Horizontal steam accumulator with improved axial temperature distribution

Abstract

The utility model discloses horizontal steam heat accumulator of improvement axial temperature distribution, including horizontal tank body, be located in the axial lance of horizontal tank body, connect on the air inlet pipe of axial lance, and connect on the air outlet pipe of horizontal tank body, be equipped with first nozzle on the axial lance, still include vertical steam distribution device, a plurality of vertical steam distribution device are connected on the axial lance along the axial interval of horizontal tank body, be equipped with a plurality of second nozzles on the vertical steam distribution device. Through vertical steam distribution device sets up second nozzle on the axial lance, has strengthened the mixing of steam in the axial direction, makes the axial temperature distribution of horizontal steam heat accumulator inside more uniform, has reduced the axial temperature difference effectively, has improved the structural stability and service life of equipment. Due to the improvement of temperature uniformity, make the heat exchange between steam and hot water more fully, improve the heat storage and heat release efficiency of steam heat accumulator, thereby has promoted the energy utilization efficiency, has reduced energy consumption.

Description

Technical Field

[0001] This utility model relates to the technical field of steam heat storage equipment, specifically to a horizontal steam heat storage device for improving axial temperature distribution. Background Technology

[0002] With the continuous expansion of industrial production scale, the demand for steam accumulator capacity is increasing, and horizontal steam accumulators are widely used due to their simple structure. However, as the capacity and axial length of horizontal steam accumulators become larger, the existing nozzle structure reveals significant limitations. Traditional nozzles are generally arranged only once along the axial direction, and the nozzle jets are all radial. In this case, when the accumulator length is large, it is difficult for the steam to achieve sufficient mixing in the axial direction after being injected radially, resulting in severe axial temperature unevenness.

[0003] Axial temperature non-uniformity can cause a series of problems, the most prominent of which is the potential for additional temperature stress inside the accumulator. This temperature stress can damage the structural strength of the accumulator, and long-term accumulation can lead to secondary stress damage, affecting equipment lifespan, increasing maintenance costs, and posing safety risks. Furthermore, temperature non-uniformity can also affect the heat storage and release efficiency of the steam accumulator, reducing energy utilization efficiency.

[0004] Therefore, developing a horizontal steam accumulator that can effectively enhance axial mixing intensity and reduce axial temperature difference has significant practical implications and market demand. Utility Model Content

[0005] To address the aforementioned deficiencies in existing technologies, a horizontal steam accumulator is provided that improves axial temperature distribution, enhances axial mixing intensity, thereby reducing axial temperature difference, avoiding additional temperature stress caused by uneven temperature, and improving the safety, stability, and energy utilization efficiency of the equipment.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: A horizontal steam accumulator for improving axial temperature distribution includes a horizontal tank, an axial nozzle disposed within the horizontal tank, an air inlet pipe connected to the axial nozzle, and an air outlet pipe connected to the horizontal tank; a first nozzle is provided on the axial nozzle. It also includes a vertical steam distribution device, several of which are axially connected to the axial nozzle along the horizontal tank body; and several second nozzles are provided on the vertical steam distribution device.

[0007] According to the above technical solution, the first nozzle is arranged along the radial direction of the axial nozzle, the second nozzle is arranged along the axial direction of the axial nozzle, and the steam jet direction of the second nozzle is parallel to the axis of the horizontal tank.

[0008] According to the above technical solution, the vertical steam distribution device is a single-pipe structure, with one end of the single-pipe structure connected to the axial nozzle; multiple second nozzles are spaced apart on the single pipe.

[0009] According to the above technical solution, the single-pipe structure is arranged vertically, and the bottom end of the single-pipe structure is fixedly connected to the axial nozzle.

[0010] According to the above technical solution, the vertical steam distribution device has a multi-pipe structure, including a main pipe and several branch pipes; one end of the main pipe is connected to an axial nozzle, and several branch pipes are connected to the main pipe; multiple second nozzles are distributed on the main pipe and branch pipes.

