Intelligent decision machine for intelligent control of heat exchange station

Abstract

This invention belongs to the technical field of heating and heat exchange equipment, and discloses an intelligent decision-making machine for intelligent control heat exchange stations. The internal structure of the machine is divided into a power generation chamber, a heat exchange chamber, a flow distribution chamber, and a control chamber from bottom to top. The power generation chamber contains a micro differential pressure power generation module and a supercapacitor energy storage module. The heat exchange chamber contains a deformable plate heat exchanger, which uses millimeter-level stainless steel corrugated connecting plates to form a retractable closed flow channel. Passive basic temperature regulation is achieved through a two-way shape memory alloy spring, with precise fine-tuning using a dual-output shaft telescopic cylinder. The flow distribution chamber contains a biomimetic leaf vein-type flow distributor to achieve automatic flow balancing in the secondary network. The control chamber contains an edge control unit and a remote communication module. This equipment requires no external power supply or electric regulating valve, is highly energy efficient, reliable, and maintenance-free, effectively solving the problems of traditional intelligent heat exchange stations that are paralyzed by power outages, have high energy consumption, and require frequent maintenance.

Description

Technical Field

[0001] This invention belongs to the technical field of heating and heat exchange equipment, specifically relating to an intelligent decision-making machine for intelligent control heat exchange stations. Background Technology

[0002] Central heating systems are an important component of modern urban infrastructure, playing a crucial role in providing winter heating for residential and commercial buildings. As the core node of the central heating system, heat exchange stations are responsible for converting high-temperature primary network hot water supplied by power plants into low-temperature secondary network hot water suitable for users. Their operational efficiency, reliability, and control precision directly affect the heating quality and energy consumption level of the entire heating system.

[0003] With the development of intelligent technologies, various intelligent heat exchange station devices have emerged on the market, attempting to improve the automation level of heat exchange stations by introducing electronic control systems. These intelligent heat exchange stations typically employ an architecture combining a PLC controller with temperature and pressure sensors and electric regulating valves, enabling basic automatic temperature regulation and remote monitoring functions, thus reducing the workload of maintenance personnel to some extent. However, current intelligent decision-making machines in intelligent control heat exchange stations still have many fundamental shortcomings in practical applications, failing to truly achieve fully autonomous and reliable intelligent decision-making and operation.

[0004] First, the core heat exchange equipment in traditional intelligent heat exchange stations still uses plate heat exchangers with fixed spacing, which cannot be dynamically adjusted according to changes in heat load. At the beginning and end of the heating season, when the heat load is low, the fixed plate spacing leads to excessively high secondary network water temperatures, resulting in energy waste. Conversely, during periods of high heat load in severe cold weather, the fixed plate spacing may not meet the heating demand. To address this issue, existing technologies typically involve installing electrically operated regulating valves on both the primary and secondary pipelines, with controllers adjusting valve openings based on temperature signals. While this method achieves some flow regulation, it is essentially a passive throttling control, increasing system complexity and cost. Furthermore, the throttling effect of the regulating valves generates significant pressure losses, reducing the overall energy efficiency of the system.

[0005] Secondly, all current intelligent control systems in heat exchange stations heavily rely on an external 220V power supply for their intelligent decision-making, data acquisition, and execution mechanisms. All these mechanisms require external power. In the event of a power outage, the entire intelligent control system will immediately fail, the electric regulating valves will malfunction, and the heat exchange station will lose its temperature regulation capability, severely impacting normal heating supply to users. Although some heat exchange stations are equipped with backup generators, these generators suffer from problems such as startup delays, high maintenance costs, and insufficient reliability, making it difficult to meet the stringent requirements of continuous heating.

[0006] Secondly, the rubber gaskets of traditional plate heat exchangers are prone to aging and cracking, typically requiring replacement every 3-5 years. This not only increases maintenance costs and workload but also necessitates stopping heating during gasket replacement, causing inconvenience to users. Furthermore, the limited temperature and pressure resistance of rubber gaskets restricts the application of plate heat exchangers under higher parameter conditions, becoming a major obstacle to achieving long-term maintenance-free operation of intelligent heat exchange stations.

[0007] Furthermore, existing intelligent heat exchange stations typically use traditional valve regulation for secondary network flow distribution, which is prone to hydraulic imbalance. This leads to overheating for nearby users and insufficient heating for distant users, affecting the overall heating quality. To solve the hydraulic imbalance problem, multiple on-site commissioning operations by professionals are required, which is not only labor-intensive but also difficult to maintain in the long term, making it impossible to automatically achieve balanced flow distribution through an intelligent decision-making system. Summary of the Invention

[0008] In view of the problems mentioned in the background art above, the purpose of this invention is to provide an intelligent decision-making machine for intelligent control of heat exchange stations.

[0009] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows: A smart decision-making machine for an intelligent heat exchange station includes a housing. The interior of the housing is divided into four chambers from bottom to top according to their functions: a power generation chamber, a heat exchange chamber, a flow distribution chamber, and a control chamber, and these chambers are separated. The power generation chamber is used to supply power to the entire machine body; The flow distribution cavity is used to distribute the fluid after heat exchange in the heat exchange cavity to the user end; The control cavity is used to receive feedback signals and control the overall state of the machine body; The power generation chamber is equipped with a micro differential pressure power generation module and a power supply. The micro differential pressure power generation module generates electricity by using the fluid that enters the heat exchange chamber for heat exchange as power. A deformable plate heat exchanger is installed inside the heat exchange chamber. The deformable plate heat exchanger includes a fixed end plate, a movable end plate, and multiple heat exchange plates. All the heat exchange plates are stacked between the fixed end plate and the movable end plate. Multiple sets of guide rods are installed between the fixed end plate and the movable end plate. A double-outlet telescopic cylinder is installed on the upper set of guide rods. The two working ends of the double-outlet telescopic cylinder are respectively connected to the fixed end plate and the movable end plate. Pull rods are connected to the front and rear sides of the fixed end plate and the movable end plate. A double-stroke shape memory alloy spring is connected between the pull rod on the fixed end plate and the pull rod on the movable end plate. The adjacent heat exchange plates are connected in an S-shape with millimeter-level stainless steel corrugated connecting plates. The millimeter-level stainless steel corrugated connecting plates form a tortuous flow channel between the adjacent heat exchange plates. The flow paths of the flow channels on both sides of a heat exchange plate are opposite. The flow channels on both sides of a heat exchange plate must contain the heat exchange fluid and the fluid being heat exchanged. There is no situation where only one fluid flows. When the dual-output telescopic cylinder is in operation, it causes a change in the distance between the fixed end plate and the moving end plate. With the continuous filling of fluid, the millimeter-level stainless steel corrugated connecting plate expands and contracts to adapt to the change in the distance between two adjacent heat exchange plates. Therefore, the flow rate of the fluid passing through the flow channel also changes.

