Water energy storage water distributor, water distribution system and water energy storage air conditioner

Abstract

The utility model provides a water energy storage water distributor, a water distribution system and a water energy storage air conditioner, and belongs to the field of water energy storage air conditioner systems. The problems that an existing water energy storage air conditioner is not ideal in water distribution effect, low in energy storage efficiency and poor in engineering applicability are solved. The water energy storage water distributor comprises an inner disc, an outer disc and a water distribution main pipe, the inner disc and the outer disc are each of a disc-shaped structure, a water outlet is formed in the inner disc, the inner disc is connected with the water distribution main pipe, the water outlet is communicated with the water distribution main pipe, and the inner disc is connected with the outer disc through a connecting piece. A gap exists between the inner disc and the outer disc. The water distribution system comprises an upper water distributor, a lower water distributor and a connecting pipeline, the upper water distributor and the lower water distributor are the same in structure, the upper water distributor and the lower water distributor both adopt the water energy storage water distributor structure, and the water distribution main pipe is connected with the connecting pipeline. The system is mainly used for a water energy storage air-conditioning system.

Description

Technical Field

[0001] The utility model belongs to the field of water energy storage air conditioning systems, and particularly relates to a water energy storage water distributor, a water distribution system and a water energy storage air conditioner. Background Technique

[0002] Energy storage technology plays an important role in solving the reasonable matching problem of energy production and utilization in the energy system. It stores energy using off-peak electricity and releases energy during peak power periods to meet the heating and cooling needs of users, thereby solving the imbalance problem between power production and utilization and achieving the function of "peak shaving and valley filling". In energy storage technology, the water energy storage system has been widely used because it does not require a dual-condition refrigeration unit, can maintain a high refrigeration efficiency, and can be used for both cooling and heat storage in winter and summer.

[0003] Water energy storage uses the principle of temperature stratification of cold and hot water to store cold and heat in a water tank. To achieve temperature stratification, currently, methods such as natural stratification type water energy storage, multi-tank energy storage, maze type energy storage, and diaphragm type energy storage can be used. Among them, natural stratification type water energy storage is a storage method with simple structure, high energy storage efficiency, and good economic benefits, and is currently widely used. Taking the cold storage process as an example, when using natural stratification for energy storage, low-temperature cold water at 4-6°C accumulates in the lower part of the cold storage tank, and high-temperature cold water at 10-18°C accumulates in the upper part of the cold storage tank. A transition temperature zone water layer needs to be formed between the upper high-temperature cold water area and the lower low-temperature cold water area to separate the low-temperature cold water and the high-temperature cold water flowing back in the water tank and prevent the mixing of the stored low-temperature cold water and the high-temperature cold water flowing back. This transition temperature zone water layer is the thermocline. The thickness of the thermocline is a key parameter affecting the energy storage efficiency. Therefore, forming a stable and appropriately thick thermocline during the energy storage process is the core to ensure the efficient operation of the energy storage system.

[0004] In a natural stratified energy storage pool, water distributors need to be installed at the lower and upper parts of the energy storage pool. Only through them can water be slowly and evenly distributed in the pool in the form of gravity flow, so as to form a stable thermocline with an appropriate thickness and effectively achieve natural stratification. Therefore, the water distributor is a key component for realizing stable water flow stratification in the energy storage pool. A water distributor with good performance needs to be able to make the water outflow more uniform, so as to play an important role in reducing disturbance, suppressing water flow mixing, and reducing the thickness of the thermocline. On the one hand, existing water distributors mostly adopt the water outlet methods of directly opening holes in pipes or setting round water outlet holes. The water flow at the water outlet of such water distributors will cause disturbance and impact on the thermocline, thus destroying the stability of the thermocline and affecting the energy storage efficiency. On the other hand, although existing water distributors such as H-shaped water distributors and octagonal water distributors can ensure the hydraulic balance of each branch, the multi-opening design with multiple inlets and outlets on each branch cannot guarantee the hydraulic balance of each inlet and outlet on the branch, resulting in uneven flow distribution, thus generating eddy currents and affecting the formation of the thermocline and reducing the energy storage efficiency. In addition, existing radial disc-shaped water distribution systems mostly adopt a single-group water distributor form, which can only be applied to cylindrical energy storage water tanks. However, in existing engineering energy storage pools, most are set in the underground space of buildings, and rectangular civil engineering water tanks are built using the building civil engineering structure. For rectangular civil engineering water tanks, multiple groups of water distributors need to be used according to specific dimensions. However, existing radial disc-shaped water distribution systems mostly adopt a single-group water distributor setting, which cannot be applied to rectangular civil engineering water tanks, resulting in limitations in engineering applications. Utility Model Content

