Thermal power generating unit waste heat recycling device

Abstract

The utility model discloses a thermal power generating unit waste heat recycling device, and relates to the technical field of thermal power generating unit waste heat utilization, the thermal power generating unit waste heat recycling device comprises a waste heat recycling box and a recycling assembly, the top of the waste heat recycling box is connected with a processing box, and the recycling assembly used for waste heat recycling is arranged in the waste heat recycling box. And the recycling assembly comprises a first water collecting pipe box, a second water collecting pipe box, a cleaning scraper, a connecting plate and a first hydraulic rod, the second water collecting pipe box is arranged on the side edge of the first water collecting pipe box, the cleaning scraper is arranged outside the first water collecting pipe box, and the connecting plate is connected to the side edge of the cleaning scraper. According to the waste heat recycling device for the thermal power generating unit, gas or liquid flows in the first water collecting pipe box and the second water collecting pipe box, waste heat in flue gas of the thermal power generating unit is replaced at the same time, waste heat is recycled, and the waste heat utilization effect is improved; a plurality of first hydraulic rods drive a connecting plate and a cleaning scraper to move on the outer surfaces of the first water pipe collecting box and the second water pipe collecting box, and the real-time cleaning effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat utilization of thermal power units, in particular to a waste heat recycling device for thermal power units. Background Art

[0002] Comprehensive utilization of waste heat from thermal power plants refers to the recycling and utilization of waste heat generated during the power generation process through appropriate technical means, aiming to achieve efficient energy resource utilization, energy conservation, emission reduction, and environmental protection. As one of my country's primary sources of electricity, the comprehensive utilization of waste heat from thermal power plants holds significant significance and enormous development potential. The heat generated by fuel combustion is converted into steam in the boiler, which then expands in the steam turbine to drive the generator for power generation. However, not all of the fuel's heat is converted into electricity; some is emitted into the atmosphere as flue gas.

[0003] For example, the utility model with application number CN202322701946.8 is a waste heat utilization device for a thermal power unit. This utility model solves the problem of inconvenience in manually removing and replacing air filter elements. By setting up a non-disassembly filtering structure, the filter cartridges above the openings of the air supply duct and the exhaust duct can be quickly replaced in a short time, which effectively reduces manual labor, improves work efficiency, and enhances practicality. However, when utilizing the waste heat of flue gas in the existing method, particles in the flue gas are easily adhered to the pipe and cause accumulation, causing the pipe to become thicker and affecting the reuse of waste heat.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a waste heat recycling device for a thermal power unit is provided. Utility Model Content

[0005] The purpose of the present invention is to provide a waste heat recycling device for a thermal power unit to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a waste heat recycling device for a thermal power unit, comprising a waste heat recovery box and a recovery component, the top of the waste heat recovery box is connected to a processing box, the recovery component for waste heat recovery is arranged inside the waste heat recovery box, and the recovery component comprises a water collection tube box 1, a water collection tube box 2, a cleaning scraper, a connecting plate and a hydraulic rod 1, the side of the water collection tube box 1 is provided with a water collection tube box 2, and the outside of the water collection tube box 1 is provided with a cleaning scraper, the side of the cleaning scraper is connected to a connecting plate, and the upper end of the connecting plate is provided with a hydraulic rod 1 through a plastic telescopic tube.

[0007] Furthermore, support columns are provided on both sides of the waste heat recovery box, and a flue gas inlet pipe is provided at the lower end of the waste heat recovery box.

[0008] Furthermore, a partition plate is provided inside the smoke inlet pipe, and a smoke inlet hole is provided in the middle of the partition plate.

[0009] Furthermore, a filter screen is provided inside the processing box, and filter cotton is provided on the upper end of the filter screen.

[0010] Furthermore, the filter screen and the filter cotton are distributed in parallel, and an auxiliary component for filtering particles in the smoke is provided at the lower end of the filter screen.

[0011] Furthermore, the auxiliary component includes a mounting frame and an auxiliary brush, and the upper end of the mounting frame is provided with an auxiliary brush.

[0012] Furthermore, the auxiliary component also includes a bellows sleeve and a second hydraulic rod. The bellows sleeves are provided on both sides of the mounting frame, and the second hydraulic rod is provided inside the bellows sleeves.

[0013] Furthermore, the auxiliary brushes are linearly distributed at equal distances about the horizontal line of the installation frame, and two groups of the bellows sleeves and the hydraulic rods are symmetrically arranged about the central axis of the installation frame.

[0014] The utility model provides a waste heat recycling device for a thermal power plant, which has the following beneficial effects:

[0015] 1. The utility model simultaneously replaces the waste heat in the flue gas of the thermal power unit by flowing gas or liquid inside the water collecting tube box 1 and the water collecting tube box 2, thereby recovering and reusing the waste heat and improving the effect of waste heat utilization. Multiple hydraulic rods drive the connecting plate and the cleaning scraper to move on the outer surfaces of the water collecting tube box 1 and the water collecting tube box 2, thereby playing a real-time cleaning role for particles in the flue gas adhering to the surfaces of the water collecting tube box 1 and the water collecting tube box 2, thereby avoiding accumulation and thickening that leads to poor heat exchange effect of the water collecting tube box 1 and the water collecting tube box 2 and affects the reuse of waste heat.

