Thermocline type horizontal multi-tank water heat storage system

Abstract

The invention discloses a thermocline type horizontal multi-tank water heat storage system which comprises a horizontal heat storage box body, an upper water distributor, a lower water distributor and a flow guide plate group are designed in the horizontal heat storage box body, two flow guide channels are designed in the horizontal heat storage box body to divide the horizontal heat storage box body into three water storage tanks, and the water storage tanks are communicated in series. And the water outlets of the upper water distributor and the lower water distributor respectively face the upper inner wall and the lower inner wall of the horizontal heat storage box body. The device is scientific and reasonable in design, space can be saved, water is layered for multiple times in the heat storage device, and therefore the heat storage effect is improved, the heat energy conversion efficiency is improved, and the construction and maintenance cost of the device can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal energy storage systems, and in particular to a temperature-slope layer type horizontal multi-tank water thermal storage system. Background Art

[0002] In modern society, the storage and utilization of energy has become an important research field. Thermal energy storage system is a technology that stores energy in the form of thermal energy and releases it when needed. This technology is of great significance in terms of energy utilization efficiency and environmental protection. At the same time, hydraulic engineering and building energy conservation are also important related fields, involving the utilization of water resources and the energy-saving design of buildings. Existing thermal energy storage systems mainly include hot water storage systems and phase change material storage systems. Hot water storage systems store thermal energy by storing hot water, while phase change material storage systems store and release thermal energy by utilizing the phase change of phase change materials. In addition, there are some other technologies, such as compressed air energy storage systems and pumped storage systems. However, there are still some problems in the practical application of existing thermal energy storage systems. First, the existing hot water storage system usually takes up a lot of space, which is a big limitation for urban areas with tight land resources. Secondly, although the existing phase change material storage system can save space, its heat storage capacity and efficiency need to be improved due to the performance limitations of the phase change material. In addition, the existing thermal energy storage system still has problems such as heat loss and low energy conversion efficiency during operation. Therefore, how to design a thermal energy storage system that is efficient, energy-saving, and space-efficient is a major challenge facing current technology.

[0003] In order to improve the heat storage capacity and effect of the water thermal storage system and meet the load requirements during heating, the existing composite heating mode often couples the inclined temperature layer water thermal storage equipment to the ground source heat pump system. The inclined temperature layer water thermal storage equipment can use the characteristics of different densities of water at different temperatures to achieve the natural stratification of high and low temperature water, forming a uniformly stratified temperature section in the energy storage tank. In addition, the water thermal storage equipment has a simple structure and low cost, making it the most effective and economical thermal storage mode.

[0004] Most of the existing water thermal storage equipment adopts a single vertical water storage tank or a cylindrical water storage tank, which has the problems of difficult site selection and high investment cost due to its large size and high water pressure; in the existing inclined temperature layer type water thermal storage equipment, although the water storage tank forms a relatively stable inclined temperature layer between the upper high-temperature water zone and the lower low-temperature water zone, there is a turbulent flow below the inclined temperature layer due to the interference of the inlet flow field, which will bring part of the energy in the inclined temperature layer to the lower part, making the temperature stratification in the water storage tank uneven, resulting in the heat storage effect of the existing inclined temperature layer type water thermal storage equipment is not ideal; and most of the existing horizontal water thermal storage equipment lacks a guide plate in the middle water storage tank, resulting in uneven temperature stratification and reduced heat storage efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a horizontal multi-tank water thermal storage system with an inclined temperature layer. Compared with the prior art, the technical solution of the present invention solves the technical problems raised in the background technology. To achieve the above purpose, the present invention provides the following technical solution: a horizontal multi-tank water thermal storage system with an inclined temperature layer, comprising a horizontal thermal storage box, wherein an upper water distributor, a lower water distributor and a guide plate group are arranged in the horizontal thermal storage box, wherein the interior of the horizontal thermal storage water tank is divided into a plurality of water storage tanks by a plurality of guide channels, and the water storage tanks are connected in series in sequence.

[0006] Preferably, the upper water distributor is installed on one side of the horizontal heat storage tank through a high-temperature water pipe, and the lower water distributor is installed on the other side of the horizontal heat storage tank through a low-temperature water pipe. Both the upper water distributor and the lower water distributor are provided with water outlets, the water outlet of the upper water distributor faces the upper inner wall of the horizontal heat storage tank, and the water outlet of the lower water distributor faces the lower inner wall of the horizontal heat storage tank.

[0007] Preferably, the guide channel includes a left guide channel and a right guide channel, and the guide plate group is arranged in a water storage tank separated by the left guide channel and the right guide channel. The guide plate group is composed of two guide plates, including an upper guide plate and a lower guide plate, and guide holes are provided on the upper guide plate and the lower guide plate.

