A heating system anti-water cross control method, system, device and storage medium

Abstract

This invention provides a method, system, device, and storage medium for preventing cross-contamination in a heating system. The method includes: when a first heating boiler is started, recording the initial start time and acquiring the first water temperature at the heating outlet of a second heating boiler in standby mode at the initial time; for each second heating boiler, acquiring the second water temperature at the heating outlet in real time and recording the current time; based on the first water temperature, the second water temperature, the initial time, and the current time, the temperature change rate of the heating outlet of the second heating boiler after the first heating boiler is started can be obtained, thus determining whether the temperature change (temperature rise) of the heating outlet of the second heating boiler is related to the first heating boiler, thereby determining whether the second heating boiler is cross-contaminating with the first heating boiler. This method can accurately detect cross-contamination and, when cross-contamination occurs, can promptly control the cross-contamination of the second heating boiler, reducing heat loss caused by cross-contamination and ensuring heating efficiency.

Description

Technical Field

[0001] This invention belongs to the field of water heater technology, and in particular relates to a method, system, device and storage medium for preventing cross-flow in heating systems. Background Technology

[0002] Existing combined heating systems typically consist of multiple boilers connected in parallel. The heating outlet of each boiler is connected to the main water circuit. Cross-flow occurs when the water flow at the heating outlet does not circulate along a pre-set path. Instead, the operating boiler sends hot water through the main water circuit into the heating outlet pipe of the standby boiler. At this time, the water in the heating outlet pipe of the standby boiler is cold water, causing some of the heat from the hot water to be absorbed by the cold water, resulting in significant heat loss and low heating efficiency. Summary of the Invention

[0003] In view of this, the present invention provides a method, system, device and storage medium for preventing cross-contamination in a heating system, for real-time detection of whether cross-contamination occurs between heating boilers, so as to perform cross-contamination prevention control.

[0004] A first aspect of the present invention provides a method for preventing cross-contamination in a heating system, comprising multiple heating boilers connected in parallel, the method comprising:

[0005] When the first heating boiler is started, record the initial start time and obtain the first water temperature at the heating outlet of the second heating boiler in standby at the initial time.

[0006] For each of the second heating boilers, the second water temperature at the heating outlet of the second heating boiler is obtained in real time and the current time is recorded;

[0007] The temperature change rate of the heating outlet of the second heating boiler is calculated based on the first water temperature, the second water temperature, the initial time, and the current time to determine whether there is cross-contamination between the second heating boiler and the first heating boiler.

[0008] In the event of cross-contamination, anti-cross-contamination control is implemented for the second heating boiler that is experiencing cross-contamination.

[0009] The heating boiler water flow control method provided by this invention has the following beneficial effects:

[0010] When the first heating boiler is started, the initial start-up time is recorded, and the first water temperature at the heating outlet of the second heating boiler in standby mode is obtained at the initial time. For each second heating boiler, the second water temperature at the heating outlet is obtained in real time, and the current time is recorded. Based on the first water temperature, the second water temperature, the initial time, and the current time, the temperature change rate of the heating outlet of the second heating boiler after the first heating boiler is turned on can be obtained. By correlating the temperature of the heating outlet of the second heating boiler with the start-up of the first heating boiler in time, it can be determined whether the temperature change (temperature rise) of the heating outlet of the second heating boiler is related to the first heating boiler, thereby determining whether the second heating boiler is cross-contaminating with the first heating boiler. This allows for accurate detection of cross-contamination in heating boilers. When cross-contamination occurs, timely anti-cross-contamination control can be implemented for the cross-contamination second heating boiler to reduce heat loss caused by cross-contamination and ensure heating efficiency.

[0011] A second aspect of the present invention provides a heating system comprising multiple heating boilers connected in parallel, the system further comprising a main controller, the main controller comprising:

[0012] The data acquisition module is used to record the initial start-up time when the first heating boiler is started, and to obtain the first water temperature at the heating outlet of the second heating boiler in standby mode at the initial time.

