Combined heating method and system for multi-heat source hot water system

Abstract

The present invention relates to the field of heating technology, and in particular to a combined heating method and system for a multi-heat source hot water system, the method comprising: arranging a thermometer, a flow meter and a single damper at corresponding positions in the combined heating system; adjusting the opening state of the single damper according to the size of the single flow value measured by the single flow meter; determining whether to reduce the rotation speed of a primary network circulation pump according to the number of opened single dampers; opening or closing a heat source valve according to the heat source temperature measured by the heat source thermometer, and determining whether to reduce the rotation speed of the primary network circulation pump according to the number of opened heat source valves; determining whether to increase the rotation speed of the primary network circulation pump according to the heating temperature measured by the secondary network thermometer; the present invention adopts the above method to effectively improve the thermal energy utilization efficiency according to the heat demand of the combined heating system, and effectively improve the practicality of the combined heating system of the multi-heat source hot water system while effectively adjusting hydraulic imbalance.

Description

Technical Field

[0001] The present invention relates to the field of heating technology, and in particular to a combined heating method and system for a multi-heat source hot water system. Background Art

[0002] Multi-source combined heating refers to a heating system in which multiple heat sources share a common pipe network and operate in unison. This system improves heating efficiency and reduces heat loss. Due to the large number of heat sources, the overall heating safety of the system is ensured, ensuring that failures in individual heat source boilers will not affect the heating capacity of the entire system. Configuring a corresponding ring network system can improve the overall heating backup capacity of the system. Hydraulic imbalance is a common problem in heating pipe networks. This refers to the discrepancy between the actual flow rate and the required flow rate for each heat user in the hot water heating system. This inconsistency can lead to temperature differences between users, affecting heating quality and user comfort. Better regulation of multi-source heating and minimizing hydraulic imbalance in the heating pipe network can significantly improve heating efficiency and reduce environmental pollution.

[0003] Chinese Patent Publication No.: CN118347330A. Disclosed is an energy supply system and method for interconnecting multiple heat source points. The invention discloses an energy supply system and method for interconnecting multiple heat source points. The energy supply system for interconnecting multiple heat source points includes multiple heat source points; each heat source point is provided with a mobile phase-change heat storage device, a heating device and a fixed heat storage device; the mobile phase-change heat storage device is used to transport the excess heat energy in the heat source point where it is located to the fixed heat storage devices of other low-temperature heat source points, so as to achieve heat balance transportation scheduling among multiple heat source points; when the heat energy provided by the mobile phase-change heat storage device is less than the heat energy required by the low-temperature heat source point, the heating device provides heat energy to the low-temperature heat source point; and when the heat energy provided by the heating device is greater than the heat energy required by the low-temperature heat source point, the excess heat energy is stored in the fixed heat storage device.

[0004] Chinese Patent Authorization Publication Number: CN103605837B. A method for analyzing and determining the accessibility of a multi-heat source annular pipe network and its improvement method are disclosed. This invention discloses a method for analyzing and determining the accessibility of a multi-heat source annular pipe network and its improvement method. This analysis and determination method, based on the determination of the pipe network structural parameters and operating conditions, quantitatively analyzes whether the circulating pressure head provided by each heat source can meet the required pressure head required for the heat network to achieve a predetermined flow distribution under these operating conditions, thereby determining the accessibility of the pipe network under these operating conditions. Based on the results of the accessibility analysis and determination, the structural parameters of the annular pipe network, including pipe diameters and circulating water pump heads, are adjusted in a certain order so that its accessibility can simultaneously meet the requirements of various operating conditions. This invention utilizes the established accessibility analysis method for a multi-heat source annular pipe network to intuitively determine the accessibility of the pipe network and the main factors affecting accessibility. After the final pipe diameter and circulating water pump adjustments, the pipe network's accessibility under various operating conditions can meet the requirements.

[0005] It can be seen that the above technical solution has the following problems: it cannot well regulate the heat supply of the heat source in the heating network, and it cannot regulate the hydraulic imbalance between the monomers in the heating network. Summary of the Invention

[0006] To this end, the present invention provides a combined heating method and system for a multi-heat source hot water system to overcome the problem in the prior art that the heat supply of the heat source in the heating network cannot be well adjusted, and the hydraulic imbalance between the units in the heating network cannot be adjusted.