[0005] In view of this, the present utility model aims to propose a water energy storage water distributor, a water distribution system, and a water energy storage air conditioner to solve the problems of unsatisfactory water distribution effect, low energy storage efficiency, and poor engineering applicability of existing water energy storage air conditioners.

[0006] To achieve the above object, the present utility model adopts the following technical solutions: A water energy storage water distributor includes an inner disc, an outer disc, and a main water distribution pipe. Both the inner disc and the outer disc are disc-shaped structures. The inner disc is provided with water outlets, the inner disc is connected to the main water distribution pipe, and the water outlets are communicated with the main water distribution pipe. The inner disc and the outer disc are connected by connecting pieces, and there is a gap between the inner disc and the outer disc.

[0007] Furthermore, the diameters of the inner disc and the outer disc are equal.

[0008] Furthermore, the number of the connecting pieces is multiple, and the multiple connecting pieces are evenly distributed along the circumferential direction.

[0009] Furthermore, the connecting pieces are flat irons.

[0010] The present utility model also provides a water distribution system using a water energy storage distributor, which includes an upper water distributor, a lower water distributor and a connecting pipe. The upper water distributor and the lower water distributor have the same structure. Both the upper water distributor and the lower water distributor adopt the above-mentioned water energy storage distributor structure. The main water distribution pipe is connected to the connecting pipe. The outer disk of the upper water distributor faces upward and is installed at the upper part of the energy storage water tank. The outer disk of the lower water distributor faces downward and is installed at the lower part of the energy storage water tank. Multiple groups of upper water distributors and lower water distributors are arranged in the energy storage water tank. The connecting pipe includes an upper water distribution pipe and a lower water distribution pipe. Multiple groups of upper water distributors are connected in parallel through the upper water distribution pipe, and multiple groups of lower water distributors are connected in parallel through the lower water distribution pipe. The upper water distribution pipe and the lower water distribution pipe are of symmetrical structure.

[0011] Furthermore, the upper water distribution pipe and the lower water distribution pipe are arranged symmetrically in an H shape.

[0012] Furthermore, the upper water distribution pipe and the lower water distribution pipe are respectively fixed to the top and bottom of the energy storage water tank through connecting frames.

[0013] Furthermore, the energy storage water tank is a cylindrical prefabricated water tank or a rectangular civil engineering water tank.

[0014] The present utility model also provides a water energy storage air conditioner using the water distribution system, which includes a water distribution system, a heat pump unit, an energy storage pump, a heat release pump, a heat exchanger, a first electric three-way valve, a second electric three-way valve, a third electric three-way valve and a fourth electric three-way valve. The heat pump unit is connected to the upper water distributor and the lower water distributor respectively through connecting pipes. An energy storage pump is arranged on the water inlet pipe of the heat pump unit. A first electric three-way valve and a second electric three-way valve are arranged on the side of the heat pump unit of the energy storage water tank. The heat exchanger is connected to the upper water distribution and the lower water distributor respectively through connecting pipes. A heat release pump is arranged on the water inlet pipe of the heat exchanger. A third electric three-way valve and a fourth electric three-way valve are arranged on the side of the heat exchanger of the energy storage water tank.

