Energy storage tank

Abstract

The utility model discloses an energy storage tank which comprises a tank body, a hot water connector and a cold water connector are arranged on the tank body, two symmetrically arranged water distributors are arranged in the tank body, the two water distributors are respectively close to the top and the bottom of the tank body, and each water distributor comprises a flow dividing pipe. First water distribution plates and a second water distribution plate are fixedly connected to the outer side of the flow dividing pipe, a storage area is formed between the two first water distribution plates, a plurality of water distribution holes are formed in the first water distribution plates in a penetrating mode, a plurality of partition plates are fixedly connected between the first water distribution plates and the second water distribution plate, and the partition plates are arranged around the outer side of the flow dividing pipe; a plurality of partition plates are arranged between the first water distribution plate and the second water distribution plate and divide a plurality of cavities between the first water distribution plate and the second water distribution plate, a plurality of first through holes are formed in the outer sides of the flow dividing pipes, the first through holes and the water distribution holes are communicated with the cavities, and the hot water connector and the cold water connector are communicated with the two flow dividing pipes respectively. The utility model provides an energy storage tank which is provided with a water distributor with an optimized structure, so that the mixing of low-temperature chilled water and high-temperature water is slowed down.

Description

Technical Field

[0001] This utility model relates to the field of hot and cold water energy storage technology, and in particular to an energy storage tank. Background Technology

[0002] In existing water-based cooling systems, to reduce equipment operating costs during off-peak hours when electricity prices are low, energy storage tanks are commonly used to store low-temperature chilled water prepared during off-peak hours for use during peak hours during the day. In existing technologies, energy storage tanks typically store low-temperature chilled water and reflux high-temperature water through a vertical natural stratification design, relying on the natural density difference between the two to maintain temperature stratification. This design has the advantages of simple structure, low cost, and ease of construction.

[0003] However, the design has significant flaws in actual operation. First, when the tank is filled or drained at high flow rates (such as during the daytime centralized use of chilled water), the interface between the low-temperature chilled water and the high-temperature water is disturbed by impact and mixes, forcing the system to consume additional electrical energy to recool in order to maintain the water temperature. Utility Model Content

[0004] The purpose of this invention is to provide an energy storage tank with an optimized water distributor to reduce the mixing of low-temperature chilled water and high-temperature water.

[0005] The technical solution adopted by the energy storage tank disclosed in this utility model is:

[0006] The device includes a tank with a hot water inlet and a cold water inlet. Inside the tank are two symmetrically placed water distributors, located near the top and bottom of the tank, respectively. Each water distributor includes a distribution pipe. A first water distribution plate and a second water distribution plate are fixedly connected to the outer side of the distribution pipe. A storage area is formed between the two first water distribution plates. Multiple water distribution holes are penetrating the first water distribution plate. Multiple partitions are fixedly connected between the first and second water distribution plates, arranged around the outer side of the distribution pipe. The partitions separate multiple cavities between the first and second water distribution plates. Multiple first through holes are opened on the outer side of the distribution pipe, communicating with the cavities. The hot water inlet and the cold water inlet are respectively connected to the two distribution pipes.

[0007] As a preferred embodiment, the outer side of the diversion pipe is provided with a plurality of second through holes, the first through hole being located between the second through hole and the first water distribution plate, and the diameter of the second through hole being larger than the diameter of the first through hole.

[0008] As a preferred embodiment, the tank body is provided with a through pipe, the hot water interface and the cold water interface are connected to the through pipe, and the through pipe is provided with a separator, which is located between the hot water interface and the cold water interface.

[0009] As a preferred embodiment, both ends of the diversion pipe are provided with flanges, one of the flanges of the diversion pipe is covered with a cover plate, and the other flange of the two diversion pipes is connected to both ends of the through pipe respectively.