[0007] In one aspect, the present invention provides a combined heating method for a multi-heat source hot water system, comprising:

[0008] Heat source thermometers and heat source valves are installed at the intersections of several heat sources and the primary heating network, secondary network thermometers are installed on the outlet side of the secondary heating network of the heat exchanger, and single flow meters and single dampers are installed in front of single valves;

[0009] adjusting the opening state of the monomer damper according to the size of the monomer flow value measured by the monomer flow meter;

[0010] Determining whether to reduce the speed of the primary network circulation pump according to the number of opened single dampers;

[0011] opening or closing the heat source valve according to the heat source temperature measured by the heat source thermometer, and determining whether to reduce the speed of the primary network circulation pump according to the number of times the heat source valve is opened;

[0012] Determining whether to increase the rotation speed of the primary network circulation pump according to the heating temperature measured by the secondary network thermometer;

[0013] Among them, the open state includes a fully open state and a semi-open state; the heat exchanger is arranged between the primary heating pipe network and the secondary heating pipe network; the primary heating pipe network and the secondary heating pipe network exchange heat through the heat exchanger.

[0014] Furthermore, the step of adjusting the opening state of the single damper according to the size of the single flow value measured by the single flow meter includes:

[0015] determining whether to open the single damper according to a comparison result between the single flow value and a single preset flow value;

[0016] Sorting the monomer flow values, determining a minimum monomer flow value, and subtracting each monomer flow value from the minimum monomer flow value to obtain a flow value difference;

[0017] The opening state of the single damper corresponding to the flow value difference is adjusted according to a comparison result of the flow value difference and a preset difference.

[0018] Furthermore, whether to open the single damper is determined according to the comparison result between the single flow value and the single preset flow value, wherein:

[0019] If the single flow rate value is greater than the single preset flow rate value, it is determined to open the single damper;

[0020] If the single flow value is less than or equal to the single preset flow value, it is determined to close the single damper;

[0021] The preset flow rate value of the single unit is positively correlated with the diameter of the single unit heating pipe.

[0022] Furthermore, the opening state of the single damper corresponding to the flow value difference is adjusted according to the comparison result of the flow value difference and the preset difference, wherein,

[0023] If the flow value difference is greater than the preset difference, the opening state of the single damper is a fully open state;

[0024] If the flow value difference is less than or equal to the preset difference, the opening state of the single damper is a semi-open state;

[0025] The preset difference is positively correlated with the diameter of the single heating pipe.

[0026] Furthermore, if the number of opened single dampers is greater than the preset number of dampers, it is determined to reduce the power of the primary network circulation pump;

[0027] The number of the preset dampers is positively correlated with the number of the individual heating pipes.

[0028] Furthermore, the heat source valve is opened or closed according to the comparison result between the heat source temperature and the preset primary network temperature, wherein,

[0029] If the heat source temperature is greater than the preset primary network temperature, it is determined to open the heat source valve;

[0030] If the heat source temperature is less than or equal to the preset primary network temperature, it is determined to close the heat source valve;

[0031] Wherein, the preset primary network temperature is positively correlated with the number of single dampers.

[0032] Furthermore, whether to reduce the rotation speed of the primary network circulation pump is determined based on the number of opened heat source valves and the preset number of valves, wherein:

[0033] If the number of heat source valves opened is greater than the preset number of valves, determining to reduce the speed of the primary network circulation pump;

[0034] The number of preset valves is positively correlated with the number of heat sources.

[0035] Furthermore, if the heating temperature is lower than the preset heating temperature, it is determined to increase the rotation speed of the primary network circulation pump;

[0036] The preset heating temperature is positively correlated with the number of heat sources.

[0037] In another aspect, the present invention provides a combined heating system of a multi-heat source hot water system, comprising:

[0038] Several heat sources for providing thermal energy;

[0039] A primary heating pipe network module, which is connected to the heat source and is used to transmit the heat energy generated by the heat source and regulate the flow of the liquid medium in the primary heating pipe network;

[0040] a heat exchanger connected to the primary heating pipe network for exchanging heat energy;

[0041] A secondary heating pipe network module, connected to the heat exchanger, for transmitting heat energy in the heat exchanger and regulating the flow of the liquid medium in the primary heating pipe network;

[0042] The monomer regulating modules are respectively connected to the primary heating pipe network module and the secondary heating pipe network module, and are used to transmit heat energy in the secondary heating pipe network and regulate the flow between the monomer regulating modules.