[0013] The data recording module is used to acquire the second water temperature at the heating outlet of each second heating boiler in real time and record the current time.

[0014] The water leakage detection module is used to calculate the temperature change rate of the heating outlet of the second heating boiler based on the first water temperature, the second water temperature, the initial time, and the current time, so as to determine whether there is water leakage between the second heating boiler and the first heating boiler.

[0015] The anti-cross-flow control module is used to prevent cross-flow in the second heating boiler when cross-flow occurs.

[0016] A third aspect of the present invention provides an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the heating system anti-cross-flow control method as described in the first aspect above.

[0017] A fourth aspect of the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the heating system anti-cross-flow control method as described in the first aspect above. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a heating system provided in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of a heating system anti-cross-flow control method provided in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of a heating boiler structure with heating mode and hot water supply mode provided by an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of a heating system provided in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0025] Figure 1 This is a schematic diagram of a heating system, such as... Figure 1 As shown, the heating system includes multiple boilers connected in parallel (specifically boilers 10A, 10B, 10C, 10D, and others not shown), coupler 20, temperature sensor 30, water pump 40, and heat exchanger 50 installed in the target heating environment. The boilers 10, coupler 20, temperature sensor 30, and water pump 40 are all connected to the main controller (…). Figure 1(Not shown in the diagram) The heating outlet pipe 101 of each heating boiler is connected to the main water circuit, meaning multiple heating boilers are connected in parallel on the main water circuit. The main controller detects the actual heating outlet water temperature of the main water circuit through the temperature sensor 30. When the actual heating outlet water temperature meets the heating start-up conditions (e.g., the actual heating outlet water temperature is lower than the set temperature value), the main controller sends a start-up combustion command to at least one heating boiler. The heating boiler that receives the start-up combustion command starts, heats the cold water in the inlet pipe 102 to obtain hot water, and outputs it to the main water circuit through the heating outlet pipe 101. At the same time, the hot water in the main water circuit is transported to the heat exchanger 50 by the water pump 40 for heat exchange. The cold water after heat exchange returns to the main water circuit and then enters the heating boiler through the inlet pipe 102 for heating, forming a heating-heat exchange cycle. This cycle path is the preset path. It should be noted here that, as Figure 1 As shown, the heating outlet pipe 101 and the inlet pipe 102 are respectively connected to the heating supply pipe and the heating return pipe of the main water circuit.

[0026] Cross-flow refers to a situation where the water flow at the heating outlet does not circulate according to the preset path, but instead, the activated heating boiler flows hot water through the main water circuit into the heating outlet pipe 101 of the standby heating boiler. Figure 1 As shown, boiler 10B is the operating boiler. Boiler 10B "squeezes" hot water through the main water circuit into the heating outlet pipe 101 of the standby boiler 10C. At this time, the water in the heating outlet pipe 101 of the standby boiler 10C is cold water, causing some of the heat from the hot water to be absorbed by the cold water. Simultaneously, it may also cause water in the heating outlet pipe 101 of the standby boiler 10C to flow back out of its inlet pipe and re-enter the inlet pipe of boiler 10B. The water flow direction throughout the entire process is as follows: Figure 1 The paths marked with arrows are shown in 1-6. It is evident that cross-contamination of water leads to significant heat loss and low heating efficiency.

[0027] In order to detect whether water is flowing between heating boilers in real time and to control water flow in order to prevent water flow, the present invention provides a method for preventing water flow in a heating system. This method can be executed by the main controller in the heating system. The technical solution of the present invention will be described below through specific embodiments.

[0028] Reference Figure 2 The diagram illustrates a method for preventing cross-contamination in a heating system according to an embodiment of the present invention, which may specifically include the following steps:

[0029] S201. When the first heating boiler is started, record the initial start time and obtain the first water temperature at the heating outlet of the second heating boiler in standby at the initial time.

