Balanced water distribution natural layering type water energy storage tank

Abstract

The utility model discloses a balanced water distribution natural layering type water energy storage tank which comprises a tank body, two main water pipes, two water distributors, two water distributors and two flow stabilizing devices, and inlets of the two water distributors are communicated with one ends of the two main water pipes respectively; inlets of the two water distributors are respectively communicated with outlets of the two water distributors; and the two flow stabilizing devices are fixed in the tank body and are respectively positioned between the corresponding water distributors and the corresponding water segregators. The natural layering type water energy storage tank device with the balanced water distribution has the advantages that the dense first flow guide round holes are formed in the first flow equalizing plate, the water flow speed can be balanced, excessive local water flow disturbance is avoided, the second flow guide round holes in the second flow equalizing plate and the first flow guide round holes in the first flow equalizing plate are arranged in a staggered mode, and the water flow speed can be balanced. Water flow disturbance can be further weakened, so that thermocline thickening caused by the fact that high-temperature water introduced from the main water pipe directly impacts the thermocline is reduced, energy storage efficiency is improved, and energy loss is reduced.

Description

Technical Field

[0001] The utility model relates to the field of water energy storage, in particular to a water energy storage tank with balanced water distribution and natural stratification. Background Art

[0002] Hydroelectric energy storage is the process of storing cold / heat in a storage tank through a chiller / heat pump unit when the power load is low (usually at night). During peak power periods, the chiller / heat pump unit is not used or is used less frequently, and the energy storage device is fully utilized to provide cooling / heating, thereby achieving the purpose of shifting power peaks to fill valleys and saving operating costs.

[0003] Naturally stratified water storage tanks are a widely used type of water storage device. The water in a naturally stratified water storage tank naturally stratifies according to its density. When the water temperature is greater than 4°C, the lower water density is greater and is located at the bottom of the tank, while the higher water density is less and is located at the top of the tank.

[0004] During the charging or discharging process, the impact of water distribution on the water temperature stratification within the tank is a key factor affecting the performance of the energy storage tank. Currently, commonly used water distributors are octagonal and disc-shaped. However, during water distribution, octagonal and disc-shaped water distributors cause more severe localized water flow disturbances near the diffuser orifices. This water flow disturbance thickens the thermocline layer, reducing the water storage effect. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a water storage tank with balanced water distribution and natural stratification, so as to solve the technical problems in the prior art that when distributing water, the local water flow disturbance in the vicinity of the diffuser orifices of the octagonal and disc-shaped water distributors is relatively severe, the water flow disturbance causes the inclined temperature layer to thicken, and the water storage effect is reduced.

[0006] In order to achieve the above technical purpose, the present invention adopts the following technical solutions:

[0007] The utility model provides a balanced water distribution naturally stratified water storage tank, comprising:

[0008] Tank;

[0009] two main water pipes;

[0010] Two water distributors, the inlets of the two water distributors are respectively connected to one end of the two main water pipes;

[0011] Two water distributors, the inlets of the two water distributors are respectively connected to the outlets of the two water dividers; and

[0012] Two flow stabilizing devices, both of which are fixed in the tank body and respectively located between the corresponding water distributor and the corresponding water divider, both of which include a first flow balancing plate and a second flow balancing plate, the first flow balancing plate is evenly distributed with a number of first flow guide circular holes, the second flow balancing plate is evenly distributed with a number of second flow guide circular holes, and the first flow guide circular holes and the second flow guide circular holes are staggered.

[0013] In some embodiments, a drain port and an overflow port communicating with the accommodating cavity are provided on the side wall of the tank body.

[0014] In some embodiments, the inlet of the water separator is perpendicular to the outlet of the water separator.

[0015] In some embodiments, the two main water pipes are respectively an upper main water pipe and a lower main water pipe, and the two water dividers are respectively an upper water divider and a lower water divider. The upper water divider has an inlet and multiple outlets, and the inlet of the upper water divider is connected to one end of the upper main water pipe. The lower water divider has an inlet and multiple outlets, and the inlet of the lower water divider is connected to one end of the lower main water pipe.