[0043] Furthermore, the monomer adjustment module includes:

[0044] Several monomer flow meters, connected to the secondary heating pipe network, for monitoring the flow rate flowing into the monomers;

[0045] A plurality of monomer dampers are connected to the monomer flow meter and are used to adjust the flow of the monomer flowing into the monomer.

[0046] Compared with the existing technology, the beneficial effect of the present invention is that single dampers are set at the positions of the household branch pipes at different floor heights. When the household flow on the lower floors increases, the single dampers are opened to increase the household resistance on the lower floors, which is conducive to the flow of liquid media to the higher floors. While effectively adjusting hydraulic imbalance, it effectively improves the practicality of the combined heating system of the multi-heat source hot water system.

[0047] Furthermore, by setting the single damper to a stepped opening state, the adjustment accuracy of the single damper is effectively improved. While effectively solving the hydraulic imbalance problem, the practicality of the combined heating system of the multi-heat source hot water system is further improved.

[0048] Furthermore, by monitoring the temperature in the primary heating network, the opening status of the heat source valves, and the number of single dampers, the speed of the primary network circulation pump is adjusted in time to adjust the flow of the liquid medium in the primary heating network. According to the heat demand of the combined heating system of the multi-heat source hot water system, the thermal energy utilization efficiency is effectively improved, and the practicality of the combined heating system of the multi-heat source hot water system is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is a schematic flow chart of a combined heating method for a multi-heat source hot water system according to the present invention;

[0050] Figure 2 This is a schematic structural diagram of a combined heating system of a multi-heat source hot water system according to the present invention;

[0051] Figure 3 It is a front view of a single damper according to an embodiment of the present invention;

[0052] Figure 4 is a side view of a single damper according to an embodiment of the present invention;

[0053] Among them: 1, single damper; 2, pipe; 3, first damping area; 4, second damping area; 5, sliding rod; 6, inner cavity. DETAILED DESCRIPTION

[0054] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention.

[0055] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0056] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0057] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0058] See also Figure 1 As shown, it is a schematic flow diagram of a combined heating method for a multi-heat source hot water system of the present invention, a combined heating method for a multi-heat source hot water system, comprising:

[0059] Step S1: Install heat source thermometers and heat source valves at the intersections of several heat sources and the primary heating network, install a secondary network thermometer on the outlet side of the secondary heating network of the heat exchanger, and install a single flow meter and a single damper at the front end of the single valve;

[0060] Step S2, adjusting the opening state of the single damper according to the single flow value measured by the single flow meter;

[0061] Step S3, determining whether to reduce the speed of the primary network circulation pump according to the number of opened single dampers;

[0062] Step S4, opening or closing the heat source valve according to the heat source temperature measured by the heat source thermometer, and determining whether to reduce the speed of the primary network circulation pump according to the number of heat source valves opened;

[0063] Step S5, determining whether to increase the speed of the primary network circulation pump according to the heating temperature measured by the secondary network thermometer;

[0064] Among them, the open state includes a fully open state and a semi-open state; the heat exchanger is arranged between the primary heating pipe network and the secondary heating pipe network; the primary heating pipe network and the secondary heating pipe network exchange heat through the heat exchanger.

[0065] Please cooperate Figure 3 See Figure 4 As shown, they are respectively a front view of a single damper according to an embodiment of the present invention and a side view of a single damper according to an embodiment of the present invention, the single damper 1 includes a first damping area 3, a second damping area 4, a sliding rod 5 and an inner cavity 6; wherein, the single damper 1 is arranged on the pipe 2; when the single damper 1 is in a closed state, the first damping area 3 and the second damping area 4 are in the inner cavity 6, and the first damping area 3 and the second damping area 4 can slide in the pipe 2 and the inner cavity 6 along the sliding rod 5.

[0066] When the single damper 1 is in a semi-open state, the first damping area 3 enters the pipe 2 . When the single damper 1 is in a fully open state, the first damping area 3 and the second damping area 4 enter the pipe 2 .

[0067] Specifically, in step S2, the step of adjusting the opening state of the single damper according to the size of the single flow value measured by the single flow meter includes:

[0068] Step S21, determining whether to open the single damper according to the comparison result of the single flow value and the single preset flow value;

[0069] Step S22, sorting the monomer flow values, determining the minimum monomer flow value, and subtracting each monomer flow value from the minimum monomer flow value to obtain a flow value difference;

[0070] Step S23 , adjusting the opening state of the single damper corresponding to the flow value difference according to the comparison result of the flow value difference and the preset difference.

