Steam waste heat recovery apparatus

Abstract

The utility model discloses a steam waste heat recovery equipment, include: box, its inside is divided into first cavity, second cavity, third cavity by heat insulating plate, first through pipe is equipped with in the lateral wall of first cavity, second cavity, third cavity, communication subassembly, it includes a plurality of second through pipe of communication first cavity, second cavity, third cavity, a plurality of second through pipe are in parallel, wherein, the second through pipe end of third cavity inside is connected with first shower nozzle, second shower nozzle, it is located first shower nozzle below in third cavity, radiating component, it includes at least 2 opposite radiating plate and the radiating column of connecting radiating plate, radiating plate and radiating column are the shell of intercommunication, first cavity, second cavity in radiating plate in second cavity, second shower nozzle in third cavity is communicated in proper order through third through pipe. The device can be adjusted according to actual working condition the flowing path and heat exchange process of water flexibly.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, and in particular to a steam waste heat recovery device. Background Technology

[0002] During power generation, the low-temperature, low-pressure exhaust steam discharged from the turbine contains a large amount of heat energy, which would be wasted if directly discharged. Many steam waste heat recovery devices exist, but their effectiveness is not very good. The heat exchange structure has limitations, making it difficult to improve waste heat recovery efficiency, resulting in a significant loss of low-grade waste heat.

[0003] For example, while it can perform simple waste heat recovery, its poor adaptability to fluctuations in steam parameters leads to unstable waste heat recovery efficiency. Or, while it can improve waste heat recovery efficiency, its complex structure and high cost make it unsuitable for large-scale applications.

[0004] It is necessary to improve existing waste heat recovery equipment to reduce thermal pollution while maintaining good adaptability and reliability. Utility Model Content

[0005] In view of the above situation and to overcome the shortcomings of the prior art, this utility model aims to provide a steam waste heat recovery device. Through a unique multi-chamber structure and heat dissipation component design, it effectively improves waste heat recovery efficiency, reduces flue gas temperature, and reduces thermal pollution, while also possessing good adaptability and reliability.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a steam waste heat recovery device, comprising:

[0008] The enclosure is divided into a first cavity, a second cavity, and a third cavity by a heat insulation board; the side walls of the first cavity, the second cavity, and the third cavity are all provided with a first through pipe;

[0009] A connecting component, comprising a plurality of second pipes connecting the first cavity, the second cavity, and the third cavity; the plurality of second pipes are connected in parallel; wherein, the end of the second pipe inside the third cavity is connected to a first nozzle;

[0010] The second nozzle is located below the first nozzle within the third cavity;

[0011] A heat dissipation assembly, comprising at least two opposing heat dissipation plates and a plurality of heat dissipation columns connecting the heat dissipation plates; the heat dissipation plates and the heat dissipation columns are hollow structures;

[0012] The heat dissipation plate in the first cavity is connected to the outside of the box through a third pipe, allowing steam to enter; the heat dissipation plate in the first cavity, the heat dissipation plate in the second cavity, and the second nozzle in the third cavity are connected in sequence through the third pipe.

[0013] Furthermore, the heat dissipation column of the heat dissipation component is a spring-shaped spiral pipe.

[0014] Furthermore, multiple heat-conducting fins are spaced apart on the outer side of the cylindrical shell of the heat dissipation column of the heat dissipation assembly.

[0015] Furthermore, the second conduit connected to the second cavity comprises at least two conduits.

[0016] Furthermore, the second pipe of the first cavity is connected in parallel with at least one second pipe of the second cavity to form a first connecting unit; at least one second pipe of the second cavity is connected in parallel with the second pipe of the third cavity to form a second connecting unit; the first connecting unit and the second connecting unit are connected by a pipe equipped with a valve.

[0017] Furthermore, the valve is an electromagnetic valve that can be controlled by an electrical signal.