[0030] All heating boilers are connected to the main controller, and each heating boiler's heating outlet is equipped with a temperature sensor. In this embodiment, the heating boiler that is started is the first heating boiler, and the heating boiler that is in standby is the second heating boiler. The trigger condition for monitoring whether there is cross-contamination between the first and second heating boilers is that any one of the first heating boilers is started.

[0031] When the triggering conditions are met, the initial time of startup is recorded. The initial time is the starting point of the monitoring timeline. At the same time, the temperature of the heating outlet of all other second heating boilers in standby state is read to obtain the first water temperature. The first water temperature is the benchmark value for calculating the temperature change rate.

[0032] S202. For each secondary heating boiler, obtain the second water temperature at the heating outlet of the secondary heating boiler in real time and record the current time.

[0033] For each secondary heating boiler, the temperature of the heating outlet can be collected at a preset collection cycle, and the secondary temperature of the heating outlet and the current time can be read in real time to provide a continuous data stream for calculating the temperature change rate.

[0034] For example, the acquisition cycle can be every 3 seconds.

[0035] S203. Calculate the temperature change rate of the heating outlet of the second heating boiler based on the first water temperature, the second water temperature, the initial time, and the current time, in order to determine whether there is cross-contamination between the second heating boiler and the first heating boiler.

[0036] In existing technologies, cross-contamination is typically detected by checking the water temperature at the outlet of the second heating boiler in standby mode. A rise in the water temperature at the outlet of the second boiler indicates cross-contamination. However, water itself is a conductor of heat. Even without cross-contamination, the heat from the hot water at the outlet of the first heating boiler will gradually transfer to nearby water, causing the temperature at the outlet of the second heating boiler in standby mode to rise, potentially leading to a misjudgment.

[0037] In this embodiment of the invention, a threshold value for the rate of temperature change can be preset. If the calculated rate of temperature change is less than or equal to the threshold value, it is determined that there is no cross-contamination. If the calculated rate of temperature change is greater than the threshold value, it indicates that an external heat source (hot water output from the first heating boiler) is rapidly heating the water in the heating outlet pipe of the second heating boiler, and thus it can be determined that cross-contamination has occurred between the second and first heating boilers. For cases where the water temperature at the heating outlet of the second heating boiler rises due to the thermal conductivity of the water itself, the rate of temperature change S is very small. Therefore, this situation can be filtered out by setting a certain threshold value (greater than S), which can avoid misjudgment of cross-contamination due to normal heat accumulation and improve the accuracy of cross-contamination detection.

[0038] Optionally, the formula for calculating the temperature change rate at the heating outlet of the second heating boiler is:

[0039] ΔT=(Te-Ts) / (td-t0);

[0040] Where ΔT is the temperature change rate of the second heating boiler, Te is the second water temperature, Ts is the first water temperature, td is the current time, and ts is the initial time.

[0041] S204. In the event of cross-contamination, cross-contamination prevention control shall be implemented for the second heating boiler that is experiencing cross-contamination.

[0042] Once cross-contamination of the second heating boiler is confirmed, corresponding anti-cross-contamination control measures can be triggered. Optionally, these measures include sending cross-contamination alarms to users or administrators, valve control, and log recording. Valve control refers to automatically closing the electrically operated shut-off valve connected to the heating circuit of the second heating boiler, physically cutting off the cross-contamination path. Log recordings can include information such as the time of the cross-contamination event and the equipment involved, facilitating subsequent maintenance.

[0043] The heating system anti-crossing control method of this invention, when a first heating boiler is started, records the initial start time and obtains the first water temperature at the heating outlet of a second heating boiler in standby mode at the initial time; for each second heating boiler, the second water temperature at the heating outlet of the second heating boiler is obtained in real time and the current time is recorded; based on the first water temperature, the second water temperature, the initial time, and the current time, the temperature change rate of the heating outlet of the second heating boiler after the first heating boiler is turned on can be obtained. By correlating the temperature of the heating outlet of the second heating boiler with the start-up of the first heating boiler in time, it can be determined whether the temperature change (temperature rise) of the heating outlet of the second heating boiler is related to the first heating boiler, thereby determining whether the second heating boiler is crossing with the first heating boiler. This method can accurately detect cross-flow of heating boilers, and when cross-flow occurs, it can promptly control the second heating boiler that is crossing, reduce the heat loss caused by cross-flow, and ensure heating efficiency.

