Tubular water distribution device of thermocline type sensible heat storage heating system
By designing a multi-stage capacity expansion and flow diversion structure tube water distribution device in thermal power plants, the problem that traditional water distribution devices are difficult to quickly complete large flow distribution is solved, and an efficient and uniform water distribution process is achieved, and the heat storage efficiency and response speed are improved.
Patent Information
- Application Number
- CN202421506827.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-28
AI Technical Summary
Traditional water distribution devices are difficult to complete the water distribution task of large flow in a short time in thermal power plants, resulting in low heat storage efficiency, slow response speed and high unit project cost.
A tube-type water distribution device is designed, including a conical cylinder, a capacity expansion distributor, a flow tube and a flow branch pipe. Through a multi-stage capacity expansion design and a flow diversion structure, a planar jet with a large flow rate and a low flow rate is realized, and water is quickly and efficiently distributed to the heat storage tank.
The rapid water distribution function and heat storage efficiency of the inclined temperature strata heat storage tank are improved, the disturbance to the inclined temperature strata is reduced, the more uniform water distribution effect is achieved, and the weight of the water distribution device is reduced.
Smart Images
Figure CN222761045U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of thermal energy storage and management technology, and is particularly suitable for inclined temperature layer sensible heat storage heating systems in thermal power plants and other industrial applications. The technology involves storing and distributing thermal energy in large thermal storage tanks by using water as a heat carrier, so as to provide continuous and efficient heat supply during peak demand. More specifically, the utility model relates to a tubular water distribution device for improving and optimizing the water layer water distribution process in a thermal storage tank, reducing heat energy losses, and improving the thermal efficiency and performance of the entire system. Background Art
[0002] With the guidance of national policies on energy conservation and carbon reduction, the demand for large-scale heat storage is growing. One of the core equipment of the sensible heat inclined layer heat storage equipment is the water distribution device.
[0003] The traditional water distribution method has a small water distribution capacity and large water distribution resistance, making it difficult to complete large-flow water distribution tasks in a short period of time. This directly restricts the efficiency and response speed of large-scale heat storage in thermal power plants and increases the unit project cost. Utility Model Content
[0004] This patent and utility model provide a tubular water distribution device for an inclined temperature layer sensible heat storage heating system. The main purpose is to improve the performance of the inclined temperature layer heat storage tank in terms of rapid water distribution function and heat storage efficiency, improve water distribution uniformity, reduce disturbance to the inclined temperature layer, and be able to provide a larger water flow rate to meet the requirements of completing water distribution in a shorter time. By optimizing the water outlet structure and flow channel design, the water distribution performance under the demand of large-scale heat storage water distribution is improved, and the weight of the water distribution device is reduced. The device is particularly suitable for the field of large-scale heat storage, and plays a key role in the inter-seasonal heat storage system of thermal power plants.
[0005] During the summer, a large amount of waste heat generated by thermal power plants is stored on a large scale using water as the heat carrier medium and supplied to heat users in winter. In order to meet the demand for rapid water distribution during the heat storage period and reduce the impact of the oblique temperature layer through low-disturbance water distribution, the overall heat storage efficiency is improved.
[0006] In order to achieve the above-mentioned purpose, the utility model provides a tubular water distribution device for a sensible heat storage heating system of an inclined temperature layer, comprising a conical cylinder, an expansion distributor, a guide pipe and a guide branch pipe, wherein the expansion distributor is a cylinder, the bottom of the cylinder is provided with a conical cylinder of the expansion distributor, and the sides of the expansion distributor are respectively provided with connecting holes connected to the guide pipe, and the end of each guide pipe away from the expansion distributor is connected to the middle of the guide branch pipe, and each guide pipe is evenly divided into three equal parts along the water flow direction, and the pipe diameter gradually increases from the side close to the expansion distributor to the side away from the expansion distributor, and the guide pipe and the guide branch pipe are connected. The pipe diameters at the connection points of the branch pipes are the same. The diversion branch pipe adopts a circular cross-section pipe with an arc. The ends of the diversion branch pipe on both sides are blocked and sealed. Along the flow direction of water in the diversion branch pipe, a first proximal water distribution port, a second proximal water distribution port, a first distal water distribution port and a second distal water distribution port are respectively provided on both sides of the pipe. The water outlet directions of the first proximal water distribution port, the second proximal water distribution port, the first distal water distribution port and the second distal water distribution port are parallel to the plane of the thermocline layer. Water flows in from one end in the middle of the diversion branch pipe and flows out from the first proximal water distribution port, the second proximal water distribution port, the first distal water distribution port and the second distal water distribution port.
