Normal-pressure heat storage water tank with self-operated cold and hot partition plate and working method of normal-pressure heat storage water tank

Abstract

The invention discloses a normal-pressure heat storage water tank with a self-operated cold and hot partition plate and a working method of the normal-pressure heat storage water tank, and belongs to the technical field of energy storage. The tank communicates with the high-temperature water pipe and the low-temperature water pipe; the partition plate is arranged in the tank body, an adjustable air bin is inserted in the middle of the partition plate, a through hole is formed in a bottom plate of the adjustable air bin, a control mechanism is arranged in the adjustable air bin and used for controlling lifting of the adjusting plate, the outer wall of the adjusting plate is tightly attached to the inner wall of the adjustable air bin in a sealed mode, and a high-temperature water partition plate temperature sensor and a low-temperature water partition plate temperature sensor are arranged on the partition plate; a high-temperature water upper layer temperature sensor and a low-temperature water lower layer temperature sensor are mounted on the inner wall of the tank body; and the temperature sensors are in signal transmission connection with the control mechanism. The heat energy storage efficiency is improved, the operation energy consumption of the system is reduced, clear layering of cold and hot water areas in the heat storage and release process is guaranteed, the requirement for improvement of an original water tank structure is small, compatibility is high, and the system is suitable for various scenes such as combined heat and power generation, renewable energy source heat supply and industrial waste heat recovery.

Description

TECHNICAL FIELD

[0001] The present application relates to a normal pressure heat storage water tank with a self-powered cold and hot partition plate and a working method thereof, and belongs to the technical field of energy storage. BACKGROUND

[0002] In the field of energy storage technology, normal pressure heat storage water tanks, as key equipment for storing and releasing heat energy, are widely used in combined heat and power, renewable energy heating and industrial waste heat recovery systems. The core function is to store excess heat energy and release it when needed, achieving dynamic supply and demand balance, heat-electricity decoupling and energy utilization efficiency improvement, which plays an important role in improving renewable energy consumption capacity and reducing carbon emissions.

[0003] In the prior art, natural stratification type heat storage water tanks are widely used due to their simple structure and low operating cost. This type of equipment realizes stratified storage of heat energy through hot water layer, cold water layer and inclined temperature layer between them. The thickness and stability of the inclined temperature layer directly affect the heat storage efficiency. Ideally, the inclined temperature layer should have a very thin thickness and high stability to minimize heat mixing and loss of high and low temperature water. However, in actual application, natural stratification type heat storage water tanks have the following technical defects:

[0004] 1. Insufficient stability of inclined temperature layer: the existing equipment lacks effective stratification control mechanism, the thickness of the inclined temperature layer is large and the dynamic stability is poor, which leads to significant heat mixing of high and low temperature water in the transition area, resulting in reduced heat storage efficiency;

[0005] 2. Low thermal efficiency: direct mixing of cold and hot water is common, and the inclined temperature layer is difficult to maintain in an ideal thin state, which not only increases system operating energy consumption, but also increases overall cost due to insufficient energy utilization efficiency;

[0006] 3. Limited structural compatibility: traditional partition devices rely on external power systems or complex mechanical structures to maintain stratification, such as using pumping devices or electric adjustment components to control the position of the partition plate. Such designs have high structural complexity, require additional installation of power components and sensors, have high maintenance costs, and the failure rate of mechanical parts increases with the use cycle, which limits compatibility due to the need for large-scale modification of the original water tank structure. SUMMARY

[0007] To solve the problems in the background art, the present application provides a normal pressure heat storage water tank with a self-powered cold and hot partition plate and a working method thereof.