[0071] Specifically, whether to open the single damper is determined according to the comparison result between the single flow value and the single preset flow value, wherein:

[0072] If the single flow value is greater than the single preset flow value, it is determined that the single damper is opened;

[0073] If the single flow value is less than or equal to the single preset flow value, it is determined to close the single damper;

[0074] Example 1: In this embodiment, the preset flow rate value of a single unit is 0.1 cubic meter per hour. If the single unit flow rate value is 0.2 cubic meter per hour, which is greater than the preset flow rate value of 0.1 cubic meter per hour, it is determined that the single unit damper is opened.

[0075] If the single flow rate value of 0.05 cubic meters per hour is less than the single preset flow rate value of 0.1 cubic meters per hour, it is determined to close the single damper.

[0076] Among them, the single preset flow value is positively correlated with the diameter of the single heating pipe.

[0077] It can be understood that the diameter of a single heating pipe is determined according to the designed heating flow rate. The larger the pipe diameter, the greater the flow rate, and the larger the single preset flow rate value.

[0078] Optionally, when the diameter of the single heating pipe is 25 mm, the single preset flow rate value is 0.5 cubic meters per hour;

[0079] When the diameter of a single heating pipe is 50 mm, the preset flow rate of the single pipe is 2 cubic meters per hour;

[0080] When the diameter of a single heating pipe is 80 mm, the single preset flow rate value is 8 cubic meters per hour.

[0081] Specifically, the opening state of the single damper corresponding to the flow value difference is adjusted according to the comparison result between the flow value difference and the preset difference, wherein,

[0082] If the flow value difference is greater than the preset difference, the opening state of the single damper is the fully open state;

[0083] If the flow value difference is less than or equal to the preset difference, the opening state of the single damper is half-open;

[0084] Example 2: Based on Example 1, this example differs from it in that the preset difference is 0.1 cubic meter per hour. If the flow rate difference of 0.2 cubic meter per hour is greater than the preset difference of 0.1 cubic meter per hour, the opening state of the single damper is fully open.

[0085] If the flow value difference of 0.5 cubic meters per hour is less than the preset difference of 0.1 cubic meters per hour, the opening state of the single damper is a semi-open state.

[0086] Among them, the preset difference is positively correlated with the diameter of the single heating pipe.

[0087] It can be understood that the diameter of a single heating pipe is determined according to the designed heating flow rate. The larger the pipe diameter, the greater the flow rate and the greater the preset difference.

[0088] Optionally, when the diameter of a single heating pipe is 25 mm, the preset difference is 0.1 cubic meters per hour;

[0089] When the diameter of a single heating pipe is 50 mm, the default difference is 0.3 cubic meters per hour;

[0090] When the diameter of a single heating pipe is 80 mm, the preset difference is 0.5 cubic meters per hour.

[0091] Specifically, if the number of opened single dampers is greater than the preset number of dampers, it is determined that the power of the primary network circulation pump is reduced;

[0092] Example 3: Based on Example 2, this example differs from it in that the preset number of dampers is 10. If the number of opened single dampers is 15, which is greater than the preset number of dampers, it is determined to reduce the power of the primary network circulation pump.

[0093] Among them, the number of preset dampers is positively correlated with the number of single heating pipes.

[0094] It can be understood that each single heating pipe is correspondingly provided with a single damper. The larger the number of single heating pipes, the larger the number of single dampers, the more pipes need to be adjusted, and the larger the number of preset dampers.

[0095] Optionally, when the number of single heating pipes is 10, the number of preset dampers is 6;

[0096] When the number of single heating pipes is 15, the preset number of dampers is 8;

[0097] When the number of single heating pipes is 20, the preset number of dampers is 10.

[0098] Specifically, the heat source valve is opened or closed according to the comparison result between the heat source temperature and the preset primary network temperature, wherein,

[0099] If the heat source temperature is greater than the preset primary network temperature, the heat source valve is opened;

[0100] If the heat source temperature is less than or equal to the preset primary network temperature, the heat source valve is closed;

[0101] Example 4: Based on Example 3, this example differs from Example 3 in that the preset primary network temperature is 80 degrees Celsius. If the heat source temperature is 90 degrees Celsius, which is greater than the preset primary network temperature of 80 degrees Celsius, the heat source valve is determined to be opened.

[0102] If the heat source temperature is 70 degrees Celsius, which is greater than the preset primary network temperature of 80 degrees Celsius, the heat source valve is determined to be closed.

[0103] Among them, the preset primary network temperature is positively correlated with the number of single dampers.