[0010] The beneficial effects of the energy storage tank disclosed in this utility model are:

[0011] The water flow distribution is optimized by symmetrically arranged water distributors at the top and bottom of the tank. The two water distributors alternately distribute and pump water. When high-velocity water is injected into the water distributor through the hot water or cold water interface, the water flows through the diversion pipe and enters the cavity through the first through hole, and then diffuses evenly to the storage area through the water distribution hole. The resistance of the cavity buffers the water flow impact. The first and second water distribution plates limit the impact force of the water flow within the cavity. After buffering, the water flow gradually passes through the water distribution hole and enters the storage area, reducing the disturbance and mixing of the low-temperature chilled water and high-temperature water interface, maintaining the stability of water temperature stratification in the tank, and avoiding energy loss caused by the mixing of hot and cold water. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of an energy storage tank according to this utility model.

[0013] Figure 2 This utility model relates to an energy storage tank. Figure 1 (Area A) Enlarged view.

[0014] Figure 3 This is a schematic diagram of the water distributor structure of an energy storage tank according to this utility model.

[0015] Figure 4 This is a cross-sectional view of the water distributor of an energy storage tank according to this utility model.

[0016] Figure 5 This utility model relates to an energy storage tank. Figure 4 (Area B) Enlarged view.

[0017] Figure 6 This is a cross-sectional view of the water distributor of an energy storage tank according to this utility model. Detailed Implementation

[0018] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings:

[0019] Please refer to Figure 1 and Figure 2 .

[0020] The present invention discloses an energy storage tank, comprising a tank body 1.

[0021] The tank body 1 is provided with a hot water inlet 111 and a cold water inlet 112 on the outside. Both the hot water inlet 111 and the cold water inlet 112 penetrate into the interior of the tank body 1. The tank body 1 is provided with a through pipe 11. Both the hot water inlet 111 and the cold water inlet 112 are connected to the middle of the through pipe 11. The through pipe 11 is provided with a separator 113. The separator 113 is located between the hot water inlet 111 and the cold water inlet 112. The structure design of dividing the through pipe 11 into two independent flow channels by the separator 113 allows high-temperature water flow channel and low-temperature chilled water flow channel to be formed in the through pipe 11 when high-temperature water and low-temperature chilled water are injected through the hot water inlet 111 and the cold water inlet 112 respectively, effectively preventing the high-temperature water and low-temperature chilled water from mixing in the through pipe 11.

[0022] Furthermore, the top of the tank is covered with a cover plate, and a sealing ring is provided between the tank and the cover plate. The sealing ring can prevent cooling water from leaking from the gap between the tank and the cover plate. A drain valve is provided on the tank 1. The drain valve is close to the bottom of the tank 1 and is connected to the inside of the tank 1. By opening the drain valve, the water stored in the tank 1 can be drained, which facilitates the inspection and maintenance of the tank 1.

[0023] Please refer to Figure 1 and Figures 3-6 .

[0024] The tank 1 is equipped with two symmetrically placed water distributors 2, which are located near the top and bottom of the tank 1, respectively. In this embodiment, when the tank 1 contains liquid, the liquid level 12 in the tank 1 submerges the water distributor 2 located at the top of the tank 1, so that the function of the water distributor 2 in buffering the impact of the water flow is effective, and the connection between the tank and the cover plate is lower than the water distributor near the top of the tank.

[0025] The water distributor 2 includes a distribution pipe 21; both ends of the distribution pipe 21 are provided with flanges, and one of the flanges of the distribution pipe 21 is covered with a cover plate 211. The flange covered with the cover plate 211 is close to the inner wall of the tank body 1. This design allows the water distributor 2 to expand more interfaces. When the distribution pipe 21 does not need to install more interfaces, the cover plate 211 is used to seal one of the flanges; the other flange of the two distribution pipes 21 is connected to both ends of the through pipe 11 respectively. High temperature water is injected into the water distributor 2 located at the top of the tank body 1 through one end of the channel, and low temperature chilled water is injected into the water distributor 2 located at the bottom of the tank body 1 through the other end of the channel.

