CN211119827U

CN211119827U - Water distributor for energy storage tank and energy storage tank

Info

Publication number: CN211119827U
Application number: CN201922250637.7U
Authority: CN
Inventors: 唐梦辰; 李喆; 葛然
Original assignee: Beijing Etechwin Electric Co Ltd
Current assignee: Beijing Etechwin Electric Co Ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-07-28
Anticipated expiration: 2029-12-13

Abstract

The utility model provides a water-locator and energy storage tank for energy storage tank. The water-locator includes: the water diversion part comprises a water diversion disc and a plurality of water diversion pipes radially and outwards extending from the water diversion disc; the water distribution pipes are annularly arranged around the water distribution disc and communicated with the water distribution pipes in the circumferential direction, and each water distribution pipe is provided with a first vertical side wall and a second vertical side wall which are mutually separated in the extending direction of the water distribution pipe, the first vertical side wall is provided with a plurality of rows of through holes, and the second vertical side wall is provided with a plurality of rows of through holes, so that liquid can flow out or flow into the water distribution pipes in a multi-layer mode in the height direction along the horizontal direction. Through adopting the basis the utility model discloses a water-locator can realize the rivers of the less multilayer form of disturbance between the layer to the rivers of multilayer form are more even more fine and close, and the velocity of flow is more slow and the inflow outflow is big.

Description

Water distributor for energy storage tank and energy storage tank

Technical Field

The application relates to the technical field of energy storage air conditioning systems, in particular to a water distributor for an energy storage tank and the energy storage tank.

Background

The energy storage air conditioning system starts an air conditioning unit to refrigerate or heat in a power utilization valley period or a cheap power period (for example, at night), and partial or all of cold or heat required by buildings or production and the like is prepared and stored in the form of low-temperature liquid or high-temperature liquid. In the prior art, a storage tank is usually used to store high-temperature liquid or low-temperature liquid, so that during a peak period of electricity utilization or a high-price electricity period, stored cold can be released from the low-temperature liquid or stored heat can be released from the high-temperature liquid, so as to meet the cooling or heating requirements of buildings or production and the like. By doing so, a large amount of operating expenses of the air conditioning system can be saved and the overload of the power grid caused during the peak period of power utilization can be avoided.

The liquid used to store cold or heat in an energy storage air conditioning system is typically water. The natural water temperature layering method is an energy storage mode which is used by the existing energy storage air conditioning system more. The natural water temperature stratification method is based on the principle that water has different densities at different temperatures, so that natural stratification is generated between cold water and hot water. The phenomenon of 'cold down and hot up' is inevitably existed in the storage tank without stirring, so that the mechanism can be utilized to construct a natural layered energy storage tank with a cold water region at the bottom and a warm water region at the top in the storage tank. Because of simple structure and convenient control, the natural layered energy storage tank becomes a key part of an energy storage air conditioning system.

The energy storage capacity (i.e., cold storage capacity or heat storage capacity) and the energy storage and release efficiency (i.e., cold storage and release efficiency or heat storage and release efficiency) of an energy storage air conditioning system depend on the supply and return water temperature difference in the energy storage tank and the effective stratification of the water temperature in the energy storage tank. The main factor influencing the effective stratification of the water body temperature is the flow mode of water flowing into the energy storage tank or flowing out of the energy storage tank through the water distributor, so the design of the water distributor in the energy storage tank is critical.

In addition, in situations where it is desirable to keep the ambient temperature stable (e.g., data rooms/centers), the storage air conditioning system is required to operate continuously. However, when the energy storage air conditioning system stops operating due to a power failure, the conventional energy storage air conditioning system cannot rapidly meet the cooling or heating requirement after the standby power supply (e.g., a diesel generator, etc.) is switched on and cannot meet the cooling or heating requirement before the standby power supply is switched on and the energy storage air conditioning system is stably operated because the water distribution rate of the water distributor is slow and the water distribution efficiency is low.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims to provide a water distributor with higher water distribution efficiency.