[0010] Further defined, all heat exchange plates are divided into odd-numbered heat exchange plates and even-numbered heat exchange plates, which are stacked alternately. Each heat exchange plate is provided with a fluid through hole. The corresponding fluid through holes on adjacent odd-numbered heat exchange plates are connected by a primary side sliding connecting pipe, which passes through the corresponding fluid through hole of the even-numbered heat exchange plate located between two odd-numbered heat exchange plates. The corresponding fluid through holes on adjacent even-numbered heat exchange plates are connected by a secondary side sliding connecting pipe, which passes through the corresponding fluid through hole of the odd-numbered heat exchange plate located between two even-numbered heat exchange plates. The primary side sliding connecting pipe and the secondary side sliding connecting pipe... The moving connecting pipes have the same structure; both the primary and secondary sliding connecting pipes are equipped with sliding seals between themselves and the heat exchange plates they penetrate, ensuring that the primary heat exchange fluid flows only in the channels corresponding to all odd-numbered heat exchange plates, and the secondary heat exchange fluid flows only in the channels corresponding to all even-numbered heat exchange plates, forming a full-process staggered counter-current heat exchange structure. This ensures that the hot and cold fluids maintain the maximum temperature difference throughout the entire heat exchange process, and the heat exchange efficiency reaches the theoretical maximum value. At the same time, the sliding seal structure between the sliding connecting pipes and the plates realizes the flow channel connectivity and sealing under continuously adjustable plate spacing, which is the core structural basis of this invention.

[0011] Further specified, the millimeter-level stainless steel corrugated connecting piece is made of 316L stainless steel with a wall thickness of 0.1mm. Both ends of the millimeter-level stainless steel corrugated connecting piece are laser-welded to the periphery of the flow channel of the two adjacent heat exchange plates to form a completely closed flow channel. The millimeter-level stainless steel corrugated connecting piece is provided with 3 continuous corrugations, with a single corrugation height of 2mm and a total expansion and contraction of 6mm, ensuring that it has sufficient expansion and contraction, extremely low expansion and contraction resistance, and an ultra-long service life. The permanent sealing method of laser welding completely eliminates the leakage risk of traditional rubber gaskets and realizes the lifelong maintenance-free operation of the heat exchange core.

[0012] Further defining the subdivision chamber, it includes a subdivision chamber shell, with an inlet at the bottom of the shell connected to the secondary outlet of the deformable plate heat exchanger. A biomimetic leaf vein-type flow distributor with progressively branching fractal channels is fixedly installed inside the subdivision chamber shell. Multiple outlets connected to the biomimetic leaf vein-type flow distributor are evenly distributed on the sidewall of the subdivision chamber shell. These outlets are connected to the water supply pipes of each user. Utilizing the self-balancing characteristics of the fractal channels, automatic and uniform distribution of the secondary network flow is achieved, resolving hydraulic imbalance issues without manual adjustment and ensuring consistent heating temperatures for all users.

[0013] Further specified, the phase transition temperature of the two-way shape memory alloy spring is 55±1℃. When the secondary side water supply temperature is higher than 55℃, the two-way shape memory alloy spring contracts, pulling the moving end plate towards the fixed end plate; when the secondary side water supply temperature is lower than 55℃, the two-way shape memory alloy spring extends, pushing the moving end plate away from the fixed end plate, thus achieving passive base temperature regulation. By utilizing the phase transition characteristics of the two-way shape memory alloy spring to achieve passive base temperature regulation, the secondary network water supply temperature can be stabilized at around 55℃ without any power supply or control circuit. Even in the event of a power outage or failure of the electrical control system, the system can still provide heat normally, greatly improving the reliability of the system.

[0014] Furthermore, the flow channel is filled with phase change microcapsules, and the ports of the primary and secondary sliding connecting pipes are equipped with perforated plates to block the phase change microcapsules from passing through. The latent heat characteristics of the phase change material increase the system's thermal energy storage capacity, which can smooth out the temperature fluctuations of the secondary network water supply caused by primary network temperature fluctuations and heat load changes, thereby further improving the heating quality. The design of the perforated plates effectively prevents the phase change microcapsules from being lost with the fluid, ensuring the long-term stability of the energy storage effect.

[0015] Further specifying, the micro differential pressure power generation module includes an axial-flow turbine and a permanent magnet synchronous generator. The impeller of the axial-flow turbine is made of 316L stainless steel. The permanent magnet synchronous generator is coaxially connected to the axial-flow turbine. The micro differential pressure power generation module is connected in series on the primary side inlet pipe of the deformable plate heat exchanger. It generates electricity by utilizing the pressure difference between the primary side pipe network and the deformable plate heat exchanger, replacing the traditional pressure reducing valve and converting the originally wasted pressure energy into electrical energy, thus improving the system's energy efficiency. The design of the 316L stainless steel impeller ensures its long-term reliable operation under hot water conditions.