[0104] It is understandable that, under the same external environment, the more single dampers there are, the greater the required heat energy and the higher the preset primary network temperature.

[0105] Optionally, when the number of single dampers is 10, the preset primary network temperature is 60 degrees Celsius;

[0106] When the number of single dampers is 15, the preset primary network temperature is 70 degrees Celsius;

[0107] When the number of single dampers is 20, the preset primary network temperature is 80 degrees Celsius.

[0108] Specifically, whether to reduce the speed of the primary network circulation pump is determined based on the number of heat source valves opened and the preset number of valves, wherein:

[0109] If the number of heat source valves opened is greater than the preset number of valves, it is determined that the speed of the primary network circulation pump should be reduced;

[0110] Example 5: Based on Example 4, this example is different from it in that the preset number of valves is 3. If the number of heat source valves opened is 4, which is greater than the preset number of valves 3, it is determined to reduce the speed of the primary network circulation pump.

[0111] The number of preset valves is positively correlated with the number of heat sources.

[0112] It is understandable that the greater the number of heat sources that can provide thermal energy, the more options there are for supplying energy to the combined heating system, and the greater the number of preset valves.

[0113] Optionally, when the number of heat sources is 3, the number of preset valves is 2;

[0114] When the number of heat sources is 5, the preset number of valves is 3;

[0115] When the number of heat sources is 7, the preset number of valves is 4.

[0116] Specifically, if the heating temperature is lower than the preset heating temperature, it is determined to increase the speed of the primary network circulation pump;

[0117] Example 6: Based on Example 5, this example is different from it in that the preset heating temperature is 60 degrees Celsius. If the heating temperature is 58 degrees Celsius, which is lower than the preset heating temperature of 60 degrees Celsius, it is determined to increase the speed of the primary network circulation pump.

[0118] Among them, the preset heating temperature is positively correlated with the number of heat sources.

[0119] It is understandable that the number of heat sources is calculated based on the designed heating capacity. The more heat sources that can provide thermal energy, the more options there are for the combined heating system to supply energy, and the higher the preset heating temperature.

[0120] Optionally, when the number of heat sources is 3, the preset heating temperature is 60 degrees Celsius;

[0121] When the number of heat sources is 5, the preset heating temperature is 70 degrees Celsius;

[0122] When the number of heat sources is 7, the preset heating temperature is 80 degrees Celsius.

[0123] See also Figure 2 As shown, it is a structural schematic diagram of the combined heating system of the multi-heat source hot water system of the present invention, including:

[0124] Several heat sources for providing thermal energy;

[0125] The primary heating network module is connected to the heat source to transmit the heat energy generated by the heat source and regulate the flow of the liquid medium in the primary heating network;

[0126] A heat exchanger connected to the primary heating network for heat energy exchange;

[0127] The secondary heating network module is connected to the heat exchanger to transfer heat energy in the heat exchanger and regulate the flow of the liquid medium in the primary heating network;

[0128] The single regulating module is connected to the primary heating pipe network module and the secondary heating pipe network module respectively, and is used to transmit heat energy in the secondary heating pipe network and regulate the flow between each single regulating module.

[0129] The flow rate of the liquid medium is also related to the soluble gas in the heat source;

[0130] In practice, when there is a large amount of soluble gas in the heat source, the soluble gas will precipitate when the temperature of the liquid medium decreases, and the flow rate of the liquid medium flowing through the heat exchanger will decrease accordingly. In this solution, the monitored flow rate is the reduced flow rate. For this reason, the flow meters of this application are all set on the secondary heating pipeline network to measure the flow rate corresponding to the actual heating liquid medium.

[0131] It can be understood that setting up the flow meter in the manner of this solution can more accurately characterize the heat exchange efficiency of the corresponding primary heating pipe network and secondary heating pipe network by measuring temperature and flow.

[0132] Specifically, the monomer regulation module includes:

[0133] Several monomer flow meters, which are connected to the secondary heating pipe network and are used to monitor the flow rate flowing into the monomer;

[0134] A plurality of monomer dampers are connected to the monomer flowmeter to adjust the flow into the monomer.