An object of the utility model is to provide a can realize the quick energy storage tank of holding cold or holding exothermic.

According to an aspect of the utility model provides a water-locator for energy storage tank, the water-locator includes: the water diversion part comprises a water diversion disc and a plurality of water diversion pipes radially and outwards extending from the water diversion disc; the water distribution pipes are annularly arranged around the water distribution disc and communicated with the water distribution pipes in the circumferential direction, and each water distribution pipe is provided with a first vertical side wall and a second vertical side wall which are mutually separated in the extending direction of the water distribution pipe, the first vertical side wall is provided with a plurality of rows of through holes, and the second vertical side wall is provided with a plurality of rows of through holes, so that liquid can flow out or flow into the water distribution pipes in a multilayer mode along the horizontal direction in the height direction.

In some embodiments, the water distributor may be provided in plurality, and the plurality of water distributors may be arranged at intervals in the extending direction of the water distributor, thereby forming a multi-layer net-shaped water distribution wall.

In some embodiments, for each water distributor, the two adjacent rows of through holes on each of the first and second vertical sidewalls may be staggered, and/or the through holes on the first vertical sidewall and the through holes on the second vertical sidewall may be offset from each other in the horizontal and height directions.

In some embodiments, the water distributor may extend upward by a predetermined height with respect to the water distributor, the height of the water distributor may be more than 5 times the width of the water distributor, and the lower end of the water distributor may communicate with the plurality of water distributors.

In some embodiments, the knock out plate may be formed as a flat disc shape and have a correspondingly shaped inner cavity, and the opening may be formed on a bottom surface of the knock out plate.

In some embodiments, the plurality of knock out pipes may be arranged in the same horizontal plane at the same angular intervals from the outer circumference of the knock out plate.

In some embodiments, each water distributor may have a circular ring shape, and the plurality of water distributors may be arranged at equal intervals in an extending direction of the water distributor.

In some embodiments, the diverter tray and the plurality of diverter tubes may be arranged in a common plane, and the first vertical sidewall and the second vertical sidewall may extend vertically upward and may include an angle in a range of 80-100 degrees from the plane.

According to the utility model discloses an on the other hand still provides an energy storage tank, and the energy storage tank includes: a tank body; and two water distributors as described above, one of which is suspended from the upper part of the tank and the other of which is supported on the bottom of the tank.

In some embodiments, the water distributor pipes of the one water distributor and the water distributor pipes of the other water distributor face away from each other.

By adopting the water distributor, the multilayer water flow with small interlayer disturbance can be realized, the multilayer water flow is more uniform and finer, the flow velocity is slower, and the inflow and outflow water amount is large, so that the multilayer water flow has less disturbance to the water body around the water distributor and the water collecting and distributing speed can be improved. When the water distributor is used in an energy storage tank of an energy storage air conditioning system, cold water and warm water in the energy storage tank can be gently mixed as much as possible, the height of a thermocline is reduced, the mutual independence and effective separation of the cold water and the warm water in and out are ensured, and the cold storage and heat storage efficiency and the cold discharge and heat release efficiency of the energy storage air conditioning system can be improved, so that the energy storage air conditioning system can be applied to occasions needing to keep the ambient temperature stable or occasions needing to rapidly store, discharge and release cold (such as a data machine room/center).

Drawings

The above and other objects, features and advantages of the present invention will be more clearly understood when the following detailed description is taken in conjunction with the accompanying drawings, in which:

fig. 1 is a bottom view of a water distributor according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the water distributor taken along line A-A in FIG. 1;

FIG. 3 is a cross-sectional view of the water distributor taken along line B-B in FIG. 1;

figure 4 is an expanded view of a first vertical sidewall of a water distributor according to an embodiment of the present invention;

fig. 5 is a cross-sectional view of an energy storage tank including two water distributors, according to an embodiment of the present invention;

fig. 6 is a bottom view of the energy storage sump looking up from the intermediate position of the canister in fig. 5.