[0008] To achieve the above object, the present application adopts the following technical scheme: a normal-pressure heat storage water tank with self-powered cold and hot partition plates, comprising a tank body, an adjustable air chamber, an adjusting plate, a partition plate, a high-temperature water pipe, a low-temperature water pipe and a control mechanism; the inside of the tank body is provided with the partition plate, the upper end of the tank body is in communication with the high-temperature water pipe, and the lower end of the tank body is in communication with the low-temperature water pipe; the water outlet end of the high-temperature water pipe is provided with a water distributor; the partition plate is horizontally and coaxially provided with a gap in the inside of the tank body, the middle part of the partition plate is fixedly inserted with the adjustable air chamber, the control mechanism is installed in the adjustable air chamber, the control mechanism is used for controlling the lifting of the horizontally arranged adjusting plate, the adjusting plate and the adjustable air chamber are slidably connected through a vertically arranged sliding groove, the outer wall of the adjusting plate is tightly and closely combined with the inner wall of the adjustable air chamber, the bottom plate of the adjustable air chamber is provided with a through hole in communication with the inside of the tank body; the upper surface of the partition plate is installed with a high-temperature water partition plate temperature sensor; the lower surface of the partition plate is installed with a low-temperature water partition plate temperature sensor; the upper end of the inner wall of the tank body is installed with a high-temperature water upper layer temperature sensor; the lower end of the inner wall of the tank body is installed with a low-temperature water lower layer temperature sensor; the high-temperature water partition plate temperature sensor (13), the low-temperature water partition plate temperature sensor (15), the high-temperature water upper layer temperature sensor and the low-temperature water lower layer temperature sensor are in signal transmission connection with the control mechanism.

[0009] Further, the control mechanism comprises a motor, a threaded rod, a transmission chain, a threaded sleeve, a driving gear, a driven gear and a control system; the motor is vertically fixed to the inner wall of the adjustable air chamber, the output shaft of the motor is coaxially fixedly connected with the driving gear, the driving gear is in transmission connection with the driven gear through the transmission chain, the driven gear is coaxially fixedly sleeved on the outside of the vertically arranged threaded rod, the upper end of the threaded rod is rotatably connected with the top plate of the adjustable air chamber, the outside of the lower end of the threaded rod is threadedly screwed with the threaded sleeve, and the lower end of the threaded sleeve is coaxially fixedly connected with the adjusting plate; the motor, the high-temperature water partition plate temperature sensor, the low-temperature water partition plate temperature sensor, the high-temperature water upper layer temperature sensor and the low-temperature water lower layer temperature sensor are in signal transmission connection with the control system.

[0010] Further, the side wall of the partition plate is provided with a plurality of grooves, each of the grooves is fixedly provided with an anti-rolling frame, the outer wall of each of the anti-rolling frames is spherically hinged with at least two rolling balls, and each of the rolling balls is in rolling close contact with the inner wall of the adjustable air chamber.

[0011] The working method of the normal-pressure heat storage water tank with self-powered cold and hot partition plates, the method comprises the following steps:

[0012] S1: collecting the preset temperature data of the high-temperature water and the low-temperature water to be stored in the heat storage water tank, and inputting the temperature data into the control system;

[0013] S2: The control system calculates the target average density required by the partition plate according to the input temperature data;

[0014] S3: The control system starts the motor to drive the threaded rod to rotate, and then drives the threaded sleeve to rotate, thereby adjusting the up-down position of the adjusting plate, and completing the initial density adjustment;

[0015] S4: Heat storage process:

[0016] S401: Open the control valve of the low-temperature water pipe, and fill the low-temperature water into the tank through the low-temperature water pipe;

[0017] S402: Because the average density of the partition plate is less than the density of the low-temperature water, the partition plate naturally floats on the upper part of the low-temperature water surface and gradually moves upward with the rising of the low-temperature water level;

[0018] S403: Continue to fill the low-temperature water until the low-temperature water fills the tank, and the partition plate is stable at the top of the tank, completing the low-temperature water filling before heat storage;

[0019] S404: Open the control valve of the high-temperature water pipe, and hot water enters the upper space of the partition plate in the tank through the high-temperature water pipe;

[0020] S405: Because the density of the hot water is less than the average density of the partition plate, under the joint action of the density difference and the water flow generated by the inflow of the hot water, the cold-hot partition plate starts to move downward; In this process, the anti-rolling frame cooperates with the ball to limit the deviation of the partition plate, and ensures that it always moves horizontally;

[0021] S406: The high-temperature water partition plate temperature sensor and the low-temperature water partition plate temperature sensor monitor the temperature on both sides of the partition plate in real time, and transmit the temperature signal to the control system;

[0022] S407: The control system analyzes the temperature difference of the high-temperature water partition plate temperature sensor and the low-temperature water partition plate temperature sensor in real time, if the temperature difference decreases, it means that the partition plate moves too fast or too slow, and is not in the ideal position between the cold and hot water; At this time, the control system drives the adjusting plate to adjust the position, changes the average density of the partition plate, and then adjusts its moving speed and position, until the temperature difference returns to the normal range;