[0016] Further specifying, the power source is a supercapacitor energy storage module, which is electrically connected to the micro differential pressure power generation module to store the electrical energy generated by the micro differential pressure power generation module. The supercapacitor energy storage module is also electrically connected to the dual-output shaft telescopic cylinder and the control cavity to provide them with working power. The supercapacitor energy storage module has advantages such as high charge-discharge cycles, long lifespan, maintenance-free operation, and resistance to high and low temperatures. It can stably store the electrical energy generated by the micro differential pressure power generation module, providing a reliable working power source for the electric telescopic cylinder and control system, thus achieving complete energy self-sufficiency for the entire system.

[0017] Furthermore, the enclosure is equipped with a conduit connecting the power generation chamber and the control chamber, which can effectively protect the cables from fluid and mechanical damage, while making the internal wiring of the equipment neater and more aesthetically pleasing, and facilitating later maintenance.

[0018] Furthermore, the enclosure is provided with a clearance opening for pipeline routing, and an antenna connected to the control cavity is installed on the top of the enclosure, which facilitates on-site installation of the equipment and pipeline connection; the antenna installed on the top ensures the signal strength of the LoRa remote communication module, enabling real-time remote transmission and monitoring of the heat exchange station's operating data.

[0019] The beneficial effects of using the present invention are as follows: 1. This invention uses a double-output-shaft telescopic cylinder in conjunction with a double-stroke shape memory alloy spring to drive the moving end plate to move relative to the fixed end plate, thereby causing the heat exchange plates to generate relative displacement. The millimeter-level stainless steel corrugated connecting plates extend and retract synchronously with the spacing of the heat exchange plates to continuously change the flow cross section of the flow channel, realizing continuous dynamic adjustment of the plate spacing of the plate heat exchanger. It can automatically adjust the flow rate of the primary and secondary sides according to the change of heat load, eliminating the need for additional electric regulating valves and avoiding the throttling losses of regulating valves. The system energy efficiency is more than 30% higher than that of traditional heat exchange stations.

[0020] 2. This invention features a dual adjustment structure that uses a dual-stroke shape memory alloy spring and a dual-output shaft telescopic cylinder to drive the moving end plate in parallel. It employs a dual adjustment mechanism of passive basic adjustment with a dual-stroke shape memory alloy spring and precise fine-tuning with an electric telescopic cylinder. This ensures the system's basic heating capacity during power outages and achieves precise control of the secondary network water supply temperature, with a control accuracy of ±0.5℃.

[0021] 3. By utilizing a micro differential pressure power generation module to recover the pressure energy of the primary side pipeline network, combined with a supercapacitor energy storage module, the entire system achieves complete energy self-sufficiency, eliminating the need for an external 220V power supply and completely solving the problem of traditional intelligent heat exchange stations becoming paralyzed upon power outages.

[0022] 4. The millimeter-level stainless steel corrugated connecting plate laser welding sealing structure completely replaces the traditional rubber sealing gasket, eliminating the risk of leakage. The service life of the heat exchange core can reach more than 30 years, achieving lifetime maintenance-free operation.

[0023] 5. It adopts a full counter-current heat exchange structure, which improves the heat exchange efficiency by more than 10% compared with traditional plate heat exchangers; the flow channel is filled with phase change microcapsules, which increases the system's thermal energy storage capacity, effectively suppresses temperature fluctuations, and improves the stability of heating.

[0024] 6. The biomimetic leaf vein flow distributor automatically distributes the secondary network flow evenly, solving the hydraulic imbalance problem without manual adjustment and ensuring consistent heating temperature for all users. Attached Figure Description

[0025] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is a front axonometric structural diagram of an embodiment of an intelligent decision-making machine for an intelligent heat exchange station according to the present invention; Figure 2 This is a schematic diagram of the rear axonal structure of an embodiment of an intelligent decision-making machine for an intelligent heat exchange station according to the present invention; Figure 3 This is a schematic diagram of the internal structure of an embodiment of an intelligent decision-making machine for an intelligent heat exchange station according to the present invention; Figure 4 This is a schematic diagram of the internal structure of an intelligent decision-making machine for an intelligent heat exchange station according to an embodiment of the present invention. Figure 5 This is a schematic diagram of a deformable plate heat exchanger structure according to an embodiment of an intelligent decision-making machine for an intelligent control heat exchange station of the present invention. Figure 6 This is a schematic diagram of the structure of the heat exchange plates and millimeter-level stainless steel corrugated connecting pieces in an embodiment of the intelligent decision-making machine for an intelligent control heat exchange station according to the present invention. Figure 7 This is a schematic cross-sectional view of the fluid through-hole and the primary side sliding connecting pipe in an embodiment of an intelligent decision-making machine for an intelligent heat exchange station according to the present invention. Figure 8 This is a schematic diagram of the heat exchange plate arrangement and installation structure according to an embodiment of the intelligent decision-making machine for an intelligent heat exchange station of the present invention; The symbols for the main components are explained below: 1. Housing; 3. Power generation chamber; 4. Heat exchange chamber; 5. Diversion chamber; 6. Control chamber; 7. Miniature differential pressure power generation module; 8. Power supply; 9. Deformable plate heat exchanger; 10. Conduit; 11. Circumvention port; 12. Antenna; Fixed end plate 91; Moving end plate 92; Heat exchange plate 93; Fluid through hole 931; Primary side sliding connecting pipe 932; Guide rod 94; Double output shaft telescopic cylinder 95; Tie rod 96; Double-stroke shape memory alloy spring 97; Millimeter-level stainless steel corrugated connecting plate 98; Flow channel 99; Phase change microcapsules 991; perforated plate 992; 51; 52; 53. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] like Figures 1 to 8 As shown, the present invention provides an intelligent decision-making machine for an intelligent heat exchange station, which includes a housing 1. The interior of the housing 1 is divided into four chambers from bottom to top according to their functions: a power generation chamber 3, a heat exchange chamber 4, a flow distribution chamber 5, and a control chamber 6, and these chambers are separated. The power generation chamber 3 is used to supply power to the entire machine body; The flow distribution chamber 5 is used to distribute the fluid after heat exchange in the heat exchange chamber 4 to the user end. Control cavity 6 is used to receive feedback signals and control the overall state of the machine body; The generator chamber 3 is equipped with a micro differential pressure power generation module 7 and a power supply 8. The micro differential pressure power generation module 7 generates electricity by using the fluid that enters the heat exchange chamber 4 for heat exchange as power. A deformable plate heat exchanger 9 is installed inside the heat exchange chamber 4; The deformable plate heat exchanger 9 includes a fixed end plate 91, a movable end plate 92, and multiple heat exchange plates 93. All heat exchange plates 93 are stacked between the fixed end plate 91 and the movable end plate 92. Multiple sets of guide rods 94 are installed between the fixed end plate 91 and the movable end plate 92. A double-outlet telescopic cylinder 95 is installed on the upper set of guide rods 94. The two working ends of the double-outlet telescopic cylinder 95 are respectively connected to the fixed end plate 91 and the movable end plate 92. Pull rods 96 are connected to the front and rear sides of the fixed end plate 91 and the movable end plate 92. A double-stroke shape memory alloy spring 97 is connected between the pull rods 96 on the fixed end plate 91 and the pull rods 96 on the movable end plate 92. Two adjacent heat exchange plates 93 are connected in an S-shape by millimeter-level stainless steel corrugated connecting plates 98. The millimeter-level stainless steel corrugated connecting plates 98 form a tortuous flow channel 99 between the two adjacent heat exchange plates 93. The flow paths of the flow channels 99 on both sides of a heat exchange plate 93 are opposite. The flow in the flow channels 99 on both sides of a heat exchange plate 93 must be the heat exchange fluid and the fluid being heat exchanged. There is no situation where only one fluid flows. When the double-outlet telescopic cylinder 95 is running, it causes the distance between the fixed end plate 91 and the moving end plate 92 to change. With the continuous filling of fluid, the millimeter-level stainless steel corrugated connecting plate 98 expands and contracts to adapt to the change in the distance between the two adjacent heat exchange plates 93. Therefore, the fluid flow rate through the flow channel 99 also changes.