[0026] Furthermore, a first water distribution plate 22 and a second water distribution plate 23 are fixedly connected to the outside of the diversion pipe 21. The outer side of the first water distribution plate 22 touches the inner wall of the tank body 1, and a storage area is formed between the two first water distribution plates 22. The interface between high-temperature water and low-temperature chilled water is located in the storage area. The diameter of the first water distribution plate 22 is larger than the diameter of the second water distribution plate 23, so that the liquid in the tank body 1 can submerge the water distributor 2 located at the top of the tank body 1.

[0027] Furthermore, the first water distribution plate 22 has multiple water distribution holes 221 penetrating through it. The first water distribution plate 22 and the second water distribution plate are spaced a certain distance apart. Multiple partition plates 222 are fixedly connected between the first water distribution plate 22 and the second water distribution plate. In this embodiment, it is preferred that there are eight partition plates 222. The eight partition plates 222 are arranged at intervals around the outside of the diversion pipe 21. The eight partition plates 222 divide the first water distribution plate 22 and the second water distribution plate into eight cavities. The multiple water distribution holes 221 are evenly distributed in the eight cavities and communicate with the cavities.

[0028] The outer side of the diversion pipe 21 is provided with a plurality of first through holes 212. In this embodiment, it is preferred that there are eight first through holes 212, and the eight first through holes 212 correspond to eight cavities. The eight first through holes 212 are distributed in the eight cavities, and the diversion pipe 21 communicates with the cavities through the first through holes 212.

[0029] Furthermore, the outer side of the diversion pipe 21 is provided with a plurality of second through holes 213. In this embodiment, it is preferred that there are eight second through holes 213, which correspond to eight cavities. The eight second through holes 213 are distributed in the eight cavities, and the diversion pipe 21 communicates with the cavities through the second through holes 213. The first through hole 212 is located between the second through hole 213 and the first water distribution plate 22. The diameter of the second through hole 213 is larger than the diameter of the first through hole 212. Based on the diameter difference between the first through hole 212 and the second through hole 213, the water flow rate output by the second through hole 213 is made greater than that of the first through hole 212 through differential flow rate control. The jet of the second through hole 213 with a larger flow rate can reach the far end region of the cavity, while the jet of the first through hole 212 with a smaller flow rate covers the near end region of the cavity, thereby forming a gradient-compensated water flow distribution pattern and effectively improving the uniformity of water flow distribution in the cavity.

[0030] The connecting pipe and the two water distributors adopt a modular, split-structure design. During the installation of this energy storage tank, the water distributors near the bottom of the tank are first pre-assembled with the connecting pipes. Then, the two are placed inside the tank. Next, the hot water interface and the cold water interface are connected to the connecting pipes. Finally, after the water distributors near the top of the tank are installed, the sealing cover is assembled. This segmented installation process ensures equipment compatibility and allows for compatibility with irregularly shaped and dissimilar water distributors, effectively avoiding assembly interference problems caused by differences in the shape of water distributors in traditional integral structures.

[0031] When the energy storage tank is filled with high-temperature water:

[0032] High-temperature water is injected into the channel through hot water interface 111, while low-temperature chilled water is drawn from the channel through cold water interface 112. The high-temperature water is distributed through the water distributor 2 located at the top of the tank 1. The high-temperature water is injected into the cavity through the first through hole 212 and the second through hole 213. The resistance of the cavity is used to buffer the water flow impact. The first water distribution plate 22 and the second water distribution plate 23 limit the impact force of the water flow within the cavity. When the water flow speed slows down, it enters the storage area through the water distribution hole 221.

