameter refers to the impeller diameter that can meet the thermal efficiency target under specific working conditions and is calculated based on the current pressure data of the water pump, the impeller diameter, the current flow rate and the expected flow rate. The impeller diameter directly affects the flow rate and head of the water pump. By adjusting the impeller diameter, the water flow rate can be adjusted to make the system run more efficiently. The calculation of the target impeller diameter is usually based on the relationship between the flow rate and the impeller diameter. Appropriately increasing or decreasing the impeller diameter can increase or decrease the flow rate to achieve the required thermal efficiency.

[0131] In this embodiment, the preset method refers to using a pre-set adjustment method to issue a control instruction to adjust the diameter of the water pump impeller so that it reaches the calculated target diameter. The method of adjusting the impeller diameter may include impeller replacement, impeller grinding or other adjustment means, depending on the specific equipment and system requirements, including: impeller replacement: directly replace the current impeller with an impeller of a different diameter, adjustable impeller device: if the water pump is equipped with an adjustable impeller device, the diameter of the impeller can be remotely adjusted through the control system, impeller grinding: a certain degree of grinding is performed on the impeller surface to reduce the impeller diameter. Assuming that a water pump with an automatic adjustment function is used in the heating system, the impeller can be adjusted according to the calculated target diameter. In this example, the target impeller diameter is 169.2mm, and the control system will send an instruction to increase the impeller diameter from 150mm to 169.2mm through the adjustable device in the water pump. Once the adjustment is in place, the system measures the adjusted water flow rate to confirm whether the target thermal efficiency is achieved, and stops adjusting if it is achieved. If the water pump does not have an automatic adjustment function, the system will recommend manual impeller replacement or grinding based on the target impeller diameter to adjust the impeller diameter to a value close to 169.2mm.

[0132] The beneficial effects of the above technical solution are: by automatically adjusting the diameter of the water pump impeller based on real-time pressure data and flow feedback, the water pump of the heating unit can be precisely controlled. Through multiple iterations, the water flow rate is ensured to achieve the optimal thermal efficiency, avoiding errors and delays in manual adjustment, while saving energy and improving the stability and operating efficiency of the heating system. This dynamic adjustment method innovatively improves the intelligence level of the equipment, realizes real-time optimization and adaptive adjustment of the water pump performance, and enhances the overall economic and environmental benefits of the system.

[0133] Example 8

[0134] An embodiment of the present invention provides a water pump adjustment method for a heating unit, comprising:

[0135] Step 1: Obtain historical and real-time load data of the heating unit and then build a load demand model;

[0136] Step 2: Determine the thermal efficiency target of the heat exchange process based on the load demand model and the preset thermal efficiency requirements;

[0137] Step 3: Monitor the heat exchange data of the heating unit in real time to determine the heat exchange efficiency, and determine the working state of the heating unit based on the heat exchange efficiency and thermal efficiency target;

[0138] Step 4: Measure the water flow of the water pump in real time, and determine whether the water flow meets the thermal efficiency target in combination with the working status of the heating unit;

[0139] Step 5: If not, adjust the impeller diameter of the water pump based on the preset method until the thermal efficiency target is achieved.

[0140] The beneficial effects of the above technical solution are: by building a load demand model in real time, dynamically adjusting the diameter of the water pump impeller, accurately matching the changing demand of the heating load, and thus improving the heat exchange efficiency. Based on the real-time monitoring of heat exchange data and water flow status, it ensures that the water pump flow meets the thermal efficiency target, making the operation of the heating unit more efficient and energy-saving, effectively reducing energy consumption and improving the reliability and stability of the system.

[0141] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water pump regulating system for a heating unit, characterized in that: include: Model building module: obtain historical and real-time load data of heating units and then build a load demand model; Target determination module: Determine the thermal efficiency target of the heat exchange process according to the load demand model and preset thermal efficiency requirements; State determination module: monitors the heat exchange data of the heating unit in real time to determine the heat exchange efficiency, and determines the working state of the heating unit based on the heat exchange efficiency and thermal efficiency target; State determination module: measures the water flow of the water pump in real time, and determines whether the water flow meets the thermal efficiency target in combination with the working state of the heating unit; Diameter adjustment module: If not met, the impeller diameter of the water pump is adjusted based on the preset method until the thermal efficiency target is reached.

2. A water pump regulating system for a heating unit according to claim 1, characterized in that: Targeting module, including: Collect historical load data and real-time load data of heating units based on preset tools; Build a load demand model based on historical load data, real-time load data and preset prediction algorithms.

