Novel coal-fired boiler waste heat recycling device

Abstract

The utility model provides a novel coal-fired boiler waste heat recycling device which relates to the technical field of boilers and comprises a boiler body and an absorption mechanism, the absorption mechanism is installed on the outer side of the boiler body, heat dissipated by a shell of the boiler body is recovered through the absorption mechanism, and waste heat is reduced. Heat overflow of a shell of the boiler body is reduced through a heat insulation plate, heat is concentrated to a heat conduction piece to be transmitted, the heat is transmitted into a heat conduction frame through the heat conduction piece, an upper annular heat preservation pipe guides water into multiple sets of flow guide pipes, the water absorbs the heat collected by the heat conduction frame through the flow guide pipes, and hot water of the multiple sets of flow guide pipes is concentrated to a lower annular heat preservation pipe. A heat insulation sheet and a heat insulation protection shell provide a heat insulation function for an internal heat conduction element, heat overflow is reduced, a pump machine provides power for unheated water in a heat insulation water tank to be guided into a power heat insulation pipe, and the power heat insulation pipe is connected with an upper annular heat insulation pipe to guide the water into the power heat insulation pipe. And the heated water liquid is stored in the lower annular heat preservation pipe and is guided into the heat preservation water tank through the backflow heat preservation pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a novel waste heat recovery and utilization device for a coal-fired boiler. Background Art

[0002] Coal-fired boilers, as a traditional heat energy supply device, have been widely used in industrial production and civilian fields. However, coal-fired boilers generate a large amount of waste heat during operation. If not recycled and utilized, this not only wastes energy but also has a negative impact on the environment. By recycling waste heat, the consumption of coal and other energy sources can be reduced, thereby lowering the energy costs of enterprises.

[0003] After searching, the document of announcement number "CN219869235U" mentioned that "the utility model discloses a waste heat recovery and utilization structure of a coal-fired boiler, the utility model includes: a boiler, a side wall of which is provided with an air inlet for air intake; a water tank, which is arranged on one side of the boiler, an air pipe, one end of which passes through the upper wall of the boiler, and the other end of which passes through the upper wall of the water tank; a heating pipe, which is arranged in the water tank, and one end of which is connected to one end of the air pipe, and the other end of which passes through the side wall of the water tank; a filter screen, which is arranged on the inner upper wall of the boiler; a rotating rod, one end of which is rotatably connected to the upper end surface of the metal plate, and when rotating, The rod, metal plate, and bristles clean the filter, removing any dust clinging to it. This allows the filter to filter the flue gas and prevents dust and impurities from clogging it. During use, the outlet of the heating pipe penetrates the side wall of the water tank, allowing the flue gas within the heating pipe to circulate and exhaust the heat-depleted flue gas. This also facilitates the re-entry of the high-temperature flue gas from the boiler through the air pipe into the heating pipe to heat the water in the water tank. However, this device lacks a mechanism to recover heat dissipated from the boiler's outer casing, resulting in significant heat waste. Utility Model Content

[0004] The purpose of the present invention is to provide a novel device for recovering and utilizing waste heat from a coal-fired boiler, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a novel waste heat recovery and utilization device for a coal-fired boiler, comprising a boiler body and an absorption mechanism, wherein the absorption mechanism is installed on the outside of the boiler body;

[0006] The absorption mechanism includes a heat limiting component, a heat conducting component, a collection component and a heat insulating component. The heat limiting component is installed on the outside of the boiler body, the heat conducting component is installed on the outside of the heat limiting component, the collection components are installed at both ends of the heat conducting component, and the heat insulating components are installed at both ends of the heat limiting component.

[0007] Preferably, the heat limiting assembly includes a heat insulation plate and a heat conducting plate. The heat insulation plate is fixedly connected to the surface of the boiler body, and the heat conducting plate is fixedly connected to the inner side of the heat insulation plate.

[0008] Preferably, the heat conduction component includes a heat conduction frame and a flow guide pipe, the outer end of the heat conduction sheet is plugged with the heat conduction frame, and the interior of the heat conduction frame is fixedly connected with the flow guide pipe.

[0009] Preferably, the collecting assembly includes a lower annular insulation pipe and an upper annular insulation pipe, the lower annular insulation pipe is installed at the bottom end of the guide pipe, and the upper annular insulation pipe is installed at the top end of the guide pipe.

[0010] Preferably, the heat insulation assembly includes a heat insulation sheet and a heat insulation protective shell, the upper and lower ends of the heat insulation board are fixedly connected with the heat insulation sheet, and the inner side of the heat insulation sheet is fixedly connected with the heat insulation protective shell.

[0011] Preferably, a reflux assembly is installed on the outer side of the lower annular insulation pipe, and the reflux assembly includes a reflux insulation pipe and an insulation water tank. A reflux insulation pipe is installed on the outer side of the lower annular insulation pipe, and an insulation water tank is installed at the bottom end of the reflux insulation pipe.

