Modularized efficient water distribution system with combined line and plane

Abstract

The utility model relates to a line-plane combined modular efficient water distribution system, which is characterized in that a first diffusion speed reduction cavity and a second diffusion speed reduction cavity are respectively arranged on a water distribution point of a water distribution pipeline upwards and downwards in an aligning manner through flanges, and are both trumpet-shaped; a first flow equalizing plate and a second flow equalizing plate respectively cover horn mouths of the first diffusion speed reduction cavity and the second diffusion speed reduction cavity, water baffles are arranged at the top of the first flow equalizing plate at intervals, the water baffles are fixed through a water distributor supporting plate arranged on the outer edge of the first flow equalizing plate, and the second flow equalizing plate is arranged at the upper part of the container bottom plate at intervals; and a plurality of flow equalizing holes are formed in the first flow equalizing plate and the second flow equalizing plate. According to the water distributor, the diameter of incoming flow is expanded, then the incoming flow is obviously decelerated and is uniformly distributed through the flow equalizing plate, the distribution balance rate of 95% or above is achieved, and water distribution is completed in the form of gravity flow through a gap between the flow equalizing plate and the water baffle; the design diffusion length of the water distributor is obviously increased, and the high-performance target that the FOM is not lower than 90% is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water energy storage, and in particular to a modular high-efficiency water distribution system combining lines and surfaces. Background Art

[0002] There are three main types of temperature-stratified water distributors on the market: 1. Linear water distribution: refers to the flow of water along the pipe and outflow from openings along the way. The outlet jet is arranged linearly. Common types include octagonal, H-type, and radial disc types; 2. Surface water distribution: refers to the full-section outflow of water on a certain plane. The outlet jet is arranged in a plane. The common form is a porous flow-equalizing plate; 3. Point water distribution: It needs to be combined with a special water distribution head to achieve water flow deceleration and steering through cavity expansion, blocking, etc., and evenly diffuse it to the surrounding area at a lower speed.

[0003] Currently, the mainstream application method is line water distribution. In situations with higher or special requirements, a combination of various methods can be used to achieve the required performance. Each of the above water distributors also has its own drawbacks. In actual application, the selection should be made after a comprehensive consideration of the maximum design flow rate, operating temperature, external dimensions, and internal structure of the water storage device.

[0004] In engineering practice, the above three types of water distributors have the following disadvantages:

[0005] Octagonal and disc-shaped line distribution systems are primarily designed for cylindrical vessels and are less adaptable to square or irregularly shaped containers. Conventional water distributors are typically designed with both axisymmetric and centrally symmetrical layouts to achieve a natural balance in flow distribution. However, their adaptability to irregularly shaped vessels is somewhat limited, requiring rational zoning to transform each zone into a relatively regular pattern. Conventional design methods can then be applied to the water distributor engineering within these zones.

[0006] The inherent dispersion length of disc-type water distributors is difficult to increase. Some international studies have shown that using this type of water distributor can increase its upper Reynolds number design limit. However, field measurements have shown that its stratification performance is average. While it is relatively suitable for disaster recovery applications with extremely large design flows, it struggles to achieve high performance in other situations. Domestic application cases are relatively limited.

[0007] The H-type water distribution system is basically used in square containers. It can also be used in special-shaped containers that are not too irregular in shape. It has poor adaptability in cylindrical containers.

[0008] Surface water distributors typically utilize multi-porous equalizing plates, which have a large equivalent dispersion length. However, these devices often employ a primary linear coarse distribution scheme followed by a secondary, precise surface distribution scheme using equalizing plates, resulting in a complex overall structure. Furthermore, since the equalizing plates must be installed across the entire horizontal cross-section of the vessel, the required support and hanging engineering for these large-area equalizing plates is relatively difficult to implement. Consequently, these devices are typically used in applications requiring high performance, and their application in China is relatively limited. Utility Model Content

[0009] The technical problem to be solved by the present invention is to combine the advantages of line water distribution, surface water distribution and point water distribution, learn from their strengths and overcome their weaknesses, and based on the basic principles of water distributor engineering design, study a modular and efficient water distribution system that combines line and surface.