3. A water pump regulating system for a heating unit according to claim 1, characterized in that: Targeting module, including: Curve drawing unit: based on the load demand model and the preset thermal efficiency requirements, draw the relationship curve between load and thermal efficiency; Target creation unit: creates a heat exchange efficiency target table based on the relationship curve between load and thermal efficiency; Level determination unit: matches the real-time load data with the load demand model to determine the real-time operating load level of the heating unit; Target extraction unit: extracts the corresponding heat exchange efficiency target from the heat exchange efficiency target table according to the real-time operating load level.

4. A water pump regulating system for a heating unit according to claim 1, characterized in that: A state determination module, comprising: Data monitoring unit: monitors the heat exchange data of the heating unit based on preset monitoring tools; Efficiency determination unit: Determine the heat exchange efficiency based on the heat exchange data of the heating unit: Among them, γ is the heat exchange efficiency of the heat exchanger of the heating unit, T env is the ambient temperature of the heat exchanger of the heating unit, T in is the temperature of the fluid when it enters the heat exchanger, C p is the specific heat capacity of the fluid, U is the heat transfer coefficient of the heat exchanger of the heating unit, A is the surface area of ​​the heat exchanger of the heating unit, Where, ΔT im is the temperature difference inside the heat exchanger of the heating unit: Among them, T out is the temperature of the fluid when it enters the heat exchanger; State determination unit: determines the deviation between the heat exchange efficiency and the heat exchange efficiency target, determines the preset deviation range where the deviation is located based on the preset deviation range-state data table, and then determines the working state corresponding to the preset deviation range.

5. The water pump regulating system for a heating unit according to claim 1, characterized in that: The state determination module includes: Flow collection unit: A preset flow monitoring device is installed at a preset location of the heating unit, and real-time flow data is collected to obtain the current flow; Flow extraction unit: obtains the real-time working condition of the heating unit based on the preset working condition acquisition device, and obtains the current working condition. At the same time, extracts the expected flow under the current working condition in the load demand model; Deviation analysis unit: Determines the deviation between the current flow rate and the expected flow rate, and determines whether the thermal efficiency target is met based on the deviation.

6. A water pump regulating system for a heating unit according to claim 5, characterized in that: Deviation Analysis Unit, including Deviation determination subunit: if the deviation between the current flow rate and the expected flow rate is less than or equal to the preset deviation, it is determined that the water flow rate meets the thermal efficiency target; Index determination subunit: If the deviation between the current flow and the expected flow is greater than the preset deviation, the load matching index is determined based on the current flow and the expected flow: Among them, γ opt is the load matching index, Q measured is the current water flow, Q exp is the expected water flow, T1 in is the current inlet water temperature, T1 out is the current outlet water temperature, ΔT exp is the expected inlet and outlet temperature difference, δ current is the currently measured heat exchange efficiency, δ0 is the preset target heat exchange efficiency; Index determination subunit: If the load matching index is less than or equal to the preset matching threshold, it is determined that the water flow meets the thermal efficiency target, otherwise, it does not meet the target.

7. The water pump regulating system for a heating unit according to claim 1, characterized in that: Diameter adjustment module, including Data acquisition unit: Install a preset pressure sensor on the inlet and outlet pipes of the water pump to obtain the pressure data of the water pump; Diameter determination unit: determines the target impeller diameter based on the pressure data of the water pump, the current impeller diameter, and the current flow rate and the expected flow rate; Diameter adjustment unit: adjusts the impeller instruction to the target impeller diameter based on a preset method; State determination unit: measures the water flow of the water pump after the impeller diameter is adjusted, and determines whether the water flow meets the thermal efficiency target in combination with the working state of the heating unit. If the target is met, the adjustment is stopped; Iterative adjustment unit: If the target is not reached, iterative adjustment is performed until the target is reached and then the adjustment is stopped.

8. A water pump adjustment method for a heating unit, characterized in that: include: Step 1: Obtain historical and real-time load data of the heating unit and then build a load demand model; Step 2: Determine the thermal efficiency target of the heat exchange process based on the load demand model and the preset thermal efficiency requirements; Step 3: Monitor the heat exchange data of the heating unit in real time to determine the heat exchange efficiency, and determine the working state of the heating unit based on the heat exchange efficiency and thermal efficiency target; Step 4: Measure the water flow of the water pump in real time, and determine whether the water flow meets the thermal efficiency target in combination with the working status of the heating unit; Step 5: If not, adjust the impeller diameter of the water pump based on the preset method until the thermal efficiency target is achieved.

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