[0015] The present utility model also provides a usage method of the water energy storage air conditioner, which includes a cold storage process, a cold release process, a heat storage process and a heat release process;

[0016] During the cold storage process in use, turn on the heat pump unit and the energy storage pump, turn on the first electric three-way valve and adjust it to the left-in right-out mode, turn on the second electric three-way valve and adjust it to the right-in left-out mode, turn off the heat release pump, the third electric three-way valve and the fourth electric three-way valve. The low-temperature cold water produced by the heat pump unit is sent to the lower water distributor after being pressurized by the energy storage pump. The low-temperature cold water is distributed by the lower water distributor and then sent to the energy storage water tank for energy storage. The high-temperature cold water at the upper part of the energy storage water tank returns to the heat pump unit after passing through the upper water distributor, and the cold storage is completed by this cycle;

[0017] During the cold release process in use, turn on the energy release pump, turn on the third electric three-way valve and adjust it to the left-in and right-out mode, turn on the fourth electric three-way valve and adjust it to the right-in and left-out mode, and turn off the heat pump unit, energy storage pump, first electric three-way valve, and second electric three-way valve. The low-temperature cold water from the energy storage pool passes through the lower water distributor, is pressurized by the energy release pump and sent to the heat exchanger, where it exchanges heat with the user-side circulating water to provide chilled water for the user side. After heat exchange in the heat exchanger, the low-temperature cold water becomes high-temperature hot water and returns to the upper water distributor, and is distributed by the upper water distributor and then sent to the energy storage pool, thus completing the cold release through circulation;

[0018] During the heat storage process in use, turn on the heat pump unit and the energy storage pump, turn on the first electric three-way valve and adjust it to the left-in and up-out mode, turn on the second electric three-way valve and adjust it to the down-in and left-out mode, and turn off the energy release pump, third electric three-way valve, and fourth electric three-way valve. The high-temperature hot water produced by the heat pump unit is pressurized by the energy storage pump and sent to the upper water distributor. After being distributed by the upper water distributor, it is sent to the energy storage pool for heat storage. The low-temperature hot water at the lower part of the energy storage pool returns to the heat pump unit after passing through the lower water distributor, thus completing the heat storage through circulation;

[0019] During the heat release process in use, turn on the energy release pump, turn on the third electric three-way valve and adjust it to the up-in and right-out mode, turn on the fourth electric three-way valve and adjust it to the right-in and down-out mode, and turn off the heat pump unit, energy storage pump, first electric three-way valve, and second electric three-way valve. The high-temperature hot water from the energy storage pool passes through the upper water distributor, is pressurized by the energy release pump and sent to the heat exchanger, where it exchanges heat with the user-side circulating water to provide heating hot water for the user side. After heat exchange in the heat exchanger, the high-temperature hot water becomes low-temperature hot water and returns to the lower water distributor, and is distributed by the lower water distributor and then sent to the energy storage pool, thus completing the heat release through circulation.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model can improve the energy storage efficiency and engineering applicability of the water energy storage air conditioning system. It has the characteristics of low disturbance, more uniform and stable water flow distribution, better hydraulic balance, faster and thinner formation of the thermocline, and can adapt to energy storage tanks of different forms and sizes.

[0021] The water energy storage water distributor provided by the present utility model adopts two equal-diameter discs, namely an inner disc and an outer disc. The inner disc has a rectifying effect, which can reduce the water flow velocity at the water outlet and reduce the disturbance and impact of the water flow at the water outlet on the thermocline. The outer disc has a flow splitting effect, which can evenly split the cold and hot water rectified by the inner disc into the energy storage pool, making the water flow distribution more uniform and stable.

[0022] The connecting pipes of the water storage water distributor system provided by the present utility model adopt a completely symmetrical H-shaped design, which can ensure that the flow rates of the inlets and outlets of each water distributor are uniform, improve the hydraulic balance performance of the system, and prevent the generation of eddy currents. The design of multiple groups of water distributors is applicable to rectangular civil engineering energy storage water tanks with different sizes, and the number of water distributors can be adjusted according to engineering conditions, making the engineering applicability stronger.