The reference numbers illustrate:

10: water cut portion, 11: water diversion disc, 111: opening, 12: shunt pipe, 20: water distributor, 21 a: first vertical side wall, 21 b: second vertical side wall, 211a, 211 b: through hole, 22: top wall, 23: bottom wall, 30: can body, 40: and (4) supporting and hanging the frame.

Detailed Description

Embodiments in accordance with the present invention will now be described in detail with reference to the drawings, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

Fig. 1 is a bottom view of a water distributor according to an embodiment of the present invention, fig. 2 is a sectional view of the water distributor taken along line a-a in fig. 1 and fig. 3 is a sectional view of a water distribution pipe taken along line B-B in fig. 1. As shown in fig. 1 to 3, the water distributor includes: the water diversion part 10 comprises a water diversion disc 11 and a plurality of water diversion pipes 12 radially and outwards extending from the water diversion disc 11; and water distribution pipes 20 arranged annularly around the water distribution tray 11 and communicating with the water distribution pipes 12 in the circumferential direction, the water distribution pipes 20 having first and second

vertical side walls

21a and 21b spaced from each other in the extending direction of the water distribution pipes 12, the first vertical side wall 21a being provided with a plurality of rows of through holes 211a and the second vertical side wall 21b being provided with a plurality of rows of through holes 211b, so that the liquid can flow out of or into the water distribution pipes 20 in a multi-layer manner in the height direction in the horizontal direction.

According to the water distributor of the present invention, the water distribution pipe 20 extends upward from the water distribution portion 10 by a predetermined height to form an annular flat pipe having a height greater than a width (i.e., a width in a horizontal direction in fig. 2). The rows of through-holes 211a on the first vertical sidewall 21a and the rows of through-holes 211b on the second vertical sidewall 21b of the water distribution pipes 20 may be distributed along the height direction and the length direction of the water distribution pipes 20 so that the water in the water distribution pipes 20 can flow in all directions in the horizontal direction.

The water distribution form of the traditional water distribution system is mostly single-layer form water outlet, the single-layer flow rate of the water distribution form is large, and the disturbance to the water body in the energy storage tank is large. However, according to the utility model discloses a water distributor sets up multirow through-

hole

211a and 211b along the direction of height on the first vertical lateral wall 21a of water distributor 20 and the vertical lateral wall 21b of second for water can divide into multilayer rivers in the direction of height, and the single strand rivers flow is little, and the disturbance between the multilayer rivers is less, and is less to the disturbance of the water in the energy storage tank. In addition, the water flow in the multilayer form is more uniform and fine, the flow speed is slower, and the inflow and outflow water quantity is large, so that the disturbance of the water flow in the multilayer form to the water body around the water distributor in the energy storage tank is smaller, and the water collecting and distributing speed can be improved.

When according to the utility model discloses a water-locator is used in energy storage air conditioning system's energy storage tank, can make the inside cold water of energy storage tank and warm water blend as far as possible mildly and reduce the thermocline height, still can improve energy storage air conditioning system's cold-storage heat accumulation efficiency and put cold heat release efficiency to energy storage air conditioning system can be applied to the occasion that needs quick storage and release cold, heat accumulation (for example, data computer lab/center).

The structure of the water distributor is described in more detail below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the tapping disk 11 of the tapping portion 10 may be formed as a flat disk shape and have a correspondingly shaped inner cavity. An opening 111 may be formed on the water diversion tray 11, and the opening 111 communicates with an external pipe through which liquid may be delivered to the water diversion tray 11 or discharged from the water diversion tray 11. Specifically, the opening 111 may be formed on the bottom surface of the water diversion tray 11. The plurality of distribution pipes 12 extend radially outward from the outer circumference of the distribution tray 11 (for example, extend in the radial direction of the distribution tray 11 having a disk shape), and the distribution pipe 20 communicates with each distribution pipe 12 to guide the plurality of liquid flows flowing in the radial direction to flow in the circumferential direction. Preferably, the plurality of distribution pipes 12 are arranged in the same horizontal plane at the same angular intervals from the outer circumference of the disk-shaped distribution disk 11 and have the same length, which makes the water collection and distribution of the water distributing part 10 more uniform and less disturbance to the water body around the water distributor. An example of a water distributor having eight knock out pipes 12 is shown in figure 1. However, embodiments in accordance with the present disclosure are not limited in this regard, the number of knock out pipes 12 may be greater or less than the number of knock out pipes 12 shown in the figures, the shape of knock out tray 11 is not limited to a circular disc, and knock out pipes 12 may be non-uniformly distributed about the periphery of knock out tray 11 (e.g., some or all of knock out pipes 12 may be non-uniformly distributed about the periphery of knock out tray 11).