[0008] Preferably, the left guide channel is composed of a left partition and a left baffle, the left partition is connected to the lower inner wall of the horizontal heat storage box, the left baffle is connected to the upper inner wall of the horizontal heat storage box, and the connection between the left partition and the left baffle and the inner wall of the horizontal heat storage box is fitted and waterproof.

[0009] Preferably, the right guide channel is composed of a right partition and a right baffle, the right partition is connected to the upper inner wall of the horizontal heat storage box, the right baffle is connected to the lower inner wall of the horizontal heat storage box, and the connection between the right partition and the right baffle and the inner wall of the horizontal heat storage box is fitted and waterproof.

[0010] Preferably, the horizontal heat storage box is externally wrapped with a heat-insulating layer.

[0011] Technical effects and advantages of the present invention: High space utilization: The inclined temperature layer type horizontal multi-tank water heat storage system of the present invention can set the heat storage equipment in the basement or garage of a building through reasonable equipment design, which greatly saves the equipment floor space and solves the problem that the hot water storage system in the prior art needs to occupy a large amount of space. It is particularly suitable for urban areas with limited land resources;

[0012] Better heat storage effect: The device design of the present invention is scientific and reasonable. The setting of multiple water storage tanks can make water stratified multiple times in the heat storage device, thereby improving the heat storage capacity and efficiency, overcoming the problem that the heat storage capacity and efficiency of the existing phase change material storage system need to be improved due to the performance limitations of the phase change material;

[0013] Reduce construction costs: Since the equipment of the present invention can be installed in a building basement or garage, etc., it does not need to occupy land resources separately, so it can effectively reduce the construction cost of the thermal storage equipment and has good economic benefits;

[0014] High operating efficiency: During the operation of the equipment of the present invention, the heat loss can be effectively reduced and the energy conversion efficiency can be improved through the optimized design of the guide plate group, thus overcoming the problems of heat loss and low energy conversion efficiency during the operation of the prior art;

[0015] Strong adaptability: The inclined temperature layer type horizontal multi-tank water heat storage system of the present invention can flexibly adjust the number and size of water storage tanks according to actual needs, adapt to heat storage systems of different scales and needs, and has good adaptability and flexibility. In the present invention, since the opening of the upper water distributor faces the upper inner wall of the horizontal heat storage tank, and the opening of the lower water distributor faces the lower inner wall of the horizontal heat storage tank, when the water is injected into the water storage tank, it will not directly mix with the water in the water storage tank, but will first be impacted and buffered by the inner wall of the horizontal heat storage tank to form static pressure, thereby avoiding the mixing of cold and hot fluids, thereby improving the heat storage efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 for Figure 1 The main view of the partial section.

[0018] In the figure, 1. horizontal heat storage box; 2. left guide channel; 3. upper guide plate; 4. lower guide plate; 5. right guide channel; 6. upper water distributor; 7. high-temperature water pipeline; 8. lower water distributor; 9. low-temperature water pipeline; 2-1. left partition; 2-2. left baffle; 5-1. right partition; 5-2. right baffle. DETAILED DESCRIPTION

[0019] In order to make the technical means for realizing the present invention, the creative features, the objectives and effects to be achieved easy to understand, the present invention is further explained below in conjunction with specific diagrams. In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection or a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two components.

[0020] Example

[0021] like Figure 1 and Figure 2 As shown, a horizontal multi-tank water heat storage system of inclined temperature layer type includes a horizontal heat storage box 1, in which an upper water distributor 6, a lower water distributor 8 and a guide plate group are arranged, the horizontal heat storage box is wrapped with an insulation layer on the outside, and the inside is divided into three water storage tanks by a left guide channel 2 and a right guide channel 5, and the water storage tanks are connected in series in sequence, the upper water distributor 6 is installed on one side of the horizontal heat storage box 1 through a high-temperature water pipe 7, and the lower water distributor 6 is installed on the other side of the horizontal heat storage box 1 through a low-temperature water pipe 9, and water outlets are provided on the upper water distributor 6 and the lower water distributor 8, the water outlet of the upper water distributor 6 faces the upper inner wall of the horizontal heat storage box 1, and the water outlet of the lower water distributor 8 faces the lower inner wall of the horizontal heat storage box 1.

[0022] The guide plate group is arranged in the water storage tank separated by the left guide channel 2 and the right guide channel 5. The guide plate group consists of two guide plates, including an upper guide plate 3 and a lower guide plate 4. The upper guide plate 3 and the lower guide plate 4 are both provided with guide holes.

