Regional heating control method and device

Abstract

The invention relates to a regional heating control method and device, and the method comprises the following steps: carrying out heat exchange treatment on high-temperature steam generated by a boiler, and enabling the high-temperature steam to be converted into a hot water medium; pressurizing circulation is conducted on the hot water medium through a hot water pump, and constant-pressure constant-flow hot water fluid is obtained; the constant-pressure constant-flow hot water fluid flows into a preset area in a multi-path distribution mode through the water segregator, and regional heat distribution and temperature adjustment control are facilitated. Performing pressure difference dynamic balance adjustment on the water supply pipe and the water return pipe in the water segregator through a pressure difference valve to obtain a fluid medium after heat energy release; return water in the fluid medium after heat energy release is collected and guided based on the water collector, so that recycled hot water is guided into the steam-water plate heat exchanger again for cyclic heating, and the technical problems that in the prior art, heat distribution is uneven, the system stability is poor, energy consumption is high, and regulation and control flexibility is insufficient are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of heating control, and particularly to a method and device for zoned heating control. Background Art

[0002] With the continuous optimization of China's energy structure and the in-depth promotion of the concept of energy conservation and environmental protection, the intelligent and refined management of heating systems has gradually become an important research direction in the HVAC field. Traditional centralized heating systems usually adopt a unified heating mode, which is difficult to meet the differentiated requirements of different functional areas for temperature adjustment, resulting in coexistence of energy waste and problems such as local overheating or overcooling. Especially in complex environments such as industrial plants, functional areas such as warehouse areas, office areas, and production workshops have different requirements for temperature control. The traditional system lacks flexible regulation means, affecting heating efficiency and user comfort.

[0003] There are still many technical bottlenecks in the current heating control system for achieving zoned adjustment, such as complex system structure, lagging control response, high energy consumption, etc. Although some existing systems introduce a water distribution manifold for hot water distribution, they lack an effective regulation mechanism for pressure fluctuations, which easily causes unstable flow in each branch, thereby affecting the heating uniformity. In addition, most systems do not effectively dynamically balance the return water process, resulting in large pressure difference fluctuations in the circulation system, affecting the overall operation stability and energy efficiency level.

[0004] Therefore, there is an urgent need for a new heating control method that can achieve precise zoned control, dynamic pressure difference balance, and efficient recycling to solve the problems of uneven heat distribution, poor system stability, high energy consumption, and insufficient regulation flexibility existing in the prior art. By introducing key devices such as a steam-water plate heat exchanger, a pressure difference valve, and an intelligent temperature control mechanism to construct a heating system with multi-zone independent adjustment ability, it not only helps to improve energy utilization efficiency but also enhances the user's controllability and comfort of the indoor environment, having important engineering application value and promotion prospects. Summary of the Invention

[0005] The main object of the present invention is to provide a method and device for zoned heating control, which solves the technical problems of uneven heat distribution, poor system stability, high energy consumption, and insufficient regulation flexibility existing in the prior art.

[0006] To achieve the above object, the present invention provides a method for zoned heating control, which is applied to a heating system. The heating system includes a steam-water plate heat exchanger, a water distribution manifold, a water collector, a boiler, and a hot water pump, and includes the following steps: Perform heat exchange treatment on the high-temperature steam generated by the boiler through the steam-water plate heat exchanger to convert the high-temperature steam into a hot water medium; Pressurize and circulate the hot water medium through a hot water pump to obtain a constant-pressure and constant-flow hot water fluid; Through the water distributor, the constant-pressure and constant-flow hot water fluid is distributed in multiple paths to a preset area, facilitating heat distribution and temperature regulation control in sub-areas; wherein, the water distributor is arranged in the area, and the area includes a heating area for the warehouse area, an office area heating area, and a production workshop heating area where independent temperature control mechanisms are provided; During the process of distributing in multiple paths to the preset area, a differential pressure valve is used to dynamically balance the pressure difference between the water supply pipe and the return pipe in the water distributor to obtain a fluid medium after heat energy release; Based on the water collector, the return water in the fluid medium after heat energy release is collected and guided to re-introduce the recovered hot water into the steam-water plate heat exchanger for circulating heating.

[0007] Further, the heat exchange treatment of the high-temperature steam generated by the boiler through the steam-water plate heat exchanger to convert the high-temperature steam into a hot water medium includes: Regulate the pressure parameters of the steam control valve to convert the high-temperature steam generated by the boiler into a steady-pressure steam flow, and perform condensate separation treatment on the steady-pressure steam flow to obtain a dry steam medium; Through the stainless steel corrugated plate group in the steam-water plate heat exchanger, perform multi-stage heat conduction and automatic flow rate adjustment on the dry steam medium to obtain a preset hot water medium with a constant outlet water temperature.

[0008] Further, the pressurizing and circulating the hot water medium through the hot water pump to obtain a constant-pressure and constant-flow hot water fluid includes: Perform bubble elimination treatment on the preset hot water medium to obtain a bubble-free hot water fluid, and perform primary pressurization on the bubble-free hot water fluid through a preset semi-open centrifugal pump impeller to obtain a primary pressure hot water input flow; Dynamically regulate the rotational speed of the hot water pump through a variable frequency drive to obtain a rotational speed adaptive interval parameter, and based on the rotational speed adaptive interval parameter, control a preset impeller guiding mechanism to perform thrust conversion on the primary pressure hot water input flow to obtain a pump-out hot water with balanced pressure; Suppress the pressure fluctuation of the pump-out hot water with balanced pressure to obtain a hot water medium after pulsation elimination; Perform volume expansion compensation caused by temperature change on the hot water medium after pulsation elimination through an expansion tank to obtain a constant-pressure and constant-flow hot water fluid.

[0009] Further, the distributing the constant-pressure and constant-flow hot water fluid in multiple paths to a preset area through the water distributor includes: Perform hydraulic separation treatment on the constant-pressure and constant-flow hot water fluid to obtain multiple parallel hot waters, and conduct flow direction guidance on the multiple parallel hot waters to obtain flow direction-guided hot water with uniform distribution; Distribute the flow direction-guided hot water along the water distributor in multiple paths to a preset area, facilitating heat distribution and temperature regulation control in different areas.

[0010] Furthermore, the dynamic balance adjustment of the pressure difference between the water supply pipe and the return pipe in the water distributor by the pressure difference valve to obtain the fluid medium after heat energy release includes: Detect the pressure difference between the water supply pipe and the return pipe in the water distributor through a preset pressure sensor to obtain the pipeline pressure difference parameter, and analyze the pressure fluctuation of the pipeline pressure difference parameter to obtain the pressure pulsation characteristic curve; Based on the pressure pulsation characteristic curve, perform pressure balance control calculation on the water supply pipe and the return pipe through the pressure difference valve to obtain the pipeline pressure balance parameter; Based on the pipeline pressure balance parameter, control the liquid in the water distributor to perform multi-stage series flow distribution and heat energy release to obtain the fluid medium after heat energy release.

[0011] Furthermore, the pressure balance control calculation of the water supply pipe and the return pipe based on the pressure pulsation characteristic curve through the pressure difference valve to obtain the pipeline pressure balance parameter includes: Perform frequency domain feature decomposition on the pressure pulsation characteristic curve through Fourier transform technology to obtain the pressure fluctuation frequency spectrum diagram; Based on the fluid impedance matching principle, screen the characteristic frequencies of the pressure fluctuation frequency spectrum diagram to obtain the effective pulsation frequency band, and perform band-pass filtering on the effective pulsation frequency band to obtain the purified pressure fluctuation signal; Calculate the spool displacement of the purified pressure fluctuation signal through the servo control mechanism of the pressure difference valve to obtain the dynamic adjustment stroke parameter; Based on the dynamic adjustment stroke parameter, perform non-linear correction on the pressure balance between the water supply pipe and the return pipe to obtain the pipeline pressure balance parameter.

[0012] Furthermore, the collection and guidance treatment of the return water in the fluid medium after heat energy release based on the water collector to re-introduce the recovered hot water into the steam-water plate heat exchanger for circulation heating includes: Conduct multi-path water flow convergence and diversion on the fluid medium after heat energy release to obtain the initial return water fluid, and perform impurity separation and purification on the initial return water fluid through a vortex separator to obtain the purified return water medium; Perform turbulence elimination treatment on the purified return water medium through the steady flow device in the water collector to obtain the laminar flow state return water fluid; Based on preset directional diversion parameters, the laminar flow state return water fluid is guided and controlled in the confluence cavity to obtain recycled hot water flow, so as to re-introduce the recycled hot water into the steam-water plate heat exchanger for circulating heating.