[0028] In this implementation case, when using an intelligent decision-making machine for a heat exchange station with intelligent control, the interior of the housing 1 is divided into four independent functional chambers by a horizontally sealed heat insulation plate. From bottom to top, the four chambers are: power generation chamber 3, heat exchange chamber 4, flow distribution chamber 5, and control chamber 6. A micro differential pressure power generation module 7 and a power supply 8 are fixedly installed in the power generation chamber 3. The inlet of the micro differential pressure power generation module 7 is connected to the external primary heating network, and the outlet is connected to the primary inlet of the deformable plate heat exchanger 9. The heat exchange chamber 4 is equipped with a bottom-mounted... A deformable plate heat exchanger 9 is fixedly installed on the plate. The two ends of the deformable plate heat exchanger 9 are a fixed end plate 91 and a movable end plate 92, respectively. Multiple heat exchange plates 93 are stacked parallel between the fixed end plate 91 and the movable end plate 92. Multiple sets of guide rods 94 horizontally penetrate the fixed end plate 91 and the movable end plate 92, with both ends of the guide rods 94 fixedly connected to the inner walls of both sides of the heat exchange chamber 4. A double-output shaft telescopic cylinder 95 is slidably installed on the upper set of guide rods 94. The two output ends of the double-output shaft telescopic cylinder 95 are respectively connected to the fixed end plate 91 and the movable end plate 92. The movable end plate 92 is fixedly connected; multiple tie rods 96 are fixedly connected to the front and rear outer walls of both the fixed end plate 91 and the movable end plate 92. A double-stroke shape memory alloy spring 97 connects the tie rods 96 on the fixed end plate 91 to the corresponding tie rods 96 on the movable end plate 92; millimeter-sized stainless steel corrugated connecting plates 98 connect the periphery of the flow channels of two adjacent heat exchange plates 93, and the millimeter-sized stainless steel corrugated connecting plates 98 and the two adjacent heat exchange plates 93 together form a closed flow channel 99; the fluid in the adjacent flow channels 99... The flow directions are arranged in opposite directions, so that the heat exchange fluid and the fluid being heat-exchanged flow through both sides of any heat exchange plate 93 respectively; the diversion chamber 5 is located above the heat exchange chamber 4, the inlet of the diversion chamber 5 is connected to the secondary side outlet of the deformable plate heat exchanger 9, and the multiple outlets of the diversion chamber 5 are connected to the water supply pipes of the external user end respectively; the control chamber 6 is located above the diversion chamber 5, and the edge control unit is installed in the control chamber 6. The edge control unit is electrically connected to the dual-output shaft telescopic cylinder 95, the micro differential pressure power generation module 7 and the power supply 8 respectively. High-temperature, high-pressure hot water from the primary side enters the micro differential pressure power generation module 7 from the external pipe network, driving the impeller inside the micro differential pressure power generation module 7 to rotate, converting pressure energy into electrical energy. The generated electrical energy is stored in the power supply 8 to power all electrical components of the entire system. After pressure reduction, the primary side hot water enters the primary side flow channel of the deformable plate heat exchanger 9, where it exchanges heat with the low-temperature heat exchange fluid in the secondary side flow channel through the heat exchange plates 93. The primary side cold water after heat exchange flows out from the primary side outlet of the deformable plate heat exchanger 9 and returns to the external primary side pipe network. The heated secondary side hot water enters the distribution chamber 5 from the secondary side outlet of the deformable plate heat exchanger 9, and after being evenly distributed by the distribution chamber 5, it is delivered to each user end. When the secondary side supply water temperature rises, the two-way shape memory alloy spring 97 directly senses the temperature change and undergoes a phase change contraction. The resulting tension pulls the moving end plate 92 along the guide rod 94 towards the fixed end plate 91, causing the spacing between all adjacent heat exchange plates 93 to decrease synchronously and uniformly. The millimeter-level stainless steel corrugated connecting piece 98 folds and deforms as the plate spacing decreases, always maintaining the completely closed state of the flow channel 99. The flow area of ​​the flow channel 99 decreases, the flow rates of the primary and secondary fluids decrease simultaneously, the total heat exchange decreases, and the secondary side supply water temperature drops accordingly. When the secondary side supply water temperature decreases, the two-way shape memory alloy spring 97... The shape memory alloy spring 97 undergoes a reverse phase change and elongates, generating thrust that pushes the moving end plate 92 along the guide rod 94 away from the fixed end plate 91, causing the spacing between all adjacent heat exchange plates 93 to increase synchronously and uniformly. The millimeter-level stainless steel corrugated connecting plate 98 expands and deforms as the plate spacing increases, increasing the flow area of ​​the flow channel 99, increasing the flow rate of the primary and secondary fluids simultaneously, raising the total heat exchange, and causing the secondary water supply temperature to rise accordingly. Under the control of the control chamber 6, the double-outlet telescopic cylinder 95 precisely fine-tunes the position of the moving end plate 92, further improving the accuracy of temperature control. Control cavity 6 is the decision-making unit; The entire system requires no electric regulating valves on the primary and secondary side pipelines, completely avoiding throttling losses and significantly improving the overall energy efficiency of the system. It uses a two-way shape memory alloy spring 97 for basic temperature regulation, achieving automatic temperature control without any external power supply, sensors, or control circuits. Even in the event of a complete power outage, the system can maintain normal heating capacity. Millimeter-level stainless steel corrugated connecting plates 98 are used as sealing and expansion components for the flow channels, completely replacing the rubber gaskets of traditional plate heat exchangers, fundamentally eliminating the risk of leakage and significantly extending the service life of the equipment.

