Static impeller water distribution device for thermal storage in the oblique temperature layer

Abstract

The utility model provides a static impeller water distribution device for storing heat in an inclined temperature layer, the device comprising a bottom disc, six blades, a top disc, a conical reducing component and a conical cylinder located at the center of the top disc; the utility model generates small turbulence under the action of a static impeller composed of blades, a middle conical cylinder, upper and lower discs and the top conical reducing component, and slowly rises under the guidance of the blades, maintaining good water flow uniformity, which is conducive to forming a stable inclined temperature layer structure in the heat storage tank. During the heat storage process, by adjusting the layout of the static impeller and the shape and size of the blades, the flow state of the water flow can be further optimized, so that the hot water can be diffused more evenly in the heat storage tank, the disturbance to the thickness of the inclined temperature layer can be reduced, and the heat storage efficiency can be improved. The device is not only suitable for waste heat recovery in thermal power plants, but can also be widely used in other industrial occasions requiring large-scale thermal energy storage.

Description

Technical Field

[0001] The utility model relates to a static impeller water distribution device for heat storage in an inclined temperature layer for a heat storage heating system, and in particular to a water distribution technology used in a high-efficiency heat storage system for winter heating using waste heat generated during summer power generation. Background Art

[0002] The heat abandoned during power generation of thermal power units accounts for about 50% of the total heat of the units. This part of the abandoned heat is used for heating during winter power generation, achieving winter cogeneration and achieving good economic and social benefits. In order to achieve summer cogeneration, the waste heat of thermal power plants in summer is stored to further expand the heating area in winter. Traditional thermal energy storage methods often face the problem of low heat storage efficiency. Therefore, a device is needed that can improve the heat storage efficiency of the heat storage pool, reduce the thickness of the inclined temperature layer, and achieve rapid water distribution.

[0003] In summer, the demand for heat disappears, and the heat wasted by thermal power units can only be discharged into the atmosphere through cooling towers.

[0004] Based on this, the excess heat in the summer will be stored through cross-seasonal energy storage devices. When storing heat, the problem of how to improve the heat storage efficiency of the heat storage pool will be encountered. Utility Model Content

[0005] The utility model aims to design a static impeller water distribution device for storing heat in a thermocline layer, in order to optimize the thickness of the thermocline layer and improve the heat storage efficiency of the heat storage pool.

[0006] To achieve the above-mentioned purpose, the utility model provides a static impeller water distribution device for inclined temperature layer heat storage, which includes a bottom disc, six blades, a top disc, a conical reducing component and a conical cylinder located at the center of the top disc; a conical cylinder is arranged in the central part of the top disc, the six blades are arranged radially along the center of the conical cylinder and the six blades are evenly fixed on the bottom disc, the top disc is located above the blades and an opening is provided in the center, the conical reducing component is located above the top disc and the opening is connected to the bottom of the conical reducing component around it.

[0007] Furthermore, the angle between each blade and the bottom disc ranges from 15 to 75 degrees.

[0008] Furthermore, each blade is at an angle of 45 degrees to the bottom disc.

[0009] The utility model generates small turbulence under the action of a static impeller composed of blades, a middle conical cylinder, two upper and lower discs and a conical reducer at the top, and slowly rises under the guidance of the blades, maintaining good uniformity of water flow, which is conducive to forming a stable inclined temperature layer structure in the heat storage tank. During the heat storage process, by adjusting the layout of the static impeller and the shape and size of the blades, the flow state of the water flow can be further optimized, so that the hot water can be diffused more evenly in the heat storage tank, reducing the disturbance to the thickness of the inclined temperature layer and improving the heat storage efficiency. The device is not only suitable for waste heat recovery in thermal power plants, but can also be widely used in other industrial occasions requiring large-scale thermal energy storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0011] Figure 1 This is a front view of the utility model of the static impeller water distribution device for inclined temperature layer heat storage;

[0012] Figure 2 It is a three-dimensional obstructed view of the utility model of the static impeller water distribution device for the inclined temperature layer heat storage;

[0013] Figure 3 This is a top view of the utility model of the static impeller water distribution device for heat storage in the inclined temperature layer;

[0014] Figure 4 This is a perspective view of the utility model of the static impeller water distribution device for the inclined temperature layer heat storage;

[0015] Figure 5 This is a schematic diagram of the utility model used under heat storage conditions.

[0016] The above figures are only examples of possible ways to implement the present invention and do not limit the scope of protection of the present invention. The size of each element in the figure can be adjusted according to the actual application needs, and the shape and number of the elements are not limited to the examples shown; DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with specific embodiments and drawings. In the following description, many details are explained to facilitate a comprehensive understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from those described here. Those skilled in the art can make similar generalizations and interpretations based on actual application scenarios without violating the essential connotation of the present invention. Therefore, the protection scope of the present invention should not be limited by the content of the specific embodiment.