[0013] The present invention also provides a sub-region heating control device applied to a heating system. The heating system includes a steam-water plate heat exchanger, a water distributor, a water collector, a boiler and a hot water pump, and comprises: An exchange module, configured to perform heat exchange processing on the high-temperature steam generated by the boiler through the steam-water plate heat exchanger, so that the high-temperature steam is converted into a hot water medium; A conveying module, configured to pressurize and circulate the hot water medium through the hot water pump to obtain a constant-pressure and constant-flow hot water fluid; A distribution module, configured to distribute the constant-pressure and constant-flow hot water fluid in multiple paths through the water distributor to a preset area, so as to facilitate sub-region heat distribution and temperature adjustment control; wherein, the water distributor is arranged in the area, and the area includes a warehouse area heating area, an office area heating area and a production workshop heating area provided with independent temperature control mechanisms; An adjustment module, configured to dynamically balance the pressure difference between the water supply pipe and the return pipe in the water distributor through a pressure difference valve during the process of distributing in multiple paths to a preset area, so as to obtain a fluid medium after heat energy release; A collection module, configured to perform collection and guiding processing on the return water in the fluid medium after heat energy release based on the water collector, so as to re-introduce the recycled hot water into the steam-water plate heat exchanger for circulating heating.

[0014] The present invention also provides a computer device, including a memory and a processor. A computer program is stored in the memory, and when the processor executes the computer program, the steps of the method described in any one of the above are implemented.

[0015] The present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method described in any one of the above are implemented.

[0016] A method for controlling zoned heating provided by the present invention includes the following steps: performing heat exchange treatment on the high-temperature steam generated by the boiler to convert the high-temperature steam into a hot water medium; pressurizing and circulating the hot water medium through a hot water pump to obtain a constant-pressure and constant-flow hot water fluid; distributing the constant-pressure and constant-flow hot water fluid through the water distributor to multiple preset areas for zoned heat distribution and temperature adjustment control; wherein, the water distributor is arranged in the area, and a differential pressure valve is used to dynamically balance the pressure difference between the water supply pipe and the water return pipe in the water distributor to obtain a fluid medium after heat release; based on the water collector, the return water in the fluid medium after heat release is collected and guided to re-introduce the recovered hot water into the steam-water plate heat exchanger for circulating heating, solving the technical problems of uneven heat distribution, poor system stability, high energy consumption, and insufficient regulation flexibility in the prior art. It realizes the multi-path distribution of constant-pressure and constant-flow hot water based on the water distributor, constructs a regionalized heat energy transmission pipeline system, enables heat to be accurately delivered to each functional area as needed, enhances the flexibility and scalability of the heating system, and has the technical effect of being applicable to the comprehensive heating requirements under complex building structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the steps of a method for controlling zoned heating according to an embodiment of the present invention; Figure 2 is a structural block diagram of a device for controlling zoned heating according to an embodiment of the present invention; Figure 3 is a schematic structural block diagram of a computer device according to an embodiment of the present invention.

[0018] The realization of the object, functional features, and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the object, technical solution, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] As Figure 1 shown, Figure 1 is a schematic diagram of the steps of a method for controlling zoned heating according to an embodiment of the present invention; An embodiment of the present invention provides a method for controlling zoned heating, which is applied to a heating system. The heating system includes a steam-water plate heat exchanger, a water distributor, a water collector, a boiler, and a hot water pump, and includes the following steps: Step S1, performing heat exchange treatment on the high-temperature steam generated by the boiler through a steam-water plate heat exchanger to convert the high-temperature steam into a hot water medium.

[0021] Specifically, during the operation of the heating system, the high-temperature steam generated by the boiler is subjected to heat exchange treatment through a steam-water plate heat exchanger, converting the high-temperature steam into a hot water medium. This link is one of the key steps for the entire system to achieve efficient and stable heating. Specifically, the high-temperature steam generated by the boiler is not directly used in the heating area. Instead, it is first transported to the steam-water plate heat exchanger. Inside this device, the steam and the circulating return water are isolated by a metal heat transfer surface but heat transfer is achieved. After the heat of the steam is absorbed by the circulating water, the temperature drops and it condenses into condensate and is discharged, while the circulating water is heated into a hot water medium with a certain temperature and pressure, thus completing the energy conversion process from steam to hot water. This method not only achieves efficient energy transfer but also avoids potential safety hazards and regulation problems that may be caused by the direct entry of steam into the heating pipe network. For example, in an application scenario in an industrial plant area, the production workshop may require a relatively high-temperature heating environment to maintain equipment operation or technological requirements, while the heating demand in the office area or warehouse area is relatively low. Therefore, after converting the high-temperature steam output by the boiler into a hot water medium with a controllable temperature through a steam-water plate heat exchanger, and then through subsequent multi-way distribution by the water distributor, it can be precisely adjusted according to the specific requirements of different areas, thus achieving the goal of energy-saving and efficient zoned control.

[0022] Step S2: Pressurize and circulate the hot water medium through a hot water pump to obtain a constant-pressure and constant-flow hot water fluid.

[0023] Specifically, pressurizing and circulating the hot water medium through a hot water pump to obtain a constant-pressure and constant-flow hot water fluid is a key supporting link to ensure the stable operation of the entire heating system and achieve efficient zoned heating. After the steam-water plate heat exchanger completes the energy conversion from high-temperature steam to hot water medium, the obtained hot water medium is transported to the inlet end of the hot water pump. Here, the hot water pump applies a constant power to it, making it form a constant-pressure and constant-flow hot water fluid with a certain pressure and flow rate, thereby driving the hot water to flow steadily to the subsequent water distributor according to the design requirements and further distributing it to each preset area. This step not only solves the problems of pressure fluctuations and unstable flow rates caused by inaccurate pump regulation in traditional heating systems but also provides a reliable power guarantee and flow rate benchmark for subsequent zoned heat distribution. For example, in the actual application in an industrial plant area, due to the high equipment operation requirements in the production workshop, a continuous and stable hot water supply is usually required to maintain a constant temperature environment, while the heat demand in the office area or warehouse area is relatively low and intermittent; after pressurizing and circulating the hot water medium through a hot water pump, it can ensure that the hot water fluid required in each area at different times is always in a controllable state, thereby providing the basic conditions for the water distributor to achieve multi-way precise distribution and independent temperature control, and ultimately improving the energy efficiency level and regulation accuracy of the overall system.

[0024] Step S3: Through the water separator, the constant-pressure and constant-flow hot water fluid is distributed in multiple paths to flow into a preset area, facilitating heat distribution and temperature regulation control in different areas. Among them, the water separator is arranged in the area, and the area includes a heating area for the warehouse area equipped with an independent temperature control mechanism, a heating area for the office area, and a heating area for the production workshop.

[0025] Specifically, through the water separator, the constant-pressure and constant-flow hot water fluid is distributed in multiple paths to flow into a preset area, facilitating heat distribution and temperature regulation control. This step is the core link to achieve system partition heating and independent regulation. After the hot water pump completes the pressurized circulation of the hot water medium and forms a stable constant-pressure and constant-flow hot water fluid, this fluid is transported to the inlet end of the water separator. The water separator evenly and controllably distributes the hot water into each heating branch according to the heat load requirements of different pre-set functional areas, thus realizing independent hot water hydraulic support for the heating area of the warehouse area, the heating area of the office area, and the heating area of the production workshop. Since each area is equipped with an independent temperature control mechanism, on the basis of the initial flow distribution completed by the water separator, each area can further adjust the hot water flow entering this area according to the actual ambient temperature or process requirements, and then achieve refined temperature control. For example, in the application scenario of an industrial plant area, the production workshop usually requires a relatively high and continuous stable heating intensity to ensure the normal operation of equipment or production processes, while the office area pays more attention to temperature comfort and intermittent regulation, and the warehouse area may only need to maintain the basic anti-freezing temperature. By arranging the water separator inside each area and combining the coordinated action of the independent temperature control mechanism, it can ensure that each area obtains hot water resources as needed, avoid energy waste and temperature imbalance problems in the traditional central heating mode, and thus improve the energy efficiency level and operation flexibility of the overall system.

[0026] Step S4: During the process of flowing in multiple paths to the preset area, the pressure difference between the water supply pipe and the water return pipe in the water separator is dynamically balanced and adjusted through a pressure difference valve to obtain the fluid medium after heat release.

