Water distributor and natural layering type chilled water storage device

Abstract

The utility model relates to the technical field of chilled water storage devices, in particular to a water distributor and a natural layering type chilled water storage device, the water distributor comprises a water distribution assembly, the water distribution assembly comprises a water distribution pipe and a flow guide plate which are both of an annular structure, and the flow guide plate and the water distribution pipe are oppositely arranged at intervals in the axis direction of the flow guide plate. A plurality of spraying holes are formed in the circumferential direction of the side, facing the flow guide plate, of the water distribution pipe at intervals, water flow entering the water distribution pipe can be sprayed out through the spraying holes and sprayed to the flow guide plate, and then the water flow slowly flows out from the inner side and the outer side of the annular structure where the flow guide plate is located along the flow guide plate. Under the cooperation of the water distribution pipe with the annular structure and the flow guide plate, water flow can stably flow into the cold storage tank at a slow and uniform speed, so that the uniformity and stability of water distribution are improved to a certain extent, and the disturbance of inlet water to a thermocline in the cold storage tank is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of water-cool thermal energy storage devices, and more particularly to a water distributor and a natural stratification type water-cool thermal energy storage device. Background Art

[0002] Water-cool thermal energy storage uses liquid water as the energy storage material, and stores the heat required by the air-conditioning system through the sensible heat of the liquid water. Currently, the most widely used water-cool thermal energy storage device is the natural stratification type water-cool thermal energy storage device, that is, natural stratification is achieved by the different densities of water at different temperatures.

[0003] The thickness of the thermocline is an important factor affecting the performance of water-cool thermal energy storage. In the storage tank of the natural stratification type water-cool thermal energy storage device, a water distributor is usually provided to ensure that the water flow enters the storage tank slowly, evenly and stably, so as to reduce the disturbance to the thermocline. However, the structure of the current water distributor still needs to be improved in terms of the stability and uniformity of water distribution. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide a water distributor and a natural stratification type water-cool thermal energy storage device, so as to improve the uniformity and stability of water distribution to a certain extent.

[0005] The present utility model provides a water distributor, which includes a water distribution assembly;

[0006] The water distribution assembly includes a water distribution pipe and a guide plate. Both the water distribution pipe and the guide plate are annular structures, and the water distribution pipe and the guide plate are spaced apart from each other along the axial direction of the guide plate.

[0007] A plurality of spray holes are spaced apart in the circumferential direction on the side of the water distribution pipe facing the guide plate. The water flow entering the water distribution pipe can be sprayed onto the guide plate through the spray holes.

[0008] Further, the water distribution assembly further includes a rectifying fin. The rectifying fin is vertically connected between the water distribution pipe and the guide plate, and the number of the rectifying fins is multiple. The multiple rectifying fins are spaced apart from each other one by one between any two adjacent spray holes.

[0009] Further, the water flow velocity at each spray hole is 1.2 m / s - 1.5 m / s.

[0010] Further, the diameter of the pipe forming the water distribution pipe is d, and the radial width of the guide plate is a, 0.7 ≤ a / d ≤ 1.5.

[0011] Further, the diameter of the pipe forming the water distribution pipe is d, the height of the rectifying fin in the axial direction of the guide plate is h, 0.5 ≤ h / d ≤ 1.0, and the width of the rectifying fin in the radial direction of the guide plate is b, 0.5 ≤ b / d ≤ 1.0.

[0012] Further, the water distribution pipe is a polygonal annular structure formed by sequentially connecting a plurality of straight pipes end to end, the flow guide plate is a polygonal annular structure formed by sequentially connecting a plurality of support plates end to end, and the plurality of straight pipes of the water distribution pipe and the plurality of straight plates of the flow guide plate are arranged opposite to each other one by one.

[0013] Further, the water distribution assembly is provided with two groups arranged coaxially and spaced apart from each other from the inside to the outside. The water distribution pipe of the water distribution assembly located in the inner layer is an inner ring water distribution pipe, and the water distribution pipe of the water distribution assembly located in the outer layer is an outer ring water distribution pipe;

[0014] The water distributor further includes a central pipe and a flow splitting assembly. The central pipe is coaxially arranged inside the inner ring water distribution pipe, and the central pipe is respectively communicated with the inner ring water distribution pipe and the outer ring water distribution pipe through the flow splitting assembly.