Further, each of the knock out pipes 12 communicates at its inner end in the extending direction with the knock out pan 11, and is closed at its outer end in the extending direction. Each of the knock out pipes 12 has one or more ports aligned along the direction of extension, and each of the knock out pipes 12 communicates with the distributor 20 through the ports. The number of ports per manifold 12 is the same as the number of manifolds 20. The water can flow into or out of the water distributor through the rows of through

holes

211a and 211b, so that water can flow into or out of the water distributor in smaller water flow under the condition of water collection or water distribution, and the disturbance to the water in the energy storage tank is smaller.

As shown in fig. 1 to 3, as a preferred embodiment, the water distributor 20 extends upward to a predetermined height relative to the water distributor 12 to form a flat circular ring-shaped pipe, and the height of the flow channel formed by the circular ring-shaped pipe is several times of the width of the flow channel, for example, the height of the flow channel may be more than 5 times of the width of the flow channel (likewise, the height of the water distributor 20 is more than 5 times of the width of the water distributor 20). The lower end of the water distribution pipe 20 is communicated with a plurality of water distribution pipes 12. The water distributor 20 may include a first vertical sidewall 21a and a second vertical sidewall 21 b. The first and second

vertical sidewalls

21a and 21b extend upward from the outer circumferential surface of the cutwater pipe 12 and are spaced apart from each other in the extending direction of the cutwater pipe 12 by a predetermined distance corresponding to the width of the flow passage in the water distributor pipe 20. A plurality of rows of through-holes 211a are formed on the first vertical sidewall 21a of the water distribution pipe 20, and a plurality of rows of through-holes 211b are formed on the second vertical sidewall 21b of the water distribution pipe 20. In addition, the water distributor 20 may further include: a top wall 22 connecting top ends of the first vertical side wall 21a and the second vertical side wall 21 b; and a bottom wall 23 connecting bottom ends of the first and second

vertical sidewalls

21a and 21 b. Although the water distribution tubes 20 are shown in fig. 3 as having a rectangular cross-sectional shape, embodiments of the present invention are not limited thereto, and the water distribution tubes 20 may have any suitable cross-sectional shape. Further, the relationship between the height of the water distributor 20 and the width of the water distributor 20 is not limited to 5 times or more, and the height and width of the water distributor 20 may be selected according to the height and diameter of the energy storage tank to which the water distributor is applied, and may be, for example, 3 times or more, 4 times or more, 6 times or more, 8 times or more, and the like.

According to the utility model discloses a water-locator, in the extending direction of distributive pipe 12, can the interval arrangement a plurality of water-locator 20 to form the netted water distribution wall of multilayer. As shown in fig. 1, the water distributor according to an embodiment of the present invention may have a circular shape and include three water distribution pipes 20 spaced apart from each other in a radial direction. For example, three distributor pipes 20 are equally spaced from each other along the extension of the distributor pipe 12. However, embodiments according to the present invention are not limited thereto, and the water distributor may also include more or less water distribution pipes 20 than the number of water distribution pipes 20 shown in fig. 1. In case the water distributor comprises a plurality of water distribution pipes 20, the plurality of water distribution pipes 20 may be spaced non-equidistantly apart, in addition to being equally spaced like the three water distribution pipes 20 in fig. 1.