[0023] The water storage air-conditioning water distributor using the water distributor of the present utility model can ensure that the Froude (Fr) number is ≤1, which is far lower than the design parameters of general water distributors. Therefore, the water flow distribution of this type of water distributor is more stable, superior to other types of water distributors, and it forms the thermocline fastest, the thermocline is thinnest, and the cold storage efficiency is the highest. Its structure is simple, the technical performance is stable and reliable, and all technical indicators have reached the most advanced level at home and abroad. Moreover, the structure is simple, convenient for installation, and the technical performance is stable and reliable. Brief Description of the Drawings

[0024] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0025] Figure 1 is a three-dimensional structure schematic diagram of a water storage water distributor according to the present utility model;

[0026] Figure 2 is a perspective structure schematic diagram of a water storage water distributor according to the present utility model;

[0027] Figure 3 is a structure schematic diagram of a water distribution system using a water storage water distributor according to the present utility model;

[0028] Figure 4 is a plan structure schematic diagram of a water distribution system using a water storage water distributor according to the present utility model;

[0029] Figure 5 is a sectional structure schematic diagram of a water distribution system using a water storage water distributor according to the present utility model;

[0030] Figure 6 is a structure schematic diagram of a water storage air conditioner using a water distribution system according to the present utility model;

[0031] Figure 7 is a schematic diagram of the cold storage process of the usage method of a water storage air conditioner according to the present utility model;

[0032] Figure 8 is a schematic diagram of the cold release process of the usage method of a water storage air conditioner according to the present utility model;

[0033] Figure 9 Schematic diagram of the heat storage process of a water energy storage air conditioner according to the present utility model;

[0034] Figure 10 Schematic diagram of the heat release process of a water energy storage air conditioner according to the present utility model;

[0035] Figure 11 Schematic diagram of the cold storage process of an energy storage water tank according to the present utility model;

[0036] Figure 12 Schematic diagram of the cold release process of an energy storage water tank according to the present utility model;

[0037] Figure 13 Schematic diagram of the heat storage process of an energy storage water tank according to the present utility model;

[0038] Figure 14 Schematic diagram of the heat release process of an energy storage water tank according to the present utility model.

[0039] In the figure: 1 - upper water distributor, 2 - lower water distributor, 3 - energy storage water tank, 4 - connecting pipe, 5 - inner disk, 6 - outer disk, 7 - connecting piece, 8 - water distribution main pipe, 9 - connecting frame, 10 - covering soil layer, 11 - heat pump unit, 12 - energy storage pump, 13 - energy release pump, 14 - heat exchanger, 15 - first electric three-way valve, 16 - second electric three-way valve, 17 - third electric three-way valve, 18 - fourth electric three-way valve, 19 - user-side heating and air-conditioning water pipe. Specific implementation mode

[0040] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0041] See Figure 1-2 In this embodiment, a water energy storage water distributor includes an inner disk 5, an outer disk 6 and a water distribution main pipe 8. Both the inner disk 5 and the outer disk 6 are in a disk-shaped structure. The inner disk 5 is provided with water outlets, the inner disk 5 is connected to the water distribution main pipe 8, and the water outlets are communicated with the water distribution main pipe 8. The inner disk 5 and the outer disk 6 are connected by a connecting piece 7, and there is a gap between the inner disk 5 and the outer disk 6 for the water distributor to discharge and intake water.

[0042] The inner disk 5 has a rectifying effect. After the water flow reaches the inner disk 5 through the main water distribution pipe 8, it is rectified by the inner disk 5, which can reduce the water flow velocity at the water outlet and reduce the disturbance and impact of the water flow at the water outlet on the thermocline. The outer disk 6 has a flow splitting effect and can evenly split the water rectified by the inner disk 5 into the energy storage water tank 3, making the water flow distribution more uniform and stable.

[0043] All components are connected by welding. The inner disk 5 and the outer disk 6 have the same diameter. Two disks with the same diameter are used to rectify and split the water flow at the water distributor outlet, thereby reducing the disturbance and impact of the water flow at the water distributor outlet on the thermocline and making the water flow distribution more uniform and stable.

[0044] The number of the connecting pieces 7 is multiple. The multiple connecting pieces 7 are evenly distributed along the circumferential direction to ensure the stable connection between the inner disk 5 and the outer disk 6. The length direction of the connecting piece 7 is arranged along the radial direction of the inner disk 5 and the outer disk 6 without blocking the water flow. The connecting piece 7 is preferably a flat iron.

