Thermocline storage tank structure with branch inclined water distributor

Abstract

The application relates to a thermocline storage tank structure with a branch inclined type water distributor. The technical scheme is that the upper part of the thermocline storage tank body is provided with an upper water distributor, and the lower part is provided with a lower water distributor, wherein the upper water distributor and the lower water distributor adopt a branch inclined type variable-aperture water distributor; the upper end of a distribution buffer chamber of the branch inclined type variable-aperture water distributor is connected with the inner end of a high-temperature water inlet and outlet pipe; the outer side of the distribution buffer chamber is connected with multiple groups of distributor branch pipe main pipes; each group of the distributor branch pipe main pipes is downwardly inclined and forms a certain angle with the horizontal plane; and multiple groups of distributor branch pipe auxiliary branch pipes are distributed on each group of the distributor branch pipe main pipes; multiple water distributor outlet pipes are uniformly distributed below the distributor branch pipe auxiliary branch pipes. The application has the beneficial effects that the application can reduce the flow velocity attenuation of the water distribution hole outlet along the radial direction, improve the uniformity of water distribution and distribution, make the temperature and flow distribution in the heat storage and cold storage process more uniform, improve the thermocline quality, and improve the heat storage and cold storage efficiency.

Description

Technical Field

[0001] This invention relates to the field of inclined thermocline storage tank technology, and in particular to an inclined thermocline storage tank structure with branch inclined water distributor. Background Technology

[0002] Currently, thermocline thermal storage technology uses water as the heat storage medium and utilizes the sensible heat of water to store heat. It is widely used in multi-energy complementary systems. During the heat storage and release process, the thickness of the thermocline directly affects its working efficiency. Therefore, a suitable water distributor structure is conducive to the uniform injection of water. The uniform distribution of the speed and flow rate when hot and cold water are injected into the tank helps to reduce the thickness of the thermocline and improve working efficiency.

[0003] Existing thermocline water tank distributors are mostly symmetrical structures such as discs or octagons, with distribution holes arranged radially. During actual operation, when fluid is injected into the tank through these holes, the outlet velocity decreases significantly radially, negatively impacting water distribution uniformity, hindering thermocline formation, disrupting thermocline uniformity, and causing energy loss. Therefore, the distributor structure needs optimization.

[0004] Chinese patent number CN207729761U, entitled "A Water Storage Device with a Combined Jet Pipe Water Distributor," describes a water storage device equipped with a combined jet pipe water distributor. This device includes a disc-shaped water distributor, jet pipes, and an orifice plate water distribution plate. The jet pipes are connected to the orifice plate water distribution plate and fixed to its upper part. The jet pipes are divided into multiple rings surrounding the disc-shaped water distributor, with the length of the jet pipes decreasing sequentially from the center of the orifice plate water distribution plate outwards. This structure effectively reduces unusable space within the storage tank caused by the water distributor's location, effectively improves the utilization rate of the storage tank, increases the uniformity of water flow, and effectively reduces the thickness of the thermocline layer.

[0005] Chinese Patent No. CN206300532U, entitled "A Water Storage Device with Umbrella-Shaped Combined Water Distributor," describes a device equipped with an umbrella-shaped combined water distributor. This distributor includes a disc-shaped water distributor, a gradient flow equalization pipe, a flow equalization plate, and an umbrella-shaped flow equalization device. The disc-shaped water distributor has openings on its side. The gradient flow equalization pipe connects to the flow equalization plate and has through holes extending vertically. The flow equalization plate connects to the disc-shaped water distributor and also has through holes extending vertically. The umbrella-shaped flow equalization device is arranged on the through holes. The umbrella-shaped combined water distributor includes an upper umbrella-shaped combined water distributor and a lower umbrella-shaped combined water distributor. The upper and lower umbrella-shaped combined water distributors have the same structure but are symmetrically arranged at the upper and lower ends of the water storage device, respectively. This device can effectively reduce the unusable space inside the energy storage tank caused by the location of the water distributor, resulting in a wider outflow coverage, increased outflow uniformity, and improved cold storage and release capabilities.