In addition, it is shown in fig. 1 that each water distributor 20 has a circular ring shape, so that the parts of the same water distributor 20 are equidistant from the disc-shaped water distribution tray 11. However, the water distributor 20 and the water diversion tray 11 may have other shapes (for example, polygonal shapes) and the water distributor 20 and the water diversion tray 11 may have different shapes according to embodiments of the present invention are not limited thereto. Furthermore, the distributor pipes 20 can also be arranged eccentrically with respect to the distributor disk 11.

Further, for each water distribution pipe 20, two adjacent rows of through holes on each of the first vertical side wall 21a and the second vertical side wall 21b may be staggered (as shown in fig. 4, in the first vertical side wall 21a, a plurality of rows of through holes 211a are staggered in a quincunx shape, that is, two adjacent rows of through holes 211a arrayed in the vertical direction are staggered from each other in the vertical direction). Further, the through holes on each of the first and second

vertical sidewalls

21a and 21b may also be regularly arranged or irregularly arranged in other ways in the height direction and the length direction (specifically, the height direction and the length direction in fig. 4). In addition, the through holes 211a on the first vertical sidewall 21a may be offset from the through holes 211b on the second vertical sidewall 21b in the horizontal direction and the height direction, which means that each row of the through holes 211a of the first vertical sidewall 21a and each row of the through holes 211b of the second vertical sidewall 21b do not overlap with each other in the horizontal direction. The first and second

vertical sidewalls

21a and 21b may be made of a stainless steel plate material, and the through

holes

211a and 211b may be formed by punching the stainless steel plate material. In addition, it is clear that the arrangement of the through holes 211a of the first vertical sidewall 21a shown in fig. 4 is also applicable to the through holes 211b of the second vertical sidewall 21 b.

The water distribution pipes 20 are arranged in a plurality of radial directions of the circular water distributor to form a plurality of layers of radial netted water distribution walls, and the inner side and the outer side of each layer of netted water distribution wall are respectively provided with a plurality of rows of water inlet (outlet) holes (namely, through holes 211a and through holes 211b) which are arranged in a staggered manner, so that water flows in multiple radial directions, water outlet holes are fine and dense, single-stranded water flow is small, the water flows in the energy storage tank in a laminar flow manner, and the water disturbance in the energy storage tank is small.

In an embodiment according to the present invention, the distributor pipe 20 and the distributor pipe 12 are arranged in a crossing manner. In the distributor, it is preferred that the plurality of distributor pipes 12 and the distributor tray 11 are arranged in the same plane, and the first vertical side wall 21a and the second vertical side wall 21b of the distributor pipe 20 are perpendicular to the plane. In this case, when the water distributor is installed in the tank 30 (described in detail below) of the storage tank, if the water distribution pipe 12 is installed in such a manner that the extension direction of the water distribution pipe 12 is parallel to the liquid level and the first and second

vertical sidewalls

21a and 21b are installed in the vertical direction, the direction in which water flows into or out of the through

holes

211a and 211b of the water distribution pipe 20 is the horizontal direction (parallel to the liquid level), which makes the disturbance of water flowing into or out of the water distribution pipe 20 to the water around the water distributor minimal. However, the water distributor of the present invention is not limited thereto, and the first vertical sidewall 21a and the second vertical sidewall 21b of the water distributor 20 may be slightly inclined with respect to the vertical direction, and the included angle between the planes of the plurality of water distribution pipes 12 and the water distribution tray 11 may be between 80 ° and 100 ° (e.g., 85 °, 95 °, or 105 °).

In the embodiment of the present invention, each water distributor 20 can communicate with all the water distributors 12, so that the water distributor 11 can collect the water from a plurality of water distributors 12 (specifically, the water flowing into the water distributor 20 from the through

holes

211a and 211b and then flowing into the water distributors 12) or the water entering the water distributor 11 through the opening 111 is distributed to a plurality of water distributors 12 and then flows out of the water distributor 20 through the through

holes

211a and 211b, thereby improving the efficiency and uniformity of water collection and distribution. However, embodiments according to the present disclosure are not limited thereto, and the distributor 20 may communicate with two or more of the distribution pipes 12 rather than with all of the distribution pipes 12. Preferably, the distribution pipes 12 communicating with the distribution pipes 20 are uniformly distributed with respect to the outer circumference of the distribution tray 11 so that water is more uniformly and rapidly dispersed around the distributor or is more rapidly collected around the distributor.