[0027] Specifically, during the process of multi-channel distribution flowing to the preset area, the pressure difference valve is used to dynamically balance the pressure difference between the water supply pipe and the return pipe in the water separator, and the fluid medium after heat energy release is obtained. This technical step aims to solve the problem of hydraulic imbalance caused by the load changes of each heating branch, and ensure the stability of the system operation and the uniformity of heating. When the constant-pressure and constant-flow hot water fluid is distributed to the heating areas of the warehouse area, the office area, and the production workshop area through the water separator, in actual operation, due to the different heat consumption demands in different areas, the return water temperature and flow rate of each branch are inconsistent, which in turn causes pressure fluctuations between the return water pipe and the water supply pipe, affecting the stability of the overall system. Therefore, a pressure difference valve is set inside the water separator to monitor and adjust the pressure difference between the water supply pipe and the return water pipe in real time, and keep it within a set range, so as to avoid the phenomenon of hot water flow deviation or backflow caused by the change of pressure difference, and ensure the normal circulation of hot water in each branch and the release of heat energy. For example, in the actual operation of an industrial factory area, due to continuous production, the production workshop requires continuous and large amounts of heating, and its return water temperature is low and the flow rate is large. While the office area may be closed or the heating intensity may be reduced during non-working hours, resulting in a decrease in the return water volume and an increase in the pressure difference of this branch. At this time, the pressure difference valve will automatically respond and adjust the pressure relationship between the water supply and the return water, so that the hydraulic working condition of the whole system remains balanced, preventing insufficient heating or increased energy consumption in other areas due to excessive local pressure difference, thereby improving the overall control accuracy and operation efficiency of the system.

[0028] Step S5: Based on the water collector, the return water in the fluid medium after heat energy release is collected and guided to re-introduce the recovered hot water into the steam-water plate heat exchanger for circulating heating.

[0029] Specifically, based on the water collector, the return water in the fluid medium after heat release is collected and guided to reintroduce the recovered hot water into the steam-water plate heat exchanger for circulating heating. This process is a key closed-loop link to achieve the efficient operation of the system and the recycling of energy. After the heating task is completed in each area, the temperature of the hot water decreases after releasing heat, forming the fluid medium after heat release. This return water is guided through the pipe network to the inlet end of the water collector, where the water collector centrally collects the multiple return waters from the heating areas of the warehouse area, the office area, and the production workshop area, and uniformly guides and outputs them according to the preset flow direction, and then re-transports them to the steam-water plate heat exchanger for re-heating treatment, thus forming a complete hot water circulation path. This step not only effectively reduces heat waste and water resource consumption but also improves the thermal efficiency and operation continuity of the entire heating system. For example, in the application scenario of an industrial plant area, the production workshop has a large amount of return water and a relatively low temperature due to continuous heating, while the return water volume in the office area or the warehouse area is small and the temperature is high during off-peak hours; through the centralized treatment of the return water in different areas by the water collector, the unified monitoring and scheduling of the return water temperature and flow rate can be realized, ensuring that the state of the return water entering the steam-water plate heat exchanger is stable and controllable, providing good basic conditions for the heat exchange between the subsequent steam and the return water, and thus improving the energy-saving effect and operation stability of the overall system.

[0030] In a specific embodiment, the heat exchange treatment of the high-temperature steam generated by the boiler through the steam-water plate heat exchanger to convert the high-temperature steam into a hot water medium includes: Adjust the pressure parameter of the steam control valve to convert the high-temperature steam generated by the boiler into a stabilized steam flow, and perform condensate separation treatment on the stabilized steam flow to obtain a dry steam medium; Perform multi-stage heat conduction and automatic flow rate adjustment on the dry steam medium through the stainless steel corrugated plate group in the steam-water plate heat exchanger to obtain a preset hot water medium with a constant outlet water temperature.

[0031] Specifically, the heat exchange treatment of the high-temperature steam generated by the boiler through the steam-water plate heat exchanger converts the high-temperature steam into a hot water medium, including: regulating the pressure parameters of the steam control valve to convert the high-temperature steam generated by the boiler into a stabilized steam flow, and performing condensate separation treatment on the stabilized steam flow to obtain a dry steam medium; performing multi-stage heat conduction and automatic flow rate adjustment on the dry steam medium through the stainless steel corrugated plate group in the steam-water plate heat exchanger to obtain a preset hot water medium with a constant outlet water temperature. This step is the basic link for the entire heating system to achieve efficient and stable heat supply, and its technical design and control logic closely revolve around the safety, energy conservation, and controllability of the system operation. Specifically, after the boiler generates high-temperature steam, it is first necessary to stabilize and dry the steam to ensure the stability and efficiency of the subsequent heat exchange process. Therefore, a steam control valve is set in the steam transmission path of the system. By precisely regulating the pressure parameters of this valve, the irregular high-temperature steam flow from the boiler can be adjusted into a stabilized steam flow with a set pressure range. This pressure stabilization operation not only helps reduce the energy loss caused by pressure fluctuations during steam transmission but also provides a more stable heat source input condition for the subsequent heat exchange process. Subsequently, the stabilized steam continues to flow forward and enters the condensate separation device. In this device, some of the liquid condensate carried in the steam is effectively separated, thereby obtaining a purer and drier dry steam medium, avoiding problems such as local corrosion or a decrease in heat transfer efficiency caused by wet steam when it enters the steam-water plate heat exchanger. On this basis, the dry steam medium enters the interior of the steam-water plate heat exchanger and exchanges heat with the circulating return water. The core structure of the steam-water plate heat exchanger consists of multiple stainless steel corrugated plates. Multiple narrow flow channels are formed between these corrugated plates. The steam and the circulating water flow in opposite directions in adjacent flow channels, and efficient heat conduction is carried out through the metal plate surface. Due to the strong flow disturbance effect on the surface of the corrugated plate, the heat transfer coefficient can be significantly enhanced. At the same time, through the built-in flow rate automatic adjustment mechanism in the heat exchanger, the water flow rate can be dynamically adjusted according to the steam flow rate and temperature changes, thereby achieving precise control of the outlet water temperature. Finally, after multi-stage heat conduction treatment, the system outputs a preset hot water medium with a constant temperature, providing a reliable and controllable heat source basis for subsequent steps such as hot water pump pressurization circulation and distributor distribution. For example, in the application scenario of an industrial plant area, the production workshop may require continuous and stable high-temperature hot water to maintain the equipment operation environment or support certain technological processes, while the office area and the warehouse area have relatively lower requirements for the water supply temperature. In this case, by precisely setting the pressure of the steam control valve and combining the multi-stage heat conduction ability of the stainless steel corrugated plate group in the steam-water plate heat exchanger, the system can flexibly adjust the heat exchange intensity according to the specific requirements of different regions, so that the temperature of the finally output hot water medium always remains within the preset range.For example, when the load in the production workshop increases, the system can automatically increase the steam supply and optimize the heat exchange efficiency to ensure that the hot water temperature does not drop significantly. During off-peak hours, such as at night or on holidays, when the heat demand in the office area and warehouse area decreases, the system can appropriately reduce the heat exchange intensity, thereby achieving the purpose of energy conservation and consumption reduction. To sum up, through the pressure regulation of the steam control valve, the condensate separation treatment, and the multi-stage heat conduction and automatic flow rate adjustment mechanism of the stainless steel corrugated plate group in the steam-water plate heat exchanger, this step constructs an efficient, stable, and controllable heat energy conversion process, which not only improves the energy utilization efficiency but also lays a solid technical foundation for the subsequent zoning regulation and stable operation of the system.

[0032] In a specific embodiment, the pressurized circulation of the hot water medium by the hot water pump to obtain a constant-pressure and constant-flow hot water fluid includes: Performing bubble elimination treatment on the preset hot water medium to obtain a bubble-free hot water fluid, and performing primary pressurization on the bubble-free hot water fluid by a preset semi-open centrifugal pump impeller to obtain a primary pressure hot water input flow; Performing dynamic speed regulation on the hot water pump by a variable frequency drive to obtain a speed adaptive interval parameter, and based on the speed adaptive interval parameter, controlling a preset impeller guiding mechanism to perform thrust conversion on the primary pressure hot water input flow to obtain a pump-out hot water with balanced pressure; Performing pressure fluctuation suppression on the pump-out hot water with balanced pressure to obtain a hot water medium after pulsation elimination; Performing volume expansion compensation caused by temperature change on the hot water medium after pulsation elimination through an expansion tank to obtain a constant-pressure and constant-flow hot water fluid.

