Method and device for determining thermal retardation duration of heat supply secondary pipeline, storage medium and electronic device

Abstract

The invention discloses a method and device for determining the thermal retardation duration of a heat supply secondary pipeline, a storage medium and an electronic device.The method comprises the steps that pipeline heat supply data, collected by an Internet of Things collection terminal, of the heat supply secondary pipeline are obtained, the pipeline heat supply data at least comprise first heat supply data of a main pipeline of the heat supply secondary pipeline and second heat supply data of a branch pipeline of the heat supply secondary pipeline; first change duration corresponding to the maximum temperature change rate of the main pipeline is determined on the basis of the first heat supply data, second change duration corresponding to the maximum temperature change rate of the branch pipeline is determined on the basis of the second heat supply data, and first heat delay duration corresponding to the branch pipeline is determined according to the first change duration and the second change duration; and the maximum heat retardation duration is selected from the multiple first heat retardation durations, the maximum heat retardation duration is determined as the second heat retardation duration of the main pipeline, and the heat supply system of the heat supply secondary pipeline is adjusted based on the second heat retardation duration.

Description

Technical Field

[0001] The present application relates to the control field of a heating system, and in particular, to a method and device for determining a thermal hysteresis duration of a heating secondary pipeline, a storage medium, and an electronic device. Background Art

[0002] In recent years, with the development of Internet of Things technology, heating systems based on the Internet of Things have been increasingly used.

[0003] At present, some heating systems do not consider the problem of thermal hysteresis, and only rely on experience to adjust the parameters required for heating load prediction. The deviation of the parameters is large, which affects the operating efficiency of the heating system. Although some heating systems have begun to pay attention to the thermal hysteresis phenomenon, they basically determine the thermal hysteresis duration by experiment, that is, under the normal operation of the heating system, by controlling the temperature of the main pipeline, the time for the temperature change of the main pipeline to reach the specified temperature is used as the thermal hysteresis duration. However, this method ignores the objective situation that the temperature conduction speed of different pipelines is different. For example, the branch pipeline is at the end of the main pipeline. Due to the poor heat dissipation conditions of the branch pipeline, the temperature change of the branch pipeline is often later than that of the main pipeline, and because the branch pipeline itself has a weak heat storage capacity, when the temperature change of the main pipeline reaches the specified temperature, the temperature change of the branch pipeline has not yet reached it. Therefore, the thermal hysteresis duration of the branch pipeline is often greater than the thermal hysteresis duration of the main pipeline. If the thermal hysteresis duration of the main pipeline is directly used, the operating efficiency of the heating system will be reduced. It can be seen that in the related art, there is a technical problem that the operating efficiency of the heating system is low due to inaccurate thermal hysteresis duration.

[0004] With regard to the technical problem in the related technology that the operating efficiency of the heating system is low due to inaccurate thermal hysteresis duration, 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 the thermal hysteresis duration of a secondary heating pipeline, a storage medium, and an electronic device, so as to at least solve the technical problem that the operating efficiency of the heating system is low due to inaccurate thermal hysteresis duration.

[0007] According to one aspect of an embodiment of the present application, a method for determining a thermal hysteresis duration of a heating secondary pipeline is provided, comprising: obtaining pipeline heating data of the heating secondary pipeline collected by an Internet of Things collection terminal, wherein the pipeline heating data at least includes first heating data of a main pipeline of the heating secondary pipeline and second heating data of a branch pipeline of the heating secondary pipeline; determining a first change duration corresponding to a maximum temperature change rate of the main pipeline based on the first heating data, and determining a second change duration corresponding to a maximum temperature change rate of the branch pipeline based on the second heating data, and determining a first thermal hysteresis duration corresponding to the branch pipeline based on the first change duration and the second change duration; selecting a maximum thermal hysteresis duration from multiple first thermal hysteresis durations, determining the maximum thermal hysteresis duration as the second thermal hysteresis duration of the main pipeline, and adjusting the heating system of the heating secondary pipeline based on the second thermal hysteresis duration.

[0008] In an exemplary embodiment, determining a first change duration corresponding to when the temperature change rate of the main pipeline is maximum based on the first heat supply data includes: determining a first water supply temperature of the heat exchange station of the main pipeline and a second water supply temperature at the user inlet of the main pipeline from the first heat supply data; when determining that the pipeline flow change rate of the main pipeline is a first preset change rate, adjusting the first water supply temperature to a target water supply temperature, monitoring the temperature change difference when the second water supply temperature changes and the change duration corresponding to the temperature change difference, and determining the temperature change rate according to the ratio between the temperature change difference when the second water supply temperature changes and the change duration corresponding to the temperature change difference, and determining the change duration corresponding to when the temperature change rate is maximum as the first change duration.