[0006] It is evident that most studies on water distributor structures focus on the stage when fluid flows out through the distribution holes, with less research on the velocity changes inside the water distributor and the distribution of outlet velocity and flow rate, and incomplete consideration of practical applications. Summary of the Invention

[0007] The purpose of this invention is to address the aforementioned deficiencies in the existing technology by providing a sloped-temperature layer storage tank structure with a branch-type inclined water distributor, which can effectively improve the uniformity of fluid entering the hot water storage tank, reduce the thickness of the sloped-temperature layer, and improve the heat storage efficiency of the hot water storage tank.

[0008] The present invention discloses a tilted-temperature layer storage tank structure with a branch inclined water distributor. The technical solution includes a tilted-temperature layer storage tank body (1), a base (2), high-temperature water inlet / outlet pipes (5), an upper water distributor (6), a low-temperature water inlet / outlet pipe (7), and a lower water distributor (8). The tilted-temperature layer storage tank body (1) is installed on the base (2). The upper water distributor (6) is located on the upper part of the tilted-temperature layer storage tank body (1) and is connected to the high-temperature water inlet / outlet pipe (5). The lower water distributor (8) is located on the lower part of the tilted-temperature layer storage tank body (1) and is connected to the low-temperature water inlet / outlet pipe (7). The upper water distributor (6) and the lower water distributor (8) are constructed with branch inclined water distributors. A branch-inclined variable aperture water distributor includes a distribution buffer chamber (a1), a distributor branch main pipe (a2), a water distributor outlet pipe (a3), and a distributor branch secondary branch pipe (a4). The upper end of the distribution buffer chamber (a1) is connected to the inner end of the high-temperature water inlet / outlet pipe (5). Multiple sets of distributor branch main pipes (a2) are connected to the outer side of the distribution buffer chamber (a1). Each set of distributor branch main pipes (a2) is inclined downwards at a certain angle to the horizontal plane. Multiple sets of distributor branch secondary branch pipes (a4) are distributed on each set of distributor branch main pipes (a2). Multiple water distributor outlet pipes (a3) ​​are evenly distributed below the distributor branch secondary branch pipes (a4).

[0009] Preferably, the above-mentioned distributor branch pipe main (a2) is in eight groups, forming an octagonal distribution structure. One end of each group of distributor branch pipe main (a2) is connected to the outer wall of the distribution buffer chamber (a1), and the other end extends outward evenly from the distribution buffer chamber (a1) as the center.

[0010] Preferably, each set of distributor branch main pipes (a2) is vertically connected to multiple distributor branch secondary pipes (a4), and the distributor branch secondary pipes (a4) are successively lengthened from the inside to the outside.

[0011] Preferably, the above-mentioned distributor branch pipe main (a2) is in six groups, forming a hexagonal distribution structure. One end of each group of distributor branch pipe main (a2) is connected to the outer wall of the distribution buffer chamber (a1), and the other end extends outward evenly from the distribution buffer chamber (a1) as the center.

[0012] Preferably, each set of distributor branch main pipes (a2) is vertically connected to multiple distributor branch secondary pipes (a4), and the distributor branch secondary pipes (a4) are successively lengthened from the inside to the outside.

[0013] Preferably, the above-mentioned distributor branch pipe (a4) is a straight pipe.

[0014] Preferably, the above-mentioned distributor branch pipe (a4) is a bent pipe structure.

[0015] Preferably, the main branch pipe (a2) of each distributor is inclined downward at an angle of 10-30 degrees to the horizontal plane.

[0016] Preferably, a breather valve (3) and a safety valve (4) are installed on the upper part of the above-mentioned inclined thermocline storage tank (1).