[0044] In an optional embodiment, before performing S203, the method further includes:

[0045] Determine whether the second temperature is greater than the preset temperature threshold; if so, execute the steps in S203.

[0046] After obtaining the second water temperature of the second heating boiler in real time, it will not be immediately substituted into the formula to calculate the rate of change, but will first be compared with a preset temperature threshold.

[0047] If the second water temperature is less than or equal to the temperature threshold, it means that the water temperature at the heating outlet of the second heating boiler is within a normal, low range. This indicates that there is no significant water leakage. In this case, the process can return to S202 to continue monitoring, thus saving the processor's computing resources.

[0048] If the second water temperature is greater than the temperature threshold, it means that the water temperature at the heating outlet of the second heating boiler in standby mode has reached an abnormal level. It is necessary to initiate a more precise analysis to determine the cause of the excessively high water temperature. Only then will S203 be triggered to calculate the temperature change rate to determine whether the high temperature is caused by water leakage or by other factors (such as the natural rise in ambient temperature).

[0049] It is evident that by setting a temperature threshold and using that threshold to determine whether to initiate water leakage detection, the system's operational efficiency can be improved, its anti-interference capability enhanced, and false judgments reduced.

[0050] In an optional embodiment, when cross-contamination occurs, cross-contamination prevention control is implemented for the second heating boiler, including:

[0051] When cross-contamination occurs, the type of the second heating boiler is determined; if the second heating boiler has both heating and hot water supply modes, it is controlled to switch to hot water supply mode; if the second heating boiler only has heating mode, cross-contamination prevention control is implemented for the second heating boiler according to the workload of the first heating boiler.

[0052] Each boiler can be set with an identifier or configuration that allows the main controller to identify the type of each device.

[0053] Heating boilers with both heating and hot water supply modes are common dual-purpose wall-mounted boilers. They can supply water to radiators / underfloor heating (heating mode) and provide domestic hot water to faucets (hot water supply mode).

[0054] Figure 3 A schematic diagram of a heating boiler with both heating and hot water supply modes is shown. Figure 3 As shown, in heating mode, water pump 31 is activated to transport cold water from inlet A to the boiler for heating. The heated hot water then flows to three-way valve 32, which connects to the heating outlet pipe 101, allowing hot water to be output from heating outlet B for heating. In hot water supply mode, water pump 31 is also activated, but three-way valve 32 is not connected to the heating outlet pipe 101 but to pipe 331 in the heat exchanger inside the boiler. Simultaneously, cold water from inlet C enters pipe 332 in the heat exchanger, exchanging heat with the hot water in pipe 331 to obtain hot water, which is then output from outlet D to supply hot water. Note that outlets B and D are connected to different pipes.

[0055] If the second heating boiler has both heating and hot water supply modes, when it switches to hot water supply mode, its internal three-way valve will activate, connecting the water circuit to the heat exchanger side. This physically cuts off the connection between the second heating boiler and the main water circuit used to transport hot water in the heating system. Even if external hot water enters from the heating outlet B of the second heating boiler, it cannot enter the circulation pipe of the second heating boiler, thus blocking the cross-flow path at the source.

[0056] If the second heating boiler is a heating boiler with only a heating mode, the water circuit cannot be physically disconnected by switching modes. Therefore, in this embodiment, the second heating boiler is controlled to prevent cross-flow based on the working load of the first heating boiler.

[0057] Specifically, the second heating boiler is controlled to prevent cross-contamination based on the operating load of the first heating boiler, including:

[0058] Determine whether the working load of the first heating boiler exceeds the preset load threshold; if so, start the second heating boiler connected to the water supply; if not, control the operation of the water pump in the second heating boiler connected to the water supply to increase the water flow resistance between the second heating boiler connected to the water supply and the first heating boiler.