[0011] According to the above technical solution, the main pipeline is laid vertically, and its bottom end is connected to the axial nozzle; multiple branch pipelines are set at intervals from top to bottom on both sides of the main pipeline.

[0012] According to the above technical solution, when the diameter of the horizontal tank is ≤2m, the vertical steam distribution device is a single-pipe structure; When the diameter of the horizontal tank is greater than 2m, the vertical steam distribution device has a multi-pipe structure.

[0013] According to the above technical solution, the vertical steam distribution device is uniformly arranged along the length of the axial nozzle, and the spacing is determined according to the length and diameter of the horizontal tank and the required axial mixing intensity of the steam.

[0014] According to the above technical solution, the air intake pipe is connected to the middle of the axial nozzle, and the vertical steam distribution device is distributed on both sides of the axial nozzle; and the second nozzle on the vertical steam distribution device is located on the side of the vertical steam distribution device away from the air intake pipe.

[0015] According to the above technical solution, the second nozzle is a Laval type or a contraction type.

[0016] This utility model has the following beneficial effects: 1. By installing a second nozzle on the axial nozzle using a vertical steam distribution device, the mixing of steam in the axial direction is enhanced, resulting in a more uniform axial temperature distribution inside the horizontal steam accumulator. This effectively reduces the axial temperature difference, avoids additional temperature stress caused by uneven temperature, and improves the structural stability and service life of the equipment. The improved temperature uniformity allows for more thorough heat exchange between steam and hot water, increasing the heat storage and release efficiency of the steam accumulator, thereby improving energy utilization efficiency, reducing energy consumption, and meeting the requirements of energy conservation and environmental protection. Furthermore, this solution adds a second nozzle and a vertical steam distribution device to the existing nozzle structure, resulting in a relatively simple overall structure. It does not require large-scale modifications to the main structure of the horizontal steam accumulator, making it easy to retrofit and implement on existing equipment with relatively small cost increases, and possessing good market promotion value.

[0017] 2. The second nozzle is a Laval type or a converging type. The outlet shape and size of the second nozzle are optimized to achieve efficient steam injection and axial mixing, enabling the steam to achieve a higher flow velocity during injection and enhancing its penetration and turbulence effect in the axial direction. Simultaneously, the spacing of the second nozzles is rationally calculated based on the tank length and steam flow rate to ensure that the steam can achieve sufficient mixing throughout the entire axial range.

[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0020] Figure 1 It is an existing horizontal steam accumulator; Figure 2 yes Figure 1 Cross-sectional view of AA; Figure 3 This is a structural schematic diagram of an embodiment provided by this utility model; Figure 4 yes Figure 1 The first sectional view of BB; Figure 5 yes Figure 1 The second sectional view of BB; Figure 6 This is a schematic diagram of the structure of the second nozzle provided in the embodiment of this utility model; In the diagram, 1 is a horizontal tank; 2 is an axial nozzle; 3 is an air inlet pipe; 4 is an air outlet pipe; 5 is the first nozzle; 6 is a vertical steam distribution device; 6-1 is the main pipeline; 6-2 is the branch pipeline; and 7 is the second nozzle. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-6The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0022] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] Reference Figures 3-6 As shown, the present invention provides a horizontal steam accumulator for improving axial temperature distribution. It includes a horizontal tank body 1, an axial nozzle 2 disposed in the horizontal tank body, an air inlet pipe 3 connected to the axial nozzle, and an air outlet pipe 4 connected to the horizontal tank body; a first nozzle 5 is provided on the axial nozzle; the horizontal tank body is the main container for steam heat storage, and stores hot water and steam for heat storage inside.

[0025] It also includes a vertical steam distribution device 6, several vertical steam distribution devices are connected at intervals along the axial direction of the horizontal tank to the axial nozzle; several second nozzles 7 are provided on the vertical steam distribution device.

[0026] The above structure adds several vertical steam distribution devices to the existing axially arranged nozzles, each equipped with multiple second nozzles. These vertical steam distribution devices with second nozzles are located within the tank and are evenly distributed along the axial direction of the tank. The steam jet direction generated by the second nozzles on the vertical steam distribution devices is consistent with the axial direction of the tank.