[0045] See Figure 3-5 Describing this embodiment, a water distribution system using a water energy storage water distributor includes an upper water distributor 1, a lower water distributor 2 and a connecting pipe 4. The upper water distributor 1 and the lower water distributor 2 have the same structure. Both the upper water distributor 1 and the lower water distributor 2 adopt the above-mentioned water energy storage water distributor structure. The main water distribution pipe 8 is connected to the connecting pipe 4. The outer disk 6 of the upper water distributor 1 faces upward and is installed at the upper part of the energy storage water tank 3. The outer disk 6 of the lower water distributor 2 faces downward and is installed at the lower part of the energy storage water tank 3. Multiple groups of upper water distributors 1 and lower water distributors 2 are arranged in the energy storage water tank 3. The connecting pipe 4 includes an upper water distribution pipe and a lower water distribution pipe. Multiple groups of upper water distributors 1 are connected in parallel through the upper water distribution pipe. Multiple groups of lower water distributors 2 are connected in parallel through the lower water distribution pipe. The upper water distribution pipe and the lower water distribution pipe are of a symmetric structure.

[0046] According to conditions such as the cooling and heat storage requirements of different projects and the size of the energy storage water tank 3, parameters such as the number of water distributors, diameter, disk spacing, maximum flow rate, and the diameter of the main water distribution pipe are determined. A water distribution system is formed through the connection of the upper water distributor 1, the lower water distributor 2 and the connecting pipe 4. Water is distributed into the energy storage water tank 3 through the upper water distributor 1 and the lower water distributor 2, reducing the disturbance and impact on the thermocline and forming a thermocline with a small thickness and stability. The water distribution pipes with a completely symmetric structure make the pipe resistance of each group of upper water distributors 1 and lower water distributors 2 the same, ensuring the uniform flow rate at the inlet and outlet of each water distributor. The upper water distribution pipe and the lower water distribution pipe are arranged in an H-shaped symmetry to further optimize the consistency of the flow rate at the inlet and outlet.

[0047] The upper water distribution pipe and the lower water distribution pipe are respectively fixed to the top and bottom of the energy storage water tank 3 through the connecting frame 9, and different models of channel steel are selected for the connecting frame 9 according to the specific size of the water distributor. The energy storage water tank 3 is a cylindrical precast water tank or a rectangular civil engineering water tank, and can also be of other shapes and materials. A soil covering layer 10 can be provided on the upper part of the energy storage water tank 3.

[0048] Refer to Figure 6 In this embodiment, a water energy storage air conditioner using a water distribution system includes a water distribution system, a heat pump unit 11, an energy storage pump 12, a heat release pump 13, a heat exchanger 14, a first electric three-way valve 15, a second electric three-way valve 16, a third electric three-way valve 17, and a fourth electric three-way valve 18. The water distribution system is as shown in the above embodiment. The heat pump unit 11 is respectively connected to the upper water distributor 1 and the lower water distributor 2 through the connecting pipe 4. An energy storage pump 12 is provided on the water inlet pipe of the heat pump unit 11. A first electric three-way valve 15 and a second electric three-way valve 16 are provided on the heat pump unit side of the energy storage water tank 3. The heat exchanger 14 is respectively connected to the upper water distributor 1 and the lower water distributor 2 through the connecting pipe 4. A heat release pump 13 is provided on the water inlet pipe of the heat exchanger 14. A third electric three-way valve 17 and a fourth electric three-way valve 18 are provided on the heat exchanger side of the energy storage water tank 3. The heat exchanger 14 is preferably a plate heat exchanger.

[0049] The functions of cold storage, cold release, heat storage, and heat release of the water energy storage air conditioner are realized by adjusting the heat pump unit 11, the energy storage pump 12, the heat release pump 13, the first electric three-way valve 15, the second electric three-way valve 16, the third electric three-way valve 17, and the fourth electric three-way valve 18.