[0015] Further, the flow splitting assembly includes a primary flow splitting pipe, a secondary flow splitting pipe, and a tertiary flow splitting pipe;

[0016] One end of the primary flow splitting pipe is communicated with the central pipe, the other end of the primary flow splitting pipe is communicated with the middle of the secondary flow splitting pipe, and both ends of the secondary flow splitting pipe are communicated with the tertiary flow splitting pipe;

[0017] The tertiary flow splitting pipe is communicated with the secondary flow splitting pipe through the middle, one end of the tertiary flow splitting pipe is communicated with the inner ring water distribution pipe, and the other end of the tertiary flow splitting pipe is communicated with the outer ring water distribution pipe;

[0018] The number of the flow splitting assemblies is multiple, the multiple flow splitting assemblies are evenly spaced around the circumference of the central pipe, and the tertiary flow splitting pipes of the multiple flow splitting assemblies are evenly spaced around the circumference of the central pipe.

[0019] Further, the inner ring water distribution pipe and the outer ring water distribution pipe are used to be coaxially arranged in the cold storage tank;

[0020] The area of the ring where the inner ring water distribution pipe is located is 0.2 times to 0.35 times of the cross-sectional area of the cold storage tank, and the area of the ring where the outer ring water distribution pipe is located is 0.65 times to 0.8 times of the cross-sectional area of the cold storage tank.

[0021] The present utility model also provides a natural stratification type water cold storage device, including the water distributor described in any one of the above.

[0022] Compared with the prior art, the beneficial effects of the present utility model are:

[0023] The water distributor provided by the present utility model includes a water distribution assembly. The water distribution assembly includes a water distribution pipe and a guide plate. The water distribution pipe is of an annular structure and forms an annular pipe cavity for water flow to pass through. The guide plate is also of an annular structure, and the plate surface of the guide plate is perpendicular to the axis of the guide plate. The guide plate is arranged at a spaced interval facing the water distribution pipe, and the water distribution pipe is located on one side in the axial direction of the guide plate, so that the plate surface of the guide plate faces the water distribution pipe. A plurality of spray holes are formed on the side of the water distribution pipe facing the guide plate, and the plurality of spray holes are evenly spaced along the circumferential direction of the annular structure where the water distribution pipe is located. All the plurality of water distribution holes face the guide plate. The water flow entering the water distribution pipe can be ejected through the plurality of spray holes and sprayed on the guide plate, and then slowly flows out along the guide plate from the inner side and the outer side of the annular structure where the guide plate is located. Thus, when the water distributor distributes water to the cold storage tank, with the cooperation of the annular water distribution pipe and the guide plate of the annular structure, the water flow can smoothly flow into the cold storage tank at a slow and uniform speed, thereby improving the uniformity and stability of water distribution to a certain extent and reducing the disturbance of the incoming water to the thermocline in the cold storage tank.

[0024] The present utility model also provides a natural stratification type water cold storage device, including the water distributor described above. Therefore, the natural stratification type water cold storage device also has the beneficial effects of the water distributor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic diagram of water distribution of the water distributor provided by the embodiment of the present utility model in the cold storage tank;

[0027] Figure 2 It is a partial schematic diagram of the water distributor provided by the embodiment of the present utility model;

[0028] Figure 3 It is a partial schematic diagram of the water distribution pipe of the water distributor provided by the embodiment of the present utility model.

[0029] Reference numerals:

[0030] 1 - water distribution pipe, 11 - spray hole, 2 - guide plate, 3 - rectifying fin, 4 - cold storage tank, 5 - central pipe, 6 - primary shunt pipe, 7 - secondary shunt pipe, 8 - tertiary shunt pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0032] Generally, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model.

[0033] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0036] Next, refer to Figures 1 to 3 Describe a water distributor and a natural stratification type water storage and cooling device according to some embodiments of the present application.

[0037] The present application provides a water distributor for use in a cold storage tank 4 of a natural stratification type water storage and cooling device.

[0038] As Figures 1 to 3As shown in the figure, the water distributor includes a water distribution component. The water distribution component includes a water distribution pipe 1 and a guide plate 2. The water distribution pipe 1 is of an annular structure, and the water distribution pipe 1 forms an annular pipe cavity through which water flow can pass. The guide plate 2 is also of an annular structure, and the plate surface of the guide plate 2 is perpendicular to the axis of the guide plate 2. The guide plate 2 is arranged at a spaced interval facing the water distribution pipe 1, and the water distribution pipe 1 is located on one side of the axis direction of the guide plate 2, so that the plate surface of the guide plate 2 faces the water distribution pipe 1.