[0059] If the working load of the first heating boiler exceeds the preset load threshold, it indicates that the load of the first heating boiler has reached a certain level, indicating that the current heating demand is large. The second heating boiler can then be started, allowing it to operate in conjunction with the first heating boiler. The water pump in the started second heating boiler will generate pressure, pushing the water flow from the inlet to the heating outlet, making the pressure inside the heating outlet greater than the external pressure. As a result, hot water from the first heating boiler can no longer enter the second heating boiler through its heating outlet, thus preventing cross-contamination.

[0060] When starting the second heating boiler, the working load of the first and second heating boilers can be set separately according to the actual heating load requirements, and the present invention does not limit this.

[0061] If the working load of the first heating boiler is less than or equal to the preset load threshold, it indicates that the current heating demand is low. If at least two heating boilers are turned on and both boilers are running at a low load, the output power of a single device will decrease, which may lead to a decrease in thermal efficiency. In this case, the combined operation may result in a lower energy utilization rate than when a single device is running, which will cause energy waste. At this time, the system does not need to turn on the burner of the second heating boiler, but controls its water pump to run. When the water pump is running, it will generate a thrust from the inlet to the heating outlet pipe. This thrust will "resist" the water flow from the first heating boiler, thus preventing water leakage while avoiding the energy waste caused by starting the second heating boiler.

[0062] In an optional embodiment, the preset load threshold ranges from 18%Pmax to 22%Pmax, where Pmax is the maximum load of the heating boiler.

[0063] In an optional embodiment, controlling the operation of the water pump in the second boiler with continuous water supply includes:

[0064] The water pump in the second heating boiler, which controls the water flow, operates in a cycle with preset start and stop times. Specifically, two time parameters can be preset: start time (T_on) and stop time (T_off). By adjusting the ratio of T_on and T_off, the system can precisely control the amount of water flow.

[0065] One control cycle = T_on + T_off.

[0066] Within a control cycle, the water pump runs for T_on time and then stops for T_off time, and this cycle repeats continuously.

[0067] Example: Preset start time = 20 seconds, stop time = 30 seconds. Then the water pump will run for 20 seconds, then stop for 30 seconds, then run for 20 seconds again, stop for 30 seconds, and so on, in a loop.

[0068] The water pump itself is also an energy-consuming component. Intermittent operation mode helps to reduce the operating temperature of the water pump motor, reduce the mechanical wear of its continuous operation, thereby extending the service life of the water pump. While meeting the requirements for preventing cross-contamination, it reduces water pump losses and controls the energy consumption caused by water pump operation.

[0069] To clearly illustrate the heating system anti-cross-flow control method of the present invention, the following example is provided. The heating system anti-cross-flow control method may specifically include the following steps:

[0070] Step 1: The main controller detects the actual outlet water temperature of the secondary heating system. When the heating start-up conditions are met, the main controller sends a start-up combustion command to the heating boiler.

[0071] Please refer to Figure 1 Coupler 20 and the left side of the coupler are the secondary side, and the right side of the coupler 20 is the primary side.

[0072] Step 2: When a heating boiler is in the heating process, other heating boilers in standby mode send their current heating water temperature to the main controller.

[0073] Step 3: The main controller determines whether there is water leakage between the heating boilers.

[0074] Cross-flow here refers to water from one boiler flowing into another boiler whose pump is not running, driven by the pump itself. The specific detection method is as follows:

[0075] Step 3.1: The main controller records the actual outlet water temperature Ts of each heating boiler on the primary side before the system is started.

[0076] Step 3.2: The main controller determines whether a heating boiler is currently burning and heating; when a heating boiler is detected, the current time is recorded as t0.

[0077] Step 3.3: If a heating furnace is heating, start counting and record the calculation time value td in real time;

[0078] Step 3.4: If a heating boiler is heating, record the actual outlet water temperature Te of the heating boiler in standby mode in real time.