[0050] Refer to Figure 7-10 In this embodiment, the present invention also provides a method for using a water energy storage air conditioner. The water energy storage air conditioner is as shown in the above embodiment, and it includes a cold storage process, a cold release process, a heat storage process, and a heat release process.

[0051] As Figure 7 shown, during the cold storage process, the heat pump unit 11 and the energy storage pump 12 are turned on. The first electric three-way valve 15 is turned on and adjusted to the left-in right-out mode. The second electric three-way valve 16 is turned on and adjusted to the right-in left-out mode. The heat release pump 13, the third electric three-way valve 17, and the fourth electric three-way valve 18 are turned off. The low-temperature cold water produced by the heat pump unit 11 is pressurized by the energy storage pump 12 and sent to the lower water distributor 2. The low-temperature cold water is distributed by the lower water distributor 2 and then sent to the energy storage water tank 3 for energy storage. The high-temperature cold water on the upper part of the energy storage water tank 3 returns to the heat pump unit 11 after passing through the upper water distributor 1, and the cold storage is completed in this cycle;

[0052] As Figure 11As shown in the figure, during the cold storage process of the water energy storage air conditioner, the low-temperature chilled water produced by the heat pump unit 11 is distributed by the lower water distributor 2 and stays at the lower part of the energy storage pool 3, forming a thin and stable thermocline between the low-temperature chilled water at the lower part of the energy storage pool 3 and the high-temperature chilled water at the upper part of the energy storage pool 3. There is no mixing phenomenon between the low-temperature chilled water at the lower part and the high-temperature chilled water at the upper part of the energy storage pool 3 during the cold storage process. As the cold storage process progresses, the proportion of the low-temperature chilled water at the lower part of the energy storage pool 3 continuously increases until the water temperature in the energy storage pool 3 reaches the design value, and the cold storage process is completed.

[0053] As Figure 8 shown, during the cold release process in use, the energy release pump 13 is turned on, the third electric three-way valve 17 is turned on and adjusted to the left-in right-out mode, the fourth electric three-way valve 18 is turned on and adjusted to the right-in left-out mode, and the heat pump unit 11, the energy storage pump 12, the first electric three-way valve 15, and the second electric three-way valve 16 are turned off. The low-temperature chilled water from the energy storage pool 3 passes through the lower water distributor 2, is pressurized by the energy release pump 13 and sent to the heat exchanger 14, where it exchanges heat with the user-side circulating water to provide chilled water for the user side. After the low-temperature chilled water exchanges heat in the heat exchanger 14, it becomes high-temperature chilled water and returns to the upper water distributor 1. It is distributed by the upper water distributor 1 and then sent to the energy storage pool 3, and the cold release is completed in this cycle.

[0054] As Figure 12 shown, during the cold release process of the water energy storage air conditioner, the high-temperature chilled water returned from the heat exchanger 14 is distributed by the upper water distributor 1 and stays at the upper part of the energy storage pool 3, forming a thin and stable thermocline between the high-temperature chilled water at the upper part of the energy storage pool 3 and the low-temperature chilled water stored at the lower part of the energy storage pool 3. There is no mixing phenomenon between the high-temperature chilled water at the upper part and the low-temperature chilled water at the lower part of the energy storage pool 3 during the cold release process. As the cold release process progresses, the proportion of the low-temperature chilled water at the lower part of the energy storage pool 3 continuously decreases until all the low-temperature chilled water in the energy storage pool is released, and the cold release process is completed.

[0055] As Figure 9 shown, during the heat storage process in use, the heat pump unit 11 and the energy storage pump 12 are turned on, the first electric three-way valve 15 is turned on and adjusted to the left-in up-out mode, the second electric three-way valve 16 is turned on and adjusted to the down-in left-out mode, and the energy release pump 13, the third electric three-way valve 17, and the fourth electric three-way valve 18 are turned off. The high-temperature hot water produced by the heat pump unit 11 is pressurized by the energy storage pump 12 and sent to the upper water distributor 1. The high-temperature hot water is distributed by the upper water distributor 1 and then sent to the energy storage pool 3 for heat storage. The low-temperature hot water at the lower part of the energy storage pool 3 returns to the heat pump unit 11 after passing through the lower water distributor 2, and the heat storage is completed in this cycle.