[0039] Specifically, as Figure 1 shown in the top view of the water distributor in the cold storage tank (the guide plate 2 is not shown in the figure). When the water distributor is arranged in the cold storage tank 4, for a vertical cold storage tank 4 with a circular cross-section, the axis of the annular structure where the water distribution pipe 1 is located, the axis of the guide plate 2, and the axis of the cold storage tank 4 all extend along the vertical direction and are collinear. When the water distributor is a lower water distributor for the lower part of the cold storage tank 4, the guide plate 2 is located below the water distribution pipe 1. When the water distributor is an upper water distributor for the upper part of the cold storage tank 4, the guide plate 2 is located above the water distribution pipe 1.

[0040] As Figure 2 shown in the partial schematic diagram of the water distribution pipe and the facing guide plate, a plurality of spray holes 11 are formed on the side of the water distribution pipe 1 facing the guide plate 2. The plurality of spray holes 11 are evenly spaced along the circumferential direction of the annular structure where the water distribution pipe 1 is located. All the plurality of water distribution holes face the guide plate 2. The water flow entering the water distribution pipe 1 can be ejected through the plurality of spray holes 11 and sprayed on the guide plate 2, and then slowly flow out along the inner and outer sides of the annular structure where the guide plate 2 is located. Thus, with the cooperation of the annular water distribution pipe 1 and the guide plate 2, the water flow can smoothly flow into the cold storage tank 4 at a slow and uniform speed, completing the water distribution to the cold storage tank 4, and further improving the uniformity and stability of water distribution to a certain extent, and reducing the disturbance of the incoming water to the thermocline in the cold storage tank 4.

[0041] In this embodiment, preferably, as Figure 2 and Figure 3 shown in the figure, the water distribution component further includes a flow rectifying piece 3. The flow rectifying piece 3 is arranged between the guide plate 2 and the water distribution pipe 1. One end of the flow rectifying piece 3 is vertically connected to the guide plate 2, and the other end of the flow rectifying piece 3 is vertically connected to the water distribution pipe 1. Thus, the guide plate 2 is installed on the water distribution pipe 1 through the flow rectifying piece 3.

[0042] At the same time, the number of the flow rectifying pieces 3 is multiple. The multiple flow rectifying pieces 3 are respectively arranged between any two adjacent spray holes 11 one by one to separate the adjacent spray holes 11 through the flow rectifying pieces 3, thereby reducing the mutual influence between the adjacent two spray holes 11 and improving the uniformity and stability of water distribution.

[0043] In this embodiment, preferably, the spray holes 11 have a predetermined aperture, and the water flow velocity at each spray hole 11 is 1.2 m / s - 1.5 m / s, so that the water distributor meets the condition that the Reynolds number is less than 2000 and the Froude number is less than 1. When the Reynolds number is less than 2000, the viscous force has a greater influence on the flow field, and the disturbance of the flow velocity in the flow field will decay due to the viscous force, making the water flow stable and forming a steady laminar flow. When the Froude number is less than 1, the role of gravity dominates, the water wave propagation speed is slower, and the water flow is relatively stable.

[0044] In this embodiment, preferably, flanging parts are formed on both the inner edge and the outer edge of the annular deflector 2 to improve the strength of the deflector 2.

[0045] In this embodiment, preferably, the water distribution pipe 1 includes a plurality of straight pipes, and the plurality of straight pipes are connected end to end in sequence, so that the water distribution pipe 1 has a polygonal annular structure. For example, the water distribution pipe 1 is formed by connecting sixteen straight pipes end to end in sequence, so that the water distribution pipe 1 is a sixteen-sided annular structure.

[0046] At the same time, the deflector 2 is also a polygonal annular structure. Specifically, the deflector 2 includes a plurality of straight plates, and the plurality of straight plates are connected end to end in sequence. The straight plates of the deflector 2 have the same number as the straight pipes of the water distribution pipe 1, so that the deflector 2 and the water distribution pipe 1 are annular structures with the same shape, that is, the water distribution pipe 1 is sixteen-sided, and the deflector 2 is also sixteen-sided, and the plurality of straight plates and the plurality of straight pipes are arranged at intervals one by one up and down.