[0033] Specifically, pressurizing and circulating the hot water medium through a hot water pump to obtain a constant-pressure and constant-flow hot water fluid includes: eliminating bubbles from the preset hot water medium to obtain a bubble-free hot water fluid, and performing primary pressurization on the bubble-free hot water fluid through a preset semi-open centrifugal pump impeller to obtain a primary-pressure hot water input flow; dynamically regulating the rotational speed of the hot water pump through a variable-frequency drive to obtain rotational speed adaptive interval parameters, and based on the rotational speed adaptive interval parameters, controlling a preset impeller guiding mechanism to perform thrust conversion on the primary-pressure hot water input flow to obtain a pumped hot water with balanced pressure; suppressing pressure fluctuations of the pumped hot water with balanced pressure to obtain a hot water medium after pulsation elimination; compensating for volume expansion caused by temperature changes of the hot water medium after pulsation elimination through an expansion tank to obtain a constant-pressure and constant-flow hot water fluid. This step is the core link for the entire heating system to achieve stable hot water hydraulic support and precise heat distribution. Its technical design fully considers fluid mechanics characteristics, thermodynamic effects, and automation control requirements. After the steam-water plate heat exchanger completes the energy conversion from high-temperature steam to hot water medium, although the generated hot water medium has a certain temperature stability, it may still entrain a small amount of gas or tiny bubbles during heat exchange and transportation. If these bubbles are not removed in time, it will affect the efficiency of the subsequent pressurization process and the uniformity of fluid flow, and even cause the water pump to run idle or local cavitation. Therefore, before entering the hot water pump, the system first eliminates bubbles from the preset hot water medium, usually by physical separation or vacuum degassing, etc., so that the air in the hot water is effectively separated out, thereby obtaining a purer bubble-free hot water fluid. Subsequently, this bubble-free hot water fluid enters the hot water pump equipped with a semi-open centrifugal pump impeller, and is primarily pressurized by the centrifugal force generated by the rotation of the impeller to form a primary-pressure hot water input flow with a certain pressure basis, providing initial power support for subsequent fine adjustment. On this basis, in order to achieve the dynamic adaptation ability of the hot water pump operating state, the system introduces a variable-frequency drive to perform real-time rotational speed regulation on the hot water pump. By collecting the current pressure, flow rate, and regional heat load data of the system, the variable-frequency drive can calculate and output a rotational speed adaptive interval parameter that matches the current working condition, and then drive the motor to operate at the corresponding frequency to ensure that the water pump always operates within the efficient interval. At the same time, the preset impeller guiding mechanism automatically adjusts according to the rotational speed adaptive interval parameter, changing the water flow direction and velocity distribution, so as to exert a more precise thrust conversion effect on the primary-pressure hot water input flow, and convert it into a pumped hot water with higher pressure consistency and flow stability. This dynamic adjustment mechanism not only improves the response speed of the system, but also effectively avoids hydraulic shock or energy waste caused by sudden load changes. However, during the pressurization process, due to reasons such as the periodic operation of the impeller, there may still be a certain degree of pressure fluctuation in the pumped hot water. If this fluctuation is not suppressed, it will be transmitted to the subsequent pipe network, causing problems such as uneven heat supply and unstable temperature control.To this end, the system is further provided with a pressure fluctuation suppression device, such as a buffer tank or an orifice plate, etc., to eliminate the pulsation of the pumped hot water, making the flow of the hot water medium more stable and continuous. The finally obtained hot water medium after pulsation elimination is then subjected to volume expansion compensation treatment caused by temperature change through an expansion tank. The expansion tank is internally provided with an elastic diaphragm or airbag structure, which can automatically adjust the volume as the volume expands when the hot water temperature rises, preventing the system pressure from rising suddenly or the safety valve from operating frequently, thereby realizing the constant pressure and constant flow control of the hot water medium. For example, in the application scenario of an industrial plant area, the production workshop needs to maintain a constant temperature environment for a long time to ensure the stability of equipment operation, while there are obvious time differences in the heating demands of the office area and the warehouse area. In this case, through the above-mentioned hot water pump pressurization and circulation scheme, the system can dynamically adjust the hot water supply pressure and flow according to the real-time heat consumption status of each area, ensuring that the production workshop always obtains a stable hot water supply, and at the same time reducing the hot water supply hydraulic intensity in the office area and the warehouse area during off-peak hours, thereby achieving the goals of energy conservation, consumption reduction and refined management. Through this series of treatment processes, the hot water pump not only completes the pressurization task of the hot water medium, but also constructs a hot water supply hydraulic circulation system with intelligent adjustment ability, high stability and good adaptability, providing a solid technical support for the subsequent multi-way distribution and independent temperature control of the water distributor.

[0034] In a specific embodiment, the multi-way distribution of the constant pressure and constant flow hot water fluid to a preset area through the water distributor includes: Performing hydraulic separation treatment on the constant pressure and constant flow hot water fluid to obtain multi-way parallel hot water, and guiding the flow of the multi-way parallel hot water to obtain uniformly distributed flow-guided hot water; Distributing the flow-guided hot water along the water distributor to a preset area in multiple ways, facilitating sub-regional heat distribution and temperature adjustment control.

[0035] Specifically, the multi-path distribution of the constant-pressure and constant-flow hot water fluid to a preset area through the water separator includes: performing hydraulic separation on the constant-pressure and constant-flow hot water fluid to obtain multi-path parallel hot water, and guiding the flow of the multi-path parallel hot water to obtain uniformly distributed flow-guided hot water; distributing the flow-guided hot water along the water separator to a preset area in multiple paths, which is convenient for performing sub-region heat distribution and temperature regulation control. This step is a key technical link for the entire heating system to achieve district heating, energy supply on demand, and refined temperature control. Its design goal is to ensure that hot water can achieve stable, balanced, and controllable flow distribution among multiple functional areas, thereby improving the overall system operation efficiency and user comfort. After the hot water pump completes the pressurized circulation of the hot water medium and outputs a constant-pressure and constant-flow hot water fluid with stable pressure and flow characteristics, this fluid enters the inlet end of the water separator and first undergoes a hydraulic separation process. This process relies on the flow splitting structure inside the water separator, usually composed of multiple evenly arranged diversion holes or throttling channels, whose function is to cut the originally concentrated-flowing hot water fluid into several small-flow branches flowing in parallel, that is, multi-path parallel hot water. This hydraulic separation not only helps with the independent regulation of the heat load between subsequent branches but also effectively alleviates problems such as local erosion or pressure unevenness caused by high flow velocity in a single pipe, thereby ensuring the flow stability of hot water in the entire pipe network system. Subsequently, the system further performs flow guidance on these multi-path parallel hot waters. Through structures such as guide plates, elbows, or adjustable valves set inside the water separator, the hot water enters their respective corresponding heating branches along a predetermined path, forming uniformly distributed flow-guided hot water. This process not only improves the distribution uniformity of hot water among branches but also provides physical basis support for the independent temperature control of different regions in the future. For example, in the actual application of an industrial factory area, production workshops often require relatively high-intensity continuous heating to maintain the equipment operating environment or technological process, while the office area pays more attention to the comfort and energy-saving control of the indoor temperature, and the warehouse area may only need to maintain the minimum anti-freezing temperature. Therefore, by precisely controlling the flow-guided hot water, each area can obtain a hot water supply volume that matches its actual heat demand, avoiding common phenomena such as "over-supply" or "under-supply" in the traditional centralized heating mode. On this basis, the system guides the hot water that has undergone hydraulic separation and flow guidance treatment along the water separator structure into preset functional areas, specifically including the heating area of the warehouse area, the heating area of the office area, and the heating area of the production workshop, which are equipped with independent temperature control mechanisms. As the core node connecting the main pipe network and each regional branch, the structure design of the water separator fully considers the scalability and regulation flexibility of the system. It is usually equipped with manual or electric control valves, allowing the water supply volume of each branch to be dynamically adjusted according to real-time heat load changes, thereby achieving "heating on demand" in the true sense.In addition, since the hot water already has good pressure stability and flow consistency before entering each area, even when operating simultaneously in different areas, it can effectively avoid problems such as mutual interference or hydraulic imbalance, ensuring the smooth operation and response speed of the entire heating system. For example, in a low-temperature environment in winter, if the production workshop is operating at full load while the office area has not started work yet, the system can appropriately restrict or even shut off the hot water supply to this area through the water distributor, and give priority to delivering more hot water resources to the production workshop to meet its heating requirements. After the office area starts operating, the corresponding branch is reopened through the water distributor, and the hot water flow rate flowing into this area is finely adjusted in combination with the independent temperature control mechanism within this area to achieve the dual goals of rapid heating and energy-saving operation. This multi-path distribution mechanism based on the water distributor not only improves the adaptability of the system but also significantly enhances the user's autonomous control ability over the indoor environmental temperature. To sum up, this step constructs an efficient, stable, and controllable hot water multi-path distribution system through hydraulic separation treatment and flow direction guiding mechanism, realizing seamless connection and fine control from the main pipe network to each heating area. It is not only the technical basis for the system to achieve heat distribution and temperature regulation control in different areas but also provides strong support for subsequent links such as differential pressure balance adjustment, return water collection, and circulating heating, thus comprehensively improving the intelligent level and energy utilization efficiency of the heating system.