[0023] like Figure 2 As shown, the left guide channel 2 is composed of a left partition 2-1 and a left baffle 2-2. The left partition 2-1 is connected to the lower inner wall of the horizontal heat storage box 1, and the left baffle 2-2 is connected to the upper inner wall of the horizontal heat storage box 1. The connection between the left partition 2-1 and the left baffle 2-2 and the inner wall of the horizontal heat storage box 1 is fitted and waterproof.

[0024] The right guide channel 5 is composed of a right partition plate 5-1 and a right baffle plate 5-2. The right partition plate 5-1 is connected to the upper inner wall of the horizontal heat storage box 1, and the right baffle plate 5-2 is connected to the lower inner wall of the horizontal heat storage box 1. The connection between the right partition plate 5-1 and the right baffle plate 5-2 and the inner wall of the horizontal heat storage box 1 is fitted and waterproof.

[0025] There is an appropriate distance between the partition and the baffle, and the upper and lower ends thereof are respectively at an appropriate distance from the upper and lower inner walls of the horizontal heat storage box 1, and the upper guide plate 3 and the lower guide plate 4 are at an appropriate distance from the upper and lower inner walls of the horizontal heat storage box 1.

[0026] During heat storage, high-temperature water enters the horizontal heat storage tank 1 from the water outlet of the upper water distributor 6, and the low-temperature water in the horizontal heat storage tank 1 overflows from the bottom into the right guide channel 5, and then passes through the top of the right baffle 5-2 through the upper guide plate 3 into the middle water storage tank, and then passes through the lower guide plate 4 into the left guide channel 2, and finally passes through the top of the left partition 2-1, and flows out of the horizontal heat storage tank 1 through the lower water distributor 8 and the low-temperature water pipe 9. When the entire horizontal heat storage tank 1 is filled with the required hot water, the heat storage process ends.

[0027] When releasing heat, low-temperature water enters the lower water distributor 8 from the low-temperature water pipe 9, and flows into the bottom of the horizontal heat storage tank 1 through the water outlet of the lower water distributor 8, while the high-temperature water in the horizontal heat storage tank 1 overflows through the left partition 2-1 into the left guide channel 2, and then passes through the bottom of the left baffle 2-2 through the lower guide plate 4 to enter the middle water storage tank, and then passes through the upper guide plate 3 to enter the right guide channel 5, and finally passes through the bottom of the right partition 5-1 and flows out of the horizontal heat storage tank 1 through the upper water distributor 6 and the high-temperature water pipe 7. When all the hot water in the entire horizontal heat storage tank 1 flows out, the heat release process ends.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A horizontal multi-tank water thermal storage system with an inclined temperature layer, comprising a horizontal thermal storage box, characterized in that: The horizontal heat storage tank is provided with an upper water distributor, a lower water distributor and a guide plate group. The interior of the horizontal heat storage tank is divided into a plurality of water storage tanks by a plurality of guide channels, and the water storage tanks are connected in series in sequence.

2. The horizontal multi-tank water thermal storage system of inclined temperature layer type according to claim 1 is characterized in that: The upper water distributor is installed on one side of the horizontal heat storage tank through a high-temperature water pipe, and the lower water distributor is installed on the other side of the horizontal heat storage tank through a low-temperature water pipe. Both the upper water distributor and the lower water distributor are provided with water outlets. The water outlet of the upper water distributor faces the upper inner wall of the horizontal heat storage tank, and the water outlet of the lower water distributor faces the lower inner wall of the horizontal heat storage tank.

3. The horizontal multi-tank water thermal storage system of inclined temperature layer type according to claim 1, characterized in that: The guide channel includes a left guide channel and a right guide channel. The guide plate group is arranged in a water storage tank separated by the left guide channel and the right guide channel. The guide plate group consists of two guide plates, including an upper guide plate and a lower guide plate. Guide holes are provided on the upper guide plate and the lower guide plate.

4. The horizontal multi-tank water thermal storage system of inclined temperature layer type according to claim 3 is characterized by: The left guide channel is composed of a left partition and a left baffle, the left partition is connected to the lower inner wall of the horizontal heat storage box, the left baffle is connected to the upper inner wall of the horizontal heat storage box, and the connection between the left partition and the left baffle and the inner wall of the horizontal heat storage box is fitted and waterproof.

5. The horizontal multi-tank water thermal storage system of inclined temperature layer type according to claim 3 is characterized by: The right guide channel is composed of a right partition and a right baffle, the right partition is connected to the upper inner wall of the horizontal heat storage box, the right baffle is connected to the lower inner wall of the horizontal heat storage box, and the connection between the right partition and the right baffle and the inner wall of the horizontal heat storage box is fitted and waterproof.

6. A horizontal multi-tank water thermal storage system of inclined temperature layer type according to any one of claims 1 to 5, characterized in that: The horizontal heat storage box is externally wrapped with a heat preservation layer.

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