[0012] Preferably, a power assembly is installed on the outside of the insulated water tank, and the power assembly includes a pump and a power insulation pipe. The pump is installed on one side of the insulated water tank, and the power insulation pipe is installed on the other side of the pump.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The heat emitted by the boiler body shell is recovered through the absorption mechanism to reduce heat waste. The heat insulation board reduces the heat dissipation of the boiler body shell and concentrates the heat on the heat conducting plate for transfer. The heat is transferred to the heat conducting frame through the heat conducting plate. The upper annular insulation pipe introduces water into the multiple groups of guide pipes. The water absorbs the heat collected by the heat conducting frame through the guide pipes. The hot water from the multiple groups of guide pipes is concentrated in the lower annular insulation pipe. The heat insulation plate and the heat insulation protective shell provide insulation function for the internal heat conducting components to reduce heat dissipation.

[0015] 2. The pump provides power to introduce the unheated water inside the insulation water tank into the power insulation pipe. The power insulation pipe is connected to the upper annular insulation pipe to introduce water. The heated water is collected in the lower annular insulation pipe and introduced into the insulation water tank through the return insulation pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the reflux component and the power component of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the collection component and the heat insulation component of the utility model;

[0019] Figure 4 This is a schematic structural diagram of the heat limiting component and the heat conducting component of the present utility model.

[0020] Numbers in the figure: 1. Boiler body; 2. Absorption mechanism; 21. Heat limiting component; 211. Heat insulation board; 212. Heat conducting plate; 22. Heat conducting component; 221. Heat conducting frame; 222. Flow guide pipe; 23. Collection component; 231. Lower annular insulation pipe; 232. Upper annular insulation pipe; 24. Heat insulation component; 241. Heat insulation plate; 242. Heat insulation protective shell; 3. Reflux component; 31. Reflux insulation pipe; 32. Insulated water tank; 4. Power component; 41. Pump; 42. Power insulation pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1

[0023] See also Figure 1-4 As shown, the utility model provides a technical solution: a new type of waste heat recovery and utilization device for a coal-fired boiler, comprising a boiler body 1 and an absorption mechanism 2, wherein the absorption mechanism 2 is installed on the outside of the boiler body 1;

[0024] The absorption mechanism 2 includes a heat limiting component 21, a heat conducting component 22, a collection component 23 and a heat insulating component 24. The heat limiting component 21 is installed on the outside of the boiler body 1, the heat conducting component 22 is installed on the outside of the heat limiting component 21, the collection components 23 are installed at both ends of the heat conducting component 22, and the heat insulating components 24 are installed at both ends of the heat limiting component 21.

[0025] Furthermore, the heat limiting component 21 includes a heat insulation plate 211 and a heat conducting plate 212. The surface of the boiler body 1 is fixedly connected with the heat insulation plate 211, and the inner side of the heat insulation plate 211 is fixedly connected with the heat conducting plate 212. The heat insulation plate 211 reduces the heat dissipation of the outer shell of the boiler body 1, so that the heat is concentrated on the heat conducting plate 212 for transfer.

[0026] Furthermore, the heat-conducting component 22 includes a heat-conducting frame 221 and a guide tube 222. The heat-conducting frame 221 is connected to the outer end of the heat-conducting sheet 212, and the guide tube 222 is fixedly connected to the inside of the heat-conducting frame 221. Heat is transferred to the heat-conducting frame 221 through the heat-conducting sheet 212, and the heat-conducting frame 221 transfers the heat through the guide tube 222 to heat the internal water.

[0027] Furthermore, the collection component 23 includes a lower annular insulation pipe 231 and an upper annular insulation pipe 232. The lower annular insulation pipe 231 is installed at the bottom end of the guide pipe 222, and the upper annular insulation pipe 232 is installed at the top end of the guide pipe 222. The upper annular insulation pipe 232 introduces water into multiple groups of guide pipes 222. The water absorbs the heat collected by the heat conduction frame 221 through the guide pipes 222, and the hot water from multiple groups of guide pipes 222 is concentrated in the lower annular insulation pipe 231.

[0028] Furthermore, the thermal insulation assembly 24 includes a thermal insulation sheet 241 and a thermal insulation protective shell 242. The upper and lower ends of the thermal insulation board 211 are fixedly connected with the thermal insulation sheet 241, and the inner side of the thermal insulation sheet 241 is fixedly connected with the thermal insulation protective shell 242. The thermal insulation sheet 241 and the thermal insulation protective shell 242 provide insulation function for the internal heat-conducting elements to reduce heat dissipation.

[0029] Example 2

[0030] See also Figure 2 As shown, comparative example 1, as another embodiment of the present invention, a reflux component 3 is installed on the outer side of the lower annular insulation pipe 231, and the reflux component 3 includes a reflux insulation pipe 31 and an insulation water tank 32. The reflux insulation pipe 31 is installed on the outer side of the lower annular insulation pipe 231, and the insulation water tank 32 is installed at the bottom end of the reflux insulation pipe 31. The heated water is collected in the lower annular insulation pipe 231 and introduced into the insulation water tank 32 through the reflux insulation pipe 31.