[0029] Preferably, all heat exchange plates 93 are divided into odd-numbered heat exchange plates and even-numbered heat exchange plates, which are stacked alternately. Each heat exchange plate 93 is provided with a fluid through hole 931. The corresponding fluid through holes on adjacent odd-numbered heat exchange plates are connected by a primary side sliding connecting pipe 932, which passes through the corresponding fluid through hole 931 of the even-numbered heat exchange plate located between two odd-numbered heat exchange plates. The corresponding fluid through holes on adjacent even-numbered heat exchange plates are connected by a secondary side sliding connecting pipe, which passes through... The fluid passages are located between two even-numbered heat exchange plates and the corresponding odd-numbered heat exchange plates. The primary-side sliding connecting pipe 932 and the secondary-side sliding connecting pipe have the same structure. Sliding seals are provided between the primary-side sliding connecting pipe 932 and the heat exchange plates 93 through which they pass, so that the primary-side heat exchange fluid flows only in the flow channels 99 corresponding to all odd-numbered heat exchange plates, and the secondary-side heat exchange fluid flows only in the flow channels 99 corresponding to all even-numbered heat exchange plates, forming a full-process staggered countercurrent heat exchange structure.

[0030] In this embodiment, all heat exchange plates 93 are stacked alternately in odd and even order, and each heat exchange plate 93 has fluid through holes 931 at its four corners. The fluid through holes 931 on two adjacent odd-order heat exchange plates are connected by a primary side sliding connecting pipe 932, which passes through the fluid through holes 931 on the even-order heat exchange plates located between two odd-order heat exchange plates. The fluid through holes 931 on two adjacent even-order heat exchange plates are connected by a secondary side sliding connecting pipe. The secondary sliding connecting pipe passes through the fluid through hole 931 on the odd-numbered heat exchange plate located between two even-numbered heat exchange plates; a sliding seal is provided between the outer wall of the primary sliding connecting pipe 932 and the secondary sliding connecting pipe and the inner wall of the fluid through hole 931 of the heat exchange plate 93 through which they pass; the primary heat exchange fluid flows through the primary sliding connecting pipe 932 in sequence through the flow channel 99 corresponding to all odd-numbered heat exchange plates, and the secondary heat exchange fluid flows through the secondary sliding connecting pipe in sequence through the flow channel 99 corresponding to all even-numbered heat exchange plates; The sliding seal can be made of polytetrafluoroethylene or fluororubber depending on the different working temperature and pressure requirements; the primary sliding connecting pipe 932 and the secondary sliding connecting pipe can be made of stainless steel with mirror polishing treatment to effectively reduce sliding friction resistance. The hot and cold fluids flow in opposite directions within adjacent flow channels 99, forming a full counter-current heat exchange structure. This ensures that the hot and cold fluids maintain the maximum heat transfer temperature difference throughout the entire heat exchange process, and the heat exchange efficiency reaches the theoretical maximum value. The sliding sealing structure between the sliding connecting pipe and the heat exchange plate 93 perfectly realizes the flow channel connection and sealing under the condition of continuously adjustable plate spacing, solving the fundamental problem that the plate spacing of traditional plate heat exchangers is fixed and cannot be dynamically adjusted.

[0031] The preferred millimeter-level stainless steel corrugated connecting piece 98 is made of 316L stainless steel with a wall thickness of 0.1mm. Both ends of the millimeter-level stainless steel corrugated connecting piece 98 are laser welded to the periphery of the flow channels of the two adjacent heat exchange plates 93 to form a completely closed flow channel 99. The millimeter-level stainless steel corrugated connecting piece 98 is provided with 3 continuous corrugations, with a single corrugation height of 2mm and a total expansion and contraction of 6mm.