[0033] The water distributor 2 located at the bottom of the tank 1 simultaneously draws low-temperature chilled water from the storage area, causing the interface between high-temperature water and low-temperature chilled water to gradually decrease. When the water distributor 2 draws low-temperature chilled water, the low-temperature chilled water needs to pass through the water distribution hole 221 to enter the cavity, and then be introduced into the channel through the first through hole 212 and the second through hole 213. This can keep the siphon effect generated by the first through hole 212 and the second through hole 213 in the cavity, and reduce the disturbance and mixing of the interface between low-temperature chilled water and high-temperature water.

[0034] When the energy storage tank is filled with cryogenic chilled water:

[0035] Low-temperature chilled water is injected into the channel through the cold water interface 112, while high-temperature water is drawn from the channel through the hot water interface 111. The low-temperature chilled water is distributed through the water distributor 2 located at the bottom of the tank 1. The low-temperature chilled water is injected into the cavity through the first through hole 212 and the second through hole 213. The resistance of the cavity is used to buffer the water flow impact. The first water distribution plate 22 and the second water distribution plate 23 limit the impact force of the water flow within the cavity. When the water flow rate slows down, it enters the storage area through the water distribution hole 221.

[0036] The water distributor 2 located at the top of the tank 1 synchronously draws high-temperature water from the storage area, causing the interface between the high-temperature water and the low-temperature chilled water to gradually rise. When the water distributor 2 draws high-temperature water, the high-temperature water needs to pass through the water distribution hole 221 to enter the cavity, and then be introduced into the channel through the first through hole 212 and the second through hole 213. This can keep the siphon effect generated by the high-temperature water drawn by the first through hole 212 and the second through hole 213 in the cavity, and reduce the disturbance and mixing of the interface between the low-temperature chilled water and the high-temperature water.

[0037] This utility model provides an energy storage tank that optimizes water flow distribution through symmetrically arranged water distributors at the top and bottom of the tank. The two water distributors alternately distribute and pump water. When high-velocity water is injected into the water distributor through the hot or cold water interface, the water flows through the diversion pipe and enters the cavity through the first through hole, and then diffuses evenly to the storage area through the water distribution hole. The resistance of the cavity buffers the water flow impact. The first and second water distribution plates limit the impact force of the water flow within the cavity. After buffering, the water flow gradually passes through the water distribution hole into the storage area, reducing the disturbance and mixing of the low-temperature chilled water and high-temperature water interface, maintaining the stability of water temperature stratification in the tank, and avoiding energy loss caused by the mixing of hot and cold water.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. An energy storage tank, characterized in that, The device includes a tank body, which is provided with a hot water inlet and a cold water inlet. Inside the tank body are two symmetrically placed water distributors, which are located near the top and bottom of the tank body, respectively. The water distributor includes a diversion pipe, a first water distribution plate and a second water distribution plate are fixedly connected to the outside of the diversion pipe, a storage area is formed between the two first water distribution plates, a plurality of water distribution holes are penetrating the first water distribution plate, a plurality of partitions are fixedly connected between the first water distribution plate and the second water distribution plate, the plurality of partitions are arranged around the outside of the diversion pipe, the plurality of partitions divide the first water distribution plate and the second water distribution plate into a plurality of cavities, and a plurality of first through holes are opened on the outside of the diversion pipe, the first through holes and the water distribution holes are all connected to the cavities; The hot water interface and the cold water interface are respectively connected to two branch pipes.

2. An energy storage tank as described in claim 1, characterized in that, The outer side of the diversion pipe is provided with a plurality of second through holes, the first through hole being located between the second through hole and the first water distribution plate, and the diameter of the second through hole being larger than the diameter of the first through hole.

3. An energy storage tank as described in claim 2, characterized in that, The tank is equipped with a through pipe, and the hot water interface and the cold water interface are connected to the through pipe. The through pipe is equipped with a separator, which is located between the hot water interface and the cold water interface.

4. An energy storage tank as described in claim 3, characterized in that, Both ends of the diversion pipe are provided with flanges, one of the flanges of the diversion pipe is covered with a cover plate, and the other flange of the two diversion pipes is connected to both ends of the through pipe respectively.

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