From the above description, it is clear to those skilled in the art that the water distributor according to the embodiment of the present invention as described above can be used for an energy storage tank of an energy storage air conditioning system.

Specifically, as shown in fig. 5, the energy storage tank includes a tank 30 and two water distributors as described above, wherein one water distributor (hereinafter, referred to as a "first water distributor") is suspended from an upper portion of the tank 30 and the other water distributor (hereinafter, referred to as a "second water distributor") is supported on a bottom of the tank 30. In the case where the first water distributor and the second water distributor are installed inside the tank 30, the level of water in the tank 30 is higher than that of the first water distributor, and the water distributors are spaced apart from the inner surface of the tank 30 (as shown in fig. 6).

Preferably, the water distributor pipes 20 of the first water distributor and the water distributor pipes 20 of the second water distributor face away from each other, that is, the water distributor pipes 20 of the first water distributor are located above the water distributor pipes 12, and the water distributor pipes 20 of the second water distributor are located below the water distributor pipes 12. By installing the first water distributor and the second water distributor in such a way that the water distribution areas of the two water distributors are separated as far as possible, the influence of water flowing into and out of one water distributor on the other water distributor is reduced as much as possible, and the disturbance of water flowing into and out of the water distributors on the water in the tank 30 can be further reduced.

In addition, the first water distributor may be suspended from the upper portion of the tank 30 by the support hanger 40, and the second water distributor may be supported on the bottom of the tank 30 by the support hanger 40.

Due to the natural layering of the water temperatures, the water in the tank 30 will have a condition of cold-down and hot-up, so the working process of water collection of the first water distributor and water distribution of the second water distributor can be used in a cold storage mode or a heat release mode of the energy storage tank, and the working process of water distribution of the first water distributor and water collection of the second water distributor can be used in a heat storage mode or a cold release mode of the energy storage tank. Specifically, in the working process of water collection of the first water distributor and water distribution of the second water distributor, water in the tank 30 flows through the water distribution pipes 20 of the first water distributor, the water distribution pipes 12 of the first water distributor, the water distribution disk 11 of the first water distributor, the heat exchange device of the energy storage air conditioning system, the water distribution disk 11 of the second water distributor, the water distribution pipes 12 of the second water distributor and the water distribution pipes 20 of the second water distributor in sequence. The water flow sequence of the working process of the first water distributor for water diversion and the working process of the second water distributor for water diversion is opposite to that of the working process of the first water distributor for water diversion and the working process of the second water distributor for water diversion, and redundant description is not provided here.

Although the water distributor is described above as an example of an energy storage tank for an energy storage air conditioning system, the present invention is not limited thereto, and the water distributor may be used in other application scenarios where water needs to be distributed evenly or quickly into a large space. In addition, although the fluid in the energy storage tank is described in terms of water, the fluid used in the energy storage tank of the energy storage air conditioning system is not limited to water, but may be any fluid that is capable of achieving natural stratification as a function of fluid temperature.