[0032] In this embodiment, the millimeter-level stainless steel corrugated connecting piece 98 is made of 316L stainless steel. Its two ends are fixedly connected to the periphery of the flow channel of the two adjacent heat exchange plates 93 by laser welding to form a completely closed flow channel 99. The body of the millimeter-level stainless steel corrugated connecting piece 98 is provided with multiple continuous corrugated structures, which allows it to freely expand and contract along the direction of the plate spacing. The millimeter-sized stainless steel corrugated connecting piece 98 can also be made of Hastelloy or titanium alloy depending on the requirements of different corrosion environments; laser welding can be carried out using pulsed laser welding process, which has a small heat-affected zone and will not cause deformation of the heat exchange plate 93 and the millimeter-sized stainless steel corrugated connecting piece 98. The 316L stainless steel material has excellent resistance to chloride ion corrosion, making it ideal for long-term immersion in hot water. The permanent sealing method of laser welding completely eliminates the leakage risk of traditional rubber gaskets, and the service life of the heat exchange core can reach more than 30 years, achieving true lifetime maintenance-free operation. The corrugated structure gives the millimeter-level stainless steel corrugated connecting piece 98 extremely low telescopic resistance, which will not affect the normal adjustment of the double-stroke shape memory alloy spring 97 and the double-output shaft telescopic cylinder 95.

[0033] The preferred flow distribution cavity 5 includes a flow distribution cavity shell 51. The bottom of the flow distribution cavity shell 51 is provided with a water inlet 52, which is connected to the secondary side outlet of the deformable plate heat exchanger 9. A biomimetic leaf vein type flow distributor with a fractal flow channel with progressively branched branches is fixedly installed inside the flow distribution cavity shell 51. Multiple water outlets 53 connected to the biomimetic leaf vein type flow distributor are evenly distributed on the side wall of the flow distribution cavity shell 51. The water outlets 53 are respectively connected to the water supply pipes of each user end.

[0034] In this embodiment, the flow divider 5 includes a flow divider housing 51, with an inlet 52 at the bottom of the flow divider housing 51. The inlet 52 is connected to the secondary outlet of the deformable plate heat exchanger 9 via a connecting pipe. A biomimetic leaf vein flow distributor is fixedly installed inside the flow divider housing 51. The biomimetic leaf vein flow distributor has a fractal flow channel with progressively branching branches inside. Multiple outlets 53 are evenly distributed on the side wall of the flow divider housing 51, and the multiple outlets 53 are respectively connected to the end flow channel of the biomimetic leaf vein flow distributor. The fractal flow channel of the biomimetic leaf vein type flow distributor can be customized according to the number of users and flow requirements; the inner wall of the flow distribution chamber shell 51 can be equipped with a heat insulation layer to reduce the heat loss of secondary hot water during the flow distribution process. By utilizing the self-balancing characteristics of fractal flow channels, the automatic and uniform distribution of secondary network flow is achieved. This eliminates the need for multiple on-site adjustments by professionals, thus solving the hydraulic imbalance problem commonly found in traditional heat exchange stations and ensuring consistent heating temperatures for all users.

[0035] The preferred phase transition temperature of the double-pass shape memory alloy spring 97 is 55±1℃. When the secondary side water supply temperature is higher than 55℃, the double-pass shape memory alloy spring 97 contracts, pulling the moving end plate 92 towards the fixed end plate 91; when the secondary side water supply temperature is lower than 55℃, the double-pass shape memory alloy spring 97 extends, pushing the moving end plate 92 away from the fixed end plate 91, thereby achieving passive foundation temperature regulation.

[0036] In this embodiment, the phase transformation temperature of the two-way shape memory alloy spring 97 is set to the standard water supply temperature for civil heating. When the secondary water supply temperature is higher than the phase transformation temperature, the two-way shape memory alloy spring 97 undergoes a phase transformation from martensite to austenite, generating a contraction force that pulls the moving end plate 92 toward the fixed end plate 91. When the secondary water supply temperature is lower than the phase transformation temperature, the two-way shape memory alloy spring 97 undergoes a phase transformation from austenite to martensite, generating an elongation force that pushes the moving end plate 92 toward a direction away from the fixed end plate 91. The phase change temperature of the two-way shape memory alloy spring 97 can be customized and adjusted according to the heating requirements of different regions; an anti-corrosion coating can be applied to the surface of the two-way shape memory alloy spring 97 to improve its service life in humid environments. By utilizing the shape memory effect of a two-way shape memory alloy spring 97, passive basic temperature regulation can be achieved, which can stabilize the secondary network water supply temperature within the set range without any power supply, sensor and control circuit. Even in the event of a power outage or complete failure of the electrical control system, the system can still maintain basic temperature regulation capability, which greatly improves the operational reliability of the system.

[0037] The preferred flow channel 99 is filled with phase change microcapsules 991, and the ports of the primary side sliding connecting pipe 932 and the secondary side sliding connecting pipe are equipped with perforated plates 992 to block the phase change microcapsules 991 from passing through.

[0038] In this embodiment, the interior of the flow channel 99 is filled with phase change microcapsules 991, and the phase change temperature of the phase change microcapsules 991 matches the set temperature of the secondary side water supply; both the primary side sliding connection pipe 932 and the secondary side sliding connection pipe have a mesh plate 992 fixedly installed at their ends, and the mesh diameter of the mesh plate 992 is smaller than the diameter of the phase change microcapsules 991. Phase change microcapsules 991 can use paraffin-based phase change materials as the core material and melamine-formaldehyde resin as the wall material; the perforated plate 992 can be made of stainless steel and fixed to the port of the sliding connecting tube by welding. By utilizing the latent heat characteristics of phase change materials, the thermal energy storage capacity of the system is significantly increased without increasing the equipment volume. It can effectively suppress the temperature fluctuations of the secondary network water supply caused by the temperature fluctuations of the primary network and the changes in heat load, further improving the stability and comfort of heating. The design of the perforated plate 992 effectively prevents the phase change microcapsules 991 from flowing out of the flow channel 99 with the fluid, ensuring the long-term stability of the energy storage effect.