[0036] In a specific embodiment, the dynamic balance adjustment of the pressure difference between the water supply pipe and the return pipe in the water distributor by the pressure difference valve to obtain the fluid medium after heat energy release includes: Detect the pressure difference between the water supply pipe and the return pipe in the water distributor through a preset pressure sensor to obtain the pipeline pressure difference parameter, and analyze the pressure fluctuation of the pipeline pressure difference parameter to obtain the pressure pulsation characteristic curve; Based on the pressure pulsation characteristic curve, perform pressure balance control calculation on the water supply pipe and the return pipe through the pressure difference valve to obtain the pipeline pressure balance parameter; Based on the pipeline pressure balance parameter, control the liquid in the water distributor to perform multi-stage series flow distribution and heat energy release to obtain the fluid medium after heat energy release.

[0037] Specifically, the dynamic balance adjustment of the pressure difference between the water supply pipe and the return pipe in the water separator by the pressure difference valve to obtain the fluid medium after heat energy release includes: detecting the pressure difference between the water supply pipe and the return pipe in the water separator through a preset pressure sensor to obtain the pipeline pressure difference parameter, and analyzing the pressure fluctuation of the pipeline pressure difference parameter to obtain the pressure pulsation characteristic curve; based on the pressure pulsation characteristic curve, using the pressure difference valve to perform pressure balance control calculation on the water supply pipe and the return pipe to obtain the pipeline pressure balance parameter; based on the pipeline pressure balance parameter, controlling the liquid in the water separator to perform multi-stage series flow distribution and heat energy release to obtain the fluid medium after heat energy release. This step is the key technical means to achieve the hydraulic stability and uniform heat distribution of the heating system under complex operating conditions, and its design logic closely revolves around the system's dynamic response ability, hydraulic self-adaptability, and energy-saving regulation objectives. Specifically, after the hot water is distributed to the heating areas of the warehouse area, the office area, and the production workshop area through the water separator, due to the differences in the actual heat consumption loads of each area, the hot water flow rate and temperature entering different branches are inconsistent, resulting in changes in the pressure difference between the water supply pipe and the return pipe. If the fluctuation of this pressure difference is not adjusted in time, it will directly affect the circulation efficiency of the hot water in each branch, and even cause local "dead water" or water flow backflow phenomena, thus affecting the stability and heating quality of the entire heating system. Therefore, the system continuously monitors the real-time pressure difference between the water supply pipe and the return pipe by setting a preset pressure sensor inside the water separator, collects and records the pressure data within multiple operating cycles, thereby obtaining the pipeline pressure difference parameter reflecting the dynamic characteristics of the system, and further analyzing the trend of these parameters changing with time to draw the pressure pulsation characteristic curve for identifying the hydraulic fluctuation law of the system under different working conditions. On this basis, the system uses the pressure difference valve as the core control device, and according to the obtained pressure pulsation characteristic curve, combines the preset control algorithm model to perform dynamic balance control calculation on the pressure relationship between the water supply pipe and the return pipe, and obtains the optimal pipeline pressure balance parameter under the current operating state. This parameter reflects the minimum pressure difference threshold required to maintain the hydraulic stability of the system and the allowable maximum fluctuation range, providing a decision-making basis for subsequent automatic adjustment. Subsequently, the pressure difference valve adjusts the opening degree of its internal throttling structure in real time according to this parameter, so that the pressure difference between the water supply side and the return side always remains within a set range, effectively suppressing the hydraulic imbalance problem caused by load changes, and ensuring the normal flow and heat release of the hot water in each branch. In addition, in order to further improve the control accuracy and energy utilization rate of the system, the system also designs the multi-stage series flow distribution of the hot water flow path inside the water separator based on the above pipeline pressure balance parameter. That is, during the process of the hot water flowing through the water separator, through the built-in multi-stage diversion structure and adjustable throttling device, the hot water flows through different functional modules in a preset order, gradually completing the heat transfer and pressure release process.For example, in the application scenario of an industrial plant area, due to the intensive equipment and high operating intensity in the production workshop, a relatively high heat supply is usually required. In contrast, in the office area and the warehouse area, according to the different usage periods, their heat demands show obvious intermittent characteristics. At this time, the system can reasonably distribute the hot water flow rate and pressure gradient of each branch according to the actual load changes in each area, combined with the dynamic adjustment ability of the differential pressure valve, to ensure that after the hot water releases the predetermined heat, it can still return to the water collector in a relatively balanced state, avoiding problems such as energy waste or pipe network stress concentration caused by local overcooling or overheating. To sum up, through the data acquisition of the pressure sensor, the dynamic adjustment of the differential pressure valve, and the multi-stage series flow design inside the water distributor, this step constructs a hydraulic balance control system with self-sensing, self-judging, and self-adjusting capabilities, which not only effectively solves problems such as hydraulic imbalance and high energy consumption in traditional heating systems, but also provides stable hydraulic conditions for subsequent return water collection and circulating heating. It is not only a prerequisite for the system to efficiently recover the fluid medium after heat release, but also an important technical foundation to support the intelligent operation and refined management of the entire heating system.

[0038] In a specific embodiment, the pressure balance control calculation of the water supply pipe and the return pipe is performed based on the pressure pulsation characteristic curve through the differential pressure valve to obtain the pipeline pressure balance parameters, including: Performing frequency-domain feature decomposition on the pressure pulsation characteristic curve through Fourier transform technology to obtain a pressure fluctuation frequency spectrum diagram; Based on the fluid impedance matching principle, screening the characteristic frequencies of the pressure fluctuation frequency spectrum diagram to obtain an effective pulsation frequency band, and performing band-pass filtering on the effective pulsation frequency band to obtain a purified pressure fluctuation signal; Calculating the spool displacement amount of the purified pressure fluctuation signal through the servo control mechanism of the differential pressure valve to obtain a dynamic adjustment stroke parameter; Performing non-linear correction of the pressure balance of the water supply pipe and the return pipe based on the dynamic adjustment stroke parameter to obtain the pipeline pressure balance parameter.

[0039] Specifically, through the differential pressure valve, based on the pressure pulsation characteristic curve, pressure balance control calculation is performed on the water supply pipe and the return pipe to obtain pipeline pressure balance parameters, including: performing frequency-domain feature decomposition on the pressure pulsation characteristic curve through Fourier transform technology to obtain a pressure fluctuation spectrogram; screening the characteristic frequencies of the pressure fluctuation spectrogram based on the fluid impedance matching principle to obtain an effective pulsation frequency band, and performing band-pass filtering on the effective pulsation frequency band to obtain a purified pressure fluctuation signal; calculating the spool displacement of the purified pressure fluctuation signal through the servo control mechanism of the differential pressure valve to obtain a dynamic adjustment stroke parameter; performing non-linear correction of pressure balance on the water supply pipe and the return pipe based on the dynamic adjustment stroke parameter to obtain pipeline pressure balance parameters. This step is a key link for the heating system to achieve high-precision hydraulic self-adaptive regulation and ensure the heating stability of each area. The core technology lies in improving the response speed and control accuracy of the traditional differential pressure regulation method through frequency-domain analysis and intelligent control means. During the actual operation process, due to the differences in heat loads among the heating areas of the warehouse area, the office area, and the production workshop area, complex and non-linear pressure fluctuation phenomena occur between the water supply pipe and the return pipe inside the water distributor. Such fluctuations not only affect the flow stability of hot water but may also cause problems such as local flow imbalance or uneven heat supply. Therefore, the system introduces Fourier transform technology to perform frequency-domain feature decomposition on the pressure pulsation characteristic curve collected by the pressure sensor, converting the complex pressure changes in the original time domain into an energy distribution map in the frequency domain, that is, obtaining a pressure fluctuation spectrogram reflecting the hydraulic disturbance characteristics of the system. This process can clearly identify the main sources of pressure disturbance in the system and their frequency distribution ranges, providing a theoretical basis for subsequent precise control. Subsequently, based on the fluid impedance matching principle, the system screens each frequency component in the above pressure fluctuation spectrogram to identify the effective pulsation frequency band that has a greater impact on the system stability. These frequency bands usually correspond to hydraulic disturbances caused by common operating condition changes such as pump start-stop, valve switching, or sudden changes in regional heat load. For these effective pulsation frequency bands, the system further uses band-pass filtering technology to purify the signals, removing high-frequency noise and low-frequency drift interference, so as to extract a representative purified pressure fluctuation signal. This signal not only reflects the current hydraulic disturbance intensity of the system but also provides high-signal-to-noise input data for the real-time adjustment of the differential pressure valve. On this basis, the servo control mechanism of the differential pressure valve calculates the spool displacement according to the purified pressure fluctuation signal to obtain a dynamic adjustment stroke parameter that can compensate for the current pressure difference. This parameter determines the opening change amount of the throttle orifice inside the differential pressure valve, thus directly affecting the flow area and resistance characteristics between the water supply pipe and the return pipe.For example, in the application scenario of an industrial plant area, when the heat load suddenly increases due to the startup of equipment in the production workshop, it will cause the return water temperature of this branch to drop and the flow rate to increase, which in turn leads to an increase in the pressure of the return water pipe and an increase in the pressure difference between the supply water pipe and the return water pipe. At this time, the differential pressure valve quickly responds through the servo control mechanism, adjusts the position of the valve core, reduces the throttling resistance on the return water side, releases the excess pressure, and maintains the hydraulic balance of the entire system. Finally, based on the above dynamic adjustment stroke parameters, the system performs a non-linear correction on the pressure relationship between the supply water pipe and the return water pipe, considering non-linear factors that may occur in different operating stages of the system (such as changes in fluid viscosity, pipe friction effects, etc.). By establishing a multi-variable feedback model, the differential pressure adjustment strategy is continuously optimized, and finally the pipeline pressure balance parameters for subsequent control decisions are output. This parameter not only reflects the current hydraulic state of the system but also serves as a reference benchmark for the next round of adjustment, forming a closed-loop control structure to ensure that the system always operates near the optimal hydraulic balance point. To sum up, this step performs frequency domain analysis through Fourier transform, screens characteristic frequencies in combination with the fluid impedance matching principle, calculates the spool displacement using the servo control mechanism, and finally obtains accurate pipeline pressure balance parameters through a non-linear correction mechanism, constructing a differential pressure automatic adjustment system with high sensitivity, high stability, and strong adaptability. It is not only the core control logic for realizing the dynamic hydraulic balance of the sub-region heating system but also provides solid technical support for subsequent return water collection, circulating heating, and overall energy efficiency optimization, significantly improving the intelligent level and operation reliability of the heating system.