[0009] In an exemplary embodiment, determining the first thermal hysteresis time corresponding to the branch pipe according to the first change time and the second change time includes: when it is determined that the second change time is greater than the first change time, determining the first thermal hysteresis time according to the difference between the second change time and the first change time; wherein the first thermal hysteresis time is expressed as follows: t1=t k2max -t k1max ; t1 is the first thermal hysteresis time, t k1max is the first change duration, t k2max is the second change duration.

[0010] In an exemplary embodiment, the method further includes: grouping the second thermal hysteresis time according to the pipeline flow of the main pipeline to obtain multiple groups of third thermal hysteresis time, wherein each group of third thermal hysteresis time corresponds to a pipeline flow; establishing a correspondence between the pipeline flow and the third thermal hysteresis time according to the multiple groups of third thermal hysteresis time, and storing the correspondence.

[0011] In an exemplary embodiment, the heating system of the secondary heating pipe is adjusted based on the second thermal hysteresis time, including: determining a first thermal conductivity of a pipe material of a current heating pipe of the heating system, determining a heating pipe with a second thermal conductivity from alternative heating pipes, and sending a first prompt message to a target object to prompt the target object to replace the current heating pipe with the heating pipe with the second thermal conductivity, wherein the second thermal conductivity is less than the first thermal conductivity; or, sending a second prompt message to the target object to prompt the target object to add an insulation layer in the current heating pipe.

[0012] In an exemplary embodiment, the heating system of the secondary heating pipeline is adjusted based on the second thermal hysteresis time, including: determining a speed adjustment value set in advance for a circulation pump of the secondary heating pipeline; adding the speed adjustment value to the current speed value of the circulation pump to increase the current pipeline flow of the main pipeline.

[0013] According to another aspect of an embodiment of the present application, a device for determining a thermal hysteresis duration of a heating secondary pipeline is also provided, comprising: an acquisition module, used to acquire pipeline heating data of the heating secondary pipeline collected by an Internet of Things acquisition terminal, wherein the pipeline heating data at least includes first heating data of the main pipeline of the heating secondary pipeline and second heating data of the branch pipeline of the heating secondary pipeline; a determination module, used to determine a first change duration corresponding to a maximum temperature change rate of the main pipeline based on the first heating data, and to determine a second change duration corresponding to a maximum temperature change rate of the branch pipeline based on the second heating data, and to determine a first thermal hysteresis duration corresponding to the branch pipeline based on the first change duration and the second change duration; an adjustment module, used to select a maximum thermal hysteresis duration from multiple first thermal hysteresis durations, determine the maximum thermal hysteresis duration as the second thermal hysteresis duration of the main pipeline, and adjust the heating system of the heating secondary pipeline based on the second thermal hysteresis duration.

[0014] According to another aspect of the embodiment of the present application, a computer-readable storage medium is also provided, in which a computer program is stored, wherein the computer program is configured to execute the above-mentioned method for determining the thermal hysteresis duration of the secondary heating pipeline when running.

[0015] According to another aspect of an embodiment of the present application, an electronic device is also provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes a method for determining the thermal hysteresis duration of the secondary heating pipeline 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 this application, the Internet of Things cloud platform obtains the pipeline heating data of the heating secondary pipeline collected by the Internet of Things collection terminal, wherein the pipeline heating data at least includes the first heating data of the main pipeline of the heating secondary pipeline and the second heating data of the branch pipeline of the heating secondary pipeline; based on the first heating data, the first change duration corresponding to the maximum temperature change rate of the main pipeline is determined, and based on the second heating data, the second change duration corresponding to the maximum temperature change rate of the branch pipeline is determined, and the first thermal hysteresis duration corresponding to the branch pipeline is determined according to the first change duration and the second change duration; the maximum thermal hysteresis duration is selected from multiple first thermal hysteresis durations, and the maximum thermal hysteresis duration is determined as the second thermal hysteresis duration of the main pipeline, and the heating system of the heating secondary pipeline is adjusted based on the second thermal hysteresis duration. In this way, the pipeline heating data is obtained through the Internet of Things cloud platform, and the temperature change duration of the main pipeline and the branch pipeline is analyzed, so as to accurately determine the thermal hysteresis duration, solve the technical problem of low operating efficiency of the heating system due to inaccurate thermal hysteresis duration, and provide data support for the optimization and adjustment of the heating system. 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 an Internet of Things cloud platform for a method for determining a thermal hysteresis duration of a heating secondary pipeline in an embodiment of the present application;

[0021] Figure 2 is a flow chart of a method for determining the thermal hysteresis duration of a heating secondary pipeline according to an embodiment of the present application;