[0027] By installing a second nozzle on the axial nozzle using a vertical steam distribution device, the axial mixing of steam is enhanced, resulting in a more uniform axial temperature distribution within the horizontal steam accumulator. This effectively reduces the axial temperature difference, avoids additional temperature stress caused by uneven temperature, and improves the structural stability and service life of the equipment. The improved temperature uniformity allows for more thorough heat exchange between steam and hot water, increasing the heat storage and release efficiency of the steam accumulator, thereby enhancing energy utilization efficiency, reducing energy consumption, and meeting the requirements of energy conservation and environmental protection. The second nozzle is made of a high-temperature resistant and corrosion-resistant material to extend its service life.

[0028] In the above structure, preferably, the first nozzle is arranged along the radial direction of the axial nozzle, the second nozzle is arranged along the axial direction of the axial nozzle, and the steam jet direction of the second nozzle is parallel to the axis of the horizontal tank.

[0029] In the above structure, as shown in the figure, the preferred configuration is that the air inlet pipe is connected to the middle of the axial nozzle, and the vertical steam distribution device is distributed on both sides of the axial nozzle; and the second nozzle on the vertical steam distribution device is located on the side of the vertical steam distribution device away from the air inlet pipe.

[0030] The second nozzle is either a Laval type or a converging type. The outlet shape and size of the second nozzle are optimized to achieve efficient steam injection and axial mixing, resulting in higher steam velocity during injection and enhanced axial penetration and turbulence. Simultaneously, the spacing of the second nozzles is rationally calculated based on the tank length and steam flow rate to ensure thorough mixing of the steam throughout the entire axial range.

[0031] Based on the above structure, two types of embodiments are given: In the first embodiment, when the diameter of the horizontal tank is ≤2m, the vertical steam distribution device is a single-pipe structure; one end of the single-pipe structure is connected to the axial nozzle; multiple second nozzles are spaced apart on the single pipe. Preferably, as shown in the figure, the single-pipe structure is vertically arranged, and the bottom end of the single-pipe structure is fixedly connected to the axial nozzle.

[0032] In the second embodiment, when the diameter of the horizontal tank is greater than 2m, the vertical steam distribution device has a multi-pipe structure. The multi-pipe structure includes a main pipe 6-1 and several branch pipes 6-2; one end of the main pipe is connected to an axial nozzle, and the branch pipes are connected to the main pipe; multiple second nozzles are distributed on the main pipe and the branch pipes. Preferably, as shown in the figure, the main pipe is vertically arranged, with its bottom end connected to the axial nozzle; multiple branch pipes are spaced apart from top to bottom on both sides of the main pipe.

[0033] For tanks with smaller diameters, a first-type vertical steam distribution device can be used; for tanks with larger diameters, a second-type vertical steam distribution device can be used to install more nozzles and create a stronger jet in space.

[0034] In the two embodiments described above, the vertical steam distribution devices are uniformly arranged along the length of the axial nozzles, and their spacing is determined based on the length and diameter of the horizontal tank and the required axial mixing intensity of the steam. For equipment with shorter length and smaller steam flow, the number of nozzles can be appropriately reduced and the spacing of the vertical steam distribution devices increased; for equipment with longer length and larger steam flow, the number of nozzles needs to be increased and the spacing of the vertical steam distribution devices reduced to ensure that the steam can be fully mixed in the axial direction.

[0035] The working principle of this utility model: During the steam charging process, steam from an external steam source first enters the axial nozzle. A portion of the steam is radially ejected through the existing first nozzle, heating and mixing the hot water in the tank. The remaining steam is ejected axially through a newly added second nozzle. The steam ejected from the second nozzle forms a high-speed jet in the axial direction, driving the surrounding water and steam to flow axially, thus enhancing the axial mixing intensity. During this process, sufficient heat exchange occurs between the steam and hot water, causing the temperature inside the tank to gradually become more uniform. The increased axial mixing intensity effectively reduces the axial temperature difference, avoiding additional temperature stress caused by temperature inhomogeneity. This device is suitable for solving the problem of axial temperature inhomogeneity caused by increased capacity and axial length.