[0023] S408: Continue to input hot water into the tank until the preset heat storage capacity is reached, close the control valve of the high-temperature water pipe, and complete the heat storage process; During the process, the temperature data monitored by the high-temperature water upper layer temperature sensor, the low-temperature water lower layer temperature sensor, the high-temperature water partition plate temperature sensor and the low-temperature water partition plate temperature sensor can be used to calculate the real-time heat storage capacity;

[0024] S5: Heat release process:

[0025] S501: Open the control valve of the low-temperature water pipe, supplement low-temperature water into the tank through the low-temperature water pipe, and push the high-temperature water to move towards the outlet direction;

[0026] S502: The partition plate moves correspondingly with the change of the cold-hot water interface, and the anti-rolling frame and the ball continue to play a role, ensuring the horizontal movement of the partition plate;

[0027] S503: The high-temperature water partition plate temperature sensor and the low-temperature water partition plate temperature sensor continuously monitor the temperature and transmit signals, and the control system drives the adjusting plate to adjust the position according to the temperature difference change, maintains the average density of the partition plate, and ensures that it is always between cold and hot water, reducing the mixing of high and low temperature water;

[0028] S504: When the high-temperature water in the heat storage water tank is released to a preset amount, the control valve of the corresponding pipeline is closed, and the heat release process is completed.

[0029] Compared with the prior art, the beneficial effects of the present application are:

[0030] The present application utilizes the physical separation of the partition plate to separate the high-temperature water and low-temperature water area, effectively inhibits the direct mixing of cold and hot water, reduces the heat mixing loss of the thermocline, significantly improves the heat storage efficiency and reduces the system operation energy consumption; through the temperature sensor real-time monitoring and the control system dynamic adjustment of the partition plate density, the partition plate always self-adaptively keeps in the ideal position of the cold-hot water interface, enhances the stability of the thermocline thickness, and guarantees the clear stratification of the cold-hot water area during the heat storage and release process; the self-adaptive adjusting structure without external power driving is used in combination with the anti-rolling frame-ball anti-deviation design, which simplifies the equipment structure, reduces the maintenance cost, ensures the horizontal and stable movement of the partition plate, avoids the tilt and jam fault, and has small modification demand for the original water tank structure, strong compatibility, and is suitable for multiple scenes such as combined heat and power generation, renewable energy heating and industrial waste heat recovery, etc., and has significant technical and economic advantages. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structural schematic diagram of the present application;

[0032] Figure 2 is a connection relationship diagram of the partition plate, the air storage chamber and the anti-rolling frame;

[0033] Figure 3 is a sectional view of Figure 2 ;

[0034] Figure 4 is a structural schematic diagram of the partition plate;

[0035] Figure 5 is a structural schematic diagram of the control mechanism. DETAILED DESCRIPTION

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] An atmospheric pressure hot water storage tank with a self-regulating hot and cold water partition plate includes a tank body 1, a partition plate 3, an adjustable air chamber 2, an adjusting plate 6, a high-temperature water pipe 10, a low-temperature water pipe 11, and a control mechanism. The partition plate 3 is provided inside the tank body 1. The upper end of the tank body 1 is connected to the high-temperature water pipe 10, and the lower end of the tank body 1 is connected to the low-temperature water pipe 11. A water distributor 9 is provided at the outlet end of the high-temperature water pipe 10. The partition plate 3 is horizontally and coaxially positioned inside the tank body 1, and the diameter of the partition plate 3 is 90%-95% of the inner diameter of the hot water storage tank. An adjustable air chamber 2 is fixedly inserted into the middle of the partition plate 3. A control mechanism is installed inside the adjustable air chamber 2. The control mechanism is used to control the raising and lowering of the horizontally set adjustment plate 6. The adjustment plate 6 and the adjustable air chamber 2 are slidably connected through a vertically set sliding groove. The outer wall of the adjustment plate 6 is tightly sealed to the inner wall of the adjustable air chamber 2. The bottom plate of the adjustable air chamber 2 is provided with a through hole 19 that communicates with the interior of the tank body 1. A high-temperature water partition plate temperature sensor 13 is installed on the upper surface of the partition plate 3. A low-temperature water partition plate temperature sensor 15 is installed on the lower surface of the partition plate 3. A high-temperature water upper layer temperature sensor 12 is installed at the upper end of the inner wall of the tank body 1. A low-temperature water lower layer temperature sensor 14 is installed at the lower end of the inner wall of the tank body 1. The high-temperature water partition plate temperature sensor 13, the low-temperature water partition plate temperature sensor 15, the high-temperature water upper layer temperature sensor 12, and the low-temperature water lower layer temperature sensor 14 are all connected to the control mechanism for signal transmission.