[0040] In a specific embodiment, the screening of the characteristic frequencies from the pressure fluctuation frequency spectrum diagram based on the fluid impedance matching principle to obtain the effective pulsation frequency band includes: Decouple the frequency components of the pressure fluctuation frequency spectrum diagram to obtain a frequency component matrix, and extract the peak characteristics of the frequency component matrix to obtain a frequency peak sequence; Calculate the pipeline sound speed parameter based on the frequency peak sequence for the pressure fluctuation frequency spectrum diagram, and correct the fluid density of the pipeline sound speed parameter to obtain the corrected sound speed characteristics; Utilize the fluid impedance matching principle to analyze the pipeline impedance characteristics of the frequency peak sequence based on the corrected sound speed characteristics to obtain a pipeline impedance function, and locate the standing wave points of the pipeline impedance function to obtain a standing wave characteristic spectrum; Calculate the propagation attenuation of the pipeline impedance function based on the standing wave characteristic spectrum to obtain an attenuation coefficient curve, and evaluate the impedance matching degree of the attenuation coefficient curve; Divide the frequency band of the pipeline impedance function based on the impedance matching characteristics to obtain an impedance matching frequency band, and extract the characteristic frequencies of the impedance matching frequency band to obtain the effective pulsation frequency band.

[0041] Specifically, this step is an important technical support for improving the dynamic regulation accuracy of the differential pressure valve and enhancing the hydraulic stability of the system. Its core lies in identifying and locking specific frequency disturbance sources that significantly affect the system operation through fluid dynamics modeling. During the operation of an actual heating system, due to factors such as the start and stop of pumps, valve switching, and changes in regional heat loads when hot water flows in the pipeline, complex pressure fluctuations will occur between the supply pipe and the return pipe. These fluctuations not only manifest as irregular pressure pulsations in the time domain but also exhibit multiple vibration components of different intensities and frequencies in the frequency domain. To accurately identify which frequency components pose a major threat to system stability, the system first performs frequency component decoupling on the pressure fluctuation spectrogram obtained by Fourier transform, decomposing it into a frequency component matrix containing multiple frequency components, and further extracting a representative frequency peak sequence. This sequence usually includes the fundamental frequency component that dominates system disturbances, harmonic components generated by fluid nonlinear effects, and random disturbance components caused by external disturbances. Subsequently, the system calculates the fluid sound speed based on the above frequency peak sequence to obtain the pipeline sound speed parameter that reflects the propagation characteristics of hot water in the pipeline. Considering the influence of factors such as fluid density, temperature changes, and the elasticity of the pipe wall material on the sound speed during actual operation, the system further performs multi-dimensional correction on the sound speed parameter to obtain the corrected sound speed characteristics containing the fluid density coefficient, temperature compensation value, and pipe wall elasticity influence factor. This process ensures that the subsequent analysis model can better approximate the fluid behavior under real working conditions. On this basis, the system introduces the principle of fluid impedance matching, combines the corrected sound speed characteristics to model the pipeline impedance characteristics of the frequency peak sequence, and constructs a pipeline impedance function that describes the energy reflection and transmission relationship on the propagation path of hot water in the pipe network. By analyzing the location of the standing wave points of this function, the possible energy aggregation regions inside the system can be identified, namely the node positions, antinode amplitudes, and phase delays in the standing wave characteristic spectrum. This information helps to determine whether there is energy accumulation or reflection in the propagation path of hot water in the pipe network, thus providing a physical basis for subsequent control strategies. Further, the system calculates the propagation attenuation of the pipeline impedance function based on the standing wave characteristic spectrum, obtains the energy loss trend of hot water propagation in the pipe network at different frequencies, and forms an attenuation coefficient curve. By evaluating the impedance matching degree of this curve, the key indicators describing the energy transfer efficiency can be obtained - the reflection coefficient, transmission coefficient, and energy loss rate. These parameters reflect the propagation stability and energy dissipation characteristics of hot water under different frequency disturbances, providing a theoretical support for finally determining the effective pulsation frequency band. Finally, the system divides the pipeline impedance function into frequency bands according to the impedance matching characteristics, identifies the impedance matching frequency band that has the most influence on heating stability and differential pressure regulation response in the system, and further extracts key characteristic frequencies such as the main frequency band interval, resonance frequency point, and attenuation critical frequency from it to form the final effective pulsation frequency band.For example, in the application scenario of an industrial plant area, when the heat load in the production workshop suddenly increases, resulting in a sudden change in the hot water flow rate, the system will quickly identify the corresponding main frequency band interval and activate the dynamic regulation mechanism of the pressure difference valve to avoid the problem of unstable heating caused by local pressure oscillation. In summary, through a series of hydrodynamic processing means such as frequency component decoupling, sound speed correction, impedance modeling, standing wave characteristics, and attenuation analysis, this step constructs a highly intelligent frequency screening mechanism, achieving precise identification and dynamic tracking of the system pressure disturbance source. It is not only the technical basis for the high-precision automatic regulation of the pressure difference valve but also provides a strong guarantee for the stable operation and energy-saving regulation of the entire heating system under complex working conditions.

[0042] In a specific embodiment, the step of locating the standing wave points of the pipeline impedance function to obtain the standing wave characteristic spectrum includes: Performing a spatial period analysis on the pipeline impedance function to obtain a wavelength distribution sequence, and performing a phase accumulation calculation on the wavelength distribution sequence to obtain a phase accumulation curve; Based on the phase accumulation curve, performing an amplitude comparison analysis on the pipeline impedance function to obtain an amplitude comparison result, and extracting extreme points from the amplitude comparison result to obtain standing wave node characteristics; Based on the standing wave node characteristics, performing a spatial harmonic decomposition on the pipeline impedance function to obtain a harmonic component set, and performing a frequency correlation analysis on the harmonic component set to obtain harmonic coupling characteristics; Based on the harmonic coupling characteristics, performing a standing wave analysis on the pipeline impedance function to obtain standing wave positioning parameters, and verifying the fluctuation stability of the standing wave positioning parameters to obtain a positioning stability index; Based on the positioning stability index, performing a feature reconstruction on the standing wave positioning parameters to obtain a standing wave spatial distribution map, and extracting features from the standing wave spatial distribution map to obtain a standing wave characteristic spectrum.