[0016] In some embodiments, the water distributor is composed of one or more circles of diffuser pipes, and each two adjacent circles of diffuser pipes are connected by a number of diffuser connecting pipes. The diffuser pipes are provided with diffuser orifices, and the diameter and arrangement spacing of the diffuser orifices on each circle of diffuser pipes are equal.

[0017] In some embodiments, two groups of distribution pipes are further included, and the distribution pipes are used to achieve communication between the inlet of the corresponding water distributor and the outlet of the corresponding water distributor.

[0018] In some embodiments, both groups of distribution pipes include a number of distribution main pipes and a number of distribution branch pipes. The number of the distribution main pipes is equal to and corresponds one-to-one to the number of outlets of the water distributor. The number of the distribution main pipes is half the number of circles of the diffuser pipes. One end of the distribution main pipe is connected to the corresponding outlet of the water distributor, and the other end of the distribution main pipe is connected to the inlet of the distribution branch pipe. The distribution branch pipes are arranged in a branch shape and have multiple discharge holes. The multiple discharge holes of the distribution branch pipes are respectively connected one-to-one to multiple diffuser connecting pipes.

[0019] In some embodiments, the outer diameters of the first flow balancing plate and the second flow balancing plate are equal and no less than 90% of the inner diameter of the tank.

[0020] In some embodiments, the first current balancing plate and the second current balancing plate are arranged at a distance of 100-300 mm.

[0021] In some embodiments, the diameters of each first guide circular hole and each second guide circular hole are equal, the lateral spacing between two adjacent first guide circular holes and two adjacent second guide circular holes is 1.25 times the diameter of the first guide circular hole, and the longitudinal spacing between two adjacent first guide circular holes and two adjacent second guide circular holes is 2 times the diameter of the first guide circular hole.

[0022] Compared with the prior art, the beneficial effect of the balanced water distribution and natural stratification water storage tank device provided by the utility model is: by arranging a flow stabilizing device in the tank body, when water enters the tank body from the water distributor, it will squeeze the original water in the tank body so that it flows downward through the first flow equalizing plate or the higher temperature water introduced from the upper main water pipe will directly flow downward through the first flow equalizing plate. Because the first flow equalizing plate is densely arranged with first guide holes, the water flow velocity can be balanced to avoid excessive local water flow disturbance. The second guide holes on the second flow equalizing plate and the first guide holes on the first flow equalizing plate are staggered, which can further weaken the water flow disturbance, thereby reducing the direct impact of the higher temperature water introduced from the main water pipe on the temperature gradient layer, causing the temperature gradient layer to thicken, so as to achieve the effect of weakening the impact of the water distribution flow on the water temperature stratification in the tank when charging or releasing cold, reducing the influence of the water distribution flow on the original water temperature stratification in the tank, improving energy storage efficiency, and reducing energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of a balanced water distribution naturally stratified water storage tank provided by one embodiment of the utility model;

[0024] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the balanced water distribution and natural stratification water storage tank after omitting the tank body;

[0025] Figure 3 yes Figure 1 Schematic diagram of the three-dimensional structure of the water divider;

[0026] Figure 4 yes Figure 1 A schematic diagram of the structure of a water distributor;

[0027] Figure 5 yes Figure 4 A partial enlarged view of the middle area A;

[0028] Figure 6 yes Figure 2 A partial enlarged view of the middle area B;

[0029] Figure 7 yes Figure 6 A top view of the first current equalizing plate in FIG;

[0030] Figure 8 yes Figure 6 A top view of the second current equalizing plate in FIG;

[0031] Explanation of the accompanying numbers: 1-tank body, 101-drain port, 102-overflow port, 2-main water pipe, 201-upper main water pipe, 202-lower main water pipe, 3-water distributor, 31-inlet, 32-outlet, 301-upper water distributor, 302-lower water distributor, 4-water distributor, 401-upper water distributor, 402-lower water distributor, 403-diffuser, 4031-diffuser orifice, 404-diffuser connecting pipe, 5-distribution pipe, 501-distribution main pipe, 502-distribution branch pipe, 6-flow stabilizing device, 601-first equalizing plate, 6011-first guide hole, 602-second equalizing plate, 6021-second guide hole. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] In order to solve the technical problem that when distributing water, the local water flow disturbance in the vicinity of the diffuser orifices of the octagonal and disc-shaped water distributors is more severe, the water distribution flow disturbance thickens the inclined temperature layer, and reduces the water energy storage effect, the utility model provides a balanced water distribution natural stratification water energy storage tank, which can weaken the impact of the water distribution flow on the water temperature stratification in the tank, reduce the influence of the water distribution flow on the original water temperature stratification in the tank, improve the energy storage efficiency, and reduce energy loss.