[0010] The technical solution of the utility model to solve the above technical problems is as follows:

[0011] A modular high-efficiency water distribution system combining lines and surfaces, comprising a water distribution pipeline, a flange, an upper water distributor and a lower water distributor, the upper water distributor comprising a first diffusion deceleration chamber, a water distributor support plate, a first flow equalizing plate and a water baffle; the lower water distributor comprising a second diffusion deceleration chamber and a second flow equalizing plate; the first diffusion deceleration chamber and the second diffusion deceleration chamber are respectively aligned upward and downward through flanges and arranged on the water distribution point of the water distribution pipeline, the first diffusion deceleration chamber and the second diffusion deceleration chamber are both trumpet-shaped, the trumpet mouths of the first diffusion deceleration chamber and the second diffusion deceleration chamber are respectively covered with a first flow equalizing plate and a second flow equalizing plate, a water baffle is arranged at intervals on the top of the first flow equalizing plate, the water baffle is fixed by a water distributor support plate arranged on the outer edge of the first flow equalizing plate, the second flow equalizing plate is arranged at intervals on the upper part of the bottom plate of the container; a plurality of flow equalizing holes are provided on the first flow equalizing plate and the second flow equalizing plate.

[0012] The beneficial effect of the utility model is that water flows through the flange of the water distribution point of the water distribution pipeline, the water flow is split, and enters the upper water distributor and the lower water distributor respectively, and is significantly decelerated by the first diffusion deceleration chamber and the second diffusion deceleration chamber respectively, and then is evenly distributed through the first flow equalizing plate and the second flow equalizing plate respectively. After the water flows out from the flow equalizing hole of the first flow equalizing plate, it is blocked by the water baffle, changes the flow direction and slowly enters the container along the gap between the water baffle and the first flow equalizing plate. After the water flows out from the flow equalizing hole of the second flow equalizing plate, it is blocked by the bottom plate of the container, changes the flow direction and slowly enters the container along the gap between the bottom plate of the container and the second flow equalizing plate; the line-surface combined water distributor will significantly decelerate the future flow after the diameter is expanded, and then it is evenly distributed through the flow equalizing plates (first flow equalizing plate, second flow equalizing plate) with a reasonable opening ratio, achieving a distribution balance rate of more than 95%, and then the water is distributed in the form of gravity flow through the gap between the flow equalizing plates (first flow equalizing plate, second flow equalizing plate) and the water baffle (or container bottom plate). The equivalent diffuser length of the entire water distributor is 3 to 5 times that of a disk-type water distributor of the same size, significantly increasing its design diffuser length and reducing its design Reynolds number, thereby facilitating the achievement of a high-performance Form of Material (FOM) (cold storage efficiency) of at least 90%. Furthermore, due to its extended diffuser length, this configuration is advantageous for applications with extremely high flow rates and tall, thin vessels where the flow rate is relatively large relative to the projected area of the vessel, without significantly degrading performance. Due to its extended equivalent diffuser length, fewer water distributors can be configured for the same maximum design flow rate, facilitating cost control. During project implementation, leveling the installation height of each water distributor will also be easier.

[0013] On the basis of the above technical solution, the present invention can also be improved as follows.

[0014] Furthermore, the water distribution pipeline is a ring-shaped water distribution pipeline, on which a plurality of water inlet and outlet points are arranged, and water distribution points are arranged between adjacent water inlet and outlet points.

[0015] Furthermore, the flow equalizing holes are circular and are evenly distributed on the first flow equalizing plate and the second flow equalizing plate.

[0016] Furthermore, the edge of the first current balancing plate is fully welded to the first diffusion and deceleration cavity, and the edge of the second current balancing plate is fully welded to the second diffusion and deceleration cavity.

[0017] Furthermore, the water baffle is movably connected to the support plate so that the distance between the water baffle and the first flow equalizing plate can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the water distribution pipeline of a modular high-efficiency water distribution system combining line and surface in the utility model;

[0019] Figure 2This is a schematic diagram of an upper water distributor of a modular high-efficiency water distribution system combining line and surface according to the present invention;

[0020] Figure 3 This is a schematic diagram of a lower water distributor of a modular high-efficiency water distribution system combining line and surface according to the present invention;