[0017] Preferably, the water distributor outlet pipes (a3) ​​evenly distributed below the aforementioned distributor branch pipe (a4) gradually shorten from the inside to the outside, and the lower outlets of multiple water distributor outlet pipes (a3) ​​are located on the same horizontal plane.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention involves the cold and hot water entering a distribution buffer chamber through an inlet pipe, and then evenly entering multiple main branch pipes of a distributor after buffering. Each main branch pipe is vertically connected to multiple secondary branch pipes of the distributor, and the secondary branch pipes of the distributor increase in length from the inside to the outside. The outlet pipes of the water distributor are distributed on the secondary branch pipes, and their positions and orifices are designed according to actual working conditions. The outlet pipes of the water distributor have a certain length to ensure that all outlet holes are at the same horizontal height. The water distributors are arranged simultaneously above and below the storage tank, and the branch pipes are all inclined downwards. In summary, this invention can reduce the radial velocity attenuation at the outlet of the water distribution hole, improve the uniformity of water distribution, make the temperature and flow distribution more uniform during heat and cold storage, improve the quality of the inclined temperature layer, and improve the heat and cold storage efficiency; it can also reduce the thickness of the inclined temperature layer, improve the uniformity of temperature distribution inside the tank, and improve energy storage efficiency; in addition, the equipment required by this invention is simple, and the construction is simple and reliable. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view diagram of a variable orifice water distributor with branch inclined type; Figure 3 This is a top view of a structural schematic diagram of a variable orifice water distributor with branch inclined type; Figure 4 This is a schematic diagram of the temperature distribution on the central axis surface under different operating conditions when the rotation ratio is 0.9; Figure 5 This is a schematic diagram showing the variation of the dimensionless thermocline thickness with the rotation ratio; Figure 6 This is a schematic diagram illustrating the change in energy storage efficiency with rotation ratio; Figure 7 It is a temperature distribution cloud map of the central axis surface under different inclination angles of the main branches; Figure 8 This is a schematic diagram of the energy storage efficiency at the end of thermal storage at different main branch inclination angles. In the diagram above: the inclined temperature layer storage tank body (1), the base (2), the high temperature water inlet and outlet pipe (5), the upper water distributor (6), the low temperature water inlet and outlet pipe (7), the lower water distributor (8), the distribution buffer chamber (a1), the main branch pipe of the distributor (a2), the outlet pipe of the water distributor (a3), and the secondary branch pipe of the distributor (a4). Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Example 1, referring to Figures 1-3 The present invention discloses a tilted temperature layer storage tank structure with branch inclined water distributor, comprising a tilted temperature layer storage tank body (1), a base (2), a high-temperature water inlet / outlet pipe (5), an upper water distributor (6), a low-temperature water inlet / outlet pipe (7), and a lower water distributor (8). The tilted temperature layer storage tank body (1) is installed on the base (2). The upper water distributor (6) is provided on the upper part of the tilted temperature layer storage tank body (1) and is connected to the high-temperature water inlet / outlet pipe (5). The lower part of the tilted temperature layer storage tank body (1) is provided with a lower water distributor (8) and is connected to the low-temperature water inlet / outlet pipe (7). The upper water distributor (6) and the lower water distributor (8) are tilted with branch inclined water distributors. The inclined variable aperture water distributor includes a distribution buffer chamber (a1), a distributor branch main pipe (a2), a water distributor outlet pipe (a3), and a distributor branch secondary branch pipe (a4). The upper end of the distribution buffer chamber (a1) is connected to the inner end of the high temperature water inlet / outlet pipe (5). Multiple sets of distributor branch main pipes (a2) are connected to the outer side of the distribution buffer chamber (a1). Each set of distributor branch main pipes (a2) is inclined downwards at a certain angle to the horizontal plane. Multiple sets of distributor branch secondary branch pipes (a4) are distributed on each set of distributor branch main pipes (a2). Multiple water distributor outlet pipes (a3) ​​are evenly distributed below the distributor branch secondary branch pipes (a4).

[0022] Reference Figure 3The distributor branch pipe main (a2) mentioned in this invention adopts eight groups to form an octagonal distribution structure. One end of each group of distributor branch pipe main (a2) is connected to the outer wall of the distribution buffer chamber (a1), and the other end extends outward evenly with the distribution buffer chamber (a1) as the center, and the outer end is a closed structure.

[0023] In this invention, each set of distributor branch main pipes (a2) is vertically connected to multiple distributor branch secondary pipes (a4), and the distributor branch secondary pipes (a4) are successively lengthened from the inside to the outside.