[0022] Figure 3 It is a structural block diagram of a device for determining the thermal hysteresis duration of a secondary heating pipeline according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] The method embodiments provided in the embodiments of the present application can be executed in a mobile terminal, a computer terminal, an IoT cloud platform or a similar computing device. Taking running on an IoT cloud platform as an example, Figure 1 This is a hardware structure block diagram of an Internet of Things cloud platform for a method for determining the thermal hysteresis duration of a heating secondary pipeline in an embodiment of the present application. Figure 1 As shown, the IoT cloud platform 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 IoT cloud platform may also include a transmission device 106 for communication functions and an input and output device 108. A person skilled in the art can understand that Figure 1 The structure shown is for illustration only and does not limit the structure of the above-mentioned IoT cloud platform. Figure 1 More or fewer components as shown, or with Figure 1Different configurations are shown.

[0026] 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 thermal hysteresis duration of the heating secondary pipeline 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 instances, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the Internet of Things cloud platform 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.

[0027] 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 the IoT cloud platform. 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.

[0028] In this embodiment, a method for determining the thermal hysteresis time of a heating secondary pipeline is provided. Figure 2 is a flow chart of a method for determining the thermal hysteresis time length of a heating secondary pipeline according to an embodiment of the present application. Figure 2 As shown, the process includes the following steps:

[0029] Step S202: Acquire pipeline heating data of the heating secondary pipeline collected by the Internet of Things collection terminal, wherein the pipeline heating data at least includes first heating data of the main pipeline of the heating secondary pipeline and second heating data of the branch pipeline of the heating secondary pipeline;

[0030] Through the above steps, the Internet of Things acquisition terminal can be used to collect pipeline temperature information in real time, provide data support for temperature control of key points in the heating system, and obtain the temperature change curves of the main pipeline and branch pipeline through analysis and processing, and further obtain the thermal hysteresis time, so as to realize precise and intelligent control of the heating system.

[0031] Step S204: determining a first change duration corresponding to when the temperature change rate of the main pipeline is maximum based on the first heat supply data, and determining a second change duration corresponding to when the temperature change rate of the branch pipeline is maximum based on the second heat supply data, and determining a first thermal hysteresis duration corresponding to the branch pipeline according to the first change duration and the second change duration;

[0032] It is understandable that in the heating system, the main pipeline is responsible for distributing the hot water obtained from the heat exchange station to each user entrance, while the return pipe returns the water used by the user to the heat exchange station for reheating. The temperature change rate reflects the change in temperature within a specific time, and the changes in the supply water temperature and the return water temperature are the direct cause and result of the temperature change rate. The temperature change rate can be expressed as the ratio of the temperature change amount to the time change amount, which is used to describe how fast the water temperature in the secondary water supply main pipeline changes over time.

[0033] This application uses the thermal hysteresis time as an important parameter in the heating system to optimize the operating efficiency and operating cost of the heating system. Among them, the thermal hysteresis time can be simply understood as the time from the start of heating to the end of heating when the pipe temperature changes to a specified value. Since the hot water in the heating pipe has heat storage capacity, it takes a certain amount of time for the pipe temperature to change. The analysis of the thermal hysteresis time can realize the temperature control in the heating system, and adjust the system parameters according to the actual operating conditions to achieve efficient and energy-saving operation of the heating system.

[0034] Step S206: Select a maximum thermal hysteresis time from multiple first thermal hysteresis time, determine the maximum thermal hysteresis time as the second thermal hysteresis time of the main pipeline, and adjust the heating system of the heating secondary pipeline based on the second thermal hysteresis time.

[0035] In the present application, the thermal hysteresis duration of the main pipeline is not directly used as the thermal hysteresis duration of the entire heating system. Instead, the thermal hysteresis duration of the main pipeline is determined based on the thermal hysteresis duration of the branch pipeline, and then the thermal hysteresis duration of the entire heating system is obtained, which can improve the accuracy of the thermal hysteresis duration.

[0036] Through the above steps, the Internet of Things cloud platform obtains the pipeline heating data of the heating secondary pipeline collected by the Internet of Things acquisition terminal, wherein the pipeline heating data at least includes the first heating data of the main pipeline of the heating secondary pipeline and the second heating data of the branch pipeline of the heating secondary pipeline; based on the first heating data, the first change duration corresponding to the maximum temperature change rate of the main pipeline is determined, and based on the second heating data, the second change duration corresponding to the maximum temperature change rate of the branch pipeline is determined, and the first thermal hysteresis duration corresponding to the branch pipeline is determined according to the first change duration and the second change duration; the maximum thermal hysteresis duration is selected from multiple first thermal hysteresis durations, and the maximum thermal hysteresis duration is determined as the second thermal hysteresis duration of the main pipeline, and the heating system of the heating secondary pipeline is adjusted based on the second thermal hysteresis duration. In this way, the pipeline heating data is obtained through the Internet of Things cloud platform, and the temperature change duration of the main pipeline and the branch pipeline is analyzed, so as to accurately determine the thermal hysteresis duration, solve the technical problem of low operating efficiency of the heating system due to inaccurate thermal hysteresis duration, and provide data support for the optimization and adjustment of the heating system.