[0016] 2. The utility model allows the flue gas to enter the waste heat recovery box more evenly through the partition plate. The partition plate can also prevent all the particles scraped off by cleaning from falling back into the flue gas inlet pipe. The filter screen and filter cotton filter the flue gas after waste heat recovery. The mounting frame is used for the installation of the auxiliary brush. The hydraulic rod drives the mounting frame to move left and right. At this time, the auxiliary brush cleans the particles filtered on the surface of the filter screen. The bellows sleeve protects the hydraulic rod and increases the service life of the hydraulic rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a waste heat recycling device for a thermal power unit according to the present utility model;

[0018] Figure 2 This is a schematic diagram of the recovery component structure of a waste heat recycling device for a thermal power unit according to the utility model;

[0019] Figure 3 The utility model is a schematic diagram of the auxiliary component structure of a waste heat recycling device for a thermal power unit.

[0020] In the figure: 1. Waste heat recovery box; 2. Support column; 3. Processing box; 4. Recovery component; 401. Water collection box 1; 402. Water collection box 2; 403. Cleaning scraper; 404. Connecting plate; 405. Hydraulic rod 1; 5. Flue gas inlet pipe; 6. Partition plate; 7. Flue gas inlet hole; 8. Filter screen; 9. Filter cotton; 10. Auxiliary component; 1001. Mounting frame; 1002. Auxiliary brush; 1003. Bellows sleeve; 1004. Hydraulic rod 2. DETAILED DESCRIPTION

[0021] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] like Figure 1 and Figure 2 As shown, a waste heat recycling device for a thermal power unit includes a waste heat recovery box 1 and a recovery component 4. The top of the waste heat recovery box 1 is connected to a processing box 3. The recovery component 4 for recovering waste heat is arranged inside the waste heat recovery box 1, and the recovery component 4 includes a water collecting tube box 1 401, a water collecting tube box 2 402, a cleaning scraper 403, a connecting plate 404 and a hydraulic rod 1 405. A water collecting tube box 2 402 is arranged on the side of the water collecting tube box 1 401. Gas or liquid flows inside the water collecting tube box 1 401 and the water collecting tube box 2 402 respectively to simultaneously replace the waste heat in the flue gas of the thermal power unit, recover and reuse the waste heat, and increase the effect of waste heat utilization. A cleaning scraper 403 is arranged on the outside of the water collecting tube box 1 401. The side of the cleaning scraper 403 is connected to the connecting plate 404, and the upper end of the connecting plate 404 is extended by a plastic The shrink tube is installed with a hydraulic rod 405, and multiple hydraulic rods 405 drive the connecting plate 404 and the cleaning scraper 403 to move on the outer surface of the water collecting box 1 401 and the water collecting box 2 402, so as to clean the particles in the flue gas adhering to the surface of the water collecting box 1 401 and the water collecting box 2 402 in real time, so as to avoid accumulation and thickening resulting in poor heat exchange effect of the water collecting box 1 401 and the water collecting box 2 402, which affects the reuse of waste heat. Support columns 2 are provided on both sides of the waste heat recovery box 1, and a flue gas inlet pipe 5 is provided at the lower end of the waste heat recovery box 1. A partition plate 6 is provided inside the flue gas inlet pipe 5. The partition plate 6 allows the flue gas to enter the waste heat recovery box 1 more evenly. The partition plate 6 can also prevent all the particles scraped off by the cleaning scraper 403 from falling back into the flue gas inlet pipe 5, and a flue gas inlet hole 7 is provided in the middle of the partition plate 6.

[0023] like Figure 3As shown, the interior of the processing box 3 is provided with a filter screen 8, and the filter screen 8 and the filter cotton 9 play a role in filtering the flue gas after the waste heat is recovered, and the filter cotton 9 is provided at the upper end of the filter screen 8, and the filter screen 8 and the filter cotton 9 are distributed in parallel, and the lower end of the filter screen 8 is provided with an auxiliary component 10 for filtering particles in the flue gas, and the auxiliary component 10 includes a mounting frame 1001 and an auxiliary brush 1002, and the upper end of the mounting frame 1001 is provided with an auxiliary brush 1002, and the mounting frame 1001 is used to install the auxiliary brush 1002, and the hydraulic rod 1004 drives the mounting frame 1001 to move left and right. At this time, the auxiliary brush 10 02 has the function of brushing and cleaning the particles filtered on the surface of the filter screen 8. The auxiliary component 10 also includes a bellows sleeve 1003 and a hydraulic rod 1004. The bellows sleeves 1003 are arranged on both sides of the mounting frame 1001, and the hydraulic rod 1004 is arranged inside the bellows sleeve 1003. The auxiliary brushes 1002 are equidistantly linearly distributed about the horizontal line of the mounting frame 1001, and the bellows sleeve 1003 and the hydraulic rod 1004 are symmetrically arranged in two groups about the central axis of the mounting frame 1001. The bellows sleeve 1003 provides external protection for the hydraulic rod 1004, thereby increasing the service life of the hydraulic rod 1004.