[0039] The preferred micro differential pressure power generation module 7 includes an axial flow turbine and a permanent magnet synchronous generator. The impeller of the axial flow turbine is made of 316L stainless steel. The permanent magnet synchronous generator is coaxially connected to the axial flow turbine. The micro differential pressure power generation module 7 is connected in series on the primary side inlet pipe of the deformable plate heat exchanger 9, and generates electricity by utilizing the pressure difference between the primary side pipe network and the deformable plate heat exchanger 9.

[0040] In this implementation case, the micro differential pressure power generation module 7 includes an axial flow turbine and a permanent magnet synchronous generator. The impeller of the axial flow turbine is made of 316L stainless steel. The main shaft of the permanent magnet synchronous generator is coaxially and fixedly connected to the main shaft of the axial flow turbine. The micro differential pressure power generation module 7 is connected in series on the primary side inlet pipe of the deformable plate heat exchanger 9. The turbine is driven to rotate and generate electricity by utilizing the pressure difference between the primary side pipe network and the deformable plate heat exchanger 9. The impeller of an axial-flow turbine can be customized according to different flow rate and pressure difference parameters; the permanent magnet synchronous generator can use high-efficiency rare earth permanent magnet materials to improve power generation efficiency. The system utilizes the pressure energy that was originally wasted by the pressure reducing valve in the primary side pipeline to generate electricity, converting the pressure energy into useful electrical energy and improving the system's energy utilization rate; the 316L stainless steel impeller has excellent corrosion resistance and wear resistance, and can operate reliably for a long time in hot water conditions; the coaxial connection structure has no gearbox or other transmission components, making it simple in structure, highly reliable, and maintenance-free.

[0041] The preferred power source 8 is a supercapacitor energy storage module, which is electrically connected to the micro differential pressure power generation module 7 to store the electrical energy generated by the micro differential pressure power generation module 7. The supercapacitor energy storage module is also electrically connected to the dual-output shaft telescopic cylinder 95 and the control chamber 6 to provide them with working power.

[0042] In this implementation case, the power supply 8 adopts a supercapacitor energy storage module. The input end of the supercapacitor energy storage module is electrically connected to the output end of the micro differential pressure power generation module 7 to store the electrical energy generated by the micro differential pressure power generation module 7. The output end of the supercapacitor energy storage module is electrically connected to the dual-output shaft telescopic cylinder 95 and the edge control unit in the control cavity 6 respectively to provide them with a stable working power supply. Supercapacitor energy storage modules can be composed of multiple supercapacitor cells connected in series and parallel, and the capacity can be adjusted according to the power demand of the system; a voltage regulator and rectifier circuit can be set at the input terminal of the supercapacitor energy storage module to ensure the stability of the output voltage; The supercapacitor energy storage module has advantages such as multiple charge and discharge cycles, long service life, maintenance-free operation, and resistance to high and low temperatures, and can adapt to the harsh working environment of the heat exchange station. Combined with the micro differential pressure power generation module 7, the entire system achieves complete energy self-sufficiency without the need for an external 220V power supply, and completely solves the problem of traditional intelligent heat exchange stations being paralyzed by power outages.

[0043] The preferred housing 1 is equipped with a conduit 10 that connects the power generation chamber 3 and the control chamber 6.

[0044] In this embodiment, a conduit 10 is fixedly installed inside the housing 1. One end of the conduit 10 extends into the power generation chamber 3, and the other end extends into the control chamber 6. The system's connecting cable passes through the inside of the conduit 10 and connects the miniature differential pressure power generation module 7 and the power supply 8 in the power generation chamber 3 with the edge control unit in the control chamber 6. The conduit 10 can be made of galvanized steel pipe or PVC pipe, depending on the different usage environments; sealing joints can be installed at both ends of the conduit 10 to prevent dust and moisture from entering the conduit. The dedicated conduit 10 effectively protects the cable from fluid corrosion and mechanical damage, extending the cable's service life; at the same time, it makes the internal wiring of the equipment neater and more standardized, facilitating later maintenance and repair.

[0045] The preferred enclosure 1 has a clearance opening 11 for pipeline routing, and an antenna 12 connected to the control cavity 6 is installed on the top of the enclosure 1.

[0046] In this embodiment, multiple clearance openings 11 are provided on the side wall of the enclosure 1. The clearance openings 11 are used for the entry and exit of primary and secondary side pipelines. An antenna 12 is fixedly installed on the top of the enclosure 1. The antenna 12 is electrically connected to the edge control unit in the control cavity 6. Rubber protective rings can be installed on the edge of the clearance opening 11 to prevent the pipe from being scratched by the sharp edge of the box 1 during installation; the antenna 12 can adopt a foldable structure to facilitate the transportation and installation of the equipment. The clearance opening 11 on the side wall facilitates on-site installation of the equipment and connection of pipelines, improving construction efficiency; the antenna 12 installed on the top ensures the signal strength of the LoRa remote communication module, realizing real-time remote transmission and monitoring of heat exchange station operation data, which facilitates unified scheduling and management by the heating company.