[0018] Furthermore, the valve is provided on the first through pipe, and the first through pipes on the sidewalls of the first cavity and the second cavity are connected in parallel at one end outside the valve.

[0019] This utility model has at least the following advantages or beneficial effects:

[0020] The heat dissipation assembly includes at least two opposing heat dissipation plates and multiple heat dissipation columns connecting the heat dissipation plates, forming a connected shell. The heat dissipation columns are either spring-shaped spiral pipes or multiple heat-conducting fins spaced apart on the outer side of the cylindrical shell. This unique heat dissipation assembly design not only increases the heat dissipation area and improves heat dissipation efficiency, but also adapts to different operating conditions.

[0021] By incorporating multiple parallel second-connection pipes and appropriately configured connecting units and valves, this equipment can flexibly adjust the water flow path and heat exchange process according to actual operating conditions. For example, the second-connection pipes of the first and second cavities can be connected in parallel to form a first connecting unit, and the second-connection pipes of the second and third cavities can be connected in parallel to form a second connecting unit. Furthermore, the first and second connecting units are connected by pipes equipped with valves. This flexible connection method allows the equipment to better adapt to different water flow rates and temperature conditions, improving its adaptability and reliability. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the steam waste heat recovery equipment in Example 1;

[0024] Figure 2 This is a schematic diagram of the box structure;

[0025] Figure 3 This is a schematic diagram of the heat dissipation component in Example 1;

[0026] Figure 4 This is a schematic diagram of the steam waste heat recovery equipment in Example 2;

[0027] Figure 5 This is a schematic diagram of the heat dissipation component in Example 2;

[0028] Figure label:

[0029] 1-Box body; 10-Insulation board; 11-First cavity; 12-Second cavity; 13-Third cavity; 14-First connecting pipe;

[0030] 2-Connecting component; 21-Second conduit; 22-First nozzle; 23-First connecting unit; 24-Second connecting unit;

[0031] 3-Second nozzle;

[0032] 4-Heat dissipation assembly; 41-Heat dissipation plate; 42-Heat dissipation column; 43-Third conduit;

[0033] 6-Valve. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of this application. Unless otherwise specified, 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 application pertains.

[0036] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] In this utility model, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship of the various parts or elements of this utility model and do not specifically refer to any part or element in this utility model. They should not be construed as limiting this utility model.

[0038] In this utility model, terms such as "fixed", "connected", and "linked" should be interpreted broadly, indicating that it can be a fixed connection, an integral connection, or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. For relevant scientific researchers or technicians in this field, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and should not be construed as a limitation of this utility model.

[0039] The embodiments of this utility model will be described in detail below.

[0040] Example 1:

[0041] This utility model discloses a steam waste heat recovery device, the details of which are as follows:

[0042] Figure 1 A schematic diagram of the steam waste heat recovery equipment in this embodiment is provided. As can be seen from the diagram, it mainly includes the following five parts:

[0043] Box 1, with pipes connected to its side walls, which can supply water or steam.

[0044] The connecting component 2 includes multiple second pipes 21 extending outward from the inside of the tank 1, with the outer ends of the multiple second pipes 21 connected in parallel; the connecting component 2 is capable of regulating the water at different locations in the tank 1.

[0045] The second nozzle 3 is mainly used to spray and diffuse the steam into the input housing 1, thereby achieving complete utilization of the steam.

[0046] Heat dissipation component 4 is installed inside the housing 1. The heat dissipation component 4 is a hollow shell with good thermal conductivity that allows steam to circulate. Its main function is to allow the steam inside to exchange heat with the water outside.

[0047] Valve 6 can be a mechanical valve or an electromagnetic valve that can be controlled by an electrical signal. It is mainly used to control the opening and closing of the channel.