[0021] Figure 4 This is a structural schematic diagram of the first flow equalizing plate or the second flow equalizing plate of a line-surface combined modular high-efficiency water distribution system of the utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] 1. Water distribution pipeline; 1-1. Water distribution point; 1-2. Water inlet and outlet points; 2. Upper water distributor; 3. First diffusion and deceleration chamber; 4. First flow equalizing plate; 5. Water baffle; 6. Water distributor support plate; 7. Flange; 8. Lower water distributor; 9. Second diffusion and deceleration chamber; 10. Second flow equalizing plate; 11. Container bottom plate. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0025] like Figures 1 to 4 As shown, embodiment 1 of the utility model is a modular high-efficiency water distribution system combining lines and surfaces, including a water distribution pipeline 1, a flange 7, an upper water distributor 2 and a lower water distributor 8. The upper water distributor 2 includes a first diffusion deceleration chamber 3, a water distributor support plate 6, a first flow equalizing plate 4 and a water baffle 5; the lower water distributor 8 includes a second diffusion deceleration chamber 9 and a second flow equalizing plate 10; the first diffusion deceleration chamber 3 and the second diffusion deceleration chamber 9 are respectively aligned upward and downward through the flange 7 on the water distribution point 1-1 of the water distribution pipeline 1, and the first diffusion deceleration chamber 3 and the second diffusion deceleration chamber 9 are both trumpet-shaped, and the trumpet mouths of the first diffusion deceleration chamber 3 and the second diffusion deceleration chamber 9 are respectively covered with a first flow equalizing plate 4 and a second flow equalizing plate 10, and a water baffle 5 is arranged at intervals on the top of the first flow equalizing plate 4, and the water baffle 5 is fixed by a water distributor support plate 6 arranged on the outer edge of the first flow equalizing plate 4, and the second flow equalizing plate 10 is arranged at intervals on the upper part of the container bottom plate 11; a plurality of flow equalizing holes are opened on the first flow equalizing plate 4 and the second flow equalizing plate 10.

[0026] Water flows through the flange 7 of the water distribution point 1-1 of the water distribution pipeline 1, and the water flow is divided and enters the upper water distributor 2 and the lower water distributor 8 respectively. It is significantly decelerated by the first diffusion deceleration chamber 3 and the second diffusion deceleration chamber 9 respectively, and then passes through the first equalizing plate 4 and the second equalizing plate 10 respectively for uniform distribution (surface water distribution). After the water flows out of the equalizing hole of the first equalizing plate 4, it is blocked by the water baffle 5, changes the flow direction and slowly enters the container along the gap between the water baffle 5 and the first equalizing plate 4 (line water distribution). The water flows from the equalizing hole of the second equalizing plate 10. After flowing out of the equalizing hole, the water is blocked by the container bottom plate 11, changing its flow direction and slowly entering the container along the gap between the container bottom plate 11 and the second equalizing plate 10 (line water distribution). The line-surface combined water distributor significantly slows down the incoming flow after expanding its diameter. It is then evenly distributed through the equalizing plates (first equalizing plate 4, second equalizing plate) 10 with a reasonable opening ratio, achieving a distribution balance rate of over 95%. The water is then distributed in the form of gravity flow through the gap between the equalizing plates (first equalizing plate 4, second equalizing plate 10) and the water retaining plate 5 (or container bottom plate 11). The equivalent diffusion length of the entire water distributor is 3 to 5 times that of a disc-type water distributor of the same size, which can significantly increase the design diffusion length of the water distributor and reduce the design Reynolds number of the water distributor, which is conducive to achieving the high-performance goal of FOM of not less than 90%. In addition, due to the large diffuser length, this configuration is conducive to application in ultra-large flow and tall and thin containers with large flow relative to the projected area of the container, and will not lead to excessive performance degradation; due to the large equivalent diffuser length of the water distributor, under the premise of the same design maximum flow, the number of water distributors configured is relatively small, which is conducive to cost control; during the implementation of the project, the installation height leveling of each water distributor will also become easier to implement.

[0027] Example 2 of the present invention is a modular, high-efficiency water distribution system that combines lines and surfaces. Based on Example 1, the water distribution line 1 is a ring-shaped water distribution line with multiple water inlet and outlet points 1-2, and water distribution points 1-1 are provided between adjacent water inlet and outlet points 1-2. The water distribution line 1 adopts a ring-shaped solution and multi-point water supply, which significantly reduces the length of the water distribution path, usually only one-third or even less than that of an H-type water distributor. This is conducive to the natural balance of hydraulic distribution and can reduce the overall operating pressure drop of the water distributor, which is beneficial for reducing water pump energy consumption and alleviating cavitation in situations where the static pressure at the water pump inlet is low.