[0047] In this embodiment, preferably, the diameter of the straight pipe forming the water distribution pipe 1 is d, the plate surface of the deflector 2 has a width a along its radial direction, and the width a of the deflector 2 (which is also the width of the straight plate forming the deflector 2) satisfies 0.7 ≤ a / d ≤ 1.5. The flow rectifying piece 3 has a width b along the radial direction of the deflector 2 and a height h along the axial direction of the deflector 2. The width b of the flow rectifying piece 3 satisfies: 0.5 ≤ b / d ≤ 1.0, and the height h of the flow rectifying piece 3 satisfies: 0.5 ≤ h / d ≤ 1.0, so that the flow rectifying piece 3 can play an effective blocking role between adjacent spray holes 11, and the flow rectifying piece 3 and the deflector 2 can cooperate with each other to guide the water flow ejected from the spray holes 11 to complete water distribution smoothly.

[0048] In an embodiment of the present application, preferably, the water distributor includes a central pipe 5, the water distribution pipe 1 is communicated with the central pipe 5, and the central pipe 5 is communicated with the inlet and outlet water pipe orifice on the cold storage tank 4, so that the water flow can flow in the water distribution pipe 1.

[0049] In this embodiment, preferably, as Figure 1As shown, the water distributor includes two sets of water distribution components. The water distribution pipes 1 of the two sets of water distribution components are coaxial and arranged at intervals from the inside to the outside. One set of water distribution components is located in the inner layer, and the other set is located in the outer layer. The water distribution pipe 1 of the water distribution component located in the inner layer is the inner ring water distribution pipe, and the water distribution pipe 1 of the water distribution component located in the outer layer is the outer ring water distribution pipe. The inner ring water distribution pipe and the outer ring water distribution pipe are connected to the central pipe 5 through a flow splitting component, so that the water flow in the central pipe 5 can be evenly split into the inner ring water distribution pipe and the outer ring water distribution pipe through the flow splitting component, and the water distribution of the cold storage tank 4 is carried out jointly by the inner ring water distribution pipe and the outer ring water distribution pipe, thereby further improving the water distribution uniformity on the cross-section of the cold storage tank 4.

[0050] In this embodiment, preferably, as Figure 1 shown, there are multiple sets of flow splitting components. Each set of flow splitting components includes a primary flow splitting pipe 6, a secondary flow splitting pipe 7, and two tertiary flow splitting pipes 8.

[0051] Taking one set of flow splitting components as an example for illustration, an annular region is formed between the inner ring water distribution pipe and the outer ring water distribution pipe. The two tertiary flow splitting pipes 8 are arranged in this annular region and are spaced a predetermined distance along the circumferential direction of this annular region. One end of each of the two tertiary flow splitting pipes 8 is connected to the inner ring water distribution pipe, and the other end of each of the two tertiary flow splitting pipes 8 is connected to the outer ring water distribution pipe. The secondary flow splitting pipe 7 is arranged between the two tertiary flow splitting pipes 8, and the middle parts of the two tertiary flow splitting pipes 8 are correspondingly connected to the two ends of the secondary flow splitting pipe 7. The central pipe 5 is located inside the annular structure where the inner ring water distribution pipe is located, and the axis of the central pipe 5 is collinear with the axis of the annular structure where the inner ring water distribution pipe is located. One end of the primary flow splitting pipe 6 is connected to the central pipe 5, and the other end of the primary flow splitting pipe 6 is connected to the middle part of the secondary flow splitting pipe 7. Multiple sets of flow splitting components are evenly spaced around the circumferential direction of the central pipe 5, and all the tertiary flow splitting pipes 8 in multiple sets of flow splitting components are evenly spaced along the circumferential direction of the above-mentioned annular region.

[0052] For example, as Figure 1 shown, there are four sets of flow splitting components, that is, there are four primary flow splitting pipes 6, four secondary flow splitting pipes 7, and eight tertiary flow splitting pipes 8. During flow splitting, the water flow in the central pipe 5 is first divided into four streams and flows into the four primary flow splitting pipes 6, then is divided into eight streams through the four secondary flow splitting pipes 7 and flows into the eight tertiary flow splitting pipes 8 respectively, and finally flows into the inner ring water distribution pipe and the outer ring water distribution pipe through the eight tertiary flow splitting pipes 8, so that the water flow can evenly flow into the inner ring water distribution pipe and the outer ring water distribution pipe, and then be evenly distributed into the cold storage tank 4.