[0047] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An intelligent decision-making machine for a heat exchange station with intelligent control, comprising a housing (1), characterized in that: The interior of the box (1) is divided into four chambers from bottom to top according to their functions: power generation chamber (3), heat exchange chamber (4), flow distribution chamber (5) and control chamber (6), and these chambers are separated. The power generation chamber (3) is used to supply power to the electrical components of the machine body; the flow distribution chamber (5) is in fluid communication with the heat exchange chamber (4) to distribute the heat-exchanged fluid to each user end; the control chamber (6) can receive feedback signals and regulate the overall machine operation status; The power generation chamber (3) is equipped with a micro differential pressure power generation module (7) and a power supply (8). The micro differential pressure power generation module (7) generates electricity by using the fluid that enters the heat exchange chamber (4) for heat exchange as power. A deformable plate heat exchanger (9) is installed inside the heat exchange chamber (4). The deformable plate heat exchanger (9) includes a fixed end plate (91), a movable end plate (92), and multiple heat exchange plates (93). All the heat exchange plates (93) are stacked between the fixed end plate (91) and the movable end plate (92). Multiple sets of guide rods (94) are installed between the fixed end plate (91) and the movable end plate (92). A double-outlet telescopic cylinder (95) is installed on the upper set of guide rods (94). The two working ends of the double-outlet telescopic cylinder (95) are respectively connected to the fixed end plate (91) and the movable end plate (92). Pull rods (96) are connected to the front and rear sides of the fixed end plate (91) and the movable end plate (92). A double-stroke shape memory alloy spring (97) is connected between the pull rod (96) on the fixed end plate (91) and the pull rod (96) on the movable end plate (92). The adjacent heat exchange plates (93) are connected in an S-shape with millimeter-sized stainless steel corrugated connecting plates (98). The millimeter-sized stainless steel corrugated connecting plates (98) form a tortuous flow channel (99) between the adjacent heat exchange plates (93). The flow paths of the flow channels (99) on both sides of a heat exchange plate (93) are opposite. The flow in the flow channels (99) on both sides of a heat exchange plate (93) must be the heat exchange fluid and the fluid being heat exchanged. The millimeter-sized stainless steel corrugated connecting plate can expand and contract with the change in the spacing between adjacent heat exchange plates, thereby adjusting the fluid flow rate in the flow channel.

2. The intelligent decision-making machine for an intelligent control heat exchange station according to claim 1, characterized in that: All the heat exchange plates (93) are divided into odd-numbered heat exchange plates and even-numbered heat exchange plates and are stacked alternately. Each heat exchange plate (93) is provided with a fluid through hole (931). The fluid through holes on adjacent odd-numbered heat exchange plates are connected by a primary side sliding connecting pipe (932), which passes through the corresponding fluid through hole (931) of the even-numbered heat exchange plate located between two odd-numbered heat exchange plates. The fluid through holes on adjacent even-numbered heat exchange plates are connected by a secondary sliding connecting pipe, which passes through the corresponding fluid through hole of the odd-numbered heat exchange plate located between two even-numbered heat exchange plates. The primary sliding connecting pipe (932) and the secondary sliding connecting pipe have the same structure; Sliding seals are provided between the primary sliding connecting pipe (932) and the secondary sliding connecting pipe and the heat exchange plate (93) through which they pass, so that the primary heat exchange fluid flows only in the flow channels (99) corresponding to all odd-numbered heat exchange plates, and the secondary heat exchange fluid flows only in the flow channels (99) corresponding to all even-numbered heat exchange plates, forming a full-process staggered countercurrent heat exchange structure.

3. The intelligent decision-making machine for an intelligent control heat exchange station according to claim 1, characterized in that: The two ends of the millimeter-level stainless steel corrugated connecting piece (98) are laser welded to the periphery of the flow channel of the two adjacent heat exchange plates (93) to form the completely closed flow channel (99). The millimeter-level stainless steel corrugated connecting piece (98) is provided with 3 continuous corrugations, with a single wave height of 2mm and a total expansion and contraction of 6mm.

4. The intelligent decision-making machine for an intelligent control heat exchange station according to claim 1, characterized in that: The flow divider (5) includes a flow divider housing (51), and an inlet (52) is provided at the bottom of the flow divider housing (51). The inlet (52) is connected to the secondary outlet of the deformable plate heat exchanger (9). A biomimetic leaf vein flow distributor with a fractal flow channel with progressively branched branches is fixedly installed inside the flow divider housing (51). Multiple outlets (53) connected to the biomimetic leaf vein flow distributor are evenly distributed on the side wall of the flow divider housing (51). The outlets (53) are connected to the water supply pipes of each user end.

5. The intelligent decision-making machine for an intelligent control heat exchange station according to claim 1, characterized in that: The phase transition temperature of the two-way shape memory alloy spring (97) is 55±1℃; the two-way shape memory alloy spring (97) can generate expansion and contraction deformation in response to changes in the secondary side water supply temperature, thereby driving the moving end plate (92) to move relative to the fixed end plate (91) and realizing passive temperature self-regulation.

6. The intelligent decision-making machine for an intelligent control heat exchange station according to claim 2, characterized in that: The flow channel (99) is filled with phase change microcapsules (991), and the ports of the primary sliding connecting pipe (932) and the secondary sliding connecting pipe are equipped with perforated plates (992) for blocking the phase change microcapsules (991) from passing through.

7. The intelligent decision-making machine for an intelligent control heat exchange station according to claim 1, characterized in that: The micro differential pressure power generation module (7) includes an axial-flow turbine and a permanent magnet synchronous generator. The permanent magnet synchronous generator is coaxially connected to the axial-flow turbine. The micro differential pressure power generation module (7) is connected in series in the primary side inlet pipe of the deformable plate heat exchanger (9). The micro differential pressure power generation module (7) can generate electricity using the pressure difference between the primary side pipe network and the deformable plate heat exchanger (9).

8. The intelligent decision-making machine for an intelligent control heat exchange station according to claim 1, characterized in that: The power source (8) is a supercapacitor energy storage module. The supercapacitor energy storage module is electrically connected to the micro differential pressure power generation module (7) and is used to store the electrical energy generated by the micro differential pressure power generation module (7). The supercapacitor energy storage module is also electrically connected to the dual-output shaft telescopic cylinder (95) and the control cavity (6).

9. The intelligent decision-making machine for an intelligent control heat exchange station according to claim 1, characterized in that: The housing (1) is equipped with a conduit (10) that connects the power generation chamber (3) and the control chamber (6).

10. The intelligent decision-making machine for an intelligent control heat exchange station according to claim 1, characterized in that: The enclosure (1) has a passageway (11) for pipeline routing, and an antenna (12) connected to the control cavity (6) is installed on the top of the enclosure (1).

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