[0024] The aforementioned distributor branch pipe (a4) is a straight pipe. Each set of distributor branch pipe main pipes (a2) is inclined downwards at an angle of 10 degrees to the horizontal plane. The above-mentioned inclined temperature layer storage tank (1) is equipped with a breather valve (3) and a safety valve (4). The water distributor outlet pipes (a3) ​​evenly distributed below the aforementioned distributor branch pipe (a4) gradually shorten from the inside to the outside, and the lower outlets of multiple water distributor outlet pipes (a3) ​​are located on the same horizontal plane.

[0025] The inclined temperature layer storage tank structure with branch inclined water distributor mentioned in this invention includes the following process in its use: During the process of utilizing the inclined thermosphere for heat storage, the hot and cold water will naturally stratify due to the density difference. Above the inclined thermosphere tank body (1) is high-temperature water with lower density, while below the inclined thermosphere tank body (1) is low-temperature water with higher density. Therefore, it is necessary to install a branch-type inclined variable aperture water distributor at a certain position above and below the tank. The upper water distributor (6) is used for hot water injection, and the lower water distributor (8) is used for cold water storage. During the heat storage process, the circulating pump injects high-temperature hot water through the high-temperature water inlet / outlet pipe (5). The hot water enters the upper water distributor (6) through the high-temperature water inlet / outlet pipe (5). When flowing through the upper water distributor (6), the hot water first enters the distribution buffer chamber (a1) for buffering, and then is evenly distributed to the main branch pipe (a2) of the distributor. There are 8 of them, which are centrally distributed around the distribution buffer chamber (a1). Then, they pass through multiple secondary branch pipes (a4) of the distributor and the water distributor outlet pipe (a3) ​​provided on the secondary branch pipe (a4). The outlets of the water distributor outlet pipe (a3) ​​are at the same height, and the hot water flows into the tank at the same level for heat storage. At the same time, the cold water below flows out of the tank through the lower water distributor (8), completing the heat storage process. The cooling process is the same as this process. During the cold storage process, the circulating pump injects low-temperature cold water through the low-temperature water inlet and outlet pipe (7). The cold water enters the lower water distributor (8) through the low-temperature water inlet and outlet pipe (7), and after flowing through the lower water distributor (8), it enters the tank from the bottom of the tank. At the same time, the hot water below flows out of the tank through the upper water distributor (6), thus completing the cold storage process. The heat extraction process is the same.

[0026] Example 2: The inclined temperature layer storage tank structure with branch inclined water distributor mentioned in this invention includes an inclined temperature layer storage tank body (1), a base (2), a high-temperature water inlet / outlet pipe (5), an upper water distributor (6), a low-temperature water inlet / outlet pipe (7), and a lower water distributor (8). The inclined temperature layer storage tank body (1) is installed on the base (2). The upper water distributor (6) is provided on the upper part of the inclined temperature layer storage tank body (1) and is connected to the high-temperature water inlet / outlet pipe (5). The lower part of the inclined temperature layer storage tank body (1) is provided with a lower water distributor (8) and is connected to the low-temperature water inlet / outlet pipe (7). The upper water distributor (6) and the lower water distributor (8) are provided with branch inclined water distributors. The inclined variable aperture water distributor includes a distribution buffer chamber (a1), a main branch pipe (a2), a water distributor outlet pipe (a3), and a secondary branch pipe (a4). The upper end of the distribution buffer chamber (a1) is connected to the inner end of the high temperature water inlet / outlet pipe (5). Multiple sets of main branch pipes (a2) are connected to the outer side of the distribution buffer chamber (a1). Each set of main branch pipes (a2) is inclined downwards at a certain angle to the horizontal plane. Multiple sets of secondary branch pipes (a4) are distributed on each set of main branch pipes (a2). Multiple water distributor outlet pipes (a3) ​​are evenly distributed below the secondary branch pipes (a4).