[0056] As Figure 13As shown in the figure, during the heat storage process of the water energy storage air conditioner, the high-temperature hot water produced by the heat pump unit 11 stays in the upper part of the energy storage water tank 3 after being distributed by the upper water distributor 1. A thin and stable thermocline is formed between the high-temperature hot water in the upper part of the energy storage water tank 3 and the low-temperature hot water in the lower part of the energy storage water tank 3. There is no mixing phenomenon between the high-temperature hot water in the upper part and the low-temperature hot water in the lower part of the energy storage water tank 3 during the heat storage process. As the heat storage process progresses, the proportion of high-temperature hot water in the upper part of the energy storage water tank 3 continuously increases until the water temperature in the energy storage water tank 3 reaches the design value, and the heat storage process is completed.

[0057] As Figure 10 shown, during the heat release process in use, the energy release pump 13 is turned on, the third electric three-way valve 17 is turned on and adjusted to the upper-in and right-out mode, the fourth electric three-way valve 18 is turned on and adjusted to the right-in and lower-out mode, and the heat pump unit 11, the energy storage pump 12, the first electric three-way valve 15, and the second electric three-way valve 16 are turned off. The high-temperature hot water from the energy storage water tank 3 passes through the upper water distributor 1, is pressurized by the energy release pump 13 and then sent to the heat exchanger 14. The heat exchanger 14 exchanges heat with the circulating water on the user side to provide heating hot water for the user side. The high-temperature hot water becomes low-temperature hot water after heat exchange in the heat exchanger 14 and returns to the lower water distributor 2. After being distributed by the lower water distributor 2, it is sent to the energy storage water tank 3, and the heat release is completed in this cycle.

[0058] As Figure 14 shown, during the heat release process of the water energy storage air conditioner, the low-temperature hot water returned from the heat exchanger 14 stays in the lower part of the energy storage water tank 3 after being distributed by the lower water distributor 2. A thin and stable thermocline is formed between the low-temperature hot water in the lower part of the energy storage water tank 3 and the high-temperature hot water stored in the upper part of the energy storage water tank 3. There is no mixing phenomenon between the low-temperature hot water in the lower part and the high-temperature hot water in the upper part of the energy storage water tank 3 during the heat release process. As the heat release process progresses, the proportion of high-temperature hot water in the upper part of the energy storage water tank 3 continuously decreases until all the high-temperature hot water in the energy storage water tank is released, and the heat release process is completed.

[0059] The utility model can improve the energy storage efficiency and engineering applicability of the water energy storage air conditioner system. It has the characteristics of low disturbance, more uniform and stable water flow distribution, better hydraulic balance, faster and thinner formation of the thermocline, and can adapt to energy storage water tanks of different forms and sizes.

[0060] The water distribution device for water energy storage provided by the utility model adopts two equal-diameter discs, namely an inner disc and an outer disc. The inner disc has a rectifying effect, which can reduce the water flow velocity at the water outlet and reduce the disturbance and impact of the water flow at the water outlet on the thermocline. The outer disc has a shunting effect, which can evenly shunt the cold and hot water rectified by the inner disc into the energy storage water tank, making the water flow distribution more uniform and stable.

[0061] The connecting pipes of the water distribution system using the water storage distributor provided by the present utility model adopt a completely symmetrical H-shaped design, which can ensure the uniform flow rate at the water inlet and outlet of each distributor, improve the hydraulic balance performance of the system, and prevent the generation of eddy currents. The design of multiple groups of distributors is adopted, which is applicable to rectangular civil engineering energy storage pools with different sizes, and the number of distributors can be adjusted according to engineering conditions, with stronger engineering applicability.

[0062] The water storage air-conditioning distributor using the distributor of the present utility model can ensure that the Froude (Fr) number is ≤1, far lower than the design parameters of general distributors. Therefore, the water flow distribution of this type of distributor is more stable, superior to other types of distributors, and forms the inclined temperature layer fastest, the inclined temperature layer is thinnest, and the cold storage efficiency is the highest. Its structure is simple, the technical performance is stable and reliable, and all technical indicators have reached the most advanced level at home and abroad. Moreover, the structure is simple, convenient for installation, and the technical performance is stable and reliable.