[0007] Furthermore, the widths of the first distal water distribution inlet and the second distal water distribution inlet are larger than those of the first proximal water distribution inlet and the second proximal water distribution inlet.
[0008] This technology involves storing and distributing thermal energy in a large thermal storage tank by using water as a heat carrier so as to provide a continuous and efficient heat supply during peak demand periods, and is used to improve and optimize the water layer distribution process in the thermal storage tank, reduce thermal energy losses, and improve the thermal efficiency and performance of the entire system. The utility model also includes an optimized design of each of the above components to ensure that the entire system can achieve the expected improvement in thermal efficiency and reduction in the thickness of the inclined temperature layer in actual applications. Through the above design, the tubular water distribution device of the utility model can achieve an efficient and uniform water distribution process in the inclined temperature layer sensible heat storage heating system, providing an optimized technical solution for waste heat recovery in thermal power plants and thermal energy storage and utilization in other corresponding scenarios, and can also be widely used in other industrial occasions requiring large-scale thermal energy storage. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Attached Figure 1 It is a top view of the tubular water distribution device of the inclined temperature layer sensible heat storage heating system.
[0010] Attached Figure 2 It is a side view of a tubular water distribution device of a temperature-slope sensible heat storage heating system;
[0011] Attached Figure 3 This is a three-dimensional obstruction view of the tubular water distribution device of the inclined temperature layer sensible heat storage heating system. DETAILED DESCRIPTION
[0012] 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.
[0013] 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.
[0014] Reference Figures 1 to 3 The present embodiment provides a tubular water distribution device for a temperature-slope layer sensible heat storage heating system, which is mainly composed of the following components: a conical cylinder 1, an expansion distributor 2, an expansion distributor conical cylinder 21, a guide pipe 3, a guide branch pipe 4, a first proximal water distribution port 5, a second proximal water distribution port 6, a first distal water distribution port 7, and a second distal water distribution port 8.
[0015] Conical tube 1: As the water inlet, it has a cross-sectional area design from small to large to reduce the water flow velocity during water distribution.
[0016] Expansion distributor 2 and its expansion distributor cone 21: The expansion distributor 2 is a cylinder, and the bottom of the cylinder is provided with an expansion distributor cone 21. The sides of the expansion distributor 2 are respectively provided with connecting holes connected to the guide pipe 3, which are responsible for further diverting and guiding the water flow and reducing the turbulence generated in the water flow.
[0017] There are four guide pipes 3 in total: the end of each guide pipe 3 away from the expansion distributor is connected to the middle of the guide branch pipe 4, each guide pipe 3 is evenly divided into three parts along the water flow direction, and the pipe diameter gradually increases from the side close to the expansion distributor 2 to the side away from the expansion distributor 2. The pipe diameter at the connection between the guide pipe 3 and the guide branch pipe 4 is the same to balance the flow velocity and pressure and ensure the uniformity of the water distribution effect.
[0018] The end of the guide pipe 3 away from the expansion distributor 2 is connected to the guide branch pipe 4. The guide branch pipe 4 adopts a circular cross-section pipe with an arc. The ends of the guide branch pipe 4 on both sides are blocked and sealed. Along the flow direction of water in the guide branch pipe 4, the first proximal water distribution port 5, the second proximal water distribution port 6, the first distal water distribution port 7 and the second distal water distribution port 8 are respectively provided on both sides of the pipe. The water outlet directions of the first proximal water distribution port 5, the second proximal water distribution port 6, the first distal water distribution port 7 and the second distal water distribution port 8 are parallel to the plane of the thermocline layer. Water flows in from one end of the middle part of the guide branch pipe 4, and flows to the first proximal water distribution port 5 and the second proximal water distribution port 6, as well as the first distal water distribution port 7 and the second distal water distribution port 8, respectively, to realize a horizontal jet with large flow and low flow rate, and complete the function of rapid water distribution.