[0038] Furthermore, the control mechanism includes a motor 4, a threaded rod 5, a transmission chain 16, a threaded sleeve 17, a driving gear, a driven gear, and a control system. The motor 4 is vertically fixed to the inner wall of the adjustable air chamber 2 via a motor mounting base and a sealing cover. The output shaft of the motor 4 is coaxially fixedly connected to the driving gear (not shown in the figure). The driving gear is driven by the driven gear (not shown in the figure) via the transmission chain 16. The driven gear is coaxially fixedly fitted onto the outer side of the vertically arranged threaded rod 5. The upper end of the threaded rod 5 is rotatably connected to the top plate of the adjustable air chamber 2 via a bearing. The lower end of the threaded rod 5 is threadedly connected to the outer side of the threaded sleeve 17. The lower end of the threaded sleeve 17 is coaxially fixedly connected to the adjusting plate 6. The motor 4, the high-temperature water partition plate temperature sensor 13, the low-temperature water partition plate temperature sensor 15, the high-temperature water upper layer temperature sensor 12, and the low-temperature water lower layer temperature sensor 14 are all connected to the control system for signal transmission.

[0039] Furthermore, the sidewall of the partition plate 3 is provided with a plurality of evenly distributed slots 18 along its circumference. Each slot 18 is fixed with an anti-roll frame 7. The outer wall of each anti-roll frame 7 is ball-jointed with at least two balls 8 to ensure that the balls 8 are firmly installed and can roll flexibly. Each ball 8 rolls and fits against the inner wall of the adjustable air chamber 2, ensuring that the partition plate 3 has a self-positioning function and posture stability.

[0040] The present invention discloses a method for operating an atmospheric pressure hot water storage tank with a self-regulating hot and cold partition plate, the method comprising the following steps:

[0041] S1: Collect the preset temperature data of the high-temperature water and low-temperature water that will be stored in the hot water storage tank, and input the temperature data into the control system;

[0042] S2: The control system calculates the target average density required for partition plate 3 based on the input temperature data, which must be between the preset densities of high-temperature water and low-temperature water;

[0043] S3: The control system starts the motor 4, which drives the threaded rod 5 to rotate through the transmission chain 16, and then drives the threaded sleeve 17 to rotate, thereby adjusting the up and down position of the adjusting plate 6, changing the ratio of the gas volume in the upper part of the adjustable air chamber 2 to the water volume in the lower part, and then adjusting the overall average density of the hot and cold partition plate until it reaches the target average density, thus completing the initial density adjustment.

[0044] S4: Heat storage process:

[0045] S401: Open the control valve of the cryogenic water pipe 11 to fill the tank 1 with cryogenic water through the cryogenic water pipe 11;

[0046] S402: During this process, since the average density of partition plate 3 is less than that of low temperature water, partition plate 3 naturally floats on the upper part of the low temperature water surface and gradually moves upward as the low temperature water level rises.

[0047] S403: Continuously fill the tank with low-temperature water until the tank 1 is full and the partition plate 3 is stable on the top of the tank 1, completing the low-temperature water filling before heat storage. This state is the initial state after the heat storage tank has finished releasing heat.

[0048] S404: Open the control valve of the high-temperature water pipe 10, and hot water enters the upper space of the partition plate 3 inside the tank 1 through the high-temperature water pipe 10.

[0049] S405: Since the density of hot water is less than the average density of partition plate 3, the hot and cold partition plates begin to move downwards under the combined action of the density difference and the water flow generated by the inflow of hot water; during this process, the anti-roll cage 7 and the ball bearings 8 cooperate with each other to limit the offset of partition plate 3 and ensure that it always maintains horizontal movement.

[0050] S406: The high-temperature water partition plate temperature sensor 13 and the low-temperature water partition plate temperature sensor 15 monitor the temperature on the upper and lower sides of the partition plate 3 in real time and transmit the temperature signal to the control system.