[0043] Specifically, after the system completes the establishment of the pipeline impedance function, it first performs a spatial periodic analysis on it to identify the periodic fluctuation phenomenon caused by the change of boundary conditions during the propagation of hot water in the pipe network. This process analyzes the response law of the impedance function at different spatial positions, extracts the wavelength distribution sequence reflecting the fluctuation characteristics of hot water, and further combines the length information of each section of the pipeline to calculate the corresponding phase accumulation curve. The key parameters contained in this curve, such as the standard wavelength value, phase accumulation amount, and number of spatial periods, provide basic data support for subsequent identification of the standing wave pattern. Subsequently, the system performs an amplitude comparison analysis on the pipeline impedance function based on the above phase accumulation curve to identify the difference in pressure fluctuation intensity at different spatial positions of hot water, thereby obtaining the amplitude comparison result. On this basis, the system further extracts the extreme points therein, that is, the positions where the pressure fluctuation amplitude reaches the maximum or minimum, to form standing wave node characteristics, including information such as node amplitude, antinode position, and node spacing. These characteristics reflect the energy retention area formed by the reflection and superposition effects during the propagation of hot water in the pipe network, and are important bases for judging whether the system is in a stable operating state. To further improve the analytical accuracy of the standing wave characteristics, the system performs a spatial harmonic decomposition on the pipeline impedance function based on the above standing wave node characteristics, extracts the set of main harmonic components constituting the pressure fluctuation, and performs a frequency correlation analysis on these components to identify the fundamental frequency, harmonic ratio, and phase difference therein, forming harmonic coupling characteristics. This process helps to understand the frequency domain structure of hot water fluctuations and the non-linear influencing factors in its propagation path, providing theoretical support for the accurate positioning of subsequent standing wave points. On this basis, the system performs a standing wave analysis on the pipeline impedance function based on the harmonic coupling characteristics, obtains the standing wave positioning parameters describing the position relationship of the standing wave points, and further verifies its fluctuation stability, evaluates its offset trend and amplitude change under different working conditions, and finally outputs the positioning stability index including the standing wave point offset amount, amplitude stability, and phase locking value. This index is used to judge the dynamic change trend of the standing wave characteristics during the operation of the system, ensuring that the subsequent differential pressure adjustment strategy can always act on the most sensitive pressure disturbance area. Finally, the system performs a feature reconstruction on the standing wave positioning parameters based on the positioning stability index, generates a standing wave spatial distribution map that can intuitively reflect the standing wave distribution state of hot water in the pipe network, and extracts a representative standing wave characteristic spectrum from it for subsequent band-pass filtering processing and differential pressure valve servo control. For example, in the application scenario of an industrial plant area, when the production workshop suddenly increases the heat load and causes a sudden change in the hot water flow rate, the system can quickly identify the energy accumulation area through the standing wave characteristic spectrum and adjust the opening of the differential pressure valve to suppress local pressure oscillation, thereby maintaining the heating stability and operation efficiency of the entire system.In summary, through a series of hydrodynamic modeling and signal processing methods such as spatial period analysis, amplitude comparison, harmonic decomposition, and stability verification, this step constructs a high-precision and highly adaptable standing wave recognition mechanism, achieving precise capture of the energy residence area formed during the propagation of hot water in the pipe network. It is not only the core basis for the intelligent adjustment of the pressure difference valve but also provides solid technical support for the hydraulic stability control and energy-saving optimization of the entire heating system under complex operating conditions.

[0044] In a specific embodiment, the collector is used to collect and guide the return water in the fluid medium after heat energy release, so as to re-introduce the recovered hot water into the steam-water plate heat exchanger for circulating heating, including: Conduct multi-path water flow convergence and diversion on the fluid medium after heat energy release to obtain initial return water fluid, and separate and purify impurities in the initial return water fluid through a vortex separator to obtain purified return water medium; Conduct turbulent flow elimination treatment on the purified return water medium through a steady flow device in the collector to obtain laminar flow state return water fluid; Based on preset directional diversion parameters, conduct guiding control on the laminar flow state return water fluid in the confluence cavity to obtain recovered hot water flow, so as to re-introduce the recovered hot water into the steam-water plate heat exchanger for circulating heating.

[0045] Specifically, the water return in the fluid medium after heat energy release is collected and guided by the water collector to reintroduce the recovered hot water into the steam-water plate heat exchanger for circulating heating, including: converging and guiding the multi-path water flow of the fluid medium after heat energy release to obtain the initial water return fluid, and separating and purifying impurities from the initial water return fluid through a vortex separator to obtain the purified water return medium; performing turbulent flow elimination treatment on the purified water return medium through a flow stabilizing device in the water collector to obtain a laminar flow state water return fluid; performing guiding control on the laminar flow state water return fluid in the confluence cavity based on preset directional guiding parameters to obtain the recovered hot water flow, so as to reintroduce the recovered hot water into the steam-water plate heat exchanger for circulating heating. This step is an important technical link for the entire heating system to achieve closed-loop circulation operation, improve energy utilization rate, and ensure the long-term stable operation of the system. In the actual application scenarios of industrial plants, after the heating tasks are completed in different functional areas such as production workshops, office areas, and warehouse areas, the hot water will decrease in temperature due to heat release, forming a fluid medium after heat energy release, and returning to the inlet end of the water collector from the return water pipelines of each area respectively. Since this return water comes from multiple independent branches and there are differences in its flow rate, temperature, and flow state, it is first necessary to perform converging and guiding treatment on these multi-path water flows. As the core device connecting the return water branches of each area and the main return water pipe, the water collector has multiple water inlets and a unified water outlet in its structural design, which can concentrate and guide the originally scattered initial water return fluid to the same direction, thereby obtaining an overall water return fluid with high consistency and providing basic conditions for subsequent purification and regulation. However, since a certain amount of solid particles, rust, or other suspended impurities may be entrained in the return water of each area, especially when the pipe network has been in operation for a long time or the maintenance is not in place, if these impurities are not removed in time, they will cause wear or even blockage to key equipment such as water pumps and heat exchangers, affecting the safety and service life of the system. For this reason, a vortex separator is provided at the front end of the water collector, which uses the centrifugal force generated by the rotation of the fluid to separate the denser impurities from the initial water return fluid, thereby obtaining a cleaner purified water return medium. This process not only improves the quality of the return water but also effectively reduces the maintenance frequency and operation cost of subsequent equipment. On this basis, in order to further improve the flow stability of the return water, the system performs turbulent flow elimination treatment on the purified water return medium through a flow stabilizing device configured inside the water collector. This flow stabilizing device usually consists of a porous rectifying plate, a honeycomb-shaped guiding grid, or a spiral rectifying tube, and its function is to weaken the vortices and disturbances carried by the return water fluid when it enters the main cavity of the water collector, making the water flow tend to be gentle and uniform, and finally forming a laminar flow state water return fluid with a lower Reynolds number. This stable flow state helps to improve the efficiency of the subsequent transportation process and reduce the energy loss and pressure fluctuation caused by uneven flow velocity. Subsequently, the system performs guiding control on the laminar flow state water return fluid in the confluence cavity based on preset directional guiding parameters to ensure that the hot water flows efficiently and orderly to the inlet end of the steam-water plate heat exchanger according to the predetermined path.The directional diversion parameters generally include the set value of the flow velocity, the flow direction control angle, and the angle adjustment strategy of the diversion plate inside the confluence cavity. These parameters are dynamically optimized according to the actual operating conditions of the system and the heat load requirements. For example, in the low-temperature environment in winter, when the production workshop operates at a high load continuously, the return water volume is large and the temperature is relatively low. At this time, the system can appropriately increase the diversion angle to accelerate the flow velocity of the return water and avoid local water accumulation or retention. During off-peak hours, such as at night or on holidays, when the return water volume in the office area and the warehouse area is small, the system can reduce the diversion intensity to maintain a stable flow state and reduce energy consumption. Finally, the recycled hot water flow after multi-path convergence, impurity purification, turbulence elimination, and directional diversion treatment is stably transported to the steam-water plate heat exchanger to exchange heat with the high-temperature steam generated by the boiler again, completing a new round of heat energy conversion process. This complete return water circulation process not only realizes the efficient recovery and reuse of heat energy but also significantly improves the energy-saving level and environmental protection performance of the entire heating system. In summary, through a series of technical means such as multi-path water flow convergence, vortex separation and purification, steady flow treatment, and directional diversion control, this step constructs an efficient, stable, and controllable return water recovery system, providing reliable support for the continuous operation of the steam-water plate heat exchanger. It is not only a key link for the system to achieve an energy closed-loop cycle but also lays a solid foundation for subsequent heat distribution, temperature control adjustment, and system stability control, having important engineering application value and promotion prospects.

[0046] The above describes the sub-region heating control method in the embodiments of the present invention. Next, the sub-region heating control device in the embodiments of the present invention will be described. Please refer to Figure 2 , an embodiment of the sub-region heating control device in the embodiments of the present invention includes: An exchange module 21, configured to perform heat exchange processing on the high-temperature steam generated by the boiler through a steam-water plate heat exchanger, so that the high-temperature steam is converted into a hot water medium; A conveying module 22, configured to pressurize and circulate the hot water medium through a hot water pump to obtain a constant-pressure and constant-flow hot water fluid; A distribution module 23, configured to multi-path distribute the constant-pressure and constant-flow hot water fluid to a preset area through the water distributor, facilitating sub-region heat distribution and temperature adjustment control; wherein, the water distributor is arranged in the area, and the area includes a warehouse area heating region, an office area heating region, and a production workshop heating region provided with independent temperature control mechanisms; An adjustment module 24, configured to dynamically balance the pressure difference between the water supply pipe and the return pipe in the water distributor through a pressure difference valve during the process of multi-path distributing to a preset area, to obtain a fluid medium after heat energy release; The collecting module 25 is configured to collect and guide the return water in the fluid medium after heat release based on the water collector, so as to re-introduce the recovered hot water into the steam-water plate heat exchanger for circulating heating.