[0079] The time value td and the actual outlet water temperature Te for heating are constantly updated.

[0080] Step 3.5: When it is detected that the rate of change of the actual outlet water temperature of the heating boiler in standby state is greater than the specified value ΔT within a unit time, it is determined that there is a water leakage phenomenon between the primary heating boilers.

[0081] The rate of change of the actual outlet water temperature for heating is ΔT = (Te - Ts) / (td - t0).

[0082] Step 3.6: If it is determined that there is water leakage between heating boilers, record the address of the heating boiler that is affected by the leakage.

[0083] Step 4: If it is determined that there is water leakage between the primary heating boilers, the main controller can execute the following methods to resolve the water leakage problem:

[0084] Step 4.1: The main controller communicates with the heating boiler to determine whether the heating boiler connected to the water supply system has both heating and hot water supply modes.

[0085] If only the heating mode is available, the boiler with the cross-connected water supply will only have a heating water circuit and no bathroom water circuit; if both heating and hot water modes are available, the boiler with the cross-connected water supply will be equipped with a three-way valve, which can switch from heating mode to hot water mode.

[0086] If the heating boiler has both heating and hot water supply modes, the three-way valve of the boiler that is experiencing water leakage can be controlled to switch it from heating mode to hot water supply mode, thus solving the water leakage problem; however, if the heating boiler only has a heating mode, proceed to step 4.2.

[0087] Step 4.2: The main controller determines whether the average power of a single boiler is greater than 20%. If any boiler has an average power of greater than 20%, the main controller reduces the heating load of that boiler through load adjustment, and the freed-up load is output by the boiler that is being cross-connected, that is, the boiler that is being cross-connected starts to heat normally, thereby starting the boiler water pump to counteract the cross-connection problem; however, if no boiler has an average power of greater than 20%, proceed to step 4.3.

[0088] Step 4.3: The main controller sends a command to the boiler that is being cross-connected with water, causing the water pump to run intermittently for n seconds and then stop for m seconds, in order to prevent the cross-connection of water.

[0089] The values ​​of n and m range from 2 to 30 seconds, depending on the specific system requirements.

[0090] It should be noted that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0091] Corresponding to the above-mentioned method for preventing cross-contamination in heating systems, this embodiment of the invention also provides a heating system in which multiple heating boilers are connected in parallel. The system includes a main controller, as described above. Figure 4 The diagram illustrates a main controller in a heating system according to an embodiment of the present invention. The main controller includes:

[0092] The data acquisition module 401 is used to record the initial start-up time when the first heating boiler is started, and to obtain the first water temperature at the heating outlet of the second heating boiler in standby mode at the initial time.

[0093] The data recording module 402 is used to acquire the second water temperature at the heating outlet of each second heating boiler in real time and record the current time.

[0094] The water leakage detection module 403 is used to calculate the temperature change rate of the heating outlet of the second heating boiler based on the first water temperature, the second water temperature, the initial time and the current time, so as to determine whether there is water leakage between the second heating boiler and the first heating boiler.

[0095] The anti-cross-flow control module 404 is used to prevent cross-flow in the second heating boiler when cross-flow occurs.

[0096] Optionally, the formula for calculating the temperature change rate at the heating outlet of the second heating boiler is:

[0097] ΔT=(Te-Ts) / (td-t0);

[0098] Wherein, ΔT is the temperature change rate of the second heating furnace, Te is the second water temperature, Ts is the first water temperature, td is the current time, and ts is the initial time.

[0099] Optionally, the main controller further includes:

[0100] The judgment module is used to determine whether the second temperature is greater than the preset temperature threshold; if so, the contents of the water leakage detection module 403 are executed.

[0101] Optionally, the anti-cross-water control module 404 includes:

[0102] The type determination submodule is used to obtain the type of the second heating boiler involved in the water leakage when water leakage occurs.