[0036] Application examples As shown in the figure, the equipment parameters are as follows: the horizontal tank is 21 meters long and 3.6 meters in diameter. An axial spray pipe is arranged along the axial direction. Above the axial spray pipe, six vertical steam distribution devices with second nozzles are added, evenly distributed with a spacing of 3 meters. The vertical steam distribution devices have a multi-pipe structure, and each device is equipped with several second nozzles.

[0037] Operational Results: During actual operation, the axial temperature distribution inside the horizontal tank was monitored using temperature sensors. Results showed that, under the same steam heating conditions, compared to the unmodified equipment, the axial temperature difference decreased from 15℃ to less than 5℃, significantly improving temperature uniformity.

[0038] This device can effectively solve the problem of uneven axial temperature in different scales and application scenarios, improving equipment performance and energy efficiency. In actual production and application, the equipment parameters and structure can be reasonably adjusted and optimized according to specific needs to achieve the best performance.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A horizontal steam accumulator for improving axial temperature distribution, comprising a horizontal tank body, an axial nozzle disposed within the horizontal tank body, an air inlet pipe connected to the axial nozzle, and an air outlet pipe connected to the horizontal tank body; a first nozzle is provided on the axial nozzle. characterized in that It also includes a vertical steam distribution device, several of which are axially connected to the axial nozzle along the horizontal tank body; and several second nozzles are provided on the vertical steam distribution device.

2. The horizontal steam accumulator with improved axial temperature distribution according to claim 1, characterized in that: The first nozzle is arranged along the radial direction of the axial nozzle, and the second nozzle is arranged along the axial direction of the axial nozzle. The steam jet direction of the second nozzle is parallel to the axis of the horizontal tank.

3. The horizontal steam accumulator with improved axial temperature distribution according to claim 1, characterized in that: The vertical steam distribution device is a single-pipe structure, with one end of the single-pipe structure connected to an axial nozzle; multiple second nozzles are spaced apart on the single pipe.

4. The horizontal steam accumulator with improved axial temperature distribution according to claim 3, characterized in that: The single-pipe structure is vertically arranged, and the bottom end of the single-pipe structure is fixedly connected to the axial nozzle.

5. The horizontal steam accumulator for improving axial temperature distribution according to claim 1, characterized in that: The vertical steam distribution device has a multi-pipe structure, including a main pipe and several branch pipes; one end of the main pipe is connected to an axial nozzle, and several branch pipes are connected to the main pipe; multiple second nozzles are distributed on the main pipe and branch pipes.

6. The horizontal steam accumulator for improving axial temperature distribution according to claim 5, characterized in that: The main pipeline is laid vertically, with its bottom end connected to the axial nozzle; multiple branch pipelines are installed at intervals from top to bottom on both sides of the main pipeline.

7. The horizontal steam accumulator for improving axial temperature distribution according to claim 1, characterized in that: When the diameter of the horizontal tank is ≤2m, the vertical steam distribution device is a single-pipe structure; When the diameter of the horizontal tank is greater than 2m, the vertical steam distribution device has a multi-pipe structure.

8. The horizontal steam accumulator for improving axial temperature distribution according to claim 1, characterized in that: The vertical steam distribution devices are evenly arranged along the length of the axial nozzles, and their spacing is determined according to the length and diameter of the horizontal tank and the required axial mixing intensity of the steam.

9. The horizontal steam accumulator for improving axial temperature distribution according to claim 1, characterized in that: The air intake pipe is connected to the middle of the axial nozzle, and the vertical steam distribution device is distributed on both sides of the axial nozzle; and the second nozzle on the vertical steam distribution device is located on the side of the vertical steam distribution device away from the air intake pipe.

10. The horizontal steam accumulator for improving axial temperature distribution according to claim 1, characterized in that: The second nozzle is of the Laval type or the contraction type.

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