[0037] In an exemplary embodiment, the process of determining the first change duration corresponding to the maximum temperature change rate of the main pipeline based on the first heating data specifically includes: determining the first water supply temperature of the heat exchange station of the main pipeline and the second water supply temperature of the user entrance of the main pipeline from the first heating data; in the case of determining that the pipeline flow change rate of the main pipeline is the first preset change rate, adjusting the first water supply temperature to the target water supply temperature, monitoring the temperature change difference when the second water supply temperature changes and the change duration corresponding to the temperature change difference, and determining the temperature change rate according to the ratio between the temperature change difference when the second water supply temperature changes and the change duration corresponding to the temperature change difference, and determining the change duration corresponding to the maximum temperature change rate as the first change duration. In this way, the rate of heat energy transfer in the pipeline can be measured more accurately, especially in the case of sudden changes in weather or large fluctuations in heating demand, which helps to quickly adjust the heating strategy and ensure the stability of the user's indoor temperature.

[0038] Among them, the first preset change rate is, for example, 0, and the process of determining the second change duration can refer to the process of determining the first change duration, which will not be repeated here.

[0039] Thermal hysteresis is the time difference for temperature changes in a heating system to propagate from the heat source to the user end. By comparing the temperature change rates at different locations (such as the heat exchange station outlet and the user entrance), this time difference can be calculated to evaluate and optimize the thermal hysteresis performance of the heating system.

[0040] In an exemplary embodiment, the implementation process of determining the first thermal hysteresis time corresponding to the branch pipe according to the first change time and the second change time includes: when it is determined that the second change time is greater than the first change time, determining the first thermal hysteresis time according to the difference between the second change time and the first change time; wherein the first thermal hysteresis time is expressed as follows: t1=t k2max -t k1max ; t1 is the first thermal hysteresis time, t k1max is the first change duration, t k2max This embodiment is particularly suitable for a multi-branch heating network, and can help identify which branch pipes have low heat transfer efficiency, so as to carry out targeted transformation or maintenance and improve the efficiency of the entire heating network.

[0041] In an exemplary embodiment, further, the second thermal hysteresis duration can be grouped according to the pipeline flow of the main pipeline to obtain multiple groups of third thermal hysteresis durations, wherein each group of third thermal hysteresis durations corresponds to a pipeline flow; a correspondence between the pipeline flow and the third thermal hysteresis duration is established according to the multiple groups of third thermal hysteresis durations, and the correspondence is stored. By establishing a correspondence between pipeline flow and thermal hysteresis duration, a dynamic adjustment basis can be provided for the heating system, especially during the peak heating period, the heating strategy can be adjusted according to the real-time pipeline flow to avoid heat energy waste and improve energy efficiency.

[0042] In an exemplary embodiment, the implementation process of adjusting the heating system of the heating secondary pipe based on the second thermal hysteresis time specifically includes: determining the first thermal conductivity of the pipe material of the current heating pipe of the heating system, determining the heating pipe with the second thermal conductivity from the alternative heating pipes, and sending a first prompt message to the target object to prompt the target object to replace the current heating pipe with the heating pipe with the second thermal conductivity, wherein the second thermal conductivity is less than the first thermal conductivity; or, sending a second prompt message to the target object to prompt the target object to add an insulation layer in the current heating pipe. This embodiment not only improves the operating efficiency of the heating system, but also can dynamically adjust the heating strategy according to the real-time changes in the thermal conductivity of the pipe material and the pipe flow, effectively improve the heat transfer efficiency of the pipe, and can also reduce the energy waste caused by heat loss, thereby improving the user's heating experience.

[0043] Among them, the current heating pipeline represents a main pipeline or a branch pipeline.

[0044] In an exemplary embodiment, other technical solutions for adjusting the heating system of the heating secondary pipeline based on the second thermal hysteresis time may be proposed, specifically including: determining the speed adjustment value set in advance for the circulation pump of the heating secondary pipeline; adding the speed adjustment value to the current speed value of the circulation pump to increase the current pipeline flow of the main pipeline. By adjusting the speed of the circulation pump, the heat energy transfer rate of the main pipeline can be flexibly controlled, which has the advantage of rapid response to sudden changes in heating demand, such as a surge in heating demand under extreme weather conditions, and can ensure the stable operation of the heating system and improve user satisfaction.