[0034] See also Figure 1 , Figure 1 This is a structural schematic diagram of a water storage tank with balanced water distribution and natural stratification in one embodiment of the utility model. The water storage tank with balanced water distribution and natural stratification includes a tank body 1, two main water pipes 2, two water distributors 3, two water distributors 4, two groups of distribution pipes 5 and two flow stabilizing devices 6.

[0035] The tank body 1 has a sealed accommodating cavity, and a drain port 101 and an overflow port 102 communicating with the accommodating cavity are provided on the side wall of the tank body 1 .

[0036] Specifically, refer to Figure 1 The tank body 1 is made of carbon steel and is sprayed with anti-corrosion paint on its inner and outer surfaces. A drain port 101 is provided at the lower portion of the side wall of the tank body 1. The drain port 101 is provided with a valve. The valve is usually closed. If maintenance is required, the valve is opened to drain the water in the tank body 1 through the drain port 101. An overflow port 102 is provided at the upper portion of the side wall of the tank body 1. The overflow port 102 is used to drain water when the water level in the tank body 1 is too high. The height-to-diameter ratio of the tank body 1 is not greater than 2.

[0037] Reference Figure 1 and Figure 2 As shown, the two main water pipes 2 are an upper main water pipe 201 and a lower main water pipe 202 .

[0038] When storing cold or releasing heat, the upper main water pipe 201 is used to discharge the water with higher temperature in the upper part of the tank body 1, and the lower main water pipe 202 is used to pass water with lower temperature into the lower part of the tank body 1; when storing heat or releasing cold, the upper main water pipe 201 is used to pass water with higher temperature into the upper part of the tank body 1, and the lower main water pipe 202 is used to discharge the water with lower temperature in the lower part of the tank body 1.

[0039] Reference Figure 1 and Figure 2 As shown, the inlets 31 of the two water dividers 3 are respectively connected to one end of the two main water pipes 2. Specifically, the two water dividers 3 are an upper water divider 301 and a lower water divider 302. The upper water divider 301 has one inlet and multiple outlets, and the inlet of the upper water divider 301 is connected to one end of the upper main water pipe 201. The lower water divider 302 has one inlet and multiple outlets, and the inlet of the lower water divider 302 is connected to one end of the lower main water pipe 202.

[0040] In this embodiment, Figure 2 and Figure 3 As shown, the inlet 31 of the water distributor 3 is perpendicular to the outlet 32 of the water distributor 3. The water in the upper main water pipe 201 enters the center of the horizontal plane of the tank body 1 and then vertically upwards into the inlet of the upper water distributor 301. The water in the lower main water pipe 202 enters the center of the horizontal plane of the tank body 1 and then vertically enters the inlet of the lower water distributor 302.

[0041] Reference Figure 1-Figure 5 As shown, the inlets of the two water distributors 4 are connected to the outlets of the two manifolds, respectively. Specifically, the two water distributors 4 are divided into an upper water distributor 401 and a lower water distributor 402. The upper water distributor 401 and the lower water distributor 402 are made of the same material and structure. The water distributors 4 are made of PVC-U and consist of one or more circles of diffuser pipes 403. Each adjacent circle of diffuser pipes 403 is connected by four diffuser connecting pipes 404. Diffuser openings 4031 are defined at the top of the upper water distributor 401 pipe and the bottom of the lower water distributor 402 pipe. The diameter and spacing of the diffuser openings 4031 on each circle of diffuser pipes 403 are equal.

[0042] The water flow rate in the diffuser pipe 403 is less than 0.3 m / s, and the water flow rate in the diffuser orifice 4031 is less than 0.6 m / s.