[0031] Furthermore, a power assembly 4 is installed on the outside of the insulated water tank 32. The power assembly 4 includes a pump 41 and a power insulation pipe 42. The pump 41 is installed on one side of the insulated water tank 32, and the power insulation pipe 42 is installed on the other side of the pump 41. The pump 41 provides power to introduce the unheated water inside the insulated water tank 32 into the power insulation pipe 42. The power insulation pipe 42 is connected to the upper annular insulation pipe 232 to introduce the water.

[0032] Working principle: First, a new type of coal-fired boiler waste heat recovery and utilization device is moved to the working position. When in use, in the first step, the heat insulation board 211 reduces the heat dissipation of the boiler body 1 shell, so that the heat is concentrated on the heat conducting plate 212 for transfer. In the second step, the pump 41 provides power to the unheated water in the insulation water tank 32 to be introduced into the power insulation pipe 42. The power insulation pipe 42 is connected to the upper annular insulation pipe 232 to introduce water. In the third step, the upper annular insulation pipe 232 is connected to the multiple groups of guide pipes 2 22 introduces water, and the water absorbs the heat collected by the heat-conducting frame 221 through the guide pipe 222. The hot water in the multiple groups of guide pipes 222 is concentrated in the lower annular insulation pipe 231. The insulation sheet 241 and the insulation protection shell 242 provide insulation function for the internal heat-conducting elements to reduce heat dissipation. In the fourth step, the heated water is stored in the lower annular insulation pipe 231 and introduced into the insulation water tank 32 through the reflux insulation pipe 31. In this way, the use process of a new type of coal-fired boiler waste heat recovery and utilization device is completed.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel coal-fired boiler waste heat recovery and utilization device, comprising a boiler body (1) and an absorption mechanism (2), characterized in that: An absorption mechanism (2) is installed on the outer side of the boiler body (1); The absorption mechanism (2) comprises a heat limiting component (21), a heat conducting component (22), a collecting component (23) and a heat insulating component (24); the heat limiting component (21) is installed on the outside of the boiler body (1); the heat conducting component (22) is installed on the outside of the heat limiting component (21); the collecting components (23) are installed at both ends of the heat conducting component (22); and the heat insulating components (24) are installed at both ends of the heat limiting component (21).

2. A novel coal-fired boiler waste heat recovery and utilization device according to claim 1, characterized in that: The heat limiting assembly (21) comprises a heat insulating plate (211) and a heat conducting plate (212); the surface of the boiler body (1) is fixedly connected to the heat insulating plate (211); and the inner side of the heat insulating plate (211) is fixedly connected to the heat conducting plate (212).

3. A novel coal-fired boiler waste heat recovery and utilization device according to claim 2, characterized in that: The heat conduction assembly (22) comprises a heat conduction frame (221) and a flow guide tube (222); the outer end of the heat conduction sheet (212) is plugged with the heat conduction frame (221); and the interior of the heat conduction frame (221) is fixedly connected with the flow guide tube (222).

4. A novel coal-fired boiler waste heat recovery and utilization device according to claim 3, characterized in that: The collecting assembly (23) comprises a lower annular insulation pipe (231) and an upper annular insulation pipe (232); the lower annular insulation pipe (231) is installed at the bottom end of the flow guide pipe (222); and the upper annular insulation pipe (232) is installed at the top end of the flow guide pipe (222).

5. The novel coal-fired boiler waste heat recovery and utilization device according to claim 2 is characterized in that: The heat insulation assembly (24) comprises a heat insulation sheet (241) and a heat insulation protective shell (242); the upper and lower ends of the heat insulation board (211) are fixedly connected to the heat insulation sheet (241); and the inner side of the heat insulation sheet (241) is fixedly connected to the heat insulation protective shell (242).

6. The novel coal-fired boiler waste heat recovery and utilization device according to claim 4 is characterized in that: A reflux assembly (3) is installed on the outer side of the lower annular insulation pipe (231), and the reflux assembly (3) includes a reflux insulation pipe (31) and an insulation water tank (32). The reflux insulation pipe (31) is installed on the outer side of the lower annular insulation pipe (231), and the insulation water tank (32) is installed at the bottom end of the reflux insulation pipe (31).

7. The novel coal-fired boiler waste heat recovery and utilization device according to claim 6 is characterized in that: A power assembly (4) is installed on the outside of the thermal insulation water tank (32), and the power assembly (4) includes a pump (41) and a power thermal insulation pipe (42). The pump (41) is installed on one side of the thermal insulation water tank (32), and the power thermal insulation pipe (42) is installed on the other side of the pump (41).

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