[0047] In this embodiment, for the specific implementation of each unit in the above device embodiment, please refer to that described in the above method embodiment, and details will not be repeated here.

[0048] Refer to Figure 3 , an embodiment of the present invention also provides a computer device, the internal structure of which can be as Figure 3 shown. The computer device includes a processor, a memory, a display screen, an input device, a network interface, and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store the corresponding data in this embodiment. The network interface of the computer device is used to communicate with an external terminal through a network connection. The computer program, when executed by the processor, implements the above method.

[0049] Those skilled in the art can understand that Figure 3 the structure shown in

[0050] is only a block diagram of a part of the structure related to the solution of the present invention, and does not constitute a limitation on the computer device to which the solution of the present invention is applied.

[0051] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database, or other medium provided by the present invention and used in the embodiments can include non-volatile and / or volatile memories. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (SSRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM, etc.

[0052] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, device, article or method including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, device, article or method. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, device, article or method including that element.

[0053] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A method for controlling district heating, characterized in that, Applied to a heating system, the heating system includes a steam-water plate heat exchanger, a water distribution header, a water collection header, a boiler, and a hot water pump, and comprises the following steps: Perform heat exchange treatment on the high-temperature steam generated by the boiler through the steam-water plate heat exchanger to convert the high-temperature steam into a hot water medium; Pressurize and circulate the hot water medium through the hot water pump to obtain a constant-pressure and constant-flow hot water fluid; Through the water distribution header, the constant-pressure and constant-flow hot water fluid is distributed in multiple paths to a preset area, facilitating sub-area heat distribution and temperature adjustment control; wherein, the water distribution header is arranged in the area, and the area includes a warehouse area heating area, an office area heating area, and a production workshop heating area provided with independent temperature control mechanisms; During the process of distributing in multiple paths to the preset area, dynamically balance the pressure difference between the water supply pipe and the water return pipe in the water distribution header through a pressure difference valve to obtain a fluid medium after heat energy release; Based on the water collection header, conduct a collection and guiding process on the return water in the fluid medium after heat energy release to re-introduce the recovered hot water into the steam-water plate heat exchanger for circulating heating.

2. The sub-region heating control method according to claim 1, characterized in that The step of performing heat exchange treatment on the high-temperature steam generated by the boiler through the steam-water plate heat exchanger to convert the high-temperature steam into a hot water medium includes: Regulate the pressure parameters of the steam control valve to convert the high-temperature steam generated by the boiler into a steady-pressure steam flow, and conduct condensate separation treatment on the steady-pressure steam flow to obtain a dry steam medium; Conduct multi-stage heat conduction and automatic flow rate adjustment on the dry steam medium through the stainless steel corrugated plate group in the steam-water plate heat exchanger to obtain a preset hot water medium with a constant outlet water temperature.

3. The sub-region heating control method according to claim 1, wherein The step of pressurizing and circulating the hot water medium through the hot water pump to obtain a constant-pressure and constant-flow hot water fluid includes: Conduct bubble elimination treatment on the preset hot water medium to obtain a bubble-free hot water fluid, and conduct primary pressurization on the bubble-free hot water fluid through a preset semi-open centrifugal pump impeller to obtain a primary pressure hot water input flow; Conduct dynamic speed regulation on the hot water pump through a variable frequency drive to obtain a speed self-adaptive interval parameter, and based on the speed self-adaptive interval parameter, control a preset impeller guiding mechanism to conduct thrust conversion on the primary pressure hot water input flow to obtain a pumped hot water with balanced pressure; Suppress the pressure fluctuation of the pumped hot water with balanced pressure to obtain a hot water medium after pulsation elimination; Conduct volume expansion compensation caused by temperature change on the hot water medium after pulsation elimination through an expansion tank to obtain a constant-pressure and constant-flow hot water fluid.

4. The sub-region heating control method according to claim 1, characterized in that The step of distributing the constant-pressure and constant-flow hot water fluid in multiple paths to a preset area through the water distribution header includes: Conduct hydraulic separation treatment on the constant-pressure and constant-flow hot water fluid to obtain multiple paths of parallel hot water, and conduct flow direction guidance on the multiple paths of parallel hot water to obtain a flow direction-guided hot water with uniform distribution; Distribute the flow direction-guided hot water in multiple paths along the water distribution header to a preset area, facilitating sub-area heat distribution and temperature adjustment control.

5. The sub-region heating control method according to claim 1, characterized in that, The step of dynamically balance the pressure difference between the water supply pipe and the water return pipe in the water distribution header through a pressure difference valve to obtain a fluid medium after heat energy release includes: Detect the pressure difference between the water supply pipe and the return pipe in the water distributor through a preset pressure sensor to obtain a pipeline pressure difference parameter, and analyze the pressure fluctuation of the pipeline pressure difference parameter to obtain a pressure pulsation characteristic curve; Based on the pressure pulsation characteristic curve, perform pressure balance control calculation on the water supply pipe and the return pipe through a pressure difference valve to obtain a pipeline pressure balance parameter; Based on the pipeline pressure balance parameter, control the liquid in the water distributor to perform multi-stage series flow distribution and heat energy release to obtain a fluid medium after heat energy release.

6. The sub-zone heating control method according to claim 5, characterized in that, The step of performing pressure balance control calculation on the water supply pipe and the return pipe through a pressure difference valve based on the pressure pulsation characteristic curve to obtain a pipeline pressure balance parameter includes: Perform frequency domain feature decomposition on the pressure pulsation characteristic curve through Fourier transform technology to obtain a pressure fluctuation frequency spectrum diagram; Based on the fluid impedance matching principle, screen the characteristic frequencies of the pressure fluctuation frequency spectrum diagram to obtain an effective pulsation frequency band, and perform band-pass filtering on the effective pulsation frequency band to obtain a purified pressure fluctuation signal; Calculate the spool displacement of the purified pressure fluctuation signal through the servo control mechanism of the pressure difference valve to obtain a dynamic adjustment stroke parameter; Based on the dynamic adjustment stroke parameter, perform non-linear correction on the pressure balance between the water supply pipe and the return pipe to obtain a pipeline pressure balance parameter.

7. The sub-zone heating control method according to claim 1, wherein The step of collecting and guiding the return water in the fluid medium after heat energy release based on the water collector to re-introduce the recovered hot water into the steam-water plate heat exchanger for circulating heating includes: Perform multi-way water flow convergence and diversion on the fluid medium after heat energy release to obtain an initial return water fluid, and separate and purify impurities in the initial return water fluid through a vortex separator to obtain a purified return water medium; Perform turbulent flow elimination treatment on the purified return water medium through a flow stabilizing device in the water collector to obtain a laminar flow state return water fluid; Based on preset directional diversion parameters, perform guiding control on the laminar flow state return water fluid in the confluence cavity to obtain a recovered hot water flow, so as to re-introduce the recovered hot water into the steam-water plate heat exchanger for circulating heating.

8. A zoned heating control device, characterized in that, Applied to a heating system, the heating system includes a steam-water plate heat exchanger, a water distributor, a water collector, a boiler and a hot water pump, and includes: An exchange module for performing heat exchange treatment on the high-temperature steam generated by the boiler through the steam-water plate heat exchanger to convert the high-temperature steam into a hot water medium; A conveying module for pressurizing and circulating the hot water medium through a hot water pump to obtain a constant pressure and constant flow hot water fluid; A distribution module for distributing the constant pressure and constant flow hot water fluid in multiple paths through the water distributor to a preset area for sub-regional heat distribution and temperature adjustment control; wherein, the water distributor is arranged in the area, and the area includes a warehouse area heating area, an office area heating area and a production workshop heating area provided with an independent temperature control mechanism; An adjustment module for dynamically balancing the pressure difference between the water supply pipe and the return pipe in the water distributor through a pressure difference valve during the process of distributing in multiple paths to a preset area to obtain a fluid medium after heat energy release; A collecting module, configured to collect and guide the return water in the fluid medium after heat release based on a water collector, so as to re-introduce the recovered hot water into a steam-water plate heat exchanger for circulating heating.

9. A computer device, comprising a memory and a processor, wherein a computer program is stored in the memory, characterized in that, When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, 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 7 are implemented.

Images