[0135] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

[0136] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A combined heating method for a multi-heat source hot water system, characterized in that: include: Heat source thermometers and heat source valves are installed at the intersections of several heat sources and the primary heating network, secondary network thermometers are installed on the outlet side of the secondary heating network of the heat exchanger, and single flow meters and single dampers are installed in front of single valves; adjusting the opening state of the monomer damper according to the size of the monomer flow value measured by the monomer flow meter; Determining whether to reduce the speed of the primary network circulation pump according to the number of opened single dampers; opening or closing the heat source valve according to the heat source temperature measured by the heat source thermometer, and determining whether to reduce the speed of the primary network circulation pump according to the number of times the heat source valve is opened; Determining whether to increase the rotation speed of the primary network circulation pump according to the heating temperature measured by the secondary network thermometer; Wherein, the open state includes a fully open state and a semi-open state; the heat exchanger is arranged between the primary heating pipe network and the secondary heating pipe network; the primary heating pipe network and the secondary heating pipe network perform heat exchange through the heat exchanger; According to the comparison result of the flow value difference and the preset difference, the opening state of the single damper corresponding to the flow value difference is adjusted, wherein, If the flow value difference is greater than the preset difference, the opening state of the single damper is a fully open state; If the flow value difference is less than or equal to the preset difference, the opening state of the single damper is a semi-open state; The preset difference is positively correlated with the diameter of the single heating pipe.

2. The combined heating method of a multi-heat source hot water system according to claim 1, characterized in that: The step of adjusting the opening state of the single damper according to the size of the single flow value measured by the single flow meter includes: determining whether to open the single damper according to a comparison result between the single flow value and a single preset flow value; Sorting the monomer flow values, determining a minimum monomer flow value, and subtracting each monomer flow value from the minimum monomer flow value to obtain a flow value difference; The opening state of the single damper corresponding to the flow value difference is adjusted according to a comparison result of the flow value difference and a preset difference.

3. The combined heating method of a multi-heat source hot water system according to claim 2, characterized in that: Determine whether to open the single damper according to the comparison result between the single flow value and the single preset flow value, wherein: If the single flow value is greater than the single preset flow value, it is determined to open the single damper; If the single flow rate value is less than or equal to the single preset flow rate value, it is determined to close the single damper; The preset flow rate value of the single unit is positively correlated with the diameter of the single unit heating pipe.

4. The combined heating method of a multi-heat source hot water system according to claim 3, characterized in that: If the number of opened single dampers is greater than the preset number of dampers, it is determined to reduce the power of the primary network circulation pump; The number of the preset dampers is positively correlated with the number of the individual heating pipes.

5. The combined heating method of a multi-heat source hot water system according to claim 4, characterized in that: The heat source valve is opened or closed according to the comparison result between the heat source temperature and the preset primary network temperature, wherein: If the heat source temperature is greater than the preset primary network temperature, it is determined to open the heat source valve; If the heat source temperature is less than or equal to the preset primary network temperature, it is determined to close the heat source valve; Wherein, the preset primary network temperature is positively correlated with the number of single dampers.

6. The combined heating method of a multi-heat source hot water system according to claim 5, characterized in that: Determine whether to reduce the speed of the primary network circulation pump according to the number of heat source valves opened and the preset number of valves, wherein: If the number of heat source valves opened is greater than the preset number of valves, determining to reduce the speed of the primary network circulation pump; The number of preset valves is positively correlated with the number of heat sources.

7. The combined heating method of a multi-heat source hot water system according to claim 6, characterized in that: If the heating temperature is lower than the preset heating temperature, it is determined to increase the speed of the primary network circulation pump; The preset heating temperature is positively correlated with the number of heat sources.

8. A combined heating system using the combined heating method of the multi-heat source hot water system according to any one of claims 1 to 7, characterized in that: include: Several heat sources for providing thermal energy; A primary heating pipe network module, which is connected to the heat source and is used to transmit the heat energy generated by the heat source and regulate the flow of the liquid medium in the primary heating pipe network; a heat exchanger connected to the primary heating pipe network for exchanging heat energy; A secondary heating pipe network module, connected to the heat exchanger, for transmitting heat energy in the heat exchanger and regulating the flow of the liquid medium in the primary heating pipe network; The monomer regulating modules are respectively connected to the primary heating pipe network module and the secondary heating pipe network module, and are used to transmit heat energy in the secondary heating pipe network and regulate the flow between the monomer regulating modules.

9. The combined heating system according to claim 8, characterized in that: The monomer adjustment module includes: Several monomer flow meters, connected to the secondary heating pipe network, for monitoring the flow rate flowing into the monomers; A plurality of monomer dampers are connected to the monomer flow meter and are used to adjust the flow of the monomer flowing into the monomer.

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