[0027] The difference from Example 1 is: The distributor branch pipes (a2) mentioned in this invention are arranged in six groups, forming a hexagonal distribution structure. One end of each group of distributor branch pipes (a2) is connected to the outer wall of the distribution buffer chamber (a1), and the other end extends evenly outward from the distribution buffer chamber (a1) as the center. In addition, each group of distributor branch pipes (a2) is inclined downward at an angle of 30 degrees to the horizontal plane. This embodiment can also basically achieve the purpose of this invention, but the effect is not as good as that of embodiment 1.

[0028] Example 3: The inclined temperature layer storage tank structure with branch inclined water distributor mentioned in this invention includes an inclined temperature layer storage tank body (1), a base (2), a high-temperature water inlet / outlet pipe (5), an upper water distributor (6), a low-temperature water inlet / outlet pipe (7), and a lower water distributor (8). The inclined temperature layer storage tank body (1) is installed on the base (2). The upper water distributor (6) is provided on the upper part of the inclined temperature layer storage tank body (1) and is connected to the high-temperature water inlet / outlet pipe (5). The lower part of the inclined temperature layer storage tank body (1) is provided with a lower water distributor (8) and is connected to the low-temperature water inlet / outlet pipe (7). The upper water distributor (6) and the lower water distributor (8) are provided with branch inclined water distributors. The inclined variable aperture water distributor includes a distribution buffer chamber (a1), a main branch pipe (a2), a water distributor outlet pipe (a3), and a secondary branch pipe (a4). The upper end of the distribution buffer chamber (a1) is connected to the inner end of the high temperature water inlet / outlet pipe (5). Multiple sets of main branch pipes (a2) are connected to the outer side of the distribution buffer chamber (a1). Each set of main branch pipes (a2) is inclined downwards at a certain angle to the horizontal plane. Multiple sets of secondary branch pipes (a4) are distributed on each set of main branch pipes (a2). Multiple water distributor outlet pipes (a3) ​​are evenly distributed below the secondary branch pipes (a4).

[0029] The difference from Example 1 is: The distributor branch pipe (a4) mentioned in this invention has a bent pipe structure. By uniformly distributing the branches, a mesh structure is formed, thereby achieving the purpose of this invention. It can effectively improve the uniformity of fluid entering the hot water storage tank, reduce the thickness of the inclined temperature layer, and improve the heat storage efficiency of the hot water storage tank.

[0030] Example 4: The inclined temperature layer storage tank structure with branch inclined water distributor mentioned in this invention includes an inclined temperature layer storage tank body (1), a base (2), a high-temperature water inlet / outlet pipe (5), an upper water distributor (6), a low-temperature water inlet / outlet pipe (7), and a lower water distributor (8). The inclined temperature layer storage tank body (1) is installed on the base (2). The upper water distributor (6) is provided on the upper part of the inclined temperature layer storage tank body (1) and is connected to the high-temperature water inlet / outlet pipe (5). The lower part of the inclined temperature layer storage tank body (1) is provided with a lower water distributor (8) and is connected to the low-temperature water inlet / outlet pipe (7). The upper water distributor (6) and the lower water distributor (8) are provided with branch inclined water distributors. The inclined variable aperture water distributor includes a distribution buffer chamber (a1), a main branch pipe (a2), a water distributor outlet pipe (a3), and a secondary branch pipe (a4). The upper end of the distribution buffer chamber (a1) is connected to the inner end of the high temperature water inlet / outlet pipe (5). Multiple sets of main branch pipes (a2) are connected to the outer side of the distribution buffer chamber (a1). Each set of main branch pipes (a2) is inclined downwards at a certain angle to the horizontal plane. Multiple sets of secondary branch pipes (a4) are distributed on each set of main branch pipes (a2). Multiple water distributor outlet pipes (a3) ​​are evenly distributed below the secondary branch pipes (a4).

[0031] The difference from Example 2 is: The distributor branch pipe (a4) mentioned in this invention has a bent pipe structure. By uniformly distributing the branches, a mesh structure is formed, thereby achieving the purpose of this invention. It can effectively improve the uniformity of fluid entering the hot water storage tank, reduce the thickness of the inclined temperature layer, and improve the heat storage efficiency of the hot water storage tank.