[0048] Specifically, Figure 2 A structural schematic diagram of the housing 1 and the connecting component 2 is provided. As shown in the diagram, the housing 1 is a shell with pipes connected to its side walls. Its interior is divided into three parts by a heat insulation plate 10, from bottom to top: a first cavity 11, a second cavity 12, and a third cavity 13. These three cavities are the main locations for heat exchange between steam and water in this embodiment. Furthermore, each of the first cavities 11, 12, and 13 of the housing 1 has a first connecting pipe 14 on its side wall. The ends of the first connecting pipes 14 connecting the first cavities 11 and 12 are connected in parallel to a water supply end for adding water to the first cavities 11 and 12; the end of the first connecting pipe 14 connecting the third cavity 13 is connected to a water supply end for draining water from the housing 1. Additionally, a valve 6 is provided at the end of the first connecting pipe 14 near the housing 1 to control the opening and closing of the channel, thus controlling the inflow and outflow of water into and out of the housing 1.

[0049] In addition, one, two, and one second passage pipe 21 are respectively provided in the first cavity 11, the second cavity 12, and the third cavity 13. The second passage pipe 21 provided in the second cavity 12 is also provided with a valve 6 for controlling the opening and closing of the passage; the second passage pipe 21 provided in the third cavity 13 is connected to a first nozzle 22 inside the third cavity 13.

[0050] The first connecting pipe 21 in the first cavity 11 and the second connecting pipe 21 in the second cavity 12, which are located close to the first cavity 11, are connected in parallel to form a first connecting unit 23; the second connecting pipe 21 in the second cavity 12, which is located close to the third cavity 13, and the second connecting pipe 21 in the third cavity 13 are connected in parallel to form a second connecting unit 24; a valve 6 is installed between the first connecting unit 23 and the second connecting unit 24 and then connected in series.

[0051] Figure 3A schematic diagram of the heat dissipation assembly 4 is provided. As shown in the diagram, the heat dissipation assembly 4 mainly includes two heat dissipation plates 41 facing each other and multiple heat dissipation columns 42 connected at both ends to the heat dissipation plates 41. These heat dissipation columns are spring-type and spiral-shaped. The heat dissipation assembly 4, including the heat dissipation plates 41 and the heat dissipation columns 42, is a hollow shell, allowing steam to circulate inside. This directly increases the contact area between the steam inside the heat dissipation assembly 4 and the water outside, thereby improving heat exchange efficiency.

[0052] In addition, in this embodiment, there are two heat dissipation components 4, which are respectively installed in the first cavity 11 and the second cavity 12 of the housing 1. The heat dissipation plate 41 on the heat dissipation component 4 in the first cavity 11 is connected to the steam supply device in the outside through the third channel 43; the heat dissipation plates 41 that are close to each other in the first cavity 11 and the second cavity 12 are connected by the third channel 43 passing through the corresponding heat insulation plate 10; the heat dissipation plate 41 of the heat dissipation component 4 in the second cavity 12 that is closer to the third cavity 13 is connected to the second nozzle 3 in the third cavity 13.

[0053] In general, steam enters the heat dissipation component 4 in the first cavity 11 and the second cavity 12 sequentially from the outside through the third pipe 43, and is finally ejected from the second nozzle; simultaneously, water enters the first cavity 11 and the second cavity 12 sequentially from the outside, and is finally ejected from the first nozzle. During this process, the steam transfers heat to the water, thus achieving steam cooling and depressurization while water heating, achieving the purpose of steam waste heat recovery.

[0054] Overall, this embodiment can meet two needs:

[0055] (1) The water demand is not large, but the water temperature is relatively high.

[0056] At this time, open valve 6 of the first connecting pipe 14 in the first cavity 11 and close valve 6 of the first connecting pipe 14 in the second cavity 12, so that water enters the first cavity 11 only from the outside. Close valve 6 between the first connecting unit 23 and the second connecting unit 24 and open valve 6 on the second connecting pipe 21 in the second cavity 12, so that water flows through the first cavity 11 first, then through the second cavity 12, and finally into the third cavity 13.