[0024] In summary, the waste heat recovery device of the thermal power unit is first based on Figure 1-Figure 3 The structure shown in the figure connects the flue gas pipe discharged from the thermal power unit during combustion to the flue gas inlet pipe 5, so that the high-temperature flue gas enters the waste heat recovery box 1. The partition plate 6 allows the flue gas to enter the waste heat recovery box 1 more evenly. At this time, gas or liquid can flow inside the water collection box 1 401 and the water collection box 2 402 respectively to simultaneously replace the waste heat in the flue gas of the thermal power unit, recover and reuse the waste heat, and increase the effect of waste heat utilization. When the waste heat is reused, multiple hydraulic rods 1 405 are controlled to simultaneously extend and retract to drive the connecting plate 404 and the cleaning scraper 403 to move up and down on the outer surface of the water collection box 1 401 and the water collection box 2 402, so as to play a real-time role in the removal of particles in the flue gas adhering to the surface of the water collection box 1 401 and the water collection box 2 402. The cleaning function prevents accumulation and thickening, which leads to poor heat exchange effect of water collection box 1 401 and water collection box 2 402 and affects the reuse of waste heat. The scraped particles fall to the outside of the partition plate 6 to prevent all the particles scraped by the cleaning scraper 403 from falling back into the flue gas inlet pipe 5. After the waste heat is utilized, the flue gas enters the processing box 3 again. The filter screen 8 and the filter cotton 9 filter the flue gas after waste heat recovery. After filtering for a period of time, the hydraulic rod 2 1004 drives the mounting frame 1001 to move left and right, so that the auxiliary brush 1002 can brush and clean the particles filtered on the surface of the filter screen 8. At this time, the bellows sleeve 1003 plays an external protection role for the hydraulic rod 2 1004, thereby increasing the service life of the hydraulic rod 2 1004.

[0025] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A waste heat recycling device for a thermal power unit, comprising a waste heat recovery box (1) and a recovery component (4), characterized in that: The top of the waste heat recovery box (1) is connected to a processing box (3), and the recovery component (4) for waste heat recovery is arranged inside the waste heat recovery box (1), and the recovery component (4) includes a water collection tube box (1) (401), a water collection tube box (2) (402), a cleaning scraper (403), a connecting plate (404) and a hydraulic rod (405). The side of the water collection tube box (401) is provided with the water collection tube box (2) (402), and the outside of the water collection tube box (401) is provided with a cleaning scraper (403), the side of the cleaning scraper (403) is connected to the connecting plate (404), and the upper end of the connecting plate (404) is installed with the hydraulic rod (405) through a plastic telescopic tube.

2. A waste heat recycling device for a thermal power plant according to claim 1, characterized in that: Support columns (2) are provided on both sides of the waste heat recovery box (1), and a flue gas inlet pipe (5) is provided at the lower end of the waste heat recovery box (1).

3. A waste heat recycling device for a thermal power plant according to claim 2, characterized in that: A partition plate (6) is provided inside the smoke inlet pipe (5), and a smoke inlet hole (7) is provided in the middle of the partition plate (6).

4. The waste heat recycling device of a thermal power unit according to claim 1, characterized in that: A filter screen (8) is provided inside the processing box (3), and filter cotton (9) is provided at the upper end of the filter screen (8).

5. The waste heat recycling device of a thermal power unit according to claim 4, characterized in that: The filter screen (8) and the filter cotton (9) are arranged in parallel, and an auxiliary component (10) for filtering particles in the smoke is provided at the lower end of the filter screen (8).

6. The waste heat recycling device of a thermal power unit according to claim 5, characterized in that: The auxiliary component (10) comprises a mounting frame (1001) and an auxiliary brush (1002), and the upper end of the mounting frame (1001) is provided with the auxiliary brush (1002).

7. The waste heat recycling device of a thermal power unit according to claim 6, characterized in that: The auxiliary component (10) further comprises a bellows sleeve (1003) and a second hydraulic rod (1004). The bellows sleeves (1003) are provided on both sides of the mounting frame (1001), and the second hydraulic rod (1004) is provided inside the bellows sleeve (1003).

8. The waste heat recycling device of a thermal power unit according to claim 7, characterized in that: The auxiliary brushes (1002) are linearly distributed at equal distances about the horizontal line of the mounting frame (1001), and two groups of the bellows sleeve (1003) and the second hydraulic rod (1004) are symmetrically arranged about the central axis of the mounting frame (1001).

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