[0032] Example 5: The inclined temperature layer storage tank structure with branch inclined water distributor mentioned in this invention includes an inclined temperature layer storage tank body (1), a base (2), a high-temperature water inlet / outlet pipe (5), an upper water distributor (6), a low-temperature water inlet / outlet pipe (7), and a lower water distributor (8). The inclined temperature layer storage tank body (1) is installed on the base (2). The upper water distributor (6) is provided on the upper part of the inclined temperature layer storage tank body (1) and is connected to the high-temperature water inlet / outlet pipe (5). The lower part of the inclined temperature layer storage tank body (1) is provided with a lower water distributor (8) and is connected to the low-temperature water inlet / outlet pipe (7). The upper water distributor (6) and the lower water distributor (8) are provided with branch inclined water distributors. The inclined variable aperture water distributor includes a distribution buffer chamber (a1), a main branch pipe (a2), a water distributor outlet pipe (a3), and a secondary branch pipe (a4). The upper end of the distribution buffer chamber (a1) is connected to the inner end of the high temperature water inlet / outlet pipe (5). Multiple sets of main branch pipes (a2) are connected to the outer side of the distribution buffer chamber (a1). Each set of main branch pipes (a2) is inclined downwards at a certain angle to the horizontal plane. Multiple sets of secondary branch pipes (a4) are distributed on each set of main branch pipes (a2). Multiple water distributor outlet pipes (a3) ​​are evenly distributed below the secondary branch pipes (a4).

[0033] The difference from Example 1 is: Support rods can be added to the lower part of the main branch pipe (a2) of the multi-group distributor to improve the stability of the main branch pipe (a2), make the device more robust, and extend the service life of the device.

[0034] In addition, the measurement indicators and experimental data of the water distribution effect of the water distributor mentioned in this invention are as follows: The progress of the thermal storage process is measured by the rotation ratio, while the effectiveness of different water distributor structures is measured by the thickness of the inclined thermocline and the thermal storage efficiency. The rotation ratio is the ratio of the injected volume to the tank volume.

[0035] Regarding the thickness of the inclined temperature layer: the smaller the thickness of the inclined temperature layer, the more obvious the temperature stratification, and the better the water distribution effect of the water distributor.

[0036] In addition, the number of main branches for different water distributors is referenced. Figure 4 The figure shows the temperature distribution on the central surface of different branches when the rotation ratio is 0.9.

[0037] Figure 5 , Figure 6Under the three operating conditions, when using 6 main circuits, the radial plane temperature distribution is uneven due to the insufficient number of water distributor branches, resulting in the thickest inclined temperature layer. The inclined temperature layers are thinner when using 8 and 10 main circuits. However, the use of 10 main circuits causes excessive temperature concentration in some areas, which increases heat dissipation and intensifies the mixing of hot and cold water, leading to more energy loss and reduced energy storage efficiency. In addition, the more branches there are, the more complex the structure and the higher the production cost. Therefore, the use of 8 main circuits in Example 1 is more reasonable.

[0038] Furthermore, the inclination angle of the main branch of different water distributors has the following effects: Figure 7 The figure shows the temperature distribution cloud map of the central axis when the tilt angle of the main branch of the water distributor is 10° and 30°. It can be seen from the figure that the temperature distribution is more uniform when the tilt angle is 10° compared to 30°. This can effectively prevent the local temperature of the wall from being too high. At the same time, the thickness of the inclined temperature layer is thinner, which weakens the axial heat transfer and reduces the energy storage loss caused by the mixing of hot and cold water.

[0039] In addition, compared with the commonly used water distributor structure (tilt angle 0°), the energy storage effect is the best when the tilt angle is 10°. When the angle is 30°, the effect is not as good as the commonly used structure. Therefore, there is an optimal tilt angle. When the tilt angle is too large, it will lead to uneven temperature distribution, suppress the temperature stratification in the tank and cause more energy loss. A tilt angle of 10° is more reasonable.