[0018] Unless otherwise defined, all technical and scientific terms used in this document are consistent with the meanings commonly understood by technicians in the technical field of this application; the terms used in this document are only for describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification, claims and the above-mentioned figure descriptions of this application and any of their modified forms are intended to cover non-exclusive inclusions.

[0019] Reference Figure 1 and Figure 2 The utility model provides a static impeller water distribution device for heat storage in an inclined temperature layer, the device comprising a bottom disc 4, six blades 3, a top disc 2, a conical reducing component 1 and a conical cylinder 5 located at the center of the bottom disc;

[0020] Reference Figure 3 , showing the arrangement of the tapered reducer 1, the top disc 2 and part of the blades 3 and the tapered cylinder 5 on the bottom disc 4;

[0021] Reference Figure 4 , showing the specific installation method of the tapered reducer 1, the top disc 2 and the blades fixed on the bottom disc 4;

[0022] The entire water distribution device is made of metal material, and the surface is treated with a coating process (including nano-processing) to achieve corrosion resistance, wear resistance and improved smoothness. The function of reducing the roughness of the inner wall of the water distribution device is achieved by improving the smoothness.

[0023] A conical tube 5 is provided at the center of the bottom disc 4, the purpose of which is to guide and initially disperse the turbulence when the water flow hits.

[0024] The six blades 3 are arranged radially along the center of the conical cylinder 5 at the bottom of the water distributor, and gaps are left between adjacent blades 3. The shape of the blades 3 is designed to guide the water flow to generate small turbulence and reduce the generation of large turbulence. The six blades 3 are evenly fixed on the bottom disc 4. The angle between each blade 3 and the bottom disc 4 is between 15 and 75 degrees. Preferably, each blade 3 is at a 45-degree angle to the bottom disc 4. This specific angle layout helps to effectively break the large-scale turbulence after the first impact and generate more small turbulence, thereby improving the heat transfer efficiency and reducing the disturbance to other height liquid levels.

[0025] The top disc 2 is located above the blades 3 and has an opening in the center. The opening is used to connect the conical reducing component 1, which is responsible for expanding the water flow entering the device to reduce its flow rate.

[0026] During the heat storage process, when hot water passes through the static impeller composed of six blades 3, the middle conical cylinder 5, the upper and lower discs and the top conical reducer 1, a small turbulence is generated under the action of the impeller, and it rises slowly under the guidance between the blades, maintaining a good uniformity of water flow, which is conducive to forming a stable inclined temperature layer structure in the heat storage tank.

[0027] During the heat storage process, by adjusting the layout of the static impeller and the shape and size of the blades, the flow state of the water can be further optimized, so that the hot water can be diffused more evenly in the heat storage tank, reducing the disturbance to the thickness of the thermocline layer and improving the heat storage efficiency.

[0028] The device is suitable for the water distribution process of the inclined temperature layer hot water storage device. It reduces the influence on the thickness of the inclined temperature layer by the uniformity of water distribution, improves the heat storage efficiency of the hot water pool, and reduces the unit construction cost of the heat storage pool.

[0029] In the description of the embodiments of the present application, unless there are clear and explicit provisions and limitations, technical terms such as "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or forming a whole; it can also be a mechanical connection. For ordinary technicians in this field, they can understand the specific meanings of these terms in the embodiments of the present application based on the specific circumstances.

[0030] This application uses specific words to describe the embodiments of this application. For example, "one embodiment", "an embodiment" and "some embodiments" mean a certain feature, structure or characteristic associated with at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different places in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of this application can be appropriately combined.

[0031] Although the utility model is publicly presented in the form of preferred embodiments, it is not intended to limit the utility model. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the utility model. Therefore, as long as it does not deviate from the technical solution of the utility model, any modification, equivalent change and modification made to the above embodiments in accordance with the technical essence of the utility model are within the scope of protection defined by the claims of the utility model.

Claims

1. A static impeller water distribution device for heat storage in a temperature-slope layer, characterized in that: The device includes a bottom disc, six blades, a top disc, a conical diameter reducing component and a conical cylinder located at the center of the bottom disc; a conical cylinder is arranged at the center of the bottom disc, the six blades are arranged radially along the center of the conical cylinder and the six blades are evenly fixed on the bottom disc, the top disc is located above the blades and an opening is provided at the center, the conical diameter reducing component is located above the top disc and the opening is connected to the bottom of the conical diameter reducing component around it.

2. A static impeller water distribution device for temperature-slope heat storage according to claim 1, characterized in that: The angle between each blade and the bottom disc ranges from 15 to 75 degrees.

3. The static impeller water distribution device for temperature-slope heat storage according to claim 1 is characterized in that: The angle between each blade and the bottom disc is 45 degrees.

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