[0045] Optionally, the above-mentioned circulation pump can promote the circulation of hot water in the secondary heating network to ensure that the heat energy is effectively and evenly distributed to each user end. The functions of the secondary pipeline circulation pump are as follows:

[0046] Maintain water flow: The circulation pump overcomes the resistance in the pipe by providing relative force to maintain the continuous flow of hot water in the secondary pipe network. This is the basis of heat energy transmission. Without sufficient water flow speed, heat cannot be effectively transferred to the user end.

[0047] Adjust water pressure and flow: The circulation pump can adjust its speed or operating status to adjust the water pressure and flow of hot water in the secondary pipe network. This is essential for balancing the heat load between different users and ensuring that each user has access to an appropriate supply of hot water.

[0048] Facilitate heat distribution: The operation of the circulation pump enables hot water to be evenly distributed to each branch of the secondary pipe network. Even in scenarios with a large number of users or complex building layouts, it can ensure balanced distribution of heat energy and avoid overheating or overcooling in certain areas.

[0049] Enhanced system response: In situations where rapid adjustments to the heating load are required, such as when users increase or decrease heating demand, the circulation pump can respond quickly, adjusting the water flow rate and direction to ensure that the system quickly adapts to changes and maintains a stable indoor temperature.

[0050] Reduce thermal hysteresis: By optimizing the operating parameters of the circulation pump, such as increasing the water flow rate, the residence time of hot water in the pipe can be reduced, thereby reducing thermal hysteresis and allowing users to feel temperature changes more quickly.

[0051] 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:

[0052] In an optional embodiment, the present application describes the process of thermal hysteresis measurement through the following content.

[0053] First, select high-precision IoT data collection terminals (such as temperature sensors and flow sensors) to accurately collect various parameters in the secondary pipeline in real time.

[0054] Then, IoT collection terminals are deployed at key locations of the secondary heating pipeline (such as the heat exchange station outlet, user entrance, etc.) to ensure the comprehensiveness and representativeness of data collection.

[0055] Among them, the IoT collection terminal transmits parameters such as temperature and flow in real time to the data center or cloud platform through wireless or wired means. The data center or cloud platform cleans, denoises and calibrates the collected raw data to ensure the accuracy and reliability of the data.

[0056] For the secondary network pipeline, the heat source is the heat exchanger.

[0057] The flow rate of the main water supply pipeline of the second network is Q0, and the branch flows of n buildings are Q 1～ Q n ,

[0058] The supply water temperatures are tg1~tgn, and the return water temperatures are th1~thn.

[0059] Among them, the return water temperature is closely related to the change of the supply water temperature. At the user end, after the hot water is used, the temperature will drop and then return to the heat exchange station through the return water pipe. The change of return water temperature is also affected by thermal hysteresis, that is, the change of water temperature in the return water pipe will also be delayed. This delay can be analyzed by monitoring the rate of change of the return water temperature, which helps to evaluate the thermal efficiency and stability of the overall heating system.

[0060] In this application, the temperature change rate of the secondary water supply main pipe refers to the change rate of the water supply temperature, not the change rate of the return water temperature. Specifically, when the heat exchange station adjusts the temperature of the hot water it outputs, this change will propagate along the secondary water supply main pipe to each user entrance, but due to factors such as the insulation performance of the pipe, the water flow rate, and the distance between the heat source and the user, the change in water temperature will not be immediately reflected at the user entrance, but will only stabilize after a period of time. The temperature change is used to measure the rate at which the water temperature changes over time in this process.

[0061] In contrast, the rate of change of return water temperature describes the speed at which the water temperature changes after use by the user during the process of returning to the heat exchange station. The change of return water temperature is affected by the heat load at the user end and the heat loss of the pipeline itself, which is different from the change path of supply water temperature, so it needs to be considered separately.

[0062] After the two-network balance commissioning is completed, the two-network circulation pump is placed in the fixed-frequency operation mode. When ΔQ0 is 0 and ΔQ1 is 0, ΔQ0 is the periodic flow rate change rate of the pipeline flow of the main pipeline in the fixed-frequency operation mode (i.e., the above-mentioned pipeline flow rate change rate). ΔQ0 is 0, indicating that the pipeline flow of the main pipeline is stable at this time. ΔQ1 is the periodic flow rate change rate of the pipeline flow of the branch pipeline in the fixed-frequency operation mode. ΔQ1 is 0, indicating that the pipeline flow of the branch pipeline is stable at this time. Among them, ΔQ0 being 0 can be understood as the pipeline flow rate change rate being the first preset change rate.