[0043] Both sets of distribution pipes 5 include several main distribution pipes 501 and several branch distribution pipes 502. The number of the main distribution pipes 501 is equal to and corresponds to the number of outlets 32 of the water distributor 3. The number of the main distribution pipes 501 is half the number of circles of the diffuser pipe 403. One end of the main distribution pipe 501 is connected to the corresponding outlet 32 of the water distributor 3, and the other end of the main distribution pipe 501 is connected to the inlet of the branch distribution pipe 502.

[0044] The distribution branch pipe 502 is arranged in a branch shape and has a plurality of discharge holes. The plurality of discharge holes of the distribution branch pipe 502 are respectively connected to the plurality of bulk flow connecting pipes 404 in a one-to-one correspondence.

[0045] The water flow rate in the distribution pipe 5 is less than 0.3 m / s.

[0046] When the main water pipe 2 is taking in water, the water flows into the water distributor 3 and is distributed to the distribution pipe 5, and then enters the tank body 1 through the water distributor 4 from the distribution pipe 5; when the main water pipe 2 is draining water, the water flows into the distribution pipe 5 through the water distributor 4, and then enters the main water pipe 2 and is discharged from the tank body after merging with the water distributor 3.

[0047] Reference Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 and Figure 8 As shown, the two flow stabilizing devices 6 are fixed within the tank body 1 and are located between the corresponding water distributor 4 and the corresponding water manifold 3. Each flow stabilizing device 6 includes a first flow balancing plate 601 and a second flow balancing plate 602. The outer diameters of the first and second flow balancing plates 601 and 602 are equal and no less than 90% of the tank inner diameter. The first and second flow balancing plates 601 and 602 are arranged parallel to each other between the corresponding water manifold 3 and the corresponding water distributor 4, with a spacing of 100 to 300 mm between the first and second flow balancing plates 601 and 602.

[0048] The first flow equalizing plate 601 is uniformly distributed with a plurality of densely packed first flow guide holes 6011 of the same diameter, and the second flow equalizing plate 602 is uniformly distributed with a plurality of densely packed second flow guide holes 6021 of the same diameter. The diameters of each first flow guide hole 6011 and each second flow guide hole 6021 are equal. The lateral spacing between two adjacent first flow guide holes 6011 and two adjacent second flow guide holes 6021 is 1.25 times the diameter of the first flow guide hole 6011, and the longitudinal spacing between two adjacent first flow guide holes 6011 and two adjacent second flow guide holes 6021 is twice the diameter of the first flow guide hole 6011. The first flow guide holes 6011 and the second flow guide holes 6021 are staggered, thereby achieving a two-stage reduction in water flow velocity during charging / discharging.

[0049] The technical principle of the flow stabilizing device 6 is as follows: when the upper main water pipe 201 is introduced with water at a higher temperature, when the water enters the tank body 1 from the water distributor 4, the original water in the tank body 1 will be squeezed to make it flow downward through the first flow equalizing plate 601, or the higher temperature water introduced by the upper main water pipe 201 will directly flow downward through the first flow equalizing plate 601. Because the first flow equalizing plate 601 is densely arranged with first guide holes 6011, the water flow velocity can be balanced to avoid excessive local water flow disturbance. The second guide holes 6021 on the second flow equalizing plate 602 are staggered with the first guide holes 6011 on the first flow equalizing plate 601, which can further weaken the water flow disturbance, thereby reducing the direct impact of the higher temperature water introduced from the main water pipe 2 on the thermocline layer, causing the thermocline layer to thicken.

[0050] In summary, the beneficial effects of the technical solution of the present invention are as follows: by arranging a flow stabilizing device 6 in the tank body 1, when water enters the tank body 1 from the water distributor 4, the original water in the tank body 1 will be squeezed to flow downward through the first flow equalizing plate 601 or the water with a higher temperature introduced from the upper main water pipe 201 will directly flow downward through the first flow equalizing plate 601. Because the first flow equalizing plate 601 is densely arranged with the first guide holes 6011, the water flow rate can be balanced to avoid In order to avoid excessive local water flow disturbance, the second guide holes 6021 on the second flow equalizing plate 602 and the first guide holes 6011 on the first flow equalizing plate 601 are staggered, which can further weaken the water flow disturbance, thereby reducing the direct impact of the higher temperature water introduced from the main water pipe 2 on the thermocline layer, causing the thermocline layer to thicken, so as to achieve the effect of weakening the impact of the water distribution flow on the water temperature stratification in the tank when charging or releasing cold, reducing the influence of the water distribution flow on the original water temperature stratification in the tank, improving energy storage efficiency, and reducing energy loss.