[0028] Embodiment 3 of the present invention is a modularized high-efficiency water distribution system combining lines and surfaces. Based on embodiment 1, the equalizing holes are circular and evenly distributed on the first equalizing plate 4 and the second equalizing plate 10. This facilitates the uniform distribution of water flow and ensures the dispersion effect.

[0029] Example 4 of the present invention is a modular, high-efficiency water distribution system that combines lines and surfaces. Based on Example 1, the edge of the first equalizing plate 4 is fully welded to the first diffusion and deceleration chamber 3, and the edge of the second equalizing plate 10 is fully welded to the second diffusion and deceleration chamber 9. This ensures that there is no gap between the edge of the first equalizing plate 4 and the first diffusion and deceleration chamber 3, thereby preventing water from seeping through the edge of the first equalizing plate 4 and reducing the dispersion effect of the first equalizing plate 4; and ensures that there is no gap between the edge of the second equalizing plate 10 and the second diffusion and deceleration chamber 9, thereby preventing water from seeping through the edge of the second equalizing plate 10 and reducing the dispersion effect of the second equalizing plate 10.

[0030] Embodiment 5 of the present invention is a modular, high-efficiency water distribution system that combines lines and surfaces. Based on any one of Embodiments 1 to 4, a water baffle 5 is movably connected to a support plate 6 to allow for adjustment of the spacing between the water baffle 5 and the first equalizing plate 4. The gap between the first equalizing plate 4 and the water baffle 5 is a density-difference submerged jet, and its jet velocity must be strictly controlled to ensure that the flow properties of the water flow are gravity flow.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A modular and efficient water distribution system combining line and surface, characterized in that: The invention comprises a water distribution pipeline (1), a flange (7), an upper water distributor (2) and a lower water distributor (8), wherein the upper water distributor (2) comprises a first diffusion deceleration chamber (3), a water distributor support plate (6), a first flow equalizing plate (4) and a water baffle (5); the lower water distributor (8) comprises a second diffusion deceleration chamber (9) and a second flow equalizing plate (10); the first diffusion deceleration chamber (3) and the second diffusion deceleration chamber (9) are respectively arranged on the water distribution point (1-1) of the water distribution pipeline (1) in an upward and downward alignment through the flange (7); the first diffusion deceleration chamber (3) and the second diffusion deceleration chamber (9) are respectively arranged on the water distribution point (1-1) of the water distribution pipeline (1) in an upward and downward alignment; The deceleration chambers (9) are all trumpet-shaped, and the trumpet mouths of the first diffusion deceleration chamber (3) and the second diffusion deceleration chamber (9) are respectively covered with the first flow equalizing plate (4) and the second flow equalizing plate (10), and the top of the first flow equalizing plate (4) is provided with the water baffle (5) at intervals, and the water baffle (5) is fixed by the water distributor support plate (6) provided on the outer edge of the first flow equalizing plate (4), and the second flow equalizing plate (10) is provided at intervals on the upper part of the container bottom plate (11); and a plurality of flow equalizing holes are provided on the first flow equalizing plate (4) and the second flow equalizing plate (10).

2. According to claim 1, a modular high-efficiency water distribution system combining line and surface, characterized in that: The water distribution pipeline (1) is a ring-shaped water distribution pipeline, on which a plurality of water inlet and outlet points (1-2) are arranged, and a water distribution point (1-1) is arranged between adjacent water inlet and outlet points (1-2).

3. The modular high-efficiency water distribution system combining line and surface according to claim 1, characterized in that: The flow balancing holes are circular and are evenly distributed on the first flow balancing plate (4) and the second flow balancing plate (10).

4. The modular high-efficiency water distribution system combining line and surface according to claim 1, characterized in that: The edge of the first current averaging plate (4) is fully welded to the first diffusion deceleration chamber (3), and the edge of the second current averaging plate (10) is fully welded to the second diffusion deceleration chamber (9).

5. A modular high-efficiency water distribution system combining line and surface according to any one of claims 1 to 4, characterized in that: The water baffle (5) is movably connected to the support plate (6) so that the distance between the water baffle (5) and the first flow equalizing plate (4) can be adjusted.

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