Through adopting above-mentioned water-locator, can realize the rivers of the less multilayer form of disturbance between the layer to the rivers of multilayer form are more even more fine and close, and the velocity of flow is slower and inflow outflow water volume is big, therefore the rivers of multilayer form are less to the disturbance of the water around the water-locator and can improve the speed of water collection and distribution. When the water distributor is used in an energy storage tank of an energy storage air conditioning system, cold water and warm water in the energy storage tank can be gently mixed as much as possible, the height of a thermocline is reduced, the mutual independence and effective separation of the cold water and the warm water in and out are ensured, and the cold storage efficiency, the heat storage efficiency and the cold release efficiency of the energy storage air conditioning system can be improved, so that the energy storage air conditioning system can be applied to occasions needing to keep the ambient temperature stable or occasions needing to quickly store, release and release cold and heat (such as a data machine room/center), so that the cooling demand or the heating demand can be quickly met after the energy storage air conditioning system is switched into a standby power supply (such as a diesel generator) due to power failure, and the reliability of the energy. In addition, under the condition that energy storage air conditioning system is used for keeping the temperature stability of data computer lab/center, owing to have according to the utility model discloses an energy storage tank of water-locator has higher cold efficiency of holding and releasing and holds the discharge efficiency, consequently when the power failure trouble takes place, energy storage air conditioning system can cut into the emergency power source (can not be used for supplying power for energy storage air conditioning system for a long time) at data computer lab/center immediately to satisfy the cooling or heat supply demand before cutting into stand-by power supply and making energy storage air conditioning system steady operation.

Although a few embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims

1. A water distributor for an energy storage sump, the water distributor comprising:

the water diversion device comprises a water diversion part (10), wherein the water diversion part (10) comprises a water diversion disc (11) and a plurality of water diversion pipes (12) radially and outwards extending from the water diversion disc (11); and

the water distribution pipe (20) is annularly arranged around the water distribution disc (11) and is communicated with the water distribution pipes (12) in the circumferential direction, the water distribution pipe (20) is provided with a first vertical side wall (21a) and a second vertical side wall (21b) which are mutually separated in the extending direction of the water distribution pipes (12), and a plurality of rows of through holes (211a) are formed in the first vertical side wall (21a) and a plurality of rows of through holes (211b) are formed in the second vertical side wall (21b) so that liquid can flow out of or into the water distribution pipe (20) in a multi-layer mode in the height direction along the horizontal direction.

2. The water distributor for an energy storage tank according to claim 1, wherein the number of the water distribution pipes (20) is plural, and the plural water distribution pipes (20) are arranged at intervals in the extending direction of the water distribution pipe (12), thereby forming a multi-layer net-shaped water distribution wall.

3. The water distributor for an energy storage tank according to claim 2, characterized in that for each of the water distribution pipes (20), two adjacent rows of through-holes on each of the first vertical side wall (21a) and the second vertical side wall (21b) are staggered and/or

The through holes (211a) on the first vertical side wall (21a) and the through holes (211b) on the second vertical side wall (21b) are mutually staggered in the horizontal direction and the height direction.

4. The water distributor for an energy storage sump according to claim 1, wherein the water distributor (20) extends upwardly with respect to the water distributor (12) by a predetermined height, the height of the water distributor (20) being more than 5 times the width of the water distributor (20), and the lower ends of the water distributor (20) communicate with the plurality of water distributors (12).

5. The water distributor for an energy storage tank as claimed in claim 4, characterized in that the water distributor (11) is formed as a flat disc and has a correspondingly shaped inner space, and an opening (111) is formed in the bottom surface of the water distributor (11).

6. The water distributor for an energy storage tank according to claim 5, characterized in that the plurality of water distribution pipes (12) are arranged in the same horizontal plane at the same angular intervals from the outer circumference of the water distribution tray (11).

7. The water distributor for an energy storage sump according to claim 2, wherein each of the water distributors (20) has a circular ring shape, and the plurality of water distributors (20) are arranged at equal intervals in the extending direction of the water distribution pipe (12).

8. The water distributor for an energy storage sump according to claim 1, wherein the water distribution tray (11) and the plurality of water distribution pipes (12) are arranged in the same plane, and the first vertical side wall (21a) and the second vertical side wall (21b) extend vertically upwards and have an angle in the range of 80 ° to 100 ° with respect to the plane.

9. An energy storage sump, comprising:

a tank (30); and

the water distributor of any of the two claims 1 to 8, one of the two water distributors being suspended in the upper part of the tank (30) and the other of the two water distributors being supported on the bottom of the tank (30).

10. An energy storing sump according to claim 9, characterised in that the water distributor pipes (20) of the one and the other are facing away from each other.