[0019] The device adopts a multi-stage expansion design to minimize the water flow velocity. Through the design of the expansion distributor cone 21, the water flow can be effectively guided during the distribution process, while reducing the generation of turbulence.
[0020] During the heat storage period, hot water (heat carrier medium) flows in from the side of the conical cylinder 1 with a smaller cross-sectional area. As its cross-sectional area gradually expands, the water flow velocity is reduced, and the hot water flows out from the side of the conical cylinder 1 with a larger cross-sectional area and enters the expansion distributor 2. The expansion distributor conical cylinder 21 guides and distributes the water flow to reduce turbulence, and the water flow is evenly distributed to the four guide pipes 3.
[0021] like Figure 3 As shown, Figure 3 It is a three-dimensional blocked view of the tubular water distribution device of the inclined temperature layer sensible heat storage heating system; it shows the connection schematic diagram of the expansion distributor 2, the guide pipe 3 and the guide branch pipe 4, the first proximal water distribution port 5, the second proximal water distribution port 6, the first distal water distribution port 7 and the second distal water distribution port 8, and the position details of the expansion distributor cone 21 are shown through a partial section.
[0022] Each guide pipe 3 is divided into three equal parts. Along the flow direction of water, the diameter of each section gradually expands to ensure that the water flow resistance is minimized and finally becomes the same as the diameter of the guide branch pipe 4. Taking one of the guide pipes 3 as an example, after water enters from the middle guide branch pipe 4, it flows into both sides of the guide branch pipe 4 respectively. On the guide branch pipe 4, the water first flows out from the first proximal water distribution port 5 and the second proximal water distribution port 6, and then continues to flow to and flows out from the first distal water distribution port 7 and the second distal water distribution port 8. The outflow width of the first distal water distribution port 7 and the second distal water distribution port 8 is larger than that of the first proximal water distribution port 5 and the second proximal water distribution port 6 to balance the water flow resistance.
[0023] Through the above-mentioned multi-stage expansion and diversion structure, this embodiment can achieve a large flow, low velocity planar jet, quickly and efficiently distribute water to the heat storage tank, reduce the water distribution thickness of the inclined temperature layer, and improve the heat storage efficiency.
[0024] In another embodiment, if Figure 3 As shown, the expansion distributor 2 and the guide pipe 3 of the tubular water distribution device can be adjusted according to the water distribution scale to meet the water distribution needs of heat storage tanks of different scales. For example, the inclination angle of the expansion distributor conical cylinder 21 and the length and diameter of each guide pipe can be adjusted according to actual needs to optimize water flow distribution and water distribution effect.
[0025] 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.
[0026] 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.
[0027] 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 tubular water distribution device for a temperature-slope sensible heat storage heating system, characterized in that: The invention comprises a conical cylinder, an expansion distributor, a guide pipe and a guide branch pipe, wherein the expansion distributor is a cylinder, the bottom of the cylinder is provided with a conical cylinder of the expansion distributor, the sides of the expansion distributor are respectively provided with connection holes connected to the guide pipe, the end of each guide pipe away from the expansion distributor is connected to the middle of the guide branch pipe, each guide pipe is evenly divided into three equal parts along the water flow direction, the pipe diameter size gradually increases from the side close to the expansion distributor to the side away from the expansion distributor, the pipe diameter size at the connection between the guide pipe and the guide branch pipe is the same, the guide branch pipe A circular cross-section pipe with an arc is used, and the ends on both sides of the diversion branch pipe are blocked and sealed. A first proximal water distribution port, a second proximal water distribution port, a first distal water distribution port and a second distal water distribution port are respectively provided on both sides of the diversion branch pipe. The water outlet directions of the first proximal water distribution port, the second proximal water distribution port, the first distal water distribution port and the second distal water distribution port are parallel to the plane of the inclined temperature layer. The flow direction of water in the diversion branch pipe is that water flows in from one end in the middle of the diversion branch pipe and flows out from the first proximal water distribution port, the second proximal water distribution port, the first distal water distribution port and the second distal water distribution port.
2. The tubular water distribution device of the inclined temperature layer sensible heat storage heating system according to claim 1 is characterized in that: The first distal water distribution inlet and the second distal water distribution inlet are wider than the first proximal water distribution inlet and the second proximal water distribution inlet.