[0063] Increase the secondary water supply temperature by T. At this time, the thermal hysteresis time t1 of Building 1 is:

[0064] t1=t k2max -t k1max .

[0065] t k1max is the time when the temperature change rate of the secondary water supply main pipeline is the largest (i.e., the first change duration mentioned above), t k2max It is the time when the temperature change rate of the branch pipe in Building 1# is the largest (i.e. the second change duration mentioned above).

[0066] Among them, the temperature change rate K1 of the secondary water supply main pipeline and the temperature change rate K2 of the branch pipeline of Building 1 are expressed as follows:

[0067]

[0068] Among them, ΔT0 represents the temperature difference of the water supply temperature change of the main pipeline, ΔT1 represents the temperature difference of the water supply temperature change of the branch pipeline, and Δt is the corresponding change time.

[0069] Based on the above principle, t1~t n , take t1~t n The maximum value t max . It is the thermal hysteresis time when the flow rate of the water supply main pipeline of the second network of the entire secondary pipeline system is Q0.

[0070] Assume that it is monitored that the thermal hysteresis of the secondary heating pipeline is too long, which leads to a significant delay in the change of the temperature at the user's entrance when the heat exchange station adjusts the water supply temperature, affecting the efficiency and accuracy of load forecasting control. For example, the thermal hysteresis may be 1-2 hours, which means that even if the heat source temperature is adjusted quickly, it takes a long time for the user to feel the temperature change. At this time, the heating system can be optimized and adjusted in a targeted manner, such as improving the insulation performance of the pipeline, adjusting the water flow rate, etc., to reduce the impact of thermal hysteresis on load forecasting control, better cope with weather changes, improve the stability of the heating system, and improve the quality of heating services.

[0071] Furthermore, it is also possible to obtain the thermal hysteresis duration under different flow conditions, and on the basis of the above adjustments, establish a dynamic relationship model between flow and thermal hysteresis duration to further optimize the operation strategy of the heating system. For example, according to different outdoor temperatures and user heat load forecasts, adjust the water supply temperature and water flow rate to achieve the best heat energy transfer efficiency, while reducing the impact of thermal hysteresis on system control. This can significantly reduce the thermal hysteresis phenomenon, improve the response speed and control accuracy of the heating system, and thus achieve more efficient and energy-saving operation, providing users with a more stable and comfortable indoor temperature environment. At the same time, the reduction of thermal hysteresis duration also helps to reduce the operating costs of the heating system and improve the overall economic and environmental benefits.

[0072] 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.

[0073] Furthermore, this embodiment also provides a heating control system, which at least includes an Internet of Things cloud platform, a heating secondary pipeline, and an Internet of Things collection terminal installed at an observation position of the heating secondary pipeline, wherein the Internet of Things cloud platform is used to execute the above-mentioned method for determining the thermal hysteresis time of the heating secondary pipeline.

[0074] In this embodiment, a device for determining the thermal hysteresis duration of a heating secondary pipeline 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. As used below, the term "module" can be a combination of software and / or hardware that implements 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.

[0075] Figure 3 : is a structural block diagram of a device for determining the thermal hysteresis duration of a heating secondary pipeline according to an embodiment of the present application, the device comprising:

[0076] An acquisition module 32 is used to acquire pipeline heating data of the heating secondary pipeline collected by the Internet of Things collection terminal, wherein the pipeline heating data at least includes first heating data of the main pipeline of the heating secondary pipeline and second heating data of the branch pipeline of the heating secondary pipeline;

[0077] a determination module 34, configured to determine a first change duration corresponding to when the temperature change rate of the main pipeline is maximum based on the first heat supply data, and to determine a second change duration corresponding to when the temperature change rate of the branch pipeline is maximum based on the second heat supply data, and to determine a first thermal hysteresis duration corresponding to the branch pipeline according to the first change duration and the second change duration;

[0078] The adjustment module 36 is used to select a maximum thermal hysteresis time from multiple first thermal hysteresis time, determine the maximum thermal hysteresis time as the second thermal hysteresis time of the main pipeline, and adjust the heating system of the heating secondary pipeline based on the second thermal hysteresis time.