[0051] S407: The control system analyzes the temperature difference between the high-temperature water partition plate temperature sensor 13 and the low-temperature water partition plate temperature sensor 15 in real time. If the temperature difference decreases, it indicates that the partition plate 3 is moving too fast or too slow and is not in the ideal position between hot and cold water. At this time, the control system drives the adjustment plate 6 to adjust its position, change the average density of the partition plate 3, and then adjust its moving speed and position until the temperature difference returns to the normal range, ensuring that the partition plate 3 is always between hot and cold water, effectively separating the high and low temperature water, so that the high and low temperature water in the hot water storage tank is separated by the hot and cold partition plate, reducing the direct mixing between high and low temperature water, thereby improving the thickness and stability of the temperature gradient layer.

[0052] S408: Continuously input hot water into tank 1 until the preset heat storage capacity is reached, then close the control valve of high temperature water pipe 10 to complete the heat storage process; during this period, the real-time heat storage capacity can be calculated by monitoring the temperature data of high temperature water upper layer temperature sensor 12, low temperature water lower layer temperature sensor 14, high temperature water partition plate temperature sensor 13 and low temperature water partition plate temperature sensor 15, so as to avoid affecting the normal operation of the water tank.

[0053] S5: Exothermic process:

[0054] S501: Open the control valve of the low-temperature water pipe 11 to replenish low-temperature water into the tank 1 through the low-temperature water pipe 11 and push the high-temperature water towards the outlet.

[0055] S502: During this process, the partition plate 3 moves accordingly with the change of the hot and cold water interface, and the anti-roll cage 7 and the ball bearings 8 continue to play their role to ensure that the partition plate 3 moves horizontally.

[0056] S503: The high-temperature water partition plate temperature sensor 13 and the low-temperature water partition plate temperature sensor 15 continuously monitor the temperature and transmit signals. The control system drives the adjustment plate 6 to adjust its position according to the temperature difference, maintains the average density of the partition plate 3, and ensures that it is always between hot and cold water, thereby reducing the mixing of high and low temperature water.

[0057] S504: When the high-temperature water in the hot water storage tank is released to the preset amount, the control valve of the corresponding pipeline is closed to complete the heat release process.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A normal pressure hot water storage tank with a self-regulating hot and cold water partition, comprising a tank body (1), a partition plate (3), a high-temperature water pipe (10), and a low-temperature water pipe (11); the tank body (1) is provided with a partition plate (3), the upper end of the tank body (1) is connected to the high-temperature water pipe (10), and the lower end of the tank body (1) is connected to the low-temperature water pipe (11); the outlet end of the high-temperature water pipe (10) is provided with a water distributor (9); characterized in that: The hot water storage tank also includes an adjustable air chamber (2), an adjusting plate (6), and a control mechanism; the partition plate (3) is horizontally coaxially spaced inside the tank body (1), and the adjustable air chamber (2) is fixedly inserted into the middle of the partition plate (3). The adjustable air chamber (2) is equipped with a control mechanism, which is used to control the lifting and lowering of the horizontally set adjusting plate (6). The adjusting plate (6) and the adjustable air chamber (2) are slidably connected by a vertically set sliding groove. The outer wall of the adjusting plate (6) is tightly sealed to the inner wall of the adjustable air chamber (2). The bottom plate of the adjustable air chamber (2) is provided with a connection to the tank body (1). 1) The internal connection is provided with a through hole (19); a high temperature water partition plate temperature sensor (13) is installed on the upper surface of the partition plate (3); a low temperature water partition plate temperature sensor (15) is installed on the lower surface of the partition plate (3); a high temperature water upper layer temperature sensor (12) is installed on the upper end of the inner wall of the tank (1); a low temperature water lower layer temperature sensor (14) is installed on the lower end of the inner wall of the tank (1); the high temperature water partition plate temperature sensor (13), the low temperature water partition plate temperature sensor (15), the high temperature water upper layer temperature sensor (12) and the low temperature water lower layer temperature sensor (14) are all connected to the control mechanism for signal transmission.

2. A normal pressure hot water storage tank with a self-regulating hot and cold partition plate according to claim 1, characterized in that: The control mechanism includes a motor (4), a threaded rod (5), a transmission chain (16), a threaded sleeve (17), a drive gear, a driven gear, and a control system. The motor (4) is vertically fixed to the inner wall of the adjustable air chamber (2). The output shaft of the motor (4) is coaxially fixedly connected to the drive gear. The drive gear is connected to the driven gear through the transmission chain (16). The driven gear is coaxially fixedly fitted on the outside of the vertically arranged threaded rod (5). The upper end of the threaded rod (5) is rotatably connected to the top plate of the adjustable air chamber (2). The threaded sleeve (17) is threadedly screwed onto the outer side of the lower end of the threaded rod (5). The lower end of the threaded sleeve (17) is coaxially fixedly connected to the adjustment plate (6). The motor (4), the high-temperature water partition plate temperature sensor (13), the low-temperature water partition plate temperature sensor (15), the high-temperature water upper layer temperature sensor (12), and the low-temperature water lower layer temperature sensor (14) are all connected to the control system for signal transmission.