[0053] In this embodiment, preferably, the area of the annular shape where the inner ring water distribution pipe is located is 0.2 to 0.35 times the cross-sectional area of the cold storage tank. For example, the inner ring water distribution pipe is located at the position of 1 / 4 of the cross-sectional area of the cold storage tank 4; preferably, the area of the annular shape where the outer ring water distribution pipe is located is 0.65 to 0.8 times the cross-sectional area of the cold storage tank. For example, the outer ring water distribution pipe is located at the position of 3 / 4 of the cross-sectional area of the cold storage tank 4, so as to improve the uniformity of water distribution.

[0054] This application also provides a natural stratification type water cold storage device, including the water distributor in any of the above embodiments.

[0055] In this embodiment, the natural stratification type water cold storage device includes a water distributor. Therefore, the natural stratification type water cold storage device has all the beneficial effects of the water distributor, which will not be elaborated one by one here.

[0056] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water distributor, characterized in that, It includes a water distribution component; The water distribution component includes a water distribution pipe and a deflector. Both the water distribution pipe and the deflector are annular structures. The water distribution pipe and the deflector are spaced apart facing each other along the axis direction of the deflector; A plurality of spray holes are spaced apart in the circumferential direction on the side of the water distribution pipe facing the deflector. The water flow entering the water distribution pipe can be sprayed on the deflector through the spray holes.

2. The water distributor according to claim 1, wherein, The water distribution component further includes flow rectifying fins. The flow rectifying fins are vertically connected between the water distribution pipe and the deflector, and the number of the flow rectifying fins is multiple. The multiple flow rectifying fins are spaced apart one by one between any two adjacent spray holes.

3. The water distributor according to claim 1, characterized in that, The water flow velocity at each spray hole is 1.2 m / s - 1.5 m / s.

4. The water distributor according to claim 1, characterized in that, The diameter of the pipe forming the water distribution pipe is d, and the radial width of the deflector is a, where 0.7 ≤ a / d ≤ 1.

5.

5. The water distributor according to claim 2, characterized in that, The diameter of the pipe forming the water distribution pipe is d, the height of the flow rectifying fin in the axial direction of the deflector is h, where 0.5 ≤ h / d ≤ 1.0, and the width of the flow rectifying fin in the radial direction of the deflector is b, where 0.5 ≤ b / d ≤ 1.

0.

6. The water distributor according to claim 1, characterized in that, The water distribution pipe is an annular structure of a polygon formed by sequentially connecting multiple straight pipes end to end. The deflector is an annular structure of a polygon formed by sequentially connecting multiple support plates end to end. The multiple straight pipes of the water distribution pipe and the multiple straight plates of the deflector are arranged opposite to each other one by one.

7. The water distributor according to claim 1, wherein, The water distribution components are two groups spaced coaxially from inside to outside. The water distribution pipe of the water distribution component located in the inner layer is an inner ring water distribution pipe, and the water distribution pipe of the water distribution component located in the outer layer is an outer ring water distribution pipe; The water distributor further includes a central pipe and a flow splitting component. The central pipe is coaxially arranged inside the inner ring water distribution pipe. The central pipe is connected to the inner ring water distribution pipe and the outer ring water distribution pipe respectively through the flow splitting component.

8. The water distributor according to claim 7, characterized in that, The flow splitting component includes a primary flow splitting pipe, a secondary flow splitting pipe, and a tertiary flow splitting pipe; One end of the primary flow splitting pipe is connected to the central pipe, the other end of the primary flow splitting pipe is connected to the middle of the secondary flow splitting pipe, and both ends of the secondary flow splitting pipe are connected to the tertiary flow splitting pipe; The tertiary flow splitting pipe is connected to the secondary flow splitting pipe through the middle. One end of the tertiary flow splitting pipe is connected to the inner ring water distribution pipe, and the other end of the tertiary flow splitting pipe is connected to the outer ring water distribution pipe; The number of the flow splitting components is multiple. The multiple flow splitting components are evenly spaced circumferentially around the central pipe. The tertiary flow splitting pipes of the multiple flow splitting components are evenly spaced circumferentially around the central pipe.

9. The water distributor according to claim 7, characterized in that, The inner ring water distribution pipe and the outer ring water distribution pipe are used to be coaxially arranged in a cold storage tank; The area of the ring where the inner ring water distribution pipe is located is 0.2 times to 0.35 times the cross-sectional area of the cold storage tank, and the area of the ring where the outer ring water distribution pipe is located is 0.65 times to 0.8 times the cross-sectional area of the cold storage tank.

10. A natural stratified water thermal energy storage device, characterized in that, It includes the water distributor according to any one of claims 1 to 9.

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