[0063] The embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The embodiments do not describe all details in detail, nor limit the present utility model to the specific embodiments described. According to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model.

Claims

1. A water storage water distributor, characterized in that: It comprises an inner plate (5), an outer plate (6) and a water distribution pipe (8). The inner plate (5) and the outer plate (6) are both disc-shaped structures. The inner plate (5) is provided with a water outlet. The inner plate (5) is connected to the water distribution pipe (8). The water outlet is communicated with the water distribution pipe (8). The inner plate (5) and the outer plate (6) are connected via a connecting piece (7). There is a gap between the inner plate (5) and the outer plate (6).

2. A water energy storage water distributor according to claim 1, characterized in that: The inner disk (5) and the outer disk (6) have the same diameter.

3. The water energy storage water distributor according to claim 1, characterized in that: There are a plurality of connecting pieces (7), and the connecting pieces (7) are evenly distributed along the circumferential direction.

4. The water energy storage water distributor according to claim 1, characterized in that: The connecting piece (7) is flat iron.

5. A water distribution system using the water storage water distributor according to any one of claims 1 to 4, characterized in that: It comprises an upper water distributor (1), a lower water distributor (2) and a connecting pipe (4). The upper water distributor (1) and the lower water distributor (2) have the same structure and are both water energy storage water distributor structures according to any one of claims 1 to 4. The water distribution main pipe (8) is connected to the connecting pipe (4). The outer plate (6) of the upper water distributor (1) faces upward and is installed on the upper part of the energy storage tank (3). The outer plate (6) of the lower water distributor (2) faces downward and is installed on the lower part of the energy storage tank (3). Multiple groups of upper water distributors (1) and lower water distributors (2) are arranged in the energy storage tank (3). The connecting pipe (4) comprises an upper water distribution pipe and a lower water distribution pipe. Multiple groups of upper water distributors (1) are connected in parallel through the upper water distribution pipe, and multiple groups of lower water distributors (2) are connected in parallel through the lower water distribution pipe. The upper water distribution pipe and the lower water distribution pipe are symmetrical structures.

6. A water distribution system using a water storage water distributor according to claim 5, characterized in that: The upper water distribution pipeline and the lower water distribution pipeline are arranged in an H-shaped symmetrical manner.

7. A water distribution system using a water storage water distributor according to claim 5, characterized in that: The upper water distribution pipeline and the lower water distribution pipeline are respectively fixed to the top and the bottom of the energy storage tank (3) through a connecting frame (9).

8. A water distribution system using a water storage water distributor according to claim 5, characterized in that: The energy storage pool (3) is a cylindrical prefabricated water tank.

9. A water distribution system using a water energy storage water distributor according to claim 5, characterized in that: The energy storage pool (3) is a rectangular civil water tank.

10. A water storage air conditioner using the water distribution system according to any one of claims 5 to 8, characterized in that: It comprises a water distribution system as claimed in any one of claims 5 to 8, a heat pump unit (11), an energy storage pump (12), an energy release pump (13), a heat exchanger (14), a first electric three-way valve (15), a second electric three-way valve (16), a third electric three-way valve (17) and a fourth electric three-way valve (18), wherein the heat pump unit (11) is connected to an upper water distributor (1) and a lower water distributor (2) respectively through a connecting pipe (4), and a water inlet pipe of the heat pump unit (11) is connected to a water inlet pipe of the heat pump unit (11). An energy storage pump (12) is provided, a first electric three-way valve (15) and a second electric three-way valve (16) are provided on the heat pump unit side of the energy storage water tank (3), the heat exchanger (14) is connected to the upper water distributor (1) and the lower water distributor (2) respectively through a connecting pipe (4), an energy release pump (13) is provided on the water inlet pipe of the heat exchanger (14), and a third electric three-way valve (17) and a fourth electric three-way valve (18) are provided on the heat exchanger side of the energy storage water tank (3).

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