[0103] The first control submodule is used to control the second heating boiler to switch to the hot water supply mode if the second heating boiler is a heating boiler with a heating mode and a hot water supply mode.

[0104] The second control submodule is used to control the second heating boiler to prevent cross-flow of water based on the workload of the first heating boiler if the second heating boiler is a heating boiler with only a heating mode.

[0105] Optionally, the second control submodule includes:

[0106] The judgment unit is used to determine whether the working load of the first heating boiler is greater than a preset load threshold; if yes, the start-up unit is executed; if no, the water pump control unit is executed.

[0107] A start-up unit for starting the second heating boiler that is connected to the water supply system;

[0108] A water pump control unit is used to control the operation of the water pump in the second heating boiler that is connected to the first heating boiler, so as to increase the water flow resistance between the second heating boiler and the first heating boiler.

[0109] Optionally, the preset load threshold ranges from 18%Pmax to 22%Pmax, where Pmax is the maximum load of the heating boiler.

[0110] Optionally, the water pump control unit is used for:

[0111] The water pump in the second heating boiler, which controls the water flow, operates in a cycle with preset start and stop times.

[0112] The present invention provides a heating system that uses a boiler anti-cross-flow control system to achieve the steps in the aforementioned embodiments of the anti-cross-flow control methods for heating systems.

[0113] It should be noted that the module division in the various boiler anti-crossing water control systems provided in the above embodiments is illustrative and only represents a logical functional division. In actual implementation, other division methods may also be used. Furthermore, the functional modules in the various embodiments of this invention can be integrated into a single processor, exist as separate physical entities, or be integrated into a single module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0114] If the integrated module is implemented as a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the technical solution of the embodiments of the present invention can be embodied in the form of a computer program product, which is stored in a computer storage medium and includes several instructions to cause an electronic device or processor to execute all or part of the steps of the methods in the various embodiments of the present invention. The aforementioned computer storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0115] Furthermore, the boiler anti-crossing water control system and the heating system anti-crossing water control method provided in the above embodiments belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.

[0116] Reference Figure 5 The diagram illustrates an electronic device according to an embodiment of the present invention. Figure 5 As shown, the electronic device in this embodiment of the invention includes: a processor, a memory, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps in the above-described embodiment of the heating system anti-cross-flow control method. Alternatively, when the processor executes the computer program, it implements the functions of each module in the above-described embodiment of the heating boiler anti-cross-flow control system.

[0117] For example, the computer program may be divided into one or more modules, which are stored in the memory and executed by the processor to complete this application. The one or more modules may be a series of computer program instruction segments capable of performing a specific function, which can be used to describe the execution process of the computer program in the electronic device.

[0118] The electronic device may be a desktop computer, a cloud server, or other computing device. The electronic device may include, but is not limited to, a processor and memory. Those skilled in the art will understand that... Figure 5 This is merely one example of an electronic device and does not constitute a limitation on the electronic device. It may include more or fewer components than illustrated, or combine certain components, or different components. For example, the electronic device may also include input / output devices, network access devices, buses, etc.

[0119] The processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0120] The memory can be an internal storage unit of the electronic device, such as a hard drive or RAM. Alternatively, it can be an external storage device, such as a plug-in hard drive, Smart Media Card (SMC), Secure Digital (SD) card, Flash Card, etc. Furthermore, the memory can include both internal and external storage units. The memory is used to store the computer program and other programs and data required by the electronic device. The memory can also be used to temporarily store data that has been output or will be output.

[0121] This invention also discloses an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the heating system anti-cross-flow control method as described in the foregoing embodiments.

[0122] This invention also discloses a computer-readable storage medium storing a computer program that, when executed by a processor, implements the heating system anti-cross-flow control method as described in the foregoing embodiments.

[0123] This invention also discloses a computer program product that, when run on a computer, causes the computer to execute the heating system anti-crossing water control method described in the foregoing embodiments.