[0040] The above description is merely a partial preferred embodiment of the present invention. Any person skilled in the art can modify the above-described technical solutions or modify them into equivalent technical solutions. Therefore, any simple modifications or equivalent transformations made based on the technical solutions of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A thermocentric layer storage tank structure with branch inclined water distributor, comprising a thermocentric layer storage tank body (1), a base (2), a high-temperature water inlet / outlet pipe (5), an upper water distributor (6), a low-temperature water inlet / outlet pipe (7), and a lower water distributor (8), wherein the thermocentric layer storage tank body (1) is installed on the base (2), the upper water distributor (6) is provided on the upper part of the thermocentric layer storage tank body (1), and the upper water distributor (6) is connected to the high-temperature water inlet / outlet pipe (5), and the lower water distributor (8) is provided on the lower part of the thermocentric layer storage tank body (1), and the lower water distributor (8) is connected to the low-temperature water inlet / outlet pipe (7), characterized in that: The upper water distributor (6) and the lower water distributor (8) are both inclined variable aperture water distributors with branches. The inclined variable aperture water distributor with branches includes a distribution buffer chamber (a1), a main branch pipe (a2), a water distributor outlet pipe (a3), and a secondary branch pipe (a4). The upper end of the distribution buffer chamber (a1) is connected to the inner end of the high temperature water inlet / outlet pipe (5). Multiple sets of main branch pipes (a2) are connected to the outer side of the distribution buffer chamber (a1). Each set of main branch pipes (a2) is inclined downwards at a certain angle to the horizontal plane. Multiple sets of secondary branch pipes (a4) are distributed on each set of main branch pipes (a2). Multiple water distributor outlet pipes (a3) ​​are evenly distributed below the secondary branch pipes (a4).

2. The inclined temperature layer storage tank structure with branch inclined water distributor according to claim 1, characterized in that: The distributor branch pipe main (a2) is composed of eight groups, forming an octagonal distribution structure. One end of each group of distributor branch pipe main (a2) is connected to the outer wall of the distribution buffer chamber (a1), and the other end extends outward evenly from the distribution buffer chamber (a1) as the center.

3. The inclined temperature layer storage tank structure with branch inclined water distributor according to claim 2, characterized in that: Each set of distributor branch main pipes (a2) is vertically connected to multiple distributor branch secondary pipes (a4), and the distributor branch secondary pipes (a4) are successively lengthened from the inside to the outside.

4. The inclined thermocline storage tank structure with branch inclined water distributor according to claim 1, characterized in that: The distributor branch pipe main (a2) consists of six groups, forming a hexagonal distribution structure. One end of each group of distributor branch pipe main (a2) is connected to the outer wall of the distribution buffer chamber (a1), and the other end extends outward evenly from the distribution buffer chamber (a1) as the center.

5. The inclined temperature layer storage tank structure with branch inclined water distributor according to claim 4, characterized in that: Each set of distributor branch main pipes (a2) is vertically connected to multiple distributor branch secondary pipes (a4), and the distributor branch secondary pipes (a4) are successively lengthened from the inside to the outside.

6. The inclined temperature layer storage tank structure with branch inclined water distributor according to claim 3 or 5, characterized in that: The distributor branch pipe (a4) is a straight pipe.

7. The inclined temperature layer storage tank structure with branch inclined water distributor according to claim 3 or 5, characterized in that: The distributor branch pipe (a4) is a bent pipe structure.

8. The inclined temperature layer storage tank structure with branch inclined water distributor according to claim 7, characterized in that: Each set of distributor branch pipes (a2) is tilted downwards at an angle of 10-30 degrees to the horizontal plane.

9. The inclined thermocline storage tank structure with branch inclined water distributor according to claim 8, characterized in that: The above-mentioned inclined temperature layer storage tank (1) is equipped with a breather valve (3) and a safety valve (4).

10. The inclined temperature layer storage tank structure with branch inclined water distributor according to claim 9, characterized in that: The water distributor outlet pipes (a3) ​​evenly distributed below the distributor branch pipe (a4) gradually shorten from the inside to the outside, and the lower outlets of multiple water distributor outlet pipes (a3) ​​are located on the same horizontal plane.

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