3. A normal pressure hot water storage tank with a self-regulating hot and cold partition plate according to claim 1, characterized in that: The side wall of the partition plate (3) is provided with a plurality of slots (18), and each slot (18) is fixed with a roll cage (7). Each roll cage (7) has at least two balls (8) on its outer wall, and each ball (8) rolls against the inner wall of the adjustable air chamber (2).

4. A method for operating an atmospheric pressure hot water storage tank with a self-regulating hot and cold partition plate according to any one of claims 1-3, characterized in that: The method includes the following steps: S1: Collect the preset temperature data of the high-temperature water and low-temperature water that will be stored in the hot water storage tank, and input the temperature data into the control system; S2: The control system calculates the target average density required for the partition plate (3) based on the input temperature data; S3: The control system starts the motor (4), drives the threaded rod (5) to rotate through the transmission chain (16), and then drives the threaded sleeve (17) to rotate, and then adjusts the up and down position of the adjusting plate (6) to complete the initial density adjustment; S4: Heat storage process: S401: Open the control valve of the low-temperature water pipe (11) and fill the tank (1) with low-temperature water through the low-temperature water pipe (11); S402: Since the average density of the partition plate (3) is less than that of the low temperature water, the partition plate (3) naturally floats on the upper part of the low temperature water surface and gradually moves upward as the low temperature water level rises. S403: Continuously fill the tank with low-temperature water until the tank (1) is full and the partition plate (3) is stable on the top of the tank (1), thus completing the low-temperature water filling before heat storage; S404: Open the control valve of the high temperature water pipe (10), and hot water enters the upper space of the partition plate (3) inside the tank (1) through the high temperature water pipe (10); S405: Since the density of hot water is less than the average density of partition plate (3), the hot and cold partition plate begins to move downward under the combined action of density difference and water flow generated by hot water inflow; during this process, the anti-roll frame (7) and the ball (8) cooperate with each other to limit the offset of partition plate (3) and ensure that it always maintains horizontal movement. S406: The high-temperature water partition plate temperature sensor (13) and the low-temperature water partition plate temperature sensor (15) monitor the temperature on the upper and lower sides of the partition plate (3) in real time and transmit the temperature signal to the control system. S407: The control system analyzes the temperature difference between the high-temperature water partition plate temperature sensor (13) and the low-temperature water partition plate temperature sensor (15) in real time. If the temperature difference decreases, it indicates that the partition plate (3) is moving too fast or too slow and is not in the ideal position between hot and cold water. At this time, the control system drives the adjustment plate (6) to adjust the position, change the average density of the partition plate (3), and then adjust its moving speed and position until the temperature difference returns to the normal range. S408: Continuously input hot water into the tank (1) until the preset heat storage capacity is reached, close the control valve of the high temperature water pipe (10) to complete the heat storage process; during this period, the real-time heat storage capacity can be calculated by monitoring the temperature data of the high temperature water upper layer temperature sensor (12), the low temperature water lower layer temperature sensor (14), the high temperature water partition plate temperature sensor (13) and the low temperature water partition plate temperature sensor (15). S5: Exothermic process: S501: Open the control valve of the low temperature water pipe (11) to replenish low temperature water into the tank (1) through the low temperature water pipe (11) and push the high temperature water to move towards the outlet. S502: The partition plate (3) moves accordingly with the change of the hot and cold water interface, and the anti-roll cage (7) and the ball bearings (8) continue to play their role to ensure that the partition plate (3) moves horizontally; S503: The high temperature water partition plate temperature sensor (13) and the low temperature water partition plate temperature sensor (15) continuously monitor the temperature and transmit signals. The control system drives the adjustment plate (6) to adjust the position according to the temperature difference, maintains the average density of the partition plate (3), and ensures that it is always between hot and cold water, reducing the mixing of high and low temperature water. S504: When the high-temperature water in the hot water storage tank is released to the preset amount, the control valve of the corresponding pipeline is closed to complete the heat release process.

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