[0057] (2) Large water demand, low water temperature requirement

[0058] At this time, open the valve 6 of the first connecting pipe 14 provided in the first cavity 11 and the second cavity 12, allowing water to enter the first cavity 11 and the second cavity 12 simultaneously from the outside. Open the valve 6 between the first connecting unit 23 and the second connecting unit 24 and the valve 6 on the second connecting pipe 21 provided in the second cavity 12, allowing water to enter the third cavity simultaneously from the first cavity 11 and the second cavity 12.

[0059] It is worth mentioning that the valve 6 mentioned above can be a mechanical valve, which facilitates structural maintenance; or it can be a solenoid valve that can be controlled by an electrical signal, which facilitates industrial applications.

[0060] Example 2:

[0061] The only difference between this embodiment and Embodiment 1 is the heat dissipation column 42:

[0062] In this embodiment, the heat dissipation column 42 includes a cylindrical shell and copper heat sinks spaced apart along the axial direction of the shell. This directly increases the heat dissipation column 42's ability to transfer heat to the outside, thereby improving heat exchange efficiency.

[0063] Except for the structure of the heat dissipation column 42, which is different from that in Embodiment 1, the structure of all other components, the operation process, and the valve control method are the same in this embodiment. For details, please refer to the description in Embodiment 1.

[0064] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A steam waste heat recovery device, characterized in that, include: The box (1) is divided into a first cavity (11), a second cavity (12) and a third cavity (13) by a heat insulation plate (10); the side walls of the first cavity (11), the second cavity (12) and the third cavity (13) are all provided with a first through pipe (14). The connecting component (2) includes a plurality of second pipes (21) connecting the first cavity (11), the second cavity (12), and the third cavity (13); the plurality of second pipes (21) are connected in parallel; wherein, the end of the second pipe (21) inside the third cavity (13) is connected to a first nozzle (22); The second nozzle (3) is located below the first nozzle (22) inside the third cavity (13); The heat dissipation assembly (4) includes at least two opposing heat dissipation plates (41) and a plurality of heat dissipation columns (42) connecting the heat dissipation plates (41); the heat dissipation plates (41) and the heat dissipation columns (42) are hollow structures. The heat dissipation plate (41) in the first cavity (11) is connected to the outside of the box (1) through the third pipe (43) to allow steam to enter; the heat dissipation plate (41) in the first cavity (11), the heat dissipation plate (41) in the second cavity (12), and the second nozzle (3) in the third cavity (13) are connected in sequence through the third pipe (43).

2. The steam waste heat recovery equipment according to claim 1, characterized in that, The heat dissipation column (42) of the heat dissipation component (4) is a spring-shaped spiral pipe.

3. The steam waste heat recovery equipment according to claim 1, characterized in that, Multiple heat-conducting fins are spaced apart on the outer side of the cylindrical shell of the heat dissipation column (42) of the heat dissipation assembly (4).

4. The steam waste heat recovery equipment according to claim 2 or 3, characterized in that, The second cavity (12) is connected to at least two second conduits (21).

5. The steam waste heat recovery equipment according to claim 4, characterized in that, The second pipe (21) of the first cavity (11) and at least one second pipe (21) of the second cavity (12) are connected in parallel to form a first connecting unit (23); at least one second pipe (21) of the second cavity (12) and the second pipe (21) of the third cavity (13) are connected in parallel to form a second connecting unit (24); the first connecting unit (23) and the second connecting unit (24) are connected by a pipe equipped with a valve (6).

6. The steam waste heat recovery equipment according to claim 5, characterized in that, The valve (6) is an electromagnetic valve that can be controlled by an electrical signal.

7. The steam waste heat recovery equipment according to claim 5, characterized in that, The valve (6) is provided on the first through pipe (14), and the first through pipe (14) on the side wall of the first cavity (11) and the second cavity (12) is connected in parallel at one end outside the valve (6).

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