[0079] Through the above device, the Internet of Things cloud platform obtains the pipeline heating data of the heating secondary pipeline collected by the Internet of Things acquisition terminal, wherein the pipeline heating data at least includes the first heating data of the main pipeline of the heating secondary pipeline and the second heating data of the branch pipeline of the heating secondary pipeline; based on the first heating data, the first change duration corresponding to the maximum temperature change rate of the main pipeline is determined, and based on the second heating data, the second change duration corresponding to the maximum temperature change rate of the branch pipeline is determined, and the first thermal hysteresis duration corresponding to the branch pipeline is determined according to the first change duration and the second change duration; the maximum thermal hysteresis duration is selected from multiple first thermal hysteresis durations, and the maximum thermal hysteresis duration is determined as the second thermal hysteresis duration of the main pipeline, and the heating system of the heating secondary pipeline is adjusted based on the second thermal hysteresis duration. In this way, the pipeline heating data is obtained through the Internet of Things cloud platform, and the temperature change duration of the main pipeline and the branch pipeline is analyzed, so as to accurately determine the thermal hysteresis duration, solve the technical problem of low operating efficiency of the heating system due to inaccurate thermal hysteresis duration, and provide data support for the optimization and adjustment of the heating system.

[0080] In an exemplary embodiment, the determination module is also used to: determine the first water supply temperature of the heat exchange station of the main pipeline and the second water supply temperature of the user inlet of the main pipeline from the first heating data; when it is determined that the pipeline flow change rate of the main pipeline is a first preset change rate, adjust the first water supply temperature to the target water supply temperature, monitor the temperature change difference when the second water supply temperature changes and the change time corresponding to the temperature change difference, and determine the temperature change rate according to the ratio between the temperature change difference when the second water supply temperature changes and the change time corresponding to the temperature change difference, and determine the change time corresponding to the maximum temperature change rate as the first change time.

[0081] In an exemplary embodiment, the determination module is further used to: determine the first thermal hysteresis duration according to the difference between the second change duration and the first change duration when it is determined that the second change duration is greater than the first change duration; wherein the first thermal hysteresis duration is expressed as follows: t1=t k2max -t k1 max ; t1 is the first thermal hysteresis time, t k1max is the first change duration, t k2max is the second change duration.

[0082] In an exemplary embodiment, the determination module is further used to: group the second thermal hysteresis time according to the pipeline flow of the main pipeline to obtain multiple groups of third thermal hysteresis time, wherein each group of third thermal hysteresis time corresponds to a pipeline flow; establish a correspondence between the pipeline flow and the third thermal hysteresis time according to the multiple groups of third thermal hysteresis time, and store the correspondence.

[0083] In an exemplary embodiment, the adjustment module is also used to: determine a first thermal conductivity of a pipe material of a current heating pipe of the heating system, determine a heating pipe with a second thermal conductivity from alternative heating pipes, and send a first prompt message to a target object to prompt the target object to replace the current heating pipe with the heating pipe with the second thermal conductivity, wherein the second thermal conductivity is smaller than the first thermal conductivity; or, send a second prompt message to the target object to prompt the target object to add an insulation layer in the current heating pipe.

[0084] In an exemplary embodiment, the adjustment module is also used to: determine the speed adjustment value set in advance for the circulation pump of the secondary heating pipeline; add the speed adjustment value to the current speed value of the circulation pump to increase the current pipeline flow of the main pipeline.

[0085] 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.

[0086] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0087] S1, obtaining pipeline heating data of a heating secondary pipeline collected by an Internet of Things collection terminal, wherein the pipeline heating data at least includes first heating data of a main pipeline of the heating secondary pipeline and second heating data of a branch pipeline of the heating secondary pipeline;

[0088] S2, determining a first change duration corresponding to when the temperature change rate of the main pipeline is maximum based on the first heat supply data, and determining a second change duration corresponding to when the temperature change rate of the branch pipeline is maximum based on the second heat supply data, and determining a first thermal hysteresis duration corresponding to the branch pipeline according to the first change duration and the second change duration;

[0089] S3, selecting a maximum thermal hysteresis time from multiple first thermal hysteresis time, determining the maximum thermal hysteresis time as the second thermal hysteresis time of the main pipeline, and adjusting the heating system of the heating secondary pipeline based on the second thermal hysteresis time.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program:

[0094] S1, obtaining pipeline heating data of a heating secondary pipeline collected by an Internet of Things collection terminal, wherein the pipeline heating data at least includes first heating data of a main pipeline of the heating secondary pipeline and second heating data of a branch pipeline of the heating secondary pipeline;

[0095] S2, determining a first change duration corresponding to when the temperature change rate of the main pipeline is maximum based on the first heat supply data, and determining a second change duration corresponding to when the temperature change rate of the branch pipeline is maximum based on the second heat supply data, and determining a first thermal hysteresis duration corresponding to the branch pipeline according to the first change duration and the second change duration;