[0051] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A balanced water distribution naturally stratified water storage tank, characterized in that: include: Tank; two main water pipes; Two water distributors, the inlets of the two water distributors are respectively connected to one end of the two main water pipes; Two water distributors, the inlets of the two water distributors are respectively connected to the outlets of the two water dividers; and Two flow stabilizing devices, both of which are fixed in the tank body and respectively located between the corresponding water distributor and the corresponding water divider, both of which include a first flow balancing plate and a second flow balancing plate, the first flow balancing plate is evenly distributed with a number of first flow guide circular holes, the second flow balancing plate is evenly distributed with a number of second flow guide circular holes, and the first flow guide circular holes and the second flow guide circular holes are staggered.

2. The balanced water distribution naturally stratified water storage tank according to claim 1 is characterized in that: The tank body has a sealed accommodating cavity, and a drain port and an overflow port communicating with the accommodating cavity are opened on the side wall of the tank body.

3. The balanced water distribution naturally stratified water storage tank according to claim 1 is characterized in that: The inlet of the water separator is perpendicular to the outlet of the water separator.

4. The balanced water distribution naturally stratified water storage tank according to claim 1 is characterized in that: The two main water pipes are an upper main water pipe and a lower main water pipe, and the two water distributors are an upper water distributor and a lower water distributor. The upper water distributor has an inlet and multiple outlets, and the inlet of the upper water distributor is connected to one end of the upper main water pipe. The lower water distributor has an inlet and multiple outlets, and the inlet of the lower water distributor is connected to one end of the lower main water pipe.

5. The balanced water distribution naturally stratified water storage tank according to claim 1 is characterized in that: The water distributor is composed of one or more circles of diffuser pipes, and each adjacent two circles of diffuser pipes are connected by a plurality of diffuser connecting pipes. The diffuser pipes are provided with diffuser orifices, and the diameter and arrangement spacing of the diffuser orifices on each circle of diffuser pipes are equal.

6. The balanced water distribution naturally stratified water storage tank according to claim 5 is characterized in that: It also includes two groups of distribution pipes, which are used to connect the inlets of the corresponding water distributors with the outlets of the corresponding water dividers.

7. The balanced water distribution naturally stratified water storage tank according to claim 6, characterized in that: Both groups of distribution pipes include several distribution main pipes and several distribution branch pipes. The number of the distribution main pipes is equal to the number of outlets of the water distributor and corresponds one to one. The number of the distribution main pipes is half the number of circles of the diffuser pipes. One end of the distribution main pipe is connected to the corresponding outlet of the water distributor, and the other end of the distribution main pipe is connected to the inlet of the distribution branch pipe. The distribution branch pipes are arranged in a branch shape and have multiple discharge holes. The multiple discharge holes of the distribution branch pipes are respectively connected one to one with multiple diffuser connecting pipes.

8. The balanced water distribution naturally stratified water storage tank according to claim 1 is characterized in that: The outer diameters of the first flow balancing plate and the second flow balancing plate are equal and not less than 90% of the inner diameter of the tank.

9. The balanced water distribution naturally stratified water storage tank according to claim 1, characterized in that: The spacing between the first current balancing plate and the second current balancing plate is 100-300 mm.

10. The balanced water distribution naturally stratified water storage tank according to claim 1, characterized in that: The diameters of each first guide circular hole and each second guide circular hole are equal, the lateral spacing between two adjacent first guide circular holes and two adjacent second guide circular holes is 1.25 times the diameter of the first guide circular hole, and the longitudinal spacing between two adjacent first guide circular holes and two adjacent second guide circular holes is 2 times the diameter of the first guide circular hole.

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