[0124] The embodiments described above are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for preventing cross-contamination in a heating system, wherein the heating system comprises multiple heating boilers connected in parallel, characterized in that, The method includes: When the first heating boiler is started, record the initial start time and obtain the first water temperature at the heating outlet of the second heating boiler in standby at the initial time. For each of the second heating boilers, the second water temperature at the heating outlet of the second heating boiler is obtained in real time and the current time is recorded; The temperature change rate of the heating outlet of the second heating boiler is calculated based on the first water temperature, the second water temperature, the initial time, and the current time to determine whether there is cross-contamination between the second heating boiler and the first heating boiler. In the event of cross-contamination, anti-cross-contamination control is implemented for the second heating boiler that is experiencing cross-contamination.

2. The method as described in claim 1, characterized in that, The step of calculating the temperature change rate of the heating outlet of the second heating boiler based on the first water temperature, the second water temperature, the initial time, and the current time, in order to determine whether there is cross-contamination between the second heating boiler and the first heating boiler, includes: When the temperature change rate exceeds a threshold value, it is determined that water leakage has occurred between the second heating boiler and the first heating boiler; wherein... The formula for calculating the temperature change rate at the heating outlet of the second heating boiler is as follows: ΔT=(Te-Ts) / (td-t0); Wherein, ΔT is the temperature change rate of the second heating furnace, Te is the second water temperature, Ts is the first water temperature, td is the current time, and ts is the initial time.

3. The method as described in claim 1, characterized in that, Before calculating the temperature change rate of the heating outlet of the second heating boiler based on the first water temperature, the second water temperature, the initial time, and the current time to determine whether there is cross-contamination between the second heating boiler and the first heating boiler, the method further includes: Determine whether the second water temperature is greater than a preset temperature threshold; If so, the step of calculating the temperature change rate of the heating outlet of the second heating boiler based on the first water temperature, the second water temperature, the initial time, and the current time is performed to determine whether there is cross-contamination between the second heating boiler and the first heating boiler.

4. The method according to any one of claims 1-3, characterized in that, The method of preventing cross-contamination of the second heating boiler when cross-contamination occurs includes: When cross-contamination occurs, the type of the second boiler involved in the cross-contamination is determined; If the second heating boiler is a heating boiler with both heating mode and hot water supply mode, control the second heating boiler to switch to hot water supply mode; If the second heating boiler is a heating boiler with only a heating mode, then the second heating boiler is controlled to prevent cross-flow based on the working load of the first heating boiler.

5. The method as described in claim 4, characterized in that, The step of controlling the second heating boiler to prevent cross-contamination based on the working load of the first heating boiler includes: Determine whether the working load of the first heating boiler is greater than the preset load threshold; If so, start the second heating boiler that is connected to the water supply; If not, control the operation of the water pump in the second boiler with interconnected water supply to increase the water flow resistance between the second boiler and the first boiler.

6. The method as described in claim 5, characterized in that, The preset load threshold ranges from 18%Pmax to 22%Pmax, where Pmax is the maximum load of the heating boiler.

7. The method as described in claim 5, characterized in that, The operation of the water pump in the second heating boiler that controls the water supply includes: The water pump in the second heating boiler, which controls the water flow, operates alternately with preset start and stop times.

8. A heating system, characterized in that, The heating system includes multiple heating boilers connected in parallel, and also includes a main controller, which includes: The data acquisition module is used to record the initial start-up time when the first heating boiler is started, and to obtain the first water temperature at the heating outlet of the second heating boiler in standby mode at the initial time. The data recording module is used to acquire the second water temperature at the heating outlet of each second heating boiler in real time and record the current time. The water leakage detection module is used to calculate the temperature change rate of the heating outlet of the second heating boiler based on the first water temperature, the second water temperature, the initial time, and the current time, so as to determine whether there is water leakage between the second heating boiler and the first heating boiler. The anti-cross-flow control module is used to prevent cross-flow in the second heating boiler when cross-flow occurs.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the heating system anti-cross-flow control method as described in any one of claims 1-7.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the heating system anti-cross-flow control method as described in any one of claims 1-7.

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