[0096] S3, selecting a maximum thermal hysteresis time from multiple first thermal hysteresis time, determining the maximum thermal hysteresis time as the second thermal hysteresis time of the main pipeline, and adjusting the heating system of the heating secondary pipeline based on the second thermal hysteresis time.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] The above is only a preferred implementation 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 the thermal hysteresis duration of a secondary heating pipeline, characterized in that: Applied to IoT cloud platform, including: Acquire pipeline heating data of the heating secondary pipeline collected by the Internet of Things collection terminal, wherein the pipeline heating data at least includes first heating data of the main pipeline of the heating secondary pipeline and second heating data of the branch pipeline of the heating secondary pipeline; Determine a first change duration corresponding to when the temperature change rate of the main pipeline is maximum based on the first heat supply data, and determine a second change duration corresponding to when the temperature change rate of the branch pipeline is maximum based on the second heat supply data, and determine a first thermal hysteresis duration corresponding to the branch pipeline according to the first change duration and the second change duration; A maximum thermal hysteresis time is selected from a plurality of first thermal hysteresis time periods, the maximum thermal hysteresis time is determined as a second thermal hysteresis time period of the main pipeline, and the heating system of the heating secondary pipeline is adjusted based on the second thermal hysteresis time period.

2. The method according to claim 1, characterized in that: Determining a first change duration corresponding to when the temperature change rate of the main pipeline is maximum based on the first heat supply data includes: Determine a first water supply temperature of a heat exchange station of the main pipeline and a second water supply temperature of a user inlet of the main pipeline from the first heat supply data; When it is determined that the pipe flow change rate of the main pipe is a first preset change rate, the first water supply temperature is adjusted to the target water supply temperature, the temperature change difference when the second water supply temperature changes and the change time corresponding to the temperature change difference are monitored, and the temperature change rate is determined based on the ratio between the temperature change difference when the second water supply temperature changes and the change time corresponding to the temperature change difference, and the change time corresponding to the maximum temperature change rate is determined as the first change time.

3. The method according to claim 1, characterized in that Determining a first thermal hysteresis duration corresponding to the branch pipeline according to the first change duration and the second change duration includes: In the case where it is determined that the second change duration is greater than the first change duration, determining the first thermal hysteresis duration according to a difference between the second change duration and the first change duration; Wherein, the first thermal hysteresis duration is expressed as follows: t1=t k2max -t k1max ; t1 is the first thermal hysteresis time, t k1max is the first change duration, t k2max is the second change duration.

4. The method according to claim 1, characterized in that: The method further comprises: The second thermal hysteresis time is grouped according to the pipeline flow of the main pipeline to obtain multiple groups of third thermal hysteresis time, wherein each group of third thermal hysteresis time corresponds to a pipeline flow; A correspondence between the pipeline flow and the third thermal hysteresis time length is established according to the multiple groups of third thermal hysteresis time lengths, and the correspondence is stored.

5. The method according to claim 1, characterized in that Adjusting the heating system of the secondary heating pipeline based on the second thermal hysteresis time includes: Determine a first thermal conductivity of a pipe material of a current heating pipe of the heating system, determine a heating pipe with a second thermal conductivity from the candidate heating pipes, and send a first prompt message to a target object to prompt the target object to replace the current heating pipe with the heating pipe with the second thermal conductivity, wherein the second thermal conductivity is less than the first thermal conductivity; Alternatively, a second prompt message is sent to the target object to prompt the target object to add a thermal insulation layer in the current heating pipeline.

6. The method according to claim 1, characterized in that Adjusting the heating system of the secondary heating pipeline based on the second thermal hysteresis time includes: Determine the speed adjustment value set in advance for the circulation pump of the secondary heating pipeline; The speed adjustment value is added to the current speed value of the circulation pump to increase the current pipeline flow of the main pipeline.

7. A device for determining the thermal hysteresis duration of a secondary heating pipeline, characterized in that: include: An acquisition module, used to acquire pipeline heating data of the heating secondary pipeline collected by the Internet of Things collection terminal, wherein the pipeline heating data at least includes first heating data of the main pipeline of the heating secondary pipeline and second heating data of the branch pipeline of the heating secondary pipeline; a determination module, configured to determine a first change duration corresponding to when the temperature change rate of the main pipeline is maximum based on the first heat supply data, and to determine a second change duration corresponding to when the temperature change rate of the branch pipeline is maximum based on the second heat supply data, and to determine a first thermal hysteresis duration corresponding to the branch pipeline according to the first change duration and the second change duration; An adjustment module is used to select a maximum thermal hysteresis time from multiple first thermal hysteresis time, determine the maximum thermal hysteresis time as the second thermal hysteresis time of the main pipeline, and adjust the heating system of the heating secondary pipeline based on the second thermal hysteresis time.

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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